Chair leg welding fixture

Abstract

The utility model discloses a chair leg welding fixture, including bottom plate, bottom plate top front end is fixedly connected with a pair of front support board, bottom plate both sides all are fixedly connected with two side support boards, and the top outside of same side two side support boards is fixedly connected with same mounting plate, be provided with lower chair leg retaining structure between front support board and bottom plate, lower chair leg retaining structure is used for fixing the position of first chair leg, be provided with upper chair leg retaining structure between front support board and side support board, upper chair leg retaining structure is used for fixing the position of second chair leg, still be provided with connecting frame retaining structure on front support board, and connecting frame retaining structure is used for fixing the position of chair leg connecting frame, and the preliminary retaining mechanism is used for fixing first chair leg and second chair leg on the front support board, the utility model makes first chair leg, second chair leg and the position positioning fixed of chair leg connecting frame, and the welding quality of chair leg is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of chair leg clamping technology, specifically a chair leg welding clamp. Background Technology

[0002] A chair is a piece of everyday furniture, consisting of a backrest, seat cushion, frame, and legs. Modern chairs emphasize aesthetics and style, and some chairs are no longer just for seating; with the integration of technology, they make human life more convenient.

[0003] The existing chair legs mainly consist of two U-shaped chair legs and a connecting frame that connects the two chair legs. The connecting frame and the chair legs need to be fixed by welding. Generally, manual welding is used to weld the connecting frame and the two chair legs one by one. This welding method has low production efficiency and is prone to risks such as weld seam breakage due to loose fixing. In addition, the consistency of chair leg welding production is poor. Therefore, it is necessary to design a chair leg welding fixture to improve the above problems. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a chair leg welding fixture, which aims to solve the problem that in the prior art, manual welding between the connecting frame and the two chair legs is prone to weld seam breakage due to loose fixing and poor welding production consistency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A chair leg welding fixture includes a base plate, a pair of front support plates fixedly connected to the top front end of the base plate, two side support plates fixedly connected to both sides of the base plate, and a common mounting plate fixedly connected to the outer top of the two side support plates on the same side. A lower chair leg fixing structure is provided between the front support plate and the base plate to fix the position of a first chair leg. An upper chair leg fixing structure is provided between the front support plate and the side support plates to fix the position of a second chair leg. A connecting frame fixing structure is also provided on the front support plate to fix the position of a chair leg connecting frame. A preliminary fixing mechanism is also provided between the pair of front support plates to fix the first chair leg and the second chair leg to the front support plate.

[0007] Preferably, the lower chair leg fixing structure includes a lower receiving groove opened on the lower side of the front end of the front support plate and two pairs of lower positioning blocks respectively fixedly connected to the top sides of the base plate. Each pair of lower positioning blocks has two blocks. The lower positioning blocks have a lower positioning groove on their tops. The lower positioning blocks are located inside the side support plate. The first chair leg is placed inside the lower receiving groove of the pair of front support plates and the lower positioning groove of the two pairs of lower positioning blocks.

[0008] Preferably, the lower chair leg fixing structure further includes a first manual clamp disposed between each pair of two lower positioning blocks. The first manual clamp is fixedly connected to the base plate and is used to press and fix the first chair leg.

[0009] Preferably, the upper chair leg fixing structure includes an upper receiving groove opened on the top of the front support plate and an upper positioning block fixedly connected to the inner side of each side support plate. The upper positioning block has an upper positioning groove on its top, and the second chair leg is placed inside the upper receiving groove of the pair of front support plates and the upper positioning groove of the upper positioning block.

[0010] Preferably, the upper chair leg fixing structure further includes a second manual clamp disposed between two upper positioning blocks on the same side. The second manual clamp is fixedly connected to the mounting plate and is used to press and fix the second chair leg.

[0011] Preferably, the connecting frame fixing structure includes a third manual clamp fixedly connected to the inner side of a pair of front support plates, the third manual clamp being used to press and fix the chair leg connecting frame.

