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US3788639A - Sheet feeding cylinder - Google Patents

Sheet feeding cylinder Download PDF

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Publication number
US3788639A
US3788639A US00236275A US3788639DA US3788639A US 3788639 A US3788639 A US 3788639A US 00236275 A US00236275 A US 00236275A US 3788639D A US3788639D A US 3788639DA US 3788639 A US3788639 A US 3788639A
Authority
US
United States
Prior art keywords
shaft
cylinder
lever
sheet
sheet feeding
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
US00236275A
Other languages
English (en)
Inventor
M Bru
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.)
JJ Carnaud and Forges de Basse Indre SA
Original Assignee
JJ Carnaud and Forges de Basse Indre SA
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 JJ Carnaud and Forges de Basse Indre SA filed Critical JJ Carnaud and Forges de Basse Indre SA
Application granted granted Critical
Publication of US3788639A publication Critical patent/US3788639A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/38—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for embossing, e.g. for making matrices for stereotypes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers

Definitions

  • a longitudinal cavity extends into the cylinder from the periphery parallel to the axis thereof.
  • a shaft is located in the cavity and mounted for rocking movement about its axis by control means located beyond one end of the cylinder.
  • a stop and a gripper operable by the rocking of the shaft and arranged to cooperate with the leading edge of a sheet for feeding it.
  • the stop and the gripper are secured to an auxiliary shaft parallel to the first shaft and mounted for rocking movement in said cavity in which it is wholly contained, the two shafts being connected to each other for rocking movement by a transmission linkage comprising a first lever secured to the first shaft and a second lever shorter than the first secured to the auxiliary shaft and a connecting rod pivotally connected to the levers.
  • This invention relates to a cylinder for feeding sheets, for example sheets of tinplate, to a machine for treating at least one of the faces of the sheets, for example by printing, varnishing, or coating.
  • This positioning is usually effected in two directions at right angles to one another, that is to say in a direction parallel to the axis of the cylinder and in a direction parallel to the direction of advance of the sheet.
  • the sheet is positioned by lateral guides disposed parallel to its direction of advance and by stops carried on the periphery of the sheet feeding cylinder.
  • the sheet to be treated is introduced into the machine at a linear speed which is higher than the horizontal component of the speed of the stops.
  • a shock therefore occurs when the leading edge of the sheet comes into contact with the stops, and this shock may cause longitudinal rebounding and/or vibration of the sheet.
  • Sheet feeding cylinders known up to the present time generally have, mounted in a longitudinal cavity parallel to their axis, a rocking shaft operated by external control means, and it is this shaft which carries at least one stop intended to co-operate with the leading edge of the sheet to be treated.
  • the rocking shaft also carries at least one gripper associated with the stop and intended for momentarily covering the leading edge of the sheet at the end of the positioning, in order to prevent it from passing over the stop.
  • the stops are mounted pivotally so that, before making contact with a sheet, they project considerably beyond the periphery of the sheet feeding cylinder and can thus be interposed in the path of the sheet.
  • stops are keyed on a shaft rockably mounted in the sheet feeding cylinder, this shaft thus being adapted to move the stops pivotally under the action of control means which are generally composed of a cam co-operating with a roller carried at the end of a lever keyed on'the shaft.
  • control means are necessarily outside the sheet feeding cylinder, so that the rocking shaft which carries the stops must necessarily project longitudinally beyond the cylinder.
  • a sheet feeding cylinder comprises a longitudinal cavity which extends into the cylinder from the periphery thereof and which is parallel to the axis of the cylinder, a shaft located in the cavity and mounted for rocking movement about its axis by control means located beyond an end of the cylinder, and at least one stop and at least one gripper operable by rocking of said shaft and arranged to cooperate with the leading edge of a sheet to effect feeding thereof, wherein the stop and gripper are secured to an auxiliary shaft parallel to said first-mentioned shaft and mounted for rocking movement in said cavity and wherein the two shafts are connected to one another for rocking movement thereof by a transmission linkage.
