EP1268145A1 - Vorrichtung zum schneiden von papierbahnen - Google Patents
Vorrichtung zum schneiden von papierbahnenInfo
- Publication number
- EP1268145A1 EP1268145A1 EP01929310A EP01929310A EP1268145A1 EP 1268145 A1 EP1268145 A1 EP 1268145A1 EP 01929310 A EP01929310 A EP 01929310A EP 01929310 A EP01929310 A EP 01929310A EP 1268145 A1 EP1268145 A1 EP 1268145A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- paper web
- cutting
- paper
- jet
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
- B26F3/008—Energy dissipating devices therefor, e.g. catchers; Supporting beds therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
- B41F13/56—Folding or cutting
- B41F13/58—Folding or cutting lengthwise
-
- 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
- Y10T83/2066—By fluid current
-
- 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
- Y10T83/364—By fluid blast and/or suction
-
- 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
- Y10T83/6638—Unattached manual work pusher
Definitions
- the present invention relates to a device for cutting paper webs according to the preamble of claims 1, 2, 3 or 4.
- Such devices come e.g. B. in high-speed web-fed presses for the printing of magazines and other printed products with long runs to break down a wide web, on which several pages of the printed product are printed side by side, into partial webs, each corresponding to a single page.
- the partial webs separated in this way are fed bundled to the folder.
- the invention has for its object to provide a device for cutting paper webs.
- known cutting devices for use on printing machines comprise rotating so-called top and lower knife between which the paper web is passed.
- one of these patterns represents a deflection roller for the paper web.
- care must be taken to ensure that their peripheral speed corresponds to the running speed of the paper web to be dismantled, so that they do not exert any braking or acceleration forces on the high web Web speeds of modern printing machines can easily lead to tearing of the paper web.
- Regular maintenance of these knives is necessary to ensure that the paper web is actually cut clean at all times and is not torn with blunted or poorly adjusted blades.
- the blades must therefore be accessible to maintenance personnel and they must be interchangeable. Access to their installation location must therefore be provided, which means that the processing line, consisting of a printing press, a device for cutting and a folder, requires a considerable amount of space.
- Another advantage is that the device according to the invention requires little maintenance in comparison to the conventional knife arrangements.
- the distance from the cutting nozzle to the paper web preferably corresponds to three to ten times the sound propagation time across the jet diameter. It will namely, suspects that the high-speed jet generated by the nozzle passes through three phases on its way, a first in which it forms a coherent jet, a second in which the coherent jet breaks down into a series of coarse drops, and a third phase, in which in turn disintegrates the coarse drops into fine droplets.
- the jet is well suited for cutting homogeneous media
- the jet in the second phase, in which the individual drops exert an intermittent force on the material to be cut, the jet is particularly suitable for cutting media that have an internal structure, such as mineral granular materials or stacks of paper with a layered structure.
- a collecting container for the cutting jet is arranged on a side of the web opposite the nozzle at a distance of preferably 5 to 15 mm from the web. Such a distance is small enough on the one hand to reliably catch the beam that has passed through the web and on the other hand large enough to prevent the web from being pressed against the collecting container in the event of fluctuations in the tension of the web.
- the collecting container should be constructed in such a way that on the one hand it reliably brakes the cutting jet, but at the same time prevents water dust that arises during braking from escaping from the collecting container in the direction of the web. In addition, it should be avoided that the jet still exerts its cutting effect in the collecting container.
- the collecting container has at least one impact surface arranged obliquely to the beam direction for braking the beam. With such an oblique arrangement, it is only the velocity component of the beam perpendicular to the impact surface that can develop the cutting effect. This component is proportional to the cosine of the angle that the beam forms with the surface normal of the impact surface.
- the cutting device comprises a plurality of nozzles arranged in a row for simultaneously cutting a web into a large number of partial webs.
- the collecting container it is expedient for the collecting container to extend along the row in order to collect the jets from all the nozzles.
- the collecting container can be subjected to a negative pressure.
- the device can also be used for cutting webs which consist of several layers of paper stacked on top of one another.
