Manufacturing equipment, manufacturing methods, shearing machines

Abstract

To provide a manufacturing device which increases a processing speed of a segment type multilayer core.SOLUTION: A manufacturing device for manufacturing a segment type multilayer core 1 by dividing a multilayer core of an armature that a rotary electric machine comprises for each predetermined angle range defining a rotation axis of the rotary electric machine as a center comprises conveyance sections 2, 5 and 6 and shear processing machines 4 and 20. The conveyance sections 2, 5 and 6 convey a band steel plate as a processed material 11 in a length direction. The shear processing machines 4 and 20 include punches 41 and 211 and dies 42 and 221 for shearing the processed material 11, which is conveyed by the conveyance sections 2, 5 and 6, into a coupling core 12, which includes a plurality of cores 14 constituting the segment type multilayer core 1 and a coupling part 15 coupling the plurality of cores 14 in the length direction, and a continuous scrap 13 formed by continuous parts of the portions excluding the coupling core 12 from the processed material 11.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a manufacturing apparatus and a manufacturing method for manufacturing a segmental laminated core in which a laminated core of an armature included in a rotating electrical machine is divided for each predetermined angular range centered on the rotating shaft of the rotating electrical machine, and a shearing machine for manufacturing a core constituting the segmental laminated core.

Background Art

[0002] In recent years, in response to the trend of electrification in the automotive field, in addition to small motors such as starters and alternators, the main motors have an expanding need for medium and large motors used as power sources for mobility, such as motor generators and in-wheel motors.

[0003] Generally, a motor includes a rotor that is fixed to a shaft and rotates, and a stator that surrounds the outer periphery of the rotor. The stator is configured by winding a coil around a stator core (i.e., a laminated core) made of laminated steel plates. The stator core is classified into two structures. One structure is an integral stator core having a yoke connected in a ring shape and a plurality of teeth protruding radially inward from the yoke. The other structure is a segmental stator core in which a plurality of segmental laminated cores divided for each predetermined angular range (e.g., for each tooth) centered on the rotating shaft of the rotating electrical machine are arranged in the circumferential direction.

[0004] Conventionally, in small motors, due to the small amount of material used, integral stator cores with less loss of magnetic flux flowing through the magnetic circuit have been widely used. The integral stator core has a disadvantage in that a large amount of scrap is discharged from the workpiece because a steel plate as a workpiece is punched into an annular shape. Further, when the size of the motor increases to medium or large size, the die for punching the steel plate integrally also becomes large, and the press working machine for processing it also exceeds several hundred tons, so the processing speed does not increase and the productivity decreases. Along with the fact that the press working machine becomes medium and large-sized equipment, problems such as the need for basic construction, high-rise factories, and increased equipment investment become apparent, and the initial cost increases.

[0005] On the other hand, changing the motor stator structure to a segmented stator reduces the size of the components that make up the multiple segmented laminated cores. This also reduces the size of the molds and press machines used to remove these components (i.e., each core), allowing for faster processing and improved material yield. However, segmenting the stator core increases the number of parts to be processed by a factor of N, making it difficult to increase processing speed in line with the increased quantity. For example, a segmented stator core divided into 24 sections has 24 times more parts than an integrated stator core, but the increase in processing speed of the press machine through miniaturization of the molds and press machines is limited to about 5 times, for example, from 100 SPM to 500 SPM. SPM stands for Shots Per Minute. To achieve the same productivity in manufacturing segmented stators as in manufacturing integrated stator cores, it would be necessary to install five times as many press machines, which is not practical.

[0006] The limit of press working speed is determined by two factors: the limit of the press machine itself and the limit of the processing mechanism of the press punching. The processing speed limit of a large press machine is, for example, around 100 SPM, and the speed is limited by the machine's own limit. On the other hand, when using a small press machine, the machine itself can be increased to a speed of, for example, 1000 SPM to 2000 SPM, but the processing mechanism of the press punching causes "waste lifting," where the punched material (i.e., small waste material) floats up with the up-and-down movement of the punch and gets stuck under the workpiece. To suppress this waste lifting, measures such as adding a micron-order radius or chamfer to the cutting edge of the lower die that discharges the waste, or adding grooves to the die cavity where the waste falls, are sometimes taken. However, it is unavoidable that waste lifting occurs at a rate of, for example, 1 in 1 million times, on the order of ppm. Furthermore, the punched core also experiences similar lifting due to its small size. Furthermore, medium-sized to large motors installed in vehicles and other applications require increased torque, necessitating thinner steel sheets for the laminated core. As the steel sheets become thinner, the number of laminated stator cores increases, leading to a greater demand for improved productivity.

[0007] Incidentally, the manufacturing method described in Patent Document 1, as shown in Figures 33 and 34, involves punching out comb-shaped core sheets 91 and 92 from a workpiece 90 using a press machine, and then winding them spirally to form a rotor core 96. In this manufacturing method, two rows of comb-shaped core sheets 91 and 92 are punched out from a strip of steel sheet, which is the workpiece 90. Within the workpiece 90, the two rows of comb-shaped core sheets 91 and 92 are arranged such that the multiple teeth 94 of the other core sheet 92 are in close contact with the multiple teeth 93 of the other core sheet 91. This reduces the amount of waste material 95 and 97 (i.e., small scraps) generated between the two rows of core sheets 91 and 92 during the press processing to punch out the two rows of core sheets from the workpiece. In Figure 33, the areas that become waste material 95 and 97 are shown with hatching. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Special Publication No. 61-11065 [Overview of the project] [Problems that the invention aims to solve]

[0009] However, when forming a rotor core 96 by spirally winding a comb-shaped core sheet, as in the manufacturing method described in Patent Document 1, there is a problem in that a step is created on a part of the surface of the rotor core 96 that faces the axial direction (i.e., the direction in which the axis extends). Furthermore, in this manufacturing method, during press working, shavings 95 and 97 are generated between the two rows of core sheets 91 and 92, resulting in shavings being thrown up. Therefore, the manufacturing method described in Patent Document 1 is not useful for increasing the processing speed of segment-type laminated cores used in rotating electric machines.

[0010] In view of the above, the present invention aims to provide a manufacturing apparatus and a manufacturing method that realizes a high processing speed for segmented laminated cores. Furthermore, the present invention aims to provide a shearing machine that realizes a high processing speed for the cores constituting a segmented laminated core. [Means for solving the problem]

[0011] To achieve the above objective, the invention according to claim 1 is a manufacturing apparatus for manufacturing a segment-type laminated core (1) obtained by dividing the laminated core of an armature of a rotating electric machine into predetermined angular ranges around the rotation axis of the rotating electric machine, comprising a conveying unit (2, 5, 6) and a shearing machine (4, 20). The conveying unit conveys a strip of steel plate as a workpiece (11) in the longitudinal direction. The shearing machine has punches (41, 211) and dies (42, 221) that shear the workpiece conveyed by the conveying unit into a connected core (12) having a plurality of cores (14) constituting the segment-type laminated core and a connecting unit (15) that connects the plurality of cores in the longitudinal direction, and a continuous scrap (13) in which the portion of the workpiece excluding the connecting core is continuous. The connecting core has a first connecting core (121) and a second connecting core (122) arranged in the short direction of the workpiece, and the continuous scrap has a continuous shape in the portion between the first connecting core and the second connecting core of the long workpiece, and both the first and second connecting cores have connecting portions provided on the end side in the short direction of the workpiece relative to the multiple cores.

