JPH05195350A - Spinning frame - Google Patents

Abstract

PURPOSE: To enable spinning of high-quality yarn using slivers of fine fineness by arranging stationary gliding surfaces between delivery rollers for transporting the slivers from cans to spinning positions. CONSTITUTION: The stationary gliding surfaces 15, 16, 17, 18 and 20 for supporting and guiding the slivers 8 are arranged apart regulatable distances Z from the tangent line of the respective delivery rollers 12, 13, 11 and 14 between the plurality of delivery rollers 12, 13, 11 and 14 for transporting the slivers 8 in the transporting route of the slivers 8 for forming spun yarn by drawing the plurality of slivers 8 from the cans 5 and 6 in an arrow A direction, transporting the slivers to an inverted V shape in arrow B and C directions and guiding the slivers to the spinning positions of the spinning machine 1. The sliding surface 20 of a downwardly facing section 10 of the transporting route of the inverted V shape is so constituted as to function as a brake surface, by which there is no worry about the occurrence of a defective draft and the smooth transportation is ensured even if the slivers 8 are transported over a long distance.

Description

Detailed Description of the Invention

The present invention relates to several spinning positions for spinning a fiber bundle supplied from a can into yarns, delivery rollers for transporting the fiber bundle to said spinning position, and their transport paths. The present invention relates to a spinning machine equipped with a supporting device.

It is known to feed the textile material to be spun in the form of fiber bundles to a ring spinning machine (GB patent 10).
15780). The fiber bundle is taken out of the can and then pulled out by a roll located above the can,
Further, it is supplied to the spinning position by the transport device. The transport devices each comprise a pair of transport belts, which transport belt pairs receive and transport the fiber bundles therebetween.
The pair of conveyor belts ends just before the stretching device with the pair of delivery rollers engaging the spinning position.

In the previously unpublished German patent application No. 4118379.7, a bundle of fibers to be spun is guided like a roof over a working channel, in which case it is slanted downward into a spinning position. It has been proposed to provide a chute for the section between the two delivery rollers guided towards it.

The object of the invention is to simplify a spinning machine of the type mentioned at the beginning with regard to the conveying device.

This object is achieved in that the device for supporting the fiber bundle has at least one fixed sliding surface, which sliding surface is arranged between the two delivery rollers and away from their tangents.

According to the present invention, if a plurality of delivery rollers are arranged at a certain position, and if the sliding surface prevents the fiber bundles between the delivery rollers from hanging down like a festoon, the fiber bundles can be separated by a large distance. It is premised on the recognition that it can be guided even without a conveyor belt. The extent to which the driving force of the delivery roller is exerted can be adjusted by the distance from the tangent of the sliding surface. When the distance from the tangent is small, this driving force acts less than when the distance from the tangent of the sliding surface is large. Therefore, a compromise must be found with respect to the driving force transmitted from the delivery roller to the fiber bundle and with respect to preventing an excessive sagging of the fiber bundle between the two delivery rollers.

With the device according to the invention, 0.3-0.
Even a thin fiber bundle having a No. 8 fineness can be conveyed without fear of defective draft during conveyance. This makes it possible to dispense with the machines or fryer normally arranged in front of the ring spinning machine. In addition, such a thin fiber bundle achieves higher yarn quality than before, but since there is no flyer twist in the fiber bundle, it is a three-cylinder drawing device for drafts up to 200 times higher. Can be used.

Reasonably, at least three delivery rollers are installed on the conveying path of the fiber bundle, and sliding surfaces are arranged between them. The delivery roller and / or the sliding surface can then be provided with side guides for the fiber bundle. Thereby it is achieved that the fiber bundles are centered on their transport path.

Advantageously, these sliding surfaces can be provided with flutes for guiding the fiber bundle. Therefore,
The fiber bundles will in fact be guided laterally in their entire transport path.

In an advantageous embodiment of the invention, it is provided that the two sliding surfaces meet in a V-shape in the area of one delivery roller forming the highest point of the transport path. In this way, for example, the working path between the can and the spinning machine can be bridged in the shortest distance, and the transport device is unobtrusive to the worker.

In a further configuration of the invention, one section of the transport path is directed downwards and the associated sliding surface is formed as a braking surface. This mild damping prevents the fiber bundles from elongating due to their gravity. This braking action should be present especially when the spinning machine is stopped so that the fiber bundle does not cause a defective draft due to its own weight when the conveyor is stopped. But,
At the start of the spinning machine, the static friction must be overcome, so that in another configuration of the invention it is provided that the braking action of the braking surface can be reduced at the start of the spinning machine.

Other features and advantages of the invention will be apparent from the dependent claims and the following description of some embodiments.

