JPH0958889A - Sheet delivery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To deliver sheets positively sheet by sheet so as to prevent a sheet jam by applying force enough to separate by shifting the front edges of a plurality of sheets along the peripheral surface of a take-in roller, to a plurality of sheets. SOLUTION: Energizing force applied to a take-in roller 7 and a sheet separating roller 10 allows a plurality of sheets 3 to pass through a clearance between a delivery roller 6 and the take-in roller 7 by the oscillation of an arm 9 around a supporting shaft 8, but this energizing force is set to such a grade that the force enough to separate by shifting the front edges of a plurality of sheets 3 along the peripheral surface of the take-in roller 7 is applied to the sheets 3 and that a plurality of sheets 3 can be fed into a clearance between the delivery roller 6 and a pair of sheet separating rollers 10. Accordingly, when a plurality of sheets 3 pass through the clearance between the delivery roller 6 and the take-in roller 7, the sheets 3 are fed into the space between the delivery roller 6 and the sheet separating rollers 10, with the front edges of the sheets in the shifted state, so that the sheets 3 are separated and fed into a clearance to a separating roller 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding device for feeding sheets one by one, and more particularly, to a sheet feeding device for feeding sheets one by one, which is used in a sheet counter for counting the number of sheets.

[0002]

2. Description of the Related Art In a sheet counter or the like for counting the number of sheets, a sheet feeding device for feeding the accumulated sheets one by one is provided. For example, Japanese Utility Model Publication No. 6-44919 discloses a pair of first feeding rollers axially fixed on the feeding roller shaft and a feeding roller shaft between the pair of first feeding rollers. And a second feeding roller having a diameter substantially the same as that of the first feeding roller and a peripheral surface of the first feeding roller, which are provided so as to face each other, and one sheet is provided between the second feeding roller and the first feeding roller. Sheet formed to face the peripheral surface of the second feeding roller and a gate member that forms a gate portion that allows the passage of the sheet, and is urged toward the second feeding roller and accumulated in the accumulating portion. Discloses a sheet feeding device including a separating roller that contacts the leading edge of the sheet and regulates the number of sheets fed to the gate portion.

[0003]

The separation roller urged toward the second feeding roller in the sheet feeding device prevents abrasion between the second feeding roller and the rotating second feeding roller. However, when a large number of sheets are accumulated in the accumulating portion, a load is applied to the separation roller from the leading edge of the accumulated sheets, so Due to the frictional force generated between the rollers, the separation roller is prevented from rotating, and the number of sheets fed to the gate is restricted. However, when the number of sheets stacked in the stacking unit is small,
A large number of sheets were accumulated, but when the number of sheets accumulated in the accumulating section becomes small as a result of the sheets being unrolled, the load applied from the leading edge of the sheet also decreases and the leading edge of the sheet decreases. Due to the frictional force generated between and, the rotation of the separating roller can no longer be blocked,
Along with the movement of the sheet fed between the second feeding roller and the separating roller, the separating roller rotates, and it becomes impossible to regulate the number of sheets sent to the gate section. It becomes difficult to separate them one by one.

Further, when the sheet feeding device is used in a sheet counter for counting sheets at a high speed of 1200 to 1500 sheets per minute, it is possible to feed the sheets at a speed commensurate with the sheet counting machine. Generally, the feeding roller of the sheet feeding device is configured to rotate at high speed. Therefore, even if a large number of sheets are accumulated in the accumulating portion and the rotation of the separating roller is prevented by the load applied from the leading edge of the accumulated sheets, the sheet is unrolled at a high speed by the unrolling roller, and thus multiple sheets are stacked. There is a case where the sheet is fed between the feeding roller and the separating roller without being separated.In such a case, when the separating roller is urged by the feeding roller with a large force, the separating roller and There is a risk that a plurality of sheets fed between the two feeding rollers may cause jamming. In order to prevent such sheet jamming, if the force for urging the separating roller toward the feeding roller is reduced, a plurality of sheets may be sent to the gate unit without being separated, and the sheet may jam at the gate unit. There is. Therefore, it is an object of the present invention to provide a sheet feeding device capable of reliably feeding sheets one by one and preventing jamming of the sheets.

