JP2997649B2 - Motor core automatic binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a motor core by punching a plate-shaped motor core material and stacking a plurality of the punched core members. Automatic lamination device for automatically laminating and bundling in a die to produce a motor core.

[0002]

2. Description of the Related Art Conventionally, a motor core made of a plate-shaped core member is manufactured by punching a silicon steel plate having a thickness of about 0.5 mm, and laminating and binding a plurality of punched core members in a mold. I have. In actual production, in order to improve productivity, punching of silicon steel sheets and lamination and bundling in a mold are automated.

FIG. 13 is a view for explaining the outline of such a conventional motor core automatic binding method. As shown in FIG. 13, the motor core material 61 is punched by a pair of dies including an upper die 64 and a lower die 65, and the punched core member is formed in a cylindrical shape formed in the lower die 65. Are sequentially stacked in the space 65a. Motor core material 6
1 includes a punch 6 in advance of the punching process.
2, a number of protrusions 63 are formed, and the protrusions 63 formed in this manner are the uppermost core member of the motor core 66 already laminated in the space 65a of the lower mold 65. (A recess formed on the back side of the protrusion 63) 67 and are bound together by caulking.

[0004]

However, in the conventional method as described above, plastic deformation occurs in the caulked portion composed of the projection 63 and the recess 67 inside the finally manufactured motor core. Since a large plastic deformation impedes the magnetic field generated when the motor is used, there is a problem that the magnetic characteristics of the motor core and the motor efficiency are reduced.

Further, in the conventional method as described above, since the binding strength of the caulked portions 63 and 67 inside the motor core changes depending on the thickness tolerance and the material of the motor core material, fine adjustment of the mold is required. There is a problem that sometimes.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a motor core automatic binding device capable of automatically binding a motor core without forming a caulked portion. .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a female die and a male die which are formed by punching a plate-shaped motor core material and laminating a plurality of punched core members. And a driving unit for driving at least one of the male type, a spectroscope that splits the laser light oscillated by the laser oscillator into a plurality of laser lights, and a transmission unit that transmits each laser light split by the spectroscope. An emission optical system which is incorporated in the female mold and irradiates each laser beam transmitted by the transmission means to a plurality of points on a side surface of a motor core laminated in the female mold to perform welding, and A processing gas supply means for cooling the emission optical system, and a motor in which the processing gas supplied from the processing gas supply means of the transmission means is laminated in the female mold in the emission optical system. A processing gas flow path for flowing to the laser irradiation portion on the center side is provided, and the processing gas flowing out of the emission optical system flows along the motor core side surface stacked in the female mold on the inner surface of the female mold. To provide a motor core automatic binding device characterized by providing a processing gas outflow groove for the motor core.

[0008]

According to the present invention, an emission optical system is incorporated in a female die for laminating a plurality of punched core members, and a laser core from the incorporated emission optical system is laminated in the female die. By irradiating a plurality of points on the side surface and performing welding, the motor core can be automatically bound without forming a caulked portion in the motor core. According to the present invention, particularly, the processing gas flowing through the processing gas supply means provided in the transmission means flows through the processing gas flow path provided in the emission optical system, and the motor core laminated in the female mold. Since the laser beam is sprayed on the laser irradiation portion on the side surface, it is possible to prevent the emission optical system from being damaged during continuous operation for a long time, and to secure stable welding quality. Further, according to the present invention, the processing gas flowing out of the emission optical system flows along the processing gas outflow groove provided on the inner surface of the female die along the side of the motor core laminated in the female die. Can smoothly flow out of the mold.

