Stamping die for producing and processing motor iron core

Abstract

The invention provides a stamping die for producing and machining a motor iron core, and belongs to the technical field of stamping dies. Comprising a base, four guide columns are vertically arranged on the base, the tops of the four guide columns are jointly connected with a top plate, a hydraulic cylinder is arranged at the top of the top plate, a sliding plate is arranged at the end of a telescopic shaft of the hydraulic cylinder, and a punching die assembly is arranged in the middle of the lower surface of the sliding plate; a screw rod is further vertically arranged on the lower surface of the sliding plate, a spiral groove is formed in the screw rod, a spiral ring is rotationally arranged on the screw rod, a plug pin inserted into the spiral groove is arranged in the spiral ring, the driving gear is rotationally arranged on the lower die base, the side of the driving gear is meshed with a driven gear, and the driven gear is rotationally arranged below a discharging hole of the lower die base; a charging barrel is connected above the driven gear, and semi-circular truncated cones which coincide with the semi-circular openings of the silicon steel sheets are uniformly distributed on the inner wall of the charging barrel; all the silicon steel sheets are overlapped in a staggered manner, so that accumulated errors caused by non-uniform thicknesses of silicon steel plates are overcome.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies, and in particular relates to a stamping die for producing and processing motor cores. Background Art

[0002] As the core component of the motor, the motor core plays a critical role in the efficient conversion of electrical and mechanical energy. Its primary function is to create a magnetic circuit and enhance magnetic field strength, thereby achieving efficient conversion between electrical and mechanical energy. By concentrating and directing magnetic flux, the motor core effectively reduces eddy current and hysteresis losses, thereby improving motor efficiency. Furthermore, it also supports the windings and ensures the stability of the motor structure. Motor cores are typically made of stacked, ring-shaped silicon steel sheets. Slots for accommodating windings are evenly distributed along the inner walls of the sheets. Several holes are evenly distributed throughout the center of the sheets, playing a crucial role in heat dissipation, weight reduction, and optimizing the magnetic circuit. Semicircular openings are located on the outer walls of the sheets for positioning. In the existing technology, silicon steel sheets are usually punched out from silicon steel sheets using a stamping die, and then stacked and assembled in a certain order. However, due to the thickness error of the silicon steel sheets in the width direction, directly stacking the stamped silicon steel sheets will lead to cumulative errors. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a stamping die for the production and processing of motor cores, which can offset and stack silicon steel sheets to overcome the influence of thickness error.

[0004] The technical solution adopted to solve the above technical problems is a stamping die for the production and processing of motor cores, including a base, four guide pillars are vertically arranged on the base, the tops of the four guide pillars are commonly connected to a top plate, a hydraulic cylinder is provided on the top of the top plate, the telescopic shaft of the hydraulic cylinder passes through the top plate, a slide is provided at the end of the telescopic shaft of the hydraulic cylinder, the slide forms a sliding fit with the guide pillars, and a punch assembly is provided in the middle of the lower surface of the slide; a base is provided on the upper surface of the base, a lower die seat is provided on the upper part of the base, a screw is also vertically provided on the lower surface of the slide, a spiral groove is provided on the screw, a screw ring is provided on the screw for rotation, and a screw ring is provided inside the screw ring A pin is inserted into the spiral groove, and the outer wall of the spiral ring is connected to the inner ring of the one-way bearing. The outer ring of the one-way bearing is connected to the driving gear, and the driving gear is rotatably arranged on the lower die base. A driven gear is engaged with the side of the driving gear. A discharge hole is provided in the lower die base, and the driven gear is rotatably arranged below the discharge hole of the lower die base. A barrel is connected above the driven gear, and the barrel is rotatably arranged in the discharge hole. Semicircular tables that coincide with the semicircular mouth of the silicon steel sheet are evenly distributed on the inner wall of the barrel; an electric cylinder is provided on the base below the discharge hole, and a material tray for receiving the silicon steel sheet is rotatably provided on the telescopic shaft of the electric cylinder.

[0005] Furthermore, the upper surface of the driving gear is evenly distributed with limiting grooves having the same number as the semicircular openings of the silicon steel sheet, and the lower die base is provided with limiting holes that coincide with the limiting grooves, and a limiting ball for clamping the limiting groove is placed in the limiting hole, and a screw is screwed into the top of the limiting hole, and a spring is connected between the limiting ball and the screw.

