JPH0459118B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a tape cassette for supplying reinforcing pieces for document punching, in which a reinforcing piece is pasted at the hole punching position immediately before punching a hole in a document. It is related to.

[Prior art] In order to reinforce the periphery of the binding hole punched in the document,
Document punches are already known in which a reinforcing piece, such as a thin piece of plastic, is applied in advance to the punching location of the document, and then the hole is punched together with this reinforcing piece.

In such a document punch, it is desirable to detachably attach a tape cassette containing a reinforcing piece tape to which a reinforcing piece is attached, and to send out the reinforcing piece from this tape cassette in conjunction with the punching operation. When attaching the tape cassette to the punch, if the small hole for feeding the tape in the reinforcement strip tape is not in a position that accurately matches the reinforcement strip delivery mechanism of the document punch, it may be difficult to accurately deliver the reinforcement strip. can't do it.

In particular, if the tape cassette is not attached to the document punch, or if it is attached but the reinforcing piece tape can freely move in and out of the tape cassette when the handle is returned, etc., the reinforcing piece feed-out linked to the handle should be avoided. Accurate delivery of the reinforcing piece cannot be expected due to the operation of the mechanism.

Such problems can be avoided in document punches that have a reinforcing piece delivery mechanism built into the tape cassette.
Since the reinforcing piece delivery mechanism can hold the tape, this can be avoided relatively easily. However, in this case, each time the cassette is replaced with a new one, the reinforcing piece delivery mechanism must be discarded together with the cassette, resulting in an increased cost.

[Problems to be Solved by the Invention] The present invention provides for the reinforcing piece tape to freely move in and out of the tape cassette when the tape cassette is not attached to the document punch, or when the tape cassette is attached but the handle is returned to its original position. In addition, when attaching the tape cassette to a document punch, make sure that the reinforcing strip tape is attached so that the small hole for tape feeding provided in the reinforcing strip tape always fits correctly with the reinforcing strip feeding mechanism of the document punch. To provide a document punch in which the position of a small hole for feeding a tape is restricted, and the restriction is released when a reinforcing piece is sent out to a punching position by a reinforcing piece sending mechanism linked to a handle. This is the problem we are trying to solve.

[Means for Solving the Problems] In the present invention, in the document punch in which the reinforcing piece is sent out from the tape cassette described above, the tape cassette is divided into a accommodating part for accommodating the reinforcing piece tape, and the accommodating part. and a beak part for leading out the reinforcing piece tape from the inside, and the beak part has a lead-out passage for leading out the tape along the inner wall, and a lead-out passage for leading out the tape along the inner wall, and a lead-out passage for leading out the tape at the tip of the inner wall, and A guide path for guiding along the side surface and a reinforcing piece outlet opened at the folded part of the tape are provided,
The guide passage is provided with a bullet piece that protrudes into the guide passage from the inner wall side, and the free end of the bullet piece is engaged with a small tape feeding hole provided in the reinforcing piece tape, so that when it is assembled into a document punch, A locking protrusion is provided to project from the small hole when the reinforcing piece delivery mechanism is engaged with the small hole.

[Function] When the tape cassette is not attached to the document punch, the locking protrusion provided on the bullet piece protruding into the tape guide path locks into the feeding hole of the reinforcing piece tape, and the reinforcing piece tape Since the position of the feeding small hole is restricted, the reinforcing piece tape and the cassette maintain a predetermined relative position.

When the tape cassette is assembled into the document punch, the locking protrusion fits into the reinforcing piece delivery mechanism of the document punch, the locking protrusion slips out of the small hole, and the small hole locks into the reinforcing piece sending mechanism, so that the tape cassette built into the cassette The reinforcing piece tape is reliably delivered by a reinforcing piece sending mechanism that is linked to handle operation. When the tape cassette is attached to the document punch, the above-mentioned state in which the reinforcing strip tape is locked to the reinforcing strip delivery mechanism is maintained.

When the tape cassette is removed from the document punch, the locking protrusion is locked in the small hole again by the elasticity of the bullet, so even if the cassette is removed, the relative position between the cassette and the reinforcing piece tape does not change.

[Embodiment] Figures 1 to 3 show an embodiment of the tape cassette for document punching of the present invention. The tape cassette 1, which is attached to a document punch 20 shown in FIGS. This reinforcing piece tape has reinforcing pieces B attached at regular intervals in the longitudinal direction of the release tape C, and in the center of the reinforcing piece B of the above-mentioned reinforcing piece tape,
A small hole D for tape feeding is provided.

The cassette 1 has an accommodating part 2 for accommodating the reinforcing piece tape, and a beak part 3 for leading out the reinforcing piece tape from the accommodating part 2, and the beak part 3 extends from the surrounding wall of the accommodating part 2. Between the upper wall 5 and the upper wall 5 below the upper wall 5, an inner wall 7 is formed, through which the tape C drawn out from the accommodating part 2 passes, and further below the inner wall 7. It consists of a lower wall 9 provided with a guide passage 8 through which the tape passes. This guide passage 8 is for folding the tape led out from the outlet passage 6 at the tip of the inner wall 7 and then guiding it along the opposite surface of the inner wall 7.
That is, a reinforcing piece outlet 10 through which the reinforcing piece B is sent out is provided between the upper wall 5 and the middle wall 7.

