Internal core pulling injection mold

Abstract

The invention provides an internal core pulling injection mold, which is used for substituting a pitched roof core pulling mechanism for performing core pulling on a reverse buckle inside a plastic product and can solve the problems of thorn generation, bending deflection, abrasion breakage, limitation of pitched roof angles and the like which are easy to cause in the pitched roof core pulling ejection movement process. The technical scheme is that: the core pulling mechanism consists of an externally-suspended pull rod structure, a core pulling plate, a core pulling rod, a core pulling sliding block and a spring and is arranged on the forward and reverse sides of the mold, wherein the core pulling plate is fixedly connected with a moving die of the mold; the spring is arranged between the core pulling plate and a movable template; the core pulling rod passes through the movable template to be fixed on the core pulling plate; and the core pulling sliding block is arranged in an embedded block and is in sliding fit with the core pulling rod. When the mold is opened, the movable template of the mold is separated from a stopping block of the externally-suspended pull rod structure and drives the core pulling sliding block to slide under the applied force of the spring so as to realize core pulling.

Description

technical field [0001] The invention belongs to the field of mold design, and in particular relates to an inner core-pulling injection mold. Background technique [0002] In the design process of injection molds, the core-pulling mechanism for the internal undercut of general plastic products is generally solved by the inclined top core-pulling mechanism. The inclined top core-pulling mechanism is mainly composed of T-shaped blocks, inclined top guide blocks, and inclined top bodies. The oblique hole cooperates with the oblique acrosome and guides the oblique acrosome. During the movement, the ejector rod of the injection molding machine pushes the bottom needle plate, and the ejector plate and the bottom needle plate move toward the moving platen under the action of the thrust, driving the inclined ejector mechanism to eject in an oblique direction, and the undercut of the product comes out. The structure shows the view figure 1 . Due to its own structural composition an...

AI Technical Summary

Problems solved by technology

[0008] The invention provides an inner core-pulling mechanism of an injection mold, which is used to replace the inclined top core-pulling mechanism of the injection mold in the prior art, so as to solve the problems of thorns, bending deformation, wear and tear, Restricted by the angle of the inclined roof, etc.

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