[0006] Furthermore, the die assembly includes an upper die base fixedly arranged under the slide, the lower surface of the upper die base is slidably arranged on multiple guide rods, the lower ends of the guide rods are commonly connected to the pressure plate, and the outer sleeve of the guide rods is provided with a spring 2, and the two ends of the spring 2 are respectively connected to the upper die base and the pressure plate.

[0007] Furthermore, the lower surface of the upper die base is provided with a circular die, a combination die and a cutting die in sequence along the direction from the front side to the rear side of the lower die base, and the lower surface of the upper die base is provided with a process pressure rod assembly, the process pressure rod assembly is composed of pressure rod one, pressure rod two and pressure rod three evenly arranged below the upper die base, and pressure rod one, pressure rod two and pressure rod three have the same shape, the circular die, combination die, cutting die and process pressure rod assembly all penetrate the pressure plate, and the lower die base is provided with grooves corresponding to the circular die, combination die, cutting die and process pressure rod assembly.

[0008] Furthermore, two slides are slidably provided on the base, a baffle for blocking the movement of the slides is provided on the lower mold base, slides are provided on both sides of the slides, the slides form a sliding fit with the slide grooves of the rocker arm, the rocker arm is rotatably provided on the base, and the rotating shaft of the rocker arm is connected to the inner ring of the one-way bearing 2, the outer ring of the one-way bearing 2 is connected to a swing gear, and a tooth plate is engaged on the side of the swing gear, and the tooth plate is fixed on the slide plate.

[0009] Furthermore, a slide rod is provided on the top of the slide seat, and a feed table for lifting the silicon steel plate is slidingly provided on the slide rod. A spring three is provided on the outside of the slide rod, and the two ends of the spring three are respectively connected to the slide seat and the feed table.

[0010] Furthermore, a cylinder is provided in the middle of the feeding platform, and a telescopic shaft of the cylinder passes through the top of the feeding platform.

[0011] Furthermore, two insertion rods are provided on the side of the slide seat, the insertion rods are inserted into the lower die seat, and a spring four is provided on the outside of the insertion rods, and the two ends of the spring four are respectively connected to the lower die seat and the slide seat.

[0012] The beneficial effects of the present invention compared with the prior art are: (1) During the rising process of the slide of the present invention, the screw rises synchronously with the slide, and the screw drives the spiral ring to rotate in the positive direction, so the spiral ring drives the inner ring of the one-way bearing to rotate in the positive direction, and the outer ring of the one-way bearing rotates in the positive direction synchronously, and then the power is transmitted through the driving gear and the driven gear, so that the barrel also rotates. The rotation angle of the barrel is equal to the central angle between the two semi-circular cones. The barrel rotates synchronously with the silicon steel sheets on the material tray, and the material tray also rotates on the end of the electric cylinder. Therefore, when the next silicon steel sheet falls into the barrel, it will be misaligned and superimposed with the previous silicon steel sheet. By repeating the above process, all silicon steel sheets can be staggered and superimposed, thereby overcoming the cumulative error caused by the uneven thickness of the silicon steel sheets; (2) the slide plate of the present invention drives the tooth plate to descend synchronously, the tooth plate drives the swing gear to rotate forward, the swing gear drives the outer ring of the one-way bearing 2 to rotate forward, and the inner ring of the one-way bearing 2 rotates synchronously, so the rocker arm rotates, the slide slides in the slide groove, the slide seat slides toward the rear side of the lower die seat, and the spring 4 is compressed; the slide seat moves synchronously with the slide rod and the feed table, and the feed table lifts the silicon steel sheet and moves toward the rear side of the lower die seat, thereby automatically completing the feeding process of the silicon steel sheet. During this process, the silicon steel sheet does not contact the surface of the lower die seat, thus preventing the lower surface of the silicon steel sheet from being scratched; (3) The present invention stamps the silicon steel sheet in multiple times, thus preventing the silicon steel sheet from cracking or wrinkling due to multi-directional stress in a short period of time; (4) When the driving gear of the present invention rotates, the limiting ball slides out of the limiting groove and enters the limiting hole. Once the spring is compressed, the angle of rotation of the driving gear is equal to the angle of rotation of the barrel, so the limiting groove and the limiting ball overlap again. Once the spring provides elastic force, the limiting ball is re-engaged in the limiting groove below, so that the driving gear can be stably kept stationary. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0014] Figure 2 It is a schematic structural diagram of the placement of silicon steel plates of the present invention.

