Sheet metal part machining device and method

Abstract

The invention discloses a sheet metal part machining device and method, and particularly relates to the technical field of sheet metal part machining. The sheet metal part machining device comprises a base, a first support is fixedly installed at the top end of the base, an air cylinder frame is fixedly installed at the top of the first support, and a plurality of evenly-distributed lifting air cylinders are fixedly installed on the air cylinder frame; a plurality of lifting air cylinders are arranged on the base, a jacking and pressing mechanism is fixedly installed at the driving ends of the multiple lifting air cylinders, a bending mechanism is arranged below the jacking and pressing mechanism and fixedly installed at the top end of the base, and machining mechanisms are arranged at the four corners of the bending mechanism correspondingly. The to-be-machined metal sheet part for industrial switch shell machining can be pressed and positioned, the metal sheet part can be automatically subjected to primary outer folding and secondary inner folding, and the folding machining efficiency of the metal sheet part is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal sheet metal processing, and in particular to a metal sheet metal processing device and method. Background Art

[0002] Sheet metal parts are parts made of metal plates (such as steel, aluminum, copper, stainless steel, etc.) through cutting, bending, stamping, welding and other processes. They are widely used in the production of equipment housings, structural frames and various mechanical parts. Among them, when industrial switches are produced and processed, sheet metal parts need to be cut, bent, stamped, welded and other processes to make the housing; When bending the casing of a traditional industrial switch, a special bending machine is mostly used for manual bending. The metal sheet metal parts need to be manually held and placed on the bending parts of the bending machine for multiple bending. After the bending process, they need to be transported to the next stamping station for mechanical stamping. After the stamping is completed, they are transported to the welding station for welding. The overall processing process is relatively complicated and the efficiency is slow. Therefore, we propose a metal sheet metal processing device and method to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a metal sheet processing device and method to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a metal sheet metal processing device, comprising a base, a first bracket is fixedly installed on the top of the base, a cylinder frame is fixedly installed on the top of the first bracket, a plurality of evenly distributed lifting cylinders are fixedly installed on the cylinder frame, a plurality of lifting cylinders are fixedly installed on the driving ends of the plurality of lifting cylinders, a bending mechanism is provided below the pressing mechanism, the bending mechanism is fixedly installed on the top of the base, and processing mechanisms are provided at the four corners of the bending mechanism.

[0005] As a preferred technical solution of the present invention, the top pressing mechanism includes a mechanism top frame, which is fixedly installed on the driving ends of multiple lifting cylinders, an adjusting outer cylinder is fixedly installed in the middle of the bottom end of the mechanism top frame, and the bottom sliding card of the adjusting outer cylinder is provided with two symmetrically distributed first adjusting slides and two symmetrically distributed second adjusting slides, the two first adjusting slides and the two second adjusting slides are distributed in a ring array, a driving disk is rotatably installed on the top of the inner side of the adjusting outer cylinder, a driving longitudinal axis is fixedly installed in the middle of the driving disk, and the driving longitudinal axis is rotatably installed in the middle of the adjusting outer cylinder, a plane threaded protrusion is integrally formed on the lower surface of the driving disk, and a plane threaded groove used in conjunction with the plane threaded protrusion is opened on the upper surfaces of the two first adjusting slides and the two second adjusting slides, the plane The threaded protrusion is movably clamped in the plane threaded groove, and the first frame is fixedly installed on the end of the first adjusting slide away from the adjusting outer cylinder, and the first pressure frame is fixedly installed on the end of the first frame away from the first adjusting slide, and two symmetrically distributed first telescopic cylinders are fixedly installed in the first pressure frame, and the driving end of the first telescopic cylinder extends out of the end of the first pressure frame and is fixedly installed with a first end pressure block, and the second frame is fixedly installed on the end of the second adjusting slide, and the second pressure frame is fixedly installed on the end of the second adjusting slide, and two symmetrically distributed second telescopic cylinders are fixedly installed in the second pressure frame, and the driving end of the second telescopic cylinder extends out of the end of the second pressure frame and is fixedly installed with a second end pressure block, and the opposite ends of the first end pressure block and the second end pressure block are in contact with each other.

[0006] As a preferred technical solution of the present invention, auxiliary seats are vertically installed at both ends of the first pressing frame and the second pressing frame, and guide slide shafts are vertically installed at the ends of the auxiliary seats. Guide slide grooves corresponding to the guide slide shafts are opened at the ends of the mechanism top frame, and the guide slide shafts are slidably engaged in the corresponding guide slide grooves. A limiting bottom ring is fixedly installed in the middle of the guide slide shaft, and the upper surface of the limiting bottom ring contacts the lower surface of the mechanism top frame. A limiting top ring is fixedly installed on the top of the guide slide shaft, and the lower surface of the limiting top ring contacts the upper surface of the mechanism top frame.

[0007] As a preferred technical solution of the present invention, a first motor is fixedly mounted at the middle of the top end of the adjusting outer cylinder, and a driving end of the first motor is fixedly mounted to the top end of the driving longitudinal shaft.

[0008] As a preferred technical solution of the present invention, the bending mechanism includes a plurality of evenly distributed second brackets, the second brackets are fixedly mounted on the top of the base, a bottom base plate is fixedly mounted on the top of the plurality of second brackets, positioning angles are fixedly mounted at the four corners of the top of the bottom base plate, an outer folding groove and an inner folding groove are opened on the bottom base plate, the outer folding groove is located outside the inner folding groove, and an active card in the outer folding groove is provided with two symmetrically distributed first outer folding plates and two symmetrically distributed second outer folding plates, the first outer folding plate and the second outer folding plate are vertically distributed, and an active card in the inner folding groove is provided with two symmetrically distributed first inner folding plates and two symmetrically distributed second inner folding plates, the first inner folding plate and the second inner folding plate are vertically distributed, and both ends of the outer walls of the first outer folding plate, the second outer folding plate, the first inner folding plate and the second inner folding plate are fixedly mounted with stabilizing seats, and the ends of the stabilizing seats are movably inserted with stabilizing longitudinal columns, the stabilizing longitudinal columns are fixedly mounted on the bottom end of the bottom base plate, and a spring is provided at the top of the stabilizing seat, and the spring is movably sleeved on the outer side of the stabilizing longitudinal column.

