Silencer spot welding multidirectional moving structure

Abstract

The silencer spot welding multi-directional moving structure is used for welding and positioning silencer parts and comprises a horizontal moving mechanism, a lifting mechanism is slidably mounted on the horizontal moving mechanism, a workbench is mounted at the top of the lifting mechanism, a rotating motor is arranged on the workbench and connected with a rotating shaft, and the rotating shaft is connected with a motor. A clamping mechanism is fixed to the end, opposite to the rotating motor, of the rotating shaft, a clamping part is arranged on the side, opposite to the rotating shaft, of the clamping mechanism, a silencer is clamped by the clamping part of the clamping mechanism, a positioning structure is further arranged on the workbench, a U-shaped groove is formed in the positioning structure, and the U-shaped groove is matched with the clamping part of the clamping mechanism. And the peripheral side of the silencer is in contact with the interior of the U-shaped groove for positioning. Horizontal and vertical movement and automatic rotating clamping of the silencer pipe fitting are achieved through all the air cylinders and the rotating electric mechanism, welding and fixing of the silencer pipe fitting and the steel wool ring are improved, and therefore the welding efficiency and precision are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of muffler processing devices, in particular to a muffler spot welding multi-directional moving structure. Background Art

[0002] As an important part of the rear of a car, the structural design of the car muffler has a significant impact on the vehicle's driving noise. It is generally designed in a long tube shape, and its end needs to be welded and fixed with a steel wool ring. Since the end of the muffler needs to be welded at four points at 90 degrees, the traditional fixed fixture cannot meet the needs of fast and efficient welding operations.

[0003] The widely used muffler welding molds in the market mainly use mechanical structures to fix the muffler. During the clamping process, the muffler cannot be directly moved or rotated. This requires manual loosening of the clamp, finding the next welding point, and re-clamping. The operation is cumbersome, inefficient, and increases labor costs.

[0004] Therefore, it is necessary to provide a multi-directional movable clamping structure for muffler spot welding, which can directly rotate and move the muffler in a clamped state, improve welding efficiency, and reduce labor costs. Summary of the invention

[0005] The present invention provides a muffler spot welding multi-directional moving structure to solve the problems raised in the above background technology.

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

[0007] A multi-directional moving structure for spot welding of a silencer comprises a welding positioning frame, a horizontal moving mechanism is installed on the welding positioning frame, a lifting mechanism is slidably installed on the horizontal moving mechanism, a workbench is installed on the top of the lifting mechanism, a rotating motor is provided on the workbench, the rotating motor is connected to a rotating shaft, a clamping mechanism is fixed to the end of the rotating shaft opposite to the rotating motor, the side of the clamping mechanism opposite to the rotating shaft is a clamping part, the clamping part of the clamping mechanism clamps the silencer, a positioning structure is also provided on the workbench, and a U-shaped groove is provided on the positioning structure, the rotating motor (2) drives the rotating shaft to rotate, and the clamping mechanism (4) rotates with the rotating shaft, the silencer (5) is fixed on the workbench by the clamping part, and the outer peripheral side of the silencer (5) contacts with the inside of the U-shaped groove for positioning.

[0008] Preferably, the horizontal movement mechanism comprises a push cylinder installed in the middle of the upper part of the welding positioning frame, two slide rails are symmetrically installed on the welding positioning frame on both sides of the push cylinder, and sliders are slidably installed on the two slide rails. The telescopic direction of the push cylinder is the same as the sliding direction of the slider.

[0009] Preferably, the lifting mechanism comprises a moving platform connected to and mounted on the top of the slider, a connecting plate is provided at the bottom of the moving platform, and the telescopic end of the pushing cylinder is fixedly connected to the connecting plate, and a plurality of lifting cylinders are provided on the top of the moving platform, and the workbench is connected to the telescopic end of the top of the lifting cylinder. The pushing cylinder pushes and pulls the connecting plate, thereby driving the moving platform to move horizontally along the slide rail, and the lifting cylinder drives the workbench to move vertically, thereby realizing the vertical and horizontal position adjustment of the muffler clamped by the clamping mechanism.

[0010] Preferably, the workbench is provided with two bearing seats, the rotating shaft is movably mounted on the bearing seats, a transmission wheel 1 is fixed on the rotating shaft between the two bearing seats, the rotating motor is mounted on the workbench on one side of the transmission wheel 1, a transmission wheel 2 is fixed on the output shaft of the rotating motor, and a transmission belt is connected between the transmission wheel 1 and the transmission wheel 2. The rotating motor drives the rotating shaft to rotate through the transmission belt, thereby driving the clamping mechanism and the muffler to rotate.