[0015] Figure 3It is a structural schematic diagram of the base and the lower mold base of the present invention.

[0016] Figure 4 It is a structural schematic diagram of the barrel installation of the present invention.

[0017] Figure 5 It is a schematic structural diagram of the spiro ring of the present invention.

[0018] Figure 6 It is a structural schematic diagram of the driving gear and the driven gear of the present invention.

[0019] Figure 7 It is a structural schematic diagram of the limiting groove of the present invention.

[0020] Figure 8 It is a structural schematic diagram of the material tray installation of the present invention.

[0021] Figure 9 yes Figure 7 A partial enlarged view of point A in the middle.

[0022] Figure 10 It is a structural schematic diagram of the upper die base of the present invention.

[0023] Figure 11 It is a structural schematic diagram of the process pressure rod assembly of the present invention.

[0024] Figure 12 It is a structural schematic diagram of the slide installation of the present invention.

[0025] Figure 13 yes Figure 12 A partial enlarged view of point B in the middle.

[0026] Reference numerals: 1-silicon steel sheet; 101-semicircular opening; 102-middle hole; 103-grooved opening; 2-base; 3-guide column; 4-top plate; 5-hydraulic cylinder; 6-slide plate; 7-base; 8-lower die base; 801-discharging hole; 802-limiting hole; 9-screw; 901-spiral groove; 10-screw ring; 1001-latch pin; 11-one-way bearing 1; 12-driving gear; 1201-limiting groove; 13-driven gear; 14-barrel; 1401-semicircular table; 15-electric cylinder; 16-feeding tray; 17-limiting ball; 18-spring 1; 19-screw; 20-upper die base; 21-guide rod; 22-pressing plate; 23-spring 2; 24-circular punch; 25-combination punch; 26-cutting punch; 27-process pressure rod assembly; 2701-pressure rod 1; 2702-pressure rod 2; 2703-pressure rod 3; 28-slide; 29-baffle; 30-slide; 31-rocker; 3101-chute; 32-one-way bearing 2; 33-swing gear; 34-tooth plate; 35-slide; 36-feeding table; 37-spring 3; 38-cylinder; 39-insert rod; 40-spring 4; 41-silicon steel plate; 4101-process hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figures 1 to 13 As shown, a stamping die for the production and processing of motor cores includes a base 2, four guide pillars 3 are vertically provided on the base 2, the tops of the four guide pillars 3 are commonly connected to a top plate 4, a hydraulic cylinder 5 is provided on the top of the top plate 4, the telescopic shaft of the hydraulic cylinder 5 passes through the top plate 4, a slide 6 is provided at the end of the telescopic shaft of the hydraulic cylinder 5, the slide 6 forms a sliding fit with the guide pillars 3, and a die assembly is provided in the middle of the lower surface of the slide 6.

[0029] Specifically, the hydraulic cylinder 5 provides driving force to drive the slide plate 6 to move up and down along the guide column 3. The die assembly punches the silicon steel sheet 1 from the silicon steel plate 41. The silicon steel sheet 1 has a semicircular opening 101 on the outside, a middle hole 102 in the middle, and a slot opening 103 on the inside.

[0030] The upper surface of the base 2 is provided with a base 7, the upper part of the base 7 is provided with a lower die seat 8, the lower surface of the slide 6 is also vertically provided with a screw 9, a spiral groove 901 is provided on the screw 9, a screw ring 10 is rotatably provided on the screw 9, a pin 1001 is provided on the inside of the screw ring 10 to be inserted into the spiral groove 901, and the outer wall of the screw ring 10 is connected to the inner ring of the one-way bearing 11, the outer ring of the one-way bearing 11 is connected to the driving gear 12, and the driving gear 12 is rotatably provided on the lower die seat 8, and the side of the driving gear 12 is provided with a screw ring 1001. A driven gear 13 is engaged with the lower die base 8, and a discharge hole 801 is provided in the lower die base 8. The driven gear 13 is rotatably arranged below the discharge hole 801 of the lower die base 8. A barrel 14 is connected to the upper part of the driven gear 13, and the barrel 14 is rotatably arranged in the discharge hole 801. Semicircular stages 1401 that coincide with the semicircular opening 101 of the silicon steel sheet 1 are evenly distributed on the inner wall of the barrel 14; an electric cylinder 15 is provided on the base 2 below the discharge hole 801, and a material tray 16 for receiving the silicon steel sheet 1 is rotatably provided on the telescopic shaft of the electric cylinder 15.

