Curled Sheet Unit Welding Device

Abstract

The present invention discloses a welding device for a coiled sheet unit. The two opposite side walls of the base frame are open, forming a frame inner cavity. The top of the base frame includes longitudinal horizontal top rods symmetrically arranged in parallel on both sides. A longitudinal strip-shaped through hole is formed between the longitudinal horizontal rods. A scar removing device and a welding device that reciprocate horizontally along the longitudinal direction are further provided on the longitudinal horizontal top rods. A milling cutter and a welding head are provided at the bottom of the scar removing device and the welding device respectively. The milling cutter is movably connected to the scar removing device up and down, and the welding head is movably connected to the welding device up and down. The base frame is movably connected with a horizontal fixing plate, and the horizontal fixing plate reciprocates horizontally relative to the base frame. From the above structure, it can be seen that the welding device for the coiled sheet unit of the present invention realizes the continuous automatic welding of the sheet unit or the connecting bar unit, as well as the automatic removal of the welding scars after welding, improves the production efficiency, and ensures the surface quality of the annular plate unit after welding.

Description

Technical Field

[0001] The present invention relates to the technical field of hub processing and production, and particularly to a welding device for a coiled sheet unit. Background Art

[0002] A hub is the rotating part of the wheel core where the inner profile of the tire is connected to the wheel steel through columns, that is, the metal part that supports the tire and is installed on the shaft in the center. It is also called a rim, steel rim, wheel, or tire bell. Hubs come in a wide variety of types according to diameter, width, forming method, and material.

[0003] Generally, a hub is fixedly connected by a rim and spokes coaxially. For the rim, its production process generally involves cutting out aluminum plates that meet the size requirements according to the model size of the hub, and then welding the coiled aluminum plate units after coiling. In fact, for this production and processing method, the coiling device, bending device, welding device, and even the coiling device need to be adjusted or customized for different rim blanks corresponding to different current hub models. As a result, after each change in the hub model produced, the production equipment corresponding to the rim blank needs to be adjusted, resulting in a relatively high labor intensity and a reduced production efficiency.

[0004] Moreover, in order to save production costs, hub production enterprises hope that rims of different sizes can use as few types of blanks as possible. This can not only shorten the production time and advance the delivery date by stocking up in advance; but also facilitate purchasing raw materials in advance at a lower price according to the price of the raw materials and then carrying out production, thereby further reducing production costs; and it can also avoid downtime losses of production equipment and ensure the more efficient operation of the inventory and funds of the production enterprise. However, currently, for the production of hubs, it is all small-batch customized production. Since small-batch customized production requires replacing the corresponding equipment molds, and after replacing the equipment molds, it will involve debugging and trial production, and mass production can only be carried out after ensuring the product quality. This results in a relatively fixed and long production cycle for hub production, and relatively high production costs; and for the products of small-batch customized production, in order to avoid replenishment during the later transportation process and after-sales process, inventory also has to be reserved for the customized products, resulting in relatively high inventory costs; all of the above will further increase the final selling price of the product.

[0005] For this reason, the patent document with the application number 202111230454.4 provides a production process, which realizes the production of rims with different axial widths by using standard parts of large-batch rim blanks, reduces production costs, and effectively combines the large-scale production mode of the enterprise's production end to reduce costs with the small-batch customized production of the sales end.

[0006] However, currently on the market, there is no welding device that can meet the continuous and rapid welding processing in the above production process and will not generate additional stress after welding. Summary of the Invention

[0007] The object of the present invention is to overcome the deficiencies of the prior art and provide a curling sheet unit welding device. Through the action of the curling material welding device, continuous automated welding of the sheet unit or the connecting bar unit can be achieved, and the welding scars after welding can be automatically removed, improving production efficiency and ensuring the surface quality of the annular plate unit after welding. By means of the pressing plates symmetrically arranged on both sides of the strip-shaped through hole at the bottom of the longitudinal horizontal ejector rod, the two sides of the welding joint of the sheet can be fixed before welding, ensuring the flatness of the welding joint and avoiding the generation of additional stress at the welding joint of the sheet, which may affect the subsequent processing of the sheet. Through the structure of the longitudinal vertical ribs and the transverse vertical ribs fixedly connected to the bottom of the horizontal connecting cushion plate, the horizontal connecting cushion plate can provide sufficient supporting force for the horizontal fixing plate, avoiding the deformation of the horizontal fixing plate or the horizontal connecting cushion plate during welding or milling of the welding scar, which may affect the welding quality of the annular plate unit or the surface quality at the position of the welding scar, and further affecting subsequent production or resulting in defective products. The support blocks fixed on the side wall of the base frame on the side of the horizontal connecting cushion plate away from the transverse moving frame and the cushion blocks fixed to the bottom of the horizontal connecting cushion plate corresponding to the support blocks can ensure that when the horizontal connecting cushion plate moves to the position directly below the welding head and the milling cutter for welding and milling the welding scar, both ends of the horizontal connecting cushion plate are supported, thus ensuring that the horizontal connecting cushion plate will not deform due to stress, ensuring the welding quality and the quality of the surface of the annular plate at the welding scar position. Through the function of the marking groove, it can be ensured that the joint of the two ends of the sheet can be conveniently aligned with the position directly below the moving trajectories of the welding head and the milling cutter.

[0008] The technical solution adopted by the present invention is as follows:

[0009] The curled sheet material unit welding device comprises a base frame, wherein the two opposite side walls of the base frame are open to form a frame inner cavity, the top of the base frame comprises longitudinal horizontal push rods arranged in parallel and symmetrically on both sides, a longitudinal strip through hole is formed between the longitudinal horizontal push rods, and a weld scar removal device and a welding device driven by a longitudinal drive device A to reciprocate along the longitudinal horizontal direction are also provided on the longitudinal horizontal push rods, the weld scar removal device and the welding device are fixedly connected, a milling cutter and a welding head are respectively provided at the bottom of the weld scar removal device and the bottom of the welding device corresponding to the position of the strip through hole, the milling cutter is located in the strip through hole, and is horizontally rotated around a vertical axis by a milling cutter driving motor, and the milling cutter driving motor is movable up and down with the weld scar removal device through a milling cutter lifting device. The welding head is dynamically connected, and is correspondingly located in the strip through hole. It is movably connected to the welding device up and down through the welding head lifting device. The longitudinal driving device A is fixedly connected to the base frame. The base frame is also movably connected with a longitudinally arranged horizontal fixed plate. The horizontal fixed plate is reciprocated horizontally relative to the base frame through the transverse driving device A. The transverse driving device A is fixedly connected to the base frame. When the horizontal fixed plate moves horizontally to the maximum stroke on one side, the horizontal fixed plate is located outside the base frame. When the horizontal fixed plate moves horizontally to the maximum stroke on the other side, the horizontal fixed plate is located directly below the strip through hole and corresponds to the milling cutter and the welding head. The longitudinal movement range of the milling cutter and the welding head is greater than the longitudinal range of the horizontal fixed plate.

[0010] A further improvement of the present invention is that the horizontal push rod is rotatably connected to a longitudinal screw rod A which is transmission-connected to the longitudinal drive device A, the weld scar removal device and the welding device are respectively provided with a nut pair A matching the longitudinal screw rod A, and the two ends of the horizontal push rod corresponding to the longitudinal screw rod A are rotatably connected to the longitudinal screw rod A through a bearing seat A.

[0011] A further improvement of the present invention is that the horizontal fixed plate reciprocates along the transverse horizontal frame through a transverse movable frame, the transverse horizontal frame is fixedly connected to the inner bottom of the base frame, the top surface of the transverse horizontal frame is rotatably connected with a transverse screw rod A, the two ends of the transverse screw rod A are respectively rotatably connected to the transverse horizontal frame through a bearing seat B, the bottom of the horizontal fixed plate is fixedly connected with a transverse movable frame, the transverse movable frame is provided with a nut pair B matching the transverse screw rod A, and the transverse drive device A is transmission-connected to one end of the transverse screw rod A.

[0012] A further improvement of the present invention is that the horizontal fixed plate is fixedly connected to the top surface of the horizontal connecting pad, the transverse movable frame is fixedly connected to one end of the bottom of the horizontal connecting pad, and a support block is fixed to the side wall of the base frame located on the side of the horizontal connecting pad away from the transverse movable frame. When the horizontal fixed plate moves to the position of the longitudinal strip through hole, the support block fits with the bottom surface of the horizontal connecting pad at the bottom of the horizontal fixed plate at the position of the longitudinal strip through hole.

[0013] A further improved solution of the present invention is that a longitudinal vertical rib is fixedly connected to the bottom of the horizontal connecting cushion plate. The longitudinal vertical rib extends to be fixedly connected to the transverse moving frame and extends downward to the bottom of the side wall of the transverse moving frame facing the horizontal connecting cushion plate. The end face of the longitudinal vertical rib away from the transverse moving frame is an inclined plane that slopes upward along the direction away from the transverse moving frame. And the connection part of the longitudinal vertical rib and the horizontal connecting cushion plate is located on the side of the horizontal fixing plate facing away from the transverse moving frame. On the bottom of the horizontal connecting cushion plate, a plurality of transverse vertical ribs are symmetrically fixed at equal intervals corresponding to the two side end faces of the longitudinal vertical rib. The transverse vertical ribs are fixedly connected to the longitudinal vertical rib.

[0014] A further improved solution of the present invention is that a cushion block is fixedly provided corresponding to the support block at the bottom of the horizontal connecting cushion plate.

[0015] A further improved solution of the present invention is that pressing plates are respectively symmetrically provided on both sides of the strip-shaped through hole at the bottom surface of the longitudinal horizontal top rod. The pressing plates are vertically movably connected to the longitudinal horizontal top rod through a pressing plate lifting device. The pressing plates are located at the middle position of the horizontal fixing plate corresponding to the longitudinal direction.

[0016] A further improved solution of the present invention is that a plurality of pressing plates are provided on one side of the strip-shaped through hole. The pressing plates are evenly distributed within the range of the horizontal fixing plate along the length direction of the strip-shaped through hole.

