Automobile backrest assembly welding tool

Abstract

The invention relates to the technical field of automobile backrest assembly welding, in particular to an automobile backrest assembly welding tool which comprises a welding tool body and a mounting seat arranged on the welding tool body. The automobile backrest assembly is transversely and longitudinally limited through a positioning column and a clamping plate, an air cylinder in the driving assembly is started, the output end of the air cylinder drives a bottom plate to do reciprocating motion, worm wheels on the two sides are driven to rotate through two worms rotationally installed on the two sides of the bottom plate, and the two worms are opposite in thread rotating direction; the two worm wheels rotate in the opposite directions, the two welding gun connecting ends are arranged in a staggered mode, the automobile backrest assembly on the lower portion is welded in a segmented mode, the phenomena of local area expansion and contraction caused by too concentrated heat are avoided, and the product quality is guaranteed. The first adjusting assembly and the second adjusting assembly are matched to jointly complete comprehensive welding operation of the automobile backrest assembly.

Description

Technical Field

[0001] The invention relates to the technical field of automobile backrest assembly welding, in particular to an automobile backrest assembly welding tool. Background Art

[0002] In the manufacturing process of automobile backrests, in order to ensure the consistency and efficiency of production and processing, and to improve product quality and safety, special welding tooling is required to fix the parts to be welded in the automobile backrest assembly, position and install each part at the predetermined position of the tooling, and ensure the relative position accuracy between the components. The existing technology uses a vertical assembly method to clamp the U-shaped bend pipe to achieve one-time clamping for welding on both sides.

[0003] For example, the Chinese patent with application number CN202310282636.9 discloses a welding tool and method for producing automobile seat frames, including a universal moving mechanism, a welding platform, a clamping mechanism and a welding angle automatic controller. The universal moving mechanism includes a base and a universal moving part, which adopts a vertical assembly method to clamp the U-shaped elbow to achieve one-time clamping of two-sided welding. At the same time, a universal moving mechanism is designed, which can drive the automobile seat frame clamped thereon to move with six degrees of freedom under the control of the welding angle automatic controller, so that the welding robot can complete the welding action of some corners, avoiding multiple clamping, and greatly improving the welding efficiency and welding quality of the automobile seat frame. However, its one-time clamping method will cause the heat generated during the welding process to be too concentrated, resulting in expansion and contraction of the local area, thereby causing the overall shape of the workpiece to change, affecting the assembly accuracy and appearance quality. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a welding tool for an automobile backrest assembly to solve the technical problem that the one-time clamping method of the prior art causes the heat generated during the welding process to be too concentrated, resulting in expansion and contraction of the local area, thereby causing the overall shape of the workpiece to change, affecting the assembly accuracy and appearance quality.

[0005] Based on the above purpose, the present invention provides a welding tool for an automobile backrest assembly, comprising a welding tool body and a mounting seat arranged on the welding tool body, the mounting seat is provided with a positioning column for fixing the automobile backrest assembly, the positioning column is mounted on the mounting seat through a positioning assembly, at least two welding gun connection ends are also installed on the upper end of the welding tool body, and the automobile backrest assembly welding tool also includes:

[0006] A support platform, the support platform is mounted on the mounting seat;

[0007] A sliding frame, the sliding frame is mounted on the welding tool body through an adjusting component 1, and the mounting frame is detachably mounted on the mounting seat;

[0008] A driving assembly for driving the two welding gun connection ends to turn;

[0009] An adjusting component 2 is used for driving the sliding frame to slide.

[0010] Furthermore, the two welding gun connection ends are both placed above the support platform, and the two welding gun connection ends are staggered with respect to each other.

[0011] Furthermore, the positioning component includes:

[0012] The clamping plate is H-shaped and slidably mounted on the mounting seat, and the positioning columns are mounted on both sides of the upper part of the clamping plate through supporting blocks.

[0013] Furthermore, the positioning component also includes:

[0014] A tension spring, both sides of the top of the positioning column extend out of the top support block and are connected to one end of the tension spring, and the other end of the tension spring is connected to the top support block;

[0015] A guide column is slidably mounted on the mounting seat, a middle portion of the clamping plate is fixed to the guide column, and a spring is sleeved on the guide column between the clamping plate and the mounting seat.

