Die for preparing stator core and application method thereof

Abstract

The mold comprises a base and further comprises a placement plate, a demolding mechanism and a module, the placement plate is slidably connected to the top of the base, the demolding mechanism is arranged at the top of the base and comprises a pressing plate, a guide column, a moving block and an inclined rod, the pressing plate is located over the base, and the guide column is located over the moving block; four guide columns are fixedly connected to the bottom of the pressing plate, the guide columns are slidably connected with the base, inclined rods are fixedly connected to the two ends of the bottom of the pressing plate correspondingly, moving blocks are slidably connected to one ends of the inclined rods, and the two moving blocks are located at the two ends of the top of the base correspondingly and slidably connected with the base; the sliding block is slidably connected with the moving block; through the design of the demolding mechanism, rapid demolding between the iron core and the module can be achieved, through the design of the lubricating mechanism, the friction force between the module and the iron core can be reduced, and then the demolding effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of stator core preparation, in particular to a mold for preparing a stator core and an application method thereof. Background Art

[0002] The stator core is an important part of the motor's magnetic circuit. It is mainly composed of punching sheets and positioning brackets. During production, multiple punching sheets need to be stacked on the positioning brackets and then stamped together with the positioning brackets using a stamping machine.

[0003] After searching, the publication number CN220697968U is a stator core stamping die, comprising a load-bearing forming and pressing mechanism and a stamping mechanism installed on the load-bearing forming and pressing mechanism, wherein the load-bearing forming and pressing mechanism comprises a base; the assembled ring gasket is fixed to the top of the pad by combining a nut and a positioning screw, at this time the impact end column will cooperate with the second spring to be elastically connected to the sleeve, and cooperate with the insert rod to fix the pad column, at this time the core column will be fixedly clamped by the core column, at this time the end head at the top of the pressure-bearing die and the end head at the top of the core column can be combined into a table for punching the silicon steel plate, and the external hydraulic device pushes the impact end column downward, at this time the cutting head at the bottom end of the impact end column will punch the silicon steel plate, and the stator core after punching will enter the internal cavity of the cutting head at the bottom end of the impact end column after punching, thereby effectively ensuring that the stator core can be protected against pressure the moment it leaves the silicon steel plate;

[0004] Although the above technology can protect the iron core after stamping and prevent deformation of the iron core after stamping, during the actual stamping process, the mold is prone to wear due to long-term stamping operations. At this time, the friction between the mold and the iron core will increase, causing the iron core to be easily stuck in the mold during stamping and difficult to remove, thereby affecting the subsequent stamping efficiency. Summary of the Invention

[0005] The object of the present invention is to provide a mold for preparing a stator core and an application method thereof, so as to solve the problem that the existing core is difficult to be ejected during stamping.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a mold for preparing a stator core, comprising a base and further comprising:

[0007] Place the plate and slide it onto the top of the base;

[0008] The demoulding mechanism is arranged on the top of the base, and the demoulding mechanism includes a pressing plate, a guide column, a moving block and a tilting rod. The pressing plate is located directly above the base, and four guide columns are fixedly connected to the bottom of the pressing plate. The guide columns are slidably connected to the base. The two ends of the bottom of the pressing plate are respectively fixedly connected to the tilting rod, and one end of the tilting rod is slidably connected to the moving block. The two moving blocks are respectively located at the two ends of the top of the base and are slidably connected to the base.

[0009] The modules are provided in plurality and are slidably connected with the moving block.

[0010] Preferably, a receiving groove is provided at both ends of the top of the module, a first spring is fixedly connected to the bottom of the receiving groove, a top block is fixedly connected to the top of the first spring, a first through hole is provided at a position adjacent to the receiving groove of the module, and a flow channel is provided at one end of the first through hole at the top of the module.

[0011] Preferably, a mounting plate is provided above the pressure plate, four spring dampers are fixedly connected to the bottom of the mounting plate, the spring dampers are fixedly connected to the pressure plate, and a lubrication mechanism is provided at the center of the bottom of the mounting plate.

