Plastic mold design and manufacturing? So, the following together to understand the plastic mold design and manufacturing steps!

 

1. accept mission statement

 

The plastic parts task book is generally submitted by the product designer and its contents are as follows:

 

1. In the review of qualified formal product drawings, indicate the use of plastic brand, transparency, etc.

 

2. Instructions or technical requirements for plastic products.

 

3. Yield.

 

4. Plastic samples.

2. plastic mold design and manufacture to collect, analyze and digest the original data

 

Plastic mold design and manufacture of plastic parts design, molding process, molding equipment, machining and special processing information, ready to use mold design.

 

1. Digest plastic product drawings, understand product uses, analyze plastic product processing, dimensional accuracy and other technical requirements. For example, what are the requirements for the appearance, shape, color transparency and service performance of plastic products, analyze the dimensions with higher dimensional accuracy of plastic parts, check whether the molding tolerance is lower than the tolerance of plastic parts, whether the geometric structure, slope and embedded parts of the molded products are reasonable, the tolerance of forming defects such as welding marks and shrinkage holes, and whether there is post-processing such as coating, electroplating, bonding, drilling, etc. Can form plastic parts that meet the requirements. In addition, also understand the plastic plasticizing and molding process parameters.

 

2. Digest process data and analyze whether the molding method, equipment model, material specification, mold structure type and other requirements proposed in the process task book are appropriate and feasible. The molding material meets the strength requirements of plastic products, and has good fluidity, uniformity, isotropy and thermal stability. According to the use of plastic products, molding materials should meet the requirements of dyeing, metal plating conditions, decorative properties, the required elasticity and plasticity, transparency or reverse reflection properties, adhesion or welding.

 

3. Determine the molding method-which one of the direct pressure method, casting method, or injection method is used.

 

4. Selection of molding equipment

 

Plastic mold design and manufacture according to the type of molding equipment to mold, need to be familiar with the performance of various molding equipment, specifications, characteristics. For example, regarding injection machines, the following needs to be understood in terms of specifications. Injection capacity, clamping pressure, injection pressure, mold installation size, ejection device and size, nozzle aperture and nozzle spherical radius, gate bushing retainer size, larger and smaller mold thickness, template stroke, etc. Specific reference to the relevant parameters, a preliminary estimate of the size of the mold, to determine whether the mold can be installed on the selected injection machine.

 

5. Plastic mold design and manufacturing specific structure program

 

1) The determination of the type of plastic mold design and manufacturing, for example, stamping die (open, semi-closed, closed), die casting mold, injection mold, etc.

 

2) determine the main structure of plastic mold design and manufacturing type

 

Choosing the ideal plastic mold design and manufacture is to determine the required molding equipment and the ideal number of cavities. The technical requirements for plastic products are to ensure the geometric shape, surface finish and dimensional accuracy of plastic products. Under reliable conditions, the work of the mold itself can meet the technical and production economic requirements of the plastic products. The economic requirements are to reduce the cost of plastic products, high production efficiency, and the mold can work continuously, long life, save labor.

 

Three. The factors that affect the design and manufacture of plastic mold structure and mold single system are many and complex.

 

1. Cavity layout, determine the number of cavities and their arrangement methods, according to the characteristics of the geometry of the parts, dimensional accuracy requirements, batch size, mold easy to manufacture, mold cost, etc.

 

2. Determine the parting surface, the position of the surface is conducive to mold processing, exhaust, demolding and molding operations, the surface quality of plastic parts, etc.

 

3. Determine the gating system (the main runner, secondary runner and gate shape, location, size) and exhaust system) exhaust method, exhaust slot location, size).

 

4. Select the ejection method (ejector rod, jacking tube, push plate, combined ejection), and determine the side pressure treatment method and core pulling method.

 

5. Determine the cooling, heating mode and the shape and position of the heating cooling tank, and the installation position of the heating element.

 

6. According to the mold material, strength calculation or experience data, determine the thickness and size of the mold parts, the shape of the structure and all the connection, positioning, guide position.

 

7. Determine the structural form of the main forming parts and structural parts.

 

8. Considering the strength of each part of the mold, calculate the working size of the molded part.

 

The above is the plastic mold design and manufacturing steps, if you need to know more, you can contact us at any time!