WO2016035959A1 - Adhesive-type laminated core member preparation apparatus and temperature controlling method - Google Patents

Abstract

Disclosed is an adhesive-type laminated core member preparation apparatus comprising: an adhesive application unit for applying an adhesive on a material which is being consecutively transferred; a blanking unit for forming lamina members by blanking the material; a laminate unit for integrating the lamina members which are sequentially being laminated in a laminate hole by means of the blanking of the material; a cooling unit for cooling the laminate unit and the periphery of the laminate unit; and a temperature control unit for controlling the cooling unit, wherein the lamina members are adhered between layers such that a laminated core member is prepared. The blanking unit comprises a die, which is being laminated on the laminate unit, and a punch which faces the die. The laminate unit comprises an adhesive curing device for integrating the lamina members, which pass through the laminate hole, by curing the adhesives that exist between the layers of the lamina members. The temperature control unit controls the cooling unit such that the temperature of the die is maintained below a predetermined temperature. The present invention, according to an embodiment, enables limiting of size variation of lamina members by preventing overheating of a die and enhances the alignment lamination and linear mobility of the lamina members.

Description

Adhesive Laminated Core Member Manufacturing Apparatus and Temperature Control Method

The present invention relates to a core member manufacturing apparatus used for manufacturing a core such as a motor or a generator, and more particularly, to an adhesive laminated core member manufacturing apparatus for manufacturing a laminated core member for a motor or the like by laminating the lamina members. And it relates to a temperature control method for this.

In general, a lamination core manufactured by laminating and integrating lamina members is used as a rotor or a stator of a generator or a motor, and a method of manufacturing the lamination core, that is, laminating and integrating the lamina members. As a method of manufacturing a laminated core to be fixed by using a tab fixing method using an interlock tab, a welding fixing method using welding, for example, laser welding, a rivet fixing method, and the like are known.

The tab fixing method is disclosed as a manufacturing technology of a laminated core member in patent documents such as Korean Patent Publication Nos. 10-2008-0067426 and 10-2008-0067428, and the method of manufacturing the laminated core member is iron loss (Iron). Loss) problem, in particular, the tab fixing method is difficult to embossing due to the trend of thinning of the material, that is, steel sheet, showing a limitation as a manufacturing technology of the laminated core. The above-mentioned Unexamined Patent Publication and the following patent document disclose laminated core members of various types and shapes.

In addition, recently, an adhesive fixing method of integrating and integrating lamina members constituting the laminated core member with an adhesive has been proposed, and Korean Patent Application Laid-Open No. 10-1996-003021 and Japanese Patent Laid-Open No. 5-304037. The adhesive fixing method is disclosed.

Referring to Japanese Patent Laid-Open No. 5-304037 of the above-mentioned patent document, the raw material for manufacturing the motor core, that is, the steel sheet, is supplied to the first press molding machine and the second press molding machine by a transfer roller, and passes through the first press molding machine. The adhesive is applied to the steel sheet by means of an application roller and a nozzle before.

The core material sequentially stacked on the first press molding machine and the second press molding machine by blanking of the material is integrated by the adhesive, thereby producing an adhesive laminated core.

According to the conventional adhesive fixing method, that is, the adhesive laminated core manufacturing method described above, the cost can be reduced compared to laser welding and the steel sheet can cope with thinning, but the size of the core material is not uniformly managed due to the heat generated from the heating heater, When the ash moves down while being integrated inside the lamination barrel by the heating heater, the lamination core member is damaged by the drop impact and / or other lamination core member falling behind by falling down by the own weight, and the lamination core member There is a problem that their arrangement is disordered.

More specifically, the components forming the peripheral parts of the heating heater, for example, a mold or a stacked barrel in which the heating heater is installed, together with the core material passing through the heating heater, may be deformed (thermally expanded) or damaged by heat. Lack of the core material due to the change in straightness and deterioration of the area of the product (ie, the barrel) through which the core material passes, resulting in misalignment and product defects of the core material, and the die for blanking is thermally expanded by the exothermic heater, thereby forming the core material. B problem arises that the size of the member is not managed uniformly. In addition, since the components of the press molding machine and the nozzle application roller are separately separated and operate independently, precise control is required for adhesive application and blanking.

And, in the conventional adhesive laminated core manufacturing apparatus, there is a risk of leakage of the adhesive and surrounding contamination at the exit of the nozzle for applying the adhesive, the adhesive is leaked to the outside of the nozzle and the adhesive is squeezed on the surface of the nozzle, thereby There are problems such as clogging and contamination of the outlet, which may be more problematic in the quantitative accuracy of the adhesive and the shortening of the curing time.

In addition, the conventional adhesive laminated core manufacturing apparatus has a difficulty in applying a certain amount of adhesive to the surface of the steel sheet at regular intervals in conjunction with the blanking process, and in order to accurately control the adhesive ejection amount and the nozzle operation time (adhesive application timing) Fine control of the adhesive supply pressure, ie the adhesive pressure inside the nozzle, is required, and if the adhesive application process is not carried out properly, the layers of the laminated core are separated and lead to product defects. Problems may occur.

The present invention has been proposed to solve the above-mentioned problems, and can precisely manage the size and shape of the lamina members stacked in the laminate hole, and can realize the arrangement lamination and the linear movement of the lamina members. An object of the present invention is to provide an adhesive laminated core member manufacturing apparatus and a temperature control method therefor.

In order to achieve the above object, the present invention provides an adhesive applying unit for applying an adhesive to a continuously conveyed material, a blanking unit for blanking the material to form lamina members, and a blanking of the material. Including a laminate unit (Laminate Unit) to integrate the lamina members sequentially stacked in a laminate hole by a cooling unit, a cooling unit for cooling the periphery of the laminate unit and the laminate unit, and a temperature control unit for controlling the cooling unit It is configured to provide an adhesive laminated core member manufacturing apparatus for producing a laminated core member by laminating the lamina members interlayer. The blanking unit includes a die stacked on the lymate unit and a punch facing the die; The laminate unit comprises an adhesive curing machine for curing the adhesive present between the layers of the lamina members to integrate the lamina members passing through the laminate holes; The temperature control unit controls the cooling unit so that the temperature of the die is kept below a preset temperature.

