EP3475482A1 - Vorrichtung und verfahren zum wechseln einer bespannung einer papiermaschine - Google Patents
Vorrichtung und verfahren zum wechseln einer bespannung einer papiermaschineInfo
- Publication number
- EP3475482A1 EP3475482A1 EP17721704.9A EP17721704A EP3475482A1 EP 3475482 A1 EP3475482 A1 EP 3475482A1 EP 17721704 A EP17721704 A EP 17721704A EP 3475482 A1 EP3475482 A1 EP 3475482A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- counter
- pressure
- plate
- support
- pressure plate
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/001—Wire-changing arrangements
Definitions
- the invention relates to a device for changing an endless covering of a machine for producing, processing or processing a flat web, in particular a paper, board or tissue web, with a traversing device for preferably horizontal movement of the fabric in a direction of change of clothing comprising a pressure plate and a with this cooperating and oppositely arranged counter-pressure plate and wherein the pressure plate and / or the counter-pressure plate is associated with a lifting device for applying a flat pressure on the feasible between the pressure plate and the platen endless clothing.
- the invention also relates to methods for changing an endless covering, as well as a paper machine with a device according to the invention.
- the document WO2006 / 106178 AI discloses for this purpose consisting of two belt loops change device.
- the individual bands are each guided by two rollers, which are mounted in a respective frame.
- the bands are superposed so arranged between two vertical stanchion supports the paper machine on the leader side, that to be installed Stringing can be passed between the belt loops.
- an open towards the tape and a trained with a peripheral seal pressure chamber is provided.
- the print medium is thus in direct contact with the tapes. This allows low friction between the seal and the bands.
- the pressure chambers When changing a covering, the pressure chambers are pressurized, whereby the belts are pressed against each other and the frames are pressed apart to form an alternating gap for carrying the fabric.
- the vertical load of the vertical supports is absorbed by the frame and the pressure chambers.
- the belts are driven, whereby the fabric to be changed is continuously transported to the paper machine.
- the disadvantage is the inevitable leakage of the pressure medium, as well as the wear of the moving belts and the seal.
- the document EP2063023 A2 shows a generic changing device for a covering of a paper machine.
- the changing device is also arranged between two vertical supports of Textilmaschinenstuhlung on the leader side and allows a gradual introduction of the fabric. It comprises two, by a piston-cylinder unit against each other pressable units.
- the units are arranged displaceable in the direction of withdrawal of the fabric.
- the two parts of the framing are forced apart by additional cylinders, whereby the fabric can be placed between the units.
- the units are then pressed against each other, thereby pushing apart the two supports and disabling the additional cylinders. In this case, the gap through which the fabric can be performed, obtained. Thereafter, the units are moved in the direction of withdrawal together with the clothing.
- the invention has for its object an improved changing device and an improved method for changing an endless covering a machine for the production, processing or processing of a sheet-like web, in particular a paper, board or tissue web, to propose, thereby also the disadvantages of the known devices and Procedure can be avoided.
- the object is solved by the claim 1.
- a first support device is provided on the first side of the shuttle and a second support device is provided on the second side, and each support device comprises a support plate and a counter-support plate cooperating therewith and arranged opposite thereto, and the support plate and / or the counter-support plate is associated with a further lifting device for applying a flat pressure on the endless covering, which can be guided between the support plate and the counter-support plate.
- This change device can be used advantageously between two vertical, one above the other arranged supports the paper machine chair.
- the supports can be assigned to the pressure plate and the counter-pressure plate of the positioning device substantially centrally, while the support means are arranged on both sides, that is, on the first and the second side of the shuttle.
- the changing device thus offers a large, freely dimensionable pressing surfaces between which the fabric is pressed gently and without risk of damage. This is particularly important at the beginning and at the end of the pulling process of the clothing, when the pressure plate and the Counterpressure plate, or the support plates and the counter support plates, are no longer covered by the fabric over the entire surface.
- the support means are arranged on both sides of the traversing device, so that preferably a symmetrical arrangement can be achieved with respect to the vertical supports.
- the device offers the possibility to move the fabric alternately through the shuttle and the support means in the machine, i. to transport.
