JPH01214567A - Sheet stacking device - Google Patents

Abstract

PURPOSE:To enable a stable operation even in the case of small intervals between sheets by applying the constitution wherein the spherical velocity of an endless belt is made higher than the feed rate of a carriage means. CONSTITUTION:The constitution is so made that the spherical velocity of an endless belt 5 is higher than the feed rate of a feed roller 3. Consequently, a frictional force working in a feed direction increases at a contact part between a sheet 1 ingressing at the peripheral speed of the feed roller 3 and the endless belt 5, and the sheet 1 is stretched to be free from a wrinkle and a folding tendency. Concurrently therewith, the sheet 1 is fed while subjected to a force for deformation into a corrugation form and a sheet feed operation is more stabilized. Furthermore, the time of feed and striking operation after the disengagement of clamping with the feed roller 3 of the sheet 1 and an opposing roller 4 is shortened and even when an interval is shortened between the sheet 1 and a succeeding sheet 1b, there is no occurrence of collision. According to the aforesaid construction, it is possible to stabilize a sheet stacking operation.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a paper sheet stacking device, and particularly to a device having a paper sheet stacking mechanism using an endless bell I. The present invention relates to a suitable paper sheet stacking device.

[Conventional technology]

As a conventional device of this kind, for example, Utility Model Application No. 62-2
A device disclosed in Japanese Patent No. 9355 is known.

This device feeds filter paper sheets that have been transported into a storage section by a pair of feed rollers provided at the rear end of the conveyance path and an endless belt that rotates while engaging with one of the feed rollers.
It is designed to be deposited by dusting it off.

[Problem to be solved by the invention]

In the prior art, only the frictional force generated by the contact between the conveyed filter paper sheet and the endless bell 1 after it leaves the grip between the pair of feed rollers provided at the end of the conveyance path. Since the paper sheets are fed into the storage section and blown off by the paper sheets, some operating time is required until the paper sheets are completely deposited in the storage section.

Moreover, since the endless bells 1 to 1 are configured to rotate by being hooked to one of the pair of feed rollers, the endless belts and the circumferential speed become slower than the feed speed of the conveyance path, and the endless belts rotate. In order to completely knock off the paper sheets with bell 1~, it will take more than -room time. Therefore, in order to perform a stable stacking operation that prevents subsequent sheets from colliding with preceding sheets before they are completely blown off, it is necessary to It is necessary to maintain the interval above a certain level, and if there is an abnormality in the conveyance interval of the previous stage or if the conveyance interval of paper sheets becomes shorter due to an increase in processing speed, there is a limit to the stability of operation.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to solve the above-mentioned problems in conventional paper sheet stacking devices, and to solve the problems described above in the conventional paper sheet stacking apparatus. It is an object of the present invention to provide a paper sheet stacking device that can perform stable operation even in various cases.

[Means to solve the problem]

The above-mentioned object of the present invention is to provide a paper sheet stacking device in which an endless belt for feeding the paper sheets into a storage box is provided at the end of a conveying means for transporting paper sheets, in which the circumferential speed of the endless belt is adjusted to This is achieved by a sheet stacking apparatus characterized in that the sheet stacking apparatus is configured to be faster than the feeding speed of the conveying means.

[Effect]

In the paper sheet stacking device according to the present invention, the paper sheets conveyed by the above-mentioned conveyance means are engaged with the endless belt at the end of the conveyance path. Here, since the circumferential speed of the endless belt is faster than the feed speed of the conveyance path, the frictional force in the feed direction that acts on the contact portion between the paper sheet entering at the feed speed of the conveyance path and the endless bell 1 increases, Paper sheets are pulled by an endless belt.

As a result, folds, wrinkles, etc. perpendicular to the feeding direction of the paper sheet are smoothed out, and the paper sheet is deformed into a wave shape, so that the paper sheet is stably fed to a predetermined position in the storage box. After that, when the feeding by the conveying means is finished, the paper sheets are fed by an endless belt with a high circumferential speed, so the feeding operation and dusting operation time are shortened, and the interval between the sheets being conveyed sheet by sheet is shortened. Even if the length is short, it is possible to realize a paper sheet stacking device that can perform stable operation without causing rear collision of paper sheets.

〔Example〕

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

FIG. 2 is a side cross-sectional view showing the main parts of a paper sheet stacking apparatus according to an embodiment of the present invention, and FIG. 3 is a partially cross-sectional view taken in the direction A of the apparatus. In both figures, 1 is a paper sheet conveyed from a transport path (not shown), 2 is a storage section for paper sheets, 3 is a feed roller rotated by a drive source (not shown), and 4 is opposed to the feed roller 3. A driven opposing roller 5 is an endless belt having elasticity that rotates as the feed roller 3 rotates.

The endless belt 5 is connected to a feed roller 3 as shown in FIG.
Since there is no guide plate 41 at the opposite position of the endless belt 5, the endless belt 5 is pressed against the perpendicular rough by the pressing rollers 6a and 6b, as shown in FIG. Thus, it is held in the upper part of the storage section 2 in a protruding state overlapping with the guide plate 41.