[0010]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

Here, FIG. 1 is a diagram showing an entire configuration of an embodiment of a motor core automatic binding device (hereinafter also referred to as “laser core automatic binding device”) according to the present invention, and FIG.
FIG. 2 is a view showing a configuration around a mold of the automatic laser core binding apparatus shown in FIG. 1. As shown in FIGS. 1 and 2, the laser core automatic binding device is an upper die (male) which is a pair of dies for punching a plate-shaped motor core material 6 and stacking a plurality of punched core members. 7 and lower mold (female mold) 8
a, 8b and a motor core which is incorporated in an emission optical system fixed mold 8b forming a part of the lower molds 8a, 8b, and transmits each laser beam transmitted by the optical fiber 3 into the lower molds 8a, 8b. An emission optical system 10 that irradiates a plurality of points on five side surfaces to perform spot welding. Further, a YAG laser oscillator 1 that oscillates laser light, and a spectroscope 2 that splits the laser light oscillated by the YAG laser oscillator 1 into a plurality of laser lights are provided. The light is transmitted to the emission optical system 10 incorporated in the emission optical system fixing die 8b by a plurality of optical fibers 3 as transmission means. As shown in FIG. 2, the upper mold 7 has a cylindrical shape having a cross section substantially the same diameter as the motor core 5, and fits with the cylindrical space 4 formed in the lower molds 8 a and 8 b. I have.

Next, FIGS. 3A and 3B show a detailed configuration of the spectroscope 2 of the laser core automatic binding apparatus shown in FIG. As shown in FIG. 3A, the laser beam 12 oscillated by the YAG laser oscillator 1 is incident on the inside of the spectroscope 2 provided below the reflecting mirror 13 by the reflecting mirror 13. Also, as shown in FIG.
Inside the spectroscope 2, two spatial spectroscopy units 16 for spatially dispersing the laser light 12 and optical path switching means for switching the optical path of the laser light incident on these spatial spectroscopic units 16 with high accuracy can be positioned. And a total reflection mirror 15 are provided. The two spatial spectroscopy units 16 include a total reflection mirror 15.
Are symmetrically arranged on both sides thereof.

Here, the two spatial spectroscopy units 16 each include a plurality of partial transmission mirrors 17 and a total reflection mirror 18.
The incident laser light sequentially passes through them, and is spatially separated into a plurality of laser lights having the same energy. Each of these split laser beams is transmitted to a plurality of optical fibers 3.
Are condensed by the respective fiber incident lenses 19 provided corresponding to each of the optical fibers 3, and are incident on the optical fiber core 20 of the corresponding optical fiber 3 and transmitted. Further, the total reflection mirror 15 is
, And repeats clockwise rotation and counterclockwise rotation within a range of 90 degrees, so that the optical path of laser light incident on the spatial spectroscopy units 16 symmetrically arranged on both sides can be switched over time. I have.

FIG. 4 is a block diagram showing a configuration of a control system of the laser core automatic binding apparatus shown in FIGS.
As shown in FIG. 4, the control system includes a press 21 as a drive unit for driving the upper mold 7 (see FIG. 2) to punch out the motor core material, a control device 22 for controlling the whole system,
Laser controller 23 for controlling AG laser oscillator 1
And a driver 24 for controlling the spectroscope 2. The press 21, the YAG laser oscillator 1, and the spectroscope 2 are operated cooperatively as described later.

Next, the detailed structure of the optical fiber 3 of the laser core automatic binding apparatus shown in FIG. 1 is shown in FIGS. As shown in FIG. 5A, the optical fiber 3 for transmitting the split laser light is connected via a manifold 25 to a protective tube 28 of a commercially available laser optical fiber. A processing gas inlet 26 is provided in the manifold 25, and a processing gas is supplied into the manifold 25 from the processing gas inlet 26. As shown in FIG. 5B, the processing gas 27 supplied from the processing gas inlet 26 into the manifold 25 flows through the protective tube 28 coaxially with the optical fiber core 20. The processing gas 27 flowing in the protection tube 28 is shown in FIG.
As shown in FIG. 7, the gas is ejected from a plurality of processing gas ejection ports 30 provided in a sleeve 29 attached to the optical fiber emission end.