[0012] Preferably, the lubrication mechanism includes an oil storage box, a support tube, a piston tube, an oil spray pipe and a sleeve. The oil storage box is fixedly connected to the bottom of the mounting plate. The bottom of the oil storage box is connected to multiple support tubes. The bottom of the support tube is provided with a piston tube. The bottom of the support tube extends to the inside of the piston tube and is fixedly connected to an oil pressure plate. The oil pressure plate is slidably connected to the piston tube. The bottom of the oil pressure plate is fixedly connected to a fourth spring. The fourth spring is fixedly connected to the piston tube. The bottom of the piston tube is connected to an oil spray pipe. The outer wall of the oil spray pipe is slidably connected to a sleeve. The pressure plate is located at the piston tube and is provided with a second through hole.

[0013] Preferably, a plurality of first spray holes are provided at one end of the side wall of the oil injection pipe, and a second spray hole adapted to the first spray holes is provided at one end of the side wall of the sleeve.

[0014] Preferably, a second spring is fixedly connected to the bottom of the inner wall of the sleeve, and the top of the second spring is fixedly connected to the fuel injection pipe.

[0015] Preferably, a block is provided at the bottom of the support tube, a third spring is fixedly connected to one end of the inner wall of the support tube, the support tube is located in the third spring and is fixedly connected to a telescopic rod, and the third spring and the bottom of the telescopic rod are both fixedly connected to the block.

[0016] Preferably, the bottom of the pressure plate is located at both ends of the tilt rod and is fixedly connected to guide blocks, and both ends of the moving block are provided with guide holes.

[0017] Preferably, one end of the moving block is fixedly connected to a connecting column, and the module is slidably connected to the connecting column.

[0018] A method for applying a mold for preparing a stator core comprises the following steps:

[0019] S1. Install multiple modules on the connecting columns of the moving block, with the upper module placed on the top block of the lower module. Then place the core to be punched on the placement plate and move the moving plate to the bottom of the pressing plate.

[0020] S2. The mounting plate and the pressure plate are driven downward by a cylinder or other driving member. During the downward movement of the pressure plate, the tilting rod is driven downward. Under the guidance of the tilting rod, the moving block moves toward the placement plate, and at the same time, the module is driven toward the placement plate.

[0021] S3. When the module moves to the iron core position, the iron core punching sheet will be located between the upper and lower modules. At this time, the cylinder continues to drive the mounting plate downward. At this time, the spring damper will contract, and the pressure plate will not move. At this time, the piston tube and the fuel injection pipe will pass through the pressure plate through the second through hole and move into the module through the first through hole. When the sleeve contacts the base, the sleeve will no longer move downward. At this time, the mounting plate continues to be driven downward, thereby moving the fuel injection pipe downward. At the same time, the second spring contracts to align the first spray hole with the second spray hole.

[0022] S4. When the second spring is fully contracted, the oil injection pipe and piston tube no longer move downward, while the support tube and oil pressure plate can continue to move downward, thereby squeezing the lubricating oil in the piston tube. At this time, the fourth spring contracts. As the oil pressure plate moves downward, the lubricating oil is sprayed out through the first and second spray holes and flows into the module surface through the flow channel, thereby providing lubrication and facilitating subsequent demoulding.

[0023] S5. When the spring damper is fully contracted, the cylinder mounting plate moves downward, driving the pressure plate to move downward. The pressure plate then squeezes the module. The first spring contracts, and the top block moves into the receiving slot. Under the continuous compression of the pressure plate, the distance between the upper and lower modules shrinks, thereby punching down the iron core, allowing the punching sheet in the iron core to connect with the positioning bracket.

[0024] S6, when the stamping is completed, the cylinder drives the mounting plate and the pressure plate to move upward. During the upward movement of the mounting plate, the support tube, the piston tube and the oil injection pipe are driven upward. At this time, the second spring rebounds, causing the first spray hole and the second spray hole to be misaligned. Then the fourth spring gradually rebounds. At this time, the distance between the oil pressure plate and the bottom of the piston tube gradually increases. Since the first spray hole on the oil injection pipe is blocked by the sleeve, negative pressure is generated in the oil injection pipe and the piston tube. Under the action of negative pressure, the lubricating oil in the support tube pushes the block downward and flows into the piston tube through the gap between the block and the oil pressure plate, so as to facilitate lubrication of the subsequent modules.

