A stamping die set of non-oriented silicon steel sheet for new energy vehicle driving motor

Abstract

The application relates to the technical field of silicon steel sheet processing, and particularly discloses a stamping die set of non-oriented silicon steel sheet for a new energy automobile driving motor, which comprises a base, supporting legs are fixedly installed at the top of the base at four corners, a forming table is fixedly installed at the top of the supporting legs, a lower die mechanism is arranged on the inner side of the forming table, an upper die mechanism is fixedly installed at the top of the forming table, a transmission mechanism is arranged on one side of the forming table, the upper die mechanism is matched with the transmission mechanism, a supporting mechanism is arranged, the lower die mechanism is matched with a demolding module and a conveying structure, the stamping processing whole process can realize a continuous operation mode of automatic die locking and fixing and automatic workpiece demolding and discharging, the operation steps of die processing can be simplified, the manual intervention operation links can be reduced, the stamping production operation of the silicon steel sheet can be continuously and uninterruptedly completed, and the overall processing operation speed can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of silicon steel sheet processing technology, and in particular to a stamping die set for non-oriented silicon steel sheets used in drive motors for new energy vehicles. Background Technology

[0002] Currently, in the field of silicon steel sheet stamping and forming, matching stamping dies are mostly used to complete the cutting and forming of silicon steel sheets. These stamping dies are the core processing equipment in the silicon steel sheet production line. They mainly rely on the opposing and extruding forces of the upper and lower dies to cause plastic deformation of the silicon steel sheet raw material, thereby processing silicon steel sheet workpieces that meet the specifications of motor production. In the mass production scenario of non-oriented silicon steel sheets for new energy vehicle drive motors, the processing efficiency and forming stability of the stamping dies directly determine the capacity and product yield of the entire production line. Therefore, adapting to high-precision and high-efficiency stamping dies is a core requirement for the industrial production of silicon steel sheets and a key direction for continuous optimization and improvement in the industry.

[0003] Chinese patent CN223733672U discloses a stamping die for producing silicon steel sheets, including a processing table. A column is fixedly connected to the rear side of the processing table, and a top plate is fixedly connected to the top of the column. A hydraulic cylinder is fixedly connected to the bottom of the top plate, and a lifting seat is fixedly connected to the output end of the hydraulic cylinder. An upper die body is arranged below the lifting seat, and a stamping block is fixedly connected to the bottom center of the upper die body. Clamping components are arranged in the front-back and left-right directions on the bottom of the upper die body. A limit groove is formed on the top of the processing table, and a lower die body is arranged in the limit groove. A stamping groove is formed through the top of the lower die body. The above device, through the cooperation of the lifting seat, guide column, fixed column, telescopic groove, spring, and pressure column, can clamp and fix the silicon steel sheet before stamping, preventing the silicon steel sheet from shifting and affecting the final stamping effect.

[0004] The existing stamping die structure only optimizes the clamping and positioning function of silicon steel sheets before stamping, completely lacking a targeted automatic demolding and automatic unloading structure. In actual batch stamping production, after the silicon steel sheets are stamped, they will be tightly stuck inside the stamping groove of the lower die and cannot be detached from the die on their own. The demolding and unloading operations must be completed manually or with the assistance of a robot after the machine is stopped. The gap between the entire process will occupy a lot of equipment operation time, which will significantly lengthen the single stamping cycle of the die. The equipment cannot achieve continuous and uninterrupted stamping processing, which greatly reduces the overall production efficiency of silicon steel sheet stamping processing. It is difficult to adapt to the industrial production and processing scenario of large-scale and high-efficiency silicon steel sheets for new energy motors, and there are obvious structural design limitations and production adaptability defects. Summary of the Invention

[0005] The purpose of this invention is to provide a stamping die set for non-oriented silicon steel sheets for drive motors of new energy vehicles, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a stamping die assembly for non-oriented silicon steel sheets used in drive motors of new energy vehicles, comprising a base, support legs fixedly installed at the four corners of the top of the base, a forming platform fixedly installed on the top of the support legs, a lower die mechanism provided on the inner side of the forming platform, an upper die mechanism fixedly installed on the top of the forming platform, a transmission mechanism provided on one side of the forming platform, and support mechanisms provided on both sides of the forming platform. The inner end of the support mechanism penetrates the forming platform to support the lower die mechanism. The support mechanism and the transmission mechanism are connected in a transmission manner, and the transmission mechanism and the upper die mechanism are connected in a transmission manner. The lower mold mechanism includes a groove and a drive motor. The groove is located in the middle of the forming table. Turntables are rotatably connected to both sides of the groove. A lower mold base is fixedly installed on the inner side of the turntable. A lower mold body is fixedly installed in the middle of the lower mold base. The drive motor is located in the middle of one side of the forming table. The output end of the drive motor is connected to the outer side of a turntable through a coupling. A demolding module is provided on the inner side of the lower mold base. The demolding end of the demolding module extends into the inner side of the lower mold body.

