JP2003138439A - False twist texturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems that a yarn contact length is influenced with accuracy of parts or adjustment of the parts of a yarn running apparatus or adjustment of heat quantity cannot suitably be carried out when the yarn contact length with a heating unit (a yarn running groove) of a heater can be varied with a feed roller provided on the downstream side of the heater and a yarn guide installed on the upstream side and capable of regulating the position thereof in a double false twist texturing machine. SOLUTION: This double false twist texturing machine is equipped with a contact heater 5 having each yarn running groove 17 formed into an arclike shape for passing each yarn along the groove 17 and heating the yarn and false twisting apparatuses 7 and 7 for imparting false twist to the yarns Y1 and Y2 at positions on the downstream side in the yarn running direction of the heater 5. The double false twist texturing machine is provided with means for changing the yarn contact length capable of changing the contact length of at least the one single yarn Y2 with the yarn running groove 17 of the heater 5 with the yarn Y2 (a guide supporting member 25 and the yarn guide 14) and positioning means (pins 36a, 36b, etc.), of contact points of the yarn Y2 with the yarn running groove 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a false twisting machine used for false twisting of yarns of thermoplastic synthetic fibers such as polyester and polyamide, and more particularly to means for adjusting the heating amount of a yarn heater.

[0002]

2. Description of the Related Art Conventionally, in a drawing false twisting machine,
For false twisting of a yarn, there is one in which the yarn is brought into contact with a heating body of a contact type heater to heat the yarn, and "twisting" is applied by a false twisting device on the downstream side of the heater. In the false twisting process, it is necessary to change the heating amount according to the composition and thickness of the yarn. The thicker the thread, the more heat is required to add "twist". The heating amount of the yarn is changed by adjusting the heating temperature of the heater or changing the traveling speed of the yarn. In particular, when manufacturing a composite yarn by false twisting a plurality of single yarns having different compositions and thicknesses, it is necessary to arrange a heater for each yarn and adjust the heating temperature for each yarn. . When a heater is arranged for each yarn, it is necessary to dispose a heat insulating material between the heaters in order to avoid thermal interference between the heaters arranged in parallel, which leads to an increase in the size of the entire false twisting machine and an increase in cost. .
The false twisting machine is configured by arranging a plurality of false twisting units in which respective devices are arranged in parallel along the yarn traveling path of the yarn to be manufactured. Further, in the contact type heater, if the amount of heat applied to the yarn is changed by changing the traveling speed of the yarn, the traveling speed needs to be relatively increased in order to reduce the amount of heating to the yarn. As the traveling speed of the yarn is increased, the contact resistance with the heating body is increased and fluffing is more likely to occur, resulting in deterioration of the quality of the produced yarn. In addition, when a composite yarn is to be manufactured, the traveling speed of one yarn cannot be changed with respect to the traveling speed of one yarn, and this method makes it impossible to produce a composite yarn. .

The technique of Japanese Utility Model Laid-Open No. 5-72981 makes it possible to change a heating amount for each yarn while heating a plurality of yarns having different compositions and thicknesses by the same heater. In this technique, the yarn is guided by a feed roller provided on the downstream side of the heater and a yarn guide of a yarn hooking device provided on the upstream side of the heater. The yarn running groove formed in the heating element of the heater (in Japanese Utility Model Laid-Open No. 5-72981, the "yarn running portion") is curved in an arc shape so that the central portion is more convex than the both ends. Has been formed. Then, by guiding both ends of the yarn on the opposite convex sides to the yarn traveling groove,
The yarn is pressed against the yarn running groove so that the yarn is heated. The characteristic point of this technique is that the yarn hooking device is configured so that the arrangement position of the yarn guide that guides the yarn at one end side of the heater can be changed, and the guide position of the yarn can be changed. The point is that the contact length with which the yarn contacts the yarn traveling groove is changed. When the guide position of the yarn is changed, the portion where the yarn is pressed against the yarn traveling groove of the heater is changed, and the contact length of the yarn contacting the yarn traveling groove is changed. When the contact length of the yarn is changed, the amount of heat applied to the yarn changes even if the temperature of the heating element and the traveling speed of the yarn are constant. That is, it is possible to change the heating amount for each yarn while using the same heater.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the technique of No. 981, if the contact length of the yarn with the heater is changed, the production accuracy of the member that supports the heater and the yarn guide is affected, and it is difficult to accurately position the contact length of the yarn. When the yarn is brought into full contact with the yarn running groove of the heater, the contact and separation points of the yarn are at both ends of the heating body, and the yarn contact length is accurately positioned. This is because the arrangement of the members that support the heater and the yarn guide allows the yarn to sufficiently contact the heating body, and the contact and separation points do not change. On the other hand, if the thread contact / separation point is set in the middle of the heating element (thread traveling groove), the thread contact / separation point can be accurately positioned at the position required by the manufacturing accuracy and assembly accuracy of the member that supports the heater and the thread guide. Will no longer be positioned. Then, even if the yarn contact length changing means is used to change the yarn contact length, the contact length includes an error, and the amount of heating to the yarn varies among the weights. I will end up.

