US3327873A - Apparatus and method for feeding lifts of limp sheets - Google Patents

Apparatus and method for feeding lifts of limp sheets Download PDF

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Publication number
US3327873A
US3327873A US379613A US37961364A US3327873A US 3327873 A US3327873 A US 3327873A US 379613 A US379613 A US 379613A US 37961364 A US37961364 A US 37961364A US 3327873 A US3327873 A US 3327873A
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United States
Prior art keywords
lift
sheets
stack
magazine
lifts
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Expired - Lifetime
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US379613A
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English (en)
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Malamood Herman
Malamood Abraham
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Individual
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Priority to US379613A priority Critical patent/US3327873A/en
Priority to GB27652/65A priority patent/GB1110257A/en
Priority to DEM65754A priority patent/DE1302083B/de
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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
    • B65H3/32—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile
    • B65H3/322—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile for separating a part of the pile, i.e. several articles at once
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
    • B65H2301/42322—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile

Definitions

  • the invention particularly relates to the feeding of limp, flexible sheets of paper or the like of the type which would crumple, tear and otherwise respond disadvantageously if fed by conventional mechanism.
  • Single sheets such as box blanks, single articles such as collapsed cartons and single packages such as filled mailing envelopes, usually have enough resistance to bending to be fed individually from a magazine by a pusher blade, endless conveyor lugs, rotating friction wheels or movable suction cups. .Double feeding in such apparatus is undesirable. However, in this invention, multiple feeding is the principal objective, since the apparatus is primarily intended for the purpose of simultaneously feeding, for example, ten or more flimsy paper sheets in a unit, so that the unit may be passed through a punching, trimming, binding or similar treatment.
  • Such units, or groups, of limp, flexible, flimsy sheets are called lifts herein and the sheets are usually of relatively small area such as are suitable for the printing and publishing art to be assembled into books, calendars or the like.
  • the lifts are not contained in a folded outer sheet as in a signature, or bound at one edge, or provided with one extra long sheet usable for vacuum separation purposes, such packages being relatively easy to handle.
  • the sheets in the lifts which are handled by the invention herein, are identical in dimensions, unconnected, unbound and without separators, thereby presenting a diflicult problem of accurate separation, segregation and withdrawal.
  • Another object of the invention is to provide an automatic feeder capable of handling up to ninety thousand sheets per hour without danger of damaging the same and without danger of jamming of the feeder.
  • Still another object of the invention is to provide apparatus for depositing individual and successive lifts of limp paper sheets on the feed conveyor of an automatic punching device, the sheets in each lift being free of edge marks, uncrumpled and automatically jogged into flush alignment of the edges, by urging the upper edges downwardly toward a lower side gauge in cooperation with gravity.
  • FIGURE 1 is an elevation of an automatic punching apparatus, from the rear, showing the feeding apparatus of this invention incorporated therein,
  • FIGURE 2 is a plan view of the device shown in FIGURE 1,
  • FIGURE 3 is an enlarged, fragmentary end elevation of the mechanical lift separation and segregation means and lift gripping mechanism of the invention
  • FIGURE 4 is an end elevation of the device of FIG- URES 1 and 2, on the same scale, showing the nippers closed on a lift,
  • FIGURE 5 is a view similar to FIGURE 4 showing the nippers releasing an extracted lift
  • FIGURE 6 is an enlarged fragmentary end elevation of the pivoted separation and segregation element
  • FIGURE 7 is a rear view thereof
  • FIGURE 8 is an enlarged fragmentary view of the cam mechanism for controlling the action of the nippers.
  • FIGURE 9 is an enlarged, fragmentary end elevation of the lateral jogger mechanism.
  • FIGURES 1, 2, 4 and 5 an automatic punching machine 20 is shown, as exemplary of the type of machine in which the lift feeding apparatus 21 of this invention is intended to be used. All of the machine 20, except the lifting feeding apparatus claimed herein is shown and described in detail in our co-pending US. patent application, Ser. No. 230,929, filed Oct. 16, 1962, now Patent No. 3,215,014, and entitled Feeding Apparatus for Lifts of Limp Sheets. In that application an endless conveyor feeds the lifts to the punching apparatus and in this application the lifts are automatically fed from a hopper onto the endless conveyor.
  • the automatic punching machine 20 includes the frame and housing 22, the lift feeding zone 23, the lift treatment zone 24 and the lift discharge zone 25.
  • the paper line 26 of machine 20 is preferably titled so that the lifts advanced therealong by the upper stretches '27 and 28 of the endless lift conveyors 29 and 30 will tend to slide by gravity toward the upstanding side guage 33 for alignment of the side edges of the sheets in each lift before arrival in the treatment zone.
  • the endless conveyors 2-9 and 30, and the other parts of machine 20 are driven in synchronization by power trains forming no part of this invention, there being a main, longitudinally extending powered drive shaft 34 rotated by reducer 35 and motor 36 by means of power train 37.
  • Conveyors 29 and 30 are shown as registration chains, with spaced upstanding lugs 38 because in the particular machine illustrated intermittent drive and timed registration is desirable.
  • the feed apparatus 21 may be used with any type machine to deliver lifts onto any type conveyor such as untimed carrier belts if desired.
  • MAGAZINE MEANS An upstanding stack 49 of sheets 41 is supported in a sheet magazine, or hopper, 42 which preferably is of the gravity actuated, bottom feed type. While the sheets 41 can be of any material with any desired characteristics, it will be apparent that if they were relatively stiff with resistance to bending, conventional pusher elements could probably successfully expel each successive bottommost lift by pressure on the trailing edges. However, the sheets 41, in this invention can be relatively thin, limp, flimsy, flexible paper usable as paper in a school notebook, commercial calendars, or even sheets of tracing paper.
