JP2004064041A - Method of manufacturing iron core and apparatus suitable for the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remarkably improve workability in a blanking and fixing process when an ordinary magnetic steel sheet is fixed using an adhesive. <P>SOLUTION: In the process of blanking the magnetic steel sheet into a predetermined shape as unit iron cores and fixing the iron cores, (1) the steel sheet is blanked into the predetermined shape by using a blanking die, (2) the blanked iron cores are laminated, (3) when or after the iron cores are laminated, powder adhesive is applied on the surfaces or end faces of the iron cores, and (4) the laminated iron cores are integrated. Further, the process uses powder adhesive having an average grain size of 5 to 100 μm in the grain size distribution of powder. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus and a method for manufacturing a laminated iron core such as a motor and a transformer.
[0002]
[Prior art]
As a method of manufacturing a laminated iron core such as a motor or a transformer using an electromagnetic steel sheet, a steel sheet is punched into a unit iron core, and a predetermined number of unit iron cores are further laminated, bolted, caulked, welded or glued. It is common to fix using means such as varnish. After being fixed, the laminated iron core is subjected to processing such as installation of a winding coil, and is used as an iron core of a transformer or a motor.
[0003]
If the laminated iron core is weakly fixed, it may become loose or crack the unitary iron core, reducing the efficiency of coil winding work.In the case of a motor, it may cause noise or vibration. It needs to be fixed.
[0004]
However, when fixing by bolting, it is necessary to provide a through hole for passing the bolt in the laminated iron core, and if a through hole is provided in the laminated iron core, the magnetic characteristics of the laminated iron core will be deteriorated. Similarly, when the laminated iron core is fixed by welding, thermal distortion is caused in the welded portion, and in caulking, the magnetic properties of the laminated iron core may be deteriorated due to machining during dowel formation.
[0005]
When fixing the laminated iron core using an adhesive, the electromagnetic steel sheet is processed into an iron core shape, laminated, temporarily fixed with a clamp, etc., then immersed in a bath containing an adhesive or varnish, or The adhesive or varnish penetrates into the gap between the steel plates by using the capillary phenomenon by dropping the adhesive from above, and then is fixed by heating, etc. In particular, in the case of the motor stator, only the outer peripheral end of the iron core where the adhesive has penetrated adheres, and the inner peripheral side of the iron core becomes free and both ends of the lamination are lifted up and heated. At times, the viscosity of the adhesive or varnish becomes too low, causing excess adhesive or varnish to flow out, resulting in a decrease in the fixing strength or difficulty in treating the flowed-out adhesive.
In addition, it takes a long time to perform the impregnation with the adhesive or the varnish until it is fixed after the application, so that the workability is low.
[0006]
In order to solve such a problem, in Patent Document 1, when a laminated iron core is completely impregnated, an insulating hardening agent or a hardening agent and a hardening accelerator are attached to a steel sheet constituting the laminated iron core in advance. A method of laminating, winding and then impregnating is disclosed. This is because when the laminated iron core is fixed by impregnation, a hardener is attached in advance to rapidly cure the impregnated resin, preventing the adhesive from flowing out, and firmly fixing the steel plates together, and simultaneously insulating Nature.
[0007]
[Patent Document 1]
JP-A-57-3560
[Problems to be solved by the invention]
However, even with this method, it is necessary to apply an adhesive to each steel sheet constituting the laminated iron core, and although the time required for fixing can be reduced, the laminated iron core is processed into a unit iron core by punching or the like. The problem of low workability before fixing is not solved.
In general, a device for automatically supplying an adhesive is also commercially available, but the adhesive is hardened at a supply port at the time of suspension, so that maintenance is complicated, and a change in the viscosity of the adhesive solution due to air temperature causes an increase in the amount of the adhesive applied. There was a problem that it fluctuated.
[0009]
The present inventors have solved the problem of fixing a laminated iron core using such an adhesive, and have found a method capable of obtaining a laminated iron core with good workability and an apparatus suitable for the method, and the present invention. It has been reached.
[0010]
[Means for Solving the Problems]
(1) In a method of manufacturing a laminated iron core in which unitary iron cores punched into a predetermined shape from an electromagnetic steel sheet are laminated and fixed to be integrated, the unit iron core is laminated during the step of punching unitary iron cores and thereafter. A method for producing a laminated iron core, characterized in that a powdery adhesive is applied from the surface of the iron core or both the outer peripheral side and the inner peripheral side end surface.
