JP2804942B2 - Single wafer supply mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding mechanism capable of surely taking out stacked sheets one by one in a counter device for counting the number of sheets, and more particularly, a sheet housed in a cassette. The present invention relates to a sheet feeding mechanism in which a weight for applying a load to a leaf is improved.

[0002]

2. Description of the Related Art Conventionally, in a paper-like material (hereinafter, simply referred to as a paper sheet) formed of paper, plastic, or the like and cut to a predetermined size, the stacked paper sheets are taken out one by one and taken out. A sheet counter device for counting the number of sheets is known. The above-mentioned counter device accommodates a sheet to be counted and applies a load from above to a pressing force and a sheet from the stacked sheets in the cassette.
The system includes a mechanism for taking out sheets one by one, a mechanism for counting the number of sheets taken out, a display mechanism for displaying the counted number of sheets, and a stocker for storing the sheets taken out one by one.

[0003]

However, in the above-mentioned conventional counter device, the weight that applies a pressing force to the paper sheet accommodated in the cassette is simply shaped to fit in the cassette, that is, accommodated in the cassette. The same shape as the paper leaf,
It is only formed to the same size, and even when a force pushing up from below due to the movement of the delivery roller or the like is applied, only a constant weight of the weight acts as a pressing force at all times. The bottom sheet moves up and down, making it difficult to feed one sheet at a time.
There has been a problem that sending out two or more sheets at the same time or sending out one sheet becomes extremely unstable. Furthermore, it is necessary to make the weight heavy (for example, 430 g) in order to oppose the pressing force from below,
There is a problem that the load is too large and two or more sheets may be sent out at the same time.

[0004] It is an object of the present invention to provide a sheet feeding mechanism capable of reliably taking out stacked sheets one by one.

[0005]

In order to achieve the above object, a sheet feeding mechanism according to the present invention is a sheet feeding apparatus for sequentially feeding a plurality of stacked sheets stored in a cassette from the lowest sheet. In the supply mechanism, a pressurizing weight placed on a paper sheet, the pressurizing weight includes a substrate, a support shaft provided on the paper sheet sending direction side from the center of the substrate, and a support shaft. Two or more swing arms each having one end rotatably supported, the free end of the swing arm protruding from the end of the substrate in the sheet feeding direction, that is, the front end, from the free end of the swing arm. By increasing the dimension between the back end of the substrate and the dimension between the front and rear plates of the cassette, the dimension decreases as the sheet is fed out, and the pressure weight decreases as the sheet height decreases. When swinging, the swing arm rotates upward and freely descends, When the paper is moving upward due to the upward pressing force, the swing arm is held and the pressure weight can be reliably prevented from rising. Up and down movement of the paper sheet can be prevented, the paper sheet can be sent out one sheet at a time, and the weight of the pressing weight can be reduced. In addition, since the lower side of the free end of the swing arm is cut off obliquely, when a pressing force acts upward from below to move the paper sheet upward, the sheet is cut off obliquely and formed. The inclined surface abuts against the inner surface of the front plate of the cassette, a large frictional force acts, and the swing arm is held, so that the lifting of the pressurizing weight can be reliably prevented. Further, two ends of the substrate opposite to the sheet sending direction are provided.
Since the high friction material is provided in more than two places and the free end of the swing arm is covered with the friction material, the pressure weight does not rattle in the cassette, and a smooth downward movement can be secured.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Referring to FIG. 1, a paper sheet counter device to which the present invention is applied will be described. A paper sheet counter device for counting the number of paper sheets 1 formed of paper, plastic, or the like and cut into a predetermined size. And the body 2
A paper cassette 3 provided on the upper part of the main body 2 and holding a large number of paper sheets 1, and a pressurizing weight 4 having an appropriate weight for pressing the paper sheets 1 in the paper sheet cassette 3 are provided. .

