Injection mold reset protection device

Abstract

The invention discloses an injection mold reset protection device. The structure of the device comprises an upper die holder, an upper die, a guide post, a lower die, a rectangular cavity, a reset protection device and a lower die holder, wherein the upper die and the lower die are arranged as an upper structure and a lower structure and are mechanically matched with each other; the lower die is fixedly arranged at the bottom of the upper die holder and is fixedly arranged on the lower die holder; the rectangular cavity is arranged between the lower die holder and the lower die; and the resetprotection device is arranged in inner cavities of the lower die holder and the lower die. According to the injection mold reset protection device provided by the invention, under the combined actionof a power driving device, a mechanical driving mechanism, a clamping rod mechanism, a sliding mechanism, a connecting mechanism, a driving control device and a mechanical fixing device, a thimble canstill operate normally even if a core pulling electromagnetic valve fails, thereby ensuring the normal operation of the mold device and effectively avoiding mold impact.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to a reset protection device for injection molds. Background technique [0002] In the currently commonly used injection molds, there is no mold reset protection device, and the equipment cannot recognize whether the mold thimble is completely reset, and the core-pulling mold is closed when the thimble is not completely reset, and the interference between the mold thimble and the core-pulling mechanism occurs. , the collision between the two will easily lead to damage to the ejector pin of the mold. [0003] At present, plastic injection molded parts are widely used in daily necessities, electronic products or car decoration. Plastic injection molded parts are processed by a plastic mold clamping machine, and the working condition of the plastic mold clamping machine directly determines the quality of the injection molded workpiece. In the existing mold clamping machine, the ejector...

AI Technical Summary

Problems solved by technology

[0004] In the above actions, the mold clamping action is controlled by the mold clamping solenoid valve, and the ejector pin reset action is controlled by the core pulling solenoid valve. The mold clamping solenoid valve controls the mold clamping action according to the set mold clamping time. If the mold is lubricated Not good or when the core-pulling solenoid valve of the equipment fails, the reset time of the ejector pin is too long or cannot be reset, which will cause mold collision

In the plastic injection molding industry, the above phenomenon of mold collision often occurs and cannot be predicted and prevented, especially for molds with three-dimensional lines or corroded surfaces. Once mold collision occurs, the mold will be damaged, which will not only affect the normal production, but also cause Generate high mold repair costs

In addition, if the mold cannot be repaired to the desired effect, there will be certain difficulties in future production, which will bring certain economic losses and production pressure to the company.

[0005] In the prior art, the reset of the injection mold is controlled by the core-pulling solenoid valve. When the core-pulling solenoid valve does not work normally, the ejector pin resets for too long or cannot be reset, which will cause mold collision.

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