Custom requirements for plastic molds


The first stage of plastic mold customization requireme […]

The first stage of plastic mold customization requirements: the purpose of subsidies-point the disadvantages of plastic products. The second step: the purpose of decoration-to promote product value. Step 3: Highly hand-planned era with compound stripes. Step 4: Use 3D stripes to enter the era of high quality.

1: After the mold is used for a long time, the fillet needs to be ground. After grinding, the fillet surface needs to be demagnetized and cannot be magnetic. Otherwise, clogging is likely to occur. Mold use companies can calculate detailed records, their use, maintenance (smooth, clean, rust-proof) and damage status to determine which parts, the degree of component damage or wear, provide the information needed to find and resolve problems, mold technology Parameters and product usage data to reduce mold test time and increase yield. You must test the mold function under the running state of the injection molding machine and mold, measure the proportion of the final molded plastic part, use this information to determine the current status of the mold, find the damage locations such as cavity, core, cooling system and parting surface, Use the plastic part supply information to determine if the mold is damaged and how to repair it.

The mold is fully developed, and a complete intellectual property system must be constructed from the beginning. After that, using gradually gathered industrial technologies, the company completed its own industrial products and summarized the competitiveness of the advancing industry. Within 12 to 5 hours, the mold will become a mall environment where war and opportunity coexist.

Spray marks, also known as spray saliva, are 65-rod streamlines that appear in product gates, which often appear when the mold is a side gate. If the plastic melt flows at a high speed through narrow areas such as nozzles, runners, and gates, and then suddenly enters a relatively large area that is open, the melt material will bend like a snake in the direction of flow and quickly cool after contacting the mold surface.

High-gloss injection molding can eliminate weld lines, weld lines, ripples, and silver patterns on the product surface, completely solve the surface shrinkage of plastic products, and make the surface finish of the product reach the level of a mirror, so that the surface state of the mold can be almost reproduced and a trace-free effect .

When filling the mold at a low speed, the flow rate is stable, the product size is relatively stable, the fluctuation is small, the stress inside the product is low, and the stress in each direction of the product tends to be consistent (for example, immersing polycarbonate parts in carbon tetrachloride, (Parts molded by high speed injection tend to crack, and low speed tends to not crack). Under slower filling conditions, the temperature difference of the material flow, especially when the temperature difference between the material before and after the nozzle is large, can prevent shrinkage and sag. However, if the filling time lasts for a long time, the combination may delaminate and produce incorrect weld marks, which will not only affect the appearance but also significantly reduce the mechanical strength.

Plastic mold customization requires that the compression pressure and speed are usually 50% to 65% of the pressure and speed of the plastic filled cavity. That is, the compression pressure is about 0.6 to 0.8 MPa lower than the injection pressure. The compression pressure is lower than the injection pressure, so during a considerable compression time, the load of the oil pump is low, the life of the physical pump is long, and the power consumption of the pump motor is also low.

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