US3848752A - Apparatus for transferring sheet material - Google Patents

Apparatus for transferring sheet material Download PDF

Info

Publication number
US3848752A
US3848752A US00073032A US7303270A US3848752A US 3848752 A US3848752 A US 3848752A US 00073032 A US00073032 A US 00073032A US 7303270 A US7303270 A US 7303270A US 3848752 A US3848752 A US 3848752A
Authority
US
United States
Prior art keywords
suction
sheet
hood
location
rollers
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
US00073032A
Other languages
English (en)
Inventor
G Branch
J Hall
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.)
Pilkington Group Ltd
Original Assignee
Pilkington Brothers Ltd
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 Pilkington Brothers Ltd filed Critical Pilkington Brothers Ltd
Application granted granted Critical
Publication of US3848752A publication Critical patent/US3848752A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
    • B65G21/20—Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
    • B65G21/2027—Suction retaining means
    • B65G21/2036—Suction retaining means for retaining the load on the load-carrying surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
    • B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
    • B65G49/061—Lifting, gripping, or carrying means, for one or more sheets forming independent means of transport, e.g. suction cups, transport frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
    • B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
    • B65G49/063—Transporting devices for sheet glass
    • B65G49/064—Transporting devices for sheet glass in a horizontal position
    • B65G49/065—Transporting devices for sheet glass in a horizontal position supported partially or completely on fluid cushions, e.g. a gas cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
    • B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
    • B65G49/068—Stacking or destacking devices; Means for preventing damage to stacked sheets, e.g. spaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G57/00—Stacking of articles
    • B65G57/02—Stacking of articles by adding to the top of the stack
    • B65G57/03—Stacking of articles by adding to the top of the stack from above
    • B65G57/04—Stacking of articles by adding to the top of the stack from above by suction or magnetic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/32—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from pneumatic, e.g. suction, carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2249/00—Aspects relating to conveying systems for the manufacture of fragile sheets
    • B65G2249/04—Arrangements of vacuum systems or suction cups
    • 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
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/154—Rollers conveyor