[0005]

The object of the present invention is to:
A sheet stacking unit that stacks sheets, a kicking roller that contacts the lowermost sheet stacked in the sheet stacking unit and sends the sheet toward a feeding roller, and a lowermost sheet that is sent by the kicking roller A sheet feeding device including a feeding roller that feeds a sheet from the sheet stacking portion and is in contact with a front edge of the sheet, and a separating roller that forms a gate portion that separates the sheet between the feeding roller and the feeding roller. Has a take-up roller that faces the peripheral surface of the take-up roller, and a separating member that is provided on the downstream side of the take-up roller and upstream of the separating roller and that faces the pay-out roller. An arm member that is urged by the urging means so that the take-in roller is in contact with the peripheral surface of the feeding roller; Therefore, the urging force applied to the arm member allows the plurality of sheets to pass through the gap between the feeding roller and the take-in roller by swinging the arm member around the support shaft. Then, at least the front edges of the plurality of sheets are displaced along the peripheral surface of the take-in roller, and a force sufficient to loosen the sheets is applied to the plurality of sheets, and the plurality of sheets are the delivery rollers. When fed into the gap between the separating member, the separating member separates the front edges of the plurality of sheets along the peripheral surface of the separating member to separate the separating roller from the feeding roller and the separating roller. This is achieved by a sheet feeding device characterized in that the size is set so that it can be fed into the gap.

According to the present invention, the urging force applied to the arm member by the urging means causes the arm member to swing around the support shaft, so that a plurality of sheets pass through the gap between the feeding roller and the take-in roller. On the other hand, at least the front edges of the plurality of sheets are displaced along the peripheral surface of the take-in roller to apply a force enough to loosen them to the plurality of sheets, and When fed into the gap between the feeding roller and the separating member, the separating member shifts the leading edges of the plurality of sheets along the peripheral surface of the separating member and feeds them into the gap between the feeding roller and the separating roller. Since the size is set so that the stacking area is small, the number of sheets stacked in the sheet stacking unit is small, and the rotation of the take-in roller is blocked by the weight of the stacked sheets. Or even when a plurality of sheets pass through the gap between the take-up roller and the feed roller and are sent to the gap between the feed roller and the separating member because the feed roller is rotated at a high speed, Of the plurality of sheets, at least the front edges of the plurality of sheets are displaced and separated along the peripheral surface of the pickup roller when the sheets of the above-mentioned sheet pass through the gap between the pickup roller and the feed roller. The sheets are sent to the gap between the members, and the plurality of sheets are separated by the separating member, and further, the front edge thereof is
A plurality of sheets are reliably separated one by one by the separation roller and fed out because they are shifted and separated along the peripheral surface of the separation member and fed to the gap between the supply roller and the separation roller. In addition, multiple sheets are
Even if the sheet is fed into the gap between the take-in roller and the feeding roller, it is possible to prevent the sheet from jamming.

[0007] In a preferred aspect of the present invention, when the sheet is passed through the gap between the feeding roller and the take-in roller by the take-in roller and the separating member, the arm is swung. The gap between the separating member and the feeding roller is set to be narrower than the gap between the take-in roller and the feeding roller. According to a preferred embodiment of the present invention, a plurality of sheets are fed into the gap between the take-in roller and the pay-out roller, and even when the arm moves in the retreating direction with respect to the pay-out roller, the separating member and the pay-out roller are provided. Since the gap of is set to be narrower than the gap between the take-in roller and the feeding roller, the front edges of the plurality of sheets are displaced and separated along the peripheral surface of the separation member by the separation member. The sheet can be fed into the gap between the feeding roller and the separating roller, and the separating roller can surely separate the plurality of sheets one by one and feed them. In a further preferred aspect of the present invention, the separating member forms a first gate portion that separates a plurality of sheets between the separating roller and the feeding roller, and the separating roller forms a first gate portion between the separating roller and the feeding roller. , Forming a second gate portion for separating the plurality of sheets.

