Butt joint positioning device for heat exchanger production

Abstract

The utility model relates to a butt joint positioning device for heat exchanger production, including feeding station, and the operator or mechanical arm places the pipe bundle to be assembled one by one on two clamps of feeding frock, at this moment, the both ends of each pipe bundle are respectively built on the top of the lifting block of two side clamps, and the pipe bundle side wall and the free end of U-shaped plate form the initial contact positioning, when the pipe bundle completes initial placement, the driving part starts, and drives the connecting plate to descend along the vertical direction, the connecting plate moves down the lifting block of two side clamps through the telescopic link synchronously, and the hinge plate of the lifting block side wall turns down, and pushes the U-shaped plate to rotate around the hinge point, at this moment, the U-shaped plate in two hinge rod groups synchronously gathers to the pipe bundle direction, forms the double clamping force of radial and axial, and the base frame moves to the specified position of downstream butt joint equipment along the transmission direction of rectangular frame.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger manufacturing technology, and specifically to a docking and positioning device for heat exchanger manufacturing. Background Technology

[0002] Heat exchangers, as key heat exchange equipment widely used in chemical, energy, and HVAC industries, largely depend on the assembly precision and efficiency of their internal heat exchange elements (such as fins and tube bundles) for their core performance. In the assembly process, multiple tube bundles must be precisely inserted between two fins. This process places extremely high demands on positioning and clamping devices to provide a reliable foundation for subsequent welding or expansion joints. Currently, docking and positioning operations on heat exchanger production lines mostly rely on manual operation with simple fixing fixtures or general-purpose positioning tooling. This method has significant limitations; manual positioning and clamping are slow and difficult to adapt to the high-efficiency, continuous operation requirements of modern production lines. Utility Model Content

[0003] The main purpose of this utility model is to provide a docking and positioning device for heat exchanger production, so as to solve the problem that the existing technology has slow manual positioning and clamping speed, which is difficult to adapt to the needs of modern production lines for high-efficiency and continuous operation.

[0004] To achieve the above objectives, this utility model provides a docking and positioning device for heat exchanger production, including a feeding station;

[0005] The feeding station includes a rectangular frame and a base frame. The base frame is movably mounted on the rectangular frame, and multiple feeding fixtures are arranged along its transmission direction.

[0006] The feeding fixture includes two clamps, a connecting plate, and a drive component for lifting the connecting plate. The two clamps are symmetrically arranged on the base frame.

[0007] Each of the clamps includes a base, a lifting block, and two clamping arms;

[0008] The two clamping arms are symmetrically arranged on the base, and each includes two hinge rod groups, which are arranged along the transmission direction perpendicular to the base frame.

[0009] Each of the hinge rod assemblies includes a U-shaped plate and a hinge plate, one end of the U-shaped plate is hinged to one end of the hinge plate, and the bottom corner is hinged to the base, and the other end of the hinge plate is hinged to the side wall of the lifting block.

[0010] Each of the lifting blocks is fixed with a telescopic rod, which slides through the base frame and is fixedly connected to the connecting plate.

[0011] In a preferred embodiment, each of the clamping arms further includes a cross plate, and the ends of the two U-shaped plates away from the hinge plate are fixedly connected to the cross plate, with the two cross plates of each clamp used to hold the tube bundle.

[0012] A preferred embodiment is that the top wall of the support block has a curved groove for placing the tube bundle.

[0013] A preferred embodiment is that the driving component is a first cylinder, the cylinder seat of the first cylinder is fixedly connected to the base frame, and the piston rod is fixedly connected to the connecting plate.

[0014] In a preferred embodiment, the feeding station further includes a lead screw, a first motor, and a nut seat. The nut seat is fixedly connected to the base frame and screwed onto the lead screw. The lead screw is rotatably mounted on the rectangular frame along its length. The base of the first motor is fixedly connected to the rectangular frame, and its output shaft is coaxially connected to the lead screw.

[0015] A preferred embodiment is that the top wall of the base frame has a strip-shaped groove along its length, and a limiting plate is inserted into the strip-shaped groove, the limiting plate being located on one side of the feeding fixture.