Definitions

  • Apparatus for transferring glass Sheets comprises 3 quence of drive rollers above the transfer path and [52] s Cl 214/1 BS, 214/1 214/85 D suction means arranged to draw the sheets against the 271/196 294/ rollers so that the sheets are advanced by the rollers. 51 1111. c1.
  • suction release means may be provided or mechanical means may be provided to force the sheet [56] References Cited away from the rollers.
  • SHEET 9 OF 9 l n ventor Attorney APPARATUS FOR TRANSFERRING SHEET MATERIAL BACKGROUND OF THE INVENTION This invention relates to the transferring of sheet material, for example glass sheets from a first location to a second location. More especially the invention relates to the stacking of sheets which are being fed in succession along a conveyor to a stacking station, or to the unstacking of a stack of sheets one-by-one and transferring those sheets to a conveyor by which they are transferred to a further treatment.
  • the invention also relates to means for releasing the suction when required to lower a sheet onto a stack of sheets.
  • the invention provides an advance in the automatic transfer of glass sheets from one location to another.
  • a succession of drive members are arranged above the transfer path and suction means is provided above the transfer path and arranged to operate so that suction is applied between the drive members to draw the sheets against the drive members.
  • suction means is provided above the transfer path and arranged to operate so that suction is applied between the drive members to draw the sheets against the drive members.
  • the sheets are advanced by the drive members while suctionally held against the lower surfaces of the drive members.
  • This enables improved selective stacking of the sheets when the transfer path passes over one or more stacking stations.
  • means is provided to release the sheet from the drive members when in a required position so that the sheet falls onto the stack.
  • the means for releasing the sheet may comprise means for terminating the suction effect adjacent the drive members holding the sheet.
  • a mechanical device may be provided to force the sheet away from the drive members.
  • FIG. 1 is a side elevation of one embodiment of apparatus according to the invention for transferring glass sheets from a first conveyor to a second conveyor,
  • FIG. 2 is a front elevation of the apparatus of FIG. 1,
  • FIG. 3 is an underneath view of the suction arrangements of the apparatus of FIGS. 1 and 2,
  • FIG. 4 is a view similar to FIG. 3 of a modification of the apparatus of FIGS. 1 to 3,
  • FIG. 6 is a front elevation of the apparatus of FIG. 5,
  • FIG. 7 is a sectional side elevation of yet another apparatus according to the invention for transferring glass sheets
  • FIG. 8 is a side elevation partly in section of yet another apparatus according to the invention for transferring glass sheets
  • FIG. 9 illustrates the application of one embodiment of suction apparatus according to the invention for transferring glass sheets to a stacking location
  • FIG. 10 is a plan view of the apparatus of FIG. 9,
  • FIG. 11 is a view similar to FIG. 9 of yet another apparatus for transferring glass sheets to a stacking station
  • FIG. 12 is a side elevation showing another embodiment of the invention as applied to the selective stacking of sheets at a plurality of stacking stations
  • FIG. 13 is a side elevation of part of another embodiment of the invention which may be used with a stacking arrangement of the type shown in FIG. 12,
  • FIG. 14 is a half plan view of the part of the embodiment shown in FIG. 13,
  • FIG. 15 is a diagrammatic view of control apparatus used with the embodiment shown in FIGS. 13 and 14,
  • FIG. 16 is a side elevation of another embodiment of the invention for use in stacking glass sheets
  • FIG. 18 is a perspective view of part of the apparatus shown in FIG. 17, and
  • FIG. 19 shows an alternative construction for part of the apparatus shown in FIG. 17.
  • FIGS. 1 and 2 of the drawings there is shown a conveyor for glass sheets comprising a series of rotatable rollers which are driven in known manner and by known means to feed glass sheets supported thereon horizontally to a transfer station generally indicated at 2.
  • the last rollers l constitute a first location from which glass sheets are to be transferred to a second location constituted by the first rollers indicated at 14 of a further conveyor.
  • the conveyor rollers 1 and 14 are carried by a common bed 13.
  • the rollers 14 are also driven so as to convey a sheet when transferred to those rollers rapidly away from the transfer station.
  • a vertically adjustable stacking table or the like may be located below the transfer station 2 so that glass sheets may, when desired, be transferred from the conveyor rollers l to the stack or taken from the stack and transferred to the conveyor rollers 14.
  • rollers 1, 3 and 14 may be of known form, being generally cylindrical with spaced projecting rings of a suitable material for example rubber which engage the glass sheets being fed. The peripheries of the rollers which contact the glass sheets are thus the peripheries of the projecting rings.
  • the rollers may be of plain cylindrical form however.
  • each suction chamber 5 At the transfer station in the space between each pair of successive driven rollers 3 is a suction chamber 5 the lower end of which is shaped as shown in FIG. 1 to fit closely to but not to be in contact with the periphery of the rollers 3.
  • the lower end of each suction chamber has spread hood-like form as shown in FIG. 2.
  • Each suction chamber has a bottom wall formed by horizontal plates 6, shown in FIG. 3 having holes 7.
  • the bottom surface of each plate is at a level slightly above, for example 1.2 mms. above the level of the lowermost point of the peripheries of the rollers 3.
  • the suction chambers 5 communicate through respective ducts 8 to a common suction manifold connected by a duct 10 to a fan unit, not shown.
  • the rollers 3 are driven to rotate in any convenient manner.
  • the bracket 4 is supported from the bed 13 by support struts which have been omitted for the sake of clarity.
  • Glass sheets are fed in spaced succession on the driven roller conveyor 1 to the transfer station. Suction applied to the suction chambers 5 causes a glass sheet S as it travels beneath the rollers 3 at the first location constituted by the end rollers 1 of the driven conveyor, to be suctionally held with its upper face in engagement with the peripheries of the rollers 3.
  • the presence of the sheet near the bottom faces of the suction chambers provides a restriction to air flow offered by the restricted gaps between the glass sheet and the bottom of the first suction chamber, so that a reduced pressure is created over the sheet causing the sheet to be lifted onto the first roller and thereafter to be held against the rollers 3 which are driven to transfer that sheet to be deposited on the rollers 14 at the second location as the sheet moves beyond the effective range of the applied suction and falls under gravity onto the surfaces of the rollers 14.
  • the suction may be temporarily stopped to release the sheet onto a stacking table.
  • the height of the lower surfaces of the rollers 3 above the level of the rollers 1 is dependent on the application to which the apparatus is to be put. If the apparatus is required merely to transfer glass sheets of one set thickness the difference in level between the uppermost points of the peripheries of the rollers 1 and the lowermost points of the peripheries of the rollers 3 is theoretically only the sheet thickness but in practice slightly greater than the sheet thickness. If the apparatus is to transfer sheets of different thicknesses without adjusting the level of the rollers 3 for each thickness then the difference in level is slightly greater than the thickness of the thickest sheets which are to be transferred. If the apparatus is to effect a predetermined lift of the sheet it transfers for example to carry it over an obstacle then the difference in level is set accordingly.
  • the suction applied to the glass sheet is normally sufficient to effect the initial lifting of the sheet into engagement with the driven rollers 3.
  • means may be provided for initially lifting the sheet into effective range of suction action, that is sufficiently close to the lower surfaces of the suction chamber to provide the necessary reduced pressure to draw the sheet into engagement with the rollers 3.
  • the downstream roller or rollers of the conveyor 1 may be mounted for vertical movement to lift a sheet supported thereon into the ambience of the suction at the transfer station as the leading edge of the sheet moves beneath the first of the suction chambers.
