A welding fixture

Abstract

The application relates to a welding tool applied to the field of seat welding, which comprises a base, four first supporting seats are arranged on the base, first limiting units for limiting the positions of supports are respectively arranged on the four first supporting seats, and second limiting units for limiting the position of a main frame are arranged on the base. The application has the technical effect that four supports are respectively arranged on the first supporting seats, the positions of the supports are limited by the first limiting units, then the main frame is arranged on the supports, the position of the main frame is limited by the second limiting units, then an operator welds the contact surfaces between the main frame and the four supports by using a welding device. Since the positions of the components to be welded are fixed during welding, the operator can conveniently perform the welding operation, the components are not prone to shaking during the welding process, and the welding seam quality and the production efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of seat welding technology, and in particular to a welding fixture. Background Technology

[0002] The seat frame is an important component of the seat, providing the basic support structure for the seat cushion.

[0003] Reference Figure 1 The seat cushion frame includes a main frame 1 and two supports 2. The supports 2 are pre-welded together from two brackets 3 and a connecting plate 4. The main frame 1 has a main positioning hole 5, and the brackets 3 have secondary positioning holes 6. In related technologies, operators manually weld the two supports 2 to the bottom of the main frame 1 to form the finished seat cushion frame.

[0004] The above-mentioned manual welding method by operators makes it difficult for them to simultaneously fix the position of the main frame and the two supports and weld them into a whole during the welding process. This makes it difficult to accurately position the relative position of the main frame and the two supports, and the weld position is prone to deviation, resulting in inconsistent weld quality. This method is time-consuming and labor-intensive, and also leads to low production efficiency of the seat cushion frame. Summary of the Invention

[0005] To address the issue of manual welding, where operators struggle to simultaneously fix and weld the main frame and two supports into a single unit, leading to inaccurate positioning of the relative positions of the main frame and supports, weld deviations, inconsistent weld quality, and low production efficiency, this application provides a welding fixture with the following technical solution: a base with four first support seats, each with a first limiting unit for limiting the position of the support, and a second limiting unit for limiting the position of the main frame.

[0006] In one specific implementation, the first limiting unit includes a first positioning seat disposed on a first support seat, the first positioning seat being provided with a first positioning post that matches the secondary positioning hole, the bracket being mounted on the first positioning seat and the first positioning post passing through the secondary positioning hole.

[0007] In one specific implementation scheme, the first support base is provided with a first telescopic cylinder, the first positioning post is located at the output end of the first telescopic cylinder, and the first positioning post passes through the first positioning base and the secondary positioning hole in sequence.

[0008] In one specific implementation scheme, the base is provided with a push-pull cylinder, the output end of the push-pull cylinder is provided with a push-support frame, the push-support frame is provided with a push-support block, and the end face of the push-support block facing the bracket contacts the bracket.

[0009] In one specific implementation, the base is provided with a guide rail, and a guide block that matches the guide rail is slidably connected on the guide rail, and the push bracket is disposed on the guide block.

[0010] In one specific implementation, the base is provided with a mounting bracket, the mounting bracket is provided with a second telescopic cylinder, the output end of the second telescopic cylinder is rotatably connected to a first pressure block, the first pressure block is rotatably connected to the mounting bracket through a first rotating shaft, and the bracket is pressed against the first pressure block and the first positioning seat.

[0011] In one specific implementation, the second limiting unit includes a second support seat disposed on the base, a second positioning seat disposed on the second support seat, a second positioning post disposed on the second positioning seat that matches the main positioning hole, and a limiting groove that matches the main frame opened on the surface of the second support seat away from the base, the main frame being mounted in the limiting groove and the second positioning post passing through the main positioning hole.

[0012] In one specific implementation scheme, the second support base is provided with a third telescopic cylinder, the output end of which is rotatably connected to a second pressure block. The second pressure block is rotatably connected to the second support base through a second rotating shaft, and the main frame is pressed against the bottom of the second pressure block and the limiting groove.

[0013] In one specific implementation scheme, the push-back frame is provided with a third support seat, and the third support seat has a positioning groove on the surface opposite to the base, and the main frame is mounted on the positioning groove.

[0014] In one specific implementation scheme, the push-back frame is provided with a fourth telescopic cylinder, the output end of the fourth telescopic cylinder is rotatably connected to a third pressure block, the third pressure block is rotatably connected to the push-back frame through a third rotating shaft, and the main frame is pressed against the bottom of the positioning groove between the third pressure block and the bottom of the groove.