[0005]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, in claim 1, a contact type heater in which a yarn running heating unit for heating the yarn along the yarn is formed in an arc shape, and a false twisting device for applying false twist to the yarn at a position downstream of the heater in the yarn running direction. In a false twisting machine including
A yarn contact length changing means for changing the contact length between the yarn traveling heating portion of the heater and the yarn, and a positioning means for locating the point of contact and separation of the yarn with respect to the yarn traveling heating portion are provided.

According to a second aspect of the present invention, the contact-type heater includes a plurality of yarn traveling heating units that heat the plurality of single yarns along each of them, and these plurality of yarn traveling heating units are heated by the same heating source. In the false twisting machine, which is configured to be heated, a plurality of single yarns are false-twisted by the same contact heater and the false-twisting device provided for each single yarn, and then the yarns are combined. The yarn contact length changing means and the contact / separation point positioning means are provided for one single yarn.

According to a third aspect of the present invention, the contact point / separation point positioning means can be moved to different positions along the yarn traveling heating section according to the position of the contact point / separation point.

According to a fourth aspect of the present invention, the yarn contact length changing means comprises a yarn guide provided on the yarn traveling path below the heater and a means for changing the installation position of the yarn guide. The guide guides the yarn introduced into the yarn traveling heating unit, and the installation position of the yarn guide is changed by the installation position changing means.
The position of the contact point / separation point of the yarn with respect to the yarn traveling heating unit is changed.

According to a fifth aspect of the present invention, the yarn contact length changing means changes the contact length of the heater with the yarn running heating section on the upstream side in the yarn running direction.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A false twisting machine according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall layout diagram showing the false twisting machine of the first embodiment.
FIG. 3 is a schematic view of a false twist false twisting machine. The false twisting machine of the first embodiment is configured as a combined yarn false twisting machine that produces a single yarn (combination yarn) by combining a plurality of yarns. As shown in FIG. 1, the false twisting machine is composed of multiple false twisting units 30 arranged in parallel in the direction perpendicular to the plane of the drawing. The false twisting twisting unit 30 is a device that heat-processes the two yarns Y1 and Y2 drawn out from the two-winding yarn-feeding packages 3A and 3B, respectively, and then double-twists them to produce one finished yarn. is there. FIG. 2 (a) is a schematic diagram showing the configuration of a false twisting twisting machine for producing a combination yarn, in which two yarns are respectively heated and then false twisted, and then mixed. It is shown as a single thread.

As shown in FIGS. 2A and 1, the yarn Y1 is drawn by the first feed roller 4, and the yarn Y2 is drawn by another first feed roller 27. The false twisting unit 30 is provided with first feed rollers 4 and 27 for each yarn, and each yarn is introduced into the primary heater 5 by one of the feed rollers. The yarn Y1 is first twisted from a first feed roller 4 through a yarn traveling groove 17 (described later) of the primary heater 5 and a cooling plate 6 in that order, and then false twisted by a nip twister 7 as a false twisting device. Further, the yarn Y2 is passed through another yarn feed groove 27 of the primary heater 5 and another cooling plate 6 in order from another first feed roller 27, and is then false twisted by a nip twister 7 as a false twisting device.

The false twisting unit 30 is provided with two nip twisters 7, which are arranged side by side in the direction perpendicular to the plane of the drawing in FIG. 1, and the yarns Y1 and Y2 are temporarily twisted by different nip twisters 7, respectively. Twisted. The nip twister 7 is provided with a pair of intersecting belts, and sandwiches the yarn between the both belts to give "twist" and "feed". "Twist" formed by this nip twister 7
Propagates to the first feed roller 4, is thermally fixed by the primary heater 5, and is cooled by the cooling plate 6. That is, the upstream side of the nip twister 7 is the twisting side, and the downstream side is the untwisting side.

The false-twisted yarns Y1 and Y2 are combined into a single yarn Y3 by a yarn combining device having a yarn guide and an air nozzle 28, and pass through the second feed roller 8. Alternatively, another second feed roller 8 may be provided in the false twisting twisting unit 30, and the yarns Y1 and Y2 may be passed through the different second feed rollers 8 and then combined by the air nozzle 28. Downstream of the second feed roller 8, the combined yarn Y3 is heated again by the secondary heater 9, passes through the third feed roller 10, and passes through the oiling device 1
After being subjected to the oiling treatment of No. 5, it is wound on the winding package 12. As described above, the yarn traveling path from the yarn supplying package 3 to the winding package 12 is formed.

