Rotary repair welding tool for large auxiliary frame of automobile

Abstract

The utility model relates to the technical field of auxiliary frame repair welding devices, and particularly discloses a rotary repair welding tool for a large auxiliary frame of an automobile. The central shaft is rotatably arranged on the rack; the storage rack is arranged on the central shaft and is used for placing the auxiliary frame; the turntable is arranged on the central shaft; the pneumatic brake is arranged on the rack, and brake discs of the pneumatic brake are located on the two sides of the rotary disc and can clamp the rotary disc so as to brake the rotary disc; the positioning assembly is used for positioning the turntable; the limiting assembly is used for limiting the rotating stroke of the center shaft; by means of the auxiliary frame turnover device, the angle of the auxiliary frame can be conveniently and rapidly adjusted, the auxiliary frame can be placed at different placing angles so that workers can conduct repair welding operation, the repair welding efficiency of the auxiliary frame can be effectively improved, and the manual labor amount of turnover operation of the auxiliary frame can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of subframe repair welding devices, and in particular to a rotary repair welding fixture for a large automotive subframe. Background Technology

[0002] In the current automotive subframe manufacturing process, robots typically perform a large amount of welding work first, and then manual labor is used to repair a small number of welded areas on the frame, in order to ensure that the subframe as a whole has sufficient strength.

[0003] However, the frame size on the production site is about 1.2m*1.1m and the weight is over 40kg. During the manual welding process, after welding one side of the frame, multiple people work together to flip the frame over or use a bridge crane to lift and flip the frame over.

[0004] During the welding process of such a subframe, flipping the subframe is not convenient, which reduces the welding efficiency of the subframe. Utility Model Content

[0005] In view of the above problems, this utility model provides a rotary welding fixture for large automotive subframes, the purpose of which is to improve the convenience of flipping the subframe and improve the efficiency of manual welding of the subframe.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A rotary welding fixture for large automotive subframes is provided, comprising: a frame; a central shaft rotatably mounted on the frame; a shelf mounted on the central shaft for placing the subframe; a turntable mounted on the central shaft; a pneumatic brake mounted on the frame, with brake discs on both sides of the turntable for clamping and braking the turntable; a positioning assembly for positioning the turntable; and a limiting assembly for limiting the rotational stroke of the central shaft.

[0008] Furthermore, the positioning component includes: several positioning blocks, which are detachably mounted on the turntable along the circumferential direction of the turntable; positioning grooves, which are formed in the positioning blocks; and a positioning cylinder, the main body of which is fixedly mounted on the frame, and the piston rod of the positioning cylinder can move in and out of the positioning groove by telescopic movement.

[0009] Furthermore, the positioning component also includes: several sets of threaded holes, which are formed on the turntable along the circumferential direction of the turntable; and several mounting screws, which can be installed in the threaded holes by threaded connection, and the nuts of the mounting screws are used to press against the positioning block.

[0010] Furthermore, the limiting component includes: a cam, disposed at one end of the central shaft; a support rod, one end of which is hinged to the frame, and the other end of which is used to abut against the cam; and elastic support components disposed on both sides of the support rod for elastically supporting the support rod, thereby limiting the rotation angle of the support rod.

[0011] Furthermore, the elastic support component is a damping shock absorber, the main body of which is mounted on the frame, and the piston rod of which is used to abut the support rod.

[0012] Furthermore, the limiting component also includes a pulley, which is rotatably mounted on the cam and rolls in contact with the support rod.

[0013] The beneficial effects of this utility model are as follows: by using this utility model, the angle of the subframe can be adjusted conveniently and quickly, and the subframe can be placed at different angles for workers to perform welding repair work, which can effectively improve the welding efficiency of the subframe and reduce the amount of manual labor required for the subframe flipping operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the rotary welding fixture provided in the embodiments of this application.

[0015] Figure 2 Side view of the mounting structure of the limiting component provided in the embodiment of this application.