[0031] When the inner ring of the one-way bearing 11 rotates forward, the outer ring of the one-way bearing 11 rotates forward synchronously; when the inner ring of the one-way bearing 11 rotates backward, the outer ring of the one-way bearing 11 does not rotate.

[0032] Specifically, when the slide plate 6 is descending, the screw rod 9 descends synchronously with the slide plate 6, and the pin 1001 slides in the spiral groove 901, so the spiral ring 10 rotates, and the spiral ring 10 causes the inner ring of the one-way bearing 11 to rotate in the opposite direction, and the outer ring of the one-way bearing 11 does not rotate, so the driving gear 12, the driven gear 13 and the barrel 14 remain stationary, and the silicon steel sheet 1 punched out from the silicon steel plate 41 falls into the barrel 14, the semicircular table 1401 is stuck in the semicircular mouth 101, and the silicon steel sheet 1 falls onto the tray 16. As the slide 6 rises, the screw 9 rises synchronously with the slide 6, and the screw 9 drives the spiral ring 10 to rotate in the forward direction. Therefore, the spiral ring 10 rotates the inner ring of the one-way bearing 11 in the forward direction, and the outer ring of the one-way bearing 11 rotates in the forward direction synchronously. Then, the power is transmitted through the driving gear 12 and the driven gear 13, causing the barrel 14 to rotate. The angle of rotation of the barrel 14 is equal to the central angle between the two semi-circular cones 1401. The barrel 14 rotates synchronously with the silicon steel sheet 1 on the tray 16. The tray 16 also rotates on the end of the electric cylinder 15. Therefore, when the next silicon steel sheet 1 falls into the barrel 14, it will be offset and stacked with the previous silicon steel sheet 1. Repeating the above process can make all the silicon steel sheets 1 staggered and stacked, thereby overcoming the cumulative error caused by the uneven thickness of the silicon steel plate 41. When the total thickness of the silicon steel sheets 1 on the tray 16 is equal to the thickness of the iron core, the telescopic shaft of the electric cylinder 15 is retracted to lower the tray 16 to the bottom of the base 7, and all the silicon steel sheets 1 can be taken out.

[0033] The upper surface of the driving gear 12 is evenly distributed with limiting grooves 1201 having the same number as the semicircular openings 101 of the silicon steel sheet 1. The lower die base 8 is provided with limiting holes 802 that coincide with the limiting grooves 1201. The limiting holes 802 are placed with limiting balls 17 for clamping the limiting grooves 1201. A screw 19 is screwed into the top of the limiting hole 802, and a spring 18 is connected between the limiting ball 17 and the screw 19.

[0034] Specifically, when the driving gear 12 rotates, the limiting ball 17 slides out of the limiting groove 1201, and the limiting ball 17 enters the limiting hole 802. The spring 18 is compressed, and the rotation angle of the driving gear 12 is equal to the rotation angle of the barrel 14. Therefore, the limiting groove 1201 and the limiting ball 17 are re-overlapped. The spring 18 provides elastic force to make the limiting ball 17 re-engage in the limiting groove 1201 below, so that the driving gear 12 can be stably kept stationary, even if the semicircular table 1401 on the barrel 14 is aligned with the semicircular opening 101 of the silicon steel sheet 1.

[0035] The die assembly includes an upper die base 20 fixedly arranged below the slide 6, and the lower surface of the upper die base 20 is slidably arranged on multiple guide rods 21. The lower ends of the guide rods 21 are commonly connected to a pressing plate 22. The outer sleeve of the guide rods 21 is provided with a spring 23, and the two ends of the spring 23 are respectively connected to the upper die base 20 and the pressing plate 22.

[0036] The lower surface of the upper die base 20 is provided with a circular die 24, a combination die 25 and a cutting die 26 in sequence along the direction from the front side to the rear side of the lower die base 8, and the lower surface of the upper die base 20 is provided with a process pressure rod assembly 27. The process pressure rod assembly 27 is composed of pressure rod one 2701, pressure rod two 2702 and pressure rod three 2703 evenly arranged below the upper die base 20, and pressure rod one 2701, pressure rod two 2702 and pressure rod three 2703 have the same shape. The circular die 24, combination die 25, cutting die 26 and process pressure rod assembly 27 all penetrate the pressure plate 22, and the lower die base 8 is provided with grooves corresponding to the circular die 24, combination die 25, cutting die 26 and process pressure rod assembly 27.

