JPH0610010B2 - Band wrap tape feeder for paper bundle band wrapping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper bundle banding device for bundling a predetermined number of paper sheets with a banding tape, which is used to feed the banding tape toward the paper bundle. The present invention relates to a tape feeding device.

[Prior Art] A band-wrapping tape is used for bundling paper sheets such as banknotes every predetermined number of sheets, and a paper-bundle band-wrapping device for winding the band-wrapping tape around a predetermined number of paper sheets. Is used.

This paper bundle banding device is equipped with a rotary ring, inserts a paper bundle inside the rotary ring, feeds the band sealing tape by a tape feeding mechanism, and clamps one end of the band sealing tape in the paper bundle. The bundle of paper is clamped by a member, and the bandgap tape is gripped so that it can be sent out by a chuck member attached to the rotary ring.
The rotary ring is rotated to wind it around a paper bundle, and the other end of the band-sealing tape is superposed on the already wound portion and fixed by means of thermocompression bonding or the like.

Usually, in a paper bundle band-sealing device, a band-wrapping tape is wound around a tape roll, mounted on the paper-bundle band-wrapping device, and the band-wrapping tape is supplied from this tape roll to perform band-sealing on the paper bundle. I have to. here,
The band-wrapping tape supplied from this tape roll is designed such that the tip end is first inserted into the paper bundle and then wound around the paper bundle. Is performed by a chuck member attached to the rotary ring. On the other hand, the insertion of the band-sealing tape into the paper bundle is performed by a tape feeding device having a driving roller and a driven roller. The feeding of the banding tape performed using this tape feeding device is to feed the banding tape to a predetermined position where the leading edge of the banding tape can be interrupted in the paper bundle before being inserted into the rotary ring. Then, when the paper bundle is inserted into the rotary ring, the leading end of the band-sealing tape is fed so as to be sandwiched inside the paper bundle. If these banding tapes are not fed accurately, it may not be possible to insert the banding tape into the paper bundle, or the banding tape may deviate from the paper bundle during winding around the paper bundle. There is.

In the tape feeding device according to the conventional technology, it is composed of a driving roller and a driven roller, the band-sealing tape is sandwiched between both rollers, and the driving roller is driven to rotate,
The driven tape was driven to rotate while feeding the band-sealing tape. However, when the band-sealing tape is made to travel in the tangential direction with respect to both rollers, the contact portion between the band-sealing tape and the roller is substantially in line contact. When supplying the band-sealing tape wound around the tape roll, the resistance to feeding varies depending on the tape remaining amount in the tape roll, and when the tape remaining amount is large, the resistance to tape feeding increases, There is a possibility that slip may occur and accurate tape feeding may not be possible.

In this regard, for example, as in Japanese Patent Laid-Open No. 58-193220, a drive roller driven by a drive motor is guided so as to wind the banding tape over a predetermined angle, and a driven roller is pressed to press the banding tape on the drive roller. There is also known a structure in which a spring is provided on the driven roller in the direction in which the driven roller is pressed against the driving roller.

[Problems to be Solved by the Invention] Here, as described above, the band-sealing tape is supplied from the roll state, and therefore, the resistance due to the back tension based on the tape remaining amount in the tape roll is caused. It is working. On the other hand, the pressing force of the driven roller against the drive roller is determined by the force of the spring acting on it, and therefore the pressing force is constant. On the other hand, the resistance due to the back tension changes according to the remaining tape amount. For this reason, if the spring force is set so that it can be sent at the maximum resistance value without slipping, the load of the drive roller becomes too large even if the resistance value decreases, and it is smaller than the maximum resistance value. The spring force has a problem that slip may occur and the tape feeding accuracy cannot be completely suppressed.

The present invention has been made in order to solve the problems of the prior art as described above, and an object of the present invention is to make it possible to accurately feed a banding tape without slipping with a simple configuration. is there.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a banding tape feeding mechanism including a driving roller which is rotationally driven by a tape feeding motor and a driven roller which is rotated by the driving roller. The banding tape is guided around the driven roller so as to be wound by a predetermined angle, and the driven roller is mounted on a supporting member which can swing around a supporting shaft, and is brought into contact with and separated from the driving roller by the supporting member. It is characterized in that it is configured to be displaceable in any direction, and that the support member causes the spring to act in the direction in which the driven roller is pressed against the drive roller.

