Plastic mold formed by top plate return mechanism

Abstract

The invention discloses a plastic mold adopting an ejection plate return mechanism for molding, belongs to the field of thermoplastic plastic molds, mainly applies to molds of plastic products provided with thin and long inserts, and particularly to a mold provided with an insert partially participating in molding. The plastic mold is characterized in that the ejection plate return mechanism is divided into a reset push rod series and an ejection plate series, wherein ejection plate return is realized through matching of the reset push rod series and the ejection plate series, a ball jackscrew 33 and an insert mounting inlay piece A25 are in threaded connection and are locked and fixed, and the ball part of the ball jackscrew 33 and an insert 38 are in surface contact and are tightly matched. The plastic mold has the benefits as follows: the ejection plate return mechanism is utilized to realize ejection movement of an ejection block 23 in a mold opening process, so that the plastic mold is conveniently mounted by an operator, an ejection plate 30 returns firstly and a slider A19 and a slider B20 return later in a mold closing process, the stable and safe operation of the mold is guaranteed, the mounting steps are simplified, the molding period is shortened, and the work efficiency and the production efficiency are improved.

Description

technical field [0001] The invention belongs to the field of molding molds for thermoplastic plastics, relates to a plastic mold molded by a top plate return mechanism, and is mainly applied to molding molds for plastic products provided with elongated inserts. Background technique [0002] The characteristic of plastic products with slender inserts is that the inserts are metal stamping products, which are characterized by being slender and have a certain appearance shape. During the molding process, they need to be installed in the mold cavity, and the installation inserts cooperate with the inserts The part needs to be closely matched to achieve the sealing effect, which increases the difficulty of installing the insert. The installation of the insert requires installation accuracy, greater force and operating space. At present, for plastics with slender inserts The molding mold of the product often adopts a detachable mold structure to realize the installation of the ins...

AI Technical Summary

Problems solved by technology

[0002] The characteristic of plastic products with slender inserts is that the inserts are metal stamping products, which are characterized by being slender and have a certain appearance shape. During the molding process, they need to be installed in the mold cavity, and the installation inserts cooperate with the inserts The part needs to be closely matched to achieve the sealing effect, which increases the difficulty of installing the insert. The installation of the insert requires installation accuracy, greater force and operating space. At present, for plastics with slender inserts The molding mold of the product often adopts a detachable mold structure to realize the installation of the insert. This kind of mold structure needs to have a detachable insert designed to facilitate assembly and disassembly. In order to meet the molding cycle, the detachable Multiple sets of inserts need to be processed for recycling. The disadvantages are heavy workload for the operator, high mold cost and difficulty in guaranteeing mold accuracy.

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