Hemming equipment for high-strength metal thin-wall part and machining method

Abstract

The hemming equipment for the high-strength metal thin-wall part comprises a rack, a two-way moving mechanism is arranged on the rear side of the rack, two moving plates are symmetrically arranged on the two-way moving mechanism, adjusting plates are fixedly connected to the bottom ends of the two moving plates, adjusting through grooves are formed in one ends of the two adjusting plates, and the adjusting through grooves are formed in the other ends of the two adjusting plates; one end of each adjusting plate is fixedly connected with a placing block, and a spring structure between a hemming rod and a multi-stage hemming wheel extension groove can provide dynamic elastic compensation in the extrusion process, so that the hemming pressure borne by a workpiece is uniform and controllable, the problem of non-uniform hemming caused by material thickness fluctuation or equipment vibration is effectively avoided, and the production efficiency is improved. Compared with the prior art, the device has the advantages that the distance between the lower conical hemming wheel and the multi-stage hemming wheel is controlled by adjusting the movement of the threaded sleeve, hemming processing is carried out according to metal workpieces of different sizes and thicknesses, and the hemming workpieces do not need to be manually replaced for equipment.

Description

Technical Field

[0001] The present invention relates to the field of metal hemming equipment, and particularly relates to a hemming equipment and processing method for high-strength metal thin-walled parts. Background Art

[0002] The strength and rigidity of the workpiece edge are crucial for the manufacturing of steel structures. During the manufacturing process, edge processing is required, mainly including hemming, cutting, and planing, etc. Hemming refers to curling the edge of the workpiece to increase its rigidity and strength; After retrieval, the utility model patent with the Chinese patent publication number CN218283339U discloses a hemming device for processing metal sheet products, which relates to the technical field of metal sheet product processing. The hemming device for processing metal sheet products includes a cross plate, an arc plate, and a hemming mechanism. A tension clamp is rotatably installed on the top of the cross plate, a motor and a housing are fixedly installed at the bottom of the cross plate, a connecting plate is fixedly installed on the top of the cross plate, a column is fixedly installed on the top of the connecting plate, the rotating shaft of the motor passes through the cross plate and is fixedly connected to the tension clamp, the number of arc plates is two groups and they are respectively arranged on the front and rear sides of the tension clamp, and the hemming mechanism is arranged on the column. The hemming mechanism can perform hemming processing on both ends of the metal sheet product at the same time; although this device realizes the lifting operation of the metal sheet product when it is tightened, when hemming the metal thin sheet, it is inconvenient to position metal thin sheets of different sizes and thicknesses, and it is difficult to adjust them to a suitable hemming use position, which affects the hemming processing efficiency of the metal thin sheet; After further retrieval, the invention patent with the Chinese patent publication number CN117046919A discloses a metal thin sheet hemming device, including support blocks. There are two support blocks. A plurality of conveying rollers are arranged on one side between the two support blocks. Both the front and rear ends of the conveying rollers are rotatably connected to the support blocks. A plurality of conveyor rollers are rotatably connected on the other side between the two support blocks. The front wall of the support block at the front end is installed with a first motor through a mounting seat. The front end of one of the conveying rollers and the front end of one of the conveyor rollers are sleeved with belt pulleys. The output shaft of the first motor is coaxially connected to one of the conveying rollers. The belt pulley on one side is frictionally driven by the belt pulley on the other side through a belt; this device realizes the positioning and conveying of metal thin-walled parts through screw transmission, but in actual use, the hemming gap of its hemming wheel is inconvenient to adjust, resulting in the need to replace both the conveying rollers on both sides and the hemming wheel at the same time during actual use to solve the problem of being unable to perform hemming processing on metal thin-walled parts of different thicknesses, greatly reducing its hemming processing efficiency for metal thin-walled parts of different thicknesses and sizes. Summary of the Invention

[0003] The purpose of the present invention is to provide a hemming equipment and processing method for high-strength metal thin-walled parts, so as to solve the problem in the prior art that it is inconvenient to adjust the equipment according to the thickness and size of the metal thin-walled parts.