[Operation] The present invention is configured as described above, and in order to perform band-sealing on a paper bundle, a tape roll of band-sealing tape is installed in the paper-bundle band-sealing device and a tape guide roller provided at an appropriate position is used. A tape feeding mechanism provided with a driving roller and a driven roller, and by operating the tape feeding mechanism, the leading end of the band-sealing tape is sandwiched inside the paper bundle,
After that, the band-wrapping tape is chucked by a chuck member attached to the rotary ring and wound around the paper bundle, thereby band-sealing the paper bundle.

Here, the feeding toward the paper bundle of the banding tape described above is
The banding tape is wound around the driven roller by a predetermined angle, then sandwiched between the driven roller and the driving roller, and the driving roller is rotationally driven. Then, when the drive roller is rotationally driven, the band-sealing tape is fed toward the sheet bundle, but if there is resistance to the feeding of the band-wrapping tape at this time, the pressing force in the direction in which the driven roller contacts the drive roller is increased. That will increase.

When the resistance changes, the pressure contact force of the driven roller with the drive roller can be changed accordingly. As a result, the pressing force of the driven roller against the drive roller is adjusted according to the back tension resistance that changes depending on the remaining tape amount of the tape roll. Therefore, whether the resistance to tape feeding is large or small,
The proper pressing force is always exerted, and even when the resistance is large, there is no slip and the banding tape is fed reliably, and when the resistance is small, the pressing force of the driven roller against the drive roller is also small, so the load of the tape feed motor is reduced. It will be reduced.

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

First, FIG. 4 shows the overall structure of the paper bundle banding device. In the figure, reference numeral 1 denotes a sheet bundle formed by aligning a predetermined number of sheets, 2 denotes a banding tape for bundling the sheet bundle 1, and the sheet bundle 1 is clamped by a clamp member 3 including a support 3a and a clamp plate 3b. The banding tape 2 is wound in this state, so that the banding of the sheet bundle 1 is performed. Then, in order to send out the band-sealing tape 2, it comprises a tape feeding motor 4 constituting a tape feeding mechanism, a driving roller 5a and a driven roller 5b.
4 is provided with a tape feeding mechanism 5 which feeds the band-wrapping tape 2 to the sheet bundle splitting member 6 via the tape feed mechanism 5, and the sheet bundle splitting member 6 feeds the banding tape 2 into a sheet bundle. It can be inserted into the inside of 1.

Next, 7 indicates a rotary ring having a space for inserting the paper bundle 1 therein, and the rotary ring 7 is rotatably supported by support rollers 8 provided at three positions. The rotary ring 7 is provided with a chuck member 9 for chucking the band-sealing tape 2.
The reference numeral 9 is composed of a fixed chuck roller 9a and a movable chuck block 9b which comes close to and separates from the chuck roller 9a.

A ring drive motor 10 is provided to rotate the rotary ring 7, and a drive gear 11 is attached to an output shaft 10a of the ring drive motor 10. The drive gear 11 is connected to the rotary ring 7. It meshes with the ring gear 12 provided. 13 is a band-wrapping tape wrapped around the bundle of paper 1.
2 is a tape pressing member for preventing loosening, and 14 is a heater for thermocompressing the band-sealing tape 2. The tape pressing member 13 and the heater 14 can be operated by the cam mechanism 15, respectively. And this cam mechanism
15 is driven by an actuating motor 16. Further, in the figure, 17 is a solenoid for displacing the sheet bundle splitting member 6 between an operating position in which the sheet bundle 1 is inserted inside the sheet bundle 1 and a non-operating position separated from the sheet bundle 1, and 18 is operated by a solenoid 19. ,
A cutter for cutting the end of the band-sealing tape 2.

The paper bundle banding device is constructed as roughly described above, and a tape roll (not shown) serving as a supply source of the banding tape is attached to wind the banding tape 2 in the paper bundle banding device around the paper bundle 1. The band-sealing tape feeding device for feeding the band-sealing tape 2 supplied from the tape roll so as to be sandwiched inside the paper bundle 1 has a structure as shown in FIGS. 1 and 2.

