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US1705506A - Sheet-lifting device working with suckers - Google Patents

Sheet-lifting device working with suckers Download PDF

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Publication number
US1705506A
US1705506A US221378A US22137827A US1705506A US 1705506 A US1705506 A US 1705506A US 221378 A US221378 A US 221378A US 22137827 A US22137827 A US 22137827A US 1705506 A US1705506 A US 1705506A
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Prior art keywords
sheet
blowing
suckers
pile
air
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Expired - Lifetime
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US221378A
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Spiess Georg
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Individual
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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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • 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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, articles

Definitions

  • the blowing nozz'les co-operating with the gripper jaws are, according to the invention, either directly fixed to the movable gripper jaw which grips the top-sheet from below, so that they participate in the movement of the'same, or stationarily mounted preferably on the support of the gripper-1 aw.
  • blowing nozzles are preferably adjustably arranged under the movable gripper jaw, either stationarily'or movable with the gripper jaw, or the one nozzle stationary and the other movable.
  • the blowing nozzles may have a common supply-pipe and a common regulation or they may have each its own supply-pipe. The strength of each blowing alret may be regulated individu all].
  • geveral'embodimen tsof the invention are ment of the separators relative to e top-sheet so that a reliable pulling illustrated, by way of example, in the. accompanying drawings, in whichi- Fig.1 shows in elevation the total arrangement of the device Fig. 1 is aplanview showing the arrangethe sheet pile. I Fig. 2 shows on larger scale the carrier for the sheet-lifting device, the blowers being mounted on the movable gripper jaw.
  • Fig. 3 is a Vew similar to Fig. 2, the blow ers being mounted on the carrierof the gripper Jaw.
  • Fig. 4 illustrates a form of construction of a gripper jaw with two blowing nozzles connected with the samei q Fig. 5 shows on larger scale and in perspective View the connection of the gripper jaw with the blowers.
  • the sheet-pile is designed by 1; Qis a pile-plate, 3 the machineframe, 4 the driving shaftfrom which, by spur-wheels 5 and 6, a shaft"? is rotated on which, at either side of the pile 1, armsS are mounted so that";v they can be adjusted in transverse direction.
  • These arms 8 carry the. sheet lifting device and-pull the sheet off the pile by an oscillating movement.
  • suction nozzles 9 are hingedlycon levers and control-cams so that, after the.
  • the grippers 12, which clamp the lifted sheet-corners against the suction-nozzles 9, have blowing-nozzles 13 from,which a channel leads to a tubular-connection M on which a hose 15 is fixed.
  • the other end of hose 151 is attached to a tubular socket of an airchannel provided in the carrier '15- of the op-- crating levers for the gripper jaws.
  • the other tubular-connection of the air-channel is connected by a hose 17 with the controlapparatus for the blowing air.
  • a blowing air-nozzle 18 is rigidly fixed to the carrier for the operating levers of the gripper jaws and connected to the hose 17' by its tubular-connection 19.
  • the nozzle 18 is arranged at such aheight, with regard to the arm 8, that the jet of blowing air is directed under the sheet-corners sucked on and lifted by the suckers 9.
  • the blowing air. is controlled in, such 'a manner that it position by means of a clamping screw 21.
  • the arms of said holder embrace the gripperhub from bothsides.
  • a blower 2 5 is clamped by means ,of a-clampingebow 23 and clamping screws- 24, the hose, 1'? for the blowing air being connected to said blower.
  • The, blower- 25 comprises two blowing nozzles 26, 27, the
  • Both noz- 'zles 26, 27 are arranged directly under the gripper jaw 12 and execute the same movements as the. gripper jaw.
  • the blowing nozzles may be, adjusted on the rocking-shaft 20 with regard to the gripper'jaw12 after loosening of the clamping-screw ,21 v. and turning of the holder 22, so that the direction of the jets of blowing air can always be adjusted in accordance with the manner of working of the sucker and of the gripper jaw.
  • blowing-nozzles 26,27 participate in' the oscillatingmovement-of the, gripper jaw. They may be both stationary, or only the nozzle 26 may be stationary the nozzle 27 being connected with the gripper jaw. Each blowing-nozzle may evidently have its own supply-conduit, and the strength of each blowing jet may be regulated individually.
  • a sheet lifting device working with suckers comprising in combinationwith the suckers designed to lift the front-corners of the top-sheet from .the pileofgripper jaws for clamping the front-edge of the lifted top-sheet against the suckers and for pulling said sheet off the pile, and blowing nozzles coroperating -with said gripper jaws for blowing, air into the gap between the lifted front-portion of the top-sheet-and the pile.
  • a sheet liftingdevice as specified in claim 1, comprising in combination with each gripping jaw, two blowing nozzles, one
  • a sheet lifting device as specified in claim 1, comprising in combination with each gripper jaw, two blowing-nozzles underneath said gripper jaw one directed so that the air-jet 'blows along the lower surface of the lifted portion of the sheet, the other being downwardly directed to blow the air onto the pile.
  • a sheet lifting device as specified in claim 1, comprising in combination with a gripper aw, a rock1ng-shaft,'a U-shaped holder: for the gripper jaw 'adjustably' mounted on said rocking-shaft, and two blowing-nozzles in said holder under said gripper jaw one blower nozzle being directed so that the air-jet blows along the lower surface of the lifted portion of the sheet and 'the'other nozzle being directed to blow the air downwardly onto the pile.
  • a sheet lifting device as specified in claim 1 comprising in combination with a rock shaft, a gripper jaw'adjustably mounted on said shaft, and two blowing nozzles carried by the shaft and disposedbeneath and adjustable with the gripper jaw, one
  • nozzle being directed so that the 'air jet blows along the lower surfaceof the lifted portion of the sheet and the other nozzle being directed toblow the air downwardly ile.