  • the disengagement of the sheet from the rollers 3 may be effected solely by gravity as the sheet moves out of the effective range of the applied suction and falls under its own weight for example onto the rollers 14.
  • the deposition of the sheet may be assisted mechanically for example by means of a roller or rollers mounted at the end of the transfer station adjacent the second position slightly below the level of the rollers 3 so that it prises the sheet away from the suction action and removes the restriction to air flow thus breaking the suction action.
  • a downstream roller or rollers may be fixed to the bracket 4 slightly below the level of the rollers 3 or may be mounted on a subsidiary frame which can be moved vertically relative to the brackets 4 to lower those rollers thereby prising the sheet away from the rollers 3.
  • the movement of such a subsidiary frame may be actuated by a limit switch tripped by a leading edge, or released by the clearing edge of the sheet being transferred as it moves beyond the downstream end of the transfer station.
  • the suction may be cut off from at least the downstream suction chamber or chambers when the sheet is beneath those chambers. This cutting off of the suction can be controlled for example by a limit switch actuated by the travelling sheet and operative to open the chamber or chambers to atmosphere.
  • the deposition of a sheet may be pneumatically assisted by a suitably placed air blowing nozzle or nozzles or even by reversing the air flow through at least the downstream chamber or chambers 5 so that air is blown through the bottom of those chambers to break the suction and thereby permit the sheet to fall.
  • This air flow from these chambers would also assist in pushing the sheet downwardly onto the rollers 14 at the second location.
  • FIG. 4 illustrates a modified form of base plate for the suction chambers. Instead of being provided with equi-spaced holes 7, the base plate of each chamber is formed with a slot 15 extending parallel to the rollers 3.
  • FIG. 4 also illustrates additional rollers 16 mounted within the suction chambers 5 with their peripheries projecting slightly through the slots 15 so that the lowermost points of the peripheries of the rollers 16 are level with the lowermost points of the rollers 3.
  • the additional rollers 16 are in some applications desirable to assist in preventing contact between the upper surface of a glass sheet being transferred and the suction chamber 5, particularly when the sheets are relatively thin and therefore flexible.
  • the rollers 16 are driven from the same drive as the rollers 3 or may be idler rollers.
  • rollers 16 are idler rollers a better drive of the glass sheet can usually be achieved if the rollers 16 are set with their lowermost points of their peripheries at a level very slightly above that of the lowermost points of the peripheries of the rollers 3.
  • FIGS. 5 and 6 show another embodiment of transfer apparatus according to the invention comprising a series of rollers 17 similar to the rollers 3 and mounted to be driven together in a series of suction chambers 18 of generally hood-like form.
  • Each roller 17 is mounted in its own suction chamber at a level such that the peripheries of the rollers project slightly through openings 19 in the bases of these suction chambers.
  • the suction chambers are separated in the hood from each other by partitions 18a and the projecting rings of the rollers project through the base openings of the suction chamber.
  • rollers are driven by a suitable chain drive connecting round sprockets 20 on the roller shafts which sprockets are mounted outside the suction hood.
  • the suction chambers 18 communicate with a common canopy 22 leading to a suction duct 23, and the roof of each of the individual suction chambers 18 is formed with a flow restrictor slot 24 of suitable value to prevent unduly high air flow when no glass sheet is present beneath the suction chambers.
  • a flow restrictor slot 24 of suitable value to prevent unduly high air flow when no glass sheet is present beneath the suction chambers.
  • FIG. 7 shows another embodiment of transfer apparatus similar to that of FIGS. 5 and 6.
  • the individual suction chambers are dispensed with and the driven rollers 17 are housed in a common suction hood 18b which forms the downward extension of a canopy 22 leading to the suction duct 23.
  • the rollers 17 are plain cylindrical rollers and are closely spaced with the outer drive rollers adjacent the end walls of the suction hood.
  • the restricted gap between adjacent rollers 17 and between the outer rollers and the end walls of the suction hood act to restrict air flow and thereby prevent undesirably high air flow when no sheet is present beneath the rollers 17.
  • the gaps between the peripheries of adjacent rollers 17 and between those rollers and the end walls of the hood are of a size such that the restriction to air flow afforded thereby is of the same order as that afforded by the gap between the upper surface of a glass sheet being transferred and the lower edges of the walls of the suction hood 18.
  • the rollers 17 may project from the bottom of the suction hood by a distance of about 1.2 mms.
  • FIG. 8 shows how the simplified apparatus of FIG. 7 may be modified to provide more individual suction connection to the spaces between adjacent rollers.
  • An air flow restrictor plate 24 is provided having restrictor holes 240 formed so as to be positioned over the spaces between adjacent rollers and between the end rollers and the end walls of the hood 18.
  • a plurality of flexible flaps 24b are provided mounted on and depending from the plate 24 so as to rest on the drive rollers 17. In this way the spaces between adjacent rollers 17 and between the upstream and downstream rollers and the adjacent end walls of the hood 18 are effectively isolated from each other.
  • the flaps 24b are sufficiently stiff to prevent undue air flow between each flap and the roller on which it rests.
  • Glass sheets are conveyed along a roller conveyor 25 to a position beneath transfer apparatus according to the invention which is generally indicated at 26.
  • This transfer apparatus has the construction illustrated in FIGS. 1 to 3.
  • glass sheets are sucked against the rollers 3 and are transferred thereby in a direction normal to their direction of travel on the conveyor 25 to a second location constituted as a stacking station generally indicated at 27.
  • a receiving table 28 above which the end rollers 3 are mounted on a vertically movable frame 29 which may be moved by an actuating mechanism so that the rollers 3 on the frame 29 project below the level of the lowermost point of the peripheries of the other rollers 3.
  • a fixed stop 30 which has a rubber facing is positioned to be engaged by the leading edge of the sheet being deposited onto the table. This arrests the sheets momentum and to some extent ensures that the sheets are lined up in the stack on the stacking table.
  • the driving connections for the rollers on the frame 29 are arranged to accommodate the vertical movement of the frame.
  • the sheets may be deposited by breaking the suction supply to the downstream suction chambers.
  • glass sheets are fed in succession along the conveyor 25 to the first location beneath the transfer apparatus 26 where a limit switch 40 engaged by the leading edge of each sheet stops the drive to the conveyor 25. Suction is then applied to the transfer apparatus 26 so that the sheet is lifted and suctionally held in engagement with the rollers 3 which are then driven to transfer the sheet to the second location at the stacking station.
  • the sheets fall in turn onto the receiving table 28 and as each sheet is deposited the conveyor 25 is restarted to bring the next beneath the suction transfer apparatus.
  • the table is lowered in known stepwise manner by the thickness of one sheet at a time so that each sheet deposited from the transfer apparatus falls only a short distance and a stack of sheets is gradually built up on the table.
  • a stack When a stack is complete it is removed from the table for packing or warehousing and the table is raised to its uppermost position for the formation of a further stack.
  • other devices for example air jets may be provided to align successive sheets correctly as they are formed into a stack and if desired a separating material for example wood flour may be blown onto the surface of each sheet as it is stacked so as to avoid abrasive friction between successive sheets.
  • the conveyor 25 may feed single sheets in succession or may feed batches of sheets placed sideby-side on the conveyor, each batch comprising a plurality of sheets. In this case the transfer apparatus simultaneously picks up all the sheets of a batch and transfers those sheets in succession to the stacking station.
