Operation and process adjustment in automatic folder & gluer & stitcher

This paper will give you six aspects including operating standards guidelines, dirty adjustment, poor formation adjustment, poor adhesion adjustment, poor stitching adjustment, stacking and paper jam adjustment.1.Instructions on operating standards1).Pre-production inspectionMatters in terms of cleaning aspect●We need to wash and clean the paper feeding belt, delivery belt, folding beam belt. It is generally recommended to use alcohol cleanser, or dish washing liquid. It is important to keep these three belts clean.●Glue head cleaning. The glue head includes glue roll and filter screen. This adjustment is very simple, because the major component of the glue is water, generally we use warm water to soak, or pour the warm water into the glue pipe to circulate, rinse it clean. It is suggested that every shift should do the cleaning, otherwise the glue is accumulating, resulting in gluing problem.●Nail head cleaning. The nail head needs to be oiled, so WD-40 is used every day to clean it. Its main is lubrication and rust prevention.Materials InspectionMaterial inspection is mainly to check the scoring line. Because folder gluer mainly relies on the two scoring line to gluing the carton. We need to check whether the two scoring lines are tilted or poor effect. Before the inspection of semi-finished products, we can find out the cardboard with different scoring line to put them right according to the classification. Because there is a problem with the folder gluer, even if we make proper adjustments, there still will be a double scoring. Therefore, we separate the semi-finished products with poor scoring line for adjustment, so that the qualified rate will be higher.Glue InspectionMainly check the glue viscosity, and whether there is precipitation. The glue here is different from that of the cardboard production line, and its viscosity is very strong. It is suggested to measure it with cup No. 3. The viscosity of the glue should be controlled within 55 seconds. If there is precipitation, stir it well.Wire Plate InspectionWire plate inspection is mainly for the stitching machine.The most important is to check the whether the stitching wire inside the wire plate is flat, and the tightness of rewinding is appropriate. The stitching machine we use is different from the usual manual nailing, the wire plate needs to be put on the machine to do the test, just like the machine test on the base paper. Because the tightness and flatness of each supplier's wire plate are different, if it is not good, it will affect the quality of the stitching machine. Sometimes people feel that the stitching machine is not easy to operate, in fact, it may not be the problem of the machine, but the problem of the wire plate, so we must check the flatness and tightness of the wire plate, it is particularly important to find the supplier suitable for your machine.Barometer InspectionThe air pressure of each part is not the same, such as the air pressure of stacking unit should be 0.4MPa, that is, about 4kg , the pressure of paper feeding in the production should be 0.64MPa, and the gluing pressure in general is 0.34MPa.The pressure can neither be too big nor be too all. If too all, the amount of glue spray will be too all, resulting in insufficient glue, if too big, resulting in glue overflowing.In addition, the oil meter of stitching unit should also be noted, it is best in two thirds, and must not be lower than the position of the all tube, otherwise there is no oil to suck.2).Debugging MachineWe should debug the machine after the inspection, in the process of debugging the machine, it is generally recommended the first piece of paper running at low speed, controlled in 10 pieces/minute, after the debugging, operating the machine at above 60% of the mechanical maximum speed.There are two aspects in the process of adjustment to be noted, one is the angle of the belt, the other is to the position of the pushing plate. The angle of the belt should be a little larger in the front part, which is the flap of our gluing side. Only when this angle is turned up, it is able to ensure the flap of the gluing side flipped faster than the other side, resulting in a ooth gluing process. Of course, the angle change will cause a paper jam, so in the premise of no paper jam, the angle of the front part should be increased .When entering the stacking, the first label should be pressed in advance, that is, the gluing label should be pressed in advance, and then another label should be covered.The squaring plate is vertical, while the paper feeding belt below is in a state of climbing, so there should be an inclined angle, and the gap should be 1-3mm aller than the cardboard, it will squeeze in, so as to pat neatly.3).Labor Division and CooperationJust like the debugging of printing press, the debugging of gluing and stitching machine pays much attention to division of labor and cooperation. If we do not pay attention to reasonable arrangement, the debugging will take a quite long time, which will affect the production efficiency. The efficiency should be improved through division of labor and cooperation. The captain usually arranges the order, sets the production size and adjusts the product, the deputy usually adjusts the stacking unit and sets the subsequent stacking machine, and the paper feeding operator is responsible for the size adjustment of the paper feeding unit and the preparation of the subsequent paperboard. Only in this way can the production efficiency be brought into full