- This process may, for example, proceed as follows: For example, while the clothing between the pressure plate and the counter-pressure plate of the shuttle is clamped by activation of the lifting device and moved from a starting position in the direction of change of clothing, the support means in the pressureless, i. relieved state moves against the direction of the string reversal. Subsequently, the support plates and the counter-support plates of the first and second support means are pressed by activation of the further lifting device against each other and relieved the displacement and returned to the starting position. At the same time, the first and the second support means are moved together with the clothing in the direction of change of the clothing. The covering is thus moved in this optional sequence at each stroke of the shuttle into the machine. An idle stroke, as occurs in the device according to document EP2063023 A2, can be avoided. The changeover time of the clothing is thereby considerably shortened.
- the pressing surface for forming the planar pressure of the displacement device is substantially the same size as the sum of the pressing surfaces of the first and the second supporting device.
- the displacement devices comprise guides, preferably linear guides, wherein the pressure plate and the counter-pressure plate are mounted on the respective guide, displaceable in the direction of change of the fabric.
- guides from the following group are selected: ball guides, roller guides, hydrostatic guides, sliding guides. to Limiting the movement forces, these particularly low-friction bearings can be used.
- the traversing device is associated with a drive for shifting it in the direction of change of the clothing direction and back.
- the drive may be assigned to the pressure plate and / or the counter-pressure plate.
- the drive can be selected from the group of electric drive, hydraulic drive, pneumatic drive, mechanical drive or other suitable drives.
- the drive can comprise chains, ropes, toothed belts or levers.
- the pressure plate and / or the counter-pressure plate on the side of the applied surface pressure has a, preferably soft, coating or support. This serves to exercise a gentle surface pressure.
- a planar, fluid-fillable cushion is arranged between the pressure plate and the counter-pressure plate. The cushion serves to protect the clothing by equalizing pressure peaks in the nip.
- the lifting device of the displacement device comprises a flat, fluid-fillable cushion, which is arranged on the side of the applied surface pressure of the pressure plate and / or the counter-pressure plate.
- the cushion can be filled with fluid, preferably with air or water or oil, and be designed such that a lifting movement of at least 8 mm, preferably at least 10 mm, in particular at least 15 mm, can be generated. This type of lifting device allows a low height.
- the inflatable cushion can be filled volumetrically controlled by a positive displacement pump, for example a piston pump.
- the filling volume can be specified via the number of piston strokes and the stroke volume of the positive displacement pump. This will set the stroke of the pillow. This type of filling avoids the risk of overfilling or even bursting of the pillow.
- the pressure plate and the counter-pressure plate in two parts. Between the respective pressure plate part and the respective counter-pressure plate part can each act as a lifting device, with fluid be arranged fillable cushion. This provides additional security in the event that a cushion fails, for example, by bursting, which can damage the paper machine's stiffening. Further, it is possible if the support plate and / or the counter-support plate of the respective support means on the side of the applied surface pressure has a, preferably soft, coating or support. This also serves the exercise of a gentle surface pressure. It is also advantageous if between the support plate and the counter-support plate, a flat, fluid-beheUbare cushion is arranged. The cushions can be designed according to the cushion (s) of the displacement device.
- the further lifting device comprises a flat, fluid-foamable cushion which is arranged on the side of the applied flat pressure of the support plate and / or the counter support plate.
- the cushions can be designed and operated according to the cushion (s) of the shuttle.
- the first and the second support means each comprise a guide, preferably a linear guide, and wherein the support plates and the counter support plates of the first and the second support means can be slidably mounted on the guide in the direction of change of clothing.
- the guides from the following group are selected: ball guides, roller guides, hydrostatic guides, sliding guides. To limit the movement forces particularly low-friction bearings can be used.
- the first and the second support means are preferably each assigned a drive for their displacement in the direction of change of the clothing.
- the drive can be selected from the group of electric drive, hydraulic drive, pneumatic drive, mechanical drive or other suitable drives.
- the drive can comprise chains, ropes, toothed belts or levers.
- the drive for the first and the second support means may be carried out so that the first and the second support means are synchronously movable.
- the drive of the support means is designed so that it is movable independently of the traversing device.
- the drive of the support means is performed mechanically and coupled to the shuttle so that the direction of movement of the support means is opposite to the direction of movement of the shuttle.
- the drive of the support means is designed and coupled to the traversing device so that the movement of the support means takes place at the same time as the movement of the traversing device.
- the drive of the support means is coupled via a control unit or control unit to the drive of the shuttle so that the direction of movement and the time course of the movement of the support means relative to the direction of movement and the time course of movement of the shuttle can be predetermined.