[0012] According to this, since the continuous scrap is made by connecting the parts of the workpiece excluding the connecting core in the longitudinal direction, no shavings are formed between the connecting core and the continuous scrap during shearing, and no shavings are produced. Furthermore, since the connecting core is made by connecting multiple cores in the longitudinal direction with connecting parts, the core does not float up from the die hole like shavings are produced during shearing. Therefore, shavings and other issues that were rate-limiting in shearing speed are eliminated, which represents a technological breakthrough and enables faster processing speeds with shearing machines. As a result, this manufacturing equipment can improve the productivity of segment-type laminated cores used in rotating electric machines.

[0013] Furthermore, claims 12 The invention relating to this invention is a manufacturing method for producing a segment-type laminated core (1) obtained by dividing the laminated core of an armature of a rotating electric machine into predetermined angular ranges around the rotation axis of the rotating electric machine. This manufacturing method includes a step of conveying a strip of steel sheet as a workpiece (11) in the longitudinal direction and shearing the workpiece using punches (41, 211) and dies (42, 221) to form a segment-type laminated core consisting of a plurality of cores (14) and a connecting core (12) having a connecting portion (15) that connects the plurality of cores in the longitudinal direction, and a continuous scrap (13) consisting of the portion of the workpiece excluding the connecting core. The connecting core has a first connecting core (121) and a second connecting core (122) arranged in the short direction of the workpiece, and the continuous scrap has a shape in which the portion between the first connecting core and the second connecting core of the long workpiece is connected, and both the first and second connecting cores have connecting portions provided on the end side in the short direction of the workpiece relative to the multiple cores.

[0014] According to this, the claim 12 The invention relating to this claim, like the invention relating to claim 1, does not cause scrap buildup or the like in the process of shearing the workpiece into a connecting core and continuous scrap, thereby enabling faster processing speeds and improving the productivity of the segment-type laminated core equipped in the rotating electric machine.

[0015] Furthermore, claims 23 The invention relating to this invention concerns a shearing machine for manufacturing cores (14) that constitute a segment-type laminated core (1) from a strip steel sheet as a workpiece (11). The shearing machine has punches (41, 211) and dies (42, 221) that transport the workpiece (11) in the longitudinal direction of the strip steel sheet and shear it into a continuous scrap (13) consisting of a plurality of cores (14) and a connecting part (15) that connects the plurality of cores in the longitudinal direction, and a continuous scrap (13) consisting of the portion of the workpiece excluding the connecting core. The connecting core has a first connecting core (121) and a second connecting core (122) arranged in the short direction of the workpiece, and the continuous scrap has a continuous shape in the portion between the first connecting core and the second connecting core of the long workpiece, and both the first and second connecting cores have connecting portions provided on the end side in the short direction of the workpiece relative to the multiple cores.

[0016] According to this, the claim 23 The invention relating to claim 1, like the invention relating to claim 1, can achieve a higher processing speed for core manufacturing and improve the productivity of cores constituting the segment-type laminated core of a rotating electric machine. 23 With respect to the invention relating to the claim 4~7、11 It is possible to combine the inventions related to this.

[0017] The reference numerals in parentheses attached to each component indicate an example of the correspondence between that component and the specific components described in the embodiments described later. [Brief explanation of the drawing]

[0018] [Figure 1] This figure shows the schematic configuration of the equipment used to perform the first half of the manufacturing process in the manufacturing apparatus according to the first embodiment. [Figure 2] This figure shows a schematic configuration of the equipment used to perform the later stages of the manufacturing process according to the first embodiment. [Figure 3]It is a figure showing a state in which a connecting core and a part to become continuous scrap are arranged with respect to the workpiece. [Figure 4A] It is a figure showing the first connecting core sheared from the workpiece. [Figure 4B] It is a figure showing the continuous scrap sheared from the workpiece. [Figure 4C] It is a figure showing the second connecting core sheared from the workpiece. [Figure 5] It is a figure showing a state of cutting the core from the connecting core. [Figure 6] It is a figure showing a state of cutting the core from the connecting core following FIG. 5. [Figure 7] It is a perspective view of the segment type laminated core. [Figure 8] It is a figure showing a schematic configuration of equipment for performing all processes in the manufacturing apparatus according to the second embodiment. [Figure 9] It is a figure showing a schematic configuration of equipment for performing the first half of the processes in the manufacturing apparatus according to the third embodiment. [Figure 10] (A) is a side view of each roller of the high-speed roller processing machine. (B) is a plan view of the outer peripheral surface of the die roller viewed in the direction of arrow b in (A). (C) is a partially enlarged view of the outer peripheral surface of the die roller. (D) is a cross-sectional view perpendicular to the rotation axis of the die roller taken along line d-d in (C). (E) is a plan view of the outer peripheral surface of the lower roller viewed in the direction of arrow e in (A). (F) is a partially enlarged view of the outer peripheral surface of the lower roller. (G) is a cross-sectional view perpendicular to the rotation axis of the lower roller taken along line g-g in (F). [Figure 11] It is a figure for explaining a state in which the workpiece is sheared to the middle of its plate thickness by the punch roller and the die roller in the high-speed roller processing machine. [Figure 12] It is a figure showing the state of the workpiece that has passed through the punch roller and the die roller in the high-speed roller processing machine. [Figure 13] It is a figure for explaining a state in which the workpiece is completely sheared by the upper roller and the lower roller in the high-speed roller processing machine. [Figure 14]This diagram shows the state of the workpiece after it has passed through the upper and lower rollers in a high-speed roller processing machine. [Figure 15] This is a diagram illustrating a pilot hole formed in a workpiece according to the fourth embodiment. [Figure 16] This is an enlarged view of section XVI in Figure 15. [Figure 17] This is a cross-sectional view of the line XVII-XVII in Figure 16. [Figure 18] This is a diagram illustrating a method for drilling pilot holes in a workpiece. [Figure 19] This diagram, following Figure 18, illustrates the method for drilling pilot holes in a workpiece. [Figure 20] This diagram, following Figure 19, illustrates the method for drilling pilot holes in a workpiece. [Figure 21] This is a diagram illustrating the pilot hole formed in the workpiece according to the fifth embodiment. [Figure 22] This is an enlarged view of section XXII in Figure 21. [Figure 23] Figure 22 shows a cross-sectional view of the line XXIII-XXIII. [Figure 24] This is a diagram illustrating the pilot hole formed in the workpiece according to the sixth embodiment. [Figure 25] This is an enlarged view of section XXV in Figure 24. [Figure 26] Figure 25 shows a cross-sectional view of the line XXVI-XXVI. [Figure 27] This is a cross-sectional view corresponding to the location shown in Figure 26 in the seventh embodiment. [Figure 28] This figure shows the arrangement of pilot hole continuous scrap, connecting core, and continuous scrap portions on the workpiece in the eighth embodiment. [Figure 29A] This figure shows the continuous scrap of the first pilot hole, which has been sheared from the workpiece. [Figure 29B] This figure shows the first connecting core that has been sheared from the workpiece. [Figure 29C]This figure shows continuous scrap that has been sheared from the workpiece. [Figure 29D] This figure shows the second connecting core that has been sheared from the workpiece. [Figure 29E] This figure shows the continuous scrap from the second pilot hole, which has been sheared from the workpiece. [Figure 30] This figure shows the arrangement of the connecting core and the continuous scrap portion on the workpiece in the ninth embodiment. [Figure 31A] This figure shows the first connecting core that has been sheared from the workpiece. [Figure 31B] This figure shows continuous scrap that has been sheared from the workpiece. [Figure 31C] This figure shows the second connecting core that has been sheared from the workpiece. [Figure 32] This diagram shows the process of cutting the core from the first connected core. [Figure 33] This figure shows how two rows of comb-shaped core sheet portions are arranged on the workpiece in Patent Document 1. [Figure 34] This figure shows how a comb-shaped core sheet is wound spirally to form a rotor core, as described in Patent Document 1. [Modes for carrying out the invention]

[0019] Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are denoted by the same reference numerals, and their descriptions are omitted.