[0007] Furthermore, a gearbox is fixedly installed in the middle of the side of the molding table near the drive motor, and the drive motor is fixedly installed on the outside of the gearbox. The output end of the drive motor drives the lower mold base to rotate through the gearbox to achieve automatic demolding and material unloading.

[0008] Furthermore, the demolding module includes a circular groove, which is formed at the four corners of the bottom of the lower mold base. A return spring is fixedly connected to the inner side of the circular groove, and a sliding shaft is fixedly connected to the bottom of the return spring. A demolding component is fixedly installed at the bottom of the sliding shaft, and the demolding end of the demolding component extends through the lower mold base into the lower mold body.

[0009] Furthermore, the demolding assembly includes an inner push frame, which is fixedly connected to the bottom of the sliding shaft. Demolding ejector pins are fixedly installed on the top of the inner push frame in a ring at equal intervals. The top of the demolding ejector pins extends through the lower mold base and into the inner side of the lower mold body. A demolding top ring is fixedly installed on the top of the demolding ejector pins, and the demolding top ring is movable within the lower mold body.

[0010] Furthermore, the upper mold mechanism includes an upper mold frame, which is fixedly installed on the top of the forming table. A hydraulic cylinder is fixedly installed in the middle of the top of the upper mold frame. An upper mold base is fixedly installed through the bottom output end of the hydraulic cylinder and at the bottom of the upper mold base. An upper mold body is fixedly installed at the bottom of the upper mold base.

[0011] Furthermore, the demolding assembly also includes a crossbar, which is fixedly connected to both sides of the upper mold frame. A bending shaft is fixedly installed on the inner side of the crossbar, and an upper guide frame is fixedly installed at the bottom of the bending shaft. The bottom of the upper guide frame is arc-shaped. An arc-shaped guide plate is fixedly installed at both ends of the bottom of the inner push frame. After the lower mold base flips over, the upper guide frame presses against the arc-shaped guide plate to push the inner push frame, so as to achieve automatic demolding after flipping.

[0012] Furthermore, an arc-shaped groove is provided at the bottom edge of the arc-shaped guide plate, and guide wheels are rotatably connected to the inner side of the arc-shaped groove at equal intervals along the arc.

[0013] Furthermore, the support mechanism includes a support slot and a support side rail. The support slot is located in the middle of both sides of the lower mold base. The support side rail is fixedly connected to both sides of the forming table. A support plate is slidably connected inside the support side rail. A support block is fixedly installed at the inner end of the support plate. The support block is inserted into the support slot. A first rack is provided on one side of the support plate. The first rack is connected to the transmission mechanism.

[0014] Furthermore, the transmission mechanism includes a linkage component and a side connecting frame. The linkage component is disposed on both sides of the forming table, and the side connecting frame is fixedly connected to both sides of the upper mold base. An outer push frame is fixedly installed on the outer side of the side connecting frame, and a second rack is fixedly installed at both ends of the bottom of the outer push frame. The second rack is connected to the first rack through the linkage component. A support base is fixedly installed on one side of the upper mold base, and support plates are slidably connected to both sides of the support base. The outer side of the support plate is fixedly connected to the inner side of the outer push frame.

[0015] Furthermore, the linkage assembly includes a side groove and a side frame. The side groove is formed on both sides of the forming table. A driven spur gear is rotatably connected to the inner side of the side groove. The driven spur gear meshes with a first rack. A driven bevel gear is fixedly installed at the bottom of the driven spur gear. The side frame is fixedly connected to both sides of the forming table. A driving bevel gear is rotatably connected to the lower inner side of the side frame. The driving bevel gear meshes with the driven bevel gear. A driving spur gear is rotatably connected to the lower outer side of the side frame. The driving spur gear meshes with a second rack. A conveyor frame is fixedly installed at the top center of the base, and a conveyor belt is rotatably connected to the inner side of the conveyor frame. The conveyor belt is located directly below the lower mold body.

