Automatic welding equipment for dish washing basket rack and welding method of automatic welding equipment

Abstract

The automatic welding equipment comprises a machine body mechanism, the machine body mechanism comprises a welding base, a basket frame mold mechanism is arranged in the middle of the upper end of the welding base, and the basket frame mold mechanism comprises a limiting mold. Through cooperative arrangement of the machine body mechanism and the basket frame mold mechanism, the bent and formed protection plates are arranged on the outer side of a limiting mold, extrusion limiting is conducted through a limiting push plate, then the welding ends of the protection plates can be close to each other, through arrangement of a fourth hydraulic cylinder and an inner ejection sleeve, a filtering backboard makes contact with the ends of the protection plates, and in this way, the protection plates can be fixed through the limiting mold. The side faces and the ends can be welded at a time, the welding efficiency is higher, use is more convenient, the occupied area of equipment can be reduced, the use cost is reduced, by arranging the springs, extrusion is prevented from being affected, the bottom plate is prevented from being extruded and bent, the requirement for the stretching precision of the fourth hydraulic cylinder can be lowered, and the cost can be further reduced.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to an automatic welding device and welding method for a dishwashing basket rack. Background Technology

[0002] Welding automation refers to the automated control of the welding process using technologies such as computers and robots. Welding is a process in which the materials of the workpieces (of the same or different types) are heated, pressurized, or both, with or without filler material, to achieve atomic bonding and form a permanent joint. Welding has a wide range of applications, applicable to both metals and non-metals.

[0003] In the existing technology, the production process of dishwashing baskets varies depending on the model. When using welding methods for production, the dishwashing baskets need to be welded in steps and transferred through many steps. As a result, the automated welding equipment currently used for dishwashing baskets occupies a large area, is costly, and is inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic welding device and welding method for dish racks, in order to solve the problems mentioned in the background art, which are that the production process of dish racks varies depending on the model, and that when using welding methods for production, the dish racks need to be welded in steps and transferred in many steps, resulting in the current automated welding equipment for dish racks having a large footprint, high cost, and inconvenience of use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic welding device and welding method for a dishwashing basket rack, comprising a machine body mechanism, the machine body mechanism including a welding base, a basket rack mold mechanism being provided at the upper center of the welding base, the basket rack mold mechanism including a limiting mold, a first mounting seat fixedly connected to the middle of both sides of the upper end of the welding base, and a second mounting seat fixedly connected to the middle of the other two sides of the upper end of the welding base, a first hydraulic cylinder fixedly connected to the upper end of the first mounting seat, a first welding component fixedly connected to the output end of the first hydraulic cylinder, a second hydraulic cylinder fixedly connected to the upper end of the second mounting seat, a limiting push plate fixedly connected to the output end of the second hydraulic cylinder, an inner cavity being formed at the middle of the upper end of the welding base, and a bottom groove being formed at the lower end of the inner cavity. An end slot is provided at the upper end of the welding base and on the outer side of the inner cavity. A bottom retaining ring is fixedly connected to the lower end of the limiting mold. The bottom retaining ring is inserted into the end slot. An inner sliding cavity is provided inside the limiting mold. A base plate is slidably connected inside the inner sliding cavity. An inner top sleeve is fixedly connected to the upper end of the base plate. A No. 4 hydraulic cylinder is provided below the base plate. An end plate is fixedly connected to the upper end of the No. 4 hydraulic cylinder. A spring is fixedly connected between the end plate and the base plate. Depending on the bending process of the guard plate, a pressure plate can be selectively installed on the side of the limiting push plate near the basket frame mold mechanism. The pressure plate pushes the two sides of the guard plate to bring the welding ends closer together for welding. If the welding areas at both ends can be brought closer together after the guard plate is placed on both sides of the limiting mold, it is not necessary to install a pressure plate on the side of the limiting push plate.

[0006] Preferably, a fan is fixedly connected to the upper end of the base plate, and a bottom through groove is opened in the middle of the base plate, which is connected to the fan.

[0007] Preferably, an extension ring is fixedly connected to the lower end of the base plate at the edge of the bottom through groove and to the upper end of the end plate. The upper and lower ends of the spring are respectively sleeved on the two extension rings, and a venting end groove is provided at the upper end of the inner top sleeve.

