Die core pulling device for automobile lamp shell and use method of die core pulling device

Abstract

The invention discloses a die core pulling device for an automobile lamp shell and a use method of the die core pulling device, and relates to the technical field of dies. The die core pulling devicecomprises an upper die and a lower die, wherein the upper die and the lower die are used for product injection molding. The core pulling device comprises a core pulling hole formed in the side face ofthe upper die, the upper die is slidingly connected with a main core for product side hole forming through the core pulling hole, a through hole communicating with a groove is formed in the surface of the main core, and the main core is slidingly connected with an auxiliary core for product blind hole forming through the through hole. The core pulling device further comprises a drive portion anda transmission portion, the auxiliary core is driven to be firstly separated from a blind hole of a product through the drive portion under the effect of the transmission portion, and then the main core is driven to be separated from a side hole of the product. Through the cooperation of all the structures, through operation of one drive portion, the auxiliary core can be driven to move downwardsto be separated from the blind hole of the product, then the main core is driven to be separated from the side hole of the product, thus, following secondary machining is avoided, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a mold core-pulling device for an automobile lamp housing and a method for using the same. Background technique [0002] Most of the lamp housings of automobile lamps are formed by injection molding with injection molds. The mold opening process is usually as follows. After the mold cavity inside the mold forms the product, the movable mold moves and the fixed mold is separated to open the mold cavity and take out the product. [0003] For example, the secondary core-pulling mechanism of the automobile front fog lamp reflector mold disclosed in the cited document 1 Chinese patent CN201721356044.3, the date of authorization announcement: 20180424, when this invention is in use, first use the oil cylinder to extract the core, so that the core and The inner surface of the "installation column blind hole" is completely separated, and then the slider and the core are taken out as a who...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mold core-pulling device for automobile lamp housings and its use method, which can drive the secondary core to move down and break away from the blind hole of the product through the operation of a driving part, and then drive the main core to move down. The core is separated from the side hole of the product, thereby avoiding subsequent secondary machining and improving the production efficiency. The core pulling of the blind hole in the side hole generally needs to be completed by secondary processing and other methods, so there is a problem of time-consuming and laborious

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