Cylinder rolling laser welding equipment

Abstract

The present invention relates to the technical field of automated equipment for processing sheet materials into cylindrical shapes, specifically a cylindrical body rolling laser welding equipment, which includes a sheet positioning device, a rolling device, a welding device and a cylindrical ring removal device; the sheet positioning device is two sets of symmetrically arranged sheet positioning devices, each set of sheet positioning devices includes a conveying mechanism, an end positioning mechanism, and a lateral positioning clamping mechanism; the rolling device includes a guide rail and two rolling arms; the welding device includes a crossbeam, a welding clamping mechanism and a laser welding mechanism. The present invention adopts full-automatic rolling and laser welding, has high production efficiency, and has beautiful welds and high welding strength, which can effectively improve the quality of the inner drum of the washing machine.

Description

Technical Field

[0001] The invention relates to the technical field of automated equipment for processing sheet materials into cylindrical shapes, in particular to a cylindrical rolling laser welding device. Background Art

[0002] At present, the inner drum of washing machines in my country mainly rolls flat sheets with three-roller roll-ups. After the roll-ups are completed, the drum is manually moved to the next station for buckling or argon arc welding. Buckling is to overlap the joints of stainless steel sheets and bite each other. The pre-guide gap at the joint is uneven, which is very easy to wear clothes. Argon arc welding is to weld the joints of stainless steel sheets together in the form of argon arc welding. The temperature of argon arc welding is high, the weld discoloration is serious, and the weld area is large. Both buckling and argon arc welding have low strength, and there is a risk of drum explosion during high-speed spin drying.

[0003] Therefore, how to overcome the above-mentioned technical problems and defects becomes a key issue that needs to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a drum rolling laser welding equipment to solve the problems raised in the above-mentioned background technology. Compared with the prior art, the present invention adopts fully automatic rolling and laser welding, has high production efficiency, and has beautiful welds and high welding strength, which can effectively improve the quality of the inner drum of the washing machine.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a barrel rolling laser welding device, comprising a sheet positioning device, a rolling device, a welding device and a barrel ring removing device;

[0006] The sheet positioning device is composed of two sets arranged symmetrically, and each set of sheet positioning device includes a conveying mechanism, an end positioning mechanism, and a lateral positioning clamping mechanism; the end positioning mechanism includes an assembled and connected support arm and an end positioning plate; the lateral positioning clamping mechanism includes a lifting frame and a rotating frame arranged on the lifting frame, a first driving mechanism and a first telescopic component, the first lateral positioning plate is arranged on the rotating frame, the rotating frame is arranged under the sheet in contact, the first driving mechanism is used to drive the rotating frame to flip in an arc, the end of the first telescopic component is assembled and connected to the second lateral positioning plate, the first telescopic component drives the second lateral positioning plate to push the sheet toward the first lateral positioning plate and clamps and positions the sheet on both sides;

[0007] The rolling device includes a guide rail and two rolling arms. The two rolling arms move toward or away from each other along the X-axis on the guide rail through a second driving mechanism. Two sets of end positioning mechanisms are respectively assembled and connected with the two rolling arms. The lifting frame moves up and down along the Z-axis on the rolling arms through a third driving mechanism. The sheet is rolled into a circle and sent to the welding station under the combined action of the arc-shaped turning motion of the two sets of rotating frames, the movement of the two rolling arms toward each other, and the upward motion of the lifting frame.

[0008] The welding device includes a crossbeam, a welding clamping mechanism and a laser welding mechanism. The welding clamping mechanism is used to clamp and position the material head of the rolled sheet. The laser welding mechanism is slidably arranged on the crossbeam through a fourth driving mechanism to weld the material head.

[0009] Furthermore, the welding clamping mechanism includes a pressing assembly, a pad and an adjusting assembly, the pressing assembly includes an adapter plate, a pressure plate and a connecting column located between the adapter block and the pressure plate, the connecting column is slidably connected to the cross beam; an extension plate is arranged on one side of the adapter plate, and a rolling component is assembled in the extension plate through an axis; a pre-guide gap for the material head of the sheet to pass through is formed between the pressure plate and the pad, a spring is arranged at the upper end of the pressure plate, and the upper end of the spring is against the cross beam; the adjusting assembly includes a second telescopic component and a horizontal plate, the second telescopic component is used to drive the horizontal plate to slide along the Y-axis on the cross beam, a height adjustment pad is arranged on the upper end surface of the horizontal plate, and a plurality of bosses with height differences are arranged on the upper end surface of the height adjustment pad, when the second telescopic component drives the horizontal plate to move, the rolling component moves up and down due to the height difference between the height adjustment pad and the horizontal plate and the height difference between adjacent bosses, so as to dynamically adjust the pre-guide gap between the pressure plate and the pad.

