JP4732071B2 - Metal sheet laminate manufacturing equipment - Google Patents

Description

  The present invention relates to an apparatus for manufacturing a thin metal plate laminate such as a laminated iron core of a rotating electric machine or a solenoid, a laminated mold or the like.

  In general, laminated iron cores, laminated dies, and the like of rotating electrical machines and solenoids are manufactured by a progressive die apparatus using a hoop material (thin strip plate) as a raw material. For example, a laminated core of a rotating electrical machine is formed by sequentially punching pilot holes, slot parts, inner diameter teeth, etc., into a hoop material in a progressive die device, and laminating a predetermined number of core sheets after outer punching. Manufactured by fixing. There are also the laminating caulking methods in which corrugation for caulking is formed on each iron thin plate and crimped and bonded together during lamination, and the laminating welding method in which the core thin plates are joined by laser welding etc. after lamination. However, since it is difficult to cause deterioration of the magnetic characteristics of the binding site, a lamination bonding method in which the iron core thin plates are laminated and bonded after punching the outer shape is widely adopted.

As a method of laminating and bonding using a normal hoop material, an oil removal mechanism removes press working oil adhering to the upper and lower surfaces of the hoop material after punching in a progressive die apparatus, and then the upper or lower surface of the hoop material is removed. A thermosetting adhesive is applied in a spot by an adhesive application mechanism at a predetermined position, and the core sheet after punching the outer shape is sequentially housed in a holding body (squeeze ring) under the die, and stacked by a heater embedded in the squeeze ring. The one that heats the outer periphery of the core group and laminates and adheres it (see Patent Document 1) is known. Moreover, as a method of stacking and bonding the iron core thin plate from a hoop material having a thermosetting insulating film (thermosetting adhesive) formed on the surface, the outer periphery of the iron core thin plate is subjected to a lateral pressure with a pressure plate for side pressure in the laminating process. The thermosetting insulation film is cured by heating the iron core thin plate with a heating device inserted from below into the inner diameter side (see Patent Document 2), or the iron core thin plate is placed in a back pressure block (squeeze ring). After laminating, one that is induction-heated from the outer periphery side by a high-frequency heating device installed on the outer periphery of the squeeze ring (see Patent Document 3), preheated the iron core thin plate in a single plate state, and then transferred to the lamination heating step There has been proposed one that pressurizes and heats after aligning the end faces (see Patent Document 4).
JP 2001-321850 A JP 2001-185433 A JP 2002-307636 A Japanese Patent No. 3567440

The conventional lamination bonding method described above has various problems as described below. For example, in patent document 1, since the structure which embeds a heater helically inside a squeeze ring is taken, it cannot be avoided that the intensity | strength of a holding body falls. Moreover, since the outer periphery of the laminated core group is heated by squeeze ring, it cannot be denied that the heating effect on the thermosetting adhesive between the core sheets is reduced. Moreover, in patent document 2, since the iron core thin plate after outer shape punching is conveyed and laminated | stacked on a lamination | stacking part, the enlargement and complexity of an apparatus were inevitable. In addition, since the laminated core thin plate group is heated from the inner peripheral side in the laminated portion, there is also a problem that the heating effect on the thermosetting insulating film between the iron core thin plates is lowered. In Patent Document 3, device configuration requires a high-frequency heat source (high-frequency oscillator and heating coils, etc.) is complicated, there is a problem such that the initial cost of equipment is high. Also in Patent Document 4, since the outer periphery of the laminated core group is heated as in Patent Document 1, there is a problem that the heating effect on the thermosetting insulating film between the iron core thin plates is also lowered.

  The present invention has been made in view of such a background, and effectively heats an iron core thin plate (that is, a thermosetting adhesive) laminated in a squeeze ring, thereby improving product quality and productivity. An object of the present invention is to provide an apparatus for manufacturing a thin metal plate laminate that achieves the above.

