U.S. patent application number 10/542074 was filed with the patent office on 2006-08-17 for composite-construction treatment equipment.
Invention is credited to Ilkka Rata.
Application Number | 20060180291 10/542074 |
Document ID | / |
Family ID | 8566344 |
Filed Date | 2006-08-17 |
United States Patent
Application |
20060180291 |
Kind Code |
A1 |
Rata; Ilkka |
August 17, 2006 |
Composite-construction treatment equipment
Abstract
A composite-construction treatment equipment has a frame (12)
with a connected blade holder (15) made of a composite material.
The blade holder (15) has a blade (16) and a separate backing blade
(18). The blade holder (15) is removably adapted to the frame (12)
using a pair of form-locking counter clamps (19). The form-lock is
arranged tight in the lateral direction of the blade (16) and
essentially free in the axial direction of the blade (16).
Inventors: |
Rata; Ilkka; (Jyvaskyla,
FI) |
Correspondence
Address: |
STIENNON & STIENNON
612 W. MAIN ST., SUITE 201
P.O. BOX 1667
MADISON
WI
53701-1667
US
|
Family ID: |
8566344 |
Appl. No.: |
10/542074 |
Filed: |
January 27, 2004 |
PCT Filed: |
January 27, 2004 |
PCT NO: |
PCT/FI04/50006 |
371 Date: |
July 13, 2005 |
Current U.S.
Class: |
162/281 ;
118/414; 15/256.51 |
Current CPC
Class: |
D21G 3/005 20130101;
B05C 11/041 20130101; D21H 25/10 20130101 |
Class at
Publication: |
162/281 ;
015/256.51; 118/414 |
International
Class: |
D21G 3/04 20060101
D21G003/04; D21H 23/34 20060101 D21H023/34 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 30, 2003 |
FI |
20035010 |
Claims
1-11. (canceled)
12. Equipment in a papermaking machine including a blade holder
comprising: a surface mounted for motion; a frame arranged in the
vicinity of the said surface, and mounted for motion; a blade
holder formed of a composite material and forming an essentially
integral component, which is removably connected to the frame with
a pair of form-lockable counter clamps; a blade, adapted to the
blade holder, including an edge extending in a longitudinal blade
direction, the edge arranged to be placed in contact with the
surface mounted for motion, by a movement of the blade holder;
wherein the pair of form-lockable counter clamps are arranged to
prevent moment in a lateral direction, defined by the blade and
transverse to the longitudinal blade direction; wherein the pair of
form-lockable counter clamps are arranged to provide essentially
free motion in the longitudinal direction of the blade; and a
separate backing blade mounted to the blade holder by a first end,
set to or attached to the blade holder, and the backing blade
having a second end which extends closer to the edge than the blade
holder.
13. The apparatus of claim 12 wherein a first counter clamp of the
pair of counter clamps is a profiled shoulder, which is covered on
an opposite side by a second counter clamp.
14. The apparatus of claim 12, wherein the blade holder has a front
part and a rear part and extends in the lateral direction
therebetween, and a first counter clamp of the pair of counter
clamps is arranged in the rear part parallel to the blade holder,
and wherein the blade is attached to the front part of the blade
holder.
15. The apparatus of claim 12 wherein the pair of counter clamps
comprises a first counter clamp and a second counter clamp, and
wherein one of the first counter clamp and the second counter clamp
forms part of an adapter component which is connected to the
frame.
16. The apparatus of claim 12, wherein one of the counter clamps
forming the pair of counter clamps is mounted to the frame.
17. The apparatus of claim 12, wherein the pair of counter clamps
is arranged as a mutually functional articulation, so that an angle
between the counter clamps can be varied while the pair of
form-lockable counter clamps prevents movement in a lateral
direction.
18. The apparatus of claim 15, wherein the pair of counter clamps
is arranged as a mutually functional articulation, so that an angle
between the counter clamps can be varied while the pair of
form-lockable counter clamps prevents moment in a lateral
direction, and further comprising loading elements between the
adapter component and the blade holder.
19. The apparatus of claim 18, wherein either or both of the
counter clamps of the pair of counter clamps have at least one
provision for a loading element.
20. The apparatus of claim 18, wherein the loading elements are
formed of loading hoses or springs.
21. The apparatus of claim 12, wherein the backing blade has a
first end with a form-locking detent, connecting the backing blade
removably to the blade holder.
