Automatic welding platform for freezer shell

Abstract

The invention provides an automatic welding platform for a freezer shell, and relates to the technical field of automatic welding platforms, the automatic welding platform comprises a conveying platform, and a first welding station, a second welding station and a filling station are sequentially arranged above the conveying platform in the conveying direction; a filling assembly is arranged on the filling station; the corner butt joint piece comprises a corner plate, a middle connecting block, an outer arc block and an outer baffle; the first double-seam welding assemblies are symmetrically arranged on the two sides of the first welding station, and each first double-seam welding assembly comprises a first position adjusting component, a first laser welding gun, a first grabbing component, a first storage component and a first welding gun cleaning component; a second double-seam welding assembly; the reinforcing cover and the corner butt joint pieces are reserved outside the freezer inner container, the butt joint efficiency and the butt joint strength of the outer decoration plate can be effectively improved, the whole welding process is automatically completed, the welding efficiency is high, and manual positioning is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of automatic welding platforms, and in particular to an automatic welding platform for a refrigerator shell. Background Art

[0002] The freezer shell is usually made of stainless steel. The freezer shell is placed outside the freezer liner to protect the freezer liner. The freezer shell has good corrosion resistance and can resist the erosion of moisture, food juice and other substances, which makes the freezer less likely to rust during long-term use. For example, in some commercial freezers, they are often exposed to various seafood, meat and other food materials with salt and corrosive ingredients. The stainless steel shell can effectively prevent the freezer from being corroded.

[0003] The freezer shell has the following shortcomings during welding:

[0004] 1. The outer shell of the freezer has four sides that need to be welded, and the positioning fixtures need to be repeatedly installed and disassembled to ensure that each exterior panel is outside the freezer, which makes the welding efficiency of the freezer outer shell low;

[0005] 2. There is a lack of connection buffer between the freezer shell and the freezer liner. This will result in insufficient connection strength between the shell and the liner. When the shell is impacted, the liner will be damaged as well. The protective ability of the freezer shell is limited. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an automatic welding platform for a refrigerator shell, which solves the problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An automatic welding platform for a refrigerator shell comprises a conveying platform, above which are arranged a first welding station, a second welding station and a filling station in sequence along the conveying direction, a plurality of groups of bearing components are installed on the top of the conveying platform, the bearing components comprise a base, the plurality of groups of bases are arranged on the conveying platform, a first motor is arranged in the middle of the surface of the base, the output end of the first motor is connected to a support plate, a plurality of groups of support rods are arranged at the edge of the support plate, a closing plate is arranged at the top end of the plurality of support rods, the support plate is used to support an insulation liner from the bottom, the closing plate is sleeved on the bottom of the outer wall of the insulation liner, and the closing plate is placed above the drainage hole on the side of the insulation liner; a filling assembly is arranged on the filling station;

[0009] The corner joint piece includes a corner plate, a middle joint block, an outer arc block and an outer baffle plate. The side section of the corner plate is a right angle. The corner plate is installed at the corner of the freezer liner by bolts. The length of the corner plate is the same as the height of the freezer liner. A middle joint block is provided at the corner of the side wall of the corner plate. The outer end of the middle joint block is provided with an outer arc block. The two sides of the outer arc block are first joint planes. The outer wall of the outer arc block is a chamfered angle surface. The middle part of the chamfered angle surface is a chamfered surface. The two sides of the chamfered angle surface are second joint planes. The second joint plane is vertically distributed with the first joint plane. Both the first joint plane and the second joint plane are welding surfaces. The end of the corner plate is vertically provided with an outer baffle plate. The outer side of the outer arc block is snap-fitted and connected to the chamfered guard plate. The chamfered guard plate is used to shield and protect the weld of the corner joint piece.

[0010] A first double-seam welding assembly is symmetrically arranged on both sides of the first welding station. The first double-seam welding assembly includes a first position adjustment component, a first laser welding gun, a first grabbing component, a first storage component and a first welding gun cleaning component. The first position adjustment component is slidably mounted on the conveying platform. The first position adjustment component is used to drive the first laser welding gun and the first grabbing component to move. The first position adjustment component is located above the first storage component and the first welding gun cleaning component. The first storage component is used to stack and store multiple groups of reinforcement covers.

[0011] A second double-seam welding assembly is symmetrically arranged on both sides of the second welding station. The second double-seam welding assembly includes a second position adjustment component, a second laser welding gun, a second grabbing component, a second storage component and a second welding gun cleaning component. The second position adjustment component is slidably mounted on the conveying platform. The second position adjustment component is used to drive the second laser welding gun and the second grabbing component to move. The second position adjustment component is located above the second storage component and the second welding gun cleaning component. The second storage component is used to stack and store multiple sets of exterior panels.

[0012] The welding platform includes the following states:

[0013] In the first state, the first grabbing component grabs the reinforcing cover and automatically fits it to the four sides of the outer wall of the thermal insulation inner tank, and the first laser welding gun welds the reinforcing cover to the outer wall of the thermal insulation inner tank, and the two sides of the reinforcing cover are thermal insulation cavities; after welding is completed, the first welding gun cleaning component cleans the impurities of the protective lens and the end of the barrel of the first laser welding gun;

[0014] In the second state, the second gripping component absorbs and grips the exterior panel and automatically fits it to the outer walls of the multiple sets of reinforcement covers. The exterior panel and the reinforcement cover are pre-positioned and clamped, and the exterior panel is placed between the first docking planes of the two sets of corner docking parts. The second laser welding gun welds the two ends of the exterior panel; after welding, the second welding gun cleaning component cleans the impurities on the protective lens and the end of the barrel of the second laser welding gun;

[0015] In the third state, the filling component fills the heat preservation chamber with the heat preservation agent.

[0016] Furthermore, the reinforced cover includes a U-shaped cover, connecting plates are symmetrically provided on both sides of the U-shaped cover, a partition is provided on the upper part of the interior of the U-shaped cover, and card holes are opened on the upper and lower parts of the outer wall of the U-shaped cover, and the two groups of card holes are respectively located at the upper and lower parts of the partition; in the first state, the top of the reinforced cover is flush with the top of the thermal insulation liner, and a flow gap is left between the bottom end of the reinforced cover and the closing plate; in the third state, the insulation agent is filled along the flow gap to the bottom of the partition of each reinforced cover.

[0017] Furthermore, the inner wall of the exterior panel is provided with multiple groups of clamping columns, which relatively penetrate the clamping holes, and the outer wall of the clamping column is symmetrically provided with spring plates, which cooperate to stop the inner side of the U-shaped cover; the top of the insulation liner and the insulation cavity is covered with a ring cover plate, and the bottom surface of the ring cover plate is vertically provided with multiple claws, which are engaged with the inner end of the clamping column.

