CN115771788A - Paper feeding device and paper feeding method - Google Patents
Paper feeding device and paper feeding method Download PDFInfo
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- CN115771788A CN115771788A CN202211553379.XA CN202211553379A CN115771788A CN 115771788 A CN115771788 A CN 115771788A CN 202211553379 A CN202211553379 A CN 202211553379A CN 115771788 A CN115771788 A CN 115771788A
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- sheet feeding
- loaded
- feeding device
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004080 punching Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
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Abstract
The invention discloses a paper feeding device and a paper feeding method. The invention provides a paper feeding device which can separately feed paper one by one even if the paper is thin. The paper feeding device comprises: a paper feeding table that loads paper; a guide plate vertically provided on the sheet feeding table and abutting against a leading edge of the loaded sheet; a rear guide having an abutment surface to abut a rear edge of the loaded paper; a suction hole which sucks the paper downward; a suction pump for supplying negative pressure to the suction hole; a paper feed roller which moves the paper forward or backward in the paper feed direction; a support hook that supports a front lower end of the bundle of stacked sheets in a state of being separated from the sheet feed table; and the paper rear edge accommodating part is arranged between the lower end of the abutting surface and the paper feeding table. The suction pump sucks the bottommost sheet of the loaded sheets, retracts the trailing edge of the bottommost sheet, stores the bottommost sheet in the sheet trailing edge storage section, and then advances the bottommost sheet.
Description
Technical Field
The present invention relates to a sheet feeding device and a sheet feeding method for feeding sheets one by one, such as a printing device and a punching device, and more particularly to a sheet feeding device and a sheet feeding method for thin sheets.
Background
In the past, a paper feeding device for feeding paper in a printing machine or the like has been most widely used as the following paper feeding device: the loaded paper is placed on a paper feed table and brought into contact with the edge of the guide plate on the downstream side, and is fed by rollers one by one from the lower side (see, for example, patent document 1).
The paper feeding device 9 (see fig. 6) of patent document 1 is for feeding thick paper X such as corrugated cardboard, and sucks the bottom sheet X1 of the thick paper X loaded between the guide plate 902 and the rear guide 905 downward through a suction hole 12 provided in the paper feeding table 11, and conveys the sheet downstream through a gap 22 between the paper feeding table 11 and the guide plate 902 by the paper feeding roller 13.
[ patent document 1 ] Japanese patent application laid-open No. 2016-50071
However, in the sheet feeding device 9 of patent document 1, the height of the gap 22 is adjusted so that only one thick sheet X passes through; if the sheet is thinned, it is difficult to adjust the height of the gap 22 to pass only one sheet.
The present invention is directed to the above-mentioned problem, and an object of the present invention is to provide a sheet feeding device capable of feeding sheets one by one even if the sheets are thin.
Disclosure of Invention
To solve the above problems, the paper feeding device of the present invention feeds paper sheets loaded in a vertical direction in a thickness direction from below in sequence, and comprises: the paper feeding device comprises a paper feeding table, a guide plate, a rear guide plate, a suction hole, a suction pump, a paper feeding conveying belt, a servo motor, a support sheet, a paper rear edge storage part and a control part. The paper feeding table loads paper; the guide plate is vertically arranged on the paper feeding table and is abutted against the front edge of the loaded paper; the rear guide plate has an abutting surface to abut against the rear edge of the loaded paper; the paper is attracted downwards by the attraction holes; a suction pump for supplying negative pressure to the suction hole; the paper feeding conveying belt moves the paper to the front or the back of the paper feeding direction and consists of a paper feeding roller or a belt conveying belt; the servo motor rotationally drives the paper feeding conveying belt; the supporting sheet is supported in a state that the lower end of the front side of the paper stacked in a bundle is separated from the paper feeding table; the paper rear edge accommodating part is formed by a gap arranged between the lower end of the abutting surface of the rear guide plate and the paper feeding table; the control unit controls the servo motor and the suction pump. The control part controls the servo motor and the suction pump in the following modes: the suction pump sucks the bottommost paper of the loaded paper, and the servo motor enables the rear edge of the bottommost paper to retreat and to be stored in the paper rear edge storage part, and then the paper is enabled to advance.