[0017] A further improved solution of the present invention is that locking clamp blocks for fixing both ends of the material plate are respectively provided at the longitudinal two ends of the top surface of the horizontal fixing plate.

[0018] A further improved solution of the present invention is that a strip-shaped marking groove is further provided on the top surface of the horizontal fixing plate. When the horizontal fixing plate moves to the position of the strip-shaped through hole, the marking groove is located directly below the walking track of the welding head. The joint of both ends of the sheet metal unit fixedly connected to the horizontal fixing plate corresponds to the marking groove.

[0019] A further improved solution of the present invention is that the length of the marking groove is greater than the welding length of the sheet metal unit.

[0020] The beneficial effects of the present invention are as follows:

[0021] First, the coiled sheet metal unit welding device of the present invention can realize the continuous automatic welding of the sheet metal unit or the connecting strip unit and the automatic removal of the weld beads after welding through the action of the coiled material welding device, improving the production efficiency and ensuring the surface quality of the annular plate unit after welding.

[0022] Second, for the coiled sheet unit welding device of the present invention, by means of the pressing plates symmetrically arranged on both sides of the strip-shaped through hole at the bottom of the longitudinal horizontal ejector rod, the two sides of the welding joint of the sheet can be fixed before welding, ensuring the flatness of the welding joint and avoiding the generation of additional stress at the welding joint of the sheet, which may affect the subsequent processing of the sheet.

[0023] Third, for the coiled sheet unit welding device of the present invention, through the structure of the longitudinal vertical ribs and the transverse vertical ribs fixedly connected to the bottom of the horizontal connecting cushion plate, the horizontal connecting cushion plate can provide sufficient supporting force to the horizontal fixing plate, avoiding the deformation of the horizontal fixing plate or the horizontal connecting cushion plate during welding or scar milling, which may affect the welding quality of the annular plate unit or the surface quality at the scar position, and further affect the subsequent production or lead to the generation of defective products.

[0024] Fourth, for the coiled sheet unit welding device of the present invention, the support blocks fixed on the side wall of the base frame on the side of the horizontal connecting cushion plate away from the transverse moving frame and the cushion blocks fixed to the bottom of the horizontal connecting cushion plate corresponding to the support blocks can ensure that when the horizontal connecting cushion plate moves to the position directly below the corresponding welding head and milling cutter for welding and scar milling, both ends of the horizontal connecting cushion plate are supported, thus ensuring that the horizontal connecting cushion plate will not deform due to stress, and ensuring the welding quality and the quality at the position of the surface scar of the annular plate.

[0025] Fifth, for the coiled sheet unit welding device of the present invention, through the function of the marking groove, it can ensure that the joint positions at both ends of the sheet can be conveniently aligned with the positions directly below the moving trajectories of the welding head and the milling cutter. Description of the Drawings

[0026] Figure 1 It is a top view schematic diagram of the processing production line for the standard parts of the rim blank.

[0027] Figure 2 It is an enlarged top view schematic diagram of the coiling device for the connecting bar unit.

[0028] Figure 3 It is an enlarged top view schematic diagram of the coiled material welding device.

[0029] Figure 4 It is an enlarged right view schematic diagram of the coiled material welding device.

[0030] Figure 5 It is an enlarged top view schematic diagram of the rim cylinder trimming device.

[0031] Figure 6 It is an enlarged front view schematic diagram of the rim cylinder trimming device.

[0032] Figure 7 It is an enlarged top view schematic diagram of the annular plate unit fixture of the robot.

[0033] Figure 8 This is an enlarged schematic diagram of the front view of the robot's annular plate unit fixture.

[0034] Figure 9 A magnified left view of the robot's annular plate unit fixture with the left clamp hidden.

[0035] Figure 10 This is an enlarged schematic diagram of the front view of the robot's clamping roller. DETAILED DESCRIPTION

[0036] Combination Figures 1 to 10 It can be seen that the rim blank standard parts processing production line includes a plate sawing device 1, a plate unit rolling device 5, an annular plate unit trimming device 6, an annular plate unit expanding device 7, a rim flanging device 8, a rim tube trimming device 9, a rim curling device 10 and a tread shaping device 11 in sequence along the material production and transmission direction, and a curling material welding device 4 is also provided on one side of the plate unit rolling device 5; between the annular plate unit trimming device 6 and the annular plate unit expanding device 7, between the annular plate unit expanding device 7 and the rim flanging device 8, between the rim flanging device 8 and the rim tube trimming device 9, between the rim tube trimming device 9 and the rim curling device 10, and between the rim curling device 10 and the tread shaping device 11, the annular unit plates are circulated by robots respectively, and the robots are located on the side of the curling material welding device 4 corresponding to the plate unit rolling device 5.

[0037] The sheet material sawing device 1 includes a sawing table 30, and a sheet material loading rack 33 is fixedly connected to the sawing table 30 on one side away from the sheet material unit rolling device 5. A strip hole is provided on the top surface of the sawing table 30 in a direction perpendicular to the sheet material loading rack 33. A vertically arranged saw blade is rotatably connected inside the sawing table 30, and the top of the saw blade extends upwardly to the strip hole and reciprocates along the strip hole. A horizontal cross bar 31 is fixedly connected above the top surface of the sawing table 30 corresponding to the strip hole, and horizontal pressure strips are respectively provided at the bottom of the horizontal cross bar 31 corresponding to the two sides of the strip hole, and the horizontal pressure strips are movably connected to the horizontal cross bar 21 up and down through a pneumatic piston cylinder 32.

[0038] The curled sheet unit welding device 4 includes a base frame 58, and the two opposite side walls of the base frame 58 are open to form a frame inner cavity 77. The top of the base frame 58 includes longitudinal horizontal push rods 59 arranged in parallel and symmetrically on both sides, and a longitudinal strip-shaped through hole 63 is formed between the longitudinal horizontal push rods 59. The longitudinal horizontal push rods 59 are also provided with a weld scar removal device 60 and a welding device 62 driven by a longitudinal drive device A65 to reciprocate along the longitudinal horizontal direction. The weld scar removal device 60 and the welding device 62 are fixedly connected, and a milling cutter and a welding head are respectively provided at the bottom of the weld scar removal device 60 and the bottom of the welding device 62 corresponding to the position of the strip-shaped through hole 63. The milling cutter corresponds to being located in the strip-shaped through hole 63, and is horizontally rotated around a vertical axis by a milling cutter driving motor, and the milling cutter driving motor is connected to the weld scar removal device 60 up and down through a milling cutter lifting device. The welding head is movably connected, and is located in the strip through hole 63. It is movably connected to the welding device 62 up and down through the welding head lifting device. The longitudinal driving device A65 is fixedly connected to the base frame 58. The base frame 58 is also movably connected with a longitudinally arranged horizontal fixing plate 61. The horizontal fixing plate 61 reciprocates horizontally relative to the base frame 58 through the transverse driving device A69. The transverse driving device A69 is fixedly connected to the base frame 58. When the horizontal fixing plate 61 moves horizontally to the maximum stroke on one side, the horizontal fixing plate 61 is located outside the base frame 58. When the horizontal fixing plate 61 moves horizontally to the maximum stroke on the other side, the horizontal fixing plate 61 is located directly below the strip through hole 63 and corresponds to the milling cutter and the welding head. The longitudinal movement range of the milling cutter and the welding head is greater than the longitudinal range of the horizontal fixing plate 61.

[0039] The horizontal push rod 59 is rotatably connected to a longitudinal screw rod A64 which is transmission-connected to the longitudinal driving device A65. The weld scar removal device 60 and the welding device 62 are respectively provided with a nut pair A matching the longitudinal screw rod A64. The two ends of the horizontal push rod 59 corresponding to the longitudinal screw rod A64 are rotatably connected to the longitudinal screw rod A64 through a bearing seat A66.

[0040] The horizontal fixed plate 61 reciprocates along the horizontal transverse frame 79 through the horizontal transverse moving frame 68. The horizontal transverse frame 79 is fixedly connected to the inner bottom of the base frame 58. The top surface of the horizontal transverse frame 79 is rotatably connected to a horizontal screw rod A80. The two ends of the horizontal screw rod A80 are rotatably connected to the horizontal transverse frame 79 through bearing seats B70 respectively. The bottom of the horizontal fixed plate 61 is fixedly connected to the horizontal transverse moving frame 68. The horizontal transverse moving frame 68 is provided with a nut pair B matching the horizontal screw rod A80. The horizontal drive device A69 is transmission-connected to one end of the horizontal screw rod A80.

[0041] The horizontal fixed plate 61 is fixedly connected to the top surface of the horizontal connection backing plate 67. The transverse moving frame 68 is fixedly connected to one end of the bottom of the horizontal connection backing plate 67. A support block 73 is fixed to the side wall inside the base frame 58 on the side of the horizontal connection backing plate 67 away from the transverse moving frame 68. When the horizontal fixed plate 61 moves to the position of the longitudinal strip-shaped through hole 63, the bottom surface of the horizontal connection backing plate 67 at the position of the support block 73 is in contact with the bottom surface of the horizontal fixed plate 61 at the longitudinal strip-shaped through hole 63 position.

[0042] Longitudinal vertical ribs 71 are fixedly connected to the bottom of the horizontal connection backing plate 67. The longitudinal vertical ribs 71 extend to be fixedly connected to the transverse moving frame 68 and extend downward to the bottom of the side wall of the transverse moving frame 68 facing the horizontal connection backing plate 67. The end face of the end of the longitudinal vertical rib 71 away from the transverse moving frame 68 is an inclined surface that slopes upward along the direction away from the transverse moving frame 68. And the connection position of the longitudinal vertical rib 71 and the horizontal connection backing plate 67 is on the side of the horizontal fixed plate 61 facing away from the transverse moving frame 68. A plurality of transverse vertical ribs are symmetrically and fixedly connected to the bottom of the horizontal connection backing plate 67 at the two side end faces corresponding to the longitudinal vertical rib 71, and the transverse vertical ribs are fixedly connected to the longitudinal vertical rib 71.

