A finned heat exchanger welding apparatus and method

Abstract

This invention relates to the field of finned heat exchanger processing technology, and discloses a finned heat exchanger welding equipment and welding method, including a frame. One end of the frame is provided with a storage module for storing finned tubes. The bottom of the storage module is provided with a discharge module for arranging and transferring the finned tubes. One side of the storage module is provided with a transfer module for discharging semi-finished products after the finned tubes and frame have been welded. Both the transfer module and the discharge module are connected to the frame via an electric slide. The other end of the frame is provided with an adjustment module for adjusting the position of the finned tubes and the frame. Above the adjustment module is a welding module for welding the finned tubes and the frame. This invention achieves automated welding of finned tubes and frames through the precise coordination of the discharge module, storage module, transfer module, welding module, and adjustment module, reducing the workload of workers and lowering the labor costs of the factory.

Description

Technical Field

[0001] This invention relates to the field of finned heat exchanger processing technology, specifically to a finned heat exchanger welding equipment and welding method. Background Technology

[0002] Finned heat exchangers are devices used for heating air in drying systems. They mainly consist of fins, a base tube, and a frame. The fins are arranged in two ways: longitudinal and radial. The base tube is mostly round.

[0003] Currently, some heat exchange tubes on the market use a ring-tooth method to weld fins onto the base tube, and then weld frames to both ends of the heat exchange tube to form a heat exchanger.

[0004] A search revealed Chinese patent CN211680453U, which discloses an automatic welding machine for finned heat exchangers. This machine utilizes a combination of three screw drive mechanisms to drive the welding torch in three dimensions from different directions, enabling welding of copper pipe joints of varying heights and multiple rows of copper pipe joints. However, it still has the following problems:

[0005] 1. Before welding the copper pipe joint, the copper pipe needs to be welded to the frame in advance to ensure the stability of the heat exchanger transfer before it is fully processed. If the copper pipe is welded to the frame manually, the quality of the welding depends heavily on the worker's skill, which leads to unstable welding quality of the heat exchanger.

[0006] 2. When using mechanical welding, multiple finned tubes need to be inserted into the frame manually, and workers need to keep the finned tubes and the frame stable so that the machine can weld the finned tubes and the frame in one go. This results in a high workload for workers and reduced efficiency over time.

[0007] 3. When welding finned tubes to the frame, workers often take multiple finned tubes at once and place them randomly, which makes the finned tubes easy to be damaged by foreign objects. Summary of the Invention

[0008] Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a finned heat exchanger welding device. The main solution is to address the issues of needing to pre-weld the copper tubes to the frame before welding the copper tube joints, the manual welding of the copper tubes to the frame (which relies heavily on worker skill and leads to inconsistent welding quality), and the tendency for workers to handle multiple finned tubes at once and place them haphazardly during welding, making the finned tubes susceptible to damage from external objects.

[0010] Technical solution

[0011] To achieve the above objectives, the present invention provides the following technical solution:

[0012] A finned heat exchanger welding device includes a frame. One end of the frame is provided with a storage module for storing finned tubes. The bottom of the storage module is provided with a discharge module for arranging and transferring the finned tubes. One side of the storage module is provided with a transfer module for discharging semi-finished products after the finned tubes and frame have been welded together. Both the transfer module and the discharge module are connected to the frame via an electric slide. The other end of the frame is provided with an adjustment module for adjusting the position of the finned tubes and the frame. Above the adjustment module is a welding module for welding the finned tubes and the frame. Both sides of the frame are provided with pushing components for placing the frame.

[0013] Furthermore, the material storage module includes two discharge racks, both of which are fixed to the bottom inner wall of the frame by bolts, and the two discharge racks are symmetrically distributed. The finned tubes are placed in the groove between the two discharge racks, and the opposite sides of the two discharge racks are provided with a limiting mechanism to block the discharge of the finned tubes.

[0014] Based on the aforementioned scheme, the limiting mechanism includes a first insertion hole, which is opened on one side of the frame. An L-shaped rod is slidably connected in the first insertion hole. The end of the L-shaped rod that contacts the material discharge module is inclined. A sliding rod is welded to the other end of the L-shaped rod. A second insertion hole is opened through one side of each of the two material discharge frames. A stop bar is inserted into the second insertion hole. A sliding hole is opened on one side of the stop bar, and the sliding rod slides in the sliding hole. A first tension spring is fixed to the inner wall of one side of the L-shaped rod by bolts, and the other end of the first tension spring is fixed to the material discharge frame.

[0015] Furthermore, the discharge module includes a slide block, which is set between the inner walls of both sides of the frame via an electric slide table. The top of the slide block is detachably connected to two symmetrically distributed support rods by bolts, and the distance between the two support rods is greater than the total length of the fins on the finned tube. The top of the two support rods is provided with multiple evenly distributed limiting grooves.