According to a further preferred embodiment of the present invention, the plurality of sheets which have passed through the gap between the take-in roller and the take-out roller with the leading edge thereof being shifted and separated are separated from each other by the take-off member and the take-out roller. The first gate portion formed by and the second gate portion formed by the separating roller and the feeding roller are subjected to the separating action, so that a plurality of sheets are surely separated one by one and fed out. It will be possible. In a further preferred aspect of the present invention, the separating member is a roller.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic side view of a sheet feeding device according to an embodiment of the present invention, and FIG. 2 is a schematic sectional view taken along line I-I of FIG. As shown in FIGS. 1 and 2, the sheet feeding device includes a front plate 1 and a bottom plate 2, and a sheet 3
And a sheet stacking unit 4 for stacking sheets, and a sheet stacking unit 4 that is provided below the bottom plate 2 and projects into the sheet stacking unit 4 from an opening (not shown) formed in the bottom plate 2 and stacks the sheet stacking unit 4 in A kicking roller 5 that contacts the lower sheet 3 and sends the sheet 3 in the feeding direction, and a front plate 1 of the sheet stacking unit 4.
The sheet feeding roller 6 is provided below the sheet stacking section 4 and contacts the front edge of the lowermost sheet 3 stacked in the sheet stacking section 4 and sends the sheet 3 out of the sheet stacking section 4 as the sheet 3 rotates. As shown in FIG. 2, two grooves are formed along the circumference on the peripheral surface of the feeding roller 6, and the feeding roller 6 has two small diameter portions 6a, an outer large diameter portion 6b, and a central large diameter portion. 6c.

The sheet feeding device is further provided above the feeding roller 6 and has a take-in roller 7 which comes into contact with the peripheral surface of the central large diameter portion 6c of the pair of feeding rollers 6.
An arm 9 that rotatably supports the take-in roller 7 and can swing around a support shaft 8, and an arm 9 that is rotatably supported by the arm 9.
A pair of separation rollers 10 provided on the downstream side of the separation roller 6 so as to face the delivery roller 6, and on the downstream side of the separation rollers,
A pair of separating rollers 11 provided so as to face the feeding roller 6, one end of which is attached to the main body (not shown) of the sheet feeding device and the other end of which is attached to the arm 9, and the take-in roller 7 and the feeding roller 6 are attached. A spring 12 that biases the peripheral surface of the large diameter portion 6b is provided. Each separation roller 10
Is positioned such that its peripheral surface faces the small diameter portion 6a of the feeding roller 6, and its outer circumference is in contact with the outer diameter of the outer large diameter portion 6b of the feeding roller 6 as shown in FIG. A space having a thickness of at least one sheet is formed between each of the separating rollers 10 and the small diameter portion 6a of the feeding roller 6, and the center of the separating roller 10 and the feeding roller 6 is large. The first gate portion 15 is formed by the diameter portion 6c.

Each separating roller 11 has a small diameter portion 11
a, the first large diameter portion 11b and the second large diameter portion 11c are provided, and the peripheral surfaces of the first large diameter portion 11b and the second large diameter portion 11c are
It is located at a position shifted to both sides in the axial direction from a position facing the outer large diameter portion 6b of the feeding roller 6. When viewed from FIG. 1, its outer periphery is arranged in such a positional relationship that it is in contact with the outer periphery of the outer large-diameter portion 6b of the feeding roller 6, and the small-diameter portion 11a and the first large-diameter portion 11b of this separation roller 11 are arranged. Further, a gap having a thickness of at least one sheet is formed between the second large diameter portion 11c and the small diameter portion 6a and the outer large diameter portion 6b of the feeding roller 6, and each separation roller 11 and the feeding roller 6 are formed. The second gate portion 16 is formed by the outer large-diameter portion 6b. The kicking roller 5, the feeding roller 6, and the pair of separating rollers 11 are rotated clockwise in FIG. 1 by a driving unit (not shown), and the pair of separating rollers 11 are arranged in a one-way clutch (see FIG. (Not shown), it is configured to be rotatable only clockwise. Further, the bottom plate 2 is moved in the feeding direction so that the front edge of the sheets 3 stacked in the sheet stacking unit 4 contacts the peripheral surface of the take-in roller 7.
Inclined downward.

