Heat exchanger welding equipment

Abstract

The invention relates to the technical field of welding, and discloses heat exchanger welding equipment which comprises a welding table, a sliding plate table is arranged at the top of the welding table and used for placing a tube plate and driving the tube plate to move, an electric sliding rail is fixedly installed at the top of the welding table, and an electric sliding block is slidably connected to the inner wall of the electric sliding rail; a positioning assembly for clamping a pipe fitting is arranged on one side of the lifting table, a tension assembly for driving the sliding plate table to slide along the surface of the welding table is arranged on one side of the electric sliding block, and a supplementing assembly for automatically supplementing the pipe fitting to the positioning assembly is arranged above the sliding plate table. The tension assembly is started synchronously, the sliding plate table moves forwards by a certain distance along the surface of the welding table, the next set of round holes of the pipe plate are accurately aligned with the positioning assembly, in the moving process, the supplementing assembly is triggered to convey new pipe fittings to the clamping position of the positioning assembly, and it is ensured that the pipe fittings are automatically aligned with the round holes in the subsequent welding process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding, and particularly relates to a heat exchanger welding device. BACKGROUND

[0002] The plate heat exchanger is a new type of high-efficiency heat exchanger which is formed by a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various sheets, and heat exchange is performed through the sheets. The plate heat exchanger is an ideal device for heat exchange between liquid-liquid and liquid-vapor. It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small floor area, convenient installation and cleaning, wide application, long service life and the like.

[0003] In the heat exchanger welding process, the welding of the tube plate and the pipe fitting is an essential link. The tube plate is a core support component of the heat exchanger, and the pipe fitting (such as a heat exchange pipe) needs to be fixed on the tube plate through welding to form a stable flow channel structure. The pipe fitting is often welded on the two side edge positions of the tube plate, and multiple pipe fittings need to be welded on the same tube plate.

[0004] Since multiple pipe fittings need to be welded on the two side edge positions of the same tube plate, in the traditional welding method, the position precision of the pipe fitting and the tube plate circular hole is low when adjusted manually, which easily leads to poor weld quality. When welding different points, the tube plate and the pipe fitting need to be frequently moved and supplemented manually, which not only reduces the efficiency, but also increases the operation error.

[0005] Therefore, the application provides a heat exchanger welding device. SUMMARY

[0006] In order to make up for the deficiencies of the prior art: solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the application to solve the technical problems is: the heat exchanger welding device comprises a welding table, a sliding plate table is arranged on the top of the welding table, the sliding plate table is used for placing the tube plate and driving the tube plate to move, an electric sliding rail is fixedly installed on the top of the welding table, an electric sliding block is slidably connected to the inner wall of the electric sliding rail, a lifting table is fixedly connected to one side of the electric sliding block, a control panel is fixedly connected to the bottom of the lifting table, a plurality of spot welding heads are fixedly connected to one side of the control panel, a positioning assembly for clamping the pipe fitting is arranged on one side of the lifting table, a tension assembly for driving the sliding plate table to slide along the surface of the welding table is arranged on one side of the electric sliding block, and a supplement assembly for automatically supplementing the pipe fitting to the positioning assembly is arranged above the sliding plate table.

[0008] Preferably, the positioning assembly comprises two sets of hinged seats, each set having two hinged seats, which are fixedly connected to the sides of the lifting platform, and each hinged seat has an inner wall hinged with an expansion clamp plate, which is divided into a straight section, an arc section and a turning section, the inner wall of the arc section is fixedly connected with a friction piece, one side of the straight section is fixedly connected with a torsional spring, and the end of the torsional spring away from the expansion clamp plate is fixedly connected with one side of the hinged seat.

[0009] Preferably, the top of the lifting platform is fixedly provided with a telescopic rod, the bottom end of the telescopic rod is fixedly connected with a connecting plate, the bottom end of the connecting plate is fixedly connected with V-shaped plates in a symmetrical manner, and the outer walls of the V-shaped plates are respectively attached to the straight sections of the two expansion clamp plates.