Next, the structure of the primary heater 5 will be described with reference to FIGS. FIG. 3 is a cross-sectional view of the primary heater 5 seen from a direction perpendicular to the paper surface, and FIG.
FIG. 3 is a cross-sectional view of the yarn as viewed from the rear of the yarn traveling. The primary heater 5 is a contact type heater, and as shown in FIG. 3, a heating body (box body) 22 is housed in a heat retaining cover 21 to which a lid 29 is openably and closably attached. The heating element 22 is formed by sheet metal processing of stainless steel, is configured to be heated by the Dowsome vapor heating method, and is filled with a heating medium liquid serving as a heating source as a heating medium vapor 24. 27 is a heater element. Lid 2 of heating element 22
On the outer surface on the 9 side, a yarn running groove 17 is formed as a yarn running heating part for heating the yarn along the yarn, and is formed in a bow shape along the running direction of the yarns Y1 and Y2. The central part is convex. As shown in FIG. 4, four yarn running grooves 17 are formed in the heating body 22, and one primary heater 5 also serves as a heating means for the two false twisting units 30. One false twist unit 30 combines two single yarns. The yarns Y1 and Y2 are introduced from one end side in the longitudinal direction of the primary heater 5 and sent out from the other end side. Figure 1
In the disposition of the false twist unit 30 shown in (1), the lower side of the primary heater 5 is the introduction side end 5a, and the upper side is the delivery side end 5b.

The yarns Y1 and Y2 travel at two locations, an introduction side (upstream side in the yarn traveling direction) of the primary heater 5 and a delivery side, by being guided by a yarn guide described later. Therefore, the yarns Y1 and Y2 introduced into the primary heater 5 are pressed against the yarn traveling groove 17 having an arc shape and travel while contacting the heating body 22.

The yarns Y1 and Y2 are respectively the primary heater 5
The yarn guide 32a of the yarn hooking guide arm 32 provided in the yarn hooking device 16 guides the yarn guide 32a on the downstream side in the yarn running direction, and the yarn guide 14 provided in the yarn contact length changing means of the present invention on the upstream side in the yarn running direction. Be guided. In the first and second embodiments (described later), as shown in FIGS. 1 and 7 (described later), the delivery side (downstream side in the yarn traveling direction) of the primary heater 5 is located at a higher position than the introduction side. The primary heater 5 is arranged so that Therefore, the yarn guide 32a provided in the yarn hooking device 16 guides the yarn on the downstream side of the primary heater 5 in the yarn traveling direction. On the other hand, when the primary heater 5 is arranged so that the delivery side (downstream side in the yarn traveling direction) of the primary heater 5 is positioned lower than the introduction side (for example, the primary heater 5 is the cooling plate 6). The thread guide 3 provided on the thread hooking device 16 when the thread guide 3 is arranged on a substantially straight line.
The yarn is guided by 2a on the upstream side of the primary heater 5 in the yarn traveling direction. This is the thread hooking device 1 as described later.
This is for guiding the yarns Y1 and Y2 to the upper end of the primary heater 5 which is located at a position higher than the height of the human body by using 6.
Next, these guide members will be described.

A yarn hooking device 16 for guiding the yarns Y1 and Y2 on the delivery side of the primary heater 5 will be described with reference to FIG. The primary heater 5 is provided with two yarn hooking devices so that the yarns Y1 and Y2 can follow the yarn running groove 17. One thread hooking device 16 has two thread guides 32
In the yarn running groove 17 provided with a and four provided for each primary heater 5, two yarn hooking devices 16 provided for each primary heater 5 can guide the yarn as a whole. . The thread hooking device 16 is configured as an air cylinder as follows. Cylinder 18 along the primary heater 5
Is provided, and the cylinder 18 has a built-in piston (not shown) movable along the heater 5. Cylinder 1
Reference numeral 8 denotes a hermetically sealed structure, in which the internal piston is moved by the pressure of air supplied from an air pump (not shown). A slider 20 made of a magnetic material is externally fitted to the cylinder 18 and arranged outside the piston. The piston is also a magnetic material, and one of the piston and the slider 20 is made of a paramagnetic material so that they are attracted to each other by a magnetic force. Then, while the cylinder 18 has a structure for maintaining airtightness, the slider is moved by the slider 20 by moving the piston by the pressure of air.
I try to move along.

The slider 20 includes a thread hooking guide arm 3
1, 32 are rotatably provided. Both thread hooking guide arms 31 and 32 are fixed to each other, and are integrally rotatable with respect to the slider 20. Slider 20
When the thread reaches the upper end position of the cylinder 18, both thread hooking guide arms 31 and 32 rotate to move the thread hooking guide arm 3
1 extends to the opposite primary heater 5 side (upper left side in FIGS. 1 and 3), and the thread hooking guide arm 32 extends to the primary heater 5 side. This is provided in the thread hooking device 16,
It is an operation of the following configuration. The thread hooking guide arm 32 is provided with a cam follower 33, and the cylinder 1
A guide plate 13 is fixedly provided on the upper end of the guide 8, and a cam groove 13a for guiding the cam follower 33 is formed in the guide plate 13. Then, as the cylinder 20 moves up and down, the cam follower 33 is guided by the cam groove 13a so that the both thread hooking guide arms 31 and 32 rotate. Since the thread hooking guide arms 31 and 32 are rotatable with respect to the slider 20, the thread hooking guide arms 31 and 32 do not come into contact with the protective cover 21 when the slider 20 moves up and down.