The middle wall 7 and the lower wall 9 are, as shown in FIG.
The inner wall 7 is curved in an arc shape, and cut grooves 12, 12 are provided on both sides of the curved portion to provide a bullet piece 13 that protrudes into the guide passage 8. The free end has a locking protrusion 14 that locks into a tape feeding small hole D provided in the reinforcing piece tape.
is provided.

As shown in FIG. 2, the lower wall 9 protrudes by a small width on both the left and right sides of the beak portion 3, and the middle wall 7 also has bullet pieces 13 cut off by the cut grooves 12, 12. The lower part has an overhanging edge having the same width as the lower wall 9, but the lower end part is made wider to guide the feeding of the tape C.

At the tip of the beak portion 3, the upper wall 5 and the middle wall 7 protrude slightly from the lower wall 9, so that the cassette 1
When it is assembled into the base 21 of the punch 20, which will be described later, its tip will cover the edge of the document A inserted into the punch 20, and the reinforcing piece B sent out from the tip of the beak portion 3 will be ensured. so that it appears on Document A (see Figure 5).

As shown in FIG. 1, the reinforcing strip tape is housed in a wound state in a cassette 1, and its tip passes through a lead-out passage 6, is bent 180 degrees at the tip of an inner wall 7, and is placed in a guide passage 8. The locking protrusion 14 locks into the small hole D to maintain a predetermined relative position with the cassette 1, and when the peeling tape C being drawn out is folded back at the folding part, the reinforcing piece B is automatically removed from the tape. The reinforcement piece is peeled off and sent out onto the document A from the reinforcing piece delivery port 10.

4 to 6 show a document punch for punching a binding hole in which the cassette 1 is incorporated and a reinforcing piece is attached to one side of a document A. It is provided with a punching mechanism for punching holes in a document, and a reinforcing piece sending mechanism for sending out a reinforcing piece B to a document A immediately before punching the holes.

The document punch 20 includes a base 21, a handle 22, and a pair of left and right support plates 23 that attach the handle 22 to the base 21, and a cassette 1 containing a release tape C to which a reinforcing piece B is attached. is formed so as to be attachable to the base 21. The base 21 is
As can be seen in FIG. 4 and other figures, it is made of plastic and has a rectangular planar shape, and the rear half thereof is provided with recesses 25, 25 for incorporating the cassette 1.

The metal base plate 27 stretched over the front half of the base also covers the central part, which is slightly higher than the front half, and has a vertical part 28 (see Fig. 6) formed in the stepped part to allow drilling. This defines the insertion position of document A.

The handle 22 has a support shaft 30 inserted therein.
is supported by a bearing 34 formed by a notched groove in the front end of the vertical portion 32 of the left and right support plates 23, 23, and a wire spring (not shown) wound around the support shaft 30 allows the handle 22 to be free. The end is always raised to a specific height. Further, in the handle 22, a pin 39 attached to a punch shaft 38 that is movable up and down on the support plate 23 is inserted into a through hole 36 located slightly away from the support shaft 30 toward the handle tip side. This through hole 36 has an arc shape centered on the support shaft 30, and its length is determined by the ratchet lever 40 described below.
is the length that allows the ratchet wheel 44 to be rotated by the claw 42 at its tip in order to send out the reinforcing piece.

The ratchet lever 40 is rotatably attached to the handle 22, and when the handle 22 is pushed down, the ratchet lever 40 is rotated by one pawl with a pawl 42 at its tip. This ratchet wheel 44 is integrally provided with a roller 46 which has small protrusions 47 protruding at regular intervals that engage with small holes D for feeding the tape, and by rotation of this roller 48, Small protrusion 4
7 pulls out a specific length of release tape C from the cassette 1. In this case, it goes without saying that the spacing between the small protrusions 47, . . . matches the spacing between the small holes D, .

Further, the reinforcing piece delivery mechanism constituted by the roller 46, ratchet wheel 44, etc. is prevented from rotating in the opposite direction by locking a leaf spring 50 to the pawl of a large ratchet wheel 48 provided integrally therewith. ing.

The recess 25 formed in the base 21 has a locking groove 52 on the bottom wall, and the cassette 1 has the tip of the lower wall 9 of the beak portion 3 abutting against the vertical portion 28 of the metal base plate 27. By locking the protrusion 16 on the bottom wall into the locking groove 52, the installation position into the base 21 is determined, and thereby the tip of the beak portion 3 is aligned with the window hole 5.
5 and protrudes above the front half (see Figure 5).

