An adjustable front body assembly welding fixture

Abstract

The utility model discloses an adjustable front vehicle body assembly welding tool, including bottom plate, positioning mechanism and adjusting mechanism, the adjusting mechanism installs on the bottom plate, the positioning mechanism includes locating plate, connecting plate, locating column and adjusting screw thread cover, the locating plate is connected with adjusting mechanism, the connecting plate is fixedly connected with locating plate upper end, the locating column is worn in the connecting plate, the locating column is slidably connected with the connecting plate and is circumferentially jointed, the connecting plate is fixedly connected with the connecting sleeve, the adjusting screw thread cover is rotatably connected with the connecting sleeve and is axially jointed, the locating column is equipped with external thread, and the external thread is threadedly connected with adjusting screw thread cover.

Description

Technical Field

[0001] This utility model relates to the technical field of welding fixtures, specifically to an adjustable front body assembly welding fixture. Background Technology

[0002] Welding is a key process in the manufacturing of forklift front body assemblies. During welding, tooling is needed to position the two components correctly to ensure that the dimensional parameters of the welded workpiece meet requirements. Welding tooling is crucial for the welding process. Traditional front body assembly welding tooling often has many shortcomings; its structure is mostly fixed and lacks flexibility. It cannot be effectively adjusted when facing welding requirements for front body assemblies of different models or different batches of the same model.

[0003] Chinese utility model patent CN216298386U discloses a welding fixture for a forklift front frame, including a placement plate for placing welding parts and an air pump for blowing air onto the welding parts. The upper surface of the placement plate has a through hole for air passage. A fixing block for clamping the welding parts is fixedly connected to one side of the upper surface of the placement plate. A threaded clamp for clamping the welding parts is threaded through the upper surface of the fixing block. The upper surface of the placement plate has a clamping groove. With the inclusion of threaded clamps, sliders, clamping plates, threaded rods, spur gears, clamping components, circular plates, insertion holes, and a fixing structure, welders can place the workpiece on the placement plate. The threaded clamps then secure one end of the workpiece. Rotating the threaded rod pushes the slider within the clamping slot, thus clamping the other end of the workpiece to the clamping plate. The clamping component engages with the spur gear, preventing reverse rotation of the threaded rod and ensuring a secure clamping plate. This allows for easy clamping of workpieces of different sizes. The fixing structure, passing through the support frame and connecting to different insertion holes, allows the placement plate to be fixed at different angles, facilitating welding of various workpieces and enhancing usability during welding.

[0004] Currently, existing adjustable welding fixtures are designed for adjusting components located at the bottom, while components located at the top lack adjustable positioning measures, which cannot meet the needs of welding the front body of forklifts, resulting in inconvenience in adjustment. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide an adjustable front body assembly welding fixture, which includes a base plate, a positioning mechanism and an adjustment mechanism. This adjustable front body assembly welding fixture has the advantage of convenient adjustment.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] An adjustable front body assembly welding fixture includes a base plate, a positioning mechanism, and an adjustment mechanism. The adjustment mechanism is mounted on the base plate. The positioning mechanism includes a positioning plate, a connecting plate, a positioning post, and an adjusting threaded sleeve. The positioning plate is connected to the adjustment mechanism. The connecting plate is fixedly connected to the upper end of the positioning plate. The positioning post passes through the connecting plate and is slidably connected to the connecting plate and circumferentially engaged. The connecting plate is fixedly connected to a connecting sleeve. The adjusting threaded sleeve is rotatably connected to the connecting sleeve and axially engaged. The positioning post has an external thread, which is threadedly connected to the adjusting threaded sleeve.

[0008] Preferably, the positioning post is provided with a groove located at the external thread, the groove extending along the length of the positioning post, and the connecting plate is fixedly connected to a slider that is engaged in the groove.

[0009] Preferably, the positioning post is provided with a locking threaded sleeve, the external thread is threadedly connected to the locking threaded sleeve, and the locking threaded sleeve abuts against the adjusting threaded sleeve.

[0010] Preferably, the positioning plate is fixedly connected to a connecting frame, the connecting frame is provided with a positioning pin, the positioning pin is slidably connected to the connecting frame, and the connecting frame is provided with a locking component connected to the positioning pin.

