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Punching head

A punch and necking technology, which is applied in the field of pipe end forming and processing molds, can solve the problems of flanging, low production efficiency, complicated procedures, etc., and achieve the effects of ensuring the inner diameter size, improving production efficiency, and simple production procedures.

Active Publication Date: 2013-03-13
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the deburring process needs to be processed in two strokes. Generally, the shrinking die operation is performed first and then the expanding die operation is performed. Since the two processes cannot be carried out at the same time, the copper tube nozzle after deburring is slightly flanged (turned inside or outside) ), not meeting the requirements of process technology
And, the above-mentioned method operation is complicated, and production efficiency is lower

Method used

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] figure 1 A schematic cross-sectional view of an embodiment of a punch according to the invention is shown. Such as figure 1 As shown, it can be seen from the figure that the punch of this embodiment includes: a flared core 10 and a shrinking jacket 30 . The first end of the flared core 10 is the flared end 11, and the second end of the flared core 10 is the connection end; One end is a constricted end 31 , and there is a gap between the constricted end 31 and the flared end 11 .

[0021] The punch of this embodiment is especially used for the deburring process of copper pipes. Applying the punch of this embodiment, the idea of ​​internal expansion and external contraction is adopted,...

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Abstract

The invention provides a punching head, which comprises an expanding mold core (10) and a reducing jacket (30), wherein the first end of the expanding mold core (10) is an expanding end (11) and the second end of the expanding mold core (10) is a connecting end; and the expanding mold core (10) is installed in the inner hole of the reducing jacket (30), the first end of the reducing jacket (30) is a reducing end (31), and a gap is kept between the reducing end (31) and the expanding end (11). The punching head has the advantages of high production accuracy, simple production process and high efficiency.

Description

technical field [0001] The invention relates to the field of pipe end forming processing dies, in particular to a punch. Background technique [0002] The nozzle quality of copper pipe deburring has always been a bottleneck in the pipe end forming process. The quality of processing directly affects the efficiency of inner piping and upper quick connectors, and even causes the shutdown of final assembly and helium inspection. Since the current pipe end forming dies only have two kinds of common flaring dies and shrinking dies, and there is no special deburring punch, it is generally selected according to the existing flanging dies when removing internal burrs, and shrinking dies are used when removing external burrs. Die. [0003] In order to ensure the quality requirements of helium inspection and final assembly of quick connectors and internal piping, it is often necessary to deal with internal burrs and external flanging problems at the same time to ensure the size requir...

Claims

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Application Information

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IPC IPC(8): B21D37/00B21D41/00
Inventor 曾霄林祥龙王仁聪
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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