CN221087742U - Welding platform - Google Patents

Abstract

The welding platform comprises a shaping plate, wherein the shaping plate is used for placing a workpiece to be welded, can rotate around an axis vertical to the plate surface of the shaping plate and is projected along a rotation shaft of the shaping plate, and the outer contour of the shaping plate is consistent with the outer contour of the workpiece to be welded; the welding gun installation assembly comprises a welding gun frame and a pinch roller unit; the welding gun frame is used for installing a welding gun, and the pinch roller unit is fixed on one side surface of the welding gun frame facing the side surface of the profiling plate and comprises a pinch roller with an axis parallel to the rotation axis of the profiling plate; in the rotation process of the shaping plate, the pressing wheel slides on the shaping plate, and the wheel surface is kept in contact with the side surface of the shaping plate, so that the welding gun is driven to move along the direction perpendicular to the rotation axis of the shaping plate; the welding platform provided by the utility model has the advantages that the welding seam is uniform, continuous and reliable, and the welding quality is improved compared with the prior art.

Description

Welding platform

Technical Field

The utility model belongs to the technical field of welding, and particularly relates to a welding platform.

Background

Welding is a common form of processing in modern manufacturing. And heating the welded workpiece under the high temperature of the welding gun to make the welded workpiece in a molten state, and fixing the welded workpiece with other parts to prepare the parts with the required shapes. Moreover, the welding process is generally a high-temperature operation, and the working conditions are bad. With the development of automated production, welding automation equipment has been developed.

For plane welding, the welding gun is controlled to perform linear motion only by automatic equipment such as a stepping motor, the motion mode is simple, and the welding distance on a workpiece is easy to adjust. However, in the case of welding curved surfaces, particularly, in the case of a disk-shaped component having a curved outer contour, the side surfaces thereof are curved surfaces having a continuously changing curvature, and if the side surfaces are welded, it is necessary to control the welding gun to simultaneously perform a plurality of movement directions with respect to the workpiece, and the movement is complicated and the movement distance is difficult to control, resulting in low welding accuracy and unstable quality. And when curved surface workpieces with different outer contours are replaced each time to be welded, the movement path of the welding gun is required to be reset according to the outer contours of the parts, and the automatic production efficiency is affected.

Disclosure of utility model

Based on the above, the utility model provides a welding platform for improving the welding quality between workpieces with welding seams on the curved side surfaces.

The utility model is realized by the following technical scheme:

A welding platform, comprising:

The shaping plate is used for placing a workpiece to be welded, can rotate around an axis vertical to the plate surface of the shaping plate and is projected along the rotation axis of the shaping plate, and the outline of the shaping plate is consistent with the outline of the workpiece to be welded; and

The welding gun installation assembly comprises a welding gun frame and a pinch roller unit; the welding gun frame is used for installing a welding gun, and the pinch roller unit is fixed on one side surface of the welding gun frame facing the side surface of the profile plate and comprises a pinch roller with an axis parallel to the rotation axis of the profile plate; in the rotation process of the profile plate, the pinch roller slides on the profile plate, and the wheel surface is kept in contact with the side surface of the profile plate, so that the welding gun is driven to move along the direction perpendicular to the rotation axis of the profile plate; and projecting along the rotation axis direction of the profile plate, wherein the moving route of the welding gun is consistent with the outer contour of the profile plate.

Compared with the prior art, the welding platform ensures that the movement of the welding gun is consistent with the change of the curvature of the outer contour of the welding workpiece in the welding process through the cooperation between the profiling plate and the pressing wheel, so that the welding seam is uniform, continuous and reliable, and the welding quality is improved.

Further, the welding gun mounting assembly further comprises a rod frame, a first guide rod, a sliding block and a spring; the first guide rod extends to the direction of the profile plate along the direction perpendicular to the rotation axis of the profile plate, the rod frame supports the first guide rod, the sliding block slides along the first guide rod, and the welding gun frame is arranged on the sliding block and slides together with the sliding block; one end of the spring is fixed, the other end of the spring is connected with the sliding block, and when the sliding block moves away from the direction of the profile plate, the spring generates a pulling force which pulls the sliding block towards the profile plate, so that the pinch roller is always abutted against the side face of the profile plate.

