JPH08208056A - Take-out device for stacked read documents - Google Patents

Abstract

PURPOSE: To take out various read documents one by one from the stack position thereof. CONSTITUTION: A separation and transfer section 22 is kept in slidable contact with both ends of an uppermost read document 16 on a placement seat 26 at positions across the transfer direction thereof, and takes out the document 16 from the stack position thereof over the prescribed distance. For this purpose, the section 22 is provided with a delivery roller 32 capable of free contact with and parting from the document 16, as well as free rotation, and a stopper means 33 for holding the roller 32 at the prescribed height for reducing the dead load thereof acting on the document 16 at the time of contact therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for taking out stacked read originals for taking out the read originals one by one and conveying them to a photographing section.

[0002]

2. Description of the Related Art For example, when a master printing plate is produced by a plate making machine, read originals stacked on a document placing section are taken out one by one through a document conveying device to constitute a photographing section. The image information carried on the read document is read and then discharged to the document discharge unit.

This type of document conveying apparatus is generally provided with a take-out roller which is rotationally driven, and the take-out roller is brought into sliding contact with the uppermost read document stacked on the mounting table to rotate, The feeding operation of the read document is being performed.

[0004]

By the way, in a read original for making a printing original plate, characters,
Documents with cutouts such as pictures and photos attached (hereinafter referred to as pasted documents) are often used. Therefore, in order to avoid the conveyance failure due to the sticking portion and the winding of the sticking portion, it is necessary to bring the take-out roller into sliding contact with the leading end portion of the sticking original, which is away from the sticking portion.

However, when the take-out roller is brought into sliding contact with the leading end portion of the uppermost pasted original in a state in which a plurality of pasted originals are stacked on the mounting table, the weights of the take-out rollers are all at the highest level. The tip of the pasted document will be caught. As a result, the tip portion of the pasted document is likely to bend downward, and two or more read originals are taken out integrally, so that the stacked pasted documents cannot be taken out one by one with certainty. A problem has been pointed out.

The present invention is intended to solve this type of problem, and provides a stacking-reading document take-out device which can take out various read-out documents one by one reliably and smoothly from the stacking position. With the goal.

[0007]

In order to achieve the above-mentioned object, the present invention provides a stacked read manuscript take-out device for taking out the read manuscripts stacked one by one and conveying them to a photographing section. A take-out roller that is movable in and out of contact with the stacked uppermost read original, and a weight of the take-out roller that acts on the read original when the take-out roller contacts the uppermost read original. Stopper means for holding the take-out roller at a predetermined height in order to reduce it,
It is characterized by including.

[0008]

In the device for picking up a stack of read originals according to the present invention, the stopper means holds the take-out roller at a predetermined height when the take-out roller comes into contact with the uppermost read original.
Therefore, the self-weight of the take-out roller acting on the read original is reduced, the downward bending of the read original is prevented, and the taking out of a large number of sheets is effectively prevented, so that the read originals can be smoothly and reliably one by one. It becomes possible to take it out.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The stack reading original take-out device according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, reference numeral 10
Indicates a plate making machine. In the plate making machine 10, an image reading device and an image recording device are practically integrally formed, and a document feeder 14 is detachably mounted on a base 12 constituting the plate making machine 10. .

The document feeding device 14 is provided with a plurality of read documents 1
The document placing section 18 on which the sheets 6 are stacked, and the separation / conveying section 22 which is a take-out device according to the present embodiment for taking out the stacked uppermost read originals 16 one by one and conveying them to the photographing section 20.
And a document discharge unit 24 for accommodating and stacking the read document 16 after being photographed by the photographing unit 20. The read document 16 is shown in FIG.
As shown in FIG. 5, a paste document having a cut-out portion for characters, pictures, etc., or a paste portion 16b for photographs, etc. is included at a predetermined position on a mount 16a such as paper.

The original placing section 18 is provided with a plurality of read originals 16.
1 is provided with a vertically movable mounting table 26, and on the mounting table 26, as shown in FIG. 1, slides in the arrow Y direction corresponding to the size of the read document 16 (for example, A5 to B3 size). A movable movable guide member 28 and a detachable rear end guide member 3 for guiding the rear end of the read document 16.
0 and 0 are provided.

As shown in FIG. 2 to FIG.
Reference numeral 2 denotes both end portions (pasted portion 16b) intersecting the conveyance direction (arrow X direction) of the uppermost read document 16 on the mounting table 26.
A take-out roller 32 which can be brought into contact with and separated from the stacked uppermost read original 16 and is rotatable in order to take out the read original 16 by a predetermined distance from the stacking position by slidingly contacting the read-out original 16 by sliding contact with a portion where When the take-out roller 32 comes into contact with the uppermost read document 16, a stopper means 33 for holding the take-out roller 32 at a predetermined height so as to reduce the weight of the take-out roller 32 acting on the read document 16. Equipped with.

