KR20180023758A - Apparatus and Method for Manufacturing Laminated Rotor Core and Stator Core with Rotational Lamination and Heating Adhesion and with Automated Core Separation - Google Patents

Abstract

According to the present invention, provided is a method for manufacturing a rotary laminated core with heating adhesion capable of automatic laminated core separation, in a method for manufacturing a laminated core by simultaneously blanking a rotor core and a stator core on a single strip. A process of blanking the rotor core includes: a first piercing process of forming a shaft hole on a strip; a first blanking process of blanking the strip after the first piercing process to form a single lamina member; and a first lamination process of laminating a plurality of lamina members. A process of blanking the stator core includes: a second piercing process of forming a slot unit and a shape of teeth on the strip; a blanking process of blanking the strip after the second piercing process to form a single lamina member; and a second lamination process of laminating a plurality of lamina members. In the first and the second lamination process, the lamina members laminated during the first and the second lamination process are heated, and a single lamina member is rotated and laminated whenever the lamina member is laminated. An upward protrusion for separation and a downward protrusion for separation are formed on a lamina member laminated after a prescribed number of the lamina members are laminated.

Description

FIELD OF THE INVENTION The present invention relates to a rotating-heated adhesive rotor core and a stator core which can be automatically separated from a laminated core, and a method for manufacturing the rotor core and stator core simultaneously.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a core manufactured by laminating a laminar member. More specifically, the present invention relates to a method of manufacturing a laminated sheet, in which a laminated member is formed by successively punching a rotor core and a stator core in a single mold apparatus, The present invention relates to a device for manufacturing a heat-bonding type rotating laminated core in which a member can be laminated while being rotated at a constant pitch and the laminated core product can be automatically separated.

Generally, a laminated core obtained by laminating lamination members obtained through a stamping and blanking process is used as a stator or rotor of a motor or a generator, and a method of manufacturing the laminated core is well known in the art.

A stamper provided in a progressive mold apparatus is sequentially subjected to a stamping process and a blanking process of a rotor slot portion and a rotary shaft hole stamp, a slot portion of a stator, and a tooth, and a blanking process is continuously performed to form a single lamina member And a laminated member is laminated by a predetermined number of sheets of lamina members whose outer shape is stamped finally, and lamina members are bonded to each other to manufacture a motor laminated core. As described in Korean Patent Laid-Open Publication No. 10-2005-0026882, for example, embossing is performed on each lamina member, and the embossing lamination method Are typically known.

In this embossing laminated motor core, since the shape of male and female protrusions formed on the base material is fastened in a forced fit manner, the steel core acts like a speed restricting jaw installed on the road, resulting in loss of iron loss and magnetic flux density. In addition, there is a problem that the drop rate is lowered and vibration noise occurs due to the resonance phenomenon.

In order to solve such a problem, a method of attaching lamina members to each other using an adhesive or an adhesive film has been proposed. Such prior arts include Korean Patents 10-1627471, 10-1618708, 10-1616987 and 10-1618709. In these prior arts, the squeeze ring in which the lamina member is laminated is heated to thermally cure the adhesive or the adhesive film applied to the lamina member to assure the mutual connection of the lamina members.

In general, when manufacturing a laminated core, the shape of the core sheet punched out by blanking is not always accurately maintained due to warping of the strip at the time of processing, and a certain deviation occurs. Therefore, when the core sheet is laminated repeatedly several times, the concentricity or the perpendicularity is not constant due to the cumulative deviation in the finished core, so that contact between the stator and the rotor occurs or noise or vibration may occur due to irregular intervals It is causing the defect.

      Another reason for the above-described defective product is that the rotor core and the stator core are separately machined by the respective progressive mold apparatuses, so that the molds for separately manufacturing the cores must be prepared, There is a disadvantage that additional space for installation is required and disadvantages such as an increase in manufacturing cost due to strip consumption for manufacturing each core are pointed out.

On the other hand, the prior art discloses a technique for heating a squeeze ring to directly heat a core product stacked in a squeeze ring. However, in the case of heating the squeeze ring, the adhesive or the adhesive film on the outer diameter side of the core can be sufficiently cured by heat, but since the inner diameter side portion of the squeeze ring is heated by the thermal conductivity of the core itself, sufficient thermal curing It is not easy. This can not provide a sufficient adhesive force between laminated lamina members, and thus causes a problem of quality defects such as a laminated portion on the inner diameter side of the core being widened.

