JP7330976B2 - Metal product manufacturing method and metal product manufacturing apparatus - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a metal product manufacturing method and a metal product manufacturing apparatus.

Patent Literature 1 discloses a front end processing device for punching a front end portion of a strip-shaped metal plate (for example, an electromagnetic steel plate) so that the front end portion has a predetermined shape. The metal plate with the tip portion punched out is normally conveyed to a mold positioned downstream while being clamped by a conveying mechanism.

JP-A-07-204754

By the way, when the metal plate is clamped by the transport mechanism, the metal plate may be displaced in the transport direction. In this case, the punch of the die located on the downstream side may hit the tip of the metal plate, resulting in defective products. On the other hand, in recent years, from the viewpoint of maximizing the material yield of the metal plate, there is a tendency to set the portion (crosspiece portion) of the metal plate between regions to be products to be smaller. In this case, although a larger number of punched members can be obtained from the metal plate, defective products are produced even if the metal plate is slightly displaced in the conveying direction. As a result, the rate of occurrence of defective products increases, and improvement in yield may be suppressed.

Therefore, the present disclosure describes a metal product manufacturing method and a metal product manufacturing apparatus capable of improving the yield while suppressing the occurrence of defective products.

A method for manufacturing a metal product according to one aspect of the present disclosure includes engaging a positioning portion included in a leading end portion of a strip-shaped metal plate with a regulating member, and a state in which the regulating member and the positioning portion are engaged. and gripping the metal plate by the transport mechanism, and transporting the metal plate gripped by the transport mechanism toward the downstream side.

A metal product manufacturing apparatus according to another aspect of the present disclosure includes a conveying mechanism configured to convey a belt-shaped metal plate toward the downstream side, and a positioning portion included in the leading end portion of the metal plate. and a control section. The control unit controls the regulating member so that the regulating member and the positioning unit are engaged with each other, and controls the conveying mechanism so that the conveying mechanism grips the metal plate while the regulating member and the positioning unit are engaged. and a process of controlling the regulating member and the transport mechanism so that the metal plate gripped by the transport mechanism is transported toward the downstream side.

According to the metal product manufacturing method and the metal product manufacturing apparatus according to the present disclosure, it is possible to improve the yield while suppressing the occurrence of defective products.

FIG. 1 is a perspective view showing an example of a laminated stator core. FIG. 2 is a schematic diagram showing an example of a stator laminated core manufacturing apparatus. FIG. 3 is a schematic diagram showing an example of the tip processing device. FIG. 4 is a schematic diagram showing an example of a punching device. FIG. 5 is a diagram for explaining an example of a method for processing the tip portion of an electromagnetic steel sheet. FIG. 6 is a diagram for explaining an example of a method of positioning the electromagnetic steel sheets. FIG. 7 is a diagram showing an example of a punching layout. FIG. 8 is a diagram for explaining another example of the positioning method of the electromagnetic steel sheets. FIG. 9 is a diagram for explaining another example of the positioning method of the electromagnetic steel sheets. FIG. 10 is a diagram for explaining another example of the positioning method of the electromagnetic steel sheets. FIG. 11 is a diagram for explaining another example of the positioning method of the electromagnetic steel sheets. FIG. 12 is a diagram for explaining another example of the positioning method of the electromagnetic steel sheets. FIG. 13 is a diagram for explaining another example of the positioning method of the electromagnetic steel sheets.

An example of an embodiment according to the present disclosure will be described below in more detail with reference to the drawings. In the following description, the same reference numerals will be used for the same elements or elements having the same functions, and redundant description will be omitted.

[Configuration of stator laminated core]
First, the configuration of a laminated stator core 1 will be described with reference to FIG. The stator laminated core 1 is part of a stator. The stator is obtained by attaching windings to a stator laminated core 1 . A motor is constructed by combining a stator with a rotor. The stator laminated core 1 has a cylindrical shape as shown in FIG. That is, the central portion of the laminated stator core 1 is provided with a through hole 1a (center hole) extending along the central axis Ax. A rotor can be arranged in the through hole 1a.

The laminated stator core 1 is a laminate in which a plurality of punched members W are stacked. The punched member W is a plate-like body obtained by punching a strip-shaped electromagnetic steel sheet ES (metal plate), which will be described later, into a predetermined shape. The stator laminated core 1 may be configured by so-called rolling. "Rolling" means stacking a plurality of punched members W while shifting the angles of the punched members W relatively. The rotation is mainly performed for the purpose of canceling the plate thickness deviation of the laminated stator core 1 . The angle of transduction may be set to any size.

A stator laminated core 1 includes a yoke portion 2 , a plurality of teeth portions 3 , and a plurality of crimped portions 4 . 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 can be set to various sizes depending on the application and performance of the motor.

Each tooth portion 3 extends along the radial direction of 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 protrudes from the inner edge of the yoke portion 2 toward the central axis Ax side. In laminated stator core 1 , 12 tooth portions 3 are formed integrally with yoke portion 2 . Each tooth portion 3 is arranged at approximately equal intervals in the circumferential direction of the yoke portion 2 . Slots 5 functioning as spaces for arranging windings (not shown) are defined between adjacent tooth portions 3 .

The crimped portion 4 may be provided on the yoke portion 2 , may be provided on each tooth portion 3 , or may be provided on both the yoke portion 2 and each tooth portion 3 . The punched members W adjacent to each other in the height direction are fastened by the caulked portion 4 . Specifically, the crimped portions 4 are composed of crimps (not shown) formed on the punched members W forming layers other than the bottom layer of the laminated stator core 1 and the punched members forming the bottom layer of the laminated stator core 1. through holes (not shown) formed in W. A crimped protrusion is joined to an adjacent crimped recess or through-hole. The through-holes have a function of preventing the subsequently formed punched member W from being fastened by caulking to the already manufactured laminated stator core 1 when the laminated stator core 1 is continuously manufactured. .

A plurality of punched members W may be fastened together by various known methods in place of the crimped portion 4 . The plurality of punched members W may be joined together using, for example, an adhesive or a resin material, or may be joined together by welding. Alternatively, temporary crimping is provided on the punched member W, a plurality of punched members W are fastened through the temporary crimping to obtain a laminated body, and then the temporary crimping is removed from the laminated body, thereby obtaining a stator laminated core. You can get 1. The term "temporary crimping" means crimping that is used to temporarily integrate a plurality of punched members W and that is removed in the process of manufacturing a product (stator laminated core 1 or stator).

[Stator laminated core manufacturing equipment]
Next, a manufacturing apparatus 100 for the laminated stator core 1 will be described with reference to FIG. A manufacturing apparatus 100 is an apparatus for manufacturing a stator laminated core 1 from an electromagnetic steel sheet ES (workpiece). The manufacturing apparatus 100 includes an uncoiler 110, a delivery device 120 (conveyance mechanism), a front end processing device 130 (processing mechanism), a punching device 140, and a controller Ctr (control section).

