JP3218978B2 - Rotary drilling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary punching apparatus for punching punched holes in paper, and more particularly to a rotary punching apparatus provided with a punch hole position correcting function.

[0002]

2. Description of the Related Art
2. Description of the Related Art There is known a rotary punching device which is built in a copying machine or the like and punches a circular hole in an edge of a copy sheet. In this type of rotary punch, a punch is attached to one of two rotating shafts provided in parallel, and a die is attached to the other rotating shaft. Gears are fitted to each other on the two rotating shafts and mesh with each other. When one of the rotating shafts is driven by a motor, the punch and the die rotate synchronously in opposite directions to each other. Are fitted within a certain rotation angle range.

[0003] The control unit of the rotary punching device drives the paper feed mechanism to convey the paper between the punch and the die, detects the feed amount by the feed amount detecting means, and sets the rear end of the paper to the punch position. The punch and the die are activated just before passing between the die and the die, and a punch hole is punched at a predetermined position near the rear end.

[0006] Since the position of the punch hole in the feeding direction is constant in the document punched out in this manner, as shown in FIG. 6, when the document D is bound to a ring-shaped binder, the document D is formed by the ring of the binder. The position of each page is shifted according to the shape of the RB, and the end of the document becomes convex.
In the case where the curvature is small or the number of pages of the document D to be bound is large, there is a problem that the convex surface becomes noticeable and the appearance is poor. When a large-diameter ring is used, the displacement of the page is reduced. However, the thickness of the entire binder is increased, the space occupied by the storage space is increased, and the space efficiency is reduced.

[0005] Therefore, regardless of the curvature of the ring of the binder, there is a technical problem to be solved in order to improve the aesthetic appearance by aligning the edges of the document and to improve the space efficiency by enabling the use of a small diameter ring. Therefore, an object of the present invention is to solve the above problems.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above object, and has two parallel arrangements.
A punch holder is mounted on one of the rotary shafts, a punch is inserted into a punch mounting hole on the outer peripheral surface of the punch holder, and a die holder is mounted on the other rotary shaft, and a die is mounted on a die mounting hole on the outer peripheral surface of the die holder. A paper feed mechanism that inserts and attaches a synchronous rotation mechanism that fits the punch and the die within a certain rotation range, and conveys the paper between the punch holder and the die holder; A rotary punching device for activating a punch and a die to punch a punched hole in a sheet of paper when a target feed amount and a feed amount detection result of the paper feed amount detecting unit match each other. Means for inputting the total number of pages of the document to be bound to the ring-shaped binder, the paper thickness data and the ring curvature data of the ring-shaped binder, and writing the document in a state where the document is bound to the ring-shaped binder. Means for correcting the target feed amount data for each page based on the input data so as to match the end positions of the punched holes and controlling the punched hole punching position. is there.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a rotary punching device 11 built in a copying machine, in which a pair of side plates 12, 13 are connected by a horizontal member 14 to form a frame, and a paper feed unit 15 is provided between the side plates 12, 13. And a rotary perforated portion 16 (hereinafter simply referred to as a perforated portion) are arranged in parallel.

As shown in FIG. 2, the punching portion 16 has an upper punch rotating shaft 17 and a lower die rotating shaft 18 arranged in parallel, and two punch holders 19 at the center of the punch rotating shaft 17 and at the left and right thereof. A die holder 20 is mounted on the die rotation shaft 18 at a position corresponding to the upper punch holder 19. Punch holder 19 and die holder 20
A punch 21 and a die 22 are respectively inserted into a punch mounting hole and a die mounting hole provided on the outer peripheral surface of the motor, and are fixed to the rotating shafts 17 and 18 by set screws (not shown).

A spur gear G shown in FIG. 1 is fitted to one end of the punch rotary shaft 17 and one end of the die rotary shaft 18 so as to mesh with each other.
A punch drive motor 23, which is a servo motor or a stepping motor, and one of the rotating shafts are connected by a timing belt, and the punch rotating shaft 17 and the die rotating shaft 18 are synchronously driven.

In the paper feed unit 15, paper feed rollers 26 are fitted at regular intervals on a rotating shaft 25 provided on a unit frame 24, and a pinch roller 27 is provided above the rotating shaft 25 as shown in FIG. It is arranged and pressed against the paper feed roller 26. The rotating shaft 25 is driven by a paper feed motor 28, and presses the paper P between the paper feed roller 26 and the pinch roller 27 to convey the paper P from right to left in the drawing.

A paper discharge roller 2 of a copying machine indicated by a chain line in FIG.
The paper introduced into the paper guide 30 of the rotary punching device 11 through 9 passes between the punch holder 19 and the die holder 20, is drawn between the rollers 26 and 27 of the paper feed unit 15, and is sent forward.

[0012] Then, the control unit controls the paper feeding unit 1
When a paper detection signal is input from the photo-interrupter 31 after reaching the position of the photo-interrupter 31 arranged in front of 5, the measurement of the paper feed amount is started by the feedback signal of the servo motor or the driving pulse count of the stepping motor, and When the feed amount reaches the target value, the punching unit 16 is activated to punch a punch hole near the trailing edge of the paper.
Therefore, the front and rear positions of the punch holes in the feed direction can be adjusted by setting the target paper feed amount.