[0004] To achieve this purpose, the present invention adopts the following technical solutions: A hemming device for high-strength metal thin-walled parts, comprising: a frame, a bidirectional moving mechanism is arranged at the rear side of the frame, and two moving plates are symmetrically arranged on the bidirectional moving mechanism. The bottom ends of the two moving plates are fixedly connected with adjusting plates. One ends of the two adjusting plates are respectively provided with adjusting through grooves. One ends of the two adjusting plates are fixedly connected with placing blocks. The top ends of the two placing blocks are respectively provided with rotating through holes. Rotating rods are rotatably connected inside the two rotating through holes. A hemming wheel clearance adjusting mechanism is fixedly installed between the inside of the adjusting through groove and the rotating rod. The hemming wheel clearance adjusting mechanism includes a fourth motor. One end of the fourth motor is fixedly connected with the bottom end of the placing block. The output end of the fourth motor is fixedly connected with an adjusting screw rod. The other end of the adjusting screw rod extends into the inside of the adjusting through groove and is rotatably connected with the top end inside the adjusting through groove. An adjusting nut sleeve is screwed on the outer wall of the adjusting screw rod. One end of the adjusting nut sleeve is fixed with a rotating plate. The bottom end of the rotating plate is rotatably connected with a lower conical hemming wheel. The top end of the rotating rod is fixedly connected with a multi-stage hemming wheel. The bottom end of the lower conical hemming wheel is fixedly connected with a hemming rod. An extending groove is opened at the top end of the multi-stage hemming wheel. A spring is installed between the bottom end of the hemming rod and the bottom end inside the extending groove.

[0005] Preferably, two pressing through grooves are opened at one ends of the two support plates. A rotating sleeve and a pressing slider are respectively slidably connected inside the two pressing through grooves. One end of the rotating sleeve is fixedly connected with a third motor. The output end of the third motor is fixedly connected with a conveying and pressing shaft. The outer wall of the conveying and pressing shaft is rotatably connected with the inside of the rotating sleeve. The other end of the conveying and pressing shaft is rotatably connected with one end of the pressing slider. One end of one of the support blocks is fixedly connected with a mounting member. The top end of the mounting member is fixedly connected with an electric telescopic rod. The bottom end of the electric telescopic rod extends to the bottom end of the mounting member and is fixedly connected with the top end of the pressing slider.

[0006] Preferably, the bidirectional moving mechanism includes a processing plate. Both ends of the processing plate are fixedly connected with support plates. An installation plate is fixedly connected between the top ends of the two support plates. A hydraulic rod is fixedly connected to the top end of the installation plate. The bottom end of the hydraulic rod extends to the bottom end of the installation plate and is fixedly connected with a sliding plate. An adjusting groove is opened at the bottom end of the sliding plate. A motor groove is opened at one end inside the adjusting groove. A first motor is fixedly connected to one end inside the motor groove. The output of the first motor is fixedly connected with a first bidirectional screw rod. The other end of the first bidirectional screw rod is rotatably connected with the other end inside the adjusting groove. Two moving nut sleeves are screwed on the outer wall of the bidirectional screw rod. The moving plates are correspondingly installed on the moving nut sleeves. A positioning groove is opened at the top end of the processing plate. A metal thin-walled part two-side conveying and positioning mechanism is fixedly installed inside the positioning groove.

[0007] Preferably, the conveying and positioning mechanism on both sides of the metal thin-walled part includes a fifth motor, one end of the fifth motor is fixedly connected to one end of one of the support plates, the output end of the fifth motor is fixedly connected to a second bidirectional screw, and the other end of the second bidirectional screw extends into the positioning groove and is rotatably connected to one end inside the positioning groove. Two positioning nuts are screwed on the outer wall of the second bidirectional screw. The tops of the two positioning nuts are fixedly connected with positioning frames, and positioning rollers are rotatably connected between the two ends inside the two positioning frames.

[0008] Preferably, one end of each of the two support plates is provided with a limit through groove, and limit sliders are slidably connected inside the two limit through grooves. One ends of the two limit sliders are respectively fixedly connected to both ends of the sliding plate.

[0009] Preferably, two moving sliders are fixedly connected to the bottom ends of the two positioning frames, and the bottom ends of the two moving sliders are respectively slidably connected to the top end of the processing plate.

[0010] Preferably, a support shaft is rotatably connected between the two support plates, and a support roller is fixedly connected to the outer wall of the support shaft.

[0011] Preferably, a processing groove is provided at the top end of the processing plate, and stable support feet are fixedly connected to the four corners of the bottom end of the processing plate.

[0012] Preferably, a second motor is fixedly connected to one end of one of the support plates, the output end of the second motor is fixedly connected to a conveying shaft, the other end of the conveying shaft extends to one side of the support plate and is rotatably connected to one end of the other support plate, and conveying rollers are fixedly installed on the outside of the conveying shaft.

