JPS59212327A - Loading mechanism for business slip - Google Patents

Abstract

PURPOSE:To increase the loading capacity for business slips by dividing the loading plate into two parts and by installing a loading plate with springs keeping the contact pressure between a pick-up roller and business slips. CONSTITUTION:The loading plate which loads business slips 4 is divided into two parts, one is 1st loading plate 5 generating the contact pressure between a pick-up roller 3 and said business slips 4 and another is 2nd loading plate 7 holding said business slips 4, a supporting point and a spring 11 are installed on said 1st loading plate 5, and another supporting point and a spring 12 holding said 2nd loading plate 7 and a means which changes the pressure of said spring in linkage with a pressing plate 10 which controls the edges of said buisness slip 4. Therefore, the increase of loading capacity of business slips can be planned.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a paper feeding mechanism for an optical character reading device, a mark reading device, a facsimile, etc., and particularly to a form stacking mechanism suitable for automatic paper feeding.

[Background of the invention]

An automatic paper feeding mechanism is generally equipped with a stacking plate on which a certain number of forms are placed, and a pickup roller for feeding out the forms. If there is no contact, proper document sending force cannot be obtained.

For this reason, most conventional devices have adopted a mechanism in which a drive system such as a motor or a clutch is used to move the loading plate to a certain level, and the form is sent out using the pressure of the pickup roller's own weight. Although this mechanism can reliably send out forms, it is expensive and difficult to use in small devices.

What was devised was a mechanism in which one end of the stacking plate (in the opposite direction to the document feeding direction) is supported by a rotatable fulcrum, and the other end is pressed against the pickup roller with a spring. This mechanism can be realized at low cost. However, due to the relationship with the spring constant, when a large number of forms are placed on the loading plate, it becomes impossible to obtain an appropriate contact pressure between the forms and the pickup roller, and the form feeding function is no longer plowed. be.

With this mechanism, a maximum of about 100 documents +1 can be loaded at once on the stacking board.

[Purpose of the invention]

The purpose of the present invention is to improve the above-mentioned drawbacks of the prior art, and to provide a form loading mechanism in which one end of the loading plate is rotatably supported by a fulcrum and the other end is pressed against a pickup roller by a spring. Therefore, it is an object of the present invention to provide a form loading mechanism that can increase the form loading capacity.

[Summary of the invention]

In order to achieve the above object, the present invention provides a form stacking mechanism in which one end of the stacking plate for stacking the forms is rotatably supported by a fulcrum, and the other end is pressed against a pickup roller by a spring. divided into a first loading plate for generating contact pressure between the pickup roller and the form and a second loading plate for supporting the form;
The first loading plate has the fulcrum and the spring, the second loading plate has the fulcrum, the spring supporting the second loading plate, and the spring pressure of the spring regulating the edge of the form. The present invention is characterized in that it is provided with a means for changing the pressure in conjunction with the end face pressing plate.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line B--B in FIG. 1.

1 is a base plate that supports the form loading mechanism;
Support points 6, 8, separator roller 2. The pickup roller 3 and the like are attached. The fulcrum 8 is provided on the base plate on the near side (not shown).

The pickup roller 3I picks up the forms 4 one by one,
It is sent out in the feeding direction shown by arrow A. Separator roller 2
transports the form sent by the pickup roller 3 to an apparatus main body (not shown) such as an optical character reading device, a mark reading device, or a facsimile device. Reference numeral 9 denotes a guide for guiding the destination of the form.

The stacking plates on which the form 4 is placed are a first stacking plate 5 and a second stacking plate 7.
For these two stacking board numbers, the form feeding direction is the first (ne 11, second) neg 12, and the counter form feeding direction is the fulcrum 6. It is supported by a fulcrum 8. Therefore, when a form is placed on it, its weight causes the first stacking plate 5 and the second stacking plate 7 to move to the fulcrum 6, respectively. It moves up and down around the fulcrum 8.