[0009] As a preferred technical solution of the present invention, the opposite ends of the adjacent first outer folding plate and the second outer folding plate are each provided with a first right-angle frame, the first right-angle frame is fixedly mounted on the bottom end of the bottom substrate, and the bottom of the first right-angle frame is rotatably mounted with two first cams distributed vertically, the outer sides of the first cams are respectively in contact with the lower surfaces of the first outer folding plate and the second outer folding plate, the shaft ends of the two first cams are each fixedly mounted with first conical teeth, and the two adjacent first conical teeth are meshed and connected, and the first cam shaft ends at both ends of the first outer folding plate are each provided with a first pulley transmission group, the first pulley transmission group includes two first pulleys and a first belt movably sleeved on the outer sides of the two first pulleys, and the two first pulleys are respectively fixedly mounted on the shaft ends of the corresponding first cams, and the first cam shaft ends at both ends of the second outer folding plate are each provided with a second pulley transmission group, the second pulley transmission group includes two second pulleys and a second belt movably sleeved on the outer sides of the two second pulleys, and the two second pulleys are respectively fixedly mounted on the shaft ends of the corresponding first cams, and a second motor is provided at one of the first right-angle frame positions, and the driving end of the second motor is fixedly mounted with second conical teeth, and the second conical teeth are meshed and connected with the corresponding first conical teeth.

[0010] As a preferred technical solution of the present invention, the opposite ends of the adjacent first inner folding plate and the second inner folding plate are each provided with a second right-angle frame, the second right-angle frame is fixedly installed at the bottom end of the bottom base plate, and the bottom of the second right-angle frame is rotatably installed with two second cams distributed vertically, the outer sides of the second cams are respectively in contact with the lower surfaces of the first inner folding plate and the second inner folding plate, and the shaft ends of the two second cams are fixedly installed with third conical teeth, and the two adjacent third conical teeth are meshed and connected, and the second cam shaft ends at both ends of the first inner folding plate are each provided with a third pulley transmission group, and the third pulley transmission group includes two third belts A pulley and a third belt movably connected to the outside of the two third pulleys, the two third pulleys are respectively fixedly mounted on the shaft ends of the corresponding second cams, the second cam shaft ends at both ends of the second inner folding plate are provided with a fourth pulley transmission group, the fourth pulley transmission group includes two fourth pulleys and a fourth belt movably connected to the outside of the two fourth pulleys, the two fourth pulleys are respectively fixedly mounted on the shaft ends of the corresponding second cams, a third motor is provided at one of the second right-angle frames, and a fourth conical tooth is fixedly mounted on the driving end of the third motor, and the fourth conical tooth is meshingly connected with the corresponding third conical tooth.

[0011] As a preferred technical solution of the present invention, the processing mechanism includes a linear electric rail, which is fixedly installed on the outside of the corresponding positioning angle, a horizontal bracket is vertically installed on the driving end of the linear electric rail, a telescopic rod is fixedly installed on the top of the horizontal bracket, a processing longitudinal frame is fixedly installed on the driving end of the telescopic rod, a welding head is fixedly installed on the bottom of the processing longitudinal frame, a third right-angle frame is fixedly installed in the middle of the processing longitudinal frame, two vertically distributed grinding discs are rotatably installed in the middle of the third right-angle frame, the axial ends of the grinding discs are fixedly installed with fifth conical teeth, the fifth conical teeth are meshingly connected, and a fourth motor is fixedly installed on the outside of the third right-angle frame, and the driving end of the fourth motor and the axial end of one of the grinding discs are fixedly installed.

[0012] As a preferred technical solution of the present invention, sunken through grooves corresponding to the welding heads are provided at the four corners of the inner folding groove.

[0013] A method for using a metal sheet metal processing device comprises the following steps: Step 1: clamp the metal sheet metal for processing the industrial switch casing to be processed in the positioning angle for positioning. At this time, the outer folding part of the metal sheet metal corresponds to the outer folding groove, and the inner folding part of the metal sheet metal corresponds to the inner folding groove; Subsequently, the first motor is controlled to be turned on to drive the longitudinal axis to rotate, thereby driving the driving disk to rotate, cooperating with the plane thread convex to be movably engaged in the plane thread groove, driving the two first adjusting slides and the two second adjusting slides to synchronously slide backwards, and then controlling the first pressing frames on both sides and the second pressing frames on both sides to move backwards synchronously, so that the first pressing frames on both sides and the second pressing frames on both sides correspond to the outer folding grooves, subsequently, the first telescopic cylinders on both sides are controlled to be turned on to drive the first end pressing blocks on both sides to slide backwards, and the second telescopic cylinders on both sides are controlled to be turned on to drive the second end pressing blocks on both sides to slide backwards, so that the contact positions of the first end pressing blocks and the second end pressing blocks correspond to the positions of the corners of the outer folding parts of the metal sheet metal parts; Subsequently, the plurality of lifting cylinders are controlled to be turned on to drive the pressing mechanism to lift and lower, so that the pressing mechanism presses the metal sheet metal part. Subsequently, the second motor is controlled to be turned on to drive the second conical teeth to drive the corresponding first conical teeth to rotate, and the meshing connection of the adjacent first conical teeth and the transmission of the first pulley transmission group and the second pulley transmission group are coordinated to synchronously drive the plurality of first cams to rotate, thereby controlling the first outer folding plate and the second outer folding plate to move upward in the outer folding groove, and automatically folding the four sides of the pressed metal sheet metal part once. Step 2, after folding outward, move the entire top pressing mechanism upward, and then, control the first telescopic cylinders on both sides to drive the first end pressing blocks on both sides to slide toward each other, control the second telescopic cylinders on both sides to drive the second end pressing blocks on both sides to slide toward each other, and control the first motor to control the driving longitudinal axis to rotate in the opposite direction, thereby driving the driving plate to rotate in the opposite direction, and cooperate with the plane thread convex to be movably engaged in the plane thread groove, drive the two first adjusting slides and the two second adjusting slides to slide toward each other synchronously, and then control the first pressing frames on both sides and the second pressing frames on both sides to move toward each other synchronously, so that the first pressing frames on both sides and the second pressing frames on both sides correspond to the inner folding groove, and make the contact positions of the first end pressing blocks and the second end pressing blocks correspond to the positions of the corners of the inner folding part of the metal sheet metal; Subsequently, the entire pressing mechanism is moved downward to press the metal sheet metal part again, and then the third motor is controlled to start to drive the fourth conical tooth to drive the corresponding third conical tooth to rotate, and the meshing connection of the adjacent third conical teeth and the transmission of the third pulley transmission group and the fourth pulley transmission group are coordinated to synchronously drive the plurality of second cams to rotate, thereby controlling the first inner folding plate and the second inner folding plate to move upward in the inner folding groove, and automatically performing a second inner folding on the four sides of the pressed metal sheet metal part; Step 3: After the second folding, the metal sheet metal forms the industrial switch housing. Then, the telescopic rod is controlled to drive the processing vertical frame and the welding head to move horizontally, and the linear electric rail is controlled to drive the welding head to move vertically. The welding head is moved to the edge welding position of the metal sheet metal, and the welding head is used to automatically weld it. After welding is completed, the telescopic rod and the linear electric rail are controlled to drive the two grinding discs to move horizontally and vertically, and the two grinding discs are moved to the welding position of the edge of the metal sheet metal. The fourth motor is controlled to start, and the meshing connection of the fifth conical teeth is coordinated to drive the two grinding discs to rotate synchronously to automatically grind the welding position; Step 4: After the metal sheet metal is folded, welded and polished, the first telescopic cylinders on both sides are controlled to open again to drive the first end pressure blocks on both sides to slide toward each other, the second telescopic cylinders on both sides are controlled to open to drive the second end pressure blocks on both sides to slide toward each other, and the first motor is controlled to control the driving longitudinal axis to rotate in the opposite direction, thereby driving the driving disk to rotate in the opposite direction, and the plane thread convex is movably engaged in the plane thread groove to drive the two first adjusting slides and the two second adjusting slides to slide toward each other synchronously, thereby controlling the first pressure frames on both sides and the second pressure frames on both sides to move toward each other synchronously, and moving the entire top pressing mechanism upward to disengage.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a pressing mechanism and using a bending mechanism, the metal sheet metal parts for industrial switch casing processing to be processed can be pressed and positioned, and the metal sheet metal parts can be automatically folded outward once and folded inward twice, thereby improving the folding processing efficiency of the metal sheet metal parts.

