A motor shaping device and control method thereof

Abstract

The invention discloses a shaping device for a motor and a control method thereof, and relates to the technical field of motor shaping. The shaping effect on the coil is a rolling force along the inner end of the spiral to the outer end of the spiral. On the one hand, the rolling force is "soft" and can be continuously generated, and the coil has good metal deformation adaptability; on the other hand, the inner end of the coil is locked, and the coil is pushed and pressed along the spiral direction of the coil, and the twisting force of the coil will be released from the outer end of the coil that naturally hangs down. At the moment when the pressure is released, the twisting force of the coil will be greatly reduced, thereby effectively releasing the tension accumulated inside the coil when it is hard squeezed, so as to reduce the gradual rebound of the coil after shaping. A further effect is: the inner end of the coil is locked and the outer end hangs down naturally, and the rolling shaping effect that progresses from the inside to the outside can improve the tightness of the coil winding on the winding, and the winding margin generated when progressing outward can also be released from the outer end of the coil that naturally hangs down.

Description

Technical Field

[0001] The present invention relates to the technical field of motor shaping, and in particular to a motor shaping device and a control method thereof. Background Art

[0002] Stator winding refers to the winding installed on the stator, usually composed of multiple coils or coil groups, used to generate electromagnetic circuits. Depending on the shape of the coil winding and the embedded wiring method, the stator is composed of an iron core and a coil embedded in the iron core. After the winding is completed, the coils inside the stator and the coils exposed at the end faces of the iron core are irregular in shape, which will cause interference when installing the rotor or end cover. If the stator coil is asymmetric when the motor is working, it will also cause vibration, uneven speed and other adverse effects on the rotor. Therefore, it is necessary to shape the coil ends after the motor stator coil is wound.

[0003] At present, stator coil shaping in the market mostly relies on automated shaping equipment, which generally adopts a combination of distributed lifting clamp arms and the stator winding positioning mechanism below. After the clamp arms with equal angles fall to the shaping station, they will produce a relatively uniform clamping and shaping effect on the stator coils in all directions through their own tightening. It has the advantages of high degree of automation and relatively uniform shaping degree and effect of each coil, so it is widely favored:

[0004] But in fact, the coil is attached to the stator in the form of winding. It is difficult to ensure that the coil is completely shaped only by the pressure of the clamp arm. The reason is that the copper coil has a certain resilience. Analogous to a spring, if the spring is directly squeezed hard, the twisting force of the spring will be quickly released and the spring will pop out when the pressure is released. Although the resilience of the copper coil is not as good as that of the spring, it also has a certain metal resilience. It is just shaped after squeezing, but in the following period of time, the copper coil will slowly rebound to release the internal tension generated by the hard squeezing;

[0005] The problem is that the copper coil rebounds relatively slowly. If it rebounds quickly like a spring, the problem can be discovered and corrected in time. However, the copper coil does not rebound obviously after the shaping is completed, but rather slowly. It may even gradually appear after the rotor and end cover are installed, resulting in the concealment of the problem. In severe cases, it may even cause vibration of the rotor and uneven speed during subsequent motor operation.

[0006] In view of the above problems, it is urgent to carry out innovative design based on the original motor shaping device and its control method. Summary of the invention

[0007] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide a shaping device for a motor and a control method thereof, so as to solve the problem that the copper coil does not rebound obviously after the shaping is completed, but rather slowly, and may even gradually appear after the rotor and the end cover are installed, resulting in the concealment of the problem. In severe cases, it may even cause the rotor to vibrate and the speed to be uneven during the subsequent operation of the motor.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shaping device for a motor, comprising a shaping workbench, an output mechanism suspended above the shaping area, and a rotating plate connected to the output mechanism, which can automatically identify the position and shape the coil from the inside to the outside in a rolling posture, wherein the shaping work area on the upper surface of the shaping workbench is equipped with an integrated shaping mold that can automatically identify the contact and adaptively press the inner end of the coil before the rolling operation;

[0009] The outer side wall of the rotating plate is provided with an arc-shaped protrusion-shaped mechanism corresponding to the coil and capable of rolling the coil.

