KR20230145719A - Cooling apparatus for laminated motor core manufacturing process - Google Patents

Abstract

The cooling device for manufacturing the laminated core of a motor according to the present invention is installed at the lower part of the cooling chamber 570 and cools the lower jig 32 and the rotor core 200 mounted on the lower jig 32 through the cold air supply pipe 571B. A cold air supply unit 571 that supplies cold air to the inside; and a cold air supply support cylindrical body 572 located vertically below the lower jig 32 for supplying the cold air, and the cold air supply support cylindrical body 572 is in communication with the cold air supply pipe 571B. A cold air passing hole is formed in the lower jig 32 upward and downward, so that cold air supplied from the cold air supply pipe 571B flows into the rotor core 200 through the cold air passing hole. do.

Description

Cooling device for manufacturing laminated cores of motors {COOLING APPARATUS FOR LAMINATED MOTOR CORE MANUFACTURING PROCESS}

The present invention relates to a cooling device used in a laminated core manufacturing process for a motor. More specifically, the present invention relates to a cooling device for manufacturing laminated cores of motors that can improve the productivity and product quality of laminated cores such as rotor cores and stator cores.

Typically, the stator or rotor of a motor includes a laminated core. The laminated core is manufactured by stacking multiple lamina members formed by continuously forming electrical steel sheets using a press machine. One lamina member to be stacked must be combined with the lamina members stacked below and above it, and a method of combining them is disclosed in Korean Patent No. 10-1811266.

In the prior art, a so-called self-bonding steel plate coated with an adhesive layer is used to form core sheets in a press mold, stack the core sheets, and simultaneously heat the laminated cores to bond the core sheets to each other. is presenting. In this way, the adhesive layer between the core sheets is heat-cured by heating in a press mold to obtain a laminated core in which the core sheets are adhered to each other, and the manufactured laminated core is cooled through a cooling process to ship the product.

In Korean Patent Publication No. 10-2021-0154779, laminated cores are stacked in a press mold, then the upper jig is combined with the lower jig while the laminated core is placed in the lower jig, and these jigs are transported through a conveyor to perform high-frequency induction heating. and cooling technology are disclosed.

Here, a laminated core product is manufactured by heating the laminated core through high-frequency induction heating and thermosetting the adhesive layer between the core sheets. The laminated core and the upper and lower jigs holding the laminated core are also heated by high-frequency induction heating. Therefore, a process of cooling the laminated core and the upper and lower jigs together is necessary.

The cooling unit for this cools the entire cooling chamber where the laminated core and the upper and lower jigs are located with cold air. However, because the cold air is supplied only to the outside of the laminated core, the inside of the laminated core is not completely cooled. Therefore, there is a problem in that the manufacturing process is delayed and productivity is reduced because natural cooling must be waited for in the subsequent process.

Accordingly, the present inventors would like to propose a cooling device for manufacturing a laminated core of a motor that can improve the productivity and quality of the laminated core by quickly cooling the inside of the laminated core that is heated and seated between the upper jig and the lower jig.

The purpose of the present invention is to manufacture the laminated core of a motor so that the entire laminated core, upper jig, and lower jig can be quickly cooled by simultaneously spraying cold air to the outside and inside of the laminated core that is seated and transported between the upper jig and the lower jig. A cooling device is provided.

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

The cooling device for manufacturing the laminated core of the motor according to the present invention is

A cold air supply unit 571 installed at the lower part of the cooling chamber 570 and supplying cold air to the lower jig 32 and the inside of the rotor core 200 seated on the lower jig 32 through the cold air supply pipe 571B; and

It is located vertically below the lower jig 32 and includes a cold air supply support cylindrical body 572 for supplying the cold air,

The cold air supply support cylindrical body 572 is in communication with the cold air supply pipe 571B, and a cold air passing hole penetrating upward and downward is formed in the lower jig 32, so that the cold air supplied from the cold air supply pipe 571B is the cold air. It is characterized in that it flows into the inside of the rotor core 200 through a through hole.

