CN203174433U

CN203174433U - Material web processing device

Info

Publication number: CN203174433U
Application number: CN 201220755841
Authority: CN
Inventors: B·科南; T·赫姆森; R·贝克尔斯
Original assignee: Voith Paper Patent GmbH
Current assignee: Voith Patent GmbH
Priority date: 2011-10-24
Filing date: 2012-10-24
Publication date: 2013-09-04
Anticipated expiration: 2022-10-24
Also published as: DE102011085101A1; EP2586911A1

Abstract

The utility model relates to a material web processing device. The material web processing device is especially used for a calendar (1) of paper webs or paperboard webs (2), and comprises at least one roller gap (19) formed by two rollers (5 and 18), and material webs can be guided to penetrate through the roller gap. The material web processing device is provided with a material web leaning belt (4) moving around at least two belt conveying rollers (11 and 12 and 13) in a guiding mode. The material webs can be leaned against at least one heatable roller (5) along a wrap angle larger than 5 degrees by means of the material web leaning belt. The material web leaning belt can be adjusted to a work position from a separation position by means of a movable support (23) and at least one servo motor (7), and is lifted from the heatable roller on the separation position and attached to the heatable roller on the work position. On the work position, a composite force vector generated by leaning the material web leaning belt on the heatable roller is used for determining an acting surface (29), and the servo motor and a bearing (16) are arranged on different sides of the acting surface.

Description

The web treatment facility

Technical field

The utility model relates to a kind of web treatment facility, be particularly useful for the calender of paper web or the paperboard width of cloth, mainly comprise the roll gap that at least one is made up of two rollers, web can be passed this roll gap of guiding, wherein, there is a web of guiding around at least two band delivery rolls in web treatment facility office by putting band, web can be by it along one〉5 ° angle of contact is by being placed at least one heatable roller, heatable roller two-side supporting is in frame, and wherein, web is adjusted into operating position by movable support and at least one servo motor direct or that be bearing on the bearing by connecting elements from the separation point position by putting band, web is mentioned from least one heatable roller by putting band when the separation point position, web abuts at least one heatable roller by putting band when the operating position, and wherein, when the operating position by deciding acting surface by putting band by being placed on the force vector of synthesizing that produces on the heatable roller by web.

Background technology

Accordingly, acting surface is made of the force vector sum that produces, force vector by web by putting band at any axial location, but that is on the plane of any roll shaft perpendicular to warm-up mill, produce by being placed on the heatable roller.Should be pointed out that in some cases for example at roller extremely during deflection, described plane also can be transformed to curved surface.This curved surface should be included in the utility model certainly.

In DE102009046053A1, except action plane, describe in detail by the described formal web treatment facility of calender that is of the utility model preface.Preferably have at least one here along the short contact zone of web traffic direction, so-called short roller crack or simple roll gap, and in heatable roller and the web that guarantees good heat transfer by putting the contact zone of growing between the band.In order to make the stress minimum, web is not guided and is passed through roll gap by putting band.It is relevant with the type of paper or paperboard that web is passed the current direction of these two contact zones.Term " by at least one servo motor ", can be understood as the synergy of all possible driver here, they can be by electronic, hydraulic pressure or pneumatic approach, by rotating or lifting, and the member that moves at least one band delivery roll, its support or be attached thereto.Usually all need this driver in web treatment facility both sides.Equally, frame must be interpreted as a dimeric member, and each axial end at each roller of two rack sections is separately installed with a bearing.

For example by the WO2011/000529A1 similar calender of known structure also.In this known band calender design, produce web by putting the thrust of band on heatable roller by the moving belt delivery roll.Driver is arranged on the calender outside for this reason.The power of adjusting the band delivery roll that is useful on is also imported in the pedestal.According to the size of thrust between band and the heatable roller, especially at working width when big (reaching 10 meters), the big power that generation must be born by machinery base equally.In this calender, web contacts by putting to be with to remain with heatable roller., web can not be arranged from heatable roller together with heavier band delivery roll by putting band as structure represented in WO2011/000529A1 by a kind of.

In WO2003/064761, also disclose a kind of be made of metal usually by putting band, it with web by being placed on the heatable roller.Regulation does not swing to the separation point position with band.On the contrary, pass through roll gap in undesirable mode in company with guiding by putting band.Press main control device shown in Figure 2 among the WO2003/064761, all roll gap power and band power are all imported in the pedestal.