[0020] (First Embodiment) The first embodiment will be described with reference to the drawings. The manufacturing apparatus of this embodiment manufactures a segmented laminated core 1 (see, for example, Figure 7) which is obtained by dividing the laminated core of the armature (specifically, a segmented stator core) of a rotating electric machine into predetermined angular ranges around the rotation axis of the rotating electric machine.

[0021] As shown in Figure 1, the manufacturing apparatus includes an uncoiler 2, a loop controller 3, a high-speed press machine 4, a linked core winding device 5, a continuous scrap winding device 6, and the like. Furthermore, as shown in Figure 2, the manufacturing apparatus also includes a linked core mounting stand 7, a coating device 8, a cutting and pressing device 9, a linked section scrap winding device 10, and the like. The uncoiler 2, linked core winding device 5, and continuous scrap winding device 6 in this embodiment correspond to an example of the "conveying unit" described in the claims. In addition, the high-speed press machine 4 in this embodiment corresponds to an example of the "shearing machine" described in the claims.

[0022] As shown in Figure 1, a strip of steel sheet is used as the workpiece 11 for manufacturing the segmented laminated core 1. The strip of steel sheet used as the workpiece 11 is thin, intended to increase the output torque of the motor used as a rotating electric machine.

[0023] The uncoiler 2 is a device that supports a strip of steel sheet, which is a workpiece 11 wound into a coil, with a core rod 2a, and unwinds the workpiece 11 from the outer circumference of the coil. The workpiece 11 unwound by the uncoiler 2 is conveyed in its longitudinal direction. The workpiece 11 is then conveyed from the uncoiler 2 to the loop controller 3 and then to the high-speed press machine 4.

[0024] The loop controller 3 is a device that adjusts the slack of the workpiece 11 supplied from the uncoiler 2, suppressing material fluttering and bending, and enabling high-speed feeding. The loop controller 3 is preferably used when using a vertical uncoiler (i.e., in which the core of the uncoiler 2 is positioned horizontally).

[0025] As the high-speed press machine 4, for example, a 100kN to 450kN high-speed press machine is used. Alternatively, a high-speed press machine 4 with a limit speed of approximately 1000 SPM to 2000 SPM may be used. The workpiece 11 is transported to the high-speed press machine 4 from the uncoiler 2 via the loop controller 3. The high-speed press machine 4 has a punch 41 that reciprocates perpendicular to the surface of the workpiece 11, and a die 42 positioned opposite the punch 41, sandwiching the workpiece 11. The high-speed press machine 4 performs a shearing process on the workpiece 11 by repeatedly feeding, stopping, punching (i.e., shearing), and feeding again, thereby shearing the workpiece 11 into a connected core 12 and continuous scrap 13, as shown in Figures 3 and 4A to 4C. The shearing process performed by the high-speed press machine 4 corresponds to an example of the "shearing process" described in the claims.

[0026] Figure 3 shows the arrangement of the connecting core 12 and continuous scrap 13 portions on the workpiece 11. It can also be said that Figure 3 is a view of a portion of the punch 41 or die 42 of the high-speed press machine 4, as seen from the direction in which the punch 41 reciprocates. In other words, the punch 41 and die 42 of the high-speed press machine 4 are provided with irregularities as shown in Figure 3 for shearing the workpiece 11 into the connecting core 12 and continuous scrap 13.

[0027] As shown in Figures 3, 4A, and 4C, the connecting core 12 has a plurality of cores 14 that constitute the segment-type laminated core 1, and a connecting portion 15 that connects the plurality of cores 14 in the longitudinal direction of the workpiece 11. By connecting the plurality of cores 14 in the longitudinal direction of the workpiece 11 with the connecting portion 15 in this way, the cores 14 do not float up from the holes of the die 42 like burrs when the high-speed press machine 4 performs shearing. A pilot hole 16 is provided in the connecting portion 15. This pilot hole 16 will be described in the fourth to eighth embodiments described later.

[0028] The connecting core 12 has a first connecting core 121 and a second connecting core 122. The first connecting core 121 and the second connecting core 122 are aligned in the short direction of the workpiece 11, and each is continuous in the long direction of the workpiece 11. The multiple cores 14 of the first connecting core 121 and the second connecting core 122 have a yoke forming portion 141 that forms part of the armature yoke, and a tooth forming portion 142 that is connected to the yoke forming portion 141 and forms part of the teeth. As shown in Figure 3, in the state of the workpiece 11, the tooth forming portion 142 of the second connecting core 122 is positioned between multiple adjacent tooth forming portions 142 of the first connecting core 121. Also, the tooth forming portion 142 of the first connecting core 121 is positioned between multiple adjacent tooth forming portions 142 of the second connecting core 122. By arranging the first connecting core 121 and the second connecting core 122 in this way, the area of ​​the continuous scrap 13 can be reduced, thereby reducing material waste.

[0029] On the other hand, as shown in Figures 3 and 4B, the continuous scrap 13 has a shape in which all parts of the workpiece 11, excluding the connecting core 12, are continuous. Specifically, the boundary line between the first connecting core 121 and the continuous scrap 13 (hereinafter referred to as the "first boundary line 17") extends like a single stroke without any predetermined parts touching other parts along the first boundary line 17. Similarly, the boundary line between the second connecting core 122 and the continuous scrap 13 (hereinafter referred to as the "second boundary line 18") also extends like a single stroke without any predetermined parts touching other parts along the second boundary line 18. Furthermore, the first boundary line 17 and the second boundary line 18 extend with a gap between them without touching each other in their entire regions. Therefore, the entire region between the first boundary line 17 and the second boundary line 18 becomes the continuous scrap 13. As a result, the continuous scrap 13 is recovered by the continuous scrap winding device 6 in a continuous state. Therefore, during shearing, no shavings are formed between the connected core 12 and the continuous scrap 13, and no shavings are lifted up. Also, as described above, since the connected core 12 consists of multiple cores 14 connected by a connecting part 15, the cores 14 do not lift up from the hole in the die 42 during shearing, as would occur with shavings lifted up. Therefore, shavings lifted up, which were the rate limiting factor in high-speed shearing, do not occur, which is a technological breakthrough and enables high-speed processing up to the limit speed of processing by the high-speed press machine 4 (for example, 1000 to 2000 SPM).

[0030] As shown again in Figure 1, the continuous scrap winding device 6 is a device that winds up the continuous scrap 13 fed from the high-speed press machine 4 into a coil while keeping it all connected. On the other hand, the linked core winding device 5 has a first linked core winding device 51 and a second linked core winding device 52. The first linked core winding device 51 is a device that winds up the first linked core 121 fed from the high-speed press machine 4 into a coil while keeping it all connected. The second linked core winding device 52 is a device that winds up the second linked core 122 fed from the high-speed press machine 4 into a coil while keeping it all connected. Note that a loop controller (not shown) may be installed between the continuous scrap winding device 6 and the linked core winding device 5 and the high-speed press machine 4. The linked cores 12 (i.e., the first linked core 121 and the second linked core 122) wound by the linked core winding device 5 are installed on the linked core mounting base 7 shown in Figure 2.