  • the transmission linkage may comprise a first lever secured to said first-mentioned shaft, a second lever secured to the auxiliary shaft, and a connecting rod articulated to the levers.
  • a sheet feeding cylinder In a sheet feeding cylinder according to the invention it is the auxiliary shaft which effects the pivoting of the stop or stops of the sheet feeding cylinder.
  • auxiliary shaft Since the auxiliary shaft is rocked by the firstmentioned shaft, it may be completely contained longitudinally in the cavity in the feed cylinder, because it does not need rocking drive means outside the latter.
  • the auxiliary shaft can, therefore, be disposed closer to the periphery of the cylinder than the firstmentioned shaft and considerably forward of the latter considered in the direction of rotation of the sheet feeding cylinder.
  • the lever arm effecting the rocking movement of the stops carried by the auxiliary shaft can be of considerable length in relation to the lever arm as compared with a similar lever arm provided to effect rocking of the stops in known sheet feeding cylinders.
  • the angular path of a sheet feeding cylinder according to the invention during positioning of a sheet may be up to 45.
  • FIG. 1 is a plan view of a sheet feeding cylinder according to the invention
  • FIGS. 2, 3 and 4 are partial cross-sectional views to an enlarged scale, taken respectively on the lines II-II, IlI-III and IV--IV, FIG. 1;
  • FIG. 5 is a diagrammatic view illustrating the position of the feed cylinder at the moment when a sheet comes into contact with stops carried by the cylinder;
  • FIG. 6 is a similar view to FIG. 5 and illustrates the position of the feed cylinder during the gripping of a sheet by grippers associated with the stops carried by the cylinder.
  • the sheet feeding cylinder 10 is mounted for rotation between two side plates 11A, 113, FIG. 1, and at each of its ends is provided with pinions 12A, 128 by which it is rotated by gear wheels not shown.
  • the sheet feeding cylinder 10 is provided with a cavity 13 which extends longitudinally of the cylinder and completely over a sector of the periphery of the cylinder.
  • a shaft 14, hereinafter referred to as the main shaft, is located in the cavity 13 and is mounted for rotation in bearings 15 secured to the cylinder.
  • the shaft 14 extends beyond an end of the cylinder 10 and carries a lever 16 provided at its end with a roller 17 arranged to co-operate with a cam 18 secured to the frame 11B.
  • the profile of the cam 18 is so designed as to effect rocking of the shaft 14 about its axis during the rotation of the cylinder 10.
  • the main shaft 14 has associated therewith an auxiliary shaft 20 which extends parallel to the main shaft 14 in the cavity 13 but which, being shorter than the main shaft, is entirely contained in the cavity 13.
  • the auxiliary shaft 20 is mounted for rotation in bearings 21 secured to the cylinder 10, and is disposed nearer the periphery of the cylinder than is the main shaft 14.
  • the auxiliary shaft 20 is situated down-stream of the main shaft 14, considered in the direction of rotation of the cylinder 10, which direction is indicated by arrow 22 in FIG. 5.
  • the auxiliary shaft 20 is driven by the main shaft 14 by means of a transmission linkage 23, which in the example illustrated, and can be seen more clearly in FIG. 4, comprises a first lever 24 rockable on the main shaft 14, a second lever 25 rockable on the auxiliary shaft 20, and a connecting rod 26 articulated at 27 to the first lever 24 and at 28 to the second lever 25.
  • a transmission linkage 23 which in the example illustrated, and can be seen more clearly in FIG. 4, comprises a first lever 24 rockable on the main shaft 14, a second lever 25 rockable on the auxiliary shaft 20, and a connecting rod 26 articulated at 27 to the first lever 24 and at 28 to the second lever 25.
  • the second lever 25 preferably has a length L2, FIG. 4, shorter than the length Ll of the first lever 24.
  • Two identical stops 30 are spaced apart axially along and are secured to the auxiliary shaft 20.
  • One of the stops 30 is illustrated in FIG. 3 and comprises a stop lever 31 fastened on the auxiliary shaft 20 and a stop heel 32, the position of which is preferably adjustable on the lever 31 and which in the position of rest, as illustrated in FIG. 3, projects slightly beyond the periphery of the cylinder 10 in the proximity of the rear edge 33 of the cavity 13.
  • the position of rest is defined by an auxiliary stop 34.
  • a gripper comprises a gripper lever 36 secured to the auxiliary shaft 20, and a gripper member 37 which, in the position of rest as illustrated, is engaged over a support plate 38 attached to the cylinder 10 level with the periphery of the cylinder.
