JPS585579B2 - Laminated core manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated core manufacturing apparatus for manufacturing unit laminated cores used, for example, in motors, transformers, and the like.

In this type of laminated core, for example, a plurality of V-shaped engaging protrusions are stamped and formed on each core, and these engaging protrusions are fitted together to stack the cores together. In the production of such laminated cores, conventionally, the first
As shown in the figure, individual cores are punched out from a strip-shaped magnetic plate in the previous process and each has a plurality of V-shaped protrusions, for example, which are connected to each other in the length direction. The iron core a is passed between a die b and a punch d in a press device, and the punch d shears or punches each core, and a substantially U-shaped cooking chute is provided at the bottom of the die b. These punched iron cores are sequentially inserted into the sukkucking chute c, and the engaging protrusions formed on the respective iron cores are fitted into each other to stack the iron cores together. The sample is taken out from the apparatus through outlet C of C.

However, in such conventional laminated core manufacturing equipment, the engagement protrusions on each core are not fully engaged, but semi-fitted because they pass through a U-shaped scooking chute. Because the weight of the iron core stacked on top of the iron core is used to obtain the necessary pressing force, the stacking/gluing chute transport path is inevitably long, and the installation space occupied by the entire device becomes large. Rather than being limited by the installation location, by the time you notice an abnormality such as defective punched iron cores during press work, if there are already a large number of defective products stacked in the scooking chute c, stack them/ It is very troublesome to take out the iron core from the iron chute c, process it, and make it possible to send out a normal iron core, and it has been difficult to achieve savings through mass production.

The present invention has been made in view of the above-mentioned circumstances, and is formed by punching out a strip-shaped magnetic plate in a pre-process, and has a plurality of engagement protrusions each stamped and formed, and are connected to each other in the length direction. The cores are sheared or punched to separate them into individual cores, and the punched cores are pressed so that the engaging protrusions of each core fit into each other, and the cores are connected and fixed together and stacked. In a press device, each punched core is strongly held by frictional force at the bottom of a die base that holds a die provided on the bolster of this press device, and then the punched core is pushed forward by the pressing force of a punch. A cylinder device having a removable holding device which engages the engaging protrusions with the iron cores to hold the iron cores in a connected and fixed stacked state, and has a support base which can be moved up and down below the holding device. , a detector for controlling the thickness of the unit laminated core is attached to a part of the cylinder device, and a cutter having knife-shaped cutters operated by the detector above and below the supports of the bolster. The present invention provides a laminated core manufacturing device in which a feeding cylinder device and a delivery cylinder device for unit laminated cores are arranged side by side, thereby manufacturing a unit laminated core of a standard length.

Hereinafter, the present invention will be described with reference to an illustrated embodiment.

In FIGS. 2 and 3, reference numeral 1 indicates each support of the press machine installed on the foundation 2, and a bolster 3 is installed horizontally on the top of each support 1. A die base 4 with a guide member 4a implanted thereon is placed on the bolster 3.

A die 5 is detachably attached to the die base 4, and a die head 7, which is integral with the press column 6 of the press device, is arranged directly above the die 5 so as to be movable up and down.

Further, at the bottom of this die head T, a punch 8 is installed so as to work together with the die 5 to shear a belt-shaped workpiece, ie, an iron core 9, into a prescribed shape, and to press it onto the previously sheared iron core. A stopper 10 is attached near the punch 8 so as to be retractable by a coil spring 11.

Incidentally, guide pins 12 are vertically provided on each die head 7 close to this stopper 10 so as to fit into each of the guide members 4a.

On the other hand, a holding device 13 is detachably provided at the lower part of the die base 4 by means of respective brackets 14.

That is, this holding device 13 is configured by elastically providing each end of each segmented arc-shaped band 13a to a mounting member 13c with a coil panel 13b interposed therebetween. The first sheared core 9 is held firmly enough to absorb the pressing force of the punch 8 by frictional force, and then the sheared core 9 is placed over the previously sheared core by the punch 8. By pressing, the engaging protrusions 9a are engaged with each other, and the cores are held in a stacked state in which the cores are connected and fixed to each other.

However, the laminated cores are not made to be in perfect contact with each other, and in order to make it easier to separate each unit of lamination later, approximately 0.
A gap of about 1 mm is provided.

Directly below this holding device 13, a cylinder device 16 having a support stand 15 is provided so as to be able to move up and down. A detector 17 is attached to detect the .

Further, a guide plate 1 is provided near the lower limit position of the support base 15.
8 is provided at an angle, and the unit laminated core 9 is
This allows it to be transported to the next process.