[0013] A curling processing method for high-strength metal thin-walled parts uses the above-mentioned curling equipment for high-strength metal thin-walled parts, and includes the following steps: Step 1: Workpiece conveying, place the metal thin-walled part on the conveying rollers, start the second motor, drive the conveying shaft to drive the conveying rollers to rotate, and send the workpiece into the processing area between the two support plates; ‌Step 2: Centering and positioning of the workpiece‌‌, start the fifth motor, drive the second bidirectional screw to rotate, and through screw drive, make the two positioning nuts move synchronously towards or away from each other. The positioning nuts push the two positioning frames to move until the guiding rollers on the frames respectively contact both ends of the workpiece, ensuring that the axis of the workpiece coincides with the symmetric center of the support plate, and completing the lateral centering positioning; Step 3: Coarse adjustment and positioning of the hemming wheel. Start the hydraulic rod to push the sliding plate to move in the vertical direction. Preliminarily adjust the longitudinal height of the lower conical hemming wheel and the multi-stage hemming wheel to make them close to the end of the workpiece. Start the first motor to drive the first bidirectional screw to rotate, so that the moving screw sleeve drives the moving plate and the connected lower conical hemming wheel and multi-stage hemming wheel to move laterally toward each other until the two hemming wheels contact the two ends of the workpiece and apply pre-clamping force. Step 4: Synchronous curling processing. Start the third motor to drive the conveying lower pressure shaft to drive the conveying lower pressure roller to rotate, and cooperate with the conveying roller to clamp the workpiece. During the movement of the workpiece, its end is continuously squeezed by the lower conical curling wheel, the multi-stage curling wheel and the curling rod, forcing the curling wheel to rotate passively, and gradually completing the curling deformation processing.

[0014] Step 5: Dynamic compensation of conveying gap: according to the measured thickness of the workpiece, start the electric telescopic rod, drive the pressing slider to drive the conveying pressing shaft to rise and fall, and adjust the gap between the conveying pressing roller and the conveying roller by rotating the sleeve linkage; Step 6: Fine-tune the curling distance. Start the fourth motor to drive the adjusting screw to rotate, and control the distance between the conical curling wheel and the multi-stage curling wheel by moving the adjusting screw sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the fourth motor in the curling wheel gap adjustment mechanism drives the adjustment screw to rotate, driving the linkage of the adjustment screw sleeve and the rotating plate, thereby realizing automatic adjustment of the distance between the lower conical curling wheel and the multi-stage curling wheel, which can adapt to the processing requirements of metal thin-walled parts of different thicknesses, reduce manual replacement of curling wheels or conveying rollers, and significantly improve the processing efficiency of the equipment.

[0016] 2. In the present invention, the spring structure between the curling rod and the extended groove of the multi-stage curling wheel can provide dynamic elastic compensation during the extrusion process, ensuring that the curling pressure on the workpiece is uniform and controllable, effectively avoiding the problem of uneven curling caused by material thickness fluctuations or equipment vibrations, and improving the strength consistency of the edge of the finished product.

[0017] 3. In the present invention, the two-way moving mechanism is combined with the synergistic effect of the adjusting plate and the adjusting slot, so that the two moving plates can symmetrically adjust the position of the curling wheel gap adjusting mechanism, thereby covering the curling requirements of metal thin-walled parts of different sizes.