play.4).Quality InspectionRegular inspection is required during the formal production. Here is a requirement for inspection for your reference.2.Process Adjustment1).Poor FormationThe main form of bad formation including fishtail and the size of the seaming.The first reason for poor formation is the poor scoring line of the semi-finished product. Scoring line is obviously inclined, so no matter how to fold, the size is difficult to adjust, in this case, you can adjust the correction wheel, from large to all. In addition, the secondary scoring device of the pre-folding unit can be used to correct the carton scoring. You can even add a spray humidifier in the pre-folding unit. With spray humidifier, it is better to scoring, and not easy to breaking. The second reason for bad formation is the problem of paper feeding, that is to say, the cardboard is oblique in paper feeding. If the baffle is not adjusted properly, the gap of the feed wheel will cause the feeding inclination, so the adjustment of the feed unit is mainly to adjust the size of the feed and the height of the front baffle. Then how to solve this problem through the adjustment of equipment? We can adjust the cardboard feeding gap driven by a separate frequency conversion motor, so that it will be automatically adjusted by following the speed of the main engine.The third reason of bad formation is belt slip. This is mainly due to the belt tension. Or the belt is dirty, oily. Generally speaking, loose belt will cause speed difference between two belts , resulting in one side fast and another side is slow at the same time, especially when gluing the box, it will be tight at one side while be loose on another side, giving rise to fishtail.The fourth reason for bad formation is poor belt adjustment. Belt angle should be adjusted with the guide rod angle, the front belt angle should not be adjusted too large, the cardboard should slowly turn, the effect is good. Therefore, the angle adjustment of inside guide rod and the outside guide rod should be cooperative. Some good solutions are that each belt can be used for individual acceleration and deceleration, or using servo motor, so that the whole system can be compensated by the acceleration and deceleration of the belt and the speed difference between before and after.The fifth reason is that the adjustment of the folding guide track is wrong, the folding guide track is tight on one side, is loose on the another side, the tight side is stuck, while the loose side continues to pulling, causing fishtail. Guide track gap is the main component to control the size of the carton seaming, the adjustment should be based on the cardboard scoring size. The sixth cause of bad formation is bad adjustment of folding guide rod. Guide rod is auxiliary forming, the back guide track is to lower, with appropriate adjustment of the belt angle.2).SmudgeThe first reason of udge is the poor wear resistance of ink, generally it can be improved by  increasing penetration or abrasion agent.The second reason of udge is large friction area between belt and guide rod, resulting in ink wiping. If the length of the paper belt adjusted too wide, the friction area will be large, and ink is easy to wipe down, the simplest way is to reduce its contact area with cardboard.The third reason of udge is dirty belt. The dirt of the belt will also transfer to the cardboard, how is the belt dirty? In fact, the belt and guide rod angle is too close, so the cardboard is pulling away, resulting ink falling . So we need to clean the belt, adjust the guide rod and belt angle.3). Poor AdhesionThe first reason of bad adhesion is glue overflow. The main reason is that the gap between the pasting wheels is too all, the glue concentration is too large, the downtime is too long, and the pasting volume of the pasting wheels is large etc.. So to reduce the amount of glue, adjust the paste wheel gap.The second reason is the paste head get stuck paper scrap.There are pieces of paper in the slot, which will often fall on the flap, that’s why the gluing is not good. We can add a brush and a windpipe to the tongue joint to sweep or blow down the scraps of paper.The third is false adhesion.The third reason is the glue initial adhesive force is not good, which needs to reduce the glue viscosity, enhance the glue penetration force.The fourth is glue-free. Check the gap between pasting barrel and pasting wheel.4).Poor StitchingThe first is to penetrating the surface of the box. Generally due to the too much nail head pressure, or the height of the tongue is too high. And there is no way to adjust the pressure gap, because if the gap too big, the stitching will be quite loose. At this time, check the nail head pressure, or use the prepress wheel to crush the fourth label and the tongue joint.In addition, the nail distance is not stable, generally the reason is that the nail head baffle is  loosen, which need to be checked, other problems like broken nails and missing nails, generally because the hardness of the flat wire is too brittle, that’s why a better toughness of the flat wire should be adopted.5).Stacking Paper StuckThe paper stuck is usually at the back of the paper delivery position, the front part is the paper feeding belt, the back part is the paper delivery belt, to adjust the height of both ends of the belt, so that the paper feeding belt is lower than the paper delivery belt, that is the cardboard in a climbing state, is easy to enter from the bottom. At the same time to reduce the width of the belt, avoid cardboard weight is too large, causing paper jam.

