Bending device for welded steel pipes
A technology for bending devices and welded steel pipes, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve problems affecting the quality of welded steel pipes and welding stability, and achieve the effect of overcoming welding instability
Pending Publication Date: 2019-08-06
ZHANGJIAGANG HUACHENG LOCOMOTIVE PRECISION PIPE MFG +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, since the steel strip has a rebound force when it is bent, the thicker the steel strip, the greater the rebound force, and the larger rebound force generated by direct bending greatly affects the stability of the welding and affects the subsequent welding. Quality of steel pipe
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0022] see Figure 1-2 As shown, a bending device for welding steel pipes is used for bending and closing a steel strip 100 into shape. A group of bending assemblies 2 and multiple groups of closing assemblies 3, the bending assembly 2 includes an upper die 2a and a lower die 2b respectively arranged on both sides of the steel strip 100 in the vertical direction, and the mold surfaces of the upper die 2a and the lower die 2b are W type, the upper mold 2a and the lower mold 2b can cooperate to bend the steel strip 100 into a W shape; the closing assembly 3 includes two pressure rollers 3a that are respectively rotatable and located on both sides of the steel strip 100 perpendicular to its feeding direction, and the pressure rollers The rotation axis of 3a extends along the horizontal or vertical direction and is perpendicular to the feeding di...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| dew point | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a bending device for welded steel pipes; and the bending device is used for bending and closed molding of steel strips. The bending device comprises a frame, at least one set of bending modules arranged in a direction from one end to the other end of the frame in sequence, and multiple sets of closing modules; the bending modules comprise upper molds and lower molds arranged on two sides of the vertical directions of the steel strips; mold surfaces of the upper molds and the lower molds are W-shaped; and the upper molds and the lower molds can be matched to bend the steel strips in a W form. Through arrangement of the bending modules and the closing modules, the bending device for the welded steel pipes can mold the steel strips after bending in the W form to realize two straight longitudinal edges and no transverse height difference after bending of the steel strips, so that the welding stability is achieved, and the problem of instable welding caused by higherrebound force of the steel strips due to C-shaped bending in the prior art is overcome.
Description
technical field [0001] The invention relates to the field of manufacturing welded steel pipes, in particular to a bending device for welded steel pipes. Background technique [0002] Welded steel pipe refers to a steel pipe with seams on the surface that is welded after bending and deforming a steel strip or steel plate into a circular, square or other shape. In the prior art, the steel strip is usually directly bent gradually into a C-shaped closed pipe, followed by welding. However, since the steel strip has a rebound force when it is bent, the thicker the steel strip, the greater the rebound force, and the larger rebound force generated by direct bending greatly affects the stability of the welding and affects the subsequent welding. The quality of steel pipe. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a bending device for welding steel pipes. The bending device can well overcome...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/14B21D37/18B21C37/08
CPCB21D5/14B21D37/18B21C37/08
Inventor 韩波周金苗
Owner ZHANGJIAGANG HUACHENG LOCOMOTIVE PRECISION PIPE MFG