WO2007136242A1 - Method and device for unstacking a stack of flexible sheets - Google Patents

Method and device for unstacking a stack of flexible sheets Download PDF

Info

Publication number
WO2007136242A1
WO2007136242A1 PCT/NL2006/000259 NL2006000259W WO2007136242A1 WO 2007136242 A1 WO2007136242 A1 WO 2007136242A1 NL 2006000259 W NL2006000259 W NL 2006000259W WO 2007136242 A1 WO2007136242 A1 WO 2007136242A1
Authority
WO
WIPO (PCT)
Prior art keywords
stack
sheet
compartment
suction cups
top sheet
Prior art date
Application number
PCT/NL2006/000259
Other languages
French (fr)
Inventor
Roye Weeks
Terje Gulbrandsen
Jan Gijsbert Kranstauber
Original Assignee
Buhrs-Zaandam B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Buhrs-Zaandam B.V. filed Critical Buhrs-Zaandam B.V.
Priority to PCT/NL2006/000259 priority Critical patent/WO2007136242A1/en
Priority to ARP070102238A priority patent/AR061116A1/en
Publication of WO2007136242A1 publication Critical patent/WO2007136242A1/en

Links

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
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/60—Loosening articles in piles
    • 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
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0833—Suction grippers separating from the top of pile and acting on the front part of the articles relatively to the final separating direction
    • 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
    • B65H3/42—Separating articles from piles by two or more separators mounted for movement with, or relative to, rotary or oscillating bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/216—Orientation, e.g. with respect to direction of movement

