JPS6131215B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in an apparatus for crimping thermoplastic synthetic fibers.

More specifically, the present invention relates to a yarn winding device using a fixed sinker and a movable sinker on the outer peripheral surface of a crimping head.

Conventionally, on the outer circumferential surface of the rotatable crimping head,
A movable sinker is arranged between a fixed sinker portion provided with a fixed sinker and each of the fixed sinkers, and an open position in which one end of the movable sinker leaves the space between the fixed sinkers and a closed position in which it engages in the space between the fixed sinkers. The movable sinker is configured to move and the other end of the movable sinker engages the cam to control its movement so that it remains open at one angular position and closed at another angular position during rotation of the crimping head. , the yarn is crimped by introducing the yarn between a movable sinker and a fixed sinker at its open angular position and closing the movable sinker in a direction approximately perpendicular to the axis of the crimping head. The equipment for applying this is well known.

However, with conventional equipment, for example,
As seen in Publication No. 6961, a guide is required to introduce the yarn into the open state of the movable sinker and the fixed sinker, and the guide must be provided between the movable sinker and the fixed sinker.
It was necessary to provide a large gap between the movable sinker and the fixed sinker in the open position. For this reason, the range of movement of the movable sinker has to be increased,
Therefore, the friction between the cam and the movable sinker increased, making it unsuitable for high-speed machining.

An object of the present invention is to eliminate the need for a guide for introducing the yarn between the movable sinker and the fixed sinker, thereby reducing the distance between the movable sinker and the fixed sinker in the open state. Furthermore, since the movement range of the movable sinker can be made small, the friction between the movable sinker and the cam is also reduced, thereby providing a device suitable for high-speed rotation.

For this purpose, the device of the present invention has the following configuration.
A rotatable crimping head has a fixed sinker portion provided with a plurality of fixed sinkers spaced apart from each other in a circular row on the outer periphery of the rotatable crimping head, and a plurality of movable sinkers located in each of the spaces between the fixed sinkers, The movable sinker is configured such that one end of the movable sinker is movable between an open position away from the space and a closed position where the movable sinker fits into the space, and the other end of the movable sinker is configured to engage a cam. By rotating the crimping head, the movable sinker is opened at a certain angular position of the crimping head, and the yarn is introduced between the fixed sinker and the movable sinker, and the movable sinker is opened at another angular position. In this device, the fixed sinker and the movable sinker are arranged opposite to each other with their tips partially overlapping each other, and the fixed sinker and the movable sinker are arranged to face each other with their tips partially overlapping each other. The outer periphery of the movable sinker is made smaller in diameter at the overlapping machining position, is increased in diameter at a position where one end of the movable sinker does not overlap, and is directed from the large diameter position where the one end of the movable sinker does not overlap to the overlapping small diameter machining position. Once upon a time, there was provided a thread winding device in which the fixed sinker was provided with an inclined part so that a conical surface or a similar curved surface for guiding the thread to the processing position was formed on the outer periphery of the fixed sinker part. It is characterized by a compression device.

The details will be explained below according to the drawings.

FIGS. 1A and 1B show an example of a method for manufacturing crimped yarn using the apparatus of the present invention, in which a yarn 1 made of undrawn or semi-drawn thermoplastic fibers is passed through feed rollers 2 and 2'. is supplied at a constant speed, and heated by a heater 4 before entering the crimping device 3.
After being crimped by the crimping device 3, it is wound up by a winding machine 5. In this case, if the yarn path when feeding the yarn to the crimping device 3 is tilted toward the fixed sinker as shown by B, the yarn can easily enter between the movable sinker and the fixed sinker. Further, it is preferable that the thread path when the crimped thread is pulled out from the crimping device 3 is also inclined toward the fixed sinker.

FIG. 2 is a sectional view showing one embodiment of the device of the present invention. The drive shaft 10 has a bearing 11 and a frame 12.
The drive disc 13 is integrally mounted on the drive shaft 10 by means of an implantable key 14. Rotation is transmitted to the crimping head 15 from the driving disk 13 by means of a pin 16. The crimping head section 15 has a fixed sinker section 7' in which fixed sinkers 7 provided with a yarn processing section 8 and a yarn guide section 9 are attached in a circular row at intervals. A movable sinker 6, which can move around a spring-like ring 17 as a fulcrum, is installed in the space between them. The rotating disc cam 18 is rotated by the engagement pin 22 of the crimp head 15 in the same direction as the crimp head. Further, the rotating disc cam 18 is supported by a bearing 19, and the bracket 2
0 is fixed to the frame 12. A groove 21 is formed on the side surface of the rotating disk cam 18 concentrically with the center of rotation.
is provided so as to engage with the movable sinker 6. The center of rotation of the rotary disc cam 18 is eccentric in a certain direction with respect to the center of rotation of the drive shaft 10.

In FIG. 2, when the drive shaft 10 is rotated, the drive disk 13 is rotated, and the crimp head 15 is rotated via the pin 16. Furthermore, the rotation of the crimping head 15 is transmitted to the rotating disk cam 18 by the pin 22, but the rotation center of the rotating disk cam 18 is centered on the drive shaft 10.
Since the crimp head 15 and the rotary disc cam 18 are eccentric with respect to the rotation center, the rotational orbits of the crimp head 15 and the rotary disk cam 18 are shifted from each other. Therefore, for example, as shown in FIG. 2, the upper movable sinker 6 has its other end fixed by a groove 21, and since the groove 21 is located at a lower position than the spring-like ring 17, the movable sinker 6 is The tip lifts upward and is separated from the processed portion 8 that engages with the fixed sinker 7, resulting in a so-called open state. On the other hand, since the rotary disc cam 18 is located below, the movable sinker 6' located at the bottom of FIG. 2 assumes a horizontal position and is in a closed state as it engages with the fixed sinker. In FIG. 2, the yarn to be crimped (not shown) is introduced upward through the open fixed sinker slope 9, and is captured by the yarn processing section 8 as the crimping head 15 rotates. , second
When it reaches the bottom of the figure, it is most deeply crimped. As the crimping head 15 further rotates, the yarn processing section 8 gradually moves toward the open state, so that the trapped yarn is sent out of the system.

3A and 3B illustrate the open and closed states of a movable sinker and a fixed sinker embodying the present invention. When the movable sinker 6 is in the open state A, the length is set so that the tip is separated from the space between the fixed sinkers 7, and the thread is introduced to the thread processing position 8 while sliding on the inclined part 9 of the fixed sinker 7. Create a gap for

FIG. 4 details the introduction of the yarn into the crimping device. The yarn 1 is fed to the crimping device 3 through a yarn path inclined toward the fixed sinker 7. At this time, there is tension in the yarn 1, and when the movable sinker 6 and the fixed sinker 7 are in the open state, there is a gap between the movable sinker 6 and the fixed sinker 7 that allows the yarn to be introduced to the yarn processing position 8 of the fixed sinker 7. Since there is
The thread 1 is guided by the conical surface 9' of the fixed sinker portion 7' and introduced to the thread processing position 8 of the fixed sinker 7. Even when the yarn 1 is crimped and leaves the crimping device 3, it is preferable that the yarn path be inclined toward the fixed sinker 6.

The biggest feature of the present invention is that on the outer periphery of the fixed sinker part,
By providing a fixed sinker with an inclined section so that a conical or similar curved surface is formed for guiding the thread to the processing position. Regarding this, the fifth
This will be explained according to the diagram. FIGS. 5A to 5E are diagrams showing the shape of a fixed sinker that can be used in the present invention. 5A has a shape similar to that shown in FIG. 3, but the fixed sinker 7 has an inclined portion 9 that is inclined toward the tip. The case shown in FIG. 5A is an example in which the fixed sinker has a linear inclined part in the center. By providing such a sloped part in the fixed sinker, the fixed sinker part 7' can be fixed as shown in FIG. A conical surface 9' can be formed on the outer periphery for guiding the thread to the processing position 8. in this case,
Although the angle of inclination α varies depending on the type of yarn introduced, etc., it is preferably kept at about 30 to 60 degrees. Figure 5B
In the figure, an inclined part 9 is provided from the other end of the fixed sinker to the processing position, and in C to E, the inclined part 9 is curved. In the case of C to E, the curved surface 9' formed by the outer periphery of the fixed sinker portion 7' is not a cone, but forms a similar so-called bowl shape or Mt. Fuji shape. Any of these can be used in the present invention, and by providing such a sloped portion for guiding the thread, it becomes possible to guide the thread to the processing position without attaching a thread guide. be. Since the thread is always in contact with the sloped part, it is preferable to use a material that is easy to slip or a surface that is treated to make it slippery.

Since the present invention has the above configuration, it exhibits the following excellent effects.

First, there is no need for a yarn guide in the open state of the movable sinker and fixed sinker, and the range of movement of the movable sinker can be reduced. Therefore, the friction between the movable sinker and the cam is reduced, making it suitable for high-speed rotation.

In particular, this is very advantageous for devices where the distance between the movable sinker and the fixed sinker in the open state cannot be mechanically increased and a yarn guide cannot be provided.

[Brief explanation of the drawing]

Figures 1A and B are schematic diagrams for explaining the method of producing crimped yarn using the yarn crimping device according to the present invention, Figure 2 is a sectional view of the device of the present invention, and Figures 3A and B
4 is a conceptual diagram showing the sinker portion of the present invention, FIG. 4 is a conceptual diagram showing the thread path of the apparatus of the present invention, and FIGS. 5A to 5E are conceptual diagrams showing embodiments of the fixed sinker of the present invention. 1... Thread, 2, 2'... Feed roller, 3...
... crimping device, 4 ... heater, 5 ... winding machine,
6, 6'...Movable sinker, 7...Fixed sinker, 8
...Thread processing part, 9...Slanted part, 9'...Curved surface, 1
0... Drive shaft, 11... Bearing, 12... Frame, 13... Drive disk, 14... Key, 15...
Crimp head portion, 16, 22...pin, 17...spring ring, 18...cam, 19...bearing, 20
... Bracket, 21 ... Groove.

Claims (1)

[Claims] 1. A rotatable crimping head has a fixed sinker portion provided with a plurality of fixed sinkers spaced apart from each other in a circular row on the outer periphery of the rotatable crimping head, and a plurality of movable sinkers located in each of the spaces between the fixed sinkers. , the movable sinker is configured such that one end thereof is movable between an open position away from the space and a closed position fitting within the space, and the other end of the movable sinker is configured to engage a cam. By rotating the crimping head with the crimping head, the movable sinker is opened at a certain angular position of the crimping head, and the yarn is introduced between the fixed sinker and the movable sinker, and the movable sinker is opened at another certain angular position. In the apparatus, the fixed sinker and the movable sinker are arranged to face each other with their tips partially overlapping each other, and the fixed sinker and the movable sinker are arranged facing each other with their tips partially overlapping each other. The outer periphery of the movable sinker is made smaller in diameter at the overlapping machining position, and made larger in diameter at the position where one end of the movable sinker does not overlap,
When one end of the movable sinker moves from the non-overlapping large-diameter position to the overlapping small-diameter processing position, a conical surface or a similar surface for guiding the yarn to the processing position is formed on the outer periphery of the fixed sinker part. A yarn crimping device characterized in that the fixed sinker is provided with an inclined portion.