Welding machine for inner container of dish washing machine

Abstract

The welding machine comprises a rack, a machining table, a seam welder and a square column, the machining table is fixedly connected to the top of the rack, the seam welder is arranged on the rear side of the top of the machining table, the square column is fixedly connected to the middle of the top of the machining table, and the left side and the right side of the top of the machining table are each fixedly connected with two sliding rails. The machine frame, the machining table, the seam welder, the square column, the sliding rail, the movable platform device, the sliding hole, the frame, a groove, a clamping device, a containing groove, a pressing device, a telescopic column, a rubber plate, a limiting block, an auxiliary plate, a transmission rod, a stroke hole, a supporting frame and a third electric cylinder are used in cooperation. The problems that in the welding process of the inner containers, if the edge warping condition or the non-alignment condition occurs, the welding effect can be affected, gaps exist between the inner containers, and the sealing performance of the inner containers is affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of dishwasher inner tank processing, and in particular relates to a dishwasher inner tank welding machine. Background Art

[0002] The inner tank of a dishwasher is an important part of the dishwasher. Its material and design directly affect the cleaning effect, service life and sanitary conditions of the dishwasher. The material used for the inner tank can be stainless steel, plastic or stainless steel + plastic combination. The dishwasher inner tank welding machine plays a vital role in the manufacturing process of dishwashers. The welding machine melts the joints of the inner tank components to achieve seamless connection, thereby ensuring the integrity and stability of the inner tank structure. This is crucial to the overall performance and durability of the dishwasher, because the inner tank is one of the core components of the dishwasher and needs to withstand changes in water pressure, temperature and other factors during the washing process. The welding machine ensures the welding quality by precisely controlling the welding temperature and time, thereby achieving high sealing of the inner tank, so that the inner tank has good sealing to prevent leakage of liquids such as water and detergent during the washing process.

[0003] The problem with the prior art is that if the inner liner is warped or misaligned during the welding process, the welding effect will be affected, resulting in gaps between the inner liner and affecting its sealing. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a dishwasher inner tank welding machine, which has the advantage of fixing the welded inner tank, and solves the problem that if the inner tank is warped or misaligned during the welding process, it will affect the welding effect, cause gaps between the inner tanks, and affect their sealing.

[0005] The present invention is implemented as follows: a dishwasher liner welding machine includes a frame, a processing table, a roll welding machine and a square column, wherein the processing table is fixedly connected to the top of the frame, the roll welding machine is arranged on the rear side of the top of the processing table, the square column is fixedly connected to the middle of the top of the processing table, two slide rails are fixedly connected to the left and right sides of the top of the processing table, a mobile platform device is slidably connected to the top of the two slide rails, a slide hole is opened on the surface of the processing table and located between the two slide rails, and one end of the mobile platform device passes through the surface of the processing table and extends out of the slide hole.

[0006] As preferred embodiment of the present invention, the moving platform device includes two sliding blocks, a connecting cross bar, a placement platform, a transmission vertical rod, a pushing plate, two placement racks and two first electric cylinders, the two sliding blocks are respectively slidably connected to the surface of the two slide rails, the connecting cross bar is fixedly connected to the top of the two sliding blocks, the placement platform is fixedly connected to the top of the connecting cross bar, the transmission vertical rod is fixedly connected to the bottom of the connecting cross bar, and the transmission vertical rod passes through and extends out of the sliding hole, the pushing plate is fixedly connected to the side of the two transmission vertical rods away from each other, the two placement racks are both fixedly connected to the bottom of the processing table, the two first electric cylinders are respectively fixedly connected to the top of the two placement racks, and the output end of the first electric cylinder is fixedly connected to the surface of the pushing plate.

[0007] As a preferred embodiment of the present invention, the top of the placing platform is fixedly connected to a frame, grooves are provided on the left and right sides of the frame, a clamping device is fixedly connected to the side of the top of the placing platform away from the square column, a plurality of placing grooves are equidistantly provided on the side of the top of the frame close to the square column, and a clamping device is provided inside the placing grooves.