The present inventor has proposed a heating and adhesive laminated rotary laminated core manufacturing apparatus capable of stacking laminar members while rotating the squeeze ring by a predetermined pitch and directly heating the inner diameter side of the laminated core I want to.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for manufacturing a heated adhesive rotary laminated core which continuously processes and automatically separates a rotor core and a stator core in a single mold apparatus.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for manufacturing a heated adhesive rotary laminated core wherein a squeeze ring can be stacked while a sheet of a laminated core is heated by a predetermined pitch while being heated.

Another object of the present invention is to provide an apparatus for manufacturing a heat-bonding type rotating laminated core capable of directly heating an inner diameter side of a laminated core.

The above and other objects of the present invention can be easily achieved by the present invention described below.

The present invention provides a method for manufacturing a laminated core which is capable of automatically separating a laminated core according to the present invention. The laminated core is produced by simultaneously pressing a rotor core and a stator core on one strip.

The step of punching the rotor core includes a first piercing step of forming the shape of the shaft hole on the strip;

A first blanking step of forming a lamina member by tapping the strip after the first piercing step; And

And a first lamination step of laminating a plurality of lamina members,

The step of striking the stator core includes a second piercing step of forming a shape of a slot portion and a tooth on a strip;

A blanking step of forming a lamina member by punching the strip after the second piercing step; And

And a second lamination step of laminating a plurality of lamina members,

In the first and second lamination steps, the laminated members laminated in the first and second lamination steps are heated and laminated while being rotated by a predetermined pitch every time one laminated member is laminated, and the laminated member And the laminar member, which is laminated after a predetermined number of sheets, is formed by stacking up and down separating projections and separating downward projections.

The apparatus for manufacturing a heated adhesive rotary laminated core according to the present invention comprises

A strip 100A consisting of an upper mold 3 and a lower mold 4 and in which a punch mounted on the upper mold 3 is sequentially transferred from above the lower mold 4 is pierced and blanked, A laminated core manufacturing apparatus for forming and laminating sheets of laminae members (101A) (101) for cores and stator cores,

The laminating members 101A and 101 for the rotor and the stator are connected to the separating protrusion forming devices 30-1 and 30 and the laminating device 200A and 200 and the inner diameter heating devices 300A and 300 A single mold apparatus 10 for stacking, heating, bonding, and discharging;

A squeeze ring 201A (201) for a rotor core and a faulty core installed at the bottom of the blanking die (11A) (11) for blanking;

Heating means (202A) (202) provided outside each of the squeeze rings (201A) and (201); And

The rotary die 201 is provided with the squeeze ring 201A 201 and the heating means 202A 202 and is rotated together with the squeeze ring 201A 201 and the heating means 202A 202 by a predetermined pitch. (203A) and (203); And

1 and 31A provided on the upper mold 3 on the upper side of the vertically moving dies 32-1 and 32 and formed with a plurality of recessed portions 31'-1 and 31'and protruding portions 31A-1 and 31A, Dies 31-1 and 31;

And a laminated core including the laminated core and the laminated core.

In the present invention, it further includes a ring-shaped rotary electrode 205A (205) provided outside the rotary die 203A (203)

The rotating electrodes 205A and 205 are electrically connected to the heating means 202A and 202 so that the rotating electrodes 205A and 205 and the fixed electrodes 206A and 206 ) Are electrically connected to each other, electricity may be supplied to the heating means (202A, 202).

In the present invention, heat dissipation pads 208A and 208 for blocking heat generated by the heating units 202A and 202 are preferably provided under the blanking dies 11A and 11, respectively.

In the present invention, it is preferable that the laminated core is supported by the inner diameter heating devices 300A and 300 located below the rotating dies 203A and 203, and is taken out to the outside.

In the present invention, rotation driving members 207A and 207 provided on the outer peripheral surfaces of the rotating dies 203A and 203 may be further included.

According to the present invention, a rotor core and a stator core are successively punched out and machined in a single mold apparatus, and laminated members are stacked while a single sheet of laminated core is rotated by a predetermined pitch while heating each of the formed lamina members It is possible to eliminate lamination deviations of the laminated cores and to secure a good squareness and concentricity.

In addition, the present invention has the effect of enabling automatic separation of stacked core products one by one.

