An automatic motor lamination single slot punching device

Abstract

This application relates to an automated unloading single-slot stamping equipment for motor laminations, belonging to the field of motor stator and rotor production. It includes a frame, a placement table rotatably mounted on the frame, a fixed shaft column mounted on the placement table, and a slotting die mounted on the frame and adjacent to the placement table. When the rotor lamination is placed on the placement table, the fixed shaft column inserts into the rotor core hole of the rotor lamination. The fixed shaft column slides relative to the placement table in a direction perpendicular to the table surface. The upper surface of the fixed shaft column can be moved to a height lower than or flush with the table surface. The frame also includes an unloading mechanism for removing the rotor lamination from the placement table. In implementation, after the slotting process is completed, the unloading mechanism controls the rotor lamination to move laterally away from the placement table, thereby achieving the unloading process, improving its convenience and smoothness, and thus increasing production efficiency.

Description

Technical Field

[0001] This application relates to the field of motor stator and rotor manufacturing, and in particular to a single-slot stamping equipment for motor laminations with automated unloading. Background Technology

[0002] The stator core is an important component that forms the magnetic flux circuit of the motor and fixes the stator coil. It is a whole composed of laminations and various fasteners. In the manufacturing process of the motor stator core, multiple core laminations need to be stacked together according to the corresponding requirements using a lamination device, and then welding and other operations are performed to obtain the required motor stator core.

[0003] The rotor core laminations are circular, with several rotor slots on their outer periphery and a rotor core hole coaxially formed in the center. These rotor slots are evenly distributed along the circumference of the laminations and are formed by stamping. Single-slot stamping of motor laminations is a process relative to double-stamping. Single-slot stamping offers advantages such as simpler mold design and manufacturing, lower cost, and easier modification, making it suitable for small-batch, multi-variety production. Because single-slot stamping uses a single punch to complete all rotor slots, the consistency of slot dimensions is higher.

[0004] In related technologies, a single-slot stamping equipment is equipped with a placement platform. A fixed shaft is fixedly connected to the center of the placement platform. The blanking material is placed on the placement platform, and the fixed shaft is inserted into the rotor core hole and fits against its hole wall. The stamping die is located next to the placement platform. The placement platform can rotate carrying the blanking material on it, so that the outer edge of the blanking material passes through the stamping die in sequence for slotting. When the placement platform rotates one revolution, the blanking material completes the rotor slot processing. In the above process, the placement and removal of the blanking material on the placement platform are all done manually. The operator removes the formed rotor blanking and places it in the finished product collection area. According to the structural characteristics of the placement platform and the rotor blanking, when the operator removes the part, the rotor blanking needs to be lifted first and then moved horizontally. During the lifting process, the friction between the fixed shaft and the rotor core hole wall must be overcome. Since the rotor blanking itself is a thin steel sheet, this operation requires high precision for manual operation, which can easily lead to a decrease in efficiency. Summary of the Invention

[0005] To address the aforementioned issues, this application provides an automated unloading single-slot stamping equipment for motor laminations.

[0006] The automated unloading single-slot stamping equipment for motor laminations provided in this application adopts the following technical solution:

[0007] An automated unloading single-slot stamping equipment for motor laminations includes a frame, a placement table rotatably mounted on the frame, a fixed shaft column mounted on the placement table, and a slotting die mounted on the frame and adjacent to the placement table. When the rotor lamination is placed on the placement table, the fixed shaft column is inserted into the rotor core hole of the rotor lamination. The fixed shaft column slides relative to the placement table in a direction perpendicular to the table surface. The upper surface of the fixed shaft column can be moved to a height lower than or flush with the table surface. The frame also includes an unloading mechanism for removing the rotor lamination from the placement table.

[0008] By adopting the above technical solution, after the stamping process of the slotting die is completed, the fixed shaft moves down to make way for the lateral movement of the rotor laminations, thereby eliminating the spatial obstruction of the fixed shaft on the rotor laminations and improving the convenience of unloading operations.

