A laser welding device for processing a plate heat exchanger

Abstract

This invention provides a laser welding device for processing plate heat exchangers, belonging to the technical field of laser welding machines. The laser welding device for processing plate heat exchangers includes a main unit housing. A first support frame is fixedly mounted on the top surface of the main unit housing. A first guide rail frame is provided on one side of the first support frame. A second guide rail frame is provided on one side of the first guide rail frame. A laser welding head is mounted on one side of the second guide rail frame. Two third guide rail frames are mounted on the top surface of the main unit housing. A flipping assembly is provided on the top surface of the main unit housing. This invention, by setting up the flipping assembly, can achieve the purpose of automatically flipping the plates, which is safer than existing manual flipping and can greatly improve welding efficiency, thus greatly improving the overall practicality of the device. Furthermore, the flipping process relies solely on the device's own power, without an external power source, further enhancing the overall practicality of the device.

Description

Technical Field

[0001] This invention relates to the field of laser welding machine technology, and more specifically, to a laser welding apparatus for processing plate heat exchangers. Background Technology

[0002] Plate heat exchangers are a type of high-efficiency heat exchange equipment widely used in industries such as chemical, refrigeration, heating, and food processing. Through precise processing and design, plate heat exchangers play an important role in energy saving and efficient heat exchange. During the manufacturing process of plate heat exchangers, laser welding machines are used to weld the plates inside the heat exchanger, that is, to weld isolation points between the plates to ensure that there are gaps for air circulation between the plates when they are installed inside the heat exchanger.

[0003] However, existing laser welding machines still have some problems in actual use. For example, existing laser welding equipment can only weld one side of the plate during the welding process. After one side is welded, the plate needs to be removed and flipped over to weld again, which increases the labor intensity of the operators. Summary of the Invention

[0004] To overcome the above deficiencies, the present invention provides a laser welding apparatus for processing plate heat exchangers that overcomes or at least partially solves the above technical problems.

[0005] This invention is implemented as follows:

[0006] This invention provides a laser welding device for processing plate heat exchangers, including a main chassis. A first upright is fixedly installed on the top surface of the main chassis. A first guide rail is provided on one side surface of the first upright. A second guide rail is provided on one side of the first guide rail. A laser welding head is installed on one side of the second guide rail. Two third guide rails are installed on the top surface of the main chassis. A movable frame is provided on the top surface of the two third guide rails. A top frame is installed on the top surface of the movable frame. A flipping assembly is provided on the top surface of the top frame. An auxiliary welding assembly is provided on the top surface of the main chassis. A protective assembly is provided at the rear of the main chassis. An extension plate is fixedly installed on one side surface of the movable frame.

[0007] The flipping assembly includes a fixing frame, and the number of fixing frames is four. The four fixing frames are respectively fixedly installed on the top surface of the two top frames. A clamping frame is provided on the inner side of the fixing frame, and a plate is clamped inside the clamping frame. The flipping assembly is configured to flip the plate.

[0008] The auxiliary welding assembly includes a housing 1 and a housing 2, which are respectively fixedly installed on one side of the two guide rail frames 3. The auxiliary welding assembly is used for cleaning the plates.

[0009] The protective component includes a liquid storage tank, which is fixedly installed on the rear surface of the main unit housing. The protective component is provided for protection after the plates are welded.

[0010] In a preferred embodiment, the fixing frame has a snap-fit ​​groove inside, and the clamping frame has a roller installed on its side, with the roller located inside the snap-fit ​​groove.

[0011] In a preferred embodiment, a connecting shaft is fixedly connected to one side surface of the clamping frame, a ratchet assembly is mounted on the outer surface of the connecting shaft, and a slanted frame is fixedly mounted on the top surface of the main unit housing. The slanted frame is positioned between the two top frames, and the slanted surface of the slanted frame is provided with toothed grooves.

[0012] In a preferred embodiment, a second upright is fixedly installed on the top surface of the main unit chassis, two first rectangular frames are fixedly connected to the bottom surface of the second upright, two second rectangular frames are fixedly connected to the front surface of the second upright, the two second rectangular frames are inclined, a connecting pipe is fixedly connected between the two first rectangular frames and the two second rectangular frames, and multiple air outlet pipes are fixedly connected to one side of the two first rectangular frames and the two second rectangular frames, and an air outlet nozzle is fixedly connected to one end of each of the multiple air outlet pipes.

