Welding equipment with auxiliary positioning structure for heat exchanger machining

Abstract

The utility model discloses welding equipment with an auxiliary positioning structure for heat exchanger processing, which relates to the technical field of tubular heat exchangers and comprises two welding fixing boxes and an automatic heat exchanger welding device. Two wheels are fixedly mounted at the bottoms of the two welding fixing boxes, two sliding blocks are slidably connected to the interiors of the welding fixing boxes, and arc-shaped clamping plates used for assisting in positioning are welded to the tops of the two sliding blocks; the automatic welding device for the heat exchanger comprises a circular ring, a large gear, a welding device, a positioning clamping block, a servo motor and a small gear, the large gear is fixedly connected to the surface of the circular ring in a sleeving mode, the welding device is fixedly installed on the inner surface of the circular ring, the positions of two cylinders are fixed through four arc-shaped clamping plates, and the distance between the two cylinders is adjusted through a hydraulic telescopic rod; and the cylinders can be prevented from moving in the welding process, the stability of the two cylinders in the welding process is guaranteed, and then the welding quality of the two cylinders is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular heat exchangers, in particular to welding equipment for heat exchanger processing with an auxiliary positioning structure. Background Art

[0002] A tubular heat exchanger is a partition-type heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. It is a device that transfers part of the heat of the hot fluid to the cold fluid. In industrial production such as petroleum, chemical, light industry, pharmaceutical, and energy, tubular heat exchangers are often used to cool high-temperature fluids. During the production and processing of tubular heat exchangers, welding equipment needs to be used to weld their outer shells.

[0003] The currently published patent: CN216758799U discloses a heat exchanger welding positioning device and a heat exchanger welding equipment. The welding equipment supports the heat exchanger by arranging two circular shafts on the left and right sides of the base. The distance between the axes of the two circular shafts in the front and back directions is consistent. When the heat exchanger needs to weld two or more cylinders, the two or more cylinders can be placed on the channel and supported by the two circular shafts. Then, all the cylinders on the two circular shafts are coaxial. Then, the cylinders are moved forward and backward to make the two adjacent cylinders docked and welded. By rotating the circular shaft, the cylinder can be driven to rotate, so that the cylinders can be welded in sequence for a full circle at the same position during welding.

[0004] Based on the above search, it was found that the above patent has the following problems when in use: although the welding equipment can ensure that the two cylinders are on the same axis when in use, it does not fix the left and right positions of the cylinders. The cylinders are prone to move in the left and right directions during the welding process, which affects the stability of the two cylinders during the welding process and reduces the welding quality between the two cylinders. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a welding device for heat exchanger processing with an auxiliary positioning structure, which can solve the problem that the cylinder is prone to move in the left and right directions during the welding process, affecting the stability of the two cylinders during the welding process and reducing the welding quality between the two cylinders.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding device for heat exchanger processing with an auxiliary positioning structure, comprising two welding fixing boxes and an automatic welding device for the heat exchanger; two wheels are fixedly installed at the bottom of the two welding fixing boxes, two sliders are slidably connected inside the welding fixing boxes, arc-shaped clamping plates for auxiliary positioning are welded on the tops of the two sliders, a mounting base is welded on the front side of the right welding fixing box, a hydraulic telescopic rod is fixedly installed on the surface of the mounting base, and the hydraulic telescopic rod is connected to the left welding fixing box; the automatic welding device for the heat exchanger comprises a circular ring, a large gear, a welder, a positioning block, a servo motor and a small gear, the large gear is fixedly sleeved on the surface of the circular ring, the welder is fixedly installed on the inner surface of the circular ring, an annular groove is opened on the surface of the circular ring, the positioning block is slidably connected to the inside of the annular groove, the positioning block is fixedly connected to the surface of the left welding fixing box, and the servo motor is fixedly installed on the bottom of the left welding fixing box.

[0007] Preferably, the internal threads of the two sliding blocks are sleeved with threaded rods, and the front and rear ends of the threaded rods are provided with threads in opposite directions.

[0008] Preferably, the front end of the threaded rod is rotatably connected to the inner wall of the welding fixing box, the rear end of the threaded rod is fixedly connected to a circular turntable, and the interiors of the two welding fixing boxes are provided with the same structure.

[0009] Preferably, a moving protrusion is welded on the front side of the left-side welded fixing box, and the output end of the hydraulic telescopic rod is fixedly connected to the surface of the moving protrusion.

