US20040201167A1 - Paper-flattening device for a feeding apparatus and method of feeding a sheet of paper into a feeding apparatus - Google Patents
Paper-flattening device for a feeding apparatus and method of feeding a sheet of paper into a feeding apparatus Download PDFInfo
- Publication number
- US20040201167A1 US20040201167A1 US10/820,376 US82037604A US2004201167A1 US 20040201167 A1 US20040201167 A1 US 20040201167A1 US 82037604 A US82037604 A US 82037604A US 2004201167 A1 US2004201167 A1 US 2004201167A1
- Authority
- US
- United States
- Prior art keywords
- paper
- feeding apparatus
- spindle member
- supporting tray
- feeding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2220/00—Function indicators
- B65H2220/09—Function indicators indicating that several of an entity are present
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/512—Changing form of handled material
- B65H2301/5125—Restoring form
- B65H2301/51256—Removing waviness or curl, smoothing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/60—Other elements in face contact with handled material
- B65H2404/66—Other elements in face contact with handled material rotating around an axis perpendicular to face of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/13—Parts concerned of the handled material
- B65H2701/131—Edges
- B65H2701/1315—Edges side edges, i.e. regarded in context of transport
Definitions
- the present invention relates to a paper-flattening device, more specifically to a paper-flattening device for a feeding apparatus.
- a conventional feeding apparatus such as a facsimile machine, a printer and a digital copier
- an automatic paper-feeding mechanism 2 for feeding a sheet of paper 4 into the feeding apparatus via a feeding mouth (not visible).
- the paper-feeding mechanism 2 includes a paper-supporting tray 10 , a roller shaft 7 , a feed-in roller 16 , a cam shaft 18 , first and second driving elements 14 , 20 , and a cam member 8 .
- the paper-supporting tray 10 is biased upwardly and defines an accommodating space 6 to receive a stack of paper 4 therein.
- the feed-in roller 16 is mounted on the roller shaft 7 so as to be disposed above the paper-supporting tray 10 for feeding the paper 4 .
- the cam shaft 18 is disposed adjacent to and parallel with the roller shaft 7 .
- the cam member 8 is fixed on the cam shaft 18 , and presses slidably the paper-supporting tray 10 against urging action thereof so as to define a paper feeding area 3 which is disposed below the feed-in roller 16 and which is in spatial communication with the feeding mouth.
- the cam member 8 is driven by the first driving element 14 upon actuated, which in turn, results in rotation of the cam member 8 in a non-circular path so as to permit upward movement of the paper-supporting tray 10 by virtue of the biasing action thereof, thereby raising the paper-supporting tray 10 so as to abut the paper 4 against the feed-in roller 16 .
- the paper 4 is fed into the feeding apparatus upon rotation of the feed-in roller 16 that is driven by the second driving element 20 .
- the object of the present invention is to provide a paper-flattening device for a feeding apparatus which is capable of slidably contacting the leading corners of advancing paper during feeding of papers into the feeding apparatus.
- a paper-flattening device of the present invention is used in a feeding apparatus that includes a paper-supporting tray, a roller shaft, and a feed-in roller mounted on the roller shaft above the paper-supporting tray for feeding sheets of paper into the feeding apparatus.
- the paper-flattening device accordingly includes: a stationary seat unit adapted to be mounted on the feeding apparatus adjacent to the paper-supporting tray; a spindle member disposed rotatably in the stationary seat unit, and having a top end projecting upwardly from the stationary seat unit; an arm member fixed on the top end of the spindle member for co-rotation therewith, projecting transversely from the spindle member, the arm member being adapted to extend over the paper-supporting tray so as to unfold the paper; and a cam unit disposed between and coupling the seat unit and the spindle member in such a manner that rotation of the spindle member in a first direction results in movement of the spindle member together with the arm member to an upper position, in which the arm member is moved away from the paper, and that rotation of the spindle member in a second direction opposite to the first direction results in movement of the spindle member together with the arm member to a lower position, in which the arm member is moved toward the paper.
- FIG. 1(A) is a perspective view of a conventional feeding apparatus provided with an automatic paper-feeding mechanism
- FIG. 1(B) is an enlarged view, illustrating how a paper-supporting tray of the conventional feeding apparatus is raised upward by virtue of movement of a cam member employed therein;
- FIG. 2(A) is a perspective view of the preferred embodiment of a paper-flattening device according to the present invention.