[0013] In a preferred embodiment, both the first and second boxes are equipped with a bladder. One side surface of the first box is provided with a snap-fit ​​groove, and a snap-fit ​​plate is movably snapped into the snap-fit ​​groove. A compression plate is movably snapped into the inside of the first box. One side surface of the compression plate is bonded to one side surface of the bladder, and one side surface of the snap-fit ​​plate is fixedly connected to one side surface of the compression plate.

[0014] In a preferred embodiment, air supply pipes are fixedly connected to the top surfaces of both housing 1 and housing 2, and one-way valves are fixedly installed on the outer surfaces of both air supply pipes. The other end of one of the air supply pipes is fixedly connected to one side surface of one of the rectangular frames, and the other end of the air supply pipe is fixedly connected to one side surface of one of the rectangular frames. An air inlet pipe is fixedly connected to one side surface of both housing 1 and housing 2, and one-way valves are fixedly installed on the outer surface of the air inlet pipe.

[0015] In a preferred embodiment, a tank body is provided above the liquid storage tank, a baffle is fixedly installed on the inner wall of the tank body, a sealing plate is movably engaged inside the tank body, a spring is fixedly connected between the bottom surface of the sealing plate and the inner bottom surface of the tank body, a connecting pipe is fixedly connected between the tank body and the liquid storage tank, and a one-way valve is fixedly installed on the outer surface of the connecting pipe.

[0016] In a preferred embodiment, a T-shaped frame is fixedly installed on the top surface of the sealing plate, and wedges are fixedly installed at both ends of the top surface of the T-shaped frame. An extension rod is fixedly connected to one side surface of the extension plate.

[0017] In a preferred embodiment, a connecting pipe 2 is fixedly connected to the top surface of the sealing plate, a one-way valve 4 is fixedly installed on the outer surface of the connecting pipe 2, a rectangular tube is fixedly connected to the top end of the connecting pipe 2, and an infusion tube is fixedly connected to both ends of the rectangular tube, the infusion tube being a corrugated tube.

[0018] In a preferred embodiment, the top frame has a hollow interior, and multiple air nozzles are fixedly connected to the top surface of the top frame. One end of the infusion tube is fixedly connected to one side surface of the top frame.

[0019] The laser welding apparatus for processing plate heat exchangers provided by this invention has the following advantages:

[0020] 1. By setting up a flipping assembly, the moving frame drives the top frame to move towards the inclined frame. When the ratchet assembly contacts the inclined surface of the inclined frame, the movement of the top frame causes one end of the clamping frame to tilt upwards, moving the roller at the tilted end away from the inside of the first locking groove. As the ratchet assembly continues to move, the clamping frame gradually reaches a vertical position. The roller inside the first locking groove moves away from the inclined frame, reducing the angle between the plate and the fixed frame. Under its own weight, the plate falls downwards, causing the four rollers to re-lock into the first locking groove. This achieves automatic flipping of the plate, which is safer than manual flipping and greatly improves welding efficiency, thus significantly enhancing the overall practicality of the device. Furthermore, the flipping process relies solely on the device's own power, without an external power source, further improving the device's overall usability.

[0021] 2. By setting up auxiliary welding components, when the moving frame drives the top frame to move towards the inclined frame, when the extension plates installed on the outer sides of the two moving frames contact the snap-fit ​​plate, they can drive the snap-fit ​​plate to move inside the snap-fit ​​groove two, squeezing the air inside the bladder into the air supply pipe. The air is then sprayed out towards the plate during the movement through the air outlet pipe and air outlet nozzle set on the front surface of the rectangular frame one. On the one hand, this can be used to clean the welded surface of the plate after welding. On the other hand, during the flipping process, the inclined rectangular frame two can be used to clean the plate again during the flipping process. During the flipping process, the welded surface of the plate is presented on one side of the rectangular frame two, which can be used to clean the welded surface of the plate, thereby ensuring the subsequent welding quality and making the subsequent welding effect better.

