Welding tool for tubular heat exchanger

Abstract

The utility model belongs to the field of tubular heat exchanger machining, and particularly relates to a welding tool for a tubular heat exchanger, which comprises a machining table, a base is fixedly connected to one side of the machining table, a mounting block is fixedly connected to the top of the base, and a moving block is slidably connected to an inner cavity of the mounting block; the first servo motor drives the rotating ring block and the fixed ring block to rotate during operation, the sliding sleeve block is driven to rotate by means of rotating connection between the first limiting rod and the second limiting rod and rotating connection between the rotating ring block and the fixed ring block, and the clamping ring block can be smoothly driven to rotate and move through rotation of the sliding sleeve block; according to the heat exchange tube clamping and welding device, clamping of heat exchange tubes of different sizes is achieved, when the heat exchange tubes of different sizes need to be clamped, the clamping size can be conveniently and rapidly adjusted, then the complexity of adjusting the clamping size is reduced, and the efficiency of clamping and welding the heat exchange tubes is improved.

Description

Technical Field

[0001] This utility model relates to the field of tubular heat exchanger processing, specifically a welding fixture for tubular heat exchangers. Background Technology

[0002] A tubular heat exchanger is a common heat exchange device whose heat exchange walls are composed of tubes. The working principle of a tubular heat exchanger is based on heat transfer and fluid flow. It consists of a set of parallel tubes, with one fluid (called the working fluid) flowing inside the tube and another fluid (called the heat transfer medium) flowing outside. The manufacturing process of a tubular heat exchanger often involves multiple steps, such as cutting, forming, welding, and surface treatment, to ensure successful processing and subsequent use.

[0003] In existing technologies, when processing tubular heat exchangers, multiple heat exchange tubes are usually welded together to ensure the normal operation of the heat exchanger. During welding, the heat exchange tubes are usually clamped to ensure their stability. However, the clamps used to hold the heat exchange tubes during welding are usually of fixed size. This means that when workers need to weld heat exchange tubes of different sizes, the clamps need to be disassembled and replaced. Even if the size of the clamps is adjusted using threaded rods, the adjustment of the clamp size is still quite troublesome. This increases the cumbersomeness of clamping heat exchange tubes of different sizes and reduces the efficiency of welding heat exchange tubes. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the clamps used to hold heat exchanger tubes during welding are usually of fixed size. This makes it troublesome and cumbersome to adjust the size of the clamps when welding heat exchanger tubes of different sizes, which reduces the efficiency of welding heat exchanger tubes. This utility model proposes a welding fixture for tubular heat exchangers.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a welding fixture for a tubular heat exchanger, including a processing table, a base fixedly connected to one side of the processing table, an installation block fixedly connected to the top of the base, a movable block slidably connected to the inner cavity of the installation block, two movable blocks are provided, a connecting plate is fixedly connected to the top of the movable block, and a clamping mechanism is provided on one side of the connecting plate.

[0006] The clamping mechanism includes a fixed rod, one end of which is fixedly connected to one side of a connecting plate. A rotating plate is rotatably connected to the surface of the fixed rod, and a sliding sleeve block is slidably connected to the surface of the rotating plate. A first limiting rod and a second limiting rod are rotatably connected to the top and bottom of the sliding sleeve block, respectively. A clamping ring block is rotatably connected to the inner cavity of the rotating plate. A rotating ring block is rotatably connected to one side of the connecting plate. A connecting block is fixedly connected to one side of the rotating ring block, and a fixed ring block is fixedly connected to one side of the connecting block. The surface of the first limiting rod is rotatably connected to the inner cavity of the fixed ring block, and the surface of the second limiting rod is rotatably connected to the inner cavity of the rotating ring block. A first servo motor is fixedly connected to one side of the connecting plate, and the output end of the first servo motor passes through the connecting plate and is fixedly connected to a drive assembly.

[0007] Preferably, the drive assembly includes a drive gear, one side of which is fixedly connected to the output end of the first servo motor, and the other side of which is rotatably connected to one side of the connecting plate. A driven gear ring is fixedly connected to the surface of the rotating ring block, and the teeth of the driven gear ring mesh with the teeth of the drive gear.