[0016] Compared with the prior art, the beneficial effects of the present invention are: Firstly, in this invention, during the application of this technical solution, by setting up an upper mold mechanism, the transmission mechanism and the support mechanism cooperate with each other, so that the equipment can use the mechanical power of the upper mold moving downward to complete the locking operation of the support mechanism during the silicon steel sheet stamping operation. There is no need to equip a separate drive equipment to complete the fixing operation of the lower mold base. The stamping process and the mold fixing process can be carried out simultaneously, thereby reducing the operation steps and operation time required for the equipment to lock the mold separately, simplifying the overall stamping operation process. At the same time, it can form an effective limit constraint on the lower mold base during the mold closing stamping stage, avoiding the situation of mold loosening and displacement during the stamping operation, and is suitable for the batch stamping production of non-oriented silicon steel sheets for new energy vehicle drive motors.

[0017] Secondly, in this invention, during the application of this technical solution, by setting up a lower mold mechanism, the demolding module and the transmission and conveying structure cooperate with each other, so that after the stamping operation is completed, the equipment can complete the demolding and unloading of the workpiece by means of mechanical linkage. The equipment does not need to stop and wait for manual or robotic arm to pick up the material. It can simultaneously complete the ejection and demolding action of the stuck workpiece during the mold flipping process. The demolded workpiece can be directly and automatically transported out through the conveyor belt, thereby shortening the overall processing time of a single workpiece and allowing the equipment to continuously carry out the stamping process, effectively improving the overall production capacity of silicon steel sheet stamping. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure in this invention; Figure 3 This is a schematic diagram of the structure viewed from below in this invention; Figure 4 This is a top view of the structure in this invention; Figure 5 This is a schematic diagram of the overall structure of the upper mold mechanism in this invention; Figure 6 This is a bottom view of the upper mold mechanism in this invention; Figure 7 This is a top view of the lower mold mechanism in this invention. Figure 8 This is a bottom view of the forming platform and lower mold mechanism in this invention. Figure 9 This is a bottom view of the lower mold mechanism in this invention. Figure 10 This is a schematic diagram of the disassembled state of the lower mold mechanism in this invention.

[0019] In the diagram: 1. Base; 2. Support leg; 3. Forming platform; 4. Lower mold mechanism; 41. Groove; 42. Drive motor; 43. Turntable; 44. Lower mold base; 45. Lower mold body; 46. Demolding module; 461. Circular groove; 462. Return spring; 463. Sliding shaft; 464. Demolding assembly; 4641. Inner push frame; 4642. Demolding ejector pin; 4643. Demolding top ring; 4644. Crossbar; 4645. Bending shaft; 4646. Upper guide frame; 4647. Arc-shaped guide plate; 4648. Arc-shaped groove; 4649. Guide wheel; 47. Gearbox; 5. Upper mold 51. Upper mold frame; 52. Hydraulic cylinder; 53. Upper mold base; 54. Upper mold body; 55. Conveyor frame; 56. Conveyor belt; 6. Transmission mechanism; 61. Linkage assembly; 611. Side groove; 612. Side frame; 613. Driven spur gear; 614. Driven bevel gear; 615. Driving bevel gear; 616. Driving spur gear; 62. Side connecting frame; 63. Outer push frame; 64. Second rack; 65. Support base; 66. Support plate; 7. Support mechanism; 71. Support slot; 72. Support side rail; 73. Support plate; 74. Support block; 75. First rack. Detailed Implementation

