JPH06102502B2 - Punching method for band-shaped sheet and punching device therefor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method and an apparatus for punching a long strip-shaped sheet such as thin paper, film, sheet and tube.

[Prior Art] In the conventional method and device for punching a long strip-shaped sheet of this type, the parts are cut in advance, stacked on a magazine chute by a feeding device such as a part feeder, and a scooping mechanism is rotated from below. A device that is provided outside the punching device and moves the parts when the pocket of the punching device having a rotary type rotary table is sent, or a device that moves the magazine and has a head for several minutes and moves the scooping parts from below. Or, there is a device that stacks parts on a magazine chute from a parts feeder and scoops out parts using a sub dial.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, the higher the speed of the rotary type rotary table for storing thin and light parts, the higher the speed of the rotary table and the design of the pocket shape. Will be difficult. Also, when picking up parts, the magazine must be replaced every time the magazine chute becomes empty, so the device must be stopped, and the type that drops parts into the magazine becomes less reliable as the speed increases. .

Furthermore, in a device that stretches a strip-shaped sheet between an upper die and a lower die on a rotary table for punching, there is no delivery of parts, so there is certainty in high-speed punching. Since the pitch is the same as the pitch between the heads of the rotary table and the yield of the material is determined, there is a problem that there is a limit to improving the yield.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus which can solve the above-mentioned problems of the prior art, reliably punch out a sheet, and improve the yield.

[Means for Solving Problems] The present invention has been made to achieve the above object,
The means will be described corresponding to the embodiment.

By moving the rotary shaft, the plunger cam groove and the insert plunger cam groove provided on the peripheral wall of the upper drum supported in the center of the rotary shaft accommodated in the punching plunger, the punching plunger and the upper die. While moving the insertion plunger up and down, while stretching the strip-shaped sheet by the index unit having a pair of roller feeds on the upper surface of the rotary table where the lower mold of the rotary table and the upper mold are close to each other, While the punching operation of the strip-shaped sheet by the upper die and the lower die, while feeding the strip-shaped sheet at a speed that is synchronized with the moving pitch circumferential velocity of the rotary table, the feeding speed of the strip-shaped sheet other than the punching operation is stopped, or It is a punching method that moves at a slow speed near the stop, and it is the upper center of the rotary table. For a punching plunger that has a rotating shaft located and an upper drum that rotatably supports the upper portion of the rotating shaft, and transfers a plurality of punching plungers having a punching die attached to the peripheral wall of the upper drum. A cam groove and an insertion plunger cam groove for slidingly moving the punching plunger and the inner wall surface of the upper die are provided, and the periphery of the rotary table corresponds to the upper die of the plurality of punching plungers. The plate dies are arranged at equal intervals at the above positions, and the upper die of the punching plunger that descends by the cam groove for the punching plunger comes close to the lower die. It is stretched by a feed, and the roller feed is rotated around the rotation pitch of the rotary table during the punching operation of the belt-shaped sheet by the upper die and the lower die. A punching apparatus of the belt-like sheet that is linked to a pair of index unit to send the feed rate of the belt-like sheet of non-punching operation and sends the belt-like sheet at a speed synchronized with degrees at the stop or close the stop trenchless speed.

