CN219484733U

CN219484733U - Pipe welding device

Info

Publication number: CN219484733U
Application number: CN202320264700.6U
Authority: CN
Inventors: 钟仁志; 王绍勇; 陶峰
Original assignee: Xinlei Compressor Co Ltd
Current assignee: Xinlei Compressor Co Ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-08-08
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to the field of welding, in particular to a pipe welding device which comprises an objective table, a welding component arranged on one side of the objective table and a rotary driving component for driving the objective table to rotate in a circumferential direction relative to the welding component, wherein the objective table is provided with a positioning groove, the axis of the positioning groove coincides with the rotary axis of the objective table, and the side wall of the positioning groove is provided with a clamping component capable of moving along a radial direction. According to the utility model, the connector is positioned through the positioning groove on the objective table, so that the positions of the connector and the connecting pipe cannot deviate when the connector and the connecting pipe rotate, the rotary driving assembly drives the objective table to rotate, the circumferential seam between the connector and the connecting pipe can pass through the welding assembly, the circumferential seam can be welded everywhere, the welding quality is ensured, and the welding efficiency is improved. The welding part is beautiful and airtight.

Description

Pipe welding device

Technical Field

The utility model relates to the field of welding, in particular to a pipe welding device.

Background

The metal tube typically requires a connector or flange mount to be installed on the end to facilitate connection between the metal tube and other objects. For example, in the field of screw compressors, the air storage tank and the oil-water separator are connected through a pipeline, compressed air formed by compression of the screw compressor is firstly separated from the compressed air by the oil-water separator, and then pure compressed air enters the air storage tank through the pipeline.

In the prior art, in order to connect the metal pipe and the connector or the flange seat, a welding mode is generally adopted. The welding process is as follows: firstly, spot welding is carried out on annular gaps of the metal pipe and the connector or the flange seat, the metal pipe and the connector or the flange seat are primarily fixed, and then welding is carried out for the second time, so that the whole annular gaps are completely welded together.

At present, the welding process is performed manually, the welding quality can be ensured in the spot welding process, but the welding quality can not be ensured in the secondary welding process, and the problem that the welding seam is not completely sealed often occurs, so that the pipeline leaks air. In addition, the welding efficiency is not high.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide a pipe welding device which can automatically weld a circular seam after spot welding is completed, ensure that all parts can be accurately welded during welding, ensure welding quality and improve welding efficiency.

For the purpose of the utility model, the following technical scheme is adopted for implementation:

the embodiment of the utility model provides a pipe welding device, which comprises a carrying table, a welding component arranged on one side of the carrying table and a rotary driving component for driving the carrying table to rotate in a circumferential direction relative to the welding component, wherein the carrying table is provided with a positioning groove, the axis of the positioning groove is coincident with the rotation axis of the carrying table, and the side wall of the positioning groove is provided with a clamping component capable of moving along a radial direction.

In one embodiment, the clamping members are plural and are uniformly distributed around the circumference of the positioning groove.

In one embodiment, the tail end of the clamping member is provided with an elastic member which applies an elastic force to the clamping member so that the clamping member has a tendency to protrude from the sidewall of the positioning groove.

In one embodiment, the rotary drive assembly includes a rotary shaft having an axis coincident with the rotational axis of the stage and a rotary drive member for driving the rotary shaft in rotation, the rotary shaft being fixedly coupled to the stage.

In one embodiment, the rotating shaft has a first connecting portion, the stage has a second connecting portion, and the first connecting portion and the second connecting portion cooperate to achieve a fixed connection of the rotating shaft to the stage.

In one embodiment, the rotating shaft has a cam body protruding radially outward and extending circumferentially around the underside ring.

In one embodiment, the rotary driving assembly further comprises a bearing seat, wherein a deep groove ball bearing and a thrust ball bearing are axially arranged in the bearing seat side by side, and the rotary shaft is rotatably connected inside the deep groove ball bearing and the thrust ball bearing.

In one embodiment, the rotary driving part is a motor, and the motor is connected with the rotary shaft through a synchronous belt.

In one embodiment, the welding assembly includes a welding gun and a welding gun support for fixing the welding gun, the welding gun support is arranged on one side of the object stage, the welding gun support includes a vertical rod, a cross rod connected with the vertical rod and a welding gun mounting seat arranged on the cross rod, the cross rod is configured to move up and down along the vertical rod, rotate around the vertical rod in the circumferential direction and rotate around the axis of the cross rod, and the welding gun seat is rotatably configured on the cross rod through shaft connection, so that the welding gun can randomly adjust the relative position between the welding gun and the object stage.