Thread guides 31a and 32a for hooking the threads Y1 and Y2 are provided on the two thread hooking guide arms 31 and 32, respectively.
Is provided. The thread hooking guide arm 32 is an L-shaped flat plate member, and the cam follower 33 is provided on one side surface thereof.
And a thread guide 32a is provided on the other side surface.
Since the thread guides 31a and 32a are guide members for guiding the threads Y1 and Y2, they are provided on the same side (opposite to the cam follower 33) with respect to the thread hooking guide arm 31. Here, the yarn guide 32a guides the yarns Y1 and Y2 to the yarn traveling groove 17
It is configured on one side (delivery side) of a guide member for guiding along the line.

At the beginning of the processing of the yarns Y1 and Y2, the slider 20 is lowered to the lower end position of the cylinder 18 (shown by the chain double-dashed line in FIG. 3), and the yarns Y1 and Y2 are guided to the yarn guides 31a and 32.
hook on a. At this time, the lid 29 attached to the heat insulating cover 21 of the primary heater 5 is left open, and the slider 20 is raised while the yarns Y1 and Y2 are guided along the yarn running groove 17. Then, when the slider 20 reaches the upper end position of the cylinder 18, the lid 29 of the heat insulating cover 21 is closed. As described above, the yarns Y1 and Y2 are guided to the upper end of the primary heater 5 located at a position higher than the height of the human, and the yarn Y1 and Y2 are guided.
Y2 is arranged along the yarn traveling groove 17.

The tip of the thread hooking guide arm 32 (thread guide 32a) is positioned inside the heating element 22. Assuming that the central portion of the bow-shaped thread running groove 17 is at the position where the convex protrusion amount is the maximum, the exit of the thread running groove (threads Y1, Y2
On the output side), the amount of protrusion is zero. If the tip of the thread hooking guide arm 32 is arranged inside the heating body 22 with respect to the outlet while keeping the height position fixed, the tip will be arranged on the side opposite to the projecting side. That is, the yarns Y1 and Y2 delivered from the delivery-side end 5b always come into contact with the delivery-side end of the yarn running groove 17.

In the false twist unit 30, the yarn Y1 is introduced from the first feed roller 4 directly into the primary heater 5, as shown in FIG. As for the yarn Y2, FIG.
And, as shown in FIG. 3, it is introduced from the first feed roller 27 to the primary heater 5 via a yarn contact length changing means (described later).

A yarn contact length changing means for guiding the yarn Y2 on the introduction side of the primary heater 5 will be described with reference to FIGS. 1, 3 and 5. FIG. 5 is a cross-sectional view showing the guide support member 25 as seen from the yarn traveling direction. Introductory end 5a of the primary heater 5
Upstream of the thread guide 14 and the guide support member 25.
Is provided. The guide support member 25 is the thread guide 1
4 is a means for changing the installation position, and the thread guide 14 is attached so that the installation position can be changed. In addition, the thread guide 14
Is the yarn Y introduced into the yarn traveling groove 17 which is the yarn traveling heating unit.
Guide 2 Specifically, as shown in FIG. 5, a plurality of mounting holes 26a, 26b ... For mounting the thread guide 14 are formed in the guide supporting member 25 which is a plate-shaped member. The mounting holes 26 are formed at a plurality of locations from the opposite protruding side (right side in FIGS. 1, 3, and 5) of the heating element 22 toward the protruding side. By mounting the thread guide 14 in any one of these mounting holes 26a, 26b, ..., The position for guiding the threads Y1, Y2 can be changed on the introduction side to the primary heater 5. .

With the above configuration, which mounting hole 26a.2
Depending on whether the thread guide 14 is attached to 6b ...
The length of contact of No. 2 with the yarn running groove 17 formed in the heating body 22 changes. As described above, the heating body 22 is formed in an arc shape, and the convex outer surface of the heating body 22 (the yarn running groove 1
The yarn Y2 runs on the side where 7) is located. In addition, yarn Y
On the delivery side of the primary heater 5, 2 always passes through the yarn guide 32a provided on the yarn hooking guide arm 32. Therefore, as the portion of the introduction side end 5a that guides the yarn Y2 is moved from the non-projecting side of the heating body 22 toward the projecting side, the yarn Y2
The length of contact between the yarn and the yarn traveling groove 17 is reduced. This is because the heating element 22 in which the yarn running groove 17 is formed is formed in an arc shape, and therefore, by changing the positions of guiding the yarn Y2 at both ends of the primary heater 5 on the delivery side and the introduction side, Y2
This is because the length in which the yarn is pressed against the yarn traveling groove 17 changes. The length by which the yarn Y2 is pressed against the yarn traveling groove 17 is the yarn contact length in which the yarn Y2 contacts the yarn traveling groove 17. The mounting hole 26a is formed on the farthest protruding side of the heating body 22, and mounting holes 26b, 26c, ... Are formed toward the protruding side. Therefore, when the processing of the yarn Y2 is started, the mounting hole 2
When the thread guide 14 is attached to 6a, the thread traveling groove 1 of the thread Y2 is
The contact length with 7 becomes maximum. Mounting holes 26a ・ 26b
The starting points of thread contact when the thread guides 14 are attached to each of ... Are shown by Ta.Tb ... in FIG. The end point of the yarn contact is the end of the yarn traveling groove 17 located at the upper end of the heating body 22. The speed at which the yarn Y2 is run, that is, the feed rollers 4/8/1
If the rotation speed such as 0 is not changed, the longer the contact length between the yarn Y2 and the yarn traveling groove 17, the larger the amount of heating applied to the yarn Y2.