Further, the present invention has the effect of providing a heat-bonding type rotating laminated core manufacturing apparatus capable of directly heating an inner diameter side of a laminated core to secure a good quality of a laminated core.

Further, the present invention is intended to eliminate lamination deviation for laminated cores of laminated members which are successively processed through a single mold apparatus, and to increase the heat bonding strength of the laminated core by heating the laminated core inner surface Each of the core processing, the rotary bonding and the heat bonding process can be continuously processed by a single mold apparatus without the need for the respective molds for separately manufacturing each core, And the manufacturing cost is reduced.

1 is a cross-sectional view showing an example of a strip for manufacturing a lamina member to which the present invention is applied.
2 is a perspective view showing a lamina member for a rotor according to the present invention.
3 is a perspective view of a laminated core manufactured by laminating a lamina member for a rotor according to the present invention.
4 is a perspective view showing a lamina member for a stator core according to the present invention.
5 is a perspective view of a laminated core produced by laminating a lamina member for a stator core according to the present invention.
6 is a cross-sectional view showing a mold apparatus for manufacturing a heat-bonding rotating laminated core according to the present invention.
7 is a cross-sectional view showing a rotor laminating apparatus and an inner diameter heating apparatus of a mold apparatus for manufacturing a hot-pressed rotating laminated core according to the present invention.
8 is a cross-sectional view showing an example of the operation of a rotor laminating apparatus and an inner diameter heating apparatus of a mold apparatus for manufacturing a heat-bonding type rotating laminated core according to the present invention.
9 is a cross-sectional view showing a stator laminating apparatus and an inner diameter heating apparatus of a mold apparatus for manufacturing a heat-bonding type rotating laminated core according to the present invention.
10 is a cross-sectional view showing an example of the operation of a stator laminating apparatus and an inner diameter heating apparatus of a mold apparatus for manufacturing a heat-bonding type rotating laminated core according to the present invention.
11 is a conceptual diagram for explaining a process of automatically separating the stacked rotor and stator core product in the laminated core manufacturing mold apparatus according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing an example of a strip 100A for manufacturing laminated members 101A, 101 for a rotor core and a stator core according to the present invention.

1, a strip 100A applied to the present invention is formed by depositing a synthetic resin adhesive film 100A 'on the surface of a strip-shaped steel sheet 100-1 made of a thin plate or applying a synthetic resin coating layer for adhesion . In the present invention, it is preferable to use this type of strip 100A, but it is not necessarily limited to such a strip 100A. For example, a synthetic resin adhesive film 100A 'may be formed only on one side of the steel sheet 100-1, and an adhesive agent other than the adhesive film 100A' may be applied on the surface of the steel sheet 100-1 It is also acceptable to apply the form. Such an adhesive is applied to the surface of the steel sheet 100-1 in a state where the adhesive is not applied in the manufacturing mold apparatus 1 of the laminated core while the adhesive is applied in any one of the piercing, blanking or laminating processes But it is also possible to apply it to the form. Hereinafter, a steel strip 100-1 with an adhesive film 100A 'for convenience will be described as an example of the strip 100A.

2 and 4 are perspective views showing a laminar member 101A for a rotor core and a laminar member 101 for a stator core according to the present invention. Figs. 3 and 5 are cross- 1 is a perspective view of a laminated core 101A-1, 100 manufactured by stacking members 101A, 101. Fig.

Referring to FIGS. 2 and 4, a laminate member 101A (a stator core) for a stator core, which is a single piece of a laminated core manufactured by punching and blanking the strip 100A by a mold apparatus 1 101 are shown. A laminated core 101A-1 (100) manufactured by laminating the laminar members (101A) 101 by a predetermined number is disclosed in Figs. 3 and 5.

The laminated core 101A-1 100 is formed by laminating a synthetic resin film 100A 'deposited on the surface of the lamina members 101A and 101 or an adhesive by heat to form the laminar members 101A and 101, As shown in Fig.

6 is a cross-sectional view showing an apparatus 1 for manufacturing a heated adhesive rotary laminated core according to the present invention.

The synthetic resin adhesive film 100A 'supplied to the apparatus 1 shown in Fig. 6 is applied to the strip 100A in which the synthetic resin for vapor deposition or adhesion is coated, the rotation shaft hole 101A', the slot portion 101 ' (101A) 101 for a stator core are successively formed, and a single lamina member (101A, 101) for a stator core is successively formed, 101A) 101 are laminated by a predetermined number of sheets and thermally cured to produce a rotor and stator laminated core 101A-1 (100) of a motor.

