A method for stamping a stator and rotor lamination

Abstract

This invention relates to the field of stator and rotor lamination technology, specifically to a stator and rotor lamination stamping method, comprising: a truss, and a fixed plate and a lower die fixedly mounted on the truss; symmetrically arranged guide columns are also fixed on the truss, and a support plate is fixed to one end of each guide column away from the truss; a guide assembly is disposed on the guide columns, and an elastic pressing mechanism is disposed on the guide assembly, with an upper die cooperating with the lower die connected to the elastic pressing mechanism; a drive assembly is disposed on the support plate and connected to the elastic pressing mechanism; and an intermittent conveying mechanism is disposed on the truss and connected to the drive assembly, with symmetrically arranged conveying rollers connected to the intermittent conveying mechanism, and the drive assembly can drive the conveying rollers to rotate intermittently through the intermittent conveying mechanism. This application enables an integral forming operation of grooving and cutting steel plates through the cooperation of the upper die and the guide assembly.

Description

Technical Field

[0001] This invention relates to the field of stator and rotor lamination technology, specifically a stator and rotor lamination stamping method. Background Technology

[0002] Stator and rotor laminations are a common core material in the motor industry. This material is made of silicon steel sheet and can be processed through punching, lamination, and cutting to create the stator and rotor cores. Punching and cutting are the two most common processes in lamination manufacturing.

[0003] The selection of lamination material is one of the key factors determining the quality of the stator and rotor. Silicon steel sheets are commonly used for lamination processing, and the thickness and hardness should be determined based on factors such as the motor's power, frequency, and number of coil turns.

[0004] In response, Chinese patent CN101222166B proposes a method for stamping motor stator and rotor laminations, including the following steps: a stator and rotor lamination blanking step, stamping stator and rotor laminations on a sheet of material; a stator and rotor lamination trimming and separation step, separating the stator laminations and rotor laminations within the stator and rotor laminations using positioning process holes as a reference; and a rotor lamination processing step, stamping the rotor outer circle, slot shape, shaft hole, and keyway using the positioning process holes in the rotor lamination as a reference. The motor rotor lamination stamping process of this invention utilizes the mechanical clearance of the grooving machine and the variable grooving speed to complete the rotor laminations, which traditionally required two processes, in a single stamping operation on a single grooving die. This better eliminates slot shape errors after lamination pressing and saves stamping and operating time, reducing manufacturing costs. However, in actual use, each slot needs to be stamped sequentially, resulting in low stamping efficiency. Furthermore, after punching, the stator and rotor may shift due to the separation of the punching die and the steel sheet, potentially causing damage to the stator and rotor. Summary of the Invention

[0005] The purpose of this invention is to provide a method for stamping stator and rotor laminations to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for stamping stator and rotor laminations includes the following steps:

[0008] Step 1: Select suitable steel and place it on the punch press;

[0009] Step 2: Pull the steel to the stamping equipment, and under the action of the stamping equipment, stamp the steel to form the outline of the stator and rotor;

[0010] Step 3: After stamping, the stator and rotor are plastically formed so that the working surface of the stator and rotor has a certain curvature to adapt to subsequent installation.

[0011] Step 4: Perform surface treatment on the stator and rotor. Usually, galvanizing, electroplating, or other methods are used for corrosion and rust prevention. Spray painting or electrophoresis can also be used for treatment.

[0012] As a further aspect of the present invention: the stamping equipment includes:

[0013] A truss, and a fixing plate and a lower mold fixedly installed on the truss. The truss is also fixed with symmetrically arranged guide columns, and a support plate is fixed to one end of the guide column away from the truss.

[0014] Also includes:

[0015] A guide component is provided on the guide post, and an elastic pressing mechanism is provided on the guide component. An upper mold that cooperates with the lower mold is connected to the elastic pressing mechanism.

[0016] A driving component is disposed on the support plate and connected to the elastic molding mechanism. The driving component can drive the guiding component to move along the length direction of the guide post, and adjust the cooperation state between the upper mold and the lower mold through the elastic molding mechanism.

