JP2013153652A5 - - Google Patents

Description

Rotor core manufacturing method and manufacturing apparatus

The present invention relates to a method and an apparatus for manufacturing a rotor core in which a magnet is inserted into a magnet hole formed in the rotor core.

In the manufacture of the rotor core, when inserting the magnet into the magnet hole of the rotor core, positioning the magnet and the magnet hole accurately so that the magnet hits the vicinity of the entrance of the magnet hole and the magnet does not crack or chip. There is a need to do.
For example, in Patent Document 1, a mounting base on which a rotor core having a plurality of magnet holes is mounted is inclined with respect to the horizontal plane together with the rotor core, and a guide mechanism on which the magnet is mounted is defined as a magnet axis. Keeping the tilted rotor core so that the axis of the magnet hole coincides with the axis of the magnet hole, press the magnet with the tilted magnet and the pusher that expands and contracts in the same direction as the magnet hole, Is disclosed.

JP 2008-113530 A

However, it is necessary to mount the magnet on the guide mechanism with the guide mechanism in a horizontal state. After the first magnet insertion process is completed, in order to insert the magnet into the magnet hole into which the magnet is not inserted. It is necessary to return the tilted guide member to the horizontal state, place a new magnet, and tilt the guide member again. Furthermore, for the rotor core, it is necessary to rotate and move the magnet hole into which the magnet has not been inserted to a position where the magnet can be inserted by the pusher, and before inserting the magnet into all the magnet holes of the rotor core. Takes a considerable amount of time.
The present invention has been made in view of such circumstances, and provides a method and an apparatus for manufacturing a rotor core in which a magnet is efficiently inserted into a magnet hole without causing a crack or a chip in the magnet. For the purpose.

A method for manufacturing a rotor core according to the present invention that meets the above-described object is provided in the magnet hole C of the rotor core having a plurality of outer peripheral regions around the shaft hole A and having a magnet hole C into which a magnet is inserted. A method of manufacturing a rotor core into which a magnet is inserted,
Temporarily arranging the magnets in the magnet holes D of a dummy member having magnet holes D formed at the same positions as the plurality of magnet holes C in the outer peripheral region around the shaft hole B;
Matching each magnet hole C of the rotor core with each magnet hole D of the dummy member;
And a step of pushing out the magnet temporarily disposed in the magnet hole D of the dummy member and inserting the magnet into the magnet hole C of the rotor core.

In the method for manufacturing a rotor core according to the present invention, at least the outlet side of the magnet hole D has an outer dimension smaller than that of the magnet hole C, and the magnet hole C and the magnet hole D have the same axis. It is preferable to align them with each other.

In the method for manufacturing a rotor core according to the present invention, it is preferable that a guide portion that opens in a tapered shape is provided on the inlet side of the magnet hole D.

In the method for manufacturing a rotor core according to the present invention, the temporary placement of the magnets in the magnet holes D of the dummy member and the magnets from the magnet holes D of the dummy member to the magnet holes C of the rotor core. These movements are preferably performed in a state in which the dummy member and the rotor core are horizontally arranged.

In the method of manufacturing a rotor core according to the present invention, it is preferable that the weight of the magnet is confirmed to be within a predetermined range before the magnet is inserted into the magnet hole D.

In the method for manufacturing a rotor core according to the present invention, the magnet may be composed of a plurality of magnet pieces.

The rotor core manufacturing apparatus according to the present invention that meets the above-mentioned object is provided in the outer peripheral region around the shaft hole A and has a magnet hole C into which the magnet is inserted. A rotor core manufacturing apparatus for inserting a shaft, wherein a shaft is fitted into the shaft hole A and the rotor core is positioned in a state where the rotor core is positioned; A dummy that is provided opposite to the rotor core that has been rotated and has a shaft hole B that has the same shape as the shaft hole A, and a magnet hole D that is formed at the same position as the plurality of magnet holes C. A member and the dummy member are advanced toward the rotor core facing each other, the shaft hole B is inserted into the shaft of the rotationally moved mounting table, and the rotor core is brought into contact or in close contact with the rotor core; Mounted on the mounting table The has a forward and backward moving means for sign magnet hole D of the dummy member in the magnet hole C of the rotor core, and a elongated member for pushing the magnet in the magnet hole D in the magnet hole C of the rotor core.
When the dummy member is in the retracted position, it is preferable to have push-in insertion means for inserting the magnet delivered in advance from the magnet storage magazine in another position into the magnet hole D in the predetermined position of the dummy member .

In the rotor core manufacturing apparatus according to the present invention, the magnet includes a plurality of magnet pieces, and weighing means for measuring the weight of the plurality of magnet pieces taken out from the magnet storage magazine includes: the magnet storage magazine; It is preferably provided between the push-in insertion means.

