Method for manufacturing laminate and apparatus for manufacturing laminate

Abstract

The present disclosure is a method for manufacturing a laminate in which a locked core member and a non-locked core member are selectively punched and molded from a metal plate and laminated, the method including a step of forming the non-locked core member by using a first mold forming a non-locked core member side contour shape when molding the non-locked core member, and a step of forming the non-locked core member by using a second mold forming a non-locked core member side contour shape, when molding the non-locked core member by using a second mold forming a non-locked core member side contour shape. Punching the plurality of clamping sheet forming areas of the metal plate; when the clamping iron core component and the non-clamping iron core component are formed, a second mold used for forming the outline shape of the clamping iron core component side is used for punching the clamping piece forming area of the metal plate; punching the metal plate by using a third mold so as to separate the clamping iron core component and the non-clamping iron core component from the metal plate; and supporting the clamping piece of the clamping iron core member punched from the metal plate, thereby controlling the supply timing of the clamping iron core member and the non-clamping iron core member to the receiving member.

Description

Technical Field

[0001] The present disclosure relates to a method for producing a laminated body and an apparatus for producing a laminated body. Background Art

[0002] Conventionally, in order to obtain a motor core (rotor core or stator core) used in a motor mounted in an electric vehicle or the like, a laminated body is produced by laminating a plurality of core members.

[0003] Japanese Patent Application Publication No. 2019-118169 describes a plate lamination device for manufacturing laminated bodies that constitute a stator core. This device features a sensor that detects the passage of plates fed from a cylinder serving as a conveyor path, and a partitioning mechanism that supports the plates, located near the cylinder's exit. Based on the sensor's detection results, the partitioning mechanism projects onto the plate conveyor path at a desired timing, halting the conveyance of the plates. This allows the number of plates fed to the fixture and the timing of their delivery to be controlled. Summary of the Invention

[0004] Problems to be solved by the invention

[0005] As in the invention disclosed in Japanese Patent Application Publication No. 2019-118169, if the timing of the protrusion of the partition mechanism is determined solely based on the detection results of the sensor that senses the passage of the plate output from the cylinder, when the plate output speed from the cylinder is relatively fast, the time from sensing the passage of the plate to completing the action of the partition mechanism will become extremely short. Therefore, the actuator, sensor, and control device of the partition mechanism are required to have a fast response speed, and the difficulty of their control will also increase. In addition, for example, when the action speed of the partition mechanism decreases due to aging degradation of the actuator of the partition mechanism, the following undesirable situation may occur: before the action of the partition mechanism is completed, the plate whose transport should be stopped arrives, and the transport of the plate cannot be stopped. Moreover, in order to make the partition mechanism operate with high precision, it is necessary to frequently confirm the aging degradation of the actuator of the partition mechanism, and the maintenance frequency becomes high.

[0006] The present disclosure provides a method for manufacturing a laminated body and an apparatus for manufacturing a laminated body, which can accurately and efficiently stack core members without requiring any special equipment or the like.

[0007] Solutions for solving problems

[0008] The manufacturing method of the stacked body of the first scheme of the present disclosure is to selectively punch and form a plurality of core components including a locking core component and a non-locking core component by a metal plate conveyed along a first conveying direction, and stack the plurality of core components punched and formed, the locking core component having locking pieces at a plurality of locations on its outer peripheral surface, and the non-locking core component not having the locking pieces, the manufacturing method comprising the following steps: when forming the non-locking core component, using a first mold capable of forming a side contour shape of the non-locking core component formed on the outer peripheral surface of the non-locking core component, punching out a plurality of locking piece forming areas of the metal plate where the locking pieces are to be formed; when forming the locking core component and the non-locking core component During molding, a second mold capable of forming a side profile of a locking core component including the locking piece formed on the outer peripheral surface of the locking core component is used to punch out the locking piece forming area of ​​the metal plate, wherein the side profile of the locking core component includes a portion located outside the side profile of the non-locking core component when viewed from above when the locking core component and the non-locking core component are stacked; a third mold is used to punch out the metal plate to separate the locking core component and the non-locking core component from the metal plate; and the locking piece of the locking core component separated from the metal plate is supported, thereby controlling the supply timing of the locking core component and the non-locking core component to the receiving component.

[0009] In the above-described method for manufacturing a laminated body, two core members of different shapes are selectively punched and formed, and the locking piece that locks the core members is supported, thereby controlling the timing of the core member supply. This allows the timing of the core member supply to be adjusted without using a special device, and allows efficient lamination of the core members without stopping the device. Furthermore, simply by controlling whether the punching process using the first die is required, the two core members can be continuously manufactured, eliminating the need for complex control when selectively punching and forming the two core members.

[0010] Regarding the manufacturing method of the stacked body of the second embodiment of the present disclosure, in the manufacturing method of the stacked body of the first embodiment of the present disclosure, along the first conveying direction, a first punching area to a third punching area are sequentially provided from the upstream side of the first conveying direction, the process of punching the metal plate using the first mold is implemented in the first punching area, the process of punching the metal plate using the second mold is implemented in the second punching area, and the process of punching the metal plate using the third mold is implemented in the third punching area.

[0011] In the above-described method for manufacturing a laminated body, the contour of the locking piece forming area of ​​each core member is formed by arranging the mold for forming the contour of each core member at a position different from the mold for punching the outer diameter, thereby enabling the contour of the locking piece forming area to be punched with high precision.

[0012] Regarding the manufacturing method of the stacked body of the third embodiment of the present disclosure, in the manufacturing method of the stacked body of the first embodiment of the present disclosure, a first punching area and a fourth punching area are provided in sequence along the first conveying direction starting from the upstream side of the first conveying direction, and the process of punching the metal plate using the first mold is implemented in the first punching area, and the process of punching the metal plate using the second mold and the process of punching the metal plate using the third mold are implemented in the fourth punching area by a fourth mold composed of the second mold and the third mold.

[0013] In the method for producing a laminated body as described above, by using the fourth die, the punching step using the second die and the punching step using the third die can be performed at once, thereby reducing the man-hours required for punching and molding.

[0014] For the manufacturing method of the stacked body of the fourth scheme of the present disclosure, in the manufacturing method of the stacked body of any one of the first scheme to the third scheme of the present disclosure, the process of controlling the supply timing of the locking core component and the non-locking core component to the receiving component includes the following processes: supplying the locking core component and the non-locking core component separated from the metal plate to the extrusion; and supplying the core component to the receiving component from the end of the extrusion on the downstream side of the second conveying direction intersecting the first conveying direction, the extrusion includes: an upstream part of the extrusion, located on the upstream side of the second conveying direction of the extrusion, supporting from the side the multiple locking core components and the non-locking core components passing through the extrusion; and a downstream part of the extrusion, located on the downstream side of the second conveying direction of the extrusion, supporting from the side the locking plate of the locking core component passing through the extrusion.

[0015] In the above-described method for manufacturing a laminated body, the timing of supplying the core member to the receiving member can be easily adjusted by passing the core member through the extrusion piece. Therefore, the laminated body can be manufactured continuously without stopping the apparatus, thereby improving production efficiency.

