Welding tool for heat exchanger shell

Abstract

The utility model discloses a heat exchanger shell welding tool, which relates to the technical field of heat exchanger processing, and comprises a base, a fixed plate is fixedly arranged on the right side of the upper end of the base, an adjusting mechanism is arranged at the end part of the left end of the base, sliding rails are symmetrically and fixedly arranged on the left side of the upper end of the base, and a movable plate is slidably mounted on the sliding rails; and fixing mechanisms are arranged on the opposite surfaces of the top ends of the movable plate and the fixed plate. The two ends of the shell are located between the chucks on the two sides, then the first bevel wheel can be driven by the rotating two-way lead screw to rotate, meanwhile, under the meshing fit of the first bevel wheel and the two second bevel wheels, the two-way lead screw drives the two one-way lead screws on the two sides to rotate at the same time, and then the corresponding threaded seats can be driven to be close to each other; the threaded seat drives the clamping plates to get close synchronously, the four sets of clamping plates can make contact with the outer walls of the two ends of the shell, then the shell can be clamped, fixing of the shell is completed, and welding of the shell is facilitated.

Description

Technical Field

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

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters of the process to meet the requirements of the process conditions. It is also one of the main devices for improving energy efficiency. The heat exchanger industry involves nearly 30 industries, including HVAC, pressure vessels, wastewater treatment equipment, chemicals, and petroleum, forming an industrial chain.

[0003] However, the heat exchanger shell needs to be welded before use, and therefore welding fixtures are required for its use.

[0004] The existing technology has the following problems:

[0005] In actual use, the existing equipment is used to weld shells of various sizes, resulting in different ring diameters and lengths. However, the existing tooling cannot quickly adjust its position according to the shell's dimensions, thus affecting the efficiency of shell welding. Utility Model Content

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A welding fixture for a heat exchanger shell includes a base, a fixed plate fixedly provided on the upper right side of the base, an adjustment mechanism provided on the left end of the base, slide rails symmetrically fixedly provided on both the upper left side of the base, a movable plate slidably mounted on the slide rails, a fixing mechanism provided on the top opposite surfaces of the movable plate and the fixed plate, and a motor fixedly mounted on the outer side of the top of the movable plate and the fixed plate.

[0008] The adjustment mechanism includes a side plate, the bottom end of which is fixedly connected to both sides of the lower end of the movable plate. A second motor is fixedly mounted on the top of the side plate. A transmission rod is driven to the output end of the second motor. A gear is fixedly connected to the lower end of the transmission rod. A toothed plate is fixedly mounted on the left side of the base.

[0009] Preferably, the gear meshes with the toothed plate.

[0010] Preferably, the fixing mechanism includes a chuck, the rear end of which is fixedly connected to the top of the output rod of motor one. A circular groove is formed in the middle of the inner cavity of the chuck, and horizontal grooves are symmetrically formed at the four corners of the inner cavity of the chuck. A bidirectional lead screw is rotatably installed between the vertical horizontal grooves. A conical wheel one is fixedly sleeved on one side of the middle of the bidirectional lead screw, and a unidirectional lead screw is rotatably installed between the horizontal grooves on both sides. A conical wheel two is rotatably installed at the top of the unidirectional lead screw. Threaded seats are threaded onto the outside of both the bidirectional and unidirectional lead screws. A clamping plate is fixedly connected to the top of the threaded seats. Support frames are rotatably connected to the inner ends of the bidirectional lead screw and the top of the unidirectional lead screw. Motor three is fixedly connected to the upper end of the chuck.

[0011] Preferably, the circular groove and the transverse groove are interconnected, and the top end of the bidirectional lead screw is connected to the output end of the motor.

[0012] Preferably, the first and second conical wheels mesh with each other, and the threaded seat and the transverse groove are internally slidably connected.

[0013] Preferably, the lower end of the support frame is fixedly installed to the inner wall of the bottom end of the circular groove.

