A seamless welding device for dishwasher inner tank and its processing technology

Abstract

The invention relates to the technical field of welding instruments, and specifically to a seamless welding device for a dishwasher inner tank and a processing technology thereof, comprising a rectangular mounting frame and a welding head movably mounted on the rectangular mounting frame, wherein a slide rail is fixedly mounted on the rectangular mounting frame, and end covers are arranged at both ends of the slide rail, and a rectangular bottom plate is slidably connected to the slide rail, and a lifting shaft is vertically slidably connected to the rectangular bottom plate, and after the rectangular bottom plate stops moving, an assembly plate supports the dishwasher inner tank to prevent the dishwasher inner tank from deflecting due to inertia, and the output shaft of the telescopic rod moves in a movable sleeve with a connecting plate and a pulling rod, and the distance between the assembly plate and the rectangular bottom plate becomes larger to prevent the assembly plate from contacting the dishwasher inner tank, and when the dishwasher inner tank is removed, the assembly plate can support the dishwasher inner tank from the other side to prevent the dishwasher inner tank from deflecting and falling, effectively preventing the welding from being affected by the inner tank deflection, and greatly improving the welding product effect.

Description

Technical Field

[0001] The invention relates to the technical field of welding instruments, in particular to seamless welding equipment for a dishwasher inner tank and a processing technology thereof. Background Art

[0002] Seamless welding equipment is of great significance in the manufacturing of dishwasher inner tanks.

[0003] When the dishwasher inner tank is made, the dishwasher inner tank needs to be welded together, and every link in the welding process needs to be strictly controlled to ensure the welding quality of the dishwasher inner tank.

[0004] When welding the inner tank of a dishwasher, place the inner tank on the welding seat, move it to the designated position, and weld it. During the movement of the inner tank, the stability of the inner tank is ensured by the gravity of the inner tank itself. When the movement of the inner tank stops, the inner tank will be affected by inertia, and there is a risk of displacement, which will affect the subsequent welding effect of the inner tank. Summary of the invention

[0005] The object of the present invention is to provide a seamless welding device for the inner tank of a dishwasher and a processing technology thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a seamless welding device for the inner tank of a dishwasher and a processing technology thereof, comprising a rectangular mounting frame and a welding head movably mounted on the rectangular mounting frame, wherein a slide rail is fixedly mounted on the rectangular mounting frame, and end covers are arranged at both ends of the slide rail, and a rectangular bottom plate is slidably connected to the slide rail, and a lifting shaft is vertically slidably connected to the rectangular bottom plate, and a limit strip is fixedly mounted on the outer wall of the lifting shaft, and the limit strip is also slidably connected to the rectangular bottom plate, and an inner rotating ring is rotatably connected to the outer side of the lifting shaft, and a notched tooth ring is fixedly mounted on the outer wall of the inner rotating ring, and a movable A sleeve, and the movable sleeve is located at the notch position opened on the notch tooth ring, a pull-out rod is movably inserted in the movable sleeve, a placement plate is fixedly installed on the top of the lifting shaft, an assembly frame is fixedly installed on the end of the pull-out rod away from the movable sleeve, an assembly plate is provided on one side of the assembly frame, a stepper motor is provided on the top of the rectangular bottom plate, a driving gear is fixedly installed on the output shaft of the stepper motor, and the driving gear is meshed with the notch tooth ring, a telescopic rod is horizontally fixedly installed in the movable sleeve, a connecting plate is fixedly installed on the end of the piston rod of the telescopic rod located on the outside, and the connecting plate is fixedly installed on the upper surface of the pull-out rod.

[0007] Preferably, the thickness of the driving gear is greater than the thickness of the notched gear ring.

[0008] Preferably, a plurality of telescopic strips are movably connected to the assembly frame, and one end of the telescopic strip is fixedly mounted on the assembly plate, a movable frame is arranged between the plurality of telescopic strips for connection, a fixed shaft seat is fixedly mounted on the side of the assembly frame away from the assembly plate, a positioning screw rod is rotatably connected in the fixed shaft seat, and the positioning screw rod is rotatably connected to the movable frame, and a hand wheel is fixedly mounted on the end of the positioning screw rod away from the fixed shaft seat.

