JPH07204764A - Device for discharging laminated iron core - Google Patents

Abstract

PURPOSE:To obtain a discharging device for laminated iron core, in which the laminated iron core is detected without erroneous detection and discharged from a receiving table and preventing the damages of a ram and the receiving table or a metallic mold device of punch, die, etc., by arranging a detector for side surface and a detector for lower surface of the laminated iron core. CONSTITUTION:In an apparatus for manufacturing the laminated iron core by punching out iron core pieces in the die and applying the load to the iron core pieces 20 from the side part with a side pressure cylinder 19 to fit the iron core pieces through a caulking part; the detecting instrument is constituted of the detector 22 for side surface of the laminated iron core arranged at the lower side surface of a descending holding cylinder 21 between the side pressing cylinder 19 and the receiving table 24, and the detector 23 for lower surface of the laminated iron core arranged on the lower surface of the receiving table 24. At the time of inputting the detected signal from the detector 22 for side surface and the detector 23 for lower surface, the discharging part is constituted with a controller 25 outputting a discharging signal and the discharging device 26 discharging the laminated iron core through the detected signal from the controller 25. By this constitution, even if the laminated iron core is bounced and slipped sideways at the time of dropping to the receiving table, the discharging device for laminated iron core without erroneous detection is obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispensing device for manufacturing a laminated core by a lateral pressure staking method.

[0002]

2. Description of the Related Art A laminated core is obtained by punching an iron core piece having a caulked portion formed in a predetermined pattern and punching the iron core piece through the caulking portion, and then sequentially fitting the pre-loaded iron core piece. Manufactured.

Punching and crimping the iron core pieces are usually performed at the final station of the progressive die machine. That is, an iron core piece is punched out by a punch and a die of the station, caulked in the die or in a cylinder following the die, successively laminated, and when the desired stacking thickness is reached, it is discharged to the outside of the apparatus.

The crimping and laminating means for the iron core pieces is a means for laminating the iron core pieces punched into the die by supporting the iron core pieces punched in the die by a pedestal connected to a power unit such as a cylinder and cooperating with the punching force of the punch. There is what is called the lateral pressure caulking method.

The present invention relates to the production of laminated cores by the lateral pressure staking method. The lateral pressure staking method uses an iron core piece punched in a die as described in Japanese Patent Publication No. 3-11855.
The iron core piece is constrained by applying force from the side edge through a cylinder having a diameter smaller than that of the iron core piece, and then the iron core piece that has been punched is fitted through the caulked portion and laminated in order. Such lateral pressure caulking does not require a power unit such as a cylinder for applying a caulking force, and has advantages such as simplification of the device and cost reduction.

[0006]

An iron core laminated by the lateral pressure caulking method passes through a cylinder having a narrow passage, for example, a squeeze ring and a cylinder having a diameter slightly larger than the outer diameter of the iron core, and is placed below the mold device. It falls on the installed cradle or conveyor and is transported to a predetermined place.

By the way, in the punching lamination of the iron core pieces, there is vibration caused by the punching operation of the punch and the die, and when the squeeze ring portion droops and shifts to a passing cylinder of a somewhat large diameter,
It often happens that one side moves a little faster, and it naturally falls with a biased bias. The falling point is the cradle or conveyor, but since there is oil on it, the laminated iron core slides sideways due to the bounce when falling.

On the other hand, the punched product detector is installed in the above-mentioned passing cylinder in the die apparatus, but the space is physically restricted, and the size of the punched article detector is required to maintain the strength of the apparatus itself. Be restricted. Such a detector has a limited field of view for detection and causes a detection error when the skid or the like occurs.

Without making a payment from the receiving table due to a detection error,
When the following iron core pieces are punched to manufacture a laminated iron core, the laminated iron core may come into contact with the laminated iron core on the pedestal, causing a so-called cylinder thrust to damage the pedestal, or damage the punch or die being punched.

The present invention does not have such a problem, and in the production of a laminated iron core by the lateral pressure caulking method, even if the laminated iron core slips sideways when it falls on the pedestal, the laminated iron core is not detected correctly. It is an object of the present invention to provide a laminated iron core dispensing device that can be detected without doing so and can prevent ejection of a delivery cylinder from the pedestal, damage to the pedestal, or damage to die devices such as punches and dies.

[0011]

SUMMARY OF THE INVENTION The gist of the present invention is an apparatus for manufacturing a laminated core by punching an iron core piece into a die and fitting a force from the side end to the iron core piece with a side pressure cylinder through a caulking portion. A detector on the side surface of the laminated core provided at the lower portion of the side surface of the lowering holding cylinder between the side pressure cylinder and the receiving table, a detector on the lower surface of the laminated core provided on the lower surface of the receiving table, and a side surface detector of the laminated core. It is a laminated iron core dispensing device including a control device that outputs a dispensing signal when a detection signal from a lower surface detector is also input, and a device that dispenses a laminated iron core according to a signal from the control device.

[0012]

According to the present invention, a detector for detecting the laminated core from the side is provided at the lower portion of the side surface of the descending support cylinder following the side pressure cylinder for caulking the punched iron core piece, and the lower surface of the cradle on which the laminated core falls. A detector is provided in the above, and when a detection signal from both of these detectors is input together, a control device that outputs a payout signal is provided to pay out from the cradle, so when the laminated iron core falls on the cradle. Even if the vehicle slips sideways, it can be detected without causing a detection leak and is delivered to the conveyance line. Thus, the laminated core can be smoothly manufactured without the cylinder thrust of the laminated core, the damage to the pedestal, and the damage to the die device such as the punch and the die.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the drawings based on an embodiment. In the drawing, 1 is a pilot hole punched in the first station 1S, and 2 is a skew hole.
It is a relief hole. Reference numeral 3 is a shaft hole punched by the second station 2S, and 4 is a slot. A die apparatus for punching these is shown in FIG. 2, where 5 is a pilot hole punch, 6 is a skew escape hole punch, 7 is an axial hole punch, and 8 is a slot punch.