[0010] Preferably, the telescopic end of the output mechanism is retractably connected to a telescopic rod, a positioning plate is fixed to the lower end of the telescopic rod, and the upper end of the contact is fixedly connected to the lower surface of the positioning plate.

[0011] Preferably, the rotating plate is hinged to the positioning plate and is distributed at equal angles outside the positioning plate according to the number of coils, a second spring is wound around the outer wall of the telescopic rod, one end of the second spring is welded to the telescopic end of the output mechanism, and the other end of the second spring is fixed to the upper surface of the positioning plate.

[0012] Preferably, one end of an inclined push plate is hinged to the inner side wall of the rotating plate, and the other end of the inclined push plate is hinged to the telescopic end of the output mechanism.

[0013] Preferably, a frustum-shaped protrusion structure for centrally positioning the stator winding and receiving the positioning disk is provided at the center of the integrated shaping mold.

[0014] Preferably, a work position groove which fits with the hemispherical lower end of the contact is provided at the center of the frustum-shaped protrusion structure, and an annular groove which connects with the inner end of the coil is provided on the upper surface of the integrated shaping mold.

[0015] Preferably, the inner end of the coil falls inside the annular groove, and the outer end of the coil naturally hangs down on the outside of the integrated shaping mold.

[0016] Preferably, a pressure rod is slidably arranged inside the integrated shaping mold, and the outer end of the pressure rod is connected with the inner wall of the annular groove, and the inner end of the pressure rod is beveled upward, and the beveled inner end of the pressure rod is connected with the inner wall of the work station groove.

[0017] Preferably, the pressure rod is distributed at equal angles inside the integrated shaping mold according to the number of coils, and a first spring is wound around the outer wall of the pressure rod, one end of the first spring is welded to the outer wall of the integrated shaping mold, and the other end of the first spring is fixed to the outer wall of the pressure rod.

[0018] A shaping control method for a motor comprises the following steps:

[0019] S1. The output mechanism adopts a multi-stage hydraulic telescopic rod, and the multi-stage hydraulic telescopic rod includes two strokes:

[0020] S1-1, first stroke: the multi-stage hydraulic telescopic rod is extended to drive the contact to fall into the station slot of the integrated shaping mold, and the positioning plate is just fitted to the frustum-shaped protrusion structure at the center of the integrated shaping mold;

[0021] S1-2, second stroke: after the first stroke, the multi-stage hydraulic telescopic rod continues to extend downward. At this time, the positioning plate and the contact cannot fall, so the telescopic rod remains relatively still. The lowermost end of the multi-stage hydraulic telescopic rod will fall along the outer wall of the telescopic rod and compress the second spring to finally drive the rotating plate to roll and shape the coil from the inside out;

[0022] S2. After the two strokes are completed in sequence, the multi-stage hydraulic telescopic rod is retracted by setting the intermittent time, and resets from the second stroke to the first stroke, first restores the rolling posture of the rotating plate, and then continues to retract to drive the positioning plate and the contact away from the integrated plastic mold, completing a control cycle.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The multi-stage hydraulic telescopic rod extends downward step by step and drives the positioning plate, contacts, rotating plate and inclined push plate to fall steadily together. The lowest contact will first enter the work station slot at the center of the integrated shaping mold. As the fall progresses, the hemispherical lower end of the contact will gradually and synchronously contact and squeeze the upward inclined surfaces of the inner ends of several pressure rods, so that each pressure rod will synchronously expand outward and compress its corresponding first spring, so that the arc-shaped outer end of the pressure rod gradually inserts into the annular groove and gradually contacts and squeezes the inner end of the coil. Finally, when the contact is completely positioned inside the work station slot, each pressure rod corresponds to the inner end of each coil and presses it tightly in the annular groove, thereby positioning the inner end of the coil, and the outer end of the coil is placed in the integrated shaping mold in a natural hanging posture. At the same time, the positioning plate also fits perfectly on the raised center of the integrated shaping mold and cannot continue to fall. At this time, the contact and the positioning plate automatically recognize the position and lock the inner end of the coil.