The method for manufacturing a rotor core according to claim 1 or 2 extrudes a magnet temporarily arranged in a magnet hole D of a dummy member having a magnet hole D formed at the same position as the plurality of magnet holes C of the rotor core. Since the magnet is inserted into the magnet hole C, it is possible to insert the magnet stably and reliably, and further, the magnet can be inserted into the plurality of magnet holes C by one-time extrusion of the magnet from the dummy member. An efficient insertion of the magnet into the hole C is possible.

In particular, in the method for manufacturing a rotor core according to claim 2, the shafts are fitted into the shaft holes A and B so that the magnet holes C of the rotor core and the magnet holes D of the dummy member are matched. It is possible to prevent a gap from being generated between the hole C and each magnet hole D and to smoothly insert the magnet into the magnet hole C.

If the key groove provided on the shaft is gradually widened at the front side of the shaft, when the fitting of the shaft into the shaft hole B of the axial hole A and the dummy members of the rotor core, axial hole A and the axial bore B It is possible to reliably arrange the rod-like protrusion provided on the shaft at the key groove position of the shaft.

If the outlet side of the magnet hole D is than the outer dimension is small magnet holes C, the magnets extruded from the magnet bore D without contacting near the entrance of the magnet hole C, securely inserted into the magnet hole C, Ya cracking magnet It is possible to prevent chipping.

If the guide section that opens in a tapered shape on the inlet side of the magnet hole D is provided, when inserting the magnets into the magnet bore D, smoothly insertable magnet without receiving large frictional the inlet side of the magnet hole D is there.

If the dummy member with the transverse arrangement to the temporary arrangement of the magnets into the magnet hole D, thereby preventing the magnet from the magnet hole D in the process of temporary arrangement of the magnets from falling off. Further, since the rotor core is horizontally arranged and the magnet is moved from the magnet hole D to the magnet hole C, it is possible to prevent the magnet from dropping from the magnet hole C in the process of inserting the magnet into the magnet hole C. .

Before the magnet is inserted into the magnet holes D, if the weight of the magnet is confirmed to be in the predetermined range, it detects in advance to a state magnet missing etc., the defective magnets magnet hole Insertion into C can be prevented.

If the magnet is composed of a plurality of magnet pieces, applicable to the production of high rotor core of the motor characteristics having a plurality of magnet pieces in each magnet hole C.

The apparatus for manufacturing a rotor core according to any one of claims 3 to 5 has a sorting mechanism for rotating and moving a mounting table on which the rotor core is placed, and a dummy member is provided so as to face the rotor core that has been rotated and moved. since, at the same time the magnet hole C of the rotor core in the one position from the magnet bore D of the dummy member as moving the magnet can be inserted in the magnet in the magnet bore D of the dummy member in the other position side The magnet can be efficiently inserted into the magnet hole C of the rotor core. Further, since the magnet holes D of the dummy member are aligned with the plurality of magnet holes C of the rotor core, the movement of the magnet from the magnet hole D of the dummy member to the magnet hole C of the rotor core is performed in a short time. It is possible to increase the production efficiency of the rotor core.

In the rotor core manufacturing apparatus according to claim 5, since the weight of the magnet composed of a plurality of magnet pieces is measured between the magnet storage magazine and the push-in insertion means, the number of magnet pieces is less than a predetermined number, It is possible to detect the presence of a chip in a piece before inserting it into the dummy member, and it is possible to stably manufacture a rotor core in which a predetermined number of non-defective magnets are inserted into each magnet hole C.

1 is a partially omitted front view of a rotor core manufacturing apparatus according to an embodiment of the present invention. It is a top view of the rotor core applied to the manufacturing apparatus of the same rotor core. (A), (B) is the top view and front sectional drawing of the mounting base of the manufacturing apparatus of the same rotor core, respectively. It is a partially-omission plan view of the manufacturing apparatus of the same rotor core. It is a partially-omission plan view of the manufacturing apparatus of the same rotor core. It is explanatory drawing which shows conveyance of the magnet of the manufacturing apparatus of the same rotor core. It is explanatory drawing which shows conveyance of the magnet of the manufacturing apparatus of the same rotor core. It is explanatory drawing which shows insertion of the magnet to the rotor core of the manufacturing apparatus of the same rotor core.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 and 2, a rotor core manufacturing apparatus 10 according to an embodiment of the present invention is a linear protrusion having a rectangular cross section disposed to face a 180 ° position as an example of a positioning means. A magnet of the rotor core 12 having a shaft hole A in which 21 is formed in the inner peripheral portion and a magnet hole C into which a plurality of resin holes 17 are provided in the outer peripheral region around the shaft hole A. In this device, a non-excited magnet 17 is inserted into the hole C.

