A continuous punching device for rotor punching sheet of an electric machine

Abstract

The present application relates to the technical field of blanking device, disclose a kind of rotor punching sheet continuous blanking device for motor, including blanking device ontology and double-section sleeve, the double-section sleeve includes sleeve one, sleeve two and lift cylinder, the sleeve one is set on sleeve two, lift cylinder is fixedly installed on conveying mechanism two, for driving sleeve two lifting, one end of the conveying mechanism one is provided with clamping mechanism, and the clamping mechanism is used to clamp sleeve one.The rotor punching sheet continuous blanking device for motor, through the precise joint separation of sleeve one and sleeve two through groove, cooperate clamping mechanism, punching sheet is first set sleeve one again falls to sleeve two stack, and punching sheet is stacked to set quantity, jaw clamps sleeve one, sleeve two moves down and feeds, during punching sheet can continue to set sleeve one, reset punching sheet falls, save time, realize continuous collection, ensure operation coherent, avoid punching sheet damage, improve efficiency.

Description

Technical Field

[0001] This invention relates to the field of blanking equipment technology, and more specifically, to a continuous blanking device for rotor laminations for motors. Background Technology

[0002] Rotor laminations for motors are the core stamped components of the motor rotor core. They are generally made of silicon steel sheets through precision stamping and are the basic unit constituting the motor rotor. Multiple laminations are stacked to form the rotor core, which is used for magnetic conduction, torque transmission, and ensuring motor operating efficiency. Their production often uses continuous stamping equipment to achieve automated processing. This equipment integrates three major functional modules: stamping, conveying, and collecting. The high-speed stamping die completes the synchronous forming of the lamination shape, shaft hole, and heat dissipation groove. The automatic conveying mechanism smoothly feeds the blanks and discharges the finished products. Then, the positioning sleeve neatly stacks and stores the formed laminations. The entire process is continuous and efficient, which can effectively ensure the dimensional accuracy and consistency of the laminations, improve production efficiency, reduce processing errors, and meet the requirements of motor assembly for rotor structural strength and magnetic performance.

[0003] In existing rotor lamination continuous blanking production lines, finished laminations are typically stacked and collected using positioning sleeves. Once the number of laminations on the sleeves reaches a set quantity, the sleeves move downwards to detach from the lamination group. The stacked laminations are then conveyed to the next process by a conveyor belt. However, this equipment operates continuously, with the blanking and conveying processes running without interruption. During the gap when the sleeves descend to unload, subsequent laminations are continuously conveyed to the original collection position. At this time, the sleeves have already moved down and cannot limit or receive the newly arrived laminations, causing them to easily scatter and accumulate or even fall off. To avoid damage to the laminations, operators must manually remove them within this time frame. This is not only time-consuming and labor-intensive, but also prone to collisions, scratches, or deformation if not removed in time, resulting in product scrap. This affects production efficiency and makes it difficult to guarantee the stability of lamination quality.

[0004] Therefore, the present invention proposes a continuous punching device for rotor laminations of motors. Summary of the Invention

[0005] In view of this, the present invention provides a continuous punching device for rotor laminations of motors to solve the problem that existing sleeves cannot be collected when descending.

[0006] In a first aspect, this application provides a continuous punching device for rotor laminations of motors, comprising: a punching device body and a double-segment sleeve, wherein a first conveying mechanism is provided on one side of the punching device body, a second conveying mechanism is provided at the end of the first conveying mechanism away from the punching device body, and the double-segment sleeve is disposed on the second conveying mechanism. The dual-segment sleeve includes a first sleeve, a second sleeve, and a lifting cylinder. The first sleeve is mounted on the second sleeve, and the lifting cylinder is fixedly installed on the second conveying mechanism to drive the second sleeve to move up and down. One end of the first conveying mechanism is provided with a clamping mechanism for clamping the first sleeve.

[0007] Furthermore, the bottom of the first sleeve is provided with a groove, the diameter of the second sleeve is smaller than the diameter of the first sleeve, and the groove is adapted to the top of the second sleeve.

