Heat exchanger assembling and positioning tool

Abstract

The utility model discloses a heat exchanger assembling and positioning tool, which relates to the technical field of heat exchangers and comprises a bottom frame, a box body is arranged at the upper end of the bottom frame, supporting tables are symmetrically arranged at the upper end of the box body, a cross-shaped sliding groove is arranged on the table top of the box body, and supporting frames are symmetrically arranged in the box body. A first motor and a second motor are installed on the inner sides of the two supporting frames respectively, a first rotating disc is installed at the output end of the first motor, spiral claw teeth are arranged on the first rotating disc, sliding blocks are connected to the claw teeth in a meshed mode, positioning pins are installed on the sliding blocks, and the sliding blocks are in sliding fit with the sliding grooves. The problem that in the prior art, when heat exchanger jigs of different sizes are replaced, the jigs are collided is solved, the first motor drives the first rotating disc to rotate, the claw teeth on the first rotating disc drive the sliding blocks to slide along the sliding grooves, and therefore the position of the positioning pin is adjusted, the jigs do not need to be replaced, the jigs are prevented from being collided and deformed when replaced, and the production efficiency is improved. And the positioning pin is adjusted through the first motor to facilitate operation.

Description

A heat exchanger assembly and positioning fixture Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a heat exchanger assembly and positioning fixture. Background Technology

[0002] A heat exchanger is an energy-saving device that facilitates 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 to meet process requirements. It is also a key component for improving energy efficiency. Heat exchangers can be classified by structure as: floating head heat exchangers, fixed tube sheet heat exchangers, U-tube sheet heat exchangers, and plate heat exchangers. Plate heat exchangers are characterized by high heat transfer efficiency, low resistance coefficient, and compact structure. Their heat exchange channels are formed by stacking numerous plates of the same shape, enabling heat exchange between cold and hot fluids within the channels. Vacuum brazing is a mature welding technology commonly used in the industry for plate heat exchangers.

[0003] Existing multi-layer radiators require stacking and assembling a base plate, several flow channel layers, and a top plate sequentially using locating pins to form an overlapping multi-layer heat exchanger assembly. This assembly is then fitted with welding fixtures and welded into a vacuum diffusion welding machine, integrating the various components of the multi-layer heat exchanger into a single unit. However, during production, it has been found that different fixtures are needed for assembling radiator assemblies of different sizes. Fixture replacement is prone to damage from impacts, causing deformation and damage to the locating pins, and the fixture replacement process is cumbersome. Therefore, a heat exchanger assembly positioning fixture is needed to solve these problems. Summary of the Invention

[0004] The purpose of this utility model is to provide a heat exchanger assembly and positioning fixture to solve the above-mentioned defects caused by the prior art.

[0005] A heat exchanger assembly and positioning fixture includes a base frame, a housing mounted on the upper end of the base frame, and support platforms symmetrically mounted on the upper end of the housing. A cross-shaped sliding groove is provided on the platform surface of the housing. Support frames are symmetrically mounted inside the housing. A first motor and a second motor are respectively mounted on the inner top sides of the two support frames. A first rotating disk is mounted on the output end of the first motor. The first rotating disk has helical claw teeth, and sliding blocks are meshed with the claw teeth. Positioning pins are mounted on the sliding blocks, and the sliding blocks slide in conjunction with the sliding groove.

[0006] Preferably, the platform of the housing is provided with a plurality of guide grooves, the output end of the second motor is provided with a second rotating disk, the second rotating disk is provided with an arc-shaped through groove, a moving block is slidably connected in the guide groove, a push plate is installed on the moving block, and a slide rod that slides with the through groove is installed at the lower end of the moving block.

[0007] Preferably, a support plate is installed on the upright of the base frame, a linear slide rail is installed on the support plate, a connecting frame is installed on the slide table of the linear slide rail, a cylinder is installed on the connecting frame, a connecting plate is installed at the output end of the cylinder, a vacuum suction cup is installed on the connecting plate, guide rods that slide and cooperate with the connecting frame are symmetrically installed on the connecting plate, slide rails are installed on the support plate symmetrically on both sides of the linear slide rail, sliders are slidably connected to the slide rails, and the sliders are installed on the connecting frame.