Specifically, referring to FIG. 6, the laminated core manufacturing mold apparatus 1 according to the present invention includes a strip 100A 'on which synthetic resin adhesive films 100A' sequentially moving are coated with a synthetic resin for vapor deposition or adhesion, A press working method in which a continuous operation is carried out is applied. That is, the apparatus 1 according to the present invention is preferably a progressive mold apparatus and comprises an upper mold 3 and a lower mold 4.

Particularly, the present invention is characterized in that a piercing punching portion and a blanking punching portion for machining a rotor core are provided at the front end portion of a single mold apparatus 1, and a piercing punching portion and a blanking punching portion for machining the stator core are provided at the rear end, Thereby manufacturing the rotor and stator laminated cores 101A-1 and 100 of the motor.

The upper mold 3 is disposed on the upper side of the lower mold 4 and moves toward the lower mold 4 in the up and down direction v. The movement of the upper mold 3 is carried out as the upper mold 3 is mounted on the press machine and the press is driven. At the upper portion of the lower mold 4, the strip 100A moves along the advancing direction f.

The upper mold 3 includes piercing punches 5A, 6A, 7A, 8A, 5, 6, 7, 8 and blanking punches 9A, 9 for punching the strip 100A, A punch plate 17 and a punch holder 19 for supporting the punch plate 17 from above. 6 shows four piercing punches 5A, 6A, 7A and 8A and 5, 6, 7 and 8 at the front and rear ends of the apparatus, The shape and size of the core, and the like. In addition, the strip 100A is punched and blanked in order by a control program installed in a microprocessor (not shown).

The upper mold 3 is provided with a punch backing plate 18 for supporting the punch between the punch holder 19 and the punch plate 17 and a punch backing plate 18 for guiding the punch to move to the correct position, The stripper plate 20 may be provided to remove the strips 100A.

The lower mold 4 includes a die holder 16 mounted on the press machine and holding the entire center of the lower mold 4, a die plate 13 seated on the upper side of the die holder 16, And a die backing plate 15 positioned between the die plate 13 and the die plate 13 to support the pressure applied to the die plate 13.

In the lower mold 4, cylindrical blanking dies 11A, 11 having hollows formed at positions corresponding to the blanking punches 9A, 9 are mounted. The blanking dies 11A and 11 discharge the lower rotor laminar member 101A as a core sheet which is punched out by the blanking punches 9A and 9 and separated from the strip 100A, The discharged lamina members 101A and 101 are stacked while being passed through the squeeze rings 201A and 201 provided below the blanking dies 11A and 11 and are simultaneously heated Bonding between the lamina members 101A and 101 is performed by thermal curing of the adhesive film.

The rotor and stator lamina members 101A and 101 sequentially punched out from the blanking dies 11A and 11 are placed on the squeeze rings 201A and 201A of the laminating apparatus 200A and 200 below the blanking dies 11A and 11, And the other laminar members 101A and 101 are sequentially stacked thereon and pushed down to the bottom of the squeeze ring 201A and 201. [ The core in which a predetermined number of sheets are laminated becomes one product and is taken out from the bottom of the squeeze ring 201A (201) to the outside.

The manufacturing process of the laminated core using the mold making apparatus 1 according to the present invention includes a piercing process, a blanking process, and a laminating process for fabricating the rotor and the stator core.

In the piercing step, rotor molding in which a rotor shaft hole 101A 'except for the stator core forming portion is formed on the strip 100A, and rotor shaft forming, such as a slot 101', a tooth 101 ' The strip 100A is moved in the pitch direction by a pitch in the mold apparatus 1. The strip 100A is mounted on the upper mold 3 and moves vertically, The piercing process is performed by the punching processes 5A, 6A, 7A, 8A and 5, 6, 7 and 8. In the blanking process, the strip 100A is formed to form one lamina member 101A , The formed laminae members 101A and 101 are sequentially stacked in the subsequent lamination step.

The lamination step is preferably a step in which a laminating member laminated for thermal curing of an adhesive film or an adhesive together with the lamination is combined together. Further, the squeeze rings 201A and 201 are stacked while being rotated by a predetermined pitch every time one laminar member is stacked upon heating. The configuration for this will be described with reference to Figs. 7 to 10 below.

