Plastic Molding Design

June 29, 2020

The problem and solution of injection parts production match up the oil injection

The oil injection mold is manufactured using injection parts as a model, so mass-produced injection parts must be the same as the injection parts when manufacturing the injection mold to avoid the problem of flying oil (paint splashing) during injection. In order to obtain injection parts that are consistent with normal production, for large injection [...]
Injection Molding, Miniature Zinc Die Casting, Plastic Mold Case, Plastic Molding Design
June 28, 2020

Effective measures to solve the oil drop of low hardness soft plastic parts after oil injection

For low hardness PVC and rubber injection parts with a hardness value less than 80 degrees (Shore hardness, GB / T2411—2008), the problem of oil loss has always been a quality problem that is difficult to control and guarantee during production in the oil injection department. The lower the hardness, the more It is difficult [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts
June 16, 2020

The harm of small injection molding machine with large mold for injection production

Small injection molding machines are used for injection production with large molds. Even if the molds can be installed, the ejection force of the injection molding machine is insufficient, and the injection parts are difficult to eject. Therefore, the operator often has to adjust the ejection speed of the ejector rod. To form an impact [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts
June 14, 2020

The reason why the POM and PVC materials produced by the old injection molding machine often scorch

Generally speaking, the barrel, screw and check ring of the old injection molding machine mostly wear to different degrees, and the cooperation gap between them will be relatively large, especially the injection molding machine that often produces POM and PVC Big. Due to the increased gap, during injection, part of the melt will flow back [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts
June 12, 2020

Application and skills for adjusting the filling speed of each cavity

In a multi-cavity mold, the filling speed of various cavities is often uneven (unbalanced). Some cavities are filled quickly, and some are filled slowly. At this time, injection parts with fast filling are prone to problems such as overflow, white top and trapped gas, while slow filling is prone to shrinkage or insufficient filling. The [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts
June 11, 2020

Solutions to the phenomenon of dragging of electroplated molds during injection of products

In order to prevent the core and cavity of the mold from rusting, the cavity parts of some molds need to be electroplated and make their surfaces look very bright, but the product is often smeared when the transparent plastic is injected (scraped by the core when demolding) Out of obvious patterns). In fact, the [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts
June 10, 2020

Reasons for the guide pillar and guide bush to be easily engaged after disassembling and installing a large mold

The lifting of larger molds often needs to be hoisted by cranes. Because of the need for mold repair in the production process, only half of the molds need to be disassembled. When the repair is completed and the half of the mold is hoisted and installed, the single side mold is often Too tight [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

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