JP2009268307A - Rotor manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor manufacturing apparatus capable of improving production efficiency of rotors. <P>SOLUTION: In the rotor manufacturing apparatus, a receiving-board moving means 140 raises a receiving board 136 to the position of a rotor 10 placed on a palette 132 and further raises the receiving board 136 to a predetermined position after placing the rotor 10 on the receiving board 136. When the receiving board 136 arrives at the predetermined position, a nail member movement means 148 performs position alignment so that the hole part of a nail member 144 and an injection hole of an upper pressure plate become substantially coaxial by advancing the nail member 144 and its pair 146 of nail member to the rotor 10 and the rotor core 12 is held by the pair of nail members 144 and 146 in a state after the position adjustment is completed. Afterwards, the nozzle leading part 246 of a resin injection nozzle 126 is inserted into the injection hole from the nozzle leading part 246 for resin injection the storage hole part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a manufacturing apparatus for a rotor used in a rotating electrical machine such as a motor and a generator, wherein a magnet is stored in a storage hole formed in a yoke of the rotor, and then a resin is injected into the storage hole. The present invention relates to a rotor manufacturing apparatus for fixing a magnet.

  Conventionally, a magnet-embedded rotor in which a magnet is incorporated in a storage hole formed in a yoke is known. In the inner rotor type rotating electrical machine using this rotor, since the stator is disposed on the outer periphery of the inner rotor, in order to effectively use the magnetic force by reducing the distance between the magnet and the stator as much as possible, It is desirable that the magnet be fixed to the outer peripheral side of the storage hole.

  Usually, in the rotor, the magnet is fixed in the storage hole by filling the storage hole with resin or adhesive. In Patent Document 1, a rotor core (yoke) is held by an upper mold and a lower mold, and a molten resin is pressurized and injected from a cylinder provided in the upper mold into the storage hole. A technique for performing resin molding by pressing from the inner diameter side to the outer diameter side of the rotor core is disclosed.

JP 2007-215301 A

  In the rotor used in the rotating electrical machine described above, the rotor core (yoke) is generally a laminated body formed by laminating thin plates (steel plates). In the method in which the resin molding is performed on one side, the resin may leak out from the gaps (gap between the thin plates) of the laminate. In particular, when the housing hole is filled with a resin material having a relatively low viscosity (for example, silicone resin), the risk of leakage to the outside is further increased.

  Therefore, in the technique of Patent Document 1, the resin is injected from the upper mold into the storage hole in which the magnet is stored while the rotor core is held by the upper mold and the lower mold. In this case, in a state where the convex key formed on the rotor core is aligned with the concave key formed on the convex portion of the lower mold, the lower mold convex portion and the hollow portion of the rotor core are fitted, By disposing the disk-shaped upper mold on the upper surface of the rotor core, the upper mold and the lower mold are disposed with respect to the rotor core. Therefore, in the technique of Patent Document 1, since it takes a long time to set the upper mold and the lower mold with respect to the rotor core, the movement control of the upper mold and the lower mold related to the arrangement is performed. It is not possible to improve the rotor production efficiency including (handling).

  The present invention has been made in consideration of the above-described problems, and an object of the present invention is to provide a rotor manufacturing apparatus that can improve rotor production efficiency.

  The rotor manufacturing apparatus according to the present invention basically includes a magnet, a ring-shaped yoke in which a storage hole for storing the magnet is formed, a rotating shaft disposed on the inner diameter side of the yoke, and the yoke And a rotor manufacturing device for injecting resin into the storage holes in which the magnets are stored through injection holes formed in the end surface plate. It is.

  And this rotor manufacturing apparatus has the following characteristics.

The rotor manufacturing apparatus includes:
A pallet on which the rotor is placed and a portion corresponding to the rotating shaft is opened to be an opening;
A transport mechanism for transporting the pallet;
A cradle for mounting the rotor by receiving the rotating shaft of the rotor;
The rotor is placed on the cradle by moving the cradle to the position of the rotating shaft of the rotor placed on the pallet through the opening, and the rotor is further placed. A pedestal moving means for moving the pedestal made to a predetermined position along the axial direction;
A pair of claw members that sandwich the yoke in the axial direction, and of the pair of claw members, a pair of claw members having a hole formed in one claw member;
Claw member advancing and retracting means for advancing the pair of claw members to the rotor moved to the predetermined position so that the hole and the injection hole are substantially coaxial, and gripping the yoke;
The hole and the injection hole are substantially coaxial, and are inserted into the hole while the yoke is gripped by the pair of claw members, and the storage hole in which the magnet is stored through the injection hole. A resin injection nozzle for injecting the resin.

  According to said structure, the said base movement means moves the said base to the position of the said rotating shaft of the said rotor mounted in the said pallet first. When the rotor is placed on the cradle, the cradle moving means moves the cradle to the predetermined position. When the cradle reaches the predetermined position, the claw member advancing / retreating means moves the pair of claw members to perform alignment so that the hole and the injection hole are substantially coaxial, The yoke is gripped by the pair of claw members in a state where the alignment is completed (a state where the hole and the injection hole are substantially coaxial). Thereafter, the resin injection nozzle is inserted into the hole, and the resin is injected into the storage hole through the injection hole.

  Accordingly, when the cradle is moved to the predetermined position, the yoke is gripped by the pair of claw members, and the resin is injected into the storage hole in this state. As a result, it is possible to shorten the time required for moving the rotor placed on the pallet to the predetermined position and injecting the resin into the storage hole. It can be greatly improved.

  Further, since it is not necessary to press and hold the rotor (the yoke) placed on the pallet, it is possible to reduce the weight of the pallet and the transport mechanism. The production equipment of the entire apparatus can be simplified.

  Here, it is preferable that the rotor manufacturing apparatus further includes another pair of claw members disposed in an axially symmetrical position with respect to the pair of claw members with the rotation axis as a center.

  As a result, the entire yoke can be pressed and held substantially uniformly, so that the rotor can be gripped with a good balance.

  In the rotor manufacturing apparatus, a capacity measurement nozzle that injects air into the storage hole in which the magnet is stored via the injection hole, and the magnet is stored based on the air injected into the storage hole. It is preferable to further comprise capacity measuring means for measuring the capacity in the storage hole and calculating the capacity of the space in the storage hole in which the magnet is stored based on the measured capacity.