- FIG. 2(B) is an exploded view of the preferred embodiment of the paper-flattening device according to the present invention.
- FIG. 3 is an enlarged perspective view of the preferred embodiment of the paper-flattening device according to the present invention.
- FIG. 4(A) is a side view of a first transmission unit employed in the preferred embodiment
- FIG. 4(B) is a side view of a second transmission unit employed in the preferred embodiment
- FIG. 5 illustrates how the preferred embodiment is mounted on a paper feeding apparatus
- FIG. 6 is a block diagram, illustrating connection among a sensor, a motor and the transmission unit of the preferred embodiment.
- a paper-flattening device 30 is mounted on a feeding apparatus 90 (see FIG. 5), such as a digital copier, and includes a stationary seat unit 36 , a spindle member 32 , a cam unit, and two driven shafts 38 .
- the feeding apparatus 90 defines a feeding mouth (not visible), and includes a paper-supporting tray 93 for holding of papers 80 thereon, a roller shaft 91 , and a feed-in roller 92 mounted on the roller shaft 91 above the tray 93 for feeding sheets of paper 80 into the feeding apparatus 90 via the feeding mouth.
- the stationary seat unit 36 includes a pair of tubular seats 36 ′′ which are mounted respectively on two opposite sides of the tray 93 .
- the spindle member 32 includes a pair of spindles 32 ′′ that are disposed rotatably and respectively in the tubular seats 32 ′′ and that have two top ends projecting upwardly and respectively from the tubular seats 36 ′′.
- the arm member 34 includes a pair of arms 34 ′′ that are fixed respectively to the top ends of the spindles 32 ′′ for co-rotation therewith, and that project transversely and respectively from the spindles 32 ′′.
- the arms 34 ′′ can extend over the paper-supporting tray 93 so as to press slidably against the corners 86 (see FIG. 5) of the paper 80 .
- the cam unit is disposed between and couples the stationary unit 36 and the spindle member 32 , and includes a cam in the form of a protrusion 52 , and a helical groove 44 .
- the protrusion 52 is mounted on an inner surface of the respective tubular seat 36 ′′.
- the helical groove 44 is formed on an outer surface of the respective spindle 32 ′′.
- the protrusion 52 of each of the tubular seats 32 ′′ slidably engages the helical groove 44 in each of the spindle 32 ′′ in such a manner that rotation of the spindles 32 ′′ in a first direction results in movement of the spindles 32 ′′ together with the arms 34 ′′ to an upper position 82 (see FIG.
- Each of the driven shafts 38 engages and drives the respective spindle 32 ′′ to rotate in the first and second directions upon being driven.
- a transmission unit 76 is used for connecting the respective driven shaft 38 and the feed-in roller 92 (see FIG. 5), and includes a bevel gear 60 , a driving pinion 88 , a driven gear 62 , a first transmission gear 66 , and a second transmission gear 74 .
- the bevel gear 60 is fixed co-axially on the driven shaft 38 .
- the driving pinion 88 is mounted securely on one end of the roller shaft 91 .
- the driven gear 62 is disposed adjacent to and meshes the bevel gear 60 .
- the first transmission gear 66 is co-axially associated with the driven gear 62 .
- the second transmission gear 74 is disposed between and meshing with the first transmission gear 66 and the driving pinion 88 , thus rotation of the feed-in roller 92 is synchronously transmitted to the respective driven shaft 38 .
- an alternate transmission unit 76 is used for connecting the respective driven shaft 38 and the feed-in roller 92 (see FIG. 5), and includes a bevel gear 60 , a driving pinion 88 , a driven gear 62 , a transmission gear 66 , and a toothed belt 78 .
- the bevel gear 60 is fixed co-axially on the driven shaft 38 .
- the driving pinion 88 is mounted securely on one end of the roller shaft 91 .
- the driven gear 62 is disposed adjacent to and meshes the bevel gear 60 .
- the transmission gear 66 is associated co-axially with the driven gear 62 .
- the toothed belt 78 is trained on the transmission gear 66 and the driving pinion 88 , thus rotation of the feed-in roller 92 is synchronously transmitted to the respective driven shaft 38 .
- a motor (M) is provided in order to drive the roller shaft 91 via the sensor (S), and is mechanically coupled with the transmission unit 72 ( 78 ).
