Rotating device

Abstract

The utility model provides a rotating device, and relates to the technical field of welding equipment. The rotating device comprises a first connecting shaft, a second connecting shaft, a welding gun head and a cable, the first connecting shaft and the second connecting shaft are rotationally connected, the axis directions of the first connecting shaft and the second connecting shaft are the same, the welding gun head is fixedly connected with the first connecting shaft, the cable is fixedly connected with the second connecting shaft, and the welding gun head is used for rotating under driving of the robot. The rotating device can effectively reduce the risk that the cable is twisted off in the welding process.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, and more specifically, to a rotating device. Background Technology

[0002] The welding cable is mounted on the robot's flange and connected to the welding torch. Generally, when welding arcs, the welding torch is rotated by the robot's axis. During the rotation of the welding torch, the cable rotates synchronously. If the angle range of the welding arc is large, the torsion range of the cable will also increase, which will shorten the cable's lifespan and may even cause the cable to break during the welding process. Utility Model Content

[0003] The purpose of this application includes, for example, providing a rotating device that can effectively reduce the risk of cables being twisted and broken during welding.

[0004] The embodiments of this application can be implemented as follows:

[0005] An embodiment of this application provides a rotating device, which includes a first connecting shaft, a second connecting shaft, a welding torch head, and a cable. The first connecting shaft and the second connecting shaft are rotatably connected, and the axial directions of the first connecting shaft and the second connecting shaft are the same. The welding torch head is fixedly connected to the first connecting shaft, and the cable is fixedly connected to the second connecting shaft. The welding torch head is used to rotate under the drive of a robot.

[0006] Optionally, the first connecting shaft has a through hole along its own axial direction, one end of the second connecting shaft extends into the through hole, and the first connecting shaft and the second connecting shaft can rotate relative to each other.

[0007] Optionally, the rotating device further includes a first connecting sleeve, wherein the first connecting shaft passes through the first connecting sleeve and is threadedly connected to the first connecting sleeve; and a second connecting shaft passes through the first connecting sleeve and is rotatably connected to the first connecting sleeve.

[0008] Optionally, a second connecting sleeve is provided inside the first connecting sleeve, the second connecting sleeve is sleeved on the second connecting shaft, and the second connecting sleeve is in contact with both the first connecting sleeve and the second connecting shaft.

[0009] Optionally, the second connecting sleeve has a plurality of clamping parts arranged circumferentially along one end away from the first connecting shaft. The clamping parts are provided with a first conical surface, and the inner wall of the first connecting sleeve is provided with a second conical surface. The second conical surface cooperates with the first conical surface of the plurality of clamping parts so that the plurality of clamping parts clamp the second connecting shaft.

[0010] Optionally, the second connecting shaft is provided with an annular abutment portion, and a gasket and a spring are provided between the annular abutment portion and the second connecting sleeve, and the gasket and the spring are both sleeved on the second connecting shaft.

[0011] Optionally, the second connecting sleeve is made of copper alloy.

[0012] Optionally, the rotating device further includes a third connecting sleeve, to which the cable and the second connecting shaft are respectively fixedly connected.

[0013] Optionally, the rotating device further includes a protective sleeve, which is fitted over the third connecting sleeve and fixed relative to the third connecting sleeve, and the protective sleeve is used to cover part of the cable.

[0014] Optionally, the rotating device further includes a fourth connecting sleeve, on which a bolt is provided. The bolt passes through the fourth connecting sleeve and abuts against the first connecting shaft, and the welding torch head is fixedly connected to the fourth connecting sleeve.

[0015] The beneficial effects of the rotating device provided in this application include, for example, in order to effectively reduce the risk of the cable being twisted during the welding process, a rotating device is designed, which includes a first connecting shaft, a second connecting shaft, a welding torch head and a cable. The first connecting shaft and the second connecting shaft are rotatably connected, and the axial directions of the first connecting shaft and the second connecting shaft are the same. The welding torch head is fixedly connected to the first connecting shaft, and the cable is fixedly connected to the second connecting shaft. The welding torch head is used to rotate under the drive of a robot.

[0016] When the robot drives the welding torch head to rotate, since the welding torch head is fixedly connected to the first connecting shaft, while the first connecting shaft and the second connecting shaft are rotatably connected, and the cable is fixedly connected to the second connecting shaft, the first connecting shaft rotates with the welding torch head, while the second connecting shaft and the cable do not rotate with the welding torch head, thereby effectively reducing the risk of the cable being twisted and broken during the welding process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the rotating device in the embodiments of this application;

[0019] Figure 2 This is an exploded schematic diagram of the rotating device in an embodiment of this application;

[0020] Figure 3 This is a partial cross-sectional view of the rotating device in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the third connecting sleeve in the embodiments of this application;

[0022] Figure 5 This is a partial exploded view of the rotating device in an embodiment of this application.