[0012] Preferably, the back of the front support plate is provided with a guide groove communicating with the lower and upper receiving grooves. The initial fixing mechanism includes a movable rod slidably installed inside each guide groove. A pressure block is fixedly connected to one end of the movable rod near the lower and upper receiving grooves. A groove for accommodating the pressure block is provided at one end of the guide groove communicating with the lower and upper receiving grooves. One end of multiple movable rods extends to the outside of the guide groove and is fixedly connected to a connecting frame. A fixing plate is fixedly connected between a pair of front support plates. A threaded sleeve is rotatably connected to the fixing plate. A threaded rod is fixedly connected to the front end of the connecting frame. The threaded sleeve is threadedly connected to the outside of the threaded rod. An adjusting wheel is fixedly connected to the outside of the threaded sleeve.

[0013] Preferably, a reinforcing rib is fixedly connected between the outer side of the side support plate and the bottom plate.

[0014] Preferably, a fixing frame is fixedly connected to the bottom of the base plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention places the first and second chair legs on the front support plate and initially fixes them using a preliminary fixing mechanism. Then, the first chair leg is fixed in position using a lower chair leg fixing structure, and the second chair leg is fixed in position using an upper chair leg fixing structure. After assembling the two chair leg connecting frames with the first and second chair legs, the chair leg connecting frames are fixed in position using a connecting frame fixing structure. Finally, the chair leg connecting frames are welded to the first and second chair legs. This process ensures that the positions of the first chair leg, the second chair leg, and the chair leg connecting frames are fixed, greatly improving the welding quality of the chair legs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the chair leg welding fixture;

[0018] Figure 2 A schematic diagram of the welding fixture for the chair legs;

[0019] Figure 3 This is a preliminary schematic diagram of the retaining mechanism.

[0020] In the diagram: 1. Base plate; 2. Fixing frame; 3. Front support plate; 301. Lower receiving groove; 302. Upper receiving groove; 303. Guide groove; 4. Lower positioning block; 401. Lower positioning groove; 5. First manual clamp; 6. Side support plate; 7. Mounting plate; 8. Upper positioning block; 801. Upper positioning groove; 9. Second manual clamp; 10. Third manual clamp; 11. Initial fixing mechanism; 1101. Connecting frame; 1102. Moving rod; 1103. Pressure block; 1104. Fixing plate; 1105. Threaded rod; 1106. Threaded sleeve; 1107. Adjusting wheel; A. First chair leg; B. Second chair leg; C. Chair leg connecting frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figure 1 The chair leg to be welded consists of a first chair leg A, a second chair leg B, and two chair leg connecting frames C located between the first chair leg A and the second chair leg B. The two chair leg connecting frames C are welded and fixed to the first chair leg A and the second chair leg B.

[0023] Please see Figures 1-3This embodiment provides a chair leg welding fixture, including a base plate 1. A pair of front support plates 3 are fixedly connected to the top front end of the base plate 1. Two side support plates 6 are fixedly connected to both sides of the base plate 1. The front support plates 3 and the side support plates 6 are welded and fixed to the base plate 1. A common mounting plate 7 is fixedly connected to the outer side of the top of the two side support plates 6 on the same side. The mounting plate 7 is fixed to the side support plates 6 by bolts. A lower chair leg fixing structure is provided between the front support plate 3 and the base plate 1. The lower chair leg fixing structure is used to fix the position of the first chair leg A. An upper chair leg fixing structure is provided between the front support plate 3 and the side support plates 6. The upper chair leg fixing structure is used to fix the position of the second chair leg B. A connecting frame fixing structure is also provided on the front support plate 3. The connecting frame fixing structure is used to fix the chair leg connecting frame C. In addition, a preliminary fixing mechanism 11 is provided between the pair of front support plates 3. The preliminary fixing mechanism 11 is used to fix the first chair leg A and the second chair leg B on the front support plate 3. The first chair leg A and the second chair leg B are placed on the front support plate 3 and initially fixed by the preliminary fixing mechanism 11. Then, the position of the first chair leg A is fixed by the lower chair leg fixing structure and the position of the second chair leg B is fixed by the upper chair leg fixing structure. After the two chair leg connecting frames C are assembled with the first chair leg A and the second chair leg B, the position of the chair leg connecting frames C is fixed by the connecting frame fixing structure. Then, the chair leg connecting frames C are welded to the first chair leg A and the second chair leg B, so that the positions of the first chair leg A, the second chair leg B and the chair leg connecting frames C are fixed, which greatly improves the welding quality of the chair legs.