  • FIG. 11 illustrates a stacking arrangement in which the conveyor 25 is in line with the transfer apparatus and the stacking station.
  • the conveyor 25 is continuously operable and suction is continuously applied to the transfer apparatus which is arranged so that its rollers 3 feed the sheets forwardly at the same speed as the speed of the sheets on the conveyor 25.
  • FIG. 12 illustrates a selective stacking arrangement in which the transfer apparatus 26 extends over a plurality of stacking stations indicated at 31, 32 and 33 at which the sheets are selectively deposited on a size basis.
  • Each station has a detecting device 34 which detects the size of a sheet being fed by the transfer apparatus 26 by engagement of the leading and trailing edges of the sheet.
  • Each detecting device is connected to a control station whose output is connected to means for operating a vertically movable frame 35 carrying the end rollers 3 above each station so that those rollers are movable from a raised position in line with the rest of the transfer rollers 3 to a depressed position below the level of the lowermost points of the peripheries of the other transfer rollers 3.
  • a detector device 34 When a detector device 34 detects that the sheet being transferred is of a size destined for its associated stacking station the control means to which it is connected depresses the associated frame 35 so that the sheet is prised from the suction over the stacking station and deposited at that station.
  • This station selective deposition of sheets may be automatically controlled or may be controlled by an operator from a control panel.
  • One of the stacking stations may be reserved for faulty or damaged sheets and automatic inspecting means may be embodied in the transfer apparatus to detect such sheets and to control the apparatus so that such sheets are deposited at the reserve station.
  • the transfer apparatus 26 in FIGS. 9 may take any of the forms illustrated in FIGS. 1 to 3 or FIGS. 1, 2 and 4 or FIGS. 5 and 6 or FIG. 7 or FIG. 8.
  • FIGS. 9, 10, 1 l and 12 show mechanical arrangements for breaking the suction to release a sheet.
  • FIGS. 13, 14 and show a preferred arrangement in which the deposit of a glass sheet is effected by controlling the suction applied to the sheet.
  • FIG. 13 shows part of a transfer apparatus for use in a selective stacking arrangement of the type shown in FIG. 12 in which a plurality of stacking stations are provided. The part of the apparatus shown in FIG. 13 is for use above one of the stacking stations, similar transfer apparatus being provided above each of the other stacking stations.
  • a succession of glass sheets are moved in the direction of the arrow by the driven transfer rollers 3. The sheets are held against the lower peripheries of the rollers 3 by suction.
  • the rollers 3 are mounted within a suction chamber having a roof 50. Openings 51 and 52 are provided in the roof above the rollers and suction is applied to the openings from a hood (not shown) similar to that used in FIGS. 7 and 8.
  • the rollers 3 are closely spaced so that the gaps between the rollers provide restrictions to the flow of air when there is no glass sheet below the rollers.
  • Mounted on the underside of the roof 50 are a number of flaps 53 pivotally mounted on shafts 49 which may be selectively rotated and held in position by spring plungers 54 (FIG.
  • one flap is lowered, as indicated at 53a, to lie closely adjacent the roller beneath it and thereby effectively seal off a portion of the suction chamber between the flap 53a and a fixed sealing flap 54 located at the end of the suction chamber closely above one of the rollers 3.
  • the flap 53 which is lowered is selected in accordance with the length of glass being used so that the distance between the flaps 54 and 53a is approximately equal to one sheet length.
  • the apparatus includes a number of horizontal channels arranged side by side in one integral unit, each channel being as shown in FIG. 13.
  • FIG. 14 shows only half the width of the entire apparatus and this half includes four channels 60, 61, 62 and 63.
  • Vertical partitions 64, 65 and 66 extend horizontally and provide separate suction chambers for the various channels.
  • the dampers 56 for each channel are mounted on a common shaft and the shafts 49 for the pivoted flaps 53 extend across all the channels. In this way the position of the dampers S6 and flaps 53 is always the same in each channel.
  • the spacing between the partitions 64, 65 and 66 is one half the narrowest sheet width to be handled so that for all sheets used, at least half the sheet area is subject to the suction action.
  • FIG. 16 is basically similar to that shown in FIG. 8.
  • Each roller 3 in the hood, except the first roller 3a has associated with it a flexible felt flap 80 engaging the periphery of the roller so as to provide a separate suction chamber with a separate suction aperture for each roller.
  • the first roller 3a is a driven roller but it is narrow and is tyred.
  • Above the roller 3a is an opening 81 providing very low restriction to air flow. In operation, as a glass sheet travels beneath the rollers in the direction of the arrow A, it bridges the gap between the first roller 3a and the next roller 3, and thereby provides a restriction to air flow so that suction is applied over all the rollers and the sheet is suctionally held thereto.
  • FIG. 17 shows a further embodiment in which the suction is released by passage of the trailing edge of the sheet over the first roller in the suction chamber.
  • the operation is generally similar to that described with reference to FIG. 16.
  • the damper is provided on the first roller 3b which is shown more clearly in FIG. 18.
  • the roller 3b comprises two freely rotatable discs 85 and 86 with the valve damper plate 87 located between them.
  • a pneumatic cylinder 88 and crank connection is provided to move the plate 87 between open and closed positions.
  • An adjustable low restriction opening 90 is provided above the first roller 3b. With the damper 87 open, air flows past the plate 87 when the trailing edge of a sheet clears it, thereby releasing the vaccum over the rollers 3 and permitting the sheet to drop onto the stack.
  • the damper When the damper is closed, or nearly closed, a high restriction to air flow is provided and the sheet does not drop off.
  • the previously described size adjusting flaps 53 are replaced by an adjustment rod 91 carrying a baffle 92 at one end.
  • the rod is moved axially to locate the baffle 92 at the required position depending on the length of sheet being used.
  • the baffle 92 thereby separates the suction chamber into two parts. One part has the aperture 90 and the second part has an adjustable suction aperture 93 on the opposite side of the baffle 92. Suction is not released in the second part of the suction chamber when the sheet drops off onto the stack.
  • the first roller 3b is not driven.
  • the roller 3b of FIGS. 17 and 18 may be replaced by the arrangement shown in FIG. 19.
  • the first roller 3c is driven and is a smooth cylinder the same as the other rollers 3.
  • the damper valve plate 94 is located between the first and second rollers so that it can be operated to increase the restriction to air flow when a sheet is to be transferred and not deposited.
  • the operation of the modification shown in FIG. 19 is otherwise the same as already described with reference to FIG. 17.
  • FIGS. 16-19 may be used in selective stacking arrangements with a plurality of stacking stations of the type shown in FIG. 12.
  • the complete apparatus includes a number of parallel channels with partitions providing separate suction chambers spaced across the conveyor, as is described with reference to FIG. 14.
  • the invention thus provides an improved glass sheet transferring apparatus for particular application in automatic warehousing for the selection and stacking of glass sheets on a size selective basis.
  • Apparatus for transferring sheets of glass across an open space defining a transfer path from a first location to a to a second location comprising:
  • suction means mounted above the transfer path and extending between those locations;
  • a series of driven rollers mounted in the suction means at a level to project below the bottom of the suction means and each extending transversely of the transfer path, the extent of which projection is such that when a sheet is drawn by suction against the driven rollers the gap between the upper face of the sheet and the bottom of the suction means constitutes an air flow restrictor which creates reduced pressure over the sheet to suctionally hold the sheet against the rollers;
  • air flow restriction means in the suction means to restrict the flow of air drawn between said driven rollers in the absence of a sheet