[0009] Preferably, a mounting base plate is movably installed in the assembly plate, a support plate is provided on a side of the mounting base plate away from the assembly plate, a locking bolt is threadedly connected to the assembly plate, and the locking bolt is threadedly installed on the mounting base plate.

[0010] Preferably, the mounting base plate and the support plate are an integrally formed structure.

[0011] Preferably, a fixed ring is fixedly installed at the bottom of the rectangular bottom plate, and the fixed ring movable sleeve is arranged outside the lifting shaft, a first spring is fixedly installed at the bottom of the fixed ring, a movable ring is fixedly installed at the bottom of the first spring, a gasket is arranged at the bottom of the movable ring, and both the movable ring and the gasket are located outside the lifting shaft, and a hexagonal rotating sleeve is connected to the external thread at the bottom of the lifting shaft.

[0012] Preferably, a retracted groove is provided at a position near the top of the outer wall of the lifting shaft, a movable insertion rod is fixedly installed in the retracted groove, a second spring is movably sleeved outside the movable insertion rod, an arc-shaped bottom plate and an arc-shaped protrusion are also movably sleeved outside the movable insertion rod, and a groove corresponding to the shape of the arc-shaped protrusion is provided on the inner wall of the inner rotating ring.

[0013] Preferably, the outer end of the movable insertion rod is located in the retracted groove.

[0014] Preferably, a movable leg is fixedly installed on the bottom of the rectangular base plate, a driving motor is fixedly installed on the rectangular mounting frame, a threaded rod is fixedly installed on the output shaft of the driving motor, and the threaded rod is rotatably connected to the rectangular mounting frame, and the threaded rod is threadedly connected to the movable leg.

[0015] A seamless welding process for a dishwasher inner tank comprises the following steps:

[0016] S1: By changing the position of the placement plate, it is convenient for the operator to place the dishwasher inner tank on the placement plate. After the placement is completed, the rectangular bottom plate and the placement plate are controlled to move again into the rectangular mounting frame, and the dishwasher inner tank is welded by the welding head;

[0017] S2: According to the weight of the inner tank of the dishwasher, the supporting effect of the placement plate on the inner tank of the dishwasher is adjusted;

[0018] S3: According to the size of the dishwasher inner tank, change the distance between the assembly plate and the rectangular bottom plate to ensure that the assembly plate is in contact with the dishwasher inner tank, and the support plate on the assembly plate is in contact with the dishwasher inner tank to prevent the dishwasher inner tank from tipping over due to inertia after stopping.

[0019] S4: After the dishwasher inner tank is welded, the rectangular bottom plate moves on the slide rail. After the rectangular bottom plate stops moving, the assembly plate supports the dishwasher inner tank. The telescopic rod is started, and the distance between the assembly plate and the rectangular bottom plate increases. When the stepper motor output shaft belt drive gear rotates, the assembly plate is driven to rotate, and the assembly plate will not contact the dishwasher inner tank. The assembly plate moves to the loading side, and the dishwasher inner tank can be removed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The inner rotating ring and the notched tooth ring are driven to rotate by a stepper motor. After the inner rotating ring and the notched teeth rotate ninety degrees around the lifting shaft, the arc bottom plate and the arc protrusion pop out again, thereby realizing the stop and limit of the inner rotating ring and the notched tooth ring after rotating ninety degrees. The assembly plate is located on the opposite side of the loading position. After the rectangular bottom plate stops moving, the assembly plate supports the inner tank of the dishwasher to prevent the inner tank of the dishwasher from shifting due to inertia. The output shaft of the telescopic rod with the connecting plate and the pulling rod moves in the movable sleeve, and the distance between the assembly plate and the rectangular bottom plate becomes larger to prevent the assembly plate from contacting the inner tank of the dishwasher. When the inner tank of the dishwasher is removed, the assembly plate can support the inner tank of the dishwasher from the other side to prevent the inner tank of the dishwasher from shifting and falling, effectively preventing the welding from being affected by the shift of the inner tank, and greatly improving the welding product effect.