- the traversing device and the first and the second support means are arranged between a common upper base plate and a common lower base plate. They preferably form a structural unit.
- This assembly can be designed so that it can be installed in the stiffening of the machine, that is between two vertically stacked supports for changing the clothing. During operation of the machine, the assembly is replaceable by intermediate pieces for receiving the load of the supports.
- the assembly may also be integrated into the machine chair.
- the assembly is then designed so that during operation of the machine, the lifting device and the other lifting devices can be deactivated and the distance of the upper base plate and the lower base plate is fixable so that transmitted through the two vertically superposed columns forces can be safely absorbed ,
- the fixation can be achieved by installable spacers.
- the first and the second support means may be arranged stationarily in the direction of change of the clothing. In this case, the clothing is transported exclusively by the traversing device into the machine. The symmetrical structure is retained, whereby a tilting moment of the supports is avoided.
- the object is also achieved by a method according to claim 11 for changing an endless covering of a machine for producing, processing or processing a flat web, in particular a paper, board or tissue web, with at least one device according to claim 1.
- the method comprises the following Steps: a. Applying a surface pressure between the support plate and the
- the object is also achieved by a further method according to claim 12 for changing an endless covering of a machine for producing, processing or processing a flat web, in particular a paper, board or tissue web, with at least one device according to claim 1.
- This method distinguishes itself from the method according to claim 11, characterized in that at the beginning of the change process, the support means is brought into the starting position.
- the method comprises the following steps: a. Applying a surface pressure between the pressure plate (3.1) and the counter-pressure plate (3.2) of the displacement device (3) by means of the lifting device, wherein a gap between the support plate and the counter-support plate of the support device is generated; b. Positioning the traversing device (3) in an end position in
- the first and the second support means are moved, preferably simultaneously, in opposite directions to the movement direction of the travel device.
- the object also relates to a paper machine for the production, processing or processing of a flat web, in particular a paper, board or tissue web, with the sections Formierpartie, press section, dryer section and optionally with a calender section, said sections having vertically extending supports.
- the paper machine is designed so that a device according to claims 1 to 10 can be installed or installed in at least one of the sections forming section, press section, drying section, calender for changing a covering.
- Another aspect of the invention relates to a cushion for use as a lifting device in a device according to claim 1.
- the cushion according to the invention with fluid, preferably with air or water or oil, filled and designed such that a stroke of at least 8 mm, preferably at least 10 mm, in particular at least 15 mm, can be generated.
- the cushion is dimensioned so that the male load of the respective supports can be accommodated.
- FIG. 1 shows a mounting situation of the device according to the invention in a
- Figure 3 shows the lower part of a first embodiment of the invention
- FIG. 4 shows a first embodiment of the device according to the invention in FIG.
- FIG. 5 shows a first embodiment of the device according to the invention in FIG
- Figure 6 shows the Einziehspalt a first embodiment of the invention
- the paper machine frame comprises a plurality of vertical and horizontal supports and supports for receiving the components of the paper machine, such as rollers, tensioning devices, dewatering devices, etc.
- vertical supports 15 are provided, which are supported on a foundation rail 14.
- the driver's side FS also vertically extending and superposed supports 16, 16.1, 16.2 are arranged and mounted on foundation rails. Between the supports 16, 16.1 and 16.1 and 16.2 is in each case a device 1 for changing the fabric 11 is provided with an upper and a lower part, between which the fabric 11 is performed.
- FIGS. 2 to 5 only one embodiment of the device 1 according to the invention is shown.
- the first support means 4 and the second support means 5 are slidably mounted on guides 6.
- these support means 4, 5 also stationary, that is not displaceable, be arranged in start position or in the end position.
- the drives 8 can be omitted for this embodiment, not shown.
- FIG. 2 shows the lower part of a first embodiment of the device according to the invention in a three-dimensional representation.
- the lower part of the traversing device 3 for moving the clothing 11 horizontally in a direction of change of clothing 2 is arranged in the starting position in the clothing direction 2 in front of the support plate 4.1 of the first support device 4 and the support plate 5.1 of the second support device 5.
- the lower part of the traversing device 3 comprises a pressure plate 3.1.
- the pressure plate 3.1 is designed as a fillable cushion lifting device 3.3 for applying a surface pressure on the between the pressure plate 3.1 and the platen 3.2 routable endless fabric 11 assigned.