- the sensor (S) is connected electrically to the motor (M) to provide a first signal to cause the motor (M) to rotate in a third direction, and a second signal to cause the motor (M) to rotate in a fourth direction opposite to the third direction.
- the first signal is produced by the sensor (S) upon sensing presence of and approach of the paper 80 toward the feed-in roller 92 , thereby driving the feed-in roller 92 in a clockwise direction such that the arms 34 ′′ are moved to the lower position 84 (see FIG.
- the second signal is produced upon sensing finishing of paper feeding operation and absence of the paper 80 in the paper-supporting tray 93 , thereby driving the feed-in roller 92 in a counter-clockwise direction such that the arms 34 ′′ are moved to the upper position 82 (see FIG. 5 at 82 ).
- each of the spindles 32 ′′ has an inner surface formed with a pair of axially extending grooves 40 , 42 .
- Each of the driven shafts 38 has two diametrically disposed engaging tongues 54 , 56 engaging the grooves 40 , 42 in a respective one of the spindles 32 ′′ so as to co-rotate therewith.
- the outer surface of each of the spindles 32 is further formed with a short axial groove 46 at its lower end thereof.
- the short axial groove 46 is in spatial communication with the respective helical groove 44 so as to facilitate insertion of the respective protrusion 52 into the helical groove 44 during the assembly of the paper-flattening device 30 of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
- The present invention relates to a paper-flattening device, more specifically to a paper-flattening device for a feeding apparatus.
- Referring to FIGS.1(A) and 1(B), a conventional feeding apparatus (such as a facsimile machine, a printer and a digital copier) is provided with an automatic paper-
feeding mechanism 2 for feeding a sheet ofpaper 4 into the feeding apparatus via a feeding mouth (not visible). - As illustrated, the paper-
feeding mechanism 2 includes a paper-supportingtray 10, aroller shaft 7, a feed-inroller 16, acam shaft 18, first andsecond driving elements cam member 8. The paper-supportingtray 10 is biased upwardly and defines anaccommodating space 6 to receive a stack ofpaper 4 therein. The feed-inroller 16 is mounted on theroller shaft 7 so as to be disposed above the paper-supportingtray 10 for feeding thepaper 4. Thecam shaft 18 is disposed adjacent to and parallel with theroller shaft 7. Thecam member 8 is fixed on thecam shaft 18, and presses slidably the paper-supportingtray 10 against urging action thereof so as to define apaper feeding area 3 which is disposed below the feed-inroller 16 and which is in spatial communication with the feeding mouth. - The
cam member 8 is driven by thefirst driving element 14 upon actuated, which in turn, results in rotation of thecam member 8 in a non-circular path so as to permit upward movement of the paper-supportingtray 10 by virtue of the biasing action thereof, thereby raising the paper-supportingtray 10 so as to abut thepaper 4 against the feed-inroller 16. Thepaper 4 is fed into the feeding apparatus upon rotation of the feed-inroller 16 that is driven by thesecond driving element 20. - One drawback of the aforesaid conventional feeding apparatus resides in that during the feeding operation, the leading corners of
paper 4 may turn upward and are folded due to sliding contact with two opposite sides of the paper-supportingtray 10. The situation is aggravated in the event a used paper having one side already printed is fed into the feeding apparatus. - The object of the present invention is to provide a paper-flattening device for a feeding apparatus which is capable of slidably contacting the leading corners of advancing paper during feeding of papers into the feeding apparatus.
- A paper-flattening device of the present invention is used in a feeding apparatus that includes a paper-supporting tray, a roller shaft, and a feed-in roller mounted on the roller shaft above the paper-supporting tray for feeding sheets of paper into the feeding apparatus. The paper-flattening device accordingly includes: a stationary seat unit adapted to be mounted on the feeding apparatus adjacent to the paper-supporting tray; a spindle member disposed rotatably in the stationary seat unit, and having a top end projecting upwardly from the stationary seat unit; an arm member fixed on the top end of the spindle member for co-rotation therewith, projecting transversely from the spindle member, the arm member being adapted to extend over the paper-supporting tray so as to unfold the paper; and a cam unit disposed between and coupling the seat unit and the spindle member in such a manner that rotation of the spindle member in a first direction results in movement of the spindle member together with the arm member to an upper position, in which the arm member is moved away from the paper, and that rotation of the spindle member in a second direction opposite to the first direction results in movement of the spindle member together with the arm member to a lower position, in which the arm member is moved toward the paper.