[0010] Furthermore, the adjustment assembly also includes a cam and a limit pin. The cam is assembled on the cross beam through a shaft. A plurality of planar portions and a plurality of limit grooves are arranged on the outer edge of the cam. The distances between the plurality of planar portions and the central axis of the cam are different. A top block in contact with the planar portion is arranged at one end of the horizontal plate. The limit pin is installed on the cross beam through an assembly plate, and the limit pin matches the limit groove. When the top block contacts different planar portions, the minimum value of the pre-guide gap between the pressure plate and the pad is different.

[0011] Furthermore, the rolling component is a roller or a bearing.

[0012] Furthermore, the nozzle and the backing plate of the laser welding mechanism are provided with nitrogen blowing ducts, and the welding head of the laser welding mechanism is provided with a smoke suction duct.

[0013] Furthermore, the bobbin ring removing device moves up and down along the Z axis on the two rolling arms simultaneously through the fifth driving mechanism, and the bobbin ring removing device includes a third telescopic component, and a push plate is arranged at the end of the third telescopic component.

[0014] Furthermore, a weld detection mechanism is provided on the tube ring removing device.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The cylinder rolling laser welding equipment disclosed in the present invention integrates automatic sheet conveying, automatic positioning, automatic rolling, automatic welding, and automatic cylinder shifting, and can realize one-stop rolling and welding of sheet materials into cylinders, with high production efficiency.

[0017] (2) The cylindrical rounding laser welding equipment disclosed in the present invention has a nozzle and a pad of the laser welding mechanism provided with a nitrogen blowing duct to protect the weld from being oxidized and causing the weld to turn black during welding; a fume suction duct is provided on the welding head of the laser welding mechanism to effectively absorb welding fume and ensure welding quality.

[0018] (3) The barrel rolling laser welding equipment disclosed in the present invention needs to change the pre-guide gap of the welding clamping device due to the different thickness of the material sheet. The present invention adopts an adjustment component independently developed and designed to adjust the pre-guide gap between the pressure plate and the pad, so as to realize the rapid switching of different product processing procedures. The lateral positioning clamping mechanism automatically adjusts to adapt to different material widths through the first telescopic component, so that the same equipment can be used for the processing of the inner barrels of different models of washing machines, adapt to customized products, and effectively save the investment cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 for Figure 1 A partial enlarged view of

[0021] Figure 3 for Figure 1 Enlarged view of the center number A;

[0022] Figure 4 It is a structural schematic diagram of the pressing assembly of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the height adjustment pad of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the cam of the present invention.

[0025] Description of main component symbols:

[0026] 11- conveying mechanism, 12- arm, 13- end positioning plate, 14- lifting frame, 15- rotating frame, 16- first driving mechanism, 17- first lateral positioning plate, 18- sheet, 19- second lateral positioning plate, 21- guide rail, 22- rolling arm, 31- crossbeam, 311- weld detection mechanism, 32- pressing assembly, 321- adapter plate, 322- pressure plate, 323- connecting column, 324- extension plate, 325- rolling part, 326- spring, 33- pad, 34- adjusting assembly, 341- second telescopic part, 342- horizontal plate, 343- cam, 344- limiting pin, 345- height adjustment pad, 346- boss, 347- plane part, 348- limiting groove, 349- top block, 41- removing bracket, 42- support rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 The present invention provides a technical solution: a cylinder rolling laser welding device, including a sheet positioning device, a rolling device, a welding device and a cylinder ring removing device.

[0029] The sheet positioning device is composed of two sets arranged symmetrically, and each set of the sheet positioning device includes a conveying mechanism 11, an end positioning mechanism, and a lateral positioning clamping mechanism; the end positioning mechanism includes an assembled support arm 12 and an end positioning plate 13; the lateral positioning clamping mechanism includes a lifting frame 14 and a rotating frame 15 arranged on the lifting frame 14, a first driving mechanism 16 and a first telescopic component (not shown in the figure), a first lateral positioning plate 17 is arranged on the rotating frame 15, and the rotating frame 15 is arranged in contact with the sheet 18 below, and the first driving mechanism 16 is used to drive the rotating frame 15 to perform an arc-shaped flip. The first driving mechanism 16 of this embodiment adopts a servo motor, and the end of the first telescopic component is assembled and connected to the second lateral positioning plate 19. The first telescopic component of this embodiment adopts a servo electric cylinder, and the second lateral positioning plate 19 is fixed to the end of the piston rod of the servo electric cylinder. The first telescopic component drives the second lateral positioning plate 19 to push the sheet 18 toward the first lateral positioning plate 17 and clamps and positions the sheet 18 on both sides.

