EP0501123A1 - Vorrichtung zum Positionieren der Schneidkanten von Kreismesserpaaren einer Längsschneidmaschine für Bahnen aus Papier - Google Patents

Vorrichtung zum Positionieren der Schneidkanten von Kreismesserpaaren einer Längsschneidmaschine für Bahnen aus Papier Download PDF

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Publication number
EP0501123A1
EP0501123A1 EP92100653A EP92100653A EP0501123A1 EP 0501123 A1 EP0501123 A1 EP 0501123A1 EP 92100653 A EP92100653 A EP 92100653A EP 92100653 A EP92100653 A EP 92100653A EP 0501123 A1 EP0501123 A1 EP 0501123A1
Authority
EP
European Patent Office
Prior art keywords
knife
sensor
carriage
positioning
piston
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.)
Withdrawn
Application number
EP92100653A
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German (de)
English (en)
French (fr)
Inventor
Reiner Wittendorfer
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0501123A1 publication Critical patent/EP0501123A1/de
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the strain on the circular knives is very high at high speeds of up to 3000 m per minute. That is why the wear is very high. This applies in particular to the so-called bottom knife, which is cup-shaped. To eliminate irregularities in wear, the circular knives must therefore be reground from time to time. You do this with the bottom knife by regrinding the edge of the pot so that the pot becomes "lower". This can be amounts of up to 2 mm.
  • DE-OS 31 44 714 The basic idea of taking wear of the circular knives into account in the control can be seen in its own right from DE-OS 31 44 714. However, this is a device of a non-generic type, since each carriage has its own displacement drive motor. Wear electrodes are assigned to each slide, which supply the control system with electrical signals for adjusting the slide in question to compensate for knife wear. DE-OS 31 44 714 does not show how this is to be accomplished in detail and how, in particular, a corresponding measure is to be implemented on a generic longitudinal cutting device.
  • each knife carriage has a fixed (carriage-fixed) mark which, measured in the direction of travel of the carriage, is at a certain distance from the cutting edge of the lower knife. If a lower knife is reground and reassembled on the slide, the slide is guided past a fixed position sensor. Two signals are generated: one when passing the cutting edge on the position sensor, and the other when passing the carriage-fixed mark on the position sensor. The signals are fed into a microprocessor control. This control is intended to ensure precise positioning, taking into account the material decrease on the lower knife generated by grinding, by producing a correction measure.
  • a relative measure is thus initially obtained; from this an absolute measure for the actual knife position must first be determined by means of the control.
  • the invention has for its object to design a device according to the preamble of claim 1 such that the cutting edges can be positioned quickly and properly.
  • the control effort required for this should be less than since then.
  • the decisive idea here is to provide a fixed (machine-fixed) mark instead of a sled-fixed mark, and also one or more sensors that can be moved parallel to the carriageway of the knife carriage instead of fixed sensors.
  • these will be optical sensors.
  • this sensor is expediently mounted on a measuring slide that runs on a rail. In this case, the measuring slide with the sensor on it is moved past the individual knife slides and their cutting edges, always when changing a cutting position, for example when starting up the slitter rewinder, after replacing an old knife with a new one and after sharpening a knife .
  • the paper web runs vertically in the direction indicated by the arrow in FIG. 1 between the deflection rollers 2, 3, which are mounted in the machine frame M, and is cut longitudinally there.
  • the supply roll and the partial rolls on which the partial webs produced by the longitudinal cuts are rewound are not shown.
  • the division of the web is carried out by cooperating circular knives, namely the so-called lower knife 4 and the upper knife 5.
  • the lower knife 4 is mounted on a lower knife carriage, designated as a whole by 6, which is guided on a rail 7 connected to the machine frame M and extending across the width of the web .
