Welding clamping mechanism for automobile seat backrest frame

Abstract

The utility model discloses a welding clamping mechanism of an automobile seat backrest frame, which belongs to the technical field of automobile seat production equipment and comprises a supporting seat and a supporting plate fixed on the supporting seat, and further comprises a plurality of limiting holes and inserting holes which are formed in the supporting plate. The limiting hole and the inserting hole are internally communicated with electromagnetic valves, the first clamping piece is inserted into the inserting hole and used for clamping and fixing the straight steel pipe, and the position adjusting piece is inserted into the limiting hole. A plurality of first clamping pieces and a plurality of second clamping pieces are arranged on the supporting plate at a time and used in cooperation with the second movable clamping arm and the third fixed clamping arm, a plurality of straight steel pipes can be clamped and fixed at a time, and the U-shaped steel pipe and the plurality of straight steel pipes are fixed in place at a time through three-point fixing of the U-shaped steel pipe. And multi-point welding operation is completed at a time, and the welding efficiency of the automobile seat backrest frame is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat production equipment, in particular to a welding clamping mechanism for an automobile seat back frame. Background Art

[0002] The car seat is composed of three main parts: frame, angle adjuster and soft bag. The car seat frame is divided into seat back frame and cushion frame, both of which are assembled by welding multiple metal structures. The main structure of the car seat back frame is assembled by welding U steel pipes and multiple straight steel pipes of different lengths. Some existing welding fixtures of the seat back frame can only fix one or two steel pipes at a time to facilitate welding. It is difficult to position and fix multiple steel pipes according to the shape of the seat back at one time, and complete multi-point welding operations at one time, resulting in relatively low welding efficiency.

[0003] The existing patent application number: 202222352311.7 discloses a fixing device for welding the frame of an automobile seat backrest. When in use, the device can quickly limit and fix the steel pipe to be welded through a fixed adjustment mechanism, improve the clamping effect of the steel pipe to be welded, and maintain the stability of the steel pipe to be welded. In the above-mentioned prior art, the device can only limit and fix a small number of steel pipes at a time, and the above-mentioned technical problems still exist. Utility Model Content

[0004] The purpose of the utility model is to provide a welding clamping mechanism for a car seat back frame, so as to solve the problem in the above-mentioned background technology that it is difficult to position and fix multiple steel pipes according to the shape of the seat back at one time and complete multi-point welding operations at one time, resulting in relatively low welding efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a welding clamping mechanism for a car seat back frame, comprising a support seat and a support plate fixed on the support seat, the welding clamping mechanism also comprises a plurality of limiting holes and plug holes arranged on the support plate, and the limiting holes and the plug holes are both connected with electromagnetic valves.

[0007] A first clamping piece is inserted into the insertion hole and is used for clamping and fixing the straight steel pipe.

[0008] A position adjusting member is inserted into the limiting hole.

[0009] A second clamping member is provided on the position adjusting member and is used to assist in clamping and fixing the U-shaped steel pipe.

[0010] A third screw rod is arranged on the vertical groove and rotates on the support plate.

[0011] A third nut seat is threadably sleeved on the third screw rod.

[0012] A third fixed clamping arm in a ram's horn shape is fixed on the third nut seat.

[0013] A second movable clamping arm is fixedly connected to the free end of a third telescopic rod embedded in the third nut seat, and the third telescopic rod is used to linearly push the second movable clamping arm to move.

[0014] Furthermore, the limiting holes are relatively distributed on the support plate, and the limiting holes are divided into at least two rows.

[0015] Furthermore, the sockets are relatively distributed on the support plate, and the sockets are also divided into at least two rows.

[0016] Furthermore, the first clamping member comprises:

[0017] A first plug block is plugged into the limiting hole.

[0018] A first limiting sleeve is fixed on the first inserting block.

[0019] The first nut seat disposed in the first limiting sleeve is rotated.

[0020] The rotating seat disposed on the first nut seat is rotated.

[0021] Furthermore, the first clamping member further comprises:

[0022] A first telescopic rod is embedded on the end surface of the rotating seat.

[0023] A first movable clamping arm is fixed to the free end of the first telescopic rod.

