JPS6149211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn supply device for supplying yarn to a textile machine such as a loom at near-low tension and without twisting.

As a yarn supply device for supplying yarn to a textile machine with uniform low tension, yarn from a yarn supply source is temporarily wound around a drum via a yarn guide that goes around the drum. A structure is known in which the yarn is stored and supplied from the drum to the yarn consuming section of the textile machine. However, although this type of conventional device makes it possible to supply yarn uniformly and with low tension, it does not make it possible to supply yarn without twisting. Therefore, it is unsuitable and difficult to use as a yarn feeding device when, for example, a rapier loom or the like is used to feed a flat yarn such as a foil yarn and insert the weft without twisting.

Therefore, the present invention improves the yarn supplying device configured as described above to uniformly and low tension yarns such as flat yarns.
Moreover, it is possible to feed the yarn accurately without twisting, and its main structure is that the yarn guide surrounding the drum is composed of a pair of clamping members that slidably clamp and guide the yarn. In addition, the thread guide is held by a rotor arranged concentrically with the drum, and during one revolution of the rotor, the thread guide is rotated once in a direction opposite to the direction of rotation. be.

The present invention will be described below with reference to the drawings.

In the yarn supplying device shown in FIG. 1, a portion of the yarn temporary storage device, which is the main part of the device, is designated by the reference numeral 1. This temporary storage device 1 consists of a frame 2 installed in a fixed position, a drum 3 for winding yarn that is held in a state in which the axial direction is oriented horizontally so as to protrude in front of this frame 2, and a drum 3 for winding a line. A thread guide 4 that goes around the thread guide 4 is provided. At a fixed position behind this temporary storage device 1, a yarn supply source 5 consisting of a yarn package such as a yarn wound around a bobbin is provided.
is provided. Therefore, the yarn S from the yarn supply source 5
The yarn passes through an appropriate yarn guide 6 in front of it, reaches the yarn guide 4 in the primary storage device 1, and is wound around the drum 3 and temporarily stored by the rotation of the yarn guide 4. It's getting old. Then, the yarn S temporarily wound and stored on the drum 3 is further directed to the yarn consumption point of a textile machine such as a rapier loom (not shown) via appropriate yarn guides 7 and 8 at the front as needed. It is starting to be supplied.
Here, the yarn S is supplied from the yarn supply source 5 to the circulating yarn guide 4 in the temporary storage device 1 in the axial direction of the drum 3, and the yarn S is also supplied from the drum 3 to the consumption point. At this time, the yarn is let out from the drum 3 in the axial direction of the drum 3.

Next, the details of the configuration of the temporary storage device 1 are as follows.
This will be explained with reference to FIGS. 2 and 3.

The temporary storage device 1 includes two rotors 9 and 10, a first rotor 9 and a second rotor 10, which are arranged concentrically adjacent to the drum 3 and have a larger diameter than the drum 3. Part 2
The two rotors 9 and 10 are surrounded by a ring-shaped holding frame 2a provided on the frame 2, and are rotatably held by the holding frame 2a via bearings 11 and 12 such as balls. Moreover, part 2
The two rotors 9, 10 have a bearing 1 between them.
3 are interposed, and each can rotate independently.

One of the two rotors 9, the first rotor 9, is disk-shaped and configured as a gear with teeth 9a carved on its outer periphery. On the other hand, the other second rotor 10 is ring-shaped and has teeth 10a on its outer periphery.
It is configured as a ring gear with teeth 10b carved on the inner periphery.

A shaft 14 passing through the first rotor 9 is rotatably attached to the center of the first rotor 9 via a bearing 15, and a drum 3 is fixedly attached to the front end of the shaft 14. . A small-diameter gear 17 is fixedly attached to the rear end side of the shaft 14.

Further, in the first rotor 9, a hollow threading shaft 18 that passes through the rotor 9 in parallel with the center axis 14 is provided at a predetermined portion offset at a predetermined radial distance from the center of the rotor 9. It is rotatably attached through the At the front end side of the threading shaft 18 that protrudes toward the drum 3 side, there is a clamp made of a pair of leaf spring members etc. that slidably clamps and guides the thread S passing through the inside of the threading shaft 18 from both sides. Members 4a and 4b are fixedly attached, and constitute a thread guide 4 that guides the winding of the thread S around the drum 3 (see FIG. 4).

Further, a small-diameter gear 20 that meshes with the teeth 10b on the inner circumference of the second rotor 10 is fixedly attached to the rear end side of the threading shaft 18. An intermediate gear 21 is provided between the gear 20 fixed to the threading shaft 18 and the gear 17 fixed to the core shaft 14, and meshes with both gears 20 and 17.
The first support shaft 22 has a bearing 23 on the first rotor 9.
It is rotatably attached via the

A notch is provided in the lower part of the link-shaped holding frame 2a of the frame 2, and the first drive gear 24 that meshes with the teeth 9a on the outer periphery of the first rotor 9 and the second rotor 10 are connected in this notch. A second drive gear 25 is provided which meshes with the teeth 10a on the outer periphery.
The first and second drive gears 24 and 25 are integrated with each other and attached to a driving shaft 27 that is rotationally driven by a motor 26.