[0031] Next, as shown in Figure 2, the coiled connecting core 12 is placed on the connecting core installation stand 7. The connecting core installation stand 7 is a horizontal uncoiler (i.e., the uncoiler's core is positioned vertically), and it supports the coiled connecting core 12 with its core, unwinding the connecting core 12 from the outer circumference of the coil. The connecting core 12 unwound by the connecting core installation stand 7 is then transported to the coating device 8 and the cutting and pressing device 9 in that order.

[0032] The coating device 8 is a device for applying adhesive to the surfaces of the multiple cores 14 of the connected core 12. As the coating device 8, well-known printing technologies (e.g., flexographic printing, offset printing, letterpress printing, letterpress direct printing with workpiece movement, letterpress offset printing with workpiece movement) can be employed. By using printing technology, the adhesive can be applied precisely to only the surfaces of the multiple cores 14 of the connected core 12. The process performed by the coating device 8 corresponds to an example of the "coating process" described in the claims.

[0033] The cutting and pressing device 9 has a cutting unit (not shown) that cuts the connecting core 12 into a plurality of cores 14 and a connecting portion 15, and a pressing unit (not shown) that stacks the plurality of cores 14 cut by the cutting unit in the thickness direction and presses them together. As shown in Figures 5 and 6, the cutting unit uses a pilot hole 16 provided in the connecting core 12 for positioning to cut the cores 14 from the connecting core 12. In Figures 5 and 6, the position where the connecting core 12 is cut into cores 14 and a connecting portion 15 is indicated by a dashed line C. The cutting unit can improve the processing speed by performing a "multiple cut" that cuts multiple cores 14 from the connecting core 12 at once. The process performed by the cutting unit corresponds to an example of the "cutting process" described in the claims.

[0034] As shown in Figure 7, the pressing section forms a segmented laminated core 1 by stacking and pressing multiple cores 14 cut by the cutting section in the thickness direction. When the cutting section makes multiple cuts, the pressing section can also form multiple segmented laminated cores 1 at once, thereby improving the processing speed. The process performed by the pressing section corresponds to an example of the "pressing process" described in the claims.

[0035] In a later process, multiple segment-type laminated cores 1 are combined so as to be aligned in the circumferential direction to form a laminated core (specifically, a segment-type stator core) of an armature that constitutes a rotating electric machine.

[0036] As shown in Figure 2, the connecting portion 15, from which multiple cores 14 have been cut from the connecting core 12, is wound up and recovered by the connecting portion scrap winding device 10.

[0037] The manufacturing apparatus of the first embodiment described above provides the following effects. (1) In this embodiment, the high-speed press machine 4, as an example of a shearing machine, shears the workpiece 11 into a connected core 12 having a plurality of cores 14 and connecting parts 15, and continuous scrap 13 in which all parts of the workpiece 11 excluding the connected core 12 are made continuous.

[0038] According to this, no shavings are formed between the connected core 12 and the continuous scrap 13 during shearing by the high-speed press machine 4, and no shavings are lifted up during shearing. Furthermore, since the connected core 12 is made up of multiple cores 14 connected in the longitudinal direction by connecting parts 15, the cores 14 do not lift up from the holes of the die 42 during shearing, as would occur with shavings lifted up. Therefore, shavings lifted up, which were the rate-limiting factor in high-speed shearing by the high-speed press machine 4, are eliminated, resulting in a technological breakthrough and enabling higher processing speeds. As a result, this manufacturing apparatus can improve the productivity of the segment-type laminated core 1 used in rotating electric machines.

[0039] (2) In this embodiment, the continuous scrap 13 has a continuous shape in all parts of the long workpiece 11 between the first connecting core 121 and the second connecting core 122. According to this, no shavings are formed between the first connected core 121 and the continuous scrap 13, nor are any shavings formed between the second connected core 122 and the continuous scrap 13. Therefore, since shavings, which were the rate-limiting factor in the shearing process by the high-speed press machine 4, do not occur, the processing speed can be increased.

[0040] (3) In this embodiment, in the state of the workpiece 11, the tooth-forming portions 142 of the second connecting core 122 are arranged between a plurality of adjacent tooth-forming portions 142 of the first connecting core 121, and the tooth-forming portions 142 of the first connecting core 121 are arranged between a plurality of adjacent tooth-forming portions 142 of the second connecting core 122. By arranging the first connecting core 121 and the second connecting core 122 in this manner, the area of ​​the continuous scrap 13 can be reduced, thereby reducing material waste.

[0041] (4) In this embodiment, the shearing of the workpiece 11 is performed by a high-speed press machine 4 having a punch 41 that moves back and forth perpendicular to the workpiece 11 and a die 42 positioned opposite the punch 41 with the workpiece 11 in between. According to this, since sludge buildup, which was the rate-limiting factor in increasing the speed of the high-speed press machine 4, does not occur, it is possible to increase the processing speed up to the limit of processing speed (for example, 1000 to 2000 SPM) using the high-speed press machine 4.

[0042] (5) In this embodiment, the manufacturing apparatus winds up the connected core 12, which has been sheared by the high-speed press machine 4, using the connected core winding device 5. The manufacturing apparatus also winds up the continuous scrap 13, which has been sheared by the high-speed press machine 4, using the continuous scrap winding device 6. According to this, the manufacturing apparatus includes a linked core winding device 5 and a continuous scrap winding device 6, allowing subsequent processing steps for the linked core 12 to be carried out in a location separate from the high-speed press machine 4.

[0043] (6) In this embodiment, the manufacturing apparatus includes a coating device 8 for applying adhesive to the surfaces of the multiple cores 14 of the connecting core 12. The coating device 8 can apply adhesive only to the surfaces of the multiple cores 14 of the connecting core 12 by means of, for example, flexographic printing, offset printing, or letterpress printing.

[0044] (7) In this embodiment, the manufacturing apparatus includes a cutting unit that cuts the connecting core 12 into a plurality of cores 14 and a connecting portion 15, and a pressing unit that stacks the plurality of cores 14 cut by the cutting unit in the thickness direction and presses them together. According to this, a segmented laminated core 1 can be formed by stacking multiple cores 14 cut from the connected core 12. Furthermore, the cutting and pressing parts of the cutting and pressing device 9 can be made faster by performing so-called multi-core cutting, which involves simultaneously cutting, stacking, and pressing multiple cores 14 from the connected core 12.

[0045] Furthermore, the first embodiment described above can also be considered as a manufacturing method for producing a segment-type laminated core 1. The manufacturing method and its effects are as follows. (8) The manufacturing method of this embodiment includes the step of shearing the workpiece 11 into a connected core 12 having a plurality of cores 14 and connecting portions 15, and a continuous scrap 13 in which all parts of the workpiece 11 excluding the connected core 12 are made continuous. According to this manufacturing method, since scrap buildup and other issues that were rate-limiting in the process of shearing the workpiece 11 into a connecting core 12 and continuous scrap 13 do not occur, the processing speed can be increased and the productivity of the segment-type laminated core 1 equipped in the rotating electric machine can be improved. It is also possible to combine this manufacturing method with the manufacturing method described in the first embodiment and the manufacturing methods described in the second to ninth embodiments described later.

[0046] (Second Embodiment) Next, we will describe the second embodiment. The second embodiment is a modification of the first embodiment in terms of the configuration of the manufacturing apparatus, and is otherwise the same as the first embodiment. Therefore, we will only describe the parts that differ from the first embodiment.

[0047] As shown in Figure 8, the manufacturing apparatus of the second embodiment includes an uncoiler 2, a loop controller 3, a high-speed press machine 4, a coating device 8, a cutting and pressing device 9, a continuous scrap winding device 6, and the like. In other words, the manufacturing apparatus of the second embodiment has a layout in which the components from the uncoiler 2 to the continuous scrap winding device 6 are directly connected. Therefore, the manufacturing apparatus of the second embodiment does not include the connecting core winding device 5 and connecting core mounting stand 7 described in the first embodiment. Consequently, the connecting core 12 that has been sheared by the high-speed press machine 4 is transported directly to the coating device 8 and the cutting and pressing device 9 in that order and processed into a segment-type laminated core 1. The continuous scrap winding device 6 winds and recovers both the continuous scrap 13 and the connecting portion 15. Although not shown in the figure, a connecting portion scrap winding device 10 for winding and recovering the connecting portion 15 may be installed separately from the continuous scrap winding device 6.

[0048] The manufacturing apparatus of the second embodiment described above can also achieve the same effects and advantages as that of the first embodiment. The layouts of the first and second embodiments can be selected according to the production quantity.

[0049] (Third embodiment) Next, we will describe the third embodiment. The third embodiment is similar to the first embodiment in that some parts of the manufacturing apparatus configuration have been changed, and other aspects are the same as the first embodiment, so only the parts that differ from the first embodiment will be described.

[0050] As shown in Figure 9, the manufacturing apparatus of the third embodiment is equipped with a high-speed roller processing machine 20 instead of the high-speed press processing machine 4 described in the first embodiment. The high-speed roller processing machine 20 of this embodiment also corresponds to an example of a "shearing machine" as described in the claims. Furthermore, the shearing process performed by the high-speed roller processing machine 20 corresponds to an example of a "shearing process" as described in the claims.

[0051] As the high-speed roller processing machine 20, a machine with a maximum speed of, for example, 2000 to 10000 SPM is used. The high-speed roller processing machine 20 has a punch roller 21 and a die roller 22 provided on the upstream side in the conveying direction of the workpiece 11, and an upper roller 23 and a lower roller 24 provided on the downstream side in the conveying direction of the workpiece 11 relative to the punch roller 21 and die roller 22. Unlike the "intermittent feeding" performed by the high-speed press processing machine 4, the high-speed roller processing machine 20 can dramatically improve the processing speed by "continuous feeding" due to the rotation of the rollers.

[0052] As shown in Figure 10(A), the punch roller 21 is positioned on one side of the workpiece 11 in the thickness direction. The die roller 22 is positioned on the other side of the workpiece 11 in the thickness direction, opposite the punch roller 21, with the workpiece 11 in between. The upper roller 23 is positioned downstream of the punch roller 21 in the conveying direction of the workpiece 11, and on one side of the workpiece 11 in the thickness direction. The lower roller 24 is positioned downstream of the die roller 22 in the conveying direction of the workpiece 11, on the other side of the workpiece 11 in the thickness direction, and opposite the upper roller 23 with the workpiece 11 in between. The punch roller 21, die roller 22, upper roller 23, and lower roller 24 are configured to rotate around their respective axes of rotation 21a, 22a, 23a, and 24a, respectively.

[0053] As shown in Figures 10(C) and 10(D), the outer surface of the die roller 22 is provided with irregularities (i.e., die 221) for shearing the workpiece 11 into a connecting core 12 and continuous scrap 13. Although not shown in the figures, the outer surface of the punch roller 21 is also provided with irregularities (i.e., punch 211) corresponding to the irregularities on the outer surface of the die roller 22.

[0054] On the other hand, as shown in Figures 10(F) and 10(G), the outer surface of the lower roller 24 is a flat curved surface. Although not shown in the illustration, the outer surface of the upper roller 23 is also a flat curved surface.

[0055] Next, a method for shearing the workpiece 11 into a connecting core 12 and continuous scrap 13 using a high-speed roller processing machine 20 will be explained with reference to Figures 11 to 14. Note that in Figures 11 to 14, the shapes of the punch 211, die 221, connecting core 12, and continuous scrap 13 are simplified.

[0056] Figure 11 shows how the punch roller 21 and die roller 22 shear the workpiece 11 up to a certain point in its thickness. As shown in Figure 11, when the punch 211 on the punch roller 21 comes into contact with the workpiece 11 moving in the conveying direction (i.e., when it passes the bottom dead center), the rotation of the punch roller 21 causes the punch 211 to change angle with respect to the surface of the workpiece 11 and move up and down. In Figure 11, the dashed line 211a, solid line 211b, and dashed line 211c show how the punch 211 of the punch roller 21 changes angle with respect to the workpiece 11 moving in the conveying direction when it passes the bottom dead center. In this way, the punch 211 of the punch roller 21 also changes angle with respect to the hole in the die 221 of the die roller 22 and moves up and down. Therefore, if the punch 211 were to be inserted into the hole in the die 221, there would be a risk of contact between the punch 211 and the inner wall of the hole in the die 221. Therefore, in this embodiment, the punch roller 21 and die roller 22 are configured to shear the workpiece 11 from one side in the thickness direction of the workpiece 11 to the other side, up to a certain point in the thickness of the workpiece 11, into a connecting core 12 and continuous scrap 13. Consequently, the punch 211 of the punch roller 21 is not inserted into the hole of the die 221 of the die roller 22, so the punch 211 of the punch roller 21 and the inner wall of the hole of the die 221 of the die roller 22 do not come into contact.

[0057] Figure 12 shows the state of the workpiece 11 after passing through the punch roller 21 and the die roller 22. As shown in Figure 12, the workpiece 11 that has passed through the punch roller 21 and the die roller 22 has a portion of the workpiece 11 that has been pressed by the punch 211 of the punch roller 21 protruding towards the die roller 22 up to a certain point in its thickness. In other words, the workpiece 11 is sheared into the connecting core 12 and the continuous scrap 13 up to a certain point in its thickness.

[0058] Next, Figure 13 shows how the upper roller 23 and lower roller 24 completely shear the workpiece 11. As shown in Figure 13, when the upper roller 23 and lower roller 24 come into contact with the workpiece 11 moving in the conveying direction, they are configured to push back the portion of the workpiece 11 that has been pressed by the punch 211 of the punch roller 21 from one side to the other side in the thickness direction of the workpiece 11. As a result, the workpiece 11 is completely sheared into the connecting core 12 and continuous scrap 13 along its entire thickness.

[0059] Figure 14 shows the state of the workpiece 11 after passing through the upper roller 23 and the lower roller 24. As shown in Figure 14, the workpiece 11 that has passed through the upper roller 23 and the lower roller 24 is completely sheared into the connecting core 12 and the continuous scrap 13.