  Accordingly, the volume of the space in the storage hole in which the magnet is stored is measured in advance, and the amount of the resin injected is insufficient by injecting the amount of the resin corresponding to the measured capacity into the storage hole. Or leakage of the resin from the yoke can be reliably prevented.

  Further, the claw member in which the hole is formed in the pair of claw members is a claw member through which the resin injection nozzle is inserted, and the claw member in which the hole is formed in the other pair of claw members. The claw member corresponding to is preferably formed with another hole portion through which the capacity measuring nozzle is inserted.

  This makes it possible to continuously perform the measurement of the volume of the space in the storage hole in which the magnet is stored and the injection of the resin at the predetermined position, thereby further improving the production efficiency of the rotor. Can be improved.

  Furthermore, when the plurality of storage holes are formed in the yoke and the plurality of injection holes are formed in the end face plate, the cradle moving means is configured to be able to rotate the cradle. Is preferred.

  As a result, even when a plurality of the storage holes are formed in the yoke and a plurality of the injection holes are formed in the end face plate, the resin can be efficiently filled. Further, since the cradle can be rotated, the alignment between the hole and the injection hole is further facilitated.

  Furthermore, it is preferable that the claw member advancement / retraction means advance and retract the pair of claw members in the radial direction of the yoke and advance / retreat in the axial direction.

  Accordingly, the pair of claw members are advanced and retracted in the radial direction and the axial direction, thereby setting and releasing the gripping state of the yoke by the pair of claw members (opening and closing of the pair of claw members with respect to the yoke). It can be done easily. Further, by the advance and retreat in the radial direction and the axial direction by the pair of claw members, and the movement and rotation of the cradle, alignment of the hole portion and the injection hole, and the storage hole and the injection hole are performed. It is possible to efficiently inject the resin when a plurality of is formed.

  Moreover, it is preferable that the said rotor manufacturing apparatus is further provided with the heating means arrange | positioned around the said yoke with which the said resin was filled with the said resin hole, and heating and hardening the said resin with which it filled.

  Thereby, the rotor can be manufactured in a short time.

  According to the present invention, first, the cradle moving means moves the cradle to the position of the rotating shaft of the rotor placed on the pallet. When the rotor is placed on the cradle, the cradle moving means moves the cradle to a predetermined position. When the cradle reaches the predetermined position, the claw member advancing / retreating means moves the pair of claw members to align the hole and the injection hole so as to be substantially coaxial, and the alignment is completed. In this state (in a state where the hole and the injection hole are substantially coaxial), the yoke is gripped by the pair of claw members. Thereafter, a resin injection nozzle is inserted into the hole, and the resin is injected into the storage hole through the injection hole.

  Accordingly, when the cradle is moved to the predetermined position, the yoke is gripped by the pair of claw members, and the resin is injected into the storage hole in this state. As a result, it is possible to shorten the time required for moving the rotor placed on the pallet to the predetermined position and injecting the resin into the storage hole. It can be greatly improved.

  Further, since it is not necessary to press and hold the rotor (the yoke) placed on the pallet, the pallet and the transport mechanism can be reduced in weight, and as a result, the rotor manufacturing apparatus The entire production facility can be simplified.

  A preferred embodiment of a rotor manufacturing apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

  First, before describing the rotor manufacturing apparatus according to this embodiment, a rotor 10 manufactured by the rotor manufacturing apparatus will be described with reference to FIGS. 1 and 2.

  The rotor 10 is an inner rotor used in a rotating electric machine such as a motor and a generator, and has a cylindrical rotor core (ring-shaped yoke) 12 and a bottomed cylindrical boss provided on the inner diameter side of the rotor core 12. (Rotating shaft) 14 and a hole 18 formed at the center of the bottom 16 of the boss 14. Six cylindrical collars 20 are mounted on the bottom portion 16 so as to be spaced apart from the hole 18 in the radial direction of the boss portion 14. A bolt (not shown) is fixed to the boss portion 14 by inserting a bolt through each collar 20. As shown in FIGS. 1 and 2, the rotor core 12 and the boss portion 14 are arranged substantially coaxially, so that the axial direction of the rotor core 12 and the axial direction of the boss portion 14 substantially coincide with each other.

  The rotor core 12 is configured by laminating thin steel plates 28 in the axial direction (vertical direction in FIGS. 1, 7, and 8), and the laminated thin steel plates 28 are ring-shaped upper holding plates (end plate) 34. And it is mounted on the outer peripheral side of the boss portion 14 in a state of being sandwiched by the lower holding plate (end face plate) 36. That is, the rotor core 12 is mounted on the outer peripheral side of the boss portion 14 between the protruding portion 32 on the lower end portion side of the boss portion 14 and the protruding portion 26 on the upper end portion side of the boss portion 14, and constitutes the rotor core 12. The laminated thin steel plate 28 and the upper restraining plate 34 have an allowance with respect to the outer peripheral surface of the boss portion 14, and the outer periphery of the boss portion 14 is above the lower restraining plate 36 disposed on the protruding portion 32 side. Press-fitted to the side. The upper restraining plate 34 and the lower restraining plate 36 are respectively disposed on the rotor 10 so as to substantially cover the laminated thin steel plates 28 from above and below. The upper holding plate 34 and the lower holding plate 36 are made of, for example, a stainless steel plate.

  On the outer peripheral side of the rotor core 12, recesses 44 are formed along the axial direction at predetermined angular intervals, and between the two recesses 44 in the rotor core 12, two storage holes 38 are formed along the axial direction. ing. The storage hole 38 is formed in a rectangular shape in a plan view of FIG.

  In each storage hole 38, a magnet 40 is stored, and a space formed by each storage hole 38 and magnet 40 is filled with a resin 42 such as silicone resin.