[0011] Preferably, the locking assembly includes a locking plate, a screw, a first nut, and a second nut. The positioning pin is fixedly connected to the screw, the screw is threadedly connected to the first nut and the second nut, the locking plate is fixedly connected to the connecting frame, the screw passes through the locking plate, and the first nut and the second nut abut against both sides of the locking plate.

[0012] Preferably, a plastic ball is fixedly connected to the end of the screw away from the locating pin.

[0013] Preferably, the adjustment mechanism includes an adjustment base, a sliding block, a fixed plate, and a lead screw. The adjustment base and the fixed plate are both fixedly connected to the base plate. The sliding block is slidably connected to the adjustment base. The lead screw is rotatably connected to the sliding base and axially linked. The lead screw is threadedly connected to the fixed plate.

[0014] Preferably, the lead screw is fixedly connected to a handle.

[0015] Preferably, the adjusting base is fixedly connected to a workpiece support block located below the positioning plate.

[0016] Preferably, the positioning plate has an arc-shaped fitting surface.

[0017] Compared with the prior art, this utility model has achieved beneficial technical effects:

[0018] The position of the positioning plate is adjusted by an adjustment mechanism to accommodate front vehicle body bases of different sizes. The position of the positioning post is adjusted by rotating the adjusting threaded sleeve, allowing the positioning post above the positioning plate to accommodate front vehicle body panels of different sizes. This achieves positioning of both upper and lower components and allows for easy adjustment to meet the positioning needs of components of different sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an adjustable front body assembly welding fixture in an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the positioning mechanism and the adjustment mechanism in the embodiments of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the adjusting threaded sleeve and the locking threaded sleeve in the embodiment of this utility model.

[0022] The technical features referred to by the various reference numerals in the accompanying drawings are as follows:

[0023] 11. Base plate; 12. Adjustable base; 13. Sliding block; 14. Fixing plate; 15. Lead screw; 16. Handle; 17. Workpiece support block; 21. Positioning plate; 22. Connecting plate; 23. Adjusting threaded sleeve; 24. Locking threaded sleeve; 25. Mating surface; 26. Connecting ring; 31. Positioning pin; 32. External thread; 33. Slide groove; 34. Slider; 41. Connecting frame; 42. Positioning pin; 43. Locking plate; 44. Screw; 45. First nut; 46. Second nut; 47. Plastic ball. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. However, the scope of protection of this utility model is not limited to the specific embodiments described below.

[0025] refer to Figure 1-3 An adjustable front body assembly welding fixture includes a base plate 11, a positioning mechanism and an adjustment mechanism, wherein the adjustment mechanism is mounted on the base plate 11.

[0026] The adjustment mechanism includes an adjustment base 12, a sliding block 13, a fixed plate 14, and a lead screw 15. The adjustment base 12 and the fixed plate 14 are both fixedly connected to the base plate 11. The sliding block 13 is slidably connected to the adjustment base 12. The lead screw 15 is rotatably connected to the sliding block and axially linked. The lead screw 15 is threadedly connected to the fixed plate 14. A handle 16 is fixedly connected to the lead screw 15, facilitating rotation by the operator. A workpiece support block 17 located below the positioning plate 21 is fixedly connected to the adjustment base 12.

[0027] The positioning mechanism includes a positioning plate 21, a connecting plate 22, a positioning post 31, and an adjusting threaded sleeve 23. The positioning plate 21 is connected to the adjusting mechanism, and the connecting plate 22 is fixedly connected to the upper end of the positioning plate 21. The positioning post 31 passes through the connecting plate 22, and the positioning post 31 is slidably connected to the connecting plate 22 and circumferentially engaged. A connecting sleeve is fixedly connected to the connecting plate 22, and the adjusting threaded sleeve 23 is rotatably connected to the connecting sleeve and axially engaged. The positioning post 31 has an external thread 32, which is threadedly connected to the adjusting threaded sleeve 23. The positioning post 31 has a groove 33 located at the external thread 32, which extends along the length of the positioning post 31. A slider 34 that engages with the groove 33 is fixedly connected to the connecting plate 22. A locking threaded sleeve 24 passes through the positioning post 31, and the external thread 32 is threadedly connected to the locking threaded sleeve 24, which abuts against the adjusting threaded sleeve 23. The positioning plate 21 has an arc-shaped contact surface 25. The connecting plate 22 is fixedly connected to the connecting ring 26, which is rotatably connected to the adjusting threaded sleeve 23. The connecting ring 26 enables the adjusting threaded sleeve 23 to be rotatably connected to the connecting sleeve and axially engaged.