(2) The method for producing a laminated iron core according to (1), wherein a powder adhesive having an average particle size of 5 to 100 μm in a particle size distribution of the powder is used.
(3) A thermosetting powder adhesive is applied from the surface of the laminated iron core or both the outer peripheral side and the inner peripheral side end surface during the lamination of the unit iron core, and the laminated iron core is heated to a predetermined temperature and pressurized. The method for producing a laminated iron core according to the above (1) or (2), wherein the laminated iron cores are integrated by doing so.
(4) Immediately after punching, apply a thermosetting powder adhesive to the surface of the unit iron core, stack the unit iron core with the thermosetting powder adhesive attached, and heat the laminated iron core to a predetermined temperature. The method for producing a laminated iron core according to the above (1) or (2), wherein the laminated iron core is integrated by applying pressure.
(5) The device according to any one of (1) to (4), wherein two or more unit core laminated portions are provided, and the laminated portions are replaced immediately after laminating a predetermined number of sheets to continuously punch and fix. Of manufacturing a laminated iron core.
(6) The method for producing a laminated iron core according to any one of the above (1) to (5), wherein a lateral pressure is applied to the iron core from a direction perpendicular to the laminating direction when the unit iron cores are laminated.
[0011]
(7) A punching section having a male punching die and a female punching die is provided, and a unitary iron core laminated portion for laminating the punched unitary iron cores is separately provided, and a unit of powder adhesive is used. An apparatus for manufacturing a laminated iron core, comprising: an adhesive supply unit for applying an adhesive from both the surface of a steel sheet of the iron core or both the outer peripheral side and the inner peripheral side end face.
(8) The apparatus for manufacturing a laminated iron core according to the above (7), wherein a pressurizing mechanism is provided in the unit core laminated portion.
(9) The apparatus for manufacturing a laminated iron core according to the above (7) or (8), wherein a pressurizing and heating mechanism is provided in the unit core laminated portion.
(10) The unit (7) to (9), wherein an adhesive supply unit for applying a powder adhesive to an end face of the laminate is provided on the unitary iron core laminate unit, and an exhaust port is provided on a surface facing the supply unit. The manufacturing apparatus of a laminated iron core according to any one of the above.
(11) The unit is characterized in that it comprises two or more unitary iron core laminated portions, and is continuously punched and fixed by being provided with a replacement device for exchanging the laminated portions immediately after lamination of a predetermined number and a unitary iron core discharging device. The apparatus for manufacturing a laminated iron core according to any one of (7) to (10).
(12) The apparatus for manufacturing a laminated iron core according to any one of (7) to (11), further including a damper mechanism for applying a side pressure to the iron core laminated on the unit iron core laminated portion.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific embodiments for implementing the present invention will be described.
In the present invention, the magnetic steel sheet provided for the laminated iron core may be a non-oriented magnetic steel sheet or a directional magnetic steel sheet, and a general steel sheet may be used as the magnetic steel sheet. Further, a high Si material, an amorphous alloy, or the like can be used, and is particularly suitable for use of a thin steel plate having a thickness of 0.10 to 0.35 mm. However, a material having a normal thickness is not limited.
[0013]
In the present invention, for processing the unit iron core, a device for punching a steel sheet into a unit iron core shape by a punching die is necessary. When the unitary iron cores are continuously laminated, the powdery adhesive is applied to the surface of the steel sheet or the laminated end surface to fix the laminated iron cores.
[0014]
The type of the adhesive used in the present invention is not particularly limited, but an acrylic resin adhesive, a urethane resin adhesive, an epoxy resin adhesive, a phenol resin adhesive, a nylon resin adhesive Various adhesives such as adhesives, polyester adhesives, polyurethane resin adhesives, modified olefin resin adhesives, synthetic rubber adhesives, vinyl chloride resin adhesives, and composite adhesives combining these adhesives can be used. . As a further suitable material, a thermosetting organic resin-based adhesive in which a chemical reaction proceeds by heating is appropriate, and specifically, one or more of epoxy resin, phenol resin, and the like are used as main components. Adhesive. Further, those obtained by adding a crosslinking agent to a polyester resin, a nylon resin, a polyurethane resin, a modified olefin resin, a synthetic rubber, or the like to impart thermosetting properties are also suitable. Further, an inorganic adhesive which cures by the progress of a dehydration condensation reaction by heating, or a cold-setting inorganic adhesive mainly containing calcium phosphate or the like may be used. In the case where heating is not preferable, for example, a pressure-curable adhesive encapsulated in a microcapsule or the like that breaks the curing agent by pressurization can be used.
