Head fin welding device

Abstract

This invention provides a welding device for end cap fins, belonging to the field of mechanical technology. It solves the problem of low welding efficiency in existing end cap and fin welding methods. This end cap and fin welding device includes a mounting frame and a rotating mechanism. The mounting frame has a slide rail. The welding device also includes a sliding frame, a first elastic element, and a second elastic element. A welding torch is mounted on the sliding frame. The sliding frame is located within the mounting frame and can slide along the slide rail. A rotating plate is hinged to the bottom of the sliding frame, and a limiting block is hinged to the front end of the rotating plate. The bottom of the limiting block has a limiting groove for the fins to pass through. The two ends of the first elastic element act on the sliding frame and the limiting block respectively, ensuring that the limiting block always tends to press against the end cap. The two ends of the second elastic element act on the mounting frame and the sliding frame respectively, ensuring that the sliding frame always tends to move along the slide rail towards the center of the end cap. This end cap and fin welding device has the advantage of improving the welding efficiency of fins and end caps.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology and relates to a welding device for end cap fins. Background Technology

[0002] Dryers and reactors are all equipped with shells. Heat exchange jackets are usually installed on the outer walls of the shells. By introducing or discharging cooling agents into the heat exchange jackets, the materials inside the reactors are heated or cooled to achieve specific chemical reactions. This also prevents materials from sticking and depositing, and makes them easy to clean and maintain.

[0003] Existing equipment such as dryers and reactors, for example, Chinese patent literature discloses a finned heat exchanger [application number: 202222626092.7; authorization announcement number: CN218673238U], which includes an inner cylinder and a lower end cap. The lower end cap is fixedly connected to the lower end of the inner cylinder. A jacket is provided on the outer side of the inner cylinder and / or the lower end cap. The upper part of the jacket is provided with an upper inlet and outlet for hot and cold media, and the lower part is provided with a lower inlet and outlet for hot and cold media. Spiral fins are wound on the outer surface of the inner cylinder and / or the lower end cap, and the fins are welded and fixed to the corresponding inner cylinder or lower end cap.

[0004] This type of heat exchanger has spiral fins wound around the outer surface of the inner cylinder and / or lower head. The fins increase the heat exchange area, thereby improving the heat exchange efficiency of equipment such as dryers and reactors. However, in this type of heat exchanger, the fins are welded to the inner cylinder and / or lower head, and welding is done manually by operators. The operator needs to pull the fins with one hand and press them against the head, while holding the welding torch with the other hand to weld. This is time-consuming, labor-intensive, and inefficient. Furthermore, the spacing between adjacent rings of fins is difficult to control during welding, and the distance between the fins and the inner cylinder and lower head cannot be precisely controlled, resulting in poor weld quality and affecting the heat exchange efficiency of the equipment. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a head and fin welding device, which solves the technical problem of how to improve the welding efficiency of fins and heads.

[0006] The objective of this invention can be achieved through the following technical solution: a head fin welding device, comprising a mounting frame and a rotating mechanism for positioning and rotating the head, characterized in that the mounting frame has a slide rail adapted to the shape of the head, the welding device further comprising a sliding frame, a first elastic element and a second elastic element, a welding torch being mounted on the sliding frame, the sliding frame being located in the mounting frame and being able to slide along the slide rail, a rotating plate being hinged to the bottom of the sliding frame, a limiting block being hinged to the front end of the rotating plate, the limiting block having a limiting groove at its bottom for the fins to pass through, the two ends of the first elastic element acting on the sliding frame and the limiting block respectively, the first elastic element causing the limiting block to always have a tendency to press against the head, the two ends of the second elastic element acting on the mounting frame and the sliding frame respectively, the second elastic element causing the sliding frame to always have a tendency to move along the slide rail toward the center of the head.