On the other hand, a cutter-equipped cylinder device 19 having a knife-edge-shaped cutter 19a is installed on the support 1 at a position raised from the lower limit position of the support base 15 by the unit laminated core dimension so as to be operable in the horizontal direction. A delivery cylinder device (hereinafter referred to as a pusher) 20 of a unit laminated core 9' whose tip end is set back from the tip of the cutter 19a by about 2/3 or more of the core diameter is arranged side by side.

The cylinder device 19 with a cutter and the feed cylinder device 20 are operated simultaneously by the signal from the detector 1T.
First, insert the cutter 19a between the cores at the unit lamination dimension position of the laminated iron core, and firmly separate the cores in the axial direction (lamination direction), and then use the pusher 20 to separate the separated units. The laminated core 9' is pushed out and delivered onto the guide plate 18.

The present invention has such a configuration, and therefore, the press device is now driven, and the iron core 9 is pressed by the cooperation of the die 5 and the punch 8.
When the cores 9 are continuously sheared, the engaging protrusions of the sheared cores 9 are fitted into each other in the holding device 13 as described above, and the stacked state is maintained so that the sheared iron cores 9 are kept in the holding device 13. Support stand 1 rising to just below the bottom
5.It is placed quietly on the top without receiving any impact.

When the supporting base 15 descends to the lower limit position preset by the cylinder device 16 as the core is continuously stacked, that is, when the core reaches the thickness of the unit laminated core 9', the supporting base 15 detects the The detector 17 is actuated, and the cutter-equipped cylinder device 19 and the pusher 20 are actuated by the signal from the detector 11.

That is, this cutter-equipped cylinder device 19 inserts a knife edge-shaped cutter 19a into the unit laminated core dimension position of the laminated core, removes the retaining protrusions 9a between the cores, separates the unit laminated core 9' in the axial direction T, and then pushes the -20
The separated unit laminated cores 9' are pushed out and sent onto the guide plate 18.

Also, when the pusher 20 moves back and returns to its original position,
The support table 15 is raised to a predetermined position by the operation of the cylinder device 16, and at the same time, the cylinder device with cutter 19 returns to place the core group stacked in the holding device 13 on the support table 15 again. do.

In this way, the above-mentioned operation is repeated and continued until the guide plate 18
Unit laminated cores 9' are sequentially sent out on top.

In addition, the cylinder device 19 with a cutter and the pusher 20
It is not necessary to operate them at the same time, but after the cylinder device with a cutter 19 is activated, there is a slight time lag, or after it is confirmed that the cutter 19a of the cylinder device with a cutter 19 has reached its limit, the push button can be activated. -2
0 may be activated.

Further, the thickness of the unit laminated core 9' can be easily adjusted by changing the lower limit position of the support stand 15 and the position of the detector 17.

As described above, according to the present invention, it can be configured to be smaller in bulk than conventional devices of this type, so there is no risk of being limited in the installation space of the entire device. 9' is unitized and transported to the next processing process, not only can mass production save labor, but if a defective core occurs for some reason, it can be removed immediately. Further, it has excellent effects such as being able to easily adjust the dimensions of the unit laminated core.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing only the main parts of a conventional laminated core manufacturing apparatus, Fig. 2 is a cross-sectional view of a laminated iron core manufacturing apparatus according to the present invention, and Fig. 3 is an oblique view of the main parts of the present invention. FIG. 1... Support column, 3... Bolster, 4... Die base, 5... Die, 6... Press column, 7...
Die head, 8... punch, 9... iron core, 9'...
・Unit laminated core, 13... Holding device, 15... Support stand, 16... Cylinder device, 17... Detector, 1
9... Cylinder device with cutter, 20... Delivery cylinder device.

Claims (1)

[Claims] 1. In the previous process, the cores, which are punched out from a strip-shaped magnetic plate and have a plurality of retaining protrusions that are punched out and are connected to each other in the length direction, are sheared or punched out into individual cores. A die provided on the bolster of this press device is held in a press device that divides the cores, presses these punched cores so that the retaining protrusions of the cores fit together, and laminates the cores together. The die base is detachably provided at the bottom of the die base, and each punched core is strongly held by frictional force, and then the punched core is connected to the engaging protrusion of the previous core by the pressing force of the punch. a holding device that fits together and holds the cores in a stacked state;
A cylinder device having a support stand disposed directly below the holding device and movable up and down; a detector attached to a part of the cylinder device so as to control the thickness of the unit laminated core; The detector is actuated by this detector, and is equipped with a cylinder device equipped with a cutter and a unit laminated core delivery cylinder device having knife-edge cutters arranged horizontally above and below the supports of the bolster. A laminated iron core manufacturing device featuring: