WO2023054027A1 - Dispositif de moulage à alimentation progressive et procédé de fabrication de noyau de fer stratifié - Google Patents

Dispositif de moulage à alimentation progressive et procédé de fabrication de noyau de fer stratifié Download PDF

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Publication number
WO2023054027A1
WO2023054027A1 PCT/JP2022/034776 JP2022034776W WO2023054027A1 WO 2023054027 A1 WO2023054027 A1 WO 2023054027A1 JP 2022034776 W JP2022034776 W JP 2022034776W WO 2023054027 A1 WO2023054027 A1 WO 2023054027A1
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WO
WIPO (PCT)
Prior art keywords
metal plate
electromagnetic steel
steel sheet
die
lifter
Prior art date
Application number
PCT/JP2022/034776
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English (en)
Japanese (ja)
Inventor
尚 松永
Original Assignee
株式会社三井ハイテック
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社三井ハイテック filed Critical 株式会社三井ハイテック
Priority to CN202280066306.XA priority Critical patent/CN118159372A/zh
Publication of WO2023054027A1 publication Critical patent/WO2023054027A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B13/00—Methods of pressing not special to the use of presses of any one of the preceding main groups
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Definitions

  • the disclosed embodiments relate to a progressive mold device and a method for manufacturing a laminated core.
  • Laminated iron cores that make up the stator and rotor of a motor are produced by sequentially feeding a belt-shaped metal plate to a mold device and sequentially punching the metal plate into a desired shape at processing stations positioned side by side along the feeding direction of the metal plate. It is manufactured by forming core pieces and laminating the obtained core pieces.
  • An object of one aspect of the embodiments is to provide a progressive die device and a method for manufacturing a laminated core that can suppress the metal plates from fluttering in the die device.
  • a progressive die device includes an upper die, a lower die, a lifter, and a pressing member.
  • the upper die and the lower die press a strip-shaped metal plate that is progressively fed in a predetermined direction.
  • a lifter is provided on the lower mold and lifts the metal plate when the metal plate is fed forward.
  • the pressing member is provided on the upper mold and presses the metal plate from above when the lifter lifts the metal plate.
  • the method for manufacturing a laminated core includes a pressing step, a lifting step, and a pressing step.
  • a pressing step a strip-shaped metal plate that is fed progressively in a predetermined direction is pressed by an upper die and a lower die.
  • the lifting step the metal plate is lifted by a lifter provided on the lower die when the metal plate is forwarded.
  • a pressing member provided on the upper mold presses the metal plate from above.
  • FIG. 1 is a schematic diagram showing an example of a laminated core manufacturing apparatus according to an embodiment.
  • FIG. 2 is a perspective view showing an example of the laminated core according to the embodiment.
  • FIG. 3A is a plan view showing an example of an electromagnetic steel sheet to be punched by the press working apparatus according to the embodiment;
  • FIG. 3B is a plan view showing an example of the lower mold according to the embodiment;
  • FIG. 4A is a cross-sectional view showing an example of a lifter according to the embodiment;
  • FIG. 4B is a cross-sectional view showing an example of a guide according to the embodiment;
  • FIG. 5A is a plan view showing an example of an upper mold according to the embodiment;
  • FIG. 5B is a cross-sectional view showing an example of a pressing member according to the embodiment
  • FIG. 6 is a flow chart showing an example of the procedure of each manufacturing process executed by the press working apparatus according to the embodiment.
  • FIG. 7A is a diagram for explaining an example of a manufacturing process of the laminated core according to the embodiment
  • 7B is a diagram for explaining an example of a manufacturing process of the laminated core according to the embodiment
  • FIG. 8A is a diagram for explaining an example of a manufacturing process of the laminated core according to the embodiment
  • FIG. 8B is a diagram for explaining an example of a manufacturing process of the laminated core according to the embodiment
  • FIG. 9 is a diagram for explaining an example of a manufacturing process of a laminated core according to a modification.
