JPH11354357A - Sheet core supply mechanism for laminated core manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve quality and uniformity of small transformers, etc., by taking out a sheet core one by one from a stocker part with sure while flawing of the sheet core is prevented. SOLUTION: A sheet core supply mechanism 1 comprises a stocker part 2 where sheet cores Cs... are housed in stack, and takes the sheet core Cs out of the stocker part 2 one by one by moving a take-out member 3 and supplies it to the next process. Here, at least a load applying mechanism part 4 is provided wherein a specified load F is applied from above to the sheet cores Cs... housed in the stocker part 2 in a load application setting period Tw, from just before start of taking out of the sheet core Cs till just after start of the taking out, while application of the load F is released in a movement period Tm of the take-out member 3 in period other than the load application setting period Tw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet core feeding mechanism of a laminated core manufacturing apparatus for taking out sheet cores one by one from a stocker section.

[0002]

2. Description of the Related Art FIG. 7 shows a small communication transformer 70 using a plurality of sheet cores Cs. Reference numeral 71 denotes a coil bobbin. As shown in FIG.
The bobbin main body 71a has a core housing portion 72 formed in a tubular shape with a rectangular cross section, and bases 71b and 71c extending outward in the axial direction from lower ends of both ends of the bobbin main body 71a. From multiple leads 73 ...
Protrudes. A coil 74 is wound around the outer peripheral surface of the core accommodating portion 72, and a wire end derived from the coil 74 is connected to leads 73. On the other hand, the sheet core Cs is formed in an E-shape as shown in FIG. 6, and has an insertion portion Csi inserted into the core housing portion 72 at an intermediate portion. This sheet core Cs
Constitutes the laminated core C by alternately inserting the set number of sheets from the openings at both ends of the core housing section 72.

When such a small transformer 70 is manufactured by an automatic process, a sheet core Cs supplied from a sheet core supply mechanism is supplied from both sides to a core accommodating portion 72 of a coil bobbin 71 set at a predetermined set position. A laminated core manufacturing apparatus for manufacturing a laminated core C by alternately inserting the laminated cores C one by one is used. The sheet core supply mechanism includes a stocker unit for stacking and storing the sheet cores Cs... By moving the take-out member.
s is taken out one by one and the next step, namely, the coil bobbin 71
And a function of supplying the sheet core Cs to the sheet core insertion mechanism.

[0004]

However, the above-mentioned conventional sheet core supply mechanism employs the sheet core Cs formed by hot rolling a material of the sheet cores Cs, in particular, a permalloy material.
When s is used, there is a problem that the following inconvenience occurs.

First, since the sheet cores Cs are light and thin, the total weight is 70 even when about 1000 sheets are stacked.
[G] and only one sheet core Cs
Has a tolerance of about 0.005 to 0.01 [mm], so it cannot be taken out one by one from the stocker.

Second, since the sheet cores Cs are easily damaged and bendable, the thin sheet cores Cs are damaged or bent so that the magnetic properties are directly affected. It causes a decline.

The present invention has been made to solve the problems existing in the prior art, and it is possible to reliably take out the sheet cores one by one from the stocker portion, and to prevent the sheet cores from being damaged to reduce the size. It is an object of the present invention to provide a sheet core supply mechanism of a laminated core manufacturing apparatus that can contribute to improving the quality and homogeneity of a transformer or the like.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a stocker unit 2 for stacking and accommodating sheet cores Cs.
When the sheet core Cs is taken out of the stocker unit 2 one by one by moving the take-out member 3 and supplied to the next step, the sheet core supply mechanism 1 of the laminated core manufacturing apparatus M is configured. During the load application setting period Tw immediately before the start of unloading to immediately after the start of unloading,
A predetermined load F is applied to the sheet cores Cs... Accommodated in the stocker unit 2 from above, and a load application that cancels the application of the load F during the movement period Tm of the unloading member 3 other than the load application setting period Tw. It is characterized in that a mechanism section 4 is provided.

In this case, according to a preferred embodiment, the load imparting mechanism 4 includes a weight 5 placed on the sheet cores Cs... Accommodated in the stocker 2 and a lifting mechanism 6 for lifting and lowering the weight 5. Prepare. The load imparting mechanism 4 has a predetermined play S between the weight 5 and the elevating mechanism 6 in the elevating direction, and detects a relative position of the weight 5 with respect to the elevating mechanism 6 by the sensor unit 7. By controlling the driving of the portion 6, the load F of the weight 5 is obtained.
The control unit 8a gives only the sheet cores Cs..., And the sensor unit 9 detects that the take-out member 3 has moved a predetermined distance Ls after the start of take-out. Are each provided with a control function unit 8b that raises the height by a predetermined height. Note that the sheet cores Cs can be sheet cores formed of permalloy material.