[0008] Furthermore, the clamping mechanism is configured as two sets, each clamping mechanism including a clamping cylinder, the clamping cylinder being fixedly installed on the lower side of the first conveying mechanism, a piston rod being provided at the end of the clamping cylinder near the first sleeve, and a gripper being fixedly installed at the end of the piston rod away from the clamping cylinder.

[0009] Furthermore, a slot is provided on the side of the gripper near the sleeve, and the inner wall of the slot is in contact with the outer wall of the sleeve.

[0010] Furthermore, a boss is provided on the upper surface of the gripper, and a roller is rotatably mounted inside the boss.

[0011] Compared to the background technology description, the aforementioned continuous punching device for motor rotor laminations, in practical applications, utilizes a two-section sleeve system where sleeve one and sleeve two work together. The bottom groove of sleeve one matches the top of sleeve two, achieving precise engagement and disengagement. Simultaneously, two clamping mechanisms are employed. The laminations are first fitted onto sleeve one and then fall onto sleeve two for stacking. When the laminations reach a set quantity, the clamping cylinder of the clamping mechanism drives the piston rod to move the gripper, which securely clamps sleeve one by adhering to the outer wall of sleeve one through a slot. Subsequently, the lifting cylinder moves sleeve two downwards to disengage from the laminations. At this time, the laminations continuously conveyed by the first conveying mechanism can still be fitted onto the clamped sleeve one. The rollers on the gripper reduce friction on the laminations. After sleeve two resets and engages, the gripper retracts, and the laminations fall onto sleeve two. This saves time during the descent of a single sleeve structure, allowing for continued collection of laminations, ensuring continuous operation of the device, preventing damage from lamination accumulation, and improving production efficiency.

[0012] Furthermore, both sides of the first conveying mechanism near the second conveying mechanism are provided with limiting mechanisms. The limiting mechanism includes a fixed plate, a threaded rod is threadedly installed on one side of the fixed plate, an arc-shaped baffle is rotatably installed on the end of the threaded rod near the first sleeve, and a handle is provided on the end of the threaded rod away from the arc-shaped baffle.

[0013] Furthermore, the two arc-shaped baffles are arranged in a relatively inclined state, with the two arc-shaped baffles inclined in opposite directions, and the opposite sides of the two arc-shaped baffles form a guide limiting channel that gradually narrows toward the stamping conveying direction.

[0014] Furthermore, a guide rod is slidably installed on the other side of the fixed plate, and one end of the guide rod is fixedly connected to the arc-shaped baffle.

[0015] Compared to the background technology description, the aforementioned continuous blanking device for rotor laminations of motors, in practical applications, utilizes two arc-shaped baffles in the limiting mechanisms on both sides of the conveying mechanism. These baffles are set in a relatively inclined and opposite direction, forming a guide limiting channel that gradually narrows towards the lamination conveying direction. When the lamination is conveyed to this channel, both sides contact the inner wall of the arc-shaped baffles. The arc-shaped baffles generate a lateral guiding force to restrict the lateral displacement of the lamination, and the front end tightening structure restricts the lamination stroke, ensuring that the lamination stops precisely above the sleeve. This achieves precise fitting of the lamination to the sleeve, preventing lamination deviation that could lead to fitting failure or damage, ensuring the accuracy and stability of lamination collection, and meeting the operational requirements of continuous lamination conveying.

[0016] Furthermore, a stamping mechanism is provided on the side of the blanking device body near the first conveying mechanism, and a stamping table is provided on the blanking device body below the stamping mechanism. The stamping table and the blanking device body are set on the same horizontal plane, and a push plate is provided on the stamping table. The push plate is driven by a cylinder.