The uncoiler 110 rotatably holds the coil material 111, which is a strip-shaped electromagnetic steel sheet ES wound in a coil shape, in a state in which the coil material 111 is mounted. The delivery device 120 has a pair of rollers 121 and 122 that sandwich the electromagnetic steel sheet ES from above and below. The pair of rollers 121 and 122 rotates and stops based on an instruction signal from the controller Ctr, and intermittently conveys the electromagnetic steel sheet ES toward the front end processing device 130 in sequence. Note that the uncoiler 110 may be configured to send out the electromagnetic steel sheets ES from the upstream side toward the downstream side, or may be configured to pull in the electromagnetic steel sheets ES from the upstream side to the downstream side. , or combinations thereof.

The tip processing device 130 operates based on an instruction signal from the controller Ctr. The front end processing device 130 has a function of processing the front end portion ESa of the electromagnetic steel sheet ES intermittently conveyed by the delivery device 120 into a predetermined shape.

The punching device 140 operates based on an instruction signal from the controller Ctr. The punching device 140 has a function of sequentially punching the electromagnetic steel sheets ES intermittently conveyed by the feeding device 120 to form the punched members W, and sequentially stacking the punched members W obtained by the punching. and the function of manufacturing the stator laminated core 1.

The controller Ctr provides instructions for operating the feeding device 120, the tip processing device 130, and the punching device 140 based on, for example, a program recorded in a recording medium (not shown) or an operation input from an operator. Generate a signal and send it to them.

[Tip processing equipment]
Next, with reference to FIG. 3, the tip processing device 130 will be described in more detail. The tip processing device 130 includes a base 131, a lower die 132, a die plate 133, a stripper 134, an upper die 135, a top plate 136, a press 137, a lifting tool 138, and punches A1 and A2. .

The base 131 supports the lower mold 132 placed on the base 131 . The lower mold 132 supports the die plate 133 placed on the lower mold 132 . The lower die 132 is provided with discharge holes C1 and C2 through which materials punched from the electromagnetic steel sheet ES (for example, waste materials) are discharged at positions corresponding to the punches A1 and A2, respectively.

The die plate 133 has a function of processing the tip portion ESa together with the punches A1 and A2. The die plate 133 is provided with dies D1 and D2 at positions corresponding to the punches A1 and A2, respectively. Through holes D1a and D2a (die holes) extending in the vertical direction are provided in the dies D1 and D2, respectively. Each through-hole D1a, D2a communicates with the corresponding discharge hole C1, C2. The diameters of the through holes D1a and D2a are set so that the tip portions of the corresponding punches A1 and A2 can be inserted through them and are slightly larger than the tip portions.

The stripper 134 has a function of removing from the punches A1 and A2 the magnetic steel sheet ES that has bitten into the punches A1 and A2 when the magnetic steel sheet ES is processed by the punches A1 and A2. The stripper 134 is provided with through holes F1 and F2 at positions corresponding to the punches A1 and A2, respectively. Each of the through holes F1 and F2 extends vertically and communicates with the through holes D1a and D2a of the corresponding dies D1 and D2. Lower portions of the punches A1 and A2 are inserted through the through holes F1 and F2, respectively. The lower portions of punches A1 and A2 are slidable within respective through holes F1 and F2.

The upper die 135 is positioned above the stripper 134 . Base portions (upper portions) of the punches A<b>1 and A<b>2 are fixed to the upper die 135 . Therefore, the upper die 135 holds the punches A1 and A2. An accommodation space 135a located on the top plate 136 side and extending in the vertical direction and a through hole 135b penetrating downward from the accommodation space 135a are provided in the upper mold 135 on the upstream side and the downstream side of the tip processing device 130, respectively. is provided.

The top plate 136 is positioned above the upper mold 135 . The top plate 136 holds the upper mold 135 . The press machine 137 is positioned above the top plate 136 . A piston of the press machine 137 is connected to the top plate 136 and operates based on an instruction signal from the controller Ctr. When the press machine 137 operates, the piston expands and contracts, and the stripper 134, the upper die 135, the top plate 136, the hanger 138, and the punches A1 and A2 (hereinafter referred to as the movable portion 139) move up and down as a whole. .

The hanger 138 hangs and holds the stripper 134 on the upper die 135 . The hanger 138 has a long rod portion 138a and a head portion 138b provided at the upper end of the rod portion 138a. A lower end portion of the rod portion 138 a is fixed to the stripper 134 . An upper end portion of the rod portion 138 a is inserted through the through hole 135 b of the upper die 135 . The head portion 138 b has a diameter larger than that of the lower end portion and is housed in the housing space 135 a of the upper die 135 . Therefore, the head 138b can move up and down with respect to the upper die 135 within the housing space 135a.

The punches A1 and A2 have the function of processing the tip portion ESa together with the die plate 133 (the dies D1 and D6). The punches A1 and A6 are arranged in this order from the upstream side (sending device 120 side) of the leading end processing device 130 toward the downstream side.

[Punching device]
Next, the punching device 140 will be described with reference to FIG. The punching device 140 includes a base 141, a lower die 142, a die plate 143, a stripper 144, an upper die 145, a top plate 146, a press machine 147, a lifting tool 148, punches A3 to A7, and positioning. It includes pins B1-B4 and lifting pins G1 and G2.

The base 141 supports the lower mold 142 placed on the base 141 . The lower mold 142 supports the die plate 143 placed on the lower mold 142 . The lower mold 142 is provided with discharge holes C3 to C7 through which materials punched from the electromagnetic steel sheet ES (for example, punched members W, waste materials, etc.) are discharged at positions corresponding to the punches A3 to A7, respectively. . A cylinder for supporting a punched member W punched from the electromagnetic steel sheet ES is arranged in the discharge hole C7. On the cylinder, a plurality of punched members W are laminated while the crimped portions 4 are fastened together to form the laminated stator core 1 . The formed stator laminated core 1 is discharged out of the punching device 140 .

The die plate 143 has a function of forming the punched member W together with the punches A3 to A7. The die plate 143 is provided with dies D3 to D7 at positions corresponding to the punches A3 to A7, respectively. Each of the dies D3 to D7 is provided with through holes D3a to D7a (die holes) extending in the vertical direction. Each of the through holes D3a-D7a communicates with the corresponding discharge holes C3-C7. The diameters of the through holes D3a to D7a are set so that the tip portions of the corresponding punches A3 to A7 can be inserted and are slightly larger than the tip portions.

The die plate 143 is provided with insertion holes E1 to E4 at positions corresponding to the positioning pins B1 to B4, respectively. The die plate 143 is provided with insertion holes E5 and E6 through which the lifting pins G1 and G2 are inserted on the upstream side of the die D3.

The stripper 144 has a function of removing from the punches A3 to A7 the magnetic steel sheets ES that have bitten into the punches A3 to A7 when the magnetic steel sheets ES are punched by the punches A3 to A7. The stripper 144 extends from the upstream side toward the downstream side so as to overlap the dies D3 to D7 but not the lift pins G1 and G2.

The stripper 144 is provided with through holes F3 to F7 at positions corresponding to the punches A3 to A7, respectively. Each of the through holes F3 to F7 extends vertically and communicates with the through holes D3a to D7a of the corresponding dies D3 to D7. Lower portions of the punches A3 to A7 are inserted into the through holes F3 to F7, respectively. The lower portions of the punches A3-A7 are slidable within the respective through-holes F3-F7.