7 and 9 are sectional views showing a rotor and stator laminating apparatus 200A 200 and an inner diameter heating apparatus 300A 300 of a mold apparatus 1 for manufacturing a hot-pressed rotating laminated core according to the present invention. 8 and FIG. 10 are sectional views showing examples of the operation of the rotor and stator laminating apparatus 200A, 200 and the inner diameter heating apparatus 300A, 300 of the apparatus for manufacturing a heated adhesive rotary laminated core according to the present invention.

7 and 9, the rotor and stator laminating apparatuses 200A, 200 of the laminated core forming mold apparatus 1 according to the present invention are constructed in the same manner as the stator laminating apparatuses 200A, The ring 201A 201, the heating means 202A 202, the rotation die 203A 203, the rotary electrode 205A 205, the fixed electrode 206A 206 and the rotary drive member 207A 207).

The squeeze ring 201A 201 is a portion where the lamina members 101A and 101 formed in the blanking process are laminated and a plurality of lamina members 101A and 101 are stacked, (101) pushes the lower lamina member, and the laminate core moves downward. The squeeze ring 201A 201 is heated by the heating means 202A and 202 provided on the outer circumferential surface of the squeeze ring 201A. The squeeze ring 201A 201 is heated to maintain a constant temperature necessary for curing and the squeeze ring 201A 201 thus heated heats the laminated laminae 101A and 101, The adhesive film or the adhesive is thermally cured so that the laminar members 101A and 101 are well adhered to each other. The heating means 202A and 202 are preferably PTC ceramic heaters, but are not limited thereto. The position at which the heating means 202A and 202 are installed is also preferably the outer circumferential surface of the squeeze ring 201A and 201 but is not limited thereto and may be located inside the squeeze ring 201A or 201 Installation is possible.

The squeeze ring 201A 201 and the heating means 202A 202 are provided inside the rotary die 203A 203 so that when the rotary die 203A 203 is rotated by a predetermined pitch, ) 201 and the heating means 9202A) 202 rotate together with the rotating dies 203A, 203. A plurality of bearings (not shown) may be applied at the required positions to support the rotation of the rotating dies 203A,

The heating means 202A and 202 of the rotary die 203A and 203 must be heated while being rotated and the heating means 202A and 202 are rotated by rotating electrodes 202A and 202 electrically connected to the heating means 202A and 202, (205A) and (205) are provided on the outer peripheral surface of the rotary die 203A (203). The rotary electrodes 205A and 205 are continuous ring-shaped electrodes and rotate together with the rotary dies 203A and 203. The rotary electrodes 205A and 205 are fixed electrodes 206A separately disposed on the outer sides of the rotary dies 203A and 203, (Not shown). That is, the fixed electrodes 206A and 206 always maintain electrical connection with the rotating electrodes 205A and 205 even when the rotating dies 203A and 203 rotate, and the rotating dies 203A and 203 rotate So that the heating means 202A and 202 can be electrically heated.

Rotary driving members 207A and 207 are provided on the outer circumferential surfaces of the rotating dies 203A and 203. [ The rotation drive members 207A and 207 use members capable of transmitting driving forces of various types of driving means, that is, motors and the like, to the rotating dies 203A and 203 that can rotate the rotating dies 203A and 203 do. For example, gears, pulleys and the like can be applied. The rotation drive members 207A and 207 shown in Fig. 7 are pulleys, and a drive belt (not shown) connected to the drive shaft of a separately installed motor (not shown) is connected to the rotation drive members 207A and 207 So that the rotary dies 203A and 203 rotate while the rotary driving members 207A and 207 rotate. It is preferable that the rotation of the rotary dies 203A and 203 is performed by a predetermined constant pitch. For example, when one pitch is set to 60 degrees, one lamina member is blanked, and the lamina member laminated thereon is laminated while being rotated by 60 degrees. As this is repeated, laminated cores can be manufactured while laminating members continuously rotated by 60 degrees.

The heat generated by the heating means 202A and 202 is prevented from being conducted to the blanking die 11A and the die plate 13 by the heat radiation pads 208A ) 208 may be provided.

The laminating apparatuses 200A and 200 thus configured are capable of simultaneously heating and rotating by a predetermined pitch while laminating the lamina members.

