JP4485127B2 - Progressive die apparatus and press working method using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a progressive die apparatus and a press working method using the same, and in particular, a progressive mold apparatus that can be optimally applied when a large punched piece (for example, a stator) is manufactured using a thin punched plate. And a press working method using the same.
[0002]
[Prior art]
In the progressive die apparatus, a desired punched piece, for example, each part of an iron core piece is sequentially punched from a punched plate that has been intermittently fed, and the outer shape is cut out and separated from the punched plate, and the iron core pieces are caulked and laminated.
By the way, when the iron core piece to be formed by punching becomes large, naturally the plate width of the punched plate becomes wide and the central portion in the width direction droops. In particular, the punched plate after the respective portions are sequentially punched and the outer shape is punched, that is, a so-called skeleton (frame), hangs down and hits the punched pieces that are punched into the die and stacked, and cannot be intermittently fed.
As a countermeasure against this, a conventional progressive mold apparatus has been proposed in which a lifter that can be moved in and out is provided at each station as disclosed in Patent Document 1, for example.
[0003]
[Patent Document 1]
JP-A-11-104897 [0004]
[Problems to be solved by the invention]
However, in the case of a motor core or the like, the punching pieces may be rotated and stacked or skewed at the outer shape punching station, so that the lifter cannot be provided within the die (outer shape die). It may not be possible to prevent the skeleton from getting caught. For example, in a station for extracting an iron core piece having a large diameter, there is a problem that the skeleton is caught and cannot be sent out, and the progressive die apparatus cannot be operated, or the productivity of the punching work is greatly reduced.
An object of the present invention is to provide a progressive die apparatus capable of smoothly intermittently feeding a skeleton at an outer shape punching station and a press working method using the same even when a large punched piece is formed.
[0005]
[Means for Solving the Problems]
The progressive die apparatus according to the first invention that meets the above-mentioned object sequentially punches and forms the punched plate that is intermittently fed into a desired shape, and separates the punched piece from the punched plate at the external punching station. Mold device,
Installed on both sides of the outer shape punching station is a platform having an inclined surface with the upstream side of the punched plate lowered, and further, the outer shape punching of the punched plate intermittently fed to the upstream side of the outer shape punching station. Opening stations are provided for forming laterally open openings on both sides in the width direction of the punched plate.
[0006]
Further, the progressive mold apparatus according to the second invention is the progressive mold apparatus according to the first invention, wherein the ramp has the inclined surface facing the outer shape die of the outer shape station, and the outer shape die. Removably installed on the outside.
[0007]
The press working method according to the third invention is a press working in which punched plates sent intermittently are sequentially punched and formed into a desired shape, and are cut from the punched plate at an outer shape punching station to form punched pieces. In the method
On both sides of the outer shape punching station, a platform having an inclined surface with the upstream side of the punched plate lowered is installed. An opening punching station provided on the upstream side of the outer shape punching station, both sides in the width direction of the punched plate A side opening is formed in which the platform is inserted, and when the outer shape is processed at the outer shape removal station, the operation is performed by inserting the platform into the opening, and the processing of the outer shape station is completed. Thereafter, the punched plate from which the punched pieces are separated is transported in a state where the punched plate is mounted on the platform.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
FIG. 1 is a schematic plan view of a progressive mold apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of an outline drawing station of the progressive mold apparatus, and FIGS. 3 (A) and 3 (B) are respectively the same progressive feed. It is explanatory drawing which shows the effect | action of a metal mold apparatus.
[0009]
As shown in FIG. 1, the progressive die apparatus 10 which concerns on one embodiment of this invention has the stations 1-6, and can manufacture the rotor laminated iron core of a motor, and a stator laminated iron core. Hereinafter, these will be described in order.
A punched plate (strip made of silicon steel plate) 11 is intermittently fed through the stations 1 to 6, and predetermined pressing is performed at the stations 1 to 6.
[0010]
In the station 1, the shaft hole 13 is formed in the center of the punched plate 11 in which the pilot hole 12 is previously formed. In the station 2, a caulking projection 14 is formed. This is for laminating the rotor 15.
[0011]
In the station 3, the outer shape of the rotor 15 is removed, and openings 16 and 17 are formed on both sides of the punched plate 11. In this case, the openings 16 and 17 are laterally open, but may be formed in the punched plate 11 and closed around the periphery. Therefore, this station 3 also serves as an opening opening station.
In the station 4, slotting for forming the eight magnetic poles 19 of the stator 18 is performed. At the station 5, the caulking protrusion 20 of the stator 18 is formed.
[0012]
The station 6 is an outer shape punching station of the stator 18 which is an example of a punched piece. Here, the stator 18 is separated from the skeleton (a punched plate from which the punched piece has been removed) 21. The station 6 is provided with mounts 22 and 23 having inclined surfaces 22a and 23a in which the upstream side of the punched plate 11 is lowered. The planar dimensions of the mounts 22 and 23 are large enough to be accommodated in the openings 16 and 17, and as shown in FIG. 2 and FIG. Are inserted so that the punched plate 11 is placed on the outer die 24.
[0013]
Then, when the skeleton 21 whose outline has been removed at the station 6 is intermittently conveyed, the skeleton 21 immediately rides on the platform 22, 23 via the inclined surfaces 22 a, 23 a facing the outline die 24. As shown in FIG. 3 (B), the punched plate 11 is placed on the boarding platforms 22 and 23 and conveyed. In this embodiment, a known lifter pin 25 that moves up and down is provided on the upstream side of the station 6 to push up the punched plate 11 during intermittent transfer. As a result, even if the skeleton 21 punched out of the large-diameter stator 18 is bent, the board to be punched 11 is lifted from the outer die 24 by the mounts 22 and 23, and the lifter pin 25 assists. The cores 26 stacked on each other are smoothly caught intermittently without being caught.
[0014]
Here, in this embodiment, the skeleton 21 is lifted from the outer die 24 by the platform 22, 23 and conveyed by the known lifter pin 25, but depending on the shape of the skeleton 21, the lifter pin 25 can be omitted. Further, instead of the lifter pin, another platform can be arranged.
The inclination angle of the inclined surfaces 22a and 23a of the boarding bases 22 and 23 requires an angle at which the punched plate 11 rides on the inclined surfaces 22a and 23a with respect to the forward feed of the punched plate 11, and is usually about 10 to 40 degrees. It is preferable to set to.
[0015]
Further, in this embodiment, the mounts 22 and 23 are fixed to the outer side of the outer shape die 24 as shown in FIG. 2, but the installation is detachable. You may arrange | position in the center side (width direction center position of the to-be-punched board 11). In this case, the stripper 27 is provided with a space for storing the board 22 (23) protruding on the outer die 24.
In addition, the platform may be supported by a spring from below and the platform may be lowered when the stripper is lowered.
[0016]
【The invention's effect】
As is apparent from the above description, the progressive die apparatus according to claims 1 and 2 and the press working method according to claim 3 have a platform for lifting the punched plate at the time of conveyance on both sides of the outline punching station. Therefore, when the skeleton is sent out after the outer shape is removed, the skeleton immediately climbs onto the platform and can be intermittently fed without being caught by the laminate stacked on the outer shape die. There are effects such as being made.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a progressive mold apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of an outer shape extraction station of the progressive die apparatus.
FIGS. 3A and 3B are explanatory views showing the operation of the progressive die apparatus, respectively.
[Explanation of symbols]
10: progressive die apparatus, 11: punched plate, 12: pilot hole, 13: shaft hole, 14: projection for caulking, 15: rotor, 16, 17: opening, 18: stator, 19: magnetic pole, 20: caulking Protrusions, 21: Skeleton, 22, 23: Riding platform, 22a, 23a: Inclined surface, 24: Die-out die, 25: Lifter pin, 26: Core, 27: Stripper

