TW202415821A - False-twisting machine and fiber waste collection device - Google Patents

Abstract

Problem to be solved: provided is a false-twisting machine and fiber waste collection device configured to separate fiber waste from air appropriately thereby capable of suppressing the discharge of the fiber waste to an exterior thereof. Solution to problem: in a false-twisting machine, a fiber waste collection device 1 configured to collect fiber waste includes: a fiber waste transfer pipe 11 through which the suctioned fiber waste is transferred; a fiber waste collection unit 13 for collecting therein the fiber waste transferred through the fiber waste transfer pipe 11; a cyclone separator 30 configured to separate the fiber waste from air transferred through the fiber waste transfer pipe 11 so as to collect the separated fiber waste in the fiber waste collection unit 13; and an air discharge unit connected to the cyclone separator 30 for discharging the air obtained after having been separated from the fiber waste, wherein the fiber waste transfer pipe 11 includes a plurality of fiber waste transfer pipes, and the cyclone separator 30 includes a plurality of cyclone separators each arranged to each of the plurality of fiber waste transfer pipes 11.

Description

False twist processing machine and fiber scrap recovery device

The present invention relates to a false twist processing machine and a fiber scrap recovery device for recovering fiber scraps.

In a fiber machine such as a spinning machine or a spinning device, fibers are continuously supplied even when the fiber is hung on the fiber machine or when a reel formed by winding the fiber by a reel device equipped on the fiber machine is replaced. Therefore, in the fiber machine, the fiber is sucked and recovered during the hanging of the fiber or during the reel replacement.

For example, Patent Document 1 discloses a suction device for a plurality of continuously moving filaments, which comprises: a suction pipe provided with a plurality of suction ports; a fiber dust collection container connected to the end of the suction pipe; and a negative pressure pump or a suction blower connected to the fiber dust collection container. In the suction device disclosed in Patent Document 1, the suction pipe becomes negatively pressurized by the operation of the negative pressure pump or the suction blower, and the fiber dust sucked into the suction pipe from the plurality of suction ports is sucked into the suction pipe and recovered into the fiber dust collection container. [Prior Technical Document] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 6-40661.

[The problem that the invention wants to solve]

In the suction device disclosed in Patent Document 1, air and fiber scraps can be sucked into the suction pipe for recovery by operating a negative pressure pump or a suction blower connected to a fiber scrap collection container at the downstream end of the suction pipe in the suction direction. According to such a suction device, fiber scraps may be discharged to the outside together with air.

The present invention is completed in view of the above problems, and its purpose is to provide a false twist processing machine and a fiber scrap recovery device that can properly separate fiber scraps from air and inhibit fiber scraps from being discharged to the outside. [Means for solving the problem]

(1) The pseudo-twist processing machine of the present invention is provided with a fiber shavings recovery device for recovering fiber shavings; the fiber shavings recovery device is provided with: a fiber shavings transfer piping, which is provided with a plurality of suction parts for sucking in fiber shavings generated in the pseudo-twist processing machine, wherein the fiber shavings sucked in from the plurality of suction parts are transferred together with air in the fiber shavings transfer piping; a fiber shavings recovery part, which recovers the fiber shavings transferred in the fiber shavings transfer piping; and a cyclone separator, which is provided Between the aforementioned fiber chip transfer pipe and the aforementioned fiber chip recovery section, the aforementioned fiber chips are separated from the air transferred in the pipe of the aforementioned fiber chip transfer pipe, and the separated aforementioned fiber chips are recovered in the aforementioned fiber chip recovery section; and the air discharge section is connected to the aforementioned cyclone separator and discharges the air after the aforementioned fiber chips are separated; the aforementioned fiber chip transfer pipe is provided in plurality; the aforementioned cyclone separator is respectively equipped with one on each of the plurality of aforementioned fiber chip transfer pipes.

The pseudo-twist processing machine described in (1) above is a fiber chip recovery device for recovering fiber chips generated in the pseudo-twist processing machine. The fiber chips sucked in from the suction section are transferred in the fiber chip transfer piping, and recovered in the fiber chip recovery section via a cyclone separator connected to the fiber chip transfer piping. In the cyclone separator, the fiber chips are separated from the air transferred in the fiber chip transfer piping. The separated fiber chips are recovered in the fiber chip recovery section, and the air from which the fiber chips are separated is discharged from the air discharge section. In this way, by providing a cyclone separator between the fiber chip transfer pipe and the fiber chip recovery section, fiber chips and air can be properly separated, and fiber chips can be prevented from being discharged to the outside from the air discharge section. Moreover, a cyclone separator is provided in each of the plurality of fiber chip transfer pipes. That is, the fiber chip transfer pipe is connected to the cyclone separator one-to-one. Therefore, the fiber chip transfer pipe can be connected to the cyclone separator without being restricted by other fiber chip transfer pipes. Therefore, the fiber chip transfer pipe can be connected to the cyclone separator at an appropriate position where fiber chips and air are well separated. In addition, the "appropriate position" corresponds to, for example, a position where the fiber scrap transfer pipe is located below the end portion on the lower side of the air exhaust portion.

(2) The pseudo-twist processing machine of the present invention is provided with a fiber scrap recovery device for recovering fiber scraps, and the fiber scrap recovery device is provided with: a fiber scrap transfer piping, which is provided with a plurality of suction parts for sucking in the fiber scraps generated in the pseudo-twist processing machine, and the fiber scraps sucked in from the plurality of suction parts are transferred together with air in the fiber scrap transfer piping; a fiber scrap recovery part for recovering the fiber scraps transferred in the fiber scrap transfer piping; and a cyclone separator. It is arranged between the aforementioned fiber chip transfer pipe and the aforementioned fiber chip recovery section, separates the aforementioned fiber chips from the air transferred in the pipe of the aforementioned fiber chip transfer pipe, and recovers the separated aforementioned fiber chips into the aforementioned fiber chip recovery section; and the air discharge section is connected to the aforementioned cyclone separator, and discharges the air after the aforementioned fiber chips are separated; the aforementioned fiber chip transfer pipe is equipped with a plurality of them; the aforementioned fiber chip recovery section has a number less than the plurality of aforementioned fiber chip transfer pipes.

The pseudo-twist processing machine described in (2) above is a fiber chip recovery device for recovering fiber chips generated in the pseudo-twist processing machine. Fiber chips sucked from the suction section are transferred in the fiber chip transfer piping, and are recovered in the fiber chip recovery section via a cyclone separator connected to the fiber chip transfer piping. In the cyclone separator, fiber chips are separated from the air transferred in the fiber chip transfer piping. The separated fiber chips are recovered in the fiber chip recovery section, and the air from which the fiber chips are separated is discharged from the air discharge section. Thus, by providing a cyclone separator between the fiber scrap transfer pipe and the fiber scrap recovery unit, fiber scraps and air can be properly separated, and fiber scraps can be suppressed from being discharged to the outside from the air discharge unit. Moreover, the fiber scrap recovery unit has a smaller number than the plurality of fiber scrap transfer pipes, so the overall structure of the fiber scrap recovery device can be compact. In addition, by equipping the cyclone separator, fiber scraps can be formed into a ball shape and discharged, so the volume occupied by fiber scraps inside the fiber scrap recovery unit can be suppressed. By separating fiber scraps from air and discharging the separated air from the air exhaust section, the volume occupied by air can be suppressed compared to a conventional fiber scrap recovery device that cannot separate air by connecting a blower to a fiber scrap transfer pipe. As a result, in the fiber scrap recovery device of the present invention, a large amount of fiber scraps can be stored in the fiber scrap recovery section, and the number of fiber scrap recovery sections can be suppressed compared to conventional fiber scrap recovery devices. In addition, if the number of fiber scrap recovery sections is small, the replacement frequency can be reduced, etc., and the burden on the operator can be reduced.

According to the fiber scrap collecting device described in (2) above, fiber scraps and air can be separated well, and the fiber scraps can be further suppressed from being discharged to the outside through the air discharge portion.

(3) In the pseudo-twist processing machine of (1) or (2) above, the cyclone separator has a fiber chip discharge section, the fiber chip discharge section discharges the fiber chips to the fiber chip recovery section, and the air discharge section is configured so that the flow rate of air discharged from the air discharge section is greater than the flow rate of air discharged from the fiber chip discharge section.

According to the false twist processing machine described in the above (3), fiber scraps and air can be separated well, and the discharge of fiber scraps to the outside from the air discharge portion can be further suppressed.

(4) In the false twist processing machine according to any one of (1) to (3), the air exhaust portion is provided so that the end portion on the lower side of the air exhaust portion is above the fiber scraps transfer pipe.

According to the false twist processing machine described in the above (4), it is possible to prevent fiber chips from being entangled in the air discharge portion and hindering the good separation of fiber chips and air, and it is possible to separate fiber chips and air well.

(5) In any one of the false twist processing machines described in (1) to (4), the air exhaust section is arranged so that the air exhaust section does not enter the interior of the cyclone separator, and the interior of the air exhaust section is connected to the interior of the cyclone separator.

According to the false twist processing machine described in (5) above, the air exhaust section is arranged so as not to enter the interior of the cyclone separator and to communicate with the interior of the cyclone separator. Therefore, fiber chips will not be entangled in the air exhaust section, and the fiber chips and air can be separated well.

The false twist processing machine described in (1) may be composed only of the structure described in (1), or may be arbitrarily combined with the structure described in (1) and any one of the structures described in (3) to (5) within the scope of achieving integration. When the structure described in (1) is combined with any one of the structures described in (3) to (5), all or part of the structure described in (1) may be combined with all or part of the structure described in any one of the structures described in (3) to (5) within the scope of achieving integration. Similarly, the false twist processing machine described in (2) may be composed only of the structure described in (2), or may be arbitrarily combined with all or part of the structure described in (2) and any one of the structures described in (3) to (5) within the scope of integration. When the structure described in (2) is combined with any one of the structures described in (3) to (5), it is also possible to combine all or part of the structure described in (2) with all or part of the structure described in (3) to (5) within the scope of integration.