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Solutions and principles of automatic folder & gluer & stitcher

For a fully automatic gluing and stitching machine, it is very important for both the production line captain and managements to be familiar with the principles. Only by understanding the principles, can we further understand the machine's defects, and then targeted to solve the problems in the process, to avoid more quality problems in the process of operation.The automatic folder gluer and stitching machine is divided into five parts: paper feeding unit, gluing unit, folding unit, stitching unit and stacking unit. Here to explain that some of the automatic folder gluer without stitching unit, and some of the automatic stitching machine without gluing unit.Automatic gluing machine will not necessarily include stitching unit, because the technical content and production requirements will be higher. But if it is a fully automatic stitching machine, then generally it covers a gluing unit, because this  is relatively simple. 1.Analysis on paper feeding unitAt present, there are two kinds of paper feeding belts, one is a vacuum adsorption belt, another is flat belt. There is no doubt that the vacuum adsorption belt has better suction and paper feeding effect.  Table1: Difference between vacuum adsorption belt and flat belt   Key points            Advantages         DisadvantagesVacuum adsorption beltThrough the belt hole, increase the absorption of the belt, positioning accurate, it is suitable for the production of warped cardboardHigh price, complex mechani, frequent maintenance, frequent dust removal is necessary.Flat belt Driven by its own friction, the mechani is simple and the price is cheap   Positioning is not easy to adjust,  requirements for cardboard flatness is high. The second is the baffle adjustment. For the front baffle, its role is to feed the current cardboard, while blocking the next piece of cardboard. So the height of the baffle is about 1.5 times than the thickness of the cardboard. At the same time, there is a baffle on the left and right of the front baffle, the position of the two baffles should be uniform, the thickness and the gap should be consistent.For the rear baffle, it should be 2-3mm larger than the actual size of the cardboard, so that the cardboard is easy to fall. In addition, the height of the cardboard should not be too high, if so, the friction is too all, and the following cardboard is not easy to feeding out. It should be noted here that some folder gluer has paper guide rod instead of rear baffle, the advantage is that it is easy to adjust the warped cardboard. For example, if the cardboard is onward warping, then the guide rod can be down a little bit, and vice versa.For the side baffle, its size should be the same as the actual size of the cardboard, so there is no gap.2.Analysis on gluing unitThere are two modes of gluing of folder gluer, one is glue spray and the other is glue application.Glue application can be also divided into the top gluing and bottom gluing. Top gluing refers to gluing on the back of the cardboard; While bottom gluing refers to gluing on the top of the cardboard. This is determined by the model of the folder gluer. The glue spray system is controlled by the computer. Of course, glue spraying is better than glue coating, but the glue spraying system is more expensive, so currently glue coating is used more. If the economy allows, it is recommended to use glue spraying system.   Table2: Glue spraying& Glue coatingGluing method              Advantages          DisadvantagesGlue sprayingAccurate glue amount, not easy to overflow glue; Easy to adjust through the air pressure, generally supporting the bottom folding gluing. Glue head choked easily  Glue coating Simple mechani, general supporting top folding gluing.  The adjustment is not convenient, because the it will cause the difference in the quality of the glue due to the glue viscosity and other changes , such as glue overflowing, insufficient glue quantity Gluing roll gap adjustment is also very important. In principle, gluing roll gap should be 1mm lower than the thickness of cardboard, that is to say, cardboard just cover a millimeter, the amount of glue is proper. In the production of single flute, gluing roll height should be adjusted properly, generally as long as 0.5 mm is enough.The position of the gluing is also important. The gluing position should be kept at 7 mm from the slotting knife. If the gluing position is too close, it is easy to overflow the glue; If far away, the glue will not be overflowing, resulting in poor adhesion. 3.Analysis on folding unitThe principle of the mode of combining inclined wheel and belt is to bending inward through the belt so as to pulling the flap folding inward as well. At the same time, squeeze the scoring line with the inclined wheel, so that the formation effect of the scoring line will be better.In the folding unit, there are some adjustable wheels at the back of the equipment, which are the so called correction wheels. We can make secondary correction by correction wheels. However, there is no correction wheel in some equipment, and the inclined wheel will be used for early correction. There also has a mode namely belt plus row wheel. Of course, it is better to use the equipment with inclined wheel for early correction and the correction wheel for secondary correction.The upper folder gluer is widely used than lower folder gluer due to its cheaper cost. But why there is still someone choosing the lower folder gluer? Because the bottom folder gluer is a good match with the printing press. The top printing must be equipped with the bottom folder gluer, and we all know that the top printing machine is dominant in the market. So, if you are in favor of FFG, it is better tobottom folder gluer.  Table3: Top folder gluer & bottom folder gluerGluing method          Advantages        DisadvantagesTop gluing Match with bottom printing, simple mechani, easy to gluing.  