[0016] Furthermore, the transfer module includes a slide plate, which is mounted between the inner walls of both sides of the frame via an electric slide. A hydraulic cylinder is bolted to the top of the slide plate, and a connecting plate is bolted to the piston end of the hydraulic cylinder through the slide plate. A guide frame is bolted to the bottom of the connecting plate. A bidirectional lead screw is rotatably connected between the inner walls of both sides of the guide frame, and clamps are threaded to both ends of the bidirectional lead screw. A motor is bolted to one outer wall of the guide frame, and the output shaft of the motor passes through the guide frame and is fixed to the bidirectional lead screw. Guide rods are bolted to the four corners of the top of the connecting plate, and one end of the guide rod passes through the slide plate and is slidably connected to the slide plate.

[0017] Furthermore, the adjustment module includes a hydraulic cylinder, which is bolted to the bottom inner wall of the frame. A first slide is bolted to the piston end of the hydraulic cylinder. A fixing rod is welded to one end of the first slide. A guide groove is formed through one side of the fixing rod, and a second slide is slidably connected in the guide groove. A threaded hole is formed on one side of the second slide, and a fixing screw is threaded into the threaded hole. A C-shaped frame is rotatably connected to the outer circumference of the fixing screw, and the C-shaped frame contacts the fixing rod. Two support plates are detachably connected to one side of both the first and second slides by bolts. Baffles are bolted to both ends of one side of the first slide. A notch is formed on one side of the baffle. An oblique opening is formed on the side of the baffle that contacts the pushing component, and the oblique opening communicates with the notch. A limit rod is bolted between the inner walls of both sides of the frame, and both the first and second slides slide on the outer circumference of the limit rod.

[0018] Furthermore, the welding module includes a guide rail, which is fixed to the top inner wall of the frame by bolts. A connecting seat is slidably connected to the bottom of the guide rail, and a laser welding head is fixed to the bottom of the connecting seat by bolts. A connecting plate is provided on one side of the laser welding head, and a servo motor is fixed to one side of the guide rail by bolts. The output shaft of the servo motor passes through the guide rail and is fixed to a threaded rod by a coupling, and the threaded rod is threadedly connected to the connecting seat.

[0019] Furthermore, the pushing component includes a fixing plate, which is fixed to the bottom inner wall of the frame by bolts. Two sliding openings are opened on one side of the fixing plate, and a connecting frame is slidably connected in the two sliding openings. A placement frame is welded to one side of the connecting frame, and a placement groove is opened on the top of the placement frame. Multiple evenly distributed arc-shaped elastic plates are welded to the inner walls on both sides of the placement groove. Two second tension springs are fixed to one side of the fixing plate by bolts, and the other end of the second tension springs is fixed to the connecting frame.

[0020] As a further embodiment of the present invention, a placement plate is rotatably connected between the inner walls of the two sides of the frame via a rotating shaft. One end of each rotating shaft passes through the frame and is fixed with a torsion spring by bolts, and the other end of the torsion spring is fixed to the frame. A receiving tray is fixed to one outer wall of the frame by bolts, and a sponge pad is adhered to one inner wall of the receiving tray.

[0021] A welding method for a finned heat exchanger includes the following steps:

[0022] S1: Place multiple finned tubes in the groove between two discharge racks. Under the action of gravity, the bottom finned tube will contact the stop bar.

[0023] S2: When the L-shaped rod contacts the support rod, the support rod will squeeze the L-shaped rod to move, thereby pulling the first tension spring to deform and generate tension. Then, the stop rod is pulled so that one end of the stop rod enters the second insertion hole, thereby detaching from the contact with the finned tube. The finned tube will fall into the limiting groove and the finned tube will be arranged.

[0024] S3: The electric slide table drives the slide block to move, and the other finned tubes fall into another limiting groove, thus completing the arrangement of the finned tubes. When there are also finned tubes in the last limiting groove, the L-shaped rod and the support rod disengage, and the first tension spring that was pulled and deformed returns to its original position, thereby driving the L-shaped rod and the stop rod to move, so that the stop rod blocks the finned tubes. In the subsequent movement of the slide block and finned tubes driven by the electric slide table, the finned tubes will not slip off.

[0025] S4: When the finned tube is transferred by the discharge module, the support plate on the second slide will be inserted between the finned tube and the slide block. The hydraulic cylinder will be activated, and the hydraulic cylinder will drive the support plate on the second slide to move, so that the support plate will drive the finned tube to disengage from the limit groove. Then the electric slide will drive the slide block to reset, and at the same time the hydraulic cylinder will drive the first slide to move to the second slide.

[0026] S5: During the slide seat reset process, the support rod will press the inclined surface, causing the L-shaped rod to move, and then the slide rod will slide in the sliding hole. When the slide seat is in the initial position, pull the stop rod so that one end of the stop rod can enter the second insertion hole, and the finned tube will fall into the limiting groove again for a new round of arrangement and transfer.

