Positioning clamp for welding front wall plate of automobile

Abstract

The utility model discloses a positioning clamp for welding an automobile front wall plate, which comprises a front wall plate supporting unit, a front wall plate positioning unit, a front wall plate positioning unit and a rear wall plate positioning unit, and is characterized in that the front wall plate supporting unit comprises a clamp table and a rectangular frame positioned right above the clamp table; the turn-over driving unit comprises two hydraulic telescopic rods which are fixedly arranged at the two ends of the upper side wall of the clamp table respectively, the top end of each hydraulic telescopic rod is fixedly connected with a fixing lug, the two ends of the rectangular frame are rotationally connected with the corresponding fixing lugs through connecting blocks, one fixing lug is fixedly connected with a driving motor, and the other fixing lug is fixedly connected with a driving motor. And an output shaft of the driving motor penetrates through the fixing lug and is fixedly connected with one of the connecting blocks. The other side of the automobile front wall plate can be welded and positioned without disassembling the automobile front wall plate, so that the time for repeatedly disassembling the automobile front wall plate is saved, and the welding efficiency of the automobile front wall plate is improved in a disguised manner.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile front wall panel welding, in particular to a positioning fixture for automobile front wall panel welding. Background Technique

[0002] In recent years, the automobile front wall panel is an important part of the automobile body. It is located at the front of the body and is connected to the engine compartment, the driver's cab and other structural parts of the body. In terms of manufacturing processes, the front wall panel is usually made by processes such as stamping, welding, and assembly. The welding process is a key step in the manufacture of the front wall panel, which determines the overall strength and reliability of the front wall panel. During the welding process of the automobile front wall panel, a corresponding positioning fixture for welding is required to position the automobile front wall panel.

[0003] At present, the positioning fixtures for welding used in the field of automobile front wall panel welding are often fixed and non - reversible in actual use. In order to ensure the welding strength of some automobile front wall panels, double - sided welding is often required. When welding the other side, the automobile front wall panel often needs to be disassembled and re - positioned after being turned over, which takes a lot of time, thus resulting in low welding efficiency of the automobile front wall panel. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the name of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification and the name of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in a positioning fixture for automobile front wall panel welding, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a positioning fixture for automobile front wall panel welding, which is suitable for solving the problem that when welding the other side, the automobile front wall panel often needs to be disassembled and re - positioned after being turned over, which takes a lot of time, thus resulting in low welding efficiency of the automobile front wall panel.

[0007] To solve the above - mentioned technical problems, the present utility model provides the following technical solution: A positioning fixture for automobile front wall panel welding, comprising:

[0008] A front wall panel support unit, which includes a fixture table and a rectangular frame located directly above the fixture table;

[0009] The turning drive unit includes two hydraulic telescopic rods respectively and fixedly arranged at both ends of the upper side wall of the fixture table. A fixing ear is fixedly connected to the top end of each hydraulic telescopic rod. Both ends of the rectangular frame are rotatably connected to the corresponding fixing ears through connecting blocks. A drive motor is fixedly connected to one of the fixing ears, and the output shaft of the drive motor penetrates through the fixing ear and is fixedly connected to one of the connecting blocks.

[0010] As a preferred solution of the positioning fixture for welding the front wall panel of an automobile described in the present invention, wherein: the positioning fixture further includes a multi-point positioning unit, which includes a plurality of sliding rods respectively and fixedly arranged on the upper and lower side walls of the rectangular frame. A corresponding rectangular block is slidably sleeved on each sliding rod, and a threaded ring is threadedly connected to each sliding rod. The threaded ring abuts against the sliding rod. One side of each rectangular block close to the center of the rectangular frame is fixedly connected with a positioning plate. A fastening bolt is threadedly connected to the positioning plate, and a pressing block is rotatably connected through the fastening bolt. A guiding telescopic rod with symmetrical positions is fixedly connected between the pressing block and the positioning plate.

[0011] As a preferred solution of the positioning fixture for welding the front wall panel of an automobile described in the present invention, wherein: a grid-patterned rubber pad is fixedly padded at one end of each pressing block away from the sliding rod, and the thickness of the grid-patterned rubber pad is one-third to one-half of the thickness of the pressing block.

[0012] As a preferred solution of the positioning fixture for welding the front wall panel of an automobile described in the present invention, wherein: a drawer box is fixedly connected to the lower side wall of the fixture table, and tool drawers with symmetrical positions are slidably installed in the drawer box.