Further, the welding gun mounting assembly further comprises a second guide rod, wherein the second guide rod is mounted on the sliding block, and the extending direction of the second guide rod is parallel to the rotating shaft direction of the profiling plate; the welding gun frame can slide on the second guide rod so as to adjust the height of the welding gun frame relative to the sliding block, and then the height of the welding gun relative to the workpiece to be welded is adjusted, so that the workpieces to be welded with different heights can be welded conveniently.

Further, the number of the first guide rods is more than two, the axial directions of the first guide rods are parallel to each other, and the sliding blocks are connected between the first guide rods; along the axis of rotation projection of former, in perpendicular to first guide arm axial direction, the spring coupling is in the middle part of slider for the slider atress is even, and the motion is smooth and easy.

Further, still include the clamp assembly, the clamp assembly includes radial anchor clamps and axial anchor clamps, radial anchor clamps are right to the work piece that waits to weld is exerted with the perpendicular holding power of the axis of rotation of former, axial anchor clamps are to wait to weld the work piece with the axis of rotation of former is parallel and directional the pressure of former to better with wait to weld the work piece locking to the former.

Further, still include servo assembly, servo assembly includes motor and rotation axis, the motor passes through the rotation axis drives the former is rotated around the axle, rotates the former through the motor to reduce the manual work and rotate the working strength of former, improve work efficiency.

Further, the profiling plate is movably connected with the rotating shaft so as to facilitate welding of workpieces with different outer contours.

Further, the welding machine further comprises a control assembly, the control assembly comprises a controller electrically connected with the motor, and the rotation speed of the profiling plate is controlled through the controller, so that welding automation is achieved.

Further, the control assembly also comprises a positioning sensing piece and a positioning sensor; the positioning induction sheet is arranged on a side plate surface of the profiling plate, which is opposite to the workpiece to be welded, and the positioning sensor is electrically connected with the controller and is positioned on one side of the profiling plate, which is opposite to the workpiece to be welded; when the profiling plate rotates, the positioning sensor moves relative to the profiling plate and is connected with or separated from the positioning sensing piece so as to acquire the rotation angle of the profiling plate and control the length of the welding line.

Further, the number of the positioning induction plates is more than two, so that intermittent welding seams are obtained.

Drawings

FIG. 1 is a front view of a welding platform of the present utility model;

FIG. 2 is a side view of a welding platform of the present utility model;

FIG. 3 is a top view of a welding platform according to the present utility model;

FIG. 4 is a schematic diagram of the structures of a first workpiece and a second workpiece according to the present utility model;

FIG. 5 is a front view of the clamp assembly of the present utility model;

FIG. 6 is a top view of the clamp assembly of the present utility model;

FIG. 7 is a front view of the weld gun mount assembly of the present utility model;

FIG. 8 is a cross-sectional perspective view taken along line Z-Z in FIG. 7;

FIG. 9 is a schematic view of the structure of the intermediate wheel unit of the present utility model;

Fig. 10 is a partial enlarged view of a portion a in fig. 2.

