Automobile welding fixture capable of being quickly switched

Abstract

A clamping assembly comprises telescopic air cylinders and a clamping plate, the telescopic air cylinders are fixed to the two ends of a machining plate, the clamping plate is fixed to the output ends of the telescopic air cylinders, and the two ends of the clamping plate are symmetrically provided with two guide grooves and clamping rods; the rear ends of the clamping rods can slide in the guide grooves, the two clamping plates can limit the two ends of the automobile plate on the machining plate by starting a telescopic air cylinder, the two first screw rods can be driven to rotate by a rotating shaft by starting a motor, and the two clamping rods can synchronously move in the guide grooves in different directions. And therefore, the multiple clamping rods can center and limit the automobile plate on the machining plate on the two sides of the automobile plate, and the stability of the automobile plate during welding can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a fast-switching automobile welding fixture. Background Art

[0002] The development, research, and replacement of car models in automobile manufacturers require the cooperation and support of various industries and factories. Automobile welding is one of the four major processes in automobile production. Welding is also known as mechanical tailoring, which is responsible for welding stamped workpieces together and is widely used in the manufacturing industry.

[0003] There are four steps in the automobile manufacturing process: stamping - welding - painting - assembly. The degree of automation and flexibility of welding determines the development prospects and future of welding. At present, when processing and producing automobiles on the market, it is necessary to weld the metal plates on the automobiles. However, the existing welding fixtures usually clamp and limit the two ends of the metal plates when in use. When the size of the metal plate is large, the middle part cannot be fixed, the clamping workpiece cannot be switched, and the fixation will be loose. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies of the prior art, the utility model provides a fast-switchable automobile welding fixture.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fast-switchable automobile welding fixture, comprising a processing plate, on which two clamping assemblies are symmetrically arranged;

[0008] The clamping assembly includes a telescopic cylinder and a clamping plate, the telescopic cylinder is fixed to both ends of the processing plate, and the clamping plate is fixed to the output end of the telescopic cylinder, two guide grooves and a clamping rod are symmetrically provided at both ends of the clamping plate, the rear end of the clamping rod can slide inside the guide groove, a motor is fixedly provided at one end of the clamping plate, and a rotating shaft passing through the guide groove is provided at the output end of the motor, two first screws with reverse thread structures are symmetrically provided on the rotating shaft, the first screw can pass through the clamping rod, and the clamping rod is threadedly connected to the first screw;

[0009] A positioning groove is provided inside the clamping rod, and a plurality of card slots are provided on the inner wall of the positioning groove. A clamping block is provided at one end of the clamping rod, and a docking rod inserted into the positioning groove is provided on the clamping block. Multiple cavities are provided on both sides of the docking rod, and a spring is provided inside the cavity. A card block is provided at one end of the spring to cooperate with the card slot.

[0010] Furthermore, the present invention has the following improvements: the motor is a servo motor.

[0011] In order to improve the smoothness of the sliding of the clamping plate, the improvement of the present invention is that a plurality of sliding grooves are provided at both ends of the processing plate, and a slider that cooperates with the sliding grooves is provided at the lower end of the clamping plate.

[0012] Furthermore, the present invention has been improved in that the card block and the card slot are both arc-shaped.

[0013] Furthermore, the present invention is improved in that a toggle block is provided at one end of the clamping block.

[0014] Furthermore, the improvement of the utility model is that a stop block is provided above the clamping block, a limiting rod is fixedly provided at the upper end of the clamping block and a second screw is rotatably provided, the second screw and the limiting rod can both pass through the stop block, and the second screw is threadedly connected to the stop block.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a fast-switchable automobile welding fixture with the following beneficial effects:

[0017] The fast-switchable automobile welding fixture can start the telescopic cylinder to limit the two ends of the automobile plate on the processing plate. Start the motor to drive the two first screws to rotate, so that the two clamping rods can move synchronously in different directions in the guide groove. Then, multiple clamping rods can be used to limit the center of the automobile plate on the processing plate on both sides of the automobile plate, thereby improving the stability of the automobile plate during welding.

[0018] By cooperating with the clamping block and the clamping slot, the position of the docking rod can be limited, thereby facilitating temporary adjustment of the position of the clamping block. In addition, the clamping block can be used to clamp both sides of the automobile plate, facilitating quick switching of the type of clamped workpiece, making this structure convenient for clamping and fixing automobile plates of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0020] Figure 2 For this utility model Figure 1 Side view of

[0021] Figure 3 For this utility model Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0022] Figure 4 This is a schematic diagram of the internal structure of the hollow cavity of the utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the positioning groove in the utility model;

[0024] In the figure: 1. Processing plate; 2. Telescopic cylinder; 3. Clamping plate; 4. Clamping rod; 5. Guide groove; 6. Motor; 7. Rotating shaft; 8. First screw; 9. Clamping block; 10. Docking rod; 11. Cavity; 12. Block; 13. Stop block; 14. Second screw; 15. Limit rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model provides a fast-switchable automobile welding fixture, comprising a processing plate 1, on which two clamping assemblies are symmetrically arranged;

[0027] The clamping assembly includes a telescopic cylinder 2 and a clamping plate 3. The telescopic cylinder 2 is fixed to both ends of the processing plate 1, and the clamping plate 3 is fixed to the output end of the telescopic cylinder 2. Two guide grooves 5 and a clamping rod 4 are symmetrically provided at both ends of the clamping plate 3. The rear end of the clamping rod 4 can slide inside the guide groove 5. A motor 6 is fixed to one end of the clamping plate 3. The output end of the motor 6 is provided with a rotating shaft 7 that passes through the guide groove 5. Two first screws 8 with reverse thread structures are symmetrically provided on the rotating shaft 7. The first screw 8 can pass through the clamping rod 4, and the clamping rod 4 is threadedly connected to the first screw 8.