[0014] Preferably, the upper center of the base has a groove, an electric push rod is fixedly installed on one side of the groove, a slide is fixedly installed at the top of the electric push rod, an electric push rod is fixedly installed at the upper end of the slide, a support frame is fixedly connected to the top of the electric push rod, a support groove is opened on the inner side of the support frame, and multiple sets of rollers are rotatably installed inside the support groove.

[0015] Preferably, the slide block is slidably connected to the inside of the groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model provides a welding fixture for a heat exchanger shell. Through an adjustment mechanism, a motor can drive a gear to rotate via a transmission rod. The gear, in turn, engages with a meshing toothed plate to move a side plate. This allows the side plate to move a movable plate synchronously on a slide rail, thereby adjusting the distance between the movable plate and the fixed plate. This adjustment can be made according to the shell conditions, thus improving the flexibility of the fixture.

[0018] This utility model provides a welding fixture for a heat exchanger shell. Through a fixing mechanism, the two ends of the shell are positioned between two chucks. A rotating bidirectional lead screw drives a first conical wheel to rotate. Simultaneously, with the meshing of the first conical wheel and two second conical wheels, the bidirectional lead screw drives two unidirectional lead screws on both sides to rotate, thereby causing the corresponding threaded seats to move closer together. This causes the threaded seats to move the clamping plates synchronously closer, allowing the four sets of clamping plates to contact the outer walls of both ends of the shell, thus clamping the shell for fixation and facilitating subsequent welding. A motor drives the chucks to rotate, which in turn drives the shell to move synchronously, greatly improving the welding efficiency of the shell. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the welding fixture for the heat exchanger shell of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the front view of the welding fixture for the heat exchanger shell of this utility model.

[0021] Figure 3 This is a structural schematic diagram showing the detailed drawing of the welding fixture for the heat exchanger shell of this utility model;

[0022] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the fixing mechanism of this utility model.

[0024] In the diagram: 1. Base; 2. Fixing plate; 3. Adjustment mechanism; 4. Slide rail; 5. Movable plate; 6. Fixing mechanism; 7. Motor 1; 8. Groove; 9. Electric push rod 1; 10. Slide seat; 11. Electric push rod 2; 12. Support frame; 13. Support groove; 14. Roller; 31. Side plate; 32. Motor 2; 33. Transmission rod; 34. Gear; 35. Gear plate; 61. Chuck; 62. Circular groove; 63. Horizontal groove; 64. Double-direction lead screw; 65. Conical wheel 1; 66. Single-direction lead screw; 67. Conical wheel 2; 68. Threaded seat; 69. Clamping plate; 610. Support frame; 611. Motor 3. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to embodiments:

[0026] like Figures 1-5As shown, this utility model provides a welding fixture for a heat exchanger shell, including a base 1, a fixing plate 2 fixedly mounted on the upper right side of the base 1, an adjustment mechanism 3 mounted on the left end of the base 1, slide rails 4 symmetrically fixedly mounted on the upper left side of the base 1, a movable plate 5 slidably mounted on the slide rails 4, a fixing mechanism 6 mounted on the top opposite surfaces of the movable plate 5 and the fixing plate 2, and a motor 7 fixedly mounted on the outer side of the top of the movable plate 5 and the fixing plate 2.

[0027] A groove 8 is provided in the middle of the upper end of the base 1. An electric push rod 9 is fixedly provided on one side of the inside of the groove 8. A slide 10 is fixedly provided at the top of the electric push rod 9. An electric push rod 11 is fixedly provided at the upper end of the slide 10. A support frame 12 is fixedly connected to the top of the electric push rod 11. A support groove 13 is provided on the inner side of the support frame 12. Multiple sets of rollers 14 are rotatably installed inside the support groove 13.

[0028] The slide block 10 is slidably connected to the inside of the groove 8.