[0025] S7. When the pressure plate moves upward, the tilt rod will be driven to move upward. Under the guidance of the tilt rod, the moving block will be driven to move away from the iron core. When the moving block moves, the module will be driven to move, thereby moving the module away from the iron core, thereby achieving demoulding.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention can quickly demould the stamped iron core through the design of the demoulding mechanism, wherein the pressing plate is driven to move downward, thereby driving the tilting rod to move downward. At this time, the moving block will move toward the iron core under the guidance of the tilting rod, and at the same time drive the module to move toward the iron core, so as to stamp the iron core. When the stamping is completed, the pressing plate will move upward, thereby driving the tilting rod to move upward. Under the guidance of the tilting rod, the moving block will move in the direction away from the iron core, and drive the module to move away from the iron core, thereby realizing the demoulding process.

[0028] The present invention lubricates the module through the design of a lubricating mechanism, which can reduce the wear of the module during stamping on the one hand, and reduce the friction between the module and the iron core on the other hand, thereby ensuring the demoulding effect and reducing the wear of the iron core during stamping;

[0029] The present invention provides a receiving groove on the module and provides a first spring and a top block in the receiving groove. When multiple modules are installed on the moving block, the module located above will be placed on the top block of the module below. At this time, there is a certain gap between the two modules. When the module moves to the iron core position, the punching sheet of the iron core can be located in the gap between the two modules, so that the subsequent modules can smoothly punch the iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the connection structure between the base and the placement plate in the present invention;

[0032] Figure 3 Schematic diagram of the demoulding mechanism structure in the present invention;

[0033] Figure 4 This is a schematic diagram of the connection structure between the moving block and the module in the present invention;

[0034] Figure 5 Schematic diagram of the side cross-section structure of the module in the present invention;

[0035] Figure 6 Schematic diagram of the lubrication mechanism structure of the present invention;

[0036] Figure 7 Schematic diagram of the side cross-section structure of the piston tube and sleeve in the present invention;

[0037] Figure 8 It is a schematic diagram of the side cross-sectional structure of the support tube and the oil pressure plate in the present invention.

[0038] In the figure: 1. base; 2. placement plate; 3. demoulding mechanism; 301. pressure plate; 302. guide column; 303. tilting rod; 304. moving block; 305. second through hole; 306. guide block; 307. guide hole; 308. connecting column; 4. module; 5. lubrication mechanism; 501. oil storage box; 502. support tube; 503. piston tube; 504. oil pressure plate; 505. fourth spring; 506. oil injection pipe; 507. sleeve; 508. first spray hole; 509. second spray hole; 510. second spring; 511. blocking block; 512. third spring; 513. telescopic rod; 6. iron core; 7. receiving groove; 8. top block; 9. first through hole; 10. mounting plate; 11. spring damper; 12. first spring; 13. flow channel. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] See also Figures 1-8The present invention provides a technical solution: a mold for preparing a stator core 6, comprising a base 1, a placing plate 2, a demoulding mechanism 3 and a module 4, wherein the placing plate 2 is slidably connected to the top of the base 1, and the demoulding mechanism 3 is arranged on the top of the base 1, and the demoulding mechanism 3 comprises a pressing plate 301, a guide column 302, a moving block 304 and a tilting rod 303, the pressing plate 301 is located directly above the base 1, and four guide columns 302 are fixedly connected to the bottom of the pressing plate 301, and the guide columns 302 are slidably connected to the base 1, and the two ends of the bottom of the pressing plate 301 are respectively fixedly connected to the tilting rods 303, and the tilting rods 303 One end is slidably connected to a moving block 304, and the two moving blocks 304 are respectively located at the two ends of the top of the base 1 and are slidably connected to the base 1. Multiple modules 4 are provided, and are slidably connected to the moving blocks 304; the top ends of the module 4 are respectively provided with a receiving groove 7, the bottom of the receiving groove 7 is fixedly connected to the first spring 12, and the top of the first spring 12 is fixedly connected to the top of the top block 8. The module 4 is provided with a first through hole 9 at a position adjacent to the receiving groove 7, and the top of the module 4 is provided with a flow channel 13 at one end of the first through hole 9; one end of the moving block 304 is fixedly connected to a connecting column 308, and the module 4 is slidably connected to the connecting column 308;