(6) The fiber scrap recovery device of the present invention comprises: a fiber scrap transfer pipe having a plurality of suction parts for sucking fiber scraps, wherein the fiber scraps sucked from the plurality of suction parts are transferred together with air in the fiber scrap transfer pipe; a fiber scrap recovery part for recovering the fiber scraps transferred in the fiber scrap transfer pipe; and a cyclone separator. The fiber scraps are arranged between the fiber scraps conveying pipe and the fiber scraps collecting part, and the fiber scraps are separated from the air conveyed in the fiber scraps conveying pipe, and the separated fiber scraps are collected in the fiber scraps collecting part; and the air discharge part is connected to the cyclone separator, and discharges the air after the fiber scraps are separated; the fiber scraps are polyester fibers or The cyclone separator comprises: a cylindrical main body connected to the fiber scrap transfer pipe along the inner peripheral wall in the longitudinal direction of the fiber scrap transfer pipe, and the fiber scraps transferred in the fiber scrap transfer pipe are moved downward along the inner peripheral wall by centrifugal force; a fiber scrap transfer part connected to the lower part of the main body; and a fiber scrap discharge portion for discharging fiber scraps separated from the air to the fiber scrap recovery portion; the fiber scrap transfer portion is configured to have an inclined portion, the diameter of the inclined portion decreases from the connection portion with the main body portion toward the fiber scrap discharge portion; the inclined portion is formed into a cone shape with an angle of greater than or equal to 7° and less than or equal to 10° with the vertical direction.

According to the fiber scrap recovery device described in (6) above, the fiber scraps sucked from the suction section are transferred in the fiber scrap transfer piping, and are recovered in the fiber scrap recovery section via the cyclone separator connected to the fiber scrap transfer piping. In the cyclone separator, the fiber scraps are moved along the cylindrical inner wall toward the fiber scrap transfer section below by centrifugal force, and the fiber scraps are separated from the air transferred in the fiber scrap transfer piping. The separated fiber scraps are formed into balls and discharged from the fiber scrap discharge section, and the discharged fiber scraps are recovered in the fiber scrap recovery section, thereby preventing the fiber scraps from being discharged to the outside from the air discharge section. Here, the density of polyester fiber is 1.4g/cm ³ , and the density of polyamide fiber is 1.12g/cm ³ , but it is difficult to separate fiber scraps from air for fibers with relatively low density even among fibers such as polyester fiber and polyamide fiber. Therefore, by providing a cyclone separator between the fiber scrap transfer pipe and the fiber scrap recovery unit, fiber scraps and air can be properly separated even when the density of fiber scraps is relatively low, and it is possible to suppress the fiber scraps from being discharged to the outside from the air discharge unit. In particular, by forming the inclined portion into a tapered shape with an angle between the inclined portion and the vertical direction being greater than or equal to 7° and less than or equal to 10°, fiber scraps and air can be separated with high precision, and the fiber scrap discharge portion can be prevented from being clogged with fiber scraps and fiber scraps can be discharged well from the fiber scrap discharge portion.

(7) In the fiber scrap collecting device of (6) above, the air discharge portion is configured so that a flow rate of air discharged from the air discharge portion is greater than a flow rate of air discharged from the fiber scrap discharge portion.

According to the fiber scrap collecting device described in (7) above, fiber scraps and air can be separated well, and the fiber scraps can be further suppressed from being discharged to the outside through the air discharge portion.

(8) The fiber scrap recovery device of the present invention comprises: a fiber scrap transfer pipe having a plurality of suction parts for sucking fiber scraps, wherein the fiber scraps sucked from the plurality of suction parts are transferred together with air in the fiber scrap transfer pipe; a fiber scrap recovery part for recovering the fiber scraps transferred in the fiber scrap transfer pipe; and a cyclone separator provided between the fiber scrap transfer pipe and the fiber scrap recovery part. , separating the aforementioned fiber chips from the air transferred in the pipe of the aforementioned fiber chip transfer pipe, and discharging the separated aforementioned fiber chips to the aforementioned fiber chip recovery section; and an air discharge section, connected to the aforementioned cyclone separator, and discharging the air after the aforementioned fiber chips are separated; the aforementioned air discharge section is constructed so that the flow rate of the air discharged from the aforementioned air discharge section is greater than the flow rate of the air discharged from the aforementioned cyclone separator to the aforementioned fiber chip recovery section.

According to the fiber scrap recovery device described in (8) above, the fiber scraps sucked from the suction part are transferred in the fiber scrap transfer piping, and are recovered in the fiber scrap recovery part via the cyclone separator connected to the fiber scrap transfer piping. In the cyclone separator, fibers are separated as fiber scraps from the air transferred in the fiber scrap transfer piping. The separated fiber scraps are recovered in the fiber scrap recovery part, and the air from which the fiber scraps are separated is discharged from the air discharge part. In this way, by providing the cyclone separator between the fiber scrap transfer piping and the fiber scrap recovery part, the fiber scraps and the air can be properly separated, and the fiber scraps can be prevented from being discharged to the outside from the air discharge part. In particular, the air discharge part is configured so that the flow rate of air discharged from the air discharge part is greater than the flow rate of air discharged from the cyclone separator to the fiber scrap recovery part. Therefore, fiber scraps and air can be separated well, and fiber scraps can be further suppressed from being discharged to the outside from the air discharge part.

(9) In the fiber dust recovery device of any one of the above (6) to (8), the air discharge section is arranged so that the end of the lower side of the air discharge section is above the fiber dust transfer pipe. According to the fiber dust recovery device described in the above (9), it is possible to prevent fiber dust from being entangled in the air discharge section and hindering the good separation of fiber dust and air, and it is possible to separate fiber dust and air well. (10) In the fiber dust recovery device of any one of the above (6) to (9), the air discharge section is arranged so that the air discharge section does not enter the interior of the cyclone separator, and the interior of the air discharge section is connected to the interior of the cyclone separator. According to the fiber scrap recovery device described in (10), the air discharge portion is arranged so as not to enter the interior of the cyclone separator and to communicate with the interior of the cyclone separator. Therefore, the fiber scraps will not be entangled in the air discharge portion, and the fiber scraps and air can be separated well. The false twist processing machine described in (6) can be composed only of the structure described in (6), or can be arbitrarily combined with the structure described in (6) and any one of the structures described in (7), (9) and (10) within the scope of integration. When the structure described in (6) is combined with the structure described in any one of (7), (9) and (10), all or part of the structure described in (6) may be combined with all or part of the structure described in any one of (7), (9) and (10) within the scope of integration. Similarly, the false twist processing machine described in (8) may be composed only of the structure described in (8), or all or part of the structure described in (8) may be arbitrarily combined with the structure described in (9) or (10) within the scope of integration. When the structure described in the aforementioned (8) is combined with the structure described in the aforementioned (9) or the aforementioned (10), all or part of the structure described in the aforementioned (8) can also be combined with all or part of the structure described in the aforementioned (9) or the aforementioned (10) within the scope that can achieve integration. [Effect of the invention]

According to the present invention, a false twist processing machine and a fiber scrap recovery device that can properly separate fiber scraps from air and suppress fiber scraps from being discharged to the outside can be provided.

Hereinafter, the mode for implementing the present invention will be described with reference to the drawings. In addition, the present invention is widely applicable to various uses as a fiber scrap recovery device installed in a fiber machine such as a false twist processing machine to recover fiber scraps.

Fig. 1 is a schematic diagram of a false twist processing machine 101 as a fiber machine provided with a fiber scrap recovery device 1 (refer to Fig. 2). Fig. 2 is a schematic diagram showing an example of a fiber scrap recovery device 1 in an embodiment of the present invention. The fiber scrap recovery device 1 is provided in a fiber machine such as a false twist processing machine 101 or a spinning device. In this embodiment, the false twist processing machine 101 is used as an example to explain the fiber machine provided with the fiber scrap recovery device 1. In the following explanation, first, the false twist processing machine 101 provided with the fiber scrap recovery device 1 is explained, and then, the fiber scrap recovery device 1 in an embodiment of the present invention is explained. In addition, for the convenience of explanation, the vertical direction, the front-rear direction, and the left-right direction of the false twist processing machine 101 and the fiber scraps collecting device 1 are shown in FIGS. 1 and 2 .

[False Twist Processing Machine] The false twist processing machine 101 is a fiber machine that performs false twisting on thermoplastic synthetic fibers such as polyester and polyamide to give curling to produce a highly stretchable processed yarn. Referring to FIG. 1 , in the false twist processing machine 101 , a main body 102 is arranged to extend in the vertical direction. Furthermore, the false twist processing machine 101 has the following components, etc.: a yarn supply rack 104 is arranged opposite to the main body 102 with a working space 103 interposed therebetween, and holds a plurality of yarn supply drums 105; a false twist device 106 is arranged above the main body 102, and false twists the fiber Y as a yarn supplied from the yarn supply rack 104; and a winding device 107 is provided on the main body 102, and winds up the fiber Y falsely twisted by the false twist device 106. The winding device 107 is provided in four layers along the vertical direction. Furthermore, a plurality of the winding devices 107 are arranged in a row along the front-rear direction in each layer from the first layer to the fourth layer. In addition, the front-to-back direction of the arrangement of the plurality of winding devices 107 in each of the four layers arranged in the vertical direction is along the horizontal direction, which is perpendicular to the direction (left-right direction) in which the yarn supply rack 104 and the main body 102 are arranged.

In the yarn passage from the yarn supply rack 104 to the false twist device 106, a first yarn supply roller 108, a yarn transfer guide 109, a first heating device 110, and a cooling device 111 are sequentially arranged from the upstream side of the yarn travel direction. In addition, in the yarn passage from the false twist device 106 to the winding device 107, a second yarn supply roller 112, an interlacing nozzle 113, a second heating device 114, a third yarn supply roller 115, and an oil supply roller 116 are sequentially arranged from the upstream side of the yarn travel direction.