In the present embodiment, the guide support member 25 is fixed to a support frame 38 that supports each device provided in the false twist unit 30. More specifically, the guide support member 25 includes the bracket 3 fixed to the support frame 38.
It is fixed to 9 by bolting. Guide support member 25
Is an L-shaped member in which two flat surfaces 25a and 25b are orthogonal to each other, and a hole for inserting a bolt is formed in one flat surface 25a, and the mounting holes 26a, 26b, and
.. is formed. A hole for inserting a bolt is also formed in the bracket 39. The structure for supporting the guide supporting member 25 for guiding the yarn Y2 is not limited to this structure, and any other supporting structure can be used as long as it is fixed relative to the primary heater 5. It may be a supporting structure. Further, the yarn Y1 not provided with the yarn contact length changing means comes into contact over the entire length of the yarn traveling groove 17 of the primary heater 5.

When at least one of the material and the thickness is different for both yarns Y1 and Y2, different heating amounts are required in the false twisting process, and it is necessary to change the heating amount for each yarn. In the first embodiment, one yarn Y
The amount of heat applied to 1 is changed by adjusting the temperature of the primary heater 5, and the other yarn Y2 is changed in amount of heat applied by the yarn contact length changing means. Where the yarn Y1
Is processed by heating with a higher heating amount than the yarn Y2, and the yarn Y1
The yarn contact length changing means is not provided in the above, and the yarn contact groove 17 is maximally contacted with the yarn traveling groove 17. That is, the yarn contact length is the maximum. Further, since the yarn Y2 on the low heating side uses the heater 5 having a temperature matched with the yarn Y1, the contact length with the heating body 22 is shortened by the yarn contact length changing means, and the heater 5 is used.
The amount of heat applied is changed without adjusting the temperature. Further, instead of the configuration of this embodiment, the guide support member 25 may be provided for each yarn, and the heating amount adjustment for each yarn may be performed by the yarn contact length changing means.

Next, the contact / separation point positioning means for identifying the thread contact length by supplementing the thread contact length changing means will be described with reference to FIGS. 3 and 6. FIG. 6 is a trihedral view showing the contact point / separation point positioning means. In particular, FIG. 6A is a view of the guide 35 as viewed in the direction of arrow A in FIG. 1, and FIG. 6B is a view of the yarn guide 35 seen from a direction perpendicular to the paper surface of FIG.
(C) is a view showing the yarn guide 35 as viewed from the direction of arrow B in FIG. 1.

The heating element 22 of the primary heater 5 is provided with contact / separation point positioning means as means for specifying the yarn contact length changed by the yarn contact length changing means. The yarn contact length changing device including the yarn guide 14 attached to the guide support member 25 does not specify the yarn contact length of the yarn Y2 with respect to the yarn traveling groove 17, and the yarn precision of each part of the false twist unit 30 is adjusted and the yarn contact length is adjusted. The contact length is likely to deviate from the required length. This is prevented by the contact / separation point positioning means.

The contact / separation point positioning means includes pins 36a, 36b, ... Standing on the heating body 22 by welding along the forming direction of the yarn running groove 17, and a yarn guide 35 attached to the pins. Consists of. As shown in FIG. 6 (a), the pins 36a, 36b, ... Are provided between the yarn running grooves 17, 17. Further, a screw is formed at the tip portion (on the side opposite to the heating body 22) of the pins 36a, 36b, ..., The thread guide 35 is attached to the pin by a wing nut 37 and fixed. Therefore, the contact / separation point positioning means has a simple structure, high durability, and low manufacturing cost.

As shown in FIGS. 6 (b) and 6 (c), the thread guide 35 is a support plate 35 formed by bending a flat plate member into an L shape.
c, an upper plate 35b fixed to the support plate 35c, and guide portions 35d and 35d in which guide grooves 35a are formed. The support plate 35c includes a fork-shaped flat plate portion extending in the arrow A direction and a flat plate portion extending in the arrow B direction when the thread guide 35 is attached. Support plate 35c
By forming a fork-shaped flat plate portion on the
The yarn guide 35 is securely fixed by sufficiently contacting the crests (projections) of the heating body 22 whose valleys are 7 · 17. The upper plate 35b is a support plate 35c.
It is provided so as to be parallel to the fork-shaped flat plate portion. Further, the fork-shaped flat plate portion of the support plate 35c and the lower plate 3
Pin holes overlapping with 5c are formed respectively in the direction of arrow B, and the pin holes are inserted into any one of the pins 36a, 36b ...