[0016] A preferred embodiment is that the docking positioning device for heat exchanger production further includes a docking station located downstream of the feeding station, the docking station comprising two symmetrically arranged frames;

[0017] A rotating tube is horizontally rotatably installed on one side of each of the base frames. One end of the rotating tube is fixedly fitted with a ring plate, and the other end is connected to a drive mechanism for rotating it.

[0018] Multiple guide rods are fixed to one side wall of the ring plate, and multiple protrusion holes and notches are opened on the circumference. The fins of the heat exchanger are inserted on the multiple guide rods.

[0019] An extension rod is provided axially in each of the extension holes. One end of the extension rod can extend out of the extension hole and abut against one end of the tube bundle, and the other end is connected to a second cylinder. The second cylinder is fixedly connected to the ring plate.

[0020] A pushing mechanism is installed at each of the notches to move the fins of the heat exchanger along the guide rod;

[0021] The two sides of the rectangular frame are fixedly connected to the two base frames, which are located directly below the two ring plates.

[0022] A preferred embodiment is that the actuation mechanism includes a connecting frame and a third cylinder;

[0023] The connecting frame is fixed to one side wall of the ring plate and located at the notch. The cylinder seat of the second cylinder is fixedly connected to the connecting frame, and the piston rod is fixed with a flexible block. The flexible block can pass through the notch and abut against the fin through the third cylinder.

[0024] The beneficial effects of the above scheme are:

[0025] The operator or robotic arm places the tube bundles to be assembled one by one onto the two clamps of the feeding fixture. At this time, both ends of each tube bundle rest on the top of the lifting blocks of the two clamps, and the sidewalls of the tube bundles form initial contact and positioning with the free ends of the U-shaped plates. After the tube bundles are initially placed, the drive mechanism starts, driving the connecting plate to descend vertically. The connecting plate synchronously drives the lifting blocks of the two clamps to move downward through the telescopic rods, and the hinge plates on the sidewalls of the lifting blocks rotate downward accordingly, pushing the U-shaped plates to rotate around the hinge points. At this time, the U-shaped plates in the two hinge rod groups synchronously retract towards the tube bundles, forming a double clamping force in the radial and axial directions, and the base frame moves along the transmission direction of the rectangular frame to the designated position of the downstream docking equipment. Because the feeding fixture adopts a modular design, multiple feeding fixtures can be arranged sequentially along the transmission direction of the base frame to achieve continuous feeding of multiple sets of tube bundles. When the feeding fixture reaches directly above the docking equipment, the driving component reverses and drives the connecting plate to rise. Through the telescopic rod, the lifting block moves upward. During the upward movement of the lifting block, the hinge plate rotates upward, pushing the U-shaped plate outward. The hinge rod group returns to the open state, releasing the clamping force on the tube bundle. The driving component drives the connecting plate to reset to the highest point, and the lifting block returns to its initial height. The U-shaped plate maintains its maximum open / closed state under the action of the hinge structure. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 This is a three-dimensional structural diagram of the material feeding station of this utility model;

[0028] Figure 2 yes Figure 1 Enlarged structural diagram of region A in the middle;

[0029] Figure 3 This is a three-dimensional structural diagram of the new material feeding station from another perspective;

[0030] Figure 4 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 5 This is a three-dimensional structural diagram of the docking station of this utility model.

[0032] Explanation of reference numerals in the attached figures

[0033] 1. Tube bundle; 2. Fin;

[0034] 10. Feeding station; 11. Rectangular frame; 12. Base frame; 13. Feeding fixture; 130. Fixture; 131. Connecting plate; 132. Drive component; 1301. Base; 1302. Lifting block; 1304. Clamping arm; 1305. Hinge rod assembly; 1306. U-shaped plate; 1307. Hinge plate; 133. Telescopic rod; 1308. Horizontal plate; 13021. Curved groove; 14. Lead screw; 15. First motor; 16. Nut seat; 121. Strip groove; 17. Limiting plate;

