EP1399378A1 - Wendestangen - Google Patents
WendestangenInfo
- Publication number
- EP1399378A1 EP1399378A1 EP02745148A EP02745148A EP1399378A1 EP 1399378 A1 EP1399378 A1 EP 1399378A1 EP 02745148 A EP02745148 A EP 02745148A EP 02745148 A EP02745148 A EP 02745148A EP 1399378 A1 EP1399378 A1 EP 1399378A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure
- turning bar
- valve body
- fluid outlet
- 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
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/32—Arrangements for turning or reversing 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
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/14—Means using fluid made only for exhausting gaseous medium with selectively operated air supply openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/40—Fluid power drive; Fluid supply elements
- B65H2406/41—Valves
- B65H2406/413—Seat valves
Definitions
- the invention relates to turning bars according to the preamble of claims 1, 4 or 5.
- Such turning bars come for. B. used to deflect individual webs obtained by longitudinal cutting of a printed paper web by 90 ° in order to lay them one above the other and in this way to be able to feed a folding device.
- z. B. has been proposed in DE 43 11 438 C2, on a pivotable turning bar, which can assume two working positions pivoted by 90 ° relative to one another, in which it deflects a material web in opposite directions in each case, to arrange a hollow cylinder displaceably in the interior of the turning bar, depending on the situation , in which of the two working positions the turning bar is in one of two positions, with bores of the inner cylinder each having holes in one of these positions Align a first half of the circumference of the turning bar while the holes on the opposite second circumferential half are blocked, and in the other position align holes in the inner cylinder with holes in the second circumferential half while those of the first circumferential half are blocked.
- DE 196 37674 A1 discloses a turning bar, the air outlet openings of which can be closed by means of a valve.
- the valve is actuated by covering the openings with the web (dynamic pressure principle).
- the invention has for its object to provide turning bars that are easy to manufacture.
- the fluid outlet is covered by a material web that wraps around the turning bar and prevents the air flow from flowing away from the fluid outlet, an overpressure builds up at the fluid outlet, which acts on the first surface of the valve body.
- the pressure building up at the fluid outlet causes the valve body to be shifted into the second position and thus an opening of the main fluid passage. This results in a strong air flow through the valve, which is sufficient to build up an air cushion between the turning bar and the material web, but at the same time the material web continues to hinder the outflow of the now increased air flow, so that in the Overpressure remains in the area of the fluid outlet, which keeps the valve open.
- the permeability of the valve therefore depends on whether its fluid outlet is covered by an obstacle or not. No contact between the valve and the obstacle is required to detect the presence of this obstacle; the material web, which constitutes such an obstacle, can thus be turned completely contactlessly on a turning bar which is equipped with such valves.
- the valve works on the dynamic pressure principle.
- the housing and the valve body enclose a chamber which is opposite the first surface of the valve body and which is exposed to the pressure at the fluid outlet and which can be kept at a lower pressure than the pressure of the compressed air inside the turning bar which is present at the control fluid inlet.
- a chamber which is opposite the first surface of the valve body and which is exposed to the pressure at the fluid outlet and which can be kept at a lower pressure than the pressure of the compressed air inside the turning bar which is present at the control fluid inlet.
- the housing and the valve body enclose the chamber in an airtight manner, so that an amount of air originally enclosed therein, e.g. B. can correspond to atmospheric pressure when the valve is closed, is permanently maintained.
- the chamber communicates with the surroundings of the valve via a pressure equalization passage. This enables one Avoiding pressure increase in the chamber, which would result in a hermetically closed chamber when the valve is opened, and thus facilitates wide opening of the valve.
- the pressure compensation line can be led out of the jacket of the turning bar at a point which is diametrically opposite the hole of the jacket, the air flow of which controls the valve. Since a material web touches at most half of the circumference of a turning bar, this ensures that each valve, which is arranged on a hole of the jacket which is covered by the material web, has a pressure compensation passage which is not covered by the web.
- Figure 1 is an axial section through a valve installed in a jacket opening of a turning bar according to the invention.
- FIG. 2 shows an axial section through a second embodiment of the valve in a plane rotated by 90 ° relative to the plane of FIG. 1; 3 shows an axial section similar to that of FIG. 1 through a valve according to a third embodiment of the invention;
- Fig. 4 shows a cross section through a turning bar equipped with valves according to FIG. 3.
- FIG. 1 shows a valve 03 embedded in an opening 02 in the jacket 01 of a turning bar according to a first embodiment of the invention.
- the valve 03 has an essentially cylindrical housing 04, with two main fluid inlets 06 formed diametrically opposite in the cylinder jacket and a fluid outlet 07 on one end of the cylinder.
- the housing 04 is inserted into the opening 02 from the outside and there z. B. attached by gluing, a brim 08 surrounding the end face together with a complementary shoulder at the opening 02 forming a stop for the positioning of the housing 04.
- a valve body 09 is in a longitudinal bore of the housing 04 by a spring 16, for. B. a coil spring 16 pressed against a locking ring 12.
- the locking ring 12 can also have the function of a valve seat for the valve body 09, which prevents a compressed air flow from the main fluid inlets 06 to the fluid outlet 07 in the closed state of the valve 03.
- a sufficient sealing effect for the purposes of the valve 03 can, however, already be achieved in that the diameter of the valve body 09 corresponds to that of the longitudinal bore in which it is accommodated with a small tolerance.