[0027] S6: When two sets of finned tubes are formed, the hydraulic cylinder will drive the finned tubes to the welding module. During this process, the baffle will be driven upward by the first slide. When the placement frame is at the notch, the baffle will disengage from the placement frame. At this time, the second tension spring, which is stretched and deformed, will pull the connecting frame and the placement frame to move, so that the frame is fitted on the outer circumference of the finned tube. The oblique opening on the baffle will cause the frame to slowly fit on the finned tube, and the upward movement of the finned tube will cause the frame to disengage from the placement frame.

[0028] S7: Start the servo motor and laser welding machine. The stepper motor drives the connecting plate to rotate, so that the laser welding head can perform ring welding to weld the frame and finned tube at the current position. The servo motor will drive the threaded rod to rotate, so that the connecting seat slides on the guide rail, thereby changing the position of the laser welding head, and thus welding the remaining finned tubes and frames in the same row. After welding one row, the positioning module will drive the finned tubes and frames to move, change the longitudinal position of the finned tubes and frames, and then weld the finned tubes and frames in another row, which can form a strong weld without manual welding.

[0029] S8: After the finned tube and frame are welded into a semi-finished product, the electric slide table will drive the slide plate to the semi-finished product position, start the hydraulic cylinder, and the hydraulic cylinder will drive the connecting plate to move, so that the connecting plate contacts the semi-finished product. Then start the motor, and the motor will drive the bidirectional lead screw to rotate, so that the two clamps move towards each other and clamp the semi-finished product. At this time, adjust the position of the adjustment module so that the semi-finished product is disengaged from the adjustment module, and use the electric slide table to drive the slide plate away from the welding module so that the adjustment module can be reset.

[0030] S9: When the semi-finished product is brought to the top of the placement plate by the transfer module, the semi-finished product is placed on the placement plate by the hydraulic cylinder. The clamping of the semi-finished product is released by the motor. Under the action of gravity, the semi-finished product will press the placement plate to rotate, and make the placement plate contact the receiving tray and the inner wall flush. The semi-finished product will slide onto the receiving tray and be cushioned by the sponge pad to prevent collision, making it easy for workers to pick up the semi-finished product for subsequent processing.

[0031] Beneficial effects

[0032] Compared with the prior art, the present invention provides a finned heat exchanger welding equipment and welding method, which has the following beneficial effects:

[0033] 1. This invention achieves automated welding of finned tubes and frames through the precise coordination of a feeding module, a storage module, a transfer module, a welding module, and a positioning module, thereby reducing the workload of workers and lowering the labor costs of the factory.

[0034] 2. This invention features a storage module. Workers place multiple finned tubes into the storage module one by one, positioning the finned tubes in a specific location away from the ground. This prevents external objects from easily touching the finned tubes, thus improving the protection of the finned tubes.

[0035] 3. This invention utilizes a welding module and a laser welding head to achieve high-precision control, ensuring the uniformity and consistency of the welding, reducing the heat-affected zone, improving mechanical performance and service life, and eliminating the adverse effects of worker welding errors, thereby improving the finished product quality of the heat exchanger.

[0036] 4. The present invention uses a material discharge module to uniformly arrange finned tubes and transfer the arranged finned tubes. During the transfer process, the finned tubes will not be displaced, eliminating the need for secondary position adjustment and improving the accuracy of welding.

[0037] 5. The present invention can transfer the semi-finished products formed by welding finned tubes and frames through the transfer module, without waiting for workers to move them, which facilitates the resetting of the adjustment module, so that the entire equipment can continue to operate and improve the welding efficiency of semi-finished products. Attached Figure Description

[0038] Figure 1This is a schematic diagram of the upper three-dimensional structure of a finned heat exchanger welding device proposed in this invention;

[0039] Figure 2 This is a schematic diagram of the lower three-dimensional structure of a finned heat exchanger welding device proposed in this invention.

[0040] Figure 3 This is an enlarged structural diagram of the discharge module of a finned heat exchanger welding equipment proposed in this invention;

[0041] Figure 4 This is an enlarged structural diagram of the material storage module of a finned heat exchanger welding equipment proposed in this invention;

[0042] Figure 5 This is a partial cross-sectional view of a finned heat exchanger welding device proposed in this invention.

[0043] Figure 6 This is an enlarged structural schematic diagram of the push assembly of a finned heat exchanger welding device proposed in this invention;

[0044] Figure 7 This is an enlarged structural schematic diagram of the transfer module of a finned heat exchanger welding equipment proposed in this invention;

[0045] Figure 8 This is an enlarged structural diagram of the welding module of a finned heat exchanger welding equipment proposed in this invention;

[0046] Figure 9 This is an enlarged structural schematic diagram of the adjustment module of the finned heat exchanger welding equipment proposed in this invention;

[0047] Figure 10 This invention proposes a welding device for finned heat exchangers. Figure 1 A magnified structural diagram of part A;

[0048] Figure 11 This invention proposes a welding device for finned heat exchangers. Figure 1 A magnified schematic diagram of the baffle structure.