The temperature control unit is; A first temperature sensor for sensing a temperature of the laminate unit or an ambient temperature of the laminate unit, a second temperature sensor for sensing a temperature of the die or an ambient temperature of the die, and the first temperature sensor and a second temperature sensor It is configured to include a temperature monitor for receiving the temperature from.

The laminate unit is provided between the adhesive curing machine and the die for alignment of lamina members sequentially formed by the blanking of the material and the side pressure is applied to the lamina members moving to the adhesive curing machine. A squeeze applied thereto to clamp the lamina members, and a pinch provided below the adhesive curing machine to prevent the laminated core member from falling down to apply side pressure to the laminated core member; The cooling unit includes a first cooling furnace provided at the outer side of the adhesive curing machine, a second cooling furnace for cooling the squeeze, and a third cooling furnace provided at the outer side of the pinch.

The laminate unit; It may further include a blocking material provided in the area between the adhesive curing machine and the squeeze for thermal disconnection of the adhesive curing machine and the squeeze.

And, the laminate unit; It may further include a barrier provided in the area between the adhesive curer and the heater and the pinch for thermal disconnection of the adhesive curer and the pinch.

The die is provided together with the laminate unit in a lower mold of the adhesive laminated core member manufacturing apparatus; The punch is provided in the upper mold facing the lower mold.

According to another aspect of the present invention, there is provided an automatic temperature control method for an adhesive laminated core member, comprising: a temperature monitoring step of real time sensing a temperature of a die or an ambient temperature of a die; And when the temperature of the die or the ambient temperature of the die is a predetermined temperature or more, it provides a temperature control method of the adhesive laminated core member comprising a cooling step of forcibly flowing a cooling fluid by operating the cooling unit.

Adhesive laminated core member manufacturing apparatus and adhesive coating unit according to the present invention has the following effects.

First, according to an embodiment of the present invention, it is possible to limit the size and shape change of the lamina members by preventing overheating of the die, and the precision of the laminate unit integrating the lamina members, that is, the laminate hole passing through the lamina members ( Straightness of the Lamiante Hole can be stably maintained, and the lamina members can be laminated (alignedly stacked) in a well-aligned state to improve the straight mobility of the lamina members. It is prevented and product quality and standard management are easy.

Secondly, according to an embodiment of the present invention, since the stacking core members can be stably taken out, damage to the stacking core members due to dropping and dropping impact of the product due to the release of the side pressure can be prevented, and further, the stacking core members Alignment extraction is possible.

Third, according to an embodiment of the present invention, even if the size of the laminated core members is changed due to thermal expansion inside the laminate unit, stable side pressure may be applied to the side surfaces of the laminated core members, thereby causing a laminate hole (laminated hole; Gradual movement of the laminated core members may be induced inside the lamiante hole.

Fourth, according to an embodiment of the present invention, the phenomenon that the adhesive outlet (nozzle outlet) and the surroundings of the outlet by the adhesive is contaminated can be minimized or prevented, and the coating area, application amount and application position of the adhesive can be managed at a uniform level. And the consumption of adhesive can be reduced. More specifically, since the adhesive outlet is opened only when the material and the adhesive applying unit are in close proximity, the discharge timing and the adhesive coating amount of the adhesive can be controlled constantly.

Fifth, according to the embodiment of the present invention, the adhesive outlet and the passage (channel) can be prevented from clogging due to the curing and narrowing of the adhesive, and the poor adhesion between the layers of the laminated core member can be prevented.

Sixth, according to an embodiment of the present invention, since the punch blanking the material and the pressing member for pressing the material in the direction of the adhesive applicator are mounted on the upper mold and raised at the same time, the blanking process and the above due to the synchronized operation of the punch and the pressing member The adhesive application process, which is the entire process of the blanking process, can be performed at the same time, the adhesive application timing can be maintained stably and accurately, and the lamina members can be sequentially stacked and moved by the blanking so that the lamination and alignment of the lamina members can be performed. It can be performed easily.

The features and advantages of the present invention may be better understood with reference to the following drawings in conjunction with the following detailed description of embodiments of the invention, of which:

1 is a longitudinal sectional view schematically showing the structure of the adhesive laminated core member manufacturing apparatus according to an embodiment of the present invention by cutting in the conveying direction of the material;

Figure 2 is a view showing an embodiment of the adhesive applying unit as a longitudinal cross-sectional view along the line "A-A" in Figure 1;

3 is a cross-sectional view schematically showing an arrangement of a laminate unit and a die according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view illustrating a process of integrating lamina members in an interior (laminate hole) of the laminate unit shown in FIG. 3;

5 is a plan view showing various examples of the core member;

6 is an exploded perspective view showing an example of a high frequency heater and a guide of the laminate unit according to the present invention;

7 is a plan view illustrating a state in which the high frequency heater and the guide illustrated in FIG. 6 are assembled;

8 is a cross-sectional view of FIG. 6;

9 is an exploded perspective view showing another example of the high frequency heater and the guide of the laminate unit according to the present invention;

10 is a plan view schematically showing one embodiment of a pinch applicable to a laminate unit according to the present invention;

FIG. 11 is a longitudinal sectional view taken along the line “B-B” of FIG. 1;

12 is an exploded cross-sectional view of an adhesive applicator and a valve of the adhesive applying unit shown in FIG. 11;

13 is a longitudinal cross-sectional view showing the operation of the adhesive applying unit shown in FIG.

14 is a cross-sectional view showing an embodiment of a nozzle elevating mechanism for elevating the adhesive coating unit of the adhesive laminated core member manufacturing apparatus according to the present invention; And

15 is a view showing another embodiment of the adhesive applying unit of the adhesive laminated core member manufacturing apparatus according to the present invention; And

16 is a plan view showing an example of an adhesive coating process and a blanking process by the adhesive laminated core member manufacturing apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention, in which the object of the present invention can be specifically realized, are described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted below.