On the other hand, the inner circumferential surface of the stator laminated core 100 has a delicate structure as compared with the outer circumferential surface of the laminated core 100 like the teeth 101 ". Therefore, if adhesion between the lamina members is not ensured, The rotor laminated core 101A-1 may be deflected upward or downward. Therefore, a method of directly heating the inner peripheral surface of the laminated core 100 may be required, The manufacturing apparatus 1 of the present invention can be applied to the laminating apparatus 200A in order to solve the problem that the laminating apparatus 200A can not adhere to the inner peripheral surface of the laminating member 101A, (300A) and (300) may be further provided at the lower portion of the inner diameter heating device (200).

The inner diameter heating apparatus 300A 300 of the present invention includes the lift blocks 301A and 301, the elevation means 302A and 302, the support pads 303A and 303 and the heating blocks 304A and 304 .

The elevating blocks 301A and 301 are operated to move up and down by the operation of the elevating means 302A and 302. [ The elevating means 302A and 302 can apply various known technical means to move the elevating blocks 301A and 301 such as a motor and a pneumatic cylinder up and down. The elevating blocks 301A and 301 are vertically movable toward the inner diameter side of the rotating die 203A and 203 by the elevating means 302A and 302. [

The support pads 303A and 303 are provided so as to be freely rotatable with respect to a rotation axis provided at the center thereof. A bearing (not shown) may be provided on the upper part of the lift blocks 301A and 301 to support this rotation. The support pads 303A and 303 may be omitted if rotation is not required.

The heating blocks 304A and 304 are heated by electric power supplied from the outside and positioned on the inner surface of the laminated cores 101A-1 and 100 to heat the inner surfaces of the laminated cores 101A-1 and 100 . Means for heating the heating blocks 304A, 304 may be a commonly used heating means such as a heating rod or the like. The outer diameter of the heating blocks 304A and 304 is set to be equal to or slightly smaller than the inner diameter of the laminated cores 101A-1 and 100 so that the heating blocks 304A and 304 are stacked on the laminated core 101A- (100), or slightly spaced from each other. The height of the heating blocks 304A and 304 is set to be equal to or slightly larger than the height of one laminated core 101A-1 and 100. [ By doing so, the inner surface of the laminated core 101A-1 (100) can be heated more effectively.

8 and 10, the elevating block 301 is raised by the operation of the elevating means 302A and 302 and is moved to the lower side of the squeeze ring 201A (201) Located. The heating blocks 304A and 304 are located on the inner diameters of the laminated cores 101A-1 and 100 laminated inside the squeeze ring 201A and 201 and the inner diameters of the laminated cores 101A-1 and 100 The laminated cores 101A-1 and 100 are pushed down while the laminated members 101A and 101 are laminated on the laminated core 101A-1 and the laminated core 101A-1 is separated from the laminated core 101A- As shown in Fig. 7, the lift blocks 301A and 301 are lowered, and the laminated cores 101A-1 and 100 are completed and taken out to the outside.

The support pads 303A and 303 may be configured to rotate together with the squeeze rings 201A and 201. The squeeze rings 201A and 201 need not necessarily be rotated 360 degrees. The support pads 303A and 303 can be moved up and down at any time by the elevating means 301A and 301. The stacking core 101A- This is because the inside diameter can be heated later.

The heat generating pads 306A and 306 are provided below the heating blocks 304A and 304 to prevent the heat generated in the heating blocks 304A and 304 from being conducted to the lift blocks 301A and 301 It may be installed.

In the meantime, it is preferable that the process of forming the separating protrusion of the laminated core is added between the piercing process and the blanking process. In the following description with reference to FIG. 6, The operation of separating the laminated cores 101A-1 and 100 is the same, so that the explanation will be omitted.