[0016] The manufacturing device of the stacked body of the fifth scheme of the present disclosure includes: a conveying mechanism that conveys a metal plate that can be selectively punched and formed into multiple core components including a locking core component and a non-locking core component along a first conveying direction, wherein the locking core component has locking pieces at multiple locations on its outer peripheral surface, and the non-locking core component does not have the locking pieces; a first mold that can form the side contour shape of the non-locking core component formed on the outer peripheral surface of the non-locking core component in the multiple locking piece forming areas of the metal plate where the locking pieces are to be formed; a second mold that can form a locking core component side wheel including the locking pieces formed on the outer peripheral surface of the locking core component in the locking piece forming area of ​​the metal plate. The outer shape of the side of the locking core component is located on the outside of the outer shape of the side of the non-locking core component when viewed from above when the locking core component and the non-locking core component are stacked; a third mold capable of separating the locking core component and the non-locking core component from the metal plate; a punching machine capable of moving the first mold, the second mold and the third mold; a receiving member for receiving the locking core component and the non-locking core component separated from the metal plate; a supporting mechanism capable of supporting the locking piece of the locking core component separated from the metal plate; and a control device for controlling the implementation of the punching action performed by the first mold.

[0017] In the apparatus for manufacturing a laminated body described above, two core members of different shapes are selectively punched and formed, and a locking piece that locks the core members is supported, thereby controlling the timing of the core member supply. This allows the timing of the core member supply to be adjusted without using a special device, and allows efficient lamination of the core members without stopping the device. Furthermore, the two core members can be manufactured simply by controlling the first die, eliminating the need for complex control.

[0018] For the manufacturing device of the stacked body of the sixth scheme of the present disclosure, in the manufacturing device of the stacked body of the fifth scheme of the present disclosure, the supporting mechanism includes an extrusion, which can transport the locking core components and the non-locking core components separated from the metal plate to a second conveying direction intersecting the first conveying direction, and the extrusion includes: an upstream part of the extrusion, located on the upstream side of the second conveying direction of the extrusion, supporting from the side the multiple locking core components and the non-locking core components passing through the extrusion; and a downstream part of the extrusion, located on the downstream side of the second conveying direction of the extrusion, supporting from the side the locking plate of the locking core components passing through the extrusion.

[0019] In the above-described laminated body manufacturing apparatus, the supply timing of the core members to the receiving member can be easily adjusted by passing the core members through the extrusion piece. Therefore, the laminated body can be manufactured continuously without stopping the apparatus, thereby improving production efficiency.

[0020] Effects of the Invention

[0021] According to the method and apparatus for manufacturing a laminated body disclosed herein, core elements can be accurately and efficiently stacked without requiring any special equipment or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A This is a plan view showing an example of a locking core member punched and formed by the method for manufacturing a laminated body according to the first embodiment of the present disclosure.

[0023] Figure 1B yes Figure 1A Magnified view of part A.

[0024] Figure 2A This is a plan view showing an example of a non-locking core member punched and formed by the method for manufacturing a laminated body according to the first embodiment of the present disclosure.

[0025] Figure 2B yes Figure 2A Enlarged view of part B.

[0026] Figure 3 This is a schematic explanatory diagram showing an example of an apparatus for producing a laminated body according to the first embodiment of the present disclosure.

[0027] Figure 4 It is along Figure 3 The cross-sectional view is obtained by cutting along the D-D line.

[0028] Figure 5 It is along Figure 3 The cross-sectional view is obtained by cutting along the E-E line.

[0029] Figure 6 This is a flowchart showing an example of a method for producing a laminated body according to the first embodiment of the present disclosure.

[0030] Figure 7A yes Figure 6 The schematic plan views of the metal plate in each of the illustrated operating states are explanatory views showing the state of the metal plate when punching out the locked core member.

[0031] Figure 7B yes Figure 6 The schematic plan views of the metal plate in each of the illustrated operating states are explanatory views showing the state of the metal plate when punching out the locked core member.

[0032] Figure 7C yes Figure 6 The schematic plan views of the metal plate in each of the illustrated operating states are explanatory views showing the state of the metal plate when punching out the locked core member.

[0033] Figure 7D yes Figure 6 The schematic plan views of the metal plate in each of the illustrated operating states are explanatory views showing the state of the metal plate when punching out the locked core member.

[0034] Figure 8A yes Figure 6 The schematic plan views of the metal plate in each of the operating states shown are explanatory views showing the state of the metal plate when the non-locking core member is punched out.

[0035] Figure 8B yes Figure 6 The schematic plan views of the metal plate in each of the operating states shown are explanatory views showing the state of the metal plate when the non-locking core member is punched out.

[0036] Figure 8C yes Figure 6 The schematic plan views of the metal plate in each of the operating states shown are explanatory views showing the state of the metal plate when the non-locking core member is punched out.

[0037] Figure 8D yes Figure 6 The schematic plan views of the metal plate in each of the operating states shown are explanatory views showing the state of the metal plate when the non-locking core member is punched out.

[0038] Figure 9 It shows the following Figure 6 A flow chart showing an example of processes to be performed after each process shown.

[0039] Figure 10A Is to show the execution Figure 9 The method for manufacturing the laminate shown in FIG. Figure 3 The diagram is an explanatory diagram of the operation of the main parts of the manufacturing device shown.

[0040] Figure 10B Is to show the execution Figure 9 The method for manufacturing the laminate shown in FIG. Figure 3 The diagram is an explanatory diagram of the operation of the main parts of the manufacturing device shown.

[0041] Figure 10C Is to show the execution Figure 9 The method for manufacturing the laminate shown in FIG. Figure 3 The diagram is an explanatory diagram of the operation of the main parts of the manufacturing device shown. DETAILED DESCRIPTION

[0042] This application is based on Japanese Patent Application No. 2023-005468 filed in Japan on January 17, 2023, the contents of which are incorporated herein by reference as a part of the present application.

[0043] In addition, the present disclosure should be more fully understood through the following detailed description. Through the following detailed description, the further application scope of the present application will become apparent. However, the detailed description and specific examples are ideal embodiments of the present disclosure and are recorded only for illustrative purposes. This is because, within the spirit and scope of the present disclosure, various changes and modifications based on the detailed description will be apparent to those skilled in the art.

[0044] The applicant does not intend to dedicate any of the described embodiments to the public, and disclosed variations and alternatives that may not literally be included in the claims are also intended to be part of the invention under the doctrine of equivalents.

[0045] Hereinafter, various embodiments for implementing the present disclosure will be described with reference to the accompanying drawings. It should be noted that, below, the scope required for the description to achieve the purpose of this disclosure is schematically shown, and the scope required for the description of the corresponding parts of the present disclosure is mainly described, and the parts that are omitted will be based on the known technology. In addition, the same or similar reference numerals are marked on the components that are identical or equivalent to each other in the figures, and repeated descriptions are omitted. Moreover, in the case where a plurality of identical or equivalent components are included in a figure, in order to facilitate the understanding of the figure, sometimes only some of the components are marked with reference numerals. Moreover, in addition, as long as there is no special explanation in the specification, there may be multiple components of the present disclosure, and it is not limited to one.

[0046] Regarding the manufacturing apparatus 1 of the laminated body of the first embodiment described below (see Figure 3 ) and a method for manufacturing a laminated body, wherein two types of core members, a locking core member 10 having a locking tab 13A (see FIG. 1 ) and a non-locking core member 20 not having a locking tab 13A (see FIG. 2 ), are formed and stacked to produce a laminated body. Therefore, before describing the details of the manufacturing apparatus 1 and the manufacturing method, the structure of the core members described above will be briefly described below.

[0047] In this embodiment, multiple laminated core members can be stacked to form a block core. This block core can constitute a motor core on its own or, when stacked, a plurality of them can constitute a motor core, such as the stator core of an inner rotor type rotating electric machine. It should be noted that in this disclosure, a "laminated body" refers to a structure simply composed of multiple laminated core members, while a structure formed by welding or other means joining these laminated bodies is referred to as a "motor core" to distinguish between the two. Furthermore, the motor core described above can be either a split stator core or a non-split stator core, and can also constitute a non-split rotor core rather than a stator core.