Definitions

  • the invention relates to device and a method for unstacking a stack of flexible inserts, such as sheets.
  • sheet feeders Such devices are known as sheet feeders.
  • sheet feeders a stack of sheets is placed in a stack compartment and the sheets are withdrawn from the bottom of the stack one by one.
  • drum feeders and table feeders Known in the art are so-called drum feeders and table feeders.
  • WO2006/002098 corresponding to US2005/0285323 of which the subject matter is incorporated herein by reference discloses a sheet handling apparatus having a singulater adapted to separate the individual inserts from a stack or bundle of inserts, such as a stack of sheets.
  • a stack of inserts is lifted by a lift and brought to the singulator which separates individual sheet from the top of the stack.
  • the present invention aims to improve the device disclosed in WO'098 and US'323 in order to obtain an even more reliable separation of the inserts, such as sheet, from the top of a stack of inserts.
  • the invention provides a device for unstacking a stack of flexible sheets, comprising:
  • a stack carrier having a stack compartment for holding a stack, the stack compartment having a discharge side via which said sheet can be discharged from the compartment;
  • a lifting member which is positioned at the stack compartment discharge side and which is arranged for lifting a limited number of sheets at the top of the stack at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet of the limited number of sheet is brought into engagement with at least one of the rotating suction cups, the lifting member allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups.
  • the invention also provides a method for unstacking a stack of flexible sheet, the method comprising:
  • - actuating the lifting member for lifting a limited number of sheet at the top of the stack at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet of the limited number of sheet is brought into engagement with at least one of the rotating suction cups; - actuating the lifting member for allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups;
  • a sheet should be understood in a broad manner: i.e., a sheet can be any flexible free standing insert, such as a single sheet of paper, two tab pages or many sheets bound together or encased in a plastic or paper bag.
  • Allowing said downward movement can be accomplished by disengaging the lifting elements from the number of lifted sheets after the top sheet has been brought into engagement with at least one of the rotating suction cups.
  • the lifting member may comprise a lifting plate which is rotatably mounted around a lifting plate rotation axis, which axis extends parallel to the suction cup axis and is adjacent the discharge side of the stack compartment.
  • a lifting plate rotation axis which axis extends parallel to the suction cup axis and is adjacent the discharge side of the stack compartment.
  • the stack compartment has a moveable bottom on which the stack can be placed, wherein the position of the bottom is controlled such that a top sheet of the stack is positioned slightly below the path which the suction cups follow when they rotate around the suction cup axis and such that the lifting member can engage a limited number of sheet at the top of the stack.
  • Such a movable bottom can for example be controlled by a control which is connected to a sensor which detects the position of the top side of the stack.
  • the number of suction cups and the lifting member are moveably arranged in a vertical direction and that the relative distance between the top side of the stack on one hand and a rotation axis of the suction cups and the position of the lifting member on the other hand is kept constant.
  • Figure 1 schematically shows a side elevational view of an embodiment of the device; figure 2 shows a similar view in a next stage of the unstacking process; figure 3 shows a further stage of the unstacking process; and figure 4 shows a similar view in yet a further stage of the unstacking process.
  • Figure 1 shows the stack carrier 1 with the stack compartment 2.
  • the stack compartment has a discharge side 3 via which sheet 4 from a stack S can be discharged from the compartment 2.
  • a number of suction cups 5 is provided and are rotatable around a horizontal suction cup axis 6.
  • the horizontal suction cup axis 6 extends above the stack S, i.e. above the stack compartment 2.
  • a lifting member 7 is provided adjacent the stack compartment discharge side 3.
  • the lifting member 7 of the shown embodiment comprises a lifting plate 7, in fact it comprises two lifting plates 7, 7', which is rotatably mounted around a lifting plate rotation axis 8, which axis extends parallel to the suction cup axis 6 adjacent the discharge side 3 of the stack compartment 2.
  • the stack compartment 2 has a moveable bottom 10 on which the stack S can be placed.
  • the position of the bottom 10 is controlled such that a top sheet 4T of the stack is positioned slightly below a path which the suction cups 5 follow when they rotate around the suction cup axis 6 and such that the lifting member 7 can engage a limited number of sheet 4 at the top of the stack S.
  • the position of the bottom can be regulated with an actuator 11 which is controlled by a control 12.
  • the control 12 is in this embodiment connected to a sensor 13 which senses the presence or absence of the top of the stack S and thus provide information to the control 12 such that the actuator 11 can be controlled to keep the stack S at the desired height.
  • the suction cups 5 are positioned on a cylindrical drum. Inside the drum is a suction chamber 14 which is connected to a vacuum source and which provides suction action to the suction cups 5 when these suction cups 5 pass the suction chamber 14. It is clear that along the length of the drum more than one array of suction cups can be provided. It is also clear that instead of a drum, other means can be used to support the suction cups 5, such as, e.g. arms which extend from a central shaft in a radical direction.
  • the lifting member 7 is arranged for lifting a limited number of sheets S at an edge 9 therefrom which is adjacent the stack compartment discharge side 3. As is clearly depicted in figure 2, the lifting member 7 effects that the top sheet 4T of the limited number of sheets that has been lifted is brought into engagement with at least one of the rotating suction cups 5.
  • the lifting member allows downward movement of the lifted sheets under the top sheet 4T after the top sheet 4T has been brought into engagement with at least one of the rotating suction cups 5.
  • the lifting member 7, for allowing said downward movement disengages the number of lifted sheets 4 after the top sheet 4T has been brought into engagement with at least one of the rotating suction cups 5.
  • the lifting member 7 is however a reliable and easy from a constructional point of view and the speed with which the downward movement is allowed is not limited by downward moving speed of the lifting member but only by the acceleration caused by gravity. The acceleration caused by gravity is sufficient to obtain a reliable sheet unstacking device. If necessary, a nozzle blowing air towards the discharge edges of the lifted sheets might be added to help the separation of the top sheet 4T from the underlying lifted sheets 4.
  • the friction between the top sheet 4T and the sheet underlying the top sheet 4T is greatly reduced which facilitates the discharge of the top sheet 4T in the discharge direction D as shown in figure 4.
  • the transportation of the top sheet 4T is effected by the rotating movement of the suction cups 5 around suction cup axis 6.
  • the lifting member will again lift a limited number of sheets as shown in figure 2 and the above described procedure will be repeated.
  • the control 12 can provide a signal so that the operator knows that the unstacking device can be loaded with a new stack of sheets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

Device and method for unstacking a stack (5) of flexible sheets, comprising: - a stack carrier having a stack compartment for holding a stack; - a number of suction cups mounted rotatably around a horizontal suction cup axis, with which un uppermost sheet of the stack of sheets can be engaged and be transported in a discharge direction; - a lifting member (7) which is positioned at the stack compartment discharge side and which is arranged for lifting a limited number of sheet at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet (4T) of the limited number of sheet is brought into engagement with at least one of the rotating suction cups, the lifting member allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups.