[0017] Furthermore, conveyor belts are provided on both sides of the upper end of the second conveying mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram showing the positions of the first and second conveying mechanisms provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of a partial side structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a partial structure on the other side provided in an embodiment of the present invention; Figure 5 This is a schematic diagram showing the separation of sleeve one and sleeve two provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the overall structure of the clamping mechanism provided in an embodiment of the present invention; Figure 7 Provided for embodiments of the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 8 This is a top view of the limiting mechanism provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Blanking device body; 11. Stamping mechanism; 12. Stamping table; 13. Push plate; 2. Conveying mechanism one; 3. Conveying mechanism two; 31. Conveyor belt; 4. Two-stage sleeve; 41. Sleeve one; 42. Sleeve two; 43. Lifting cylinder; 5. Clamping mechanism; 51. Clamping cylinder; 52. Piston rod; 53. Gripper; 531. Boss; 532. Roller; 54. Slot; 6. Limiting mechanism; 61. Fixing plate; 62. Threaded rod; 63. Arc-shaped baffle; 64. Handle; 65. Guide rod. Detailed Implementation

[0020] The core of this invention is to provide a continuous punching device for rotor laminations of motors, so as to solve the problem of continuous punching devices for rotor laminations of motors.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0022] Please see Figures 1-8 This invention provides a continuous blanking device for rotor laminations of motors, including a blanking device body 1 and a double-segment sleeve 4. A conveying mechanism 1 2 is provided on one side of the blanking device body 1, and a conveying mechanism 2 3 is provided at the end of the conveying mechanism 1 2 away from the blanking device body 1. The double-segment sleeve 4 is disposed on the conveying mechanism 2 3. A stamping mechanism 11 is provided on the side of the blanking device body 1 near the conveying mechanism 1 2. A stamping table 12 is provided on the blanking device body 1 below the stamping mechanism 11. The stamping table 12 and the blanking device body 1 are set at the same horizontal plane. A push plate 13 is provided on the stamping table 12 and is driven by a cylinder 3. Conveyor belts 31 are provided on both sides of the upper end of the conveying mechanism 2 3.

[0023] It should be noted that the conveying mechanism 2 is used to transport the stamped blanks from the blanking device body 1 to the subsequent collection position, and the double-segment sleeve 4 is used to stack and collect the blanks transported here. The stamping mechanism 11 provides stamping power for the stamping process and is used to stamp the blank into rotor stampings; the stamping table 12 and the blanking device body 1 are set on the same horizontal plane, providing a flat and stable processing reference surface for stamping; the push plate 13 is driven by the cylinder three, which provides linear driving force to drive the push plate 13 to reciprocate. After the blanking blank is positioned on the stamping table 12, pressure is applied downwards by the stamping mechanism 11 to complete the stamping process. After processing, cylinder three starts and drives push plate 13 to move towards conveying mechanism one 2, pushing the blanking blank on the stamping table 12 onto conveying mechanism one 2. Conveying mechanism one 2 conveys the blanking blank to a position close to the double-segment sleeve 4 through its own transmission action. The double-segment sleeve 4 accurately stacks and arranges the continuously conveyed blanking blanks. When the blanking blanks are stacked to a set number, the double-segment sleeve 4 releases the blanking blanks, which fall onto conveying mechanism two 3. Finally, the neatly arranged blanking blanks are conveyed to the designated position by the conveyor belts 31 on both sides, realizing the continuous stamping and subsequent conveying operation of rotor blanking blanks.

[0024] like Figures 1-8 The bottom of sleeve 41 is provided with a groove, and the diameter of sleeve 42 is smaller than that of sleeve 41. The groove is adapted to the top of sleeve 42. The clamping mechanism 5 is configured as two sets. The clamping mechanism 5 includes a clamping cylinder 51. The clamping cylinder 51 is fixedly installed on the lower side of the conveying mechanism 2. A piston rod 52 is provided at the end of the clamping cylinder 51 near sleeve 41. A gripper 53 is fixedly installed at the end of the piston rod 52 away from the clamping cylinder 51. A slot 54 is provided on the side of the gripper 53 near sleeve 41. The inner wall of the slot 54 fits against the outer wall of sleeve 41. A boss 531 is provided on the upper surface of the gripper 53. A roller 532 is rotatably installed inside the boss 531.

