An automatic equipment for punching stator and rotor sheets

Abstract

The present invention relates to the technical field of stamping machinery, and discloses a stator and rotor punching automation equipment, including a frame, a lower die is fixed on the frame, and a rotor punching hole and a stator punching hole are formed on the lower die; a rotor punching automatic stacking device and a rotor punching automatic discharging device are provided below the rotor punching hole; a second conveyor belt is provided directly below the stator punching hole, and a stator punching automatic stacking device is provided on the front side of the second conveyor belt. It can automatically align and stack a number of rotor punches into a certain number through the rotor punching automatic stacking device, and then automatically output them through the rotor punching automatic discharging device; the rotor punches can be automatically output, aligned, and stacked through the second conveyor belt and the stator punching automatic stacking device, which can effectively improve the stacking efficiency and production efficiency of stator punches and rotor punches, and can greatly reduce the labor intensity of workers.

Description

Technical field:

[0001] The invention relates to the technical field of stamping machinery, and in particular to automatic equipment for stamping stators and rotors. Background technology:

[0002] The stator and rotor are both very important parts in the motor, and the corresponding production process requirements are very high. The stator and rotor are both made of thin sheet metal stampings, and the stacked metal stampings are fixed by rivets. The existing stator and rotor stamping equipment cannot automatically align and stack the stamped stator and rotor stampings. When the stator and rotor are assembled afterwards, it is necessary to manually align several stator stampings (rotor stampings) and then form a stator (rotor) through welding, riveting and other fixing methods. However, the efficiency of manual alignment and stacking is very low, and the labor intensity of the staff is high. Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automatic equipment for stator and rotor punching, which can automatically align and stack a number of rotor punchings into a certain number through a rotor punching automatic stacking device, and then automatically output them through a rotor punching automatic discharging device; the rotor punchings can be automatically output, aligned and stacked through a second conveyor belt and a stator punching automatic stacking device, which can effectively improve the stacking efficiency and production efficiency of stator punchings and rotor punchings, and can greatly reduce the labor intensity of workers.

[0004] The solution of the present invention to solve the technical problem is:

[0005] An automatic device for punching rotor sheets, comprising a frame, a lower die is fixed on the upper part of the frame, and a rotor sheet punching hole and a stator sheet punching hole are formed on the lower die; a rotor sheet automatic stacking device and a rotor sheet automatic discharging device are arranged below the rotor sheet punching hole; the rotor sheet automatic discharging device comprises a first discharging conveyor belt for conveying the rotor sheets forward and a push plate that can be moved left and right; the rotor sheet automatic stacking device comprises a base in the shape of a hollow stepped column, a lifting and lowering receiving cylinder is sleeved on the upper end of the base, the first discharging conveyor belt is located on the left side of the base, and the push plate is located above the first conveyor belt and the base;

[0006] A second conveyor belt for conveying the stator punching sheets forward is provided directly below the punching holes of the stator punching sheets, and a stator punching sheet automatic stacking device is provided on the front side of the second conveyor belt.

[0007] The rotor punching automatic stacking mechanism also includes a guide core shaft arranged coaxially with the receiving barrel, the guide core shaft is located directly below the punching hole of the rotor punching, a sheet pressing mechanism is provided at the upper end of the guide core shaft, and a first driving mechanism for driving the guide core shaft to rotate and lift is provided on the base.

[0008] The upper end of the guide mandrel is formed with a guide cone and a regular polygonal hole with an upper opening, each side of the regular polygonal hole is formed with a rack groove, and the outer wall of the upper end of the guide mandrel is formed with a plurality of gear grooves corresponding to and communicating with the plurality of rack grooves;

[0009] The sheet pressing mechanism comprises a regular polygonal column matched with the regular polygonal hole, a rack is fixed on each side of the regular polygonal column, each rack is meshed with a half gear, the half gear is inserted in the gear groove, the half gear is hinged on the gear shaft through a bearing, the gear shaft is inserted and fixed on a corresponding gear groove; a pressing plate is fixed on the outer wall of the half gear, and a rubber pad is fixed on the end of the pressing plate away from the half gear;

[0010] The lower end of the regular polygonal column is fixedly connected to the telescopic rod of the first telescopic cylinder, and the first telescopic cylinder is fixed on the bottom surface of the regular polygonal hole;

[0011] A limiting groove is formed on one side wall of the regular polygonal column, a limiting pin is sleeved in the limiting groove, and the limiting pin is fixed on the guide core shaft;

[0012] When the lower end of the limiting groove is pressed against the limiting pin, the pressing plate is in a horizontal state.