[0018] Furthermore, the first position adjustment component includes a first support rod, a first longitudinal guide rail, a first vertical guide rail, and a first transverse guide rail; the first grabbing component includes a first driving rod, a back plate, and a clamping plate; the first support rod is symmetrically provided with two groups, the first support rod is vertically slidably installed on the conveying platform, the top of the first support rod is vertically provided with a first longitudinal guide rail, the inner wall of the first longitudinal guide rail is slidably installed with a first vertical guide rail, the inner wall of the first vertical guide rail is provided with a first vertical groove and a second vertical groove, the first moving block is vertically slidably installed inside the first vertical groove, the first transverse guide rail is rotatably installed between the two groups of first moving blocks, and a second motor is installed at the rotating connection, and the first transverse guide A first driving rod is installed on the bottom surface of the rail for horizontal sliding, and the output end of the first driving rod is rotatably connected to the back plate and a switching motor is installed at the rotating connection. A clamping plate is installed on the inner wall of the back plate for opening and closing sliding, and the clamping plate is used to clamp the middle part of the end of the reinforcement cover. The switching motor drives the back plate to rotate so that the opening of the reinforcement cover faces the thermal insulation liner; a second moving block is installed vertically for sliding inside each group of second vertical grooves, a second horizontal guide rail is rotatably installed inside the second moving block and a third motor is installed at the rotating connection, a third moving block is slidably installed on the side wall of the second horizontal guide rail, and the side wall of the third moving block is rotatably connected to the first laser welding gun and a fourth motor is installed at the rotating connection.

[0019] Furthermore, the first storage component includes a first storage box, which is installed between two groups of first support rods, and multiple groups of reinforcement covers with openings facing upward are stacked inside the first storage box, and a first push plate is vertically slidably installed on the bottom of the interior of the first storage box; first side box bodies are slidably installed on the top of both side surfaces of the first storage box, and flux is stored in the interior of the first side box body. The top of the first side box body is connected to a first export pipe, and the first export pipe is placed parallel to the top of the first storage box, and a discharge hole is opened on the bottom surface of the first export pipe.

[0020] Furthermore, the first welding gun cleaning component includes a recovery tube, an external grinding component and an internal cleaning component. A vertical guide plate is installed inside the recovery tube, one side of the vertical guide plate is a recovery chamber, and the recovery chamber is installed with an impurity extraction fan. The fifth motor is slidably installed on the other side of the vertical guide plate. The top output end of the fifth motor is connected to the main branch pipe, and the top of the main branch pipe is connected to the internal cleaning component. The internal cleaning component extends into the nozzle of the first laser welding gun. The internal cleaning component is used to clean the protective lens and the inner wall of the nozzle. An external grinding component is provided on the top of the recovery tube, and the external grinding component is mounted on the outer wall of the outlet end of the nozzle. The external grinding component is used to clean impurities on the outer wall of the nozzle, and the recovery chamber is used to recover impurities cleaned by the internal cleaning component and the external grinding component.

[0021] Furthermore, a constraint plate is provided at the top of the inner part of the main branch pipe, and an inner tube body is vertically slidably penetrated inside the constraint plate, an upper ring body is provided on the outer wall of the top end of the inner tube body, the top end of the inner tube body slides outwardly and extends the main branch pipe, and lifting drive wheels are installed on both sides of the inner tube body, the inner top of the inner tube body is an open structure, and a sealing plate is provided at the bottom of the inner tube body, and the upper part of the sealing plate is a accommodating chamber, and the lower part of the sealing plate is connected to the air pipe, the air pipe penetrates the main branch pipe and is connected to the air pump, and the air pump is arranged below the fifth motor; a barrier airbag is sealed and connected to the top end of the main branch pipe, and a winding wheel is installed inside the accommodating chamber, and a traction rope is wound around the outer wall of the winding wheel, and the traction end of the traction rope is connected to the barrier airbag; a scraper is symmetrically rotatably installed at the top end of the main branch pipe, and a cleaning cotton pad is provided on the upper surface of the scraper, and bristles are embedded in the outer end of the scraper; the internal cleaning component includes the following working steps:

[0022] S1, the scraper is rotated downward and folded, the inner tube body is retracted into the main branch pipe, the air blocking airbag is deflated and retracted into the accommodating chamber; the main branch pipe and the scraper are extended into the nozzle;

[0023] S2. The scraper rotates and unfolds to a horizontal position and fits the protective lens; the main branch pipe rotates and the cleaning cotton pad wipes and cleans the protective lens;

[0024] S3. The main branch pipe rotates and descends, and the bristles clean the inner wall of the nozzle. At the same time, the inner tube extends outward, and the barrier airbag expands into a round shape and forms a barrier above the scraper to prevent dust from floating upward to the protective lens.

[0025] Furthermore, the external grinding component includes a lower cover body, an upper tube body is rotatably provided on the top of the lower cover body, a sixth motor for driving the upper tube body to rotate is provided on the outer wall of the lower cover body, a plurality of groups of grinding strips are provided on the inner wall of the upper tube body, the shape of the grinding strips is adapted to the shape of the outer wall of the nozzle, an inner lead-out hole and an outer lead-out hole are provided on the bottom surface of the lower cover body, the inner lead-out hole is relatively connected with the nozzle, the outer lead-out hole is located on the outside of the grinding strip, and an annular cover is provided on the bottom surface of the lower cover body, which is connected with the recovery chamber.

[0026] Furthermore, the second storage component includes a second storage box, a plurality of groups of exterior panels are stacked inside the second storage box, and a second push plate is vertically slidably installed on the inner bottom of the second storage box; second side box bodies are slidably installed on the tops of both sides of the second storage box, and flux is stored inside the second side box bodies. The top of the second side box bodies is connected to a second export pipe, and the second export pipe is relatively arranged on the welding surfaces at both ends of the exterior panels.

[0027] Furthermore, the filling assembly includes a movable hanging plate, a waste box and a longitudinal guide rail. The longitudinal guide rail is symmetrically arranged above the filling station. A movable hanging plate is slidably installed between the two sets of longitudinal guide rails. A waste box is provided at one end of the filling station. A plurality of drainage heads are provided at the front end of the bottom of the movable hanging plate. The drainage heads are used to fill the insulation agent into the insulation cavity. A first suction hole and a second suction hole are provided at the rear end of the movable hanging plate. A material guide plate and a shovel plate are provided at the bottom of the first suction hole. A suction hood is provided at the bottom of the second suction hole. A first material guide pipe is provided above the first suction hole. A second material guide pipe is provided above the second suction hole. The outlet ends of the first and second material guide pipes are connected in parallel with the material suction pipes, and a cutting knife is installed inside the first material guide pipe.

