JPH079863Y2 - Sheet feeding device gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a gate of a sheet feeding device for separating a sheet to be fed by friction with a roller or an endless belt.

[Prior Art] In a gate of a sheet feeding apparatus that feeds and separates sheets by a conventional belt or roller, in order to separate and take out the sheets one by one, for example, a feed roller and a reverse roller that rotates in a direction opposite to the feed roller are used. Sheets are separated by a roller, or a gate or the like is used to impart a predetermined inclination to the deposited sheets to facilitate separation of the sheets.

[Problems to be Solved by the Invention] However, in the former case, the feed portion of the device becomes large, and there is a problem in realizing the feeding device in a small space. Also, even with the latter type of gate, it was not possible to completely prevent the double feed of the seat.

The present invention has been made in view of the above-mentioned conventional example, and provides a gate for a sheet feeding device that realizes a small-sized sheet feeding device in a small space and reduces double feed of the sheet and sheet curling (peeling). The purpose is to

[Means for Solving the Problems] In order to achieve the above object, the gate of the sheet feeding apparatus of the present invention has the following structure. That is, a gate of a sheet feeding device for separating and delivering a plurality of accumulated sheets, which is disposed near the leading end of the gate on the sheet side and has a plurality of projecting pieces (8) at the leading end (near 71, 72) has a slanting shape in the sheet feeding direction, and a hooking portion (7) engaged with the pressing member (31) to press the belt below the gate. 32) and a window (35) for engaging with the position adjusting member (34) of the sheet feeding device to adjust the vertical position of the gate, and the projecting piece (8) includes: It is curved by being pressed by the pressing member, forms a recess (73) for releasing the pressing to the leading end of the succeeding sheet and creating a gap between the leading ends of the succeeding sheets, and further When pressed by the sheet, it moves in the feeding direction of the sheet according to the thickness of the sheet. It is characterized in that the sheet is bent to press the sheet.

[Operation] In the above configuration, the vertical position of the gate can be adjusted according to the thickness of the sheet, and the projecting piece (8) provided at the tip of the flexible member (7) is curved by being pressed by the pressing member. , Forming a recess (73) for releasing the pressure on the leading end of the succeeding sheet and creating a gap between the leading ends of the succeeding sheets, and when further pressed on the sheet, depending on the thickness of the sheet, The sheet is bent in the sheet feeding direction to press the sheet.

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

[Description of Gate (FIGS. 1 to 3)] FIG. 1 (A) is a front view of the gate 1 of this embodiment, and FIG. 1 (B) is a right side view thereof.

In the figure, 7 is a soft resin member formed near the gate tip, such as urethane foam rubber, which is a soft member having a large friction coefficient and abrasion resistance. Specifically, Tielast (fine cell foamed polyurethane elastomer, manufactured by Polyurethane Kasei Co., Ltd.), iron cell bar (registered trademark of NOK Co., Ltd.) or the like is preferable. Also,
If the wear resistance is not a problem, a similar effect can be obtained even with an ordinary sponge having a friction coefficient and a flexibility that are substantially the same as those of the above resins.

The vicinity of the tip on the inner side (sheet side) of the resin member 7 is cut in an oblique direction, and the stacked sheets are inclined so that the sheets can be easily separated. A plurality of protrusions 8 having a thickness of about 1 mm for pressing a sheet or a card are formed at the tip of the resin member 7.

The protruding piece 8 is normally linear as seen from the side as shown in FIG. 1, but can be freely bent when pressed by a card or the like. Therefore, the degree of this curvature changes according to the thickness of the card, and the pressing force of the gate 1 can be automatically adjusted, so that there is an advantage that a thin card to a thick card can be handled.

Further, when the card is not sent out, the projecting piece 8 has a linear shape as shown in the figure, so that the sending out port of the hopper, for example, is closed, and the card is prevented from coming out of the sheet feeding device. is there.

FIG. 2 is an enlarged view of the contact portion between the gate 1 and the belt 5 of this embodiment, and the same portions as those in FIG. 1 are indicated by the same symbols.

Since the sheet 2 in the hopper 20 is pressed downward with a predetermined pressure by a weight (not shown) or the like, when the belt 5 is moved in the arrow direction, the lowermost sheet is fed in the arrow direction by friction with the belt 5. Reference numeral 71 of the member 7 is a taper portion having an inclination angle of about 45 °, and 72 is a taper portion or a flat portion having an inclination angle larger than that of the taper portion 71. From 71, the cards are separated one by one to make it easier to send.

The protrusion 8 of the gate 1 is pressed against the belt 5 by a pressing member such as a spring, which will be described later, and thus is bent as shown in the drawing to form a recess 73. The concave portion 73 has a function of slightly opening the leading end portion of the sheet 1 pressed by the portion 71, and even when a plurality of sheets pass through the gate 71, the concave portion 73 causes the leading end portion of the sheets to be released. Because there is a gap between them,
Further, there is an effect that the sheets can be separated. In this way, the sheet delivered from the gate is further subjected to frictional force by the projecting piece 8. That is, when the leading edge of the succeeding sheet that has been pressed by the portion 71 is fed into the recess 73, the pressing on the leading edge is released. As a result, even when the succeeding sheets are sent to the recessed portion 73, a slight gap is generated at the leading ends of the sheets. In this way, when the leading end portions of a plurality of succeeding sheets are present in the recessed portion, the leading end portions are acted so as to be separated in the recessed portion, and as a result, there is a remarkable effect that the sheets are delivered one by one. .

