U.S. patent application number 10/501961 was filed with the patent office on 2005-04-28 for roll system, particularly a contact roll system of a winding machine.
Invention is credited to Fischer, Uwe, Hutzenlaub, Armin.
Application Number | 20050087648 10/501961 |
Document ID | / |
Family ID | 7712594 |
Filed Date | 2005-04-28 |
United States Patent
Application |
20050087648 |
Kind Code |
A1 |
Fischer, Uwe ; et
al. |
April 28, 2005 |
Roll system, particularly a contact roll system of a winding
machine
Abstract
In winding machines, known roll systems are used that contain a
number of freely rotatable roll segments (3), which are situated
next to one another face to face and mounted in a manner that
enables them to move perpendicular to their rotation axis (4).
According to the invention, the roll segments (3) are mounted so
that only one respective face is mounted on a bearing journal (5),
which is fastened in an interspaced manner to a bearing plate (6)
that can move perpendicular to the rotation axis (4). An annular
slot (15) is fashioned in at least one inner side of each bearing
plate (6), and the end of a roll segment (3) can rotate without
touching inside this annular slot.
Inventors: |
Fischer, Uwe; (Lindlar,
DE) ; Hutzenlaub, Armin; (Wiehl, DE) |
Correspondence
Address: |
THE FIRM OF KARL F ROSS
5676 RIVERDALE AVENUE
PO BOX 900
RIVERDALE (BRONX)
NY
10471-0900
US
|
Family ID: |
7712594 |
Appl. No.: |
10/501961 |
Filed: |
August 17, 2004 |
PCT Filed: |
December 19, 2002 |
PCT NO: |
PCT/EP02/14551 |
Current U.S.
Class: |
242/547 |
Current CPC
Class: |
B65H 18/26 20130101;
B65H 2601/211 20130101; B65H 2404/43 20130101; B65H 2301/4148
20130101; B65H 2404/1321 20130101 |
Class at
Publication: |
242/547 |
International
Class: |
B65H 018/26 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 18, 2002 |
DE |
102 02 020.5 |
Claims
1. A roll system, especially a contact roll system of a winding
machine having a plurality of roll segments (3) freely rotatable
adjacent one another, end face to end face and mounted so as to be
movable perpendicular, to their rotation axes (4), characterized in
that the roll segments (3) are each journaled at one end face on a
respective bearing pin (5) which projects from a bearing plate (6)
on which it is fastened and which is movable perpendicularly to the
rotation axis (4) whereby in at least one inner side of each
bearing plate (6) an annular groove (15) is machined in which he
end of a roll segment (3) can rotate contactlessly.
2. The roll system according to claim 1 characterized in that each
two roll segments (3.1, 3.2) is held on a common bearing plate (6)
with bearing pins (5.1, 5.2) projecting from opposite sides.
3. The roll system according to claim 1 characterized in that the
roll segments are mounted so as to be linearly shiftable
perpendicular to their rotation axes (4).
4. The roll system according to claim 1 characterized in that the
bearing plates (6) are mounted so as to be swingable perpendicular
to the rotation axis (4).
5. The roll system according to claim 1 characterized in that the
bearing plates (6) are mounted on a common traverse (9) which
extends transversely and are each movable by a respective drive
(10) perpendicular to the rotation axis.
6. A winding machine for winding up a continuous traveling web (1)
of material, especially a paper web or a plastic foil or film,
characterized in that it contains a roll system according to claim
1 as a contact roll system.
Description
TECHNICAL FIELD
[0001] The invention relates to a roll system, especially a contact
roll system, for a winding machine having a multiplicity of roll
segments which are journaled adjacent one another end face to end
face for free rotation and are movable perpendicularly to their
rotation axis and to a winding machine for winding up a traveling
web of material, especially a paper web or a web of plastic foil or
film, which contains the roll system as a contact roll system.
STATE OF THE ART
[0002] In winding machines for the winding up of continuous
traveling webs of material, especially paper webs or webs of
plastic foil or film, contact rolls are used in a known manner as
pressing rolls or squeezing rolls, especially in the case of high
winding speeds, to prevent the incorporation of air into the wound
roll as much as possible. When the winding machine is used for
winding up a web of material which has been subdivided by
longitudinal cuts into a plurality of wound rolls which are to have
cores or sleeves on which the rolls are wound and which are
contiguous or flush with one another, the contact roll for each
wound roll must be individually movable to compensate for
unavoidable diameter differences in the wound rolls. The axial
length of a contact roll must thus be equal to or greater than the
width of the wound roll against which it presses.
[0003] DE 198 05 412-A1 and DE 198 48 532-A1 describe an
advantageous roll system of the type which has been described in
which each roll segment is held in a frame which is mounted so as
to be movable perpendicularly to the rotation axis. Each frame of a
roll segment contains two bearing plates which extend laterally and
parallel to the end faces of a roll segment whereby the neighboring
bearing plates of two roll segments are arranged one over the other
perpendicular to the movement direction. The bearing plates have
deep annular grooves in which end faces of the roll segments can
rotate in a contactless manner. This arrangement enables each roll
segment to be pressed individually against a wound roll and at the
same time permits the gap between two neighboring roll segments to
be held very small and thereby avoids markings on the wound
rolls.
