CN111204600A - Medium supply device - Google Patents
Medium supply device Download PDFInfo
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- CN111204600A CN111204600A CN201911004504.XA CN201911004504A CN111204600A CN 111204600 A CN111204600 A CN 111204600A CN 201911004504 A CN201911004504 A CN 201911004504A CN 111204600 A CN111204600 A CN 111204600A
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- Prior art keywords
- suction
- medium
- separation
- sheet
- unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
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- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
The invention provides a medium supply device, in which the uppermost medium loaded on a loading platform is easily separated from other media and the medium is easily supplied. The paper feeding device (an example of a medium feeding device) includes: a loading table on which a plurality of sheets (an example of a medium) are loaded; a conveying mechanism that conveys an uppermost sheet among the plurality of sheets loaded on the loading table; a central upper suction mechanism, a left upper suction portion, and a right upper suction portion (which are examples of upper suction portions) that suck the uppermost sheet upward to the conveyance mechanism; a left-side separation suction portion and a right-side separation suction portion (which are an example of a separation suction portion) which suck a second sheet (an example of another medium) located below the uppermost sheet to separate the second sheet from the uppermost sheet.
Description
Technical Field
The present invention relates to a medium supplying apparatus.
Background
Conventionally, as a paper feeding device that feeds paper, which is an example of a medium, to a printing section of a printing apparatus or the like, there is known a paper feeding device including: a loading table for loading a plurality of sheets; a conveying mechanism that conveys an uppermost sheet among the plurality of sheets loaded on the loading table; and a suction mechanism that sucks the uppermost sheet to the conveyance mechanism by sucking air.
Further, there has been proposed a paper feeding device in which an air layer is formed between an uppermost sheet and a succeeding sheet (second sheet) by pressing the uppermost sheet downward with a separation protrusion protruding from an adsorption surface adsorbing the uppermost sheet on a loading table, and separated air is blown to the air layer (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 5163425
Disclosure of Invention
Problems to be solved by the invention
In addition, when the air layer is formed using the separation protrusion as described above, since a part of the uppermost sheet is pressed down by the separation protrusion, the uppermost sheet is deformed in the height direction. Thus, there is the possibility of: the uppermost sheet comes into contact with a conveyance path, a gate or the like provided for the purpose of preventing overlapped conveyance, resulting in conveyance jam.
Further, in the case where a thick paper is pressed down by separating the protrusions, it is difficult to form the air layer as compared with a thin paper. Therefore, the separability between the uppermost sheet and the following sheets varies depending on the type of sheet.
An object of the present invention is to provide a medium supply device capable of easily separating an uppermost medium loaded on a loading table from other media and easily supplying the medium.
Means for solving the problems
In 1 aspect, there is provided a medium supply device, wherein the medium supply device includes: a loading table that loads a plurality of media; a conveying mechanism that conveys an uppermost medium among the plurality of media loaded on the loading table; an upper suction unit configured to suck the uppermost medium to the transport mechanism by sucking the uppermost medium upward; and a separation suction portion that sucks the other medium located in a lower portion of the uppermost medium to separate the other medium from the uppermost medium.
ADVANTAGEOUS EFFECTS OF INVENTION
With the above-described configuration, the uppermost medium loaded on the loading table can be easily separated from other media and the medium can be easily supplied.
Drawings
Fig. 1 is a configuration diagram showing a printing system including a paper feeding device according to an embodiment.
Fig. 2 is a diagram showing a paper feeding device according to an embodiment.
Fig. 3 is a diagram showing a control configuration of a paper feeding device according to an embodiment.
Fig. 4 is a flowchart for explaining a paper feeding operation in one embodiment.
Fig. 5A is (a) a diagram for explaining a paper feeding operation in one embodiment.
Fig. 5B is a diagram (second diagram) for explaining a paper feeding operation in one embodiment.
Fig. 5C is a diagram (third) for explaining a paper feeding operation in one embodiment.
Fig. 6 is an enlarged view showing a left separation suction portion in one embodiment.
Fig. 7 is an enlarged view showing a right separation suction portion in one embodiment.
Description of the reference numerals
1. A paper supply device; 11. a mounting table; 12. a left baffle; 13. a right baffle; 20. a conveying mechanism; 21. a conveyor belt; 22. 23, a belt wheel; 30. a central upper suction mechanism; 40. a floating air blowing mechanism; 50. a left side pumping mechanism; 51. a left side separation suction section; 51a, a left separating suction gate; 52. a left upper suction portion; 53. a left side suction source; 54. a left suction flow path; 60. a right side pumping mechanism; 61. a right separation suction section; 61a, a right side separating suction gate; 62. a right upper suction portion; 63. a right side suction source; 64. a right side suction flow path; 71. a control unit; 72. a storage unit; 73. an interface section; 81. a loading platform lifting driving part; 82. a conveyance drive section; 83. a left suction portion moving member; 83a, a guide; 84. a right suction portion moving member; 84a, a guide; 90. a paper detection sensor; 100. a printing system; 101. a printing device; 110. a printing section; 120. a conveying section; 130. a1 st paper feeding section; 140. a2 nd paper feeding section; 150. a3 rd sheet feeding section; 131. 141, 151, paper feed tray; 132. 142, 152, a scraping roller; 133. 143, 153, a pickup roller; 161-165 and conveying roller pairs; 166. aligning the pair of adjusting rollers; a1, drawing air from the upper center; a2, floating air; a10, air is merged on the left side; a11, separating the sucked air at the left side; a12, sucking air from the upper left part; a20, right side air convergence; a21, separating the sucked air on the right side; a22, sucking air from the upper right part; D. a direction of conveyance; p, paper; r, a conveying path.
