JPH01150651A - Paper feed mechanism - Google Patents

Abstract

PURPOSE:To facilitate regulation of pinching force of a driven roller with respect to a drive roller, in a paper currency feeding mechanism, by setting pinching force of the driven roller in the central section lower than that of the side driven roller. CONSTITUTION:A bracket 37 is arranged above a carry path substrate 1 and forming a paper sheet carry path 5. When the bracket 37 is fixed, a central driven roller 39 pressure contacts with a central drive roller 3a where spring constant of a leaf spring 38 is set such that pinching force of the roller 39 will be lower than that of the opposite side driven rollers 41, 42. When the roller 39 is mounted through the leaf spring 38 onto the bracket 37 and pressed against the roller 3a, pinching force of the roller 3a does not vary considerably due to deformation of the leaf spring 38 even if pinching force of the rollers 41, 42 is regulated, and thereby pinching force of the rollers 39, 41, 42 can be regulated in short time by regulating pinching force of only the rollers 41, 42.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention aims to reduce the pinch force of the driven roller that presses the drive roller when feeding the paper sheet to a predetermined location. The present invention relates to a paper sheet feeding mechanism that can be easily adjusted so that sheets do not shift in position.

(Prior Art) For example, when sorting paper sheets consisting of banknotes according to their denominations, a paper sheet processing device for performing this sorting is used. This paper sheet processing device has a receiving section in which multiple types of paper sheets are placed in a mixed state, and a paper sheet taken out one by one from this receiving section. It has a paper sheet feeding mechanism and an inspection department that determines the amount of paper sheets sent out by this feeding mechanism.

A paper sheet feeding mechanism is provided between the receiving section and the inspection section in order to send the paper sheets taken out one by one from the paper sheet counting section to the inspection section. As for the sort feeding mechanism, it was not possible to use a feeding mechanism using an endless belt because the distance between the receiving section and the inspection section was small. Therefore, in order to stably feed paper sheets, the conventional paper sheet feeding mechanism consists of a drive roller, a side driven roller that presses above the drive roller and rotates as a result, and side driven rollers on both sides of the drive roller. Paper sheets were sent to the inspection department using multiple driven rollers. An example of a conventional sheet feeding mechanism of this type is shown in FIG.

In FIG. 4, a drive shaft 2 connected to a drive source (not shown) is pivotally attached to the lower surface of a conveyance path board 1 whose both ends are fixed to side plates (not shown). A plurality of drive rollers consisting of a central drive roller 3a and side drive rollers 3b arranged on both sides are fixed to the drive shaft 2, and are rotatable in the direction of the arrow. There is.

Brackets 4 are disposed above the conveyance path base plate 1 at appropriate intervals, and form a paper sheet conveyance path 5 together with the conveyance path base Fil. A central driven roller 6 is in pressure contact with the central driving roller 3a in the center of the bracket 4, and is in pressure contact with the side driving rollers 3b at symmetrical positions on both sides thereof. A pair of side driven rollers 8.9 are each pivotally mounted by an axle 11.12.

The mounting provided on both sides of the bracket 4 is one piece 4.
Vertical elongated holes (paths shown) are bored in a and 4b, and both ends of the bracket 40 are attached to side plates (not shown) by screws passing through these elongated holes. Pressing force of the central driven roller 6 against the central driving roller 3a and side driven rollers 8.9 against the side driving roller 3b.
The pressure contact force is as follows when mounting both ends of the bracket 4:
To install b, adjust the position and align drive shaft 2 and shaft 7 as shown by arrows.
．． It is adjusted by setting the distance between 11 and 11.

However, the error in the outer diameter of each driven roller 6.8.9;
Or each driven roller 6.
8.9 and the respective drive rollers 3a, 3b may have different pressing forces, that is, pinch forces when feeding paper sheets. For this reason, in the paper sheet feeding mechanism described above, the mounting condition of each driven roller 6, 8, 9 is adjusted so that the pinch force thereof is the same.

