A vehicle welding fixture

Abstract

The utility model relates to the technical field of automobile manufacturing, especially to a vehicle welding fixture, including fixed base, still including support seat, elevating seat, pneumatic clamp, first air cylinder and connecting plate, wherein, support seat fixedly arranged at the top of fixed base, elevating seat is along vertical sliding to set up in one side of support seat, one end of pneumatic clamp is fixedly arranged on elevating seat, and the other end is with the top of support seat up and down cooperation, to be used for clamping work piece, by setting first air cylinder drive two connecting plate vertical overturn to make elevating seat move up and down, to realize the adjustment of clamping height, when needing to change the clamping height of fixture, do not need to replace the whole fixture, the process is relatively simple and convenient, effectively improve production efficiency, at the same time, when the welding passageway below the work piece to be welded is narrow, can through the mode of adjusting the clamping height and raise work piece, to make the vertical width of welding passageway increase, the welding torch is convenient to enter welding passageway and carry out welding operation.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a vehicle welding fixture. Background Technology

[0002] Welding is an indispensable processing technology in automobile manufacturing. Depending on the model, different types of welding fixtures are required to assist in welding. Welding fixtures are fixed components set on welding fixtures to fix the workpiece, such as the new type of welding fixture disclosed in CN107775239A.

[0003] As described above, traditional vehicle welding fixtures, once installed on welding tooling, typically have a fixed clamping height. When the required clamping height needs to be changed, the entire fixture must be replaced to alter the clamping height. This replacement process is cumbersome and inconvenient, hindering production efficiency. Utility Model Content

[0004] In view of this, the present invention proposes a vehicle welding fixture, which uses a first cylinder to drive two connecting plates to rotate vertically so that the lifting seat moves up and down to adjust the clamping height. When it is necessary to change the clamping height of the fixture, it is not necessary to replace the entire fixture, making the process simple and convenient and effectively improving production efficiency. At the same time, when the welding channel below the workpiece to be welded is narrow, the workpiece can be raised by adjusting the clamping height to increase the vertical width of the welding channel, making it easier for the welding torch to enter the welding channel for welding operations.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a vehicle welding fixture, including a fixed base, a support base, a lifting base, a pneumatic clamp, a first cylinder, and a connecting plate.

[0007] The support is fixedly mounted on the top of the fixed base;

[0008] The lifting seat is slidably mounted vertically on one side of the support seat;

[0009] One end of the pneumatic clamp is fixedly mounted on the lifting seat, and the other end is engaged with the top of the support seat to clamp the workpiece.

[0010] The first cylinder is located on the side of the support seat away from the lifting seat. The cylinder body of the first cylinder is hinged to the top of the fixed base. The output end of the first cylinder passes through the support seat and extends to the bottom of the lifting seat.

[0011] The connecting plate is provided in two pairs, one above the other. One end of the upper connecting plate is hinged to the bottom of the lifting seat, and one end of the lower connecting plate is hinged to the top of the fixed base. The opposite ends of the two connecting plates are hinged to the output end of the first cylinder.

[0012] The first cylinder is used to drive the two connecting plates to rotate vertically, so that the lifting seat moves up and down.

[0013] Based on the above technical solutions, preferably, the support base is provided with a through hole running horizontally through it, and the output end of the first cylinder passes through the through hole.

[0014] Based on the above technical solutions, a preferred embodiment also includes a limiting mechanism, wherein...

[0015] The limiting mechanism is located on the side of the connecting plate away from the support seat;

[0016] One end of the limiting mechanism is fixed to the top of the fixed base, and the other end selectively abuts against the side of the connecting plate.

[0017] Based on the above technical solutions, preferably, the limiting mechanism includes a threaded seat and a limiting bolt, wherein,

[0018] The threaded seat is fixed to the fixed base;

[0019] One end of the limiting bolt passes through the threaded seat laterally and selectively abuts against the side end of the connecting plate; the limiting bolt is screwed to the threaded seat.

[0020] Based on the above technical solutions, preferably, the system also includes a guide rail and a slider, wherein...

[0021] The guide rail and the slider are disposed between the support base and the lifting base;

[0022] One guide rail is provided on each side of the through hole. The two guide rails are parallel and fixed vertically to the side of the support. A slider is slidably provided on each guide rail.

[0023] The end of the slider away from the guide rail is fixedly connected to the lifting seat.