The separating / conveying unit 22 is further in contact with the leading end of the reading original 16 taken out by the taking-out roller 32 in the conveying direction, and is opposed to the sending-out roller 34 for sending out the reading original 16 in the arrow X direction and the sending-out roller 34. And a return roller 36 for returning the other read original 16 sent out integrally with the sent uppermost read original 16 to the stacking position, and the sent read original 16 is conveyed to the photographing unit 20 side. And a nip roller 40 slidably in contact with the transport roller 38, and a displacement means 42 for moving the take-out roller 32 forward and backward with respect to the read document 16. A sensor 41 is provided close to the return roller 36 to detect whether or not the uppermost read document 16 on the mounting table 26 has reached a predetermined height position (see FIG. 3).

The take-out roller 32 has a large frictional force E.
Made of PDM or urethane sponge, read original 16
A tooth-shaped uneven portion 32a is formed on the peripheral surface portion that is in sliding contact with (see FIGS. 3 and 4). The take-out roller 32, the sending-out roller 34, and the nip roller 40 are mounted on a pair of units 44.

As shown in FIG. 4, each unit 44 has a bracket 5 supported by first and second rotary shafts 50 and 52 which are arranged in parallel with each other in the direction of the arrow Y so as to be positionally adjustable.
4 and a first swinging member 56 which is swingably mounted on the bracket 54 about the second rotating shaft 52 as a fulcrum, and a sending roller 34 is rotatably mounted on the swinging distal end side via a shaft 55. A second swing member 58 is swingably mounted on the shaft 55 as a fulcrum, and the take-out roller 32 is rotatably mounted on the swing tip side of the shaft 55 via a shaft 57. The delivery roller 34 is rotatable with respect to the shaft 55 via a bearing (not shown), and the delivery roller 32 is integrally fixed to the shaft 57.

The displacement means 42 comprises a first motor 64 connected to the first rotary shaft 50, and a first gear 66 is fixed to the first rotary shaft 50 rotated by the first motor 64. . The first gear 66 meshes with a second gear 68 rotatably arranged on the second rotary shaft 52, and is fixed to a first pulley 70 integrally provided on the second gear 68 and a shaft 55. The belt 74 engages with the second pulley 72.

A pin 76 is provided at an eccentric position of the second pulley 72.
Is fixed, and the pin 76 fits into the arcuate hole portion 78 formed in the second swing member 58. The second rocking member 58 includes a first locking plate portion 56 a provided on the first rocking member 56.
And a second locking plate portion 58a for pressing the second swinging member 58 upward by contacting with.

The take-out roller 32 is attached to the second rotary shaft 52.
And a second for rotating the delivery roller 34
The motor 80 is connected via a drive train (not shown) such as a gear train and a belt / pulley. This second rotating shaft 52
A third pulley 82 for fixing the rotational force of the second motor 80 is fixed thereto, and a belt 86 is engaged with the fourth pulley 84 provided integrally with the feed roller 34 and the third pulley 82. . Shaft 5 to which take-out roller 32 is fixed
A fifth pulley 88 is provided on the seventh pulley 8.
The belt 90 engages with the No. 8 and the fourth pulley 84.

Key grooves 50a and 52a are formed in the first and second rotating shafts 50 and 52 so as to extend in the axial direction, and the first gear 66 and the third pulley 82 are formed in the key grooves 50a and 52a. Each unit 44 can be fixed to a predetermined position of the first and second rotary shafts 50 and 52 by keying the key to 52a.

As shown in FIGS. 3 and 4, the stopper means 33 includes a mounting plate 92 fixed to the bracket 54,
A support plate 98 is attached to the mounting plate 92 via bolts 94 and nuts 96 in a positionally adjustable manner, and a stopper fixed to the side portion of the second swing member 58 and engaged and supported on the support plate 98. And a pin 100.

As shown in FIG. 3, guide means 102 is arranged between the mounting table 26 and the return roller 36. The guide means 102 takes out the read document 16 taken out by the rotation action of the take-out roller 32 in order to impart a separating operation to the read document 16 (direction of arrow X).
The guide portion 104 is inclined upward toward.

As shown in FIG. 2, the image capturing section 20 conveys the vertically movable image capturing table 110 and the read document 16 sent out from the separating / conveying section 22 in the arrow X direction to a predetermined image capturing position on the image capturing table 110. A plurality of endless belts 112 running around in order to carry out the above, and first and second suction boxes 1 which are connected to a vacuum generating means (not shown) and hold the read original 16 by suction.
14 and 116, and a pressure bonding glass 118 for pressing the read document 16 by raising the photographing table 110 to ensure the flatness of the read document 16.