The present invention provides an adhesive lamination for producing a lamination core member for a motor core by blanking a strip-shaped material continuously conveyed to form lamina members having a predetermined shape, and bonding and integrating the layers of the lamina members. It relates to a temperature control method for automatically controlling the temperature of the core member manufacturing apparatus and the adhesive laminated core member.

In other words, one embodiment of the present invention, the laminated core member is formed by integrating an adhesive applying unit for applying an adhesive to the material, a blanking unit for blanking the material, and lamina members laminated by the blanking of the material Adhesive laminated core member manufacturing apparatus comprising a laminate unit (laminate unit), a cooling unit for cooling the laminate unit, and a temperature control unit for controlling the cooling unit and a temperature control method therefor will be.

First, referring to Figures 1 to 5, an embodiment of an adhesive laminate core member manufacturing laminate unit and an adhesive laminate core member manufacturing apparatus having the same according to an embodiment of the present invention will be described.

1 is a longitudinal cross-sectional view schematically showing the structure of the adhesive laminated core member manufacturing apparatus according to an embodiment of the present invention by cutting in the conveying direction of the material, Figure 2 is shown in FIG. Figure 3 is a view showing an embodiment of the adhesive coating unit as a longitudinal section along the line "AA", Figure 3 is a cross-sectional view schematically showing the arrangement of the laminate unit and the die according to an embodiment of the present invention, Figure 4 3 is a cross-sectional view illustrating a process of integrating lamina members in the interior (laminate hole) of the laminate unit shown in FIG. 3, and FIG. 5 is a plan view illustrating various examples of the core member.

1 to 5, the adhesive laminated core member manufacturing apparatus according to the present embodiment, the adhesive applying unit 100 for applying an adhesive to the material (S) continuously transported, and blanking the material (S) Blanking unit 200 to form lamina members L, a laminate unit 300 for integrating the lamina members L in a stacked state, and a cooling unit for cooling the laminate unit and its surroundings. And a temperature control unit 500 for controlling the cooling unit 400.

The laminate unit 300 is a lamina member (L) sequentially formed by the blanking unit 200 of the material (S), for example, motor steel plate for manufacturing the motor core (hereinafter referred to as "metal strip") that is continuously transported The lamina members L are integrated into a single mass by curing the adhesive present between the layers of the multilayer lamina members L.

In more detail, the blanking unit 200 includes a punch 210 and a die 220, and the die 220 is stacked on the laminate unit 300 to face the punch 210. do.

In addition, the laminate unit 300 includes an adhesive curing machine 310 for curing an interlayer adhesive of lamina members L passing through a laminate hole 300a, that is, a lamination hole. The laminate hole 300a is a space in which the lamina members L are stacked in a vertical direction and continuously move by one pitch, and are integrally formed. In this embodiment, the laminate hole 300a penetrates the laminate unit 300 in the vertical direction. do.

The adhesive curing machine 310 is a device for thermosetting the adhesive existing between the layers of the lamina members (L), in this embodiment, by curing the adhesive by high frequency induction heating so that the adhesive curing speed is increased, that is, the heated object It consists of a high frequency induction heater which integrates the lamina members (L). Since the high frequency induction heating itself is well known, further description thereof is omitted, and the present invention provides a method of most effectively curing the adhesive applied between the layers of lamina members and minimizing the thermal effect on the peripheral materials. High frequency induction heating is started.

Next, the temperature control unit 500 controls the cooling unit 400 so that the temperature of the die 220 is maintained below a predetermined temperature. That is, the temperature control unit 500 controls the operation of the cooling unit 400, so that the peripheral components of the adhesive curing machine 310 by the adhesive curing machine 310, for example, a mold (lower mold) 10 to be described later. And overheating of components such as die 220.

The temperature control unit 500 includes a plurality of temperature sensors 511 and 512 and a temperature monitor 520 that receives temperature values from the temperature sensors. The temperature sensors include a first temperature sensor 511 and a second temperature sensor 512.

The first temperature sensor 511 detects a temperature of the laminate unit 300 or an ambient temperature thereof. The second temperature sensor 512 detects the temperature of the die 220 or the ambient temperature thereof.

In the present embodiment, the laminate unit 300 further includes a squeeze 320, that is, an alignment squeeze device (Squeezer) provided between the adhesive curing machine 310 and the die 220. The squeeze 320 aligns the lamina members by applying pressure (side pressure, tightening force) to the sides of the lamina members L stacked in the laminate hole 300a by blanking a metal strip.

In more detail, the squeeze 320 clamps the lamina members L by applying pressure (side pressure) to the side surfaces of the lamina members L moving downward from the upper side of the adhesive curing machine 310, As a result, the lamina members L pass through a passage inside the adhesive curing machine in a state of being properly stacked / aligned.

The squeeze 320 is applied to the lamina members (L) so that the lamina members (L) sequentially formed by the blanking of the material (S) is laminated in a state aligned in the interior of the squeeze As a configuration, the lamina members L are pressed into the squeeze 320 while sequentially entering the inside of the squeeze 320.

Accordingly, the lamina members L are stacked in the state of being aligned by the squeeze inside the squeeze 320 and enter the adhesive curing machine, that is, the high frequency heater 310, through the squeeze 320. The squeeze 320 may be made of a special steel, for example, SKD-11.

In addition, the inside of the adhesive curing machine 310 is provided with a guide 330 for guiding the movement of the lamina member (L), the guide 330 than the non-conductive material so as not to be affected by the high frequency induction heating Specifically, it is preferable to have an engineering ceramic material.

In addition, the laminate unit 300 in the present embodiment, the pinch 340 provided on the lower side of the adhesive curing machine 310, that is configured to further include a device (Pincher) to hold the laminated core member (C) from the side do.

The pinch 340 is applied to the laminated core member (C) formed by the integration of the lamina member (L), that is, the product discharged downward from the adhesive curing machine (310), the laminated core member Prevent sudden drop of (C).