22. The apparatus of claim 21, wherein the blade holder has at
least two fastening points for the form-locking detent for
adjusting the position of the backing blade in the lateral
direction.
23. A blade holder for a papermaking machine, comprising: a single
integral longitudinally extending component which is a composite
material pultrusion, the component having a front portion and a
rear portion and extending in a lateral direction therebetween, the
lateral direction being transverse to a longitudinal direction
defined by the longitudinally extending component, the rear portion
forming a longitudinally extending shoulder arranged to form one
part of a pair of form-lockable counter clamps; wherein the
longitudinally extending shoulder has portions which cooperate in
forming a pair of form-lockable counter clamps to prevent movement
in a lateral direction, and to provide essentially free motion in
the longitudinal direction; and wherein the front part of the
component forms a clamp defining a gap for receiving a doctor
blade, and a portion of the front part defines at least one
fastening point for a backing blade, the fastening point forming a
longitudinally extending groove which has a larger portion for
receiving a form-locking detent and a first smaller portion
extending in a direction overlying the gap.
24. The blade holder of claim 23 wherein the blade holder has at
least a second fastening point for a backing blade, the second
fastening point forming a longitudinally extending groove which has
a larger portion for receiving a form-locking detent and a second
smaller portion which is in part coextensive with the first smaller
portion.
25. The blade holder of claim 23 wherein a portion of the front
part of the blade holder which forms the clamp extends over the gap
with the said portion forming part of the first smaller portion
extending in a direction overlying the gap.
26. The blade holder of claim 23 wherein the composite material
pultrusion has fewer reinforced fibers extending in the
longitudinal direction than in the lateral direction.
27. Papermaking equipment including a blade holder comprising: a
surface mounted for motion; a frame arranged in the vicinity of
said surface, and mounted for motion; a blade holder formed as a
composite material pultrusion and forming a single integral
longitudinally extending component, the blade holder having a front
part and a rear part and extending in a lateral direction
therebetween, the lateral direction being transverse to a
longitudinal direction defined by the longitudinally extending
component, the rear portion forming a first part of a pair of
form-lockable counter clamps, a member having portions forming a
second part of the pair of form-lockable counter clamps, said
second part having portions forming a part which is connected to
the frame, or is connected to an adapter component which is
connected to the frame; a doctor blade; a backing blade; wherein
the front part of the blade holder forms a clamp defining a gap for
receiving the doctor blade, and a portion of the front part defines
at least one fastening point for the backing blade; wherein the
doctor blade fits within the gap defined by the clamp, the doctor
blade including an edge extending in the longitudinal direction,
the edge arranged to be placed in contact with the surface mounted
for motion by a movement of the blade holder, and wherein the pair
of form-lockable counter clamps are arranged to prevent movement of
the blade holder in the lateral direction; wherein the pair of
form-lockable counter clamps are arranged to provide free motion of
the blade holder in the longitudinal direction of the blade; and
wherein the backing blade is mounted to the blade holder by a first
end mounted to the fastening point of the blade holder, and the
backing blade having a second end which extends closer to the edge
of the blade than any portion of the blade holder.
28. The apparatus of claim 27 wherein the rear portion of the blade
holder forms a longitudinally extending shoulder, the rear portion
arranged to form one part of the pair of form-lockable counter
clamps, the longitudinally extending shoulder having portions which
cooperate in forming the pair of form-lockable counter clamps to
prevent movement in a lateral direction, and to provide essentially
free motion in the longitudinal direction.
29. The apparatus of claim 27 wherein the portion of the front part
defining at least one fastening point for the backing blade forms a
longitudinally extending groove which has a larger portion for
receiving a form-locking detent and a first smaller portion
extending in a direction overlying the gap.
30. The apparatus of claim 27, wherein the second counter clamp of
the pair of counter clamps forms part of an adapter component,
which is connected to the frame.
31. The apparatus of claim 27, wherein the pair of counter clamps
is arranged as a mutually functional articulation, so that an angle
between the form-lockable counter clamps can be varied.
32. The apparatus of claim 31, wherein at least one of the
form-lockable counter clamps has at least one provision for a
loading element.
Description
CROSS REFERENCES TO RELATED APPLICATIONS
[0001] This application is a U.S. national stage application of
international app. No. PCT/FI2004/050006, filed Jan. 27, 2004, the
disclosure of which is incorporated by reference herein, and claims
priority on Finnish Application No. 20035010, filed Jan. 30,
2003.
