JPH0726289Y2 - Paper sheet stacking device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is a paper that keeps paper sheets that have been identified or read by a bill validator, a slip, a letter reader such as a postcard, etc. in an orderly stacked state. The present invention relates to a leaf collecting device.

[Conventional technology]

As conventional paper sheet stacking devices, there are those disclosed in Japanese Patent Application Nos. 62-295181, 63-109066 and 63-33233.

FIG. 5 is a side view of a general paper sheet stacking device shown therein, FIG. 6 is a side view of a conventional example of a paper sheet receiver that can be used in such a paper sheet stacking device, and FIG. [Fig. 6] is a bottom view of Fig. 6.

In FIG. 5, 1 is a unit case of the paper sheet stacking apparatus, 2 is an opening / closing door of the unit case 1, and 3 is a stacking space in which the paper sheets are stored. Paper sheets that have been identified by an identification unit (not shown) are introduced from an inlet provided at the top of the unit case 1. Reference numeral 4 denotes a roller that keeps contact with the pulley 6 via the stacker belt 5 at the entrance portion and holds the conveyed paper sheets between the stacker belt 5. The stacker belt 5 is stretched between pulleys 6, 7 and 8 and is driven by a stacker motor 9 via a drive belt 10. Normally, one stacker belt 5 is provided on each of the left and right sides, but one wide stacker belt is provided at the center, and three stacker belts 5 or more are provided.

11 is an upper surface guide for supporting the shafts of the pulleys 6, 7 and 8 and located above the guided paper sheet, and 12 is arranged along the lower surface side of the upper surface guide 11 and is guided. It is a paper receiver that holds the received paper sheets between the stacker belt 5. The sheet receiver 12 is attached to a mounting plate 13 via a support pin 17 so as to swing substantially horizontally and back and forth.

Reference numeral 101 denotes a pressing plate that is swingably attached to a lower portion of the mounting plate 13 via a support shaft 102, and 103 denotes a wire, a rope, a chain, or the like that vertically connects the pressing plate 101 and the sheet receiver 12. The members, 104A and 104B, press the both ends of the connecting member 103
The fixing metal fittings are fixed to the 01 and the paper tray 12, respectively.

The vertical flange 13A of the mounting plate 13 having an inverted L shape is slidably held by the rail 14 provided on the rear surface 501 of the unit case 1.

One end of 15 is hooked with the metal fitting 1a on the back surface 501 of the case, and after the direction is changed by the spring receiving pulley 16, the other end is a flange.
It is a coiled spring that is hooked to the metal fitting 13B of 13A,
The spring 15 urges the paper receiver 12 upward by the spring force toward the stacker belt 5.

This reaction force causes a conveying surface force on the stacker belt 5. When the thickness of one sheet is t and the weight is w, each time the sheet is stacked, the sheet receiver 11 is moved downward by t due to the force w, so that the spring from k = w / t. The spring constant of 15 is determined, and theoretically, the conveying surface force of the stacker belt 5 is kept constant without being affected by the number of stacked sheets. However, considering the weight of the mounting plate 13 and the paper tray 12, etc. naturally, the rail 14 and the mounting plate 13
Consider the sliding friction force between and.

In the paper sheet stacking apparatus configured as described above, when the identified paper sheets are guided to the upper part of the unit case, the stacker belt 9 is driven by the stacker motor 9 and the paper surface is conveyed by the conveying surface force. Items are stored on the paper receiver 12. Then, as the sheets are successively stored on it, the sheet receiver 12 descends together with the mounting plate 13, and the sheets can be kept in the accumulating space 3 in the accumulated state.

The above structure is not the same in detail as those of the above-mentioned three documents. In Japanese Patent Application No. 62-295181, the paper receiver is attached to the mounting plate 1.
It is fixed diagonally to 3, and in Japanese Utility Model Sho 63-33233, paper tray 12
Is attached to the mounting plate 13 by the support pin 17 so as to be swingable,
In Japanese Patent Application No. 63-109066, a pressing plate 101 is attached to a swinging paper sheet receiver via a connecting member 103.
In addition, there is also a case where the paper receiver is fixed horizontally and the stacker belt 5 and the upper surface guide 11 are horizontal, without citing a reference.

The reasons why there are various aspects of the paper sheet receiving are also shown in the respective literatures, but in summary, it is not always due to the technological progress, but also based on the stiffness of the paper sheets to be handled, that is, the thickness. The purpose is to prevent jamming near the leading end of the inlet roller and the stacker belt 5, that is, to prevent the paper sheets from curling in the conveying process, and to improve the ease of taking out the paper sheets from the stacking device.

Further, the rail 14 of each document is described only by sliding or sliding the mounting plate 13 in the vertical direction, and there is no detailed description thereof.