[0022] 3. By setting up protective components, as the moving frame moves the top frame towards the laser welding head, it drives the extension rod towards the wedge block, causing the extension rod to contact the wedge surface of the wedge block. The T-shaped frame gradually moves downward, causing the sealing plate to move downward inside the tank, squeezing the protective oil inside the tank into the connecting pipe 2. The oil is then atomized and sprayed onto the welding surface of the plate through multiple air nozzles installed on the top surface of the moving frame, thereby forming a protective film on the welding surface of the plate, thus effectively protecting the welding surface of the plate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is an overall perspective view provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the flipping component structure provided for an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the overall front view structure provided for an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the auxiliary welding assembly structure provided for an embodiment of the present invention;

[0028] Figure 5 Provided for the embodiments of the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0029] Figure 6 A schematic diagram of the top frame structure provided for an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the overall rear view structure provided for an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the protective component structure provided for an embodiment of the present invention;

[0032] Figure 9 Provided for the embodiments of the present invention Figure 8 Enlarged structural diagram at point B.

[0033] In the diagram: 1. Main unit chassis; 2. Stand 1; 3. Guide rail frame 1; 4. Guide rail frame 2; 5. Laser welding head; 6. Guide rail frame 3; 7. Moving frame; 8. Top frame; 9. Plate; 10. Slanted frame; 11. Flipping assembly; 1101. Fixed frame; 1102. Snap-fit ​​slot 1; 1103. Roller; 1104. Clamping frame; 1105. Connecting shaft; 1106. Ratchet assembly; 12. Auxiliary welding assembly; 1201. Housing 1; 1202. Housing 2; 1203. Stand 2; 1204. Rectangular frame 1; 1205. Rectangular frame 2; 1206. Air outlet pipe; 1207. Air outlet nozzle 1; 1208. Connecting pipe; 120 9. Bag body; 1210. Squeezing plate; 1211. Snap-fit ​​groove two; 1212. Gas delivery pipe; 1213. One-way valve one; 1214. Snap-fit ​​plate; 1215. Air inlet pipe; 1216. One-way valve two; 13. Protective components; 1301. Liquid storage tank; 1302. Connecting pipe one; 1303. One-way valve three; 1304. T-shaped frame; 1305. Wedge block; 1306. Rectangular tube; 1307. Liquid delivery pipe; 1308. Tank body; 1309. Baffle; 1310. Sealing plate; 1311. Spring; 1312. Connecting pipe two; 1313. One-way valve four; 14. Extension plate; 15. Gas outlet nozzle two; 16. Extension rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figures 1-9 The present invention provides a technical solution: a laser welding device for processing plate heat exchangers, including a main unit 1, a support frame 2 fixedly installed on the top surface of the main unit 1, a guide rail frame 3 provided on one side surface of the support frame 2, a guide rail frame 4 provided on one side of the guide rail frame 3, a laser welding head 5 installed on one side of the guide rail frame 4, two guide rail frames 6 installed on the top surface of the main unit 1, a movable frame 7 provided on the top surface of the two guide rail frames 6, a top frame 8 installed on the top surface of the movable frame 7, a flipping assembly 11 provided on the top surface of the top frame 8, an auxiliary welding assembly 12 provided on the top surface of the main unit 1, a protective assembly 13 provided at the rear of the main unit 1, and an extension plate 14 fixedly installed on one side surface of the movable frame 7.

[0036] During operation, when welding plate 9, simply clamp the plate 9 to be welded inside the clamping frame 1104. After fixing plate 9, the moving frame 7 can be controlled to drive the top frame 8 to move downwards towards the guide rail frame 2 4 until it reaches the set position. Then, the guide rail frame 2 4 can drive the laser welding head 5 to move and perform welding operations on the plate 9 below, thereby realizing automatic welding of plate 9. After welding is completed, plate 9 can be removed from inside the clamping frame 1104.

[0037] The flipping assembly 11 includes a fixing frame 1101, and there are four fixing frames 1101. The four fixing frames 1101 are respectively fixedly installed on the top surface of the two top frames 8. A clamping frame 1104 is provided on the inner side of the fixing frame 1101. The clamping frame 1104 clamps the plate 9 inside. The flipping assembly 11 is used to flip the plate 9.

[0038] The fixed frame 1101 has a snap-fit ​​groove 1102 inside. The clamping frame 1104 has a roller 1103 installed on its side. The roller 1103 is located inside the snap-fit ​​groove 1102. A connecting shaft 1105 is fixedly connected to one side surface of the clamping frame 1104. A ratchet assembly 1106 is installed on the outer surface of the connecting shaft 1105. A slanted frame 10 is fixedly installed on the top surface of the main unit housing 1. The slanted frame 10 is located between the two top frames 8. The slanted surface of the slanted frame 10 has a toothed groove.