Confetti tends to fall on the printing surface, affecting the appearance.  Bottom gluingGood match with the printing press, generally the top printing is dominant in the market, the bottom gluing needs to match with the top printing, it is convenient to clean the paper scraps, the paper scraps will not fall on the printing surface. Gluer structure is complex, it is best to use glue spraying. It is important to best describe the principles of folding unit, including the belt angle, correction wheel, folding guide rod position.In the front half of the folding unit, the gap of the folding guide rod should be consistent with the size of scoring line. There is a scoring line guide rod inside the guide rod, and the scoring line guide rod should be consistent with the position of the red line. If the scoring line is not good, you can properly adjust the gap of inner folding guide rod, or even directly adjust the size of the seam. The standard joint is 7 mm. The outer folding guide rod is used to adjust the angle of the belt, and the inner folding guide rod is used to adjust the size of the scoring line.In the latter half of the folding unit, there are two ways to adjust the correction wheel, one is to adjust the gap, the other is to make the correction wheel skew, skew angle can be adjusted to gradually increase the scoring line at a all angle.4.Analysis on stitching unitTwo details should be paid attention to, one is the wire disc should be loosened once the installation of flat wire finished, if the wire disc is not flexible enough, it is easy to pull the wire when stitching, resulting in a broken nail. The second is the nail head needs to be lubricated on time, if the lubrication is insufficient, it is also easy to appear broken nail.Analysis on stacking unitThe stacking unit of stitching machine is easy to deal with, because the size is determined as soon as the stitching is finished. However, the folder gluer needs to rely on some s of the stacking unit to strengthen the processing because the glue is not completely dry after gluing the box. Table4: Top stacking & bottom stacking  Folding method        Advantages        DisadvantagesTop stackingSimple structure and easy adjustment Easy to cause fishtail, no pressure on cardboard,so it is not easy to stack neatly.  Bottom stacking Due to the pressure of the upper carton, the adhesion effect is good, easy to be alignment.   The mechani is complex and synchronous adjustment is very important. Push plate is divided into big push plate and all push plate, big push plate is to squaring the cardboard with a whole push plate, all push plate is to squaring by several pieces.Bottom stacking generally have a pressure wheel or pressure plate. Of course, it is best to have pressure plate, so that the cardboard won’t be falling down during stacking. It is stable for paper to feeding out.In addition, the adjustment principles of stacking should also pay attention to the width of the stacking, which should be 1-3 mm less than the width of the cardboard, so that the push plate can be tightly squaring. At the same time, belt gap should be noted too, the width of the paper belt should be two-thirds of the width of the cardboard.System analysisThe two systems of the folder gluer have very different s. One is the tensioning device, adjusting the belt tension through the tensioning wheel, making the cardboard feeding oothly; One is the vacuum adsorption device, it refers to the adjustment of whole belt tension carried out by vacuum adsorption, which is very stable, and the effect is better than the ordinary tensioning device. So, we should pay attention to these two different folder gluer , in fact, the difference is quite big. Table5: Difference on vacuum folding track and none-vacuum folding track  Key points           Advantages     DisadvantagesVacuum folding trackTranission positioning is accurate, not easy to produce fishtail due to the error caused by the cardboard pullingExpensiveNone-vacuum folding trackStructure is simpleIt might cause fishtail due to tranission positioning accuracy error.

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How to avoid fishtail in gluing and stitching process?

Carton forming has to go through a series of processes of printing, slotting, stitching or gluing, and strapping. With the improvement of equipment automation, these processes have evolved into one process. Each and every process in carton forming process will have an impact on the cost. In other words, the more processes that go through, the higher the cost. The larger the batch, the more automated the equipment, and the lower the production costs. However, in the case of more orders and less quantity per order, the cost in using single machine will be low and vice versa.Even with the high quality cardboard in the production of corrugator, if having a rough management in printing, slotting, scoring, gluing and other aspects, cannot up to the technical quality requirements, it will not produce qualified corrugated boxes.The impact of bad carton formation on efficiency Combined with national standards and user application practices, the general requirements for carton forming are:1).Slotting,angle cutting and scoring: The slotting and angle cutting is in right place, cutting to the center of the transverse scoring line, the cutting edge is ooth, neat, no crack damage, no burr, crease not cracked.2).Stitching (gluing) : The two edges of cardboard should be aligned. The seam is not deflected and the distance between the two ends is the same. Nailing along the middle line of the tongue, arranged neatly, uniform. Must nail firmly, re-nailing, nailing more or nailing less are not allowed.Poor carton formation has a great impact on the production efficiency of the carton factory, mainly reflected in:1) .Low production rate of qualified productsDefective production needs for personnel selection, it is a waste of labor costs.2).High production loss.Fishtail is irreparable, resulting in product waste.3).Increase in production complaintsScoring line is poor, how to use intelligent equipment to control?The main reasons of bad scoring line are: scoring line is too light; Vibration of scoring wheel or pre-scoing wheel; Scoring wheel design is unreasonable;Scoring line too light may be because:personnel operation is not correct; Gap display data difference of printing press; Scoring wheel wear.Causes of vibration of scoring wheel or pre-scoring wheel:●The pre-scoring wheel is not round;●The bearing of scoring wheel is run-out.