[0043] A cushion block 72 is fixedly provided at the bottom of the horizontal connection backing plate 67 corresponding to the support block 73.

[0044] On the bottom surface of the longitudinal horizontal top rod 59, on both sides of the strip-shaped through hole 63, pressing plates 74 are respectively symmetrically provided. The pressing plates 74 are vertically movably connected to the longitudinal horizontal top rod 59 through a pressing plate lifting device 75, and the pressing plates 74 are at the middle position of the horizontal fixed plate 61 in the longitudinal direction.

[0045] A plurality of pressing plates 74 are provided on one side of the strip-shaped through hole 63, and the pressing plates 74 are evenly distributed within the range of the horizontal fixed plate 61 along the length direction of the strip-shaped through hole 63.

[0046] Locking clamp blocks 76 for fixing both ends of the material plate are respectively provided at the longitudinal two ends of the top surface of the horizontal fixed plate 61.

[0047] A strip-shaped marking groove (not shown in the specification drawings) is further provided on the top surface of the horizontal fixed plate 61. When the horizontal fixed plate 61 moves to the position of the strip-shaped through hole 63, the marking groove is located directly below the walking track of the welding head, and the joint positions of both ends of the sheet metal unit fixedly connected to the horizontal fixed plate 61 correspond to the marking groove.

[0048] The length of the marking groove is greater than the welding length of the sheet metal unit.

[0049] The sheet material unit rolling device 5 includes a horizontal base 34, a horizontally arranged driving roller 35 is provided in the middle of the horizontal base 34, one end of the driving roller 35 is transmission-connected to a roller driving device 39 fixedly connected to the horizontal base 34 through a roller transmission device, and a bearing seat D37 swingingly connected to the horizontal base 34 is provided at the other end, and the bearing seat D37 swings in a direction facing or away from the driving roller 35. When the bearing seat D37 rotates to the maximum stroke facing the driving roller 35, the bearing seat D37 is vertical and rotationally connected to the driving roller 35 located above. When the bearing seat D37 rotates to the maximum stroke facing away from the driving roller 35, the bearing seat D37 is vertical and rotationally connected to the driving roller 35 located above. When the driving roller 35 is at the upper end, the bearing seat D37 is separated from the driving roller 35 located above; the horizontal base 34 is located below the driving roller 35 and is provided with a driven roller A in parallel, and the two ends of the driven roller A are rotatably connected to the horizontal base 34 through bearing seats C respectively, and the bearing seat C is connected to the horizontal base 34 through a roller lifting and adjusting device A, and the horizontal base 34 is provided with driven rollers B36 arranged parallel to the driving roller 35 on both sides of the driving roller 35, and the two ends of the driven roller B36 are rotatably connected to their own bearing seats E38 respectively, and the bearing seats E38 are movably connected to the horizontal base 34 up and down through the roller lifting and adjusting device B.

[0050] A lever 40 is provided on the top surface of the horizontal base 34 and is capable of reciprocating horizontal movement along an axial direction parallel to the driving roller 35. One end of the lever 40 extends to the position of the driving roller 5 located above. The other end of the lever 40 is fixedly connected to a nut pair C. The nut pair C is transmission-connected to a transverse screw rod B41 provided on the top surface of the horizontal base 34. Both ends of the transverse screw rod B41 are rotationally connected to the horizontal base 34 through a bearing seat F. One end of the transverse screw rod B41 is driven and connected by a lever driving device fixedly connected to the horizontal base 34. When the transverse screw rod B41 drives the lever 40 to move to the maximum stroke facing the roller driving device 39 through the nut pair C, the lever 40 fits with the roller driving device 39. When the transverse screw rod B41 drives the lever 40 to move to the maximum stroke facing the roller driving device 39 through the nut pair C, the lever 40 is separated from the driving roller 35 located above.

[0051] The trimming device 6 for the annular plate unit includes a horizontal base 81 with a support device 107 at the bottom. On the top surface of the horizontal base 81, there is an annular plate expanding device 82 rotatably connected about a vertical axis. On the top surface of the horizontal base 81, on one side of the annular plate expanding device 82, there is also a cutting tool 101. The cutting edge of the cutting tool 101 points to the annular plate expanding device 82. The cutting tool 101 is fixedly connected to a tool holder 100. The tool holder 100 is vertically adjusted and connected to a tool holder lifting and adjusting device. The tool holder lifting and adjusting device is connected to a tool holder horizontal adjusting device. The tool holder horizontal adjusting device is arranged on the horizontal base 81, and the tool holder lifting and adjusting device is arranged on the tool holder horizontal adjusting device. The tool holder 100 is arranged on the side of the tool holder lifting and adjusting device facing the annular plate expanding device 82. The rotation driving device 83 of the annular plate expanding device 82 is connected to the bottom of the horizontal base 81.

[0052] The annular plate expanding device 82 includes a vertical sleeve 89 fixedly connected to the top surface of the horizontal base 81. The output shaft 93 of the rotation driving device 83 passes upward through the horizontal base 81 and extends into the vertical sleeve 89, and then extends upward out of the vertical sleeve 89 and contacts a plurality of expanding unit blocks evenly distributed coaxially. The expanding unit block includes an annular plate expanding unit 85 and an output shaft contact unit 86 fixedly coaxially through a connecting vertical plate 87. The annular plate expanding unit 85 is formed by evenly dividing the side wall of the same cylinder into a plurality of petal-like structures. The output shaft contact unit 86 is formed by evenly dividing the side wall of the same cone into a plurality of petal-like structures. The upper side wall of the output shaft 93 is a cone structure that matches and contacts the output shaft contact unit 86. The diameter of the top of the cone is larger than the diameter of the bottom of the cone. The inner diameter of the vertical sleeve 89 is greater than or equal to the maximum diameter of the cone. The rotation driving device 83 is vertically movably connected to the horizontal base 81 through a lifting driving device A91 fixed to the bottom surface of the horizontal base 81.

[0053] The lifting driving device A91 is a lifting cylinder and is fixedly connected to the bottom of the horizontal base 81 through a connecting frame 98. The end of the telescopic rod 92 of the lifting driving device A91 is fixedly connected to the rotation driving device 83.

[0054] A cone sleeve 88 is coaxially sleeved and fixed on the top side wall of the output shaft 93. The shaft hole of the cone sleeve 88 matches a connecting shaft rod 94 coaxially arranged at the top end of the output shaft 93. The boss formed around the connecting shaft rod 94 at the top end of the output shaft 93 is a limiting boss for the cone sleeve 88. The end of the connecting shaft rod 94 facing away from the output shaft 93 is detachably fixedly connected with a fastening pressing plate 95 through a fastening bolt 99. The fastening pressing plate 95 axially limits and fixedly connects the cone sleeve 88 to the limiting boss.

[0055] The top pipe opening of the vertical sleeve 89 is provided with an annular horizontal plate 90 outwardly, and the bottom edges of the connecting vertical plate 87 and the annular plate expansion unit 85 are flush and in contact with the top surface of the annular horizontal plate 90.

[0056] On the top surface of the horizontal base 81, there are multiple horizontal support plates 84 evenly distributed on the outside of the vertical pipe sleeve 89 and centered on the axis of the vertical pipe sleeve 89. The horizontal support plates 84 are connected to the horizontal base 81 through a support frame 96. The top surface of the horizontal support plate 84 is lower than the bottom of the annular plate expansion device 82. The distance between the side edge of the horizontal support plate 84 facing away from the vertical sleeve 89 and the axis of the vertical sleeve 89 is greater than the outer diameter of the annular plate unit.

[0057] The support frame 96 is connected to the horizontal support plate 84 through a lifting drive device B97. The lifting drive device B97 is fixedly connected to the support frame 96 and drives the horizontal support plate 84 to be movably connected up and down. When the horizontal support plate 84 moves upward to the maximum stroke, the top surface of the horizontal support plate 84 is flush and lower than the bottom of the annular plate expansion device 82.

[0058] The tool holder horizontal adjustment device includes a horizontal seat 103, in which a horizontal screw is rotatably connected, and the axial direction of the horizontal screw is the same as that of the blade of the cutting tool 101. One end of the horizontal seat 103 is fixedly connected to a translation drive device 105 for driving the horizontal screw to rotate. The tool holder lifting and adjusting device includes a lifting seat 104, and the bottom of the lifting seat 104 is fixedly connected to a nut pair D that is transmission-connected to the horizontal screw and reciprocates along the axial direction of the horizontal screw. A vertical screw is rotatably connected to the lifting seat 104, and the top of the lifting seat 104 is fixedly connected to a lifting drive device C106 that drives the vertical screw to rotate. The tool holder 100 is fixed with a matching nut pair E corresponding to the vertical screw, and reciprocates along the axial direction of the vertical screw.

[0059] The cutting knife 101 is fixedly connected to the knife holder 100 via a knife seat 102 . The cutting knife 101 can be fixedly connected to the knife seat 102 in an adjustably manner along the direction in which the cutting edge of the cutting knife 101 points.

[0060] Two cutting knives 101 are fixedly connected to the tool holder 100 . The cutting knives 101 are fixed to the tool holder 100 through respective tool seats 102 so as to be adjustable up and down. The cutting knives 101 are located in the same vertical plane.

[0061] Vertical baffles 108 are fixedly provided on the edge of the top surface of the horizontal base 81 close to the annular plate expansion device 82, the edge close to the cutting blade 101, and the edge facing away from the robot.