[0018] 4. In the present invention, the curling wheel gap adjustment mechanism integrating the fourth motor, the adjusting screw and the spring replaces the traditional multiple independent drive devices or the complex connecting rod structure. The adjustment action of the fourth motor can be linked with the conveying and positioning process of the metal thin-walled parts to realize the automation of the whole process from workpiece loading, positioning to curling processing, and reduce the manual intervention link. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0021] Figure 1 It is a front view structural schematic diagram of a curling device and processing method for high-strength metal thin-walled parts; Figure 2 It is a front view sectional structural schematic diagram of a curling device and processing method for high-strength metal thin-walled parts; Figure 3 It is a left view sectional structural schematic diagram of a curling device and processing method for high-strength metal thin-walled parts; Figure 4 It is a left view structural schematic diagram of a sliding block of a curling device and processing method for high-strength metal thin-walled parts; Figure 5 It is a left view sectional structural schematic diagram of a sliding block of a curling device and processing method for high-strength metal thin-walled parts; Figure 6 It is a left view structural schematic diagram of an adjusting screw and an adjusting nut sleeve of a curling device and processing method for high-strength metal thin-walled parts; Figure 7 It is a left view sectional schematic diagram of a processing plate of a curling device and processing method for high-strength metal thin-walled parts Figure 8 It is a left view structural schematic diagram of a conical curling wheel and a multi-stage curling wheel of a curling device and processing method for high-strength metal thin-walled parts Figure 9 It is a curling device and processing method for high-strength metal thin-walled parts Figure 1 The structural schematic diagram of the partial enlargement at A in Figure 10 It is a curling device and processing method for high-strength metal thin-walled parts Figure 3 The structural schematic diagram of the partial enlargement at B in Figure 11 It is a curling device and processing method for high-strength metal thin-walled parts Figure 5Schematic diagram of the partial enlarged structure at position C; Figure 12 Bead rolling equipment and processing method for high-strength metal thin-walled parts Figure 7 Schematic diagram of the partial enlarged structure at position D; Figure 13 Front view sectional structure diagrams of the lower conical bead rolling wheel and the multi-stage bead rolling wheel for the bead rolling equipment and processing method for high-strength metal thin-walled parts.

[0022] Illustration description: 1. Processing plate; 2. Support plate; 3. Installation plate; 4. Hydraulic rod; 5. Sliding plate; 6. First motor; 7. First bidirectional screw; 8. Moving nut; 9. Moving plate; 10. Adjusting plate; 11. Placing block; 12. Rotating rod; 13. Second motor; 14. Conveyor shaft; 15. Conveyor roller; 16. Rotating sleeve; 17. Lower pressing slider; 18. Third motor; 19. Conveyor lower pressing shaft; 20. Installation part; 21. Electric telescopic rod; 22. Fourth motor; 23. Adjusting screw; 24. Adjusting nut; 25. Lower conical bead rolling wheel; 26. Multi-stage bead rolling wheel; 27. Bead rolling rod; 28. Fifth motor; 29. Second bidirectional screw; 30. Positioning nut; 31. Positioning frame; 32. Positioning roller; 33. Limiting slider; 34. Moving slider; 35. Support shaft; 36. Support roller; 37. Stable support foot; 38. Rotating plate; 39. Spring; 40. Adjusting groove; 41. Motor groove; 42. Adjusting through groove; 43. Positioning groove. Detailed implementation manners

[0023] To make the invention objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present at the same time.

