JPS6215341A - Yarn false twister - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a yarn false twisting machine for false twisting spatally spun filament yarns.

In conventional technical false twisting machines, the yarn pulled out from the yarn supply package passes through a heater and a cooling plate before being introduced into a false twisting device, such as a belt type or friction type. The twist formed on the yarn by the false twisting device propagates into the heater, and is heat set by the heater, thereby imparting bulk to the yarn. Heaters tend to become longer in order to enable high-speed processing of yarn, and in an attempt to avoid the problems associated with this, such as increasing the size of the entire yarn false twisting machine and complicating the yarn running path,
A yarn false twisting machine shown in Japanese Patent Application Laid-Open No. 55-6524 has been proposed.

Problems to be Solved by the Invention The yarn leaving the heater is cooled to a predetermined temperature by the cooling plate described above and then introduced into a false twisting device. If the yarn is insufficiently cooled, the false twisting device will easily deteriorate due to an increase in temperature, and the physical properties of the yarn may also be adversely affected. Therefore, when kneading yarn at high speed, it is necessary to increase the length of the heater and to increase the cooling efficiency of the cooling plate.

The yarn false twisting machine disclosed in the above-mentioned publication uses a method of passing the yarn through water to cool it, but this method requires a water circulation supply system and also causes problems due to water leakage. There are problems that are difficult to avoid. Using airflow instead of water also requires special equipment for air cooling, which is not economical. Furthermore, when the yarn is cooled by such water or air, the yarn is cooled rapidly, which causes the problem that the physical properties of the yarn are adversely affected. Furthermore, if the distance between the heater and the false twisting device is simply increased, a problem arises in that the installation space of the yarn false twisting machine as a whole increases accordingly. The present invention aims to solve such problems.

Means for Solving the Problems The present invention provides a creel and a first heater on one side of a working space, a second heater and a winder on the other side, and a cooling plate and a false twister on the upper side of the working space. A yarn false twisting machine in which a yarn drawn out from a creel yarn supply package is passed through a first heater and then passed through a cooling plate and a false twisting device in order, and then further passed through a second heater and guided to a winder. The first heater is characterized in that the upper end of the first heater is inclined in a direction away from the false twisting device.

Function In the present invention, since the upper end of the first heater is located farther from the false twisting device than in the case where the first heater is provided vertically, a longer cooling plate can be used. Therefore, the yarn heated by the first heater can be reliably cooled to an appropriate temperature, and the yarn can be sufficiently processed at high speed.

Example FIG. 1 shows the entire yarn false twisting machine according to the present invention.

(1) is a work space surrounded by frame (2),
A first heater (3) is arranged on the negative side, and a winder (4) is arranged on the other side. Also, behind the first heater (3) is a creel (
5), a second heater (6) is arranged behind each winder (4), and a cooling plate (7) and a false twisting device (8) are arranged above the work space (1). There is.

The first heater (3) is fixed to the frame (2) with its upper end inclined in a direction away from the false twisting device (8), that is, so that the upper end is located above the creel (5). The creel (5) has a large number of pegs (11) for supporting the yarn supply package (Pl), and also has a guide pipe (12) for passing the yarn (Y) pulled out from the package (Pl). are doing. These guide pipes (
12) all pass through the lower end of the creel (5), and its tip exit faces into the work space (1). False twisting device (8)
is provided above the winder (4), and the false twisting device (8)
A long cooling plate (
7) is provided in an inclined position. The structure of the false twisting device (8) is shown in FIG. 2, and includes a driving pulley (13) and a driven pulley (1
4) Two endless rubber belts (
15) (15) are arranged to cross each other in an X-shape, and both bells) (15) (15) are pressed against each other with a predetermined pressure, and the thread (Y) is nipped between the contact surfaces. Each drive pulley (13) (13) is an arrow (16)
(16) direction, each belt (1
5) (15) runs in the direction of arrow (17) (17), false twists the yarn (Y) in the direction of arrow (18) on the upstream side of the nip point, that is, on the cooling plate (7) side, and also prevents glare. (Y) in the direction of arrow (19). Cooling plate (
The cross-sectional shape of 7) is as shown in Figure 3, and there is a thread (
It is a metal pipe-like object having a guide groove (21) for guiding the Y). The second heater (6) is shorter than the first heater (3) and is fixed vertically.

The winder (4) includes a cradle arm (22) for supporting the bobbin of the winding package (P2), and a friction roller (2) for rotating the package (P2).
3) A traverse device (not shown) and other devices for guiding the yarn (Y) serve to wind up the yarn (Y) exiting the second heater (6) as a winding package (P2). . Further, a first feed roller (24) is disposed below the first heater bed 3), second and third feed rollers (25) (26) are disposed above and below the second heater (6), respectively. There are two thread guides (
27) (28) is provided. Thread guide (27)
The thread hook (28) is provided at the tip of the 2nd door (29), and the 7th door (29) slides onto the guide rail (31) fixed to the front surface of the first heater (3). movably supported. Sometimes, the thread hook is opened by opening the lid (32) of the first heater (3), opening the thread hook, and pulling down the Y door (29).
is hung on the thread guides (27) and (28), and then the thread hook pushes the rod (29) up along the guide rail (31) and fixes the rod (29) in position by appropriate means, and closes the lid (32).