- The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
- FIG. 1(A) is a perspective view of a conventional feeding apparatus provided with an automatic paper-feeding mechanism;
- FIG. 1(B) is an enlarged view, illustrating how a paper-supporting tray of the conventional feeding apparatus is raised upward by virtue of movement of a cam member employed therein;
- FIG. 2(A) is a perspective view of the preferred embodiment of a paper-flattening device according to the present invention;
- FIG. 2(B) is an exploded view of the preferred embodiment of the paper-flattening device according to the present invention;
- FIG. 3 is an enlarged perspective view of the preferred embodiment of the paper-flattening device according to the present invention;
- FIG. 4(A) is a side view of a first transmission unit employed in the preferred embodiment;
- FIG. 4(B) is a side view of a second transmission unit employed in the preferred embodiment;
- FIG. 5 illustrates how the preferred embodiment is mounted on a paper feeding apparatus; and
- FIG. 6 is a block diagram, illustrating connection among a sensor, a motor and the transmission unit of the preferred embodiment.
- Referring to FIGS.2(A), 2(B), and 5, the preferred embodiment of a paper-
flattening device 30 according to the present invention is mounted on a feeding apparatus 90 (see FIG. 5), such as a digital copier, and includes astationary seat unit 36, aspindle member 32, a cam unit, and two drivenshafts 38. - As illustrated, the feeding apparatus90 (see FIG. 5) defines a feeding mouth (not visible), and includes a paper-supporting
tray 93 for holding ofpapers 80 thereon, aroller shaft 91, and a feed-inroller 92 mounted on theroller shaft 91 above thetray 93 for feeding sheets ofpaper 80 into thefeeding apparatus 90 via the feeding mouth. - The
stationary seat unit 36 includes a pair oftubular seats 36″ which are mounted respectively on two opposite sides of thetray 93. - The
spindle member 32 includes a pair ofspindles 32″ that are disposed rotatably and respectively in thetubular seats 32″ and that have two top ends projecting upwardly and respectively from thetubular seats 36″. - The
arm member 34 includes a pair ofarms 34″ that are fixed respectively to the top ends of thespindles 32″ for co-rotation therewith, and that project transversely and respectively from thespindles 32″. Thearms 34″ can extend over the paper-supportingtray 93 so as to press slidably against the corners 86 (see FIG. 5) of thepaper 80. - The cam unit is disposed between and couples the
stationary unit 36 and thespindle member 32, and includes a cam in the form of aprotrusion 52, and ahelical groove 44. Theprotrusion 52 is mounted on an inner surface of the respectivetubular seat 36″. Thehelical groove 44 is formed on an outer surface of therespective spindle 32″. Theprotrusion 52 of each of thetubular seats 32″ slidably engages thehelical groove 44 in each of thespindle 32″ in such a manner that rotation of thespindles 32″ in a first direction results in movement of thespindles 32″ together with thearms 34″ to an upper position 82 (see FIG. 5 at 82), in which thearms 34″ are moved away from thepaper 80, and that rotation of thespindles 32″ in a second direction opposite to the first direction results in movement of thespindles 32″ together with thearms 34″ to a lower position 84 (see FIG. 5 at 84), in which thearms 34″ are moved toward thepaper 80 and presses slidably against thepaper 80, thereby preventing folding and curling of thepaper 80 during the paper-feeding operation. The traveling length of thearms 34″ can be calculated as follow: in case the angular rotational angle of therespective spindles 32″ from the lower position to the upper position is (α), the angular moving length cause thereby is (X), the vertical length caused thereby is (Y), the angular length of thehelical groove 44 is L=(X2+Y2)1/2. Under this condition, the angle of thehelical groove 44 relative to the horizontal plane is θ=tan−1 [X/Y]. - Each of the driven
shafts 38 engages and drives therespective spindle 32″ to rotate in the first and second directions upon being driven. - Referring to FIGS. 3 and 4(A), in order to drive the respective driven
shaft 38, atransmission unit 76 is used for connecting the respective drivenshaft 38 and the feed-in roller 92 (see FIG. 5), and includes abevel gear 60, adriving pinion 88, a drivengear 62, afirst transmission gear 66, and asecond transmission gear 74. Thebevel gear 60 is fixed co-axially on the drivenshaft 38. Thedriving pinion 88 is mounted securely on one end of theroller shaft 91. The drivengear 62 is disposed adjacent to and meshes thebevel gear 60. Thefirst transmission gear 66 is co-axially associated with the drivengear 62. Thesecond transmission gear 74 is disposed between and meshing with thefirst transmission gear 66 and thedriving pinion 88, thus rotation of the feed-inroller 92 is synchronously transmitted to the respective drivenshaft 38. - Referring to FIGS. 3 and 4(B), an