  • said suction means comprising a suction hood in the bottom of which said series of driven rollers are housed, the hood having an open bottom through which the driven rollers project;
  • suction control means operable to cut off the suction when a sheet has been transferred to a required second location so that the sheet drops away from the drive elements at that location;
  • actuating means arranged to be actuated by movement of a sheet to the second location
  • valve means controlled by the actuating means for cutting off the suction in only a part of the suction hood associated with the second location so as to release the sheet when it has reached the second location.
  • Apparatus for transferring sheet material from a first location to a second location comprising:
  • a suction hood mounted above the transfer path between those locations which hood has an open bottom
  • a damper member located in an aperture connecting said release chamber to the main part of the suction hood
  • suction release actuating means connected to the damper means and including a switch device positioned in the transfer path for operation by a sheet as it advances to the second location to cause the actuating means to close the damper member thereby cutting off the suction only in the release chamber so as to release the sheet when it has reached the second location.
  • Apparatus for transferring sheet material from a first location to a second location comprising:
  • a suction duct connected to the suction hood for applying suction to the hood to create a reduced pressure over a sheet
  • rollers being mounted in closely spaced relationship with the outer driven rollers adjacent the end walls of the hood, and
  • a selectively operable restricting device mounted to restrict said passage when it is required to transfer a sheet past the second location.
  • Apparatus according to claim 3 in which the said one roller in the suction hood comprises two spaced disc members together with an adjustable damper member between them, the damper being adjustable to alter the restriction of the air flow passage between the disc members.
  • Apparatus for transferring sheet material from a first location to a second location comprising:
  • a suction duct connected to the suction hood to create a reduced pressure over a sheet and thereby draw the sheet against the driven rollers for advancing thereby along the transfer path
  • suction control means to release the suction when a sheet has been transferred to a required second location so that the sheet drops away from the driven rollers at that location, including a. a plate mounted across the hood above the rollers which plate has formed therein at spaced intervals suction paths to the chamber thereby defined in the hood below the plate,
  • baffle flaps each pivoted to the plate above one of the rollers, which flaps are selectively movable to close the space between the plate and the roller above which it is pivoted, and thereby subdivide said chamber, the flap moved to the closed position being selected so that the part of said chamber in which suction is released is of length dependent on the length of the sheet being transferred.
  • Apparatus for transferring sheet material from a 30 first location to a second location comprising:
  • a suction duct connected to the suction hood to create a'reduced pressure over a sheet and thereby draw the sheet against the driven rollers for advancing thereby along the transfer path
  • suction control means to release the suction when a sheet has been transferred to a required second location so that the sheet drops away from the driven rollers at that location, including a. a plate mounted across the hood above the rollers which plate has formed therein at spaced intervals suction paths to the chamber thereby defined in the head below the plate,
  • a slidable baffle member located between the tops of the rollers and said plate and adjustable in position along the succession of rollers to subdivide said chamber so that the part of said chamber in which suction is released is of length dependent on the length of the sheet being transferred.
  • Apparatus for transferring sheet material from a first location to a seocnd location comprising:
  • a suction duct connected to the suction hood for applying suction to the hood to create a reduced pressure over a sheet and thereby draw the sheet against the. driven rollers for advancing thereby along the transfer path,
  • actuating means connected to said means for vertically moving the last drive roller arranged in the transfer path to be tripped by a sheet being transferred towards the second location to initiate the lowering of said last drive roller so that the sheet is deposited at the second location.
  • Apparatus for transferring sheets of glass across an open space defining a transfer path from a first location to a second location comprising:
  • a suction hood mounted above the transfer path between those locations, which hood has an open bottom;
  • a suction duct connected to the suction hood for applying suction to the hood to create a reduced pressure over a sheet and thereby draw the sheet against the driven rollers for advancement along the transfer path;
  • actuating means arranged to be actuated by movement of a sheet to the second location
  • valve means controlled by the actuating means and associated with said separate release chamber for cutting off the suction in in the release chamber to release a sheet which thereby drops away from the driven rollers at the second location.
  • the suction hood comprises a plurality of suction chambers each having an open bottom which embraces a driven roller which is thereby housed within its suction chamber and projects through the open bottom of its chamber, each chamber being roofed by an apertured plate which comprises air flow restriction means.
  • Apparatus for transferring sheet material from a first location to a second location comprising:
  • a suction hood mounted above the transfer path between those locations, which hood has an open bottom;
  • roller means including a series of driven rollers mounted in the open bottom of the suction hood and projecting through that open bottom, each roller extending transversely of the transfer path;
  • a suction duct connected to the suction hood for applying suction to the hood to create a reduced pressure over a sheet and thereby draw the sheet against the driven rollers for advancement along the transfer path;
  • suction control means icluding a low resistance suction air flow passage adjacent an end roller, the low resistance air flow passage cooperable with the suction hood, and responsive to the position of a sheet for selectively creating and releasing suction in a portion of the suction hood, and the suction control means being operable during continuous application of suction to the hood by the suction duct.
  • driven rollers are cylindrical rollers mounted in closely spaced relationship with the outer driven rollers adjacent the end walls of the suction hood, the restricted gaps between adjacent driven rollers and between the outer driven rollers and the end walls of the hood acting to restrict air flow and prevent undesirably high air flow when no sheet is present beneath the driven rollers.
  • Apparatus as claimed in claim 12 in which a low resistance air flow passage is provided adjacent one driven roller at the beginning of the path through the suction hood so that suction is applied when a sheet bridges the low resistance passage adjacent the said one roller but is released when the trailing edge of the sheet passes the said one roller, thereby depositing the sheet at the second location.
  • Apparatus according to claim 14 in which a low resistance air flow passage is provided adjacent one roller at the beginning of the path through the hood so that suction is applied when a sheet bridges the low resistance passage but is released when the trailing edge of the sheet passes the said one roller.
  • suction control means is operable to cut off the suction when a sheet has been transferred to a required second location so that the sheet drops away from the driven rollers at that location.
  • Apparatus according to claim 16 in which a plate is mounted across the hood above the rollers, suction paths being provided at spaced positions to the chamber below the plate, and baffle means being interposable between a selected roller and the plate between the said suction paths so as to subdivide the suction chamber below the plate and prevent suction being released in one part of the chamber when suction is released in the other part of the chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
US00073032A 1969-09-19 1970-09-17 Apparatus for transferring sheet material Expired - Lifetime US3848752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4640969 1969-09-19