[0008] Preferably, the inner cavity of the mounting block is rotatably connected to a bidirectional screw, the inner cavity of the moving block is threadedly connected to the surface of the bidirectional screw, and a second servo motor is fixedly connected to one side of the mounting block. The output end of the second servo motor passes through the mounting block and is fixedly connected to one end of the bidirectional screw.

[0009] Preferably, an electric telescopic rod is slidably connected to the top of the base, a support plate is fixedly connected to one end of the electric telescopic rod, a limit groove is opened in the inner cavity of the mounting block, a limit block is fixedly connected to one side of the moving block, and the surface of the limit block is slidably connected to the inner cavity of the limit groove.

[0010] Preferably, a reinforcing ring block is fixedly connected to one side of the connecting plate, and the inner cavity of the reinforcing ring block is fixedly connected to the surface of the fixing rod.

[0011] Preferably, a hollow groove is provided on one side of the connecting plate, and a sliding rod is fixedly connected to one side of the rotating ring block, with the surface of the sliding rod slidably connected to the inner cavity of the hollow groove.

[0012] Preferably, a baffle is fixedly connected to the inner cavity of the mounting block, the surface of the baffle is slidably connected to the inner cavity of the moving block, and a rubber sleeve is movably bonded to the surface of the clamping ring block.

[0013] The advantages of this utility model are:

[0014] This invention utilizes the operation of a first servo motor to smoothly drive the rotating ring block and the fixed ring block to rotate. Through the rotational connection between the first and second limiting rods and the rotating and fixed ring blocks, the sliding sleeve block can rotate. Simultaneously, the rotation of the sliding sleeve block smoothly drives the clamping ring block to rotate and move via a rotating plate, thereby achieving the clamping of heat exchanger tubes of different sizes. This allows for convenient and easy adjustment of the clamping dimensions when clamping heat exchanger tubes of different sizes, reducing the tediousness of adjusting the clamping dimensions and increasing the efficiency of clamping and welding heat exchanger tubes. It solves the problem that existing clamps used to hold heat exchanger tubes during welding are typically of fixed dimensions, making it cumbersome and inefficient to adjust the clamp dimensions when welding heat exchanger tubes of different sizes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the processing table and base of this utility model;

[0017] Figure 2 This is a schematic diagram of the limiting groove and bidirectional screw of this utility model;

[0018] Figure 3 This is a schematic diagram of the limiting block and the first servo motor of this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding sleeve block and the driving gear of this utility model;

[0020] Figure 5 This is a schematic diagram of the hollow groove and reinforcing ring block of this utility model;

[0021] Figure 6 This is a schematic diagram of the slide bar and rotating ring block of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the first limiting rod and the second limiting rod of this utility model.

[0023] In the diagram: 1. Processing table; 2. Base; 3. Mounting block; 4. Moving block; 5. Connecting plate; 6. Clamping mechanism; 601. Fixed rod; 602. Rotating plate; 603. Sliding sleeve block; 604. First limiting rod; 605. Second limiting rod; 606. Clamping ring block; 607. Rotating ring block; 608. Connecting block; 609. Fixed ring block; 610. Drive assembly; 6101. Drive gear; 6102. Driven gear ring; 611. First servo motor; 7. Bidirectional screw; 8. Second servo motor; 9. Limiting groove; 10. Limiting block; 11. Baffle; 12. Electric telescopic rod; 13. Support plate; 14. Rubber sleeve; 15. Reinforcing ring block; 16. Hollow groove; 17. Slide rod. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0026] This application discloses a welding fixture for a tubular heat exchanger. (Refer to...) Figure 1 and Figure 4 A welding fixture for a tubular heat exchanger includes a processing table 1, a base 2 fixedly connected to one side of the processing table 1, an mounting block 3 fixedly connected to the top of the base 2, a movable block 4 slidably connected to the inner cavity of the mounting block 3, two movable blocks 4 are provided, a connecting plate 5 is fixedly connected to the top of the movable block 4, and a clamping mechanism 6 is provided on one side of the connecting plate 5.

