Automatic strapping machine features

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 systemAt 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 one1.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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What should be noticed to avoid board return in die cutting waste cleaning

In the carton die-cutting production process, die-cutting clear waste is always a big headache to the factory staff. Waste cleaning is both a waste of labor, and time, and will lead to the workshop filled with waste paper, seriously affecting the working environment. Once the carton feeding into the automatic packaging line, it is very easy to cause machine failure, or even breakdown.Therefore, in the production of die - cutting, it is recommended to pay attention to the following:1. In the production of rotary die-cutting products, closed sponge should be used, the sponge density is relatively large, rebound speed is fast, which is suitable for high-speed die-cutting. However, this type of sponge will be inflated to both sides when being squeezed, so keep a certain distance from the knife when placing the sponge, otherwise the blade will be squeezed.2. Make sure the waste paper is completely cut off or the sponge won't be able to push the paper out.3. After the sponge pushes out the waste product, it should have a speed difference to facilitate the waste cleaning.4. The sponge used in the waste paper should be a little higher, the higher the sponge the greater the push.5. Waste is cut very clean, yet still cannot spring out, that’s because the waste on both sides of the cardboard squeezed by sponge, so that pressure formed, blocked the waste inside the slot. Therefore, two sponges with different heights can be used to form unbalanced thrust, which helps to reduce the influence of side pressure.6. Never place the sponge against the blade unless it is in a all area.7. In the process of making dies, it is necessary to avoid slots being made T or L shapes on the cartons. Such shapes are difficult to be cleaned.8. A cutter can be installed in the long direction of the large piece of scrap to reduce the clamping of the paper block. Generally, the length of the scrap is controlled at 80m/ min, and the scrap piece is 50*75m/m.9. Eliminate short and sharp designs as much as possible because they are not conducive to waste removal.10. Minimum groove width of flat die, E flute: 4mm B flute: 5mm; C flute: 6mm, A flute: 7mm; double flute: 10mm.11. Minimum groove width of rotary die, E flute: 6mm B flute: 7mm; C flute: 8mm, A flute: 10mm; double flute: 12mm.12. Avoid tangential connections with acute angles.13. Try to avoid insufficient trimming, generally it is recommended to control in 10mm.14. The sponge in the slotting of the leading edge should leave the slotting end by 2-3mm, and the sponge in the slotting of the trailing edge should be close to the slotting knife.15. Scoring blade beside the slotting end should form a circular arc, the sponge should become a 45 degree angle, in order to facilitate the slotting knife to cut off the cardboard.

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Analysis and Solutions on Die–cutting Abnormal

The abnormal analysis on die-cutting size and its solutions are as follows:1.The cardboard length not confirmed is due to large paper feeding movement range, the stability is insufficient. Cardboard in between the rubber pad and die cutting, if the knife die strength in each place is not the same, it will lead to rubber pad rebound strength not the same, resulting in a certain degree of friction. In the case of high friction, cardboard delivery speed is relatively slow, and the knife has been cut down, so the cutting size will become shorter.Solution: Increase the speeding, because of the inertia of the two rollers, the cardboard will be feeding out quickly, so that the cardboard size is good.2.Size of front and rear cutter is inconsistent (length of rear die is short)The main reason is that after the cardboard is feeding out, the tail feeding speed slowed down, strength is not enough, the rubber pad below will drag the cardboard, forming friction, cardboard moving speed is slow, at this time the upper die blade is still moving fast, resulting in the back of the die cutting size shorter.Solution: Paste sponge on both sides of the knife die, that is the direction of the circumference. For the long cardboard, we can paste as much as possible, so that the cardboard can be quickly deliver out of through the sponge while the roller is rotary, so as to achieve synchronization.3.The old and new rubber padThe cutter and the rubber pad are driven by the fixed gear ratio, the old rubber pad is worn out, the circumference length becomes shorter, and the speed slows down. And the upper knife die rotation fast, this will also make the cardboard die cutting size shorter.Solution: Speed up the anvil. At present many domestic equipment have installed speed difference compensation device, which can quickly speed up.4.The transverse position of the die is not easy to cut off, because the transverse force of the die is too all. According to the principle of pressure, under the same force, the point will have less area than the line. So the longitudinal line of the die is easy to cut in, and the horizontal line is not easy to cut in.Solution: Generally to solve through the die, deepen the cutting depth. When making the die, the horizontal should be 0.2 mm higher than the vertical.5.Cardboard front edge uncertain displacement, mainly due to feeding instability.The paper feeding process is from the slotting unit to die cutting unit, if the slot is not processed, at the same time, the cardboard is very long, very large, the front and back of the paper feeding speed will not be synchronous, this will cause wrong size of the die cutting.Solution: You can stick a sponge or tape, to enhance the stability of paper feeding of slotting unit. So that the cardboard will be sent out evenly.

