Fiber scrap recycling device

Abstract

This invention provides a fiber scrap recovery device that can suppress noise generation during fiber scrap recovery, thereby improving the working environment. The fiber scrap recovery device includes: a fiber scrap transfer pipe (11) with multiple suction sections (15) for suctioning fiber scrap; a connecting section (12) located at one end of the fiber scrap transfer pipe (11) and connected to a compressed air supply source (100); and a fiber scrap recovery section (13) located at the other end of the fiber scrap transfer pipe (11) and connected to the fiber scrap transfer pipe (11) for recovering fiber scrap. Each suction section (15) has a suction pipe (16) connected at one end to the fiber scrap transfer pipe (11) and a fiber scrap suction port (16a) located at the other end. A compressed air injection nozzle orifice (16d) for injecting compressed air into the suction pipe (16) is provided between one and the other end of the suction pipe (16). Compressed air injection nozzle orifice (16d) injects compressed air into one end of the suction pipe (16).

Description

Technical Field

[0001] This invention relates to a fiber scrap recycling device, which is installed in fiber machinery to collect fiber scrap generated in the fiber machinery. Background Technology

[0002] In fiber machinery such as false twisting machines or spinning devices, fibers are continuously supplied even when fibers are hooked onto the fiber machinery or when changing packages formed by winding fibers using the winding device of the fiber machinery. Therefore, in fiber machinery, fiber scraps have always been attracted and recovered during fiber hooking or package changing.

[0003] For example, Patent Document 1 discloses a suction device for continuously moving multiple filaments, comprising a suction tube with multiple suction ports, a filament collection container connected to the end of the suction tube, and a negative pressure pump or suction blower connected to the filament collection container. In the suction device disclosed in Patent Document 1, the suction tube is made negatively pressurized by the operation of the negative pressure pump or suction blower, and the filaments drawn into the suction tube from the multiple suction ports are attracted and collected in the filament collection container.

[0004] Patent Document 1: Japanese Patent Application Publication No. 6-40661

[0005] In the suction device disclosed in Patent Document 1, fiber debris is attracted and recovered within the suction tube by operating a negative pressure pump or suction blower connected to the downstream end of the suction tube, which has the function of transferring fiber debris, via a fiber debris collection container. Therefore, the negative pressure pump or suction blower generates considerable noise during fiber debris recovery, leading to a deterioration of the working environment. Summary of the Invention

[0006] The present invention was made in view of the above-mentioned problems, and its purpose is to provide a fiber scrap recycling device that can reduce the noise generated during fiber scrap recycling and suppress noise generation, thereby improving the working environment.

[0007] (1) The fiber scrap recycling device of the present invention, installed in a fiber machinery, for recycling fiber scrap generated by the fiber machinery, is characterized by comprising:

[0008] The fiber shavings transfer piping is provided with multiple suction units for sucking in fiber shavings, and the fiber shavings sucked in from the multiple suction units are transferred.

[0009] A connecting portion is provided at one end of the aforementioned fiber scrap transfer pipe along its length and is connected to a compressed air supply source for supplying compressed air; and

[0010] The fiber scrap recovery unit is connected to the fiber scrap transfer pipe at the other end of the fiber scrap transfer pipe along its length direction, and recovers the fiber scrap.

[0011] The aforementioned suction unit has a suction tube, one end of which is connected to the aforementioned fiber debris transfer piping, and the other end of which is provided with a suction port for sucking in the aforementioned fiber debris.

[0012] The aforementioned suction pipe has a compressed air injection nozzle orifice between one end and the other end for injecting compressed air into the suction pipe.

[0013] The compressed air injection nozzle orifice is configured to inject compressed air into the suction pipe toward one end.

[0014] The aforementioned inhalation unit has an opening and closing component for opening and closing the aforementioned inhalation port.

[0015] The aforementioned connection part has an on / off control valve, which controls the supply of compressed air to the aforementioned fiber shavings transfer pipe by switching between an on and off state.

[0016] The fiber scrap recycling device also includes a control unit that controls the opening and closing actions of the aforementioned opening and closing components and the opening and closing actions of the aforementioned opening and closing control valve.