[0024] Based on the above technical solutions, preferably, the lifting seat includes a base plate and an extension arm, wherein,

[0025] The base plate is fixedly connected to the lifting seat, and the bottom of the base plate is hinged to the upper end of the connecting plate above it.

[0026] One end of the extension arm is fixedly connected to the base plate, and the other end is fixedly connected to the pneumatic clamp.

[0027] Based on the above technical solutions, preferably, the lifting seat further includes a pad, wherein,

[0028] The pad is detachably disposed on the top of the substrate.

[0029] Based on the above technical solutions, preferably, the lifting seat further includes a limiting block, an upper support, and a lower support, wherein,

[0030] The limiting block is fixed to the side of the base plate;

[0031] One end of the upper bracket is fixedly connected to the side of the support base, and the other end extends to the top of the limiting block;

[0032] One end of the lower bracket is fixedly connected to the side of the support seat, and the other end extends to the bottom of the limiting block.

[0033] Based on the above technical solution, preferably, the lifting seat further includes a rubber block, wherein...

[0034] One rubber block is fixed on each of the opposite ends of the lower bracket and the upper bracket;

[0035] The limiting block is positioned between the two rubber blocks.

[0036] Based on the above technical solutions, preferably, the pneumatic clamp includes a housing, a second cylinder, a rotating shaft, a clamp arm, a hinge plate, and a pin, wherein,

[0037] The outer casing is fixed to the end of the extension arm away from the substrate;

[0038] The second cylinder is fixedly mounted at the bottom of the housing, and the output end of the second cylinder extends upward through the bottom of the housing to the interior of the housing;

[0039] The rotating shaft passes horizontally through the top of the housing and is rotatably connected, with both ends of the rotating shaft fixedly connected to one end of the clamp arm;

[0040] The end of the clamp arm away from the pivot extends above the support base;

[0041] The hinge plate is disposed inside the outer shell, one end of the hinge plate is fixedly connected to the rotating shaft, and the other end is provided with a waist-shaped hole through the transverse direction.

[0042] The pin passes horizontally through the waist-shaped hole and is slidably connected, and the pin is fixed to the upper end of the output end of the second cylinder.

[0043] The vehicle welding fixture of this utility model has the following advantages over the prior art:

[0044] (1) By setting the first cylinder to drive the two connecting plates to rotate vertically so that the lifting seat can move up and down, the clamping height can be adjusted. When the clamping height of the fixture needs to be changed, the fixture does not need to be replaced as a whole. The process is relatively simple and convenient, which effectively improves production efficiency. At the same time, when the welding channel below the workpiece to be welded is narrow, the workpiece can be raised by adjusting the clamping height to increase the vertical width of the welding channel, so that the welding gun can enter the welding channel for welding operations.

[0045] (2) By setting one end of the limiting mechanism to selectively abut against the side of the connecting plate, it is easy to limit the connecting plate to fix the posture of the connecting plate after flipping, so as to keep the height of the lifting seat stable. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0047] Figure 1 This is a perspective view of a vehicle welding fixture according to the present invention;

[0048] Figure 2 This is a perspective view of the guide rail of this utility model;

[0049] Figure 3 This is a perspective view of the limiting block of this utility model;

[0050] Figure 4 This is a side view of a vehicle welding fixture according to the present invention;

[0051] Figure 5 This is a sectional view of the present invention along line AA;

[0052] Figure 6 This is a partial cross-sectional view of the pneumatic clamp of this utility model;

[0053] In the diagram: 1. Fixed base; 2. Support seat; 3. Lifting seat; 4. Pneumatic clamp; 5. First cylinder; 6. Connecting plate; 7. Limiting mechanism; 8. Guide rail; 9. Slider; 31. Base plate; 32. Extension arm; 33. Pad; 34. Limiting block; 35. Upper bracket; 36. Lower bracket; 37. Rubber block; 41. Outer shell; 42. Second cylinder; 43. Rotating shaft; 44. Clamp arm; 45. Hinge plate; 46. Pin; 71. Threaded seat; 72. Limiting bolt; 201. Through hole; 401. Waist-shaped hole. Detailed Implementation

[0054] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0055] like Figure 1-6 As shown, a vehicle welding fixture of this utility model includes a fixed base 1, a support base 2, a lifting base 3, a pneumatic clamp 4, a first cylinder 5, and a connecting plate 6.

[0056] The support seat 2 is fixedly installed on the top of the fixed base 1. Several ribs are provided between the support seat 2 and the fixed base 1 to increase the strength of the support seat 2 and the fixed base 1. Several bolt mounting holes are provided vertically on the fixed base 1 to install bolts to fix the fixture on the welding fixture.

