Self-proofreading content of mold design

- Sep 05, 2018-

                 Self-proofreading content of mold design is as follows:

1. Relationship between mold and parts and drawings of plastic parts

Whether the material, hardness, dimension accuracy and structure of the mold and mold parts conform to the requirements of the drawings of the plastic parts.

2. Plastic parts

   Whether the flow of plastics material flow, shrinkage hole, weld mark, crack, demoulding slope and so on affect the performance of plastic parts, dimensional accuracy, surface quality and other requirements.There is no shortage of pattern design, whether the processing is simple, whether the shrinkage of the molding material is correct.

3. Molding equipment

The injection quantity, injection pressure and clamping force are enough, there is no problem with the installation of the mold, the south core of the plastic parts and demoulding.

4. Mold structure

(1) whether the position of parting surface and precision machining meet the requirements, whether there will be material overflow, and whether plastic parts can be guaranteed to stay at the mold side with ejection device after the mold is opened.

(2) whether the demoulding mode is correct, whether the size, position and quantity of the extension bar and push pipe are appropriate, whether the push plate will be stuck by the core, and whether it will scratch the formed parts.

(3) mold temperature adjustment.The power and quantity of the heater;Whether the position, size and quantity of the flow circuit of the cooling medium are appropriate.

(4) whether it is appropriate to treat the side concavity of plastic parts, such as whether the sliding block and push rod in the inclined guide pillar core-pulling mechanism interfere with each other.

(5) whether the location and size of pouring and exhaust system are appropriate.

5. Design drawing

(1) whether the placement part of each mold part is appropriate on the assembly drawing, whether it is clearly expressed and whether there is any omission

(2) on the part drawing parts number, name, quantity, parts made of integrity or outsourcing, it is standard or non standard parts, parts fit, molding plastic parts processing precision and high precision in size correction processing and allowance, mold parts of material, heat treatment, surface treatment, surface finish is marking, clear narrative.

(3) main parts, working dimensions and matching dimensions of the formed parts.Size Numbers should be correct and not be converted by the producer.

(4) check the position of view of all part drawings and general assembly drawings, whether the projection is correct, whether the drawing method meets the national standard of drawing, and whether there is any missing dimension.

6. Check processing performance

(whether the geometric structure, view drawing and size of all parts are conducive to processing)

7. Main working dimensions of the reset auxiliary tools

Professional proofreading is mainly carried out according to the designer's self-proofreading project.However, it should focus on the structure principle, process performance and operation safety.

   When drawing, the figure should be digested first, described according to the requirements of national standards, fill in all dimensions and technical requirements.After self-correction and sign.

   Hand in the drawing to the designer to check the signature, the customary practice is by the tool manufacturing unit concerned technical personnel review, countersign, check the manufacturing process, and then can be posted.


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