[0027] The clamping mechanism 6 includes a fixed rod 601, one end of which is fixedly connected to one side of the connecting plate 5. A rotating plate 602 is rotatably connected to the surface of the fixed rod 601. A sliding sleeve block 603 is slidably connected to the surface of the rotating plate 602. A first limiting rod 604 and a second limiting rod 605 are rotatably connected to the top and bottom of the sliding sleeve block 603, respectively. A clamping ring block 606 is rotatably connected to the inner cavity of the rotating plate 602. A rotating ring block 607 is rotatably connected to one side of the connecting plate 5. A connecting block 608 is fixedly connected to one side of the rotating ring block 607. A fixed ring block 609 is fixedly connected to one side of the connecting block 608. The surface of the first limiting rod 604 is rotatably connected to the inner cavity of the fixed ring block 609. The surface of the second limiting rod 605 is rotatably connected to the inner cavity of the rotating ring block 607. A first servo motor 611 is fixedly connected to one side of the connecting plate 5. The output end of the first servo motor 611 passes through the connecting plate 5 and is fixedly connected to a drive assembly 610.

[0028] The processing table 1 can be connected to the mounting block 3 via the base 2. The movable block 4 connected inside the mounting block 3 can be connected to the clamping mechanism 6 via the connecting plate 5. The movable block 4 can move inside the mounting block 3, allowing the positions of the connecting plate 5 and the clamping mechanism 6 to be adjusted as needed. The fixed rod 601 can be connected to the rotating plate 602. The clamping ring block 606 connected inside the rotating plate 602 can clamp and limit the heat exchange tube. The rotating plate 602 can be connected to the first limiting rod 604 and the second limiting rod 605 via the sliding sleeve block 603. The rotating ring block 607 can be connected to the fixed ring block 609 via the connecting block 608. When the rotating ring block 607 rotates... The connecting block 608 can drive the fixed ring block 609 to rotate together. The rotational connection between the first limiting rod 604 and the fixed ring block 609, and the rotational connection between the second limiting rod 605 and the rotating ring block 607, allow the rotating ring block 607 and the connecting block 608 to smoothly drive the sliding sleeve block 603 to move through the first limiting rod 604 and the second limiting rod 605 when they rotate. While the sliding sleeve block 603 is moving, it can drive the rotating plate 602 to rotate. Since the rotating plate 602 is rotatably connected to the surface of the fixed rod 601, the rotating plate 602 can smoothly drive the clamping ring block 606 to rotate and move, thereby realizing the clamping and fixing of heat exchange tubes of different sizes.

[0029] Reference Figure 5 and Figure 6The drive assembly 610 includes a drive gear 6101. One side of the drive gear 6101 is fixedly connected to the output end of the first servo motor 611, and the other side of the drive gear 6101 is rotatably connected to one side of the connecting plate 5. A driven gear ring 6102 is fixedly connected to the surface of the rotating ring block 607. The teeth of the driven gear ring 6102 mesh with the teeth of the drive gear 6101. When the first servo motor 611 is operating, it can smoothly drive the drive gear 6101 to rotate. Because of the meshing between the drive gear 6101 and the driven gear ring 6102, the first servo motor 611 can smoothly drive the rotating ring block 607 to rotate through the driven gear ring 6102 when it is operating, thereby realizing the rotation and movement of the clamping ring block 606.

[0030] Reference Figure 1 and Figure 3 The inner cavity of the mounting block 3 is rotatably connected to a bidirectional screw 7. The inner cavity of the moving block 4 is threadedly connected to the surface of the bidirectional screw 7. A second servo motor 8 is fixedly connected to one side of the mounting block 3. The output end of the second servo motor 8 passes through the mounting block 3 and is fixedly connected to one end of the bidirectional screw 7. Both moving blocks 4 are threadedly connected to the surface of the bidirectional screw 7, and the threads on both sides of the bidirectional screw 7 are opposite. This allows the second servo motor 8 to smoothly drive the bidirectional screw 7 to rotate when it is operating. By utilizing the threaded connection between the moving block 4 and the bidirectional screw 7, as well as the sliding connection between the moving block 4 and the interior of the mounting block 3, the moving block 4 can be moved. This allows the moving block 4 and the clamping mechanism 6 to move horizontally when needed, thereby achieving the clamping and limiting of heat exchange tubes of different lengths.