[0013] The lower end of the guide mandrel is formed with a countersunk hole with a lower opening, and the middle of the countersunk hole is formed with a boss;

[0014] The first driving mechanism comprises a lifting bracket, the upper end of which is formed with a circular limiting sleeve, the outer diameter of which is in clearance with the inner diameter of the countersunk hole;

[0015] A first motor on the lifting bracket, a first gear fixed on the motor shaft of the first motor, the first gear meshing with a first inner gear ring, and the first inner gear ring fixed to the lower end of the guide mandrel;

[0016] A second telescopic cylinder is fixed to the upper end of the lifting bracket, and a top block is fixed to the telescopic rod of the second telescopic cylinder through a push-pull rod, and the top block is pressed against the lower bottom surface of the boss; a spring support seat is provided on the outer side of the top block, and the spring support seat is fixed on the boss, and a compression spring is clamped between the lower bottom surface of the top block and the lower bottom surface of the spring support seat;

[0017] The lower end of the lifting bracket is inserted into two vertically arranged guide rods, the two ends of the guide rods are respectively fixed on the upper support plate and the base, and the upper support plate is fixedly connected to the base;

[0018] A screw rod arranged parallel to the guide rod is rotatably connected between the upper support plate and the base via a bearing, and the lower end of the lifting bracket is screwed on the screw rod; a servo motor driving the screw rod to rotate is fixed on the base.

[0019] The material receiving cylinder includes an upper conical cylinder, an intermediate cylinder and a lower cylinder which are integrally formed; the upper conical cylinder is larger at the top and smaller at the bottom, the inner diameter of the intermediate cylinder is clearance-matched with the outer diameter of the rotor punching, an electromagnet is fixed on the lower bottom surface of the intermediate cylinder, and the rotor punching can be adsorbed by the electromagnet, a first connecting block is fixed on the inner wall of the lower cylinder, the first connecting block is fixed on the first slider of the linear module, the linear module is vertically arranged and fixed in the base; the first slider and the first connecting block are inserted into the slot of the base.

[0020] The rotor punching automatic discharging device also includes a second slider fixed to the rear end of the push plate, the second slider is slidably connected to a second guide rail arranged in the left and right directions, the second slider is fixed to the end of the telescopic rod of the third telescopic cylinder, and the third telescopic cylinder and the second guide rail are fixedly connected to the bottom of the lower mold through the second connecting block;

[0021] A baffle is provided at the front end of the first conveyor belt, and the baffle is fixed on the frame; the first conveyor belt is provided with a third motor for driving it to transmit forward.

[0022] The stator punching automatic stacking device comprises a material receiving mandrel arranged in front of the second conveyor belt, a driving cavity with a lower opening is formed inside the material receiving mandrel, a plurality of rectangular grooves evenly distributed around the circumference are formed on the side wall of the driving cavity, a telescopic block matching with it is sleeved in each rectangular groove, a first magnet block is fixed to the outer end of the telescopic block, a first inclined surface is formed on the inner end of the telescopic block, which is pressed against a corresponding second inclined surface on the driving block, a second magnet block is inlaid on the second inclined surface, and the telescopic block can be adsorbed by the second magnet block; the lower end of the driving block is connected by a bearing A connecting sleeve is rotatably connected, and the connecting sleeve is fixed to the end of the telescopic rod of the fourth telescopic cylinder; the fourth telescopic cylinder is fixed on the base shaft, and the base shaft is fixed on the frame; the material receiving mandrel is hinged on the base shaft through a bearing; a fourth motor is fixed on the base shaft, and a second gear is fixed to the motor shaft of the fourth motor, and the second gear is meshed with a second inner gear ring, and the second inner gear ring is fixed to the material receiving mandrel; a spring support plate is fixed to the inner end of the telescopic block, and the spring support plate is fixed to one end of the second compression spring, and the other end of the second compression spring is fixed to the inner wall of the driving chamber;

[0023] The upper end of the driving block is formed with an auxiliary guide rod coaxially arranged with the connecting sleeve, the auxiliary guide rod is inserted and sleeved on the inner ring of the positioning bearing, and the positioning bearing is fixed on the material receiving core shaft;

[0024] A positioning strip is provided on one side of the material receiving core shaft, and the cross section of the positioning strip matches the positioning groove of the stator punching sheet;

[0025] The lower end of the positioning bar is fixed on the bottom block, and the bottom block is fixed on the frame.

[0026] The upper end of the material receiving mandrel is formed with a rounded corner;

[0027] The uppermost end of the receiving mandrel is lower than the height of the upper half of the second conveyor belt;

[0028] Guide plates are provided on both sides of the front end of the second conveyor belt, and the two guide plates form a "Y"-shaped channel and are fixed on the frame;

[0029] The second conveyor belt is provided with a fifth motor for driving the second conveyor belt to be transported forward.

[0030] A vibration block is provided above the positioning strip, the contour of one end of the vibration block close to the material receiving core shaft is consistent with the contour of the cross section of the positioning strip, the other end of the vibration block is formed with an L-shaped plate, a tension spring is fixed on the L-shaped plate, and the upper end of the tension spring is fixed to the extension block at the upper end of the positioning strip; a first waist-shaped hole is formed on the L-shaped plate, a first limiting rod is sleeved on the first waist-shaped hole, the inner end of the first limiting rod is fixed on the extension block, and a blocking part is fixed to the outer end of the first limiting rod;

[0031] A second waist-shaped hole is formed on the back of the positioning strip, a step column is sleeved in the second waist-shaped hole, and the step column is fixed on the L-shaped plate;

[0032] When the step surface of the step column is pressed against the back of the positioning strip, the contour of the end of the vibration block close to the material receiving mandrel coincides with the positioning strip in the top view direction;

[0033] A vibrating machine is fixed to the bottom of the L-shaped plate.