[0017] An intermittent conveying mechanism is mounted on the truss and connected to the drive assembly. Symmetrically arranged conveying rollers are connected to the intermittent conveying mechanism, and the drive assembly can drive the conveying rollers to rotate intermittently through the intermittent conveying mechanism.

[0018] As a further embodiment of the present invention: the guiding assembly includes a guide sleeve slidably mounted on the guide post, a movable plate is fixed on the guide sleeve, and a cutting disc is fixed to one end of the movable plate facing the truss.

[0019] As a further embodiment of the present invention: the elastic molding mechanism includes fixed columns that are fixedly installed on the movable plate and are symmetrically arranged, a connecting plate is fixed to one end of the fixed column away from the movable plate, and an elastic component connected to the upper mold is provided on the connecting plate.

[0020] As a further embodiment of the present invention: the elastic component includes a support sleeve fixedly installed on the connecting plate and symmetrically arranged, a movable rod slidably installed inside the support sleeve, the movable rod being fixedly connected to the upper mold, and a spring abutting against the movable rod being fixed inside the support sleeve;

[0021] It also includes a slot formed on the support sleeve, and a limiting block that is slidably connected to the slot is fixed on the movable rod.

[0022] As a further embodiment of the present invention: the drive assembly includes a motor fixedly mounted on the support plate, a crankshaft rotatably mounted on the support plate and connected to the output shaft of the motor, a hinge plate rotatably mounted on the crankshaft, and a tie rod hinged to the hinge plate and fixedly connected to the connecting plate.

[0023] As a further embodiment of the present invention: the intermittent conveying mechanism includes three rotating rods rotatably mounted on the fixed plate and arranged symmetrically, the three rotating rods being fixedly connected to the conveying roller, two meshing gears being fixed on the two three rotating rods respectively, and a Maltese cross movement assembly connected to the three rotating rods being provided on the support plate.

[0024] As a further embodiment of the present invention: the Maltese cross movement assembly includes a first rotating rod fixedly mounted on the crankshaft, a drive wheel fixedly mounted on the first rotating rod, a second rotating rod rotatably mounted on the support plate, a driven wheel cooperating with the drive wheel fixedly mounted on the second rotating rod, and a belt sleeved on the second rotating rod and connected to one of the third rotating rods.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: This application can stamp and form steel sheets by controlling the cooperation state of the upper and lower dies, and after the stator and rotor are stamped, the steel sheets are moved by the intermittent conveying mechanism to facilitate the continuous stamping process of the stator and rotor. When stamping is required, the drive component works to drive the elastic pressing die mechanism to move, and under the action of the guide component, the upper die moves towards the lower die. When the upper die and the lower die are in cooperation, the steel sheets are stamped and formed. At this time, under the action of the guide component, the stamped stator and rotor are cut. After the cutting is completed, the drive component controls the upper die to move away from the lower die. At the same time, the drive component also drives the intermittent conveying mechanism to move, so as to control the steel sheets to move a certain distance by the conveying roller. The above steps are repeated to achieve the purpose of continuously stamping the stator and rotor. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the process flow of one embodiment of the stator and rotor lamination stamping method.

[0027] Figure 2 This is a schematic diagram of one embodiment of the stator and rotor lamination stamping method.

[0028] Figure 3 This is a structural schematic diagram of another angle in one embodiment of the stator and rotor lamination stamping method.

[0029] Figure 4This is a half-section structural schematic diagram of one embodiment of the stator and rotor lamination stamping method.

[0030] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0031] Figure 6 This is a schematic diagram showing the connection relationship between a portion of the drive assembly and a portion of the intermittent conveying mechanism in one embodiment of the stator and rotor lamination stamping method.

[0032] Figure 7 This is an exploded structural diagram of a portion of the drive assembly and a portion of the intermittent conveying mechanism in one embodiment of the stator and rotor lamination stamping method.