Thus, in the load application setting period Tw immediately before the sheet core Cs is taken out and immediately after the sheet core Cs is taken out, a predetermined load F is applied to the sheet cores Cs contained in the stocker unit 2 from above. Therefore, even the light and thin sheet core Cs formed of the permalloy material can be reliably taken out of the stocker unit 2 one by one. In addition, during the movement period Tm of the take-out member 3 other than the load application set period Tw, the application of the load F is released, so that the sheet core Cs is not pressed against the moving take-out member 3 and the seat core Cs is pressed. Is prevented from being damaged.

[0011]

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

First, an overall configuration of a laminated core manufacturing apparatus M including the sheet core supply mechanism 1 according to the present embodiment will be described with reference to FIG.

The laminated core manufacturing apparatus M is roughly divided into a pair of left and right sheet core supply mechanisms 1 and 1s and a sheet core packing mechanism 100. The sheet core packing mechanism 100 further includes a coil bobbin holding mechanism disposed at the center. It comprises a mechanism 101 and a pair of left and right sheet core insertion mechanisms 102 and 102s arranged on both sides of the coil bobbin holding mechanism 101. In addition,
The configurations of the sheet core feeding mechanisms 1 and 1s arranged on the left and right, and the configurations of the sheet core insertion mechanisms 102 and 102s can be the same except that they are configured symmetrically.

When the coil bobbin 71 on which the coil is wound by the automatic winding device (not shown) is set on the coil bobbin holding mechanism 101, the coil bobbin 7
1 is held in place. When one sheet core Cs is supplied from one sheet core supply mechanism 1 to the sheet core insertion mechanism 102, the sheet core insertion mechanism 102
Inserts the supplied sheet core Cs into the coil bobbin. Next, when one sheet core Cs is supplied from the other sheet core supply mechanism 1s to the sheet core insertion mechanism 102s, the sheet core insertion mechanism 102s inserts the supplied sheet core Cs into the coil bobbin. By such an operation, the set number of sheet cores C with respect to the coil bobbin
are alternately inserted from the left and right sides, and the laminated core C (small transformer 70) shown in FIG. 7 is manufactured.

Next, a specific configuration of the sheet core supply mechanism 1 according to the present embodiment will be described with reference to FIGS.

Numeral 11 denotes a fixed base portion. As shown in FIG. 3, a channel-shaped guide rail portion 12 for guiding the sheet core Cs to be transferred is provided on the upper surface, and a center of the guide rail portion 12 is provided. Is provided with a slit-shaped take-out member guide portion 13. The extraction member guide portion 13 penetrates through the upper and lower surfaces of the base portion 11, and the upper portion of the extraction member 3 is accommodated from below. As shown in FIG. 2, the take-out member 3 has an upper surface 3u formed by a flat horizontal surface, and a step surface portion 15 is cut out at the tip of the upper surface 3u via a step. The take-out member 3 is a take-out member guide portion 13.
And the upper surface 3u is mounted on the guide rail 1
In addition to being located above the second rail surface 12r, the step surface portion 15 is located below the rail surface 12r.

The take-out member 3 is connected to the advance / retreat moving mechanism 16. The reciprocating mechanism 16 includes a servomotor 17 and a ball screw mechanism 18 that is driven to rotate by the servomotor 17. The ball screw mechanism 18 includes a ball screw 18a and a ball nut 18b screwed to the ball screw 18a. One end of the ball screw 18a is connected to the rotating shaft of the servomotor 17, and the ball nut 18b connects the link 19. Take-out member 3
To join. The servomotor 17 includes the servomotor 1
7, a rotary encoder 20 for detecting the number of rotations is provided, and the rotary encoder 20 is connected to the control unit 21. As a result, the drive of the servomotor 17 is controlled by the control unit 21. After the start of taking out the sheet core Cs, the rotary encoder 20 moves the take-out member 3 for a predetermined distance Ls.
It functions as the sensor unit 9 that detects that the object has moved.