The first wire supply roller 108 is arranged above the working space 103. The first heating device 110 is arranged above the working space 103 and above the first wire supply roller 108. The cooling device 111 is arranged on the side of the main body 102 than the first heating device 110 above the working space 103. In addition, the first heating device 110 and the cooling device 111 are arranged above the working space 103, away from the main body 102 and extending obliquely upward. The wire transfer guide 109 is disposed between the first wire supply roller 108 and the first heating device 110 in the up-down direction, and is used to allow the fiber Y to pass through the first heating device 110 and the cooling device 111 when the wire thread is hooked on the false twist processing machine 101.

The second yarn supply roller 112 is arranged above the main body 102. The interlacing nozzle 113 is arranged above the main body 102 and below the second yarn supply roller 112. The second heating device 114 is provided in the main body 102, and is arranged inside the winding device 107 when viewed from the working space 103, and extends in the vertical direction from the first layer to the fourth layer of the four-layer winding device 107. By arranging the devices in this way, a yarn channel from the yarn supply rack 104 to the winding device 107 is formed to surround the working space 103.

In the false twist processing machine 101, the fiber Y as the yarn supplied from the yarn supplying yarn frame 104 is conveyed to the aforementioned devices and wound up in the winding device 107, thereby forming a reel 117. First, the first to third yarn supplying rollers (108, 112, 115) are rollers for conveying the fiber Y from the upstream side to the downstream side of the yarn traveling direction, and the yarn conveying speeds are set so that the yarn conveying speed of the second yarn supplying roller 112 is faster than the yarn conveying speed of the first yarn supplying roller 108. Therefore, the fiber Y is stretched between the first yarn supplying roller 108 and the second yarn supplying roller 112. In addition, the yarn feeding speeds are set so that the yarn feeding speed of the third yarn feeding roller 115 is slower than the yarn feeding speed of the second yarn feeding roller 112. Therefore, the fiber Y is slack between the second yarn feeding roller 112 and the third yarn feeding roller 115.

Then, the fiber Y stretched between the first supply roller 108 and the second supply roller 112 is twisted and transported by, for example, a friction disc type twisting machine, i.e., a false twisting device 106. The twist formed by the false twisting device 106 is transmitted to the first supply roller 108, and the fiber Y stretched and twisted is heated by the first heating device 110 and then cooled by the cooling device 111, so that the twist is fixed. The twisted and heat-set fiber Y is untwisted to the second supply roller 112 after passing through the false twisting device 106.

The fiber Y thus stretched and processed for false twisting is properly interlaced in the interweaving nozzle 113, and after being given cohesiveness, is subjected to a relaxation heat treatment in the second heating device 114, and is wound on a paper tube by the winding device 107 via the oil supply roller 116 to form a reel 117. Then, the fully wound reel 117 is removed from the winding device 107 by the operator. Then, the operator installs a new paper tube on the winding device 107 and restarts the winding operation onto the paper tube. In this way, the reel 117 is replaced. The fiber scrap recovery device 1 of this embodiment is set in the false twist processing machine 101 for use. Hereinafter, the fiber scraps recovery device 1 according to the present embodiment will be described.

[Overview of fiber scrap recovery device] Referring to FIG. 2 , the fiber scrap recovery device 1 includes, for example: a plurality of fiber scrap transfer pipes 11 (11a to 11d); a fiber scrap recovery container 13 provided for the plurality of fiber scrap transfer pipes 11 (11a to 11d); and a plurality of cyclone separators 30 provided one each corresponding to each of the plurality of fiber scrap transfer pipes 11 (11a to 11d). The plurality of cyclone separators 30 are disposed between the fiber scrap transfer pipes 11 (11a to 11d) and the fiber scrap recovery container 13. The cyclone separator 30 separates fiber scraps from the air transferred in the fiber scrap transfer pipe 11, and recovers the separated fiber scraps into the fiber scrap recovery container, which will be described in detail later. In addition, the aforementioned "fiber scraps" include fly, fiber scraps formed by the aggregation of relatively short fiber scraps, and relatively long fiber scraps, in addition to relatively short fiber scraps. In addition, the aforementioned "fiber scrap recovery container 13" is equivalent to the "fiber scrap recovery unit" of the present invention.

The fiber scrap recovery device 1 is provided in the aforementioned pseudo-twist processing machine 101. The plurality of fiber scrap transfer pipes 11 of the fiber scrap recovery device 1 are arranged corresponding to each layer of the winding device 107 arranged in the vertical direction in the pseudo-twist processing machine 101, for example, four layers. Therefore, in the fiber scrap recovery device 1 of this embodiment in which the four-layer winding device 107 is arranged, four fiber scrap transfer pipes 11 (11a to 11d) are provided. Each fiber scrap transfer pipe 11 (11a to 11d) is arranged to extend in the front-rear direction. In each of the first to fourth layers of the winding devices 107, the winding devices 107 are arranged in a row in the front-to-back direction, and each fiber scrap transfer pipe 11 (11a to 11d) also extends in the front-to-back direction of the winding devices 107. In each of the four layers of winding devices 107 arranged vertically, each fiber scrap transfer pipe 11 (11a to 11d) sucks the fiber Y from the vicinity of each winding device 107 arranged in the front-to-back direction (see FIG. 1), and transfers the fiber Y together with the air. The four fiber scrap transfer pipes 11 (11a to 11d) are respectively connected to a common fiber scrap recovery container 13. Then, the air containing the fiber Y transferred in each fiber scrap transfer pipe 11 (11a to 11d) is separated into fiber scraps as the fiber Y and clean air from which the fiber scraps are separated in the cyclone separator 30. The fiber scraps separated from the air are recovered by the fiber scrap recovery container 13. The clean air from which the fiber scraps are separated is discharged to the outside from the air discharge portion 50 (see FIG. 4 to be described later).

However, by providing the cyclone separator 30 and discharging the air from which the fiber scraps are separated to the outside through the air discharge portion 50 (see FIG. 4 described later), the amount of the fiber scrap recovery container 13 can be made smaller than the amount of the fiber scrap transfer pipes 11 (11a to 11d), and the fiber scrap recovery device 1 can be made compact as a whole. That is, by providing the cyclone separator, the fiber scraps can be formed into a ball shape and discharged, and therefore, the volume occupied by the fiber scraps in the fiber scrap recovery container 13 can be suppressed. Furthermore, by separating fiber scraps from air and discharging the separated air from the air discharge portion 50, the volume occupied by air can be suppressed compared to a conventional fiber scrap recovery device that cannot separate air by connecting a blower to the fiber scrap transfer pipe 11 (11a to 11d). As a result, in the fiber scrap recovery device 1 of this embodiment, a large amount of fiber scraps can be stored in the fiber scrap recovery container 13, and the number of fiber scrap recovery containers 13 can be suppressed, compared to conventional fiber scrap recovery devices. Furthermore, if the number of fiber scrap recovery containers 13 is small, the replacement frequency can be reduced, etc., thereby reducing the burden on the operator. In the present embodiment, one fiber scrap recovery container 13 is provided for all of the plurality of fiber scrap transfer pipes 11 (11a to 11d), but the present invention is not limited thereto, and the number of fiber scrap recovery containers 13 may be less than the number of fiber scrap transfer pipes 11 (11a to 11d).

In addition, the fiber scrap recovery device 1 is used to store the threads without cutting them when the threads are switched by the take-up device 107 of the false twist processing machine 101, and recover such threads as fiber scraps. That is, as shown in FIG1, the fiber scrap recovery device 1 is used to recover the fiber Y continuously supplied from the yarn supply rack 104 to the vicinity of the take-up device 107 via each device (110, 111, 106, 114) as fiber scraps from the suction part when the fiber Y is hooked on the false twist processing machine 101 or when the reel 117 formed by the take-up device 107 of the false twist processing machine 101 is replaced. Thus, when the reel 117 is replaced in the take-up device 107 of the false curling machine 101, the fiber Y continuously supplied to the vicinity of the take-up device 107 can be recovered, so that the operation of the false curling machine 101 can be continued without cutting the yarn. The details of the structure of the fiber scrap recovery device 1 are described in more detail below.

[Fiber scraps transfer piping] Referring to FIG. 2, the fiber scraps transfer piping 11 (11a to 11d) is configured as a plurality of suction parts 15 for sucking fibers Y (see FIG. 1) and is provided near each winding device 107, and is a piping for transferring fibers Y sucked from the plurality of suction parts 15. In addition, the suction part 15 for sucking fibers Y will be described later. The fiber scraps transfer piping 11 is, for example, provided in a hollow circular tube shape. There are a plurality of fiber scraps transfer piping 11 (11a to 11d), and in this embodiment, four are provided as described above.

As four fiber scrap transfer pipes 11 (11a to 11d), there are provided a first fiber scrap transfer pipe 11a corresponding to the first layer of the bottommost winding device 107, a second fiber scrap transfer pipe 11b corresponding to the second layer of the winding device 107 from the bottom, a third fiber scrap transfer pipe 11c corresponding to the third layer of the winding device 107 from the bottom, and a fourth fiber scrap transfer pipe 11d corresponding to the fourth layer of the topmost winding device 107. Each fiber scrap transfer pipe 11 (11a to 11d) is arranged in the false twist processing machine 101 in a state where its longitudinal direction extends along the front-rear direction. Furthermore, the first to fourth fiber scrap transfer pipes (11a to 11d) are arranged to extend in the front-rear direction at positions corresponding to the respective stages of the winding device 107 from the first stage to the fourth stage. In addition, in the present embodiment, the cyclone separator 30 is provided with: a first cyclone separator 30a, which is provided between the first fiber chip transfer pipe 11a and the fiber chip recovery container 13; a second cyclone separator 30b, which is provided between the second fiber chip transfer pipe 11b and the fiber chip recovery container 13; a third cyclone separator 30c, which is provided between the third fiber chip transfer pipe 11c and the fiber chip recovery container 13; and a fourth cyclone separator 30d, which is provided between the fourth fiber chip transfer pipe 11d and the fiber chip recovery container 13.

One end (the rear end shown in FIG. 2 ) of each fiber scrap transfer pipe 11 ( 11 a to 11 d ) in the longitudinal direction extending in the front-rear direction is closed, and the other end (the front end shown in FIG. 2 ) is connected to the cyclone separator 30 .