[0028] The present invention provides an automatic welding platform for refrigerator shells. Compared with the prior art, it has the following beneficial effects:

[0029] 1. The setting of the bearing components can achieve the following effects: the operator can place the processed products on the pallet, and then the base can move along the conveying platform and drive the thermal insulation liner to move, so as to realize automatic transfer; the first motor can drive the thermal insulation liner to rotate and complete the processing of different sides; the design of the closing plate can constrain and position the thermal insulation liner from the bottom, so that the turnover of the thermal insulation liner is more stable and reliable, and the closing plate can also close the bottom of the reinforcing cover from the bottom, and the closing plate and the outer baffle plate cooperate to form a left and right closed structure, so as to facilitate the stable filling of the polyurethane foam thermal insulation agent; the closing plate can also prevent the thermal insulation agent from clogging the drainage hole, so that the thermal insulation agent foams above the drainage hole;

[0030] 2. The setting of the corner butt joints can achieve the following effects: the corner plates are pre-installed at the four corners of the thermal insulation liner, so that the first butt joint surface and the second butt joint surface of the outer arc block are convenient for the subsequent butt welding and positioning of the exterior panels; the outer arc block can be used as a connecting structure of adjacent exterior panels to form a complete external protection structure; the outer arc block can be used as a connection reserved structure for the chamfered guard plate, which is convenient for the clamping and positioning of the chamfered guard plate;

[0031] 3. The setting of the reinforcement cover can achieve the following effects: the reinforcement cover can support the exterior panel from the inside, making the exterior panel more impact-resistant; the reinforcement cover can be pre-positioned and connected with the exterior panel, which is convenient for the initial positioning of the exterior panel and improves the welding accuracy and efficiency of the exterior panel; the reinforcement cover can also serve as a reserved structure for the ring cover plate, which is convenient for the clamping of the ring cover plate, so that the ring cover plate can be quickly closed on the exterior panel and the thermal insulation liner;

[0032] 4. The setting of the first double-seam welding assembly can achieve the following effects: the reinforcement cover can be automatically grabbed so that the reinforcement cover fits the outer wall of the thermal insulation liner; the two sides of the reinforcement cover can be automatically welded so that the reinforcement cover is welded and fixed on the thermal insulation liner; after welding, the first welding gun cleaning component can clean the nozzle of the first laser welding gun, so that after welding, impurities on the protective lens can be removed to extend the service life of the protective lens, and the nozzle outlet can also be polished to reduce the accumulation of impurities at the nozzle outlet to avoid heat accumulation;

[0033] 5. The setting of the second double-seam welding assembly can achieve the following effects: the exterior trim panel can be automatically grabbed so that the exterior trim panel fits on the outer wall of the reinforcement cover; the two side edges of the exterior trim panel can be automatically welded so that the exterior trim panel is placed between the corner joint pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of an automatic welding platform for a refrigerator shell of the present invention is shown;

[0036] Figure 2 It shows a schematic structural diagram of a freezer housing after welding of the present invention;

[0037] Figure 3 A schematic structural diagram of a first double-seam welding assembly of the present invention is shown;

[0038] Figure 4 A schematic diagram of the structure of the clamping plate of the present invention is shown;

[0039] Figure 5 A schematic structural diagram of a first double-seam welding assembly in welding state of the present invention is shown;

[0040] Figure 6 A schematic diagram of the internal structure of a first storage box of the present invention is shown;

[0041] Figure 7 A schematic structural diagram of a first welding gun cleaning component of the present invention is shown;

[0042] Figure 8 Shows a schematic diagram of the structure of the internal cleaning component of the present invention;

[0043] Fig. 9 A schematic diagram of the structure of the external grinding component of the present invention is shown;

[0044] Fig.10 A schematic diagram of the structure of the corner butt joint of the present invention is shown;

[0045] Fig.11 A schematic diagram of the joint structure between the corner joint piece and the exterior panel of the present invention is shown;

[0046] Fig.12 A schematic diagram of the structure of the reinforcement cover of the present invention is shown;

[0047] Fig.13 A schematic diagram of the bearing structure of the bearing component of the present invention is shown;

[0048] Fig.14 Shows Fig.13 A schematic diagram of the enlarged structure at point A;

[0049] Fig.15 A schematic diagram of the ring cover plate clamping structure of the present invention is shown;

[0050] Fig.16 A schematic diagram of the structure of a second double-seam welding assembly of the present invention is shown;

[0051] Fig.17 A schematic structural diagram of a second double-seam welding assembly in welding state of the present invention is shown;

[0052] Fig.18 Shows Fig.16 A schematic diagram of the enlarged structure at B;

[0053] Fig.19 A schematic diagram of the filling assembly structure of the present invention is shown;

[0054] As shown in the figure: 1. conveying platform, 11. bearing component, 111. base, 112. first motor, 113. support plate, 114. support rod, 115. closing plate, 2. first double-seam welding assembly, 21. first support rod, 22. first longitudinal guide rail, 23. first vertical guide rail, 24. first transverse guide rail, 241. second motor, 25. first driving rod, 26. first storage component, 261. first storage box, 262. first push plate, 263. first side box body, 264. first outlet pipe, 27. second transverse guide rail, 271. third motor, 272. fourth motor, 28. first laser welding gun, 281. nozzle, 282. Protective lens, 29, back plate, 291, clamping plate, 292, switching motor, 3, first welding gun cleaning parts, 31, recovery tube, 311, vertical guide plate, 312, recovery chamber, 313, impurity extraction fan, 314, fifth motor, 315, air pump, 32, external grinding parts, 321, lower cover body, 3211, inner lead-out hole, 3212, outer lead-out hole, 322, upper tube body, 323, grinding strip, 324, sixth motor, 325, ring cover, 33, main branch pipe, 331, constraint plate, 34, inner tube body, 341, upper ring body, 342, sealing plate, 343, air pipe, 35, winding wheel, 351, traction rope, 36, Lifting drive wheel, 37, blocking airbag, 38, scraper, 381, cleaning cotton pad, 382, ​​bristles, 4, second double-seam welding assembly, 41, second support rod, 42, second longitudinal guide rail, 43, second vertical guide rail, 44, third transverse guide rail, 441, sixth motor, 45, second drive rod, 451, adsorption plate, 46, second laser welding gun, 47, second welding gun cleaning component, 48, second storage component, 481, second storage box, 482, second push plate, 483, second side box body, 484, second export pipe, 49, fourth transverse guide rail, 491, seventh motor, 492, eighth motor, 5, corner docking piece, 51, angle plate , 52, outer baffle, 53, middle block, 54, outer arc block, 6, reinforcement cover, 61, U-shaped cover, 62, connecting plate, 63, partition, 64, clamping hole, 7, exterior panel, 71, clamping column, 711, spring piece, 8, filling assembly, 81, movable hanging plate, 811, first suction hole, 812, second suction hole, 82, drainage head, 83, guide plate, 84, shovel plate, 85, suction cover, 86, cutting knife, 87, suction pipe, 871, first guide pipe, 872, second guide pipe, 88, longitudinal guide rail, 89, waste box, 9, insulation liner, 91, drainage hole, 9a, corner guard plate, 9b, ring cover plate, 91b, claw. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of 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.