[0010] Preferably, the tension assembly comprises two rope winding wheels, a rotating rod is fixedly connected between the inner walls of the two rope winding wheels, the outer wall of the rotating rod is symmetrically rotatably connected with a clamping piece, the clamping piece is fixedly installed on the top of the welding platform, the outer walls of the rope winding wheels are respectively wound with a cable, and one end of the cable is fixedly connected with one side of the sliding plate table.

[0011] Preferably, the top of the electric sliding block is fixedly connected with a connecting frame, the outer wall of the rotating rod is fixedly connected with a ratchet wheel, the lower portion of the connecting frame is fixedly connected with a fixed plate, one end of the fixed plate is provided with a plurality of trapezoidal blocks, a spring one is fixedly connected between the plurality of trapezoidal blocks and the fixed plate.

[0012] Preferably, the top surface of the welding platform is symmetrically provided with a sliding groove, the bottom of the sliding plate table is fixedly connected with a plurality of pulleys, the pulleys are slidably connected with the sliding groove, one end of the sliding plate table is provided with a counterweight assembly for resetting the sliding plate table, and the upper portion of the ratchet wheel is provided with a detent assembly for limiting the ratchet wheel.

[0013] Preferably, the detent assembly comprises a detent block, the detent block is located in one of the tooth grooves of the ratchet wheel, the top of the detent block is fixedly connected with a limiting column one, the outer wall of the limiting column one is inserted with an inner connecting plate, the outer portion of the limiting column one is provided with a spring two, and the two ends of the spring two are respectively fixedly connected with the top of the detent block and the bottom of the inner connecting plate.

[0014] Preferably, the side of the electric sliding rail is fixedly connected with an inner groove seat, one end of the inner connecting plate is slidably connected with the inner wall of the inner groove seat, the top of the inner connecting plate is fixedly connected with a limiting column two, the outer portion of the limiting column two is provided with a spring three, the two ends of the spring three are respectively fixedly connected with the top of the inner connecting plate and the inner wall of the inner groove seat, the two sides of the inner connecting plate are fixedly connected with extrusion blocks one, and one side of the sliding plate table is fixedly connected with an extrusion block two.

[0015] Preferably, the counterweight assembly comprises a guide wheel, the guide wheel is fixedly connected to one side of the welding platform, the side of the sliding plate table is fixedly connected with a connecting rope, and the bottom of the connecting rope is fixedly connected with a counterweight block.

[0016] Preferably, the supplementary assembly comprises two receiving plates fixedly connected to two sides of the welding table respectively, a moving frame fixedly connected above the slide plate table, and a plurality of clamping rings fixedly connected to one side of the moving frame, the distance between each clamping ring being the same as the distance between the round holes on the tube plate.

[0017] The beneficial effects of the present application are as follows: 1. The heat exchanger welding equipment provided by the present application can accurately clamp the pipe by the positioning assembly, so that the pipe can be accurately inserted into the round hole on the tube plate after being lowered, high-precision automatic welding is realized, the quality of the weld is ensured, the outer wall end of the pipe is tightly wrapped and clamped by the two expansion clamping plates, and the friction between the inner wall of the expansion clamping plate and the pipe is increased by the friction member, so that the pipe is prevented from falling off accidentally.

[0018] 2. The heat exchanger welding equipment provided by the present application, when the positioning assembly is reset by the lifting table, the tension assembly is started synchronously, the slide plate table moves forward along the surface of the welding table by a distance, so that the next group of round holes on the tube plate are accurately aligned with the positioning assembly, in the moving process, the supplementary assembly is triggered to deliver a new pipe to the clamping position of the positioning assembly, so that the pipe and the round hole are automatically aligned during subsequent welding, automatic switching of the welding position is realized, the continuous production efficiency is improved, the manual adjustment time is reduced, the operation error is reduced, the positioning assembly and the feeding assembly are cooperated, the welding process is compact and efficient, and the large-scale production demand is met. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is the overall perspective view of the present application; Figure 2 is a structure schematic view of the clamping ring in the present application; Figure 3 is a structure schematic view of the slide plate table in the present application; Figure 4 is a structure schematic view of the electric slide rail in the present application; Figure 5 is a structure schematic view of the V-shaped plate in the present application; Figure 6 is a structure schematic view of the expansion clamping plate in the present application; Figure 7 is a structure schematic view of the cable in the present application; Figure 8 is a structure schematic view of the rope winding wheel in the present application; Figure 9 is a structure schematic view of the ratchet wheel in the present application; Figure 10 is a structure schematic view of the inner receiving plate in the present application.

