Welding device

Abstract

A welding device comprises a base, a first motor is fixed to the bottom of the base, a first rotating shaft is arranged at the output end of the first motor, a welding table is rotationally arranged at the top of the first rotating shaft, a mounting plate is fixed to the first rotating shaft, a first air cylinder is rotationally arranged on the mounting plate, and the other end of the first air cylinder is rotationally arranged at the bottom of the welding table. A clamping assembly is arranged on the welding table, a connecting frame is fixed to one side of the base, a second motor is fixed to the connecting frame, a second rotating shaft vertically and downwards penetrating through the connecting frame is arranged at the output end of the second motor, a connecting plate is fixed to the bottom of the second rotating shaft, and a third motor is fixed to the connecting plate. The output end of the third motor is provided with a horizontal third rotating shaft of a lead screw structure, the third rotating shaft is sleeved with a connecting sleeve arranged on the connecting plate in a sliding mode through threads, the connecting sleeve is fixedly provided with a second air cylinder with the vertically-downward telescopic end, and the telescopic end of the second air cylinder is provided with a spot welding machine. The structure is mainly used for welding and processing a vehicle frame or other parts of an automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of welding vehicle frame components, in particular to a welding device. Background Art

[0002] During the automobile manufacturing process, many automobile parts and frames need to be welded, and one of the welding methods is spot welding. Spot welding is a common welding method and is currently very common in the processing and production of automobile parts and frames.

[0003] Before welding a car frame, it is necessary to place the frame on a welding table, and then spot weld the frame using a welding machine. Existing technologies, such as the patent document with the announcement number "CN218253523U" and the name "A Automobile Bracket Welding Device", disclose a welding device, which mainly includes a horizontal plate, a first telescopic part, and a welding assembly. The horizontal plate is arranged on a base, and the first telescopic part is indirectly arranged on the base, and the telescopic end of the first telescopic part is vertically downward and connected to the welding assembly. During welding, the operator places the frame on the horizontal plate, and then drives the welding assembly to move vertically through the first telescopic part, so that the frame can be welded. The device is also provided with an electric guide plate, and the first telescopic part is slidably arranged on the electric guide plate. The electric guide plate can drive the first telescopic part and the welding assembly to slide to the designated welding part for welding.

[0004] However, the above patent document has a considerable defect. Since the welding assembly can only achieve horizontal sliding and vertical movement through the electric guide plate and the first telescopic member, the range of position adjustment of the welding assembly is relatively small, and it is not possible to perform welding processing on different parts of the frame in a large range. When necessary, the operator needs to readjust the position of the frame on the cross plate, and then cooperate with the welding assembly for welding processing, resulting in an extremely limited welding processing range, which is not conducive to improving the welding processing efficiency of the frame. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies of the existing technology and propose a welding device for solving the technical problem mentioned in the background technology that some welding devices have a small position adjustment range for welding components, which is not conducive to multi-directional and efficient welding of the frame.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A welding device comprises a base, a first motor is fixed on the bottom of the base, the output end of the first motor is provided with a first rotating shaft vertically passing through the base and extending upward, a welding table is rotatably provided on the top of the first rotating shaft, and a mounting plate is fixed on the first rotating shaft, a first cylinder is rotatably provided on the mounting plate through a first hinge seat, the other end of the first cylinder is rotatably provided on the bottom of the welding table through a second hinge seat, and a clamping assembly is provided on the welding table, a connecting frame is fixed on one side of the base, a second motor is fixed on the connecting frame, the output end of the second motor is provided with a second rotating shaft vertically passing through the connecting frame downward, a connecting plate is fixed on the bottom of the second rotating shaft, a third motor is fixed on the connecting plate, the output end of the third motor is provided with a third rotating shaft which is a horizontal screw rod structure, a connecting sleeve is threadedly sleeved on the third rotating shaft and slidably provided on the connecting plate, a second cylinder with a telescopic end vertically downward is fixed on the connecting sleeve, and a spot welding machine is provided at the telescopic end of the second cylinder.

[0008] Working principle:

[0009] The operator places the vehicle frame or other parts that need spot welding on the welding table, and clamps and positions the vehicle frame using the clamping assembly.

[0010] Then start the second motor, which drives the second rotating shaft and the connecting plate to rotate, and then the connecting plate drives the third motor, the third rotating shaft, the second cylinder and the spot welder to rotate in the direction toward the frame. Then start the third motor, which drives the third rotating shaft to rotate, and the third rotating shaft drives the connecting sleeve, the second cylinder and the spot welder to slide above the frame. Then the second cylinder pushes the spot welder downward to perform spot welding on the frame.