- the valve body 09 is exposed to the pressure at the fluid outlet 07 on a surface 13 lying at the top in FIG. 1; a surface of the valve body 09 lying opposite the surface 13, together with the housing 04, delimits a chamber 14 at the end of the housing 04 facing away from the fluid outlet 07 holds down.
- a nozzle 17 molded onto the valve body 09 extends through the chamber 14 and through a bore in the housing 04. The end of the nozzle 17 forms the control fluid inlet 18 of a control fluid line 19 which extends through the valve body 09.
- the chamber 14 is hermetically sealed in this embodiment.
- the free cross section of the Control fluid line 19 may e.g. B. 1 mm, with a diameter of the surface 13 of 3 mm and a wall thickness of the nozzle 17 of a few tenths of a mm.
- FIG. 2 shows a section through a recessed in the jacket 01 of a turning bar Valve 03 according to a second embodiment of the invention.
- a section through this valve 03 in a plane perpendicular to the plane of FIG. 2 is identical to FIG. 1.
- the same elements of the valves 03 according to the first and second embodiment are identified by the same reference numerals.
- the chamber 14 is not necessarily hermetically sealed. It communicates with the surroundings of the valve 03 via a pressure compensation line 22, this pressure compensation line 22 extending through the housing 04 and opening next to the fluid outlet 07 on the outer surface of the turning bar. If the fluid outlet 07 is covered by a material web 21, in most cases the mouth of the pressure compensation line 22 is also covered. In practice, however, this does not have a disruptive effect. Since the leakage rate of air, e.g. B.
- valve 03 opens and a strong air flow flows through it, a part of it also sweeps over the mouth of the pressure compensation line 22. This flow brings about an additional lowering of the pressure in the pressure compensation line 22 by jet pump effect, which additionally opens the valve 03 promotes.
- FIG. 3 shows a section analogous to that of FIG. 1 through a third embodiment of a valve 03 according to the present invention.
- elements of the valve 03 which correspond to those of the first or second embodiment are denoted by the same reference numerals.
- the nozzle 17 on the valve body 09 is omitted, instead a radial bore 24 in the housing 04 serves as a control fluid line 19.
- the housing 04 is extended on its end face facing away from the fluid outlet 07 by a tube 26 through which a pressure compensation line 22 extends extends for chamber 14.
- an intended leak between the main fluid inlet 06 and the fluid outlet 07 can serve as the control fluid line 19, e.g. B. in the form of a groove in the inner wall of the longitudinal bore or the outer surface 21 of the valve body 09 or in the form of a game between the inner wall of the longitudinal bore and the outer surface of the valve body 09.
- FIG. 4 shows a cross-section (not to scale) of a turning bar which is equipped with valves 03 according to FIG. 3.
- the tube 26 of these valves 03 extends essentially centrally through the turning bar and opens at the jacket 01 thereof at a location 27 which is diametrically opposite the opening 02 equipped with the valve 03. Since a material web 21 to be deflected on the turning bar can never cover more than half of its circumference, the mouths of the pressure compensation line 22 of the valves 03 covered by a material web 21 are always free in this arrangement, so that atmospheric pressure prevails in the chamber 14. LIST OF REFERENCE NUMBERS
Landscapes
- Multiple-Way Valves (AREA)
- Mechanically-Actuated Valves (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10131271 | 2001-06-28 | ||
| DE10131271A DE10131271B4 (de) | 2001-06-28 | 2001-06-28 | Wendestangen |
| PCT/DE2002/002200 WO2003002441A1 (de) | 2001-06-28 | 2002-06-17 | Wendestangen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1399378A1 true EP1399378A1 (de) | 2004-03-24 |
| EP1399378B1 EP1399378B1 (de) | 2007-01-24 |
Family
ID=7689827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02745148A Expired - Lifetime EP1399378B1 (de) | 2001-06-28 | 2002-06-17 | Wendestangen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1399378B1 (de) |
| AT (1) | ATE352505T1 (de) |
| DE (2) | DE10131271B4 (de) |
| WO (1) | WO2003002441A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215472C2 (de) * | 1982-04-24 | 1984-02-23 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Luftumspülte Wendestange |
| DE4311438C2 (de) * | 1993-04-07 | 1997-06-19 | Koenig & Bauer Albert Ag | Wendestange für eine Materialbahn |
| FR2740070B1 (fr) * | 1995-10-24 | 1998-01-09 | Heidelberg Harris Sa | Systeme de barre de retournement a pression differentielle |
| DE10044070A1 (de) * | 1999-10-01 | 2001-04-26 | Heidelberger Druckmasch Ag | Vorrichtung zum wahlweisen Verschließen von Blasöffnungen in Bedruckstoff führenden Leiteinrichtungen oder Stangen von Rotationsdruckmaschinen |
-
2001
- 2001-06-28 DE DE10131271A patent/DE10131271B4/de not_active Expired - Fee Related
-
2002
- 2002-06-17 DE DE50209358T patent/DE50209358D1/de not_active Withdrawn - After Issue
- 2002-06-17 EP EP02745148A patent/EP1399378B1/de not_active Expired - Lifetime
- 2002-06-17 WO PCT/DE2002/002200 patent/WO2003002441A1/de not_active Ceased
- 2002-06-17 AT AT02745148T patent/ATE352505T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03002441A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003002441A1 (de) | 2003-01-09 |
| EP1399378B1 (de) | 2007-01-24 |
| DE10131271A1 (de) | 2003-01-16 |
| DE50209358D1 (de) | 2007-03-15 |
| DE10131271B4 (de) | 2006-06-22 |
| ATE352505T1 (de) | 2007-02-15 |
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