The document discharge section 24 is provided with the endless belt 11
An inversion tray 122, which is arranged near the two ends and is swingable via a fulcrum 120, and an inclined tray 124 which is inclined with respect to the vertical direction.

The plate making machine 10 has illuminations 126a to 126d for illuminating the read document 16 at the photographing position of the photographing section 20.
And a reflection mirror 128 which is arranged above the pressure-bonding glass 118 at a predetermined angle, and a camera 130 which directly records the image of the read document 16 reflected by the reflection mirror 128 onto a predetermined recording medium. .

Next, the operation of the document feeding device 14 thus constructed will be described in relation to the separating and feeding section 22 according to this embodiment.

First, after the document feeder 14 is mounted on the base 12 of the plate making machine 10, a plurality of read documents 16 are stacked and accommodated on the mounting table 26 with their photographing surfaces facing upward. It Then, when the mounting table 26 is raised and it is detected via the sensor 41 that the uppermost read original 16 reaches the predetermined take-out height position, the take-out roller 32 is arranged above the read original 16. State (position P _{1 in} FIG. 3)
And FIG. 5), the second motor 80 is rotationally driven.

Therefore, as shown in FIG. 4, the second rotating shaft 52 rotates in the direction of the arrow, and the third pulley 82 and the belt 86.
The feed roller 34 is rotated via the fourth pulley 84, and the take-out roller 32 is rotated in the arrow direction integrally with the shaft 57 via the belt 90 and the fifth pulley 88.

Then, the first rotating shaft 50 is rotated in the direction of the arrow in FIG. 4 under the action of the first motor 64 constituting the displacement means 42, whereby the first gear 66 and the second gear 6 are rotated.
8, the second pulley 72 rotates via the first pulley 70 and the belt 74. Therefore, the pin 76 of the second pulley 72
Swings in the hole 78 of the second swinging member 58, and the second swinging member 58 is lowered by its own weight. As a result, the take-out roller 32 swings downward while rotating, and is placed on the mounting table 26.
Slidably touches the uppermost read document 16 and the read document 16 is taken out by a predetermined distance in the arrow X direction (position P in FIG. 3).
₂ and FIG. 6).

In this case, the take-out roller 32 is mounted on the mounting table 2
When the uppermost document 6 to be read is slidably contacted, the take-out roller 32 constitutes a stopper pin 100 which constitutes a stopper means 33 and a support plate 9 to which the stopper pin 100 is engaged.
And 8 at a predetermined height position. That is, as shown in FIG. 3, when the lower end of the peripheral surface of the take-out roller 32 comes into contact with the uppermost document 16 to be read, the lower end position of the peripheral surface of the take-out roller 32 is located below the original sheet passing line L by a distance H. It is maintained at a position separated by (≧ 0).

Therefore, in this embodiment, the take-out roller 3
Since 2 is held by the stopper means 33, the weight of the take-out roller 32 acting on the uppermost read document 16 is considerably reduced. As a result, the reading original 16 is prevented from curving downward and the take-out roller 32
The feeding force of (1) acts only on the read document 16 on the uppermost side, and the simultaneous removal of a large number of read document 16 is effectively prevented.
The position of the support plate 98 can be adjusted with respect to the mounting plate 92 via the bolt 94 and the nut 96, so that the position for holding the take-out roller 32 can be adjusted accurately.

Further, in this embodiment, the take-out roller 3
As shown in FIG. 6, the read original 16 taken out by the step 2 is engaged with the guide portion 104 which constitutes the guide means 102. For this reason, even if two or more read originals 16 are taken out at the same time, the read originals 16 are still guided by the guide unit 10.
4 is lifted along the inclination of No. 4 to be separated and separated, and only one read original 16 is sent out by the feed roller 34.
Be transported to the side.

As a result, in this embodiment, it is possible to smoothly and reliably take out the plurality of read originals 16 stacked on the mounting table 26 one by one. If the distance H between the lower end of the peripheral surface of the take-out roller 32 and the original sheet-passing line L is too large, the substantial friction coefficient between the read originals 16 becomes large, and the possibility of taking out multiple sheets simultaneously increases. Therefore, it is necessary to set the distance H in consideration of the weight of the take-out roller 32, the coefficient of friction of the read document 16, and the like.