[0048] FIG1 is a diagram showing an example of a locking core member supplied to a manufacturing apparatus for a laminated body according to a first embodiment of the present disclosure. Figure 1A It is a top view. Figure 1B yes Figure 1A The clamping core member 10 constituting a part of the plurality of core members of this embodiment is as shown in FIG. Figure 1A As shown, it can be composed of a single plate-shaped electromagnetic steel sheet (sometimes referred to as a "chip") having a predetermined wall thickness. Specifically, the locking core member 10 may include: a yoke 11, which is substantially annular and has a through-hole formed in its center for receiving the rotor core; teeth 12, which are generally T-shaped when viewed from above and are provided on the inner periphery of the yoke 11 so as to protrude toward the center of the yoke 11; and a plurality of locking core member side recesses (an example of a side profile of the locking core member) 13 formed on the outer peripheral surface of the yoke 11, some of which may function as locking tabs 13A.

[0049] The teeth 12 provided on the inner circumference of the locking core member 10 can be provided in multiple numbers, for example eight, at approximately equal intervals along the inner circumference. When assembled into the stator core, armature coils can be wound around the teeth 12. It should be noted that the specific shape and arrangement of the teeth 12 can be modified as appropriate.

[0050] The locking core member side recesses 13 provided on the outer peripheral surface of the locking core member 10 may be provided in plurality at substantially equal intervals along the outer periphery of the locking core member 10, for example, four. Figure 1A As shown, the four locking core member side recesses 13 are preferably provided radially outward from any of the eight teeth 12 provided on the inner circumferential surface of the locking core member 10. Generally, the density of the magnetic flux generated radially outward from the teeth 12 when the locking core member 10 operates as part of the motor core tends to be lower than at other locations. Therefore, as described above, by placing the locking core member side recesses 13 radially outward from the teeth 12, degradation of the magnetic properties of the motor core resulting from the provision of the locking core member side recesses 13 can be suppressed.

[0051] like Figure 1BAs shown, a portion of the inner circumferential surface of the side recess 13 of the locking core member can function as a locking piece 13A. The locking piece 13A functions as an area for the locking core member 10 to be supported on the extrusion piece 80 described later after being punched and formed. It should be noted that, in Figure 1, an example is shown in which the side recess 13 of the locking core member is set as an arc-shaped depression, and the bottom periphery of the depression functions as the locking piece 13A, but the shape of the side recess 13 of the locking core member and the configuration of the locking piece 13A can be appropriately changed within the range that maintains its function. Similarly, the number of the side recess 13 of the locking core member and the locking piece 13A can also be appropriately changed.

[0052] FIG2 is a diagram showing an example of non-locking core members supplied to the manufacturing apparatus for the laminated body according to the first embodiment of the present disclosure. Figure 2A It is a top view. Figure 2B yes Figure 2A The non-locking core member 20 constituting a part of the plurality of core members of this embodiment is as shown in FIG. Figure 2A As shown, the non-locking core member 20 can be formed from a single plate-shaped electromagnetic steel sheet with a predetermined wall thickness. Specifically, the non-locking core member 20 includes: a substantially annular yoke 21 having a through-hole formed in its center for receiving the rotor core; teeth 22, which are generally T-shaped when viewed from above and are provided on the inner circumference of the yoke 21 so as to protrude toward the center of the yoke 21; and a plurality of non-locking core member side recesses (an example of a non-locking core member side profile) 23 formed on the outer circumference of the yoke 21. In other words, the non-locking core member 20 can have the same configuration as the aforementioned locking core member 10, except that the non-locking core member side recesses 23 are included instead of the locking core member side recesses 13. Therefore, the yoke 11 and teeth 12 of the locking core member 10 can have the same size, arrangement, and number as the yoke 21 and teeth 22 of the non-locking core member 20.

[0053] The non-locking core member side recess 23 provided on the outer peripheral surface of the non-locking core member 20 may be as follows: Figure 2B As shown, a plurality of, for example, four, non-locking core members 20 are provided at approximately equal intervals along the outer circumference of the non-locking core member 20. Furthermore, the four non-locking core members 20 are preferably provided at the same positions as the above-mentioned locking core member side recesses 13, that is, radially outward of any of the eight teeth 22 provided on the inner circumferential surface of the non-locking core member 20.

[0054] Here, when the locking core member 10 and the non-locking core member 20 are made into a stacked body, the non-locking core member side recess 23 is formed at a position overlapping with the locking core member side recess 13, but the non-locking core member side recess 23 is adjusted so that its radial depth is longer than the radial depth of the locking core member side recess 13. In other words, the locking core member side recess 13 includes a portion that is located outside the non-locking core member side recess 23 when viewed from above when the locking core member 10 and the non-locking core member 20 are stacked. And, the portion located outside can function as a locking piece 13A. In more detail, as Figure 2B As shown by the dotted line in FIG, the radial depth of the locking core member side recess 13 is shorter than that of the non-locking core member side recess 23, and the region of the locking core member 10 forming this difference D1 is as shown in FIG. Figure 1B As shown, it functions as the locking piece 13A described above. It should be noted that the difference D1 may be a small difference, for example, it may be set to be equal to or less than the plate thickness of the locking core member 10 and the non-locking core member 20 .

[0055] Hereinafter, a manufacturing apparatus and a manufacturing method for manufacturing a laminated body by punching and molding the locking core members 10 and the non-locking core members 20 having the above-described configuration will be described.

[0056] (Laminate Manufacturing Apparatus)

[0057] Figure 3 1 is a schematic diagram showing an example of a manufacturing apparatus for a laminate according to the first embodiment of the present disclosure. Figure 3 As shown, the manufacturing device 1 of the laminated body of this embodiment may include: a punching and forming unit 3, which punches and forms the locking core member 10 and the non-locking core member 20 from the metal plate 2; and a laminating unit 4, which stacks the locking core member 10 and the non-locking core member 20 to form a laminated body. It should be noted that, hereinafter, Figure 3 The direction indicated by the arrow X shown in the figure is the left-right direction. Similarly, the following description will be given with the direction indicated by the arrow Y as the front-back direction and the direction indicated by the arrow Z as the up-down direction.

[0058] like Figure 3 As shown, the punching and forming section 3 of the laminate manufacturing apparatus 1 can be mainly composed of a progressive die mechanism 30. The progressive die mechanism 30 includes a conveying mechanism 31 for conveying the metal sheet 2 along a first conveying direction A1; a die unit 32 for punching the metal sheet 2 into a predetermined shape; and a punching machine 33 capable of moving the die unit 32 in a direction intersecting the first conveying direction A1.

[0059] The conveying mechanism 31 is a mechanism for conveying the metal plate 2 in a first conveying direction A1 (eg, left-right direction). The metal plate 2 conveyed by the conveying mechanism 31 may be a strip of electromagnetic steel sheets elongated in one direction.

[0060] Alternatively, a plurality of, for example, three, punching areas P1 to P3 may be sequentially provided at predetermined intervals along the conveying path of the metal sheet 2 conveyed by the conveying mechanism 31. The first to third punching areas P1 to P3 may be provided with the first to third dies 40, 50, and 60, described below, respectively. In this regard, the conveying mechanism 31 conveys the metal sheet 2 intermittently at a conveying pitch equal to the intervals between the punching areas.