[0030] The rolling device includes a guide rail 21 and two rolling arms 22. The two rolling arms 22 move toward or away from each other along the X-axis on the guide rail 21 through a second driving mechanism. The second driving mechanism in this embodiment adopts a dual-output shaft motor. The transmission method between the second driving mechanism and the rolling arms is a screw drive. The support arms 12 in the two sets of end positioning mechanisms are respectively assembled and connected with the two rolling arms 22. The lifting frame 14 moves up and down along the Z-axis on the rolling arms 22 through a third driving mechanism. The third driving mechanism in this embodiment adopts a servo motor. The third driving mechanism drives the lifting frame 14 to slide along the rolling arms 22 through a screw drive assembly. The lifting frame 14 and the rolling arm 22 sliding assembly adopts a linear slide rail and a slider module in the prior art (not shown in the figure). The positioning frames in the two sets of lateral positioning and clamping mechanisms are respectively assembled and connected with the two lifting frames. The sheet 18 is rolled into a circle and sent to the welding station under the combined action of the arc-shaped flipping movement of the two sets of rotating frames 15, the movement of the two rolling arms 22 towards each other, and the rising movement of the lifting frame 14.

[0031] The welding device includes a crossbeam 31, a welding clamping mechanism and a laser welding mechanism. The welding clamping mechanism is used to clamp and position the head of the sheet after rolling. The welding clamping mechanism includes a pressing assembly, a pad 33 and an adjusting assembly. The pressing assembly includes an adapter plate 321, a pressing plate 322 and a connecting column 323 located between the adapter block 321 and the pressing plate 322. The connecting column 323 is slidably connected to the crossbeam 31 (not shown). When making it specifically, a perforated plate is welded on the inner side of the crossbeam 31, and the connecting column 323 passes through the perforated plate; the adapter plate 321 An extension plate 324 is provided on one side, and a rolling component 325 is assembled in the extension plate 324 through an axis. The rolling component 325 of this embodiment adopts a roller; a pre-guide gap is formed between the pressure plate 322 and the pad 33 for the material head of the sheet 18 to pass through, and a spring 326 is provided at the upper end of the pressure plate 322, and the upper end of the spring 326 is against the beam 31; the adjustment component 34 includes a second telescopic component 341, a horizontal plate 342, a cam 343 and a limit pin 344, and the second telescopic component 341 is used to drive the horizontal plate 342 to move along the upper edge of the beam 31 The Y-axis slides, and a height adjustment pad 345 is provided on the upper end surface of the horizontal plate 342. A plurality of bosses 346 with height differences are provided on the upper end surface of the height adjustment pad 345. When the second telescopic component 341 drives the horizontal plate 342 to move, the rolling component 325 moves up and down due to the height difference between the height adjustment pad 345 and the horizontal plate 342 and the height difference between adjacent bosses 346, so as to dynamically adjust the pre-guide gap between the pressing plate 322 and the pad 33. The cam 343 is assembled on the crossbeam 31 through the shaft. The cam 343 The outer edge of the cam is provided with three plane parts 347 and three limiting grooves 348, and the distances between the multiple plane parts 347 and the central axis of the cam are different. A top block 349 in contact with the plane part 347 is provided at one end of the horizontal plate 342; the limiting pin 344 is installed on the crossbeam 31 through the assembly plate, and the limiting pin 344 matches the limiting groove 348; when the top block 349 contacts different plane parts 347, the minimum value of the pre-guide gap between the pressing plate 322 and the pad 33 is different, thereby adapting to the rolling welding process of the sheet 18 of different thicknesses. The laser welding mechanism is slidably arranged on the crossbeam 31 through the fourth driving mechanism to weld the two material heads of the sheet. The fourth driving mechanism in this embodiment adopts a cylinder.