[0020] Example Please see Figures 1-10 In this embodiment of the invention, a stamping die assembly for non-oriented silicon steel sheets for a new energy vehicle drive motor 42 includes a base 1. Support legs 2 are fixedly installed at the four corners of the top of the base 1. A forming platform 3 is fixedly installed on the top of the support legs 2. A lower die mechanism 4 is provided on the inner side of the forming platform 3. An upper die mechanism 5 is fixedly installed on the top of the forming platform 3. A transmission mechanism 6 is provided on one side of the forming platform 3. Support mechanisms 7 are provided on both sides of the forming platform 3. The inner end of the support mechanism 7 passes through the forming platform 3 to support the lower die mechanism 4. The support mechanism 7 and the transmission mechanism 6 are connected in a transmission manner. The transmission mechanism 6 and the upper die mechanism 5 are connected in a transmission manner. The lower mold mechanism 4 includes a groove 41 and a drive motor 42. The groove 41 is located in the middle of the forming table 3. Turntables 43 are rotatably connected to both sides of the groove 41. A lower mold base 44 is fixedly installed on the inner side of the turntables 43. A lower mold body 45 is fixedly installed in the middle of the lower mold base 44. The drive motor 42 is located in the middle of one side of the forming table 3. The output end of the drive motor 42 is connected to the outer side of a turntable 43 through a coupling. A demolding module 46 is provided on the inner side of the lower mold base 44. The demolding end of the demolding module 46 extends into the inner side of the lower mold body 45. By setting the forming table 3, the upper mold mechanism 5 and the lower mold mechanism 4 to cooperate with each other, the stamping and forming of non-oriented silicon steel sheets for the new energy vehicle drive motor 42 can be completed by the punching and extrusion action of the upper mold mechanism 5 and the lower mold mechanism 4. At the same time, through the transmission action of the drive motor 42 and the turntable 43, the lower mold base 44 and the lower mold body 45 can be rotated and adjusted. After the stamping operation is completed, the orientation of the lower die body 45 can be changed, thereby providing corresponding working conditions for the subsequent workpiece removal operation. The demolding module 46 installed inside the lower die base 44 can directly act on the formed workpiece inside the lower die body 45, and can specifically eject the stamped silicon steel sheet, reducing the situation where the workpiece is stuck inside the die and cannot be removed. At the same time, relying on the linkage between the transmission mechanism 6 and the upper die mechanism 5 and the support mechanism 7 respectively, the support mechanism 7 can move synchronously with the die stamping action, so that the support mechanism 7 can provide auxiliary support and limit the lower die mechanism 4, which can limit the displacement of the lower die mechanism 4 during the silicon steel sheet stamping process, so that the stamping operation can be carried out in an orderly manner, reducing the deviation of the workpiece processing during the stamping process. Relying on the linkage operation mode of each structure, the operation steps of manually fixing the workpiece and adjusting the die posture can be eliminated, simplifying the overall processing flow of silicon steel sheet stamping.

[0021] Please see Figures 1-4 and Figures 7-10A gearbox 47 is fixedly installed in the middle of the side of the molding table 3 near the drive motor 42. The drive motor 42 is fixedly installed on the outside of the gearbox 47. The output end of the drive motor 42 drives the lower mold base 44 to rotate through the gearbox 47 to achieve automatic demolding and unloading. The demolding module 46 includes a circular groove 461, which is opened at the four corners of the bottom of the lower mold base 44. A return spring 462 is fixedly connected to the inner side of the circular groove 461. A sliding shaft 463 is fixedly connected to the bottom of the return spring 462. A demolding assembly 464 is fixedly installed at the bottom of the sliding shaft 463. The demolding end of the demolding assembly 464 extends through the lower mold base 44 and into the lower mold body 45. The demolding assembly 464 includes an inner pusher 4641. The inner push frame 4641 is fixedly connected to the bottom of the sliding shaft 463. The top of the inner push frame 4641 is fixedly installed with demolding pins 4642 arranged in a ring at equal intervals. The top of the demolding pins 4642 passes through the lower mold base 44 and extends into the inner side of the lower mold body 45. The top of the demolding pins 4642 is fixedly installed with a demolding ring 4643. The demolding ring 4643 is movable inside the lower mold body 45. The demolding assembly 464 also includes a crossbar 4644. The crossbar 4644 is fixedly connected to both sides of the upper mold base 51. The inner side of the crossbar 4644 is fixedly installed with a bending shaft 4645. The bottom of the bending shaft 4645 is fixedly installed with an upper guide frame 4646. The bottom of the upper guide frame 4646 is arc-shaped.An arc-shaped guide plate 4647 is fixedly installed at both ends of the bottom of the inner push frame 4641. After the lower mold base 44 flips, the upper guide frame 4646 presses against the arc-shaped guide plate 4647 to push the inner push frame 4641, thereby achieving automatic demolding after flipping. An arc-shaped groove 4648 is provided at the bottom edge of the arc-shaped guide plate 4647. The inner side of the arc-shaped groove 4648 is rotatably connected to guide wheels 4649 arranged at equal intervals along the arc. By setting a gearbox 47 to receive the power output of the drive motor 42, the power output state transmitted by the drive motor 42 to the turntable 43 can be adjusted during use, so as to smoothly drive the lower mold base 44 to complete the flipping action. After flipping, the lower mold base 44 works in conjunction with the demolding module 46 to complete the workpiece ejection operation. The return spring 462 installed inside the circular groove 461 is connected to the sliding shaft 463. The sliding shaft 463 is composed of the inner push frame 4641, the demolding ejector pin 4642, and the demolding top ring 4643. The demolding assembly 464, during the flipping process of the lower mold base 44, has an upper guide frame 4646 that fits against an arc-shaped guide plate 4647. A guide wheel 4649 installed inside the arc-shaped groove 4648 absorbs the sliding friction generated by the contact between the two. The upper guide frame 4646 continuously presses against the arc-shaped guide plate 4647, causing the inner push frame 4641 to move towards the lower mold body 45. Simultaneously, the inner push frame 4641 pushes the demolding ejector pin 4642 and the demolding ejector ring 4643 out from inside the lower mold body 45, ejecting the molded silicon steel sheet stuck inside the mold outwards. After the ejection operation is completed, the reset spring 462 pulls the sliding shaft 463 to retract the entire demolding assembly 464, awaiting the next round of stamping operations. The entire mechanical transmission structure relies on the mold flipping action to trigger the demolding operation, eliminating the need for additional power components to drive the demolding assembly 464. It can simultaneously complete the mold flipping and workpiece ejection processes, improving the overall stamping efficiency of the equipment.