(Problems to be Solved by the Invention) In the conventional paper sheet feeding mechanism, as described above, the three pinch forces of the central driven roller 6 and the side driven rollers 8 and 9 on both sides are Therefore, there was a problem in that it took time to adjust the pinch force of the conveyance roller.

An object of the present invention is to easily adjust the pressing force of each driven roller against the driving roller, that is, the pinching force between the driving roller and the driven roller, so that paper sheets can be sent out in an appropriate posture. Therefore, it is an object of the present invention to provide a paper sheet feeding mechanism.

[Structure of the Invention] (Means for Solving the Problems) The paper sheet feeding mechanism of the present invention includes a transport path substrate that forms a transport path for paper sheets, and is arranged at an appropriate interval above the transport path substrate. 11 A bracket that forms a path for paper sheets together with the transport path board; a drive roller that is pivotally mounted to the transport path board and connected to a drive source to rotate; and a drive roller that is in pressure contact with the drive roller to send the paper sheets. In a paper sheet feeding mechanism having a plurality of driven rollers, a central driven roller mounted on the bracket and side driven rollers pivotally mounted on the bracket at symmetrical positions on both sides thereof, the central driven roller It is characterized in that the pinch force of the rollers is set smaller than the pinch force of the side driven rollers.

(Function) According to the sheet feeding mechanism of the present invention, the central driven roller is attached to the center of the bracket supporting the driven roller to convey the sheet with a pinch force smaller than the pinching force of the side driven roller. By attaching the roller to the bracket, the pinch force of the driven roller relative to the drive roller can be easily adjusted by simply adjusting the positions of both ends of the bracket and adjusting the pinch force of the driven rollers of both measuring sections. be able to.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. Note that the same function as that shown in FIG.

Components will be denoted by the same reference numerals and their explanation will be omitted.

FIG. 1 shows an apparatus for processing paper sheets such as banknotes. A receiving unit 22 provided in an example part of the paper sheet processing device 21 has a plurality of types with different amounts (for example, 10,000 yen, 50,000 yen, etc.).
Paper sheets 23 consisting of banknotes (1,000, 1,000 yen), etc., are stacked in an arbitrarily mixed state. The lowest paper sheet 23 among the paper sheets 23 is rotated in the direction of the arrow and the paper sheet 23 is placed one by one.
A take-out roller 24 that takes out the sheets one by one is in pressure contact with the sheet.

Downstream side of take-out roller 24 (right side in Fig. 1)
An inspection section 25 for determining the type, etc. of paper sheets 23 is disposed therein. A paper sheet feeding mechanism 26 of the present invention, which will be described later, is arranged between the receiving section 22 and the patrol section 25, and a drive roller, which will be described later, of this paper sheet feeding mechanism 26 is connected to a motor 27 as a drive source. ing.

The paper sheets 23 whose type etc. have been determined in the inspection section 25 are
A conveying device 28 consisting of a pair of endless belts and a similar conveying device 29 transport and store them in a corresponding one of the storage containers 31, 32, 33. Intake unit 22
As described above, since the distance between the inspection unit 25 and the inspection unit 25 is small, it is difficult to arrange a conveyance device such as the conveyance device 28, which is an endless belt. In addition, the IC sheets 23 to be transported to the inspection section 25 are sent out in an appropriate posture with no misalignment so as not to hinder the inspection section 25 in determining the size of the paper sheets 23 and reading the image. There is a need.

For this reason, a sheet sequential feeding mechanism 26 as described based on FIGS.
is provided in between. Figure 2 shows the paper M type feeder t!
26 is a perspective view showing an embodiment of the invention. Il! Feeding path board 1
Both sides of the paper sheet processing device 21 have side plates 35 and 36 (
(see Figure 3). Transport path board l
As shown in FIG. 2, the drive rollers 3a, 3b attached to the first It is driven in the direction of the arrow by a motor 27 shown in the figure.