Detailed Description
Hereinafter, a paper feeding device (an example of a medium feeding device) according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a configuration diagram showing a printing system 100 including a paper feeding device 1 according to an embodiment.
Fig. 2 is a diagram showing the paper feeding device 1.
Fig. 3 is a diagram showing a control configuration of the paper feeding device 1.
Note that the respective directions of the front-back direction, the vertical direction, and the horizontal direction shown in fig. 1 and 2, and fig. 5A to 5C, fig. 6, and fig. 7 described later are merely examples of the case where the transport direction of the sheet P is set to the front, and for example, the front-back direction and the horizontal direction are horizontal directions, and the vertical direction is a vertical direction.
The printing system 100 shown in fig. 1 includes a paper feeder 1 and a printing device 101.
The paper feeding device 1 feeds the paper P to the printing portion 110 of the printing device 101. The paper feeding device 1 may be provided integrally with the printing device 101. The target of the paper feeding device 1 to feed the paper P is not limited to the printing apparatus 101, and may be another device such as a transport device. The paper P is an example of a medium, and may be another medium such as a film. Further, for example, a plurality of paper feed devices 1 may be arranged in a vertical row, and the plurality of paper feed devices 1 may feed the paper P to a single printing device 101.
As shown in fig. 1 and 2, the sheet feeding device 1 includes a loading table 11, a left side fence 12, a right side fence 13, a conveying mechanism 20, a center upper suction mechanism 30, a floating air blowing mechanism 40, a left side suction mechanism 50, and a right side suction mechanism 60.
In fig. 1, a part of the right baffle 13, the left suction mechanism 50, and the right suction mechanism 60 are not shown.
As shown in fig. 3, the sheet feeding device 1 includes a control portion 71, a storage portion 72, an interface portion 73, a loading table elevation driving portion 81, a conveyance driving portion 82, a left suction portion moving member 83, a right suction portion moving member 84, and a sheet detection sensor 90.
A plurality of sheets P are loaded on the loading table 11 shown in fig. 1 and 2. The loading platform 11 is moved up and down by the driving of the loading platform up-and-down driving unit 81 shown in fig. 3. For example, when light emitted horizontally by a light emitting portion of a loading surface detection sensor, not shown, at a predetermined loading surface height is received by a light receiving portion of the loading surface detection sensor without being blocked by the sheet P, the control portion 71 controls the loading table elevation driving portion 81 to elevate the loading table 11. Thereby, the height of the uppermost sheet P1 is maintained at a predetermined loading surface height.
As shown in fig. 2, the left flapper 12 and the right flapper 13 are disposed opposite to each other in the width direction (left-right direction) orthogonal to the conveying direction D of the sheet P. Preferably, the left and right side fences 12 and 13 are arranged to be movable on the loading table 11 in the width direction of the sheet P in accordance with the size and orientation of the sheet P.
The conveying mechanism 20 shown in fig. 1 includes a conveyor belt 21 and pulleys 22 and 23 on which the conveyor belt 21 is hung. One of the pulleys 22, 23 is a driving pulley and the other is a driven pulley. The drive pulley is rotated by the drive of the conveyance drive unit 82 shown in fig. 3, and rotates the conveyor belt 21. Thereby, the conveyance mechanism 20 conveys the uppermost sheet P1 in the conveyance direction D (forward).
The conveyor belt 21 is provided with a plurality of holes through which central upper suction air a1 sucked by a central upper suction mechanism 30 described later passes.
The conveyance mechanism 20 is disposed at the center of the sheet P in the width direction (left-right direction) perpendicular to the conveyance direction D, as an example. Further, a plurality of conveying mechanisms 20 may be arranged in the width direction (left-right direction), and in this case, the central upper suction mechanism 30 may be arranged in each of the conveying mechanisms 20.
The conveying mechanism 20 may have other conveying means such as a conveying roller as the conveying means, instead of the conveying belt 21. When the conveyance mechanism 20 includes the conveyance roller, the conveyance drive unit 82 rotates the drive roller (conveyance roller) without rotating the drive pulley.
The central upper suction mechanism 30 is disposed, for example, in an area surrounded by the conveyor belt 21 of the conveyor mechanism 20. The center upper suction mechanism 30 sucks the uppermost sheet P1 upward by the center upper suction air a1, and causes the uppermost sheet P1 to be attracted to the conveyor belt 21 (conveyor mechanism 20). The central upper suction mechanism 30 functions as an example of an upper suction unit that sucks the uppermost sheet P1 upward to cause the uppermost sheet P1 to be attracted to the conveyor belt 21 (conveyor mechanism 20), together with the left upper suction unit 52 and the right upper suction unit 62, which will be described later. The upper suction portion may include at least one of the central upper suction mechanism 30, the left upper suction portion 52, and the right upper suction portion 62.
The floating air blowing mechanism 40 is disposed at a position forward in the conveyance direction D of the plurality of sheets P stacked on the stacker 11, and blows floating air a2 for floating, for example, about 10 sheets P including the uppermost sheet P1.
As shown in fig. 2, the left suction mechanism 50 has a left separation suction portion 51, a left upper suction portion 52, a left suction source 53, and a left suction flow path 54.
The right suction mechanism 60 has a right separation suction section 61, a right upper suction section 62, a right suction source 63, and a right suction flow path 64.