[0061] The punching machine 33 can be a device that can move the die unit 32 in the vertical direction. The punching machine 33 moves the entire die unit 32 in the vertical direction. Therefore, when the die unit 32 moves up and down, the punches of the first to third dies 40, 50, and 60 described later all move up and down.

[0062] The die unit 32 includes a first die 40 that can form a plurality of locking piece forming areas X (see FIG. 1 ) on the metal plate 2 where the locking pieces 13A are formed. Figure 7A and Figure 8A ) to form the non-locking core member side recess 23; the second die 50 can form the locking core member side recess 13 in the locking piece forming area X of the metal plate 2; and the third die 60 can separate the locking core member 10 and the non-locking core member 20 from the metal plate 2. As described above, the first to third dies 40, 50, and 60 can also be respectively arranged in the first to third punching areas P1 to P3.

[0063] If the die unit 32 is described in further detail, the die unit 32 mainly includes: a punch plate 34, which constitutes an upper die and is mounted on a punch holder (not shown), and is equipped with a plurality of punches; a punch plate 35, which constitutes a lower die and is equipped with a plurality of dies; and a stripper 36, which is elastically mounted on the punch holder. It should be noted that in addition to the above-mentioned components, the die unit 32 may also include guide pins for guiding the vertical movement of the punch plate, positioning pins for horizontal positioning, springs for supporting the stripper, etc. However, these components are well known in the technical field of progressive stamping dies, and therefore illustrations and detailed descriptions are omitted.

[0064] As described above, the laminated body manufacturing apparatus 1 of this embodiment efficiently performs the subsequent lamination work in the lamination section 4 by switching between the two core components for punching and forming. Furthermore, to switch between the two core components for punching and forming, punching processing is performed using the first through third dies 40, 50, and 60. Here, it is assumed that when punching and forming two core components of different shapes, dedicated dies are prepared for each of the two core components, and the two dedicated dies are activated / deactivated to perform punching and forming of the two core components of different shapes. However, executing the activation / deactivation control of the two dies in parallel complicates control.

[0065] Taking the above points into consideration, the die unit 32 of the laminated body manufacturing apparatus 1 of this embodiment reduces the number of dies requiring start / stop control, and the structures of the first to third dies 40, 50, and 60 are designed to enable punching and forming of two different core members. Therefore, the structures of the first to third dies 40, 50, and 60 are described in detail below.

[0066] The first die 40, which forms part of the die unit 32, can be composed of a first punch 41 fixed to the punch plate 34 and a first die (not shown) provided on the punch plate 35 at a position opposite the first punch 41. Furthermore, the first die 40 is disposed in a first punching region P1 located upstream in the first conveying direction A1. This first die 40 can punch and form the non-locking core member side recess 23 in the locking piece forming region X of the metal plate 2.

[0067] In addition, the punching and forming operation performed by the first die 40 is enabled / disabled based on a control signal from the control device 100 described later. Therefore, when the punching and forming operation of the first die 40 is set to be disabled, the punching operation by the first die 40 is not performed, and the non-locking core member side recess 23 is punched out in the metal plate 2 only when the punching and forming operation of the first die 40 is enabled.

[0068] There is no particular limitation on the structure for controlling the start / stop of the first die 40, but for example, it can be achieved by providing a control cam (not shown) at the base of the first punch 41 that allows or limits the relative movement of the first punch 41 in the up and down directions relative to the punch plate 34. Specifically, when the punching and forming action of the first die 40 is stopped, the control cam is activated based on the control signal from the control device 100 and moves to a position where the base of the first punch 41 is not supported. When the first punch 41 is lowered by the punching machine 33 and contacts the metal plate 2 in this state, the first punch 41 is pressed by the metal plate 2 and introduced into the punch plate 34, and the punching action is not performed. Alternatively, a structure can be adopted in which the first punch 41 can be kept in a position where it does not contact the metal plate 2 by a control cam different from the above-mentioned control cam.

[0069] The second die 50 constituting a part of the die unit 32 can be composed of a second punch 51 fixed to the punch plate 34 and a second die (not shown) provided at a position opposite to the second punch 51 on the punch plate 35. In addition, the second die 50 is arranged at a position downstream of the first punching area P1 in the first conveying direction A1. The second die 50 can punch and form the side recess 13 of the locking core member in the locking piece forming area X of the metal plate 2. In addition, the punching action performed by the second die 50 is not controlled by start / stop as in the case of the first die 40, but is always implemented when the punching machine 33 is working.

[0070] Here, as described above, the locking core member side recess 13 includes a portion located outside the non-locking core member side recess 23 when viewed from above when the locking core member 10 and the non-locking core member 20 are stacked. Therefore, the second punch 51 for punching and forming the locking core member side recess 13 is adjusted to have an outer diameter smaller than the outer diameter of the first punch 41 for punching and forming the non-locking core member side recess 23. In addition, the configuration of the first punch 41 and the second punch 51 is adjusted so that both punch the locking piece forming area X of the metal plate 2. Therefore, after the punching action by the first die 40 is performed in the first punching area P1, the punching action of the second die 50 on the metal plate 2 conveyed to the second punching area P2 is simply to pass through the area punched by the first die 40 (i.e., blank punching).

[0071] As described above, when the second die 50 is blanked for the metal plate 2 that has been punched by the first die 40, the metal plate 2 will not come into contact with the second punch 51 during the punching action performed by the second die 50. Therefore, fine chips that may be generated in conjunction with the punching action will not be generated. Therefore, damage to the metal plate 2 and the die caused by contact with such fine chips can be suppressed. In addition, deformation of the metal plate 2 caused by contact between the metal plate 2 and the second punch 51 can be suppressed. Moreover, since the punching by the second die 50 is not performed, the locking core member side recess 13 will not be formed in the non-locking core member 20.

[0072] The third die 60, which constitutes part of the die unit 32, can be composed of a third punch 61 fixed to the punch plate 34 and a third die 62 provided on the punch plate 35 at a position opposite the third punch 61. Furthermore, the third die 60 is disposed downstream of the second punching area P2 in the first conveying direction A1. This third die 60 is a die for performing so-called peripheral blanking and is capable of blanking and forming the peripheral portions of the locking core member 10 and the non-locking core member 20. Furthermore, the blanking action performed by the third die 60 is also constantly performed during the operation of the punching machine 33, similar to the second die 50.

[0073] like Figure 3 As shown, the stacking section 4 of the stacking body manufacturing device 1 includes at least: a receiving member 70 for receiving the locking core member 10 and the non-locking core member 20 separated from the metal plate 2; and an extrusion member 80 as an example of a supporting mechanism, which can support the locking piece 13A of the locking core member 10 separated from the metal plate. It should be noted that Figure 3 In the laminated portion 4, a cross-sectional view of the locked core member 10 and the non-locked core member 20 after punching is shown, which is cut at a position corresponding to the CC line shown in FIG1. Figure 3 In order to facilitate understanding of the state of the locking piece 13A in the laminated portion 4, only the size of the locking piece 13A is shown larger than the actual size and the through hole formed in the center of each core member 10, 20 and the teeth 12, 22 are omitted. Figure 3 In the stacking portion 4 , the core members are shown with a small gap therebetween in order to visually recognize the boundaries between the core members transported in a stacked state.

[0074] The receiving member 70 is, for example, located below the third die 62 and may be composed of a fixture capable of receiving the locked core member 10 and the non-locked core member 20 output from the progressive die mechanism 30. The receiving member 70 may include: a base 71 capable of receiving the locked core member 10 and the non-locked core member 20 output from the progressive die mechanism 30; a plurality of support rods 72 extending upward from the upper surface of the base 71 and supporting the locked core member 10 and the non-locked core member 20 from the side; and a conveying arm 73 for moving the base 71 in any direction.

