JP2019187118A - Apparatus and method for manufacturing rotor core - Google Patents

Abstract

To provide an apparatus and a method for manufacturing a rotor core in which a hollow is difficult to be generated in a resin when a cull is separated.SOLUTION: An apparatus that stores a magnet 14 in a magnet storage hole 13 formed on a core body 11, fills the magnet storage hole 13 storing the magnet 14 with a resin to cure the resin, and fixes the magnet 14 to the core body 11, includes a fixing die 2 on which the core body 11 in which the magnet 14 is stored in the magnet storage hole 13 is mounted; a movable die 3 which is provided on the core body 11 and has a resin inflow port 33; and a cull plate 4 which is arranged between the core body 11 and the movable die 3, guides a resin flowing in from the resin inflow part 33 to the magnet storage hole 13, and is formed with a filling pot 41 holding a cull 5 that is a cured product of a resin, in which the cull plate 4 has cull tightening means 6 which tightens the end of the core body 11 side of the cull 5 and holds the core body in a compressed state.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a manufacturing apparatus and a manufacturing method for a rotor core used in a motor.

  A rotor core used in a motor is known in which a magnet is accommodated in a magnet accommodation hole formed in the core body, a resin is filled in the magnet accommodation hole containing the magnet and cured, and the magnet is fixed to the core body. Yes. When manufacturing such a rotor core, it is necessary to harden the resin filled in the magnet accommodation hole and then remove an unnecessary cured resin called a cal formed outside the magnet accommodation hole. is there.

  As a conventional rotor core manufacturing apparatus, a plate-like member called a cull plate is disposed between a mold and a core body, and the cull plate is configured to hold a cull (for example, a patent) Reference 1). By providing the cull plate, if the cull plate is removed from the core body after the resin is cured, a plurality of culls are separated from the core body together with the cull plate, and the process of separating the cull becomes easy.

Japanese Patent No. 5748465

  By the way, when the cull plate is removed from the core main body and the cull is separated from the resin cured in the magnet accommodation hole, the resin cured in the magnet accommodation hole may be wrinkled (concave). Resin dripping results in poor appearance and is difficult to repair after molding. For this reason, it is desirable to prevent the resin from dripping during the separation of the cal.

  In Patent Document 1, the resin is prevented from curling by generating stress concentration at the boundary between the resin hardened in the magnet housing hole and the cull. However, even in this case, resin curling cannot be completely suppressed, and improvement is desired.

  Accordingly, an object of the present invention is to provide a rotor core manufacturing apparatus and manufacturing method in which resin does not easily sag during separation of cals.

  In order to solve the above-described problems, the present invention provides a method for accommodating a magnet in a magnet housing hole formed in a core body, filling a resin in the magnet housing hole containing the magnet, and curing the core. An apparatus for fixing the magnet to a main body, the fixed mold on which the core main body storing the magnet in the magnet receiving hole is placed, and a movable mold provided on the core main body and having a resin inlet The calf is disposed between the core main body and the movable mold, and is formed with a filling pot for guiding the resin flowing in from the resin inflow port to the magnet housing hole and holding the curl that is a cured product of the resin. A rotor core manufacturing apparatus including a cull clamping means that clamps an end of the cull on the core body side and holds the cull in a compressed state.

  In addition, the present invention aims to solve the above-described problems, by accommodating a magnet in a magnet accommodation hole formed in the core body, filling the magnet accommodation hole containing the magnet, and curing the resin, A method of fixing the magnet to the core body, wherein the core body containing the magnet is placed in a stationary mold and a movable mold having a resin inlet is provided on the core body. In addition, a filling pot is formed between the core body and the movable mold to guide the resin flowing from the resin inlet into the magnet housing hole and to hold the curl that is a cured product of the resin after the resin is cured. A preparatory step for disposing the culplate, and the resin supplied from the resin inflow port is filled by flowing the resin into the magnet accommodation hole through the filling pot, and the resin filled in the magnet accommodation hole is cured. Make And a cull separation step of separating the cull from the core body by detaching the movable mold and then removing the cull plate from the core body. The end portion of the core body side of the core body is tightened and held in a compressed state, and in the cull separation step, the end portion of the core body side of the cull is tightened and compressed by the cull tightening means. A rotor core manufacturing method is provided in which the cull is separated from the core body in a state.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus and manufacturing method of a rotor core which are hard to produce a resin at the time of separation | separation of a cal can be provided.

