US3324752A - Guillotine for cutting webs - Google Patents

Guillotine for cutting webs Download PDF

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Publication number
US3324752A
US3324752A US47884465A US3324752A US 3324752 A US3324752 A US 3324752A US 47884465 A US47884465 A US 47884465A US 3324752 A US3324752 A US 3324752A
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US
United States
Prior art keywords
knife
web
guide
guiding
guillotine
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
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English (en)
Inventor
Brockmuller Friedrich Franz
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Application granted granted Critical
Publication of US3324752A publication Critical patent/US3324752A/en
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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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • 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
    • B26D2007/2671—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for cutters moving in a planetary motion on their support, e.g. so-called "Ferris Wheels"
    • 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
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4783—Constantly oriented tool with arcuate cutting path
    • Y10T83/4786—Cutting couple type

Definitions

  • This invention relates to a guillotine for cutting webs, particularly of plastic material sheeting and paper, in which guillotine each of the cooperating knife beams, which carry the knives, extends transversely to the direction of the advance of the web and revolves around an axis which is spaced from the web to sever sheets from the continuously moving web, said knife beams being guided parallel to themselves with the knives in a position at right angles to the plane of the web by means of a parallel-holding mechanism. With this arrangement and guidance of the knives, the sheets can be severed from the continuously advancing web by a smooth cut giving neat edges, as a cut with scissors.
  • each knife beam has at least one guiding element disposed laterally beside its knife, and the guiding elements on the knife beams are oppositely arranged, and as the knife beams approach each other the guiding elements interengage and guide the knife beams during the cutting operation.
  • the provision of the guiding elements disposed outside the area of the web enables a mutual guidance of the knife beams which carry the two knives so that any backlash which may be present in the drive and the bearings of each knife beam is rendered ineffective because the two parts which cooperate in performing the cut mutually adjust themselves to the correct position, in which the knives slide on each other during the cutting operation.
  • one of the cooperating guiding elements may consist of a guide bar which has a guiding surface that is substantially at right angles to the plane of the web
  • the other guiding element may consist of a roller, which is rotatably mounted on the associated knife beam and is preferably formed by the outer race of a radial anti-friction bearing.
  • each knife beam has close to one end two forked guide bars, which are staggered relative to each other in the longitudinal direction of the beam, and two radial bearings, which are related to each other in accordance with the staggering of the guide bars, are mounted at the other end on the journal of the knife beam, the guide bars of each knife beam coopertaing with the bearing races of the other knife beam.
  • each guide bar bears unilaterally on the associated radial bearing so that a detrimental effect of the internal backlash of the bearing is also prevented.
  • the position of the guiding surfaces may be variable according to the invention in the transverse direction of the knife beam by the provision of shims between the knife beam and the part for mounting the guide bar.
  • An addition or removal of such shims Will then enable an exact adjusting of the guide bar in accordance with the anti-friction bearing associated with it and to the pressure exerted by each guide bar on the associated anti-friction bearing.
  • the invention proposes to eliminate also the backlash between the gears of the parallel-holding mechanisms.
  • gear of each parallel-holding mechanism which is stationary in operation is angularly adjustable when the guiding elements are interengaged and said gear can be clamped against the machine frame.
  • An angular adjustment of this gear by a very small amount When the machine is at a standstill will result in a mutual clamping of the gears of this parallelholding mechanism so that any backlash which previously existed between them is eliminated.
  • the gear which is stationary during operation is then firmly connected to the machine frame, e.g., by means of a clamping ring.
  • the interengagement of the guiding elements will Cause a mutual clamping of the gears of the parallel-holding mechanisms so that the knife beams which guide each other are held Without backlash at both ends during the cutting operation.
  • FIG. 1 is a longitudinal sectional view showing a guillotine which is provided wiht the guiding device according to the invention
  • FIG. 2 is a sectional view taken on line II-II in FIG. 1;
  • FIG. 3 is a sectional view taken on line III- III in FIG. 1;
  • FIG. 4 shows a modification of a detail of the guide device according to the invention.
  • Two shafts 3 and 4 which are arranged one vertically over the other, are rotatably mounted in two walls 1 and 2 of a machine Iframe.
  • One of these shafts, for instance the shaft 3, is coupled to a drive, not shown, and imparts rotation to a pair of gears 5, 6, which are firmly connected to the shaft.
  • the rotation of the gears 5 and 6 is transmitted to gears 7 and 8, which are nonrotatably connected to the shaft 4.
  • Journals 9 are rotatably mounted in the gears 5 and 6 and carry a knife beam 10, which is provided with a lower knife 11.
  • Journals 12 are rotatably mounted in the gears 7 and 8 and carry a knife -beam 13 provided with an upper knife 14.