[0009] Preferably, the unloading mechanism includes a material-pushing rod located on one side of the fixed shaft column. The material-pushing rod is slidably connected to the placement platform, and the sliding direction is the radial direction of the rotor lamination. The side wall of the material-pushing rod abuts against the rotor lamination.

[0010] By adopting the above technical solution, after the stamping process of the slotting die is completed, the fixed shaft column moves down, and then the material feeding rod begins to move in a controlled manner, pushing the rotor lamination off the placement table, thus realizing the operation of removing the rotor lamination off the placement table.

[0011] Preferably, a synchronization groove is formed on the wall of the rotor core hole, and the feeding rod is located in the synchronization groove and in contact with the groove wall.

[0012] By adopting the above technical solution, during the grooving process, the cooperation between the material guide rod and the synchronous groove enables the placement table to form a synchronous rotation limit for the rotor laminations.

[0013] Preferably, the unloading mechanism further includes a receiving slide, which is connected to the frame and located on one side of the placement platform. The end of the receiving slide away from the placement platform is lower than the end near the placement platform. The material-pulling rod rotates relative to the placement platform, and its rotation axis is perpendicular to the rotation axis of the placement platform relative to the frame.

[0014] By adopting the above technical solution, when the feeding rod rotates, its top tends to tilt downwards. In conjunction with the space of the placement platform, the rotor lamination tilts vertically and is successfully fed into the receiving slide. The rotor lamination then continues to slide along the receiving slide.

[0015] Preferably, when the rotor laminations are placed on the placement table, there is a buffer gap between the bottom of the synchronous groove and the feeding rod, and the buffer gap is located on the side of the feeding rod away from the fixed shaft column; the unloading mechanism further includes a transmission block and a pushing cylinder, the transmission block is slidably connected to the placement table, the sliding direction is radial to the placement table, one end of the feeding rod is rotatably connected to the transmission block, the pushing cylinder is fixedly connected to the placement table, the transmission block is fixedly connected to the piston rod end of the pushing cylinder, and a drive motor for controlling the rotation of the feeding rod is fixedly connected to the transmission block.

[0016] Preferably, the fixed shaft column is provided with a transmission wedge surface, and the transmission block is provided with a control wedge surface. The control wedge surface is inclined upward and abuts against the transmission wedge surface.

[0017] By adopting the above technical solution, the movement of the transmission block achieves the change of force transmission through the cooperation of the wedge surface, thereby enabling the fixed-axis column to be raised and lowered.

[0018] Preferably, an electromagnet is provided on the receiving slide, and the material-pushing rod includes a main body and a material-pushing part. The main body and the material-pushing part are hinged together, and the hinge axis is parallel to the rotation axis of the main body relative to the placement platform. The material-pushing part is in contact with the rotor lamination. The material of the material-pushing part is a magnetic material. A torsion spring is provided on the hinge axis between the main body and the material-pushing part, and the material-pushing part is in contact with the electromagnet.

[0019] By adopting the above technical solution, when the feeding rod rotates to feed the rotor lamination into the receiving slide, the feeding part gradually approaches the electromagnet and is instantly accelerated by the magnetic attraction force from the electromagnet at the position near the electromagnet. As a result, the angle between the main part and the feeding part is offset, and at the same time, the feeding tendency of the rotor lamination is enhanced, and the moving speed into the receiving slide increases.

[0020] Preferably, a vibration spring is connected between the receiving slide and the frame.

[0021] By adopting the above technical solution, the presence of the vibration spring ensures that the fixing of the receiving slide and the frame is not rigid, that is, there is a condition for relative shaking between the receiving slide and the frame; when the feeding part comes into contact with the electromagnet, the vibration generated by the mutual collision between the two will cause the receiving slide to shake, further improving the smoothness of the rotor lamination sliding on the receiving slide.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. With the setting of the unloading mechanism, after the stamping of the slot die is completed, the fixed shaft column moves down to make way for the lateral movement of the rotor lamination. The material pusher starts to move in a controlled manner, pushing the rotor lamination off the placement table, sending it into the receiving slide, and then resetting it to complete a single unloading operation. Since the fixed shaft column makes contact with the space obstruction of the rotor lamination during the process, the unloading process of the rotor lamination is more convenient and labor-saving.

[0024] 2. By setting up the electromagnet and the feeding rod, the feeding rod rotates and feeds the rotor lamination into the receiving slide. The feeding part is accelerated by the magnetic force and eventually forms a relatively violent impact on the electromagnet. On the one hand, it increases the speed at which the rotor lamination enters the receiving slide. On the other hand, the vibration generated by the impact makes the receiving slide shake, which improves the smoothness of the rotor lamination sliding on the receiving slide. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a single-slot stamping equipment for motor laminations used to demonstrate automated unloading in the embodiments of this application.

[0026] Figure 2 This is a structural schematic diagram illustrating the working principle of the material feeding rod in the embodiments of this application.

[0027] Figure 3 This is a schematic diagram in the embodiments of this application, illustrating the structure of the unloading mechanism when it pushes the rotor laminations onto the receiving slide.

[0028] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Slotting die; 12. Finished product box; 13. Receiving slide; 131. Vibration spring; 132. Electromagnet; 2. Placement platform; 21. Fixed shaft column; 211. Transmission wedge surface; 3. Unloading mechanism; 31. Feeding rod; 311. Main body; 312. Feeding part; 33. Transmission block; 331. Control wedge surface; 34. Drive motor; 35. Pushing cylinder; 4. Rotor lamination; 41. Rotor core hole; 42. Synchronization slot; 421. Buffer gap. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0030] This application discloses an automated unloading single-slot stamping equipment for motor laminations, such as... Figure 1 and 2 As shown, the machine includes a frame 1, on which a placement platform 2, a punching die 11, and an unloading mechanism 3 are provided. The placement platform 2 is used to place the raw material of the rotor lamination 4. The punching die 11 is located on one side of the placement platform 2 and is used to punch grooves on the rotor lamination 4. The unloading mechanism 3 is used to remove the punched rotor lamination 4 from the placement platform 2.

[0031] like Figure 1 and 2 As shown, the placement platform 2 is rotatably connected to the frame 1, and the axis of rotation is a vertical straight line. The frame 1 is equipped with a motor (not shown in the figure) for driving the placement platform 2 to rotate. The rotor core hole 41 is coaxially opened on the raw material of the rotor lamination 4. The fixed shaft column 21 is coaxially arranged on the placement platform 2. The upper end of the fixed shaft column 21 is higher than the table surface of the placement platform 2. When the raw material of the rotor lamination 4 is placed on the placement platform 2, the rotor core hole 41 is passed through by the fixed shaft column 21, and the hole wall of the rotor core hole 41 contacts the side wall of the fixed shaft column 21. A synchronous groove 42 is formed on the rotor lamination 4 and on the wall of the rotor core hole 41. The unloading mechanism 3 includes a feeding rod 31, which is slidably connected to the placement table 2. During the grooving process, the feeding rod 31 is close to one side of the fixed shaft column 21. The length direction of the feeding rod 31 is parallel to the rotation axis of the placement table 2, and the feeding rod 31 rotates synchronously with the placement table 2. The feeding rod 31 passes through the synchronous groove 42 and contacts and abuts against the groove wall of the synchronous groove 42, thereby achieving relative stationarity between the rotor lamination 4 and the placement table 2 in the circumferential direction. The placement table 2 rotates once carrying the raw material of the rotor lamination 4, and the outer edge of the rotor lamination 4 passes through the grooving die 11 in turn for grooving processing, finally completing the processing of the rotor groove.

[0032] like Figure 1 and 2As shown, the unloading mechanism 3 also includes a transmission block 33 and a pushing cylinder 35. The pushing cylinder 35 is fixedly installed on the placement table 2. The transmission block 33 is slidably connected to the placement table 2, and the sliding direction is radial to the placement table 2. The transmission block 33 is fixedly connected to the piston rod end of the pushing cylinder 35, that is, the pushing cylinder 35 can control the transmission block 33 to move radially along the placement table 2. The material-pulling rod 31 is connected to the transmission block 33. The fixed shaft column 21 slides vertically relative to the placement table 2. After the grooving is completed, the upper surface of the fixed shaft column 21 can slide to a height lower than the table surface of the placement table 2. The pushing cylinder 35 can push and pull the transmission block 33. The transmission block 33 carries the material-pulling rod 31, and the material-pulling rod 31 then pushes the rotor lamination 4 to move laterally. When the rotor lamination 4 is placed on the placement platform 2 and the synchronizing groove 42 is passed through by the feeding rod 31, there is a buffer gap 421 between the bottom of the synchronizing groove 42 and the feeding rod 31. In this embodiment, the size of the buffer gap 421 is 6-10mm. A control wedge surface 331 is provided on the transmission block 33. The control wedge surface 331 is inclined upward. A transmission wedge surface 211 is provided on the fixed shaft column 21. When the transmission block 33 and the feeding rod 31 are both close to the side wall of the fixed shaft column 21, the transmission wedge surface 211 and the control wedge surface 331 are in close contact. The top surface of the fixed shaft column 21 is about 4-6mm higher than the upper surface of the rotor lamination 4. When the push cylinder 35 is activated and the piston rod is retracted, the transmission block 33 moves away from the axis of the placement platform 2. Under the action of gravity, the fixed shaft column 21 slowly moves down. Before the material push rod 31 contacts the bottom of the synchronous groove 42, the top surface of the fixed shaft column 21 has already dropped to a position lower than the height of the rotor lamination 4. After that, the material push rod 31 can push the rotor lamination 4 laterally to unload the material.

[0033] like Figure 1 , 2 As shown in Figure 3, the lower end of the feeding rod 31 is rotatably connected to the transmission block 33. The axis of the rotating shaft is horizontal. The unloading mechanism 3 also includes a drive motor 34, which is fixedly connected to the transmission block 33. The output shaft of the drive motor 34 is coaxially fixed with the rotating shaft of the main body 311 and the transmission block 33, that is, the drive motor 34 can control whether the main body 311 rotates or not. The unloading mechanism 3 also includes a receiving slide 13, which is connected to the frame 1 and located on one side of the placement platform 2. The receiving slide 13 is inclined, with the end closer to the placement platform 2 being higher than the end farther away from the placement platform 2. A finished product box 12 is provided on the frame 1 at the end of the receiving slide 13 that is farther away from the placement platform 2. When the feeding rod 31 rotates, its top tends to tilt downwards. With the spatial cooperation with the placement platform 2, the rotor lamination 4 tilts vertically and is successfully fed into the receiving slide 13. Then, the rotor lamination 4 continues to slide along the receiving slide 13 into the finished product box 12.

[0034] like Figure 2 and 3As shown, the feeding rod 31 is divided into a main part 311 and a feeding part 312 along its own length direction. The main part 311 is rotatably connected to the transmission block 33. The end of the main part 311 away from the transmission block 33 is hinged to the feeding part 312. The hinge axis is parallel to the rotation axis of the main part 311 relative to the transmission block 33. A torsion spring is provided on the hinge axis of the main part 311 and the feeding part 312. In the natural state, the length directions of the main part 311 and the feeding part 312 are the same. The feeding part 312 is made of iron, and an electromagnet 132 is fixedly installed on the receiving slide 13. When the feeding rod 31 rotates to feed the rotor lamination 4 into the receiving slide 13, the feeding part 312 gradually approaches the electromagnet 132 and is instantly accelerated by the magnetic attraction force from the electromagnet 132 near the position of the electromagnet 132. The main part 311 and the feeding part 312 are thus offset at an angle, and the feeding tendency of the rotor lamination 4 is enhanced, increasing the moving speed into the receiving slide 13. The fixing of the receiving slide 13 to the frame 1 is not rigid; a vibration spring 131 is connected between it and the frame 1, that is, there is a condition for relative shaking between the receiving slide 13 and the frame 1. When the feeding part 312 comes into contact with the electromagnet 132, the vibration generated by the mutual collision between the two will cause the receiving slide 13 to shake, further improving the smoothness of the sliding of the rotor lamination 4 on the receiving slide 13.