The left separation suction section 51 and the right separation suction section 61 are examples of separation suction sections. The left upper suction portion 52 and the right upper suction portion 62 are an example of a side upper suction portion. Left suction source 53 and right suction source 63 are one example of suction sources. The left suction flow path 54 and the right suction flow path 64 are examples of suction flow paths.
The left separating and suctioning portion 51 suctions, at the end of the sheet P in the width direction (left-right direction) perpendicular to the conveyance direction D, the other sheet P positioned below the uppermost sheet P1, i.e., the second sheet P2 (an example of another medium) from the top by the left separating and suctioning air a11 so as to separate the sheet P2 from the uppermost sheet P1.
The left separating and suctioning portion 51 is disposed at, for example, a hole provided in the left flapper 12, and a part of the left separating and suctioning portion 51 protrudes toward the sheet P side with respect to the left flapper 12. The left separation suction unit 51 sucks the second sheet P2 (left separation suction air a11) obliquely downward, but may suck the second sheet horizontally or vertically downward. The left separation suction unit 51 can suck not only the second sheet P2 but also the third sheet P and the fourth sheet P.
As shown in fig. 6, the left separation suction portion 51 preferably has a left separation suction gate 51 a. The left separation suction shutter 51a is moved to a position where a suction port provided on the paper P side in the left separation suction unit 51 is closed and a position where the suction port is opened by drive control of a control unit 71, which will be described later.
The left separation suction gate 51a is an example of a gate that openably and closably closes a suction path of the left separation suction unit 51 (i.e., a suction path extending from the left separation suction unit 51 to the left suction source 53 via the left suction channel 54). The left separation suction gate 51a may be provided at a position such as the inside of the left separation suction unit 51, a connection portion between the left separation suction unit 51 and the left suction channel 54, the inside of the left suction channel 54, a connection portion between the left suction channel 54 and the left suction source 53, and the inside of the left suction source 53.
The left upper suction portion 52 sucks the uppermost sheet P1 upward by the left upper suction air a12 at a position on the left side (an example of the end portion side) of the center in the width direction of the sheet P. The diameter of the left upper suction portion 52 is larger than that of the left separation suction portion 51, and the opening area of the suction port of the left upper suction portion 52 provided on the sheet P side is smaller than that of the suction port of the left separation suction portion 51 provided on the sheet P side.
Further, the left separating and suctioning portion 51 and the left upper suctioning portion 52 are preferably disposed on the left flapper 12 at positions forward (for example, at the front end portion) in the conveyance direction D from the center in the conveyance direction D of the sheets P loaded on the loading table 11. The left separating suction unit 51 and the left upper suction unit 52 are disposed beside the loaded paper P in the width direction (left-right direction), but may be disposed at a position forward or rearward of the paper P in the transport direction D.
The left suction source 53 sucks air by both the left separation suction portion 51 and the left upper suction portion 52. The left suction source 53 is, for example, a suction fan.
The left suction channel 54 connects both the left separation suction unit 51 and the left upper suction unit 52 to the left suction source 53. Therefore, in the left suction flow path 54, the left separation suction air a11 sucked by the left separation suction portion 51 and the left upper suction air a12 sucked by the left upper suction portion 52 merge and are sucked as left merged air a10 by the left suction source 53. Since the left separation/suction section 51 is disposed to be movable in the vertical direction, for example, it is preferable that the left suction channel 54 has flexibility and is deformable following the movement of the left separation/suction section 51, which will be described later in detail.
Further, in the left suction mechanism 50, the flow path resistance of the left suction flow path 54 continuing from the left suction source 53 to the left separation suction portion 51 is larger than the flow path resistance of the left suction flow path 54 continuing from the left suction source 53 to the left upper suction portion 52. It is preferable that the suction amount of the left separation suction air a11 sucked out by the left separation suction unit 51 is smaller than the suction amount of the left upper suction air a12 sucked out by the left upper suction unit 52. In the left suction mechanism 50, a suction source dedicated to the left separation suction unit 51 may be disposed, for example, when the left upper suction unit 52 is omitted. In addition, the left suction source 53 may also serve as a suction source for the central upper suction mechanism 30. Further, a single suction source common to the left suction mechanism 50 and the right suction mechanism 60, which will be described later, may be disposed.
The right separating and suctioning portion 61 suctions, at the end of the sheet P in the width direction (left-right direction) perpendicular to the conveyance direction D, the second sheet P2 (an example of another medium) which is the other sheet P positioned below the uppermost sheet P1 by the right separating and suctioning air a21 so as to separate the sheet P2 from the uppermost sheet P1. The right separating and suctioning portion 61 is disposed beside the loaded paper P in the width direction (left-right direction), but may be disposed at a position forward of the paper P in the conveyance direction D or rearward of the paper P in the conveyance direction D.
The right separating and suctioning portion 61 is disposed at, for example, a hole provided in the right shutter 13, and a part of the right separating and suctioning portion 61 protrudes toward the sheet P side with respect to the right shutter 13. The right separation suction unit 61 sucks the second sheet P2 (right separation suction air a21) obliquely downward, but may suck the second sheet horizontally or vertically downward. The right separation suction unit 61 can suck not only the second sheet P2 but also the third sheet P and the fourth sheet P.
As shown in fig. 7, the right separation suction portion 61 preferably has a right separation suction gate 61 a. The right separation suction shutter 61a is moved to a position where a suction port provided on the paper P side in the right separation suction unit 61 is closed and a position where the suction port is opened by drive control of a control unit 71, which will be described later.