  • each of the guide jaws 22 and 23 comprises -an extension, which forms a guide 'bar 25 or 26.
  • the guide bars 25 and 26 are relatively staggered. In the instantaneous position which is shown, each of them lies on one side of one of two anti-friction bearings 27 and 28, which are mounted on the journal 12 that is adjacent to the parallel-holding mechanism 18 to 20.
  • two guide jaws 29 and 30 are secured by a screw 31 to that end of the upper knife beam 13 which is remote from the parallel-holding mechanism 18 to 20.
  • the guide jaws 29 and have two guide bars 32 and 33, which are relatively staggered and each of which is arranged to engage on one side of one of two anti-friction bearings 34 and 35 provided on that journal 9 which is disposed adjacent to the parallel-holding mechanism 15 to 17.
  • These guide bars 32 and 33 together with the guide bars 25 and 26 ensure a guidance of the knives 11 and 14 when the knife beams 10 and 13 are in the position which is shown in the drawing and in which a cut through the web is effected.
  • Shims 36 are provided between each guide jaw 22, 23, 29, 30 and the respective knife beam 10 or 13. Such shirns may be added or removed to effect an exact adjustment of the guide bars 25, 26, 32, 33, which are integral with the respective guide jaws, so that these bars will match the internal backlash of the respective anti-friction bearing.
  • gear 17 or 20 of the parallel-holding mechanisms which is stationary during operation, is angularly adjusted by means of the idler 16 or 19 against the gear 15 or 18, which is secured to the respective journal.
  • the journals 9 and 12 assume the position which is shown in the drawing and in which they are mutually held by the guide jaws so that the .gears 15 and 18 are also held against rotation. This results in a mutual clamping of the gears.
  • the gear 17 or 20 is then firmly connected to the wall 1 or 2 of the machine frame by means of a clamping ring 37 (FIG. 4) in the position to which it has been moved by the angular adjustment.
  • the elimination of the backlash between the gears of the parallel-holding mechanisms ensures a further improvement of the guidance of the knives.
  • the backlash between the gears of the parallel-holding mechanisms may alternatively be eliminated in that the journals 9, 12 when they are in the position shown in the drawing, as well as the gears 15 and 18 secured thereto, are angularly adjusted by the gears 16 and 19 against the gears 17 and 20 secured to the machine frame.
  • This angular adjustment may be effected by a corresponding lateral displacement of the guide jaws by means of the shims and results also in a mutual clamping of the gears during the cutting operation so as to ensure a positive guidance of the knife beams.
  • This arrangement may involve a slight canting of the knife beams.
  • the corners 38 and 39 are suitably slightly rounded as an additional feature to ensure a satisfactory movement of the knives past each other.
  • a guillotine for cutting webs particularly of plastic material sheeting and paper, comprising a pair of cooperating knife beams each carrying a knife and extending transversely to the direction of the advance of the web and revolving around an axis which is spaced from the web to sever sheets from the continuously moving web, parallel holding means guiding said knife means parallel to each other with the knives in a position at right angies to the plane of the web, guiding elements carried on each knife beam and so arranged that as the knife beams approach each other they cooperatively interengage and guide the knife beams during the cutting operation, at least one of said guiding elements on each knife beam being disposed laterally beside its knife and consisting of a guide bar having a guiding surface substantially normal to the plane of the web and cooperatively interengaging a guiding element consisting of a roller.
  • a guillotine for cutting webs particularly of plastic material sheeting and paper, comprising a frame, a pair of cooperating knife beams each carrying a knife and extending transversely to the direction of the advance of the web and revolving around an axis which is spaced from the web to sever sheets from the continuously moving web, parallel holding means guiding said knife beams parallel to each other with the knives in a position at right angles to the plane of the web, guiding elements carried on each knife beam being so arranged that as the knife beams approach each other the guiding elements cooperatively interengage and guide the knife beams during the cutting operation, said parallel holding means including a number of gears, a gear means, and a clamping means, said gear means being stationary when said guillotine is in operation and angularly adjustable when the guiding elements are interengaged to take up any backlash that might exist between said gears, said clamping means being provided to maintain said gear means stationary while the guillotine is in operation by clamping said gear means against the frame of the
  • a guillotine according to claim 1 characterized in that said roller is formed by the outer race of a radial anti-friction bearing.
  • each knife beam has disposed laterally to one side of its knife a forked guide member the legs of which are guide bars and are staggered in the longitudinal direction of the beam, and disposed laterally to the other side two radial bearings, with the radial bearing on one beam cooperating with and registering with the guide bars on the other beam.
  • a guillotine according to claim 4 characterized in that the position of the guiding bars is variable in the transverse direction of the knife beam by the provision of Shims between the knife beam and the forked guide member mounted thereon.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Making Paper Articles (AREA)
US47884465 1964-11-30 1965-08-11 Guillotine for cutting webs Expired - Lifetime US3324752A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW0038063 1964-11-30
FR37200A FR1454688A (fr) 1964-11-30 1965-11-04 Dispositif de sectionnement transversal pour feuilles continues de matériau