[0034] The maximum gap between the lower bottom surface of the vibration block and the upper end of the positioning bar is smaller than the thickness of the stator punching sheet.

[0035] The outstanding effects of the present invention are:

[0036] Compared with the prior art, it can automatically align and stack several rotor punches into a certain number through the rotor punch automatic stacking device, and then automatically output them through the rotor punch automatic discharging device; the rotor punches can be automatically output, aligned and stacked through the second conveyor belt and the stator punch automatic stacking device, which can effectively improve the stacking efficiency and production efficiency of stator punches and rotor punches, and can greatly reduce the labor intensity of workers. Description of the drawings:

[0037] Figure 1 It is a structural schematic diagram of the present invention;

[0038] Figure 2 for Figure 1 About the cross-sectional view of AA;

[0039] Figure 3 for Figure 2 A partial enlarged view of B;

[0040] Figure 4 for Figure 1A partial enlarged view of C;

[0041] Figure 5 for Figure 2 The view about D;

[0042] Figure 6 for Figure 4 About the cross-sectional view of EE;

[0043] Figure 7 for Figure 6 A partial enlarged view of F;

[0044] Figure 8 It is a schematic diagram of the structure of the rotor punching sheet involved in the present invention;

[0045] Fig. 9 It is a structural schematic diagram of the stator punching sheet involved in the present invention;

[0046] Fig.10 A schematic diagram of the shape change of the raw material involved in the present invention after being stamped;

[0047] Fig.11 A schematic diagram of the positional relationship between the lower mold and the raw material of the present invention. Specific implementation method:

[0048] For example, see Figures 1 to 11 As shown, a stator and rotor punching automation equipment comprises a frame 1, a lower die 2 is fixed on the upper part of the frame 1, and the characteristics are as follows: the lower die 2 is formed with rotor punching holes 21 and stator punching holes 22 arranged on the left and right; a rotor punching automatic stacking device 3 and a rotor punching automatic discharging device 4 are arranged below the rotor punching holes 21; the rotor punching automatic discharging device 4 comprises a first discharging conveyor belt 41 for conveying rotor punchings 91 forward and a push plate 42 which can be moved left and right; the rotor punching automatic stacking device 3 comprises a base 31 in the shape of a hollow stepped column, a liftable receiving barrel 32 is sleeved on the upper end of the base 31, the first discharging conveyor belt 41 is located on the left side of the base 31, and the push plate 42 is located above the first conveyor belt 41 and the base 31; a plurality of circumferentially evenly distributed card slots 911 and buckles 912 corresponding to the card slots 911 are formed on the rotor punchings;

[0049] A second conveyor belt 51 for conveying the stator punching sheets 92 forward is provided directly below the stator punching holes 22 , and a stator punching sheet automatic stacking device 6 is provided on the front side of the second conveyor belt 51 .

[0050] Furthermore, the rotor punching automatic stacking mechanism 3 also includes a guide core shaft 33 arranged coaxially with the receiving barrel 32, the guide core shaft 33 is located directly below the rotor punching hole 21, a pressing mechanism 34 is provided at the upper end of the guide core shaft 33, and a first driving mechanism 35 is provided on the base 31 for driving the guide core shaft 33 to rotate and lift.

[0051] Furthermore, the upper end of the guide core shaft 33 is formed with a guide cone 331 and a regular polygonal hole 332 with an upper opening, and each side of the regular polygonal hole 332 is formed with a rack groove 333, and the upper end outer wall of the guide core shaft 33 is formed with a plurality of gear grooves 334 corresponding to and communicating with the plurality of rack grooves 333;

[0052] The sheet pressing mechanism 34 includes a regular polygonal column 341 matched with the regular polygonal hole 332, a rack 342 is fixed on each side of the regular polygonal column 341, each rack 342 is meshed with a half gear 343, the half gear 343 is inserted in the gear groove 334, the half gear 343 is hinged on the gear shaft 344 through a bearing, the gear shaft 344 is inserted and fixed on a corresponding gear groove 334; a pressing plate 345 is fixed on the outer wall of the half gear 343, and a rubber pad 346 is fixed on the end of the pressing plate 345 away from the half gear 343;

[0053] The lower end of the regular polygonal column 341 is fixedly connected to the telescopic rod of the first telescopic cylinder 347, and the first telescopic cylinder 347 is fixed on the bottom surface of the regular polygonal hole 332;

[0054] A limiting groove 3411 is formed on one side wall of the regular polygonal column 341, and a limiting pin 348 is sleeved in the limiting groove 3411. The limiting pin 348 is fixed on the guide core shaft 33;

[0055] When the lower end of the limiting groove 3411 is pressed against the limiting pin 348 , the pressing plate 345 is in a horizontal state.