[0035] 20. Docking station; 21. Frame; 22. Rotating tube; 23. Ring plate; 25. Guide rod; 230. Protrusion hole; 231. Notch; 26. Extension rod; 27. Second cylinder; 28. Pushing mechanism; 281. Connecting frame; 282. Third cylinder; 283. Flexible block. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0037] like Figures 1-3 As shown, this embodiment provides a docking and positioning device for heat exchanger production, including a feeding station 10. The feeding station 10 includes a rectangular frame 11 and a base frame 12. The base frame 12 is movably mounted on the rectangular frame 11, and multiple feeding fixtures 13 are arranged on the base frame 12 along its transmission direction. Each feeding fixture 13 includes two clamps 130, a connecting plate 131, and a driving member 132 for driving the connecting plate 131 to rise and fall. The two clamps 130 are symmetrically arranged on the base frame 12. The driving member 132 is a first cylinder, the cylinder seat of which is fixedly connected to the base frame 12, and the piston rod is fixedly connected to the connecting plate 131. Figure 2As shown, each clamp 130 includes a base 1301, a lifting block 1302, and two clamping arms 1304. The two clamping arms 1304 are symmetrically arranged on the base 1301, and each clamping arm 1304 includes two hinge rod assemblies 1305, which are arranged along a direction perpendicular to the transmission direction of the base frame 12. Each hinge rod assembly 1305 includes a U-shaped plate 1306 and a hinge plate 1307. One end of the U-shaped plate 1306 is hinged to one end of the hinge plate 1307, and the bottom corner of the U-shaped plate 1306 is hinged to the base 1301. The other end of the hinge plate 1307 is hinged to the side wall of the lifting block 1302. Each clamping arm 1304 also includes a horizontal plate 1308. The ends of the two U-shaped plates 1306 away from the hinge plate 1307 are fixedly connected to the horizontal plate 1308. The two horizontal plates 1308 of each clamp 130 are used to clamp the tube bundle 1. A telescopic rod 133 is fixedly mounted on each lifting block 1302. The telescopic rod 133 slides through the base frame 12 and is fixedly connected to the connecting plate 131. A curved groove 13021 is formed on the top wall of the lifting block 1302, and the curved groove 13021 is used to place the tube bundle 1.

[0038] The operator or robotic arm places the tube bundles 1 to be assembled one by one onto the two clamps 130 of the feeding fixture 13. At this time, both ends of each tube bundle 1 rest on the top of the lifting blocks 1302 of the two clamps 130, and the side wall of the tube bundle 1 forms initial contact and positioning with the free end of the U-shaped plate 1306. After the tube bundle 1 is initially placed, the drive component 132 is activated, driving the connecting plate 131 to descend vertically. The connecting plate 131 drives the lifting blocks 1302 of the two clamps 130 to move downward through the telescopic rod 133. The hinge plate 1307 on the side wall of the lifting block 1302 rotates downward accordingly, pushing the U-shaped plate 1306 to rotate around the hinge point. At this time, the U-shaped plate 1306 in the two hinge rod groups 1305 simultaneously retracts towards the tube bundle 1, forming a double clamping force in the radial and axial directions. The base frame 12 moves along the transmission direction of the rectangular frame 11 to the designated position of the downstream docking equipment. Because the feeding fixture 13 adopts a modular design, multiple feeding fixtures 13 can be arranged sequentially along the transmission direction of the base frame 12 to realize continuous feeding of multiple sets of tube bundles 1. When the feeding fixture 13 reaches directly above the docking equipment, the driving component 132 drives the connecting plate 131 to rise in the opposite direction, and drives the lifting block 1302 to move upward through the telescopic rod 133. During the rise of the lifting block 1302, the hinge plate 1307 rotates upward accordingly, pushing the U-shaped plate 1306 to unfold outward, and the hinge rod group 1305 returns to the open state, releasing the clamping force on the tube bundle 1. The driving component 132 drives the connecting plate 131 to reset to the highest point, the lifting block 1302 returns to the initial height, and the U-shaped plate 1306 maintains the maximum opening and closing state under the action of the hinge structure.

[0039] The feeding station 10 also includes a lead screw 14, a first motor 15, and a nut seat 16. The nut seat 16 is fixedly connected to the base frame 12 and screwed onto the lead screw 14. The lead screw 14 is rotatably mounted on the rectangular frame 11 along its length. The base of the first motor 15 is fixedly connected to the rectangular frame 11, and its output shaft is coaxially connected to the lead screw 14. Driving the first motor 15 causes the lead screw 14 to rotate, and the lead screw 14, through the nut seat 16, drives the base frame 12 to move.

