Forming die structure of double-wall corrugated pipe

Abstract

The invention relates to the technical field of pipe manufacturing equipment, and discloses a forming die structure of a double-wall corrugated pipe. The forming die structure comprises a die, a mounting plate is integrally formed on the side face of the die, and convex matching keys are integrally formed at the upper end and the lower end of a die matching face in an extending mode. According tothe forming die structure of the double-wall corrugated pipe, by means of reduced matching pressure, when the die is matched, impact is reduced, the die is matched with a front upper positioning groove, negative pressure generated by a negative pressure motor acts on a first long negative pressure groove, and therefore it is guaranteed that the die is matched and aligned; and in the continuous moving process, when the negative pressure of the first long negative pressure groove reaches a certain degree, a sealing piston is attracted to move upwards, so that the negative pressure at the first long negative pressure groove is transmitted to a second long negative pressure groove, a lower positioning groove is matched with the convex matching key, the negative pressure acts on the second longnegative pressure groove in the lower convex matching key, the upper matching surface and the lower matching surface of the die both receive the negative pressure, and tight matching effect is achieved.

Description

technical field [0001] The invention relates to the technical field of pipe manufacturing equipment, in particular to a forming die structure for a double-wall corrugated pipe. Background technique [0002] Double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. The horizontal double-wall corrugated pipe production line is a commonly used double-wall corrugated pipe production equipment. The horizontal double-wall corrugated pipe production line is relatively vertical. The corrugated pipe production line has the advantages of high safety in use, low cost of use, and short construction time. The structure of the horizontal double-wall corrugated pipe production line includes: conveyor chains that are arranged opposite to each other and can rotate in opposite directions. There are several guide rail plates according to the direction respectively, and a semicircular forming mold is installed on the guide rail plate. Under the tra...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a forming mold structure for a double-wall corrugated pipe, which has the advantages of alignment of mold matching positions, good fit performance, and convenient cooling structure setting, and solves the problem that the pressure fit mold is easily damaged and the pipe is deformed due to misalignment. Difficult Problems in Realizing the Cooling Structure

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