[0056] Furthermore, the lower end of the guide mandrel 33 is formed with a countersunk hole 335 with a lower opening, and a boss 336 is formed in the middle of the countersunk hole 335;

[0057] The first driving mechanism 35 includes a lifting bracket 351, and a circular limiting sleeve 3511 is formed on the upper end of the lifting bracket 351. The outer diameter of the circular limiting sleeve 3511 is clearance-matched with the inner diameter of the counterbore 335;

[0058] The first motor 352 on the lifting bracket 351 has a first gear 353 fixed on the motor shaft of the first motor 352, the first gear 353 is meshed with a first inner gear ring 354, and the first inner gear ring 354 is fixed to the lower end of the guide core shaft 33;

[0059] A second telescopic cylinder 355 is fixed to the upper end of the lifting bracket 351, and a top block 356 is fixed to the telescopic rod of the second telescopic cylinder 355 through a push-pull rod, and the top block 356 is pressed against the lower bottom surface of the boss 336; a spring support seat 357 is provided on the outer side of the top block 356, and the spring support seat 357 is fixed on the boss 336, and a compression spring 358 is sandwiched between the lower bottom surface of the top block 356 and the lower bottom surface of the spring support seat 357;

[0060] The lower end of the lifting bracket 351 is inserted into two vertically arranged guide rods 359, and the two ends of the guide rods 359 are respectively fixed to the upper support plate 360 ​​and the base 31, and the upper support plate 360 ​​is fixedly connected to the base 31;

[0061] A screw rod 361 arranged parallel to the guide rod 359 is rotatably connected between the upper support plate 360 ​​and the base 31 via a bearing, and the lower end of the lifting bracket 351 is screwed on the screw rod 361; a servo motor 362 is fixed on the base 31 to drive the screw rod 361 to rotate.

[0062] Furthermore, the material receiving cylinder 32 includes an upper conical cylinder 321, an intermediate cylinder 322 and a lower cylinder 323 which are integrally formed; the upper conical cylinder 321 is larger at the top and smaller at the bottom, the inner diameter of the intermediate cylinder 322 is clearance-matched with the outer diameter of the rotor punching 91, an electromagnet 37 is fixed on the lower bottom surface of the intermediate cylinder 322, and the rotor punching 91 can be adsorbed by the electromagnet 37, and a first connecting block 324 is fixed on the inner wall of the lower cylinder 323, and the first connecting block 324 is fixed on the first slider 326 of the linear module 325, and the linear module 325 is vertically arranged and fixed in the base 31; the first slider 326 and the first connecting block 324 are inserted into the slot 311 of the base 31.

[0063] Furthermore, the rotor punching automatic discharging device 4 also includes a second slider 43 fixed to the rear end of the push plate 42, the second slider 43 is slidably connected to a second guide rail 44 arranged in the left and right directions, the second slider 43 is fixed to the end of the telescopic rod of the third telescopic cylinder 45, and the third telescopic cylinder 45 and the second guide rail 44 are fixedly connected to the bottom of the lower mold 2 through a second connecting block 46;

[0064] A baffle 47 is provided at the front end of the first conveyor belt 41 , and the baffle 47 is fixed on the frame 1 ; the first conveyor belt 41 is provided with a third motor 48 for driving it to move forward.

[0065] Furthermore, the stator punching automatic stacking device 6 includes a material receiving mandrel 61 arranged in front of the second conveyor belt 51, and the material receiving mandrel 61 is internally formed with a driving cavity 611 with an opening at the bottom, and the side wall of the driving cavity 611 is formed with a plurality of rectangular grooves 612 evenly distributed around the circumference, and each rectangular groove 612 is sleeved with a telescopic block 62 matched therewith, and a first magnet block 80 is fixed to the outer end of the telescopic block 62, and a first inclined surface 621 is formed at the inner end of the telescopic block 62 to press against a corresponding second inclined surface 631 on the driving block 63, and a second magnet block 64 is inlaid on the second inclined surface 631, and the telescopic block 62 can be adsorbed by the second magnet block 64; the lower end of the driving block 63 A connecting sleeve 65 is rotatably connected through a bearing, and the connecting sleeve 65 is fixed to the end of the telescopic rod of the fourth telescopic cylinder 66; the fourth telescopic cylinder 66 is fixed on a base shaft 67, and the base shaft 67 is fixed on the frame 1; the material receiving mandrel 61 is hinged on the base shaft 67 through a bearing; a fourth motor 68 is fixed on the base shaft 67, and a second gear 69 is fixed to the motor shaft of the fourth motor 68, and the second gear 69 is meshed with a second inner gear ring 70, and the second inner gear ring 70 is fixed to the material receiving mandrel 61; a spring support plate 81 is fixed to the inner end of the telescopic block 62, and the spring support plate 81 is fixed to one end of the second compression spring 82, and the other end of the second compression spring 82 is fixed to the inner wall of the driving cavity 611;