[0016] Figure 3 This is a side view of the mounting structure of the positioning block provided in an embodiment of this application.

[0017] Among them, 1. Frame; 2. Central shaft; 3. Shelf; 4. Turntable; 5. Pneumatic brake; 61. Positioning block; 62. Positioning groove; 63. Positioning cylinder; 64. Threaded hole; 71. Cam; 72. Support rod; 73. Elastic support component; 74. Pulley; 8. Subframe. Detailed Implementation

[0018] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0019] Reference Figure 1 As shown in the embodiment of this application, a rotary welding fixture for a large automotive subframe is disclosed, comprising: a frame 1; a central shaft 2 rotatably mounted on the frame 1; a shelf 3 mounted on the central shaft 2 for placing the subframe 8; a turntable 4 mounted on the central shaft 2; a pneumatic brake 5 mounted on the frame 1, the brake discs of the pneumatic brake 5 being located on both sides of the turntable 4, capable of clamping the turntable 4 to brake it; a positioning component for positioning the turntable 4; and a limiting component for limiting the rotational stroke of the central shaft 2.

[0020] In practical use, the subframe 8 to be repaired is placed on the shelf 3, and then the turntable 4 is manually rotated to rotate the subframe 8 to the required angle. Then the positioning component is activated to position the turntable 4, and the pneumatic brake 5 is activated to clamp the turntable 4, thus fixing the turntable 4 at the required angle for the staff to perform the repair welding operation.

[0021] By using this utility model, the angle of the subframe 8 can be adjusted conveniently and quickly, allowing the subframe 8 to be placed at different angles for workers to perform welding repair work. This can effectively improve the welding efficiency of the subframe 8 and reduce the amount of manual labor required for flipping the subframe 8.

[0022] It is worth mentioning that the subframe 8 can be lifted onto the shelf 3 by a bridge crane; the subframe 8 can be fixed onto the shelf 3 with the help of bolts.

[0023] It is understandable that the pneumatic brake 5 can be a disc brake / pneumatic brake / air-pressurized disc brake.

[0024] Reference Figure 3 As shown, the positioning assembly includes: several positioning blocks 61 and a turntable 4, which are detachably mounted on the turntable 4 along the circumferential direction; a positioning groove 62, which is opened in the positioning block 61; and a positioning cylinder 63, the main body of which is fixedly mounted on the frame 1, and the piston rod of the positioning cylinder 63 can enter / exit the positioning groove 62 by telescopic movement.

[0025] It is worth mentioning that the positioning groove 62 is opened along the radial direction of the turntable 4. After the turntable 4 is rotated to the required angle, the positioning cylinder 63 is activated first, and the piston rod of the positioning cylinder 63 is extended. The end of the piston rod of the positioning cylinder 63 enters the positioning groove 62, thereby restricting the rotation of the turntable 4 and positioning the turntable 4. Then, the turntable 4 is clamped by the pneumatic brake 5 to complete the fixation.

[0026] The air source for both the positioning cylinder 63 and the pneumatic brake 5 is provided by an air compressor.

[0027] Preferably, a pedal switch can also be installed on the frame 1. The pedal switch is electrically connected to the pneumatic brake 5 and the positioning cylinder 63. The operator can control the start and stop of the pneumatic brake 5 and the positioning cylinder 63 by pressing the pedal, which is more convenient and faster.

[0028] Preferably, the positioning component further includes: a plurality of threaded holes 64, which are formed on the turntable 4 along the circumferential direction; and a plurality of mounting screws, which can be installed in the threaded holes 64 by threaded connection, wherein the nuts of the mounting screws are used to press against the positioning block 61.

[0029] By installing different positioning blocks 61 at different positions in the circumferential direction of the turntable 4, the positioning requirements of the subframe 8 at different angles can be met, which can effectively improve the positioning efficiency of the subframe 8 at different angles.