[0040] The top wall of the base frame 12 has a strip-shaped groove 121 along its length, and a limiting plate 17 is inserted into the strip-shaped groove 121. The limiting plate 17 is located on one side of the feeding fixture 13. One end of the multiple tube bundles 1 abuts against the limiting plate 17. After removing the limiting plate 17, the tube bundles 1 are positioned.

[0041] The docking positioning device for heat exchanger production also includes a docking station 20, which is located downstream of the feeding station 10. The docking station 20 includes two symmetrically arranged frames 21. A rotating tube 22 is horizontally rotatably mounted on one side of each frame 12. One end of the rotating tube 22 is fixedly fitted with a ring plate 23, and the other end is connected to a drive mechanism for rotating it. The drive mechanism uses existing technology and will not be described in detail. The drive mechanism may include a third motor and a driven spur gear. The driven spur gear is fixedly mounted on the rotating tube, and the third motor is fixedly mounted on the frame. The output shaft of the third motor is fixedly fitted with the drive spur gear. The drive spur gear meshes with the driven spur gear, driving the third motor to work. The third motor drives the drive spur gear to rotate, and the drive spur gear drives the rotating tube to rotate through the driven spur gear. Multiple guide rods 25 are fixedly mounted on one side wall of the annular plate 23, and multiple protrusion holes 230 and notches 231 are opened around the circumference. The fins 2 of the heat exchanger (the fins 2 are annular plate structures) are inserted into the multiple guide rods 25. An extension rod 26 is arranged axially in each protrusion hole 230. One end of the extension rod 26 can extend out of the protrusion hole 230 and abut against one end of the tube bundle 1, and the other end of the extension rod 26 is connected to a second cylinder 27. The cylinder seat of the second cylinder 27 is fixedly connected to the annular plate 23. A pushing mechanism 28 for pushing the fins 2 of the heat exchanger along the guide rod 25 is installed at each notch 231. The pushing mechanism 28 includes a connecting frame 281 and a third cylinder 282. The connecting frame 281 is fixed to one side wall of the ring plate 23 and located at the notch 231. The cylinder seat of the second cylinder 27 is fixedly connected to the connecting frame 281, and a flexible block 283 is fixed to the piston rod. The flexible block 283 can pass through the notch 231 and abut against the fin 2 through the third cylinder 282. The two sides of the rectangular frame 11 are fixedly connected to the two base frames 12, which are located directly below the two ring plates 23.

[0042] After the feeding station 10 completes the clamping and positioning of the tube bundle 1, the base frame 12 moves along the transmission direction of the rectangular frame 11, conveying the feeding fixture 13 carrying the tube bundle 1 directly below the two annular plates 23. At this point, the preparation stage for the docking process begins. At the docking station 20, the heat exchanger fins 2 are pre-inserted onto multiple guide rods 25 fixed circumferentially on one side wall of the annular plate 23. The guide rods 25 provide initial positioning and support for the fins 2. The rotating tube 22 and the annular plate 23 are in their initial angle positions, and the positions of the protruding holes 230 and notches 231 correspond to the positions of the tube bundle 1 on the feeding fixture 13 below. The drive component 132 drives the connecting plate 131 to reset to its highest point, and the lifting block 1302 returns to its initial height. The U-shaped plate maintains its maximum opening and closing state under the action of the hinge structure, so that the tube bundle is lifted between the two lowermost extension rods 26. The tube bundle and the lowering shaft are coaxially arranged. When the tube bundle 1 reaches the designated docking position, the two lowermost second cylinders 27 are activated, driving the extension rods 26 to move axially along the extension hole 230. One end of the extension rod 26 extends out of the extension hole 230 and abuts against... At one end of the tube bundle 1, two drive mechanisms work synchronously, driving the rotating tube 22 to rotate. Repeating the above actions, multiple tube bundles 1 are clamped. The piston rod of the third cylinder 282 extends, causing the flexible block 283 to pass through the notch 231 and abut against the fin 2. The third cylinder 282 then continues to push, causing the fin 2 to move along the guide rod 25 towards the tube bundle 1. During this process, the extension rod 26 continuously abuts against the end of the tube bundle 1 for guidance until one end of the tube bundle 1 is precisely inserted into the mounting hole of the fin 2. The fins 2 on both sides are connected to the tube bundle 1. The other side ring plate 23 can operate according to the same process, that is, by aligning the extension rod 26 with the other end of the tube bundle 1, the pushing mechanism 28 pushes the other side fin 2 to move along the guide rod 25, completing the connection between both ends of the tube bundle 1 and the two fins 2. This completes the insertion of multiple tube bundles 1 onto two fins 2.