[0041] Specifically, the stator core 6 is mainly composed of punching sheets and positioning brackets. During production, multiple punching sheets need to be stacked on the positioning brackets, and the punching sheets and the positioning brackets are punched together by a stamping device. During operation, the core 6 to be punched is first placed on the placement plate 2, and the placement plate 2 is pushed to the bottom of the pressure plate 301. At the same time, multiple modules 4 are installed on the connecting columns 308 of the moving block 304, wherein the upper module 4 will be placed on the top block 8 of the lower module 4. At this time, there is a certain gap between the two modules 4, so that when the module 4 moves to the position of the core 6, the punching sheets of the core 6 can be located in the gap between the two modules 4, so that the subsequent module 4 can smoothly punch the core 6, and then the pressure plate 301 is driven downward by a cylinder or other driving parts. In the process of the pressure plate 301 moving downward, the tilting rod 303 is driven downward. Under the guiding action of 303, the moving block 304 will move toward the iron core 6, and at the same time drive the module 4 to move toward the iron core 6. When the module 4 moves to the position of the iron core 6, the punching sheet of the iron core 6 will be located in the gap between the upper and lower modules 4. Under the continuous drive of the cylinder, the distance between the upper and lower modules 4 will decrease. At this time, the first spring 12 will shrink, and the top block 8 will move into the accommodating groove 7. In the process of gradually reducing the gap between the upper and lower modules 4, the iron core 6 can be squeezed to achieve the stamping of the iron core 6. After the iron core 6 is stamped and formed, the pressure plate 301 is driven upward by the cylinder. At this time, the pressure plate 301 drives the tilting rod 303 to move upward. Under the guiding action of the tilting rod 303, the moving block 304 will move in the direction away from the iron core 6, and drive the module 4 to move away from the iron core 6, thereby realizing the demolding process.

[0042] like Figure 1 、 Figures 6 to 8 As shown, a mounting plate 10 is provided above the pressure plate 301, and four spring dampers 11 are fixedly connected to the bottom of the mounting plate 10. The spring dampers 11 are fixedly connected to the pressure plate 301, and a lubrication mechanism 5 is provided at the center of the bottom of the mounting plate 10; the lubrication mechanism 5 includes an oil storage box 501, a support tube 502, a piston tube 503, an oil injection pipe 506 and a sleeve 507. The oil storage box 501 is fixedly connected to the bottom of the mounting plate 10, and the bottom of the oil storage box 501 is connected to multiple support tubes 502. The bottom of the support tube 502 is provided with a piston tube 503. The bottom of the support tube 502 extends to the inside of the piston tube 503 and is fixedly connected to an oil pressure plate 504. The oil pressure plate 504 is slidably connected to the piston tube 503, a fourth spring 505 is fixedly connected to the bottom of the oil pressure plate 504, and the fourth spring 505 is fixedly connected to the piston tube 503. The bottom of the piston tube 503 is connected to the oil injection pipe 506, and the outer wall of the oil injection pipe 506 is slidably connected to the sleeve 507. The pressure plate 301 is provided with a second through hole 305 on the piston tube 503; a plurality of first spray holes 508 are provided at one end of the side wall of the oil injection pipe 506, and a second spray hole 509 adapted to the first spray holes 508 is provided at one end of the side wall of the sleeve 507; a second spring 510 is fixedly connected to the bottom of the inner wall of the sleeve 507, and the top of the second spring 510 is fixedly connected to the oil injection pipe 506;

[0043] Specifically, the mounting plate 10 is driven downward by the cylinder, thereby driving the pressure plate 301 to move downward, thereby driving the tilt rod 303 to move downward, and then driving the moving block 304 and the module 4 to move toward the iron core 6. When the module 4 moves to the iron core 6 position, the mounting plate 10 is continued to be driven downward by the cylinder. At this time, the spring damper 11 will contract, and the pressure plate 301 will not move. At this time, the piston tube 503 and the oil injection pipe 506 will pass through the second through hole 305 through the pressure plate 301 and move into the module 4 through the first through hole 9. When the sleeve 507 contacts the base 1, that is, the sleeve 507 no longer moves downward, the mounting plate 10 is continued to be driven. The fourth spring 505 will contract, and in the process of the oil pressure plate 504 moving downward, the lubricating oil will be sprayed out through the first spray hole 508 and the second spray hole 509, and flow into the surface of the module 4 through the flow channel 13, thereby playing a lubricating role for the subsequent demolding.