As shown in FIGS. 1 to 8, the rotor core manufacturing apparatus 10 includes a mounting table 13 on which the rotor core 12 is placed in a state where the shaft 23 is inserted into the shaft hole A and the rotor core 12 is positioned. Rotating the arm 40 attached to the holding table 25 for temporarily fixing the mounting table 13 and rotating the arm core 12 mounted on the mounting table 13 to the +90 degree position and the −90 degree position from the horizontal state. The mechanism 14 is provided opposite to the rotor core 12 disposed laterally at the +90 degree position and the −90 degree position, respectively, and has the same shape as the shaft hole A having the linear protrusions 21 (that is, having the linear protrusions 26). ) And the dummy members 15 and 16 having the magnet holes D formed at the same positions as the plurality of magnet holes C, and the dummy members 15 and 16 are advanced toward the rotor core 12 facing each other. Placed horizontally The shaft hole B is fitted into the shaft 23 of the mounting table 13 so as to be in contact with the rotor core 12, and the magnet holes D of the dummy members 15 and 16 are formed in the magnet holes C of the rotor core 12 mounted on the mounting table 13. When the forward / backward moving means 56 for matching, the long member 102 with driving means for pushing the magnet 17 in the magnet hole D into the magnet hole C of the rotor core 12, and the dummy members 15 and 16 are in the retracted position, A push-in insertion means 59 for inserting the magnet 17 delivered in advance from the magnet storage magazine 57 at another position into the magnet hole D at a predetermined position of the members 15 and 16 is provided. Hereinafter, these will be described in more detail.

As shown in FIGS. 6 and 7, the magnet 17 is composed of a plurality of magnet pieces 19, and is a measuring device that is an example of a measuring unit that measures the weight of the plurality of magnet pieces 19 taken out from the magnet storage magazine 57. (For example, a load cell) 90 is provided between the magnet storage magazine 57 and the push-in insertion means 59. Here, as shown in FIGS. 1 and 4, the direction in which the magnet insertion units 39, 38 are located on the left and right with the sorting mechanism 14 as the center is the X-axis direction (the direction in which the magnet insertion unit 38 is present) is orthogonal to this. The horizontal direction is the Y-axis direction (front is positive with reference to the arrangement of the magnet insertion units 39 and 38 on the left and right, respectively), and the direction perpendicular to the X-axis and Y-axis is the Z-axis direction (vertical upward is positive). The core manufacturing apparatus 10 will be described.

As shown in FIG. 2, the rotor core 12 is provided with a plurality of, for example, 16 magnet holes C with a gap in the outer peripheral region around the shaft hole A. And the cross section is formed in a rectangular shape through the rotor core 12. The magnet hole C is larger than the magnet 17 having a rectangular cross section, and has a dimension capable of being filled with resin for fixing the magnet 17 around the magnet hole C.
The magnet holes C having a rectangular cross section are paired at an angle of 120 to 150 degrees, and are equally arranged around the shaft hole A in an axially symmetrical manner. That is, one jumping magnet hole C formed in the outer peripheral region of the shaft hole A is inclined in the clockwise direction at the same angle (θ) with respect to the radial line, and the other one jumping magnet hole C is Inclined in the counterclockwise direction at the same angle (θ) with respect to the radial line. The number and shape of the magnet holes are not limited to this.

In this embodiment, the rotor core 12 is mounted on a rectangular mounting table 13 in plan view with a shaft 23 inserted into the shaft hole A in the center, and rotates from a horizontal state to a vertical state. The magnet 17 is inserted into the magnet hole C, and then returned to the horizontal state again and transported to an area where the next process (magnet resin sealing process) is performed.

As shown in FIGS. 2, 3 (A), and (B), the shaft 23 corresponds to the pair of linear protrusions 21 of the rotor core 12 along the axial direction at a position of 180 degrees on the outer periphery. The mounting table 13 carries the rotor core 12 in a state where the shaft 23 is inserted into the shaft hole A and the rotor core 12 is positioned. The shaft 23 is formed longer than the height of the rotor core 12 (length in the axial direction) so that the front side protrudes from the shaft hole A in a state where the rotor core 12 is fitted to the base of the shaft 23. . In addition, each key groove 31 is gradually formed wider toward the tip on the front side of the shaft 23, and the shaft 23 can be easily fitted into the shaft hole A.

As shown in FIGS. 1, 4, and 5, the mounting table 13 is held and temporarily fixed in a horizontal state on the path on which the mounting table 13 on which the rotor core 12 is mounted is transported. A holding table 25 to be released is arranged. The gripping table 25 has hook-shaped members 33 and 34 that hold the rectangular mounting table 13 from both sides, and pushes up the mounting table 13 to be gripped from the bottom and holds it firmly with the hook-shaped members 33 and 34. A mechanism (push-up member) 35 is provided.

A pair of arms 40 is attached to the bottom of the gripping base 25, and each arm 40 is fixed to a rotating shaft 42 whose base is rotatably provided on the base member 32 via a bearing base (not shown). . The rotating shaft 42 is connected to the output shaft of the first motor 41 with a speed reducer. The rotation shaft 42 rotates 90 degrees clockwise (+90 degrees) and 90 degrees counterclockwise (-90 degrees) in FIG. 1 with respect to the arm 40 in a vertical state at 0 degrees. To do. Therefore, the mounting table 13 on which the rotor core 12 is placed can be rotated from the horizontal state to be in a vertical state from side to side. The positions of the horizontally disposed rotor cores 12 when the rotation shaft 42 is rotated to +90 degrees and −90 degrees are defined as a +90 degree position and a −90 degree position, respectively.
In addition, the sorting mechanism 14 includes the gripping base 25, the arm 40 that connects the gripping base 25 and the rotation shaft 42, and the first motor 41 that rotates the rotation shaft 42 within a range of 180 degrees. .