The spinning machine 1 shown in FIG. 1, for example a ring spinning machine, is shown only schematically. It has a number of juxtaposed spinning positions 2, 2'on both machine sides, of which only the respective drawing device 3, 3'is shown. The stretching devices 3, 3'are formed as three-cylinder stretching devices. In front of the spinning positions 2, 2 ', respectively, are working channels 4, 4'for workers. Cans 7, 7'on the other side of the working passages 4, 4 '
Although several rows 5 and 6 and 5'and 6'of are installed, they contain the fiber material spun by the spinning positions 2, 2 '.

The fiber material is supplied to the spinning positions 2, 2'as a fiber bundle 8 produced by a drawing machine. According to the specification selected in FIG. 1, one fiber bundle 8 is drawn from each of the four cans 7 in two rows 5 and 6. In this case, the cans 7 in the subsequent columns 5, 6 are not visible in the drawing.

Since the fiber bundle 8 has a fineness of 0.3 to 0.8 count, it can be drafted to a desired yarn count by the three-cylinder type drawing device 3, 3 '. The inlet rollers of the stretching devices 3, 3'can then be rotated at a very high rotational speed, which guarantees a perfect circular rotation.

The relatively thin fiber bundle 8 is pulled out from the cans 7, 7'in the directions of arrows A, A ', and then in the directions of arrows B, C.
And according to B'and C ', they are guided in a V-shape on the working channels 4, 4', and finally drafted in the respective stretching devices 3, 3 '. From the drawing devices 3, 3 ', the drawn fiber bundles are sent in the direction of arrows D and D'to a twisting device, not shown, such as a ring spindle.

Each transport path has an ascending section 9 and a descending section 10. Between these sections 9 and 10 of the transport path is the highest point formed by the delivery roller 11. There are a total of two delivery rollers 12 and 13 in the ascending section 9, but they are regularly spaced and not too far apart from each other. The delivery roller 12 is then located above the rows 5 and 6 of the cans 7.

In the descending section 10 there is another delivery roller 14, which is followed by a pair of inlet rollers of the stretching device 3. In some cases, another delivery roller, not shown, may be placed just before the stretching device 3.

Delivery rollers 12 and 13, 13 and 11,
Sliding surfaces 15, 17, 18, 20 are provided to support the fiber bundle 8 so that the tensile stresses acting between 11 and 14 and the delivery roller 14 and the stretching device 3 are not excessive. These sliding surfaces 15, 17, 18, 20 are
Two delivery rollers 12 and 13, 13 and 1 respectively
Bridging the gaps between 1, 11 and 14 and the delivery roller 14 and the stretching device 3. This prevents the fiber bundle 8 between the two delivery rollers 12, 13, 11, 14 from hanging down due to its own weight. In any case, the big droop is the delivery rollers 13, 11, 14
Can be prevented by a large feed rate of γ, but a large rate may increase tensile stress and cause defective draft.

A sliding surface 15 formed in the shape of a supporting iron plate
Is at a distance z from the tangent line 16 shown by the dashed line between two adjacent delivery rollers 12 and 13. The same applies to the other sliding surfaces 17, 18, 20. If this distance z becomes large, the delivery rollers 12 and 1
The driving action of 3 is increased accordingly. The smaller the distance z, the greater the sliding friction of the sliding surface 15. Experiments have to determine a convenient compromise, which is influenced in particular by the geometry of the conveying path and the fiber material to be spun.

At the delivery roller 11 forming the highest point of the transport path, the two sliding surfaces 17 and 18 meet in a V-shape. The angle formed by the sliding surfaces 17 and 18 is increased by installing the can 7 not on the floor 19 but on a slightly raised pedestal unlike the figure.

The sliding surfaces 18 and 20 in the section 10 of the conveying device which descends obliquely have a slight braking action so that the fiber bundle 8 cannot stretch. During the normal spinning process, this braking action is of little importance. This braking action should be present so that, especially when the spinning machine 1 is stopped, the fiber bundles 8 to be stopped do not cause defective drafts in the section 10 due to their own weight.

According to FIG. 2, the supporting iron plate forming the sliding surface 215 may be provided with a side guide portion 221. Thereby a total of four or more fiber bundles 8 can be guided, which also contributes to a further simplification of the conveying device. As a modified specification or as a complement, a sliding surface 315 with flutes 322 according to FIG. 3 can be provided, so that each fiber bundle 8 has its own runway.

The delivery roller 412 which directly engages the can 7 as well as the delivery roller 411 which forms the upper deflection guide can be constructed according to FIG. 4, but in this case the individual fiber bundles 8 are guided between the side edges 423. To be done. The delivery rollers 411 and 412 are fixedly mounted on a shaft 424 that penetrates in the machine longitudinal direction. In order to supplement this specification or as a modification thereof, a fiber bundle guide member 25 can be installed above the can 7 according to FIG.

