US3168308A - Sheet member handling - Google Patents

Sheet member handling Download PDF

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Publication number
US3168308A
US3168308A US48116A US4811660A US3168308A US 3168308 A US3168308 A US 3168308A US 48116 A US48116 A US 48116A US 4811660 A US4811660 A US 4811660A US 3168308 A US3168308 A US 3168308A
Authority
US
United States
Prior art keywords
stack
air
sheet member
roll
face
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.)
Expired - Lifetime
Application number
US48116A
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English (en)
Inventor
Richard R Walton
George E Munchbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walton SL
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US48116A priority Critical patent/US3168308A/en
Priority to GB28441/61A priority patent/GB989490A/en
Priority to DE1435069A priority patent/DE1435069C3/de
Priority to BE607025A priority patent/BE607025A/fr
Application granted granted Critical
Publication of US3168308A publication Critical patent/US3168308A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H3/14—Air blasts producing partial vacuum

Definitions

  • Our invention has two general objectives, the separation and the pick-up from adjacent surface of individual thin, relatively flexible sheet members.
  • One application of our invention is the removal of individual textile pieces from such stacks as are obtained when many layers of overlying textile are cut simultaneously in preparation for such operations as transporting, sewing, punching, packaging, etc. Adjacent pieces in such stacks are compressed and the edges locked together by the entangled fibers; the pieces are generally porous; and the stack is susceptible to disruption. These obstacles to mechanized separation account for the fact that garment workers, as an example, tothis day separate the pieces with their fingers. Our invention overcomes such problems.
  • Our invention includes directing a stream of air or any suitable gas to i'low over the face of a sheet member so that the sheet member deiines a boundary of the air stream and changing the air stream to lift by entrainment the sheet member.
  • Our invention comprehends the possible initial use of the stream to flutter the edge portion of a sheet member to promote initial separation of that portion.
  • Apparatus of our invention removes a member without stack disruption, and a preferred embodiment delivers the member very accurately to a position from which it can be subjected to mechanized operations.
  • FIG. l is a diagrammatic representation of the operation of the invention illustrating an initial relation of an air stream with respect to a sheet member
  • FIG. 2 is a diagrammatic representation of the operation of the invention achieving preliminary flutter separation
  • FIG. 3 is a diagrammatic representation similar to FIG. l indicating the separating effect of the air stream as it is changed to a path away from the stack;
  • FIG. 4 is a diagrammatic representation similar to FIG. 2 illustrating further separation obtained by movement of the source of the air stream;
  • FIG. 5 is a perspective of a preferred separation apparatus
  • FIG. 6 is a sectional view of the apparatus of FIG. 5 accomplishing initial separation of a sheet member from a stack;
  • FIG. 7 is a sectional View similar to FIG. 6, illustrating the progressive separation achieved with the apparatus of FIG. 5;
  • FIG. 8 is a perspective of a preferred separation and pick-up apparatus
  • FIGS. 9, l0 and ll are diagrammatic end views of the pick-up roll of the embodiment of FIG. 8 illustrating its relation to a sheet member at three successive positions.
  • Operative in our invention is an air stream which is directed to flow over and generally parallel with the face of a sheet member from an air outlet connected to a compressed air supply.
  • the sheet member thereby defines a boundary of the air stream, and deviations in the air stream path away from the stack cause the sheet member to leave the stack.
  • Deviation may occur through rotation of the air outlet, so as to direct air in a path inclined to the stack; or a stream of air owing initially parallel to the face of the stack can be caused to flow in a curved path away from the stack; or the air outlet may be raised from the stack. In each instance, so long as the sheet member remains entrained with the air stream, it conforms to deviations in the air stream in paths away from the stack.
  • a nozzle means I4 is disposed to direct an air stream over and generally parallel with the face of a sheet member 16 of stack 12 towards a sheet member extremity, a corner or edge. Thereby this portion of the sheet member resides at and denes a boundary of the air stream and is ready to be lifted.
  • a substantial air flow can first be directed over the edge margin from a point spaced substantially inside from the edge, for causing flutter of the edge portion, especially useful in causing edge disengagement with the stack where there is liber entanglement of textile pieces.
  • the nozzle is rotated in a vertical plane from the orientation of FIG. l to point at an angle A, inclined away from the face.
  • the sheet member is lifted up as it remains in alignment with the air stream, and thus is peeled from the adjacent surface.
  • the nozzle can be subsequently moved back from the corner, progressively separating and turning up rearward portions without stack disruption. Grasping of the initially turned up corner may occur simultaneously.
  • one preferred embodiment of our invention is a device comprised of an elongated shield 20 of an arcuate cross-section, e.g., a segment of a cylinder, along a convex side of which are disposed air outlets 22 connected to an air supply 24, adapted to direct air streams substantially tangentially to the convex surface.