[0075] Alternatively, in the above configuration, the transport arm 73 can be a transport arm that supports the lower portion of the base 71 and can move the base 71 in a predetermined direction, such as at least one of the front-to-back direction, the left-to-right direction, and the up-to-down direction. Furthermore, the transport arm 73 can function as a rotation mechanism for rotating the base 71. In other words, a configuration can be employed in which the stacked materials placed on the base 71 can be rotationally stacked by rotating the supported base 71 about a rotation axis extending in the up-to-down direction.

[0076] The structure of the receiving member 70 is an example and is not limited to the above structure as long as it can receive the core members 10 and 20 supplied from the progressive die mechanism 30. Specifically, the receiving member 70 may be formed by other conveying means such as a conveyor or a ramp.

[0077] Alternatively, the extrusion member 80 may be disposed between the third die 62 and the receiving member 70 to laterally support the latching core members 10 and the non-latching core members 20 separated from the metal plate 2 and supplied from the progressive die mechanism 30, and to transport them along a second transport direction A2 that intersects the first transport direction A1. In this embodiment, the second transport direction A2 corresponds to the vertical direction.

[0078] Figure 4 It is along Figure 3 The extrusion member 80 is arranged on the downstream side of the third punch 62 in the second conveying direction A2, and supports the locking core member 10 and the non-locking core member 20 output from the progressive die mechanism 30 from the side and can convey them along the conveying direction. Figure 3 and Figure 4 As shown, the extrusion 80 can be composed of a substantially cylindrical member, one end of which is connected to the lower end of the third die 62. In addition, the extrusion 80 can be delivered in a stacked state with the latching core member 10 and the non-latching core member 20 that have been punched and pressed out from under the third die 62.

[0079] The locked core members 10 and the non-locked core members 20 output from the progressive die mechanism 30 can be sequentially input and supported at the upper end of the extrusion 80. Therefore, whenever a locked core member 10 or a non-locked core member 20 is newly input into the extrusion 80, the locked core members 10 and the non-locked core members 20 already held in the extrusion 80 are pressed by the fed locked core member 10 or the non-locked core member 20 and are fed downward in the extrusion 80 by an amount corresponding to their wall thickness.

[0080] In addition, the extrusion member 80 may include: an upstream portion 81 of the extrusion member, located on the upstream side of the second conveying direction A2, supporting from the side both the locking core component 10 and the non-locking core component 20 passing through the extrusion member 80; and a downstream portion 82 of the extrusion member, located on the downstream side of the conveying direction of the core component, supporting from the side the locking plate 13A of the locking core component 10 passing through the extrusion member 80.

[0081] like Figure 4 As shown, the inner circumferential surface 83 of the upstream portion 81 of the extrusion can be adjusted to a size that matches the shapes of the locking core members 10 and the non-locking core members 20 conveyed within the extrusion 80. Thus, the sides (i.e., the outer peripheries) of the locking core members 10 and the non-locking core members 20 passing through the extrusion 80 can be abutted and supported by the inner circumferential surface 83 of the upstream portion 81 of the extrusion.

[0082] For the inner peripheral surface 83 of the upstream portion 81 of the extrusion member of this embodiment, as shown in FIG. Figure 4 As shown, an example is shown in which a shape is provided to match the outer peripheral shape of the locking core member 10 and the non-locking core member 20 except for the locking core member side recess 13 and the non-locking core member side recess 23. However, the specific structure of the inner peripheral surface 83 is not limited to this as long as it can support the locking core member 10 and the non-locking core member 20 from the side. For example, it can also be provided to have a shape in which the inner peripheral surface 83 only abuts against a portion of the outer peripheral surface of each core member. In addition, Figure 3 10 and other figures described later illustrate a case where the number of core members transported within the extrusion 80 is relatively small for ease of understanding. However, the number of core members that can be transported within the extrusion 80 may be several tens to several hundreds. Furthermore, the total number of core members constituting the laminate may also be several tens to several hundreds.

[0083] Figure 5 It is along Figure 3 A schematic cross-sectional view obtained by cutting along the E-E line of FIG. Figure 5As shown, the downstream portion 82 of the extrusion piece may have a locking protrusion 85 extending in the center direction of the extrusion piece 80 at a position on its inner circumference facing the locking piece 13A that locks the core member 10. The locking protrusion 85 can abut against the locking piece 13A from the side and support the core member 10.

[0084] Here, in the downstream portion 82 of the extrusion, neither the locking core member 10 nor the non-locking core member 20 is supported on the inner circumference of the extrusion, except for the portion where the locking protrusion 85 is formed. In other words, a gap 84 is formed between the inner circumference of the downstream portion 82 of the extrusion, except for the portion where the locking protrusion 85 is formed, and the outer circumference of each core member. It should be noted that the shape of the inner circumference of the downstream portion 82 of the extrusion can be appropriately modified to match the shape of the locking core member 10 and the non-locking core member 20 to be transported.

[0085] When the extrusion member 80 described above is used, only the latching core member 10 is conveyed while supported in the downstream portion 82 of the extrusion member. The non-latching core member 20 is not supported laterally by the extrusion member 80, but moves within the downstream portion 82 of the extrusion member while resting on the upper surface of the latching core member 10 located downstream. Furthermore, the non-latching core member 20 within the downstream portion 82 of the extrusion member is simultaneously ejected from the extrusion member 80 as the latching core member 10 located below it is ejected from the lower end of the extrusion member 80.

[0086] Furthermore, in order to control the above-mentioned components, the manufacturing apparatus 1 of this embodiment may further include a control device 100. The control device 100 may be, for example, Figure 3 As indicated by the dotted lines in the figure, the components can be connected to each other in a communicative manner via wired or wireless communication. The control device 100 can be a computer including a sequencer (Programmable Logic Controller: PLC). The control device 100 can at least execute the start / stop control of the punching operation performed by the first die 40.

[0087] As described above, if the unlatched core member 20 and the latched core member 10 are simultaneously discharged, the time interval between the discharge of the unlatched core member 20 and the subsequent discharge of the latched core member 10 from the lower end of the extrusion 80 becomes longer. Therefore, as long as the receiving member 70 can be replaced or rotated and stacked at this timing, the device does not need to be temporarily stopped for replacement or rotational stacking of the receiving member 70. Furthermore, the core members can be stacked continuously and accurately without using a special device for controlling the timing of supplying the core members to the receiving member 70.

[0088] In this embodiment, an extrusion member 80 is used as an example of a support mechanism capable of supporting the locking piece 13A, and the extrusion member 80 is used to selectively lock the locking piece 13A that locks the core member 10, thereby controlling the supply timing to the receiving member 70. However, any support structure other than the extrusion member 80 may be used as long as it can perform similar control.

[0089] As described above, the laminate manufacturing apparatus 1 of this embodiment selectively punches and forms the core members into two types: a locking core member 10 having a locking tab and a non-locking core member 20 having no locking tab. By supporting the locking tab at arbitrary timings, the timing of supplying the core members can be controlled. Therefore, the core members can be stacked without using any special equipment.

[0090] Furthermore, in the laminate manufacturing apparatus 1 of this embodiment, the locking core member side recesses 13 and the non-locking core member side recesses 23 are provided at positions common to the locking core member 10 and the non-locking core member 20, and the locking tabs 13A are formed by slightly varying the depths of these recesses. Therefore, the influence of the presence or absence of the locking tabs 13A on the magnetic properties of the motor core can be substantially eliminated.

