JP2021072746A - Laminated iron core manufacturing device, laminated iron core, and laminated iron core manufacturing method - Google Patents

Abstract

To prevent a liquid material applied to a plate-shaped member from adhering to a lifter.SOLUTION: A laminated iron core manufacturing device in which a plurality of punch members obtained by punching a plate-shaped member is laminated includes transport means that transports a plate-shaped member, a lifter that supports the plate-shaped member transported by the transport means, a liquid material supply unit that adheres a liquid material to a region to be the punch member in a main surface of one of the plate-shaped members transported by the transport means, and a punching processing unit that forms the punch member by punching the plate-shaped member after the liquid material is attached, and the liquid material supply unit adheres the liquid material to the plate-shaped member in an area other than a contact area in which the plate-shaped member and the lifter on the upstream side of the punching processing unit and on the downstream side of an attachment position of the liquid material by the liquid material supply unit in an area that becomes the punching member in the plate-shaped member come into contact with each other.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to an apparatus for manufacturing a laminated iron core, a laminated iron core, and a method for manufacturing a laminated iron core.

Patent Document 1 discloses a laminated iron core manufacturing apparatus for laminating and adhering thin iron core plates punched and formed into a predetermined shape from a strip-shaped steel plate by a mold. In such a manufacturing apparatus, it is known that a thin iron core plate is punched out after applying an adhesive to a predetermined position of a steel plate.

Patent No. 5160862

By the way, the plate-shaped members used for the laminated iron core are becoming thinner in response to the needs for higher efficiency of the motor. Therefore, in order to prevent a part of the plate-shaped member in the middle of punching from hanging down during transportation and interfering with the die, a configuration is known in which the plate-shaped member is lifted from the die by using a lifter and conveyed.

However, if a lifter is provided in a manufacturing apparatus that applies an adhesive before punching the thin iron core plate, the adhesive applied to the iron core steel plate may adhere to the lifter.

The present disclosure has been made in view of the above, and provides an apparatus for manufacturing a laminated iron core, a laminated iron core, and a method for manufacturing a laminated iron core, in which a liquid material applied to a plate-shaped member is prevented from adhering to a lifter. The purpose is to do.

In order to achieve the above object, the laminated iron core manufacturing apparatus according to one embodiment of the present disclosure is a laminated iron core manufacturing apparatus for laminating a plurality of punched members obtained by punching a plate-shaped member, and the plate-shaped member. Of the main surface of one of the transporting means for transporting, the lifter for supporting the plate-shaped member transported by the transporting means, and the plate-shaped member transported by the transporting means, the region to be the punching member. It has a liquid material supply unit to which the liquid material is attached, and a punching processing unit for punching the plate-shaped member after the liquid material is attached to form the punching member. The liquid material supply section is the lifter and the plate on the downstream side of the liquid material supply section where the liquid material is attached and on the upstream side of the punching process section in the region to be the punching member. The liquid material is adhered to the plate-shaped member while avoiding the contact area where the shaped member comes into contact with the shaped member.

The laminated iron core according to one embodiment of the present disclosure is a laminated iron core in which three or more punched members obtained by punching a plate-shaped member are laminated and adhered with an adhesive, and is an adjacent punched member. Each of them has an unapplied region of an adhesive, and the unapplied region of the adhesive provided for each of the adjacent punched members includes a region that does not overlap in a plan view.

The method for manufacturing a laminated iron core according to one embodiment of the present disclosure is a method for manufacturing a laminated iron core in which a plurality of punched members obtained by punching a plate-shaped member are laminated, and is one of the main surfaces of the plate-shaped member. The liquid material is adhered to the region to be the punched member, the plate-shaped member to be transported is supported by the lifter, and the plate-shaped member after the liquid material is adhered is punched out. The process, including the formation of the punched member, and the attachment of the liquid material is the region downstream of the attachment of the liquid material in the region to be the punched member. This includes adhering the liquid material to the plate-shaped member while avoiding a contact region where the lifter and the plate-shaped member come into contact with each other on the upstream side of forming the punched member.

According to the present disclosure, there is provided an apparatus for manufacturing a laminated iron core in which a liquid material applied to a plate-shaped member is prevented from adhering to a lifter, a laminated iron core, and a method for manufacturing the laminated iron core.

FIG. 1 is a perspective view showing an example of a stator laminated iron core. FIG. 2 is a schematic view showing an example of an apparatus for manufacturing a laminated iron core. FIG. 3 is a schematic cross-sectional view showing an example of a press working apparatus. FIG. 4 is a top view schematically showing an example of a part of a die member included in a press working apparatus and an adhesive supply unit. FIG. 5 is a diagram showing an example of a processing layout of a stator laminated iron core. FIG. 6 is a diagram showing a modified example of the processing layout of the stator laminated iron core. 7 (a) and 7 (b) are views showing a modified example of the shape of the lifter, and FIG. 7 (c) is a diagram showing a modified example of the region to which the adhesive is applied. FIG. 8 is a diagram showing a modified example of the processing layout of the stator laminated iron core.

Hereinafter, embodiments for carrying out the present disclosure will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted.

[Structure of stator laminated iron core]

First, the configuration of the stator laminated iron core 1 will be described with reference to FIG. The stator laminated iron core 1 is a part of a stator (stator). The stator is a stator laminated iron core 1 with windings attached. The stator is combined with the rotor to form an electric motor.

The stator laminated iron core 1 is configured by stacking a plurality of punched members W (iron core members). The stator laminated iron core 1 has a cylindrical shape. That is, a through hole 1a extending along the central axis Ax is provided in the central portion of the stator laminated iron core 1. A rotor can be arranged in the through hole 1a.

The stator laminated iron core 1 has a yoke portion 2 and a plurality of teeth portions 3. The yoke portion 2 has an annular shape and extends so as to surround the central axis Ax. The width, inner diameter, outer diameter, and thickness of the yoke portion 2 in the radial direction (hereinafter, simply referred to as “diameter direction”) can be set to various sizes according to the application and performance of the motor.

A plurality of ear metal portions (not shown) protruding outward in the radial direction may be integrally provided on the outer peripheral surface of the yoke portion 2. The ear metal portion may be provided with a through hole penetrating the ear metal portion in the stacking direction of the stator laminated iron core 1. The through hole functions as, for example, an insertion hole for a bolt for fixing the stator laminated iron core 1 to the housing (not shown) of the electric motor. The number of ear metal portions (number of through holes) may be appropriately set according to the type of the stator laminated iron core 1 and the like.