That is, as shown in FIG. 1, the band-sealing tape 2 is guided midway through the tape guide roller 20 to the tape feeding mechanism 5 and wound around the driven roller 5b of the tape feeding mechanism 5 at a predetermined angle. The band-sealing tape 2 is changed in direction so that the feeding direction becomes a substantially right angle or an acute angle. The driven roller 5b, which is rotated following the drive roller 5a of the tape feeding mechanism 5, is rotatably supported by a bracket 21 as a support member, as shown in FIG. The bracket 21 is formed by bending a plate body into a U shape.
It has side plate parts 21a, 21a and a connecting plate 21b for connecting the side plate parts 21a, 21a, and the driven roller 5b is mounted on a rotary shaft 22 mounted between the side plate parts 21a, 21a. Part 21
A support shaft 23 is inserted between a and 21a so that the driven roller 5b can be rotated by the support shaft 23 in a direction in which the driven roller 5b comes into contact with and separates from the drive roller 5a. The contact position of the driven roller 5b with respect to the drive roller 5a is the drive roller 5a.
At that time, the band-sealing tape 2 is located on the tape supply side from the position where the band-sealing tape 2 moves away from the paper bundle 1. Therefore, when the driven roller 5b is rotated in the direction of the arrow in FIG.
The driven roller 5b is pressed against the driving roller 5a. Further, a torsion spring 24 is attached to the support shaft 23, and one end of the torsion spring 24 has a support plate 25.
And the other end abuts on the connecting plate 21b of the bracket 21,
As a result, the driven roller 5b is configured to urge the driven roller 5b in a direction in which the driven roller 5b contacts the driving roller 5a.

The present embodiment is configured as described above, and its operation will be described next.

First, the chuck member 9 is held in a position where the band-sealing tape 2 can be mounted, and the tape feed motor 4
By driving, the tape feeding mechanism 5 feeds the band-sealing tape 2 to a predetermined position where it is inserted into the paper bundle splitting member 6 via the chuck roller 9b and the chuck block 9a. Then, when a bundle of papers 1 composed of a large number of paper sheets is aligned and inserted into the rotary ring 7, the bundle of papers 1 is divided into left and right by the paper bundle splitting member 6, and the bundle of papers 1 is mounted. When the stack of paper 1 is loaded in this way,
The tape feed motor 4 is driven again, and the band-sealing tape 2 guided by the tape feeding mechanism 5 to the sheet bundle splitting member 6 is inserted into the inside of the sheet bundle 1 until the sheet bundle splitting member 6 is removed from the sheet bundle 1. Escape, and then use the clamp member 3 to
The banding tape 2 is held so as not to deviate from the sheet bundle 1 by clamping the tip of the.

In this state, when the band-sealing tape 2 is chucked by the chuck member 9 of the rotary ring 7 and the ring drive motor 12 is operated to rotate the rotary ring 7, the band-sealing tape 2 chucked by the chuck member 3 is moved to the chuck member 3
When the band-wrapping tape 2 reaches a predetermined length, the cutter 18 operates to cut off the end of the band-wrapping tape 2 while it is being fed out and is wound around the paper-bundle 1. Then, when the rotary ring 7 rotates, for example, 1.75, the tape pressing member
13 operates to press the vicinity of the end of the band-sealing tape 2 so as not to loosen the bundle of paper 1, and while the tape-pressing member 13 presses the band-sealing tape 2, the heater 14 operates to operate the band-sealing tape. The two ends are thermocompression bonded, thus
When the banding for 1 is completed, the stack 1 of paper is taken out.

Then, when the removal of the bundle of paper 1 is completed, the bundle of paper separating members 6
Is returned to the operating position, the banding tape 2 is inserted into the sheet bundle splitting member 6 through the gap between the chuck block 9a and the chuck roller 9a, and the standby state for banding the next sheet bundle is obtained. Therefore, it is possible to continuously perform the banding operation for the bundle of papers by repeating the above-described operation.

Here, the tape-sealing tape 2 is rotated by the driven roller 5b of the tape feeding mechanism 5 from the tape guide roller 20 immediately before the tape-sealing tape 2 at a substantially right angle, and is sandwiched between the drive roller 5a and the driven roller 5b. When the tape feed motor 4 is actuated, the drive roller 5a rotates and this rotational force is also transmitted to the driven roller 5b.
The band-sealing tape 2 sandwiched between 5b is sent toward the sheet bundle splitting member 6.