[0008] Preferably, ventilation chambers are provided through both sides of the inner cavity, and a side slot is provided at one end of each of the two ventilation chambers. A fitting is inserted into the side slot, and a filter screen is fixedly connected inside the fitting.

[0009] Preferably, a reinforcing rib is fixedly connected to one side of the limiting push plate, and the fourth hydraulic cylinder is installed in the bottom groove.

[0010] Preferably, a drive screw is provided at the upper end of the welding base and on both sides of the second mounting base. Mounting brackets are fixedly connected to the middle of both sides of the welding base. One end of the drive screw is rotatably connected to the mounting bracket, and the other end of the drive screw is rotatably connected to the welding base.

[0011] Preferably, a drive motor is fixedly connected to one side of the mounting bracket, and the output end of the drive motor is connected to one end of the drive screw.

[0012] Preferably, an end frame mechanism is provided above the drive screw. The end frame mechanism includes a third hydraulic cylinder. The lower end of the third hydraulic cylinder is fixedly connected to a third mounting base. A connector is installed on the outside of the drive screw. A central groove is opened in the middle of the lower end of the third mounting base. A connecting ear is fixedly connected inside the central groove. The connector is fixedly connected to the connecting ear.

[0013] Preferably, the lower end of the No. 3 mounting base has assembly grooves on both sides of the middle portion, and the assembly grooves are slidably connected to the guide rail. A connecting frame is provided above the welding base, and guide sleeves are fixedly connected to the four corners of the connecting frame. The guide sleeves are sleeved with the No. 3 hydraulic cylinder. A connecting sleeve is fixedly connected to the upper end inside the guide sleeve, and the connecting sleeve is fixedly connected to the upper end of the No. 3 hydraulic cylinder. The lower end of the connecting frame is fixedly connected to the No. 2 welding assembly.

[0014] A welding method for a dishwashing basket rack using an automatic welding device includes the following steps: S1. Control the retraction of hydraulic cylinder No. 4 to move the inner top sleeve downward, place the filter plate at the bottom of the dish rack on the inner top sleeve, and then place the outer guard plate of the dish rack on both sides of the inner top sleeve. S2. Start hydraulic cylinder No. 2 to extend hydraulic cylinder No. 2, restrict the push plate from squeezing the guard plate, and bring the two guard plates closer to each other. Push the filter plate through the guard plates and place the filter plate between the two guard plates. S3. Control the extension of hydraulic cylinder No. 4 to push the filter plate with the inner top sleeve, so that the filter plate contacts and squeezes the bottom of the guard plate; S4. Start hydraulic cylinder No. 1 and hydraulic cylinder No. 3, causing hydraulic cylinder No. 3 to retract and hydraulic cylinder No. 1 to extend, so that welding assembly No. 1 welds between the two guard plates and welding assembly No. 2 welds between the guard plate and the filter plate. S5. Start the fan. Airflow enters from the ventilation chamber and blows towards the protective plate and filter plate to dissipate heat. S6. Hydraulic cylinder No. 3 extends, while hydraulic cylinders No. 1 and No. 2 retract, removing the welded dish rack.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by coordinating the body mechanism and the basket frame mold mechanism, the bent protective plate is placed outside the limiting mold. The limiting push plate then compresses and limits the plate, bringing the welded ends of the protective plate closer together. The No. 4 hydraulic cylinder and the inner top sleeve bring the filter tray and the end of the protective plate into contact. This allows for one-time welding of the sides and ends, resulting in higher welding efficiency and greater ease of use. This reduces the equipment's footprint and lowers operating costs. The spring mechanism prevents interference with compression, thus avoiding bending of the base plate. This reduces the precision requirements for the No. 4 hydraulic cylinder's extension, further reducing costs. The bottom retaining ring facilitates quick and easy disassembly and replacement of the limiting mold. Furthermore, different sizes of limiting molds can be selectively installed as needed. Combined with the inner top sleeve, it can be used to weld different sizes of dishwasher baskets.

[0016] 2. In this invention, the fan and ventilation chamber allow airflow after welding, which lowers the temperature at the welded joint of the dish rack, facilitating the unloading of the dish rack. The ventilation end slot allows airflow from the side, ensuring heat dissipation at the welded joint on the side, thus facilitating subsequent handling and operation of the dish rack. The extended protruding ring restricts the position of the spring, ensuring its stability during use and preventing displacement.