In the present invention, the diameter of the cold air supply receiving cylindrical body 572 may be equal to or larger than the diameter of the lower jig 32.

In the present invention, it further includes a cold air supply path (571A) in communication with the cold air supply pipe (571B), and a cold air supply hole (571A') is formed above the cold air supply path (571A) so that the cold air flows into the cooling chamber. (570) It may be supplied internally.

In the present invention, it is preferable that an inclined cold air supply guide plate 571A" is installed at the top of the cold air supply hole 571A'.

In the present invention, an air amplifier 571C may be installed at the bottom of the cold air supply pipe 571B.

In the present invention, an upper jig 31 is coupled to the upper part of the rotor core 200, and the cold air rising inside the rotor core 200 passes through the cooling air passage hole 31A' formed in the upper jig 31. ) is desirable to pass.

In the present invention, a cold air injection cylindrical body 573 for cooling the outer side of the core may be further included, which is installed on the upper side of the rotor core 200 to be movable up and down.

In the present invention, it is preferable that a cylindrical body 575 for supplying and discharging cold air is coupled to the upper part of the cold air spraying cylindrical body 573 for cooling the outside of the core so as to surround the outer circumference of the rotor core 200.

The present invention cools the heated laminated core by simultaneously spraying cold air to the inside and outside of the laminated core through a cooling device for manufacturing the laminated core of a motor with a new structure, thereby improving productivity and manufacturing a laminated core of excellent and uniform quality. can do.

In addition, the present invention can prevent thermal deformation of the laminated core through a rapid and uniform cooling process and reduce the dimensional error of the upper and lower jigs that seat and transport the laminated core, thereby reducing the defect rate of laminated core products.

1 is a plan view showing the overall layout of a motor laminated core manufacturing apparatus for illustrating a cooling device for manufacturing a laminated core of a motor according to the present invention.
Figure 2 is a perspective view of a rotor core jig on which a rotor core is seated to illustrate a cooling device for manufacturing laminated cores of a motor according to the present invention.
Figure 3 is a perspective view of a stator core jig on which a stator core is seated to illustrate a cooling device for manufacturing laminated cores of a motor according to the present invention.
Figure 4 is a conceptual diagram showing a cooling device for manufacturing a laminated core of a motor according to the present invention.
Figure 5 is a cross-sectional view taken along line A-A of Figure 4.
Figure 6 is a cross-sectional view taken along line B-B of Figure 2.

1 is a plan view showing the overall layout of a motor laminated core manufacturing apparatus for illustrating a cooling device for manufacturing a laminated core of a motor according to the present invention. The base material 100 used in the present invention is an electrical steel sheet 101 with an adhesive coating layer 102 formed on the front and back surfaces, and is also called a self-bonding steel sheet.

The base material 100 of the present invention is continuously supplied to the laminated core manufacturing device, and is sequentially molded in the lamination unit 1, which is a progressive press device, to form the first lamina member 201 and the second lamina member (201) in the form of a sheet. 201'). A plurality of molded first lamina members 201 and second lamina members 201' are stacked, respectively, to form the rotor core 200 and the stator core 200'.

The first lamina member 201 has a rotation shaft insertion hole 210 formed in the center, and a plurality of first holes 220, second holes 230, and a first hole 220 formed around the rotation shaft insertion hole 210 in the outer direction. 3 Holes 240 may be formed. Of course, the shapes of these various holes can be modified depending on the type of rotor core.

A space 210' for positioning the rotor is formed in the second lamina member 201', and a plurality of slots 250 protruding inside the second lamina member 201' are formed. The slot 250 is configured to allow cooling air to pass through, as will be described later. A plurality of fastening pieces 260 having bolt coupling holes 260' may be formed to protrude outward around the outer periphery of the second lamina member 201'.