[0024] A first fixed clamping arm is fixed to one side of the rotating base.

[0025] Furthermore, the position adjusting member comprises:

[0026] A second plug-in block is plugged into the plug-in hole.

[0027] A second limiting sleeve is fixed on the second inserting block.

[0028] The second screw rod disposed in the second limiting sleeve is rotated.

[0029] A second nut seat is threadably sleeved on the second screw rod.

[0030] A second telescopic rod is embedded in the end surface of the second nut seat.

[0031] Furthermore, the second clamping member comprises:

[0032] Rotate the rotating seat disposed at the free end of the second telescopic rod.

[0033] A second fixed clamping arm is fixed on the rotating seat.

[0034] A convex plate is fixed to one end of the second fixed clamping arm, and a through groove is provided on the convex plate.

[0035] A rotating clamping arm is hinged on the rotating seat.

[0036] A T-bolt is hinged to one end of the rotating clamp arm.

[0037] A bolt cap is threadably sleeved on one end of the T-bolt.

[0038] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0039] 1. The utility model can clamp and fix multiple straight steel pipes at one time by arranging multiple first clamping members and second clamping members on the support plate at one time, and cooperate with the use of the second movable clamping arm and the third fixed clamping arm, and fix the U-shaped steel pipe at three points, so that the U-shaped steel pipe and multiple straight steel pipes are fixed in place at one time, and the multi-point welding operation is completed at one time, which greatly improves the welding efficiency of the car seat back frame;

[0040] 2. The utility model rotates the rotating seat in the circumferential direction to adjust the orientation of the first movable clamp arm and the first fixed clamp arm, so as to clamp and fix the straight steel pipe horizontally or vertically. Since the two arms of the U-shaped steel pipe in the car seat back frame are mostly inclined, the second clamping member, the second movable clamp arm and the third fixed clamp arm can be used in coordination to fix the U-shaped steel pipe with two inclined arms at three points, thereby improving its fixing stability and avoiding shaking during welding operation to affect the welding effect of the welding point;

[0041] 3. The utility model can fix straight steel pipes of different lengths and U-shaped steel pipes of different sizes by arranging a plurality of first clamping members and second clamping members on the support plate at one time, and cooperates with the use of the second movable clamping arm and the third fixed clamping arm, so as to facilitate welding of automobile seat back frames of different sizes and different inclinations, thereby expanding its scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is an axonometric drawing of the utility model;

[0043] Figure 2 It is a rear view of the utility model;

[0044] Figure 3 It is an axonometric view of the first clamping member in the utility model;

[0045] Figure 4It is an axonometric view of the second clamping member in the utility model.

[0046] In the figure: 1. support seat; 2. support plate; 3. limiting hole; 4. first clamping member; 41. first plug block; 42. first limiting sleeve; 43. first screw rod; 44. first nut seat; 45. rotating seat; 46. first telescopic rod; 47. first movable clamp arm; 48. first fixed clamp arm; 5. position adjustment member; 51. second plug block; 52. second limiting sleeve; 53. second screw rod; 54. second nut seat; 55. second telescopic rod; 6. second clamping member; 61. rotating seat; 62. second fixed clamp arm; 63. convex plate; 64. through groove; 65. rotating clamp arm; 66. T-bolt; 67. bolt cap; 7. vertical groove; 8. third screw rod; 9. third nut seat; 10. third telescopic rod; 11. second movable clamp arm; 12. third fixed clamp arm; 13. solenoid valve; 14. jack. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0048] like Figures 1 to 4 As shown, a welding clamping mechanism for a car seat back frame includes a support seat 1 and a support plate 2 fixed on the support seat 1. The welding clamping mechanism also includes a plurality of limiting holes 3 and plug holes 14 arranged on the support plate 2. The limiting holes 3 and the plug holes 14 are both connected to electromagnetic valves 13.

[0049] A first clamping member 4 is inserted into the insertion hole 14 and is used for clamping and fixing the straight steel pipe.

[0050] A position adjusting member 5 is inserted into the limiting hole 3 .