[0017] 3. In this invention, the drive screw is used to drive the No. 3 mounting base to move, so as to adjust the welding position according to the different dish racks. The guide sleeve is sleeved with the outer surface of the No. 3 hydraulic cylinder, which can restrict the movement direction of the connecting frame when the No. 3 hydraulic cylinder extends and retracts, making the movement of the connecting frame more stable. The assembly groove restricts the movement direction of the No. 3 mounting base, increasing the movement stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the welding state of an automatic welding device and welding method for a dish rack according to the present invention; Figure 2 This is a three-dimensional structural schematic diagram of an automatic welding device and welding method for a dishwashing basket rack according to the present invention; Figure 3 This is an exploded view of an automatic welding device and welding method for a dish rack according to the present invention. Figure 4 This is a three-dimensional structural diagram of the machine body mechanism in the automatic welding equipment and welding method for a dishwashing basket rack of the present invention; Figure 5 This is a schematic cross-sectional view of the connection structure of the basket frame mold mechanism in the automatic welding equipment and welding method for a dishwashing basket frame of the present invention. Figure 6This is a schematic diagram of the connecting frame in the automatic welding equipment and welding method for a dish rack according to the present invention; Figure 7 This is a schematic diagram of the connection structure between hydraulic cylinder No. 3 and mounting base No. 3 in an automatic welding equipment and welding method for a dish rack according to the present invention.

[0019] In the picture: 1. Body structure; 11. Welded base; 12. Mounting seat No. 1; 13. Mounting seat No. 2; 14. Hydraulic cylinder No. 1; 15. Hydraulic cylinder No. 2; 16. Welding assembly No. 1; 17. Restricting push plate; 18. Reinforcing rib; 19. Drive motor; 110. Mounting bracket; 111. Drive screw; 112. Guide rail; 113. Filter screen; 114. Assembly kit; 115. Vent chamber; 116. Side slot; 2. End frame mechanism; 21. Hydraulic cylinder No. 3; 22. Mounting base No. 3; 23. Guide sleeve; 24. Connecting frame; 25. Welding assembly No. 2; 26. Connecting sleeve; 27. Assembly slide; 28. Middle slot; 29. ​​Connecting piece; 210. Connecting lug; 3. Basketball frame mold mechanism; 31. Inner top sleeve; 32. Restriction mold; 33. Inner cavity; 34. End slot; 35. Bottom groove; 36. Bottom retaining ring; 37. End plate; 38. No. 4 hydraulic cylinder; 39. Spring; 310. Ventilation end groove; 311. Base plate; 312. Bottom through groove; 313. Extension convex ring; 314. Fan; 315. Inner sliding cavity. Detailed Implementation

[0020] 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, and 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.

[0021] Example 1: Refer to Figure 1 - Figure 5The following describes an automatic welding device and method for a dish rack: The device includes a body mechanism 1, which includes a welding base 11. A rack mold mechanism 3 is located at the middle of the upper end of the welding base 11. The rack mold mechanism 3 includes a limiting mold 32. A first mounting seat 12 is fixedly connected to the middle of both sides of the upper end of the welding base 11. A second mounting seat 13 is fixedly connected to the middle of the other two sides of the upper end of the welding base 11. A first hydraulic cylinder 14 is fixedly connected to the upper end of the first mounting seat 12. A first welding assembly 16 is fixedly connected to the output end of the first hydraulic cylinder 14. A second hydraulic cylinder 15 is fixedly connected to the upper end of the second mounting seat 13. A limiting push plate 17 is fixedly connected to the output end of the second hydraulic cylinder 15. An inner cavity 33 is formed in the middle of the upper end of the welding base 11. A bottom groove 35 is formed at the lower end of the inner cavity 33. The upper end of the welding base 11 is located within the inner cavity 33. An end slot 34 is provided on the outer side of the limiting mold 32. A bottom retaining ring 36 is fixedly connected to the lower end of the limiting mold 32. The bottom retaining ring 36 is inserted into the end slot 34. An inner sliding cavity 315 is provided inside the limiting mold 32. A base plate 311 is slidably connected inside the inner sliding cavity 315. An inner top sleeve 31 is fixedly connected to the upper end of the base plate 311. A fourth hydraulic cylinder 38 is provided below the base plate 311. An end plate 37 is fixedly connected to the upper end of the fourth hydraulic cylinder 38. A spring 39 is fixedly connected between the end plate 37 and the base plate 311. Depending on the bending process of the guard plate, a pressure plate can be selectively installed on the side of the limiting push plate 17 near the basket frame mold mechanism 3. The pressure plate pushes the two sides of the guard plate to bring the welding ends closer together for welding. If the welding areas at both ends can be brought closer together after the guard plate is placed on both sides of the limiting mold 32, it is not necessary to install a pressure plate on the side of the limiting push plate 17.