[0022] 2. According to the size of the dishwasher inner tank, turn the hand wheel to drive the adjusting screw to rotate. When the adjusting screw rotates, it drives the telescopic bar and the movable frame to move. The movement of the telescopic bar and the movable frame drives the assembly plate to move, thereby changing the distance between the assembly plate and the rectangular bottom plate. The change in the distance between the assembly plate and the rectangular bottom plate can ensure the contact between the assembly plate and the dishwasher inner tank. The support plate on the assembly plate is in contact with the dishwasher inner tank, which can adapt to the production of dishwasher inner tanks of various specifications. There is no need to configure specific support equipment for each size separately, thereby reducing costs.

[0023] 3. By rotating the hexagonal rotating sleeve, the hexagonal rotating sleeve applies pressure to the gasket, and the gasket transmits the pressure to the movable ring, driving the first spring to deform and change the elastic coefficient of the first spring. When the dishwasher inner tank is placed on the placement plate, when pressure is applied to the placement plate and the lifting shaft, the elastic force generated by the first spring can better support the placement plate to prevent the placement plate from being overly pressurized. At the same time, the first spring can buffer the impact force of lowering the dishwasher inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the right side structure of the present invention.

[0025] Figure 2 It is a front view structural schematic diagram of the present invention.

[0026] Figure 3 It is a left side structural schematic diagram of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the corresponding position of the mounting frame of the present invention.

[0028] Figure 5 It is a structural schematic diagram of the corresponding position of the lifting shaft of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the corresponding position of the fixed shaft seat of the present invention.

[0030] Figure 7 It is a schematic diagram of the structure at the corresponding position of the support plate of the present invention.

[0031] Figure 8 It is a schematic diagram of the structure at the corresponding position of the stepping motor of the present invention.

[0032] Fig. 9 It is a structural schematic diagram of the corresponding position of the telescopic rod of the present invention.

[0033] Fig.10 It is a schematic diagram of the structure at the corresponding position of the limit strip of the present invention.

[0034] Fig.11 It is a structural schematic diagram of the corresponding position of the hexagonal rotating sleeve of the present invention.

[0035] Fig.12 It is a schematic diagram of the structure at the corresponding position of the notched tooth ring of the present invention.

[0036] Fig.13 It is a schematic diagram of the structure at the corresponding position of the inner rotating ring of the present invention.

[0037] Fig.14 It is a schematic diagram of the structure at the corresponding position of the fixing ring of the present invention.