A paper sheet outlet 21 opened on one side of the main body 2
And a sheet stocker 22 for receiving the sheets 1 discharged one by one from the sheet discharge port 21, a liquid crystal display unit 23 for displaying the inputted number, the currently counted number, and the like, and an operation for inputting the number to be counted A key 24, a power switch 25, a cassette receiving portion 26 which is open as an upper portion and is formed as a recess having a substantially rectangular cross section, and a pair of delivery pickups which are partially provided on the bottom surface of the cassette receiving portion 26. And a roller 27.

A paper cassette 3 for holding a large number of paper sheets 1
Is a front plate 31, a pair of side plates 32, and a rear plate divided into two pieces.
33, a bottom plate 34 covering the lower surface, a discharge slit 35 formed between the lower end of the front plate 31 and the front end of the bottom plate 34, and a pair of separation claws 36 provided near both ends in the discharge slit 35. It has. Although not shown, an opening is provided in the bottom plate 34, and the upper end of the pickup roller 27 is inserted into the opening, slightly protrudes from the bottom plate 34, and comes into contact with the lowermost surface of the paper sheet 1 to remove the paper sheet. , One by one from the discharge slit 35.

In the paper sheet cassette 3, a pressing weight 4 placed on the paper sheet 1 and applying a predetermined pressing force is provided.
As shown in detail in FIGS. 2 to 4, the board 41 is formed of a plate-shaped member and is smaller than the inside size of the sheet cassette 3, and is a main load. A pair of bearings 8 formed by cutting and raising both side edges at a position from the center of the substrate 41 to the front end, a support shaft 7 having both ends inserted through the bearings 8, 8, and near both ends of the support shaft 7. To
A pair of swing arms 6 each having one end rotatably supported, and two or more (two in this embodiment) rubber or other frictional force provided at the rear end of the substrate 41 so as to cover the edge. High friction material 5 (see FIG. 3) and two or more (two in this embodiment) provided on the back surface of the substrate 41 along the paper sheet 1 sending direction.
And a shock absorbing material 9 made of a urethane foam material or the like formed in a rod shape.

The lower end of the free end 60 of the swing arm 6 is cut off obliquely (see FIGS. 3 and 4), and a friction material 61 such as rubber is provided to cover the horizontal portion and the inclined surface of the free end 60. And
The free ends of the two swing arms 6 and 6 are connected by a connecting rod 62 and are provided so as to protrude from the front edge of the substrate 1, so that the swing arm 6 extends along the substrate 1 (see FIG. 3). The dimension from the free end 60 of the swing arm 6 to the rear end of the substrate 1 is slightly larger than the dimension from the front plate 31 to the rear plate 33 of the sheet cassette 3.

The operation will be described.
When the pressing weight 4 is placed on the paper sheet 1 stored in the inside, the friction material 5 at the rear end of the substrate 1 is moved to the rear plate 33 of the paper sheet cassette 3.
Abuts on the inner surface of
Is in contact with the inner surface of the front plate 31 of the sheet cassette 3 and the swing arm 6 is swung upward (see FIG. 4). It descends with it.
The paper sheet 1 is sent out by the rotation of the pickup roller 27. However, when the paper sheet 1 moves downward when the paper sheet 1 attempts to move up and down with the rotation of the pickup roller 27, the swing arm 6 is moved. Since the pressure weight 4 does not hinder the movement of the pressure weight 4 by moving upward, the pressure weight 4 moves downward in synchronization with the movement of the paper sheet 1.

However, when trying to move upward,
That is, when a pressing force acts upward from below, the free end 60 of the swing arm 6 abuts against the inner surface of the front plate 31 of the sheet cassette 3 and does not rotate downward. Friction material 61 and front plate
Since the frictional force between 31 is large and the friction material 61 is pressed against the inner surface of the front plate 31 and does not rotate upward,
The swing arm 6 is supported and prevents the pressure weight 4 from rising. At this time, the angle θ formed by the straight line L connecting the tip of the free end 60 of the swing arm 6 and the support shaft 7 and the horizontal line H is formed to be approximately 25 degrees, but the angle θ needs to be 15 degrees or more. If the angle θ is less than 15 degrees, it is not possible to obtain a sufficient resistance to a pressing force from below as described later. When the paper sheet 1 is a postcard, the height of the free end 60 of the swing arm 6 from the upper surface of the substrate 1 is preferably 25 mm.