It is a figure which shows the rotor core manufactured with the manufacturing apparatus of the rotor core which concerns on one embodiment of this invention, (a) is a perspective view, (b) is sectional drawing which shows the cross section containing a central axis. It is sectional drawing which shows the manufacturing apparatus of the rotor core which concerns on one embodiment of this invention. It is a figure which shows a cull plate, (a) is a top view, (b) is the top view which expanded a part of division member. (A) is a top view of the division | segmentation member at the time of releasing a spacer, (b) is sectional drawing of the cull plate after spacer removal. (A) is a top view of the division member at the time of attaching a holding member to a lever part, (b) is the CC sectional view taken on the line, (c) is a perspective view of a holding member. It is a flowchart which shows the procedure of the manufacturing method of the rotor core which concerns on this Embodiment. (A), (b) is explanatory drawing explaining a resin sealing process. (A), (b) is explanatory drawing explaining a cull separation process.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(Description of rotor core)
1A and 1B are views showing a rotor core manufactured by the rotor core manufacturing apparatus according to the present embodiment, wherein FIG. 1A is a perspective view and FIG. 1B is a cross-sectional view showing a cross section including a central axis. As shown in FIGS. 1A and 1B, the rotor core 10 includes a core body 11, a magnet 14 accommodated in a magnet accommodation hole 13 formed in the core body 11, and a magnet accommodation hole 13 that is filled and cured. Resin 15.

  The core body 11 is a laminated body in which a plurality of core pieces 12 made of electromagnetic steel plates are laminated. The core body 11 is formed in a substantially cylindrical shape as a whole, and a central hole 11a is formed in the axial center portion so as to penetrate the core body 11 in the axial direction. In addition, the code | symbol C in FIG.1 (a), (b) represents the center axis line of the core main body 11. FIG. A key portion 11 b is formed on the inner peripheral surface of the core body 11 so as to protrude radially inward from the facing position. The key part 11b is used for positioning with respect to the fixed mold 2 described later.

  The magnet accommodation hole 13 is formed on the outer peripheral side of the center hole 11a and is formed so as to penetrate the core body 11 in the axial direction. A plurality of magnet housing holes 13 are formed in the core body 11 at intervals in the circumferential direction. The magnet accommodation hole 13 is formed in a long hole shape, and the long axis direction is formed so as to be inclined with respect to the radial direction of the core body 11. More specifically, the magnet housing hole 13 whose major axis direction is inclined at a predetermined angle with respect to the radial direction of the core body 11, and the magnet whose major axis direction is inclined at a predetermined angle in the opposite direction with respect to the radial direction of the core body 11. The receiving holes 13 are alternately formed in the circumferential direction of the core body 11 so as to be separated from each other.

  Each magnet accommodation hole 13 accommodates a plate-like magnet 14 extending along the axial direction of the core body 11. The magnet housing hole 13 is filled with a resin 15, and the magnet 14 is fixed to the core body 11 by the resin 15. As the resin 15, a thermosetting resin such as an epoxy resin can be used.

  A cooling hole 11 c through which a cooling medium for cooling the magnet 14 is circulated is formed on the outer peripheral side of the center hole 11 a of the core body 11 and on the inner peripheral side of the magnet housing hole 13. A plurality of cooling holes 11 c are formed in the core body 11 so as to be spaced apart from each other in the circumferential direction. Each cooling hole 11 c is formed so as to penetrate the core body 11 in the axial direction, and is formed in an arc shape curved along the circumferential direction of the core body 11. Although not shown, each cooling hole 11c has a communicating portion that branches in the core body 11 and communicates with the central hole 11a.

(Description of rotor core manufacturing equipment)
FIG. 2 is a cross-sectional view showing the rotor core manufacturing apparatus according to the present embodiment. As shown in FIG. 2, the rotor core manufacturing apparatus 1 accommodates a magnet 14 in a magnet accommodation hole 13 formed in the core body 11, fills the magnet accommodation hole 13 in which the magnet 14 is accommodated, and cures the resin. This is a device for fixing the magnet 14 to the core body 11. The rotor core manufacturing apparatus 1 includes a fixed mold 2, a movable mold 3, and a cull plate 4.