Here should point out, by the top DE102009046053A1 that has mentioned web treatment facility as described in the preamble, here be equipped with can from heatable roller arrange by putting the calender of band, with regard to its function, satisfy all hopes, yet also be worth improving aspect the load of the power generation of passing through servo motor.Because the big weight of band delivery roll, so there is big power to import in the pedestal of web treatment facility here, this does not wish to take place yet.In this case, especially when appearring in separator, vibration can bring some troubles.And since from the bearing (rotating shaft) of separator until the long like this lever arm of some band delivery rolls, unavoidably when therefore swinging produce vibration.

Summary of the invention

Therefore to solve be that technical problem is to the utility model, designs the web treatment facility of the described type of a kind of preface, and especially calender makes it to reduce dynamic force, especially vibration.Certainly need not to consider the static force that the weight by the web treatment facility causes in this case.

Above-mentioned technical problem is by a kind of web treatment facility, the calender that is particularly useful for paper web or the paperboard width of cloth is solved, described web treatment facility mainly comprises the roll gap that at least one is made up of two rollers, web can be guided and pass this roll gap, wherein, the web treatment facility has around at least two band delivery rolls guides mobile web by putting band, web can by this web by put band along 5 ° angle of contact is by being placed at least one heatable roller, described heatable roller two-side supporting is in frame, and wherein, described web is by putting band by directly or by movable support and at least one servo motor that connecting elements is bearing on the bearing adjusting to the operating position from the separation point position, described web is mentioned from described at least one heatable roller by putting band when the separation point position, described web abuts on described at least one heatable roller by putting band when the operating position, and wherein, in the operating position by deciding acting surface by putting band by being placed on the force vector of synthesizing that produces on the described heatable roller by web, according to the utility model, described at least one servo motor and bearing are in the not homonymy of acting surface.Adopt this configuration, two the phase opposite sides of support in the contact zone that are used for the band delivery roll all import into a little effectively.Therefore support does not also tend to vibration so in the two ends stabilisation to a certain extent.Make thus pedestal and machine the ground fixture can than so far simplicity of design many.

Preferably, not only the bearing of the fixture of servo motor but also movable support or the member that is attached thereto is installed on the frame.Can between calender frame and tape cell, realize a kind of power closure of sealing in this way.When web produces thrust by putting between band and the heatable roller, observation is generally the servo motor of hydraulic cylinder, see along the web traffic direction this moment, a power is imported point (bearing) into and is in web by before putting the contact zone between band and the heatable roller, and a power is imported point (fixing point of upper hydraulic cylinder) into after this contact zone.Cause in working order thus the highly stable position of tape cell and frame, movable support or and its member of connecting and servo motor between closed power stream.Do not produce the external force that acts on the pedestal thus.

Preferably, in the every side of frame, bearing (rotating shaft) but vertically center and warm-up mill bearing center vertically, but be in basically in the plane perpendicular to the warm-up mill roll shaft.Avoid in frame with in movable support thus and can bring the moment of negative effect to the fixture in pedestal.Heatable roller is installed in the roller bearing usually.When the center of this roller bearing and the center of bearing (rotating shaft) are in the plane, and when being in frame central as far as possible exactly, even but band also can be avoided moment of flexure by putting under the bigger situation of pressure by being placed on the warm-up mill.In addition, regulation also in treatment facility, the center of band delivery roll bearing and/or the power of servo motor are imported into a little and/or the center of bearing that constitutes the roller of roll gap also is in this plane, and purpose is to guarantee that in frame non-moment ground imports the power of all roll gap power and band into.

Preferably, support is connected with at least one lever.Particularly preferably be in this respect, its bearing (rotating shaft) is in outside the band circulation.Doing the advantage of bringing like this is,, all can remove from the roller of calender with delivery roll by putting the separation process of band by web.Lever is more long, for the space that maintenance work provides can be more big.