[0011] Preferably, the clamping mechanism includes a pneumatic clamping jaw, the pneumatic clamping jaw is provided with two clamping ends arranged opposite to each other, clamping blocks are installed on opposite sides of the two clamping ends, a connecting block 1 is provided on the side of the pneumatic clamping jaw opposite to the clamping block, a connecting block 2 is provided on the end of the rotating shaft close to the pneumatic clamping jaw, and the connecting block 1 is fixedly connected with the connecting block 2 by threads. The pneumatic clamping jaw is also called a finger cylinder, which is an existing mature technology and will not be described in detail here.

[0012] Preferably, the two clamping blocks are provided with arc grooves on opposite sides, and the curvature of the two arc grooves matches the curvature of the outer peripheral surface of the muffler. The clamping block and the pneumatic clamp are detachably connected by bolts, and by replacing clamping blocks with different curvatures, mufflers with different diameters can be clamped.

[0013] Preferably, a cushion block is provided on the side of the pneumatic clamp opposite to the connecting block, and a mounting opening is provided on the side of the cushion block facing the muffler, a fixing block is installed in the mounting opening, and the fixing block is butt-connected with the end of the muffler. It serves to position the muffler toward one end of the clamping mechanism, and the fixing block is fixed to the cushion block by bolts, and mufflers of different diameters can be positioned and connected by replacing fixing blocks of different diameters.

[0014] Preferably, the positioning structure includes a plurality of support frames mounted on the workbench, the U-shaped groove is located in the middle of the support frame, the U-shaped groove is provided with a plurality of threaded holes, and the threaded holes are detachably provided with positioning wheels. Each support frame is arranged front and back in the same straight line, and the muffler is placed in the U-shaped groove in the same straight line. The support frame plays a supporting role to prevent the position of the muffler from being offset during the processing.

[0015] Preferably, the outer side of the positioning wheel is provided with a rubber layer, and rollers are provided at the four corners of the bottom of the welding positioning frame. The positioning wheel is used to locate the position of the welding end of the muffler, and can rotate with the positioning wheel when the muffler rotates, to prevent the outer side of the muffler from directly contacting and rotating with the support frame, resulting in scratches on the outer side of the muffler. The size of the positioning wheel can be replaced according to the size of the muffler, thereby adapting to the positioning of mufflers of different sizes. The rollers facilitate the movement of the entire device.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The invention realizes a structure capable of simultaneous multi-directional movement for muffler spot welding, and drives the slider to move on the slide rail by pushing the cylinder to work by telescoping, thereby realizing horizontal movement of the muffler, and drives the workbench to move vertically by telescoping the lifting cylinder, thereby realizing vertical adjustment of the muffler. At the same time, the cooperation of the rotating motor and the rotating shaft enables the muffler to be rotated after being clamped, so that the operator can locate the welding point conveniently, and avoids the cumbersome operation of manually loosening the clamp and adjusting the position of the traditional fixed clamp, thereby reducing the labor cost and improving the welding efficiency. That is, by setting the rotating motor, the rotating shaft, the clamping mechanism and the positioning structure, the effect of automatic rotation clamping and multi-directional movement of the muffler is realized, that is, the rotating motor drives the rotating shaft to rotate, and the clamping mechanism rotates with the rotating shaft at the same time, and the muffler is flexibly fixed on the workbench by the clamping part, and the positioning structure provided with a U-shaped groove is used to make the outer peripheral side of the muffler contact with the inside of the U-shaped groove to realize precise positioning. In addition, by installing the positioning wheel of the corresponding size, it can be applicable to mufflers of different sizes, and solves the problems of low efficiency and low precision of manual clamping and rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the horizontal moving mechanism and the lifting mechanism of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of each device on the top of the workbench of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0022] Figure 5 It is a schematic diagram of the cushion block and the fixing block of the present invention;

[0023] Figure 6 It is a schematic diagram of the positioning structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the silencer and the steel wool ring of the present invention;