  The fixed mold 2 is configured such that the core main body 11 in which the magnet 14 is accommodated in the magnet accommodating hole 13 is placed. The fixed mold main body 21, the support member 22 fixed to the upper surface of the fixed mold main body 21, and the support member And a spacer 23 disposed on the upper surface of the substrate 22.

  The support member 22 protrudes upward from the center portion of the base portion 22a, and has a plate-like base portion 22a fixed to the upper surface of the fixed main body 21 by bolts (not shown), and is inserted into the center hole 11a of the core body 11. A substantially cylindrical post portion 22b. Although not shown, a pair of key grooves into which the key portion 11b of the core body 11 is inserted are formed on the outer peripheral surface of the post portion 22b, and the key portion 11b is inserted into the key groove to be fixed. The core body 11 is positioned with respect to the mold 2.

  The spacer 23 is formed in a plate shape, and an insertion hole 23a through which the post portion 22b is inserted is formed at the center thereof. Although not shown, the spacer 23 has a pair of restricting protrusions that protrude into the insertion hole 23a and are inserted into the key groove of the post portion 22b. By inserting the restricting protrusions into the key groove, a support member is provided. The spacer 23 is positioned relative to the core body 11 and the core body 11. The core body 11 is placed on the upper surface of the spacer 23, and the lower surface of the core body 11 and the upper surface of the spacer 23 are in contact with each other.

  A pin hole 23b that penetrates the spacer 23 in the plate thickness direction is formed at a position corresponding to the magnet housing hole 13 of the core body 11 in the spacer 23, and a restriction pin 23c is formed in the pin hole 23b from below. Inserted and fixed. The upper end portion of the restriction pin 23c protrudes upward from the upper surface of the spacer 23, protrudes into the magnet accommodation hole 13, and supports the magnet 14 accommodated in the magnet accommodation hole 13 from below.

  The movable mold 3 is provided on the core body 11 placed on the fixed mold 2 so as to be detachable from the fixed mold 2. The movable mold 3 has a movable mold body 31 and a plate portion 32 fixed to the lower surface of the movable mold body 31. The plate portion 32 has an outer shape larger than that of the cull plate 4. The movable mold 3 has a plurality of resin inlets 33 for allowing the resin for sealing the magnet accommodation holes 13 to flow in. Each resin inlet 33 is formed so as to penetrate through the movable main body 31 and the plate portion 32, and is formed in a circular shape in plan view.

(Description of Cull Plate 4)
3A and 3B are diagrams showing the cull plate 4, wherein FIG. 3A is a plan view and FIG. 3B is an enlarged plan view of a part of the dividing member. In FIG. 3A, the position of the magnet accommodation hole 13 when the cull plate 4 is overlaid on the core body 11 is indicated by a broken line. FIG. 2 is a cross-sectional view taken along the line AA in FIG. As shown in FIGS. 2 and 3, the cull plate 4 is formed in a plate shape and is disposed between the core body 11 and the movable mold 3 (plate portion 32). The lower surface of the cull plate 4 is in contact with the upper surface of the core body 11, and the upper surface of the cull plate 4 is in contact with the lower surface of the plate portion 32.

  The cull plate 4 is formed with a plurality of filling pots 41 for guiding the resin flowing from the resin inlet 33 of the movable mold 3 to the magnet accommodation hole 13. In the present embodiment, one filling pot 41 is formed for every two magnet accommodation holes 13 adjacent in the circumferential direction. Although the details will be described later, the filling pot 41 also serves to hold a cal which is a cured product of an unnecessary resin after the resin is cured.

  The filling pot 41 is formed in a circular shape in plan view, opens on the upper surface, communicates with the resin inlet 33 of the movable mold 3, penetrates the bottom wall of the connection portion 41 a, and accommodates the connection portion 41 a and the magnet. And two nozzle portions 41 b communicating with the hole 13. The nozzle portion 41 b is formed in a rectangular shape having a pair of long sides parallel to the long axis direction of the magnet housing hole 13. Moreover, the nozzle part 41b is formed in the taper shape from which an opening becomes narrow as it goes downward (as the core main body 11 side). As a result, after the resin is cured, the connecting portion that connects the resin 15 sealing the magnet accommodation hole 13 and the unnecessary cull becomes thin, and separation of the cull from the resin 15 becomes easy.

