JPH0534215B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a paper bundle binding device that binds a paper bundle consisting of a predetermined number of paper sheets with a binding tape. This invention relates to a feeding device for paper bundle binding tape.

[Prior Art] A banding tape is used to bundle paper sheets such as banknotes into a predetermined number of sheets.
A paper bundle binding device is used.

This paper bundle binding device includes, for example, a rotary ring, inserts the paper bundle inside the rotary ring, and
The banding tape is sent out by the tape feeding mechanism to be sandwiched within the paper stack, and in this state, the paper stack is clamped by the clamp member, and the banding tape is chucked so as to be fed out by the chuck member attached to the rotary ring. It is known that the rotary ring is rotated to wrap the rotary ring around a bundle of paper.

Here, the banding tape to be wrapped around the paper bundle is fed out from a roll, and is cut using a cutter each time a paper bundle is banded and tied. . If the banding tape is fed with the cut end by the chuck member in this way, the cut end of the banding tape will be in a state where it can move freely. As a result, positional deviation occurs, making it impossible to position the banding tape when thermocompression bonding it onto the already wrapped part, and the ends of the banding tape are overlapped diagonally and glued and fixed. This has the disadvantage of causing a problem.

Therefore, in order to prevent such positional deviation from occurring when the banding tape is fed after it is cut, various improvements have been made to the chuck member constituting the banding tape feeding device. Such a conventional device is, for example, constructed by combining a chuck crawler that is rotatably mounted and a chuck block that is installed in a non-rotating state, and the chuck crawler has a large diameter in the center and a diameter that contracts toward both ends. A convex and curved surface part is formed on the chuck block, and the chuck block is mounted so as to be opposed to the large diameter part of the chuck crawler, and the central part in the width direction of the banding tape is formed between the chuck block and the chuck block. It is known that the banding tape is fed by being sandwiched between the two.

In this way, by sandwiching the widthwise center portion of the banding tape between the large diameter portion of the chuck crawler and the curved surface portion of the chuck block and feeding the banding tape in a state in which it is in contact with them, the banding tape can be reliably positioned. It becomes possible to send it in the same state, and it becomes possible to prevent its position shift.

[Problems to be Solved by the Invention] By the way, if the chuck member constituting the banding tape feeding device is constituted by the chuck roller and chuck block formed as described above to feed the banding tape, the chuck roller Of the parts facing the chuck block, the gap between the large diameter parts of the chuck crawler must be set to be the narrowest so that the central part of the banding tape can accurately come into contact with them. Must be. For this reason, when attaching the chuck crawler and chuck block to a member such as a rotor ring that rotates them, it is necessary to ensure that they are in an extremely vertical position, which makes the work of assembling these chuck members troublesome. In addition, if either the chuck crawler or the chuck block is installed even slightly at an angle, the narrowest part between the chuck crawler and the chuck block that comes into contact with the banding tape will be affected by the thickness of the chuck crawler. The position is shifted either upward or downward from the diameter part, and if the banding tape is fed by such a chuck member, there is a drawback that the positional deviation in feeding the banding tape is promoted. .

The present invention has been made in view of the above-mentioned points, and its purpose is to provide good assembling performance and to be able to reliably feed the banding tape with the central portion thereof being held and in contact with each other. Therefore, it is an object of the present invention to provide a paper bundle binding tape feeding device that can feed the binding tape toward a paper bundle without causing positional deviation.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a drum crawler having a large diameter bulge in the central portion and a small diameter portion in both ends. The chuck block is formed with a concave curved portion facing the chuck crawler,
A ridge is formed in the center of the curved portion to sandwich the banding tape between the bulge of the chuck crawler, and the radius of curvature of the curved portion and the ridge is larger than the radius of the bulge of the chuck crawler. That is.

[Operation] The present invention is constructed as described above, and its operation will be explained next.

First, the chuck crawler and chuck block that constitute the chuck member are separated from each other, and a banding tape is inserted between them.In this state, the paper bundle is inserted into the rotary ring, and the tip of the banding tape is inserted into the inside of the paper stack. Insert it into the Thereafter, the chuck roller and the chuck block are brought close to each other so that the banding tape is held between them, and the banding tape held by the chuck member is wound around the paper bundle by rotating the rotary ring. Then, when the banding tape has been fed a predetermined amount, it is cut, and this cut free end is superimposed on the part that has already been wrapped, and is bonded and fixed by means such as heat sealing. .

