JPS6244060B2 - - Google Patents

Description

Detailed Description of the Invention The continuously supplied fiber bundles are separated and drafted by a drafting device, and the fiber bundles are sent out from the drafting device into flat ribbon-like fiber bundles called fleece. the twisting device forms a swirling air flow in the path of the fiber bundle with a minute velocity in the feeding direction of the fiber bundle to impart a swirling motion to the fiber bundle by the drawing rollers of the false twisting device. A twisting action is applied to the fiber bundle between a gripping point by a roller device on the downstream side of the drafting device and a twisting point of the swirling air flow, and the twisting action is applied to the fiber bundle between the twisting point of the swirling air flow and the twisting By applying an untwisting action to the gripping point of the pull-out roller of the device, the main fibers in the center are composed of a fiber group with almost no twist, and a small number of free fiber groups are added to the main fibers by the above-mentioned turning. The theory of bundle spinning, which forms bundle yarns wound in a direction opposite to the rotational direction upstream of the twisting point of the air flow, is well known.

In contrast to ring spinning, in which the fiber bundle is twisted one time by one revolution of a traveler carried by a yarn package cage, the above-mentioned bundle spinning uses a twisting device to apply a swirling air flow to the fiber bundle. Since the fiber group is wrapped around the main fiber and bound by itself, there is no factor that limits productivity such as rotation of the yarn package, and the spinning speed is significantly improved compared to ring spinning.

By the way, in order to put the above-mentioned bundle spinning into practical use, there are various problems that need to be solved in the spinning apparatus. In other words, in binding spinning, a swirling air flow gives a swirling motion to a drawn ribbon-shaped fiber bundle by arranging fibers in parallel, and winds a small group of free fibers around a group of untwisted main fibers in the center. Ideally, all the fibers in the fiber bundle should form a yarn as the main fiber group and the fiber group that causes binding, but in reality, some fibers Together with the short fibers, they are separated from the fiber bundle by the swirling air flow and are scattered outside the twisting device by the air flow blown out from the twisting device. On the downstream side of the twisting device, there is still an incompletely bundled fiber bundle between the point of action of the swirling air flow of the twisting device and the pull-out roller, so that the detached fibers are There is an extremely high risk of entanglement in the fiber bundle, and if the entanglement of the scattered fibers occurs, the quality of the yarn will be significantly impaired. In addition, when yarn breakage occurs during spinning, the free end of the fiber bundle drafted by the drafting device is inserted into the twisting device and spliced. A large amount of fibers are ejected from the twisting device, and if the ejected fibers are mishandled, not only will they become entangled in the fiber bundle being tied, but the fibers may also become entangled in rotating parts or yarn packages.

Furthermore, due to the high speed spinning compared to ring spinning,
The generation of sliver spots and fluff due to high-speed running of the sliver in the draft device also poses problems that cannot be ignored. That is, when the speed of the sliver supplied to the draft device via a guide etc. is increased,
If the sliver has a long running stroke or if there are many direction changes while the sliver is running, the tension and frictional resistance applied to the sliver will increase depending on the length of the stroke and the number of direction changes, creating uneven thickness of the sliver. Since this may cause illegal drafting, it is necessary to shorten the travel path of the sliver as much as possible and to avoid changes in direction. In addition, as the draft speed increases, the rotational speed of each roller also increases, and the accompanying airflow accompanying the rotation of each roller also becomes stronger, so care must be taken to prevent the fluff generated by the accompanying airflow from getting caught in the running yarn or yarn package. There is a need.

In addition to the essential problem of spinning equipment, which is solving problems that adversely affect yarn quality as mentioned above, it is important for workers to perform yarn splicing and doffing operations, just like in general spinning equipment. Practical consideration is required from the aspect of operational stability, such as easy automation of these operations and ease of automation equipment.

The inventors of the present invention have comprehensively considered the above-mentioned problems and have conducted repeated research. As a result, we have found that the basic principles of a binding spinning device that produces binding yarn by applying swirling airflow to fiber bundles in a twisting device are as follows. By supplying the fiber bundle from below to the twisting device and pulling out the spun yarn above the twisting device, the fibers separated from the fiber bundle by the swirling air flow are removed while the fibers are being bundled. Binding spinning not only eliminates entanglement in fiber bundles and makes it easy to dispose of the fibers ejected during splicing, but also minimizes the occurrence of uneven thickness of the sliver by minimizing the traveling distance of the sliver. We have discovered the fact that the device yields desirable results in all aspects.