[0049] In the diagram: 1. Frame; 2. Discharge module; 201. Slide; 202. Support rod; 203. Limiting groove; 3. Storage module; 301. Discharge rack; 302. L-shaped rod; 303. First tension spring; 304. First insertion hole; 305. Second insertion hole; 306. Stop bar; 307. Sliding hole; 308. Sliding rod; 309. Inclined surface; 4. Fixing plate; 5. Transfer module; 501. Slide plate; 502. Guide rod; 503. Hydraulic cylinder; 504. Connecting plate; 505. Guide frame; 506. Clamp; 507. Two-way lead screw; 508. Motor; 6. Welding module; 601. Guide rail; 6 02. Threaded rod; 603. Servo motor; 604. Connecting seat; 605. Connecting plate; 606. Laser welding head; 607. Ring frame; 7. Receiving tray; 8. Sponge pad; 9. Adjustment module; 901. Hydraulic cylinder; 902. First slide; 903. Fixing rod; 904. Guide groove; 905. C-shaped frame; 906. Second slide; 907. Support plate; 908. Notch; 909. Baffle; 910. Limiting rod; 10. Placement plate; 11. Placement frame; 12. Placement groove; 13. Arc-shaped elastic plate; 14. Connecting frame; 15. Second tension spring; 16. Rotating shaft; 17. Torsion spring. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0051] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] Reference Figures 1-11 A finned heat exchanger welding device and welding method are disclosed, comprising a frame 1. One end of the frame 1 is equipped with a storage module 3 for storing finned tubes. The bottom of the storage module 3 is equipped with a discharge module 2 for arranging and transferring the finned tubes. One side of the storage module 3 is equipped with a transfer module 5 for discharging semi-finished products (finned tubes welded to a frame). Both the transfer module 5 and the discharge module 2 are connected to the frame 1 via an electric slide. The other end of the frame 1 is equipped with an adjustment module 9 for adjusting the position of the finned tubes and the frame. Above the adjustment module 9 is a welding module 6 for welding the finned tubes and the frame. Both sides of the frame 1 are equipped with pushing components for placing the frame. In use, the worker first places multiple finned tubes one by one into the storage module 3, then places the finned tubes in a specific position... The finned tubes are positioned far from the ground to prevent external objects from hitting them, thus improving their protection. The finned tubes are then arranged by the discharge module 2 and transferred to the positioning module 9. The positioning module 9 removes the arranged finned tubes from the discharge module 2 and positions them in layers. The positioning module 9 then carries the layered finned tubes to the welding module 6. As the positioning module 9 moves the finned tubes, the pushing component places the frame onto the grouped finned tubes. After the finned tubes and frame move to the welding module 6, the welding module 6 welds them. The welding is automatic and requires no worker assistance. After welding, the semi-finished product is transferred by the transfer module 5, thus resetting the positioning module 9.

[0054] In order to arrange the finned tubes, the material storage module 3 of the present invention includes two discharge racks 301. Both discharge racks 301 are fixed to the bottom inner wall of the frame 1 by bolts, and the two discharge racks 301 are symmetrically distributed. Each of the opposite sides of the two discharge racks 301 is provided with a limiting mechanism to block the discharge of the finned tubes. When the finned tubes are placed in the groove between the two discharge racks 301, under the action of gravity, the bottom finned tube will contact the limiting mechanism, releasing the limiting mechanism from blocking the finned tubes, and the finned tubes will fall onto the discharge module 2.

[0055] The limiting mechanism includes a first insertion hole 304, which is located on one side of the frame 1. An L-shaped rod 302 is slidably connected within the first insertion hole 304. One end of the L-shaped rod 302 that contacts the discharge module 2 is a bevel 309, and a sliding rod 308 is welded to the other end of the L-shaped rod 302. A second insertion hole 305 is provided through one side of each of the two discharge racks 301. A stop rod 306 is inserted into the second insertion hole 305. A sliding hole 307 is provided on one side of the stop rod 306, and the sliding rod 308 slides within the sliding hole 307. A first tension spring 303 is fixed to the inner wall of one side of the L-shaped rod 302 by bolts. The other end of 3 is fixed to the discharge rack 301. When the discharge module 2 contacts the L-shaped rod 302, the stop rod 306 is pulled to move, so that one end of the slide rod 308 contacts the inner wall of one side of the slide hole 307. At this time, one end of the stop rod 306 enters the second insertion hole 305 and then disengages from the finned tube. The finned tube can fall on the discharge module 2. When the L-shaped rod 302 disengages from the discharge module 2, the first tension spring 303, which was pulled and deformed, is reset, thereby driving the L-shaped rod 302 and the stop rod 306 to move, thereby blocking the finned tube with the stop rod 306, thus limiting the finned tube and improving the fixing effect of the device.

