JP2021083182A - Insertion device and rotor manufacturing device - Google Patents

Abstract

To provide an insertion device and rotor manufacturing device that can automate an insertion operation of a magnet into a rotor core.SOLUTION: An insertion device 200 for inserting a magnet MG into a rotor core 10 includes a magnet holding unit 210, which can rotate around a rotation axis O extending along a horizontal plane, accommodates a magnet MG supplied from a magnet supply device 100 and is provided with a first accommodation groove 205 extending in the radial direction of the rotation axis O, and a magnet insertion unit 220 that pushes out the magnet MG contained in a first accommodation groove 205 and inserts the magnet MG into the rotor core 10. The magnet holding unit 210 switches between a first rotational position R1, in which the magnet MG supplied from the magnet supply device 100 is accommodated in the first accommodation groove 205, and a second rotational position, in which the magnet insertion unit 220 pushes the magnet MG out of the first accommodation groove 205, by rotating around the rotation axis O.SELECTED DRAWING: Figure 8

Description

The present invention relates to an insertion device and a rotor manufacturing device.

Patent Document 1 below discloses a technique for manufacturing a rotor by inserting a magnet having a predetermined length into a rotor core. A magnet having a length corresponding to the type of the rotor core is inserted into the rotor core.

Japanese Patent No. 6240365

By the way, when the magnet is manually inserted into the rotor core by an operator, the manufacturing efficiency is poor, which has been a factor in increasing the cost of the rotor. Therefore, it has been desired to provide a new insertion device that automates the process of inserting the magnet supplied from the magnet supply device into the rotor core.

In view of the above circumstances, one of the objects of the present invention is to provide an insertion device and a rotor manufacturing device capable of automating the insertion work of a magnet into a rotor core.

One aspect of the insertion device of the present invention is an insertion device that inserts a magnet into a rotor core, which is rotatable around a rotation axis extending along a horizontal plane and houses the magnet supplied by the magnet supply device. A magnet holding portion provided with a first accommodating groove extending in the radial direction of the rotating shaft, and a magnet inserting portion for extruding the magnet accommodated in the first accommodating groove and inserting the magnet into the rotor core. The magnet holding portion is provided with a first rotation position for accommodating the magnet supplied from the magnet supply device in the first accommodating groove by rotating around the rotation axis, and the magnet insertion portion is the first. It is characterized in that the second rotation position for pushing out the magnet from the accommodating groove is switched.

One aspect of the rotor manufacturing apparatus of the present invention is characterized by comprising the above-mentioned insertion device and a magnet supply device for supplying the magnet to the insertion device.

According to one aspect of the present invention, there is provided an insertion device and a rotor manufacturing device capable of automating the insertion operation of a magnet into a rotor core.

FIG. 1 is a diagram showing a schematic configuration of a rotor manufacturing apparatus. FIG. 2 is a diagram showing a schematic configuration of a magnet supply device. FIG. 3 is a diagram illustrating the operation of the magnet supply device. FIG. 4 is an exploded view showing a schematic configuration of the rotor core identification device. FIG. 5 is a perspective view showing the basic configuration of the rotor core. FIG. 6A is a plan view showing a schematic configuration of the first laminated steel sheet. FIG. 6B is a plan view showing a schematic configuration of the second laminated steel sheet. FIG. 7A is a diagram conceptually showing an identification method of the rotor core identification device. FIG. 7B is a diagram conceptually showing an identification method of the rotor core identification device. FIG. 8 is a plan view of the insertion device as viewed from the + X side. FIG. 9 is a plan view of the insertion device as viewed from the + Y side. FIG. 10A is a diagram showing a state in which the magnet holding portion is rotated 90 degrees counterclockwise from the first rotation position. FIG. 10B is a diagram showing a state in which the magnet holding portion is rotated 90 degrees clockwise from the second rotation position and returned to the first rotation position. FIG. 11 is a diagram showing a cross-sectional structure taken along the line AA of FIG. FIG. 12 is a diagram showing the operation of the guide mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of the present invention.

Hereinafter, the XYZ coordinate system may be used in the drawings used in the description. In the XYZ coordinate system, the Z-axis direction is a direction parallel to the vertical direction (vertical direction). The X-axis direction is a direction orthogonal to the Z-axis direction. The Y-axis direction is a direction orthogonal to both the Z-axis direction and the X-axis direction. In the present embodiment, the Y-axis direction corresponds to the "first direction", the X-axis direction corresponds to the "second direction", and the XY plane corresponds to the "plane along the horizontal plane".

FIG. 1 is a diagram showing a schematic configuration of a rotor manufacturing apparatus.
As shown in FIG. 1, the rotor manufacturing apparatus 1000 includes a magnet supply apparatus 100, an insertion apparatus 200, a rotor core identification apparatus 300, and a molding apparatus 400.

The magnet supply device 100 is a device that supplies a magnet to the insertion device 200. The insertion device 200 is a device for inserting a magnet into the rotor core. The rotor core identification device 300 is a device that identifies the state of the rotor core before the magnet is inserted. The molding device 400 is a device that performs a molding process of injecting resin into the gap between the rotor core and the magnet.

The rotor manufacturing apparatus 1000 is capable of manufacturing a plurality of types of rotors. The rotor manufacturing apparatus 1000 of the present embodiment corresponds to, for example, the manufacture of three types of rotors. Specifically, the rotor manufacturing apparatus 1000 corresponds to the manufacturing of the first rotor, the second rotor, and the third rotor. The first rotor, the second rotor, and the third rotor each have a rotor core having different heights and a magnet having a length corresponding to the height of each rotor core. The first rotor is the tallest rotor, the third rotor is the lowest height rotor, and the second rotor is a rotor having a height between the first rotor and the third rotor.

The magnet supply device 100 of the present embodiment includes a first supply device 100A and a second supply device 100B. The first supply device 100A and the second supply device 100B are arranged side by side along the X-axis direction. The first supply device 100A and the second supply device 100B have the same configuration. Hereinafter, when the first supply device 100A and the second supply device 100B are not particularly distinguished, they are simply referred to as a magnet supply device 100. The configuration of the magnet supply device 100 will be described later.

The insertion device 200 of the present embodiment includes a first insertion device 200A, a second insertion device 200B, a third insertion device 200C, and a fourth insertion device 200D. The first insertion device 200A, the second insertion device 200B, the third insertion device 200C, and the fourth insertion device 200D are arranged side by side along the X-axis direction.

A magnet is supplied to the first insertion device 200A and the second insertion device 200B from the first supply device 100A. A magnet is supplied to the third insertion device 200C and the fourth insertion device 200D from the second supply device 100B.

The first insertion device 200A, the second insertion device 200B, the third insertion device 200C, and the fourth insertion device 200D have the same configuration. Hereinafter, when the first insertion device 200A, the second insertion device 200B, the third insertion device 200C, and the fourth insertion device 200D are not particularly distinguished, they are simply referred to as the insertion device 200. The configuration of the insertion device 200 will be described later.

The rotor core identification device 300 of the present embodiment includes a first identification device 300A, a second identification device 300B, a third identification device 300C, and a fourth identification device 300D. The first identification device 300A, the second identification device 300B, the third identification device 300C, and the fourth identification device 300D are arranged side by side along the X-axis direction.

The first identification device 300A identifies information about the rotor core into which the first insertion device 200A inserts the magnet. The second identification device 300B identifies information about the rotor core into which the second insertion device 200B inserts the magnet. The third identification device 300C identifies information about the rotor core into which the third insertion device 200C inserts the magnet. The fourth identification device 300D identifies information about the rotor core into which the fourth insertion device 200D inserts the magnet.

The first identification device 300A, the second identification device 300B, the third identification device 300C, and the fourth identification device 300D have the same configuration. Hereinafter, when the first identification device 300A, the second identification device 300B, the third identification device 300C, and the fourth identification device 300D are not particularly distinguished, they are simply referred to as the rotor core identification device 300. The configuration of the rotor core identification device 300 will be described later.

(Magnet supply device)
Subsequently, the configuration of the magnet supply device 100 will be described.
FIG. 2 is a diagram showing a schematic configuration of the magnet supply device 100. FIG. 3 is a diagram illustrating the operation of the magnet supply device 100.
As shown in FIG. 2, the magnet supply device 100 includes a transport unit 110, a separation unit 120, and a supply unit 130.