The stripper 144 is provided with through holes F8 to F11 at positions corresponding to the positioning pins B1 to B4, respectively. Each of the through holes F8 to F11 extends vertically and communicates with the corresponding through hole E1 to E4. Lower portions of the positioning pins B1 to B4 are inserted through the through holes F8 to F11, respectively. The lower portions of the positioning pins B1-B4 are slidable in the through-holes F8-F11, respectively.

The upper die 145 is positioned above the stripper 144 . Base portions (upper portions) of the punches A3 to A7 and the positioning pins B1 to B4 are fixed to the upper die 145. As shown in FIG. Therefore, the upper die 145 holds the punches A3 to A7 and the positioning pins B1 to B4. At the ends of the upper mold 145 on the upstream side and the downstream side of the punching device 140, respectively, there is a housing space 145a located on the top plate 146 side and extending in the vertical direction, and a housing space 145a extending downward from the housing space 145a. A through hole 145b is provided.

The top plate 146 is positioned above the upper mold 145 . The top plate 146 holds the upper mold 145 . The press machine 147 is positioned above the top plate 146 . A piston of the press machine 147 is connected to the top plate 146 and operates based on an instruction signal from the controller Ctr. When the press machine 147 operates, the piston expands and contracts, and the stripper 144, the upper mold 145, the top plate 146, the hanger 148, the punches A3 to A7, and the positioning pins B1 to B4 (hereinafter referred to as the movable portion 149) move. move up and down as a whole.

The hanger 148 hangs and holds the stripper 144 on the upper die 145 . The hanger 148 has an elongated rod portion 148a and a head portion 148b provided at the upper end of the rod portion 148a. A lower end portion of the rod portion 148 a is fixed to the stripper 144 . The upper end of the rod portion 148a is inserted through the through hole 145b of the upper die 145. As shown in FIG. The head portion 148b has a larger diameter than the lower end portion and is housed in the housing space 145a of the upper die 145 . Therefore, the head 148b can move up and down with respect to the upper die 145 within the accommodation space 145a.

The punches A3 to A7 have the function of punching the electromagnetic steel sheet ES into a predetermined shape together with the die plate 143 (dies D3 to D7). The punches A3 to A7 are arranged in this order from the upstream side of the punching device 140 (the feeding device 120 side) to the downstream side.

A plurality of punches A1 (for example, two punches A1) having substantially the same shape are lined up in the width direction of the electrical steel sheet ES (hereinafter simply referred to as "width direction"). A plurality of punches A2 (for example, two punches A2) having substantially the same shape are lined up in the width direction. A plurality of punches A3 (for example, two punches A3) having substantially the same shape are arranged in the width direction. A plurality of punches A4 (for example, two punches A4) having substantially the same shape are arranged in the width direction. A plurality of punches A5 (for example, two punches A5) having substantially the same shape are lined up in the width direction. A plurality of punches A6 (for example, two punches A6) having substantially the same shape are arranged in the width direction.

The positioning pins B1 to B4 have the function of positioning the electromagnetic steel sheet ES on the die plate 143 when the electromagnetic steel sheet ES is punched by the punches A3 to A7. The positioning pins B1 to B4 are arranged in this order from the upstream side of the punching device 140 (the delivery device 120 side) to the downstream side.

The lifting pins G1 and G2 are configured to be movable up and down through the insertion holes E5 and E6, respectively. Specifically, each of the lifting pins G1 and G2 moves up and down between a raised position where the tip is positioned above the die plate 143 and a lowered position where the tip is positioned within the insertion holes E5 and E6.

The elevating pin G1 (stopper member) has a function of contacting the leading edge ESb (described later) of the electromagnetic steel plate ES to position the electromagnetic steel plate ES at the position of the elevating pin G1 when in the elevated position. In other words, the lifting pins G1 are configured to be able to restrict movement of the electromagnetic steel sheets ES in the conveying direction. The lifting pin G2 (restricting member) is located upstream of the lifting pin G1. The elevating pin G2 has a function of elevating toward the electromagnetic steel sheet ES whose movement in the conveying direction is restricted by the elevating pin G1 and engaging with a positioning portion (described later in detail) at the tip portion ESa of the electromagnetic steel sheet ES. .

[Manufacturing method of stator laminated core]
Next, a method for manufacturing the laminated stator core 1 will be described with reference to FIGS. 2 to 7. FIG. First, the electromagnetic steel sheet ES is conveyed to the leading end processing device 130 by the delivery device 120, and when the leading end portion ESa of the magnetic steel plate ES reaches the punches A1 and A2, the controller Ctr instructs the press machine 137 to move the press machine 137. The portion 139 is pushed downward toward the die plate 133 . Even after the stripper 134 reaches the die plate 133 and holds the electromagnetic steel sheet ES between them, the controller Ctr continues to instruct the press machine 137, and the press machine 137 further pushes the movable portion 139 downward.

At this time, the stripper 134 does not move, but the tip portions of the punches A1 and A2 move through the through holes F1 and F2 of the stripper 134, respectively, and the through holes D1a and D1a of the corresponding dies D1 and D2 of the die plate 133 move. D2a is inserted. Therefore, the tip portion ESa is punched out. Specifically, as shown in FIG. 5, a punch A1 forms a through hole R1 (positioning portion; hole portion) in a region of the electromagnetic steel sheet ES that does not become a product and at a position corresponding to the lifting pin G2. . Further, the punch A2 punches the tip portion ESa of the electromagnetic steel sheet ES into a predetermined shape, and processes the tip edge ESb of the electromagnetic steel sheet ES so as to have an uneven shape. The uneven tip edge ESb formed by the punch A2 extends so as to pass through a portion (crosspiece portion) between regions of the electromagnetic steel sheet ES that will be the product. Waste materials punched by the punches A1 and A2 are discharged from the discharge holes C1 and C2 of the lower die 132. As shown in FIG. Note that the punch A2 may cut the tip portion ESa so as to form the tip edge ESb on the electromagnetic steel sheet ES. After that, the press machine 137 operates to raise the movable part 139 . The movable part 139 remains raised until the trailing end of one roll of the electromagnetic steel sheet ES passes through the front end processing device 130 and the front end portion ESa of the next magnetic steel plate ES is processed by the front end processing device 130 . be done.

Next, the controller Ctr instructs the lifting pin G1 to raise the lifting pin G1 to the raised position. Next, the controller Ctr instructs the delivery device 120 to convey the electromagnetic steel sheet ES downstream until the leading edge ESb comes into contact with the lifting pin G1 (see FIG. 6). Next, the controller Ctr instructs the delivery device 120 to release the clamping of the electromagnetic steel sheets ES by the rollers 121 and 122 . The electromagnetic steel sheets ES may be conveyed manually in a state in which the clamping of the electromagnetic steel sheets ES by the rollers 121 and 122 is released. Next, the controller Ctr instructs the lifting pin G2 to raise the lifting pin G2 to the raised position while the leading edge ESb is in contact with the lifting pin G1. As a result, the lifting pin G2 is inserted into the through hole R1 (see the same). Next, the controller Ctr instructs the delivery device 120 to clamp the electromagnetic steel sheets ES again by the rollers 121 and 122 . Next, the controller Ctr instructs the lifting pins G1 and G2 to lower the lifting pins G1 and G2 to the lowered position.