[0056] In order to solve the technical problems in the background technology, the following automatic welding platform for the shell of a freezer is provided:

[0057] Combination Figure 1-Figure 19 As shown, an automatic welding platform for a refrigerator shell provided by the present invention comprises a conveying platform 1, above which are arranged a first welding station, a second welding station and a filling station in sequence along the conveying direction, a plurality of groups of bearing components 11 are installed on the top of the conveying platform 1, the bearing components 11 comprise a base 111, the plurality of groups of bases 111 are arranged on the conveying platform 1, a first motor 112 is arranged in the middle of the surface of the base 111, the output end of the first motor 112 is connected to a support plate 113, a plurality of groups of supporting rods 114 are arranged at the edge of the support plate 113, a closing plate 115 is arranged at the top of the plurality of groups of supporting rods 114, the support plate 113 is used to support the thermal insulation liner 9 from the bottom, the closing plate 115 is sleeved on the bottom of the outer wall of the thermal insulation liner, and the closing plate 115 is placed above the drainage hole 91 on the side of the thermal insulation liner 9; a filling assembly 8 is arranged on the filling station;

[0058] The corner joint piece 5 comprises a corner plate 51, a middle joint block 53, an outer arc block 54 and an outer baffle plate 52. The side section of the corner plate 51 is a right angle. The corner plate 51 is installed at the corner of the freezer inner tank 9 by bolts. The length of the corner plate 51 is the same as the height of the freezer inner tank 9. A middle joint block 53 is provided at the corner of the side wall of the corner plate 51. An outer arc block 54 is provided at the outer end of the middle joint block 53. Both sides of the outer arc block 54 are first joint planes. The outer wall of the outer arc block 54 is a chamfered angle surface. The middle part of the chamfered angle surface is a chamfered surface. Both sides of the chamfered angle surface are second joint planes. The second joint plane is perpendicular to the first joint plane. Both the first joint plane and the second joint plane are welding surfaces. The outer baffle plate 52 is vertically provided at the end of the corner plate 51. The outer side of the outer arc block 54 is snap-fitted and connected to the chamfered guard plate 9a. The chamfered guard plate 9a is used to shield and protect the weld of the corner joint piece.

[0059] The first double-seam welding assembly 2 is symmetrically arranged on both sides of the first welding station. The first double-seam welding assembly 2 includes a first position adjustment component, a first laser welding gun 28, a first grabbing component, a first storage component 26 and a first welding gun cleaning component 3. The first position adjustment component is slidably installed on the conveying platform 1. The first position adjustment component is used to drive the first laser welding gun 28 and the first grabbing component to move. The first position adjustment component is located above the first storage component 26 and the first welding gun cleaning component; the first storage component 26 is used to stack and store multiple groups of reinforcement covers 6;

[0060] The second double-seam welding assembly 4 is symmetrically arranged on both sides of the second welding station. The second double-seam welding assembly 4 includes a second position adjustment component, a second laser welding gun 46, a second grabbing component, a second storage component 48 and a second welding gun cleaning component 47. The second position adjustment component is slidably installed on the conveying platform 1. The second position adjustment component is used to drive the second laser welding gun 46 and the second grabbing component to move. The second position adjustment component is located above the second storage component 48 and the second welding gun cleaning component 47; the second storage component 48 is used to stack and store multiple groups of exterior panels 7;

[0061] The welding platform includes the following states:

[0062] In the first state, the first grabbing component grabs the reinforcing cover 6 and automatically fits it to the four sides of the outer wall of the heat-insulating inner tank, and the first laser welding gun 28 welds the reinforcing cover 6 to the outer wall of the heat-insulating inner tank, and the two sides of the reinforcing cover 6 are heat-insulating cavities; after welding, the first welding gun cleaning component 3 cleans the protective lens 282 of the first laser welding gun 28 and impurities at the end of the barrel;

[0063] In the second state, the second gripping component absorbs and grips the exterior panel 7 and automatically fits it to the outer wall of the multiple groups of reinforcement covers 6, the exterior panel 7 and the reinforcement covers 6 are pre-positioned and clamped, the exterior panel 7 is placed between the first docking planes of the two groups of corner docking parts 5, and the second laser welding gun welds the two ends of the exterior panel 7; after welding is completed, the second welding gun cleaning component cleans the protective lens 282 of the second laser welding gun and impurities at the end of the gun barrel;

[0064] In the third state, the filling assembly 8 fills the heat preservation chamber with the heat preservation agent.

[0065] In the above scheme:

[0066] 1. The setting of the bearing components can achieve the following effects: the operator can place the processed products on the pallet, and then the base can move along the conveying platform and drive the thermal insulation liner to move, so as to realize automatic transfer; the first motor can drive the thermal insulation liner to rotate and complete the processing of different sides; the design of the closing plate can constrain and position the thermal insulation liner from the bottom, so that the turnover of the thermal insulation liner is more stable and reliable, and the closing plate can also close the bottom of the reinforcing cover from the bottom, and the closing plate and the outer baffle plate cooperate to form a left and right closed structure, so as to facilitate the stable filling of the polyurethane foam thermal insulation agent; the closing plate can also prevent the thermal insulation agent from clogging the drainage hole, so that the thermal insulation agent foams above the drainage hole;

[0067] 2. The setting of the corner butt joints can achieve the following effects: the corner plates are pre-installed at the four corners of the thermal insulation liner, so that the first butt joint surface and the second butt joint surface of the outer arc block are convenient for the subsequent butt welding and positioning of the exterior panels; the outer arc block can be used as a connecting structure of adjacent exterior panels to form a complete external protection structure; the outer arc block can be used as a connection reserved structure for the chamfered guard plate, which is convenient for the clamping and positioning of the chamfered guard plate;

[0068] 3. The setting of the reinforcement cover can achieve the following effects: the reinforcement cover can support the exterior panel from the inside, making the exterior panel more impact-resistant; the reinforcement cover can be pre-positioned and connected with the exterior panel, which is convenient for the initial positioning of the exterior panel and improves the welding accuracy and efficiency of the exterior panel; the reinforcement cover can also serve as a reserved structure for the ring cover plate, which is convenient for the clamping of the ring cover plate, so that the ring cover plate can be quickly closed on the exterior panel and the thermal insulation liner;

[0069] 4. The setting of the first double-seam welding assembly can achieve the following effects: the reinforcement cover can be automatically grabbed so that the reinforcement cover fits the outer wall of the thermal insulation liner; the two sides of the reinforcement cover can be automatically welded so that the reinforcement cover is welded and fixed on the thermal insulation liner; after welding, the first welding gun cleaning component can clean the nozzle of the first laser welding gun, so that after welding, impurities on the protective lens can be removed to extend the service life of the protective lens, and the nozzle outlet can also be polished to reduce the accumulation of impurities at the nozzle outlet to avoid heat accumulation;

[0070] 5. The setting of the second double-seam welding assembly can achieve the following effects: the exterior trim panel can be automatically grabbed so that the exterior trim panel fits on the outer wall of the reinforcement cover; the two side edges of the exterior trim panel can be automatically welded so that the exterior trim panel is placed between the corner joint pieces.