On the other hand, at a predetermined position on the upper surface of the base portion 11,
A stock cartridge 2c for accommodating a large number of sheet cores Cs in a stacked manner is provided. The stock cartridge 2c has a sheet core accommodating portion 2s having a rectangular cross section for guiding the stacked sheet cores Cs... In the vertical direction. The upper and lower ends of the sheet core accommodating portion 2 s are open, and when set on the base portion 11, the lower end communicates with the guide rail portion 12 to form the stock portion 2. In addition, a regulating member 31 is provided in front of the stocker unit 2. The regulating member 31 is attached to and detached from the upper surface of the base portion 11 by attaching and detaching screws 32. The lower portion of the regulating member 31 serves as a regulating portion 31s, and the lower surface of the regulating portion 31s is located at an intermediate position of the second sheet from the bottom with respect to the sheet cores Cs stacked on the stocker portion 2, and the regulating portion 31s.
Is in contact with or close to the lower surface of the stock cartridge 2c, and the rear surface facing the sheet cores Cs... Is continuous with the inner surface of the sheet core accommodating portion 2s in the stock cartridge 2c. Note that a sensor unit 4 that detects that the sheet core Cs has been supplied is provided at the front end of the upper surface of the base unit 11.
1 is arranged. This sensor section 41 is an air cylinder 42c.
The lifting / lowering unit 42 using the lifting / lowering unit 42 detects the presence / absence of the sheet core Cs by descending, and after detection, rises and stands by at the home position. When the sensor unit 41 waits upward, the feed lever 43 for feeding the sheet core Cs to the next process is allowed to move forward and backward.

On the other hand, a load applying mechanism 4 is provided near the stock cartridge 2c. The load applying mechanism unit 4 includes:
Sheet core Cs stored in stock cartridge 2c
And a lifting mechanism 6 for lifting and lowering the weight 5. The weight 5 is formed, for example, in the shape of a square rod having a weight of about several hundred [g], has a resin portion 5r at the lower end in contact with the upper surface of the sheet core Cs. Supports 5s
Having. On the other hand, the lifting mechanism 6 is fixed to the base 50.
On the upper surface of the base portion 50, two guide rods 51 and 52 arranged in parallel are raised in the vertical direction, and the upper ends of the guide rods 51 and 52 are connected to the head portion 53. The slider 54 is supported by the guide rods 51 and 52 so as to be able to move up and down. A servo motor 55 is mounted on the base 50. A drive pulley 56 is mounted on the rotary shaft of the servomotor 55, and an idle pulley 57 is provided on the head 53, and an endless timing belt 5 is provided between the idle pulley 57 and the drive pulley 56.
8 to constitute a transmission mechanism. The timing belt 58 is fixed to the slider 54. Thus, when the servo motor 55 is operated, the timing belt 58 is moved by the rotation of the driving pulley 56, and the slider 54 is moved up and down. The servo motor 55 has a rotary encoder 5 for detecting the rotation speed of the servo motor 55.
The rotary encoder 59 and the servomotor 55 are connected to the control unit 21.

The slider 54 has a weight 5
A pair of arms 60 projecting to the side are attached. The pair of arms 60 are arranged so that the supported portion 5s of the weight 5 is sandwiched between both ends. The positions of the arms 60 are adjustable. In addition, a pair of pins 61...
Each of the pair of arm portions 60 is provided with a vertically long slot 62 for accommodating the pin 61. Thereby, a play S in the elevating direction is provided between the weight 5 and the elevating mechanism 6.
Is provided. A sensor unit 7 for detecting the relative position of the weight 5 with respect to the lifting mechanism 6 is provided between the weight 5 and the lifting mechanism 6. The sensor unit 7 includes a slider 54
, And a shutter section 64 provided on the weight 5. The relative position of the weight 5 is detected by blocking or opening the optical path of the photosensor section 63 by the shutter section 64. This photo sensor section 63
Is connected to the control unit 21.

Accordingly, the relative position of the weight 5 with respect to the lifting mechanism 6 is detected by the sensor unit 7, and the servo motor 55 of the lifting mechanism 6 is controlled by the control unit 21, so that only the load of the weight 5 is detected. Are provided to the sheet cores Cs. The sensor unit 9 detects a predetermined distance Ls at which the takeout member 3 moves forward after the start of takeout, and the control unit 21 controls the drive of the servomotor 55 of the elevating mechanism unit 6 so that the weight 5 is set to a predetermined value. The control function portion 8b is configured to rise in height, that is, the height at which the lower end of the resin portion 5r of the weight 5 is separated from the upper surface of the sheet cores Cs.
In this case, the section in which the extraction member 3 moves by the predetermined distance Ls is
This corresponds to a load application setting period Tw from immediately before the start of taking out the sheet core Cs to immediately after the start of taking out the sheet core Cs. Therefore, in the load application setting period Tw, only the load F of the weight 5 is applied to the sheet cores Cs... Accommodated in the stock cartridge 2c from above. Also, the load application setting period Tw
During the movement period Tm of the take-out member 3 other than the above, the control for canceling the application of the load F is performed.