[0025] Then enters the next stage, the multi-section hydraulic telescopic rod continues to extend downward, at this time, because the contacts, positioning plate and telescopic rod are in a positioned state and cannot continue to fall, the lower end of the multi-section hydraulic telescopic rod will be sleeved on the outside of the telescopic rod and continue to fall (a matching slide groove is provided inside the lower end of the multi-section hydraulic telescopic rod) and compress the second spring, and because there is a relative outward progressive displacement between the multi-section hydraulic telescopic rod and the positioning plate, and the position of the positioning plate is fixed, the gradually falling lower end of the multi-section hydraulic telescopic rod will generate a downward oblique thrust to the rotating plate in an elevated posture through the oblique thrust plates distributed at equal angles, thereby forcing the rotating plate to perform an adaptive outward rotation around the periphery of the positioning plate.

[0026] The effect achieved is:

[0027] When the rotating plate rotates adaptively outward, the arc-shaped convex structure on its outer arc surface will contact and squeeze the coil from the inside to the outside in turn according to its rotation trajectory. In simple terms, the arc-shaped convex structure will gradually move from the proximal end of the coil to the outer end of the coil in a rolling posture, so that the shaping effect on the coil is a rolling force from the inner end of the spiral to the outer end of the spiral. On the one hand, the rolling force is "soft" and can be continuously generated, unlike the existing clamping method that generates and ends quickly, and has better metal deformation adaptability for copper coils; on the other hand, the inner end of the coil is locked, and it moves from the inside to the outside along the spiral direction. When rolling the coil externally, it is equivalent to pushing and pressing along the spiral direction of the coil. The twisting force of the wound coil will be released from the naturally hanging outer end of the coil. At the moment the pressure is released, the twisting force (rebound effect) of the coil will be greatly reduced, thereby effectively releasing the tension accumulated inside the coil when it is hard squeezed, so as to reduce the gradual rebound of the coil after shaping. A further effect is: the inner end of the coil is locked and the outer end hangs naturally. In addition, the rolling shaping effect that progresses from the inside to the outside can improve the tightness of the coil on the winding, and the winding margin generated when progressing outward can be released from the naturally hanging outer end of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the shaping device for the motor of the present invention.

[0029] Figure 2 It is a three-dimensional diagram of the stator coil after it is in place in the present invention.

[0030] Figure 3 It is a three-dimensional diagram after the contact recognition in the present invention is placed in position.

[0031] Figure 4 It is a schematic diagram of the connection between the stator coil and the integrated shaping mold of the present invention.

[0032] Figure 5 It is a schematic diagram of the connection between the pressure rod and the integrated shaping mold of the present invention.

[0033] Figure 6 It is a schematic diagram of the relative positions of the rotating plate and the output mechanism in the initial state of the present invention.

[0034] Figure 7 It is a schematic diagram of the relative positions of the rotating plate and the output mechanism after the contacts are in place in the present invention.

[0035] Figure 8 It is a three-dimensional diagram of the integrated shaping mold of the present invention.

[0036] Fig. 9 It is the first cross-sectional view of the integrated shaping mold of the present invention.

[0037] Fig.10It is a second cross-sectional view of the integrated shaping mold of the present invention.

[0038] In the figure: 1. shaping workbench; 2. output mechanism; 3. integrated shaping mold; 31. pressure rod; 32. first spring; 4. coil; 5. telescopic rod; 51. second spring; 6. positioning plate; 7. contact; 8. rotating plate; 81. inclined push plate. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 10 The present invention provides a technical solution: a shaping device for a motor, comprising a shaping workbench 1, an output mechanism 2 suspended above the shaping area, and a rotating plate 8 connected to the output mechanism 2, which can automatically identify the position and shape the coil 4 from the inside to the outside in a rolling posture. The shaping work area on the upper surface of the shaping workbench 1 is equipped with an integrated shaping mold 3 that can automatically identify the contact 7 and adaptively press the inner end of the coil 4 before the rolling operation.

