Filter type spray nozzle for injection molding machine

Abstract

The invention discloses a filter type spray nozzle for an injection molding machine. The filter type spray nozzle comprises a spray nozzle body, wherein a step-shaped central through hole is formed in the spray nozzle body; the rear outer wall of the spray nozzle body is provided with a limiting part outwards extending in a radial direction; the middle part of the front end of the spray nozzle body is provided with a connecting part which axially extends forwards; the outer wall of the connecting part is provided with outer threads; a spray nozzle head is in screw joint on the connecting part; the middle part of the spray nozzle head is provided with a spray nozzle hole; the spray nozzle hole is communicated with the step-shaped central through hole; an electric heating device is arranged on the outer wall of the upper part of the spray nozzle body; the front part of the step-shaped central through hole is a small-diameter end, and the rear part of the step-shaped central through hole is a large-diameter section; the rear part of a primary filter sleeve is provided with a large-diameter connecting sleeve; the large-diameter connecting sleeve is in plug bush in the large-diameter section; and the front end surface of the large-diameter connecting sleeve abuts against the front end surface of the large-diameter section. The filter type spray nozzle can be used for carrying out multi-time filtering on plastic raw materials, and guarantees injection molding effect; meanwhile, each part is convenient to dismount, clean and clear; and damaged parts are also very convenient to replace and maintain.

Description

Technical field: [0001] The invention relates to the technical field of injection molding machine accessories, in particular to a filter nozzle for injection molding machines. Background technique: [0002] The material melting of the injection molding machine is realized through the melt barrel assembly. Under a certain back pressure, it is necessary to produce uniform injection molding products, especially for the injection molding of plastic materials with good fluidity. In order to ensure the injection molding effect, the nozzles that need to be used can filter the injection molding plastic materials, while the existing nozzles The filter device in the body is troublesome to disassemble and not easy to clean, so that the nozzle often needs to be replaced, which is very troublesome and increases the cost. At the same time, there is no heating equipment outside the existing nozzle, so that the residual plastic in the nozzle after injection molding will in the nozzle body ...

AI Technical Summary

Problems solved by technology

Under a certain back pressure, it is necessary to produce uniform injection molding products, especially for the injection molding of plastic materials with good fluidity. In order to ensure the injection molding effect, the nozzles that need to be used can filter the injection molding plastic materials, while the existing nozzles The filter device in the body is troublesome to disassemble and not easy to clean, so that the nozzle often needs to be replaced, which is very troublesome and increases the cost. At the same time, there is no heating equipment outside the existing nozzle, so that the residual plastic in the nozzle after injection molding will in the nozzle body and not easy to remove

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