  • the magazine 42 is tiltably mounted on the machine 20, in feeding zone 23 by a pair of brackets 43, having suitable arcuate slots 44 and tightening bolts 45 so that the magazine bottom 46 may be at any desired angle relative to paper line 26 within a range of about 20.
  • bottom 46 is parallel to the tilted paper line 26 and alongside the path of the lifts on the conveyors 29 and 30, on the same side thereof as the upstanding gauge 33, there being a lift feed gateway 47 in the forward portion of the at bottom proximate, and slightly above the side gauge 33.
  • the brackets 43 include the hinge pivot 48 for the bottom, or bed plate, 46.
  • the magazine 42 has adjustable side guides 49, an adjustable back plate 51 and a forward wall '52 which includes the upstanding stop strips 53 and a cross bar 54.
  • the side guides 49 and back plate 52 may be adjusted, in a well known manner, to suit the size of the paper to be treated in the machine 20.
  • the pivot 48 coincides with the bottom front, or leading, edge 55 of the paper sheets in the magazine and with the feed gateway 47.
  • the mechanical lift separation and segregation means 57 of the invention includes stack splitter means in the form of an elongated stack splitter element 58, having its upper end pivoted to the cross bar 54 as hinge pivot 59, and having a rearwardly projecting, sharp-edged, hooked barb 60 at its lower free terminal end.
  • a suitable spring 62 spring loads the splitter element outwardly and the element 58 is preferably in two overlying slidable parts so that its length may be adjusted by the wingnut screw 63 to split off a lift of any desired thickness from the bottom of the stack. 7
  • the fiat face 64 of the element 58 moves into contact with the forward edges 65 of the stack 40, with each oscillation of the element to serve as a movable magazine front wall for confining the sheets while the bottommost lift is pulled out from under the stack.
  • the upper face 66 of the barb 60 is at right angles to the face 64 so that it is substantially parallel to the sheets in the stack when moved thereint-o, but the lower face 67 of the barb is inclined, and provided centrally with an inclined projecting central flange 68 of greater inclination.
  • the sharp edge 69 of the barb enters the stack, at a predetermined distance from the end of the stack formed by bottom 46 to split off each successive endmost, or bottommost lift 71 with the inclined flange 68 turning the leading edges 55 of the lift downwardly around the leading edge 72 of the magazine bottom 46 and away from the sheets of the next successive lift 73 of the stack.
  • the lift extraction means 75 of the invention includes a carriage 76 movable toward and away from the magazine 42 by an endless chain 77, trained around spockets 78 and 79 in a frame piece 80, extending across the machine 20 and supported by the bracket 81.
  • the carriage 76 is connected to the lower stretch '82 of chain 77 and the lower stretch reciprocates by mechanism to be described hereinafter.
  • a stationary nipper member 84 projects from carriage 76 toward the magazine 42 and downwardly toward the gateway 47 and a movable nipper member 85 is pivoted thereto at 86 so that the nipper jaws 87 and 88 may enter the gateway 47 to clamp on the opposite faces 89 and 90 of the downturned leading edge portions 72 of each successive lift.
  • the barb 60 has provided the opening 92 in the stack for the entrance of the upper jaw 87 as explained above. While a solenoid could be used to actuate the splitter element 58, it is preferred to provide a rubber impact plate 93 on the element 58 and a plunger 94 on the cross feed carriage 76 to actuate the same.
  • Plunger 94 is backed up by a spring 95, in a tubular housing 96, the spring compressing to allow the nipper jaws to continue on into the gateway 47 into position to clamp onto the lift.
  • nipper jaws 87 and 88 reach clamping position (FIG. 4) they are closed under the action of the nipper jaw spring 97 by signal from the cam mechanism of FIGURE 8, which de-energizes the solenoid 98.
  • Solenoid 98 actuates the nipper jaw member 88 by the bell crank lever 99 pivoted at 100 to the carriage 76 and pivoted to the armature 101 of the solenoid at 102.
  • the carriage 76 then moves away from the magazine 42, across the paper line 26, while extracting the' limp flexible lift from under the stack and pulling the lift across and above the endless conveyors 29 and 30, in a rectilinear path parallel to the plane of the sheets in the stack and in parallelism with the plane of the paper line.
  • the cam mechanism of FIGURE 8 causes solenoid 98 to be energized, thereby pivoting lever 99 and opening the nipper jaws 87 and 88 to unclamp the leading edge portion of the lift.
  • the leading edge portion 72, of the so released lift preferably strikes an impact target element 104 in the path thereof, which causes the lift to be deposited in the desired position on the upper stretches 27 and 28 of endless conveyors 29 and 30 for advancement along paper line 26, for example by chain lugs 38.
  • nipper jaws 106 preferably another set of nipper jaws 106, jaw actuating mechanism 107 and another target 108 are provided, so that the extraction operation is balanced on each opposite side of the splitter element.
  • the targets 104 and 107 are preferably curved as shown and each is mounted at the lower end of a hanger 108 de pending from a block 109 slidable on a rod 110 extending along frame piece 80, there being suitable set screws 111 and 112 for adjustability of the target.
  • an upstanding side gauge 115 is mounted on paper line 26, on the opposite side therefrom side gauge 33, the side gauge 115 being laterally shiftable to consti tute a jogger in the feed zone 23.
  • the gauge, or jogger 115 is mounted on a rod 116 slidably and rectilinearly movable in suitable bearings, transversely of machine 20, the rod being spring loaded at 117 in a direction toward the opposite side gauge 33 but moved away from the gauge 33 by a cam 118 rotated by a power train 119 from the main drive shaft 34.
  • the gauge, or jogger 115 is thus synchronized to spring toward gauge 33 to impact the adjacent edges of a lift as the lift advances thereby, under spring controlled pressure, and to align the adjacent edges of the sheets in the lift in cooperation with, and against, the side gauge 33.
  • the trailing edges of the lift are aligned by, and being pushed by, the chain lugs and the gauge 115 stops short of a position in which it might bind the edges of the lift between the gauges.
  • ACTUATING MEANS The various operating parts of the feed apparatus 21, derive their mechanical power from drive shaft 34.
  • the cam mechanism of FIGURE 8 is mounted on the shaft 124 and comprises a double earn 125 formed by the relatively rotatable earns 126 and 127.
  • Each cam 126 and 127 includes a projection at 128 and 129 so that by suitable angular adjustment of the cams on the shaft the length of the cam path can be shorter or longer.
  • a roller follower 131 rides on the cams and is carried by the arm 132 of a limit switch 133, so that the limit switch is actuated by the rotating projections for as long as the projections remain in contact with the roller follower.
  • the switch 133 energizes and deenergizes the solenoids 98, in the desired synchronization, as explained above, and by a suitable circuit including a source of power and the helical cable 134.
  • the feed shaft 124 is journalled in suitable bearings 135, 136 and carries a feed drive disc 137, which constitutes a crank, having a connecting rod 138 which imparts a reciprocating motion to a rack bar 139 slidably mounted in the machine 20.
  • the rack 141 of rack bar 139 is meshed with a rack gear 142, connected by a short shaft 143 to a sprocket 144.
  • the sprocket 144 through a drive chain 145, drives the compound gear and sprocket 146 located in the housing 147 mounted at the magazine end of the machine 20.
  • the rotation of the drive shaft 34 is converted to a reciprocating sine wave motion of the compound gear and sprocket 146.
  • a swing arm 155 is provided to break the drive so as to position the cross feed carriage 76 in relation to the conveyors 29 and 30. For example, with the crank pin 156, of crank disc 137 at dead bottom centre, the carriage can be moved forward by hand until the nipper jaws are in the desired full forward position. The swing arm 155 is then returned to position to bring the gears 148 and 149 back into mesh and the arm locked by the bolt 157 in the slot 158.
  • the carriage 76 is moved toward and away from the magazine gateway 47 by the chain 77 in accordance with the reciprocating motion imparted thereto by the sprocket 78 which is driven by the coupling hub 153.
  • the carriage is slidable on suitable rods 161 within frame piece 80, the rods 161 being straight so that the reciprocation of the carriage and nippers is rectilinear.
  • sheet magazine means supporting a stack of said sheets with the endmost lift thereof continually urged into position proximate an end feed gateway;
  • mechanical sheet separation and segregation means including splitter means operable at said end feed gateway to automatically split off and segregate the marginal edges, of each successive endmost lift of said sheets to be fed, from the remainder of said stack;
  • rectilinearly reciprocating nippers operable in said gateway to move toward said magazine, clamp onto the segregated marginal edges of each said successive lift of sheets, pull said lift out of said stack and magazine and release said lift.
  • An automatic feeder for lifts of limp, flexible sheets comprising:
  • a sheet magazine mounted in said feeding zone, said magazine having mechanical lift separation and seggregation means, including splitter means for splitting otf and positioning each successive endmost lift with one edge thereof spaced from the next successive lift, and
  • lift extraction means including nippers moving rectilinearly from said magazine over said stretch for grasping the said edge portion of each successive endmost lift, pulling said lift out of said magazine over said stretch and releasing the same to advance with said stretch.
  • said sheet magazine is mounted in said feeding zone alongside said conveyor path and on the same side thereof as said gauge, and
  • said lift extraction means includes a carriage, supporting said nippers, and movable in a path transverse to said conveyor path and extending from said magazine across said path;
  • each successive lift is pulled from said magazine across said conveyor with its leading and trailing edges parallel to said conveyor path and to said side gauge but is advanced by said conveyor with said edges constituting side edges parallel to said side gauge.
  • Apparatus for feeding lifts of identical, limp, flexible sheets individually and successively from a stack of such sheets comprising:
  • a sheet magazine for supporting a stack of said sheets, with said sheets continually urged toward one end thereof;
  • mechanical lift separation and segregation means including splitter means movable to enter said stack at a predetermined distance from said end to split off, and bend the leading edge portions of each successive endmost lift away from the remainder of said stack, said splitter means being normally spring loaded outwardly away from said magazine;
  • lift extraction means movable toward and away from said magazine, said means including gripping mechanism clamping on the opposite faces of the leading edge portions of each such segregated lift to extract said lift from said stack;
  • Apparatus for feeding lifts of identical limp, flexible sheets individually and successively from a stack of such sheets comprising:
  • a sheet magazine for supporting a stack of said sheets, with said sheets continually urged toward one end thereof;
  • mechanical lift separation and segregation means including splitter means movable to enter said stack at a predetermined distance from said end to split 01f, and bend the leading edge portions of each successive endmost lift away from, the remainder of said stack;
  • lift extraction means including a carriage reciprocating rectilinearly between said one end of said magazine and a position remote from said stack, said carriage having gripping mechanism in the form of a pair of nippers, mounted on the side thereof facing said stack, said nippers closing to clamp on the opposite faces of the leading edge portions of each successive endmost lift so segregated, said carriage withdrawing said nipper clamped lift in a path parallel to the plane of the sheets in said stack to extract said lift from said stack and said nippers opening to release said clamped lift at said remote position, and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US379613A 1964-07-01 1964-07-01 Apparatus and method for feeding lifts of limp sheets Expired - Lifetime US3327873A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US379613A US3327873A (en) 1964-07-01 1964-07-01 Apparatus and method for feeding lifts of limp sheets
GB27652/65A GB1110257A (en) 1964-07-01 1965-06-30 Feeding apparatus for groups of limp sheets
DEM65754A DE1302083B (de) 1964-07-01 1965-06-30 Vorrichtung zum UEberfuehren von Blattsaetzen von einem Blattstapel an eine Foerdereinrichtung

Applications Claiming Priority (1)

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US379613A US3327873A (en) 1964-07-01 1964-07-01 Apparatus and method for feeding lifts of limp sheets

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576261A (en) * 1969-03-20 1971-04-27 Southworth Machine Co Automatic feed for lifts of limp paper
US3966059A (en) * 1974-10-03 1976-06-29 Eizo Sase Paper feeding apparatus for an automatic plane type paper punching machine
US4313703A (en) * 1978-11-17 1982-02-02 Womako Maschinenkonstruktionen Gmbh Apparatus for breaking up stacks of paper sheets or the like
US4396336A (en) * 1981-01-26 1983-08-02 Herman Malamood Apparatus for feeding lifts of limp sheets
DE3717267A1 (de) * 1987-05-22 1988-12-01 Renz Peter Vorrichtung zum abtrennen und entfernen einer lage boegen vom unteren ende eines stapels
US5082268A (en) * 1988-08-22 1992-01-21 J.A.D. Enterprises Of New York, Inc. Credit card dispensing and positioning apparatus
EP1170230A2 (de) * 2000-05-18 2002-01-09 James Burn International Limited Vorrichtung zum Stanzen
US20050081694A1 (en) * 2002-04-22 2005-04-21 General Binding Corporation Automated punch machine for perforating stacks of sheets
CN110255200A (zh) * 2019-06-28 2019-09-20 中集新型环保材料股份有限公司 坯板输送堆叠设备及坯板输送堆叠的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE451066B (sv) * 1980-11-10 1987-08-31 Stobb Inc System for tillforsel av ark till en arkupptagningsanordning
DE3629491A1 (de) * 1986-08-29 1988-03-03 Schneider Gmbh & Co Verfahren und vorrichtung zum vereinzeln von papierbloecken aus einem stapel

