U.S. patent application number 11/168684 was filed with the patent office on 2006-01-05 for winder.
This patent application is currently assigned to Schumag AG. Invention is credited to Heiner Kudrus.
Application Number | 20060000939 11/168684 |
Document ID | / |
Family ID | 34937673 |
Filed Date | 2006-01-05 |
United States Patent
Application |
20060000939 |
Kind Code |
A1 |
Kudrus; Heiner |
January 5, 2006 |
Winder
Abstract
A winder has at least two winding assemblies, in which each
winding assembly is arranged on its own carriage. This winder is an
improvement over conventional winders, such as those used to wind
copper pipes.
Inventors: |
Kudrus; Heiner; (Eupen,
BE) |
Correspondence
Address: |
WILLIAM COLLARD;COLLARD & ROE, P.C.
1077 NORTHERN BOULEVARD
ROSLYN
NY
11576
US
|
Assignee: |
Schumag AG
Aachen
DE
|
Family ID: |
34937673 |
Appl. No.: |
11/168684 |
Filed: |
June 28, 2005 |
Current U.S.
Class: |
242/474.3 ;
242/486.8 |
Current CPC
Class: |
B65H 65/00 20130101;
B65H 67/044 20130101; B65H 54/22 20130101 |
Class at
Publication: |
242/474.3 ;
242/486.8 |
International
Class: |
B65H 54/70 20060101
B65H054/70 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 30, 2004 |
DE |
10 2004 031846.8 |
Dec 2, 2004 |
DE |
10 2004 058330.7 |
Claims
1. A winder comprising at least two winding assemblies, each
winding assembly being disposed on a separate carriage.
2. The winder according to claim 1, wherein the carriages have
separate drives.
3. The winder according to claim 1, wherein the carriages are
displaceable about different centers of rotation.
4. A winder comprising at least two winding assemblies that are
displaceable between a winding position and an auxiliary activity
position, said two positions being arranged at an angle less than
180.degree. relative to one another.
5. The winder according to claim 4, wherein said two positions are
arranged at an angle equal to or less than 90.degree. relative to
one another.
6. A winder comprising at least one winding assembly that is
displaceable and supported on a sliding bearing.
7. The winder according to claim 6, wherein the sliding bearing has
a sliding surface that is a flooring surface on which said at least
one winding assembly is arranged.
8. A winder comprising at least one displaceable winding assembly
arranged on a carriage that is supported on a floor or base plate
by an air cushion, said air cushion being adapted to be switched on
and off.
9. A winder comprising at least one displaceable winding assembly
arranged on a carriage, said carriage having apertures in an
underside thereof, through which fluid media can be passed.
10. A winder comprising at least one displaceable winding assembly
arranged on a carriage, said carriage having apertures in an
underside thereof, in which an underpressure is created.
11. A winder comprising a winding element for winding a workpiece,
said winding element comprising: at least one winding cylinder; at
least one winding flange; at least one workpiece securing
mechanism, and a workpiece guide that is provided radially inside
an outer radius of the winding flange.
12. The winder according to claim 11, wherein the workpiece guide
is removable from the winding flange.
13. The winder according to claim 11, wherein the workpiece guide
is guided on the winding flange.
14. The winder according to claim 11, wherein the workpiece guide
is displaceable into and out of the winding flange.
Description
BACKGROUND OF THE INVENTION
[0001] The invention relates to a winder, such as are used for
example to wind copper pipes. Winders of such kind may include two
winding assemblies, in which case they are also called double
winders and arranged on a turntable so that they may be turned
alternatingly towards a corresponding feed device, such as an
upstream bending apparatus, which enables winding to be carried out
on one of the winding assemblies while intermediate or auxiliary
activities, such as tying the bobbin and removing the bobbin from
winding assembly, may be performed on the other assembly while it
is facing away from the apparatus. In particular, the invention
relates to winders having at least two winding assemblies, and
which may be shafted between a winding position and an auxiliary
work position. Moreover, the invention also relates to winders
having at least one movable winding assembly. Additionally, the
invention relates to winders having a winding element for winding a
workpiece, the winding element including at least one winding
flange and at least one workpiece retaining mechanism.
SUMMARY OF THE INVENTION
[0002] The task of the present invention is to enable faster
swapping between winding assemblies on winders with two winding
assemblies.
[0003] For this purpose, the invention suggests a winder having at
least two winding assemblies, and which differs from other
solutions in that each winding assembly is arranged on its own
carriage.
[0004] This enables the winding assemblies to be displaced by the
smallest possible distances, particularly a rotation through less
than 180.degree., and to move the displacement caused by a
turntable, so that assemblies may be swapped faster and machine
idle times may be reduced correspondingly.
[0005] The carriages are preferably driven separately. This enables
drive units to be used that are smaller overall than if one drive
unit were used to move both winding assemblies at the same time. As
a result, an exceptional amount of weight and similar may be saved
in terms of the drive units, which in turn means that considerably
faster displacement speeds may be achieved for comparable drive
unit costs, or conversely that less expensive drive units may be
used to achieve comparable displacement speeds. The movements of
the two carriages may also be carried out at different times and
optimized with reference thereto, so that the referenced times may
be minimized. In a design of this kind, it is also conceivable to
use an identical drive motor, which initializes an acceleration of
one carriage with its maximum force at certain times, and governs
the acceleration of another carriage at other times, which enables
assembly costs to be further cut and in particular also reduces the
size of the overall arrangement, which in turn means that smaller
forces are required to accelerate and slow them down.
[0006] The carriages may preferably be displaced about different
centers of rotation. In this way, very small turning radii may be
selected, so that the turning moments occurring during the movement
may be minimized. This allows correspondingly smaller carriages
and/or correspondingly faster movement speeds.
[0007] In particular, it is also advantageous to arrange the
centers of rotation below the winding assemblies, if possible below
the center of gravity of the winding assemblies, which enables the
moments required for the movement to be considerably reduced, which
is correspondingly advantageous.
[0008] On the other hand, it is also possible to move the carriages
along linear tracks, particularly along straight tracks. In theory,
the tracks may be constructed in almost any form, particularly if
complex space constraints are to be considered.
[0009] Additionally or alternatively, the two winding assemblies
may be displaceable between a winding position and an auxiliary
work position, these two positions being offset by an angle less
than 180.degree. with respect to each other. In particular, the two
assemblies may be offset by an angle less than 180.degree. with
respect to each other when one of the two assemblies is in the
winding position and the other of the two assemblies is in the
auxiliary work position. This enables to the paths between these
two positions to be minimized, depending on the other features of
the invention described in the preceding.
[0010] In particular, these two positions may be situated at an
angle equal to or less than 90.degree. with respect to each other.
Particularly in this case, linear drive units such as hydraulically
or pneumatically powered pistons or similar may be used, as they
are relatively inexpensive and fast, thereby further reducing
retooling times.
[0011] In addition or alternatively to the solutions described in
the foregoing, in a winder having at least one displaceable winding
assembly the winding assembly may be supported on a sliding
bearing. Such a sliding bearing has a relatively low profile and
because of the large sliding areas available underneath a winding
assembly may operate with relatively low surface contact pressures,
so that the displacement may be effected with little consumption of
power.
[0012] In this respect, it is advantageous if a sliding surface of
the sliding bearing is an base surface, such as a floor panel for
example, on which the winding assembly is disposed. If the base
surface is used as a sliding surface for a sliding bearing, the
installation of the entire winding assembly sliding bearing is
particularly simple, with the result that the entire sliding
bearing has a particularly low profile. As a result, excessively
deep excavations in the factory foundations, such as are required
for known bearings of species-related winding assemblies, may
advantageously be avoided. Under certain circumstances,
particularly with appropriate consideration for the overall floor
construction, special excavations may be dispensed with
entirely.
[0013] Moreover, a sliding bearing of such kind may be provided in
addition or alternatively to the use of a sliding bearing in a
winder having at least one displaceable winding assembly if the
winding assembly is arranged on a carriage that is supported on a
floor or floor panel via an air cushion that may be switched on and
off. In fact, other sliding bearings or sliding bearings according
to a broader definition may be constructed in a different manner,
for example with suitable sliding surfaces, a fluid sliding film or
a magnetic bearing or similar. However, with an air cushion that
may be switched on and off, it is possible to manufacture a very
inexpensive, highly reliable sliding bearing of such kind.
Moreover, an air cushion has the advantage that no sticking occurs
(stick-slip freedom) when the carriage is set into motion from a
resting position. When the air cushion is switched off, the
carriage also rests relatively rigidly on a floor.
[0014] Since an air cushion is not the only solution in this
context, a winder with at least one displaceable winding assembly
in which the winding assembly is arranged on a carriage, the
underside of which includes openings through which a fluid medium
may be passed, is advantageous for the same reason.
[0015] Regardless of the other features of the invention, a
displaceable winding assembly carriage may be secured to the floor
via apertures in the underside of the carriage, in which an
underpressure is created, thereby creating an extremely solid
connection between the winding assembly and the its base and with
regard to the rest of the system.
[0016] Of course, apertures in a winding assembly carriage,
particularly on the underside of a winding assembly carriage, may
be used both to load with a fluid and also for applying an under
pressure, so that both of these effects may be used to
advantage.
[0017] Other mechanisms that are used in conjunction with a winder,
such as a release mechanism, may be supported accordingly.
[0018] In the present context, a winding assembly includes a
winding element, onto which the workpiece is wound, and a
corresponding drive unit. Preferably, at least one retaining device
is present, with which a completed bobbin may be secured
temporarily, so that it does not uncoil before it is processed
further, for example finally tied.
[0019] In addition or alternatively to the solutions described in
the preceding, a winder is suggested having a winding element onto
which a workpiece is wound, wherein the winding element includes at
least one winding cylinder and at least one winding flange as well
as at least one workpiece retaining element, with a workpiece feed
provided radially inside the outer radius of the winding flange.
This allows the threading operation to be performed considerably
more reliably than is the case in the prior art, until the
workpiece can be secured in a workpiece retaining arrangement and
the actual winding process can be initialized.
[0020] The workpiece guide is preferably removable from the winding
area, i.e. from area in which the bobbin is to be created, after
the workpiece has been secured, so that it does not further
obstruct the winding process.
[0021] All devices that are suitable for securing a workpiece to a
winding hub, such as grippers, clamp connections, screw fixtures or
similar, may be used to secure the workpiece, before the actual
winding process is initialized. A securing mechanism of such kind
ensures particularly during the first windings that they do not
uncoil again. Even when a larger number of bobbins have been
completed, a securing mechanism can prevent the workpiece from
slipping, although this may not be necessary depending on the
nature of the workpiece, and the workpiece securing mechanism in
these cases may be opened again before the end of the winding
process.
[0022] Preferably, the workpiece guide is itself mounted on a
winding flange, so that it may be retained reliably in its optimum
position for a considerable depth into the winding area. In
particular, the workpiece guide may be axially movable into and out
of a winding flange. In this way, the workpiece guide may easily be
removed from the winding area as necessary. Additionally, the
distance by which the workpiece guide is movable axially into the
winding area may be variable, particularly so that adaptations may
be made to various workpiece diameters.
