JP2903492B2 - Document binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document binding device for integrally binding the ends of a paper bundle formed by laminating a plurality of sheets of paper, and more particularly to a so-called stapleless stapler which does not use a metal staple. It relates to a so-called document binding device.

[0002]

2. Description of the Related Art In the past, it was common to bind documents with a stapler using metal staples. Recently, however, a stapleless stapler capable of binding documents without using metal staples has been developed. Has appeared. this is,
A method is employed in which a substantially U-shaped cut is formed in the paper, and the tongue pieces inside the cut are simply bent and locked in the punched holes, thereby securing the papers to each other. However, the documents stapled with such a conventional stapleless stapler have a complaint that the tongue-like pieces are easily detached, the binding state is unstable, and the documents tend to be separated.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, it is possible to bind documents without using a metal needle, and furthermore, it is possible to stabilize a binding state by securely connecting papers. Another object of the present invention is to provide a novel document binding device that does not have to worry about dispersing documents.

[0004]

In order to achieve the above-mentioned object, a document binding device according to the present invention comprises a tongue-shaped piece 2 which is lowered by operating a lever 6 and has three sides cut at the end of a bundle of paper 1. And a second punch 8 in the vicinity of the first punch 7 which forms a tongue 3 which is wider than the tongue 2 and is opposite to the tongue 2 by similarly encircling three sides with cuts. First
Claws 29 and spring receiving pieces 30 at both ends of the punch
The rotating claw 9 is attached to the rotation automatically, and the first punch 7 and the second
On the die 13 having a through hole 12 through which the punch 8 is penetrated
The support plate 16 is disposed with a suitable gap 32 therebetween.
When the first punch 7 is lowered onto the holding plate 16, the spring catch of the rotating claw 9 is received.
When the piece 30 hits, the rotating claw 9 is rotated to
A receiving portion 19 for bending the downward tongue-shaped piece 2 formed by the first punch 7 to the side by the claw portion 29 at the end ;
The tongue 2 is lifted by supporting the tip of the tongue 2 bent from the side downward from below, and the tongue 2 is lifted to bring the tongue 3 formed by the second punch 8 together. A hook 15 is provided on the second punch 8 to insert the tongue 2 into the hole 4 formed by pushing up and to completely penetrate the tip of the tongue 2 and lock it . Penetrating through hole 4
The tongue-shaped piece 2 is pressed down by the tongue-shaped piece 3 from above.
This is a configuration characterized by the following.

[0005]

The operation of the lever lowers the first punch 7 and the second punch 8 to form tongue-shaped pieces 2 and 3 for the sheet bundle 1 respectively. Next, the rotating claw 9 rotates in conjunction with the lowering of the first punch 7, and the rotating claw 9 pushes the downward tongue-shaped piece 2 formed by the first punch 7 to the side to bend. The tongue-shaped piece 2 bent to the side is provided with a hook 1 provided on the second
5 can support under the tip. When the second punch 8 is lifted, the tongue-shaped piece 2 is lifted by the hook portion 15 to push up the tongue-shaped piece 3 formed by the second punch 8 from the lower side to form a punched hole 4. The tongue 2 is inserted into the hole 4 and locked. Therefore, the fastening by the tongue piece 2 is ensured, and the binding state is stabilized.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. First, the structure will be described with reference to FIGS. In FIG. 1, reference numeral 10 denotes a base, and a base 11 is provided at a substantially central portion of the upper surface so as to protrude from the base, and a first punch 7 and a second punch 8, which will be described later, penetrate the front upper surface. The die 13 having the through hole 12 is attached, and the die 1
Under the third through hole 12, a larger relief hole 14 is provided.

A support plate 16 is horizontally disposed above the guise 13 with an appropriate gap 32 therebetween, and the rear end of the support plate 16 is fixed on the mount 11 of the base 10. The support plate 16 is provided with two guide holes 17 and 18 for penetrating the first punch 7 and the second punch 8, respectively, separately above the through holes 12 provided in the die 13, and provided between the two. A receiving portion 19 for the rotating claw 9 described later is provided.