[0031] Reference Figure 1 and Figure 2 An electric telescopic rod 12 is slidably connected to the top of the base 2. A support plate 13 is fixedly connected to one end of the electric telescopic rod 12. A limit groove 9 is opened in the inner cavity of the mounting block 3. A limit block 10 is fixedly connected to one side of the moving block 4. The surface of the limit block 10 is slidably connected to the inner cavity of the limit groove 9. The electric telescopic rod 12 can drive the support plate 13 to rise and fall through its own operation. The support plate 13 can provide a certain support for the heat exchanger tube placed inside the connecting plate 5 and not clamped. This makes it less likely that the heat exchanger tube will not be able to be clamped smoothly when the operator needs to clamp it because it is in a horizontal tilted state. The limit groove 9 can limit the movement of the moving block 4 through the limit block 10, so that the movement of the moving block 4 can be stable enough and it is not easy for it to rotate or deviate significantly during the movement.

[0032] Reference Figure 4 and Figure 5A reinforcing ring block 15 is fixedly connected to one side of the connecting plate 5. The inner cavity of the reinforcing ring block 15 is fixedly connected to the surface of the fixing rod 601. The reinforcing ring block 15 can reinforce the connection and use of the fixing rod 601 through its fixed connection with the connecting plate 5, so that the fixing rod 601 can be stable enough when it drives the rotating plate 602 to rotate and move, and is not prone to shaking or breaking.

[0033] Reference Figure 5 and Figure 6 A hollow groove 16 is provided on one side of the connecting plate 5, and a slide rod 17 is fixedly connected to one side of the rotating ring block 607. The surface of the slide rod 17 is slidably connected to the inner cavity of the hollow groove 16. The hollow groove 16 can play an important auxiliary and limiting role for the rotating ring block 607 through the slide rod 17, so that the rotating ring block 607 is not easy to fall or shake when it rotates, which greatly increases the stability of the rotating plate 602 and the clamping ring block 606 during use.

[0034] Reference Figure 2 and Figure 5 A baffle 11 is fixedly connected to the inner cavity of the mounting block 3. The surface of the baffle 11 is slidably connected to the inner cavity of the moving block 4. A rubber sleeve 14 is movably bonded to the surface of the clamping ring block 606. The baffle 11 can not only further limit the movement of the moving block 4, but also shield the debris generated during the welding of the heat exchanger tube, so that the debris is not easy to fall into the interior of the mounting block 3 in large quantities and affect the use of the bidirectional screw 7. The rubber sleeve 14 can reduce the wear of the heat exchanger tube surface when the clamping ring block 606 clamps the heat exchanger tube, and at the same time increase the friction of the clamping ring block 606 when clamping the heat exchanger tube, thus increasing the stability during clamping.