The transport unit 110 includes a housing unit 110a for accommodating a plurality of magnets M, which are rotor manufacturing parts, and a transport rail 110b for sequentially feeding out the magnets M from the housing unit 110a. The magnet M corresponding to the type of rotor manufactured by the rotor manufacturing apparatus 1000 is housed in the accommodating portion 110a.

The transport rail 110b extends from the accommodating portion 110a in the Y-axis direction, aligns a plurality of magnets M sequentially supplied from the accommodating portion 110a, and conveys them in the Y-axis direction (first direction). On the transport rail 110b, a magnet array ML in which a plurality of magnets M are arranged in a row is generated.

The separation unit 120 separates the magnet (first magnet) M1 located at the tip ML1 of the magnet array ML from the magnet array ML conveyed from the transfer unit 110.

The supply unit 130 supplies the magnet M1 separated by the separation unit 120 to the insertion device 200 described later.

The separation unit 120 is arranged on one side (+ Y side) of the transport rail 110b of the transport unit 110 in the Y-axis direction. The separation unit 120 includes a stage unit 121, a plurality of pins 122, a pin elevating mechanism 123, and a discrimination unit 124.

The stage portion 121 is a support base that extends in the X-axis direction (second direction) intersecting the transport direction (Y-axis direction) of the magnet M and supports the magnet M1. The stage portion 121 is movable in the X-axis direction by, for example, a drive unit (not shown) composed of an actuator or the like.

The stage portion 121 supports the magnet M1 conveyed by the conveying portion 110. The stage portion 121 includes a first support portion 127a and a second support portion 127b. The first support portion 127a and the second support portion 127b are provided side by side in the X-axis direction in the stage portion 121. The first support portion 127a is provided on the + X side of the stage portion 121, and the second support portion 127b is provided on the −X side of the stage portion 121.

In this embodiment, the plurality of pins 122 include a first pin 122a, a second pin 122b, and a third pin 122c. The first pin 122a, the second pin 122b, and the third pin 122c are arranged side by side in the Y-axis direction.

The first pin 122a is provided at the position closest to the transport rail 110b in the Y-axis direction, the second pin 122b is arranged on the + Y side of the first pin 122a, and the third pin 122c is further + Y than the second pin 122b. Placed on the side.

The first pin 122a, the second pin 122b, and the third pin 122c are each inserted into a through hole 125 provided in the stage portion 121 so as to extend in a slit shape along the X direction. The first pin 122a, the second pin 122b, and the third pin 122c can be independently moved up and down by the pin raising and lowering mechanism 123.

The pin elevating mechanism 123 switches the type of pin to be elevated according to the length of the magnet M1 supplied from the transport unit 110 to the stage unit 121.

When the stage portion 121 receives the magnet M1 from the transport portion 110, the stage portion 121 moves so that the first support portion 127a or the second support portion 127b is aligned with the transport rail 110b in a straight line. Note that FIG. 2 shows a state in which the stage portion 121 is moved so that the first support portion 127a is located on the transport rail 110b.

In the separation unit 120, the tip of the magnet M1 delivered from the transport unit 110 to the stage unit 121 in the Y-axis direction comes into contact with a predetermined pin among the plurality of pins 122.

The first pin 122a is used when the first rotor is manufactured in the rotor manufacturing apparatus 1000, that is, when the magnet M1 for the first rotor is conveyed to the separation unit 120. Specifically, the pin elevating mechanism 123 raises only the first pin 122a and makes the second pin 122b and the third pin 122c stand by downward.

Further, the second pin 122b is used when the second rotor is manufactured in the rotor manufacturing apparatus 1000, that is, when the magnet M1 for the second rotor is conveyed to the separation unit 120. Specifically, the pin elevating mechanism 123 raises only the second pin 122b and makes the first pin 122a and the third pin 122c stand by downward.

Further, the third pin 122c is used when the third rotor is manufactured in the rotor manufacturing apparatus 1000, that is, when the magnet M1 for the third rotor is conveyed to the separation unit 120. Specifically, the pin elevating mechanism 123 raises only the third pin 122c and makes the first pin 122a and the second pin 122b stand by downward.

FIG. 2 is a diagram showing a case where the magnet M1 for the first rotor is conveyed to the separation unit 120. The separation unit 120 shown in FIG. 2 stops the movement of the magnet M1 trying to move to the + Y side by bringing the first pin 122a into contact with the magnet M1 transported from the transport unit 110 onto the stage portion 121. In this way, the separation unit 120 supports the magnet M1 received from the transport unit 110 on the stage unit 121.

The determination unit 124 determines the length of the magnet M supported by the stage unit 121. The discrimination unit 124 has a front end detection unit 124a and a rear end detection unit 124b. Hereinafter, a specific configuration of the discriminating unit 124 will be described.

The tip detection unit 124a detects the tip M1a of the magnet M1 supplied from the transport unit 110 to the stage unit 121. In the present embodiment, the tip detection unit 124a includes a plurality of detectors 128 provided side by side in the Y-axis direction. The plurality of detectors 128 include a first detector 128a, a second detector 128b and a third detector 128c. For the first detector 128a, the second detector 128b, and the third detector 128c, for example, a reflective photo sensor is used.

The first detector 128a is a sensor corresponding to the first pin 122a, and detects the tip M1a of the magnet M1 in contact with the first pin 122a. That is, the first detector 128a detects a state in which the tip M1a of the magnet M1 is in contact with the first pin 122a. The magnet M1 for the first rotor has a length such that when the tip M1a comes into contact with the first pin 122a, the rear end M1b is substantially flush with the end surface 121a on the other side (−Y side) of the stage portion 121 in the Y-axis direction. Has.

The second detector 128b is a sensor corresponding to the second pin 122b, and detects the tip M1a of the magnet M1 in contact with the second pin 122b. That is, the second detector 128b detects a state in which the tip M1a of the magnet M1 is in contact with the second pin 122b. The magnet M1 for the second rotor has a length such that when the tip M1a comes into contact with the second pin 122b, the rear end M1b is substantially flush with the end surface 121a on the other side (−Y side) of the stage portion 121 in the Y-axis direction. Has.

The third detector 128c is a sensor corresponding to the third pin 122c, and detects the tip M1a of the magnet M1 in contact with the third pin 122c. That is, the third detector 128c detects a state in which the tip M1a of the magnet M1 is in contact with the third pin 122c. The magnet M1 for the third rotor has a length such that when the tip M1a comes into contact with the third pin 122c, the rear end M1b is substantially flush with the end surface 121a on the other side (−Y side) of the stage portion 121 in the Y-axis direction. Has.

The rear end detection unit 124b is arranged above the end surface 121a on the other side (−Y side) of the stage unit 121 in the Y-axis direction.

When the magnet M1 conveyed from the conveying unit 110 and in contact with the first pin 122a is a magnet for the first rotor, when the first detector 128a detects the contact of the magnet M1 with the first pin 122a, the rear end The detection unit 124b detects the rear end M1b of the magnet M1.

On the other hand, when the magnet M1 in contact with the first pin 122a is not a magnet for the first rotor, the rear end M1b of the magnet M1 is at a position different from the end surface 121a of the stage portion 121. Therefore, the rear end detection unit 124b cannot detect the rear end M1b of the magnet M1.

Therefore, when the tip detection unit 124a detects the tip M1a of the magnet M1 and the rear end detection unit 124b detects the rear end M1b of the magnet M1, the magnet M1 conveyed from the transfer unit 110 has a desired length. It means that it is.

As described above, the discrimination unit 124 can determine whether or not the magnet M1 conveyed from the transfer unit 110 is a magnet having a desired length, based on the detection results of the front end detection unit 124a and the rear end detection unit 124b.

That is, in the discriminating unit 124, for example, when the rotor manufacturing apparatus 1000 manufactures the first rotor, the magnet M supplied from the transport unit 110 to the stage unit 121 has the length of the magnet for the first rotor. It can be determined whether or not it is present.

Based on the discrimination result of the discrimination unit 124, the separation unit 120 of the present embodiment moves the stage unit 121 to the magnet supply position with respect to the insertion device 200 described later by the supply unit 130 by moving in the X-axis direction.