In the temperature control unit 500 of the present embodiment, the first temperature sensor 511 includes at least one sensor of the curing machine sensor 511a and the squeeze sensor 511b. The curing machine sensor 511a is provided in an outer region (circumference region) of the adhesive curing machine 310 to detect an ambient temperature of the adhesive curing machine, and the squeeze sensor 511b is an outer region (circumference of the squeeze 320). Area) to detect the ambient temperature of the squeeze 320.

The temperature monitor 520 is provided with a temperature indicator 521 for displaying the temperature of each part.

On the other hand, the cooling unit 400, the first cooling furnace 410 provided on the outside of the adhesive curing machine 310, the second cooling furnace 420 for cooling the squeeze 320, and the pinch ( It is configured to include a third cooling path 430 provided on the outside of the 340. Cooling fluid flows along the first cooling path 410 to the third cooling path 430, and the cooling fluid absorbs ambient heat while forcibly flowing by the fluid transporter 440, for example, a fluid circulator.

In detail, the first cooling furnace 410 cools the adhesive curing machine 310 and the peripheral region of the first cooling furnace, and the second cooling furnace 420 is the squeeze 320 and the squeeze. Cooling the peripheral region of the, the third cooling path 430 cools the peripheral region of the pinch 340 and the third cooling path (430). And the operation of the fluid transporter 440 is controlled by a temperature controller (not shown) of the temperature monitor 520.

Therefore, the cooling unit 400 prevents the laminate unit 300 and the peripheral parts of the laminate unit, that is, the lower mold 10 and the die 220, from being overheated by heat conduction and high frequency.

In the present embodiment, the first cooling furnace 410 is a structure surrounding the adhesive curing machine 310, the second cooling furnace 420 is formed on the squeeze 320, the third cooling furnace 430 is a structure surrounding the pinch 340, but is not limited thereto. The adhesive curing machine 310 is disposed inside the cooling block 410a having the first cooling path 410, and the adhesive curing machine 310 is surrounded by the cooling block 410a.

In addition, the blanking unit 200 blanks the metal strip S continuously passing at a predetermined pitch between the punch 210 and the die 220 to sequentially form a lamina member L having a predetermined shape. do.

In the present embodiment, the lamina member L refers to a single layer of thin sheet manufactured by blanking the material S, that is, the metal strip. In addition, the laminated core member (C) is a configuration forming a stator or a rotor of the motor, for example, a member constituting at least a portion of the core (Core), for example, a core wing wound coil, etc., FIG. A plan view showing various examples of the adhesive laminated core member, which may be manufactured in various outer shapes according to the core manufacturing and design conditions.

The die 220 has a die hole having a predetermined shape opposite to the punch 210, and the lamina member L is injected into the inner hole of the die 220, that is, the die hole at the same time as the blanking. . In FIG. 1, although the blanking area (the part penetrated by the blanking) of the metal strip S is larger than the lamina member L, the shape and size of the blanking area and the lamina member are substantially the same. As is apparent in the art, a lamina member having the same shape and size as that of the die 220 is formed.

When the die 220 is overheated by the heat conduction with the laminate unit 300, the size of the die hole is changed, and a variation occurs in the size of the lamina members L manufactured by the blanking. . Therefore, in the manner in which the adhesive is hardened (heat cured) by heat as in the present embodiment, it is also important to minimize thermal expansion of the laminate unit 300 itself for alignment and straight movement of the lamina members. It is also very important to prevent overheating of the die 220 for size management of L), and in the present embodiment, the cooling unit 400 cools the components of the laminate unit 300 and its surrounding area, The die 220 is prevented from overheating by thermal conduction.

In the present embodiment, the punch 210 is provided in the upper frame 20a more specifically than the upper mold 20, and the die 220 is provided in the die frame 10b more specifically than the lower mold 10. . In addition, the blanking unit 200 is located downstream from the adhesive coating unit 100 for the blanking process, which is a post-process of the adhesive coating process, based on the transfer direction of the metal strip S.

In addition, the punch 210 is provided in the upper frame 20a together with the pressing member 130 for pressing the metal strip toward the lower mold, and moves up and down together with the upper mold 20. Therefore, when the blanking process is performed on the metal strip S by the blanking unit 200, the adhesive application process by the adhesive application unit 100 is simultaneously performed at an upstream spaced by a predetermined pitch.

As described above, the blanking unit 200 blanks the material, and the laminate unit 300 is an apparatus for integrating lamina members L which are sequentially manufactured by blanking, and the lower side of the die 220. The laminate unit 300 is integrally formed while passing through the lamina members L sequentially stacked and forming a lamination hole, that is, the above-described laminate hole 300a.

In more detail, the squeeze 320 is provided below the die 220 to align the lamina members L passing downward toward the adhesive curing machine 310 and the squeeze 320 of the squeeze 320. The adhesive curing machine 310 is provided on the lower side to integrate the lamina members (L) through the curing of the adhesive.

The squeeze 320 supports the side surfaces of the lamina members L for the sequential lamination of the lamina members and prevents misalignment or misalignment of the lamina members L. The die 220 It may be composed of a squeeze ring (Squeeze Ring) that surrounds the entire shape of the inner, that is, the same shape as the die hole, that is, the lamina member. Therefore, when the outer circumference of the lamina member (L) is circular, the inner hole of the squeeze ring is circular, and when the lamina member is 'T' shaped, the squeeze ring also has a 'T' hole. It may be configured in a shape.

The squeeze 320 may be a ring type or a barrel type surrounding the outer sides of the lamina members (L), but a pin (Pin) or the split support the outer portion of the lamina members (L) in a plurality of positions or It may also be a block structure. In addition, the lamina members (L) are pushed by the punch 210 in a state of being pressed into the inside of the squeeze (320) so that one pitch of the squeeze (320) per one press stroke (thickness of a single lamina member) Pass through the unit, a hole formed in the squeeze 320, that is, a squeeze hole becomes part of the laminate hole.

In the present embodiment, the guide 330 described above is provided inside the adhesive curing machine 310. The guide 330 induces the alignment and straight passage of the heated object (the straight out of the product) located in the adhesive curing machine 310, that is, the high frequency heater, and the guide 330 is an example as described above. Guides made of engineering ceramics, ie non-conductive materials, are applied.

And the upper side of the adhesive curing machine 310 is preferably provided with a blocking material 350 for thermal disconnection between the squeeze 320 and the adhesive curing machine (310). The blocking member 350 cuts off between the squeeze 320 and the high frequency heater 310, so that the peripheral material other than the inner region (adhesive curing region) of the high frequency heater 310, in particular the squeeze 320 Minimizes or prevents heat generation by high frequency induction. As an example of the blocking member 350, a shielding material of beryllium copper material may be applied.

On the other hand, the pinch 340, by applying a side pressure to the product (laminated hardened core member) passing through the inside to help the alignment of the product (C) to move down in the adhesive curing machine 310 and the product, that is the core member (C) To prevent a sudden drop.

The pinch 340 may include a pinch block 341 and an elastic member, ie, a pinch spring 342, which elastically supports the pinch block 341, and a product, ie, a core member C, coming out of the adhesive curing machine 310. ), The core member (C) is prevented from falling rapidly to the bottom of the laminate hole (300a) after passing through the adhesive curing machine (310).

In addition, the above-described blocking material 350 may be provided between the adhesive curing machine 310 and the pinch 340, and the third cooling path 430 is formed on the outer circumference of the pinch 340.

The die 220, the squeeze 320, the guide 330, and the pinch 340 are disposed coaxially to the lower mold 10 to form a part of the above-described laminate hole 300a, respectively, and the laminate hole ( At the bottom of 300a), a take-off support 360 supporting the bottom of the product (laminated core member C) discharged through the lamination and curing process is provided to be elevated.

The ejection support 360 descends while the core member C is seated. When the ejection support 360 reaches the bottom of the laminate hole (lamination barrel), the ejection cylinder 13 is connected to the laminated core member ( Push C) into the draw passage to help take out the product.

In FIG. 4, a gap is formed between the lower core member C and the immediately above core member, but is actually stacked in contact with the core member C to continuously pass through the laminate hole 300a. And the side of the lamina member (L) and the side of the laminated core member (C) is in close contact with the squeeze 320 and the pinch 340 more specifically than the inner surface of the laminate hole (300a).

6 to 8, the adhesive curing machine 310, that is, the high frequency heater includes a coil 311 constituting a passage of a high frequency current, and the coil 311 includes a curing hole for receiving the lamina members. It is wound around 310a. More specifically, the coil 311 has a tubular coil, ie, a coil conduit, spirally embedded in a coil block 312, and terminals 311a for applying a high frequency current to both ends of the coil conduit. 311b is provided to be exposed to the outside of the coil block 312.

The above-mentioned hardening hole 310a is formed in the coil block 312 through the vertical direction. The cooling fluid, for example, the cooling water, is supplied to the coil 311, that is, the coil conduit. In addition, the above-described guide 330 is disposed in the hardening hole 310a.

The guide 330 may be an integrated block structure or a split structure having a hollow interior such as a ring type or a barrel type. The guide 330 shown in FIG. 6 is a hollow cylindrical block, and is an applicable structure when the outer shape of the lamina member is circular, for example, when the shape is shown in FIG. When the lamina member is in the "T" shape as shown in (c), the inner hole, that is, the guide hole of the guide 330 may be in the "T" shape.

In addition, the guide 330 may be formed between the inner circumferential surface of the curing hole 310a and the outer circumferential surface of the guide 330 in consideration of the heated object and thermal expansion of the guide 330. ) May be manufactured in a smaller size than the curing hole 310a.

Of course, as illustrated in FIG. 9, the guide may include a plurality of guide pins 331 which are dividedly disposed along an inner profile of the hardening hole 310a, for example, an circumferential direction of an inner circumferential surface thereof. It may be.

Next, referring to FIG. 10, the pinch block 341 may be spaced apart from each other along the circumference of the laminated core member C in the laminate hole 300a, for example, the laminate. A plurality of holes are installed in the hole 300a at predetermined angle units. The pinch 340 may be both a moving type and a fixed type fixed in place, but a moving type is preferable in consideration of thermal expansion. If the pinch spring 342 is omitted in FIG. 10 and the pinch block 341 is fixed in place so that the pinch block 341 does not move, an example of the fixed type pinch is provided.

The pinch block 341 is disposed at a plurality of positions spaced apart along the circumference of the core member C, and is supported by the pinch spring 342, that is, an elastic member, so that the elastic side pressure is applied to the core member C. Add. Therefore, the pinch 340 according to the present embodiment may be a moving type, and the pinch block may be a fixed type pinch when the pinch block is fixed to the laminate hole 300a without change in position. Of course, the squeeze 320 may also be of a moving type, such as the pinch instead of the fixed type described above, for example, a ring structure.

Hereinafter, an embodiment of an adhesive coating unit applicable to the core member manufacturing apparatus according to the present invention will be described with reference to FIGS. 11 to 13, but examples of the adhesive coating unit applicable to the present invention are not limited to the structure described below. Of course.

11 to 13, the adhesive applying unit 100 applies an adhesive to the metal strip S at a predetermined timing at a predetermined position. In the present embodiment, when the metal strip (S) and the adhesive applying unit 100 are close to each other, the adhesive coating to the metal strip (S) is performed.

More specifically, the adhesive applying unit 100 is selectively opened at a predetermined position to apply the adhesive to the metal strip. As described above, the blanking unit 200 sequentially blanks the metal strip S, for example, an electrical steel sheet, to sequentially form lamina members having a predetermined shape. The adhesive applying unit 100 is provided upstream of the blanking unit 200 based on the transfer direction of the metal strip S, and performs an adhesive applying process which is a whole process of the blanking process. The lamina members formed by the blanking unit 200 are sequentially stacked on the laminate unit 300 and discharged through an integration process.