[0038] In the figure: 1, rectangular mounting frame; 2, welding head; 3, slide rail; 301, end cover; 4, rectangular bottom plate; 5, lifting shaft; 501, limit strip; 502, retracted groove; 6, inner rotating ring; 7, notched tooth ring; 8, movable sleeve; 9, pull rod; 10, placement plate; 11, assembly frame; 12, assembly plate; 13, stepping motor; 14, driving gear; 15, telescopic rod; 16, connecting plate; 17, telescopic strip; 18. Moving frame; 19. Fixed shaft seat; 20. Adjusting screw; 21. Hand wheel; 22. Mounting base plate; 23. Support plate; 24. Locking bolt; 25. Fixed ring; 26. First spring; 27. Movable ring; 28. Gasket; 29. ​​Hexagonal rotating sleeve; 31. Movable plug rod; 32. Second spring; 33. Arc base plate; 34. Arc protrusion; 35. Moving leg; 36. Driving motor; 37. Threaded rod. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 14The present invention provides a technical solution: a seamless welding device for a dishwasher inner tank and a processing technology thereof, comprising a rectangular mounting frame 1 and a welding head 2 movably mounted on the rectangular mounting frame 1, a slide rail 3 fixedly mounted on the rectangular mounting frame 1, the welding head 2 is used for welding the dishwasher inner tank on the rectangular mounting frame 1, end covers 301 are arranged at both ends of the slide rail 3, the slide rail 3 cooperates with the slide seat at the bottom of the rectangular bottom plate 4 to realize the sliding of the rectangular bottom plate 4 on the slide rail 3, and at the same time, the end cover 301 limits the sliding of the rectangular bottom plate 4 to prevent the rectangular bottom plate 4 from falling off the slide rail 3, the slide rail 3 is slidably connected with the rectangular bottom plate 4, the rectangular bottom plate 4 is vertically slidably connected with a lifting shaft 5, the outer wall of the lifting shaft 5 is fixedly installed with a limit strip 501, and the limit strip 501 and the rectangular bottom plate 4 is also a sliding connection. The existence of the upper limit strip 501 on the lifting shaft 5 limits the installation of the lifting shaft 5 on the rectangular bottom plate 4 to ensure the vertical sliding of the lifting shaft 5 on the rectangular bottom plate 4 and prevent the lifting shaft 5 from rotating. The lifting shaft 5 is rotatably connected with the inner rotating ring 6 outside. There is no limit strip 501 at the position of the outer wall of the lifting shaft 5 near the top to ensure the rotation of the inner rotating ring 6 outside the lifting shaft 5. At the same time, the limit strip 501 supports the bottom of the inner rotating ring 6, and the rectangular bottom plate 4 supports the top of the inner rotating ring 6 to limit the inner rotating ring 6. Moreover, a plurality of balls are rotatably connected to the top of the inner rotating ring 6 to ensure the smoothness of the inner rotating ring 6 during the rotation process, reduce the friction between the inner rotating ring 6 and the rectangular bottom plate 4, and improve the convenience of the inner rotating ring 6 to rotate. The outer wall of the inner rotating ring 6 is fixedly installed with a notched toothed ring 7, and the notched toothed ring 7 is used to assist in driving the rotation of the inner rotating ring 6. A movable sleeve 8 is fixedly installed outside the inner rotating ring 6, and the movable sleeve 8 is located at the notch position opened on the notched toothed ring 7. When the inner rotating ring 6 and the notched toothed ring 7 rotate, the movable sleeve 8 also rotates with the inner rotating ring 6 and the notched toothed ring 7. A pull-out rod 9 is movably inserted in the movable sleeve 8. The length of the structure composed of the movable sleeve 8 and the pull-out rod 9 can be changed to assist in changing the position of the assembly plate 12, thereby realizing the contact or non-contact control of the assembly plate 12 and the inner tank of the dishwasher. A placement plate 10 is fixedly installed on the top of the lifting shaft 5, and the inner tank of the dishwasher is placed on the top of the placement plate 10 to assist in the welding of the inner tank of the dishwasher. Next, an assembly frame 11 is fixedly installed at one end of the pulling rod 9 away from the movable sleeve 8. The assembly frame 11 is a partially hollow structure to reduce the weight of the assembly frame 11 and reduce the inertia generated by the movement of the assembly frame 11. An assembly plate 12 is arranged on one side of the assembly frame 11. A stepper motor 13 is arranged on the top of the rectangular bottom plate 4. A driving gear 14 is fixedly installed on the output shaft of the stepper motor 13, and the driving gear 14 is meshed with the notched toothed ring 7. The driving gear 14 is driven to rotate by the output shaft of the stepper motor 13, thereby driving the notched toothed ring 7 and the inner rotating ring 6 to rotate on the lifting shaft 5. At the same time, the rotation angle of the stepper motor 13 is controllable to ensure that the rotation angle of the structure composed of the inner rotating ring 6 and the notched toothed ring 7 is 180 degrees. The assembly plate 12 can block three sides.A telescopic rod 15 is fixedly installed horizontally in the movable sleeve 8, and a connecting plate 16 is fixedly installed at one end of the piston rod of the telescopic rod 15 located outside. The connecting plate 16 is fixedly installed on the upper surface of the pull rod 9. The output shaft of the telescopic rod 15 applies pressure to the connecting plate 16, and the connecting plate 16 is pulled to move by the piston rod of the connecting plate 16, thereby driving the pull rod 9 to move in the movable sleeve 8, thereby realizing the change of the distance between the assembly frame 11 and the rectangular bottom plate 4.

