JPS5848648B2 - Yarn splicing method and device in adsorption twisting spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses an adsorption-twisting spinning machine that adsorbs separated and flying fibers onto the surface of a mesh-like endless belt, twists them, and spins them from a winding package. Grasp the seed yarn that has been rewound longer than the length in the longitudinal direction of the slit facing the mesh-like endless belt of the orientation duct with your fingers, etc., and then hold it on the outside of both longitudinal ends of the orientation duct to prevent it from becoming over-twisted. The present invention relates to a yarn splicing method and apparatus characterized in that yarn splicing can be quickly and easily performed in a state where the yarn splicing is prevented.

The conventional suction twisting spinning machine has only just begun trial production as a practical machine, and splicing is done by hand, by grasping the end of the seed yarn with your fingers and bringing it to the back of a mesh-like endless belt. This yarn and the fibers flying from the orientation duct are adsorbed and twisted onto a mesh-like endless belt to perform yarn splicing.

Therefore, a wide running mesh endless belt is particularly required.

When using a wide mesh-like endless belt, it is difficult to move the fingers holding the end of the seed yarn to the rear of the running mesh-like endless belt in a suction twisting spinning machine for long fibers. Therefore, it had the disadvantage that it was difficult to join the threads.

The present invention has been made for the purpose of solving the conventionally known problems as described above, and has the following features.

The yarn splicing method (specific invention) of this invention involves using a suction twisting spinning machine in which a mesh-like endless belt is sandwiched, an orientation duct and a suction duct facing each other, and yarn breakage is detected by a yarn breakage detector. The fiber supply to the orientation duct is stopped, the yarn is unwound from the winding package as a seed yarn, and the length of the unwound seed yarn is faced to the mesh endless belt of the orientation duct close to the mesh endless belt. The length of the slit in the longitudinal direction is made longer, and excessive twisting of the seed yarn is prevented by gripping it on the outside of both longitudinal ends of the orientation duct. Start supplying the fibers to the duct, and unwind the seed yarn to a length longer than the length of the slit facing the endless mesh belt of the orientation duct and the fibers that have flown from the orientation duct.
It is characterized in that the yarn is spliced by adsorption and twisting on a mesh-like endless belt.

The yarn splicing device of the present invention for carrying out this specific invention is as follows.

In other words, in an adsorption-twisting spinning machine in which an orientation duct and a suction duct are installed facing each other with a mesh-like endless belt in between, a yarn breakage detector is installed between the take-up roller and the take-up roller, and a yarn breakage detector is installed between the winding roller and the take-up roller. A suction pipe is arranged adjacent to the side surface of the direction, and a cover pipe, which is somewhat longer than the width of the endless mesh belt, is rotatably inserted into the front end of this suction pipe, and the front end circumferential surfaces of these suction pipes and the cover pipe are inserted. A slit that is somewhat longer than the width of the endless mesh belt is bored in the axial direction of the suction pipe, and a short zigzag bent part provided at the rear end of the suction pipe is spun outside of the endless mesh belt in the width direction. The horizontal distance between the edge of the mesh-like endless belt on the side opposite to the direction in which the yarn is drawn out and the above bending part is determined by The length should be approximately 1 to 3 times the average length, and a positioning groove small enough to insert a seed thread should be provided at both ends of the lower opening of the orientation duct, and the groove should be approximately perpendicular to both ends of the opening in the longitudinal direction. This is a yarn splicing device that can be attached to a suction twisting spinning machine, and is characterized by having an L-shaped guide pin installed at the top.

The yarn splicing method and apparatus for the suction twisting spinning machine of the present invention will be described below using embodiments and drawings.

