Height-adjustable welding fixture

Abstract

The utility model discloses a height-adjustable welding fixture, which comprises two groups of bases, supports arranged on the bases, a connecting frame arranged between the two groups of supports, a fixing device fixedly connected on the connecting frame, and a lifting device arranged on the supports. The lifting device comprises a servo motor fixedly installed on the top of the support and a threaded rod fixedly connected with the servo motor and located in the center of the support. The auxiliary plates are fixedly connected to the side walls of the two sides of the support, and sliding grooves are formed in the outer walls of the sides, close to the connecting frame, of the auxiliary plates; a first sliding block in threaded connection with the threaded rod is arranged at the top of the connecting plate, a sliding way for the first sliding block to slide is arranged on the support, and a second sliding block in sliding fit with the sliding groove is arranged at the bottom of the connecting plate. By arranging the lifting device, the fixing device of the welding clamp can move up and down, the welding clamp can adapt to various different sheet metal parts, the utilization rate of the welding clamp is increased, and therefore the assembly precision and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of welding fixtures, in particular to a welding fixture with adjustable height. Background Art

[0002] Welding fixtures play an important role in the production process of automobiles. There are four major process flows of automobiles: stamping, welding, painting, and assembly. Among them, welding is an important link in the manufacturing of automobile parts and car bodies. In order to ensure the quality of welding, welding fixtures are usually used to position and clamp the sheet metal parts to be welded to avoid the movement of the sheet metal parts during the welding process, which causes deviations in the weld points and leads to unstable welding quality. However, the existing tooling fixtures are fixed on the ground and cannot be moved up and down. They are relatively simple and traditional to use. The welding of some workpieces is restricted, which reduces the welding efficiency. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a welding fixture with adjustable height to solve the problems existing in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A height-adjustable welding fixture comprises two groups of bases, each of which is provided with a bracket, a connecting frame between the two groups of brackets, a fixing device fixedly connected to the connecting frame, a lifting device on the bracket, the lifting device comprising a servo motor fixedly mounted on the top of the bracket and a threaded rod located in the center of the bracket and threadedly connected thereto; it also comprises an auxiliary plate fixedly connected to the side walls on both sides of the bracket, the auxiliary plate having a slide groove on a side wall plate close to the connecting frame; it also comprises a connecting plate connecting the bracket and the connecting frame, the top of the connecting plate having a first sliding block threadedly connected to the threaded rod, the bracket having a slideway for the first sliding block to slide, and the bottom of the connecting plate having a second sliding block slidably matched with the slide groove.

[0006] Furthermore, the fixing device includes two groups of fixed bases fixedly connected to the connecting frame, the fixed bases are slidably connected with fixed clamps, the top of the fixed bases has a clamp slide groove, the bottom of the fixed clamps has a slider that matches the clamp slide groove, the two groups of fixed clamps are threadedly connected by fastening screws located on the left and right sides thereof, and the fixed clamps are fixedly connected with a rubber pad near one end of the workpiece.

[0007] Furthermore, the bottom of the auxiliary plate has a supporting plate.

[0008] Furthermore, the connecting frame is provided with a plurality of sets of fixing devices.

[0009] The beneficial effect of the utility model is that the fixing device of the welding fixture can be moved up and down by arranging the lifting device, so that the welding fixture can adapt to various types of sheet metal parts, improve the utilization rate of the welding fixture, and thus improve the assembly accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 For the utility model Figure 1 A partial enlarged view of the middle A;

[0012] Figure 3 It is a structural schematic diagram of the fixing device of the utility model;

[0013] Figure 4 It is a structural schematic diagram of the connecting plate of the utility model; DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0015] A height-adjustable welding fixture, such as Figure 1-4 As shown, it includes two groups of bases 1, with brackets 2 on the base 1, and a connecting frame 3 between the two groups of brackets 2, the connecting frame 3 is fixedly connected with a fixing device 5, and the bracket 2 is provided with a lifting device 4, the lifting device 4 includes a servo motor 401 fixedly installed on the top of the bracket 2 and a threaded rod located in the center of the bracket 2 and threadedly connected to it; it also includes an auxiliary plate 406 fixedly connected to the side walls of both sides of the bracket 2, and the auxiliary plate 406 has a sliding groove 407 on a side wall plate close to the connecting frame 3; it also includes a connecting plate 403 connecting the bracket 2 and the connecting frame 3, and the top of the connecting plate 403 has a threaded rod threaded with the threaded rod The first sliding block 404 is connected, and the bracket 2 has a slideway 402 for the first sliding block 404 to slide, and the bottom of the connecting plate 403 has a second sliding block 405 that slides with the slide groove 407; start the servo motor 401, and as the threaded rod 402 rotates, the first sliding block 404 is driven to move upward along the slideway 402, and at the same time, the second sliding block 405 slides upward along the slide groove 407, and then the connecting plate 403 drives the connecting frame 3 to move upward, and the height of its lifting is controlled by the servo motor 401, thereby completing the up and down movement of the welding fixture, improving the utilization rate of the welding fixture, and thus improving the assembly accuracy and efficiency.