[0022] In this invention, the bending and forming protective plate is placed outside the limiting mold 32 by the cooperation of the body mechanism 1 and the basket frame mold mechanism 3. The limiting push plate 17 is used to squeeze and limit the plate, so that the welding ends of the protective plate are brought close to each other. The filter basket and the end of the protective plate are brought into contact by the No. 4 hydraulic cylinder 38 and the inner top sleeve 31. In this way, the side and the end can be welded at one time, which is more efficient and more convenient to use. This reduces the footprint of the equipment and reduces the cost of use. The spring 39 is used to avoid affecting the extrusion, thus preventing the bottom plate 311 from being squeezed and bent. This reduces the precision requirement for the extension of the No. 4 hydraulic cylinder 38 and further reduces the cost. The bottom retaining ring 36 makes the disassembly and replacement of the limiting mold 32 quick and convenient. At the same time, different sizes of limiting molds 32 can be selectively installed for use as needed. With the inner top sleeve 31, it can be adapted to different sizes of dishwashing baskets for welding processing.

[0023] Example 2: Figure 1 - Figure 5As shown, a fan 314 is fixedly connected to the upper end of the base plate 311. A bottom through groove 312 is opened in the middle of the base plate 311, which is connected to the fan 314. An extension protrusion ring 313 is fixedly connected to the lower end of the base plate 311 and the edge of the bottom through groove 312, as well as to the upper end of the end plate 37. The upper and lower ends of the spring 39 are respectively sleeved on the two extension protrusion rings 313. A ventilation end groove 310 is opened at the upper end of the inner top sleeve 31. Ventilation chambers 115 are opened through both sides of the inner cavity 33. A side slot 116 is opened at one end of each of the two ventilation chambers 115. A fitting 114 is inserted into the side slot 116. A filter screen 113 is fixedly connected inside the fitting 114. A reinforcing rib 18 is fixedly connected to one side of the limiting push plate 17. The fourth hydraulic cylinder 38 is installed in the bottom groove 35.

[0024] In this invention, the fan 314 and the ventilation chamber 115 allow airflow after welding, which lowers the temperature at the welded joint of the dish rack, facilitating the unloading of the dish rack. The ventilation end slot 310 allows airflow from the side, ensuring that the welded joint on the side can also dissipate heat, thus facilitating subsequent operations such as holding the dish rack and making it convenient to use. The extended protruding ring 313 is used to restrict the position of the spring 39, ensuring the stability of the spring 39 during use and preventing displacement.

[0025] Example 3: According to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, drive screws 111 are provided on both sides of the upper end of the welding base 11 and on both sides of the second mounting base 13. Mounting brackets 110 are fixedly connected to the middle of both sides of the welding base 11. One end of the drive screw 111 is rotatably connected to the mounting bracket 110, and the other end of the drive screw 111 is rotatably connected to the welding base 11. A drive motor 19 is fixedly connected to one side of the mounting bracket 110. The output end of the drive motor 19 is connected to one end of the drive screw 111. An end frame mechanism 2 is provided above the drive screw 111. The end frame mechanism 2 includes a third hydraulic cylinder 21. The lower end of the third hydraulic cylinder 21 is fixedly connected to a third mounting base 22. The outer side of the drive screw 111 is mounted on... The mounting base 22 is equipped with a connector 29. A central groove 28 is provided in the middle of the lower end of the mounting base 22. A connecting ear 210 is fixedly connected inside the central groove 28. The connector 29 is fixedly connected to the connecting ear 210. Assembly slide grooves 27 are provided on both sides of the middle of the lower end of the mounting base 22. The assembly slide grooves 27 are slidably connected to the guide rail 112. A connecting frame 24 is provided above the welding base 11. Guide sleeves 23 are fixedly connected to the four corners of the connecting frame 24. The guide sleeves 23 are sleeved with the hydraulic cylinder 21. A connecting sleeve 26 is fixedly connected to the upper end of the guide sleeve 23. The connecting sleeve 26 is fixedly connected to the upper end of the hydraulic cylinder 21. The welding assembly 25 is fixedly connected to the lower end of the connecting frame 24.