[0025] It should be noted that the double-segment sleeve 4 includes a first sleeve 41 and a second sleeve 42. A groove is provided at the bottom of the first sleeve 41. The diameter of the second sleeve 42 is smaller than that of the first sleeve 41. This groove is adapted to the top of the second sleeve 42 to achieve precise engagement and disengagement of the first sleeve 41 and the second sleeve 42. Two sets of clamping mechanisms 5 are also provided. Each clamping mechanism 5 includes a clamping cylinder 51, which is fixedly installed on the lower side of the first conveying mechanism 2 as the power source for the clamping action. A piston rod 52 is provided at the end of the clamping cylinder 51 closest to the first sleeve 41. The piston rod 52 can perform linear extension and retraction under the drive of the clamping cylinder 51. A gripper 53 is fixedly installed at the end of the piston rod 52 furthest from the clamping cylinder 51. The gripper 53 is used to directly clamp the first sleeve 41. A groove 54 is provided on the side of the gripper 53 near the first sleeve 41. The inner wall of the groove 54 fits against the outer wall of the first sleeve 41 to ensure stability during clamping and prevent the first sleeve 41 from shifting. A boss 531 is provided on the upper surface of the gripper 53. A roller 532 is rotatably mounted inside the boss 531. The roller 532 can rotate around its own axis to reduce friction with the punch. After the punch is conveyed to the designated position by the first conveyor mechanism 2, it is first fitted onto the first sleeve 41, then falls onto the second sleeve 42, until it lands on the conveyor belt 31 of the second conveyor mechanism 3. The punches are stacked on the second sleeve 42. It should be noted that the height of the stacked punches should not exceed the top of the second sleeve 42 to avoid… When conveyor belt 31 transports the laminations, the upper laminations are blocked by sleeve 41 and fall, ensuring the stability of the lamination transport. When the laminations are stacked to a set number, clamping cylinder 51 is activated, driving piston rod 52 to extend towards sleeve 41, thereby driving gripper 53 to approach sleeve 41. Through the contact of groove 54 with the outer wall of sleeve 41, the lower end of sleeve 41 is firmly clamped, preventing sleeve 41 from shifting in subsequent actions. Then, lifting cylinder 43 connected to sleeve 42 is activated, providing lifting power and driving sleeve 42 to move downward, separating sleeve 42 from the groove at the bottom of sleeve 41, until sleeve 42 is completely detached from the stacked laminations. At this time, conveyor mechanism 2 3... The conveyor belt 31 starts and transports the neatly stacked blanks to the designated area. After the blanks are transported, the lifting cylinder 43 starts again and drives the sleeve 2 42 to move upward until the top of the sleeve 2 42 is precisely engaged with the groove at the bottom of the sleeve 1 41, restoring the initial collection state. While the gripper 53 continues to hold the sleeve 1 41, the conveyor mechanism 2 continues to transport the blanks. These blanks will continue to be fitted on the sleeve 1 41, and the bottom blank will press on the roller 532 of the gripper 53. The roller 532 is set in a long strip shape. Its function is to reduce the friction between the gripper and the blank by rotating itself when the gripper 53 retracts, so as to avoid friction and jamming between the gripper 53 and the blank, and prevent the blanks from being scratched or deformed.After sleeve 2 42 and sleeve 1 41 are fully engaged, the clamping cylinder 51 drives the piston rod 52 to retract, causing the gripper 53 to move away from the surface of sleeve 1 41, releasing the grip on sleeve 1 41. At this time, the laminations fitted on sleeve 1 41 will fall smoothly onto sleeve 2 42, entering the next round of stacking and collection process, ensuring the continuity of the device's operation.

[0026] like Figures 1-8 Each of the two ends of the conveying mechanism 1 2 near the conveying mechanism 2 3 is provided with a limiting mechanism 6. The limiting mechanism 6 includes a fixed plate 61. A threaded rod 62 is threadedly installed on one side of the fixed plate 61. An arc-shaped baffle 63 is rotatably installed on the end of the threaded rod 62 near the sleeve 1 41. A handle 64 is provided on the end of the threaded rod 62 away from the arc-shaped baffle 63. The two arc-shaped baffles 63 are set in a relatively inclined state, and the two arc-shaped baffles 63 are inclined in opposite directions. The opposite sides of the two arc-shaped baffles 63 form a guide limiting channel that gradually narrows towards the stamping conveying direction. A guide rod 65 is slidably installed on the other side of the fixed plate 61. One end of the guide rod 65 is fixedly connected to the arc-shaped baffle 63.

