JPH0415293B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a yarn splicing machine in a spinning machine such as a binding spinning machine.

(Prior art) Generally, when producing spun yarn such as bound spun yarn, the sliver is continuously supplied to a drafting device consisting of a front roller, middle roller, back roller, etc., and is drafted at a predetermined ratio. ,
A spinning unit that supplies the staple fiber bundle to a spinning device having a fluid nozzle, etc., applies an air flow to the staple fiber bundle to form a spun yarn, and winds the spun yarn as a package with a winding device. A spinning machine with multiple units installed in the longitudinal direction of the machine is used.
The spinning machine is equipped with a splicing machine that runs along the spinning unit in the longitudinal direction of the machine.

When a yarn breakage occurs during the production of spun yarn and the yarn breakage detector is activated, a signal from the control device moves the yarn splicing machine to the splicing operation position of the corresponding spinning unit, and The yarn spun from the device is suctioned as an upper thread by the upper thread conveying means and conveyed to the yarn splicing device, and at the same time, the rotation of the package of the winding device is stopped and the yarn end is transferred from the package as the lower thread. The yarn is suctioned by a yarn conveying means, pulled out, and conveyed to the above-mentioned yarn splicing device to perform yarn splicing. The yarn path is as shown in FIG. 8, and the yarn path DE between the upper yarn path regulation guide position 15b position D and the lower yarn path regulation guide position 15cE in the yarn splicing device 15 is the same as that of the slab catcher. It is in a state parallel to the yarn path AB from the exit position A of the winding device 7 to the position B where the yarn is wound around the drum 8 of the winding device 10. Therefore, the upper thread and lower thread are connected to the thread splicing device 1.
In order to introduce the yarn into the yarn splicing operation section 15a of No. 5, a yarn splicing device equipped with a mechanism for pushing the yarn into the yarn splicing operation section as described in Japanese Patent Publication No. 61-53972 is used, for example. has been done.

(Problem to be solved by the invention) Approximately 200 needle threads were spun from the above-mentioned spinning device.
Since the machine is running at a spinning speed of m/min, if the upper thread and lower thread come into contact with each other before they are introduced into the chamber, which is the yarn splicing part of the yarn splicing device, the There has been a problem in that the fluff in the thread path becomes entangled and the upper thread stops running, or the lower thread moves downward together with the upper thread, making it impossible to splice.

An object of the present invention is to reliably introduce an upper thread and a lower thread into a thread splicing operation section so that the thread splicing can be performed.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the splicing machine of the spinning machine of the present invention has a splicing machine for a spinning machine that suctions the yarn spun from the spinning device as a needle thread and conveys it to the splicing device. In a spinning machine equipped with a yarn splicing machine comprising a yarn conveying means and a bobbin yarn conveying means for sucking yarn from a package being wound as a bobbin thread and conveying it to the yarn splicing device, the above-mentioned yarn splicing device may be used. , the yarn path DE between the upper yarn path regulation guide position D and the lower yarn path regulation guide position E in the yarn splicing device
However, there is a line segment AC connecting traverse fulcrum position A and position C where the upper thread transport means conveys the yarn to the yarn splicing device, and a line segment AC connecting traverse fulcrum position A and position B where the yarn is wound around the drum of the winding device. , and the extension line of the upper yarn path regulation guide position D of the yarn path DE in the yarn splicing device intersects the line segment AB, and the extension line of the lower yarn path regulation guide position E side of the yarn path DE in the yarn splicing device The line is installed at a position where it does not intersect with the line segment AC, and a yarn introduction switching guide is installed close to the upper yarn path regulation guide,
With the thread introduction switching guide covering the upper thread guide groove of the upper thread path regulating guide, the lower thread is guided through the lower thread guide groove by the lower thread conveying means and the lower thread pulling guide. F, D, E, and B, and then, with the lower thread guide groove covered by the thread introduction switching guide, the upper thread is passed through the upper thread guide groove by the upper thread conveying means. When the yarn is introduced into the yarn paths A, D, E, and C, the yarn splicing device is immediately activated to splice the yarn.

(Example) The structure of one example of the spinning machine of the present invention will be described based on the drawings.

