JPH0681235A - Temporary twisting device - Google Patents

Abstract

PURPOSE: To provide a false twister capable of obviating or reducing a yarn breakage and disc surface wear each caused by contact of a traveling yarn with three sets of overlapping friction discs. CONSTITUTION: This false twister 10 has a 1st spindle 14 and a 2nd spindle 15 mutually connected by a 1st drive belt 17 and mounted on a fixed support 24, and a 3rd spindle 16 is connected to the 1st spindle 14 by a 2nd drive belt and mounted on a movable support 25 which, in turn, is pivotably mounted on the fixed support 14; thereby the 3rd spindle 16 swings about an axis 26 spaced from the axis 19 of the 1st spindle 14 to the opposite side thereof spaced from the axis 21 of the 3rd spindle 16; by such a movement, a yarn can be threaded through actuating the false twister 10 and subsequently the shaft is returned to an actuation position for the purpose of false-twisting the yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a false twisting device, and more specifically, three sets of friction disks are attached to respective spindles, and the spindles are located at the vertices of an isosceles triangle. Discs of the other set of discs overlap each other so that the yarns passing through the false twisting device form a zigzag spiral path so that the yarns come into contact with the edges of the discs and are false twisted. The present invention relates to a false twisting device of the type.

[0002]

BACKGROUND OF THE INVENTION One problem associated with false twisting devices of this type is the problem of threading the false twisting device. One attempted solution to this problem consists of movable teeth or fingers, which are provided with a threading device adapted to move the yarn to the center of the false twisting device. .

Another method is to move at least one shaft relative to the other so that the two sets of disks do not overlap one another, thereby creating a gap.
The yarn can be introduced into the center of the false twisting device through the gap,
Then, when the yarn is threaded, the shaft is returned to the operating position.

This latter method does not allow the use of a simple transmission belt arrangement connecting the three axes of rotation, or requires the provision of means to maintain belt tension as the distance between the three axes changes. It causes another problem.

In the former case, a complicated and expensive drive is required, and in the latter case the belt must be bent back around the tension pulley, which reduces belt life and power consumption. Will increase.

In order to overcome this problem, in many known devices at least one of the shafts is pivoted about the axis of the other shaft so that the relative distance between the movable shaft and the fixed shaft is constant. It is kept in place and is positioned so that the belt can pass around the two axes without the need for tension pulleys. However, even with this relatively simple arrangement, the presence of a complex "bearing in a pivot" device and a large diameter-to-length pivot ratio makes it less than satisfactory and the bearing is premature. Causes wear.

In US Pat. No. 4,485,617, two of the spindles are supported on a common support,
The support is swingably supported about an axis displaced from the axes of these three shafts with respect to a fixed support carrying a third spindle, whereby two of the discs of the set are supported. A false twisting device has been proposed in which the sets are movable to non-overlapping positions and at the same time the drive to the false twisting device is released.

However, even with such an arrangement, the running yarn comes into contact with three sets of initially stationary or slowly moving discs, which are then accelerated as the discs are accelerated to operating speed. Contacts the disc. As a result, the risk of thread breakage during this procedure is very high, and furthermore the risk of the threads abrading the surface of the polyurethane friction disc.

[0009]

OBJECTS OF THE INVENTION It is an object of the present invention to provide a false twisting device in the form of three sets of overlapping discs which is able to eliminate or reduce the drawbacks associated with devices of the known type mentioned above. It is in.

[0010]

According to the present invention, a first set of three friction discs, each mounted on a spindle, is fixed and rotatably supported about axes substantially parallel to each other. And a third drive means for connecting the second spindle and a third spindle, the third spindle being substantially parallel to said first and second axes.
A false twisting device that is rotatable about an axis of and is supported by a support together with a second drive means connecting the first and third spindles, wherein the support is movable and the first Rotatable about a pivot axis substantially parallel to the axis and spaced apart from the third axis, the third spindle being the apex of an isosceles triangle of the three spindles. Located in the above 3
A set of disks are movable in a disk operating position in which they overlap one another and in a threading position in which the second and third spindles are spaced from each other to form a threading gap therebetween. A false twisting device is provided.