[0022] Please see Figures 1-7The upper mold mechanism 5 includes an upper mold frame 51, which is fixedly installed on the top of the forming table 3. A hydraulic cylinder 52 is fixedly installed in the middle of the top of the upper mold frame 51. The bottom output end of the hydraulic cylinder 52 passes through the upper mold frame 51 and is fixedly installed on an upper mold base 53. An upper mold body 54 is fixedly installed at the bottom of the upper mold base 53. A conveyor frame 55 is fixedly installed in the middle of the top of the base 1. A conveyor belt 56 is rotatably connected to the inner side of the conveyor frame 55. The conveyor belt 56 is located directly below the lower mold body 45. By setting the upper mold frame 51 and the hydraulic cylinder 52 to form a complete upper mold mechanism 5, the hydraulic cylinder 52 can directly drive the upper mold base 53 and the upper mold body 54 during use. 4. Moving downwards, the lower mold body 45 completes the silicon steel sheet stamping process. When the hydraulic cylinder 52 retracts, it can drive the entire upper mold structure to rise, leaving operating space for the lower mold base 44 to flip. The conveyor frame 55 installed above the base 1, together with the conveyor belt 56, is arranged directly below the lower mold body 45. The formed silicon steel sheet ejected from the mold can fall directly onto the surface of the conveyor belt 56. The continuous operation of the conveyor belt 56 can transport the workpiece outwards, eliminating the need for staff to separately pick up the stamped silicon steel sheet. The entire structure relies on the hydraulic cylinder 52 to complete the stamping opening and closing action. With the conveyor belt 56 to receive the falling workpiece, it can quickly match the production line for processing, and the rapid transmission improves processing efficiency.

[0023] Please see Figures 1-8The support mechanism 7 includes a support slot 71 and a support side rail 72. The support slot 71 is located in the middle of both sides of the lower mold base 44. The support side rail 72 is fixedly connected to both sides of the forming table 3. A support plate 73 is slidably connected inside the support side rail 72. A support block 74 is fixedly installed at the inner end of the support plate 73 and is inserted into the support slot 71. A first rack 75 is provided on one side of the support plate 73. The first rack 75 is connected to the transmission mechanism 6. The transmission mechanism 6 includes a linkage assembly 61 and a side frame 62. The linkage assembly 61 is located on both sides of the forming table 3. The side frame 62 is fixedly connected to both sides of the upper mold base 53. An outer push frame 63 is fixedly installed on the outer side of the side frame 62. Both ends of the bottom of the outer push frame 63 are fixedly installed with... The second rack 64 is connected to the first rack 75 via a linkage assembly 61. A support base 65 is fixedly installed on one side of the upper mold frame 51. Support plates 66 are slidably connected to both sides of the support base 65. The outer side of the support plate 66 is fixedly connected to the inner side of the outer push frame 63. The linkage assembly 61 includes a side groove 611 and a side frame 612. The side groove 611 is opened on both sides of the forming table 3. A driven spur gear 613 is rotatably connected to the inner side of the side groove 611. The driven spur gear 613 meshes with the first rack 75. A driven bevel gear 614 is fixedly installed at the bottom of the driven spur gear 613. The side frame 612 is fixedly connected to both sides of the forming table 3. A driving bevel gear 615 is rotatably connected to the lower inner side of the side frame 612. 5 and driven bevel gear 614 are meshed together. The lower outer end of the side frame 612 is rotatably connected to the driving spur gear 616. The driving spur gear 616 and the second rack 64 are meshed together. By setting the support mechanism 7 and the transmission mechanism 6 to work together, the upper mold base 53 can drive the side frame 62, the outer push frame 63 and the second rack 64 to move down synchronously during use. The second rack 64 and the driving spur gear 616 form a meshing transmission. The driving spur gear 616 drives the driving bevel gear 615 to rotate synchronously. The driving bevel gear 615 meshes and drives the driven bevel gear 614 and the driven spur gear 613 to rotate. The driven spur gear 613 pushes the first rack 75 to move horizontally. The first rack 75 drives the support plate 73 to move along the support side rail 72. Sliding inward, the support block 74 at the front end of the support plate 73 inserts into the support slot 71, providing lateral support to the lower mold base 44. The support seat 65 and support plate 66 installed on the outside of the upper mold frame 51 form a vertical limit on the outer push frame 63, reducing the offset generated during the movement of the outer push frame 63. When the upper mold base 53 is lifted upward, the second rack 64 moves upward synchronously. The entire linkage assembly 61 reverses the transmission and pulls the support plate 73 outward. The support block 74 disengages from the support slot 71 and releases the limit on the lower mold base 44. The entire structure relies on the hydraulic cylinder 52 to drive the vertical stroke of the upper mold to complete the locking and unlocking of the support mechanism 7. It does not require a separate power component to control the entry and exit of the support block 74, and can simultaneously complete the two processes of stamping mold closing and mold support fixing.