[0021] In the figure: 1, welding table; 2, sliding plate table; 3, lifting table; 4, control panel; 5, spot welding head; 6, electric sliding block; 7, electric sliding rail; 8, hinged seat; 9, expansion clamp plate; 10, friction piece; 11, torsional spring; 12, V-shaped plate; 13, connecting plate; 14, telescopic rod; 15, rope winding wheel; 16, cable; 17, pulley; 18, sliding groove; 19, rotating rod; 20, clamping piece; 21, ratchet; 22, connecting frame; 23, fixed plate; 24, trapezoidal block; 25, spring one; 26, clamping block; 27, spring two; 28, inner connecting plate; 29, limiting column one; 30, inner groove seat; 31, spring three; 32, limiting column two; 33, extrusion block one; 34, extrusion block two; 35, connecting rope; 36, counterweight block; 37, guide wheel; 38, moving frame; 39, clamping ring; 40, receiving plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0023] As shown in Figures 1 to 10 , the present application provides a technical solution: a heat exchanger welding equipment, comprising a welding table 1, the top of the welding table 1 is provided with a sliding plate table 2, the sliding plate table 2 is used for placing a tube plate and driving it to move, the top of the welding table 1 is fixedly installed with an electric sliding rail 7, the inner wall of the electric sliding rail 7 is slidably connected with an electric sliding block 6, one side of the electric sliding block 6 is fixedly connected with a lifting table 3, the bottom of the lifting table 3 is fixedly connected with a control panel 4, one side of the control panel 4 is fixedly connected with a plurality of spot welding heads 5, one side of the lifting table 3 is provided with a positioning assembly for clamping a pipe fitting, one side of the electric sliding block 6 is provided with a tension assembly for driving the sliding plate table 2 to slide along the surface of the welding table 1, the upper side of the sliding plate table 2 is provided with a replenishing assembly for automatically replenishing pipe fittings to the positioning assembly.

[0024] When working: the present equipment is suitable for simultaneously welding a plurality of pipe fittings on the same heat exchanger tube plate to form a stable flow channel structure; in specific use, the tube plate is placed on the upper surface of the sliding plate table 2, a plurality of circular holes for inserting pipe fittings are pre-set at the edge positions of the two sides, a plurality of pipe fittings to be welded are pre-stored at the designated position of the equipment through the replenishing assembly, and the automatic replenishment feasibility is ensured; During welding, current is applied to the electric slide rail 7, allowing the electric slider 6 to slide freely vertically up and down along the inner wall of the slide rail 7. As the electric slider 6 slides downwards, it moves the positioning assembly downwards via the lifting platform 3. The positioning assembly first moves a pair of pipe fittings downwards, inserting them into the first set of circular grooves on both sides of the pipe fittings. The welding structure, consisting of the control board 4 and the spot welding head 5, moves downwards along with the lifting platform 3. When the first pair of pipe fittings is fully inserted into the first set of circular holes in the tube sheet, the spot welding head 5 is aligned with the contact point between the pipe fitting and the circular hole. The control board 4 triggers the spot welding head 5 to complete the current weld point, achieving a fixed connection between the pipe fitting and the tube sheet. After the work is completed, the electric slider 6 rises and resets along the inner wall of the electric slide rail 7, driving the entire positioning assembly forward. During the reset process, the sliding plate 2 moves forward a certain distance along the surface of the welding table 1 via the tension component. After the movement is completed, the sliding plate 2 will move the second set of round holes of the tube to the position directly below the positioning component. Therefore, during the upward reset of the positioning component, the sliding plate 2 can move forward, causing the second set of round holes to move to the position of the next welding point. When the sliding plate 2 moves, the supplementary component will automatically supplement the second pair of tubes to the positioning component for clamping. Thus, when the electric slider 6 drives the positioning component to descend next time, the second pair of tubes and the second set of round holes on the tube plate will be in a vertically aligned relationship, so that the welding work can continue. Each time the electric slider 6 rises, the sliding plate 2 will move stepwise via the tension component. Through the above embodiments, the positioning component accurately clamps the pipe fitting, enabling it to be precisely inserted into the round holes on the tube sheet after descent, achieving high-precision automatic welding and ensuring weld quality. When the positioning component rises and resets with the lifting platform 3, the tension component is activated simultaneously, and the sliding plate 2 moves forward a distance along the surface of the welding platform 1, so that the next set of round holes on the tube sheet are precisely aligned with the positioning component. During the movement, the replenishment component is triggered to transport the new pipe fitting to the clamping position of the positioning component, ensuring that the pipe fitting and the round hole are automatically aligned during subsequent welding, realizing automatic switching of welding points, improving continuous production efficiency, reducing manual adjustment time, and reducing operational errors. The coordinated positioning and replenishment components ensure a compact and efficient welding process, adapting to the needs of large-scale production.