[0056] To arrange and transfer finned tubes, the discharge module 2 of this invention includes a slide block 201. The slide block 201 is set between the inner walls of both sides of the frame 1 via an electric slide table. The top of the slide block 201 is detachably connected to two symmetrically distributed support rods 202 by bolts, and the distance between the two support rods 202 is greater than the total length of the fins on the finned tubes. The top of the two support rods 202 is provided with multiple evenly distributed limiting grooves 203. When the stop rod 306 is not in contact with the finned tube, the finned tube will fall into one of the limiting grooves 203. The electric slide table drives the slide block 201 to move, so that the other finned tubes fall into the other limiting groove 203, thereby completing the arrangement of the finned tubes. After the arrangement is completed, the electric slide table drives the slide block 201 and the finned tubes to the adjustment module 9 for subsequent processing.

[0057] To separate the arranged finned tubes into layers, the adjustment module 9 of this invention includes a hydraulic cylinder 901. The hydraulic cylinder 901 is fixed to the bottom inner wall of the frame 1 by bolts. A first slide 902 is fixed to the piston end of the hydraulic cylinder 901 by bolts. A fixing rod 903 is welded to one end of the first slide 902. A guide groove 904 is formed through one side of the fixing rod 903. A second slide 906 is slidably connected in the guide groove 904. A threaded hole is formed on one side of the second slide 906. A fixing screw is threaded into the threaded hole. The outer circumference of the fixing screw is... A U-shaped frame 905 is rotatably connected to the wall, and the U-shaped frame 905 contacts the fixed rod 903. Two support plates 907 are detachably connected to one side of both the first slide 902 and the second slide 906 via bolts. Different sizes of support plates 907 can be replaced. By rotating the fixing screws, the U-shaped frame 905 is disengaged from one side of the fixed rod 903, allowing the second slide 906 to slide within the guide groove 904. This allows adjustment of the distance between the upper support plates 907 of the first slide 902 and the second slide 906, as needed. Both ends of one side of the first slide 902 are bolted with baffles 909. A notch 908 is provided on one side of the baffle 909, and a bevel is provided on the side of the baffle 909 that contacts the pushing component. The bevel is connected to the notch 908. Limiting rods 910 are bolted between the inner walls of both sides of the frame 1. Both the first slide 902 and the second slide 906 slide on the outer circumference of the limiting rods 910. When the finned tube is transferred by the discharge module 2, the support plate 907 on the second slide 906 inserts between the finned tube and the slide block 201, thus starting... The hydraulic cylinder 901 moves the support plate 907 on the second slide 906, causing the support plate 907 to disengage the finned tubes from the discharge module 2. After disengagement, the discharge module 2 resets and transfers another set of finned tubes. In the same way, the support plate 907 on the first slide 902 disengages the finned tubes from the discharge module 2 and resets the discharge module 2. The hydraulic cylinder 901 continues to start and transports the two sets of arranged finned tubes to the welding module 6. During the transfer process, the pushing component will put the frame on the finned tubes.

[0058] To weld the finned tubes to the frame, the welding module 6 of this invention includes a guide rail 601, which is bolted to the top inner wall of the frame 1. A connecting seat 604 is slidably connected to the bottom of the guide rail 601, and a ring-shaped frame 607 is fixedly connected to the bottom of the connecting seat 604. A connecting plate 605 is rotatably connected to one side of the ring-shaped frame 607, and a laser welding head 606 is provided on one side of the connecting plate 605. The laser welding head 606 can rotate on the connecting plate 605, changing its welding angle to accommodate finned tubes of different lengths. A stepper motor is bolted to the inner wall of one side of the ring-shaped frame 607, and the output shaft of the stepper motor is fixed to the connecting plate 605. The laser welding head 606 is used in conjunction with a welding machine of model DF-NL600W. A servo motor is bolted to one side of the guide rail 601. 603. The output shaft of the servo motor 603 passes through the guide rail 601 and is fixed to the threaded rod 602 via a coupling. The threaded rod 602 is threadedly connected to the connecting seat 604. When the frame and finned tubes are transported to the welding module 6, the servo motor 603 and the laser welding machine are started. The laser welding head 606 can weld the frame and finned tubes at the current position. The servo motor 603 will drive the threaded rod 602 to rotate, thereby causing the connecting seat 604 to slide on the guide rail 601, thus changing the position of the laser welding head 606, thereby welding the remaining finned tubes and frames in the same row. After welding one row, the positioning module 9 will drive the finned tubes and frames to move, changing the longitudinal position of the finned tubes and frames, thereby welding the finned tubes and frames in another row. This can form a strong weld and eliminate the need for manual welding, improving the quality of the finished heat exchanger.