  When this rotor 10 is applied to a rotating electrical machine, since the stator is disposed on the outer periphery thereof, in order to effectively use the magnetic force by reducing the distance between the magnet 40 and the stator as much as possible, The magnet 40 is fixed to the outer peripheral side of the storage hole 38. In this case, an arc-shaped recess 50 is formed in a plan view in the inner diameter direction of the storage hole 38, while 24 pieces of the upper holding plate 34 face the arc-shaped recess 50 of the storage hole 38. Since the injection hole 48 is formed and the resin 42 is pressurized and injected (press-filled) into the recess 50 through the injection hole 48, the magnet 40 is placed on the outer peripheral side of the rotor core 12 in the accommodation hole 38. It is fixed so that it can be brought together. Further, twelve concave portions 46 are further formed in the upper holding plate 34 corresponding to the concave portions 44 of the rotor core 12.

  The manufacturing apparatus (rotor manufacturing apparatus) 60 of the rotor 10 configured as described above will be described with reference to FIGS.

  The rotor manufacturing apparatus 60 includes a resin injection device 120 (see FIGS. 3 to 7), a high-frequency heating device (see FIG. 8), and a volume calculation mechanism 100 (see FIG. 14).

  First, the resin injection device 120 will be described with reference to FIGS.

  As shown in FIGS. 3 and 4, the resin injection device 120 includes a resin injection nozzle moving mechanism 128 that is attached to a standing portion 124 disposed on the base 122 and that can move the resin injection nozzle 126, and a horizontal direction. Are arranged on a conveyor (conveying mechanism) 130, a pallet 132 that is conveyed by the conveyor 130 and on which the rotor 10 is placed, a table 134 that is arranged in the middle of the conveyor 130, and a base 142 that is directly below the table 134. Pedestal moving means 140, a cradle 136 attached to the tip of a rotating shaft 138 extending upward from the pedestal moving means 140, and two claw member advancing and retreating on the top plate of the table 134 Means 148 and a pair of claw members 144 and 146 attached to each claw member advance / retreat means 148.

  Here, the resin injection nozzle moving mechanism 128 is configured as follows.

  A drive motor 152 is disposed on a support plate 150 disposed at the upper end of the standing portion 124. A drive shaft 153 depending from the drive motor 152 is connected to the ball screw 160 via a coupling 154. The ball screw 160 is supported in the vertical direction by support members 156 and 158 provided on the side surface of the standing portion 124.

  A table 164 is disposed on the ball screw 160 via a bearing block 162, and when the ball screw 160 rotates via the drive shaft 153 and the coupling 154 under the drive action of the drive motor 152, the bearing block 162 and The table 164 can be moved up and down within the range of the distance between the support members 156 and 158 under the guiding action of the ball screw 160.

  A table 168 extending in the horizontal direction (left and right direction in FIG. 4) is attached to the table 164 via a substantially triangular support plate 166, and a drive motor 170 is attached to the table 168. A drive shaft 171 extending in the horizontal direction from the drive motor 170 is connected to a ball screw 178 via a coupling 172. The ball screw 178 is supported in the horizontal direction by support members 174 and 176 mounted on the bottom surface of the table 168.

  A table 182 is disposed on the ball screw 178 via a bearing block 180. When the ball screw 178 rotates via the drive shaft 171 and the coupling 172 under the drive action of the drive motor 170, the bearing block 180 and The table 182 is movable in the horizontal direction within the distance between the support members 174 and 176 under the guiding action of the ball screw 178.

  A substantially trapezoidal support plate 184 disposed on the bottom surface of the table 182 and a table 186 are mounted on the table 182 in the vertical direction. On the surface of the table 186 on the resin injection nozzle 126 side, a pair of slide rails 204 extending in the horizontal direction (left-right direction in FIG. 3) are provided on the upper end side and the lower end side of the table 186, respectively, and a drive motor 188 is further provided. Has been placed. The drive shaft 189 extending in the horizontal direction from the drive motor 188 is connected to a ball screw 198 via a coupling 190. The ball screw 198 extending in the horizontal direction between the slide rails 204 is supported in the horizontal direction by support members 192 and 196 attached to the surface of the table 186.

  As shown in FIG. 3, the ball screw 198 has screw portions formed on the support member 192 side (base end portion side) and the support member 196 side (tip end portion side), and is formed on the center portion. Not. The screw portion on the distal end side is a reverse screw with respect to the screw portion on the proximal end side.

  The ball screw 198 is provided with a table 202 via a pair of bearing blocks 200 (only one slide block 200 is shown in FIG. 4). A pair of slide blocks 206 are disposed on the pair of slide rails 204 on the bottom surface of each table 202 on the table 186 side. Therefore, when the ball screw 198 rotates through the drive shaft 189 and the coupling 190 under the drive action of the drive motor 188, the bearing block 200, the slide block 206, and the table 202 are moved to the horizontal position under the guide action of each slide rail 204. It can move in the direction.

  As described above, since the screw portion on the tip end side of the ball screw 198 is a reverse screw with respect to the screw portion on the base end portion side, when the ball screw 198 rotates, the screw portion on the right side of FIG. The table 202 and the left table 202 move so as to approach each other along the horizontal direction, or move so as to be separated from each other along the horizontal direction.

  Further, as shown in FIG. 3, a table 202 is arranged symmetrically about the rotor 10 and the rotation shaft 138, and a resin injection nozzle 126 is attached to each table 202. As described above, each table 202 can be moved so as to approach or separate from each other along the horizontal direction (left-right direction), so that the rotors 10 having different outer diameters are arranged at the positions shown in FIGS. Even if it does, it becomes possible to move each resin injection | pouring nozzle 126 to the predetermined position according to the rotor 10 from which the said outer diameter differs in a short time.

  That is, as shown in FIG. 3, the rotor manufacturing apparatus 60 employs two resin injection nozzles 126, and each resin injection nozzle 126 is arranged at a predetermined distance in the left-right direction. The moving mechanism 128 includes the following components symmetrically in order to support each resin injection nozzle 126.

  A support member 230 is attached to the upper end of the table 202, and a contact plate 226 is attached to the lower end. Support members 208 and 210 are mounted on the surface of the table 202 on the resin injection nozzle 126 side along the vertical direction, and these support members 208 and 210 support the ball screw 214 in the vertical direction. The ball screw 214 is a drive shaft of the drive motor 212, and the drive motor 212 is connected to the base end side (lower end side) of the ball screw 214. The drive motor 212 is mounted on a table 216 extending in the vertical direction.