  • the gripper member 37 is pivotally mounted on the gripper lever 36 by means of a pivot 50 and is constantly biased towards the cylinder 10 and the support plate 38 by a spring 51 reacting against the gripper lever 36 and the gripper member 37. Pivoting of the gripper member 37 towards the cylinder 10 is limited by a stop portion 52 positioned in a notch 53 in the gripper lever 36 for limited movement.
  • the sheet feeding cylinder 10 is usually associated with an applicator cylinder 40, which is illustrated only partially and diagrammatically in broken lines in FIGS. 5 and 6.
  • the axes of the cylinders 10 and 40 are parallel and at a distance slightly greater than the sum of the radii of the cylinders.
  • a sheet 41 to be treated is pushed by a push-rod 42 in a feed plane 43, FIG. 5, for the purpose of introduction between the cylinders 10 and 40.
  • the sheet 41 During movement of the sheet 41 by the push-rod 42 the sheet is guided transversely, that is to say perpendicularly to the axis of the cylinders 10 and 40, by lateral guides, not shown.
  • the profile of the cam 18 is such that for a first position illustrated in FIG. 5, the stops 30 of the cylinder 10 project considerably beyond the cavity 13 of the cylinder and are thus interposed in the path of the sheet 41, at a distance from the plane P containing the axis of the cylinders, as diagrammatically illustrated in FIG. 5.
  • the thus increased projection of the stops 30 is due to the relatively great length of the stop levers 31, which is made possible by the fact that the auxiliary shaft 20 is closer to the periphery of the cylinder 10, and is disposed downstream of the main shaft 14.
  • the increased projection of the stops 30 is further due to the step-down ratio introduced between the rocking movements of the shafts l4 and 20 due to the fact that in the transmission linkage connecting the shafts the lever 25 secured to the auxiliary shaft 20 is shorter than the lever 24 secured to the main shaft 14.
  • the push-rods 42 maintain their action and continue to urge the sheet 41 towards the stops 30, so that any rebounding and/or vibration of the sheet is definitely damped before the effective operation of the applicator cylinder 40, provided that the positioning time between the first contact of the sheet 41 with the stops 30 and the commencement of the effective work is sufficient.
  • the end of the positioning time is determined by the gripping of the leading edge portion of the sheet 41 by the grippers 35 associated with the stops 30.
  • This gripping is effected in the position P2 illustrated in FIG. 6, slightly beyond the plane P containing the axes of the cylinders and 40.
  • a sheet feeding cylinder according to claim 1, wherein the transmission linkage comprises a first lever secured to said first-mentioned shaft, a second lever secured to the auxiliary shaft, and a connecting rod pivotally connected to the levers.
  • a sheet feeding cylinder according to claim 2 wherein the length of the second lever is less than that of the first lever.
  • a shaft disposed within said cavity, means mounting said shaft for rotation and drive means disposed beyond said cylinder connected to said shaft for effecting rotation of said shaft, at least one stop lever fixedly carried by said shaft for rotation therewith and for cooperating in abutting relation with a leading edge of a sheet delivered to said cylinder, an auxiliary stop carried by said cylinder within said cavity for engagement by said stop lever to limit rotation of said shaft and said stop lever, at least one gripper lever carried by said shaft for rotation therewith, a gripper, means pivotally mounting said gripper on said gripper lever, and spring means biasing said gripper towards said cylinder for gripping an edge of a sheet against said cylinder.
  • a sheet feeding cylinder in accordance with claim 5 together with a second shaft disposed in said cavity and connected to said drive means, and transmission linkage between the first-mentioned shaft and said second shaft for driving said first-mentioned shaft by said drive means.
  • a sheet feeding cylinder according to claim 6, wherein the transmission linkage comprises a first lever secured to said second shaft, a second lever secured to said first-mentioned shaft, and a connecting rod pivotally connected to said levers.
  • a sheet feeding cylinder according to claim 8 wherein the length of the second lever is less than that of the first lever.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US00236275A 1971-03-29 1972-03-20 Sheet feeding cylinder Expired - Lifetime US3788639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7110876A FR2130961A5 (xx) 1971-03-29 1971-03-29