[0023] Icons: 100-First connecting shaft; 110-Through hole; 200-Second connecting shaft; 210-Annular abutment part; 220-Gasket; 230-Spring piece; 300-Cable; 400-First connecting sleeve; 410-Second conical surface; 500-Second connecting sleeve; 510-Clamping part; 511-First conical surface; 600-Third connecting sleeve; 610-Third connecting shaft; 700-Protective sleeve; 800-Fourth connecting sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0030] As disclosed in the background section, welding arcs typically involves a robot axis driving a welding torch to rotate. This rotation of the torch causes the cable to rotate synchronously. If the arc angle is large, the cable's torsion range also increases, leading to a shortened cable lifespan and potentially even breakage during welding. Embodiments of this application provide a rotating device to at least address this technical problem.

[0031] Please refer to Figures 1-3 The rotating device provided in the embodiments of this application includes a first connecting shaft 100, a second connecting shaft 200, a welding torch head (not shown) and a cable 300. The first connecting shaft 100 and the second connecting shaft 200 are rotatably connected, and the axial directions of the first connecting shaft 100 and the second connecting shaft 200 are the same. The welding torch head is fixedly connected to the first connecting shaft 100, and the cable 300 is fixedly connected to the second connecting shaft 200. The welding torch head is used to rotate under the drive of the robot.

[0032] The first connecting shaft 100 and the second connecting shaft 200 are coaxially arranged and rotatably connected; the welding gun head is located on the side of the first connecting shaft 100 away from the second connecting shaft 200, and the cable 300 is located on the side of the second connecting shaft 200 away from the first connecting shaft 100; the robot is a drive device outside the rotating device. In this embodiment, the drive device is not limited, as long as it can drive the welding gun head to rotate.

[0033] When the robot drives the welding torch head to rotate, since the welding torch head is fixedly connected to the first connecting shaft 100, and the first connecting shaft 100 and the second connecting shaft 200 are rotatably connected, and the cable 300 is fixedly connected to the second connecting shaft 200, the first connecting shaft 100 rotates with the welding torch head, while the second connecting shaft 200 and the cable 300 do not rotate with the welding torch head, thereby effectively reducing the risk of the cable 300 being twisted off during the welding process.

[0034] In this embodiment, the first connecting shaft 100 has a through hole 110 along its own axial direction, one end of the second connecting shaft 200 extends into the through hole 110, and the first connecting shaft 100 and the second connecting shaft 200 can rotate relative to each other.

[0035] One end of the second connecting shaft 200 extends into the through hole 110, and the portion of the second connecting shaft 200 extending into the through hole 110 is rotatably engaged with the first connecting shaft 100.

[0036] In this embodiment, the rotating device further includes a first connecting sleeve 400, a first connecting shaft 100 passing through the first connecting sleeve 400 and being threadedly connected to the first connecting sleeve 400; and a second connecting shaft 200 passing through the first connecting sleeve 400 and being rotatably connected to the first connecting sleeve 400.

[0037] A portion of the first connecting shaft 100 extends into the first connecting sleeve 400 from one end and is threadedly connected to the first connecting sleeve 400, so that the first connecting shaft 100 and the first connecting sleeve 400 are relatively fixed; the end of the second connecting shaft 200 away from the first connecting shaft 100 extends out of the first connecting sleeve 400 from the other end, and the second connecting shaft 200 can rotate relative to the first connecting sleeve 400.

[0038] In this embodiment, a second connecting sleeve 500 is provided inside the first connecting sleeve 400. The second connecting sleeve 500 is sleeved on the second connecting shaft 200, and the second connecting sleeve 500 is in contact with both the first connecting sleeve 400 and the second connecting shaft 200.

[0039] When the cable 300 is energized, since the second connecting sleeve 500 is in contact with the first connecting sleeve 400 and the second connecting shaft 200 at the same time, the welding current generated by the cable 300 can be transmitted through the second connecting sleeve 500 to the first connecting sleeve 400 via the second connecting shaft 200, and then from the first connecting sleeve 400 to the first connecting shaft 100 and the welding torch head.

[0040] In this embodiment, a plurality of clamping portions 510 are provided along the circumference of the second connecting sleeve 500 at one end away from the first connecting shaft 100. A first conical surface 511 is provided on the clamping portion 510, and a second conical surface 410 is provided on the inner wall of the first connecting sleeve 400. The second conical surface 410 cooperates with the first conical surface 511 of the plurality of clamping portions 510 so that the plurality of clamping portions 510 clamp the second connecting shaft 200.

