An automatic welding device for heat exchanger header cover

Abstract

The utility model discloses a kind of automatic welding device for heat exchanger header gland, comprising: support frame, the middle part of support frame is rotatably connected with three-jaw chuck, the middle part of support frame is fixedly connected with the driving part of driving three-jaw chuck;Supporting assembly, supporting assembly is placed in the side of the support frame, and the supporting assembly includes two supporting wheels, for supporting header;Supporting rod, supporting rod is placed in the side of support table, the beneficial effects of the utility model are: through reduction gear and driving motor drive three-jaw chuck rotation, and then drive heat exchanger header and gland rotation, cooperate with welding torch to carry out annular welding, avoid artificial sustained handheld welding torch welding, reduce labor intensity;Through positioning sliding table two and adjusting screw, the position of positioning shell can be adjusted, so that its center and the center of heat exchanger header correspond, ensure that gland can be accurately pressed and adhere to the end of heat exchanger header, improve the precision and consistency of welding.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger manifold welding technology, specifically an automatic welding device that facilitates the sealing of heat exchanger manifolds. Background Technology

[0002] Welding of the heat exchanger manifold caps is a critical process step in heat exchanger manufacturing. It is mainly to ensure the sealing and structural strength between the manifold (usually the inlet and outlet pipes of the heat exchanger) and the caps to prevent media leakage. The caps are the end caps at both ends of the manifold. The industry generally uses manual welding, where workers hold a welding torch to weld the joints. Manual welding requires a high level of physical strength and energy from the operators, especially during long periods of welding, which can lead to operator fatigue, thereby affecting the welding quality and personnel safety. Utility Model Content

[0003] The purpose of this invention is to provide an automatic welding device for sealing heat exchanger manifolds, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic welding device for sealing heat exchanger manifolds, comprising: A support frame, with a three-jaw chuck rotatably connected to the middle of the support frame, and a drive unit for driving the three-jaw chuck fixedly connected to the middle of the support frame. A support assembly is placed on one side of the support frame, and the support assembly includes two support wheels for supporting the manifold; A support rod is placed on one side of a support platform. A welding torch and a second positioning slide are adjustablely mounted on the top of the support rod. An adjusting screw is threadedly connected to the middle of the second positioning slide. One end of the adjusting screw is rotatably connected to a positioning housing for installing and positioning the cover.

[0005] Preferably, the drive unit includes a speed reducer fixedly connected to the middle of the support frame, a drive motor fixedly connected to the input end of the speed reducer, and the three-jaw chuck fixedly connected to the output end of the speed reducer.

[0006] Preferably, the support assembly further includes a support, on the top of which a scissor jack is mounted.

[0007] Preferably, the top of the scissor jack is fixedly connected to a support platform, and the support wheels are symmetrically installed on the top of the support platform.

[0008] Preferably, a positioning slide is adjustablely mounted on the outer side of the support rod, and the end of the positioning slide is fixedly connected to the support rod.

[0009] Preferably, one end of the support rod is fixedly connected to a connecting block, and the end of the welding gun is fixedly connected to the connecting block.

[0010] Compared with existing technologies, the advantages of this utility model are as follows: The three-jaw chuck is driven to rotate by a reducer and a drive motor, which in turn drives the heat exchanger manifold and the cap to rotate, enabling circumferential welding with a welding torch. This avoids the need for continuous manual welding with the torch, reducing labor intensity. The positioning slide and adjusting screw allow for adjustment of the positioning housing's position, ensuring its center aligns with the center of the heat exchanger manifold. This ensures the cap is accurately pressed against the end of the heat exchanger manifold, improving welding precision and consistency. The positioning housing is threadedly connected to the adjusting screw via a metal tube, allowing for the replacement of different specifications of positioning housing to accommodate caps of different sizes. The height of the support platform can be adjusted using a scissor jack to accommodate heat exchanger manifolds of different diameters, ensuring the manifold can rotate with the support wheels while being supported. The height of the welding torch can be flexibly adjusted using the positioning slide and bolts, allowing for adjustments based on actual conditions. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the support frame of this utility model; Figure 3 This is a schematic diagram of the positioning shell of this utility model; Figure 4 This is a schematic diagram of the position and structure of the welding torch of this utility model; Figure 5 This is a schematic diagram of the scissor jack of this utility model.

[0012] In the diagram: 1. Support frame; 2. Reducer; 3. Drive motor; 4. Three-jaw chuck; 5. Support; 6. Scissor jack; 7. Support platform; 8. Support wheel; 9. Support rod; 10. Positioning slide one; 11. Support rod one; 12. Connecting block; 13. Welding torch; 14. Positioning slide two; 15. Adjusting screw; 16. Positioning housing. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1 , 2As shown in Figures 3, 4, and 5, this utility model provides a technical solution: an automatic welding device for sealing heat exchanger manifolds, comprising: a support frame 1, a three-jaw chuck 4 rotatably connected to the middle of the support frame 1, and a drive unit for driving the three-jaw chuck 4 fixedly connected to the middle of the support frame 1; a support assembly placed on one side of the support frame 1, the support assembly including two support wheels 8 for supporting the manifolds; a support rod 9 placed on one side of the support platform 7, the top of the support rod 9 being adjustablely mounted with a welding torch 13 and a positioning slide 14, the welding torch 13 being an argon arc welding torch, the middle of the positioning slide 14 being threadedly connected with an adjusting screw 15, one end of the adjusting screw 15 being rotatably connected to a positioning housing 16 for installing and positioning the sealing cap, the positioning housing 16 being a cavity with an opening on one side, and its inner diameter being adapted to the outer diameter of the sealing cap, one side of the positioning housing 16 being rotatably connected to a metal tube via a bearing, the metal tube being threadedly connected to the end of the adjusting screw 15, thereby allowing for the replacement of positioning housings 16 of different specifications as needed.