As described above, the sheet feeding device of the present invention supports the front lower edge of the loaded sheet bundle with the support sheet to be separated from the sheet feeding table, and sucks the bottommost sheet of the loaded sheets downward to advance the sheet after retreating the sheet, so that the sheets can be fed one by one even if the sheet is thin, and erroneous feeding of a plurality of sheets at a time is prevented.
In the paper feeding device of the invention, the rear guide plate is provided with a knocking surface arranged behind the paper rear edge containing part; the control part preferably controls the servo motor to convey the bottommost sheet to the front in the sheet feeding direction after the bottommost sheet sent to the rear abuts against the collision surface.
Therefore, because the rear part of the paper rear edge containing part is provided with the overtaking collision surface, the bottommost paper sent to the rear part is conveyed to the front part of the paper feeding direction after abutting against the overtaking collision surface, and the fed paper can be aligned reliably at intervals in the conveying direction.
The front end of the support piece is preferably inclined downward. Thus, the fed paper can be easily drawn out from the rear.
An angle θ between the upper surface of the support piece and the guide surface of the guide plate abutting against the leading edge of the sheet is preferably 80 degrees or more and 100 degrees or less. Thus, the loaded paper can be prevented from being scattered.
The sheet feeding method of the present invention uses a sheet feeding device to sequentially feed sheets of paper loaded in a thickness direction in an up-down direction from below, the sheet feeding device comprising: the paper feeding device comprises a paper feeding table, a guide plate, a rear guide plate, a suction hole, a suction pump, a paper feeding conveying belt, a servo motor, a support sheet and a paper rear edge storage part. The paper feeding table loads paper; the guide plate is vertically arranged on the paper feeding table and is abutted against the front edge of the loaded paper; the rear guide plate has an abutting surface to abut against the rear edge of the loaded paper; the paper is sucked downwards through the suction holes; a suction pump for supplying negative pressure to the suction hole; the paper feeding conveying belt moves the paper to the front or the back of the paper feeding direction and consists of a paper feeding roller or a belt conveying belt; the servo motor rotationally drives the paper feeding conveying belt; the supporting sheet supports the front lower end of the paper stacked in a bundle in a state of being separated from the paper feeding table; the paper rear edge accommodating part is formed by a gap arranged between the lower end of the abutting surface of the rear guide plate and the paper feeding table. In the paper feeding method, the suction pump sucks the bottommost paper of the loaded paper, the servo motor enables the rear edge of the bottommost paper to retreat and store in the paper rear edge storage part, and then the paper is enabled to advance.
In the paper feeding method of the present invention, the rear guide plate of the paper feeding device preferably has a rear collision surface disposed behind the rear edge storage portion, and after the bottommost paper fed to the rear by the servo motor abuts against the collision surface, the bottommost paper is conveyed forward in the paper feeding direction by the servo motor.
As described above, the sheet feeding device and the sheet feeding method of the present invention can feed sheets one by one even if the sheets are thin, and can prevent the sheets from being carelessly fed under the condition that a plurality of sheets are overlapped.
Drawings
Fig. 1 is a side view of a paper feeding device according to an embodiment of the present invention.
Fig. 2 is an enlarged front view showing a main part of a lower end portion of the guide plate in fig. 1.
Fig. 3 is an enlarged side view showing a main part of a lower end portion of the guide plate in fig. 1.
Fig. 4 is an enlarged side view showing a main portion in the vicinity of the guide surface of the rear guide in fig. 1.
Fig. 5 is an explanatory view of a state when the sheet feeding device of fig. 1 feeds sheets.
Fig. 6 is a side view of a known sheet feeding device.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments.