As shown in FIGS. 1 to 3, in an adsorption twisting spinning machine in which a mesh endless belt 1 is sandwiched between an orientation duct 2 and a suction duct 3 facing each other, a winding roller 6 and take-up rollers 5, 5' are used. A suction pipe 9 is arranged adjacent to the longitudinal side of the lower part of the orientation duct 2, and the front end of the suction pipe 9 has a width slightly wider than the mesh endless belt 1. A long cover pipe 10 is rotatably inserted into the suction pipe 9 and a slit 11 which is somewhat longer than the width of the mesh endless belt 1 in the axial direction of the front end circumferential surface of the cover pipe 10.
. The horizontal distance between the edge of the mesh-like endless belt 1 on the side opposite to the drawer side of the yarn 4 to be spun and the bent portion 13 is determined by the average length of the fibers of the yarn 4 to be spun. In addition, grooves 15 small enough to insert the seed yarn are provided at both ends of the lower opening of the orientation duct 2, and grooves 15 for positioning are provided at both ends of the opening in the longitudinal direction of the orientation duct 2. A long L-shaped guide pin 14 is provided.

Furthermore, the edge of the mesh-like endless belt 1 and the bent portion 13 of the suction pipe 9 on the opposite side to the drawer side of the yarn to be spun
It is preferable that the horizontal distance between the thread and the thread is adjustable, and the width of the positioning groove 150 is about 4 mm to allow insertion of the seed thread.
4' is a fiber bundle, and 7 is a fiber splitting device.

Since the present invention is constructed as described above, it has the following effects.

The fibers sent out from the fiber splitting device 7 fly through the orientation duct 2 due to the suction force from the suction duct 3, and become a fiber bundle 4' that is adsorbed on the surface of the mesh endless belt 1. The bundle 4' is twisted by the running of the endless mesh belt 1, becomes a thread 4, and is passed through a take-up roller 5.
, 5' and wound up by a winding roller 6 into a winding package 6'.

In this way, when the yarn is cut during spinning, the yarn breakage detector 8 detects the breakage of the yarn 4 and stops the supply of fibers to the fiber splitting device γ. , while pulling out the scraps of the thread 4 from the winding package 6' and using it as a seed thread, rotating the cover pipe 10 at right angles to the axis,
After blocking the long slit 11 of the suction pipe 9 (
(See Figure 2) The end of the seed yarn is sucked into the suction pipe 9 and adsorbed to the bent portion 13 of the suction pipe 9 to prevent excessive twisting on the seed yarn.
The suction pipe 9 holds the end of the seed yarn 11, the cover pipe 10 is rotated at right angles to the axis, and the long slits of the suction pipe 9 and the cover pipe 10 are overlapped. A part of the seed yarn in the suction pipe 9 is pulled out from the orientation duct 20.
It is shifted along the guide pins 14 provided at both ends, inserted into the positioning groove 15, and placed on the mesh endless belt 1 (see FIG. 3).

Next, the fiber splitting device and the suction device (not shown) are operated, and the fibers separated by the fiber splitting device 7 are flown into the orientation duct 2 and adsorbed onto the mesh-like endless belt 1 together with the seed yarn. By running this mesh-like endless belt 10, the yarn is twisted and spliced over a long portion of the seed yarn.

The distance between the bent part 13 of the button suction pipe 9 and the mesh-like endless belt 1 depends on the length of the fibers used, the spinning count,
This can be adjusted arbitrarily by adjusting the spinning conditions such as the number of twists.

In the conventional yarn splicing method, the seed yarn is passed through a mesh endless belt 1.
Even if the fiber bundles 4' adsorbed on the surface of the belt 10 reach a predetermined thickness 1, even if the fibers are placed on top of the belt 10 and the fibers begin to be fed, it will take a certain amount of time. If this is not done, the seed yarns will be excessively twisted, and when the fiber bundle 4' reaches a predetermined thickness on the mesh endless belt 11, the seed yarns will not rotate, making it extremely difficult to splice the yarns. Ta.

When splicing is performed using the splicing method and device of the present invention, the end of the seed yarn can be quickly inserted into the bent portion 13 of the pipe 9 by simply sucking and inserting the end of the seed yarn into the suction pipe 9. Moreover, since it can be easily adsorbed and held, excessive twisting of the seed yarn can be prevented.