[0041] The thickness of the driving gear 14 is greater than the thickness of the notched toothed ring 7 , ensuring that the driving gear 14 can always mesh with the notched toothed ring 7 when the lifting shaft 5 is lifted or lowered.

[0042] A plurality of telescopic strips 17 are movably inserted on the assembly frame 11, and one end of the telescopic strip 17 is fixedly mounted on the assembly plate 12, and a movable frame 18 is arranged between the plurality of telescopic strips 17 for connection, and the movable frame 18 is a cross bracket, and a fixed shaft seat 19 is fixedly mounted on the side of the assembly frame 11 away from the assembly plate 12, and an adjusting screw rod 20 is rotatably connected in the fixed shaft seat 19, and the adjusting screw rod 20 is rotatably connected to the movable frame 18, and a hand wheel 21 is fixedly mounted on the end of the adjusting screw rod 20 away from the fixed shaft seat 19, and one end of the adjusting screw rod 20 is driven to rotate in the fixed shaft seat 19 by the rotation of the hand wheel 21, and the hand wheel 21 is threadedly connected to the movable frame 18 when the hand wheel 21 rotates, and the hand wheel 21 drives the adjusting screw rod 20 to move on the movable frame 18, so that the telescopic strip 17 moves on the assembly frame 11, and the telescopic strip 17 applies pressure to the assembly plate 12 to change the horizontal distance between the assembly plate 12 and the rectangular bottom plate 4.

[0043] A mounting base plate 22 is movably installed in the assembly plate 12, and a support plate 23 is arranged on the side of the mounting base plate 22 away from the assembly plate 12. The mounting base plate 22 and the support plate 23 are an integrally formed structure, and the mounting base plate 22 and the support plate 23 are a T-shaped structure, which assists the installation of the mounting base plate 22 and the support plate 23 in the assembly plate 12. A locking bolt 24 is threadedly connected on the assembly plate 12, and the locking bolt 24 is threadedly installed on the mounting base plate 22. The installation of the mounting base plate 22 and the support plate 23 on the assembly plate 12 is realized by threading the locking bolt 24 on the assembly plate 12, which facilitates the disassembly and assembly of the mounting base plate 22 and the support plate 23.

[0044] A fixing ring 25 is fixedly installed at the bottom of the rectangular bottom plate 4, and the fixing ring 25 is movably sleeved outside the lifting shaft 5. The fixing ring 25 is an annular structure and is installed at the bottom of the rectangular bottom plate 4. A first spring 26 is fixedly installed at the bottom of the fixing ring 25. The deformation of the first spring 26 generates elastic force to support the lifting shaft 5 and the placement plate 10 on the lifting shaft 5. A movable ring 27 is fixedly installed at the bottom of the first spring 26. A gasket 28 is arranged at the bottom of the movable ring 27, and both the movable ring 27 and the gasket 28 are located outside the lifting shaft 5. The bottom of the lifting shaft 5 is externally threaded with a hexagonal rotating sleeve 29.

[0045] A retracted groove 502 is provided at a position near the top of the outer wall of the lifting shaft 5, and a movable plug rod 31 is fixedly installed in the retracted groove 502. A second spring 32 is movably sleeved on the outside of the movable plug rod 31. An arc-shaped bottom plate 33 and an arc-shaped protrusion 34 are also movably sleeved on the outside of the movable plug rod 31, and a groove corresponding to the shape of the arc-shaped protrusion 34 is provided on the inner wall of the inner rotating ring 6. A groove corresponding to the shape of the movable plug rod 31 is opened on the arc-shaped bottom plate 33 and the arc-shaped protrusion 34. The movable plug rod 31, the arc-shaped bottom plate 33 and the arc-shaped protrusion 34 form a movable plug-in structure.

