Automatic welding device for heat exchange tube

Abstract

The utility model relates to the technical field of heat exchange tube welding, in particular to an automatic welding device for heat exchange tubes, which comprises a welding head, an X-axis translation mechanism, a lifting mechanism and a Y-axis translation mechanism, the lifting mechanism is connected onto the X-axis translation mechanism, the Y-axis translation mechanism is connected onto the lifting mechanism, and the front side of the Y-axis translation mechanism is connected with a first motor. The output end of the first motor is connected with a rotating frame, the middle of the rotating frame is connected with a long rod, the front end of the long rod is rotationally connected with a positioning rod, the welding head is arranged on one side of the long rod and fixedly connected with the rotating frame, the positioning rod is inserted into a pipe hole, positioning is formed, and the positioning effect is improved; and then the first motor drives the welding head to rotate around the outer side of the pipe hole for welding through the rotating frame, the welding effect is improved, and the automation degree and the welding efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger tube welding technology, and in particular to an automatic heat exchanger tube welding device. Background Technology

[0002] Tube sheet heat exchangers are energy-saving devices that enable heat transfer between materials. Currently, tube sheet heat exchangers are manufactured by welding heat exchange tubes to the tube sheet. However, this requires manual operation, where the welding torch is aimed at the location of each tube hole. This process results in low automation, low welding efficiency, and high manual labor intensity. It is not only labor-intensive but also has poor positioning effect, which in turn affects the welding result. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic welding device for heat exchange tubes with a high degree of automation, high welding efficiency, and improved positioning and welding effects.

[0004] The technical solution adopted in this utility model is as follows:

[0005] An automatic welding device for heat exchange tubes includes a welding head, an X-axis translation mechanism, a lifting mechanism, and a Y-axis translation mechanism. The lifting mechanism is connected to the X-axis translation mechanism, the Y-axis translation mechanism is connected to the lifting mechanism, and a first motor is connected to its front side. A rotating frame is connected to the output end of the first motor. A long rod is connected to the middle of the rotating frame, and a positioning rod is rotatably connected to the front end of the long rod. The welding head is disposed on one side of the long rod and is fixedly connected to the rotating frame.

[0006] Preferably, the X-axis translation mechanism includes an X-axis translation frame, a base, and a second motor. The X-axis translation frame is slidably connected to the base, and a rack is provided on the base. The second motor is fixed on the X-axis translation frame, and its output end is connected to a gear, which meshes with the rack.

[0007] Preferably, the base has several support feet connected to its bottom.

[0008] Preferably, the support foot includes a tab, a stud, and a support plate. The tab is fixedly connected to the base, the stud is threadedly connected to the tab and fixed to the top of the support plate, and the support plate has a fixing hole through which a screw is inserted.

[0009] Preferably, the lifting mechanism includes a stand, a lifting frame, and a third motor. The lifting frame is slidably connected to the front side of the stand and is connected to a first nut. The third motor is fixed to the stand and its output end is connected to a first screw. The first screw and the first nut are connected by threads.

[0010] Preferably, the Y-axis translation mechanism includes a Y-axis translation frame, a mounting base, and a fourth motor. The Y-axis translation frame is slidably connected to the mounting base and is connected to a second nut. The fourth motor is fixed on the mounting base and its output end is connected to a second screw. The second screw and the second nut are connected by a thread. The first motor is fixed on the Y-axis translation frame.

[0011] Preferably, the end of the positioning rod is chamfered.

[0012] Preferably, a camera is installed on the side of the long rod away from the welding head, and the camera is fixed on the rotating frame.

[0013] Preferably, the outer side of the first motor is provided with a protective cover.

[0014] The beneficial effects of this utility model are as follows:

[0015] This automatic welding device for heat exchange tubes improves the positioning effect by inserting a positioning rod into the tube hole to form a positioning. Then, the first motor drives the welding head to rotate around the outside of the tube hole through the rotating frame to perform welding, which improves the welding effect, as well as the degree of automation and welding efficiency. Attached Figure Description

[0016] Figure 1 This is a first perspective view of the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the protective shield.

[0018] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0019] Figure 4 This is a second perspective view of the present invention.

[0020] In the diagram: 1. Welding head; 2. X-axis translation mechanism; 201. X-axis translation frame; 202. Base; 203. Second motor; 204. Rack; 205. Gear; 3. Lifting mechanism; 301. Stand; 302. Lifting frame; 303. Third motor; 304. First nut; 305. First screw; 4. Y-axis translation mechanism; 401. Y-axis translation frame; 402. Mounting seat; 403. Fourth motor; 404. Second nut; 405. Second screw; 5. First motor; 6. Rotating frame; 7. Long rod; 8. Positioning rod; 9. Support foot; 901. Protrusion; 902. Stud; 903. Support plate; 904. Fixing hole; 10. Chamfer; 11. Camera; 12. Protective cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution: an automatic welding device for heat exchange tubes, including a welding head 1, an X-axis translation mechanism 2, a lifting mechanism 3, and a Y-axis translation mechanism 4. The lifting mechanism 3 is connected to the X-axis translation mechanism 2, the Y-axis translation mechanism 4 is connected to the lifting mechanism 3, and a first motor 5 is connected to its front side. The output end of the first motor 5 is connected to a rotating frame 6. A long rod 7 is connected to the middle of the rotating frame 6, and a positioning rod 8 is rotatably connected to the front end of the long rod 7. The welding head 1 is disposed on one side of the long rod 7 and is fixedly connected to the rotating frame 6.

