External flanging puncher pin

Abstract

The invention relates to an external flanging puncher pin which comprises an external flanging mold core and a deburring outer sleeve. One end of the external flanging mold core is an external flanging end; the other end of the external flanging mold core is a connecting end; and the external flanging end is in a shape of a cone with the diameter gradually increasing towards the connecting end. The deburring outer sleeve is in detachable connection with the external flanging mold core; the external flanging mold core is mounted in an inner hole of the deburring external sleeve; one end of the deburring outer sleeve is a deburring end; and a gap is arranged between the deburring end and the external flanging end. The inner hole is a step hole with a first hole section and a second hole section; the inner diameter of the first hole section is smaller than the inner diameter of the second hole section; the connecting end of the external flanging mold core is mounted in the first hole section through a fastener; the second hole section forms the deburring end; and a chamfer is arranged on the step portion of the second hole section. According to the external flanging puncher pin, the inner wall and the outer wall of a copper tube are compressed simultaneously through the external flanging end and the deburring end, so that the requirements for the inner diameter dimensions and the outer diameter dimensions of the copper tube are met; inner burrs are removed through the chamfer in the external flanging process, the quality of a tube opening is improved, and the production efficiency is also improved.

Description

technical field [0001] The invention relates to the field of pipe end forming processing dies, in particular to a flanging punch. Background technique [0002] The quality of the copper pipe deburring nozzle has always been a bottleneck in the pipe end forming process. The quality of the processing directly affects the efficiency of the inner pipe and the upper quick connector. Since the current pipe end forming dies only have two types, the common flaring die and the shrinking die, there is no special deburring punch. [0003] In order to ensure the quality requirements of the upper quick connector and the inner piping, it is often necessary to deal with the burrs and the outer flanging problems at the same time to ensure the size requirements of the inner and outer diameters of the copper pipes. Therefore, the deburring process needs to be processed in two strokes. Generally, the flanging operation is performed first, and then the deburring operation is carried out. Becau...

AI Technical Summary

Problems solved by technology

Therefore, the deburring process needs to be processed in two strokes. Generally, the flanging operation is performed first, and then the deburring operation is performed. Since the two processes cannot be carried out at the same time, and the above method has complicated procedures and low production efficiency

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