[0046] The outer end of the movable rod 31 is located in the retracted groove 502 to ensure that the movable rod 31 does not affect the relative rotation between the inner rotating ring 6 and the lifting shaft 5 .

[0047] A movable leg 35 is fixedly installed at the bottom of the rectangular base plate 4, a driving motor 36 is fixedly installed on the rectangular mounting frame 1, a threaded rod 37 is fixedly installed on the output shaft of the driving motor 36, and the threaded rod 37 is rotatably connected to the rectangular mounting frame 1, and the threaded rod 37 is threadedly connected to the movable leg 35. The output shaft of the driving motor 36 drives the threaded rod 37 to rotate, thereby driving the movable leg 35 to move on the threaded rod 37, thereby realizing the movement of the rectangular base plate 4.

[0048] Working principle:

[0049] The first step: the output shaft of the driving motor 36 drives the threaded rod 37 to rotate, thereby driving the moving leg 35 threadedly connected to the threaded rod 37 to move on the threaded rod 37, and the moving leg 35 and the rectangular bottom plate 4 move on the rectangular mounting frame 1. The rectangular bottom plate 4 moves along the track of the slide rail 3. When the rectangular bottom plate 4 moves, the position of the placement plate 10 is changed, which is convenient for the operator to place the dishwasher inner tank on the placement plate 10. After the dishwasher inner tank is placed on the placement plate 10, the driving motor 36 is started again. The output shaft of the driving motor 36 drives the rectangular bottom plate 4 and the placement plate 10 to move again to the rectangular mounting frame 1, and the dishwasher inner tank is welded through the welding head 2.

[0050] Step 2: According to the weight of the dishwasher liner, adjust the supporting effect of the placement plate 10 on the dishwasher liner, rotate the hexagonal rotating sleeve 29, and let the hexagonal rotating sleeve 29 move on the lower end thread of the lifting shaft 5. When the hexagonal rotating sleeve 29 rotates and moves, the hexagonal rotating sleeve 29 applies pressure to the gasket 28, and the gasket 28 transmits the pressure to the movable ring 27. The movable ring 27 applies pressure to the first spring 26, drives the first spring 26 to deform, and changes the elastic coefficient of the first spring 26. When the dishwasher liner is placed on the placement plate 10, when pressure is applied to the placement plate 10 and the lifting shaft 5, the elastic force generated by the first spring 26 can better support the placement plate 10 to prevent the placement plate 10 from being overly pressurized. At the same time, the first spring 26 can buffer the impact force of the dishwasher liner being put down.

[0051] Step 3: According to the size of the inner tank of the dishwasher, turn the hand wheel 21 to let the hand wheel 21 drive the adjusting screw rod 20 to rotate. When the adjusting screw rod 20 rotates, it drives the telescopic bar 17 and the movable frame 18 to move. The movement of the telescopic bar 17 and the movable frame 18 drives the assembly plate 12 to move, thereby changing the distance between the assembly plate 12 and the rectangular bottom plate 4. The change in the distance between the assembly plate 12 and the rectangular bottom plate 4 can ensure the contact between the assembly plate 12 and the inner tank of the dishwasher. The support plate 23 on the assembly plate 12 contacts the inner tank of the dishwasher to prevent the inner tank of the dishwasher from tipping over due to inertia after the movement stops. At the same time, the structure composed of the support plate 23 and the mounting bottom plate 22 can be removed from the assembly plate 12, which is convenient for replacing the mounting bottom plate 22 and the support plate 23.