A friction member 20 is provided on a part of the peripheral surface of the kick roller 5, and friction is also applied to a part of the peripheral surface of the outer large diameter portion 6b and the central large diameter portion 6c of the feeding roller 6. A member 21 is provided. The peripheral surfaces of the separating roller 11 and the separating roller 10 are made of a friction material. On the other hand, the peripheral surface of the take-in roller 7 is a smooth surface. Capture roller 7 and separation roller 10
Are rotatably attached to the arm 9 by a support shaft 30 and a support shaft 31, respectively, and the positional relationship between the support shafts 30 and 31 and the take-in roller 7 and the separating roller 10 are provided.
When the arm 9 swings as the sheet 3 passes through the gap between the feeding roller 6 and the pickup roller 7, the gap between the separation roller 10 and the feeding roller 6 becomes It is set so as to be narrower than the gap with 6. The biasing force applied to the take-in roller 7 and the separating roller 10 by the spring 12 causes the plurality of sheets 3 to pass through the gap between the feeding roller 6 and the take-in roller 7 as the arm 9 swings around the support shaft 8. To allow
At least the front edges of the plurality of sheets 3 are displaced along the peripheral surface of the take-in roller 7 so that a force sufficient to loosen them is applied to the plurality of sheets 3, and the plurality of sheets 3 are fed by the feeding roller 6 When fed into the gap between the separating roller 10 and the pair of separating rollers 10, the front edges of the plurality of sheets 3 are displaced by the pair of separating rollers 10 along the curved peripheral surface of the separating roller 10, and the feeding roller 6 is provided. The size is set so that it can be fed into the gap between the pair of separating rollers 11.

The sheet feeding device having the above-described structure is configured to load the sheet 3 into the sheet stacking unit 4 in the following manner.
Starting with, one by one. Sheet 3 is sheet stacking unit 4
When the sheets 3 are stacked on the bottom plate 2, the sheets 3 are slid along the upper surface of the bottom plate 2 because the bottom plate 2 is inclined downward toward the peripheral surface of the take-in roller 7. The front edge contacts the peripheral surface of the take-in roller 7. As a result, the take-in roller 7 is prevented from rotating due to the weight of the sheets 3 stacked in the sheet stacking unit 4. When the kicking roller 5 and the feeding roller 6 are rotated in this state, the lowermost sheet 3 with which the kicking roller 5 is in contact is moved by the kicking roller 5 by the feeding roller 6
And is fed into the gap between the take-in roller 7 and the take-in roller 7. On this occasion,
Due to the frictional force between the sheets 3, the plurality of sheets 3 are sent into the gap between the feeding roller 6 and the take-in roller 7 together with the lowermost sheet 3. FIG.
FIG. 6 is a schematic side view of the vicinity of a feeding roller when feeding a sheet from a sheet stacking unit. As shown in FIG. 3, since the rotation of the take-in roller 7 is blocked, when the plurality of sheets 3 are fed into the gap between the take-out roller 6 and the take-in roller 7, the take-out roller 6 and the take-in roller 7 are provided. A force for separating the sheet 3 is applied from 7.
However, when the sheet feeding device is used in the sheet counter, the feeding roller 6 is rotated at a high speed in the clockwise direction in FIG. 3, so that the feeding roller 6 is rotated by the frictional force between the sheets 3. The take-up roller 7 is rotated as the sheet 3 coming into contact with the take-out roller 6 is taken out, and a plurality of sheets 3 pass through the gap between the take-out roller 6 and the take-in roller 7, or If the number of the sheets 3 stacked in the sheet stacking unit 4 is small, or if the number of the sheets 3 stacked in the sheet stacking unit 4 becomes small due to the feeding of the sheets 3, the sheets 3 are stacked in the sheet stacking unit 4. The force applied from the sheet 3 to the take-in roller 7 becomes small, and the rotation of the take-in roller 7 cannot be prevented. Easily pass through the gap between the feed roller 6 and the uptake roller 7. However, in the present embodiment, the urging force applied to the take-in roller 7 and the separating roller 10 by the spring 12 is as follows when a plurality of sheets 3 are sent into the gap between the take-out roller 6 and the take-in roller 7. The plurality of sheets 3 are allowed to pass through the gap between the feeding roller 6 and the take-in roller 7, but at least the front edge of the plurality of sheets 3 is shifted along the peripheral surface of the take-in roller 7. Since the force for loosening is set to such a magnitude that it is applied to the plurality of sheets 3, the arm 9 swings around the support shaft 8 and the plurality of sheets 3 are taken in by the delivery roller 6. When the plurality of sheets 3 have passed through the gap with the roller 7, the front edges of the plurality of sheets 3 are displaced and separated along the peripheral surface of the take-in roller 7 and paired with the feeding roller 6. It is sent to the gap between the separation roller 10.

