JP5983148B2 - Magnet laminate manufacturing method and magnet lamination system - Google Patents

Description

  The present invention relates to a method for manufacturing a magnet laminate and a magnet lamination system.

  As an embedded internal magnet synchronous motor (IPM motor) used for a drive motor of an electric vehicle or the like, a plurality of divided magnet pieces are stacked and embedded in a rotor core, for example, disclosed in Patent Document 1 Some of them have a configuration as described above. The magnet piece has a large dimensional variation if it is a raw material that has just undergone processes such as sintering and forging. For this reason, machining is performed on the surface of the magnet piece.

JP 11-252833 A

  However, since the machining is performed on all of the plurality of magnet pieces, the yield is poor, and thus the cost increases. On the other hand, the yield can be expected to be improved by laminating magnet pieces without machining or magnet pieces subjected only to roughing, but the dimensional variation is large. Therefore, when magnet pieces are stacked randomly, the dimensional error is unevenly accumulated, or gaps are generated between the magnet pieces, increasing the height of the magnet stack, and as a result, the magnet pieces are separated from the rotor core without satisfying the height tolerance. There is a risk of protruding.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a method for manufacturing a magnet laminate and a magnet lamination system capable of improving the yield and preventing the magnet pieces from protruding from the rotor core. And

  In order to achieve the above object, the magnet laminate manufacturing method of the present invention is the height direction in which the magnet pieces are aligned when stacked on other magnet pieces for one magnetized piece before being laminated. A detecting step of detecting the size in the height direction at both end portions separated in a direction orthogonal to the vertical direction. Moreover, the manufacturing method of the magnet laminated body of this invention has a lamination process which laminates | stacks one magnet piece on at least one other unmagnetized magnet piece after a detection process. In the laminating step, one end portion having a small size in the height direction detected in the detecting step among the both end portions of one magnet piece is a height in the at least one other unmagnetized magnet piece. It arrange | positions on the edge part with a big magnitude | size of the height direction among the both ends spaced apart in the direction orthogonal to a direction. Further, in the stacking step, the other end portion having a large size in the height direction detected in the detection step among the both end portions of the one magnet piece is the at least one other unmagnetized magnet piece. It arrange | positions on an edge part with a small magnitude | size of a height direction among both ends.

  In order to achieve the above object, the magnet lamination system of the present invention has a lamination apparatus for laminating one unmagnetized magnet piece on at least one other unmagnetized magnet piece. The magnet laminating system of the present invention has both ends that are separated in the direction perpendicular to the height direction in which the magnet pieces are aligned when stacked on other magnet pieces with respect to one magnet piece before being laminated. And a detector for detecting the size in the height direction. The magnet lamination system of the present invention has a control unit that is electrically connected to the lamination device and the detection unit. When the control unit controls the operation of the laminating apparatus, one end portion of the one magnet piece having a small height in the height direction detected by the detecting unit is set to the at least one other unfinished portion. It arrange | positions on the edge part with a large magnitude | size of the height direction among the both ends spaced apart in the direction orthogonal to a height direction in the magnetized magnet piece. The other end of the one magnet piece having a large height in the height direction detected by the detector is the other end of the at least one other unmagnetized magnet piece. , Arranged in the height direction on the small end portion.

  According to the magnet laminate manufacturing method and the magnet lamination system as described above, the magnet pieces are laminated while the arrangement of both end portions separated in the direction perpendicular to the height direction in which the magnet pieces are laminated and arranged is adjusted. . For this reason, it is prevented that the dimensional error is largely deviated and accumulated on one side of both ends, and a gap is generated between the magnet pieces, and as a result, an increase in the stacking height of the magnet pieces is suppressed. Is done. As described above, according to the present invention, it is possible to suppress an increase in the stacking height regardless of the machining of the magnet pieces. Therefore, the present invention can improve the yield and prevent the magnet pieces from protruding from the rotor core.