Next, the controller Ctr instructs the delivery device 120 to convey the electromagnetic steel sheet ES downstream until the processed portion of the electromagnetic steel sheet ES reaches the punch A3. Next, the controller Ctr instructs the press machine 147 to raise and lower the movable part 149 . As a result, the electromagnetic steel sheet ES is punched along a predetermined shape by a plurality of punches A3 arranged in the width direction, and a pair of through holes R3 are formed in the vicinity of both side edges of the electromagnetic steel sheet ES (position S1 in FIGS. 4 and 7). reference). The punched waste material is discharged from the discharge hole C<b>3 of the lower die 142 .

Next, the controller Ctr instructs the delivery device 120 to convey the electromagnetic steel sheet ES downstream until the processed portion of the electromagnetic steel sheet ES reaches the punch A4. Next, the controller Ctr instructs the press machine 147 to raise and lower the movable part 149 . As a result, the electromagnetic steel sheet ES is punched along a predetermined shape by a plurality of punches A4 arranged in the width direction, and the punched portions R4 ₁ and R4 ₂ are formed so as to be arranged in the width direction (positions shown in FIGS. 4 and 7). S3). The punched waste material is discharged from the discharge hole C<b>4 of the lower die 142 . When punching the electromagnetic steel sheet ES with the punch A4, the positioning pins B1 and B2 are inserted into the through holes R3 (see positions S2 and S4 in FIGS. 4 and 7).

Each of the punched portions R4 ₁ and R4 ₂ is composed of a plurality of circular through holes. Each through-hole corresponds to a slot 5 .

Next, the controller Ctr instructs the delivery device 120 to convey the electromagnetic steel sheet ES downstream until the portion to be processed of the electromagnetic steel sheet ES reaches the punch A5. Next, the controller Ctr instructs the press machine 147 to raise and lower the movable part 149 . As a result, the electromagnetic steel sheet ES is punched along a predetermined shape by a plurality of punches A5 arranged in the width direction, and the punched portions R5 ₁ and R5 ₂ are formed so as to be arranged in the width direction (positions shown in FIGS. 4 and 7). S5). The punched waste material is discharged from the discharge hole C<b>5 of the lower die 142 . When punching the electromagnetic steel sheet ES with the punch A5, the positioning pins B2 and B3 are inserted into the through holes R3 (see positions S4 and S6 in FIGS. 4 and 7).

Each of the punched portions R5 ₁ and R5 ₂ is composed of a plurality of circular through holes. Each through-hole forming the punched portion _R5-1 is positioned between a plurality of through-holes forming the punched portion _R4-1 . Each through-hole forming the punched portion _R52 is positioned one by one between a plurality of through-holes forming the punched portion _R42 . Each through-hole of the punched portions R5 ₁ and _R5-2 corresponds to the through-hole of the crimped portion 4 . In addition, when forming the crimping of the crimping portion 4, punching of the electromagnetic steel sheet ES by the punch A5 is not performed.

Next, the controller Ctr instructs the delivery device 120 to convey the electromagnetic steel sheet ES downstream until the portion of the electromagnetic steel sheet ES to be processed reaches the punch A6. Next, the controller Ctr instructs the press machine 147 to raise and lower the movable part 149 . As a result, the electromagnetic steel sheet ES is processed along a predetermined shape by a plurality of punches A6 aligned in the width direction, and the processed portions R6 ₁ and R6 ₂ are formed so as to be aligned in the width direction (position S7 in FIGS. 4 and 7). reference). At this time, when forming the processed portion _R61 , a region including the through hole R1 is punched out of the electromagnetic steel sheet ES. Waste materials punched out of the processed portions R6 ₁ and R6 ₂ are discharged from the discharge hole C6 of the lower die 142. As shown in FIG. When punching the electromagnetic steel sheet ES with the punch A6, the positioning pins B3 and B4 are inserted into the through holes R3 (see positions S6 and S8 in FIGS. 4 and 7).

Each of the processed portions R6 ₁ and R6 ₂ is composed of a plurality of uneven portions arranged in a circular shape and one through hole positioned in the center thereof. Each uneven portion forming the processed portion _R6-1 is positioned between a plurality of through-holes forming the punched portion _R4-1 . Each uneven portion forming the processed portion _R62 is positioned between a plurality of through holes forming the punched portion _R42 . Each uneven portion corresponds to the crimping of the crimping portion 4 . Each through hole of the processed portions R6 ₁ and R6 ₂ corresponds to the through hole 1a.

Next, the controller Ctr instructs the delivery device 120 to convey the electromagnetic steel sheet ES downstream until the processed portion of the electromagnetic steel sheet ES reaches the punch A7. Next, the controller Ctr instructs the press machine 147 to raise and lower the movable part 149 . As a result, the electromagnetic steel sheet ES is punched along a predetermined shape by a plurality of punches A6 arranged in the width direction, and the punched portions R7 ₁ and R7 ₂ are formed so as to be arranged in the width direction (positions shown in FIGS. 4 and 7). S9). When punching the electromagnetic steel sheet ES with the punch A7, the positioning pin B4 is inserted into the through hole R3 (see position S8 in FIGS. 4 and 7).

Each punched portion R7 ₁ , R7 ₂ corresponds to a punched member W. As shown in FIG. The punched parts R7 ₁ and R7 ₂ punched out from the electromagnetic steel sheet ES are laminated as the punched member W in the discharge hole C7 while being fastened to the already punched punched member W via the crimped part 4. . The laminated stator core 1 is formed by repeating the above steps.

[Action]
In the embodiment described above, the electromagnetic steel sheets ES are gripped by the delivery device 120 in a state where the through holes R1 are engaged with the lifting pins G2, so the deviation of the electromagnetic steel sheets ES in the conveying direction is suppressed. Therefore, even if the crosspiece portion is set to be small, punching is performed at an appropriate position, so defective products are less likely to occur. Therefore, it is possible to improve the yield.

In the above embodiment, the through hole R1 is formed in the tip portion ESa of the electromagnetic steel sheet ES before positioning the electromagnetic steel sheet ES by the lifting pin G2. Therefore, it is possible to previously form the through holes R1 in the electromagnetic steel sheets ES at positions corresponding to the lifting pins G2.

In the above embodiment, the through hole R1 is engaged with the lifting pin G2 by inserting the lifting pin G2 into the through hole R1. Therefore, displacement of the electromagnetic steel sheets ES is suppressed not only in the conveying direction but also in the width direction (direction intersecting the conveying direction). Therefore, it is possible to further improve the yield.

In the above-described embodiment, the lifting pin G2 is inserted into the through hole R1 while the tip edge ESb of the electromagnetic steel sheet ES is in contact with the lifting pin G1. Therefore, the lifting pins G2 can be easily inserted into the through holes R1 of the electromagnetic steel sheets ES positioned in the conveying direction by the lifting pins G1.

In the above embodiment, the through-hole R1 is formed in a region of the electromagnetic steel sheet ES that will not become a product (punched member W). Therefore, the through holes R1 used for positioning the electromagnetic steel sheets ES do not affect the product (stator laminated core 1).

[Modification]
Although the embodiments according to the present disclosure have been described in detail above, various modifications may be made to the above embodiments without departing from the scope and spirit of the claims.

(1) As shown in FIG. 6, the external shape of the lifting pin G2 may be set smaller than the internal size of the through hole R1. In this case, when the lifting pin G2 is inserted into the through hole R1, it becomes difficult for the lifting pin G2 to get caught in the through hole R1. Therefore, even if the electromagnetic steel sheets ES are not accurately positioned in advance, the lift pins G2 can be easily inserted into the through holes R1.

More specifically, the clearance L1 between the through hole R1 and the lifting pin G2 is 1 of the distance L2 between the punched portions R7 ₁ (described later) or the punched portions R7 ₂ (described later) in the conveying direction. It may be set smaller than /2. In this case, even if the electromagnetic steel sheets ES are displaced in the conveying direction while the lifting pins G2 are inserted into the through holes R1, the dislocation is easily accommodated in the crosspiece portion. Therefore, it becomes possible to further suppress the occurrence of defective products.

(2) In the above embodiment, the front end processing device 130 does not include the punch A1, the punching device 140 does not include the lifting pin G2, and the through hole R1 may not be formed in the electromagnetic steel sheet ES. . In this example, the positioning of the electromagnetic steel sheet ES may be performed by bringing the front edge ESb into contact with the lifting pin G1. That is, the lifting pin G1 may function as a regulating member, and the leading end edge ESb may function as a positioning portion. In this case, the electromagnetic steel sheets ES are positioned at least in the conveying direction. Therefore, it is possible to suppress the displacement of the electrical steel sheets ES by a very simple method.

(3) As shown in FIG. 8, a notch R10 (positioning portion; hole) may be formed in the side edge of the electromagnetic steel sheet ES. Although the shape of the notch R10 is not particularly limited, it may be rectangular, triangular, semicircular, trapezoidal, or the like, for example. In this case, the positioning of the electromagnetic steel sheets ES can be performed in the conveying direction and the width direction by inserting the lifting pins G2 into the cutouts R10.

(4) As shown in FIG. 9, a notch R11 (positioning portion; hole) may be formed in the tip edge ESb of the electromagnetic steel sheet ES. The notch R11 is shaped such that its width becomes narrower toward the tip edge ESb. In this case, the positioning of the electromagnetic steel sheets ES can be performed in the conveying direction and the width direction by inserting the lifting pin G2 having a shape corresponding to the notch R11 into the notch R11.

(5) As shown in FIG. 10, the through hole R1 may be partially overlapped with the punched portion _R71 . In this case, since the punched member W in which the notch that is a part of the through hole R1 is formed is included in the product, the punched member W punched from the electromagnetic steel sheet ES of a different lot is determined by using the notch as a mark. It is possible to easily identify the mixture in (stator laminated core 1).

(6) As shown in FIG. 11, at least one notch R12 (positioning portion) may be formed in the side edge of the electromagnetic steel sheet ES. One notch R12 may be formed in each side edge of the electromagnetic steel sheet ES. The notch R12 includes an inclined edge that is inclined outward in the width direction of the electromagnetic steel sheet ES toward the rear end side of the electromagnetic steel sheet ES. Further, as shown in FIG. 11, the punching device 140 may include at least one pressing pin G3 (restricting member) instead of the elevating pin G2. At least one pressing pin G3 may be arranged corresponding to at least one notch R12. For example, when one notch R12 is formed in each side edge of the electromagnetic steel sheet ES, one pressing pin G3 may be arranged so as to correspond to each notch R12. The pressing pin G3 is biased toward the side edge of the electromagnetic steel sheet ES by a biasing member M1 such as a spring. Therefore, the pressing pin G3 presses the side edge of the electromagnetic steel sheet ES in the width direction of the electromagnetic steel sheet ES. The pressing pin G3 includes an inclined portion corresponding to the inclined edge of the notch R12.

According to the embodiment illustrated in FIG. 11, when the electromagnetic steel sheet ES is conveyed toward the pressing pin G3, the tip of the electromagnetic steel sheet ES comes into contact with the inclined portion of the pressing pin G3. Therefore, when the electromagnetic steel sheet ES is further conveyed, the electromagnetic steel sheet ES advances downstream while pushing the pressing pin G3 outward in the width direction of the electromagnetic steel sheet ES. Thereafter, when the notch R12 of the electromagnetic steel sheet ES reaches the pressing pin G3, the pressing pin G3 enters the notch R12 and presses the side edge of the tip portion ESa. As described above, in the process of conveying the electromagnetic steel sheet ES, the pressing pin G3 naturally enters the notch R12, thereby suppressing the displacement of the electromagnetic steel sheet ES. Therefore, it is possible to further improve the yield. On the other hand, when the electromagnetic steel sheet ES is further conveyed while the pressing pin G3 is in the notch R12, the electromagnetic steel sheet ES moves downstream while the inclined portion of the pressing pin G3 and the inclined edge of the notch R12 are in contact with each other. As it advances, the pressing pin G3 is pushed out of the notch R12. That is, when the electromagnetic steel sheet ES advances, the pressing pin G3 is naturally pushed out of the notch R12 without using a driving source or the like. Therefore, the spontaneous movement of the pressing pin G3 can prevent the pressing pin G3 from interfering with the progress of the electromagnetic steel sheet ES.

(7) In the embodiment illustrated in FIG. 11, the pressing pin G3 is biased toward the side edge of the electromagnetic steel sheet ES by the biasing member M1 such as a spring. The pressing pin G3 may be driven horizontally by the mechanism M2. The direct acting mechanism M2 may be, for example, a hydraulic actuator, a pneumatic actuator, an electric actuator, an electromagnetic solenoid, or the like. The linear motion mechanism M2 may be configured to bring the pressing pin G3 closer to or away from the side edge of the electromagnetic steel sheet ES based on the instruction signal from the controller Ctr. The controller Ctr may control the linear motion mechanism M2 so that the pressing pin G3 approaches the side edge of the electromagnetic steel sheet ES at the same timing as or close to the elevation of the lifting pin G1 to the raised position. The controller Ctr may control the linear motion mechanism M2 so as to release the pressing of the side edge of the electromagnetic steel sheet ES by the pressing pin G3 at the same timing as or close to when the pressing pin G3 enters the notch R12. good. The controller Ctr may, for example, release the pressing of the side edge of the electromagnetic steel sheet ES by the pressing pin G3 by controlling the linear motion mechanism M2 so that the pressing pin G3 is separated from the side edge of the electromagnetic steel sheet ES. For example, the controller Ctr stops the application of force from the linear motion mechanism M2 to the pressing pin G3 so that the pressing pin G3 can slide freely, thereby preventing the pressing pin G3 from pressing the side edge of the electromagnetic steel sheet ES. You may cancel. According to the embodiment illustrated in FIG. 12, the side edge of the electromagnetic steel sheet ES is not pressed by the pressing pin G3 while the electromagnetic steel sheet ES is moving. Therefore, it becomes difficult for the frictional force to act between the electromagnetic steel sheet ES and the pressing pin G3, so that it is possible to suppress the occurrence of burrs or the like on the side edges of the electromagnetic steel sheet ES.