[0060] The manufacturing apparatus of the third embodiment described above provides the following effects. (1) In the third embodiment, the shearing of the workpiece 11 is performed by a high-speed roller processing machine 20 equipped with a punch roller 21 having a punch 211 on the outer surface of the roller and a die roller 22 having a die 221 on the outer surface of the roller. According to this, since no waste material is formed between the connected core 12 and the continuous scrap 13, it is possible to use the high-speed roller processing machine 20. The high-speed press processing machine 4 described in the first embodiment, etc., performs processing by intermittent feeding, so its limiting speed is, for example, around 1000 to 2000 SPM. In contrast, the high-speed roller processing machine 20 described in the third embodiment breaks through the limiting speed of the high-speed press processing machine 4. That is, since the high-speed roller processing machine 20 performs continuous feeding of the workpiece 11 instead of intermittent feeding of the workpiece 11, it is possible to dramatically improve the limiting processing speed. Specifically, with the high-speed roller processing machine 20, it is possible to achieve processing speeds of, for example, 2000 to 10000 SPM or more.

[0061] (2) In the third embodiment, the punch roller 21 and die roller 22 of the high-speed roller processing machine 20 are configured to shear the workpiece 11 into a connecting core 12 and continuous scrap 13 from one side in the thickness direction of the workpiece 11 to the other side up to a certain point in the thickness of the workpiece 11. The upper roller 23 and lower roller 24 are configured to push back the workpiece 11 from the other side in the thickness direction of the workpiece 11 to the one side, completely shearing the workpiece 11 into a connecting core 12 and continuous scrap 13. As a result, the high-speed roller processing machine 20 is configured such that the punch 211 of the punch roller 21 is not inserted into the hole of the die 221 of the die roller 22. Therefore, the high-speed roller processing machine 20 can shear the connecting core 12 and the continuous scrap 13 at high speed and reliably while suppressing wear on the cutting edges of the punch 211 and die 221.

[0062] (Embodiments 4-8) In the fourth to eighth embodiments, the pilot holes 16 provided in the connecting core 12 will be described.

[0063] (Fourth Embodiment) As shown in Figure 15, the pilot hole 16 is provided in the connecting portion 15 of the connecting core 12. The pilot hole 16 is used to position the connecting core 12 when the connecting core 12 is cut into multiple cores 14 and the connecting portion 15 at the cutting section of the cutting and pressing device 9. At the cutting section of the cutting and pressing device 9, the cutting of the connecting portion 15 and the core 14 is performed with the position of the pilot hole 16 as a reference.

[0064] The pilot hole 16 can be made using the high-speed press machine 4 described in the first embodiment or the high-speed roller processing machine 20 described in the third embodiment. Therefore, the pilot hole 16 is made simultaneously with the shearing process that separates the workpiece 11 into a connecting core 12 and continuous scrap 13. The processing of the pilot hole 16 using the high-speed press machine 4 or the high-speed roller processing machine 20 corresponds to an example of the "pilot hole processing step" described in the claims.

[0065] As shown in Figures 16 and 17, in the fourth embodiment, the high-speed press machine 4 or the high-speed roller machine 20 processes the pilot hole 16 with the entire circumference of the edge 161 of the pilot hole 16 connected to the connecting part 15. However, the high-speed press machine 4 or the high-speed roller machine 20 may process the pilot hole 16 with at least a part of the edge 161 of the pilot hole 16 connected to the connecting part 15. Processing in this way prevents the generation of debris when shearing the pilot hole 16, and increases the processing speed.

[0066] Next, an example of a method for processing the pilot hole 16 using a high-speed press machine 4 or a high-speed roller machine 20 will be explained with reference to Figures 18 to 20.

[0067] As shown in Figures 18 to 20, a punch 25 with a pointed tip is used to machine the pilot hole 16. The punch 25 moves back and forth in the thickness direction of the workpiece 11. By piercing the workpiece 11 with the punch 25, it is possible to machine the pilot hole 16 with at least a portion of the edge 161 of the pilot hole 16 connected to the connecting portion 15. Therefore, when machining the pilot hole 16 in the workpiece 11 using the high-speed press machine 4 or the high-speed roller machine 20, no shavings are formed and no shavings are produced. As a result, the processing speed can be increased in the high-speed press machine 4 and the high-speed roller machine 20.

[0068] (Fifth embodiment) As shown in Figures 21 to 23, in the fifth embodiment, the pilot hole 16 is machined such that a portion of its edge 161 in the circumferential direction is connected to the connecting portion 15. That is, as shown in Figure 23, the portion 162 of the workpiece 11 corresponding to the pilot hole 16 is bent in the thickness direction of the workpiece 11 such that a portion of it is connected to the edge 161 of the pilot hole 16. Even when the pilot hole 16 is formed in this way, no waste is formed when the pilot hole 16 is machined into the workpiece 11 using the high-speed press machine 4 and the high-speed roller machine 20, and no waste is generated. Therefore, the high-speed press machine 4 and the high-speed roller machine 20 can achieve a high processing speed.

[0069] (Sixth Embodiment) As shown in Figures 24 to 26, in the sixth embodiment, the pilot hole 16 has a shape in which part or all of the circumferential edge 161 is connected to the connecting part 15 and has a bottom 163. That is, the part of the workpiece 11 corresponding to the pilot hole 16 is connected to the edge 161 of the pilot hole 16, and is pressed in the thickness direction of the workpiece 11 to form a recessed bottom 163. Even when the pilot hole 16 is formed in this way, no shavings are formed when the pilot hole 16 is processed in the workpiece 11 using the high-speed press machine 4 and the high-speed roller machine 20, and no shavings are produced. Therefore, the processing speed can be increased in the high-speed press machine 4 and the high-speed roller machine 20.

[0070] (Seventh Embodiment) The seventh embodiment is a modification of the sixth embodiment. As shown in Figure 27, in the seventh embodiment, the pilot hole 16 is processed in a shape in which two points on the edge 161 are connected to the connecting part 15. That is, the parts 164 and 165 of the workpiece 11 corresponding to the pilot hole 16 are bent in the thickness direction of the workpiece 11 while connected at the edge 161 of the pilot hole 16. Even when the pilot hole 16 is formed in this way, no waste is formed when the pilot hole 16 is processed in the workpiece 11 using the high-speed press machine 4 and the high-speed roller processing machine 20, and no waste is generated. Therefore, the processing speed can be increased in the high-speed press machine 4 and the high-speed roller processing machine 20.

[0071] (Eighth embodiment) The eighth embodiment will be described with reference to Figures 28 and 29A to 29E. Figure 28 shows the arrangement of the parts that will become the first pilot hole continuous scrap 31, the first connecting core 121, the continuous scrap 13, the second connecting core 122, and the second pilot hole continuous scrap 32 on the workpiece 11. Figures 29A to 29E show the first pilot hole continuous scrap 31, the first connecting core 121, the continuous scrap 13, the second connecting core 122, and the second pilot hole continuous scrap 32, respectively, which have been sheared from the workpiece 11.

[0072] As shown in Figures 28, 29B, and 29D, in the eighth embodiment, the pilot hole 16 is formed in a semicircular shape, with a portion of the hole open to the outside of the connecting portion 15. On the other hand, as shown in Figures 28, 29A, and 29E, the portion 166 of the workpiece 11 corresponding to the pilot hole 16 is connected to the first continuous pilot hole scrap 31 or the second continuous pilot hole scrap 32. Therefore, even if the pilot hole 16 is formed in this way, no scrap is formed when the pilot hole 16 is processed in the workpiece 11 by the high-speed press machine 4 and the high-speed roller machine 20, and no scrap is generated. As a result, the processing speed can be increased in the high-speed press machine 4 and the high-speed roller machine 20.

[0073] (Ninth Embodiment) The ninth embodiment will be described with reference to Figures 30, 31A to 31C, and 32. The ninth embodiment is a modification of the shape of the core 14 compared to the first to eighth embodiments described above.

