Plastic sealing injection molding device and its injection head

Abstract

The invention provides a plastic-packaging injection-molding device and an injection head thereof, and belongs to the field of plastic packaging technology of packaging technologies. The vertical face of the injection head employed by the plastic-packaging injection-molding device is provided with a groove, and a sealing body of a wear-resistant material is disposed in the groove. The sealing body oppositely acts on the wall of a material canister, so that the friction between the vertical face of the injection head and the material canister wall is reduced. The plastic-packaging injection-molding device has small friction between the injection head and the material canister during operation, and plastic-packaged molded products have high quality.

Description

technical field [0001] The invention belongs to the technical field of packaging plastic sealing, and relates to a plastic sealing injection molding device used in the packaging plastic sealing process, in particular to an injection head with a sealing body used in the plastic sealing injection molding device. Background technique [0002] During the encapsulation process, the injection molding process used to form the plastic package is included. In the process of plastic sealing, it is necessary to use a plastic sealing injection molding device to inject resin and other plastic sealing materials into the cavity in the plastic sealing mold. [0003] In the existing plastic sealing injection molding device, the resin in the pressing cylinder of the injection head used can make the resin flow in the predetermined direction in the plastic sealing mold. Therefore, there must be a certain sealing effect between the injection head and the barrel wall. Usually, a 0.2mm deep groo...

AI Technical Summary

Problems solved by technology

With long-term use, these friction effects will cause the friction coefficient between the injection head and the barrel wall to increase continuously and the wear will increase, thereby reducing the life of the injection head and barrel and increasing the frequency of replacement; on the other hand On the one hand, as the gap between the injection head and the barrel wall is enlarged due to wear, the resin particles of the molding compound ring are worn and will fall from the gap or get stuck in the gap, which will cause the injection head and the material The cylinders are stuck, the injection head of the mold is difficult to completely reset, the height is different, and it is difficult to inject in place, which affects the quality of the plastic sealing product. At the same time, the falling resin particles are likely to cause the gate of the plastic sealing mold to be blocked, which also seriously affects the quality of the plastic sealing product.

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