[0025] 1. Workbench; 2. Rotating motor; 3. Rotating shaft; 4. Clamping mechanism; 5. Muffler; 6. Steel wool ring; 7. Positioning structure; 8. U-shaped groove; 9. Bearing seat; 10. Transmission wheel 1; 11. Transmission wheel 2; 12. Transmission belt; 13. Connecting block 1; 14. Pneumatic clamp; 15. Clamping end; 16. Clamping block; 17. Pad; 18. Fixed block; 19. Support frame; 20. Positioning wheel; 21. Mounting port; 22. Arc groove; 23. Welding positioning frame; 24. Moving table; 25. Pushing cylinder; 26. Slide rail; 27. Sliding block; 28. Lifting cylinder; 29. ​​Connecting plate; 30. Roller; 31. Horizontal moving mechanism; 32. Lifting mechanism. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] Reference Figure 1-7 A multi-directional movable structure for spot welding of a silencer comprises a welding positioning frame 23, a horizontal moving mechanism 31 is installed on the welding positioning frame 23, a lifting mechanism 32 is slidably installed on the horizontal moving mechanism 31, a workbench 1 is installed on the top of the lifting mechanism 32, a rotating motor 2 is provided on the workbench 1, the rotating motor 2 is connected to a rotating shaft 3, a clamping mechanism 4 is fixed to the end of the rotating shaft 3 opposite to the rotating motor 2, the clamping mechanism 4 is on the side opposite to the rotating shaft 3 as a clamping portion, the clamping portion of the clamping mechanism 4 clamps a silencer 5, a positioning structure 7 is also provided on the workbench 1, and a U-shaped groove 8 is provided on the positioning structure 7, and the outer peripheral side of the silencer 5 is contacted with the inside of the U-shaped groove 8 for positioning.

[0028] The horizontal moving mechanism 31 includes a push cylinder 25 installed in the middle of the upper part of the welding positioning frame 23. Two slide rails 26 are symmetrically installed on the welding positioning frame 23 on both sides of the push cylinder 25. Slide blocks 27 are slidably installed on both slide rails 26. The telescopic direction of the push cylinder 25 is the same as the sliding direction of the slide block 27.

[0029] The lifting mechanism 32 includes a moving platform 24 connected to the top of the slider 27, a connecting plate 29 is provided at the bottom of the moving platform 24, and the telescopic end of the pushing cylinder 25 is fixedly connected to the connecting plate 29, and a plurality of lifting cylinders 28 are installed on the top of the moving platform 24, and the workbench 1 is connected to the telescopic end of the top of the lifting cylinder 28. The pushing cylinder 25 pushes and pulls the connecting plate 29, thereby driving the moving platform 24 to move horizontally along the slide rail 26, and the lifting cylinder 28 drives the workbench 1 to move vertically, thereby realizing the vertical and horizontal position adjustment of the muffler 5 clamped by the clamping mechanism 4.

[0030] Two bearing seats 9 are provided on the workbench 1, and the rotating shaft 3 is movably mounted on the bearing seats 9. A transmission wheel 10 is fixed on the rotating shaft 3 between the two bearing seats 9. The rotating motor 2 is mounted on the workbench 1 on one side of the transmission wheel 10. A transmission wheel 2 11 is fixed on the output shaft of the rotating motor 2, and a transmission belt 12 is connected between the transmission wheel 10 and the transmission wheel 2 11. The rotating motor 2 drives the rotating shaft 3 to rotate through the transmission belt 12, thereby driving the clamping mechanism and the muffler 5 to rotate.

[0031] The clamping mechanism 4 includes a pneumatic clamp 14, which is provided with two clamping ends 15 arranged opposite to each other, and clamping blocks 16 are installed on opposite sides of the two clamping ends 15. The pneumatic clamp 14 is provided with a connecting block 13 on the side opposite to the clamping block 16, and the end of the rotating shaft 3 close to the pneumatic clamp 14 is provided with a connecting block 2, and the connecting block 13 is fixedly connected with the connecting block 2 by threads. The pneumatic clamp 14 is also called a finger cylinder, which is an existing mature technology and will not be described in detail here.

[0032] The two clamping blocks 16 are provided with arc grooves 22 on opposite sides, and the curvature of the two arc grooves 22 matches the curvature of the outer peripheral surface of the muffler 5. The clamping block 16 is detachably connected to the pneumatic clamping jaw 14 by bolts, and by replacing the clamping blocks 16 with different curvatures, the mufflers 5 with different diameters can be clamped.