BACKGROUND OF THE INVENTION
[0002] This invention relates to composite-construction treatment
equipment, which is designed to be set in connection with a moving
surface and which equipment includes [0003] a frame arranged in the
vicinity of the said surface, [0004] a blade holder formed of a
composite material as an essentially integral component and
connected to the frame, [0005] a blade adapted to the blade holder,
including an edge arranged to be set in contact with the moving
surface by moving the blade holder, and [0006] a separate backing
blade adapted to the blade holder, set to the blade holder by one
end while the other end extends closer to the said edge than the
blade holder.
[0007] In the present treatment equipment blade holders
manufactured entirely of a composite material have been in use only
for a short period of time. One known blade holder located in a
paper machine has an arm section by which the blade holder is
attached to a frame formed by a beam. The arm section is extended
with a clamp section, which is fitted with a gap for the blade. A
composite-construction blade holder is light in weight and durable
compared to conventional metal blade holders. The blade holder can
also be made more adaptable to the surface for example by
orientating the reinforced fibers. In spite of this, the blade
holder is rigid in the blade loading direction, i.e. in the machine
direction. In addition, the composite-construction returns to the
original shape even after major deformations.
[0008] Conventionally the blade holder is attached to the frame
using screws. This requires removing the screws during the
installation and change of the blade holder, which takes time and
requires working inside the paper machine. In some cases even the
whole treatment equipment needs to be removed from the paper
machine for installing the blade holder. In addition, the holes
required by the screws in the arm section create discontinuity
points in the blade holder construction reducing thus its
durability.
SUMMARY OF THE INVENTION
[0009] The object of this invention is to provide novel
composite-construction treatment equipment, which is easier to use
and service, yet more versatile than heretofore. The features
characterizing this invention become evident from the appended
claims. In the treatment equipment according to the invention, due
to the novel design, the whole blade holder can be changed in a
simple manner. This makes the installation and change of the blade
holder quick and easy. Irrespective of the unexpected construction,
the blade holder can additionally be provided with loading
elements, for example. The blade holder can also be easily
retrofitted in existing treatment equipment without major
modifications. On the other hand, the design of new treatment
equipment can be made simpler than before. In addition, with
suitable dimensioning and design the components of the treatment
equipment can be changed independent of each other, which allows to
precisely adjust the treatment equipment characteristics as
desired.
[0010] The invention is described below in detail by making
reference to the enclosed drawings, which illustrate some of the
embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is a side view of the treatment equipment according
to the invention arranged in connection with a moving surface.
[0012] FIG. 2a is an enlarged view of the blade holder illustrated
in FIG. 1.
[0013] FIG. 2b is a cross-sectional view of a modification of the
blade holder shown in FIG. 2a without a blade.
[0014] FIGS. 3a, 3b, 3c, and 3d illustrate various applications of
the blade holder according to the invention.
[0015] FIG. 4a is a cross-sectional view of the blade holder
according to the invention equipped with loading elements.
[0016] FIG. 4b shows the blade holder of FIG. 4a only.
[0017] FIG. 5a shows another application of the treatment equipment
according to the invention.
[0018] FIG. 5b shows another application of the blade holder
equipped with loading elements.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0019] FIG. 1 shows the treatment equipment according to the
invention adapted in connection with a moving surface 10. Here the
moving surface 10 is a paper machine roll 11, of which only a part
is shown. Generally the purpose of the treatment equipment is to
treat a moving surface. In the doctoring example, the purpose of
doctoring is to remove impurities from the surface or, for example,
the web itself in some paper machine positions. In paper and board
machines and in other forming machines, moving surfaces also
comprise the surfaces of various cylinders and fabrics. The
treatment equipment is used for example for web coating, in which a
coating paste is applied to the surface of a moving web. This is
illustrated in FIG. 5a. Furthermore, the treatment equipment
comprises a frame 12, arranged in the vicinity of the surface 10 to
be treated. In FIG. 1 the frame 12 is a beam 13, which is supported
by a shaft 14 in a way that allows pivoting in relation to the
paper machine construction. In practice, the beam is locked in the
correct position using turnbuckle screws, for example (not shown).
On the other hand, the beam can be pivoted towards the surface by
means of loading elements for improving the doctoring result.
[0020] The treatment equipment also includes a blade holder 15,
which is made of a composite material to form an essentially
integral component. The advantages of this type of blade holder are
described below in greater detail. The blade holder 15 is
correspondingly attached to the frame 12 (FIG. 1). The actual
treatment is provided by the blade 16 adapted to the blade holder
15, the dimensioning and material of which can vary between
different applications. In the proposed applications both the
doctor blade and the coating blade are described. The blade 16
includes a doctoring edge 17, shown in FIG. 2A, which is arranged
in contact with the moving surface 10 by moving the blade holder
15. In this way the moving surface is provided with a treatment.
FIG. 1 shows a so-called rigid blade holder 15, in which the
movement of the blade holder 15 is created by pivoting the beam 13.
The proposed blade holders 15 also comprise a separate backing
blade 18, which is set in the blade holder 15 by one end.
[0021] Correspondingly, the other end of the backing blade 18
extends closer to the said edge 17 than the blade holder 15 thus
supporting the blade 16. The operation of the backing blade is also
described below in greater detail. The blades 16 shown in the
figures are new. In a worn blade the edge is to the other
direction. On the other hand, a bevel corresponding to a worn blade
can in practice be pre-ground to the blade. In FIGS. 1 and 5a the
movement direction of the surface 10 is indicated by the arrow.
[0022] According to the invention, the blade holder 15 is
unexpectedly removably adapted to the frame 12 using a pair of
form-locking counter clamps 19. The form-lock between the counter
clamps 20 and 21 is additionally arranged tight in the lateral
direction of the blade 16 and essentially free in the longitudinal
direction of the blade 16. This allows moving the blade holder 15
in the longitudinal direction of the blade, i.e. in the cross
direction of the machine. In practice, for example in a paper
machine, the blade holder can be installed simply by pushing from
the side and correspondingly, it can be removed by pulling it out.
In spite of this quick clamping the form-lock is tight in the
lateral direction of the blade. This ensures that the blade holder
is reliably kept in place in the machine direction. For additional
security during the operation, the cross-machine directional
mobility can be prevented using a locking pin, for example. On the
other hand, this cross-directional mobility can be utilized for
oscillation with appropriate material selections. That is, the
blade can be moved in relation to the surface by moving the blade
holder only. All parts are preferably made of a composite material.
Consequently, the scratching effect of metal rivets, for example,
can be avoided.
[0023] In the proposed treatment equipment the first counter clamp
20 forming the pair of counter clamps 19 is a profiled shoulder.
Correspondingly, the second counter clamp 21 is adapted to cover
the first counter clamp 20 essentially on the opposite sides. In
this way the said second counter clamp 21 forms a groove against
the first shoulder-like counter clamp 20. In principle the location
of the counter clamps can vary. However, in the blade holder 15 the
counter clamp is preferably arranged in the rear part parallel to
the blade holder. In this case the blade is attached to the front
part of the blade holder 15. Here the front part refers to the
blade holder part, which is nearest to the surface to be doctored.
With the proposed construction of the counter clamps, the blade
holders can be freely positioned, and the blade holder can be
designed optimally as regards loading and blade attachment. At the
same time, disadvantageous projections, which would gather
impurities and be sensitive to damage, are avoided.
[0024] Existing frames are usually provided with threaded holes for
attaching the blade holder. In this case the attachment of the
blade holder 15 is easy using an adapter component 22 according to
the invention. Generally one of the counter clamps forming the pair
of counter clamps is thus arranged in a separate adapter component,
which is to be attached to the frame. The fastening screws are
illustrated with broken lines in the figures. The first embodiment
of the adapter component 22 is illustrated in FIGS. 1, 2a and 2b.
Here the adapter component 22, together with the frame 12, forms
the counter clamp 21 for the shoulder-like counter clamp 20 formed
in the blade holder 15. The proposed construction is extremely
compact, and the adapter component 22 is easy to attach to the
frame 12. In addition, the arm sections of even the known
composite-construction blade holders can be modified into
shoulder-like counter clamps using suitable machining methods. In
practice, however, it is more preferable to bring the blade holder
to the final state in connection with the manufacture, thus
maintaining an integral blade holder construction. The same
reference numbers are used for functionally similar parts.
[0025] The following embodiments of the adapter component 22 are
shown in FIGS. 3a and 3b. Here one of the counter clamps 20 or 21
is completely formed in the adapter component 22. In this way the
adapter component 22 can be permanently attached to the frame 12.