DESCRIPTION OF THE INVENTION
[0004] The invention has as its object to simplify structurally a
roll system of the type described.
[0005] This object is attained in that the roll segments are each
journaled only at one end face on a bearing pin which is mounted to
project perpendicularly from a bearing plate which is movable
perpendicularly to the rotation axis.
[0006] By the advantageous embodiment according to patent claim 2,
each two roll segments are held by a common bearing plate from
which the bearing pins project to opposite sides.
[0007] In order to hold the spacing between two roll segments as
small as possible, in an especially advantageous embodiment
according to patent claim 3, in at least in an inner side of each
bearing plate, an annular groove is machined in which an end of a
roll segment can rotate contactlessly.
[0008] The further dependent claims contain preferred and
especially advantageous refinements of the invention.
BRIEF DESCRIPTION OF THE DRAWING
[0009] The drawing serves for clarification of the invention based
upon a simplified illustrated embodiment. The drawings thus show
in
[0010] FIG. 1 the side view of a contact roll system according to
the invention,
[0011] FIG. 2 a cross section broken away through a first
embodiment in which the two roll segments are held by a common
plate,
[0012] FIG. 3 a plan view of the contact roll system according to
FIG. 2 and
[0013] FIG. 4 a cross section through a second embodiment in which
each bearing plate carries only one roll segment.
MANNER OF CARRYING OUT THE INVENTION
[0014] The contact roll system illustrated in the Figures is a
component of a winding machine for winding up a continuous
traveling material web 1, especially a paper web or a web of a
plastic film or foil. The material web 1 subdivided by longitudinal
cuts, is wound up on sleeves to wound rolls 2. The wound rolls 2
are mounted for the winding upon a common winding shaft or are each
held by two clamping heads insertable into the sleeve. In order to
prevent the penetration of air into the wound rolls 2, especially
at high winding speeds, the winding machine has a contact roll
system which is described in greater detail subsequently.
[0015] The contact roll system comprises a row of roll segments 3
arranged adjacent one another, end face to end face, and whose
axial lengths are smaller than the minimum width of a wound roll 2.
In the embodiment described, the length of a roll segment 3 is 50
mm to 150 mm. Each roll segment is either individually or as part
of a pair together with a second roll segment, mounted so as to be
movable perpendicular to its rotation axis 4. An individual roll
segment 3 or a pair of two roll segments 3.1, 3.2 can thus press
independently from the other roll segments against a respective
wound roll 2 to permit diameter differences in the wound rolls 2 to
be compensated.
[0016] Each roll segment 3 is journaled at one end face on a
bearing pin 5 in a cantilevered manner, the bearing pin 5
projecting from a bearing plate 6 upon which it is fixed. The
bearing plates 6 are movable perpendicularly to the rotation axes 4
of the roll segments 3, preferably by means of respective drives
which are individual to the bearing plates. In the embodiment
illustrated, the bearing plates 6 are shiftably mounted for
movement back and forth with respect to the wound roll 2. For this
purpose they have on their backsides turned away from the wound
roll 2, a respective shank 7 with which they are slidably mounted
in a linear guide 8, preferably a ball guide. The linear guides 8
are affixed to a traverse 9 which extends transversely over the
working width of the wound machine. Thus ends of the bearing plates
6 with the roll segments 3 are mounted thereon are in turn mounted
on the common transversely extending traverse 9. A pneumatic piston
and cylinder unit can serve as the drive for the shifting movement,
and is on the one hand is affixed to a support plate 11 fastened to
the traverse 9 and on the other hand is fixed to the back side of
the bearing plate 6.
[0017] As an alternative to the linear mobility illustrated in the
Figures, the bearing plates 6 can also be movably mounted on an
arcuate track perpendicular to the rotation axis 4. The bearing
plates can be mounted so as to be limitedly swingable, for example
respectively, on rockers each assigned to one of the bearing plates
6.
[0018] As can be seen from the side view of FIG. 1, each bearing
plate 6 ends at its side opposite the fastening end at a slight
distance behind the bearing pin 5 secured thereto. This means that
a roll segment 3 extends peripherally beyond the extent of the
bearing plate 6. The region of contact with the wound roll 2 is
thus maintained free from obstruction. A material web 1 running to
a winding roll 2 can thus be so guided that it initially contacts a
roll segment 3 and then the winding roll 2. This has advantages
from a technological viewpoint with respect to the winding
operation. Because of the bevels at the end of the bearing plate 6
turned toward the winding roll 2, the looping angle of the web 1
around the roll segment 3 can be adjusted independently of the
winding direction and symmetrically for both possible winding
directions. The looping angle of the web 1 on a roll segment 3
amounts to 5.degree. to 30.degree., preferably between 8.degree.
and 20.degree., for the best ability to wind the web while avoiding
the entrainment of air into the roll by adhesion to the web 1.