Claims (3)

In a progressive mold apparatus for sequentially punching and forming punched plates that are sent intermittently into a desired shape and cutting a punched piece from the punched plate at an outer shape punching station,
Installed on both sides of the outer shape punching station is a platform having an inclined surface with the upstream side of the punched plate lowered, and further, the outer shape punching of the punched plate intermittently fed to the upstream side of the outer shape punching station. progressive mold apparatus according to claim sometimes that the opening of the lateral opening of the ride platform is fitted an opening vent station that forms on both sides in the width direction of該被punched plate.   2. The progressive die apparatus according to claim 1, wherein the ramp has the inclined surface facing an outer die of the outer punching station and is detachably installed on the outer side of the outer punching die. Progressive mold equipment. In the press working method in which the punched plate that is sent intermittently is punched and formed in a desired shape sequentially, and is cut from the punched plate at the outer shape punching station to form a punched piece,
On both sides of the outer shape punching station, a platform having an inclined surface with the upstream side of the punched plate lowered is installed. An opening punching station provided on the upstream side of the outer shape punching station, both sides in the width direction of the punched plate A side opening is formed in which the platform is inserted, and when the outer shape is processed at the outer shape removal station, the operation is performed by inserting the platform into the opening, and the processing of the outer shape station is completed. Thereafter, the punched plate from which the punched pieces are separated is conveyed in a state where the punched plate is mounted on the platform.

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