Stator lamination positioning device

Abstract

The present application discloses a stator lamination positioning device, which relates to the technical field of motor processing, including a workbench, the workbench is placed horizontally, and the top surface of the workbench is provided with a vertical and spaced rotating drum and a positioning column, the rotating drum is rotatably connected to the workbench, the rotating drum is used to sleeve the laminations to drive the laminations to rotate, and the bottom of the workbench is provided with a first driving source for driving the rotating drum to rotate; the positioning column is provided with a positioning block near one end of the rotating drum, and the positioning block is used to cooperate with the notch on the outer periphery of the lamination to position the lamination; the top surface of the workbench is also provided with two vertical guide columns, the two guide columns are symmetrically distributed along the axis of the rotating drum, and the two guide columns are both slidably connected with a horizontal support plate, the two support plates are symmetrically arranged along the axis of the rotating drum, and the guide columns are also provided with a driving assembly for driving the support plate to reciprocate in the vertical direction, and the support plate is used to receive the laminations. The present application has the effect of improving the positioning efficiency of the stator laminations.

Description

Technical Field

[0001] The present application relates to the technical field of motor processing, and in particular to a stator lamination positioning device. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It can be divided into DC motors, asynchronous motors, and synchronous motors according to their structure and working principle. The motor consists of a stator, a rotor, and other accessories. Different types of motors have slightly different specific components. A permanent magnet DC motor consists of a stator pole, a rotor, a brush, a housing, etc. The stator pole uses a permanent magnet (permanent magnetic steel), such as ferrite, aluminum nickel cobalt, and neodymium iron boron. A brushless DC motor consists of a permanent magnet rotor, a multi-pole winding stator, a position sensor, etc. A single-phase asynchronous motor consists of a stator, a rotor, a bearing, a housing, and an end cover.

[0003] The stator core is an important part of the motor's magnetic circuit. Its main function is to form the motor's magnetic circuit and pass current through the stator winding to generate a rotating magnetic field to drive the rotor to rotate. In order to avoid the changing magnetic flux generating induced current in the core, causing the core to heat up and resulting in large eddy current losses, the stator core is usually formed by stacking multiple stator laminations with the same shape. First, multiple stator laminations are punched out into the same shape, and then the multiple laminations are stacked together for the final stacking or welding, so that the laminations are tightly combined.

[0004] After the stator laminations are stamped, they need to be neatly stacked together for lamination. During the entire lamination process, the stator laminations need to be positioned and aligned before the stamping process. The current method of positioning and aligning the stator laminations requires manual stacking of the stator laminations one by one and alignment through the notches on the outer periphery of the laminations. The efficiency of the entire positioning and alignment is too low. Summary of the invention

[0005] In order to improve the situation where the positioning efficiency of stator laminations is too low during the alignment process, the present application provides a stator lamination positioning device.

[0006] The present application provides a stator lamination positioning device, which adopts the following technical solution:

[0007] A stator lamination positioning device comprises a workbench, the workbench is placed horizontally, a top surface of the workbench is provided with a rotating drum and positioning columns which are placed vertically and spaced apart, the rotating drum is rotatably connected to the workbench, the rotating drum is used to sleeve the laminations to drive the laminations to rotate, and a first driving source for driving the rotating drum to rotate is provided at the bottom of the workbench;

[0008] The positioning column is provided with a positioning block at one end close to the rotating drum, and the positioning block is used to cooperate with the notch on the outer periphery of the stack to position the stack;

[0009] The top surface of the workbench is also provided with two vertical guide columns, which are symmetrically distributed along the axis of the rotating drum. The two guide columns are slidably connected with a horizontal support plate, and the two support plates are symmetrically arranged along the axis of the rotating drum. The guide columns are also provided with a driving assembly for driving the support plate to reciprocate in the vertical direction, and the support plate is used to receive the stacked sheets.

[0010] By adopting the above technical scheme, when the stator laminations are aligned, the first driving source first causes the drum to rotate rapidly, at which time the stator laminations are sleeved on the drum, and the stator laminations fall by their own gravity until the bottom is against the positioning block. The stator laminations rub against the outer wall of the drum during the falling process, so that the positioning laminations slowly rotate with the drum while falling. During the rotation of the positioning laminations, when the laminations at the bottom rotate until the notch corresponds to the positioning block, the laminations maintain the cooperation between their own notches and the positioning block and fall along the drum to the support plate. When the notches of all the laminations match the positioning block, the driving assembly drives the support plate to drive the laminations that continue to be aligned to rise until they are separated from the drum, at which time the laminations can be taken out, and the entire alignment and unloading process is performed automatically, which greatly improves the efficiency of lamination positioning.

