JP2006211748A - Manufacturing device of rotor laminated core and manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing device of a rotor laminated core that can stabilize the quality of a product, can inexpensively be manufactured, and is improved in workability, and a manufacturing method. <P>SOLUTION: The manufacturing method of the rotor laminated core is configured such that permanent magnets 37 inserted into N-pieces of magnet insertion holes 35 formed at the rotor laminated core 15 formed by laminating a plurality of core pieces are fixed by injecting resin into the magnet insertion holes 35. A resin-made pot 33 arranged at either the upper part or the lower part of the rotor laminated core 15 is arranged at a position in either of circumferential directions of the rotor laminated core 15, and the resin is injected into each magnet insertion hole 35 from the resin-made pot 33 while sequentially rotating the rotor laminated core 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to the manufacture of a rotor laminated core in which permanent magnets inserted into a plurality of magnet insertion holes formed in a rotor laminated core in which a plurality of iron core pieces are laminated are fixed by injecting resin into the magnet insertion holes. The present invention relates to an apparatus and a manufacturing method.

Conventionally, as a method for manufacturing a rotor laminated iron core, for example, a configuration described in Patent Document 1 is known.
The method described in Patent Document 1 is as follows.
A plurality of iron core pieces are fixed and integrated by punching and caulking or the like, and a plurality of magnet insertion holes (eight in the embodiment) for inserting permanent magnets are formed in the outer peripheral portion, and sealing resin is used. A laminated iron core having a plurality of injection holes for injection is inserted into the bottomed bottom hole, and a permanent magnet is inserted into the magnet insertion hole. Next, the upper mold having the injection hole portion formed at the position coinciding with the injection hole portion is placed on the upper end of the lower mold so that the injection hole portion coincides with the injection hole portion. In a state of being fixed by the fastening means, the resin member is supplied at a predetermined pressure from the resin supply hole portion communicating with the upper mold injection hole portion, and the resin member is filled in the magnet insertion hole. Thereafter, the laminated iron core is heated by the heating means to cure the resin member and fix the permanent magnet to the laminated iron core.

JP 2002-34187 A

However, the conventional method for manufacturing a rotor laminated iron core still has the following problems to be solved.
Since the resin member is filled into eight magnet insertion holes at a time, the filling conditions for each magnet insertion hole are likely to vary due to variations in manufacturing accuracy such as the injection hole and the resin supply hole communicating with the injection hole. The quality of was not stable. Moreover, the pump for supplying the resin member requires a large supply pressure and a large amount of discharge, and is expensive. In particular, in the case of a rotor laminated iron core with different specifications (magnet insertion hole size, position and number), it takes time to form the upper mold resin supply hole and the plurality of injection holes branched from the resin supply hole. Costed.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a manufacturing apparatus and a manufacturing method for a rotor laminated core that can be manufactured at low cost and have excellent workability.

The rotor laminated iron core manufacturing apparatus according to the present invention that meets the above-described object includes a permanent magnet inserted into a plurality of magnet insertion holes formed in a rotor laminated iron core in which a plurality of iron core pieces are laminated, and a resin as the magnet. An apparatus for manufacturing a rotor laminated core that is injected and fixed in an insertion hole, the upper plate member and the lower plate member that are arranged above and below the rotor laminated core and substantially close the magnet insertion hole, One or two resin pots for injecting the resin into the magnet insertion hole in either one of the upper plate member and the lower plate member, a plunger that fits into the resin pot and slides, and the rotor lamination Rotating means for sequentially rotating the iron core.

In the rotor laminated iron core manufacturing apparatus according to the present invention, the resin is a thermosetting resin, and the upper plate member and the lower plate member are respectively heat sources for heating the upper plate member and the lower plate member. The cull portion provided on the discharge side of the resin pot and the magnet insertion hole are connected by a resin groove with a certain distance, and one of the upper plate member and the lower plate member Or both may be provided with a vent that allows the air in the magnet insertion hole to escape to the outside when the resin is sealed.

