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Decompression device and decompression method used for tube drawing

A decompression device and pipe fitting technology, which is applied in the field of pipe drawing and plastic forming, can solve the problems of pipe fitting wrinkling, weld cracking, uneven thickness, etc., and achieve the effects of avoiding wrinkles, prolonging service life, and low manufacturing cost

Active Publication Date: 2018-09-18
SHANDONG XINHEYUAN HEAT TRANSFERRING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical task of the present invention is to address the above deficiencies and provide a decompression device and decompression method for pipe fittings to solve the problem of how to apply a pulling force to the pipe fittings that is opposite to the direction of travel of the pipe fittings to avoid pulling out Problems such as wrinkles, weld cracks and uneven thickness of pipe fittings during plastic forming

Method used

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  • Decompression device and decompression method used for tube drawing
  • Decompression device and decompression method used for tube drawing

Examples

Experimental program
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Effect test

Embodiment 1

[0036] as attached figure 1 And attached figure 2 As shown, a decompression device for pipe fittings drawing includes a locking device and a reverse force application device. The locking device includes a drive screw 1 and a locking assembly, and the locking assembly is assembled on a pipe fitting 5 with a built-in inner core. and firmly cooperate with the pipe fitting 5, and the locking assembly is fixedly matched with the pipe fitting 5 and the inner core, the transmission screw 1 is connected with the locking assembly, and the central axis of the transmission screw 1 is set coaxially with the central axis of the pipe fitting 5; reverse force The device includes a reverse drive device and a decompression screw, the axis of the decompression screw is arranged side by side with the axis of the transmission screw 1 up and down, the decompression screw and the transmission screw 1 are connected by thread engagement, and the reverse drive device is connected with the decompressi...

Embodiment 2

[0049] A decompression method for drawing pipe fittings. A decompression device for drawing pipe fittings disclosed in Embodiment 1 is assembled on the end of a pipe fitting 5 with a built-in inner core. The decompression device slows down the traveling speed of the pipe fitting 5 so as to provide the pipe fitting 5 with a reverse pulling force with a decompression effect.

[0050] Specifically, the decompression device is assembled on the tail end of the pipe fitting 5, and the decompression screw is rotated at a speed lower than the advancing speed of the pipe fitting 5 by adjusting the reverse drive device, and the decompression screw hinders the pipe fitting 5 through the transmission screw 1. The progress of the pipe is equivalent to applying a pulling force to the pipe 5 opposite to the direction of travel of the pipe 5 .

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Abstract

The invention discloses a decompression device and a decompression method used for tube drawing, belongs to the field of tube pulling and plastic forming, and solves the technical problems about how to avoid buckling, welding seam cracking, uneven thickness and the like of tubes in drawing and plastic forming. The decompression device is characterized by structurally comprising a locking device and a reverse force applying device, wherein the locking device comprises a transmission screw and a locking assembly; the locking assembly can be assembled on a tube with an inner core therein and is firmly matched on the tube; the transmission screw is connected with the locking assembly; the reverse force applying device comprises a reverse drive device and a decompression screw; the decompression screw is in transmission connection with the transmission screw through a threaded engaged way; the reverse drive device is connected with the decompression screw; and the reverse drive device, thedecompression screw and the transmission screw can be matched for blocking advance of the tube through the locking assembly. The decompression device can provide reverse pulling force for the tube toblock the tube from transmitting in the advance direction.

Description

technical field [0001] The invention relates to the field of drawing and plastic forming of pipe fittings, in particular to a decompression device and a decompression method for drawing pipe fittings. Background technique [0002] Drawing is a plastic forming processing method that uses external force to act on the front end of the drawn metal to pull the metal blank from a die hole smaller than the section of the blank to obtain a product of corresponding shape and size. [0003] During the process of reducing the diameter of the pipe fittings through the drawing process, the following problems may occur under the influence of the pipe fittings: wrinkles appear on the pipe wall of the pipe fittings, the weld seam cracks and cause the blasting force to drop, the inner and outer surfaces of the pipe fittings are rough, and metal shavings from the pipe fittings Falling off in the weld seam, continuous plastic deformation at the exit of the mold during the stretching process, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C1/24B21C1/28B21C1/30
CPCB21C1/24B21C1/28B21C1/30
Inventor 张洪延张志强
Owner SHANDONG XINHEYUAN HEAT TRANSFERRING TECH
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