[0062] On the side where the annular plate unit trimming device 6 is located, there is a robot A12 on the side where the coiled material welding device 4 is located. On the side where the annular plate unit flaring device 7 is located, there is a robot B14 on the side where the coiled material welding device 4 is located. On the side where the rim flanging device 8 is located, there is a robot C16 on the side where the coiled material welding device 4 is located. On the side where the rim cylinder trimming device 9 is located, there is a robot D18 on the side where the coiled material welding device 4 is located. On the side where the rim curling device 10 is located, there is a robot E20 on the side where the coiled material welding device 4 is located. On the side where the tire mounting surface shaping device 11 is located, there is a robot F22 on the side where the coiled material welding device 4 is located. On the side of the robot A12 facing away from the robot B14, there is a turnover table A. Between the robot A12 and the robot B14, there is a turnover table B13. Between the robot B14 and the robot C16, there is a turnover table C15. Between the robot C16 and the robot D18, there is a turnover table D17. Between the robot D18 and the robot E20, there is a turnover table E19. Between the robot E20 and the robot F22, there is a turnover table F21. On the side of the robot F22 facing away from the robot E20, there is a turnover table G23.

[0063] At the end parts of the robot A12, robot B14, robot C16, robot D18, robot E20 and robot F22, there are respectively annular plate unit clamps. The annular plate unit clamp includes a clamp substrate 109. At both ends of the length direction of one end face of the clamp substrate 109, there are symmetrically arranged clamping plates 110 respectively. The clamping plates 110 move towards or away from each other simultaneously through clamping plate driving devices 114. The clamping plate driving devices 114 are fixedly connected to the end face of the clamp substrate 109 on the side facing away from the clamping plates 110. On the end face of the clamp substrate 109 on the side facing away from the clamping plates 110, there is also fixedly connected a connecting head 118 for connecting with the robot. On the end faces of the clamping plates 110 facing each other, there are symmetrically arranged a driving pinch roller 111 and a driven pinch roller 112 respectively. The axis of the driving pinch roller 111 and the axis of the driven pinch roller 112 are parallel and perpendicular to the plane formed by the clamp substrate 109 and the clamping plates 110. On the end face of the clamp substrate 109 facing the side where the clamping plates 110 are located, there is also fixedly arranged a camera 119.

[0064] The clamp driving device 114 is fixedly connected to the clamp base plate 109 through the "C"-shaped plate 117, and the clamp base plate 109 passes through the "C"-shaped plate 117. The clamp driving device 114 is fixedly connected between the vertical plate A120 of the "C"-shaped plate 117 and the clamp base plate 109. The horizontal top plate and the horizontal bottom plate of the "C"-shaped plate 117 are respectively fixedly connected to the top surface and the bottom surface of the clamp base plate 109, and the horizontal top plate and the horizontal bottom plate of the "C"-shaped plate 117 extend to the side where the clamp 110 is located. A vertical plate B121 is fixedly connected between the horizontal top plate and the horizontal bottom plate of the "C"-shaped plate 117, and is located on the side of the clamp base plate 109 facing the clamp 110. The camera 119 is fixedly connected to the end surface of the vertical plate B121 facing away from the clamp base plate 109 through the connecting base plate 125, and the connecting head 118 is fixedly connected to the end surface of the vertical plate A120 facing away from the clamp base plate 109.

[0065] The end face of the clamp base plate 109 facing the vertical plate B121 is provided with a transmission gear 115 which is transmission-connected to the clamp driving device 114; the clamp plate 110 is provided with a transmission cross bar 113 which is arranged parallel to the clamp base plate 109 at one end corresponding to the clamp base plate 109, wherein the transmission cross bar 113 of one clamp plate 110 is located at the upper edge of the clamp base plate 109, and the transmission cross bar 113 of the other clamp plate 110 is located at the lower edge of the clamp base plate 109; the transmission gear 115 is located between the two transmission cross bars 113; the facing end faces of the transmission cross bars 113 are provided with racks 116 which are meshed with the transmission gear 115 for transmission; one end of the transmission cross bar 113 is fixed to the corresponding clamp plate 110, and the other end continues to extend toward the other clamp plate 110; when the clamp plate 110 moves back to the maximum stroke, the transmission cross bars 113 are still meshed with the transmission gear 115.

[0066] The clamp base plate 109 is provided with a strip guide groove 133 corresponding to the transmission cross bar 113 along the moving direction of the transmission cross bar 113, and the end surface of the transmission cross bar 113 facing the clamp base plate 109 is provided with a matching convex guide rod corresponding to the strip guide groove 133. The end surface of the transmission gear 115 facing away from the clamp base plate 109 is flush with the end surface of the transmission cross bar 113 facing away from the clamp base plate 109, and both are in contact with the vertical plate B121. The strip guide groove 133 is a dovetail groove.

[0067] The clamping plate driving device 114 is driven by the transmission gear 115 through the reduction gear box 124 , and the clamping plate driving device 114 is fixedly connected to the fixture base plate 109 through the reduction gear box 124 .

[0068] The horizontal top plate and the horizontal bottom plate of the "C"-shaped plate 117 are respectively provided with vertical plates C122 facing each other. There is a gap between the vertical plates C122. The camera 119 extends out from the gap between the vertical plates C122. The end faces of the vertical plates C122 facing away from the fixture substrate 109 are also fixedly connected with an annular lamp 123. The annular lamp 123 is coaxially arranged with the camera 119, and the irradiation direction of the annular lamp 123 is consistent with the imaging direction of the camera.

[0069] Both the active pinch roller 111 and the driven pinch roller 112 include a pinch roller shaft rod 138. The pinch roller shaft rod 138 is connected to the clamping plate 110 through a group of parallel connecting plates 128. One end of the connecting plate 128 is fixedly connected to the clamping plate 110, and the other end of the connecting plate 128 is respectively rotatably connected to the pinch roller shaft rod 138. The two ends of the pinch roller shaft rod 138 respectively pass through the corresponding connecting plates 128 upward and downward. The pinch roller shaft rod 138 is coaxially and fixedly connected with a pinch roller runner 127 at the position corresponding to between the connecting plates 128. The parts of the pinch roller shaft rod 138 corresponding to extending out of the connecting plates 128 are respectively coaxially and fixedly connected with pinch roller rolls 126. The diameters of the pinch roller runner 127 and the pinch roller rolls 126 are equal. A plurality of anti-slip convex rings 151 are equidistantly distributed along the axial direction on the circumferential side wall of the pinch roller roll 126. The anti-slip convex rings 151 are coaxially arranged with the pinch roller roll 126. The circumferential side wall surface of the pinch roller runner 127 is provided with anti-slip lines; A runner driving device 134 is fixedly connected between the connecting plates 128 corresponding to the active pinch roller 111. The runner driving device 134 is in transmission connection with the pinch roller shaft rod 138.

[0070] A pinch roller roll transmission wheel B136 is coaxially and fixedly connected to the runner output shaft of the runner driving device 134. A pinch roller roll transmission wheel A135 is coaxially and fixedly connected to the pinch roller shaft rod 138. The pinch roller roll transmission wheel A135 is in transmission connection with the pinch roller roll transmission wheel B136.

[0071] A pinch roller roll transmission wheel C137 that is in transmission connection with both the pinch roller roll transmission wheel A135 and the pinch roller roll transmission wheel B136 at the same time is rotatably connected to the connecting plate 128.

[0072] The pinch roller roll 126 includes a cylindrical groove 140 coaxially and fixedly connected to one end of the pinch roller shaft rod 138 extending out of the connecting plate 128. The notch of the cylindrical groove 140 faces away from the pinch roller shaft rod 138. The circumferential outer side wall of the cylindrical groove 140 is coaxially wrapped and fixed with an anti-slip cushion layer 141. A plurality of anti-slip convex rings 151 are equidistantly distributed along the axial direction on the circumferential outer side wall of the anti-slip cushion layer 141.

[0073] On the circumferential outer side wall of the anti-slip cushion layer 141, a plurality of annular grooves 150 coaxial with the anti-slip cushion layer 141 are provided at equal intervals along the axial direction. On the groove wall of the annular groove 150 on the side away from the pinch roll shaft rod 138, an annular strip is coaxially provided. The free end of the annular strip is connected to the groove bottom of the annular groove 150 through an annular elastic sheet 152. One side edge of the annular elastic sheet 152 is fixedly connected to the annular strip, and the other side edge of the annular elastic sheet 152 is fixedly connected to the groove bottom of the annular groove 150. The annular elastic sheet 152 pushes the annular strip out of the notch of the annular groove 150 to form an anti-slip convex ring 151.

[0074] Corresponding to the notch of the cylindrical groove 140, the anti-slip cushion layer 141 extends inwards to form an annular flange 145. The annular flange 145 extends inwards to the inner side wall 142 of the cylindrical groove 140 and is provided with a connecting sleeve 146 matching the inner side wall 142 of the groove. A plug body 129 is also provided in the cylindrical groove 140. The inner wall of the lumen 148 of the connecting sleeve 146 matches the side wall of the plug body 129, and the plug body 129 clamps and fixedly connects the connecting sleeve 146 to the inner side wall 142 of the groove.

[0075] At the center of the groove bottom in the cylindrical groove 140, a central screw 143 is provided. At the axis center of the end of the plug body 129 extending into the lumen 148 of the connecting sleeve 146, a threaded hole 149 matching the central screw 143 is provided. The inner wall of the lumen 148 of the connecting sleeve 146 is a conical hole. The circumferential side wall of the plug body 129 on the side corresponding to the threaded hole 149 is a conical arc surface 147 matching the conical hole, and the conical arc surface 147 and the conical hole are in interference fit.

[0076] On the side of the connecting plate 128 facing away from the pinch roll runner 127, a "Z"-shaped pinch roll runner limiting frame 130 is fixedly connected. One end of the pinch roll runner limiting frame 130 is provided with a mounting plate for fixing to the connecting plate 128. The mounting plate extends towards the side away from the corresponding pinch roll runner 126. The other end of the pinch roll runner limiting frame 130 is provided with a support block 131 extending towards the side of the pinch roll runner 126. The support block 131 is provided with a guiding groove 139 corresponding to the plug body 129. On the circumferential surface of the plug body 129, at the end edge away from the pinch roll runner 126, an operation convex ring 153 is coaxially provided. The guiding groove 139 matches the operation convex ring 153 and penetrates through the end faces of the support block 131 facing and facing away from the connecting plate 128. When the plug body 129 fixes the connecting sleeve 146 to the inner side wall 142 of the groove, the operation convex ring 153 is located in the guiding groove 139.