[0032] The tube ring removal device moves up and down along the Z axis on the two rolling arms at the same time through the fifth driving mechanism. The fourth driving mechanism in this embodiment adopts a motor, which drives the tube ring removal device to move up and down through the screw assembly. The tube ring removal device includes a removal bracket 41, a support rod 42 and a third telescopic component (not shown in the figure). A push plate (not shown in the figure) is arranged at the end of the third telescopic component. This is an existing one and is not shown in the figure. After the welding is completed, the cylinder is pushed onto the support rod 42 by the third telescopic component, and after being detected by the weld detection mechanism 43, the material is discharged.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Cylinder rolling laser welding equipment, characterized by: It includes a sheet positioning device, a rolling device, a welding device and a tube ring removing device; The sheet positioning device is composed of two sets arranged symmetrically, and each set of sheet positioning device includes a conveying mechanism, an end positioning mechanism, and a lateral positioning clamping mechanism; the end positioning mechanism includes an assembled and connected support arm and an end positioning plate; the lateral positioning clamping mechanism includes a lifting frame and a rotating frame arranged on the lifting frame, a first driving mechanism and a first telescopic component, the first lateral positioning plate is arranged on the rotating frame, the rotating frame is arranged under the sheet in contact, the first driving mechanism is used to drive the rotating frame to flip in an arc, the end of the first telescopic component is assembled and connected to the second lateral positioning plate, the first telescopic component drives the second lateral positioning plate to push the sheet toward the first lateral positioning plate and clamps and positions the sheet on both sides; The rolling device includes a guide rail and two rolling arms. The two rolling arms move toward or away from each other along the X-axis on the guide rail through a second driving mechanism. Two sets of end positioning mechanisms are respectively assembled and connected with the two rolling arms. The lifting frame moves up and down along the Z-axis on the rolling arms through a third driving mechanism. The sheet is rolled into a circle and sent to the welding station under the combined action of the arc-shaped turning motion of the two sets of rotating frames, the movement of the two rolling arms toward each other, and the upward motion of the lifting frame. The welding device includes a crossbeam, a welding clamping mechanism and a laser welding mechanism. The welding clamping mechanism is used to clamp and position the material head of the sheet after rolling. The laser welding mechanism is slidably arranged on the crossbeam through a fourth driving mechanism to weld the material head. The welding clamping mechanism includes a pressing assembly, a pad and an adjusting assembly. The pressing assembly includes an adapter plate, a pressure plate and a connecting column between the adapter block and the pressure plate, and the connecting column is slidably connected to the crossbeam. An extension plate is arranged on one side of the adapter plate, and a rolling component is assembled in the extension plate through an axis. A pre-guide gap is formed between the pressure plate and the pad for the material head of the sheet to pass through. A spring is arranged on the upper end of the pressure plate, and the upper end of the spring is against the crossbeam. The adjusting assembly includes a second telescopic component and a horizontal plate. The second telescopic component is used to drive the horizontal plate to slide along the Y-axis on the crossbeam. The upper end of the horizontal plate A height adjustment pad is arranged on the end face, and a plurality of bosses with height differences are arranged on the upper end face of the height adjustment pad. When the second telescopic component drives the horizontal plate to move, the rolling component moves up and down due to the height difference between the height adjustment pad and the horizontal plate and the height difference between adjacent bosses, so as to dynamically adjust the pre-guide gap between the pressure plate and the pad. The adjustment component also includes a cam and a limit pin. The cam is assembled on the cross beam through an axis. A plurality of plane parts and a plurality of limit grooves are arranged on the outer edge of the cam. The plurality of plane parts have different distances from the central axis of the cam. A top block in contact with the plane part is arranged at one end of the horizontal plate. The limit pin is installed on the cross beam through an assembly plate, and the limit pin matches the limit groove. When the top block contacts different plane parts, the minimum value of the pre-guide gap between the pressure plate and the pad is different.

2. The cylindrical body rolling laser welding equipment according to claim 1 is characterized in that: The rolling elements are rollers or bearings.

3. The cylindrical body rolling laser welding equipment according to claim 1 is characterized in that: The nozzle and the backing plate of the laser welding mechanism are provided with nitrogen blowing air ducts, and the welding head of the laser welding mechanism is provided with a smoke suction pipeline.

4. The cylindrical body rolling laser welding equipment according to claim 1 is characterized in that: The bobbin ring removing device moves up and down along the Z axis on the two rolling arms simultaneously through the fifth driving mechanism. The bobbin ring removing device comprises a third telescopic component, and a push plate is arranged at the end of the third telescopic component.

5. The cylindrical body rolling laser welding equipment according to claim 4 is characterized in that: A weld detection mechanism is provided on the cylinder ring removing device.

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