[0015]
It is essential that the adhesive used in the present invention is a powder, and more preferably a relatively small particle having an average particle size in the particle size distribution of the powder of 5 to 100 μm. If the average particle size is less than 5 μm, the possibility of clogging during pneumatic feeding increases, and the cost of pulverization increases. If the average particle size exceeds 100 μm, the adhesiveness is deteriorated when applied to a steel sheet.
[0016]
In the case of heating in the present invention, as a heating means to be used, electric heating, induction heating, dielectric heating, electromagnetic wave irradiation, direct contact heating and the like can be used, and although not particularly limited, direct contact heating by an electric heater is used. Simple and suitable. In the present invention, the powder adhesive applied to the laminated iron core can be quickly melted and heat-cured by installing the heating device in the laminated portion and heating.
[0017]
Next, as a method of pressing to fix the iron core, a pressing punch is used in the present invention, but the pressing punch can be used as a male die of a punching die. In this case, it is possible to apply a large pressure to the laminated iron core by making the male type stroke larger than the normal punching stroke when the predetermined number of punched sheets is reached, and it is possible to further increase the fixing strength. it can. Further, in order to further strengthen the fixed laminated iron core, after this step, pressure heating may be performed again.
[0018]
In the present invention, as a method of applying the powder adhesive, a method of applying the adhesive one by one to the surface of the steel sheet before laminating may be used, or a method of applying from the end surface after the lamination may be used.
When powder adhesive is applied to the steel sheet surface one by one, the powder air feeding device is provided inside the male or female punching die or inside the pressure punch without reducing the workability. It is possible to apply a body adhesive.
[0019]
Further, by providing an exhaust port on the opposing surface of the powder adhesive supply section, it is possible to attach the powder extremely thinly to the iron core surface. That is, when an airflow containing powder is blown onto the iron core surface, the airflow is smoothly rectified by contacting the iron core surface by securing an escape path for the airflow, so that the powder is uniformly adhered. Can be.
[0020]
When the powder adhesive is applied from the end surface, an extremely large effect can be obtained by providing an exhaust port on the opposite surface. Conventionally, when the powder adhesive was applied from the lamination end face of the iron core, the ratio of the powder entering the gap between the iron cores was small and was unnecessarily adhered to the lamination end face, as disclosed in the present invention. In addition, by providing an exhaust port on the opposing surface of the powder supply unit, it is possible to smoothly introduce the adhesive into the gap between the laminated iron cores.
[0021]
The shape of the exhaust port is not particularly limited, but a slit-shaped exhaust port is preferable when the spraying position is changed as the layers are stacked, and two slits are particularly preferable when the coating area is to be thinner. It is preferable to provide the above exhaust ports.
It is also effective to provide a sirocco fan or the like downstream of the exhaust port to generate a negative pressure at the powder adhesive application site of the laminated iron core in order to smoothly guide the air flow containing the powder to the exhaust port. It is particularly effective when the powder adhesive is applied from the lamination end face.
[0022]
As a conventional iron core fixing technique using an adhesive, a liquid adhesive is generally used, but in the laminated iron core of the present invention, a powder adhesive is used to adhere to the steel sheet surface of the iron core. There is a characteristic in that the laminated iron core is fixed by heating and pressing.
[0023]
The apparatus for pneumatically feeding the powder adhesive is not particularly limited, and a generally commercially available apparatus may be used. As a commercially available powder feeding device, an electrostatic powder coating device for powder coating is also suitable for the present invention. As the electrostatic powder coating apparatus, a corona system and a tribo system are known. Either one can be used in the present invention, but the tribo system is more simple and more preferable.
Further, in the present invention, it is also possible to use together with another fixing method. In the case of a motor stator, the outer peripheral portion can be fixed by caulking, and the inner peripheral teeth can be fixed by using an adhesive.
[0024]
In the present invention, when heating, a heat insulating member can be provided between the punching die and the heating device. The temperature required for curing the organic resin-based thermosetting powder adhesive is generally between 80 ° C. and 200 ° C., and 100 ° C.-700 ° C. for inorganic adhesives. Since very high precision is required, it is necessary to prevent heat from being transmitted to the heating portion by a heat insulating member so that the mold does not expand. The heat insulating member used here is desirably one having high heat resistance such as ceramics, but is not particularly limited.