FIGS. 6 (a) and 6 (b) show a more detailed configuration around the emission optical system fixing die 8b of the laser iron core automatic binding apparatus shown in FIGS. As shown in FIG. 6A, at the optical fiber output end, a sleeve 29 is inserted into the output optical system 10 and fixed to the output optical system 10 by a connection fitting 31 attached to the sleeve 29. A screw is formed at a contact portion between the inner surface of the connection fitting 31 and the outer surface of the emission optical system 10, and the connection fitting 31 is rotated to be screwed. Note that an O-ring 32 is mounted in the connection fitting 31. On the other hand, the emission optical system 10 is fixed by the locking nut 33 and the tongue washer 34 after being inserted into the emission optical system fixing mold 8b.

Here, in the emission optical system 10, FIG.
As shown in (a), a plurality of lenses 36 are provided, and a laser beam 35 emitted from the optical fiber core 20 of the optical fiber 3 is condensed and irradiated to the side of the motor core 5. A processing gas flow path 38 is provided around the lens 36 in the emission optical system 10, and a processing gas 37 ejected from a processing gas outlet 30 provided in a sleeve 29 at the optical fiber emission end is used for processing. After flowing through the gas flow path 38, it is blown from the tip of the nozzle 39 to the laser irradiation unit. Also,
As shown in FIG. 6B, a processing gas outflow groove 41 for flowing a processing gas ejected from the tip of the nozzle 39 is provided on the inner surface of the emission optical system fixing die 8b.

Next, the operation of the present embodiment having such a configuration will be described.

First, punching and lamination of a plate-shaped motor core material will be described. As shown in FIG. 2, the upper mold 7 is driven by a driving unit (not shown) such as a press.
When the upper mold 7 is inserted into the space 4 of the lower molds 8a and 8b, the motor core material 6 is punched by the edges of both the upper mold 7 and the lower molds 8a and 8b. The iron core members are sequentially stacked in the space 4 of the lower molds 8a and 8b.

Next, the binding of the core members laminated in the space 4 of the lower molds 8a and 8b will be described. As shown in FIGS. 1 and 2, the laser light oscillated in a pulse shape by the YAG laser oscillator 1 is split into a plurality of laser lights having uniform energy by a spectroscope 2. The light is incident on the corresponding optical fiber 3. Each laser light incident on the optical fiber 3 is transmitted to the corresponding emission optical system 10 incorporated in the emission optical system fixing die 8b, and the transmitted laser light is collected by the emission optical system 10. . That is, each laser beam transmitted by the optical fiber 3 is irradiated as a condensed beam 11 on the side surface of the motor core 5 laminated in the space 4 of the lower molds 8a and 8b by the emission optical system 10 and at least two beams are spot-welded. The binding between the two laminated core members is made.

More specifically, as shown in FIG. 3A, laser light 1 oscillated by a YAG laser oscillator 1
2 enters the spectroscope 2 provided below the reflection mirror 13 by the reflection mirror 13. The incident laser light is reflected by a total reflection mirror 15 which is driven by a servomotor 14 and repeats clockwise and counterclockwise rotations within a range of 90 degrees as shown in FIG. The light is incident on one of the spatial spectral units 16. In the space spectroscopy unit 16, the light sequentially passes through a plurality of partially transmitting mirrors 17 and a total reflection mirror 18 to be spatially split into a plurality of laser lights having the same energy. Each of these split laser beams is condensed by each of the fiber incident lenses 19 provided corresponding to each of the plurality of optical fibers 3, and is incident on the optical fiber core 20 of the corresponding optical fiber 3 and transmitted. .

In the driving unit such as a press, the YAG laser oscillator 1 and the spectroscope 2, the following control is performed based on the control system shown in FIG.