Description

Title: Method and device for unstacking a stack of flexible sheets
The invention relates to device and a method for unstacking a stack of flexible inserts, such as sheets.
Such devices are known as sheet feeders. In known sheet feeders, a stack of sheets is placed in a stack compartment and the sheets are withdrawn from the bottom of the stack one by one. Known in the art are so-called drum feeders and table feeders.
WO2006/002098 corresponding to US2005/0285323 of which the subject matter is incorporated herein by reference discloses a sheet handling apparatus having a singulater adapted to separate the individual inserts from a stack or bundle of inserts, such as a stack of sheets. In this known apparatus, a stack of inserts is lifted by a lift and brought to the singulator which separates individual sheet from the top of the stack.
The present invention aims to improve the device disclosed in WO'098 and US'323 in order to obtain an even more reliable separation of the inserts, such as sheet, from the top of a stack of inserts.
Accordingly, it is an object of the invention to provide a device for unstacking a stack of flexible sheets in which the chance that more than one sheet is discharged from the stack simultaneously is minimised.
To that end the invention provides a device for unstacking a stack of flexible sheets, comprising:
- a stack carrier having a stack compartment for holding a stack, the stack compartment having a discharge side via which said sheet can be discharged from the compartment;
- a number of suction cups mounted rotatably around a horizontal suction cup axis which extends above a stack in the stack compartment, with which an uppermost sheet of the stack of sheets can be engaged and be transported in a discharge direction;
- a lifting member which is positioned at the stack compartment discharge side and which is arranged for lifting a limited number of sheets at the top of the stack at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet of the limited number of sheet is brought into engagement with at least one of the rotating suction cups, the lifting member allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups.
The invention also provides a method for unstacking a stack of flexible sheet, the method comprising:
- providing a device according to the invention;
- placing a stack of sheet in the sheet compartment of the device; - rotating the suction cups around the suction cup rotation axis so that they follow a path;
- controlling the position of the bottom of the stack compartment such that a top sheet of the stack is positioned slightly below the path which the suction cups follow and such that the lifting member can engage a limited number of sheet at the top of the stack;
- actuating the lifting member for lifting a limited number of sheet at the top of the stack at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet of the limited number of sheet is brought into engagement with at least one of the rotating suction cups; - actuating the lifting member for allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups;
- discharging the top sheet from the stack compartment by the movement of the engaging suction cups in the discharge direction. By the lifting only a limited number of sheets with the lifting member, it is accomplished that pressure exerted by the top sheet on the suction cups is generally equal. Consequently, the deformation of the suction cups will be generally equal, which is desirable in view of a reliable suction action. The pressure exerted by the top sheet on the suction cups is generally equal because the limited number of sheets can easily deform and adapt to the contour of the respective suction cups.
By allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups, the friction between the top sheet and the sheets underlying the top sheet is dramatically reduced. Consequently, the chance that underlying sheets are discharged together with the top sheet is minimised.
It should be noted that in the context of the present invention the term "sheet" should be understood in a broad manner: i.e., a sheet can be any flexible free standing insert, such as a single sheet of paper, two tab pages or many sheets bound together or encased in a plastic or paper bag.
Allowing said downward movement can be accomplished by disengaging the lifting elements from the number of lifted sheets after the top sheet has been brought into engagement with at least one of the rotating suction cups.
Disengaging the number of lifted sheets is a simple and reliable manner for allowing the downward movement of the limited number of sheets underlying the top sheet. Gravity will immediately pull the underlying sheets in a downward direction thus facilitating the movement of the single top sheet in the discharge direction.
The lifting member may comprise a lifting plate which is rotatably mounted around a lifting plate rotation axis, which axis extends parallel to the suction cup axis and is adjacent the discharge side of the stack compartment. Such an embodiment of the lifting member is reliable in that it automatically can lift a limited number of sheets at a discharge end thereof by rotating the lifting plate with the free end thereof against the upper part of the stack at the discharge side of the stack. Further, the disengaging of the limited number of lifted sheets is automatically accomplished by rotating the lifting plate further.
It is preferable that the stack compartment has a moveable bottom on which the stack can be placed, wherein the position of the bottom is controlled such that a top sheet of the stack is positioned slightly below the path which the suction cups follow when they rotate around the suction cup axis and such that the lifting member can engage a limited number of sheet at the top of the stack.