[0025] like Figures 4 to 6 As shown, the positioning assembly includes two sets of hinge seats 8, each set of hinge seats 8 has two hinge seats. The hinge seats 8 are fixedly connected to the side of the lifting platform 3. The inner wall of each hinge seat 8 is hinged with an expansion plate 9. The expansion plate 9 is divided into a straight section, an arc section and a folding section. The inner wall of the arc section is fixedly connected with a friction element 10. One side of the straight section is fixedly connected with a torsion spring 11. The end of the torsion spring 11 away from the expansion plate 9 is fixedly connected to one side of the hinge seat 8.

[0026] During operation: Before the first welding, the pipe fitting is pushed into the arc section position along the folded section of the expansion clamping plate 9. The arc sections of the two expansion clamping plates 9 form a complete circular clamping groove to wrap and clamp the outer wall of the pipe fitting. When the pipe fitting is pushed into the arc section, the expansion clamping plate 9 will rotate with the hinge seat 8 and compress the torsion spring 11 to deform. When the pipe fitting enters the circular clamping groove, under the reaction force of the torsion spring 11, the two expansion clamping plates 9 tightly wrap and clamp the outer wall end of the pipe fitting. The friction element 10 increases the friction between the inner wall of the expansion clamping plate 9 and the pipe fitting, preventing the pipe fitting from accidentally falling off.

[0027] like Figures 5 to 6 As shown, a telescopic rod 14 is fixedly installed on the top of the lifting platform 3, and a connecting plate 13 is fixedly connected to the bottom end of the telescopic rod 14. A V-shaped plate 12 is symmetrically fixedly connected to the bottom end of the connecting plate 13, and the outer wall of the V-shaped plate 12 is respectively attached to the straight section of the two expansion clamping plates 9.

[0028] During operation: After the lifting platform 3 lowers the pipe fitting through the positioning component and inserts it into the round hole of the pipe plate, the welding mechanism composed of the control plate 4 and the spot welding head 5 completes the welding. In order to ensure that the pipe fitting is no longer subject to the clamping force of the two expansion plates 9, when the positioning component needs to be raised and reset, the telescopic rod 14 drives the V-shaped plate 12 to move upward synchronously through the connecting plate 13. The inclined surface of the V-shaped plate 12 fits against the straight section of the expansion plate 9. During the upward movement, an outward expansion thrust is gradually applied to the expansion plate 9. The thrust overcomes the elastic force of the torsion spring 11, causing the expansion plate 9 to rotate outward around the hinge seat 8. The arc-shaped clamping groove gradually separates from the outer wall of the pipe fitting, realizing the active release of the clamping force. After the expansion plate 9 is fully opened, the lifting platform 3 drives the positioning component to rise as a whole, avoiding the pipe fitting from being deformed by pressure or shifted in position due to continuous clamping.

[0029] like Figures 7 to 8 As shown, the tension assembly includes two rope reels 15, with a rotating rod 19 fixedly connected between the inner walls of the two rope reels 15. A clamping member 20 is symmetrically rotatably connected to the outer wall of the rotating rod 19. The clamping member 20 is fixedly installed on the top of the welding table 1. Cables 16 are wound around the outer walls of the rope reels 15, and one end of the cable 16 is fixedly connected to one side of the slide table 2.