[0015] 2. By setting up a processing mechanism, the folded metal sheet metal parts can be automatically welded and the edges after welding can be automatically polished to further improve the processing efficiency of the metal sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structural connection between the pressing mechanism and the bending mechanism in the present invention.

[0019] Figure 3 It is a structural schematic diagram of the bending mechanism in the present invention.

[0020] Figure 4 It is a structural schematic diagram of the top pressing mechanism in the present invention.

[0021] Figure 5 It is a schematic diagram of partial structural connection of the pressing mechanism in the present invention.

[0022] Figure 6 It is a connection schematic diagram of a partial structure of the pressing mechanism in the present invention from another angle.

[0023] Figure 7 It is a structural schematic diagram of the bending mechanism in the present invention.

[0024] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0025] Fig. 9 For the present invention Figure 7 Enlarged view of point B in the middle.

[0026] Fig.10 It is a structural schematic diagram of the processing mechanism in the present invention.

[0027] Fig.11 For the present invention Fig.10 Enlarged view of point C in the middle.

[0028] In the figure: 1, base; 2, first bracket; 21, cylinder frame; 22, lifting cylinder; 3, top pressing mechanism; 4, bending mechanism; 5, processing mechanism; 31, mechanism top frame; 32, adjusting outer cylinder; 321, driving plate; 322, driving longitudinal axis; 323, first motor; 33, first adjusting slide; 331, first frame; 34, second adjusting slide; 341, second frame; 35, first pressing frame; 351, first telescopic cylinder; 352, first end pressing block; 36, second pressing frame; 361, second telescopic cylinder; 362, second end pressing block; 37, auxiliary seat; 371, guide slide shaft; 372, limit bottom ring; 373, guide slide groove; 374, limit top ring; 41, second bracket; 42, bottom base plate; 421, positioning angle; 401, outer folding groove; 402, inner folding groove; 403, sinking groove ;43. first outer folding plate;431. second outer folding plate;44. first inner folding plate;441. second inner folding plate;45. stabilizing seat;451. stabilizing longitudinal column;452. spring;46. first right-angle frame;461. first cam;462. first conical tooth;463. first pulley transmission group;464. second pulley transmission group;465. second motor;466. second conical tooth;47. second right-angle frame;471. second cam;472. third conical tooth;473. third pulley transmission group;474. fourth pulley transmission group;475. third motor;476. fourth conical tooth;51. linear electric rail;52. horizontal bracket;53. telescopic rod;54. machining longitudinal frame;55. welding head;56. third right-angle frame;57. grinding disc;571. fifth conical tooth;58. fourth motor. DETAILED DESCRIPTION

[0029] 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.

[0030] Example: Figure 1-11 As shown, the present invention provides a metal sheet metal processing device, including a base 1, a first bracket 2 is fixedly installed on the top of the base 1, a cylinder frame 21 is fixedly installed on the top of the first bracket 2, a plurality of evenly distributed lifting cylinders 22 are fixedly installed on the cylinder frame 21, a pressing mechanism 3 is fixedly installed on the driving end of the plurality of lifting cylinders 22, the plurality of lifting cylinders 22 are controlled to open and drive the pressing mechanism 3 to lift, a bending mechanism 4 is provided below the pressing mechanism 3, the bending mechanism 4 is fixedly installed on the top of the base 1, and processing mechanisms 5 are provided at the four corners of the bending mechanism 4.