Such a movable bottom can for example be controlled by a control which is connected to a sensor which detects the position of the top side of the stack.
Alternatively, it is also possible that the number of suction cups and the lifting member are moveably arranged in a vertical direction and that the relative distance between the top side of the stack on one hand and a rotation axis of the suction cups and the position of the lifting member on the other hand is kept constant.
Figure 1 schematically shows a side elevational view of an embodiment of the device; figure 2 shows a similar view in a next stage of the unstacking process; figure 3 shows a further stage of the unstacking process; and figure 4 shows a similar view in yet a further stage of the unstacking process.
Figure 1 shows the stack carrier 1 with the stack compartment 2. The stack compartment has a discharge side 3 via which sheet 4 from a stack S can be discharged from the compartment 2. A number of suction cups 5 is provided and are rotatable around a horizontal suction cup axis 6. The horizontal suction cup axis 6 extends above the stack S, i.e. above the stack compartment 2. A lifting member 7 is provided adjacent the stack compartment discharge side 3. The lifting member 7 of the shown embodiment comprises a lifting plate 7, in fact it comprises two lifting plates 7, 7', which is rotatably mounted around a lifting plate rotation axis 8, which axis extends parallel to the suction cup axis 6 adjacent the discharge side 3 of the stack compartment 2.
The stack compartment 2 has a moveable bottom 10 on which the stack S can be placed. The position of the bottom 10 is controlled such that a top sheet 4T of the stack is positioned slightly below a path which the suction cups 5 follow when they rotate around the suction cup axis 6 and such that the lifting member 7 can engage a limited number of sheet 4 at the top of the stack S. The position of the bottom can be regulated with an actuator 11 which is controlled by a control 12. The control 12 is in this embodiment connected to a sensor 13 which senses the presence or absence of the top of the stack S and thus provide information to the control 12 such that the actuator 11 can be controlled to keep the stack S at the desired height.
In the shown embodiment, the suction cups 5 are positioned on a cylindrical drum. Inside the drum is a suction chamber 14 which is connected to a vacuum source and which provides suction action to the suction cups 5 when these suction cups 5 pass the suction chamber 14. It is clear that along the length of the drum more than one array of suction cups can be provided. It is also clear that instead of a drum, other means can be used to support the suction cups 5, such as, e.g. arms which extend from a central shaft in a radical direction.
The lifting member 7 is arranged for lifting a limited number of sheets S at an edge 9 therefrom which is adjacent the stack compartment discharge side 3. As is clearly depicted in figure 2, the lifting member 7 effects that the top sheet 4T of the limited number of sheets that has been lifted is brought into engagement with at least one of the rotating suction cups 5.
As is clearly depicted in figure 3, the lifting member allows downward movement of the lifted sheets under the top sheet 4T after the top sheet 4T has been brought into engagement with at least one of the rotating suction cups 5. In this embodiment the lifting member 7, for allowing said downward movement, disengages the number of lifted sheets 4 after the top sheet 4T has been brought into engagement with at least one of the rotating suction cups 5.
It is clear that also another embodiment of the lifting member is possible which does not rotate about an axis but which makes a reciprocating movement in an upward and downward direction. The downward movement of the sheets underlying the top sheet 4T is then allowed by downward movement of the lifting member in stead of disengagement. The shown embodiment of the rotating lifting member 7 is however a reliable and easy from a constructional point of view and the speed with which the downward movement is allowed is not limited by downward moving speed of the lifting member but only by the acceleration caused by gravity. The acceleration caused by gravity is sufficient to obtain a reliable sheet unstacking device. If necessary, a nozzle blowing air towards the discharge edges of the lifted sheets might be added to help the separation of the top sheet 4T from the underlying lifted sheets 4.
As a consequence of the downward movement of the lifted sheets 4 underlying the top sheet 4T, the friction between the top sheet 4T and the sheet underlying the top sheet 4T is greatly reduced which facilitates the discharge of the top sheet 4T in the discharge direction D as shown in figure 4. The transportation of the top sheet 4T is effected by the rotating movement of the suction cups 5 around suction cup axis 6. After a top sheet 4T has been discharged, the lifting member will again lift a limited number of sheets as shown in figure 2 and the above described procedure will be repeated. As the height of the stack S gradually diminishes, the level of the bottom 10 will be gradually increased until the stack compartment 2 is completely emptied. After that, the control 12 can provide a signal so that the operator knows that the unstacking device can be loaded with a new stack of sheets.
The scope of invention is not limited to the shown embodiment but is defined by the claims.