[0026] In this invention, the drive screw 111 is used to drive the third mounting base 22 to move, so as to adjust the welding position according to the different dish racks. The guide sleeve 23 is sleeved with the outer surface of the third hydraulic cylinder 21, which can restrict the movement direction of the connecting frame 24 when the third hydraulic cylinder 21 extends and retracts, making the movement of the connecting frame 24 more stable. The assembly groove 27 restricts the movement direction of the third mounting base 22, increasing the movement stability.

[0027] Example 4: A welding method using an automatic welding device for a dishwashing basket rack, comprising the following steps: Step 1: Control the retraction of hydraulic cylinder 38 to move the inner top sleeve 31 downward, place the filter plate at the bottom of the dish rack on the inner top sleeve 31, and then place the outer guard plate of the dish rack on both sides of the inner top sleeve 31. Step 2: Start hydraulic cylinder 15 to extend it, restrict the push plate 17 from squeezing the guard plate, so that the two guard plates are brought closer to each other, and push the filter plate through the guard plates so that the filter plate is located between the two guard plates. Step 3: Control the extension of hydraulic cylinder 38 to push the filter plate with the inner top sleeve 31, so that the filter plate contacts and squeezes the bottom of the guard plate. Step 4: Start hydraulic cylinder 14 and hydraulic cylinder 21, causing hydraulic cylinder 21 to retract and hydraulic cylinder 14 to extend, so that welding assembly 16 welds the two guard plates together and welding assembly 25 welds the guard plate to the filter plate. Step 5: Start the fan 314. The airflow enters from the ventilation chamber 115 and blows towards the protective plate and filter plate to dissipate heat. Step 6: Extend hydraulic cylinder 21 (number 3), retract hydraulic cylinders 14 (number 1) and 15 (number 2), and remove the welded dish rack.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic welding device for a dishwashing basket rack, comprising a body mechanism (1), characterized in that, The body mechanism (1) includes a welding base (11). A basket frame mold mechanism (3) is provided at the middle of the upper end of the welding base (11). The basket frame mold mechanism (3) includes a limiting mold (32). A first mounting seat (12) is fixedly connected to the middle of both sides of the upper end of the welding base (11). A second mounting seat (13) is fixedly connected to the middle of the other two sides of the upper end of the welding base (11). A first hydraulic cylinder (14) is fixedly connected to the upper end of the first mounting seat (12). A first welding assembly (16) is fixedly connected to the output end of the first hydraulic cylinder (14). A second hydraulic cylinder (15) is fixedly connected to the upper end of the second mounting seat (13). A limiting push plate (17) is fixedly connected to the output end of the second hydraulic cylinder (15). The upper middle of the welding base (11) is open An inner cavity (33) is provided, and a bottom groove (35) is provided at the lower end of the inner cavity (33). An end slot (34) is provided at the upper end of the welding base (11) and outside the inner cavity (33). A bottom retaining ring (36) is fixedly connected to the lower end of the limiting mold (32). The bottom retaining ring (36) is inserted into the end slot (34). An inner sliding cavity (315) is provided inside the limiting mold (32). A base plate (311) is slidably connected inside the inner sliding cavity (315). An inner top sleeve (31) is fixedly connected to the upper end of the base plate (311). A fourth hydraulic cylinder (38) is provided below the base plate (311). An end plate (37) is fixedly connected to the upper end of the fourth hydraulic cylinder (38). A spring (39) is fixedly connected between the end plate (37) and the base plate (311).

2. The automatic welding equipment for a dishwashing basket rack according to claim 1, characterized in that: A fan (314) is fixedly connected to the upper end of the base plate (311), and a bottom through groove (312) is provided in the middle of the base plate (311), which is connected to the fan (314).