[0007] The end cap is positioned on the rotating mechanism. A ring-shaped positioning ring is placed at the center of the top of the end cap to position and weld the first ring of fins. During welding, the fins pass through the limiting groove. The first elastic element presses the bottom of the fins against the end cap through the limiting block. The limiting block is hinged to the front end of the rotating plate, and the rotating plate is hinged to the bottom of the sliding frame, ensuring that the fins are pressed into place. The second elastic element moves the sliding frame along the slide towards the center of the end cap. The second elastic element provides elastic force so that the front end face of the limiting block abuts against the positioning ring. The rotating mechanism rotates the end cap, and the welding torch welds the fins and the end cap. The limiting block abuts against the positioning ring, which is a hard contact. This overcomes the elastic force of the second elastic element, allowing the sliding frame to move away from the end cap along the slide, so that the fins are welded and fixed to the end cap in a spiral shape. After one ring of fins is welded, the limiting block abuts against the first ring of fins, again overcoming the elastic force of the second elastic element, so that the sliding frame moves away from the end cap along the slide, so that the fins are welded and fixed to the end cap in a spiral shape, ring by ring. This welding device uses a first elastic element, in conjunction with a limiting block and a rotating plate, to press the fins firmly onto the end cap. A second elastic element, also in conjunction with the limiting block and a rotating mechanism, allows the fins to move downwards in a spiral shape. A welding torch then welds and fixes the fins to the end cap, enabling automatic welding of the fins and end cap, improving welding efficiency, and ensuring the spacing between adjacent rings of fins to guarantee welding quality. The rotating mechanism only needs to drive the end cap to rotate; this is existing technology, and its specific structure will not be elaborated upon.

[0008] In the aforementioned end cap fin welding device, both ends of the front groove wall away from the rotating plate of the limiting groove have a first guide surface inclined outwards. The first guide surface makes both ends of the limiting groove flared. The first guide surface serves as a guide, adapting to the spiral welding of the fins onto the end cap, allowing the fins to better extend into and exit the limiting groove, preventing the fins and limiting block from getting stuck, enabling automated welding of the fins and end cap, while ensuring the positioning effect of the limiting groove on the fins, ensuring the same spacing between adjacent rings of fins, and guaranteeing welding quality.

[0009] In the aforementioned head fin welding device, the limiting block has inclined second guide surfaces on both sides of its front end face away from the rotating plate. These second guide surfaces are inclined inwards towards the end corresponding to the limiting groove. The second guide surfaces act as guides, adapting to the spiral welding of the fins onto the head, allowing the limiting block to move spirally downwards along the fins. This prevents the limiting block and fins from getting stuck, enabling automated welding of the fins and head and improving welding efficiency.

[0010] In the aforementioned end cap fin welding device, the bottom of the rear end of the limiting block is hinged to the front end of the rotating plate. The front end of the rotating plate is tilted upwards, and the front end of the rotating plate has a first clearance space for the welding torch to weld. The rear end of the limiting block has a second clearance space for the welding torch to weld. The first clearance space, the second clearance space, and the limiting groove are all connected. By making reasonable use of space, the welding head of the welding torch can extend into the device and be positioned at a predetermined welding location, allowing the welding torch to weld the fins and end caps, enabling automatic welding of the fins and end caps. The upward tilt of the front end of the rotating plate ensures that the limiting block does not contact the end cap, allowing the limiting block to provide a movable positioning function for the fins, preventing the fins from getting stuck, ensuring proper welding of the fins, and improving welding accuracy.

[0011] In the aforementioned head fin welding device, a pair of guide wheels are rotatably connected to the bottom of the front end of the rotating plate, and both guide wheels are partially located in the limiting groove. The guide wheels cooperate with the first guide surface to position the fins and reduce the contact friction between the fins and the limiting block, thereby reducing friction and allowing the fins to move smoothly.

[0012] In the aforementioned end cap fin welding device, the rear end of the rotating plate is hinged to the sliding frame. A third elastic element is provided between the sliding frame and the rotating plate. The two ends of the third elastic element act on the sliding frame and the rotating plate respectively, causing the rotating plate to always have a downward rotation tendency around the sliding frame. The third elastic element works in conjunction with the first elastic element to subject the rotating plate and the limiting block to sufficient downward force, allowing the fins to be pressed tightly onto the end cap. This ensures that the limiting block has sufficient force to cause the fins to rotate downward in a spiral shape, enabling automatic welding of the fins and the end cap. In actual production, the third elastic element can also be an elastic sheet or a conical spring.

[0013] In the aforementioned head fin welding device, the mounting frame includes a pair of mounting plates with a sliding space between them. A slide rail is located within the mounting plates. The sliding frame includes several rollers on both sides and is situated within the sliding space. The outer sides of the sliding frame are clearance-fitted with the inner walls of the mounting plates, and the rollers are embedded in the slide rail. This structure allows for smooth movement of the sliding frame, ensuring the fins can move downwards in a spiral motion, enabling automatic welding of the fins and the head.

[0014] In the aforementioned head fin welding device, the slide is either a quarter ellipse or a quarter arc. It is used with heads that are semi-elliptical or hemispherical.