[0024] The working principle of this invention is as follows: The operator places the new energy vehicle drive motor 42 to be processed onto the surface of the lower mold body 45 using a non-oriented silicon steel sheet. The equipment maintains its initial operating state. The support block 74 is inserted into the support slot 71. The support mechanism 7 completes the limiting constraint on the lower mold base 44. All components of the demolding module 46 are in the reset state, and the gears and racks of the transmission mechanism 6 remain engaged and ready. The hydraulic cylinder 52 mounted on the upper mold frame 51 inside the upper mold mechanism 5 is activated. The hydraulic cylinder 52 outputs power to drive the upper mold base 53 downwards. The upper mold base 53 simultaneously drives the upper mold body 54 downwards. The upper mold body 54 and the lower mold body 45 press against each other, and the silicon steel sheet completes the stamping operation under the impact force of the mold. During the downward movement of the upper mold base 53, the side connecting frame 62 and the outer push frame 63 are simultaneously displaced. The second rack 64 fixed at the bottom of the outer push frame 63 also moves downwards.

[0025] The second rack 64, fixed at the bottom of the pusher frame 63, is divided into an upper toothless clearance section and a lower effective engagement section on the side facing the driving spur gear 616. During the first half of the pre-molding stroke of the upper mold base 53, the effective engagement section of the second rack 64 meshes with the driving spur gear 616 inside the linkage assembly 61. The driving bevel gear 615 meshes and drives the driven bevel gear 614 to rotate. The driven bevel gear 614 drives the driven spur gear 613 to rotate synchronously. The driven spur gear 613 meshes with the first rack 75, causing the first rack 75 to move horizontally inward, pushing the support plate 73 to slide inward, causing the support block 7... 4. The upper and lower mold bodies are about to contact and enter the extreme pressure stamping stage. The drive spur gear 616 just slides into the toothless clearance section of the second rack 64, and the gear transmission is interrupted. At this time, the frictional self-locking force of the support side rail 72 keeps the support block 74 absolutely stationary, so as to avoid the stamping reaction force from damaging the moving gear set. The support block 74 and the support slot 71 cooperate to lock the lower mold base 44. The lower mold base 44 is restricted from shifting and shaking throughout the stamping operation. The locking operation is completed by the downward synchronous linkage support mechanism 7 of the upper mold mechanism 5. No additional drive components are needed to complete the lower mold base 44 fixing process.

