US3923297A - Apparatus for feeding sheets - Google Patents

Apparatus for feeding sheets Download PDF

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Publication number
US3923297A
US3923297A US471910A US47191074A US3923297A US 3923297 A US3923297 A US 3923297A US 471910 A US471910 A US 471910A US 47191074 A US47191074 A US 47191074A US 3923297 A US3923297 A US 3923297A
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US
United States
Prior art keywords
casing
bars
sheets
pusher
front portion
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
US471910A
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English (en)
Inventor
Jean-Jacques Barny
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.)
MARTIN
Original Assignee
MARTIN
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 MARTIN filed Critical MARTIN
Application granted granted Critical
Publication of US3923297A publication Critical patent/US3923297A/en
Anticipated expiration legal-status Critical
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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
    • B65H3/24—Separating articles from piles by pushers engaging the edges of the 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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • 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 present invention refers to a device for the cyclic introduction of products in the form of plates into a machine for treatment and is applied more particularly by way of example to a machine for cutting and printing sheets of corrugated cardboard for the production of packing cases.
  • a machine of this kind known as a slotter or slotter printer comprises printing cylinders and rotary knives for rotary cutting in synchronism; the portion of the slotter known as the feeder comprises in general a pusher with claws having an alternating motion in phase with the cylinders and rotary knives in order to introduce one by one the sheets stacked in a magazine.
  • the supporting table is furnished with front stops which leave, above the table, a free space of a height very slightly greater than the thickness of one sheet and prevent the passage of the next sheet above which might be driven forward by friction.
  • the present invention corrects these disadvantages by a device enabling profiting both by the advantages of the mechanical pusher having positive action without the possibility of slipping, and by the advantages of pneumatic suction restoring good flatness to the deformed sheets.
  • a device for the cyclic introduction of products in the form of sheets into a treatment machine comprising a supporting table furnished with front and rear stops between which a stack of sheets may be located which are to be introduced one by one into the machine, a pusher with claws, means to actuate the pusher with a reciprocating motion operable on each driving stroke to drive the bottom sheet of the stack out of the stack, the supporting table comprising a casing closed at the sides and the bottom, means to couple the casing to a suction device, and spaced parallel bars extending in the direction of drive of the sheets forming the top of the table, and the pusher comprising a support bar arranged inside the casing below the bars, the claws being secured thereto, being of the same width as the space between the bars and projecting above the bars and a rear closure plate of the same transverse section as the casing constituting a displaceable rear wall in respect of the zone communicating in operation with the suction device.
  • the casing comprises two portions, a front portion closed at the front and sides and open towards the rear and having supporting bars fixed at the front and free at the rear, and a telescopic rear portion able to slide in the front portion and blocking the open rear of the front portion, having bars comprising a lower element movable underneath a corresponding bar of the front portion and bearing on a strut bracket resting on the bottom of the rear portion, and an upper element movable over the corresponding bar of the front portion, the pusher being displaceable within the rear portion and underneath the lower elements of the bars of the rear portion.
  • FIG. l is a simplified perspective with some elements cut away, of an embodiment of the feed table for a slotter of small size equipped in accordance with the invention.
  • FIG. 2 is a transverse section of the table along II--II in FIG. 3.
  • FIG. 3 is a longitudinal section along IIIIII in FIG. 2.
  • FIGS. 4 and 5 respectively represent, compared with FIG. 3, two conditions of a telescopic slotter for large size products.
  • the frame 1 of the feeder has two plates 2 and 3 enclosing the usual mechanisms onto which the feed bar 4 is fixed which they actuate with an alternating to-and-fro motion.
