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Square and rectangular tube pre-welding machine of jco unit

A square and rectangular tube, pre-welding machine technology, applied in welding equipment, tubular objects, welding equipment and other directions, can solve the problems of inability to meet production needs and small application range.

Active Publication Date: 2017-11-07
TAIYUAN HEAVY MACHINERY GRP ENG TECH R & D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the existing pre-welding machine, the existing JCO unit can only produce round pipes, and its application range is small, which cannot meet the production needs of straight seam submerged arc welding of square and rectangular pipes, for example.

Method used

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  • Square and rectangular tube pre-welding machine of jco unit
  • Square and rectangular tube pre-welding machine of jco unit
  • Square and rectangular tube pre-welding machine of jco unit

Examples

Experimental program
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Effect test

Embodiment approach 1

[0032] refer to figure 1 , in this embodiment, figure 1 A schematic diagram of the three-dimensional structure of the square and rectangular tube pre-welding machine (hereinafter referred to as the pre-welding machine) of the JCO unit embodying the principle of the present invention is representatively shown in . In this exemplary embodiment, the square and rectangular tube pre-welding machine of the JCO unit proposed by the present invention is taken as the pre-welding equipment in the JCO unit as an example. Further, the square rectangular tube pre-welding machine of the JCO unit proposed by the present invention is an example of a unit of a straight seam submerged arc welded pipe extruded from a tube blank in the order of J type→C type→O type. The structural composition and functions of each part of the rectangular tube pre-welding machine will be described. Those skilled in the art can easily understand that in order to realize the above functions, various modifications,...

Embodiment approach 2

[0054] refer to Figure 7 , Figure 7 Figure 1 shows a representative cross-sectional view of another exemplary embodiment of the square and rectangular tube pre-welding machine of the JCO unit of the present invention, which specifically shows that in this exemplary embodiment, the joint frame 24 of the pre-welder and the seam joint mechanism Structure. Hereinafter, another exemplary embodiment of the square and rectangular tube pre-welding machine of the JCO unit of the present invention will be further described in conjunction with the above-mentioned drawings.

[0055] In this embodiment, the structure and working mode of the pre-welding machine are roughly the same as the above-mentioned embodiment, but the difference is:

[0056] Such as Figure 7 As shown, in this embodiment, the stitching mechanism of the pre-welding machine further includes a third top stitching roller 45 , which is arranged in parallel on the outside of the second top stitching roller 44 . One of...

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Abstract

The invention provides a square and rectangular tube pre-welding machine of a JCO unit.The pre-welding machine comprises a rack, a supporting and conveying mechanism, a joint closing mechanism, a joint pressing mechanism and a pre-welding mechanism; the rack is sequentially provided with a joint closing frame, a joint pressing frame and a pre-welding frame in a first direction; the supporting and conveying mechanism is arranged in the rack in a penetrating mode so as to support and convey tube blanks; the joint closing mechanism is arranged in the joint closing frame and located above the supporting and conveying mechanism so as to conduct joint closing on the tube blanks; the joint pressing mechanism is arranged in the joint pressing frame and located above the supporting and conveying mechanism so as to conduct joint pressing on the tube blanks obtained after joint closing; the pre-welding mechanism is arranged in the pre-welding frame and located above the supporting and conveying mechanism so as to pre-weld the tube blanks obtained after joint pressing into square and rectangular tubes.According to the square and rectangular tube pre-welding machine of the JCO unit, segmented functional areas are arranged, and therefore the pre-welding process requirements of the square and rectangular tubes can be met.

Description

technical field [0001] The invention relates to the technical field of steel rolling equipment, in particular to a square and rectangular tube pre-welding machine of the JCO unit in the longitudinal submerged arc welded pipe production equipment. Background technique [0002] JCO unit is one of the forming methods of longitudinal welded pipe, and also one of the production units. The existing JCO unit is to extrude the tube blank after milling and pre-bending according to the sequence of J-type → C-type → O-type, so it can be obtained in the production of large-diameter, high-grade, and large-thickness steel pipes. widely used. [0003] The existing JCO units mainly form and weld the tube blanks into steel pipes through four processes: pre-bending, forming, pre-welding, and internal and external welding. Among them, the pre-welding process is an indispensable process in the production process of the JCO unit. Its function is to weld the formed open tube blank mother tube t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/00
CPCB23K31/02B23K37/00B23K2101/06B23P15/00B23P23/00
Inventor 郑国强
Owner TAIYUAN HEAVY MACHINERY GRP ENG TECH R & D CO LTD
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