Injection mold for lampshade production

Abstract

The invention discloses an injection mold for lampshade production, and relates to the technical field of automobile lamp production. The injection mold for lampshade production comprises an upper mold block and a lower mold block, a limiting column is movably sleeved with the upper mold block, the bottom of the limiting column is fixedly installed at the top of the lower mold block, an injection molding groove is downwards formed in the top of the lower mold block, an injection molding block is fixedly installed at the bottom of the upper mold block, and a driving bin is hollowed out in the injection molding block. According to the injection mold for lampshade production, after injection molding, the temperature of the upper mold block is reduced, the internal air pressure of the driving bin is reduced, and in the ascending process of the upper mold block, a first driving ball and a second driving ball enable an anti-adhesion block to descend through a driving mechanism and a connecting mechanism under the action of the internal air pressure of the driving bin, and the anti-adhesion block can push a lampshade at the bottom of the injection molding block, so that the lampshade is separated from the injection molding block, and the lampshade is prevented from being attached to the bottom of the injection molding block to affect the demolding process.

Description

technical field [0001] The invention relates to the technical field of automobile lamp production, in particular to an injection mold for lampshade production. Background technique [0002] A lampshade is a cover set on the periphery of the flame or on the bulb to gather light or protect against weather. The lampshade is not only used to cover the lamp to gather the light together, but also to prevent electric shock and protect the eyes. The lampshade is not only used to cover the lamp to gather the light, but also to prevent electric shock and protect the eyes, so most lamps will have a lampshade. The production of existing automobile headlight plastic lampshade is to carry out injection molding to thermoplastic by injection mould. [0003] However, in the existing injection mold, when the upper module is separated from the lower module after the injection molding is completed, because the automobile headlight lampshade is a curved surface, the automobile headlight lampsh...

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Problems solved by technology

[0003] However, in the existing injection mold, when the upper module is separated from the lower module after the injection molding is completed, because the automobile headlight lampshade is a curved surface, the automobile headlight lampshade may be adsorbed on the bottom of the upper module due to friction and air pressure. Not only does it affect the demoulding rate, but it is also prone to damage when the car headlight shade is detached from the upper module

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