[0059] To fit the frame onto the finned tube, the pushing assembly of this invention includes a fixing plate 4, which is bolted to the bottom inner wall of the frame 1. Two sliding openings are formed on one side of the fixing plate 4, and a connecting frame 14 is slidably connected within these openings. A placement frame 11 is welded to one side of the connecting frame 14. A placement groove 12 is formed on the top of the placement frame 11, and multiple evenly distributed arc-shaped elastic plates 13 are welded to the inner walls of both sides of the placement groove 12. The arc-shaped elastic plates 13 are made of elastic metal material, preferably spring steel. Two second tension springs 15 are bolted to one side of the fixing plate 4, and the second tension springs 15... The other end is fixed to the connecting frame 14. The frame is placed in the placement slot 12 and the frame is further fixed by the arc-shaped elastic plate 13. When the placement frame 11 is located at the notch 908, the baffle 909 is disengaged from the placement frame 11. At this time, the second tension spring 15, which is stretched and deformed, will pull the connecting frame 14 and the placement frame 11 to move, so that the frame is fitted on the outer circumference of the finned tube. The oblique opening on the baffle 909 will cause the frame to slowly fit on the finned tube, and the upward movement of the finned tube will cause the frame to disengage from the placement frame 11. The oblique opening on the baffle 909 will also press the placement frame 11 to reset when the baffle 909 resets.

[0060] To detach the semi-finished product from the equipment, the transfer module 5 of this invention includes a slide plate 501. The slide plate 501 is mounted between the inner walls of both sides of the frame 1 via an electric slide table. A hydraulic cylinder 503 is bolted to the top of the slide plate 501. The piston end of the hydraulic cylinder 503 passes through the slide plate 501 and is bolted to a connecting plate 504. A guide frame 505 is bolted to the bottom of the connecting plate 504. A bidirectional lead screw 507 is rotatably connected between the inner walls of both sides of the guide frame 505. Both ends of the bidirectional lead screw 507 are threaded to clamps 506. A motor 508 is bolted to one outer wall of the guide frame 505, and the output shaft of the motor 508 passes through the guide frame 505 and is fixed to the bidirectional lead screw 507. The connecting plate 501... Guide rods 502 are fixed to the top four corners of 4 with bolts, and one end of the guide rod 502 passes through the slide plate 501 and is slidably connected to the slide plate 501. After the finned tube and the frame are welded into a semi-finished product, the electric slide table will drive the slide plate 501 to move to the semi-finished product. The hydraulic cylinder 503 will be activated, and the hydraulic cylinder 503 will drive the connecting plate 504 to move, so that the connecting plate 504 contacts the semi-finished product. Then the motor 508 will be activated, and the motor 508 will drive the bidirectional lead screw 507 to rotate, so that the two clamps 506 move towards each other and clamp the semi-finished product. At this time, the position of the adjustment module 9 will be adjusted so that the semi-finished product is disengaged from the adjustment module 9. The electric slide table will then drive the slide plate 501 to disengage from the welding module 6, so that the adjustment module 9 can be reset.

[0061] The frame 1 has a placement plate 10 rotatably connected between its two inner walls via a rotating shaft 16. One end of each rotating shaft 16 passes through the frame 1 and is fixed with a torsion spring 17 by bolts. The other end of the torsion spring 17 is also fixed to the frame 1. A receiving tray 7 is fixed to one outer wall of the frame 1 by bolts. A sponge pad 8 is adhered to one inner wall of the receiving tray 7. After the semi-finished product is detached by the transfer module 5, it is carried to the top of the placement plate 10. The hydraulic cylinder 503 places the semi-finished product on the placement plate 10. The motor 508 releases the clamp on the semi-finished product. Under the action of gravity, the semi-finished product will press the placement plate 10 to rotate, and the placement plate 10 will contact the receiving tray 7 and be flush with its inner wall. The semi-finished product will slide onto the receiving tray 7 and be cushioned and protected from collision by the sponge pad 8, making it easy for workers to pick up the semi-finished product for subsequent processing.

[0062] The present invention is used in the following steps:

[0063] S1: Place multiple finned tubes in the groove between two discharge racks 301. Under the action of gravity, the bottom finned tube will contact the stop bar 306.

[0064] S2: When the L-shaped rod 302 contacts the support rod 202, the support rod 202 will squeeze the L-shaped rod 302 to move, thereby pulling the first tension spring 303 to deform and generate tension, and then pulling the stop rod 306, so that one end of the stop rod 306 can enter the second insertion hole 305, thereby detaching from the contact with the finned tube, and the finned tube will fall into the limiting groove 203 to arrange the finned tube;

[0065] S3: The electric slide table drives the slide block 201 to move, and the other finned tubes fall into another limiting groove 203, thereby completing the arrangement of the finned tubes. When there are also finned tubes in the last limiting groove 203, the L-shaped rod 302 disengages from the support rod 202, and the first tension spring 303, which was pulled and deformed, returns to its original position, thereby driving the L-shaped rod 302 and the stop rod 306 to move, so that the stop rod 306 blocks the finned tubes. In the subsequent movement of the electric slide table driving the slide block 201 and the finned tubes, the finned tubes will not slip off.