[0039] During operation, after one side of the plate 9 inside the clamping frame 1104 is welded, the top frame 8 can be moved towards the inclined frame 10 by controlling the moving frame 7. During the movement, when the ratchet assembly 1106 contacts the inclined surface of the inclined frame 10, that is, after contacting the tooth groove of the inclined frame 10, as the top frame 8 moves, it can cause one end of the clamping frame 1104 to tilt upward, so that the roller 1103 at the tilted end moves away from the inside of the locking groove 1102. As the ratchet assembly 1106 continues to move, it can gradually drive the clamping frame 1104 to a vertical state, and allow the roller 1103 inside the locking groove 1102 to remain within the locking groove 1102. The plate moves away from the inclined frame 10, reducing the angle between the original welding surface plate 9 and the fixed frame 1101. Under its own weight, it falls downward, causing the four rollers 1103 to re-engage in the locking groove 1102, thereby flipping the clamping frame 1104, which in turn flips the plate 9. After the flip is completed, the top frame 8 can be moved back below the laser welding head 5 by controlling the moving frame 7 to perform welding on the other side of the plate 9. Furthermore, when the top frame 8 moves towards the laser welding head 5, the ratchet assembly 1106 will not cause the connecting shaft 1105 and the clamping frame 1104 to move.

[0040] Through the above, the purpose of automatically flipping the plate 9 can be achieved, which is safer than the existing manual flipping and can greatly improve the welding efficiency, thereby greatly improving the overall practicality of the device. Furthermore, the flipping is carried out solely by the device's own power without any external power source, further enhancing the overall practicality of the device.

[0041] The auxiliary welding assembly 12 includes a first housing 1201 and a second housing 1202. The first housing 1201 and the second housing 1202 are respectively fixedly installed on one side of two guide rail frames 6. The auxiliary welding assembly 12 is used for cleaning the plate 9.

[0042] A second upright bracket 1203 is fixedly installed on the top surface of the main unit 1. Two rectangular frames 1204 are fixedly connected to the bottom surface of the second upright bracket 1203. Two rectangular frames 1205 are fixedly connected to the front surface of the second upright bracket 1203. The two rectangular frames 1205 are arranged at an angle. A connecting pipe 1208 is fixedly connected between the two rectangular frames 1204 and the two rectangular frames 1205. Multiple air outlet pipes 1206 are fixedly connected to one side of each of the two rectangular frames 1204 and the two rectangular frames 1205. An air outlet nozzle 1207 is fixedly connected to one end of each of the multiple air outlet pipes 1206. A bladder 1209 is installed inside both the first housing 1201 and the second housing 1202. A snap-fit ​​groove 1211 is opened on one side surface of the first housing 1201. A snap-fit ​​plate 1214 is movably snapped into the snap-fit ​​groove 1211. An extrusion plate 1210 is movably connected inside the first box 1201. One side surface of the extrusion plate 1210 is bonded to one side surface of the bladder 1209. One side surface of the snap-fit ​​plate 1214 is fixedly connected to one side surface of the extrusion plate 1210. An air supply pipe 1212 is fixedly connected to the top surface of both the first box 1201 and the second box 1202. A one-way valve 1213 is fixedly installed on the outer surface of each air supply pipe 1212. The other end of one air supply pipe 1212 is fixedly connected to one side surface of one rectangular frame 1204, and the other end of the other air supply pipe 1212 is fixedly connected to one side surface of one rectangular frame 1205. An air inlet pipe 1215 is fixedly connected to one side surface of both the first box 1201 and the second box 1202. A one-way valve 1216 is fixedly installed on the outer surface of the air inlet pipe 1215.

