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The basic process of injection mold development

by:Vowin Rapid Prototyping     2023-02-05
Injection mold development has a great impact on the current plastic processing market, mainly because of the current plastic production, many product structures are relatively uniform, so once new products appear, it will have a great impact on the market, and injection mold development represents the emergence of new products .

In the development process of injection mold, the whole process contains a lot of content. Development does not just come, it needs to go through very detailed market research, and then improve the results according to the corresponding design. The basic process of injection mold development mainly includes:
1. Product analysis and modification, determine the mold structure.

1. Product analysis: mold opening direction, parting line and parting surface, shape size, thickness, die angle, barb and corresponding core pulling method, glue inlet point and method, number of mold holes, etc.

2. Transfer engineering drawings: Use 3D software to produce drawings.

3. Shrinkage map: mirror the engineering drawing in the previous step, and enlarge the shrinkage ratio.

2. Product ranking: how to arrange in the mold

Factors to consider: mold length, width and orientation, number of product mold cavities, glue feeding position, and spacing.

3. Order mold kernels. According to product size, production batch, number of mold cavities, core-pulling mechanism, etc. .

4. Mold base order. According to the size of the mold core and the core-pulling mechanism (side), the way and position of the glue feeding, whether the front mold has a core-pulling (mold opening action, oil cylinder), product material, ejection method, etc.

5. Assemble the mold core into the mold base

Six. Mold core and mold base installation and positioning design

7. Design of parting line, pillow and inlay

Eight. If the customer's product has barbs, a core-pulling mechanism should be designed, such as row position or inclined top design

9. Design pouring system (direct gate, side gate, diving gate, horn gate, point gate, fan gate, lap gate, etc.)

10. If it is a fine nozzle mold, you need to design the switch and plug screw

Eleven. Exhaust system design (exhaust slot position and product overflow value)

12. Ejection system design (thimble, inclined ejector, cylinder, ejector block, push plate, air ejector, etc.)

Thirteen. Cooling system design (straight-through type, stepped type, clapboard type, spiral type, etc.)

Fourteen. Auxiliary parts opening (spring, garbage nail, support head, center support, lock template, buckle machine, side lock, balance weight, limit block, lifting mold hole, prying mold pit, etc.)
15. Check modification, view supplement and position adjustment

Sixteen. 2D to 3D parting or full 3D

17. Diagram of disassembled parts (3D+2D)

18. Review and modify the drawings.

Nineteen. After the drawing is qualified, print and file it

20. Drawings are sent to the mold manufacturing workshop processing workshop
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