  • drawings are schematic, and the relationship between the dimensions of each element, the ratio of each element, etc. may differ from reality. Furthermore, even between the drawings, there are cases where portions having different dimensional relationships and ratios are included.
  • Laminated iron cores that make up the stator and rotor of a motor are produced by sequentially feeding a belt-shaped metal plate to a mold device and sequentially punching the metal plate into a desired shape at processing stations positioned side by side along the feeding direction of the metal plate. It is manufactured by forming core pieces and laminating the obtained core pieces.
  • the metal plate is lifted from the lower die by a lifter provided in the lower die, and then forwardly fed.
  • this flapping occurs remarkably when lifting the metal plate from the lower mold with a lifter. Then, the metal plate may get caught in the mold device, causing problems such as insufficient forward movement and deformation of the metal plate. In particular, metal plates used as raw materials for laminated cores are becoming thinner in response to the need for higher motor efficiency, and flutter is likely to occur.
  • FIG. 1 is a schematic diagram showing an example of a laminated core manufacturing apparatus 100 according to an embodiment.
  • a manufacturing apparatus 100 according to an embodiment is configured to manufacture a laminate of core pieces from a strip-shaped electromagnetic steel sheet MS.
  • the X-axis direction, the Y-axis direction and the Z-axis direction which are orthogonal to each other are defined, the positive direction of the Z-axis is the vertically upward direction, and the positive direction of the X-axis is the electromagnetic wave.
  • An orthogonal coordinate system may be shown in which the forward feeding direction of the steel sheet MS and the Y-axis are the width direction of the electromagnetic steel sheet MS.
  • the manufacturing apparatus 100 includes an uncoiler 110, a delivery device 120, a press processing device 130, and a controller Ctr (control section).
  • the press working device 130 is an example of a progressive die device.
  • the uncoiler 110 is configured to hold the coil material 111 rotatably.
  • the coil material 111 is obtained by winding an electromagnetic steel sheet MS in a coil shape (spiral shape).
  • the electromagnetic steel sheet MS is an example of a metal plate.
  • the delivery device 120 includes a pair of rollers 121 and 122 that sandwich the electromagnetic steel sheet MS 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 sequentially feeds the electromagnetic steel sheet MS toward the press working device 130 (hereinafter also referred to as “forward feeding”).
  • forward feeding is configured to That is, the pair of rollers 121 and 122 has a function as a conveying means for conveying the electromagnetic steel sheets MS.
  • the press working device 130 is configured to operate based on an instruction signal from the controller Ctr.
  • the press working device 130 operates, for example, a plurality of punches (not shown) to sequentially press the electromagnetic steel sheets MS delivered by the delivery device 120 (for example, punching, half-punching, etc.).
  • the press working device 130 is configured to form a plurality of punched members W (see FIG. 2).
  • the press working device 130 may be configured to sequentially stack a plurality of punched members W obtained by punching to form a laminate.
  • the pressing device 130 includes a lower mold 140, an upper mold 150, and a press machine 160.
  • the lower die 140 is positioned below the electromagnetic steel sheets MS that are fed forward, and supports the electromagnetic steel sheets MS from below.
  • the upper mold 150 is positioned above the progressively fed electromagnetic steel sheets MS, and presses the electromagnetic steel sheets MS by moving up and down. Details of the lower mold 140 and the upper mold 150 will be described later.
  • the press machine 160 is positioned above the upper die 150 .
  • a piston of the press machine 160 is connected to a punch holder (not shown) that holds a plurality of punches provided on the upper die 150, and operates based on instruction signals from the controller Ctr.
  • the press machine 160 operates, its piston expands and contracts, and the upper die 150 moves up and down as a whole.
  • the controller Ctr generates an instruction signal for operating the feeding device 120 and the press working device 130 based on, for example, a program recorded in a recording medium (not shown) or an operation input from an operator. It is configured.
  • the controller Ctr is configured to send this instruction signal to the sending device 120 and the press working device 130 respectively.