That is, as shown in FIG.
Generates a bottom dead center signal as a punching completion signal for the motor core material from the controller 22 based on the bottom dead center signal.
Sends a laser oscillation signal to the laser controller 23. Upon receiving the laser oscillation signal, the laser controller 23 controls the YAG laser oscillator 1 to send a pulse width of 5 ms and a pulse energy of 6 ms from the YAG laser oscillator 1.
A pulse laser of ~ 7J is oscillated at least once. After causing the YAG laser oscillator 1 to perform such oscillation, the control device 22 sends an optical path switching signal to the driver 24. When the driver 24 receives the optical path switching signal, the driver 24
The servo motor 14 (see FIG. 3B) is driven to rotate the total reflection mirror 15 (see FIG. 3B) by 90 degrees. Thereby, the optical path of the laser light is switched to the other spatial light splitting unit 16. When such switching is completed, an optical path switching completion signal is sent from the driver 24 to the control device 22. Based on this optical path switching completion signal, the control device 22 sends a laser oscillation signal to the laser controller 23 again, and causes the YAG laser oscillator 1 to oscillate laser light.

By performing the above-described control, one optical path switching and two laser oscillations are automatically performed for one punching operation of the motor core material. In one punching cycle, one YAG
Spot welding at many points using the laser light from the laser oscillator 1 can be easily realized.

In this embodiment, FIG.
As shown in (a) to (c), the processing gas supplied from the processing gas inlet 26 of the manifold 25 flows coaxially with the optical fiber core 20 in the protective tube 28 of a commercially available laser optical fiber, and emits the optical fiber. A plurality of processing gas jets 3 provided in a sleeve 29 attached to the end
Spouted from zero. Then, in a state where the optical fiber emission end is connected to the emission optical system 10, the processing gas 37 jetted from the processing gas jet port 30 as shown in FIG.
Flows through a processing gas channel 38 provided around the lens 36 in the emission optical system 10, and is blown from the tip of the nozzle 39 to the laser irradiation unit. The processing gas ejected from the tip of the nozzle 39 is, as shown in FIG. 6B, a processing gas outflow groove 41 provided on the inner surface of the emission optical system fixing die 8b.
Along the outside of the mold.

As described above, by making the processing gas flow through the protective tube 28 of a commercially available laser optical fiber, it is not necessary to separately provide a special pipe for supplying the processing gas, and the emission optical system is made of metal. The mold can be incorporated in a limited space in the mold, and the structure of the mold can be simplified. In addition, since the processing gas is blown from the tip of the nozzle 39 to the laser irradiation part, it is possible to prevent spatter and fumes generated at the time of laser irradiation from adhering to the lens 36 or the protective glass 40, and it is possible to continuously operate for a long time. The output optical system 10 can be prevented from being damaged during operation, and stable welding quality can be ensured. Furthermore, the provision of the processing gas outflow groove 41 allows a large amount of processing gas to flow smoothly outside the mold.

It is preferable that nitrogen is used as the processing gas flowing in the emission optical system 10 and the side surface of the motor core 5, so that the lens 36 in the emission optical system 10 can be used.
Of the motor core 5 and the laser irradiation area on the side of the motor core 5 are in an inert atmosphere to prevent welding oil remaining on the side of the motor core 5 from burning and prevent welding defects. Spot welding can be realized. In a preferred embodiment, a nitrogen gas converter for converting the atmosphere into nitrogen is used as a nitrogen gas supply source, and a nitrogen gas having a nitrogen concentration of 95% or more may be supplied as a processing gas.

In this embodiment, FIG.
As shown in (a), by attaching the O-ring 32 in the connection fitting 31, it is possible to prevent the connection portion between the optical fiber and the connection fitting 31 from being loosened due to vibration generated when the motor core material is punched. Further, the output optical system 10 is fixed to the output optical system fixing mold 8b by the locking nut 33 and the tongue washer 34, thereby preventing the output optical system 10 from being displaced due to vibration generated when the motor core material is punched. In addition, the welding quality can be ensured, and the working efficiency can be improved. FIG.
FIGS. 3A and 3B are cross-sectional views showing spot welding on the side of the motor core 5 by the laser core automatic binding apparatus shown in FIGS. 1 and 2.

