Welding deformation control device for steel-aluminum composite structural member

Abstract

The invention provides a steel-aluminum composite structural part welding deformation control device which comprises a base, a fixing mechanism and a cooling mechanism, a connecting block is fixedly connected to the middle of the outer wall of the rear end of the base, and supporting frames are fixedly connected to the two sides of the upper end of the base. A fixing mechanism is arranged in the base and comprises a bidirectional threaded rod and two lifting threaded rods, and sliding grooves are formed in the two sides of the outer wall of the front end and the two sides of the outer wall of the rear end of the base correspondingly. According to the welding deformation control device for the steel-aluminum composite structural part, a two-way threaded rod drives a moving block, a limiting plate is used for limiting, a lifting threaded rod is matched to drive a lifting block, a pressing plate is used for downward pressing, fixing is convenient, a conveying pump can convey cooling liquid in a liquid storage tank into a first cooling pipe and a second cooling pipe, and the cooling liquid can be conveyed into the first cooling pipe and the second cooling pipe. And the lifting block is matched to drive the pressing plate to press downwards, so that arching deformation is reduced, and the deformation prevention capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding deformation control devices, and in particular to a welding deformation control device for a steel-aluminum composite structural part. Background Art

[0002] Steel has good tensile strength and hardness, while aluminum has good impact resistance and toughness. The advantages of steel and aluminum can be fully utilized by combining the two through a specific process to form a steel-aluminum composite structural part. The welding deformation control device for steel-aluminum composite structural parts is a device used to control and reduce the deformation generated when welding steel-aluminum composite structural parts. It helps to improve the accuracy and quality of welding by controlling and reducing deformation.

[0003] However, most of the existing welding deformation control devices for steel-aluminum composite structures on the market are not convenient for helping workers to fix steel-aluminum composite structures of different sizes during welding, which reduces the applicability of the device. In addition, most of the existing welding deformation control devices for steel-aluminum composite structures on the market only control and reduce the arch deformation during welding by squeezing the steel-aluminum composite structures through support plates. There is still the problem of expansion deformation due to excessive heat in the non-welding area, and the deformation control effect is limited. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a welding deformation control device for steel-aluminum composite structural parts, which solves the problem that the existing welding deformation control device for steel-aluminum composite structural parts is not convenient for workers to fix steel-aluminum composite structural parts of different sizes, and solves the problem that the existing welding deformation control device for steel-aluminum composite structural parts has excessive heat in the non-welding area during welding, resulting in expansion and deformation.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a welding deformation control device for a steel-aluminum composite structural part, comprising a base, a fixing mechanism and a cooling mechanism, a connecting block is fixedly connected to the middle of the rear end outer wall of the base, both sides of the upper end of the base are fixedly connected to a support frame, a fixing mechanism is arranged inside the base, the fixing mechanism comprises a bidirectional threaded rod and two lifting threaded rods, both sides of the front end and the rear end outer wall of the base are provided with sliding grooves, both sides of the bidirectional threaded rod penetrate the base and are fixedly connected to a first turntable, both sides of the outer wall of the bidirectional threaded rod are threadedly connected to a moving block, the upper end of the moving block is fixedly connected to a limiting plate, the front end and the rear end outer wall of the support frame are provided with a lifting groove on one side close to the center of the base, the outer wall of the lifting threaded rod is threadedly connected to the lifting block, the lower end of the lifting block is fixedly connected to a pressing plate, the rear end of the base is provided with a cooling mechanism, the cooling mechanism comprises two first cooling pipes and two second cooling pipes, and the upper end of the connecting block is provided with a delivery pump;

[0008] Through the above technical scheme, the bidirectional threaded rod in the fixing mechanism drives the moving block threadedly connected to the bidirectional threaded rod to move inside the slide groove, and the limiting plate fixedly connected to the moving block is used to limit the movement of the steel-aluminum composite structural part. The lifting threaded rod cooperates to drive the lifting block threadedly connected to the lifting threaded rod to move inside the lifting groove, and the steel-aluminum structural part is pressed onto the base by the pressure plate fixedly connected to the lower end of the lifting block, thereby facilitating the fixation of steel-aluminum composite structural parts of different sizes.

