Textiles: spinning – twisting – and twining – Apparatus and processes – Stopping or starting
Utility Patent
1999-04-28
2001-01-02
Calvert, John J. (Department: 3741)
Textiles: spinning, twisting, and twining
Apparatus and processes
Stopping or starting
C057S264000, C057S100000, C057S093000, C057S094000
Utility Patent
active
06167688
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an individual-spindle-drive type multiple twister comprising a larger number of twisting units installed in a line, and a spindle drive source provided for each spindle, and in particular, to an individual-spindle-drive type multiple twister that drives and stops the spindle drive source for each spindle.
BACKGROUND OF THE INVENTION
First, the structure of an individual-spindle-drive type multiple twister will be described with reference to FIG.
5
.
FIG. 5
shows a specific configuration of a single twisting unit TU in an individual-spindle-drive type multiple twister.
In a multiple twister,
80
to
304
twisting units are normally arranged in a line. The twisting unit TU for a single spindle unit comprises a spindle apparatus
1
and a winding apparatus
2
. The spindle apparatus
1
has a stationary disc (not shown in the drawing) and a rotating disc
4
fixed to a spindle shaft
3
. A yarn Y
1
is unwound from a supply package P placed on the stationary disc that maintains its stationary state by means of magnetic attraction, and then enters a tension apparatus
5
, in which it is subjected to a predetermined tension, and the rotating disc
4
located below the stationary disc then rotates at a high speed to move the yarn Y
1
to a balloon guide
7
located above. The yarn Y
1
is twisted twice, that is, it is once between the tension apparatus
5
and the rotating disc
4
, and once between the rotating disc
4
and the balloon guide
7
to provide a twisted yarn Y
2
that has been subjected to double twist. In the embodiment shown in
FIG. 5
, each spindle constitutes an individual-spindle-drive type twisting unit TU comprising a spindle drive source
8
.
On the other hand, the winding apparatus
2
winds up the twisted yarn Y
2
onto a winding package
9
. The twisted yarn Y
2
reaches a traverse guide
13
via guide rollers
10
and
11
, and a feed roller
12
. The twisted yarn Y
2
is traversed by the traverse guide
13
, and wound around the winding package
9
that is supported on a cradle arm
14
, and contacts a contact roller
15
and rotes.
The count of twist per 1 meter in a double twister of this kind is expressed by the following equation.
Count of twist=[rotation speed (rpm) of the rotating disc×2]/yarn speed (meter/minute)
The yarn speed in the above equation depends on the winding speed of the winding apparatus
2
. In addition, the rotation speed of the rotating disc depends on the rotation speed of the spindle shaft
3
of the spindle apparatus
1
. To obtain a specified count of twist, the drive source
8
for the spindle apparatus
1
synchronizes with a drive source
16
for the winding apparatus
2
.
The above single twisting unit TU may use a filament yarn supply package FP as shown in
FIG. 2
or a spun yarn supply package SP as shown in FIG.
4
.
On the other hand, as individual-spindle-drive type multiple twisters M each comprising a combination of twisting units TU, a two-stage type twister MA that is configured to have the twisting units TU having filament yarn supply packages FP disposed in upper and lower stages on both surfaces of a machine body, as shown in
FIGS. 2 and 3
, and a one-stage type twister MB that is configured to have the twisting units TU having the yarn supply packages disposed in one stage on both surfaces of the machine body, as shown in
FIG. 4
are known.
In the individual-spindle-drive type multiple twister M configured as described above, since a large number of twisting units TU are installed in a line and a plurality of TU is installed in a line across working passages WP for operators, the operators cannot monitor the operating conditions longitudinally from the front (the direction from the sheet of
FIG. 2
toward the reader) of the machine body at a distance. It is an object of the present invention to provide an individual-spindle-drive type multiple twister M that enables each spindle to be easily driven and stopped, and that enables the operator to promptly find, from a working passage provided along the machine body, the position of a spindle that is stopped due to a malfunction and take steps to correct the problem.
SUMMARY OF THE INVENTION
To achieve this object, the present invention provides an individual-spindle-drive type multiple twister comprising a large number of twisting units installed in a line to rotate a spindle to twist yarn unwound from a supply package, each of the spindles having a spindle drive source, wherein:
a switching means corresponding to the spindle drive source for each spindle is provided to drive and stop the spindle drive source for each spindle.
Furthermore, the present invention provides an individual-spindle-drive type multiple twister wherein all the switching means for each spindle corresponding to the large number of twisting units installed in a line are mounted on a switch mounting rail having a switch mounting surface, and are arranged at the same or approximately the same height relative to a machine body.
In addition, the present invention provides an individual-spindle-drive type multiple twister wherein the twisting units are arranged in a plurality of upper and lower stages, wherein a switch mounting rail commonly used for the upper and lower stages is provided along the machine body, and wherein switching means for the upper and lower stages are provided close to one another on the switch mounting rail.
Furthermore, the present invention provides an individual-spindle-drive type multiple twister wherein the switch mounting rail is mounted on the machine body via bracket members, and wherein a wiring terminal block is provided on the bracket member.
Moreover, the present invention provides an individual-spindle-drive type multiple twister wherein the switch mounting surface of the switch mounting rail inclines toward the machine body.
The present invention also provides an individual-spindle-drive type multiple twister wherein the switching means for each spindle protrudes from the switch mounting surface of the switch mounting rail.
In addition, the present invention provides an individual-spindle-drive type multiple twister wherein the switching means for each spindle is located rearward from the front end of the machine body.
Finally, the present invention provides an individual-spindle-drive type multiple twister wherein the switching means for each spindle includes a lighting means that lights while the twisting unit is stopped.
REFERENCES:
patent: 3823540 (1974-07-01), Mandl
patent: 4817371 (1989-04-01), Wolf
patent: 4947634 (1990-08-01), Stuwald
patent: 5572859 (1996-11-01), Derichs et al.
patent: 5906092 (1999-05-01), Hattori
patent: 64-68527 (1989-03-01), None
Armstrong,Westerman, Hattori, McLeland & Naughton
Calvert John J.
Fiore Mary K.
Murata Kikai Kabushiki Kaisha
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