Advantageously, make the servo motor of lever motion act on the both sides of lever bearing (rotating shaft).Although move to the separation point position from the operating position as far as possible rapidly, servo motor still can have smaller structure, and less obstruction maintenance activity thus.General here have in the frame both sides that four diameters are just enough much smaller than the hydraulic cylinder of 200mm altogether.If on a lever, always act on two servo motors, then power can be adjusted into vibration is significantly reduced.What be worth pursuit is that lever or the member that is attached thereto are provided with electronic surveying and the apparatus for evaluating for vibration.Can on purpose control servo motor for avoiding vibration according to the result then.Usefully in this respect be that all servo motors all can be along the both direction effect, that is not only can draw on lever but also can press.

Can stipulate advantageously that web can be adjusted into maintenance position by at least one servo motor by putting band with surmounting the separation point position.Therefore, be three positions of support regulation that comprise band delivery roll bearing.Here, the distance of support from this moment web abut in operating position at least one heatable roller by putting band, via making (aufgef ü hrt) when web or because web fracture occupied separation point position must implement quick separation process the time, move towards the direction guiding of maintenance position.That is to say, web can be the accessibility in the time of improving maintenance work by the distance increase of putting between band and the warm-up mill.Can advantageously can lock maintenance position in this respect.The background of this configuration is, the roller that constitutes roll gap occur can be in frame and thereby situation in the out-of-roundness of pedestal internal trigger vibration under, can quickly it more be changed than ordinary circumstance.

In this respect can be advantageously, in the maintenance position web by putting the distance that takes away heatable roller, greater than the diameter of that less in two rollers roller.Possibility is provided thus, that is, at least one or even at that of calender lower position, can be transported from calender by indoor crane upward in two rollers, thereby needn't be at the other free space that side direction is provided of calender.When roller has axial length to reach 10 meters, do like this and saved sizable space.Importantly, for example can remove the meeting that cannot not become roundly rapidly the web treatment facility is placed roller among the vibration.

Particularly preferably be, when moving to maintenance position from the separation point position, at least one servo motor can be thrown off.Dismounting for roller provides another free space thus.This is possible, because generally the motion process progress to maintenance position can compare slowly from the separation point position.Correspondingly, normally the servo motor of hydraulic cylinder does not suffer big acceleration force yet.The hydraulic cylinder of Tuo Kaiing is formed in the part supporting force of separation and maintenance position cancellation in the operating position in addition.

Advantageously, the axle of described at least two rollers is in the plane, and this plane is 10 to 90 ° with respect to angle of vertical line inclination, preferably 15 to 45 °.Under the situation of this configuration, lower rollers also can be caught axle journal and sends by indoor crane, does not damage roller this moment.In addition also bring another great advantage.If roll shaft overlapping placement perpendicular to each other, then when the roll gap load that causes with the dynamic balance of roller weight, undesirable situation may take place, that is the roll shaft load in heatable roller goes to zero.This can cause wearing and tearing and generation vibration in the bearing.Yet by the slight tilting roller bearing load that exists all the time.

Preferably, lever has a middle segregation section that is used for the band dismounting.Independently support and independently lever are established in the bearing both sides that are generally delivery roll, and they can parallel motion in separation process.Segregation section in the middle of one of lever is provided with, it can be dismantled and thereby expose a fracture in lever.In this way can be very simply web be wholely extracted out from the band delivery roll by putting to be with.

Preferably, be provided with tensioning or lax web by putting the device of band at lever or support.This device can use under these three positions at all.It guarantees that web is pressed against on the heatable roller by putting band in the operating position.In the separation point position, it prevents that web from being collided by putting band, but web by put band around warm-up mill by putting arc elongated and thereby necessary tensioning to a certain extent.And it can unclamp web by putting band at maintenance position, makes web by putting between band inner surface and the band delivery roll enough air be arranged, so that can be easily with its extraction.When changing, significantly reduces by band maintenance load thus.

Particularly preferably be, tensioning or lax web can constitute by the rotating rocking arm of motor by being installed on lever or the support by the device of putting band, and rocking arm is equipped with the bearing for the band delivery roll.Band delivery roll itself is tensioning or lax web by the part of the device of putting band thus, and needn't use other members.

Description of drawings

Describe the utility model referring to accompanying drawing in detail by embodiment.Wherein:

Fig. 1 schematically illustrates by the partial sectional view of calender of the present utility model in the operating position;

Fig. 2 schematically illustrates by the partial sectional view of calender of the present utility model in the separation point position; And

Fig. 3 schematically illustrates by the partial sectional view of calender of the present utility model at maintenance position.

