Three-time compulsive core-pulling mechanism of plastic pipe mold flaring

Abstract

The invention discloses a three-time compulsive core-pulling mechanism of a plastic pipe mold flaring. The three-time compulsive core-pulling mechanism of a plastic pipe mold flaring comprises an upper doubling plate and a lower doubling plate. Mold feet and a top plate are installed on the lower doubling plate. The top plate is connected to a push rod. A movable mold frame and a movable mold are installed on the mold feet. A plastic flaring pipe member is arranged between the movable mold and a fixed mold. A core-pulling mechanism is arranged at a flaring of the plastic flaring pipe member. The core-pulling mechanism of the flaring comprises a fixing support installed at one side of the movable mold frame. A core-pulling oil cylinder is installed at an end of the fixing support. A piston rod of the core-pulling oil cylinder is connected to a guide block. A locating piece is slidingly arranged on the guide block. The locating piece is connected to an inner core. The inner core is connected to an inner wall of the plastic flaring pipe member. A flaring core is sleeved outside the inner core. The head of the flaring core contacts with the inner wall of the flaring of the plastic flaring pipe member. A fixing block is installed on a tail part of the flaring core. A flaring outer sleeve is connected to a front part of the guide block. The head of the flaring outer sleeve contacts the outer wall of the flaring of the plastic flaring pipe member. A spacing groove is arranged in a tail part of the flaring outer sleeve. The spacing groove has a cooperation with the fixing block. The wall of the tail part of the flaring outer sleeve has a cooperation with the wall of the fixing block.

Description

technical field [0001] The invention relates to a core-pulling mechanism for three times of forced removal of a mold of a plastic pipe fitting, which belongs to the field of plastic molds. Background technique [0002] Use injection molds to produce plastic products, such as plastic pipe fittings, especially plastic pipe fittings with flared openings. First, the flared openings need to be removed from the mold before the plastic pipe fitting body can be ejected out of the mold by the mold ejector mechanism to achieve demoulding. . In the prior art, the flaring and demoulding of plastic pipe fittings adopts a block structure, and its disadvantages are: the mold opening action is complicated, the processing cost is high, and the production efficiency is low, especially the blocks are easily scratched and damaged during the demoulding action. Trouble with maintenance. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of...

AI Technical Summary

Problems solved by technology

In the prior art, the flaring and demoulding of plastic pipe fittings adopts a block structure, and its disadvantages are: the mold opening action is complicated, the processing cost is high, and the production efficiency is low, especially the blocks are easily scratched and damaged during the demoulding action. maintenance trouble

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