[0009] Preferably, two fixing blocks are fixedly connected to the middle of the upper end of the base, the outer walls on both sides of the connecting blocks are fixedly connected to the liquid storage tank, the water inlet and the water outlet of the delivery pump are fixedly connected to the straight pipe, the upper end of the liquid storage tank is connected through the first connecting pipe, the rear end of the second cooling pipe is connected through the second connecting pipe on one side close to the center of the base, and the rear end of the first cooling pipe is connected through the third connecting pipe on one side away from the center of the base;

[0010] Through the above technical scheme, the first connecting pipe, the second connecting pipe, the third connecting pipe, the first cooling pipe and the second cooling pipe in the cooling mechanism are interconnected, and the coolant stored in the liquid storage tank is transported to the first cooling pipe and the second cooling pipe by a delivery pump to cool the vicinity of the welding seam of the steel-aluminum composite structural member to prevent the non-welding portion from absorbing too much heat and expanding. The lifting block moves downward and the pressure plate is used to press down to reduce the arching deformation of the structural member. The two methods cooperate with each other to enhance the anti-deformation capability.

[0011] Preferably, the middle part of the outer wall of the bidirectional threaded rod is rotatably connected to the base, and the moving blocks all slide inside the slide groove;

[0012] Through the above technical solution, by rotating the first turntable, the bidirectional threaded rod is moved and the moving block threadedly connected to it moves in the slide groove, thereby facilitating changing the distance between the limiting plate fixedly connected to the moving block according to the size of the steel-aluminum composite structural part, thereby better limiting the displacement of the steel-aluminum composite structural part.

[0013] Preferably, the front and rear ends of the inner walls on both sides of the slide groove are fixedly connected with guide rods, and the outer walls of the guide rod bodies are slidably connected with the moving blocks;

[0014] Through the above technical solution, the guide rod fixedly connected inside the slide groove is slidably connected to the moving block, which can prevent the moving block from tilting when driven by the bidirectional threaded rod, thereby improving the smoothness of the moving block during movement.

[0015] Preferably, the upper ends of the lifting threaded rods all pass through the support frame and are fixedly connected to the second turntable, and the lifting blocks all slide inside the lifting slots;

[0016] Through the above technical solution, by rotating the second turntable, the lifting threaded rod drives the lifting block threadedly connected to it to move up and down inside the lifting slot, thereby driving the pressure plate fixedly connected to the lifting block to move up and down.

[0017] Preferably, the base and the upper end of the fixing block are both provided with a steel-aluminum composite structural body, and the side of the straight-through pipe away from the center of the connecting block is connected to the liquid storage tank;

[0018] Through the above technical scheme, the steel-aluminum composite structural part body is placed on the base and the fixed block, and can be pressed down by a pressure plate, and clamped with a limiting plate to limit the movement of the steel-aluminum composite structural part, which also helps to reduce the arch deformation phenomenon during welding.

[0019] Preferably, the upper ends of the first connecting pipes are connected to the second cooling pipes, and the lower ends of the second connecting pipes are connected to the first cooling pipes;

[0020] Through the above technical solution, the two first cooling pipes and the two second cooling pipes are connected through the first connecting pipe, the second connecting pipe and the third connecting pipe, and the delivery pump and the liquid storage tank are connected by a straight pipe, so that the coolant can circulate.

[0021] Preferably, the first cooling pipe is arranged inside the fixed block, and the second cooling pipe is arranged inside the pressing plate;

[0022] Through the above technical solution, coolant flows through the first cooling tube and the second cooling tube arranged inside the pressure plate and the fixed block, and the pressure plate and the fixed block sandwich the steel-aluminum composite structural member body in the middle and are in direct contact. The coolant can be used to take away excess heat and prevent overheating and expansion of non-welded parts.

[0023] Preferably, the method for using the welding deformation control device for steel-aluminum composite structural parts comprises the following steps:

[0024] S1: First, place the steel-aluminum composite structure on the upper surface of the base, between the two limiting plates, then rotate the first turntable to drive the bidirectional threaded rod fixedly connected to the first turntable to rotate in the base, so that the moving block threadedly connected to the bidirectional threaded rod moves along the guide rod inside the slide groove, and moves with the limiting plates towards each other. The moving distance is adjusted according to the specific size, and the steel-aluminum composite structure body is clamped to prevent displacement;