As shown in FIG. 6 (a), a pair of guide portions 35d and 35d are provided on the flat plate portion of the support plate 35c extending in the direction of the arrow B with the pin interposed therebetween as seen from the direction of the arrow A. A guide groove 35a is formed in the guide portion 35d. The guide groove 35a is provided on the opening side (the thread hooking device 16
Side) and is thicker on the back side (heating body 22 side) and formed to have a circular shape so that the yarn Y2 inserted into the guide groove 35a does not fall off from the back side of the guide groove 35a. Has been done.

The pins 36a, 36b, ... Are the thread guides 3.
As shown in FIG. 3, it is a means for changing the arrangement position of the heating element 5, and is provided at a plurality of positions of the heating element 22 along the yarn running groove 17. The fixed positions of the pins 36a, 36b, ... Are indicated by guide positions Ga, Gb, ... In FIG. The pins 36a, 36b, ... Are attached to the mounting holes 26a, which are provided in the guide supporting member 25 which constitutes the thread contact length changing means.
26b ... For example, when the thread guide 14 is attached to the attachment hole 26a, the thread guide 35 is provided on the pin 36a to guide the thread Y2. As shown in FIG.
The guide positions Ga, Gb ... By the thread guide 35 are the starting points Ta, Ta ...
On the other hand, each is provided on the downstream side. Thread guide 3
Since the inner side of the guide groove 35a of No. 5 is separated from the yarn traveling groove 17 in the arrow B direction, it is necessary to increase the distance in the yarn traveling direction until the yarn Y2 is along the yarn traveling groove 17. This distance is the starting point Ta from the guide positions Ga, Gb ...
-Distance to Tb ... With this configuration, when the yarn Y2 comes into contact with the yarn traveling groove 17, the yarn guide 35 guides the yarn Y2 again immediately before the yarn contact starts.
The yarn is heated to the specified yarn contact length.

As described above, the yarn on the side where the yarn contact length is changed is guided at the appropriate position by the contact / separation point positioning means. That is, the yarn Y2, whose yarn contact length is adjusted by the yarn contact length changing means, is guided at the guide position of the thread guide 35 of the contact / separation point positioning means at the guide position corresponding to the mounting hole for attaching the thread guide 14 to the guide support member 25. It is guided by the groove 35a.

Further, as shown in FIG. 2 (b), both the first feed rollers 4 and 27 are used in each yarn, and a pin heater (preheater) 34 provided between both rollers 4 and 27 is used. It is also possible to heat and draw to produce a special yarn. The special yarn is called thick and thin yarn, and is a processed yarn that causes random uneven dyeing when dyed. The amount of heating by the pin heater 34 is smaller than that of the primary heater 5, and the amount of stretching by heating is also small. In the configuration shown in FIG. 2B, both yarns Y1
Although Y2 is heated by the pin heater 34, only one of them may be heated by the pin heater 34. The yarn on the side not heated by the pin heater 34 passes through only one of the first feed rollers 4 and 27, as in the example (second embodiment) shown in FIG. 2A.

In the first embodiment, four rows of recesses are formed on the convex outer surface of the heating element 22 to form four rows of thread running grooves 17, and two thread running grooves 17 of them are used for joining. A yarn is manufactured so that two primary yarns are produced for each primary heater 5. In addition, two rows of recesses are formed on the convex outer surface of the heating body 22 so that two yarn running grooves 17 are formed so that one combined yarn is produced for each primary heater 5. Good. Alternatively, recesses may be formed in three or more places in the heating body to form yarn running grooves, and a combined yarn may be manufactured from three or more yarns. By configuring the heating element in this way, three or more materials and yarns with different thicknesses are simultaneously heated at different heating amounts and false twisted, and three or more yarns are combined to form one yarn. It is possible to produce.

As described above, the yarn contact length changing means and the contact / separation point changing means are applied to a false twist false twisting machine, and a plurality of yarns Y1 and Y2 are heated by the same contact heater 5. At the same time, the heating amount can be changed for each of the yarns Y1 and Y2. By changing the mounting position of the yarn guide 14 on the guide support member 25, the length of contact of the yarn with the heating body 22 of the primary heater 5 can be changed. Further, the yarn contact length can be specified by changing the attaching position of the yarn guide 35 to the pins 36a, 36b, ... Corresponding to the attaching position of the yarn guide 14. Therefore, it is possible to process yarns having different materials and different thicknesses under appropriate heating conditions and to make the heating amount at that time accurate. In addition, since the same contact type heater 5 can heat a plurality of yarns with different heating amounts, it is not necessary to prepare a plurality of primary heaters 5 for adjusting the heating amount for each yarn. In addition, a plurality of primary heaters (see FIG.
When lining up (along the direction perpendicular to the paper surface of), it is necessary to prevent the thermal effect of the adjacent heater with a heat insulating material, etc.
One primary heater may be provided for each false twisting unit 30. That is, the manufacturing cost of the false twisting machine can be reduced. Therefore, in the production of the compound yarn, while maintaining the compactness of the entire device to the same extent as that of the false twisting machine for single yarn, without increasing the cost, it is not limited to the conditions of the heating amount, etc. The range can be greatly expanded.