●Cardboard transfer vibration;Scoring wheel design is not reasonable, may be because:●Scoring roller diameter is too all;●The design of bump point and R angle of scoring roller is unreasonable.Then how to improve the design of the scoring roller?●Design the scoring width and depth of scoring roller according to the company's products.●The arc of the pre-scoring wheel should not be too wide, and the R angle should not be too low.●The bearing of scoring line should not jump too much in high speed rotation.●The diameter of the scoring roller is enlarged;●The gap between the scoring wheel and the pre-scoring wheel should be corrected regularly.In the carton production process, the printing operators has insufficient self-knowledge about scoring, the standard is as long as the line is not cracked. As responsibility has to be taken, so simply reduce the scoring pressure. The second is improper adjustment of the scoring line, only to increase the pressure of the scoring wheel, not to adjust the pressure of the pre - pressure wheel, scoring cracks is easy to happen. Therefore, the operators are more reluctant to increase the scoring pressure, so the carton scoring line is not good.Scoring operating procedure: ●Scoring must be deep, reasonably adjustment should be done according to different materials and flute shape. The pressure of pre-scoring wheel should be increased to those cardboard with low moisture and grams, while secondary pre-scoring mode also should be used.●The scoring gap should be controlled in 1.8mm-2mm to double wall, and 1.2mm-1.5mm to single wall.2.How to use intelligent equipment to control askew paper feeding?Skew paper feeding refers to the paper tilted in the process of paper feeding. If having a skew feeding in paper feeding unit, it will cause printing ribbon in the wrong order, printing position skew, slotting dislocation, scoring line askew and fishtail etc.When the cardboard through the feeding wheel appeared askew, then it is doomed to the scoring line is oblique. Because the paper feed is tilted, it is impossible to repair through the printing unit and slotting unit, the scoring line can only be oblique. So after printing, not only to check the printing, be sure to check whether the cardboard is oblique. The slotting can be checked to see if the cut is on a corrugated line, if not, then it is oblique.In the production process of the printing press, the paper feeding skew is often encountered. The reasons are as follows:●Paper feed rubber roller wear seriously.After using for a period of time, the feeding rubber roller will be seriously worn, which will cause changes in the elasticity and pressure of the feed rubber roller. There is not enough friction to feed the paper.Tips: Usually to do a regular maintenance, if paper feed roller wear can not be used, to timely check and replace it.●Unqualified rubber feed roller was used.Feeding rubber roller belong to consumable parts, most of the original factory not covering warranty. Many customers, in order to saving costs, rather choosing the rubber roller of the unknown all factory instead the original ones after using the printing press for a period of time, or find a all factory to process the old roll. Because feed rubber roller is in the state of high-speed operation, in order to ensure the stability and uniformity of feed pressure, the rubber roller material, design hardness of original manufacturers have strict requirements. Large factories require wear resistance, temperature resistance, pressure resistance and other properties, while all factories and and their maintenance personnel know little about this.Tips: When buying equipment, we must choose qualified manufacturer product.●Improper operation, equipment operators improperly adjust the gap between the feeding rubber roller and bottom feeding roller.If the gap adjustment is too large, the contact between the cardboard and the feed rubber roller is not close enough, and the friction is all, resulting in unstable paper feeding and inconsistent position of paper feeding before and after feeding. If the feed rubber roller gap adjustment is too all, it will cause paper feeding difficulties, which can not be tranitted to the front of the printing unit. Generally these situations appear by those inexperienced operators. After they replaced the feed rubber roller, they do not correct the gap data between the feeding bottom roller and the feed rubber roller, resulting in the discrepancy between the actual gap and the size displayed by the computer. Therefore, the size of the rubber roller gap can not be quickly set correctly.Tips: Do a good training to new staff, improve operational skills.●The scoring line is too deepCardboard pressure adjustment is too large, resulting in cardboard indentation is too deep.Indentation is too deep, so that the thickness at the indentation of the cardboard is thin. When feeding, the pressure by indentation transferring to the feeding rubber roller is not enough,  friction is reduced. This will cause the feed roller and cardboard slip, resulting in paper feeding position dislocated.Tips: Scoring line should not be too deep.