Fig. 1 shows a sheet feeding device 100 according to a first embodiment of the present invention. The sheet feeding device 100 is used for feeding sheets in post-process devices such as a printing machine and a punching device, and sequentially feeds sheets X loaded in a vertical direction along a thickness direction from below, and mainly includes a sheet feeding device body 1, a guide plate 2, and a rear guide plate 3. In FIG. 1, the symbol Y denotes a conveyor belt for conveying the sheet X to a post-processing apparatus.
The paper feeding device body 1 includes: a paper feeding table 11 in a horizontal plate shape; suction holes 12 that downwardly suck the fed sheet X; a suction pump (not shown) for supplying negative pressure to the suction hole 12; paper feed rollers (paper feed conveyor belts) 13, \8230 \ 8230;, which move the paper X forward or backward in the paper feed direction; a servo motor (not shown) for driving the paper feeding rollers 13, \8230; and a control section (not shown). This configuration conveys the sheets X loaded on the upper face 11a of the sheet feed table 11 to the front and rear in the sheet feed direction.
The guide plate 2 is in the form of a long plate as shown in fig. 2 and 3, and is suspended above the upper surface 1a of the sheet feeding table 11 from a cross pallet 4 that straddles the sheet feeding table so that the plate thickness direction coincides with the sheet feeding direction (depth direction in fig. 2). A guide surface 21 inclined toward the upstream side in the sheet feeding direction is provided on the upper side of a surface (front surface side of the sheet in fig. 2, right side surface in fig. 3) of the lower end portion of the guide plate 2 on the upstream side in the sheet feeding direction.
As shown in fig. 2, two guide plates 2 are provided at intervals in the width direction of the sheet feeding table 11, and the interval between the two guide plates 2 and the sheet feeding gap 22 can be appropriately changed according to the size and thickness of the sheet X, wherein the sheet feeding gap 22 is formed by the gap between the guide plate 2 and the sheet feeding table 11. The guide plate 2 includes a pair of left and right support hooks 5, 5 that support the bundle of stacked sheets X in a state where the front lower edge Xc is separated from the sheet feed table 11.
As shown in fig. 2 and 3, the support hook 5 is fixed to the inner side surface of the guide plate 2 by a slide plate 6 with screws. The support hook 5 is formed by bending a plate material into an L-shape, and has a vertical portion 51 and a support piece 52 bent forward relative to the vertical portion 51, and is fixed to the slide plate 6 from the side of the vertical portion 51 by a screw substitute 53 bent at a right angle.
The slide plate 6 is fixed to the side surface of the guide plate 2 by a hexagon socket head cap screw 62 through a vertically extending elongated hole 61. The support hook 5 can adjust the height from the sheet feed table 11 to the support piece 52 by: the hexagonal socket head cap screw 62 is loosened to slide the slide plate 6 up and down. The upper surface 52a of the support piece 52 is preferably inclined downward at the tip, and the angle θ between the support piece and the guide surface 21 is preferably 80 degrees or more and 100 degrees or less. In this way, the sheet X can be easily drawn out from the rear.
As shown in fig. 4, the rear guide 3 includes: an abutting surface 31 abutting the rear edge of the loaded paper sheet X; a trailing edge paper storage section 32 formed by a gap provided below the contact surface 31; a collision surface 33 provided behind the paper rear edge storage section 32; a hook 34 that pulls up the trailing edge of the loaded paper sheet X in a bundle; and a hand turning handle 35 (see fig. 1). The abutment surface 31 can be moved forward and backward by turning the handle 35 by hand. The contact surface 31 is provided with an upper side inclined rearward, is substantially parallel to the guide surface 21 of the guide plate 2, and is capable of changing the magnitude of the inclination angle.
As shown in fig. 5 (a), when the sheet feeding device 100 is used, the bundle of sheets X is first placed between the guide plate 2 and the rear guide plate 3 by placing the front edge Xa thereof on the support piece 52 of the support hook 5 while abutting the rear edge Xb thereof on the guide surface 21 and abutting the abutment surface 31.