[0033] Figure 8 This is a schematic diagram of the elastic pressure film mechanism in one embodiment of the stator and rotor lamination stamping method.

[0034] Figure 9 This is an exploded structural diagram of a portion of the elastic pressure film mechanism in one embodiment of the stator and rotor lamination stamping method.

[0035] In the diagram: 1. Truss; 2. Lower mold; 3. Guide column; 4. Support plate; 5. Motor; 6. Crankshaft; 7. Rotating rod No. 1; 8. Drive wheel; 9. Rotating rod No. 2; 10. Driven wheel; 11. Belt; 12. Fixed plate; 13. Rotating rod No. 3; 14. Conveying roller; 15. Gear; 16. Hinge plate; 17. Tie rod; 18. Connecting plate; 19. Fixed column; 20. Guide sleeve; 21. Movable plate; 22. Support sleeve; 23. Slot; 24. Movable rod; 25. Limiting block; 26. Spring; 27. Upper mold; 28. Cutting disc. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-9 In this embodiment of the invention, a method for stamping stator and rotor laminations includes the following steps:

[0038] Step 1: Select suitable steel and place it on the punch press;

[0039] Step 2: Pull the steel to the stamping equipment, and under the action of the stamping equipment, stamp the steel to form the outline of the stator and rotor;

[0040] Step 3: After stamping, the stator and rotor are plastically formed so that the working surface of the stator and rotor has a certain curvature to adapt to subsequent installation.

[0041] Step 4: Perform surface treatment on the stator and rotor. Usually, galvanizing, electroplating, or other methods are used for corrosion and rust prevention. Spray painting or electrophoresis can also be used for treatment.

[0042] The stamping equipment includes:

[0043] Truss 1, and fixed plate 12 and lower mold 2 fixedly installed on the truss 1. Guide columns 3 are also fixedly arranged symmetrically on the truss 1. A support plate 4 is fixed to one end of the guide column 3 away from the truss 1.

[0044] Also includes:

[0045] Please see Figures 2-4 A guide assembly is provided on the guide post 3. The guide assembly includes a guide sleeve 20 that is slidably mounted on the guide post 3. A movable plate 21 is fixed on the guide sleeve 20. A cutting disc 28 is fixed on one end of the movable plate 21 facing the truss 1.

[0046] In detail, when laminating the stator and rotor, it is necessary to control the upper die 27 and the lower die 2 to cooperate. Therefore, under the action of the elastic pressing mechanism, the movable plate 21 is driven to move, thereby driving the guide sleeve 20 to move along the length direction of the guide post 3. The guide sleeve 20 and the guide post 3 have a guiding function to ensure that the movable plate 21 will not deviate during movement. When the upper die 27 cooperates with the lower die 2, the stator and rotor lamination is completed. At this time, under the action of the cutting disc 28, the stator and rotor that have been lamination are cut.

[0047] Please see Figures 2-5 , Figure 8 , Figure 9 The guide assembly is provided with an elastic molding mechanism, and an upper mold 27 that cooperates with the lower mold 2 is connected to the elastic molding mechanism. The elastic molding mechanism includes fixed columns 19 that are fixedly installed on the movable plate 21 and are symmetrically arranged. A connecting plate 18 is fixed to one end of the fixed column 19 away from the movable plate 21. An elastic component connected to the upper mold 27 is provided on the connecting plate 18. The elastic component includes a support sleeve 22 that is fixedly installed on the connecting plate 18 and is symmetrically arranged. A movable rod 24 is slidably installed in the support sleeve 22. The movable rod 24 is fixedly connected to the upper mold 27. A spring 26 that abuts against the movable rod 24 is fixed in the support sleeve 22. The mechanism also includes a slot 23 opened on the support sleeve 22. A limiting block 25 that is slidably connected to the slot 23 is fixed on the movable rod 24.