[0017] The aforementioned control unit performs control so that when the aforementioned opening and closing component performs an opening action to open the aforementioned suction port, the aforementioned opening and closing control valve of the aforementioned connection part is opened.

[0018] According to the fiber scrap recovery device described in (1) above, compressed air injected into the suction pipe from the compressed air jet nozzle of the suction unit generates an airflow in the suction pipe that transports fiber scrap to the fiber scrap transfer piping side, thus drawing fiber scrap into the suction port of the suction pipe. The fiber scrap drawn in from the suction port flows into the fiber scrap transfer piping. Then, the fiber scrap flowing into the fiber scrap transfer piping from the suction port is transferred within the fiber scrap transfer piping by compressed air flowing in from the connection at the end of the fiber scrap transfer piping and is recovered to the fiber scrap recovery unit. Therefore, according to the fiber scrap recovery device described above, it is not necessary to install a negative pressure pump or suction blower at the downstream end of the fiber scrap transfer piping to draw in the fiber scrap transfer piping for fiber scrap recovery. Therefore, according to the fiber scrap recovery device described above, the negative pressure pump or suction blower, which is a noise source, can be reduced, thus reducing the sound generated during fiber scrap recovery and suppressing noise generation, thereby improving the working environment.

[0019] Furthermore, according to the fiber scrap recovery device described in (1) above, the suction port can be opened and closed by the opening and closing component. Therefore, when the suction port of the suction unit is closed by the opening and closing component, it is possible to prevent the accidental inhalation of fibers that are not fiber scraps from the suction port.

[0020] Furthermore, according to the fiber scrap recovery device described in (1) above, when the suction port of the suction unit is open, the opening and closing control valve of the connecting part is opened to supply compressed air to the fiber scrap transfer pipe, and the sucked-in fiber scrap is transferred in the fiber scrap transfer pipe and recovered to the fiber scrap recovery unit. Therefore, compressed air can be supplied to the fiber scrap transfer pipe only when the suction action is performed with the suction port open, which can suppress the supply of useless compressed air and supply compressed air efficiently, thereby improving energy efficiency. In addition, as with the suction device disclosed in Patent Document 1, when the suction tube is suctioned by a negative pressure pump or a suction blower, the power consumption varies greatly depending on whether the opening at the end of the suction tube and the suction port are open or closed. When both the end of the suction tube and the suction port are open, the power consumption is minimal, but when either the end of the suction tube or the suction port is closed, the power consumption increases significantly, and when both the end of the suction tube and the suction port are closed, the power consumption increases even more significantly. Therefore, when the suction tube is suctioned by a negative pressure pump or a suction blower as disclosed in Patent Document 1, the following problem exists: when the suction action is not performed, the suction port is closed or the end of the suction tube and the suction port are closed, resulting in a decrease in energy efficiency. However, according to the fiber scrap recovery device described above (1), compressed air can be supplied to the fiber scrap transfer pipe only when the suction action is performed with the suction port open, which can suppress the supply of useless compressed air and supply compressed air efficiently, thereby improving energy efficiency. In addition, "the control unit controls so that when the opening and closing member is opened to open the suction port, the opening and closing control valve of the connection part is opened" includes any of the following cases: the control unit controls so that the opening action of the opening and closing member and the opening action of the opening and closing control valve are performed at the same time; and the control unit controls so that the timing of one of the opening action of the opening and closing member and the opening action of the opening and closing control valve are performed sequentially with the timing of the other.

[0021] (2) In the fiber scrap recycling device of the present invention, it is characterized in that,

[0022] The aforementioned fiber scrap transfer piping is provided in multiple locations.

[0023] Each of the aforementioned fiber scrap transfer pipes is equipped with the aforementioned connecting portion and is connected to the aforementioned fiber scrap recovery unit.

[0024] The aforementioned control unit performs control so that when the aforementioned opening and closing component performs an opening operation to open the aforementioned suction port, the aforementioned opening and closing control valve of the aforementioned connection portion corresponding to the aforementioned fiber scrap transfer pipe is opened, and the aforementioned suction portion having the aforementioned opening and closing component that performs the opening operation is provided on the aforementioned fiber scrap transfer pipe.