Publications (1)

Publication Number Publication Date
US3848752A true US3848752A (en) 1974-11-19

Family

ID=10441142

Family Applications (1)

Application Number Title Priority Date Filing Date
US00073032A Expired - Lifetime US3848752A (en) 1969-09-19 1970-09-17 Apparatus for transferring sheet material

Country Status (11)

Country Link
US (1) US3848752A (ko)
JP (1) JPS5118705B1 (ko)
BE (1) BE756334A (ko)
CA (1) CA928347A (ko)
DE (1) DE2046237A1 (ko)
ES (1) ES383775A1 (ko)
FR (1) FR2064815A5 (ko)
GB (1) GB1303056A (ko)
NO (1) NO136745C (ko)
SE (1) SE373813C (ko)
ZA (1) ZA706295B (ko)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019731A (en) * 1975-07-23 1977-04-26 Vits-Maschinenbau Gmbh Device for placement of rhythmically conveyed sheets on a stack
US4019938A (en) * 1976-01-14 1977-04-26 United States Mineral Products Company Apparatus and process for manufacturing insulation board
US4781205A (en) * 1987-05-27 1988-11-01 Chemcut Corporation Product guide for processing equipment
US4909500A (en) * 1987-03-28 1990-03-20 Heidelberger Druckmaschinen Ag Device for conveying sheets, for example paper sheets
US5004221A (en) * 1988-10-12 1991-04-02 Bobst Sa Device for conveying plate-like matter within a rotary printing machine
US5009409A (en) * 1988-08-15 1991-04-23 Shell Oil Company Method and apparatus for manipulation of fabric
US5035568A (en) * 1988-12-19 1991-07-30 Joulin Aero Distribution S.A.R.L. Suction gripper device and object transfer device
US5509352A (en) * 1994-09-23 1996-04-23 Ward Holding Company Paperboard processing machine with vacuum transfer system
US5857394A (en) * 1995-08-09 1999-01-12 Texo S.R.L. System for vacuum-refeeding sheets, in particular corrugated board sheets, to be used in printing and die cutting machines
US20100232915A1 (en) * 2009-03-13 2010-09-16 Semiconductor Technologies & Instruments Pte Ltd Apparatus For Handling A Semiconductor Component
WO2013074928A1 (en) * 2011-11-18 2013-05-23 Nike International Ltd. Manufacturing vacuum tool
US8696043B2 (en) 2011-11-18 2014-04-15 Nike, Inc. Hybrid pickup tool
US20140102852A1 (en) * 2012-10-17 2014-04-17 Shenzhen China Star Optoelectronics Technology Co., Ltd. Substrate transfer system and substrate positioning device
US8858744B2 (en) 2011-11-18 2014-10-14 Nike, Inc. Multi-functional manufacturing tool
US8958901B2 (en) 2011-11-18 2015-02-17 Nike, Inc. Automated manufacturing of shoe parts
US8960745B2 (en) 2011-11-18 2015-02-24 Nike, Inc Zoned activation manufacturing vacuum tool
US9010827B2 (en) 2011-11-18 2015-04-21 Nike, Inc. Switchable plate manufacturing vacuum tool
US20150344234A1 (en) * 2014-05-30 2015-12-03 Boe Technology Group Co., Ltd. Rotating apparatus
US9776809B1 (en) 2016-03-31 2017-10-03 Core Flow Ltd. Conveying system with vacuum wheel
US10667581B2 (en) 2011-11-18 2020-06-02 Nike, Inc. Automated identification and assembly of shoe parts
US11317681B2 (en) 2011-11-18 2022-05-03 Nike, Inc. Automated identification of shoe parts
US11341291B2 (en) 2011-11-18 2022-05-24 Nike, Inc. Generation of tool paths for shoe assembly
US11346654B2 (en) 2011-11-18 2022-05-31 Nike, Inc. Automated 3-D modeling of shoe parts
CN116197419A (zh) * 2023-04-18 2023-06-02 霖鼎光学(江苏)有限公司 一种高精度隐形眼镜车削装置
CN117446500A (zh) * 2023-12-25 2024-01-26 成都中嘉微视科技有限公司 一种调节系统及可调式调节机构