[0071] In this embodiment, the reinforced cover 6 includes a U-shaped cover 61, connecting plates 62 are symmetrically provided on both sides of the U-shaped cover 61, a partition 63 is provided on the upper part of the interior of the U-shaped cover 61, and clamping holes 64 are opened on the upper and lower parts of the outer wall of the U-shaped cover 61, and two groups of clamping holes 64 are respectively located at the upper and lower parts of the partition 63; in the first state, the top of the reinforced cover 6 is flush with the top of the thermal insulation liner, and a flow gap is left between the bottom end of the reinforced cover 6 and the closing plate 115; in the third state, the thermal insulation agent is filled along the flow gap to the bottom of the partition 63 of each reinforced cover 6.

[0072] In the above scheme: the structure of the U-shaped cover can stably support the exterior panel, and the design of the partition can separate the interior of the U-shaped cover, so that when the insulation is filled subsequently, the insulation can only be filled to the bottom and not to the top. In this way, there is a cavity above the partition, which is convenient for the ring cover to be clamped.

[0073] In this embodiment, the inner wall of the exterior panel 7 is provided with a plurality of groups of clamping columns 71, and the clamping columns 71 relatively penetrate the clamping holes 64. The outer wall of the clamping columns 71 is symmetrically provided with spring plates 711, and the spring plates 711 cooperate to stop the inner side of the U-shaped cover 61; the top of the thermal insulation liner and the thermal insulation cavity is covered with a ring cover plate 9b, and the bottom surface of the ring cover plate 9b is vertically provided with a plurality of claws 91b, and the claws 91b are engaged with the inner ends of the clamping columns 71.

[0074] In the above scheme: when the exterior panel is docked with the reinforcement cover, the clamping column is inserted into the clamping hole, the spring sheet can stop the clamping column from the inside to achieve the clamping positioning of the exterior panel, and the inner end of the clamping column can be clamped with the clamping claw of the ring cover plate to achieve stable positioning of the clamping column.

[0075] In order to realize the automatic material taking and transfer of the reinforced cover, the following implementation scheme is given:

[0076] In this embodiment, the first position adjustment component includes a first support rod 21, a first longitudinal guide rail 22, a first vertical guide rail 23, and a first transverse guide rail 24; the first grabbing component includes a first driving rod 25, a back plate 29 and a clamping plate 291; the first support rod 21 is symmetrically provided with two groups, the first support rod 21 is vertically slidably installed on the conveying platform 1, the top of the first support rod 21 is vertically provided with a first longitudinal guide rail 22, the inner wall of the first longitudinal guide rail 22 is slidably installed with a first vertical guide rail 23, the inner wall of the first vertical guide rail 23 is provided with a first vertical groove and a second vertical groove, the interior of the first vertical groove is vertically slidably installed with a first moving block, the first transverse guide rail 24 is rotatably installed between the two groups of first moving blocks, and a second motor 241 is installed at the rotating connection, the first transverse guide rail A first driving rod 25 is installed on the bottom surface of 24 for horizontal sliding, and the output end of the first driving rod 25 is rotatably connected to the back plate 29 and a switching motor 292 is installed at the rotating connection. A clamping plate 291 is installed on the inner wall of the back plate 29 for opening and closing sliding. The clamping plate 291 is used to clamp the middle part of the end of the reinforcement cover 6. The switching motor 292 drives the back plate 29 to rotate so that the opening of the reinforcement cover 6 faces the thermal insulation liner; a second moving block is installed vertically for sliding inside each group of second vertical grooves, a second horizontal guide rail 27 is rotatably installed inside the second moving block, and a third motor 271 is installed at the rotating connection, a third moving block is slidably installed on the side wall of the second horizontal guide rail 27, and the side wall of the third moving block is rotatably connected to the first laser welding gun 28 and a fourth motor 272 is installed at the rotating connection.

[0077] In the above scheme: when grabbing the reinforcement cover, the first driving rod is adjusted to extend vertically downward, the first vertical guide rail moves along the first longitudinal guide rail, the clamping plate clamps the reinforcement cover at the top, and then the first driving rod is retracted, thereby driving the reinforcement cover to move upward and disengage from the first storage component, the first vertical guide rail moves longitudinally along the first longitudinal guide rail, the second motor drives the first transverse guide rail to rotate, so that the first driving rod and the reinforcement cover rotate to a vertical state, and then the motor is switched to drive the back plate to rotate, so that the opening of the reinforcement cover faces the thermal insulation liner, and then the first driving rod is extended outward, so that the reinforcement cover is attached to the outer wall of the thermal insulation liner, and during the welding process, the clamping plate always clamps and positions the reinforcement cover at the top, and the design of the U-shaped cover can be used as an embedding area for the clamping plate, so that the clamping plate will not conflict with the thermal insulation liner.

[0078] In this embodiment, the first storage component 26 includes a first storage box 261, which is installed between two groups of first support rods 21, and multiple groups of reinforcement covers 6 with openings facing upward are stacked inside the first storage box 261, and a first push plate 262 is vertically slidably installed on the bottom of the interior of the first storage box 261; first side box bodies 263 are slidably installed on the tops of both sides of the first storage box 261, and flux is stored in the first side box body 263. The top of the first side box body 263 is connected to a first outlet pipe 264, and the first outlet pipe 264 is placed parallel to the top of the first storage box 261, and a discharge hole is opened on the bottom of the first outlet pipe 264.

[0079] In the above scheme: when replenishing materials, the first push plate moves upward, thereby pushing the reinforcement cover to move upward, so that the reinforcement covers are replenished one by one upward; both ends of the first storage box are open structures, and the open structure is convenient for the insertion of the clamping plate; before taking materials, the first side box body moves along the first storage box, and the flux in the first storage box is discharged downward through the first outlet pipe, and then discharged downward through the discharge hole, so that the flux is evenly applied on the connecting plate of the reinforcement cover, realizing automatic application of the flux, which is convenient for subsequent welding.

[0080] In order to clean the nozzle of the laser welding gun, this embodiment provides the following solution:

[0081] In the present embodiment, the first welding gun cleaning component 3 comprises a recovery tube 31, an external grinding component 32 and an internal cleaning component. A vertical guide plate 311 is installed inside the recovery tube 31. One side of the vertical guide plate 311 is a recovery chamber 312. The recovery chamber 312 is installed with an impurity extraction fan 313. The other side of the vertical guide plate 311 is slidably installed with a fifth motor 314. The top output end of the fifth motor 314 is connected to the main branch pipe 33. The top of the main branch pipe 33 is connected to the internal cleaning component. The internal cleaning component extends into the nozzle 281 of the first laser welding gun 28. The internal cleaning component is used to clean the protective lens 282 and the inner wall of the nozzle 281. The top of the recovery tube 31 is provided with an external grinding component 32. The external grinding component 32 is mounted on the outer wall of the outlet end of the nozzle 281. The external grinding component 32 is used to clean impurities on the outer wall of the nozzle 281. The recovery chamber 312 is used to recover impurities cleaned by the internal cleaning component and the external grinding component 32.