[0066] The upper end of the driving block 63 is formed with an auxiliary guide rod 632 coaxially arranged with the connecting sleeve 65, and the auxiliary guide rod 632 is inserted into the inner ring of the positioning bearing 83, and the positioning bearing 83 is fixed on the receiving core shaft 61;

[0067] A positioning strip 71 is provided on one side of the receiving mandrel 61, and the cross section of the positioning strip 71 matches the positioning groove 921 of the stator punching sheet 92;

[0068] The lower end of the positioning bar 71 is fixed on the bottom block 72 , and the bottom block 72 is fixed on the frame 1 .

[0069] Furthermore, the upper end of the material receiving mandrel 61 is formed with a rounded corner 613;

[0070] The uppermost end of the receiving mandrel 61 is lower than the height of the upper half of the second conveyor belt 51;

[0071] Guide plates 73 are provided on both sides of the front end of the second conveyor belt 51. The two guide plates 73 form a "Y"-shaped channel and are fixed on the frame 1.

[0072] The second conveyor belt 51 is provided with a fifth motor 52 for driving the second conveyor belt 51 to be conveyed forward.

[0073] Furthermore, a vibration block 74 is provided above the positioning bar 71, and the profile of one end of the vibration block 74 close to the material receiving core shaft 61 is consistent with the profile of the cross section of the positioning bar 71, and the other end of the vibration block 74 is formed with an L-shaped plate 741, and a tension spring 75 is fixed on the L-shaped plate 741, and the upper end of the tension spring 75 is fixed on the extension block 711 at the upper end of the positioning bar 71; a first waist-shaped hole 742 is formed on the L-shaped plate 741, and a first limiting rod 76 is sleeved on the first waist-shaped hole 742, and the inner end of the first limiting rod 76 is fixed on the extension block 711, and the outer end of the first limiting rod 76 is fixed with a blocking portion 77;

[0074] The back of the positioning strip 71 is formed with a second waist-shaped hole 712, and a step column 78 is sleeved in the second waist-shaped hole 712, and the step column 78 is fixed on the L-shaped plate 741;

[0075] When the step surface of the step column 78 is pressed against the back surface of the positioning strip 71, the contour of the end of the vibration block 74 close to the material receiving mandrel 61 coincides with the positioning strip 71 in the top view direction;

[0076] A vibrator 79 is fixed to the bottom of the L-shaped plate 741 .

[0077] Furthermore, the maximum gap between the lower bottom surface of the vibration block 74 and the upper end of the positioning bar 71 is smaller than the thickness of the stator punching sheet 92 .

[0078] Working principle: Automatic stacking and discharging process of rotor punching: The rotor punching is punched downward from the rotor punching hole 21 by the punching machine. During the automatic falling process, the rotor punching is automatically inserted into the guide core shaft 33 by the guide cone 331 at the upper end of the guide core shaft 33, and then the rotor punching 9 is centrally positioned by the limiting function of the intermediate cylinder 322. After the lowest rotor punching falls on the bottom surface of the intermediate cylinder 322, it is tightly adsorbed by the electromagnet 37 to prevent it from rotating freely.

[0079] Then, the next rotor punching sheet that falls is placed on the previous rotor punching sheet. If the next rotor punching sheet that falls is exactly aligned with the previous rotor punching sheet, the next rotor punching sheet is just inserted into the previous rotor punching sheet and automatically stacked together. If the next rotor punching sheet is not aligned with the previous rotor punching sheet, the next rotor punching sheet is placed on the buckle of the previous rotor punching sheet.

[0080] Regardless of whether the rear rotor punch is aligned with the front rotor punch, after the rear rotor punch is inserted into the guide core shaft 33, the first motor 352 drives the first gear 353 to rotate, and the first gear 353 drives the guide core shaft 33 to rotate through the first inner gear ring 354 (the guide core shaft can also be in a state of rotation all the time); then the first telescopic cylinder 347 drives the regular polygon column 341 to move upward, the regular polygon column 341 drives multiple racks 342 to move upward, and multiple racks 342 drive the corresponding half gears 343 to rotate, and the half gear 343 drives the pressure plate 345 to flip it to a horizontal state; driven by the guide core shaft 33, the pressure plate 345 also rotates with the core shaft; then the second telescopic cylinder 355 drives the top block 356 to move downward through the push-pull rod, and the guide core shaft 33 is at its It automatically moves downward under the action of its own gravity and the action of the compression spring 358, and the guide core shaft drives the pressure plate 345 to move downward, and the pressure plate 345 drives the rubber pad 346 to move downward and press against the uppermost rotor punching. The guide core shaft drives the rotor punching to rotate through the pressure plate and the rubber pad. Since the first compression spring provides a downward pressure on the core shaft, when the slot of the rotor punching is aligned with the buckle of the rotor punching below it, the core shaft drives the rotor punching to automatically move downward and insert it into the rotor punching below, so that they are aligned and stacked; the two rotor punchings can be tightly adsorbed to each other due to their materials (generally silicon steel sheets); then the second telescopic cylinder 355 and the first telescopic cylinder 347 respectively drive the top plate to move up and reset and the regular polygon column to move down and reset, and the pressure plate automatically rotates back to the gear groove;