The apparatus for manufacturing a laminated core of a motor to which the present invention is applied includes a lamination unit (1), a pretreatment unit (2), a welding unit (3), an uncoil unit (4), a first post-process unit (5), and a second post-process. It consists of a unit 5', a first inspection unit 6 and a second inspection unit 6'.

The rotor core and stator core 200 (200') manufactured by stacking in the stacking unit (1) are placed on the first and second discharge conveyors (10) (10') installed on one side of the stacking unit (1). Through the first and second discharge conveyors 10 (10'), the rotor core and stator core (200) (200') are connected to the first and second discharge conveyors (10) (10') installed on one side of the first and second discharge conveyors (10) (10'). It is transferred to one side of the second post-processing unit 5 (5'). The first and second discharge conveyors 10 and 10' are preferably provided as roller-type conveyors or belt-type conveyors. The transferred rotor core 200 is transferred and seated on the rotor core jig 30 of the first post-process unit 5, and the stator core 200' is placed on the stator core jig (200') of the second post-process unit 5'. 40) It is transported upward and settled.

The first and second post-processing units 5 and 5' are used to increase the product reliability of the rotor core 200 and stator core 200' manufactured in the stacking unit 1. A device for performing ancillary processing to (200'), first and second process lines 51 (51'), first and second return lines (52) (52'), first and second Confirmation units (53) (53'), first and second confirmation units (54) (54'), first and second direct heating units (55) (55'), first and second induction heating units ( 56) (56') and first and second cooling units (57) (57'). The first and second direct heating units 55 and 55' may be omitted in the manufacturing process of the laminated core manufacturing apparatus for the motor, and the first and second induction heating units 56 and 56' may be provided by high frequency induction. It can also be heated in several stages by heating method.

The first and second cooling units 57 and 57' are installed on one side of the first and second induction heating units 56 and 56' to heat the rotor core 200 and stator core 200'. It is a cooling device for cooling. The first and second loading units 61 and 61' load the rotor core 200 and stator core 200' that have undergone post-processing in the first and second process lines 51 and 51' into the first and second loading units 61 and 61'. 2 This is a device for transferring to the inspection unit (6) (6'). The first and second inspection units 6 and 6' inspect the rotor core 200 and the stator core 200', and distinguish between good and defective products in the first and second shipping units 62 and 62'. and shipped.

Figure 2 is a perspective view of the rotor core jig 30 on which the rotor core is seated, and Figure 3 is a perspective view of the stator core jig 40 on which the stator core is seated to explain the cooling device for manufacturing the laminated core of a motor according to the present invention. .

The first and second induction heating units (56) (56') and the first and second cooling units (57) (57') have transport and stop processes along the first and second process lines (51) (51'). A rotor core jig 30 and a stator core jig 40 that repeatedly perform are disposed. The transfer and stop of the rotor core jig 30 and the stator core jig 40 may be performed using transfer and stop means such as a limit switch or photo coupler, and by a control program of a control unit (not shown).

The rotor core jig 30 includes an upper jig 31 and a lower jig 32 as shown in FIG. 2. The upper jig 31 can be formed by fastening the upper plate 31A and the insulating plate 31B with coupling bolts (not shown). A collet expander 31C is installed in the central fitting hole of the upper plate 31A and the insulating plate 31B. The expansion rod (not shown) spreads the collet (not shown) coupled to the lower jig 32 outward so that the inner peripheral surface of the rotation axis insertion hole 210 of the rotor core 200 is pressed and interviewed on the outer peripheral surface of the collet. By doing so, the rotor core 200 is fixed in a seated state.

The lower jig 32 consists of a base plate 32A, a lower plate 32B coupled to the upper part of the base plate 32A, and an insulating plate 32C installed on the upper part of the lower plate 32B, and the insulating plate ( It has a structure in which a collet expander (31C) is coupled to the inner upper part of (32C). Accordingly, the rotor core 200 can remain stably seated between the upper jig 31 and the lower jig 32.