[0025] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0026] An embodiment of the present invention provides a hemming device for high-strength metal thin-walled parts, including a frame. A bidirectional moving mechanism is arranged at the rear side of the frame, and two moving plates 9 are symmetrically arranged on the bidirectional moving mechanism. The bottom ends of the two moving plates 9 are fixedly connected with adjusting plates 10. One ends of the two adjusting plates 10 are respectively provided with adjusting through grooves 42. One ends of the two adjusting plates 10 are fixedly connected with placing blocks 11. The top ends of the two placing blocks 11 are respectively provided with rotating through holes. Rotating rods 12 are rotatably connected inside the two rotating through holes. A hemming wheel gap adjusting mechanism is fixedly installed between the inside of the adjusting through groove 42 and the rotating rod 12; Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 11 , the hemming wheel gap adjusting mechanism includes a fourth motor 22. One end of the fourth motor 22 is fixedly connected with the bottom end of the placing block 11. The output end of the fourth motor 22 is fixedly connected with an adjusting screw rod 23. The other end of the adjusting screw rod 23 extends into the inside of the adjusting through groove 42 and is rotatably connected with the top end inside the adjusting through groove 42. An adjusting nut 24 is screwed on the outer wall of the adjusting screw rod 23. One end of the adjusting nut 24 is fixed with a rotating plate 38. The bottom end of the rotating plate 38 is rotatably connected with a lower conical hemming wheel 25. The top end of the rotating rod is fixedly connected with a multi-stage hemming wheel 26. A spring 39 is installed between the bottom end of the lower conical hemming wheel 25 and the bottom end inside the extension groove. After the fourth motor 22 is powered on and started, the output end of the fourth motor 22 will drive the adjusting screw rod 23 to rotate, and drive the adjusting nut 24 to move through the thread. Under the movement of the adjusting nut 24, the distance between the lower conical hemming wheel 25 and the multi-stage hemming wheel 26 is controlled, so as to achieve the effect of adjusting the gap between the lower conical hemming wheel 25 and the multi-stage hemming wheel 26 according to the thickness of the metal thin-walled part; Please refer to Figure 2 , Figure 6 and Figure 12, The bidirectional moving mechanism includes a processing plate 1. Both ends of the processing plate 1 are fixedly connected with support plates 2. A mounting plate 3 is fixedly connected between the tops of the two support plates 2. A hydraulic rod 4 is fixedly connected to the top of the mounting plate 3. The bottom end of the hydraulic rod 4 extends to the bottom of the mounting plate 3 and is fixedly connected with a sliding plate 5. An adjustment groove 40 is opened at the bottom of the sliding plate 5. One end inside the adjustment groove 40 is provided with a motor groove 41. A first motor 6 is fixedly connected to one end inside the motor groove 41. The output of the first motor 6 is fixedly connected with a first bidirectional screw 7. The other end of the first bidirectional screw 7 is rotatably connected to the other end inside the adjustment groove 40. Two moving nuts 8 are screwed on the outer wall of the bidirectional screw. A moving plate 9 is correspondingly installed on the moving nut 8. A positioning groove 43 is opened at the top of the processing plate 1. A conveying and positioning mechanism for both sides of the metal thin-walled part is fixedly installed inside the positioning groove 43. After the hydraulic rod 4 is started, it drives the sliding plate 5 to move in the vertical direction to adjust the initial height of the curling wheel assembly to adapt to the processing requirements of metal thin-walled parts with different thicknesses. The first motor 6 drives the first bidirectional screw 7 to rotate. Through screw transmission, the two moving nuts 8 move symmetrically along the adjustment groove 40, driving the moving plate 9 and the connected conveying and positioning mechanism to move horizontally closer or farther synchronously, realizing the precise centering and positioning of both sides of the metal thin-walled part; Among them, the conveying and positioning mechanism for both sides of the metal thin-walled part includes a fifth motor 28. One end of the fifth motor 28 is fixedly connected to one end of one of the support plates 2. The output end of the fifth motor 28 is fixedly connected with a second bidirectional screw 29. The other end of the second bidirectional screw 29 extends into the positioning groove 43 and is rotatably connected to one end inside the positioning groove 43. Two positioning nuts 30 are screwed on the outer wall of the second bidirectional screw 29. The tops of the two positioning nuts 30 are both fixedly connected with positioning frames 31. A positioning roller 32 is rotatably connected between the two ends inside the two positioning frames 31. After the fifth motor 28 is powered on and started, the output end of the fifth motor 28 will drive the second bidirectional screw 29 to rotate, and drive the positioning nut 30 to move through the thread. One end of the positioning nut 30 drives the two positioning frames 31 to move until the two guide rollers respectively contact both ends of the metal thin-walled part, making the distances between both ends of the metal thin-walled part and the two support plates 2 equal, thereby completing the conveying of the metal thin-walled part and the positioning control of its conveying direction, avoiding the metal thin-walled part from tilting during the conveying process, and further improving the efficiency of subsequent curling processing of the metal thin-walled part; Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10, one end of a support plate 2 is fixedly connected to a second motor 13, the output end of the second motor 13 is fixedly connected to a conveying shaft 14, the other end of the conveying shaft 14 extends to one side of the support plate 2 and is rotatably connected to one end of the other support plate 2, a conveying roller 15 is fixedly installed on the outer part of the conveying shaft 14, two pressing through grooves are formed at one end of the two support plates 2, a rotating sleeve 16 and a pressing slider 17 are respectively slidably connected inside the two pressing through grooves, one end of the rotating sleeve 16 is fixedly connected to a third motor 18, the output end of the third motor 18 is fixedly connected to a conveying and pressing shaft 19, the outer wall of the conveying and pressing shaft 19 is rotatably connected to the inside of the rotating sleeve 16, the other end of the conveying and pressing shaft 19 is rotatably connected to one end of the pressing slider 17, one end of one support block is fixedly connected to a mounting member 20, the top of the mounting member 20 is fixedly connected to an electric telescopic rod 21, the bottom end of the electric telescopic rod 21 extends to the bottom end of the mounting member 20 and is fixedly connected to the top of the pressing slider 17. After the third motor 18 is powered on and started, the output end of the third motor 18 drives the conveying and pressing shaft 19 to rotate, and drives the metal thin-walled part to be stably conveyed through the cooperation of the conveying and pressing roller and the conveying roller 15. The metal thin-walled part moves and drives the lower conical curling wheel 25 and the multi-stage curling wheel 26 to rotate through extrusion deformation, thereby completing the extrusion curling processing of both ends of the metal thin-walled part. By starting the electric telescopic rod 21, the position of the pressing slider 17 will be driven to move, and the distance between the conveying and pressing roller and the conveying roller 15 will be adjusted through the conveying and pressing shaft 19 and the rotating sleeve 16, so as to realize the regulation of the extrusion conveying gap according to the thickness of the metal thin-walled part; It should also be noted that one end of each of the two support plates 2 is provided with a limit through groove, and a limit slider 33 is slidably connected inside each of the two limit through grooves. One ends of the two limit sliders 33 are respectively fixedly connected to both ends of the sliding plate 5. When the hydraulic rod 4 drives the sliding plate 5 to move, the sliding plate 5 drives the position of the limit slider 33 to move. Through the sliding of the limit slider 33, the stability of the sliding plate 5 during movement is improved. Two moving sliders 34 are fixedly connected to the bottom end of each of the two positioning frames 31, and the bottom ends of the two moving sliders 34 are respectively slidably connected to the top end of the processing plate 1. When the positioning frame 31 moves, it will drive the moving slider 34 to move in a limited manner, and the positioning frame 31 further improves the stability during movement through the limit slider 33. A support shaft 35 is rotatably connected between the two support plates 2, and a support roller 36 is fixedly connected to the outer wall of the support shaft 35. When moving the metal thin-walled plate, through the rotation of the support shaft 35 and the support roller 36, the stability of the subsequent transmission of the metal thin-walled plate is improved. A silicone protective layer is fixedly connected to the outer wall of each of the plurality of conveying rollers 15, which improves the protective effect during conveying when contacting the metal thin-walled plate. A processing groove is provided at the top end of the processing plate 1, and stable support feet 37 are fixedly connected to the four corners at the bottom end of the processing plate 1 to support the position of the overall device and increase the height of the overall device position.