At this time, the band-tapping tape 2 has resistance to the feeding. Examples of this resistance include hack tension due to the remaining amount of the band-sealing tape 2 in the tape roll and resistance of a resistance member attached to adjust the winding tightness of the band-sealing tape 2 around the paper bundle 1. Of these, the hack tension changes depending on the remaining amount of the band-wrapping tape 2 on the tape roll. However, since the driven roller 5b mounted on the bracket 21 can rotate about the support shaft 23 and is biased by the torsion spring 24 in the direction of contacting the drive roller 5a, the drive roller 5a The driven roller 5b is pressed against the drive roller 5a during rotation. Moreover, since the tape 5 is wound around the driven roller 5b by a predetermined angle, the tape 2 is wound around the driven roller 5b.
Since a resistance such as a back tension acting on the roller directly acts on the driving roller 5a, the pressing force against the driving roller 5a changes according to the magnitude of this resistance. Since the back tension described above changes according to the remaining amount of the tape roll, the pressing force of the driven roller 5b against the drive roller 5a also changes according to this change.

Therefore, regardless of the resistance of the band-sealing tape 2, it is possible to reliably feed the band-sealing tape 2 by the tape feeding mechanism 5 without causing inconvenience such as slipping, and the tape feeding of the tape feeding mechanism 5 can be performed. Can be done accurately.
Further, when the resistance against the feeding of the band-sealing tape 2 is small, the pressing force of the driven roller 5b against the driving roller 5a also becomes small, so that the load of the tape feeding motor 4 is reduced, and the power consumption can be saved. it can.

Moreover, the drive roller is used while using the paper bundle banding device for a long time.
Although the 5a and the driven roller 5b may be worn, the pressing force of the driven roller 5b against the drive roller 5a can be sufficiently exerted regardless of such wear.

Further, when replacing the tape roll, the leading end of the band-sealing tape 2 wound on a new tape roll must be manually loaded between the driven roller 5b and the drive roller 5a. At this time, as shown in FIG. As described above, when the driven roller 5b is rotated against the torsion spring 24, the driven roller 5b is separated from the drive roller 5a, so that the banding tape 2 can be loaded extremely easily.

[Effects of the Invention] As described in detail above, according to the present invention, a banding tape feeding mechanism is configured by a driving roller that is rotationally driven by a tape feeding motor and a driven roller that is rotated by the driving roller. Is guided so as to be wound around a driven roller by a predetermined angle, and the driven roller is mounted on a supporting member that can swing around a supporting shaft, and the supporting member makes contact with and separates from the driving roller. Since the support member is structured such that the driven roller is pressed against the drive roller by a spring, the amount of tape remaining in the tape roll of the band-sealing tape changes and the back tension changes. Even if there is a resistance that changes with the feeding of the band-sealing tape, the pressure contact force of the driven roller to the drive roller changes according to this resistance change. As a result, a constant driving force can always be applied to the band-sealing tape, and an unnecessary load is not applied to the tape feed motor, and there is no risk of slippage occurring when the band-sealing tape is fed.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of a banding tape feeding device showing an embodiment of the present invention, FIG. 2 is an external view showing a mounting portion of a driven roller, FIG. 3 is an operation explanatory diagram, and FIG. It is a whole block diagram of an apparatus. 1: paper bundle, 2 band sealing tape, 4: tape feed motor, 5:
Tape feed roller, 5a: drive roller, 5b: driven roller, 7:
Rotary ring, 20: Tape guide roller, 21: Bracket, 23: Support shaft, 24: Torsion spring.

Claims (1)

[Claims] 1. A band-wrapping tape is wrapped around the paper-bundle by rotating a rotary ring by a chuck member attached to a rotary ring having a space for inserting the paper-bundle inside so that the band-wrapping tape can be fed out. In the paper bundle banding device configured as described above, a drive roller that is rotationally driven by a tape feeding motor and a driven roller that is rotated by the drive roller constitute a feeding mechanism for the banding tape, and the banding tape is predetermined on the driven roller. The driven roller is guided so as to be wound by an angle, and the driven roller is mounted on a supporting member that is swingable about a supporting shaft, and is displaceable in a direction in which the driven roller comes into contact with and separates from the driving roller, and A spring is applied to the support member in a direction in which the driven roller is pressed against the drive roller. Bundling tape feeding device of a paper bundle bundling apparatus according to symptoms.