[0025] According to the fiber scrap recovery device described in (2) above, when the suction port of the suction section that needs to perform the fiber scrap suction operation is opened, the opening and closing control valve of the connection section corresponding to the fiber scrap transfer pipe of the suction section with the suction port opened is opened, and compressed air is supplied to the fiber scrap transfer pipe. Therefore, even when multiple fiber scrap transfer pipes are provided, compressed air can be supplied only to the fiber scrap transfer pipe corresponding to the suction section that needs to perform the fiber scrap suction operation to recover the fiber scrap. Therefore, it is not necessary to supply compressed air to all fiber scrap transfer pipes at all times, and the generation of energy loss can be suppressed. In addition, in the suction device disclosed in Patent Document 1, when multiple suction tubes are provided, the multiple suction tubes are connected to the fiber scrap collection container. When multiple suction tubes are connected to the fiber scrap collection container, the suction operation is always performed not only in the suction tube corresponding to the suction port that needs to perform the fiber scrap suction operation, but in all suction tubes. Therefore, in the suction device disclosed in Patent Document 1, the energy corresponding to the suction action of all suction tubes is constantly consumed in the negative pressure pump or suction blower connected to the lint collection container. As a result, energy loss is likely to occur. However, according to the lint recovery device described in (2) above, compressed air can be supplied only to the lint transfer pipe corresponding to the suction section that needs to perform the lint suction action to recover the lint, thus suppressing the generation of energy loss.

[0026] (3) In the fiber scrap recycling device of the present invention, it is characterized in that,

[0027] The suction tube has a smaller diameter than the fiber transfer piping.

[0028] According to the fiber scrap recovery device described in (3) above, the diameter of the suction pipe is set to be smaller than the diameter of the fiber scrap transfer piping, so that the backflow of air that would transport fiber scrap to the fiber scrap transfer piping side can be effectively suppressed in the suction pipe. Therefore, fiber scrap can be efficiently sucked in from the suction port of the suction pipe.

[0029] (4) In the fiber scrap recycling device of the present invention, it is characterized in that,

[0030] The aforementioned fiber scrap recovery unit has a fiber scrap recovery container, and compressed air for transferring the fiber scrap flows from the fiber scrap transfer pipe into the fiber scrap recovery container.

[0031] The above-mentioned fiber scrap recycling container has:

[0032] The opening is open to at least one of the top and sides; and

[0033] A screen is configured to cover the opening, allowing compressed air to pass through while restricting the passage of the fiber debris.

[0034] According to the fiber scrap recovery device described in (4) above, when compressed air carrying fiber scrap flows into the fiber scrap recovery container, the compressed air is discharged to the outside from the opening of the fiber scrap recovery container, and the fiber scrap is efficiently recovered in the fiber scrap recovery container. Furthermore, the opening of the fiber scrap recovery container is open on at least one side, either above or to the side, thus allowing a large opening to be formed on the upper surface or side of the fiber scrap recovery container. Therefore, compressed air flowing in from the fiber scrap transfer pipe can be efficiently discharged to the outside, improving the fiber scrap recovery efficiency.

[0035] (5) In the fiber scrap recycling device of the present invention, it is characterized in that,

[0036] The flow rate of the compressed air flowing from the aforementioned connection and into the aforementioned fiber shavings transfer pipe is set to 1000 m / min or higher.

[0037] According to the fiber scrap recovery device described in (5) above, since the compressed air flow rate is set to a high speed of 1000 m / min, it is possible to prevent fiber scraps transferred in the fiber scrap transfer pipe from clogging inside the pipe. Furthermore, the inventors verified this by varying the flow rate of the compressed air flowing in the fiber scrap transfer pipe, and found that when the flow rate is less than 1000 m / min, the probability of fiber scrap clogging in the fiber scrap transfer pipe increases. On the other hand, it was found that when the compressed air flow rate is 1000 m / min or higher, it is possible to prevent fiber scrap clogging in the fiber scrap transfer pipe.