[0023] On the one hand, the workpiece guide may also be equipped
with an axial guide, particularly on the side facing away from the
side on which the workpiece guide is itself mounted, to ensure
secure axial guidance. On the other hand it is known from the
related art to bring the two flanges of a winding hub together
axially, particularly when threading or winding the first winding,
so that only the axial space the workpiece actually needs for the
next winding to be arranged axially adjacent the previous one is
provided. Similarly, the two winding flanges may be moved towards
one another other in the present context as well, so that the
workpiece is sufficiently precisely arranged, and in particular
guided sufficiently precisely in the axial direction to the
workpiece securing mechanism, while the workpiece guide spans the
existing radial gap remaining between the two flanges sufficiently
to ensure that the workpiece is fed reliably into the workpiece
guide.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Further advantages, objectives and properties of the present
invention will be explained in greater detail with reference to the
drawing accompanying the following description, in which a winder
according to the invention is represented. In the drawing:
[0025] FIG. 1 is a winder according to the invention in a
perspective overall view of a processing installation;
[0026] FIG. 2 is an enlarged section of the view of FIG. 1 with a
tying mechanism in a tying position for the first winding
assembly;
[0027] FIG. 3 is the arrangement of FIG. 2 with the tying mechanism
moved back in a tying position for the second winding assembly;
[0028] FIG. 4 is a plan view of the arrangement of FIG. 3 with the
centers and directions of rotation for swinging the first winding
assembly into its winding position and the second winding assembly
into its auxiliary activity position;
[0029] FIG. 5 is the arrangement of FIGS. 2 to 4 in a similar
representation to FIGS. 2 and 3, wherein the first winding assembly
is in its winding position and the second winding assembly in its
auxiliary activity position, in which the tying mechanism is
disposed in the work opening;
[0030] FIG. 6 is a top view of the arrangement of FIG. 5 with the
centers and directions of rotations for swinging the second winding
assembly into its winding position and the first winding assembly
into its auxiliary activity position;
[0031] FIG. 7 is a plan view of an alternative embodiment with
three winding assemblies, which are movable about a single center
of rotation between three working positions;
[0032] FIG. 8 is a further alternative embodiment in similar
representation to FIG. 6, wherein the winding assemblies are moved
in the same direction, not in opposite directions as in FIG. 6;
[0033] FIG. 9 is a top view of a further alternative embodiment
with two winding assemblies that are offset with respect to one
another and are movable about a shared center of rotation in a
first winding position;
[0034] FIG. 10 is a top view to two winding assemblies offset with
respect to one another in a second winding position;
[0035] FIG. 11 is an exploded view of a winding hub with a winding
cylinder and a winding flange; and
[0036] FIG. 12 is a plan view of the components shown in FIG.
11.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0037] The processing installation 1 shown in FIG. 1 includes on
the infeed side a material stock basket 2, where pipe material 3 is
held in stock and may be replaced so that other pipe material, or
other long workpieces, such as rods, wire or similar, may be
supplied. From the infeed side, pipe material 3 passes through
various processing station 4 and at the outfeed side of processing
installation 1 reaches a bender 5, which serves to bend pipe
material 3 before it is wound onto a bobbin 6.
[0038] Bobbin 6 is a part of a winder 7, to which a first winding
assembly 8 and a second winding assembly 9 are attached. Both first
winding assembly 8 and second winding assembly 9 are located on a
baseplate 10 of winder 7. In the arrangement shown until FIG. 4,
first winding assembly 8 is in a winding position 11, while second
winding assembly 9 is in an auxiliary activity position 12. The
main feature of winding position 11 is that in this position pipe
it is possible to wind material 3 onto bobbin 6 of first winding
assembly 8. In the present document, bobbins 6 are designated
collectively with a single FIG. 6, because the accessories for
winding assemblies 8 and 9 are essentially of the same construction
in this embodiment.
[0039] In order to move both winding assemblies 8 and 9 back and
forth between winding position 11 and auxiliary activity position
12, first winding assembly 8 is secured to a first carriage 13, and
second winding assembly 9 is secured on a second carriage 14. Both
carriages 13 and 14 are arranged independently of one another and
movably on base plate 10. Carriages 13 and 14 may also be coupled
and driven together if such a need arises.
[0040] In this embodiment, the sides of both first carriage 13 and
second carriage 14 facing base plate 10 are furnished with a
plurality of air nozzles (not shown explicitly here), through which
compressed air may be forced as needed to form an air cushion
between carriages 13 and 14 of winding assemblies 8 and 9 and the
base plate 10, and both winding assemblies 8 and 8 are easily
movable over base plate 10, possibly in guidance tracks, such as a
linear displacement track or a straight displacement track, for
instance.