[0008] As a preferred embodiment of the present invention, the clamping device includes a second electric cylinder, a vertical plate, three push columns and a movable plate, the second electric cylinder is fixedly connected to the top of the placement platform, the vertical plate is fixedly connected to the output end of the second electric cylinder, the three push columns are equidistantly fixedly connected to the surface of the vertical plate close to the frame side, and the three push columns all penetrate the surface of the frame and extend to the inside of the groove on the other side of the frame, the movable plate is arranged inside the groove on the other side of the frame, and is fixedly connected to the surfaces of the three push columns penetrating therein.

[0009] As a preferred embodiment of the present invention, the clamping device includes a screw rod, a connecting block, a lifting plate, a sprocket, a chain, a driving motor and a motor bracket, the screw rod is rotatably connected to the inside of the placement slot, and the number of the screw rods is the same as the number of placement slots, the connecting block is threadedly connected to the surface of the screw rod, the lifting plate is fixedly connected to the surface of the connecting block, the sprocket is rotatably connected to the top of the screw rod, and the number of sprockets is the same as the screw rod, the chain is sleeved on the surfaces of all sprockets and meshed with them, the motor bracket is fixedly connected to the middle part of the top of the frame, the driving motor is fixedly connected to the surface of the motor bracket, and the output end of the driving motor is fixedly connected to the sprocket.

[0010] As a preferred embodiment of the present invention, four telescopic columns are fixedly connected inside the groove opened in the frame close to the square column, and the four telescopic columns are respectively located at the four corners inside the groove, the other end of the telescopic column is fixedly connected to the movable plate, and a rubber plate is fixedly connected to one side of the movable plate surface close to the square column.

[0011] As a preferred embodiment of the present invention, two limiting blocks are fixedly connected to the front side of the top of the processing table, and the tops of the two limiting blocks are slidably connected with auxiliary plates, the bottoms of the auxiliary plates are fixedly connected with transmission rods, and the bottom of the transmission rods penetrates and extends out of the surface of the processing table, and the surface of the processing table is provided with travel holes for use with the transmission rods, the bottom of the processing table is fixedly connected with a support frame, the top of the support frame is fixedly connected with a third electric cylinder, and the output end of the third electric cylinder is fixedly connected to the transmission rod.

[0012] As a preferred embodiment of the present invention, the square column has the same size as the inner liner plate to be welded, and the inner liner plate needs to be fitted with the square column during welding. The clamping device and the pressing device can fix the welded inner liner plate and will not interfere with the welding work of the rolling welder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention solves the problem that if the inner liner is warped or misaligned during the welding process, it will affect the welding effect, cause gaps between the inner liner, and affect its sealing, by arranging a frame, a processing table, a rolling welder, a square column, a slide rail, a mobile platform device, a slide hole, a frame, a groove, a clamping device, a placement slot, a clamping device, a telescopic column, a rubber plate, a limiting block, an auxiliary plate, a transmission rod, a stroke hole, a support frame and the coordinated use of the third electric cylinder.

[0015] 2. The present invention provides a mobile platform device, which can drive the placement platform to move by starting the first electric cylinder, and then drive the clamping device and the pressing device to move through its movement, and then fix the inner liner plate to be welded.

[0016] 3. The present invention can provide a placement position for the clamping device and the pressing device by setting a frame, a groove and a placement groove, and then the inner liner plate to be welded is fixed by the two.

[0017] 4. The present invention can clamp the inner liner plate placed on the surface of the square column by providing a clamping device, so that it fits with the square column and avoids rebound of the inner liner plate during welding.

[0018] 5. The present invention can compress the welded inner liner plate by arranging a clamping device to avoid the inner liner plate from warping during the welding process, thereby affecting the welding effect.

[0019] 6. The present invention provides telescopic columns and rubber plates, which can assist in limiting the movement of the movable plate through the telescopic columns to prevent the movable plate from detaching, while the rubber plates can reduce the contact force between the movable plate and the inner liner plate to prevent the inner liner plate from being squeezed out.

[0020] 7. The present invention provides a limiting block, an auxiliary plate and a third electric cylinder. The third electric cylinder can drive the auxiliary plate to slide on the surface of the limiting block, and then squeeze the inner single plate, so as to avoid bulging of the inner liner plate during welding.

