U.S. patent application number 10/541931 was filed with the patent office on 2006-02-23 for device for transferring or threading beginnings of bands.
This patent application is currently assigned to SMS DEMAG AG. Invention is credited to Heiko Zetzsche, Bernd Zilkenat.
Application Number | 20060037989 10/541931 |
Document ID | / |
Family ID | 32863793 |
Filed Date | 2006-02-23 |
United States Patent
Application |
20060037989 |
Kind Code |
A1 |
Zilkenat; Bernd ; et
al. |
February 23, 2006 |
Device for transferring or threading beginnings of bands
Abstract
The present invention pertains to a device for transferring or
threading beginnings of a band, especially extremely thin bands,
from a band machining or band processing unit to a or into a
further processing unit or winding reel, consisting of a transfer
table (1), whose width corresponds at least to the width of a band
to be conveyed, and whose table surface has a lengthwise slot (8)
in the conveying direction of the band, which is narrower than the
minimum width of a band to be conveyed, by means of which the upper
run of a conveyor belt (7) running in the conveying direction of
the band can be pivoted over the surface of the transfer table and
to which the band to be conveyed can be connected by external force
for a while.
Inventors: |
Zilkenat; Bernd;
(Hilchenbach, DE) ; Zetzsche; Heiko; (Hilchenbach,
DE) |
Correspondence
Address: |
DUANE MORRIS, LLP;IP DEPARTMENT
30 SOUTH 17TH STREET
PHILADELPHIA
PA
19103-4196
US
|
Assignee: |
SMS DEMAG AG
Eduard-Schloemann-strasse 4
40237 Dusseldorf
DE
|
Family ID: |
32863793 |
Appl. No.: |
10/541931 |
Filed: |
February 3, 2004 |
PCT Filed: |
February 3, 2004 |
PCT NO: |
PCT/DE04/00205 |
371 Date: |
July 8, 2005 |
Current U.S.
Class: |
226/92 ;
226/170 |
Current CPC
Class: |
B21C 47/34 20130101;
B21B 39/04 20130101; B65H 20/00 20130101; B21B 39/02 20130101; B65H
2701/173 20130101; B65H 2301/522 20130101 |
Class at
Publication: |
226/092 ;
226/170 |
International
Class: |
B65H 20/06 20060101
B65H020/06 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 6, 2003 |
DE |
103 05 414.6 |
Claims
1. Device for transferring or threading beginnings of a band,
especially of extremely thin bands, from a band machining or band
processing unit to a or into a further processing unit or winding
reel, consisting of a transfer table (1), whose width corresponds
at least to the width of the band to be conveyed, and whose table
surface has a lengthwise slot (8) in the conveying direction of the
band, which is narrower than the minimum width of a band to be
conveyed, by means of which the upper run of a conveyor belt (7)
running in the conveying direction of the band can be pivoted over
the surface of the transfer table and to which the band to be
conveyed can be connected by external force for a while.
2. Device in accordance with claim 1 characterized in that magnets,
which pull the band to be conveyed against the top side of the
upper run, are arranged under the top run of the said conveyor belt
(7).
3. Device in accordance with claim 2, characterized in that the
magnets are electromagnets.
4. Device in accordance with claim 1, characterized in that the
said conveyor belt (7) is provided with holes, and that suction
nozzles, which pull the band to be conveyed against the top side of
the upper run, are arranged under the upper run.
Description
[0001] The present invention pertains to a device for transferring
or threading beginnings of a band, especially extremely thin bands,
from a band machining or band processing unit to a or into a
further processing unit or winding reel.
[0002] Devices of this type have become known in a wide variety of
embodiments.
[0003] Thus, such a device is disclosed in DE 40 18 950 A1, wherein
a band threading carriage is provided, which is arranged downstream
of a reel. The band threading carriage has a pivotable clamping
device, which is provided on the front end with a bit. With this
[band threading carriage], the coil of a band located on the reel
can be opened, and then the beginning of the band is immediately
hydraulically or magnetically detected and transferred by the
carriage, which moves lengthwise, to a subsequent band machining or
band processing unit, i.e., e.g., it is threaded there.
[0004] A lengthwise moving carriage has likewise become known from
DE-AS 26 04 909, wherein this [carriage] detects and transfers the
beginning of the band unwinding from the coil also by means of
clamping. Corresponding means are also used for transferring the
band coming out of a roll stand to a winding reel or threading into
same.
[0005] These devices are suitable for normal band thicknesses.