[0031] The top pressing mechanism 3 includes a mechanism top frame 31, which is fixedly installed on the driving end of the plurality of lifting cylinders 22. An adjusting outer cylinder 32 is fixedly installed in the middle of the bottom end of the mechanism top frame 31. The bottom sliding card of the adjusting outer cylinder 32 is provided with two symmetrically distributed first adjusting slides 33 and two symmetrically distributed second adjusting slides 34. The two first adjusting slides 33 and the two second adjusting slides 34 are distributed in a ring array. A driving disk 321 is rotatably installed on the inner top of the adjusting outer cylinder 32. A driving longitudinal axis is fixedly installed in the middle of the driving disk 321. The first adjusting slide 33 is provided with a first frame 331 fixedly mounted on one end of the first adjusting slide 33 away from the adjusting outer cylinder 32, and the first frame 331 is fixedly mounted on one end of the first adjusting slide 33 away from the first adjusting slide 33, and the first pressing frame 35 is fixedly mounted on one end of the first adjusting slide 331 away from the first adjusting slide 33, and the second adjusting slide 33 is fixedly mounted on one end of the first adjusting slide 331 away from the first adjusting slide 33, and the first pressing frame 35 is fixedly mounted on the second adjusting slide 33, and the first adjusting slide 33 is fixedly mounted on the first frame 331, and the first adjusting slide 33 is fixedly mounted on the first pressing frame 35, and the first adjusting slide 33 is fixedly mounted on the first adjusting slide 3 ... The second frame 341 is fixedly installed at one end of the frame 34 away from the adjusting outer cylinder 32, and the second pressing frame 36 is fixedly installed at one end of the second frame 341 away from the second adjusting slide 34. A first motor 323 is fixedly installed at the middle of the top end of the adjusting outer cylinder 32. The driving end of the first motor 323 and the top end of the driving longitudinal shaft 322 are fixedly installed. When in use, the first motor 323 is controlled to control the driving longitudinal shaft 322 to rotate, thereby driving the driving disk 321 to rotate, and the flat thread convex is movably engaged in the flat thread groove to drive the two first motors 323 and the second motor 323 to rotate. The first adjusting slide 33 and the two second adjusting slides 34 slide synchronously in opposite directions, thereby controlling the first pressing frames 35 and the second pressing frames 36 on both sides to move synchronously in opposite directions. On the contrary, the first motor 323 is controlled to start and control the driving longitudinal shaft 322 to rotate in the opposite direction, thereby driving the driving disk 321 to rotate in the opposite direction, and the plane thread protrusion is movably engaged in the plane thread groove, driving the two first adjusting slides 33 and the two second adjusting slides 34 to slide synchronously in opposite directions, thereby controlling the first pressing frames 35 and the second pressing frames 36 on both sides to move synchronously in opposite directions. Two symmetrically distributed first telescopic cylinders 351 are fixedly installed in the first pressing frame 35, and the driving end of the first telescopic cylinder 351 extends out of the end of the first pressing frame 35 and is fixedly installed with a first end pressing block 352. Two symmetrically distributed second telescopic cylinders 361 are fixedly installed in the second pressing frame 36, and the driving end of the second telescopic cylinder 361 extends out of the end of the second pressing frame 36 and is fixedly installed with a second end pressing block 362. The opposite ends of the first end pressing block 352 and the second end pressing block 362 are in contact with each other, and the first end pressing blocks 352 on both sides are driven to slide backwards by controlling to open the first telescopic cylinders 351 on both sides, and the second end pressing blocks 362 on both sides are driven to slide backwards by controlling to open the second telescopic cylinders 361 on both sides.

[0032] Auxiliary seats 37 are vertically installed at both ends of the first pressing frame 35 and the second pressing frame 36, and guide slide shafts 371 are vertically installed at the ends of the auxiliary seats 37. A guide slide groove 373 corresponding to the guide slide shaft 371 is opened at the end of the mechanism top frame 31, and the guide slide shaft 371 is slidably engaged in the corresponding guide slide groove 373. A limiting bottom ring 372 is fixedly installed in the middle of the guide slide shaft 371, and the upper surface of the limiting bottom ring 372 contacts the lower surface of the mechanism top frame 31. A limiting top ring 374 is fixedly installed on the top of the guide slide shaft 371, and the lower surface of the limiting top ring 374 contacts the upper surface of the mechanism top frame 31. When the first pressing frame 35 and the second pressing frame 36 move horizontally, the guide slide shaft 371 slides in the guide slide groove 373, thereby increasing the stability of the horizontal movement of the first pressing frame 35 and the second pressing frame 36.