[Operation] By the above means of the present invention, the strip-shaped sheet is put between the upper die and the lower die of the rotary table by the intermittent feed having the constant velocity portion equal to the pitch circumferential velocity of the rotary table, and other than the punching operation. Since the supply of strip-shaped sheets of
The yield during punching operation is improved, and punching and insertion can be performed reliably. Further, since the belt-shaped sheet is supplied from the outside of the rotary table, roll replacement of the belt-shaped sheet is short, and during the punching operation, the punching position is displaced by the roller feed driven by the index unit at the pitch and circumferential speed of the rotary table. As a result, the center positioning at the time of punching the sheet, that is, centering can be accurately performed.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of an essential part of an apparatus according to an embodiment of the present invention, in which reference numeral 1 is a rotary shaft, which is rotationally driven by a drive source. An upper drum 2 fixed by a frame is provided above the rotary shaft 1, and the upper drum 2 rotatably supports the rotary shaft 1. The peripheral wall portion 3 of the upper drum 2 has a plurality of cylindrical punching plungers 5 each having a hollow cylindrical punching upper die 4 attached to the lower end thereof.
A punching plunger cam groove 6 for parallel movement or vertical movement is provided, and the punching plunger 5 is provided in the cam groove 6.
Are arranged via pins and rollers. Upper mold 4
Also, an insertion plunger 7 which slides along the inner wall surface of the upper die and the plunger 5 and moves vertically is inserted in the punching plunger 5. The insertion plunger 7 is arranged via a roller and a pin in the insertion plunger cam groove 8 provided in the peripheral wall portion 3 below the punching plunger cam groove 6 provided in the upper portion of the peripheral wall portion 3 of the rotary drum 2. Has been done. Reference numeral 9 denotes a rotary wheel attached to an intermediate portion of the rotary shaft 1. The rotary wheel inserts the punching plungers 5 at equal intervals and moves the punching plungers in conjunction with the rotary shaft 1 in the same direction.
Similarly, 10 is a rotary base mounted on the rotary shaft 1, and a rotary table 11 is provided on the rotary base 10. On the rotary table 11, lower dies 12 are arranged at equal intervals at positions corresponding to the upper dies attached to the punching plunger 5. 13 is a stripper for punching. 14 is a rotating base
It is a lower rotating wheel attached to the lower surface of 10. The lower rotating foil has container pockets 15 at equal intervals. The lower end of the insertion plunger 7 is passed through a stripper, a lower mold and a rotary table 11, and is punched into a container 16 in a container pocket 15 by an upper mold and a lower mold.
Insert. Reference numeral 18 denotes a push-up plunger which is inserted through the lower rotary foil, and vertically moves the cylindrical zinc can or aluminum can container 16 in the container pocket 15. The push-up plunger 18 is attached by a roller and a pin to a push-up plunger cam groove 21 provided in the peripheral wall portion 20 of the fixed lower drum 19. In FIG. 2, the belt-shaped sheet 22 which is long with respect to the rotary table 11 is a pair of roller feeds 25, which are driven by a pair of index units 23, 24.
Suspended between 26. In FIG. 2, the belt-shaped sheet moves in the direction of arrow I by roller feeds 25 and 26. The belt-shaped sheet 22 is stretched at the position where the upper die 4 and the lower die 12 are closest to each other, that is, at the point C in FIG. In addition, the pair of index units 23 and 24 stop the belt or drive the roller feeds 25 and 26 at a slow speed close to the stop, except for the punching operation of the strip-shaped sheet by the punch 5 and the lower die, in the direction of arrow I of the strip-shaped sheet 22. The transition speed of is adjusted. Further, the roller feed is a belt-like sheet which is synchronized with the moving pitch circumferential speed of the rotary table 11 during the punching operation.
Move 22.

Next, the operation of the device of the present invention will be described with reference to FIGS. Point A in FIG. 2 corresponds to FIG. 3 (A), and similarly, FIG. 3 shows a sectional view at positions corresponding to points A to H in FIG. That is, the container 16 is positioned on the lower surface of the rotary table by the sub dial 27 at the point A, and the lower end of the insertion plunger 7 is in the upper mold A, and is moved to the point B as it is. Third at point B
As shown in the figure (b), only the upper die 4 of the insertion plunger enters the stripper 13. At this point, the belt-shaped sheet 22 is located between the upper die and the lower die. At point C, which corresponds to FIG. 3C, the upper die 4 and the lower die 12 are closest to each other, and the strip-shaped sheet
22 is a punched part part 17 having a predetermined shape. At point D, the punched strip-shaped sheet is separated from the upper mold 4 by the stripper 13 as shown in FIG. 3 (D), and the upper mold rises above the stripper 13 to cover up to the height of point A. . At the time when the point further moves to point E, Fig. 3 (e)
The parts 17 are held by the lower mold 12, as shown in FIG.