[0057] The lifting seat 3 is vertically slidably mounted on one side of the support seat 2; one end of the pneumatic clamp 4 is fixedly mounted on the lifting seat 3, and the other end is engaged with the top of the support seat 2 to clamp the workpiece; when the top of the lifting seat 3 supports the workpiece, one end of the pneumatic clamp 4 flips towards the top of the lifting seat 3 to clamp and fix the workpiece on the lifting seat 3.

[0058] The first cylinder 5 is located on the side of the support 2 away from the lifting seat 3. The cylinder body of the first cylinder 5 is hinged to the top of the fixed base 1. The output end of the first cylinder 5 passes through the support 2 and extends to the bottom of the lifting seat 3. There are two connecting plates 6 that are opposite each other. One end of the upper connecting plate 6 is hinged to the bottom of the lifting seat 3, and one end of the lower connecting plate 6 is hinged to the top of the fixed base 1. The opposite ends of the two connecting plates 6 are hinged to the output end of the first cylinder 5. The first cylinder 5 is used to drive the two connecting plates 6 to rotate vertically so that the lifting seat 3 moves up and down.

[0059] When welding products, if the current welding height cannot meet the welding requirements of subsequent products, the clamping height needs to be adjusted. In the existing technology, the clamping height is usually adjusted by replacing the welding fixture with a taller one, which is a complicated and inconvenient process.

[0060] Compared with the prior art, the vehicle welding fixture of this utility model drives two connecting plates 6 to rotate vertically through the first cylinder 5, so that the lifting seat 3 moves upward. The lifting seat 3 drives the pneumatic clamp 4 to rise, thereby realizing the adjustment of the clamping height. The process is relatively simple and convenient, which can effectively improve production efficiency. At the same time, it can also widen the welding channel below the product to facilitate welding. That is, when the welding channel below the workpiece to be welded is narrow, the workpiece can be raised by adjusting the clamping height to increase the vertical width of the welding channel, so as to facilitate the welding torch to enter the welding channel for welding operations.

[0061] In the above structure, to prevent interference between the first cylinder 5 and the support seat 2 during its extension and retraction, a through hole 201 is provided transversely on the support seat 2, such as... Figure 2 and Figure 5 As shown, the width and height of the through hole 201 are both greater than the diameter of the first cylinder 5. After the cylinder end of the first cylinder 5 is hinged to the fixed base 1, the output end of the first cylinder 5 is passed through the through hole 201 and then hinged to the connecting plate 6. When the first cylinder 5 extends or retracts, the output shaft of the first cylinder 5 moves inside the through hole 201.

[0062] In addition, such as Figure 2 As shown, the two connecting plates 6 form a hinge structure. To improve the stability of the hinge structure after deformation, a limiting mechanism 7 is set on the side of the connecting plate 6 away from the support seat 2. One end of the limiting mechanism 7 is fixed to the top of the fixed base 1, and the other end selectively abuts against the side end of the connecting plate 6. By setting one end of the limiting mechanism 7 to selectively abut against the side end of the connecting plate 6, it is convenient to limit the connecting plate 6, so as to fix the posture of the connecting plate 6 after flipping, improve the stability of the hinge structure after deformation, and thus keep the height of the lifting seat 3 stable, so that the clamping height of the subsequent uniform products is more uniform.

[0063] Specifically, the limiting mechanism 7 includes a threaded seat 71 and a limiting bolt 72, wherein, as Figure 2 As shown, the threaded seat 71 is fixed on the fixed base 1; one end of the limiting bolt 72 passes through the threaded seat 71 laterally and selectively abuts against the side end of the connecting plate 6, and the limiting bolt 72 is screwed to the threaded seat 71; the limiting bolt 72 is screwed on so that one end abuts against the connecting plate 6, thereby limiting the connecting plate 6.

[0064] In a vehicle welding fixture of this utility model, a guide rail 8 and a slider 9 are further provided between the support seat 2 and the lifting seat 3, wherein, for example Figure 2As shown, one guide rail 8 is provided on each side of the through hole 201. The two guide rails 8 are parallel and fixed vertically on the side of the support 2. A slider 9 is slidably provided on each guide rail 8. The end of the slider 9 away from the guide rail 8 is fixedly connected to the lifting seat 3. When the first cylinder 5 drives the two connecting plates 6 to rotate vertically so that the lifting seat 3 moves up and down, the slider 9 slides vertically on the guide rail 8 for lifting and guiding.