[0051] A second clamping member 6 is provided on the position adjusting member 5 and is used to assist in clamping and fixing the U-shaped steel pipe.

[0052] A third screw rod 8 is arranged on the vertical slot 7 on the support plate 2 and rotates.

[0053] The third nut seat 9 is threadably sleeved on the third screw rod 8 .

[0054] A third fixed clamping arm 12 in a ram's horn shape is fixed on the third nut seat 9 .

[0055] The second movable clamping arm 11 is fixedly connected to the free end of the third telescopic rod 10 embedded in the third nut seat 9, and the third telescopic rod 10 is used to linearly push the second movable clamping arm 11 to move.

[0056] Before use, U-shaped steel pipes and straight steel pipes of corresponding sizes can be selected according to the size of the automobile seat back frame to be welded, and then the height of the third nut seat 9 is adjusted to an appropriate height on the support plate 2 according to the coordinate position of the U-shaped steel pipe and the straight steel pipe after splicing, and the middle of the U-shaped steel pipe is placed between the third fixed clamping arm 12 and the second movable clamping arm 11 in the shape of a ram's horn, and the third telescopic rod 10 is controlled to retract until the second movable clamping arm 11 and the third fixed clamping arm 12 clamp the middle of the U-shaped steel pipe, and then according to the number of straight steel pipes used, the first clamping piece 4 corresponding to the number is used, and the first clamping piece 4 is installed on the support plate 2 according to the splicing coordinate position of the straight steel pipes, and the straight steel pipe is clamped and fixed at the designated position on the support plate 2 using the first clamping piece 4, and then according to the two ends of the U-shaped steel pipe The coordinate position of the support plate is determined by installing two position adjusting members 5 at the corresponding approximate positions on the support plate, and then the position of the second clamping member 6 is carefully adjusted by the two position adjusting members 5, and the second clamping member 6 clamps and fixes the two ends of the U-shaped steel pipe, so that the car seat back frame can be spliced ​​out vertically on one side of the support plate 2, and finally the connecting points of the straight steel pipe and the U-shaped steel pipe, and the straight steel pipe and the straight steel pipe are welded, and the welding operation of multiple welding points is completed at one time. If the number of steel pipes used in the car seat back frame is relatively small, it can be welded and formed at one time. If the number of steel pipes used in the car seat back frame is relatively large, the welding and forming operation of the car seat back frame can be completed through only two or three operations, which greatly reduces the steps of welding and forming of the car seat back frame and improves its welding and forming efficiency.

[0057] In this embodiment, the limiting holes 3 are relatively distributed on the support plate 2, and the limiting holes 3 are divided into at least two rows, so that the first clamping member 4 can be set at different heights, so that it can clamp and fix the straight steel pipe at different positions on the support plate 2 to adapt to the welding requirements of automobile seat back frames of different sizes.

[0058] In this embodiment, the sockets 14 are also relatively distributed on the support plate 2, and the sockets 14 are also divided into at least two rows, so as to facilitate the installation of the position adjustment member 5 at different positions on the support plate 2, and make the position of the position adjustment member 5 staggered with the position of the first clamping member 4 to avoid mutual interference between the two, and facilitate the second clamping member 6 to support and fix the two ends of the U-shaped steel pipe, so that the car seat back frame can be assembled vertically on the same side of the support plate 2, which is convenient for completing the welding operation of multiple welding points at one time and reducing the number of forming operations of the car seat back frame.

[0059] In this embodiment, the first clamping member 4 includes:

[0060] The first inserting block 41 is inserted into the limiting hole 3 , and the first inserting block 41 is tightly fitted with the inside of the limiting hole 3 .

[0061] A first limiting sleeve 42 is fixed on the first inserting block 41 .

[0062] The first nut seat 44 disposed in the first limiting sleeve 42 is rotated.