Detailed Description

Referring to fig. 1-3 in combination, the welding platform of the present utility model includes a support frame 10, a servo assembly 20, a profile plate 30, a clamp assembly 40, a gun mount assembly 50, and a control assembly 60. The servo assembly 20 is disposed on the support 10, and drives the cam 30 to rotate around the shaft under the control of the control assembly 60. The rotation axis of the profiling plate 30 is perpendicular to the plate surface. The first and second workpieces 100, 200 to be welded are locked to and rotated with the profile plate 30 by the clamp assembly 40. The welding gun mounting assembly 50 is used for fixing the welding gun 300 and driving the welding gun 300 to move along the direction perpendicular to the rotating shaft of the profiling plate 30. In this embodiment, the first workpiece 100 and the second workpiece 200 are respectively an annular workpiece and an annular cover body covering an axial top surface of the annular workpiece. The axes of the first workpiece 100 and the second workpiece 200 are coincident with the axis of the profile plate 30. The servo assembly 20 drives the first workpiece 100 and the second workpiece 200 to rotate around the axis on the profiling plate 30, and the welding gun mounting assembly 50 drives the welding gun 300 to move on the side surfaces of the first workpiece 100 and the second workpiece 200 and weld the junction of the side surfaces of the first workpiece 100 and the second workpiece 200, so that the first workpiece 100 and the second workpiece 200 are welded together. In addition, the outer side surfaces of the first workpiece 100 and the second workpiece 200 may be curved surfaces such as an elliptic cylindrical surface and an arc surface, or a mixed surface composed of a curved surface and a plane tangential to the curved surface.

Wherein in the present embodiment the stand 10 is provided with a base plate 11 and legs 12 supporting the base plate 11. The servo assembly 20 includes a motor 21 and a rotating shaft 22. The motor 21 is located below the base plate 11 and drives the rotation shaft 22 to rotate. The rotation shaft 22 passes through the base plate 11 and extends above it. The upper end of the rotating shaft 22 is provided with a mounting surface 221 having a plate surface perpendicular to the axis of the rotating shaft 22. The cam 30 may be movably mounted to the mounting surface 221 by means of screws, pins, magnetic attraction, etc. The mounting surface 221 has a cross-sectional area greater than the cross-sectional area of the rotatable shaft 22 to better support the profile plate 30.

The profile plate 30 has a side surface with the same outer profile as the first work piece 100 and/or the second work piece 200. Projected along the axis of the profile plate 30, the edge of the profile plate 30 coincides with the edge of the first work piece 100 and/or the second work piece 200. During welding, the first and second workpieces 100, 200 are locked to the profile plate 30 with their sides aligned with the profile plate 30 sides.

The gun mount assembly 50 is mounted to the base plate 11 and is located alongside the profile plate 30. In this embodiment, the first workpiece 100 is located between the profile plate 30 and the second workpiece 200. Referring to fig. 4, a side of the cam 30 facing the first workpiece 100 is provided with a bump (not shown), a side of the first workpiece 100 facing the cam 30 is provided with a groove 101 corresponding to the bump, and the first workpiece 100 is initially positioned on the cam 30 by the mutual engagement of the bump and the groove. In addition, the height of the bump may be set to be greater than the depth of the groove, so that a certain gap is formed between the first workpiece 100 and the profile plate 30, so that the first workpiece 100 and the second workpiece 200 can be unloaded from the profile plate 30 after welding.

