Win Win Mold

Plastic Mold & Molding Solution

January 5, 2023
2:10 am

How to Improve the Precision of Plastic Mold

How to Improve the Precision of Plastic Mold

For the injection mold, the precision of plastic parts is grade 3 and 3a, the weight is 5g, the hardened gating system is used, and the number of cavities is 4-6; The plastic parts are of general accuracy (4-5 levels), the molding materials are locally crystalline materials, and the number of cavities can be 16-20; The weight of plastic parts is 12-16g, and the number of cavities is 8-12; For plastic parts with a weight of 50-g, the number of cavities is 4-8. For amorphous plastic parts, the recommended number of cavities is 24-48, 16-32 and 6-10. When we continue to increase the weight of plastic parts, we rarely use multi cavity molds. For plastic parts with 7-9 accuracy, the maximum number of cavities is 50% more than that of plastics with 4-5 accuracy.

plastic injection molding

2. Determine the parting surface. The position of parting surface shall be conducive to mold processing, exhaust, demoulding and molding operations, and the surface quality of plastic parts.

3. Determine the pouring system (shape, position and size of main runner, runner and gate) and exhaust system (method of exhaust, position and size of exhaust slot).

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

5. Determine the cooling and heating methods, the shape and position of the heating and cooling groove, and the installation position of the heating element.

6. According to die material, strength calculation or empirical data, determine the thickness and overall dimensions of die parts, the overall structure and the positions of all connections, positioning and guide pieces.

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

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

If these problems are solved, the structural form of the mold will be solved naturally. At this time, we should draw the mold structure sketch by hand to prepare for the formal drawing.

Eight Common Injection Mold Structure Classification

14/01/2023 No Comments

Eight common injection mold structure classification One. Single parting surface injection mold When the mold is opened, the movable mold and the fixed mold are separated, so as to take out the plastic parts, which is called single parting surface mold, also called double-plate mold. It is the simplest and most basic form of injection mold, which can be designed as single-cavity injection mold or multi-cavity injection mold according to the need, and is the

Injection Mold Manufacturing Process And The Basic Processing Process Analysis

14/01/2023 No Comments

Injection mold manufacturing process and the basic processing process analysis The injection mold manufacturing process mainly includes. Acceptance of the task. Mold design. Mold manufacturing. Mold inspection and mold trial. Mold modification and repair. Mold maintenance. I. Acceptance of tasks Plastic mold making, first of all, the customer engineers provide product drawings to the mold manufacturer, the manufacturer through the molding plastic production task requirements, the process of collecting, analyzing, digesting product data, this is

The Difference Between Injection Moulds And Plastic Moulds

14/01/2023 No Comments

The difference between injection moulds and plastic moulds Many people can’t tell the difference between injection molds and plastic molds, and many people even think that they are the same kind of molds, just called different. Although injection molds and plastic molds are both molds, but there is a difference between them. Want to figure out the difference between the two, first and Xiaobian together to understand what is injection mold, what is plastic mold.