[0066] S4: When the finned tube is transferred by the discharge module 2, the support plate 907 on the second slide 906 will be inserted between the finned tube and the slide block 201. The hydraulic cylinder 901 will be activated, and the hydraulic cylinder 901 will drive the support plate 907 on the second slide 906 to move, so that the support plate 907 will drive the finned tube to disengage from the limit groove 203. Then the electric slide table will drive the slide block 201 to reset, and at the same time the hydraulic cylinder 901 will drive the first slide 902 to move to the second slide 906.

[0067] S5: During the reset process of slide 201, support rod 202 will press the inclined surface 309, causing L-shaped rod 302 to move, and then slide rod 308 to slide in sliding hole 307. When slide 201 is in the initial position, pull stop rod 306, so that one end of stop rod 306 can enter the second insertion hole 305, and finned tube will fall into limit groove 203 again for a new round of arrangement and transfer.

[0068] S6: When two sets of finned tubes are formed, the hydraulic cylinder 901 will drive the finned tubes to the welding module 6. During this process, the baffle 909 will be driven upward by the first slide 902. When the placement frame 11 is located at the notch 908, the baffle 909 will disengage from the placement frame 11. At this time, the second tension spring 15, which is stretched and deformed, will pull the connecting frame 14 and the placement frame 11 to move, so that the frame is fitted on the outer circumference of the finned tube. The oblique opening on the baffle 909 will cause the frame to slowly fit on the finned tube, and the upward movement of the finned tube will cause the frame to disengage from the placement frame 11.

[0069] S7: Start the servo motor 603 and the laser welding machine. The stepper motor drives the connecting plate 605 to rotate, thereby causing the laser welding head 606 to perform ring welding, welding the frame and finned tube at the current position. The servo motor 603 will drive the threaded rod 602 to rotate, thereby causing the connecting seat 604 to slide on the guide rail 601, thereby changing the position of the laser welding head 606, and thus welding the remaining finned tubes and frames in the same row. After welding one row, the positioning module 9 will drive the finned tubes and frames to move, changing the longitudinal position of the finned tubes and frames, and then welding the finned tubes and frames in another row, which can form a strong weld without manual welding.

[0070] S8: After the finned tube and frame are welded into a semi-finished product, the electric slide table will drive the slide plate 501 to move to the semi-finished product, start the hydraulic cylinder 503, and the hydraulic cylinder 503 will drive the connecting plate 504 to move, so that the connecting plate 504 contacts the semi-finished product. Then start the motor 508, and the motor 508 drives the bidirectional lead screw 507 to rotate, so that the two clamps 506 move towards each other and clamp the semi-finished product. At this time, adjust the position of the adjustment module 9 so that the semi-finished product is disengaged from the adjustment module 9, and use the electric slide table to drive the slide plate 501 to disengage from the welding module 6 so that the adjustment module 9 can be reset.

[0071] S9: When the semi-finished product is brought to the top of the placement plate 10 by the transfer module 5, the semi-finished product is placed on the placement plate 10 by the hydraulic cylinder 503. The clamping of the semi-finished product is released by the motor 508. Under the action of gravity, the semi-finished product will press the placement plate 10 to rotate, and make the placement plate 10 contact the receiving tray 7 and flush with the inner wall. The semi-finished product will slide onto the receiving tray 7 and be cushioned and prevented from collision by the sponge pad 8, making it easy for workers to pick up the semi-finished product for subsequent processing.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A finned heat exchanger welding device, comprising a frame (1), characterized in that, One end of the frame (1) is provided with a storage module (3) for storing finned tubes. The bottom of the storage module (3) is provided with a discharge module (2) for arranging and transferring finned tubes. One side of the storage module (3) is provided with a transfer module (5) for discharging semi-finished products after the finned tubes are fixedly connected to the frame. The transfer module (5) and the discharge module (2) are both connected to the frame (1) through an electric slide table. The other end of the frame (1) is provided with an adjustment module (9) for adjusting the position of the finned tubes and the frame. Above the adjustment module (9) is a welding module (6) for fixing the finned tubes and the frame. Both sides of the frame (1) are provided with a push assembly for placing the frame. The adjustment module (9) includes a hydraulic cylinder (901), which is fixedly connected to the bottom inner wall of the frame (1). The piston end of the hydraulic cylinder (901) is fixedly connected to a first slide (902). One end of the first slide (902) is fixedly connected to a fixing rod (903). A guide groove (904) is opened through one side of the fixing rod (903). A second slide (906) is slidably connected in the guide groove (904). Two support plates (907) are detachably connected to one side of both the first slide (902) and the second slide (906) by bolts. Both ends of one side of the first slide (902) are fixedly connected to baffles (909). A notch (908) is opened on one side of the baffle (909). An oblique opening is opened on the side of the baffle (909) that contacts the pushing component, and the oblique opening is connected to the notch (908). The pushing component includes a fixed plate (4), which is fixedly connected to the bottom inner wall of the frame (1). Two sliding openings are provided on one side of the fixed plate (4), and a connecting frame (14) is slidably connected in the two sliding openings. A placement frame (11) is fixedly connected to one side of the connecting frame (14). A placement groove (12) is provided on the top of the placement frame (11). Multiple evenly distributed arc-shaped elastic plates (13) are fixedly connected to the inner walls on both sides of the placement groove (12). Two second tension springs (15) are fixedly connected to one side of the fixed plate (4), and the other end of the second tension springs (15) is fixed to the connecting frame (14).