- the distance between the nozzle and the web will be chosen rather in the upper range of the above-mentioned distance interval to ensure that the jet hits the web in its second phase.
- FIG. 1 shows a device according to the invention in a highly schematic section
- FIG. 2 shows a plan view of part of the device from FIG. 1;
- FIG. 3 shows the cutting device from FIG. 1 in an enlarged view
- FIG. 4 shows a nozzle which can be used in the device according to the invention for cutting in an axial section
- Fig. 5 shows an advantageous application of the device according to the invention.
- Fig. 1 shows the device according to the invention in a sectional view.
- the device is arranged above the superstructure of a folder and is therefore located a few meters above the floor of a hall in which the folder is set up. It receives a paper web 01 from a web-fed rotary printing press that is also set up on the hall floor.
- the web-fed rotary printing press, the superstructure and the folder can be of any known type, they are therefore not shown in the figure and are not described in detail.
- the paper web 01 runs obliquely from below into the device for cutting from below in the direction of arrow 02. There, the paper web 01 is on a plurality of rollers 03; 04; 05; 06 guided, which are each held between two side walls of the device. One of these side walls 07 is shown in the figure.
- One of these rollers is a regulating roller 04 with a displaceable axis to compensate for cutting differences in the paper web 01, furthermore a driven pull roller 05 for adjusting the web tension and finally a guide roller 06.
- the paper web 01 is guided horizontally across an accessible gallery 08 to a guide roller 09.
- the gallery 08 enables operating personnel to access the various rollers of the device in order to carry out maintenance work there or to feed a new paper web into the device.
- Water jet cutting device 10 is on the horizontal section 11 of the paper web 01 between the two guide rollers 06; 09 mounted.
- the water jet cutting device 10 comprises a plurality of nozzle holders 20, which are supplied with water at a pressure of 3500 to 4200 bar, typically 3800 bar, by a high-pressure pump or a pressure transformer, not shown, and a nozzle for forming a nozzle, which is shown in detail in FIG Wear high pressure water jet.
- These nozzle holders 20 are on a support rod 21 which extends across the entire width of the cutting device between its side walls 07.
- FIG. 2 shows a plan view of a part of the device from FIG. 1, in which the support rod 21 with four nozzle holders 20 mounted thereon with the aid of clamps 23 can be clearly seen.
- FIG. 3 shows the water jet cutting device 10 from FIG. 1 in detail.
- the nozzle holder 20 is a cylindrical hollow body made of metal; At its upper end, a supply line 22 is screwed, via which the nozzle holder 20 can be acted upon by high pressure water from the pump. At the lower end of the nozzle holder 20 there is a nozzle 40 with an outlet diameter of 0.1 mm, through which a high-pressure water jet 24 emerges for cutting the paper web 01 conveyed in the direction of the arrow. The exit velocity of the jet 24 is determined by the pressure of the water in front of the nozzle.
- the exit velocity is approximately 800 m / s, which is more than half the speed of sound in water of 1500 m / s
- the transit time of a pressure or sound signal from one side of the jet 24 to the opposite side is approximately 0.67 ⁇ s.
- the beam 24 travels approximately 0.54 mm. Since the transition of the beam 24 from the first to the second phase presupposes interactions between different areas of the beam 24 which cannot propagate in the beam 24 faster than the speed of sound, it is obvious that the transition to the second phase cannot take place before a sound signal has not had time to reciprocate a few times between opposite sides of the beam 24. The beam 24 travels approx.
- a working distance D1 between the nozzle 40 and the paper web 01 is therefore chosen which is covered by the jet 24 in a time which is 5 to 6 travel times of the sound transversely to the jet direction corresponds, in the present case a distance of approx. 3 mm.
- the jet 24 After the jet 24 has penetrated the paper web 01, it enters a collecting container 25, the upper side 26 of which extends transversely to the paper web 01 at a distance D2 of approximately 10 mm and each has a receiving opening 27 for the nozzle 40 opposite it Beam 24 has.