[0043] During operation, when the moving frame 7 drives the top frame 8 to move towards the inclined frame 10, when the extension plates 14 installed on the outer sides of the two moving frames 7 contact the snap-fit ​​plate 1214, the snap-fit ​​plate 1214 can move inside the snap-fit ​​groove 1211. During the movement, the extrusion plate 1210 can extrude the bladder 1209 inside the first box 1201 and the second box 1202, forcing the air inside the bladder 1209 into the air supply pipe 1212. The air inside the first box 1201 finally enters the rectangular frame 1204 and is sprayed out towards the plate 9 during the movement through the air outlet pipe 1206 and air outlet nozzle 1207 provided on the front surface of the rectangular frame 1204, that is, blown towards the welding surface of the plate 9, which can weld the plate 9. The welding debris and dust generated during welding are blown away, thus cleaning the welding surface of plate 9. Meanwhile, air from the bladder 1209 inside the housing 1202 enters the rectangular frame 1205 through another air supply pipe 1212. During the flipping of plate 9, it is cleaned again. Furthermore, as the top frame 8 moves, and plate 9 flips, the unwelded surfaces of plate 9 are effectively cleaned, preventing debris and dust from remaining on the surface during subsequent welding, which could lead to poor welding results. Once plate 9 has flipped, the moving frame 7 drives the top frame 8 towards the laser welding head 5, and the bladder 1209 returns to its original state, allowing air to be drawn back into the bladder 1209 through the air inlet pipe 1215.

[0044] Through the above, on the one hand, the welding surface of plate 9 can be cleaned after welding. On the other hand, during the flipping process, the inclined rectangular frame 1205 can clean plate 9 again during the flipping process. During the flipping process, the welding surface of plate 9 is presented on one side of the rectangular frame 1205, which can clean the welding surface of plate 9, thereby ensuring the subsequent welding quality and making the subsequent welding effect better.

[0045] The protective component 13 includes a liquid storage tank 1301, which is fixedly installed on the rear surface of the main unit housing 1. The protective component 13 is provided for the protection of the plate 9 after welding.

[0046] A tank body 1308 is installed above the liquid storage tank 1301. A baffle 1309 is fixedly installed on the inner wall of the tank body 1308. A sealing plate 1310 is movably engaged inside the tank body 1308. A spring 1311 is fixedly connected between the bottom surface of the sealing plate 1310 and the inner bottom surface of the tank body 1308. A connecting pipe 1302 is fixedly connected between the tank body 1308 and the liquid storage tank 1301. A one-way valve 1303 is fixedly installed on the outer surface of the connecting pipe 1302. A T-shaped bracket 1304 is fixedly installed on the top surface of the sealing plate 1310. Both ends of the top surface of the T-shaped bracket 1304 are fixedly installed with... There is a wedge block 1305, an extension rod 16 is fixedly connected to one side surface of the extension plate 14, a connecting pipe 1312 is fixedly connected to the top surface of the sealing plate 1310, a one-way valve 1313 is fixedly installed on the outer surface of the connecting pipe 1312, a rectangular tube 1306 is fixedly connected to the top end of the connecting pipe 1312, and an infusion tube 1307 is fixedly connected to both ends of the rectangular tube 1306. The infusion tube 1307 is a corrugated tube. The top frame 8 has a hollow internal structure. Multiple air nozzles 15 are fixedly connected to the top surface of the top frame 8. One end of the infusion tube 1307 is fixedly connected to one side surface of the top frame 8.

[0047] During operation, as the moving frame 7 drives the top frame 8 towards the laser welding head 5, it also drives the extension rod 16 towards the wedge block 1305. As welding progresses, the extension rod 16 contacts the wedge surface of the wedge block 1305. Furthermore, as the moving frame 7 drives the top frame 8 in a stepping motion, the T-shaped frame 1304 gradually moves downwards, thereby causing the sealing plate 1310 to move downwards inside the tank body 1308. During this movement, the protective oil inside the tank body 1308 is squeezed into the connecting pipe 1312. Inside, the oil is conveyed into the interior of the movable frame 7 through the connecting pipe 1312, and finally atomized and sprayed onto the welding surface of the plate 9 through multiple air nozzles 15 installed on the top surface of the movable frame 7, thereby forming a protective film on the welding surface of the plate 9, thus effectively protecting the welding surface of the plate 9. Furthermore, as the extension rod 16 moves away from the wedge block 1305, the sealing plate 1310 can be lowered by the reset action of the spring 1311, and the protective oil inside the storage tank 1301 is drawn back into the tank body 1308 for subsequent use.

[0048] In the above process, after the other side of plate 9 is also welded, it can be flipped over, and then the moving frame 7 is controlled to drive the top frame 8 towards the liquid storage tank 1301. Based on the above principle, the protective oil is sprayed onto the other side of the welding surface of plate 9, thereby achieving the purpose of spraying the protective oil onto the welding surface of plate 9 after welding, and thus achieving an effective protective effect on the welded plate 9.