[0026] After the stamping process is completed, the hydraulic cylinder 52 retracts, causing the upper die holder 53 and the upper die body 54 to move upward. The second rack 64 follows upward, and the entire linkage assembly 61 reverses the transmission, causing the first rack 75 to move outward. The support plate 73 slides outward, and the support block 74 disengages from the support slot 71, releasing the locking constraint of the lower die holder 44. After the upper die body 54 moves to the highest point of its stroke, the drive motor 42 is started. The drive motor 42 outputs power through the gearbox 47 to drive the turntable 43 inside the groove 41 to rotate. The turntable 43 causes the lower die holder 44 to rotate as a whole, and the lower die body 45 rotates synchronously to the downward position. During the rotation of the lower die holder 44, the arc-shaped guide plate 4647 gradually approaches the upper guide frame 4. 646, the arc-shaped guide plate 4647 and the upper guide frame 4646 are in contact with each other. The guide wheel 4649 inside the arc-shaped groove 4648 bears the sliding friction generated by the contact between the two. The upper guide frame 4646 applies a pushing force to the arc-shaped guide plate 4647. The arc-shaped guide plate 4647 drives the sliding shaft 463 to move towards the lower mold body 45. The sliding shaft 463 compresses the return spring 462 inside the circular groove 461. The sliding shaft 463 simultaneously drives the inner push frame 4641 to move. The inner push frame 4641 drives multiple sets of demolding pins 4642 and demolding rings 4643 to extend outward from inside the lower mold body 45. The molded silicon steel sheet stuck inside the lower mold body 45 is pushed out as a whole by the demolding rings 4643.

[0027] The ejected silicon steel sheet falls downwards under its own weight onto the surface of the conveyor belt 56 above the conveyor table 55. The conveyor belt 56 continues to run, transporting the formed workpiece outwards to complete the unloading process. After the unloading process is completed, the drive motor 42 reverses and drives the lower die base 44 to rotate to the horizontal stamping station. The hydraulic cylinder 52 drives the upper die mechanism 5 to completely descend and reset. The transmission mechanism 6 then links with the support mechanism 7 to lock the lower die base 44. The reset spring 462 releases the stored elastic force to pull the sliding shaft 463 to reset. The ejector pin 4642 and the ejector ring 4643 retract into the lower die base 44. After all structures return to their initial state, the equipment can resume silicon steel sheet stamping.

[0028] This technical solution relies on the upper mold mechanism 5 and the downward synchronous linkage transmission mechanism 6 and support mechanism 7 to simultaneously lock and fix the lower mold base 44 during the mold closing and stamping stage, preventing the lower mold base 44 from shaking or shifting during the stamping process. The drive motor 42, in conjunction with the gearbox 47, drives the lower mold base 44 to rotate. Combined with the mechanical pushing structure of the upper guide frame 4646 and the arc-shaped guide plate 4647, the demolding module 46 completes the ejection operation. The formed workpiece can fall directly onto the conveyor belt 56 for automatic conveying. The entire process does not require manual or robotic intervention to complete the demolding and material handling operations. After a single stamping process, the equipment only needs to start the drive motor 42 to rotate for quick demolding without stopping the machine to wait for the workpiece to be removed. Each process can be continuously connected and run in a cycle. The entire structure relies on the stamping action to synchronously complete the station locking and relies on the rotating mechanical transmission to achieve automatic demolding and material handling, reducing the waiting time between processes and shortening the entire process time for processing a single silicon steel sheet.

Claims

1. A stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42), characterized in that, Includes a base (1), with support legs (2) fixedly installed at the four corners of the top of the base (1), a forming platform (3) fixedly installed on the top of the support legs (2), a lower mold mechanism (4) provided on the inner side of the forming platform (3), an upper mold mechanism (5) fixedly installed on the top of the forming platform (3), a transmission mechanism (6) provided on one side of the forming platform (3), and support mechanisms (7) provided on both sides of the forming platform (3). The inner end of the support mechanism (7) passes through the forming platform (3) to support the lower mold mechanism (4). The support mechanism (7) and the transmission mechanism (6) are connected in a transmission manner, and the transmission mechanism (6) and the upper mold mechanism (5) are connected in a transmission manner. The lower mold mechanism (4) includes a groove (41) and a drive motor (42). The groove (41) is located in the middle of the forming table (3). Turntables (43) are rotatably connected to both sides of the groove (41). A lower mold base (44) is fixedly installed on the inner side of the turntable (43). A lower mold body (45) is fixedly installed in the middle of the lower mold base (44). The drive motor (42) is located in the middle of one side of the forming table (3). The output end of the drive motor (42) is connected to the outer side of a turntable (43) through a coupling. A demolding module (46) is provided on the inner side of the lower mold base (44). The demolding end of the demolding module (46) extends to the inner side of the lower mold body (45).

2. The stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 1, characterized in that, A gearbox (47) is fixedly installed in the middle of the side of the molding table (3) near the drive motor (42). The drive motor (42) is fixedly installed on the outside of the gearbox (47). The output end of the drive motor (42) drives the lower mold base (44) to rotate through the gearbox (47) to achieve automatic demolding and material feeding.