[0030] Reference Figure 2 As shown, the limiting assembly includes: a cam 71, which is disposed at one end of the central shaft 2; a support rod 72, one end of which is hinged to the frame 1, and the other end of which is used to abut against the cam 71; and an elastic support member 73, which is disposed on both sides of the support rod 72 and is used to elastically support the support rod 72 to limit the rotation angle of the support rod 72.

[0031] By setting the support rod 72 to abut against the cam 71, the two sides of the support rod 72 are limited by the elastic support component 73, and the support rod 72 can only swing back and forth, thereby restricting the central shaft 2 to reciprocating rotation; thus limiting the rotation angle of the central shaft 2, limiting the central shaft 2 to continuous rotation, and preventing the central shaft 2 from continuously spinning after the positioning cylinder 63 and the pneumatic brake 5 fail.

[0032] Specifically, the elastic support component 73 is a damping shock absorber, the main body of which is mounted on the frame 1, and the piston rod of which is used to abut the support rod 72.

[0033] By installing damping shock absorbers on both sides of the support, the kinetic potential energy of the cam 71 is consumed by the damping built into the damping shock absorbers. This allows the central rotating shaft to be quickly stationary after the positioning cylinder 63 and the pneumatic brake 5 fail, thus playing a role in buffering and shock absorption, and allowing the operator to manually turn it.

[0034] Preferably, the limiting component further includes a pulley 74, which is rotatably mounted on the cam 71 and rolls in contact with the support rod 72; by setting the pulley to roll the cam 71 and the support rod 72 into contact, wear between the two is reduced and service life is improved.

[0035] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.

Claims

1. A rotary repair welding tool for a large automobile subframe, characterized in that, The utility model relates to a kind of centering device, including: Frame (1); Center shaft (2), rotatably arranged on frame (1); Storage rack (3), arranged on center shaft (2), for vice frame (8) placement; Rotating disc (4), arranged on center shaft (2); Pneumatic brake (5), arranged on frame (1), brake disc of pneumatic brake (5) is on both sides of rotating disc (4), can hold rotating disc (4), to brake rotating disc (4); Positioning assembly, for positioning rotating disc (4); Limiting assembly, for limiting the rotation stroke of center shaft (2).

2. The automobile large subframe rotary repair welding tooling according to claim 1, characterized in that, Positioning assembly includes: Several positioning blocks (61), along the circumferential direction of rotating disc (4), detachably mounted on rotating disc (4); Positioning slot (62), opened in positioning block (61); Positioning cylinder (63), the main body of positioning cylinder (63) is fixedly arranged on frame (1), the piston rod of positioning cylinder (63) can enter / exit positioning slot (62) by extension and retraction.

3. The automobile large subframe rotary repair welding tooling according to claim 2, characterized in that, Positioning assembly further includes: Several groups of threaded holes (64), along the circumferential direction of rotating disc (4), are opened on rotating disc (4); Several mounting screws, can be installed in threaded hole (64) by threaded connection, and the nut of mounting screw is used to press the positioning block (61).

4. The automobile large subframe rotary repair welding tooling according to claim 1, characterized in that, Limiting assembly includes: Cam (71), arranged on one end of center shaft (2); Supporting rod (72), one end of supporting rod (72) is hingedly installed on frame (1), the other end of supporting rod (72) is used to resist cam (71); Elastic supporting component (73), arranged on both sides of supporting rod (72), for elastically supporting supporting rod (72), to limit the rotation angle of supporting rod (72).

5. The automobile large subframe rotary repair welding tooling according to claim 4, characterized in that, Elastic supporting component (73) is damping shock absorber, the main body of damping shock absorber is arranged on frame (1), the piston rod of damping shock absorber is used to resist supporting rod (72).

6. The automobile large subframe rotary repair welding tooling according to claim 4, characterized in that, Limiting assembly further includes: pulley (74), rotatably arranged on cam (71), and rolling contact with supporting rod (72).

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