[0049] Specifically, the working process or principle of this laser welding device for processing plate heat exchangers is as follows: During use, the plate 9 to be welded is clamped and placed inside the clamping frame 1104. After the plate 9 is fixed, the moving frame 7 drives the top frame 8 to move downwards towards the guide rail frame 4 until it reaches the set position. Then, the guide rail frame 4 drives the laser welding head 5 to perform welding on the plate 9 below, thus achieving automatic welding of the plate 9. After welding is completed, the plate 9 is removed from inside the clamping frame 1104. When one side of the plate 9 inside the clamping frame 1104 is welded, the moving frame 7 drives the top frame 8 to move towards the inclined frame 10. After the ratchet assembly 1106 contacts the inclined surface of the inclined frame 10, as the top frame 8 moves, it can cause one end of the clamping frame 1104 to tilt upward, so that the roller 1103 at the tilted end moves away from the inside of the locking groove 1102. As the ratchet assembly 1106 continues to move, it can gradually drive the clamping frame 1104 to a vertical state. The roller 1103 inside the locking groove 1102 moves away from the inclined frame 10 inside the locking groove 1102, so that the angle between the plate 9 of the original welding surface and the fixing frame 1101 becomes smaller, and it can fall downward under its own weight, so that the four rollers 1103 are re-locked inside the locking groove 1102, thereby realizing the flipping of the clamping frame 1104.

[0050] When the moving frame 7 drives the top frame 8 to move towards the inclined frame 10, when the extension plates 14 installed on the outer side of the two moving frames 7 come into contact with the snap-fit ​​plate 1214, the snap-fit ​​plate 1214 can be driven to move inside the snap-fit ​​groove 1211, squeezing the air inside the bladder 1209 into the air supply pipe 1212, and spraying it out towards the plate 9 during the movement through the air outlet pipe 1206 and air outlet nozzle 1207 provided on the front surface of the rectangular frame 1204, that is, blowing it out towards the welding surface of the plate 9, which can blow away the debris and dust attached to the welding surface of the plate 9. In addition, the air in the bladder 1209 inside the box 1202 enters into the interior of the rectangular frame 1205 through another air supply pipe 1212, which can effectively clean the unwelded surface of the plate 9.

[0051] As the moving frame 7 moves the top frame 8 toward the laser welding head 5, it can move the extension rod 16 toward the wedge block 1305. As welding progresses, the extension rod 16 contacts the wedge surface of the wedge block 1305. As the moving frame 7 moves the top frame 8 in a stepping motion, the T-shaped frame 1304 moves downwards, thereby causing the sealing plate 1310 to move downwards inside the tank 1308. During this movement, the protective oil inside the tank 1308 is squeezed into the connecting pipe 1312 and transported into the moving frame 7 through the connecting pipe 1312. Finally, the oil is atomized and sprayed onto the welding surface of the plate 9 through multiple air nozzles 15 installed on the top surface of the moving frame 7, thereby forming a protective film on the welding surface of the plate 9 and effectively protecting the welding surface of the plate 9.