The invention of claim 1 has an external punch held by an upper die, an external punch die held by a lower die, and a squeeze ring installed immediately below the external punch die in the lower die, By punching a ring-shaped metal thin plate into the outer punching die from the material metal plate coated with a thermosetting adhesive by the outer punching punch, and holding the metal thin plate tightly in a stacked state in the squeeze ring, A metal sheet laminate manufacturing apparatus for manufacturing a metal sheet laminate by laminating and bonding a predetermined number of the metal sheets, wherein the metal sheet is formed from a hot air blowing nozzle installed radially inside the outer punching punch. The first hot air blowing means for blowing hot air on the inner periphery, and a plurality of hot air blowing holes formed at predetermined intervals on the inner peripheral wall of the squeeze ring. And a second heat air blowing means for blowing hot air to the first heat air blowing means may be stopped heat air blowing by the heat-air blow out nozzles when rise of the upper mold.

The invention of claim 2 includes an outer punching punch held by the upper die, an outer punching die held by the lower die, and a squeeze ring installed immediately below the outer punching die in the lower die. Then, a ring-shaped thin metal plate is punched into the outer punching die from the raw metal plate coated with a thermosetting adhesive by the outer punching punch, and the thin metal plate is clamped and held in the squeeze ring. Is a metal sheet laminate manufacturing apparatus for manufacturing a metal sheet laminate obtained by laminating and bonding a predetermined number of the metal sheets, and from the hot air blowing nozzle installed on the radially inner side of the outer punching punch a first heat air blowing means for blowing hot air to an inner periphery of the thin plate, the thin metal from a plurality of hot air Deana drilled at predetermined intervals on the inner peripheral wall of the squeeze ring And a second heat air blowing means for blowing hot air to the outer periphery of, characterized in that the first cylindrical heat insulating member is placed between the heat-air blow out nozzle and the outer punch.

Further, the invention of claim 3 has an outer punching punch held by the upper die, an outer punching die held by the lower die, and a squeeze ring installed immediately below the outer punching die in the lower die. Then, a ring-shaped thin metal plate is punched into the outer punching die from the raw metal plate coated with a thermosetting adhesive by the outer punching punch, and the thin metal plate is clamped and held in the squeeze ring. Is a metal sheet laminate manufacturing apparatus for manufacturing a metal sheet laminate obtained by laminating and bonding a predetermined number of the metal sheets, and from the hot air blowing nozzle installed on the radially inner side of the outer punching punch a first heat air blowing means for blowing hot air to an inner periphery of the thin plate, the thin metal from a plurality of hot air Deana drilled at predetermined intervals on the inner peripheral wall of the squeeze ring A second heat air blowing means for blowing hot air to the outer periphery of, characterized in that the outer punch and a first cooling means for cooling the cooling fluid.

Further, the invention of claim 4 includes an outer punching punch held by the upper die, an outer punching die held by the lower die, and a squeeze ring installed immediately below the outer punching die in the lower die. Then, a ring-shaped thin metal plate is punched into the outer punching die from the raw metal plate coated with a thermosetting adhesive by the outer punching punch, and the thin metal plate is clamped and held in the squeeze ring. Is a metal sheet laminate manufacturing apparatus for manufacturing a metal sheet laminate obtained by laminating and bonding a predetermined number of the metal sheets, and from the hot air blowing nozzle installed on the radially inner side of the outer punching punch a first heat air blowing means for blowing hot air to an inner periphery of the thin plate, the thin metal from a plurality of hot air Deana drilled at predetermined intervals on the inner peripheral wall of the squeeze ring Of a second heat air blowing means for blowing hot air to the outer periphery, said second heat air blowing means comprises a hot air supply passage for supplying hot air to the plurality of hot air Deana, of the plurality of hot air Deana The diameter is set according to the distance from the hot air supply path.

Further, the invention of claim 5 includes an outer shape punch held by the upper die, an outer shape punch die held by the lower die, and a squeeze ring installed immediately below the outer shape punch die in the lower die. Then, a ring-shaped thin metal plate is punched into the outer punching die from the raw metal plate coated with a thermosetting adhesive by the outer punching punch, and the thin metal plate is clamped and held in the squeeze ring. Is a metal sheet laminate manufacturing apparatus for manufacturing a metal sheet laminate obtained by laminating and bonding a predetermined number of the metal sheets, and from the hot air blowing nozzle installed on the radially inner side of the outer punching punch a first heat air blowing means for blowing hot air to an inner periphery of the thin plate, the thin metal from a plurality of hot air Deana drilled at predetermined intervals on the inner peripheral wall of the squeeze ring Comprising outer periphery and a second heat air blowing means for blowing hot air, having a die body wherein the lower die to hold the squeeze ring, the second tubular insulation between the die body and the squeeze ring A member is installed, and an annular hot air reservoir is formed between the squeeze ring and the second cylindrical heat insulating member.