[0023] The X-axis translation mechanism 2 drives the lifting mechanism 3 to move left and right to different horizontal positions. The lifting mechanism 3 drives the Y-axis translation mechanism 4 to rise and fall to different vertical positions, thereby driving the long rod 7 to reach the tube hole positions of different heat exchange tubes. The Y-axis translation mechanism 4 drives the positioning rod 8 to move forward, so that the positioning rod 8 is inserted into the tube hole to form a positioning and improve the positioning effect. Then, the first motor 5 drives the welding head 1 to rotate around the outside of the tube hole through the rotating frame 6 to perform welding, which improves the welding effect, as well as the degree of automation and welding efficiency.

[0024] In order to facilitate the movement of the welding head 1 to different horizontal positions, in this embodiment, preferably, the X-axis translation mechanism 2 includes an X-axis translation frame 201, a base 202, and a second motor 203. The X-axis translation frame 201 is slidably connected to the base 202. The base 202 is provided with a rack 204. The second motor 203 is fixed on the X-axis translation frame 201, and its output end is connected to a gear 205. The gear 205 is meshed with the rack 204.

[0025] The purpose is to drive the gear 205 to rotate via the second motor 203, thereby causing the gear 205 to move along the rack 204, which in turn drives the X-axis translation frame 201 to slide along the base 202, making it easier to move the welding head 1 to different horizontal positions.

[0026] In order to facilitate the support of the base 202, in this embodiment, preferably, the bottom of the base 202 is connected with a number of support feet 9.

[0027] To ensure that the base 202 is horizontally positioned, in this embodiment, preferably, the support foot 9 includes a protrusion 901, a stud 902, and a support plate 903. The protrusion 901 is fixedly connected to the base 202, the stud 902 is threadedly connected to the protrusion 901, and is fixed to the top of the support plate 903. The support plate 903 is provided with a fixing hole 904, through which a screw is inserted.

[0028] The purpose is to rotate the support plate 903 so that the stud 902 can be raised or lowered relative to the convex plate 901, thereby adjusting the height of the support foot 9, ensuring that the height of each support foot 9 is consistent, and thus ensuring that the base 202 is set horizontally. The support plate 903 is then fixed to the ground by screws passing through the fixing hole 904, thereby improving the stability of the structure.

[0029] In order to facilitate lifting the welding head 1 to different vertical positions, in this embodiment, preferably, the lifting mechanism 3 includes a stand 301, a lifting frame 302 and a third motor 303. The lifting frame 302 is slidably connected to the front side of the stand 301 and is connected to a first nut 304. The third motor 303 is fixed on the stand 301 and its output end is connected to a first screw 305. The first screw 305 and the first nut 304 are connected by threads.

[0030] The purpose is to drive the first screw 305 to rotate via the third motor 303, and then drive the lifting frame 302 to slide and lift along the upright frame 301 via the first nut 304, so as to facilitate the lifting of the welding head 1 to different vertical positions.

[0031] To facilitate the forward movement of the positioning rod 8 and its insertion into the pipe hole for positioning, in this embodiment, preferably, the Y-axis translation mechanism 4 includes a Y-axis translation frame 401, a mounting base 402, and a fourth motor 403. The Y-axis translation frame 401 is slidably connected to the mounting base 402 and is connected to a second nut 404. The fourth motor 403 is fixed to the mounting base 402 and its output end is connected to a second screw 405. The second screw 405 and the second nut 404 are connected by threads. The first motor 5 is fixed to the Y-axis translation frame 401.

[0032] The purpose is to drive the second screw 405 to rotate via the fourth motor 403, and then drive the Y-axis translation frame 401 to slide and translate along the mounting base 402 via the second nut 404, so as to facilitate the forward movement of the positioning rod 8 and insert the positioning rod 8 into the pipe hole to form a positioning.

[0033] In order to facilitate the insertion of the positioning rod 8 into the pipe hole, in this embodiment, preferably, the end of the positioning rod 8 is provided with a chamfer 10, the purpose of which is to facilitate the accurate insertion of the positioning rod 8 into the pipe hole by means of the chamfer 10.