[0011] Optionally, the driving assembly includes a second driving source and a first screw rod, the first screw rod is vertically arranged, the first screw rod passes through the support plate and is threadedly connected to the support plate, one end of the first screw rod is rotatably connected to the guide column, and the other end of the first screw rod is coaxially fixed to the output shaft of the second driving source.

[0012] By adopting the above technical solution, the output shaft of the second driving source drives the first screw to rotate, and the first screw drives the support plate threadedly connected to it to move in the vertical direction. The forward and reverse rotation of the second driving source can control the rise or fall of the support plate, and the guide column provides guide support for the movement of the support plate.

[0013] Optionally, a gravity sensor is disposed on the top surface of the support block, and the gravity sensor is used to receive the stack and feed back the weight of the stack to an external control unit.

[0014] By adopting the above technical solution, after the first stack is aligned, it slides along the rotating drum to the gravity sensing sensor. At this time, the gravity sensing sensor is under pressure and sends a signal to the external control unit. At this time, the support plate begins to descend at a uniform speed until the weight of the stacked stack reaches the preset pressure value of the gravity sensing sensor. At this time, the support plate stops descending and starts to move upward after a period of time to perform the unloading action.

[0015] Optionally, an auxiliary support member is disposed on the top surface of the support block, the auxiliary support member is disposed around the gravity sensing sensor, and the top surface of the auxiliary support member is lower than the top surface of the gravity sensing sensor.

[0016] By adopting the above technical solution, if the weight of the stack is too heavy or other emergencies occur, the gravity sensing sensor is completely pressed into the auxiliary support member. At this time, the auxiliary support member completely provides upward support force for the stack, reducing damage to the gravity sensing sensor.

[0017] Optionally, an infrared transmitter is provided on the side of the support plate, and an infrared receiver is provided on the top surface of the workbench. The positions of the infrared transmitter and the infrared receiver correspond to each other. When the infrared receiver and the infrared transmitter are in the same horizontal plane, the infrared receiver can receive the signal emitted by the infrared transmitter.

[0018] By adopting the above technical solution, if the gravity sensing sensor fails, when the support plate descends to the point where the infrared receiver and the infrared transmitter reach the same horizontal plane, the infrared receiver receives the infrared rays emitted by the infrared transmitter, and the infrared receiver sends a signal to the external control unit. At this time, the support plate stops descending, and the infrared transmitter and the infrared receiver play a secondary protection role.

[0019] Optionally, a guide block is provided on the top of the guide column, the guide block extends toward the rotating drum, the height of the guide block in the vertical direction is greater than the height of the positioning block, and the end of the guide block away from the guide column is used to contact the outer periphery of the lamination.

[0020] By adopting the above technical solution, when the support plate drives the positioned stack to rise, and until the stack is out of the limit of the positioning block, the guide block contacts the stack, so that the guide block provides a limiting effect on the stack, so that the stack can always be limited during the entire rising process, and the stack can always remain neatly stacked.

[0021] Optionally, the guide block is rotatably connected to a roller near one end of the rotating drum, the rotation axis of the roller is horizontal, and the outer wall of the roller is used to contact the outer periphery of the laminate.

[0022] By adopting the above technical solution, the stack contacts the roller when passing through the guide block. The roller can not only limit the support plate, but also reduce the friction between the stack and the stack, thereby improving the passability of the stack.

[0023] Optionally, two correcting blocks are slidably connected to the side wall of the rotating drum, and the two correcting blocks are symmetrically arranged along the axis of the rotating drum. The two correcting blocks can move toward or away from each other radially along the rotating drum, and a third driving source for driving the correcting blocks to move is also arranged between the two correcting blocks.

[0024] By adopting the above technical solution, when all the stacking sheets are positioned, the support plate stops descending. At this time, the third driving source simultaneously drives the two correcting blocks to move away from each other, that is, the two correcting blocks move toward the outside of the drum at the same time until the correcting blocks abut against the inner walls of the stacked stacking sheets. Since the inner ring diameter of the stacking sheets is slightly larger than the outer diameter of the drum, there may be radial offset after the stacking of the stacking sheets. At this time, the correcting blocks abut against the inner walls of the stacking sheets and push the stacking sheets to move until all the stacking sheets are aligned radially.