However, so-called extremely thin bands cannot be handled with
these. These bands are defined as bands with a thickness less than
0.2 mm. Up to now, a manual handling is necessary for transferring
or threading these bands, since advancing the thin band over a
longer distance, as may occur, e.g., between two roll stands or
between the outlet from a roll stand and the next reel, is not
possible. In practice, the band had to be pushed or to be carefully
pulled, whereby it was not possible to prevent the band from being
displaced uncontrolled out of the center of the line of movement.
Of course, the fact that the space between two unit parts is often
so narrow that access is only possible under certain conditions
also plays a role.
[0006] Such a displacement may, however, lead to the band winding
onto the reel at an angle during the winding up. This in turn leads
to either folds occurring on the reels, which inevitably damage the
reel, or else telescoping of the band occurs.
[0007] Therefore, the object of the present invention is the
creation of a device, with which especially the handling of
extremely thin bands during transferring or threading is possible,
and preferably automatically.
[0008] This object is accomplished according to the present
invention with a device for transferring or for threading
beginnings of a band, especially of extremely thin bands, from a
band machining or band processing unit to a or into a further
processing unit or winding reel, consisting of a transfer table,
whose width corresponds at least to the width of a band to be
conveyed, and whose table surface has a lengthwise slot in the
conveying direction of the band that is narrower than the minimal
width of a band to be conveyed, through which the upper run of a
conveyor belt rotating in the conveying direction of the band is
pivotable above the surface of the transfer table and can be
connected by external force to the band to be conveyed for a
while.
[0009] Unlike the state of the art described in the introduction,
the band is thus not gripped, but rather it is placed by external
force on an endlessly running conveyor belt for a while. Such a
placement can be carried out with considerably more care than the
gripping used up to now.
[0010] Moreover, it is essential that the width of the conveyor
belt is smaller than the minimum width of the band to be conveyed,
so that, in principle, only a very narrow range of the band is
detected for conveying.
[0011] A distinction must now be made that the bands to be handled
may have different properties, and they may be magnetic or
non-magnetic.
[0012] If it is a magnetic band material, then magnets, which pull
the beginning of the band against the conveyor belt, as well as the
top side of the upper run of the conveyor belt, are arranged under
the upper run of the endlessly running conveyor belt. If permanent
magnets are used for this, their action occurs only as long as the
conveyor belt is located in the pivoted-out state, i.e., above the
table surface. If electromagnets are used, then the action only
occurs, if the electromagnets are activated. It is important that
the action only occur for a while. After transferring and/or
threading into a next unit, the separation of the conveyor belt
from the band takes place, so that the band runs freely between the
previous outlet and the next inlet.
[0013] If the band is made of non-magnetic material, then suction
nozzles are arranged under the upper run of the conveyor belt, and
the conveyor belt itself is provided with openings or holes. In
this case, the extremely thin band is placed by external force onto
the top side of the upper run of the conveyor belt by partial
vacuum for a while. Thus, a rapid conversion or exchange between
these types of conveying can take place, electromagnets and suction
nozzles may also be installed together under the upper run of the
conveyor belt.
[0014] Advantageously, the entire device is arranged pivotably,
i.e., for use the conveyor belt is moved into the plane of
conveying, and pivoted out of same when not needed, so that it does
not interfere with the next course of movement.
[0015] The present invention shall be explained below in an
exemplary embodiment, wherein only the basic principle is
schematically shown in the drawings, in which
[0016] FIG. 1 shows a top view of the transfer table shown in a
simplified manner, and
[0017] FIG. 2 shows a schematic side view of the pivotable conveyor
belt.
[0018] In the figures, the transfer table, which has a slot 8, is
designated by 1. The maximum band width X and the minimum band
width Y are indicated in FIG. 1, so that it is evident that the
slot is narrower than the minimum band width of a band to be
conveyed.
[0019] A roll stand (or a last stand of a mill train) is indicated
by 3. The dash-dot line 4 indicates the center of the roll and also
the conveying plane of the exiting band. The device according to
the present invention for transferring or threading a extremely
thin band has an endlessly running conveyor belt designated by
7.
[0020] This conveyor belt is arranged pivotably, which has been
indicated by the reference number 2. The two positional views show
that in this way the conveyor belt can be moved in or out of the
conveying plane. i.e., it is raised above the surface or table
surface of the transfer table 1 or lowered. Under the upper run of
the conveyor belt 7 are located either magnets or suction nozzles
6, by means of which the band exiting from the stand--or stated
more exactly the beginning of this band--can be placed by external
force on the top side of the upper run of the conveyor belt 7 for a
while, i.e., as long as the upper run of the conveyor belt is in
its position above the table surface, so that, by moving the
conveyor belt, the band to be conveyed, especially the beginning of
the band, is also moved.
* * * * *