  In the rotor core manufacturing apparatus 1 according to the present embodiment, the cull plate 4 has a cull clamping means 6 that clamps an end of the cull on the core body 11 side (connection portion with the resin 15) and holds it in a compressed state. is doing.

  In the present embodiment, the cull plate 4 includes a plate-shaped plate body 42 and a plate-shaped dividing member 43 that is arranged on the core body 11 side (lower side) of the plate body 42. . The cull plate 4 is configured by overlapping a plate body 42 and a dividing member 43 in the thickness direction. The nozzle portion 41 b of the filling pot 41 is formed across the plate body 42 and the dividing member 43. That is, a part of the filling pot 41 (the end of the nozzle portion 41b on the core body 11 side) is formed in the dividing member 43. The cull fastening means 6 is formed on the divided member 43 and deforms the lower end portion (the end portion on the core body 11 side) of the nozzle portion 41b formed on the divided member 43, whereby the cull holding means 6 is held by the nozzle portion 41b. Is configured to tighten.

  As shown in FIG. 3B, the split member 43 is formed with a slit 43 a having one end communicating with the nozzle portion 41 b of the filling pot 41 and the other end opening to the side (outside) of the split member 43. ing. The slit 43a is formed in a straight line parallel to the short side direction of the nozzle portion 41b, and one end thereof communicates with the central portion of one long side of the nozzle portion 41b. The slit 43a is formed so as to penetrate the dividing member 43 in the plate thickness direction.

  The cull fastening means 6 has a pair of lever portions 61 and 61 provided so as to sandwich the slit 43a. In the present embodiment, a pair of second slits 43b and 43b parallel to the slit 43a are formed in the dividing member 43 so as to sandwich the nozzle portion 41b and the slit 43a, whereby the slit 43a and both second slits 43b are formed. A pair of tongue-shaped lever portions 61, 61 are formed between the slits 43b, 43b. That is, the lever portions 61 and 61 are part of the dividing member 43 and are formed in a plate shape. One end of the second slits 43b and 43b extends to the back side (the axial center side of the dividing member 43) from the nozzle portion 41b, and the other end opens to the side (outward) of the dividing member 43.

  In the present embodiment, since the nozzle portion 41b opens to the side via the slit 43a, the resin leaks from the slit 43a if the resin is filled as it is. Therefore, the cull fastening means 6 has a spacer 62 for closing the slit 43a when filling the resin and suppressing the outflow of the resin from the slit 43a. The spacer 62 is formed in a plate shape having the same thickness as the dividing member 43. The spacer 62 is formed in a substantially comb shape in plan view, and includes a first convex portion 62a inserted into the slit 43a and a pair of second convex portions 62b and 62b inserted into the second slits 43b and 43b. The first convex portion 62a and the second convex portions 62b and 62b have a connecting portion 62c that connects the ends of the second convex portions 62b and 62b. A through hole 62d that penetrates the connecting portion 62c in the plate thickness direction is formed in the connecting portion 62c so that the jig can be locked when the spacer 62 is pulled out.

  The cull tightening means 6 is configured to tighten the end of the cull on the core body 11 side by bringing the pair of lever portions 61 and 61 closer to each other (narrowing the slit 43a). Therefore, as shown in FIGS. 4A and 4B, after filling and curing the resin, the spacer 62 is pulled out and detached from the dividing member 43. In addition, in FIG.4 (b), the cross section of the calplate 4 after hardening of resin is represented, and the cross section along the BB line of Fig.4 (a) is represented. By separating the spacer 62 from the split member 43, the slit 43a is opened, and the pair of lever portions 61, 61 can be brought close to each other.

  Further, as shown in FIGS. 5A to 5C, the cull fastening means 6 further includes a holding member 63 that holds the pair of lever portions 61 and 61 in a state of being close to each other. The holding member 63 has a plate-like main body portion 63a and a pair of pin portions 63b and 63b extending downward from the main body portion 63a. Holding member holes 61a and 61a are formed at the end portions of the lever portions 61 and 61 (the end portion opposite to the nozzle portion 41b) so as to penetrate the lever portions 61 and 61 in the plate thickness direction, respectively. By inserting the pin portions 63b and 63b into the holding member holes 61a and 61a, the lever portions 61 and 61 are held close to each other. In order to facilitate the insertion into the holding member holes 61a and 61a, the lower end portions of the pin portions 63b and 63b are formed in a tapered shape with the outer diameter decreasing toward the lower side. The specific shape of the holding member 63 is not limited to this, and can be changed as appropriate.