[0011] When it is necessary to weld other parts of the frame, the operator can start the first motor, which drives the first rotating shaft, the welding table and the frame to rotate, and then rotates the other parts to be welded toward the spot welding machine. Because the frame is a special-shaped structure to a certain extent, in order to better cooperate with the spot welding machine for welding, the first cylinder is started at this time, and the first cylinder will push the welding table and the frame to rotate until they are rotated to a suitable welding position state.

[0012] After welding is completed, the operator releases the clamping assembly from the frame and finally removes the frame from the welding table.

[0013] The beneficial effects of the utility model are:

[0014] During the use of the utility model, the operator can use the first motor and the first rotating shaft to drive the welding table to rotate, thereby adjusting the position of the frame on the welding table; and use the first cylinder to push and rotate the welding table, thereby achieving another position adjustment of the frame on the welding table; thereafter, the second motor can also be used to indirectly drive the connecting plate and the spot welding machine to rotate, and the azimuth adjustment of the spot welding machine can be achieved to coordinate with the position adjustment of the welding table. The multiple adjustment methods can greatly expand the range of adjustment of the weldable parts of the frame, which is beneficial to improving the welding efficiency of the frame.

[0015] Furthermore, a first sliding groove extending horizontally is formed at the bottom of the connecting plate, and the top of the connecting sleeve is slidably arranged in the first sliding groove.

[0016] Furthermore, the clamping assembly includes a second sliding groove provided on the welding table, in which two opposing clamping plates are slidably provided. The clamping plates are both threadedly connected with bolts, which are used to be screwed in and abut against the inner wall of the second sliding groove.

[0017] Furthermore, clamping rubber gaskets are fixed on the opposite inner sides of the two clamping plates.

[0018] Furthermore, an intermediate plate is fixed to the bottom of the welding table, a fourth rotating shaft is rotatably provided on the intermediate plate, and the top of the first rotating shaft is fixedly connected to the fourth rotating shaft.

[0019] Furthermore, a plurality of support columns are fixed on the first rotating shaft, and the bottoms of the support columns are in sliding contact with the seat surface of the base.

[0020] Furthermore, a ball that can rotate relative to the support column is embedded in the bottom of the support column, and an annular groove centered on the axis of the first rotating shaft is opened on the seat surface of the base. The ball is adapted to the annular groove and can be rolled in the annular groove.

[0021] Furthermore, there are three support columns, and the three support columns are evenly distributed on the first rotating shaft with the axis of the first rotating shaft as the center.

[0022] Furthermore, the fourth rotating shaft is perpendicular to the axis of the first rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure enlarged in the middle;

[0025] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure enlarged at point C in the middle.

[0027] Explanation of the accompanying drawings: base 1, first motor 2, first rotating shaft 3, welding table 4, mounting plate 5, first articulated seat 6, first cylinder 7, second articulated seat 8, connecting frame 9, second motor 10, second rotating shaft 11, connecting plate 12, third motor 13, third rotating shaft 14, connecting sleeve 15, second cylinder 16, spot welder 17, first sliding groove 18, second sliding groove 19, clamping plate 20, bolt 21, clamping rubber gasket 22, intermediate plate 23, fourth rotating shaft 24, support column 25, ball 26, ring groove 27. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 and Figure 2 As shown, a welding device includes a base 1, a first motor 2 is fixed to the bottom of the base 1, an output end of the first motor 2 is provided with a first rotating shaft 3 that vertically passes through the base 1 and extends upward, a welding table 4 is rotatably provided on the top of the first rotating shaft 3, and a mounting plate 5 is fixed on the first rotating shaft 3, a first cylinder 7 is rotatably provided on the mounting plate 5 through a first hinge seat 6, the other end of the first cylinder 7 is rotatably provided on the bottom of the welding table 4 through a second hinge seat 8, and a clamping assembly is provided on the welding table 4, a connecting frame 9 is fixed to one side of the base 1, and a second motor 10 is fixed on the connecting frame 9, The output end of the second motor 10 is provided with a second rotating shaft 11 that extends vertically downward through the connecting frame 9. A connecting plate 12 is fixed to the bottom of the second rotating shaft 11, and a third motor 13 is fixed to the connecting plate 12. The output end of the third motor 13 is provided with a third rotating shaft 14 that is horizontal and has a screw structure. A connecting sleeve 15 is threadedly mounted on the third rotating shaft 14 and slides on the connecting plate 12. The bottom of the connecting plate 12 has a first horizontal sliding groove 18, and the top of the connecting sleeve 15 can slide through the first sliding groove 18. This sliding method is more stable and also helps to reduce production costs. A second cylinder 16 with a telescopic end that is vertically downward is fixed to the connecting sleeve 15. The telescopic end of the second cylinder 16 is equipped with a spot welder 17. The azimuth adjustment of the spot welder 17 is coordinated with the position adjustment of the welding table 4. The multiple adjustment methods can significantly expand the range of adjustment of the weldable parts of the frame, which is conducive to improving the welding efficiency of the frame.