According to this configuration, the swing arm 6 is turned upward when the pressing weight 4 is lowered as the sheet 1 is fed out and the pressure weight 4 is lowered as the sheet 1 is lowered in height. The paper sheet 1 is moved down freely, and the paper sheet 1
Is moving upward, the swing arm 6 is held, and the lifting of the pressing weight 4 can be reliably prevented. Therefore, the vertical movement of the lowest sheet to be fed can be prevented. It is possible to feed out the sheets one by one. Further, since the lifting of the pressing weight 4 can be reliably prevented, the weight of the pressing weight 4 can be reduced (for example, 300 g).

[0014]

Since the present invention is configured as described above, it has the following effects. A pressure weight placed on a paper sheet, the pressure weight being a substrate, a support shaft provided on the paper sheet sending direction side from the center of the substrate, and a rotatable support shaft. Two or more swing arms each having one end supported, the free end of the swing arm protruding from the end of the substrate in the sheet feeding direction, that is, the front end, and the free end of the swing arm being the rear end of the substrate. When the pressure weight is lowered by lowering the height of the paper sheet as the paper sheet is fed out by making the size between When the swinging arm rotates upward and freely descends, while the pressing force from below acts to move the paper sheet upward,
Since the swing arm is held and the lifting of the pressurizing weight can be reliably prevented, the vertical movement of the lowest sheet to be sent can be prevented, and the sheet can be sent out one sheet at a time. And the weight of the pressurizing weight can be reduced. In addition, since the lower side of the free end of the swing arm is cut off obliquely, when a pressing force acts upward from below to move the paper sheet upward, the sheet is cut off obliquely and formed. The inclined portion contacts the inner surface of the front plate of the sheet cassette, a large frictional force is applied, the swing arm is held, and the lifting of the pressing weight can be reliably prevented. Furthermore, a friction material is provided at two or more places at the opposite end of the substrate in the sheet sending direction, and the free end of the swing arm is covered with the friction material. It is possible to secure a smooth descending motion without touching.

[Brief description of the drawings]

FIG. 1 is a schematic structural explanatory view showing an embodiment of the present invention.

FIG. 2 is a plan view showing a pressing weight according to the present invention.

FIG. 3 is a side view showing a pressing weight according to the present invention.

FIG. 4 is a diagram illustrating the operation of the pressurizing weight of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Paper leaf, 2 main bodies, 3 paper leaf cassettes, 4 pressure weights, 5 friction materials 6 swing arm, 7 support shaft, 8 bearing, 9 cushioning member

Claims (3)

(57) [Claims] A pressure weight placed on a sheet in a sheet feeding mechanism for sequentially feeding a plurality of stacked sheets stored in a sheet cassette from the lowest sheet. The pressurizing weight includes a substrate, a support shaft provided on the paper sheet sending direction side from the center of the substrate, and two or more swing arms each having one end rotatably supported by the support shaft. The free end of the swing arm is projected from the end of the board in the sheet feeding direction, that is, the front end, and the dimension between the free end of the swing arm and the rear end of the board is set between the front and rear plates of the sheet cassette. A sheet feeding mechanism characterized by being larger than the dimensions. 2. The sheet feeding mechanism according to claim 1, wherein a lower side of a free end of the swing arm is cut off obliquely. 3. A high friction material is provided at two or more places on an end of the substrate opposite to the sheet feeding direction, and a free end of the swing arm is covered with a friction material. 2. The sheet feeding mechanism according to 2.