[0048] It should be noted that, initially, spring 26 is compressed, causing the movable rod 24 to be at the end of its stroke away from the support sleeve 22, and the distance between the upper mold 27 and the movable plate 21 is at its maximum. When the stator and rotor need to be stamped, the drive assembly works and drives the connecting plate 18 to move, thereby driving the fixed column 19 to move. The fixed column 19 also drives the guide sleeve 20 to move along the length of the guide column 3 via the movable plate 21. The connecting plate 18 also drives the support sleeve 22 to move, thereby driving the movable rod 24 to move via spring 26. The movable rod 24 also drives the upper mold 27 to move towards the lower mold 2. When the upper mold 27 moves to the position where it abuts against the lower mold 2, the upper mold 27 stops moving, and the support sleeve 22 will enter the movable rod 24, causing the limit block 25 to move along the lower mold 2. The slot 23 moves along its length and compresses the spring 26. Under the action of the upper mold 27, the steel plate placed between the upper mold 27 and the lower mold 2 is stamped. After the stamping is completed, the movable plate 21 continues to move and drives the cutting disc 28 to move. When the cutting disc 28 moves to abut against the steel plate, it cuts the stamped steel plate. At this time, under the action of the drive component, the connecting plate 18 is controlled to move toward the initial position, thereby driving the movable plate 21 to move, so that the cutting disc 28 separates from the steel plate. At the same time, the spring 26 is released elastically, so that the movable rod 24 moves toward the support sleeve 22 until the limit block 25 returns to the end of its stroke on one side of the slot 23. At this time, the movable rod 24 will drive the upper mold 27 to move toward the initial position. The above steps are repeated to continuously stamp the stator and rotor.

[0049] Please see Figures 2-4 , Figure 6 , Figure 7 A drive assembly is disposed on the support plate 4 and connected to the elastic molding mechanism. The drive assembly can drive the guide assembly to move along the length direction of the guide post 3, and adjust the cooperation state between the upper mold 27 and the lower mold 2 through the elastic molding mechanism. The drive assembly includes a motor 5 fixedly installed on the support plate 4, a crankshaft 6 rotatably installed on the support plate 4 and connected to the output shaft of the motor 5, a hinge plate 16 rotatably installed on the crankshaft 6, and a pull rod 17 hinged to the hinge plate 16 and fixedly connected to the connecting plate 18.

[0050] Furthermore, during the lamination forming of the stator and rotor, the motor 5 operates and drives the crankshaft 6 to rotate, thereby driving the hinge plate 16 to move. The hinge plate 16 also drives the pull rod 17 to move. Under the action of the pull rod 17, the connecting plate 18 is controlled to move. Since the guide post 3 and the guide sleeve 20 have a guiding function, it can be ensured that the pull rod 17 moves along the length direction of the guide post 3, thereby controlling the upper mold 27 to reciprocate along the length direction of the guide post 3.

[0051] Please see Figures 2-4 , Figure 6 , Figure 7 An intermittent conveying mechanism is mounted on the truss 1 and connected to the drive assembly. Symmetrically arranged conveying rollers 14 are connected to the intermittent conveying mechanism. The drive assembly can drive the conveying rollers 14 to rotate intermittently via the intermittent conveying mechanism. The intermittent conveying mechanism includes a third rotating rod 13 rotatably mounted on the fixed plate 12 and symmetrically arranged. The third rotating rod 13 is fixedly connected to the conveying rollers 14. Two meshing gears 15 are fixed to the two third rotating rods 13 respectively. A Maltese cross movement assembly connected to the third rotating rod 13 is mounted on the support plate 4. The Maltese cross movement assembly includes a first rotating rod 7 fixedly mounted on the crankshaft 6. A drive wheel 8 is fixed to the first rotating rod 7. A second rotating rod 9 is rotatably mounted on the support plate 4. A driven wheel 10 cooperating with the drive wheel 8 is fixed to the second rotating rod 9. A belt 11 connected to one of the third rotating rods 13 is sleeved on the second rotating rod 9.