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US90482A (en) * 1869-05-25 Improvement in feed-tables for printing-presses
US348021A (en) * 1886-08-24 Printing-press
US685535A (en) * 1899-09-08 1901-10-29 Joseph E Smyth Signature-gatherer.
US1209110A (en) * 1914-10-10 1916-12-19 Frederick C Caswell Paper-feeding machine.
GB219032A (en) * 1923-01-11 1924-07-11 William Whitehead Improvements in means for storing bottle and other labels
US2128316A (en) * 1937-05-07 1938-08-30 George F Paul Apparatus for piling sheets and plates
US2273689A (en) * 1940-03-16 1942-02-17 Eugene F Boron Sheet stacker
US3155244A (en) * 1962-09-19 1964-11-03 Standard Oil Co Sheet feeding and manipulating device and misfeed detector means therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE274164C (de) *
US1013156A (en) * 1911-07-17 1912-01-02 August Haas Interlocking-block structure.
DE337567C (de) * 1915-10-13 1921-06-02 Georg Spiess Bogenzusammentragmaschine
DE582334C (de) * 1930-07-20 1933-08-12 Gutberlet & Co A Einrichtung zur Ablage der von einem Stapel mittels Abzuggreifers abgenommenen Einzelbogen, insbesondere fuer Zusammentragmaschinen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US90482A (en) * 1869-05-25 Improvement in feed-tables for printing-presses
US348021A (en) * 1886-08-24 Printing-press
US685535A (en) * 1899-09-08 1901-10-29 Joseph E Smyth Signature-gatherer.
US1209110A (en) * 1914-10-10 1916-12-19 Frederick C Caswell Paper-feeding machine.
GB219032A (en) * 1923-01-11 1924-07-11 William Whitehead Improvements in means for storing bottle and other labels
US2128316A (en) * 1937-05-07 1938-08-30 George F Paul Apparatus for piling sheets and plates
US2273689A (en) * 1940-03-16 1942-02-17 Eugene F Boron Sheet stacker
US3155244A (en) * 1962-09-19 1964-11-03 Standard Oil Co Sheet feeding and manipulating device and misfeed detector means therefor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576261A (en) * 1969-03-20 1971-04-27 Southworth Machine Co Automatic feed for lifts of limp paper
US3966059A (en) * 1974-10-03 1976-06-29 Eizo Sase Paper feeding apparatus for an automatic plane type paper punching machine
US4313703A (en) * 1978-11-17 1982-02-02 Womako Maschinenkonstruktionen Gmbh Apparatus for breaking up stacks of paper sheets or the like
US4396336A (en) * 1981-01-26 1983-08-02 Herman Malamood Apparatus for feeding lifts of limp sheets
DE3717267A1 (de) * 1987-05-22 1988-12-01 Renz Peter Vorrichtung zum abtrennen und entfernen einer lage boegen vom unteren ende eines stapels
US5082268A (en) * 1988-08-22 1992-01-21 J.A.D. Enterprises Of New York, Inc. Credit card dispensing and positioning apparatus
EP1170230A2 (de) * 2000-05-18 2002-01-09 James Burn International Limited Vorrichtung zum Stanzen
EP1170230A3 (de) * 2000-05-18 2002-06-12 James Burn International Limited Vorrichtung zum Stanzen
US20050081694A1 (en) * 2002-04-22 2005-04-21 General Binding Corporation Automated punch machine for perforating stacks of sheets
CN110255200A (zh) * 2019-06-28 2019-09-20 中集新型环保材料股份有限公司 坯板输送堆叠设备及坯板输送堆叠的方法
CN110255200B (zh) * 2019-06-28 2024-05-28 徐州中集新材科技发展有限公司 坯板输送堆叠设备及坯板输送堆叠的方法

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GB1110257A (en) 1968-04-18
DE1302083B (de) 1969-12-18

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