Magnet insertion units 38 and 39 having dummy members 15 and 16 are provided on the right and left sides of the distribution mechanism 14 in the center, respectively. The dummy members 15 and 16 are disposed opposite to the rotor core 12 disposed at the +90 degree position and the −90 degree position, respectively, and are normally disposed with a gap from the rotor core 12.
Further, the magnet insertion units 38 and 39 are respectively a push insertion means 59 for temporarily placing the magnets 17 into the dummy members 15 and 16 and a push insertion means 59 from the magnet storage magazine 57 provided in the magnet insertion units 38 and 39. And the delivery mechanism 60 for delivering the magnet 17 to the rotor core 12, and the magnet 17 temporarily arranged on the dummy members 15 and 16 is inserted into the rotor core 12.
In addition, since the magnet insertion units 38 and 39 have substantially the same configuration with the X-axis direction being opposite (symmetrical), the magnet insertion unit 38 will be described below. The same components as those of the magnet insertion unit 38 are denoted by the same reference numerals, and detailed description thereof is omitted.

The magnet insertion unit 38 is provided with a dummy member holder 44, and the dummy member 15 arranged horizontally (with the axis centered horizontally) is rotatably attached to the dummy member holder 44. The dummy member holder 44 is movably mounted on a pair of guide rails 46 arranged in the axial direction of the dummy member 15 on the upper part of the fixed plate 45 arranged horizontally below. Further, since the cylinder 51 fixed to the fixing plate 45 is attached to the dummy member holder 44 along the guide rail 46, the dummy member 15 is moved together with the dummy member holder 44 by the expansion and contraction operation of the cylinder 51. Can move horizontally along.

As shown in FIGS. 1 and 6 to 8, the dummy member 15 is fixed to the outside of the dummy member holder 44 of the magnet insertion unit 38 (that is, in the direction away from the sorting mechanism 14 and in the positive direction of the X axis). A rotating ring 47 having grooves formed at regular intervals on the outer periphery is arranged in the same manner as the dummy member 15.
A roller pinion 50 that meshes with a groove formed in the outer peripheral portion of the rotating ring 47 in a state where the dummy member 15 is in the retracted position farthest from the rotor core 12 in a plan view is disposed below the rotating ring 47. ing.

The roller pinion 50 is rotationally driven by a second motor 52 attached to the roller pinion 50 to rotate the rotating ring 47 and the dummy member 15 on the same axis, and the dummy member 15 outputs the output of the second motor 52. -Rotates so that one magnet hole D in the same direction moves by one turn (in this embodiment, the dummy member 15 rotates 45 degrees). The second motor 52 is fixed to the fixed plate 45 via the fixing member 53.

The forward / backward moving means 56 for moving the dummy member 15 forward / backward includes the dummy member holder 44 described above and the cylinder 51 for moving the dummy member holder 44 along the guide rail 46.
As shown in FIGS. 4 and 6, the terminal end of the delivery mechanism 60 that conveys the magnet 17 that is arranged right outside the X-axis positive direction of the dummy member 15 in the retracted position and orthogonal to the advancing / retreating direction of the dummy member 15. The part is located. A long magnet storage magazine 57 for storing a plurality of magnets 17 is erected at the start end of the delivery mechanism 60, and the magnets 17 (a predetermined number of a plurality of magnets 17 are stored in the magnet storage magazine 57). A magnet moving shaft 58 is provided for pushing the magnet pieces 19) one by one onto the upper part of the magnet storage magazine 57.

Above the magnet storage magazine 57, the delivery mechanism 60 described above for delivering the magnet 17 pushed out above the magnet storage magazine 57 to the push-in insertion means 59 disposed in the vicinity of the dummy member 15 in the retracted position is shown. The support member is not supported in the horizontal direction. The delivery mechanism 60 has a pair of first and second magnet conveying means 61 and 62 arranged vertically.
As shown in FIGS. 6 and 7, the first and second magnet conveying means 61, 62 are arranged in the vicinity of the dummy member 15 in the retracted position and are output shafts in the same direction as the rotation axis of the dummy member 15. The first and second drive motors 63 and 64 are respectively provided, and the output shafts of the first and second drive motors 63 and 64 are driven by the first and second drive motors 63 and 64, respectively. The rotating first and second toothed pulleys 65 and 66 are connected to each other.

In addition, the first and second magnet conveying means 61 and 62 are respectively provided with first and second magnets located on the opposite side to the first and second toothed pulleys 65 and 66 (the start end side of the delivery mechanism 60). Pulleys 67 and 68 with auxiliary teeth are provided, respectively. The first toothed pulley 65, the first auxiliary toothed pulley 67, the second toothed pulley 66, and the second auxiliary toothed pulley 68 have first and second toothed belts 71, 72, respectively. Since it is passed over, the first and second auxiliary toothed pulleys 67 and 68 rotate in synchronization with the first and second toothed pulleys 65 and 66, respectively.