The pin 122 in contact with the magnet M1 is inserted into a through hole 125 provided in the stage portion 121 so as to extend in a slit shape in the X-axis direction. Therefore, the separation unit 120 can move the stage unit 121 in the X-axis direction while keeping the pin 122 raised by the pin elevating mechanism 123 and the magnet M1 in contact with each other. Therefore, when moving the stage portion 121, it is not necessary to move the pin 122 downward by the pin elevating mechanism 123.
The separation unit 120 of the present embodiment can start the movement of the stage unit 121 without waiting for the end of the lowering operation of the pin 122 by the pin elevating mechanism 123. Therefore, the magnet M can be supplied to the insertion device 200, which will be described later, in a shorter time. Further, since the stage portion 121 moves in a state where the pin 122 is in contact with the tip M1a of the magnet M1, it is possible to prevent the magnet M1 from being displaced when the stage portion 121 is moved.

The supply unit 130 includes a first supply unit 130a and a second supply unit 130b. The first supply unit 130a and the second supply unit 130b are arranged so as to sandwich the transfer rail 110b of the transfer unit 110 in the X-axis direction. That is, the first supply unit 130a is arranged on the + X side of the transfer rail 110b, and the second supply unit 130b is arranged on the −X side of the transfer rail 110b.

The first supply unit 130a and the second supply unit 130b have the same configuration. The first supply unit 130a and the second supply unit 130b have a slide unit 131 that can slide in the Y-axis direction. The slide portion 131 can move forward and backward with respect to the stage portion 121.

In the magnet supply device 100 of the present embodiment, when the magnet M1 having a predetermined length is supported by the first support portion 127a, the stage portion 121 is moved in the + X direction as shown in FIG. As a result, the first supply unit 130a and the first support unit 127a of the supply unit 130 are aligned linearly in the Y-axis direction (magnet supply position). The first supply unit 130a moves the magnet M1 supported by the first support unit 127a of the stage unit 121 to the insertion device 200 (second insertion device 200B) side and supplies the magnet M1.

In the magnet supply device 100 of the present embodiment, in the stage portion 121, the first support portion 127a and the first supply portion 130a are aligned linearly in the Y-axis direction, and the second support portion 127b and the transport portion 110 are arranged. The transport rails 110b are aligned linearly in the Y-axis direction.

In the magnet supply device 100 of the present embodiment, the magnet M1 supported by the first support unit 127a is supplied from the transport unit 110 to the second support unit 127b at the timing when the magnet M1 supported by the first support unit 127a is supplied to the insertion device 200 by the first supply unit 130a. And supplies the magnet M1.

The magnet supply device 100 moves the stage portion 121 in the −X direction when the desired magnet M1 is conveyed to the second support portion 127b. As a result, the second supply unit 130b and the second support unit 127b of the supply unit 130 are aligned linearly in the Y-axis direction. The second supply unit 130b supplies the magnet M1 supported by the second support unit 127b of the stage unit 121 to the insertion device 200 (first insertion device 200A).

The stage portion 121 conveys the second support portion 127b and the second supply portion 130b together with the first support portion 127a as shown by the alternate long and short dash line in FIG. 3 in a state where the second support portion 127b and the second supply portion 130b are linearly arranged in the Y-axis direction. The rails 110b are aligned linearly in the Y-axis direction. Therefore, the magnet supply device 100 can supply the magnet M1 to the first support portion 127a by the transport unit 110 at the timing of supplying the magnet M1 supported by the second support portion 127b to the insertion device 200. it can.

As described above, according to the magnet supply device 100 of the present embodiment, the transport unit 110 reciprocates along the X-axis direction with respect to the first support portion 127a and the second support portion 127b of the stage portion 121. M1 can be supplied alternately. Further, the supply unit 130 alternately alternates the magnets M1 supplied to the first support portion 127a and the second support portion 127b of the stage portion 121 reciprocating along the X-axis direction with the first insertion device 200A and the second insertion device 200B. Can be supplied to.

As described above, the rotor manufacturing apparatus 1000 of the present embodiment corresponds to the manufacturing of three types of rotors. Therefore, there is a possibility that magnets corresponding to different rotors may be mixed in the accommodating portion 110a of the conveying portion 110 of the magnet supply device 100. Then, magnets M having different lengths may be mixed in the magnet array ML transported from the transport unit 110.

According to the magnet supply device 100 of the present embodiment, it is determined whether or not the magnet M1 conveyed from the conveying unit 110 has a desired length, and when it is determined that the magnet M1 has a desired length, the magnet array ML is determined. The magnet M1 can be separated from the magnet M1 and supplied to the insertion device 200. On the other hand, the magnet supply device 100 can prevent the insertion device 200 from supplying the magnet M1 when it is determined that the magnet M1 does not have a desired length.

Therefore, according to the magnet supply device 100 of the present embodiment, the desired magnet M1 can be stably supplied to the insertion device 200. Further, according to the magnet supply device 100, it is possible to prevent magnets having different lengths from being inserted into the rotor core. Therefore, according to the rotor manufacturing apparatus 1000 of the present embodiment having the magnet supplying apparatus 100, it is possible to prevent the occurrence of rotor manufacturing defects due to the insertion of magnets having different lengths into the rotor core.

In the rotor manufacturing apparatus 1000 of the present embodiment, the insertion apparatus 200 inserts a magnet into the rotor core 10 supported by the support base 310. The support base 310 is a part of the constituent members of the rotor core identification device 300, which will be described later. The rotor core may be supplied to the support base 310 by, for example, an operator or a robot.

As described above, since the rotor manufacturing apparatus 1000 supports manufacturing of three types of rotors, there is a possibility that rotor cores corresponding to different rotors may be installed on the support base 310. In this case, since the length of the magnet inserted by the insertion device 200 does not correspond to the length of the rotor core, there is a possibility that a defective rotor in which magnets having different lengths are inserted into the rotor core may be manufactured.

Generally, the laminated steel plate constituting the rotor core is made of a press, so that burrs are generated by the press working. Therefore, when inserting a magnet into the rotor core, it is conceivable to set the direction in which the magnet is not easily affected by burrs in the magnet insertion direction. For example, when the rotor core is installed on the support base 310 with the posture of the rotor core inverted upside down in the magnet insertion direction, the magnet may not be inserted into the rotor core well.

On the other hand, the rotor manufacturing apparatus 1000 of the present embodiment identifies information about the rotor core 10 supported by the support base 310 in advance, and the rotor core 10 installed on the support base 310 is an appropriate component that satisfies the desired conditions. In some cases, the insertion device 200 inserts the magnet.

The rotor core identification device 300 of the present embodiment identifies, for example, the posture of the rotor core 10 and the model of the rotor core 10 as information regarding the rotor core 10.
Here, identifying the posture of the rotor core 10 means determining the front and back sides of the rotor core 10 installed on the support base 310. Further, identifying the model of the rotor core 10 is to determine which of the first rotor, the second rotor, and the third rotor is the rotor core.

(Identification device for rotor core)
Subsequently, the configuration of the rotor core identification device 300 will be described.
FIG. 4 is an exploded view showing a schematic configuration of the rotor core identification device 300.
As shown in FIG. 4, the rotor core identification device 300 includes a support base 310, a plurality of photodetectors 320, and an identification unit 330.

In the rotor core identification device 300 of the present embodiment, the plurality of photodetectors 320 include a first photodetector 320A, a second photodetector 320B, a third photodetector 320C, and a fourth light. It has a detection unit 320D. The first photodetector 320A, the second photodetector 320B, the third photodetector 320C, and the fourth photodetector 320D are arranged at different positions with respect to the support 310. Specifically, the first photodetector 320A, the second photodetector 320B, the third photodetector 320C, and the fourth photodetector 320D are arranged at different heights with respect to the support 310.

The first photodetector 320A and the third photodetector 320C are arranged on the −Y side with respect to the support pin 311 provided on the support base 310, which will be described later. The first photodetector 320A is arranged above the third photodetector 320C.

The second photodetector 320B and the fourth photodetector 320D are arranged on the + Y side with respect to the support pin 311 of the support base 310. The second photodetector 320B is arranged above the fourth photodetector 320D.

The first photodetector 320A, the second photodetector 320B, the third photodetector 320C, and the fourth photodetector 320D have the same configuration. Hereinafter, when the first photodetector 320A, the second photodetector 320B, the third photodetector 320C, and the fourth photodetector 320D are not particularly distinguished, they are simply referred to as a photodetector 320. The four are collectively referred to as each photodetector 320.