[Suction section] Referring to FIG. 2 , the suction section 15 is configured as a mechanism for sucking the fiber Y (refer to FIG. 1 ), and a plurality of suction sections 15 are provided on each fiber scrap transfer pipe 11 (11a to 11d). The plurality of suction sections 15 provided on each fiber scrap transfer pipe 11 is configured to have a suction pipe 16 and an opening and closing mechanism 17 (refer to FIG. 3 described later), and are arranged in the fiber scrap transfer pipe 11 (11a to 11d) along the length direction of the fiber scrap transfer pipe 11. The plurality of suction sections 15 arranged in each fiber scrap transfer pipe 11 (11a to 11d) are respectively provided in each fiber scrap transfer pipe 11 (11a to 11d) at a position corresponding to the winding device 107. More specifically, the plurality of suction parts 15 are respectively arranged in each fiber scrap transfer pipe 11 (11a to 11d) at each layer of the winding device 107 (see FIG. 1) arranged vertically, for example, in four layers in the false twist processing machine 101 (see FIG. 1) at positions corresponding to the winding devices 107 arranged in the front-rear direction.

The suction parts 15 provided in the first to fourth fiber scrap conveying pipes 11 (11a to 11d) are all configured in the same manner. In addition, the suction parts 15 arranged in a plurality in each fiber scrap conveying pipe 11 (11a to 11d) are all configured in the same manner.

The suction pipe 16 is a tubular member for sucking the fiber Y (see FIG. 1 ), and has a smaller diameter than the fiber scrap transfer pipe 11 (11a to 11d), and is arranged to bend and extend in the middle. One end of the suction pipe 16 is connected to the fiber scrap transfer pipe 11 (11a to 11d), and the other end is provided with a suction port (not shown) disposed near the winding device 107 (see FIG. 1 ) and sucking the fiber Y. The fiber Y sucked from the suction port flows into the tube of the fiber scrap transfer pipe 11.

Fig. 3 is a cross-sectional view showing an example of a suction portion 15 provided in the fiber chip transfer piping 11. In addition, Fig. 3 shows a state in which the opening and closing component 19 is pushed upward to open the suction port 16a. Referring to Fig. 3, the suction pipe 16 is connected to the fiber chip transfer piping 11 in a tilted state relative to the fiber chip transfer piping 11 (11a to 11d). The suction pipe 16 is connected to the fiber chip transfer piping 11 (11a to 11d) at an acute angle with the direction from the upstream side (the rear side shown in Fig. 3) of the air flow flowing in the pipe of the fiber chip transfer piping 11 toward the downstream side (the front side shown in Fig. 3). That is, the suction pipe 16 is connected to the fiber chip transfer pipe 11 (11a to 11d) at an acute angle from one end side (the rear side shown in FIG. 3) toward the other end side (the front side shown in FIG. 3) connected to the fiber chip recovery container 13. Therefore, when the fiber Y (refer to FIG. 1) sucked from the suction port (not shown) flows into the fiber chip transfer pipe 11, it flows in the direction from the upstream side to the downstream side of the air flow in the fiber chip transfer pipe 11. The fiber Y flowing into the fiber chip transfer pipe 11 is transferred to the downstream side by the air flow flowing in the fiber chip transfer pipe 11.

A compressed air jet nozzle hole 16d and a guide path 16e are provided in the suction pipe 16. The compressed air jet nozzle hole 16d is provided as a nozzle hole for jetting compressed air into the suction pipe 16 between one end side provided with the outlet opening 16b and the other end side provided with the suction port 16a. The compressed air jet nozzle hole 16d is configured to jet compressed air in the suction pipe 16 toward the outlet opening 16b side, i.e., one end side. In the present embodiment, two compressed air jet nozzle holes 16d are provided. The two compressed air jet nozzle holes 16d extend from the suction port 16a side toward the outlet opening 16b side and extend from the outer peripheral side toward the inner peripheral side of the suction pipe 16, thereby communicating with the suction flow path 16c. According to this configuration, the two compressed air jet nozzle holes 16d are configured to spray compressed air toward the outlet opening 16b side in the suction pipe 16. In addition, the number of compressed air jet nozzle holes 16d is not limited to two.

The guide path 16e of the suction pipe 16 is provided in the suction pipe 16 as a flow path of compressed air extending in a ring shape along the circumferential direction of the suction pipe 16. The guide path 16e is connected to the compressed air jet nozzle hole 16d and is connected to the cylinder chamber 20 described later. The compressed air supplied to the cylinder chamber 20 flows into the guide path 16e, flows from the guide path 16e into the compressed air jet nozzle hole 16d, and is ejected toward the suction flow path 16c.

The cylinder chamber 20 is a cylindrical space formed inside the main body 18 and is configured to be supplied with compressed air. The cylinder chamber 20 is connected to the guide path 16e of the suction pipe 16 via a connecting path 20a provided inside the main body 18. Therefore, the compressed air supplied to the cylinder chamber 20 flows into the guide path 16e and then flows into the compressed air injection nozzle hole 16d. In addition, the compressed air supply pipe 23 is connected and communicated to the cylinder chamber 20, and the compressed air supply pipe 23 supplies the compressed air to be ejected from the compressed air injection nozzle hole 16d of the suction pipe 16. The compressed air supply pipe 23 is connected to a compressed air supply source (not shown) that supplies compressed air. The compressed air supply pipe 23 is provided with an electromagnetic valve 24, and the electromagnetic valve 24 controls the supply of compressed air to the cylinder chamber 20 by switching between a connected state and a disconnected state. When the electromagnetic valve 24 is opened, the compressed air supply pipe 23 becomes connected, and compressed air is supplied from the compressed air supply pipe 23 to the cylinder chamber 20. When the solenoid valve 24 is closed, the compressed air supply pipe 23 is in a cut-off state, and the supply of compressed air from the compressed air supply pipe 23 to the cylinder chamber 20 is cut off.

In the suction part 15, when the electromagnetic valve 24 is closed and the compressed air supply pipe 23 is cut off and the compressed air is not supplied to the cylinder chamber 20, the opening and closing member 19 rotates around the rotation axis 29 by the applied force of the spring member 22 arranged in the spring chamber 25, so that the suction port 16a is closed. In this state, the suction part 15 does not perform the suction action of the fiber Y (refer to Figure 1). On the other hand, when the electromagnetic valve 24 is opened and the compressed air supply pipe 23 is connected and the compressed air is supplied to the cylinder chamber 20, the piston 21 moves upward and pushes the opening and closing member 19 upward, thereby opening the suction port 16a. Furthermore, in a state where compressed air is supplied to the cylinder chamber 20, the compressed air flows into the compressed air ejection nozzle hole 16d, and is ejected from the compressed air ejection nozzle hole 16d to the suction flow path 16c of the suction pipe 16. The compressed air ejected to the suction flow path 16c is ejected toward the outlet opening 16b side. In this way, the compressed air injected from the compressed air injection nozzle hole 16d into the suction pipe 16 generates an air flow in the suction pipe 16 to transport the fiber Y to the fiber scrap transfer pipe 11 side, and further generates an air flow in the fiber scrap transfer pipe 11 to transport the fiber Y to the cyclone separator 30 side (the front side shown in FIG. 3 ). In this way, the fiber Y sucked from the suction port 16a can be transferred in the fiber scrap transfer pipe 11.

In addition, if the fiber Y can be sucked from the suction port (see FIG. 1 ) and the sucked fiber Y can be transferred in the fiber scrap transfer pipe 11 (11a to 11d), the method is not limited to a specific method. For example, compressed air can be sprayed into the suction pipe 16 as described above, or suction can be performed by, for example, a blower to make the inside of the fiber scrap transfer pipe 11 a negative pressure.

In addition, the flow rate of the air in the fiber scrap transfer pipe 11 (11a to 11d) is preferably 1000 m/min or more. Therefore, when the flow rate of the air in the fiber scrap transfer pipe 11 is less than 1000 m/min, for example, a connection portion for supplying compressed air may be provided at one end (e.g., the rear end) of the fiber scrap transfer pipe 11 (11a to 11d) so that the compressed air supplied from the compressed air supply source (not shown) can be supplied from one end side of the fiber scrap transfer pipe 11 (11a to 11d) to the fiber scrap transfer pipe 11 (11a to 11d). Alternatively, a conventional blower may be installed near the cyclone separator 30 to suck the inside of the fiber scrap transfer pipe 11 (11a to 11d) to make up for the shortfall required to satisfy the air flow rate of, for example, 1000 m/min.

[Cyclone separator] Fig. 4 is a perspective view showing an example of a cyclone separator 30 and an air discharge part 50. Fig. 5 is a top view showing an example of a cyclone separator 30 and an air discharge part 50. Fig. 6 is an example of a front view of a cyclone separator 30. Figs. 4 to 6 also show a connection portion with the fiber scrap transfer pipe 11. In addition, in the present embodiment, as described above, the first cyclone separator 30a to the fourth cyclone separator 30d are provided, but the first cyclone separator 30a to the fourth cyclone separator 30d are all of the same structure.

Referring to FIG. 4 , the cyclone separator 30 is configured to include: a cylindrical main body 32; a conical portion 42 disposed below the main body 32; and a fiber dust discharge portion 46 for discharging the fiber dust separated from the air to the fiber dust recovery container 13 (refer to FIG. 2 ). The main body 32 includes: a cylinder 34 constituting a side wall; and an upper portion 36 constituting an upper end surface of the cylinder 34. An opening portion 38 is formed on the upper portion 36, which is concentric with the cylinder 34 and has a smaller diameter than the cylinder 34. In addition, the cyclone separator 30 does not completely separate air and fiber dust, and the fiber dust from which the air is separated also contains air. Therefore, not only fiber scraps are discharged from the fiber scrap discharge portion 46, but unseparated air is discharged together with the fiber scraps.