[0077] On the side of the pinch roll runner limiting frame 130 facing the mounting plate, a rib plate 132 is also provided.

[0078] The circumferential outer wall surface of the cylindrical groove 140 is evenly spaced with an annular corrugated structure 144 formed by annular protrusions and annular recesses, and the contact surface of the groove anti-slip cushion layer 141 with the circumferential outer wall of the cylindrical groove 140 is also correspondingly provided with a matching annular corrugated structure 144.

[0079] The pinch roller shaft rod 138 is rotatably connected to the connecting plate 128 through a bearing 154.

[0080] Circular plate unit positioning grooves are provided at the centers of the top surfaces of the turntable A, turntable B13, turntable C15, turntable D17, turntable E19, turntable F21, and turntable G23.

[0081] On one side of the robot A12 facing away from the annular plate unit trimming device 6, there is a defective product placement table A24. On one side of the robot B14 facing away from the annular plate unit flaring device 7, there is a defective product placement table B25. On one side of the robot C16 facing away from the rim flanging device 8, there is a defective product placement table C26. On one side of the robot D18 facing away from the rim cylinder trimming device 9, there is a defective product placement table D27. On one side of the robot E20 facing away from the rim curling device 10, there is a defective product placement table E28. On one side of the robot F22 facing away from the tread shaping device 11, there is a defective product placement table F29.

[0082] Corresponding to one side of the sheet sawing device 1 located on one side of the coiled material welding device 4, there is also a sheet unit stamping and curling device 3.

[0083] Corresponding to one side of the sheet sawing device 1 located on one side of the coiled material welding device 4, there is also a connecting strip unit curling device 2.

[0084] The connecting strip unit curling device 2 includes a base 42, one side of the top surface of the base 42 is fixedly connected to a guide inclined plate 43, a row of curling guide pressing wheels is provided on the top surface of the base 42, located on one side of the guide inclined plate 43, the curling guide pressing wheels include a plurality of curling guide pressing wheels A45 arranged in a row and a curling guide pressing wheel B46 located at one end of the row where the curling guide pressing wheel A45 is located, and a row of curling guide base wheels 44 is also provided on the base 42, located between the guide inclined plate 43 and the curling guide pressing wheel The distance between the curling guide base wheel 44 corresponding to one end of the curling guide pressure wheel B46 and the adjacent curling guide base wheel 44 is greater than the distance between the other two adjacent curling guide base wheels 44, and the distances between the other two adjacent curling guide base wheels 44 are equal, and the curling guide base wheel 44 corresponding to the curling guide pressure wheel B46 is located between the curling guide pressure wheel B46 and the curling guide pressure wheel A45 adjacent to the curling guide pressure wheel B46, and the curling guide pressure wheel A45 surface The line connecting the curling guide base wheel 44 to the curling guide base wheel 44 is parallel to the line connecting the curling guide base wheel 44 to the curling guide pressure wheel A45, and the distance between the line connecting the curling guide pressure wheel B46 to the curling guide base wheel 44 and the line connecting the curling guide pressure wheel A45 to the curling guide base wheel 44 is smaller than the distance between the line connecting the curling guide pressure wheel A45 to the curling guide base wheel 44 and the line connecting the curling guide base wheel 44 to the curling guide pressure wheel A45. The curling guide pressure wheel A45 is tilted upward in the arrangement direction away from the curling guide pressure wheel B46, the lowest point of the guide inclined plate 43 is lower than the curling guide pressure wheel B46, and the highest point of the guide inclined plate 43 is higher than the curling guide pressure wheel A45, the curling guide base wheel 44, the curling guide pressure wheel A45 and the curling guide pressure wheel B46 all rotate horizontally around the vertical axis, the curling guide base wheel 44 is connected to the base wheel driving device through the base wheel transmission device, and the curling guide base wheel 44 rotates at the same speed and in the same direction.

[0085] The guide inclined plate 43 extends out of the base 42 corresponding to one side edge of the curling guide pressing wheel B46, and the guide inclined plate 43 extends away from the side of the curling guide pressing wheel B46 to the position of the curling guide pressing wheel A45 farthest from the curling guide pressing wheel B46.

[0086] The axes of the curling guide pressing wheel A45 and the curling guide pressing wheel B46 are fixedly connected to the top surface of the slider 47, and the slider 47 is adjusted in the corresponding sliding groove 48 of the base 42 along the direction facing or facing away from the curling guide base wheel 44.

[0087] On the side wall of the base 42 close to the side where the curling guide pressure wheel A45 is located, at the position of the chute 48 corresponding to the curling guide pressure wheel A45, adjusting screws A51 are respectively connected by threads. One end of each adjusting screw A51 extends into the chute 48 and is rotatably connected to the slider 47 of the curling guide pressure wheel A45. On the side wall of the base 42 close to the side where the curling guide pressure wheel B46 is located, at the position of the chute 48 corresponding to the curling guide pressure wheel B46, a piston cylinder 54 is fixedly provided. The end of the piston rod 55 of the piston cylinder 54 extends into the chute 48 of the curling guide pressure wheel B46 and is fixedly connected to the slider 47 of the curling guide pressure wheel 46.

[0088] The slider 47 is fixedly connected with a connecting block 50. The adjusting screw A51 is rotatably connected to the connecting block 50, and the piston rod 55 is fixedly connected to the connecting block 50.

[0089] One end of the adjusting screw A51 located outside the base 42 is coaxially and fixedly connected with a handwheel 52. One end of the piston rod 55 facing away from the curling guide pressure wheel B46 extends out of the piston cylinder 54 to form an adjusting screw B56. An adjusting nut 57 is provided on the adjusting screw B56. When the piston rod 55 drives the curling guide pressure wheel B46 to move towards the curling guide base wheel 44 to the maximum stroke, the adjusting nut 57 contacts and limits the piston cylinder 54.

[0090] The part of the adjusting screw A51 extending into the chute 48 is connected with a locking nut 53. When the adjusting screw A51 adjusts the slider 47 to the designated position, the locking nut 53 is screwed and moved through the adjusting screw A51 to fit and fix with the connecting block 50.

[0091] On the two opposite side walls of the chute 48, slide rails 49 are respectively provided. Corresponding to the slide rails 49, matching track grooves are provided on the two side walls of the slider 47. The slider 47 moves along the chute 48 through the track grooves and the slide rails 49.

[0092] The connecting strip unit curling device 2 is located on the side of the sheet unit stamping and curling device 3 away from the curling material welding device 4.

[0093] When the standard parts of the rim blank are produced in this application, first, the sheet material is placed along the length direction of the sheet material loading rack 33 of the sheet material sawing device 1. Then, according to the size of the standard parts of the rim blank to be produced, a sheet material limiting device is fixedly connected to the side of the sawing table 30 facing away from the sheet material loading rack 33. The distance between the sheet material limiting device and the saw blade is equal to the circumference of the standard parts of the rim blank to be produced. Then, the sheet material is moved towards the sawing table 30 until it is in limiting contact with the sheet material limiting device. Then, the pneumatic piston cylinders 32 on the horizontal crossbars 21 drive the horizontal pressing strips to move downwards respectively, so that the horizontal pressing strips press and fix the sheet materials on both sides of the saw blade respectively. Finally, the saw blade is started and moves from one side of the sawing table 30 to the other side along the strip-shaped hole, and then the sheet material unit is sawed off from the sheet material. Then, the saw blade returns to the starting position, and the pneumatic piston cylinder 32 drives the horizontal pressing strip to move upwards to the maximum stroke. At this time, the sawed-off sheet material unit is transferred to the next process, and the above actions are repeated for the sheet material to continue cutting the sheet material.

[0094] The cut sheet material can be processed into a structure similar to that processed before welding in step S4 described in the specification and the accompanying drawings of the patent document with the application number 202111230454.4 through the sheet material unit rolling device 5 or the sheet material unit stamping and curling device 3, that is, the sheet material unit is processed into a similar ring structure at the joints of both ends, and flanges located in the same plane are provided at both ends of the sheet material unit to facilitate the next welding process.

[0095] When the sheet unit rolling and bending device 5 processes the sheet unit, the lever 40 is moved to one side of the roller driving device 39, and the bearing block D37 is swung upward to be connected to the driving roller 35; then the driven roller A is adjusted by the roller lifting and adjusting device A to make the vertical distance between the driven roller A and the driving roller 35 equal to the thickness of the sheet unit, and the driven roller B36 is adjusted by the roller lifting and adjusting device B to be flush with the driven roller A; then the roller driving device 39 is started, and one end of the sheet unit is placed on the driven roller B36, and the sheet unit is passed under the driving roller 35 in the order of the driven roller B36, the driven roller A, and the other driven roller B36; when a flange needs to be turned out at one end of the sheet unit, the driven roller B36 on the side far from the feeding end of the sheet unit rises under the action of the roller lifting and adjusting device B, so that a flange is formed at the end of the sheet unit passing through the driven roller B36, and the included angle between the flange and the sheet unit is a right angle or an obtuse angle; when the end flange of one end of the sheet unit is completed, then the driven roller B36 moves downward under the action of the roller lifting and adjusting device B, and the sheet unit is rolled and bent; when the other end of the sheet unit passes through the driven roller B36 on the side far from the feeding end of the sheet unit, the corresponding roller lifting and adjusting device B drives the driven roller B36 to rise again, and another flange corresponding to the previous flange is formed at the end of the sheet unit passing through the driven roller B36, and this flange and the previous flange are in the same plane; finally, the bearing block D37 swings to be separated from the driving roller 35, and then the lever 40 pushes out the sheet unit that has completed the rolling and bending process and is sleeved on the driving roller 35 along the direction of the driving roller 35 from the end corresponding to the bearing block D37.

