Harvard push tube demoulding mechanism mold with end cap edge-covering with pipe joint

Abstract

The invention relates to a Harvard push tube demoulding mechanism mold with an end cap edge-covering with pipe joint. The mold comprises a movable mold plate, and an upper mold seat plate and a panelarranged above the movable mold plate; mold cavities are formed in the top of the movable mold plate and are connected by a flow channel; the bottom of the movable mold plate is provided with a movable mold backing plate; the bottom of the movable mold backing plate is provided with a first cover plate, a first push plate, a second cover plate and a second push plate; a first cover plate and the first push plate are combined into a second ejection plate of a mold base, and the second cover plate and the second push plate are combined into a first ejection plate of the mold; and the panel is provided with a positioning ring and a gate bushing, and the gate bushing is in communication with the mold cavities, and the bottoms of the mold cavities are correspondingly installed with an ejectionand demolding mechanism of the edging insert. In the mechanism, after a forming part of the outer wall of a pipe joint column is divided into two halves of jacking tube, the first ejection through a secondary plate ejecting mechanism, a guide block is arranged to drive the two halves of the jacking tube to move sideways to pull the core, so as to achieve first-time separation of the outer wall ofa pipe joint column and the left side of the forming part to achieve complete demoulding of the plastic part.

Description

technical field [0001] The invention relates to the field of injection moulds, in particular to a mold of a Haval push tube demoulding mechanism with pipe joint end cap wrapping. Background technique [0002] The structural dimensions of plastic parts with pipe joint end caps are as follows: Figure 1a , Figure 1b , Figure 1c As shown, the plastic parts are required to be injection molded with ABS material, and the average wall thickness of the plastic parts is .mm. Its characteristic plastic parts are mainly screw post holes, bosses, cylindrical holes and other features; one of the relatively large features is the pipe joint column feature on the plastic part, which is a straight pipe wall feature, but there is an expansion card at its lower end head. [0003] Combined with the shape characteristics of plastic parts, when designing the mold structure, there are no special difficulties in the setting up of the gating system, parting settings and exhaust design of the pl...

AI Technical Summary

Problems solved by technology

Due to the many holes on the upper and lower ends, after the plastic part is formed, the tight force on the molded part of the cavity is very large, and it is difficult to remove the mold during demoulding; the characteristic of the joint pipe string is that the expansion chuck at the lower end forms a full ring Undercut, if this undercut is demolded by forced demoulding, the plastic part will be damaged. When other mechanisms such as sliders are used, the design space of the mechanism is limited, and the movement interference of parts during part design is difficult to deal with

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