[0091] It should be noted that, in the laminate manufacturing apparatus 1 of the present embodiment described above, the second die 50 and the third die 60 are respectively arranged in the second punching area P2 and the third punching area P3. However, the second die 50 and the third die 60 can also be provided as a single die. Specifically, instead of the second die 50 and the third die 60, a fourth die formed by combining the second die 50 and the third die 60 can be arranged in a fourth punching area located downstream of the first punching area P1 in the first conveying direction A1. In this way, the number of dies and punching areas can be reduced, thereby improving the efficiency of the punching and forming process.

[0092] Furthermore, in this embodiment, as examples of the locking core member side profile formed in the locking tab formation region X, a profile including the locking core member side recess 13 and the non-locking core member side recess 23 is shown, but these profiles are not limited to recesses. Specifically, for example, the locking core member side profile may be formed with a convex portion that protrudes outward and functions as a locking tab in the locking tab formation region X of the locking core member 10, while the non-locking core member side profile may be formed with a curved surface that is continuous with the other outer peripheral surfaces of the non-locking core member 20 in the locking tab formation region X of the non-locking core member 20. In this case, the locking core member side profile includes a portion (specifically, the convex portion) that is located outside the non-locking core member side profile when viewed from above when the locking core member and non-locking core member are stacked.

[0093] (Method for producing laminate)

[0094] Next, the manufacturing method of the stacked body of the present embodiment is described. In the following description, an example is given of a case where a stacked body is manufactured using the manufacturing device 1 of the stacked body described above, but the manufacturing method of the stacked body disclosed herein can also be implemented by a device other than the manufacturing device 1. The manufacturing method of the stacked body of the present embodiment implemented by the manufacturing device 1 of the stacked body can be provided in the form of a program for causing the processor of the control device 100 that controls each component of the manufacturing device 1 of the stacked body to perform a prescribed action, or can be provided in the form of a non-temporary computer-readable recording medium storing the program. It should be noted that the description of the effects shown below also serves as a description of the effects of the manufacturing device 1 of the present embodiment.

[0095] First, the die forging process for forming the locking core members 10 and the non-locking core members 20 in the laminate manufacturing method of the present embodiment will be described. The die forging process in the laminate manufacturing method of the present embodiment selectively punches the locking core members 10 and the non-locking core members 20 from the metal plate 2 being conveyed along the first conveying direction A1, and includes at least the following steps: when forming the non-locking core members 20, punching out a plurality of locking tab forming areas X of the metal plate 2 using a first die 40 that forms the non-locking core member side recesses 23 of the non-locking core members 20; when forming the locking core members 10 and the non-locking core members 20, punching out the locking tab forming areas X of the metal plate 2 using a second die 50 that forms the locking core member side recesses 13 of the locking core members 10; and punching out the metal plate 2 using a third die 60 to separate the locking core members 10 and the non-locking core members 20 from the metal plate 2.

[0096] Figure 6 This is a flowchart showing an example of a method for manufacturing a laminated body according to the first embodiment of the present disclosure. Figure 6 As shown, first, intermittent conveyance of the strip-shaped metal plate 2 is started by the conveying mechanism 31 (step S01). In this intermittent conveyance, the distance between the punching areas P1 to P3 arranged along the first conveying direction A1 can be set as a conveyance pitch.

[0097] Next, the type of core member to be formed in the first punching area P1 is determined (step S02) by referring to the operation process input by the user of the manufacturing apparatus 1. As a result of this determination, if the core member to be formed in the first punching area P1 is a non-locking core member 20 (yes in step S03), the first die 40 is set to an active state (step S04). On the other hand, if the core member to be formed in the first punching area P1 is not a non-locking core member 20, that is, a locking core member 10 (no in step S03), the first die 40 remains in an inactive state and the process proceeds to the next step.

[0098] When the start / stop control of the first die 40 is completed, the conveyance by the conveying mechanism 31 is stopped, and the punching machine 33 is activated to perform the punching operation (step S05). At this time, if the metal sheet 2 is also present in the second punching area P2 and the third punching area P3, the punching operation is performed by the second die 50 and the third die 60 in addition to the first die 40. When the punching operation is completed, the conveyance of the metal sheet 2 is resumed (step S06), and the process returns to step S02 to perform the above series of operations.

[0099] Next, the change in the shape of the metal plate 2 when the fixed core member 10 or the non-fixed core member 20 is punched out in a specific area of ​​the metal plate 2 will be described using Figures 7 and 8. It should be noted that in the following description, in order to distinguish which specific area of ​​the metal plate 2 is to be formed into which core member, the area where the fixed core member 10 is punched out is shown as "metal plate 2-10", and the area where the non-fixed core member 20 is punched out is shown as "metal plate 2-20".

[0100] Figure 7 is Figure 6 The schematic top view of the metal plate in each operating state is an explanatory diagram showing the state of the metal plate in the case of punching and locking the core member. First, referring to FIG7 , the case of punching and forming the locking core member 10 at a specific position of the metal plate 2 will be described. For the metal plate 2-10, before being conveyed into the progressive die mechanism 30, as shown in FIG7 Figure 7AAs shown, it is preferable to preform the teeth 12 that lock the core member 10. The forming of the teeth 12 can be performed using a progressive die mechanism similar to the progressive die mechanism 30 described above.

[0101] The metal plate 2-10 is conveyed by the conveying mechanism 31. When the metal plate 2-10 reaches the first punching area P1, the punching machine 33 is operated to lower the die unit 32. Here, since the core member 10 is formed and locked in the metal plate 2-10 shown in FIG8, the punching operation performed by the first die 40 is stopped (see FIG8). Figure 6 Therefore, Figure 7B As shown, the first punching hole 41A formed by the first die 40 is not formed in the metal plate 2-10 reaching the first punching area P1 (see Figure 8B ).

[0102] When the die unit 32 in the first punching area P1 is lowered, the metal plate 2-10 is transported to the second punching area P2 by the conveying mechanism 31. When the metal plate 2-10 reaches the second punching area P2, the punching machine 33 is activated again to lower the die unit 32. The second die 50 is always in the active state, so that the area X is formed on the four locking pieces of the metal plate 2-10 by this lowering. Figure 7C As shown, a second punch hole 51A is formed by the second die 50 .

[0103] When the lowering action of the die unit 32 in the second punching area P2 is completed, the metal plate 2-10 is conveyed to the third punching area P3 by the conveying mechanism 31. When the metal plate 2-10 reaches the third punching area P3, the punching machine 33 is activated again to lower the die unit 32. The third die 60 is a die for peripheral punching and is always in an active state like the second die 50. Therefore, by utilizing this lowering action, as shown in FIG. Figure 7D As shown, the locking core member 10 is punched out from the metal plate 2 - 10 and fed downwardly of the third die 62 .

[0104] Figure 8 is Figure 6 The schematic top view of the metal plate in each operating state shown is an explanatory diagram showing the state of the metal plate in the case of punching out the non-locking core member. Next, referring to FIG8 , the case of punching out the non-locking core member 20 at a specific position of the metal plate 2 will be described. As with the metal plate 2-10, the metal plate 2-20 is also conveyed to the progressive die mechanism 30, as shown in FIG8 . Figure 8A As shown, it is preferred that the teeth 22 of the non-locking core member 20 are pre-formed.