The upper end of the tapered portion 42 is a circle with the same diameter as the cylindrical portion 34, and the lower end is a circle with a smaller diameter than the upper end. The upper and lower ends of the tapered portion 42 are open, and have an inclined portion 44 that tapers in a straight line from the upper end toward the lower end in a front view. The details of the inclined portion 44 will be described later, but the angle θ of the sharp side sandwiched by the plumb direction and the direction of the inclined portion 44 (hereinafter referred to as "taper angle θ") is preferably in the range of 7° to 10° (including upper and lower limits). The tapered portion 42 is connected to the lower end of the cylindrical portion 34 at the upper end. In addition, there is no member separating the interior of the tapered portion 42 and the main body 32, and the interior of the tapered portion 42 is connected to the interior of the main body 32. In addition, the "tapered portion 42" is equivalent to the "fiber scraps transfer portion" of the present invention.

The fiber scrap discharge portion 46 is cylindrical with both ends open, and the inner diameter of the fiber scrap discharge portion 46 is the same as the inner diameter of the lower end of the conical portion 42. The fiber scrap discharge portion 46 is connected to the lower end of the conical portion 42 at the upper end in a manner concentric with the lower end of the conical portion 42. In addition, the fiber scrap discharge portion 46 is connected to the fiber scrap recovery container 13 (see FIG. 2) at the lower end. There is no component separating the inner parts of the fiber scrap discharge portion 46 and the conical portion 42, and the inner part of the fiber scrap discharge portion 46 is connected to the inner part of the main body 32.

An air discharge portion 50 for discharging the air from which the fiber scraps are separated is provided above the cyclone separator 30. The air discharge portion 50 is a cylindrical pipe having both ends open, and the inner diameter of the air discharge portion 50 is the same as the diameter of the opening portion 38. The air discharge portion 50 is connected to the opening portion 38 at the lower end in a manner concentric with the opening portion 38. More specifically, the air discharge portion 50 is connected to the main body 32 in a manner such that the cylindrical portion of the air discharge portion 50 does not enter the interior of the main body 32 of the cyclone separator 30, and the lower end of the cylindrical portion of the air discharge portion 50 is coplanar with the lower surface of the upper portion 36 of the cyclone separator 30 (more specifically, the main body 32).

6, the air discharge portion 50 is preferably such that the lower end 50a of the cylindrical portion of the air discharge portion 50 is located above the upper end 11U of the fiber scrap transfer pipe 11. This is because, according to the inventors of the present application, when the lower end 50a of the cylindrical portion of the air discharge portion 50 is located below the upper end 11U of the fiber scrap transfer pipe 11, fiber scraps will be entangled in the cylindrical portion of the air discharge portion 50, thereby hindering the good separation of fiber scraps and air. Therefore, by making the lower end 50a of the cylindrical part of the air discharge part 50 at least higher than the upper end 11U of the fiber chip transfer pipe 11, it is possible to prevent fiber chips from being entangled in the cylindrical part of the air discharge part 50, and the fiber chips and air can be separated well. In this embodiment, as shown in the aforementioned FIG. 4, the lower end of the cylindrical part of the air discharge part 50 is coplanar with the lower surface of the upper part 36 (refer to FIG. 4) of the main body 32, so the lower end of the cylindrical part of the air discharge part 50 is higher than the upper end of the fiber chip transfer pipe 11, and the fiber chips and air can be separated well.

However, when a plurality of fiber chip transfer pipes 11 (11a to 11d) are connected to one cyclone separator 30, the connection position of the fiber chip transfer pipe 11 (11a to 11d) and the cyclone separator 30 is limited. For example, the connection position of one fiber chip transfer pipe 11a among the plurality of fiber chip transfer pipes 11 (11a to 11d) and the cyclone separator 30 is limited by the other fiber chip transfer pipes 11b to 11d. Therefore, it may be impossible to connect one fiber chip transfer pipe 11a to the cyclone separator 30 in a manner lower than the lower end of the cylindrical portion of the air discharge portion 50. Therefore, by connecting each of the plurality of fiber chip transfer pipes 11 (11a to 11d) to the cyclone separator 30 one-to-one, the fiber chip transfer pipes 11 (11a to 11d) can be connected to the cyclone separator 30 at an appropriate position where the fiber chips and the air are well separated, that is, at a position where the fiber chip transfer pipes 11 (11a to 11d) are lower than the lower end of the cylindrical portion of the air discharge portion 50.

There is no member separating the interior of the air discharge portion 50 and the cyclone separator 30 (more specifically, the main body 32), so that the interior of the air discharge portion 50 is connected to the interior of the cyclone separator 30. In addition, according to the inventor's opinion, when the inner diameter of the fiber scrap discharge portion 46 (i.e., the inner diameter of the lower end of the tapered portion 42) is larger than the inner diameter of the air discharge portion 50 (i.e., the diameter of the opening 38), the separation of fiber scraps and air becomes insufficient, and there is a possibility that fiber scraps are discharged from the air discharge portion 50. Therefore, the inner diameter of the fiber scrap discharge portion 46 (i.e., the inner diameter of the lower end of the tapered portion 42) is preferably smaller than the inner diameter of the air discharge portion 50 (i.e., the diameter of the opening 38).

In addition, in the present embodiment, the air discharge portion 50 and the fiber scrap discharge portion 46 are both cylindrical, but are not limited thereto and may also be square cylindrical. In this case, the opening area along the horizontal direction of the portion connected to the interior of the main body portion 32 (i.e., the connection portion with the upper portion 36) is preferably larger than the opening area of the fiber scrap discharge portion 46 along the horizontal direction.

As shown in FIG5 , the fiber scrap transfer pipe 11 is connected to the main body 32 at the upper part of the main body 32 in such a manner that the length direction is along the inner peripheral wall 35 of the main body 32 of the cyclone separator 30. That is, the fiber scrap transfer pipe 11 is connected to the main body 32 in such a manner that it becomes a tangent line of the cylindrical portion 34 of the main body 32 of the cyclone separator 30 in a plan view. In other words, the fiber scrap transfer pipe 11 is connected to the main body 32 of the cyclone separator 30 in such a manner that the air containing fibers as fiber scraps transferred in the fiber scrap transfer pipe 11 travels along the inner peripheral wall 35 of the cylindrical portion 34. By connecting the fiber scrap transfer pipe 11 and the cyclone separator 30 in this way, the air containing fiber scraps transferred in the fiber scrap transfer pipe 11 moves in the circumferential direction along the inner peripheral wall 35 of the cylindrical portion 34 as shown in FIG. 4. Therefore, the fiber scraps contained in the air are transferred downward while rotating in the circumferential direction along the inner peripheral wall 35 of the cylindrical portion 34 under the action of centrifugal force, that is, centrifugal separation. The fiber scraps that move downward while rotating along the inner peripheral wall 35 of the cylindrical portion 34 are further transferred toward the fiber scrap discharge portion 46 along the inner wall 45 of the inclined portion 44. The fiber scraps transferred toward the fiber scrap discharge portion 46 are transferred from the fiber scrap discharge portion 46 to the fiber scrap recovery container 13 (refer to FIG. 2). Fiber scraps are separated from the air containing fiber scraps transferred in the fiber scrap transfer pipe 11, and the separated fiber scraps are recovered in the fiber scrap recovery container 13. On the other hand, the air from which the fiber scraps are separated is discharged from the air discharge portion 50 to the outside.

In addition, when each of the plurality of fiber chip transfer pipes 11 (11a to 11d) is connected one-to-one to the cyclone separator 30, in addition to being able to connect the fiber chip transfer pipes 11 (11a to 11d) to the cyclone separator 30 at an appropriate position, it is also possible to ensure that the inner circumferential wall 35 of the cylindrical portion 34 can reliably transport the fiber chips to the tapered portion 42.

[Function and Effect] According to the fiber dust recovery device 1 of this embodiment, the fiber Y sucked from the suction part 15 is transferred in the fiber dust transfer pipe 11, and is recovered as fiber dust in the fiber dust recovery container 13 through the cyclone separator 30 connected to the fiber dust transfer pipe 11. In the cyclone separator 30, the fiber dust is separated from the air transferred in the fiber dust transfer pipe 11. The separated fiber dust is recovered in the fiber dust recovery container 13, and the air from which the fiber dust is separated is discharged from the air discharge part 50. In this way, by installing the cyclone separator 30 between the fiber scrap transfer pipe 11 and the fiber scrap recovery container 13, the fiber scraps and the air are properly separated, and the fiber scraps can be prevented from being discharged to the outside from the air discharge part 50.

In addition, according to the fiber scrap recovery device 1 of this embodiment, the fiber scrap transfer pipe 11 is connected to the main body 32 in such a manner that the length direction of the fiber scrap transfer pipe 11 is along the inner peripheral wall 35 of the cylindrical portion 34. Therefore, the air moves in the circumferential direction along the inner peripheral wall 35 of the cylindrical portion 34, and the fiber scraps transferred in the fiber scrap transfer pipe 11 move downward along the inner peripheral wall 35 of the cylindrical portion 34 and the inner wall 45 of the inclined portion 44 under the action of centrifugal force, i.e., centrifugal separation, and are separated from the air. The fiber scraps separated from the air are recovered in the fiber scrap recovery container 13 through the fiber scrap discharge portion 46. The clean air from which the fiber scraps are separated is discharged from the air discharge portion 50. However, the air discharge portion 50 is connected to the main body 32 in such a manner that the air discharge portion 50 does not enter the interior of the main body 32 and the lower end of the air discharge portion 50 is coplanar with the upper surface portion 36 of the main body 32. Therefore, fiber scraps will not be entangled in the air discharge portion 50, so that the fiber scraps and air can be separated well.