The upper and lower jigs 31 and 32 on which the rotor core 200 is seated are heated in the first induction heating unit 56 and transferred to the first cooling unit 57 to form the rotor core jig 30 after the cooling process. The upper jig 31 is separated and the cooled rotor core 200 is taken out.

In particular, the upper plate 31A and the insulating plate 31B constituting the upper jig 31 applied to the present invention include a rotation axis insertion hole 210 and a first hole 220 formed in the first lamina member 201. ), a plurality of holes are formed at positions corresponding to the second hole 230 and the third hole 240.

In the present invention, cold air is configured to pass through the first to third holes 220, 230, and 240. In particular, holes through which cold air passes are formed at positions of the upper plate 31A and the insulating plate 31B corresponding to the positions of the first to third holes 220, 230, and 240. A high-frequency induction coil insertion hole 31A" is formed at a position of the upper plate 31A corresponding to the first hole 220, and the upper plate 31A corresponding to the second and third holes 230 and 240 is formed. A cooling air passage hole (31A') is formed at the position. The insulation plate (31B) also has holes communicating upward and downward at positions corresponding to the high frequency induction coil insertion hole (31A") and the cooling air passage hole (31A'). form For reference, an induction heating coil is inserted into the high-frequency induction coil insertion hole 31A" during high-frequency heating in the first induction heating unit 56, so that the inner portion of the rotor core 200 can be directly heated by high-frequency induction heating. Let it happen.

The lower jig 32 consists of a base plate 32A, a lower plate 32B, and an insulating plate 32C. Each of the base plate 32A, lower plate 32B, and insulating plate 32C corresponds to the cooling air passage hole 31A' of the upper plate 31A and the cooling air passage hole 240 of the rotor core 200. Cold air passing holes (not shown) penetrating up and down can be formed at the position to allow cold air to pass through. The cold air passing through the cooling air passage hole formed in each plate constituting the lower jig 32 passes through each cooling air passage hole 240 of the rotor core 200 and each plate of the upper jig 31 and the upper plate 31A. ) is discharged through the cooling air passage hole (31A') formed in the

As shown in FIG. 3, the stator core jig 40 includes an upper jig 41 and a lower jig 42. The upper jig 41 includes an upper plate 41A and a lower plate 41B. The insulating plate 411C is installed between the upper plate 41A and the lower plate 41B. A collet expander 411D is installed in the central fitting hole of the upper plate 41A, lower plate 41B, and insulating plate 41C.

The expansion rod (not shown) of the collet expander (411D) spreads the collet (not shown) coupled to the lower jig 42 outward to form a space (210') of the stator core (200') on the outer circumferential surface of the collet. The stator core 200' is fixed in a seated state on the lower jig 42 by pressing the inner surface of the stator core 200'.

The lower jig 42 includes a base plate 42A, a lower plate 42B installed on the upper part of the base plate 42A, an upper plate 42C installed on an upper part of the lower plate 42B, and a lower plate 42B. ) and an insulating plate (42D) installed between the upper plate (42C). The lower jig 42 has a structure in which a collet is installed upward and inside the upper plate 42C and the insulating plate 42D.

In the present invention, when the stator core 200' is cooled by cold air, the upper plate 42C, the insulating plate 41C, 42D, and the lower plate 41B, which constitute the upper jig 41 and the lower jig 42, are used. ) (42B), a cooling air passage hole (not shown) is formed at a position corresponding to the cooling air passage hole (41A') of the upper plate (41A), and the cooling air of all plates constituting the lower jig (42) is formed. Cold air supplied through the through hole passes through the slot 250 of the second lamina member 201' and through a plurality of cooling air through holes 41A' formed in the upper plate 41A of the upper jig 41. is discharged.