  • a worker can initially hold the device by handle 26 over the face of a stack, at an edge, with the outlets disposed so that a substantial component of the air stream flows over the stack face towards the edge; this air stream ilows generally parallel to the sheet where the curve of the convex surface is generally parallel with the stack face, and beyond this, due to the effect of the upward curve of the surface next to which it ows, this air stream is progressively curved and ows away from the stack, in the direction indicated by arrow 29 in FIG. 6.
  • the edge portion 28 of the face sheet bends up to align with the air ow, being substantially separated from the adjacent surface.
  • air streams indicated by arrow 34 flow over a sheet member 38 at the face of a stack 39 from openings 35 in a pick-up roll 36 (see FIG. 9).
  • This roll has Van air passage 44B supplied with compressed air. Air leaving the openings 35 flows tangentially to the surface of the roll.
  • a number of narrow belts 42 extend from an anchor 44 (fixed with respect to the stack 39) forward to and around the pickup roll 36, then back to rear pulleys 46, then to the anchor.
  • the pick-up roll and the pulleys are rotatably mounted in a frame 47 which is adapted for reciprocation to carry the pick-up roll over the stack to the outer edge, then back over the stack face to a point beyond the opposite edge.
  • the pick-up roll is preferably in driving contact with the belts and is rotated thereby when translational movement occurs, electing a rolling type motion with respect to the stack. At any rate, it is preferred that the belts move in substantial correspondence with rotational movement of the roll. It will be Seen that rear pulley 46 and the anchoring of the belts after being led around these pulleys is, in elfect, a take-up and feed-out device, maintaining a generally even tension in the belts through the successive positions of the frame 47.
  • edge portion 3S of the face member is initially turned upwards when the air stream ows from the pick-up roll over the face surface towards the edge, and deviates in an upwardly curved path.
  • the sheet member is progressively peeled oli from the stack'by the air stream forces as rearward movement of theframe 47 progresses until the sheet member suliiciently frictionally engages a conveyer, here belts 42. This occurs after the air stream openings have rotated through a substantial arc,fwith the sheet member being bent about the roll.
  • the belts engage the rear portions 50 of the stack when the pick-up roll is in forward positions, and this prevents undesirableV slippage of the face member relative to the stack.
  • No relative translational movement occurs between the belt and stack and engagement and disengagement occurs without stack disruption, automatically with forward and rearward movement of the pick-up roll respectively.
  • the edge 38 is held positively with relation to the pick-up roll by the tension forces created by the air stream on this edge and the restraint of the belts on the rear portions.Y
  • the frame 47 has moved back carrying the pick-up roll past the rear edge, the separated sheet member lies on top of the conveyer belts, available to be transported to a station for further operations by hand or conveyer mechanism.
  • an air stream hasV been created by directing airV through a small hole in a pick-up roll having a diameter of about 1/s inch from a source of compressed air maintained at a pressure of 50 p.s.i.
  • This air stream was sufficient to promote separa- Y tion of an individual piece of terry cloth cloth from a Stack; terry cloth being a rough fabric, pieces of which are considered very difficult to separate.
  • An apparatus for promoting pick-up of an individual sheet member comprising an elongated roll member having a convexly curved outer surface, said roll member Y being mounted for repeatable translationalV movement over the face of said sheet member, away from an initial position above the sheet member in the region of an edge thereof, and said roll member being mounted for simul-V taneous rolling type rotational movement, said roll memp ber having an air passage adapted to be connected to a compressed air supply, and having an air outlet adapted to direct an air stream generally tangential to its outer surface, whereby when said roll member is at said initial position with said air outlet positioned to direct air towards said edge of said sheet member, said air stream causes edge portions of the sheet member to be raised to said curved surface, and translation of said roll member away from the initial position causes movement of said sheet member edge with said roll member.
  • a movable conveyer is disposed adjacent said roll member, adapted to receive said sheet members moving with said roll members, said conveyor being adapted to move in the direction away from said roll member when said roll member rotates whereby translation of said roll member over the face of said sheet member away from said edge causes said sheet member to move onto said conveyer.
  • a belt means is secured Vto an anchor fixed behind and below the sheet member, said belt means extending forward, and upward to a point fixed with respect to the axis of said roll member, a take-up and feed-out means provided to tension said belt means with respect to said anchor as movement of the roll member towards and away from said lanchor occurs respectively whereby said belt means is adapted to engage for restraint rear portions of the face of said sheet member when said roll member is in the region of said forward edge, and whereby the pull exerted yon the forward edge of said sheet member by said air stream insures positive positioning of the sheet member being removed.
  • said belt means comprises a plurality of narrow belts
  • said roll member has cylindrical surface portions about which said belts are engaged in driving contact at a point between said anchor and said take-up and feed-out device whereby said belts cause rotation of said roll member in response to translational movement of the axis of said roll member.
  • take-up and feed-out device includes an idler mechanism mounted for translation with said pick-up roll, and said belt means is lead around said idler mechanism and forward to an anchor at a point fixed with respect toA said stack.