[0105] The metal plate 2-20 is transported by the transport mechanism 31. When the metal plate 2-20 reaches the first punching area P1, the punching machine 33 is operated to lower the die unit 32. Here, since the non-locking core member 20 is formed on the metal plate 2-20 shown in FIG8, the punching operation performed by the first die 40 is in an active state (see FIG8 ). Figure 6 Therefore, the four locking pieces of the metal plate 2-20 form a region X, such as Figure 8B As shown, a first punch hole 41A is formed by the first die 40 .

[0106] When the die unit 32 in the first punching area P1 is lowered, the metal plate 2-20 is transported to the second punching area P2 by the conveying mechanism 31. When the metal plate 2-20 reaches the second punching area P2, the punching machine 33 is activated again to lower the die unit 32. The second die 50 is always in the active state, so that the area X is formed on the four locking pieces of the metal plate 2-10 by this lowering. Figure 8C As shown, the second die 50 performs a punching operation. However, the metal plate 2-20 already has a first punching hole 41A formed in the first punching area P1. Furthermore, as described above, the locking core member side recess 13 includes a portion located radially outward of the non-locking core member side recess 23 when stacking the locking core member 10 and the non-locking core member 20 in a plan view. Therefore, at least the inner portion of the second punch 51 passes through the first punching hole 41A without contacting the metal plate 2.

[0107] Here, during the punching operation performed by the second die 50, for example, the size and shape of the second punch 51 are as follows: Figure 8C The size and shape shown are adjusted to be completely contained within the first punched hole 41A to prevent the second punch 51 from contacting a portion of the radially outer side of the first punched hole 41A and generating fine chips.

[0108] When the lowering action of the die unit 32 in the second punching area P2 is completed, the metal plate 2-20 is conveyed to the third punching area P3 by the conveying mechanism 31. When the metal plate 2-20 reaches the third punching area P3, the punching machine 33 is activated again to lower the die unit 32. The third die 60 is a die for peripheral punching and is always in an active state like the second die 50. Therefore, by utilizing this lowering, as shown in FIG. Figure 8D As shown, the non-locking core member 20 is punched out from the metal plate 2 - 20 and fed downwardly of the third die 62 .

[0109] As described above, according to the punching process of the laminated body manufacturing method of this embodiment, two core members having different outer shapes, namely, the locking core member 10 and the non-locking core member 20, can be selectively forged by simply controlling the start / stop of the first die 40.

[0110] Next, the process of manufacturing a laminated body by stacking the die-forged locking core members 10 and non-locking core members 20 in the method for manufacturing a laminated body according to this embodiment will be described. The stacking process in the method for manufacturing a laminated body according to this embodiment includes at least the following steps: supporting the locking tabs 13A of the locking core members 10 punched out of the metal plate 2, thereby controlling the timing of supplying the locking core members 10 and non-locking core members 20 to the receiving member 70. In this embodiment, this step is primarily accomplished using the extrusion member 80.

[0111] Figure 9 It shows the following Figure 6 FIG10 is a flowchart showing an example of a process to be performed after each process shown in FIG10. Figure 9 The method for manufacturing the laminate shown in FIG. Figure 3 The following is an explanatory diagram of the operation of the main parts of the manufacturing device. Figure 9 10 , a process of manufacturing a laminated body in the method for manufacturing a laminated body according to the present embodiment will be described.

[0112] The lamination process in the method for manufacturing the laminated body of this embodiment is as follows Figure 9 As shown, the above-mentioned punching and forming process is performed starting from the output of the locked core member 10 and the unlocked core member 20 from the progressive die mechanism 30 (step S11).

[0113] Here, in the laminated body manufacturing method of this embodiment, an example is shown in which each time a core element group G consisting of four core elements is stacked on a receiving member 70, rotational stacking or replacement of the receiving member 70 is performed. In this regard, it is preferred that, among the multiple (four in FIG. 8 ) core elements constituting the core element group G, one or more core elements located downstream are designated as locking core elements 10, while one or more core elements located upstream are designated as non-locking core elements 20. In other words, it is preferred that, among the multiple core elements constituting the core element group G, at least the core element initially punched out by the progressive die mechanism 30 is designated as the locking core element 10, and the remaining core elements are designated as non-locking core elements 20. This is because, during rotational stacking or replacement of the receiving member 70, the core member located furthest downstream of the core member group G needs to be supported in order to temporarily stop the supply of each core member to the receiving member 70. It should be noted that in this embodiment, an example is shown in which two locking core members 10 and two non-locking core members 20 are alternately punched out in the progressive die mechanism 30. Thus, one core member group G is formed by stacking two locking core members 10 and two non-locking core members 20 in sequence from the downstream side.

[0114] The locking core members 10 and the non-locking core members 20 punched out by the third die 60 are pressed downward by the third punch 61 and moved downwardly toward the third die 62. They are then pressed into the extrusion 80 from the upper end portion of the extrusion 80 connected to the third die 62. At least a portion of the outer circumference of the locking core members 10 and the non-locking core members 20 pressed into the extrusion 80 is supported from the side by the inner circumference 83 of the upstream portion 81 of the extrusion, and are transported in a stacked state within the extrusion 80 (step S12).

[0115] When the extrusion piece 80 is conveying each core member, the locking core member 10 and the non-locking core member 20 conveyed from the upstream portion 81 of the extrusion piece will reach the downstream portion 82 of the extrusion piece. The locking core member 10 of each core member that has reached the downstream portion 82 of the extrusion piece maintains support from the side by contacting the locking protrusion 85 provided on the inner peripheral surface of the downstream portion 82 of the extrusion piece through the locking piece 13A. On the other hand, the non-locking core member 20 does not have the locking piece 13A, so the support from the side will be released, and the non-locking core member 20 is placed and supported on the upper surface of the locking core member 10 located on the downstream side (refer to Figure 10A ).

[0116] As the extrusion 80 further conveys the core members, the locking core member 10 located most downstream among the core members constituting one core member group G is discharged from the lower end portion of the extrusion 80. Subsequently, the locking core member 10 conveyed within the downstream portion 82 of the extrusion with its lower surface abutting against the upper surface of the locking core member 10 located most downstream (hereinafter, for ease of explanation, this locking core member 10 is referred to as the "second locking core member 10") is similarly discharged from the lower end portion of the extrusion 80.

[0117] Here, the second locking core member 10 is placed on its upper surface and supported by two non-locking core members 20 included in the same core member group G. From the downstream portion 82 of the extrusion member, the non-locking core members 20 are not supported. Therefore, when the second locking core member 10 is ejected from the lower end portion of the extrusion member 80, as shown in FIG. Figure 10B As shown, the two non-locking core members 20 are also simultaneously fed from the lower end of the extrusion 80 . At this time, the locking core member 10 stacked upstream of the two non-locking core members 20 is fed at a position away from the lower end of the extrusion 80 .

[0118] When the second locking core member 10 and the two non-locking core members 20 supported on the upper surface thereof are placed on the base 71 of the receiving member 70 (yes in step S13), as shown in FIG. Figure 10C As shown, rotational stacking or replacement of the receiving member 70 is performed based on the receiving member 70 (process S14). Among them, rotational stacking can be implemented by rotating the base 71 on which a core member group G is placed by causing the conveying arm 73 to move. Here, at the timing of executing the rotational stacking, the locking core member 10 that is then conveyed to the receiving member 70 is conveyed at a position away from the lower end of the extrusion member 80 as described above. Therefore, a longer time is ensured before the locking core member 10 is output from the lower end of the extrusion member 80. Therefore, during the execution of the rotational stacking, a new core member will not be output from the extrusion member 80. In addition, in process S14, the replacement of the receiving member 70 can be performed as long as the desired number of core members 10 are stacked on the base 71. When the rotational stacking or replacement of the receiving member 70 is completed in process S14, it is sufficient to return to process S13 and wait until the subsequent output of the core member group G.