As shown in FIG. 7 (a), spot welding on the side of the motor core 5 is, in principle, performed by using the focused beam 1 between at least two laminated core members 6 'after punching.
1 may be applied to bind the two, but there is a possibility that the laser irradiation part 42 of the condensed beam 11 may be displaced depending on the thickness tolerance of the iron core member 6 ′ or the inclination of the iron core. Therefore, as shown in FIG. 7B, even if the condensed beam 11 is applied to the center of the plate thickness of the iron core member 6 ', the laser irradiation unit using the condensed beam 11 can bind the motor core 5. The diameter of 42 spots (spot diameter) is preferably set to be equal to or greater than the thickness of the iron core member 6 '(that is, the motor iron core material 6).

Although the embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and various modified embodiments as described below are adopted. Is possible.

FIGS. 8A to 8C are views for explaining a modification of the connection between the optical fiber output end and the output optical system. In this modification, a connection mechanism that enables one-touch attachment / detachment is used instead of using a screw for connection between the optical fiber emission end and the emission optical system. As shown in FIG. 8A, the connection portion on the emission optical system side includes a spring retaining pin 43 provided on the exit optical system end 9 and a spring retaining pin 45 provided on the optical fiber fixing ring 44. Connected through. FIG. 8B is a view of the connection part on the side of the emission optical system shown in FIG. 8A viewed from below. As is apparent from this figure, the elastic force of the spring 46 is applied to the optical fiber fixing ring 44. Is constantly applying a left-turning force. However, when the exit optical system and the exit end of the optical fiber are not connected, the optical fiber fixing ring 4
4 is fixed by a fixing pin 48 urged by a spring 47.

With the lock pin 51 provided on the sleeve 50 at the optical fiber emission end aligned with the lock groove 49 provided on the optical fiber fixing ring 44, the sleeve 5
0 is inserted into the connection portion on the side of the output optical system,
Is pushed in, and the optical fiber fixing ring 44 rotates to the left. As a result, as shown in FIG. 8C, the lock pin 51 and the lock groove 49 are engaged with each other, and the optical fiber output end and the output optical system are connected to each other. On the other hand, when the optical fiber emission end is to be disconnected from the connection portion on the emission optical system side, the optical fiber fixing ring 44 is rotated clockwise. As a result, the fixing pin 48 is pushed out by the spring 47, and the sleeve 50 at the optical fiber output end is disengaged from the connection portion on the output optical system side. By adopting such a connection mechanism, attachment and detachment of the optical fiber emission end and the emission optical system can be performed with one touch, and workability at the time of connection between the optical fiber emission end and the emission optical system can be improved.

FIGS. 9A and 9B are diagrams for explaining a modification of the emission optical system. As shown in FIG.
A reflection mirror 52 for bending the laser light 35 emitted from the optical fiber core 20 by a predetermined angle (here, 90 degrees) is provided in an emission optical system 53 according to this modification. The laser beam 35 is focused by the plurality of lenses 36 after being bent by the reflection mirror 52.

By using such an emission optical system 53, a single press is used to perform punching for two motor cores, as shown in FIG. 9B. Two emission optical system fixed molds 8b, 8
Even when b 'approaches, the emission optical system 53 can be incorporated in the narrow portion between the emission optical system fixing molds 8b and 8b', and the space for the mold is reduced. be able to.

FIG. 10 is a view for explaining a modified example of how to attach the output optical system to the output optical system fixing mold.
In FIG. 10, the output optical system 10 is attached at an angle of about 15 degrees with respect to the normal direction of the side surface of the motor core 5.
This can prevent spatter and fumes generated during laser irradiation from entering the emission optical system 10 and adhering to a lens, a protective glass, and the like, reducing the number of maintenance operations on the emission optical system, and improving productivity and work efficiency. Can be improved. In addition, since the reflected light from the laser irradiation unit is prevented from returning to the lens and the optical fiber core by tilting the emission optical system 10 in this manner, stable welding quality can be secured. The mounting angle of the output optical system 10 is preferably about 0 to 30 degrees with respect to the normal direction of the side surface of the motor core 5.