[0027] It should be noted that the limiting mechanism 6 is used to guide and limit the punch, ensuring that the punch can be accurately conveyed to the top of the sleeve 41 and fitted into place, thus ensuring the accuracy of the collection process. The fixing plate 61 is the mounting carrier of the limiting mechanism 6, used to fix the entire limiting mechanism 6 on the conveying mechanism 2. The threaded rod 62 can move axially through thread transmission, and the handle 64 is used to facilitate the operator to rotate the threaded rod 62, reducing the difficulty of operation. Two arc-shaped baffles 63 are set in a relatively inclined state with opposite inclination directions. Their opposite sides form a guide and limiting channel that gradually narrows towards the stamping conveying direction. The structural design of this channel can realize the step-by-step guidance and positioning of the stamping. At the same time, the guide rod 65 provides guidance for the movement of the arc-shaped baffles 63, prevents the arc-shaped baffles 63 from deviating during the movement, and ensures the stability of its movement trajectory. When the punch is conveyed by the conveyor mechanism 2 to a position near the sleeve 41, it will enter the guide and limiting channel formed by the two arc-shaped baffles 63. The two sides of the punch will contact the inner walls of the two arc-shaped baffles 63 respectively. As the channel gradually narrows in the direction of punch conveying, the arc-shaped baffles 63 will generate a lateral guiding force on the punch, limiting the lateral displacement of the punch. At the same time, the structure of its front end tightening can limit the stroke of the punch, so that the punch stops precisely when it moves to the top of the sleeve 41, thereby ensuring that the punch can be accurately fitted onto the sleeve 41, avoiding the punch offset causing fitting failure or damage to the punch. When it is necessary to adjust the distance between the two arc-shaped baffles 63 according to the size of the lamination, the operator turns the handle 64 to drive the threaded rod 62 to rotate. By utilizing the threaded engagement between the threaded rod 62 and the fixed plate 61, the threaded rod 62 drives the arc-shaped baffles 63 to move along the guide direction of the guide rod 65, thereby enabling the two arc-shaped baffles 63 to move closer or further apart, completing the distance adjustment to adapt to rotor laminations of different sizes and ensuring the versatility and accuracy of the limiting mechanism 6.

[0028] To help those skilled in the art better understand the beneficial effects of the two-segment sleeve 4 and the clamping mechanism 5, their specific working principles are briefly explained below: In use, the blank is first positioned on the stamping table 12, and the stamping mechanism 11 applies downward pressure to stamp the blank into a rotor blank. After processing, the cylinder 3 starts and drives the push plate 13 to move towards the conveying mechanism 2, pushing the blank on the stamping table 12 onto the conveying mechanism 2. Subsequently, the conveying mechanism 2, through its own transmission action, conveys the punch to a position close to the double-segment sleeve 4. During this process, the punch enters the guide limiting channel formed by the two arc-shaped baffles 63 of the limiting mechanism 6 on both sides of the conveying mechanism 2. The arc-shaped baffles 63 guide and limit the punch, so that the punch stops precisely above the sleeve 41 and is fitted into place. The blanking is first fitted onto sleeve 41, then falls onto sleeve 42 and stacks on its surface. The stacking height is not higher than the upper end of sleeve 42. When the blanking is stacked to a set number, the clamping cylinder 51 of the clamping mechanism 5 drives the piston rod 52 to drive the gripper 53, which uses the slot 54 to fit against the outer wall of sleeve 41 and firmly clamp sleeve 41. Next, the lifting cylinder 43 connected to the second sleeve 42 is started, driving the second sleeve 42 to move downward and disengage from the punch. At this time, the conveyor belt 31 on the second conveyor mechanism 3 starts, transporting the neatly stacked punches to the designated area. After the punches are transported, the lifting cylinder 43 drives the second sleeve 42 to move upward and precisely engage with the bottom groove of the first sleeve 41 to reset. During this process, the blanks continuously conveyed by the conveying mechanism 2 continue to be fitted onto the clamped sleeve 41, with the bottom blank pressing on the roller 532 of the gripper 53 to reduce friction; after the sleeve 42 is reset, the clamping cylinder 51 drives the gripper 53 to retract, and the blanks on the sleeve 41 fall onto the sleeve 42, entering the next round of stacking and collection, realizing continuous punching and conveying operations of the device.

