JPH10317237A - Pretwisting false-twist machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stretchable textured yarn by placing feed rollers for nipping and delivering a yarn interposing a heater unit and a false-twisting unit between the rollers and false-twisting the yarn simultaneously with heat- treatment. SOLUTION: This false-twist machine is provided with a double twister unit D, a heater unit H, a false-twisting unit T, a winding unit W and feed rollers for nipping and delivering a yarn. The rollers are positioned in a manner to place the heater unit H and the false-twisting unit T between the rollers. The feeding speed of each feed roller is detected and the over-feed ratio is maintained at the optimum level by a controlling means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pre-twisting false twisting machine for false-twisting a yarn and heat-treating the false-twisted yarn to produce a stretched processed yarn.

[0002]

2. Description of the Related Art Conventionally, yarns drawn from a double twister unit are subjected to false twisting by a false twisting unit, and heat treatment is performed by a heater unit disposed between the double twister unit and the false twisting unit. 2. Description of the Related Art A pre-twisting false twisting machine for producing a stretched processed yarn is known. In such a pre-twisting false twisting machine, a yarn is formed, and a radial ridge or the like is formed on an opposite surface. A feed roller is used, which is sandwiched between a pair of dish-shaped disks and feeds out the yarn. To this feed roller, power is transmitted from a drive shaft of a friction roller constituting a winding unit via a belt, and a power transmission pulley is replaced with one having a different diameter to change a feed speed. I have.

[0003]

In the conventional twisting false twisting machine described above, a pair of dish-shaped discs that sandwich a yarn and feed it out are used as feed rollers. In the sandwiching format,
When the number of twists added to the yarn increases, the yarn itself also becomes round, and in addition to being easily slipped, the twist moves over the dish-shaped disk, and the function as the twist stopping means is impaired, There is a problem that twisted unevenness occurs in the processed yarn.

[0004] As another problem, there is a problem of affecting the yarn quality when the rotation speed of the feed roller is not appropriate. Since the conventional twisting false twisting machine detects the yarn speed from the rotation of the friction roller in the winding unit, for example, even if the rotation speed of the feed roller changes due to the deterioration of the belt described above,
There has been only a method of judging the abnormality of the overfeed rate and the abnormality of the number of twists due to the quality of the wound yarn.

[0005] An object of the present invention is to solve the problems of the conventional twisting false twisting machine as described above and to provide a false twisting twisting machine capable of accurately controlling twisting.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly provides a first twist false twisting process comprising a double twister unit, a heater unit, a false twist unit, and a winding unit. A feed roller that feeds the yarn while nipping the yarn, sandwiching the heater unit and the false twisting unit. Second, the feed roller is constituted by a roller and an endless belt, The yarn is nipped and sent out by a roller and an endless belt.
This is a pre-twisting false twisting machine including a double twister unit, a heater unit, a false twisting unit, and a winding unit, and includes a feed roller that nips and feeds the yarn between the heater unit and the false twisting unit. In addition, a management means for detecting the feed speed of each feed roller and maintaining an appropriate overfeed rate is provided.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS D is a double twister unit, in which a yarn y pulled out from a yarn supply package d1 is inserted into a tensor member d2 and then attached to a spindle d4 rotated by a drive belt d3. Disk d
5 is passed through a balloon guide g1 disposed above through a through hole d5 'drilled in 5. The yarn y twisted by the double twister unit D is a first feed roller F1 constituted by a roller f1 and an endless belt f3 stretched between a pair of rollers f2 as shown in FIG. Is nipped by the above-mentioned roller f1 and the endless belt f3, and then sent out.
It is supplied to the heater unit H. Heater unit H
Is twisted by the false twisting unit T via the yarn guide g3. The yarn y coming out of the false twisting unit T is nipped by the endless belt f3 and the roller f1 of the second feed roller F2 having the same configuration as the first feed roller F1 via the yarn guide g4, and is sent out and wound. It is sent to the unit W. In the winding unit W, the yarn y is traversed by a traverse guide (not shown), and
Is wound around the package w2 that is driven to rotate.