Each tooth portion 3 extends along the radial direction (direction intersecting the yoke portion 2) from the inner edge of the yoke portion 2 toward the central axis Ax side. That is, each tooth portion 3 projects from the inner edge of the yoke portion 2 toward the central axis Ax side. In the stator laminated iron core 1, 48 tooth portions 3 are integrally formed with the yoke portion 2. The tooth portions 3 are arranged at substantially equal intervals in the circumferential direction. A slot 4 which is a space for arranging a winding (not shown) is defined between the adjacent teeth portions 3.

The stator laminated iron core 1 is configured by stacking a plurality of punched members W (iron core members). The punched member W is a plate-shaped body in which an electromagnetic steel plate MS (plate-shaped member) is punched into a predetermined shape, and has a shape corresponding to the stator laminated iron core 1. Therefore, as shown in FIG. 5, the punching member W is formed with through holes Wa corresponding to the through holes 1a of the stator laminated iron core 1. Further, the punching member W is provided with an annular portion Wb corresponding to the yoke portion 2, a teeth piece Wc corresponding to the teeth portion 3, and a recess Wd corresponding to the slot 4. In the following embodiment, the case where the laminated iron core is manufactured by punching the electromagnetic steel plate MS will be described, but the plate-shaped member used for the laminated iron core is not limited to the electromagnetic steel plate. As the plate-shaped member, in addition to an electromagnetic steel plate, a member made of a general iron core material such as an amorphous metal plate or an alloy plate can be used. The thickness of the plate-shaped member can be, for example, about 0.1 mm to 0.5 mm, but is not limited to this range.

The plurality of punched members W are fixed to each other by an adhesive. In the laminated iron core manufacturing apparatus described later, the punching member W is formed by punching after applying an adhesive to one surface of the electromagnetic steel sheet MS. The stator laminated iron core 1 is manufactured by laminating a plurality of punching members W to which an adhesive is applied on one surface formed in this manner. Although the details will be described later, in the laminated iron core manufacturing apparatus, a region where the adhesive is not applied is formed on a part of the adhesive application surface of the punching member W.

The stator laminated iron core 1 may be configured by so-called transshipment. "Transposition" means stacking a plurality of punching members W while relatively shifting the angles of the punching members W. The rolling product is mainly carried out for the purpose of canceling the plate thickness deviation of the punching member W and increasing the flatness, parallelism and squareness of the stator laminated iron core 1. The rolling product angle may be set to an arbitrary size.

In the stator laminated iron core 1, a process of stacking several punching members W in the same direction and then changing the angle of the punching members W by rolling over is repeated. As a result, the unapplied portion (uncoated region N) of the adhesive is prevented from being biased in a specific direction of the stator laminated iron core 1. This point will be described later.

[Structure of laminated iron core manufacturing equipment]
Subsequently, the laminated iron core manufacturing apparatus 100 will be described with reference to FIG. The manufacturing apparatus 100 is configured to manufacture the laminated body 10 from the strip-shaped electromagnetic steel plate MS. As shown in FIG. 2, the manufacturing apparatus 100 includes an uncoiler 110, a sending apparatus 120, a press working apparatus 130, and a controller Ctr (control unit).

The uncoiler 110 is configured to rotatably hold the coil material 111. The coil material 111 is made by winding an electromagnetic steel plate MS in a coil shape (spiral shape). The delivery device 120 includes a pair of rollers 121 and 122 that sandwich the electromagnetic steel plate MS from above and below. The pair of rollers 121 and 122 are configured to rotate and stop based on an instruction signal from the controller Ctr, and intermittently and sequentially feed the electromagnetic steel plate MS toward the press working apparatus 130. That is, the pair of rollers 121 and 122 have a function as a conveying means for conveying the electromagnetic steel sheet MS.

The press working apparatus 130 is configured to operate based on an instruction signal from the controller Ctr. The press working device 130 may be configured to form, for example, a plurality of punching members W by sequentially punching the electromagnetic steel plate MS sent out by the sending device 120 with a plurality of punches. The press working apparatus 130 may be configured to form the laminated body 10 by sequentially laminating a plurality of punching members W obtained by punching. The configuration of the press working apparatus 130 will be described later.

The controller Ctr so as to generate an instruction signal for operating the transmission device 120 and the press working device 130, for example, based on a program recorded on a recording medium (not shown) or an operation input from an operator. It is configured. The controller Ctr is configured to transmit the instruction signal to the transmission device 120 and the press working device 130, respectively.

[Details of press processing equipment]
Subsequently, the details of the press working apparatus 130 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the press working apparatus 130 includes a lower die 140, an upper die 150, and a press machine 160. The lower mold 140 includes a base 141, a die holder 142, die members D1 to D4, an adhesive supply unit 143 (liquid material supply unit), a plurality of guide posts 144, and a transfer mechanism 145.

The base 141 is fixed on the floor surface, for example, and functions as a base for the entire press working apparatus 130. The die holder 142 is supported on the base 141. A plurality of discharge holes C1 to C4 are formed in the die holder 142. The die holder 142 may be made of, for example, a steel material (raw material) that has not been subjected to heat treatment such as quenching.

The plurality of discharge holes C1 to C4 may extend inside the die holder 142 in the vertical direction (see arrow Z in FIG. 3). Materials punched from the electrical steel sheet MS (for example, punched member W, waste material, etc.) are discharged into the plurality of discharge holes C1 to C4.

The die members D1 to D4 are attached to the upper portion of the die holder 142 so as to be adjacent to each other in the transport direction of the electrical steel sheet MS. The plurality of die members D1 to D4 are arranged in this order from the upstream side to the downstream side in the transport direction of the electrical steel sheet MS. Further, an adhesive supply unit 143 is provided between the die member D3 and the die member D4.

The die members D1 to D3 have substantially the same configuration.

The die member D1 includes a die plate D11 and a die D12. The die plate D11 is configured to hold the die D12 in a through hole provided in the center. The die plate D11 may be made of, for example, a steel material that has been subjected to a heat treatment such as quenching. The die D12 may be made of, for example, a cemented carbide containing tungsten carbide. The die D12 is formed with a die hole D13 penetrating in the vertical direction. The die hole D13, together with the punch P1, constitutes a unit for punching the electromagnetic steel sheet MS. Further, the die hole D13 communicates with the discharge hole C1. By inserting and removing the punch P1 into the die hole D13, the electrical steel sheet MS is punched in a shape along the contour of the die hole D13. The metal piece punched out from the electromagnetic steel sheet MS is discharged to the outside of the press working apparatus 130 through the discharge hole C1.

The die member D2 includes a die plate D21 and a die D22. The die plate D21 is configured to hold the die D22 in a through hole provided in the center. The materials of the die plates D21 and D22 may be the same as those of the die plates D11 and D12, respectively. The die D22 is formed with a die hole D23 that penetrates in the vertical direction. The die hole D23, together with the punch P2, constitutes a unit for punching the electromagnetic steel sheet MS. Further, the die hole D23 communicates with the discharge hole C2. By inserting and removing the punch P2 into the die hole D23, the electrical steel sheet MS is punched in a shape along the contour of the die hole D23. The metal piece punched out from the electromagnetic steel sheet MS is discharged to the outside of the press working apparatus 130 through the discharge hole C2.

The die member D3 includes a die plate D31 and a die D32. The die plate D31 is configured to hold the die D32 in a through hole provided in the center. The materials of the die plates D31 and D32 may be the same as those of the die plates D11 and D12, respectively. The die D32 is formed with a die hole D33 that penetrates in the vertical direction. The die hole D33, together with the punch P3 described later, constitutes a unit for punching the electrical steel sheet MS. The die hole D33 communicates with the discharge hole C3. By inserting and removing the punch P3 into the die hole D33, the electrical steel sheet MS is punched in a shape along the contour of the die hole D33. The metal piece punched out from the electromagnetic steel sheet MS is discharged to the outside of the press working apparatus 130 through the discharge hole C3.

In the present embodiment, as shown in FIG. 4, the through hole Wa of the punching member W corresponding to the through hole 1a may be formed in the electromagnetic steel plate MS by the punching process by the die member D3. Further, the recess Wd of the punching member W corresponding to the slot 4 of the stator laminated iron core 1 may be formed in the electromagnetic steel plate MS by the punching process by the die member D1 or the die member D2.

The adhesive supply unit 143 has a function of supplying an adhesive to the electrical steel sheet MS. As shown in FIG. 4, the adhesive supply unit 143 is a plate-shaped body having a rectangular shape, and can be arranged on the die holder 142 in the same manner as the die members D1 to D4. Further, a plurality of discharge ports 147 for discharging the adhesive are provided on the surface of the adhesive supply unit 143. Further, inside the adhesive supply unit 143, a supply path L1 connected to the discharge port 147 and supplying the adhesive to the discharge port 147 is provided.

The discharge port 147 is arranged in a substantially annular shape as shown in FIG. This is arranged so that the adhesive is applied to the annular portion Wb of the punching member W and the lower surface of the tooth piece Wc. However, the arrangement of the discharge port 147 is set so that a region where the adhesive is not applied is formed on a part of the annular portion Wb.

Specifically, when the electrical steel sheet MS moves along the transport direction X, the discharge port 147 is not provided in the region of the lower surface of the electrical steel sheet MS that is expected to come into contact with the lifter 146. As shown in FIG. 4, when the lifters 146 are lined up along the transport direction X, the lifter 146 on the downstream side of the discharge port 147 in the adhesive supply unit 143 applies the electromagnetic steel plate MS after the adhesive is applied. Will support. Specifically, of the plurality of lifters 146, the electromagnetic steel sheet MS after the adhesive has been applied is supported along the transport direction X on the downstream side of the discharge port 147 of the adhesive supply unit 143 and is a die. The lifters 146a, 146b, 146c, and 146d on the upstream side of the hole D43. Further, the lifter 146a and the lifter 146c, and the lifter 146b and the lifter 146d are arranged in a row along the transport direction, respectively. Under such conditions, the lifter 146a and the lifter 146c can come into contact with the contact region S1 shown by the broken line on the lower surface of the electrical steel sheet MS. Further, the lifter 146c can come into contact with the contact region S3 shown by the broken line on the lower surface of the electrical steel sheet MS. Similarly, the lifter 146b and the lifter 146d may come into contact with the contact region S2 shown by the broken line on the lower surface of the electrical steel sheet MS. The lifter 146d may come into contact with the contact region S4 shown by the broken line on the lower surface of the electrical steel sheet MS. Therefore, the discharge port 147 is arranged so that the adhesive does not adhere to the contact areas S1 to S4. In the example shown in FIG. 4, the discharge port 147 is arranged on the center side of the electrical steel sheet MS with respect to the contact areas S1 to S4. The central side of the electrical steel sheet MS corresponds to the central side of the punched member W after punching.

A supply path L1 is formed on the surface of the adhesive supply unit 143 from the discharge port 147 so that a predetermined amount of the adhesive can be discharged. The end 148 on the side opposite to the discharge port 147 side of the supply path L1 is connected to the liquid tank 149 provided outside via the pipe L2. A liquid feed pump P is provided in the pipe L2 between the liquid tank 149 and the end 148. The liquid feed pump P supplies the adhesive from the liquid tank 149 to the adhesive supply unit 143 by driving, for example, based on the instruction of the controller Ctr. The supplied adhesive is supplied to the surface of the adhesive supply unit 143 from the plurality of discharge ports 147 via the supply path L1.

The die member D4 includes a die plate D41, a die D42, a rotating body D44, and a drive mechanism D45. The die plate D41 of the die member D4 is configured to hold the die D42 supported by the rotating body D44 in a through hole provided in the central portion. The rotating body D44 is provided between the die plate D41 and the die D42. The rotating body D44 may be held so as to be rotatable about a central axis extending along the vertical direction with respect to the die plate D41. The die D42 is supported by the rotating body D44. As a result, the die D42 can rotate about the central axis extending in the vertical direction with respect to the die plate D41 while being supported by the rotating body D44. The materials of the die plate D41, the die D42, and the rotating body D44 may be the same as the materials of the die plate D11 and the die D12, respectively.

The die D42 is formed with a die hole D43 that penetrates in the vertical direction. The die hole D43, together with the punch P4, constitutes a unit for punching the electromagnetic steel sheet MS. The punching member W may be formed from the electromagnetic steel sheet MS by punching the electromagnetic steel sheet MS by the unit. That is, the die D42 and the punch P4 have a function as a punching processing portion for punching the electromagnetic steel sheet MS to form the punching member W. The die hole D43 may have a circular shape as a whole, for example.

The die hole D43 communicates with the discharge hole C4. By inserting and removing the punch P4 into the die hole D43, the electrical steel sheet MS is punched in a shape along the contour of the die hole D43. The punching member W punched from the electromagnetic steel sheet MS is laminated in the die hole D43 with respect to the punching member W punched in advance. At this time, the punched member W punched out from the electromagnetic steel sheet MS is adhered to the punched member W punched out in advance by the adhesive applied to the lower surface thereof. When a predetermined number of punching members W are laminated in the die hole D43, the obtained laminated body 10 is placed on the transport mechanism 145 through the discharge hole C4.

The drive mechanism D45 is connected to the rotating body D44. The drive mechanism D45 rotates the rotating body D44 around the central axes of the rotating body D44 and the die D42 based on the instruction signal from the controller Ctr. Therefore, after the punching member W punched from the electromagnetic steel sheet MS is stacked on the punching member W punched in advance, the die D42 rotates by a predetermined angle, so that the subsequent punching member W precedes. It is transshipped with respect to the punching member W to be punched. The drive mechanism D45 may be composed of, for example, a combination of a rotary motor, gears, a timing belt, and the like. As described above, the rotating body D44 and the drive mechanism D45 function as a rolling means for rolling the punching member W.

As shown in FIG. 3, the plurality of guide posts 144 extend linearly upward from the die holder 142. The plurality of guide posts 144, together with the guide bush 151a (described later), are configured to guide the upper die 150 in the vertical direction. The plurality of guide posts 144 may be attached to the upper mold 150 so as to extend downward from the upper mold 150.

The transport mechanism 145 operates based on the instruction from the controller Ctr so as to send the laminated body 10 dropped from the die D42 to a subsequent device (for example, a magnet mounting device, a resin injection device, a welding device, a shaft mounting device, etc.). It is configured in. In the transport mechanism 145, one end of the transport mechanism 145 is located in the discharge hole C4, and the other end of the transport mechanism 145 is located outside the press working device 130. The transport mechanism 145 may be, for example, a belt conveyor.

As shown in FIG. 3, the surfaces of the die plates D11, D21, D31, D41 and the adhesive supply portion 143 are flat. Further, the die plates D11, D21, D31, D41 and the adhesive supply unit 143 are provided with a lifter 146 projecting upward from the surface thereof.

The lifter 146 is in a state where the electromagnetic steel sheet MS conveyed on the die plates D11, D21, D31, D41 and the adhesive supply unit 143 is separated from the surfaces of the die plates D11, D21, D31, D41 and the adhesive supply unit 143. Provided to support. The arrangement of the lifter 146 is not particularly limited. In FIG. 4, the electromagnetic steel sheet MS transported on the die member is shown as a broken line, but as an example, lifters 146 can be provided near both ends of the electromagnetic steel sheet MS transported on the die plates D31 and D41. .. As shown in FIG. 4, a plurality of lifters 146 are arranged along the transport direction X of the electrical steel sheet MS.

In the lifter 146, when the electromagnetic steel sheet MS is punched by the vertical movement of the upper die 150 described later, the upper end of the lifter 146 is with the surfaces of the die plates D11, D21, D31, D41 and the adhesive supply unit 143. Can be the same height. As an example, the lifter 146 can be configured to be vertically movable by supporting, for example, a pin extending in the vertical direction by an elastic member provided below the pin. With such a configuration, in the state where the electrical steel sheet MS is conveyed, the lifter 146 extends upward to separate the electrical steel sheet MS from the surfaces of the die plates D11, D21, D31, D41 and the adhesive supply unit 143. Can be supported in a state of being. On the other hand, when the electrical steel sheet MS is punched, the lifter 146 is lowered to push the electrical steel sheet MS against the surfaces of the die plates D11, D21, D31, D41 and the adhesive supply unit 143. It is possible to hit. The lifter 146 is not limited to the above configuration.

Returning to FIG. 3, the upper die 150 includes a punch holder 151, a stripper 152, and a plurality of punches P1 to P4. The punch holder 151 is arranged above the die holder 142 so as to face the die holder 142. The punch holder 151 is configured to hold a plurality of punches P1 to P4 on the lower surface side thereof.

The punch holder 151 is provided with a plurality of guide bushes 151a. The plurality of guide bushes 151a are respectively positioned so as to correspond to the plurality of guide posts 144. The guide bush 151a has a cylindrical shape, and the guide post 144 can insert the internal space of the guide bush 151a. When the guide post 144 is attached to the upper die 150, the guide bush 151a may be provided on the lower die 140.

The punch holder 151 is provided with a plurality of through holes 151b. A step-like step is formed on the inner peripheral surface of the through hole 151b. Therefore, the diameter of the upper part of the through hole 151b is set smaller than the diameter of the lower part of the through hole 151b.

The stripper 152 is configured to remove the electromagnetic steel sheet MS that has bitten into the punches P1 to P4 from the punches P1 to P4 when the electromagnetic steel sheet MS is punched by the punches P1 to P4. At the same time, the stripper 152 is configured to press the electromagnetic steel plate MS against the adhesive supply unit 143. When the stripper 152 presses the electromagnetic steel sheet MS against the adhesive supply unit 143, the adhesive discharged from the discharge port 147 adheres to a predetermined position on the back surface of the electrical steel sheet MS. The stripper 152 is arranged between the die members D1 to D4, the adhesive supply unit 143, and the punch holder 151.

The stripper 152 is connected to the punch holder 151 via a connecting member 152a. The connecting member 152a includes a long main body portion and a head portion provided at the upper end of the main body portion. The main body of the connecting member 152a is inserted under the through hole 151b, and can move up and down in the through hole 151b. The lower end of the main body of the connecting member 152a is fixed to the stripper 152. An urging member 152b such as a compression coil spring may be attached around the main body of the connecting member 152a so as to be located between the punch holder 151 and the stripper 152.

The head of the connecting member 152a is arranged above the through hole 151b. The outer shape of the head of the connecting member 152a is set to be larger than the outer shape of the main body of the connecting member 152a when viewed from above. Therefore, the head of the connecting member 152a can move up and down in the upper part of the through hole 151b, but the step of the through hole 151b functions as a stopper so that the head cannot move to the lower part of the through hole 151b. Therefore, the stripper 152 is suspended and held by the punch holder 151 so that it can move up and down relative to the punch holder 151.

The stripper 152 is provided with through holes at positions corresponding to punches P1 to P4. Each through hole extends in the vertical direction. Each through hole communicates with the corresponding die holes D13 to D43 when viewed from above. The lower portions of the punches P1 to P4 are inserted into the through holes, respectively. The lower portions of the punches P1 to P4 are slidable in each through hole, respectively.

The punches P1 to P4 are arranged so as to be arranged in this order from the upstream side to the downstream side of the press working apparatus 130. The lower ends of the punches P1 to P4 have shapes corresponding to the die holes D13 to D43, respectively. Further, a plurality of punches P1 may be provided according to the number of die holes and the like.

The press machine 160 is located above the upper die 150. The piston of the press machine 160 is connected to the punch holder 151 and operates based on an instruction signal from the controller Ctr. When the press machine 160 operates, the piston expands and contracts, and the upper die 150 moves up and down as a whole.