The right separation suction shutter 61a is an example of a shutter that openably and closably closes a suction path of the right separation suction unit 61 (i.e., a suction path extending from the right separation suction unit 61 to the right suction source 63 via the right suction channel 64). The right separation suction gate 61a may be provided in the right separation suction unit 61, a connection portion between the right separation suction unit 61 and the right suction channel 64, a connection portion between the right suction channel 64 and the right suction source 63, and the right suction source 63.
The right upper suction portion 62 sucks the uppermost sheet P1 upward by the right upper suction air a22 at a position on the right side (an example of the end portion side) with respect to the center in the width direction of the sheet P. The diameter of the right upper suction portion 62 is larger than that of the right separation suction portion 61, and the opening area of the suction port of the right upper suction portion 62 provided on the sheet P side is smaller than that of the suction port of the right separation suction portion 61 provided on the sheet P side.
Further, the right separating and suctioning portion 61 and the right upper suctioning portion 62 are preferably disposed on the right flapper 13 at positions forward (for example, at the front end portion) in the conveyance direction D with respect to the center in the conveyance direction D of the sheets P loaded on the loading table 11. The right separating suction unit 61 and the right upper suction unit 62 are disposed beside the loaded paper P in the width direction (left-right direction), but may be disposed at a position forward or rearward of the paper P in the transport direction D.
The right suction source 63 sucks air by both the right separation suction portion 61 and the right upper suction portion 62. The right suction source 63 is for example a suction fan.
The right suction channel 64 connects both the right separation suction unit 61 and the right upper suction unit 62 to the right suction source 63. Therefore, in the right suction flow path 64, the right separation suction air a21 sucked out by the right separation suction portion 61 and the right upper suction air a22 sucked out by the right upper suction portion 62 are merged and sucked by the right suction source 63 as right merged air a 20. Since the right separation suction section 61 is disposed to be movable in the vertical direction, for example, it is preferable that the right suction channel 64 has flexibility and is deformable following the movement of the right separation suction section 61, which will be described later in detail.
In the right suction mechanism 60, the flow path resistance of the right suction flow path 64 continuing from the right suction source 63 to the right separation suction unit 61 is greater than the flow path resistance of the right suction flow path 64 continuing from the right suction source 63 to the right upper suction unit 62. The right separation suction unit 61 preferably sucks the right separation suction air a21 in an amount smaller than the right upper suction air a22 sucked in by the right upper suction unit 62. In the right suction mechanism 60, when the right upper suction unit 62 is omitted, for example, a suction source dedicated to the right separation suction unit 61 may be provided. In addition, the right suction source 63 may also serve as a suction source for the central upper suction mechanism 30.
In the present embodiment, the left separation suction unit 51 and the right separation suction unit 61 are capable of sucking the second sheet P2, which is another sheet P located below the uppermost sheet P1, to separate the sheet P2 from the uppermost sheet P1, but a separation air blowing unit that blows separation air for separating the uppermost sheet P1 from the second sheet P2 may be further provided, the separation air blowing unit being disposed at a position forward in the conveyance direction D with respect to the plurality of sheets P stacked on the stacking table 11.
The control Unit 71 shown in fig. 3 includes a processor (e.g., a CPU) functioning as an arithmetic Processing Unit that controls the operation of the entire paper feeding device 1, and controls the operations of the respective units such as the Central upper suction mechanism 30 and the floating air blowing mechanism 40. When the paper feeding device 1 is provided integrally with the printing device 101, the control unit 71 may also serve as a control unit of the printing device 101.
The control unit 71 functions as an example of a shutter control unit as follows: when the second sheet P2 is not detected by the sheet detection sensor 90 described later, the control unit 71 controls the left separation suction gate 51a and the right separation suction gate 61a so that the suction path of the left separation suction unit 51 and the suction path of the right separation suction unit 61 are closed.
The control unit 71 functions as an example of a moving member control unit as follows: the control unit 71 controls the left suction portion moving member 83 and the right suction portion moving member 84 to move the left separation suction portion 51 and the right separation suction portion 61 based on the sheet information, which will be described later, of the plurality of sheets of paper P loaded on the loading table 11.
Further, the control section 71 may control the left suction source 53 and the right suction source 63 based on the sheet information of the sheet P to adjust the suction amounts of the left separation suction section 51, the left upper suction section 52, the right separation suction section 61, the right upper suction section 62, and the like (the suction amounts of the left separation suction air a11, the left upper suction air a12, the right separation suction air a21, the right upper suction air a22, and the like). The controller 71 may adjust the amount of suction of the upper center suction air a1 sucked by the upper center suction mechanism 30, the amount of blow-off of the floating air a2 blown off by the floating air blowing mechanism 40, and the like, based on the sheet information of the sheet P.
The storage unit 72 is, for example, a rom (read Only memory) which is a read Only semiconductor memory in which a predetermined control program is stored in advance, a ram (random Access memory) which is a random Access semiconductor memory used as a work memory area as needed when the processor executes various control programs, or the like.
The interface unit 73 transmits and receives various kinds of information to and from external devices such as a control unit of the printing apparatus 101. For example, the interface unit 73 receives information such as a paper feed request and a paper feed stop request from the control unit of the printing apparatus 101, and the control unit 71 controls the operations of the respective units of the paper feed apparatus 1 based on the information.
The loading platform elevation driving unit 81 includes a motor (an example of a driver) for elevating the loading platform 11.
The conveyance driving unit 82 includes a motor (an example of an actuator) that rotates a driving pulley that is one of the pulleys 22 and 23 of the conveyance mechanism 20.
The left separating and suctioning member 83 is an example of a moving member that moves the left separating and suctioning member 51, and includes, for example, a guide 83a shown in fig. 6 provided on the left baffle 12, and a motor (an example of an actuator) that moves the left separating and suctioning member 51 in the vertical direction along the guide 83 a. Further, it is preferable that the left separating and suctioning portion moving member 83 moves the left separating and suctioning portion 51 so that the distance between the left separating and suctioning portion 51 and the left upper suctioning portion 52 is variable, but the moving direction of the left separating and suctioning portion 51 is not limited to the vertical direction.
The right separating and suctioning member 84 is an example of a moving member that moves the right separating and suctioning member 61, and includes, for example, a guide 84a shown in fig. 7 provided on the right baffle 13, and a motor (an example of an actuator) that moves the right separating and suctioning member 61 in the vertical direction along the guide 84 a. Further, it is preferable that the right separating and suctioning portion moving means 84 moves the right separating and suctioning portion 61 so that the distance between the right separating and suctioning portion 61 and the right upper suctioning portion 62 is variable, but the moving direction of the right separating and suctioning portion 61 is not limited to the up-down direction.
The control unit 71 controls the left suction-section moving member 83 to move the left separation suction section 51 and controls the right suction-section moving member 84 to move the right separation suction section 61, based on the sheet information (an example of the medium information) of the plurality of sheets P loaded on the loading table 11.
The paper information includes, for example, the size of the paper P and the type of the paper P. The paper information is obtained by the control section 71 based on, for example, a print job.
The size of the paper sheet P is, for example, A3(297 mm. times.420 mm), A4(210 mm. times.297 mm), or the like. The types of paper P may be classified into plain paper, thick paper, thin paper, and the like, but may be classified into the basis weight and the like.
For example, the larger the size of the sheet P or the larger the weight per unit area of the sheet P (thick paper or the like), the larger the weight of the sheet P, and therefore, it is preferable to move the left separation suction portion 51 and the right separation suction portion 61 upward to narrow the interval between the left separation suction portion 51 and the left upper suction portion 52 and the interval between the right separation suction portion 61 and the right upper suction portion 62, thereby allowing the left separation suction portion 51 and the right separation suction portion 61 to easily suction the second sheet P2.
The control unit 71 may adjust the suction amount of the left suction source 53, the suction amount of the right suction source 63, and the suction amount of the center upper suction mechanism 30 based on the sheet information. For example, it is preferable that the control section 71 increases the suction amount of the left suction source 53, the suction amount of the right suction source 63, and the suction amount of the center upper suction mechanism 30 as the size of the sheet P is larger or the weight per unit area of the sheet P is larger. The control unit 71 may adjust the blowing amount of the floating air blowing mechanism 40 based on the paper information.
Further, the control unit 71 may obtain environmental information such as humidity and air flow of the environment in which the paper feeding device 1 is installed from a sensor (not shown) in addition to the paper information (or instead of the paper information), and may move or adjust the suction amount of the left suction source 53, the suction amount of the right suction source 63, the suction amount of the center upper suction mechanism 30, and the blowing amount of the floating air blowing mechanism 40 based on the environmental information by using the left and right separation suction units 51 and 61.
The paper detection sensor 90 is disposed on the upper surface of the loading table 11 or beside the paper P (on either the front, rear, left, or right), for example. The paper detection sensor 90 is an example of a medium detection sensor that detects the paper P (presence or absence of the paper P) loaded on the loading table 11. The sheet detection sensor 90 irradiates detection light above the loading table 11, for example, and detects whether or not a sheet exists outside the uppermost sheet P1 from its reflected light.
Next, the printing apparatus 101 will be explained.
The printing device 101 includes a printing unit 110, a conveying unit 120, a1 st paper feeding unit 130, a2 nd paper feeding unit 140, a3 rd paper feeding unit 150, a conveying roller pair 161 to a conveying roller pair 165, and a registration roller pair 166. In fig. 1, a conveyance path R extending from the paper feed device 1, the 1 st paper feed unit 130, the 2 nd paper feed unit 140, and the 3 rd paper feed unit 150 to the printing unit 110 is shown by a thick solid line.
The printing unit 110 includes, for example, a line-type inkjet head (japanese: ラインヘッド -type インクジェットヘッド), not shown, for each color used for printing. The printing method of the printing unit 110 may be a printing method other than the inkjet printing method.
The conveyance unit 120 is disposed so as to face the printing unit 110. The conveying unit 120 conveys the paper P by a conveyor belt while attracting the paper P, for example.
The 1 st paper feeding unit 130 includes a paper feeding tray 131, a scraping roller 132, and a pickup roller 133, the 2 nd paper feeding unit 140 includes a paper feeding tray 141, a scraping roller 142, and a pickup roller 143, and the 3 rd paper feeding unit 150 includes a paper feeding tray 151, a scraping roller 152, and a pickup roller 153
A plurality of sheets P are loaded on the paper feed trays 131, 141, and 151.
The scraping roller 132 is a discharging roller that discharges and conveys the uppermost sheet P of the plurality of sheets P stacked on the sheet feeding tray 131, the scraping roller 142 is a discharging roller that discharges and conveys the uppermost sheet P of the plurality of sheets P stacked on the sheet feeding tray 141, and the scraping roller 152 is a discharging roller that discharges and conveys the uppermost sheet P of the plurality of sheets P stacked on the sheet feeding tray 151.
The pickup roller 133 conveys the sheet P fed by the scraping roller 132 to the conveying path R, the pickup roller 143 conveys the sheet P fed by the scraping roller 142 to the conveying path R, and the pickup roller 153 conveys the sheet P fed by the scraping roller 152 to the conveying path R.