The invention of claim 6 is the apparatus for manufacturing a sheet metal laminate according to claim 5 , wherein at least one of the squeeze ring and the second tubular heat insulating member is cooled by a cooling fluid. A cooling means is provided .

The invention of claim 7 is the apparatus for manufacturing a sheet metal laminate according to claim 6 , wherein the second cooling means is an outer periphery of at least one of the squeeze ring and the second cylindrical heat insulating member. And a spiral fluid passage formed through the cooling fluid .

The invention of claim 8 is the apparatus for manufacturing a sheet metal laminate according to claim 6 or claim 7, wherein the second cooling means includes the squeeze ring and the second cylindrical heat insulating member. It is provided with the porous body which is arrange | positioned at the outer peripheral side of at least one, and is used for the retention of the said cooling fluid .

According to the invention of claim 1, since hot air is used for heating the thin metal plate, it is possible to suppress a decrease in the strength of the squeeze ring and a complicated device configuration. In addition, the hot air is not wasted, and the temperature rise of the external punch or external punch die can be suppressed. According to the invention of claim 2 , the heat of the hot air blowing nozzle is hardly transmitted to the outer punching punch, and the temperature rise of the outer punching punch can be suppressed. According to the invention of claim 3 , since the outer punching can be positively cooled, it is possible to suppress a decrease in the dimensional accuracy of the punched metal sheet. According to the invention of claim 4 , for example, the amount of hot air blown from each hot air blowing hole to the metal thin plate can be made uniform. According to the invention of claim 5 , the temperature rise of the lower mold due to the hot air stored in the hot air reservoir can be suppressed. According to the sixth aspect of the present invention, the temperature increase of the squeeze ring and the second cylindrical heat insulating member can be suppressed, and the tightening force on the metal thin plate is hardly lowered. According to the invention of claim 7 , the cooling fluid slowly flows on the outer periphery of the squeeze ring or the second cylindrical heat insulating member, and the cooling effect of the squeeze ring, the outer shape punching die, or the like is improved. According to the eighth aspect of the present invention, the cooling effect of the squeeze ring, the outer shape punching die, and the like is further improved because the cooling fluid stays in the porous body.

  Hereinafter, with reference to the drawings, an embodiment in which the present invention is applied to a stator (stator) manufacturing apparatus for a rotating electrical machine and a partial modification will be described in detail.

Embodiment
FIG. 1 is a schematic configuration diagram of a laminated core manufacturing apparatus according to the embodiment, FIG. 2 is a strip layout diagram according to the embodiment, and FIG. 3 is a plan view of the core thin plate according to the embodiment. 4 is an enlarged vertical cross-sectional view of a portion II in FIG. 1, and FIG. 5 is a vertical cross-sectional view of the upper die according to the embodiment.

<< Configuration of Embodiment >>
<Overall configuration>
As shown in FIG. 1, the laminated core manufacturing apparatus 1 includes a roll device 2 for supplying a hoop material (raw metal plate) W <b> 1 of an electromagnetic steel sheet, and a hoop material by moving an upper mold 3 up and down relative to a lower mold 4. It consists of a progressive die device 5 that applies press processing or the like to W1, and a conveyor device 6 that conveys the completed laminated core SC to an assembly line or the like. The progressive die apparatus 5 includes an outer punching mechanism 10 for punching a ring-shaped iron core thin plate (metal thin plate) W2 (see FIG. 2) from a hoop material W1, and a laminating adhesive mechanism 11 for laminating and bonding the punched iron core thin plate W2. And are provided. In the laminated core manufacturing apparatus 1, the first hot air supply device 12 that supplies hot air to the outer shape punching mechanism 10, the second hot air supply device 13 that supplies hot air to the laminated bonding mechanism 11, and the outer shape punching mechanism 10 are cooled. A first cooling air supply device 14 that supplies air and a second cooling air supply device 15 that supplies cooling air to the laminated bonding mechanism 11 are attached.

<Outline punching mechanism>
As shown in FIG. 4, the outer shape punching mechanism 10 includes a cylindrical outer shape punch (hereinafter simply referred to as an outer shape punch) 21 held by the upper die 3 and a stripper slidably fitted to the outer shape punch 21. The plate 22 and an external punching die (hereinafter simply referred to as a die) 23 held by the lower mold 4 are main components. The outer punch 21 is fixed to a punch plate 25 (that is, the upper die 3 side) via a punch holder 24 and moves up and down integrally with the upper die 3. The die 23 is fixed to the lower mold sub-plate 29 via the die plate 26 and the die body 27.

  As shown in FIG. 5, a hot air blowing nozzle 31 made of PTFE (ethylene tetrafluoride), which is a heat-resistant resin, is interposed in a hollow portion of the outer shape punch 21 via a cylindrical heat insulating spacer 32 made of a calcium silicate plate. Installed. The hot air blowing nozzle 31 has a hot air passage 31a formed at the axial center, a plurality of injection holes 31b drilled at the tip, a hot air introduction passage 31c formed at the base end side, and a hot air introduction passage 31c. A valve hole 31 d is provided, and is fastened to the punch plate 25 by a bolt 33.

  A hot air heater head 34 fitted on the wall surface of the punch holder 24 is attached to the side wall of the heat insulating spacer 32 at a position facing the inlet (outside) of the hot air introduction passage 31 c of the hot air blowing nozzle 31. A solenoid valve 35 having a PTFE valve rod 35 a is attached to the punch plate 25, and the valve rod 35 a passes through the punch plate 25, the punch holder 24, and the valve hole 31 d of the hot air blowing nozzle 31. The outlet (inside) of the hot air introduction path 31c is closed. The hot air heater head 34 is connected to the first hot air supply device 12 via a pipe (not shown), and hot air is always supplied from the first hot air supply device 12 to the hot air heater head 34 during operation of the laminated core manufacturing apparatus 1. .

  On the other hand, the outer shape punch 21 has an annular groove 21a formed on its upper surface (joint surface with the punch holder 24), a cooling air introduction path 21b that opens to one side surface and communicates with the annular groove 21a, and the other side. A cooling air discharge passage 21c that is open to the side surface and communicates with the annular groove 21a is formed. In the stripper plate 22, a cooling air introduction path 22a and a cooling air discharge path 22b are formed at positions corresponding to the cooling air introduction path 21b and the cooling air discharge path 21c of the outer punch 21, respectively. The cooling air introduction path 22a is connected to the first cooling air supply device 14 via a cooling pipe 37. When the laminated core manufacturing apparatus 1 is operated, the cooling air is supplied from the first cooling air supply device 14 to the cooling air introduction path 22a. Is always supplied. In addition, a cooling air throttle valve 36 is attached to the cooling air discharge path 22b in order to adjust the discharge amount (that is, the flow rate) of the cooling air.

<Lamination adhesion mechanism>
As shown in FIG. 4, the laminate bonding mechanism 11 includes a squeeze ring 41 positioned directly below the die 23 in the lower mold 4 as a main component. The squeeze ring 41 is fixed to the lower mold sub-plate 29 via the die body 27 and the receiving plate 42. The die body 27 has a relatively small-diameter squeeze ring holding part 27a formed at the upper part and a relatively large-diameter heat insulating ring holding part 27b formed below the squeeze ring holding part 27a. The squeeze ring 41 is fitted in the squeeze ring holding part 27a.

  The inner diameter of the squeeze ring 41 is set slightly smaller than the inner diameter of the die 23, and the core thin plate W2 punched by the outer punching mechanism 10 is tightly held with a predetermined tightening force. On the peripheral wall of the squeeze ring 41, twelve hot air blowing holes 43 a, 43 b, 43 c are formed in three upper and lower stages at equal angular intervals (45 ° intervals). The middle hot air blowing hole 43b has a larger diameter than the lower hot air blowing hole 43c, and the upper hot air blowing hole 43a has a larger diameter than the middle hot air blowing hole 43b. Further, a reduced diameter portion 41a is formed on the outer peripheral side of the squeeze ring 41, and each of the hot air blowing holes 43a, 43b, 43c described above opens into the reduced diameter portion 41a. Further, a spiral groove 41b through which cooling air, which will be described later, flows is formed on the upper outer peripheral surface of the squeeze ring 41.