[0030] During operation: When the electric slider 6 rises, it drives the two rope winding wheels 15 to rotate. As the rope winding wheels 15 rotate, the cable 16 wound on the outer wall gradually shortens, applying a horizontal pulling force to the slide plate 2. The pulling force of the cable 16 overcomes the frictional resistance between the slide plate 2 and the welding table 1, pushing the slide plate 2 to move horizontally along the surface of the welding table 1. After the movement is completed, the slide plate 2 drives the next set of round holes of the tube plate to accurately align directly below the positioning component, and at the same time triggers the replenishment component to complete the automatic replenishment of new tubes.

[0031] like Figures 7 to 9As shown, a connecting frame 22 is fixedly connected to the top of the electric slider 6, a ratchet 21 is fixedly connected to the outer wall of the rotating rod 19, a fixing plate 23 is fixedly connected to the bottom of the connecting frame 22, a plurality of trapezoidal blocks 24 are provided at one end of the fixing plate 23, and a spring 25 is fixedly connected between the plurality of trapezoidal blocks 24 and the fixing plate 23.

[0032] During operation: When the electric slider 6 descends along the inner wall of the electric slide rail 7, it drives the fixed plate 23 to move down synchronously via the connecting frame 22. During the downward movement of the fixed plate 23, multiple trapezoidal blocks 24 pass the position of the ratchet 21 in sequence. Since the surface of the trapezoidal block 24 adjacent to the ratchet 21 is inclined, the trapezoidal block 24 compresses the spring 25 during descent, causing elastic deformation, thus smoothly sliding over the teeth of the ratchet 21. At this time, the ratchet 21 remains stationary and does not rotate. When the electric slider 6 rises along the inner wall of the electric slide rail 7 to reset... At the same time, the fixed plate 23 drives the trapezoidal block 24 to move upward synchronously. During the upward movement of the trapezoidal block 24, its flat end is embedded in the tooth groove of the ratchet 21. Since the flat contact surface cannot squeeze the spring 25, the trapezoidal block 24 applies a unidirectional thrust to the tooth groove when passing through the ratchet 21, driving the ratchet 21 to rotate synchronously with the rotating rod 19. The rotation of the ratchet 21 drives the rope winding wheel 15 to wind the cable 16, thereby pulling the slide platform 2 to complete the step movement, thus realizing the unidirectional drive between the lifting platform 3 and the slide platform 2.

[0033] like Figures 2 to 3 As shown, the top surface of the welding table 1 is symmetrically provided with a sliding groove 18, and the bottom of the sliding table 2 is fixedly connected with multiple pulleys 17. The pulleys 17 are slidably connected to the sliding groove 18. One end of the sliding table 2 is provided with a counterweight assembly that drives the sliding table 2 to reset. Above the ratchet 21, a locking assembly is provided to restrict the ratchet 21.

[0034] During operation: The sliding groove 18 and pulley 17 restrict the movement of the slide platform 2 along the surface of the welding table 1, preventing positional deviation when the tension component moves the slide platform 2. The counterweight component ensures that when the slide platform 2 moves for the last time after all the pipes are welded to the tube sheet, the locking component loses its restriction on the ratchet 21 from rotating in the opposite direction, causing the cable 16 to be released automatically and the slide platform 2 to return to its original position. Under normal conditions, the locking component restricts the ratchet 21 from rotating in the opposite direction after each rotation due to the influence of the counterweight component, so that the slide platform 2 returns to its original position immediately after moving forward a certain distance.

[0035] like Figures 8 to 10As shown, the locking assembly includes a locking block 26, which is located in one of the tooth slots of the ratchet 21. A limiting post 29 is fixedly connected to the top of the locking block 26. An inner plate 28 is inserted into the outer wall of the limiting post 29. A spring 27 is provided on the outside of the limiting post 29. The two ends of the spring 27 are fixedly connected to the top of the locking block 26 and the bottom of the inner plate 28, respectively.

[0036] During operation: When the electric slider 6 rises and drives the ratchet 21 to rotate clockwise, the teeth of the ratchet 21 press against the inclined surface of the locking block 26, forcing the locking block 26 to slide upward against the elastic force of the second spring 27. The first limiting post 29 moves vertically upward along the inner wall of the inner plate 28, the second spring 27 is compressed, and the locking block 26 exits the current tooth groove, allowing the ratchet 21 to rotate unidirectionally and pass through the tooth position. After the ratchet 21 rotates, the locking block 26 is inserted into the next tooth groove under the action of the rebound force of the second spring 27, completing the unidirectional anti-reverse locking of the ratchet 21 and preventing it from reversing due to the counterweight component. The flat end of the locking block 26 is completely abutted against the vertical surface of the tooth groove of the ratchet 21, the second spring 27 is in a pre-tightened state, and the locking block 26 cannot be lifted, ensuring that the stepping position of the slide platform 2 is accurately locked.

[0037] like Figures 7 to 10 As shown, an inner groove seat 30 is fixedly connected to the side of the electric slide rail 7. One end of the inner connecting plate 28 is slidably connected to the inner wall of the inner groove seat 30. A limit post 2 32 is fixedly connected to the top of the inner connecting plate 28. A spring 31 is provided on the outside of the limit post 2 32. The two ends of the spring 31 are fixedly connected to the top of the inner connecting plate 28 and the inner wall of the inner groove seat 30, respectively. An extrusion block 1 33 is fixedly connected to both sides of the inner connecting plate 28. An extrusion block 2 34 is fixedly connected to one side of the slide plate 2.

[0038] During operation: After the last set of welding points is completed on the tube plate on the slide platform 2, the tension component causes the slide platform 2 to continue moving forward along the surface of the welding platform 1. During the movement of the slide platform 2, the second pressing block 34 on its side comes into contact with the first pressing block 33 on the side of the inner plate 28. The inclined surface of the second pressing block 34 applies a vertical upward thrust to the first pressing block 33. After being pushed, the first pressing block 33 drives the inner plate 28 to move vertically upward along the inner wall of the inner groove seat 30. The second limiting post 32 slides synchronously in the guide hole of the inner groove seat 30. The third spring 31 is compressed. When the inner plate 28 moves upward, the locking block 26 at its bottom is lifted synchronously, completely disengaging from the tooth groove of the ratchet 21 and releasing the one-way lock on the ratchet 21. At this time, the ratchet 21 can rotate freely. Under the action of the counterweight component, the slide platform 2 is directly reset to its original position in one go.

[0039] like Figure 2 and Figure 7As shown, the counterweight assembly includes a guide wheel 37, which is fixedly connected to one side of the welding table 1. A connecting rope 35 is fixedly connected to the side of the sliding platform 2, and a counterweight block 36 is fixedly connected to the bottom of the connecting rope 35.

[0040] During operation: When the second extrusion block 34 moves to extrude the first extrusion block 33 upward, the one-way lock of the ratchet 21 is engaged. At this time, under the action of the counterweight block 36, the entire slide platform 2 will return to the initial position in one go, and the staff can remove the welded tube plate and fittings.

[0041] like Figure 2 As shown, the supplementary component includes two receiving plates 40, which are fixedly connected to both sides of the welding table 1. A movable frame 38 is fixedly connected above the sliding plate 2. Multiple clamping rings 39 are fixedly connected to one side of the movable frame 38. The distance between each clamping ring 39 is the same as the distance between the circular holes on the tube sheet.

[0042] During operation: Before the welding operation begins, the operator inserts the pipes to be welded horizontally into the multiple clamping rings 39 on the moving frame 38 in sequence. The top plane of the receiving plate 40 is flush with the bottom plane of the clamping rings 39, which provides stable support for the pipes and prevents the pipes from sagging due to their own weight and misaligning with the round holes of the tube plate. When the sliding plate 2 moves along the surface of the welding table 1, the moving frame 38 simultaneously drives all the pipes forward. Each step distance is equal to the distance between adjacent round holes on the tube plate, ensuring that the current pipe is accurately moved to the top of the round hole on the tube plate.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger welding device, comprising a welding table, characterized in that: The welding table is equipped with a sliding plate on top, which is used to place the tube sheet and move it. An electric slide rail is fixedly installed on the top of the welding table. An electric slider is slidably connected to the inner wall of the electric slide rail. A lifting platform is fixedly connected to one side of the electric slider. A control board is fixedly connected to the bottom of the lifting platform. Multiple spot welding heads are fixedly connected to one side of the control board. A positioning component for clamping the tube is set on one side of the lifting platform. A tension component for moving the sliding plate along the surface of the welding table is set on one side of the electric slider. A replenishment component for automatically replenishing tubes to the positioning component is set above the sliding plate.

2. The heat exchanger welding equipment according to claim 1, characterized in that: The positioning assembly includes two sets of hinge seats, each set having two hinge seats. The hinge seats are fixedly connected to the side of the lifting platform. The inner wall of each hinge seat is hinged with an expansion plate. The expansion plate is divided into a straight section, an arc section, and a folding section. The inner wall of the arc section is fixedly connected with a friction element. One side of the straight section is fixedly connected with a torsion spring. The end of the torsion spring away from the expansion plate is fixedly connected to one side of the hinge seat.

3. The heat exchanger welding equipment according to claim 2, characterized in that: A telescopic rod is fixedly installed on the top of the lifting platform. A connecting plate is fixedly connected to the bottom of the telescopic rod. V-shaped plates are symmetrically fixedly connected to the bottom of the connecting plate. The outer wall of the V-shaped plate is respectively attached to the straight section of the two expansion plates.

4. The heat exchanger welding equipment according to claim 3, characterized in that: The tension assembly includes two rope reels, with a rotating rod fixedly connected between the inner walls of the two rope reels. A clamping member is symmetrically rotatably connected to the outer wall of the rotating rod. The clamping member is fixedly installed on the top of the welding table. The outer walls of the rope reels are wound with cables, and one end of the cable is fixedly connected to one side of the slide platform.

5. The heat exchanger welding equipment according to claim 4, characterized in that: A connecting frame is fixedly connected to the top of the electric slider, a ratchet is fixedly connected to the outer wall of the rotating rod, a fixing plate is fixedly connected to the bottom of the connecting frame, and multiple trapezoidal blocks are provided at one end of the fixing plate. A spring is fixedly connected between the multiple trapezoidal blocks and the fixing plate.

6. The heat exchanger welding equipment according to claim 5, characterized in that: The top surface of the welding table is symmetrically provided with a sliding groove, and the bottom of the sliding plate is fixedly connected with multiple pulleys. The pulleys are slidably connected to the sliding groove. One end of the sliding plate is provided with a counterweight assembly that drives the sliding plate to reset. Above the ratchet is a locking assembly that restricts the ratchet.

7. The heat exchanger welding equipment according to claim 6, characterized in that: The locking assembly includes a locking block located in one of the tooth slots of the ratchet. A limiting post 1 is fixedly connected to the top of the locking block. An inner plate is inserted into the outer wall of the limiting post 1. A spring 2 is provided on the outside of the limiting post 1. The two ends of the spring 2 are fixedly connected to the top of the locking block and the bottom of the inner plate, respectively.

8. The heat exchanger welding equipment according to claim 7, characterized in that: An inner groove seat is fixedly connected to the side of the electric slide rail. One end of the inner connecting plate is slidably connected to the inner wall of the inner groove seat. A limit post two is fixedly connected to the top of the inner connecting plate. A spring three is provided on the outside of the limit post two. The two ends of the spring three are fixedly connected to the top of the inner connecting plate and the inner wall of the inner groove seat, respectively. An extrusion block one is fixedly connected to both sides of the inner connecting plate, and an extrusion block two is fixedly connected to one side of the slide platform.

9. The heat exchanger welding equipment according to claim 8, characterized in that: The counterweight assembly includes a guide wheel, which is fixedly connected to one side of the welding table. A connecting rope is fixedly connected to the side of the sliding platform, and a counterweight block is fixedly connected to the bottom of the connecting rope.

10. A heat exchanger welding device according to claim 9, characterized in that: The supplementary components include two receiving plates, which are fixedly connected to both sides of the welding table. A movable frame is fixedly connected above the sliding plate, and multiple clamping rings are fixedly connected to one side of the movable frame. The distance between each clamping ring is the same as the distance between the circular holes on the tube sheet.

Images