Further, even when a plurality of sheets are delivered through the gate 71 and the recess 73, the upper sheet is pressed by the projecting piece 8 and is not delivered, and only the sheet in contact with the belt 5 is delivered. Therefore, it works so as to finally send out the sheets one by one.

Further, the projecting piece 8 is deformed in response to the unevenness of the belt 5, so that the separation and delivery of the sheet 2 are made more reliable.

FIG. 3 is a view showing the state when the sheet 2 is fed, as seen from the front surface of the sheet hopper 20, and the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals and their description is omitted.

In the figure, 31 is a spring for pushing down the gate 1 with a predetermined force, which is wound around a screw 32 and hooked on a hooking portion 33 of the hopper 20. Reference numeral 34 is a turning member for adjusting the vertical position of the gate 1, and its shaft is eccentric. The shaft is inscribed in the window 35 of the gate 1, and the turning member 34 is turned to turn the shaft and the window 35. The contact state changes and the vertical position of the gate 1 is adjusted.
This is to adjust the pressing force of the projecting piece 8 according to the thickness of the sheet 2 and the quality of the paper.

[Experimental results (Fig. 4)] Fig. 4 shows room temperature (60% humidity at 24 ° C) and low temperature (humidity at 0 ° C).
The gate evaluation data of the example is shown based on the experimental results for various papers under the conditions of 38%) and high temperature (85% at 40 ° C.).

Here, in each state of normal temperature, low temperature, and high temperature, double paper when 500 sheets of each paper are fed and the number of "peeling" are shown. Here, “scrap” means a curl-like scratch that occurs at the edge of a sheet such as paper, and the paper used in the experiment here is 90 kg to 180 kg of paper.

As is clear from FIG. 4, a remarkable effect is seen against the double feed and “peeling” which have occurred at a high frequency in the conventional gate, and in particular, a remarkable effect is seen in suppressing the occurrence of “peeling”. To be

As described above, according to the present embodiment, the flexible member is disposed near the tip of the gate, and a plurality of projecting pieces are provided at the tip of the flexible member, so that the double feed of the sheet or the “peeling” of the sheet, etc. There is an effect that can prevent.

Further, according to the present embodiment, since the gap between the gate and the sheet can be adjusted, it is possible to cope with thin sheets to thick sheets, and in the present example, paper weighing more than 55 kg and 180 kg, thick paper such as passbook (2 2.5mm) is also effective.

In the present embodiment, the case where the sheet is transferred by the belt has been described, but it goes without saying that the sheet may be transferred by the roller.

[Effects of the Invention] As described above, according to the present invention, the vertical position of the gate can be adjusted according to the thickness of the seat, and when the gate projection is pressed against the belt or the seat, the curvature of the gate causes Since a depression is formed to release the pressure on the leading edge of the succeeding sheet and a gap is created at the leading edge of the succeeding sheet,
There is an effect that more reliable sheet feeding can be performed by eliminating the double feed of the sheet.

[Brief description of drawings]

1 (A) is a front view of a gate according to an embodiment of the present invention, FIG. 1 (B) is a right side view of the gate, and FIG. 2 is an enlarged view of a contact portion between a belt and the gate portion of this embodiment. FIGS. 3A and 3B are diagrams showing a state in which the sheet is fed, as seen from the front of the sheet hopper, and FIG. 4 is a diagram showing a comparative experiment result of the gate of the embodiment (new gate) and the conventional gate. In the figure, 1 ... Gate, 2 ... Seat, 5 ... Belt, 7
...... Gate, 8 ...... projector, 20 ...... seat hopper, 31 ......
Spring, 33 ... Latch, 34 ... Rotating member, 35 ... Window, 72 ...
… Tapered portion, 73 …… Recessed portion.

Claims (2)

[Scope of utility model registration request] 1. A gate of a sheet feeding device for separating and delivering a plurality of accumulated sheets, the gate being disposed in the vicinity of the tip of the gate on the sheet side, and having a plurality of projecting pieces (8) at the tip. A flexible member (7) whose distal ends (71, 72) are inclined toward the sheet feeding direction, and a hook for engaging the pressing member (31) with the belt below the gate. And a window (35) for adjusting the vertical position of the gate by engaging with a position adjusting member (34) of the sheet feeding device. ) Is curved by being pressed by the pressing member, and forms a recess (73) for releasing the pressing on the leading end of the succeeding sheet and creating a gap between the leading ends of the succeeding sheets. , When further pressed, how to deliver the sheet according to the thickness of the sheet A gate of a sheet feeding device, wherein the gate is curved in a direction to press the sheet. 2. The gate of the sheet feeding device according to claim 1, wherein the flexible member is a fine cell foamed polyurethane resin.