  • FIG. 2 is a perspective view showing an example of the laminated core 1 according to the embodiment.
  • Laminated core 1 is, for example, a stator laminated core and is part of a stator.
  • stator is obtained by attaching windings to the laminated core 1 .
  • a motor is constructed by combining this stator with a rotor.
  • the laminated core 1 has a cylindrical shape. That is, the central portion of the laminated 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 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 MS (see FIG. 1) into a predetermined shape.
  • the laminated core 1 according to the embodiment may be configured by so-called rolling.
  • This "rolling” means stacking a plurality of punched members W while shifting the angles of the punched members W relatively.
  • the rolling is mainly performed for the purpose of canceling the plate thickness deviation of the laminated core 1 .
  • the angle of transduction may be set to any size.
  • a laminated core 1 includes a yoke portion 2, a plurality of tooth 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 radial width, inner diameter, outer diameter and thickness of the yoke portion 2 can each be set to various sizes according to 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.
  • 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 that are adjacent in the height direction are fastened together by the caulked portion 4 .
  • the crimped portion 4 is a crimp (not shown) formed on the punched member W forming the layer other than the bottom layer of the laminated core 1 and formed on the punched member W forming the bottom layer of the laminated core 1. through holes (not shown).
  • 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 core 1 when manufacturing the laminated core 1 continuously.
  • the plurality of punched members W may be fastened together by various known methods instead of the crimped portion 4 .
  • a plurality of punched members W may be joined to each other using an adhesive or resin material, or may be joined to each other by welding.
  • the laminated core 1 is formed by providing temporary crimps on the punched members W, fastening a plurality of punched members W through the temporary crimps to obtain a laminate, and then removing the temporary crimps from the laminate.
  • 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 (laminated core 1 or stator).
  • FIG. 3A is a plan view showing an example of the electromagnetic steel sheet MS to be punched by the press working device 130 according to the embodiment.
  • FIGS. 3A, 3B and 5A below for ease of understanding, the electrical steel sheet MS (see FIG. 3A), the lower die 140 (see FIG. 3B) and the upper die corresponding to the last part of the punching process are shown. 150 (see FIG. 5A).
  • the parts shown in black in FIG. 3A are the parts that are punched before reaching the stations Sa and Sb. That is, as shown in FIG. 3A, the electromagnetic steel sheet MS according to the embodiment is punched at each part other than the through hole 1a (see FIG. 2) when it reaches the station Sa where punching is performed.
  • pilot holes H are punched in both edges at an upstream station (not shown). Pilot holes H are formed at each station provided in press working device 130 to position electromagnetic steel sheet MS by pilot pin 152 (see FIG. 5A) when electromagnetic steel sheet MS is punched by a punch.
  • the press machine 130 punches out a portion Sa1 corresponding to the through hole 1a at the station Sa.
  • portions Sa1 and Sb1 hatched with dots are portions to be punched at stations Sa and Sb, respectively.
  • the press working device 130 punches a portion Sb1 corresponding to the entire punched member W from the electromagnetic steel sheet MS that has been forwarded from the station Sa to the station Sb along the predetermined direction D. Thereby, one punched member W is formed in the press working device 130 .
  • FIG. 3B is a plan view showing an example of the lower mold 140 according to the embodiment.
  • the lower mold 140 according to the embodiment has a die plate 141, pilot holes 142, lifters 143, and guides 144.
  • a die hole Sa2 is formed at station Sa
  • a die hole Sb2 is formed at station Sb.
  • the die plate 141 has a function of molding the punched member W together with a plurality of punches provided on the upper die 150 .
  • Such die plate 141 is supported, for example, by a base (not shown) and a die holder 145 (see FIG. 4A).
  • pilot hole 142 is provided so as to extend along the vertical direction, and is formed in the die plate 141, for example. Pilot hole 142 is a reference hole for positioning electromagnetic steel sheet MS by pilot pin 152 (see FIG. 5A) when electromagnetic steel sheet MS is punched by a punch.