[0033] The bending mechanism 4 includes a plurality of evenly distributed second brackets 41, which are fixedly mounted on the top of the base 1, and a bottom substrate 42 is fixedly mounted on the top of the plurality of second brackets 41. Positioning angles 421 are fixedly mounted at the four corners of the top of the bottom substrate 42. When in use, the metal sheet metal for processing the industrial switch casing to be processed is clamped in the positioning angles 421 for positioning. An outer folding groove 401 and an inner folding groove 402 are provided on the bottom substrate 42. The outer folding groove 401 is located outside the inner folding groove 402. The outer folding groove 401 is used for one folding, and the inner folding groove 402 is used for a second folding after the one folding. Two symmetrically distributed first outer folding plates 43 and two symmetrically distributed second outer folding plates 431 are movable in the outer folding groove 401. The first outer folding plate 43 and the second outer folding plate 431 are movable. The inner folding groove 402 is vertically distributed, and two first inner folding plates 44 and two second inner folding plates 441 are symmetrically distributed. The first inner folding plate 44 and the second inner folding plate 441 are vertically distributed. Both ends of the outer walls of the first outer folding plate 43, the second outer folding plate 431, the first inner folding plate 44 and the second inner folding plate 441 are fixedly installed with a stabilizing seat 45. The ends of the stabilizing seat 45 are movably inserted with a stabilizing longitudinal column 451. The stabilizing longitudinal column 451 is fixedly installed at the bottom end of the bottom base plate 42. The top of the stabilizing seat 45 is provided with a spring 452, and the spring 452 is movably sleeved on the outside of the stabilizing longitudinal column 451. By setting the stabilizing seat 45 and the stabilizing longitudinal column 451, the stability of the vertical lifting of the first outer folding plate 43, the second outer folding plate 431, the first inner folding plate 44 and the second inner folding plate 441 is increased. The opposite ends of the adjacent first outer folding plates 43 and the second outer folding plates 431 are each provided with a first right-angle frame 46, the first right-angle frame 46 is fixedly mounted on the bottom end of the bottom substrate 42, and two vertically distributed first cams 461 are rotatably mounted on the bottom of the first right-angle frame 46, the outer sides of the first cams 461 are respectively in contact with the lower surfaces of the first outer folding plates 43 and the second outer folding plates 431, the shaft ends of the two first cams 461 are each fixedly mounted with first conical teeth 462, the two adjacent first conical teeth 462 are meshed and connected, the shaft ends of the first cams 461 at both ends of the first outer folding plate 43 are each provided with a first pulley transmission group 463, the first pulley transmission group 463 includes two first pulleys and a first belt movably sleeved on the outer sides of the two first pulleys, the two first pulleys are respectively fixedly mounted on the shaft ends of the corresponding first cams 461, and the shaft ends of the first cams 461 at both ends of the second outer folding plate 431 are each provided with a second pulley transmission group 464, The second pulley transmission group 464 includes two second pulleys and a second belt movably sleeved on the outside of the two second pulleys, the two second pulleys are respectively fixedly mounted on the shaft ends corresponding to the first cam 461, a second motor 465 is provided at the position of one of the first right-angle frames 46, and a second conical tooth 466 is fixedly mounted on the driving end of the second motor 465, and the second conical tooth 466 is meshingly connected with the corresponding first conical tooth 462. When in use, the second motor 465 is controlled to be turned on to drive the second conical tooth 466 to drive the corresponding first conical tooth 462 to rotate, and the meshing connection of the adjacent first conical teeth 462 and the transmission of the first pulley transmission group 463 and the second pulley transmission group 464 are coordinated to synchronously drive the multiple first cams 461 to rotate, thereby controlling the first outer folding plate 43 and the second outer folding plate 431 to move up in the outer folding groove 401, and automatically folding the four sides of the pressed metal sheet metal once; The opposite ends of the adjacent first inner folding plates 44 and the second inner folding plates 441 are each provided with a second right-angle frame 47, the second right-angle frame 47 is fixedly mounted on the bottom end of the bottom substrate 42, and the bottom of the second right-angle frame 47 is rotatably mounted with two vertically distributed second cams 471, the outer sides of the second cams 471 are respectively in contact with the lower surfaces of the first inner folding plates 44 and the second inner folding plates 441, and the shaft ends of the two second cams 471 are each fixedly mounted with third conical teeth 472, and the two adjacent third conical teeth 472 are meshed and connected, and the shaft ends of the second cams 471 at both ends of the first inner folding plate 44 are each provided with a third pulley transmission group 473, the third pulley transmission group 473 includes two third pulleys and a third belt movably sleeved on the outer sides of the two third pulleys, the two third pulleys are respectively fixedly mounted on the shaft ends of the corresponding second cams 471, and the shaft ends of the second cams 471 at both ends of the second inner folding plate 441 are each provided with a fourth pulley transmission group 474, The fourth pulley transmission group 474 includes two fourth pulleys and a fourth belt movably sleeved on the outside of the two fourth pulleys, the two fourth pulleys are respectively fixedly mounted on the shaft ends of the corresponding second cams 471, and a third motor 475 is provided at the position of one of the second right-angle frames 47, and the driving end of the third motor 475 is fixedly mounted with a fourth conical tooth 476, and the fourth conical tooth 476 is meshingly connected with the corresponding third conical tooth 472. When in use, the third motor 475 is controlled to start and drive the fourth conical tooth 476 to drive the corresponding third conical tooth 472 to rotate, and the meshing connection of the adjacent third conical teeth 472 and the transmission of the third pulley transmission group 473 and the fourth pulley transmission group 474 are coordinated to synchronously drive multiple second cams 471 to rotate, thereby controlling the first inner folding plate 44 and the second inner folding plate 441 to move up in the inner folding groove 402, and automatically performing a secondary inner folding on the four sides of the pressed metal sheet metal.

[0034] The processing mechanism 5 includes a linear electric rail 51, which is fixedly installed on the outside of the corresponding positioning angle 421. A horizontal bracket 52 is vertically installed on the driving end of the linear electric rail 51, and a telescopic rod 53 is fixedly installed on the top of the horizontal bracket 52. A processing vertical frame 54 is fixedly installed on the driving end of the telescopic rod 53. A welding head 55 is fixedly installed on the bottom of the processing vertical frame 54. The four corners of the inner folding groove 402 are all provided with sunken through grooves 403 corresponding to the welding head 55. After the metal sheet metal is folded all around, the telescopic rod 53 is controlled to drive the processing vertical frame 54 and the welding head 55 to move horizontally, and the linear electric rail 51 is controlled to drive the welding head 55 to move vertically, and the welding head 55 is moved to the edge welding position of the metal sheet metal, and the welding head 55 is used to automatically weld it. A third right-angle frame 56 is fixedly installed in the middle of the processing longitudinal frame 54, and two vertically distributed grinding discs 57 are rotatably installed in the middle of the third right-angle frame 56. The axial ends of the grinding discs 57 are fixedly installed with fifth conical teeth 571, and the fifth conical teeth 571 are meshingly connected. A fourth motor 58 is fixedly installed on the outer side of the third right-angle frame 56, and the driving end of the fourth motor 58 and the axial end of one of the grinding discs 57 are fixedly installed. After welding is completed, the telescopic rod 53 and the linear electric rail 51 are controlled to drive the two grinding discs 57 to move horizontally and vertically, and move the two grinding discs 57 to the welding position of the edge of the metal sheet metal. The fourth motor 58 is controlled to start, and the meshing connection of the fifth conical teeth 571 is cooperated to drive the two grinding discs 57 to rotate synchronously to automatically grind the welding position, thereby further improving the processing efficiency of metal sheet metal processing.