It is a figure showing a schematic structure of a magnet lamination system of an embodiment. It is the arrow view seen from the arrow II of FIG. It is a figure which shows a mode when a picking robot laminates | stacks a magnet piece. It is a perspective view of a magnet piece. It is a flowchart of the manufacturing method of the magnet laminated body of embodiment. It is a figure which shows a mode that a magnet piece is laminated | stacked. It is a figure which shows a mode that a magnet piece is laminated | stacked. It is a figure which shows a mode when a picking robot adjusts direction of a magnet piece. It is the arrow view seen from the arrow IX of FIG. It is a figure which shows a mode when a picking robot adjusts direction of a magnet piece. It is a figure which shows a mode when a picking robot adjusts direction of a magnet piece. It is a figure which shows the mode at the time of apply | coating an adhesive agent to a magnet piece. It is a figure which shows a mode that the laminated | stacked magnet piece is pressed by a punch. It is a figure which shows the magnet laminated body to which the adhesive agent was apply | coated. It is a figure which shows a mode when a magnet laminated body is inserted in the slot of a rotor core. It is the arrow view seen from the arrow XVI of FIG. It is a figure which shows a mode when the edge part of a magnet laminated body is ground.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the dimension ratio of drawing is exaggerated on account of description, and differs from an actual ratio.

  As shown in FIGS. 1 and 2, the rotor core magnet lamination system 100 according to the embodiment includes a picking robot 110 (lamination device) for laminating unmagnetized magnet pieces 10 and cameras 120 and 121 (for imaging the magnet pieces 10). And a control unit 130 that is electrically connected to the picking robot 110 and the cameras 120 and 121.

  The rotor core magnet lamination system 100 includes a nozzle 140 (adhesive discharge part) that discharges an adhesive, a punch 150 (pressing part) that presses the laminated magnet pieces 10, and a heater 160 that heats the laminated magnet pieces 10. (Heating part). The rotor core magnet lamination system 100 includes a disk grindstone 170 (processing unit) for grinding the laminated magnet pieces 10.

  The nozzle 140 is connected to, for example, a pressure feed pump that supplies an adhesive. The punch 150 is connected to an urging means such as a hydraulic cylinder. The heater 160 heats the laminated magnet pieces 10 by blowing hot air or irradiating infrared rays, for example.

  The picking robot 110 includes a suction cup 112 to which the magnet piece 10 can be attached and detached, and a robot arm 111 provided with the suction cup 112 at the tip. The camera 120 is provided at the tip of the robot arm 111. The picking robot 110 moves the robot arm 111 and presses the suction cup 112 against the unmagnetized magnet piece 10 conveyed by the belt conveyor 190. The suction cup 112 attracts the magnet piece 10.

  As shown in FIG. 3, the picking robot 110 moves the robot arm 111 and conveys the magnet piece 10 attracted to the container 180 that can accommodate the magnet piece 10. The picking robot 110 releases the magnet piece 10 by releasing the adsorption of the magnet piece 10 on the container 180. The magnet piece 10 detached from the suction cup 112 is accommodated in the container 180 and laminated. The container 180 is preferably made of metal.

  The control unit 130 controls the movement of the robot arm 111 and the attachment / detachment of the magnet piece 10 by the suction cup 112. The control unit 130 controls the suction cup 112 by controlling, for example, a vacuum pump that makes a negative pressure between the magnet piece 10 and the suction cup 112 and an open valve that opens a negative pressure state between the magnet piece 10 and the suction cup 112. The attachment / detachment of the magnet piece 10 is controlled. The control unit 130 processes images captured by the cameras 120 and 121. The control unit 130 is a computer such as a personal computer or an engineering workstation.

  As shown in FIG. 4, the magnet piece 10 has a thin shape. The cross section of the magnet piece 10 orthogonal to the thickness direction has a substantially rectangular shape. The dimensions L1 and L2 in the direction perpendicular to the thickness direction (sizes in the height direction of both end portions) at the end portions 11 and 12 constituting the short side of the substantially rectangular cross section are different from each other due to a dimensional error. The magnet piece 10 has a warp. Due to the warp of the magnet piece 10, the end 13 constituting the long side of the substantially rectangular cross section orthogonal to the thickness direction is gently curved.

  Next, the manufacturing method of the rotor core magnet laminated body of embodiment is described.

  As shown in FIG. 5, the rotor core magnet laminate manufacturing method according to the embodiment includes a sintering step of sintering magnetic powder, and each magnet piece 10 is formed from the sintered material after the sintering step. A magnet piece forming step.