[0038] The fiber scrap recycling device of the present invention does not necessarily have all the components described in (1) to (5) above. For example, in the invention of the fiber scrap recycling device described in (1) above, all the components described in (2) to (5) above are not necessary. Furthermore, within the scope of integration, the fiber scrap recycling device of the present invention can be formed by arbitrarily combining the components described in (1) above with the components described in any one of (2) to (5) above.

[0039] The effects of the invention

[0040] According to the present invention, a fiber scrap recycling device can be provided that can reduce the noise generated during fiber scrap recycling and suppress noise generation, thereby improving the working environment. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of a false twisting processing machine, which is equipped with a fiber scrap recycling device, as a fiber machinery.

[0042] Figure 2 This is a schematic diagram illustrating an example of a fiber scrap recycling device according to one embodiment of the present invention, and is shown together with a compressed air supply source.

[0043] Figure 3 This is a schematic diagram of a fiber scrap recycling device.

[0044] Figure 4 This is a cross-sectional view of the suction section of the fiber scrap transfer piping installed in the fiber scrap recovery device.

[0045] Figure 5 It is a cross-sectional view of the suction section, and it shows the suction section with the suction port closed by the opening and closing components.

[0046] Figure 6 This is an example of a block diagram showing the general structure of the control system for a fiber scrap recycling device.

[0047] Figure 7 This is a flowchart illustrating an example of the inhalation initiation treatment in this embodiment.

[0048] Explanation of symbols

[0049] 1: Fiber scrap recovery device; 11: Fiber scrap transfer piping; 12: Connection part; 13: Fiber scrap recovery part; 15: Suction part; 16: Suction pipe; 16a: Suction port; 16d: Compressed air injection nozzle hole; 100: Compressed air supply source; Y: Fiber. Detailed Implementation

[0050] Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. Furthermore, the present invention can be widely applied to various uses as a fiber scrap recovery device installed in fiber machinery such as false-twist processing machines to recover fiber scrap generated in the machinery.

[0051] Figure 1 This is a schematic diagram of a false twisting processing machine 101, which is a fiber machinery equipped with a fiber scrap recycling device 1. Figure 2This is a schematic diagram illustrating an example of a fiber scrap recovery device 1 according to one embodiment of the present invention, and is shown together with a compressed air supply source 100. The fiber scrap recovery device 1 is installed in fiber machinery such as a false twisting machine 101 or a spinning device. In this embodiment, the false twisting machine 101 will be described as an example of fiber machinery equipped with the fiber scrap recovery device 1. In the following description, the false twisting machine 101 equipped with the fiber scrap recovery device 1 will be described first, followed by a description of a fiber scrap recovery device 1 according to one embodiment of the present invention. Furthermore, for ease of explanation, the vertical, horizontal, and longitudinal directions of the false twisting machine 101 are as follows... Figure 1 As shown.

[0052] [False Twist Processing Machine]

[0053] The false-twist processing machine 101 is, for example, configured to false-twist and crimp thermoplastic synthetic fibers such as polyester and polyamide to produce elastic processed yarns. (See reference...) Figure 1 In the false twisting machine 101, the main body 102 extends vertically. Furthermore, the false twisting machine 101 includes a feed bobbin 104, which is positioned opposite the main body 102 across a working space 103 and holds multiple feed packages 105; a false twisting device 106, positioned above the main body 102, false twists the fibers Y supplied from the feed bobbin 104; and a take-up device 107, located on the main body 102, takes up the fibers Y false twisted by the false twisting device 106. The take-up device 107 has four layers arranged vertically. Furthermore, multiple take-up devices 107 are arranged in the front-back direction in each of the four layers arranged vertically. Additionally, the front-back direction of the multiple take-up devices 107 in each of the four layers arranged vertically is horizontal and perpendicular to the direction (left-right direction) in which the feed bobbin 104 and the main body 102 are arranged.