Each photodetector 320 has a light emitting unit 321 that irradiates light toward the rotor core 10 supported by the support base 310, and a light receiving unit 322 that receives light that has passed through the rotor core 10.

In each photodetector 320, the light emitting unit 321 and the light receiving unit 322 are arranged so as to correspond to each other in the X-axis direction. For example, the light emitting unit 321 is arranged on the + X side of the support base 310, and the light receiving unit 322 is arranged on the −X side of the support base 310. The light emitting unit 321 and the light receiving unit 322 constituting each light detection unit 320 are arranged so as to sandwich the support base 310 from both sides in the X-axis direction. The light emitting unit 321 constituting each photodetector unit 320 is attached to a predetermined position with respect to the support base 310 via the first attachment member 323. The light receiving unit 322 constituting each photodetector unit 320 is attached to a predetermined position with respect to the support base 310 via the second attachment member 324.

The support base 310 has a recess 310a that supports the rotor core 10 and a support pin 311 that extends upward from the bottom surface of the recess 310a. The support pin 311 is inserted into the shaft through hole 11 provided in the rotor core 10. The support base 310 can stably support the rotor core 10 in the recess 310a by inserting the support pin 311 into the rotor core 10. Since the rotor core 10 is stably supported by the support base 310 by the support pin 311 in this way, the light detection unit 320 is detected with high accuracy, so that the identification accuracy of the information about the rotor core 10 is improved.

The support base 310 is rotatable around a predetermined rotation axis O1. The rotation shaft O1 passes through the center of the support pin 311. The support base 310 can change the position of the rotor core 10 with respect to the insertion device 200 described later by rotating around the rotation shaft O1.

The support base 310 is provided with a first through hole 312 and a second through hole 313. The first through hole 312 and the second through hole 313 penetrate the support base 310 in the X-axis direction. The first through hole 312 and the second through hole 313 are provided so as to reach the inside of the recess 310a from the outer peripheral surface 310b of the support base 310. The first through hole 312 is provided at a position corresponding to the light emitting unit 321 of the photodetector unit 320. The second through hole 313 is provided at a position corresponding to the light receiving unit 322 of the photodetector unit 320.

In the rotor core identification device 300, the light emitting unit 321 irradiates the light receiving unit 322 with light through the first through hole 312 penetrating the support base 310. Further, the light receiving unit 322 receives light through the second through hole 313 that penetrates the support base 310.

Each photodetector 320 detects whether or not the light emitted from the light emitting unit 321 is blocked by the rotor core 10.
The light emitted from the light emitting unit 321 reaches the recess 310a through the first through hole 312 and is incident on the rotor core 10 arranged in the recess 310a. For example, if the rotor core 10 located on the optical path of the light emitted from the light emitting unit 321 has a slit structure penetrating in the X-axis direction, the light from the light emitting unit 321 passes through the first through hole 312, the rotor core 10 and the rotor core 10. It passes through the second through hole 313 and is received by the light receiving unit 322.

On the other hand, for example, if the rotor core 10 located on the optical path of the light emitted from the light emitting unit 321 does not have a slit structure, the light from the light emitting unit 321 passes through the first through hole 312 and then is shielded by the rotor core 10. The light is not received by the light receiving unit 322.

Each light detection unit 320 transmits the light reception result in the light receiving unit 322, that is, the light detection result to the identification unit 330. For example, each photodetector 320 determines that when the light receiving unit 322 receives light, the light of the light emitting unit 321 is not blocked, and transmits an OFF signal to the identification unit 330. Further, each photodetector 320 determines that the light of the light emitting unit 321 is blocked when the light receiving unit 322 does not receive light, and transmits an ON signal to the identification unit 330.

Here, the configuration of the rotor core 10 of the present embodiment will be described. Hereinafter, unless otherwise specified in the description of the structure of the rotor core 10, the direction parallel to the central axis of the rotor core 10 is simply referred to as "axial direction", and the direction orthogonal to the central axis is simply referred to as "diametrical direction". The direction around is called the "circumferential direction".

FIG. 5 is a perspective view showing a basic configuration of the rotor core 10.
As shown in FIG. 5, the rotor core 10 has a cylindrical shape extending in the axial direction along the central axis J. A shaft through hole 11 for inserting a shaft (not shown) is provided at the radial center of the rotor core 10. A plurality of magnet insertion holes 12 penetrating in the axial direction are provided on the outer side in the radial direction of the rotor core 10 in the circumferential direction. The rotor core 10 has a plurality of through holes (third through holes) 16 that penetrate the outer peripheral surface 10a in a direction orthogonal to the radial direction. The through hole 16 is connected to the magnet insertion hole 12. In the rotor core 10 of the present embodiment, for example, three through holes 16 are provided so as to be lined up in the axial direction.

The rotor core 10 is formed by laminating a plurality of steel plates 13 in the axial direction. The plurality of steel plates 13 constituting the rotor core 10 include a first laminated steel plate (first steel plate) 14 and a second laminated steel plate (second steel plate) 15. The first laminated steel plate 14 and the second laminated steel plate 15 each expand in the radial direction with respect to the central axis J of the rotor core 10.

The configuration of the rotor core 10 of the present embodiment is slightly different depending on the model of the corresponding rotor, but the basic configuration is the same. That is, the rotor core 10 of the present embodiment has a configuration in which, for example, the number and the stacking order of the first laminated steel plate 14 and the second laminated steel plate 15 to be laminated in the axial direction are different depending on the model of the rotor.
In the rotor core 10 shown in FIG. 5, the front surface 10b is directed upward and the back surface 10c is directed downward.

FIG. 6A is a plan view showing a schematic configuration of the first laminated steel plate 14.
As shown in FIG. 6A, the first laminated steel plate 14 has a first base portion 14a, a penetrating portion 14b, and a flake portion 14c. The first base portion 14a is located on the outer side in the radial direction of the central axis J. The outer shape of the first base portion 14a is substantially octagonal. The first base portion 14a has a hole portion 14d forming a shaft through hole 11 at its radial center portion.

The penetrating portion 14b is provided on the radial outer side of each of the eight sides of the outer edge portion 14a1 of the first base portion 14a. The penetrating portion 14b is configured as a gap between the first base portion 14a and the flake portion 14c. Each of the eight through portions 14b constitutes a magnet insertion hole 12.

The flaky portion 14c is arranged on the outer side in the radial direction of the first base portion 14a, separated from each other via the penetrating portion 14b. A plurality of the flaky portions 14c are arranged at predetermined intervals in the circumferential direction. Eight flaky portions 14c are provided on the radial outer side of each of the eight sides of the outer edge portion 14a1 of the first base portion 14a. The flaky portion 14c is formed in a substantially semicircular shape. A gap (opening) 17 forming a through hole 16 is provided between the flanks 14c adjacent to each other in the circumferential direction.

FIG. 6B is a plan view showing a schematic configuration of the second laminated steel plate 15.
As shown in FIG. 6B, the second laminated steel plate 15 has a second base portion 15a, a penetrating portion 15b, an annular portion 15c, and a connecting portion 15k.

The outer shape of the second base portion 15a is substantially octagonal. The second base portion 15a has a hole portion 15d forming a shaft through hole 11 at the center portion in the radial direction thereof. The penetrating portion 15b is provided on the radial outer side of each of the eight sides of the outer edge portion 15a1 of the second base portion 15a. The penetrating portion 15b is configured as a gap between the second base portion 15a, the annular portion 15c, and the connecting portion 15k. Each of the eight through portions 15b constitutes a magnet insertion hole 12.

The annular portion 15c extends in the circumferential direction and has a shape similar to the shape in which eight piece-shaped portions 41c of the first laminated steel plate 14 are connected in an annular shape. The annular portion 15c is connected to the outer side of the second base portion 15a in the radial direction via the connecting portion 15k. The annular portion 15c is provided on the radial outer side of the second base portion 15a via the penetrating portion 15b.

The annular portion 15c has a large diameter portion 15c1 and a small diameter portion 15c2 having different outer diameters. The large diameter portion 15c1 is arranged at the same position as the flake portion 14c of the first laminated steel plate 14 in the axial direction. The large-diameter portion 15c1 has the same plan-view shape as the flake-shaped portion 14c. The small diameter portion 15c2 is arranged at the same position as the gap 17 provided between the flanked portions 14c of the first laminated steel plate 14 adjacent to each other in the circumferential direction in the axial direction. The small diameter portion 15c2 has a long plate shape in which the plan view shape connects the large diameter portions 15c1 adjacent to each other in the circumferential direction. The small diameter portion 15c2 connects the ends of the two large diameter portions 15c1 to each other. The small diameter portion 15c2 corresponds to a partition portion for partitioning the through hole 16 in the second laminated steel plate 15. In the present embodiment, the second laminated steel plate 15 includes a small diameter portion (partition portion) 15c2 for partitioning the through hole 16.