[0015] In the aforementioned end cap fin welding device, the first elastic element is a cylindrical spring. A positioning rod is fixedly connected to the sliding frame, and the cylindrical spring is sleeved on the positioning rod. The top of the cylindrical spring acts on the sliding frame, and the bottom of the cylindrical spring is located below the positioning rod and acts on the top of the limiting block. The positioning rod serves to position the first elastic element and prevent it from deviating from its set position. The bottom of the cylindrical spring is located below the positioning rod, ensuring that the first elastic element has sufficient elastic force applied to the limiting block. In actual production, the first elastic element can also be an elastic sheet or a conical spring.

[0016] In the aforementioned end cap fin welding device, the second elastic element is a pair of tension springs. The mounting bracket has first mounting posts on both outer sides, and the sliding bracket has second mounting posts on both outer sides. The two ends of the tension springs are respectively connected to the first and second mounting posts located on the same side. The tension springs provide continuous elastic force and, being located on both sides, do not affect the movement of the sliding bracket. In actual production, the second elastic element can also be a cylindrical spring, which pushes the sliding bracket, ensuring that the sliding bracket always tends to move towards the center of the end cap.

[0017] In the aforementioned head fin welding device, the welding device further includes an adjustment mechanism for adjusting the XYZ axis position of the mounting bracket, the adjustment mechanism being located next to the rotating mechanism. The adjustment mechanism only needs to be able to drive the mounting bracket to adjust its position along the XYZ axis; this is existing technology, and its specific structure will not be elaborated upon.

[0018] Compared with the prior art, the head fin welding device provided by the present invention has the following advantages:

[0019] 1. This welding device uses the cooperation of a first elastic element, a third elastic element, a limiting block, and a rotating plate to press the fins onto the end cap. The rotating mechanism drives the end cap to rotate. The limiting block overcomes the elastic force of the second elastic element by contacting the previous ring of fins, causing the sliding frame to move away from the center of the end cap along the slide rail. This allows the fins to move downwards in a spiral shape and be welded and positioned on the end cap, achieving automated welding of the fins and the end cap, improving welding efficiency, and ensuring the spacing between adjacent rings of fins to guarantee welding efficiency.

[0020] 2. This welding device, through the cooperation of the first elastic element, the second elastic element and the limiting block, can make the fins move downward in a spiral shape without the need for an additional power mechanism, which is ingenious. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the head fin welding device.

[0022] Figure 2 This is a partial structural schematic diagram of the welding device for the end cap fins.

[0023] Figure 3 This is a schematic diagram of the structure of the sliding frame, rotating plate, and limiting block of the welding device for the end cap fins.

[0024] Figure 4 This is an exploded view of the structure of the sliding frame, rotating plate, and limiting block of the welding device for the end cap fins.

[0025] Figure 5 This is a schematic diagram of the overall bottom structure of the rotating plate and limiting block of the head fin welding device.

[0026] In the diagram, 1. Mounting bracket; 101. Slide rail; 102. Mounting plate; 103. Sliding space; 2. End cap; 3. Rotating mechanism; 4. Sliding frame; 41. Roller; 5. First elastic element; 6. Second elastic element; 7. Welding torch; 8. Rotating plate; 81. First clearance space; 9. Limiting block; 91. Second guide surface; 92. Second clearance space; 10. Fin; 11. Limiting groove; 111. First guide surface; 12. Guide wheel; 13. Third elastic element; 14. Positioning rod; 15. First hanging post; 16. Second hanging post; 17. Adjustment mechanism. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] like Figure 1 As shown, the welding device for the end cap 2 fins 10 includes a mounting frame 1, a rotating mechanism 3, a sliding frame 4, a first elastic element 5, a second elastic element 6, a welding torch 7, a rotating plate 8, a limiting block 9, a third elastic element 13, and an adjusting mechanism 17. The rotating mechanism 3 is used to position the end cap 2 and drive the end cap 2 to rotate. The adjusting mechanism 17 is used to adjust the XYZ axis position of the mounting frame 1. The adjusting mechanism 17 is located next to the rotating mechanism 3. Both the rotating mechanism 3 and the adjusting mechanism 17 are existing technologies, and their specific structures will not be described in detail.

