Positioning clamp for welding sheet metal lower shell

Abstract

The utility model discloses a positioning fixture is welded with positioning clamp to sheet metal lower casing, including base, drive bin, a plurality of drive motor, positive and negative tooth screw rod, moving link, sliding block, connecting piece, rotation axis, telescopic link and clamping mechanism etc. structure, wherein, clamping mechanism is by U type spare, bolt, limit rod etc. component composition, first drive motor drives positive and negative tooth screw rod control moving link horizontal displacement, and second drive motor realizes the vertical motion of sliding block through the threaded rod, and third drive motor drives the disc adjustment board angle, and fourth drive motor is driven the rotation of rotation axis through gear and tooth ring transmission, and through the cooperation of telescopic link, bolt and nut, can adjust clamping mechanism and fix the length of extension, and the rotation bolt can push the rotator, makes the antiskid board slide in the recess of U type spare and realizes clamping, has realized the accurate positioning and nimble adjustment of sheet metal lower casing in horizontal, vertical direction and angle, effectively improved the welding quality and production efficiency, can adapt to a variety of size sheet metal parts.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a positioning fixture for welding sheet metal lower shells. Background Technology

[0002] In modern manufacturing, the welding of sheet metal lower shells is a critical process, and its quality directly affects the performance and service life of the product. During the welding process, precise positioning is crucial to ensuring weld quality and improving production efficiency. This makes positioning fixtures an indispensable auxiliary equipment for sheet metal welding. However, traditional sheet metal welding positioning fixtures have many shortcomings. On the one hand, manual positioning relies on the operator's experience, resulting in low positioning accuracy and problems such as welding position deviation and uneven welds, leading to a high product defect rate. On the other hand, traditional fixtures have a simple structure and are difficult to adapt to sheet metal parts of different sizes and shapes. Enterprises need to frequently change fixtures or customize special equipment, which is costly and inefficient. In addition, the thermal deformation and vibration generated during the welding process can also cause the workpiece held by traditional fixtures to shift, affecting welding stability. Therefore, developing a high-precision, highly versatile, and easy-to-operate positioning fixture for welding sheet metal lower shells is the key to solving the above problems and meeting the industry's production needs. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, the purpose of this utility model is to provide a positioning fixture for welding sheet metal lower shells, which can solve the problems of deviation and stability in the welding process of existing traditional manual positioning.

[0005] To solve the above technical problems, this utility model provides a positioning fixture for welding sheet metal lower housings, adopting the following technical solution: It includes a base, a drive chamber is provided inside the base near its upper surface, a third drive motor is installed inside the drive chamber, a first drive motor is fixedly connected to the front end of the base, a positive and negative threaded rod is fixedly connected to the output end of the first drive motor, a moving rod is threadedly connected to the outer surface of the positive and negative threaded rod, a slider is slidably connected inside the moving rod, a connector is fixedly connected to the front end of the slider, a rotating shaft is rotatably connected inside the connector, a telescopic rod is slidably connected to the inner wall of the rotating shaft, two telescopic rods are symmetrically distributed at both ends of the rotating shaft, and a clamping mechanism is provided at the front end of the telescopic rod;

[0006] The clamping mechanism includes a U-shaped component, bolts, a limiting rod, an anti-slip plate, and a rotating component.

[0007] Optionally, a turntable is fixedly connected to the output end of the third drive motor, and a placement plate is fixedly connected to the upper surface of the turntable. The upper two sides of the placement plate are respectively fixedly connected to the clamping mechanism.

[0008] The above technical solution enables the placement plate to rotate, thereby driving the sheet metal lower housing placed on it to adjust its angle, meeting the needs of different welding positions and angles, and increasing the flexibility and applicability of the fixture in terms of angle adjustment.

[0009] Optionally, a second drive motor is fixedly connected to the upper surface of the moving rod, and a threaded rod is fixedly connected to the output end of the second drive motor. The outer surface of the threaded rod is threadedly connected to the slider.

[0010] The above technical solution enables the slider to slide up and down within the moving rod, thereby controlling the vertical position adjustment of the connecting parts and clamping mechanism. It can precisely adjust the height of the clamping mechanism according to the height of the sheet metal parts or welding process requirements, thus improving the accuracy of positioning.