  Here, the nut 232 is mounted on the upper surface of the support member 230 described above, and the cylindrical member 222 is mounted on the bottom surface. The rod 220 penetrates the cylindrical member 222, the support member 230, and the nut 232 in the vertical direction. A nut 224 is attached to the upper end portion of the rod 220, and the support member 234 is interposed at the lower end portion. A table 216 is attached. Further, a spring member 228 is mounted between the cylindrical member 222 and the support member 234 in the rod 220. Therefore, when the ball screw 214 rotates under the drive action of the drive motor 212, the table 216 can be raised and lowered within the range of the distance between the support member 210 and the contact plate 226.

  That is, as will be described later, when the resin 42 is injected into the plurality of storage holes 38 using the resin injection nozzle 126 while rotating the cradle 136, the resin injection nozzle moving mechanism 128 moves the table 164 as a whole. It is possible to adjust the position of the resin injection nozzle 126 in the vertical direction by raising and lowering only the portion of the table 216 instead of raising and lowering.

  Support members 234, 236, and 238 are sequentially disposed on the surface of the table 216 on the resin injection nozzle 126 side from the upper end portion toward the lower end portion, spaced apart from each other by a predetermined distance, and the support members 234, 236, and 238 provide resin. The injection nozzle 126 is supported in the vertical direction.

  The resin injection nozzle 126 includes a mixer part 240 connected to the resin supply path 242, a nozzle body 244 connected to the mixer part 240 and supported by support members 236 and 238, and a nozzle tip that is an injection part of the nozzle body 244 A portion 246, a resin reservoir 248 connected to the resin supply path 252, and a conduit 250 connecting the resin reservoir 248 and the mixer 240. The resin injection nozzle 126 is a nozzle that mixes two kinds of liquid resins and injects the mixed resin 42 (for example, silicone resin) from the nozzle tip portion 246 to the outside (injection into the accommodation hole 38 of the rotor 10). Specifically, one resin supplied from the resin supply path 242 to the mixer section 240 and the other resin supplied from the resin supply path 252 to the mixer section 240 via the resin storage section 248 and the pipe line 250 Are mixed in the mixer section 240, and the mixed resin 42 is injected from the hole 320 (see FIG. 7) of the nozzle body 244 to the outside through the hole 322 of the nozzle tip 246 (injected into the storage hole 38).

  As shown in FIG. 3, the conveyor 130 is arranged in the horizontal direction, and conveys the pallet 132 on which the rotor 10 is placed from the right direction to the left direction. In addition, the pallet 132 is opened at a portion corresponding to the cradle 136 to form an opening 133, while the top plate of the table 134 is slightly larger than the cradle 136 corresponding to the opening 133. A large opening 139 is formed. Further, a pin 324 (see FIG. 7) is formed on the upper surface of the receiving stand 136 so as to correspond to the collar 20 of the boss portion 14. In addition, in the location where the receiving stand 136 is arrange | positioned, since this receiving stand 136 raises / lowers under the drive effect | action of the receiving stand moving means 140, the conveyor 130 is not provided in this location (refer FIG. 3).

  Here, when the cradle 136 is retracted below the conveyor 130 and the rotating shaft 138 is advanced upward under the driving action of the cradle moving means 140, the cradle 136 opens the opening 133. By passing and rising, the collar 20 and the pin 324 are fitted, and the receiving plate 136 contacts the bottom surface of the boss portion 14. Thereby, the boss | hub part 14 (rotor 10) will be in the state mounted on the receiving stand 136 (refer FIG. 7). In this state, when the rotary shaft 138 is further moved upward under the driving action of the cradle moving means 140, the cradle 136 rises with the rotor 10 placed thereon and passes through the opening 139. Ascending to a predetermined position near the resin injection nozzles 126 and the claw members 144 and 146 above the table 134. Further, when the rotating shaft 138 is rotated under the driving action of the receiving table moving means 140, the receiving table 136 can rotate around the rotating shaft 138 with the rotor 10 mounted thereon. Further, when the rotary shaft 138 is retracted downward under the driving action of the cradle moving means 140, the cradle 136 is lowered with the rotor 10 placed thereon.

  As shown in FIG. 3, the claw member advancing / retreating means 148 is arranged on the table 134 symmetrically with respect to the predetermined position (position of the raised rotor 10), and is configured as follows.

  A rod 268 is fixed in a horizontal direction between support members 262 and 264 extending upward from the base 260, and a substantially L-shaped table 270 is attached to the rod 268 so as to be movable in the horizontal direction. A cylinder rod 274 of the cylinder 272 disposed on the table 270 is fixed to a support member 276 attached to the upper end portion of the support member 262 at the tip thereof. Further, as shown in FIG. 5, a pair of support members 280 are mounted on the table 270, and the table 278 is fixed in the vertical direction on the rotor 10 side of the table 270 and the support member 280 (see FIG. 3). .

  On the table 278, a pair of slide rails 282 are disposed along the vertical direction with a predetermined distance therebetween (see FIGS. 3, 5, and 6). Slide blocks 284 and 288 are arranged on each slide rail 282, and a table 286 is attached to each slide block 284 arranged on the upper side of each slide rail 282, while the lower side of each slide rail 282 is provided. A table 290 is attached to each of the slide blocks 288 arranged respectively.

  In this case, cylinders 292 are attached to both ends of the table 286, and the tip ends of the cylinder rods 294 extending downward from the cylinders 292 are fixed to the support member 296. A cylinder 298 is attached to the center of the table 290, and the tip of the cylinder rod 300 extending upward from each cylinder 298 is fixed to the support member 301.

  A claw member 144 is attached to the surface of the table 286 on the rotor 10 side, while a claw member 146 is attached to the surface of the table 290 on the rotor 10 side (see FIGS. 3 and 5). .