[0037] Specifically, when the slide plate 6 moves downward, the upper die seat 20 and the pressing plate 22 descend synchronously. After the pressing plate 22 presses the silicon steel plate 41 onto the lower die seat 8, the slide plate 6 and the upper die seat 20 continue to move downward, the pressing plate 22 no longer moves, the guide rod 21 slides on the upper die seat 20, the spring 23 is compressed, the circular punch 24, the combination punch 25, the cutting punch 26 and the process pressure rod assembly 27 are inserted into the lower die seat 8 to punch the silicon steel plate 41. Among them, the shape punched by the circular punch 24 is the circular hole corresponding to the semicircular opening 101, the shape punched by the combination punch 25 is the middle hole 102 and the slot-shaped opening 103, and the cutting punch 26 punches along the circular hole corresponding to the semicircular opening 101, so that the silicon steel sheet 1 can be punched off the silicon steel plate 41. By punching multiple times, the silicon steel plate 41 can be prevented from cracking and wrinkling due to multi-directional stress in a short period of time. The shape of the punched pressure rod 1 2701 is the process hole 4101 , which serves to position the silicon steel plate 41 . The pressure rods 2702 and 3 2703 are inserted downward into the punched process hole 4101 .

[0038] Two slides 28 are slidably mounted on the base 7. A baffle 29 is provided on the lower die base 8 to block the movement of the slides 28. Slides 30 are provided on either side of the slides 28. These slides 30 form a sliding engagement with the groove 3101 of the rocker arm 31. The rocker arm 31 is rotatably mounted on the base 7. The rotating shaft of the rocker arm 31 is connected to the inner race of a second one-way bearing 32. The outer race of the second one-way bearing 32 is connected to a swing gear 33. A toothed plate 34 engages the side of the swing gear 33. The toothed plate 34 is fixed to the slide plate 6. The operating principle of the second one-way bearing 32 is the same as that of the first one-way bearing 11.

[0039] A slide rod 35 is provided on the top of the slide 28, and a feed table 36 for lifting the silicon steel plate 41 is slidingly provided on the slide rod 35. A spring 37 is provided on the outside of the slide rod 35, and the two ends of the spring 37 are respectively connected to the slide 28 and the feed table 36.

[0040] A cylinder 38 is provided in the middle of the feeding platform 36 , and a telescopic shaft of the cylinder 38 passes through the top of the feeding platform 36 .

[0041] Two insertion rods 39 are provided on the side of the slide 28, and the insertion rods 39 are inserted into the lower mold base 8, and a spring four 40 is provided on the outside of the insertion rods 39, and the two ends of the spring four 40 are respectively connected to the lower mold base 8 and the slide 28.

[0042] Specifically, when the slide plate 6 is in the upper position, the tooth plate 34 and the swing gear 33 are in meshing state, and the slide 28 is in contact with the baffle 29; the spring three 37 is in an extended state, that is, the feed table 36 is in the upper position, and the feed table 36 lifts the silicon steel plate 41 higher than the upper surface of the lower mold base 8; the telescopic shaft of the cylinder 38 is in an extended state, and the telescopic shaft of the cylinder 38 extends from the feed table 36 and is inserted into the process hole 4101 below the pressure rod 2701. When the telescopic shaft of the hydraulic cylinder 5 is extended and the slide plate 6 moves downward, the tooth plate 34 is driven to descend synchronously, and the tooth plate 34 drives the swing gear 33 to rotate forward, and the swing gear 33 drives the outer ring of the one-way bearing 2 32 to rotate forward, and the inner ring of the one-way bearing 2 32 rotates synchronously, so the rocker arm 31 rotates, the slide 30 slides in the slide groove 3101, and the slide seat 28 slides toward the rear side of the lower die base 8, and the spring four 40 is compressed; the slide seat 28 moves synchronously with the slide rod 35 and the feed table 36, and the feed table 36 lifts the silicon steel plate 41 to move toward the rear side of the lower die base 8. During this process, the silicon steel plate 41 does not contact the surface of the lower die base 8, so as to avoid scratches on the lower surface of the silicon steel plate 41.

