Injection valve bush

Abstract

The invention relates to an injection valve bushing, which comprises a ring-shaped inner lining pipe (1), rubber (2) and an outer lining pipe (3), wherein the rubber (2) is arranged on the inner lining pipe (1) and the outer lining pipe (3). Between the outer lining pipes (3), it is characterized in that: the rubber (2) is provided with an air contraction part (21), and the air contraction part (21) includes a plurality of contraction bodies (211), and connects the Any two communicating pipes (212) in the plurality of constrictions (211); the plurality of constrictions (211) are equal-sized parts of the same cylindrical ring; any two constrictions connected in the air constriction (21) There are multiple communicating pipes (212) of the body (211), which are connected sequentially from top to bottom from the side of the contraction body (211). There are multiple contraction bodies inside the rubber, which can transfer the internal air to other contraction bodies through the connecting pipe when the contraction body is under pressure, so as to reduce the pressure received by the rubber body and prevent the rubber from tearing inside.

Description

Technical field [0001] The invention relates to a bush, and specifically designs a bush for an injection valve of a glue dispensing device. Background technique [0002] The jet valve is an important device in the glue dispensing device. It mainly plays the role of jetting glue and generally needs to be installed in the bushing. [0003] Existing bushings generally use rubber to dampen the inner and outer tubes on both sides of the inner and outer sides, but since they are all solid, the deformation of the bushing will increase significantly when the pressure on the bushing is too high. , In extreme cases, the internal rubber may tear, causing serious consequences. [0004] In view of the above-mentioned shortcomings, the designer actively researches and innovates in order to create a new structure of the bushing for the injection valve of the dispensing device to make it more industrially valuable. Summary of the invention [0005] In order to solve the above technical problems, th...

AI Technical Summary

Problems solved by technology

[0003] Existing bushings generally place rubber in the inner and outer tubes on both sides of the inner and outer sides for shock absorption, but because they are all solid, when the bushing receives too much pressure, the deformation of the bushing will increase significantly , in extreme cases, the inner rubber may tear with serious consequences

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