In the rotor core 10 of the present embodiment, the flake portion 14c of the first laminated steel plate 14 and the large diameter portion 15c1 of the annular portion 15c of the second laminated steel plate 15 overlap in the axial direction, and the gap 17 of the first laminated steel plate 14 overlaps. The first laminated steel plate 14 and the second laminated steel plate 15 are laminated at a position where the outer edge portions are aligned so as to overlap the small diameter portion 15c2 of the second laminated steel plate 15.

Since the rotor core 10 of the present embodiment has a different laminated structure of the steel plates 13 on the front and back surfaces, the front and back surfaces can be discriminated as described later.

Subsequently, a method in which the rotor core identification device 300 identifies the posture and model of the rotor core 10 will be described. 7A and 7B are diagrams conceptually showing the identification method by the rotor core identification device 300.

7A and 7B are views of the rotor core 10 supported by the support base 310 as viewed from the −Y side. FIG. 7A is a diagram showing a state in which the rotor core 10 is installed on the support base 310 with the surface 10b facing upward. FIG. 7B is a diagram showing a state in which the rotor core 10 is installed on the support base 310 with the back surface 10c facing upward. In the present embodiment, the posture in which the surface 10b faces upward is the correct posture in the rotor core 10.

When identifying the rotor core 10 in the rotor core identification device 300, as shown in FIGS. 7A and 7B, the rotor core 10 has a through hole 16, a first through hole 312, and a second through hole 313 along the X-axis direction. It is installed on the support base 310 so as to line up in a straight line. The rotor core 10 is provided with three through holes 16 arranged side by side in the axial direction when the rotor core 10 is installed on the support base 310.

Further, in the rotor core identification device 300 of the present embodiment, the second photodetector 320B is arranged above the first photodetector 320A, and the fourth photodetector 320D is the third photodetector 320C. It is located above. That is, the second photodetector 320B, the first photodetector 320A, the fourth photodetector 320D, and the third photodetector 320C are arranged in this order in the vertical direction (direction toward the −Z side). ing.

In the rotor core identification device 300 of the present embodiment, since each photodetector 320 is arranged at different heights in the vertical direction, information about the rotor core 10 can be identified with high accuracy by combining the detection signals by the photodetector 320.

Here, in the rotor core 10 installed on the support base 310 in the correct posture as shown in FIG. 7A, the three through holes 16 arranged from the bottom to the top are sequentially referred to as the lower through hole 16A, the middle through hole 16B, and the upper through hole 16C. Call.

As shown in FIG. 5, in the rotor core 10 of the present embodiment, for example, the lower through hole 16A and the middle through hole 16B are formed by stacking five first laminated steel plates 14. The upper through hole 16C is formed by stacking, for example, six first laminated steel plates 14. That is, as shown in FIG. 7A, the axial dimension D1 in the lower through hole 16A and the middle through hole 16B is equal, and the axial dimension D2 in the upper through hole 16C is larger than the above dimension D1.

In the state shown in FIG. 7A, the light L1 emitted from the light emitting unit 321 of the first photodetector 320A receives light through the first through hole 312, the middle through hole 16B in the rotor core 10, and the second through hole 313. The light is received by the unit 322. Specifically, the light L1 from the light emitting unit 321 is transmitted to the rotor core through the gap 17 forming the through hole 16 (middle through hole 16B) in the first laminated steel plate 14 and the magnet insertion hole 12 connected to the middle through hole 16B. It passes through 10 and is incident on the light receiving unit 322. The first photodetector 320A determines that the light L1 of the light emitting unit 321 is not shielded, and transmits an OFF signal to the identification unit 330. The first photodetector 320A shown in FIG. 7A corresponds to the "first photodetector".

In the state shown in FIG. 7A, the light L2 emitted from the light emitting unit 321 of the second photodetector 320B receives light through the first through hole 312, the upper through hole 16C in the rotor core 10, and the second through hole 313. The light is received by the unit 322. The second photodetector 320B determines that the light L2 of the light emitting unit 321 is not shielded, and transmits an OFF signal to the identification unit 330. The second photodetector 320B shown in FIG. 7A corresponds to the "first photodetector".

In the state shown in FIG. 7A, the light L3 emitted from the light emitting unit 321 of the third photodetector unit 320C is shielded by the rotor core 10. Specifically, the light L3 emitted from the light emitting unit 321 is shielded by the second laminated steel plate 15 constituting the rotor core 10. The third photodetector 320C determines that the light L3 of the light emitting unit 321 is blocked, and transmits an ON signal to the identification unit 330.

In the state shown in FIG. 7A, the light L4 emitted from the light emitting unit 321 of the fourth photodetector 320D receives light through the first through hole 312, the lower through hole 16A in the rotor core 10, and the second through hole 313. The light is received by the unit 322. The fourth photodetector 320D determines that the light L4 of the light emitting unit 321 is not shielded, and transmits an OFF signal to the identification unit 330. The fourth photodetector 320D shown in FIG. 7A corresponds to the "first photodetector".

In this way, the identification unit 330 acquires a signal pattern composed of a combination of "ON signal" or "OFF signal" as the detection result of each photodetection unit 320.

Subsequently, as shown in FIG. 7B, a case of identifying the rotor core 10 having the wrong posture with the back surface 10c facing upward will be described. As shown in FIG. 7B, the rotor core 10 in an incorrect posture with the back surface 10c facing upward is in a state in which the rotor core 10 is upside down from the state shown in FIG. 7A. The lower through holes 16A are arranged from the bottom to the top.

In the rotor core 10 of the present embodiment, the identification unit 330 acquires different signal patterns from the detection results of each photodetector 320 as described later, depending on the posture of the rotor core 10 installed on the support base 310.

In the state shown in FIG. 7B, the light L1 from the light emitting unit 321 of the first photodetector 320A is received by the light receiving unit 322 through the first through hole 312, the middle through hole 16B, and the second through hole 313. To. Specifically, the light L1 from the light emitting unit 321 is transmitted to the rotor core through the gap 17 forming the through hole 16 (middle through hole 16B) in the first laminated steel plate 14 and the magnet insertion hole 12 connected to the middle through hole 16B. It passes through 10 and is incident on the light receiving unit 322. The first photodetector 320A determines that the light L1 of the light emitting unit 321 is not shielded, and transmits an OFF signal to the identification unit 330. In this embodiment, the first photodetector 320A shown in FIG. 7B corresponds to the "first photodetector".

In the state shown in FIG. 7B, the light L2 emitted from the light emitting unit 321 of the second photodetector unit 320B is shielded by the second laminated steel plate 15 constituting the rotor core 10. Specifically, the light L2 from the light emitting portion 321 is shielded by the small diameter portion (partition portion) 15c2 that partitions the through hole 16 in the second laminated steel plate 15. The second photodetector 320B determines that the light L2 of the light emitting unit 321 is blocked, and transmits an ON signal to the identification unit 330. The second photodetector 320B shown in FIG. 7B corresponds to the "second photodetector". In the present embodiment, the first photodetector 320A and the second photodetector 320B are provided at different positions (heights) in the axial direction.

In the state shown in FIG. 7B, the light L3 emitted from the light emitting unit 321 of the third photodetector unit 320C is shielded by the rotor core 10. Specifically, the light L3 emitted from the light emitting unit 321 is shielded by the second laminated steel plate 15 constituting the rotor core 10. The third photodetector 320C determines that the light L3 of the light emitting unit 321 is blocked, and transmits an ON signal to the identification unit 330.

In the state shown in FIG. 7B, the light L4 emitted from the light emitting unit 321 of the fourth photodetector 320D receives light through the first through hole 312, the upper through hole 16C in the rotor core 10, and the second through hole 313. The light is received by the unit 322. The fourth photodetector 320D determines that the light L4 of the light emitting unit 321 is not shielded, and transmits an OFF signal to the identification unit 330. The fourth photodetector 320D shown in FIG. 7B corresponds to the "first photodetector".