[0029] In this design, the movable plate 5 can slide on the slide rail 4, which improves the stability of the movable plate 5's movement. During the welding of the housing, the electric push rod 9 can be activated, which pushes the slide block 10 to move the support frame 12 synchronously, allowing the use position of the support frame 12 to be adjusted. Then, the electric push rod 11 is activated, which pushes the support frame 12 upward, causing the roller 14 on the support frame 12 to fit against the outer wall of the housing. When the housing rotates, it synchronously drives the roller 14 to rotate, thereby improving the stability of the housing rotation.

[0030] like Figure 4 As shown, the adjustment mechanism 3 includes a side plate 31. The bottom end of the side plate 31 is fixedly connected to both sides of the lower end of the movable plate 5. A second motor 32 is fixedly installed at the top of the side plate 31. A transmission rod 33 is installed at the output end of the second motor 32. A gear 34 is fixedly connected at the lower end of the transmission rod 33. A toothed plate 35 is fixedly installed at the left side of the base 1.

[0031] Gear 34 meshes with toothed plate 35.

[0032] In this solution, the continuous operation of motor 32 enables precise displacement of the movable plate 5 on the slide rail 4, thereby effectively adjusting the distance between the movable plate 5 and the fixed plate 2. This allows for flexible and precise adjustment of the distance according to the actual conditions of different sized housings, greatly improving the tooling's performance.

[0033] like Figure 5As shown, the fixing mechanism 6 includes a chuck 61. The rear end of the chuck 61 is fixedly connected to the top of the output rod of the motor 7. A circular groove 62 is provided in the middle of the inner cavity of the chuck 61. Horizontal grooves 63 are symmetrically provided at the four corners of the chuck 61. A bidirectional lead screw 64 is rotatably installed between the vertical horizontal grooves 63. A conical wheel 65 is fixedly sleeved on one side of the middle of the bidirectional lead screw 64. A unidirectional lead screw 66 is rotatably installed between the horizontal grooves 63 on both sides. A conical wheel 67 is rotatably installed at the top of the unidirectional lead screw 66. Threaded seats 68 are threadedly installed on the outside of both the bidirectional lead screw 64 and the unidirectional lead screw 66. A clamping plate 69 is fixedly connected to the top of the threaded seat 68. Support frames 610 are rotatably connected to the inner ends of the bidirectional lead screw 64 and the top of the unidirectional lead screw 66. A motor 611 is fixedly connected to the upper end of the chuck 61.

[0034] The circular groove 62 and the horizontal groove 63 are interconnected, and the top of the bidirectional lead screw 64 is connected to the output end of the motor 611.

[0035] Conical wheel 65 and conical wheel 67 mesh with each other, and threaded seat 68 and transverse groove 63 are internally slidably connected.

[0036] The lower end of the support frame 610 is fixedly installed on the inner wall of the bottom end of the circular groove 62.

[0037] In this scheme, the reverse rotation of motor 611 causes the bidirectional lead screw 64 to reverse. With the cooperation of conical wheel 65 and conical wheel 67, the two unidirectional lead screws 66 will also rotate in the opposite direction, causing the threaded seat 68 to drive the clamping plate 69 away from each other, releasing the fixation on the housing, and thus facilitating the disassembly of the housing.

[0038] The working principle of the welding fixture for the heat exchanger shell will be explained in detail below.

[0039] like Figures 1-5As shown, when using the heat exchanger shell welding fixture, the shell can first be placed between the two chucks 61. Then, motor 32 can be started. Motor 32 drives gear 34 to rotate via transmission rod 33. Gear 34 moves on meshing gear plate 35, which in turn drives movable plate 5 to slide synchronously on slide rail 4 via side plate 31, so that the two chucks 61 contact the two ends of the shell. By adjusting the distance between movable plate 5 and fixed plate 2, the fixture can fix shells of different sizes. Next, motor 611 is started. Motor 611 drives double-acting screw 64 to rotate, and double-acting screw 64 drives conical wheel 61. 5. The cone wheel 65 rotates, and the cone wheel 65, in conjunction with the meshing cone wheel 67, drives the one-way lead screws 66 on both sides to rotate synchronously. Through the rotation of the two-way lead screw 64 and the one-way lead screw 66, the corresponding threaded seats 68 can be driven to move closer to each other, so that the threaded seats 68 drive the clamping plates 69 to move closer synchronously, so that the four sets of clamping plates 69 contact the outer walls of both ends of the housing, thereby clamping the housing to complete the fixation of the housing. By starting the motor 7, the chuck 61 can be driven to rotate. Since the housing is fixed by the chuck 61, the rotation of the chuck 61 can drive the housing to rotate synchronously, thereby facilitating the welding of the housing.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A heat exchanger shell welding tool, comprising a base (1), a fixed plate (2) is fixedly arranged at the upper right side of the base (1), characterized in that: The left end of the base (1) is provided with an adjusting mechanism (3), the left side of the upper end of the base (1) is fixedly provided with a sliding rail (4) in symmetry, the sliding rail (4) is slidably provided with a movable plate (5), the top of the movable plate (5) and the opposite surface of the fixed plate (2) are provided with a fixing mechanism (6), and the top of the movable plate (5) and the fixed plate (2) is fixedly provided with a motor (7). The adjusting mechanism (3) comprises a side plate (31), the bottom end of the side plate (31) is fixedly connected with the lower end of the movable plate (5), the top of the side plate (31) is fixedly provided with a motor (32), the output end of the motor (32) is drivingly provided with a transmission rod (33), the lower end of the transmission rod (33) is fixedly connected with a gear (34), and the left side of the base (1) is fixedly provided with a gear plate (35).

2. The heat exchanger shell welding tooling of claim 1, wherein: The gear (34) is engaged with the gear plate (35).

3. The heat exchanger shell welding tooling of claim 1, wherein: The fixing mechanism (6) comprises a chuck (61), the rear end of the chuck (61) is fixedly connected with the output rod of the motor (7), a circular groove (62) is formed in the middle of the inner cavity of the chuck (61), horizontal grooves (63) are formed in the four corners of the chuck (61) in symmetry, a bidirectional screw rod (64) is rotatably arranged between the horizontal grooves (63), a bevel gear (65) is fixedly sleeved on one side of the middle of the bidirectional screw rod (64), unidirectional screw rods (66) are rotatably arranged between the horizontal grooves (63) on the two sides, a bevel gear (67) is rotatably arranged on the top of the unidirectional screw rod (66), the outer portions of the bidirectional screw rod (64) and the unidirectional screw rod (66) are threadedly provided with threaded seats (68), the top of the threaded seat (68) is fixedly connected with a clamping plate (69), the inner sides of the two ends of the bidirectional screw rod (64) and the top of the outer portion of the unidirectional screw rod (66) are rotatably connected with support frames (610), and the upper end of the chuck (61) is fixedly connected with a motor (611).

4. The heat exchanger shell welding tooling of claim 3, wherein: The circular groove (62) and the horizontal grooves (63) are in communication, and the top of the bidirectional screw rod (64) is drivingly connected with the output end of the motor (611).

5. The heat exchanger shell welding tooling of claim 3, wherein: The bevel gear (65) and the bevel gear (67) are engaged, and the threaded seat (68) and the horizontal grooves (63) are slidably connected.

6. The heat exchanger shell welding tooling of claim 3, wherein: The lower end of the support frame (610) is fixedly connected with the bottom end of the inner wall of the circular groove (62).

7. The heat exchanger shell welding tooling of claim 1, wherein: The upper end of the base (1) is provided with a recess (8), one side of the inner portion of the recess (8) is fixedly provided with an electric push rod (9), the top of the electric push rod (9) is fixedly provided with a sliding seat (10), the upper end of the sliding seat (10) is fixedly provided with an electric push rod (11), the top of the electric push rod (11) is fixedly connected with a supporting frame (12), the inner side of the supporting frame (12) is provided with a supporting groove (13), and a plurality of groups of rollers (14) are rotatably arranged in the inner portion of the supporting groove (13).

8. The heat exchanger shell welding tooling of claim 7, wherein: The sliding seat (10) is slidably connected with the inner portion of the recess (8).

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