[0024] In this embodiment, as Figure 1 and Figure 2 As shown, the lower chair leg fixing structure includes a lower receiving groove 301 opened on the lower side of the front end of the front support plate 3 and two pairs of lower positioning blocks 4 respectively fixedly connected to the top sides of the base plate 1. The lower positioning blocks 4 are fixed to the base plate 1 by bolts. Each pair of lower positioning blocks 4 has two blocks. The top of the lower positioning block 4 is provided with a lower positioning groove 401. The lower positioning blocks 4 are located inside the side support plate 6. The first chair leg A is placed inside the lower receiving groove 301 of a pair of front support plates 3 and the lower positioning groove 401 of the two pairs of lower positioning blocks 4. The lower chair leg fixing structure also includes a first manual clamp 5 disposed between each pair of two lower positioning blocks 4. The first manual clamp 5 is fixedly connected to the base plate 1. On plate 1, the first manual clamp 5 is fixed to the base plate 1 by bolts. The first manual clamp 5 is used to press and fix the first chair leg A. The middle position of the first chair leg A is placed inside the lower receiving groove 301 of the front support plate 3, and the two ends of the first chair leg A are respectively placed inside the lower positioning grooves 401 of the two pairs of lower positioning blocks 4 to position the first chair leg A. Then, the two first manual clamps 5 are locked to fix the positions of the two ends of the first chair leg A. The first manual clamp 5 is placed between the two pairs of lower positioning blocks 4 so that when the first manual clamp 5 presses the first chair leg A, the two lower positioning blocks 4 can act as supports to improve the fixation effect of the first chair leg A.

[0025] In this embodiment, as Figure 1 and Figure 2 As shown, the upper chair leg fixing structure includes an upper receiving groove 302 opened on the top of the front support plate 3 and an upper positioning block 8 fixedly connected to the inner side of each side support plate 6. The upper positioning block 8 is fixedly connected to the side support plate 6 by bolts. The top of the upper positioning block 8 is provided with an upper positioning groove 801. The second chair leg B is placed inside the upper receiving groove 302 of a pair of front support plates 3 and the upper positioning groove 801 of the upper positioning block 8. The upper chair leg fixing structure also includes a second manual clamp 9 disposed between the two upper positioning blocks 8 on the same side. The second manual clamp 9 is fixedly connected to the mounting plate 7. The second manual clamp 9 and the mounting plate 7 are connected by... The second chair leg B is fixed by bolt connection. The second manual clamp 9 is used to press and fix the second chair leg B. The middle position of the second chair leg B is placed inside the upper receiving groove 302 of the front support plate 3. The two ends of the second chair leg B are respectively placed inside the upper positioning grooves 801 of the two upper positioning blocks 8 on both sides to position the second chair leg B. Then, the two second manual clamps 9 are locked to fix the positions of the two ends of the second chair leg B. The second manual clamp 9 is placed between the two upper positioning blocks 8 on the same side so that when the second manual clamp 9 presses the second chair leg B, the two upper positioning blocks 8 can act as supports to improve the fixation effect of the second chair leg B.

[0026] In this embodiment, as Figure 1 As shown, the connecting frame fixing structure includes a third manual clamp 10 fixedly connected to the inner side of a pair of front support plates 3. The third manual clamp 10 is fixed to the front support plate 3 by bolts. The third manual clamp 10 is used to press and fix the chair leg connecting frame C. After the first chair leg A and the second chair leg B are fixed in position, the two chair leg connecting frames C are respectively assembled with the first chair leg A and the second chair leg B close to the inner side of the front support plate 3. Then, by locking the two third manual clamps 10, the two chair leg connecting frames C are fixed on the front support plate 3, and the position of the chair leg connecting frame C is fixed.