[0025] S2: Secondly, the two second turntables are rotated to drive the lifting threaded rod fixed at the lower end to rotate inside the lifting slot, so that the lifting block threadably connected to the lifting threaded rod moves downward along the lifting slot, and then the pressing plate fixedly connected to the lower end of the lifting block is used to press the steel-aluminum composite structural part body onto the base, and at the same time, the steel-aluminum composite structural part is prevented from arching during subsequent welding;

[0026] S3: Finally, the first cooling pipe, the second cooling pipe, the first connecting pipe, the second connecting pipe and the third connecting pipe are connected to each other to form a flow channel for the coolant, and the pressure plate and the fixing block are in contact with the steel-aluminum composite structural member body. Then, when the steel-aluminum composite structural member is welded with a welding gun, the delivery pump is started through an external controller, and the flowing coolant takes away excess heat to prevent thermal expansion.

[0027] (III) Beneficial effects

[0028] The present invention provides a device for controlling welding deformation of a steel-aluminum composite structural member. It has the following beneficial effects:

[0029] 1. The present invention provides a welding deformation control device for steel-aluminum composite structural parts, which drives a moving block threadedly connected to the two-way threaded rod to move inside a slide groove through a bidirectional threaded rod in a fixing mechanism, and limits the movement of the steel-aluminum composite structural part by a limiting plate fixedly connected to the moving block, and cooperates with a lifting threaded rod to drive a lifting block threadedly connected to the lifting threaded rod to move inside a lifting groove, and uses a pressing plate fixedly connected to the lower end of the lifting block to press the steel-aluminum composite structural part onto a base, thereby facilitating workers to fix steel-aluminum composite structural parts of different sizes, thereby improving the applicability of the device.

[0030] 2. The present invention provides a welding deformation control device for a steel-aluminum composite structural part. The first connecting pipe, the second connecting pipe, the third connecting pipe, the first cooling pipe and the second cooling pipe in the cooling mechanism are interconnected. The coolant stored in the liquid storage tank is transported to the first cooling pipe and the second cooling pipe by a delivery pump to cool the vicinity of the welding seam of the steel-aluminum composite structural part to prevent thermal expansion. The lifting block moves downward and the pressure plate is used to press down to reduce the arching deformation of the structural part. The two methods cooperate with each other to improve the anti-deformation ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 2 It is an overall exploded view of the present invention;

[0033] Figure 3 It is an axial cross-sectional view of the base, support frame, moving block, limiting block, fixed block and pressing plate of the present invention;

[0034] Figure 4 An exploded view of a partial mechanism of the present invention;

[0035] Figure 5 It is an axial cross-sectional view of the base of the present invention.

[0036] Among them, 1. base; 2. connecting block; 3. steel-aluminum composite structural body; 4. support frame; 5. fixing mechanism; 501. slide groove; 502. bidirectional threaded rod; 503. first turntable; 504. moving block; 505. limiting plate; 506. guide rod; 507. lifting groove; 508. lifting threaded rod; 509. second turntable; 510. lifting block; 511. pressing plate; 6. cooling mechanism; 601. fixing block; 602. first cooling pipe; 603. second cooling pipe; 604. delivery pump; 605. straight pipe; 606. liquid storage tank; 607. first connecting pipe; 608. second connecting pipe; 609. third connecting pipe. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figure 1-5As shown, an embodiment of the present invention provides a welding deformation control device for a steel-aluminum composite structural member, comprising a base 1, a fixing mechanism 5 and a cooling mechanism 6, wherein a connecting block 2 is fixedly connected to the middle of the rear end outer wall of the base 1, and both sides of the upper end of the base 1 are fixedly connected to a support frame 4, and a fixing mechanism 5 is arranged inside the base 1, and the fixing mechanism 5 comprises a bidirectional threaded rod 502 and two lifting threaded rods 508, and both sides of the front end and the rear end outer wall of the base 1 are provided with a slide groove 501, and both sides of the bidirectional threaded rod 502 penetrate the base 1 and are fixedly connected to a first rotating disk 503, and the bidirectional threaded rod 502 is fixedly connected to the first rotating disk 503, and the first rotating disk 503 is fixedly connected to the first rotating disk 503. Both sides of the outer wall of the rod 502 are threadedly connected with moving blocks 504, and the upper end of the moving block 504 is fixedly connected with a limiting plate 505. The front end and the rear end outer wall of the support frame 4 are both provided with a lifting groove 507 on one side near the center of the base 1. The outer wall of the lifting threaded rod 508 is threadedly connected with a lifting block 510, and the lower end of the lifting block 510 is fixedly connected with a pressing plate 511. The rear end of the base 1 is provided with a cooling mechanism 6, and the cooling mechanism 6 includes two first cooling pipes 602 and two second cooling pipes 603. The upper end of the connecting block 2 is provided with a delivery pump 604;

[0039] The bidirectional threaded rod 502 in the fixing mechanism drives the moving block 504 threadedly connected to the bidirectional threaded rod 502 to move inside the slide groove 501, and the limiting plate 505 fixedly connected to the moving block 504 is used to limit the movement of the steel-aluminum composite structural member. The lifting threaded rod 508 cooperates to drive the lifting block 510 threadedly connected to the lifting threaded rod 508 to move inside the lifting groove 507, and the pressing plate 511 fixedly connected to the lower end of the lifting block 510 is used to press the steel-aluminum structural member onto the base 1, thereby facilitating the staff to fix the steel-aluminum composite structural members of different sizes, thereby improving the applicability of the device.

[0040] Two fixed blocks 601 are fixedly connected to the middle of the upper end of the base 1, and the outer walls on both sides of the connecting block 2 are fixedly connected to the liquid storage tank 606. The water inlet and the water outlet of the delivery pump 604 are fixedly connected to the straight pipe 605. The upper end of the liquid storage tank 606 is connected through the first connecting pipe 607, and the side of the rear end of the second cooling pipe 603 close to the center of the base 1 is connected through the second connecting pipe 608, and the side of the rear end of the first cooling pipe 602 away from the center of the base 1 is connected through the third connecting pipe 609;

[0041] The first connecting pipe 607, the second connecting pipe 608, the third connecting pipe 609, the first cooling pipe 602 and the second cooling pipe 603 in the cooling mechanism 6 are connected to each other, and the coolant stored in the liquid storage tank 606 is transported to the first cooling pipe 602 and the second cooling pipe 603 by the delivery pump 604, so as to cool the vicinity of the welding seam of the steel-aluminum composite structural member to prevent the non-welding portion from absorbing too much heat and expanding. The lifting block 510 moves downward and the pressing plate 511 is used to press down to reduce the arching deformation of the structural member. The two methods cooperate with each other to enhance the anti-deformation capability.

[0042] The middle part of the outer wall of the bidirectional threaded rod 502 is rotatably connected to the base 1, and the moving blocks 504 slide inside the slide groove 501;

[0043] By rotating the first rotating disk 503 , the bidirectional threaded rod 502 moves the moving block 504 threadedly connected thereto to move in the sliding groove 501 , thereby changing the distance between the limiting plates 505 fixedly connected to the moving block 504 .

[0044] The front and rear ends of the inner walls on both sides of the slide groove 501 are fixedly connected with guide rods 506, and the outer walls of the guide rods 506 are slidably connected with the moving blocks 504;

[0045] The guide rod 506 fixedly connected inside the slide groove 501 is slidably connected to the moving block 504, so that the moving block 504 can be prevented from tilting when driven by the bidirectional threaded rod 502, thereby improving the smoothness of the movement of the moving block 504.

[0046] The upper ends of the lifting threaded rods 508 all penetrate the support frame 4 and are fixedly connected to the second turntable 509, and the lifting blocks 510 all slide inside the lifting slots 507;

[0047] By rotating the second turntable 509 , the lifting threaded rod 508 drives the lifting block 510 threadedly connected thereto to move up and down inside the lifting slot 507 , thereby driving the pressing plate 511 fixedly connected to the lifting block 510 to move up and down.

[0048] The base 1 and the upper end of the fixed block 601 are both provided with a steel-aluminum composite structural body 3, and the side of the straight pipe 605 away from the center of the connecting block 2 is connected to the liquid storage tank 606;

[0049] By placing the steel-aluminum composite structural part body 3 on the base 1 and the fixing block 601, it can be pressed down by the pressing plate 511 and clamped with the limiting plate 505 to limit the movement of the steel-aluminum composite structural part, which also helps to reduce the arching deformation phenomenon during welding.

[0050] The upper ends of the first connecting pipes 607 are connected to the second cooling pipes 603, and the lower ends of the second connecting pipes 608 are connected to the first cooling pipes 602.