Referring to fig. 5, the clamp assembly 40 includes a radial clamp 41 and an axial clamp 42. The radial clamp 41 applies a force to the first workpiece 100 and/or the second workpiece 200 in a radial direction perpendicular to the axis of rotation of the profile plate 30, and the axial clamp 42 applies a force to the first workpiece 100 and/or the second workpiece 200 in the direction of the axis of rotation of the profile plate 30, thereby locking the first workpiece 100 and the second workpiece 200 to the profile plate 30. In this embodiment, the radial clamp 41 includes a radial clamp seat 411, a first link 412, a second link 413, a push rod 414, and a handle 415. The radial clamping seat 411 is fixedly arranged on the plate surface of the profiling plate 30 facing the first workpiece 100. One end of the first connecting rod 412 is hinged to the radial clamping seat 411, the other end of the first connecting rod is hinged to the second connecting rod 413, and one end, far away from the first connecting rod 412, of the second connecting rod 413 is hinged to the push rod 414. The push rod 414 can slide along the direction parallel to the plate surface of the profiling plate 30, and the handle 415 is fixed to the first connecting rod 412 or the second connecting rod 413 at the hinge position of the first connecting rod 412 and the second connecting rod 413. And the axes of the hinge shafts among the radial clamping seat 411, the first connecting rod 412, the second connecting rod 413 and the push rod 414 are parallel to each other and are parallel to the plate surface of the profiling plate 30. When positioning, the inner wall surface of the first workpiece 100 and/or the second workpiece 200 is in contact with the radial chuck 411 on the side close to the first link 412. Forward pushing the handle 415 to rotate the first connecting rod 412 and the second connecting rod 413 around the shaft, and pushing the push rod 414 to translate along a direction parallel to the plate surface of the profiling plate 30 and far away from the first connecting rod 412 until abutting against the inner wall surface of the other side of the first workpiece 100 and/or the second workpiece 200, and tensioning the first workpiece 100 and/or the second workpiece 200 in the radial direction under the action of the radial clamping seat 411 and the push rod 414 to realize radial positioning; pushing the handle 415 in the reverse direction, the push rod 414 translates in a direction approaching the first link 412, thereby releasing the positioning of the first workpiece 100 and/or the second workpiece 200 in the radial direction. Referring to fig. 6, further, the radial clamp 41 further includes a mounting block 416 and a pushing block 417. The mounting block 416 is fixed to the profile plate 30 and is attached to one side inner wall surface of the first workpiece 100 and/or the second workpiece 200, and the pushing block 417 is fixed to the first link 412 and moves along the surface of the profile plate 30 to be attached to the other side inner wall surface of the first workpiece 100 and/or the second workpiece 200, so that the first workpiece 100 and/or the second workpiece 200 is subjected to uniform tension. The axial clamp 42 includes an axial clamp seat 421, a rotating rod 422, and a pressing rod 423. The axial clamp 421 is secured to at least one of the cam 30, mounting block 416 and push block 417. The rotating rod 422 is hinged to the axial clamping seat 421, and the hinge shaft is perpendicular to the rotation shaft of the cam 30. The pressing rod 423 is installed at one end of the rotating rod 422, extends along a direction perpendicular to the plate surface of the profile plate 30, and is located above the first workpiece 100 and the second workpiece 200. The rotating rod 422 is pushed and pulled to rotate around the shaft at one end far away from the pressing rod 423, and the pressing rod 423 is pressed towards the second workpiece 200, so that the first workpiece 100 and the second workpiece 200 are pressed along the axial direction parallel to the profiling plate 30. Further, the number of the axial clamps 42 is two or more and is uniformly distributed along the circumferential direction of the second workpiece 200 to provide uniform pressing force to the first workpiece 100 and the second workpiece 200.