The adhesive applying unit 100 is selectively opened at a predetermined position at a predetermined timing, i.e., at a predetermined period, to apply an adhesive to a surface of the metal strip S, for example, a bottom surface of the metal strip S. 110, and a valve 120 for opening and closing the outlet of the adhesive applicator 110 for the application of the adhesive.

In this embodiment, the adhesive applying unit 100 is pressed by the metal strip (S) is opened, the nozzle (Nozzle) type to transfer the adhesive in the form of dots (Dot) on the surface of the metal strip (S). In more detail, the adhesive applicator 110 is configured as a nozzle body including a nozzle passage 111 filled with adhesive and an outlet channel 112 forming an outlet of the adhesive applicator 110.

Here, the adhesive applicator 110 is a nozzle body (hereinafter the same reference numerals as the 'applicator applicator' is applied), the outlet channel 112 is the metal strip (S) to form an outlet of the nozzle passage (111). ) And the valve 120 is opened, the adhesive is accommodated at a predetermined pressure inside the adhesive accommodating chamber 141 (see FIG. 13) through the outlet channel 112 when the valve 120 is opened. It is applied to the surface of (S).

The valve 120 blocks the outlet channel 112 and opens the outlet channel 112, that is, the nozzle outlet when the metal strip S and the outlet channel 112 are close to each other. Only at the adhesive application timing is the nozzle outlet (hereinafter the same reference numeral as the 'outlet channel' applied) open.

The valve 120 includes a valve plug 121 that is inserted into the outlet channel 112 so as to be movable and opens and closes the outlet channel 112. In the present embodiment, the valve plug 121 is pressed by the metal strip S to open the outlet channel 112. When the external force applied to the valve plug 121 is removed by the metal strip S, the valve plug 121 moves to the blocking position of the outlet channel 112 so that the valve plug 121 of the valve plug 121 is removed. A tip protrudes out of the outlet channel 112, ie the nozzle outlet, and consequently the outlet channel 112 is blocked.

In this embodiment, the metal strip (S) is pressed down by the pressing member 130, and the metal strip (S) is close to the nozzle body 110 by the metal strip (S) by the valve When the front end of the plug 121 is pressed, the valve plug 121 opens (falls) the nozzle outlet 212 while reversing (falling) the inside of the nozzle body 110.

When the metal strip S rises and moves away from the nozzle body 110, the valve plug 121 may be restored to its original position, ie, moved forward (rising), thereby preventing the nozzle outlet 112 again. The valve plug 121 is closed by a valve supporter 122 for restoring the fluid pressure inside the nozzle body 110 and / or the valve plug 121 to the nozzle shutoff position to block the nozzle outlet 112.

The valve supporter 122 may include a spring, for example, a coil spring, which elastically supports the valve plug 121. One end (lower end) of the coil spring is installed at the bottom of the nozzle body 110 (upper side of the adhesive accommodating chamber), and the other end (upper end) is connected to the valve plug 121 to connect the nozzle to the valve plug 121. It is the structure which provides the elastic force of an exit direction.

11 and 12, the outlet channel 112 has an outlet 112a for discharging the adhesive and a passage reducing portion 112b that narrows toward the outlet 112a. In addition, the valve plug 121 may have a shape in which the width decreases toward the front end, that is, the upper end thereof so as to correspond to the shape of the outlet channel 112. For example, the upper structure of the valve plug 121 may be configured as a cone shape or a polygonal pyramid shape.

In the present embodiment, the nozzle body 110 is provided in the lower frame 10 (particularly, the die frame 10b). The die frame 10b is provided with a lifter for elastically supporting the metal strip S upwardly so that the metal strip S is restored to a top dead center position. Referring to FIG. 11, the lifter in this embodiment includes a lift pin 11 that supports the metal strip S and a lift spring 12 that supports the lift pin 11 upwards. Elastically supports the metal strip S in an upward direction so that the metal strip S is spaced apart from the adhesion coating applicator, that is, the valve plug 121.

Therefore, when the pressing member 130 is raised, the metal strip S moves away from the nozzle body 110, and when the force for pushing down the valve plug 121 is removed, the pressure inside the nozzle (adhesive agent is accommodated). Pressure inside the seal) and / or the valve supporter 122 restores the valve plug 121 to the nozzle shutoff position.

Referring to FIG. 13, the nozzle body 110, that is, the adhesive applicator receives the adhesive through the adhesive supply pipe 140 of the adhesive supply. More specifically, the adhesive contained in the adhesive tank T is connected to the nozzle body at a predetermined pressure through the adhesive supply pipe 140 by a pump such as a pneumatic device that applies an air pressure. 110).

That is, the adhesive supplier includes an adhesive presser such as a pneumatic device or a hydraulic device or a pump for pressurizing the adhesive contained in the adhesive tank T and the adhesive tank T, and the adhesive includes the adhesive supply pipe 140. And the adhesive accommodating chamber 141 are supplied to the nozzle body 110.

In addition, the adhesive applying unit 100 may be configured to include a plurality of nozzle bodies 110 are installed in parallel with each other, the nozzle body 110 is the adhesive coating position (D: see Fig. 16, T-shaped ramie B) is applied to a plurality of points of the member in the form of dots).

In this embodiment, the adhesive of the adhesive tank T is distributed at a predetermined pressure through the adhesive accommodating chamber 141 and simultaneously supplied to the plurality of nozzle bodies 110. That is, the adhesive of a predetermined pressure is uniformly supplied to the plurality of nozzle bodies 110 connected in parallel to the adhesive accommodating chamber 141, and the adhesive is applied to a plurality of points, that is, several positions at the same time. Therefore, when the adhesive is filled into the adhesive accommodating chamber 141 and the nozzle body 110 at a predetermined pressure, and the valve plug 121 is opened by the pressing member 130, the nozzle body 110 is opened. The adhesive inside is pushed out by the pressure applied by the pneumatic device and applied to the surface of the metal strip (S).