[0063] The rotating seat 45 arranged on the first nut seat 44 is rotated. Since the first plug block 41 fits tightly against the inner wall of the limiting hole 3, when the first plug block 41 is inserted into the limiting hole 3, the two form a piston-type connection, and by opening the solenoid valve 13, the gas in the limiting hole 3 is completely discharged, and then the solenoid valve 13 is closed, so that a vacuum-like state is formed between the inner wall of the limiting hole 3 and the inner wall of the first plug block 41, thereby achieving a limiting and fixing effect on the first plug block 41. By inserting the first plug block 41 into the limiting holes 3 at different positions, the approximate position adjustment of the first telescopic rod 46 can be completed, and then the position of the first nut seat 44 can be fine-tuned by rotating the first screw rod 43, and the rotating seat 45 is driven to move synchronously by the first nut seat 44 to achieve fine-tuning of the position of the rotating seat 45.

[0064] In this embodiment, the first clamping member 4 further includes:

[0065] A first telescopic rod 46 is embedded on the end surface of the rotating seat 45 .

[0066] A first movable clamping arm 47 is fixed to the free end of the first telescopic rod 46 .

[0067] The first fixed clamp arm 48 fixed on one side of the rotating seat 45 drives the first nut seat 44 to move by rotating the first screw rod 43, and the first nut seat 44 drives the rotating seat 45, the first telescopic rod 46, the first movable clamp arm 47 and the first fixed clamp arm 48 to move synchronously, so as to fine-tune the positions of the first movable clamp arm 47 and the first fixed clamp arm 48, and through the circumferential rotation of the rotating seat 45, the first movable clamp arm 47 and the first fixed clamp arm 48 can clamp and fix the horizontal or vertical straight steel pipe, so as to facilitate the assembly of the shape of the car seat back frame and facilitate the subsequent one-time multi-point welding operation.

[0068] In this embodiment, the position adjusting member 5 includes:

[0069] The second plug block 51 is plugged into the plug hole 14 , and the outer wall of the second plug block 51 is tightly fitted with the inner wall of the plug hole 14 .

[0070] A second limiting sleeve 52 is fixed on the second inserting block 51 .

[0071] The second screw rod 53 disposed in the second limiting sleeve 52 is rotated.

[0072] The second nut seat 54 is threadedly sleeved on the second screw rod 53 .

[0073] The second telescopic rod 55 embedded in the end surface of the second nut seat 54 forms a piston-type connection through the mutual cooperation between the second plug block 51 and the socket 14. It can also be opened by the solenoid valve 13 to remove excess gas in the socket 14, and then closed again, so that a near vacuum state is formed between the inner wall of the socket 14 and the outer wall of the second plug block 51, so as to facilitate the fixation of the second plug block 51. The second plug block 51 can be connected with the socket 14 at different positions to achieve the approximate position adjustment of the second telescopic rod 55, and then the second screw rod 53 is rotated to drive the second nut seat 54 to move linearly, which will drive the second telescopic rod 55 to move synchronously to achieve fine adjustment of the position of the second telescopic rod 55.

[0074] In this embodiment, the second clamping member 6 includes:

[0075] The rotating seat 61 disposed at the free end of the second telescopic rod 55 is rotated.

[0076] The second fixed clamping arm 62 is fixed on the rotating base 61 .

[0077] A convex plate 63 is fixed to one end of the second fixed clamping arm 62 , and a through slot 64 is formed on the convex plate 63 .

[0078] A rotating clamping arm 65 is hinged on the rotating base 61 .

[0079] A T-bolt 66 is hinged to one end of the rotating clamp arm 65 .

[0080] The bolt cap 67 is threadedly sleeved on one end of the T-shaped bolt 66. Since the rotating seat 61 is installed at the free end of the second telescopic rod 55, the position of the rotating seat 61 can be finely adjusted by finely adjusting the position of the second telescopic rod 55. Since the two arms of the U-shaped steel pipe of the car seat back frame are inclined, the axis of the second fixed clamp arm 62 can be kept consistent with the inclination angle of the two arms of the U-shaped steel pipe by rotating the rotating seat 61, and the rotating clamp arm 65 is closed so that it and the second fixed clamp arm 62 wrap the non-welding point parts of the two arms of the U-shaped steel pipe, and the T-shaped bolt 66 is deflected and sleeved in the through groove 64 on the convex plate 63, and then Then, by screwing the bolt nut 67 to make it fit together with the opposite surface of the convex plate 63, the rotating clamp arm 65 and the second fixed clamp arm 62 can be used to clamp and fix the non-welding point parts of the two arms of the U-shaped steel pipe, thereby realizing three-point fixation of the U-shaped steel pipe, improving the fixing stability and firmness of the U-shaped steel pipe, and completing the shape splicing of the car seat back frame, facilitating the smooth progress of subsequent welding operations with multiple welding points, completing the forming welding of the car seat back frame at one time, or completing the welding operations of most of the welding points of the car seat back frame at one time, reducing the steps of forming welding of the car seat back frame, and improving the efficiency of its forming welding operation.