Referring again to FIG. 6, a protrusion forming device for separating a laminated core, which is provided in the upper and lower molds (3) and (4) between the piercing and blanking processes for performing a separating protrusion forming process for separating the laminated cores from each other, The molds 30-1 and 30 are provided with fixing dies 31-1 and 31 having recessed portions 31'-1 and 31'and protruding portions 31A-1 and 31A in the upper mold 3 Up and down moving dies 32-1 and 32 having protrusions 32'-1 and 32'and concave portions 32A-1 and 32A are provided on the lower mold 4 at positions corresponding to the upper and lower moving dies 32-1 and 32 ' And configure it. The laminated core separating protrusion forming apparatuses 30-1 and 30-2 according to the above-described structure are provided with a plurality of separating upward protrusions 100-2 and separating downward protrusions 100-2 for piercing and conveying strips 100A, The upper and lower moving dies 32-1 and 32 are lifted and lowered through the actuators 40A-1 and 40A such as hydraulic cylinders and the strips 100A 1 100 and the laminated cores 101A-1 and 100-1 as described later, as shown in FIG. 11, ) Can be automatically separated. The separation protrusions 100-2 and 100-2 'may be formed by operation of the upper mold 3 and the lower mold 4 without the actuators 40A-1 and 40A being operated. The fixing dies 31-1 and 31 may be moved up and down and the vertical moving dies 32-1 and 32 may be fixed. Therefore, the fixed dies 31-1, 31 and the vertically movable dies 32-1, 32 may be configured so as to be in contradiction with their names, despite their names. Furthermore, the number of protrusions and recesses can be variously changed as shown in Fig.

The process of forming a protrusion for separating a laminated core and the process of separating a laminated core between the piercing and blanking processes by the protrusion forming apparatuses 30-1 and 30 for separating the laminated core will be described in detail with reference to FIG.

11 is a conceptual diagram for explaining a process of automatically separating a laminated core product in a laminated core production apparatus according to the present invention.

When a laminated core 101A-1 (100) in which 15 sheets are laminated is manufactured by a driving program installed inside a control device for controlling the laminated core manufacturing apparatus according to the present invention, the 16th strip 100A ) 31 (31-1) 31 having recessed portions 31'-1, 31 'and protruding portions 31A-1, 31A after the piercing process with respect to the step (a) And the upper and lower moving dies 32-1 and 32 having the protruding portions 32'-1 and 32'and the concave portions 32A-1 and 32A are engaged with the strip 100A, A plurality of upward protrusions 100-2 and downward protrusions 100-2 'for separation are formed (step (b) of FIG. 11), and the protrusions 100-2 and 100-2' (Step (c) of FIG. 11) is performed by pulling out the outer shape of the core from the lamination members 100A and 100A to obtain the separation lamina members 101B and 101B '.

Fifteen lamina members 101A and 101 without laminated protrusions 100-2 and 100-2 'are already laminated through repeated blanking processes to form a laminated core, A laminating member for separation having the protrusions 100-2 and 100-2 'formed in the step (c) is laminated on the core (step (d) of FIG. 11).

Next, laminar members 101A and 101 without the protrusions 100-2 are successively further stacked on the upper portion of the separating laminar members 101B and 101B '(step (e) of Fig. 11). The separating laminating members 101B and 101B 'are continuously laminated on the laminating members 101A and 101B, and are pressed by the upper and lower laminating members by a pressing force. By this pressure, the shape of the separating upward projection 100-2 is deformed similarly to the downward fold, and the shape of the separating downward projection 100-2 'is deformed similarly to the upward fold. With this modification, the laminating members 101B and 101B 'having the projections 100-2 and 100-2' are automatically separated without being bonded to the upper and lower lamina members (Step (f) of FIG. An individual laminated core having fifteen pieces that exit the squeeze ring 201A (201) through the above steps can be obtained as a final product.

That is, when the laminated cores 101A-1 and 100 laminated inside the squeeze rings 201A and 201 are heated in the laminators 200A and 200, the respective synthetic resin adhesive films 100A 'are melted, Laminar members 101A and 101 are adhered to the upper and lower metal surfaces. The other 15 laminated cores 101A-1 (101A-1) (100B-1) are successively stacked on the upper surface of the separating laminar members 101B (101B ') located at the top of the first 15 laminated cores The upper and lower cores 100 and 100 'are deformed when the laminar members 101A and 101 are positioned below the lower laminar members 101A and 101, But they are separated without being adhered to each other by the deformed separation protrusions 100-2 and 100-2 '. Therefore, the laminated core 100 to which 15 sheets are bonded from the squeeze ring 201A (201) is discharged one by one.

It should be noted that the above description of the present invention is merely illustrative and not for the purpose of defining the scope of the present invention in order to understand the present invention. It is intended that the scope of the invention be defined by the claims appended hereto, and that all such modifications and variations are intended to be included within the scope of the present invention.