  The squeeze ring 41 is surrounded by a heat insulating ring 44 made of a calcium silicate plate, except for portions held by the die body 27 and the receiving plate 42. The heat insulating ring 44 is fitted into the heat insulating ring holding portion 27b of the die body 27, and has an enlarged diameter portion 44a that forms a hot air pool 45 together with the reduced diameter portion 41a of the squeeze ring 41 on the inner peripheral side thereof. is doing. The heat insulation ring 44 has a hot air introduction passage 44b communicating with the outer peripheral side thereof and the hot air reservoir 45 formed in the lower portion, and a spiral groove 44c through which cooling air described later flows is formed on the outer peripheral surface.

  A hot air heater head 46 is attached to one side wall of the die body 27 at a position facing the inlet (outside) of the hot air introduction path 44 b of the heat insulating ring 44. The hot air heater head 46 is connected to the second hot air supply device 13 through a pipe (not shown), and hot air is constantly supplied from the second hot air supply device 13 to the hot air heater head 46 during operation of the laminated core manufacturing apparatus 1. .

  On the other side wall of the die body 27, a cooling air introduction path 27c and a cooling air discharge path 27d communicating with the spiral groove 44c of the heat insulating ring 44 are formed vertically. The cooling air introduction path 27c is connected to the second cooling air supply device 15 through the cooling pipe 47, and when the laminated core manufacturing apparatus 1 is operated, the cooling air is supplied from the second cooling air supply device 15 to the upper part of the spiral groove 44c. Is always supplied. A cooling air throttle valve 48 is attached to the cooling air discharge path 27d in order to adjust the discharge amount (that is, the flow rate) of the cooling air.

≪Manufacturing process of laminated iron core≫
Hereinafter, the manufacturing process of the laminated core SC in the embodiment will be described.
When the laminated core manufacturing apparatus 1 is started, intermittent conveyance in the progressive die apparatus 5 with respect to the hoop material W1 supplied from the roll apparatus 2 is started, and at the same time, the first and second hot air supply apparatuses 12, 13 and the first The supply of hot air or cold air to the progressive die device 5 by the first and second cooling air supply devices 14 and 15 is also started.

In the progressive die apparatus 5, as shown in FIG. 2, a pilot hole punching process (1) for drilling pilot holes P in the hoop material W1 intermittently supplied from the roll device 2, and a slot S and an inner diameter d in the hoop material W1. An inner diameter punching step (2) for punching out, etc., an adhesive application step (3) for applying an adhesive E to the lower surface of the hoop material W1, and a core sheet W2 (see FIG. 2 ) from the hoop material W1 are laminated. The outer shape punching / lamination bonding step (4) for bonding is sequentially performed.

  When the hoop material W1 is conveyed to the outer shape punching mechanism 10 in the outer shape punching / lamination bonding step, as shown in FIGS. 6 and 7, the upper die 3 reciprocates up and down, whereby the iron core thin plate W2 is moved to the hoop material W1. Are punched sequentially, and the punched iron core sheet W2 is pushed into the die 23. The iron core thin plate W2 is tightly held by the squeeze ring 41 so that the iron core thin plate W2 is stacked in the die 23 and the squeeze ring 41 in close contact with each other. .

<Heating of iron core sheet>
As shown in FIGS. 6 and 7, during the operation of the laminated core manufacturing apparatus 1, the hot air supplied from the second hot air supply device 13 enters the hot air pool 45 via the hot air heater head 46 and the hot air introduction path 44 b. It flows in and is blown to the outer peripheral surface of the iron core thin plate W2 laminated from hot air blowing holes 43a, 43b, 43c formed in the squeeze ring 41. At this time, the hot air blowing holes 43a, 43b, 43c are set so that the diameter thereof increases as the distance from the hot air introduction path 44b increases (from the bottom to the top). The amount of hot air blown from 43c is substantially uniform.