[0011] Optionally, a fourth drive motor is fixedly connected to the upper surface of the connector, a gear is fixedly connected to the output end of the fourth drive motor, a gear ring is meshed with the outer surface of the gear, and the inner wall of the gear ring is fixedly connected to the outer surface of the rotating shaft.

[0012] The above technical solution involves the meshing of gears and gear rings to drive the rotating shaft to rotate, allowing the clamping mechanism to adjust its angle around the rotating shaft. This enables flexible adjustment of the direction of the clamping mechanism to meet the welding angle requirements of different parts of the sheet metal parts, further enhancing the versatility of the positioning fixture.

[0013] Optionally, a limiting hole is formed on the outer surface of the rotating shaft, and a pin is installed in the limiting hole by means of a pin connection. The pin passes through the rotating shaft and the telescopic rod in sequence and extends beyond both. A nut is threadedly connected to the lower end of the pin.

[0014] The above technical solution uses nuts to lock the position of the telescopic rod on the rotating shaft, preventing the telescopic rod from sliding due to external forces during welding and ensuring the stability and reliability of the clamping mechanism when clamping sheet metal parts.

[0015] Optionally, the side end of the U-shaped component is fixedly connected to the telescopic rod, and the rear end of the U-shaped component is threadedly connected to a bolt.

[0016] The above technical solution ensures that the clamping mechanism can move as the telescopic rod extends and retracts.

[0017] Optionally, the front end of the bolt is rotatably connected to the rotating component, the front end of the rotating component is fixedly connected to the anti-slip plate, and the outer surface of the anti-slip plate slides in the groove of the U-shaped component.

[0018] Through the above technical solution, the anti-slip plate design increases the friction between the anti-slip plate and the sheet metal parts, preventing the sheet metal parts from shifting during the welding process and improving the clamping effect.

[0019] Optionally, the rear end of the anti-slip plate is fixedly connected to the limiting rod, the outer surface of the limiting rod is slidably connected to the U-shaped part, and there are two limiting rods symmetrically distributed on both sides of the rotating part.

[0020] The above technical solutions ensure that the anti-slip plate will not shift or shake during the sliding process, making the clamping action of the clamping mechanism more stable and precise, and further improving the stability and reliability of the positioning fixture.

[0021] In summary, this utility model has at least one of the following beneficial effects:

[0022] 1. Through the coordinated action of the first drive motor, the second drive motor, and the fourth drive motor, the horizontal displacement of the moving rod, the height adjustment of the connecting parts, and the angle change of the rotating shaft can be realized, enabling the clamping mechanism to be precisely positioned in three-dimensional space. With the help of the pin to fix the telescopic rod, the position of the sheet metal parts is kept stable during the welding process, reducing problems such as welding misalignment and uneven weld caused by positioning deviation, and significantly improving welding quality and product qualification rate.

[0023] 2. The spacing of the anti-slip plates in the clamping mechanism can be adjusted by bolts. In addition, the turntable drives the placement plate to rotate, which enables the clamp to adapt to sheet metal lower shells of different sizes and shapes and welding requirements. Whether it is a small precision sheet metal part or a large complex structural part, stable clamping and positioning can be achieved by adjustment, which effectively expands the application range of the clamp and improves the utilization rate of the equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3This is a schematic diagram of the telescopic structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 2. First drive motor; 3. Positive and negative threaded rods; 4. Moving rod; 5. Second drive motor; 6. Slider; 7. Connector; 8. Drive chamber; 9. Third drive motor; 10. Turntable; 11. Placement plate; 12. Fourth drive motor; 13. Gear; 14. Gear ring; 15. Rotating shaft; 16. Pin; 17. Nut; 18. U-shaped part; 19. Bolt; 20. Limiting rod; 21. Anti-slip plate; 22. Rotating part; 23. Limiting hole; 24. Telescopic rod; 25. Threaded rod; 26. Clamping mechanism. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] Reference Figure 1-4 This utility model discloses a positioning fixture for welding sheet metal lower housings, comprising a base 1, a drive chamber 8 disposed inside the base 1 near its upper surface, a third drive motor 9 installed inside the drive chamber 8, a first drive motor 2 fixedly connected to the front end of the base 1, a positive and negative threaded rod 3 fixedly connected to the output end of the first drive motor 2, a moving rod 4 threadedly connected to the outer surface of the positive and negative threaded rod 3, a slider 6 slidably connected inside the moving rod 4, a connector 7 fixedly connected to the front end of the slider 6, a rotating shaft 15 rotatably connected inside the connector 7, and a telescopic rod 24 slidably connected to the inner wall of the rotating shaft 15.

