What is the process of mold design?

1, accept the task book:

Generally, there are the following three situations:

A: The customer gives the approved drawings of plastic parts and their technical requirements (2D electronic drawings, such as AUTOCAD, WORD, etc. ). At this time, it is necessary to establish a three-dimensional model (product design work content) and then draw a two-dimensional engineering drawing.

B: Approved drawings of plastic parts given by customers and their technical requirements (3D electronic drawings, such as PROE, UG, SOLIDWORKS, etc.). ). Just draw a two-dimensional engineering drawing. (for common situations)

C: Customers provide samples of plastic parts, hand boards and articles. At this time, it is required to process the number of plastic parts in surveying and mapping, then establish a three-dimensional model and make a two-dimensional engineering drawing.

2. Collect, analyze and digest raw data:

Answer: Analyze plastic parts.

Answer: Make clear the design requirements of plastic parts, and understand the materials, design requirements, application occasions, assembly and appearance requirements of plastic parts with complex shapes and high precision through drawings.

B: Analyze the possibility and economy of plastic molding process.

C: Ensure that the production batch (production cycle and production efficiency) of plastic parts is indicated in the customer's master order.

D: Calculate the volume and weight of plastic parts.

The above analysis is mainly to select injection molding equipment, improve the utilization rate of equipment, and determine the number of mold cavities and the size of mold feeding cavities.

B: analyzing the molding process of plastics;

Molding method, molding equipment, material type, mold type, etc.

3, grasp the actual production situation of manufacturers:

A: What is the technical level of the operators in the factory?

B: What is the manufacturer's existing equipment and technology?

C: technical specifications of molding equipment

D: What are the ordering and processing methods of mold materials and accessories commonly used by manufacturers (it is best to process them in our factory)?

4, determine the mold structure:

General ideal mold structure:

Answer: Technical requirements: Geometric shape, dimensional tolerance and surface roughness meet international standards. ?

B: Economic requirements for production: low cost, high productivity, long service life of the mould and easy processing and manufacturing.

C: product quality requirements: meet all requirements of customer drawings.

Data expansion:

1. Analyze the feasibility of the designed die products. Take the computer case as an example. First, use design software to analyze the product drawings of each component. On the other hand, we can be familiar with the importance of each component in the whole case to determine the key dimensions.

2. Analyze the mold structure of the product, arrange the working procedure of the product, determine the punching content of each working procedure, and use the design software to develop the product, generally starting from the subsequent project.

3, material preparation, according to the product development diagram, determine the template size in the drawing, including all fixed plates, discharging plates, convex and concave dies, inserts, etc. And pay attention to preparing materials directly in the product development drawing, which is of great benefit to drawing the mold drawing.

4. After the material preparation is completed, you can completely enter the drawing of the die drawing, and make another copy in the material preparation drawing to draw all the parts, such as adding screw holes, guide post holes, positioning holes and so on. In the stamping die, the forming gap between the upper and lower dies must not be forgotten, so the die drawing of a product is almost 80% completed after these works are completed.

In addition, in the process of drawing mold drawings, it should be noted that all processes, such as scribing and wire cutting, have complete layers, which is of great benefit to wire cutting and drawing management, such as color discrimination. Sizing is also a very important job, and it is also the most troublesome job, because it wastes too much time.

5. After the above drawings are completed, it is actually impossible to draw. It is necessary to proofread the mold drawings, assemble all the accessories, make different layers for each different template, analyze the mold assembly with the same benchmark, such as the guide post hole, and put the product development drawing of each process into the assembly drawing to ensure that the hole position of each template is consistent and the gap between the upper and lower molds at the bend is correct.

Source: Baidu Encyclopedia Mold Design