Referring to fig. 7 and 8 in combination, the welding gun mounting assembly 50 includes a rod frame 51, a first guide rod 52, a slider 53, a spring 54, a second guide rod 55, a welding gun frame 56, and a pinch roller unit 57. The bar frame 51 is fixed to the base plate 11 to support the first guide bar 52. The first guide rods 52 extend in a direction perpendicular to the axis of rotation of the profile plate 30 toward the profile plate 30. The slider 53 is engaged with and slides along the first guide bar 52. One end of the spring 54 is fixedly connected with the sliding block 53, and the other end is close to the profiling plate 30 and is fixedly connected with the rod frame 51 or the bottom plate 11. When the slider 53 slides away from the profile plate 30, the spring 54 applies a pulling force to the slider 53 that pulls toward the profile plate 30. Preferably, the first guide 52 includes a first guide 52A and a first guide 52B parallel to each other, projected in the direction of the rotation axis of the cam 30, the slider 53 is connected between the first guide 52A and the first guide 52B, and the spring 54 is fixed in the middle of the slider 53 in the direction perpendicular to the axis of the first guide 52 and generates elastic force parallel to the axis of the first guide 52. The second guide rod 55 is mounted on a side of the sliding block 53 facing away from the bottom plate 11, the axis of the second guide rod is parallel to the rotation axis of the profiling plate 30, and the welding gun rack 56 is sleeved on the second guide rod 55 and can slide relative to the second guide rod 55, so that the height of the welding gun rack 56 relative to the sliding block 53 is adjusted. The welding gun 300 is mounted on the welding gun holder 56 and moves along with the welding gun holder 56, and the height of the welding gun holder 56 is adjusted so that the welding gun 300 is aligned with the joint between the first workpiece 100 and the second workpiece 200. Referring to fig. 9, puck unit 57 includes a frame 571, an axle 572, and a puck 573. Further, the axle 572 may be mounted to the wheel frame 571 by a bearing or the like, so that wear is reduced. The wheel frame 571 is fixed to a side surface of the gun carrier 56 facing the profile plate 30 by screws or the like, and the pinch roller 573 is sleeved outside the wheel shaft 572 to be hinged with the wheel frame 571. The tread of the pinch roller 573 abuts against the side surface of the profile plate 30. The axis of the axle 572 is parallel to the axis of rotation of the cam 30. As the cam 30 with a changed curvature of the side surface rotates, the side surface pushes the pressing wheel 573 to rotate around the axle 572, and simultaneously, the pressing wheel 573 pushes the sliding block 53 to slide along the first guide rod 52, when the sliding block 53 moves away from the cam 30, the sliding block 53 is pulled towards the cam 30 by the pulling force of the spring 54, so that the tread of the pressing wheel 573 keeps abutting against the side surface of the cam 30. With the sliding of the sliding block 53, the welding gun 300 on the welding gun rack 56 is far away from or near to the profiling plate 30, and is projected along the rotation axis direction of the profiling plate 30, and the moving route of the welding gun 300 relative to the first workpiece 100 and/or the second workpiece 200 is consistent with the outline of the first workpiece 100 and/or the second workpiece 200, so that the welding of the first workpiece 100 and the second workpiece 200 is kept.

Referring to fig. 10, the control assembly 60 includes a controller (not shown), at least one positioning sensor plate 61, and a positioning sensor 62. The controller is electrically connected to the motor 21 and the positioning sensor 62, respectively, to control the rotation speed of the motor 21 and to acquire the electrical signal of the positioning sensor 62. The at least one positioning sensing piece 61 is mounted on a side surface of the profiling plate 30 facing away from the first workpiece 100. The positioning sensor 62 is fixed to the base plate 11 by a support or the like and is located below the cam 30. As the cam 30 rotates, the position sensor 62 moves relative to the cam 30 to engage or disengage the at least one position sensing tab 61. When the positioning sensor 62 is connected with the at least one positioning sensing piece 61, the positioning sensor 62 generates an electric signal and sends the electric signal to the controller, so that the rotation of the motor 21 is controlled according to the electric signal of the positioning sensor 62, and the length of the welding seam is controlled. In addition, the controller may be electrically connected to the welding gun 300 to control the operation thereof, and weld the welding lines having the interval distance. The at least one locating tab 61 may be positioned below the weld start as a weld start, with a plurality of or at least one locating tab 61 enabling the controller to obtain the rotational angle of the profile plate 30 during the welding process.

During operation, the first workpiece 100 and the second workpiece 200 are placed on the profiling plate 30 in sequence, the radial clamp 41 and the axial clamp 42 are respectively pushed, the first workpiece 100 and the second workpiece 200 are locked on the profiling plate 30, and the pressing wheel 573 is ensured to be pressed with the side surface of the profiling plate 30. The welding gun 300 is mounted to the gun holder 56 and the height of the gun holder 56 is adjusted so that the tip of the welding gun 300 is aligned with the joint between the first workpiece 100 and the second workpiece 200. The motor 21 is then started and the welding gun 300 is started by the controller. The motor 21 drives the cam 30 to rotate, and the welding gun 300 welds the first workpiece 100 and the second workpiece 200. The positioning sensing piece set 61 detects the rotation angle of the profile plate 30, stops the operation of the motor 21 and the welding gun 300 when the required weld length is reached, and takes out the first workpiece 100 and the second workpiece 200. When workpieces with different shapes are required to be welded, the profiling plate 30 is removed, the profiling plate 30 with different shapes is replaced, and the welding steps are repeated.

