Classification by material: nylon zipper, resin zipper, metal zipper
1. Nylon zipper: invisible zipper, double-bone zipper, braided zipper, reverse zipper, waterproof zipper, etc.
2. Resin zipper: gold (silver) tooth zipper, transparent zipper, translucent zipper, animal luminous zipper, ray zipper, diamond zipper
3. Metal zipper: aluminum teeth zipper, copper teeth zipper (brass, cupronickel, bronze, red copper, etc.), black zipper
By species
1. Closed zipper
2. Open end zipper (left and right insertion)
3. Double closed tail zipper (X or O)
4. Double open end zipper (left and right insertion)
Classification by specification and operation process
The size of 3#, 4#, 5#, 6#, 7#, 8#, 9#------20# is proportional to the size of the zipper teeth
Technical indicators of zipper
3# hidden zipper combination width 4.15+0.03 single width 2.65+0.03 thickness 2.10+0.05mm
Electroplating slider: mouth width 4.4mm mouth height 1.9mm
Paint slider: mouth width 4.35mm mouth height 1.85mm
Ordinary straps are suitable for thick fabrics; lace straps are suitable for thin fabrics.
Ordinary top stop: Advantages: high output (adjustable speed);
Disadvantages: The top stop can sometimes not pull the root
U-shaped top stop: Advantages: sometimes the top stop cannot be pulled to the root, and it is suitable for clothing that requires pulling to the root;
Disadvantages: low output, 4000 pieces/8 hours.
Factors that easily lead to 3# invisible zipper defective products
The big knife is bent; the joint of the microphone teeth is slightly scratched when the size is fixed, which causes the lower stop welding to be in place, and even the upper stop is exposed, so the upper stop is easy to fall off; the lead has a length; the slider has no insurance after baking paint.
3# 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 Pull head mouth width: 4.2-4.25
Closing:
There is no need to distinguish between high and low microphones when sizing, so sometimes it can be turned around; sometimes the weft density of the selvage is too loose, which is prone to snagging, which affects the appearance. In this way, the bottom stop penetration tape is not easy to draw; the top stop position must be guaranteed to be flush, the front lead is 2.2mm, the rear lead is 1.8mm, and the front and rear end of the injection molding must be guaranteed to be 4.0mm.
end:
It is difficult to select the teeth of fixed size. Because the distance between the teeth is relatively small (1.2mm), it is best to use a fixed size device. The right insert is high and the left is high and the right is low. The microphone needs to be repaired manually. Evenly, and the line surface is continuous, the length of the perforated cloth feet is about 8mm. When pressing the square pin, the pulling speed should not be too fast. The force on both sides should be even and pulled in place. For low pressure, close the mold slowly, and then the high pressure action pressure is changed from low pressure to high pressure, and high pressure mold clamping is performed. The difference between the two induction switches is about 20mm. The thickness of 3# nylon is thinner, so the induction switch action difference is small. Adjusting the position of the sensor switch requires high requirements. The specific adjustment method is: when the zipper is in neutral position, the sensor switch light is on, and when the zipper reaches the higher part of the microphone, the sensor rod moves, the sensor switch light is off, the fishing needle is pressed down, and the hook is hooked to the cloth. The hole of the microphone is flushed down in place. Factors that easily lead to defective 3# nylon zippers:
Due to the size of the installation, the upper thread is easy to break when the size is fixed, and the ultrasonic half of the microphone is not crushed to death, causing the pressure to open and the tail to be pulled in place.
Note: 3# nylon opening is 9, it needs to accompany the opening tail puller, if the size is normal, the top stop can be injection molded
1.5# nylon zipper
Pull head mouth height: 2.9-3.0 mouth width, 6.5-6.6 combined width, 6.45+0.05 single width, 4.15+0.05 thickness, 2.70+0.05
Ordinary open end: the fixed-inch tooth selection should be adjusted at any time according to different sizes (due to the change of tooth spacing), ensure that the right insert is high, the left is high and the right is low, and vice versa, the ultrasonic half-grain microphone is pressed to the root, and the position of the adhesive tape should be flush , to ensure that the pinhole of the pin block is punched to the bottom, the length of the punching cloth is about 9.5mm, to ensure that the pin block is installed to the root, the pin punching needle will penetrate in the middle, the side of the square with the shin should be clamped firmly, and the punching needle will penetrate in the middle. .
When repairing the folding mold, you must pay attention to the slope of the lower mold, that is, the right insert is high, the left is high, and the right is low, and the left insert is opposite.
Factors prone to defective products:
Because the opening of the cloth foot is too long or too short, the strength is not enough, the bolt block cannot be installed at the root, the block head is crooked, and the matching is not good, and the strength cannot reach the standard value. The hole is too deep causing the shin to break.