[0041] To ensure that pipe material 3 remains wound on a bobbin 6
once it has been wound and does not become at least partly unwound
by accident, when it has been wound, pipe material 2 is secured
with a tying mechanism 15.
[0042] As shown in FIG. 2, for this purpose tying mechanism 15 is
inserted into a tying chuck 16 (for purposes of clarity designated
by a number on first winding assembly 8). As is shown clearly on
second winding assembly 9, this ensures that tying mechanism 15 is
arranged particularly reliably and above all tightly on second
winding assembly 9. When pipe material 3 on bobbin 6 at second
winding assembly 9 has been tied (see FIG. 3), tying mechanism 15
is moved to a second tying position 18, where it is ready to tie
bobbin 6, or pipe material 3 on bobbin 6 of first winding assembly
8. For this purpose, first winding assembly 8 swings in rotation
direction 19 about a center of rotation 20 from winding position 11
to a second, auxiliary activity position 21 (see FIGS. 5 and 6). In
second, auxiliary activity position 21, tying mechanism 15 ties
wound pipe material 3 on bobbin 6 of first winding assembly 8.
Meanwhile, second winding assembly 9 is moved to winding position
11 (see FIGS. 5 and 6). For this, winding assembly 9 swings in
rotation direction 22 about center of rotation 23.
[0043] Center of rotation 20 for first winding assembly 8 is
located below first winding assembly 8. The same is true of center
of rotation 23 for second winding assembly 9. This center of
rotation 23 is also located below second winding assembly 9.
Rotation direction 19 and rotation direction 22 are both
anticlockwise, whereas both return rotation directions 24 and 25
are clockwise.
[0044] Once tying mechanism 15 has been moved away from second
winding assembly 9 and is already in second tying position 18, tied
bobbin 6 of second winding assembly 9 may easily be replaced with
an empty bobbin, so that second winding assembly 9 is again ready
for operation and may be moved back to its winding position 11.
[0045] Once pipe material 3 has been wound onto bobbin 6 at second
winding assembly 9, second winding assembly 9 is swung back from
winding position 11 to auxiliary activity position 12 in reverse
rotation direction 24 about center of rotation 23. Then, second
winding assembly 8 is swung back from auxiliary activity position
21 into winding position 11, again in return rotation direction 24
about center of rotation 20, and is ready for use.
[0046] The winder 107 shown in FIG. 7 has a first winding assembly
108, a second winding assembly 109, and also a third winding
assembly 130. All three winding assemblies 108, 109 and 130 are
supported on a base plate 119 and are rotatable about a single
center of rotation 131.
[0047] For this purpose, first winding assembly 108, second winding
assembly 109, and third winding assembly 130 are all supported
separately on a base plate 110 by an air cushion via a first
carriage 113, a second carriage 114, and a third carriage 136
respectively. Instead of this arrangement, a sliding bearing or a
magnetic bearing, or also a blown fluid other than air may be
used.
[0048] As shown in FIG. 7, first winding assembly 108 is in a
winding position 111, in which pipe material is being wound onto a
bobbin 106 via a bender 105. Second winding assembly 109 is in an
auxiliary activity position 112 and third winding assembly 130 is
in a second auxiliary activity position 121. A tying mechanism (not
shown here) may be moved up to the second winding assembly 109 or
the third winding assembly 130 in both auxiliary activity
positions, 112 and 121 to tie pipe material that has been wound
onto bobbins 106. Of course, any other activities, such as removing
the wound bobbin, may also be carried out in auxiliary activity
positions 112 and 121. In particular, third winding assembly 130
may already be in a waiting position in the second auxiliary
activity position 121 when the pipe material on bobbin 106 has
already been tied in auxiliary activity position 112.
[0049] In particular, it is possible to move the three winding
assemblies 108, 109 and 130 synchronously via a single drive unit.