Claims

Claims
1. Device for unstacking a stack of flexible sheets, comprising:
- a stack carrier having a stack compartment for holding a stack, the stack compartment having a discharge side via which said sheet can be discharged from the compartment; - a number of suction cups mounted rotatably around a horizontal suction cup axis which extends above a stack in the stack compartment, with which an uppermost sheet of the stack of sheets can be engaged and be transported in a discharge direction;
- a lifting member which is positioned at the stack compartment discharge side and which is arranged for lifting a limited number of sheets at the top of the stack at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet of the limited number of sheet is brought into engagement with at least one of the rotating suction cups, the lifting member allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups.
2. Device" according to claim 1, wherein the lifting member, for allowing said downward movement, disengages the number of lifted sheets after the top sheet has been brought into engagement with at least one of the rotating suction cups.
3. Device according to claim 1, wherein the lifting member comprises a lifting plate which is rotatably mounted around a lifting plate rotation axis, which axis extends parallel to the suction cup axis adjacent the discharge side of the stack compartment.
4. Device according to any of the preceding claims, wherein the stack compartment has a moveable bottom on which the stack can be placed, wherein the position of the bottom is controlled such that a top sheet of the stack is positioned slightly below the path which the suction cups follow when they rotate around the suction cup axis and such that the lifting member can engage a limited number of sheet at the top of the stack.
5. Method for unstacking a stack of flexible sheet, the method comprising:
- providing a device according to any one of the preceding claims;
- placing a stack of sheet in the sheet compartment of the device;
- rotating the suction cups around the suction cup rotation axis so that they follow a path; - controlling the position of the bottom of the stack compartment such that a top sheet of the stack is positioned slightly below the path which the suction cups follow and such that the lifting member can engage a limited number of sheet at the top of the stack;
- actuating the lifting member for lifting a limited number of sheet at the top of the stack at an edge therefrom which is adjacent the stack compartment discharge side, so that the top sheet of the limited number of sheet is brought into engagement with at least one of the rotating suction cups;
- actuating the lifting member for allowing downward movement of the lifted sheets under the top sheet after the top sheet has been brought into engagement with at least one of the rotating suction cups;
- discharging the top sheet from the stack compartment by the movement of the engaging suction cups in the discharge direction.
6. Method according to claim 5, wherein the lifting member, for allowing said downward movement, disengages the number of lifted sheets after the top sheet has been brought into engagement with at least one of the rotating suction cups.
7. Method according to claim 5, wherein the actuation of the lifting member is repeated after a previous top sheet has been discharged from the stack compartment.
8. Method according to claim 6, wherein the position of the bottom of the stack compartment is controlled continuously.
PCT/NL2006/000259 2006-05-23 2006-05-23 Method and device for unstacking a stack of flexible sheets WO2007136242A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/NL2006/000259 WO2007136242A1 (en) 2006-05-23 2006-05-23 Method and device for unstacking a stack of flexible sheets
ARP070102238A AR061116A1 (en) 2006-05-23 2007-05-23 A METHOD AND DEVICE TO DEAPILY A BATTERY OF FLEXIBLE LEAVES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2006/000259 WO2007136242A1 (en) 2006-05-23 2006-05-23 Method and device for unstacking a stack of flexible sheets

Publications (1)

Publication Number Publication Date
WO2007136242A1 true WO2007136242A1 (en) 2007-11-29

Family

ID=36764439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2006/000259 WO2007136242A1 (en) 2006-05-23 2006-05-23 Method and device for unstacking a stack of flexible sheets

Country Status (2)

Country Link
AR (1) AR061116A1 (en)
WO (1) WO2007136242A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105151766A (en) * 2015-09-22 2015-12-16 苏州富通高新材料科技股份有限公司 Sheet material separation and conveying device
CN106241439A (en) * 2016-09-29 2016-12-21 河南省新斗彩印刷有限公司 Semi-automatic die cutting machine automatic document feeder
WO2019072415A1 (en) * 2017-10-10 2019-04-18 Bobst Grenchen Ag Sheet feeder for a machine for processing material in sheet form, such as paper, cardboard or films