A machine base 1 includes a drafting device 2 consisting of a front roller 2a, a middle roller 2b, a cross roller 2c, etc., which drafts the staple fiber bundle at a predetermined magnification, and a front roller 2a equipped with an air nozzle, etc.
A spinning device 3 that sucks the staple fiber bundle supplied from the source and applies a swirling flow to form a bound spun yarn.
and a delivery roller 4, which is composed of a drive roller 4a and a short cantilever roller 4b, which takes over the spun yarn, and one end of which is open at the yarn traveling position and the other end is connected to a negative pressure duct. A yarn storage device 5, which is composed of a suction tube having a substantially flat passage, constantly sucks fluff, and also suctions and stores yarn during yarn splicing operations, and applies a predetermined tension to the yarn. a tensor 6 for detecting yarn defects, a slub catcher 7 for detecting defects in the yarn, a traverse drum 8 having a traversing groove and rotatably attached to the line shaft and connected and disconnected by a clutch; A winding device 10 having a cradle mechanism 9 rotatably mounted with a winding bobbin is installed in this order, and a yarn splicing machine 11 is installed in the longitudinal direction of the machine base 1.
A running space is formed, and the running rails 1a, 1
b is installed.

The outlet position of the slab catcher 7 mentioned above is the second
As shown in the figure, the yarn path AB is formed between the traverse support point A of the drum 8 and the position B where the yarn is wound around the drum 8 of the winding device 10.

The yarn splicing machine 11 described above also includes a cart 12 having driving wheels, a yarn storage mechanism 13 having a blower that generates suction force, a negative pressure duct that sucks and stores yarn, and a yarn splicing device 15. The yarn splicing mechanism 14 has a yarn splicing mechanism 14. The yarn splicing mechanism 14 is rotatably mounted above the yarn splicing device 15 on the trolley 12, and is mounted on the spinning device 3 near the delivery roller 4.
an upper thread conveying means 16 that sucks the yarn spun from the yarn splicing device 15 and conveys it to the yarn splicing operation section of the yarn splicing device 15;
The lower thread conveying means 17 is rotatably mounted below the yarn splicing device 15 of No. 2, and sucks the yarn end from the package of the cradle mechanism 9 and conveys it to the yarn splicing operation section of the yarn splicing device 15. has been done. The yarn splicing device 15 uses a splicer. Further, the yarn storage mechanism 13 is provided below the yarn splicing device 15,
The suction port is installed close to the yarn path and in a direction perpendicular to the yarn path, and the suction port is provided with a fixing member 20 attached to a support 19 as shown in FIG. , a movable member 21 that moves toward and away from a fixed member using a solenoid, and a detector 22 that detects the presence or absence of a thread.
8 is installed.

An arm 24 having a roller at its end is rotatably attached to the cart 12 below the yarn storage mechanism 13, and the arm 24 is rotated by a fluid cylinder (not shown) or an electric motor. A roller drive mechanism 23 is installed to bring the roller 25 into contact with the traversing drum 8 with a predetermined surface pressure and rotate it in forward and reverse directions.

Furthermore, as shown in FIGS. 3 to 5, the yarn splicing device 15 includes an upper yarn path regulating guide 15b at the top of the yarn splicing operation section 15a, and a lower yarn path regulating guide 15b at the bottom of the yarn splicing operation section 15a. While installing the guide 15c,
A yarn introduction switching guide 26 is installed above the upper yarn path regulating guide 15b, and a yarn introducing switching guide 26 is installed above the lower yarn path regulating guide 15.
A lower thread pull-in guide 27 is rotatably attached to the lower part of the lower part c. The yarn splicing operation section 15a is constituted by a chamber having a pressure cord air injection port, and the upper yarn path regulating guide 15b has a nipper 103 for gripping the yarn and a cutter 100 for cutting the yarn. A nipper 102 for gripping the yarn and a cutter 101 for cutting the yarn are attached to the regulation guide 15c. As shown in FIG.
A line segment where the yarn path DE between positions E connects the traversing fulcrum position A and the suction port C when the yarn is guided to the yarn splicing operation section 15a of the yarn splicing device 15 by the upper thread conveying means 16.
The upper yarn path regulation guide 15b is located between AC, the line segment AB connecting the traversing fulcrum position A, and the position B where the yarn is wound around the drum 8 of the winding device 10, and is located in the yarn path DE in the yarn splicing device. The extension line on the side of position D is line segment AB
Carry out the trolley 12 so that the extension line on the E side of the lower yarn path regulation guide 15c does not intersect with the line segment AC.
It is installed on.

