Demoulding mechanism for semicircular bend die

Abstract

A demoulding mechanism for a semicircular bend die comprises a die base plate. A cavity die grid is installed on the base plate. A cavity insert block is installed on the cavity die grid. A semicircular bend cavity is disposed in the cavity insert block. A semicircular bend is molded in the semicircular bend cavity. An inner wall of the semicircular bend is provided with a semicircular bend core. The invention is characterized in that the semicircular bend core comprises a first arc core and a second arc core. The outer end of the first arc core is connected with a first core rotary plate, which is driven by a first swinging cylinder to rotate around a first circle center fulcrum. The first circle center fulcrum is slidably arranged inside the cavity die grid and is driven by the first core rotary plate through the first swinging cylinder to slide along a straight line in the cavity die grid. The outer end of the second arc core is connected with a second core rotary plate, which is driven by a second swinging cylinder to rotate around a second circle center fulcrum. The second circle center fulcrum is fixed inside the cavity insert block. By the adoption of the scheme provided by the invention, the semicircular bend can be demoulded smoothly.

Description

technical field [0001] The invention relates to a demoulding mechanism of a semicircular (U-shaped) elbow mold, which belongs to the field of plastic molds. Background technique [0002] Existing plastic pipe fitting bends (joints) are generally 45° elbows or 90° elbows, etc. If a 180° system circuit is encountered, it is also connected into a circuit through two 90° elbows, which is very inconvenient to install , or replace the connection with an ordinary P-shaped elbow, but there are shortcomings such as less water storage space, poor anti-blocking function, and unsmooth circulation. Therefore, it is necessary to design an overall semicircular (U-shaped) elbow However, when an integral semicircular elbow is produced in an injection mold, the semicircular elbow core in the prior art cannot be drawn out from the inner wall of the semicircular elbow, and it is difficult to demould the mold, so that the market is still blank . Contents of the invention [0003] The purpose...

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Problems solved by technology

[0002] Existing plastic pipe fitting bends (joints) are generally 45° elbows or 90° elbows, etc. If a 180° system circuit is encountered, it is also connected into a circuit through two 90° elbows, which is very inconvenient to install , or replace the connection with an ordinary P-shaped elbow, but there are shortcomings such as less water storage space, poor anti-blocking function, and unsmooth circulation. Therefore, it is necessary to design an overall semicircular (U-shaped) elbow However, when an integral semicircular elbow is produced in an injection mold, the semicircular elbow core in the prior art cannot be drawn out from the inner wall of the semicircular elbow, and it is difficult to demould the mold, so that the market is still blank

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