By the way, after the uppermost read document 16 on the mounting table 26 is taken out through the take-out roller 32 by a predetermined distance in the direction of arrow X, the read document 16 is further rotated under the action of the feed roller 34. It is transported in the X direction. Then, the first motor 64 configuring the displacement means 42 is rotationally driven in the opposite direction to the above, and the first rotation shaft 50 rotates in the opposite direction to the arrow. Therefore, the second swing member 58 swings upward, and the take-out roller 32 moves from the position P ₂ to the position P ₁ and separates from the read document 16 (position P in FIG. 3).
₁ and FIG. 7).

When the document 16 to be read is nipped by the conveying roller 38 and the nip roller 40 and conveyed to a predetermined position in the arrow X direction, the first motor 64 is further driven to rotate and the second swinging member 58 moves to the second position. The locking plate portion 58a is the first swing member 5
The first locking plate portion 56a of No. 6 is abutted. Therefore, the second swing member 58 swings upward with the second rotation shaft 52 as a fulcrum, and the feed roller 34 separates from the read document 16 (see position P _{3 in} FIG. ₃ and FIG. 8).

When the delivery roller 34 swings upward, the load acting on the return roller 36 is released. As a result, the return roller 36 is rotated in the direction of arrow A, and the double feeding of the read document 16 is further reliably prevented.

In the photographing section 20, the first suction box 114 is driven to move the read original 16 to the endless belt 1.
This endless belt 11 in a state of being adsorbed and held by 12
2 goes around. Next, while the nip roller 40 is separated from the conveyance roller 38, the second suction box 116 is driven, and the read original 16 is adsorbed and held by the endless belt 112 and is placed at a predetermined image capturing position on the image capturing base 110.

Then, with the photographing table 110 being raised and the read original 16 being pressed and held by the pressure bonding glass 118, illumination light is emitted from the illuminations 126a to 126d constituting the plate making machine 10 and the camera 130 is attached. The pasted portion 16b of the image, characters, photograph, etc., which is biased and stuck on the read original 16 is directly recorded on a plate material (not shown),
A printing plate is created.

The document 16 to be read after the photographing is completed is taken by the photographing table 11
After being lowered by 0, it is conveyed in the arrow X direction via the endless belt 112, once dropped and supplied to the reversing tray 122, and then the reversing tray 122 is reversed in the arrow direction around the fulcrum 120. The read document 16 is stacked and accommodated on the inclined tray 124 with its photographing surface facing downward.

[0040]

According to the apparatus for taking out a stack of read originals according to the present invention, the following effects can be obtained.

Since the take-out roller is held by the stopper means when the take-out roller comes into contact with the uppermost read original, the weight of the take-out roller acting on the uppermost read original is reduced. As a result, downward bending of the read document is prevented, and a large number of sheets of the read document are effectively prevented, and the read document can be smoothly and reliably taken out one by one.

Further, since the guide means for giving the separation to the taken out originals is provided, the taking out of the originals one by one can be performed more reliably.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a plate-making machine in which a document transporting device incorporating a separation transporting unit, which is a stacking-scanned document fetching device according to the present invention, is mounted.

FIG. 2 is a schematic configuration diagram of the document feeder.

FIG. 3 is a schematic configuration explanatory view of the separating and conveying unit.

FIG. 4 is a perspective view of an essential part of the separation and conveyance section.

FIG. 5 is an explanatory diagram showing a state in which a take-out roller that constitutes the separating and conveying unit is arranged above a read document.

FIG. 6 is an explanatory diagram of a state in which the take-out roller is in sliding contact with a read document.

FIG. 7 is an explanatory diagram of a state in which the take-out roller is separated from the read document.

FIG. 8 is an explanatory diagram showing a state in which a delivery roller forming the separation / conveyance unit is separated from the read document.

[Explanation of symbols]

10 ... Plate-making machine 12 ... ... Sending roller 36 ... Returning roller 42 ... Displacement means 44 ... Units 50, 52 ... Rotating shaft 54 ... Bracket 56, 58 ... Swing member 92 ... Mounting plate 94 ... Bolt 96 ... Nut 98 ... Support plate 100 ... Stopper pin 102 ... Guide means 104 ... Guide section

Claims (2)

[Claims] 1. A stack read manuscript take-out device for picking up stacked manuscripts one by one and conveying them to a photographing section, which is rotatable and detachable with respect to the stacked uppermost manuscript. A possible take-out roller, and stopper means for holding the take-out roller at a predetermined height so as to reduce the weight of the take-out roller acting on the read original when the take-out roller comes into contact with the uppermost read original. An apparatus for picking up a stack of read originals, comprising: 2. The take-out device according to claim 1, wherein a guide is inclined upward in a take-out direction of the read document in order to impart a separating operation to the read document taken out by the rotating action of the take-out roller. An apparatus for picking up a stack of read originals, comprising: