False twist processing apparatus

A false twist processing apparatus for applying a predetermined processing to chemical fiber filament yarns supplied from a yarn supply device by passing it through treating devices such as a yarn feed device provided on a frame, a heater, a false twisting member, a take-up device, and the like, wherein the frame is composed of at least two support columns which are independent from each other and stood upright on a floor surface, and the treating devices are mounted on the support columns so that a yarn processing route is formed between the two support columns.

FIELD OF THE INVENTION 
This invention relates a false twist processing apparatus principally for 
chemical fiber filament yarns. 
RELATED ART STATEMENT 
There has been known an apparatus for applying a predetermined false 
twisting process to a yarn supplied from a yarn supply device by passing 
the yarn through a plurality of yarn treating devices provided on a frame 
sideway of said yarn supply device (For example, Japanese Utility Model 
Application Laid-Open No. 21084/1987). 
In the above-described yarn treating devices for the false twist processing 
apparatus, a heater, a cooling plate, a false twisting member (a false 
twisting spindle) and a take-up device are provided in order of processing 
steps, and as the case may be, a second heater for removing torque is 
provided between the false twisting member and the take-up device. 
Since the aforesaid second heater is for removing torque, and therefore, a 
long heater is not required, but a heater (a first heater) arranged at 
upstream of the false twisting member need be relatively long. The reason 
why is that in the case where the yarn speed is increased in an attempt of 
increasing the processing speed of the yarn, the length of the heater need 
be extended to increase contact time between the yarn and the heater in 
order to apply sufficient heating to the yarn. In the aforesaid heater, 
smoke generated during processing is discharged along the heating surface 
thereof, and therefore, normally, the heater is supported vertically or 
with a suitable inclination. However, this increases a mounting height (a 
height of center of gravity) of the heater in line with an increased 
length of the heater itself. 
On the other hand, those which are driven at high speeds and comprise a 
vibrating source among the aforementioned yarn treating devices are mainly 
the false twisting member (spindle for the false twisting member) and the 
take-up device. 
The take-up device is normally provided at a relatively low position on a 
floor because an operator himself need to doff the wound package, and the 
spindle for the false twisting member is often provided thereabove. 
Accordingly, a mechanical vibration induced by the vibration of the take-up 
device itself in the vicinity of a low position on the floor on which the 
take-up device is installed comprises no significant problem but a 
vibration of the spindle and a vibration induced by the transmission of 
the vibration of take-up device in the vicinity of the heater mounted at a 
relatively high level tend to be amplified. The amplified vibration 
induces a looseness in a fastening portion of bolts and nuts or the like 
during a long time of service, resulting in an unexpected trouble, and in 
an occurrence of trouble in processing of yarn. 
OBJECT AND SUMMARY OF THE INVENTION 
It is an object of the present invention to provide a false twist 
processing apparatus whereby transmission of vibrations induced by a false 
twisting member and a take-up device toward a heater can be minimized. 
According to an embodiment of the present invention, there is provided a 
false twist processing apparatus for applying a predetermined processing 
to a yarn supplied from a yarn supply device by passing it through 
treating devices such as a yarn feed device provided on a frame, a heater, 
a twist member, a take-up device, and the like, wherein said frame is 
composed of at least two support columns which are independent from each 
other and stood upright on a floor surface, said treating devices are 
mounted on said support columns so that a yarn processing route is formed 
between said two support columns, and said heater is so mounted on the 
support column as transmission of vibrations of the support column, on 
which the false twisting member and the take-up device are mounted, toward 
the heater is minimized.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
FIG. 1 is a side view of a false twist processing apparatus as a first 
embodiment, showing a right half portion thereof, the whole being 
symmetrical to left and right with a center line indicated at 
dottedcontour lines (CL). A description will be made of the right half 
portion alone. 
Reference numeral 1 designates a known creel which is a yarn supply device 
for supporting a number of yarn supply packages P1. Yarns drawn from the 
yarn supply packages P1 are gathered leftward of the creel through a guide 
pipe not shown and then introduced into treating devices which will be 
mentioned hereinbelow. 
A first support column 2 is stood upright on the floor in close proximity 
of the creel 1, and a second support column 3 is stood upright on the 
floor apart therefrom. Accordingly, since this apparatus is symmetrical to 
left and right, the structure is that as viewed from the side, one support 
column 3 is stood upright, and two support columns 2 and 3 are stood 
upright to left and right, and the creel 1 is arranged externally thereof. 
The frame is constituted by the aforesaid support columns 2 and 3. 
The above-described explanation was made by way of a side view. Actually, a 
suitable number of support columns 2 and 3 corresponding to the length of 
the machine bed are stood upright as viewed in front. 
Reference numerals 4, 5 and 6 denote horizontal beams disposed over the 
full length of the machine bed as viewed from front. 
There is a passage space 7 for an operator between the support columns 2 
and 3 having a width so that a person may pass therethrough. 
