Shaping die for square pipe

A mold and square technology, which is applied in the field of square tube shaping molds, can solve the problems of not being able to meet the matching accuracy requirements of square tubes, affecting the appearance and overall structural strength, and low dimensional accuracy of square tubes, so as to avoid plastic shaping effects, small dimensional tolerances, The effect of easy detachment from the core rod

Active Publication Date: 2015-11-25
松渤电器(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The square tube processed by this forming method has the advantages of convenient processing, low cost, and good surface quality. The problem is that the size tolerance is large, and the presence of weld seams at the welding place affects the appearance and overall structural strength.
However, this molding method uses a multi-component mold, which is installed in the mold box according to the needs. There is inevitably a positional deviation between the multi-component molds, resulting in a low dimensional accuracy of the square tube obtained by multiple extrusions. , unable to meet the matching accuracy requirements of the square tube when it is applied to the movable connection structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The square tube shaping mold is used for shaping the square tube on the market or the square tube after bending and welding to reduce the dimensional tolerance of the square tube. When in use, the shaping mold is installed on the press. The square tube shaping mold includes a punch mounting plate 1, a die mounting plate 2, a core rod 3, a support frame 4, a mounting platen 5, a shaping shell 6, a square relief through hole 61, a mounting groove 62, and a shaping block 7 , Roller 8, binder wedge 9, fixed block 10 and elastic member 11.

[0037] Specifically, as figure 1 and Figure 4 As shown, the punch mounting plate 1 and the die mounting plate 2 are arranged up and down, the punch mounting plate 1 is located above the die mounting plate 2, and the punch mounting plate 1 can be connected with the slide block of the press. The cross section of the core rod 3 is square, and the positioning block 16 is fixed on the punch mounting plate 1 , and the core rod 3 is fixed on...

Embodiment 2

[0047] The technical solution in this embodiment is basically the same as that in the first embodiment, except that in this embodiment, the core rod 3 is not sleeved with an extension sleeve 17 . When the press drives the core rod 3 to exit, the square tube 18 is subjected to the pressing force of the pressing wedge 9, and the square tube 18 is applied to the square tube 18 by hand or other auxiliary equipment on the surface of the square tube 18. The pressing force and the action The force makes the square tube 18 separate from the core rod 3 to realize the blanking of the square tube 18.

Embodiment 3

[0049] The technical solution in this embodiment is basically the same as the technical solution in the first embodiment, except that in this embodiment, the elastic member 11 is a compression spring.

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PUM

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Abstract

The invention provides a shaping die for a square pipe and belongs to the technical field of dies. By the adoption of the shaping die for the square pipe, the problem that the dimensional precision of an existing square pipe is low is solved. A core bar is fixed to a female die installation plate of the shaping die for the square pipe. A supporting frame is arranged on the male die installation plate. An installation platen is fixed to the supporting frame. A shaping shell is fixed to the installation platen. A square receding through hole is formed in the shaping shell. The core bar can be inserted into the square receding through hole. Installation grooves communicated with the square receding through hole are formed in the shaping shell and located in the four circumferential inner walls of the square receding through hole respectively. A shaping block is arranged in each installation groove. A plurality of pin rollers which are perpendicular to the core bar are arranged in each shaping block in the insertion direction of the core bar. Four pressing wedge blocks are further arranged between the installation platen and the shaping shell. One end of each pressing wedge block is in a V shape and located at one corner of the square receding through hole. By rolling the inner surface and the outer surface of the square pipe repeatedly, the dimensional tolerance of the square pipe is made smaller, and the surface thickness of the square pipe is made more uniform.

Description

technical field [0001] The invention belongs to the technical field of moulds, and relates to a square tube shaping mold. Background technique [0002] The square tube is a square profile, and the square tube is usually made of metal materials, and the square tube made of steel is the most common. The common forming method of the square tube is to flatten the steel strip and bend it into the required shape, and then weld the seams to obtain the required shape of the square tube. The square tube processed by this forming method has the advantages of convenient processing, low cost, and good surface quality. The problem is that the size tolerance is large, and the presence of weld seams at the welding place affects the appearance and overall structural strength. [0003] In order to realize the integral forming of the square tube and improve the mechanical properties of the square tube, some people also use cold extrusion to process the square tube. For example, Chinese pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D3/05
Inventor 金龙建
Owner 松渤电器(上海)有限公司
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