[0054] On the yarn path from the yarn feeder 104 to the false twisting device 106, a first yarn feeder 108, a yarn guide 109, a first heating device 110, and a cooling device 111 are arranged sequentially from the upstream side of the yarn travel direction. Furthermore, on the yarn path from the false twisting device 106 to the winding device 107, a second yarn feeder 112, an interlacing nozzle 113, a second heating device 114, a third yarn feeder 115, and an oiling roller 116 are arranged sequentially from the upstream side of the yarn travel direction.

[0055] The first feed roller 108 is positioned above the working space 103. The first heating device 110 is positioned above the working space 103, further above the first feed roller 108. The cooling device 111 is positioned above the working space 103, closer to the main body 102 than the first heating device 110. Furthermore, the first heating device 110 and the cooling device 111 are positioned above the working space 103, extending obliquely upwards while moving away from the main body 102. A shifting guide 109 is positioned between the first feed roller 108 and the first heating device 110 in the vertical direction, for guiding the fiber Y through the first heating device 110 and the cooling device 111 when hooking the yarn onto the false twisting machine 101.

[0056] The second feed roller 112 is positioned above the main body 102. The interlacing nozzle 113 is positioned above the main body 102 and below the second feed roller 112. The second heating device 114 is located on the main body 102 and, viewed from the working space 103, is positioned on the back side of the winding device 107, extending vertically from the first layer to the fourth layer of the four-layer winding device 107. With these devices arranged, the yarn channel from the feed bobbin 104 to the winding device 107 forms a space surrounding the working space 103.

[0057] In the false twisting machine 101, fibers Y, fed from the yarn feeder 104, are conveyed to the aforementioned devices and wound by the winding device 107, thereby forming a package 117. First, the first to third yarn feed rollers (108, 112, 115) are rollers for conveying fibers Y from upstream to downstream in the yarn travel direction. The yarn conveying speed is set such that the yarn conveying speed of the second yarn feed roller 112 is faster than that of the first yarn feed roller 108. Therefore, fibers Y are stretched between the first yarn feed roller 108 and the second yarn feed roller 112. Furthermore, the yarn conveying speed is set such that the yarn conveying speed of the third yarn feed roller 115 is faster than that of the second yarn feed roller 112. Therefore, fibers Y are relaxed between the second yarn feed roller 112 and the third yarn feed roller 115.

[0058] Then, the fiber Y stretched between the first feed roller 108 and the second feed roller 112 is twisted and fed, for example, by a friction disc type double twister, i.e., a false twisting device 106. The twist formed by the false twisting device 106 propagates to the first feed roller 108, and the fiber Y, which is stretched and twisted at the same time, is heated by the first heating device 110 and then cooled by the cooling device 111, thus fixing the twist. The twisted and heat-set fiber Y is untwisted after passing through the false twisting device 106 and before reaching the second feed roller 112.

[0059] The fibers Y, thus stretched and false-twisted, are appropriately bundled by forming interlacing portions in the interlacing nozzle 113, and then subjected to relaxation heat treatment by the second heating device 114. They are then wound onto a paper tube via the oiling roller 116 and the winding device 107 to form a package 117. When the package 117 is fully wound, the fibers Y supplied to the winding device 107 are cut. The fully wound package 117 is then unloaded from the winding device 107. The fully wound package 117 moves on the track 118 and is temporarily stored there. When the fully wound package 117 is unloaded from the winding device 107, a new paper tube is installed on the winding device 107, fibers Y are supplied to the winding device 107, and the winding operation to the paper tube restarts. This process of changing packages 117 is repeated. The fiber scrap recovery device 1 of this embodiment is installed in the aforementioned fiber machinery, namely the false twisting machine 101, and is used to recover fiber scrap generated in the false twisting machine 101. For example, the fiber scrap recovery device 1 is used to recover fiber scrap generated as fiber Y when the aforementioned package 117 is changed. When the package 117 is fully wound and fiber Y is cut, fiber scrap generated as fiber Y continuously supplied to the area near the winding device 107 is recovered by the fiber scrap recovery device 1. Then, when a new paper tube is installed on the winding device 107 and the winding operation to the paper tube is restarted, the fiber scrap recovery device 1 stops recovering fiber scrap of fiber Y. Furthermore, fiber scrap of fiber Y includes not only fiber scrap in the form of yarn but also fiber scrap in the form of yarn flyaways. The fiber scrap recovery device 1 of this embodiment will be described below.