  • the feed table is in the form of a casing arranged between the plates 2 and 3 closed at the front by a sill S, at the rear by a crosspiece 6 and in the lower part by a plate '7.
  • the upper portion of the casing comprises parallel and regularly spaced bars connecting the sill 5 to the rear crosspiece 6.
  • Sheets of cardboard 11 are laid on the table, stacked between front stops l2 and rear stops 13. For simplification of FIG. 1 these rear stops 13 have not been shown there but they are seen fixed to the bars 9 in the left-hand portion of FIG. 2 and in FIG. 3.
  • the free space between the front stops l2 and the sill 5 is adjusted to a value very slightly greater than the thickness of a sheet ll ll, and the feeder has in the usual way driving rolls 15 which take charge of the sheet after it has passed under the stops 12.
  • the feed bar 4 is arranged inside the casing below the bars 9..
  • the driving claws 17 are fixed to the bar 4 and their width is equal to the spacing of the bars 7; thus they fill the free space between the bars and project above them.
  • the bar 4 is furnished at the rear with a sealing plate 118 of the same transverse section as the casing.
  • the casing has a neck 20 through which the interior is in communication with an apparatus for putting it under vacuum such, for example, as a fan; this has not been shown in the drawings as it can be of any ordinary known type.
  • the device which has just been described from FIGS. 1 to 3 presents certain disadvantages if the slotter is of large size, that is to say, if the maximum longitudinal dimension of the sheets is large. In this case the casing is of great length and the bars 9 would have to be reinforced in order not to bend under the load from the sheets increased by the effect of vacuum. In addition and above all, if one has to work with sheets of small longitudinal dimension it becomes difficult for the operator to reach the magazine for the sheets because the crosspiece 6 forms an obstacle and prevents access to the central portion of the table.
  • FIGS. 4 and 5 there will preferably be used a telescopic variant upon the table casing, as shown in FIGS. 4 and 5.
  • the casing 7 open towards the rear and the bars 9 are free towards the rear.
  • the rear casing has in alignment with the bars 9 bars of two elements.
  • the lower element 28 bears towards the front on brackets 29 forming a strut against the bottom 26.
  • the free rear ends of the bars 9 rest on this lower element 28.
  • the upper element 30 bears by its front portion on the corresponding bar 9.
  • the alternating motion of the feed bar 4 and the pushers 17 occurs entirely within the telescopic rear casing.
  • the bars 9 slide between the elements 28 and 30 and access to the pack of sheets 11 from the rear remains always just as easy whatever the size of the sheets.
  • the bars 28-30 can consist of a flattened tube or of the association between a flat and a U-iron, for example.
  • a device for successively feeding the bottom sheet from a stack of sheets into a treatment machine comprising a supporting table, front and rear stops on said table between which the stack is located, a casing closed at the sides and the bottom, means for coupling said casing to a suction device, spaced parallel bars extending in the direction of feed of the sheets and forming the top of the table, a-reciprocating feeder, a transverse support bar for said feeder inside said casing and below the top bars of said casing, claws of the same width as the space between said top bars secured to said support bar and projecting upwards between and above said top bars to engage the bottom sheet at each reciprocation of said feeder, and a rear closure plate of the same transverse section as said casing, projecting under the support bar and forming a movable rear wall for said casing moving with said support bar.
  • the casing comprises a front portion closed at the front and sides and open towards the rear and having supporting bars fixed at the front and free at the rear, and a telescopic rear portion able to slide in the front portion and blocking the open rear of the front portion, having bars comprising a lower element movable underneath a corresponding bar of the front portion and bearing on a strut bracket resting on the bottom of the rear portion, and an upper element movable over the corresponding bar of the front portion, the pusher being displaceable within the rear portion and underneath the lower elements of the bars of the rear portion.
  • a device including removable shutters to fill the space between two adjacent bars after dismounting the claw movable therebetween, to