  • a transport rod 8 is displaceable in the longitudinal direction, with which the lower knife carriage 6 can be connected as desired, in order to be able to move it along the rail 7 into a desired position, which corresponds to the position of the cut in the path 1.
  • the lower knife 4 is driven in the specified sense, while the upper knife 5 has no drive, but only runs loosely. It is mounted on the upper knife carriage, designated as a whole as 9, which, like the lower knife carriage 6, can be displaced by a transport rod 10 along a rail 11, which extends across the web width and is fastened to the machine frame M.
  • a pneumatic piston / cylinder unit 12 is arranged on the lower knife carriage 9, the piston 13 of which can be extended against the action of a spring 14 perpendicular to the path 1 against the lower knife carriage 6.
  • the piston / cylinder unit 12 serves to control the adjustment of the upper knife 5 against the lower knife 4, the piston / cylinder unit 16 brings about the abutment of the upper knife 5 on the front edge 19 of the lower knife 4 forming the cutting edge, a predetermined cutting pressure being maintained.
  • the control is done by everyone Upper knife carriage 9 associated solenoid valve 20 which, when actuated, allows compressed air from the supply line 21 to pass via the line 22 behind the piston 13 of the piston / cylinder unit 12, whereby the upper knife 5 according to FIG. 1 is shifted to the right.
  • the channel 23 formed in the piston 13 and the piston rod 15 comes into connection with the compressed air supply line 22 and receives the piston / cylinder unit 16 compressed air, so that the upper knife 5 is pulled against the end face 19 of the lower knife 4.
  • the actuation takes place in a sequence that prevents the upper knife 5 from bumping against the circumference of the lower knife 4.
  • the compressed air is brought in via a line 26.
  • the locking and unlocking device explained in more detail in connection with FIGS. 6 and 7 is such that it either releases the slides 6, 9 on the rails 7, 11 and simultaneously couples with the transport rods 8, 11 or decouples from them and on the rails 7, 11 locked.
  • the actuation of the locking and unlocking device is done by the solenoid valve 30 via lines 27, 28 on the carriage 6, 9 simultaneously, so that both carriages 6, 9 can be moved simultaneously.
  • the two deflection rollers 2 and 3 can again be seen, as well as a movable sensor 31, a measuring slide 32, a rail 33 assigned to it and a machine-fixed mark 34.
  • the sensor 31 and the measuring slide 32 can be displaced in the direction of the double arrow A; the direction of measurement is indicated by arrow B.
  • the actual position values are formed with the help of an up / down counter.
  • a reference point (switch cam or scale mark) is approached and the counter is set to zero. This reference point corresponds to the scale zero point.
  • the counter is counted up with each travel step in one direction and the counter is counted down with each travel step in the other direction.
  • the actual position value in relation to the reference point is always in the counter.
  • Each of the knife edges gives a signal i, which are added up by the control.
  • the edge knife at the end of the measuring section is an exception.
  • This process must take place within a distance of approximately 150 mm, since the distance from the lower knife to the lower knife can be at least 180 mm.
  • the corresponding sensor must give an impulse to the control and the incremental measured value is recorded.
  • the switching process takes place without another edge signal.
  • the final value of the signal impulses reverses the movement process. This means that the maximum value of the signal pulses then causes the direction to be reversed and the piston to change speed.
  • the reverse gear takes place at the rapid traverse speed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)
EP92100653A 1991-02-27 1992-01-16 Vorrichtung zum Positionieren der Schneidkanten von Kreismesserpaaren einer Längsschneidmaschine für Bahnen aus Papier Withdrawn EP0501123A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4106069 1991-02-27
DE19914106069 DE4106069C1 (fi) 1991-02-27 1991-02-27