[0025] Optionally, a wear-resistant strip is sleeved on the side wall of the positioning block close to one end of the rotating drum, and the wear-resistant strip is coated on the side wall of the positioning block.

[0026] By adopting the above technical solution, during the alignment process of the laminations, the laminations are in contact with the wear-resistant strips, and the wear-resistant strips can effectively reduce the scratches and wear on the laminations and reduce the damage to the surface of the laminations.

[0027] Optionally, the guide column is slidably connected to the workbench, and a horizontal second screw rod is threadedly connected to the bottom of the guide column. The workbench is also provided with a fourth driving source for driving the second screw rod to rotate, one end of the second screw rod is rotatably connected to the guide column, and the other end of the second screw rod is coaxially fixed to the fourth driving source.

[0028] By adopting the above technical solution, the guide posts can move under the cooperative driving of the fourth driving source and the second screw rod, so that the spacing between the guide posts can be dynamically adjusted to adapt to the positioning work of stacked sheets of different sizes.

[0029] In summary, the present application includes at least one of the following beneficial effects:

[0030] 1. The stack is driven by a rotating drum and positioned by a positioning block, so that the stack alignment process is automatically carried out, effectively improving the efficiency of stack alignment;

[0031] 2. By adopting symmetrical guide columns arranged on the circumference of the drum, a support plate is slidably connected to the guide columns, and the support plate can provide support for the stacked sheets. At the same time, after the stacked sheets are stacked and positioned, the support plate can push the stacked sheets up, thereby completing the unloading process;

[0032] 3. By arranging a deviation-correcting block on the side wall of the drum that can move radially along the drum, the deviation-correcting block can further improve the positioning and alignment effect of the laminations. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram showing the overall structure of the positioning device in an embodiment of the present application;

[0034] Figure 2 yes Figure 1 An enlarged schematic diagram at A;

[0035] Figure 3 is a top view schematic diagram showing a positioning device according to an embodiment of the present application;

[0036] Figure 4 is a cross-sectional schematic diagram of an embodiment of the present application at position BB;

[0037] Figure 5 This is a structural schematic diagram showing the lifting principle of the support plate in an embodiment of the present application;

[0038] Figure 6 yes Figure 4 Enlarged schematic at C.

[0039] Explanation of the accompanying drawings: 1. Workbench; 11. Positioning column; 111. Positioning block; 112. Wear-resistant strip; 12. First driving source; 13. Fixed plate; 14. Slide groove; 15. Fourth driving source; 2. Rotating drum; 21. Correction block; 22. Third driving source; 23. Roller; 3. Lamination; 31. Notch; 4. Guide column; 41. First screw rod; 42. Second driving source; 43. Guide block; 5. Support plate; 51. Gravity sensing sensor; 52. Auxiliary support member; 53. Infrared transmitter; 6. Infrared receiver; 7. Second screw rod. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6 This application is described in further detail.

[0041] The present application embodiment discloses a stator lamination positioning device, referring to Figure 1 The stator lamination positioning device comprises a horizontal workbench 1, and a vertically placed rotating drum 2 is provided on the top surface of the workbench 1. The rotating drum 2 is rotatably connected to the workbench 1, and the rotating axis of the rotating drum 2 is vertical. The lamination 3 can be sleeved on the rotating drum 2, and the outer diameter of the rotating drum 2 is slightly smaller than the inner diameter of the lamination 3. When the lamination 3 is sleeved on the rotating drum 2, the rotating drum 2 rotates, and the outer wall of the rotating drum 2 can contact the inner circle of the lamination 3. The friction force generated by the contact between the rotating drum 2 and the lamination 3 enables the lamination 3 to rotate slowly with the rotating drum 2. The rotating drum 2 and the workbench 1 are detachably connected, so that the rotating drum 2 can be adjusted accordingly according to the different inner diameters of different laminations 3 to achieve the best matching effect.

