US3916743A - Apparatus and process for slitting at least two webs - Google Patents

Apparatus and process for slitting at least two webs Download PDF

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Publication number
US3916743A
US3916743A US418141A US41814173A US3916743A US 3916743 A US3916743 A US 3916743A US 418141 A US418141 A US 418141A US 41814173 A US41814173 A US 41814173A US 3916743 A US3916743 A US 3916743A
Authority
US
United States
Prior art keywords
knife
support
webs
knives
displaceable
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
US418141A
Other languages
English (en)
Inventor
Peter Naudascher
Norbert Martini
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.)
Jagenberg Werke AG
Original Assignee
Jagenberg Werke AG
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 Jagenberg Werke AG filed Critical Jagenberg Werke AG
Application granted granted Critical
Publication of US3916743A publication Critical patent/US3916743A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2033—Including means to form or hold pile of product pieces
    • Y10T83/2037—In stacked or packed relation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6587—Including plural, laterally spaced tools
    • Y10T83/6588—Tools mounted on common tool support
    • Y10T83/659—Tools axially shiftable on support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/783—Tool pair comprises contacting overlapped discs
    • Y10T83/7834—With means to effect axial pressure on pair
    • Y10T83/7838—With means to change axial pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/808—Two tool pairs, driver for one pair moves relative to driver for other pair