  The manufacturing method of the rotor core magnet laminate includes a detection step of detecting the dimensions L1 and L2 of the magnet piece 10 after the magnet piece forming step, and a lamination step of laminating the magnet pieces 10 based on the detection result after the detection step. Have. After a predetermined number of magnet pieces 10 are laminated by repeating the detection step and the lamination step, the method of manufacturing the rotor core magnet laminate includes an adhesion step of bonding the laminated magnet pieces 10 together.

  A magnet laminate in which the magnet pieces 10 are laminated is produced by laminating the magnet pieces 10 by repeating the detection process and the laminating process and bonding the magnet pieces 10 by the bonding process. After a predetermined number of magnet laminates are produced by repeating these steps, the method for manufacturing a rotor core magnet laminate has a processing step of machining the magnet laminate.

  In the sintering step, a powder obtained by compacting a magnetic material such as iron oxide or rare earth is sintered in a vacuum sintering furnace at a predetermined temperature for a predetermined time. In the magnet piece forming step, each magnet piece 10 is formed by dividing the sintered material and performing processing for obtaining dimensional accuracy. The sintered material is divided by, for example, cutting using a tool with a diamond tip attached to the outer periphery of a super steel disk, or cracking by applying a force to a groove formed on the surface of the sintered material. Is done. For example, the dimensional accuracy of the magnet piece 10 may be determined by subjecting the divided material to mechanical processing such as grinding or sizing that is pressurized by a mold. Each formed magnet piece 10 is conveyed to the picking robot 110 by the belt conveyor 190.

  Further, the magnet piece 10 obtained by dividing the sintered material may be transported to the picking robot 110 without performing machining or sizing for obtaining dimensional accuracy. Alternatively, for example, the magnet piece 10 that has been subjected to the minimum roughing such as obtaining dimensional accuracy only on a part of the divided material may be transported to the picking robot 110.

  In the detection step, the camera 120 images the magnet piece 10 placed on the belt conveyor 190 from the thickness direction. The control unit 130 calculates the dimensions L1 and L2 from the image of the magnet piece 10 taken by the camera 120. The control unit 130 discriminates the size of the calculated dimensions L1 and L2 of each magnet piece 10 and stores the dimensions L1 and L2.

  In the detection step, the camera 121 images the magnet piece 10 from the direction facing the end 13. The control unit 130 calculates the direction of warping of the magnet piece 10 from the image captured by the camera 121. The cameras 120 and 121 and the control unit 130 constitute a detection unit that detects the dimensions L1 and L2 of the end portions 11 and 12 of the magnet piece 10 and the direction of warping of the magnet piece 10.

  As shown in FIGS. 6 and 7, in the laminating process, the magnet pieces 10 are arranged such that the end portions 13 overlap and the end portions 11 and 12 of one magnet piece 10 are above the end portions 11 and 12 of the other magnet piece 10. It is laminated so that it may be arranged.

  As shown in FIG. 6, when one magnet piece 10 is already accommodated in the container 180, the end portion 11 having a small dimension L1 among the both end portions 11 and 12 of one magnet piece 10 to be laminated is , One end of the other magnet piece 10 in the container 180 is disposed on the end 12 having a large dimension L2.

  Of the two end portions 11 and 12 of one magnet piece 10 to be laminated, the end portion 12 having the large dimension L2 is the same as the other end portions 11 and 12 of one other magnet piece 10 in the container 180. Located on the end 11 having a small dimension L1.

  As shown in FIG. 7, when a plurality of magnet pieces 10 are already laminated in the container 180, the end portion 11 having a small dimension L <b> 1 among both end portions 11 and 12 of one magnet piece 10 to be laminated from now on. Are arranged on the end portion 15 having a large dimension in the height direction among the both end portions 15 and 16 separated in the direction orthogonal to the height direction in the magnet laminated body 14 in which the plurality of magnet pieces 10 are laminated. The height direction is a direction in which the laminated magnet pieces 10 are arranged.

  In addition, among the both end portions 11 and 12 of one magnet piece 10 to be stacked, the end portion 12 having a large dimension L2 has a small size in the height direction among the both end portions 15 and 16 in the magnet laminate 14. Located on the end 16.

  Based on the detected dimensions L1 and L2 of the end portions 11 and 12 of the magnet piece 10, the control unit 130 is configured so that the magnet pieces 10 are stacked with the arrangement of the end portions 11 and 12 as described above. Control movement.