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How to prevent dust in die-cutting process

As we all know, die-cutting dust is a common problem in current carton production. This paper reveals the reasons and puts forward several feasible solutions.As flat die-cutting terms, dust and loose fibers refer to describe carton die-cutting edge damage. In practice, this term shows the production of loose particles and fragments, as well as the accumulation of filaments, which adhere to the cutting edge of the cardboard. It should be noted that these particles and fibers are mostly from the surface of the die-cut cardboard. This raises us questions from the following three aspects:◆How does the flat die cutting process being carried out?◆What causes the dust and loose fibers?◆How to prevent the generation of dust and loose fiber?How does the flat die cutting process being carried out?In order to accurately describe the use of flatted die - cutting process which the die – cutting tools are made of steel, this process will be defined as a mobile process, consisting of two gradual steps. The first step is called "blasting penetration" and the second step is called “blasting separation”.In the synchronous die - cutting process, the complete length of the die - cutting blade contacts the surface of die - cutting material. In die-cutting, the die-cutting blade will pressure on the cardboard material. Though this process is described as a cutting process, more specifically, this is a breaking process of a cardboard under the pressure. When the cutter goes into the cardboard where is more closed to anvil pad, the cardboard surface is squeezed, stretched and compressed, that fails to bear these pressures, finally get ruptured in the name of blasting penetration.The word "blasting" is an accurate way to describe the rupture of the cardboard surface. Because the blade will put strong extension and compression force on cardboard, giving rise to cardboard surface collapse along the die cutting edge.After the cardboard surface rupture, the sharpness of die - cutting blade is not the same as the previous step. Because the tool's double bevel angle will convert the pressure that in the vertical direction to the lateral force. When the cutter enters the cardboard, the bevel surface of the cutter pushes the cardboard vertically to both sides.Under the strong breaking pressure, the cardboard was completely torn before the cutting tool and anvil pad came into contact. The “blasting separation” process consists of surface rupture, cutter wedge and cardboard breaking.What causes the dust and loose fibers?Dust and loose fibers are caused by damaged die - cutting blades. The extra force causes the blade to hit the surface of the pad, widening the blade, in this way the cardboard extrusion and extension force on the surface of is greatly increased. The cardboard is further compressed, and the tension is slowly increased until the cardboard breaks, which is too hard, creating scraps and dust.As the pressure increases, further compression forces blunt the blade. Cardboard compression and extension surpass the normal range, its surface cracked into three pieces.From this process, we can draw the conclusion: dust and loose fiber come from the cardboard surface, the reason is the progressive damage of the die cutting blade. How to prevent the generation of dust and loose fiber?The way to avoid this problem is to keep the steel blade in good condition. There are several methods to choose from. In practice, one can be used, or several methods can be used simultaneously.Use soft or all thickness of die - cut pad.Calibrate the die - cuter to prevent excessive pressureCalibrate and balance the pressure on the die - cutting tool to ensure accurate “Z - axis control” of the bladeThe important tools in production planning are operated by “floating cutter”The double cardboard and area patching technology are precisely integrated into the joint patching process to make the die cutting uniform.Conclusion:The dust particles and loose fibers are directly related to the condition of the cutting blade. At the same time, some effective prevention and remedial measures can be used to avoid and reduce this kind of problem.

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Elements to purchasing automatic strapper

At present, the advanced automatic strapper in the market can not only realize the automatic strapping of cartons and cardboard, but also flexibly make plans according to the on-site layout characteristics of the carton factory. Online integration of the whole heap technology, automatic detection of package size, used for online or stand-alone purpose. Strapping with both pallets and without pallets. Special strapping track design allows customers to choose PP strip to reduce the cost of consumables, truly achieve efficiency and cost.Theconfiguration of FFG strapper should be considered in terms of strapping speed and strapping success rate.If the packaging speed is slow, it will affect the production efficiency of the printing press.When calculating the speed of automatic strapping machine, we should consider whether is three ply cardboard or five-ply cardboard, as well as packaging quantity and other factors.For example, the speed of a pack of 10 is 30 packets/min, which can only meet the speed of 300 sheets/min. Besides, the applicability of strapper for PP and PE strip should be considered.The differences between PP strapping machine and PE strapping machinePP strapping machine is divided into two types: single strip and double strip. Double strip strapping machineAt present the international such as Europe and the United States and the Middle East and other regions are mostly used PP double strip with FFG.In Europe and America, the speed of double strip strapping machine can reach 35 bales per minute at the soonest. Because of the price factor, single strip strapping machine is in the majority in Asia. The speed of single strip strapping machine is 6-8 bales per minute and double tracks 15 strapping/minThe imports of PP strip are mainly from Malaysia and Taiwan, domestic PP strip in recent years with the improvement of the level of production equipment, production capacity is gradually released, two specifications of single volume of 6000 meters or 7000 meters can be adapted to the majority of PP stripstrapping machine on the market.PE strapping machine: divided into automatic and semi-automatic.Before 2013, most of the semi-automatic PE strapping machines were available in the Chinese market.The earliest price of this type of strapping machine is about $3,500. Automatic PE strapping machine is mainly used in Japan and Taiwan in the early days. The fastest speed of this type of packer can reach 25-40 bales/min depending on the type and the height of the box.The price of a single machine is more than $110,000.In recent years, the automatic strapping machine produced in mainland China, relying on its stable quality and high cost performance, has enabled many packaging factories to afford the automatic baling machine, meanwhile, noticed the production efficiency and labor saving features of the automatic baling machine. PP strapping beltAccording to the parameter comparison in the table, there is still a certain gap between PE strip and PP strip in cost.PE tape costs less than PP tape, but there is no elongation of PP tape.The choice of this two has to be made by packaging enterprises according to their own products.But today, packaging enterprises in mainland China, due to the high cost of labor and difficult to recruit workers, the business philosophy of replacing people with equipment has become an irreversible trend.  PP strip, Taiwan/ MalaysiaNameSpecificationUnitInner diameter of paper coreNet weightPrice UnitLengthCostYellow light stripWidth:5.0±0.5mmThickness:0.5±0.05mmReel200mm6KG$3/KG3900m/R± 20m3.3min/mWhite light stripWidth:5.0±0.5mmThickness:0.5±0.05mmReel200mm6KG$3.21/KG3100m/R ±20m4.36min/m  

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