nylon zipper
Combination width 4.15±0.05 Single width 2.65±0.03 thickness 2.00±0.05mm
Head mouth height: 2.05-2.15 Head mouth width: 4.2-4.25
Closed tail: it does not need to be divided into high and low meters when setting the size, so sometimes it can be turned open; Sometimes the cloth edge filling density is too loose, it is easy to draw, affecting the appearance of the cloth, it is best to use the fabric pattern in the width range of the bottom stop, so that the bottom stop through the cloth is not easy to draw; The top end position must be guaranteed to be flush, the front lead is 2.2mm, the back lead is 1.8mm, and the front and back code leads are 4.0mm.
Open: The size of the selection of teeth is more difficult, because the tooth distance is relatively small (1.2mm), it is best to choose a fixed code installation, right inserted left high right low, need manual repair, super sound half imi pressure to the root, both sides with tibialis evenly distributed, and the surface line is constant, the length of the punching cloth foot is about 8mm, the speed of pulling the box latch should not be too fast, both sides of the force uniform and pull in place, the pressure organ slow must work, In this way, the mold is not easy to damage, the pressure is changed from high pressure to low pressure, the mold is slowly closed, and then the high pressure action pressure is changed from low pressure to high pressure, and the high pressure mode locking can be done. The difference between the two induction switches is about 20mm. Due to the thin thickness of 3 # nylon, the induction switch action difference is small, and the adjustment of the induction switch position is required to be higher. When the zipper is in neutral, the induction switch will light up, go to the higher part of the zipper tooth, the induction rod will act, the induction switch and the light will be off, the fishing needle will press down, hook the hole of the cloth and the tooth in place and flush down.
Factors that are easy to lead to 3 # nylon zipper defects: due to the reason of code installation, the surface line is easy to break when the size is fixed, and the ultrasonic half is not crushed, causing the pressure to open the tail is not in place.
Note: 3 # nylon open end needs to accompany the open end pull head, if the code is installed normally, the top stop can be injected.
5 # nylon zipper
Pull head mouth height: 2.9-3.0 mouth width: 6.5-6.6 Combination width: 6.45±0.05 Single width: 4.15±0.05 Thickness: 2.70±0.05
Common opening: Fixed size tooth selection should be adjusted at any time according to different code installation (due to changes in tooth distance), to ensure that the right insert left high right low, the left insert vice versa, the super sound half grain pressure to the root, the position of the tape should be flush, to ensure that the pin box is installed to the root, the pin punch through the pin, the box with the shin side to clamp, and the pin punch through the pin.
When repairing the folding mold, we must pay attention to the slope of the lower die, that is, the right insert left high right low, the left insert vice versa, and to carry out a strong test, qualified before production.
Factors prone to defects: due to the opening of the cloth foot is too short or too long, respectively, resulting in insufficient strength, the pin box is not equipped with the root, resulting in a crooked square, not good match, and the strength is not up to the standard value, the reason is that the punching is too partial to the outer side of the tibia, and the punching is too deep to cause the fracture of the tibia.
Injection end: fixed size, super sound the same as above, open the need to change the opening mold, (Note: when changing the mold, pay attention to the starting position, because the mold stroke is not the same, otherwise it is easy to damage the mold), the specific adjustment can be a piece of paper into the mold, hand wheel, paper just cut off is appropriate, punching foot length 9.5mm, press box pin please refer to 3 # nylon open end press.
5# Nylon double split tail
Fixed size ultra sound with 5 # nylon zipper, punching cloth foot length of about 13cm, to ensure that the box latch installed to the root, four pinholes are respectively in the center of penetration, the box must fall in place, otherwise easy to appear defective, separate parts and pull head to match, such as special pull head, it is recommended to try whether it is matched before mass production, punch the needle, Off-center or split parts break when the solution is overloading the face of the punch needle in different directions.
3 # Resin zipper
Drawhead mouth height 2.6-2.7MM, mouth width 4.75-4.85 Combination width 4.55± 0.05 Thickness 2.4±0.05
Closed tail: When pressing up and down, the temperature, injection delay, and pressure holding time should be adjusted appropriately. If the size of the closed tail zipper is about 15CM, a certain number of strips can be used when the strip is in a mold. Similarly, if there is a suitable size and quantity, a mold can also be used.
Press adjustment: The high pressure is not more than 100kg\/cm2, the shooting pressure is 40kg\/cm2, the holding pressure is 30kg\/cm2, the low pressure is 10kg\/cm2, the high pressure and the holding pressure cooling time should be above 0.1 seconds, and the specific adjustment should be made according to the actual product (zipper model).
Factors prone to defects: exposed shin (the reason is whether the upper and lower die positioning needle is broken, whether it is appropriate) latch off (whether the shooting pressure is appropriate, whether the pressure holding and cooling time are enough) the square cloth is seamed small (the pressed zipper is to be cooled before threading the pull head)
5 # Resin zipper
Pull head mouth height 3.2-3.3MM, mouth width 6.05-6.15 combination width 5.75± 0.05 thickness 2.95±0.05
Closed tail: Please refer to 3 # resin closed tail
Open end: the fixed size ensures that the lead is 5cm(14 teeth), the fine teeth are 5.1cm(21 teeth), the ultrasonic tape pattern is clear and uniform, the position is about 2mm away from the teeth, and the hole hook is firm and open in one word
Double open tail: the position of the ultrasonic tape is about 2.5mm away from the midtooth, the other is the same, if the resin zipper tape is pressed too deep, and then after pressing the tail, the root of the cloth is easy to break.
8 # resin zipper: pull head mouth height 4.15-4.25MM, mouth width 8-8.1 combination width 7.4±0.05 thickness 3.9±0.05
Open end: fixed size head 5.9-5.95(14 teeth), fine head 5.55-5.6cm(23 teeth)
10 # resin zipper
Pull head mouth height 4.15-4.25MM, mouth width 8.9-9 combination width 8.2±0.05 thickness 3.95±0.05
Open the end: the fixed size of the head 6.05-6.1(12 grains of teeth), the pressure should be adjusted higher on the basis of 5 #, and the time should be adjusted longer to ensure that the square pin is full and smooth.
3 # Metal zipper
Pull head mouth height 2.1-2.2MM, mouth width 4.55-4.65 combination width 4.45± 0.05 thickness 1.95±0.05
Close the tail: the damaged teeth must be removed after the fixed size, and the upper and lower teeth should be flat and the shin should be firmly wrapped
Open the end: the tape should be about 1.8mm away from the imitooth to ensure that the punching crochet can be hooked firmly. The foot length of the punching cloth should be about 8mm, ensure that the latch box is installed to the root, and the punching pin hole should be flushed to the tape and centered.
5 # Metal zipper
Drawhead mouth height 2.7-2.8MM, mouth width 6.0-6.05 combination width 5.90±0.05 thickness 2.6±0.05
Closed tail: Refer to 3 # metal zipper
Open the end: After measuring the size, remove the bad mi, stick the cloth about 1.8mm away from the mi tooth, ensure that the hole hook can be firmly hooked, the foot length of the punching cloth is about 8.5mm, ensure that the latch box is installed to the root, and the punching pin hole should be flushed to the tape and centered.