  On the other hand, as shown in FIG. 7, when the upper die 3 is lowered by a predetermined amount (in the case of this embodiment, when the stripper plate 22 contacts the hoop material W1), the solenoid valve 35 is excited by a command from a control device (not shown). Then, the valve rod 35a moves to the left in the drawing, and the hot air introduction path 31c is unblocked (the hot air introduction path 31c is opened). Thereby, the hot air supplied from the first hot air supply device 12 flows into the hot air passage 31a of the hot air blowing nozzle 31 via the hot air heater head 34 and the hot air introduction passage 31c, and is laminated from the injection hole 31b. Sprayed to the inner peripheral surface of W2. The hot air blowing from the hot air blowing nozzle 31 (that is, the opening of the hot air introduction path 31c) is performed until the outer core punch 21 punches the iron core thin plate W2 from the hoop material W1 and the stripper plate 22 is separated from the hoop material W1 again. . This is because, when the hot air introduction path 31c is opened when the stripper plate 22 is lifted, hot air flows unnecessarily from between the upper die 3 and the lower die 4, and the outer punch 21 and the die 23 are unnecessarily heated. Because.

  In this embodiment, since the iron core thin plate W2 in the squeeze ring 41 is heated from both the outer peripheral side and the inner peripheral side in this way, the adhesive E between the iron core thin plates W2 can be quickly cured. As a result, the product quality and productivity of the laminated core SC can be improved.

<Cooling of punches and squeeze rings>
As shown in FIG. 6 and FIG. 7, during operation of the laminated core manufacturing apparatus 1, the cooling air supplied from the first cooling air supply device 14 passes through the cooling air introduction path 22 a of the stripper plate 22 and has an outer shape punch. 21, the heat of the outer punch 21 is removed while passing the heat of the outer punch 21 while passing through the cooling air introducing passage 21 b, the annular groove 21 a and the cooling air discharge passage 21 c, and the cooling air discharge passage of the stripper plate 22 22 b and the cooling air throttle valve 36 are discharged to the outside. Thereby, the temperature rise of the outer shape punch 21 can be effectively suppressed due to the fact that the heat insulating spacer 32 is interposed between the hot air blowing nozzle 31.

  On the other hand, the cooling air supplied from the second cooling air supply device 15 is introduced into the spiral groove 44c of the heat insulation ring 44 and the spiral groove 41b of the squeeze ring 41 via the cooling pipe 47 and the cooling air introduction path 27c. After the heat of the heat insulation ring 44 and the squeeze ring 41 is taken while passing through both the spiral grooves 44c and 41b, the heat is discharged to the outside through the cooling air discharge passage 27d and the cooling air throttle valve 48. Thereby, the temperature increase of the squeeze ring 41, the die body 27, the die 23, and the die plate 26 is effective in combination with the heat insulation ring 44 interposed between the die body 27 and the squeeze ring 41. Can be suppressed.

  In this embodiment, the iron core sheet W2 in the squeeze ring 41 is effectively heated while the temperature of the outer punch 21, the die 23, the squeeze ring 41, etc. is kept low. Due to the dimensional accuracy of the thin plate W2 and the squeeze ring 41, the tightening force of the iron core thin plate W2 could be kept high.

[Partial variations]
FIG. 8 is a longitudinal sectional view according to a partial modification. As shown in this figure, the overall configuration of some modified examples is substantially the same as that of the above-described embodiment, but an annular porous body 51 is interposed between the die body 27 and the heat insulating ring 44. . In a partially modified example, the cooling air from the cooling air introduction passage 27 c gradually flows into the cooling air discharge passage 27 d by staying in the porous body 51, so that the squeeze ring 41, the die body 27, the die 23, and the die plate 26 are used. The temperature rise of the iron core sheet W2 can be more effectively suppressed, and the dimensional accuracy of the punched iron sheet W2 and the squeeze ring 41 can keep the tightening force of the core sheet W2 even higher.