[0032] There are two telescopic rods 24, symmetrically distributed at both ends of the rotating shaft 15. A clamping mechanism 26 is provided at the front end of the telescopic rod 24. The output end of the third drive motor 9 is fixedly connected to the turntable 10. The upper surface of the turntable 10 is fixedly connected to the placement plate 11. The upper two sides of the placement plate 11 are fixedly connected to the clamping mechanism 26 respectively. The upper surface of the moving rod 4 is fixedly connected to the second drive motor 5. The output end of the second drive motor 5 is fixedly connected to the threaded rod 25. The outer surface of the threaded rod 25 is threadedly connected to the slider 6. The upper surface of the connecting piece 7 is fixedly connected to the fourth drive motor 12. The output end of the fourth drive motor 12 is fixedly connected to the gear 13. The outer surface of the gear 13 is meshed with the toothed ring 14. The inner wall of the toothed ring 14 is fixedly connected to the outer surface of the rotating shaft 15. A limit hole 23 is opened on the outer surface of the rotating shaft 15. A pin 16 is installed in the limit hole 23 by a pin connection. The pin 16 passes through the rotating shaft 15 and the telescopic rod 24 in sequence and extends beyond both. The lower end of the pin 16 is threadedly connected to the nut 17.

[0033] The clamping mechanism 26 includes a U-shaped part 18, a bolt 19, a limiting rod 20, an anti-slip plate 21, and a rotating part 22. The side end of the U-shaped part 18 is fixedly connected to the telescopic rod 24, the rear end of the U-shaped part 18 is threadedly connected to the bolt 19, the front end of the bolt 19 is rotatably connected to the rotating part 22, the front end of the rotating part 22 is fixedly connected to the anti-slip plate 21, the outer surface of the anti-slip plate 21 slides in the groove of the U-shaped part 18, the rear end of the anti-slip plate 21 is fixedly connected to the limiting rod 20, the outer surface of the limiting rod 20 is slidably connected to the U-shaped part 18, and there are two limiting rods 20 symmetrically distributed on both sides of the rotating part 22.

[0034] Working principle: The sheet metal lower housing is placed on the placement plate 11 fixedly connected to the upper surface of the turntable 10. It is initially fixed by the clamping mechanism 26. Rotating the bolt 19 pushes the rotating part 22 to drive the anti-slip plate 21 to slide in the groove of the U-shaped part 18. The two symmetrically distributed anti-slip plates 21 clamp the sheet metal lower housing. The limiting rod 20 ensures that the anti-slip plate 21 slides smoothly, completing the initial fixation. The first drive motor 2 is started, and its output end drives the positive and negative threaded rods 3 to rotate. Since the positive and negative threaded rods 3 are threadedly connected to the moving rods 4, the two moving rods 4 move towards each other under the drive of the threaded rods. The appropriate position for welding the lower sheet metal housing is determined by the clamping mechanism 26 in the horizontal direction. The sheet metal parts to be welded are fixed by the clamping mechanisms 26 at both ends of the telescopic rod 24. The distance of the telescopic rod 24 being stretched outward is adjusted according to the actual size and position requirements of the sheet metal to be welded, so that it can accurately clamp the sheet metal parts. After adjustment, the pin 16 is passed through the limiting hole 23 on the rotating shaft 15 and the telescopic rod 24 in sequence, and the nut 17 is screwed on the lower end of the pin 16 to fix the position of the telescopic rod 24 on the rotating shaft 15 and prevent it from sliding during the welding process.