[0028] A positioning groove is provided inside the clamping rod 4, and a plurality of card slots are provided on the inner wall of the positioning groove. A clamping block 9 is provided at one end of the clamping rod 4, and a docking rod 10 is provided on the clamping block 9 to be inserted into the interior of the positioning groove. A plurality of cavities 11 are provided on both sides of the docking rod 10, and a spring is provided inside the cavity 11. A card block 12 that cooperates with the card slot is provided at one end of the spring.

[0029] In this embodiment, the automobile sheet to be welded is placed on the processing plate 1, and then the telescopic cylinder 2 is activated, which enables the two clamping plates 3 to limit the ends of the automobile sheet on the processing plate 1. Further, the motor 6 is activated, which enables the rotating shaft 7 to drive the two first screws 8 to rotate. Through the action of the directional thread structure, the two clamping rods 4 can be synchronously moved in opposite directions within the guide groove 5. As a result, the multiple clamping rods 4 can be used on both sides of the automobile sheet to limit the center of the automobile sheet on the processing plate 1, which can improve the stability of the automobile sheet during welding.

[0030] When the size of the automobile plate is long, pulling the clamping block 9 can make the docking rod 10 be drawn out of the positioning groove. The spring can provide an elastic force to the clamping block 12, which can make the clamping block 12 enter the specified clamping groove. Through the cooperation between the clamping block 12 and the clamping groove, the position of the docking rod 10 can be limited, thereby facilitating the temporary adjustment of the position of the clamping block 9. In addition, the clamping block 9 can be used to clamp both sides of the automobile plate, which is convenient for quickly switching the model of the clamped workpiece, making this structure convenient for clamping and fixing automobile plates of different sizes.

[0031] In this embodiment, the motor 6 is a servo motor.

[0032] In this embodiment, a plurality of slide grooves are provided at both ends of the processing plate 1, and a slider that cooperates with the slide groove is provided at the lower end of the clamping plate 3. When the clamping plate 3 moves, the slider will move in the slide groove. The slide groove and the guide groove 5 can both be rectangular, which can improve the smoothness of the clamping plate 3 when sliding.

[0033] In this embodiment, the clamping block 12 and the clamping slot are both arc-shaped.

[0034] In this embodiment, a toggle block is provided at one end of the clamping block 9 , and the toggle block can facilitate operation of the clamping block 9 .

[0035] In this embodiment, a stopper 13 is provided above the clamping block 9, a limiting rod 15 is fixedly provided at the upper end of the clamping block 9 and a second screw 14 is rotatably provided, the second screw 14 and the limiting rod 15 can both pass through the stopper 13, and the second screw 14 is threadedly connected to the stopper 13. When the position of the clamping block 9 is adjusted, the second screw 14 is rotated, and the threaded structure can be used to make the stopper 13 descend along the limiting rod 15, so that the stopper 13 can provide a pressure to the automobile plate. At this time, the stopper 13 can contact the upper end of the automobile plate, which can further improve the stability of the automobile plate during clamping.

[0036] In the description herein, it should be noted that relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "include," "comprise," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fast-switchable automobile welding fixture, comprising a processing plate (1), characterized in that: Two clamping assemblies are symmetrically arranged on the processing plate (1); The clamping assembly includes a telescopic cylinder (2) and a clamping plate (3), wherein the telescopic cylinder (2) is fixed at both ends of the processing plate (1), and the clamping plate (3) is fixed at the output end of the telescopic cylinder (2), two guide grooves (5) and a clamping rod (4) are symmetrically arranged at both ends of the clamping plate (3), and the rear end of the clamping rod (4) can slide inside the guide groove (5), and a motor (6) is fixedly arranged at one end of the clamping plate (3), and a rotating shaft (7) passing through the guide groove (5) is provided at the output end of the motor (6), and two first screw rods (8) with reverse thread structures are symmetrically arranged on the rotating shaft (7), and the first screw rod (8) can pass through the clamping rod (4), and the clamping rod (4) is threadedly connected to the first screw rod (8); A positioning groove is provided inside the clamping rod (4), and a plurality of clamping grooves are provided on the inner wall of the positioning groove. A clamping block (9) is provided at one end of the clamping rod (4), and a docking rod (10) is provided on the clamping block (9) and inserted into the positioning groove. A plurality of cavities (11) are provided on both sides of the docking rod (10), and a spring is provided inside the cavity (11). A clamping block (12) is provided at one end of the spring and matches the clamping groove.

2. The fast-switchable automobile welding fixture according to claim 1, characterized in that: The motor (6) is a servo motor.

3. The fast-switchable automobile welding fixture according to claim 2, characterized in that: A plurality of slide grooves are provided at both ends of the processing plate (1), and a slider matched with the slide grooves is provided at the lower end of the clamping plate (3).

4. The fast-switchable automobile welding fixture according to claim 3, characterized in that: The clamping block (12) and the clamping slot are both arc-shaped.

5. The fast-switchable automobile welding fixture according to claim 4, characterized in that: One end of the clamping block (9) is provided with a toggle block.

6. The fast-switchable automobile welding fixture according to claim 5, characterized in that: A stopper (13) is provided above the clamping block (9), a limiting rod (15) is fixedly provided at the upper end of the clamping block (9) and a second screw rod (14) is rotatably provided, the second screw rod (14) and the limiting rod (15) can both pass through the stopper (13), and the second screw rod (14) is threadedly connected to the stopper (13).

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