A front bearing member 73 and a rear bearing member 74 are disposed at a terminal end portion and a start end portion of the delivery mechanism 60, respectively. The first and second magnet conveying means 61 and 62 include the front bearing member 73 and the rear bearing member, respectively. The first and second guide rods 75 and 76 are rotatably mounted on the roller 74 and horizontally disposed. The first and second guide rods 75 and 76 are rotated by driving first and second position adjusting motors 77 and 78 respectively connected to the first and second guide rods 75 and 76.

The first and second guide rods 75 and 76 are attached with first and second magnet transport chucks 85 and 86 that are movable along the first and second guide rods 75 and 76, respectively. The second magnet transport chucks 85 and 86 include first and second gripping members 83 and 84 that grip the magnet 17, respectively.
The first and second magnet conveying chucks 85 and 86 are fixed to a part of the first and second toothed belts 71 and 72, respectively, and the first and second toothed belts 71 and 72 are rotated. By movement, each moves along the first guide rod 75 (second guide rod 76).
The first and second magnet transport chucks 85 and 86 raise or lower the first and second gripping members 83 and 84, respectively, by the rotation of the first and second guide rods 75 and 76, respectively ( Movement in the Z-axis direction).

Between the magnet storage magazine 57 and the first position adjustment motor 77 in a plan view, a measuring instrument 90 is placed on a support base 89, and the measuring instrument 90 is a horizontal measuring instrument provided in the upper part. The weight of the magnet 17 placed on the plate 91 can be measured.
The first magnet transport chuck 85 can move between the magnet storage magazine 57 and the measuring plate 91, and lowers the first gripping member 83 to grip and grip the magnet 17 pushed out above the magnet storage magazine 57. The magnet 17 can be placed on the weighing plate 91.

The second magnet transport chuck 86 can move between the measuring plate 91 and the push-in insertion means 59, and the second gripping member 84 moves the magnet 17 placed on the measuring plate 91 by the first magnet transport chuck 85. The magnet 17 is gripped and conveyed (delivered) to the push-in insertion means 59.

As shown in FIGS. 4 and 5, the push-in insertion means 59 is in a vertical (Z-axis direction) state in which the magnet holders 92 and 93 that form a pair into which the magnet 17 can be inserted from above and the magnet holders 92 and 93 are synchronized. A third motor 100 that rotates in a horizontal (X-axis direction) state, and a horizontal (X-axis direction) movable magnet supply shaft 101 that pushes the magnet 17 inserted in the magnet holders 92 and 93 into the magnet hole D; have.
The magnet holder 92 (the same applies to the magnet holder 93) has a pair of long magnet holding members 96 arranged in opposition to each other. A magnet mounting groove 98 for mounting 17 is formed. The magnet holder 92 is in a vertical state when the magnet holding member 96 is in a vertical state, and the magnet holder 92 is in a horizontal state when the magnet holding member 96 is in a horizontal state (X-axis direction).

Here, the tip of the magnet mounting groove 98 of the magnet holding member 96 (the upper portion of the magnet mounting groove 98 in the vertical state) is opened and the base is not opened, so a pair of magnet holding members As for 96, the magnet 17 can be inserted from the front part in the vertical state, and the inserted magnet 17 does not fall off from the base side of the magnet holding member 96.

When the magnet holding member 96 of the magnet holders 92 and 93 is in the vertical state, the second magnet transport chuck 86 is disposed directly above the magnet holder 92 or the magnet holder 93 (more accurately, the magnet 17 in plan view). From the position of the magnet holder 92 or the magnet holder 93 that forms a pair of the magnet holder 93), and the magnet 17 is moved between the magnet holder 92 or the magnet holder 93 that forms a pair of the magnet holder 93. Can be inserted. The magnet 17 is gripped by the second gripping member 84 of the second magnet transport chuck 86 with a plurality of magnet pieces 19 stacked in the vertical direction.

The axial centers of all the magnet holes D of the dummy member 15 are arranged in the horizontal horizontal direction (X-axis direction), and are inserted between the pair of magnet holding parts 96 when the magnet holding part 96 is in the horizontal state. The magnet 17 is arranged such that its axis coincides with one of the plurality of magnet holes D. In addition, when the magnet holding | maintenance part 96 is a horizontal state, the several magnet piece 19 will be in the state arrange | positioned along with the axial center direction of the magnet hole D. As shown in FIG.

When the magnet holding part 96 is in a horizontal state, the push-in inserting means 59 moves the magnet supply shaft 101 horizontally along the axis of the magnet hole D, presses the magnet 17 and inserts it into the magnet hole D (temporary arrangement). be able to. The push-in inserting means 59 has means for advancing / retreating the magnet supply shaft 101 (not shown, consisting of a cylinder, a motor, etc.), and the magnet supply shaft 101 is a pair of magnets provided in the magnet holders 92 and 93. It moves toward the magnet hole D only when the holding member 96 is in a horizontal state. Moreover, the magnet 17 will be in the state by which the several magnet piece 19 was arrange | positioned along the axial center direction of the magnet hole D, and was temporarily arrange | positioned.