[0041] There is a gap between two adjacent clamping parts 510. The outer surface of the clamping part 510 is a first conical surface 511. The clamping part 510 is located at the front end of the second connecting sleeve 500. The outer surface of the rear end of the second connecting sleeve 500 is in contact with the inner wall of the first connecting sleeve 400.

[0042] When the first connecting sleeve 400 is connected to the first connecting shaft 100, the second conical surface 410 will simultaneously cooperate with the first conical surface 511 of multiple clamping parts 510, and the clamping parts 510 will undergo a certain deformation, thereby clamping the clamping parts 510 tightly to the second connecting shaft 200. At the same time, the outer surface of the rear end of the second connecting sleeve 500 is always in contact with the inner wall of the first connecting sleeve 400, so that the second connecting sleeve 500 can effectively transmit welding current.

[0043] In this embodiment, an annular abutment portion 210 is provided on the second connecting shaft 200, and a gasket 220 and a spring piece 230 are provided between the annular abutment portion 210 and the second connecting sleeve 500. The gasket 220 and the spring piece 230 are both sleeved on the second connecting shaft 200.

[0044] The outer diameter of the annular abutment portion 210 is larger than the outer diameter of the second connecting shaft 200, and the outer diameter of the annular abutment portion 210 is equal to the maximum inner diameter of the first connecting sleeve 400; the gasket 220 and the spring piece 230 are both sleeved on the second connecting shaft 200 and are located between the annular abutment portion 210 and the rear end of the second connecting sleeve 500.

[0045] There can be two shims 220. Both shims 220 and spring pieces 230 are annular. Spring piece 230 is sleeved on the second connecting shaft 200. The inner diameter of spring piece 230 is smaller than the inner diameter of shim 220, and spring piece 230 can play a role in preventing loosening. By adjusting the thickness of shims 220, the second connecting sleeve 500 can be tightly gripped to the second connecting shaft 200. It can be understood that the thickness of shims 220 can be adjusted according to actual working conditions.

[0046] In this embodiment, the second connecting sleeve 500 is made of copper alloy.

[0047] It should be noted that the second connecting sleeve 500 is made of a high-strength, high-conductivity copper alloy, which can reduce contact resistance and, to some extent, prevent the second connecting sleeve 500 from overheating when the welding torch head rotates. During installation, conductive adhesive can be added to the second connecting sleeve 500 to further reduce contact resistance, thereby preventing overheating during high-current welding.

[0048] Please combine Figure 4 In this embodiment, the rotating device also includes a third connecting sleeve 600, and the cable 300 and the second connecting shaft 200 are respectively fixedly connected to the third connecting sleeve 600.

[0049] The end of the second connecting shaft 200 away from the first connecting shaft 100 extends into the third connecting sleeve 600 from one end of the third connecting sleeve 600 and is threadedly connected to the third connecting sleeve 600. The other end of the third connecting sleeve 600 is provided with a third connecting shaft 610. The cable 300 is sleeved on the third connecting shaft 610 and is interference-fitted with the third connecting sleeve 600, thereby being relatively fixed to the third connecting shaft 610.

[0050] In this embodiment, the rotating device also includes a protective sleeve 700, which is sleeved on the outside of the third connecting sleeve 600 and fixed relative to the third connecting sleeve 600. The protective sleeve 700 is used to cover part of the cable 300.

[0051] The protective sleeve 700 is fitted outside the third connecting sleeve 600 and is interference-fitted with the third connecting sleeve 600, so that the protective sleeve 700 and the third connecting sleeve 600 are relatively fixed; the protective sleeve 700 can cover the part where the cable 300 is connected to the third connecting sleeve 600, and play a protective role for the cable 300.

[0052] Please combine Figure 5 In this embodiment, the rotating device also includes a fourth connecting sleeve 800, on which a bolt is provided. The bolt passes through the fourth connecting sleeve 800 and abuts against the first connecting shaft 100. The welding torch head is fixedly connected to the fourth connecting sleeve 800.

[0053] The bolt extends in a direction perpendicular to the axis of the fourth connecting sleeve 800. One end of the bolt passes through the fourth connecting sleeve 800 and abuts against the first connecting shaft 100, so that the fourth connecting sleeve 800 is simultaneously fixed relative to the first connecting shaft 100 and the welding torch head.