[0021] 8. The present invention can restrict the welded inner liner plate by setting the square column, and can restrict the inner liner plate after it is attached to the square column, so as to avoid the movement of the inner liner plate during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of an inner tank welding machine provided by an embodiment of the present invention;

[0023] Figure 2 It is a three-dimensional schematic diagram of a processing table provided by an embodiment of the present invention when viewed from above;

[0024] Figure 3 It is a three-dimensional schematic diagram of a placement platform and a part of a clamping device provided by an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of the three-dimensional structure of a pressing device provided by an embodiment of the present invention;

[0026] Figure 5 The embodiment of the present invention provides Figure 4 A partial enlarged view of the middle A;

[0027] Figure 6 is a three-dimensional schematic diagram of the internal structure of the frame and the groove provided by an embodiment of the present invention;

[0028] Figure 7 It is a three-dimensional schematic diagram of a limiting block, an auxiliary plate and a third electric cylinder provided by an embodiment of the present invention.

[0029] In the figure: 1, frame; 2, processing table; 3, seam welding machine; 4, square column; 5, slide rail; 6, mobile platform device; 601, sliding block; 602, connecting cross bar; 603, placement platform; 604, transmission vertical rod; 605, push plate; 606, placement rack; 607, first electric cylinder; 7, sliding hole; 8, frame; 9, groove; 10, clamping device; 1001, second electric cylinder; 1002, vertical plate; 1003, Push column; 1004, moving plate; 11, placement groove; 12, clamping device; 1201, screw rod; 1202, connecting block; 1203, lifting plate; 1204, sprocket; 1205, chain; 1206, driving motor; 1207, motor bracket; 13, telescopic column; 14, rubber plate; 15, limiting block; 16, auxiliary plate; 17, transmission rod; 18, travel hole; 19, support frame; 20, third electric cylinder. DETAILED DESCRIPTION

[0030] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0031] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 7 As shown, a dishwasher liner welding machine provided by an embodiment of the present invention includes a frame 1, a processing table 2, a seam welder 3 and a square column 4, the processing table 2 is fixedly connected to the top of the frame 1, the seam welder 3 is arranged on the rear side of the top of the processing table 2, the square column 4 is fixedly connected to the middle of the top of the processing table 2, two slide rails 5 are fixedly connected to the left and right sides of the top of the processing table 2, a mobile platform device 6 is slidably connected to the top of the two slide rails 5, a slide hole 7 is opened on the surface of the processing table 2 and is located between the two slide rails 5, and one end of the mobile platform device 6 passes through the surface of the processing table 2 and extends out of the slide hole 7.

[0033] refer to Figure 1 , Figure 2 and Figure 3 The mobile platform device 6 includes two sliding blocks 601, a connecting cross bar 602, a placement platform 603, a transmission vertical rod 604, a pushing plate 605, two placement racks 606 and two first electric cylinders 607. The two sliding blocks 601 are respectively slidably connected to the surfaces of the two slide rails 5, the connecting cross bar 602 is fixedly connected to the top of the two sliding blocks 601, the placement platform 603 is fixedly connected to the top of the connecting cross bar 602, the transmission vertical rod 604 is fixedly connected to the bottom of the connecting cross bar 602, and the transmission vertical rod 604 passes through and extends out of the sliding hole 7, the pushing plate 605 is fixedly connected to the side of the two transmission vertical rods 604 away from each other, the two placement racks 606 are both fixedly connected to the bottom of the processing table 2, the two first electric cylinders 607 are respectively fixedly connected to the top of the two placement racks 606, and the output end of the first electric cylinder 607 is fixedly connected to the surface of the pushing plate 605.

[0034] The above scheme is adopted: by setting up a mobile platform device 6, the placement platform 603 can be driven to move by starting the first electric cylinder 607, and then the clamping device 10 and the pressing device 12 can be driven to move through its movement, and then the inner liner plate to be welded can be fixed.

[0035] refer to Figure 1 , Figure 3 and Figure 4 The top of the placement platform 603 is fixedly connected to a frame 8, and grooves 9 are provided on both the left and right sides of the frame 8. A clamping device 10 is fixedly connected to the side of the top of the placement platform 603 away from the square column 4, and a plurality of placement grooves 11 are equidistantly provided on the side of the top of the frame 8 close to the square column 4, and a clamping device 12 is provided inside the placement grooves 11.

[0036] The above solution is adopted: by setting the frame 8, the groove 9 and the placement groove 11, it is possible to provide placement positions for the clamping device 10 and the pressing device 12, and then the inner liner plate to be welded can be fixed by the two.

[0037] refer to Figure 3 and Figure 6 The clamping device 10 includes a second electric cylinder 1001, a vertical plate 1002, three push columns 1003 and a movable plate 1004. The second electric cylinder 1001 is fixedly connected to the top of the placement platform 603. The vertical plate 1002 is fixedly connected to the output end of the second electric cylinder 1001. The three push columns 1003 are equidistantly fixedly connected to the surface of the vertical plate 1002 close to the frame 8. The three push columns 1003 all penetrate the surface of the frame 8 and extend to the inside of the groove 9 on the other side of the frame 8. The movable plate 1004 is arranged inside the groove 9 on the other side of the frame 8 and is fixedly connected to the surfaces of the three push columns 1003 that penetrate therethrough.

[0038] By adopting the above solution, the inner liner plate placed on the surface of the square column 4 can be clamped by providing the clamping device 10, so that it fits with the square column 4, thereby avoiding rebound of the inner liner plate during welding.

[0039] refer to Figure 4 and Figure 5 The clamping device 12 includes a screw rod 1201, a connecting block 1202, a lifting plate 1203, a sprocket 1204, a chain 1205, a drive motor 1206 and a motor bracket 1207. The screw rod 1201 is rotatably connected to the inside of the placement groove 11, and the number of the screw rods 1201 is the same as the number of placement grooves 11. The connecting block 1202 is threadedly connected to the surface of the screw rod 1201, the lifting plate 1203 is fixedly connected to the surface of the connecting block 1202, the sprocket 1204 is rotatably connected to the top of the screw rod 1201, and the number of the sprocket 1204 is the same as the screw rod 1201, the chain 1205 is sleeved on the surfaces of all the sprockets 1204 and meshed with them, the motor bracket 1207 is fixedly connected to the middle of the top of the frame 8, the drive motor 1206 is fixedly connected to the surface of the motor bracket 1207, and the output end of the drive motor 1206 is fixedly connected to the sprocket 1204.

[0040] The above solution is adopted: by providing the pressing device 12, the welded inner liner plate can be pressed to avoid the inner liner plate from warping during the welding process, thereby affecting the welding effect.

[0041] refer to Figure 6 Four telescopic columns 13 are fixedly connected inside the groove 9 opened by the frame 8 near the square column 4, and the four telescopic columns 13 are respectively located at the four corners inside the groove 9, and the other end of the telescopic column 13 is fixedly connected to the movable plate 1004, and a rubber plate 14 is fixedly connected to one side of the surface of the movable plate 1004 near the square column 4.

[0042] The above scheme is adopted: by setting the telescopic column 13 and the rubber plate 14, the telescopic column 13 can be used to assist in limiting the movement of the movable plate 1004 to prevent the movable plate 1004 from detaching, and the rubber plate 14 can reduce the contact force between the movable plate 1004 and the inner liner plate to prevent the inner liner plate from being squeezed out.

[0043] refer to Figure 1 , Figure 2 and Figure 7 Two limiting blocks 15 are fixedly connected to the front side of the top of the processing table 2, and an auxiliary plate 16 is slidably connected to the top of the two limiting blocks 15. A transmission rod 17 is fixedly connected to the bottom of the auxiliary plate 16, and the bottom of the transmission rod 17 passes through and extends out of the surface of the processing table 2. A travel hole 18 for use with the transmission rod 17 is opened on the surface of the processing table 2. A support frame 19 is fixedly connected to the bottom of the processing table 2, and a third electric cylinder 20 is fixedly connected to the top of the support frame 19, and the output end of the third electric cylinder 20 is fixedly connected to the transmission rod 17.

[0044] The above scheme is adopted: by setting the limiting block 15, the auxiliary plate 16 and the third electric cylinder 20, the auxiliary plate 16 can be driven by the third electric cylinder 20 to slide on the surface of the limiting block 15, and then the inner single plate is squeezed, so as to avoid bulging of the inner liner plate during welding.

[0045] refer to Figure 1 The square column 4 has the same size as the inner liner plate to be welded, and the inner liner plate needs to be fitted with the square column 4 during welding. The clamping device 10 and the pressing device 12 can fix the welded inner liner plate and will not interfere with the welding work of the seam welder 3.