In this case, it is advantageous if the assemblies are rigidly
attached to each other and it is possible to actuate their air
cushions together. On the other hand, it may be advantageous to
actuate the air cushions or similar of the three winding assemblies
108, 109 and 130 separately, particularly if they are being moved
asynchronously. In such an operating mode, the two assemblies that
are in the auxiliary activity positions, particularly the assembly
that is to be moved to the winding position, may already be in
motion when the assembly that is currently in the winding position
has finished winding and is to be moved away. In this way,
considerable time may be saved in changing winding assemblies. If
the assemblies are able to be moved independently of each other, it
is also possible to provide a smaller drive unit, since the masses
to be accelerated and slowed are significantly smaller for one
assembly than for all three assemblies at once. In such a case, the
energy that must be expended to slow the assemblies may also be
used as necessary to accelerate another assembly, thereby enabling
the size of the drive unit to be reduced further.
[0050] In an alternative embodiment, each of winding assemblies
108, 109 and 130 may also be arranged with respect to the base
plate 110 so that it is movable on base plate 110 and axially along
its respective displacement axis 133, 134 or 135 relative to center
of rotation 131. In this way, additional working space may be
gained.
[0051] The winder 207 shown in FIG. 8 also has a base plate 210, on
which a first winding assembly 208 and a second winding assembly
209 are disposed. In this representation, first winding assembly
208 is in a second auxiliary activity position 221. In this second
auxiliary activity position 221, a tying mechanism 215 has been
moved against first winding assembly 208 in such manner that tying
mechanism 215 is tying pipe material 203 that has been wound onto
bobbin 206. Second winding assembly 209 is in a winding position
211, to that bobbin 206 of second winding assembly 209 communicates
with bender 205 such that pipe material 203 is wound onto bobbin
206 for second winding assembly 209.
[0052] Once bobbin 206 for second winding assembly 209 is full,
second winding assembly 209 is rotated about a center of rotation
241 in direction 240. In this embodiment, center of rotation 241 is
not located directly below second winding assembly 209, but is
offset therefrom. Of course, a common center of rotation may also
be provided here.
[0053] Once second winding assembly 209 has been swivelled about
center of rotation 241 out of winding position 211 and into an
auxiliary activity position 212, first winding assembly 208 may
then be swivelled from second auxiliary position 221 into winding
position 211 by rotating it in direction 242 about center of
rotation 243. Both directions of motion 240 and 242 rotate
clockwise about their respective centers of rotation 242 and 243,
and are rectified accordingly.
[0054] In this embodiment too, the two carriages may be harnessed
together and moved synchronously. However, it is also possible to
perform the movements consecutively, for example by accelerating
the carriage in the auxiliary activity position towards the winding
position before the carriage in the winding position is accelerated
into its adjacent position.
[0055] Winding assemblies 308 and 309 of the winding assembly pair
350 shown in FIGS. 9 and 10 have a common center of rotation 351,
which means that first winding assembly 308 and second winding
assembly 309 may be rotated about this common center of rotation
351 if necessary, but they are arranged offset by a distance 352
along a common longitudinal axis 353 relative to one another.
[0056] For example, when bobbin 306 for first winding assembly 308
is full, winding assembly pair 350 is rotated in the direction of
arrow 354 until second winding assembly 309 is positioned opposite
bender 305, so that empty bobbin 306 of second winding assembly 309
may be wound with pipe material 303 and the wound bobbin from first
winding assembly 308 may be tied and removed. As is shown in FIG.
10, this arrangement particularly enables the winding assembly to
be positioned at an angle to the bender if this is helpful for
winding. The air cushion means that this may also be performed in
other embodiments if required.
[0057] The bobbin shown in FIGS. 11 and 12 has a bobbin core 406
and is arranged on a winding assembly 408. Winding assembly 408
stands on a base plate 410 together with its carriage 413. A bender
405, which feeds bent pipe material 403 to bobbin 406, is arranged
above the bobbin 406.