[0082] In the above scheme, after welding is completed, the third motor drives the second horizontal guide rail to rotate downward, the fourth motor drives the first laser welding gun vertically downward, and then the second moving block slides downward along the second vertical groove, so that the nozzle of the first laser welding gun is sleeved on the recovery tube, the main branch pipe and the internal cleaning component are inserted into the nozzle, and the external grinding component is sleeved on the end of the nozzle. In this way, the internal cleaning component and the external grinding component can work synchronously to perform synchronous internal and external grinding and cleaning.

[0083] In this embodiment, a restraining plate 331 is provided at the top of the main branch pipe 33, and an inner tube body 34 is vertically slidably penetrated inside the restraining plate 331. An upper ring body 341 is provided on the outer wall of the top end of the inner tube body 34. The top end of the inner tube body 34 slides outwardly from the main branch pipe 33. Lifting drive wheels 36 are installed on both sides of the inner tube body 34. The top of the inner tube body 34 is an open structure. A sealing plate 342 is provided at the bottom of the inner tube body 34. The upper part of the sealing plate 342 is a receiving cavity. The lower part of the sealing plate 342 is connected to the air pipe 343. The air pipe 34 3 penetrates the main branch pipe 33 and is connected to the air pump 315, which is arranged below the fifth motor 314; the top of the main branch pipe 33 is sealed and connected with a barrier airbag 37, a reel 35 is installed inside the accommodating cavity, a traction rope 351 is wound around the outer wall of the reel 35, and the traction end of the traction rope 351 is connected to the barrier airbag 37; the top of the main branch pipe 33 is symmetrically rotatably installed with a scraper 38, the upper surface of the scraper 38 is provided with a cleaning cotton pad 381, and the outer end of the scraper 38 is embedded with bristles 382; the internal cleaning component includes the following working steps:

[0084] S1, the scraper 38 is rotated downward and folded, the inner tube 34 is retracted into the main branch pipe 33, and the air barrier 37 is deflated and retracted into the accommodating chamber; the main branch pipe 33 and the scraper 38 extend into the nozzle 281;

[0085] S2, the scraper 38 rotates and unfolds to the horizontal level and fits the protective lens 282; the main branch pipe 33 rotates, and the cleaning cotton pad 381 wipes and cleans the protective lens 282;

[0086] S3, the main branch pipe 33 rotates and descends, and the bristles 382 clean the inner wall of the nozzle 281. At the same time, the inner tube body 34 extends outward, and the blocking airbag 37 expands into a circle and forms a blocking barrier above the scraper 38 to prevent dust from floating upward to the protective lens 282.

[0087] In the above scheme:

[0088] 1. In S1, the scraper and the inner tube are retracted, which makes it easier for the inner cleaning component to be inserted into the nozzle;

[0089] 2. In S2, the inner tube body is kept retracted and the scraper is unfolded, so that the cleaning cotton pad can contact the protective lens, and the retracted inner tube body and the retracted barrier airbag will not affect the contact of the cleaning cotton pad. In this way, when the main branch pipe rotates, the cleaning cotton pad can be driven to wipe and clean the protective lens;

[0090] 3. In S3, the inner tube extends outward, so that the barrier airbag extends outward, which is convenient for the barrier airbag to be deployed. The air pump supplies high-pressure gas to the recovery chamber, and then the high-pressure gas fills the barrier airbag, so that the barrier airbag is full and deployed. The inflated barrier airbag can form a barrier above the scraper, so that the secondary contamination of the protective lens can be avoided when the impurities on the inner wall of the nozzle are subsequently cleaned; when the main branch pipe rotates, the scraper and the inflated barrier airbag can be driven to rotate, so that the bristles can scrape and clean the inner wall of the nozzle, so as to achieve cleaning inside the nozzle;

[0091] 4. After the cleaning is completed, the air in the accommodating chamber is deflated, the barrier airbag is folded, and the reel-in wheel reels in the traction rope, which can drive the barrier airbag to be retracted into the accommodating chamber, thereby realizing automatic storage of the barrier airbag; then, the inner tube body is lowered and retracted, and the upper ring body and the top end of the main branch tube are stopped.

[0092] In this embodiment, the external grinding component 32 includes a lower cover body 321, and an upper tube body 322 is rotatably provided on the top of the lower cover body 321. The outer wall of the lower cover body 321 is provided with a sixth motor 324 that drives the upper tube body 322 to rotate. The inner wall of the upper tube body 322 is provided with a plurality of groups of grinding strips 323, and the shape of the grinding strips 323 is adapted to the outer wall shape of the nozzle 281. The bottom surface of the lower cover body 321 is provided with an inner lead-out hole 3211 and an outer lead-out hole 3212. The inner lead-out hole 3211 is relatively connected to the nozzle 281, and the outer lead-out hole 3212 is located on the outside of the grinding strip 323. The bottom surface of the lower cover body 321 is provided with an annular cover 325, and the annular cover 325 is connected to the recovery chamber 312.

[0093] In the above scheme: the sixth motor can drive the upper tube body to rotate, and then drive the grinding bar to rotate, so that the grinding bar can grind the end of the nozzle, and the polished impurities are discharged from the outer lead-out hole to the ring cover, and the impurities cleaned by the internal cleaning component are discharged to the ring cover through the inner lead-out hole, and finally the impurities in the ring cover are discharged to the recovery chamber by the impurity extraction fan, thereby realizing impurity recovery.

[0094] In this embodiment, the second storage component 48 includes a second storage box 481, and multiple groups of exterior panels 7 are stacked inside the second storage box 481. A second push plate 482 is vertically slidably installed on the bottom of the interior of the second storage box 481; second side box bodies 483 are slidably installed on the tops of both sides of the second storage box 481, and flux is stored in the second side box bodies 483. The top of the second side box body 483 is connected to a second outlet pipe 484, and the second outlet pipe 484 is relatively arranged on the two end welding surfaces of the exterior panel 7. The first position adjustment component includes a second support rod 41, a second longitudinal guide rail 42, a second vertical guide rail 43, and a third transverse guide rail 44; the first grabbing component includes a second driving rod 45 and an adsorption plate 451; the second support rod 41 is symmetrically provided with two groups, the second support rod 41 is vertically slidably installed on the conveying platform 1, the top of the second support rod 41 is vertically provided with a second longitudinal guide rail 42, the inner wall of the second longitudinal guide rail 42 is slidably installed with a second vertical guide rail 43, the inner wall of the second vertical guide rail 43 is provided with a third vertical groove and a fourth vertical groove, the inner part of the third vertical groove is vertically slidably installed with a fourth moving block, and the two groups of fourth moving blocks are vertically slidably installed. The third transverse guide rail 44 is rotatably installed between the blocks, and the sixth motor 441 is installed at the rotation connection. The second driving rod 45 is installed on the bottom surface of the third transverse guide rail 44 for horizontal sliding, and the output end of the second driving rod 45 is connected to the adsorption plate 451; the fifth moving block is vertically slidably installed inside each group of fourth vertical slots, the fourth transverse guide rail 49 is rotatably installed inside the fifth moving block, and the seventh motor 491 is installed at the rotation connection. The sixth moving block is slidably installed on the side wall of the fourth transverse guide rail 49, and the side wall of the sixth moving block is rotatably connected to the second laser welding gun 46, and the eighth motor 492 is installed at the rotation connection. In the above scheme, automatic adsorption, automatic bonding and automatic welding of the exterior panel can be realized, and the working principle is similar to that of the first double-seam welding assembly.