Next, a false twisting machine according to the second embodiment of the present invention will be described with reference to FIG. FIG. 7 is an overall layout diagram showing the false twisting machine of the second embodiment. Also,
In the following, parts using the same members as those of the false twist unit 30 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. The false twisting machine of the second embodiment is a false twisting machine that produces a single yarn, and as shown in FIG. 7, is composed of a plurality of false twisting units 1 arranged in a direction perpendicular to the plane of the drawing. The false twist unit 1 is a device for producing a textured yarn by thermally processing a yarn (hereinafter referred to as a yarn) Y drawn from a single yarn supply package 3. Each false twist unit 1 has a creel stand 2
It is equipped with a first feed roller 4 for drawing the yarn Y from the yarn feeding package 3 supported by. The yarn Y passes through the first feed roller 4, the primary heater 50, and the cooling plate 6 in that order, and is then false twisted by a nip twister 7 as a false twisting device.

The false-twisted yarn Y passes through the second feed roller 8 and is heated again by the secondary heater 9. The reheated yarn Y passes through the third feed roller 10 and is subjected to an oiling process by the oiling device 15, and then the winding device 2
The roll 3 is wound into the winding package 12. In the winding device 23, the winding devices of the three false twisting units 1 are arranged in three layers. As described above, the yarn traveling path from the yarn supplying package 3 to the winding package 12 is formed.

The primary heater 50 is provided with a heating element having two rows of yarn traveling grooves instead of the heating element 22 having four rows of yarn traveling grooves 17. The primary heater 50 is configured to be able to simultaneously heat two threads. Primary heater 5
Since the yarn running grooves 17 are provided in two rows at 0, one primary heater 50 also serves as the heating means of the two false twist units 1. Here, the yarn Y is arranged along the yarn traveling groove 17 by using the yarn hooking device 16. The yarn hooking device 16 is provided with two pairs of yarn hooking guide arms 31 and 32 and is configured to be able to guide two yarns.

On the other hand, the guide supporting member 25 constituting the yarn contact length changing means is also provided in the false twist unit 1 on the introduction side of the primary heater 50. In addition, the contact / separation point positioning means guides the user at an appropriate position. That is, the yarn Y, whose yarn contact length is adjusted by the yarn contact length changing means, is guided at the guide position of the thread guide 35 of the contact / separation point positioning means at the guide position corresponding to the mounting hole for attaching the thread guide 14 to the guide support member 25. It is guided by the groove 35a.

As described above, the yarn guide 14 and the guide support member 25, which are yarn contact length changing means, are provided on the introduction side of the primary heater 50, and the yarn Y to the heating body 22 of the contact-type primary heater 50 is provided. The contact length of can be changed.
In addition, the pins 36a, 36b, ...
The thread guide 35 is provided so that the point of contact and separation of the thread is specified, and the thread contact length is specified. Therefore, the amount of heat applied to the yarn Y can be changed according to the thickness (or material) of the yarn Y. In addition, it is possible to adjust the heating amount of the yarn Y by merely providing the yarn contact length changing means and the contact point separating means, and it is possible to specify the heating amount by specifying the yarn contact length. Therefore, the structure is simple, the durability is high, the manufacturing cost is low, and at the same time, the heating amount adjustment is accurate. Further, on the guide support member 25 provided on the primary heater 50,
Simply changing the thread guide 14 that guides the thread Y
Since it is possible to change the amount of heat applied to the yarn, it is not necessary to change (adjust) the heating temperature of the primary heater 50 according to the thickness (material) of the yarn Y. Therefore, temperature control is also easy. Further, the traveling speed of the yarn Y can be made constant regardless of the thickness (material) of the yarn Y. Therefore, the yarn Y
When is thin (when the thermal conductivity is good), it is not necessary to increase the running speed in order to reduce the heating time. When the traveling speed is increased, the effect of friction with the yarn traveling groove 17 is increased and the yarn Y
However, such a problem can be prevented.

[0042]

According to the first aspect of the present invention, a contact-type heater having an arc-shaped yarn traveling heating section for heating the yarn along the yarn,
In a false twisting machine comprising a false twisting device for applying false twist to a yarn at a position downstream of the heater in the yarn running direction, a yarn contact capable of changing a contact length between the yarn running heating portion of the heater and the yarn. Since the length changing means and the positioning means of the contact point / separation point of the yarn with respect to the yarn running heating part are provided, the thickness (or material) of the yarn
The amount of heat applied to the yarn can be changed in accordance with. In particular, it is possible to adjust the heating amount to the yarn by only adding the yarn contact length changing means and the contact / separation point changing means for guiding the traveling route of the yarn, and further, to specify the heating amount by specifying the yarn contact length. Can be specified. Therefore, the structure is simple, the durability is high, the manufacturing cost is low, and at the same time,
Accurate adjustment of heating amount.