[0035] A method for using a metal sheet metal processing device comprises the following steps: Step 1: clamp the metal sheet metal for processing the industrial switch housing to be processed in the positioning angle 421 for positioning. At this time, the outer folding part of the metal sheet metal corresponds to the outer folding groove 401, and the inner folding part of the metal sheet metal corresponds to the inner folding groove 402; Subsequently, the first motor 323 is controlled to be turned on to control the driving longitudinal shaft 322 to rotate, thereby driving the driving disk 321 to rotate, and the plane thread convex is movably engaged in the plane thread groove, driving the two first adjustment slides 33 and the two second adjustment slides 34 to slide synchronously backwards, and then controlling the first pressing frames 35 on both sides and the second pressing frames 36 on both sides to move backwards synchronously, so that the first pressing frames 35 on both sides and the second pressing frames 36 on both sides correspond to the outer folding groove 401, and then, the first telescopic cylinders 351 on both sides are controlled to be turned on to drive the first end pressing blocks 352 on both sides to slide backwards, and the second telescopic cylinders 361 on both sides are controlled to be turned on to drive the second end pressing blocks 362 on both sides to slide backwards, so that the contact positions of the first end pressing blocks 352 and the second end pressing blocks 362 correspond to the positions of the corners of the outer folding part of the metal sheet metal; Subsequently, the plurality of lifting cylinders 22 are controlled to be turned on to drive the pressing mechanism 3 to be lifted and lowered, so that the pressing mechanism 3 presses the metal sheet metal part. Subsequently, the second motor 465 is controlled to be turned on to drive the second conical teeth 466 to drive the corresponding first conical teeth 462 to rotate, and the meshing connection of the adjacent first conical teeth 462 and the transmission of the first pulley transmission group 463 and the second pulley transmission group 464 are coordinated to synchronously drive the plurality of first cams 461 to rotate, thereby controlling the first outer folding plate 43 and the second outer folding plate 431 to move upward in the outer folding groove 401, and automatically folding the four sides of the pressed metal sheet metal part outward once. Step 2, after folding outward, the entire pressing mechanism 3 is moved upward, and then, the first telescopic cylinders 351 on both sides are controlled to open to drive the first end pressing blocks 352 on both sides to slide toward each other, the second telescopic cylinders 361 on both sides are controlled to open to drive the second end pressing blocks 362 on both sides to slide toward each other, and the first motor 323 is controlled to control the driving longitudinal shaft 322 to rotate in the opposite direction, thereby driving the driving disk 321 to rotate in the opposite direction, and the plane thread convex is movably engaged in the plane thread groove, driving the two first adjustment slides 33 and the two second adjustment slides 34 to slide toward each other synchronously, and then controlling the first pressing frames 35 on both sides and the second pressing frames 36 on both sides to move toward each other synchronously, so that the first pressing frames 35 on both sides and the second pressing frames 36 on both sides correspond to the inner folding groove 402, and the contact positions of the first end pressing blocks 352 and the second end pressing blocks 362 correspond to the positions of the corners of the inner folding part of the metal sheet metal; Subsequently, the entire pressing mechanism 3 is moved downward to press the metal sheet metal again, and then the third motor 475 is controlled to start to drive the fourth conical tooth 476 to drive the corresponding third conical tooth 472 to rotate, and the meshing connection of the adjacent third conical teeth 472 and the transmission of the third pulley transmission group 473 and the fourth pulley transmission group 474 are coordinated to synchronously drive the plurality of second cams 471 to rotate, thereby controlling the first inner folding plate 44 and the second inner folding plate 441 to move upward in the inner folding groove 402, and automatically performing a second inner folding on the four sides of the pressed metal sheet metal; Step 3: After the second folding, the metal sheet metal forms the industrial switch housing. Then, the telescopic rod 53 is controlled to drive the processing vertical frame 54 and the welding head 55 to move horizontally, and the linear electric rail 51 is controlled to drive the welding head 55 to move vertically. The welding head 55 is moved to the edge welding position of the metal sheet metal, and the welding head 55 is used to automatically weld it. After welding is completed, the telescopic rod 53 and the linear electric rail 51 are controlled to drive the two grinding discs 57 to move horizontally and vertically, and the two grinding discs 57 are moved to the welding position of the edge of the metal sheet metal part. The fourth motor 58 is controlled to start, and the meshing connection of the fifth conical teeth 571 is coordinated to drive the two grinding discs 57 to rotate synchronously to automatically grind the welding position; Step 4. After the metal sheet metal is folded, welded and polished, the first end pressure blocks 352 on both sides are driven to slide toward each other by controlling to open the first telescopic cylinders 351 on both sides, and the second end pressure blocks 362 on both sides are driven to slide toward each other, and the first motor 323 is controlled to control the driving longitudinal shaft 322 to rotate in the opposite direction, thereby driving the driving disk 321 to rotate in the opposite direction, and the plane thread convex is movably engaged in the plane thread groove, driving the two first adjusting slides 33 and the two second adjusting slides 34 to slide toward each other synchronously, thereby controlling the first pressure frames 35 on both sides and the second pressure frames 36 on both sides to move toward each other synchronously, and moving the entire top pressing mechanism 3 upward to disengage.

[0036] 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. A metal sheet processing device, comprising a base (1), characterized in that: A first bracket (2) is fixedly mounted on the top of the base (1), a cylinder frame (21) is fixedly mounted on the top of the first bracket (2), a plurality of evenly distributed lifting cylinders (22) are fixedly mounted on the cylinder frame (21), a pressing mechanism (3) is fixedly mounted on the driving ends of the plurality of lifting cylinders (22), a bending mechanism (4) is provided below the pressing mechanism (3), the bending mechanism (4) is fixedly mounted on the top of the base (1), and processing mechanisms (5) are provided at the four corners of the bending mechanism (4).

2. A metal sheet processing device according to claim 1, characterized in that: The pressing mechanism (3) comprises a mechanism top frame (31), the mechanism top frame (31) being fixedly mounted on the driving ends of the plurality of lifting cylinders (22), an adjusting outer cylinder (32) being fixedly mounted at the middle of the bottom end of the mechanism top frame (31), the bottom sliding card of the adjusting outer cylinder (32) being provided with two symmetrically distributed first adjusting slides (33) and two symmetrically distributed second adjusting slides (34), the two first adjusting slides (33) and the two second adjusting slides (34) being distributed in a ring array, the adjusting outer cylinder (3 2) is rotatably mounted on the inner top of the drive disk (321), a driving longitudinal shaft (322) is fixedly mounted in the middle of the drive disk (321), the driving longitudinal shaft (322) is rotatably mounted in the middle of the adjusting outer cylinder (32), a plane threaded protrusion is integrally formed on the lower surface of the drive disk (321), and a plane threaded groove used in conjunction with the plane threaded protrusion is formed on the upper surfaces of the two first adjusting slides (33) and the two second adjusting slides (34), the plane threaded protrusion is movably engaged in the plane threaded groove, and the first adjusting slides (33) and the second adjusting slides (34) are respectively provided with a plane threaded groove and a first threaded groove. A first frame (331) is fixedly mounted on one end of the joint slide (33) away from the adjusting outer cylinder (32); a first pressing frame (35) is fixedly mounted on one end of the first frame (331) away from the first adjusting slide (33); two symmetrically distributed first telescopic cylinders (351) are fixedly mounted in the first pressing frame (35); a driving end of the first telescopic cylinder (351) extends out of the end of the first pressing frame (35) and is fixedly mounted with a first end pressing block (352); and a second adjusting slide (34) away from the adjusting outer cylinder A second frame (341) is fixedly mounted on one end of the second adjusting slide (32); a second pressing frame (36) is fixedly mounted on one end of the second frame (341) away from the second adjusting slide (34); two symmetrically distributed second telescopic cylinders (361) are fixedly mounted in the second pressing frame (36); a driving end of the second telescopic cylinder (361) extends out of the end of the second pressing frame (36) and is fixedly mounted with a second end pressing block (362); and opposite ends of the first end pressing block (352) and the second end pressing block (362) are in contact with each other.