  • the lifter 143 lifts the electromagnetic steel sheet MS from the upper surface 141a (see FIG. 4A) of the die plate 141 when the electromagnetic steel sheet MS is forwarded.
  • a plurality of lifters 143 are provided at positions through which the electromagnetic steel sheets MS pass in the lower die 140 .
  • lifter 143 is provided at a position through which at least the central portion of electromagnetic steel sheet MS in the width direction passes.
  • FIG. 4A is a cross-sectional view showing an example of the lifter 143 according to the embodiment. As shown in FIG. 4A, the lifter 143 has a pin portion 143a and an elastic member 143b.
  • the lifter 143 causes the elastic members 143b to contract downward, so that the tips of the pin portions 143a move to the die plate. It can have substantially the same height as the upper surface 141a of 141 in the vertical direction.
  • the electromagnetic steel sheet MS can be pressed against the upper surface 141a of the die plate 141 during punching.
  • the elastic member 143b expands upward, so that the magnetic steel sheet MS is moved in a state in which the tip of the pin portion 143a is separated from the upper surface 141a of the die plate 141 in the vertical direction. can support.
  • a tapered portion 143a1 is provided at the tip of the pin portion 143a on the side opposite to the direction D of forward feeding.
  • the guides 144 are provided close to both edges of the electromagnetic steel sheets MS to be fed forward, and restrict the electromagnetic steel sheets MS from shifting in the Y-axis direction when they are fed forward. That is, the guide 144 guides the electromagnetic steel sheet MS along the direction D of forward feeding of the electromagnetic steel sheet MS while supporting both edge portions of the electromagnetic steel sheet MS.
  • FIG. 4B is a cross-sectional view showing an example of the guide 144 according to the embodiment.
  • the guide 144 has a regulating portion 144a, an elevating portion 144b, and an elastic member 144c (see FIG. 7A).
  • the restricting portion 144a has a first restricting portion 144a1 and a second restricting portion 144a2.
  • the first restricting portion 144a1 is positioned close to the side of the edge of the electromagnetic steel sheet MS, and restricts the electromagnetic steel sheet MS from shifting in the Y-axis direction.
  • the second restricting portion 144a2 is positioned close to above the edge of the electromagnetic steel sheet MS, and restricts the edge of the electromagnetic steel sheet MS from rising excessively in the vertical direction.
  • the elastic member 144c is contracted downward, so that the tip of the elevating section 144b moves toward the die plate 141.
  • the electromagnetic steel sheet MS can be pressed against the upper surface 141a of the die plate 141 during punching.
  • the elastic member 144c extends upward, so that the magnetic steel sheet MS is moved in a state in which the tip of the lifting section 144b is separated from the upper surface 141a of the die plate 141 in the vertical direction. can support.
  • the lifting portion 144b of the guide 144 moves up and down in conjunction with the pin portion 143a of the lifter 143. As shown in FIG.
  • the die holes Sa2 and Sb2 are provided so as to extend along the vertical direction, and are formed in the die plate 141 and the die holder 145, for example.
  • the die holes Sa2 and Sb2 are provided at positions corresponding to the punches Sa3 and Sb3 (see FIG. 5A) provided in the upper die 150, respectively.
  • core pieces for example, punched members W, etc. punched from the electromagnetic steel sheet MS by the punches Sa3 and Sb3 pass.
  • FIG. 5A is a plan view showing an example of the upper mold 150 according to the embodiment, and is a view of the upper mold 150 viewed from below. Note that FIG. 5A also shows the corresponding guides 144 of the lower mold 140 .
  • the upper die 150 has a stripper 151, a pilot pin 152, and a pressing member 153. Further, the upper die 150 is provided with a punch Sa3 at the station Sa and a punch Sb3 at the station Sb.