[0052] Step 4: During the placement of the inner tank of the dishwasher, the output shaft of the stepper motor 13 drives the gear 14 to rotate, thereby driving the inner rotating ring 6 and the notched toothed ring 7 to rotate outside the lifting shaft 5. When the inner rotating ring 6 and the notched toothed ring 7 rotate, the inner wall of the inner rotating ring 6 applies pressure to the arcuate protrusion 34, and the arcuate protrusion 34 and the arcuate bottom plate 33 are compressed and retracted into the retracted groove 502. At the same time, the second spring 32 supporting the arcuate bottom plate 33 is deformed. The elastic force generated by the deformation of the second spring 32 is used to reset the arcuate bottom plate 33 and the arcuate protrusion 34. At the same time, after the inner rotating ring 6 and the notched toothed ring 7 rotate ninety degrees around the lifting shaft 5, the arcuate bottom plate 33 and the arcuate protrusion 34 pop out again, thereby realizing the stop and limit of the inner rotating ring 6 and the notched toothed ring 7 after rotating ninety degrees, so that The assembly plate 12 is located on the opposite side of the loading position. After the dishwasher inner tank is placed, the rectangular bottom plate 4 moves on the slide rail 3. After the rectangular bottom plate 4 stops moving, the assembly plate 12 supports the dishwasher inner tank to prevent the dishwasher inner tank from shifting due to inertia. The telescopic rod 15 is started, and the output shaft of the telescopic rod 15 with the connecting plate 16 and the pulling rod 9 moves in the movable sleeve 8 to increase the distance between the assembly plate 12 and the rectangular bottom plate 4. When the output shaft of the stepping motor 13 with the driving gear 14 rotates, the assembly plate 12 is driven to rotate, and the assembly plate 12 will not contact the dishwasher inner tank. The assembly plate 12 moves to the loading side. When the dishwasher inner tank is removed, the assembly plate 12 can support the dishwasher inner tank from the other side to prevent the dishwasher inner tank from shifting and falling.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seamless welding device for a dishwasher inner tank, comprising a rectangular mounting frame (1) and a welding head (2) movably mounted on the rectangular mounting frame (1), characterized in that: The rectangular mounting frame (1) is fixedly mounted with a slide rail (3), and end covers (301) are provided at both ends of the slide rail (3). The slide rail (3) is slidably connected with a rectangular bottom plate (4), and a lifting shaft (5) is vertically slidably connected with the rectangular bottom plate (4). A limit strip (501) is fixedly mounted on the outer wall of the lifting shaft (5), and the limit strip (501) is also slidably connected with the rectangular bottom plate (4). The lifting shaft (5) is externally rotatably connected with an inner rotating ring (6), and a notched toothed ring (7) is fixedly mounted on the outer wall of the inner rotating ring (6). A movable sleeve (8) is fixedly mounted on the outer side of the inner rotating ring (6), and the movable sleeve (8) is located at a notch position provided on the notched toothed ring (7). A movable insert (8) is provided in the movable sleeve (8). A draw rod (9) is connected, a placement plate (10) is fixedly installed on the top of the lifting shaft (5), an assembly frame (11) is fixedly installed on the end of the draw rod (9) away from the movable sleeve (8), and an assembly plate (12) is arranged on one side of the assembly frame (11), a stepping motor (13) is arranged on the top of the rectangular bottom plate (4), a driving gear (14) is fixedly installed on the output shaft of the stepping motor (13), and the driving gear (14) is meshed with the notched gear ring (7), a telescopic rod (15) is fixedly installed horizontally in the movable sleeve (8), and a connecting plate (16) is fixedly installed on the end of the piston rod of the telescopic rod (15) located on the outside, and the connecting plate (16) is fixedly installed on the upper surface of the draw rod (9); A plurality of telescopic bars (17) are movably plugged onto the assembly frame (11), and one end of the telescopic bars (17) is fixedly mounted on the assembly plate (12). A movable frame (18) is arranged between the plurality of telescopic bars (17) for connection. A fixed shaft seat (19) is fixedly mounted on a side of the assembly frame (11) away from the assembly plate (12). A positioning screw rod (20) is rotatably connected inside the fixed shaft seat (19), and the positioning screw rod (20) is rotatably connected to the movable frame (18). A hand wheel (21) is fixedly mounted on one end of the positioning screw rod (20) away from the fixed shaft seat (19). A mounting base plate (22) is movably mounted in the mounting plate (12), a support plate (23) is provided on a side of the mounting base plate (22) away from the mounting plate (12), a locking bolt (24) is threadedly connected to the mounting plate (12), and the locking bolt (24) is threadedly mounted on the mounting base plate (22); A fixing ring (25) is fixedly mounted on the bottom of the rectangular bottom plate (4), and the fixing ring (25) is movably sleeved outside the lifting shaft (5); a first spring (26) is fixedly mounted on the bottom of the fixing ring (25), and a movable ring (27) is fixedly mounted on the bottom of the first spring (26); a gasket (28) is arranged on the bottom of the movable ring (27), and both the movable ring (27) and the gasket (28) are located outside the lifting shaft (5); and a hexagonal rotating sleeve (29) is externally threadedly connected to the bottom of the lifting shaft (5); A retracted groove (502) is provided at a position near the top of the outer wall of the lifting shaft (5), a movable plug rod (31) is fixedly installed in the retracted groove (502), a second spring (32) is movably sleeved on the outside of the movable plug rod (31), an arc-shaped bottom plate (33) and an arc-shaped protrusion (34) are also movably sleeved on the outside of the movable plug rod (31), and a groove corresponding to the shape of the arc-shaped protrusion (34) is provided on the inner wall of the inner rotating ring (6).