In addition, an upper surface of the nozzle body 110 may coincide with a height of the lower surface, in particular, the upper surface of the die frame 10b, and the upper surface of the die frame 10b may be a bottom dead center of the metal strip S. However, preferably when the metal strip (S) is lowered to the bottom dead center, the structure in which the top surface of the metal strip (S) and the nozzle body 110 is spaced apart by a predetermined interval to smooth the discharge and application of the adhesive. do.

The pressing member 130 is provided on the upper die 20 is configured to move up and down with the upper die. In more detail, the pressing member 130 is provided on the upper frame 20a which is installed at intervals above the die frame 10b, and is elevated. In this embodiment, the pressing member 130 is integrated with the upper mold 20. Ascend while climbing. Therefore, the upper mold 20 becomes an upper holder for supporting the pressing member 130, and the lower die frame 10b becomes a lower holder for supporting the nozzle body 110. The nozzle body 110 may be arranged in parallel to the die frame 10b in accordance with the outer shape of the core member (C).

On the other hand, the adhesive applicator, that is, the nozzle body 110 is a predetermined period by the nozzle lifting mechanism 150, which is provided in the lower die, in particular the lower holder (10c), for example, a lifting mechanism such as a cam mechanism or a hydraulic / pneumatic cylinder It lowers every time, and prevents adhesive application to the said metal strip (S). More specifically, when the laminated core member is a 10-layer structure composed of 10 lamina members, the adhesive coating process is omitted once every 10 times the metal strip S is moved. Adhesion between the laminated core members C is prevented.

To this end, the nozzle lifting mechanism 150 lowers the nozzle body 110 each time the metal strip S moves a predetermined pitch, so that the valve plug 121 is moved by the metal strip S. To prevent pressurization. In the laminated core member C shown in FIG. 1, the dotted line is the portion where the interlayer adhesion is made, and the solid line is the portion without the interlayer adhesion as a boundary between the laminated core members.

Referring to FIG. 14, in the present embodiment, the nozzle elevating mechanism 150 includes an elevating body 151 supported by the adhesive applying unit 100, in particular an adhesive applicator, and provided to be elevated in the lower frame 10. And a supporter 152 supporting the elevating body 151 to ascend to the top dead center of the elevating body.

In this embodiment, the elevating body 151 is fixed to the lower side of the adhesive coating unit 100 to be integrated with the adhesive coating unit 100, in particular the adhesive applicator. The nozzle lifting mechanism 150 further includes a lowering device 153 such as a spring for lowering the lifting body 151 to restore the bottom dead center of the lifting body. Of course, the structure and operation of the nozzle elevating mechanism is not limited to the above-described example.

In addition, in the present embodiment, the lower mold 10 includes a base frame 10a (Sub Bolster) forming a base and dies 10b and 10c provided on an upper side of the base frame 10a. Body 110 or adhesive applicator is installed on the die 10b, 10c.

The die may include a die frame 10b (Die Steel) on which the nozzle body 110 is installed, and a die holder 10c, Low provided on the lower side of the die frame 10b and on which the nozzle elevating mechanism 150 is installed. Shoe) and a nozzle installation hole is formed in the die frame 10b, but the structure of the lower die, in particular the die frame is not limited thereto. The die frame 10b is provided with the nozzle body 110 and the die 220, and the upper frame 20a is provided with the pressing member 130 and the punch 210.

Therefore, the adhesive applying unit in this embodiment is provided with the lower mold | type 10, more specifically, the adhesive applicator 110 with which the die frame 10b is equipped, and the said adhesive applicator, and is provided with the said adhesive applicator. The valve 120 which opens and closes, the upper mold | type 20 provided in the upper side of the said lower mold | type 10, and more specifically, the pressurizing member 130 provided in the upper frame 20a is comprised.

On the other hand, the adhesive applicator 110, that is, the nozzle body, the valve plug 121 and the valve supporter 122 is made of a material to prevent or minimize the narrowing of the adhesive, that is, made of a resin having no polarity or low surface tension Specifically, the plastic material may be made of Teflon, and in addition, it may be made of a material such as PP (polypropylene) and PE (polyethylene) that do not easily adhere to the adhesive.

In this embodiment, the pressing member 130 is a compression plate or a pressure plate that functions as a stripper in a blanking process and simultaneously presses the metal strip S toward the nozzle bodies 110 in an adhesive application process. In addition, an elastic member (for example, a coil spring) 131 and a lifting guide 132 for guiding the lifting of the pressing member are provided between the pressing member 130 and the upper frame 20a.

Hereinafter, an operation process of the adhesive applying unit 100 according to the present embodiment will be described with reference to FIG. 13.

The metal strip S moves by a predetermined distance at a predetermined period, that is, every press stroke, and passes between the pressing member 130 and the die frame 10b, as shown in FIG. When the metal strip S reaches the adhesive application position, the upper die 20 is lowered to press the metal strip S as shown in FIG. 13 (b). Accordingly, the metal strip S pressurizes the valve plug 121 to open the nozzle outlet 112, and the adhesive inside the nozzle body 110 is pushed by the internal pressure, thereby allowing the metal strip S to be pressed. It is applied to the surface of the.

When the upper die 20 rises, the metal strip S is moved away from the nozzle outlet 112 by the lifter pin 11 and the leaf spring 12, so that the valve plug 121 is moved. While rising, the nozzle outlet 112 is again blocked as shown in FIG.

However, a syringe-type adhesive feeder may be applied, as shown in FIG. 15, to fill the nozzle body 110 by gravity rather than pneumatic or hydraulic. That is, the adhesive supplier may be configured to include an adhesive tank (T), the piston (P) and the weight (W). More specifically, the adhesive tank (T) is provided with a piston (P), the piston (P) is lowered by a weight, for example, the weight (W) while the inside of the adhesive tank (T) An adhesive is supplied to the nozzle body 110. That is, the weight (W) is lowered by gravity to enter the piston (P) into the adhesive tank (T).

The manufacturing process of the adhesive laminated core member by the laminated core member manufacturing apparatus having the above-described configuration is as follows.