The roller 46 moves the tape cassette 1 to the base 2.
1, one of the small protrusions 47 abuts against and presses the locking protrusion 14 of the cassette 1, causing it to engage the bullet piece 13.
It is pushed out from the small hole D against the elastic force of ing. Therefore, when the cassette 1 is installed in a predetermined position on the base 21, the small protrusions 47 of the roller 46 fit into the small holes D of the tape, and the tape is set in a state where it can be fed out.

Reference numeral 60 in FIGS. 5 and 6 denotes a pressing mechanism that presses and firmly attaches the reinforcing piece B fed onto the document A to the document A before the punch shaft 38 punches a hole in the document. However, detailed explanation thereof will be omitted.

Next, the operation of the document punch described above will be explained.

The reinforcing piece tape is housed in the tape cassette 1 with its leading end passing through the passages 6 and 8 and with the locking protrusion 14 locked in the small hole D.

When this cassette 1 is inserted into the recess 25 of the base 21 and the tip of the lower wall 9 is brought into contact with the vertical portion 28 and the protrusion 16 is engaged with the locking groove 52, the small protrusion 47 of the roller 46 When one of the locking protrusions 14 hits and presses against the elasticity of the elastic piece 13, the locking protrusion 14 slips out of the small hole D and the small protrusion 47 of the roller 46 locks in the small hole D. With,
The protrusions 47 protrude into the guide passage 8. Therefore, by assembling the cassette 1 into the document punch 20, the release tape C becomes ready to be fed a predetermined length by the reinforcing piece feeding mechanism.

When the handle 22 is pushed down in this state, the pawl 42 of the ratchet lever 40 rotates the ratchet wheel 44, so the roller 46 integrated therewith rotates by one pawl of the ratchet wheel 44 and is locked in the small hole D. Small protrusion 47
pulls out the tape by one reinforcing piece and feeds the reinforcing piece B onto the document, and the punch shaft 38, which is lowered by operating the handle, punches a binding hole in the reinforcing piece B and the document A. In this case, the roller 46 abuts against the locking protrusion 14 with the next small projection 47 locked in the small hole D by the rotation of the ratchet wheel 44 by one claw,
Prepare for the next tape feed.

When the cassette 1 is removed from the base 21, the small protrusions 4
The locking protrusion 14, which had been pressed by 7, locks again into the small hole D of the tape due to the elasticity of the bullet piece 13.
Even if cassette 1 is removed from base 21. The relative position between the reinforcing piece tape and the cassette 1 does not change.

[Effects of the Invention] The tape cassette of the present invention is provided with a locking protrusion that locks into the small hole of the reinforcing piece tape and escapes from the small hole by the reinforcing piece feeding mechanism of the document punch. The reinforcing piece can be reliably delivered in synchronization with the mechanism. Furthermore, since the cassette itself is not provided with a reinforcing piece delivery mechanism, it can be made cheaper than a cassette equipped with this mechanism.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the tape cassette of the present invention, where Figure 1 is a sectional view taken along the line X-X of Figure 2, Figure 2 is a front view, and Figure 3 is a state in which the tape is pulled out. FIG. 4 is a perspective view showing an example of a document punch using the tape cassette of the present invention.
FIG. 5 is a side sectional view when the reinforcing piece is sent out, and FIG. 6 is a side sectional view when punched. DESCRIPTION OF SYMBOLS 1... Cassette, 2... Accommodation part, 3... Beak part, 6... Outlet passage, 7... Middle wall, 8... Guide passage, 10... Reinforcement piece outlet, 13... Bullet piece, 14
... Locking protrusion, 20 ... Document punch, 22 ... Handle, B ... Reinforcement piece, C ... Peeling tape, D ...
...small hole.

Claims (1)

[Scope of Claims] 1. A punching mechanism for punching holes in a document by operating a handle, and a reinforcing piece delivery mechanism that feeds out a reinforcing piece to the hole punching position immediately before punching in conjunction with the operation of the handle, and the above-mentioned reinforcement Single feed mechanism,
In a document punch in which a tape cassette containing a reinforcing strip tape formed by pasting reinforcing strips at regular intervals on a release tape is removably attached, and the reinforcing strips are sent out from this tape cassette, the tape cassette is The reinforcing piece tape is configured by a housing part that stores the reinforcing piece tape, and a beak part that leads out the reinforcing piece tape from the housing part, and in the beak part, there is a lead-out passage that leads out the tape along the inner wall. , a guide passage for folding the tape at the tip of the inner wall and guiding it along the opposite surface of the inner wall, and a reinforcing piece outlet opened at the folded part of the tape; A bullet piece is provided that protrudes from the wall side into the guide passage, and the free end of the bullet piece is engaged with a small hole for feeding the reinforcing piece tape, and the small hole and the reinforcing piece are fed out when assembled into a document punch. A tape cassette for document punching, characterized in that it has a protruding locking protrusion that escapes from the small hole when it is locked with a mechanism.