In FIG. 3a the adapter component 22 is provided with a
shoulder-like counter clamp 20 while the groove-like counter clamp
21 is located in the blade holder 15. This ensures that the
form-lock is well protected from impurities. In addition, the blade
holder 15 can be designed advantageously as regards the
manufacture. In the treatment equipment shown in FIG. 3a the
adapter component 22 also has a curve 23 for compensating the
change of the blade position with respect to a conventional blade
holder. Due to the adapter component 22 the blade 16 extends closer
to the surface 10, in which case the blade angle .alpha. of the
blade 16 relative to the surface most often changes. According to
FIG. 1, as the length of the blade holder 15 increases, the blade
angle .alpha. decreases, which usually has a negative effect on the
doctoring result. This problem can be avoided by moving the blade
holder in the vertical direction, or it can be at least avoided by
adjusting the beam and its position. If required, the adapter
component provided with a curve can be installed in the frame also
the other way round. The straightness and shape of the curve can
also vary between different applications.
[0026] For example, when manufacturing new treatment equipment
according to the invention, the adapter component can be excluded.
This is possible by arranging one of the counter clamps 20 or 21
forming the pair of counter clamps 19 in the frame 12. This is
shown in the embodiments of FIGS. 3c and 3d. In particular the
blade holder 15 shown in FIG. 3d can be made extremely short, which
allows its positioning in confined positions.
[0027] Today also adjustable blade holders are used, in which the
frame keeps its place as the blade holder turns. In addition to the
above-described rigid blade holders, the blade holder according to
the invention can also be arranged adjustably. Generally the
counter clamps forming the pair of counter clamps are arranged as a
mutually functional articulation. In this case it is possible to
change the angle between the counter clamps while keeping the
locking in the blade's lateral direction unchanged. The embodiment
of an adjustable, or rather of a loadable blade holder 15 is shown
in FIG. 4a. The principle of this blade holder 15 is corresponding
with that of the blade holder 15 shown in FIG. 3a, except that the
counter clamp 21 of the blade holder 15 is made more spacious. This
ensures that the form-lock is maintained while the movement is
still possible. For defining the movement, there are loading
elements 24 between the counter clamp 20 and the blade holder 15.
In the embodiment shown in FIG. 4a the loading elements 24 are
placed between the adapter component 22 and the blade holder
15.
[0028] The positioning of the loading elements may be difficult due
to a confined construction. The lack of space can be avoided by
arranging at least one provision in either or both of the counter
clamps for the loading elements. In FIG. 4a the blade holder 15 has
such provisions on both sides of the adapter component 22. The
upper provision has a loading hose 26, known as such, and the lower
provision has a spring component 27. FIG. 4b illustrates both the
upper provision 25 and the lower provision 25' in more detail. The
treatment equipment in question is so adapted that the spring
component 27 tends to turn the blade 16 upwards. Correspondingly,
the blade 16 can be loaded against the surface by adjusting the
pressure in the loading hose 26. The movement of the blade holder
15 is indicated by the arrow in FIG. 4a, which shows a solution
that is particularly advantageous for new treatment equipment
according to the invention. In this case only one loading hose is
needed for using the blade holder. For the existing treatment
equipment including two loading hoses, a blade holder can be
selected, in which there are provisions for two loading hoses (not
shown).
[0029] FIG. 5b shows another embodiment of the loadable blade
holder. Here, too, the blade holder 15 movement is provided by
means of the loading hose 26. Correspondingly, the returning force
is produced by another loading hose 26' or a spring component 27.
Here the adapter component 22 extends to both sides of the frame
12. The fastening is secured with screws.
[0030] The design of the blade holder according to the invention
allows using different blades. FIG. 3a illustrates a thick plastic
blade and FIGS. 3b-3d show thin metal or composite material blades.
Due to the blade holder design, thin blades can be fastened using
several different methods. In FIG. 3c a conventional rivet 28 is
used, whereas in FIG. 3b a composite blade has been attached using
a special adapter 29. In a similar composite blade shown in FIG. 3d
there is an extension 30 in the rear part that is larger and
different in shape, in which case a separate adapter is not
necessary. For the blade 16 the blade holder also has a gap 32,
defined, besides the backing blade 18, by the clamp 33.