- a first support 4 is provided on the first side of the shuttle 3, and a second support 5 on the second side.
- each support means 4 5 only the support plate 4.1, 5.1 is shown.
- the counter-support plate 4.2, 5.2 which cooperates with these and which are arranged opposite thereto are shown in FIGS. 4 and 5.
- Each supporting plate 4.1 is a further lifting device 4.3, 5.3, likewise designed as a fillable cushion, for applying a flat pressure to the space between the supporting plate 4.1, 5.1 and the counter support plate 4.2, 5.2.
- the cushion serves to protect the clothing by equalizing pressure peaks in the nip.
- the inflatable cushion is filled volumetrically controlled by a positive displacement pump, not shown, for example a piston pump.
- the filling volume will be specified by the number of piston strokes and the stroke volume of the positive displacement pump. This will set the stroke of the pillow.
- the cushion is designed so that a lifting movement of at least 10 mm can be generated.
- This type of lifting device allows a low overall height of the device 1.
- the pressure plate 3.1 of the shuttle 3 has a drive 7, which is exemplified as an electric motor.
- Both support plates 4.1, 5.1 are also each assigned a drive 8.
- These drives 8 are exemplified mechanically designed as chain drives.
- the chains are each connected at one end to the respective support plate 4.1, 5.1 of the corresponding support means 4, 5 and coupled to the other end with the pressure plate 3.1 of the shuttle 3 and arranged such that the support plates 4.1 and
- the drive 7,8 from the group electric drive, hydraulic drive, pneumatic drive, mechanical drive or other suitable drives, be selected.
- the drive 7,8 may include chains, ropes, timing belt or lever.
- the drives 8 of the support plates 4.1, 5.1 of the support means 4, 5 can also be designed so that it is independent of the pressure plate 3.1 of the shuttle 3 movable.
- the support plates 4.1, 5.1 and the pressure plate 3.1 are mounted on linear guides 6 displaceable in the direction of change of the clothing 2. To limit the movement forces particularly low-friction bearings are used.
- the guides 6 are selected from the following group: ball guides, roller guides, hydrostatic guides, sliding guides.
- FIG. 3 shows the lower part of a first embodiment of the device according to the invention in a three-dimensional representation after a step when pulling a fabric 11.
- the pressure plate was 3.1 of the shuttle 3 in the direction of change of clothing 2 from the start position to the end position emotional.
- the two support plates 4.1, 5.1 were moved via the drive 8 in the opposite direction from the end position to the start position.
- the lower part of the traversing device 3, the pressure plate 3.1, for moving the clothing 11 horizontally in a direction of change of clothing 2 is thus arranged in the end position in the clothing direction 2 after the support plate 4.1 of the first support means 4 and the support plate 5.1 of the second support means 5.
- FIG. 4 shows a first embodiment of the device 1 according to the invention in a three-dimensional representation without intermediate pieces.
- the device comprises a lower part, as shown in Figure 2 and in Figure 3 and an upper part of the device 1 according to the invention, wherein the upper part corresponding to the lower part of a counter-pressure plate 3.2 of the shuttle 3 and in each case a counter support plate 4.2,
- the construction essentially corresponds to the lower part of the device 1 shown in FIGS. 2 and 3 and described above. This applies to at least the guides 6 and optionally the drives 7, 8.
- the counter-pressure plate 3 associated with the displacement device 3 for this case Drive 7 of the upper part can be in operative connection with the pressure plate 3.1 of the displacement device 3 associated drive 7 of the lower part.
- the drive powers of the upper drive and the lower drive can be matched to one another.
- the counter-pressure plate 3.2 is assigned to run as an electric motor drive 7 and the pressure plate 3.1 of the shuttle 3 is assigned no drive.
- the pressure plate 3.1 is driven via the contact with the counter-pressure plate 3.2 and in the unpressurized state via the drives designed as a chain drive 8.
- the upper part and the lower part of the device 1 comprises an upper base plate 10 and a lower base plate 9, respectively. Together with the two support devices 4, 5 and the displacement device 3, they form a structural unit. This unit is designed so that it can be installed in the stiffening of the machine, that is between two vertically superposed supports 16, 16.1, 16.2 for changing the clothing.
- the situation shown in Figure 4 shows the state of the device 1 for pulling the cover 11.
- FIG. 5 shows the state of the device 1 when it remains installed in the machine, that is, during operation of the machine in the Machine chair is integrated.
- spacers 12 are provided, which connect the two base plates 9, 10.
- the intermediate pieces 12 are designed for receiving the supporting loads of the supports 16, 16.1, 16.2. For positioning of the device 1 in the frame centering pieces 13 are provided.
- FIG. 6 shows the Einziehspalt as an example in the traversing device 3 of the first embodiment of the device 1 according to the invention in a simplified representation at the end of pulling a fabric 11.
- the pressure plate and the counter-pressure plate are no longer covered over the entire surface.
- the resulting very high surface pressure of the fabric 11 is avoided by the designed as a fluid-filled cushion lifting device 3.3 characterized in that the pillow outside the range of the fabric 11, the pressure plate 3.1 and the counter-pressure plate 3.2 is supported.
Landscapes
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016211360.7A DE102016211360A1 (de) | 2016-06-24 | 2016-06-24 | Vorrichtung und Verfahren zum Wechseln einer Bespannung einer Papiermaschine |
| PCT/EP2017/060875 WO2017220243A1 (de) | 2016-06-24 | 2017-05-08 | Vorrichtung und verfahren zum wechseln einer bespannung einer papiermaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3475482A1 true EP3475482A1 (de) | 2019-05-01 |
| EP3475482B1 EP3475482B1 (de) | 2020-01-29 |
Family
ID=58671695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17721704.9A Active EP3475482B1 (de) | 2016-06-24 | 2017-05-08 | Vorrichtung und verfahren zum wechseln einer bespannung einer papiermaschine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3475482B1 (de) |
| CN (1) | CN108884636B (de) |
| DE (1) | DE102016211360A1 (de) |
| WO (1) | WO2017220243A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019120924A1 (de) * | 2019-08-02 | 2020-11-05 | Voith Patent Gmbh | Maschine und Verfahren zum Wechseln einer Bespannung in einer Papiermaschine |
| AT526229B1 (de) * | 2023-05-05 | 2024-01-15 | Andritz Ag Maschf | Maschine und verfahren zur herstellung einer faserstoffbahn |
| FI131043B1 (en) * | 2023-06-07 | 2024-08-14 | Valmet Technologies Oy | Frame for a fabric feeding unit in a fiber web machine and fabric feeding unit for a fiber web machine |
| DE102024121625A1 (de) * | 2024-07-30 | 2025-08-21 | Voith Patent Gmbh | Siebpartie einer Maschine zur Herstellung einer Faserstoffbahn und Verfahren zum Einziehen eines Siebes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI117397B (fi) | 2005-04-05 | 2006-09-29 | Metso Paper Inc | Menetelmä ja laite kudoksen vaihtamiseksi paperi- tai kartonkikoneessa |
| DE102006001050A1 (de) | 2006-01-07 | 2007-07-12 | Voith Patent Gmbh | Wechselvorrichtung |
| FI119599B (fi) * | 2007-04-20 | 2009-01-15 | Metso Paper Inc | Järjestelmä kudoksen/hihnan vaihtamiseksi rainanmuodostuskoneella, kudoksen/hihnan vaihtamiseksi rainanmuodostuskoneella käytettävä nostin ja menetelmä rainanmuodostuskoneessa olevan kudoksen/hihnan vaihtamiseksi |
| DE102007047859A1 (de) | 2007-11-26 | 2009-05-28 | Voith Patent Gmbh | Vorrichtung zum Wechseln einer Bespannung einer Papiermaschine |
| EP2496763B1 (de) * | 2009-11-06 | 2014-01-08 | Metso Paper, Inc. | Vorrichtung für den einsatz oder die entfernung einer bespannung bei einer industriemaschine |
-
2016
- 2016-06-24 DE DE102016211360.7A patent/DE102016211360A1/de not_active Withdrawn
-
2017
- 2017-05-08 WO PCT/EP2017/060875 patent/WO2017220243A1/de not_active Ceased
- 2017-05-08 CN CN201780020437.3A patent/CN108884636B/zh not_active Expired - Fee Related
- 2017-05-08 EP EP17721704.9A patent/EP3475482B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017220243A1 (de) | 2017-12-28 |
| CN108884636B (zh) | 2020-04-07 |
| CN108884636A (zh) | 2018-11-23 |
| EP3475482B1 (de) | 2020-01-29 |
| DE102016211360A1 (de) | 2017-12-28 |
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