  For example, as shown in FIG. 8, in order to change the positions of the end portions 11 and 12 so as to achieve the above arrangement, the control unit 130 controls the picking robot 110 to rotate the magnet piece 10 by 180 °. The position where the magnet piece 10 is rotated 180 ° is not particularly limited, and may be on the belt conveyor 190 as shown in FIG. 8 or on the container 180.

  The control unit 130 stores the arrangement of both end portions 11 and 12 of the laminated magnet pieces 10. The controller 130 adds the dimensions L1 and L2 of the end portions 11 and 12 of the magnet piece 10 to the both end portions 15 and 16 of the magnet laminate 14, respectively, thereby obtaining the dimension L3 in the height direction of the end portion 15 and A dimension L4 in the height direction of the end portion 16 is calculated. The control unit 130 compares the dimensions L3 and L4 of the both end portions 15 and 16 and determines the size of these.

  Unlike the present embodiment, for example, a conventionally known distance measuring sensor using light has the dimensions L1 and L2 of both end portions 11 and 12 of one magnet piece 10 in the container 180, or both end portions 15 of the magnet laminate 14. Sixteen dimensions L3 and L4 may be measured. In this case, the distance measuring sensor emits light from above the container 180 toward both end portions 11 and 12 of the magnet piece 10 or both end portions 15 and 16 of the magnet laminate 14, and receives light reflected therefrom. .

  As shown in FIG. 9, in the stacking step, the direction of warping of the magnet pieces 10 to be stacked is aligned with the direction of warping of the magnet pieces 10 in the container 180. The warping direction is a direction in which the end 13 having a curved shape protrudes (or dents) in a plan view as viewed from the direction facing the end 13 of the magnet piece 10 as shown in FIG. The control unit 130 controls the movement of the picking robot 110 based on the detected warping direction of the magnet pieces 10 so that the warping directions are aligned and the magnet pieces 10 are stacked.

  For example, as shown in FIGS. 10 and 11, the control unit 130 controls the movement of the robot arm 111 in order to align the direction of warping of the magnet pieces 10 to be laminated with the direction of warping of the magnet pieces 10 in the container 180. To reverse the direction of warping.

  As shown in FIG. 12, in the laminating process, the adhesive 17 is applied to the magnet piece 10 in the container 180 by the nozzle 140. The adhesive 17 is applied to the end 13 of the magnet piece 10 (the surface on which the magnet pieces overlap). The adhesive 17 preferably has an insulating property. A conventionally known adhesive 17 can be used.

  When a predetermined number of magnet pieces 10 are stacked, the control unit 130 stops the stacking operation of the picking robot 110. The control unit 130 stores the number of magnet pieces 10 stacked. The operator moves the container 180 in which the magnet laminated body 14 is stored below the punch 150.

  As shown in FIG. 13, in the bonding step, the heater 160 heats the magnet laminate 14 from the outside of the container 180 while the punch 150 presses the magnet laminate 14 from the height direction. The temperature of the container 180 when heated is 180 ° C., for example. The adhesive 17 is welded to the magnet pieces 10 to bond the magnet pieces 10 together.

  After the bonding process, the operator dries the magnet laminate 14 and removes it from the container 180. Thereafter, the magnet laminate 14 may be magnetized by applying a predetermined magnetic force to the magnet laminate 14.

  As shown in FIGS. 14 to 16, the operator applies the adhesive 18 to the produced magnet laminate 14 and inserts the magnet laminate 14 into the slot 32 of the rotor core 30. The magnet laminate 14 is inserted into each of the plurality of slots 32. The rotor core 30 has a configuration in which a plurality of electromagnetic steel plates 31 are stacked. A jig 34 is inserted into a shaft hole 33 formed in the center of the rotor core 30.

  As shown in FIG. 17, in the processing step, the disc grindstone 170 grinds and removes the end in the height direction of the magnet laminate 14 protruding from the slot 32. The disc grindstone 170 simultaneously removes the ends in the height direction of the plurality of magnet laminates 14. A motor (not shown) drives the disk grindstone 170 to rotate.

  In this embodiment, although the edge part of the height direction of the magnet laminated body 14 is removed by grinding, this invention is not limited to this. The end of the magnet laminate 14 in the height direction may be removed by cutting. In this case, for example, a tool in which a diamond tip is attached to the outer periphery of a super steel disk is used as a processing portion for removing the end portion in the height direction of the magnet laminate. Moreover, when the dimension of the magnet laminate 14 in the height direction satisfies the tolerance, the processing step may be omitted.

