Method for forming hole in building component with self-pressurization expansion type die and die stripping

Abstract

The invention provides a method for forming a hole in a building component with a self-pressurization expansion type die and die stripping. The method comprises the following steps that a push rod of the die is pressed into a hard shell until a piston reaches the lower limiting position, a spring is greatly compressed, a locating pin is inserted into a locating groove, and the position of the push rod is locked; a water inlet valve and a water outlet valve of the die are opened, water is fed into an empty cavity and an expansion cavity through a water inlet pipe, air is discharged out through a water outlet pipe, after the empty cavity and the expansion cavity are filled with water, the water outlet valve is closed, and a flexible sleeve expands under the action of water pressure; after the water pressure in the die is balanced with the water pressure of a water source, the water inlet vale is closed, and the flexible sleeve is kept in the expansion state under the action of the water pressure in the die.

Description

technical field [0001] The invention relates to a production process of a building component with holes, in particular to a method for making holes on a building component by using a self-pressurizing expansion mold and demoulding. Background technique [0002] Prefabricated elements manufactured in the construction sector have many structures with holes. When making prefabricated components, metal materials are generally used as hole molds for the formation of holes. When the concrete is solidified to a certain strength, the hole mold needs to be manually rotated or twitched to separate the hole mold from the concrete, which is convenient for smooth demoulding. When the strength reaches a higher level, the hole die is pulled out. The disadvantage of this method of forming holes is that: in the process of making prefabricated parts, it is necessary to manually rotate or twitch the mold one by one, which takes up a lot of human resources, the labor intensity of the workers i...

AI Technical Summary

Problems solved by technology

The disadvantage of this method of forming holes is that: in the process of making prefabricated parts, it is necessary to manually rotate or twitch the mold one by one, which takes up a lot of human resources, the labor intensity of the workers is high, and the production efficiency is low; the degree of solidification of the prefabricated materials needs to be accurately grasped. If the timing is not grasped, it is easy to cause damage to the solidified material, making it difficult to guarantee the quality of the hole. If the manual operation is not timely, the mold will not be able to be demoulded.

However, although these disclosed methods have certain advantages, they are complex in structure and complex in operation, which still cannot solve the above problems, and have not been applied in industrialized production so far.

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