[0095] After welding is completed, in order to further improve the thermal insulation effect of the freezer shell, the following solution is given:

[0096] In this embodiment, the filling assembly 8 includes a movable hanging plate 81, a waste box 89 and a longitudinal guide rail 88. The longitudinal guide rail 88 is symmetrically arranged above the filling station. The movable hanging plate 81 is slidably installed between the two sets of longitudinal guide rails 88. A waste box 89 is arranged at one end of the filling station. A plurality of drainage heads 82 are arranged at the front end of the bottom of the movable hanging plate 81. The drainage heads 82 are used to fill the heat preservation agent into the heat preservation chamber. The rear end of the movable hanging plate 81 is provided with a first suction hole. 811 and a second suction hole 812, a guide plate 83 and a shovel plate 84 are provided at the bottom of the first suction hole 811, a suction cover 85 is provided at the bottom of the second suction hole 812, a first guide pipe 871 is provided above the first suction hole 811, a second guide pipe 872 is provided above the second suction hole 812, the outlet ends of the first guide pipe 871 and the second guide pipe 872 are connected in parallel with the suction pipe 87, and a cutting knife 86 is installed inside the first guide pipe 871.

[0097] In the above scheme: when the insulation liner moves to the filling station, the moving hanging plate moves to the top of the insulation liner, and the discharge head discharges the insulation agent into each insulation cavity. However, after foaming is completed, the moving hanging plate moves along the longitudinal guide rail, and the scraping plate contacts the surface of the insulation liner. The scraping plate scrapes off the foamed raised part, and then the excess material enters the first suction hole through the guide plate and the scraping plate. The cutting knife reciprocates to chop the excess material for subsequent suction. Subsequently, the suction hood passes over the insulation liner, and the suction hood attracts excess waste. The excess waste and broken waste are discharged into the waste box through the suction pipe.

[0098] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0099] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. 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. An automatic welding platform for refrigerator shell, characterized in that: include: A conveying platform, above which are arranged in sequence along the conveying direction a first welding station, a second welding station and a filling station, a plurality of groups of bearing components are installed on the top of the conveying platform, the bearing components include a base, the plurality of groups of bases are arranged on the conveying platform, a first motor is arranged in the middle of the surface of the base, the output end of the first motor is connected to a support plate, a plurality of groups of support rods are arranged at the edge of the support plate, a closing plate is arranged at the top of the plurality of groups of support rods, the support plate is used to support the thermal insulation liner from the bottom, the closing plate is sleeved on the bottom of the outer wall of the thermal insulation liner, and the closing plate is placed above the drainage hole on the side of the thermal insulation liner; a filling assembly is arranged on the filling station; The corner joint piece includes a corner plate, a middle joint block, an outer arc block and an outer baffle plate. The side section of the corner plate is a right angle. The corner plate is installed at the corner of the freezer liner by bolts. The length of the corner plate is the same as the height of the freezer liner. A middle joint block is provided at the corner of the side wall of the corner plate. The outer end of the middle joint block is provided with an outer arc block. The two sides of the outer arc block are first joint planes. The outer wall of the outer arc block is a chamfered angle surface. The middle part of the chamfered angle surface is a chamfered surface. The two sides of the chamfered angle surface are second joint planes. The second joint plane is vertically distributed with the first joint plane. Both the first joint plane and the second joint plane are welding surfaces. The end of the corner plate is vertically provided with an outer baffle plate. The outer side of the outer arc block is snap-fitted and connected to the chamfered guard plate. The chamfered guard plate is used to shield and protect the weld of the corner joint piece. A first double-seam welding assembly is symmetrically arranged on both sides of the first welding station. The first double-seam welding assembly includes a first position adjustment component, a first laser welding gun, a first grabbing component, a first storage component and a first welding gun cleaning component. The first position adjustment component is slidably mounted on the conveying platform. The first position adjustment component is used to drive the first laser welding gun and the first grabbing component to move. The first position adjustment component is located above the first storage component and the first welding gun cleaning component. The first storage component is used to stack and store multiple groups of reinforcement covers. A second double-seam welding assembly is symmetrically arranged on both sides of the second welding station. The second double-seam welding assembly includes a second position adjustment component, a second laser welding gun, a second grabbing component, a second storage component and a second welding gun cleaning component. The second position adjustment component is slidably mounted on the conveying platform. The second position adjustment component is used to drive the second laser welding gun and the second grabbing component to move. The second position adjustment component is located above the second storage component and the second welding gun cleaning component. The second storage component is used to stack and store multiple sets of exterior panels. The welding platform includes the following states: In the first state, the first grabbing component grabs the reinforcing cover and automatically fits it to the four sides of the outer wall of the thermal insulation inner tank, and the first laser welding gun welds the reinforcing cover to the outer wall of the thermal insulation inner tank, and the two sides of the reinforcing cover are thermal insulation cavities; after welding is completed, the first welding gun cleaning component cleans the impurities of the protective lens and the end of the barrel of the first laser welding gun; In the second state, the second gripping component absorbs and grips the exterior panel and automatically fits it to the outer walls of the multiple sets of reinforcement covers. The exterior panel and the reinforcement cover are pre-positioned and clamped, and the exterior panel is placed between the first docking planes of the two sets of corner docking parts. The second laser welding gun welds the two ends of the exterior panel; after welding, the second welding gun cleaning component cleans the impurities on the protective lens and the end of the barrel of the second laser welding gun; In the third state, the filling component fills the heat preservation chamber with the heat preservation agent.

2. The automatic welding platform for refrigerator shell according to claim 1, characterized in that: The reinforced cover comprises a U-shaped cover, connecting plates are symmetrically provided on both sides of the U-shaped cover, a partition is provided on the upper part of the interior of the U-shaped cover, and clamping holes are opened on the upper and lower parts of the outer wall of the U-shaped cover, and the two groups of clamping holes are respectively located at the upper and lower parts of the partition; in the first state, the top of the reinforced cover is flush with the top of the thermal insulation liner, and a flow gap is left between the bottom end of the reinforced cover and the closing plate; in the third state, the thermal insulation agent is filled along the flow gap to the bottom of the partition of each reinforced cover.

3. The automatic welding platform for refrigerator shell according to claim 2, characterized in that: The inner wall of the exterior panel is provided with multiple groups of clamping columns, which relatively penetrate the clamping holes, and the outer wall of the clamping column is symmetrically provided with spring plates, which cooperate to stop the inner side of the U-shaped cover; the top of the insulation liner and the insulation cavity is covered with a ring cover plate, and the bottom surface of the ring cover plate is vertically provided with multiple claws, which are engaged with the inner ends of the clamping columns.