  The effect of this embodiment is described.

  The magnet piece 10 is arranged such that the end 11 having a small size is disposed on the end 12 having a large size of the other magnet piece 10 or the end 15 having a large size of the magnet laminate 14, and the end having a large size. The portion 12 is disposed and laminated on the end portion 11 having a small size of the other magnet piece 10 or the end portion 16 having a small size of the magnet laminate 14. For this reason, for example, when the end portion 12 having a larger dimension is disposed on the end portion 12 having a larger dimension, the dimensional error is greatly biased and accumulated on one side of the both end portions 11 and 12. Generation of a gap between the magnet pieces 10 is prevented, and as a result, an increase in the stacking height of the magnet pieces 10 is suppressed. As described above, according to the rotor core magnet laminate manufacturing method and the rotor core magnet laminate system 100 of the present embodiment, an increase in the laminate height can be suppressed regardless of the machining of the magnet pieces 10, and thus the yield is improved and the magnet from the rotor core 30 is increased. The protrusion of the piece 10 can be prevented.

  The magnet piece 10 is laminated with the other magnet pieces 10 in the same warping direction. For this reason, the direction of the magnetic field can be unified as compared with the case where the warping directions are different, and as a result, the magnetic force of the magnet laminate 14 can be increased.

  Even if the magnet laminate 14 protrudes from the slot 32 as shown in FIG. 17, in the present embodiment, the end in the height direction of the magnet laminate 14 is removed by the disc grindstone 170. For this reason, it is not necessary to machine the magnet pieces 10 one by one with high dimensional accuracy so that the height dimension of the magnet laminate 14 is within the tolerance, and therefore the yield is good.

  Further, since the end of the magnet laminate 14 in the height direction is removed by the disc grindstone 170, the magnet laminate 14 can satisfy the tolerance in the height direction even if the dimensional tolerance of each magnet piece 10 is loose, Therefore, the manufacturing cost of the magnet piece 10 can be reduced.

  Since the end portions in the height direction of the plurality of magnet laminates 14 are simultaneously removed by the disc grindstone 170, the plurality of magnet laminates 14 can be processed efficiently.

  Since the magnet laminate 14 is heated by the heater 160 while being pressed by the punch 150, the thickness of the adhesive 17 applied between the magnet pieces 10 is reduced. Further, the magnet piece 10 slides along the inclined end portion 13 of the other adjacent magnet piece 10 by pressing by the punch 150. As a result, the dimension in the height direction of the magnet laminate 14 is reduced and the protrusion from the slot 32 is eliminated, or the protruding portion is reduced. For this reason, since the quantity of the magnet removed by the disk grindstone 170 can be reduced, a yield improves. Moreover, since the magnet laminated body 14 is heated by the heater 160 while being pressed by the punch 150, the adhesive 17 spreads over the entire contact surface between the magnet pieces 10, and the degree of adhesion between the magnet pieces 10 increases. Therefore, the magnet pieces 10 can be firmly bonded to each other.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims.

  For example, the shape of the magnet piece is not limited to the above embodiment. The shape of the magnet piece may be another conventionally known shape. Moreover, it is not necessary to know a specific dimension about the magnitude | size of the both ends of a magnet piece or a magnet laminated body, and these should just know relative magnitude.

  Moreover, in the said embodiment, although the magnet piece 10 is laminated | stacked and adhere | attached in the container 180 in a lamination process and an adhesion | attachment process, this invention is not limited to this. For example, the magnet piece 10 may be laminated and bonded in the slot 32 of the rotor core 30. In the above embodiment, the adhesive 18 is applied before the magnet laminate 14 is inserted into the slot 32, but the adhesive 18 is injected into the slot 32 after the magnet laminate 14 is inserted into the slot 32. May be. Further, it is only necessary that the magnet laminate 14 and the rotor core 30 can be fixed. After the magnet laminate 14 is inserted into the slot 32, resin may be injected into the slot 32 instead of the adhesive 18.

  In addition, each step of the method for manufacturing the magnet laminate may be performed manually by the operator himself or automatically by an industrial robot or the like.