[0042] Reference Figure 2 and Figure 3, the top surface of the workbench 1 can also be detachably connected with a vertical positioning column 11, and the detachable connection between the workbench 1 and the positioning column 11 can be realized by bolt connection. The detachable connection between the workbench 1 and the positioning column 11 makes it convenient to dynamically adjust the positioning column 11 to a position that can be well matched with the stacking 3 when the stacking sheets 3 of different outer diameters are sleeved on the rotating drum 2. The positioning column 11 is detachably connected with a vertical positioning block 111 near the end of the rotating drum 2, and the detachable connection method can also be bolt connection, so that the positioning block 111 is easy to replace. The positioning block 111 is sleeved with a wear-resistant strip 112 near the end of the rotating drum 2, and the wear-resistant strip 112 can be made of wear-resistant rubber or wear-resistant plastic material, and the wear-resistant strip 112 can form a covering for the positioning block 111. The cross-sectional shape of the wear-resistant strip 112 in the horizontal direction matches the shape of the notch 31 on the periphery of the stacking sheet 3, and the wear-resistant strip 112 can be clamped in the notch 31 of the stacking sheet 3 to limit the movement of the stacking sheet 3.

[0043] When it is necessary to position the stack 3, it is only necessary to apply external force to make the drum 2 rotate quickly. At this time, the inner ring of the stack 3 is placed on the drum 2, and the stack 3 falls by its own gravity until it contacts the top of the positioning block 111. At this time, the stack 3 is restricted from falling by the positioning block 111. Since the drum 2 is rotating, the inner ring of the stack 3 contacts and rubs against the outer wall of the drum 2. The friction between the stack 3 and the drum 2 causes the stack 3 to rotate slowly with the drum 2. During the rotation of the stack 3, when the stack 3 rotates to the groove 31 corresponding to the positioning block 111, the positioning block 111 is just stuck in the groove 31 of the stack 3. At this time, the stack 3 is restricted from rotating by the positioning block 111 and falls along the drum 2, completing the alignment of the stack 3. The wear-resistant strip 112 is wrapped around the outside of the positioning block 111, and the laminate 3 directly contacts and rubs against the wear-resistant strip 112. Due to its own material, the wear-resistant strip 112 can effectively reduce the scratches and wear on the laminate 3 and reduce the damage to the surface of the laminate 3. When the wear-resistant strip 112 is severely worn, the wear-resistant strip 112 can be replaced.

[0044] Reference Figure 4 and Figure 5 A first driving source 12 is fixed at the bottom of the workbench 1. The first driving source 12 can be a small servo motor. The output shaft of the first driving source 12 is vertically upward and coaxially fixed with the bottom of the drum 2, so that the first driving source 12 can drive the drum 2 to rotate.

[0045] The top surface of the workbench 1 is slidably connected to two vertical guide columns 4, which are symmetrically distributed along the axis of the rotating drum 2. A vertical first screw rod 41 is rotatably connected inside the two guide columns 4, and the upper and lower ends of the first screw rod 41 are rotatably connected to the guide columns 4. A support plate 5 is passed through and threadedly connected to the first screw rod 41. The support plate 5 is horizontally placed and one end extends toward the rotating drum 2 until the support plate 5 can abut against the laminate 3 sleeved on the rotating drum 2, so that the support plate 5 can provide an upward support force for the laminate 3, and the laminate 3 falls on the two support plates 5 after falling along the rotating drum 2. A second driving source 42 is fixed to the guide column 4 below the first screw rod 41. The second driving source 42 can be a micro stepping motor. The output shaft of the second driving source 42 is vertically upward and coaxially fixed with the bottom of the first screw rod 41. The second driving source 42 can drive the first screw rod 41 to rotate. The output shaft of the second driving source 42 drives the first screw rod 41 to rotate, and the first screw rod 41 drives the support plate 5 threadedly connected thereto to move in the vertical direction. The forward and reverse rotation of the second driving source 42 can control the rise or fall of the support plate 5, and the direction of the second driving source 42 can be changed according to the loading and unloading conditions of the laminate 3.

[0046] Reference Figure 5 and Figure 6 , a gravity sensor 51 is fixed on the top surface of the support plate 5, and the top surface of the gravity sensor 51 is higher than the top surface of the support plate 5. When the stack 3 falls, it will be received by the gravity sensor 51, and the gravity sensor 51 can be connected to an external control unit. When the stack 3 is aligned, it slides along the drum 2 onto the gravity sensor 51. At this time, the gravity sensor 51 is compressed and sends a signal to the external control unit. At this time, the support plate 5 begins to descend at a uniform speed until the weight of the stacked stack 3 reaches the preset pressure value of the gravity sensor 51, and the support plate 5 stops descending. An auxiliary support member 52 is also fixed on the top surface of the support plate 5. The auxiliary support member 52 is arranged around the gravity sensor 51, and the top surface of the auxiliary support member 52 is lower than the top surface of the gravity sensor 51. If the weight of the stack 3 is too heavy or other emergencies occur, the gravity sensor 51 is completely pressed into the auxiliary support member 52. At this time, the auxiliary support member 52 completely provides an upward support force for the stack 3, reducing the damage to the gravity sensor 51.