[0016] In the utility model, preferably, the fixing device 5 includes two groups of fixed bases 501 fixedly connected to the connecting frame 3, and the fixed bases 501 are slidably connected with fixed clamps 502, the top of the fixed base 501 is provided with a clamp slide groove 505, and the bottom of the fixed clamp 502 is provided with a slider 506 matching the clamp slide groove 505, the two groups of fixed clamps 502 are threadedly connected by fastening screws 504 located on the left and right sides thereof, and the fixed clamps 502 are fixedly connected with a rubber pad 503 near one end of the workpiece; when welding is required, the two groups of fixed clamps 502 are separated, and the fastening screw 504 on the fixing device 5 is rotated. At this time, the slider 506 slides along the clamp slide groove 505, and then the workpiece to be welded is placed between the fixed clamps 502 and the fastening screw 504 is tightened until the rubber pad 503 clamps the workpiece and then the height is adjusted by the lifting device 4.

[0017] In the present invention, preferably, the bottom of the auxiliary plate 406 has a support plate 408 to further support the auxiliary plate 406 to make it more stable.

[0018] In the utility model, preferably, the connecting frame 3 is provided with a plurality of fixing devices 5, so that the welding of workpieces can be completed in batches at one time, thereby improving the welding efficiency.

[0019] The working principle of the utility model is as follows: separate the two groups of fixing clamps 502, rotate the fastening screw 504 on the fixing device 5, at this time the slider 506 slides along the clamp slide groove 505, and then place the workpiece to be welded between the fixing clamps 502 and tighten the fastening screw 504 until the rubber pad 503 clamps the workpiece; then start the servo motor 401, and as the threaded rod 402 rotates, the first sliding block 404 is driven to move upward along the slideway 402, and at the same time the second sliding block 405 slides upward along the slide groove 407, and then the connecting plate 403 drives the connecting frame 3 to move upward, and the servo motor 401 controls its lifting height, thereby completing the up and down movement of the welding clamp, improving the utilization rate of the welding clamp, and thus improving the assembly accuracy and efficiency.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A height-adjustable welding fixture, comprising two sets of bases (1), each of which has a bracket (2), a connecting frame (3) between the two sets of brackets (2), a fixing device (5) fixedly connected to the connecting frame (3), characterized in that: The support (2) is provided with a lifting device (4), and the lifting device (4) includes a servo motor (401) fixedly mounted on the top of the support (2) and a threaded rod threadedly connected to the servo motor (401) and located at the center of the support (2); it also includes an auxiliary plate (406) fixedly connected to the side walls of both sides of the support (2), and a side wall plate of the auxiliary plate (406) close to the connecting frame (3) has a slide groove (407); it also includes a connecting plate (403) connecting the support (2) and the connecting frame (3), the top of the connecting plate (403) has a first sliding block (404) threadedly connected to the threaded rod, the support (2) has a slideway (402) for the first sliding block (404) to slide, and the bottom of the connecting plate (403) has a second sliding block (405) slidably matched with the slide groove (407).

2. The height-adjustable welding fixture according to claim 1, characterized in that: The fixing device (5) comprises two groups of fixing bases (501) fixedly connected to the connecting frame (3); a fixing clamp (502) is slidably connected to the fixing base (501); a clamp slide groove (505) is provided on the top of the fixing base (501); a sliding block (506) matched with the clamp slide groove (505) is provided on the bottom of the fixing clamp (502); the two groups of fixing clamps (502) are threadedly connected via fastening screws (504) located on the left and right sides thereof; and a rubber pad (503) is fixedly connected to one end of the fixing clamp (502) close to the workpiece.

3. The height-adjustable welding fixture according to claim 2, characterized in that: The auxiliary plate (406) has a supporting plate (408) at the bottom.

4. The height-adjustable welding fixture according to claim 3, characterized in that: The connecting frame (3) is provided with a plurality of sets of fixing devices (5).

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