[0074] In the first to eighth embodiments described above, the core 14 had an arc-shaped outer circumference of the yoke forming portion 141, which forms part of the armature yoke. In contrast, as shown in Figures 30, 31A, and 31C, in the ninth embodiment, the core 14 has a straight outer circumference of the yoke forming portion 141. Therefore, in the ninth embodiment, the connection points between the multiple cores 14 and the connecting portion 15 in the connecting core 12 are longer than those described in the first to eighth embodiments.

[0075] As shown in Figure 32, the cutting and pressing device 9 cuts the core 14 from the connecting core 12. Figure 32 shows how, for example, four cores 14 are extracted from the connecting core 12.

[0076] The shape of the core 14 shown in the ninth embodiment described above can also achieve the same effects and advantages as those of the first to eighth embodiments described above.

[0077] (Other embodiments) The present invention is not limited to the embodiments described above, and can be modified as appropriate within the scope of the claims. Furthermore, the embodiments described above are not unrelated to each other, and can be combined as appropriate, except in cases where the combination is clearly impossible. In addition, it goes without saying that the elements constituting the embodiments are not necessarily essential, except in cases where they are explicitly stated to be particularly essential or where they are clearly considered essential in principle. Furthermore, in the embodiments described above, when numerical values ​​such as the number, numerical values, quantities, or ranges of the components of the embodiments are mentioned, the invention is not limited to those specific numbers, except in cases where they are explicitly stated to be particularly essential or where they are clearly limited to a specific number in principle. Furthermore, when the shapes, positional relationships, etc., of the components, etc., are mentioned in the embodiments described above, the invention is not limited to those shapes, positional relationships, etc., except in cases where they are explicitly stated to be particularly essential or where they are clearly limited to a specific shape, positional relationship, etc., in principle.

[0078] For example, the second and third embodiments may be combined to create a layout in which the configuration from the uncoiler 2 to the continuous scrap winding device 6 is directly connected.

[0079] Furthermore, although the above embodiments described the pilot hole 16 as being opened by a high-speed press machine 4 or a high-speed roller processing machine 20, the pilot hole 16 may be opened by a different device and process than the high-speed press machine 4 and the high-speed roller processing machine 20. [Explanation of Symbols]

[0080] 2. Ancoira (conveyor section) 4. High-speed press working machine (shearing machine) 5. Linked core winding device (conveying section) 6. Continuous scrap winding device (conveying section) 11 Work material 12 linked cores 13 consecutive scraps 14 cores 15 Connecting part 20. High-speed roller processing machine (shearing machine)

Claims

1. In a manufacturing apparatus for producing a segment-type laminated core (1) obtained by dividing the laminated core of the armature of a rotating electric machine into predetermined angular ranges around the rotation axis of the rotating electric machine, A conveying section (2, 5, 6) that conveys the steel strip sheet as the workpiece (11) in the longitudinal direction, The shearing machine (4, 20) has punches (41, 211) and dies (42, 221) that shear the workpiece conveyed by the conveying unit into a connecting core (12) having a plurality of cores (14) constituting the segment-type laminated core and a connecting portion (15) that connects the plurality of cores in the longitudinal direction, and a continuous scrap (13) formed by continuously forming the portion of the workpiece excluding the connecting core. The connecting core has a first connecting core (121) and a second connecting core (122) arranged in the short direction of the workpiece. The continuous scrap is a long piece of workpiece in which the portion between the first connecting core and the second connecting core is continuous. A manufacturing apparatus in which both the first connecting core and the second connecting core have their connecting portions provided on the end side in the short direction of the workpiece relative to a plurality of cores.

2. The surfaces of the connecting portion of the first connecting core that are opposite to the core are linear in the longitudinal direction of the workpiece, The manufacturing apparatus according to claim 1, wherein the surfaces of the connecting portion of the second connecting core that are opposite to the plurality of cores are linear in the longitudinal direction of the workpiece.

3. The shearing machine shears from the workpiece, in addition to the first connecting core, the second connecting core, and the continuous scrap, a first pilot hole continuous scrap which is formed on the short-side end of the workpiece relative to the connecting portion of the first connecting core and is connected to a portion (166) in which a pilot hole is formed in the connecting portion of the first connecting core, and a second pilot hole continuous scrap which is formed on the short-side end of the workpiece relative to the connecting portion of the second connecting core and is connected to a portion in which a pilot hole is formed in the connecting portion of the second connecting core. The side of the first pilot hole continuous scrap opposite to the connecting portion of the first connecting core is linear in the longitudinal direction of the workpiece. The manufacturing apparatus according to claim 1, wherein the side of the second pilot hole continuous scrap opposite to the connecting portion of the second connecting core is linear in the longitudinal direction of the workpiece.

4. The plurality of cores in the first connecting core and the second connecting core each have a yoke forming portion (141) that forms a part of the armature yoke and a tooth forming portion (142) that is connected to the yoke forming portion and forms a part of the teeth, A manufacturing apparatus according to any one of claims 1 to 3, wherein, in the state of the workpiece, the teeth forming portion of the second connecting core is arranged between a plurality of adjacent teeth forming portions of the first connecting core, and the teeth forming portion of the first connecting core is arranged between a plurality of adjacent teeth forming portions of the second connecting core.

5. The manufacturing apparatus according to any one of claims 1 to 4, wherein the shearing machine is a high-speed press machine (4) comprising a punch (41) that reciprocates perpendicular to the workpiece and a die (42) positioned opposite the punch with respect to the workpiece.

6. The manufacturing apparatus according to any one of claims 1 to 4, wherein the shearing machine is a high-speed roller processing machine (20) comprising a punch roller (21) having the punch (211) on the outer circumferential surface of the roller and positioned on one side in the thickness direction of the workpiece, and a die roller (22) having the die (221) on the outer circumferential surface of the roller and positioned on the other side in the thickness direction of the workpiece, opposite to the punch roller, sandwiching the workpiece.

7. The high-speed roller processing machine further comprises an upper roller (23) and a lower roller (24) positioned downstream of the punch roller and the die roller in the direction of conveying the workpiece, The upper roller has a flat curved surface on its outer circumferential surface and is positioned on one side in the thickness direction of the workpiece. The lower roller has a flat curved surface on its outer circumferential surface and is positioned on the other side of the workpiece in the thickness direction, facing the upper roller with the workpiece in between. The punch roller and the die roller are configured to shear the workpiece into the connecting core and the continuous scrap from one side in the thickness direction of the workpiece to the other side, up to a point in the thickness of the workpiece. The manufacturing apparatus according to claim 6, wherein the upper roller and the lower roller are configured to push back from one side to the other side in the thickness direction of the workpiece, thereby completely shearing the workpiece into the connecting core and the continuous scrap.

8. A connecting core winding device (5) that winds up the connecting core that has been sheared from the workpiece by the shearing machine, The manufacturing apparatus according to any one of claims 1 to 7, further comprising a continuous scrap winding device (6) for winding up the continuous scrap sheared from the workpiece by the shearing machine.

9. The shearing machine is further provided with a coating device (8) located downstream in the direction of conveying the workpiece, which applies adhesive to the surfaces of the multiple cores of the connecting core, The manufacturing apparatus according to any one of claims 1 to 8, wherein the coating apparatus applies adhesive only to the surfaces of the plurality of cores of the connecting core by flexographic printing, offset printing, or letterpress printing.