FIG. 3 shows a configuration of a control circuit of the rotary punching apparatus 11. A control unit 32 is provided with a main controller of a copying machine incorporating the rotary punching apparatus or a data input means 33 such as a keyboard device. Data and a signal from the photo interrupter 31 are input. The control unit 32 includes an input / output control device 34, a CPU 35, a ROM 36, a RAM
37 controls the paper feed motor drive circuit 38 of the paper feed unit 15 and the punch motor drive circuit 39 of the punching unit 16 to drive the paper feed motor 28 and the punch drive motor 23.

The ROM 36 stores reference drilling position data,
A correction calculation program for performing differential analysis processing of the correction amount of the reference drilling position based on the input data is stored. The reference punching position data is target feed amount data from the position of the photo interrupter 31, and has a value such that the punching position is, for example, tens of mm from the trailing edge of the paper. When the straight pipe type binder is designated via the data input means 33, the reference drilling position data is read out and the RAM is read out.
37 are written in the perforation position data area, and punch holes are punched at fixed positions for all pages.

When a ring-shaped binder is designated, the CPU 35 determines the size of the ring (by manual input), the unit thickness data of the paper and the total page number data (by manual input or (Transferred from the main controller of the copying machine), and corrects the target feed amount data for each page.

The CPU 35 calculates the thickness of the document from the unit thickness data of the paper and the data of the total number of pages, and calculates the first page P1.
And the punching position of the last page Pn as the reference punching position.
Then, based on the curvature of the ring and the thickness of the paper, the feed amount correction value for each page is differentiated so that the perforated position of each intermediate page sequentially moves to the front in an arc shape equal to the curvature of the ring. Then, the target feed amount data corrected for all pages is written in the data table of the RAM 37 in the order of pages.

At the start of punching, the target feed amount data in the data table is read in page order for each cycle of the punching operation, and when the feed amounts based on the individual feed amount data for all pages P1 to Pn are detected, the punching is performed. The part 16 is activated to punch a punch hole. Therefore, as shown in FIG. 4, when the documents stacked in the page order after the perforation is completed and bound to the ring-shaped binder, the perforated positions of the intermediate pages with respect to the perforated positions of the first page P1 and the last page Pn are changed. Since the document RD is sequentially displaced toward the front edge in accordance with the curvature of the ring RB, the edges of the document D are aligned and bound in a plane.

The drilling position correction calculation mode is not limited to the ring-corresponding correction formula processing, but by setting various correction modes and calculation programs, for example, as shown in FIG.
As shown in FIG. 5, various binding forms can be used, such as inclining the edge of the document D with respect to the pipe-shaped binder PB. Further, the present invention can be further variously modified within the technical scope of the present invention, and it is natural that the present invention extends to those modified ones.

[0019]

As described above, the rotary punching device of the present invention corrects the punching position of each page of the document in accordance with the curvature of the ring of the ring-shaped binder and binds the end of the document bound to the ring-shaped binder. Since the positions of the parts are matched, the end of the document does not protrude into a convex shape, and the appearance is improved. Also,
Since the end positions of the document can be matched regardless of the curvature of the ring, various effects such as a reduction in the diameter of the binder ring and a reduction in the thickness of the binder can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view of a rotary punch.

FIG. 2 is a side view of a rotary punch.

FIG. 3 is a circuit block diagram of a rotary punch.

FIG. 4 is an explanatory diagram showing a perforation position correction result corresponding to a ring-shaped binder.

FIG. 5 is an explanatory view showing a hole position correction result of another embodiment.

FIG. 6 is an explanatory diagram showing a state in which documents perforated by a conventional rotary perforation device are bound to a ring-shaped binder.

[Explanation of symbols]

 Reference Signs List 11 rotary punching device 15 paper feed unit 16 rotary punching unit 17 punch rotation shaft 18 die rotation shaft 19 punch holder 20 die holder 21 punch 22 die 23 punch drive motor 28 paper feed motor 31 photo interrupter 32 control unit 33 data input means 38 Paper feed motor drive circuit 39 Punch motor drive circuit RB ring D Document

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuyo Shuto 6-6, Hakozakicho, Nihonbashi, Chuo-ku, Tokyo Inside Max Corporation (56) References JP-A-4-354699 (JP, A) JP-A-5 -212696 (JP, A) Fully open 1987-88599 (JP, U) Fully open 1987-88598 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B26F 1/00- 1/46

Claims (1)

(57) [Claims] 1. A punch holder is mounted on one of two rotating shafts arranged in parallel, a punch is inserted into a punch mounting hole on an outer peripheral surface of the punch holder, and a die holder is mounted on the other rotating shaft. A die is inserted into a die mounting hole on the outer peripheral surface of the die holder, and a synchronous rotation mechanism for fitting the punch and the die within a certain rotation range is interposed, and paper is conveyed between the punch holder and the die holder. Paper feed mechanism,
A means for detecting the paper feed amount is provided, and when the target feed amount and the feed amount detection result of the paper feed amount detecting means match, the punch and the die are started to rotate to punch a punch hole at a predetermined position on the paper. Means for inputting the total number of pages of a document to be bound to a ring-shaped binder, paper thickness data, and ring curvature data of a ring-shaped binder, and a document in a state where the document is bound to the ring-shaped binder. And a means for correcting the target feed amount data for each page on the basis of the input data so as to make the end positions coincide with each other, thereby controlling a punch hole punching position.