[0008] Preferably, a base plate, several flow channel layers, and a top plate are stacked sequentially on the support platform, and the positioning pin is slidably connected to the mounting holes on the base plate, the flow channel layers, and the top plate.

[0009] Preferably, the position sensor transmitters are symmetrically mounted on the support plate, and the position sensor receivers are mounted on the connecting frame.

[0010] The advantages of this utility model are as follows: This utility model uses a first motor to drive a first rotating disk to rotate, and the claw teeth on the first rotating disk drive the sliding block to slide along the slide groove, thereby adjusting the position of the positioning pin. This eliminates the need to replace the fixture, avoids the fixture from being bumped and deformed during replacement, and the positioning pin can be adjusted by the first motor to facilitate operation and is applicable to the assembly of heat exchangers of different shapes and sizes.

[0011] This invention uses a second motor to drive a second rotating disk. The through groove on the second rotating disk pushes a sliding rod, which slides in the guide groove via a moving block. This causes the push plate to clamp the bottom plate, the flow channel layer, and the top plate, so that the center of the clamped bottom plate, the flow channel layer, and the top plate coincides with the center of the support platform. This facilitates centering operations on the bottom plate, the flow channel layer, and the top plate, thereby improving the overall assembly accuracy of the device. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0013] Figures 2 and 3 are schematic diagrams of the internal structure of the box of this utility model from different perspectives.

[0014] Figure 4 is a structural schematic diagram of the support platform for the box body of this utility model.

[0015] Figure 5 is a schematic diagram of the structure of the first rotating disk and the second rotating disk of this utility model.

[0016] Figure 6 is a structural schematic diagram of the back of the connecting frame of this utility model.

[0017] The components are as follows: 1. Base frame; 2. Housing; 3. Support platform; 4. Slide groove; 5. Support frame; 6. First motor; 7. Second motor; 8. First rotating disk; 9. Claw teeth; 10. Sliding block; 11. Positioning pin; 12. Guide groove; 13. Second rotating disk; 14. Through groove; 15. Moving block; 16. Push plate; 17. Slide rod; 18. Support plate; 19. Linear slide rail; 20. Connecting frame; 21. Cylinder; 22. Connecting plate; 23. Vacuum suction cup; 24. Guide rod; 25. Slide rail; 26. Slider; 27. Base plate; 28. Flow channel layer; 29. ​​Top plate; 30. Position sensor. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] As shown in Figures 1 to 6, a heat exchanger assembly and positioning fixture includes a base frame 1. A housing 2 is mounted on the upper end of the base frame 1. Support platforms 3 are symmetrically mounted on the upper end of the housing 2. A cross-shaped sliding groove 4 is provided on the platform of the housing 2. Support frames 5 are symmetrically mounted inside the housing 2. A first motor 6 and a second motor 7 are respectively mounted on the inner top side of the two support frames 5. A first rotating disk 8 is mounted on the output end of the first motor 6. The first rotating disk 8 is provided with spiral claw teeth 9. A sliding block 10 is meshed with the claw teeth 9. A positioning pin 11 is mounted on the sliding block 10. The sliding block 10 slides in cooperation with the sliding groove 4. The first motor 6 and the second motor 7 are both electrically connected to the field power supply. The support platform 3 is provided with a chamfer, which serves to limit the sliding block 10. The first motor 6 drives the claw teeth 9 of the spiral to push the sliding block 10 to move, realizing the micron-level position adjustment of the positioning pin 11. There is no need to manually change the fixture, which is convenient to operate. The closed-loop system controlled by the motor can eliminate the error of manual adjustment, ensuring that the mounting holes of the bottom plate 27, the flow channel layer 28 and the top plate 29 are precisely aligned with the positioning pin 11, and the assembly position error is reduced to ±0.05mm.