3. A metal sheet processing device according to claim 2, characterized in that: Auxiliary seats (37) are vertically mounted on both ends of the first pressing frame (35) and the second pressing frame (36); guide slide shafts (371) are vertically mounted on the ends of the auxiliary seats (37); guide slide grooves (373) corresponding to the guide slide shafts (371) are opened at the ends of the mechanism top frame (31); the guide slide shafts (371) are slidably engaged in the corresponding guide slide grooves (373); a limiting bottom ring (372) is fixedly mounted in the middle of the guide slide shaft (371); the upper surface of the limiting bottom ring (372) contacts the lower surface of the mechanism top frame (31); a limiting top ring (374) is fixedly mounted on the top of the guide slide shaft (371); the lower surface of the limiting top ring (374) contacts the upper surface of the mechanism top frame (31).

4. A metal sheet processing device according to claim 3, characterized in that: A first motor (323) is fixedly mounted at the middle of the top end of the adjusting outer cylinder (32), and a driving end of the first motor (323) and a top end of the driving longitudinal shaft (322) are fixedly mounted.

5. The metal sheet processing device according to claim 4, characterized in that: The bending mechanism (4) comprises a plurality of evenly distributed second brackets (41), the second brackets (41) being fixedly mounted on the top of the base (1), a bottom base plate (42) being fixedly mounted on the top of the plurality of second brackets (41), positioning angles (421) being fixedly mounted at the four corners of the top of the bottom base plate (42), an outer folding groove (401) and an inner folding groove (402) being provided on the bottom base plate (42), the outer folding groove (401) being located outside the inner folding groove (402), two symmetrically distributed first outer folding plates (43) and two symmetrically distributed second outer folding plates (431) being movablely mounted in the outer folding groove (401), the first outer folding plates (43) and the second outer folding plates (431) being vertically distributed. The inner folding groove (402) is provided with two symmetrically distributed first inner folding plates (44) and two symmetrically distributed second inner folding plates (441), the first inner folding plates (44) and the second inner folding plates (441) are vertically distributed, and both ends of the outer walls of the first outer folding plate (43), the second outer folding plate (431), the first inner folding plate (44) and the second inner folding plate (441) are fixedly installed with a stabilizing seat (45), and the end of the stabilizing seat (45) is movably inserted with a stabilizing longitudinal column (451), and the stabilizing longitudinal column (451) is fixedly installed at the bottom end of the bottom base plate (42), and the top end of the stabilizing seat (45) is provided with a spring (452), and the spring (452) is movably sleeved on the outer side of the stabilizing longitudinal column (451).

6. The metal sheet processing device according to claim 5, characterized in that: The first right-angle frame (46) is provided at the opposite ends of the adjacent first outer folding plate (43) and the second outer folding plate (431), and the first right-angle frame (46) is fixedly installed at the bottom end of the bottom base plate (42). The bottom of the first right-angle frame (46) is rotatably installed with two vertically distributed first cams (461), and the outer sides of the first cams (461) are respectively in contact with the lower surfaces of the first outer folding plate (43) and the second outer folding plate (431), and the shaft ends of the two first cams (461) are fixedly installed with first conical teeth (462), and the two adjacent first conical teeth (462) are meshed and connected, and the shaft ends of the first cams (461) at both ends of the first outer folding plate (43) are provided with a first pulley transmission group (463), and the first pulley transmission group (463) includes two first A pulley and a first belt movably sleeved on the outside of the two first pulleys, the two first pulleys are respectively fixedly mounted on the shaft ends of the corresponding first cams (461), the shaft ends of the first cams (461) at both ends of the second outer folding plate (431) are each provided with a second pulley transmission group (464), the second pulley transmission group (464) comprises two second pulleys and a second belt movably sleeved on the outside of the two second pulleys, the two second pulleys are respectively fixedly mounted on the shaft ends of the corresponding first cams (461), a second motor (465) is provided at the position of one of the first right-angle frames (46), a second conical tooth (466) is fixedly mounted on the driving end of the second motor (465), and the second conical tooth (466) is meshedly connected with the corresponding first conical tooth (462).

7. The metal sheet processing device according to claim 6, characterized in that: The opposite ends of the adjacent first inner folding plate (44) and the second inner folding plate (441) are each provided with a second right-angle frame (47), the second right-angle frame (47) being fixedly mounted on the bottom end of the bottom base plate (42), the bottom of the second right-angle frame (47) being rotatably mounted with two second cams (471) distributed vertically, the outer sides of the second cams (471) respectively contact the lower surfaces of the first inner folding plate (44) and the second inner folding plate (441), the shaft ends of the two second cams (471) are each fixedly mounted with a third conical tooth (472), the two adjacent third conical teeth (472) being meshed and connected, the shaft ends of the second cams (471) at both ends of the first inner folding plate (44) are each provided with a third pulley transmission group (473), the third pulley transmission group (473) comprising two third A pulley and a third belt movably sleeved on the outside of the two third pulleys, the two third pulleys are respectively fixedly mounted on the shaft ends of the corresponding second cams (471), the shaft ends of the second cams (471) at both ends of the second inner folding plate (441) are each provided with a fourth pulley transmission group (474), the fourth pulley transmission group (474) comprises two fourth pulleys and a fourth belt movably sleeved on the outside of the two fourth pulleys, the two fourth pulleys are respectively fixedly mounted on the shaft ends of the corresponding second cams (471), a third motor (475) is provided at the position of one of the second right-angle frames (47), a fourth conical tooth (476) is fixedly mounted on the driving end of the third motor (475), and the fourth conical tooth (476) is meshedly connected with the corresponding third conical tooth (472).