  • the stripper 151 has a function of sandwiching the electromagnetic steel sheet MS with a die plate 141 (FIG. 3B) when punching the electromagnetic steel sheet MS with a plurality of punches provided in the upper die 150, and a function of holding the electromagnetic steel sheet MS between the punches after punching. and removing the steel plate MS from the punch.
  • the stripper 151 is supported, for example, by a punch holder (not shown) positioned above the stripper 151 so as to be vertically movable.
  • the pilot pin 152 positions the electromagnetic steel sheet MS at a desired position by inserting the pilot pin 152 into the pilot hole H formed in the electromagnetic steel sheet MS when punching the electromagnetic steel sheet MS. Pilot pin 152 is supported by, for example, a punch holder located above stripper 151 .
  • the pressing member 153 presses the electromagnetic steel sheet MS from above when the electromagnetic steel sheet MS is lifted by the lifter 143 .
  • a plurality of pressing members 153 are pin-shaped, for example, and are provided at positions in upper die 150 through which electromagnetic steel sheets MS pass.
  • the arrangement of the pressing members 153 is not particularly limited, in the present disclosure, for example, they are provided at positions facing the plurality of lifters 143 provided on the lower die 140 . Note that the pressing member 153 is not limited to a pin shape.
  • FIG. 5B is a cross-sectional view showing an example of the pressing member 153 according to the embodiment. As shown in FIG. 5B, the pressing member 153 has a pin portion 153a and an elastic member 153b.
  • the elastic member 153b is contracted upward, so that the tip portion 153a1 of the pin portion 153a moves toward the lower surface 151a of the stripper 151. can be approximately the same height in the vertical direction.
  • the electromagnetic steel sheet MS can be pressed against the lower surface 151a of the stripper 151 during punching.
  • the elastic members 153b extend downward, so that the pin portions 153a are separated from the lower surface 151a of the stripper 151.
  • the MS can be pushed downwards.
  • the configuration of the pressing member 153 is not limited to the example in FIG. 5B.
  • the punches Sa3 and Sb3 have the function of punching the electromagnetic steel sheets MS positioned at the stations Sa and Sb at predetermined positions. Punches Sa3 and Sb3 have dimensions slightly smaller than die holes Sa2 and Sb2, respectively. The punches Sa3 and Sb3 are provided at positions through which the die holes Sa2 and Sb2 can be inserted, respectively. The punches Sa3 and Sb3 are supported by punch holders located above the stripper 151, for example.
  • FIG. 6 is a flow chart showing an example of the procedure of each manufacturing process executed by the press working device 130 according to the embodiment.
  • 7A to 8B are diagrams for explaining an example of the manufacturing process of the laminated core 1 according to the embodiment.
  • the controller Ctr first controls the delivery device 120 (see FIG. 1) and the like to press the electromagnetic steel sheet MS (see FIG. 1) into the press working device 130 (see FIG. 1). Inwardly along the direction D (see FIG. 1) (step S101).
  • controller Ctr controls the press working device 130 to lower the upper die 150 so that the electromagnetic steel sheet MS is sandwiched between the upper die 150 and the lower die 140, and press working is performed on the electromagnetic steel sheet MS (step S102). ).
  • the die plate 141 of the lower die 140 and the stripper 151 of the upper die 150 are used to press the electromagnetic steel sheet MS. is sandwiched.
  • the lower surface of the electromagnetic steel sheet MS contacts the upper surface 141 a of the die plate 141 and the upper surface of the electromagnetic steel sheet MS contacts the lower surface 151 a of the stripper 151 .
  • the upper surface 141a of the die plate 141, the tip of the pin portion 143a of the lifter 143 and the tip of the lifting portion 144b of the guide 144 have substantially the same height in the vertical direction.
  • the bottom surface 151a of the stripper 151 and the tip portion 153a1 (see FIG. 5B) of the pin portion 153a of the pressing member 153 have substantially the same height in the vertical direction.
  • step S102 the controller Ctr controls the press working device 130 to raise the upper die 150 and operate the lifter 143 and the like, thereby lowering the electromagnetic steel sheet MS. It is lifted from the mold 140 (step S103).