The method of manufacturing a rotor laminated core according to the present invention that meets the above-described object is characterized in that a permanent magnet is inserted into N magnet insertion holes formed in a rotor laminated core in which a plurality of core pieces are laminated, and a resin is used as the magnet. A method of manufacturing a rotor laminated core that is injected and fixed in an insertion hole, wherein a resin pot provided on either the upper or lower side of the rotor laminated core is placed at any position in the circumferential direction of the rotor laminated core. The resin is poured from the resin pot into the magnet insertion holes while sequentially rotating the rotor laminated core.

In the method for manufacturing a rotor laminated core according to the present invention, the resin pot may be provided on one of an upper plate member and a lower plate member that sandwich the rotor laminated core.
In the method for manufacturing a rotor laminated core according to the present invention, the resin may be a thermosetting resin, and a heat source may be provided for the upper plate member and the lower plate member.

In the manufacturing apparatus of the rotor lamination | stacking iron core of Claims 1 and 2, and the manufacturing method of the rotor lamination | stacking iron core of Claims 3-5, the resin pot provided in any one of the upper and lower sides of a rotor lamination | stacking iron core is used for a rotor. Since the resin is injected from the resin pot into the magnet insertion holes while rotating the rotor laminated iron core sequentially, the resin is filled into all the magnet insertion holes at a time in the past. Compared with the method, the filling condition for each magnet insertion hole becomes constant, thereby stabilizing the product quality and reducing the manufacturing cost of the apparatus.

Particularly, in the rotor laminated core manufacturing apparatus according to claim 2, the resin is a thermosetting resin, and the upper plate member and the lower plate member are provided with heat sources for heating the upper plate member and the lower plate member, respectively. Provided, and is connected by a resin groove with a certain distance between the cull portion provided on the discharge side of the resin pot and the magnet insertion hole, and one or both of the upper plate member and the lower plate member are Since the vent for releasing the air in the magnet insertion hole to the outside when the resin is sealed is provided, no extra resin is required, and the permanent magnet can be securely and firmly fixed in the magnet insertion hole.

5. The method of manufacturing a rotor laminated core according to claim 4, wherein the resin pot is provided on one of an upper plate member and a lower plate member that sandwich the rotor laminated core, and the rotor laminated iron core is provided on the upper plate member and the lower plate. Since it can rotate with a member, handling of a rotor lamination iron core is easy.
In the method for manufacturing a rotor laminated core according to claim 5, since the resin is a thermosetting resin and the upper plate member and the lower plate member are provided with a heat source, the fixing time of the permanent magnet can be shortened and the workability is improved. improves.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is an explanatory view of an apparatus for manufacturing a rotor laminated core according to an embodiment of the present invention, FIG. 2 is a plan view of the rotor laminated core, and FIG. 3 is a rotation according to an embodiment of the present invention. It is explanatory drawing of the modification of the manufacturing apparatus of a child laminated core.

As shown in FIGS. 1 and 2, a rotor laminated core manufacturing apparatus 10 according to an embodiment of the present invention is a rectangular plate disposed at the upper and lower ends of four guide posts 11 that are vertically erected. Upper and lower fixing bases 12 and 13 and an upper plate that is disposed above and below the rotor laminated core 15 at an intermediate position between the upper fixing base 12 and the lower fixing base 13 and can sandwich the rotor laminated core 15 from above and below. A member 14a and a lower plate member 17 and a rotating means 18 for sequentially rotating the rotor laminated core 15 are provided. The upper plate member 14a that moves up and down along the guide post 11 includes a rectangular plate-shaped upper mold 14 and an upper pressing plate 16 that is disposed on the lower side of the upper mold 14 and can press the rotor laminated core 15 from above. I have.