[0081] The above description is only the preferred embodiment of the utility model, and the parts not described in the utility model can be implemented by adopting or drawing on existing technologies. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. The changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the utility model should also fall within the protection scope of the utility model.

Claims

1. A welding clamping mechanism for a car seat back frame, comprising a support seat (1) and a support plate (2) fixed to the support seat (1), characterized in that: The welding clamping mechanism further comprises a plurality of limiting holes (3) and insertion holes (14) provided on the support plate (2), wherein the limiting holes (3) and the insertion holes (14) are both connected to electromagnetic valves (13); A first clamping member (4) inserted into the insertion hole (14) and used for clamping and fixing the straight steel pipe; A position adjustment member (5) inserted into the limiting hole (3); A second clamping member (6) provided on the position adjusting member (5) for assisting in clamping and fixing the U-shaped steel pipe; A third screw rod (8) that rotates with the vertical groove (7) provided on the support plate (2); A third nut seat (9) threadably sleeved on the third screw rod (8); A third fixed clamping arm (12) in the shape of a ram’s horn fixed to the third nut seat (9); A second movable clamp arm (11) is fixedly connected to the free end of a third telescopic rod (10) embedded in the third nut seat (9), and the third telescopic rod (10) is used to linearly push the second movable clamp arm (11) to move.

2. The welding clamping mechanism for the automobile seat back frame according to claim 1, characterized in that: The limiting holes (3) are relatively distributed on the support plate (2), and the limiting holes (3) are divided into at least two rows.

3. The welding clamping mechanism for the automobile seat back frame according to claim 2, characterized in that: The sockets (14) are also relatively distributed on the support plate (2), and the sockets (14) are also divided into at least two rows.

4. The welding clamping mechanism for the automobile seat back frame according to claim 1, characterized in that: The first clamping member (4) comprises: A first insert block (41) inserted into the limiting hole (3); A first limiting sleeve (42) fixed on the first insert block (41); Rotating a first nut seat (44) disposed in the first limiting sleeve (42); A rotating seat (45) arranged on the first nut seat (44) is rotated.

5. The welding clamping mechanism for the automobile seat back frame according to claim 4, characterized in that: The first clamping member (4) further comprises: A first telescopic rod (46) embedded in the end surface of the rotating seat (45); A first movable clamping arm (47) fixed to the free end of the first telescopic rod (46); A first fixed clamping arm (48) is fixed to one side of the rotating seat (45).

6. The welding clamping mechanism for the automobile seat back frame according to claim 1, characterized in that: The position adjustment member (5) comprises: A second plug block (51) plugged into the plug hole (14); A second limiting sleeve (52) fixed on the second insert block (51); Rotating a second screw rod (53) disposed in the second limiting sleeve (52); A second nut seat (54) threadably sleeved on the second screw rod (53); A second telescopic rod (55) is embedded in the end surface of the second nut seat (54).

7. The welding clamping mechanism for the automobile seat back frame according to claim 6, characterized in that: The second clamping member (6) comprises: Rotating a rotating seat (61) provided at the free end of the second telescopic rod (55); A second fixed clamping arm (62) fixed on the rotating seat (61); a convex plate (63) fixed to one end of the second fixed clamping arm (62), wherein the convex plate (63) is provided with a through slot (64); A rotating clamping arm (65) hingedly connected to the rotating seat (61); A T-shaped bolt (66) hinged to one end of the rotating clamp arm (65); A bolt cap (67) is threadedly sleeved on one end of the T-shaped bolt (66).

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