Therefore, the first and second drive gears 24 and 25 are integrally rotated in the same direction by the rotation of the driving shaft 27 by the motor 26, so that the first and second rotors 9 and 10 are rotated in the same direction. It is designed to be rotated in the direction. At this time, the rotation of the first rotor 9 causes the thread guide 4 to revolve around the drum 3 together with the threading shaft 18 and gear 20. Further, the rotation of the second rotor 10 causes the gear 20 of the threading shaft 18 to be rotated by the teeth 10b on its inner circumference, thereby rotating the thread guide 4 together with the threading shaft 18. The rotation of the gear 20 of the threading shaft 18 is caused by the rotation of the intermediate gear 2.
gear 1 on the shaft 14 to which the drum 3 is attached via 1;
7 will be transmitted.

Here, the teeth of the first drive gear 24 and the first
The ratio of the number of teeth between the teeth 9a on the outer periphery of the rotor 9 and the ratio of the number of teeth between the teeth of the second drive gear 25 and the teeth 10a on the outer periphery of the second rotor 10 are made different. The rotation speed ratio of the second rotor 10 is set to be smaller than the rotation speed of the second rotor 10. As a result, in the relationship between the rotational speed ratio and the tooth number ratio between the teeth of the gear 20 of the threading shaft 18 and the teeth 10b on the inner circumference of the second rotor 10, the first rotor 9 rotates once. , the threading shaft 18 is rotated in the opposite direction to the direction of rotation.
It is assumed that the gear 20 and thus the thread guide 4 are rotated once. In other words, while the first rotor 9 rotates once and the thread guide 4 makes one revolution around the drum 3, the thread guide 4 is rotated once in the direction opposite to the direction of rotation of the rotation. Tsune thread guide 4
is the drum 3 while maintaining the same posture without changing the relative posture of the pair of clamping members 4a and 4b.
It is said to orbit around the

However, in order to do this, if the tooth ratio of the teeth of the gear 20 of the threading shaft 18 and the teeth 10b on the inner circumference of the second rotor 10 is n:m, then The rotation speed ratio of rotor 2 and rotor 10 is m:m-
It is sufficient to set it to n, and it is set like this.

To give an example, for example, the gear 2 of the threading shaft 18
When the ratio of the number of teeth between the first rotor 9 and the inner peripheral tooth 10b of the second rotor 10 is 1:5, the rotation speed ratio between the first rotor 9 and the second rotor 10 is 5:5-1. That is, the ratio may be 5:4, and based on this, the number of teeth in this case can be set, for example, on the gear 20 of the threading shaft 18.
The number of teeth is 12, and the tooth 1 on the inner circumference of the second rotor 10
The number of 0b is 60, and the teeth 9 on the outer periphery of the first rotor 9
The number of a is 70, and the teeth 1 on the outer periphery of the second rotor 10
The number of 0a is 75, and the number of teeth of the first drive gear 24 is
35, and the number of teeth of the second drive gear 25 is set to 30.

Further, the gear 40 of the threading shaft 18 and the gear 17 of the core shaft 14 are set to have an equal number of teeth and a ratio of 1:1. That is, in the case of the above specific example of setting the number of teeth, the gear 17 of the shaft 14 is set to have 12 teeth. As a result, the rotation of the gear 20 of the threading shaft 18 is transmitted via the intermediate gear 21 to the gear 17 of the mandrel 14 in the same direction and speed. Rotation occurs in the opposite direction at the same rotation speed as the rotation of the first rotor 9, so that the gear 17 on the shaft 14 does not rotate even when the first rotor 9 rotates and remains stationary. The shaft 14 and the drum 3 are kept in a stationary state without rotating. In this case, the number of teeth of the intermediate gear 21 is irrelevant and may be set appropriately.

Thus, according to this device, the rear yarn supply source 5
The thread S can be fed to the outer periphery of the drum 3 by passing through the inside of the threading shaft 18, being pinched and guided by the pair of pinching members 4a and 4b of the thread guide 4, and in this way, the thread S is pinched and guided by the thread guide 4. The guided thread S can be wound around the outer periphery of the drum 3 by rotating around the stationary drum 3 due to the rotation of the first rotor 9 of the thread guide 4. In this case, the thread guide 4 clamps and guides the thread S by a pair of clamping members 4a and 4b, and the thread guide 4
The thread S
Each time it is wound around the drum 3, it is always twisted exactly once. Therefore, when the yarn S temporarily wound and stored on the drum 3 is let out from the drum 3 forward in the axial direction, the yarn S is unwound every time it is unwound around the drum. The single twist that occurs in the winding process is canceled out by the twist imparted during the winding process, and in this way the yarn is fed to the yarn consumption point exactly as if it were completely untwisted. This is what you will get. In this case, the thread S is temporarily wound around the drum 3 and stored, and the required amount is supplied from there to the point of consumption as needed, so of course it can be supplied uniformly and with low tension. It is.