[0029] like Figure 2 As shown, the mounting frame 1 includes a pair of mounting plates 102, with a sliding space 103 between them. Each mounting plate 102 has a slide rail 101, and the shapes of the mounting plates 102 and the slide rails 101 are adapted to the shape of the end cap 2. In this embodiment, the slide rail 101 is 1 / 4 elliptical, and two rollers 41 are provided on both sides of the sliding frame 4. The rollers 41 are bearings. In actual production, the slide rail 101 is 1 / 4 arc-shaped, and three or four rollers 41 can be provided on both sides of the sliding frame 4. The sliding frame 4 is located in the sliding space 103, and the two outer sides of the sliding frame 4 are clearance-fitted with the inner sidewalls of the mounting plates 102. The rollers 41 are embedded in the slide rails 101.

[0030] The mounting frame 1 is provided with first hanging posts 15 on both outer sides, and the sliding frame 4 is provided with second hanging posts 16 on both outer sides. The second elastic element 6 is a pair of tension springs. The two ends of the tension springs are connected to the first hanging posts 15 and the second hanging posts 16 located on the same side, respectively. That is, the two ends of the second elastic element 6 act on the mounting frame 1 and the sliding frame 4, respectively. The second elastic element 6 makes the sliding frame 4 always have the tendency to move along the slide 101 toward the center of the end cap 2.

[0031] like Figure 3 , Figure 4 , Figure 5As shown, a welding torch 7 is mounted on the sliding frame 4. The rear end of the rotating plate 8 is hinged to the bottom of the sliding frame 4, and the front end of the rotating plate 8 is hinged to the rear end of the limiting block 9. The first elastic element 5 is a cylindrical spring. A positioning rod 14 is fixedly connected in the sliding frame 4. The cylindrical spring is sleeved on the positioning rod 14. The top of the cylindrical spring acts on the sliding frame 4, and the bottom of the cylindrical spring is located below the positioning rod 14 and acts on the top of the limiting block 9. The first elastic element 5 makes the limiting block 9 always tend to press against the end cap 2. A pair of third elastic elements 13 are provided between the sliding frame 4 and the rotating plate 8. The third elastic elements 13 are cylindrical springs. The two ends of the third elastic elements 13 act on the sliding frame 4 and the rotating plate 8 respectively. The third elastic elements 13 make the rotating plate 8 always tend to rotate downward around the sliding frame 4.

[0032] The bottom of the limiting block 9 has a limiting groove 11 through which the fin 10 passes. Both ends of the front groove wall of the limiting groove 11 away from the rotating plate 8 have first guide surfaces 111 that are inclined outwards, making both ends of the limiting groove 11 flared. Both sides of the front end face of the limiting block 9 away from the rotating plate 8 have second guide surfaces 91 that are inclined inwards toward the corresponding ends of the limiting groove 11.

[0033] The front end of the rotating plate 8 has a first clearance space 81 for welding by the welding gun 7, and the rear end of the limiting block 9 has a second clearance space 92 for welding by the welding gun 7. The first clearance space 81, the second clearance space 92, and the limiting groove 11 are all connected. The front end of the rotating plate 8 is tilted upward, and a pair of guide wheels 12 are rotatably connected to the bottom of the front end of the rotating plate 8. Both guide wheels 12 are partially located in the limiting groove 11.

[0034] During operation, the end cap 2 is positioned on the rotating mechanism 3. A ring-shaped positioning ring for positioning and welding the first ring of fins 10 is placed at the center of the top of the end cap 2. The fins 10 pass through the limiting groove 11. Under the action of the first elastic element 5, the second elastic element 6 and the third elastic element 13, the front end face of the limiting block 9 abuts against the positioning ring, and the fins 10 are pressed tightly onto the end cap 2. The rotating mechanism 3 rotates, causing the end cap 2 to rotate. The welding torch 7 begins welding, welding the fins 10 to the end cap 2. Subsequently, with the cooperation of the limiting block 9 and the second elastic element 6, the fins 10 pass through the limiting groove 11 and move downward in a spiral shape. The welding torch 7 continuously welds and fixes the fins 10 onto the end cap 2. During this process, the limiting block 9 abuts against the upper ring of fins 10, overcoming the elastic force of the second elastic element 6, causing the sliding frame 4, welding torch 7, rotating plate 8, and limiting block 9 to continuously move downward along the slide 101. The second elastic element 6 provides elastic tension, causing the limiting block 9 to abut against the upper ring of fins 10. The rotating mechanism 3 rotates, and the welding torch 7 welds, so that the fins 10 are welded and fixed onto the end cap 2 in a spiral shape.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as mounting bracket 1, slide rail 101, mounting plate 102, sliding space 103, end cap 2, rotating mechanism 3, sliding frame 4, roller 41, first elastic element 5, second elastic element 6, welding torch 7, rotating plate 8, first clearance space 81, limiting block 9, second guide surface 91, second clearance space 92, fin 10, limiting groove 11, first guide surface 111, guide wheel 12, third elastic element 13, positioning rod 14, first hanging post 15, second hanging post 16, and adjusting mechanism 17, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A head fin welding device, comprising a mounting frame (1) and a rotating mechanism (3) for positioning the head (2) and driving the head (2) to rotate, characterized in that, The mounting bracket (1) has a slide rail (101) adapted to the shape of the end cap (2). The welding device also includes a sliding frame (4), a first elastic element (5), and a second elastic element (6). A welding torch (7) is provided on the sliding frame (4). The sliding frame (4) is located in the mounting bracket (1) and can slide along the slide rail (101). A rotating plate (8) is hinged to the bottom of the sliding frame (4). A limiting block (9) is hinged to the front end of the rotating plate (8). The bottom of the limiting block (9) is... The device has a limiting groove (11) through which the fins (10) pass. The two ends of the first elastic member (5) act on the sliding frame (4) and the limiting block (9) respectively. The first elastic member (5) makes the limiting block (9) always tend to press against the end cap (2). The two ends of the second elastic member (6) act on the mounting frame (1) and the sliding frame (4) respectively. The second elastic member (6) makes the sliding frame (4) always tend to move along the slide (101) toward the center of the end cap (2).