The lower plate member 17 includes a rectangular plate-shaped lower pressing plate 19 on which the rotor laminated iron core 15 is mounted, and a rectangular plate-shaped lower mold 20 on which the lower pressing plate 19 is mounted. At the center of the upper surface of the lower pressing plate 19, a guide core 22 is provided that is mounted in a shaft hole 21 formed in the center of the rotor laminated core 15. The lower pressing plate 19 and the guide core 22 constitute a tray that conveys the rotor laminated core 15 in a mounted state.

A hydraulic cylinder 23, which is an example of an elevating means, is attached to the center position of the upper fixing base 12, passes through the upper fixing base 12, and connects to the rod 23 a of the hydraulic cylinder 23 via a connection fitting. The upper part of is connected. The hydraulic cylinder 23 is driven and the upper die 14 is moved up and down along the guide post 11 to leave a vertical gap G between the upper pressing plate 16 and the upper die 14. The laminated core 15 can be rotated, and the rotor laminated core 15 can be pressed downward via the upper pressing plate 16. In addition, an air cylinder, an electric cylinder, a worm jack, etc. can also be used as a raising / lowering means.

The rotating means 18 includes a thrust bearing 24 and a radial bearing 25 that are provided perpendicularly to the center of the lower surface of the lower mold 20, pass through the center of the lower fixing base 13, and are arranged at the upper and lower positions of the center of the lower fixing base 13. A rotating shaft 26 that is rotatably supported via the rotating shaft 26, a worm wheel 27 that is provided at the lower end of the rotating shaft 26, a worm shaft 28 that is screwed to the worm wheel 27, and a lower fixing base 13 that rotates the worm shaft 28. And a motor with a reduction gear (not shown) for driving. By driving the motor with a speed reducer, the rotor laminated core 15 placed on the lower mold 20 can be sequentially rotated by a predetermined rotation angle (45 degrees in the present embodiment).

A hydraulic cylinder 29 is mounted at a position eccentric from the center P of the upper fixing base 12 (left side in FIG. 1), and a plunger 32 with a rod is connected to a rod 30 of the hydraulic cylinder 29 via a connection fitting 31. Has been. The upper mold 14 is formed with a single resin pot 33 penetrating so that a plunger 32 can be inserted and slides, and a raw material (tablet) T of a thermosetting resin, which is an example of a resin, can be charged. Has been. The upper pressing plate 16 is formed with a plurality of (eight in the present embodiment) cull portions 34 that can communicate with the lower end of the resin pot 33 of the upper mold 14 and are formed as an inverted conical channel / resin reservoir. ing.

As shown in FIG. 2, when the rotor laminated core 15 in which a plurality of iron core pieces are laminated is viewed in plan, the cull portions 34 provided on the upper pressing plate 16 are circular on the outer peripheral portion of the rotor laminated core 15. It is at the radially inner position of N = 8 magnet insertion holes 35 formed at predetermined intervals in the circumferential direction.
As shown in FIGS. 1 and 2, the bottom of the cull portion 34 of the upper pressing plate 16 that contacts the upper end of the rotor laminated core 15 is made of a thermosetting resin between the cull portion 34 and the magnet insertion hole 35. A resin groove (runner) 39 serving as a passage is formed. That is, the cull portion 34 and the magnet insertion hole 35 are connected by the resin groove 39 with a certain distance.

On the other hand, the resin pot 33 provided in the upper mold 14 rotates the rotor laminated core 15 every 45 degrees so that the lower end of the resin pot 33 communicates with each cull portion 34 in sequence. By driving, the thermosetting resin put into the resin pot 33 can be discharged to the cull portion 34 communicated with the plunger 32 by sliding of the plunger 32.

The volume of the resin pot 33 can store the amount of thermosetting resin that can fix the permanent magnets 37 inserted into the eight magnet insertion holes 35 of the single rotor laminated core 15. . The upper mold 14 is provided with an electric heater (not shown) as an example of a heat source. By heating the resin pot 33 to about 170 ° C. by the electric heater, the viscosity of the thermosetting resin is increased. Can be lowered.