Publications (1)

Publication Number Publication Date
EP0501123A1 true EP0501123A1 (de) 1992-09-02

Family

ID=6425954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92100653A Withdrawn EP0501123A1 (de) 1991-02-27 1992-01-16 Vorrichtung zum Positionieren der Schneidkanten von Kreismesserpaaren einer Längsschneidmaschine für Bahnen aus Papier

Country Status (7)

Country Link
EP (1) EP0501123A1 (fi)
JP (1) JPH04310397A (fi)
BR (1) BR9200796A (fi)
CA (1) CA2062019A1 (fi)
DE (1) DE4106069C1 (fi)
FI (1) FI920854A (fi)
NO (1) NO920761L (fi)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290496A (en) * 1994-06-22 1996-01-03 Dienes Werke Positioning device for blades on cutting machines
WO2001085408A2 (de) * 2000-05-12 2001-11-15 Wilhelm Bilstein KG Spezialfabrik für Maschinenmesser und Kompressorventile Verfahren zur positionierung von untermessern an einer einrichtung zum längsteilen einer materialbahn
EP0976509A3 (de) * 1998-07-22 2002-12-04 Voith Paper Patent GmbH Verfahren und Vorrichtung zum Längsschneiden einer Materialbahn
WO2004101405A1 (de) * 2003-05-13 2004-11-25 Windmöller & Hölscher Kg Wickelvorrichtung mit einer strahlungsquelle zur positionierung der wickelhülsen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219670C1 (en) * 1992-06-16 1993-07-01 J.M. Voith Gmbh, 7920 Heidenheim, De Paper strip cutter with adjustable positioning system - moves knife slides along rail past first pre-positioned sensor, then travels on to second pre-positioned sensor, thus being accurately positioned
US5735184A (en) * 1995-10-27 1998-04-07 Tidland Corporation Powered tool positioner system
DE19634825A1 (de) * 1996-08-28 1998-03-05 Siemens Ag Verfahren und Gerät zur Erstellung und Optimierung eines Schneidplanes für einen Rollenschneider
DE20006995U1 (de) 2000-04-15 2000-07-27 Mathias Bäuerle GmbH, 78112 St Georgen Vorrichtung zur Bearbeitung von durchlaufenden Bogen oder Bahnen aus Papier, Pappe oder Folienmaterial
SE0700435L (sv) * 2007-02-22 2007-12-27 Trancel Restatic Ab Knivaggregat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093189A (en) * 1981-02-17 1982-08-25 Metal Box Co Ltd Position setting device
FR2541924A1 (fr) * 1983-03-01 1984-09-07 Waertsilae Oy Ab Procede et dispositif de determination d'une position

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417042A1 (de) * 1984-05-09 1985-11-14 Lenox Europa Maschinen GmbH, 7312 Kirchheim Verfahren zur steuerung der lage der schneidkanten an einer laengsschneidevorrichtung fuer bahnen aus papier und dergleichen sowie entsprechende laengsschneidevorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093189A (en) * 1981-02-17 1982-08-25 Metal Box Co Ltd Position setting device
FR2541924A1 (fr) * 1983-03-01 1984-09-07 Waertsilae Oy Ab Procede et dispositif de determination d'une position

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290496A (en) * 1994-06-22 1996-01-03 Dienes Werke Positioning device for blades on cutting machines
GB2290496B (en) * 1994-06-22 1997-11-12 Dienes Werke Positioning device for lower blades on straight-line cutting machines
EP0976509A3 (de) * 1998-07-22 2002-12-04 Voith Paper Patent GmbH Verfahren und Vorrichtung zum Längsschneiden einer Materialbahn
WO2001085408A2 (de) * 2000-05-12 2001-11-15 Wilhelm Bilstein KG Spezialfabrik für Maschinenmesser und Kompressorventile Verfahren zur positionierung von untermessern an einer einrichtung zum längsteilen einer materialbahn
WO2001085408A3 (de) * 2000-05-12 2002-06-20 Bilstein Spezialfab Wilhelm Verfahren zur positionierung von untermessern an einer einrichtung zum längsteilen einer materialbahn
DE10023210B4 (de) * 2000-05-12 2004-03-11 Wilhelm Bilstein KG Spezialfabrik für Maschinenmesser und Kompressorventile Verfahren zur Positionierung von Untermessern an einer Einrichtung zum Längsteilen einer Materialbahn
WO2004101405A1 (de) * 2003-05-13 2004-11-25 Windmöller & Hölscher Kg Wickelvorrichtung mit einer strahlungsquelle zur positionierung der wickelhülsen
US7552889B2 (en) 2003-05-13 2009-06-30 Windmoeller & Hoelscher Kg Winding-up device provided with a radiation source for positioning winding cores

Also Published As

Publication number Publication date
FI920854A0 (fi) 1992-02-26
CA2062019A1 (en) 1992-08-28
JPH04310397A (ja) 1992-11-02
BR9200796A (pt) 1992-11-17
NO920761D0 (no) 1992-02-26
DE4106069C1 (fi) 1992-05-21
NO920761L (no) 1992-08-28
FI920854A (fi) 1992-08-28

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