A box 20 is placed on the support plate 16, and a punch holder 21 is arranged inside the box 20 so as to be able to move up and down. As shown in FIG. 2, the punch holder 21 is provided with a punch fixing portion 22 having a lower end opened at the center and spring storage chambers 23 and 24 having the same lower end opened on both sides thereof. As shown in FIG. 3, a first punch 7 having an inverted U-shape whose cross section is long in the front-rear direction is provided at a front end (the left side is a front side in the drawing) of the punch fixing portion 22, and a cross section is provided at the rear end. The U-shaped second punches 8 having a wide width in the direction are fixed respectively. The lower edge of the first punch 7 is inclined forward and downward, and the lower edge of the second punch 8 is inclined backward and downward. Further, coil springs 25 and 26 are stored in the spring storage chambers 23 and 24, respectively, and the lower ends thereof are received by the support plate 16. The punch holder 21 is repelled by the coil springs 25 and 26 and automatically rises upward. A bump 27 is provided on the upper surface of the punch holder 21.

The lever 6 is located at the upper end and the front end of the box 20.
The lever 6 is rotatably mounted at the front end and the lower end thereof, and the lever 6 is in contact with the head of the bump 27 of the punch holder 21 in a posture inclined forward and downward. Further, a stopper 28 attached to the box 20 is disposed above a substantially central position of the lever 6 to limit the rising of the lever 6.

A rotary claw 9 is rotatably mounted inside the first punch 7 fixed to the punch holder 21. The rotating claw 9 has a claw portion 29 hanging downward at one end, and a spring receiving piece 30 inclined backward and downward at the other end, and a lower end portion of a leaf spring 31 attached to the punch fixing portion 22. Is in contact with the rear surface of the spring receiving piece 30.

On the side wall near the lower end of the second punch 8, a window hole is opened in the front-rear direction, and the window hole is used as a hook 15.

Next, a process of binding the sheet bundle 1 will be described with reference to FIGS. First, as shown in FIG. 6, the paper bundle 1 in which a plurality of papers are stacked is inserted and set in the gap 32 between the die 13 and the support plate 16, and the rear end of the lever 6 is pushed down.

Then, the punch holder 21 in which the head of the bump 27 provided on the upper surface is pressed by the lever 6 is lowered with respect to the box body 20, and the first punch 7 and the second punch 8 are lowered integrally. The first punch 7 forms a tongue-shaped piece 2 surrounded by an inverted U-shaped notch which is long in the front-rear direction at the end of the paper bundle 1, and the second punch 8 has a U-shaped notch having a wide width in the lateral direction. To form a tongue 3 surrounded by. These tongues 2, 3 face downward during cutting. When the first punch 7 descends to a certain position, as shown in FIG. 7, the lower surface of the spring receiving piece 30 of the rotating claw 9 hits the receiving portion 19 of the support plate 16, and when the first punch 7 is further lowered, the rotating claw is rotated. 9 rotates in conjunction with it. As shown in FIG. 8, the claw portion 29 of the rotating claw 9 pushes the tongue-shaped piece 2 backward to bend.

The tip of the tongue-shaped piece 2 bent rearward by the claw portion 29 of the rotary claw 9 is inserted into a window hole provided in the second punch 8, that is, the hook portion 15.

In this state, when the lever 6 is pressed down and released, the rotary claw 9 is rotated in the reverse direction by the force of the leaf spring 31 as shown in FIG. 9, and the first punch 7 and the second punch 7 are rotated. 8 is the coil spring 2 together with the punch holder 21
It rises with a force of 5,26. At this time, since the tip of the tongue-shaped piece 2 is inserted into the window hole provided in the second punch 8, that is, the tongue-shaped piece 2 is supported by the hook 15,
It is lifted together by the punch 8.

