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A copper pipe internal thread forming device

A technology of forming device and internal thread, applied in the field of copper pipe internal thread forming device, can solve problems such as uneven friction force, accelerated wear of thread core head, etc., and achieve the effects of stable friction force, reducing friction resistance and improving service life

Active Publication Date: 2018-03-27
ZHEJIANG NAILE COPPER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the copper tube passes through the core, most of the lubricating oil on the inner wall of the copper tube is scraped off by the core, resulting in uneven friction between the threaded core and the inner wall of the copper tube, which accelerates the wear of the threaded core

Method used

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  • A copper pipe internal thread forming device
  • A copper pipe internal thread forming device
  • A copper pipe internal thread forming device

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Experimental program
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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0022] Such as figure 1 A brass tube internal thread forming device shown in , from right to left, sequentially includes a reducing outer mold 1, a spinning mechanism 2, and a traction mechanism, and the copper tube 3 passes through the reducing outer mold 1, spinning mechanism 2 and The traction mechanism is connected, and a connecting rod 4 is arranged in the copper tube. The right end of the connecting rod 4 is provided with a swimming core 5 corresponding to the reducing outer mold, and the left end of the connecting rod is provided with a threaded core head 6 corresponding to the spinning mechanism. 4Through the threaded connection between the core and the core, the connecting rod is located at the left end of the core and is provided with a locking bolt 7. Sleeve 8, the left end that is positioned at thread core head on the connecting rod is p...

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PUM

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Abstract

The invention relates to the technical field of pipe internal thread machining, and discloses a copper tube internal thread forming device. The copper tube internal thread forming device comprises a reducing outer mold, a spinning mechanism and a traction mechanism. A copper tube sequentially penetrates through the reducing outer mold and the spinning mechanism to be connected with the traction mechanism. A connecting rod is arranged in the copper tube, a free core is arranged at the position, corresponding to the reducing outer mold, of one end of the connecting rod, and a threaded core head is arranged at the position, corresponding to the spinning mechanism, of the other end of the connecting rod. The free core is coaxially and fixedly connected with the connecting rod. The threaded core head and the connecting rod are rotationally connected, and a connecting ring is arranged at the end, towards the free core, of the threaded core head. A plurality of rotary shafts parallel to the axis of the connecting rod are arranged at the outer end of the connecting ring, a base wheel is arranged on the outer side of each rotary shaft, a sponge sleeve is arranged on the outer side of each base wheel, and the side faces of the sponge sleeves are in contact with the inner wall of the copper tube. According to the device, it can be ensured that lubricating oil on the contact face of the inner wall of the copper tube and the threaded core head is evenly distributed, abrasion of the threaded core head can be relieved, and therefore the service life of the threaded core is prolonged.

Description

technical field [0001] The invention relates to the technical field of pipe internal thread processing, in particular to a copper pipe internal thread forming device. Background technique [0002] Seamless internally threaded copper tubes are widely used in the field of refrigeration. Seamless internally threaded copper tubes can be made into air-conditioning condensers, radiators, etc. The thread structure on the inner surface of the copper tube significantly increases the heat exchange surface area of ​​the inner wall of the copper tube, improving heat exchange efficiency. The internal thread processing in the seamless internal thread copper pipe is usually processed by the combination of external mold and internal mold. The external mold usually adopts a spinning mechanism. The spinning mechanism usually includes a holder and a number of steel balls. The copper tube is surrounded by steel balls Pass through the formed inner hole, the holder squeezes the steel ball, the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/20
CPCB21C37/207
Inventor 罗奇梁刘晋龙
Owner ZHEJIANG NAILE COPPER