[0030] like Figure 1 and Figure 3As shown, the clamping assembly includes a second sliding groove 19 provided on the welding table 4. Two opposing clamping plates 20 are slidably disposed within the second sliding groove 19. Bolts 21 are threadedly connected to the clamping plates 20. The bolts 21 are screwed into the clamping plates 20 to abut against the inner wall of the second sliding groove 19. The operator first loosens the bolts 21 and then slides the two clamping plates 20 within the second sliding groove 19, causing the two clamping plates 20 to slide toward each other from opposite sides of the vehicle frame and clamp the two sides of the frame. The operator then screws in the bolts 21, locking the two clamping plates 20 within the second sliding groove 19 and maintaining a stable clamping state for the vehicle frame. The two clamping plates 20 are fixed with clamping rubber gaskets 22 on their opposite inner sides. The frame is directly contacted and clamped by the clamping rubber gaskets 22, which is more conducive to protecting the shape and contour of the frame. The clamping rubber gaskets 22 mentioned here are relatively common. The clamping rubber gaskets 22 can be glued to the clamping plates 20 by glue. The clamping rubber gaskets 22 are relatively common rubber sheet structures with a certain degree of elasticity. Because they are relatively existing, they will not be described in detail.

[0031] like Figure 1 As shown, a middle plate 23 is fixed to the bottom of the welding table 4, and a fourth rotating shaft 24 is rotatably provided on the middle plate 23. The top of the first rotating shaft 3 is fixedly connected to the fourth rotating shaft 24. This connection between the first rotating shaft 3 and the fourth rotating shaft 24 is achieved, thereby achieving a rotational connection between the welding table 4 and the first rotating shaft 3. The fourth rotating shaft 24 is perpendicular to the axis of the first rotating shaft 3. This arrangement is primarily intended to prevent the welding table 4 from significantly deviating from the spot welder 17 during the rotation of the first rotating shaft 3.

[0032] like Figure 1 and Figure 4As shown, multiple support columns 25 are fixed to the first rotating shaft 3. The bottoms of these support columns 25 slide against the seat surface of the base 1. When the vehicle frame is placed on the welding table 4, some of the gravity is transferred to the base 1 through the welding table 4 and the support columns 25, thereby protecting the first motor 2 from large extrusion forces. Ball bearings 26 are embedded in the bottoms of these support columns 25 and can rotate relative to them. An annular groove 27 centered on the axis of the first rotating shaft 3 is formed on the seat surface of the base 1. The balls 26 fit into the annular groove 27 and can roll within the groove 27. The arrangement of the annular groove 27 and the balls 26 effectively converts sliding friction between the support columns 25 and the base 1 into rolling friction, further reducing the output load of the first motor 2 and further protecting the first motor 2. There are three support columns 25, and they are evenly distributed on the first rotating shaft 3, centered on the axis of the first rotating shaft 3. This quantity and distribution method not only helps to reduce the production cost, but also enables the support columns 25 to receive and transmit force more evenly.

[0033] Working principle:

[0034] The operator places the vehicle frame or other parts that need spot welding on the welding table 4, and clamps and positions the vehicle frame through the clamping assembly. Specifically, the operator loosens the bolt 21, and then slides the two clamping plates 20 in the second sliding groove 19, so that the two clamping plates 20 slide relative to each other from both sides of the vehicle frame and clamp both sides of the vehicle frame, and then screws in the bolt 21 to lock the two clamping plates 20 in the second sliding groove 19 and maintain a stable clamping state for the vehicle frame.

[0035] Then start the second motor 10, the second motor 10 drives the second rotating shaft 11 and the connecting plate 12 to rotate, and then the connecting plate 12 drives the third motor 13, the third rotating shaft 14, the second cylinder 16 and the spot welder 17 to rotate in the direction toward the frame, and then start the third motor 13, the third motor 13 drives the third rotating shaft 14 to rotate, and the third rotating shaft 14 drives the connecting sleeve 15, the second cylinder 16 and the spot welder 17 to slide above the frame, and then the second cylinder 16 pushes the spot welder 17 downward to perform spot welding on the frame.