When thread breakage occurs in the above-mentioned spinning machine,
The rotation of the draft device 2 is stopped and the spinning of the bundled spun yarn from the spinning device 3 is interrupted, and the clutch is operated to separate the drum 8 from the line shaft and the rotation of the package 30 is stopped. When the yarn splicing machine 11 moves to a predetermined yarn splicing operation position in this state, the draft device 2 and the spinning device 3 operate to spin out the yarn, and the roller drive mechanism 23 operates to move the arm 24. The rotating roller 25 comes into contact with the drum 8. Then, the roller 25 rotates and rotates the package together with the drum 8 in the opposite direction to the winding direction, and the bobbin thread conveying means 17 rotates counterclockwise to position the suction port on the package and end the thread. (Figure 7-1). Next, the bobbin thread conveying means 17 rotates clockwise to return the suction port to the standby position (Fig. 7-2). At this time, the thread introduction switching guide 26 is activated to prevent the lower thread from accidentally entering the upper thread guide groove _15b1 of the upper thread path regulating guide 15b of the thread splicing device 15. Open _b2 ,
The upper thread guide groove 15 _b1 is covered (Fig. 4-1), and when the suction port returns to the standby position, the lower thread is transferred to the lower thread guide groove of the upper thread path regulating guide 15 of the thread splicing device 15. 15 Introduced in _b2 . Then, the bobbin thread pull-in guide 27 operates to pull the bobbin thread into the thread splicing operation section 51a and fix it (Fig. 7-3), and the thread gripping mechanism detects the bobbin thread from the package to the thread splicing device. 18 is activated and the lower thread is gripped by the fixed member 20 and the movable member 21, the roller drive mechanism 23
is activated to rotate the roller 25 by a preset number of revolutions to send out the yarn and suction and store it in the yarn storage mechanism 13 (Fig. 7-4).

Simultaneously with the above operation, the lower thread conveying means 16 rotates clockwise to move the suction port to a position below the delivery roller 4 to suck the upper thread, and then the upper thread conveying means 16 rotates counterclockwise. and return the suction port to the standby position (Figure 7-5). At this time, the yarn introduction switching guide 26 operates to close the upper thread guide groove 15 b1 to prevent the upper thread from accidentally entering the lower thread guide groove 15 _b2 of the upper yarn path regulating guide 15b of the yarn splicing device ₁₅ . Open,
The lower thread guide groove _15b2 is covered (Fig. 4-2), and when the suction port returns to the standby position, the upper thread is transferred to the lower thread guide groove of the upper thread path regulating guide 15b of the thread splicing device 15. 15 Introduce into _b1 . Then, the roller drive mechanism 23 is activated to rotate the roller 25 and rotate the package in the yarn winding direction, and the yarn splicing device 15 is activated, and as shown in FIG. The cutter 10 cuts the yarn to the conveying means.
The needle thread and the bobbin thread are held by the nippers 102 and 103, and at the same time compressed air is supplied to the chamber to swirl the needle thread and the bobbin thread in the chamber to entangle the thread. Continue (Figure 7-6). When the splicing of the yarn is completed, the bobbin thread pull-in guide 27 has returned to the standby position, so the spliced yarn is removed from the splicing device 15. At this time, the rotational speed of the package has almost reached the winding speed, and the bobbin thread that has been sucked into the yarn storage mechanism 13 is wound onto the package (Fig. 7-6). The yarn spun from the spinning device 3 during the splicing operation is stored in the yarn storage device 5 (Fig. 7-7).

When the rotational speed of the above-mentioned package reaches approximately the winding speed, the roller drive mechanism 23 is activated, the arm 24 is rotated, and the roller 25 is separated from the drum 8, and a clutch (not shown) is activated to remove the drum. 8 is connected to a line shaft (not shown) and the package is rotated to wind the yarn, thereby completing the yarn splicing operation (FIGS. 7-8).

As described above, the upper thread guide groove 1 of the upper thread path regulation guide 15b is controlled by the thread introduction switching guide 26.
5. With the bobbin thread covering _b1 , the bobbin thread is introduced into the thread splicing operation section 15a by the bobbin thread conveying means 17 so as to pass through the bobbin thread guide groove 15 _b2 , and then by the thread introduction switching guide 26. To introduce the upper thread into the thread splicing operation section 15a by the upper thread conveying means 16 so as to pass through the upper thread guide groove 15 _b1 while covering the lower thread guide groove 15 _b2 of the upper thread path regulation guide 15b. The upper thread and the lower thread can be reliably introduced into the thread splicing operation section 15a with almost no running resistance being applied to the threads.