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7514476U (de) * 1975-05-06 1976-02-26 Ab Svenska Flaektfabriken, Nacka (Schweden) Transportoer fuer plattenfoermiges material
US4112706A (en) * 1976-09-13 1978-09-12 Brister Beryle D Apparatus for freezing a slug of liquid in a section of a large diameter fluid transmission line
NZ189642A (en) * 1978-02-20 1983-02-15 Pilkington Brothers Ltd Apparatus for transferring sheet material
FR2597855A1 (fr) * 1986-04-29 1987-10-30 Saint Gobain Vitrage Transfert de plaques de verre en vue de leur bombage
DE102017115854B4 (de) * 2017-07-14 2019-03-21 BIBA - Bremer Institut für Produktion und Logistik GmbH Manipulationsgreifer, Manipulationsgreifersystemmodul und modulares Manipulationsgreifersystem aus demselben

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183798A (en) * 1938-11-28 1939-12-19 Continental Steel Corp Sheet catching and stacking mechanism
US3272351A (en) * 1963-01-25 1966-09-13 Crown Zellerbach Canada Ltd Sheet handling apparatus
US3287010A (en) * 1965-03-03 1966-11-22 Ncr Co Strip transfer means for randomaccess systems
US3347396A (en) * 1964-05-04 1967-10-17 Hohl Machine & Conveyor Co Inc Stacking device
US3391926A (en) * 1966-04-27 1968-07-09 Jaatinen Per Arno Device for removing sheets or plates from a pile one by one
US3463483A (en) * 1967-07-18 1969-08-26 Potlatch Forests Inc Vacuum process and apparatus for transferring sheets
US3533518A (en) * 1969-04-09 1970-10-13 Potlatch Forests Inc Vacuum feeder for plywood veneer core sheets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183798A (en) * 1938-11-28 1939-12-19 Continental Steel Corp Sheet catching and stacking mechanism
US3272351A (en) * 1963-01-25 1966-09-13 Crown Zellerbach Canada Ltd Sheet handling apparatus
US3347396A (en) * 1964-05-04 1967-10-17 Hohl Machine & Conveyor Co Inc Stacking device
US3287010A (en) * 1965-03-03 1966-11-22 Ncr Co Strip transfer means for randomaccess systems
US3391926A (en) * 1966-04-27 1968-07-09 Jaatinen Per Arno Device for removing sheets or plates from a pile one by one
US3463483A (en) * 1967-07-18 1969-08-26 Potlatch Forests Inc Vacuum process and apparatus for transferring sheets
US3533518A (en) * 1969-04-09 1970-10-13 Potlatch Forests Inc Vacuum feeder for plywood veneer core sheets