Therefore, this device is particularly effective as a device that can supply flat threads such as foil threads uniformly and under low tension to the consumption site accurately without any twisting. It is extremely effective in inserting the weft into a non-twisted state as a weft.

In the figure, reference numeral 28 denotes an auxiliary yarn guide that assists the yarn guide 4 in guiding the yarn S to the drum 3, and is provided as necessary. The auxiliary yarn guide 28 is attached to the first rotor 9 at a position directly in front of the yarn guide 4 and rotates around the drum 3 along with the yarn guide 4. As this auxiliary thread guide 28, various suitable configurations can be used, and
In the illustrated example, a pair of rotatable left and right small flanges 2 are shown.
9 and 29, a plurality of (for example, four) thin rods 30 are placed at appropriate intervals on the periphery of the rods, and the thread S is passed from the thread guide 4 to the thin rods 3.
The yarn S is supplied to the drum 3 while being guided in contact with the yarn crossing 0, and at this time, the twist generated in the yarn S due to the rotation of the yarn guide 4 is smoothly transferred toward the drum 3 by the thin rod 30.

In addition, in the illustrated example, the winding drum 3 has a taper 31 on the outer periphery where the yarn is wound, and the taper 31 prevents the yarn being wound from sliding toward the payout side and becoming multilayered. It is attached and stored,
It is designed to be able to be stretched and fed to the consumption site without difficulty. Further, this drum 3 is a frame-shaped member having an appropriate number (for example, four) of axially extending protrusions 32 formed at appropriate angular intervals on the outer periphery around which the thread is wound. . These things can be done in various ways as needed.

Furthermore, in the present invention, for the purpose of adjusting the winding tension of the yarn S around the drum 3, the drum 3 is not kept stationary, but rotated slightly in the same direction or in the opposite direction to the circumferential direction of the yarn guide 4. In the illustrated example, this can be implemented by suitably setting the tooth ratio between the gear 20 of the thread guide shaft 18 and the gear 17 of the mandrel 14.

Further, in the present invention, the pair of clamping members 4a and 4b in the thread guide 4 may have a mutually symmetrical or asymmetrical shape, and rollers may be provided on either or both of them. Alternatively, the thread may be held and guided by the rollers, and in short, it is sufficient that the thread S is slidably held and guided.

As is clear from the above description, according to the present invention, the thread guide that revolves around the drum is configured with a clamping member at one end that slidably clamps and guides the thread, and the thread guide is arranged concentrically with the drum. By holding the yarn in a rotor that is positioned at the same angle as the rotor, and rotating the yarn guide once in the opposite direction of rotation during one rotation of the rotor, this type of yarn can be supplied uniformly and with low tension compared to conventional methods. This device makes it possible to feed yarn accurately without twisting, which has not been possible with devices designed to do so, and is particularly useful for weft insertion of flat yarns such as foil yarns without twisting on rapier looms. The present invention is very effective as a yarn feeding device that enables the above-mentioned operations, and can be applied to yarn feeding devices for various other textile machines with great benefits.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the device of the present invention, Fig. 2 is a longitudinal sectional side view of the temporary storage device, Fig. 3 is a partially cutaway rear view of the temporary storage device, and Fig. 4. FIG. 2 is a perspective view of the thread guide portion. 1...Temporary storage device, 2...Frame, 2a...
...Holding frame, 3...Drum, 4...Thread guide, 4a,
4b... Holding member, 5... Yarn supply source, 9... First
Rotor, 9a... Teeth on the outer periphery, 10... Second rotor, 10a... Teeth on the outer periphery, 10b... Teeth on the inner periphery, 14... Core shaft, 17... Gear, 18... Threading shaft , 20...gear, 21...intermediate gear, 24...
...First drive gear, 25...Second drive gear, 2
6...Motor, 27...Driving shaft, 28...Auxiliary thread guide, S...Thread.

Claims (1)

[Scope of Claims] 1. Yarn S from a yarn supply source 5 is temporarily wound and stored around a drum 3 via a yarn guide 4 that revolves around the drum, and is sent from the drum 3 to a point of consumption. In the yarn feeding device, the yarn guide 4 is configured with a pair of clamping members 4a and 4b that slidably clamp and guide the yarn S, and the yarn guide 4 is arranged concentrically with the drum 3. 1 of the rotor 9 is held by the arranged rotor 9.
A yarn supply device characterized in that, during rotation, the yarn guide 4 is rotated once in a direction opposite to the direction of rotation.