In this state, the sheet feeding operation of the sheet feeding device 100 is started, and as shown in fig. 5 (b), the suction pump starts to operate to suck the bottommost sheet X1 of the loaded sheets X through the suction hole 12, and the servo motor also starts to operate to rotate the sheet feeding roller 13 backward to draw out the bottommost sheet X1 from behind. The leading edge X1a of the extracted bottom-most sheet X1 is separated from the support piece 52, and the trailing edge X1b is retracted and stored in the sheet trailing edge storage section 32 and then abuts against the hitting surface 33. The suction pump continuously sucks the paper X with a certain pressure from the start of paper feeding to the end of paper feeding.
As shown in fig. 5 (c), when the bottommost sheet X1 abuts against the collision surface 33, the servo motor and the sheet feed roller 13 are controlled to rotate in reverse, so that the bottommost sheet X1 advances, passes through the sheet feed gap 22, and is conveyed to the downstream conveyor belt Y.
The sheet feeding device and the sheet feeding method of the present invention are described above, but the present invention is not limited to the above embodiments, and for example, the supporting sheets may be not limited to 2 sheets, and may be 1 sheet or 3 sheets or more. The rear guide plate may not be provided with a overtaking collision surface. The paper feeding conveyer belt is not limited to the paper feeding roller, but may be a belt conveyer belt formed by endless belt. The front end of the support piece may not be inclined downward, and the angle between the front end of the support piece and the guide surface may be less than 80 degrees or more than 100 degrees. The guide surface may not be inclined.
Claims (6)
1. A sheet feeding device for sequentially feeding sheets loaded in a vertical direction in a thickness direction from below, comprising:
a sheet feeding table that loads the sheet;
a guide plate vertically provided on the sheet feeding table and abutting against a leading edge of the loaded sheet;
a rear guide having an abutment surface to abut a rear edge of the loaded paper;
a suction hole that sucks the paper downward;
a suction pump for supplying negative pressure to the suction hole;
a paper feed conveyor belt, which moves the paper to the front or back of the paper feed direction and is composed of a paper feed roller or a belt conveyor belt;
a servo motor for rotationally driving the paper feed conveying belt;
a support sheet that supports a front lower end of the stacked sheets in a bundle in a state of being separated from the sheet feed table;
a paper trailing edge storage section formed by a gap provided between a lower end of a contact surface of the rear guide plate and the paper feed table; and
a control unit that controls the servo motor and the suction pump;
wherein the control unit controls the servo motor and the suction pump in the following manner: the suction pump sucks the bottommost sheet of the loaded sheets, and the servo motor retracts the rear edge of the bottommost sheet and stores the sheet in the sheet rear edge storage section, and then advances the sheet.
2. The sheet feeding device according to claim 1, said rear guide having a jogger surface provided behind said sheet rear edge storage; the control part controls the servo motor to convey the bottommost paper to the front of the paper feeding direction after the bottommost paper conveyed to the rear is abutted to the overtaking collision surface.
3. The sheet feeding device of claim 1, wherein the front end of the supporting piece is inclined downward.
4. The sheet feeding device according to claim 1, wherein an angle θ between an upper surface of the supporting piece and a guide surface of the guide plate abutting against the leading edge of the sheet is 80 degrees or more and 100 degrees or less.
5. A sheet feeding method of sequentially feeding sheets loaded in a thickness direction in an up-down direction from below using a sheet feeding device, the sheet feeding device comprising:
a sheet feeding table that loads the sheet;
a guide plate which is provided vertically on the sheet feeding table and abuts against a leading edge of the loaded sheet;
a rear guide having an abutment surface to abut a rear edge of the loaded paper;
a suction hole that sucks the paper downward;
a suction pump for supplying negative pressure to the suction hole;
a paper feed conveyor belt, which moves the paper to the front or back of the paper feed direction and is composed of a paper feed roller or a belt conveyor belt;
a servo motor for rotationally driving the paper feed conveying belt;
a support sheet that supports a front lower end of the stacked sheets in a bundle in a state of being separated from the sheet feeding table; and
a paper trailing edge storage section formed by a gap provided between a lower end of a contact surface of the rear guide plate and the paper feed table;
wherein the suction pump sucks a bottommost sheet of the loaded sheets, and the servo motor retracts a trailing edge of the bottommost sheet and stores the sheet in the sheet trailing edge storage section, and then advances the sheet.