10. The manufacturing apparatus according to claim 9, further comprising a cutting and pressing device (9) provided downstream of the coating device in the direction of conveying the workpiece, the cutting device having a cutting unit for cutting the connecting core into a plurality of cores and the connecting portion, and a pressing unit for stacking and pressing the plurality of cores cut by the cutting unit in the thickness direction.

11. The manufacturing apparatus according to claim 10, wherein the shearing machine is capable of processing pilot holes (16) used for positioning when the cutting and pressing device cuts the connecting core into a plurality of cores and the connecting portion, on the portion of the connecting core that will become the connecting portion.

12. In a manufacturing method for producing a segmented laminated core (1) obtained by dividing the laminated core of the armature of a rotating electric machine into predetermined angular ranges around the rotation axis of the rotating electric machine, The process includes a shearing step in which, while conveying a strip of steel sheet as a workpiece (11) in the longitudinal direction, the workpiece is sheared by punches (41, 211) and dies (42, 221) into a connected core (12) having a plurality of cores (14) constituting the segment-type laminated core and a connecting portion (15) that connects the plurality of cores in the longitudinal direction, and a continuous scrap (13) consisting of the portion of the workpiece excluding the connected core. The connecting core has a first connecting core (121) and a second connecting core (122) arranged in the short direction of the workpiece. The continuous scrap has a shape in which the portion between the first connecting core and the second connecting core of the long workpiece is connected. A manufacturing method wherein the first connecting core and the second connecting core are both provided with the connecting portion on the end side in the short direction of the workpiece relative to the plurality of cores.

13. The surfaces of the connecting portion of the first connecting core that are opposite to the core are linear in the longitudinal direction of the workpiece, The manufacturing method according to claim 12, wherein the surfaces of the connecting portion of the second connecting core that are opposite to the multiple cores are linear in the longitudinal direction of the workpiece.

14. The shearing step involves shearing from the workpiece, in addition to the first connecting core, the second connecting core, and the continuous scrap, a first pilot hole continuous scrap which is formed on the short-side end of the workpiece relative to the connecting portion of the first connecting core and is connected to a portion (166) in which a pilot hole is formed in the connecting portion of the first connecting core, and a second pilot hole continuous scrap which is formed on the short-side end of the workpiece relative to the connecting portion of the second connecting core and is connected to a portion in which a pilot hole is formed in the connecting portion of the second connecting core. The side of the first pilot hole continuous scrap opposite to the connecting portion of the first connecting core is linear in the longitudinal direction of the workpiece. The manufacturing method according to claim 12, wherein the side of the second pilot hole continuous scrap opposite to the connecting portion of the second connecting core is linear in the longitudinal direction of the workpiece.

15. The plurality of cores in the first connecting core and the second connecting core each have a yoke forming portion (141) that forms a part of the armature yoke and a tooth forming portion (142) that is connected to the yoke forming portion and forms a part of the teeth, The manufacturing method according to any one of claims 12 to 14, wherein, in the state of the workpiece, the tooth-forming portion of the second connecting core is arranged between a plurality of adjacent tooth-forming portions of the first connecting core, and the tooth-forming portion of the first connecting core is arranged between a plurality of adjacent tooth-forming portions of the second connecting core.

16. The manufacturing method according to any one of claims 12 to 15, wherein the shearing step is carried out using a high-speed press machine having a punch (41) that reciprocates in a direction perpendicular to the workpiece and a die (42) positioned opposite the punch with respect to the workpiece.

17. The manufacturing method according to any one of claims 12 to 15, wherein the shearing step is carried out using a high-speed roller processing machine (20) having a punch roller (211) having the punch (211) on the outer circumferential surface of the roller and positioned on one side of the thickness direction of the workpiece, and a die roller (22) having the die (221) on the outer circumferential surface of the roller and positioned on the other side of the thickness direction of the workpiece, opposite the punch roller and sandwiching the workpiece.

18. The high-speed roller processing machine has an upper roller (23) and a lower roller (24) positioned downstream of the punch roller and the die roller in the direction of conveying the workpiece, The upper roller has a flat curved surface on its outer circumferential surface and is positioned on one side in the thickness direction of the workpiece. The lower roller has a flat curved surface on its outer circumferential surface and is positioned on the other side of the workpiece in the thickness direction, facing the upper roller with the workpiece in between. The punch roller and the die roller shear the workpiece from one side in the thickness direction of the workpiece to the other side up to a point in the thickness of the workpiece, dividing the workpiece into the connecting core and the continuous scrap. The manufacturing method according to claim 17, wherein the upper roller and the lower roller push back from one side to the other side in the thickness direction of the workpiece, thereby completely shearing the workpiece into the connecting core and the continuous scrap.

19. A step of winding up the connecting core that has been sheared from the workpiece in the shearing step, The manufacturing method according to any one of claims 12 to 18, further comprising the step of winding up the continuous scrap that has been sheared from the workpiece in the shearing step.

20. The manufacturing method according to any one of claims 12 to 19, further comprising a coating step of applying an adhesive to the surfaces of the plurality of cores of the connecting core after the shearing step.

21. The manufacturing method according to claim 20, further comprising, after the coating step, a cutting step of cutting the connecting core into a plurality of cores and a connecting portion, and a pressing step of stacking and pressing the plurality of cores cut by the cutting step in the thickness direction of the plate.

22. The manufacturing method according to claim 21, further comprising a pilot hole machining step of machining a pilot hole (16) used for positioning when cutting the connecting core into a plurality of cores and the connecting portion in the cutting step, on the portion of the connecting core that will become the connecting portion.

23. In a shearing machine that manufactures cores (14) constituting a segment-type laminated core (1) from a strip steel sheet as a workpiece (11), The punch (41, 211) and die (42, 221) are used to transport the workpiece (11) in the longitudinal direction of the steel strip and to shear it into a continuous scrap (13) consisting of a plurality of cores and a connecting core (12) having a connecting portion (15) that connects the plurality of cores in the longitudinal direction, and the portion of the workpiece excluding the connecting core. The connecting core has a first connecting core (121) and a second connecting core (122) arranged in the short direction of the workpiece. The continuous scrap is a long piece of workpiece in which the portion between the first connecting core and the second connecting core is continuous. A shearing machine in which the first connecting core and the second connecting core are both provided with the connecting portion on the end side in the short direction of the workpiece relative to a plurality of cores.

24. The surfaces of the connecting portion of the first connecting core that are opposite to the core are linear in the longitudinal direction of the workpiece, The shearing machine according to claim 23, wherein the surfaces of the connecting portion of the second connecting core that are opposite to the multiple cores are linear in the longitudinal direction of the workpiece.

25. The shearing machine shears from the workpiece, in addition to the first connecting core, the second connecting core, and the continuous scrap, a first pilot hole continuous scrap which is formed on the short-side end of the workpiece relative to the connecting portion of the first connecting core and is connected to a portion (166) of the connecting portion of the first connecting core in which a pilot hole is formed, and a second pilot hole continuous scrap which is formed on the short-side end of the workpiece relative to the connecting portion of the second connecting core and is connected to a portion of the connecting portion of the second connecting core in which a pilot hole is formed. The side of the first pilot hole continuous scrap opposite to the connecting portion of the first connecting core is linear in the longitudinal direction of the workpiece. The shearing machine according to claim 23, wherein the side of the second pilot hole continuous scrap opposite to the connecting portion of the second connecting core is linear in the longitudinal direction of the workpiece.

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