  • said means for separating said lirst extremity of said textile piece ⁇ from said stack comprises means to produce a stream of air over said extremity that produces a low pressure zone above the face of said stack toward which said extremity raises into position for engagement with said carrier means.
  • said carrier means includes a movable belt means, said belt means having a substantially dat span extending from a point adjacent to said means for separating said extremity,
  • said carrier means includes a plurality of movable belts spaced apart transversely to the direction of movement, said means for separating said rst extremity of said textile piece from the stack located to act upon said extremity through the space provided between said belts.
  • said carrier means includes a belt which initially has a portion eX- tending toward said opposite extremity of -said textile piece, lying adjacent the face of said stack, said belt anchored against lateral movement relative to said stack and means for progressively taking up said belt from said stack in the direction toward said opposite extremity with said movement of said supporting member toward said opposite extremity.
  • the mechanism of claim 12 adapted to be returned to its initial position after removal of the tirst textile piece, and adapted simultaneously to replace said belt to lie adjacent .the face of said stack.
  • said means for taking up said belt from said stack includes a curved member having a convex side exposed downwardly, said curved member mounted upon said supporting member, said belt means being trained under and against said curved member, the curved member adapted to translate with said supporting member across the face of said stack in the direction away from said first extremity of said textile piece upon said movement of said supporting member, said belt adapted to progressively roll about said curved member and leave said stack upon said movement of said supporting member.
  • said means for separating said rst extremity of said textile piece from said stack includes means to cause an air stream to ow between the undersurface of said curved member and said stack whereby said tirst extremity of said textile piece is raised into engagement with said belt.
  • said belt comprises spaced-apart parallel belt portions
  • said curved member includes an air supply passage
  • an air outlet passage extends from within said curved member to discharge between said belt portions in an upwardly directed air ow from a point adjacent the face of said stack whereby -said first extremity of said textile piece is raised into engagement with said belt portions.
  • An apparatus for promoting pick-up of individual sheet members comprising a curved member mounted for initial positioning over the face of a sheet member, near an edge thereof, and for movement away therefrom, said curved member having a faired, generally convex undersurface portion, inclined upwardly on the side adjacent said edge when said curved member is in said initial position, and an air conductive means disposed at the opposite side of said undersurface portion, positioned to direct a stream of air initially in the general direction of said edge in a path adjacent to and below said undersurface, said undersurface being thereby adapted to cause at least some of said air stream vto move in an attitude inclined to the direction of initial air flow for lifting edge portions of said sheet member, said curved member and said air conductive means -being mounted for mutual rotational movement relative to the initial position of the sheet member whereby the direction of said air stream can be changed by rotation, carrying said sheet member portions therewith.
  • Apparatus for removing an air permeable top cloth piece from a stack of air permeable pieces comprising a rotatable air directing means adapted in an initial position to direct air from a positive air supply against a margin portion of said top cloth piece, means adapted to rotate said air directing means to change the direction of said air stream to ow at a substantial angle away from said stack in the direction outwardly of said margin, said air directing means adapted to apply a lifting force to said margin of said top piece and carry said margin away from said stack with said change in direction of said air stream.
  • said air directing means includes an air supply manifold extending across said stack, a multiplicity of air outlets connected to said manifold, positioned initially to direct a plurality of air streams against said top cloth piece, said manifold rotatably supported on an axis parallel to the plane of said top piece, and means adapted to rotate said manifold to turn said outlets away from said stack.
  • the method of initiating removal of an air permeable top cloth piece from a stack of air permeable pieces comprising, by means of an air outlet means provided with a positive air supply, initially directing a stream of air to ow against a margin portion of said top piece to promote its loosening, thereafter rotating said air outlet means to cause said air stream to flow at a substantial angle away from said stack, thereby applying a lifting force to said top piece and carrying said margin away from said stack.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US48116A 1960-08-08 1960-08-08 Sheet member handling Expired - Lifetime US3168308A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US48116A US3168308A (en) 1960-08-08 1960-08-08 Sheet member handling
GB28441/61A GB989490A (en) 1960-08-08 1961-08-04 Improvements in or relating to sheet-separating apparatus
DE1435069A DE1435069C3 (de) 1960-08-08 1961-08-07 Abnahmevorrichtung zum Vereinzeln von durchlässigen Gewebestücken von einem Stapel
BE607025A BE607025A (fr) 1960-08-08 1961-08-08 Perfectionnements apportés aux procédés et dispositifs pour manipuler des pièces en forme de feuilles, plus spécialement en matières textiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48116A US3168308A (en) 1960-08-08 1960-08-08 Sheet member handling

