JP2008285286A - Paper feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper feeding device capable of feeding documents respectively formed from a thin paper to a conveying path by smoothly separating one by one without bending them. <P>SOLUTION: In the paper feeding device comprising a paper feeding means for continuously delivering paper sheets and a reverse part for hindering double-feed of the paper sheets by turning in a direction for hindering conveyance relative to the delivered paper sheet, a stacking part for stacking the paper sheets formed from thin papers thereon, a rotary suction part for sucking the stacked paper sheets in order from the top side and rotating it so as to deliver it to the reverse part, and the reverse part are turned in a direction opposite to the hindering direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sheet feeding device that separates stacked forms one by one and sends them to a conveyance path, and more particularly to a sheet feeding device attached to an optical information processing apparatus such as an OCR (optical character reader).

  2. Description of the Related Art Conventionally, a paper feeder 10 attached to an optical information processing apparatus such as an OCR that has been introduced by public institutions and financial institutions, for example, as shown in FIG. A paper support base 2 for transporting the forms 1 and the paper support base 2, and a paper pull-in belt 4 for pulling the stacked forms 1 in the transport direction. Here, the paper supply belt 3 rotates at a low speed, and the form 1 stacked with an inclination angle by the paper support base 2 is pressed against the paper drawing belt 4 based on the rotation. As a result, the paper drawing belt 4 starts conveying the pressed form 1 based on the rotation of the paper drawing belt 4.

  Further, as shown in FIG. 2, the apparatus is separated into a separate belt 6 and a separate belt 6 for separating the forms 1 drawn by the paper drawing belt 4 one by one using the reverse belt 5. And a paper transport belt 7 for transporting the form 1 to a sorting mechanism or the like. Here, the reverse belt 5 rotates in the reverse direction with the paper supply belt 3, so that, for example, when two sheets 1 are pulled in by the paper pull-in belt 4, the lower form 1 is pushed back toward the paper supply belt 3. As a result, the form 1 is separated between the separate belt 6 and the reverse belt 5 one by one and conveyed by the paper conveying belt 7.

  However, in the paper feeding device, when a paper sheet made of thin paper is loaded on the paper support table, the paper sheet has low rigidity, and therefore, when passing between the separate belt 6 and the reverse belt 5, the reverse belt 5 moves in the reverse direction. It sometimes bent due to frictional force.

  In view of the above-described problems, an object of the present invention is to provide a sheet feeding device that can smoothly separate sheets and send them out to a conveyance path without folding a thin paper form.

The present invention adopts the following configuration in order to solve the above points.
A sheet feeding device according to the present invention includes a sheet feeding unit that continuously feeds a sheet, and a reverse unit that rotates in a direction that prevents conveyance of the fed sheet and prevents double feeding of the sheet. In a paper device, a stacking unit that stacks sheets of thin paper, a rotating suction unit that sequentially sucks and stacks stacked sheets from the top side, and rotates and feeds them toward the reverse unit, and the reverse unit as a blocking direction. Includes a controller that rotates in the opposite direction.

  In the above configuration, the rotation adsorption unit includes a rotating body to which the uppermost stacked sheets are pressed, a plurality of suction holes provided along a peripheral surface of the rotating body, and a holder that rotatably holds the rotating body. And a suction path that is provided in the holder and communicates with the suction holes sequentially by the rotation of the rotating body, and sucks the sheet to the peripheral surface through the suction holes.

  According to the present invention, a sheet made of thin paper can be smoothly separated and sent to the conveyance path without being folded.

  Hereinafter, embodiments of the present invention will be described in detail using examples.

<Configuration of Example>
As shown in FIG. 1, a sheet feeding device 100 according to the present invention includes a stacking base 101 for stacking forms 1a which are thin papers having low rigidity, an adsorbing unit 102, a pressing roller 103, a paper supply belt 3a, A reverse belt 5 a, a separate belt 6, and a paper transport belt 7 are provided. Here, the paper feeder 100 has a configuration in which the paper support base 2 of the conventional paper feeder 10 shown in FIG. 3 described above is removed, and a stacking base 101, a suction portion 102, and a presser roller 103 are added. ing. Further, the paper feeding device 100 is adapted to use a form 1a made of thin paper (for example, 30 μm), and feeds a form 1 having a thickness (for example, 180 μm) such as plain paper. Assume that a conventional paper feeder 10 is used.

  The paper supply belt 3a is controlled so that the rotational speed is low when the normal form 1 is conveyed, but the rotational speed is high when the thin form 1a is conveyed.

  The reverse belt 5a rotates in the opposite direction to the separate belt 6 when conveying the form 1a, and conveys the form 1a together with the separate belt 6 in the direction of the paper conveying belt 7.

  The paper transport belt 7 transports the form 1a transported by the reverse belt 5a and the separate belt 6 downward to an optical information processing apparatus (not shown) such as OCR.

  As shown in FIG. 1, the stacking table 101 is an elevator for loading and holding a form 1a made of thin paper. This elevator is configured to move up and down a form 1a not shown in FIG. By raising the elevator, the upper surface of the form 1a positioned at the uppermost part to be loaded and held is pressed against the surface of a rotating body 1021 (to be described later) of the suction unit 102.

  When the user operating the paper feeding device 100 loads the form 1a on the stacking table 101, the user presses a “thin paper feeding button” (not shown) provided on the main body of the device. When the user presses the “thin paper feed button”, a control unit (not shown) of the apparatus main body drives each motor of the apparatus main body with preset specifications as will be described later. On the other hand, when the user performs the paper feeding process for plain paper that is not thin paper, the paper feeding device 100 is replaced with the configuration of the conventional paper feeding device 10 and the form 1 that is plain paper is loaded on the paper feeding support base 2. Then, a “plain paper feed button” (not shown) provided in the apparatus main body is pressed. When the user presses the “plain paper feed button”, a control unit (not shown) of the apparatus main body drives each motor of the apparatus main body according to a preset normal specification.

  As shown in FIG. 2, the suction unit 102 includes a rotating body 1021, a holder 1030 having a suction unit 1022, an inner suction hole 1023, a drive motor 1024 for rotating the rotating body 1021, and the rotating body 1021. A bouley 1025 fitted to the shaft portion 1029 to be supported, a belt 1026 wound around the drive bouley 1024a and the bouley 1025 fixed to the shaft of the drive motor 1024, and a fixing for fixing the holder 1030 Part 1027.

  As shown in FIGS. 1 and 2, the rotating body 1021 has an outer suction hole 1028 that communicates with the inner suction hole 1023.

  The suction part 1022 is connected to a vacuum pump and is configured to align with the inner suction hole 1023 via a suction path 1031 as shown in FIG. The shaft portion 1029 passes through the holder 1030 and is rotatably supported via a bearing.

<Operation of Example>
Hereinafter, the operation of the sheet feeding device 100 according to the embodiment of the present invention will be described. Here, the paper support table 2 (see FIG. 3) is removed in order to perform a paper feed process for the form 1a which is a thin paper.

  When the form 1a is stacked on the stacking table 101, the stacking table 101 presses the upper surface of the stacked uppermost form 1a against the surface of the rotating body 1021 of the suction unit 102 as shown in FIG.

  When a form 1a is loaded on the stacking table 101 and a "thin paper feed button" (not shown) is pressed, a control unit (not shown) of the paper supply device 100 drives each motor provided in the apparatus main body with a preset specification. (Step S101).

  In the suction unit 102, when the drive motor 1024 starts to be driven by control from a control unit (not shown) of the paper feeding device 100, the driving force of the drive motor 1024 is transmitted to the shaft unit 1029 via the belt 1026 and the bouley 1025 to rotate. The body 1021 starts to rotate (step S102). When the inner suction hole 1023 formed in the rotating body 1021 and the suction path 1031 of the holder 1030 are aligned by the rotation of the rotating body 1021, the form 1a is sucked by the outer suction hole 1028 (step S103).

  When the rotating body 1021 rotates, the inner suction hole 1023 is detached from the suction path 1031, but the rear inner suction hole 1023 is intermittently aligned with the suction path 1031. Accordingly, the form 1a is nipped and conveyed by the press roller 103 and the paper supply belt 3a (step S104).

  On the other hand, the reverse belt 5a facing the separate belt 6 is rotationally driven in a direction opposite to the normal direction. Accordingly, the conveyed form 1a is not subjected to the separation force, and is nipped by the separate belt 6 and the reverse belt 5a and further conveyed (step S105).

  The form 1a transported by the reverse belt 5a and the separate belt 6 is transported downward in which an optical information processing apparatus such as an OCR is disposed (step S106).

<Effect of Example>
According to the paper feeding device 100 of the embodiment, when the suction portion 102 is aligned with the suction path 1031 of the holder 1030 and the inner suction hole 1023 formed in the rotating body 1021 that is driven to rotate by driving of the drive motor 1024, the suction is performed. Since the suction part 1022 having a vacuum pump coupled to the path 1031 sucks outside air through the outer suction hole 1028, the uppermost thin paper loaded on the stacking table 101 is placed on the surface of the rotating body 1021 by this suction force. Accordingly, the upper surface of the form 1a made up of the sheets is adsorbed, so that the forms 1a can be separated one by one and fed downward.

  In the above-described embodiment, the case of using a form is described as an example. However, the present invention is not limited to this, and all thin papers having small rigidity can be applied as paper.

It is a figure which shows the structure of the paper feeder of the Example which concerns on this invention. It is a side view which shows the structure of the adsorption | suction part of the Example which concerns on this invention. It is a figure which shows the structure of the conventional paper feeder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Paper feeder 101 Stacking base 102 Adsorption part 1021 Rotating body 1022 Suction part 1023 Inner suction hole 1024 Drive motor 1024a Drive bouley 1025 Bouley 1026 Belt 1027 Fixing part 1028 Outer suction hole 1029 Shaft part 1030 Holder 1031 Suction path 103 Press slip roller 1 3a Paper feed belt
4 Paper pull-in belt 5a Reverse belt
6 Separate belt
7 Paper transport belt

Claims (2)

In a paper feeding device comprising paper feeding means for continuously feeding out the paper, and a reverse unit that rotates in a direction that prevents the paper from being fed and prevents double feeding of the paper,
A laminating unit for laminating thin paper sheets;
A rotation adsorption unit that sequentially adsorbs the stacked sheets from the uppermost side, and rotates and feeds the sheets toward the reverse unit;
And a control unit that rotates the reverse unit in a direction opposite to the blocking direction. The rotary adsorption part is
A rotating body against which the stacked uppermost sheets are pressed;
A plurality of suction holes provided along the peripheral surface of the rotating body;
A holder for rotatably holding the rotating body;
And a suction path provided in the holder and sequentially communicating with the suction holes by the rotation of the rotating body and sucking the paper to the peripheral surface through the suction holes. The sheet feeding device according to 1.

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