[0035] Working Principle: During use, the operator can adjust the positions of the moving block 4 and the clamping mechanism 6 according to the required length of the heat exchanger tube to be welded. During adjustment, the second servo motor 8 can be activated. The second servo motor 8 drives the bidirectional screw 7 to rotate, and the threaded connection between the moving block 4 and the bidirectional screw 7 causes the moving block 4 to move. Since the threads on both sides of the bidirectional screw 7 are opposite, the two moving blocks 4 can move in opposite directions. After the two moving blocks 4 have moved to the appropriate position, the heat exchanger tube to be welded can be placed inside the connecting plate 5. Then, the electric telescopic rod 12 is activated, causing the support plate 13 to rise, providing support for the heat exchanger tube and keeping it relatively horizontal. After adjusting the horizontal angle of the heat exchanger tube, the operator can activate the first servo motor 611. Through the operation of the first servo motor 611 and the meshing between the driving gear 6101 and the driven gear ring 6102... The engagement of the rotating ring 607 and the fixed ring block 609 causes the driven gear ring 6102 and the rotating ring block 607 to rotate. Since the connecting block 608 is fixed to both the rotating ring block 607 and the clamping ring block 606, the rotation of the rotating ring block 607 also causes the fixed ring block 609 to rotate. This rotational connection between the rotating ring block 607 and the fixed ring block 609 smoothly drives the sliding sleeve block 603 to rotate between the rotating ring block 607 and the fixed ring block 609 via the first limiting rod 604 and the second limiting rod 605. When in motion, the rotating plate 602 can be driven to rotate and move around the center of the fixed rod 601 through the sliding connection between itself and the rotating plate 602. This allows the rotating plate 602 to drive the clamping ring block 606 to rotate and move, thereby adjusting the position of the clamping ring block 606 to clamp and fix heat exchange tubes of different sizes. Afterwards, the support plate 13 can be moved down and reset by the reverse operation of the electric telescopic rod 12. After that, only the heat exchange tubes that need to be welded need to be welded.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A welding fixture for a tube heat exchanger, characterized by: Including processing platform (1), one side of the processing platform (1) is fixedly connected with base (2), the top of base (2) is fixedly connected with mounting block (3), the inner cavity of mounting block (3) is slidably connected with moving block (4), moving block (4) is provided with two, the top of moving block (4) is fixedly connected with connecting plate (5), one side of connecting plate (5) is provided with clamping mechanism (6); The clamping mechanism (6) includes a fixed rod (601), one end of the fixed rod (601) is fixedly connected with one side of the connecting plate (5), and the surface of the fixed rod (601) is rotatably connected with a rotating plate (602). The surface of the rotating plate (602) is slidably connected with a sliding sleeve block (603), and the top and bottom of the sliding sleeve block (603) are rotatably connected with a first limiting rod (604) and a second limiting rod (605) respectively. The inner cavity of the rotating plate (602) is rotatably connected with a clamping ring block (606), one side of the connecting plate (5) is rotatably connected with a rotating ring block (607), one side of the rotating ring block (607) is fixedly connected with a connecting block (608), one side of the connecting block (608) is fixedly connected with a fixed ring block (609), the surface of the first limiting rod (604) is rotatably connected with the inner cavity of the fixed ring block (609), and the surface of the second limiting rod (605) is rotatably connected with the inner cavity of the rotating ring block (607). One side of the connecting plate (5) is fixedly connected with a first servo motor (611), and the output end of the first servo motor (611) penetrates through the connecting plate (5) and is fixedly connected with a driving assembly (610).

2. A welding fixture for a tube heat exchanger as claimed in claim 1, wherein: The driving assembly (610) includes a driving gear (6101), one side of the driving gear (6101) is fixedly connected with the output end of the first servo motor (611), one side of the driving gear (6101) is rotatably connected with one side of the connecting plate (5), and the surface of the rotating ring block (607) is fixedly connected with a driven gear ring (6102). The teeth of the driven gear ring (6102) are meshed with the teeth of the driving gear (6101).

3. A tube heat exchanger welding fixture as claimed in claim 2, wherein: The inner cavity of the mounting block (3) is rotatably connected with a bidirectional screw rod (7), the inner cavity of the moving block (4) is threadedly connected with the surface of the bidirectional screw rod (7), one side of the mounting block (3) is fixedly connected with a second servo motor (8), and the output end of the second servo motor (8) penetrates through the mounting block (3) and is fixedly connected with one end of the bidirectional screw rod (7).

4. A tube heat exchanger welding fixture as claimed in claim 3, wherein: The top of the base (2) is slidably connected with an electric telescopic rod (12), one end of the electric telescopic rod (12) is fixedly connected with a supporting plate (13), the inner cavity of the mounting block (3) is provided with a limiting groove (9), one side of the moving block (4) is fixedly connected with a limiting block (10), and the surface of the limiting block (10) is slidably connected with the inner cavity of the limiting groove (9).

5. A tube heat exchanger welding fixture as claimed in claim 4, wherein: One side of the connecting plate (5) is fixedly connected with a reinforcing ring block (15), and the inner cavity of the reinforcing ring block (15) is fixedly connected with the surface of the fixed rod (601).

6. A tube heat exchanger welding fixture as claimed in claim 3, wherein: One side of the connecting plate (5) is provided with a hollow groove (16), one side of the rotating ring block (607) is fixedly connected with a sliding rod (17), the surface of the sliding rod (17) is in sliding connection with the inner cavity of the hollow groove (16).

7. A tube heat exchanger welding fixture as claimed in claim 4, wherein: The inner cavity of the mounting block (3) is fixedly connected with a baffle (11), the surface of the baffle (11) is in sliding connection with the inner cavity of the moving block (4), and the surface of the clamping ring block (606) is movably bonded with a rubber sleeve (14).

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