[0081] Then the servo motor 362 drives the screw 361 to rotate a certain angle, and the screw 361 drives the lifting bracket 351 to move up to the height of the thickness of a rotor punching sheet, and then the next rotor punching sheet that automatically falls onto the core shaft is stacked;

[0082] When the rotor punching sheets are stacked to a certain height, the servo motor drives the screw to rotate in the opposite direction, and the screw drives the lifting bracket to move downward. The lifting bracket drives the core shaft to move downward through the second telescopic cylinder, the push-pull rod, the top block, the compression spring and the spring seat, and moves the core shaft down to the bottom of the stacked rotor punching sheets; then the electromagnet is closed to release the binding effect of the electromagnet on the lowest rotor punching sheets, and then the linear module 325 drives the first slider 326 to move downward, and the first slider 326 drives the first connecting block 324 to move downward, and the first connecting block 324 drives the receiving barrel 32 to move downward through the lower barrel 323 and move downward to the bottom of the stacked rotor punching sheets, and the stacked rotor punching sheets are stacked on the upper end of the base due to the blocking effect of the upper end of the base 31;

[0083] Then, the third telescopic cylinder 45 drives the second slide block 43 to move leftward, and the second slide block 43 drives the push plate 42 to move leftward, and the push plate pushes the stacked rotor punchings on the base 31 onto the first conveyor belt 41, and the stacked rotor punchings are output forward along the first conveyor belt 41. The baffle plate 47 can prevent the stacked rotor punchings from falling from the first conveyor belt 41, and then the staff can directly take away the stacked rotor punchings on the first conveyor belt;

[0084] Stator punching automatic discharging and stacking process: the fourth motor 68 drives the second gear 69 to rotate, the second gear 69 drives the second inner gear ring 70 to rotate, the second inner gear ring 70 drives the receiving mandrel 61 to rotate, and the receiving mandrel 61 drives the telescopic block and the driving block to rotate with it;

[0085] When the stator punching sheet 92 is punched downward from the stator punching hole 22 by the punching machine, the stator punching sheet 92 automatically falls onto the second conveyor belt 51, and then is output forward with the second conveyor belt 51. When the stator punching sheet 92 is transported to the front end of the second conveyor belt 51, the stator punching sheet 92 automatically falls onto the material receiving core shaft 61, and is automatically inserted into the material receiving core shaft 61 through the guiding effect of the rounded corners of the material receiving core shaft 61. The stator punching sheet 92 moves downward and presses against the vibration block 74. The first magnet block 80 on the driving block provides a downward attraction to the stator punching sheet 92, and the stator punching sheet 92 rotates with the material receiving core shaft. When the positioning groove 921 of the stator punching sheet 92 is turned to the upper position, the positioning bar 71 automatically moves downward under the attraction of the first magnet block and is inserted into the positioning bar 71 (insertion into the positioning bar The stator punching sheet no longer rotates with the receiving mandrel) and is pressed against the telescopic block; then the next stator punching sheet output from the second conveyor belt is automatically stacked on the stator punching sheet with the above action. When the number of stator punching sheets on the telescopic block reaches a certain number, the fourth telescopic cylinder 66 drives the connecting sleeve 65 to move down, and the connecting sleeve 65 drives the driving block 63 to move down. The driving block 63 drives the telescopic block to telescope inward through the action of the second magnet block. The stator punching sheets stacked on the telescopic block lose the support of the telescopic block and automatically fall down and stack on the bottom block 72; when the stator punching sheets on the receiving mandrel are piled up to a certain height, they are manually taken out; through the action of the vibrator, the vibrating block can vibrate slightly, which is convenient for the positioning groove 921 of the stator punching sheet to be inserted into the vibrating block, and then inserted into the positioning bar through the guiding action of the vibrating block;

[0086] Thereby realizing the automatic alignment, stacking and discharging of the stator and rotor.

[0087] Finally, the above implementation modes are only used to illustrate the present invention, and are not intended to limit the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be defined by the claims.