[0010] Preferably, the pinion is fixedly connected to the output end of the servo motor, and the pinion is meshingly connected to the large gear.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the heat exchanger processing welding equipment with an auxiliary positioning structure fixes the positions of the two cylinders through four arc-shaped clamping plates, and adjusts the distance between the two cylinders through a hydraulic telescopic rod, which can prevent the cylinders from moving during the welding process, ensure the stability of the two cylinders during the welding process, and thus improve the welding quality between the two cylinders. The heat exchanger processing welding equipment with an auxiliary positioning structure, the small gear rotates and drives the ring to rotate at the welding position of the two cylinders through the meshing action between the small gear and the large gear, and the ring is positioned by the positioning block to ensure the stability of the ring rotation. The ring rotates around the center of the cylinder once to drive the welder to rotate once to weld the two cylinders once, and the staff no longer needs to manually weld the cylinders, reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the overall structure of a welding device for heat exchanger processing with an auxiliary positioning structure according to the utility model;

[0014] Figure 2 This is a schematic diagram of the surface structure of the hydraulic telescopic rod of the utility model;

[0015] Figure 3 This is a schematic diagram of the bottom structure of a welding device for heat exchanger processing with an auxiliary positioning structure according to the utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the welding fixing box of the utility model;

[0017] Figure 5 It is a schematic diagram of the cross-sectional structure of the circular ring of the utility model.

[0018] Figure numerals: 1. welding fixing box; 2. wheel; 3. slider; 4. arc-shaped clamping plate; 5. threaded rod; 6. circular turntable; 7. circular ring; 8. large gear; 9. welding machine; 10. annular groove; 11. positioning block; 12. servo motor; 13. small gear; 14. mounting base; 15. hydraulic telescopic rod; 16. moving bump. DETAILED DESCRIPTION

[0019] This section will describe the specific embodiments of the utility model in detail. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model. In the description of the utility model, it should be understood that the directions or positional relationships indicated by the description of the orientation, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] See also Figure 1-5The utility model provides a technical solution: a welding device for heat exchanger processing with an auxiliary positioning structure, including two welding fixed boxes 1 and an automatic welding device for heat exchanger, two wheels 2 are fixedly installed at the bottom of the two welding fixed boxes 1, two sliders 3 are slidably connected inside the welding fixed box 1, and arc clamps 4 for auxiliary positioning are welded on the tops of the two sliders 3, threaded rods 5 are sleeved on the internal threads of the two sliders 3, and threads in opposite directions are provided at the front and rear ends of the threaded rods 5, the front end of the threaded rods 5 is rotatably connected to the inner wall of the welding fixed box 1, and the rear end of the threaded rods 5 is fixedly connected to a circular turntable 6, and the same structure is arranged inside the two welding fixed boxes 1, a mounting base 14 is welded on the front side of the right welding fixed box 1, and a hydraulic telescopic rod 15 is fixedly installed on the surface of the mounting base 14, and the hydraulic telescopic rod 15 is connected to the left welding fixed box 1; a moving protrusion 16 is welded on the front side of the left welding fixed box 1, and the output end of the hydraulic telescopic rod 15 is fixedly connected to the surface of the moving protrusion 16.

[0021] The staff puts the two cylinders on the top of the two welding fixing boxes 1 respectively, and then rotates the threaded rod 5 through the circular turntable 6. The threaded rod 5 rotates and drives the two sliders 3 to slide relative to each other. The two sliders 3 drive the two arc-shaped clamping plates 4 to slide relative to each other and clamp them on the surface of the cylinder to fix them. The hydraulic telescopic rod 15 is started, and the output end of the hydraulic telescopic rod 15 moves and drives the welding fixing box 1 on the left to move to the right through the moving protrusion 16. At this time, the two arc-shaped clamping plates 4 on the left can be used to drive the cylinder to move to the right to adjust the distance between the cylinder on the right. This method of fixing the cylinders fixes the positions of the two cylinders through four arc-shaped clamping plates, and adjusts the distance between the two cylinders through the hydraulic telescopic rod 15, which can prevent the cylinders from moving during the welding process, ensure the stability of the two cylinders during the welding process, and thus improve the welding quality between the two cylinders.

[0022] The automatic welding device of the heat exchanger includes a ring 7, a large gear 8, a welder 9, a positioning block 11, a servo motor 12 and a pinion 13. The large gear 8 is fixedly sleeved on the surface of the ring 7, the welder 9 is fixedly installed on the inner surface of the ring 7, an annular groove 10 is opened on the surface of the ring 7, the positioning block 11 is slidably connected inside the annular groove 10, the positioning block 11 is fixedly connected to the surface of the left welding fixing box 1, the servo motor 12 is fixedly installed at the bottom of the left welding fixing box 1, the pinion 13 is fixedly connected to the output end of the servo motor 12, and the pinion 13 is meshed with the large gear 8.

[0023] After the two cylinders are fixed, the staff starts the servo motor 12 and drives the small gear 13 to rotate. The small gear 13 rotates and drives the ring 7 to rotate at the welding position of the two cylinders through the meshing action with the large gear 8, and the ring 7 is positioned by the positioning block 11 to ensure the stability of the rotation of the ring 7. The ring 7 rotates around the center of the cylinder once to drive the welder 9 to rotate once to weld the two cylinders in one circle. The staff no longer needs to manually weld the cylinders, thereby reducing the labor intensity of the staff.

[0024] Working principle: The welding equipment for heat exchanger processing with auxiliary positioning structure, the staff rotates the threaded rod 5 through the circular turntable 6, the threaded rod 5 rotates and drives the two sliders 3 and the two arc clamps 4 to slide relatively and clamp on the surface of the cylinder to fix it, start the hydraulic telescopic rod 15, the output end of the hydraulic telescopic rod 15 moves and drives the welding fixing box 1 on the left to move to the right through the moving protrusion 16, at this time, the cylinder can be driven to move to the right through the two arc clamps 4 on the left to adjust the distance between the cylinder and the right cylinder, prevent the cylinder from moving during the welding process, and ensure the stability of the two cylinders during welding, the staff starts the servo motor 12 and drives the small gear 13 to rotate, the small gear 13 rotates and drives the ring 7 to rotate at the welding position of the two cylinders through the meshing action with the large gear 8, and the ring 7 is positioned by the positioning block 11, the ring 7 rotates around the center of the cylinder to drive the welder 9 to rotate one circle to weld the two cylinders one circle, and the staff no longer needs to manually weld the cylinders.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A welding device for heat exchanger processing with an auxiliary positioning structure, characterized in that: include: Two welding fixing boxes (1) and a heat exchanger automatic welding device; Two wheels (2) are fixedly mounted on the bottom of the two welding fixed boxes (1), two sliders (3) are slidably connected inside the welding fixed boxes (1), arc-shaped clamping plates (4) for auxiliary positioning are welded on the tops of the two sliders (3), a mounting base (14) is welded on the front side of the right welding fixed box (1), a hydraulic telescopic rod (15) is fixedly mounted on the surface of the mounting base (14), and the hydraulic telescopic rod (15) is connected to the left welding fixed box (1); The heat exchanger automatic welding device comprises a circular ring (7), a large gear (8), a welder (9), a positioning block (11), a servo motor (12) and a small gear (13). The large gear (8) is fixedly sleeved on the surface of the circular ring (7), the welder (9) is fixedly mounted on the inner surface of the circular ring (7), an annular groove (10) is provided on the surface of the circular ring (7), the positioning block (11) is slidably connected inside the annular groove (10), the positioning block (11) is fixedly connected to the surface of a left welding fixing box (1), and the servo motor (12) is fixedly mounted on the bottom of the left welding fixing box (1).

2. The heat exchanger processing welding equipment with auxiliary positioning structure according to claim 1 is characterized in that: The internal threads of the two sliding blocks (3) are sleeved with a threaded rod (5), and the front and rear ends of the threaded rod (5) are provided with threads in opposite directions.

3. The heat exchanger processing welding equipment with auxiliary positioning structure according to claim 2 is characterized in that: The front end of the threaded rod (5) is rotatably connected to the inner wall of the welding fixing box (1), and the rear end of the threaded rod (5) is fixedly connected to a circular turntable (6). The interiors of the two welding fixing boxes (1) are provided with the same structure.

4. The heat exchanger processing welding equipment with auxiliary positioning structure according to claim 1, characterized in that: A moving protrusion (16) is welded on the front side of the welding fixing box (1) on the left side, and the output end of the hydraulic telescopic rod (15) is fixedly connected to the surface of the moving protrusion (16).

5. The heat exchanger processing welding equipment with auxiliary positioning structure according to claim 1, characterized in that: The small gear (13) is fixedly connected to the output end of the servo motor (12), and the small gear (13) is meshingly connected to the large gear (8).

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