[0028] A connecting frame 41 is fixedly connected to a positioning plate 21. A positioning pin 42 passes through the connecting frame 41 and is slidably connected to the connecting frame 41. The connecting frame 41 is provided with a locking assembly connected to the positioning pin 42. The locking assembly includes a locking plate 43, a screw 44, a first nut 45, and a second nut 46. The positioning pin 42 is fixedly connected to the screw 44, and the screw 44 is threadedly connected to the first nut 45 and the second nut 46. The locking plate 43 is fixedly connected to the connecting frame 41, and the screw 44 passes through the locking plate 43. The first nut 45 and the second nut 46 abut against both sides of the locking plate 43. A plastic ball 47 is fixedly connected to the end of the screw 44 away from the positioning pin 42.

[0029] During the welding process of the forklift front body welding assembly, the front body base needs to be placed below and the front body panel needs to be placed above the front body base. Then, welding is performed at the contact point between the front body base and the front body panel.

[0030] When using this adjustable front body assembly welding fixture, the front body base is placed on the base plate 11, and the front body panel is moved until it engages with the positioning plate 21, thereby enabling the front body base to be positioned by the positioning plate 21. The front body panel is then placed on the front body base and moved until it engages with the positioning post 31, thereby enabling the front body panel to be positioned by the positioning post 31, ensuring accurate welding of the front body panel on the front body base. This achieves the function of positioning the front body base and the front body panel.

[0031] This embodiment has the following advantages:

[0032] When the adjusting threaded sleeve 23 is rotated, the positioning pin 31 is circumferentially engaged with the connecting plate 22. The positioning pin 31 will not rotate with the adjusting threaded sleeve 23, but will instead move linearly along its length under the action of the thread, thus adjusting the position of the positioning pin 31. The sliding groove 33 on the positioning pin 31 and the slider 34 on the connecting plate 22 cooperate to further ensure the stability of the positioning pin 31 during sliding, preventing circumferential rotation of the positioning pin 31 during adjustment and thus affecting the positioning effect.

[0033] The position of the positioning plate 21 is adjusted by the adjustment mechanism to accommodate front vehicle body bases of different sizes. The position of the positioning post 31 is adjusted by rotating the adjusting threaded sleeve 23, allowing the positioning post 31 located above the positioning plate 21 to accommodate front vehicle body panels of different sizes. This achieves positioning of both upper and lower components and allows for easy adjustment to accommodate the positioning needs of components of different sizes.

[0034] The slider 34 is engaged in the groove 33, which not only prevents the positioning column 31 from rotating circumferentially during the adjustment process, but also guides the positioning column 31 when it moves linearly along its length, making the movement of the positioning column 31 more stable and precise.

[0035] After adjusting the position of the positioning post 31, tighten the locking threaded sleeve 24 to make it abut against the adjusting threaded sleeve 23. This prevents the adjusting threaded sleeve 23 from rotating due to vibration or other reasons during the welding process, thereby ensuring that the position of the positioning post 31 remains fixed and ensuring the accuracy and stability of the front body panel positioning.

[0036] The positioning pin 42 can slide on the connecting bracket 41 to the front body panel, so that the positioning pin 42 can be inserted into the preset positioning hole on the front body panel, which can further improve the positioning accuracy of the front body panel.

[0037] By tightening the first nut 45 and the second nut 46, which abut against both sides of the locking plate 43 respectively, the screw 44 can be fixed on the locking plate 43, thereby locking the positioning pin 42.

[0038] The plastic ball 47 allows the operator to easily hold and operate the screw 44, avoiding the discomfort caused by direct contact between the hand and the screw 44 when adjusting the positioning pin 42. This increases the comfort and stability of operation and facilitates the adjustment of the position of the positioning pin 42.