Publications (1)

Publication Number Publication Date
US3324752A true US3324752A (en) 1967-06-13

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ID=26002711

Family Applications (1)

Application Number Title Priority Date Filing Date
US47884465 Expired - Lifetime US3324752A (en) 1964-11-30 1965-08-11 Guillotine for cutting webs

Country Status (3)

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US (1) US3324752A (enExample)
DE (1) DE1249667B (enExample)
FR (1) FR1454688A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786707A (en) * 1971-05-29 1974-01-22 Heye H Apparatus for cutting off successive portions from a strand of plastic material such as a strand of viscous glass

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2628688B2 (de) * 1976-06-25 1979-10-11 K.K. Token Kikai Seisakusho, Daito, Osaka (Japan) Vorrichtung zum Schneiden eines sich bewegenden Materialstreifens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989012A (en) * 1934-07-24 1935-01-22 Kalko Stephen Cylinder rotary cut-off knife
DE906536C (de) * 1950-11-05 1954-03-15 Erich Juenemann Mit umlaufenden Messern versehene Schneidvorrichtung
US3066542A (en) * 1955-04-12 1962-12-04 Nat Gypsum Co Continuous web perforating machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989012A (en) * 1934-07-24 1935-01-22 Kalko Stephen Cylinder rotary cut-off knife
DE906536C (de) * 1950-11-05 1954-03-15 Erich Juenemann Mit umlaufenden Messern versehene Schneidvorrichtung
US3066542A (en) * 1955-04-12 1962-12-04 Nat Gypsum Co Continuous web perforating machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786707A (en) * 1971-05-29 1974-01-22 Heye H Apparatus for cutting off successive portions from a strand of plastic material such as a strand of viscous glass

Also Published As

Publication number Publication date
FR1454688A (fr) 1966-02-11
DE1249667B (enExample) 1967-09-07

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