When one sheet 3 is fed between the feeding roller 6 and the pair of separating rollers 10, the frictional force between the fed sheet 3 and the friction member 21 of the feeding roller 6 causes The sheet 3 is the feeding roller 6
Is fed between the central large-diameter portion 6c of the sheet and the pair of separating rollers 10, and at this time, the pair of separating rollers 10 abutting from the upper surface of the sheet 3 are rotated together with the sheet 3 in the feeding direction. . When a plurality of sheets 3 are fed in, the plurality of fed sheets 3
The sheets 3 other than the sheet 3 that come into contact with the feeding roller 6 are moved by the frictional force between the sheets 3. Since the frictional force between the respective sheets 3 is extremely small, the sheet 3 passes between the central large-diameter portion 6c of the feeding roller 6 and the pair of separating rollers 10 together with the sheet 3 contacting the feeding roller 6. However, only the sheet 3 which is displaced by the peripheral surface of the separating roller 10 and is brought into contact with the feeding roller 6 is
Seen from the conveying direction of the sheet 3, the sheet 3 is sandwiched in a wave-like deformed state, receives a separating force from the feeding roller 6 and the separating roller 10, and passes through a gap between the feeding roller 6 and the pair of separating rollers 10. It is sent to the gap between the delivery roller 6 and the pair of separation rollers 11. Here, the support shaft 30,
The positional relationship of 31 and the diameters of the take-in roller 7 and the separating roller 10 are such that the sheet 3 passes through the gap between the feeding roller 6 and the take-in roller 7 and
Since the gap between the separating roller 10 and the feeding roller 6 is set to be narrower than the gap between the take-in roller 7 and the feeding roller 6 when the sheet is swung, a plurality of sheets 3 are fed into the feeding roller. Even if the arm 9 swings through the gap between the pick-up roller 6 and the take-in roller 7 and the gap between the feeding roller 6 and the pair of separating rollers 10 becomes wide, the separating action of the separating roller 10 is not impaired. Is assured. Thus, even when a plurality of sheets 3 are fed by passing through the gap between the feeding roller 6 forming the first gate portion 15 and the pair of separating rollers 10, the sheets 3 are usually fed one by one. However, even when the sheets 3 are not separated one by one, the gap between the feeding roller 6 and the pair of separation rollers 11 with the leading edges of the plurality of sheets 3 further displaced and separated. Sent to.