[Manufacturing method of laminated iron core]
Subsequently, a method for manufacturing the laminated body 10 will be described with reference to FIGS. 4 and 5. The punching process by the operation of the punches P1 and P2 and the die members D1 and D2 will be described only roughly.

The electrical steel sheet MS is intermittently sent to the press working device 130 by the sending device 120, and moves along the transport direction X. When the predetermined portion of the electrical steel sheet MS reaches the die member D1, the press machine 160 operates to push the upper die 150 downward toward the lower die 140. When the stripper 152 reaches the electrical steel sheet MS, the electrical steel sheet MS held on the lifter 146 is pushed downward. When the lifter 146 is lowered by pushing the stripper 152, the electromagnetic steel plate MS on the lifter 146 comes into contact with the surface of the die member D1. Even after the electromagnetic steel plate MS is sandwiched between the stripper 152 and the die member D1, the press machine 160 pushes the upper die 150 downward.

At this time, the stripper 152 does not move, but the punch holder 151 and the punches P1 to P4 continue to descend. Therefore, the tips of the punches P1 to P4 move downward in each through hole of the stripper 152, and further reach the die holes D13 to D43. In this process, the punch P1 punches the electrical steel sheet MS along the die hole D13. The punched waste material is discharged from the discharge hole C1. After that, the press machine 160 operates to raise the upper mold 150.

Next, when the electromagnetic steel sheet MS is intermittently sent out by the delivery device 120 and the predetermined portion of the electrical steel sheet MS reaches the die member D2, the upper die 150 is moved up and down by the press machine 160 to punch in the same manner as described above. The electromagnetic steel sheet MS is punched by P2. As a result, the next through hole is formed in the electrical steel sheet MS. The punched waste material is discharged from the discharge hole C2.

Next, when the electromagnetic steel sheet MS is intermittently sent out by the delivery device 120 and the predetermined portion of the electrical steel sheet MS (see the processed portion A1 in FIG. 5) reaches the die member D3, the press machine 160 moves up in the same manner as described above. The mold 150 moves up and down, and the electromagnetic steel sheet MS is punched by the punch P3. As a result, the next through hole Wa (see the machined portion A1 in FIG. 5) is formed in the electrical steel sheet MS. The punched waste material is discharged from the discharge hole C2.

Next, when the electromagnetic steel sheet MS is intermittently sent out by the delivery device 120 and a predetermined portion of the electrical steel sheet MS (see the processed portion A2 in FIG. 5) reaches the adhesive supply unit 143, the press machine 160 operates. , Push the upper mold 150 downward toward the lower mold 140. At this time, when the stripper 152 reaches the electrical steel sheet MS, the electrical steel sheet MS held on the lifter 146 is pushed downward. When the lifter 146 is lowered by pushing the stripper 152, the electromagnetic steel plate MS on the lifter 146 comes into contact with the surface of the adhesive supply unit 143. Even after the electromagnetic steel plate MS is sandwiched between the stripper 152 and the adhesive supply unit 143, the press machine 160 pushes the upper mold 150 downward.

By driving the liquid feed pump P, the adhesive is supplied from the liquid tank 149 to the plurality of discharge ports 147 of the adhesive supply unit 143 via the pipe L2 and the supply path L1. Therefore, the liquid adhesive is supplied to the position corresponding to the discharge port 147 on the surface of the adhesive supply unit 143. In this state, when the electrical steel sheet MS is sandwiched between the stripper 152 and the adhesive supply unit 143, the adhesive adheres to a predetermined position on the lower surface (main surface on the lower mold 140 side) of the electrical steel sheet MS. The processed portion A2 of FIG. 5 shows a state in which the adhesive B is applied to a position corresponding to the discharge port 147 on the lower surface of the electrical steel sheet MS. Further, as shown in FIG. 4, the discharge port 147 is not coated with an adhesive in the regions corresponding to the contact regions S1 to S4 with the lifters 146 (lifters 146a, 146b, 146c, 146d) in the electrical steel sheet MS. It is said that it is arranged properly. Therefore, the adhesive is applied so that the unapplied region N of the adhesive (see the processed portion A2 in FIG. 5) is provided on the punching member W. When the discharge port 147 is arranged as shown in FIG. 4, the unapplied region N of the adhesive is provided at two opposite positions on the peripheral edge of the annular portion Wb in the punching member W.

Next, when the electromagnetic steel sheet MS is intermittently sent out by the delivery device 120 and the predetermined portion of the electrical steel sheet MS (see the processed portion A3 in FIG. 5) reaches the die member D4, the press machine 160 moves up in the same manner as described above. The mold 150 moves up and down, and the electromagnetic steel sheet MS is punched (outer diameter punching) by the punch P4. As a result, the punching member W is formed. The punched member W is laminated in the die hole D43 with respect to the punched member W punched in advance.

The plurality of punched members W punched as described above are transferred in the die hole D43 so that the tooth pieces Wc overlap each other in the height direction. After that, when a predetermined number of punching members W are laminated, the laminated body 10 is completed.

When the laminated body 10 is formed while rolling the punched member W in which the uncoated region N of the adhesive exists as described above, as shown in FIG. 1, the laminated body 10 is not coated along the peripheral edge of the stator laminated iron core 1. The area N is arranged in a dispersed manner. In other words, the unapplied region of the adhesive provided for each punched member W includes a region that does not overlap in a plan view. In the example shown in FIG. 1, a state in which the punched members W are stacked every time eight sheets are stacked is shown. The timing of the transfer is not particularly limited, and for example, the punching member W may be transferred each time one sheet is laminated, or may be transferred each time a plurality of punched members W are laminated as shown in FIG.

[Modification example]
Next, a modified example of the manufacturing apparatus and manufacturing method of the stator laminated iron core 1 will be described. FIG. 6 shows an example in which the shape of the uncoated region N formed on the electrical steel sheet MS is changed by changing the arrangement of the discharge port 147.

In the example shown in FIG. 6, the arrangement of the lifters 146 (lifters 146a, 146b, 146c, 146d) is the same as in FIGS. 4 and 5. Therefore, the shapes of the contact regions S1 to S4 are also the same as those of the electromagnetic steel sheet MS shown in FIG. On the other hand, in the example shown in FIG. 6, the arrangement of the discharge port 147 in the adhesive supply unit 143 is changed, and the discharge port 147 is provided outside the area corresponding to the contact areas S1 to S4 in the electrical steel sheet MS. As a result, the uncoated region N in the punched member W has substantially the same shape as the region corresponding to the contact regions S1 to S4. With such a configuration, the unapplied region N of the adhesive can be made smaller as compared with the example shown in FIG.

