EP0037805B1 - Schneidmaschine - Google Patents

Schneidmaschine Download PDF

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Publication number
EP0037805B1
EP0037805B1 EP81850058A EP81850058A EP0037805B1 EP 0037805 B1 EP0037805 B1 EP 0037805B1 EP 81850058 A EP81850058 A EP 81850058A EP 81850058 A EP81850058 A EP 81850058A EP 0037805 B1 EP0037805 B1 EP 0037805B1
Authority
EP
European Patent Office
Prior art keywords
tube
cutting
cutting machine
spindle
tube blank
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
Application number
EP81850058A
Other languages
English (en)
French (fr)
Other versions
EP0037805A1 (de
Inventor
Frank Lindholm
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.)
Nw Landegrens Mek Verkstad AB
Original Assignee
Nw Landegrens Mek Verkstad AB
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 Nw Landegrens Mek Verkstad AB filed Critical Nw Landegrens Mek Verkstad AB
Publication of EP0037805A1 publication Critical patent/EP0037805A1/de
Application granted granted Critical
Publication of EP0037805B1 publication Critical patent/EP0037805B1/de
Expired 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • 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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0616—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by carriages, e.g. for slicing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C1/00—Making tubes or pipes by feeding at right angles to the winding mandrel centre line

Definitions

  • the present invention relates to a cutting machine for cardboard tubes as described in the preamble of claim 1.
  • a cutting machine is known in the state of art.
  • an audit strip is printed or typed on paper delivered in rolls and wound on a tube.
  • Cardboard tubes are used in other areas as well, for example in shotgun shells, fireworks etc. The demands placed on such tubes are quite high and both the length and diameter must have exact dimensions.
  • Tube manufacture is described per se in our own Swedish Patent Specification 416 187 (published 8.12.80), according to which paper- tube blanks are wound on a spindle in long lengths which are then cut in a cutting machine to exact lengths. These can vary from less than 1 cm up to 15-20 cm or longer.
  • the cutting machine according to the invention is a further development of the cutting machine described in our above-mentioned patent, but it is of course not limited to use in connection with our tube machine; rather it can be used for spiral-wound tube blanks.
  • Fig. 1 shows a longitudinal section of the cutting machine according to the invention
  • Fig. 2 shows a cross-section along the line II-II in Fig. 1
  • Fig. 3 is a schematic representation of the operating cycle.
  • spindles 1-4 with the same diameter as the inner diameter of the tubes to be manufactured, are rotatably mounted on a stepwise rotatable turret 5.
  • the turret 5 is fixed to a shaft 6 mounted in a bearing housing 7.
  • a ratchet device for the shaft 6 is also arranged in the bearing housing, so that the shaft can be turned in steps of exactly 90° in response to control impulses from a control unit 8.
  • the spindles each have a short guide pin 9 at the end.
  • a tube blank is calibrated on spindle 2.
  • a calibrating pipe 20 or a calibrating ring is slidably mounted in a housing 22 on two uprights 23 in front of the spindle 2.
  • a pneumatic cylinder 25 presses the rod 24 and the calibrating pipe 20 forward, the sliding rod stopping against the end of the spindle 2 with the guide pin 9 fitting into a corresponding hole 26 at the front of the rod.
  • the calibrating pipe 20 which is bevelled 27 at the front, is then pulled over the tube blank 10 and then returned.
  • the tube blank is prevented from being drawn along with the pipe in the return movement by the front end of the rod.
  • the rod 24 follows along in the movement thus freeing the guide pin 9.
  • the tubes are cut to the desired length, and the outer ends which may be damaged during calibration are cut off.
  • a motordriven, rapidly rotating cutting spindle 30 with a number of blades 31, is pressed against the tube blank 10 on spindle 3, at the same time as a supporting center 32 with a hole 33 for the guide pin 9 is advanced into engagement.
  • the spindle 3 is supported in this manner and support rollers can also be placed in contact with the tube blank opposite to the cutting spindle.
  • the spindle 3 is rotatably mounted in the turret 5, it can rotate by itself so that the cuts are made around the entire circumference, but it can also be driven via one of the support rollers or via the support center 32.
  • the supporting center is retracted as are the cutting spindle and the supporting rollers through the operation of pneumatic cylinders.
  • the machine is operated by a control unit 8 sending impulses to pneumatic cylinders.
  • a control unit 8 sending impulses to pneumatic cylinders.
  • pneumatic cylinders have been mentioned as operating means, but electromagnetic or electric means or hydraulic cylinders can of course be used, even if pneumatic means have proved to be simplest in our machines which are primary operated pneumatically.
  • the cutting machine according to the invention has appreciable advantages over cutting machines which we have used previously.
  • the exact calibration and the improved exactness of the tubes in spite of the use of poorer paper qualities, has very great importance for its use.
  • both shotgun shells and tubes for paper rolls for a telex apparatus are very sensitive to even quite small unevenness.
  • the cutting machine has also been a bottleneck in tube manufacture, since an ordinary cutting spindle can only make about 20 strokes per minute.
  • the cutting machine according to the invention has two additional spindles, which theoretically produces a tripling of the possible speed. In practice, however, the possible speed is even greater, since the shifting between the various steps proceeds more rapidly than the previous ejecting of cut tubes and putting on of a new tube blank. At present, the machine is driven at about 40 strokes per minute, but a capacity of 60-70 strokes per minute has been shown to be possible, even for extended operation.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Details Of Cutting Devices (AREA)