Claims

1. A laser welding device for processing plate heat exchangers, comprising a main unit (1), wherein a first support frame (2) is fixedly mounted on the top surface of the main unit (1), a first guide rail frame (3) is provided on one side surface of the first support frame (2), a second guide rail frame (4) is provided on one side of the first guide rail frame (3), and a laser welding head (5) is mounted on one side of the second guide rail frame (4), characterized in that, The top surface of the main unit (1) is equipped with two guide rail brackets (6), the top surface of the two guide rail brackets (6) is provided with a movable frame (7), the top surface of the movable frame (7) is equipped with a top frame (8), the top surface of the top frame (8) is provided with a flipping component (11), the top surface of the main unit (1) is provided with an auxiliary welding component (12), the rear of the main unit (1) is provided with a protective component (13), and an extension plate (14) is fixedly installed on one side surface of the movable frame (7). The flipping assembly (11) includes a fixing frame (1101), and there are four fixing frames (1101). The four fixing frames (1101) are respectively fixedly installed on the top surface of the two top frames (8). A clamping frame (1104) is provided on the inner side of the fixing frame (1101). The clamping frame (1104) holds a plate (9) inside. The flipping assembly (11) is used to flip the plate (9). The auxiliary welding assembly (12) includes a housing one (1201) and a housing two (1202). The housing one (1201) and the housing two (1202) are respectively fixedly installed on one side of the two guide rail frames three (6). The auxiliary welding assembly (12) is used for cleaning the plate (9). The protective component (13) includes a liquid storage tank (1301), which is fixedly installed on the rear surface of the main unit housing (1). The protective component (13) is provided for the protection of the plate (9) after welding. The fixing frame (1101) has a snap-fit ​​groove (1102) inside, and the clamping frame (1104) is equipped with a roller (1103) on its side, and the roller (1103) is located inside the snap-fit ​​groove (1102). A connecting shaft (1105) is fixedly connected to one side surface of the clamping frame (1104), and a ratchet assembly (1106) is installed on the outer surface of the connecting shaft (1105). A slanted frame (10) is fixedly installed on the top surface of the main unit (1). The slanted frame (10) is located between the two top frames (8), and the slanted surface of the slanted frame (10) is provided with tooth grooves. The top surface of the main unit (1) is fixedly installed with a second upright frame (1203). The bottom surface of the second upright frame (1203) is fixedly connected with two rectangular frames (1204). The front surface of the second upright frame (1203) is fixedly connected with two rectangular frames (1205). The two rectangular frames (1205) are inclined. A connecting pipe (1208) is fixedly connected between the two rectangular frames (1204) and the two rectangular frames (1205). Multiple air outlet pipes (1206) are fixedly connected to one side of the two rectangular frames (1204) and the two rectangular frames (1205). One end of each of the multiple air outlet pipes (1206) is fixedly connected with an air outlet nozzle (1207). Both the first box (1201) and the second box (1202) are equipped with a bladder (1209). A snap-fit ​​groove (1211) is provided on one side surface of the first box (1201). A snap-fit ​​plate (1214) is movably snapped into the second snap-fit ​​groove (1211). A compression plate (1210) is movably snapped into the first box (1201). One side surface of the compression plate (1210) is bonded to one side surface of the bladder (1209). One side surface of the snap-fit ​​plate (1214) is fixedly connected to one side surface of the compression plate (1210).

2. The laser welding apparatus for processing plate heat exchangers according to claim 1, characterized in that, The top surfaces of both housing 1 (1201) and housing 2 (1202) are fixedly connected to air supply pipes (1212). One-way valves (1213) are fixedly installed on the outer surfaces of the air supply pipes (1212). The other end of one of the air supply pipes (1212) is fixedly connected to one side surface of one of the rectangular frames (1204), and the other end of the other air supply pipe (1212) is fixedly connected to one side surface of one of the rectangular frames (1205). One-way pipes (1215) are fixedly connected to one side surface of both housing 1 (1201) and housing 2 (1202). One-way valves (1216) are fixedly installed on the outer surface of the air inlet pipes (1215).

3. The laser welding apparatus for processing plate heat exchangers according to claim 2, characterized in that, A tank body (1308) is provided above the liquid storage tank (1301). A baffle (1309) is fixedly installed on the inner wall of the tank body (1308). A sealing plate (1310) is movably connected inside the tank body (1308). A spring (1311) is fixedly connected between the bottom surface of the sealing plate (1310) and the inner bottom surface of the tank body (1308). A connecting pipe (1302) is fixedly connected between the tank body (1308) and the liquid storage tank (1301). A one-way valve (1303) is fixedly installed on the outer surface of the connecting pipe (1302).

4. The laser welding apparatus for processing plate heat exchangers according to claim 3, characterized in that, A T-shaped frame (1304) is fixedly installed on the top surface of the sealing plate (1310), and wedges (1305) are fixedly installed at both ends of the top surface of the T-shaped frame (1304). An extension rod (16) is fixedly connected to one side surface of the extension plate (14).

5. The laser welding apparatus for processing plate heat exchangers according to claim 4, characterized in that, The top surface of the sealing plate (1310) is fixedly connected to a connecting pipe two (1312), and a one-way valve four (1313) is fixedly installed on the outer surface of the connecting pipe two (1312). A rectangular tube (1306) is fixedly connected to the top end of the connecting pipe two (1312), and an infusion tube (1307) is fixedly connected to both ends of the rectangular tube (1306). The infusion tube (1307) is a corrugated tube.

6. The laser welding apparatus for processing plate heat exchangers according to claim 5, characterized in that, The top frame (8) has a hollow structure inside. Multiple air nozzles (15) are fixedly connected to the top surface of the top frame (8). One end of the infusion pipe (1307) is fixedly connected to one side surface of the top frame (8).

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