A lower pressing plate 19 is disposed at the bottom of the rotor laminated core 15 to prevent resin leakage from the magnet insertion hole 35. The lower pressing plate 19 is provided with an air vent (not shown) that is an example of a vent for letting air from the magnet insertion hole 35 escape when the thermosetting resin is sealed. The air vent is composed of a groove having a depth of 30 to 50 μm, which allows air to escape but does not allow the thermosetting resin to pass through. The air vent can also be formed on the upper pressing plate 16.

The lower mold 20 is provided with an electric heater (not shown) as an example of a heat source, and the lower mold 20 can be heated to about 170 ° C., thereby being injected into the magnet insertion hole 35. Curing of the thermosetting resin thus made can be promoted. Therefore, the thermosetting resin pushed out from the resin pot 33 of the upper mold 14 passes through the cull portion 34 and the resin groove 39 of the upper pressing plate 16 and one magnet insertion hole 35 of the rotor laminated core 15. The permanent magnet 37 can be fixed to the magnet insertion hole 35 by entering the inside and covering and hardening the periphery of each permanent magnet 37 disposed inside.

Four hydraulic cylinders 41 are attached to the four corners on the lower mold 20 to increase and decrease the vertical distance K between the upper pressing plate 16 and the lower mold 20. By driving the hydraulic cylinder 41, with the gap K widened, the permanent magnet 37 is placed in the magnet insertion hole 35 and the rotor laminated core 15 placed on the tray is taken into the lower mold 20 or is thermoset. The rotor laminated core 15 into which the conductive resin is injected can be taken out from the lower mold 20.

The tablet T, which is a raw material of the thermosetting resin, operates the hydraulic cylinder 23 and the hydraulic cylinder 29 to raise the upper mold 14 and the plunger 32, so that the vertical direction between the upper pressing plate 16 and the upper mold 14 is increased. While opening the space | interval G, in the state which expanded the space of the resin pot 33 under the plunger 32, it can take in in the resin pot 33 from the downward direction. In addition, the codes | symbols 42 and 43 in FIG. 2 represent the crimping | crimped part for a several sheets of iron core piece to be laminated and crimped.

Then, the manufacturing method of the rotor lamination | stacking iron core which concerns on one embodiment of this invention using the manufacturing apparatus 10 of a rotor lamination | stacking iron core is demonstrated.
Each of the electric heaters heats the lower mold 20 and the upper mold 14, operates the hydraulic cylinder 23 to raise the upper mold 14 to the upper limit position, and operates the hydraulic cylinder 29 to operate the plunger 32. Move to the ascent end position.

The hydraulic cylinder 41 is driven to increase the distance K between the upper pressing plate 16 and the lower mold 20 and is mounted on a tray including the lower pressing plate 19 and the guide core 22, and the permanent magnet 37 is inserted into the magnet insertion hole 35. The rotor laminated iron core 15 thus formed is arranged at a predetermined position on the lower mold 20 via, for example, a positioning pin. Here, it is preferable that the rotor laminated core 15 is preheated to about 170 ° C. separately by an electric heater.

With the oil on the head side of the hydraulic cylinder 41 being drained, the upper pressing plate 16 is dropped onto the rotor laminated core 15 by its own weight, and the vertical gap G between the upper pressing plate 16 and the upper mold 14 is maintained. The tablet T of thermosetting resin is put into the resin pot 33 from below, and the thermosetting resin is dissolved by the heat from the upper mold 14.

Next, the hydraulic cylinder 23 is operated to lower the upper mold 14 and press the upper pressing plate 16, and the rotor laminated core 15 is pressed and held between the upper plate member 14 a and the lower plate member 17. As a result, the upper plate member 14 a and the lower plate member 17 substantially close the magnet insertion hole 35. When the upper mold 14 is lowered, the hydraulic cylinder 29 is driven, and the plunger 32 is also lowered according to the lowering amount of the upper mold 14.