[0035] The implementation principle of a single-slot stamping equipment for automated unloading of motor laminations in this application embodiment is as follows:

[0036] During operation, the working cycle of the punching die 11, the pushing cylinder 35, the drive motor 34 and the electromagnet 132 are set. Whenever a rotor lamination 4 is processed, the transmission block 33 and the feeding rod 31 move first, the fixed shaft column 21 descends, and the rotor lamination 4 can be pushed laterally. Then the feeding rod 31 rotates to send the rotor lamination 4 into the receiving slide. At this time, the unloading operation of the rotor lamination 4 is completed. Then the electromagnet 132 stops supplying power, the feeding rod 31 and the transmission block 33 reset, and the fixed shaft column 21 rises to wait for the placement and processing of the next rotor lamination 4.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automated unloading single-slot stamping equipment for motor laminations, comprising a frame (1), a placement platform (2) rotatably mounted on the frame (1), a fixed shaft column (21) mounted on the placement platform (2), and a slotting die (11) mounted on the frame (1) and located beside the placement platform (2). When a rotor lamination (4) is placed on the placement platform (2), the fixed shaft column (21) is inserted into the rotor core hole (41) of the rotor lamination (4), characterized in that: The fixed-axis column (21) slides relative to the placement table (2), and the sliding direction is perpendicular to the table surface of the placement table (2). The upper surface of the fixed-axis column (21) can be moved to a height lower than or level with the table surface of the placement table (2). The frame (1) is also provided with a unloading mechanism (3), which is used to make the rotor laminations (4) leave the placement table (2). The unloading mechanism (3) includes a material-pushing rod (31), which is located on one side of the fixed shaft column (21). The material-pushing rod (31) is slidably connected to the placement platform (2), and the sliding direction is the radial direction of the rotor lamination (4). The side wall of the material-pushing rod (31) abuts against the rotor lamination (4). The rotor core hole (41) has a synchronous groove (42) on its hole wall, and the feeding rod (31) is located in the synchronous groove (42) and in contact with the groove wall of the synchronous groove (42); The unloading mechanism (3) also includes a receiving slide (13), which is connected to the frame (1) and located on one side of the placement platform (2). The end of the receiving slide (13) away from the placement platform (2) is lower than the end close to the placement platform (2). The material pusher (31) rotates relative to the placement platform (2), and its rotation axis is perpendicular to the rotation axis of the placement platform (2) relative to the frame (1). When the rotor lamination (4) is placed on the placement platform (2), there is a buffer gap (421) between the bottom of the synchronous groove (42) and the feeding rod (31), and the buffer gap (421) is located on the side of the feeding rod (31) away from the fixed shaft column (21). The unloading mechanism (3) further includes a transmission block (33) and a pushing cylinder (35). The transmission block (33) is slidably connected to the placement platform (2), and the sliding direction is the radial direction of the placement platform (2). One end of the material-pulling rod (31) is rotatably connected to the transmission block (33). The pushing cylinder (35) is fixedly connected to the placement platform (2). The transmission block (33) is fixedly connected to the piston rod end of the pushing cylinder (35). A drive motor (34) for controlling the rotation of the material-pulling rod (31) is fixedly connected to the transmission block (33). The fixed axis column (21) is provided with a transmission wedge surface (211), and the transmission block (33) is provided with a control wedge surface (331). The control wedge surface (331) is inclined upward and abuts against the transmission wedge surface (211).

2. The automated unloading single-slot stamping equipment for motor laminations according to claim 1, characterized in that: An electromagnet (132) is provided on the receiving slide (13). The feeding rod (31) includes a main body (311) and a feeding part (312). The main body (311) and the feeding part (312) are hinged together. The hinge axis is parallel to the rotation axis of the main body (311) relative to the placement platform (2). The feeding part (312) is in contact with the rotor lamination (4). The feeding part (312) is made of magnetic material. A torsion spring is provided on the hinge axis of the main body (311) and the feeding part (312). The feeding part (312) is in contact with the electromagnet (132).

3. The automated unloading single-slot stamping equipment for motor laminations according to claim 2, characterized in that: A vibration spring (131) is connected between the receiving slide (13) and the frame (1).

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