FIG. 11 is a view for explaining a modification of the fixed mold for the emission optical system. As shown in FIG. 11, in this modification, a gas flow path 54 for flowing a large amount of gas such as air taken in from the outside is provided in the emission optical system fixing mold 8b, and the emission optical system fixing mold 8b is provided. A plurality of gas outlets 55 provided on the inner surface are sprayed on the side surfaces of the motor core 5. In this way, by blowing gas such as air on the side of the motor core 5, the oil adhering to the side of the motor core 5 is completely dried to prevent the occurrence of welding defects in the laser irradiation part, and high quality spot welding is performed. Can be realized.

FIGS. 12A and 12B are views for explaining a modification in which a power detector is mounted in the spectroscope and in the emission optical system.

As shown in FIG. 12A, in the spectroscope 2, a 1% transmission mirror 56 is disposed at a stage subsequent to the plurality of partially transmitting mirrors 17, and the transmitted light transmitted from the 1% transmission mirror 56 is transmitted. Power detector 5 at a position where it can receive light
8 is attached. The laser light that has entered the spectroscope 2 is introduced into one of the spatial spectroscopy units 16 by the total reflection mirror 15, then split by the plurality of partial transmission mirrors 17, and finally split by the 1% transmission mirror 56. And 1% of the total laser light transmitted light 57
Is irradiated on the power detector 58.

As shown in FIG. 12B, a 99% transmission mirror 59 is disposed between the optical fiber core 20 and the plurality of lenses 36 in the emission optical system 10.
A power detector 61 is mounted at a position where the light reflected by the 99% transmission mirror 59 can be received. The laser light introduced from the optical fiber core 20 into the emission optical system 10 is split by the 99% transmission mirror 59, and the reflected light 60 of 1% of the total laser light is irradiated on the power detector 61.

As described above, by attaching the power detectors 59 and 61 in the spectroscope 2 or the emission optical system 10, the transmission state of the laser beam can be monitored based on signals from these power detectors. By performing quality control on the motor core that has been bound, trouble spots can be found at an early stage.

[0041]

As described above, according to the present invention,
Since the motor core is automatically bound without forming a caulked portion inside the motor core, it is possible to avoid a decrease in motor efficiency due to plastic deformation of the caulked portion, which is a problem with the conventional caulking method, and Since the sheet pressure tolerance and the material of the iron core material do not affect the binding strength of the welded portion, it is not necessary to change the binding strength or fine-adjust the mold, thereby impairing productivity by the conventional method. Without this, it is possible to realize the manufacture of a motor core having stable quality. According to the present invention, particularly, the processing gas flowing through the processing gas supply means provided in the transmission means flows through the processing gas flow path provided in the emission optical system, and the motor core laminated in the female mold. Since the laser beam is sprayed on the laser irradiation portion on the side surface, it is possible to prevent the emission optical system from being damaged during continuous operation for a long time, and to secure stable welding quality. Further, according to the present invention, the processing gas flowing out of the emission optical system flows along the processing gas outflow groove provided on the inner surface of the female die along the side of the motor core laminated in the female die. Can smoothly flow out of the mold.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire configuration of an embodiment of a laser core automatic binding apparatus according to the present invention.

FIG. 2 is a view showing a configuration around a mold of the laser core automatic binding apparatus shown in FIG. 1;

FIG. 3 is a diagram showing a detailed configuration of a spectroscope of the laser core automatic binding apparatus shown in FIG. 1;

FIG. 4 is a block diagram showing a configuration of a control system of the laser core automatic binding apparatus shown in FIGS. 1 to 3;

FIG. 5 is a cross-sectional view showing a detailed configuration of an optical fiber of the laser core automatic binding apparatus shown in FIG.