[0033] The pneumatic clamp 14 is provided with a cushion block 17 on the side opposite to the connecting block 13, and the cushion block 17 is provided with a mounting opening 21 on the side facing the muffler 5, and a fixing block 18 is installed in the mounting opening 21, and the fixing block 18 is butt-connected with the end of the muffler 5. It plays a role in positioning the position of the muffler 5 toward one end of the clamping mechanism, and the fixing block 18 is fixed to the cushion block 17 by bolts, and the mufflers 5 of different diameters can be positioned and connected by replacing the fixing blocks 18 of different diameters.

[0034] The positioning structure 7 includes a plurality of support frames 19 mounted on the workbench 1, the U-shaped groove 8 is located in the middle of the support frame 19, the U-shaped groove 8 is provided with a plurality of threaded holes, and the threaded holes are detachably mounted with positioning wheels 20. The support frames 19 are arranged front and back in the same straight line, and the muffler 5 is placed in the U-shaped groove 8 in the same straight line. The support frames 19 play a supporting role to prevent the muffler 5 from being offset during the processing.

[0035] The outer side of the positioning wheel 20 is provided with a rubber layer. The positioning wheel 20 is used to locate the position of the welded end of the muffler 5, and can rotate with the positioning wheel 20 when the muffler 5 rotates, so as to prevent the outer side of the muffler 5 from directly contacting and rotating with the support frame 19, resulting in scratches on the outer side of the muffler 5. The size of the positioning wheel 20 can be replaced according to the size of the muffler 5, so as to adapt to the positioning of mufflers 5 of different sizes.

[0036] When the present invention is used, the muffler 5 is placed on the support frame 19, the positioning wheel 20 positions the welding end of the muffler 5, and the other end of the muffler 5 is docked and installed on the fixed block 18. The pneumatic clamp 14 is started to clamp the end of the muffler 5 to complete the clamping and positioning of the muffler 5. The steel wool ring 6 is docked at the welding end of the muffler 5 to perform welding at the first point, and the rotating motor 2 is started to drive the rotating shaft 3 to rotate through the transmission belt 12, the transmission wheel 10, and the transmission wheel 2 11, thereby driving the clamping mechanism 4 and the muffler 5 clamped therewith to rotate 90°, and then the second point is welded. During this period, the workbench 1 on the slide rail 26 can be pushed and pulled by starting the pushing cylinder 25, thereby moving the muffler 5 on the clamping mechanism in the horizontal direction. The lifting cylinder 28 can also be started to drive the workbench 1 to lift and lower, thereby realizing the vertical position movement of the muffler 5. Repeat the above operations to complete the four-point welding processing of the muffler 5 and the steel wool ring 6.

[0037] Among them, the device of the present invention is used for positioning the welding silencer 5 and the steel wool ring 6. The other fixed welding head is not shown in the figure and will not be further refined here. It belongs to the spot welding structure of the prior art. The fixing and movement of the silencer 5 and the steel wool ring 6 are realized by the mobile structure of the present invention, and the butt welding of the fixed spot welding head is realized.

[0038] The present invention realizes horizontal and vertical movement and automatic rotation clamping of the muffler 5 through the cylinders and the rotary motor 2, thereby improving welding efficiency and accuracy.

[0039] The above-mentioned spot welding method of the silencer pipe realized based on the multi-directional moving structure of the device is also an automated precision silencer welding method.