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

Description

March 19, 1 929, v G. @1555 memos- SHEET LIFI'ING DEVICE WORKING WITH SUCKERS Filed Sept. 22, 1927 -2 sheets sheet 1 h 19, 1929. v a. SPIESS 9 5 SHEET LIF'TING DEVICE WORKING WITH SUCKBRS I Filed Sept. 22, 192'? 2 SheetS SMQt Z Patented Mar. 19,1929.
flum'rao STATES GEoRGsr Ess; or LEIrzIG-rLAGwIrz, GERMANY.
snnn'r-Lmzrme DEvIoE WORKING WITH sucxnns.
Application filed- September 22, 1927, Serial No. 221,378 and in Germany September 25, 1926.
It has become known to blow, in sheet lifting devices which work with suckers, air between the sucked-on portion'of thetop-sheet and the pile of sheets in order to facilitate the separation of the uppermost sheet which has been sucked onat one edge and lifted from the pile. WVhen the sheet is lifted by the suckers on the front-edge and pulled off, the blowing air acts in a direct-ion'opposite to that in which the sheet is being pulled off and the suckers must, as they have toovernected with the gripper aws, under the bent portion of the top-sheet between this sheet and the pile. Only a very feeble sucking effect is consequently required as the same is necessar only for bending avery small portion of tl i off of the sheet from the pile is ensured as the sheeti's securely gripped by the mechanical gripper jaws. The blowing nozz'les co-operating with the gripper jaws are, according to the invention, either directly fixed to the movable gripper jaw which grips the top-sheet from below, so that they participate in the movement of the'same, or stationarily mounted preferably on the support of the gripper-1 aw.
It is advisable to direct two different blowin air-jets between the portion of sheet lifted y the suckers and the pile, the one along the lower surface of the lifted sheetportion to facilitate pulling off of the top sheet from the pile, and the other directly against the uppersurface of the pile for holding down the next following sheets. The blowing nozzles are preferably adjustably arranged under the movable gripper jaw, either stationarily'or movable with the gripper jaw, or the one nozzle stationary and the other movable. .The blowing nozzles may have a common supply-pipe and a common regulation or they may have each its own supply-pipe. The strength of each blowing alret may be regulated individu all].
geveral'embodimen tsof the invention are ment of the separators relative to e top-sheet so that a reliable pulling illustrated, by way of example, in the. accompanying drawings, in whichi- Fig.1 shows in elevation the total arrangement of the device Fig. 1 is aplanview showing the arrangethe sheet pile. I Fig. 2 shows on larger scale the carrier for the sheet-lifting device, the blowers being mounted on the movable gripper jaw.
Fig. 3 is a Vew similar to Fig. 2, the blow ers being mounted on the carrierof the gripper Jaw.
Fig. 4 illustrates a form of construction of a gripper jaw with two blowing nozzles connected with the samei q Fig. 5 shows on larger scale and in perspective View the connection of the gripper jaw with the blowers.
Referring to Fig. 1, the sheet-pile is designed by 1; Qis a pile-plate, 3 the machineframe, 4 the driving shaftfrom which, by spur-wheels 5 and 6, a shaft"? is rotated on which, at either side of the pile 1, armsS are mounted so that";v they can be adjusted in transverse direction. These arms 8 carry the. sheet lifting device and-pull the sheet off the pile by an oscillating movement. To-the arms 8 suction nozzles 9 are hingedlycon levers and control-cams so that, after the.
sheet-corners have been lifted by the suckers -9, they grip undenthe lifted sheet-corners and clamp the same in co operation with the suction-nozzles so that no further suckingwork is required. It is not necessary to specially describe in which manner the suckers and gripper jaws are operated as they .do not form part of the invention.
nected, designed to suck on and liftlithe.
The grippers 12, which clamp the lifted sheet-corners against the suction-nozzles 9, have blowing-nozzles 13 from,which a channel leads to a tubular-connection M on which a hose 15 is fixed. The other end of hose 151 is attached to a tubular socket of an airchannel provided in the carrier '15- of the op-- crating levers for the gripper jaws. The other tubular-connection of the air-channel is connected by a hose 17 with the controlapparatus for the blowing air.
In the form of construction shown in Fig.