Claims (3)

1. Schneidmaschine zum exakten Schneiden von Rohrrohlingen in Rohrlängen, bestehend aus einem auf einer Welle montierten, schrittweise drehbaren Drehkopf (5) mit vier drehbaren Spindeln (1-4), einer Aufschiebanordnung (12-14) für die Rohrrohlinge, einer Schneidvorrichtung (30-32) und einer Abschiebevorrichtung (40, 43) für die geschnittenen Rohre, dadurch gekennzeichnet, daß zwischen der Aufschiebvorrichtung und der Schneidvorrichtung eine Kalibriervorrichtung (20-25) zum Ausgleichen von Unregelmäßigkeiten und Ungleichförmigkeit der Rohrrohlinge, angeordnet ist und daß jede der Spindeln (1-4) derart angeordnet ist, daß sie nach einer Drehung des Drehkopfes (5) um 90° genau in Front der nächsten Behandlungsvorrichtung befindlich ist, und daß die Kalibriervorrichtung aus einem Rohr oder einem Ring (20) genauen Durchmessers besteht, das bzw. der einen abgefasten Innenrand (27) an dem Frontende aufweist, in einem Gehäuse (22) drehbar montiert ist und derart angeordnet ist, daß es bzw. er während des Kalibrierens über den Rohrrohling (10) gezogen wird und diesen vergleichmäßigt.
2. Verfahren unter Verwendung einer Schneidmaschine für Rohrrohlinge aus Papper oder Papier, dadurch gekennzeichnet, daß jeder Rohrrohling (12-14) vor dem Zerschneiden mittels eines Ringes (20) genauen Durchmessers kalibriert wird, wobei der Ring über den auf seiner Spindel (1-4) sitzenden Rohrrohling gedrückt wird.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der Rohrrohling vor dem Kalibrieren befeuchtet und aufgewärmt wird.
EP81850058A 1980-03-31 1981-03-30 Schneidmaschine Expired EP0037805B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8002467 1980-03-31
SE8002467A SE437350B (sv) 1980-03-31 1980-03-31 Skermaskin for kapning av hylsemnen

Publications (2)

Publication Number Publication Date
EP0037805A1 EP0037805A1 (de) 1981-10-14
EP0037805B1 true EP0037805B1 (de) 1984-07-11

Family

ID=20340651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81850058A Expired EP0037805B1 (de) 1980-03-31 1981-03-30 Schneidmaschine

Country Status (3)

Country Link
EP (1) EP0037805B1 (de)
DE (1) DE3164664D1 (de)
SE (1) SE437350B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916685A1 (de) * 1989-05-23 1990-11-29 Rolf Leveringhaus Spaltanlage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8300235A (nl) * 1983-01-22 1984-08-16 Rolco Int Bv Inrichting voor het snijden van een langgestrekte papierrol.
IT1224794B (it) * 1988-11-30 1990-10-24 Pisa A Macchina per tagliare automaticamente a misura, con posizionamento esattp di ciascun pezzo, elementi metallici tubolari di forma toroidale
GB9311072D0 (en) * 1993-05-28 1993-07-14 Aston Packaging Ltd Winding machine
ITPG20120035A1 (it) * 2012-09-07 2014-03-08 Roberto Rossi Sistema di taglio automatico per tubi di cartone e di plastica con impostazione della misura di taglio e prelievo automatico dal magazzino con scelta del formato velocita' nel cambio formato.
EP4159392B1 (de) * 2021-09-30 2024-04-03 CAVALIERI & AMORETTI S.r.l. Vorrichtung und verfahren zum schneiden eines kartonrohrs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575894A (en) * 1926-03-09 A cobpobaxioh
US3231445A (en) * 1962-11-05 1966-01-25 Dietz Machine Works Inc Continuously rotating tube cutting and labeling machine
FR1564868A (de) * 1968-03-01 1969-04-25
FR1569763A (de) * 1968-03-06 1969-06-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916685A1 (de) * 1989-05-23 1990-11-29 Rolf Leveringhaus Spaltanlage

Also Published As

Publication number Publication date
SE8002467L (sv) 1981-10-01
EP0037805A1 (de) 1981-10-14
SE437350B (sv) 1985-02-25
DE3164664D1 (en) 1984-08-16

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