6 and 7 show a specific example of a conventional paper sheet mounting plate and rail, and an L-shaped back plate (not shown) forming a part of a unit case for stacking paper sheets. A pair of rails 14a made of shaped steel are fixed. On the mounting plate 13a to which the horizontal paper receiver 12a is fixed, one side 4
Roller, a total of 8 rollers a to h, 12 rollers on one side in the left-right direction,
A pair of four rollers i to l and a total of 12 rollers are supported by a total of 8 shafts without reference numerals. The mounting plate 13a extends to the rear surface of the rail 14a due to the rollers c, d, g, h on the rear surface side of the rail 14a, and a is provided on one side to eliminate play in the front-rear direction.
Four pieces of b, c, d or e, f, g, h are provided. The rollers e, g, i do not appear in the figure.

[Problems to be solved by the device]

In the above-mentioned conventional technique, the conveying surface force of the stacker belt 5, the effective storage amount of the stacking space 3 of the unit case 1 and the like will be examined.

It is not preferable in terms of the conveyance function that the conveyance surface force of the stacker belt 5 changes in the front-rear direction (conveyance direction) and the left-right direction when stacking the paper sheets and lowering the mounting plate 13. In particular, when there is an imbalance in the left-right direction or when it occurs, the paper sheets are subjected to a force such that they are conveyed obliquely, and a so-called skew occurs, making it impossible to stack them. Even if the paper receiver 12 is of the horizontal or diagonal fixed type described above, the support pin 17
This is also a common problem for swinging back and forth.

6 and 7 using a large number of rollers a to l, this problem is somewhat solved by increasing the pitch of the upper and lower rollers, but it becomes a problem of reducing the effective storage amount of the accumulating space 2. Therefore, not only are a large number of rollers and their shafts precisely machined, but also the rails are pressed strongly against the rails, resulting in a heavy movement, and it takes time to adjust the assembly.

There is also a method of inserting a self-lubricating material such as nylon or Teflon (trademark) between the rail 14 and the mounting plate 13, but this not only causes a problem in the service life, but its sliding friction force is equivalent to the conveying surface force by the spring 15. Variation occurs.

From the same point of view, the roller and the rail in FIG. 6 have rolling friction, but the roller and the shaft have sliding friction, which causes a certain variation in the conveying surface force. Therefore, it is conceivable to use a miniature bearing or to use a roller itself as a rolling bearing, but it becomes more complicated and expensive.

An object of the present invention is to obtain a paper sheet stacking device that stabilizes the conveying surface force of the stacker belt and increases the effective storage amount of the unit case.

[Means for Solving the Problems]

In the paper sheet stacking device of the present invention, a vertically movable mounting plate is attached to the back plate of the unit case by urging it upward with a spring, and a paper sheet receiver is mounted on the mounting plate. In a paper sheet stacking device equipped with a conveying means for introducing paper sheets in contact with the upper surface of a plurality of stacked paper sheets, an inner rail and a stroke length of the mounting plate are added to the length of the inner rail. An outer rail of a length or more, two rows of rolling elements that roll between the rolling surfaces of the outer rail and the inner rail, a cage for this rolling element, and a hook for the end of this cage. A rolling linear motion body is formed from a pair of upper and lower belts having both ends fixed to the inner rail and the outer rail, and the outer rail is fixed to the back plate and the inner rail is fixed to the mounting plate.

[Action]

The relative vertical movement between the back plate of the unit case and the mounting plate provided with the paper sheet receiver is performed by means of a rolling linear moving body, so that in principle rolling friction occurs and the coefficient of friction is extremely small. Therefore, the magnitude of the force of the biasing spring that balances the weight of the stacked paper sheets is often affected, and the stacking surface force of the stacker belt is kept substantially constant, and the paper sheets are transported by the transport means. You can prevent the so-called jam that curls up.

The rolling surface and rolling element of the rolling linear motion body are machined with extremely high precision as seen in the technology of rolling bearings, and there is little deviation in vertical movement, especially in horizontal direction, and Since there is no left-right unbalance and there is no so-called skew in which the paper sheets skew, there is no possibility of stacking due to such skew.

Even if the vertical dimension of the mounting plate and the dimensions of the inner rail are almost the same, a large number of rolling elements can be rolled on this inner rail, so the rigidity to the left and right runout is large, and the inner rail is enlarged to reduce the storage amount. There is no such thing.
The belt holds the positions of the rolling elements and the cage according to the relative movement of the inner rail and the outer rail, and ensures the rolling movement.

Since the rolling linear motion body is manufactured and assembled as a unit, almost no adjustment is required.

〔Example〕

FIG. 1 is a perspective rear view of the embodiment of the present invention, and FIG.
FIG. 3 is a side view of the drawing, FIG. 3 is a sectional view taken along line III-III of the rolling linear motion body shown in FIG. 1, and FIG. 4 is a longitudinal sectional view of FIG.
1 is a view of the back plate 501 seen through in FIG.

The components shown in these drawings are used in the general paper sheet stacking device shown in FIG. The same members are denoted by the same reference numerals, but the following relative movement mechanism is provided without providing the rail 14 on the back plate 501 in FIG.