3 a blowing air-nozzle 18 is rigidly fixed to the carrier for the operating levers of the gripper jaws and connected to the hose 17' by its tubular-connection 19. The nozzle 18 is arranged at such aheight, with regard to the arm 8, that the jet of blowing air is directed under the sheet-corners sucked on and lifted by the suckers 9. The blowing air. is controlled in, such 'a manner that it position by means of a clamping screw 21.
The arms of said holder embrace the gripperhub from bothsides. On the bottom of the holder 22 a blower 2 5 is clamped by means ,of a-clampingebow 23 and clamping screws- 24, the hose, 1'? for the blowing air being connected to said blower. The, blower- 25 comprises two blowing nozzles 26, 27, the
nozzle 26 being directed so that the out-flowing air blows along the lower surface of the lifted portion of the sheet, the nozzle 26 beingdownwardly directed towards the surface of the pile so that the blowing air presses the sheets onto the pile. Both noz- ' zles 26, 27 are arranged directly under the gripper jaw 12 and execute the same movements as the. gripper jaw. The blowing nozzles may be, adjusted on the rocking-shaft 20 with regard to the gripper'jaw12 after loosening of the clamping-screw ,21 v. and turning of the holder 22, so that the direction of the jets of blowing air can always be adjusted in accordance with the manner of working of the sucker and of the gripper jaw.
it is not necessary that the blowing- nozzles 26,27 participate in' the oscillatingmovement-of the, gripper jaw. They may be both stationary, or only the nozzle 26 may be stationary the nozzle 27 being connected with the gripper jaw. Each blowing-nozzle may evidently have its own supply-conduit, and the strength of each blowing jet may be regulated individually. v
011 the pile.
.onto the 1' claim: 1. A sheet lifting device working with suckers, comprising in combinationwith the suckers designed to lift the front-corners of the top-sheet from .the pileofgripper jaws for clamping the front-edge of the lifted top-sheet against the suckers and for pulling said sheet off the pile, and blowing nozzles coroperating -with said gripper jaws for blowing, air into the gap between the lifted front-portion of the top-sheet-and the pile.
2. A sheet liftingdevice as specified in claim 1, comprising in combination with each gripping jaw, two blowing nozzles, one
of said nozzles being directed so that the jet of blowing air blows along the lower surface 'of the lifted sheet-portion, the other blowingnozzle being downwardly directed towards the pile so that the air-jet holds the sheets] 3. A sheet lifting device as specified in claim 1, comprising in combination with each gripper jaw, two blowing-nozzles underneath said gripper jaw one directed so that the air-jet 'blows along the lower surface of the lifted portion of the sheet, the other being downwardly directed to blow the air onto the pile.-
4. A sheet lifting device as specified in claim 1, comprising in combination with a gripper aw, a rock1ng-shaft,'a U-shaped holder: for the gripper jaw 'adjustably' mounted on said rocking-shaft, and two blowing-nozzles in said holder under said gripper jaw one blower nozzle being directed so that the air-jet blows along the lower surface of the lifted portion of the sheet and 'the'other nozzle being directed to blow the air downwardly onto the pile.
5. A sheet lifting device as specified in claim 1, comprising in combination with a rock shaft, a gripper jaw'adjustably mounted on said shaft, and two blowing nozzles carried by the shaft and disposedbeneath and adjustable with the gripper jaw, one
nozzle being directed so that the 'air jet blows along the lower surfaceof the lifted portion of the sheet and the other nozzle being directed toblow the air downwardly ile.
v In testi fnony whereof I affix my signature.
GEORG SPlESS.
US221378A 1926-09-25 1927-09-22 Sheet-lifting device working with suckers Expired - Lifetime US1705506A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764408A (en) * 1952-07-01 1956-09-25 Jagenberg Werke Ag Method and means for withdrawing labels from a stack of labels in a labelling machine
US3738645A (en) * 1971-11-26 1973-06-12 Usm Corp Top sheet separating, hold-back-down mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764408A (en) * 1952-07-01 1956-09-25 Jagenberg Werke Ag Method and means for withdrawing labels from a stack of labels in a labelling machine
US3738645A (en) * 1971-11-26 1973-06-12 Usm Corp Top sheet separating, hold-back-down mechanism

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