[0015] In summary, this application has the following beneficial technical effects: When the main frame and two supports need to be welded into a finished seat frame, the four supports are respectively mounted on the first support base, and the position of the supports is limited by the first limiting unit. Then, the main frame is mounted on the supports, and the position of the main frame is limited by the second limiting unit. Then, the operator uses welding equipment to weld the contact surfaces between the main frame and the four supports. Since the position of each component to be welded is fixed during welding, it is convenient for the operator to perform welding operations. At the same time, it is not easy for the components to shake during the welding process, which improves the weld quality and production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the seat cushion frame in related technologies.

[0017] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0018] Figure 3 This is a structural schematic diagram illustrating the second positioning post in an embodiment of this application.

[0019] Figure 4 yes Figure 2 Enlarged diagram of point A in the middle.

[0020] Figure 5 yes Figure 2 Enlarged diagram of point B in the middle.

[0021] Figure 6 yes Figure 3 Enlarged diagram of point C in the middle.

[0022] Reference numerals: 1. Main frame; 2. Support; 3. Bracket; 4. Connecting plate; 5. Main positioning hole; 6. Secondary positioning hole; 7. Base; 8. First support seat; 9. First positioning seat; 10. First positioning post; 11. First telescopic cylinder; 12. Push-pull cylinder; 13. Pushing frame; 14. Pushing block; 15. Guide rail; 16. Mounting bracket; 17. Second telescopic cylinder; 18. First pressure block; 19. First rotating shaft; 20. Second support seat; 21. Second positioning post; 22. Limiting groove; 23. Third telescopic cylinder; 24. Second pressure block; 25. Second rotating shaft; 26. Third support seat; 27. Positioning groove; 28. Fourth telescopic cylinder; 29. ​​Third pressure block; 30. Third rotating shaft; 31. Welding hole. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 2-6 This application will be described in further detail.

[0024] This application discloses a welding fixture.

[0025] Reference Figure 2 and Figure 3The welding fixture includes a base 7 with several welding holes 31 for the welding ends of the welding gun to pass through. Four first support seats 8 are bolted to the base 7, each with a first limiting unit for positioning the brackets 3. A second limiting unit for positioning the main frame 1 is also provided on the base 7. Therefore, when the main frame 1 and two supports 2 need to be welded into a seat frame, the four brackets 3 are respectively mounted on the first support seats 8, and the first limiting units are used to position the brackets 3. Then, the main frame 1 is mounted on the brackets 3, and the second limiting units are used to position the main frame 1. The operator then uses welding equipment to weld the contact surfaces between the main frame 1 and the four brackets 3. Because the positions of the components to be welded are fixed during welding, it facilitates the welding operation and prevents shaking between components during the welding process, thus improving weld quality and production efficiency.

[0026] Reference Figure 2 and Figure 4 The first limiting unit includes a first positioning seat 9 bolted to a first support base 8. A first positioning post 10, matching the size of the secondary positioning hole 6, is provided on the first positioning seat 9. The bracket 3 is mounted on the first positioning seat 9, and the first positioning post 10 passes through the secondary positioning hole 6. The first positioning post 10 limits the position of the secondary positioning hole 6, reducing the possibility of the bracket 3 shifting position and improving the stability of the bracket 3 mounted on the first positioning seat 9. In this embodiment, the surface of the first positioning post 10 facing away from the base 7 has a chamfer. The chamfer reduces the risk of the sharp edge of the first positioning post 10 damaging the bracket 3 while also serving a guiding function, facilitating the smooth passage of the first positioning post 10 through the secondary positioning hole 6. A vertically arranged first telescopic cylinder 11 is bolted to the first support base 8. The first positioning post 10 is installed at the output end of the first telescopic cylinder 11, and passes through the first positioning seat 9 and the secondary positioning hole 6 in sequence.

[0027] Therefore, when the bracket 3 is mounted on the first positioning seat 9, the first telescopic cylinder 11 is activated, which drives the first positioning pin 10 at the output end of the first telescopic cylinder 11 to pass through the secondary positioning hole 6, thereby limiting the position of the bracket 3. When the seat frame workpiece needs to be removed after welding, the first telescopic cylinder 11 is activated, which drives the first positioning pin 10 at the output end of the first telescopic cylinder 11 to retract, making it easier for the operator to remove the seat frame workpiece.