Therefore, in order to prevent positional deviation from occurring when feeding the banding tape by the chuck member,
The part of the chuck crawler and chuck block that comes into contact with the banding tape must be at the center of the banding tape, but the center part of the chuck crawler should have a large diameter, and the part of the chuck block facing the chuck roller should have a concave curved surface. Since the curved surface is formed with a protrusion in the center, and the radius of curvature of the curved surface and the protrusion is larger than the radius of the thick diameter part of the chuck crawler, either the chuck crawler or the chuck block is slightly tilted. Even if it is attached, the narrowest part of the protrusion is between the thick diameter part of the chuck crawler and the thick diameter part of the chuck crawler at any position in its longitudinal direction. This makes it possible to smoothly feed the banding tape.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

First, FIG. 3 shows an example of a paper bundle binding device. In the figure, reference numeral 1 indicates a paper bundle made up of a predetermined number of paper sheets, and 2 indicates a banding tape for bundling the paper bundle 1. This banding tape 2 is wrapped around the paper stack 1, and its ends are already tied together. The banding tape 2 is bonded and fixed by overlaying the finished part of the paper bundle 1 on top of the wrapped part and heat-pressing it. For this purpose, one side of the banding tape 2 is coated with hot melt adhesive. adhesive is applied. Then, this paper bundle 1 is clamped by a clamp member 3 consisting of a support 3a and a clamp plate 3b with the banding tape 2 sandwiched therein, and is bound by the banding tape 2. ing. Further, a tape feed roller 4 and a guide roller 5 are provided to feed the banding tape 2 into the inside of the paper bundle 1.

Next, reference numeral 6 indicates a rotary ring having a space into which the paper bundle 1 is inserted, and the rotary ring 6
is rotatably supported by support rollers 7 provided at three locations. Then, the rotary ring 6
There is a chuck member 8 that chucks the banding tape 2.
is provided, and the chuck member 8 is composed of a pair of chuck pieces that are close to and separated from each other,
When the banding tape 2 is inserted into the paper bundle 1, these chuck pieces are separated to allow the banding tape 2 to pass through, and when the rotary ring 6 is rotated, the chuck pieces are brought close to each other and the banding tape 2 is held between them. I am now able to do this. Further, a cutter 9 for cutting the banding tape 2 is installed between the tape feed roller 4 and the guide roller 5, and the banding tape has a length necessary for wrapping one bundle of paper 1. When the cutter 2 is sent out, the cutter 9 is activated to cut it.

Next, at 10, a predetermined amount of banding tape 2 is applied to the paper bundle 1.
a tape pressing member that is pressed against the side of the paper bundle 1 to prevent the end of the banding tape 2 from loosening when wrapped around the paper stack 1; 11 is a part on which the end of the banding tape 2 has already been wrapped; A heat-sealing member for heat-sealing is shown superimposed on the tape pressing member 10 and heat-sealing member 1.
1 is adapted to be displaced by a cam mechanism 12 between its operating position and a non-operating position away from the rotary ring 6.

Here, the chuck member 8 for holding the banding tape 2 and wrapping it around the bundle of papers is composed of a chuck roller 13 and a chuck block 14, as shown in FIGS. The chuck crawler 13 is rotatably attached to an upright rotating shaft 15, and the chuck crawler 13 has a bulge portion 13a with a large diameter at its center.
The diameter is then reduced toward the upper and lower ends, and each of the upper and lower ends has a regulating plate 1.
6 and 16 are installed in series. On the other hand, the chuck block 14 has a circular arc groove 1 formed in the rotary ring 8.
7, and the chuck block 14
cannot rotate, but can move along the arcuate groove 17. The chuck block 14 is normally urged by a spring 18 in the direction of contacting the chuck roller 13, and by rotating the lever 19 and pushing the pin 20 implanted in the chuck block 14, the chuck block 14 is pushed. Chat 14 Crawler 13
It is now possible to separate it from the
The portion of the chuck block 14 that faces the chuck crawler 13 is a concave curved surface 14a that curves in the rotational direction of the chuck crawler 13, and this curved surface 14a faces the chuck crawler 13 over a range of about 90 degrees to 180 degrees. Furthermore, the curved surface 14a has a protrusion 21 protruding from the center thereof in the direction of the curve.
The radius of curvature of the curved surface 14a and the protrusion 21 is formed to be slightly larger than the radius of the bulge 13a of the chuck roller 13.