Since the magnet hole D is provided with a guide portion that opens in a tapered shape toward the entrance side on the entrance side where the magnet 17 is inserted, the magnet hole formed by the magnet supply shaft 101 of the push-in insertion means 59 is provided. The magnet 17 can be smoothly inserted into the D, and the magnet 17 is temporarily placed in the magnet hole D in a state where the dummy members 15 and 16 whose axis center is in the X-axis direction are laterally arranged. Therefore, the magnet 17 temporarily disposed in the magnet hole D does not fall out of the magnet hole D.

When it is confirmed that the weight of the magnet 17 placed on the weighing plate 91 is within a predetermined range set in advance, the second magnet transport chuck 86 moves the magnet 17 to the magnet holder 92 or the magnet holder. However, if the weight of the magnet 17 placed on the weighing plate 91 is not within a predetermined range, the magnet 17 is not transported to the magnet holder 92 or the magnet holder 93 and is not shown. Since it is transported to a specific location removed from the weighing plate 91 by the transport means and away from the fixed plate 45, it is possible to prevent the magnets 17 and the like less than a predetermined weight from being temporarily placed in the magnet hole D due to chipping or the like.

As shown in FIGS. 1 and 8, when the dummy member 15 moves from the retracted position toward the rotor core 12 and the distance from the rotor core 12 decreases, the shaft protruding from the shaft hole A of the rotor core 12. The tip of 23 is inserted into the shaft hole B of the dummy member 15, and the dummy member 15 contacts the rotor core 12 in a state where the dummy member holder 44 is closest to the rotor core 12 in plan view. (Hereinafter, the position of the dummy member 15 is also referred to as “advance position”).

When the shaft 23 is fitted into the shaft hole B, the linear protrusions 26 are fitted into the corresponding key grooves 31 respectively.
And in the state which the dummy member 15 contact | abutted to the rotor core 12, the axial center of each magnet hole C of the rotor core 12 mounted in the mounting base 13 becomes the same position as the axial center of each magnet hole D, The magnet hole C coincides with each magnet hole D.

Above the dummy member 15 in the retracted position, the same number of elongated members 102 as the magnet holes D are horizontally arranged along the axial direction (X-axis direction) of the magnet holes D. The long member 102 is attached to a driving means (not shown) having a cylinder that expands and contracts in the vertical direction (Z-axis direction), a cylinder that expands and contracts in the axial direction of the magnet hole D, and a guide member that guides the expansion and contraction. , Vertical movement and horizontal movement along the axis of the magnet hole D can be performed.
The cross section of the long member 102 is smaller than the outer dimension of the cross section of the magnet hole D, and each long member 102 is disposed at a position corresponding to each magnet hole D when in the lowest position. .

When the dummy member 15 is in contact with the rotor core 12 (in the forward position), the long member 102 moves horizontally toward the dummy member 15 in the state where it is disposed at the lowest position, and at the front part. The magnet 17 temporarily placed in the magnet hole D of the dummy member 15 can be pressed to insert the magnet 17 into the magnet hole C of the rotor core 12.
Further, the magnet hole D of the dummy member 15 is formed so that the cross-sectional area gradually decreases from the inlet side toward the outlet side, and the cross-sectional area becomes smaller than the outer dimension of the magnet hole C on the outlet side. The scale member 102 can smoothly move (insert) the magnet 17 from the magnet hole D to the magnet hole C.

Further, the movement of the magnet 17 is performed in a state where the rotor core 12 and the dummy member 15 are arranged horizontally, that is, in a state where the magnet hole C and the magnet hole D are arranged horizontally (arrangement in the X-axis direction). The magnet 17 is moved in a stable state, and the magnet 17 inserted (attached) into the magnet hole C can be prevented from dropping out of the magnet hole C.

Then, the manufacturing method of the rotor core which concerns on one embodiment of this invention is demonstrated in detail.
The rotor core manufacturing method using the rotor core manufacturing apparatus 10 includes 1) a step of temporarily arranging the magnets 17 in the magnet holes D of the dummy members 15 and 16, and 2) each magnet hole C of the rotor core 12. And a step of matching the magnet holes D of the dummy member 15 with each other, and 3) a magnet 17 inserted (temporarily arranged) in the magnet holes D of the dummy members 15 and 16 is pushed out by the long member 102 and the magnet of the rotor core 12 And inserting into the hole C.