[0096] When the sheet unit stamping and curling device 3 processes the sheet unit, the steps S1 to S3 described in the specification and the specification drawings of the patent document with the application number 202111230454.4 are adopted to stamp and curl the sheet unit into shape.

[0097] After the sheet metal unit has completed bending and flanging operations, it is welded by the coiled material welding device 4 to form an annular unit plate. The operations of the coiled material welding device 4 during the welding of the sheet metal unit are as follows: The sheet metal unit that has completed coiling and forming is sleeved on the horizontal fixed plate 61 located outside the base frame 58, and the flanges at both ends of the coiled and formed sheet metal unit are respectively fixed to the horizontal fixed plate 61 after being aligned by the locking clamp blocks 76. At this time, the flanged joint of the sheet metal unit is aligned with the marking groove provided on the horizontal fixed plate 61. Then, when the lateral moving frame 68 drives the horizontal fixed plate 61 with the sheet metal unit fixed on it to move to the position of the strip-shaped through hole 63, the flanged joint of the sheet metal unit fixed on the horizontal fixed plate 61 is located directly below the walking track of the welding head. Then, the scar removing device 60 and the welding device 62 are respectively started, and the milling cutter lifting device and the welding head lifting device respectively drive the milling cutter of the scar removing device 60 and the welding head of the welding device 62 to move downward to correspond to the joint with the top surface of the flange of the sheet metal unit fixed to the horizontal fixed plate 61 corresponding to the position of the strip-shaped through hole 63. Then, the longitudinal driving device A65 drives the scar removing device 60 and the welding device 62 to move towards the sheet metal unit simultaneously, so as to weld the flanged joint of the sheet metal unit and mill the welded scar, thereby ensuring that the welded part of the flange is flush with the rest of the flange; At this time, the finished welded annular plate unit is taken and the sheet metal unit to be welded is installed on the horizontal fixed plate 61 located on the other side of the lateral moving frame 68 and outside the base frame 58; When the welding head moves away from the flange of the sheet metal unit, the welding head lifting device drives the welding head to move upward to the maximum stroke and stops welding; When the milling cutter moves away from the sheet metal unit, the milling cutter lifting device drives the milling cutter to move upward to the maximum stroke and stops rotating; When the longitudinal driving device A65 drives the scar removing device 60 and the welding device 62 to move to the maximum stroke towards one side of the sheet metal unit, the longitudinal driving device A65 then drives the scar removing device 60 and the welding device 62 back to the starting position. At the same time, the lateral moving frame 68 drives the horizontal fixed plate 61 with the finished welded annular plate unit fixed on it to move outside the base frame 58 for taking materials and installing and fixing another sheet metal unit to be welded, and at the same time drives the horizontal fixed plate 61 with the sheet metal unit to be welded fixed on it to move into the base frame 58 for welding; Thus, continuous production is achieved.

[0098] The circular plate unit after welding is subjected to a circular restoration operation through the sheet unit rolling device 5. During the operation, the lever 40 is moved to one side of the roller driving device 39, and the bearing block D37 is swung downward to be separated from the driving roller 35; then the driven roller A is adjusted by the roller lifting and adjusting device A to make the vertical distance between the driven roller A and the driving roller 35 equal to the thickness of the sheet unit, and the driven roller B36 is adjusted by the roller lifting and adjusting device B to be flush with the driven roller A; then the circular plate unit is sleeved on the driving roller 35 from one end corresponding to the bearing block D37 of the driving roller 35, and then the bearing block D37 is swung to be connected to the driving roller 35; then the roller driving device 39 is started, and then the driven roller B36 is gradually lifted by the roller lifting and adjusting device B until the circular plate unit is rolled into a cylindrical shape; finally, the roller driving device 39 stops rotating, and the driven roller A and the driven roller B36 are gradually lowered to the starting position through the roller lifting and adjusting device A and the roller lifting and adjusting device B respectively. Then the bearing block D37 is swung to be separated from the driving roller 35, and then the lever 40 pushes out the circular plate unit that has completed the rolling and circular restoration processing and is sleeved on the driving roller 35 from the end corresponding to the bearing block D37 along the direction of the driving roller 35; the operator places the circular plate unit restored by the sheet unit rolling device 5 into the circular plate unit positioning groove on the turnover table A.

[0099] When the annular plate unit that has completed the circular restoration process is being trimmed by the annular plate unit trimming device 6, first, based on the axial dimension of the annular unit plate and the diameter dimension of the rim blank standard part to be processed, the height position of the tool holder 102 fixedly connected to the tool rest 100 is adjusted, and the height position of the tool rest 100 is adjusted through the lifting drive device C106, so that the distance between the cutting tools 101 conforms to the axial length of the annular plate unit required for the production of the rim blank standard part, and to ensure that the cutting amount of the cutting tools 101 for the annular unit plate is minimized; the translation drive device 105 and the robot A12 clamp the annular plate unit on the turntable A and rotate it to the annular plate unit trimming device 6, and the annular plate unit is sleeved on the annular plate expansion device 82 and then placed on the horizontal support plate 84. At this time, the output shaft 93 and the horizontal support plate 84 respectively rise to the maximum stroke under the action of the lifting drive device A91 and the lifting drive device B97; then the lifting drive device A91 drives the output shaft 93 to move downward, thereby driving the cone sleeve 88 on the upper part of the output shaft 93 to move downward, and further driving the output shaft contact unit 86 to expand outward under the action of the cone sleeve 88, so that the annular plate expansion unit 85 contacts and expands to be coaxially fixedly connected to the annular plate unit; then the lifting drive device B97 drives the horizontal support plate 84 to move downward to the maximum stroke for solidification. At this time, the horizontal support plate 84 is separated from the annular plate unit; then the rotation drive device 83 is started, and the translation drive device 105 drives the lifting seat 104 together with the cutting tools 101 to move towards the annular plate unit, and trims the edges at both ends of the annular plate unit; after the annular plate unit trimming is completed, the translation drive device 105 drives the cutting tools 101 away from the annular plate unit to the starting position; then the lifting drive device B97 drives the horizontal support plate 84 to move upward to contact the bottom edge of the annular plate unit; then the robot A12 clamps and fixes the annular plate unit still fixed to the annular plate expansion device 82, and then the lifting drive device A91 drives the output shaft 93 to move upward to the maximum stroke. At this time, the cone sleeve 88 on the upper part of the output shaft 93 is separated from the output shaft contact unit 86; finally, the robot A12 takes out the annular plate unit sleeved on the annular plate expansion unit 85 and rotates it;During the turnover process, the camera 119 set by the annular plate unit fixture of the robot A12 observes the quality of the outer circumferential side wall surface of the annular plate unit for one week. If the camera 119 observes a defect on the outer circumferential side wall surface of the annular plate unit, the robot A12 turns the annular plate unit to the defective product placement table A24 so that the operator can make a manual judgment on the annular plate unit judged as a defective product. If the operator judges that the surface defect of the annular plate unit is only oil stain or other impurities, or even a misjudgment of the camera 119, the surface of the annular plate unit is wiped clean, and when there is no annular plate unit on the turnover table B13, the annular plate unit is placed in the annular plate unit positioning groove of the turnover table B13. If the operator judges that the annular plate unit does have a defect, the operator turns the defective product to the defective product treatment area for subsequent processing; when the camera 119 of the robot A12 observes that there is no defect on the outer circumferential side wall surface of the annular plate unit, the robot A12 turns the annular plate unit into the annular plate unit positioning groove of the turnover table B13 for normal operation of subsequent processes; then when there is an annular plate unit in the annular plate unit positioning groove on the turnover table A, the robot A12 turns the annular plate unit on the turnover table A to the annular plate unit trimming device 6 for processing.;

[0100] When the idle robot B14 detects that there is an annular plate unit in the annular plate unit positioning groove on the turntable B13, the robot B14 transfers the annular plate unit on the turntable B13 to the annular plate unit flaring device 7 to flare the single of the annular plate unit, so that the annular plate unit forms the structure after completing step S6 as described in the specification and the accompanying drawings of the patent document with the application number 202111230454.4; then the robot B14 takes out the annular plate unit that has completed the flaring process and transfers it; during the transfer process, the camera 119 set on the annular plate unit fixture of the robot B14 observes the quality of the outer circumferential side wall surface of the annular plate unit for one week. When there are defects on the outer circumferential side wall surface of the annular plate unit observed by the camera 119, the robot B14 transfers the annular plate unit to the defective product placement table B25 so that the operator can make a manual judgment on the annular plate unit judged as a defective product. If the operator judges that the surface defect of the annular plate unit is only oil stain or other impurities, or even a misjudgment of the camera 119, after wiping the surface of the annular plate unit clean and when there is no annular plate unit on the turntable C15, the annular plate unit is placed in the annular plate unit positioning groove of the turntable C15. If the operator judges that the annular plate unit indeed has defects, the operator transfers the defective product to the defective product treatment area for subsequent treatment; when the camera 119 of the robot B14 observes that there are no defects on the outer circumferential side wall surface of the annular plate unit, the robot B14 transfers the annular plate unit to the annular plate unit positioning groove of the turntable C15 for normal operation of subsequent processes; then when there is an annular plate unit in the annular plate unit positioning groove on the turntable B13 again, the robot B14 transfers the annular plate unit on the turntable B13 to the annular plate unit flaring device 7 for processing.