[0043] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A docking and positioning device for heat exchanger manufacturing, characterized in that, include: The feeding station includes a rectangular frame and a base frame. The base frame is movably mounted on the rectangular frame and multiple feeding fixtures are arranged along its transmission direction. Each of the feeding fixtures includes two clamps, a connecting plate, and a drive component for lifting the connecting plate. The two clamps are symmetrically arranged on the base frame. Each of the clamps includes a base, a lifting block, and two clamping arms; The two clamping arms are symmetrically arranged on the base, and each includes two hinge rod groups, which are arranged along the transmission direction perpendicular to the base frame. Each of the hinge rod assemblies includes a U-shaped plate and a hinge plate, one end of the U-shaped plate is hinged to one end of the hinge plate, and the bottom corner is hinged to the base, and the other end of the hinge plate is hinged to the side wall of the lifting block. Each of the lifting blocks is fixed with a telescopic rod, which slides through the base frame and is fixedly connected to the connecting plate.

2. The docking positioning device for heat exchanger production according to claim 1, characterized in that, Each clamping arm also includes a horizontal plate, and the ends of the two U-shaped plates away from the hinge plate are fixedly connected to the horizontal plate. The two horizontal plates of each clamp are used to hold the tube bundle.

3. The docking positioning device for heat exchanger production according to claim 1, characterized in that, The top wall of the support block has a curved groove, which is used to place the tube bundle.

4. The docking positioning device for heat exchanger production according to claim 1, characterized in that, The driving component is a first cylinder, the cylinder seat of the first cylinder is fixedly connected to the base frame, and the piston rod is fixedly connected to the connecting plate.

5. The docking positioning device for heat exchanger production according to claim 1, characterized in that, The feeding station also includes a lead screw, a first motor, and a nut seat. The nut seat is fixedly connected to the base frame and screwed onto the lead screw. The lead screw is rotatably mounted on the rectangular frame along the length of the rectangular frame. The base of the first motor is fixedly connected to the rectangular frame, and its output shaft is coaxially connected to the lead screw.

6. The docking positioning device for heat exchanger production according to claim 1, characterized in that, The top wall of the base frame has a strip-shaped groove along its length, and a limiting plate is inserted into the strip-shaped groove. The limiting plate is located on one side of the feeding fixture.

7. The docking positioning device for heat exchanger production according to any one of claims 1-6, characterized in that, It also includes a docking station, which is located downstream of the feeding station, and the docking station includes two symmetrically arranged frames. A rotating tube is horizontally rotatably installed on one side of each of the base frames. One end of the rotating tube is fixedly fitted with a ring plate, and the other end is connected to a drive mechanism for rotating it. Multiple guide rods are fixed to one side wall of the ring plate, and multiple protrusion holes and notches are opened on the circumference. The fins of the heat exchanger are inserted on the multiple guide rods. An extension rod is provided axially in each of the extension holes. One end of the extension rod can extend out of the extension hole and abut against one end of the tube bundle, and the other end is connected to a second cylinder. The second cylinder is fixedly connected to the ring plate. A pushing mechanism is installed at each of the notches to move the fins of the heat exchanger along the guide rod; The two sides of the rectangular frame are fixedly connected to the two base frames, which are located directly below the two ring plates.

8. The docking positioning device for heat exchanger production according to claim 7, characterized in that, The propulsion mechanism includes a connecting frame and a third cylinder; The connecting frame is fixed to one side wall of the ring plate and located at the notch. The cylinder seat of the second cylinder is fixedly connected to the connecting frame, and the piston rod is fixed with a flexible block. The flexible block can pass through the notch and abut against the fin through the third cylinder.

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