[0119] As described above, according to the stacking process of the method for manufacturing a stacked body of this embodiment, the timing of supplying each core member discharged from the lower end of the extrusion 80 can be adjusted simply by designing the shape of a portion of the inner circumferential surface of the extrusion 80. Therefore, stacked bodies can be manufactured continuously with a simple structure. Furthermore, by configuring the downstream portion 82 of the extrusion 82 to support and retain only the core members 10, the time between each discharge of the core member group G and the next discharge is ensured to be long. Therefore, rotary stacking and replacement of the receiving member 70 can be performed without stopping the device. Consequently, the production efficiency of the stacked body is improved.

[0120] Alternatively, in the above embodiment, for one core member group G, the example is shown in which two downstream core members are provided as locking core members 10 and two upstream core members are provided as non-locking core members 20. However, it is also possible to provide only one downstream core member as the locking core member 10 and the remaining three core members as non-locking core members 20. In this way, by increasing the number of non-locking core members 20 constituting the core member group G, the time until the core members included in the subsequent core member group G are discharged from the extrusion piece 80 can be ensured to be longer.

[0121] The present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present disclosure. All of these modifications are included in the technical concept of the present disclosure.

[0122] All documents, including publications, patent applications, and patents cited in this specification are herein incorporated by reference to the same extent as if each document were specifically indicated to be incorporated by reference and to the same extent as if the contents were fully set forth herein.

[0123] With regard to the use of nouns and the same indicators used in association with the description of the present disclosure (especially in association with the following claims), as long as there is no special indication in this specification or there is no obvious contradiction with the context, it is interpreted as covering both single and multiple. With regard to the terms "having", "having", "including" and "comprising", as long as there is no special indication, it is interpreted as an open term (i.e., "including but not limited to..."). Unless otherwise specified in this specification, the specific description of the numerical range in this specification is intended only to serve as a shorthand method for referring to each value within the range one by one, as listed one by one in this specification, and each value is cited in the specification. As long as there is no special indication in this specification or there is no obvious contradiction with the context, all methods described in this specification can be carried out in all appropriate orders. All examples or illustrative wordings used in this specification (such as "etc.") are intended only to better illustrate the present disclosure, and do not set limitations on the scope of the present disclosure, as long as there is no special claim. Any wording in the specification is not interpreted as representing an element not recorded in the claims as an indispensable element for the implementation of the present disclosure.

[0124] In order to implement the present disclosure, this specification includes the best form known to the inventors and describes the preferred embodiments of the present disclosure. For those skilled in the art, if the above description is read, the deformation of these preferred embodiments will be obvious. The inventors expect that the skilled person will appropriately apply such deformation and anticipate that the present disclosure will be implemented by methods other than those specifically described in this specification. Therefore, as permitted by applicable law, the present disclosure includes all modifications and equivalents of the contents recorded in the claims attached to this specification. Moreover, as long as it is not particularly pointed out in this specification or is clearly not inconsistent with the context, any combination of the above elements in all deformations is also included in the present disclosure.

Claims

1. A method for manufacturing a laminated body, comprising selectively punching a plurality of core members including locking core members and non-locking core members from a metal plate conveyed along a first conveying direction, and stacking the plurality of punched core members, wherein the locking core members have locking tabs at multiple locations on their outer circumferential surfaces, and the non-locking core members do not have such locking tabs, the method comprising the following steps: When forming the non-locking core member, a first die capable of forming a side profile of the non-locking core member formed on the outer peripheral surface of the non-locking core member is used to punch out a plurality of locking piece forming areas of the metal plate where the locking pieces are to be formed; When the locking core member and the non-locking core member are formed, a second die capable of forming a side profile of the locking core member including the locking piece formed on the outer peripheral surface of the locking core member is used to punch out the locking piece forming area of ​​the metal plate, wherein: The locking core member side profile includes a portion located outside the non-locking core member side profile in a plan view when the locking core member and the non-locking core member are stacked. punching the metal plate using a third die to separate the locking core member and the non-locking core member from the metal plate; as well as The locking pieces of the locking core members separated from the metal plate are supported, thereby controlling the supply timing of the locking core members and the non-locking core members to the receiving member.

2. The method for producing a laminate according to claim 1, wherein: A first punching area, a second punching area, and a third punching area are provided in order from the upstream side of the first conveying direction along the first conveying direction. The process of punching the metal plate using the first die is performed in the first punching area, the process of punching the metal plate using the second die is performed in the second punching area, and the process of punching the metal plate using the third die is performed in the third punching area.

3. The method for producing a laminate according to claim 1, wherein: A first punching area and a fourth punching area are provided in order from the upstream side of the first conveying direction along the first conveying direction. The process of punching the metal plate using the first die is implemented in the first punching area, and the process of punching the metal plate using the second die and the process of punching the metal plate using the third die are implemented in the fourth punching area by a fourth die composed of the second die and the third die.

4. The method for producing a laminate according to claim 1, wherein: The process of controlling the supply timing of the locking core member and the non-locking core member to the receiving member comprises the following steps: supplying the locking core member and the non-locking core member separated from the metal plate to an extrusion member; and supplying the core member to the receiving member from an end portion of the extrusion member on the downstream side of a second conveying direction intersecting the first conveying direction, The extrusion member includes: an extrusion member upstream portion located on the upstream side of the second conveying direction of the extrusion member, and supporting the plurality of the locking core members and the non-locking core members passing through the extrusion member from the side; and an extrusion downstream portion located on the downstream side of the extrusion in the second conveying direction and supporting the locking piece passing through the locking core member in the extrusion from the side.

5. A device for manufacturing a laminate, comprising: The conveying mechanism conveys the metal plate that can be selectively punched and formed into a plurality of core components including a locking core component and a non-locking core component along a first conveying direction, wherein: The locking core member has locking pieces at multiple locations on its outer circumference, and the non-locking core member does not have the locking pieces; a first die capable of forming a non-locking core member side profile shape formed on the outer peripheral surface of the non-locking core member in a plurality of locking piece forming areas of the metal plate where the locking pieces are to be formed; a second mold capable of forming, in the locking piece forming region of the metal plate, a locking core member side profile shape including the locking piece formed on the outer peripheral surface of the locking core member, wherein the locking core member side profile shape includes a portion located outside the non-locking core member side profile shape when viewed from above when the locking core member and the non-locking core member are stacked; a third mold capable of separating the locking core member and the non-locking core member from the metal plate; a punching machine capable of moving the first die, the second die, and the third die; a receiving member for receiving the locking core member and the non-locking core member separated from the metal plate; a supporting mechanism capable of supporting the locking piece of the locking core member separated from the metal plate; and A control device controls the implementation of the punching action performed by the first die.

6. The manufacturing apparatus of a laminated body according to claim 5, wherein: The support mechanism includes an extrusion member capable of conveying the locking core member and the non-locking core member separated from the metal plate in a second conveying direction intersecting the first conveying direction. The extrusion member includes: an extrusion member upstream portion located on the upstream side of the second conveying direction of the extrusion member, and supporting the plurality of the locking core members and the non-locking core members passing through the extrusion member from the side; and an extrusion downstream portion located on the downstream side of the extrusion in the second conveying direction and supporting the locking piece passing through the locking core member in the extrusion from the side.

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