[0043] The telescopic shaft of the hydraulic cylinder 5 continues to extend, the slide plate 6 continues to move downward, the pressing plate 22 contacts the silicon steel plate 41, and the pressing plate 22 presses the feed table 36 to move downward along the slide rod 35. The spring three 37 is compressed to make the top of the feed table 36 flush with the top of the lower die base 8, and the pressure rod two 2702 is inserted into the process hole 4101 below it, and the telescopic shaft of the cylinder 38 contracts, and the telescopic shaft of the cylinder 38 is separated from the process hole 4101.

[0044] The slide plate 6 continues to move downward to the lower position. During this process, the pressing plate 22 presses the silicon steel plate 41 onto the top of the lower die base 8 and does not move. The upper die base 20 moves downward along the guide rod 21. The circular punch 24, the combination punch 25, the cutting punch 26, and the process pressure rod assembly 27 extend from the pressing plate 22 and extend into the lower die base 8 to punch the silicon steel plate 41. The pressure rod 1 2701 of the process pressure rod assembly 27 punches a new process hole 4101 in the silicon steel plate 41. At the same time, the tooth plate 34 and the swing gear 33 separate, and the spring 40 drives the slide 28 back to contact with the baffle 29. At this time, the telescopic shaft of the cylinder 38 is located below the new process hole 4101.

[0045] As slide plate 6 moves to the upper position, toothed plate 34 drives swing gear 33 to rotate in the opposite direction, causing the outer ring of one-way bearing 2 32 to rotate in the opposite direction. This causes slide 28 to remain in contact with baffle 29 and prevent movement. Simultaneously, press plate 22 separates from feed platform 36, and spring 3 37 provides power to propel feed platform 36 back to the upper position. Feed platform 36 lifts silicon steel plate 41, and the telescopic shaft of cylinder 38 extends and inserts into the new process hole 4101.

[0046] Working principle: When the present invention is working continuously, the telescopic shaft of the electric cylinder 15 is in an extended state, and the material tray 16 is inside the barrel 14.

[0047] At the beginning of a cycle, the telescopic shaft of the hydraulic cylinder 5 is in a retracted state, while the slide plate 6 is in the upper position, the tooth plate 34 and the swing gear 33 are in meshing state, and the slide 28 is in contact with the baffle 29; the spring three 37 is in an extended state, that is, the feed table 36 is in the upper position, and the feed table 36 lifts the silicon steel plate 41 higher than the upper surface of the lower die base 8; the telescopic shaft of the cylinder 38 is in an extended state, and the telescopic shaft of the cylinder 38 extends from the feed table 36 and is inserted into the process hole 4101 below the pressure rod 2701.

[0048] The hydraulic cylinder 5 is activated, causing the telescopic shaft of the hydraulic cylinder 5 to extend, driving the slide plate 6 to move downward along the guide column 3. The slide plate 6 drives the gear plate 34 to descend synchronously, and the gear plate 34 drives the swing gear 33 to rotate forward. The swing gear 33 drives the outer ring of the one-way bearing 32 to rotate forward, and the inner ring of the one-way bearing 32 rotates synchronously. As a result, the swing rod 31 rotates, the slide 30 slides in the slide groove 3101, and the slide 28 slides toward the rear side of the lower die base 8. The spring 40 is compressed; the slide 28 moves synchronously with the slide rod 35 and the feed table 36. The feed table 36 lifts the silicon steel plate 41 and moves toward the rear side of the lower die base 8, thus automatically completing the feeding process of the silicon steel plate 41. During this process, the silicon steel plate 41 does not contact the surface of the lower die base 8, preventing the lower surface of the silicon steel plate 41 from being scratched.

[0049] The telescopic shaft of the hydraulic cylinder 5 continues to extend, the slide plate 6 continues to move downward, the pressing plate 22 contacts the silicon steel plate 41, and the pressing plate 22 presses the feed table 36 to move downward along the slide rod 35. The spring three 37 is compressed to make the top of the feed table 36 flush with the top of the lower die base 8, and the pressure rod two 2702 is inserted into the process hole 4101 below it, and the telescopic shaft of the cylinder 38 contracts, and the telescopic shaft of the cylinder 38 is separated from the process hole 4101.