FIG. 3 shows a false twist unit T as an example.
It is shown. t1 is a spinner having a peg t1 ′ at a forked portion, and the spinner t1 is pressed and held by a magnet t4 against a driving roller t2 and a driven roller t3 that are in contact with each other. t5 is a bearing that supports the rotating shaft t6 of the drive roller t2, and t5
Reference numeral 7 denotes a bearing that supports the rotating shaft t8 of the driven roller t3. The bearings t5 and t7 are mounted on an appropriate frame t9. A contact roller t10 is attached to the rotation shaft t6 of the drive roller t2, and the drive roller t2 is rotationally driven by bringing the drive belt t11 into contact with the contact roller t10. By driving the driving roller t2 to rotate, the spinner t1 held by the attraction force of the magnet t4 rotates between the driving roller t2 and the driven roller t3, so that the spinner t1 is inserted through the spinner t1 and wound around the peg t1 ′. The yarn y is twisted. The false twisting unit T is not limited to the above-described false twisting unit, and may be of a type in which a pair of intersecting belts are twisted by pinching a thread, or disposed at the apex of an equilateral triangle. Various false twisting units, such as a type in which the yarn is twisted by bringing the yarn into contact with the disc rotating in the same direction attached to the three shafts, can be applied.

As shown in FIG. 1, a false twist processing unit including a double twister unit D, a heater unit H, a false twist unit T and a winding unit W is arranged back to back, and A large number of pretwisting false twisting machines are arranged along the longitudinal direction.

[0010] In the present invention, the heater unit H and the false twisting unit T are interposed to function as a twist preventing means.
The first feed roller F1 and the second feed roller F2 that nip and send out the paper are arranged, so that the twist twisted by the false twisting unit T is applied to the first feed roller F.
1 and does not move toward the double twister unit D or beyond the second feed roller F2 toward the winding unit W. Therefore, the number of twists twisted by the false twist unit T is always kept constant between the first feed roller F1 and the second feed roller F2, so that twist unevenness does not occur. .

Next, control means of the false twisting and twisting machine of the present invention will be described with reference to FIG.

C1 is a first sensor for detecting the rotation speed of the roller f1 of the first feed roller F1;
First feed roller F detected by sensor c1
The number of rotations of one roller f1 is sent to the central control unit c2, is compared with a predetermined number of rotations, and is configured to control the driving motor c3 of the roller f1 of the first feed roller F1. Similarly, a second sensor c4 that detects the rotation speed of the roller f1 of the second feed roller F2 is provided, and the rotation speed of the roller f1 of the second feed roller F1 detected by the second sensor c4 is the center. It is sent to the control unit c2, is compared with a predetermined number of revolutions, and is configured to control the drive motor c5 of the roller f1 of the second feed roller F2. Further, if necessary, a third number of rotations of the friction roller w1 for rotating the package w2 is detected.
A sensor c6 is provided, and the number of rotations of the friction roller w1 detected by the third sensor c6 is sent to the central control unit c2 to be compared with a predetermined number of rotations, and the driving motor c of the friction roller w1 is compared.
7 is controlled.

Since the feed speed of the yarn y of the first feed roller F1 affects the number of twists of the yarn y in the double twister unit D, the yarn y of the first feed roller F1 is
, That is, the number of rotations of the roller f1 of the first feed roller F1, can control the quality of the processed yarn. Further, since the feed speed of the yarn y of the second feed roller F2 affects the number of twists twisted by the false twisting unit T, the feed speed of the yarn y of the second feed roller F2, ie, the second feed By controlling the number of rotations of the roller f1 of the roller F2, a processed yarn with improved quality can be manufactured. Further, by controlling the drive motor c7 of the friction roller w1, the hardness and density of the package w2 can be appropriately maintained.

The number of rotations of the roller f1 of the first feed roller F1 detected by the first sensor c1 and the second feed roller F2 detected by the second sensor c2
The rotation speed of the roller f1 is compared in the central control unit c2, and the ratio of the feed speed of the yarn y of the first feed roller F1 to the feed speed of the yarn y of the second feed roller F2 becomes a predetermined value. It is configured to be controlled. Since the yarn y is twisted by the false twisting unit T and set by the heater unit H, the feed speed of the yarn y of the first feed roller F1 is equal to the feed speed of the yarn y of the second feed roller F2. The speed is controlled to be higher than the speed, and the ratio of the feed speed of the yarn y of the first feed roller F1 to the feed speed of the yarn y of the second feed roller F2 (this ratio is referred to as an overfeed rate). By appropriately controlling, a processed yarn with improved quality can be manufactured.

