JP2007191821A - Spinning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spinning device which can stably and surely supply compressed air not containing foreign matters, dusts, and the like to a spinning nozzle having small diameter compressed air-jetting holes over a long period. <P>SOLUTION: This spinning device is characterized by detachably mounting air filter members 4, 4A in the compressed air-jetting hole inlet portion of an air reservoir 5, of a spinning nozzle 1 equipped with the compressed air-jetting holes 10 through the air reservoir 5 connected to an air supply pipe. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spinning device including a spinning nozzle that performs spinning by injecting compressed air.

  Conventionally, as a spinning device, a fiber bundle (also referred to as a sliver) is drafted by a draft device composed of a plurality of draft roller pairs, and then arranged in series downstream of the draft device to generate swirling airflows in opposite directions. There is known an air spinning device that performs false twist spinning using a spinning nozzle composed of a first nozzle and a second nozzle.

  Further, a swirling flow is generated around the tip of the hollow guide shaft body by compressed air injected from the spinning nozzle, and fibers are separated from the fiber bundle sent from the draft device using this swirling flow, There is also known a spinning device that twists fibers in a turning direction to spin a real twisted yarn.

  In any of the above spinning apparatuses, the compressed air supplied through the air pipe is injected from the compressed air injection hole, and the fiber bundle is twisted by the generated swirling flow, or the fiber bundle is swirled to perform spinning. It is said.

  Therefore, in order to spin a good quality yarn, it is important to always inject a stable swirl flow correctly toward the fiber bundle. Further, it is desirable that no dust is mixed in the compressed air itself, and no dust is mixed in the supplied fiber bundle.

  In general, when supplying compressed air, compressed air from a compressed air supply source such as an air compressor is sent through an air filter or an oil filter, and is supplied as clean air from which dust and oil are removed. For this purpose, the compressed air as it is is usually supplied directly to a large number of spinning devices via air piping members or the like.

  However, these air piping members may be worn out and the inside may be deformed or corroded to generate foreign matters. In addition, dust such as abrasion powder may be generated when removing or attaching during maintenance or replacement of parts.

The present applicant has already filed a spinning device that includes a nozzle member and discharges foreign matter to the outside (see, for example, Patent Document 1).
JP 2000-136443 A (page 1-5, FIG. 2)

  The spinning nozzle provided in the pneumatic spinning device has a structure in which small compressed air injection holes having a diameter of 1 mm or less are equally arranged on a plurality of circumferences, so that foreign matter, dust, etc. can be found in one of the plurality of injection holes. When clogged, the airflow swirling the fibers will be disturbed.

  If the swirl airflow is disturbed, the balance of the jet energy swirling the fiber bundle is lost, the swirl energy becomes non-uniform, and the yarn structure changes or weak yarns are generated. In addition, if a change in the yarn structure or weak yarn occurs, it may cause yarn breakage in a subsequent process and may cause dyeing spots on the fabric. That is, the physical properties of the yarn obtained by spinning become unstable, causing a problem that a high-quality spun yarn cannot be manufactured.

  Therefore, it is necessary not only to remove foreign matter and dust at the spinning point, but also to prevent foreign matter from clogging or accumulating in the nozzle portion that injects compressed air over a long period of time.

  In view of the above problems, an object of the present invention is to provide a spinning device that can stably and reliably supply compressed air that does not contain foreign matters or dust to a spinning nozzle having a small-diameter compressed air injection hole over a long period of time. It is to be.

  In order to achieve the above object, the invention according to claim 1 is a spinning device including a spinning nozzle that performs spinning by injecting compressed air, wherein the spinning nozzle is connected to an air reservoir connected to an air supply pipe. Further, the compressed air is injected from the compressed air injection hole, and an air filter member is detachably disposed at the inlet of the compressed air injection hole of the air reservoir.

  According to the first aspect of the invention having the above-described configuration, even if foreign matter is mixed in the air pipe, the air filter member attached to the compressed air injection hole captures the foreign matter, and enters the foreign matter air injection hole. Can be prevented from entering.

  The invention according to claim 2 is a spinning nozzle in which the spinning nozzle spins spun yarn by causing a swirling airflow to act on a fiber passage having a circular cross section, such as on a circumference in a tangential direction of the fiber passage. It is characterized in that an air filter member that integrally covers a plurality of compressed air injection holes that are arranged is provided.

  According to the invention concerning Claim 2 which has the above-mentioned composition, a plurality of compressed air injection holes provided annularly can be integrally sealed with one air filter member.

  The invention according to claim 3 is a porous sponge filter in which the air filter member permits passage of compressed air but does not allow passage of dust of a size clogged in the compressed air injection hole. It is characterized by that.