The delivery roller located between the sliding surfaces 15 and 17 is a pure control roller and can be formed as a smooth roller 513 according to FIG. On this delivery roller 513, the fiber bundles 8 are not guided laterally, because they can be sufficiently guided before and after the delivery roller 513.

According to FIG. 6, delivery rollers 11 and 1
The sliding surface provided in the section 10 between 4 and 4 is formed as a so-called corrugated iron plate 618 so that the braking action is enhanced. Since the static friction must be overcome at the start of the spinning frame 1, it may be advantageous for the corrugated iron plate 618 to make a slight swiveling movement away from the fiber bundle 8 only in the tart in a manner not shown.

According to FIG. 7, several sliding surfaces 718 can be installed between the delivery rollers 11 and 14, but their inclination angles with respect to the horizontal can be adjusted independently of each other. This can be achieved, for example, by the stopper 725 and the adjusting rod 726. As a result, the braking action can be adjusted individually according to the textile material used, and furthermore the braking action at the start of the spinning frame 1 can be reduced for a short time, for example by standing the sliding surface 718 almost vertically. It is possible.

[Brief description of drawings]

FIG. 1 is equipped with one spinning machine, and a fiber bundle is supplied from a can to each spinning position,
At that time, the fiber bundle is conveyed from the can to the spinning position by the delivery roller, and a fixed sliding surface is arranged between the two delivery rollers to support the fiber bundle. is there.

FIG. 2 is a cross-sectional view of a sliding surface that guides four side-by-side running fiber bundles with side guides for the outer fiber bundles.

FIG. 3 is a cross-sectional view of a sliding surface having four flutes for guiding four fiber bundles.

FIG. 4 is a diagram of a delivery roller for four fiber bundles with side edges for individual fiber bundles.

FIG. 5 is a view of a delivery roller without side edges for four juxtaposed weaves.

FIG. 6 is a view of a sliding surface formed in a wave shape.

FIG. 7 is a diagram of two stepped sliding surfaces installed between two delivery rollers.

[Explanation of symbols]

 1 spinning frame 2, 2'spinning position 3, 3'drawing device 5, 6, 7 cans 8 fiber bundles 11, 12, 13, 14 delivery rollers 15, 17, 18, 20 sliding surface 16 tangent z distance

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fritz Stahlecker, Federal Republic of Germany 7347 Bato, Uberkingen, Joseph-Nighthardt-Strasse 18 (72) Inventor Hans Stahlecker, Federal Republic of Germany 7334 Zussen, Hardenstrasse 20

Claims (9)

[Claims] 1. Several spinning positions for spinning a fiber bundle supplied from a can into yarn, delivery rollers for transporting the fiber bundle to said spinning position, and supporting the fiber bundle in their transport path. In the spinning machine equipped with a device for supporting the fiber bundle (8), the device for supporting the fiber bundle (8) has at least one fixed sliding surface (15, 17, 18, 2).
0), the sliding surface of which has two delivery rollers (1
Spinning machines characterized in that they are arranged (z) apart from their tangents (16) between 2, 13; 13, 11; 11, 14). 2. Sliding surfaces (15, 1) up to the tangent (16)
7. Spinning machine according to claim 1, characterized in that the distance (z) of 7, 18, 20) is adjustable. 3. At least three delivery rollers (11, 12, 13, 14) are installed on the conveying path of the fiber bundle (8), and between them, sliding surfaces (15, 17, respectively) are provided.
The spinning machine according to claim 1 or 2, characterized in that 18, 20) are arranged. 4. Delivery roller (412) and / or sliding surface (215) is provided with side guides (423; 221) for the fiber bundle (8), according to any one of the preceding claims. Spinning machine. 5. Spinning machine according to any of the preceding claims, characterized in that the sliding surface (315) is provided with longitudinal grooves (322) for guiding the fiber bundle (8). 6. One delivery roller (11), in which the two sliding surfaces (17, 18) form the highest point of the transport path.
The spinning machine according to any one of claims 1 to 5, wherein the spinning machine has a V shape and meets in the range. 7. One of the claims 1 to 6, characterized in that one section (10) of the transport path is directed downwards and the associated sliding surface (618) is formed as a braking surface. The described spinning machine. 8. Spinning machine according to claim 7, characterized in that the braking action of the braking surface can be reduced at the start of the spinning machine (1). 9. A section (1) of a conveying path directed downward.
0), several preferably individually adjustable sliding surfaces (718) have two adjacent delivery rollers (1).
8. It is arranged between 1, 14).
Or the spinning machine according to item 8.