  The claw member 144 includes a claw portion 302 protruding from the table 286 toward the rotor 10, a support member 306 that supports the claw portion 302 from above, and a fixing member 307 for fixing the support member 306 to the table 286. Is done. As shown in FIG. 5, the claw portion 302 has a shape that tapers from the table 286 toward the rotor 10, and the tip portion 316 has an arc shape that follows the shape of the protruding portion 26 of the rotor 10. ing. The tip portion 316 is formed with two hole portions 304 spaced apart from each other by a predetermined distance (interval between the two injection holes 48). That is, each hole 304 is formed at the tip 316 corresponding to the position of the two injection holes 48 (see FIG. 5).

  On the other hand, the claw member 146 includes a claw portion 310 that protrudes from the table 290 toward the rotor 10, a support member 314 that supports the claw portion 310 from above, and a fixing member 308 that fixes the support member 314 to the table 290. (See FIGS. 3, 5 and 7). Like the claw portion 302, the claw portion 310 has a shape that tapers from the table 290 toward the rotor 10, and the tip portion 312 has an arc shape that follows the shape of the protruding portion 32 of the rotor 10. ing.

  When the cylinder rod 274 moves back and forth under the driving action of the cylinder 272, the table 270 moves in the horizontal direction (left and right direction in FIG. 3) within the distance between the support members 262 and 264 under the guiding action of the rod 268. To do. In this case, the claw member 144 is disposed on the table 270 via the table 278, the slide rail 282, the slide block 284, and the table 286, and at the same time, via the table 278, the slide rail 282, the slide block 288, and the table 290. Since the claw members 146 are disposed, the claw members 144 and 146 can move in the horizontal direction under the drive action of the cylinder 272, that is, can advance and retreat in the horizontal direction with respect to the rotor 10.

  When the cylinder rod 294 moves back and forth under the driving action of the cylinder 292, the table 286 moves up and down with respect to the table 290 under the guide action of the slide rail 282, while the cylinder 298 moves under the driving action of the cylinder 298. When the rod 300 advances and retracts, the table 290 moves up and down with respect to the table 286 under the guide action of the slide rail 282.

  In this case, since the claw member 144 is disposed on the table 286 and the claw member 146 is disposed on the table 290, the claw members 144 and 146 are moved in the vertical direction under the driving action of the cylinders 292 and 298. , That is, it can advance and retreat in the vertical direction with respect to the rotor 10.

  Therefore, when the claw members 144 and 146 are advanced with respect to the rotor 10 under the driving action of the cylinders 272, 292, and 298, as shown in FIGS. 144, the protrusion 32 of the rotor 10 and the tip 312 of the claw member 146 are in contact with each other, and each hole 304 of the claw member 144 is substantially in the injection hole 48 of the upper holding plate 34. The upper holding plate 34, the rotor core 12, and the lower holding plate 36 are gripped in the vertical direction by the claw members 144 and 146 (closed in the vertical direction by the claw members 144 and 146). On the other hand, when the claw members 144, 146 are separated from the rotor 10 under the driving action of the cylinders 272, 292, 298, the gripping state of the upper holding plate 34, the rotor core 12 and the lower holding plate 36 by the claw members 144, 146 is as follows. The claw members 144 and 146 are opened in the vertical direction with respect to the rotor core 12.

  Then, with the upper holding plate 34, the rotor core 12 and the lower holding plate 36 held in the vertical direction by the claw members 144, 146, the resin injection nozzle 126 is moved to the rotor under the driving action of the driving motors 152, 170, 188, 212. 10, the nozzle tip 246 is inserted into the hole 304, and the nozzle tip 246 is placed on the upper holding plate in a state where the hole 322 of the nozzle tip 246 and the injection hole 48 are substantially coaxial. 34 (see FIG. 7). Accordingly, when a predetermined amount of resin 42 is injected from the hole 322 of the resin injection nozzle 126 into the storage hole 38 through the injection hole 48, the storage hole 38 is filled with the resin 42.

  Next, the high frequency heating apparatus 330 will be described with reference to FIG.

  The high-frequency heating device 330 includes a high-frequency heating coil (heating means) 332 arranged around the rotor 10 filled with the resin 42, a receiving base 336 having the same configuration as the receiving stand 136, the rotating shaft 138, and the pin 324 described above. A rotation shaft 334 and a pin 338 are included.

  The high-frequency heating device 330 fits the pin 338 and the collar 20 and places the rotor 10 on the pedestal 336, and heats the rotor 10 by applying high-frequency current to the high-frequency heating coil 332 so that the resin 42 is heated. Harden.

  The high-frequency heating device 330 may be disposed on the center axis of the cradle moving unit 140 and the rotating shaft 138, for example, between the conveyor 130 and the claw member advancing / retreating unit 148. Then, the moving distance of the rotor 10 is shortened, and the time from the injection of the resin 42 to the curing can be shortened.

  Next, the volume calculation mechanism 100 will be described with reference to FIG.

  The volume calculation mechanism 100 includes an air leak tester (volume calculation means) 62 as an air volume tester, a volume master 64, and a volume measurement nozzle 66. In this case, the rotor 10 is placed on the cradle 136, and a pin 324 protruding upward from the cradle 136 is inserted into one collar 20. Therefore, the rotor 10 is positioned and fixed on the cradle 136.

  The volume measuring nozzle 66 includes a cylindrical nozzle body 76, a packing 80 attached to the distal end side of the nozzle body 76, a pressing member 82 disposed on the proximal end side of the nozzle body 76, and the pressing member. 82 and a spring member 84 mounted between the projecting portions 86 formed in the radial direction of the nozzle body 76, a pressing member 88 disposed on the distal end side of the nozzle body 76, and the pressing members 82, 88. With two screws 90 mounted therebetween.

  Here, when the volume of the storage hole 38 is measured by the volume calculation mechanism 100, first, the air passage hole 78 of the nozzle body 76 connected to the air leak tester 62 and one injection hole 48 are substantially coaxial. As described above, after positioning the volume measuring nozzle 66 with respect to the hole 304 formed in the tip 316 of the claw 302 and the injection hole 48 of the upper holding plate 34, the pressing member 82 is moved downward by a driving mechanism (not shown). Press.

  In this case, since the tip side of the two screws 90 is screwed to the pressing member 88, when the pressing member 82 moves downward along the screw 90, the nozzle body 76 is pressed via the spring member 84, Between the tip of the nozzle body 76 and the upper surface of the upper holding plate 34, air leakage to the outside is reliably prevented by the packing 80.

