JPS5952038B2 - Progressive press type - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a progressive repress die that sequentially and sequentially performs various press workings on a plate material.

Generally, this type of progressive repress mold contains
A punching station with hole punches of various shapes and punches for punching out external shapes, etc., and a cutting station with cutting blades are arranged in sequence, and the press operation moves the plate material one pitch at a time at the punching station. After punching, the plate material is cut into a finished product at a cutting station.

By the way, forming processes such as curving and bending cannot be carried out continuously with other processes while the plate material is being used, since slipping occurs in the plate material and causes dimensional deviations. Therefore, conventionally, this forming process is performed on a band-shaped plate that has been cut from the plate material at a cutting station. Therefore, in that case, a separate press mold for molding is required, and the number of steps also increases. The present invention has been made in view of this point, and a forming station is disposed following the above-mentioned cutting station, and a band-shaped plate cut from the plate material at the cutting station is placed in the forming station through a press operation. By automatically transporting the material using a cam mechanism that operates in accordance with the molding process,
It is an object of the present invention to provide a progressive repress mold that allows punching, cutting, and forming to be performed in series by one press operation.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

1 to 5, reference numeral 1 is an upper die, and hole punches 2, 2, 2 are provided at predetermined positions on the lower surface of the upper die 1 in the feeding direction of the plate material Al (from the left side to the right side in FIG. 1). An upper blade 3 having a cutting edge 3a is installed on the front side (on the right side in FIG. 1) of the hole punches 2, 2, 2. A drawing punch 4 is attached to the front side.

On the other hand, reference numeral 5 denotes a lower mold disposed facing below the upper mold 1, and in the lower mold 5, holes are formed at positions facing the hole punches 2, 2, 2 of the upper mold 1. Openings 6a, 6a,
A hole-making die 6 having a diameter of 6a is set, and the upper blade 3
There is a cutting edge 7a on the rear side (left side in Fig. 1) of the position facing the
A lower blade 7 is formed, and a drawing die 8 having an upper surface lower than the upper surfaces of the hole-making die 6 and the lower blade 7 is set at a position facing the drawing punch 4.

Therefore, the punching station 9 punches the plate material A, which is transferred forward one pitch at a time between the upper mold 1 and the lower mold 5, using the hole punches 2, 2, 2 and the die 6.
Subsequently, the upper blade 3 and the lower blade 7 cut the plate material A into a belt-shaped plate A. A cutting station 10 that cuts the strip-shaped plate A. A drawing punch 4 and a forming station 11 for drawing the material using a die 8 are sequentially arranged. In the punching station 9, the plate material A of the upper mold 1 has downwardly protruding parts at both sides along the feeding direction (in Figs. 1 and 2, both sides parallel to the plane of the paper, and in Fig. 4, both left and right sides). Drive cams 12, 12 are integrally attached, and each drive cam 12 has a cam surface 12a at its lower end that slopes upward from the front side toward the rear side.

On the other hand, the above punching process. The drive cam 12 of the upper mold 1 is attached to the plate material A of the lower mold 5 in the station 9, on both sides along the feeding direction (both sides parallel to the plane of the paper in FIGS. 1 and 2, left and right sides in FIG. 4). The driven cams 13, 13 having vertical guide holes 13a, 13a for inserting and guiding the driven cams 13, 12 are slidable in the front and rear directions on both sides of the lower mold 5, respectively, and The plate material A is biased in the feeding direction (forward) by springs 14, 14 compressed between the die 5 and the guide holes 13. of the respective driven cams 13. A cam surface 13b is formed at the rear upper part of a, and is inclined in the same direction as the cam surface 12a of the drive cam 12 and slides into sliding contact with the cam surface 12a. Drive cam 1 as upper mold 1 rises
When the cams 2 and 12 rise, the pressure of the drive cams 1 and 2 and 12 against the driven cams 13 and 13 is released and the springs 14 and
While the driven cams 13, 13 are moved forward by the urging force of the upper mold 1, the cams of the driven cams 13, 13 are moved forward by the cam surfaces 12a, 12a of the driving cams 12, 12 due to the lowering of the driving cams 12, 12 as the upper die 1 is lowered. The driven cams 13, 13 are configured to be moved backward against the urging force of the springs 14, 14 by pressing the surfaces 13b, 13b. moreover,
A pair of notch guide portions 15, 15 are formed on both outer surfaces of the lower mold 5 corresponding to the cutting station 10, that is, on both side surfaces of the plate material A of the lower blade 7 along the feeding direction.
In each of the driven cams 13, at the front end position of the surface facing the lower mold 5, that is, at the front of the plate material A in the feeding direction, a boosting member 16 that is guided and housed in the notch guide portion 15 is integrally protruded. As each driven cam 13 moves back and forth, the boosting member 16 is moved into the notch guide section 15 at a position (the position indicated by the solid line in the figure) and at the molding station where it protrudes from the notch guide section 15. By moving back and forth between the position where it reaches nearly 11 (the position indicated by the imaginary line in the figure),
A strip-shaped plate A is cut from the plate material A by the cutting station 10 during its forward movement.