2. A seamless welding device for a dishwasher liner according to claim 1, characterized in that: The thickness of the driving gear (14) is greater than the thickness of the notched gear ring (7).

3. A seamless welding device for a dishwasher liner according to claim 2, characterized in that: The mounting base plate (22) and the support plate (23) are an integrally formed structure.

4. A seamless welding device for a dishwasher liner according to claim 3, characterized in that: The outer end of the movable insertion rod (31) is located in the retracted groove (502).

5. A seamless welding device for a dishwasher inner tank according to claim 4, characterized in that: A movable leg (35) is fixedly mounted on the bottom of the rectangular base plate (4), a driving motor (36) is fixedly mounted on the rectangular mounting frame (1), a threaded rod (37) is fixedly mounted on the output shaft of the driving motor (36), the threaded rod (37) is rotatably connected to the rectangular mounting frame (1), and the threaded rod (37) is threadedly connected to the movable leg (35).

6. A seamless welding process for a dishwasher inner tank, used for a seamless welding device for a dishwasher inner tank as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: By changing the position of the placement plate (10), it is convenient for the operator to place the inner container of the dishwasher on the placement plate (10); after the placement is completed, the rectangular bottom plate (4) and the placement plate (10) are controlled to move again into the rectangular mounting frame (1), and the inner container of the dishwasher is welded by the welding head (2); S2: adjusting the supporting effect of the placement plate (10) on the inner container of the dishwasher according to the weight of the inner container of the dishwasher; S3: according to the size of the inner tank of the dishwasher, the distance between the assembly plate (12) and the rectangular bottom plate (4) is changed to ensure that the assembly plate (12) is in contact with the inner tank of the dishwasher, and the support plate (23) on the assembly plate (12) is in contact with the inner tank of the dishwasher, so as to prevent the inner tank of the dishwasher from tipping over due to inertia after the movement stops; S4: After the dishwasher inner tank is welded, the rectangular bottom plate (4) moves on the slide rail (3). After the rectangular bottom plate (4) stops moving, the assembly plate (12) supports the dishwasher inner tank, and the telescopic rod (15) is started. The distance between the assembly plate (12) and the rectangular bottom plate (4) increases. When the output shaft of the stepper motor (13) with the driving gear (14) rotates, the assembly plate (12) is driven to rotate, and the assembly plate (12) does not contact the dishwasher inner tank. The assembly plate (12) moves to the loading side, and the dishwasher inner tank can be removed.

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