Straight seam welding special-shaped steel pipe forming process and mold changing apparatus for automobile anti-collision beam

A special-shaped steel pipe and straight seam welding technology, which is applied in the field of steel pipe forming, can solve problems that do not meet the market demand development trend, troublesome mold replacement, complicated production process, etc., and achieve improved mold replacement efficiency, good product surface quality, and uniform molding process Effect

CN108673058AActive Publication Date: 2018-10-19山东华舜重工集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-10-19

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Abstract

The invention relates to a straight seam welding special-shaped steel pipe forming process for an automobile anti-collision beam. The straight seam welding special-shaped steel pipe forming process for the automobile anti-collision beam comprises the following steps of: (1) uncoiling, unrolling a steel strip coil; (2) flattening, flattening the unrolled steel strip and conveying the flattened steel strip to the next station; (3) flat cutting and butt welding, flat cutting a head portion and a tail portion of the flattened steel strip respectively, and butt welding a tail of the steel strip material after the flat cutting with a head of the next steel strip material after the flat cutting; (4) pre-storing, feeding the butt welded steel strip into a movable sleeve storage bin; (5) forming, conveying the steel strip in the movable sleeve storage bin to a forming machine, and gradually bending into a tube blank to be welded according to a certain sequence; (6) high-frequency welding, pressing the opposite ends of the tube blank to form a certain opening angle, and then to perform high-frequency welding; (7) Water cooling, cooling the high-frequency welded steel tube to room temperatureby spraying; (8) special-shaped gradient sizing, sizing the water-cooled steel tube by a sizing ; (9) profile machining, cutting the sized steel tube into specific lengths.
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Description

technical field

[0001] The invention relates to the technical field of steel pipe forming, in particular to a forming process of straight seam welded special-shaped steel pipes for automobile anti-collision beams and a mold replacement device. Background technique

[0002] Straight seam steel pipe is mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction, etc. It can be used for liquid transportation, such as water supply and drainage, and can also be used for gas transportation, such as gas, steam, liquefied petroleum It can also be used as a structure, as a piling pipe, as a bridge, and as a pipe for docks, roads, and building structures. In recent years, straight seam welded pipes have also been widely used in the field of automobiles and furniture and home decoration. The straight seam welded special-shaped steel pipes have been widely used in automobile girders, automobile ...

Examples

Embodiment 1

[0041] A forming process of straight seam welding special-shaped steel pipes for automobile anti-collision beams, the details are as follows:

[0042] Uncoiling, install the steel strip coil on the uncoiler, and the uncoiler drives the steel strip coil to rotate and cooperate with the blade to disassemble the steel coil. The center of the steel strip coil is located on the center line of the unit, and a micro-braking device is installed on the uncoiler to prevent the steel strip from being rolled back into an elastic loose coil during an emergency stop.

[0043] Leveling, straight pinch leveling machine middle pressure roller and shovel cooperate with uncoiler to disassemble the steel strip head, and send the steel strip to straight pinch leveler. The shovel cooperates with the straight head pressure roller to straighten the head of the steel strip, and then sends the steel strip to the pinch roller. The pinch roller presses down to clamp the steel strip, and turns the main moto...

Embodiment 2

[0062] The difference between this embodiment and Embodiment 1 is that the elastic blocking reset device 5 includes a cross bar perpendicular to the piston rod of the two-way hydraulic cylinder and fixedly connected to the support beam, and a stopper 7 sleeved on the cross bar. Both sides of the block are respectively provided with springs 11 connected to the support beam. The two springs are arranged in a figure-eight shape, and the connection point between the spring and the block is higher than the axis of the cross bar. The lower edges on both sides are provided with circular arc chamfers, the distance from the axis of the cross bar to the front and rear sides of the boss lower part of the block is less than the distance to the upper surface of the support beam, and the front and rear edges of the lower end of the electromagnet are also provided with circular arc chamfers.

[0063] When the electromagnet does not touch the block, the springs on both sides keep it in a balan...