8. The metal sheet processing device according to claim 7, characterized in that: The processing mechanism (5) comprises a linear electric rail (51), the linear electric rail (51) being fixedly mounted on the outside of a corresponding positioning angle (421), a horizontal bracket (52) being vertically mounted on the driving end of the linear electric rail (51), a telescopic rod (53) being fixedly mounted on the top of the horizontal bracket (52), a processing longitudinal frame (54) being fixedly mounted on the driving end of the telescopic rod (53), a welding head (55) being fixedly mounted on the bottom of the processing longitudinal frame (54), a third right-angle frame (56) being fixedly mounted on the middle of the processing longitudinal frame (54), two vertically distributed grinding discs (57) being rotatably mounted on the middle of the third right-angle frame (56), the shaft ends of the grinding discs (57) being fixedly mounted with fifth conical teeth (571), the fifth conical teeth (571) being meshingly connected, a fourth motor (58) being fixedly mounted on the outside of the third right-angle frame (56), the driving end of the fourth motor (58) and the shaft end of one of the grinding discs (57) being fixedly mounted.

9. The metal sheet processing device according to claim 8, characterized in that: The four corners of the inner folding groove (402) are each provided with a sunken through groove (403) corresponding to the welding head (55).

10. A method for using the metal sheet metal processing device according to claim 9, characterized in that: The steps include: Step 1: clamp the metal sheet metal part for processing the industrial switch casing to be processed in the positioning angle (421) for positioning, at which time, the outer folding part of the metal sheet metal part corresponds to the outer folding groove (401), and the inner folding part of the metal sheet metal part corresponds to the inner folding groove (402); Subsequently, the first motor (323) is controlled to be turned on to control the driving longitudinal axis (322) to rotate, thereby driving the driving disk (321) to rotate, and the plane thread protrusion is movably engaged in the plane thread groove, driving the two first adjustment slides (33) and the two second adjustment slides (34) to slide synchronously in opposite directions, thereby controlling the first pressing frames (35) on both sides and the second pressing frames (36) on both sides to move synchronously in opposite directions, so that the first pressing frames (35) on both sides and the second pressing frames (36) on both sides correspond to the outer folding groove (401), and subsequently, the first telescopic cylinders (351) on both sides are controlled to be turned on to drive the first end pressing blocks (352) on both sides to slide in opposite directions, and the second telescopic cylinders (361) on both sides are controlled to be turned on to drive the second end pressing blocks (362) on both sides to slide in opposite directions, so that the contact position of the first end pressing block (352) and the second end pressing block (362) corresponds to the position of the corner of the outer folding part of the metal sheet metal part; Subsequently, the plurality of lifting cylinders (22) are controlled to be turned on to drive the pressing mechanism (3) to be lifted and lowered, so that the pressing mechanism (3) presses the metal sheet metal part. Subsequently, the second motor (465) is controlled to be turned on to drive the second conical teeth (466) to drive the corresponding first conical teeth (462) to rotate, and the meshing connection of the adjacent first conical teeth (462) and the transmission of the first pulley transmission group (463) and the second pulley transmission group (464) are coordinated to synchronously drive the plurality of first cams (461) to rotate, thereby controlling the first outer folding plate (43) and the second outer folding plate (431) to move upward in the outer folding groove (401), and automatically folding the four sides of the pressed metal sheet metal part outward once. Step 2: After the outer folding, the entire pressing mechanism (3) is moved upward, and then, the first end pressing blocks (352) on both sides are driven to slide toward each other by controlling the first telescopic cylinders (351) on both sides, the second telescopic cylinders (361) on both sides are driven to slide toward each other, and the first motor (323) is controlled to control the driving longitudinal axis (322) to rotate in the opposite direction, thereby driving the driving disk (321) to rotate in the opposite direction, and the plane thread protrusion is movably engaged in the plane thread groove, driving the two first adjustment slides (33) and the two second adjustment slides (34) to slide toward each other synchronously, thereby controlling the first pressing frames (35) on both sides and the second pressing frames (36) on both sides to move toward each other synchronously, so that the first pressing frames (35) on both sides and the second pressing frames (36) on both sides correspond to the inner folding groove (402), and the contact position of the first end pressing block (352) and the second end pressing block (362) corresponds to the position of the corner of the inner folding part of the metal sheet metal part; Subsequently, the entire pressing mechanism (3) is moved downward to press the metal sheet metal again, and then the third motor (475) is controlled to start and drive the fourth conical tooth (476) to drive the corresponding third conical tooth (472) to rotate, and in conjunction with the meshing connection of the adjacent third conical teeth (472) and the transmission of the third pulley transmission group (473) and the fourth pulley transmission group (474), the plurality of second cams (471) are synchronously driven to rotate, thereby controlling the first inner folding plate (44) and the second inner folding plate (441) to move upward in the inner folding groove (402), and automatically performing a second inner folding on the four sides of the pressed metal sheet metal; Step 3: After the secondary folding, the metal sheet metal part forms an industrial switch housing. Subsequently, the telescopic rod (53) is controlled to open to drive the processing longitudinal frame (54) and the welding head (55) to move horizontally, and the linear electric rail (51) is controlled to open to drive the welding head (55) to move vertically, and the welding head (55) is moved to the edge welding position of the metal sheet metal part, and the welding head (55) is used to automatically weld it; After welding is completed, the telescopic rod (53) and the linear electric rail (51) are controlled to be turned on to drive the two grinding discs (57) to move horizontally and vertically, and the two grinding discs (57) are moved to the welding position of the edge of the metal sheet metal part, and the fourth motor (58) is controlled to be turned on, and the meshing connection of the fifth conical teeth (571) is coordinated to drive the two grinding discs (57) to rotate synchronously to automatically grind the welding position; Step 4: After the metal sheet is folded, welded and polished, the first telescopic cylinders (351) on both sides are controlled to open again to drive the first end pressure blocks (352) on both sides to slide towards each other, the second telescopic cylinders (361) on both sides are controlled to open to drive the second end pressure blocks (362) on both sides to slide towards each other, and the first motor (323) is controlled to control the driving longitudinal axis (322) to rotate in the opposite direction, thereby driving the driving disk (321) to rotate in the opposite direction, and the plane thread protrusion is movably engaged in the plane thread groove, driving the two first adjustment slides (33) and the two second adjustment slides (34) to slide towards each other synchronously, thereby controlling the first pressure frames (35) on both sides and the second pressure frames (36) on both sides to move towards each other synchronously, and moving the entire top pressing mechanism (3) upward to disengage.

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