Next, the operation of the sheet core feeding mechanism 1 according to this embodiment will be described with reference to FIGS.

First, the stock cartridge 2c containing a large number of sheet cores Cs is set on the upper surface of the base portion 11. At this time, when the slider 54 is raised and the stock cartridge 2c is set, the weight 5 is inserted into the sheet core accommodating portion 2s of the stock cartridge 2c from above.

At this time, the relative position of the weight 5 with respect to the lifting mechanism 6 is detected by the sensor unit 7, and the pins 61 of the weight 5 are inserted into the elongated holes 62 provided in the arm unit 60 by the control function unit 8a. Is controlled to be located at an intermediate position of That is, if the optical path of the photo sensor unit 63 is blocked by the shutter unit 64, the control unit 21 controls the drive of the servo motor 55 to lower the slider 54, and the optical path of the photo sensor unit 63 moves away from the shutter unit 64. If released, the control unit 21 performs control to stop the servomotor 55. At the position where it stopped at this time,
The pins 61 are located at intermediate positions of the long holes 62. Therefore, only the load F of the weight 5 is always the sheet core Cs ...
Is given to

When taking out the sheet core Cs, the servo motor 17 is driven and the take-out member 3 is advanced.
In this case, when the servomotor 17 operates, the ball screw portion 18a rotates, the ball nut portion 18b moves forward, and the take-out member 3 moves forward via the link portion 19.
At this time, since the rotation speed of the servo motor 17 is detected by the rotary encoder 20 (sensor unit 9), the control unit 21 monitors the rotation speed, and drives the servo motor 55 when the rotation speed reaches a preset rotation speed. By controlling, the weight 5 is raised to a predetermined height. In this case, the preset number of rotations corresponds to a predetermined distance Ls (for example, about 1 [mm]) in which the extraction member 3 advances from the extraction start position (home position), as shown in FIG. The fixed distance Ls corresponds to a load application setting period Tw immediately before the start of taking out the sheet core Cs to immediately after the start of taking out. Also,
The predetermined height at which the weight 5 is raised is selected such that the lower end of the resin portion 5r of the weight 5 is separated from the upper surface of the sheet cores Cs by about 5 mm. Therefore, in the load application setting period Tw, a constant load F based on the weight 5 is applied to the sheet cores Cs...
The application of the load F to s ... is released.

On the other hand, when the take-out member 3 moves forward, the rear end of the sheet core Cs located at the lowermost position becomes the step surface portion 1 of the take-out member 3.
5 and is pushed forward while being locked to the step formed by the step 5, and is transferred forward on the guide rail 12. The position of the second and lower sheet cores Cs from below is regulated by the regulating section 31s and the stocker section 2.
As described above, in the initial stage of taking out the sheet core Cs (load application setting period Tw), a constant load F is applied to the sheet cores Cs.
Even a relatively light and thin sheet core Cs formed by hot rolling permalloy material can be reliably taken out one by one.

Further, when the take-out member 3 moves forward and the sheet core Cs is transferred to the take-out position (supply target position) Po at the end of the guide rail portion 12, the control section 21 controls the servo motor 17 to drive in the reverse direction. Then, the takeout member 3 is returned to the home position. In this case, since the step surface portion 15 is not in contact with the lower surface of the sheet core Cs, only the extracting member 3 is returned. Then, when the take-out member 3 is returned to the home position, the control unit 21 drives and controls the servo motor 55 in the reverse direction to lower the weight 5 by the height that has been raised to the predetermined height. At this time, since the upper surface of the sheet cores Cs is at a position lowered by one sheet, the slider 54 also stops at a position lowered by one sheet based on the detection of the sensor unit 7. Thus, during the movement period Tm (FIG. 4) of the take-out member 3 other than the load application setting period Tw, the sheet core C
Since the application of the load F to s... is released, the pressing of the sheet core Cs against the moving takeout member 3 is avoided,
The sheet core Cs is prevented from being damaged.