  Although description of specific embodiment is finished above, the aspect of the present invention is not limited to this embodiment. For example, in the above embodiment, the present invention is applied to an apparatus for manufacturing a stator for a rotating electrical machine, but may be applied to an apparatus for manufacturing a rotor (rotor) for a rotating electrical machine, You may apply to manufacturing apparatuses, such as a lamination mold. Further, the shape of the thin metal plate may be a rectangle, a sector, or the like, and an aluminum alloy plate or the like may be employed as the material metal plate. Moreover, in the said embodiment, although the thermosetting adhesive agent was apply | coated to the hoop material within the progressive die apparatus, you may make it use the hoop material in which the thermosetting insulating film was formed in the surface. Further, in the above embodiment, the core sheet is obtained by performing a plurality of punching processes on the hoop material in the progressive die apparatus, but the core sheet is obtained by a so-called one punch mold that performs both the inner diameter punching and the outer shape punching simultaneously. It may be. In the above embodiment, the cooling air is used as the cooling fluid for cooling the outer shape punch, the squeeze ring, and the like. However, a cooling liquid or the like may be used. In addition, the specific shape and arrangement of the hot air blowing nozzle and the hot air blowing hole, as well as the specific configuration of the outer shape punching mechanism and the laminating and bonding mechanism are not limited to the examples in the above embodiment and some modified examples. Any change can be made as long as it does not depart from the gist of the present invention.

It is a schematic block diagram of the laminated iron core manufacturing apparatus which concerns on embodiment. It is a strip layout figure concerning an embodiment. It is a top view of the iron core thin plate concerning an embodiment. It is the II section enlarged vertical sectional view in FIG. It is a longitudinal cross-sectional view of the upper mold | type which concerns on embodiment. It is a principal part longitudinal cross-sectional view which shows the effect | action of embodiment. It is a principal part longitudinal cross-sectional view which shows the effect | action of embodiment. It is a principal part longitudinal cross-sectional view which shows a partial modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Laminated iron core manufacturing apparatus 2 Roll apparatus 3 Upper mold | type 4 Lower mold | type 5 Mold apparatus W1 Hoop material (material metal plate)
W2 Iron core sheet (metal sheet)
DESCRIPTION OF SYMBOLS 10 External punching mechanism 11 Lamination | stacking adhesion mechanism 12 1st hot air supply apparatus 13 2nd hot air supply apparatus 14 1st cooling air supply apparatus 15 2nd cooling air supply apparatus 21 External punch (outline punching punch)
22 Stripper plate 23 Die (external punching die)
31 Hot air blowing nozzle 32 Thermal insulation spacer (cylindrical thermal insulation member)
34 Hot Air Heater Head 35 Solenoid Valve 41 Squeeze Ring 41b Spiral Groove 43a Hot Air Blow Hole 43b Hot Air Blow Hole 43c Hot Air Blow Hole 44 Heat Insulation Ring (Cylinder Heat Insulation Member)
44c Spiral groove 46 Hot air heater head 51 Porous body E Adhesive SC Laminated iron core

Claims (8)