[0020] In this embodiment, the platform of the housing 2 is provided with a plurality of guide grooves 12, the output end of the second motor 7 is provided with a second rotating disk 13, the second rotating disk 13 is provided with an arc-shaped through groove 14, a moving block 15 is slidably connected in the guide groove 12, a push plate 16 is installed on the moving block 15, and a slide rod 17 that slides with the through groove 14 is installed at the lower end of the moving block 15. The second motor 7 drives the second rotating disk 13. The through slot 14 on the second rotating disk 13 pushes the slide rod 17 and slides in the guide slot 12 through the moving block 15, so that the push plate 16 clamps the bottom plate 27, the flow channel layer 28 and the top plate 29, so that the center of clamping the bottom plate 27, the flow channel layer 28 and the top plate 29 coincides with the center of the support platform 3, which facilitates the centering operation of the bottom plate 27, the flow channel layer 28 and the top plate 29. The second motor 7 drives the push plate 16 to radially and synchronously clamp the bottom plate 27, the flow channel layer 28 and the top plate 29 through the geometric constraint of the arc-shaped through slot 14 and the slide rod 17, so that the axis of the bottom plate 27, the flow channel layer 28 and the top plate 29 automatically coincides with the center of the support platform 3, with a centering accuracy of ±0.1mm, ensuring the assembly accuracy when the bottom plate 27, the flow channel layer 28 and the top plate 29 are stacked.

[0021] In this embodiment, a support plate 18 is installed on the upright of the base frame 1. A linear slide rail 19 is installed on the support plate 18. A connecting frame 20 is installed on the slide table of the linear slide rail 19. A cylinder 21 is installed on the connecting frame 20. A connecting plate 22 is installed at the output end of the cylinder 21. A vacuum suction cup 23 is installed on the connecting plate 22. Guide rods 24 that slide and cooperate with the connecting frame 20 are symmetrically installed on the connecting plate 22. Slide rails 25 are installed symmetrically on both sides of the linear slide rail 19 on the support plate 18. A slider 26 is slidably connected to the slide rail 25 and is installed on the connecting frame 20. The linear slide rail 19 is electrically connected to the field power supply. The linear slide rail 19 and the position sensor 30 form a closed-loop feedback system to monitor the movement trajectory of the connecting frame 20 in real time. Combined with the dual guidance of the guide rods 24 and the slide rails 25, the positioning repeatability of the vacuum suction cup 23 during the grasping, transfer and placement process is ensured to be ≤±0.02mm.

[0022] In this embodiment, a base plate 27, several flow channel layers 28 and a top plate 29 are stacked sequentially on the support platform 3, and the positioning pin 11 is slidably connected to the mounting holes on the base plate 27, the flow channel layers 28 and the top plate 29.

[0023] In this embodiment, the transmitting end of the position sensor 30 is symmetrically mounted on the support plate 18, and the receiving end of the position sensor 30 is mounted on the connecting frame 20. The position sensor 30 is electrically connected to the field power supply, and the position of the connecting frame 20 is detected by the position sensor 30 to ensure the accuracy of the position during the movement of the bottom plate 27, the several flow channel layers 28, and the top plate 29.

[0024] The working principle of this utility model is as follows: according to the position of the mounting holes of the bottom plate 27, the flow channel layer 28 and the top plate 29, the first motor 6 is started to drive the first rotating disk 8 to rotate, and the claw teeth 9 on the first rotating disk 8 drive the sliding block 10 to slide along the slide groove 4, thereby adjusting the position of the positioning pin 11.

[0025] The second motor 7 is started to drive the second rotating disk 13. The through groove 14 on the second rotating disk 13 pushes the slide rod 17 and slides in the guide groove 12 through the moving block 15, so that the push plate 16 clamps the bottom plate 27, the flow channel layer 28 and the top plate 29, so that the center of clamping the bottom plate 27, the flow channel layer 28 and the top plate 29 coincides with the center of the support platform 3. The bottom plate 27, the flow channel layer 28 and the top plate 29 are centered, and the linear slide rail 19 is started.

