EP1339626A1 - Saugwalze - Google Patents
SaugwalzeInfo
- Publication number
- EP1339626A1 EP1339626A1 EP01985375A EP01985375A EP1339626A1 EP 1339626 A1 EP1339626 A1 EP 1339626A1 EP 01985375 A EP01985375 A EP 01985375A EP 01985375 A EP01985375 A EP 01985375A EP 1339626 A1 EP1339626 A1 EP 1339626A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- roller
- roll
- head device
- perforation
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/12—Advancing webs by suction roller
Definitions
- the invention relates to a suction roll according to the preamble of claim 1.
- Suction rolls are used, for example, to keep a material web in contact with the associated roll jacket with the highest possible adhesive effect.
- different construction principles are known from the prior art.
- a suction roll which consists of a roll tube.
- the roller is supported by roll pins protruding on the end face, which are held by means of roller disks which are mounted in the end area of the roller tube.
- a cavity serving as a vacuum or a vacuum space is formed on the inside between the roller disks, in the area of which the perforations running in the circumferential direction are introduced in the roller shell.
- a suction head device is tightly attached, which does not rotate and which is penetrated by the roll neck in the axial direction, which rests in a bearing outside the suction head.
- the non-rotating suction head is provided with a corresponding sealing device and is provided with a corresponding suction nozzle, which can be connected to a vacuum or suction device.
- a suction roll with a stationary, non-rotating suction box in the interior of the hollow roll has become known, around which a perforated roll tube rotates.
- the length of the suction zone running in the circumferential direction is determined and fixed by the standing perforated roller tube.
- suction rollers are also known in principle, which are accommodated with axially extending suction chambers only in an outer jacket of an overall rotating roller.
- the coaxial cross channels formed suction chambers are evacuated on both sides from a roller end.
- the actual suction zone i.e. their angular position (start of suction and end of suction) is determined by front panels.
- the object of the present invention is to provide an improved suction roll.
- the present invention makes it extremely efficient, simple and very versatile for many purposes variable suction roller created.
- the suction roll is provided with a perforation only in an outer edge zone lying adjacent to the actual end face end, this edge zone being arranged outside a roll disk lying to the extreme end, over which a roll pin serving to support the roll projects axially.
- a suction and / or blow head device is then provided which interacts with the perforation.
- the suction head or a corresponding blow head are not separately kept rotating and anchored.
- compressed air can be supplied in the area in which the material web, for example, a plastic film or its edge strips is to be lifted off the roll shell, in order to support the detachment movement.
- a suction roller as part of a calender arrangement has also become known from EP 0 730 691 B1, in which the suction roller interacts with a second press roller 26 to form a nip in order, for example, to smooth tissue or toilet paper.
- the paper web to be smoothed (which is comparatively narrow) is fed to a hollow roller via a threading tube.
- the Paper is then held over the perforation formed on the roller jacket and carried along in a partial angle range with the rotating roller, to a detaching station, where the smoothed paper web is then lifted off and transported on via a second subsequent threading tube.
- the perforation is provided adjacent to its free front end in accordance with the width of the material web to be treated. Since the material web is comparatively narrow, only a comparatively narrow section of the roller is perforated. However, the roller cannot be mounted at the front end, at least not at the front end at which a suction and / or blow head provided within the hollow roller is arranged.
- the suction roller according to the invention is a roller body provided with axially projecting bearing journals, that is to say a roller arrangement in which the material web to be treated usually extends more or less from one edge region of the roller body to the opposite edge region.
- the material or plastic film web is preferably kept in good contact with the roller jacket only at the edge regions, with the generation of suction effects.
- the suction roller according to the invention makes it possible for its roller stubs to be stored outside the roller surface.
- the side bottoms or side windows are offset so far inward that a sufficiently wide edge zone is created on the outer jacket, which over these side bottoms or Extend the roller disks axially.
- the corresponding perforation can be provided in these protruding ends of the outer casing, that is to say in this edge zone, the at least one suction head then being provided in the interior of the roll and below the perforation, which makes it possible to partially to wrap around the edge of the material web around it and to keep it in good contact with the roller body.
- a blowing head can also be provided offset to a suction head in order to facilitate the lifting off of the material or plastic film web from the roll shell.
- the position of the respective suction head or blow head can be changed, that it can be adjusted, for example, in the axial direction of the roller body and / or in the circumferential direction of the roller body, in order thereby to adapt differently depending on the application and need to realize.
- FIG. 1 a schematic, partial axial section through a roller end of an invented suction roller according to the invention
- Figure 2 is a schematic end view of the embodiment of Figure 1;
- Figures 3a and 3b a modified embodiment of a suction head device in a schematic perspective view in two adjustment positions;
- Figure 4 a modified embodiment in a schematic, perspective view for a suction head device
- FIG. 5 an end view of the suction roller according to the invention with a suction and blow head device provided on the end.