The specific embodiment

By being with 4 to form around the webs of three

band delivery rolls

11,12,13 circulations by putting, it is along one basically for web calender 1 among Fig. 1〉5 ° angle of contact contacts with heatable roller 5, and contact with roller 18 with heatable roller 5 mating reactions.These two

rollers

5,18 constitute a roll gap 19, that is the short roller crack, web 2 touch roll 5 and at another side touch roll 18 in roll gap, and can pressurize jointly.Therefore heatable roller 5 is not only a roller that constitutes roll gap, and be web by put with 4 by putting roller.Web for example drives by three

band delivery rolls

11,12, one of 13 by the mode that does not have expression by putting with 4, reaches the peripheral speed of heatable roller 5 or web 2 until it.In order to make with 4 interior tightness minimums, it does not pass through roll gap 19 with web 2 guiding.In fact can to reach 10m wide by putting band for this web.In the present embodiment, web 2 be passed in web by put with 4 and heatable roller 5 between contact-making surface 3, it is by roll gap 19 then.Certainly traffic direction (arrow 28) also can be different with it.According to the type of fibrous cloth width, web by put with 4 and heatable roller 5 between contact-making surface 3 along the web traffic direction can 100 and 1000mm between.

Web 2, turns to by web delivery roll or broadening roller (Breitstreckwalzen) 6 in some place by on the path of calender 1 in the known manner at it.

Heatable roller 5 is heated to the surface temperature above 130 ℃ and the supporting that is fixed as far as possible in the mode of not expression.To be fit to guiding by the heat transport fluid of roller inside in order heating, or to use the external heat device, their inductance types, condenser type or by blow warm air work.In illustrated embodiment, provide the roll gap 19 that is constituted by roller 18 on heatable roller 5 sides, it gives calender bigger calendering gesture (Satinagepotenzial).Roller 18 can be close towards heatable roller 5 by the pressurizer 21 that is bearing on the frame 20, and roll gap 19 can place pressurized state in this way.According to the type of web, that roller 18 can have is hard, also heatable (in order to cause high both side surface smoothness in web) or flexible surface (in order to cause the even compacting of web).

All

band delivery rolls

11,12,13 are directly or by on the public lever 15 of another member supporting in support 23.These

band delivery rolls

11,12,13 diameter are in 400 to the 1500mm scopes.Be with in 4 by putting by the web between heatable roller 5 " immersion " delivery roll 11 and the delivery roll 12, make web be with 4 to stand to be with tension by putting.In contact zone 3 by putting pressure by servo motor 7, here be the support of hydraulic cylinder, servo motor 7 acts on the lever 15 and can two-way useful effect.In the operating position, not only delivery roll 11 but also delivery roll 12 have a distance from heatable roller 5, this distance greater than web by putting tape thickness and web thickness sum.

Therefore web is by putting with 4 part circumference in heatable roller 5 contact zones 3, by acting on the heatable roller 5 by putting pressure.Whole axial length along heatable roller 5 causes the synthetic force vector of determining acting surface 29.

On lever, be in the outside opposite side of band circulation at bearing (rotating shaft) 16, act on another servo motor 8, it can make

delivery roll

11,12,13 16 rotations around the shaft.That is to say that lever 15 its responsibilities on frame 20 are,

delivery roll

11,12,13 can be removed along circular arc line from heatable roller 5.Also be with 4 to mention from heatable roller 5 by putting web thus.

Import vibration in the machinery base into for fear of meeting, and for do not reach especially have motion ground by the blowing width of cloth by putting band, with the point of force application on lever, that is one side bearing 16 and servo motor 7 on the other hand, be arranged in the not homonymy of acting surface 29.

By the fixing point 30 of servo motor 7 on frame, that is the point that imports into of power, be set to accurately identically with the tie point of frame 20 with bearing 16, form power stream closed between calender frame and the tape cell.Therefore power or the part power of contact zone 3 do not send pedestal to.

Here should point out, except roller and web by putting the band, the generally dual existence of each member that on figure, can see.Observe along web traffic direction 28, in the both sides of web 2, not only organic frame 20 and roller support and lever supporting 16, and lever 15 and its support 23 and

servo motor

7,8,9 are arranged.The

servo motor

7 and 8 that is made of hydraulic cylinder at one end is bearing in respectively on the frame 20 in the present embodiment, and they act on the lever 15 at the other end (here being tailpiece of the piston rod).