[0019] Each roll segment 3 is comprised of an annular roll jacket
13 of metal upon which an outer running layer 14 of rubber is
applied. At least at an inner side of each bearing plate 6, an
annular groove 15 is machined concentric to the bearing pin 5. The
curvature and outer dimensions of the annular groove 15 is so
selected that the corresponding end of a roll segment 3 can project
into it and can rotate in a contactless manner within the annular
groove 15. The wall 16 remaining as the base of the groove 15 is
made to be extremely thin since it defines the minimum distance
between two neighboring roll segments 3. Preferably the thickness
of the wall 16 amounts to 1 mm or less. The assembly has an axial
free space between the end faces of the roll segments 3 and the
wall 16 of about 0.2 mm to 2 mm and preferably about 0.3 mm. In
spite of the minimum thickness of the wall 16, the requisite
strength for supporting a roll segment 3 is provided since each
bearing plate 6 is so shaped that the bending line must also run
through thicker regions outside the groove 15. The annular groove
15 enables the requisite gap between two neighboring roll segments
to be held very small. To avoid marking of sensitive webs 1, the
gap should amount to less than 5 mm and preferably the gap is
between 0.8 mm and 5 mm.
[0020] In the embodiment of FIGS. 2 and 3, two roll segments 3.1
and 3.2 are shown to be respectively journaled on both sides of a
common bearing plate 6. For that purpose each bearing plate 6 has
on each side a respective projecting bearing pin 5.1, 5.2 with a
roller bearing 12 upon which a rolled segment 3.1, 3.2 is journaled
so as to be freely rotatable. The bearing plates 6 have on both
sides respectively an annular groove 15.1, 15.2 in each of which
one roll segment 3.1, 3.2 supported by the bearing plate 6 is
rotatable.
[0021] In FIG. 4 an embodiment of the invention has been
illustrated in which each bearing plate has only one projecting
bearing pin 5 on which roll segment 3 is journaled. The bearing
pins 5 each have a respective flange with which they can be secured
by screws to the bearing plate 6. With this embodiment, the bearing
plate 6 has only on one inner side an annular groove 15 while the
backside is planar and has a surface perpendicular to the axis of
rotation 4. The bearing pin 5 and the annular grooves 15 are each
located on the same side of the respective bearing plates 6 so that
the free ends of the roll segments terminate at a slight distance
from the rear wall of the neighboring bearing plate. In this
embodiment as well, the thickness of the wall 16 at the base of the
groove 15 defines the minimum distance of two roll segments 3 from
one another. Since the bearing plate 6 has an annular groove 15
only at one side, it is simpler to fabricate.
[0022] In an embodiment which has not been illustrated, as in the
embodiment of FIG. 2, each two roll segments 3.1, 3.2 are journaled
on both sides of a common bearing plate 6. The bearing plate 6 is
configured as has been illustrated for the embodiment of FIG. 4,
with only one annular groove 15 on one side. On the back wall,
without a groove, the second bearing pin 5.2 is affixed which
carries the second roll segment 3.2. This embodiment has the
advantage of the embodiment of FIG. 12, namely, that only one
bearing plate 6 is provided for each two roll segments 3.1, 3.2. In
addition, it utilizes a bearing plate 6 of the type shown in FIG. 4
which is simpler to fabricate since it has an annular groove 15 on
only one side.
[0023] According to a preferred embodiment, two neighboring bearing
plates 6 and thus roll segments held thereby can be mechanically so
coupled together that the rotation axes 4 of the roll segments 3
exactly align. The roll segments 3 which are coupled together thus
form a rigid combined pressing roll which can press with a common
pressure against a winding roll 2. The contact lines of all roll
segments 3 which are coupled with one another form an exact
straight line or flush relationship. A coupling of two adjoining
roll segments 3 has been found to be advantageous when, because of
large thickness tolerances in the web, wound rolls 2 can develop
excessively great differences in diameter at different zones. It is
then undesirable that each roll segment 3 or each pair of roll
segments 3.1, 3.2 match the actual diameter in their respective
pressing zones. A coupling 2 neighboring roll segments 3 is also
advantageous when roll segment 3 with excessive axial length
projects beyond wound roll and thus concentrates its pressing force
only at the part of its length which is in contact.
[0024] As coupling elements, preferably switchable keys or locks 17
are used as has been shown diagrammatically in FIG. 1 and which may
be movable parallel to the rotation axis 4 on the shank 7 of a
bearing plate 6. The lock 17 can be actuated, for example
magnetically or by a pneumatic cylinder to engage with its end in a
corresponding opening of the shank of the neighboring bearing plate
6.
* * * * *