  When the pair of lever portions 61 and 61 are held close to each other by the cull fastening means 6, the dividing member 43 around the lever portions 61 and 61 and the nozzle portion 41b is elastically deformed, and the lower end portion of the cull 5 (the dividing member) The portion held by the nozzle portion 41b on the 43 side is tightened. When the cull plate 4 is separated from the core body 11 in this state, the elongation at the lower end portion of the tightened cull 5 is suppressed, so that breakage is likely to occur at the boundary position between the cull 5 and the resin 15, and the resin wrinkles In addition, it is possible to suppress the cull 5 from remaining on the core body 11 side. Although not shown in FIGS. 3 to 5, in the rotor core manufacturing apparatus 1, one cull fastening means 6 is provided for one nozzle portion 41b.

(Description of rotor core manufacturing method)
FIG. 6 is a flowchart showing the procedure of the method for manufacturing the rotor core according to the present embodiment. As shown in FIG. 6, in the method for manufacturing a rotor core according to the present embodiment, first, in step S1, a core body forming step for forming the core body 11 is performed. In the core body forming step of step S1, the core 10 is formed by pressing the magnetic steel sheet to form the core piece 12, and laminating a plurality of the formed core pieces 12 and pressing from above and below. The specific process for forming the core body 11 is not limited to this.

  Thereafter, in step S2, a preparation process for setting the core body 11 in the rotor core manufacturing apparatus 1 is performed. In the preparation step of step S <b> 2, the core body 11 is placed on the fixed mold 2, and the magnet 14 is housed in the magnet housing hole 13 of the core body 11. Further, the cull plate 4 and the movable mold 3 are sequentially arranged on the core body 11.

  Thereafter, in step S3, a resin sealing process is performed. In the resin sealing step of step S3, as shown in FIG. 7A, a base material 15a made of a thermosetting resin, which is a raw material of the sealing resin 15, is inserted into the resin inlet 33 of the movable mold 3. Then, while the base material 15a is pushed downward (core body 11 side) by the plunger 7, the base material 15a is melted by heat, and the resin (molten base material 15a) is supplied from the resin inlet 33. At this time, the spacer 62 is set in the split member 43 in order to suppress the resin leakage from the slit 43a.

  As shown in FIG. 7B, the resin supplied from the resin inlet 33 flows into the magnet accommodation hole 13 through the filling pot 41, and the filling pot 41 is filled with the resin. When the resin filled in the magnet accommodation hole 13 is cured by heat, the resin 15 for sealing the magnet accommodation hole 13 is formed, and the cull 5 is formed in the filling pot 41 of the cull plate 4. In the resin sealing step, a part of the core body 11 or the rotor core manufacturing apparatus 1 may be heated in advance, and the base material 15a may be melted and the resin cured by this heat.

  Thereafter, in step S4, a cull separation process is performed. In the cal separation process of step S4, first, as shown in FIG. 8A, the movable mold 3 is moved upward to be detached, and the spacer 62 is pulled out (disengaged from the dividing member 43). After that, as described in FIG. 5C, the pin portions 63b and 63b of the holding member 63 are inserted into the holding member holes 61a and 61a of the lever portions 61 and 61, and the pin portions 63b and 63b are inserted into the lever portion. 61 and 61 are held close to each other. Thereby, the lower end part (end part by the side of the core main body 11) of the cal 5 is clamped, and is hold | maintained in the compressed state.

  Thereafter, as shown in FIG. 8B, the cull plate 4 (the plate body 42 and the dividing member 43) is removed from the core body 11. At this time, fracture occurs at the boundary position between the cal 5 and the resin 15 and the cal 5 and the resin 15 are separated. If the core body 11 from which the cals 5 are separated is removed from the fixed mold 2, the rotor core 10 of FIG. 1 is obtained.

  Thereafter, in step S5, a cull removing process for removing the cull 5 from the cull plate 4 is performed. In the cull removing process of step S5, for example, after removing the holding member 63 from the divided member 43, the divided member 43 is removed from the plate main body 42, and the lower end portion of the calf 5 protruding below the plate main body 42 is pushed upward. Then, the cal 5 is removed from the plate body 42. Note that the specific method of removing the cull 5 from the plate body 42 is not limited to this.