●The feeding wheel of leading edge feed platform wear out or use poor quality tiresIf the feeding wheel of leading edge feed platform wear seriously, it will cause uneven feeding friction, resulting in the feed dislocated. Use inferior feeding wheel, because its material, hardness, size specification and original sun wheel have very big quality difference, it also affects the stability of the paper feeding .Tips:Timely check the feeding wheel of the leading paper feeding platform.●The air suction of paper feeding is not set properlyThe general equipment for paper feeding air suction can be adjusted. Now most of the use is frequency conversion motor, if the all and thin cardboard (the length is less than 650mm, the thickness is less than 3mm), then the air volume set to be aller. Air suction is too large, it will adsorb tightly, so that the cardboard against the screen caused pressure.Tips: For those all and thin cardboard, paper suction is to set up at a lower level.●The ventilation door of paper feeding suction is improperly setThe leading edge feed platform is provided with air door. In order to ensure uniform suction,the air door open of large and all cardboard should be different. Do not close the air door at both ends while producing large cardboard, otherwise resulting in paper feeding dislocation due to insufficient air suction.Tips: Do not close the air door at both sides when producing large cardboard.●Improper height adjustment of dust removal brushIn the production of thin cardboard, in order to ensure the effect of dust removal, the dust removal brush position is often lowered. When the production of cardboard, do not remember to adjust the brush position upward, resulting in collision between cardboard and brush, cardboard is meeting resistance, paper feeding is difficult, so the paper is dislocated.Tips: When producing the thick cardboard, remember to raise the brush to a higher position.3.How to intelligently control the instability of folding unit?The role of folding unit folder guler is to be able to gluing the carton and folding into formation through the gluing and folding mechani, and finally counting to stack. This process simplifies manual operation and improves production efficiency. Especially suitable for a large number of all and medium size carton production operations. Generally, the carton processed by the printing press is sending into the folding system, and then the gluing system which spraying glue  liquid on the cutting edge of the carton, the carton will be gradually folded under the guidance of paper guide rod and paper folding belt during the conveying process, and the slot width and squareness of the joint will be controlled.Then by counting conveyor system, the carton will be stacked out according to the set sheet number.●Guide rodThe paper guide rod shall be adjusted according to the product position to ensure the normal entry of the first label into the folding unit.Paper guide rod vibration on the impact of gluing box: paper guide rod vibration affects the stability of paper transfer on the belt, affecting the carton formation.●Auxiliary guide rod: When the carton is formed, following the auxiliary guide rod to fold, and adjust the difference between the first and the fourth label according to the carton size.●Folding guide bar: The folding guide bar and the belt clamped to transfer the carton, and the seam size is related to of the folding guide bar adjustment.Belt correction speed difference detection and belt cleaning: the belt speed difference affects the carton gluing, if two belts produce speed difference, it will produce a fishtail.Belt used for too long, its surface becomes ooth, resulting in unstable paper tranission, and fishtail.Regarding the correction wheel, the following should be realized: ●Each wheel has a different clearance, which can be adjusted appropriately according to the product.●The correction wheel is made of rubber products and has the strength and elasticity when scoring.●Scoring wheel with paper guide rod for scoring correction.●The thickness of the paper rod and the angle is cooperative by the tape.●Correction wheel with guide rod to correct the carton seam.●The correction wheel is tapered.4.How to control product stack dislocation intelligently?When stacking carton products, pay attention to size adjustment and air suction control.●The difference between top stacking and bottom stackingFolding methodAdvantagesDisadvantagesTop stackingSimple structure and easy adjustment Easy to cause fishtail, no pressure on cardboard,so it is not easy to stack neatly.  Bottom stacking Due to the pressure of the upper carton, the adhesion effect is good, easy to be alignment.   The mechani is complex and synchronous adjustment is very important.   ●The difference between big push plate and all push plateBig push plate is the a whole piece of push plate to pat the cardboard in alignment, all push board is divided into several pieces to pat the cardboard in alignment.Push plate stackingAdvantagesDisadvantagesBig push plateAdjustment is easy If the stress surface is not uniform, the effect is not ideal  Small push plateIt can adjust the stress surface,which is conducive to patting; Pinion can be matched to prevent paper jamAdjustment is in complex ●Pressure wheel and pressure plateThe bottom stack is usually assisted by a pressure wheel or a pressing plate. In this way, the cardboard will not slip when stacking, and the paper feeding will be stable .If there is no plate, the paper is not stable, especially after oil or paper surface is particularly ooth, it is easy to slip.●Stacking width and belt gap of stacker platformThe width of the stacking should be noted. Width should be 1-3mm less than the width of the cardboard, so that the cardboard can be patted in a tightly manner. At the same time, pay attention to the belt gap. That is, the belt gap of the stacker platform, the belt gap is two-thirds of the width of the cardboard, only in this way, the cardboard below can be transferred.     

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Why stitching coating falls off?