1 to 4, the outer rail 201 of the rolling linear motion body 200 is attached to the back plate 501 with the screw 301 and the nut 302. And via the spacer 303 to the installation plate 203 fixed to the inner rail 202 of the rolling linear motion body 200,
The mounting plate 13 is attached by screws 304 and nuts 305. The outer rail 201 is longer than the length of the inner rail 202 plus the stroke length. The mounting plate 13 is the same as that shown in FIG. 5, and is substantially horizontal via a support pin (not shown). A paper receiver 12 is attached so as to swing back and forth.

Now, the internal structure of the rolling linear motion body 200 will be described mainly with reference to FIGS. 1, 3, and 4. Outer rail 2
The pair of inner surfaces of 01 and the pair of outer surfaces of the inner rail 202 are rolling surfaces for a large number of ball-shaped two rows of rolling elements 205 held by a cage 204. Belts 207 (207a and 207b) are respectively hung on sliders 206 (206a and 206b) at both ends of the retainer 204, and both ends of each belt are fixed to the center points 211 and 212 of the outer rail 201 and the inner rail 202.

When the rolling element 205 having the radius r moves by a small angle θ on the rolling surface of the outer rail 201 and moves by rθ, the inner rail 202 also moves relative to the rolling element 205 by rθ. That is, the inner rail 202 moves 2rθ with respect to the outer rail 201. After all, the movement of the inner rail is twice the movement of the rolling elements. The mounting plate 13 and the installation plate 203 are fixed to the inner rail 202 and move integrally with the inner rail 202, and the cage 204 moves integrally with the rolling element 205.

Incidentally, a simple structure in which both ends of the inner rail of length A have a stroke to move up and down to the stoppers 208 at both ends of the outer rail of length L, and both ends of length B of the row of rolling elements are also exactly at each of the both ends. , The required row length B of the rolling element is B = L / 2 + A / 2. When the length of the row is shortened by saving it a little as in the embodiment, and the inner rail projects from the row of rolling elements by the length C at both ends of the stroke (naturally C <A), the required B is required. The length of ₁ is B ₁ = L / 2 + A / 2−2C = B−2C. Since the induction of the above-mentioned two equations is easy, the process is omitted.

The belt 207 (207a, 207b) prevents only the cage 4 and the rolling elements 205 from sliding due to their own weight and slipping and dropping from the rolling surface, and the position corresponding to the positional relationship between the inner rail and the outer rail. Secure.

The slider 206 (206a, 206b) is a resin having self-lubricating property. Considering this as a pulley having this point as a fixed point, both ends of the belt hung on the pulley are the outer rail 201 and the inner rail 202 are above and below. It is well known to move the same distance in opposite directions, which is consistent with the previously described movement of the inner rails being twice that of the rolling elements. Therefore the slider
The rolling element held by the retainer 204 provided with 206 always rolls without slipping.

It has the function described in the section of [Operation] of the sheet stacking apparatus having the above structure.

[Effect of device]

In this invention, a rolling linear moving body is provided between the back plate of the paper sheet stacking device and the mounting base provided with the paper sheet receiver to move the paper sheet up and down, so that the accumulated coefficient of friction is small. It does not affect the force of the spring that balances the weight of the stacker, has the effect of stabilizing the stacker belt transport surface force and stabilizing the transport function. There is no imbalance between the left and right forces, and it is possible to prevent inability to convey and stack due to skew, etc., and to maximize the amount of paper sheets that can be stored. It has the effect of being easy.

[Brief description of drawings]

FIG. 1 is a perspective rear view of the embodiment of the present invention, and FIG.
FIG. 3 is a side view of the drawing, FIG. 3 is a III-III sectional view of the rolling linear motion body shown in FIG. 1, and FIG. 4 is a longitudinal sectional view of FIG.
FIG. 5 is a side view of a general paper sheet stacking device, FIG. 6 is a side view of a conventional paper sheet receiver usable in such a paper sheet stacking device, and FIG. 7 is a bottom view of FIG. Is. 1 ... Unit case, 3 ... Stacking space, 5 ... Stacker belt, 11 ... Top guide, 13, 13a ... Mounting plate, 15 ...
… Spring, 16 …… Spring receiving pulley, 200 …… Rolling linear motion body, 303 …… Spacer.

Claims (1)

[Scope of utility model registration request] 1. A mounting plate which moves up and down is attached to a back plate of a unit case by urged upward by a spring, a paper sheet receiver is mounted on the mounting plate, and a plurality of stacked sheet receivers are mounted on the paper sheet receiver. In a paper sheet stacking device equipped with a conveying means for introducing a paper sheet into contact with the upper surface of the paper sheet, an inner rail and an outer rail having a length equal to the length of the inner rail plus the stroke length of the mounting plate. A rail, two rows of rolling elements that roll between the rolling surfaces of the outer rail and the inner rail, a retainer for the rolling element, and both ends of the retainer hung on the end of the retainer. A paper sheet stacking device, characterized in that a rolling linear motion body is formed from a pair of upper and lower belts fixed to an outer rail and an outer rail, and the inner rail is fixed to the back plate and the mounting plate, respectively. .