The first spring 11 has the function of pushing up the first stacking plate 5 with its spring pressure and bringing the form on the first stacking plate 5 into contact with the pick-up roller 3 with a pressure within a certain range. This certain range of pressure must be within a range that allows the pickup roller 3 to pick up the forms one by one6.
If the contact pressure is too strong, several forms will be picked up at once, and if it is too weak, not a single form will be picked up. However,
The load applied to the first spring 11 by the weight of #i slip' changes every moment as the slips are picked up one by one, and when the last slip is left.

becomes equal to 0. Regardless of this change in the weight of the form, the first spring 11 must always continue to apply pressure within the above-mentioned fixed range to the pickup roller 3. However, if a load greater than the first knob 114 is applied, it becomes impossible to apply an appropriate pressure to the pickup roller 3 compared to the first knob.

Unlike the conventional technology, where the loading plate is not divided into two parts, only a small number of forms can be loaded because the entire weight of the forms is applied to the pick-up roller by applying appropriate pressure to the pick-up roller. A dedicated first spring 11 is used to divide the loading plate and apply appropriate pressure to the pickup roller 3.
By providing the 1st / It is possible to carry several times as many forms as before.

The second spring 12 does not need to apply a certain range of pressure to the pickup roller 3 like the first spring 11, but since the applied load varies depending on the size of the form 4, the second spring 12 is It is necessary to correct the spring pressure of the spring 12 of the knob 12.

Therefore, as shown in detail in FIG. 2 springs 1
2 and the second loading plate 7 supported by pulleys 13, 14 .
15 and a tension spring 16 via a wire 7. This will reduce the size of form 4,
Even if the load applied to the second spring 12 becomes smaller, if the knob 18 is adjusted to move the end face pressing plate 10 toward the pickup roller 3 by the amount that the form 4 has become smaller, the load on the tension spring 16 will increase. , the spring pressure of the segment 2 spring 12 decreases and becomes a spring pressure commensurate with the size of the form 4. Conversely, when the size of the form 4 increases and the load applied to the second spring 12 increases, the end face pressing plate lO moves in the direction where the load on the tension spring 16 becomes smaller, and the tension spring 16
The spring pressure of the second spring 12 increases as the load decreases. In this embodiment, the part of the wire 17 connecting the end pressing plate lO2 tension spring 16 and the second loading plate 7 that connects to the second loading plate 7 passes through the second spring 12; It is clear that it may be connected to other parts of the second loading plate 7 without passing through it.

In this way, by correcting the spring pressure of the second spring 12 according to the size of the form 4, it is possible to eliminate the difference in level between the first stacking plate 5 and the second stacking plate 7.

〔Effect of the invention〕

As explained above, according to the present invention, in a form loading mechanism that employs a method in which one end of the loading plate is rotatably supported by a fulcrum and the other end is pressed against a pickup roller by a spring, the loading plate is divided and picked up. By providing a dedicated loading plate and spring for ensuring contact pressure between the roller and the form, the form loading capacity can be increased.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing one embodiment of the present invention, and FIG. 2 is a sectional view taken along the line B--B in FIG. 1. l2 base plate, 3: pickup roller. 4: Form, 5: First loading plate, 7: Second loading plate, 10: End face pressing plate, 11: First spring, 12: Second spring, 13.1
4, 15: Pulley, 16: Tension spring, 17: Wire, 18
: Knob.

Claims (1)

[Claims] (1) In a form loading mechanism that adopts a method in which one end of a stacking plate for loading books W4 is rotatably supported by a fulcrum and the other end is pressed against a pickup roller by a spring, the pickup roller of the stacking plate and the bill The first loading plate is divided into a first loading plate for generating contact pressure and a second loading plate for supporting the form. A form stacking mechanism, characterized in that the plate is provided with the fulcrum, a spring for supporting the second stacking plate, and means for changing the spring pressure of the spring according to the size of the form.