[0013] As a preferred solution of the positioning fixture for welding the front wall panel of an automobile described in the present invention, wherein: both sides of the connecting block and the end wall of the rectangular frame are fixedly connected through reinforcing plates, and the reinforcing plates are arranged in a triangular shape.

[0014] As a preferred solution of the positioning fixture for welding the front wall panel of an automobile described in the present invention, wherein: the rectangular frame is made of austenitic stainless steel, and an anti-corrosion coating is plated on the outer surface of the connecting block.

[0015] The beneficial effects of the present invention: Place the front wall panel of the automobile to be welded in the rectangular frame, and sequentially tighten the corresponding fastening bolts. The pressing block rotatably connected therewith can perform multi-point firm positioning on the front wall panel of the automobile under the guidance of the guiding telescopic rod. When one side of the front wall panel of the automobile is welded, at this time, control the hydraulic telescopic rod to extend, and then control the drive motor to rotate 180 degrees. Without disassembling the front wall panel of the automobile, the welding positioning of the other side of the front wall panel of the automobile can be realized, saving the time spent on repeatedly disassembling the front wall panel of the automobile and improving the welding efficiency of the front wall panel of the automobile in disguise. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of a positioning fixture for welding the front wall panel of an automobile proposed by the present utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the turning drive unit of a positioning fixture for welding the front wall panel of an automobile proposed by the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the multi-point positioning unit of a positioning fixture for welding the front wall panel of an automobile proposed by the present utility model.

[0020] Description of the drawings: 100 Front wall panel support unit, 101 Fixture table, 102 Rectangular frame, 103 Drawer box, 104 Tool drawer, 200 Turning drive unit, 201 Hydraulic telescopic rod, 202 Fixed ear, 203 Drive motor, 204 Connecting block, 205 Reinforcing plate, 300 Multi-point positioning unit, 301 Slide bar, 302 Rectangular block, 303 Thread ring, 304 Positioning plate, 305 Fastening bolt, 306 Pressing block, 307 Guide telescopic rod. Detailed implementation manners

[0021] To make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model in conjunction with the drawings in the specification.

[0022] Many specific details are set forth in the following description in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0023] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0024] Next, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0025] Embodiment

[0026] Referring to Figures 1 - 3 , an embodiment of the present utility model provides a positioning fixture for welding an automotive front wall panel, including: a front wall panel support unit 100, a turning drive unit 200, and a multi-point positioning unit 300.

[0027] Among them, the front wall panel support unit 100 includes a fixture table 101 and a rectangular frame 102 located directly above the fixture table 101. A drawer box 103 is fixedly connected to the lower side wall of the fixture table 101, and tool drawers 104 with symmetrical positions are slidably installed in the drawer box 103. Through the settings of the drawer box 103 and the tool drawers 104, tools used for welding the automotive front wall panel can be temporarily stored to prevent the tools from being scattered everywhere.

[0028] Secondly, the turning drive unit 200 includes two hydraulic telescopic rods 201 respectively fixedly arranged at both ends of the upper side wall of the fixture table 101. A fixed ear 202 is fixedly connected to the top end of each hydraulic telescopic rod 201. Both ends of the rectangular frame 102 are rotatably connected to the corresponding fixed ears 202 through connection blocks 204. Both sides of the connection block 204 and the end walls of the rectangular frame 102 are fixedly connected through reinforcing plates 205, and the reinforcing plates 205 are arranged in a triangular shape. Through the setting of the reinforcing plates 205, the connection stability between the connection block 204 and the rectangular frame 102 is improved. The rectangular frame 102 is made of austenitic stainless steel. The rectangular frame 102 made of austenitic stainless steel can not only meet the requirements of its own strength, but also has strong corrosion resistance. In addition, an anti-corrosion coating is plated on the outer surface of the connection block 204. The setting of the anti-corrosion coating improves the anti-corrosion ability of the connection block 204. A drive motor 203 is fixedly connected to one of the fixed ears 202, and the output shaft of the drive motor 203 penetrates through the fixed ear 202 and is fixedly connected to one of the connection blocks 204.