According to a second aspect of the present invention, the contact-type heater includes a plurality of yarn traveling heating units for heating the plurality of single yarns along the respective yarns, and the plurality of yarn traveling heating units are provided with the same heating source. In the false twisting machine for twisting, a plurality of single yarns are false twisted with the same contact heater and the false twisting device provided for each single yarn, and then the yarns are combined. Since the yarn contact length changing means and the contact / separation point positioning means are provided for at least one single yarn, yarns having different materials and thicknesses are processed under appropriate heating conditions and The heating amount can be made accurate. In addition, with the same contact heater,
Since a plurality of yarns can be heated with different heating amounts, it is not necessary to prepare a plurality of primary heaters for adjusting the heating amount for each yarn. In addition, when a plurality of primary heaters are installed side by side, it is necessary to prevent the thermal influence of the adjacent heaters with a heat insulating material or the like.
One primary heater may be provided for each false twisting unit. That is, the manufacturing cost of the false twisting machine can be reduced.
Therefore, in the production of the compound yarn, while maintaining the compactness of the entire device to the same extent as that of the false twisting machine for single yarn, without increasing the cost, it is not limited to the conditions of the heating amount, etc. The range can be greatly expanded.

According to a third aspect of the present invention, the contact point / separation point positioning means can be moved to different positions along the yarn traveling heating section according to the position of the contact point / separation point. When the yarn contact length to the portion is changed, the positioning is reliably performed, and the heating amount can be specified even when different heating amounts are applied to the yarn.

According to a fourth aspect of the present invention, the yarn contact length changing means comprises a yarn guide provided on the yarn traveling path below the heater and a means for changing the installation position of the yarn guide. By the yarn guide guiding the yarn introduced into the yarn traveling heating section, and by changing the installation position of the yarn guide by the installation position changing means,
Since the position of the contact point / separation point of the yarn with respect to the yarn traveling heating section is changed, the structure of the yarn contact length changing means itself is simple and has high durability, and the manufacturing cost is also low.

According to a fifth aspect of the present invention, the yarn contact length changing means changes the contact length of the heater with the yarn running heating section on the upstream side in the yarn running direction. It is less susceptible to ballooning due to twist propagation than when it is placed in. Therefore, there is no uneven heating of the yarn.

[Brief description of drawings]

FIG. 1 is an overall layout diagram showing a false twisting machine according to a first embodiment.

FIG. 2 is a schematic view of a false twisting machine for compound yarn.

FIG. 3 is a cross-sectional view of the primary heater 5 as seen from a direction perpendicular to the paper surface.

FIG. 4 is a cross-sectional view of the heating element 22 as seen from the rear of the yarn running direction.

5 is a cross-sectional view showing a guide support member 25 as seen from the yarn traveling direction. FIG.

FIG. 6 is a trihedral view showing a contact / separation point positioning means.

FIG. 7 is an overall layout diagram showing a false twisting machine according to a second embodiment.

[Explanation of symbols]

1/30 False Twisting Unit 5/50 Primary Heater 7 False Twisting Device 14 Thread Guide (Yarn Contact Length Changing Means) 17 Thread Traveling Groove 22 Heater 25 Guide Support Member (Yarn Contact Length Changing Means, Especially Thread Guide 14 Installation Position) Changing means) 35 Thread guide (contact / separation point changing means) 36a / 36b ... Pin (contact / separation point changing means)

Claims (5)

[Claims] 1. A contact-type heater having an arc-shaped yarn traveling heating portion for heating the yarn along the yarn, and a false twisting device for imparting false twist to the yarn at a position downstream of the heater in the yarn traveling direction. In the false twisting machine, a yarn contact length changing means for changing the contact length between the yarn running heating portion of the heater and the yarn, and a means for positioning a yarn contact / separation point with respect to the yarn running heating portion are provided. A false twisting machine characterized in that 2. The contact type heater is provided with a plurality of yarn running heating units for heating along a plurality of single yarns, and the plurality of yarn running heating units are heated by the same heating source. , A plurality of single yarns are false-twisted by the same contact heater and the false-twisting device provided for each single yarn. The false twisting machine according to claim 1, wherein the yarn contact length changing means and the contact / separation point positioning means are provided for the yarn. 3. The contact / separation point positioning means is capable of moving to different positions along the yarn traveling heating section in accordance with the position of the contact / separation point. False twisting machine described in. 4. The yarn contact length changing means comprises a yarn guide provided below the heater on a yarn traveling path and a means for changing the installation position of the yarn guide, and the yarn guide is the yarn guide. The position of the yarn contacting / separating point with respect to the yarn traveling heating unit is changed by guiding the yarn introduced into the traveling heating unit and changing the installation position of the yarn guide by the installation position changing unit. The false twisting machine according to any one of claims 1 to 3, characterized in that. 5. The yarn contact length changing means changes the contact length of the heater with the yarn running heating section on the upstream side in the yarn running direction, according to any one of claims 1 to 4. False twisting machine described in.