  According to the invention according to claim 3 having the above-described configuration, spinning is performed by injecting compressed air that does not include foreign matters such as dust, so that a spun yarn with stable yarn quality can be manufactured.

  The invention according to claim 4 is characterized in that the size of the gap is not more than half of the maximum width of the compressed air injection hole.

  According to the invention according to claim 4 having the above-described configuration, the foreign matter that may be clogged in the air injection hole can be reliably captured, and the foreign matter that passes through the gap is directly ejected from the nozzle hole to the outside. Can be discharged.

  The invention according to claim 5 is configured such that the spinning nozzle is screwed between an inner cylinder having the compressed air injection hole and an outer cylinder to which the air supply pipe is mounted, and the inner cylinder and the outer cylinder are When screwed together, the air reservoir is formed around the air injection hole, and when the sponge filter is mounted, the inner cylinder and the outer cylinder are elastically pressed by the screwing operation, A sponge filter is configured to be in close contact with the compressed air injection hole.

  According to the invention according to claim 5 having the above-described configuration, the air filter member can be freely attached and detached by an operation of attaching and detaching the inner cylinder and the outer cylinder constituting the spinning nozzle, and maintenance operations such as member replacement and cleaning are easy. Can be done. Further, by screwing the inner cylinder and the outer cylinder, the air filter member can be reliably fixed at a position where the compressed air injection hole is sealed.

  As described above, according to the present invention, since the air filter member is detachably disposed at the inlet of the compressed air injection hole of the air reservoir of the spinning nozzle, it prevents foreign matter from entering the air injection hole. Thus, it is possible to produce a spun yarn having a stable yarn quality by passing only compressed air necessary for spinning that does not include foreign matters.

  Hereinafter, embodiments of a spinning device according to the present invention will be described in detail with reference to FIGS.

  First, a spinning machine M to which the present invention is applied will be described with reference to FIG. The spinning machine M has a configuration in which a large number of spinning units U are arranged, and the sliver L is sent to the draft device DR and spun into the spun yarn Y by the spinning device Sp. The produced spun yarn Y is wound around the winding portion WR via the nip roller Rn, the slab catcher Z, and the like to form a package PW. P is a yarn splicing device that performs yarn splicing, and is configured to travel along the longitudinal direction of the spinning machine M below the inside of the spinning machine M.

  Further, as shown in FIG. 4, each spinning unit U has a sliver L housed in a can K placed at the rear of the machine base, after the guide G passes through the trumpet T and is conveyed to the draft device DR. A structure in which the yarn is passed through a roller draft portion where the feed rate is gradually increased and drawn to a predetermined fineness, and is spun into a spun yarn Y by the spinning device Sp, and is wound on the winding portion WR on the front surface of the machine base to form a package PW It is.

  The spinning device Sp is formed of an air spinning device including a spinning nozzle and a hollow guide shaft body capable of spinning at a spinning speed of 300 m / min or more. However, the spinning device Sp is not limited to this. A spinning device having a pneumatic spinning nozzle may be used. Further, a spinning device including a spinning nozzle and a pair of additive rollers capable of spinning at a spinning speed of several hundred m / min may be used.

  Next, a configuration of a spinning machine including the spinning device according to the present invention will be described with reference to FIG.

  As shown in the figure, the draft device DR is a so-called four-wire draft device composed of a back roller Rb, a third roller Rt, a middle roller Rm having an apron belt E, and a front roller Rf. The rollers are arranged along the feeding direction.

  The draft device DR is a device that stretches the sliver L supplied through a trumpet T, which is a guide for inserting the sliver, to a predetermined thickness, and gradually increases the rotational speed of each roller from the upstream side toward the downstream side. Draft is performed by sending sliver L while increasing. The sliver L drafted to a predetermined fineness is supplied to the spinning device Sp and formed on the spun yarn Y in the spinning device Sp.

  Each of the pair of upper and lower rollers constituting each roller is composed of a bottom roller serving as a lower roller disposed on the main body frame side of the spinning machine, and a top roller configured to be able to contact and separate from the bottom roller. It is configured.

  That is, the front roller Rf includes a front top roller Rf1 and a front bottom roller Rf2.

  Next, the spinning device according to the present invention will be described in detail with reference to FIGS.

  The spinning device Sp includes a spinning nozzle 1 and a hollow guide shaft body 3, and injects compressed air from a compressed air injection hole 10 onto a sliver L fed by a front top roller Rf1 and a front bottom roller Rf2. This is an apparatus for generating spun yarn Y.

  A plurality of compressed air injection holes 10 are arranged on the circumference equally in the tangential direction of the circular fiber passage 11, and are inclined in the feed direction of the sliver L. The spun yarn Y is generated by causing a swirl airflow to act on the sliver L fed through 11.

  The produced spun yarn Y passes through the hollow guide shaft body 3 and is wound as a package PW by the winding portion WR described above. The injected compressed air is discharged to the outside from the air passage 12 around the hollow guide shaft body 3.

  The spinning nozzle 1 includes an inner cylinder 2A in which a compressed air injection hole 10 is disposed, and an outer cylinder 2B that is screwed into the inner cylinder 2A. Further, when the inner cylinder 2 </ b> A and the outer cylinder 2 </ b> B are screwed together, an air reservoir 5 is formed around the air injection hole 10.

  The inner cylinder 2A and the outer cylinder 2B are configured so as to be integrated by a screw part 13 for screwing a male screw part provided on the outer peripheral part of the inner cylinder 2A and a female screw provided on the inner side of the outer cylinder 2B. Further, when screwing, sealing members 14 and 15 such as rubber rings are attached to seal the air reservoir 5. An air supply pipe 6 for supplying compressed air to the air reservoir 5 is attached to the outer cylinder 2B.

  In the present embodiment, the air reservoir 5 is provided with the air filter members 4 and 4A. The air filter member 4 shown in FIG. 1 (a) is a relatively small air filter member of the first embodiment having a size that can be accommodated in a part of the air reservoir 5, and is shown in FIG. 1 (b). The air filter member 4 </ b> A shown in FIG. 4 is an air filter member according to the second embodiment that is large enough to fit into the air reservoir 5. Each of the air filter members 4 and 4A is a porous sponge filter that integrally covers a plurality of compressed air injection holes 10 arranged in an annular shape and forms a void portion that communicates the members. It is made up of a member that allows the air to flow but does not allow the passage of dust that is clogged in the compressed air injection hole.

  In order to attach the air filter members 4 and 4A, the inner cylinder 2A and the outer cylinder 2B are fixed by an operation of screwing, and the inner cylinder 2A and the outer cylinder 2B are separated. Thus, the air filter members 4, 4A can be removed. Therefore, as shown in FIG. 2, when the inner cylinder 2A and the outer cylinder 2B are unscrewed and separated, the air filter members 4, 4A and the sealing members 14, 15 can be removed.

  Since it is configured as described above, the air filter members 4 and 4A can be freely attached and detached by an operation of attaching and detaching the inner cylinder 2A and the outer cylinder 2B, and maintenance operations such as member replacement and cleaning can be easily performed. it can. Further, in order to be detachable, the air filter members 4 and 4A have a cylindrical shape that can be fitted into the tip of the cylindrical inner cylinder 2A. Since the air filter members 4 and 4A are sponge filters and have elasticity, the compressed air injection hole is set in advance by setting the inner diameter slightly smaller than the outer diameter of the distal end portion 2Aa of the inner cylinder 2A to be mounted. 10 can be adopted. Further, the length of the filter member is also set to a length that allows it to be stored tightly or slightly longer when the inner cylinder 2A and the outer cylinder 2B are screwed together, thereby sealing the periphery of the compressed air injection hole 10. And can be fixed to the air reservoir 5.

  If it is the above structures, when filter member 4 and 4A are inserted in tip part 2Aa of inner cylinder 2A, and outer cylinder 2B is screwed together, said filter member 4 and 4A will seal said compressed air injection hole 10 with. It is installed to do.

  In addition, since the air filter members 4 and 4A are porous sponge filters that form gaps communicating with the members, the compressed air supplied through the air supply pipe 6 4A is communicated to reach the compressed air injection hole 10 and is injected from the injection hole. Further, the compressed air injection hole 10 may be clogged by setting the size of the gap of the air filter members 4 and 4A, which are sponge filters, to be about half or less of the maximum width of the compressed air injection hole 10. It is possible to inhibit the passage of certain foreign substances and capture them.

  For example, when the compressed air injection hole 10 is a round hole and its diameter is 0.5 mm, if the foreign substance has an overall size of 0.5 mm or less, it passes through the injection hole as it is. However, in the case of a foreign object having a protrusion of 0.5 mm or less, the protrusion may pierce the injection hole, possibly causing the injection hole to be blocked.

  Even if one of the compressed air injection holes 10 that are equally arranged on the circumference is closed, the balance of the jet energy that swirls the fiber bundle is lost, and the swirling energy becomes non-uniform. The yarn structure changes or weak yarns are generated. Moreover, when a change in the yarn structure or weak yarn occurs, it may cause yarn breakage in a later process or may cause dyeing spots on the fabric.

  The compressed air supplied to the spinning nozzle 1 is air from which foreign matter has already been removed through an air filter or an oil filter, but the operation of attaching or detaching the air piping member may cause fragments of rubber parts or resin parts. . For this purpose, the air filter members 4 and 4A according to the present embodiment are attached to the inlet portion of the compressed air injection hole of the air reservoir, so that the air supply pipe 6 can be inserted and removed when the air supply pipe 6 is attached or replaced. Even if foreign matter or foreign matter such as dust or corroded pieces inside the pipe is generated, it is possible to reliably prevent the foreign matter from entering the compressed air injection hole 10.

  Of course, minute foreign matter passes through the air filter members 4 and 4A. Since the minute foreign matter is much smaller than the diameter of the compressed air injection hole 10, it passes through the compressed air injection hole 10 as it is and is discharged to the outside.

  Further, it is clear that the porosity of the porous sponge filter is such that a desired amount of compressed air can pass through. Further, if foreign matter such as dust accumulates on or clogs the air filter members 4 and 4A, there is a risk that the passage of compressed air may be hindered. As described above, the compressed air supplied to the spinning nozzle 1 is Since the air has already been removed of foreign matter through an air filter or an oil filter, even if the air filter member 4A has a size that fills the entire air reservoir 5, the foreign matter that inhibits the flow rate of compressed air in a short period of time. Clogging does not occur and it is sufficient to check with regular maintenance.

  In addition, if the air filter member 4 that is small enough to fill a part of the air reservoir 5 is mounted, the entire outer diameter of the filter member can be used as the foreign matter depositing portion, so the foreign matter deposition rate is very high. It will be slow. Therefore, it is possible to increase the periodic maintenance interval, which is more effective. Thus, as a spinning device 1 equipped with any type of air filter member, the phenomenon that the passage of compressed air is hindered does not occur rapidly, and by periodically cleaning or replacing parts, It is possible to maintain a stable spinning state without incurring pressure loss.

  As described above, the spinning device according to the present invention is configured to elastically press the air filter member, which is a sponge filter, by the screwing operation for assembling the spinning nozzle, so as to be in close contact with the inlet portion of the compressed air injection hole. The passage of foreign matter that may clog the compressed air injection hole can be reliably prohibited.

  Further, since the air filter member can be easily attached and detached, a stable spinning state can be maintained over a long period of time by performing regular maintenance.

Sectional drawing of the spinning apparatus which concerns on this invention is shown, (a) is a spinning apparatus provided with the air filter member of 1st embodiment, (b) is a spinning apparatus provided with the air filter member of 2nd embodiment. It is an exploded sectional view of the spinning device concerning the present invention. It is a perspective view which shows the structure of a spinning machine. 1 is an overall cross-sectional view of a spinning machine including a spinning device according to the present invention. It is a front view which shows the whole spinning machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spinning nozzle 2A Inner cylinder 2B Outer cylinder 3 Hollow guide shaft body 4, 4A Air filter member 5 Air reservoir part 10 Compressed air injection hole DR Draft device L Sliver Y Spinning yarn

Claims (5)

A spinning device comprising a spinning nozzle for spinning by injecting compressed air,
The spinning nozzle injects compressed air from a compressed air injection hole via an air reservoir connected to an air supply pipe, and an air filter member is detachably disposed at the compressed air injection hole inlet of the air reservoir. A spinning device characterized by that.   The spinning nozzle is a spinning nozzle that spins a spun yarn by causing a swirling airflow to act on a fiber passage having a circular cross section, and a plurality of spinning nozzles are arranged on the circumference equally in a tangential direction of the fiber passage. The spinning device according to claim 1, further comprising an air filter member that integrally covers the compressed air injection hole.   2. The porous filter according to claim 1, wherein the air filter member is a porous sponge filter that permits the flow of compressed air but does not allow passage of dust of a size clogged in the compressed air injection hole. Or the spinning device of 2.   4. The spinning device according to claim 3, wherein the size of the gap is less than half the maximum width of the compressed air injection hole.   The spinning nozzle is configured to be screwed with an inner cylinder having the compressed air injection hole and an outer cylinder to which the air supply pipe is attached, and when the inner cylinder and the outer cylinder are screwed together, the air injection hole The air reservoir is formed around and the sponge filter is elastically pressed by the inner cylinder and the outer cylinder by a screwing operation when the sponge filter is mounted, and the sponge filter is compressed air injection hole The spinning device according to claim 3 or 4, wherein the spinning device is in close contact with the yarn.

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