2. The head fin welding device according to claim 1, characterized in that, The limiting groove (11) has a first guide surface (111) at both ends of the front groove wall away from the rotating plate (8), which is inclined outward. The first guide surface (111) makes both ends of the limiting groove (11) flared.

3. The head fin welding device according to claim 1, characterized in that, The limiting block (9) has a second guide surface (91) on both sides of the front end face away from the rotating plate (8), which is inclined. The second guide surface (91) is inclined inward toward the end of the limiting groove (11).

4. The head fin welding device according to claim 1, 2, or 3, characterized in that, The bottom of the rear end of the limiting block (9) is hinged to the front end of the rotating plate (8). The front end of the rotating plate (8) is tilted upward. The front end of the rotating plate (8) has a first clearance space (81) for welding by the welding gun (7). The rear end of the limiting block (9) has a second clearance space (92) for welding by the welding gun (7). The first clearance space (81), the second clearance space (92) and the limiting groove (11) are all connected.

5. The head fin welding device according to claim 1, 2, or 3, characterized in that, A pair of guide wheels (12) are rotatably connected to the bottom of the front end of the rotating plate (8), and both guide wheels (12) are partially located in the limiting groove (11).

6. The head fin welding device according to claim 1, 2, or 3, characterized in that, The rear end of the rotating plate (8) is hinged to the sliding frame (4). A third elastic element (13) is provided between the sliding frame (4) and the rotating plate (8). The two ends of the third elastic element (13) act on the sliding frame (4) and the rotating plate (8) respectively. The third elastic element (13) makes the rotating plate (8) always have a tendency to rotate downward around the sliding frame (4).

7. The head fin welding device according to claim 1, 2, or 3, characterized in that, The mounting bracket (1) includes a pair of mounting plates (102), with a sliding space (103) between the pair of mounting plates (102). The slide rail (101) is located in the mounting plate (102). The sliding frame (4) includes a plurality of rollers (41) located on both sides. The sliding frame (4) is located in the sliding space (103). The two outer sides of the sliding frame (4) are clearance-fitted with the inner sidewall of the mounting plate (102). The rollers (41) are embedded in the slide rail (101).

8. The head fin welding apparatus according to claim 1, 2, or 3, characterized in that, The slide (101) is 1 / 4 elliptical or 1 / 4 arc-shaped.

9. The head fin welding device according to claim 1, 2, or 3, characterized in that, The first elastic element (5) is a cylindrical spring. A positioning rod (14) is fixedly connected in the sliding frame (4). The cylindrical spring is sleeved on the positioning rod (14). The top of the cylindrical spring acts on the sliding frame (4), and the bottom of the cylindrical spring is located below the positioning rod (14) and acts on the top of the limiting block (9).

10. The head fin welding apparatus according to claim 1, 2, or 3, characterized in that, The second elastic element (6) is a pair of tension springs. The two outer sides of the mounting bracket (1) are provided with first hanging posts (15), and the two outer sides of the sliding bracket (4) are provided with second hanging posts (16). The two ends of the tension spring are respectively connected to the first hanging post (15) and the second hanging post (16) located on the same side.

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