[0036] When it is necessary to weld other parts of the frame, the operator can start the first motor 2, and the first motor 2 drives the first rotating shaft 3, the welding table 4 and the frame to rotate, and then rotates the other parts to be welded toward the spot welding machine 17. Because the frame is a special-shaped structure to a certain extent, at this time, in order to better cooperate with the spot welding machine 17 for welding, the first cylinder 7 is started at this time, and the first cylinder 7 will push the welding table 4 and the frame to rotate until they are rotated to a suitable welding position state.

[0037] After welding is completed, the operator releases the clamping assembly from the vehicle frame, and finally removes the vehicle frame from the welding table 4.

[0038] In this structure, the output end of the first motor 2 is a reversible motor structure. During use, the output end of the first motor 2 drives the first rotating shaft 3 to rotate at most one circle before rotating in the opposite direction, preventing the undesirable phenomenon of the wires connected to the first cylinder 7 being tangled when the first rotating shaft 3 drives the first cylinder 7 to rotate. During the welding process, a certain amount of welding slag will fall into the second sliding groove 19. The operator can use a metal scraper or a knife to promptly scrape off the welding slag in the second sliding groove 19, and can use a hair dryer to blow out a small amount of welding slag remaining in the second sliding groove 19. The implementation of this structure can be controlled by PLC program to achieve operation, which is more automated and intelligent. In the existing technology, the entire program control is also relatively easy to implement by ordinary technicians in this field.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A welding device, characterized in that: The invention comprises a base (1), a first motor (2) is fixed at the bottom of the base (1), an output end of the first motor (2) is provided with a first rotating shaft (3) vertically passing through the base (1) and extending upward, a welding platform (4) is rotatably provided on the top of the first rotating shaft (3), a mounting plate (5) is fixed on the first rotating shaft (3), a first cylinder (7) is rotatably provided on the mounting plate (5) through a first hinge seat (6), the other end of the first cylinder (7) is rotatably provided on the bottom of the welding platform (4) through a second hinge seat (8), and a clamping assembly is provided on the welding platform (4), a connecting frame (9) is fixed on one side of the base (1), and the connecting frame (9) A second motor (10) is fixed on the top, and a second rotating shaft (11) passing through the connecting frame (9) vertically downward is provided at the output end of the second motor (10), a connecting plate (12) is fixed at the bottom of the second rotating shaft (11), a third motor (13) is fixed on the connecting plate (12), and a third rotating shaft (14) which is horizontal and has a screw rod structure is provided at the output end of the third motor (13), a connecting sleeve (15) which is slidably arranged on the connecting plate (12) is threadedly sleeved on the third rotating shaft (14), and a second cylinder (16) with a telescopic end vertically downward is fixed on the connecting sleeve (15), and a spot welder (17) is provided at the telescopic end of the second cylinder (16).

2. A welding device according to claim 1, characterized in that: A first sliding groove (18) extending horizontally is formed at the bottom of the connecting plate (12), and the top of the connecting sleeve (15) is slidably inserted into the first sliding groove (18).

3. A welding device according to claim 1, characterized in that: The clamping assembly includes a second sliding groove (19) provided on the welding table (4), two opposite clamping plates (20) are slidably provided in the second sliding groove (19), and the clamping plates (20) are both threadedly connected with bolts (21), and the bolts (21) are used to abut against the inner wall of the second sliding groove (19) after being screwed in.

4. A welding device according to claim 3, characterized in that: Clamping rubber gaskets (22) are fixed on the opposite inner sides of the two clamping plates (20).

5. The welding device according to claim 1, characterized in that: An intermediate plate (23) is fixed to the bottom of the welding table (4), a fourth rotating shaft (24) is rotatably passed through the intermediate plate (23), and the top of the first rotating shaft (3) is fixedly connected to the fourth rotating shaft (24).

6. A welding device according to claim 1, characterized in that: A plurality of support columns (25) are fixed on the first rotating shaft (3), and the bottoms of the support columns (25) are in sliding contact with the seat surface of the base (1).

7. A welding device according to claim 6, characterized in that: A ball (26) is embedded in the bottom of the support column (25) and can rotate relative to the support column (25). An annular groove (27) centered on the axis of the first rotating shaft (3) is formed on the seat surface of the base (1). The ball (26) is adapted to the annular groove (27) and can be rolled in the annular groove (27).

8. A welding device according to claim 6, characterized in that: There are three support columns (25), and the three support columns (25) are evenly distributed on the first rotating shaft (3) with the axis of the first rotating shaft (3) as the center.

9. The welding device according to claim 5, characterized in that: The fourth rotating shaft (24) is perpendicular to the axis of the first rotating shaft (3).

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