[0065] In a vehicle welding fixture of the present invention, the lifting seat 3 includes a base plate 31, an extension arm 32, and a pad 33.

[0066] Among them, such as Figure 3 As shown, the base plate 31 is fixedly connected to the lifting seat 3, and the bottom of the base plate 31 is hinged to the upper end of the connecting plate 6 above it; one end of the extension arm 32 is fixedly connected to the base plate 31, and the other end is fixedly connected to the pneumatic clamp 4. The extension arm 32 is used to position the pneumatic clamp 4 on the side of the support seat 2, which facilitates the arrangement of the pneumatic clamp 4; the pad block 33 is detachably set on the top of the base plate 31 for easy replacement.

[0067] In addition, such as Figure 3 As shown, the lifting seat 3 also includes a limiting block 34, an upper bracket 35, a lower bracket 36, and a rubber block 37.

[0068] The limiting block 34 is fixed to the side of the base plate 31; one end of the upper bracket 35 is fixedly connected to the side of the support seat 2, and the other end extends above the limiting block 34; one end of the lower bracket 36 is fixedly connected to the side of the support seat 2, and the other end extends below the limiting block 34; one rubber block 37 is fixed on each of the opposite ends of the lower bracket 36 and the upper bracket 35; the limiting block 34 is disposed between the two rubber blocks 37.

[0069] When the lifting seat 3 moves up and down, the limit block 34 moves between the upper support 35 and the lower support 36 to limit the travel and prevent derailment.

[0070] In a vehicle welding fixture of this utility model, the pneumatic clamp 4 includes a housing 41, a second cylinder 42, a rotating shaft 43, a clamp arm 44, a hinge plate 45, and a pin 46.

[0071] Among them, such as Figure 6As shown, the outer casing 41 is fixed to the end of the extension arm 32 away from the base plate 31; the second cylinder 42 is fixedly disposed at the bottom of the outer casing 41, and the output end of the second cylinder 42 extends upward through the bottom of the outer casing 41 to the interior of the outer casing 41; the rotating shaft 43 extends horizontally through the top of the outer casing 41 and is rotatably connected, and the two ends of the rotating shaft 43 are fixedly connected to one end of the clamp arm 44; the end of the clamp arm 44 away from the rotating shaft 43 extends to the top of the support seat 2; the hinge plate 45 is disposed inside the outer casing 41, one end of the hinge plate 45 is fixedly connected to the rotating shaft 43, and the other end is provided with a waist-shaped hole 401 extending horizontally along the upper edge; the pin 46 extends horizontally through the waist-shaped hole 401 and is slidably connected, and the pin 46 is fixed to the upper end of the output end of the second cylinder 42.

[0072] When the second cylinder 42 extends or retracts, its output end drives the pin 46 to move up and down. During this process, the pin 46 changes position in the oblong hole 401 and forces the hinge plate 45 to flip up and down. During the flipping process, the hinge plate 45 drives the rotating shaft 43 to rotate, and the rotating shaft 43 drives the clamp arm 44 to flip up and down to achieve the clamping and releasing actions. In the clamping state, as Figure 6 As shown, the end of the hinge plate 45 away from the pivot 43 extends obliquely upward; conversely, in the released state, the end of the hinge plate 45 away from the pivot 43 extends obliquely downward, which is not shown in the illustration.

[0073] The method of using the vehicle welding fixture of this utility model is as follows:

[0074] When the clamping height needs to be changed, the first cylinder 5 drives the two connecting plates 6 to flip vertically, so that one end of the upper connecting plate 6 pulls the lifting seat 3 to move up and down, thereby adjusting the height. When the lifting seat 3 is in place, the limit bolt 72 is screwed on so that one end of it abuts against one side of the connecting plate 6, which is used to limit the connecting plate 6 and maintain the posture of the connecting plate 6 after flipping.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle welding fixture, comprising a fixed base (1), characterized in that: It also includes a support base (2), a lifting base (3), a pneumatic clamp (4), a first cylinder (5), and a connecting plate (6), wherein, The support seat (2) is fixedly disposed on the top of the fixed base (1); The lifting seat (3) is vertically slidably disposed on one side of the support seat (2); One end of the pneumatic clamp (4) is fixedly mounted on the lifting seat (3), and the other end is engaged with the top of the support seat (2) to clamp the workpiece. The first cylinder (5) is located on the side of the support seat (2) away from the lifting seat (3). The cylinder body of the first cylinder (5) is hinged to the top of the fixed base (1). The output end of the first cylinder (5) passes through the support seat (2) and extends to the bottom of the lifting seat (3). The connecting plate (6) is provided in two pairs, one above the other. One end of the upper connecting plate (6) is hinged to the bottom of the lifting seat (3), and one end of the lower connecting plate (6) is hinged to the top of the fixed base (1). The opposite ends of the two connecting plates (6) are hinged to the output end of the first cylinder (5). The first cylinder (5) is used to drive the two connecting plates (6) to rotate vertically so that the lifting seat (3) moves up and down.