In addition, a coupling rod (not shown) is inserted into the bolt coupling hole 260' of the fastening piece 260 protruding to the outside of the seated stator core 200', and the upper and lower portions of the coupling rod are formed by the lower plate 41B. and the coupling pieces 41B' and 42C' protruding from the insulating plate 42C.

FIG. 4 is a conceptual diagram showing a cooling device for manufacturing a laminated core of a motor according to the present invention, FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4, and FIG. 6 is a view taken along line B-B of FIG. 2. This is a cross-sectional view. Referring to FIGS. 4 to 6 , a structure in which the rotor core 200 mounted on the rotor core jig 30 is cooled will be described.

The present invention relates to the first and second cooling units 57 and 57' of the rotor core jig 30 and the stator core jig 40 on which the induction heated rotor core and stator core 200 and 200' are respectively seated. ) enters and stops the cooling chamber 570, then supplies cold air through the cooling air passage hole 240 of the rotor core 200 or the slot 250 of the stator core 200' to form the rotor core jig 30. Alternatively, the rotor core or stator core 200 is discharged through the cooling air passage holes 31A' and 41A' formed in the upper plates 31A and 41A of the upper jig 31 and 41 of the stator core jig 40. The rotor core or stator core 200 (200) is cooled by cooling the inner circumferential surface of the rotor core (200') and at the same time by cold air sprayed from the cold air spray hole (573') formed in the cold air spray cylindrical body (573) for cooling the outer side of the core. By cooling the outer peripheral surface of the rotor core or stator core 200 (200'), rapid cooling is achieved over the entire area of the rotor core or stator core 200 (200').

The rotor core 200 and the stator core 200' are transferred while seated on the rotor core jig 30 and the stator core jig 40, respectively, and then transferred to the first and second induction heating units 56 and 56'. Stopping at , the rotor core 200 and the stator core 200' are heated by a high-frequency induction heating method so that each core sheet is completely attached through heat curing. The heated rotor core 200 and stator core 200' are seated on the rotor core jig 30 and stator core jig 40, respectively, to the first and second cooling units 57 and 57'. By transferring, the rotor core and stator core 200 (200') are cooled.

The cooling device for manufacturing the laminated core of a motor according to the present invention is a device applied to the first and second cooling units 57 and 57'. The cooling device for manufacturing the laminated core of the motor of the present invention includes a rotor core jig 30 and a stator core jig ( 40) are each entered into a separate cooling chamber 570, and are each discharged after cooling.

The cooling device for manufacturing the laminated core of a motor according to the present invention includes a cold air supply unit 571, a cold air supply receiving cylinder 572, and a cold air spray cylinder 573. The cold air supply unit 571 is installed at the lower part of the conveyor 10A. The cold air supply support cylindrical body 572 is located at the lower part of the conveyor 10A and the lower part of the rotor core jig 30, and has a passage for supplying cold air supplied from the cold air supply unit 571 to the lower part of the rotor core jig 30. do. The cold air injection cylindrical body 573 is a device for supplying cold air to the outside of the rotor core jig 30. Through this configuration, the inside and outside of the heated rotor core 200 and rotor core jig 30 are cooled simultaneously. The cooling device for manufacturing the laminated core of a motor according to the present invention described below describes a structure for cooling the rotor core 200 and the rotor core jig 30, but the stator core 200' and the stator core jig 40 are described below. Of course, it can be applied as is even when cooling. Additionally, “laminated core” is used herein to mean either “rotor core” or “stator core” or both, as the case may be.

The cooling device for manufacturing the laminated core of a motor according to the present invention includes a cold air supply unit 571 and a cold air supply support cylinder located on the lower side of the base plate 32A of the rotor core jig 30 at the upper center of the cold air supply unit 571. A sieve 572, a cold air injection cylindrical body 573 installed around the outer circumference of the rotor core jig 30 for cooling the outside of the rotor core 200, and a cold air injection cylindrical body 573 for cooling the outside of the core. It may include a lifting and lowering means 574 for raising and lowering the cylindrical body 573.