[0027] The embodiment of the present invention also provides a curling processing method for high-strength metal thin-walled parts, which uses the above-mentioned curling equipment for high-strength metal thin-walled parts, and includes the following steps: Step 1: Workpiece conveying, place the metal thin-walled part on the conveying roller 15, start the second motor 13, drive the conveying shaft 14 to drive the conveying roller 15 to rotate, and send the workpiece into the processing area between the two support plates 2; ‌Step 2: Workpiece centering and positioning‌‌, start the fifth motor 28, drive the second bidirectional screw 29 to rotate, and through screw transmission, make the two positioning nuts 30 move synchronously towards or away from each other. The positioning nut 30 pushes the two positioning frames 31 to move until the guide rollers on the frames respectively contact both ends of the workpiece, ensuring that the axis of the workpiece coincides with the symmetry center of the support plate 2, and completing the horizontal centering and positioning; ‌Step 3: Coarse adjustment and positioning of the curling wheel‌, start the hydraulic rod 4, push the sliding plate 5 to move in the vertical direction, initially adjust the longitudinal height of the lower conical curling wheel 25 and the multi-stage curling wheel 26, make it close to the end of the workpiece, start the first motor 6, drive the first bidirectional screw 7 to rotate, make the moving nut 8 drive the moving plate 9 and the connected lower conical curling wheel 25 and multi-stage curling wheel 26 to move horizontally towards each other until the two curling wheels contact both ends of the workpiece and apply a pre-clamping force; Step 4: Synchronous curling processing, start the third motor 18, drive the conveying lower pressure shaft 19 to drive the conveying lower pressure roller to rotate, and cooperate with the conveying roller 15 to clamp the workpiece. During the movement of the workpiece, its end is continuously squeezed by the lower conical curling wheel 25, the multi-stage curling wheel 26 and the curling rod 27, forcing the curling wheel to rotate passively, and gradually completing the curling deformation processing.

[0028] Step 5: Dynamic compensation of conveying gap: according to the measured thickness of the workpiece, the electric telescopic rod 21 is started to drive the pressing slider 17 to drive the conveying pressing shaft 19 to move up and down, and the gap between the conveying pressing roller and the conveying roller 15 is adjusted by the rotating sleeve 16; Step 6: Fine-tune the curling distance. Start the fourth motor 22 to drive the adjusting screw 23 to rotate, and control the distance between the lower conical curling wheel 25 and the multi-stage curling wheel 26 by moving the adjusting screw sleeve 24.