(Operation and effect of the embodiment)
As described above, in the rotor core manufacturing apparatus 1 according to the present embodiment, the cull plate 4 has the cull fastening means 6 for fastening the end of the cull 5 on the core body 11 side and holding it in a compressed state. ing. Thereby, at the time of separation of the cal 5, breakage is likely to occur at the boundary position between the cal 5 and the resin 15, and it is possible to suppress the resin 15 from curling and remaining on the core body 11 side of the cal 5. .

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention. Further, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Rotor core manufacturing apparatus, 2 ... Fixed type | mold, 21 ... Fixed type | mold main body, 22 ... Support member, 22a ... Base part, 22b ... Post part, 23 ... Spacer, 23a ... Insertion hole, 23b ... Pin hole, 23c ... Restriction pin, 3 ... movable type, 31 ... movable type main body, 32 ... plate part, 33 ... resin inlet, 4 ... cul plate, 41 ... filling pot, 41a ... connection part, 41b ... nozzle part, 42 ... plate body, 43 ... Split member, 43a ... Slit, 43b ... Second slit, 5 ... Cull, 6 ... Cull fastening means, 61 ... Lever part, 61a ... Hole for holding member, 62 ... Spacer, 62a ... First convex part, 62b ... 2nd convex part, 62c ... Connection part, 62d ... Through hole, 63 ... Holding member, 63a ... Main body part, 63b ... Pin part, 7 ... Plunger, 10 ... Rotor core, 11 ... Core main body, 11a ... Center hole, 11b ... Ki Department, 11c ... cooling holes 12 ... core pieces, 13 ... magnet containing hole, 14 ... magnet, 15 ... resin, 15a ... base material

Claims (5)

A device that accommodates a magnet in a magnet housing hole formed in a core body, fills and cures the resin in the magnet housing hole that houses the magnet, and fixes the magnet to the core body,
A fixed mold on which the core body containing the magnet is placed in the magnet receiving hole;
A movable mold provided on the core body and having a resin inlet;
A cal plate disposed between the core main body and the movable mold, in which a resin pot that guides the resin flowing in from the resin inflow port to the magnet housing hole and holds a curl that is a cured product of the resin is formed. And comprising
The cull plate has a cull fastening means for fastening the end of the cull on the core body side and holding it in a compressed state.
Rotor core manufacturing equipment. The cull plate has a plate-shaped plate main body, and a plate-shaped divided member that is disposed on the core main body side of the plate main body and is formed with a part of the filling pot,
The split member is formed with a slit having one end communicating with a part of the filling pot and the other end opening to the side of the split member.
The cull fastening means is a part of the split member, has a pair of lever portions provided so as to sandwich the slit, and brings the pair of lever portions closer to each other so that the core side of the cull Configured to tighten the end of the
The rotor core manufacturing apparatus according to claim 1. The cull fastening means includes a holding member that holds the pair of lever portions in a state of being brought close to each other
The rotor core manufacturing apparatus according to claim 2. The cull fastening means has a spacer for closing the slit at the time of filling the resin and suppressing the outflow of the resin from the slit,
The rotor core manufacturing apparatus according to claim 2. A magnet is accommodated in a magnet accommodation hole formed in the core body, and the magnet accommodation hole containing the magnet is filled with resin and cured, and the magnet is fixed to the core body,
Placing the core body containing the magnet in the magnet accommodation hole on a fixed mold;
While providing a movable mold having a resin inlet on the core body,
A filling pot is formed between the core body and the movable mold to guide the resin flowing from the resin inlet into the magnet housing hole and to hold the curl that is a cured product of the resin after the resin is cured. A preparatory process for arranging the calplate,
A resin sealing step of filling the resin supplied from the resin inlet into the magnet accommodation hole through the filling pot, and curing the resin filled in the magnet accommodation hole;
Removing the movable mold, and then removing the cull plate from the core body, thereby separating the cull from the core body, and
The cull plate has a cull fastening means for fastening the end of the cull on the core body side and holding it in a compressed state.
In the cull separation step, the cull is separated from the core body in a state where the end of the cull on the core body side is tightened and compressed by the cull fastening means.
A method for manufacturing a rotor core.

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