The cold supplied to the cold air supply unit 571 flows through cooling air passage holes (not shown) formed in each plate of the lower jig 32 of the rotor core jig 30 and the first to third holes of the rotor core 200 ( The inside of the rotor core 200 is cooled while rising to the cooling air passage holes 31A' and 41A' formed in the upper plate 31A of the upper jig 31 through 220), 230, and 240.

The cold air supplied to the cold air supply unit 571 is branched to both sides to supply cold air into the cooling chamber 570, and the cold air supplied into the cooling chamber 570 is circulated using the blower motors M1 and M2. I order it. The cold air is supplied into the cold air injection cylindrical body 573 for cooling the outside of the core, and the cold air is sprayed through a plurality of cold air injection holes 573' formed on the inner surface of the cold air injection cylindrical body 573 for cooling the outside of the core. do. Therefore, the cold air cools the outside of the rotor core 200 mounted on the rotor core jig 30, so that the inside and outside of the laminated core are cooled simultaneously.

The cold air supply unit 571 includes a cold air supply passage 571A, a cold air supply pipe 571B connected to the lower center of the cold air supply passage 571A, and an air amplifier 571C installed at the lower end of the cold air supply pipe 571B. A cooling air passage hole formed in the base plate 32A of the rotor core jig 30 in which cold air flows through the cold air supply portion 572A of the cold air supply support cylindrical body 572 installed in the upper center of the cold air supply path 571A. It can be configured to supply cold air through. In this case, the cold air supply support cylindrical body 572 is located in the vertical lower part of the base plate 32A, and the diameter of the cold air supply support cylindrical body 572 is equal to or larger than the diameter of the lower jig 32. desirable.

As shown in FIG. 6, a cold air supply hole 571A' is formed above the cold air supply path 571A so that cold air is supplied into the cooling chamber 570. An inclined cold air supply guide plate 571A" may be installed at the top of the cold air supply hole 571A' to guide the supplied cold air. A portion of the cold air entering the cooling chamber 570 is sent to the cold air spray cylindrical body ( 573), and the remaining part of the cold air moves upward while lowering the temperature inside the cooling chamber 570 and is discharged to the outside through the outlet 570-1 at the top of the cooling chamber 570. For this purpose, the blower It can be configured by connecting a hose, etc. to be supplied to the cold air supply path 573A of the cold air injection cylindrical body 573 for cooling the outer core by driving the motor M1, and at the same time, the cold air inside the cooling chamber 570 is discharged through the outlet ( It can be discharged toward 570-1) by the operation of another blower motor (M2).

Cold air generated by a mobile air conditioner, etc. is supplied to the air amplifier 571C, and may be installed so that compressed air from the first compressor C1 installed in the lower part of the cooling chamber 570 is supplied to necessary parts.

The cold air injection cylindrical body 573 for cooling the outside of the core is a cylindrical body with a wrinkled shape to increase heat exchange efficiency, and a cold air supply path 573A is formed inside, and is radially spaced at a certain height and at regular intervals on the inside of the lower circumference. A plurality of cold air injection holes 573' are drilled and cold air supplied through the cold air supply path 573A is sprayed into the cold air injection holes 573' to cool the outside of the rotor core 200.

The cylindrical body 575 for supplying and discharging cold air is coupled to the upper part of the cold air spraying cylindrical body 573 for cooling the outer core. At the center of the cylindrical body 575 for supplying and discharging cold air, an discharge hole 575A is formed to discharge cold air rising through the cooling air passage hole 31A' formed in the upper plate 31A of the upper jig 31. . On both sides of the discharge hole 575A, first and second cold air supply paths 575B and 575C are separated from the discharge hole 575A to communicate with the inside of the cold air supply and discharge cylindrical body 575 to supply cold air. is formed

When the cold air injection cylindrical body 573 for cooling the outside of the core is provided as a cylindrical body in the shape of a corrugated pipe, the high temperature heat of the rotor core 200 and the rotor core jig 30 is transmitted through the corrugated pipe of the cold air injection cylindrical body 573 for cooling the outside of the core. By increasing the heat exchange area, rapid cooling can be achieved.