The paper is transferred to the molding station 11 by pressing both rear corners of the paper. Therefore, the plate material A is cut at the cutting station 10 in the middle of a series of processing, and the separated strip-shaped plate A is obtained. The boosting member 16 accompanying the press operation
, 16 to the shaping station 11, where the three-dimensional article A is transferred. It is configured to process. In addition, 17
18 is a guide roller that guides the plate material A1, 18 is the plate material A,
19 is a belt-shaped plate A cut by the cutting station 10. 20 is a compressed air supply path for supplying compressed air for discharging the article A after the molding process; 21 is a belt-shaped plate A; It is a magnet that temporarily attracts and fixes. Next, to explain the operation of the above embodiment, the continuous plate material A, supplied from a hoop or the like, is punched by the punching station 9 while the upper mold 1 moves forward one pitch at a time by a press operation in which the upper die 1 repeatedly rises and falls. Holes are punched using the punches 2, 2, 2 and the die 6, and then at the cutting station 10, when the upper mold 1 is lowered, the double-edged blades 3 and 7 are used to form a band-shaped plate A.

is cut off. And the band-shaped plate A after the above-mentioned cutting.

The blade falls to a position below the upper blade 3 on the upper surface of the embossing die 8 and is attracted and fixed by the magnet 21, but at that time, the drive cams 12, 12 are lowered as the upper die 1 is lowered during cutting. , the driven cam 13 is lowered by the lowering of the driving cams 12, 12.
, 13 retreat due to the biasing force of the springs 14, ]4, the boosting member 16 integrally provided to each of the driven cams 13 retreats and retracts into the notch guide section ]5.
At the lower end position of the upper mold 1, the boosting members 16, 16 are located on the rear side with respect to the band-shaped plate A2 fixed to the upper surface of the drawing die 8. After that, when the upper die] rises, the drive cams 12, 12 rise accordingly, and as the drive cams 12, 12 rise, the pressure on the driven cams 13, 13 is released, and the driven cams 13, 13 spring. 1
The driven cam moves forward due to the urging force of 4,]4, and this driven cam moves forward due to the biasing force of 4,]
3 moves forward, the pushing members 16, ] 6 integral therewith protrude from the notch guide parts 15, 15 and push both rear corners of the band-shaped plate A2 located in front of the notch guide parts 15, 15, thereby pushing the rear corners of the band-shaped plate A2 in the forming station 11. The strip-shaped plate A2 is transferred to a position regulated by a stopper] 9 on the upper surface of the drawing die 8, and the strip-shaped plate A2 is attracted and fixed by magnets 21, 21 provided at that position.

Next, when the upper mold is lowered, the punching station 9 performs hole-drilling and the cutting station 10 performs cutting in the same manner as described above, and the driven cams 13 and 1
3 retreats and the backing members 16, 16 become the notch guide parts] 5
, ]5, and at the same time, the strip-shaped plate A2 fixed on the drawing die 8 in the forming station ]1 is drawn by the drawing punch 4 and the die 8 to form a three-dimensional shape. It is formed into article A3.

Note that this three-dimensional article A3 is discharged by the jet of compressed air from the compressed air supply path 20 when the upper die 1 is raised. Therefore, in this embodiment, the pressing operation of the upper die 1 performs the drilling and cutting of the plate material A1, as well as the cutting of the cut strip. Since the drawing process for the plate A2 can be performed continuously and automatically, there is no need to separately prepare a press die for forming as in the conventional case, and the number of steps in press process can be reduced.

In the above embodiment, the punches 2, 2, 2 and the die 6 are used to punch the plate material A1 in the punching station 9.
In addition, the forming station 11 performs a drawing process on the strip-shaped plate A2 using the drawing punch 4 and die 8, but the punch and die for punching the outside shape are set in the punching station 11. However, it is also possible to set a bending punch and a die in the forming station to punch out the outline of a plate material or to bend a strip-shaped plate material.

As explained above, according to the progressive repress die of the present invention, the punching station for punching a plate material is followed by the cutting station using a cutting blade and the forming station for drawing, bending, etc. The drive cam is attached to the upper die, while the driven cam, which retreats as the drive cam descends, is slidable on the side of the lower die along the plate feeding direction in the plate feeding direction. and is biased in the plate material feeding direction by a spring, and furthermore, a boosting member is provided in front of the driven cam in the plate material feeding direction to transfer the strip-shaped plate cut from the plate material to the forming station, and a series of The plate material is cut in the middle of processing, and the separated strip-shaped plate is transferred by a press operation to be processed into a three-dimensional article.
Cutting and forming can be performed automatically in series, thereby simplifying the press mold and reducing the number of processing steps.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal side view at a processing position of a plate material, FIG. 2 is a longitudinal side view at a position where a driving cam and a driven cam on the near side in FIG. 1 are arranged. 3 is a sectional view taken along the line 111111 in FIG. 1, FIG. 4 is a plan view of the lower mold, and FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. 4. 1...Top mold, 5...Bottom mold, 9...
...Blanking station, 10... Cutting station, 11... Forming station, 12... Drive cam, ]6... Pushing Member, A1...Plate material, A2...Plate, A
3... Goods.

Claims (1)

[Claims] 1. Following the punching station for punching plate materials, a cutting station using a cutting blade and a forming station for drawing, bending, etc. are arranged in sequence, and a drive cam is attached to the upper mold, while a drive cam is attached to the upper die along the direction in which the lower mold feeds the plate material. A driven cam is provided on the side so as to be retracted by the descent of the drive cam so as to be able to slide against the side of the lower die in the sheet material feeding direction, and is biased in the sheet material feeding direction by a spring; A booster member is installed at the front of the cam in the sheet material feeding direction to transport the strip-shaped plate cut from the sheet material to the forming processing station.The plate material is cut in the middle of a series of processing, and the cut-off strip-shaped plate is transferred by a press operation. A progressive press mold is characterized in that it can be processed into three-dimensional articles.