Next, an example of deforming the shape of the lifter 146 will be described. In the lifter 146 described above, the contact surface of the lifter 146 with respect to the electrical steel sheet MS is rectangular at both ends in the longitudinal direction. However, by changing the shape of the lifter 146, the shape of the contact surface of the lifter 146 with respect to the electrical steel sheet MS can be changed.

FIG. 7 is a diagram illustrating a change in the shape of the lifter 146. FIG. 7A is a top view of the lifter 146X according to the modified example, and FIG. 7B is a view of the lifter 146X viewed from the transport direction X of the electrical steel sheet MS. The lifter 146X has a recess 146p extending along the transport direction X in the upper center. Therefore, the upper surface 146s of the lifter 146X, which can come into contact with the electrical steel sheet MS, is divided into two by the recess 146p, and is separated by sandwiching the recess 146p. When the lifter 146X on the downstream side of the discharge port 147 of the adhesive supply unit 143 has such a shape, the contact region with the lifter 146X in the electrical steel sheet MS corresponds to the upper surface 146s of the lifter 146X. It becomes the area that was used. Therefore, the contact region with the lifter 146X in the electrical steel sheet MS does not include a region that can face the recess 146p. Therefore, as shown in FIG. 7C, the adhesive B may also be applied to the region of the electromagnetic steel sheet MS moving along the transport direction X facing the recess 146p.

In this way, the shape of the lifter 146 can be changed as appropriate. Further, it is possible to apply the adhesive while avoiding the contact region where the lifter 146 downstream of the adhesive discharge port 147 of the adhesive supply unit 143 and upstream of the die D42 can come into contact with the electromagnetic steel sheet MS. The area can be changed as appropriate within the range.

From the above viewpoint, the unapplied region of the adhesive by the adhesive supply unit 143 may be designed in consideration of the arrangement of the lifter 146 with respect to the electromagnetic steel sheet MS. Therefore, how the punching member W is formed from the electrical steel sheet MS is not particularly limited. For example, in the above embodiment, in the press working apparatus 130, the die members D1 to D4 and the adhesive supply unit 143 necessary for forming the punching member W are arranged in a row along the transport direction X of the electromagnetic steel sheet MS. The case was explained. On the other hand, a press working apparatus in which the die members D1 to D4 and the adhesive supply unit 143 necessary for forming the punching member W are arranged in two rows along the transport direction X of the electrical steel sheet MS may be used. .. Even in such a case, the relationship between the lifter 146 described in the above embodiment and the region to which the adhesive is applied can be applied.

FIG. 8 shows processing of a stator laminated iron core when a series of processing mechanisms, that is, die members D1 to D4 required for forming the punching member W and the adhesive supply unit 143 are arranged in two rows along the transport direction X. It is a figure which shows the example of a layout. In the example shown in FIG. 8, it is possible to punch out two punching members W along the width direction (direction orthogonal to the transport direction X) of the electrical steel sheet MS. In the two-row arrangement device, punching is performed at the two processing sites A11 and A12. Similarly, the adhesive is applied to the processed parts A21 and 22, and the punching process related to the formation of the punching member W is performed at the processed parts A31 and 32. Adhesive B is applied to the region of the electromagnetic steel sheet MS that has been punched at the machined portion A11, and the punched member W is formed at the machined portion A31 by a device corresponding to the die member D4 and the punch P4. To. On the other hand, in the region of the electromagnetic steel sheet MS that has been punched in the machined portion A12, the adhesive B is applied to the machined portion A22, and the punched member W is formed in the machined portion A32 by the device corresponding to the die member D4 and the punch P4. It is formed. In the example shown in FIG. 8, the arrangements of the processing portions A31 and A32 for punching the punching member W are positioned so as to be offset from each other along the transport direction X, but this point is appropriately changed depending on the structure of each part of the apparatus and the like. be able to.

Even in such a two-row arrangement device, support by the lifter 146 is performed. _{In FIG. 8, lifters 146 11 to 146 15} , lifters 146 _{21 to 146 29} , and lifters 146 _{31 to 146 35} provided between the processed portion A21 and the processed portion A31 and between the processed portion A22 and the processed portion A32 are shown. ing. The lifters 146 _{11 to 146 15} , the lifters 146 _{21 to 146 29} , and the lifters 146 _{31 to 146 35} are arranged in a row along the transport direction X, respectively. In such a case, the electrical steel sheet MS is provided with a contact region with the lifter according to the arrangement of _{the lifters 146 11 to 146 15} , the lifters 146 _{21 to 146 29} , and the lifters 146 _{31 to 146 35.} Therefore, by designing the adhesive application area in the processed parts A21 and A22 based on the arrangement of the _{lifters 146 11 to 146 15} , the lifters 146 _{21 to 146 29} , and the lifters 146 _{31 to 146 35, the adhesive can be applied.} The uncoated region N of the above can be formed on the electromagnetic steel sheet MS.

When the number of lifters increases as in the example shown in FIG. 8, it is necessary to increase the uncoated area N to prevent the adhesive from adhering to the lifters. In the example shown in FIG. 8, since the lifters 146 _{11 to 146 15} , the lifters 146 _{21 to 146 29} , and the lifters 146 _{31 to 146 35} are arranged in a row, the area of the uncoated area N can be reduced. .. On the other hand, for example, if the area of the upper surface of the lifter 146 is increased and the contact region with the electrical steel sheet MS is increased, it is necessary to increase the uncoated region N. As described above, the shape, number, and arrangement of the lifters 146 are not particularly limited, but it is necessary to appropriately change the shape of the uncoated region N according to the arrangement of the lifters 146.

[Action]
In the laminated steel core manufacturing apparatus and manufacturing method including the press working apparatus 130 described in the above embodiment, the electromagnetic steel sheet MS is configured to intermittently and sequentially feed in the transport direction X (see FIGS. 4 and 5). There is. The electrical steel sheet MS is supported by the lifter 146 in a state of being separated from the surfaces of the die plates D11, D21, D31, D41 and the adhesive supply unit 143. At this time, in the adhesive supply unit 143, the die D42 and the punch P4 which are downstream of the adhesion portion of the liquid material in the adhesive supply unit 143 and function as the punching processing unit in the region to be the punching member W. The liquid material is adhered to the electrical steel sheet MS while avoiding the contact region where the lifter 146 on the upstream side and the electrical steel sheet MS are in contact with each other. Specifically, the adhesive discharge port 147 is provided avoiding the contact regions S1 to S4 that come into contact with any of the lifters 146a, 146b, 146c, and 146d of the electrical steel sheet MS. As a result, the uncoated region N including the contact regions S1 to S4 is provided on the electromagnetic steel sheet MS (the punched member W formed from).