[0101] When the idle robot C16 detects that there is an annular plate unit in the annular plate unit positioning groove on the turntable C15, the robot C16 rotates the annular plate unit on the turntable C15 to the flange flanging device 8 to turn the edge of the end flange of the flared end of the annular plate unit outwards, so that the annular plate unit forms the structure after the first step in the completion of step S7 as recorded in the specification and the accompanying drawings of the patent document with the application number 202111230454.4; then the robot C16 takes out the annular plate unit that has completed the flange flanging process and rotates it; during the rotation process, the camera 119 set on the annular plate unit fixture of the robot C16 observes the quality of the outer circumferential side wall surface of the annular plate unit for one week. When there are defects on the outer circumferential side wall surface of the annular plate unit observed by the camera 119, the robot C16 rotates the annular plate unit to the defective product placement table C26 so that the operator can make a manual judgment on the annular plate unit judged as a defective product. If the operator judges that the surface defect of the annular plate unit is only oil stain or other impurities, or even a misjudgment by the camera 119, after wiping the surface of the annular plate unit clean and when there is no annular plate unit on the turntable D17, the annular plate unit is placed in the annular plate unit positioning groove of the turntable D17. If the operator judges that the annular plate unit actually has defects, the operator rotates the defective product to the defective product treatment area for subsequent treatment; when the camera 119 of the robot C16 observes that there are no defects on the outer circumferential side wall surface of the annular plate unit, the robot C16 rotates the annular plate unit into the annular plate unit positioning groove of the turntable D17 for normal operation of the subsequent process; then when there is an annular plate unit in the annular plate unit positioning groove on the turntable C15 again, the robot C16 rotates the annular plate unit on the turntable C15 to the flange flanging device 8 for processing.

[0102] When the idle robot D18 finds that there is an annular plate unit in the annular plate unit positioning groove on the turnover table D17, the robot D18 rotates the annular plate unit on the turnover table D17 to the rim barrel finishing device 9, and reshapes the annular plate unit that has completed the rim flanging, so that the structures of the main body part, the flared part and the rim flanging part of the annular plate unit can be completely coaxial, and the roundness is guaranteed to meet the requirements for subsequent processing; then the annular plate unit that has completed the barrel shaping processing is taken out by the robot D18 and rotated; during the rotation process, the camera 119 set by the annular plate unit fixture of the robot D18 observes the quality of the outer circumferential side wall surface of the annular plate unit for one week. When the outer circumferential side wall surface of the annular plate unit observed by the camera 119 is defective, the robot D18 rotates the annular plate unit to the defective product placement table D27, so that the operator can inspect the annular plate judged as a defective product. The unit is manually judged. If the operator judges that the surface defect of the annular plate unit is only oil stains or other impurities, or even a misjudgment of the camera 119, the surface of the annular plate unit is wiped clean and the annular plate unit is placed in the annular plate unit positioning groove of the turntable E19 when there is no annular plate unit on the turntable E19. If the operator judges that the annular plate unit does have defects, the operator transfers the defective product to the defective product processing area for subsequent processing; when the camera 119 of the robot D18 observes that there are no defects on the outer circumferential side wall surface of the annular plate unit, the robot D18 transfers the annular plate unit to the annular plate unit positioning groove of the turntable E19 so that the subsequent processes can operate normally; and then when there is an annular plate unit in the annular plate unit positioning groove on the turntable D17, the robot D18 again transfers the annular plate unit on the turntable D17 to the rim barrel dressing device 9 for processing.

[0103] When the idle robot E20 detects that there is an annular plate unit in the annular plate unit positioning groove on the turntable E19, the robot E20 transfers the annular plate unit on the turntable E19 to the rim curling device 10 to perform curling processing on the rim flanging of the annular plate unit that has completed the cylinder body shaping, so that the flanged edge of the annular plate unit is curled and fixed to form the rim and flange structure after the second step in step S7 as described in the specification and the accompanying drawings of the patent document with the application number 202111230454.4; then the robot E20 takes out the annular plate unit that has completed the rim curling and performs transfer; during the transfer process, the camera 119 provided in the annular plate unit fixture of the robot E20 observes the quality of the outer circumferential side wall surface of the annular plate unit for one week. If there are defects on the outer circumferential side wall surface of the annular plate unit observed by the camera 119, the robot E20 transfers the annular plate unit to the defective product placement table E28 so that the operator can make a manual judgment on the annular plate unit judged as a defective product. If the operator determines that the surface defect of the annular plate unit is only oil stain or other impurities, or even a misjudgment by the camera 119, after wiping the surface of the annular plate unit clean and when there is no annular plate unit on the turntable F21, place the annular plate unit in the annular plate unit positioning groove of the turntable F21. If the operator determines that the annular plate unit actually has defects, the operator transfers the defective product to the defective product processing area for subsequent processing; when the camera 119 of the robot E20 observes that there are no defects on the outer circumferential side wall surface of the annular plate unit, the robot E20 transfers the annular plate unit to the annular plate unit positioning groove of the turntable F21 for normal operation of subsequent processes; then when there is an annular plate unit in the annular plate unit positioning groove on the turntable E19 again, the robot E20 transfers the annular plate unit on the turntable E19 to the rim curling device 10 for processing.

[0104] When the idle robot F22 detects that there is an annular plate unit in the annular plate unit positioning groove on the turntable F21, the robot F22 transfers the annular plate unit on the turntable F21 to the tire mounting surface shaping device 11, and processes the connection between the body part and the flared part of the annular plate unit after the cylinder shaping is completed to form a tire mounting surface, so that the annular plate unit forms the rim blank standard part structure after the last step in step S7 as described in the specification and the accompanying drawings of the patent document with the application number 202111230454.4; then the robot F22 takes out the annular plate unit that has completed the tire mounting surface shaping process and transfers it; during the transfer process, the camera 119 set on the annular plate unit fixture of the robot F22 observes the quality of the outer circumferential side wall surface of the annular plate unit for one week. If there are defects on the outer circumferential side wall surface of the annular plate unit observed by the camera 119, the robot F22 transfers the annular plate unit to the defective product placement table F29 so that the operator can make a manual judgment on the annular plate unit judged as a defective product. If the operator judges that the surface defect of the annular plate unit is only oil stain or other impurities, or even a misjudgment by the camera 119, after wiping the surface of the annular plate unit clean, when there is no annular plate unit on the turntable G23, the annular plate unit is placed in the annular plate unit positioning groove of the turntable G23. If the operator judges that the annular plate unit actually has defects, the operator transfers the defective product to the defective product treatment area for subsequent processing; when the camera 119 of the robot F22 observes that there are no defects on the outer circumferential side wall surface of the annular plate unit, the robot F22 transfers the annular plate unit to the annular plate unit positioning groove of the turntable G23 for normal operation of subsequent processes; then when there is an annular plate unit in the annular plate unit positioning groove on the turntable F21 again, the robot F22 transfers the annular plate unit on the turntable F21 to the tire mounting surface shaping device 11 for processing.

[0105] In the processes involving the above-mentioned robots, when each robot picks up the corresponding annular plate unit, the robot moves to the position of the corresponding annular unit plate according to the image captured by the camera 119, and keeps the annular plate unit fixture perpendicular to the axis of the corresponding annular plate unit, with the symmetric clamping plates 110 located on both sides of the annular plate unit, and the driving pinch roller 111 and the driven pinch roller 112 on the same clamping plate 110 are also symmetrically located on both sides of the axis of the annular plate unit; then the clamping plate driving device 114 drives the clamping plates 110 to move towards each other until the driving pinch roller 111 and the driven pinch roller 112 on the clamping plates 110 are both in contact with and clamp the outer side wall of the annular plate unit at the same time; at this time, due to the action of the self-gravity of the annular plate unit, the annular plate unit has a tendency to move downward relative to the pinch roller runner 127 and the pinch roller roll 126 of the driving pinch roller 111 and the driven pinch roller 112, and because the clamping plate 110 has a clamping force on the annular plate unit, the anti-slip convex rings 151 provided on the surface of the anti-slip cushion layer 141 of the pinch roller roll 126 are deformed due to the clamping force at the positions corresponding to the contact with the annular plate unit, thereby pressing the annular elastic pieces 152 at the corresponding positions to deform. Since the elastic coefficient of the annular elastic piece 152 is greater than that of the anti-slip convex ring 151, the annular elastic piece 152 exerts a sufficient relative force on the anti-slip convex ring 151 at the corresponding position, thereby providing a force to make the anti-slip convex ring 151 have a tendency to return to its original state, thus ensuring the anti-slip effect of the anti-slip convex ring 151. And because the anti-slip cushion layer 141 is connected to the cylindrical groove 140 through the annular corrugated structure 144, and the annular flanging 145 and the connecting sleeve 146 structures provided on the anti-slip cushion layer 141, the friction force generated by the anti-slip cushion layer 141 under the action of the gravity of the annular plate unit is prevented from moving downward relative to the cylindrical groove 140, further ensuring the fixing effect between the annular plate unit and the annular plate unit fixture after clamping.

[0106] And it is connected and fixed through the conical structure of the plug body 129 and the connecting sleeve 146, which further prevents the connecting sleeve 146 from separating from the notch of the cylindrical groove 140.

[0107] And when the camera 119 needs to observe the annular plate unit clamped by the annular plate unit fixture to determine whether it is a defective product, the pinch roller runner 127 is driven to rotate by the runner driving device 134, thereby driving the annular plate unit to rotate, so that the camera 119 can observe the entire outer side wall of the annular plate unit.

[0108] The support block 131 of the pinch roller roll limiting frame 130 is provided with a guiding groove 139 corresponding to the plug body 129, and the guiding groove 139 is matched and limited with the operating convex ring 153 of the plug body 129, thereby playing a role in laterally supporting the pinch roller roll 126 and ensuring the lateral supporting force of the pinch roller roll 126.

[0109] Since the pinch roll rotating roll 126 is clamped with the annular plate unit many times in the long term and needs to bear the relative downward movement trend of the annular plate unit, the anti-slip cushion layer 141 needs to be replaced after the pinch roll rotating roll 126 has been used for a long time. When replacing the anti-slip cushion layer 141, only need to screw the plug body 129 until it is separated from the central screw 143 in the cylindrical groove 140, then the anti-slip cushion layer 141 can be replaced. After replacement, screw the plug body 129 and the central screw 143 tightly again to fix them.

[0110] In the process of manufacturing a rim using a rim blank standard part, some rims need to be coaxially welded and fixed with two rim blank standard parts through an annular connecting strip due to special process requirements. The present application can also produce and process the connecting strip.