[0047] Reference Figure 5 and Figure 6, an infrared transmitter 53 is fixed on the side of the support plate 5, and the infrared transmitter 53 can emit infrared rays in the horizontal direction. At the same time, a vertical fixing plate 13 is fixed on the top surface of the workbench 1, and an infrared receiver 6 is fixed on the end of the fixing plate 13 close to the guide column 4, and the infrared transmitter 53 corresponds to the infrared receiver 6. When the infrared receiver 6 and the infrared transmitter 53 are in the same horizontal plane, the infrared receiver 6 can receive the signal sent by the infrared transmitter 53 and send a signal to the external control unit. At this time, the support plate 5 stops moving. If the gravity sensor 51 fails, the infrared transmitter 53 and the infrared receiver 6 cooperate to play a secondary protection role.

[0048] Reference Figure 4 and Figure 5 , two deflection correction blocks 21 are slidably connected to the side wall of the drum 2, and the two deflection correction blocks 21 are symmetrically arranged along the axis of the drum 2. A third driving source 22 is also fixed inside the drum 2, and the third driving source 22 can be a micro servo motor, and the third driving source 22 is arranged between the two deflection correction blocks 21. When all the stacking sheets 3 are positioned, the support plate 5 stops descending, and at this time, the third driving source 22 drives the two deflection correction blocks 21 to move away from each other at the same time, that is, the two deflection correction blocks 21 move outward from the drum 2 at the same time until the deflection correction blocks 21 abut against the inner wall of the stacked stacking sheets 3. Since the inner diameter of the stacking sheets 3 is slightly larger than the outer diameter of the drum 2, there may be radial deviation after the stacking of the stacking sheets 3. At this time, the deflection correction blocks 21 abut against the inner wall of the stacking sheets 3, and push the stacking sheets 3 to move until all the stacking sheets 3 are aligned in the radial direction, further improving the alignment effect of the stacking sheets 3.

[0049] A horizontally placed guide block 43 is fixed on the top of the guide column 4. The guide block 43 extends toward the direction close to the drum 2. At the same time, the height of the guide block 43 in the vertical direction is greater than the height of the positioning block 111. The guide block 43 is rotatably connected to the roller 23 with a horizontal axis at one end close to the drum 2. When the support plate 5 drives the positioned stack 3 to rise, and until the stack 3 is out of the limit of the positioning block 111, the outer wall of the roller 23 is in contact with the stack 3. Since the roller 23 can roll, it can reduce the friction between the stack 3 and improve the passability of the stack 3. At the same time, the stack 3 can always be limited during the entire rising process, and the stack 3 can always be neatly stacked.

[0050] Reference Figure 5The top surface of the workbench 1 is provided with a slide groove 14, the guide column 4 is slidably connected in the slide groove 14, a horizontal second screw rod 7 is also arranged in the slide groove 14, a fourth driving source 15 is fixed at the side wall of the workbench 1 corresponding to the slide groove 14, the bottom of the guide column 4 is threadedly connected with the horizontal second screw rod 7, the workbench 1 is also provided with a fourth driving source 15 for driving the second screw rod 7 to rotate, the fourth driving source 15 can be a small stepping motor, one end of the second screw rod 7 is rotatably connected to the workbench 1, and the other end of the second screw rod 7 is coaxially fixed with the fourth driving source 15. The guide column 4 can move under the cooperation of the fourth driving source 15 and the second screw rod 7, so that the distance between the two guide columns 4 can be dynamically adjusted, so as to adapt to the positioning work of the stacks 3 of different sizes.