[0060] [Overview of the fiber scrap recycling device]

[0061] Figure 3 This is a schematic diagram of a fiber scrap recycling device 1 according to one embodiment of the present invention. (Refer to...) Figures 1-3 The fiber scrap collection device 1 mainly includes, for example, multiple fiber scrap transfer pipes 11, multiple connecting parts 12 respectively provided corresponding to the multiple fiber scrap transfer pipes 11, a fiber scrap collection unit 13, and a control unit 14 (see below). Figure 6 ).

[0062] A fiber scrap collection device 1 is provided in the aforementioned false-twist processing machine 101. A plurality of fiber scrap transfer pipes 11 of the fiber scrap collection device 1 are arranged corresponding to each layer of the four-layer winding device 107 arranged vertically in the false-twist processing machine 101. Therefore, in the fiber scrap collection device 1 of this embodiment, for example, four fiber scrap transfer pipes 11 are provided. Each fiber scrap transfer pipe 11, arranged corresponding to each layer of the four-layer winding device 107, is configured to extend in the front-back direction. In each layer of the winding device 107 from the first to the fourth layer, the winding device 107 is arranged in the front-back direction, and each fiber scrap transfer pipe 11 is also configured to extend in the front-back direction along which the winding device 107 is arranged. Each fiber scrap transfer pipe 11 draws in fiber scrap generated as fiber Y from the area near each of the four-layer winding device 107 arranged in the front-back direction and transfers it within each layer of the four-layer winding device 107. Four fiber scrap transfer pipes 11 are respectively connected to the fiber scrap recovery unit 13. Furthermore, the fiber scraps of fiber Y transferred on each fiber scrap transfer pipe 11 are conveyed to the fiber scrap recovery unit 13 and recovered by the fiber scrap recovery unit 13.

[0063] Furthermore, the fiber scrap recovery device 1 is used to recover fiber scrap generated from the fiber Y continuously supplied from the yarn feed bobbin 104 to the area near the take-up device 107 via various devices (110, 111, 106, 114) to the area near the take-up device 107 when the fiber Y is hooked onto the false twisting machine 101 or when the package 117 formed by the take-up device 107 of the false twisting machine 101 is changed. The details of the configuration of the fiber scrap recovery device 1 will be described in more detail below.

[0064] [Fiber debris transfer piping]

[0065] Reference Figures 1-3 The fiber shavings transfer pipe 11 is provided with a plurality of suction sections 15 for sucking up fiber shavings generated as fiber Y, and is configured such that the fiber shavings sucked up from the plurality of suction sections 15 are transferred. The suction sections 15 for sucking up fiber shavings of fiber Y will be described later. The fiber shavings transfer pipe 11 is, for example, configured as a hollow cylindrical tube. A plurality of fiber shavings transfer pipes 11 are provided; in this embodiment, four are provided corresponding to the four layers of winding devices 107 arranged vertically in the false twisting machine 101.

[0066] Four fiber transfer pipes 11 are provided, including a first fiber transfer pipe 11a corresponding to the lowest layer (first layer) winding device 107, a second fiber transfer pipe 11b corresponding to the second layer (second layer) winding device 107, a third fiber transfer pipe 11c corresponding to the third layer (third layer) winding device 107, and a fourth fiber transfer pipe 11d corresponding to the highest layer (fourth layer) winding device 107. Each fiber transfer pipe 11 is arranged in the false twisting machine 101, extending along the longitudinal direction in its length direction. Furthermore, the first to fourth fiber transfer pipes (11a to 11d) are respectively arranged to extend along the longitudinal direction at positions corresponding to each layer of the winding device 107 from the first to the fourth layer.