Compressed air from the first compressor C1 is supplied to the air amplifier 575D installed at the top of the discharge hole 575A. The output terminal of the air amplifier (575D) is connected to the outlet (570-1) installed at the top of the cooling chamber (570) through a flexible hose, etc., and the cooling air passage hole (31A) formed in the upper plate (31A) of the upper jig (31). '), the rising cold air (strictly speaking, it is no longer cold air since it has exchanged heat with the rotor core 200) is discharged to the outside.

Inside the cold air supply and discharge cylindrical body 575, first and second air amplifiers 575B' ( By driving the blower motors (M1) (M2) installed in the cooling chamber (570), the cold air inside the cooling chamber (570) is circulated and flows into the cylindrical body (575) for supplying and discharging cold air. Let it flow strongly. The cold air supplied to the first and second cold air supply passages 575B and 575C is used for cooling purposes fixed to the lower part of the cold air discharge hole formed by drilling in the lower part of the first and second cold air supply passages 575B and 575C, respectively. While being supplied through the cold air supply path 573A of the cold air injection cylindrical body 573, cold air is sprayed through the cold air injection hole 573' to cool the outer circumference of the rotor core 200 seated on the rotor core jig 30. You can do it.

Compressed air may be supplied to the first and second air amplifiers 575B' and 575C' by a second compressor C2 installed below the cooling chamber 570, and the blower motor M1 (M2) may be supplied to the first and second air amplifiers 575B' and 575C'. ) and the first and second air amplifiers 575B' and 575C' may be connected to each other by flexible hoses.

The cold air injection cylindrical body 573 for cooling the outer core is provided to be raised or lowered by a lifting means 574 such as a motor or cylinder, which is used to lift and lower the rotor core jig 30 before cooling the rotor core 200. It can be designed to be raised upward and then lowered by the control program of the control unit when performing the cooling process.

A guide protrusion (576A) formed integrally at the rear of the support bracket (576) coupled to the fixing pieces (573B) fixed to both ends of the upper circumference of the cold air injection cylindrical body (573) for cooling the outer core of the core is placed on one side of the cooling chamber (570). After being inserted into the fixed guide rail 577, the guide protrusion 576A of the support bracket 576 is lifted or lowered along the guide rail 577 by the raising and lowering means 574 installed below the support bracket 576. By lowering, the cold air injection cylindrical body 573 for cooling the outer core can be provided to be raised and lowered by the raising and lowering means 574, and the raising and lowering means 574 includes a cam or gear using a motor and a cylinder. You may adopt this method.

In this way, after cooling the rotor core jig 30 and the rotor core 200 in a state in which the cold air injection cylindrical body 573 for cooling the outer core is lowered by the raising and lowering means 574, the upper jig 31 is lifted. After being raised, the lower jig 32 and the rotor core 200 seated on it are transferred along the conveyor 10A toward the first loading unit 61, and the lower jig 32 is transferred along the first return line 52. At the same time, the rotor core 200 is transferred to the first and second loading units 62 and discharged.

It should be noted that the description of the invention described above is merely an example for understanding the invention and is not intended to define the scope of the invention. The scope of the present invention is defined by the appended claims, and it should be understood that any simple modification or change of the present invention within this scope falls within the scope of protection of the present invention.