In the yarn false twisting machine described above, the yarn (Y) pulled out from the yarn supply package (Pl) of the creel (5) is guided under the first feed roller (24) through the guide pipe (12), and then guided under the first feed roller (24). After running slightly diagonally through the first heater (3) from the ball to the sleeve, the thread is bent by the thread guides (27) and (28) above the first heater (3), and passes through the guide groove of the cooling plate (7). (21), and is introduced into the false twisting device (8). The yarn (Y) leaving the false twisting device (8) passes through the second feed roller (25)
The yarn passes through the heater (6) from top to bottom and is guided through the third feed roller (2) to the winder (4) where it is wound up as a winding package (P2).
The twist formed on Y) is propagated to the first feed roller (24) via the cooling plate (7), the yarn guides (27) (28) and the first heater (3),
). The second heater (6) is a false twisting device (
8), the residual torque of the untwisted yarn (Y) is eliminated, and the yarn (Y) wound as a winding package (P2) becomes a bulky yarn.

In the main yarn false twisting machine, the yarn (Y) is processed at a high speed of 1000 m/min or more, and therefore the first heater (3)
The cooling plate (7) has a length sufficient to cope with such high-speed machining. In order to reduce the height of the entire yarn false twisting machine as much as possible, the first heater (3) is installed as low as possible without interfering with the work.
It is installed in an inclined position at an appropriate angle. The first heater (
3) The lower end of the first heater is set at the left and right position (A) such that the width (W) of the work space (1) is a predetermined width suitable for working, and the upper end of the first heater is set at the right and left position (A) such that the width (W) of the work space (1) is a predetermined width suitable for working. The left and right positions (B) are determined according to the length. If the heater (3) is installed vertically with the lower end of the first heater (3) set at the above position (A), the length of the cooling plate (7) will be shortened, or the length of the cooling plate (7) will be shortened. A problem arises in that the distance from the upper end of the yarn false twisting machine to the upper end of the yarn false twisting machine increases. Furthermore, if the heater (3) is installed vertically with the upper end of the first heater (3) set at the position (B) shown in Figure 1, the width (W) of the work space (1) will be larger than necessary. This creates a problem in that the installation space for the yarn false twisting machine increases. Therefore, in the main yarn false twisting machine, by setting the first heater (3) in an inclined position, a sufficiently long cooling plate (7) can be used without increasing the size of the entire yarn false twisting machine. There is.

As a result of the length of the cooling plate (7), no special water or air cooling device is required to cool the yarn, and the yarn (Y)
passes through the cooling plate (7).
Heat is naturally radiated by contact with the material, and the material is cooled to an appropriate temperature. When the belt-type false-twisting device shown in FIG. 2 is used as the false-twisting device (8), if the temperature of the yarn (Y) introduced into the device is high, the temperature of the rubber belt (15) will rise, and the temperature of the rubber belt (15) will increase.
(15) causes deterioration. For this reason, the yarn (Y) must be cooled to around 70 degrees at the time it is introduced into the false twisting device (8), and the traveling speed of the yarn (Y) must be increased to 1000 per minute.
m, assuming that the temperature of the yarn (Y) at the time it leaves the first heater (3) is around 210 degrees, and considering the change in the thickness of the yarn (Y) used, the length of the cooling plate (7) The height is preferably about 2 m.

In addition, the first heater (3) has a lid (32) as shown in FIG.
Preferably, it is tilted so that it faces upward. Thread (Y
) is heated and evaporated by the first heater (3), and the steam rises naturally or is discharged from the upper end of the heater due to the running force of the thread (Y), but some of the steam evaporates from the first heater (3). The thread guide groove (33) of (3) is dirty, and the groove (3)
3) may stain the yarn (Y) that runs in contact with it.

By tilting the first heater (3) as described above, the steam emitted from the yarn (Y) within the heater is directed to the opposite side of the yarn guide groove (33) as shown by the arrow in Figure 4. Since the groove (33) is raised, contamination of the groove (33) can be reduced. Since the steam released from the yarn (Y) into the steam passage (34) rises in the passage (34) in a direction perpendicular to the paper plane of FIG. 4 and is discharged, the slope of the first heater (3) If the angle is too large, the steam discharge efficiency will decrease. Therefore, it is preferable to set the inclination angle of the first heater (3) to about 10 degrees, taking into consideration the length of the cooling plate (7) mentioned above.

Effects of the Invention According to the present invention, the dimensions of the cooling plate can be set to be sufficiently long without increasing the size of the entire yarn false twisting machine. Therefore, the temperature of the yarn exiting the first heater can be reliably lowered to a desired temperature before the yarn can be introduced into the false twisting device, making it possible to handle high-speed processing of the yarn. Furthermore, it is economical because no special equipment for water cooling or air cooling is used, and since the yarn is gradually cooled, there is no adverse effect on the physical properties of the yarn.

[Brief explanation of the drawing]

Fig. 1 is a side view of a yarn false twisting machine according to the present invention, Fig. 2 is a perspective view showing a belt type false twisting device, Fig. 3 is a sectional view of the cooling plate, and Fig. 4 is a sectional view of the first heater. It is. (1)...Work space, (3)...First heater (4)
... Winder, (5) ... Creel (6) ... Second heater, (7) ... Cooling plate (8) ... False twisting device, (Pi) ... Yarn feeding package ( Y)... Thread Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A creel and a first heater are placed on one side of the work space, and a second heater and a winder are placed on the other side.A cooling plate and a false twisting device are placed above the work space, and the yarn is drawn out from the creel's yarn supply package. The yarn false twister passes the yarn through a first heater from bottom to top, passes through a cooling plate and a false twisting device in order, and then leads the yarn through a second heater to a winder. A yarn false twister characterized in that the upper end is inclined in a direction away from the false twister.