- the collecting container 25 forms a substantially closed chamber, with the exception of the receiving openings 27 and a drain opening 30, which extends transversely to the running direction of the paper web 01.
- the diameter of the receiving opening 27 corresponds approximately to the distance D2 between the upper side 26 and the paper web 01, so that any laterally deflected parts of the jet, paper and water dusts, are reliably collected by the receiving opening 27 even when the paper web 01 is pierced.
- the jet 24 travels a distance of approximately 10 to 15 cm before it strikes an impact surface 28, e.g. B. in the form of a steel sheet, whose surface normal forms an angle ⁇ of approximately 45 ° or more with the beam 24.
- the distance between the baffle 28 and the nozzle 40 is selected so that the jet 24 decelerated on its way through the paper web 01 and the air no longer has any noteworthy cutting effect on the baffle 28.
- a second baffle surface 29 is part of the housing of the collecting container 25. It is arranged such that it is struck by a large part of the jet water scattered on the first baffle surface 28.
- the water flows to the bottom of the collecting container 25, which is shaped in the manner of a rain gutter to the drain opening 30.
- the water can flow through the drain opening 30 solely by the action of gravity; however, a suction pump (not shown) can also be connected to the drain opening in order, if necessary, to remove water and / or paper dusts from the zone in which the jet 24 cuts the paper web 01 into the collecting container 25 suck in.
- a suction pump (not shown) can also be connected to the drain opening in order, if necessary, to remove water and / or paper dusts from the zone in which the jet 24 cuts the paper web 01 into the collecting container 25 suck in.
- Fig. 4 shows an example of a possible structure of the lower region of the nozzle holder 20 with the nozzle 40 forming the jet 24.
- the nozzle holder 20 is a substantially cylindrical body made of metal, e.g. B. made of stainless steel, with a central longitudinal channel 41 which is connected at its (not shown in Fig. 4) upper end to the feed line 22.
- the longitudinal channel 41 opens onto an enlarged cylindrical section 42 which is open at the bottom and whose inner wall carries an internal thread.
- An insert 43 is screwed into this internal thread and has a lower cylindrical section and an upper frustoconical section 44.
- a bore 45 tapering downward extends the longitudinal channel 41 in the insert 43.
- the nozzle 40 rests on a shoulder 49 at the bottom of the tapered bore 45. It is fixed in this position by a sealing ring 51, which is also pressed against the shoulder 49 by the water pressure prevailing in the bore 45 and thus centers the nozzle 40.
- the nozzle 40 has a free diameter of 0.1 mm. This diameter proves to be particularly suitable for cutting paper, since on the one hand the small diameter leads to a low water throughput of the nozzle 40 and thus to a low risk of moistening the cut paper, and on the other hand the momentum of the jet is still high enough when the pre-pressure is used, to cleanly cut paper web 01 even at high web speeds.
- the frustoconical section 44 ends in a sharp edge 50 which is pressed against the end face 46 of the enlarged section 42 when the insert 43 is screwed in, so as to form a seal, e.g. B. by cold welding, between the nozzle holder 20 and the insert 43.
- a ring 47 made of a soft metal, such as copper can be inserted into the end face 46 in the region of the edge 50, as indicated by dashed lines in FIG. 4.
- annular cavity 48 is provided in the nozzle holder 20 which surrounds the frusto-conical section 44 all around and which absorbs water passing between the edge 50 and the upper inner surface .
- the cavity 48 is connected to the environment via a radial bore 52 through which the water can escape. Since this water must under no circumstances drip onto the paper web 01 to be cut, the bore 52 is extended to the outside by a connecting piece 53, onto which a hose 54 for draining off the water is attached. Since the water in the cavity 48 is essentially at atmospheric pressure, there are no special requirements for the pressure resistance of the hose 54 and its attachment to the socket 53 posed.
- a simple hose clamp is e.g. B. for attaching the hose 54 completely sufficient.
- FIG. 5 schematically shows a further developed application of the device according to the invention, which is designated here as a whole by reference number 60.