[0050] The slide plate 6 continues to move downward to the lower position. During this process, the pressing plate 22 presses the silicon steel plate 41 above the lower die base 8 and does not move. The upper die base 20 moves downward along the guide rod 21, and the pressing plate 22 no longer moves. The guide rod 21 slides on the upper die base 20, and the spring 23 is compressed. The circular die 24, the combination die 25, the cutting die 26 and the process pressure rod assembly 27 extend from the pressing plate 22. At the same time, the circular die 24, the combination die 25, the cutting die 26 and the process pressure rod assembly 27 are inserted into the corresponding grooves of the lower die base 8 to punch the silicon steel plate 41. Among them, the shape punched by the circular punch 24 is the circular hole corresponding to the semicircular opening 101; the shape punched by the combination punch 25 is the middle hole 102 and the slot-shaped opening 103; the cutting die 26 punches along the circular hole corresponding to the semicircular opening 101, so that the silicon steel sheet 1 can be punched off the silicon steel plate 41 and dropped into the barrel 14, the semicircular table 1401 is stuck in the semicircular opening 101, and the silicon steel sheet 1 falls onto the material tray 16. Punching in multiple times can avoid the silicon steel plate 41 from cracking and wrinkling due to multi-directional stress in a short time. The first pressure rod 2701 of the process pressure rod assembly 27 punches a new process hole 4101 in the silicon steel plate 41. The process hole 4101 serves to position the silicon steel plate 41, preparing for the next cycle for the telescopic shaft of the cylinder 38 to be inserted into the process hole 4101. The second pressure rod 2702 and the third pressure rod 2703 are inserted downward into the punched process hole 4101. Simultaneously, during this process, the tooth plate 34 and the swing gear 33 separate, and the fourth spring 40 drives the slide 28 back to the position of contact with the baffle 29. At this time, the telescopic shaft of the cylinder 38 is located below the new process hole 4101.

[0051] Hydraulic cylinder 5 is activated in the reverse direction, causing its telescopic shaft to retract and driving slide 6 upward along guide post 3. Screw 9 rises synchronously with slide 6, driving screw ring 10 in forward rotation. This causes screw ring 10 to rotate forward, leading to the inner ring of one-way bearing 11, which in turn rotates the outer ring of one-way bearing 11 in a synchronous forward rotation. This power is then transmitted through driving gear 12 and driven gear 13, causing barrel 14 to rotate as well. The angle of rotation of barrel 14 is equal to the central angle between the two semi-circular cones 1401. Barrel 14 rotates synchronously with the silicon steel sheet 1 on tray 16. Tray 16 also rotates on the end of electric cylinder 15. Therefore, when the next silicon steel sheet 1 falls into barrel 14, it will be offset and stacked with the previous one. Simultaneously, during this process, gear plate 34 drives swing gear 33 in reverse rotation, leading to the outer ring of one-way bearing 2 32 in a synchronous forward rotation. Therefore, slide 28 remains in contact with baffle 29 and does not move. At the same time, the pressing plate 22 is separated from the feeding table 36, and the spring 37 provides power to drive the feeding table 36 to rise to the upper position again. The feeding table 36 lifts the silicon steel plate 41, and the telescopic shaft of the cylinder 38 extends and is inserted into the new process hole 4101. The cycle returns to the starting state.

[0052] By repeating the above process, all silicon steel sheets 1 can be stacked in an offset manner, thereby overcoming the cumulative error caused by the uneven thickness of the silicon steel plates 41. When the total thickness of the silicon steel sheets 1 on the material tray 16 equals the thickness of the iron core, the telescopic shaft of the electric cylinder 15 is retracted, causing the material tray 16 to descend to the bottom of the base 7, and all the silicon steel sheets 1 can be removed.

[0053] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. A stamping die for producing and processing motor cores, comprising a base (2), characterized in that: Four guide columns (3) are vertically provided on the base (2), the tops of the four guide columns (3) are commonly connected to a top plate (4), a hydraulic cylinder (5) is provided on the top of the top plate (4), a telescopic shaft of the hydraulic cylinder (5) passes through the top plate (4), a slide plate (6) is provided at the end of the telescopic shaft of the hydraulic cylinder (5), the slide plate (6) forms a sliding fit with the guide columns (3), and a die assembly is provided in the middle of the lower surface of the slide plate (6); The upper surface of the base (2) is provided with a base (7), the upper part of the base (7) is provided with a lower mold base (8), the lower surface of the slide (6) is also vertically provided with a screw (9), the screw (9) is provided with a spiral groove (901), the screw (9) is rotatably provided with a screw ring (10), the interior of the screw ring (10) is provided with a pin (1001) inserted into the spiral groove (901), and the outer wall of the screw ring (10) is connected to the inner ring of the one-way bearing (11), the outer ring of the one-way bearing (11) is connected to the driving gear (12), and the main The driven gear (12) is rotatably mounted on the lower die base (8), and a driven gear (13) is meshed with the side of the driving gear (12). A discharge hole (801) is provided in the lower die base (8), and the driven gear (13) is rotatably mounted below the discharge hole (801) of the lower die base (8). A barrel (14) is connected to the upper portion of the driven gear (13), and the barrel (14) is rotatably mounted in the discharge hole (801). Semicircular terraces (1401) that overlap with the semicircular opening (101) of the silicon steel sheet (1) are evenly distributed on the inner wall of the barrel (14); An electric cylinder (15) is provided on the base (2) below the discharge hole (801), and a material tray (16) for receiving the silicon steel sheet (1) is rotatably provided on the telescopic shaft of the electric cylinder (15).