[0052] Furthermore, during the lamination forming of the stator and rotor, it is necessary to control the intermittent movement of the steel plate to continuously laminate the stator and rotor. Initially, the steel sheet can be placed between the two conveying rollers 14. At this time, the crankshaft 6 rotates and controls the upper die 27 to move towards the lower die 2. After the upper die 27 engages with the lower die 2 and laminates the steel sheet, the upper die 27 moves away from the lower die 2. Simultaneously, the crankshaft 6 will also drive the first rotating rod 7 to rotate, thereby driving the drive wheel 8 to move. When the upper die 27 separates from the lower die 2, the drive wheel 8 will... It will cooperate with the driven wheel 10 to make the driven wheel 10 rotate. The driven wheel 10 will also drive the second rotating rod 9 to rotate, and control one of the third rotating rods 13 to rotate through the belt 11. This third rotating rod 13 will drive the connected conveyor roller 14 and gear 15 to rotate. Since the two gears 15 mesh with each other, the other third rotating rod 13 rotates in the opposite direction, thereby controlling the two conveyor rollers 14 to rotate in the opposite direction. Under the action of the conveyor roller 14, the steel sheet is controlled to move a certain distance after the stator and rotor are stamped, so as to facilitate the subsequent stamping and forming of the steel sheet.

[0053] Preferably, under the action of the driving wheel 8 and the driven wheel 10, after the steel sheet is stamped and formed once, and when the upper die 27 separates from the lower die 2, the conveying roller 14 rotates at a certain angle to achieve continuous stamping and forming of the stator and rotor.

[0054] Taking the embodiment combining all the features described in this application as an example, during use, when the stator and rotor are lamination formed, the motor 5 operates and drives the crankshaft 6 to rotate, thereby driving the hinge plate 16 to move. The hinge plate 16 also drives the pull rod 17 to move. Under the action of the pull rod 17, the connecting plate 18 is controlled to move, thereby driving the fixed column 19 to move. The fixed column 19 also drives the guide sleeve 20 to move along the length direction of the guide column 3 through the movable plate 21. The connecting plate 18 also drives the support sleeve 22 to move, thereby driving the movable rod 24 to move through the spring 26. The movable rod 24 also... This will cause the upper mold 27 to move towards the lower mold 2. When the upper mold 27 moves to the position where it abuts against the lower mold 2, the upper mold 27 stops moving, and the support sleeve 22 will enter the movable rod 24, causing the limit block 25 to move along the length of the slot 23 and compress the spring 26. Under the action of the upper mold 27, the steel plate placed between the upper mold 27 and the lower mold 2 is stamped. After the stamping is completed, the movable plate 21 continues to move and drives the cutting disc 28 to move. When the cutting disc 28 moves to abut against the steel plate, it cuts the stamped steel plate. At this time, the curved... Shaft 6 will drive hinge plate 16 to move toward the initial position, thereby controlling connecting plate 18 to move toward the initial position via pull rod 17, which in turn drives movable plate 21 to move, causing cutting disc 28 to separate from steel plate. Simultaneously, spring 26 is released elastically, causing movable rod 24 to move toward support sleeve 22 until limit block 25 returns to the end of its stroke on the slot 23 side. At this point, movable rod 24 will drive upper mold 27 to move toward the initial position. Simultaneously, crankshaft 6 will also drive first rotating rod 7 to rotate, thereby driving drive wheel 8 to move. After upper mold 27 separates from lower mold 2... The driving wheel 8 will cooperate with the driven wheel 10 to make the driven wheel 10 rotate. The driven wheel 10 will also drive the second rotating rod 9 to rotate, and control one of the third rotating rods 13 to rotate through the belt 11. This third rotating rod 13 will drive the connected conveyor roller 14 and gear 15 to rotate. Since the two gears 15 mesh with each other, the other third rotating rod 13 rotates in the opposite direction, thereby controlling the two conveyor rollers 14 to rotate in the opposite direction. Under the action of the conveyor rollers 14, the steel sheet is controlled to move a certain distance after the stator and rotor are stamped, so as to facilitate the subsequent stamping of the steel sheet.