[0025]
In the present invention, when heating is necessary, the laminated iron core is heated to a predetermined temperature by a heating device installed adjacent to the lamination portion after or while the predetermined number of unit iron cores are being laminated. At this time, it is possible to align the end faces of the laminated iron cores from the side surfaces of the laminated or partially laminated unit iron cores by using a lateral pressure device provided with a damper mechanism.
[0026]
Further, in the present invention, it is possible to further increase the efficiency by providing two or more laminated sections and installing the laminated section movable device so that these can be alternately arranged immediately after the punching section. After the lamination is completed or every time the unit core is supplied, pressurize with a pressurizing device to melt and harden the powder adhesive, and adhere the laminated unit core in whole or in part to fix the core. It is to let. The arrangement of the laminated portions is not limited to a method of moving the laminated portions in a direction perpendicular to the supply direction of the steel sheet, but may be a rotating method in which a large number of laminated portions are arranged in a circle, or another method.
[0027]
Furthermore, it is also possible to move the unit iron core from the position immediately after the punching unit after laminating, and then pressurize the unit again with a pressurizing device to further firmly fix it.
[0028]
In the present invention, the following configuration can be considered as an apparatus suitable for the above-described iron core manufacturing method.
That is, a punching section having a male punching die and a female punching die is provided, and a unitary iron core laminated portion for laminating the punched unitary iron cores is separately provided, and the powder adhesive is subjected to the above-described punching. By providing a powder supply unit for applying to the surface or the end face of the extracted unit core, it is possible to integrate the laminated unit cores. Regarding the powder supply unit, the powder supply unit is provided in the united iron core laminated unit when it is applied to the end face of the laminated unit of the unit iron core, and the punching unit is used in the case where it is partially applied to the surface of the unit iron core. It is possible.
[0029]
Further, when the unit iron core is firmly fixed, a pressing mechanism can be provided in the unit iron core laminated portion. As the pressing mechanism, a pressing punch or a pressing punch may be used as a male die of a punching die. Furthermore, when a thermosetting powder adhesive is used, it is possible to provide a heating mechanism in the unit iron core laminated portion in addition to the above-mentioned pressurization. Examples of the heating mechanism include energization heating, induction heating, dielectric heating, electromagnetic wave irradiation, and direct contact heating.
[0030]
Furthermore, it is also possible to use a lateral pressure device provided with a damper mechanism so that the end surfaces of the laminated iron cores can be aligned from the side surfaces of the laminated or partially laminated unit iron cores in the unitary iron core laminated portion. It is. Further, in the present invention, it is also possible to provide a laminate moving device so that two or more laminates are provided and these can be alternately arranged immediately after the punching unit. This makes it possible to further increase the efficiency.
[0031]
【Example】
(Example 1)
FIG. 1 shows an embodiment of the present invention, in which a unitary iron core previously punched out of a hoop of an electromagnetic steel sheet into a predetermined motor core shape is used to laminate thermosetting powder on the iron core surface when laminating one by one. FIG. 4 is a cross-sectional explanatory view showing a state in which an adhesive is applied, laminated, and fixed by heating and pressing.
[0032]
In the figure, 1 is a unit iron core previously punched from an electromagnetic steel plate, 2 is a guide for holding the unit iron core in a stacked state, and 3 is a moving claw that hooks on the iron core when only one unit iron core is taken out from the lower part of the guide. 4 is a slide rail for moving the unit core, 5 is a pressurizing cylinder, 6 is an exhaust pipe, 7 is a sirocco fan, 8 is a unit core being laminated, 9 is a heat insulating member, 10 is a heating device, 11 Denotes a laminated iron core receiving stand, 12 denotes a powder adhesive supply pipe, 13 denotes a powder electrostatic gun, 14 denotes a powder adhesive supply tank, 15 denotes a mounting table, and 16 denotes a motor for driving the movable claw 3.