[0031] In the treatment equipment, the function of the backing
blade, too, is essential. According to the invention the backing
blade 18 is similar to the blade 16. In addition, the end of the
backing blade 18, which is to be adapted to the blade holder 15,
has a form-lockable detent 34 for fastening the backing blade 18
removably to the blade holder 15. In this way the backing blade,
like the blade holder, has a quick clamping system, allowing its
replacement. Furthermore, in selecting and manufacturing the
backing blade, it is possible to utilize the know-how and
production methods related to the blades, which simplifies the
manufacture of the treatment equipment and reduces costs. A portion
of a front part of the blade holder forming the blade clamp 33
defines the gap 32 for receiving the blade 16. The front part
defines at least one fastening point for the backing blade 18, the
fastening point forming a longitudinally extending groove which has
a larger portion for receiving the form-locking detent 34 and a
first smaller portion extending in a direction overlying the gap
32.
[0032] FIG. 2b shows an application related to the backing blade
18. Here the blade holder 15 has two fastening points 31 for the
detent 34 for adjusting the position of the backing blade 18 in the
lateral direction of the blade 16. That is, the blade holder 15 has
two alternative fastening points 31 for connecting the backing
blade 18. In this case it is possible, for example, to use backing
blades of two different dimensional classes in the blade holder.
Secondly, the groove formed by the fastening point 31 can be used
for example for supplying a lubricant to the blade and further to
the surface to be treated. Also, it is possible to adapt a pipe,
for example, in the groove for the lubricant preventing thus
application of pressure to the blade holder. In addition, the pipe
can be easily sealed and the lubricant dosing is accurate.
[0033] In total, the manufacture of treatment equipment according
to the invention is less complicated than heretofore. Preferably
all parts are manufactured using the pultrusion method. This
ensures that the components are ready for use without major
machining operations. In addition, when using the pultrusion
method, reinforced fibers can be set in the component in a
specified manner. Preferably there are remarkably fewer reinforced
fibers extending in the cross-machine direction than extending in
the lateral direction of the machine. In this way the blade,
backing blade, blade holder and even the adapter component, if any,
adapt to the shapes of the surface to be doctored. That is, the
entire treatment equipment is controllably flexible in the cross
direction of the machine. This eliminates vibration problems of the
treatment equipment and uneven blade wear, among other things. In
addition, the known micro-screws designed for profile control are
unnecessary. Instead, the major part of reinforced fibers is found
extending in the lateral direction of the machine, in which case
the treatment equipment can be loaded against the surface. That is,
the components are rigid for transferring the force.
[0034] The above-described construction also enables a quick
adjustment of the treatment equipment. Various types of blade
holders can be attached to the frame and similarly, various types
of blades and backing blades can be quickly replaced in the blade
holders. In this way it is possible to obtain a suitable
combination for each situation by changing the components. Due to
the removable backing blade, the blade holder can additionally be
entirely cleaned. This is easy also on the outside of the machine,
as the whole blade holder can be simply removed from the
machine.
[0035] Composite-construction treatment equipment is advantageous
as regards the operation as well. Firstly, for example the tested
blade holders weigh only 3 kg/m, in which case bending due to their
own weight is nonexistent. In addition, the blade holder can be
installed in the treatment equipment manually without cranes or
other supports. Furthermore, the composite-construction endures
well sudden impacts and returns to the original shape in spite of
even major deformations. On the other hand, when damaging, the
composite-construction breaks totally at once, functioning thus as
a special safety fuse. In case of damage to the blade holder, it
can be quickly replaced with a new one without a lengthy
unoperative state of the treatment equipment. Damaging also saves
other constructions of the treatment equipment. The operation of
the treatment equipment can also be easily monitored by installing
diaphragm sensors, for example, between the blade and the backing
blade for determining the loading pressure profile.
[0036] The treatment equipment according to the invention is simple
to manufacture, yet versatile to use. In addition, installing the
treatment equipment and changing its components is quick, which
reduces production breaks. In particular, the blade holder is light
in weight, and therefore its storing and especially handling is
easy. Also, in using the blade holder, less force is required than
before. Another significant aspect is also the possibility of
combining various components into a combination appropriate for
each situation. Consequently, the desired doctoring result is
obtained in each position, also when the geometry of the position
changes, for example, when changing in a certain position a roll,
whose diameter differs from that of the previously used roll. In
addition, the treatment equipment can be reset during a grade
change shutdown even when changing the production parameters, which
is impossible in the known treatment equipment.
* * * * *