Vehicle sharp-corner square-pipe production line

Abstract

The invention discloses a vehicle sharp-corner square-pipe production line. The production line comprises a feeding machine (1), a preliminary forming roller unit (2), welding equipment (3), water cooling equipment (4), a heater (5), a thermal forming roller unit (6), a reshaping roller unit (7) and a straightening mechanism (8). According to the production line, the characteristics of the cold rolling technology are fully exerted, meanwhile, the thermal forming and welding technologies are creatively applied to the cold rolling production line, the problems about quick forming of sharp-cornersquare-pipe type parts are solved, and the production line has the characteristics of high forming speed, high quality, low cost and capability of saving raw materials.

Description

technical field

[0001] The invention relates to a cold-rolling technology, in particular to a technology for preparing sharp-angle profiles without arc transitions by combining cold-rolling welding and hot-rolling, in particular, a production line for sharp-angled square tubes for vehicles. Background technique

[0002] At present, in some large electromechanical products, such as figure 1 The square beam for high-speed rail vehicles shown is not only long in length, generally more than 10 meters, but also requires all four corners to be sharp (right angles), and should not drive arc transitions, and its thickness should not exceed 10 mm. If the profile of this special structure is formed by hot rolling, its thickness is not suitable for hot rolling forming, and mechanical removal after hot rolling will have a long preparation cycle, serious material waste, high cost, and hot rolling forming cannot be processed There are sharp corners or sharp corner structures, so the hot ...

Examples

Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Such as Figure 1-6 shown.

[0033] A sort of figure 1 In the square tube-shaped vehicle sharp-angled square tube production line shown, its four corners are right angles, and can also be sharp angles less than 90 degrees. Taking the right angle as an example, the production line of the present invention includes the following equipment:

[0034] A feeding machine 1, which will place the cut steel strip coil on the starting end of the cold rolling production line, which is exactly the same as the feeding machine of the existing cold extrusion production line;

[0035] A preliminary forming roll unit 2, which is used to gradually roll the flat steel strip into a square tube shape, and the seam of the square tube is located at the uppermost center position; the structure of the preliminary forming roll unit is as follows image 3 As shown, the p...

technical field

[0001] The invention relates to a cold-rolling technology, in particular to a technology for preparing sharp-angle profiles without arc transitions by combining cold-rolling welding and hot-rolling, in particular, a production line for sharp-angled square tubes for vehicles. Background technique

[0002] At present, in some large electromechanical products, such as figure 1 The square beam for high-speed rail vehicles shown is not only long in length, generally more than 10 meters, but also requires all four corners to be sharp (right angles), and should not drive arc transitions, and its thickness should not exceed 10 mm. If the profile of this special structure is formed by hot rolling, its thickness is not suitable for hot rolling forming, and mechanical removal after hot rolling will have a long preparation cycle, serious material waste, high cost, and hot rolling forming cannot be processed There are sharp corners or sharp corner structures, so the hot ...

Examples

Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Such as Figure 1-6 shown.

[0033] A sort of figure 1 In the square tube-shaped vehicle sharp-angled square tube production line shown, its four corners are right angles, and can also be sharp angles less than 90 degrees. Taking the right angle as an example, the production line of the present invention includes the following equipment:

[0034] A feeding machine 1, which will place the cut steel strip coil on the starting end of the cold rolling production line, which is exactly the same as the feeding machine of the existing cold extrusion production line;

[0035] A preliminary forming roll unit 2, which is used to gradually roll the flat steel strip into a square tube shape, and the seam of the square tube is located at the uppermost center position; the structure of the preliminary forming roll unit is as follows image 3 As shown, the p...

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