[0015] It should be noted that in this embodiment, a controller and a control switch button are provided. One end of the heat exchanger manifold is clamped in the middle of the three-jaw chuck 4, and the other end of the heat exchanger manifold is placed between the two support wheels 8. The height of the positioning slide 14 is adjusted so that the center of the positioning housing 16 corresponds to the center of the heat exchanger manifold. The circular cover is inserted into the positioning housing 16. By rotating the adjusting screw 15, the adjusting screw 15 drives the positioning housing 16 to move towards the heat exchanger manifold. The positioning housing 16 presses the cover tightly against the end of the heat exchanger manifold. The welding end of the welding torch 13 is adjusted to be at the joint between the heat exchanger manifold and the cover. The drive unit drives the three-jaw chuck 4 to rotate. The three-jaw chuck 4 drives the heat exchanger manifold to rotate slowly. Under the action of friction, the heat exchanger manifold drives the cover to rotate. The power switch of the welding torch 13 is turned on, so that the welding torch 13 performs circumferential welding on the joint.

[0016] The drive unit includes a reducer 2 fixedly connected to the middle of the support frame 1, a drive motor 3 fixedly connected to the input end of the reducer 2, and a three-jaw chuck 4 fixedly connected to the output end of the reducer 2.

[0017] It should be noted that in this embodiment, the support frame 1 includes two side plates and a metal frame supporting the side plates. The reducer 2 is located between the two side plates. The drive motor 3 drives the three-jaw chuck 4 to rotate slowly through the reducer 2. The three-jaw chuck 4 drives the manifold and the cover to rotate, so that they can cooperate with the welding torch 13 for welding.

[0018] The support assembly also includes a support 5, on the top of which a scissor jack 6 is mounted, and on the top of the scissor jack 6 a support platform 7 is fixedly connected, with support wheels 8 symmetrically mounted on the top of the support platform 7.

[0019] It should be noted that in this embodiment, the support frame 1, the support 5, and the support rod 9 can all be fixed to the workbench by bolts. According to the diameter of the manifold, the height of the support platform 7 can be adjusted by rotating the threaded rod in the middle of the scissor jack 6, so as to adapt to pipes of different diameters. The support platform 7 drives the support wheel 8 to rise and fall, so that the support wheel 8 provides support for the bottom of the manifold, and can rotate with the support wheel 8 while providing support.

[0020] A positioning slide 10 is adjustablely installed on the outside of the support rod 9. A support rod 11 is fixedly connected to the end of the positioning slide 10. A connecting block 12 is fixedly connected to one end of the support rod 11. The end of the welding torch 13 is fixedly connected to the connecting block 12.

[0021] It should be noted that in this embodiment, both the second positioning slide 14 and the first positioning slide 10 are threaded with bolts in the middle, which are used to fix the second positioning slide 14 and the first positioning slide 10 at the designated position of the support rod 9. The height of the second positioning slide 14 can be adjusted by loosening or loosening the bolts, thereby adjusting the position height of the positioning housing 16. The height of the first support rod 11 can be adjusted by the first positioning slide 10 and the bolts. The height of the welding gun 13 can be adjusted by the first support rod 11 and the connecting block 12, so that it can be flexibly adjusted according to the actual situation.

[0022] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for sealing heat exchanger manifolds, characterized in that: include: The support frame (1) is rotatably connected to the middle of the support frame (1), and the drive part of the drive three-jaw chuck (4) is fixedly connected to the middle of the support frame (1). A support assembly is placed on one side of the support frame (1), and the support assembly includes two support wheels (8) for supporting the manifold; Support rod (9) is placed on one side of support platform (7). The top of support rod (9) is adjustablely equipped with welding gun (13) and positioning slide two (14). The middle part of positioning slide two (14) is threaded with adjusting screw (15). One end of adjusting screw (15) is rotatably connected to positioning housing (16) for installing and positioning cover.

2. The automatic welding device for sealing heat exchanger manifolds according to claim 1, characterized in that: The drive unit includes a speed reducer (2) fixedly connected to the middle of the support frame (1), a drive motor (3) fixedly connected to the input end of the speed reducer (2), and a three-jaw chuck (4) fixedly connected to the output end of the speed reducer (2).

3. The automatic welding device for sealing heat exchanger manifolds according to claim 1, characterized in that: The support assembly also includes a support (5), on the top of which a scissor jack (6) is mounted.

4. The automatic welding device for sealing heat exchanger manifolds according to claim 3, characterized in that: The top of the scissor jack (6) is fixedly connected to a support platform (7), and the support wheels (8) are symmetrically installed on the top of the support platform (7).

5. The automatic welding device for sealing heat exchanger manifolds according to claim 1, characterized in that: The outer side of the support rod (9) is adjustablely equipped with a positioning slide (10), and the end of the positioning slide (10) is fixedly connected to the support rod (11).

6. The automatic welding device for sealing heat exchanger manifolds according to claim 5, characterized in that: One end of the support rod (11) is fixedly connected to a connecting block (12), and the end of the welding gun (13) is fixedly connected to the connecting block (12).

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