Publications (1)

Publication Number Publication Date
US3788639A true US3788639A (en) 1974-01-29

Family

ID=9074256

Family Applications (1)

Application Number Title Priority Date Filing Date
US00236275A Expired - Lifetime US3788639A (en) 1971-03-29 1972-03-20 Sheet feeding cylinder

Country Status (8)

Country Link
US (1) US3788639A (xx)
JP (1) JPS5215002B1 (xx)
DE (1) DE2213316C3 (xx)
ES (1) ES401341A1 (xx)
FR (1) FR2130961A5 (xx)
GB (1) GB1305167A (xx)
IT (1) IT953968B (xx)
NL (1) NL147383B (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992993A (en) * 1975-03-25 1976-11-23 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Sheet transfer system for a printing machine
US4018161A (en) * 1975-03-25 1977-04-19 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Printing machine with sheet-transfer arrangement
US4224873A (en) * 1977-06-03 1980-09-30 Koenig & Bauer Aktiengesellschaft Clamping gripper
US4253396A (en) * 1978-05-20 1981-03-03 Koenig & Bauer Aktiengesellschaft Sheet gripper
US4311093A (en) * 1979-08-06 1982-01-19 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Sheet feeding assembly including provision for coordinated action of pre-gripper and front stop
US20090152808A1 (en) * 2007-12-18 2009-06-18 Rainer Wieland Drive cylinder with movable grab

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2613174C3 (de) * 1976-03-27 1981-03-19 Koenig & Bauer AG, 8700 Würzburg Vorrichtung zur Steuerung von Greifern in Bogenrotationsdruckmaschinen
DE3311196A1 (de) * 1983-03-26 1984-10-04 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren zur fliessenden anlage von boegen
DE3504435A1 (de) * 1985-02-09 1986-08-14 Miller-Johannisberg Druckmaschinen Gmbh, 6200 Wiesbaden Bogen-druckmaschine mit bogenanlage an einem druckmaschinen-zylinder
DE102012211783A1 (de) * 2012-07-06 2014-01-09 Kba-Metalprint Gmbh Fördervorrichtung und ein Verfahren zum Fördern von Bedruckstoffbogen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1340722A (en) * 1917-12-15 1920-05-18 Cottrell C B & Sons Co Sheet-registering device
US2699941A (en) * 1949-12-15 1955-01-18 Huck Company Registering and gripper means for sheet-fed printing presses
US2892630A (en) * 1954-11-03 1959-06-30 Koenig & Bauer Schnellpressfab Sheet-feeding device for printing machines with continuously rotating impression cylinder
US3497208A (en) * 1967-03-04 1970-02-24 Maschf Augsburg Nuernberg Ag Gripper actuator and control for sheetfed rotary printing presses
US3536321A (en) * 1968-06-13 1970-10-27 Planeta Veb Druckmasch Werke Device for clamping sheet material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1340722A (en) * 1917-12-15 1920-05-18 Cottrell C B & Sons Co Sheet-registering device
US2699941A (en) * 1949-12-15 1955-01-18 Huck Company Registering and gripper means for sheet-fed printing presses
US2892630A (en) * 1954-11-03 1959-06-30 Koenig & Bauer Schnellpressfab Sheet-feeding device for printing machines with continuously rotating impression cylinder
US3497208A (en) * 1967-03-04 1970-02-24 Maschf Augsburg Nuernberg Ag Gripper actuator and control for sheetfed rotary printing presses
US3536321A (en) * 1968-06-13 1970-10-27 Planeta Veb Druckmasch Werke Device for clamping sheet material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992993A (en) * 1975-03-25 1976-11-23 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Sheet transfer system for a printing machine
US4018161A (en) * 1975-03-25 1977-04-19 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Printing machine with sheet-transfer arrangement
US4224873A (en) * 1977-06-03 1980-09-30 Koenig & Bauer Aktiengesellschaft Clamping gripper
US4253396A (en) * 1978-05-20 1981-03-03 Koenig & Bauer Aktiengesellschaft Sheet gripper
US4311093A (en) * 1979-08-06 1982-01-19 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Sheet feeding assembly including provision for coordinated action of pre-gripper and front stop
US20090152808A1 (en) * 2007-12-18 2009-06-18 Rainer Wieland Drive cylinder with movable grab

Also Published As

Publication number Publication date
NL7204279A (xx) 1972-10-03
DE2213316C3 (de) 1976-01-02
GB1305167A (xx) 1973-01-31
NL147383B (nl) 1975-10-15
JPS5215002B1 (xx) 1977-04-26
ES401341A1 (es) 1975-02-16
IT953968B (it) 1973-08-10
FR2130961A5 (xx) 1972-11-10
DE2213316B2 (de) 1974-09-26
DE2213316A1 (de) 1972-10-12

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