In the carton stitching, sometimes it will appear coating off. Once happened, it will not only cause the contamination damage, but suffer a series of needless troubles such as customer complaint, return money. This paper from the perspectives of material and stitching makes a brief analysis of the causes and solutions of the stitching coating falling off.There are two basic carton combination: one is the adhesive, to use glue for gluing. The other is to use nail wire stitching. Nail wire classification is also different, one is copper plating, one is lead plating. If the coating layer falls off, the nail wire of whatever material will be rust, which will lead to the contamination of the carton. For some electronic or food carton, it will affect the product inside and cleaning outside of the carton, which is not acceptable to the customer. So in what circumstances the nail wire would appear coating off?Material: poor adhesion between metal and coating.When the metal and coating adhesion is poor, it is easy to cause the coating to fall off. Check whether the peeling surface is a matrix, if the peeling surface is a matrix, it can be judged as the coating falling off due to poor adhesion. This falling off can only be strengthened before plating, so that the surface of the parts before plating can be oil-free, without oxide film, so that the matrix metal lattice is completely exposed.Nail head: the slot is too tight, which increases the friction of the nail wire.  In the process of using the nail wire, if the slot of the nail wire is too tight, then the friction of the nail wire will be increased in the production process, which will cause the nail wire coating to fall off, this kind of situation will also lead to broken nails frequently. So in the installation of nail wire, we must check the nail wire tightness, regular maintenance, and add lubricating oil.

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Two deadly details in gluing and stitching process

In the case of gluing and stitching operation, if often appears a lot of problems, such as fishtail, large seaming, cardboard crushed, scoring line broken,and fake gluing. Now we are going to focus on the discussion on the problems of gap adjustment of paper feeding wheel, scoring wheel in folding unit as well as scoring rod and belt adjustment.1.Gap adjustment of paper feeding wheel (Paper feeding unit)The paper feeding mold of automatic folder gluer and stitching machine is the same as the printing press. When adjusting the gap of the paper feeding wheel, we should avoid cardboard crush caused by too much pressure. When adjusting the feeding unit, it is necessary to pay attention to the height of the front baffle, which is not be too high or too low. If the front baffle is too high, it is easy to form two pieces of cardboard in and out at the same time, and also to cause fishtail. If the front baffle is too low, it will scratch the surface of the cardboard. In general, the feeding gap of the front baffle should be 1.5 times the thickness of the cardboard, and the paralleli of the front baffle should also be maintained regularly to ensure that the paralleli always ensures the feeding accuracy, 2.Folding unit scoring wheel, scoring rod, and belt adjustmentIf the adjustment is not good, it will lead to fishtail or the seaming size problem. If the scoring line after printing or die cutting out is not good, you can also adjust the belt angle and scoring line wheel to correct. The pressure of the scoring wheel of the folding unit is better to be high in front and low in the back, and the distance between the scoring rod and the angle of the belt can be adjusted appropriately according to different orders, which can effectively avoid the problem of different seaming sizes.When adjusting the folding bar, we should pay attention to the angle of the belt and the guide bar, the angle should not be too large in the process of paper feeding though the belt, to maintain a certain buffer angle. So that the carton forming process can conform to the angle of the belt. If the scoring line is bad, then it is necessary to use the correction wheel on the folding bar to correct the line, the angle of the correction wheel should be from light to heavy, not from heavy to light, that will cause bad forming.To keep automatic stitching and gluing equipment having a good forming effect, it is to consider the scoring line, the belt tension adjustment is also very important. The cleanliness of the belt will also affect the forming effect.Automatic folder gluer: The  is to process a piece of die-cutting cardboard into a folding and gluing carton to meet the needs of the final customer.Automatic folder gluer mainly consists of three parts: paper feeding unit, gluing unit and folding unit, stacking and output unit, and some machines are also equipped with automatic strapping unit. Automatic folder gluer with large batch production, production process in one go, is conducive to speed up production, improve product quality. 