The conveying roller pair 161 to 165 are disposed in the conveying path R from the 1 st paper feeding unit 130, the 2 nd paper feeding unit 140, and the 3 rd paper feeding unit 150 to the registration roller pair 166.
The sheets P fed from the sheet feeding device 1, the 1 st sheet feeding unit 130, the 2 nd sheet feeding unit 140, and the 3 rd sheet feeding unit 150 abut on the registration roller pair 166. Thereby, the skew of the sheet P is corrected.
The paper P printed by the printing unit 110 is transported to a paper discharge table, not shown, and loaded on the paper discharge table.
The paper feeding operation of the paper feeding device 1 will be described below with reference to fig. 4 and 5A to 5C.
The control unit 71 shown in fig. 3 receives a signal for starting the paper feeding operation from the control unit of the printing apparatus 101, for example, and thereby performs each process of the flowchart shown in fig. 4.
First, the controller 71 starts the central upper suction mechanism 30 to suck the central upper suction air a1 and the floating air blowing mechanism 40 to blow the floating air a2 (step S1). Further, the control section 71 starts the suction of the left separation suction air a11 by the left separation suction section 51, the suction of the right separation suction air a21 by the right separation suction section 61, the suction of the left upper suction air a12 by the left upper suction section 52, and the suction of the right upper suction air a22 by the right suction source 53 and the right suction source 63 by the right upper suction section 62 by control (step S1).
As shown in fig. 2, the floating air a2 is blown out by the floating air blowing mechanism 40 to float the paper P of about 10 sheets including the uppermost paper P1 and the second paper P2.
Next, the control unit 71 repeatedly determines whether or not there is a paper feed stop request (step S2) and a paper feed request (step S3) from the control unit of the printing apparatus 101.
When the paper feed request is received (yes in step S3), the control unit 71 determines whether or not the levitation air a2 is being blown out by the levitation-air blowing mechanism 40 (step S4).
When the levitation air a2 stops (yes in step S4), the controller 71 causes the levitation-air blowing mechanism 40 to blow the levitation air a2 (step S5).
Next, the control section 71 determines whether or not the uppermost sheet P1 is adsorbed on the conveyor belt 21 by the suction of the center upper suction air a1 by the center upper suction mechanism 30, for example, based on a predetermined time such as the conveyance timing (step S6).
Further, as shown in fig. 5A, before the uppermost sheet P1 is adsorbed to the conveying belt 21, the left upper suction portion 52, and the right upper suction portion 62, the suction amount of the left separation suction air a11 sucked out by the left separation suction portion 51 and the suction amount of the right separation suction air a21 sucked out by the right separation suction portion 61 are smaller than the suction amounts of the left upper suction air a12 sucked out by the left upper suction portion 52 and the right upper suction air a22 sucked out by the right upper suction portion 62.
On the other hand, as shown in fig. 5B, when the uppermost sheet P1 is sucked onto the conveyor belt 21, the left upper suction portion 52, and the right upper suction portion 62, the suction amount of the left upper suction air a12 sucked out by the left upper suction portion 52 and the suction amount of the right upper suction air a22 sucked out by the right upper suction portion 62 become small. Therefore, if the suction amount of the left suction source 53 or the suction amount of the right suction source 63 is constant, the suction amount of the left separation suction air a11 sucked out by the left separation suction portion 51 and the suction amount of the right separation suction air a21 sucked out by the right separation suction portion 61 increase.
Thereby, as shown in fig. 5C, the left separation suction portion 51 and the right separation suction portion 61 can reliably suck the second sheet P2.
When determining that the uppermost sheet P1 is attracted to the conveyor belt 21 (step S6: yes), the control unit 71 stops blowing of the floating air a2 by the floating air blowing mechanism 40 (step S7). Further, the control section 71 starts to cause the conveyance mechanism 20 to convey the uppermost sheet P1 by the drive control of the conveyance drive section 82 (step S8).
At this time, since the uppermost sheet P1 is attracted to the center upper suction mechanism 30, the left upper suction portion 52, and the right upper suction portion 62, and the second sheet P2 is attracted to the left separation suction portion 51 and the right separation suction portion 61, the uppermost sheet P1 and the second sheet P2 are separated, and only the uppermost sheet P1 is conveyed in the conveying direction D. After the uppermost sheet P1 is conveyed by a predetermined amount, the driving of the conveyance mechanism 20 by the conveyance drive section 82 is stopped.
Next, the control portion 71 determines whether or not the following sheet successive to the uppermost sheet P1, that is, the sheet P other than the uppermost sheet P1 (at least the second sheet P2) is detected by the sheet detection sensor 90 (step S9).
When the control section 71 determines that the sheet P is loaded on the loading table 11 in addition to the uppermost sheet P1 (yes in step S9), the control section 71 returns the process to step S2.
When the control section 71 determines that no sheet P is loaded on the loading table 11 other than the uppermost sheet P1 (no in step S9), the control section 71 closes the left separation suction gate 51a to close the suction path of the left separation suction section 51 and closes the right separation suction gate 61a to close the suction path of the right separation suction section 61 (step S10), and the process returns to step S2.