2. The finned heat exchanger welding equipment according to claim 1, characterized in that, The storage module (3) includes two feed racks (301). Both feed racks (301) are fixedly connected to the bottom inner wall of the frame (1), and the two feed racks (301) are symmetrically distributed. The finned tube is placed in the groove between the two feed racks (301). The opposite sides of the two feed racks (301) are provided with a limiting mechanism to block the finned tube from being fed.

3. The finned heat exchanger welding equipment according to claim 2, characterized in that, The limiting mechanism includes a first insertion hole (304), which is located on one side of the frame (1). An L-shaped rod (302) is slidably connected in the first insertion hole (304). One end of the L-shaped rod (302) that contacts the material discharge module (2) is a slope (309). The other end of the L-shaped rod (302) is fixedly connected to a slide rod (308). A second insertion hole (305) is provided through one side of each of the two material discharge racks (301). A stop rod (306) is inserted into the second insertion hole (305). A sliding hole (307) is provided on one side of the stop rod (306), and the slide rod (308) slides in the sliding hole (307). A first tension spring (303) is fixedly connected to the inner wall of one side of the L-shaped rod (302), and the other end of the first tension spring (303) is fixed to the material discharge rack (301).

4. The finned heat exchanger welding equipment according to claim 1, characterized in that, The discharge module (2) includes a slide (201), which is set between the inner walls of the two sides of the frame (1) by an electric slide table. The top of the slide (201) is detachably connected to two symmetrically distributed support rods (202) by bolts, and the distance between the two support rods (202) is greater than the total length of the fins on the finned tube. The top of the two support rods (202) is provided with multiple evenly distributed limiting grooves (203).

5. The finned heat exchanger welding equipment according to claim 1, characterized in that, The transfer module (5) includes a slide plate (501). The slide plate (501) is set between the inner walls of the two sides of the frame (1) by an electric slide table. A hydraulic cylinder (503) is fixed to the top of the slide plate (501) by bolts. The piston end of the hydraulic cylinder (503) passes through the slide plate (501) and is fixedly connected to a connecting plate (504). A guide frame (505) is fixedly connected to the bottom of the connecting plate (504). A two-way screw (507) is rotatably connected between the inner walls of the two sides of the guide frame (505). Both ends of the two-way screw (507) are threadedly connected to a clamp (506). A motor (508) is fixedly connected to the outer wall of one side of the guide frame (505). The output shaft of the motor (508) passes through the guide frame (505) and is fixed to the two-way screw (507). Guide rods (502) are fixedly connected to the four corners of the top of the connecting plate (504). One end of the guide rod (502) passes through the slide plate (501) and is slidably connected to the slide plate (501).

6. The finned heat exchanger welding equipment according to claim 1, characterized in that, The second slide (906) has a threaded hole on one side, and a fixing screw is threaded into the threaded hole. A C-shaped frame (905) is rotatably connected to the outer circumference of the fixing screw, and the C-shaped frame (905) is in contact with the fixing rod (903). A limiting rod (910) is fixedly connected between the inner walls of the two sides of the frame (1), and both the first slide (902) and the second slide (906) slide on the outer circumference of the limiting rod (910).

7. The finned heat exchanger welding equipment according to claim 1, characterized in that, The welding module (6) includes a guide rail (601), which is fixedly connected to the top inner wall of the frame (1). A connecting seat (604) is slidably connected to the bottom of the guide rail (601). A ring frame (607) is fixedly connected to the bottom of the connecting seat (604). A connecting plate (605) is rotatably connected to one side of the ring frame (607). A laser welding head (606) is provided on one side of the connecting plate (605). A stepper motor is fixed to the inner wall of one side of the ring frame (607) by bolts. The output shaft of the stepper motor is fixed to the connecting plate (605). A servo motor (603) is fixedly connected to one side of the guide rail (601). The output shaft of the servo motor (603) passes through the guide rail (601) and is fixed to a threaded rod (602) by a coupling. The threaded rod (602) is threadedly connected to the connecting seat (604).

8. The finned heat exchanger welding equipment according to claim 1, characterized in that, The inner walls of the two sides of the frame (1) are rotatably connected to a placement plate (10) via a rotating shaft (16). One end of each rotating shaft (16) passes through the frame (1) and is fixedly connected to a torsion spring (17). The other end of the torsion spring (17) is fixed to the frame (1). A receiving tray (7) is fixedly connected to one side of the outer wall of the frame (1), and a sponge pad (8) is fixedly connected to one side of the inner wall of the receiving tray (7).

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