It should be noted that bearing (rotating shaft) at least here but 16 center and the center of warm-up mill 5 bearings are in the plane basically, and be in the center of rack section as far as possible exactly, to avoid moment loading on frame 20, lever 15 or roller 5,18.In addition, in the web treatment facility, also stipulate, the roller 5 of roll gap 19 is imported a little and/or constituted to the center of band delivery roll bearing and/or the power of servo motor into, the center of 18 bearing also is in this plane, and purpose is to guarantee that in frame 20 non-moment ground imports the power of all roll gap power and band into.

Web is with 4 preferably to be made up of plastics by putting, for example PU, PEEK, PFD, polytetrafluoroethylene (PTFE), rubber and the mixture or the metal fabric that comprise glass fibre, aromatic polyamides.Web also can be made by the plastics with thin metal back layer by putting band.Other are used for web is metal or the metal that comprises plastic bottom layer by the material of putting with 4.Under the sort of situation, web can additionally heat by putting band in the back.For this reason can be for example heat delivery roll or induction type heating web by putting band in the mode of not expression.Preferably, web is by putting surface roughness＜1.0 μ m that band has, and is best＜0.5 μ m.Web is 0.5 to 10mm by putting the thickness that has of band, and preferred 0.8 to 5mm.

Fig. 2 represents that same calender is in the separation point position now.In this position, for example after the web fracture, lower rollers 18 is sunk several millimeters by pressurizer 21, thereby opens roll gap 19.In addition, lever 15 revolution is so far away, make web by put be with 4 at regular intervals with respect to heatable roller 5.Can know and find out that web is with 4 no longer to contact with heatable roller 5 by putting, but still by being used for tensioning or device 10 tensionings of lax web by putting band.In producing the process of separation point position,

servo motor

7 and 8 can participate in.That is to say that in the present embodiment, its hanger stretches out in a large number at the piston rod 14 that acts on that hydraulic cylinder 7 on the lever 15 above the rotating shaft 16, and its hanger is one section of piston rod 17 withdrawal that act on that hydraulic cylinder 8 on the lever 15 below the rotating shaft 16.

Tensioning or lax web are brought outstanding advantage by the device of putting with 4 10.It is used for the compensation web by put with 4 lose around heatable roller 5 arc once, make web be with the retainer belt tension by putting.Tensioning or lax web are made up of a rocking arm 22 that can be rotated to support in rocking arm swivel point 25 on the lever 15 basically by putting with 4 device 10, and it can be by servo motor 9 revolutions.For this reason, the piston rod 24 of hydraulic cylinder 9 stretches out in the present embodiment, and here, hydraulic cylinder 9 is fixed on the rocking arm, and the hanger of piston rod is fixed on the lever 15.Soon be with tension to increase in separation process or after the separation process.Hydraulic cylinder 9 positions are adjustable and/or the control of adjustable in pressure ground.In hydraulic cylinder 9, establish the terminal location damper of not representing among the figure.But except hydraulic cylinder, be suitable as the stretcher that also has valve rod, linear actuator, pneumatic linear actuator, loads by weight of servo motor 9 etc.

In order to further specify the utility model, expression is in the calender of maintenance position among Fig. 3.Now by servo motor, that is hydraulic cylinder 8 in the present embodiment, the piston rod almost all withdrawals 17 this moments with it make lever 15 from the operating position, through the separation point position, place the position of a perpendicular, that is maintenance position.The indoor crane of expression can not caught them at the axle head of not only heatable roller 5 but also roller 18 or axle journal place now and upwards transport.It is mobile by putting between being with 4 that roller 18 can pass heatable roller 5 and web, because their spacing is greater than the diameter of roller 18.Because the plane by roll shaft is about 20 ° with respect to the angle of vertical line, can not pick up lower rollers 18 with simple crane suspension ring so there is query ground, but because the axle journal of warm-up mill 5 retaining is not on the way.No longer need to dismantle needed position for side direction habitually in the past.