[0058] The leading edge 460 of the bent pipe material 403 is fed
into a pipe securing mechanism 461 on bobbin 406. To facilitate
this, bobbin 406 is equipped with a pipe guide 462. Whereas pipe
securing mechanism 461 is arranged inside winding hub 406, pipe
guide 462 is located on a winding flange 463 that separates winding
cylinder 464 from winding assembly 408. Winding cylinder 464 is
also furnished with tying grooves 465, which extend into winding
flange 463 in the form of tying apertures 466.
[0059] Pipe guide 462 ensures that pipe material 403 reliably
reaches pipe securing mechanism 461 and is secured there. After the
workpiece is secured, pipe guide 462 is retracted inside winding
flange 463, but in an alternative embodiment it may also be removed
in any other suitable manner. In this embodiment, pipe guide 462
has an axial guide (not shown), which forms a channel together with
the axial outer side of pipe guide 462 and winding flange 463,
which channel also provides reliable axial guidance for the
workpiece.
[0060] Accordingly, while only a few embodiments of the present
invention have been shown and described, it is obvious that many
changes and modifications may be made thereunto without departing
from the spirit and scope of the invention.
LIST OF REFERENCE NUMBERS
[0061] 1 Processing installation [0062] 2 Material stock basket
[0063] 3 Pipe material [0064] 4 Processing stations [0065] 5 Bender
[0066] 6 Bobbin [0067] 7 Winder [0068] 8 First winding assembly
[0069] 9 Second winding assembly [0070] 10 Base plate [0071] 11
Winding position [0072] 12 Auxiliary activity position [0073] 13
First carriage [0074] 14 Second carriage [0075] 15 Tying machine
[0076] 16 Tying chuck [0077] 17 First tying position [0078] 18
Second tying position [0079] 19 Direction of rotation of the first
winding assembly [0080] 20 Center of rotation of the first winding
assembly [0081] 21 Second auxiliary activity position [0082] 22
Direction of rotation of the second winding assembly [0083] 23
Center of rotation of the second winding assembly [0084] 24 Return
direction of rotation of the second winding assembly [0085] 25
Return direction of rotation of the first winding assembly [0086]
105 Bender [0087] 106 Bobbin [0088] 107 Winder [0089] 108 First
winding assembly [0090] 109 Second winding assembly [0091] 110 Base
plate [0092] 111 Winding position [0093] 112 Auxiliary activity
position [0094] 113 First carriage [0095] 114 Second carriage
[0096] 121 Second auxiliary activity position [0097] 130 Third
winding assembly [0098] 131 Central center of rotation [0099] 132
Central direction of rotation [0100] 133 Displacement axis of the
first winding assembly [0101] 134 Displacement axis of the second
winding assembly [0102] 135 Displacement axis of the third winding
assembly [0103] 136 Third carriage [0104] 203 Pipe material [0105]
205 Bender [0106] 206 Bobbin [0107] 207 Winder [0108] 208 First
winding assembly [0109] 209 Second winding assembly [0110] 210 Base
plate [0111] 211 Winding position [0112] 212 Auxiliary activity
position [0113] 213 First carriage [0114] 214 Second carriage
[0115] 215 Tying machine [0116] 221 Second auxiliary activity
position [0117] 240 Displacement axis of the second winding
assembly [0118] 241 Center of rotation of the second winding
assembly [0119] 242 Displacement axis of the first winding assembly
[0120] 243 Center of rotation of the first winding assembly [0121]
303 Pipe material [0122] 305 Bender [0123] 306 Bobbin [0124] 308
First winding assembly [0125] 309 Second winding assembly [0126]
310 Base plate [0127] 350 Winding assembly pair [0128] 351
Secondary center of rotation [0129] 352 Offset [0130] 353 Common
longitudinal axis [0131] 354 Direction of arrow [0132] 403 Pipe
material [0133] 405 Bender [0134] 406 Bobbin [0135] 408 First
winding assembly [0136] 410 Base plate [0137] 413 Carriage [0138]
460 Leading edge of pipe [0139] 461 Pipe securing mechanism [0140]
462 Ripe guide [0141] 463 Winding flange [0142] 464 Winding
cylinder [0143] 465 Tying grooves [0144] 466 Tying aperture
* * * * *