The treating devices are mounted in the following order so that a yarn may 
be extended between two support columns 2 and 3. 
That is, the first support column 2 has a first feed roller 8 and a heater 
9 mounted thereon, and the second support column 3 has a cooling plate 11, 
a belt type twist device 12 as a twist member, a second feed roller 13 and 
a take-up device 14 mounted thereon. 15 is a yarn guide. These devices 
will be described hereinafter. 
The heater 9 is secured at 16, substantially at a position of center of 
gravity, to the upper portion of the first support column 2, and the 
cooling plate 11 is secured through a bracket 18 to the end of a 
horizontal beam 17 horizontally extended from the upper portion of the 
second support column 3. No connecting means is present between the lower 
end of the heater 9 and the cooling plate 11, which are completely 
separated. 
A belt type false twisting device 12 is mounted at a front position of a 
reinforcing plate 18 extended sideway from the second support column 3, 
which is a well known construction. The second feed roller 13 is mounted 
on the horizontal beam 6. The take-up device 14 is composed of cradles 19 
for supporting packages P2, friction rollers 21 and traverse devices not 
shown, as well known. 
In the false twist processing apparatus according to this embodiment, a 
yarn Y from the creel 1 is subjected to false twist processing passing 
through said devices in said order and wound as a package P2 on the 
take-up device 14. Vibrations when the take-up device 14 and the false 
twisting member 12 are operated are not transmitted to the first support 
column 2, that is, to the heater 9. 
Next, the second embodiment will be described with reference to FIG. 2. 
In FIG. 2, the creel 1, the first and second support columns 2 and 3 are 
arranged in the same manner as that of the first embodiment, and a passage 
space 7 for an operator is likewise formed between the support columns 2 
and 3. 
Horizontal beams are indicated at 22, 23, 24, 25 and 26. 
In the second embodiment, the treating devices are mounted as described 
below so that a yarn is extended between the two support columns 2 and 3. 
That is, the first support column 2 has first and second feed rollers 27, 
28 and one end of a heater 29 mounted thereon, and the second support 
columns 3 has a cooling plate 31, a belt type false twisting device 32 as 
a false twisting member, a third feed roller 33 and a take-up device 34. 
These devices will be described hereinafter. 
The first and second feed rollers 27 and 28 are mounted on the horizontal 
beams 22 and 23, and the heater 29 is pivoted at 36 at one end thereof on 
a bracket 35 extended from the first support column 2 while the other end 
being free with respect to the first support column 2. 
The cooling plate 31 is fixedly suspended from a support bracket 38 secured 
to the front surface of a reinforcing plate 37 horizontally extended from 
the upper portion of the second support column 3. The end of the cooling 
plate 31 and the lower end of the heater 29 are not connected but the 
lower end of the heater 29 is connected to the end of the support bracket 
38 through a damper device 39 so as to be discontinuous with relative to 
vibrations. 
That is, as shown in FIG. 3, a hard rubber member 41 is bolted at 42 to the 
end of the support bracket 38, and the other end of the rubber member 41 
is secured to a bolt 43 projected from the heater 29. Accordingly, 
approximately half the weight of the heater 29 is supported by the hard 
rubber member 41 of the damper device 39. 
Preferably, the hard rubber member 41 is preferably selected to have 
properties which absorb the number of vibrations generated particularly on 
the side of the take-up device 34 and false twisting member 32. 
Furthermore, the damper device 39 may be constituted by a bolt 44 screwed 
into the heater 29 extending through the end of the support bracket 38 and 
an annular rubber member 45 inserted into the bolt 44, as shown in FIG. 4. 
In this case, the stability of supporting the heater 29 is enhanced, and 
this arrangement is suitable for the case of supporting the heater 29 
having a relatively large weight. 
The supporting position 36 of the heater 29 to the bracket 35 may be of 
approximately the position of center of gravity as in the first 
embodiment. In this case, a resilient member such as a spring, an air 
cushion or the like can be used in place of the rubber member 41 of the 
damper device 39. 
The belt type false twisting device 32 is secured to the lower surface of 
the reinforcing plate 37, and the take-up device 34 is composed of cradles 
46 for supporting packages P2, friction rollers 47 and traverse devices 
not shown, as is well known. 
Also, in the false twist processing apparatus according to the second 
embodiment, similarly to the first embodiment a yarn Y from the creel 1 is 
subjected to false twist processing in the aforesaid order and wound as a 
package P2 on the take-up device 34. Vibrations when the take-up device 34 
and twist member 32 are operated are shut off by the damper device 39 and 
not transmitted to the first support column 2, that is, the heater 29. 
As described above, in the false twist processing apparatus according to 
the present invention, the transmission of vibrations toward the heater in 
which vibrations tend to be amplified can be minimized. Therefore, an 
unexpected trouble resulting from a looseness of a fastening portion or 
the like can be avoided, and an occurrence of trouble in processing yarns 
caused by the vibrations can also be avoided.