Preferably, lever 15 and the common center of gravity of device that is installed in above it are the turning course from the separation point position to maintenance position, with the vertical lines intersect by rotating shaft 16.Be in a stable position at the maintenance position lever thus because it can not be toward backswing, and can only (in the drawings) inclination to the right.But stop its inclination to the right by the backstop on the hydraulic cylinder 8.

Be with 4 as for being related to the dismounting web by putting, then will when maintenance position, take middle segregation section 26 away from lever 15, thus formation gap 26 '.Tensioning or lax web by put reduce again with 4 device 10 with tightness after (hydraulic cylinder 9 withdrawals), can be with 4 by gap 26 ' extraction web by putting easily and promptly.

To what the calender network operator also can have an economic benefit be in some cases, the assembly that should store for future use, that is the

band delivery roll

11,12 on

public bracket

27,13 and web be with 4 by putting.Separating this assembly can for example carry out in the rotating shaft 16 or in the zone at middle segregation section.Then can be in factory extract the web that for example will replace restfully out by putting band, and put new web by putting band, calender 1 usefulness spare package continuation production during this period.

Can be different from illustrated embodiment in many-side, not break away from basic thought of the present utility model.Especially web is with 4 the calendering effect not necessarily is provided by putting, and also can in fact improve glossiness and smoothness make web pass through roll gap 19 after or before, only be used on heatable roller 5, heating web 2 effectively.

Illustrated calender 1 all right multiple mode and multiroll calender, similar and different calender combination in addition.

Claims

1. web treatment facility, be particularly useful for the calender (1) of paper web or the paperboard width of cloth (2), comprise that mainly at least one is by two rollers (5,18) roll gap of Zu Chenging (19), web (2) can be guided and pass this roll gap, wherein, the web treatment facility has around at least two band delivery rolls (11,12,13) guide mobile web by putting band (4), web (2) can by this web by put band along 5 ° angle of contact is by being placed at least one heatable roller (5), described heatable roller (5) two-side supporting is in frame (20), and wherein, described web is by putting band (4) by directly or by movable support (23) and at least one servo motor (7) that connecting elements is bearing on the bearing (16) adjusting to the operating position from the separation point position, described web is mentioned from described at least one heatable roller (5) by putting band (4) when the separation point position, described web abuts on described at least one heatable roller (5) by putting band (4) when the operating position, and wherein, by deciding acting surface (29) by putting band (4) by being placed on the last synthetic force vector that produces of described heatable roller (5) by web, it is characterized by: described at least one servo motor (7) and bearing (16) are in the not homonymy of described acting surface (29) in the operating position.

2. according to the described web treatment facility of claim 1, it is characterized by, not only the bearing (16) of the fixture (30) of servo motor (7) but also movable support (23) or the member that is attached thereto is installed on the frame (20).

3. according to claim 1 or 2 described web treatment facilities, it is characterized by, described support (23) is connected with at least one lever (15).

4. according to the described web treatment facility of claim 3, it is characterized by, the servo motor (7,8) that described lever (15) is moved acts on the both sides of the bearing (16) of this lever (15).

5. according to the described web treatment facility of claim 1, it is characterized by, described web can be adjusted to maintenance position by at least one servo motor (8) by putting band (4) with surmounting the separation point position.

6. according to the described web treatment facility of claim 5, it is characterized by, in the described web of described maintenance position by putting band (4) from the distance of described heatable roller (5), greater than the diameter of that less in described two rollers (5,18) roller.

7. according to the described web treatment facility of one of claim 5 to 6, it is characterized by, at least one servo motor (7) can be thrown off when moving to maintenance position from the separation point position.

8. according to claim 1 or 2 described web treatment facilities, it is characterized by, the axle of described at least two rollers (5,18) is in the plane, and this plane is 10 ° to 90 ° with respect to angle of vertical line inclination.

9. according to the described web treatment facility of claim 3, it is characterized by, described lever (15) has the middle segregation section (26) for the band dismounting.

10. according to the described web treatment facility of claim 3, it is characterized by, be provided with tensioning or the lax device (10) of described web by putting band at described lever (15) or support (23).

11. according to the described web treatment facility of claim 10, it is characterized by, by being installed in can constitute by the rotating rocking arm of motor (22) on lever (15) or the support (23), this rocking arm is equipped with the bearing of band delivery roll (13) by the device (10) of putting band (4) for described tensioning or lax web.