Definitions

  • ABSTRACT An apparatus for simultaneously slitting at least two continuously running webs such as paper comprising a plurality of pairs of circular knives, a support, one knife of each pair being in a fixed plane, the second knife of each pair being disposed on said support which is axially displaceable to move said second knives simultaneously toward or away from their respective first knives, roll means for guiding at least one of said webs to each of said knife pairs, and means for joining said slit webs with their edges in longitudinal alignment.
  • One knife on the support is fixed in axial position and another knife is axially displaceable along the support, means being provided to adjust its position and to lock it in predetermined position.
  • the invention relates to a method of simultaneously slitting at least two webs of paper, cardboard or the like, the webs being slit by means of pairs of circular knives, and it furthermore relates to an apparatus for the practice of the method.
  • slitting apparatus In dividing a broad web of material moving at great velocity into a plurality of narrow webs, slitting apparatus are preferably used which consist of two rotating circular knives which cooperate in the manner of a shears.
  • Such slitting devices have proven valuable in the processing of single-layer webs of paper, cardboard or the like because the requirements, such as burr-free and dust-free cut edges, can be fulfilled within the permissible tolerances.
  • the cutting results i.e., the quality of the cut edges of multilayer cut material webs, are perceptibly inferior to that of single-ply cut material webs.
  • the web material In making web material into cut sheets, the web material is-cross-cut by means of revolving knife rolls after it has been slit.
  • the above-mentioned disadvantage of -the'loss of quality in multi-layer slitting is particularly pronounced, since it is also inferior to the quality of the cross cutting.
  • the invention is addressed to the problem of eliminating this deficiency, i.e., of improving the prior-art procedure such that, in the processing of a multi-layer web 'of material, especially the quality of the slitting cut will be comparable to that of asingle-ply web of material.
  • the procedure is to divide the number of webs of material into two separately superimposed strands and slit each strand longitudinally with one or more pairs of circular knives, such that the cut edges of the superimposed webs of material which are produced in each case are located in a common plane forming a right angle with the two web planes.
  • an apparatus is used in which one circular knife of each of the two superimposed circular knife pairs is disposed on a common support which can travel in the axial direction.
  • the further development of the apparatus consists in mounting one of the circular knives disposed on the common support such that it will be adjustable within the bearing bore by means of a coaxial adjusting screw axially against an adjusting gauge, the adjusting gauge consisting of a spring-biased 2-armed lever of unequal arms which has a stop piece extending within reach of both of the cutting edges of the circular knives disposed on the support.
  • the advantage attained with the invention consists in the fact that it has become possible with the abovenamed apparatus to slit a multiple-layer web of material such that the cut-edge quality thus produced is comparable with the quality of a single-ply slit web edge.
  • An additional advantage also consists in the fact that now twice the number of material webs may be cut with the same cut-edge quality.
  • FIG. 1 is a side elevational view of the slitting apparatus
  • FIG. 2 is a partial cross section through the knife mount
  • FIG. 3 is a top plan view of the adjusting gauge.
  • the paper working machine shown in FIG. 1 is a cross-cutting machine 1 preceded by a slitting machine 2.
  • this slitting machine 2 the paper webs 3 and 4 arriving over guide rolls 5 and 6, respectively, from paper roll feeds which are not shown, are introduced separately and slit longitudinally by slitting knife pairs 7 and 8, respectively, associated with webs 3 and 4.
  • the severed webs 3 and 4 are carried over additional guide rolls 9 and 10, respectively, through an infeed roll pair 11 in the cross cutting machine 1, and are combined into a multiple-layer material web 12, and after their further common advancement by means of the drive roll pair 13 they are delivered to the cross-cut knife pair 14.
  • a support 17 adapted for movement in the direction of the slitting knife axis.
  • This support 17 is carried on a cylindrical rail 18 and on a crossbeam 20 provided with a flat bearing surface 19.
  • the axial displacement of the support 17 is performed by means ofa rack 21 which is disposed on the cylindrical rail 18 and is engaged by a pinion 22 which is mounted in the support 17 and maybe turned by means of the handwheel 23.
  • the support 17 may be locked in a particular position by the clamp means 24.
  • This drive starts out from a driven square shaft 31 on which a gear 32 is displaceably mounted.
  • This gear 32 which is mounted in the support 17 and is driven by the square shaft 31, drives the upper circular knife 15 directly by engaging the gear 33 disposed upon the knife shaft.
  • a driving connection is also provided through an intermediate gear 34 to the gear 35 which is mounted on the lower shaft of circular knife 16 and thus circular knife 16 is driven.
  • the circular knives l5 and 16 mounted in the support 17 are so disposed that their cutting edges 36 and 37 lie in a single plane. For reasons of manufacturing accuracy and the possibility of regrinding the panshaped circular knives l5 and 16, however, it is impossible to achieve a precise alignment of the two cutting edges 36 and 37.
  • the circular knife 15 is arranged so as to be axially adjustable. The adjustment is performed through the adjusting screw 38 which is guided in the threaded ring 39 mounted on the support 17.
  • the plate springs 47 in the area of the shaft shoulder 46 have two functions: on the one hand they are to produce a return of circular knife 15 when the adjusting screw 38 is loosened, and on the other hand they are to compensate any axial play occurring in the mounting of the knife.
  • a spring-loaded stop lever 48 with a stop piece 49 is provided on support 17 and can be pivoted by hand against the spring pressure into the plane of the cutting edges of circular knives 15 and 16. Since the stop piece, on account of its elongated shape and because of the central arrangement of the adjusting gauge 48-49 between the two circular knives 15 and 16, extends into both cutting edge areas, when the one end of the stop piece 49 has come into contact with the cutting edge 37 of circular knife 16, it projects the plane of the said cutting edge to the cutting edge of circular knife 15.
  • the cutting edge 36 of the upper circular knife 15 may thus be adjusted to the thus projected cutting edge plane of the lower circular knife 16, the adjustment being completed at the moment when cutting edge 36 contacts the other end of the stop piece 49.
  • the stop lever 48 is released and the nut 50 threaded on the adjusting screw 38 is tightened against the fixed threaded ring 39.
  • the support 17 may then be brought by means of hand wheel 23 into any desired position and locked there by the 'clamp means 24.
  • the oppositely located circular knives 25, 26 are engaged with the cutting edges 36 and 37 of circular knives 15 and 16, respectively, and are then locked on the slitting knife crossbeams 29 and 30, respectively.
  • An apparatus for simultaneously slitting at least two initially separated continuously running webs such as paper comprising a plurality of pairs of circular knives, a support, one knife of each pair being in a fixed plane, the second knife of each pair being disposed on said support which is displaceable transverse to the running webs to move said second knives simultaneously toward or away from their respective first knives, roll means for guiding at least one of said webs to each of said knife pairs, and means for joining said slit webs superimposed across their broad faces with their edges in longitudinal alignment, one second knife on said support being fixed in position relative to said support and one second knife on said support being displaceable along the axis about which the second knife rotates in a direction transverse to the direction of travel .of the running webs so that its plane of rotation may be adjusted to coincide with that of said fixed second knife, the slit edges produced by said two second knives being longitudinally aligned.
  • An apparatus including an adjusting screw for displacing the displaceable second knife on said support, an adjusting gage for sensing when the planes of rotation of said second knives coincide, and means for locking said adjusting screw in position to lock said displaceable second knife in position.
  • said adjustingv gage comprises a spring-biased, unequalarmed double lever having on its longer lever arm a stop arm extending simultaneously within the reach of the cutting edges of the fixed second knife and the displaceable second knife.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Replacement Of Web Rolls (AREA)
  • Details Of Cutting Devices (AREA)
  • Making Paper Articles (AREA)
US418141A 1973-09-24 1973-11-21 Apparatus and process for slitting at least two webs Expired - Lifetime US3916743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2347889A DE2347889C2 (de) 1973-09-24 1973-09-24 Verfahren zum gleichzeitigen Längsschneiden von wenigstens zwei Materialbahnen aus Papier, Karton od.dgl.