[0029] Next, the multi-point positioning unit 300 includes a plurality of sliding rods 301 respectively fixedly arranged on the upper and lower side walls of the rectangular frame 102. A corresponding rectangular block 302 is slidably sleeved on each sliding rod 301, and a threaded ring 303 is threadedly connected to each sliding rod 301. The threaded ring 303 abuts against the sliding rod 301. One side of each rectangular block 302 close to the center of the rectangular frame 102 is fixedly connected with a positioning plate 304. A fastening bolt 305 is threadedly connected to the positioning plate 304, and a pressing block 306 is rotatably connected through the fastening bolt 305 and penetrating the positioning plate 304. A grid-patterned rubber pad is fixedly padded at one end of each pressing block 306 away from the sliding rod 301, and the thickness of the grid-patterned rubber pad is one-third to one-half of the thickness of the pressing block 306. Through the setting of the grid-patterned rubber pad, the defect that clamp marks are easily left on the surface of the automotive front wall panel during the clamping and positioning process is effectively solved. A guiding telescopic rod 307 with symmetric positions is fixedly connected between the pressing block 306 and the positioning plate 304.

[0030] During use, the automotive front wall panel to be welded is placed inside the rectangular frame 102. The corresponding fastening bolts 305 are tightened in sequence. The pressing block 306 rotatably connected therewith can perform multi-point firm positioning on the automotive front wall panel under the guidance of the guiding telescopic rod 307. When one side of the automotive front wall panel is welded, at this time, the hydraulic telescopic rod 201 is controlled to extend, and then the driving motor 203 is controlled to rotate 180 degrees. Without disassembling the automotive front wall panel, the welding and positioning of the other side of the automotive front wall panel can be realized, saving the time spent on repeatedly disassembling the automotive front wall panel and improving the welding efficiency of the automotive front wall panel in disguise.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A positioning fixture for welding a front wall panel of an automobile, characterized in that: include: A front wall panel supporting unit (100), comprising a fixture table (101) and a rectangular frame (102) located directly above the fixture table (101); The flipping drive unit (200) comprises two hydraulic telescopic rods (201) respectively fixedly arranged at the two ends of the upper side wall of the clamping table (101), each of the hydraulic telescopic rods (201) is fixedly connected to a fixing ear (202) at the top end, the two ends of the rectangular frame (102) are rotatably connected to the corresponding fixing ear (202) through a connecting block (204), one of the fixing ears (202) is fixedly connected to a driving motor (203), and the output shaft of the driving motor (203) passes through the fixing ear (202) and is fixedly connected to one of the connecting blocks (204).

2. A positioning fixture for welding a front wall panel of an automobile according to claim 1, characterized in that: The positioning fixture also includes a multi-point positioning unit (300), which includes a plurality of sliding rods (301) respectively fixedly arranged on the upper and lower side walls of the rectangular frame (102), each of the sliding rods (301) is slidably sleeved with a corresponding rectangular block (302), and each of the sliding rods (301) is threadedly connected with a thread ring (303), and the thread ring (303) abuts against the sliding rod (301), and each of the rectangular blocks (302) is fixedly connected with a positioning plate (304) on one side close to the center of the rectangular frame (102), and the positioning plate (304) is threadedly connected with a fastening bolt (305), and the fastening bolt (305) passes through the positioning plate (304) and is rotatably connected with a clamping block (306), and a symmetrically positioned guide telescopic rod (307) is fixedly connected between the clamping block (306) and the positioning plate (304).

3. A positioning fixture for welding a front wall panel of an automobile according to claim 2, characterized in that: One end of each of the pressing blocks (306) away from the slide bar (301) is fixedly provided with a grid-patterned rubber pad, and the thickness of the grid-patterned rubber pad is one third to one half of the thickness of the pressing block (306).

4. The positioning fixture for welding the front wall of an automobile according to claim 1, characterized in that: A drawer box (103) is fixedly connected to the lower side wall of the fixture table (101), and a tool drawer (104) symmetrically positioned is slidably installed in the drawer box (103).

5. The positioning fixture for welding the front wall of an automobile according to claim 1, characterized in that: Both sides of the connection block (204) are fixedly connected to the end walls of the rectangular frame (102) via reinforcing plates (205), and the reinforcing plates (205) are arranged in a triangle shape.

6. A positioning fixture for welding a front wall panel of an automobile according to claim 1, characterized in that: The rectangular frame (102) is made of austenitic stainless steel, and the outer surface of the connecting block (204) is plated with an anti-corrosion coating.

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