[0029] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hemming device for high-strength metal thin-walled parts, characterized in that, Comprising: A frame, a bidirectional moving mechanism is arranged at the rear side of the frame, and two moving plates (9) are symmetrically arranged on the bidirectional moving mechanism. The bottom ends of the two moving plates (9) are fixedly connected with adjusting plates (10). One end of each of the two adjusting plates (10) is provided with an adjusting through groove (42). One end of each of the two adjusting plates (10) is fixedly connected with a placing block (11). The top ends of the two placing blocks (11) are both provided with rotating through holes. A rotating rod (12) is rotatably connected inside each of the two rotating through holes. A curling wheel gap adjusting mechanism is fixedly installed between the inside of the adjusting through groove (42) and the rotating rod (12). The curling wheel gap adjusting mechanism includes a fourth motor (22). One end of the fourth motor (22) is fixedly connected with the bottom end of the placing block (11). The output end of the fourth motor (22) is fixedly connected with an adjusting screw rod (23). The other end of the adjusting screw rod (23) extends into the inside of the adjusting through groove (42) and is rotatably connected with the top end inside the adjusting through groove (42). An adjusting nut sleeve (24) is screwed on the outer wall of the adjusting screw rod (23). One end of the adjusting nut sleeve (24) is fixed with a rotating plate (38). The bottom end of the rotating plate (38) is rotatably connected with a lower conical curling wheel (25). The top end of the rotating rod is fixedly connected with a multi-stage curling wheel (26). The bottom end of the lower conical curling wheel (25) is fixedly connected with a curling rod (27). An extending groove is provided at the top end of the multi-stage curling wheel (26). A spring (39) is installed between the bottom end of the curling rod and the bottom end inside the extending groove.

2. The hemming device for high-strength metal thin-walled parts according to claim 1, characterized in that, One end of each of the two support plates (2) is provided with two downward pressing through grooves. A rotating sleeve (16) and a downward pressing slider (17) are respectively slidably connected inside the two downward pressing through grooves. One end of the rotating sleeve (16) is fixedly connected with a third motor (18). The output end of the third motor (18) is fixedly connected with a conveying and downward pressing shaft (19). The outer wall of the conveying and downward pressing shaft (19) is rotatably connected with the inside of the rotating sleeve (16). The other end of the conveying and downward pressing shaft (19) is rotatably connected with one end of the downward pressing slider (17). One end of one of the support blocks is fixedly connected with a mounting member (20). The top end of the mounting member (20) is fixedly connected with an electric telescopic rod (21). The bottom end of the electric telescopic rod (21) extends to the bottom end of the mounting member (20) and is fixedly connected with the top end of the downward pressing slider (17).

3. The hemming device for a high-strength metal thin-walled part according to claim 2, characterized in that, The bidirectional moving mechanism includes a processing plate (1). Both ends of the processing plate (1) are fixedly connected with support plates (2). Between the tops of the two support plates (2), there is a fixedly connected mounting plate (3). The top of the mounting plate (3) is fixedly connected with a hydraulic rod (4). The bottom end of the hydraulic rod (4) extends to the bottom of the mounting plate (3) and is fixedly connected with a sliding plate (5). An adjustment groove (40) is opened at the bottom end of the sliding plate (5). At one end inside the adjustment groove (40), a motor groove (41) is opened. At one end inside the motor groove (41), a first motor (6) is fixedly connected. The output of the first motor (6) is fixedly connected with a first bidirectional screw rod (7). The other end of the first bidirectional screw rod (7) is rotatably connected with the other end inside the adjustment groove (40). Two moving nuts (8) are screwed on the outer wall of the bidirectional screw rod. The moving plate (9) is correspondingly mounted on the moving nut (8). A positioning groove (43) is opened at the top of the processing plate (1). Inside the positioning groove (43), a positioning mechanism for conveying and positioning both sides of the metal thin-walled part is fixedly installed.