[0067] Each fiber shavings transfer pipe 11 has a connecting portion 12 (described later) at one end in the longitudinal direction. Furthermore, each fiber shavings transfer pipe 11 is connected to the fiber shavings collection section 13 (described later) at the other end in the longitudinal direction. Therefore, multiple fiber shavings transfer pipes 11 (11a-11d) are each provided with a connecting portion 12 and connected to the fiber shavings collection section 13. Moreover, the fiber shavings transfer pipe 11 is configured such that compressed air is supplied from the end with the connecting portion 12, and the compressed air flows toward the other end connected to the fiber shavings collection section 13.

[0068] [Inhalation]

[0069] Reference Figures 1 to 3 The suction unit 15 is configured to suck up fiber scraps generated as fiber Y, and multiple suction units 15 are provided on each fiber scrap transfer pipe 11. The multiple suction units 15 provided on each fiber scrap transfer pipe 11 are arranged along its length. The multiple suction units 15 arranged on each fiber scrap transfer pipe 11 are respectively positioned on each fiber scrap transfer pipe 11 at positions corresponding to the winding device 107. More specifically, the multiple suction units 15 are respectively positioned on each fiber scrap transfer pipe 11 at positions corresponding to the winding devices 107 arranged in the front-to-back direction in each of the four layers of winding devices 107 arranged vertically in the false twisting machine 101.

[0070] Multiple suction sections 15 are provided on each fiber scrap transfer pipe 11. A first suction section 15a is provided on the first fiber scrap transfer pipe 11a, a second suction section 15b is provided on the second fiber scrap transfer pipe 11b, a third suction section 15c is provided on the third fiber scrap transfer pipe 11c, and a fourth suction section 15d is provided on the fourth fiber scrap transfer pipe 11d. Specifically, multiple first suction sections 15a are arranged on the first fiber scrap transfer pipe 11a. Multiple second suction sections 15b are arranged on the second fiber scrap transfer pipe 11b. Multiple third suction sections 15c are arranged on the third fiber scrap transfer pipe 11c. Multiple fourth suction sections 15d are arranged on the fourth fiber scrap transfer pipe 11d.

[0071] The configuration of having multiple suction units 15 arranged on each fiber scrap transfer pipe 11 will be described in more detail. Figure 4 This is a cross-sectional view of the suction section 15 located in the fiber scrap transfer pipe 11.

[0072] Figure 5 This is a cross-sectional view of the suction section 15, showing the suction section 15 in the state where the opening / closing member 19 (described later) closes the suction port 16a (described later). Furthermore, the suction sections 15 provided in the first to fourth fiber scrap transfer pipes (11a to 11d) are all constructed in the same manner. That is, the first to fourth suction sections (15a to 15d) provided in the first to fourth fiber scrap transfer pipes (11a to 11d) are all constructed in the same manner. In addition, the multiple suction sections 15 arranged on each fiber scrap transfer pipe 11 are all constructed in the same manner. That is, the multiple first suction sections 15a arranged on the first fiber scrap transfer pipe 11a are all constructed in the same manner. Furthermore, the multiple second suction sections 15b arranged on the second fiber scrap transfer pipe 11b are all constructed in the same manner. Furthermore, the multiple third suction sections 15c arranged on the third fiber scrap transfer pipe 11c are all constructed in the same manner. Furthermore, multiple fourth suction sections 15d arranged on the fourth fiber debris transfer pipe 11d are all similarly constructed. (See reference...) Figure 4 as well as Figure 5 The inhalation section 15 is composed of an inhalation tube 16 and an opening and closing mechanism 17.

[0073] Reference Figure 4 as well as Figure 5The suction pipe 16 is configured as a tubular component for sucking up fiber shavings generated as fiber Y, having a diameter smaller than that of the fiber shavings transfer pipe 11, and extending with a mid-curve. One end of the suction pipe 16 communicates with the fiber shavings transfer pipe 11, and the other end has a suction port 16a for sucking up fiber shavings of fiber Y. The suction port 16a of the suction pipe 16 opens to the outside. Furthermore, the suction port 16a of the suction pipe 16 is located in the area near the winding device 107. One end of the suction pipe 16 is connected to the fiber shavings transfer pipe 11, and an outlet opening 16b is formed at one end of the suction pipe 16. The suction pipe 16 communicates internally with the fiber shavings transfer pipe 11 at the outlet opening 16b. A suction flow path 16c is formed inside the suction pipe 16, leading from the suction port 16a to the outlet opening 16b. Fiber debris of fiber Y drawn in from suction port 16a moves in suction flow path 16c and flows into fiber debris transfer piping 11 from outlet opening 16b.