The first large diameter portion 11b, 1 of each separating roller 11
The peripheral surface of 1c is located at a position shifted to both sides in the axial direction from the position facing the outer large diameter portion 6b of the feeding roller 6, and the outer periphery thereof is, as shown in FIG. 1, the outer large diameter portion of the feeding roller 6. It is arranged in a positional relationship so as to contact the outer circumference of 6b.
Further, between the small diameter portion 11a, the first large diameter portion 11b and the second large diameter portion 11c of the separation roller 11 and the small diameter portion 6a and the outer large diameter portion 6b of the feeding roller 6, at least three sheets and one sheet are provided. A gap having the above thickness is formed, and each separation roller 11 and the outer large diameter portion 6b of the feeding roller 6 form a second gate portion 16. Therefore, 1
The sheet 3 is a feeding roller 6 and a pair of separating rollers 1.
When the sheet 3 is fed between the sheet 3 and the separating roller 11, the frictional force between the fed sheet 3 and the friction member 21 of the feeding roller 6 is larger than the frictional force between the sheet 3 and the separating roller 11. It is large, so that the feeding roller 6 and the separating roller 1
The sheet 3 can pass between the sheet 1 and the sheet 1. Also,
When multiple sheets 3 are fed, each sheet 3
Friction force between the sheet 3 and the friction member 21 of the feeding roller 6 that are in contact with the feeding roller 6, and the other sheet 3 and the separation roller 11 that are not in contact with the feeding roller 6 Because the frictional force of
Only the sheet 3 that is in contact with the delivery roller 6 passes through the gap between the delivery roller 6 and the pair of separation rollers 11 while being sandwiched in a state of being deformed in a wave shape when viewed from the conveying direction of the sheet 3. Here, the pair of separation rollers 11 is rotated in the direction opposite to the direction of the delivery roller 6 in the gap between the delivery roller 6 and the pair of separation rollers 11, so that the leading edge is displaced and separated. Then, when the plurality of sheets 3 are sent to the gap between the feeding roller 6 and the pair of separating rollers 11, a large frictional force is applied to the plurality of sheets 3 from the separating roller 11 and To 1
It is separated into sheets and sent to the downstream side.

According to this embodiment, the take-in roller 7 and the pair of separating rollers 10 are rotatably attached to the arm 9 swingable around the support shaft 8, and the spring 12 attached to the arm 9 causes The biasing force applied to the take-in roller 7 and the separation roller 10 by the spring 12 is biased toward the feeding roller 6, and the arm 9 swings around the support shaft 8 to generate a plurality of sheets. Although the sheet 3 is allowed to pass through the gap between the feeding roller 6 and the take-in roller 7, at least the front edges of the plurality of sheets 3 are displaced along the peripheral surface of the take-in roller 7 and separated. When a force is applied to the plurality of sheets 3 and the plurality of sheets 3 are fed into the gap between the feeding roller 6 and the pair of separating rollers 10, The separating roller 10, the leading edge of a plurality of sheets 3, along the curved peripheral surface of the separation roller 10, staggered, feed roller 6 and a pair of separation rollers 1
Since the size is set so that the sheet can be fed into the gap between the sheet feeding device 1 and the sheet feeding device 1, the feeding roller 6 is rotating at a high speed as in the case where the sheet feeding device is used in a sheet counter, or Also, when the force applied from the sheets 3 accumulated in the sheet accumulating unit 4 becomes small and the take-up roller 7 rotates, and a plurality of sheets 3 pass through the gap between the feeding roller 6 and the take-up roller 7,
The plurality of sheets 3 are fed to the gap between the feeding roller 6 and the pair of separating rollers 10 in a state where the front edges thereof are displaced and separated, and the pair of separating rollers 10 further
Since the front edge of the sheet is displaced, separated, and fed to the gap between the feeding roller 6 and the pair of separating rollers 11, the pair of separating rollers 11 reliably separates the sheets 3 one by one and feeds them. It will be possible.