FIG. 6 is a cross-sectional view showing a more detailed configuration around an emission optical system fixing mold of the automatic laser core bundling apparatus shown in FIGS. 1 and 2;

FIG. 7 is a cross-sectional view showing a state of spot welding on a motor core side surface by the laser core automatic binding apparatus shown in FIGS. 1 and 2;

FIG. 8 is a view for explaining a modified example of a connection portion between the optical fiber emission end and the emission optical system.

FIG. 9 is a diagram for explaining a modification of the emission optical system.

FIG. 10 is a view for explaining a modified example of how to attach the emission optical system to the emission optical system fixing mold.

FIG. 11 is a view for explaining a modification of the emission optical system fixing mold.

FIG. 12 is a diagram illustrating a modified example in which a power detector is mounted in the spectroscope and in the emission optical system.

FIG. 13 is a view for explaining an outline of a conventional motor core automatic binding method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 YAG laser oscillator 2 Spectroscope 3 Optical fiber 4 Space 5 Motor core 6 Motor core material 6 'Iron member 7 Upper mold 8a, 8b Lower mold 9 Emission optical system end part 10 Emission optical system 11 Condensed beam 12 Laser beam 13 Reflection mirror 14 Servo motor 15 Total reflection mirror 16 Spatial spectroscopy unit 17 Partial transmission mirror 18 Total reflection mirror 19 Fiber incident lens 20 Optical fiber core 21 Press 22 Controller 23 Laser controller 24 Driver 25 Manifold 26 Processing gas inlet 27 Processing gas 28 Protection Pipe 29 Sleeve 30 Processing gas spout 31 Connection fitting 32 O-ring 33 Lock nut 34 Tongue washer 35 Laser light 36 Lens 37 Processing gas 38 Gas flow path 39 Nozzle 40 Protective glass 41 Processing gas outflow groove 42 Laser illumination Projection part 43 Spring stop pin 44 Optical fiber fixing ring 45 Spring stop pin 46, 47 Spring 48 Fixing pin 49 Lock groove 50 Sleeve 51 Lock pin 52 Reflection mirror 53 Emission optical system 54 Gas flow path 55 Gas ejection port 56 1% transmission mirror 57 Transmitted light 58 Power detector 59 99% transmission mirror 60 Reflected light

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideyuki Shinaga Nagano 2121 Asahi-cho, Mie-gun, Mie Prefecture 2121 Nao, Toshiba Co., Ltd. (56) References 5-245158 (JP, A) JP-A-6-328278 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02K 15/02 B23K 26/00 310

Claims (3)

(57) [Claims] 1. A female and male die for punching a plate-shaped motor core material and laminating a plurality of the punched iron core members; a driving unit for driving at least one of the female and male die; A spectroscope that splits the laser light oscillated by the oscillator into a plurality of laser lights, a transmission unit that transmits each laser beam split by the spectroscope, and a transmission unit that is incorporated in the female mold and transmitted by the transmission unit. An emission optical system for performing welding by irradiating a laser beam to a plurality of points on a side surface of the motor core laminated in the female mold, wherein the transmission means includes a processing gas supply means for cooling the emission optical system. And a processing gas flow path for flowing a processing gas supplied from the processing gas supply means of the transmission means to a laser irradiation part on a side of a motor core laminated in the female mold in the emission optical system. A motor provided with a processing gas outflow groove on the inner surface of the female mold for flowing a processing gas flowing out of the emission optical system along a side surface of a motor core laminated in the female mold. Automatic core binding device. 2. The motor core automatic binding device according to claim 1, further comprising gas blowing means for blowing gas such as air to the side of the motor core laminated in the female mold. 3. The apparatus according to claim 1, wherein said spectroscope or said output optical system includes:
2. The motor core automatic binding apparatus according to claim 1, further comprising a detection unit for detecting a laser beam transmission abnormality.