3. The automatic welding equipment for a dishwashing basket rack according to claim 2, characterized in that: The lower end of the base plate (311) and the edge of the bottom through groove (312) and the upper end of the end plate (37) are both fixedly connected with extension rings (313). The upper and lower ends of the spring (39) are respectively sleeved on the two extension rings (313). The upper end of the inner top sleeve (31) is provided with a ventilation end groove (310).

4. The automatic welding equipment for a dishwashing basket rack according to claim 3, characterized in that: Ventilation chambers (115) are provided through both sides of the inner cavity (33). A side slot (116) is provided at one end of each of the two ventilation chambers (115). A fitting (114) is inserted into the side slot (116), and a filter screen (113) is fixedly connected inside the fitting (114).

5. The automatic welding equipment for a dishwashing basket rack according to claim 4, characterized in that: A reinforcing rib (18) is fixedly connected to one side of the limiting push plate (17), and the fourth hydraulic cylinder (38) is installed in the bottom groove (35).

6. The automatic welding equipment for a dishwashing basket rack according to claim 5, characterized in that: A drive screw (111) is provided on the upper end of the welding base (11) and on both sides of the second mounting base (13). Mounting brackets (110) are fixedly connected to the middle of both sides of the welding base (11). One end of the drive screw (111) is rotatably connected to the mounting bracket (110), and the other end of the drive screw (111) is rotatably connected to the welding base (11).

7. The automatic welding equipment for a dishwashing basket rack according to claim 6, characterized in that: A drive motor (19) is fixedly connected to one side of the mounting bracket (110), and the output end of the drive motor (19) is connected to one end of the drive screw (111) for transmission.

8. The automatic welding equipment for a dishwashing basket rack according to claim 7, characterized in that: An end frame mechanism (2) is provided above the drive screw (111). The end frame mechanism (2) includes a third hydraulic cylinder (21). The lower end of the third hydraulic cylinder (21) is fixedly connected to a third mounting base (22). A connector (29) is installed on the outside of the drive screw (111). A middle groove (28) is opened in the middle of the lower end of the third mounting base (22). A connecting ear (210) is fixedly connected inside the middle groove (28). The connector (29) is fixedly connected to the connecting ear (210).

9. The automatic welding equipment for a dishwashing basket rack according to claim 8, characterized in that: The lower end of the No. 3 mounting base (22) is provided with assembly grooves (27) on both sides of the middle part. The assembly grooves (27) are slidably connected to the guide rail (112). A connecting frame (24) is provided above the welding base (11). A guide sleeve (23) is fixedly connected to each of the four corners of the connecting frame (24). The guide sleeve (23) is sleeved with the No. 3 hydraulic cylinder (21). A connecting sleeve (26) is fixedly connected to the upper end inside the guide sleeve (23). The connecting sleeve (26) is fixedly connected to the upper end of the No. 3 hydraulic cylinder (21). The lower end of the connecting frame (24) is fixedly connected to the No. 2 welding assembly (25).

10. A welding method for an automatic welding device for a dishwashing basket rack, characterized in that: The automatic welding equipment for a dishwashing basket rack according to any one of claims 1-9 includes the following steps: S1. Control the retraction of hydraulic cylinder No. 4 (38) to move the inner top sleeve (31) downward, place the filter plate at the bottom of the dish rack on the inner top sleeve (31), and then place the outer guard plate of the dish rack on both sides of the inner top sleeve (31). S2. Start the second hydraulic cylinder (15) to extend the second hydraulic cylinder (15), restrict the push plate (17) from squeezing the guard plate, so that the two guard plates are close to each other, and push the filter plate through the guard plate to make the filter plate be positioned between the two guard plates. S3. Control the extension of hydraulic cylinder No. 4 (38) to push the filter plate with the inner top sleeve (31) so that the filter plate contacts and squeezes the bottom of the guard plate; S4. Start hydraulic cylinder No. 1 (14) and hydraulic cylinder No. 3 (21), causing hydraulic cylinder No. 3 (21) to retract and hydraulic cylinder No. 1 (14) to extend, so that welding assembly No. 1 (16) welds the two guard plates together and welding assembly No. 2 (25) welds the guard plate to the filter plate. S5. Start the fan (314). The airflow enters from the ventilation chamber (115) and blows towards the guard plate and filter plate to dissipate heat. S6. The third hydraulic cylinder (21) extends, and the first hydraulic cylinder (14) and the second hydraulic cylinder (15) retract, taking out the welded dish rack.

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