When the control section 71 receives the paper feed stop request from the control section of the printing apparatus 101 (yes in step S2), when the conveyance mechanism 20 continues conveyance, the control section 71 controls the conveyance driving section 82 to stop the conveyance mechanism 20, and the control section 71 stops the suction of the center upper suction air a1 by the center upper suction mechanism 30, the blowing of the floating air a2 by the floating air blowing mechanism 40, the suction of the left side separation suction air a11 by the left side separation suction section 51, the suction of the right side separation suction air a21 by the right side separation suction section 61, the suction of the left side upper suction air a12 by the left side upper suction section 52, and the suction of the right side upper suction air a22 by the right side upper suction section 62 (step S11). Then, the control unit 71 ends the processing shown in fig. 4.
In the present embodiment described above, the paper feeding device 1, which is an example of the medium feeding device, includes: a loading table 11 on which a plurality of sheets P, which is an example of a plurality of media, are loaded; a conveyance mechanism 20 that conveys an uppermost sheet P1 of the plurality of sheets P loaded on the loading table 11; a central upper suction mechanism 30, a left upper suction portion 52, and a right upper suction portion 62, which are examples of upper suction portions that suck the uppermost sheet P1 upward and cause the uppermost sheet P1 to be attracted to the conveyance mechanism 20; and a left-side separating suction section 51 and a right-side separating suction section 61 (which are an example of separating suction sections) which suck an example of other medium, i.e., the second sheet P2, located at the lower portion of the uppermost sheet P1 to separate the sheet P2 from the uppermost sheet P1.
By thus causing the left and right separation suction portions 51 and 61 to suck the second sheet P2, the second sheet P2 and the uppermost sheet P1 can be separated. Therefore, the second sheet P2 and the uppermost sheet P1 can be separated without deforming the uppermost sheet P1. This can prevent the occurrence of: the uppermost sheet P1 comes into contact with the conveyance path, a gate or the like provided on the conveyance path for the purpose of preventing overlapped conveyance, causing a conveyance jam. Further, by sucking the second sheet P2 by the left-side separation suction unit 51 and the right-side separation suction unit 61, the second sheet P2 and the uppermost sheet P1 can be stably separated regardless of the kind of the sheet P, such as thick paper or thin paper. Therefore, according to the present embodiment, the uppermost sheet P1 loaded on the loading table 11 can be easily separated from the second sheet P2 (other sheets P) and the sheets can be easily fed.
In addition, in the present embodiment, the left separation suction portion 51 and the right separation suction portion 61 suck the second sheet P2 at the end portions of the sheet P in the width direction (left-right direction) orthogonal to the conveying direction D of the conveying mechanism 20. The upper suction portion that sucks the uppermost sheet P1 upward to cause the uppermost sheet P1 to be sucked onto the conveying mechanism 20 includes, at a position closer to the end portion side than the center in the width direction (left-right direction) of the sheet P, a left upper suction portion 52 and a right upper suction portion 62 as an example of a side upper suction portion that sucks the uppermost sheet P1 upward, and the sheet feeding device 1 further includes: a left suction source 53 and a right suction source 63, which are one example of suction sources, the left suction source 53 sucking air by means of both the left separation suction portion 51 and the left upper suction portion 52, the right suction source 63 sucking air by means of both the right separation suction portion 61 and the right upper suction portion 62; and a left suction channel 54 and a right suction channel 64, which are examples of suction channels, the left suction channel 54 connecting both the left separation suction unit 51 and the left upper suction unit 52 to the left suction source 53, and the right suction channel 64 connecting both the right separation suction unit 61 and the right upper suction unit 62 to the right suction source 63. Thus, with the left suction source 53, after the left upper suction portion 52 sucks the uppermost sheet P1, the amount of suction (left separation suction air a11) by the left separation suction portion 51 that sucks the second sheet P2 increases, and therefore, the second sheet P2 is easily sucked. Likewise, with respect to the right suction source 63, after the right upper suction portion 62 sucks the uppermost sheet P1, the amount of suction (right separation suction air a21) by which the right separation suction portion 61 sucks the second sheet P2 increases, and therefore, the second sheet P2 is easily sucked.
In addition, in the present embodiment, the paper feeding device 1 further includes: a paper detection sensor 90, which is an example of a medium detection sensor, for detecting the paper P loaded on the loading table 11; a left separation suction shutter 51a and a right separation suction shutter 61a, which are examples of shutters, the left separation suction shutter 51a closing a suction path of the left separation suction section 51 in an openable and closable manner, the right separation suction shutter 61a closing a suction path of the right separation suction section 61 in an openable and closable manner; and a control portion 71, which is an example of a shutter control portion, and which controls the left-side separation suction shutter 51a and the right-side separation suction shutter 61a to close the suction path of the left-side separation suction portion 51 and the suction path of the right-side separation suction portion 61 when the second sheet P2 is not detected by the sheet detection sensor 90. This can prevent the occurrence of: in the case where the sheet P loaded on the loading table 11 is only the uppermost sheet P1, the left and right separation suction portions 51 and 61 suck the uppermost sheet P1, thereby causing the uppermost sheet P1 to be difficult to be sucked by the central upper suction mechanism 30, the left upper suction portion 52, and the right upper suction portion 62.
In addition, in the present embodiment, the paper feeding device 1 further includes: a left suction portion moving member 83 and a right suction portion moving member 84, which are examples of moving members, the left suction portion moving member 83 moving the left separation suction portion 51, the right suction portion moving member 84 moving the right separation suction portion 61; and a control unit 71 as an example of a moving member control unit, wherein the control unit 71 controls the left suction unit moving member 83 and the right suction unit moving member 84 to move the left separation suction unit 51 and the right separation suction unit 61 based on sheet information as an example of medium information of the plurality of sheets P loaded on the loading table 11. Therefore, the interval between the left separation suction portion 51 and the left upper suction portion 52 and the interval between the right separation suction portion 61 and the right upper suction portion 62 can be adjusted according to the paper information such as the size and the type of the paper P. For example, as the size of the sheet P increases or the weight per unit area of the sheet P increases (thick paper or the like), the weight of the sheet P increases, and therefore, the left separation suction portion 51 and the right separation suction portion 61 are moved upward, and the interval between the left separation suction portion 51 and the left upper suction portion 52 and the interval between the right separation suction portion 61 and the right upper suction portion 62 are narrowed, so that the left separation suction portion 51 and the right separation suction portion 61 can easily suction the second sheet P2.