As described above, the present invention facilitates the supply of fiber bundles in a binding and spinning device, minimizes the occurrence of uneven thickness, improves the yarn quality of the formed binding yarn, and improves the quality of the fiber bundles. The object of the present invention is to provide a practical device that is easy to perform operations such as feeding, piecing, and doffing, and has good workability.

The drawings show one embodiment of the invention,
FIG. 1 shows an embodiment in which spinning devices for one spindle are disposed on each side of the machine base, and FIG. 2 shows a partially cutaway side view of the main part.

In FIG. 1, a base 1 is installed on a floor 10, has a longitudinal direction perpendicular to the plane of the paper, and the spinning apparatuses of the present invention are symmetrically provided on both sides of the base 1.
A recess 4 is formed on both sides of the base 1 and has a height greater than the height of the can 3 when the can 3 containing the sliver 2 is placed on the floor 10, and a draft device 5 is provided above the recess 4. Further, an inclined mounting portion 7 whose upper portion is inclined inward of the base 1 is formed to which the twisting device 6 is mounted. A winding roller 8 is rotatably provided on the top of the base 1, and comes into contact with a package 9 of the formed binding yarn to wind it up.

The draft device 5 includes a conventional back roller 11 (hereinafter referred to as the first roller) on the upstream side, a Casablanca-type middle roller 12 using a synthetic rubber apron, and a conventional front roller 1 on the downstream side.
3 (hereinafter referred to as the third roller), and is arranged so that the first roller 11 is positioned at the lower end of the inclined mounting portion 7.

The twisting device 6 consists of a hollow cylindrical device main body 14 and a pull-out roller 15, which are arranged at a height around the neck of the worker who is standing upright while working.
As shown in cross section in FIG. 2, the device main body 14 has one end in the axial direction located very close to the third roller 13 of the draft device 5, and expands toward the gripping point of the third roller 13. An inlet 16 that opens is formed, and the inlet 16 is opened from the other end in the axial direction.
A cylindrical body 18 having a passage 17 with a circular cross section that smoothly connects to the cylindrical body 18 is inserted and fixed, and a pressure chamber 19 is carved in an annular shape around the cylindrical body 18 to provide a pressure air source (not shown). An air supply passage 20 communicating with the pressure chamber 19 is connected to the pressure chamber 19, and the angle projected onto a plane that faces downstream of the passage 17 from the pressure chamber 19 and includes the central axis of the passage 17 is an appropriate inclination. (for example, 45 degrees), and a plurality of twisting jet passages 21 are opened at appropriate intervals in the cylindrical wall of the passage 17 so as to circumscribe the passage, and the pressurized air from the pressurized air source is transferred to the pressure chamber. 19 into the passage 17 to form a swirling air flow. The pull-out roller 15 is rotatably provided above the inclined mounting portion 7 of the base 1 on the downstream side of the main body 14 of the apparatus.

When using the apparatus of the embodiment, the sliver 2 housed in the can 3 is supplied to the first roller 11 of the drafting device 5 located directly above it through an extremely short stroke, and is gripped by the middle roller 12 and the third roller 13. As it advances, it is separated and pulled to form the flat ribbon-shaped fleece 22 as described above, and is supplied from the third roller 13 to the inlet 16 of the device main body 14 of the twisting device 6. Sliver 2 as above
By supplying the sliver from the can 3 to the drafting device 5 located directly above it, the cause of tension in the sliver that causes thickness unevenness is extremely reduced, and the fluff generated from the drafting device 5 is
At higher positions, there is a very low possibility that the yarn will become entangled with the yarn running or adhere to the yarn package 9.

In the device main body 14, the pressurized air jetted into the passage 17 from the twisting jet passage 21 via the air supply passage 20 and the pressure chamber 19 forms a swirling air flow within the passage 17, and The swirling air flow has a velocity component force that sucks the fleece 22 supplied to the inlet 16 into the passage 17 since the twisting jet passage 21 is inclined toward the downstream side. Therefore, the fleece 22 is guided into the passage 17, and further gripped by the pull-out roller 15 and pulled out. The fleece 22 has the swirling air flow at an intermediate position between a gripping point by the third roller 13 located downstream of the drafting device 5 and a gripping point by the pull-out roller 15 located downstream of the twisting device 6. A twisting action is applied by a rotational speed component, and the material is rotated so that twisting is applied in opposite directions on the upstream and downstream sides of the twisting action point. For example, if Z-twist is applied to the fleece 22 on the upstream side between the twisting point and the gripping point by the third roller 13, the fleece 22 between the twisting point and the gripping point by the pull-out roller 15 is rotated so that the S twist is applied.