[0041] The telescopic end of the output mechanism 2 is retractably connected to a telescopic rod 5 , a positioning plate 6 is fixed to the lower end of the telescopic rod 5 , and the upper end of the contact 7 is fixedly connected to the lower surface of the positioning plate 6 .

[0042] The rotating plate 8 is hinged to the positioning plate 6 and is distributed at equal angles outside the positioning plate 6 according to the number of coils 4. The outer wall of the telescopic rod 5 is wrapped with a second spring 51, and one end of the second spring 51 is welded to the telescopic end of the output mechanism 2, and the other end of the second spring 51 is fixed to the upper surface of the positioning plate 6.

[0043] One end of an inclined push plate 81 is hinged to the inner side wall of the rotating plate 8 , and the other end of the inclined push plate 81 is hinged to the telescopic end of the output mechanism 2 .

[0044] A frustum-shaped protrusion structure for centrally positioning the stator winding and receiving the positioning plate 6 is provided at the center of the integrated shaping mold 3 .

[0045] A work position groove which matches with the hemispherical lower end of the contact 7 is provided at the center of the frustum-shaped protrusion structure, and an annular groove which connects with the inner end of the coil 4 is provided on the upper surface of the integrated shaping mold 3 .

[0046] The inner end of the coil 4 falls inside the annular groove, and the outer end of the coil 4 naturally hangs down on the outer side of the integrated shaping mold 3 .

[0047] A pressure rod 31 is slidably arranged inside the integrated shaping mold 3, and the outer end of the pressure rod 31 is connected to the inner wall of the annular groove, and the inner end of the pressure rod 31 is beveled upward, and the beveled inner end of the pressure rod 31 is connected to the inner wall of the station groove.

[0048] The pressure rod 31 is distributed at equal angles inside the integrated shaping mold 3 according to the number of coils 4, and the outer wall of the pressure rod 31 is wrapped with a first spring 32, one end of the first spring 32 is welded to the outer wall of the integrated shaping mold 3, and the other end of the first spring 32 is fixed to the outer wall of the pressure rod 31.

[0049] A shaping control method for a motor comprises the following steps:

[0050] S1, output mechanism 2 adopts a multi-stage hydraulic telescopic rod, and the multi-stage hydraulic telescopic rod includes two strokes:

[0051] S1-1, first stroke: the contact 7 is driven to fall into the station slot of the integrated shaping mold 3 by extending the multi-stage hydraulic telescopic rod, and the positioning plate 6 is just fitted to the frustum-shaped protrusion structure at the center of the integrated shaping mold 3;

[0052] S1-2, second stroke: after the first stroke, the multi-stage hydraulic telescopic rod continues to extend downward, at which time the positioning plate 6 and the contact 7 cannot fall, so the telescopic rod 5 remains relatively still, and the lowermost end of the multi-stage hydraulic telescopic rod falls along the outer wall of the telescopic rod 5 and compresses the second spring 51, and finally drives the rotating plate 8 to roll the coil 4 from the inside out;

[0053] S2. After the two strokes are completed in sequence, the multi-stage hydraulic telescopic rod is retracted by setting the intermittent time, and reset starts from the second stroke to the first stroke, first restoring the rolling posture of the rotating plate 8, and then continuing to retract to drive the positioning plate 6 and the contact 7 away from the integrated shaping mold 3, completing a control cycle.

[0054] First, if Figure 1 As shown in the figure, the stator and the stator windings distributed on the periphery are placed in the center of the frustum-shaped protrusion of the integrated shaping mold 3. Under the promotion of the smooth inclined side wall of the frustum, the stator and the stator windings distributed on the periphery will be as shown in the figure. Figure 2 As shown, it automatically falls into the shaping station, and then the inner ends of the stator outer coils 4 need to be manually placed one by one into the annular groove on the upper surface of the integrated shaping mold 3 and kept vertically downward as much as possible to correspond to the end of the pressure rod 31 leaking out of the annular groove.