The metal strip S by a material conveying device (not shown) such as a conveying roller, such that the metal strip S passes through the pressing member, that is, the stripper 230 and the die frame 10b by one pitch. When the) is supplied, the pressing member 130 and the punch 210 mounted on the upper die 20 are lowered together with the upper die 20 to press the upper surface of the metal strip S.

At this time, the metal strip S is pressed down by the pressing member 130 and lowered toward the nozzle body 110, and the valve plug 121 is pressed by the metal strip S to press the nozzle body 110. Open the outlet. Accordingly, an adhesive is applied to a portion of the surface of the metal strip located directly above the adhesive applicator, that is, the nozzle body 110.

Simultaneously with the adhesive application process described above, blanking of the material proceeds by the punch 210 which descends simultaneously with the pressing member 130 at the downstream side of the adhesive application region, and blanking inside the laminate hole 300a, that is, the laminated barrel. The integration process of the lamina members sequentially stacked by the proceeds.

The stacking barrel 300a is a passage formed by the squeeze 320 and the adhesive curing machine 310, and furthermore, the pinch 340, and the lamination of the lamina members L and the curing of the adhesive proceed. Form a passage.

The squeeze 320 and the pinch 340 align the products passing through the lamination barrel, that is, the lamina members L and the lamination core members C, and the adhesive curing machine 310 is formed by high frequency induction. The heat generated hardens the adhesive present between the layers of the lamina members (L).

When the application of the adhesive and the blanking are completed, the upper die 20 is raised, and the metal strip S is separated from the valve plug 121 by the lifter pin 11 and the lift spring 12 to release the nozzle. The outlet 112 is closed again, and when the metal strip S is moved one pitch again, the above-described process is repeated, and the manufacture of the adhesive laminated core member C is performed.

Meanwhile, the temperature control unit 500 monitors the ambient temperature of the laminate unit 300 and the ambient temperature of the die 220 in real time through temperature sensors 511 and 512. When the temperature of the die 220 rises above a predetermined temperature, the temperature control unit 500, in particular the temperature monitor 520, operates the cooling unit, in particular the fluid transporter 440, to cool the fluid (cooling water). Forced flow of) cools the laminate unit and its surrounding components and automatically manages the temperature of the laminate unit and its surrounding area and further the die.

More specifically, the temperature control unit 500 monitors the temperature of the die 220 or the ambient temperature of the die, that is, the temperature of the die through the second temperature sensor 512 in real time, and the second temperature. When the temperature value input from the sensor 512 is above a predetermined temperature, the cooling unit 400 is operated to force the cooling fluid to flow. Of course, the temperature control unit 500 may control the operation of the cooling unit 400 on the basis of the temperature value input from the first temperature sensor 511.

As described above, the embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope thereof in addition to the embodiments described above can be realized by those skilled in the art. It is self-evident to.

Therefore, the above-described embodiments are to be considered as illustrative and not restrictive, and thus, the invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

The present invention relates to a core manufacturing apparatus and process for manufacturing a core used as a rotor or stator of a motor or a generator, etc. According to the present invention, the quality and specification of the core member can be easily managed.

Claims (7)

1. An adhesive applying unit for applying an adhesive to a continuously conveyed material, a blanking unit for blanking the material to form lamina members, and the lamina member sequentially stacked in a laminate hole by the blanking of the material And a laminate unit for integrating them, a cooling unit for cooling the laminate unit and the periphery of the laminate unit, and a temperature control unit for controlling the cooling unit, and laminated by laminating the lamina members. An adhesive laminated core member manufacturing apparatus for manufacturing a core member:

   The blanking unit includes a die stacked on the lymate unit and a punch facing the die;

   The laminate unit comprises an adhesive curing machine for curing the adhesive present between the layers of the lamina members to integrate the lamina members passing through the laminate holes;

   And the temperature control unit controls the cooling unit such that the temperature of the die is maintained at or below a predetermined temperature.
2. The method of claim 1,

   The temperature control unit is; A first temperature sensor for sensing a temperature of the laminate unit or an ambient temperature of the laminate unit, a second temperature sensor for sensing a temperature of the die or an ambient temperature of the die, and the first temperature sensor and a second temperature sensor Adhesive laminated core member manufacturing apparatus characterized in that it comprises a temperature monitor for receiving a temperature from.
3. The method of claim 2,

   The laminate unit is provided between the adhesive curing machine and the die for alignment of lamina members sequentially formed by the blanking of the material and the side pressure is applied to the lamina members moving to the adhesive curing machine. And a squeeze applied to tighten the lamina members, and a pinch provided below the adhesive curing machine to prevent the laminated core member from falling down to apply lateral pressure to the laminated core member;

   The cooling unit includes a first cooling furnace provided on the outer side of the adhesive curing machine, a second cooling furnace for cooling the squeeze, and a third cooling furnace provided on the outer side of the pinch. Adhesive laminated core member manufacturing apparatus.
4. The method of claim 3,

   The laminate unit; Adhesively laminated core member manufacturing apparatus characterized in that it further comprises a barrier material provided in the area between the adhesive curing machine and the squeeze for thermal disconnection of the adhesive curing machine and the squeeze.
5. The method of claim 3,

   The laminate unit; Adhesively laminated core member manufacturing apparatus characterized in that it further comprises a barrier material provided in the area between the adhesive curing machine and the heater and the pinch for thermal disconnection of the adhesive curing machine and the pinch.
6. The method of claim 1,

   The die is provided together with the laminate unit in a lower mold of the adhesive laminated core member manufacturing apparatus; Adhesive punched laminated core member manufacturing apparatus characterized in that the punch is provided in the upper die.
7. As an automatic temperature control method of the adhesive laminated core member according to any one of claims 1 to 6,

   A temperature monitoring step of sensing the temperature of the die or the ambient temperature of the die in real time; And

   And a cooling step of forcibly flowing a cooling fluid by operating the cooling unit when the temperature of the die or the ambient temperature of the die is equal to or higher than a predetermined temperature.

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