Thereafter, the hydraulic cylinder 29 is further operated to push down the plunger 32, and the melted thermosetting resin in the resin pot 33 is inserted into the magnet through the cull portion 34 and the resin groove 39 of the upper pressing plate 16. Injection into the hole 35. At this time, the air in the magnet insertion hole 35 is discharged to the outside through the air vent. Due to the curing of the thermosetting resin injected into the magnet insertion hole 35, the permanent magnet 37 disposed inside is fixed in the magnet insertion hole 35 in about 3 minutes.

After actuating the hydraulic cylinder 29 and the hydraulic cylinder 23 to raise the plunger 32 and the upper mold 14 together slightly (to the extent that the thermosetting resin does not leak), the rotating means 18 is driven to lower the lower plate member 17, the rotor laminated iron core 15 and the upper pressing plate 16 are integrally rotated by 45 degrees clockwise with respect to the center O of the lower fixing base 13, and a curl portion in which a thermosetting resin is accumulated immediately below the resin pot 33 34 is set so as to move, and the thermosetting resin of the resin pot 33 is inserted into the magnet insertion hole 35 via the cull portion 34 and the resin groove 39 in accordance with the above-described procedure. Inject into. The above is further repeated 6 times, and the rotor laminated core 15 is rotated by 45 degrees, and a thermosetting resin is injected into the eight magnet insertion holes 35 to put the permanent magnets 37 into the magnet insertion holes 35. Fix it.

FIG. 3 shows a rotor laminated core manufacturing apparatus 50 which is a modification of the rotor laminated core manufacturing apparatus 10. In the rotor laminated core manufacturing apparatus 10, the thermosetting resin is sealed from the top into the rotor laminated core 15 from one resin pot 33, while in the rotor laminated core manufacturing apparatus 50, the thermosetting resin is thermoset. The difference is that the conductive resin is sealed from the two resin pots 51 into the rotor laminated core 15 from below, and the other points are substantially the same. In addition, about the same component as the manufacturing apparatus 10 of a rotor lamination | stacking iron core, the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIG. 3, the rotor laminated core manufacturing apparatus 50 includes a rectangular plate-like upper fixing base 52 and lower fixing base 53 arranged at the upper and lower ends of four guide posts 11 vertically arranged. The upper platen 56 and the lower plate member 54 which are arranged at intermediate positions between the upper fixed base 52 and the lower fixed base 53 and sandwich the rotor laminated core 15 from above and below, and rotating means 58 which sequentially rotates the rotor laminated core 15. And have. The lower plate member 54 is a rectangular plate-shaped lower die 55 that moves up and down along the guide post 11, and the rotor laminated iron core 15 is placed on the upper surface, and the lower pressing plate 57 that can press the rotor laminated iron core 15 from below. And. The upper plate member 56 has an upper pressing plate 60 that faces the lower pressing plate 57 and can press the rotor laminated core 15 from above, and an upper mold 59 that is placed on the upper pressing plate 60. Yes.

Four hydraulic cylinders that expand and reduce the vertical distance H between the upper mold 59 and the lower pressing plate 57 at the four corners on the rectangular pressing plate 57 on which the rotor laminated core 15 is placed. 41 is attached. A guide core 22 is provided at the center of the lower surface of the upper pressing plate 60 and is mounted in a shaft hole 21 formed in the center of the rotor laminated core 15. The upper pressing plate 60 and the guide core 22 constitute a mounting jig for transporting the rotor laminated core 15 in a mounted state.

A hydraulic cylinder 61, which is an example of an elevating means, is attached to the center position of the lower fixing base 53, and a lower part of the lower mold 55 is connected to a rod 61 a of the hydraulic cylinder 61 that penetrates the lower fixing base 53 via a connection fitting. Are connected. By driving the hydraulic cylinder 61 and raising and lowering the lower die 55 along the guide post 11, a vertical interval can be provided between the lower pressing plate 57 and the lower die 55. The rotor laminated core 15 can be rotated by the means 58, and the rotor laminated core 15 can be pressed upward via the lower pressing plate 57.