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Functions of automatic strapping machine

Features of automatic strapping machineIn Europe, because the pallet standardization system is very mature, the pallet is equivalent to the currency which can free circulating and turnover in the whole industry.The use of pallets makes the time of whole delivery and logistics link greatly reduced.Pallet delivery can not only improve the efficiency of vehicles, shorten the delivery cycle, but can save labor and reduce labor intensity.In China, where does not have a sound pallet circulation system, whether it can also introduce the practice of foreign counterparts?The answer is yes, take the U.S market as an example, the carton logistics in the United States did not use the pallet circulation system as commonly as in Europe, but the Americans developed a set of logistics delivery process suitable for their own characteristics. The whole process not only reduces labor and labor intensity, but also achieves efficiency through the use of automatic logistics delivery and pallet-less packing machine, combined with modified forklifts and trucks.And the pallet does not participate in the delivery and receipt of goods, with the advantages of flexible and convenient operation, saving social resources allocation.Compare the efficiency of automatic strapping with that of manual strappingIn our country, with the continuous improvement of human cost and equipment automation, more and more carton enterprises have been equipped with automatic strapping machine.In the strapping process, if manual strapping is adopted, 1 person is equipped with a speed of 6 packages/min, and automatic strapping machine is adopted, with no manual labor and a speed of 30 packages/min.Automatic strapping machine with ARM control system At present, there are some automatic strapping machines on the market, some of which use ARM control system, which has a huge memory capacity and can control more than 200 control points within the strapping machine.In terms of strapping force, there are 10 levels, ranging from 0 to 9.The related s can be displayed on the touch screen: strapping mode, strip spacing adjustment, strip frequency link, standby mode, strip delivery speed, bundling specification, standby delay, objects stop delay, objects entry delay, objects exit delay, etc.As far as we know, the automatic strapping machine can be used for the ultra-thin packing strip with a width of 8mm and 12mm, and the 8mm strapping strip can be used for 1.6g instead of 2.2g.The 12mm strapping strip can be made from 3.2 grams to 2.2 grams.Comparison and analysis between the new automatic strapping machine and the ordinary one 1.Speed:In terms of speed of the ordinary strapping machine, it basically can continuously work 22-28 times every minute or so.High-speed strapping machine can be divided into specifications to compare the speed: for example, the continuous speed of 1250*500 specifications is 48-50 times per minute, and the speed can be adjusted, at least one third faster than the ordinary strapping machine.500*400 specification strapping machine, its continuous speed is more than 80 times per minute, at least double the ordinary strapping machine.It can save one labor compared with the ordinary strapping machine.2.Material:The weight/m of strappingstrip used in ordinary strapping machine is 3.2g-3.4g/m, the bonding fastness is 60%, the bearing capacity of 12mm strip: 900 Newton *0.6=540 Newton.The new strapping machine adopts ultra-thin strip, the weight is 2.2-2.4 grams per meter, the bonding fastness is 90%, the ultra-thin 12mm strip bearing capacity: 800 Newton *0.9=720 Newton, which can save about 45% of the production cost.3.Stability:The maintenance cost of the new type of strapper is half that of the ordinary strapping machine, the welding stability is over 90%, and the service life is more than twice that of the ordinary strapping machine.

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How to Effectively Improve the Accuracy of Box-Pasting Forming?

In the global carton production, box-pasting is an essential production link. However, how to achieve high precision requirement while maintaining high speed in stable production, is a very difficult problem to solve. Now most of the carton production enterprises are using automatic folding gluer in order to realizing efficient production. But what kind of folding gluer  can meet the requirement of high precision forming? First of all, we need to know what are the demands of high precision box-pasting. As shown in the figure, this is the best range of box-pasting that can be achieved in global corrugated board production:How to achieve high precision box-pasting?1. Carton-feeding GuaranteeFirst, the feeding part must be keeping stable, and most importantly, due to the printing face down, friction needs to be minimized so as to avoid damaging the printing face.2. Correction after Carton-feedingAfter the carton board going through the feeding process, aberration will appear. To avoid the impact on the after box-pasting accuracy, it is necessary to eliminate this error. At this time, it is necessary to correct the tranission position of cartons to ensure that all cartons are on the center line of equipment tranission, so as to fundamentally ensure the accuracy of box pasting.3.Scoring CorrectionThe most important factor that affects carton box folding forming is the carton board scoring. If the scoring is not good, then there will be a great effect on folding forming. Generally speaking, after the production of the watermark printing slotting machine, the scoring of the carton board is nonstandard, the error will be around plus or minus 2mm, even reach to 3-5mm, which will greatly affect the folding forming effect. Therefore, it is necessary to re-score to guarantee the effect, so as to ensure the scoring effect is required by the folding forming precision. 4.Control in non - rebound Folding Forming In the process of carton folding forming, it is necessary to effectively control the edge of scoring. However, the flexibility among the different types of cartons varied, such as board between flute A and flute E , flute AB and flute B, and flute AB flute to flute BE , cardboard flexibility are obvious different, and so are the paper gram, therefore its flexibility also changed. Then it is necessary to strictly control the side pressure in the carton box forming process to ensure that there will be no rebound dislocation during and after the forming process.5.Sufficient Bonding Time in StackingAfter carton folding finished, enough time should be given due to the time required for glue to dry completely. However this part is often overlooked in the production process. If box stacking are removed before glue is dry completely, meanwhile the carton happens to having a strong flexibility , then the glue will be stretched out. Usually this situation will occur on the top of the carton box.     --The Article is Original by Corrface . Please Indicate the Source if Reproduced.

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