[0044] like Figure 8As shown, a block 511 is provided at the bottom of the support tube 502, a third spring 512 is fixedly connected to one end of the inner wall of the support tube 502, and the support tube 502 is fixedly connected to a telescopic rod 513 inside the third spring 512. The bottoms of the third spring 512 and the telescopic rod 513 are both fixedly connected to the block 511;

[0045] Specifically, when the iron core 6 is stamped, the cylinder is required to drive the mounting plate 10 and the pressure plate 301 to move upward. During this process, the mounting plate 10 will first move upward, causing the first spray hole 508 and the second spray hole 509 to be misaligned. At the same time, the spring damper 11 will rebound. In the process of the mounting plate 10 moving upward, the oil storage box 501, the support tube 502, the piston tube 503 and the oil spray pipe 506 will move upward. At this time, the sleeve 507 remains stationary, and the second spring 510 will rebound. When the second spring 510 returns to its natural state, the fourth spring 505 will rebound. At this time, the sleeve 507 , the piston tube 503 and the oil injection pipe 506 will remain stationary. At this time, the distance between the oil pressure plate 504 and the bottom of the piston tube 503 will gradually increase. Since the first spray hole 508 on the oil injection pipe 506 is blocked by the sleeve 507, negative pressure will be generated in the oil injection pipe 506 and the piston tube 503. Under the action of negative pressure, the lubricating oil in the support tube 502 and the oil storage box 501 will push the block 511 to move downward, allowing the third spring 512 to extend. At this time, the lubricating oil will flow into the piston tube 503 through the gap between the block 511 and the oil pressure plate 504, so that the subsequent module 4 can be lubricated.

[0046] like Figures 3 and 4 As shown, the bottom of the pressing plate 301 is located at both ends of the tilt rod 303 and is fixedly connected to a guide block 306, and both ends of the moving block 304 are provided with a guide hole 307;

[0047] Specifically, when the pressure plate 301 moves downward, the guide block 306 will be driven to move downward. When the guide block 306 moves to the inside of the guide hole 307 of the moving block 304, the guiding force of the tilting rod 303 on the moving block 304 can be increased, thereby preventing the moving block 304 from shaking during the stamping process.

[0048] An application method for preparing a mold for a stator core 6 comprises the following steps:

[0049] S1. Install multiple modules 4 on the connecting columns 308 of the moving block 304, with the upper module 4 resting on the top block 8 of the lower module 4. Then place the core 6 to be punched on the placement plate 2, and move the moving plate to directly below the pressing plate 301.

[0050] S2. The mounting plate 10 and the pressing plate 301 are driven downward by a driving member such as a cylinder. During the downward movement of the pressing plate 301, the tilting rod 303 is driven downward. Under the guidance of the tilting rod 303, the moving block 304 moves toward the placement plate 2, and at the same time, the module 4 is driven toward the placement plate 2.

[0051] S3. When the module 4 moves to the position of the iron core 6, the punching sheet of the iron core 6 will be located between the upper and lower modules 4. At this time, the mounting plate 10 is driven downward by the cylinder. At this time, the spring damper 11 will contract, and the pressure plate 301 will not move. At this time, the piston tube 503 and the oil injection pipe 506 will pass through the pressure plate 301 through the second through hole 305 and move into the module 4 through the first through hole 9. When the sleeve 507 contacts the base 1, the sleeve 507 no longer moves downward. At this time, the mounting plate 10 is driven downward, thereby causing the oil injection pipe 506 to move downward. At the same time, the second spring 510 contracts to align the first spray hole 508 with the second spray hole 509.

[0052] S4. When the second spring 510 is fully contracted, the oil injection pipe 506 and the piston tube 503 no longer move downward, while the support tube 502 and the oil pressure plate 504 can continue to move downward, thereby squeezing the lubricating oil in the piston tube 503. At this time, the fourth spring 505 contracts. During the downward movement of the oil pressure plate 504, the lubricating oil is sprayed out through the first spray hole 508 and the second spray hole 509, and flows into the surface of the module 4 through the flow channel 13, thereby playing a lubricating role and facilitating subsequent demoulding;

[0053] S5. When the spring damper 11 is fully contracted, the cylinder mounting plate 10 moves downward, driving the pressing plate 301 to move downward. As a result, the pressing plate 301 squeezes the module 4. The first spring 12 contracts, and the top block 8 moves into the receiving groove 7. Under the continuous squeezing of the pressing plate 301, the distance between the upper and lower modules 4 is continuously reduced, thereby punching down the iron core 6, allowing the punching sheet in the iron core 6 to be connected to the positioning bracket.