[0035] The second drive motor 5 is started, and its output end drives the threaded rod 25 to rotate. The threaded rod 25 is threadedly connected to the slider 6. The slider 6 slides in the moving rod 4, which in turn drives the connecting piece 7, which is fixedly connected to the front end of the slider 6, to move downward until it moves to a suitable height position for welding operations, ensuring that the clamping mechanism 26 and the welding position are at a reasonable vertical height. The fourth drive motor 12 is started, and its output end drives the gear 13 to rotate. The gear 13 meshes with the gear ring 14. The inner wall of the gear ring 14 is fixedly connected to the outer surface of the rotating shaft 15, thereby driving the rotating shaft 15 to rotate. The rotating shaft 15 then drives the clamping mechanism 26 to rotate to the angle required for welding, providing an accurate orientation for the welding operation. After the welding work at both ends of the sheet metal part is completed, the third drive motor 9 is started, and its output end drives the turntable 10 to rotate. The placement plate 11 on the turntable 10 rotates accordingly, adjusting the lower sheet metal housing to a new angle. Then, the above steps of fixing the clamping mechanism 26 and adjusting its position and angle are repeated to weld other parts of the lower sheet metal housing until the entire welding work is completed.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A positioning fixture for welding sheet metal lower housings, comprising a base (1), characterized in that: The base (1) has a drive chamber (8) inside near the upper surface. The drive chamber (8) is equipped with a third drive motor (9). The front end of the base (1) is fixedly connected to a first drive motor (2). The output end of the first drive motor (2) is fixedly connected to a positive and negative threaded rod (3). The outer surface of the positive and negative threaded rod (3) is threadedly connected to a moving rod (4). The moving rod (4) is slidably connected to a slider (6). The front end of the slider (6) is fixedly connected to a connector (7). The connector (7) is rotatably connected to a rotating shaft (15). The inner wall of the rotating shaft (15) is slidably connected to a telescopic rod (24). There are two telescopic rods (24) symmetrically distributed at both ends of the rotating shaft (15). The front end of the telescopic rod (24) is provided with a clamping mechanism (26). The clamping mechanism (26) includes a U-shaped part (18), a bolt (19), a limiting rod (20), an anti-slip plate (21), and a rotating part (22).

2. The positioning fixture for welding sheet metal lower housing according to claim 1, characterized in that: The output end of the third drive motor (9) is fixedly connected to a turntable (10), and a placement plate (11) is fixedly connected to the upper surface of the turntable (10). The upper two sides of the placement plate (11) are respectively fixedly connected to the clamping mechanism (26).

3. The positioning fixture for welding sheet metal lower housing according to claim 1, characterized in that: The upper surface of the moving rod (4) is fixedly connected to a second drive motor (5), and the output end of the second drive motor (5) is fixedly connected to a threaded rod (25). The outer surface of the threaded rod (25) is threadedly connected to the slider (6).

4. A positioning fixture for welding sheet metal lower housings according to claim 1, characterized in that: The upper surface of the connector (7) is fixedly connected to a fourth drive motor (12), the output end of the fourth drive motor (12) is fixedly connected to a gear (13), the outer surface of the gear (13) is meshed with a gear ring (14), and the inner wall of the gear ring (14) is fixedly connected to the outer surface of the rotating shaft (15).

5. A positioning fixture for welding sheet metal lower housings according to claim 1, characterized in that: A limiting hole (23) is provided on the outer surface of the rotating shaft (15). A pin (16) is installed in the limiting hole (23) by means of a pin connection. The pin (16) passes through the rotating shaft (15) and the telescopic rod (24) in sequence and extends beyond both. A nut (17) is threaded to the lower end of the pin (16).

6. A positioning fixture for welding sheet metal lower housings according to claim 1, characterized in that: The side end of the U-shaped part (18) is fixedly connected to the telescopic rod (24), and the rear end of the U-shaped part (18) is threadedly connected to the bolt (19).

7. A positioning fixture for welding sheet metal lower housings according to claim 1, characterized in that: The front end of the bolt (19) is rotatably connected to the rotating part (22), the front end of the rotating part (22) is fixedly connected to the anti-slip plate (21), and the outer surface of the anti-slip plate (21) slides in the groove of the U-shaped part (18).

8. A positioning fixture for welding sheet metal lower housings according to claim 1, characterized in that: The rear end of the anti-slip plate (21) is fixedly connected to the limiting rod (20), and the outer surface of the limiting rod (20) is slidably connected to the U-shaped part (18). There are two limiting rods (20) and they are symmetrically distributed on both sides of the rotating part (22).

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