- a suction roller 1 with a roller shell 3 is shown in part in a schematic axial cross-sectional illustration.
- an outer roller disk 7 Adjacent to the end face of the suction roller 1 shown, an outer roller disk 7 is axially offset inward in the exemplary embodiment shown and is further axially offset a second roller disk 9, which axially has an outwardly projecting roller pin 11 in its center, which in the The embodiment shown is stored outside the suction roller 1 in a bearing 13.
- the roller disks 7 and 9 are indirect on the inside, for example via a support tube, not shown, or directly with the roller shell 3 firmly connected, so that ultimately the roller shell 3 is rotatably mounted on the bearing and the bearing pins.
- the right-hand end of the roll end, not shown in FIG. 1, is designed symmetrically to the end of the roll on the left in FIG.
- an edge zone 17 of the roller jacket 3 protrudes beyond the roller disk 7, which is arranged to an extreme extent, with a peripheral perforation 19 being formed in the area of this edge zone 17.
- This edge zone 17 can adjoin an excessively lying, non-perforated edge section 21.
- a suction head device 25 is provided in the space 23 between the inside 3 'of the roll shell below the perforated edge zone 17 and the bearing or roll pin 11.
- the suction head device 25 is constructed in such a way that it extends in the circumferential direction over a corresponding partial circumferential length in relation to the entire circumference of the suction roll 1 and its orientation and position can be adjusted such that the effective suction opening 29 is at least in the desired area comes in which a material web 31 is guided over the rotating suction roll 1 and the edge of the material web is to be kept in defined contact with the roll shell 3 by generating negative pressure.
- the suction head 25 itself is housed in a non-rotating manner in the space 23. It is with a suction channel 33 connected, which leads to a suction device, not shown.
- the anchoring is such that the suction head device 25 can be adjusted in accordance with the arrow representation 35 about the imaginary adjustment axis 37, which comes to lie concentrically with the roller or bearing journal 11, depending on the position in which the wrap angle is to be influenced Material web 31 should be.
- FIG. 2 it is shown when the sectoral position of the suction head 25 is adjusted clockwise by a certain angular range.
- the radial boundary wall of the suction opening 29 on the right in FIG. 2 is shown in dashed lines in an adjusted position.
- sealing elements 25' can then be provided on the edge of the suction opening 29 of the suction head device 25.
- sealing elements can consist, for example, of rubber or rubber-elastic plastic, felt, carbon, possibly fiber-reinforced, rows of brushes that are as impermeable as possible, in order to seal the gap between the edge in the area of the suction opening 29 of the suction head device 25 and the inner surface 3 'of the roller shell.
- the suction head 25 can also be adjusted in the axial direction according to the arrow 36.
- the position of the film edge 31 ' can be adapted. If the film edge 31 'ends further to the right in the illustration according to FIG. 1, that is to say in an area where the perforation openings lying to the left are not covered by this plastic edge, the entire suction head could move more axially in the direction of the roller. interior are adjusted with the result that a suction effect is only generated over that part of the perforation openings in the area of the suction head, above which the material web to be fixed is actually moved.
- the suction head device 25 can be constructed in this way and have parts which are adjusted in accordance with the arrow representation 38, for example about the common imaginary adjustment axis 37 in the sense of reducing or enlarging the suction opening 29 can.
- the suction head consists of two boundary walls which are U-shaped in cross section and which can be adjusted one inside the other by reducing the suction opening 29 or pushed apart and fixed up to the maximum opening angle.
- the suction head device 25 can be enlarged or reduced in the axial direction according to the arrow representation 38, in that the suction head device is also divided into at least two parts in this embodiment and comprises two U-shaped wall elements which are in the axial direction, that is to say parallel to the suction roll 1 in accordance with the arrow representation 38, with the suction opening 29 being reduced, to be adjusted more towards one another or more apart from one another.
- Corresponding sealing elements can also be installed on the longitudinally displacing side walls 25a and 25b.
- the suction opening 29 can be enlarged or reduced in the axial direction and in each case optimally adapted to the predetermined perforation or the position of the material web to be fixed.
- FIGS. 3a, 3b and FIG. 4 can also be implemented in a combined manner, as shown, if, for example, a corresponding suction head consists of four mutually adjustable parts which can be changed in pairs in such a way that an adjustment for enlarging and reducing the suction opening 29 for example in the circumferential direction of the roller on the one hand and in the axial direction parallel to the axis of rotation of the suction roller 1.