[0046] The above solution is adopted: by setting the square column 4, the welded inner liner plate can be restricted, and the inner liner plate can be restricted after being attached to the square column 4, so as to avoid the movement of the inner liner plate during welding.

[0047] Working principle of the present invention:

[0048] When in use, the inner liner plate to be welded is fitted with the square column 4, and then the first electric cylinder 607 is started. The first electric cylinder 607 drives the push plate 605 to move. When the push plate 605 moves, it drives the transmission vertical rod 604 to move. Then, the movement of the transmission vertical rod 604 drives the connecting cross bar 602 and the placement platform 603 to move. When the two move, they will drive the sliding block 601 to move on the surface of the slide rail 5. At this time, the placement platform 603 moves to the side close to the square column 4, and then the third electric cylinder 20 is started. The third electric cylinder 20 drives the transmission rod 17 to move, and then drives the auxiliary plate 16 to move on the surface of the limiting block 15 through the transmission rod 17. At this time, the auxiliary plate 16 is fitted with the surface of the inner liner plate and is pushed to the square column 4 and fits the surface of the square column 4. At this time, the second electric cylinder 1001 is started. The second electric cylinder 1001 drives the vertical rod 17 to move. The plate 1002 and the three pushing columns 1003 are moved, and then the moving plate 1004 is driven to move by the movement of the pushing column 1003, and then the inner liner plate is clamped by the moving plate 1004. At this time, the three surfaces of the inner liner plate are positioned, and then the inner liner plate to be welded is placed on the top of the square column 4 and the position is determined, and then the driving motor 1206 is started, and the driving motor 1206 drives the sprocket 1204 to rotate, and then the sprocket 1204 drives the remaining sprockets 1204 to rotate through the chain 1205, thereby driving all the screw rods 1201 to rotate, and when the screw rod 1201 rotates, it can drive the threaded connection block 1202 to move, and then the movement of the connection block 1202 drives the lifting plate 1203 to move, and at this time, the lifting plate 1203 presses another inner liner plate, and then the rolling welding machine 3 can be started to weld it.

[0049] In summary: the dishwasher liner welding machine, through the arrangement of a frame 1, a processing table 2, a rolling welder 3, a square column 4, a slide rail 5, a mobile platform device 6, a slide hole 7, a frame 8, a groove 9, a clamping device 10, a placement slot 11, a clamping device 12, a telescopic column 13, a rubber plate 14, a limiting block 15, an auxiliary plate 16, a transmission rod 17, a stroke hole 18, a support frame 19 and a third electric cylinder 20, solves the problem that if the liner is warped or misaligned during the welding process, it will affect the effect after welding, resulting in gaps between the liner and affecting its sealing.

[0050] It should be noted that the first electric cylinder, the second electric cylinder, the third electric cylinder, the drive motor and the seam welder are all devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art, and the specific composition and principle of the power supply of the first electric cylinder, the second electric cylinder, the third electric cylinder, the drive motor and the seam welder are clear to those skilled in the art, so they will not be described in detail.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dishwasher liner welding machine, comprising a frame (1), a processing table (2), a seam welding machine (3) and a square column (4), characterized in that: The processing table (2) is fixedly connected to the top of the frame (1); the rolling welder (3) is arranged on the rear side of the top of the processing table (2); the square column (4) is fixedly connected to the middle of the top of the processing table (2); two slide rails (5) are fixedly connected to the left and right sides of the top of the processing table (2); the tops of the two slide rails (5) are slidably connected to a mobile platform device (6); a sliding hole (7) is opened on the surface of the processing table (2) and is located between the two slide rails (5); one end of the mobile platform device (6) passes through the surface of the processing table (2) and extends out of the sliding hole (7).

2. A dishwasher liner welding machine as claimed in claim 1, characterized in that: The mobile platform device (6) comprises two sliding blocks (601), a connecting cross bar (602), a placement platform (603), a transmission vertical rod (604), a push plate (605), two placement racks (606) and two first electric cylinders (607), the two sliding blocks (601) are respectively slidably connected to the surfaces of the two slide rails (5), the connecting cross bar (602) is fixedly connected to the top of the two sliding blocks (601), the placement platform (603) is fixedly connected to the top of the connecting cross bar (602), and the The transmission vertical rod (604) is fixedly connected to the bottom of the connecting cross rod (602), and the transmission vertical rod (604) passes through and extends out of the sliding hole (7), the pushing plate (605) is fixedly connected to the side of the two transmission vertical rods (604) that is away from each other, the two placement racks (606) are both fixedly connected to the bottom of the processing table (2), the two first electric cylinders (607) are respectively fixedly connected to the top of the two placement racks (606), and the output end of the first electric cylinder (607) is fixedly connected to the surface of the pushing plate (605).