[0111] When it is necessary to produce an annular connecting strip, first place the connecting strip raw material along the length direction of the sheet material loading rack 33 of the sheet material sawing device 1, and then fix a sheet material limiting device on the side of the sawing table 30 facing away from the sheet material loading rack 33 according to the size of the rim blank standard part to be produced. The distance between the sheet material limiting device and the saw blade is equal to the circumference of the rim blank standard part to be produced; then move the connecting strip raw material towards the sawing table 30 until it is in limit contact with the sheet material limiting device; then the pneumatic piston cylinders 32 on the horizontal cross bar 21 drive the horizontal pressing strips to move downward respectively, so that the horizontal pressing strips press and fix the connecting strip raw materials on both sides of the saw blade respectively; finally, the saw blade starts and moves from one side of the sawing table 30 to the other side along the strip-shaped hole, and then saws off the connecting strip unit from the connecting strip raw material. Then the saw blade returns to the starting position, and the pneumatic piston cylinders 32 drive the horizontal pressing strips to move upward to the maximum stroke. At this time, the sawed-off connecting strip unit is transferred to the next process, and the connecting strip raw material repeats the above actions to continue cutting the connecting strip raw material.

[0112] The cut connecting bar unit is curled into an annular structure by the connecting bar unit curling device 2; during operation, according to the thickness of the connecting bar unit, the distance between the axis connection line of the curling guide pressure wheel A 45 and the curling guide base wheel 44 is adjusted to be equal to the thickness of the connecting bar unit by adjusting the handwheel 52; the distance between the axis connection line of the curling guide pressure wheel B 46 driven by the piston rod 55 when it extends out of the piston cylinder 54 and the curling guide base wheel 44 is adjusted by adjusting the adjusting nut 57 on the adjusting screw rod B 56, and the distance between the axis connection line of the curling guide pressure wheel B 46 driven by the piston rod 55 when it retracts into the piston cylinder 54 and the curling guide base wheel 44 is greater than or equal to the distance between the axis connection line of the curling guide pressure wheel A 45 and the curling guide base wheel 44; the curling guide base wheel 44 is driven by the base wheel driving device, one end of the connecting bar unit is inserted into the space between the curling guide base wheel 44 and the curling guide pressure wheel A 45 from one end far away from the curling guide pressure wheel B 46, and then it is conveyed under the action of the curling guide base wheel 44 until the end of the connecting bar unit passes through the curling guide base wheel 44 corresponding to the curling guide pressure wheel B 46 and contacts the curling guide pressure wheel B 46. When the connecting bar unit passes through the curling guide pressure wheel B 46 for a period of time, the piston cylinder 54 drives the piston rod 55 and the curling guide pressure wheel B 46 to move away from the piston cylinder 54, thereby driving the curling guide pressure wheel B 46 to bend the connecting bar unit around the corresponding curling guide base wheel 44. The bent connecting bar unit extends to the guide inclined plate 43 after bypassing the curling guide base wheel 44. Due to the action of the guide inclined plate 43, the curled connecting bar unit located on the guide inclined plate 43 will not contact the curling guide base wheel 44, the curling guide pressure wheel A 45 and the curling guide pressure wheel B 46, thus not affecting the continuous curling of the connecting bar unit.

[0113] The curled connecting bar unit is welded by the curling material welding device 4 to form an annular connecting bar unit, and the operation method is the same as that of the sheet material unit forming an annular unit sheet by welding through the curling material welding device 4 after the above-mentioned bending and flanging processing.

[0114] The welded annular connecting bar unit is then restored to a circular shape by the sheet material unit rolling device 5, and the operation method is the same as the circular restoration operation of the annular unit sheet; the connecting bar unit after the circular restoration operation can be used for the production of the rim.

Claims

1. Curled sheet metal unit welding device, characterized by: The invention comprises a base frame (58), wherein two opposite side walls of the base frame (58) are open to form a frame inner cavity (77), and the top of the base frame (58) comprises longitudinal horizontal push rods (59) arranged in parallel and symmetrically on both sides, and a longitudinal strip-shaped through hole (63) is formed between the longitudinal horizontal push rods (59), and the longitudinal horizontal push rods (59) are also provided with a weld scar removal device (60) and a welding device (62) driven by a longitudinal drive device A (65) to reciprocate along the longitudinal horizontal direction, and the weld scar removal device (60) and the welding device (62) are fixedly connected, and a milling cutter and a welding head are respectively provided at the bottom of the weld scar removal device (60) and the bottom of the welding device (62) at positions corresponding to the strip-shaped through hole (63), and the milling cutter is located in the strip-shaped through hole (63), and is rotated horizontally around a vertical axis by a milling cutter driving motor, and the milling cutter driving motor is movably connected to the weld scar removal device (60) through a milling cutter lifting device. The welding head is correspondingly located in the strip through hole (63), and is movably connected to the welding device (62) up and down through the welding head lifting device. The longitudinal driving device A (65) is fixedly connected to the base frame (58). The base frame (58) is also movably connected to a longitudinally arranged horizontal fixing plate (61). The horizontal fixing plate (61) is reciprocated horizontally relative to the base frame (58) through the transverse driving device A (69). The transverse driving device A (69) is fixedly connected to the base frame (58). When the horizontal fixing plate (61) moves horizontally to the maximum stroke on one side, the horizontal fixing plate (61) is located outside the base frame (58). When the horizontal fixing plate (61) moves horizontally to the maximum stroke on the other side, the horizontal fixing plate (61) is located directly below the strip through hole (63) and corresponds to the milling cutter and the welding head. The longitudinal movement range of the milling cutter and the welding head is greater than the longitudinal range of the horizontal fixing plate (61). The horizontal push rod (59) is rotatably connected to a longitudinal screw rod A (64) which is transmission-connected to a longitudinal drive device A (65); the weld scar removal device (60) and the welding device (62) are respectively provided with a nut pair A matching the longitudinal screw rod A (64); and the two ends of the horizontal push rod (59) corresponding to the longitudinal screw rod A (64) are rotatably connected to the longitudinal screw rod A (64) via a bearing seat A (66); The horizontal fixed plate (61) reciprocates along the horizontal horizontal frame (79) through the horizontal moving frame (68); the horizontal horizontal frame (79) is fixedly connected to the inner bottom of the base frame (58); the top surface of the horizontal horizontal frame (79) is rotatably connected to a horizontal screw rod A (80); both ends of the horizontal screw rod A (80) are rotatably connected to the horizontal horizontal frame (79) through bearing seats B (70); the bottom of the horizontal fixed plate (61) is fixedly connected to the horizontal moving frame (68); the horizontal moving frame (68) is provided with a nut pair B matching the horizontal screw rod A (80); the horizontal driving device A (69) is drivingly connected to one end of the horizontal screw rod A (80); The horizontal fixed plate (61) is fixedly connected to the top surface of the horizontal connecting cushion plate (67). The transverse moving frame (68) is fixedly connected to one end of the bottom of the horizontal connecting cushion plate (67). A support block (73) is fixed on the side wall of the base frame (58) inside and away from the transverse moving frame (68) of the horizontal connecting cushion plate (67). When the horizontal fixed plate (61) moves to the position of the longitudinal strip-shaped through hole (63), the support block (73) fits against the bottom surface of the horizontal connecting cushion plate (67) at the bottom of the horizontal fixed plate (61) at the position of the longitudinal strip-shaped through hole (63).

2. The coiled sheet unit welding device according to claim 1, wherein: The bottom of the horizontal connecting cushion plate (67) is fixedly connected with a longitudinal vertical rib (71). The longitudinal vertical rib (71) extends to be fixedly connected with the transverse moving frame (68) and extends downward to the bottom of the side wall of the transverse moving frame (68) facing the horizontal connecting cushion plate (67). The end face of the longitudinal vertical rib (71) away from the transverse moving frame (68) is an inclined surface that slopes upward along the direction away from the transverse moving frame (68). And the connection part of the longitudinal vertical rib (71) and the horizontal connecting cushion plate (67) is located on the side of the horizontal fixed plate (61) facing away from the transverse moving frame (68). On the bottom of the horizontal connecting cushion plate (67), a plurality of transverse vertical ribs are symmetrically fixed at equal intervals corresponding to both side end faces of the longitudinal vertical rib (71). The transverse vertical ribs are fixedly connected with the longitudinal vertical rib (71).

3. The curling sheet metal unit welding device according to claim 1, wherein: A cushion block (72) is fixedly provided on the bottom of the horizontal connecting cushion plate (67) corresponding to the support block (73).

4. The curling sheet unit welding device according to claim 1, characterized in that: On the bottom surface of the longitudinal horizontal ejector rod (59) and on both sides of the strip-shaped through hole (63), pressing plates (74) are respectively symmetrically provided. The pressing plates (74) are vertically movably connected with the longitudinal horizontal ejector rod (59) through a pressing plate lifting device (75). The pressing plates (74) correspond to the middle position of the horizontal fixed plate (61) longitudinally.

5. The curling sheet unit welding device according to claim 4, characterized in that: A plurality of pressing plates (74) are provided on one side of the strip-shaped through hole (63). The pressing plates (74) are evenly distributed within the range of the horizontal fixed plate (61) along the length direction of the strip-shaped through hole (63).

6. The curling sheet unit welding device according to claim 1, characterized in that: Locking clamp blocks (76) for fixing both ends of the material plate are respectively provided at both longitudinal ends of the top surface of the horizontal fixed plate (61).

7. The coiled sheet unit welding device according to claim 1, wherein: A strip-shaped marking groove is further provided on the top surface of the horizontal fixed plate (61). When the horizontal fixed plate (61) moves to the position of the strip-shaped through hole (63), the marking groove is located directly below the walking track of the welding head. The joint of both ends of the sheet metal unit fixedly connected to the horizontal fixed plate (61) corresponds to the marking groove. The length of the marking groove is greater than the welding length of the sheet metal unit.

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