Injection molding opening end: fixed size, supersonic is the same as above, the opening needs to be changed to open the mold, (Note: when changing the mold, pay attention to the starting position, because the mold stroke is different, otherwise it is easy to damage the mold), a piece of paper can be put into the mold for specific adjustment. In the middle, the hand wheel has a pulley, the paper is just cut off, the length of the punching foot is 9.5mm, and the pressing block pin, please refer to the 3# nylon open end press.
1.5 nylon double open end:
1 fixed-inch supersonic is the same as 5# nylon zipper, the length of the perforated cloth foot is about 13mm, to ensure that the square pin is installed to the root, and the four pinholes are respectively centered and penetrated. The sliders should be matched. In case of special sliders, it is recommended to test whether they are matched before mass production. When the punching needle is off-center or the separation part is broken, the solution is to backlog the surface of the punching needle in different directions.
2.3# Resin zipper Pull head 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 the upper and lower ends, the latitude, injection delay, and pressure holding time should be adjusted appropriately. If the size of the closed-end zipper is about 15cm, if there is a certain number, one row of microphones and two belts can be used. The same is true , if there is a suitable size and quantity, it can also be one piece.
Opening the end: When setting the village, make sure to take the lead FRONT face=“Times New Roman” larger than 4.5cm, (17 microphones), the pattern of the ultrasonic tape is clear, the left and right are uniform, and the position is about 1.5mm away from the microphone to ensure punching The crochet hook can be hooked firmly, and it can be cut through.
Press adjustment: high pressure should not exceed 100kg/cm2, injection pressure 40kg/cm2, holding pressure 30kg/cm2, low pressure below 10kg/cm2, high pressure, pressure holding cooling time should be more than 0.1 seconds, the specific should be based on the actual product (zipper model ) and then adjust.
Factors prone to defective products:
Exposed shin (the reason is whether the upper and lower mold positioning pins are broken and whether it is appropriate)
The pin falls off (whether the injection pressure is appropriate, and whether the pressure holding and cooling time are sufficient)
The square cloth seam is narrowed (the pressed zipper will be cooled before wearing the slider)
1.5# resin zipper
The mouth height of the slider is 3.2-3.3mm, the mouth width is 6.05-6.15, the combined width is 5.75+0.05, and the thickness is 2.95+0.05
Closing: Please refer to 3# Resin Closing
Open end: The fixed size ensures that the lead is 5cm (14 mics), the fine teeth are 5.1cm (21 mics), the pattern of the ultrasonic tape is clear and even left and right, and the position is 2mm away from the mics to ensure that the perforated crochet hook is firmly hooked And word for word.
Double open end: The position of the ultrasonic tape is about 2.5mm away from the microphone. Others are the same. If the resin zipper tape is pressed too deep, and then the end is pressed open, the root of the cloth tape is easy to break.
1.8# resin zipper: slider mouth height 4.15-4.25mm, mouth width 8-8.1 combined width 7.4+0.05 thickness 3.9+0.05
Opening end: fixed-inch row microphone lead 5.9-5.95 (14 microphone teeth) fine teeth lead 5.55-5.6 (23 microphone teeth)
2.10# Resin zipper:
Pull head mouth height 4.15-4.25 mm, mouth width 8.9-9 combined width 8.2+0.05 thickness 3.95+0.05
Opening end: Dingcun row microphone takes the lead 6.05-6.1 (12 microphone teeth), the pressure should be increased on the basis of 5#, and the time should be increased to ensure that the square latch is full and clean.
3.3# Metal zipper:
Pull head mouth height 2.1-2.2mm, mouth width 4.55-4.65 combined width 4.45-0.05 thickness 1.95+0.05
Closing the tail: After sizing, the damaged microphone teeth must be removed, the upper and lower ends are flush and the shin should be wrapped tightly.
Open the end: The sticker is about 1.8mm away from the microphone, to ensure that the punching crochet hook can be hooked firmly, the length of the punching cloth is about 8mm, to ensure that the bolt square is installed to the root, and the punching needle hole should be punched to the tape and centered.
4.5# metal zipper:
Pull head mouth height 2.7-2.8mm, mouth width 6.0-6.05 combined width 5.90+0.05 thickness 2.6+0.05
Closed tail: refer to 3# metal zipper
Open the end: After setting the size, remove the bad microphone, the sticker is about 1.8mm away from the microphone teeth, to ensure that the perforated crochet can be hooked firmly, the length of the perforated cloth is about 8.5mm, to ensure that the bolt is installed to the root, and the punching needle hole should be punched to the tape and centered.