6. The sheet feeding method of claim 5, wherein the rear guide of the sheet feeding device has a following surface provided at the rear of the sheet rear edge receiving portion, and the sheet feeding device conveys the bottommost sheet toward the front in the sheet feeding direction by the servo motor after abutting the bottommost sheet sent to the rear by the servo motor against the following surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022065508A JP7133261B1 (en) | 2022-04-12 | 2022-04-12 | Paper feeder and paper feed method |
| JP2022-065508 | 2022-04-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115771788A true CN115771788A (en) | 2023-03-10 |
| CN115771788B CN115771788B (en) | 2024-03-12 |
Family
ID=83192276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211553379.XA Active CN115771788B (en) | 2022-04-12 | 2022-12-05 | Paper feeding device and paper feeding method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7133261B1 (en) |
| CN (1) | CN115771788B (en) |
| TW (1) | TWI833454B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295719A (en) * | 1996-04-30 | 1997-11-18 | Mitsubishi Heavy Ind Ltd | Feeding device of paper board |
| JP2001253576A (en) * | 2000-03-08 | 2001-09-18 | Nippoh Aggregate Book Bindding Ltd | Sucking feed table and method of separately conveying book therewith |
| JP2002362761A (en) * | 2001-06-05 | 2002-12-18 | Mitsubishi Heavy Ind Ltd | Feeder for corrugated board sheet |
| CN1683225A (en) * | 2004-04-06 | 2005-10-19 | 三和制作株式会社 | Paper feeding method and apparatus |
| US20140054842A1 (en) * | 2012-08-22 | 2014-02-27 | Ferag Ag | Device for separating individual, two-dimensional, flexible objects from the lower side of a stack |
| CN106715296A (en) * | 2014-08-29 | 2017-05-24 | 冢崎昌弘 | Paper supplying device |
| CN110342290A (en) * | 2019-08-08 | 2019-10-18 | 深圳市君兴精机纸箱机械有限公司 | Air draught servo is exempted to press dexter feeder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07117935A (en) * | 1993-10-22 | 1995-05-09 | Ricoh Co Ltd | Sheet feeder |
| JPH11286346A (en) * | 1998-03-31 | 1999-10-19 | Minolta Co Ltd | Paper feeder |
-
2022
- 2022-04-12 JP JP2022065508A patent/JP7133261B1/en active Active
- 2022-11-18 TW TW111144087A patent/TWI833454B/en active
- 2022-12-05 CN CN202211553379.XA patent/CN115771788B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295719A (en) * | 1996-04-30 | 1997-11-18 | Mitsubishi Heavy Ind Ltd | Feeding device of paper board |
| JP2001253576A (en) * | 2000-03-08 | 2001-09-18 | Nippoh Aggregate Book Bindding Ltd | Sucking feed table and method of separately conveying book therewith |
| JP2002362761A (en) * | 2001-06-05 | 2002-12-18 | Mitsubishi Heavy Ind Ltd | Feeder for corrugated board sheet |
| CN1683225A (en) * | 2004-04-06 | 2005-10-19 | 三和制作株式会社 | Paper feeding method and apparatus |
| US20140054842A1 (en) * | 2012-08-22 | 2014-02-27 | Ferag Ag | Device for separating individual, two-dimensional, flexible objects from the lower side of a stack |
| CN106715296A (en) * | 2014-08-29 | 2017-05-24 | 冢崎昌弘 | Paper supplying device |
| CN110342290A (en) * | 2019-08-08 | 2019-10-18 | 深圳市君兴精机纸箱机械有限公司 | Air draught servo is exempted to press dexter feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202340071A (en) | 2023-10-16 |
| JP7133261B1 (en) | 2022-09-08 |
| TWI833454B (en) | 2024-02-21 |
| JP2023155972A (en) | 2023-10-24 |
| CN115771788B (en) | 2024-03-12 |
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