The step of temporarily placing the magnet 17 in the magnet hole D of the dummy member 15 (the same applies to the dummy member 16) is a state where the magnet 17 is first delivered from the magnet storage magazine 57 and inserted into the magnet holder 93 by the second magnet transport chuck 86. The magnet 17 is pressed by the magnet supply shaft 101 and inserted into one of the plurality of magnet holes D (the magnet hole D 1 inclined counterclockwise at an angle θ with respect to the radial line of the dummy member 15). (Step 1). Next, the dummy member 15 is rotated so that the two magnet holes D are moved by the rotation of the roller pinion 50, and the magnet holes inclined at the same angle as the magnet holes D into which the magnets 17 are inserted in step 1. D is arranged at a position where the magnet 17 can be inserted by the magnet holder 93, and another magnet 17 delivered from the magnet storage magazine 57 is inserted into the magnet holder 93 in which the magnet holding member 96 is in a vertical state (step) 2).

Then, the magnet 17 inserted in the magnet holder 93 with the magnet holding member 96 in a horizontal state is inserted into the next magnet hole D by the magnet supply shuff 101 (step 3). Thereafter, steps 2 and 3 are repeated until the insertion of the magnets 17 into all the magnet holes D inclined at the same angle as the magnet holes D into which the magnets 17 are inserted in step 1 is completed (step 4). When step 4 is completed, the dummy member 15 has a magnet 17 inserted into all the magnet holes D arranged in a single jump, and a magnet hole D paired with the magnet hole D into which the magnet 17 is inserted. In other words, the magnet 17 is not inserted into the magnet hole D 1 that is inclined in the clockwise direction at an angle θ with respect to the radial line of the dummy member 15, and the plurality of magnets 17 are not inserted into the magnet hole D. One is in a state in which the magnet 17 can be inserted by the magnet holder 92.

Then, the magnet 17 delivered from the magnet storage magazine 57 is inserted into the magnet holder 92 in which the second magnet transport chuck 86 puts the magnet holding member 96 in a vertical state. The magnet 17 inserted in the horizontal magnet holder 92 is pressed to insert the magnet 17 into the magnet hole D (step 5). Next, the dummy member 15 is rotated so that the two magnet holes D are moved by the rotation of the roller pinion 50, and the magnet holes inclined at the same angle as the magnet holes D into which the magnets 17 are inserted in step 5 are arranged. D is arranged at a position where the magnet 17 can be inserted by the magnet holder 92, and another magnet 17 delivered from the magnet storage magazine 57 is inserted into the magnet holder 92 in which the magnet holding member 96 is in a vertical state (step) 6).

Then, the magnet 17 inserted in the magnet holder 92 with the magnet holding member 96 in a horizontal state is inserted into the next magnet hole D (step 7). Thereafter, steps 6 and 7 are repeated until the insertion of the magnet 17 into all the magnet holes D inclined at the same angle as the magnet hole D into which the magnet 17 is inserted in step 5 is completed (step 8). When step 8 is completed, the magnets 17 are inserted into all the magnet holes D of the dummy member 15, and the process of temporarily arranging the magnets 17 in the magnet holes D is completed.
The step of temporarily arranging the magnet 17 in the magnet hole D is performed in a state where the dummy member 15 is in the retracted position.

Next, in the step of matching the magnet holes C of the rotor core 12 with the magnet holes D of the dummy members 15 and 16, the advancing / retreating means 56 moves the rotor core 12 to the +90 degree position with respect to the dummy member 15, With respect to the dummy member 16, the dummy members 15 and 16 in a state where the magnets 17 are inserted in all the magnet holes D are moved from the retracted position to the advanced position in a state where the dummy members 16 are horizontally disposed at −90 degrees. And the part which protruded from the shaft hole A of the shaft 23 in the arrangement | positioning in which the linear protrusion 26 of the dummy members 15 and 16 corresponds to the keyway 31 of the shaft 23 is inserted in the shaft hole B of the dummy members 15 and 16, and rotates. The core 12 and the dummy members 15 and 16 are in contact with each other, and the magnet holes C of the rotor core 12 are aligned with the magnet holes D of the dummy members 15 and 16.

Thereafter, in the step of pushing the magnet 17 temporarily arranged in the magnet hole D of the dummy members 15 and 16 by the long member 102 and inserting it into the magnet hole C of the rotor core 12, each magnet hole C and each magnet hole D are formed. In the state of being matched, each elongate member 102 is moved horizontally toward each magnet hole D, the magnet 17 temporarily arranged in each magnet hole D is pressed and moved to the magnet hole C, and It is assumed that the magnet 17 is inserted in all.

Here, in the step of temporarily arranging the magnet 17 in the magnet hole D of the dummy member 15, the magnet hole D in which the magnet 17 of the dummy member 16 is temporarily arranged is changed to the magnet hole C of the rotor core 12 at a position of −90 degrees. Since it can be performed at the same time as the matching step and the step of inserting the magnet 17 into the magnet hole C of the rotor core 12 located at −90 degrees from the magnet hole D of the dummy member 16, the manufacture of the rotor core 12 is efficient. Thus, the productivity of the rotor core 12 can be increased.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, instead of providing a keyway on the shaft of the mounting table, a linear protrusion is provided, and a keyway corresponding to the linear protrusion is formed in the rotor core and the dummy member, respectively, so that the rotor core and the dummy member are positioned. The magnet holes C of the rotor core may be matched with the magnet holes D of the rotor core.

Further, when the dummy member is arranged at the forward movement position, the magnet is moved from the magnet hole D of the dummy member to the magnet hole C of the rotor core in a closely arranged state without placing the dummy member in contact with the rotor iron core. You can also
Furthermore, without temporarily arranging magnets in all the magnet holes D of the dummy part, each magnet hole C of the rotor core and each of the rotor cores are temporarily arranged in a part of the magnet holes D. The magnet hole D may be matched, the magnet may be moved from the magnet hole D to the magnet hole C, and the magnet may be inserted into the magnet hole C into which the magnet has not been inserted in a separate process.

A: Shaft hole A, B: Shaft hole B, C: Magnet hole C, D: Magnet hole D, 10: Rotor core manufacturing device, 12: Rotor core, 13: Mounting table, 14: Sorting mechanism, 15 , 16: dummy member, 17: magnet, 19: magnet piece, 21: linear protrusion, 23: shaft, 25: gripping base, 26: linear protrusion, 31: keyway, 32: base member, 33, 34: Saddle-shaped member, 35: push-up member, 38, 39: magnet insertion unit, 40: arm, 41: first motor, 42: rotating shaft, 44: dummy member holder, 45: fixing plate, 46: guide rail, 47: rotating ring, 50: roller pinion, 51: cylinder, 52: second motor, 53: fixed member, 56: forward / backward moving means, 57: magnet storage magazine, 58: magnet moving shaft, 59: push-in inserting means, 60: Delivery mechanism, 61: First Magnet conveying means, 62: second magnet conveying means, 63: first driving motor, 64: second driving motor, 65: first toothed pulley, 66: second toothed pulley, 67: first 1: pulley with auxiliary teeth, 68: second pulley with auxiliary teeth, 71: first toothed belt, 72: second toothed belt, 73: front bearing member, 74: rear bearing member, 75: first 1 guide rod, 76: second guide rod, 77: first position adjustment motor, 78: second position adjustment motor, 83: first gripping member, 84: second gripping member, 85: first 1: magnet transport chuck 86: second magnet transport chuck 89: support base 90: weighing machine 91: weighing plate 92 92 93 magnet holder 96 magnet holding member 98 magnet mounting groove 100 : Third motor, 101: magnet supply shaft, 102: elongate member

Claims (5)

A method for manufacturing a rotor core in which a plurality of magnets are inserted into the magnet hole C of a rotor core having a magnet hole C into which a magnet is inserted.
Temporarily arranging the magnets in the magnet holes D of a dummy member having magnet holes D formed at the same positions as the plurality of magnet holes C in the outer peripheral region around the shaft hole B;
Matching each magnet hole C of the rotor core with each magnet hole D of the dummy member;
And a step of extruding the magnet temporarily disposed in the magnet hole D of the dummy member and inserting the magnet into the magnet hole C of the rotor core. 2. The method for manufacturing a rotor core according to claim 1, wherein the matching of each magnet hole C of the rotor core and each magnet hole D of the dummy member is performed by inserting a shaft into the shaft hole A of the rotor core. In this state, the shaft protruding from the shaft hole A is inserted into the shaft hole B of the dummy member, and the method for manufacturing a rotor core is performed. A rotor core manufacturing apparatus for inserting a magnet into the magnet hole C of a rotor core having a magnet hole C into which a plurality of outer peripheral regions are provided around a shaft hole A and having a magnet inserted therein.
A sorting mechanism for rotating the mounting table on which the rotor core is placed in a state where the shaft is inserted into the shaft hole A and the rotor core is positioned;
A dummy that is provided opposite to the rotor core that has been rotated and has a shaft hole B that has the same shape as the shaft hole A, and a magnet hole D that is formed at the same position as the plurality of magnet holes C. Members,
The dummy member is moved forward toward the facing rotor core, the shaft hole B is inserted into the shaft of the rotationally moved mounting table, and is brought into contact with or closely arranged to the rotor core, Forward / backward moving means for aligning the magnet hole D of the dummy member with the magnet hole C of the rotor core mounted on the rotor core;
An apparatus for manufacturing a rotor core, comprising: a long member that pushes the magnet in the magnet hole D into the magnet hole C of the rotor core. 4. The rotor core manufacturing apparatus according to claim 3, wherein when the dummy member is in the retracted position, the magnet hole D at a predetermined position of the dummy member is delivered in advance from a magnet storage magazine at another position. An apparatus for manufacturing a rotor core, further comprising push-in insertion means for inserting a magnet. 5. The apparatus for manufacturing a rotor core according to claim 4, wherein the magnet is composed of a plurality of magnet pieces, and the weighing means for measuring the weight of the plurality of magnet pieces taken out from the magnet storage magazine includes the magnet storage magazine. And an apparatus for manufacturing a rotor core, which is provided between the push-in insertion means.