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US3168308A true US3168308A (en) 1965-02-02

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US48116A Expired - Lifetime US3168308A (en) 1960-08-08 1960-08-08 Sheet member handling

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US (1) US3168308A (fr)
BE (1) BE607025A (fr)
DE (1) DE1435069C3 (fr)
GB (1) GB989490A (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712611A (en) * 1970-03-17 1973-01-23 Tech Des Ind De L Habillement Suction gripping apparatus
US4395035A (en) * 1980-12-24 1983-07-26 International Business Machines Corporation Air shingler
US4531723A (en) * 1982-04-02 1985-07-30 Metromail Corporation Paper sheet separator
US4635917A (en) * 1984-03-02 1987-01-13 State Of Israel, Ministry Of Defense, Rafael Armament Method and apparatus for feeding sheets, particularly fabrics from a stack
US4641827A (en) * 1983-06-02 1987-02-10 Richard R. Walton Fabric pickup and the like
US4645193A (en) * 1984-05-30 1987-02-24 Richard R. Walton Fabric pickup and the like
US4669716A (en) * 1985-07-29 1987-06-02 Bell & Howell Method and device for deflecting a sheet prior to feeding
US4708333A (en) * 1984-11-23 1987-11-24 State Of Israel, Ministry Of Defense, Rafael Armament Development Authority Method and apparatus for separating, feeding and/or folding sheets
US4748923A (en) * 1986-04-11 1988-06-07 Richard R. Walton Method and apparatus for automated loading of apparel segments to a garment assembly machine and the like
US4823535A (en) * 1987-02-25 1989-04-25 Agfa-Gevaert Ag Device for unloading X-ray film cassettes
US4892298A (en) * 1983-06-02 1990-01-09 Richard R. Walton Device and method for pickup of sheet-form flexible fabric or the like
WO1990003936A1 (fr) * 1988-10-04 1990-04-19 Courtaulds Textiles (Holdings) Limited Appareil et procede permettant d'alimenter en feuilles flexibles
US5046712A (en) * 1990-09-10 1991-09-10 Ark, Inc. Apparatus for handling workpieces of limp sheet material
US5337456A (en) * 1990-10-22 1994-08-16 Rieter Machine Works, Ltd. Method and apparatus for opening a wadding lap
WO2002102692A1 (fr) * 2001-06-20 2002-12-27 Sirodan Technologies Ltd. Appareil et procede de distribution de feuilles
US6688591B2 (en) 2002-04-05 2004-02-10 Agfa Corporation Apparatus and method for removing slip sheets
US6755937B1 (en) 1997-12-19 2004-06-29 Kimberly-Clark Worldwide, Inc. Paper sheet having improved rate of absorbency
US20220186417A1 (en) * 2020-12-10 2022-06-16 Juki Corporation Pick-up device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT70032A (en) 1978-08-10 1979-09-01 Gaspar A H Bijtebier Method and apparatus for the separation of flexible sheetsfrom a stack and their transportation to a processing unit
NL8602953A (nl) * 1986-11-20 1988-06-16 Nl Kleding & Tricotage Rnkt Inrichting voor het onderste boven leggen van een lap of vel van flexibel materiaal.
DE4112379A1 (de) * 1991-04-16 1992-10-22 Johannes Dipl Ing Gross Verfahren und vorrichtung zur vereinzelung von gestapelten materialbahnen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867038A (en) * 1929-11-27 1932-07-12 Miller Printing Machinery Co Sheet separating device
US2441912A (en) * 1946-07-23 1948-05-18 Bruning Charles Co Inc Sheet separating device
US2454762A (en) * 1946-05-24 1948-11-30 Christensen Machine Co Sheet feeding method and apparatus therefor
US2595546A (en) * 1950-08-07 1952-05-06 Alvin G Sampson Pneumatic sheet separating device
US2791424A (en) * 1953-11-09 1957-05-07 Alonzo W Noon Automatic separating system
US2819075A (en) * 1954-12-20 1958-01-07 Alonzo W Noon Sheet-separating device
US2953371A (en) * 1957-12-31 1960-09-20 Burroughs Corp Sheet feeder