[0051] The implementation principle of a stator lamination 3 positioning device in an embodiment of the present application is as follows: the lamination 3 can rotate along with the drum 2, and when rotating, the lamination 3 can cooperate with the positioning block 111 through the notch 31 on the outer periphery, so that the lamination 3 is limited by the positioning block 111, thereby completing the positioning of the lamination 3. When the lamination 3 is stacked to a certain weight or when the support plate 5 is lowered to the point where the infrared transmitter 53 and the infrared receiver 6 are on the same horizontal line, the support plate 5 stops moving, and at this time, the correction block 21 moves to further align the lamination 3, and then the support plate 5 drives the lamination 3 to rise, thereby completing the entire unloading process.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stator lamination positioning device, characterized in that: The workbench (1) comprises a workbench (1), the workbench (1) being placed horizontally, the top surface of the workbench (1) being provided with a rotating drum (2) and a positioning column (11) which are placed vertically and at intervals, the rotating drum (2) being rotatably connected to the workbench (1), the rotating drum (2) being used to sleeve a laminate (3) to drive the laminate (3) to rotate, and the bottom of the workbench (1) being provided with a first driving source (12) for driving the rotating drum (2) to rotate; A positioning block (111) is provided at one end of the positioning column (11) close to the rotating drum (2), and the positioning block (111) is used to cooperate with a notch (31) on the outer periphery of the laminate (3) to position the laminate (3); The top surface of the workbench (1) is also provided with two vertical guide columns (4), the two guide columns (4) are symmetrically distributed along the axis of the rotating drum (2), the two guide columns (4) are both slidably connected to a horizontal support plate (5), the two support plates (5) are symmetrically arranged along the axis of the rotating drum (2), the guide columns (4) are also provided with a driving assembly for driving the support plate (5) to reciprocate in the vertical direction, and the support plate (5) is used to receive the laminated sheets (3); A guide block (43) is provided at the top of the guide column (4), the guide block (43) extends in a direction close to the rotating drum (2), the height of the guide block (43) in the vertical direction is greater than the height of the positioning block (111), and the end of the guide block (43) away from the guide column (4) is used to contact the outer periphery of the lamination (3); The guide block (43) is rotatably connected to a roller (23) at one end close to the rotating drum (2), the rotation axis of the roller (23) is horizontal, and the outer wall of the roller (23) is used to contact the outer periphery of the laminate (3); when the support plate (5) drives the positioned laminate (3) to rise, and until the laminate (3) is free from the limit of the positioning block (111), the outer wall of the roller (23) is in contact with the laminate (3); The guide column (4) is slidably connected to the workbench (1); a horizontal second screw rod (7) is threadedly connected to the bottom of the guide column (4); the workbench (1) is also provided with a fourth driving source (15) for driving the second screw rod (7) to rotate; one end of the second screw rod (7) is rotatably connected to the guide column (4); and the other end of the second screw rod (7) is coaxially fixed to the fourth driving source (15).

2. A stator lamination positioning device according to claim 1, characterized in that: The driving assembly comprises a second driving source (42) and a first screw rod (41), wherein the first screw rod (41) is vertically arranged, penetrates the support plate (5), and is threadedly connected to the support plate (5), one end of the first screw rod (41) is rotatably connected to the guide column (4), and the other end of the first screw rod (41) is coaxially fixed to an output shaft of the second driving source (42).

3. A stator lamination positioning device according to claim 1, characterized in that: The top surface of the support plate (5) is provided with a gravity sensing sensor (51), and the gravity sensing sensor (51) is used to receive the stack (3) and to feed back the weight of the stack (3) to an external control unit.

4. A stator lamination positioning device according to claim 3, characterized in that: An auxiliary support member (52) is provided on the top surface of the support plate (5); the auxiliary support member (52) is arranged around the gravity sensing sensor (51); and the top surface of the auxiliary support member (52) is lower than the top surface of the gravity sensing sensor (51).

5. A stator lamination positioning device according to claim 3, characterized in that: An infrared transmitter (53) is arranged on the side of the support plate (5), and an infrared receiver (6) is arranged on the top surface of the workbench (1). The infrared transmitter (53) and the infrared receiver (6) are located in corresponding positions. When the infrared receiver (6) and the infrared transmitter (53) are located in the same horizontal plane, the infrared receiver (6) can receive the signal emitted by the infrared transmitter (53).

6. A stator lamination positioning device according to claim 1, characterized in that: Two deflection correcting blocks (21) are slidably connected to the side wall of the rotating drum (2); the two deflection correcting blocks (21) are symmetrically arranged along the axis of the rotating drum (2); the two deflection correcting blocks (21) can move radially toward or away from each other along the rotating drum (2); and a third driving source (22) for driving the deflection correcting blocks (21) to move is also arranged between the two deflection correcting blocks (21).

7. A stator lamination positioning device according to claim 1, characterized in that: A wear-resistant strip (112) is sleeved on the side wall of one end of the positioning block (111) close to the rotating drum (2), and the wear-resistant strip (112) is coated on the side wall of the positioning block (111).

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