In this way, the identification unit 330 acquires a signal pattern composed of a combination of an "ON signal" and an "OFF signal" as a detection result in each photodetection unit 320.

Here, comparing the signal pattern acquired by the identification unit 330 from the rotor core 10 shown in FIG. 7A with the signal pattern acquired by the identification unit 330 from the rotor core 10 shown in FIG. 7B, the detection of the second photodetector 320B is compared. The results are different. That is, the signal pattern acquired by the identification unit 330 differs depending on the posture of the rotor core 10 installed on the support base 310.

Specifically, the identification unit 330 stores data regarding the detection results of each photodetector 320 corresponding to the posture of the rotor core 10, for example. The identification unit 330 can identify the posture of the rotor core 10 installed on the support base 310 by comparing the detection result of each photodetection unit 320 with the stored data. The identification unit 330 may notify the operator, for example, by displaying the identification result on the display unit (not shown) or generating an alarm sound. Based on the identification result, the operator can, for example, invert the front and back of the rotor core 10 and re-install it on the support base 310. This makes it possible to prevent the occurrence of defects in the subsequent magnet insertion step.

In the rotor core 10, for example, the number of the first laminated steel plate 14 and the second laminated steel plate 15 laminated in the axial direction and the lamination position are different for each model corresponding to the type of the rotor to be manufactured. That is, the rotor core 10 of the present embodiment has a structure in which the positions and numbers of the through holes 16 in the axial direction are different for each model. Therefore, in the rotor core identification device 300 of the present embodiment, the identification unit 330 can acquire different signal patterns according to the model of the rotor core 10 as the detection result of each photodetection unit 320.

The identification unit 330 stores, for example, data on the detection results of each photodetector 320 corresponding to each model of the rotor core 10. The identification unit 330 can identify the model of the rotor core 10 installed on the support base 310 by comparing the signal pattern acquired from the detection result of each photodetection unit 320 with the data stored in advance.

The identification unit 330 may notify the operator, for example, by displaying the identification result on the display unit (not shown) or generating an alarm sound. Based on the identification result, the operator can, for example, re-install the correct type of rotor core 10 on the support base 310. This makes it possible to prevent the occurrence of defects in the subsequent magnet insertion step.

As described above, according to the rotor core identification device 300 of the present embodiment, the posture and model of the rotor core 10 can be simplified as information about the rotor core 10 supported by the support base 310 based on the detection result of each photodetector 320. Can be identified. The rotor core identification device 300 can identify in advance that the rotor core 10 is installed in the correct posture with respect to the support base 310 and that the rotor core 10 installed on the support base 310 is of an appropriate model.

Therefore, the rotor manufacturing apparatus 1000 of the present embodiment is provided with the rotor core identification device 300, so that the rotor core 10 of a desired model installed on the support base 310 in the correct posture is magnet-inserted by the insertion apparatus 200. be able to. Therefore, the rotor manufacturing apparatus 1000 of the present embodiment has high reliability in which a rotor can be manufactured based on the acquired information about the rotor core 10.

(Insert device)
Subsequently, the configuration of the insertion device 200 will be described.
The insertion device 200 is a device for inserting the magnet supplied from the magnet supply device 100 into the rotor core 10 supported by the support base 310 of the rotor core identification device 300. In the following description, the magnet M1 having a predetermined length supplied from the magnet supply device 100 to the insertion device 200 will be referred to as a magnet MG.

FIG. 8 is a plan view of the insertion device 200 as viewed from the + X side. FIG. 9 is a plan view of the insertion device 200 as viewed from the + Y side.
As shown in FIGS. 8 and 9, the insertion device 200 includes a magnet holding unit 210, a magnet inserting unit 220, and a magnet detecting unit (detecting unit) 230. The insertion device 200 is arranged above the support base 310 that supports the rotor core 10. In FIG. 8, a part of the member covering the magnet holding portion 210 is omitted in order to make the configuration of the magnet holding portion 210 easier to see.

The magnet holding unit 210 holds the magnet MG supplied from the magnet supply device 100. The magnet insertion portion 220 pushes out the magnet MG held by the magnet holding portion 210, and inserts the magnet MG into the magnet insertion hole 12 of the rotor core 10 supported by the support base 310. The magnet detection unit 230 detects the insertion state of the magnet MG with respect to the magnet holding unit 210.

The magnet holding portion 210 is rotatable around a rotation axis O extending along a horizontal plane parallel to the XY plane. The magnet holding portion 210 has a first accommodating groove 205 and a second accommodating groove 206. The first accommodating groove 205 is a groove accommodating the magnet MG supplied from the magnet supply device 100 and extending in the radial direction of the rotation shaft O. The second accommodating groove 206 is a groove extending in the radial direction of the rotation shaft O and intersecting the first accommodating groove 205, and accommodates the magnet MG supplied from the magnet supply device 100.

The magnet holding portion 210 includes a main body portion 201, a driving portion 202, a guide mechanism 203, a cover member 204, and a stopper portion 207. The main body portion 201 includes a base portion 201a and a disc portion 201b provided integrally with the base portion 201a. The drive unit 202 is composed of, for example, a motor. The drive unit 202 is fixed to the base unit 201a of the main body unit 201, and makes the main body unit 201 rotatable around the rotation shaft O.

The first accommodating groove 205 and the second accommodating groove 206 are provided in the main body 201 so as to be orthogonal to each other when viewed from the axial direction along the rotation axis O. The first accommodating groove 205 and the second accommodating groove 206 intersect on the rotation axis O. The first accommodating groove 205 and the second accommodating groove 206 are provided so as to penetrate the disk portion 201b and partially reach the base portion 201a in the X-axis direction along the rotation axis O (see FIG. 9). ).

Here, the direction orthogonal to the rotation axis O is referred to as the radial direction of the rotation axis O. As shown in FIG. 8, the first accommodating groove 205 and the second accommodating groove 206 are provided so as to penetrate the main body 201 in the radial direction of the rotating shaft O, respectively.

As shown in FIG. 8, the magnet holding portion 210 rotates the main body portion 201 around the rotation axis O to bring the first accommodating groove 205 into a horizontal state along the XY plane, and the magnet MG supplied from the magnet supply device 100. Is housed in the first storage groove 205.

In the present embodiment, the rotation position of the magnet holding portion 210 capable of accommodating the magnet MG supplied from the magnet supply device 100 in the first accommodating groove 205 is referred to as a first rotation position R1. The stopper portion 207 comes into contact with the flat surface portion 209 of the base portion 201a of the main body portion 201 when the magnet holding portion 210 is in the first rotation position R1.

In the insertion device 200 of the present embodiment, the magnet detection unit 230 detects the insertion state of the magnet MG with respect to the magnet holding unit 210 at the first rotation position R1. In the magnet holding unit 210, the driving unit 202 rotates the main body unit 201 at the timing when the magnet detecting unit 230 detects the insertion of the magnet MG. As a result, the insertion device 200 can change the holding posture of the magnet MG after the magnet MG is securely accommodated in the first accommodating groove 205 or the second accommodating groove 206.

FIG. 10A is a diagram showing a state in which the magnet holding portion 210 at the first rotation position R1 is rotated 90 degrees counterclockwise of the rotation axis O.
When the magnet holding portion 210 at the first rotation position R1 rotates 90 degrees counterclockwise with respect to the rotation axis O, the first accommodating groove 205 moves to a position facing the magnet insertion portion 220 as shown in FIG. 10A. ..

According to the magnet holding portion 210 of the present embodiment, the posture of the magnet MG can be changed by 90 degrees. As a result, the posture of the magnet MG supplied from the horizontal direction by the magnet supply device 100 can be changed in the vertical direction.

The magnet insertion portion 220 pushes out the magnet MG accommodated in the first accommodating groove 205, and inserts the magnet MG into the rotor core 10 supported by the support base 310. The magnet insertion portion 220 includes a rod-shaped member 211 extending in the vertical direction (vertical direction) and a main body portion 212 for raising and lowering the rod-shaped member 211 in the vertical direction.

In the present embodiment, the rotation position of the magnet holding portion 210 that pushes out the magnet MG from the first accommodation groove 205 is referred to as a second rotation position R2. The stopper portion 207 comes into contact with the flat surface portion 209 of the base portion 201a of the main body portion 201 when the magnet holding portion 210 is at the second rotation position R2.

Further, in the magnet holding portion 210 of the present embodiment, when the magnet holding portion 210 is in the second rotation position R2, the second accommodating groove 206 is in a state where the magnet MG can be accommodated from the magnet supply device 100 as shown in FIG. 10A. It becomes.

As described above, when the magnet holding portion 210 is in the second rotation position R2, the magnet inserting portion 220 inserts the rod-shaped member 211 into the first accommodating groove 205 of the magnet holding portion 210, and inserts the rod-shaped member 211 into the first accommodating groove 205. The housed magnet MG can be pushed out and inserted into the rotor core 10.

The magnet insertion portion 220 of the present embodiment can push out the magnet MG along the vertical direction. As a result, according to the magnet insertion portion 220 of the present embodiment, the magnet MG can be inserted from the vertical direction, so that the magnet MG is inserted into the magnet insertion hole 12 of the rotor core 10 installed in the support base 310. Becomes easier.

FIG. 10B is a diagram showing a state in which the magnet holding portion 210 at the second rotation position R2 is rotated 90 degrees clockwise of the rotation axis O and returned to the first rotation position R1.
As shown in FIG. 10B, the magnet holding portion 210 of the present embodiment rotates the magnet holding portion 210 at the second rotation position R2 after inserting the magnet MG accommodated in the first accommodating groove 205 into the rotor core 10. By rotating it 90 degrees clockwise with respect to the axis O, it returns to the first rotation position R1 again. As a result, the magnet holding unit 210 can again accommodate the magnet MG supplied from the magnet supply device 100 in the first accommodating groove 205. When the magnet holding portion 210 returns to the first rotation position R1, the flat surface portion 209 of the base portion 201a and the stopper portion 207 come into contact with each other.

In the magnet holding portion 210 of the present embodiment, the rotation direction (counterclockwise direction) when switching from the first rotation position R1 to the second rotation position R2 and the rotation when switching from the second rotation position R2 to the first rotation position R1. The direction is opposite to the direction (clockwise).

As described above, according to the magnet holding portion 210 of the present embodiment, the first rotation in which the magnet MG supplied from the magnet supply device 100 is accommodated in the first accommodating groove 205 by rotating 90 degrees around the rotation axis O. The position R1 and the second rotation position R2 in which the magnet insertion portion 220 pushes out the magnet MG from the first accommodating groove 205 can be switched. According to this configuration, the rotation angle of the magnet holding portion 210 when switching between the first rotation position R1 and the second rotation position R2 can be reduced as compared with the configuration of rotating in one direction around the rotation axis O. Therefore, the position switching time by the magnet holding portion 210 can be shortened.

Further, the magnet holding portion 210 of the present embodiment switches between the first rotation position R1 and the second rotation position R2 by rotating the main body portion 201 around the rotation axis O until the stopper portion 207 is brought into contact with the base portion 201a. Can be done. Therefore, when the magnet holding unit 210 switches between the first rotation position R1 and the second rotation position R2, it becomes easy to control the drive unit 202 that drives the main body unit 201.

In the magnet holding portion 210 of the present embodiment, the first accommodating groove 205 and the second accommodating groove 206 have a rotationally symmetric positional relationship rotated by 90 degrees around the rotation axis O. In the magnet holding portion 210 of the present embodiment, when the magnet holding portion 210 is in the first rotation position R1, the second accommodating groove 206 is arranged to face the magnet inserting portion 220.

When the magnet holding portion 210 is in the first rotation position R1, the magnet inserting portion 220 is accommodated in the second accommodating groove 206 by inserting the rod-shaped member 211 into the second accommodating groove 206 as shown in FIG. 10B. The magnet MG can be pushed out and inserted into the rotor core 10.

In the magnet holding portion 210 of the present embodiment, when the magnet holding portion 210 is in the second rotation position R2, the magnet MG is accommodated in the second accommodating groove 206 from the magnet supply device 100 as described above.

As described above, according to the magnet insertion portion 220 of the present embodiment, when the magnet holding portion 210 is in the first rotation position R1, the magnet MG is supplied from the magnet supply device 100 into the first accommodating groove 205 and the second magnet MG is supplied. The magnet MG housed in the housing groove 206 can be inserted into the rotor core 10.

Further, according to the magnet inserting portion 220 of the present embodiment, when the magnet holding portion 210 is in the second rotation position R2, the magnet MG accommodated in the first accommodating groove 205 is inserted into the rotor core 10 and the second accommodating portion 210 is inserted. The magnet MG can be inserted into the groove 206 from the magnet supply device 100.

According to the magnet insertion unit 220 of the present embodiment, the magnet MG supplied from the magnet supply device 100 is rotated by 90 degrees and inserted into the rotor core 10 to automate the insertion work of the magnet MG into the rotor core 10. Can be done.

Further, according to the magnet insertion portion 220 of the present embodiment, the supply of the magnet MG to the magnet holding portion 210 and the insertion of the magnet into the rotor core 10 can be performed in synchronization with each other. Therefore, the work of inserting the magnet MG into the rotor core 10 can be efficiently performed.

By the way, it is structurally difficult to avoid variations that occur between the dimensions of the magnet insertion hole 12 and the magnet M. For example, when the magnet M has the maximum dimension and the magnet insertion hole 12 has the minimum dimension, the clearance between the magnet insertion hole 12 and the magnet M becomes very small.

The insertion device 200 of the present embodiment guides the magnet MG, which is pushed out by the magnet insertion portion 220 and moves in the first accommodation groove 205 or the second accommodation groove 206, into the magnet insertion hole 12 of the rotor core 10 by the guide mechanism 203. I am trying to do it.

As shown in FIG. 9, the guide mechanism 203 has a first member 203a and a second member 203b. The first member 203a is inserted into a slit portion 208 provided in the circumferential direction of the connecting portion 201c connecting the disc portion 201b and the base portion 201a. The slit portion 208 is connected to a part of the first accommodating groove 205 and the second accommodating groove 206.

FIG. 11 is a diagram showing a cross-sectional structure taken along the line AA of FIG.
The first member 203a applies an urging force for urging the members in contact with the −Y side. The first member 203a is fixed to a member independent of the main body 201, and is not in contact with the main body 201 (disk portion 201b). Therefore, the first member 203a does not interfere with the rotational operation of the main body 201.

As shown in FIG. 11, when the magnet holding portion 210 is in the first rotation position R1, the tip 203a1 of the first member 203a can project into the second accommodating groove 206 via the slit portion 208. Further, when the magnet holding portion 210 is in the second rotation position R2, the tip 203a1 of the first member 203a can protrude into the first accommodating groove 205.

As shown in FIG. 9, the second member 203b of the guide mechanism 203 is provided below the rotation axis O in the main body 201. For example, the second member 203b has a size that overlaps with at least the tip 203a1 of the first member 203a in a plan view from the X-axis direction along the rotation axis O.

The second member 203b is fixed to a member independent of the main body 201. There is a slight gap between the second member 203b and the disk portion 201b in the main body portion 201. That is, the second member 203b is not in contact with the disk portion 201b. As a result, when the main body 201 rotates, the main body 201 and the second member 203b do not come into contact with each other, so that the second member 203b does not interfere with the rotation operation of the main body 201.

When the magnet holding portion 210 is in the first rotation position R1, the second member 203b covers a part of the lower part of the second accommodating groove 206 from the + X side. Further, when the magnet holding portion 210 is in the second rotation position R2, the second member 203b covers a part of the lower part of the first accommodating groove 205 from the + X side.

Subsequently, the operation of the guide mechanism 203 will be described. FIG. 12 is a diagram showing the operation of the guide mechanism 203.
For example, a case where the magnet holding portion 210 accommodating the magnet M in the first accommodating groove 205 at the first rotation position R1 rotates to the second rotation position R2 will be described.

As shown in FIG. 12, when the magnet holding portion 210 rotates to the second rotation position R2, the magnet MG moves downward in the first accommodating groove 205 due to its own weight, and for example, the first protruding into the first accommodating groove 205. It abuts on the tip 203a1 of the member 203a.

When the magnet MG is pushed downward by the magnet insertion portion 220, the first member 203a moves to the + Y side and guides the magnet MG to the lower side of the first accommodating groove 205. The first member 203a is pushed by the magnet insertion portion 220 to apply an urging force F2 that urges the magnet MG that advances downward in the first accommodating groove 205 to the −Y side.

The magnet MG moves downward in the Y-axis direction while being sandwiched between the inner surface of the first accommodating groove 205 and the first member 203a. That is, the first member 203a functions as a guide mechanism for moving the magnet MG below the first accommodating groove 205 in a state where the position in the Y-axis direction is defined.

Further, as shown in FIG. 9, the second member 203b applies an urging force F1 that urges the magnet MG that advances downward in the first accommodating groove 205 to the −X side. Therefore, the magnet MG moves downward in the X-axis direction while being sandwiched between the inner surface of the first accommodating groove 205 and the second member 203b. That is, the second member 203b functions as a guide mechanism for moving the magnet MG below the first accommodating groove 205 in a state where the position in the X-axis direction is defined.

In the present embodiment, the upper surface corner portion 203R of the tip end 203a1 of the first member 203a has a chamfered portion 203RM (see FIG. 11). As a result, when the magnet MG is pushed downward, the upper surface corner portion 203R of the tip 203a1 is less likely to be caught by the magnet MG. This facilitates the pushing operation of the magnet MG by the magnet inserting portion 220.

The same can be said for the case where the magnet holding portion 210 accommodating the magnet MG in the second accommodating groove 206 at the second rotation position R2 rotates to the first rotation position R1.

That is, when the magnet holding portion 210 rotates to the first rotation position R1, the magnet MG moves downward in the second accommodating groove 206 due to its own weight, and for example, the tip of the first member 203a protruding into the second accommodating groove 206. It hits 203a1. The magnet MG moves downward in the Y-axis direction while being sandwiched between the inner surface of the second accommodating groove 206 and the first member 203a. Further, the magnet MG moves downward in the X-axis direction while being sandwiched between the inner surface of the second accommodating groove 206 and the second member 203b.

As described above, the guide mechanism 203 can guide the insertion of the magnet MG into the magnet insertion hole 12 of the rotor core 10 in a state where the positions of the magnet MG are restricted in the two directions (X-axis direction and Y-axis direction). ..

Therefore, according to the insertion device 200 of the present embodiment, by providing the guide mechanism 203, the magnet MG is stably inserted into the magnet insertion hole 12 of the rotor core 10 supported by the support base 310 even with a small clearance. can do. Further, since the allowable width of the dimensional variation in the magnet MG is increased, the cost of the magnet MG can be reduced.

In the insertion device 200 of the present embodiment, the cover member 204 covers the portion of the main body 201 that is not covered by the second member 203b, as shown in FIG. The cover member 204 covers not only the upper half of the main body 201 located above the rotation axis O but also a portion slightly below the rotation axis O in a plan view from the X-axis direction along the rotation axis O. As such, it is provided.

The cover member 204 is fixed to a member independent of the main body 201. There is a slight gap between the cover member 204 and the main body 201. The cover member 204 prevents foreign matter such as dust and dirt from entering the first accommodating groove 205 and the second accommodating groove 206 without hindering the rotational operation of the main body 201.

The cover member 204 has + X in the entire first accommodating groove 205, the upper half of the rotating shaft O in the second accommodating groove 206, and a part below the rotating shaft O when the magnet holding portion 210 is in the first rotating position R1. Cover the side. As a result, the cover member 204 suppresses the magnet MG housed in the first accommodating groove 205 from the insertion device 200 from jumping out to the + X side.

Further, the cover member 204 suppresses the magnet MG housed in the first accommodating groove 205 from jumping out to the + X side when the magnet holding portion 210 switches from the first rotation position R1 to the second rotation position R2.

Further, when the magnet holding portion 210 is in the second rotation position R2, the cover member 204 includes the entire second accommodating groove 206, the upper half of the rotation shaft O in the first accommodation groove 205, and the lower part of the rotation shaft O. Cover a part. As a result, the cover member 204 suppresses the magnet MG housed in the second accommodating groove 206 from the insertion device 200 from jumping out to the + X side.

The support base 310 rotates the rotor core 10 by 45 degrees around the rotation shaft O1 at the timing when the insertion of the magnet MG into each magnet insertion hole 12 of the rotor core 10 is completed. The insertion device 200 sequentially inserts the magnet MG into the magnet insertion holes 12 newly arranged so as to face each other in accordance with the rotation of the support base 310.

The rotor core 10 in which the magnet MG is inserted into all the magnet insertion holes 12 as described above is delivered to the molding apparatus 400. The molding apparatus 400 performs insert molding in which resin is injected into the gap between the magnet insertion hole 12 of the rotor core 10 and the magnet MG. In this way, the rotor manufacturing by the rotor manufacturing apparatus 1000 is completed.

Although the embodiments and modifications of the present invention have been described above, the configurations and combinations thereof in the embodiments are examples, and the configurations are added, omitted, replaced, and the like without departing from the spirit of the present invention. Other changes are possible. Further, the present invention is not limited to the embodiments.

For example, the rotor manufacturing apparatus 1000 of the above embodiment has been described as an example in which it corresponds to the manufacture of three types of rotors, but it may correspond to the manufacture of two or four or more types of rotors. In this case, the number of pins 122 and the tip detection unit 124a may be appropriately changed according to the number of corresponding types of rotors.

Further, in the rotor core identification device 300 of the above embodiment, the case of identifying the posture and model of the rotor core 10 is given as an example of the information regarding the rotor core 10, but the presence or absence of the magnet in the rotor core 10 is identified as the information regarding the rotor core 10. You may do so. In this way, it can be identified in advance that the rotor core 10 after the magnet is inserted by mistake is installed on the support base 310. Therefore, it is possible to prevent the occurrence of a problem that the magnet is inserted into the rotor core 10 after the magnet is inserted.

10 ... rotor core, 12 ... magnet insertion hole, 100 ... magnet supply device, 200 ... insertion device, 203 ... guide mechanism, 205 ... first accommodation groove, 206 ... second accommodation groove, 210 ... magnet holding part, 220 ... magnet Insertion unit, 230 ... Magnet detection unit (detection unit), 310 ... Support base, 1000 ... Rotor manufacturing equipment, MG ... Magnet, O, O1 ... Rotation axis, R1 ... First rotation position, R2 ... Second rotation position.

Claims (10)

An insertion device that inserts a magnet into the rotor core.
A magnet holding portion that is rotatable around a rotating shaft extending along a horizontal plane and is provided with a first accommodating groove that accommodates the magnet supplied from the magnet feeding device and extends in the radial direction of the rotating shaft.
A magnet insertion portion for extruding the magnet accommodated in the first accommodating groove and inserting the magnet into the rotor core is provided.
The magnet holding portion rotates around a rotation axis to accommodate the magnet supplied from the magnet supply device in the first accommodating groove, and the magnet inserting portion accommodates the first accommodating groove. An insertion device that switches between the second rotation position that pushes out the magnet from. The insertion device according to claim 1, wherein the magnet holding portion rotates 90 degrees around the rotation axis to switch between the first rotation position and the second rotation position. The insertion device according to claim 1 or 2, further comprising a detection unit that detects the insertion state of the magnet with respect to the magnet holding unit. The insertion device according to any one of claims 1 to 3, wherein the magnet holding portion is provided with a second accommodating groove extending in the radial direction of the rotating shaft and intersecting the first accommodating groove. .. When the magnet holding portion is in the second rotation position, the magnet is supplied from the magnet supply device to the second accommodating groove.
The insertion device according to claim 4, wherein the magnet insertion portion pushes out the magnet accommodated in the second accommodating groove and inserts the magnet into the rotor core when the magnet holding portion is in the first rotation position. Claim 1 in which the rotation direction when switching from the first rotation position to the second rotation position and the rotation direction when switching from the second rotation position to the first rotation position in the magnet holding portion are opposite directions. The insertion device according to any one of claims 5. The insertion device according to any one of claims 1 to 6, wherein the magnet insertion portion pushes out the magnet along a vertical direction. The invention according to any one of claims 1 to 7, further comprising a guide mechanism for guiding the magnet, which is pushed out into the magnet insertion portion and moves in the first accommodating groove, into the magnet insertion hole of the rotor core. Insertion device. The insertion device according to claim 8, wherein the guide mechanism presses the magnet from two directions. The insertion device according to any one of claims 1 to 9.
A rotor manufacturing apparatus including a magnet supply device that supplies the magnet to the insertion device.

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