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019731A (en) * 1975-07-23 1977-04-26 Vits-Maschinenbau Gmbh Device for placement of rhythmically conveyed sheets on a stack
US4019938A (en) * 1976-01-14 1977-04-26 United States Mineral Products Company Apparatus and process for manufacturing insulation board
US4909500A (en) * 1987-03-28 1990-03-20 Heidelberger Druckmaschinen Ag Device for conveying sheets, for example paper sheets
US4781205A (en) * 1987-05-27 1988-11-01 Chemcut Corporation Product guide for processing equipment
US5009409A (en) * 1988-08-15 1991-04-23 Shell Oil Company Method and apparatus for manipulation of fabric
US5004221A (en) * 1988-10-12 1991-04-02 Bobst Sa Device for conveying plate-like matter within a rotary printing machine
US5035568A (en) * 1988-12-19 1991-07-30 Joulin Aero Distribution S.A.R.L. Suction gripper device and object transfer device
US5509352A (en) * 1994-09-23 1996-04-23 Ward Holding Company Paperboard processing machine with vacuum transfer system
US5857394A (en) * 1995-08-09 1999-01-12 Texo S.R.L. System for vacuum-refeeding sheets, in particular corrugated board sheets, to be used in printing and die cutting machines
US9620398B2 (en) * 2009-03-13 2017-04-11 Semiconductor Technologies & Instruments Pte Ltd Apparatus for handling a semiconductor component
US20100232915A1 (en) * 2009-03-13 2010-09-16 Semiconductor Technologies & Instruments Pte Ltd Apparatus For Handling A Semiconductor Component
US11317681B2 (en) 2011-11-18 2022-05-03 Nike, Inc. Automated identification of shoe parts
US10610958B2 (en) 2011-11-18 2020-04-07 Nike, Inc. Multi-functional manufacturing tool
US8858744B2 (en) 2011-11-18 2014-10-14 Nike, Inc. Multi-functional manufacturing tool
US11911893B2 (en) 2011-11-18 2024-02-27 Nike, Inc. Manufacturing tool
US8958901B2 (en) 2011-11-18 2015-02-17 Nike, Inc. Automated manufacturing of shoe parts
US8960745B2 (en) 2011-11-18 2015-02-24 Nike, Inc Zoned activation manufacturing vacuum tool
US9010827B2 (en) 2011-11-18 2015-04-21 Nike, Inc. Switchable plate manufacturing vacuum tool
US11879719B2 (en) 2011-11-18 2024-01-23 Nike, Inc. Automated 3-D modeling of shoe parts
US9238305B2 (en) 2011-11-18 2016-01-19 Nike, Inc. Switchable plate manufacturing vacuum tool
US9403280B2 (en) 2011-11-18 2016-08-02 Nike, Inc. Manufacturing vacuum tool
US8696043B2 (en) 2011-11-18 2014-04-15 Nike, Inc. Hybrid pickup tool
US11763045B2 (en) 2011-11-18 2023-09-19 Nike, Inc. Generation of tool paths for shoe assembly
US11641911B2 (en) 2011-11-18 2023-05-09 Nike, Inc. Automated identification and assembly of shoe parts
US9937627B2 (en) 2011-11-18 2018-04-10 Nike, Inc. Manufacturing vacuum tool with selective activation of pickup zones
US9937585B2 (en) 2011-11-18 2018-04-10 Nike, Inc. Multi-functional manufacturing tool
US10272518B2 (en) 2011-11-18 2019-04-30 Nike, Inc. Multi-functional manufacturing tool
US10532468B2 (en) 2011-11-18 2020-01-14 Nike, Inc. Manufacturing vacuum tool with selective activation of pickup zones
US11422526B2 (en) 2011-11-18 2022-08-23 Nike, Inc. Automated manufacturing of shoe parts
US10667581B2 (en) 2011-11-18 2020-06-02 Nike, Inc. Automated identification and assembly of shoe parts
US10671048B2 (en) 2011-11-18 2020-06-02 Nike, Inc. Automated manufacturing of shoe parts
US11266207B2 (en) 2011-11-18 2022-03-08 Nike, Inc. Automated identification and assembly of shoe parts
US11273514B2 (en) 2011-11-18 2022-03-15 Nike, Inc. Multi-functional manufacturing tool
WO2013074928A1 (en) * 2011-11-18 2013-05-23 Nike International Ltd. Manufacturing vacuum tool
US11341291B2 (en) 2011-11-18 2022-05-24 Nike, Inc. Generation of tool paths for shoe assembly
US11346654B2 (en) 2011-11-18 2022-05-31 Nike, Inc. Automated 3-D modeling of shoe parts
US11389972B2 (en) 2011-11-18 2022-07-19 Nike, Inc. Manufacturing tool with selective activation of pickup zones
US20140102852A1 (en) * 2012-10-17 2014-04-17 Shenzhen China Star Optoelectronics Technology Co., Ltd. Substrate transfer system and substrate positioning device
US8939275B2 (en) * 2012-10-17 2015-01-27 Shenzhen China Star Optoelectronics Technology Co., Ltd. Substrate transfer system and substrate positioning device
US20150344234A1 (en) * 2014-05-30 2015-12-03 Boe Technology Group Co., Ltd. Rotating apparatus
WO2017168406A1 (en) * 2016-03-31 2017-10-05 Core Flow Ltd. Conveying system with vacuum wheel
US9776809B1 (en) 2016-03-31 2017-10-03 Core Flow Ltd. Conveying system with vacuum wheel
CN116197419A (zh) * 2023-04-18 2023-06-02 霖鼎光学(江苏)有限公司 一种高精度隐形眼镜车削装置
CN116197419B (zh) * 2023-04-18 2023-12-29 霖鼎光学(江苏)有限公司 一种高精度隐形眼镜车削装置
CN117446500A (zh) * 2023-12-25 2024-01-26 成都中嘉微视科技有限公司 一种调节系统及可调式调节机构
CN117446500B (zh) * 2023-12-25 2024-03-29 成都中嘉微视科技有限公司 一种可调式调节系统

Also Published As

Publication number Publication date
ES383775A1 (es) 1973-06-01
JPS5118705B1 (ko) 1976-06-11
NO136745B (ko) 1977-07-25
SE373813B (ko) 1975-02-17
FR2064815A5 (ko) 1971-07-23
SE373813C (sv) 1979-11-26
CA928347A (en) 1973-06-12
DE2046237A1 (de) 1971-04-01
NO136745C (no) 1977-11-02
BE756334A (fr) 1971-03-18
ZA706295B (en) 1971-05-27
GB1303056A (ko) 1973-01-17

Similar Documents

Publication Publication Date Title
US3848752A (en) Apparatus for transferring sheet material
US4651984A (en) Method of and apparatus for accurate-register sheet transport in a printing machine
US3680677A (en) Conveying of glass sheets
US2813637A (en) Shingle take off and stacker
US4085927A (en) Apparatus for gathering folded sheets in bookbinding machines
US4192496A (en) Apparatus for feeding case blank sheets
US5441252A (en) Method for separating and stacking lanes of sheets
GB964394A (en) Process and apparatus for collating sheets
US5499806A (en) Collating machine
US4090618A (en) Device for inserting spacing strips between boards to be stacked
US2947428A (en) Machine for stacking paper including oppositely withdrawable adjacent stack supports
US3080043A (en) Apparatus for conveying and stacking articles
US2645329A (en) Mechanism for handling boards
US6189884B1 (en) Apparatus for forming a gap in a scale-like sheet flow
US7497067B2 (en) Device for packing flat articles in transport containers
US6973766B2 (en) Device for packing flat articles in transport containers, particularly folded-flat folding boxes in casing cartons
JP3271712B2 (ja) 層状単位用のコンベア装置と層状単位を運搬および排出する方法
US3941370A (en) Sheet glass - conveying, classifying and stacking apparatus
JP2875238B2 (ja) 枚葉紙をパイル上に排紙するための装置
US3519144A (en) Stacking system for paperboard blanks
US3025057A (en) Continuous layboy
US3941371A (en) Sheet glass conveying, classifying & stacking apparatus
US3613886A (en) Feeder and stacker
US20020060128A1 (en) Method of and apparatus for removing selected stacks of superimposed sheets from a conveyor
US3587830A (en) Stacking system for paperboard blanks