This embodiment is constructed as described above, and its operation will be explained next.

First, by moving the chuck block 14 along the arcuate groove 17 against the spring 18,
The chuck roller 13 and the chuck block 14 are separated from each other, and the banding tape 2 is inserted between them via the tape feed roller 4, and in this state, the paper bundle 1 is
is inserted into the rotary ring 6, and the tip of the banding tape 2 is inserted into the inside of the paper bundle 1. After that, the chuck block 14 is moved to the chuck crawler 13.
The banding tape 2 held by the chuck member 8 is wound around the paper bundle 1 by rotating the rotary ring 6 with the banding tape 2 held close to the chuck member 8. And obi tape 2
When the tape has been fed by a predetermined amount, it is cut by the cutter 9, and the cut free end is superimposed on the part that has already been wrapped, and the tape presser member 10
At the same time, the end portions of the banding tape 2 are bonded and fixed by operating the heat sealing member 11.

Therefore, in order to prevent the feeding of the banding tape 2 by the chuck member 8 from being misaligned, the chuck roller 13 and the chuck block 14 must be
The contact portion of the banding tape 2 with the banding tape 2 must be at the center of the banding tape 2. Here, the center portion of the chuck crawler 13 is a bulged portion 13a with a large diameter, and the chuck block 14 is
The part facing the chuck crawler 13 is a curved surface 1
4a, and since the protrusion 21 is provided at the center of the curved surface 14a, the protrusion 13a of the chuck roller 13 and the chuck block 1
The area between the banding tape 2 and the protrusion 21 of 4 becomes the narrowest part, and the central part of the banding tape 2 is held between them, so that the banding tape 2 is not displaced.
You will be able to send it accurately. Furthermore, since the aforementioned curved surface 14a covers a considerable portion of the chuck crawler 13 in the rotating direction, when the banding tape 2 is fed out, it wraps around the chuck crawler 13, and the chuck crawler 13 Since the regulating plates 16 are attached to both ends of the banding tape 2, the banding tape 2 can be fed even better.

Even if either or both of the chuck crawler 13 and the chuck block 14 are installed somewhat diagonally, the chuck crawler 1 can be attached to the chuck crawler 1 at any position in the longitudinal direction of the protrusion 21.
Since the narrowest part is between the banding tape 2 and the bulging part 13a of the banding tape 2,
3 and the chuck block 14. Therefore, the structure and assembly of the chuck roller 13 and chuck block 14 are facilitated.

[Effects of the Invention] As described in detail above, the present invention provides a method for sealing the band by sandwiching the band sealing tape between the bulge formed in the center of the chuck crawler and the protrusion provided on the curved surface formed on the chuck block. Since the tape is configured to be fed, even if there is a slight error in the assembly of the chuck crawler or chuck block, the banding tape can be fed with the center portion in contact between the bulge and the protrusion. This eliminates any inconveniences such as misalignment of the feeding position of the banding tape.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the configuration of a paper bundle binding tape feeding device showing an embodiment of the present invention, and FIG.
-X sectional view and FIG. 3 are schematic configuration diagrams showing an example of a paper bundle binding device. 1: paper bundle, 2: banding tape, 6: rotary ring, 8: chuck member, 13: chuck crawler,
13a: bulge, 14: chuck block, 14
a: curved surface, 21: protrusion.

Claims (1)

[Claims] 1. It is formed by attaching a rotatable chuck crawler and a chuck block held in a non-rotating state to a rotary ring, and one of the chuck crawler and chuck block can be displaced in the direction toward or away from the other. The chuck member is provided with a chuck member, and the chuck roller and chuck block are separated from each other to allow the banding tape to pass therethrough, and the chuck roller and chuck block are brought close to each other to sandwich the banding tape therebetween. In a paper bundle binding tape feeding device which wraps a binding tape around a paper bundle made up of a large number of paper sheets by rotating a ring, the chuck crawler has a bulge having a large diameter in its center. The chuck block has a concave curved portion facing the chuck crawler, and the chuck block has a concave curved portion facing the chuck crawler, and a bulge portion of the chuck crawler is formed in the center of the curved portion. A feeding device for a paper bundle binding tape, characterized in that a protrusion is formed between the tape and the tape to sandwich the banding tape, and the radius of curvature of the curved portion and the protrusion is larger than the radius of the bulging portion of the chuck roller.