[0026] The linear slide rail 19 is activated, which moves the connecting frame 20 above the support platform 3 on the side of the second rotating disk 13. Under the guidance of the guide rod 24, the starting cylinder 21 moves the connecting plate 22 downward. Then, the vacuum suction cup 23 draws a vacuum to adsorb the bottom plate 27, the flow channel layer 28, and the top plate 29. Subsequently, the cylinder 21 is activated in reverse, causing the bottom plate 27, the flow channel layer 28, and the top plate 29 to detach from the support platform 3 on the side of the second rotating disk 13. The linear slide rail 19 is activated, which moves the connecting frame 20 above the support platform 3 on the side of the first rotating disk 8. Under the guidance of the guide rod 24, the starting cylinder 21 moves the connecting plate 22 downward. Then, the vacuum suction cup 23 takes in air and does not adsorb the bottom plate 27, the flow channel layer 28, and the top plate 29. Subsequently, the cylinder 21 is activated in reverse, causing the bottom plate 27, the flow channel layer 28, and the top plate 29 to detach from the support platform 3 on the side of the first rotating disk 8, thus completing the sequential loading and assembly operation.

[0027] This utility model uses a first motor 6 to drive a first rotating disk 8 to rotate. The claw teeth 9 on the first rotating disk 8 drive the sliding block 10 to slide along the slide groove 4, thereby adjusting the position of the positioning pin 11. This eliminates the need to replace the fixture, avoids the fixture from being bumped and deformed during replacement, and the positioning pin 11 is easily adjusted by the first motor 6.

[0028] This utility model uses a second motor 7 to drive a second rotating disk 13. The through groove 14 on the second rotating disk 13 pushes the slide rod 17, and the moving block 15 slides in the guide groove 12, so that the push plate 16 clamps the bottom plate 27, the flow channel layer 28 and the top plate 29, so that the center of clamping the bottom plate 27, the flow channel layer 28 and the top plate 29 coincides with the center of the support platform 3, which facilitates the centering operation of the bottom plate 27, the flow channel layer 28 and the top plate 29.

[0029] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A heat exchanger assembly and positioning fixture, characterized in that: Includes a base frame (1), a box (2) is installed on the upper end of the base frame (1), a support platform (3) is symmetrically installed on the upper end of the box (2), a cross-shaped sliding groove (4) is provided on the platform of the box (2), a support frame (5) is symmetrically installed inside the box (2), a first motor (6) and a second motor (7) are respectively installed on the inner top side of the two support frames (5), a first rotating disk (8) is installed at the output end of the first motor (6), a spiral claw tooth (9) is provided on the first rotating disk (8), a sliding block (10) is meshed on the claw tooth (9), a positioning pin (11) is installed on the sliding block (10), and the sliding block (10) slides in cooperation with the sliding groove (4).

2. The heat exchanger assembly and positioning fixture according to claim 1, characterized in that: The platform of the box (2) is provided with several guide grooves (12). The output end of the second motor (7) is equipped with a second rotating disk (13). The second rotating disk (13) is provided with an arc-shaped through groove (14). A moving block (15) is slidably connected in the guide groove (12). A push plate (16) is installed on the moving block (15). A slide rod (17) that slides with the through groove (14) is installed at the lower end of the moving block (15).

3. The heat exchanger assembly and positioning fixture according to claim 1, characterized in that: A support plate (18) is installed on the column of the base frame (1). A linear slide rail (19) is installed on the support plate (18). A connecting frame (20) is installed on the slide table of the linear slide rail (19). A cylinder (21) is installed on the connecting frame (20). A connecting plate (22) is installed at the output end of the cylinder (21). A vacuum suction cup (23) is installed on the connecting plate (22). Guide rods (24) that slide and cooperate with the connecting frame (20) are symmetrically installed on the connecting plate (22). A slide rail (25) is installed on both sides of the support plate (18) symmetrically opposite to the linear slide rail (19). A slider (26) is slidably connected on the slide rail (25). The slider (26) is installed on the connecting frame (20).

4. The heat exchanger assembly and positioning fixture according to claim 1, characterized in that: A base plate (27), several flow channel layers (28) and a top plate (29) are stacked sequentially on the support platform (3). The positioning pin (11) is slidably connected to the mounting holes on the base plate (27), the flow channel layers (28) and the top plate (29).

5. The heat exchanger assembly and positioning fixture according to claim 3, characterized in that: The position sensor (30) transmitter is symmetrically mounted on the support plate (18), and the position sensor (30) receiver is mounted on the connecting frame (20).

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