An outer punching punch held in the upper die, an outer punching die held in the lower die, and a squeeze ring installed immediately below the outer punching die in the lower die, and coated with a thermosetting adhesive By punching a ring-shaped metal thin plate into the outer shape punching die from the formed raw material metal plate by the outer shape punching punch, and holding the metal thin plate in a stacked state in the squeeze ring, the metal thin plates are pre-determined by a predetermined number. A metal sheet laminate manufacturing apparatus for manufacturing a sheet metal laminate obtained by laminating and bonding, wherein hot air is blown from the hot air blowing nozzle installed on the radially inner side of the outer punch to the inner periphery of the metal sheet. 1 hot air spraying means, and hot air is sprayed to the outer periphery of the thin metal plate from a plurality of hot air blowing holes formed at predetermined intervals on the inner peripheral wall of the squeeze ring That the second and a thermal air blowing means, the first heat air blowing means, said upper mold of an apparatus for producing sheet metal laminates, characterized in that to stop the hot air with by the heat-air blow out nozzles at elevated . An outer shape punch held in the upper die, an outer shape punch die held in the lower die, and a squeeze ring installed directly below the outer shape punch die in the lower die,
By punching a ring-shaped metal thin plate into the outer punching die from the material metal plate coated with a thermosetting adhesive by the outer punching punch, and holding the metal thin plate tightly in a stacked state in the squeeze ring, A metal thin plate laminate manufacturing apparatus for manufacturing a metal thin plate laminate formed by laminating and bonding a predetermined number of the metal thin plates,
First hot air blowing means for blowing hot air from the hot air blowing nozzle installed on the radially inner side of the outer punching punch to the inner periphery of the thin metal plate ;
Second hot air blowing means for blowing hot air to the outer periphery of the thin metal plate from a plurality of hot air blowing holes formed at predetermined intervals on the inner peripheral wall of the squeeze ring ,
An apparatus for producing a sheet metal laminate, wherein a first cylindrical heat insulating member is installed between the outer punch and the hot air blowing nozzle. An outer shape punch held in the upper die, an outer shape punch die held in the lower die, and a squeeze ring installed directly below the outer shape punch die in the lower die,
By punching a ring-shaped metal thin plate into the outer punching die from the material metal plate coated with a thermosetting adhesive by the outer punching punch, and holding the metal thin plate tightly in a stacked state in the squeeze ring, A metal thin plate laminate manufacturing apparatus for manufacturing a metal thin plate laminate formed by laminating and bonding a predetermined number of the metal thin plates,
First hot air blowing means for blowing hot air from the hot air blowing nozzle installed on the radially inner side of the outer punching punch to the inner periphery of the thin metal plate;
Second hot air blowing means for blowing hot air to the outer periphery of the thin metal plate from a plurality of hot air blowing holes formed at predetermined intervals on the inner peripheral wall of the squeeze ring;
An apparatus for producing a sheet metal laminate, comprising: a first cooling means for cooling the outer punching punch with a cooling fluid. An outer shape punch held in the upper die, an outer shape punch die held in the lower die, and a squeeze ring installed directly below the outer shape punch die in the lower die,
By punching a ring-shaped metal thin plate into the outer punching die from the material metal plate coated with a thermosetting adhesive by the outer punching punch, and holding the metal thin plate tightly in a stacked state in the squeeze ring, A metal thin plate laminate manufacturing apparatus for manufacturing a metal thin plate laminate formed by laminating and bonding a predetermined number of the metal thin plates,
First hot air blowing means for blowing hot air from the hot air blowing nozzle installed on the radially inner side of the outer punching punch to the inner periphery of the thin metal plate;
Comprising a <br/> and second heat air blowing means for blowing hot air to the outer periphery of the sheet metal from a plurality of hot air Deana drilled at predetermined intervals on the inner peripheral wall of the squeeze ring,
The second hot air blowing means includes a hot air supply path for supplying hot air to the plurality of hot air blowing holes, and the diameter of the plurality of hot air blowing holes is set according to the distance from the hot air supply path. An apparatus for producing a thin metal sheet laminate. An outer shape punch held in the upper die, an outer shape punch die held in the lower die, and a squeeze ring installed directly below the outer shape punch die in the lower die,
By punching a ring-shaped metal thin plate into the outer punching die from the material metal plate coated with a thermosetting adhesive by the outer punching punch, and holding the metal thin plate tightly in a stacked state in the squeeze ring, A metal thin plate laminate manufacturing apparatus for manufacturing a metal thin plate laminate formed by laminating and bonding a predetermined number of the metal thin plates,
First hot air blowing means for blowing hot air from the hot air blowing nozzle installed on the radially inner side of the outer punching punch to the inner periphery of the thin metal plate;
Comprising a <br/> and second heat air blowing means for blowing hot air to the outer periphery of the sheet metal from a plurality of hot air Deana drilled at predetermined intervals on the inner peripheral wall of the squeeze ring,
The lower mold has a die body for holding the squeeze ring;
A second cylindrical heat insulating member is installed between the die body and the squeeze ring, and an annular hot air pool is formed between the squeeze ring and the second cylindrical heat insulating member. Equipment for manufacturing metal sheet laminates.   The apparatus for producing a sheet metal laminate according to claim 5, further comprising second cooling means for cooling at least one of the squeeze ring and the second cylindrical heat insulating member with a cooling fluid. .   The second cooling means includes a spiral fluid path formed on an outer periphery of at least one of the squeeze ring and the second cylindrical heat insulating member and through which the cooling fluid flows. Item 7. A manufacturing apparatus for a metal sheet laminate according to Item 6.   The second cooling means includes a porous body that is disposed on an outer peripheral side of at least one of the squeeze ring and the second cylindrical heat insulating member and is used for retention of the cooling fluid. The apparatus for producing a sheet metal laminate according to claim 6 or 7, characterized in that it is characterized in that:

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