  • the controller Ctr (see FIG. 1) operates the press machine 160 (see FIG. 1) to gradually move the upper die 150 upward.
  • the lifter 143 begins to lift the electromagnetic steel sheet MS by the elastic force of the elastic member 143 b , separating the electromagnetic steel sheet MS from the upper surface 141 a of the die plate 141 .
  • the elevating portion 144 b of the guide 144 begins to lift the electromagnetic steel sheet MS by the elastic force of the elastic member 144 c , separating the electromagnetic steel sheet MS from the upper surface 141 a of the die plate 141 .
  • the controller Ctr further operates the press machine 160 to move the upper die 150 further upward, as shown in FIG. 8A.
  • the lifter 143 and the elevating portion 144b of the guide 144 are moved by the elastic force of the elastic members 143b and 144c to a predetermined ascending position (until the regulating portion 144a comes into contact with the second regulating portion 144a2 of the regulating portion 144a). position).
  • the electromagnetic steel sheet MS and the lower surface 151a of the stripper 151 are separated.
  • Step S104 the controller Ctr lifts the upper die 150 to cause the pressing member 153 to protrude from the upper die 150, thereby pressing the electromagnetic steel sheet MS from above.
  • the electromagnetic steel sheet MS is pressed from above by a pressing member 153 provided on the upper die 150 until the electromagnetic steel sheet MS is lifted to a predetermined elevated position by the lifter 143 or the like.
  • the pressing member 153 presses the central portion of the electromagnetic steel sheet MS in the width direction. In this manner, by pressing the central portion in the width direction of the electromagnetic steel sheet MS, which is most likely to flutter, with the pressing member 153, the fluttering of the electromagnetic steel sheet MS in the press working apparatus 130 can be further suppressed.
  • the pressing member 153 is provided at a position facing the lifter 143 .
  • the pressing member 153 can directly press the portion of the electromagnetic steel sheet MS that is likely to be urged upward by the lifter 143 and is in contact with the lifter 143 .
  • the pressing member 153 is preferably provided at a position close to the lifter 143. As a result, the vicinity of the portion of the electromagnetic steel sheet MS that is likely to be urged upward by the lifter 143, which is in contact with the lifter 143, can be pressed by the pressing member 153, so that the electromagnetic steel sheet MS does not flutter in the press working device 130. can be further suppressed.
  • step S105 the controller Ctr controls the press working device 130 to separate the upper die 150 from the electromagnetic steel sheet MS.
  • the controller Ctr further operates the press machine 160 to further raise the upper die 150 even after the lifter 143 or the like lifts the electromagnetic steel sheet MS to a predetermined raised position. move.
  • the pressing member 153 is separated from the upper surface of the electromagnetic steel sheet MS. Furthermore, although not shown in FIG. 8B, the pilot pin 152 (see FIG. 5A) provided on the upper die 150 also rises and exits the pilot hole H (see FIG. 3A) of the electromagnetic steel sheet MS.
  • the electromagnetic steel sheets MS are not bound by the upper die 150, the electromagnetic steel sheets MS can be forward fed.
  • the controller Ctr operates the sending device 120 and the like to feed the magnetic steel sheets MS forward by a predetermined distance along the direction D (step S106).
  • step S107 determines whether or not the pressing process for the electromagnetic steel sheet MS has been completed. Then, when the press working process of electromagnetic steel sheet MS is completed (Yes in step S107), a series of manufacturing processes is completed. On the other hand, if the press working process of the electromagnetic steel sheet MS is not completed (No in step S107), the process returns to step S102.
  • the controller Ctr operates the press machine 160 to move the upper die 150 downward.
  • the pilot pin 152 is inserted through the pilot hole H of the electromagnetic steel sheet MS, and the electromagnetic steel sheet MS is positioned at a predetermined position.
  • the controller Ctr further operates the press machine 160 to move the upper die 150 downward.