[0028] Reference Figure 2 and Figure 4A mounting bracket 16 is bolted to the base 7, and a second telescopic cylinder 17 is bolted to the mounting bracket 16. A first pressure block 18 is rotatably connected to the output end of the second telescopic cylinder 17. The first pressure block 18 is rotatably connected to the mounting bracket 16 via a first rotating shaft 19. The bracket 3 is pressed against the first pressure block 18 and the first positioning seat 9. Therefore, activating the second telescopic cylinder 17 causes the first pressure block 18 at its output end to press down, pressing the bracket 3 against the first pressure block 18 and the first positioning seat 9. In this embodiment, the number and position of the second telescopic cylinders 17 can be adjusted according to the actual site conditions. The first pressure block 18 further fixes the position of the bracket 3, further reducing the possibility of the bracket 3 shaking during welding.

[0029] Reference Figure 2 and Figure 5 The second limiting unit includes a second support seat 20 bolted to the base 7. A second positioning seat is bolted to the second support seat 20. The second positioning seat is provided with a second positioning post 21 that matches the size of the main positioning hole 5. In this embodiment, the second positioning post 21 can be configured as telescopic, corresponding to the structure of the first positioning post 10, according to the actual site conditions. A limiting groove 22 matching the size of the main frame 1 is opened on the surface of the second support seat 20 facing away from the base 7. The main frame 1 is mounted in the limiting groove 22, and the second positioning post 21 passes through the main positioning hole 5. The second positioning post 21 limits the position of the main positioning hole 5, and the limiting groove 22 limits the position of the main frame 1, reducing the possibility of the main frame 1 shifting position and improving the stability of the main frame 1 mounted in the second positioning seat and the limiting groove 22.

[0030] Reference Figure 2 and Figure 5 A third telescopic cylinder 23 is bolted to the second support base 20. A second pressure block 24 is rotatably connected to the output end of the third telescopic cylinder 23. The second pressure block 24 is rotatably connected to the second support base 20 via a second rotating shaft 25. The main frame 1 is pressed against the bottom of the second pressure block 24 and the limiting groove 22. Therefore, activating the third telescopic cylinder 23 causes the second pressure block 24 at its output end to press down, pressing the main frame 1 against the bottom of the limiting groove 22. In this embodiment, the number and position of the third telescopic cylinder 23 can be adjusted according to the actual site conditions. The second pressure block 24 further fixes the position of the main frame 1, further reducing the possibility of the main frame 1 shaking during welding.

[0031] Reference Figure 2 and Figure 6A horizontally arranged push-pull cylinder 12 is bolted to the base 7. In this embodiment, the number of push-pull cylinders 12 corresponds to the number of supports 2, with two cylinders. A push-support frame 13 is installed at the output end of the push-pull cylinder 12, and a push-support block 14 is bolted to the push-support frame 13. The end face of the push-support block 14 facing the support 3 contacts the support 3. A guide rail 15 is bolted to the base 7, and a guide block matching the size of the guide rail 15 is slidably connected to the guide rail 15. The push-support frame 13 is bolted to the guide block, and the guide rail 15 limits the movement direction of the guide block, improving the stability of the push-support frame 13 during movement. Therefore, activating the push-pull cylinder 12 moves the push-support frame 13 at the output end of the push-pull cylinder 12, bringing the end face of the push-support block 14 facing the support 3 into contact with the support 3, further reducing the possibility of the support 3 shaking during welding and improving the weld quality.

[0032] Reference Figure 2 and Figure 6 A third support seat 26 is bolted to the push-back frame 13. A positioning groove 27 is formed on the surface of the third support seat 26 facing away from the base 7. The main frame 1 is mounted on the positioning groove 27. The third support seat 26 supports the main frame 1, and the positioning groove 27 limits the position of the main frame 1, reducing the possibility of positional displacement. A fourth telescopic cylinder 28 is bolted to the push-back frame 13. A third pressure block 29 is rotatably connected to the output end of the fourth telescopic cylinder 28. The third pressure block 29 is rotatably connected to the push-back frame 13 via a third rotating shaft 30. The main frame 1 is pressed against the third pressure block 29 and the bottom of the positioning groove 27. Therefore, activating the fourth telescopic cylinder 28 causes the third pressure block 29 at its output end to press down, pressing the main frame 1 against the bottom of the positioning groove 27. The third pressure block 29 further fixes the position of the main frame 1, improving its stability.