  In this state, the air leak tester 62 injects air into the storage hole 38 through the air passage hole 78 and the injection hole 48 and also injects the air into the volume master 64, and uses a differential pressure sensor (not shown), A pressure difference between the air injected into the storage hole 38 and the air injected into the volume master 64 is detected, and the storage hole in which the magnet 40 is stored based on the detected pressure difference (pressure change in the storage hole 38). The volume of the space in 38 is obtained.

  The manufacturing process of the rotor 10 in the rotor manufacturing apparatus 60 configured as described above will be described with reference to FIGS.

  FIG. 9 is a flowchart showing the manufacturing process of the rotor 10.

  First, in step S1, the rotor core 12 is formed. The rotor core 12 is formed by, for example, cutting a hollow thin plate from a plate member (for example, a silicon steel plate) by pressing, and laminating the cut thin plates one by one to form the rotor core 12. Of course, in the press working, it is desirable to also process the portions that become the storage holes 38 and the recesses 44 and 50.

  Next, in step S <b> 2, after the lower holding plate 36 is disposed on the protruding portion 32 of the boss portion 14, the thin steel plate 28 is press-fitted on the outer peripheral side of the boss portion 14 above the lower holding plate 36, and the thin steel plate 28 is moved. The boss 14 is held. Thereafter, the magnet 40 is stored in the storage hole 38, and the upper holding plate 34 is press-fitted into the outer peripheral side of the boss portion 14 in a state where the magnet 40 is stored, and the thin steel plate 28 is held on the boss portion 14.

  Next, in step S3, the volume (capacity) of the space in the storage hole 38 formed by the upper holding plate 34, the holding hole 38, the magnet 40 and the lower holding plate 36 is calculated.

  In this case, the volume measuring nozzle 66 is aligned with the upper holding plate 34 so that the air passage hole 78 of the nozzle body 76 connected to the air leak tester 62 and one injection hole 48 are substantially coaxial. Thereafter, the volume measuring nozzle 66 is pressed against the upper surface of the upper holding plate 34 (see FIG. 14).

  In this state, air of a predetermined pressure is injected from the air leak tester 62 into the storage hole 38 through the air passage hole 78 and the injection hole 48 and air of the same pressure is injected into the volume master 64. Then, using a differential pressure sensor, a pressure difference between the air injected into the storage hole 38 and the air injected into the volume master 64 is detected, and based on the detected pressure difference (pressure change in the storage hole 38). Thus, the volume of the space in the storage hole 38 in which the magnet 40 is stored is obtained.

  When the above calculation processing for one storage hole 38 is completed, the volume calculation mechanism 100 releases the pressure on the pressing member 82 after performing air bleeding on the storage hole 38. Thereby, the volume measuring nozzle 66 can be separated from the rotor core 12.

  Since 24 injection holes 48 are formed in the upper holding plate 34, the volume calculation mechanism 100 executes the process of step S3 on each injection hole 48. In this case, by rotating the cradle 136 about the rotation shaft 138 under the driving action of the cradle moving means 140, the processing of step S3 described above can be performed for each injection hole 48.

  Next, in step S <b> 4, the resin injection device 120 supplies a predetermined amount (the same amount as the volume) of the resin 42 in the storage hole 38 from the resin injection nozzle 126 to the storage hole 38 through the injection hole 48. The resin 42 is filled into the accommodation hole 38.

  10A to 13 are main part configuration diagrams or main part cross-sectional views for explaining the operation of the resin injection device 120 in step S4. 10A to 13, the illustration of the detailed configuration of the resin injection nozzle moving mechanism 128 and the claw member advancing / retreating means 148 is omitted for ease of explanation.

  First, when the pallet 132 on which the rotor 10 is placed is conveyed by the conveyor 130 from the right side of FIG. 10A to above the pedestal moving means 140, the pedestal moving means 140 advances the rotating shaft 138 upward. Let As a result, the cradle 136 passes through the conveyor 130 and the opening 133, so that the collar 20 and the pin 324 are fitted, and the cradle 136 contacts the bottom surface of the boss part 14. Thereby, the boss | hub part 14 (rotor 10) will be in the state mounted on the receiving stand 136 (acceptance).

  In this state, when the cradle moving means 140 advances the rotating shaft 138 further upward, the cradle 136 rises with the rotor 10 placed thereon, passes through the opening 139, and is above the table 134. Each resin injection nozzle 126 and the claw members 144 and 146 are raised to predetermined positions in the vicinity (see FIG. 10B).

  Next, the claw members 144 and 146 are advanced under the driving action of the cylinders 272, 292, and 298 with respect to the rotor 10 raised to the predetermined position. The protrusion part 26 of the rotor 10 and the tip part 316 of the claw member 144 are in contact with each other, the protrusion part 32 of the rotor 10 and the tip part 312 of the claw member 146 are in contact, and each hole part 304 of the claw member 144 is further in contact with each other. By being substantially coaxial with the injection hole 48 of the upper holding plate 34, the upper holding plate 34, the rotor core 12 and the lower holding plate 36 are gripped in the vertical direction by the claw members 144 and 146. That is, the upper holding plate 34, the rotor core 12 and the lower holding plate 36 are closed in the vertical direction by the claw members 144 and 146 (see FIG. 11A).

  In this state, the resin injection nozzle 126 is advanced (lowered) to the rotor 10 under the driving action of the drive motors 152, 170, 188 and 212, and the nozzle tip 246 is inserted into the hole 304. As a result, the hole 322 of the nozzle tip 246 and the injection hole 48 are substantially coaxial, and the nozzle tip 246 comes into contact with the upper holding plate 34 (see FIG. 11B).

  Next, a predetermined amount of resin 42 corresponding to the volume of the space of the storage hole 38 in which the magnet 40 is stored is injected from the hole 322 of the resin injection nozzle 126 into the storage hole 38 through the injection hole 48. 38 is filled with the resin 42.

  After the resin 42 is filled, the resin injection nozzle 126 is raised (withdrawn from the rotor 10) under the drive action of the drive motors 152, 170, 188, 212 (see FIG. 12A). Then, the claw members 144 and 146 are separated from the rotor 10 under the driving action of the cylinders 272, 292 and 298. Accordingly, the gripping state of the upper holding plate 34, the rotor core 12 and the lower holding plate 36 by the claw members 144 and 146 is released, and the claw members 144 and 146 are released from the upper holding plate 34, the rotor core 12 and the lower holding plate 36. Open up and down (see FIG. 12B).

  As described above, the process of filling the resin 42 into the two storage holes 38 through the two injection holes 48 is completed. However, 24 injection holes 48 are formed in the upper holding plate 34 of the rotor 10, and these injections are performed. Twenty-four storage holes 38 are formed in the rotor core 12 corresponding to the holes 48.

  Therefore, in the state shown in FIG. 13, the resin injection device 120 includes an injection hole 48 that communicates with the storage hole 38 and a resin injection nozzle so that the resin 42 is injected into the storage hole 38 into which the resin 42 has not yet been injected. The rotating shaft 138 and the cradle 136 are rotated by the cradle moving means 140 so as to face 126. Accordingly, the resin 42 can be injected into the storage hole 38 into which the resin 42 has not been injected by the above-described operation, and therefore the resin 42 can be injected into all of the storage holes 38. Become.

  When the filling of the resin 42 into all the storage holes 38 is completed, the cradle moving means 140 moves the rotor 10, the cradle 136 and the rotation from the predetermined position shown in FIGS. 10B to 13 to the position shown in FIG. 10A. The shaft 138 is retracted downward. Thus, the rotor 10 that has been filled with the resin 42 is placed on the pallet 132, and the pallet 132 on which the rotor 10 is placed can be transported to the next step under the transporting action of the conveyor 130.

  Next, in step S <b> 5, the high-frequency heating device 330 is in a state where the pin 338 and the collar 20 are fitted to the rotor 10 filled with the resin 42 and the rotor 10 is placed on the cradle 336. The rotor 10 is heated by energizing the high frequency heating coil 332 with high frequency. Thereby, the resin 42 is hardened and the rotor 10 is manufactured.

  As described above, according to the rotor manufacturing apparatus 60 according to the present embodiment, the cradle moving unit 140 first raises the cradle 136 to the position of the boss portion 14 of the rotor 10 placed on the pallet 132. Let When the rotor 10 is placed on the cradle 136, the cradle moving means 140 moves the cradle 136 to a predetermined position above the table 134. When the cradle 136 reaches the predetermined position, the claw member advancing / retreating means 148 advances the pair of claw members 144 and 146 with respect to the rotor 10 so that the hole 304 and the injection hole 48 of the claw member 144 are substantially omitted. Positioning is performed so as to be coaxial, and in a state where the positioning is completed (a state where the hole 304 and the injection hole 48 are substantially coaxial), the upper holding plate 34 and the rotor core 12 by the pair of claw members 144 and 146. Then, the lower holding plate 36 is gripped. Thereafter, the nozzle tip 246 of the resin injection nozzle 126 is inserted into the hole 304, and the resin 42 is injected from the nozzle tip 246 into the storage hole 38 through the injection hole 48.

  Therefore, when the cradle 136 is moved to the predetermined position, the upper holding plate 34, the rotor core 12 and the lower holding plate 36 are gripped by the pair of claw members 144 and 146, and in this state, the resin 42 is placed in the storage hole 38. Is injected. As a result, it is possible to shorten the time required for moving the rotor 10 placed on the pallet 132 to the predetermined position and injecting the resin 42 into the storage hole 38. Can be greatly improved.

  Further, since it is not necessary to press and hold the rotor 10 (rotor core 12) placed on the pallet 132, the pallet 132 and the conveyor 130 can be reduced in weight, and as a result, the rotor manufacturing apparatus 60 production facilities can be simplified.

  Further, since the pair of claw members 144 and 146 are arranged symmetrically about the rotor 10 (boss portion 14) and the rotation shaft 138, the entire rotor core 12 can be pressed and held substantially uniformly. Can be gripped with a good balance.

  Further, the volume (capacity) of the space in the storage hole 38 in which the magnet 40 is stored is measured in advance by the volume calculation mechanism 100, and an amount of resin 42 corresponding to the measured volume is stored in the storage hole 38 by the resin injection device 120. It is possible to reliably prevent the injection amount of the resin 42 from being insufficient or the resin 42 from leaking out of the rotor core 12.

  Further, since the cradle 136 and the rotating shaft 138 can be rotated by the cradle moving means 140, a plurality of storage holes 38 are formed in the rotor core 12 and a plurality of injection holes 48 are formed in the upper holding plate 34. Even so, the resin 42 can be efficiently filled into the storage holes 38. Further, since the cradle 136 can be rotated, the alignment between the hole 304 and each injection hole 48 becomes easier.

  Furthermore, the claw member advancing / retreating means 148 can advance and retract the pair of claw members 144 and 146 in the radial direction (horizontal direction) of the rotor 10 and advance and retract in the axial direction (vertical direction). 146 easily sets and releases the holding state of the upper holding plate 34, the rotor core 12 and the lower holding plate 36 (opening and closing of the pair of claw members 144 and 146 with respect to the upper holding plate 34, the rotor core 12 and the lower holding plate 36). be able to. In addition, the positioning of the hole 304 and the injection hole 48, the storage hole 38, and the injection are performed by the advance and retreat in the radial direction and the axial direction by the pair of claw members 144 and 146, and the raising and lowering and rotation of the cradle 136. The resin 42 can be injected efficiently when a plurality of holes 48 are formed.

  Moreover, the rotor 10 can be manufactured in a short time by heating the rotor 10 in which the housing hole 38 is filled with the resin 42 by the high-frequency heating device 330 and curing the resin 42.

  The present embodiment is not limited to the above description, and can be changed to various configurations. For example, as shown in FIG. 14, the claw member 144 in which the hole 304 is formed among the pair of claw members 144 and 146 is used as a claw member into which the nozzle tip 246 of the resin injection nozzle 126 is inserted, and the other pair of claw members 144 and 146 is inserted. Of the claw members 144 and 146, the hole 304 of the claw member 144 may be a hole through which the volume measuring nozzle 66 is inserted. This makes it possible to continuously measure the volume of the space in the storage hole 38 in which the magnet 40 is stored and inject the resin 42 at the predetermined position, thereby further improving the production efficiency of the rotor 10. Can be improved.