By having the above configuration, it is possible to prevent the adhesive from adhering to the upper surfaces of the lifters 146a, 146b, 146c, and 146d, and the adhesive adhering to the lifter can be further applied to other regions of the electrical steel sheet MS. It can be prevented from adhering. In addition, maintenance work and the like that occur when the adhesive adheres to the lifter can be reduced.

Since the electromagnetic steel sheet used for the laminated iron core is thinned, there is a possibility that the tooth piece Wc or the like hangs down in the press working apparatus 130 and interferes with the die member or the like. Therefore, in the press working apparatus 130, a configuration in which the electromagnetic steel sheet MS is supported by the lifter 146 is being studied. On the other hand, when the punching member W is formed by punching after applying the adhesive to the electromagnetic steel sheet MS to form a laminated iron core, the electromagnetic steel sheet MS after applying the adhesive is supported by the lifter 146 to lift the lid. Adhesive may adhere to 146.

In order to avoid the above problem, it is also considered to support the outer side of the electromagnetic steel sheet MS from the region to which the adhesive is normally applied, that is, the region to be punched as the punching member W by the lifter. However, widening the electrical steel sheet MS in order to secure an area for supporting by the lifter leads to an increase in material cost. Therefore, it is required to prevent an increase in material cost and prevent the adhesive from adhering to the lifter.

On the other hand, in the laminated iron core manufacturing apparatus described in the present embodiment, of the regions to be the punched members W, the contact regions S1 to S4 that come into contact with the lifter 146 are provided with the adhesive uncoated regions N. .. With such a configuration, it is possible to prevent the adhesive from adhering to the lifter 146 (lifter 146a, 146b, 146c, 146d) that supports the electromagnetic steel sheet MS after the adhesive has been applied. In particular, since it is possible to prevent the adhesive from adhering to the lifter while preventing the electromagnetic steel sheet MS from being widened, it is possible to prevent an increase in material cost.

Further, in the above-mentioned laminated iron core manufacturing apparatus, a plurality of punched members W are laminated while the angles of the punched members W after processing are relatively shifted. With such a configuration, it is possible to prevent the rigidity from being lowered in only one direction even in the laminated iron core formed by laminating the punched members W having the uncoated region N as described above. .. In addition, it is possible to prevent the occurrence of thickness bias depending on the presence or absence of the adhesive.

Further, it is a laminated iron core in which three or more punched members W manufactured by transshipment as described above and punched out of an electromagnetic steel plate MS are laminated and adhered with an adhesive, and adjacent punches are made. Each member W has an uncoated region of adhesive, and the uncoated region N of adhesive provided for each of the adjacent punched members includes a region that does not overlap in a plan view. With such a configuration, it is possible to prevent the rigidity from being lowered in only one direction even in the laminated iron core formed by laminating the punched members W having the uncoated region N as described above. .. In addition, it is possible to prevent the occurrence of thickness bias depending on the presence or absence of the adhesive.

Further, like the lifter 146X described in the above modification, the adhesive supply unit 143 has a recess 146p extending along the transport direction X of the electrical steel sheet MS by the transport means, and the adhesive supply unit 143 has a recess 146p of the electrical steel sheet MS. The adhesive may also be applied to the opposing regions. With such a configuration, it is possible to prevent the uncoated region N of the adhesive from spreading over a wide area, and thus it is possible to prevent a decrease in adhesive strength due to the provision of the uncoated region N.

The lifter 146 is provided so that a region different from the region of the punching member W that becomes the tooth piece Wc becomes the contact regions S1 to S4. With such a configuration, the unapplied region N of the adhesive is provided on the specific tooth piece Wc, and it is possible to prevent the tooth piece Wc from being not properly adhered and the rigidity from being lowered. Further, when the motor is operated, the magnetic field strength at the tip of the tooth portion 3 of the stator laminated iron core 1 is increased. Therefore, if the tooth pieces Wc are not properly adhered to each other, the tooth pieces Wc of the laminated punching members W may repel each other due to the magnetic force and easily peel off. As described above, when the region different from the region where the teeth piece Wc is formed in the punching member W is the contact regions S1 to S4, the stator laminated iron core 1 is damaged due to the generation of magnetic force as described above. It is also possible to suppress the possibility. In the case of the stator laminated iron core 1 as described in the above embodiment, the rigidity of the laminated iron core can be prevented from being lowered by providing the uncoated region N in the annular portion Wb corresponding to the yoke portion 2. ..

The lifters on the downstream side of the adhesive bonding portion 143 and on the upstream side of the die D42 and the punch P4 are lined up along the transport direction X of the electrical steel sheet MS. In the case of lifters 146a, 146b, 146c, and 146d, they are arranged in two rows. With such a configuration, the uncoated region N for preventing the adhesive from adhering to the lifters 146a, 146b, 146c, and 146d can be reduced, so that the rigidity of the laminated iron core after bonding can be reduced. Can be prevented.

The present disclosure is not limited to the above-described embodiment as it is, and at the implementation stage, the components can be modified and embodied without departing from the gist thereof. In addition, various inventions can be formed by an appropriate combination of the plurality of components disclosed in the above-described embodiment.

For example, in the above embodiment, the manufacturing apparatus 100 for manufacturing the stator laminated iron core has been described, but the mold apparatus may be an apparatus for manufacturing the rotor laminated iron core. The laminated iron core to be manufactured by the manufacturing apparatus 100 is not particularly limited. Further, depending on the shape of the laminated iron core, that is, according to the shape of the punching member W punched from the electromagnetic steel plate MS, that is, the place where the adhesive-uncoated region N is formed (that is, the place where the lifter 146 is provided). It may be changed as appropriate.

Further, the configuration and arrangement of the lifter 146 can be changed as appropriate. Further, the shape, number, and the like of the lifter 146 can be changed as appropriate. For example, in the above embodiment, the configuration in which the lifter 146 supports both ends of the electrical steel sheet MS in the width direction or the center of the electrical steel sheet MS has been described, but the arrangement of the lifter 146 can be changed as appropriate. Further, in the above embodiment, the case where the longitudinal direction of the lifter 146 corresponds to the transport direction X of the electromagnetic steel sheet has been described, but it may be tilted with respect to the transport direction X.

Further, in the above embodiment, the case where the adhesive is applied to the electrical steel sheet MS has been described, but as described above, in the configuration in which the uncoated area is provided on the electrical steel sheet MS, a liquid material other than the adhesive is used as the electrical steel sheet MS. It can also be applied when it is applied to. Specifically, examples of the liquid material include a primer and the like. The configuration described in the above embodiment can be applied to all cases where a liquid material which may adhere to the lifter 146 and which may have a problem when it adheres to the lifter 146 is attached to the electrical steel sheet MS. it can.