[0033] The implementation principle of this application embodiment is as follows: When it is necessary to weld the main frame 1 and two supports 2 into a finished seat cushion skeleton, four supports 3 are respectively mounted on the first support seat 8. The first telescopic cylinder 11 is activated, which drives the first positioning pin 10 at the output end of the first telescopic cylinder 11 to pass through the secondary positioning hole 6. The push-pull cylinder 12 is activated, which drives the push-support bracket 13 at the output end of the push-pull cylinder 12 to move, so that the push-support block 14 is in contact with the end face of the support 3. The second telescopic cylinder 17 is activated, which drives the first pressure block 18 at the output end of the second telescopic cylinder 17 to press down, pressing the support 3 between the first pressure block 18 and the first positioning seat 9, thereby fixing the position of the support 3. Then, the main frame 1 is mounted on the top of the support 3, and the main frame 1 is mounted in the limiting groove 22 and The second positioning post 21 passes through the main positioning hole 5. The third telescopic cylinder 23 is activated, which drives the second pressure block 24 at the output end of the third telescopic cylinder 23 to press down, pressing the main frame 1 against the bottom of the second pressure block 24 and the limiting groove 22. The fourth telescopic cylinder 28 is activated, which drives the third pressure block 29 at the output end of the fourth telescopic cylinder 28 to press down, pressing the main frame 1 against the bottom of the third pressure block 29 and the positioning groove 27, thereby limiting the position of the main frame 1. Then, the operator uses welding equipment to weld the contact surfaces between the main frame 1 and the four supports 3. Since the position of each component to be welded is fixed during welding, it is convenient for the operator to perform welding operations. At the same time, it is not easy for the components to shake during the welding process, which improves the weld quality and production efficiency.

[0034] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A welding fixture, characterized in that: Includes a base (7), on which four first support seats (8) are provided, and each of the four first support seats (8) is provided with a first limiting unit for limiting the position of the bracket (3), and the base (7) is provided with a second limiting unit for limiting the position of the main frame (1).

2. The welding fixture according to claim 1, characterized in that: The first limiting unit includes a first positioning seat (9) disposed on the first support seat (8), and the first positioning seat (9) is provided with a first positioning post (10) that matches the secondary positioning hole (6). The bracket (3) is mounted on the first positioning seat (9) and the first positioning post (10) passes through the secondary positioning hole (6).

3. The welding fixture according to claim 2, characterized in that: The first support base (8) is provided with a first telescopic cylinder (11), and the first positioning post (10) is located at the output end of the first telescopic cylinder (11). The first positioning post (10) passes through the first positioning base (9) and the secondary positioning hole (6) in sequence.

4. The welding fixture according to claim 1, characterized in that: The base (7) is provided with a push-pull cylinder (12), the output end of the push-pull cylinder (12) is provided with a push-support frame (13), the push-support frame (13) is provided with a push-support block (14), and the end face of the push-support block (14) facing the bracket (3) contacts the bracket (3).

5. The welding fixture according to claim 4, characterized in that: The base (7) is provided with a guide rail (15), and a guide block matching the guide rail (15) is slidably connected on the guide rail (15). The push bracket (13) is set on the guide block.

6. The welding fixture according to claim 1, characterized in that: The base (7) is provided with a mounting bracket (16), and the mounting bracket (16) is provided with a second telescopic cylinder (17). The output end of the second telescopic cylinder (17) is rotatably connected to a first pressure block (18). The first pressure block (18) is rotatably connected to the mounting bracket (16) through a first rotating shaft (19). The bracket (3) is pressed between the first pressure block (18) and the first positioning seat (9).

7. The welding fixture according to claim 1, characterized in that: The second limiting unit includes a second support seat (20) disposed on the base (7), a second positioning seat is provided on the second support seat (20), a second positioning post (21) matching the main positioning hole (5) is provided on the second positioning seat, and a limiting groove (22) matching the main frame (1) is opened on the surface of the second support seat (20) away from the base (7), the main frame (1) is mounted in the limiting groove (22) and the second positioning post (21) passes through the main positioning hole (5).

8. The welding fixture according to claim 7, characterized in that: The second support base (20) is provided with a third telescopic cylinder (23). The output end of the third telescopic cylinder (23) is rotatably connected to a second pressure block (24). The second pressure block (24) is rotatably connected to the second support base (20) through a second rotating shaft (25). The main frame (1) is pressed against the bottom of the second pressure block (24) and the limiting groove (22).

9. The welding fixture according to claim 4, characterized in that: The push-back frame (13) is provided with a third support seat (26), and the third support seat (26) has a positioning groove (27) on the surface away from the base (7), and the main frame (1) is mounted on the positioning groove (27).

10. The welding fixture according to claim 9, characterized in that: The push-back frame (13) is provided with a fourth telescopic cylinder (28), and the output end of the fourth telescopic cylinder (28) is rotatably connected to a third pressure block (29). The third pressure block (29) is rotatably connected to the push-back frame (13) through a third rotating shaft (30), and the main frame (1) abuts against the bottom of the third pressure block (29) and the positioning groove (27).

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