4. The automatic welding platform for refrigerator shell according to claim 3 is characterized in that: The first position adjustment component includes a first support rod, a first longitudinal guide rail, a first vertical guide rail, and a first transverse guide rail; the first grabbing component includes a first driving rod, a back plate and a clamping plate; the first support rod is symmetrically provided with two groups, the first support rod is vertically slidably installed on the conveying platform, the top of the first support rod is vertically provided with a first longitudinal guide rail, the inner wall of the first longitudinal guide rail is slidably installed with a first vertical guide rail, the inner wall of the first vertical guide rail is provided with a first vertical groove and a second vertical groove, the first moving block is vertically slidably installed inside the first vertical groove, the first transverse guide rail is rotatably installed between the two groups of first moving blocks, and a second motor is installed at the rotating connection, and the bottom of the first transverse guide rail is provided with a first longitudinal guide rail. A first driving rod is installed on the surface for horizontal sliding, and the output end of the first driving rod is rotatably connected to the back plate and a switching motor is installed at the rotating connection. A clamping plate is installed on the inner wall of the back plate for opening and closing sliding, and the clamping plate is used to clamp the middle part of the end of the reinforcement cover. The switching motor drives the back plate to rotate so that the opening of the reinforcement cover faces the thermal insulation liner; a second moving block is installed vertically for sliding inside each group of second vertical grooves, a second horizontal guide rail is rotatably installed inside the second moving block and a third motor is installed at the rotating connection, a third moving block is slidably installed on the side wall of the second horizontal guide rail, and the side wall of the third moving block is rotatably connected to the first laser welding gun and a fourth motor is installed at the rotating connection.

5. The automatic welding platform for refrigerator shell according to claim 4, characterized in that: The first storage component includes a first storage box, which is installed between two groups of first support rods, and multiple groups of reinforcement covers with openings facing upward are stacked inside the first storage box, and a first push plate is vertically slidably installed on the bottom of the interior of the first storage box; first side box bodies are slidably installed on the top of both sides of the first storage box, and flux is stored in the first side box bodies. The top of the first side box body is connected to a first export pipe, and the first export pipe is placed parallel to the top of the first storage box, and a discharge hole is opened on the bottom of the first export pipe.

6. The automatic welding platform for refrigerator shell according to claim 5, characterized in that: The first welding gun cleaning component includes a recovery tube, an external grinding component and an internal cleaning component. A vertical guide plate is installed inside the recovery tube. One side of the vertical guide plate is a recovery chamber. The recovery chamber is installed with an impurity extraction fan. The other side of the vertical guide plate is slidably installed with a fifth motor. The top output end of the fifth motor is connected to the main branch pipe. The top of the main branch pipe is connected to the internal cleaning component. The internal cleaning component extends into the nozzle of the first laser welding gun. The internal cleaning component is used to clean the protective lens and the inner wall of the nozzle. An external grinding component is provided on the top of the recovery tube. The external grinding component is mounted on the outer wall of the outlet end of the nozzle. The external grinding component is used to clean impurities on the outer wall of the nozzle. The recovery chamber is used to recover impurities cleaned by the internal cleaning component and the external grinding component.

7. The automatic welding platform for refrigerator shell according to claim 6, characterized in that: The top of the main branch pipe is provided with a constraint plate, and the inner part of the constraint plate vertically slides through the inner tube body, the outer wall of the top end of the inner tube body is provided with an upper ring body, the top end of the inner tube body slides outwardly and extends the main branch pipe, and lifting drive wheels are installed on both sides of the inner tube body. The inner top of the inner tube body is an open structure, and the inner bottom of the inner tube body is provided with a sealing plate, and the upper part of the sealing plate is a accommodating chamber, and the lower part of the sealing plate is connected to the air pipe, which passes through the main branch pipe and is connected to the air pump, and the air pump is arranged below the fifth motor; the top of the main branch pipe is sealed and connected with a barrier airbag, and a winding wheel is installed inside the accommodating chamber, and a traction rope is wound around the outer wall of the winding wheel, and the traction end of the traction rope is connected to the barrier airbag; a scraper is symmetrically rotatably installed on the top of the main branch pipe, and a cleaning cotton pad is provided on the upper surface of the scraper, and bristles are embedded in the outer end of the scraper; the internal cleaning component includes the following working steps: S1, the scraper is rotated downward and folded, the inner tube body is retracted into the main branch pipe, the air blocking airbag is deflated and retracted into the receiving chamber; the main branch pipe and the scraper are extended into the nozzle; S2. The scraper rotates and unfolds to a horizontal position and fits the protective lens; the main branch pipe rotates and the cleaning cotton pad wipes and cleans the protective lens; S3. The main branch pipe rotates and descends, and the bristles clean the inner wall of the nozzle. At the same time, the inner tube extends outward, and the barrier airbag expands into a round shape and forms a barrier above the scraper to prevent dust from floating upward to the protective lens.

8. The automatic welding platform for refrigerator shell according to claim 7, characterized in that: The external grinding component includes a lower cover body, an upper tube body is rotatably provided on the top of the lower cover body, a sixth motor for driving the upper tube body to rotate is provided on the outer wall of the lower cover body, a plurality of groups of grinding strips are provided on the inner wall of the upper tube body, the shape of the grinding strips is adapted to the shape of the outer wall of the nozzle, an inner lead-out hole and an outer lead-out hole are provided on the bottom surface of the lower cover body, the inner lead-out hole is relatively connected with the nozzle, the outer lead-out hole is located on the outside of the grinding strip, and an annular cover is provided on the bottom surface of the lower cover body, which is connected with the recovery chamber.

9. The automatic welding platform for refrigerator shell according to claim 8, characterized in that: The second storage component includes a second storage box, multiple groups of exterior panels are stacked inside the second storage box, and a second push plate is vertically slidably installed on the bottom of the interior of the second storage box; second side box bodies are slidably installed on the top of both side surfaces of the second storage box, and flux is stored inside the second side box bodies. The top of the second side box bodies is connected to a second export pipe, and the second export pipe is relatively arranged on the two end welding surfaces of the exterior panels.

10. The automatic welding platform for refrigerator shell according to claim 9, characterized in that: The filling assembly includes a movable hanging plate, a waste box and a longitudinal guide rail. The longitudinal guide rail is symmetrically arranged above the filling station. A movable hanging plate is slidably installed between two sets of longitudinal guide rails. A waste box is provided at one end of the filling station. A plurality of drainage heads are provided at the front end of the bottom of the movable hanging plate. The drainage heads are used to fill the insulation agent into the insulation cavity. A first suction hole and a second suction hole are opened at the rear end of the movable hanging plate. A guide plate and a shovel plate are provided at the bottom of the first suction hole. A suction cover is provided at the bottom of the second suction hole. A first guide pipe is provided above the first suction hole. A second guide pipe is provided above the second suction hole. The outlet ends of the first guide pipe and the second guide pipe are connected in parallel with the suction pipe, and a cutting knife is installed inside the first guide pipe.

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