[0054] S6, when the stamping is completed, the cylinder drives the mounting plate 10 and the pressure plate 301 to move upward. In the process of the mounting plate 10 moving upward, the support tube 502, the piston tube 503 and the oil injection pipe 506 will be driven to move upward. At this time, the second spring 510 rebounds, causing the first spray hole 508 and the second spray hole 509 to be misaligned. Then the fourth spring 505 will gradually rebound. At this time, the distance between the oil pressure plate 504 and the bottom of the piston tube 503 will gradually increase. Since the first spray hole 508 on the oil injection pipe 506 is blocked by the sleeve 507, negative pressure will be generated in the oil injection pipe 506 and the piston tube 503. Under the action of negative pressure, the lubricating oil in the support tube 502 will push the blocking block 511 to move downward and flow into the piston tube 503 through the gap between the blocking block 511 and the oil pressure plate 504, so as to facilitate the subsequent lubrication of the module 4.

[0055] S7. When the pressing plate 301 moves upward, the tilting rod 303 will be driven to move upward. Under the guidance of the tilting rod 303, the moving block 304 will be driven to move away from the iron core 6. When the moving block 304 moves, the module 4 will be driven to move, thereby moving the module 4 away from the iron core 6, thereby achieving demolding.

[0056] Working principle: During operation, the iron core 6 to be punched is first placed on the placement plate 2, and the placement plate 2 is pushed to the bottom of the pressing plate 301. At the same time, multiple modules 4 are installed on the connecting column 308 of the moving block 304, wherein the upper module 4 is placed on the top block 8 of the lower module 4. At this time, there is a certain gap between the two modules 4, so that when the module 4 moves to the position of the iron core 6, the punching sheet of the iron core 6 can be located in the gap between the two modules 4, so that the subsequent module 4 can smoothly punch the iron core 6, and then the mounting plate 10 and the pressing plate 301 are driven downward by the driving parts such as the cylinder. When the pressing plate 301 moves downward, During this process, the tilt rod 303 will be driven to move downward. Under the guidance of the tilt rod 303, the moving block 304 will move toward the iron core 6, and at the same time, the module 4 will be driven to move toward the iron core 6. When the module 4 moves to the position of the iron core 6, the pressing plate 301 will contact the top block 8 on the uppermost module 4. At this time, the mounting plate 10 will continue to move downward through the cylinder. At this time, the spring damper 11 will contract, while the pressing plate 301 will not move. At this time, the first spring 12 has not contracted. At this time, the piston tube 503 and the oil injection pipe 506 will pass through the second through hole 305 through the pressing plate 301 and move into the module 4 through the first through hole 9.

[0057] When the sleeve 507 contacts the base 1, that is, the sleeve 507 no longer moves downward, the mounting plate 10 continues to be driven downward, so that the oil injection pipe 506 moves downward, and the second spring 510 contracts so that the first spray hole 508 is aligned with the second spray hole 509. When the second spring 510 is fully contracted, the oil injection pipe 506 and the piston tube 503 no longer move downward, while the support tube 502 and the oil pressure plate 504 can continue to move downward, thereby squeezing the lubricating oil in the piston tube 503. At this time, the fourth spring 505 contracts. As the oil plate 504 moves downward, the lubricating oil will be sprayed out through the first spray hole 508 and the second spray hole 509, and will flow into the surface of the module 4 through the flow channel 13, thereby playing a lubricating role and facilitating subsequent demoulding. When the spring damper 11 is fully contracted, the mounting plate 10 will continue to move downward through the cylinder, thereby driving the pressing plate 301 to move downward. At this time, the first spring 12 will contract, and the top block 8 will move into the receiving groove 7. In the process of gradually reducing the gap between the upper and lower modules 4, the iron core 6 can be squeezed, thereby achieving the stamping of the iron core 6.

[0058] When the iron core 6 is stamped, it is necessary to use the cylinder to drive the mounting plate 10 and the pressure plate 301 to move upward. During this process, the mounting plate 10 will move upward first, causing the first spray hole 508 and the second spray hole 509 to be misaligned. At the same time, the spring damper 11 will rebound. In the process of the mounting plate 10 moving upward, the oil storage box 501, the support tube 502, the piston tube 503 and the oil spray pipe 506 will move upward. At this time, the sleeve 507 remains stationary, and the second spring 510 will rebound. When the second spring 510 returns to its natural state, the fourth spring 505 will rebound. At this time, the sleeve 507, the movable The plug tube 503 and the oil injection pipe 506 will remain stationary. At this time, the distance between the oil pressure plate 504 and the bottom of the piston tube 503 will gradually increase. Since the first spray hole 508 on the oil injection pipe 506 is blocked by the sleeve 507, negative pressure will be generated in the oil injection pipe 506 and the piston tube 503. Under the action of negative pressure, the lubricating oil in the support tube 502 and the oil storage box 501 will push the block 511 to move downward, allowing the third spring 512 to extend. At this time, the lubricating oil will flow into the piston tube 503 through the gap between the block 511 and the oil pressure plate 504, so as to facilitate the subsequent lubrication of the module 4.