2. The vehicle welding fixture as described in claim 1, characterized in that: The support base (2) has a through hole (201) extending laterally, and the output end of the first cylinder (5) passes through the through hole (201).

3. The vehicle welding fixture as described in claim 1, characterized in that: It also includes a limiting mechanism (7), wherein, The limiting mechanism (7) is located on the side of the connecting plate (6) away from the support seat (2); One end of the limiting mechanism (7) is fixed to the top of the fixed base (1), and the other end selectively abuts against the side of the connecting plate (6).

4. A vehicle welding fixture as described in claim 3, characterized in that: The limiting mechanism (7) includes a threaded seat (71) and a limiting bolt (72), wherein, The threaded seat (71) is fixed on the fixed base (1); One end of the limiting bolt (72) passes through the threaded seat (71) laterally and selectively abuts against the side end of the connecting plate (6). The limiting bolt (72) is screwed to the threaded seat (71).

5. A vehicle welding fixture as described in claim 2, characterized in that: It also includes a guide rail (8) and a slider (9), wherein, The guide rail (8) and the slider (9) are disposed between the support seat (2) and the lifting seat (3); One guide rail (8) is provided on each side of the through hole (201). The two guide rails (8) are parallel and fixed vertically on the side of the support (2). A slider (9) is slidably provided on each guide rail (8). The end of the slider (9) away from the guide rail (8) is fixedly connected to the lifting seat (3).

6. A vehicle welding fixture as described in claim 5, characterized in that: The lifting base (3) includes a base plate (31) and an extension arm (32), wherein, The base plate (31) is fixedly connected to the lifting seat (3), and the bottom of the base plate (31) is hinged to the upper end of the connecting plate (6) above. One end of the extension arm (32) is fixedly connected to the base plate (31), and the other end is fixedly connected to the pneumatic clamp (4).

7. A vehicle welding fixture as described in claim 6, characterized in that: The lifting seat (3) also includes a pad (33), wherein, The pad (33) is detachably disposed on the top of the substrate (31).

8. A vehicle welding fixture as described in claim 7, characterized in that: The lifting seat (3) further includes a limiting block (34), an upper bracket (35), and a lower bracket (36), wherein, The limiting block (34) is fixed to the side of the base plate (31); One end of the upper bracket (35) is fixedly connected to the side of the support base (2), and the other end extends to the top of the limiting block (34); One end of the lower bracket (36) is fixedly connected to the side of the support base (2), and the other end extends to the bottom of the limiting block (34).

9. A vehicle welding fixture as described in claim 8, characterized in that: The lifting seat (3) is also covered with a rubber block (37), wherein, One rubber block (37) is fixed on each of the opposite ends of the lower bracket (36) and the upper bracket (35); The limiting block (34) is disposed between the two rubber blocks (37).

10. A vehicle welding fixture as described in claim 6, characterized in that: The pneumatic clamp (4) includes a housing (41), a second cylinder (42), a rotating shaft (43), a clamp arm (44), a hinge plate (45), and a pin (46), wherein, The outer casing (41) is fixed to one end of the extension arm (32) away from the base plate (31); The second cylinder (42) is fixedly disposed at the bottom of the housing (41), and the output end of the second cylinder (42) extends upward through the bottom of the housing (41) to the interior of the housing (41); The rotating shaft (43) passes horizontally through the top of the outer shell (41) and is rotatably connected. The two ends of the rotating shaft (43) are fixedly connected to one end of the clamp arm (44). The end of the clamp arm (44) away from the pivot (43) extends above the support base (2); The hinge plate (45) is disposed inside the outer shell (41). One end of the hinge plate (45) is fixedly connected to the rotating shaft (43), and the other end is provided with a waist-shaped hole (401) through the transverse direction. The pin (46) passes horizontally through the waist-shaped hole (401) and is slidably connected, and the pin (46) is fixed to the upper end of the output end of the second cylinder (42).

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