[0039] When the lead screw 15 is rotated, it moves axially while rotating because it is threadedly connected to the fixed plate 14. This causes the sliding block 13, which is axially linked to the lead screw 15, to slide on the adjusting base 12, thereby adjusting the position of the positioning plate 21 and allowing it to adapt to front vehicle body bases of different sizes. When the lead screw 15 is not rotated, the threaded connection between the lead screw 15 and the fixed plate 14 has a self-locking function, ensuring the stability of the adjusted position of the positioning plate 21.

[0040] The workpiece support block 17 can provide additional support for the front body base, preventing the front body base from shifting and deforming due to uneven force during positioning and welding.

[0041] The curved fitting surface 25 can better fit the shape of the front vehicle body base, increase the contact area between the positioning plate 21 and the front vehicle body base, and improve the stability and accuracy of positioning.

[0042] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. An adjustable front body assembly welding fixture, comprising a base plate (11), a positioning mechanism, and an adjustment mechanism, wherein the adjustment mechanism is mounted on the base plate (11), characterized in that: The positioning mechanism includes a positioning plate (21), a connecting plate (22), a positioning post (31), and an adjusting threaded sleeve (23). The positioning plate (21) is connected to the adjusting mechanism. The connecting plate (22) is fixedly connected to the upper end of the positioning plate (21). The positioning post (31) passes through the connecting plate (22). The positioning post (31) is slidably connected to the connecting plate (22) and circumferentially engaged. The connecting plate (22) is fixedly connected to the connecting sleeve. The adjusting threaded sleeve (23) is rotatably connected to the connecting sleeve and axially engaged. The positioning post (31) is provided with an external thread (32). The external thread (32) is threadedly connected to the adjusting threaded sleeve (23).

2. The adjustable front body assembly welding fixture according to claim 1, characterized in that: The positioning post (31) is provided with a groove (33) located at the external thread (32), the groove (33) extends along the length direction of the positioning post (31), and the connecting plate (22) is fixedly connected with a slider (34) that is engaged in the groove (33).

3. The adjustable front body assembly welding fixture according to claim 1, characterized in that: The positioning pin (31) is fitted with a locking threaded sleeve (24), the external thread (32) is threadedly connected to the locking threaded sleeve (24), and the locking threaded sleeve (24) abuts against the adjusting threaded sleeve (23).

4. The adjustable front body assembly welding fixture according to claim 1, characterized in that: The positioning plate (21) is fixedly connected to a connecting frame (41), and the connecting frame (41) is provided with a positioning pin (42). The positioning pin (42) is slidably connected to the connecting frame (41), and the connecting frame (41) is provided with a locking component connected to the positioning pin (42).

5. The adjustable front body assembly welding fixture according to claim 4, characterized in that: The locking assembly includes a locking plate (43), a screw (44), a first nut (45), and a second nut (46). The positioning pin (42) is fixedly connected to the screw (44). The screw (44) is threadedly connected to the first nut (45) and the second nut (46). The locking plate (43) is fixedly connected to the connecting bracket (41). The screw (44) passes through the locking plate (43). The first nut (45) and the second nut (46) abut against both sides of the locking plate (43).

6. The adjustable front body assembly welding fixture according to claim 5, characterized in that: A plastic ball (47) is fixedly connected to the end of the screw (44) away from the positioning pin (42).

7. The adjustable front body assembly welding fixture according to claim 1, characterized in that: The adjustment mechanism includes an adjustment base (12), a sliding block (13), a fixed plate (14), and a lead screw (15). The adjustment base (12) and the fixed plate (14) are both fixedly connected to the base plate (11). The sliding block (13) is slidably connected to the adjustment base (12). The lead screw (15) is rotatably connected to the sliding seat and axially linked. The lead screw (15) is threadedly connected to the fixed plate (14).

8. The adjustable front body assembly welding fixture according to claim 7, characterized in that: The lead screw (15) is fixedly connected to a handle (16).

9. The adjustable front body assembly welding fixture according to claim 7, characterized in that: The adjusting base (12) is fixedly connected to a workpiece support block (17) located below the positioning plate (21).

10. The adjustable front body assembly welding fixture according to claim 1, characterized in that: The positioning plate (21) is provided with an arc-shaped fitting surface (25).

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