3. A dishwasher liner welding machine as claimed in claim 2, characterized in that: The top of the placement platform (603) is fixedly connected to a frame (8), and grooves (9) are provided on both the left and right sides of the frame (8). A clamping device (10) is fixedly connected to the side of the top of the placement platform (603) away from the square column (4), and a plurality of placement grooves (11) are equidistantly provided on the side of the top of the frame (8) close to the square column (4), and a clamping device (12) is provided inside the placement grooves (11).

4. A dishwasher liner welding machine as claimed in claim 3, characterized in that: The clamping device (10) comprises a second electric cylinder (1001), a vertical plate (1002), three push columns (1003) and a movable plate (1004); the second electric cylinder (1001) is fixedly connected to the top of the placement platform (603); the vertical plate (1002) is fixedly connected to the output end of the second electric cylinder (1001); the three push columns (1003) are equidistantly fixedly connected to the surface of the vertical plate (1002) close to the frame (8); the three push columns (1003) all penetrate the surface of the frame (8) and extend to the inside of the groove (9) on the other side of the frame (8); the movable plate (1004) is arranged inside the groove (9) on the other side of the frame (8) and is fixedly connected to the surfaces of the three push columns (1003) penetrated therethrough.

5. A dishwasher liner welding machine as claimed in claim 3, characterized in that: The pressing device (12) comprises a screw rod (1201), a connecting block (1202), a lifting plate (1203), a sprocket (1204), a chain (1205), a driving motor (1206) and a motor bracket (1207); the screw rod (1201) is rotatably connected to the inside of the placement groove (11), and the number of the screw rods (1201) is the same as the number of the placement grooves (11); the connecting block (1202) is threadedly connected to the surface of the screw rod (1201); and the lifting plate (1203) is fixedly connected to the connecting block. (1202), the sprocket (1204) is rotatably connected to the top of the screw rod (1201), and the number of the sprockets (1204) is the same as the screw rod (1201), the chain (1205) is sleeved on the surfaces of all the sprockets (1204) and meshedly connected therewith, the motor bracket (1207) is fixedly connected to the middle of the top of the frame (8), the drive motor (1206) is fixedly connected to the surface of the motor bracket (1207), and the output end of the drive motor (1206) is fixedly connected to the sprocket (1204).

6. A dishwasher liner welding machine as claimed in claim 3, characterized in that: Four telescopic columns (13) are fixedly connected inside a groove (9) opened near the square column (4) of the frame (8), and the four telescopic columns (13) are respectively located at four corners inside the groove (9), and the other end of the telescopic column (13) is fixedly connected to a movable plate (1004), and a rubber plate (14) is fixedly connected to one side of the surface of the movable plate (1004) near the square column (4).

7. A dishwasher liner welding machine as claimed in claim 1, characterized in that: Two limiting blocks (15) are fixedly connected to the front side of the top of the processing table (2); the tops of the two limiting blocks (15) are slidably connected to auxiliary plates (16); the bottoms of the auxiliary plates (16) are fixedly connected to a transmission rod (17); the bottom of the transmission rod (17) penetrates through and extends out of the surface of the processing table (2); the surface of the processing table (2) is provided with a travel hole (18) for use with the transmission rod (17); the bottom of the processing table (2) is fixedly connected to a support frame (19); the top of the support frame (19) is fixedly connected to a third electric cylinder (20); the output end of the third electric cylinder (20) is fixedly connected to the transmission rod (17).

8. A dishwasher liner welding machine as claimed in claim 3, characterized in that: The square column (4) has the same size as the inner liner plate to be welded, and the inner liner plate needs to be fitted with the square column (4) during welding. The clamping device (10) and the pressing device (12) can fix the welded inner liner plate and will not interfere with the welding work of the rolling welder (3).

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