  • stripper 151 and pressing member 153 of upper die 150 come into contact with magnetic steel sheet MS, and magnetic steel sheet MS is sandwiched between die plate 141 of lower die 140 and stripper 151 of upper die 150 .
  • the controller Ctr operates the press machine 160 to punch the electromagnetic steel sheet MS with a plurality of punches provided on the upper die 150 . Then, it returns to the state shown in FIG. 7A.
  • the tip 153 a 1 of the pressing member 153 may be positioned above the tip of the pilot pin 152 in the upper die 150 .
  • the electromagnetic steel sheet MS when the electromagnetic steel sheet MS is positioned by the pilot pin 152, it is possible to prevent the pressing member 153 from restricting the movement of the electromagnetic steel sheet MS in the horizontal direction. Therefore, according to the embodiment, positioning of the electromagnetic steel sheets MS by the pilot pins 152 can be performed smoothly.
  • FIG. 9 is a diagram for explaining an example of the manufacturing process of the laminated core 1 according to the modification.
  • the configuration of the guide 144 is different from that of the above-described embodiment.
  • the guide 144 according to the modified example has an elevation restricting portion 144d and an elastic member 144c.
  • the elevation restricting portion 144d has a substantially U-shape in a cross-sectional view.
  • the elevation restricting portion 144d supports the edge of the electromagnetic steel sheet MS inside the U-shape, and restricts the electromagnetic steel sheet MS from shifting in the Y-axis direction and the vertical direction.
  • the elevation restricting portion 144d is configured to be movable up and down by the elastic force of the elastic member 144c. Note that the guide 144 does not have the restriction portion 144a described in the above embodiment. Therefore, the elevation restricting portion 144d can be raised to a position where the elastic force of the elastic member 144c reaches.
  • the guide 144 can support the lower surface of the electromagnetic steel plate MS in surface contact by having the lift regulating portion 144d having a substantially U shape in cross section. Therefore, according to the modification, it is possible to further suppress the electromagnetic steel sheets MS from fluttering within the press working device 130 .
  • the manufacturing process of the laminated core 1 is the same as the above-described embodiment described with reference to FIGS. 6 to 8B, so description thereof will be omitted.
  • the present disclosure is not limited to the above-described embodiments, and various modifications are possible without departing from the gist thereof.
  • the press working device 130 for punching the electromagnetic steel sheet MS is shown, but the present disclosure is not limited to such an example.
  • the electromagnetic steel sheet MS may be half-blanked, or a metal plate different from the electromagnetic steel sheet MS may be punched or half-blanked.
  • the progressive die device (pressing device 130) according to the embodiment includes the upper die 150, the lower die 140, the lifter 143, and the pressing member 153.
  • the upper die 150 and the lower die 140 press a strip-shaped metal plate (electromagnetic steel sheet MS) that is progressively fed in a predetermined direction D.
  • the lifter 143 is provided in the lower die 140 and lifts the metal plate (electromagnetic steel sheet MS) when the metal plate (electromagnetic steel sheet MS) is fed forward.
  • the pressing member 153 is provided in the upper die 150 and presses the metal plate (electromagnetic steel sheet MS) from above when the lifter 143 lifts the metal plate (electromagnetic steel sheet MS). As a result, it is possible to suppress the electromagnetic steel sheet MS from fluttering within the press working device 130 .
  • the pressing member 153 presses the central portion of the metal plate (electromagnetic steel sheet MS) in the width direction. As a result, it is possible to further suppress the electromagnetic steel sheet MS from fluttering within the press working device 130 .
  • the pressing member 153 is provided at a position facing the lifter 143 . As a result, it is possible to further suppress the electromagnetic steel sheet MS from fluttering within the press working device 130 .
  • the progressive die device (pressing device 130) further includes a pilot pin 152 that is provided in the upper die 150 and positions the metal plate (electromagnetic steel sheet MS). Further, the tip portion 153 a 1 of the pressing member 153 is positioned above the tip portion of the pilot pin 152 . Accordingly, the positioning of the electromagnetic steel sheets MS by the pilot pins 152 can be performed smoothly.