[0027] In this embodiment, as Figure 2 and Figure 3As shown, the back of the front support plate 3 has a guide groove 303 communicating with the lower receiving groove 301 and the upper receiving groove 302. The preliminary fixing mechanism 11 includes a moving rod 1102 slidably installed inside each guide groove 303. A pressure block 1103 is fixedly connected to one end of the moving rod 1102 near the lower receiving groove 301 and the upper receiving groove 302. The diameter of the pressure block 1103 is larger than the diameter of the moving rod 1102. The pressure block 1103 is preferably made of rubber. The guide groove 303 communicates with the lower receiving groove 301 and the upper receiving groove 302. 2. A groove for accommodating the pressure block 1103 is provided at one end of the connecting rods 1102. One end of each moving rod 1102 extends to the outside of the guide groove 303 and is fixedly connected to the connecting frame 1101. The moving rods 1102 are welded to the connecting frame 1101. A fixing plate 1104 is fixedly connected between a pair of front support plates 3. A threaded sleeve 1106 is rotatably connected to the fixing plate 1104. A threaded rod 1105 is fixedly connected to the front end of the connecting frame 1101. The threaded sleeve 1106 is threaded to the outside of the threaded rod 1105. An adjusting wheel 1107 is fixedly connected to the outer side of the threaded sleeve 1106. When the first chair leg A is placed in the lower receiving groove 301 of the front support plate 3 and the second chair leg B is placed in the upper receiving groove 302 of the front support plate 3, rotating the adjusting wheel 1107 drives the threaded sleeve 1106 to rotate, causing the threaded sleeve 1106 to rotate outside the threaded rod 1105. This causes the threaded rod 1105 to move axially within the threaded sleeve 1106, and the threaded rod 1105 drives the connecting frame 1101 to move and adjust its position. 1101 moves forward support plate 3, causing connecting frame 1101 to drive moving rod 1102 to move, extending pressure block 1103 into the lower receiving groove 301 and upper receiving groove 302. Pressure block 1103 presses the first chair leg A into the front end of the lower receiving groove 301 and the second chair leg B into the front end of the upper receiving groove 302. On the one hand, it can initially fix the position of the first chair leg A and the second chair leg B, and on the other hand, it can ensure the consistency of the fixed position of the first chair leg A and the second chair leg B, and improve the welding effect.

[0028] In this embodiment, as Figure 1 As shown, a reinforcing rib is fixedly connected between the outer side of the side support plate 6 and the bottom plate 1. The reinforcing rib is welded and fixed to the side support plate 6 and the bottom plate 1, thereby improving the structural strength of the side support plate 6.

[0029] In this embodiment, as Figure 1 As shown, a fixed frame 2 is fixedly connected to the bottom of the base plate 1. The fixed frame 2 is welded and fixed to the base plate 1. The fixed frame 2 supports the base plate 1. Each of the four legs of the fixed frame 2 is provided with a fixing block. The fixing block is provided with an installation hole. The fixed frame 2 is fixed to the ground of the working area by passing the anchor bolt through the installation hole.

[0030] Working principle: In use, the middle position of the first chair leg A is placed inside the lower receiving groove 301 of the front support plate 3, and the two ends of the first chair leg A are respectively placed inside the lower positioning grooves 401 of the two pairs of lower positioning blocks 4, thus positioning the first chair leg A. Then, the middle position of the second chair leg B is placed inside the upper receiving groove 302 of the front support plate 3, and the two ends of the second chair leg B are respectively placed inside the upper positioning grooves 801 of the two upper positioning blocks 8 on both sides, thus positioning the second chair leg B. By rotating the adjusting wheel 1107, the threaded sleeve 1106 is driven to rotate, so that the threaded sleeve 1106 rotates outside the threaded rod 1105, thereby causing the threaded rod 1105 to move axially within the threaded sleeve 1106. The threaded rod 1105 drives the connecting frame 1101 to move and adjust its position, moving the connecting frame 1101 to the front support plate 3, so that the connecting frame 1101 drives the moving rod 1102 to move, extending the pressure block 1103 into the lower receiving groove 301 and the upper receiving groove 302. The first chair leg A is pressed into the inner front end of the lower receiving groove 301 by the pressure block 1103, and the second chair leg B is pressed into the inner front end of the upper receiving groove 302, thus initially fixing the positions of the first chair leg A and the second chair leg B. Then, the two first manual clamps 5 are locked to fix the positions of the two ends of the first chair leg A, and the two second manual clamps 9 are locked to fix the positions of the two ends of the second chair leg B, thereby fixing the positions of the first chair leg A and the second chair leg B. After the positions of the first chair leg A and the second chair leg B are fixed, the two chair leg connecting frames C are respectively assembled with the first chair leg A and the second chair leg B by tightly adhering to the inner side of the front support plate 3. Then, the two chair leg connecting frames C are fixed to the front support plate 3 by locking the two third manual clamps 10, thus fixing the positions of the chair leg connecting frames C. Then, the welding work of the chair leg connecting frames C with the first chair leg A and the second chair leg B is carried out, so that the positions of the first chair leg A, the second chair leg B and the chair leg connecting frames C are fixed, which greatly improves the welding quality of the chair legs.

