How to produce Produce Auto-lock Slider(5parts)?
May 05,2023 | QLQ zipper solution supplier
1. Procedure Produce Zipper Slider Pressing Parts (needle , Hook, Middle Puller)
Step 1.1Pressing Mould
QLQ-NPM Automatic Pressing Machine
1)There have 10tons, 15tons, 25tons for choosing according to product size and output.
2) For pressing process, there have other devices. If you are interesting for this sujbect, welcome to contact us for get more Details.
QLQ-HSPM Automatic Pressing Machine (High Speed)
1)There have 10 tons, 15tons, 25tons for choosing according to product size and output.
2) If your product capacity is not so much, we advise you to choose standard speed pressing machine QLQ - NPM is enough.


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C Type Needle Mould(6pcs/mould, Wire Size 0.8*17)
1) The capacity for one mould is 6pcs, or 3pcs or 5pcs depend on pressing machine and product size.
2) There have C shape and Y shape needle for choosing according to customer's requirement.
3) Most customers choose to buy the needle/monkey directly from our company for saving production time and labour cost.
1) Brass /Iron Wire
2) C needle / monkey


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Y Type Needle Mould(5pcs/mould, Wire Size 0.8*24)
1) The capacity for one mould is 6pcs, or 3pcs or 5pcs depend on pressing machine and product size.
2) There have C shape and Y shape needle for choosing according to customer's requirement
3) Most customers choose to buy the needle/monkey directly from our company for saving production time and labour cost.
1) Brass /Iron Wire
2) Y needle / monkey


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Hook Mould(2pcs/mould, Wire Size 0.8*41)
1) The capacity for one mould is 1pcs or 2pcs depend on pressing machine and product size.
2) Normally customer buy finished hook directly from our company for saving production time and labour cost. It is also not easy to handle pressing moulds if customer doesn't have good technician.
1) Brass /Iron Wire
2) Hook


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Flat/Middle Puller Mould(2pcs/mould, Wire Size 0.8*31)
Normally customer buy finished Flat/ Middle Puller directly from our company for saving production time and labour cost. It is also not easy to handle pressing moulds if customer doesn't have good technician.
1) Brass /Iron Wire
2) Flat Puller
2. Procedure Produce Zipper Slider Body, Cap, Puller
Step 2.1 Zipper Slider Die Casting Machine
Automatic Hot Chamber Die-Casting Machine
1) There have 15tons, 25tons and 30tons for choosing. For auto-lock slider, we advise customer to buy 15tons in order to make the slider body with better quality.
2) We have standard configuration model and high configuration model for choosing. Please contact us for more details if you are interesting for this machine.
Auto-lock Zipper Slider Body Mould
1) If you don't know how many cavity per mould you can make, just let us known how much tons die casting machine you have and which size slider you want to make, then we will design for you.
2) For different logo, you just need to buy bottom stop mould for changing.
Auto-lock Zipper Slider Cap Mould
We can design same cap mould for your N51A, M51A, D51A auto-lock slider for saving cost and avoiding technician make mistake.
Auto-lock Zipper Slider Puller Mould
You can share one set mould frame/mother mould for several sets puller mould insert/ baby mould.
3. Procedure Separating and Polishing
- Step 3.1: Separating for Product and Material Frame
QLQ-SFSM Products and Frame Separating Machine
Inside with plastic glue layer for avoding nosisy running voice.
QLQ-BTPM Barrel Type Polishing Machine
1) This machine can polish the products shiny and without burr. But it takes at least 3-4 totally from roungh polishing to refine polishing
2)There have 50L, 100L, 150L, 200L, 250L, 300L for choosing. Normally, we advise customer to choose 150L.
1)Polishing stone
2) Polishing liquid
QLQ-VTPM Vibrating Type Polishing Machine
1) This machine can polishing the products without burr, but shiny is less than QLQ-BTPM. But it just take about 1-2hours totally from roungh polishing to refine polishing. And this machine is good for big size product.
2)There have 80L, 150L, 200L,250L, 300L and more big capacity for choosing.
3) There have A,B, AB model for choosing, welcome to contact us for more detailed inforamtion.
1)Polishing stone
2) Polishing liquid
QLQ-WTPM Whirlpool Type Polishing Machine (frequency conversion motor)
1) This machine can polishing the products without burr, but shiny is less than QLQ-BTPM. But it just take about 1-2hours totally from roungh polishing to refine polishing. If you make the normal quality slider, this machine is good for choosing.
2)There have 50L, 120L and more big capacity for choosing.
3) There have normal motor and frequency conversion motor for choosing.
1)Polishing stone
2) Polishing liquid
QLQ-CTPM Centrifugal Type Polishing Machine
1)This machine has higher speed and shinier polishing effect. But as the speed is too quickly, so it is not easy to destory slider body. This machine is good for polishing needle , needle, hook and other pressing small parts.
2) There have 40L, 80L, 120L and more big capacity for choosing.
3) There have belt running system and gear wheel running system for choosing.
1)Polishing stone
2) Polishing liquid
Step 5 Product & Polishing Stone Separate
- Product & Polishing Stone Separate
QLQ-PSSM Product & Polishing Stone Separating Machine
The silver should be made according to the polishing stone size and product size from customer.
Step 6 Oven Machine
- Oven Machine
QLQ-BSDM Hot-Wind Centrifugal Dryer
1) There have 35kg, 50kg, 70kg and more big capacity for choosing.
2) There have A, B two model for choosing. A inside and outside are stainless stell. B just inside is stainless stell.
4. Assembly Machine
- Step 7: Slider Body Durring
QLQ-006 Automatic Slider Body De-burr/Broaching Machine
For different size, if you don't have so much order, you can change the de-burr knife for suitable all size. For more details, please contact us.
Step 8 Cap+Spring Assembly
QLQ-003 Automatic Cap & Spring Assembly Machine
1) For belt spring(QLQ-003) and straigh spring(QLQ-032), cap+spring machine are different.
2) If you want machine runs very very smooth, you can consider to buy one set our "cap+spring selection machine" for make sure every cap with spring already on this machine.
Step 9 Auto-lock Slider Assembly
QLQ-025 Automatic & Semi-automatic Auto-lock Slider Assembly Machine
1) C type needle and Y type needle assembly machine are different.
2) Inlay model and channel model are also different.
We will help you to analyse which model is more suitable for your company.
3) If you want to keep needle can be assembled very smooth, you can consdier to buy one set " needle selection machine" for choosing good needle before assembly by this machine.
1) If you have many fancy puller for assembly, you can choose this model.
2) We have 2punchers and 4 punchers for choosing.
5. Painting or Plating
Step 10 Painting or Plating
Step 10.1: Barrel Painting
QLQ-SPM AutoMATIC Barrel Painting Machine
There have 25kg, 30kg, 50kg for choosing. Normally, customer choose to buy 30kg.
Step 10.2: Hang Painting
Hand Painting Machines and Process
For Hand painting machines and process, please check the details from our this website solution for painting and plating.
Step 10.3: Barrel Plating
Barrel Plating Machine and Process
For barrel plating machines and process, please check the details from our this website solution for painting and plating.
Step 10.4: Hang Plating
Hang Plating Machine and Process
For Hand plating machines and process, please check the details from our website solution for painting and plating.