Moreover, since the distance between the mesh endless belt 1 and the above-mentioned bending part 13 can be adjusted, the above-mentioned distance can be adjusted arbitrarily depending on the spinning conditions such as the length of the fiber used, the spinning count, the number of twists, and the spinning speed. By adjusting the length, there is a remarkable effect that the spliced yarn can be controlled so that it has a predetermined length and thickness.

As described above, the present invention provides the bending portion 1 of the suction pipe 9.
The frictional resistance between the seed yarn 3 and the ends of the seed yarn prevents the seed yarn from being twisted excessively, and has the remarkable effect that subsequent splicing can be easily completed and spinning can be continued.

1. Since the slit 11 of the suction pipe 9 is always covered by the circumferential surface of the cover pipe 100, the long section of the end of the seed yarn can be quickly and easily sucked, and the raw material and power consumption during splicing can be saved. It also has the effect of saving money.

Since a guide pin is provided, the thread can be easily inserted into the positioning groove.

[Brief explanation of the drawing]

Figure 1 is a side view of the present invention installed on an adsorption twisting spinning machine, Figure 2A is a partial perspective view showing the structure of the suction pipe and cover pipe, and Figure 2B is a partial side view of the suction pipe. , FIG. 3 is a perspective view of the orientation duct. 1... Endless mesh belt, 2...
Orientation duct, 3... Suction duct, 4...
・Thread, 4'...Fiber L5, 5'...Take-up roller 6...Take-up roller
6'... Winding package, 7... Separating device, 8... Yarn breakage detector, 9...
Suction pipe, 10...Cover pipe 7'.
11... Suction pipe slit, 12.
...Cover pipe slit, 13...
Bent part, pin, 15... Groove for positioning. 14... Guy

Claims (1)

[Scope of Claims] 1. In an adsorption twisting spinning machine in which an orientation duct and a suction duct are provided facing each other with a mesh-like endless belt in between,
Detects yarn breakage and stops the fiber supply to the orientation duct,
The yarn is unwound from the winding package to serve as a seed yarn, and the length of the unwound seed yarn is made longer than the length in the longitudinal direction of the slit facing the mesh endless belt in the orientation duct adjacent to the mesh endless belt. With the seed yarns prevented from being excessively twisted by gripping them on the outside of both longitudinal ends of the orientation duct, the fiber opening device starts supplying the fibers to the orientation duct, and the A feature of this method is that the fibers that have been rewound longer than the longitudinal length of the slits facing the mesh-like endless belt and the fibers that have flown from the orientation duct are adsorbed and twisted on the mesh-like endless belt to perform yarn splicing. A method of joining threads. 2. In a suction twisting spinning machine in which an orientation duct and a suction duct are installed facing each other with a mesh-like endless belt in between, a yarn breakage detector is installed between a winding roller and a take-up roller, and a yarn breakage detector is installed between a winding roller and a take-up roller, and A suction pipe is arranged adjacent to the side surface of the direction, and a cover pipe of a mesh-like endless belt with a somewhat longer width is rotatably inserted into the front end of this suction pipe. A slit that is somewhat longer than the width of the endless mesh belt is bored in the axial direction of the suction pipe, and a short zigzag bent part provided at the rear end of the suction pipe is connected to the outside of the endless mesh belt in the width direction. The horizontal distance between the edge of the mesh endless belt on the side opposite to the drawer side of the yarn to be spun and the above bending part is determined by the fiber of the yarn to be spun. The length should be approximately 1 to 3 times the average length of the duct, and small positioning grooves large enough to insert the seed threads should be provided at both ends of the lower opening of the orientation duct, and approximately 1 to 3 times the average length of A yarn splicing device that can be attached to a suction twisting spinning machine and is characterized by having a vertically long L-shaped guide pin.