Further, although the configuration in which the adhesive supply unit 143 is provided in the press working apparatus 130 has been described, the configuration for applying the adhesive to the electromagnetic steel plate MS (the configuration for adhering the liquid material) is the press. It does not have to be integrally configured with the processing device 130, and may be configured by another device.

[Additional Notes]
The specific example described above includes the following configurations.

The laminated iron core manufacturing apparatus according to one embodiment of the present disclosure is a laminated iron core manufacturing apparatus for laminating a plurality of punched members obtained by punching an electromagnetic steel plate, and is a transport means for transporting the electromagnetic steel plate and the transport. Supply of a liquid material that adheres a liquid material to a region of the main surface of one main surface of the electromagnetic steel sheet conveyed by the means and the lifter that supports the electromagnetic steel sheet conveyed by the means to be a punching member. It has a portion and a punching-processed portion for forming the punching member by punching the electromagnetic steel sheet after the liquid material is attached, and the liquid material supply portion is the punching member. In the region, avoid the contact region where the lifter and the electrical steel sheet are in contact with each other on the downstream side of the liquid material supply portion on the downstream side of the attachment portion of the liquid material and on the upstream side of the punching processing portion. A liquid material is attached to the electromagnetic steel sheet.

It is possible to further have a transfer means for laminating a plurality of punched members while relatively shifting the angles of the punched members formed by the punched portion.

The lifter has a recess extending along the transport direction of the electromagnetic steel sheet by the transport means, and the liquid material supply unit adheres the liquid material to a region of the electromagnetic steel sheet facing the recess. Can be.

The lifter may be provided so that a region different from the region serving as the teeth portion of the punched member becomes the contact region.

The lifters on the downstream side of the liquid material supply section and on the upstream side of the punching section are arranged along the transport direction of the electromagnetic steel sheet by the transport means. can do.

The laminated iron core according to one embodiment of the present disclosure is a laminated iron core in which three or more punched members obtained by punching an electromagnetic steel plate are laminated and bonded with an adhesive, and is between adjacent punched members. Each has an unapplied region of the adhesive, and the unapplied region of the adhesive provided for each of the adjacent punched members includes a region that does not overlap in a plan view.

The method for manufacturing a laminated iron core according to one embodiment of the present disclosure is a method for manufacturing a laminated iron core in which a plurality of punched members obtained by punching an electromagnetic steel sheet are laminated, and the electromagnetic steel sheet conveyed by the conveying means is supported by a lifter. To do so, to attach the liquid material to the region to be the punched member by the liquid material supply unit in one main surface of the electromagnetic steel sheet, and to attach the liquid material to the area to be the punched member, and to attach the liquid material to the electrical steel sheet. To form the punching member by punching in the punching section, and to attach the liquid material to the punching member is to be performed in the region to be the punching member, rather than the liquid material supply section. The liquid material is adhered to the electrical steel sheet while avoiding the contact region where the lifter and the electrical steel sheet are in contact with each other on the downstream side and upstream of the adhesion point of the liquid material in the punched portion. including.

1 ... Stator laminated iron core, 1a ... Through hole, 2 ... Yoke part, 3 ... Teeth part, 4 ... Slot, 110 ... Uncoiler, 120 ... Sending device, 121, 122 ... Roller, 130 ... Press processing device, 140 ... Bottom Mold, 141 ... Base, 142 ... Die holder, 143 ... Adhesive supply unit, 146 ... Lifter, 147 ... Discharge port, 149 ... Liquid tank, C1, C2, C3, C4 ... Discharge hole, Ctr ... Controller (control unit), D1, D2, D3, D4 ... Die member, D11, D21, D31, D41 ... Die plate, D12, D22, D32, D42 ... Die, D13, D23, D33, D43 ... Die hole, D44 ... Rotating body, D45 ... Drive mechanism, L1 ... Supply path, L2 ... Piping, P ... Liquid transfer pump, P1, P2, P3, P4 ... Punch.

Claims (7)

It is a manufacturing device for laminated iron cores in which a plurality of punched members obtained by punching plate-shaped members are laminated.
A transport means for transporting the plate-shaped member and
A lifter that supports the plate-shaped member transported by the transport means,
Of the main surface of one of the plate-shaped members transported by the transport means, a liquid material supply unit for adhering the liquid material to the region to be the punched member, and a liquid material supply unit.
The plate-shaped member after the liquid material is attached is punched to form the punched member, and the punched portion.
Have,
The liquid material supply unit is located on the downstream side of the liquid material supply unit, which is the region to be the punching member in the plate-shaped member, and on the upstream side of the punching processing unit. A device for manufacturing a laminated iron core that adheres a liquid material to the plate-shaped member while avoiding a contact region where the lifter and the plate-shaped member come into contact with each other. The apparatus for manufacturing a laminated iron core according to claim 1, further comprising a transshipment means for laminating a plurality of punched members while relatively shifting the angles of the punched members formed by the punched portion. The lifter has a recess extending along the transport direction of the plate-shaped member by the transport means.
The apparatus for manufacturing a laminated iron core according to claim 1 or 2, wherein the liquid material supply unit also adheres the liquid material to a region of the plate-shaped member facing the recess. The apparatus for manufacturing a laminated iron core according to any one of claims 1 to 3, wherein the lifter is provided so that a region different from the region serving as the teeth portion of the punched member becomes the contact region. The lifters on the downstream side of the liquid material supply portion and on the upstream side of the punching processing portion are arranged along the transport direction of the plate-shaped member by the transport means. The apparatus for manufacturing a laminated iron core according to any one of claims 1 to 4. It is a laminated iron core in which three or more punched members obtained by punching a plate-shaped member are laminated and bonded with an adhesive.
Adhesive-uncoated areas are provided between the adjacent punched members.
The unapplied region of the adhesive provided for each of the adjacent punched members is a laminated iron core including a region that does not overlap in a plan view. It is a manufacturing method of a laminated iron core in which a plurality of punched members obtained by punching a plate-shaped member are laminated.
Adhering the liquid material to the region of the main surface of one of the plate-shaped members to be the punched member, and
Supporting the plate-shaped member to be transported by a lifter and
The plate-shaped member after the liquid material is attached is punched to form the punched member.
The attachment of the liquid material is performed on the lifter and the lifter on the downstream side of the region to be the punching member and on the upstream side of the area on which the liquid material is attached. A method for manufacturing a laminated iron core, which comprises adhering the liquid material to the plate-shaped member while avoiding a contact region where the plate-shaped member comes into contact with the plate-shaped member.

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