JPS6223817Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a yarn guide plate in a false twisting machine for bulking multifilament yarn, and in particular to a false twisting device for applying false twist to the yarn, and a yarn guide plate formed by the device. The present invention relates to a yarn guide plate that is disposed between a heater that fixes the twist and guides the traveling of yarn.

The yarn guide plate suppresses yarn vibration and smoothes the propagation of twist, and also functions to absorb the temperature of the yarn heated by the heater and lower it to a predetermined temperature, and generally causes the yarn to run in contact with each other. It has a groove for

The twist formed on the yarn by the false twisting device propagates in the opposite direction to the running direction of the yarn, but the propagation of twist on the yarn means that the yarn rotates, and therefore the yarn is It is rotated at a very high speed by a twisting device and rolls on the inner surface of the groove. On the other hand, the yarn used in the false twisting machine is pre-applied with an oil agent for smoothing the unwinding of the yarn from the yarn supply package and the smooth running of the yarn, but this oil agent is heated in the heater. After that, it is rapidly cooled in the guide plate, condenses, and adheres to the groove. If a large amount of the oil adheres to the inside of the groove, the thread running inside the groove loses stability, and the yarn may roll violently and eventually escape from the groove.

In order to prevent the thread from escaping out of the groove, it is possible to make the groove into a pipe, provide a lid to the groove, or narrow the opening of the groove. If such a structure is adopted, it becomes difficult to pass the yarn through the groove at the start of yarn processing, and the oil agent tends to accumulate in the groove, so its effectiveness remains questionable.

The present invention aims to solve the above-mentioned problems, and embodiments thereof will be described below with reference to the drawings.

FIG. 1 schematically shows the entire false twisting machine, in which the yarn Y pulled out from the yarn supply package P1 by the first feed roller 1 passes upward through the vertically installed first heater 2 and is guided After being bent by the pins 3 and 4, the yarn runs approximately straight along a long yarn guide plate 5 installed slightly diagonally downward, and is introduced into a false twisting device 6. The false twisting device 6 is a known belt type false twisting device that performs false twisting by nipping the yarn Y between two endless belts that intersect and run in different directions. The twist formed above propagates in a direction opposite to the running direction of the yarn Y, that is, from the yarn guide plate 5 through the first heater 2 to the first feed roller 1, and is thermally fixed within the first heater 2. The untwisted yarn Y leaving the false twisting device 6 is bent downward by a guide pin 7, passes through a second feed roller 8, a second heater 9, and a third feed roller 10 in this order, and is rotated by a friction roller 11. It is wound onto a winding package P2.

It is assumed that the yarn Y is already impregnated with a predetermined amount of lubricating oil in the state of the yarn supply package P1, and the false twisting device 6 is a known method that performs false twisting by bringing the yarn Y into contact with a plurality of rotating disks. It is possible to use a friction type or the like. The space below the yarn guide plate 5 serves as a working passage 12 for the operator, and a second heater 9 is installed as necessary to remove stress and strain remaining in the yarn Y.

2 to 4 show the structure of the thread guide plate 5, which is formed by bending a metal plate into a long rectangular tube shape. Thread guide plate 5
A long groove 13 for running the thread Y on the lower surface of the
is bent over its entire length, and its cross section is an inverted U-shape with an opening at the bottom. Further, a plurality of holes 14 are punched out in the groove 13 along its longitudinal direction at regular intervals. The hole 14 extends from the upper wall 15 of the groove 13 to the side walls 1
It is formed over the upper half of 6 and 16.