1: Stacking unit 2: Pretreatment unit
3: Welding unit 4: Uncoil unit
5: first post-process unit 5': second post-process unit
6: first inspection unit 6': second inspection unit
10: first discharge conveyor 10': second discharge conveyor
30: rotor core 31: upper jig
32: Lower jig 31A: Upper plate
31A': Cooling air passage hole
31A": High frequency induction coil insertion hole
31B: Insulating plate 31C: Collet expander
32A: Base plate 32B: Bottom plate
32C: Insulating plate 40: Stator core
41: upper jig 42: lower jig
41A: Top plate 41A': Cooling air passage hole
41B: Lower plate 41C: Insulating plate
41D: collet expander 42A: base plate
42B: Lower plate 42C: Upper plate
42D: Insulating plate 51: First process line
51': second process line 52: first return line
52': second return line 53: first confirmation unit
53': 2nd confirmation unit
54, 54': first and second measuring units
55, 55': first and second direct heating units
56, 56': first and second induction heating units
57, 57': first and second cooling units 61, 61': first and second loading units
62, 62': first and second shipments 100: base material
101: Electrical steel sheet 102: Adhesion coating layer
200: Rotor core 200': Stator core
210: rotation axis insertion hole 210': space
220: first hole 230: second hole
240: third hole 570: cooling chamber
570-1: Outlet C1, C2: First and second compressors
571: cold air supply unit 571A: cold air supply path
571A': Cold air supply hole 571A": Cold air supply information board
571B: Cold air supply pipe 571C: Air amplifier
572: Cold air supply support cylindrical body 572A: Cold air supply unit
573: cold air spray cylindrical body 573': cold air spray hole
573A: Cold air supply path 573B: Fixed piece
574: means for raising and lowering
575: Cylindrical body for supplying and discharging cold air
575A: Discharge hole M1, M2: Blower motor
575B, 575C: first and second cold air supply paths
575B', 575C': first and second air amplifiers
575D: Air Amplifier 576: Support Bracket
576A: Guide projection 577: Guide rail
300, 300': 1st and 2nd transfer jig

Claims (8)

A cold air supply unit 571 installed at the lower part of the cooling chamber 570 and supplying cold air to the lower jig 32 and the inside of the rotor core 200 seated on the lower jig 32 through the cold air supply pipe 571B; and
It is located vertically below the lower jig 32 and includes a cold air supply support cylindrical body 572 for supplying the cold air,
The cold air supply support cylindrical body 572 is in communication with the cold air supply pipe 571B, and a cold air passing hole penetrating upward and downward is formed in the lower jig 32, so that the cold air supplied from the cold air supply pipe 571B is the cold air. A cooling device for manufacturing a laminated core of a motor, characterized in that the cooling device flows into the inside of the rotor core 200 through a through hole. The cooling device according to claim 1, wherein the diameter of the cold air supply receiving cylindrical body (572) is equal to or larger than the diameter of the lower jig (32). The method of claim 1, further comprising a cold air supply passage (571A) in communication with the cold air supply pipe (571B), and forming a cold air supply hole (571A') above the cold air supply passage (571A) so that the cold air flows into the A cooling device for manufacturing laminated cores of a motor, characterized in that it is supplied into the cooling chamber (570). The cooling device for manufacturing a laminated core of a motor according to claim 3, wherein an inclined cold air supply guide plate (571A") is installed at the top of the cold air supply hole (571A'). The cooling device for manufacturing a laminated core of a motor according to claim 1, wherein an air amplifier (571C) is installed at the bottom of the cold air supply pipe (571B). The method of claim 1, wherein an upper jig 31 is coupled to the upper part of the rotor core 200, and cold air rising inside the rotor core 200 is formed in the upper jig 31 through a cooling air passage hole ( 31A') Cooling device for manufacturing laminated cores of motors. The cooling device for manufacturing a laminated core of a motor according to claim 1, further comprising a cold air injection cylindrical body (573) for cooling the outer side of the core, which is installed to be movable up and down on the upper side of the rotor core (200). The motor according to claim 7, wherein a cylindrical body 575 for supplying and discharging cold air is coupled to the upper part of the cold air spraying cylindrical body 573 for cooling the outer core of the core so as to surround the outer circumference of the rotor core 200. Cooling device for manufacturing laminated cores.

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