[0033]
The unit iron cores 1 are arranged for each direction in which they are stacked when they are put in the guide 2. The moving claw 3 takes out the unit iron cores 1 one by one from the lower part of the guide 2, moves on the slide rail 4, and sends the unit iron cores to the laminated iron core receiving stand 11. The powder adhesive pneumatically fed from the adhesive supply tank 14 is charged by the electrostatic powder gun 13 while the moving claw 3 is retracted to the initial position, and then the powder adhesive is transferred from the supply pipe 12 onto the laminated iron core 8. Applied. At this time, the airflow blown onto the laminated iron core 8 is exhausted from the exhaust pipe 6 to the outside of the apparatus by the sirocco fan 7. When the pneumatic feeding of the powder adhesive is intermittently stopped at the stage where the predetermined number of unit iron cores are stacked, the laminated iron core to be fixed is separated. As the layers are stacked, the pedestal 11 descends, and the laminated iron core 8 is heated by the heating device 10 and heated to a predetermined temperature. At this time, the laminated iron core is fixed by being pressed by the pressing cylinder 5.
[0034]
(Example 2)
FIG. 2 shows an embodiment of the present invention. In a case where the electromagnetic steel sheet 21 is punched into a unit iron core shape of a motor core and the punched steel sheets are laminated to form a laminated iron core, a thermosetting powder is formed on the surface of the iron core. FIG. 4 is a cross-sectional explanatory view showing a state in which the next iron core is stacked and heated and pressed and fixed after application of an adhesive.
[0035]
In the figure, 21 is an electromagnetic steel plate (supply member), 22 is a male die for punching a guide hole when punching a unit iron core from the supply member 21, 23 is a male die of an inner peripheral punching die, and 24 is a first step outer periphery. A male die of a punching die, 25 is a female die for punching a guide hole provided to face the die 22, 26 is a female die for inner peripheral punching corresponding to the die 23, and 27 is a die 24 A first-stage outer periphery punching die female mold 28 provided oppositely, 28 is a mold stand. Reference numeral 29 denotes a male die for punching the outer periphery of the unit iron core, which also serves as a pressure punch. Reference numeral 30 denotes a spring for adjusting the rolling force of the pressing punch. Numeral 31 indicates a state immediately before the punched unit iron cores are stacked. Reference numeral 32 denotes an exhaust pipe provided for passing airflow from the exhaust port to the outside of the mold. Reference numeral 33 denotes a female mold for punching the outer periphery provided opposite to the male mold and pressurizing punch 29.
[0036]
A heating device 34 heats the laminated iron core 37 from the side, and is separated from the mold stand 28 by a heat insulating member 35. Together with these and the above-mentioned male mold and pressure punch, a laminated portion is constituted.
The adhesive supply device includes an adhesive supply tank 39, a powder adhesive supply pipe 37, and a powder electrostatic gun. With these, the powder adhesive is applied to the iron core surface.
[0037]
The magnetic steel sheet 21 wound in a coil shape is continuously fed into the apparatus of the present invention by a feeder as a supply member. After the guide holes are provided by the guide hole punching dies 22 and 25, the inner peripheral side is punched by the male and female dies 23 and 26 of the punching dies. Next, an outer peripheral portion of a predetermined portion is punched by a male die 24 and a female die 27 of a first-stage outer peripheral punching die. Next, the steel plate 21 is punched into a unit iron core by a male die 29 and a female die 33 of a second-stage outer peripheral punching die that also serves as a pressure punch, and the iron core is pushed into the female die 33 and laminated.
[0038]
After the male die 29 of the second-stage outer peripheral punching die combined with the pressure punch is raised, the thermosetting powder adhesive pneumatically fed from the adhesive supply tank is charged by the electrostatic powder gun 38. Is sprayed onto the upper surface of the laminated iron core 36 through the supply pipe 37. Excess powder adhesive is discharged out of the mold from the exhaust pipe 32 together with the airflow. The laminated iron core 36 is heated from the side by the heating device 34, and the temperature is raised to 160 ° C., at which the thermosetting powder adhesive is cured, and the laminated iron core is fixed.
[0039]
【The invention's effect】
According to the present invention, it is possible to continuously fix the iron core in the step of punching the laminated iron core using the adhesive, and it is not the fixing using the conventional impregnation equipment. The core can be fixed, and the workability of the step of fixing the laminated iron core is greatly improved. Further, since the powder adhesive is used, handling is simple and maintenance is easy. Further, by providing the exhaust port, it is possible to produce a strong iron core with less adhesion unevenness because thin and uniform application is possible.