(Effects of the Invention) The yarn splicing machine of the spinning machine of the present invention has an upper yarn conveying means for sucking the yarn spun from the spinning device as the upper yarn and conveying it to the yarn splicing device, and a yarn splicing device for the package during winding. In a spinning machine equipped with a yarn splicing machine comprising a bobbin thread conveying means that sucks the yarn as a bobbin thread and conveys it to the yarn splicing device, the yarn splicing device is moved to an upper yarn path regulating guide position D in the yarn splicing device. The yarn path DE between the and lower yarn path regulation guide position E is a line segment connecting the traversing fulcrum position A and the position C where the upper thread conveying means conveys the yarn to the yarn splicing device.
AC and a line segment AB connecting the traverse fulcrum position A and the position B where the yarn is wound around the drum of the winding device,
And, the extension line of the yarn path DE in the yarn splicing device on the side of the upper yarn path regulation guide position D intersects the line segment AB, and the extension line of the side of the lower yarn path regulation guide position E does not intersect with the line segment AC. At the same time, a thread introduction switching guide is installed near the upper thread path regulation guide, and the upper thread guide groove is covered by the thread introduction switching guide. The thread paths F, D,
E and B, and then, with the lower thread guide groove covered by the thread introduction switching guide, the upper thread is moved through the upper thread guide groove by the upper thread conveying means to pass through the upper thread guide groove. , D, E, and C, the yarn splicing device is immediately activated to splice the yarns, so the threads come into contact with each other outside the splicing operation section, and the feathers of the yarns become entangled, causing the upper thread to become tangled. The threads can be spliced reliably without stopping the running of the thread or moving the lower thread downward together with the upper thread.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one embodiment of the spinning machine of the present invention. FIG. 2 is a schematic diagram showing the thread path of the present invention. FIG. 3 is a schematic front view showing details of the yarn splicing device of the present invention. FIG. 4 is a view taken along the Z arrow in FIG. 3. FIG. 5 is a view taken along the Y arrow in FIG. FIG. 6 is a schematic perspective view showing the configuration of a yarn gripping device attached to the suction section of the yarn suction mechanism.
FIG. 7 is a schematic diagram showing the threading operation of the present invention. FIG. 8 is a schematic diagram showing a conventional thread path. DESCRIPTION OF SYMBOLS 1... Machine stand, 2... Draft device, 3... Spinning device, 5... Yarn storage device, 7... Slab catcher, 8... Drum, 9... Cradle mechanism, 1
0... Winding device, 11... Yarn splicing machine, 12... Cart, 13... Yarn storage mechanism, 14... Yarn splicing mechanism,
15... Yarn splicing device, 16... Needle thread conveying means, 17
...Lower thread conveying means, 18... Yarn gripping device, 23
...Roller drive mechanism, 24...Arm, 25...
Roller, 26... Yarn introduction switching guide, 27...
...Bobbin thread pull-in guide.

Claims (1)

[Claims] 1. An upper thread conveying means that suctions the yarn spun from the spinning device as a needle thread and conveys it to the yarn splicing device, and a lower thread that suctions the yarn of the package being wound as a bobbin yarn and conveys it to the yarn splicing device. In a spinning machine equipped with a yarn splicing machine consisting of a conveying means, the yarn splicing device is arranged so that the yarn path DE between the upper yarn path regulation guide position D and the lower yarn path regulation guide position E in the yarn splicing device is twill. A line segment AC that connects the swing fulcrum position A and the position C where the needle thread transport means transports the yarn to the splicing device, and a line that connects the traverse swing fulcrum position A and the position B where the yarn is wound around the drum of the winding device. minutes
Located between AB and the yarn path in the yarn splicing device
DE is installed at a position where the extension line on the side of the upper yarn path regulation guide position D intersects the line segment AB, and the extension line on the side of the lower yarn passage regulation guide position E does not intersect with the line segment AC, and the upper yarn path A thread introduction switching guide is installed close to the regulation guide, and the thread introduction switching guide covers the upper thread guide groove of the upper thread path regulation guide. Introduce the bobbin thread into the thread paths F, D, E, B using the guide so as to pass through the bobbin thread guide groove, and then cover the bobbin thread guide groove with the thread introduction switching guide. Spinning characterized in that when the needle thread is introduced into the thread paths A, D, E, and C through the needle thread guide groove by the needle thread conveying means, the thread splicing device is immediately operated to splice the threads. Mechanical thread splicing machine.