The rotating means 58 is provided perpendicularly to the center of the upper surface of the upper mold 59, passes through the central portion of the upper fixing base 52, and is disposed at the vertical position of the central portion of the upper fixing base 52 and the radial bearing 62 and the radial bearing. Rotating shaft 64 supported by rotation through 63, worm wheel 65 provided at the upper end of rotating shaft 64, worm shaft 28 screwed into worm wheel 65, and upper fixing base 52 provided on worm shaft 28. And a motor with a speed reducer (not shown).

The lower pressing plate 57 is formed with eight cull portions 66 at positions that divide the circumferential direction into eight equal parts, and the lower mold 55 has two pieces at positions that communicate with the eight cull portions 66. The resin pot 51 is formed. The thermosetting resin in each resin pot 51 communicates with the cull portion 66 at the upper end portion of the cull portion 66 of the lower pressing plate 57 by a plunger 68 driven by a hydraulic cylinder 67 attached to the lower fixing base 53. It is injected from the lower end portion into the magnet insertion hole 35 of the rotor laminated core 15 via the resin groove formed in this way. The shape of the cull portion 66 is an eccentric conical shape, and the resin pot 51 and the cull portion 66 are located on the radially outer side of the magnet insertion hole 35.

Since the rotor laminated core manufacturing apparatus 50 supplies thermosetting resin from two resin pots 51, it is compared with the rotor laminated core manufacturing apparatus 10 that supplies thermosetting resin from one resin pot 33. Thus, the capacity of the resin pot 51 can be reduced, and the enclosing operation time can be shortened. Further, since the thermosetting resin is supplied from below, it is possible to prevent leakage of the thermosetting resin when the rotor laminated core 15 is rotated.
Note that the method for manufacturing the rotor laminated core using the rotor laminated core manufacturing apparatus 50 is substantially the same as that using the rotor laminated core manufacturing apparatus 10, and thus the description thereof is omitted.

The present invention is not limited to the above-described embodiments, and can be changed without departing from the gist of the present invention. For example, some or all of the above-described embodiments and modifications are included. The case where the manufacturing apparatus and the manufacturing method of the rotor laminated core of the present invention are combined and included in the scope of the right of the present invention.
The upper die is provided on the upper plate member, and the lower die is provided on the lower plate member. However, the present invention is not limited to this, and the lower press plate and the upper press are provided without providing the upper die and the lower die, if necessary. It is also possible to provide only the plate and provide one or two resin pots on the upper pressing plate or the lower pressing plate.

Although the tray which conveys the rotor lamination | stacking iron core 15 in the mounting state was comprised by the lower press plate and the guide core, it is not limited to this, A tray can also be abbreviate | omitted as needed.
Although the caulking portion is formed on the rotor laminated iron core, the caulking portion is not limited to this, and the caulking portion can be omitted as necessary. In addition, when the crimping part is not formed in the laminated iron core piece, the lower pressing plate and the guide core facilitate the centering operation of the shaft hole of the rotor laminated iron core.
The resin is a thermosetting resin. However, the resin is not limited to this, and can be a resin having other characteristics (for example, a thermoplastic resin) as long as the permanent magnet can be fixed depending on the situation. Although the mold and the lower mold are provided with heat sources, the present invention is not limited to this, and the heat sources may be omitted as necessary.

The rotating means is configured to include a rotating shaft, a worm wheel, and the like, but is not limited thereto, and the rotor laminated core can be rotated by other structures as necessary.
The rotor laminated iron core has eight magnet insertion holes having a rectangular cross section. However, the present invention is not limited to this, and other numbers of magnet insertion holes and various shapes of magnet insertion holes may be formed as necessary. You can also.
The hydraulic cylinder 29 (67) is attached to the upper fixed base (lower fixed base), but is not limited to this, and can be attached to the upper plate member (lower plate member) as necessary. In this case, the stroke of the hydraulic cylinder can be reduced, and the operation of the hydraulic cylinder is simplified.