[Brief description of the drawings]
FIG. 1 shows a state in which a unitary iron core obtained by previously punching a magnetic steel sheet into a predetermined shape is coated with a powder adhesive on the surface of each steel sheet, laminated, heated and pressed, and fixed.
[FIG. 2] A hoop-shaped non-oriented electrical steel sheet is punched into a unit iron core shape, and a powder adhesive is applied to the surface of the steel sheet for each unit iron core, and is fixed by pressing and heating in a laminated portion. Indicates the status.
[Explanation of symbols]
1: unit iron core 2: guide 3: moving claw 4: slide rail 5: pressurizing cylinder 6: exhaust pipe 7: sirocco fan 8: laminated iron core 9: heat insulating member 10: heating device 11: laminated iron core receiving base 12 : Powder adhesive supply pipe 13: electrostatic gun 14: powder adhesive supply tank 15: mounting table 16: moving claw drive motor 21: hoop-shaped electromagnetic steel plate 22: guide hole punching die 23: inside Male of peripheral punching die 24: Male die of first stage outer peripheral punching die 25: Female die of guide hole punching die 26: Female die of inner peripheral punching die 27: Female of first stage outer peripheral punching die Mold 28: Mold stand 29: Second-stage outer periphery punching die combined use pressure punch 30: Spring for pressure punch 31: Unit iron core 32: Exhaust pipe 33: Second stage outer periphery punching die female mold 34: heating Location 35: heat insulating member 36: stacked iron core 37: adhesive supply pipe 38: electrostatic powder gun 39: adhesive supply device

Claims (12)

In a method of manufacturing a laminated iron core in which unitary iron cores punched into a predetermined shape from an electromagnetic steel sheet are laminated and fixed to each other, the unitary iron cores are stacked during the core lamination after the unitary iron core punching step. A method for producing a laminated iron core, characterized in that a powdery adhesive is applied from the surface or both the outer peripheral side and the inner peripheral side end face. 2. The method for producing a laminated iron core according to claim 1, wherein a powder adhesive having an average particle size of 5 to 100 [mu] m in a particle size distribution of the powder is used. During the lamination of the unit core, a thermosetting powder adhesive is applied from the surface of the laminated core or from both the outer and inner peripheral end faces, and the laminated core is heated to a predetermined temperature and pressed to be laminated. The method for producing a laminated iron core according to claim 1 or 2, wherein the iron core is integrated. Immediately after the punching, a thermosetting powder adhesive is applied to the surface of the unit iron core, the unit iron core to which the thermosetting powder adhesive is adhered is laminated, and the laminated iron core is heated to a predetermined temperature and heated. The method for producing a laminated iron core according to claim 1 or 2, wherein the laminated iron core is integrated by pressing. 5. The laminated iron core according to any one of claims 1 to 4, wherein the laminated core is continuously punched and fixed by replacing the laminated portion immediately after laminating a predetermined number of unit core cores. Method. The method for manufacturing a laminated iron core according to any one of claims 1 to 5, wherein a lateral pressure is applied to the iron core from a direction perpendicular to the laminating direction when the unit iron cores are laminated. Equipped with a punching section having a male punching die and a female punching die, separately provided with a unitary iron core laminating section for laminating the punched unitary iron cores, and a powder adhesive for the unitary iron core. An apparatus for manufacturing a laminated iron core, comprising: an adhesive supply section for applying from the surface of a steel sheet or from both an outer peripheral side and an inner peripheral side end face. The apparatus for manufacturing a laminated iron core according to claim 7, wherein a pressurizing mechanism is provided in the unit core laminated section. 9. The apparatus for manufacturing a laminated iron core according to claim 7, wherein a pressurizing and heating mechanism is provided in the unit iron core laminated portion. 10. An adhesive supply unit for applying a powder adhesive to an end face of the laminate is provided on the unitary iron core laminated unit, and an exhaust port is provided on a surface facing the supply unit. Equipment for manufacturing laminated iron cores. 8. The apparatus according to claim 7, wherein two or more unit core laminated parts are provided, and a unit for exchanging the laminated parts immediately after laminating a predetermined number of units and a unit for discharging the unit core are continuously punched and fixed. The apparatus for manufacturing a laminated iron core according to any one of claims 10 to 13. The apparatus for manufacturing a laminated iron core according to any one of claims 7 to 11, further comprising a damper mechanism for applying a side pressure to the iron core laminated on the unit core laminated portion.

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