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867038A (en) * 1929-11-27 1932-07-12 Miller Printing Machinery Co Sheet separating device
US2454762A (en) * 1946-05-24 1948-11-30 Christensen Machine Co Sheet feeding method and apparatus therefor
US2441912A (en) * 1946-07-23 1948-05-18 Bruning Charles Co Inc Sheet separating device
US2595546A (en) * 1950-08-07 1952-05-06 Alvin G Sampson Pneumatic sheet separating device
US2791424A (en) * 1953-11-09 1957-05-07 Alonzo W Noon Automatic separating system
US2819075A (en) * 1954-12-20 1958-01-07 Alonzo W Noon Sheet-separating device
US2953371A (en) * 1957-12-31 1960-09-20 Burroughs Corp Sheet feeder

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712611A (en) * 1970-03-17 1973-01-23 Tech Des Ind De L Habillement Suction gripping apparatus
US4395035A (en) * 1980-12-24 1983-07-26 International Business Machines Corporation Air shingler
US4531723A (en) * 1982-04-02 1985-07-30 Metromail Corporation Paper sheet separator
US4892298A (en) * 1983-06-02 1990-01-09 Richard R. Walton Device and method for pickup of sheet-form flexible fabric or the like
US4641827A (en) * 1983-06-02 1987-02-10 Richard R. Walton Fabric pickup and the like
US4635917A (en) * 1984-03-02 1987-01-13 State Of Israel, Ministry Of Defense, Rafael Armament Method and apparatus for feeding sheets, particularly fabrics from a stack
US4645193A (en) * 1984-05-30 1987-02-24 Richard R. Walton Fabric pickup and the like
US4708333A (en) * 1984-11-23 1987-11-24 State Of Israel, Ministry Of Defense, Rafael Armament Development Authority Method and apparatus for separating, feeding and/or folding sheets
US4669716A (en) * 1985-07-29 1987-06-02 Bell & Howell Method and device for deflecting a sheet prior to feeding
US4748923A (en) * 1986-04-11 1988-06-07 Richard R. Walton Method and apparatus for automated loading of apparel segments to a garment assembly machine and the like
US4823535A (en) * 1987-02-25 1989-04-25 Agfa-Gevaert Ag Device for unloading X-ray film cassettes
US5263700A (en) * 1988-10-04 1993-11-23 Courtaulds Textiles (Holdings) Limited Feeding of flexible sheets
WO1990003936A1 (fr) * 1988-10-04 1990-04-19 Courtaulds Textiles (Holdings) Limited Appareil et procede permettant d'alimenter en feuilles flexibles
US5046712A (en) * 1990-09-10 1991-09-10 Ark, Inc. Apparatus for handling workpieces of limp sheet material
US5337456A (en) * 1990-10-22 1994-08-16 Rieter Machine Works, Ltd. Method and apparatus for opening a wadding lap
US6755937B1 (en) 1997-12-19 2004-06-29 Kimberly-Clark Worldwide, Inc. Paper sheet having improved rate of absorbency
US7112257B2 (en) 1997-12-19 2006-09-26 Kimberly-Clark Worldwide, Inc. Method of mechanical softening of sheet material
WO2002102692A1 (fr) * 2001-06-20 2002-12-27 Sirodan Technologies Ltd. Appareil et procede de distribution de feuilles
US20040217540A1 (en) * 2001-06-20 2004-11-04 Dan Sinai Apparatus and method for dispensing sheets
US6688591B2 (en) 2002-04-05 2004-02-10 Agfa Corporation Apparatus and method for removing slip sheets
US20220186417A1 (en) * 2020-12-10 2022-06-16 Juki Corporation Pick-up device
US12043936B2 (en) * 2020-12-10 2024-07-23 Juki Corporation Pick-up device

Also Published As

Publication number Publication date
DE1435069A1 (de) 1968-11-28
GB989490A (en) 1965-04-22
DE1435069C3 (de) 1974-01-10
DE1435069B2 (de) 1973-06-14
BE607025A (fr) 1961-12-01

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