The shaft 8 to which the belt roller 7 is fixed and the shaft 9 to which the feed roller 3 is fixed are connected to a pair of gears 10.
．． 11, and the endless belt 5 is configured to rotate at a constant speed ratio with the rotation of the feed roller 3. Here, the number of teeth of the gears 10 and 11 is set so that the circumferential speed of the endless belt 5 is faster than the circumferential speed of the feed roller 3.

The opposing roller 4 is supported by a shaft 8 via a bearing 12, and is configured to be driven independently of the belt roller 7 by a pair of opposing feed rollers 3. Further, the rigidity of the endless belt 5 is set higher than that of paper sheets.

Hereinafter, the filter paper sheet stacking operation in this embodiment configured as described above will be explained in FIGS. 2, 3 and 1(a) to (a).
This is explained by d).

As shown in FIG. 2, the paper sheet 1 fed from the previous stage in the direction of arrow p is sent to the feed roller 3. While being held between the opposing rollers 4, the rotating endless belt 5 is pushed up by the rigidity and deformed into a waveform as shown in FIGS. 1(a) and 3. As a result, even if the paper sheet 1 has folds, wrinkles, etc., its rigidity in the feeding direction is high and it does not bend midway, and the paper sheet 1 moves along the guide plate 41 from FIG. 1(a) to FIG.
As shown in b), even after being released from the nip between the feed roller 3 and the opposing roller 4, the endless belt 5 deforms it into a wave shape and feeds it until the tip comes into contact with the front edge 2a of the storage section 2.

Immediately after this, due to the frictional force generated by the contact pressure with the paper sheet 1, the endless belt 5 moves as shown in FIG.
As shown in FIG. 1(d), the paper sheet 1 is dusted onto the already piled paper sheet group A, with the side thereof being the tight side and the side indicated by the arrow being the slack side. be dropped. At this time, if the sheet 1 has folds, wrinkles, etc., in the conventional device described above, the feeding and dusting operations of the sheet 1 will be delayed or unstable, and the subsequent sheet 1b will be I had a collision with 1. However, in the apparatus shown in this embodiment, since the circumferential speed of the endless bell 1-5 is faster than the speed of the feed roller 3, the paper sheet 1 entering at the circumferential speed from the feed roller 3 contacts the endless bell 1. The frictional force acting in the feed direction increases on the part,
The paper sheet 1 is fed while being subjected to a force that smooths out wrinkles and folds and at the same time deforms it into a waveform, making the operation more stable.

Furthermore, since the circumferential speed of the endless belt 5 is high, the operation time for feeding and knocking off the sheet 1 after it is released from the grip between the feed roller 3 and the facing roller 4 is shortened (Fig. 1 (c) →
(see (d)), even if the distance between the paper sheet 1 and the subsequently fed filter paper sheet 1b is shortened, there is no rear-end collision and a stable stacking operation can be performed.

FIG. 4 is a side sectional view showing the main parts of a paper sheet stacking apparatus showing another embodiment of the present invention. In this embodiment, instead of the guide plate 41 shown in the previous embodiment, the paper sheet 1
The belt 42 that guides the belt to the storage section 2 is engaged with and rotated by the feed roller 3 so as to face and overlap the endless bell 1-5. The configuration of this embodiment also provides the same effects as those of the previously described embodiments. In addition, in FIG. 4, bells 1 to 43. Pulley 44
constitutes a conveyance path that faces the belt 42 and pinches and conveys the paper sheet 1.

〔Effect of the invention〕

As described above, according to the present invention, in the paper sheet stacking device in which an endless belt for feeding the paper sheets into a storage box is provided at the end of the conveying means for transporting the paper sheets,
Since the circumferential speed of the endless belt is configured to be faster than the feeding speed of the conveying means, stable operation can be performed even when the filter paper sheets are conveyed one by one at short intervals. This has the remarkable effect of making it possible to realize a paper sheet stacking apparatus.

[Brief explanation of the drawing]

FIGS. 1(a) to (d) are side sectional views showing the operation of a paper sheet stacking apparatus according to an embodiment of the present invention, and FIG. 2 is a side sectional view showing main parts of the paper sheet stacking apparatus according to the embodiment. FIG. 3 is a partial cross-sectional view taken in six directions, and FIG. 4 is a side sectional view showing a main part of another embodiment of the present invention. 1a: Already stacked paper sheets, 1b: Subsequent paper sheets, 2: Storage section, 3: Feed roller, 4: Opposing roller, 41 guide plate, 42: Belt, 5: Endless belt, 6
a, 6b: Press roller, 7: Belt roller. Section 1 (a) a

Claims (1)

[Claims] 1. In a paper sheet stacking device that is provided with an endless belt for feeding the paper sheets into a storage box at the end of a conveying means for conveying paper sheets, the circumferential speed of the endless belt is determined by the feeding by the conveying means. A paper sheet stacking device characterized in that it is configured to be faster than the speed.