3. The stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 1, characterized in that, The demolding module (46) includes a circular groove (461), which is located at the four corners of the bottom of the lower mold base (44). A return spring (462) is fixedly connected to the inner side of the circular groove (461). A sliding shaft (463) is fixedly connected to the bottom of the return spring (462). A demolding assembly (464) is fixedly installed at the bottom of the sliding shaft (463). The demolding end of the demolding assembly (464) extends through the lower mold base (44) and into the lower mold body (45).

4. The stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 3, characterized in that, The demolding assembly (464) includes an inner pusher (4641), which is fixedly connected to the bottom of the sliding shaft (463). The top of the inner pusher (4641) is fixedly installed with demolding ejector pins (4642) arranged in a ring at equal intervals. The top of the demolding ejector pins (4642) extends through the lower mold base (44) and into the inner side of the lower mold body (45). The top of the demolding ejector pins (4642) is fixedly installed with a demolding top ring (4643), which moves within the lower mold body (45).

5. The stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 4, characterized in that, The upper mold mechanism (5) includes an upper mold frame (51), which is fixedly installed on the top of the forming table (3). A hydraulic cylinder (52) is fixedly installed in the middle of the top of the upper mold frame (51). The bottom output end of the hydraulic cylinder (52) passes through the upper mold frame (51) and is fixedly installed with an upper mold base (53). The bottom of the upper mold base (53) is fixedly installed with an upper mold body (54).

6. The stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 5, characterized in that, The demolding assembly (464) also includes: A crossbar (4644) is fixedly connected to both sides of the upper mold frame (51). A bending shaft (4645) is fixedly installed on the inner side of the crossbar (4644). An upper guide frame (4646) is fixedly installed at the bottom of the bending shaft (4645). The bottom of the upper guide frame (4646) is arc-shaped. Arc-shaped guide plate (4647) is fixedly installed at both ends of the bottom of the inner push frame (4641). After the lower mold base (44) is flipped, the upper guide frame (4646) presses against the arc-shaped guide plate (4647) to push the inner push frame (4641) so as to achieve automatic demolding after flipping.

7. A stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 6, characterized in that, The bottom edge of the arc-shaped guide plate (4647) is provided with an arc-shaped groove (4648), and the inner side of the arc-shaped groove (4648) is rotatably connected with guide wheels (4649) arranged in an arc shape at equal intervals.

8. A stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 5, characterized in that, The support mechanism (7) includes a support slot (71) and a support side rail (72). The support slot (71) is located in the middle of both sides of the lower mold base (44). The support side rail (72) is fixedly connected to both sides of the forming table (3). A support plate (73) is slidably connected inside the support side rail (72). A support plug (74) is fixedly installed at the inner end of the support plate (73). The support plug (74) is inserted into the support slot (71). A first rack (75) is provided on one side of the support plate (73). The first rack (75) is connected to the transmission mechanism (6).

9. A stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 8, characterized in that, The transmission mechanism (6) includes a linkage component (61) and a side frame (62). The linkage component (61) is located on both sides of the forming table (3). The side frame (62) is fixedly connected to both sides of the upper mold base (53). An outer push frame (63) is fixedly installed on the outer side of the side frame (62). A second rack (64) is fixedly installed at both ends of the bottom of the outer push frame (63). The second rack (64) is connected to the first rack (75) through the linkage component (61). A support base (65) is fixedly installed on one side of the upper mold base (51). A support plate (66) is slidably connected to both sides of the support base (65). The outer side of the support plate (66) is fixedly connected to the inner side of the outer push frame (63).

10. A stamping die assembly for non-oriented silicon steel sheets used in a new energy vehicle drive motor (42) according to claim 9, characterized in that, The linkage assembly (61) includes a side groove (611) and a side frame (612). The side groove (611) is opened on both sides of the forming table (3). A driven spur gear (613) is rotatably connected to the inner side of the side groove (611). The driven spur gear (613) meshes with the first rack (75). A driven bevel gear (614) is fixedly installed at the bottom of the driven spur gear (613). The side frame (612) is fixedly connected to both sides of the forming table (3). A driving bevel gear (615) is rotatably connected to the lower inner end of the side frame (612). The driving bevel gear (615) meshes with the driven bevel gear (614). A driving spur gear (616) is rotatably connected to the lower outer end of the side frame (612). The driving spur gear (616) meshes with the second rack (64). A conveyor frame (55) is fixedly installed at the top center of the base (1), and a conveyor belt (56) is rotatably connected to the inner side of the conveyor frame (55). The conveyor belt (56) is located directly below the lower mold body (45).

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