[0029] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A continuous punching device for rotor laminations of electric motors, characterized in that, include: The blanking device body (1) and the double-segment sleeve (4) are provided. A first conveying mechanism (2) is provided on one side of the blanking device body (1). A second conveying mechanism (3) is provided at the end of the first conveying mechanism (2) away from the blanking device body (1). The double-segment sleeve (4) is provided on the second conveying mechanism (3). The double-segment sleeve (4) includes a first sleeve (41), a second sleeve (42), and a lifting cylinder (43). The first sleeve (41) is sleeved on the second sleeve (42). The lifting cylinder (43) is fixedly installed on the second conveying mechanism (3) and is used to drive the second sleeve (42) to rise and fall. One end of the first conveying mechanism (2) is provided with a clamping mechanism (5), which is used to clamp the first sleeve (41).

2. The continuous punching device for rotor laminations of motors as described in claim 1, characterized in that, The bottom of the first sleeve (41) is provided with a groove, and the diameter of the second sleeve (42) is smaller than the diameter of the first sleeve (41). The groove is adapted to the top of the second sleeve (42).

3. The continuous punching device for rotor laminations of motors as described in claim 1, characterized in that, The clamping mechanism (5) is configured in two sets. The clamping mechanism (5) includes a clamping cylinder (51). The clamping cylinder (51) is fixedly installed on the lower side of the first conveying mechanism (2). A piston rod (52) is provided at one end of the clamping cylinder (51) near the first sleeve (41). A gripper (53) is fixedly installed at one end of the piston rod (52) away from the clamping cylinder (51).

4. The continuous punching device for rotor laminations of motors as described in claim 3, characterized in that, The gripper (53) has a slot (54) on the side near the sleeve (41), and the inner wall of the slot (54) is in contact with the outer wall of the sleeve (41).

5. The continuous punching device for rotor laminations of motors as described in claim 3, characterized in that, The upper surface of the gripper (53) is provided with a boss (531), and a roller (532) is rotatably installed inside the boss (531).

6. The continuous punching device for rotor laminations of motors as described in claim 1, characterized in that, The first conveying mechanism (2) is provided with limiting mechanisms (6) on both sides of the end near the second conveying mechanism (3). The limiting mechanism (6) includes a fixed plate (61). A threaded rod (62) is threadedly installed on one side of the fixed plate (61). An arc-shaped baffle (63) is rotatably installed on the end of the threaded rod (62) near the first sleeve (41). A handle (64) is provided on the end of the threaded rod (62) away from the arc-shaped baffle (63).

7. The continuous punching device for rotor laminations of motors as described in claim 6, characterized in that, The two arc-shaped baffles (63) are set in a relatively inclined state, the two arc-shaped baffles (63) are inclined in opposite directions, and the opposite sides of the two arc-shaped baffles (63) form a guide limiting channel that gradually shrinks toward the stamping conveying direction.

8. The continuous punching device for rotor laminations of motors as described in claim 1, characterized in that, A guide rod (65) is slidably installed on the other side of the fixed plate (61), and one end of the guide rod (65) is fixedly connected to the arc-shaped baffle (63).

9. The continuous punching device for rotor laminations of motors as described in claim 1, characterized in that, The blanking device body (1) is provided with a stamping mechanism (11) on the side near the conveying mechanism (2). A stamping table (12) is provided on the blanking device body (1) below the stamping mechanism (11). The stamping table (12) and the blanking device body (1) are set on the same horizontal plane. A push plate (13) is provided on the stamping table (12). The push plate (13) is driven by a cylinder.

10. The continuous punching device for rotor laminations of electric motors as described in claim 1, characterized in that, Conveyor belts (31) are provided on both sides of the upper end of the second (3) conveyor mechanism.

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