[0034] To facilitate the detection of welding effect, in this embodiment, preferably, a camera 11 is provided on the side of the long rod 7 away from the welding head 1. The camera 11 is fixed on the rotating frame 6. The purpose is to allow the camera 11 to rotate around the outside of the pipe hole to take pictures while the first motor 5 drives the welding head 1 to rotate around the outside of the pipe hole to perform welding through the rotating frame 6, so as to identify the welding effect by capturing images.

[0035] In order to extend the service life of the equipment, in this embodiment, preferably, a protective cover 12 is provided on the outside of the first motor 5. The purpose is to protect the first motor 5 by the protective cover 12, prevent damage to the first motor 5 during welding, and extend the service life of the equipment.

[0036] To facilitate smoother rotation of the long rod 7, in this embodiment, preferably, the positioning rod 8 is rotatably connected to the long rod 7 via a bearing, so that the long rod 7 can rotate smoothly when the positioning rod 8 is inserted into the tube hole.

[0037] The working principle and usage process of this utility model are as follows: The second motor 203 drives the gear 205 to rotate, which in turn causes the gear 205 to move along the rack 204, thereby driving the X-axis translation frame 201 to slide along the base 202, facilitating the movement of the welding head 1 to different horizontal positions. The third motor 303 drives the first screw 305 to rotate, which in turn causes the lifting frame 302 to slide and rise along the upright frame 301 via the first nut 304, facilitating the movement of the welding head 1 to different vertical positions. The fourth motor 403 drives the second screw 405 to rotate, which in turn causes the Y-axis translation frame 401 to slide and move along the mounting base 402 via the second nut 404, facilitating the movement of the positioning rod 8 forward, allowing the positioning rod 8 to be inserted into the pipe hole for positioning. Then, the first motor 5 drives the welding head 1 to rotate around the outside of the pipe hole for welding via the rotating frame 6, improving the welding effect, automation, and welding efficiency. At the same time, the camera 11 rotates around the outside of the pipe hole to capture images, and the welding effect is recognized through the captured images.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic welding device for heat exchange tubes, comprising a welding head (1), characterized in that: It also includes an X-axis translation mechanism (2), a lifting mechanism (3) and a Y-axis translation mechanism (4). The lifting mechanism (3) is connected to the X-axis translation mechanism (2), and the Y-axis translation mechanism (4) is connected to the lifting mechanism (3). A first motor (5) is connected to the front side of the lifting mechanism (4). A rotating frame (6) is connected to the output end of the first motor (5). A long rod (7) is connected to the middle of the rotating frame (6). A positioning rod (8) is rotatably connected to the front end of the long rod (7). The welding head (1) is set on one side of the long rod (7) and is fixedly connected to the rotating frame (6).

2. The automatic welding device for heat exchange tubes according to claim 1, characterized in that: The X-axis translation mechanism (2) includes an X-axis translation frame (201), a base (202), and a second motor (203). The X-axis translation frame (201) is slidably connected to the base (202). A rack (204) is provided on the base (202). The second motor (203) is fixed on the X-axis translation frame (201), and its output end is connected to a gear (205). The gear (205) meshes with the rack (204).

3. The automatic welding device for heat exchange tubes according to claim 2, characterized in that: The bottom of the base (202) is connected to several support feet (9).

4. The automatic welding device for heat exchange tubes according to claim 3, characterized in that: The support foot (9) includes a protrusion (901), a stud (902), and a support plate (903). The protrusion (901) is fixedly connected to the base (202). The stud (902) is threadedly connected to the protrusion (901) and fixed to the top of the support plate (903). The support plate (903) is provided with a fixing hole (904), and a screw is inserted through the fixing hole (904).

5. The automatic welding device for heat exchange tubes according to claim 1, characterized in that: The lifting mechanism (3) includes a stand (301), a lifting frame (302) and a third motor (303). The lifting frame (302) is slidably connected to the front side of the stand (301) and is connected to a first nut (304). The third motor (303) is fixed on the stand (301) and its output end is connected to a first screw (305). The first screw (305) and the first nut (304) are connected by threads.

6. The automatic welding device for heat exchange tubes according to claim 1, characterized in that: The Y-axis translation mechanism (4) includes a Y-axis translation frame (401), a mounting base (402), and a fourth motor (403). The Y-axis translation frame (401) is slidably connected to the mounting base (402) and is connected to a second nut (404). The fourth motor (403) is fixed on the mounting base (402) and its output end is connected to a second screw (405). The second screw (405) and the second nut (404) are connected by threads. The first motor (5) is fixed on the Y-axis translation frame (401).

7. The automatic welding device for heat exchange tubes according to claim 1, characterized in that: The end of the positioning rod (8) is chamfered (10).

8. The automatic welding device for heat exchange tubes according to claim 1, characterized in that: A camera (11) is provided on the side of the long rod (7) away from the welding head (1), and the camera (11) is fixed on the rotating frame (6).

9. The automatic welding device for heat exchange tubes according to claim 1, characterized in that: The first motor (5) is provided with a protective cover (12) on its outer side.

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