1: mold device 3: upper mold
4: lower mold 5, 6, 7, 8: piercing punch
9A, 9: blanking punch 11A, 11: blanking die
13: Die plate 15: Die backing plate
16: die holder 17: punch plate
18: Punch backing plate 19: Punch holder
20: stripper plate 30-1, 30: separating protrusion forming device
31-1, 31: fixed dies 32-1, 32: vertically moving die
100A, 100: laminated core 100A: strip
100A ': synthetic resin adhesive film 101A, 100: laminated core
101A-1, 101: Lamina member 200A, 200: Lamination device
201A, 201: a squeeze ring 202A, 202: a heating means
203A, 203: rotary die 205A, 205: rotary electrode
206A, 206: fixed electrodes 207A, 207: rotation driving member
208A, 306A, 208, 306: heat radiation pads 300A, 300: inner diameter heating device
301A, 301: elevating block 302A, 302: elevating means
303A, 303: support pad 304A, 304: heating block

Claims (5)

1. A laminated core manufacturing method for simultaneously forming a rotor core and a stator core on one strip,
The step of punching the rotor core
A first piercing step of forming the shape of the shaft hole on the strip;
A first blanking step of forming a lamina member by tapping the strip after the first piercing step; And
A first laminating step of laminating a plurality of lamina members;
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The step of striking the stator core
A second piercing step of forming a shape of the slot portion and the teeth on the strip;
A blanking step of forming a lamina member by punching the strip after the second piercing step; And
A second laminating step of laminating a plurality of lamina members;
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Wherein the first and second laminating processes heat the laminar members stacked in the first and second laminating processes and are stacked while rotating by a predetermined pitch every time one lamina member is stacked,
Wherein the laminar member is laminated after a predetermined number of the laminar members are stacked, and a laminar member for separation is formed and stacked on the laminar member for separation. Way. A strip 100A consisting of an upper mold 3 and a lower mold 4 and in which a punch mounted on the upper mold 3 is sequentially conveyed from above the lower mold 4 is pierced and blanked, And a lamina member (101A) (101) for a stator are formed and stacked,
The laminating members 101A and 101 for the rotor and the stator are connected to the separating protrusion forming devices 30-1 and 30 and the laminating device 200A and 200 and the inner diameter heating devices 300A and 300 A single mold apparatus 10 for stacking, heating, bonding, and discharging;
A squeeze ring 201A (201) of a rotor and stator laminating apparatus provided below a blanking die (11A) (11) for blanking forming the laminating apparatus (200A) (200);
Heating means (202A) (202) provided outside the squeeze ring (201A) (201);
The rotary die 201 is provided with the squeeze ring 201A 201 and the heating means 202A 202 and is rotated together with the squeeze ring 201A 201 and the heating means 202A 202 by a predetermined pitch. (203A) and (203);
A plurality of protruding portions 32'-1 and 32'and a concave portion 32A constituting the separating protrusion forming devices 30-1 and 30 provided on one side of the blanking die 11A A vertically moving die 32 formed; And
1 and 31A and 31A-1 and 31A provided on the upper mold 3 on the upper side of the up-and-down moving dies 31-1 and 31, respectively, and formed with a plurality of recessed portions 31'-1 and 31'and protruding portions 31a-1 and 31A. Dies 31-1 and 31;
Wherein the laminated core includes a plurality of laminated cores, and the plurality of laminated cores are separated from each other. The plasma display device according to claim 2, further comprising a ring-shaped rotary electrode (205A) (205) provided outside the rotary die (203A) (203)
The rotating electrodes 205A and 205 are electrically connected to the heating means 202A and 202 so that the rotating electrodes 205A and 205 and the fixed electrodes 206A and 206 Is electrically connected to the heating means (202A, 202), electricity is supplied to the heating means (202A, 202). 3. The apparatus according to claim 2, wherein heat dissipation pads (208A, 208) for blocking heat generated by the heating means (202A, 202) are provided under the blanking die (11A, 11) An apparatus for manufacturing a laminated core of thermally adhered rotating laminate capable of automatically separating laminated cores. 3. The laminated core according to claim 2, wherein the laminated core is supported by the inner diameter heating apparatus (300A, 300) located below the rotating die (203A, 203) A device for manufacturing a heated bonded rotating laminated core capable of automatic separation.

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