  • the progressive die apparatus (press working apparatus 130) according to the embodiment supports both edges of the metal plate (electromagnetic steel sheet MS), and along the direction D in which the metal plate (electromagnetic steel sheet MS) is progressively fed, A guide 144 for guiding the metal plate (electromagnetic steel plate MS) is further provided.
  • the guide 144 has a substantially U-shape in a cross-sectional view. As a result, it is possible to further suppress the electromagnetic steel sheet MS from fluttering within the press working device 130 .
  • the method for manufacturing the laminated core 1 includes a pressing step (step S102), a lifting step (step S103), and a pressing step (step S104).
  • step S102 a strip-shaped metal plate (electromagnetic steel sheet MS) fed forward in a predetermined direction D is pressed by upper die 150 and lower die 140.
  • step S103 the metal plate (electromagnetic steel sheet MS) is lifted by the lifter 143 provided on the lower mold 140 when the metal plate (electromagnetic steel sheet MS) is fed forward.
  • step S104 when the lifter 143 lifts the metal plate (electromagnetic steel sheet MS), the pressing member 153 provided in the upper die 150 presses the metal plate (electromagnetic steel sheet MS) from above. As a result, it is possible to suppress the electromagnetic steel sheet MS from fluttering within the press working device 130 .
  • step S105 the step of separating the pressing member 153 from the metal plate (electromagnetic steel sheet MS) (step S105); further includes As a result, the forward feeding process of the electromagnetic steel sheets MS can be carried out smoothly.
  • Laminated core 100 Manufacturing device 130 Press working device (an example of a progressive die device) 140 lower die 143 lifter 150 upper die 152 pilot pin 153 pressing member 153a1 tip D direction MS electromagnetic steel sheet (an example of a metal plate)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

Un dispositif de moulage à alimentation progressive comprend : un moule supérieur et un moule inférieur ; un dispositif de levage ; et un élément de force de pressage. Le moule supérieur et le moule inférieur pressent une plaque métallique en forme de bande, laquelle est introduite progressivement dans une direction prescrite. Le dispositif de levage est disposé sur le moule inférieur et soulève la plaque métallique lorsque la plaque métallique est introduite progressivement. L'élément de force de pressage est disposé sur le moule supérieur et applique une force de pressage à la plaque métallique à partir du dessus, lorsque la plaque métallique est soulevée par le dispositif de levage.
PCT/JP2022/034776 2021-09-30 2022-09-16 Dispositif de moulage à alimentation progressive et procédé de fabrication de noyau de fer stratifié WO2023054027A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280066306.XA CN118159372A (zh) 2021-09-30 2022-09-16 跳步模具装置以及层叠铁芯的制造方法

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JP2021-161455 2021-09-30
JP2021161455A JP2023051027A (ja) 2021-09-30 2021-09-30 順送り金型装置および積層鉄心の製造方法

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WO2023054027A1 true WO2023054027A1 (fr) 2023-04-06

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JP (1) JP2023051027A (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756529U (fr) * 1980-09-20 1982-04-02
JP2005081414A (ja) * 2003-09-10 2005-03-31 Aisin Aw Co Ltd 順送りプレス加工装置
WO2017130324A1 (fr) * 2016-01-27 2017-08-03 株式会社三井ハイテック Procédé de traitement d'un élément stratifié

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756529U (fr) * 1980-09-20 1982-04-02
JP2005081414A (ja) * 2003-09-10 2005-03-31 Aisin Aw Co Ltd 順送りプレス加工装置
WO2017130324A1 (fr) * 2016-01-27 2017-08-03 株式会社三井ハイテック Procédé de traitement d'un élément stratifié

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JP2023051027A (ja) 2023-04-11
CN118159372A (zh) 2024-06-07

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