Bend pipe apparatus

Abstract

A pipe bending device comprises a bending die which is installed on a force application die holder and is provided with a first groove, and an anvil swage which is installed on the force application die holder and is provided with a second groove. When the bending die matches with the anvil swage, the first groove and the second groove form a die cavity for accommodating a pipe together, the bending die and the anvil swage are both divided into two compartments along respective cross section, the two bending die compartments are both hinged with the force application die holder, and the two anvil swage compartments are both hinged with the force application die holder. The pipe bending device also comprises a die cavity closure holding device for holding the closure state of the die cavity of the bending die and the anvil swage during bending process. Through limiting the pipe during bending process, the bent site of the pipe has low deformation liability on the cross section, so as to improve bending quality and reduce rejection ratio.

Description

technical field [0001] The invention relates to a device for bending a straight pipe into a bent pipe. Background technique [0002] The pipe bender is mainly used to bend the metal pipe into the desired shape to suit various needs. The traditional pipe bending machine generally uses the bending head to press the pipe body, so that the pipe body is bent under force. This kind of equipment is easy to deform the cross section of the bending part of the pipe body during bending, which affects the dimensional accuracy and reduces the The mechanical strength of the bending part of the pipe body is therefore prone to defective and waste products, resulting in waste of materials. [0003] In addition, in order to prevent the tube body from being crushed during bending, a method of arranging a mandrel in the inner cavity of the tube is often adopted. However, after the tube body is formed, the mandrel is not easy to take out, which affects work efficiency. Contents of the inventi...

AI Technical Summary

Problems solved by technology

The traditional pipe bending machine generally uses the bending head to press the pipe body, so that the pipe body is bent under force. This kind of equipment is easy to deform the cross section of the bending part of the pipe body during bending, which affects the dimensional accuracy and reduces the The mechanical strength of the bending part of the pipe body is prone to defective and waste products, resulting in material waste

[0003] In addition, in order to prevent the tube body from being crushed during bending, a method of setting a mandrel in the inner cavity of the tube is often used. However, after the tube body is formed, the mandrel is not easy to take out, which affects work efficiency.

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