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Making Paper Articles (AREA)
  • De-Stacking Of Articles (AREA)
US471910A 1973-07-31 1974-05-21 Apparatus for feeding sheets Expired - Lifetime US3923297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7327945A FR2239881A5 (de) 1973-07-31 1973-07-31

Publications (1)

Publication Number Publication Date
US3923297A true US3923297A (en) 1975-12-02

Family

ID=9123379

Family Applications (1)

Application Number Title Priority Date Filing Date
US471910A Expired - Lifetime US3923297A (en) 1973-07-31 1974-05-21 Apparatus for feeding sheets

Country Status (7)

Country Link
US (1) US3923297A (de)
BE (1) BE818256A (de)
DE (1) DE2424663C3 (de)
ES (1) ES426683A1 (de)
FR (1) FR2239881A5 (de)
GB (1) GB1470994A (de)
IT (1) IT1014191B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059263A (en) * 1974-09-19 1977-11-22 Henc Edward V Vacuum feed
US4227687A (en) * 1977-04-20 1980-10-14 N.V. Optische Industrie "De Oude Delft" Apparatus for separating and removing a sheet from a stack of such sheets
US20030234483A1 (en) * 2002-05-25 2003-12-25 Rolf Hansmann Device for isolating and feeding the lowest sheet in each case from a stack
US20150028534A1 (en) * 2013-07-29 2015-01-29 Riso Kagaku Corporation Corrugated cardboard sheet feeder
CN109626041A (zh) * 2018-12-03 2019-04-16 苏州经贸职业技术学院 一种纸板送料机构
CN112476626A (zh) * 2020-11-16 2021-03-12 常州纺织服装职业技术学院 包装模切机递纸装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512450A1 (de) * 1985-04-04 1986-10-16 Arland, Otto Czerweny von, Dr., 8023 Pullach Verfahren und einrichtung zur herstellung von rohrfoermigen schubschachtelaussenteilen
JPS62150438U (de) * 1986-03-17 1987-09-24
JPH0790934B2 (ja) * 1990-09-18 1995-10-04 株式会社梅谷製作所 シート送出し装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377063A (en) * 1965-06-18 1968-04-09 Kirby S Engineers Ltd Apparatus for feeding blanks of cardboard or analogous sheet material to machinery for operating on the blanks so fed
US3767186A (en) * 1971-07-23 1973-10-23 S & S Corrugated Paper Mach Sheet feeder having suction assist

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377063A (en) * 1965-06-18 1968-04-09 Kirby S Engineers Ltd Apparatus for feeding blanks of cardboard or analogous sheet material to machinery for operating on the blanks so fed
US3767186A (en) * 1971-07-23 1973-10-23 S & S Corrugated Paper Mach Sheet feeder having suction assist

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059263A (en) * 1974-09-19 1977-11-22 Henc Edward V Vacuum feed
US4227687A (en) * 1977-04-20 1980-10-14 N.V. Optische Industrie "De Oude Delft" Apparatus for separating and removing a sheet from a stack of such sheets
US20030234483A1 (en) * 2002-05-25 2003-12-25 Rolf Hansmann Device for isolating and feeding the lowest sheet in each case from a stack
US7004461B2 (en) * 2002-05-25 2006-02-28 Kolbus Gmbh & Co. Kg Device for isolating and feeding the lowest sheet in each case from a stack
US20150028534A1 (en) * 2013-07-29 2015-01-29 Riso Kagaku Corporation Corrugated cardboard sheet feeder
US9102487B2 (en) * 2013-07-29 2015-08-11 Riso Kagaku Corporation Corrugated cardboard sheet feeder
CN109626041A (zh) * 2018-12-03 2019-04-16 苏州经贸职业技术学院 一种纸板送料机构
CN112476626A (zh) * 2020-11-16 2021-03-12 常州纺织服装职业技术学院 包装模切机递纸装置

Also Published As

Publication number Publication date
GB1470994A (en) 1977-04-21
DE2424663A1 (de) 1975-02-20
DE2424663C3 (de) 1978-07-13
FR2239881A5 (de) 1975-02-28
BE818256A (fr) 1975-01-30
ES426683A1 (es) 1976-07-16
IT1014191B (it) 1977-04-20
DE2424663B2 (de) 1977-11-17

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