Claims

1. An automatic device for punching stator and rotor sheets, comprising a frame (1), a lower die (2) being fixed above the frame (1), characterized in that: The lower die (2) is formed with rotor sheet punching holes (21) and stator sheet punching holes (22) arranged on the left and right; a rotor sheet automatic stacking device (3) and a rotor sheet automatic discharging device (4) are provided below the rotor sheet punching holes (21); the rotor sheet automatic discharging device (4) comprises a first discharging conveyor belt (41) for conveying the rotor sheet (91) forward and a push plate (42) movable left and right; the rotor sheet automatic stacking device (3) comprises a base (31) in the shape of a hollow stepped column, a liftable receiving barrel (32) being sleeved on the upper end of the base (31), the first discharging conveyor belt (41) being located on the left side of the base (31), and the push plate (42) being located above the first discharging conveyor belt (41) and the base (31); A second conveyor belt (51) for conveying the stator punching sheets (92) forward is provided directly below the stator punching holes (22), and a stator punching sheet automatic stacking device (6) is provided on the front side of the second conveyor belt (51); The rotor punching automatic stacking device (3) further comprises a guide mandrel (33) coaxially arranged with the material receiving barrel (32), the guide mandrel (33) being located directly below the rotor punching hole (21), a sheet pressing mechanism (34) being provided at the upper end of the guide mandrel (33), and a first driving mechanism (35) for driving the guide mandrel (33) to rotate and rise and fall being provided on the base (31); The upper end of the guide core shaft (33) is formed with a guide cone (331) and a regular polygonal hole (332) with an upper opening, each side of the regular polygonal hole (332) is formed with a rack groove (333), and the upper end outer wall of the guide core shaft (33) is formed with a plurality of gear grooves (334) corresponding to and communicating with the plurality of rack grooves (333); The sheet pressing mechanism (34) comprises a regular polygonal column (341) matched with the regular polygonal hole (332); a rack (342) is fixed on each side of the regular polygonal column (341); each rack (342) is meshed with a half gear (343); the half gear (343) is inserted into the gear groove (334); the half gear (343) is hinged on the gear shaft (344) through a bearing; the gear shaft (344) is inserted into and fixed on a corresponding gear groove (334); a pressing plate (345) is fixed on the outer wall of the half gear (343); a rubber pad (346) is fixed to the end of the pressing plate (345) away from the half gear (343); The lower end of the regular polygonal column (341) is fixedly connected to the telescopic rod of the first telescopic cylinder (347), and the first telescopic cylinder (347) is fixed on the bottom surface of the regular polygonal hole (332); A limiting groove (3411) is formed on one side wall of the regular polygonal column (341), a limiting pin (348) is sleeved in the limiting groove (3411), and the limiting pin (348) is fixed on the guide core shaft (33); When the lower end of the limiting groove (3411) is pressed against the limiting pin (348), the pressing plate (345) is in a horizontal state; The lower end of the guide mandrel (33) is formed with a countersunk hole (335) with a lower opening, and the middle of the countersunk hole (335) is formed with a boss (336); The first driving mechanism (35) comprises a lifting bracket (351), the upper end of the lifting bracket (351) is formed with a circular limiting sleeve (3511), and the outer diameter of the circular limiting sleeve (3511) is clearance-matched with the inner diameter of the countersunk hole (335); A first motor (352) on the lifting bracket (351), a first gear (353) being fixed on the motor shaft of the first motor (352), the first gear (353) being meshed with a first inner gear ring (354), and the first inner gear ring (354) being fixed on the lower end of the guide core shaft (33); A second telescopic cylinder (355) is fixed to the upper end of the lifting bracket (351); a telescopic rod of the second telescopic cylinder (355) is fixed to a top block (356) via a push-pull rod; the top block (356) rests against the lower bottom surface of the boss (336); a spring support seat (357) is provided on the outer side of the top block (356); the spring support seat (357) is fixed on the boss (336); a compression spring (358) is sandwiched between the lower bottom surface of the top block (356) and the lower bottom surface of the spring support seat (357); The lower end of the lifting bracket (351) is inserted into two vertically arranged guide rods (359), and the two ends of the guide rods (359) are respectively fixed to the upper support plate (360) and the base (31), and the upper support plate (360) is fixedly connected to the base (31); A screw rod (361) arranged parallel to the guide rod (359) is rotatably connected between the upper support plate (360) and the base (31) via a bearing, and the lower end of the lifting bracket (351) is screwed onto the screw rod (361); a servo motor (362) for driving the screw rod (361) to rotate is fixed to the base (31).

2. The automatic equipment for punching stator and rotor sheets according to claim 1, characterized in that: The receiving cylinder (32) comprises an upper conical cylinder (321), an intermediate cylinder (322) and a lower cylinder (323) which are integrally formed; the upper conical cylinder (321) is larger at the top and smaller at the bottom; the inner diameter of the intermediate cylinder (322) is arranged to be clearance-matched with the outer diameter of the rotor punching sheet (91); an electromagnet (37) is fixed on the bottom surface of the intermediate cylinder (322); the rotor punching sheet (91) can be adsorbed by the electromagnet (37); a first connecting block (324) is fixed on the inner wall of the lower cylinder (323); the first connecting block (324) is fixed on a first sliding block (326) of a linear module (325); the linear module (325) is vertically arranged and fixed in the base (31); the first sliding block (326) and the first connecting block (324) are inserted into the slot (311) of the base (31).