Furthermore, according to the fiber scrap recovery device 1 of this embodiment, the conical portion 42 has an inclined portion 44, and the diameter of the inclined portion 44 decreases from the connection portion with the main body 32 toward the fiber scrap discharge portion 46. The fiber scraps can be separated from the air in the inclined portion 44, so that the fiber scraps can be further suppressed from being discharged to the outside from the air discharge portion 50. In addition, the inclined portion 44 is formed into a conical shape with an angle between 7° and 10° (including upper and lower limits) with respect to the vertical direction, thereby separating the fiber scraps from the air with high precision, preventing the fiber scrap discharge portion 46 from being clogged with fiber scraps, and enabling the fiber scraps to be discharged well from the fiber scrap discharge portion 46. In particular, if the density of fiber scraps is relatively large, it is relatively easy to separate fiber scraps from air. However, as described above, the false twist processing machine 101 applies false twist to thermoplastic synthetic fibers such as polyester and polyamide to apply curling. The density of polyester fiber is 1.4 g/cm ³ , and the density of polyamide fiber is 1.12 g/cm ³ , which are relatively small even among fibers. Therefore, it is difficult to separate polyester and polyamide from air. In this regard, the fiber scrap recovery device 1 described in this embodiment can properly separate fiber scraps from air even when the density of fiber scraps is small, such as polyester and polyamide. Then, the separated fiber scraps are discharged from the fiber scrap discharge portion 46, and the discharged fiber scraps are recovered in the fiber scrap recovery device 1, thereby being able to suppress the fiber scraps from being discharged to the outside from the air discharge portion.

In addition, according to the fiber scrap recovery device 1 of this embodiment, the inner diameter of the fiber scrap discharge portion 46 (i.e., the inner diameter of the lower end portion of the conical portion 42) is smaller than the inner diameter of the air discharge portion 50 (i.e., the diameter of the opening portion 38). Therefore, the fiber scraps and the air can be separated appropriately, and the fiber scraps can be more effectively suppressed from being discharged to the outside from the air discharge portion 50.

[Experimental Examples] This embodiment is supported by the following experimental examples. The results of the experimental examples are described. FIG. 7 is an example of a front view of the cyclone separator 30. FIG. 8 is an example of an experimental result showing the relationship between the taper angle θ and the flow rate of air in the air discharge section 50 and the flow rate of air in the fiber dust discharge section 46. The fiber used in the experimental examples 1, 2, and 3 described later is a 75-denier false twisted yarn.

In addition, in FIG. 7 and FIG. 8 , the up and down directions are set as the Y direction, and in particular, the up direction is set as the Y direction (positive direction), and the down direction is set as the Y direction (negative direction). The flow rate shown in FIG. 8 represents the flow rate of the vector component in the Y direction, and when the flow rate value is positive, it means that the air flow is in the Y direction (positive direction), and when the flow rate value is negative, it means that the air flow is in the Y direction (negative direction).

7, the dimensions of each part of the cyclone separator 30 are the Y-direction length a of the entire cyclone separator 30, the Y-direction length b of the main body 32, the inner diameter c of the main body 32, the Y-direction length d of the air discharge portion 50, the inner diameter e of the air discharge portion 50, the Y-direction length f of the inclined portion 44, the Y-direction length g of the fiber chip discharge portion 46, the inner diameter h of the fiber chip discharge portion 46, and the taper angle θ. In Experimental Example 2 described later, the inner diameter of the inlet of the fiber chip transfer pipe 11, which is the connection portion with the cyclone separator 30, is set to i.

[Experimental Example 1] In Experimental Example 1, the dimensions of each part of the cyclone separator 30 were set to a=280mm, b=80mm, c (inner diameter)=80mm, d=50mm, e (inner diameter)=48mm, g=10mm, h (inner diameter)=31mm, and the taper angle θ was changed to verify the goodness of the fiber shavings discharged from the fiber shavings discharge portion 46 (hereinafter referred to as "the goodness of fiber shavings discharge"). The taper angle θ was verified at 10°, 15°, 30°, and 40°. In addition, the Y-direction length f of the inclined portion 44 is a dimension determined by the taper angle θ.

The verification results obtained in Experimental Example 1 are shown in Table 1. Table 1 is an example of the experimental results showing the relationship between the taper angle θ and the goodness of fiber chip discharge. In order to discharge fiber chips well from the fiber chip discharge section 46, it is important to gather the fiber chips into a ball shape. The situation where the fiber chips are formed into a ball shape and are well discharged from the fiber chip discharge section 46 is judged as OK, the situation where the fiber chips are not formed into a ball shape and are not discharged from the fiber chip discharge section 46 is judged as NG, and the situation where the fiber chips are gathered into a ball shape and block the fiber chip discharge section 46 at a frequency of 1 time in 5 times is judged as △.

[Table 1] Cone angle θ 10° 15° 30° 45° Good fiber removal △ NG NG NG

As shown in Table 1, if the taper angle θ exceeds 10°, the goodness of the fiber scrap discharge is judged as NG. When the taper angle θ is 10°, according to Experimental Example 1, fiber scraps clog the fiber scrap discharge portion 46 once out of 5 times, so it is judged as △, and fiber scraps gather into balls and are discharged from the fiber scrap discharge portion 46 four out of five times, so it is considered that it is close to being judged as OK. Although not shown in Table 1, when the taper angle θ is less than 10°, the goodness of the fiber scrap discharge is all judged as OK.

From the above verification results, it can be seen that from the viewpoint of the good quality of the fiber scraps discharged from the fiber scrap discharge portion 46, the taper angle θ is preferably 10° or less.

[Experimental Example 2] In Experimental Example 2, the dimensions of each part of the cyclone separator 30 were set to a=300.1mm, b=90mm, c=90mm, d=30mm, e=48mm, f=170.1mm, g=10mm, and i=21mm. Only the taper angle θ was changed, and the changes in the air flow rate in the Y direction in the air discharge section 50 and the air flow rate in the Y direction in the fiber shavings discharge section 46 were verified. The taper angle θ was verified at 10°, 9°, 7°, and 5°. In addition, the inner diameter h of the fiber shavings discharge section 46 was a dimension determined by the taper angle θ. In addition, the flow rate of the air inside the fiber scrap transfer pipe 11 is assumed to be 1000 m/min, and the mass flow rate of the air at the inlet of the fiber scrap transfer pipe 11 is set to 0.014896 kg/s.

According to the verification results obtained in Experimental Example 2, it can be seen that, under the premise that the inner diameter e of the air discharge portion 50 and the inner diameter h of the fiber scrap discharge portion 46 are constant in size, as shown in FIG8 , if the flow rate of the air discharged from the fiber scrap discharge portion 46 increases, the flow rate of the air discharged from the air discharge portion 50 decreases. In addition, the flow rate of the air discharged from the air discharge portion 50 decreases as the taper angle θ decreases. On the other hand, the flow rate of the air discharged from the fiber scrap discharge portion 46 branches at a taper angle θ of 7°, and does not decrease but remains stable even if the taper angle θ further decreases. However, if the inner diameter e of the air discharge portion 50 and the inner diameter h of the fiber chip discharge portion 46 are set to be constant and the taper angle θ is reduced, the Y-direction length f of the inclined portion 44 will increase accordingly. It is judged that if the Y-direction length f of the inclined portion 44 increases, the Y-direction length a of the entire cyclone separator 30 increases, and the pressure loss increases. Therefore, it is judged that if the taper angle is less than 7°, the ratio of the flow rate of air discharged from the fiber chip discharge portion 46 to the flow rate of air discharged from the air discharge portion 50 increases. According to the inventor's opinion, if the flow rate of air discharged from the fiber chip discharge portion 46 is greater than the flow rate of air discharged from the air discharge portion 50, fiber chips and air cannot be separated well. Therefore, the lower limit of the taper angle θ is preferably 7° or more.

Based on the verification results of Experimental Examples 1 and 2, it can be seen that the taper angle θ is preferably in the range of 7° to 10° (including the upper limit and the lower limit).

[Experimental Example 3] In Experimental Example 3, the relationship between the inner diameter h of the fiber shavings discharge section 46 and the ratio of the flow rate of air discharged from the fiber shavings discharge section 46 to the flow rate of air discharged from the air discharge section 50 was verified. In addition, as the function of the air discharge section 50, it is sufficient to discharge the air after separating the fiber shavings into the external air, so the inner diameter e of the air discharge section 50 is constant at, for example, 48 mm. Although the results of the experiment are omitted in the figure, the flow rate (absolute value) of the air in the Y direction (negative direction) of the fiber shavings discharge section 46 increases as the inner diameter h of the fiber shavings discharge section 46 increases, and decreases as the inner diameter h of the fiber shavings discharge section 46 decreases. On the other hand, the flow rate (absolute value) of the air in the Y direction (positive direction) in the air discharge portion 50 tends to decrease as the inner diameter h of the fiber scrap discharge portion 46 increases, and tends to increase as the inner diameter h of the fiber scrap discharge portion 46 decreases. As described above, according to the inventors' knowledge, the inner diameter h of the fiber scrap discharge portion 46 is preferably smaller than the inner diameter e of the air discharge portion 50. However, it is known that when the inner diameter h of the fiber scrap discharge portion 46 is 27 mm or less, it is difficult to discharge fiber scraps from the fiber scrap discharge portion 46. In addition, when the inner diameter h of the fiber scrap discharge portion 46 is 27 mm, the ratio of the flow rate of air discharged from the air discharge portion 50 to the flow rate of air discharged from the fiber scrap discharge portion 46 is approximately 7 to 3. This ratio decreases as the inner diameter h of the fiber scrap discharge portion 46 increases. For example, when the inner diameter h of the fiber scrap discharge portion 46 is in the range of 27 mm to 35 mm, as the inner diameter h of the fiber scrap discharge portion 46 increases, the ratio of the flow rate of air discharged from the air discharge portion 50 to the flow rate of air discharged from the fiber scrap discharge portion 46 decreases. Furthermore, it can be seen that if the inner diameter h of the fiber scrap discharge portion 46 is 35 mm, the ratio of the flow rate of air discharged from the air discharge portion 50 to the flow rate of air discharged from the fiber scrap discharge portion 46 is approximately one to one. As described above, if the ratio of the flow rate of air discharged from the fiber waste discharge portion 46 to the flow rate of air discharged from the air discharge portion 50 becomes larger, fiber waste and air cannot be separated well. Therefore, the inner diameter h of the fiber waste discharge portion 46 is preferably less than 35 mm.