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885784A (en) * 1971-01-27 1975-05-27 Thomson Csf Document singling arrangement
EP0317232A2 (en) * 1987-11-16 1989-05-24 Tekmax Inc. Plate feed apparatus
WO1998039240A1 (en) * 1997-03-05 1998-09-11 Gelco International, L.L.C. Plate feeder apparatus
DE19943029A1 (en) * 1998-10-08 2000-04-13 Heidelberger Druckmasch Ag Paper handling system for use with printing machine loosens topmost sheet of paper from stack using sound source and side blower
EP1031523A2 (en) * 1998-04-08 2000-08-30 Tekmax Inc. Battery plate feeder having oscillating pick-up head
US20050285323A1 (en) * 2004-06-18 2005-12-29 Terje Gulbrandsen Sheet handling apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885784A (en) * 1971-01-27 1975-05-27 Thomson Csf Document singling arrangement
EP0317232A2 (en) * 1987-11-16 1989-05-24 Tekmax Inc. Plate feed apparatus
WO1998039240A1 (en) * 1997-03-05 1998-09-11 Gelco International, L.L.C. Plate feeder apparatus
EP1031523A2 (en) * 1998-04-08 2000-08-30 Tekmax Inc. Battery plate feeder having oscillating pick-up head
DE19943029A1 (en) * 1998-10-08 2000-04-13 Heidelberger Druckmasch Ag Paper handling system for use with printing machine loosens topmost sheet of paper from stack using sound source and side blower
US20050285323A1 (en) * 2004-06-18 2005-12-29 Terje Gulbrandsen Sheet handling apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105151766A (en) * 2015-09-22 2015-12-16 苏州富通高新材料科技股份有限公司 Sheet material separation and conveying device
CN105151766B (en) * 2015-09-22 2017-10-13 苏州富通高新材料科技股份有限公司 Sheet material separate transfer
CN106241439A (en) * 2016-09-29 2016-12-21 河南省新斗彩印刷有限公司 Semi-automatic die cutting machine automatic document feeder
WO2019072415A1 (en) * 2017-10-10 2019-04-18 Bobst Grenchen Ag Sheet feeder for a machine for processing material in sheet form, such as paper, cardboard or films
US11292680B2 (en) 2017-10-10 2022-04-05 Bobst Grenchen Ag Sheet feeder for a machine for processing material in sheet form, such as paper, cardboard or films

Also Published As

Publication number Publication date
AR061116A1 (en) 2008-08-06

Similar Documents

Publication Publication Date Title
EP1055621B1 (en) An automatic plate feeding system
EP2960191B1 (en) Suctioning and conveying system
WO2020124908A1 (en) Control method of image-text paper feeding cutting machine
US7381026B1 (en) Mail traying apparatus
SE501944C2 (en) Method and apparatus for handling sheets provided with information in a laser printer
JP2019011150A (en) Air paper feeder, and paper-feeding tray elevating/lowering control method for air paper feeder
WO2007136242A1 (en) Method and device for unstacking a stack of flexible sheets
EP1894868B1 (en) Sheet separation method, sheet separation mechanism and sheet feeder
US6846153B2 (en) Tray destacker
JPH0699048B2 (en) Paper feeder
JPH06507366A (en) Individual feeding device for film bags to the filling machine
CN208103306U (en) A kind of paper stack divides pile device
US6142462A (en) Horizontal feed table and method
KR200438203Y1 (en) Apparatus for supplying continuously pouch
JPH11322101A (en) Sheet paper feeder and image reading device provided with the same
CN113840789B (en) Substrate processing system with robot unit and operation method thereof
JPH10511335A (en) Apparatus for producing scale-like flow with controllable thickness
US20040032075A1 (en) Apparatus and method for destacking a stack of flat articles
CN117104898B (en) High-speed cardboard buttress machine of unloading of manipulator
JPH10236654A (en) Tray pack takeout device
CN219469108U (en) Paging device
EP2330064B1 (en) Sheet conveying device and image forming apparatus incorporating same
CN219729804U (en) Automatic stacking system for stacking
JP2521161Y2 (en) Paper feeder
JP2024027194A (en) Bag feeder

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06747554

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WA Withdrawal of international application
122 Ep: pct application non-entry in european phase

Ref document number: 06747554

Country of ref document: EP

Kind code of ref document: A1

WA Withdrawal of international application