Reference numeral 9 denotes a caulking projection formed by the station 3S, and a part of the caulking projection 2 communicates with the skew escape hole 2. In the station 3S, the first core piece 10 is laminated.
In place of the caulking projection 9, a caulking through hole 11 is formed by lengthening the protrusion of the caulking punch 12. The formation of the caulking projection 9 and the caulking through-hole 11 is switched by changing the protruding length of the tip of the caulking punch 12 from the lower surface of the stripper 13. The mechanism is as follows in this embodiment.

A slide plate 15 having a recess 14 is slidably provided on the rear side of the base end of the caulking punch 12, and the slide plate 15 is slid by an advancing / retracting device 16 so that the caulking punch 12 is inserted into the recess 14. When the base ends are engaged, the caulking punch 12 has a shorter protruding length from the lower surface of the stripper 13 and forms the caulking projection 9. Also, slide plate 1
When 5 is slid and disengaged, the protruding length of the caulking projection punch 12 increases, and the caulking through hole 11 is formed. The caulking projection 9 and the caulking through hole 11 are shown in FIG.

The next fourth station 4S is a play station.
It is an option. In the fifth station 5S, the core piece 10 is punched from the metal plate T into the die 18 by the punch 17 and is caulked and laminated. The caulking lamination is performed by a side pressure cylinder 19 provided following the die 18, for example, a squeeze ring whose expansion and contraction can be adjusted, and a cylinder whose pressing plate can move back and forth in the cylinder.

The side pressure cylinder 19 has a diameter slightly smaller than the outer diameter of the punched iron core piece 10, and exerts a restraining force from the side edge on the iron core piece 10 that is drawn into the die 18 and successively descends, and the iron core concerned. The caulking is carried out through a caulking projection 9 formed on one side and a hole or a caulking through hole 11 formed on the back surface thereof.

The iron core 20 which is caulked and laminated while passing through the die 18 or the side pressure cylinder 19 hangs down to a descending holding cylinder 21 having a diameter somewhat larger than the diameter of the iron core piece 10, for example, a holder-support. Reference numeral 22 denotes a laminated core detector provided at a lower portion of the side surface of the descending holding cylinder 21, which detects the laminated core 20 which is descending or reaches the pedestal 24 from the side surface. 23 is a cradle 2
In the laminated core detector provided in the lower part of 4, the laminated core 20 is provided within a range where the laminated core 20 slides sideways at the time of drop landing.
0 is detected from the lower surface.

A payout controller 25 outputs a payout signal when the detection signal from the laminated core detector 22 on the side surface and the detection signal from the laminated core detector 23 on the lower surface are both input. If only one of the detection signals is input,
The payout signal is not output to prevent payout due to an erroneous signal. Thus, the laminated core detector 22 provided at the lower portion of the side surface of the descending holding cylinder 21 is provided with the laminated iron core 20 which is descending.
And outputs a detection signal thereof, and when the descending laminated iron core 20 falls on the pedestal 24, even if sideslip occurs for some reason, the laminated iron core detector on the lower surface provided at the bottom of the pedestal 24 Since it is detected at 23, and is ANDed with the detection signal, no detection error occurs.

Reference numeral 26 is a payout device, for example, a pusher, which pays out the laminated core 20 on the receiving table 24 to the conveyor 27 when a payout signal is inputted. In this embodiment, it is paid out from the front side of the paper to the back side.

[0021]

As described above, according to the present invention, when the iron cores laminated by the lateral pressure caulking are moved downward from the lateral pressure cylinder to the descending support cylinder and dropped onto the pedestal, they are skided due to vibration during bouncing or punching. Can be reliably detected without causing detection errors,
Further, since the payout is carried out according to the signal, there is no cylinder thrust and damage to the pedestal and the die can be prevented.

[Brief description of drawings]

FIG. 1 is a diagram showing punching of an iron core piece according to an embodiment of the present invention.

FIG. 2 is a diagram showing a laminated core die device according to one embodiment of the present invention.

FIG. 3 is a diagram showing a device for dispensing a laminated iron core according to an embodiment of the present invention.

FIG. 4 is a diagram showing a caulking projection and a caulking through hole of an iron core piece according to one embodiment of the present invention.

[Explanation of symbols]

 1 Pilot hole 2 Skew escape hole 3 Shaft hole 4 Slot 5 Pilot hole punch 6 Skew escape hole punch 7 Shaft hole punch 8 Slot punch 9 Caulking projection 10 Iron core piece 11 Caulking through hole 12 Caulking punch 13 Stripper 14 Concave 15 Slide Plate 16 Advance / Retract Device 17 Punch 18 Die 19 Side Pressure Cylinder 20 Laminated Iron Core 21 Drop Holding Cylinder 22 Detector 23 Detector 24 Cradle 25 Discharge Controller 26 Discharge Device 27 Transfer Conveyor

Claims (1)

[Claims] 1. An apparatus for manufacturing a laminated core by punching an iron core piece into a die and fitting the iron core piece with a side pressure cylinder from a side end to apply force to the iron core piece through a caulking portion to lower the space between the side pressure cylinder and a pedestal. A device for detecting the side surface of the laminated core provided on the lower side surface of the holding cylinder,
A device for detecting the lower surface of the laminated core provided on the lower surface of the pedestal, a control device for outputting a payout signal when the detection signals from the side surface detection device and the lower surface detection device of the laminated iron core are both input, and from the control device A laminated iron core dispensing device comprising: a device for dispensing a laminated iron core according to a dispensing signal.