[0059] When the spring damper 11, the second spring 510 and the fourth spring 505 are restored to their natural state, the cylinder continues to drive the mounting plate 10 to move upward, thereby driving the pressure plate 301 to move upward. At this time, the pressure plate 301 drives the tilting rod 303 to move upward. Under the guidance of the tilting rod 303, the moving block 304 will move in the direction away from the iron core 6, and drive the module 4 to move away from the iron core 6, thereby realizing the demolding process.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for preparing a stator core (6), comprising a base (1), characterized in that: Also includes: A placement plate (2) is slidably connected to the top of the base (1); a demoulding mechanism (3) is arranged on the top of the base (1), the demoulding mechanism (3) comprises a pressing plate (301), a guide column (302), a moving block (304) and a tilting rod (303); the pressing plate (301) is located directly above the base (1); four guide columns (302) are fixedly connected to the bottom of the pressing plate (301); the guide columns (302) are slidably connected to the base (1); the two ends of the bottom of the pressing plate (301) are respectively fixedly connected to the tilting rod (303); one end of the tilting rod (303) is slidably connected to the moving block (304); the two moving blocks (304) are respectively located at the two ends of the top of the base (1) and are slidably connected to the base (1); a plurality of modules (4) are provided and are slidably connected to the moving block (304).

2. A mold for preparing a stator core (6) according to claim 1, characterized in that: The module (4) is provided with a receiving groove (7) at both ends of the top, a first spring (12) is fixedly connected to the bottom of the receiving groove (7), and a top block (8) is fixedly connected to the top of the first spring (12). The module (4) is provided with a first through hole (9) at a position adjacent to the receiving groove (7), and a flow channel (13) is provided at one end of the first through hole (9) at the top of the module (4).

3. A mold for preparing a stator core (6) according to claim 2, characterized in that: A mounting plate (10) is provided above the pressure plate (301), four spring dampers (11) are fixedly connected to the bottom of the mounting plate (10), the spring dampers (11) are fixedly connected to the pressure plate (301), and a lubrication mechanism (5) is provided at the center of the bottom of the mounting plate (10).

4. A mold for preparing a stator core (6) according to claim 3, characterized in that: The lubricating mechanism (5) comprises an oil storage box (501), a support tube (502), a piston tube (503), an oil spraying pipe (506) and a sleeve (507). The oil storage box (501) is fixedly connected to the bottom of the mounting plate (10). The bottom of the oil storage box (501) is connected to a plurality of support tubes (502). The bottom of the support tube (502) is provided with a piston tube (503). The bottom of the support tube (502) extends to the inside of the piston tube (503) and is fixedly connected to a pressure oil nozzle. The oil pressure plate (504) is slidably connected to the piston tube (503), the bottom of the oil pressure plate (504) is fixedly connected to a fourth spring (505), the fourth spring (505) is fixedly connected to the piston tube (503), the bottom of the piston tube (503) is connected to an oil injection pipe (506), the outer wall of the oil injection pipe (506) is slidably connected to a sleeve (507), and the pressure plate (301) is provided with a second through hole (305) at the piston tube (503).

5. A mold for preparing a stator core (6) according to claim 4, characterized in that: One end of the side wall of the oil injection pipe (506) is provided with a plurality of first spray holes (508), and one end of the side wall of the sleeve (507) is provided with second spray holes (509) adapted to the first spray holes (508).

6. A mold for preparing a stator core (6) according to claim 5, characterized in that: A second spring (510) is fixedly connected to the bottom of the inner wall of the sleeve (507), and the top of the second spring (510) is fixedly connected to the oil injection pipe (506).