2. The stamping die for producing and processing a motor core according to claim 1, characterized in that: The upper surface of the driving gear (12) is evenly distributed with limiting grooves (1201) having the same number as the semicircular opening (101) of the silicon steel sheet (1). The lower die base (8) is provided with a limiting hole (802) that coincides with the limiting groove (1201). A limiting ball (17) for clamping the limiting groove (1201) is placed in the limiting hole (802). A screw (19) is screwed into the upper part of the limiting hole (802). A spring (18) is connected between the limiting ball (17) and the screw (19).

3. The stamping die for producing and processing a motor core according to claim 2, characterized in that: The die assembly comprises an upper die base (20) fixedly arranged below the slide plate (6); a lower surface of the upper die base (20) is slidably arranged on a plurality of guide rods (21); the lower ends of the guide rods (21) are commonly connected to a pressing plate (22); a second spring (23) is sleeved on the outer portion of the guide rods (21); and the two ends of the second spring (23) are respectively connected to the upper die base (20) and the pressing plate (22).

4. The stamping die for producing and processing a motor core according to claim 3, characterized in that: The lower surface of the upper die base (20) is provided with a circular die (24), a combination die (25) and a cutting die (26) in sequence along the direction from the front side to the rear side of the lower die base (8), and the lower surface of the upper die base (20) is provided with a process pressure rod assembly (27), the process pressure rod assembly (27) is composed of a pressure rod one (2701), a pressure rod two (2702) and a pressure rod three (2703) uniformly arranged below the upper die base (20), and the pressure rod one (2701), the pressure rod two (2702) and the pressure rod three (2703) are consistent in shape, the circular die (24), the combination die (25), the cutting die (26) and the process pressure rod assembly (27) all penetrate the pressure plate (22), and the lower die base (8) is provided with grooves corresponding to the circular die (24), the combination die (25), the cutting die (26) and the process pressure rod assembly (27).

5. The stamping die for producing and processing a motor core according to claim 4, characterized in that: Two slides (28) are slidably provided on the base (7), a baffle (29) for blocking the movement of the slide (28) is provided on the lower mold base (8), slides (30) are provided on both sides of the slide (28), the slides (30) and the slide grooves (3101) of the rocker (31) form a sliding fit, the rocker (31) is rotatably provided on the base (7), and the rotating shaft of the rocker (31) is connected to the inner ring of the one-way bearing (32), the outer ring of the one-way bearing (32) is connected to the swing gear (33), the side of the swing gear (33) is meshed with a tooth plate (34), and the tooth plate (34) is fixed on the slide plate (6).

6. The stamping die for producing and processing a motor core according to claim 5, characterized in that: A slide bar (35) is provided on the top of the slide seat (28), and a feed table (36) for lifting the silicon steel plate (41) is provided on the slide bar (35). A spring three (37) is provided on the outside of the slide bar (35), and the two ends of the spring three (37) are respectively connected to the slide seat (28) and the feed table (36).

7. The stamping die for producing and processing a motor core according to claim 6, characterized in that: A cylinder (38) is provided in the middle of the feeding platform (36), and a telescopic shaft of the cylinder (38) passes through the top of the feeding platform (36).

8. The stamping die for producing and processing a motor core according to claim 7, characterized in that: Two insertion rods (39) are provided on the side of the slide (28), and the insertion rods (39) are inserted into the lower die seat (8). The outer sleeve of the insertion rods (39) is provided with a spring four (40), and the two ends of the spring four (40) are respectively connected to the lower die seat (8) and the slide (28).

Images