Next, at point F, only the insert plunger 7 is inserted into the lower die 12 due to the inclination of the cam groove for the insert plunger.
Press down 17 and push up plunger cam groove 21
As a result, the container 16 contacts the lower surface of the rotary table 11 and is pushed up. At point G, the movement of the insertion plunger 7 reaches the maximum value, and the insertion of the parts part 17 into the container is completed. At point H after point G, the insertion plunger 7 returns to the punching plunger, and the container pushing-up plunger also descends due to the cam groove of the lower drum. As a result, the container 16 accommodating the parts is transferred to the next step by another sub dial 28.

In the present invention, during the punching operation at the time of FIG. 3 (c), the belt-shaped sheet is fed by the roller feeder at a speed that is synchronized with the moving pitch circular circumferential speed of the rotary table, so that a circular motion is performed during the punching operation. The upper and lower molds are punched by pinching a strip-shaped sheet that is moving in the straight direction (arrow I).
When the synchronized distance becomes long, an error occurs between the circular movement and the rectilinear movement. Therefore, it is preferable to eliminate the error by performing the punching operation at a short distance.

[Advantages of the Invention] As described above, the present invention can provide an apparatus capable of reliably performing punching operation rate and yield of a material by a continuously rotating punching method and apparatus.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of the device of the present invention. Figure 2 shows
It is a top view which shows the relationship between the rotary table and the index unit in the apparatus of this invention. Figure 3 (a) (b)
(C) (D) (E) (F) (F) (G) (H) are explanatory views showing the operation of the device of the present invention. 1 ... Rotary shaft, 2 ... Upper rotating drum 5 ... Punching plunger 7 ... Inserting plunger 11 ... Rotating table, 15 ... Container pocket 16 ... Container 18 ... Pushing plunger 23,24 ... … Index unit 25, 26 …… Roller feed

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Kitazawa 3-4-10 Minami-Shinagawa, Shinagawa-ku, Tokyo Takabumi Kanzaki, Examiner, Toshiba Battery Corporation (56) References JP-A-55-151456 (JP, A) )

Claims (2)

[Claims] 1. A punching plunger, a punching plunger, and an upper die by a plunger cam groove and an insertion plunger cam groove provided in a peripheral wall of an upper drum supported in the center of the rotating shaft by the movement of the rotating shaft. While vertically moving the insertion plunger housed in the upper part of the rotary table, the belt-shaped sheet is stretched by an index unit having a pair of roller feeds on the upper surface of the rotary table where the lower mold and the upper mold of the rotary table are close to each other. ,
During the punching operation of the belt-shaped sheet by the roller feed or the upper die and the lower die, the belt-shaped sheet is fed at a speed synchronized with the moving pitch circumferential velocity of the rotary table and the feeding speed of the belt-shaped sheet other than the punching operation is stopped. Or
Alternatively, a method for punching a strip-shaped sheet is characterized by moving at a slow speed close to a stop. 2. A plurality of rotary shafts, each of which has a rotary shaft located in the upper center of the rotary table and an upper drum which rotatably supports the upper portion of the rotary shaft, and a punching die attached to a peripheral wall portion of the upper drum. The punching plunger cam groove for shifting the punching plunger of (1), and the insertion plunger cam groove for slidingly shifting the punching plunger and the inner wall surface of the upper die. The lower die is arranged at equal intervals at positions corresponding to the upper die of the punching plungers, and the lower surface of the rotary table is close to the upper die of the punching plunger descending by the cam groove for the punching plunger. The belt-shaped sheet is stretched by a pair of roller feeds, and the roller feed is rotated during the punching operation of the belt-shaped sheet by the upper die and the lower die. It is connected to a pair of index units that feed the belt-shaped sheet at a speed that is in synchronism with the circular movement speed of the table and feed the belt-shaped sheet at a speed other than the punching operation at a stop or slow slow speed close to the stop. Characteristic stripping device.