[0051] The two first cooling pipes 602 and the two second cooling pipes 603 are connected through the first connecting pipe 607, the second connecting pipe 608 and the third connecting pipe 609, and the delivery pump 604 and the liquid storage tank 606 are connected through the straight pipe 605, so that the coolant can circulate.

[0052] The first cooling pipe 602 is disposed inside the fixed block 601, and the second cooling pipe 603 is disposed inside the pressing plate 511;

[0053] The coolant flows through the first cooling pipe 602 and the second cooling pipe 603 arranged inside the pressing plate 511 and the fixing block 601, and the pressing plate 511 and the fixing block 601 sandwich the steel-aluminum composite structural member body 3 in the middle, so that the coolant can be used to take away excess heat and prevent the non-welded parts from overheating and expanding.

[0054] The method for using the welding deformation control device for a steel-aluminum composite structural part comprises the following steps:

[0055] S1: First, place the steel-aluminum composite structure on the upper surface of the base 1, between the two limiting plates 505, then rotate the first turntable 503, drive the bidirectional threaded rod 502 fixedly connected to the first turntable 503 to rotate in the base 1, and let the moving block 504 threadedly connected to the bidirectional threaded rod 502 move along the guide rod 506 inside the slide groove 501, and move the limiting plates 505 towards each other. The moving distance is adjusted according to the specific size, and the steel-aluminum composite structure body 3 is clamped to prevent displacement;

[0056] S2: Secondly, the two second turntables 509 are rotated to drive the lifting threaded rod 508 fixed at the lower end to rotate inside the lifting groove 507, so that the lifting block 510 threadedly connected to the lifting threaded rod 508 moves downward along the lifting groove 507, and then the pressing plate 511 fixedly connected to the lower end of the lifting block 510 is used to press the steel-aluminum composite structural part body 3 onto the base 1, and at the same time, the steel-aluminum composite structural part is prevented from arching during subsequent welding;

[0057] S3: Finally, the first cooling pipe 602, the second cooling pipe 603, the first connecting pipe 607, the second connecting pipe 608 and the third connecting pipe 609 are connected to each other to form a flow channel for the coolant, and the pressure plate 511 and the fixing block 601 are in contact with the steel-aluminum composite structural part body 3. Then, when the steel-aluminum composite structural part is welded with a welding gun, the delivery pump 604 is started through an external controller, and the flowing coolant takes away the excess heat to prevent thermal expansion.

[0058] Working principle: When using the welding deformation control device for steel-aluminum composite structural parts, the staff first places the steel-aluminum composite structural part on the base 1, rotates the first turntable 503, and moves the moving block 504 threadedly connected to the bidirectional threaded rod 502 to move in the slide groove 501, changes the distance between the limiting plates 505, and clamps the steel-aluminum composite structural part body 3. Then, the second turntable 509 is rotated to allow the lifting threaded rod 508 to drive the lifting block 510 threadedly connected to it to move downward in the lifting groove 507, and drive the pressing plate 511 to press down the steel-aluminum composite structural part body 3. , complete the fixation, and finally start the delivery pump 604 through the external controller during the welding process to deliver the coolant in the liquid storage tank 606 to the first cooling pipe 602 and the second cooling pipe 603, thereby reducing the temperature near the pressing plate 511 and the fixing block 601, taking away the excess heat generated during welding, and reducing the expansion of the steel-aluminum composite structural part body 3. Under the action of the pressing plate 511, the arching deformation of the steel-aluminum composite structural part body 3 can be reduced. After the welding is completed, rotate the second turntable 509 and the first turntable 503 to release the restriction on the steel-aluminum composite structural part and take it out.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding deformation control device for a steel-aluminum composite structural member, comprising a base (1), a fixing mechanism (5) and a cooling mechanism (6), characterized in that: A connecting block (2) is fixedly connected to the middle of the rear end outer wall of the base (1), and support frames (4) are fixedly connected to both sides of the upper end of the base (1). A fixing mechanism (5) is arranged inside the base (1), and the fixing mechanism (5) comprises a bidirectional threaded rod (502) and two lifting threaded rods (508). Slide grooves (501) are provided on both sides of the front end and rear end outer walls of the base (1), and both sides of the bidirectional threaded rod (502) penetrate the base (1) and are fixedly connected to a first rotating disk (503), and both sides of the outer wall of the bidirectional threaded rod (502) are threadedly connected to moving blocks (504). The upper end of the moving block (504) is fixedly connected to a limiting plate (505), the front end and the rear end outer wall of the support frame (4) are both provided with a lifting groove (507) on one side close to the center of the base (1), the outer wall of the lifting threaded rod (508) is threadedly connected to a lifting block (510), the lower end of the lifting block (510) is fixedly connected to a pressing plate (511), the rear end of the base (1) is provided with a cooling mechanism (6), the cooling mechanism (6) includes two first cooling pipes (602) and two second cooling pipes (603), and the upper end of the connecting block (2) is provided with a delivery pump (604).

2. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 1, characterized in that: Two fixed blocks (601) are fixedly connected to the middle of the upper end of the base (1), the outer walls on both sides of the connecting block (2) are fixedly connected to a liquid storage tank (606), the water inlet and the water outlet of the delivery pump (604) are fixedly connected to a straight pipe (605), the upper end of the liquid storage tank (606) is connected to a first connecting pipe (607), the rear end of the second cooling pipe (603) is connected to a second connecting pipe (608) on one side close to the center of the base (1), and the rear end of the first cooling pipe (602) is connected to a third connecting pipe (609) on one side away from the center of the base (1).

3. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 1, characterized in that: The middle part of the outer wall of the bidirectional threaded rod (502) is rotatably connected to the base (1), and the moving blocks (504) all slide inside the sliding grooves (501).

4. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 1, characterized in that: The front and rear ends of the inner walls on both sides of the slide groove (501) are fixedly connected with guide rods (506), and the outer walls of the rod bodies of the guide rods (506) are slidably connected with the moving blocks (504).

5. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 1, characterized in that: The upper ends of the lifting threaded rods (508) all penetrate the support frame (4) and are fixedly connected to the second rotating disk (509), and the lifting blocks (510) all slide inside the lifting slots (507).

6. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 2, characterized in that: The upper ends of the base (1) and the fixing block (601) are both provided with a steel-aluminum composite structural body (3), and the side of the straight-through pipe (605) away from the center of the connecting block (2) is connected to the liquid storage tank (606).

7. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 2, characterized in that: The upper ends of the first connecting tubes (607) are connected to the second cooling tubes (603), and the lower ends of the second connecting tubes (608) are connected to the first cooling tubes (602).

8. The device for controlling welding deformation of a steel-aluminum composite structural member according to claim 2, characterized in that: The first cooling pipe (602) is arranged inside the fixed block (601), and the second cooling pipe (603) is arranged inside the pressing plate (511).

9. A method for using a welding deformation control device for a steel-aluminum composite structural part, characterized in that: The following steps are involved: S1: First, place the steel-aluminum composite structural member on the upper surface of the base (1), between the two limiting plates (505), then rotate the first turntable (503), driving the bidirectional threaded rod (502) fixedly connected to the first turntable (503) to rotate inside the base (1), allowing the moving block (504) threadedly connected to the bidirectional threaded rod (502) to move along the guide rod (506) inside the slide groove (501), and move the limiting plates (505) towards each other, and the moving distance is adjusted according to the specific size, so as to clamp the steel-aluminum composite structural member body (3) to prevent displacement; S2: Secondly, the two second rotating disks (509) are rotated to drive the lifting threaded rod (508) fixed at the lower end to rotate inside the lifting groove (507), so that the lifting block (510) threadedly connected to the lifting threaded rod (508) moves downward along the lifting groove (507), and then the steel-aluminum composite structural component body (3) is pressed onto the base (1) by using the pressing plate (511) fixedly connected to the lower end of the lifting block (510), and at the same time, the steel-aluminum composite structural component is prevented from arching during subsequent welding; S3: Finally, the first cooling pipe (602), the second cooling pipe (603), the first connecting pipe (607), the second connecting pipe (608) and the third connecting pipe (609) are connected to each other to form a flow channel for the coolant, and the pressure plate (511) and the fixing block (601) are in contact with the steel-aluminum composite structural part body (3). Then, when the steel-aluminum composite structural part is welded with a welding gun, the delivery pump (604) is started through an external controller, and the flowing coolant takes away the excess heat to prevent thermal expansion.

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