Oil cylinder anti-returning mechanism of door handle injection mold

Abstract

The invention discloses an oil cylinder anti-returning mechanism of a door handle injection mold. The oil cylinder anti-returning mechanism comprises a template and a sliding block insert used for undercutting a forming product, the lower surface of the template is provided with a mold core for forming the upper surface of the product, the oil cylinder anti-returning mechanism further comprises anoil cylinder, a shovel machine and a locking block, a groove is formed in the upper surface of the template, the oil cylinder is fixed to the side of the template, the shovel machine is located in the groove, a piston rod of the oil cylinder extends into the groove and is connected with the shovel machine, one end, near the product, of the shovel machine is connected with the sliding block insert, and the sliding block insert is movably arranged in the mold core in a matched mode, the shovel machine is slidably arranged in the groove in the groove in a matched mode, the locking block is located in the groove, the locking block is snapped on the shovel machine during mold closing, and the locking block is disengaged from the shovel machine when the mold is opened. The oil cylinder anti-returning mechanism of the door handle injection mold is simple in structure and high in reliability.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to an anti-retreat mechanism for an oil cylinder of a door handle injection mold. Background technique [0002] The door handle is one of the important parts of the car. The door handle is molded through the gas-assisted injection mold. The door handle needs to use the oil cylinder to drive the slider to pull the core. During the injection molding process, the oil cylinder will retreat due to the pressure of the injection molding. Moreover, the inside of the door handle is a hollow structure, and the pressure on the inner wall of the product is high during the pressure holding stage. The ordinary oil cylinder structure will cause the slider to retreat, and the product will burst due to the air pressure. Generally, an anti-retraction mechanism for the oil cylinder is designed. According to the existing technology, the structure of the ordinary oil cylinder anti-retraction mechanism Com...

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Problems solved by technology

[0002] The door handle is one of the important parts of the car. The door handle is molded through the gas-assisted injection mold. The door handle needs to use the oil cylinder to drive the slider to pull the core. During the injection molding process, the oil cylinder will retreat due to the pressure of the injection molding. Moreover, the inside of the door handle is a hollow structure, and the pressure on the inner wall of the product is high during the pressure holding stage. The ordinary oil cylinder structure will cause the slider to retreat, and the product will burst due to the air pressure. Generally, an anti-retraction mechanism for the oil cylinder is designed. According to the existing technology, the structure of the ordinary oil cylinder anti-retraction mechanism complex, poor reliability

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