As described above, in the present invention, while functioning as twisting means, the yarn y is
1 and the endless belt f3, the first feed roller F1 and the second feed roller F2 to be fed out are arranged, so that accurate speed control of the first feed roller F1, the second feed roller F2, and the friction roller w1 is required. However, each sensor c1 as described above,
The speeds detected by c4 and c6 are accurately controlled by the central control unit c2, so that abnormal tension is not applied to the yarn y and the yarn y is not cut. A processed yarn of stable quality can be manufactured.

In the embodiment described above, an example is shown in which the first feed roller F1 and the second feed roller F2 are constituted by the roller f1, the endless belt f3, and the like. Alternatively, a feed roller that nips and feeds the yarn y with a pair of endless belts can be used.

In the above-described embodiment, the first feed roller F1 and the second feed roller F2 are used as management means for maintaining an appropriate overfeed rate.
An example is shown in which drive is performed separately by drive motors c3 and c5 different from the drive motor c7 of the winding unit W, and the number of rotations is monitored to perform feedback control.

As another embodiment, the management means can be configured as follows. For example, a monitor screen that displays the detection results of the first sensor c1 and the second sensor c4 may be provided, and the displayed number of rotations may be monitored by the operator. With such a configuration, the driving method is as follows from the driving motor c7 of the winding unit W,
First feed roller F1 and second feed roller F
The belt is driven to 2 and the change in the rotation speed of the feed roller displayed on the monitor notifies the operator of the abnormality of the overfeed rate and the abnormality of the number of twists due to the deterioration of the belt described above. be able to. Therefore,
Quick response such as belt exchange. Such a management means can be applied not only to a feed roller of a type in which a yarn is nipped and sent out, but also to a feed roller of a conventional type in which a yarn is nipped by a dish-shaped disk and fed out.

[0019]

Since the present invention is configured as described above, the following effects can be obtained.

Since the feed roller for nipping and feeding the yarn is disposed between the heater unit and the false twist unit, twisting can be reliably performed.
Therefore, it is possible to manufacture a processed yarn having no twist unevenness.

Since the feed speed of each feed roller is controlled so as to maintain an appropriate overfeed rate, the number of twists of the yarn can be accurately controlled, and the processed yarn of a stable quality can always be obtained. Can be manufactured.

[Brief description of the drawings]

FIG. 1 is a side view of a pretwisting false twisting machine of the present invention.

FIG. 2 is a side view of an example feed roller used in the pretwisting false twisting machine of the present invention.

FIG. 3 is a front view of a main part of a false twist unit and the like of the false twist false twisting machine of the present invention.

FIG. 4 is a control block diagram of the false twist false twisting machine of the present invention.

[Explanation of symbols]

 D: Double twister unit F1: First feed roller F2: Second feed roller H: Heater unit T:・ False twisting unit W ・ ・ ・ ・ ・ ・ ・ Winding unit

Claims (3)

[Claims] 1. A pre-twisting false twisting machine comprising a double twister unit, a heater unit, a false twisting unit, and a winding unit, wherein the yarn is nipped with the heater unit and the false twisting unit interposed therebetween. A twisting false twisting machine characterized by having a feed roller for feeding. 2. The pre-twisting false twisting machine according to claim 1, wherein the feed roller comprises a roller and an endless belt, and the yarn is nipped and sent out by the roller and the endless belt. . 3. A pre-twisting false twisting machine comprising a double twister unit, a heater unit, a false twisting unit and a winding unit, wherein the yarn is nipped while sandwiching the heater unit and the false twisting unit. A pre-twisting false twisting machine characterized by comprising a feed roller for feeding and a control means for detecting a feed speed of each feed roller and maintaining an appropriate overfeed rate.