4. The hemming device for high-strength metal thin-walled parts according to claim 3, characterized in that, The positioning mechanism for conveying and positioning both sides of the metal thin-walled part includes a fifth motor (28). One end of the fifth motor (28) is fixedly connected with one end of one of the support plates (2). The output end of the fifth motor (28) is fixedly connected with a second bidirectional screw rod (29). The other end of the second bidirectional screw rod (29) extends into the positioning groove (43) and is rotatably connected with one end inside the positioning groove (43). Two positioning nuts (30) are screwed on the outer wall of the second bidirectional screw rod (29). The tops of the two positioning nuts (30) are fixedly connected with positioning frames (31). Between the two ends inside the two positioning frames (31), positioning rollers (32) are rotatably connected.

5. The hemming device for high-strength metal thin-walled parts according to claim 4, characterized in that, At one end of each of the two support plates (2), a limit through groove is opened. Inside each of the two limit through grooves, a limit slider (33) is slidably connected. One end of each of the two limit sliders (33) is fixedly connected with both ends of the sliding plate (5).

6. The hemming device for a high-strength metal thin-walled part according to claim 5, characterized in that, At the bottom end of each of the two positioning frames (31), two moving sliders (34) are fixedly connected. The bottom ends of the two moving sliders (34) are respectively slidably connected with the top of the processing plate (1).

7. The hemming device for a high-strength metal thin-walled part according to claim 6, wherein A support shaft (35) is rotatably connected between the two support plates (2). A support roller (36) is fixedly connected to the outer wall of the support shaft (35).

8. The hemming device for a high-strength metal thin-walled part according to claim 7, characterized in that, A processing groove is opened at the top of the processing plate (1). At the four corners of the bottom of the processing plate (1), stabilizing feet (37) are fixedly connected.

9. The hemming device for a high-strength metal thin-walled part according to claim 8, characterized in that, One end of one of the support plates (2) is fixedly connected with a second motor (13). The output end of the second motor (13) is fixedly connected with a conveying shaft (14). The other end of the conveying shaft (14) extends to one side of the support plate (2) and is rotatably connected with one end of the other support plate (2). A conveying roller (15) is fixedly installed on the outside of the conveying shaft (14).

10. A curling processing method for high-strength metal thin-walled parts, characterized in that, Using a curling device for high-strength metal thin-walled parts according to any one of claims 1-9, includes the following steps: Step 1: conveying the workpiece, placing the thin-walled metal workpiece on the conveying roller (15), starting the second motor (13), driving the conveying shaft (14) to drive the conveying roller (15) to rotate, and conveying the workpiece into the processing area between the two support plates (2); Step 2: Centering the workpiece, start the fifth motor (28) to drive the second bidirectional screw (29) to rotate, and through the screw transmission, the positioning screw sleeves (30) on both sides move synchronously towards or away from each other, and the positioning screw sleeves (30) push the two positioning frames (31) to move until the guide rollers on the frames contact the two ends of the workpiece respectively, ensuring that the axis of the workpiece coincides with the symmetry center of the support plate (2), thereby completing the horizontal centering positioning; Step 3: Coarse adjustment of the hemming wheel positioning, start the hydraulic rod (4), push the sliding plate (5) to move in the vertical direction, preliminarily adjust the longitudinal height of the lower conical hemming wheel (25) and the multi-stage hemming wheel (26) so that they are close to the end of the workpiece, start the first motor (6), drive the first bidirectional screw (7) to rotate, so that the movable screw sleeve (8) drives the movable plate (9) and the connected lower conical hemming wheel (25) and the multi-stage hemming wheel (26) to move laterally toward each other until the two hemming wheels contact the two ends of the workpiece and apply a pre-clamping force; Step 4: Synchronous curling processing, start the third motor (18), drive the conveying lower pressure shaft (19) to drive the conveying lower pressure roller to rotate, and cooperate with the conveying roller (15) to clamp the workpiece. During the movement of the workpiece, its end is continuously squeezed by the lower conical curling wheel (25), the multi-stage curling wheel (26) and the curling rod (27), forcing the curling wheel to rotate passively, thereby gradually completing the curling deformation processing. Step 5: Dynamic compensation of the conveying gap. According to the measured thickness of the workpiece, the electric telescopic rod (21) is started to drive the pressing slider (17) to drive the conveying pressing shaft (19) to move up and down, and the gap between the conveying pressing roller and the conveying roller (15) is adjusted by the rotating sleeve (16); Step 6: Fine adjustment of the curling distance. Start the fourth motor (22) to drive the adjusting screw (23) to rotate, and control the distance between the conical curling wheel (25) and the multi-stage curling wheel (26) by moving the adjusting screw sleeve (24).

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