7. A mold for preparing a stator core (6) according to claim 6, characterized in that: A blocking block (511) is provided at the bottom of the support tube (502), a third spring (512) is fixedly connected to one end of the inner wall of the support tube (502), a telescopic rod (513) is fixedly connected to the support tube (502) inside the third spring (512), and the bottoms of the third spring (512) and the telescopic rod (513) are both fixedly connected to the blocking block (511).

8. A mold for preparing a stator core (6) according to claim 7, characterized in that: The bottom of the pressing plate (301) is located at both ends of the tilting rod (303), and guide blocks (306) are fixedly connected thereto. The two ends of the moving block (304) are provided with guide holes (307).

9. A mold for preparing a stator core (6) according to claim 8, characterized in that: One end of the moving block (304) is fixedly connected to a connecting column (308), and the module (4) is slidably connected to the connecting column (308).

10. An application method for a mold for preparing a stator core (6) according to claim 9, characterized in that: The following steps are involved: S1. Install multiple modules (4) on the connecting column (308) of the moving block (304), wherein the upper module (4) is placed on the top block (8) of the lower module (4), and then place the iron core (6) to be punched on the placement plate (2), and move the placement plate (2) to the bottom of the pressing plate (301); S2, driving the mounting plate (10) and the pressing plate (301) downward by a driving member such as a cylinder, and in the process of the pressing plate (301) moving downward, the tilting rod (303) is driven to move downward, and under the guidance of the tilting rod (303), the moving block (304) moves toward the placement plate (2), and at the same time drives the module (4) to move toward the placement plate (2); S3. When the module (4) moves to the position of the iron core (6), the punching sheet of the iron core (6) will be located between the upper and lower modules (4). At this time, the mounting plate (10) is driven downward by the cylinder. At this time, the spring damper (11) will shrink, and the pressure plate (301) will not move. At this time, the piston tube (503) and the injection pipe (506) will pass through the pressure plate (301) through the second through hole (305) and move to the inside of the module (4) through the first through hole (9). When the sleeve (507) contacts the base (1), the sleeve (507) no longer moves downward. At this time, the mounting plate (10) is driven downward, thereby moving the injection pipe (506) downward. At the same time, the second spring (510) shrinks so that the first spray hole (508) and the second spray hole (509) are aligned. S4. When the second spring (510) is fully contracted, the oil injection pipe (506) and the piston tube (503) no longer move downward, while the support tube (502) and the oil pressure plate (504) can continue to move downward, thereby squeezing the lubricating oil in the piston tube (503). At this time, the fourth spring (505) will contract. During the downward movement of the oil pressure plate (504), the lubricating oil will be sprayed out through the first spray hole (508) and the second spray hole (509), and flow into the surface of the module (4) through the flow channel (13), thereby playing a lubricating role and facilitating subsequent demoulding; S5. When the spring damper (11) is fully retracted, the cylinder mounting plate (10) moves downward, and drives the pressure plate (301) to move downward, so that the pressure plate (301) will squeeze the module (4). At this time, the first spring (12) will shrink, and the top block (8) will move into the receiving groove (7). Under the continuous squeezing of the pressure plate (301), the distance between the upper and lower modules (4) will continue to shrink, thereby punching down the iron core (6), so that the punching sheet in the iron core (6) can be connected to the positioning bracket; S6, when the stamping is completed, the mounting plate (10) and the pressure plate (301) are driven upward by the cylinder. During the upward movement of the mounting plate (10), the support tube (502), the piston tube (503) and the oil injection pipe (506) are driven upward. At this time, the second spring (510) rebounds, causing the first spray hole (508) and the second spray hole (509) to be misaligned. Then the fourth spring (505) gradually rebounds. At this time, the oil pressure plate (504) and the bottom of the piston tube (503) are dislocated. The distance between them will gradually increase. Since the first spray hole (508) on the oil injection pipe (506) is blocked by the sleeve (507), negative pressure will be generated in the oil injection pipe (506) and the piston tube (503). Under the action of the negative pressure, the lubricating oil in the support tube (502) will push the block (511) downward and flow into the piston tube (503) through the gap between the block (511) and the oil pressure plate (504), so as to facilitate the lubrication of the subsequent module (4); S7. When the pressing plate (301) moves upward, the tilting rod (303) is driven to move upward. Under the guidance of the tilting rod (303), the moving block (304) is driven to move in a direction away from the iron core (6). When the moving block (304) moves, the module (4) is driven to move, thereby moving the module (4) away from the iron core (6), thereby achieving demoulding.

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