Thus, the supply operation for one sheet core Cs is completed. It should be noted that the sheet core Cs is taken out at the extraction position P.
When the operation of sending out to o is completed, the sensor section 41 descends from the upper home position and detects the presence or absence of the sheet core Cs. At this time, if the sheet core Cs is detected, a supply end signal is given to the sheet core insertion mechanism 102, which is the next step, and the sensor unit 41 is returned to the home position. Then, after the feed lever 43 is lowered,
By moving forward, the rear end of the sheet core Cs is pushed and sent to the sheet core insertion mechanism 102 side. On the other hand, if the sheet core Cs is not detected, a notification that the sheet core Cs in the stocker unit 2 has ended is given.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment,
It is possible to arbitrarily change, add, or delete details, configurations, shapes, quantities, numerical values, and the like without departing from the spirit of the present invention. For example, during the load application setting period Tw, the extraction member 3
Is set based on the constant distance Ls at which the vehicle moves forward, but may be set based on time. In addition, the configuration of the load applying mechanism unit 4 may employ another configuration that exhibits the same function, such as hanging the weight 5 with a string. The material and the forming method of the sheet core Cs are not limited. Furthermore, the case where a constant load is applied to the sheet cores Cs... Accommodated in the stock portion 2 is shown. However, even if the magnitude of the load is changed according to the number of the sheet cores Cs. Good.

[0030]

As described above, the sheet core supply mechanism according to the present invention is arranged such that the sheet core accommodated in the stocker section is positioned at least from the time immediately before the start of the sheet core take-out to the time immediately after the start of the sheet take-out. In addition to applying a predetermined load, a load applying mechanism for canceling the application of the load is provided during the movement period of the take-out member other than the load application setting period, so that the following remarkable effects are obtained.

In the initial stage of taking out the sheet core (load application setting period), a predetermined load is applied from above to the sheet core accommodated in the stocker portion. Even a light and thin sheet core can be reliably taken out one by one.

During the moving period of the take-out member other than the load application setting period, the application of the load to the sheet core is released and the pressing of the sheet core against the moving take-out member is avoided, so that the seat core is prevented from being damaged. This can contribute to improving the quality and homogeneity of a small transformer or the like.

[Brief description of the drawings]

FIG. 1 is a front configuration diagram of a main part in a sheet core supply mechanism according to an embodiment of the present invention,

FIG. 2 is a front configuration diagram of another main part of the sheet core supply mechanism,

FIG. 3 is a side cross-sectional view including a take-out member and peripheral components used in the sheet core supply mechanism;

FIG. 4 is a diagram illustrating the operation of the sheet core supply mechanism.

FIG. 5 is a front configuration diagram showing the entire laminated core manufacturing apparatus including the sheet core supply mechanism,

FIG. 6 is a plan view of a sheet core supplied by the sheet core supply mechanism and a coil bobbin into which the sheet core is inserted;

FIG. 7 is a front sectional view of a small transformer using a sheet core supplied by the sheet core supply mechanism.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sheet core supply mechanism 2 stocker section 3 take-out member 4 load applying mechanism section 5 weight 6 lifting mechanism section 7 sensor section 8a control function section 8b control function section 9 sensor section M laminated core manufacturing apparatus Cs sheet core Tw load setting period Tm Moving period F Predetermined load S Predetermined play Ls Fixed distance

Claims (5)

[Claims] 1. A sheet core supply mechanism for a laminated core manufacturing apparatus, comprising a stocker section for stacking and storing sheet cores, and moving a take-out member to take out sheet cores one by one from the stocker section and supply the sheet cores to a next process. In, at least during the load application setting period immediately before the start of the sheet core take-out immediately after the start of the take-out, while applying a predetermined load from above to the sheet core accommodated in the stocker portion, the above-mentioned in other than the load application setting period A sheet core supply mechanism for a laminated core manufacturing apparatus, comprising: a load application mechanism that releases the application of the load during a movement period of an extraction member. 2. The laminated core according to claim 1, wherein the load imparting mechanism includes a weight placed on a sheet core accommodated in the stocker, and a lifting mechanism moving the weight up and down. Sheet core supply mechanism for manufacturing equipment. 3. The load applying mechanism has a predetermined play in the elevating direction between the weight and the elevating mechanism, and detects a relative position of the weight with respect to the elevating mechanism by a sensor unit. 3. The vehicle according to claim 2, further comprising a control function unit configured to apply only the load of the weight to the seat core by controlling the driving of the mechanism unit.
A sheet core supply mechanism of the laminated core manufacturing apparatus described in the above. 4. The load applying mechanism unit detects by a sensor unit that the take-out member has moved a predetermined distance after the start of take-out, and controls the drive of the elevating mechanism unit so as to raise the weight by a predetermined height. 3. The sheet core supply mechanism of the laminated core manufacturing apparatus according to claim 2, further comprising a control function unit for raising the sheet core. 5. The sheet core supply mechanism according to claim 1, wherein the sheet core is formed of a permalloy material.