[0016] Furthermore, the second adjustment component includes:

[0017] A second guide rail, wherein the second guide rail is installed on the welding tool body;

[0018] A second driving motor, wherein the second driving motor is mounted on the welding tool body, a second lead screw is mounted on the output end of the second driving motor, and the other end of the second lead screw is rotatably mounted on the welding tool body;

[0019] Slider 2, the slider 2 is threadedly mounted on the lead screw 2.

[0020] Furthermore, the first adjustment component includes:

[0021] A guide rail 1, wherein the guide rail 1 is mounted on the slider 2;

[0022] A driving motor 1, wherein the driving motor 1 is installed at a side end of the guide rail 1;

[0023] A lead screw 1, one end of which is mounted on the output end of the drive motor 1, and the other end of which is rotatably mounted on the guide rail 1;

[0024] Slider 1, the slider 1 is threadedly mounted on the lead screw 1, the mounting seat is slidably mounted on the guide rail 1, and the side end of the mounting seat is threadedly connected to the lead screw 1.

[0025] Furthermore, the driving assembly includes:

[0026] A cylinder, wherein the cylinder is mounted on the welding tool body;

[0027] A bottom plate connected to an output end of the cylinder;

[0028] There are two worms, and the two worms are rotatably mounted on two sides of the base plate respectively, and the threads of the two worms have opposite rotation directions;

[0029] There are two worm wheels, and the two worms are respectively installed on the two welding gun connecting ends, and the worm wheel is meshed with the worm.

[0030] Furthermore, a guide ring is installed on the welding tool body, and the diameter of the guide ring matches the outer diameter of the worm.

[0031] Furthermore, a clearance opening is provided on the welding tool body, and a diameter of the clearance opening is larger than an outer diameter of the worm.

[0032] Furthermore, the welding tool body, the mounting seat and the support platform are all provided with repair welding openings.

[0033] The beneficial effects of the present invention are as follows: when using a welding tool for an automobile backrest assembly of the present invention, the automobile backrest assembly to be welded is fixed on the mounting seat by the positioning component, and the automobile backrest assembly is limited in both horizontal and vertical directions by the positioning column and the clamping plate, and then the cylinder in the driving component is started to drive the base plate to move back and forth at its output end, and the two worms installed on both sides of the base plate are rotated to drive the worm wheels on both sides to rotate, and the threads of the two worms are rotated in opposite directions, so that the two worm wheels rotate in opposite directions, and the two welding gun connection ends are arranged to be staggered with each other, so that the automobile backrest assembly below can be welded in sections, avoiding the expansion and contraction of local areas caused by excessive heat concentration, ensuring product quality, and cooperating with the adjustment component one and the adjustment component two to jointly complete the comprehensive welding operation of the automobile backrest assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of the present invention;

[0036] Figure 2 It is a schematic diagram of the assembly of the driving assembly and the welding gun connection end in the present invention;

[0037] Figure 3 It is a schematic diagram of the assembly of the adjustment component 1 and the mounting seat in the present invention;

[0038] Figure 4 It is a schematic diagram of assembling the positioning assembly and the mounting seat in the present invention;

[0039] Figure 5 for Figure 4 A magnified view of the structure at center A;

[0040] Figure 6 It is a schematic diagram of the assembly of the guide rail 1 and the adjustment component 2 in the present invention.

[0041] The markings in the figure are:

[0042] 1. Welding tool body; 2. Mounting seat; 3. Positioning column; 4. Welding gun connection end; 5. Support table; 6. Sliding frame; 7. Clamping plate; 8. Top support block; 9. Tension spring; 10. Guide column; 11. Spring; 12. Guide rail 2; 13. Drive motor 2; 14. Screw 2; 15. Slider 2; 16. Guide rail 1; 17. Drive motor 1; 18. Screw 1; 19. Slider 1; 20. Cylinder; 21. Bottom plate; 22. Worm; 23. Worm wheel; 24. Guide ring; 25. Avoidance; 26. Repair welding opening. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0044] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The embodiment of the present invention provides a welding tool for a vehicle backrest assembly, such as Figure 1-6 As shown, it includes a welding tool body 1 and a mounting seat 2 arranged on the welding tool body 1, and a positioning column 3 for fixing the automobile backrest assembly is provided on the mounting seat 2, and the positioning column 3 is installed on the mounting seat 2 through a positioning component. At least two welding gun connection ends 4 are also installed on the upper end of the welding tool body 1. The automobile backrest assembly welding tool also includes:

[0046] A support platform 5, the support platform 5 is installed on the mounting seat 2;

[0047] A sliding frame 6, the sliding frame 6 is mounted on the welding tool body 1 through an adjusting component 1, and the mounting frame can be detachably mounted on the mounting seat 2;

[0048] A driving assembly for driving two welding gun connection ends 4 to turn;

[0049] An adjusting component 2 is used to drive the sliding frame 6 to slide.