- paper webs 01 are stacked on top of one another by a plurality of printing machines 61, i. H. a multi-layer paper web 01 'layered from several individual webs is cut by the device.
- multilayer partial webs are obtained at the exit of the device, and the number of partial webs that must be brought together in the superstructure 62 of the folder 63 in order, for. B. build a booklet with a given number of pages is reduced. It is also conceivable to feed the cut multilayered partial webs directly to the folder 63 without interposing a superstructure.
- the jet 24 is in the second phase, the distance between the nozzle 40 and the paper web 01' is therefore chosen to be greater than that stated with reference to FIG Ten times the sound propagation time across the beam direction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Advancing Webs (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10017288 | 2000-04-06 | ||
DE10017288A DE10017288A1 (de) | 2000-04-06 | 2000-04-06 | Vorrichtung zum Schneiden von Papierbahnen |
PCT/DE2001/001285 WO2001076835A1 (de) | 2000-04-06 | 2001-04-02 | Vorrichtung zum schneiden von papierbahnen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1268145A1 true EP1268145A1 (de) | 2003-01-02 |
EP1268145B1 EP1268145B1 (de) | 2006-01-18 |
Family
ID=7637893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01929310A Expired - Lifetime EP1268145B1 (de) | 2000-04-06 | 2001-04-02 | Vorrichtung zum schneiden von papierbahnen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6834849B2 (de) |
EP (1) | EP1268145B1 (de) |
JP (1) | JP2004506523A (de) |
AT (1) | ATE315985T1 (de) |
AU (1) | AU5613501A (de) |
DE (2) | DE10017288A1 (de) |
WO (1) | WO2001076835A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10217723A1 (de) * | 2002-04-20 | 2003-10-30 | Voith Paper Patent Gmbh | Wasserstrahl-Schneideinrichtung |
US20110240706A1 (en) * | 2010-03-30 | 2011-10-06 | Brian Christopher Schwamberger | Web diverting apparatus |
US9108229B2 (en) | 2011-06-17 | 2015-08-18 | The Procter & Gamble Company | Method and apparatus for particulate removal from moving paper webs |
JP5639633B2 (ja) * | 2011-11-02 | 2014-12-10 | 株式会社北川鉄工所 | 難加工性材料のウォータージェット加工方法 |
US8968519B2 (en) * | 2013-03-14 | 2015-03-03 | Georgia-Pacific Consumer Products Lp | Sheet edge trimming and removal from a structured paper fabric |
DE102014220651A1 (de) * | 2014-10-13 | 2015-12-03 | Voith Patent Gmbh | Wasserstrahl-Schneideinrichtung |
CN107073738A (zh) * | 2014-10-24 | 2017-08-18 | 福伊特专利有限公司 | 水射流切割装置 |
CN107175902A (zh) * | 2017-07-10 | 2017-09-19 | 广东云印科技有限公司 | 一种具有转位功能的印刷设备 |
KR20220034168A (ko) * | 2019-07-11 | 2022-03-17 | 봅스트 리옹 | 폴딩된 박스를 형성하게 되는 골판지 블랭크를 폴딩하는 방법 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2506445A (en) * | 1945-08-28 | 1950-05-02 | Henry B Donning | Sheet cutting apparatus for printing presses |
US4137804A (en) * | 1974-07-12 | 1979-02-06 | Gerber Garment Technology, Inc. | Fluid cutting jet receiver |
DE2656242C2 (de) * | 1976-12-11 | 1978-12-21 | J.M. Voith Gmbh, 7920 Heidenheim | Vorrichtung zum Trennen einer Faserbahn |
US4140038A (en) * | 1977-01-11 | 1979-02-20 | Camsco, Inc. | Fluid jet cutter |
US4266112A (en) | 1979-02-14 | 1981-05-05 | Niedermeyer William P | Web-cutting process |