Further, the brackets 37 are arranged above the conveyance path board 1 at appropriate intervals and form the paper sheet conveyance path 5. The bracket 37 is attached to the side plate 35 by screws (not shown) inserted into long holes (not shown) formed in the pieces 37a and 37b.
It is attached to 36.

A center driven roller 39 made of an elastic material such as rubber is pivotally attached to the free end of a leaf spring 38 whose base is fixed to the center of the tip of the bracket 37. A pair of side driven rollers 41 . They are each pivotally connected to a bearing 45.

In FIG. 2, the bracket 37 is attached to one piece 37.
By attaching the rollers a and 37b to the side plates 35 and 36, the side driven rollers 41 and 42 press against the side drive roller 3b with an appropriate pressing force P2. The above installation is piece 37
To install a and 37b, adjust the position and align the shaft 43 and drive shaft 2.
The distance between m (1+, and the distance between axis 44 and drive axis 2!
2, so that the pressing force P2 of the side driven roller 41 and the side driven roller 42 against the drive roller 3b on each side, that is, the pinching force for pinching and conveying the paper sheet 23, becomes the same. is adjusted to

When this bracket 37 is attached, the central driven roller 39 also has a pressing force P1 on the central driving roller 3a.
However, the spring constant of the slope spring 38 is set so that the pinching force of the center driven roller 39 is smaller than the pinching force caused by the pressing force P2 of both measuring section driven rollers 41 and 42.

The binge force of the side driven rollers 41 or 42 can be adjusted by attaching the central driven roller 39 to the bracket 37 via the leaf spring 38 and pressing it against the central driving roller 3a. However, the pinch force between the central driven roller 39 and the central driving roller 3a does not change significantly due to the deformation of the leaf spring 38.
The pinching force adjustment of each driven roller 39, 41, 42 can be easily adjusted within a short time by only adjusting the pinching force of the side driven rollers 41.42 on both sides thereof.

The paper sheet feeding mechanism 26 whose pinch force is adjusted is
The paper sheets 23 taken out from the taking-in section 22 can be fed into the inspection section 25 in an appropriate posture without being misaligned, and the paper sheets 23 can be accurately discriminated within the inspection section 25.

[Effects of the Invention] As explained above, according to the present invention, there is a central driven roller that conveys paper sheets with a pinch force smaller than the pinching force of the side driven rollers at the center of the bracket that supports the driven roller. By attaching the roller to the bracket, the pin deformation of the driven roller relative to the drive roller can be easily adjusted by simply adjusting the positions of both ends of the bracket and adjusting the pinch force of the driven rollers of both measuring sections. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a front view schematically showing a paper sheet processing apparatus to which the paper sheet feeding mechanism of the present invention is applied, and FIG. 2 is a perspective view of the paper sheet feeding mechanism showing an embodiment of the present invention. FIG. 3 is an operational view showing the adjustment method, and FIG. 4 is a front view showing an example of a conventional sheet feeding mechanism. 1...Conveyance path board 3a...Central drive roller 3b...Side drive roller 5...Paper sheet conveyance path 23... ... Paper sheets 27 ... Drive source (motor) 37 ... Bracket 38 ... Leaf spring 39 ... Center driven roller

Claims (2)

[Claims] (1) A conveyance path board that forms a conveyance path for paper sheets, a bracket that is arranged above it at an appropriate interval and forms a path for paper sheets together with the conveyance path substrate, and a bracket that is pivotally attached to the conveyance path substrate. a drive roller that is connected to a drive source and rotates; a plurality of driven rollers that press the drive rollers to send paper sheets; a central driven roller that is mounted on the bracket; and a symmetrical drive roller on both sides thereof. A paper sheet feeding mechanism having side driven rollers pivotally connected to brackets at positions, wherein the pinch force of the central driven roller is set smaller than the pinch force of the side driven rollers. Paper sheet feeding mechanism. (2) The sheet feeding mechanism according to claim 1, wherein the central driven roller is attached to the bracket by a leaf spring.