[0050] In this embodiment, the two welding gun connection ends 4 are both placed above the support platform 5, and the two welding gun connection ends 4 are staggered with each other.

[0051] In this embodiment, the positioning component includes:

[0052] The clamping plate 7 is H-shaped and is slidably mounted on the mounting seat 2 , and the positioning columns 3 are mounted on both sides of the upper part of the clamping plate 7 through the supporting blocks 8 .

[0053] In this embodiment, the positioning component also includes:

[0054] A tension spring 9 extends from both sides of the top of the positioning column 3 to the top support block 8 and is connected to one end of the tension spring 9, and the other end of the tension spring 9 is connected to the top support block 8;

[0055] The guide column 10 is slidably mounted on the mounting seat 2 , the middle portion of the clamping plate 7 is fixed to the guide column 10 , and a spring 11 is sleeved on the guide column 10 between the clamping plate 7 and the mounting seat 2 .

[0056] In this embodiment, the second adjustment component includes:

[0057] The second guide rail 12 is installed on the welding tool body 1;

[0058] A second driving motor 13, the second driving motor 13 is mounted on the welding tool body 1, a second lead screw 14 is mounted on the output end of the second driving motor 13, and the other end of the second lead screw 14 is rotatably mounted on the welding tool body 1;

[0059] The second slider 15 is threadedly mounted on the second lead screw 14.

[0060] In this embodiment, the adjustment component 1 includes:

[0061] Guide rail 1 16, guide rail 1 16 is installed on slider 2 15;

[0062] A driving motor 17, wherein the driving motor 17 is mounted on a side end of a guide rail 16;

[0063] A lead screw 18, one end of which is mounted on the output end of a driving motor 17, and the other end of which is rotatably mounted on a guide rail 16;

[0064] The slider 19 is threadedly mounted on the lead screw 18, the mounting seat 2 is slidably mounted on the guide rail 16, and the side end of the mounting seat 2 is threadedly connected to the lead screw 18.

[0065] In this embodiment, the driving component includes:

[0066] Cylinder 20, which is mounted on the welding tool body 1;

[0067] A bottom plate 21, the bottom plate 21 is connected to the output end of the cylinder 20;

[0068] There are two worms 22, which are rotatably mounted on two sides of the bottom plate 21, and the threads of the two worms 22 are in opposite directions;

[0069] There are two worm wheels 23 , and two worm screws 22 are respectively mounted on two welding gun connecting ends 4 , and the worm wheels 23 are meshed with the worm screws 22 .

[0070] Working process and principle: During use of this embodiment, the automobile backrest assembly to be welded is fixed on the mounting seat 2 by the positioning component, and the automobile backrest assembly is limited in both horizontal and vertical directions by the positioning column 3 and the clamping plate 7. Then the cylinder 20 in the driving component is started to drive the base plate 21 to move back and forth at its output end, and the two worms 22 installed on both sides of the base plate 21 are rotated to drive the worm wheels 23 on both sides to rotate. The threads of the two worms 22 are in opposite directions, so that the two worm wheels 23 rotate in opposite directions. In addition, the two welding gun connection ends 4 are staggered with each other, so that the automobile backrest assembly below can be welded in sections, and the adjustment component 1 and the adjustment component 2 are used to jointly complete the comprehensive welding operation of the automobile backrest assembly.

[0071] In this embodiment, if Figure 2 As shown, a guide ring 24 is installed on the welding tool body 1 , and the diameter of the guide ring 24 matches the outer diameter of the worm 22 .

[0072] In this embodiment, if Figure 2As shown, the welding tool body 1 is further provided with an escape opening 25 , and the diameter of the escape opening 25 is larger than the outer diameter of the worm 22 .

[0073] In this embodiment, if Figure 1 , Figure 3 , Figure 4 , Figure 6 As shown, the welding tool body 1 , the mounting seat 2 and the support platform 5 are all provided with repair welding openings 26 .