US4966059A (en) * | 1987-09-22 | 1990-10-30 | First Brands Corporation | Apparatus and process for high speed waterjet cutting of extensible sheeting |
US5961758A (en) * | 1989-03-30 | 1999-10-05 | Ferag Ag | Process for manufacturing booklets |
DE9103749U1 (de) * | 1991-03-27 | 1991-06-27 | J.M. Voith Gmbh, 7920 Heidenheim | Wasserstrahl-Schneideinrichtung |
FI87813C (fi) * | 1991-11-19 | 1993-02-25 | Valmet Paper Machinery Inc | Metod foer avskaerning av pappers- eller kartongmaskinens spetsfoeringsremsa pao maskinens torkparti |
FI92608C (fi) * | 1992-09-01 | 1994-12-12 | Metsae Serla Oy | Menetelmä ja laite kuiturainan reunakaistaleen leikkaamiseksi |
DE9317447U1 (de) * | 1993-11-15 | 1994-01-20 | Büttner, Mike, 97318 Kitzingen | Anlage zum Reinigen und/oder Abtragen der Oberfläche eines Werkstücks |
FI94231C (fi) * | 1993-12-16 | 1995-08-10 | Valmet Paper Machinery Inc | Menetelmä ja laite paperi- tai kartonkirainan kiinnirullauksessa pope-rullaimessa tai vastaavassa |
FI98346C (fi) | 1994-03-31 | 1997-06-10 | Enfoplan Oy | Menetelmä ja laitteisto liikkuvan paperirainan reunan leikkaamiseksi |
DE4442411B4 (de) | 1994-11-29 | 2007-05-03 | Heidelberger Druckmaschinen Ag | Verfahren zur formenden Bearbeitung von Papier in einer Druckmaschine |
US5730358A (en) | 1995-12-22 | 1998-03-24 | Flow International Corporation | Tunable ultrahigh-pressure nozzle |
US5794854A (en) * | 1996-04-18 | 1998-08-18 | Jetec Company | Apparatus for generating oscillating fluid jets |
US6001219A (en) * | 1997-05-07 | 1999-12-14 | Caspar; Roman C. | Water jet edge trimming station for use in papermaking machine |
US5927329A (en) * | 1997-05-30 | 1999-07-27 | Jetec Company | Apparatus for generating a high-speed pulsed fluid jet |
US5951242A (en) * | 1998-04-16 | 1999-09-14 | Voith Sulzer Paper Technology North Amercia, Inc. | Paper machine having a high pressure fluid slitter with overflow compensation |
DE19910566A1 (de) * | 1999-03-10 | 2000-09-14 | Voith Sulzer Papiertech Patent | Verfahren zum Aufwickeln einer Materialbahn sowie Wickelmaschine zur Durchführung des Verfahrens |
DE19910569A1 (de) * | 1999-03-10 | 2000-10-12 | Voith Sulzer Papiertech Patent | Verfahren und Wickelmaschine zum Aufwickeln einer Materialbahn |
-
2000
- 2000-04-06 DE DE10017288A patent/DE10017288A1/de not_active Withdrawn
-
2001
- 2001-04-02 AT AT01929310T patent/ATE315985T1/de not_active IP Right Cessation
- 2001-04-02 JP JP2001574336A patent/JP2004506523A/ja active Pending
- 2001-04-02 EP EP01929310A patent/EP1268145B1/de not_active Expired - Lifetime
- 2001-04-02 AU AU56135/01A patent/AU5613501A/en not_active Abandoned
- 2001-04-02 US US10/239,874 patent/US6834849B2/en not_active Expired - Fee Related
- 2001-04-02 WO PCT/DE2001/001285 patent/WO2001076835A1/de active IP Right Grant
- 2001-04-02 DE DE50108752T patent/DE50108752D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0176835A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004506523A (ja) | 2004-03-04 |
ATE315985T1 (de) | 2006-02-15 |
US20030097918A1 (en) | 2003-05-29 |
WO2001076835A1 (de) | 2001-10-18 |
DE50108752D1 (de) | 2006-04-06 |
AU5613501A (en) | 2001-10-23 |
US6834849B2 (en) | 2004-12-28 |
DE10017288A1 (de) | 2001-10-31 |
EP1268145B1 (de) | 2006-01-18 |
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