[0054] In one optional embodiment, the welding torch tip passes through the fourth connecting sleeve 800 and is interference-fitted with the fourth connecting sleeve 800, thereby achieving a connection between the welding torch tip and the fourth connecting sleeve 800. In other embodiments, the welding torch tip may also be fixed relative to the fourth connecting sleeve 800 by bolts, and this is not limited.

[0055] The working principle of the rotating device provided in this application embodiment is as follows: When the robot drives the welding gun head to rotate, since the welding gun head is fixedly connected to the first connecting shaft 100 through the fourth connecting sleeve 800, and the first connecting shaft 100 and the second connecting shaft 200 are rotatably connected, and the cable 300 is fixedly connected to the second connecting shaft 200 through the third connecting sleeve 600, at this time the first connecting shaft 100, the first connecting sleeve 400 and the fourth connecting sleeve 800 rotate with the welding gun head, while the second connecting shaft 200, the second connecting sleeve 500, the third connecting sleeve 600, the cable 300 and the protective sleeve 700 do not rotate with the welding gun head, thereby effectively reducing the risk of the cable 300 being twisted off during the welding process.

[0056] The beneficial effects of the rotating device provided in this application include at least the following: effectively reducing the risk of the cable 300 being twisted during the welding process; extending the life of the cable 300 by two to three years; and allowing the cable 300 to be removed at any time in case of failure, thus reducing maintenance costs.

[0057] In summary, the embodiments of this application provide a rotating device, which includes a first connecting shaft 100, a second connecting shaft 200, a welding torch head, and a cable 300. The welding torch head is fixedly connected to the first connecting shaft 100, while the first connecting shaft 100 and the second connecting shaft 200 are rotatably connected. The cable 300 is fixedly connected to the second connecting shaft 200. When the robot drives the welding torch head to rotate, the first connecting shaft 100 rotates with the welding torch head, while the second connecting shaft 200 and the cable 300 do not rotate with the welding torch head, thereby effectively reducing the risk of the cable 300 being twisted during the welding process.

[0058] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating device, characterized by, The rotating device comprises a first connecting shaft, a second connecting shaft, a welding gun head and a cable, the first connecting shaft and the second connecting shaft are rotationally connected and have the same axial direction, the welding gun head is fixedly connected with the first connecting shaft, and the cable is fixedly connected with the second connecting shaft, and the welding gun head is used to rotate under the driving of a robot.

2. The rotating device of claim 1, wherein The first connecting shaft is provided with a through hole along the axial direction thereof, one end of the second connecting shaft extends into the through hole, and the first connecting shaft and the second connecting shaft can rotate relative to each other.

3. The rotating device of claim 1, wherein, The rotating device further comprises a first connecting sleeve, the first connecting shaft is arranged in the first connecting sleeve, and the first connecting shaft is threadedly connected with the first connecting sleeve; the second connecting shaft is arranged in the first connecting sleeve, and the second connecting shaft is rotationally connected with the first connecting sleeve.

4. The rotating device of claim 3, wherein, The first connecting sleeve is provided with a second connecting sleeve, the second connecting sleeve is sleeved on the second connecting shaft, and the second connecting sleeve is in contact with the first connecting sleeve and the second connecting shaft.

5. The rotating device of claim 4, wherein, An end of the second connecting sleeve away from the first connecting shaft is provided with a plurality of clamping portions along the circumferential direction of the second connecting sleeve, the clamping portions are provided with first tapered surfaces, the inner wall of the first connecting sleeve is provided with second tapered surfaces, the second tapered surfaces are in cooperation with the first tapered surfaces of the plurality of clamping portions, so that the plurality of clamping portions are clamped on the second connecting shaft.

6. The rotating device of claim 4, wherein, The second connecting shaft is provided with an annular abutting portion, and a gasket and a spring are arranged between the annular abutting portion and the second connecting sleeve, and the gasket and the spring are sleeved on the second connecting shaft.

7. The rotating device of claim 4, wherein, The second connecting sleeve is made of copper alloy.

8. The rotating device of claim 1, wherein, The rotating device further comprises a third connecting sleeve, and the cable and the second connecting shaft are fixedly connected with the third connecting sleeve.

9. The rotating device of claim 8, wherein, The rotating device further comprises a protective sleeve, the protective sleeve is sleeved on the third connecting sleeve and is fixed relative to the third connecting sleeve, and the protective sleeve is used to cover part of the cable.

10. The rotating device of claim 1, wherein, The rotating device further comprises a fourth connecting sleeve, the fourth connecting sleeve is provided with a bolt, the bolt abuts against the first connecting shaft after penetrating through the fourth connecting sleeve, and the welding gun head is fixedly connected with the fourth connecting sleeve.

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