The thread Y runs in the groove 13 along the upper wall 15 from right to left in FIG.
and the side wall 16 in the vicinity thereof. Since the yarn guide plate 5 is inclined downward from the inlet side to the outlet side of the yarn Y, and due to the running force of the yarn Y, the oil adhering to the groove 13 starts to flow toward the lower left in FIG. 3. do. The oil reaches the hole 14 after some movement along the upper wall 15 and the side wall 16, and passes through the hole 14 to the outer wall surface of the groove.
Reach 7. Thereafter, while the oil flows along the outer wall surface 17, the oil drain passage 1 formed on both sides of the groove 13 in the thread guide plate 5 as shown by the symbol A
8, 18, flows along the oil drain path 18 together with the oil that has flowed in from other holes 14, and drips into a suitable pipe or container 19 from the lower end of the oil drain path.

Therefore, the oil adhering to the inner surface of the groove 13 from the yarn Y during the false twisting process is always discharged to the outside of the groove through the hole 14, and only a certain amount of oil is always present on the inner surface of the groove 13. Therefore, the amount of oil adhering to the inner surface of the groove 13 does not increase with the passage of time, and the thread Y can maintain stable running, and there is no risk of it escaping out of the groove due to the influence of the oil.

Furthermore, if the thread guide plate 5 described above is used,
Since the contact area between the yarn Y and the groove 13 is reduced by the hole 14, the amount of heat absorbed from the yarn Y by the yarn guide plate 5 is reduced, and the temperature of the yarn immediately before being introduced into the false twisting device 6 becomes excessive. You can prevent it from getting too low. That is, the yarn guide plate 5 has to be long to some extent in order to suppress the vibration of the yarn Y and to secure the working passage 12 below the plate 5, but the yarn guide plate 5 is long. The longer the length, the more the temperature of the yarn Y decreases. The false-twisted yarn Y undergoes a knitting and weaving process to become a knitted fabric or a woven fabric, and after passing through processes such as scouring and dyeing, the shape is fixed by heat setting. The above-mentioned knitted or woven fabric is heated during the dyeing process to cause thermal contraction, but in the heat-setting process, it is stretched again to a predetermined size by a device called a tenter, etc.
Tenting, anti-wrinkle and texture determinations are made for the fabric. If the temperature of the yarn Y introduced into the false twisting device 6 is too low, the above-mentioned heat shrinkage will not be performed sufficiently, resulting in a decrease in the quality of the fabric.

Therefore, providing a plurality of holes 14 in the groove 13 of the yarn guide plate 5 not only prevents the yarn Y from accidentally escaping from the groove 13, but also prevents the yarn Y from accidentally escaping from the groove 13.
It is possible to prevent the excessive temperature drop of the thread Y without changing the length of the thread Y, and to achieve sufficient heat shrinkage.

The length of the yarn guide plate 5, the shape and depth of the groove 13, and the shape, size, number, etc. of the holes 14 are subject to design changes as appropriate depending on the yarn type, yarn speed, type of oil, etc. 14 may be formed only on the upper wall 15 of the groove 13 as shown in FIG.

As explained above, according to the present invention, since a plurality of holes are provided in the groove of the thread guide plate, the oil supplied from the thread to the groove can be removed through the holes, and the effect of the oil can be removed. It is possible to eliminate the problem of the rope slipping out of the groove. In addition, it is easy to thread the thread through the groove, and the contact area between the thread and the groove can be reduced by the holes described above, which prevents excessive cooling of the thread and makes it suitable for processing in subsequent processes. You can get thread.

[Brief explanation of the drawing]

Figure 1 shows the entire false twisting machine, Figures 2 to 4 each show the yarn guide plate, and
The figure is a bottom view, FIG. 3 is a vertical side view, FIG. 4 is a vertical front view, and FIG. 5 is a vertical front view showing another example of the thread guide plate. 2...first heater, 5...yarn guide plate,
6...False twisting device, 13...Groove, 14...Hole, Y...
…thread.

Claims (1)

[Scope of utility model registration request] A yarn guide plate for a false twisting machine that guides yarn coming out of a heater toward a false twisting device, characterized by having a groove for causing the yarn to run in contact with each other, and a plurality of holes provided in the groove. Yarn guide plate for false twisting machine.