[0055] Then the output mechanism 2 starts to drive the multi-stage hydraulic telescopic rod to extend downward step by step and drive the positioning plate 6, the contact 7, the rotating plate 8 and the inclined push plate 81 to fall steadily together. The lowest contact 7 will first enter the station slot at the center of the integrated plastic mold 3. As the fall proceeds, the hemispherical lower end of the contact 7 will gradually and synchronously contact and squeeze the upward inclined surfaces of the inner ends of the plurality of pressure rods 31, so that each pressure rod 31 will synchronously expand outward and compress the corresponding first spring 32, so that the arc-shaped outer end of the pressure rod 31 is gradually inserted into the annular groove. The inner end of the coil 4 is gradually contacted and squeezed. Finally, when the contact 7 is completely positioned inside the work station slot, each pressure rod 31 corresponds to the inner end of each coil 4 and presses it into the annular groove, thereby positioning the inner end of the coil 4, and the outer end of the coil 4 is placed on the outside of the integrated shaping mold 3 in a naturally hanging posture. At the same time, the positioning plate 6 also fits perfectly on the raised center of the integrated shaping mold 3 and cannot continue to fall. At this time, the contact 7 and the positioning plate 6 automatically recognize the position and lock the inner end of the coil 4.

[0056] Then enters the next stage, the multi-stage hydraulic telescopic rod continues to extend downward. At this time, since the contacts 7, the positioning plate 6 and the telescopic rod 5 are in the positioned state and cannot continue to fall, the lower end of the multi-stage hydraulic telescopic rod will be sleeved on the outside of the telescopic rod 5 and continue to fall (a matching slide groove is provided inside the lower end of the multi-stage hydraulic telescopic rod) and compress the second spring 51. Since there is a relative outward progressive displacement between the multi-stage hydraulic telescopic rod and the positioning plate 6, and the position of the positioning plate 6 is fixed, the gradually falling lower end of the multi-stage hydraulic telescopic rod will generate a downward oblique thrust on the rotating plate 8 in an elevated posture through the oblique thrust plates 81 distributed at equal angles, thereby forcing the rotating plate 8 to perform an adaptive outward rotation around the positioning plate 6.

[0057] When the rotating plate 8 rotates adaptively outward, the arc-shaped convex structure on its outer arc surface will contact and squeeze the coil 4 in turn from the inside to the outside according to its rotation trajectory. In simple terms, the arc-shaped convex structure will gradually move from the proximal end of the coil 4 to the outer end of the coil 4 in a rolling posture, so that the shaping effect on the coil 4 is a rolling force from the inner end of the spiral to the outer end of the spiral. On the one hand, the rolling force is "soft" and can be continuously generated, unlike the existing clamping method that is quickly generated and ended, and has better metal deformation adaptability for the copper coil 4; on the other hand, the inner end of the coil 4 is locked, and the coil 4 moves from the inside to the outside along the spiral direction. When rolling the coil 4, it is equivalent to pushing and pressing along the spiral direction of the coil 4. The twisting force of the wound coil 4 will be released from the outer end of the coil 4 that naturally hangs down. At the moment when the pressure is released, the twisting force (rebound effect) of the coil 4 will be greatly reduced, thereby effectively releasing the tension accumulated inside the coil 4 when it is hard squeezed, so as to reduce the gradual rebound of the coil 4 after shaping. A further effect is: the inside of the coil 4 is locked and the outer end hangs down naturally. In addition, the rolling shaping effect that progresses from the inside to the outside can improve the tightness of the coil 4 on the winding, and the winding margin generated when progressing outward can be released from the outer end of the coil 4 that naturally hangs down.

[0058] Finally, after the two strokes are completed in sequence, the multi-stage hydraulic telescopic rod is retracted by setting the intermittent time, and reset starts from the second stroke to the first stroke, first restoring the rolling posture of the turn plate 8, and then continuing to retract to drive the positioning plate 6 and the contact 7 away from the integrated shaping mold 3, completing a shaping cycle.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shaping device for a motor, characterized in that: It comprises a shaping workbench (1), an output mechanism (2) suspended above a shaping area, and a rotating plate (8) connected to the output mechanism (2) and capable of automatically identifying a position and shaping a coil (4) from the inside out in a rolling posture, wherein the shaping area on the upper surface of the shaping workbench (1) is provided with an integrated shaping mold (3) capable of automatically identifying a contact (7) and adaptively pressing the inner end of the coil (4) before the rolling operation, the telescopic end of the output mechanism (2) is inwardly connected to a telescopic rod (5), and a positioning plate (6) is fixed to the lower end of the telescopic rod (5); The outer side wall of the rotating plate (8) is provided with an arc-shaped protruding mechanism corresponding to the coil (4) and capable of rolling the coil (4); A frustum-shaped protrusion structure for centrally positioning the stator winding and receiving the positioning plate (6) is provided at the center of the integrated shaping mold (3); a work position groove that fits with the hemispherical lower end of the contact (7) is provided at the center of the frustum-shaped protrusion structure; and an annular groove that connects with the inner end of the coil (4) is provided on the upper surface of the integrated shaping mold (3); A pressure rod (31) is slidably disposed inside the integrated shaping mold (3), and the outer end of the pressure rod (31) is exactly connected to the inner side wall of the annular groove, and the inner end of the pressure rod (31) is arranged to be beveled upward, and the beveled inner end of the pressure rod (31) is exactly connected to the inner side wall of the station groove; The pressure rods (31) are distributed at equal angles inside the integrated shaping die (3) according to the number of coils (4), and a first spring (32) is wound around the outer wall of the pressure rod (31).

2. A motor shaping device according to claim 1, characterized in that: The upper end of the contact (7) is fixedly connected to the lower surface of the positioning plate (6); The rotating plate (8) is hinged to the positioning plate (6), and the rotating plates (8) are distributed outside the positioning plate (6) at equal angles according to the number of coils (4).

3. A motor shaping device according to claim 2, characterized in that: A second spring (51) is wound around the outer wall of the telescopic rod (5), one end of the second spring (51) is welded to the telescopic end of the output mechanism (2), and the other end of the second spring (51) is fixed to the upper surface of the positioning plate (6).

4. A motor shaping device according to claim 2, characterized in that: One end of an inclined push plate (81) is hingedly connected to the inner side wall of the rotating plate (8), and the other end of the inclined push plate (81) is hingedly connected to the telescopic end of the output mechanism (2).

5. The motor shaping device according to claim 1, characterized in that: The inner end of the coil (4) falls inside the annular groove, and the outer end of the coil (4) naturally hangs down on the outside of the integrated shaping mold (3).

6. A motor shaping device according to claim 1, characterized in that: One end of the first spring (32) is welded to the outer wall of the integrated shaping mold (3), and the other end of the first spring (32) is fixed to the outer wall of the pressure rod (31).

7. A control method for a motor shaping device, applicable to a motor shaping device according to any one of claims 1 and 3, characterized in that: The following steps are involved: S1. The output mechanism (2) adopts a multi-stage hydraulic telescopic rod, and the multi-stage hydraulic telescopic rod includes two strokes: S1-1, first stroke: the multi-stage hydraulic telescopic rod is extended to drive the contact (7) to fall into the station slot of the integrated shaping mold (3), and the positioning plate (6) is exactly fitted to the cone-shaped protrusion structure at the center of the integrated shaping mold (3); S1-2, second stroke: after the first stroke is completed, the multi-stage hydraulic telescopic rod continues to extend downward, and at this time the positioning plate (6) and the contact (7) cannot fall, so the telescopic rod (5) remains relatively still, and the lowermost end of the multi-stage hydraulic telescopic rod falls along the outer wall of the telescopic rod (5) and compresses the second spring (51), and finally drives the rotating plate (8) to roll the coil (4) from the inside out; S2. After the two strokes are completed in sequence, the multi-stage hydraulic telescopic rod is retracted by setting an interval time, and reset starts from the second stroke to the first stroke, first restoring the rolling posture of the rotating plate (8), and then continuing to retract to drive the positioning plate (6) and the contact (7) away from the integrated shaping mold (3), completing a control cycle.

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