Compared with the prior art, the welding platform provided by the utility model has the advantages that the welding seam of the workpiece welded by the welding platform is uniform, continuous and reliable, and the welding quality is high. And when welding different work pieces, only need quick replacement former and adjust welder height can, production efficiency is high. And moreover, automatic production can be realized, the labor intensity of workers is greatly reduced, and the welding position is positioned through the positioning induction piece and the positioning sensor, so that the precision of automatic production is improved.

The foregoing description of embodiments is specific and detailed, but is not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims (10)

1. A welding platform, characterized in that: comprising

The shaping plate is used for placing a workpiece to be welded, can rotate around an axis vertical to the plate surface of the shaping plate and is projected along the rotation axis of the shaping plate, and the outline of the shaping plate is consistent with the outline of the workpiece to be welded; and

The welding gun installation assembly comprises a welding gun frame and a pinch roller unit; the welding gun frame is used for installing a welding gun, and the pinch roller unit is fixed on one side surface of the welding gun frame facing the side surface of the profile plate and comprises a pinch roller with an axis parallel to the rotation axis of the profile plate; in the rotation process of the profile plate, the pinch roller slides on the profile plate, and the wheel surface is kept in contact with the side surface of the profile plate, so that the welding gun is driven to move along the direction perpendicular to the rotation axis of the profile plate; and projecting along the rotation axis direction of the profile plate, wherein the moving route of the welding gun is consistent with the outer contour of the profile plate.

2. The welding platform of claim 1, wherein: the welding gun mounting assembly further comprises a rod frame, a first guide rod, a sliding block and a spring; the first guide rod extends to the direction of the profile plate along the direction perpendicular to the rotation axis of the profile plate, the rod frame supports the first guide rod, the sliding block slides along the first guide rod, and the welding gun frame is arranged on the sliding block and slides together with the sliding block; one end of the spring is fixed, the other end of the spring is connected with the sliding block, and when the sliding block moves away from the profile plate, the spring generates a pulling force for pulling the sliding block to the profile plate.

3. The welding platform of claim 2, wherein: the welding gun installation assembly further comprises a second guide rod, wherein the second guide rod is installed on the sliding block, and the extending direction of the second guide rod is parallel to the rotating shaft direction of the profiling plate; the welding gun rack can slide on the second guide rod so as to adjust the height of the welding gun rack relative to the sliding block.

4. The welding platform of claim 2, wherein: the number of the first guide rods is more than two, the axial directions of the first guide rods are parallel to each other, and the sliding blocks are connected between the first guide rods; and the spring is connected to the middle part of the sliding block along the projection of the rotation shaft of the profiling plate in the direction perpendicular to the axial direction of the first guide rod.

5. The welding platform of claim 1, wherein: the clamp assembly comprises a radial clamp and an axial clamp, the radial clamp applies supporting force perpendicular to the rotation axis of the profile plate to the workpiece to be welded, and the axial clamp applies pressure parallel to the rotation axis of the profile plate and pointing to the profile plate to the workpiece to be welded.

6. The welding platform of claim 1, wherein: the servo assembly comprises a motor and a rotating shaft, and the motor drives the profiling plate to rotate around the shaft through the rotating shaft.

7. The welding platform of claim 6, wherein: the profiling plate is movably connected with the rotating shaft.

8. The welding platform of claim 6, wherein: the motor also comprises a control assembly, wherein the control assembly comprises a controller electrically connected with the motor.

9. The welding platform of claim 8, wherein: the control assembly also comprises a positioning sensing piece and a positioning sensor; the positioning induction sheet is arranged on a side plate surface of the profiling plate, which is opposite to the workpiece to be welded, and the positioning sensor is electrically connected with the controller and is positioned on one side of the profiling plate, which is opposite to the workpiece to be welded; when the profiling plate rotates, the positioning sensor moves relative to the profiling plate and is connected with or separated from the positioning sensing piece.

10. The welding platform of claim 9, wherein: the number of the positioning induction pieces is more than two.