3. The automatic equipment for punching stator and rotor sheets according to claim 1, characterized in that: The rotor punching automatic discharging device (4) further comprises a second slider (43) fixed to the rear end of the push plate (42), the second slider (43) being slidably connected to a second guide rail (44) arranged in the left-right direction, the second slider (43) being fixed to the end of the telescopic rod of the third telescopic cylinder (45), and the third telescopic cylinder (45) and the second guide rail (44) being fixedly connected to the bottom of the lower mold (2) via a second connecting block (46); A baffle (47) is provided at the front end of the first discharge conveyor belt (41), and the baffle (47) is fixed on the frame (1); and the first discharge conveyor belt (41) is provided with a third motor (48) for driving it to transmit forward.

4. The automatic equipment for punching stator and rotor sheets according to claim 1, characterized in that: The stator punching automatic stacking device (6) comprises a material receiving core shaft (61) arranged in front of the second conveyor belt (51), the material receiving core shaft (61) is internally formed with a driving cavity (611) with a lower opening, the side wall of the driving cavity (611) is formed with a plurality of rectangular grooves (612) evenly distributed around the circumference, each rectangular groove (612) is sleeved with a telescopic block (62) matched therewith, the outer end of the telescopic block (62) is fixed with a first magnet block (80), the inner end of the telescopic block (62) is formed with a first inclined surface (621) pressed against a corresponding second inclined surface (631) on the driving block (63), the second inclined surface (631) is inlaid with a second magnet block (64), and the telescopic block (62) can be adsorbed by the second magnet block (64); the lower end of the driving block (63) is rotated through a bearing A connecting sleeve (65) is connected, and the connecting sleeve (65) is fixed to the end of the telescopic rod of the fourth telescopic cylinder (66); the fourth telescopic cylinder (66) is fixed on the base shaft (67), and the base shaft (67) is fixed on the frame (1); the material receiving core shaft (61) is hinged on the base shaft (67) through a bearing; a fourth motor (68) is fixed on the base shaft (67), and a second gear (69) is fixed to the motor shaft of the fourth motor (68), and the second gear (69) is meshed with a second inner gear ring (70), and the second inner gear ring (70) is fixed to the material receiving core shaft (61); a spring support plate (81) is fixed to the inner end of the telescopic block (62), and the spring support plate (81) is fixed to one end of the second compression spring (82), and the other end of the second compression spring (82) is fixed to the inner wall of the driving chamber (611); The upper end of the driving block (63) is formed with an auxiliary guide rod (632) coaxially arranged with the connecting sleeve (65), the auxiliary guide rod (632) is inserted into the inner ring of the positioning bearing (83), and the positioning bearing (83) is fixed on the material receiving core shaft (61); A positioning strip (71) is provided on one side of the material receiving core shaft (61), and the cross section of the positioning strip (71) matches the positioning groove (921) of the stator punching sheet (92); The lower end of the positioning bar (71) is fixed on the bottom block (72), and the bottom block (72) is fixed on the frame (1).

5. The automatic stator and rotor punching equipment according to claim 4, characterized in that: The upper end of the material receiving mandrel (61) is formed with a rounded corner (613); The uppermost end of the receiving mandrel (61) is lower than the height of the upper half of the second conveyor belt (51); Guide plates (73) are provided on both sides of the front end of the second conveyor belt (51), and the two guide plates (73) form a "Y"-shaped channel and are fixed on the frame (1); The second conveyor belt (51) is provided with a fifth motor (52) for driving the second conveyor belt (51) to transport forward.

6. The automatic stator and rotor punching equipment according to claim 4, characterized in that: A vibration block (74) is provided above the positioning bar (71); the profile of one end of the vibration block (74) close to the material receiving core shaft (61) is consistent with the profile of the cross section of the positioning bar (71); the other end of the vibration block (74) is formed with an L-shaped plate (741); a tension spring (75) is fixed on the L-shaped plate (741); the upper end of the tension spring (75) is fixed to the extension block (711) at the upper end of the positioning bar (71); a first waist-shaped hole (742) is formed on the L-shaped plate (741); a first limiting rod (76) is sleeved in the first waist-shaped hole (742); the inner end of the first limiting rod (76) is fixed to the extension block (711); and the outer end of the first limiting rod (76) is fixed with a blocking portion (77); A second waist-shaped hole (712) is formed on the back of the positioning strip (71), a step column (78) is sleeved in the second waist-shaped hole (712), and the step column (78) is fixed on the L-shaped plate (741); When the step surface of the step column (78) is pressed against the back surface of the positioning strip (71), the contour of one end of the vibration block (74) close to the material receiving mandrel (61) coincides with the positioning strip (71) in a top view direction; A vibrator (79) is fixed to the bottom of the L-shaped plate (741).

7. The automatic stator and rotor punching equipment according to claim 6, characterized in that: The maximum gap between the lower bottom surface of the vibration block (74) and the upper end of the positioning bar (71) is smaller than the thickness of the stator punching sheet (92).

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