alternate transmission unit 76 is used for connecting the respective drivenshaft 38 and the feed-in roller 92 (see FIG. 5), and includes abevel gear 60, adriving pinion 88, a drivengear 62, atransmission gear 66, and atoothed belt 78. Thebevel gear 60 is fixed co-axially on the drivenshaft 38. Thedriving pinion 88 is mounted securely on one end of theroller shaft 91. The drivengear 62 is disposed adjacent to and meshes thebevel gear 60. Thetransmission gear 66 is associated co-axially with the drivengear 62. Thetoothed belt 78 is trained on thetransmission gear 66 and thedriving pinion 88, thus rotation of the feed-inroller 92 is synchronously transmitted to the respective drivenshaft 38. - Referring to FIG. 6, a motor (M) is provided in order to drive the
roller shaft 91 via the sensor (S), and is mechanically coupled with the transmission unit 72 (78). The sensor (S) is connected electrically to the motor (M) to provide a first signal to cause the motor (M) to rotate in a third direction, and a second signal to cause the motor (M) to rotate in a fourth direction opposite to the third direction. The first signal is produced by the sensor (S) upon sensing presence of and approach of thepaper 80 toward the feed-inroller 92, thereby driving the feed-inroller 92 in a clockwise direction such that thearms 34″ are moved to the lower position 84 (see FIG. 5 at 84), where thearms 34″ slidably contact twoopposite corners 86 of thepaper 80 being fed into thefeeding apparatus 90, thereby preventing folding and curling of thepaper 80 during the paper-feeding operation. In the similar manner, the second signal is produced upon sensing finishing of paper feeding operation and absence of thepaper 80 in the paper-supportingtray 93, thereby driving the feed-inroller 92 in a counter-clockwise direction such that thearms 34″ are moved to the upper position 82 (see FIG. 5 at 82). - Referring to FIG. 2(B) again, each of the
spindles 32″ has an inner surface formed with a pair of axially extendinggrooves shafts 38 has two diametrically disposedengaging tongues grooves spindles 32″ so as to co-rotate therewith. The outer surface of each of thespindles 32 is further formed with a shortaxial groove 46 at its lower end thereof. The shortaxial groove 46 is in spatial communication with the respectivehelical groove 44 so as to facilitate insertion of therespective protrusion 52 into thehelical groove 44 during the assembly of the paper-flattening device 30 of the present invention. - As is understood by a person skilled in the art, the foregoing preferred embodiment of the present invention is an illustration of the present invention rather than limiting thereon. It is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structure.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92108433A TW575517B (en) | 2003-04-11 | 2003-04-11 | Paper poking apparatus and paper feeding method used in paper feeding mechanism |
TW92108433 | 2003-04-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040201167A1 true US20040201167A1 (en) | 2004-10-14 |
Family
ID=32734638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/820,376 Abandoned US20040201167A1 (en) | 2003-04-11 | 2004-04-08 | Paper-flattening device for a feeding apparatus and method of feeding a sheet of paper into a feeding apparatus |
Country Status (2)
Country | Link |
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US (1) | US20040201167A1 (en) |
TW (1) | TW575517B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114393817A (en) * | 2021-12-29 | 2022-04-26 | 宁波荣华数码印刷设备有限公司 | Paper laminating machine |
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2003
- 2003-04-11 TW TW92108433A patent/TW575517B/en not_active IP Right Cessation
-
2004
- 2004-04-08 US US10/820,376 patent/US20040201167A1/en not_active Abandoned
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US6647593B2 (en) * | 2000-11-13 | 2003-11-18 | Seiko Instruments Inc. | Hinge unit of mounting strap |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114393817A (en) * | 2021-12-29 | 2022-04-26 | 宁波荣华数码印刷设备有限公司 | Paper laminating machine |
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TW200420485A (en) | 2004-10-16 |
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