(8) As shown in FIG. 13, the punching device 140 may include a pressing pin G4 (restricting member) and a linear motion mechanism M3 instead of the lifting pin G2. The pressing pin G4 and the linear motion mechanism M3 may be arranged upstream of the lifting pin G1. The pressing pin G4 and the linear motion mechanism M3 may be arranged above the electromagnetic steel sheet ES. may be provided. When the pressing pin G4 and the linear motion mechanism M3 are provided outside the punching device 140, the amount of expansion and contraction of the pressing pin G4 can be adjusted without being affected by the elevation of the upper die 145, Maintenance of the pin G4 and the linear motion mechanism M3 can be easily performed. The direct acting mechanism M3 may be, for example, a hydraulic actuator, a pneumatic actuator, an electric actuator, an electromagnetic solenoid, or the like. The linear motion mechanism M3 may be configured to bring the pressing pin G4 closer to or away from the surface S of the electromagnetic steel sheet ES based on the instruction signal from the controller Ctr. The controller Ctr may control the linear motion mechanism M3 so that the pressing pin G4 presses the surface S of the electromagnetic steel sheet ES at the same timing as or close to the elevation of the lifting pin G1 to the raised position. According to the embodiment illustrated in FIG. 13, it is possible to suppress displacement of the electromagnetic steel sheet ES by a very simple method of pressing the pressing pin G4 against the surface of the electromagnetic steel sheet ES.

(9) In the above embodiment, the case of so-called "multiple-row processing" in which the punched members W are formed in a set of multiple rows from the electromagnetic steel sheet ES was described, but the present disclosure is applied to single-row processing. may apply.

(10) In the above embodiment, the non-split annular laminated stator core 1 has been described. may Alternatively, the present disclosure may be applied to a laminated stator core 1 in which a plurality of core pieces are directly connected by connecting portions, and the connecting portions are bent to form an annular shape.

(11) The present disclosure may be applied not only to the laminated stator core 1 but also to various metal products such as laminated rotor cores, lead frames used as internal wiring in semiconductor packages, and separators for fuel cells.

(12) The present disclosure is applied to so-called "co-cutting" in which the punched members W that form the stator laminated core 1 and the punched members that form the rotor laminated core are formed from the same electromagnetic steel sheet ES. good too.

(13) In the above embodiment, the case of punching one electromagnetic steel sheet ES has been described, but the present disclosure may also be applied to the case of simultaneously punching a plurality of electromagnetic steel sheets ES in a superimposed state.

(14) In the above embodiment, the tip processing device 130 and the punching device 140 are separate units, but they may be integrated.

(15) The tip processing device 130 does not have to include the punch A2. In other words, the tip edge ESb of the electromagnetic steel sheet ES does not have to be processed to be uneven.

(16) A pair of guide rails may be arranged along the side edge of the electromagnetic steel sheet ES, and the electromagnetic steel sheet ES may be positioned in the width direction by the guide rails. In this case, the pressing pin G4 and the linear motion mechanism M3 illustrated in FIG. 13 may be held by the guide rail.

[Example]
Example 1. A method for manufacturing a metal product (1) according to one example of the present disclosure includes engaging a positioning portion (R1) at a tip portion (ESa) of a strip-shaped metal plate (ES) with a regulating member (G2); Holding the metal plate (ES) by the transport mechanism (120) while the regulating member (G2) is engaged with the positioning part (R1); ES) downstream. In this case, since the metal plate is gripped while the positioning portion is engaged with the regulating member, displacement of the metal plate in the conveying direction is suppressed. Therefore, even if the crosspiece portion is set to be small, punching is performed at an appropriate position, so defective products are less likely to occur. Therefore, it is possible to improve the yield.

Example 2. The method of Example 1 may further comprise forming a positioning portion (R1) on the tip portion (ESa) prior to engaging the positioning portion (R1) with the restricting member (G2). In this case, it is possible to form a positioning portion suitable for the restricting member in advance at the tip portion.

Example 3. In the method of Example 1 or Example 2, conveying the metal plate (ES) toward the downstream side releases the engagement of the regulating member (G2) with the positioning portion (R1), and the conveying mechanism (120) It may include conveying the gripped metal sheet (ES) downstream. In this case, since the regulating member is disengaged from the positioning portion during transportation of the metal plate, the regulating member does not interfere with transportation of the metal plate.

Example 4. In the method of Example 3, engaging the positioning portion (ESb) and the regulating member (G1) includes bringing the tip (ESb) of the metal plate (ES) into contact with the regulating member (G1). good too. In this case, it is possible to position the metal plate in the conveying direction by a very simple method.

Example 5. In the method of Example 3 or Example 4, engaging the positioning portion (R1) and the regulating member (G2) is performed by inserting the regulating member (G2) into the hole (R1) provided in the tip portion (ESa). may include inserting a In this case, since the regulating member is inserted into the hole, displacement of the metal plate is suppressed not only in the conveying direction but also in the direction crossing the conveying direction. Therefore, it is possible to further improve the yield.

Example 6. The method of Example 3 further includes bringing the tip (ESb) of the metal plate (ES) into contact with the stopper member (G1) before engaging the positioning portion (R1) and the regulating member (G2); The engagement between the positioning portion (R1) and the regulating member (G2) is provided at the tip portion (ESa) while the tip (ESb) of the metal plate (ES) is in contact with the stopper member (G1). inserting a regulating member (G2) into the hole (R1) provided. In this case, the restricting member can be easily inserted into the hole of the metal plate positioned in the conveying direction by the stopper member.

Example 7. In the method of Example 5 or Example 6, the outer shape of the regulating member (G2) may be smaller than the inner size of the hole (R1). In this case, when the restricting member is inserted into the hole, the restricting member is less likely to get caught in the hole. Therefore, even if the metal plate is not accurately positioned in advance, the restricting member can be easily inserted into the hole.

Example 8. In the method of Example 7, the clearance (L1) between the regulating member (G2) and the hole (R1) in the conveying direction of the metal plate (ES) is the product (W) in the conveying direction of the metal plate (ES). It may be smaller than 1/2 of the interval (L2) between the regions (R7 ₁ , R7 ₂ ). In this case, even if the metal plate is displaced in the conveying direction while the regulating member is inserted into the hole, the dislocation is easily accommodated in the rail portion. Therefore, it becomes possible to further suppress the occurrence of defective products.

Example 9. In the method of any one of Examples 5 to 8, the holes include a through hole (R1) provided in the tip portion (ESa), a notch (R11) provided in the tip (ESb) of the metal plate (ES), Alternatively, it may be a notch (R10) provided on the side edge of the tip portion (ESa).

Example 10. In any of the methods of Examples 5 to 9, the holes (R1) may be formed in areas of the metal plate (ES) that will not be used as products. In this case, the holes used for positioning the metal plate do not affect the product.