[0040] The present invention effectively realizes a multi-directional moving structure used for muffler spot welding, drives the slider to move on the slide rail by pushing the cylinder to work, thereby realizing horizontal movement of the muffler, and drives the workbench to move vertically by the extension and contraction of the lifting cylinder, thereby realizing vertical adjustment of the muffler. At the same time, the cooperation of the rotating motor and the rotating shaft enables the muffler to be rotated after being clamped, which is convenient for the operator to locate the welding point, and avoids the cumbersome operation of manually loosening the clamp and adjusting the position of the traditional fixed clamp, thereby reducing the labor cost and improving the welding efficiency. That is, by setting the rotating motor, the rotating shaft, the clamping mechanism and the positioning structure, the effect of automatic rotation and clamping of the muffler in multi-directional movement is realized, that is, the rotating motor drives the rotating shaft to rotate, and the clamping mechanism rotates with the rotating shaft at the same time, the muffler is flexibly fixed on the workbench through the clamping part, and the positioning structure provided with a U-shaped groove is used to make the outer peripheral side of the muffler contact with the inside of the U-shaped groove to realize precise positioning. In addition, by installing a positioning wheel of corresponding size, it can be applicable to mufflers of different sizes, solving the problems of low efficiency and low precision of manual clamping and rotation.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A muffler spot welding multi-directional moving structure, comprising a welding positioning frame (23), characterized in that: The welding positioning frame (23) is provided with a horizontal moving mechanism (31), and a lifting mechanism (32) is slidably installed on the horizontal moving mechanism (31). A workbench (1) is installed on the top of the lifting mechanism (32). A rotating motor (2) is provided on the workbench (1), and the rotating motor (2) is connected to a rotating shaft (3). A clamping mechanism (4) is fixed to the end of the rotating shaft (3) opposite to the rotating motor (2). The side of the clamping mechanism (4) opposite to the rotating shaft (3) is a clamping portion. The clamping portion of the clamping mechanism (4) clamps a silencer (5). The workbench (1) is also provided with a positioning structure (7), and the positioning structure (7) is provided with a U-shaped groove (8). The rotating motor (2) drives the rotating shaft to rotate, and the clamping mechanism (4) rotates together with the rotating shaft. The silencer (5) is fixed to the workbench through the clamping portion, and the outer peripheral side of the silencer (5) is contacted with the inside of the U-shaped groove for positioning.

2. The muffler movable clamping structure according to claim 1, characterized in that: The horizontal moving mechanism (31) comprises a pushing cylinder (25) installed at the middle position of the upper part of the welding positioning frame (23), two slide rails (26) are symmetrically installed on the welding positioning frame (23) on both sides of the pushing cylinder (25), and sliders (27) are slidably installed on the two slide rails (26).

3. The muffler movable clamping structure according to claim 2, characterized in that: The lifting mechanism (32) comprises a moving platform (24) connected and installed on the top of a slider (27), a connecting plate (29) is provided at the bottom of the moving platform (24), and the telescopic end of the pushing cylinder (25) is fixedly connected to the connecting plate (29), a plurality of lifting cylinders (28) are installed on the top of the moving platform (24), and the workbench (1) is installed and connected to the telescopic end of the top of the lifting cylinder (28).

4. The muffler movable clamping structure according to claim 3, characterized in that: The workbench (1) is provided with two bearing seats (9), the rotating shaft (3) is movably mounted on the bearing seats (9), a transmission wheel (10) is fixed on the rotating shaft (3) between the two bearing seats (9), the rotating motor (2) is mounted on the workbench (1) on one side of the transmission wheel (10), a transmission wheel (11) is fixed on the output shaft of the rotating motor (2), and a transmission belt (12) is connected between the transmission wheel (10) and the transmission wheel (11).

5. The muffler movable clamping structure according to claim 4, characterized in that: The clamping mechanism (4) comprises a pneumatic clamp (14), wherein the pneumatic clamp (14) is provided with two clamping ends (15) arranged opposite to each other, and clamping blocks (16) are installed on opposite sides of the two clamping ends (15); a connecting block 1 (13) is provided on the side of the pneumatic clamp (14) opposite to the clamping block (16); a connecting block 2 is provided on the end of the rotating shaft (3) close to the pneumatic clamp (14); and the connecting block 1 (13) is fixedly connected to the connecting block 2 by threads.

6. The muffler movable clamping structure according to claim 5, characterized in that: An arc-shaped groove (22) is provided on one opposite side of the two clamping blocks (16), and the curvature of the two arc-shaped grooves (22) matches the curvature of the outer peripheral surface of the muffler (5).

7. The muffler movable clamping structure according to claim 6, characterized in that: A cushion block (17) is provided on the side of the pneumatic clamp (14) opposite to the connecting block (13); a mounting opening (21) is provided on the side of the cushion block (17) facing the muffler (5); a fixing block (18) is installed in the mounting opening (21); and the fixing block (18) is butt-connected to the end of the muffler (5).

8. The muffler movable clamping structure according to claim 7, characterized in that: The positioning structure (7) comprises a plurality of support frames (19) mounted on the workbench (1); the U-shaped groove (8) is located in the middle of the support frame (19); a plurality of threaded holes are provided on the U-shaped groove (8); and positioning wheels (20) are detachably mounted on the threaded holes.

9. The muffler movable clamping structure according to claim 8, characterized in that: The outer side surface of the positioning wheel (20) is provided with a rubber layer, and rollers (30) are provided at the four corners of the bottom of the welding positioning frame (23).

Images