Injection mold side inclined wedge up and down inside buckle double ejection mechanism

Abstract

Discloses is a side edge inclined wedge upper-lower inner upturned double demoulding mechanism for an injection mold. The side edge inclined wedge upper-lower inner upturned double demoulding mechanism comprises an upper compound plate and a lower compound plate. A fixed mold and inclined guide pillars are arranged below the upper compound plate. Mold feet, an upper ejector retainer plate and a lower ejector retainer plate are arranged on the lower compound plate. Ejector pins are arranged between the upper ejector retainer plate and the lower ejector retainer plate. A movable mold is arranged on the mold feet. Side core-pulling slide blocks are arranged on the movable mold. Inclined guide holes which are matched with the inclined guide pillars are formed in the side core-pulling slide blocks. The side edge inclined wedge upper-lower inner upturned double demoulding mechanism is characterized in that side pulling holes, upper pin holes, lower pin holes, upper spring grooves and lower spring grooves are formed in the side core-pulling slide blocks, side inclined wedges are arranged in the side pulling holes and one ends of the side inclined wedges are connected with a piston rod of an oil cylinder; location holes are formed in the side inclined wedges, and upper inclined guide faces and lower inclined guide faces are formed at the other ends of the side inclined wedges; upper upturned slide blocks are arranged on the upper inclined guide faces, and lower upturned slide blocks are arranged under the lower inclined guide faces; locating pins are arranged in the upper pin holes and the lower pin holes and penetrate through the upper upturned slide blocks, the lower upturned slide blocks and the side inclined wedges; upper springs which make contact with the upper upturned slide blocks are arranged in the upper spring grooves, and lower springs which make contact with the lower upturned slide blocks are arranged in the lower spring grooves.

Description

technical field [0001] The invention relates to an injection mold, in particular to an injection mold side inclined wedge with an upper and lower undercut double demoulding mechanism. Background technique [0002] After the injection molding of the plastic part, if the side wall of the plastic part is formed with an upper undercut and a lower undercut, and the upper and lower undercuts correspond to each other, the existing technology is to make the depth of the upper and lower undercuts smaller, and then The undercut is directly disengaged through strong release, so the undercut is prone to breakage, etc., resulting in product scrapping, with a high scrap rate, and because the depth of the undercut is made small, its fastening ability is poor. When assembling plastic parts with other parts, assembly Unreliable, affecting the use effect. For this reason, someone has designed in the side core-pulling slider 1' of the moving mold, an upward inclined roof 2' that is inclined d...

AI Technical Summary

Problems solved by technology

[0002] After the injection molding of the plastic part, if the side wall of the plastic part is formed with an upper undercut and a lower undercut, and the upper and lower undercuts correspond to each other, the existing technology is to make the depth of the upper and lower undercuts smaller, and then The undercut is directly disengaged through strong release, so the undercut is prone to breakage, etc., resulting in product scrapping, with a high scrap rate, and because the depth of the undercut is made small, its fastening ability is poor. When assembling plastic parts with other parts, assembly Unreliable, affect the use effect

For this reason, someone has designed in the side core-pulling slider 1' of the moving mold, an upward inclined roof 2' that is inclined downward and an upward inclined roof 3' that is inclined upward (such as Figure 5 As shown), the upper inclined top cooperates with the upper undercut 4', the lower inclined top cooperates with the lower undercut 5', and the other ends of the upper and lower inclined tops are respectively connected with the spring 6' and the limit pin 7'. When the block moves to the outside, use the spring to support the upper and lower inclined tops, so that the upper and lower inclined tops will not be pulled out first, but the upper and lower inclined tops will come out of the buckle inwardly along the inclined direction of the inclined guide hole, and then The upper and lower slanted roofs are pulled out to the outside by the side core pulling slider, but this structure is only suitable for products with side wall openings because the upper and lower slanted roofs will be pressed against the wall of the movable mold when the mold is closed. It cannot be used for products with side walls made of solid surfaces and top and bottom undercuts at the same time

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