10 Magnet pieces,
11, 12 Both ends of the magnet piece,
13 Ends of magnet pieces (surfaces on which the laminated magnet pieces overlap),
14 Magnet laminate,
15, 16 Both ends 17 of magnet laminated body Adhesive,
18 Adhesive,
100 magnet lamination system,
110 Picking robot (stacking device),
111 robot arm,
112 sucker,
120, 121 camera (detection unit),
130 control unit,
140 nozzle (adhesive discharge part),
150 punches (pressing part),
160 heater (heating unit),
170 disc grinding wheel (working part),
180 containers,
190 belt conveyor,
L1, L2, L3, L4 Size in the height direction.

Claims (10)

A method of manufacturing a magnet laminate having a configuration in which a plurality of magnet pieces are laminated,
The height direction at one end of the unmagnetized magnet pieces before being stacked, at both ends separated in the direction perpendicular to the height direction in which the magnet pieces are aligned when stacked on the other magnet pieces. A detection step of detecting the size of
And laminating the one magnet piece on at least one other unmagnetized magnet piece after the detecting step,
In the lamination step, one end portion of the one magnet piece that has a small size in the height direction detected in the detection step is the at least one other unmagnetized magnet piece. Of both ends spaced apart in a direction perpendicular to the height direction, and arranged on the end portion having a large size in the height direction, and
The other end portion of the one magnet piece having a large size in the height direction detected in the detecting step is the end portion of the at least one other unmagnetized magnet piece. Among these, the manufacturing method of a magnet laminated body arrange | positioned on the edge part with a small magnitude | size of the said height direction. In the detection step, the direction of warping of the one magnet piece as seen from the height direction is detected,
In the laminating step, the one magnet piece is laminated such that the direction of the warp is aligned with the direction of the warp as seen from the height direction of the at least one other unmagnetized magnet piece. 2. A method for producing a magnet laminate according to 1.   The manufacturing method of the magnet laminated body of Claim 1 or Claim 2 which has the process process which removes the edge part of the said height direction in the said magnet laminated body by a machining after the said lamination process.   The manufacturing method of the magnet laminated body of Claim 3 with which the said edge part of the said several magnet laminated body is removed simultaneously in the said process process. In the laminating step, an adhesive is applied to a surface where the magnet pieces overlap each other in at least one of the one magnet piece and the at least one other unmagnetized magnet piece,
5. The method according to claim 1, further comprising an adhesion step of bonding the magnet pieces by pressing the magnet laminate from the height direction after the lamination step. A method for producing a magnet laminate. A laminating apparatus for laminating one unmagnetized magnet piece on at least one other unmagnetized magnet piece;
About one magnet piece before being laminated, the height direction at both end portions separated in the direction perpendicular to the height direction in which the magnet pieces are arranged when stacked on the other magnet piece A detection unit for detecting the size of
A control unit electrically connected to the stacking device and the detection unit,
The control unit has at least one other unmagnetized magnet piece whose one end having a small size in the height direction detected by the detection unit among the both ends of the one magnet piece is the at least one other non-magnetized magnet piece. Of both ends spaced apart in a direction perpendicular to the height direction, and arranged on the end portion having a large size in the height direction, and
The other end of the at least one other unmagnetized magnet segment is the other end of the one magnet segment having a large size in the height direction detected by the detection unit. Among these, the magnet lamination system which controls operation | movement of the said lamination | stacking apparatus so that it may arrange | position on the edge part with a small magnitude | size of the said height direction. The detection unit detects a direction of warping of the one magnet piece as viewed from the height direction,
The control unit is configured so that the one magnet piece is stacked such that the direction of the warp is aligned with the direction of the warp as seen from the height direction of the at least one other unmagnetized magnet piece. The magnet lamination system according to claim 6 which controls operation of a lamination device.   The magnet lamination system according to claim 6 or 7 which has a processing part which removes an end of the height direction in a magnet lamination which laminated said magnet piece by machining.   The magnet lamination system according to claim 8 with which said processing part removes said end part of a plurality of said magnet lamination bodies simultaneously. An adhesive discharge section for discharging an adhesive to a surface where the magnet pieces overlap each other in at least one of the one magnet piece and the at least one other unmagnetized magnet piece;
A pressing portion that presses the magnet laminate in which the magnet pieces are laminated from the height direction;
The magnet lamination system according to claim 6, further comprising: a heating unit that heats the magnet laminate.

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