Example 110. In any one of the methods of Examples 5 to 9, a part of the hole (R1) may be formed so as to overlap a region (R7 ₁ ) of the metal plate (ES) that will become the product (W). In this case, since the product includes a punched member in which a notch that is a part of the hole is formed, the punched member punched from a different lot of metal plate is mixed in the product, using the notch as a mark. It is possible to easily identify the presence of

Example 12. The method of Example 1 or Example 2 further includes bringing the tip of the metal plate (ES) into contact with the stopper member (G1) before engaging the positioning portion (R12) and the regulating member (G3); Engagement of the positioning portion (R12) with the regulating member (G3) is performed by inserting the regulating member (G3) into the notch (R12) provided in the side edge of the tip portion (ESa) to remove the metal plate. The notch (R12) extends across the width of the metal plate (ES) toward the rear end side of the metal plate (ES). A sloped edge that slopes outward in the direction may be included, and the regulating member (G3) may include a sloped portion corresponding to the sloped edge. In this case, when the metal plate is conveyed toward the regulating member, the tip of the metal plate comes into contact with the inclined portion of the regulating member. Therefore, when the metal plate is further conveyed, the metal plate advances downstream while pushing the regulating member outward in the width direction of the metal plate. After that, when the notch of the metal plate reaches the regulating member, the regulating member enters the notch and presses the side edge of the tip portion. As described above, in the process of conveying the metal plate, the regulating member naturally enters the notch, thereby suppressing the displacement of the metal plate. Therefore, it is possible to further improve the yield. On the other hand, if the metal plate is further conveyed while the regulating member is in the cutout, the metal plate advances downstream while the slanted portion of the regulating member and the slanted edge of the cutout are in contact with each other, and the regulating member is moved. pushed out of the notch. That is, when the metal plate advances, the regulating member is naturally pushed out of the notch without using a driving source or the like. Therefore, it is possible to prevent the restricting member from hindering the movement of the metal plate due to the spontaneous movement of the restricting member.

Example 13. In the method of Example 12, after engaging the positioning portion (R12) and the regulating member (G3) and before conveying the metal plate (ES) toward the downstream side, the regulating member ( G3) may further include releasing pressure on the side edge of the tip portion (ESa). In this case, the side edge of the metal plate is not pressed by the regulating member while the metal plate is moving. Therefore, it becomes difficult for a frictional force to act between the metal plate and the regulating member, so it is possible to suppress the occurrence of burrs or the like on the side edges of the metal plate.

Example 14. The method of Example 3 further includes bringing the tip of the metal plate (ES) into contact with the stopper member (G1) before engaging the positioning portion (S) and the regulating member (G4); Engaging S) with the regulating member (G4) may include pressing the surface (S) of the metal plate (ES) with the regulating member (G4). In this case, it is possible to suppress the displacement of the metal plate by a very simple method of pressing the regulating member against the surface of the metal plate.

Example 15. A metal product manufacturing apparatus (100) according to another example of the present disclosure includes a transport mechanism (120) configured to transport a strip-shaped metal plate (ES) toward the downstream side, and a metal plate (ES) a regulating member (G2) configured to engage with the positioning portion (R1) at the distal end portion (ESa) of the control portion (Ctr); The control unit (Ctr) performs processing for controlling the regulating member (G2) so that the regulating member (G2) and the positioning unit (R1) are engaged with each other, and the engagement of the regulating member (G2) and the positioning unit (R1). A process of controlling the transport mechanism (120) so that the transport mechanism (120) grips the metal plate (ES) in a state where the transport mechanism (120) is in contact with the transport mechanism (120); and a process of controlling the regulating member (G2) and the conveying mechanism (120) so as to convey the sheet toward the side. In this case, the same effects as in Example 1 are obtained.

Example 16. The apparatus (100) of Example 15 further comprises a processing mechanism (130) configured to form the positioning portion (R1), and the control portion (Ctr) controls the regulating member (G2) prior to the process of controlling , a process of controlling the processing mechanism (130) to form the positioning portion (R1) in the tip portion (ESa). In this case, the same effects as in Example 2 are obtained.

Example 17. In the method of Example 15 or Example 16, conveying the metal plate (ES) toward the downstream side releases the engagement of the regulating member (G2) with the positioning portion (R1) so that the conveying mechanism (120) It may include conveying the gripped metal sheet (ES) downstream. In this case, the same effect as Example 3 is obtained.

Example 18. In the apparatus (100) of Example 17, controlling the regulating member (G1) is such that the tip (ESb) of the metal plate (ES) being conveyed by the conveying mechanism (120) abuts against the regulating member (G1). may include adjusting the position of the regulating member (G1). In this case, the same effects as in Example 4 are obtained.

Example 19. In the device (100) of Example 17 or Example 18, controlling the regulating member (G2) is such that the regulating member (G2) is inserted into the hole (R1) provided in the distal end portion (ESa). may include adjusting the position of the regulating member (G2). In this case, the same effect as Example 5 is obtained.

Example 20. The apparatus (100) of Example 17 further includes a stopper member (G1) configured to abut against the tip (ESb) of the metal plate (ES), and the control section (Ctr) controls the regulating member (G2). Prior to the process for carrying out the processing, the control for adjusting the position of the stopper member (G1) is further performed so that the tip (ESb) of the metal plate (ES) being conveyed by the conveying mechanism (120) abuts against the stopper member (G1). Including, by controlling the regulating member (G2), a hole ( R1) may include adjusting the position of the regulating member (G2) so that the regulating member (G2) is inserted. In this case, the same effects as in Example 6 are obtained.

Example 21. In the device (100) of Example 19 or Example 20, the outside dimension of the regulating member (G2) may be smaller than the inside dimension of the hole (R1). In this case, the same effects as in Example 7 are obtained.

Example 22. In the apparatus (100) of Example 21, the clearance (L1) between the regulating member (G2) and the hole (R1) in the conveying direction of the metal plate (ES) is the product It may be smaller than 1/2 of the interval (L2) between the regions (R7 ₁ , R7 ₂ ) of (W). In this case, the same effects as in Example 8 are obtained.

Example 23. In the device (100) of any one of Examples 19 to 22, the holes include a through hole (R1) provided in the tip portion (ESa), a notch ( R11), or a notch (R10) provided in the side edge of the tip portion (ESa).

Example 24. In the device (100) of any one of Examples 19 to 23, the hole (R1) may be formed in a region of the metal plate (ES) that does not become the product (W). In this case, the same effects as in Example 10 are obtained.

Example 25. In the device (100) of any one of Examples 19 to 23, a part of the hole (R1) is formed so as to overlap the regions (R7 ₁ , R7 ₂ ) of the metal plate (ES) that will be the product (W). may have been In this case, the same effects as in Example 11 are obtained.

Example 26. The apparatus (100) of Example 17 further includes a stopper member (G1) configured to abut against the tip (ESb) of the metal plate (ES), and the control section (Ctr) controls the regulating member (G4). Prior to the process for carrying out the processing, the control for adjusting the position of the stopper member (G1) is further performed so that the tip (ESb) of the metal plate (ES) being conveyed by the conveying mechanism (120) abuts against the stopper member (G1). Including, controlling the regulating member (G4) may include pressing the surface (S) of the metal plate (ES) with the regulating member (G4). In this case, the same effects as in Example 14 are obtained.