The present invention is not limited to the above-described embodiments, and constituent elements can be modified and embodied in the implementation stage without departing from the scope of the present invention. In addition, various inventions can be formed by appropriate combinations of a plurality of constituent elements disclosed in the above embodiments. For example, all the constituent elements shown in the embodiments may be appropriately combined. It goes without saying that various modifications and applications can be made without departing from the scope of the invention. Hereinafter, the means described in the claims at the time of the original application of the present application will be described.
(technical means 1)
A medium supplying apparatus, characterized in that,
the medium supply device includes:
a loading table that loads a plurality of media;
a conveying mechanism that conveys an uppermost medium among the plurality of media loaded on the loading table;
an upper suction unit configured to suck the uppermost medium to the transport mechanism by sucking the uppermost medium upward; and
a separation suction portion that sucks the other medium located in a lower portion of the uppermost medium to separate the other medium from the uppermost medium.
(technical means 2)
The medium supplying apparatus according to claim 1, wherein,
the separation suction section sucks the other medium at an end portion of the medium in a width direction orthogonal to a conveyance direction in which the medium is conveyed by the conveyance mechanism,
the upper suction portion has a side upper suction portion that sucks the uppermost medium upward at a position closer to an end portion side than a center of the medium in the width direction,
the medium supplying apparatus further includes:
a suction source that sucks air by means of both the separation suction portion and the side upper suction portion; and
and a suction flow path connecting both the separation suction unit and the upper side suction unit to the suction source.
(technical means 3)
The medium supplying apparatus according to claim 1 or 2, wherein,
the medium supplying apparatus further includes:
a medium detection sensor that detects the medium loaded on the loading table;
a shutter that closes a suction path of the separation suction unit so as to be openable and closable; and
and a shutter control unit that controls the shutter to close the suction path of the separation and suction unit when the other medium is not detected by the medium detection sensor.
(technical means 4)
The medium supplying apparatus according to any one of claims 1 to 3,
the medium supplying apparatus further includes:
a moving member that moves the separation suction section; and
a moving member control unit that controls the moving member to move the separation suction unit based on the medium information of the plurality of media loaded on the loading table.
Claims (5)
1. A medium supplying apparatus, characterized in that,
the medium supply device includes:
a loading table that loads a plurality of media;
a conveying mechanism that conveys an uppermost medium among the plurality of media loaded on the loading table;
an upper suction unit configured to suck the uppermost medium to the transport mechanism by sucking the uppermost medium upward; and
a separation suction portion that sucks the other medium located in a lower portion of the uppermost medium to separate the other medium from the uppermost medium.
2. The medium supplying apparatus according to claim 1,
the separation suction section sucks the other medium at an end portion of the medium in a width direction orthogonal to a conveyance direction in which the medium is conveyed by the conveyance mechanism,
the upper suction portion has a side upper suction portion that sucks the uppermost medium upward at a position closer to an end portion side than a center of the medium in the width direction,
the medium supplying apparatus further includes:
a suction source that sucks air by means of both the separation suction portion and the side upper suction portion; and
and a suction flow path connecting both the separation suction unit and the upper side suction unit to the suction source.
3. The medium supplying apparatus according to claim 1 or 2,
the medium supplying apparatus further includes:
a medium detection sensor that detects the medium loaded on the loading table;
a shutter that closes a suction path of the separation suction unit so as to be openable and closable; and
and a shutter control unit that controls the shutter to close the suction path of the separation suction unit when the other medium is not detected by the medium detection sensor.
4. The medium supplying apparatus according to claim 1 or 2,
the medium supplying apparatus further includes:
a moving member that moves the separation suction section; and
a moving member control unit that controls the moving member to move the separation suction unit based on the medium information of the plurality of media loaded on the loading table.
5. The medium supplying device according to claim 3,
the medium supplying apparatus further includes:
a moving member that moves the separation suction section; and
a moving member control unit that controls the moving member to move the separation suction unit based on the medium information of the plurality of media loaded on the loading table.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-219394 | 2018-11-22 | ||
| JP2018219394A JP7204284B2 (en) | 2018-11-22 | 2018-11-22 | Media feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111204600A true CN111204600A (en) | 2020-05-29 |
Family
ID=70780335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911004504.XA Pending CN111204600A (en) | 2018-11-22 | 2019-10-22 | Medium supply device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7204284B2 (en) |
| CN (1) | CN111204600A (en) |
Cited By (3)
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| CN113682852A (en) * | 2021-09-08 | 2021-11-23 | 合肥友高物联网标识设备有限公司 | Quick adsorption paging mechanism |
| CN114194879A (en) * | 2022-01-17 | 2022-03-18 | 陈在谋 | Open type paper separating device and method and paper processing production line |
| CN114834926A (en) * | 2022-07-06 | 2022-08-02 | 天津津亚电子有限公司 | Film uncovering and feeding device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2020083540A (en) | 2020-06-04 |
| JP7204284B2 (en) | 2023-01-16 |
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