In one embodiment, the outside cover of pole setting is equipped with altitude mixture control cover and first angle adjustment cover, and first angle adjustment cover is located the top of altitude mixture control cover, and first angle adjustment sheathes fixedly connected with second angle adjustment cover, the horizontal pole rotates to be connected in second angle adjustment cover.

Compared with the prior art, the embodiment of the utility model has at least the following beneficial effects: positioning groove through on the objective table fixes a position the connector, ensures that the connector can not take place the skew with taking over the position when rotatory, and rotatory drive assembly drive objective table is rotatory for the girth between connector and the take over can be through welding set, ensures that the girth everywhere can both be welded, guarantees welding quality, improves welding efficiency. The welding part is beautiful and airtight.

Drawings

Fig. 1 is a schematic view of a connecting tube and a connecting head according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a welding device according to an embodiment of the utility model.

Fig. 3 is a schematic view of a welding device with a frame removed in an embodiment of the utility model.

FIG. 4 is a cross-sectional view of an embodiment of the present utility model taken longitudinally along the axis of the stage.

FIG. 5 is a schematic view of a welding gun assembly according to an embodiment of the utility model.

Detailed Description

Fig. 1 shows a schematic view of the connection pipe and the connection head in the present embodiment. Referring to fig. 1, in this embodiment, a connector 92 is fixedly connected to the left end of the adapter 91, so as to facilitate connection between the air tank and the oil-water separator. The connector 92 has a ring body 921 at the right end and a cylinder 922 at the left end, the diameter of the ring body 921 is larger than that of the cylinder 922, and the right end face of the ring body 921 is fixedly connected with the left end of the adapter 91, in this embodiment, the ring body 921 is fixedly connected with the adapter 91 by welding. More specifically, the ring body 921 and the adapter tube 91 are initially fixed by spot welding, and then the ring seam is completely welded by secondary welding.

Fig. 2 shows a schematic view of the welding apparatus in this embodiment. The welding device of the present embodiment is used to perform secondary welding of the butt joint pipe 91 and the ring 921 after the above-described spot welding process is completed.

Referring to fig. 2, the welding device comprises a frame 1 and a platen 2 fixedly installed on the top surface of the frame 1, wherein an objective table 3 and a welding assembly 4 are arranged on the upper end surface of the platen 2, the objective table 3 is used for positioning and clamping a connector 92 so as to fix a pipeline on the platen 2, and the welding assembly 4 is used for welding a circular seam. A rotary driving assembly 5 is arranged below the platen 2, and the rotary driving assembly 5 is used for driving the objective table 3 to rotate, so that a pipeline on the objective table 3 rotates circumferentially relative to the welding assembly 4, and all parts of the circular seam pass through the welding assembly 4, thereby realizing complete welding of the circular seam.

With continued reference to fig. 2, the upper surface of the objective table 3 is provided with a positioning groove 31 recessed downward, the axis of the positioning groove 31 coincides with the rotation axis of the objective table 3, and the positioning groove 31 is used for positioning the connector 92, so that when the connector 92 is installed in the positioning groove 31, a circumferential seam between the connector 92 and the adapter 91 gradually passes through the welding assembly 4 along with the rotation of the objective table 3, and the circumferential seam is welded everywhere.

Specifically, in the present embodiment, the cross section of the positioning groove 31 is circular, and the diameter is slightly larger than the diameter of the cylinder 922, so that the cylinder 922 can be smoothly fitted into the positioning groove 31. The depth of the positioning groove 31 is smaller than the length of the cylinder 922, so that the ring 921 can be positioned above the stage 3 after the connector 92 is mounted in the positioning groove 31, so that welding can be performed. The clamping component 32 capable of moving radially inwards and outwards is arranged on the side wall of the positioning groove 31, when the connector 92 is installed in the positioning groove 31, the head end (radial inner end) of the clamping component 32 is abutted against the circumferential outer surface of the cylinder 922, so that the connector 92 is clamped in the positioning groove 31, the fixing of the connector 92 is realized, the position is prevented from being deviated in the subsequent rotation process, and the connecting pipe 91 swings left and right.

Fig. 3 shows a schematic view of the welding apparatus in this embodiment with the frame removed. Referring to fig. 3, the welding device is used as follows: firstly, placing the connector 92 with the connecting tube 91 spot-welded into the positioning groove 31, and enabling the head end of the clamping part 32 to abut against the outer peripheral surface of the cylinder 922 of the connector 92, so as to fix the connector 92 and the connecting tube 91; then, the positions of the welding assembly 4 and the circumferential seam to be welded are adjusted to be the proper distance and angle between the two; then, the rotary driving assembly 5 drives the object stage 3 to rotate in the horizontal plane, and the connector 92 and the connecting pipe 91 correspondingly rotate, so that the circular seam rotates circumferentially relative to the welding assembly 4, and welding of the circular seam is realized.

Therefore, the object stage 3 is driven to rotate through the rotary driving assembly 5, so that the circular seam between the connector 92 and the connecting pipe 91 passes through the welding assembly 4, the comprehensive welding of the circular seam is realized, the welding quality is ensured, and the welding efficiency is improved.

Fig. 4 shows a cross-sectional view taken longitudinally along the axis of the stage. Referring to fig. 4, the inside of the stage 3 is uniformly provided with a plurality of (four in this embodiment) radially extending passages around the circumference, and the clamping members 32 are movably provided in the passages, thereby effecting radial movement of the clamping members 32 in the positioning grooves 31.

Specifically, the trailing end (radially outer end) of the clamping member 32 is provided with an elastic member 33, and the elastic member 33 applies an elastic force to the clamping member 32 so that the clamping member 32 has a tendency to protrude from the side wall of the positioning groove 31. More precisely, in normal state, the elastic member 33 is relaxed, the head end of the clamping member 32 protrudes from the side wall of the positioning groove 31, and when the connector 92 is mounted in the positioning groove 31, the outer circumferential surface of the cylinder 922 will abut against the head end of the clamping member 32, so that the head end of the clamping member 32 receives a radially outward force, thereby forcing the elastic member 33 to be compressed, while the clamping member 32 moves radially outward for a distance, so that the elastic force and the force applied by the clamping member 32 remain equal, thereby fixing the connector 92 in the positioning groove 31. In the present embodiment, the elastic member 33 is a spring.

As shown in fig. 3, the rotation driving unit 5 includes a rotation shaft 51 and a rotation driving member 52 that drives the rotation shaft 51 to rotate, the axis of the rotation shaft 51 coincides with the rotation axis of the stage 3, and the rotation shaft 51 is fixedly connected to the stage 3, thereby realizing rotation of the stage 3. In this embodiment, the rotation driving part 52 is a motor, and the rotation speed of the motor can be adjusted, so that the stage 3 is controlled to rotate at different speeds, and welding efficiency is improved while ensuring welding quality by finding an appropriate rotation speed. The rotation driving member 52 and the rotation shaft 51 are connected by a timing belt 53, and motion transmission is realized.

As shown in fig. 4, the rotation shaft 51 has a first connection portion 511, the stage 3 has a second connection portion 34, and the first connection portion 511 and the second connection portion 34 are engaged with each other to fixedly connect the rotation shaft 51 to the stage 3. In this embodiment, the first connection portion 511 is a threaded hole formed on the top surface of the rotation shaft 51, and the second connection portion 34 is a screw protruding downward from the bottom surface of the stage 3, and the screw is screwed into the threaded hole, so that the rotation shaft 51 and the stage 3 are fixedly connected.

In addition, the rotary shaft 51 further has a cam body 512 protruding radially outward and extending in a ring shape on the lower side around the circumferential direction, and the moment of inertia can be increased by providing the cam body 512, making the rotation of the rotary shaft 51 smoother.

As shown in fig. 4, the rotary driving assembly 5 further includes a bearing seat 54, the bearing seat 54 is fixedly connected below the platen 2, a deep groove ball bearing 55 and a thrust ball bearing 56 are axially arranged side by side in the bearing seat 54, the rotary shaft 51 is rotatably connected inside the deep groove ball bearing 55 and the thrust ball bearing 56, and the deep groove ball bearing 55 is located below the thrust ball bearing 56. By providing the deep groove ball bearing 55 and the thrust ball bearing 56, the object stage 3 is ensured not to be blocked when rotating, and meanwhile, the rotating precision can be ensured.

Fig. 5 shows a schematic view of the welding assembly in this embodiment. Referring to fig. 5, the welding assembly 4 includes a welding gun 41 and a gun holder 42 for fixing the welding gun, the gun holder 42 being provided at one side of the stage 3, the gun holder 42 including a pole 421, a cross bar 422 connected to the pole 421, and a gun mount 423 provided on the cross bar 422, the cross bar 422 being configured to be movable up and down along the pole 421, to be rotatable around the pole 421 and to be rotatable around its own axis, the gun mount 423 being rotatably provided on the cross bar 422 by shaft connection, so that the relative position between the welding gun 41 and the stage 3 can be arbitrarily adjusted.

Further, as shown in fig. 5, a height adjusting sleeve 424 and a first angle adjusting sleeve 425 are sleeved outside the vertical rod 421, the first angle adjusting sleeve 425 is located above the height adjusting sleeve 424, a second angle adjusting sleeve 426 is fixedly connected to the first angle adjusting sleeve 425, and the cross rod 422 is rotatably connected in the second angle adjusting sleeve 426.

Thus, when the height of the welding gun 41 needs to be adjusted, the first angle fixing sleeve 425 can move up and down on the vertical rod 421 only by loosening the height adjusting sleeve 424, so that the height of the welding gun 41 can be adjusted. When the front and rear positions of the welding gun 41 need to be adjusted, the front and rear swinging of the left end of the cross rod 422 can be realized only by rotating the first angle adjusting sleeve 424 on the vertical rod 421, so that the front and rear positions of the welding gun 41 can be adjusted. In addition, the second angle adjusting sleeve 426 may be released to rotate the cross bar 422, thereby adjusting the fore-aft position of the welding gun 41.

As shown in fig. 2, the frame 1 is further provided with a control box 6, and the control box 6 is provided with a plurality of control switches 61, and the rotation speed of the motor is controlled by the control switches 61. In addition, an electric foot switch 7 is provided on the lower side of the frame 1 to control the welding time.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The pipe welding device is characterized by comprising an objective table, a welding component arranged on one side of the objective table and a rotary driving component for driving the objective table to rotate so that the objective table rotates circumferentially relative to the welding component, wherein the objective table is provided with a positioning groove, the axis of the positioning groove coincides with the rotation axis of the objective table, and a clamping component capable of moving along the radial direction is arranged on the side wall of the positioning groove.

2. The pipe welding apparatus according to claim 1, wherein the clamping members are plural and are uniformly distributed around the circumference of the positioning groove.

3. The pipe welding apparatus according to claim 1, wherein the tail end of the clamping member is provided with an elastic member which applies an elastic force to the clamping member so that the clamping member has a tendency to protrude from the sidewall of the positioning groove.

4. The pipe welding apparatus according to claim 1, wherein the rotation driving assembly includes a rotation shaft and a rotation driving member that drives the rotation shaft to rotate, an axis of the rotation shaft coincides with a rotation axis of the stage, and the rotation shaft is fixedly connected to the stage.

5. The pipe welding apparatus according to claim 4, wherein the rotation shaft has a first connection portion, the stage has a second connection portion, and the first connection portion and the second connection portion are engaged to achieve a fixed connection of the rotation shaft to the stage.

6. The pipe welding apparatus as defined in claim 4 wherein the rotatable shaft has a cam body projecting radially outwardly and extending circumferentially about the underside ring.

7. The pipe welding apparatus according to claim 4, wherein the rotary drive assembly further comprises a bearing housing in which the deep groove ball bearing and the thrust ball bearing are axially arranged side by side, and the rotary shaft is rotatably connected inside the deep groove ball bearing and the thrust ball bearing.

8. The pipe welding apparatus according to claim 4, wherein the rotation driving part is a motor, and the motor is connected to the rotation shaft through a timing belt.

9. The pipe welding apparatus according to claim 1, wherein the welding assembly comprises a welding gun and a welding gun holder for fixing the welding gun, the welding gun holder being provided on one side of the stage, the welding gun holder comprising a pole, a cross bar connected to the pole, and a welding gun mount provided on the cross bar, the cross bar being configured to be movable up and down along the pole, to be rotatable around the pole, and to be rotatable around its own axis, the welding gun mount being rotatably provided on the cross bar by means of a shaft connection, such that the welding gun can be adjusted at will with respect to the stage.

10. The pipe welding device according to claim 9, wherein the outer side of the upright rod is sleeved with a height adjusting sleeve and a first angle adjusting sleeve, the first angle adjusting sleeve is located above the height adjusting sleeve, the first angle adjusting sleeve is fixedly connected with a second angle adjusting sleeve, and the cross rod is rotatably connected in the second angle adjusting sleeve.