[0074] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0075] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A welding tool for an automobile backrest assembly, comprising a welding tool body (1) and a mounting seat (2) arranged on the welding tool body (1), wherein the mounting seat (2) is provided with a positioning column (3) for fixing the automobile backrest assembly, characterized in that: The positioning column (3) is mounted on the mounting seat (2) via a positioning assembly, and at least two welding gun connection ends (4) are also mounted on the upper end of the welding tool body (1). The automobile backrest assembly welding tool also includes: A support platform (5), wherein the support platform (5) is mounted on the mounting seat (2); A sliding frame (6), the sliding frame (6) being mounted on the welding tool body (1) via an adjusting component 1, and the mounting frame being detachably mounted on the mounting seat (2); A driving assembly for driving the two welding gun connection ends (4) to turn; An adjusting component 2 is used for driving the sliding frame (6) to slide.

2. The automobile backrest assembly welding tool according to claim 1, characterized in that: The two welding gun connection ends (4) are both placed above the support platform (5), and the two welding gun connection ends (4) are arranged to be staggered with respect to each other.

3. The automobile backrest assembly welding tool according to claim 1, characterized in that: The positioning component comprises: The clamping plate (7) is H-shaped and is slidably mounted on the mounting seat (2); the positioning column (3) is mounted on both sides of the upper part of the clamping plate (7) through a supporting block (8).

4. The automobile backrest assembly welding tool according to claim 3, characterized in that: The positioning component also includes: A tension spring (9), both sides of the top of the positioning column (3) extend out of the top support block (8) and are connected to one end of the tension spring (9), and the other end of the tension spring (9) is connected to the top support block (8); A guide column (10), wherein the guide column (10) is slidably mounted on the mounting seat (2), the middle portion of the clamping plate (7) is fixed to the guide column (10), and a spring (11) is sleeved on the guide column (10) between the clamping plate (7) and the mounting seat (2).

5. The automobile backrest assembly welding tool according to claim 4, characterized in that: The second adjustment component comprises: A second guide rail (12), the second guide rail (12) being mounted on the welding tool body (1); A second drive motor (13), the second drive motor (13) being mounted on the welding tool body (1), a second lead screw (14) being mounted on the output end of the second drive motor (13), the other end of the second lead screw (14) being rotatably mounted on the welding tool body (1); Slider 2 (15), the slider 2 (15) is threadedly mounted on the lead screw 2 (14).

6. The automobile backrest assembly welding tool according to claim 5, characterized in that: The first adjustment component comprises: A guide rail 1 (16), wherein the guide rail 1 (16) is mounted on the slider 2 (15); A driving motor 1 (17), wherein the driving motor 1 (17) is mounted on a side end of the guide rail 1 (16); A lead screw (18), one end of which is mounted on the output end of the drive motor (17), and the other end of which is rotatably mounted on the guide rail (16); A slider (19), wherein the slider (19) is threadedly mounted on the lead screw (18), the mounting seat (2) is slidably mounted on the guide rail (16), and the side end of the mounting seat (2) is threadedly connected to the lead screw (18).

7. The automobile backrest assembly welding tool according to claim 2, characterized in that: The drive assembly comprises: A cylinder (20), wherein the cylinder (20) is mounted on the welding tool body (1); A bottom plate (21), the bottom plate (21) being connected to an output end of the cylinder (20); A worm (22), wherein there are two worms (22), and the two worms (22) are rotatably mounted on two sides of the base plate (21), and the threads of the two worms (22) are in opposite directions; A worm wheel (23), wherein there are two worm wheels (23), and the two worm screws (22) are respectively mounted on the two welding gun connection ends (4), and the worm wheel (23) is meshed with the worm screw (22).

8. The automobile backrest assembly welding tool according to claim 7, characterized in that: A guide ring (24) is installed on the welding tool body (1), and the diameter of the guide ring (24) matches the outer diameter of the worm (22).

9. The automobile backrest assembly welding tool according to claim 8, characterized in that: The welding tool body (1) is also provided with an escape opening (25), and the diameter of the escape opening (25) is larger than the outer diameter of the worm (22).

10. The automobile backrest assembly welding tool according to claim 1, characterized in that: The welding tool body (1), the mounting seat (2) and the support platform (5) are all provided with repair welding openings (26).

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