Claims

1. A method for stamping stator and rotor laminations, characterized in that, Includes the following steps: Step 1: Select suitable steel and place it on the punch press; Step 2: Pull the steel to the stamping equipment, and under the action of the stamping equipment, stamp the steel to form the outline of the stator and rotor; Step 3: After stamping, the stator and rotor are plastically formed so that the working surface of the stator and rotor has a certain curvature to adapt to subsequent installation. Step 4: Perform surface treatment on the stator and rotor; The stamping equipment includes: The truss (1), and the fixing plate (12) and the lower mold (2) are fixedly installed on the truss (1). The truss (1) is also fixed with symmetrically arranged guide columns (3). The end of the guide column (3) away from the truss (1) is fixed with a support plate (4). A guide component is provided on the guide post (3), and an elastic pressing mechanism is provided on the guide component. An upper mold (27) that cooperates with the lower mold (2) is connected to the elastic pressing mechanism. A drive assembly is mounted on the support plate (4) and connected to the elastic molding mechanism. The drive assembly can drive the guide assembly to move along the length direction of the guide post (3) and adjust the engagement state of the upper mold (27) and the lower mold (2) through the elastic molding mechanism. An intermittent conveying mechanism is provided on the truss (1) and connected to the drive assembly. The intermittent conveying mechanism is connected with symmetrically arranged conveying rollers (14). The drive assembly can drive the conveying rollers (14) to rotate intermittently through the intermittent conveying mechanism. The guiding assembly includes a guide sleeve (20) slidably mounted on the guide post (3), a movable plate (21) fixed on the guide sleeve (20), and a cutting disc (28) fixed at one end of the movable plate (21) facing the truss (1). The elastic molding mechanism includes fixed columns (19) that are fixedly installed on the movable plate (21) and arranged symmetrically. A connecting plate (18) is fixed to one end of the fixed column (19) away from the movable plate (21). An elastic component connected to the upper mold (27) is provided on the connecting plate (18). The elastic component includes a support sleeve (22) fixedly installed on the connecting plate (18) and symmetrically arranged. A movable rod (24) is slidably installed inside the support sleeve (22). The movable rod (24) is fixedly connected to the upper mold (27). A spring (26) is fixed inside the support sleeve (22) and abuts against the movable rod (24). It also includes a slot (23) formed on the support sleeve (22), and a limiting block (25) fixed on the movable rod (24) and slidably connected to the slot (23); The drive assembly includes a motor (5) fixedly mounted on the support plate (4), a crankshaft (6) rotatably mounted on the support plate (4) and connected to the output shaft of the motor (5), a hinge plate (16) rotatably mounted on the crankshaft (6), and a tie rod (17) hinged on the hinge plate (16) and fixedly connected to the connecting plate (18).

2. The stator and rotor lamination stamping method according to claim 1, characterized in that, The intermittent conveying mechanism includes three rotating rods (13) rotatably mounted on the fixed plate (12) and arranged symmetrically, and the three rotating rods (13) are fixedly connected to the conveying roller (14).

3. The stator and rotor lamination stamping method according to claim 2, characterized in that, Two meshing gears (15) are fixed on the two rotating rods (13) respectively, and a Maltese cross movement assembly connected to the rotating rods (13) is provided on the support plate (4).

4. The stator and rotor lamination stamping method according to claim 3, characterized in that, The Maltese cross movement assembly includes a first rotating rod (7) fixedly mounted on the crankshaft (6), and a drive wheel (8) is fixed on the first rotating rod (7).

5. The stator and rotor lamination stamping method according to claim 4, characterized in that, A second rotating rod (9) is rotatably mounted on the support plate (4). A driven wheel (10) that cooperates with the driving wheel (8) is fixed on the second rotating rod (9). A belt (11) that is connected to one of the third rotating rods (13) is sleeved on the second rotating rod (9).

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