In addition, the above-mentioned Experimental Examples 1, 2, and 3 are the results of using 75 denier pseudo-twisted yarn as described above, and the inventors have also conducted the same verification on other fibers. As a result, for pseudo-twisted yarn, polyester fiber, and polyamide fiber, by forming the inclined portion 44 into a conical shape with an angle between the inclined portion 44 and the vertical direction in the range of 7° to 10° (including upper and lower limits), fiber scraps can be separated from air with high precision, and the fiber scraps discharge portion 46 can be prevented from being blocked by fiber scraps and fiber scraps can be discharged well from the fiber scraps discharge portion 46. In particular, for pseudo-twisted yarns of 75 to 450 deniers, PET of 150 deniers, and nylon, significant effects have been confirmed.

[Variations] The above describes the implementation of the present invention, but the present invention is not limited to the above implementation, and various modifications can be made within the scope of the patent application. For example, the present invention can also be implemented by making modifications as follows.

In the above-mentioned embodiment, the cyclone separator 30 corresponding to each fiber scrap transfer pipe 11 (11a to 11d) is provided between each of the plurality of fiber scrap transfer pipes 11 (11a to 11d) and a fiber scrap recovery container 13 as an example for explanation, but this may not be the case. For example, the first to third modified examples described later may be used.

[First variant] FIG. 9 is a schematic diagram showing a fiber scrap recovery device 1A of the first variant. Referring to FIG. 9 , in the first variant, the fiber scrap recovery device 1A has a plurality of fiber scrap recovery containers 13 (13a to 13d) and a plurality of cyclone separators 30 (30a to 30d) corresponding to a plurality of fiber scrap transfer pipes 11 (11a to 11d) respectively.

Specifically, the fiber scrap recovery container 13 includes: a first fiber scrap recovery container 13a corresponding to the first fiber scrap transfer pipe 11a; a second fiber scrap recovery container 13b corresponding to the second fiber scrap transfer pipe 11b; a third fiber scrap recovery container 13c corresponding to the third fiber scrap transfer pipe 11c; and a fourth fiber scrap recovery container 13d corresponding to the fourth fiber scrap transfer pipe 11d. Furthermore, the cyclone separators 30 (30a to 30d) are provided with: a first cyclone separator 30a, which is provided between the first fiber chip transfer pipe 11a and the first fiber chip recovery container 13a; a second cyclone separator 30b, which is provided between the second fiber chip transfer pipe 11b and the second fiber chip recovery container 13b; a third cyclone separator 30c, which is provided between the third fiber chip transfer pipe 11c and the third fiber chip recovery container 13c; and a fourth cyclone separator 30d, which is provided between the fourth fiber chip transfer pipe 11d and the fourth fiber chip recovery container 13d. The first to fourth fiber scrap transfer pipes 11a to 11d are connected to the main body (without reference symbol) of the cyclone separator 30 in a manner that the length direction is along the inner peripheral wall (without reference symbol) of the main body (without reference symbol). That is, similar to the fiber scrap transfer pipes 11 (11a to 11d) described with reference to FIG. 5, the first to fourth fiber scrap transfer pipes 11a to 11d are connected to the main body in a manner that they become tangents to the cylindrical portion of the main body of the cyclone separator 30 (30a to 30d) in a plan view.

In the mode shown in the first modified example, fibers can be properly separated from the air, fiber scraps can be discharged well from the fiber scrap discharge portion 46 (see FIG. 4 ), and the air from which the fiber scraps are separated can be discharged well from the air discharge portion 50 (see FIG. 4 ).

[Second variant] FIG. 10 is a schematic diagram of a fiber scrap recovery device 1B according to a second variant. Referring to FIG. 10 , in the second variant, the fiber scrap recovery device 1B includes: a plurality of fiber scrap transfer pipes 11 (11a to 11d); a fiber scrap recovery container 13; and a cyclone separator 30.

The cyclone separator 30 is disposed between a plurality of fiber scrap transfer pipes 11 (11a to 11d) and a fiber scrap recovery container 13. The plurality of fiber scrap transfer pipes 11 (11a to 11d) are joined at the upstream side of the cyclone separator 30, and are connected to the main body (without reference symbol) in such a manner that the length direction of the joined pipes is along the inner peripheral wall (without reference symbol) of the main body (without reference symbol) of the cyclone separator 30. That is, similar to the fiber scrap transfer pipes 11 described with reference to FIG. 5, the joined pipes (without reference symbol) are preferably connected to the main body in such a manner that they become tangents to the cylindrical portion of the main body of the cyclone separator 30 in a top view.

In the mode shown in such a second modification, fibers can be appropriately separated from the air, fiber scraps can be discharged well from the fiber scrap discharge portion 46 (see FIG. 4 ), and the air from which the fiber scraps are separated can be discharged well from the air discharge portion 50 (see FIG. 4 ).

In addition, in the second variant, all of the plurality of fiber chip transfer pipes 11 (11a to 11d) merge at the upstream side of one cyclone separator 30. Alternatively, a plurality of cyclones 30 may be provided, and two or more of the plurality of fiber chip transfer pipes 11 (11a to 11d) merge at the upstream side of the cyclone separator 30. For example, two fiber chip transfer pipes may merge at the upstream side of one cyclone separator and be connected to one cyclone separator in the merged state, and the other two fiber chip transfer pipes may merge at the upstream side of another cyclone separator and be connected to another cyclone separator in the merged state.

[Third variant] FIG. 11 is a top view of the cyclone separator 30 of the third variant. In FIG. 11 , the air exhaust portion 50 is also shown for convenience. The fiber dust recovery device of the third variant (without reference symbol) is the same as the fiber dust recovery device 1B of the second variant, and includes: a plurality of fiber dust transfer pipes 11 (11a to 11d); a fiber dust recovery container (without reference symbol); and a cyclone separator 30. In addition, in the second variant, the plurality of fiber dust transfer pipes 11 (11a to 11d) are merged on the upstream side of the cyclone separator 30, but in the third variant, instead, the plurality of fiber dust transfer pipes 11 (11a to 11d) are connected to a cyclone separator 30C.

In detail, referring to Fig. 11, in the third modification, the first fiber scrap transfer pipe 11a, the second fiber scrap transfer pipe 11b, the third fiber scrap transfer pipe 11c, and the fourth fiber scrap transfer pipe 11d are connected to the main body 32 of one cyclone separator 30 at positions staggered in the circumferential direction. The first fiber scrap transfer pipe 11a to the fourth fiber scrap transfer pipe 11d are connected to the main body 32 in a manner that the length direction is along the inner peripheral wall 35 of the main body 32 of the cyclone separator 30. That is, similar to the fiber scrap transfer pipe 11 described with reference to FIG5 , the first fiber scrap transfer pipe 11a to the fourth fiber scrap transfer pipe 11d are connected to the main body 32 in a manner that becomes a tangent to the cylindrical portion 34 of the main body 32 of the cyclone separator 30 in a plan view. In the manner shown in the third modification example, fibers can be separated well from the air, fiber scraps can be discharged well from the fiber scrap discharge portion 46, and air from which fiber scraps have been separated can be discharged well from the air discharge portion 50.

11 are preferably connected to the upper portion of the main body 32. However, the first fiber scraps transfer pipes 11a to the fourth fiber scraps transfer pipes 11d are not necessarily all located at the same position in the vertical direction, and part or all of the first fiber scraps transfer pipes 11a to the fourth fiber scraps transfer pipes 11d may be connected staggered in the vertical direction.

[Fourth modification] FIG. 12 is a perspective view of a cyclone separator 30 of the fourth modification. In addition, FIG. 12 also shows an air exhaust unit 50 for convenience. The fiber scrap recovery device (without reference symbol) of the fourth modification is the same as the fiber scrap recovery device 1B of the second modification, and has a plurality of fiber scrap transfer pipes 11 (11a to 11d), a fiber scrap recovery container (without reference symbol) and a cyclone separator 30.

12 , in the fourth modification, the first fiber scrap transfer pipe 11a, the second fiber scrap transfer pipe 11b, the third fiber scrap transfer pipe 11c, and the fourth fiber scrap transfer pipe 11d are connected to the main body 32 of one cyclone separator 30 at positions staggered in the vertical direction. The first fiber scrap transfer pipe 11a to the fourth fiber scrap transfer pipe 11d are connected to the main body 32 of the cyclone separator 30 in a manner that the length direction is along the inner peripheral wall 35 of the main body 32 of the cyclone separator 30. That is, similar to the fiber scrap transfer pipe 11 described with reference to FIG5 , the first fiber scrap transfer pipe 11a to the fourth fiber scrap transfer pipe 11d are connected to the main body 32 in a manner that becomes a tangent to the cylindrical portion 34 of the main body 32 of the cyclone separator 30 in a plan view. In the manner shown in such a fourth modified example, fibers can be separated well from the air, fiber scraps can be discharged well from the fiber scrap discharge portion 46, and air from which fiber scraps have been separated can be discharged well from the air discharge portion 50.

In addition, although the first fiber scraps conveying pipe 11a to the fourth fiber scraps conveying pipe 11d shown in FIG. 12 are staggered from each other in the vertical direction, they are connected to the main body 32 at the same position in the circumferential direction of the main body 32, but this is not essential. For example, at least one or all of the first fiber scraps conveying pipe 11a to the fourth fiber scraps conveying pipe 11d may be connected to the main body 32 at a position staggered from the circumferential direction of the main body 32.

[Other variations] In the above-mentioned embodiment, the fiber scrap recovery device 1 is provided in the false twist processing machine 101 as an example for explanation, but this is not necessarily the case. It is also possible to implement a method in which the fiber scrap recovery device 1 is provided in a fiber machine other than the false twist processing machine 101. For example, it is also possible to implement a method in which the fiber scrap recovery device 1 is provided in a spinning device.

In the above-mentioned embodiment, the embodiment in which four layers of pseudo-twist processing machines 101 are arranged in the vertical direction on the winding device 107 is described as an example, but this is not necessarily the case. It is also possible to implement an embodiment in which three or fewer layers or five or more layers of pseudo-twist processing machines 101 are arranged in the vertical direction on the winding device 107. In this case, the number of fiber scrap transfer pipes 11 corresponding to the number of layers of the winding device 107 arranged in the vertical direction may also be provided.

In the above-mentioned embodiment, the embodiment in which a plurality of fiber scraps conveying pipes 11 are provided is described as an example, but this is not necessarily the case. A embodiment in which only one fiber scraps conveying pipe 11 is provided may also be implemented.

1: Fiber shavings recovery device 1A: Fiber shavings recovery device 1B: Fiber shavings recovery device 11: Fiber shavings transfer piping 11a: Fiber shavings transfer piping 11b: Fiber shavings transfer piping 11c: Fiber shavings transfer piping 11d: Fiber shavings transfer piping 11U: Upper end portion 13: Fiber shavings recovery container 13a: First fiber shavings recovery container 13b: Second fiber shavings recovery container 13c: Third fiber shavings recovery container 13d: Fourth fiber shavings recovery container 15: Suction portion 16: Suction pipe 16a: Suction port 16b: Outlet opening 16c: Suction flow path 16d: Compressed air jet nozzle hole 16e: Guide path 17: Opening and closing mechanism 18: Main body 19: Opening and closing member 20: Cylinder chamber 20a: Communication path 22: Spring member 23: Compressed air supply pipe 24: Solenoid valve 25: Spring chamber 29: Rotating shaft 30: Cyclone separator 30a: First cyclone separator 30b: Second cyclone separator 30c: Third cyclone separator 30d: Fourth cyclone separator 32: Main body 34: Cylinder 35: Inner peripheral wall 36: Upper surface 38: Opening portion 42: Conical portion 44: Inclined portion 45: Inner wall 46: Fiber scraps discharge section 50: Air discharge section 50a: Lower end 101: False twist processing machine 102: Main body 103: Working space 104: Thread supply rack 105: Thread supply reel 106: False twist device 107: Winding device 108: First thread supply roller 109: Thread transfer guide 110: First heating device 111: Cooling device 112: Second thread supply roller 113: Interweaving nozzle 114: Second heating device 115: Third thread supply roller 116: Oil supply roller 117: Reel a: Y-direction length (of cyclone separator 30) d: Y-direction length (of main body 32) c: Inner diameter (of main body 32) d: Y-direction length (of air discharge section 50) e: Inner diameter (of air discharge section 50) f: Y-direction length (of inclined section 44) g: Y-direction length (of fiber chip discharge section 46) h: Inner diameter (of fiber chip discharge section 46) Y: Fiber θ: Taper angle

[Fig. 1] is a schematic diagram showing an example of a false twist processing machine as a fiber machine equipped with a fiber scrap recovery device. [Fig. 2] is a schematic diagram showing an example of a fiber scrap recovery device of an embodiment of the present invention. [Fig. 3] is a cross-sectional view showing an example of a suction portion provided in a fiber scrap transfer pipe. [Fig. 4] is a perspective view showing an example of a cyclone separator and an air discharge portion. [Fig. 5] is a top view showing an example of a cyclone separator and an air discharge portion. [Fig. 6] is an example of a front view of a cyclone separator. [Fig. 7] is an example of a front view of a cyclone separator. [Fig. 8] is an example of an experimental result showing the relationship between a taper angle and the flow rate of air in the air discharge portion and the flow rate of air in the fiber scrap discharge portion. [Figure 9] is a schematic diagram of a fiber dust recovery device of the first variant. [Figure 10] is a schematic diagram of a fiber dust recovery device of the second variant. [Figure 11] is a top view of a cyclone separator of the third variant. [Figure 12] is a three-dimensional view of a cyclone separator of the fourth variant.

1A: Fiber shavings recovery device

11: Fiber shavings transfer piping

11a: Fiber shavings transfer pipe

11b: Fiber shavings transfer pipe

11c: Fiber shavings transfer pipe

11d: Fiber shavings transfer pipe

13: Fiber shavings recycling container

13a: First fiber scraps recovery container

13b: Second fiber scraps recovery container

13c: Third fiber scraps recovery container

13d: The fourth fiber scraps recycling container

15: Inhalation

16: Suction pipe

30: Cyclone separator

30a: First cyclone separator

30b: Second cyclone separator

30c: Third cyclone separator

30d: The fourth cyclone separator

Claims (10)

A pseudo-twist processing machine is provided with a fiber shavings recovery device for recovering fiber shavings, wherein the fiber shavings recovery device is provided with: A fiber shavings transfer piping is provided with a plurality of suction parts for inhaling fiber shavings generated in the pseudo-twist processing machine, and the fiber shavings inhaled from the plurality of suction parts are transferred together with air in the fiber shavings transfer piping; A fiber shavings recovery part is provided for recovering the fiber shavings before being transferred in the fiber shavings transfer piping; The cyclone separator is disposed between the aforementioned fiber dust conveying pipe and the aforementioned fiber dust recovery unit, and separates the aforementioned fiber dust from the air conveyed in the pipe of the aforementioned fiber dust conveying pipe, and recovers the separated aforementioned fiber dust into the aforementioned fiber dust recovery unit; and The air discharge unit is connected to the aforementioned cyclone separator, and discharges the air after the aforementioned fiber dust is separated; The aforementioned fiber dust conveying pipe is provided in a plurality; The aforementioned cyclone separator is provided in each of the aforementioned plurality of aforementioned fiber dust conveying pipes. A pseudo-twist processing machine is provided with a fiber shavings recovery device for recovering fiber shavings, wherein the fiber shavings recovery device is provided with: A fiber shavings transfer piping is provided with a plurality of suction parts for inhaling fiber shavings generated in the pseudo-twist processing machine, and the fiber shavings inhaled from the plurality of suction parts are transferred together with air in the fiber shavings transfer piping; A fiber shavings recovery part is provided for recovering the fiber shavings in the pipe of the fiber shavings transfer piping; A cyclone separator is provided between the fiber shavings transfer piping and the fiber shavings recovery part, and separates the fiber shavings from the air transferred in the pipe of the fiber shavings transfer piping, and recovers the separated fiber shavings in the fiber shavings recovery part; and The air discharge section is connected to the aforementioned cyclone separator and discharges the air after the aforementioned fiber chips are separated; The aforementioned fiber chip transfer pipes are equipped with a plurality of them; The aforementioned fiber chip recovery section has a number less than the plurality of aforementioned fiber chip transfer pipes. A false twist processing machine as described in claim 1 or 2, wherein the aforementioned cyclone separator has a fiber chip discharge portion, the aforementioned fiber chip discharge portion discharges the aforementioned fiber chips to the aforementioned fiber chip recovery portion, and the aforementioned air discharge portion is configured such that the flow rate of air discharged from the aforementioned air discharge portion is greater than the flow rate of air discharged from the aforementioned fiber chip discharge portion. A false twist processing machine as recited in any one of claims 1 to 3, wherein the air exhaust portion is arranged so that the end portion on the lower side of the air exhaust portion is above the fiber scrap transfer pipe. A false twist processing machine as described in any one of claims 1 to 4, wherein the aforementioned air exhaust portion is arranged so that the aforementioned air exhaust portion does not enter the interior of the aforementioned cyclone separator, and the interior of the aforementioned air exhaust portion is connected to the interior of the aforementioned cyclone separator. A fiber dust recovery device comprises: A fiber dust transfer pipe having a plurality of suction parts for sucking fiber dust, wherein the fiber dust sucked from the plurality of suction parts is transferred together with air in the fiber dust transfer pipe; A fiber dust recovery part recovers the fiber dust transferred in the fiber dust transfer pipe; A cyclone separator is provided between the fiber dust transfer pipe and the fiber dust recovery part, separates the fiber dust from the air transferred in the fiber dust transfer pipe, and recovers the separated fiber dust into the fiber dust recovery part; and The air discharge part is connected to the aforementioned cyclone separator and discharges the air after the aforementioned fiber chips are separated; The aforementioned fiber chips are polyester fibers or polyamide fibers; The aforementioned cyclone separator has: A cylindrical main body part is connected to the aforementioned fiber chip transfer pipe in the manner of the inner peripheral wall along the length direction of the aforementioned fiber chip transfer pipe, and the aforementioned fiber chips transferred in the pipe of the aforementioned fiber chip transfer pipe are moved downward along the aforementioned inner peripheral wall by centrifugal force; The fiber chip transfer part is connected to the lower part of the aforementioned main body part; and The fiber chip discharge part discharges the fiber chips separated from the air to the aforementioned fiber chip recovery part; The fiber scrap transfer section is configured to have an inclined portion, and the diameter of the inclined portion decreases from the connection portion with the main body toward the fiber scrap discharge portion; the inclined portion is formed into a cone shape with an angle of greater than or equal to 7° and less than or equal to 10° with the vertical direction. The fiber scrap recovery device as recited in claim 6, wherein the air exhaust portion is configured such that the flow rate of air exhausted from the air exhaust portion is greater than the flow rate of air exhausted from the fiber scrap exhaust portion. A fiber scrap recovery device comprises: A fiber scrap transfer pipe having a plurality of suction parts for sucking fiber scraps, wherein the fiber scraps sucked from the plurality of suction parts are transferred together with air in the fiber scrap transfer pipe; A fiber scrap recovery part recovers the fiber scraps transferred in the fiber scrap transfer pipe; A cyclone separator is provided between the fiber scrap transfer pipe and the fiber scrap recovery part, and separates the fiber scraps from the air transferred in the fiber scrap transfer pipe, and discharges the separated fiber scraps into the fiber scrap recovery part; and The air discharge part is connected to the aforementioned cyclone separator and discharges the air after the aforementioned fiber scraps are separated; The aforementioned air discharge part is configured so that the flow rate of the air discharged from the aforementioned air discharge part is greater than the flow rate of the air discharged from the aforementioned cyclone separator to the aforementioned fiber scrap recovery part. A fiber scrap recovery device as recited in any one of claims 6 to 8, wherein the air discharge portion is arranged such that the end portion on the lower side of the air discharge portion is above the fiber scrap transfer pipe. A fiber scrap recovery device as described in any one of claims 6 to 9, wherein the air exhaust portion is arranged so that the air exhaust portion does not enter the interior of the cyclone separator, and the interior of the air exhaust portion is connected to the interior of the cyclone separator.