The tongue 2 lifted by the second punch 8 pushes up the tongue 3 formed by the second punch 8 from below, as shown in FIG. It is inserted into the hole 4 and locked,
It is held down by the tongue 3 from above. This allows
As shown in FIGS. 11 and 12, the binding of the ends of the sheet bundle 1 is completed. Reference numeral 5 denotes a hole formed by bending the tongue 2.

[0017]

As described above, the present invention has an effect that documents can be bound without using a metal needle. Also, the downward tongue-shaped piece 2 formed by the first punch 7
Is rotated laterally by the rotating claw 9, the tip of the tongue 2 is supported by a hook 15 provided on the second punch 8, and the tongue 2 is further lifted by raising the second punch 8. As a result, the tongue-shaped piece 3 formed by the second punch 8 is inserted and locked in the punched hole 4 formed in the trace of pushing up, so that the papers can be securely fixed and the binding state of the documents can be stabilized. It is possible to eliminate the drawback that the conventional paper is easily dispersed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view in which a substantially central portion is cut in a front-rear direction.

FIG. 2 is a vertical cross-sectional view taken along a line AA of FIG. 1 and orthogonal to a cut surface of FIG. 1;

FIG. 3 is a transverse sectional view taken along line BB of FIG. 1;

FIG. 4 is a transverse sectional view taken along line CC of FIG. 1;

FIG. 5 is a bottom view.

FIG. 6 is a vertical sectional view of a substantially central portion in a state where a sheet bundle is set.

FIG. 7 is a longitudinal sectional view showing a state in which a tongue-shaped piece formed by a first punch in a paper bundle is bent downward.

FIG. 8 is a longitudinal sectional view showing a state in which a tongue-shaped piece formed by a first punch on a paper bundle is bent laterally by a rotating claw;

FIG. 9 is a longitudinal sectional view showing a state where the second punch is raised.

FIG. 10 is a longitudinal sectional view showing a state where a tongue-shaped piece is inserted into a hole.

FIG. 11 is a perspective view illustrating a state in which the ends of the sheet bundle are stapled.

FIG. 12 is a sectional view taken along line DD in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper bundle 2, 3 Tongue piece 4, 5 Pull-out hole 6 Lever 7 1st punch 8 2nd punch 9 Rotating claw 10 Base 11 Mounting stand 12 Through hole 13 Die 14 Escape hole 15 Hook 16 Support plate 17, 18 Guide Hole 19 Rotating claw receiving part 20 Box 21 Punch holder 22 Punch fixing part 23, 24 Spring storage chamber 25, 26 Coil spring 27 Cob 28 Stopper 29 Claw part 30 Spring receiving piece 31 Leaf spring 32 Gap

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B42B 5/00

Claims (1)

(57) [Claims] 1. A first member, which is lowered by operating a lever to form a tongue-shaped piece having a notch on three sides at an end of the sheet bundle.
A punch 7, also surrounded by cuts on three sides in the vicinity
A second punch 8 that forms a tongue 3 that is wider and opposite to the tongue 2 and has a claw portion on the first punch.
Rotating claw 9 having both ends 29 and spring receiving pieces 30
Is attached to the rotation automatic and penetrates the first punch 7 and the second punch 8
A suitable gap above the die 13 having the through hole 12
The support plate 16 is arranged via the space 32, and the support plate 16
The spring receiving piece 30 of the rotary claw 9 hits when the punch 7 is lowered.
By rotating the rotary claw 9, the claw portion 29 at the other end is rotated.
And a receiving portion 19 for pressing and bending the downwardly directed tongue-shaped piece 2 formed by the first punch 7 to the side is provided.
Rises while supporting the tip of the tongue-shaped piece 2 bent laterally from below, and lifts the tongue-shaped piece 2 to form the second
As so inserted a punched hole 4 navel tongues 2 caused by pushing up the tongue 3 which punch 8 is formed together
Hook 1 for completely penetrating the tip of tongue 2 and locking
5 is provided on the second punch 8, and the tongue 2
A document binding device wherein the tongue-shaped piece 3 is pressed down from above .