Example 27. A metal product manufacturing apparatus (100) according to another example of the present disclosure includes a transport mechanism (120) configured to transport a strip-shaped metal plate (ES) toward the downstream side, and a metal plate (ES) and a stopper member (G1 ) and a control unit (Ctr). The control unit (Ctr) adjusts the position of the stopper member (G1) so that the tip (ESb) of the metal plate (ES) conveyed by the conveying mechanism (120) contacts the stopper member (G1). a process of controlling the transport mechanism (120) so that the transport mechanism (120) grips the metal plate (ES) in a state in which the regulating member (G3) and the positioning part (R1) are engaged; and a process of controlling the conveying mechanism (120) so as to convey the metal plate (ES) held by the mechanism (120) toward the downstream side. The regulating member (G3) is biased so as to press the front end portion (ESa) in the width direction of the metal plate (ES). R12). The notch (R12) includes an inclined edge that is inclined outward in the width direction of the metal plate (ES) toward the rear end side of the metal plate (ES). The regulating member (G3) includes a sloped portion corresponding to the sloped edge. In this case, the same effects as in Example 12 are obtained.

Example 28. In the device (100) of Example 27, the control unit (Ctr) controls the regulating member (G3) before the process of controlling the transport mechanism (120) so that the transport mechanism (120) grips the metal plate (ES). is inserted into the notch (R12), and after the process of pressing the restricting member (G3) against the distal end portion (ESa), and Before the process of controlling the transport mechanism (120) so as to transport the metal plate (ES) gripped by the transport mechanism (120) toward the downstream side, the tip portion (ESa) is moved by the regulating member (G3). It may be configured to further execute a process of releasing pressure on the side edges. In this case, the same effects as in Example 13 are obtained.

DESCRIPTION OF SYMBOLS 1... Stator laminated core, 100... Manufacturing apparatus, 130... Tip processing apparatus (processing mechanism), 140... Punching apparatus, Ctr... Controller (control part), ES... Electromagnetic steel plate (metal plate), ESa... Tip part, ESb... Leading edge (positioning portion), G1... Elevating pin (stopper member; regulating member), G2... Elevating pin (regulating member), G3... Pressing pin (regulating member), G4... Pressing pin (regulating member), R1... Through hole (positioning part; hole), R10, R11... Notch (positioning part; hole), R12... Notch (positioning part), W... Punching member.

Claims (16)

inserting a regulating member into a hole provided at the tip of a strip-shaped metal plate;
grasping the metal plate by a conveying mechanism in a state in which the regulation member is inserted into the hole ;
A method of manufacturing a metal product, including conveying the metal plate gripped by the conveying mechanism toward the downstream side. 2. The method of claim 1, further comprising forming the hole in the tip portion prior to inserting the restricting member into the hole. The conveying of the metal plate toward the downstream side includes removing the regulating member from the inside of the hole and conveying the metal plate gripped by the conveying mechanism toward the downstream side. 3. The method according to Item 1 or 2. 4. The method according to claim 3, further comprising abutting a tip of said metal plate against a stopper member before inserting said restricting member into said hole . 5. The method according to claim 4 , wherein the restricting member has an outer diameter smaller than the inner dimension of the hole. 6. The method according to claim 5 , wherein a clearance between the regulating member and the hole in the conveying direction of the metal plate is smaller than 1/2 of an interval between regions of the metal plate that are to be products in the conveying direction. the method of. 7. The hole portion is a through hole provided in the tip portion, a notch provided in the tip of the metal plate, or a notch provided in a side edge of the tip portion. The method described in section. 8. The method according to any one of claims 1 to 7 , wherein said hole is formed in a region of said metal plate that does not become a product. 8. The method according to any one of claims 1 to 7 , wherein a part of said hole is formed so as to overlap a region of said metal plate that will be a product. abutting the end of the strip-shaped metal plate against the stopper member;
After bringing the front end of the metal plate into contact with the stopper member, a regulating member is inserted into the notch provided in the side edge of the front end portion of the metal plate , thereby moving the metal plate in the width direction. pressing the tip portion with the regulating member ;
grasping the metal plate by a conveying mechanism in a state where the tip portion is pressed by the regulating member;
A method of manufacturing a metal product, including conveying the metal plate gripped by the conveying mechanism toward the downstream side . The notch includes an inclined edge that is inclined outward in the width direction of the metal plate toward the rear end side of the metal plate,
11. The method of claim 10, wherein said restricting member includes a beveled portion corresponding to said beveled edge. After pressing the leading end portion by the regulating member and before conveying the metal plate toward the downstream side, the pressing of the side edge of the leading end portion by the regulating member is released. 12. The method of claim 10 or 11 , further comprising. abutting the end of the strip-shaped metal plate against the stopper member;
pressing the surface of the metal plate at the tip portion of the metal plate with a regulating member after the tip of the metal plate is brought into contact with the stopper member ;
grasping the metal plate by a conveying mechanism in a state where the surface of the metal plate is pressed by the regulating member;
A method of manufacturing a metal product , including conveying the metal plate gripped by the conveying mechanism toward the downstream side . a conveying mechanism configured to convey the strip-shaped metal plate toward the downstream side;
a regulating member that is configured to be insertable into a hole provided in the tip portion of the metal plate;
and a control unit,
The control unit
a process of controlling the regulating member so that the regulating member is inserted into the hole ;
a process of controlling the transport mechanism so that the transport mechanism grips the metal plate in a state in which the regulation member is inserted into the hole ;
and a process of controlling the regulating member and the conveying mechanism so as to convey the metal plate gripped by the conveying mechanism toward the downstream side. a conveying mechanism configured to convey the strip-shaped metal plate toward the downstream side;
a regulating member configured to engage with the positioning portion at the tip portion of the metal plate;
a stopper member configured to abut against the tip of the metal plate;
and a control unit,
The control unit
a process of controlling the stopper member so that the stopper member abuts against the tip of the metal plate;
With the front end of the metal plate in contact with the stopper member, the regulating member is inserted into the notch provided in the side edge of the front end portion of the metal plate, and the front end in the width direction of the metal plate is a process of controlling the regulating member so that the portion is pressed by the regulating member;
A process of controlling the transport mechanism so that the transport mechanism grips the metal plate in a state where the tip portion is pressed by the regulating member;
A metal product configured to perform a process of controlling the stopper member, the regulating member, and the transport mechanism so that the metal plate gripped by the transport mechanism is transported toward the downstream side. manufacturing equipment. a conveying mechanism configured to convey the strip-shaped metal plate toward the downstream side;
a regulating member configured to engage with the positioning portion at the tip portion of the metal plate;
a stopper member configured to abut against the tip of the metal plate;
and a control unit,
The control unit
a process of controlling the stopper member so that the stopper member abuts against the tip of the metal plate;
a process of controlling the regulating member so that the regulating member presses the surface of the metal plate at the tip portion of the metal plate while the tip of the metal plate is in contact with the stopper member;
A process of controlling the transport mechanism so that the transport mechanism grips the metal plate while the surface of the metal plate is pressed by the regulating member;
A metal product configured to perform a process of controlling the stopper member, the regulating member, and the transport mechanism so that the metal plate gripped by the transport mechanism is transported toward the downstream side. manufacturing equipment.

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