It is explanatory drawing of the manufacturing apparatus of the rotor lamination | stacking iron core which concerns on one embodiment of this invention. It is a top view of a rotor lamination | stacking iron core. It is explanatory drawing of the modification of the manufacturing apparatus of the rotor lamination | stacking iron core which concerns on one embodiment of this invention.

Explanation of symbols

10: Manufacturing apparatus for rotor laminated core, 11: Guide post, 12: Upper fixing base, 13: Lower fixing base, 14: Upper mold, 14a: Upper plate member, 15: Rotor laminated iron core, 16: Upper pressing Plate: 17: Lower plate member, 18: Rotating means, 19: Lower pressing plate, 20: Lower mold, 21: Shaft hole, 22: Guide core, 23: Hydraulic cylinder, 23a: Rod, 24: Thrust bearing, 25 : Radial bearing, 26: Rotating shaft, 27: Worm wheel, 28: Worm shaft, 29: Hydraulic cylinder, 30: Rod, 31: Connection fitting, 32: Plunger, 33: Resin pot, 34: Cull part, 35: Magnet insertion hole, 37: Permanent magnet, 39: Resin groove, 41: Hydraulic cylinder, 42, 43: Caulking part, 50: Manufacturing apparatus for rotor laminated core, 51: Resin pot, 52: Upper fixing base, 5 : Lower fixing base, 54: Lower plate member, 55: Lower die, 56: Upper plate member, 57: Lower pressing plate, 58: Rotating means, 59: Upper die, 60: Upper pressing plate, 61: Hydraulic cylinder 61a: Rod, 62: Thrust bearing, 63: Radial bearing, 64: Rotary shaft, 65: Worm wheel, 66: Cull part, 67: Hydraulic cylinder, 68: Plunger

Claims (5)

A rotor laminated core manufacturing apparatus that fixes a permanent magnet inserted into a plurality of magnet insertion holes formed in a rotor laminated iron core in which a plurality of iron core pieces are laminated by injecting resin into the magnet insertion holes. And
An upper plate member and a lower plate member which are arranged above and below the rotor laminated core and substantially close the magnet insertion hole;
Either one of the upper plate member and the lower plate member, one or two resin pots that inject the resin into the magnet insertion hole, and a plunger that fits and slides into the resin pot;
An apparatus for manufacturing a rotor laminated core, comprising: a rotating means for sequentially rotating the rotor laminated core. 2. The manufacturing apparatus of a rotor laminated core according to claim 1, wherein the resin is a thermosetting resin, and the upper plate member and the lower plate member are heated by the upper plate member and the lower plate member, respectively. A heat source is provided, and a cull portion provided on the discharge side of the resin pot and the magnet insertion hole are connected by a resin groove with a certain distance, and the upper plate member and the lower plate member One or both of them is provided with a vent for releasing the air in the magnet insertion hole to the outside when the resin is sealed. This is a method for manufacturing a rotor laminated core in which permanent magnets inserted into N magnet insertion holes formed in a rotor laminated iron core in which a plurality of iron core pieces are laminated are injected and fixed into the magnet insertion holes. And
A resin pot provided on either one of the upper and lower sides of the rotor laminated iron core is provided at any position in the circumferential direction of the rotor laminated iron core, and the rotor laminated iron core is sequentially rotated while each of the resin pots is rotated. A method for manufacturing a rotor laminated core, wherein the resin is injected into a magnet insertion hole. 4. The method of manufacturing a rotor laminated core according to claim 3, wherein the resin pot is provided on one of an upper plate member and a lower plate member that sandwich the rotor laminated core. Manufacturing method of iron core. 5. The method of manufacturing a rotor laminated core according to claim 4, wherein the resin is a thermosetting resin and a heat source is provided in the upper plate member and the lower plate member. Method.

Images