Therefore, the fiber group located at the center of the fleece 22 between the gripping point by the third roller 13 of the drafting device 5 and the twisting point by the twisting device 5 has Z.
Twisting is applied, but fibers with a large degree of freedom included in the fiber group located at the edge of the fleece 22 (for example, fibers with one end bound in the fiber group and the other end not restrained) are less twisted. While the fiber group at the center is untwisted from the twisting point to the gripping point by the pull-out roller 15, the fibers with a large degree of freedom are untwisted at the center. wrapped around the fiber group (main fiber),
A binding thread 23 is formed.

The formed binding yarn 23 is traversed by a take-up roller 8 and wound around a package 9. The package 9 with the desired amount of binding yarn 23 wound thereon is placed on the base 1.
is transferred to a belt conveyor 24 disposed at the top of the base 1 and carried out to the outside of the base 1.

During the twisting of the fleece 22 by the above-mentioned twisting device 6, a small portion of the fibers and short fibers in the fleece 22 are separated from the fleece 22 by the pressurized air jetted from the twisting jet passage 21 into the passage 17. may be ejected from the downstream opening end of the passage 17 to the outside of the twisting device 5;
When the swirling air flow giving a swirling motion inside the passage 17 is ejected from the downstream opening end of the passage 17, it diffuses and loses its speed. Therefore, the fibers ejected together with the swirl air flow diffuse down due to their own weight, and The possibility of tangles with the fleece 22 during the bundling process via 17 to the pull-off roller 15 is significantly reduced.

In addition, at the time of splicing, immediately after the end of the fleece 22 drawn by the drafting device 5 is supplied to the passage of the twisting device 6, the fibers at the end of the fleece 22 are separated by the swirling air flow, and the fibers at the end of the fleece 22 are separated by the swirling air flow. These fibers may eject from the downstream end, but since these fibers contain long fibers, some of them are incompletely bound and have a large weight, they quickly fall to the top of the main body 14 of the twisting device 6. Since the fibers are deposited in such a manner that they can be easily removed by an operator, there is little risk that these fibers will scatter or fall outside. A similar jetting of fibers occurs when the sliver is supplied to the drafting device 5 for first spinning, but these jetted fibers are also deposited on the upper part of the main body 14 of the twisting device 6 like when splicing yarn, so they are removed. is easy. At the time of starting spinning and splicing, the bundled yarn 23 spun by the twisting device 6 is directly wound around the package 9 without being gripped by the yarn take-out roller 15. While in contact with the outer surface, the pull-out roller 1 is
It will be automatically grasped within 5 minutes.

The above embodiment device was explained with reference to a single spindle binding and spinning device, but the drafting device 5, the twisting device 6,
A large number of devices consisting of a winding roller 8 and a package cage 9 are installed in parallel on one side of the base 1, and a large number of devices are installed in parallel on both sides of the base 1 as shown in FIG. This can be carried out without impairing workability and without significantly increasing the size of the base 1, making it possible to reduce the installation area for a given number of spindles of the spinning device.

In the present invention, after a continuously supplied fiber bundle is separated by a draft device, a swirling air flow is applied between a roller device downstream of the draft device and a pull-out roller device of a twisting device to twist the fiber bundle. In a spinning device for bundling, there is provided a base whose front lower part has a shape corresponding to a can that accommodates the fiber bundles, and a roller device on the upstream side that receives the fiber bundles is attached to the base below, and a fiber separating device is provided. a drafting device disposed above a downstream roller device for sending out the pulled fiber bundle; The twisting device is disposed above the device with the pull-out roller device for pulling out the twisted and bundled yarns positioned above the introduction port, and the twisting device is disposed on the top of the base. and a winding roller for the yarn, it facilitates the supply of the fiber bundle, minimizes the occurrence of uneven thickness, improves the yarn quality of the formed binding yarn, and furthermore The object of the present invention, which is to improve workability, can be achieved.

That is, in the present invention, by forming the lower front part of the base into a shape corresponding to the can, the fiber bundle stored in the can can be supplied from below to the roller device on the upstream side of the drafting device over the shortest distance, and the fiber bundle can be fed from below to the roller device on the upstream side of the drafting device. Since it is possible to shorten the traveling path of the fiber bundle as much as possible and avoid changing the direction of the fiber bundle as much as possible, the elements that apply tension to the fiber bundle can be significantly reduced and the thickness can be increased. It is possible to avoid the occurrence of spots, and in turn, it is possible to avoid the occurrence of fraudulent drafts.

In addition, since the introduction port of the twisting device is located close to the roller device on the downstream side of the drafting device and positioned above the roller device, the fiber bundle drawn from the can and separated and drawn by the drafting device is spun at the beginning. This allows the yarn to be easily fed to the twisting device and shortens the traveling distance until it is tied. The yarn is then twisted between the point of action of the swirling air flow in the twisting device and the pull-out roller device to form a binding yarn, which is then wound onto the package cage via a winding roller disposed at the top of the base. However, due to the swirling air flow in the twisting device, some fibers and short fibers in the fiber bundle may separate from the fiber bundle and be ejected from the swirling air flow action section of the twisting device together with the swirling air flow. However, the above-mentioned ejection of fibers is carried out against gravity and is diffused as the swirling airflow spreads, so that the ejected fibers are absorbed into the fiber bundle being guided upward by the pull-out roller and being bundled. There is very little risk of the yarn becoming entangled and damaging the quality of the yarn.

Furthermore, at the time of first spinning or splicing, separated fibers are ejected from the ends of the fiber bundle by the swirling airflow of the twisting device. Since it has a large self-weight in the shape of a twisting device, it is easily removed by being deposited on the outer casing of the device that forms the swirling air flow of the twisting device, and there is no risk of it being entangled in the binding yarn. Few. The fly fluff generated by the accompanying airflow generated by the rotation of the roller device of the drafting device exists below the fiber bundle that is being bundled across the twisting device, so that the fluff adheres to the binding threads and the yarn package cage. There is almost no possibility of it happening.

As mentioned above, there are problems with spinning equipment in which the fibers that are detached or separated from the fiber bundle supplied from the can are entangled in the bundled yarn being spun, or adhere to the package cage of the bundled yarn, which adversely affects yarn quality. Regarding the essential problem, the present invention has a structure in which the twisting device is centered on the base, the draft device and the fiber bundle supply can installation location are arranged below in order, and the winding roller is arranged above the twisting device. As a result, the fiber bundle is advanced from the bottom to the top, twisted, and spun into bound yarn, and the fibers ejected from the twisting device are stalled immediately after ejection due to their own weight, and the spun yarn and winding are The quality of the spun yarn is improved because it is prevented from tangling or adhering to the yarn package being wound through the rollers.

When a draft device, a twisting device, and a winding roller are sequentially arranged upwardly on a base whose front lower part has a shape corresponding to a can, so as to minimize the traveling distance of the fiber bundle, The device is located between the chest and neck of the worker while working in an upright position, making it extremely easy for the worker to perform splicing and doffing. Since there is no equipment in the base that is subject to any restrictions between it and the floor, a large space can be formed within the limits that maintain the strength of the base. By arranging this, it is possible to improve the operability of bound spinning, such as the operator's handling of cans, handling of fiber bundles, and threading of fiber bundles into draft devices.

Furthermore, when installing an automatic yarn splicing device or automatic doffing device that automates yarn splicing and doffing operations, the movable parts of the automatic device should be designed to be located above the part where the twisting device is installed. There are very few spatial constraints, and automatic operation can be monitored by a worker standing upright. Also, when installing the automatic device, it does not affect the placement location of the can.

As described above, the present invention takes into consideration the special characteristics of the binding and spinning device that causes swirling airflow to act within the twisting device.
This is a functional and practical invention that takes into consideration the impact on yarn quality, functionality, operability, and even space utilization.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is a partially cutaway side view of the main part thereof. In the figure, 1 is a base, 2 is a sliver, 3 is a can, 5 is a draft device, 6 is a twisting device, 14 is the main body of the device, 15 is a pull-out roller, 22 is a fleece, 23 is a binding thread, Reference numeral 8 indicates a winding roller, and reference numeral 9 indicates a package.

Claims (1)

[Claims] 1. After the continuously supplied fiber bundle is separated by a draft device, a swirling air flow is applied between a roller device on the downstream side of the draft device and a pull-out roller device of a twisting device. A spinning device for twisting and bundling at least includes a base whose front lower part has a shape corresponding to a can that accommodates the fiber bundle, and a roller device on the upstream side that receives the fiber bundle supplied to the base and which is arranged downwardly. a draft device disposed above a downstream roller device for sending out the separated and pulled fiber bundle; the twisting device, which is disposed close to and above the roller device, with the pull-out roller device for pulling out the twisted and bundled yarn being positioned above the introduction port; A binding and spinning device comprising: a winding roller for the yarn arranged at the top.