  In addition, this invention is not limited to said embodiment, Of course, various structures can be taken, without deviating from the summary of this invention.

It is a perspective view of the rotor manufactured by the rotor manufacturing apparatus which concerns on this embodiment. It is a top view of the rotor of FIG. It is a front view of the resin injection apparatus which comprises a rotor manufacturing apparatus. It is a side view of the resin injection apparatus of FIG. It is a principal part top view which shows the nail | claw member advance / retreat means and claw member of the resin injection apparatus of FIG.3 and FIG.4. It is a schematic block diagram which shows the structure of a part of nail | claw member advance / retreat means of FIG. It is sectional drawing which shows the holding state of the rotor core by a nail | claw member. It is a schematic sectional drawing of the high frequency heating apparatus which comprises a rotor manufacturing apparatus. It is a flowchart which shows the manufacturing process of the rotor by the rotor manufacturing apparatus which concerns on this embodiment. FIG. 10A is a configuration diagram of a main part of the resin injection device showing a state before the rotor is placed on the cradle, and FIG. 10B is raised to a predetermined position in a state where the rotor is placed on the cradle. It is a principal part block diagram of the resin injection apparatus which shows a state. FIG. 11A is a main part configuration diagram of the resin injection apparatus showing a state where the rotor is gripped by a pair of claw members, and FIG. 11B is a main part configuration diagram of the resin injection apparatus showing a state where the resin injection nozzle is lowered. is there. 12A is a main part configuration diagram of the resin injection device showing a state where the resin injection nozzle is raised, and FIG. 12B is a main part configuration diagram of the resin injection device showing release of the gripping state of the rotor by a pair of claw members. is there. It is a principal part block diagram of the resin injection apparatus which shows rotation of the rotor in the state by which the holding state of the rotor by a pair of nail | claw member was cancelled | released. It is sectional drawing which shows the state which incorporated the volume measuring nozzle in the resin injection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Rotor 12 ... Rotor core 14 ... Boss part 28 ... Thin steel plate 32 ... Protruding part 34 ... Upper restraint plate 36 ... Lower restraint plate 38 ... Storage hole 40 ... Magnet 42 ... Resin 48 ... Injection hole 50 ... Concave 60 ... Rotor manufacturing apparatus 62 ... Air leak tester 64 ... Volume master 66 ... Volume measurement nozzle 100 ... Volume calculation mechanism 120 ... Resin injection device 128 ... Resin injection nozzle moving mechanism 130 ... Conveyor 132 ... Pallet 133, 139 ... Openings 136, 336 ... Receiving base 138, 334: Rotating shaft 140: Receiving means moving means 144, 146 ... Claw member 148 ... Claw member advancing / retreating means 244 ... Nozzle body 246 ... Nozzle tip 302, 310 ... Claw 304 ... Holes 312, 316 ... Tip 322 ... Hole 324, 338 ... Pin 330 ... High frequency heating device 332 ... High frequency heating coil

Claims (7)

A magnet, a ring-shaped yoke having a storage hole for storing the magnet, a rotating shaft disposed on the inner diameter side of the yoke, and end plates disposed on both end surfaces of the yoke in the axial direction; In a rotor manufacturing apparatus for injecting resin into the storage hole in which the magnet is stored through an injection hole formed in the end face plate,
A pallet on which the rotor is mounted and a portion corresponding to the rotation shaft is opened to be an opening;
A transport mechanism for transporting the pallet;
A cradle for mounting the rotor by receiving the rotating shaft of the rotor;
The rotor is placed on the cradle by moving the cradle to the position of the rotating shaft of the rotor placed on the pallet through the opening, and the rotor is further placed. A pedestal moving means for moving the pedestal made to a predetermined position along the axial direction;
A pair of claw members that sandwich the yoke in the axial direction, and of the pair of claw members, a pair of claw members having a hole formed in one claw member;
Claw member advancing and retracting means for advancing the pair of claw members to the rotor moved to the predetermined position so that the hole and the injection hole are substantially coaxial, and gripping the yoke;
The hole and the injection hole are substantially coaxial, and are inserted into the hole while the yoke is gripped by the pair of claw members, and the storage hole in which the magnet is stored through the injection hole. A resin injection nozzle for injecting the resin;
A rotor manufacturing apparatus comprising: The rotor manufacturing apparatus according to claim 1,
The rotor manufacturing apparatus, further comprising: another pair of claw members disposed in an axially symmetrical position with respect to the pair of claw members around the rotation axis. The rotor manufacturing apparatus according to claim 2,
A capacity measuring nozzle for injecting air into the storage hole in which the magnet is stored through the injection hole;
The capacity in the storage hole in which the magnet is stored is measured based on the air injected into the storage hole, and the capacity of the space in the storage hole in which the magnet is stored is calculated based on the measured capacity. Capacity calculation means to perform,
A rotor manufacturing apparatus, further comprising: The rotor manufacturing apparatus according to claim 3, wherein
Of the pair of claw members, the claw member formed with the hole is a claw member through which the resin injection nozzle is inserted,
Of the other pair of claw members, the claw member corresponding to the claw member in which the hole is formed has another hole through which the capacity measuring nozzle is inserted. apparatus. In the rotor manufacturing apparatus according to any one of claims 1 to 4,
When the plurality of storage holes are formed in the yoke and the plurality of injection holes are formed in the end face plate,
The said cradle moving means is comprised so that rotation of the said cradle is possible. The rotor manufacturing apparatus characterized by the above-mentioned. In the rotor manufacturing apparatus according to any one of claims 1 to 5,
The claw member advancing / retreating means causes the pair of claw members to advance / retreat in the radial direction of the yoke and advance / retreat in the axial direction. In the rotor manufacturing apparatus of any one of Claims 1-6,
A rotor manufacturing apparatus, further comprising a heating unit disposed around the yoke in which the housing hole is filled with the resin and configured to heat and cure the filled resin.

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