- a blow head device 45 of the same design can be provided, which is subsequently accommodated in the spacing space 23 in the direction 47 of the moving material web 31. This can ensure that the material web 31 coming into contact with the suction zone is kept in effective system contact with the roller jacket 3 by the suction head device 25 due to the negative pressure generated, and in the area in which the moving material web or the advancing plastic film from the jacket surface the suction roll is to lift off again, this lifting movement is supported by the generation of overpressure effective through perforation.
- This suction head device can also be provided with adjusting devices of the same design, for example in order to adjust such a blow head device 45 in a different position in the circumferential direction and / or in the axial direction.
- the blow head device 45 can also be provided with a comparable construction, as explained with reference to Figures 3 or 4, with a differently adjustable blow opening 49, at least both in the axial direction and in the circumferential direction can be changed slightly.
- the blown air can be supplied via a supply nozzle 51.
- the suction roll explained is preferably carried out in a single-shell construction, a simple roll stub allowing the roll to be stored outside the roll surface.
- the outer jacket can preferably consist entirely of CFRP or light metal, in order to enable a light roller with low bending deformations and roller pins to be dimensioned small due to weight. This means that there is sufficient space for the suction and / or blow heads on the front.
- the outer jacket can also be made entirely of steel, preferably when only small suction widths are required, since the roller journals are larger due to higher weights.
- a composite construction for optimal design of the suction roll is also possible. Material combinations, for example consisting of steel, in particular normal steel with stainless steel, non-ferrous metal, CFRP and / or aluminum, are possible.
Landscapes
- Advancing Webs (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20020772U DE20020772U1 (de) | 2000-12-07 | 2000-12-07 | Saugwalze |
DE20020772U | 2000-12-07 | ||
PCT/EP2001/014358 WO2002046077A1 (de) | 2000-12-07 | 2001-12-06 | Saugwalze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1339626A1 true EP1339626A1 (de) | 2003-09-03 |
EP1339626B1 EP1339626B1 (de) | 2005-03-02 |
Family
ID=7949796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01985375A Expired - Lifetime EP1339626B1 (de) | 2000-12-07 | 2001-12-06 | Saugwalze |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1339626B1 (de) |
AU (1) | AU2002234552A1 (de) |
DE (2) | DE20020772U1 (de) |
WO (1) | WO2002046077A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3013487A (en) * | 1957-01-18 | 1961-12-19 | Time Inc | Apparatus for tension control |
DE2249275A1 (de) * | 1972-10-07 | 1974-04-18 | Bielomatik Leuze & Co | Papierzufuehrungsvorrichtung |
US4277010A (en) * | 1980-04-10 | 1981-07-07 | John Dusenbery Company, Inc. | Vacuum roller for transporting a web |
FI71371C (fi) * | 1985-04-17 | 1986-12-19 | Valmet Oy | Foerfarande foer aostadkomma undertryck i en sektor av en valssamt en sugvals |
US5241760A (en) * | 1987-02-13 | 1993-09-07 | Beloit Technologies, Inc. | Dryer apparatus |
US4974340A (en) * | 1989-10-31 | 1990-12-04 | Beloit Corporation | Vacuum guide roll apparatus |
DE3936286A1 (de) * | 1989-11-01 | 1991-05-02 | Agfa Gevaert Ag | Saugwalzenanordnung zum foerdern einer materialbahn |
FI97245C (fi) * | 1989-12-12 | 1996-11-11 | Valmet Paper Machinery Inc | Paperikoneen imutela |
DE9106451U1 (de) * | 1991-05-25 | 1991-07-11 | J.M. Voith Gmbh, 7920 Heidenheim | Hohlzylinder |
DE19654420B4 (de) * | 1996-12-24 | 2007-06-14 | Voith Patent Gmbh | Maschine zur Herstellung einer kontinuierlichen Materialbahn |
-
2000
- 2000-12-07 DE DE20020772U patent/DE20020772U1/de not_active Expired - Lifetime
-
2001
- 2001-12-06 AU AU2002234552A patent/AU2002234552A1/en not_active Abandoned
- 2001-12-06 DE DE50105490T patent/DE50105490D1/de not_active Expired - Lifetime
- 2001-12-06 WO PCT/EP2001/014358 patent/WO2002046077A1/de not_active Application Discontinuation
- 2001-12-06 EP EP01985375A patent/EP1339626B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0246077A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50105490D1 (de) | 2005-04-07 |
WO2002046077A1 (de) | 2002-06-13 |
EP1339626B1 (de) | 2005-03-02 |
AU2002234552A1 (en) | 2002-06-18 |
DE20020772U1 (de) | 2002-04-18 |
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