Publications (1)

Publication Number Publication Date
US3916743A true US3916743A (en) 1975-11-04

Family

ID=5893421

Family Applications (1)

Application Number Title Priority Date Filing Date
US418141A Expired - Lifetime US3916743A (en) 1973-09-24 1973-11-21 Apparatus and process for slitting at least two webs

Country Status (11)

Country Link
US (1) US3916743A (sv)
JP (1) JPS5426035B2 (sv)
AT (1) AT332213B (sv)
CH (1) CH573800A5 (sv)
DE (1) DE2347889C2 (sv)
ES (1) ES430322A1 (sv)
FR (1) FR2244604B1 (sv)
GB (1) GB1428906A (sv)
IT (1) IT1020832B (sv)
NL (1) NL7411960A (sv)
SE (1) SE414724B (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704930A (en) * 1984-05-03 1987-11-10 Jagenberg Ag Method and apparatus for removing edge strips from material webs of paper, cardboard or the like
US5309803A (en) * 1990-05-03 1994-05-10 Penniman David T System including method and apparatus for cutting each layer of a double-layered roll of sheet to different lengths and widths

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876106B1 (en) 1996-01-26 2004-04-21 Massey University Method of separating and recovering proteins from a protein solution
DE19944273A1 (de) * 1999-09-15 2001-04-05 Alcan Gmbh Verfahren zum Ausstanzen von Ausschnitten aus zumindest einer Materialbahn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1754969A (en) * 1929-05-17 1930-04-15 John R Spoor Paper slitter
US2214593A (en) * 1939-08-08 1940-09-10 Frank H Fleer Corp Paper registering mechanism
US3367225A (en) * 1959-05-26 1968-02-06 Gen Binding Corp Trimmer assembly
US3532019A (en) * 1968-12-04 1970-10-06 United States Steel Corp Arbor adjustment for twin-disc rotary strip-edge trimmer
US3730043A (en) * 1970-11-09 1973-05-01 Ampex Apparatus for shearing webs
US3791246A (en) * 1973-02-26 1974-02-12 Eastman Machine Co Machine for cutting-sheet-like material such as fabric

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657505C (de) * 1934-06-24 1938-03-05 Saechsische Cartonnagen Maschi Verfahren und Maschine zum Herstellen von Schachtelzuschnitten aus Pappe, Karton o. dgl.
US3376774A (en) * 1966-01-24 1968-04-09 Adamson United Co Slitter and adjustable edge trimmer for a continuously moving web
GB1214212A (en) * 1968-06-07 1970-12-02 Wiggins Teape Res Dev Improvements in web slitting apparatus
BE729449A (sv) * 1969-03-06 1969-09-08

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1754969A (en) * 1929-05-17 1930-04-15 John R Spoor Paper slitter
US2214593A (en) * 1939-08-08 1940-09-10 Frank H Fleer Corp Paper registering mechanism
US3367225A (en) * 1959-05-26 1968-02-06 Gen Binding Corp Trimmer assembly
US3532019A (en) * 1968-12-04 1970-10-06 United States Steel Corp Arbor adjustment for twin-disc rotary strip-edge trimmer
US3730043A (en) * 1970-11-09 1973-05-01 Ampex Apparatus for shearing webs
US3791246A (en) * 1973-02-26 1974-02-12 Eastman Machine Co Machine for cutting-sheet-like material such as fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704930A (en) * 1984-05-03 1987-11-10 Jagenberg Ag Method and apparatus for removing edge strips from material webs of paper, cardboard or the like
US5309803A (en) * 1990-05-03 1994-05-10 Penniman David T System including method and apparatus for cutting each layer of a double-layered roll of sheet to different lengths and widths

Also Published As

Publication number Publication date
SE7411938L (sv) 1975-03-25
DE2347889A1 (de) 1975-04-03
SE414724B (sv) 1980-08-18
ES430322A1 (es) 1976-10-01
JPS5426035B2 (sv) 1979-09-01
ATA608974A (de) 1975-12-15
CH573800A5 (sv) 1976-03-31
FR2244604A1 (sv) 1975-04-18
NL7411960A (nl) 1975-03-26
IT1020832B (it) 1977-12-30
AT332213B (de) 1976-09-10
GB1428906A (en) 1976-03-24
FR2244604B1 (sv) 1977-07-08
JPS5058688A (sv) 1975-05-21
DE2347889C2 (de) 1989-08-31

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