Preferably, the first and second drive means rotate the three spindles at substantially the same speed and in the same direction. The first and second drive means may comprise toothed belts.

In the disk operating position, the third axis is
It may be equidistant from the plane containing the first axis and the pivot and equidistant from the plane in the threading position.

The first and second spindles may be supported on a first support on which a movable support is swingably mounted. The first support is provided on the machine frame of the false twisting machine and may slide between the two unit operating positions to rotate the spindle in the opposite direction.
In one of the unit operating positions, the wobble of the first spindle contacts one side of the transmission belt, while in the other unit operating position the wobble of the second spindle contacts the other side of the transmission belt.

[0014]

An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a side view, FIG. 2 is a plan view, and FIG. 3 is a plan view of a drive device.

Referring to the drawings, the illustrated false twisting apparatus 10 includes first, second and third sets of friction discs 1.
The friction disc 11 is composed of 1, 12, and 13.
12 and 13 are carried on first, second and third spindles 14, 15 and 16, respectively. The first drive means is in the form of a toothed belt 17 and comprises first and second
Connecting the spindles 14, 15 of the first and third drive means in the form of a toothed belt 18 and connecting the first and third spindles 14, 16 and thereby the three spindles. 14, 15, 16 rotate about the first, second and third substantially parallel axes 19, 20, 21 in the same speed and in the same direction.

In the disk operating position, the three axes 19, 20, 21 are located at the vertices of an isosceles triangle, as shown by the solid lines in the drawing, and the three sets of disks 11, 1 are shown.
2 and 13 are arranged so as to overlap each other. In this position, the yarn (not shown) runs in the false twisting device 10 from the inlet guide 22 toward the inlet guide 23 (see FIG. 1) along a zigzag spiral path to false twist and is known. It is sent out from the false twisting device 10 by the method.

The first and second spindles 14, 15 are supported by a body 24, on which the axis 1
9 and 20 are fixedly arranged. Third spindle 16
Is supported by a movable support 25, which is itself supported by the body 24 described above and swings about a pivot axis 26 substantially parallel to the axes 19, 20, 21. It is possible. As a result, the third spindle 16 and the disk 13 attached to the spindle 16 can be moved from the disk operating position described above to the threading position shown by broken lines in FIGS. 2 and 3.

In the threading position, the second and third sets of disks 12, 13 do not overlap each other and are spaced apart from each other to form a threading gap 27 therebetween (FIG. 2).
Through the yarn hooking gap 27, the yarn is threaded to the center of the false twisting device 10 and the yarn hooking teeth 37 and the inlet guide 2 are provided.
Introduced by 2. The thread hooking teeth 37 and the entrance guide 22 are provided by a post 38 so as to move together with the movable support 25.

The pivot axis 26 is arranged in the body 24, so that the third axis 21 and the pivot axis 26 are located opposite the first axis 19. Furthermore, the third axis 21 is spaced and opposite to the plane 28 containing the pivot axis 26 and the first axis 19 in the disk actuated position, as compared to when it is in its threading position. Are equidistant from each other. That is, the angles A in FIGS. 2 and 3 are equal. With this arrangement,
The radius of the movement path of the third spindle 16 is larger than the distance between the first and third axes 19, 21 and the belt 1
The working tension of 8 is slightly relaxed and then increased to the working tension as the third spindle 16 moves from the disc working position to the threading position. As a result, slack in belt tension is minimized, thereby minimizing transmission problems and keeping belt life ideal.

The body 24 is slidably mounted on a rail 29 (FIG. 1) so that the wove 30 of the first spindle 14 engages a transmission belt 31 extending along the false twisting machine. The rail 29 is detachable, and the rail 29 is supported by the machine frame 32 of the false twisting machine, whereby the false twisting device 10 is driven by the driving device 31 or released from the driving. Sliding of the body 24 is accomplished by a handle 33 mounted on a rail 29 and having a cam surface 34 that engages the body 24. A spring (not shown) biases the body 24 to engage the wobble 30 with the transmission belt 31 when the handle 33 is lowered from the release position shown in FIG.
Alternatively or additionally, the wove 35 may also be provided on the second spindle 15, a second cam surface 36 is formed on the handle 33, and a change in the spindle position results in a change in the body 24. Are urged in the opposite direction, which causes the warb 35 to engage the transmission belt 31 to change the false twist device from Z twist to S twist, if desired. The order of the disks 11, 12, 13 when the yarns come into contact is 11, 1 as is well known in the art.
It would have to be changed like 3,12.

[0021]

According to the present invention, there is provided a three-axis multi-plate type false twisting device having a simple structure and capable of easily threading yarns, while minimizing the disturbance to the drive means of the disk group. , And guarantees bearing and belt life and minimizes power consumption. In addition, this false twisting device minimizes the tendency of yarn breakage when the yarn is engaged with the friction disc,
It also minimizes scratches on the surface of the friction disc during such engagement.

[Brief description of drawings]

FIG. 1 is a side view.

FIG. 2 is a plan view.

FIG. 3 is a plan view of a drive device.

[Explanation of symbols]

 10 False Twisting Device 11 Disc 12 Disc 13 Disc 14 Spindle 15 Spindle 16 Spindle 17 First Drive Means 18 Second Drive Means 19 Axis 20 Axis 21 Axis 22 Entry Guide 24 Support 25 Support 26 Pivot Axis 28 Pivot Axis 37 tooth

Front Page Continuation (72) Inventor Philip Marsland Wilkinson United Kingdom. Cheshire. cider. Cider Halm. Hilltop Avenue 42

Claims (10)

[Claims] 1. Spindles (14, 15, 1), respectively
6) 3 sets of friction discs (11,
First and second spindles (14, 15), each of which is fixed and is rotatably supported about an axis (19, 20) which is fixed and substantially parallel to each other. Drive means (17) of the third spindle (16) for the first and second axes (19, 2).
0) is rotatable about a third axis (21) substantially parallel to the first and third spindles (14,
16) together with a second drive means for connecting the support (2
5) In the false twisting device supported by 5), said support (25) is movable and said first axis (1)
9) is pivotable about a pivot axis (26) substantially parallel to 9) and spaced apart from said third axis (21), said third spindle (16) comprising: Disc operating position in which the three spindles (14, 15, 16) are located at the vertices of an isosceles triangle and the three sets of discs (11, 12, 13) overlap each other, and the second and third spindles A false twisting device, characterized in that (15, 16) are movable between threading positions where they are spaced from each other and a threading gap (27) is formed therebetween. 2. The first and second driving means (17,
18. The false twisting device according to claim 1, characterized in that 18) rotates the three spindles (14, 15, 16) in substantially the same speed in the same direction. 3. The first and second drive means (17,
The false twisting device according to claim 1 or 2, wherein 18) is a toothed belt. 4. The third axis (21) with respect to the plane (28) containing the first axis (19) and the pivot axis (26) in the disc actuated position with respect to the yarn (28). 4. The false twisting device according to any one of claims 1 to 3, wherein the false twisting device is equidistantly spaced in a direction opposite to that in the hanging position. 5. The first and second spindles (1
5. The method according to claim 1, wherein the movable support (25) is supported by a first support (24) on which the movable support (25) is rotatably supported. False twisting device. 6. A false twisting device for a yarn when a yarn hooking device (37, 38, 22) is moved together with the movable support (25) and the third spindle (16) is moved to a disk operating position. It is provided so that it may guide to the central part of (10), Any one of Claim 1 to 5 characterized by the above-mentioned.
The false twisting device according to the item. 7. False twisting device according to claim 6, characterized in that the yarn hooking device (37, 38, 22) comprises an inlet guide (22). 8. The false twisting device according to claim 6, wherein the yarn hooking device (37, 38, 22) is composed of a large number of teeth (37). 9. A machine frame (3) of a false twisting machine in which the first support (24) is slidable between two unit operating positions.
6. A false twisting device according to claim 5 or any one of the dependent claims, characterized in that the spindle (14, 15, 16) provided in 2) is adapted to rotate in opposite directions. . 10. The wave (30) of the first spindle (14) contacts one side of the transmission belt (31) in one of the unit operating positions and the second spindle in the other unit operating position. 10. The false twisting device according to claim 9, wherein the warb (35) of (15) contacts the other side surface of the transmission belt (31).