Further, according to this embodiment, the spring 1
2, the force for urging the take-in roller 7 toward the take-out roller 6 is set to an extent that allows the plurality of sheets 3 to pass through the gap between the take-out roller 6 and the take-up roller 7. Thus, it is possible to reliably prevent the plurality of sheets 3 from jamming in the gap between the feeding roller 6 and the take-in roller 7. The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and are included in the scope of the invention. Needless to say. For example, in the above-described embodiment, the separating roller 10 is made of a friction material, but only the peripheral surface may be made of the friction material, or the peripheral surface may be made of a smooth surface. Further, in the above-described embodiment, the separating roller 10 is rotatably attached to the arm 9, but it may be fixed to the arm 9, and further, a plurality of sheets may be provided between the separating roller 10 and the feeding roller 6. Even if a gate forming member that forms the first gate portion 15 that can be separated by shifting the front edge of 3 is attached to the arm, the arm 9 itself is formed to have a shape corresponding to the gate forming member. It may have been done. In this case, the shape of the gate forming member is such that it can form the first gate portion 15 that can be separated by shifting the front edges of the plurality of sheets 3 with respect to the feeding roller 6. It does not need to be in the shape of a roller, and may have a shape such that the gap with the payout roller 6 becomes gradually narrower toward the downstream side.

[0018]

According to the present invention, the sheet can be securely attached to 1
It is possible to provide a sheet feeding device capable of feeding sheets one by one and preventing jamming of sheets.

[Brief description of drawings]

FIG. 1 is a schematic side view of a sheet feeding device according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line II of FIG.

FIG. 3 is a schematic side view of the vicinity of a delivery roller when delivering a sheet from a sheet stacking unit.

[Explanation of symbols]

 1 front plate 2 bottom plate 3 sheet 4 sheet accumulating portion 4 5 kicking roller 6 feeding roller 6a small diameter portion of feeding roller 6b outer large diameter portion of feeding roller 6c central large diameter portion of feeding roller 7 take-up roller 8 support shaft 9 arm 10 Separation roller 11 Separation roller 11a Small diameter part of separation roller 11b First large diameter part of separation roller 11c Second large diameter part of separation roller 12 Spring 15 First gate part 16 Second gate part 20, 21 Friction member 30, 31 Support axis

Claims (4)

[Claims] 1. A sheet stacking unit for stacking sheets, a kicking roller that contacts the lowermost sheet stacked in the sheet stacking unit, and sends the sheet toward a payout roller, and is sent by a kicking roller. Also, a sheet feeding device provided with a feeding roller that comes into contact with the front edge of the lowermost sheet and feeds the sheet from the sheet stacking portion, and a separation roller that forms a gate portion that separates the sheet between the feeding roller. A take-up roller that faces the peripheral surface of the pay-out roller, and a separating member that is provided on the downstream side of the take-up roller and upstream of the separation roller and that faces the pay-out roller, and swings around the support shaft. An arm member that is movable and is urged by an urging means such that the take-in roller is in contact with the peripheral surface of the feeding roller. An urging force applied to the arm member by the urging means causes the arm member to swing around the support shaft, so that a plurality of sheets pass through a gap between the feeding roller and the take-in roller. While allowing at least, the front edge of the plurality of sheets is displaced along the peripheral surface of the take-in roller, and a force sufficient for loosening is applied to the plurality of sheets, and the plurality of sheets is When fed into the gap between the feeding roller and the separating member, the separating member separates the front edges of the plurality of sheets along the peripheral surface of the separating member to separate the feeding roller and the separating roller. A sheet feeding device, which is set to a size that allows it to be fed into a gap between the separation roller. 2. The separating roller and the feeding member further include a sheet passing through a gap between the feeding roller and the feeding roller, whereby the separating member and the feeding member move when the arm swings. The sheet feeding device according to claim 1, wherein a gap between the sheet feeding roller and the roller is set to be narrower than a gap between the take-up roller and the feeding roller. 3. The separating member forms a first gate portion for separating a plurality of sheets between the separating roller and the feeding roller, and the separating roller forms a first gate portion between the separating roller and the feeding roller.
The sheet feeding device according to claim 1, wherein a second gate portion that separates the plurality of sheets is formed. 4. The sheet feeding device according to claim 1, wherein the separating member is a roller.