[0031] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A chair leg welding fixture, characterized in that: The system includes a base plate (1), a pair of front support plates (3) fixedly connected to the top front end of the base plate (1), two side support plates (6) fixedly connected to both sides of the base plate (1), and the same mounting plate (7) fixedly connected to the outer top of the two side support plates (6) on the same side. A lower chair leg fixing structure is provided between the front support plate (3) and the base plate (1), and the lower chair leg fixing structure is used to fix the position of the first chair leg (A). An upper chair leg fixing structure is provided between the front support plate (3) and the side support plates (6), and the upper chair leg fixing structure is used to fix the position of the second chair leg (B). A connecting frame fixing structure is also provided on the front support plate (3), and the connecting frame fixing structure is used to fix the position of the chair leg connecting frame (C). A preliminary fixing mechanism (11) is also provided between the pair of front support plates (3), and the preliminary fixing mechanism (11) is used to fix the first chair leg (A) and the second chair leg (B) on the front support plate (3).

2. The chair leg welding fixture according to claim 1, characterized in that: The lower chair leg fixing structure includes a lower receiving groove (301) opened on the lower side of the front end of the front support plate (3) and two pairs of lower positioning blocks (4) respectively fixedly connected to the top sides of the bottom plate (1). Each pair of lower positioning blocks (4) is provided with two. The lower positioning blocks (4) are provided with a lower positioning groove (401) on the top. The lower positioning blocks (4) are located inside the side support plate (6). The first chair leg (A) is placed inside the lower receiving groove (301) of the pair of front support plates (3) and the lower positioning groove (401) of the two pairs of lower positioning blocks (4).

3. A chair leg welding fixture according to claim 2, characterized in that: The lower chair leg fixing structure also includes a first manual clamp (5) disposed between each pair of two lower positioning blocks (4). The first manual clamp (5) is fixedly connected to the base plate (1) and is used to press and fix the first chair leg (A).

4. A chair leg welding fixture according to claim 1, characterized in that: The upper chair leg fixing structure includes an upper receiving groove (302) opened on the top of the front support plate (3) and an upper positioning block (8) fixedly connected to the inner side of each side support plate (6). The upper positioning block (8) has an upper positioning groove (801) opened on the top. The second chair leg (B) is placed inside the upper receiving groove (302) of the pair of front support plates (3) and the upper positioning groove (801) of the upper positioning block (8).

5. A chair leg welding fixture according to claim 4, characterized in that: The upper chair leg fixing structure also includes a second manual clamp (9) disposed between two upper positioning blocks (8) on the same side. The second manual clamp (9) is fixedly connected to the mounting plate (7) and is used to press and fix the second chair leg (B).

6. A chair leg welding fixture according to claim 1, characterized in that: The connecting frame fixing structure includes a third manual clamp (10) fixedly connected to the inner side of a pair of front support plates (3), the third manual clamp (10) being used to press and fix the chair leg connecting frame (C).

7. A chair leg welding fixture according to claim 1, characterized in that: The back of the front support plate (3) is provided with a guide groove (303) communicating with the lower receiving groove (301) and the upper receiving groove (302). The preliminary fixing mechanism (11) includes a moving rod (1102) slidably installed inside each guide groove (303). A pressure block (1103) is fixedly connected to one end of the moving rod (1102) near the lower receiving groove (301) and the upper receiving groove (302). The end of the guide groove (303) communicating with the lower receiving groove (301) and the upper receiving groove (302) is provided with a groove for accommodating the pressure block (1103). The groove has multiple movable rods (1102) extending one end to the outside of the guide groove (303) and being fixedly connected to a connecting frame (1101). A fixing plate (1104) is fixedly connected between a pair of front support plates (3). A threaded sleeve (1106) is rotatably connected to the fixing plate (1104). A threaded rod (1105) is fixedly connected to the front end of the connecting frame (1101). The threaded sleeve (1106) is threaded to the outside of the threaded rod (1105). An adjusting wheel (1107) is fixedly connected to the outside of the threaded sleeve (1106).

8. A chair leg welding fixture according to claim 1, characterized in that: A reinforcing rib is fixedly connected between the outer side of the side support plate (6) and the bottom plate (1).

9. A chair leg welding fixture according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to a fixing frame (2).

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