[0074] Furthermore, the suction pipe 16 is connected at an angle relative to the fiber scrap transfer pipe 11. The suction pipe 16 is connected to the fiber scrap transfer pipe 11 at an acute angle to the direction of the flow of compressed air flowing from upstream to downstream within the fiber scrap transfer pipe 11. That is, the suction pipe 16 is connected to the fiber scrap transfer pipe 11 at an acute angle to the direction of the end side where the connecting portion 12 is provided, towards the end side where it is connected to the fiber scrap recovery portion 13. Therefore, fiber scraps of fiber Y, which are sucked in from the suction port 16a and move in the suction flow path 16c, flow into the fiber scrap transfer pipe 11 from the outlet opening 16b, along the direction of the flow of compressed air from upstream to downstream within the fiber scrap transfer pipe 11. The fiber scraps of fiber Y that flow into the fiber scrap transfer pipe 11 along the direction of the flow of compressed air from upstream to downstream are transferred downstream by the flow of compressed air within the fiber scrap transfer pipe 11.

[0075] Furthermore, a compressed air injection nozzle orifice 16d and a guide path 16e are provided in the suction pipe 16. The compressed air injection nozzle orifice 16d is configured to inject compressed air into the suction pipe 16 between one end side where the outlet opening 16b is provided and the other end side where the suction inlet 16a is provided. The compressed air injection nozzle orifice 16d is configured to inject compressed air into the suction pipe 16 towards the outlet opening 16b side, i.e., one end side, within the suction pipe 16. In this embodiment, two compressed air injection nozzle orifices 16d are provided. Both compressed air injection nozzle orifices 16d extend from the suction inlet 16a side towards the outlet opening 16b side and from the outer peripheral side of the suction pipe 16 towards the inner peripheral side, thereby communicating with the suction flow path 16c. With this configuration, both compressed air injection nozzle orifices 16d are configured to inject compressed air into the suction pipe 16 towards the outlet opening 16b side.

[0076] The guide passage 16e of the intake pipe 16 is configured as a flow path for compressed air extending in a ring shape along the circumference of the intake pipe 16. The guide passage 16e communicates with the compressed air injection nozzle orifice 16d and with the cylinder chamber 20 of the opening and closing mechanism 17 (described later). Compressed air supplied to the cylinder chamber 20 (described later) flows into the guide passage 16e, from the guide passage 16e into the compressed air injection nozzle orifice 16d, and is injected into the intake flow path 16c.

[0077] Reference Figure 4 as well as Figure 5 The opening and closing mechanism 17 of the suction section 15 includes a main body 18, an opening and closing component 19, a cylinder chamber 20, a piston 21, and a spring component 22. The main body 18 is configured as a block-shaped component and is integrally fixed relative to the suction pipe 16. The cylinder chamber 20 is provided in the main body 18, and the main body 18 supports the opening and closing component 19 so that it can rotate freely, and also supports the piston 21 and the spring component 22.

[0078] The opening / closing member 19 is configured to open and close the suction port 16a of the suction tube 16, and is rotatably mounted relative to the main body 18. The opening / closing member 19 is provided with a flat cover 29a and supported portions 29b extending curved relative to the cover 29a on both sides of the cover 29a. Figure 4 As shown, the cover 29a is located at a position separate from the suction port 16a of the suction tube 16, thereby opening the suction port 16a. Furthermore, as... Figure 5 As shown, the cover 29a closes the suction port 16a by being positioned to block it. The supported portion 29b is integrally formed with the cover 29a and is rotatably supported relative to the main body 18 via a rotation axis 29c. The supported portion 29b rotates relative to the main body 18 about the rotation axis 29c, thereby displacing the cover 29a between a position where the suction port 16a is open and a position where the suction port 16a is closed.

[0079] The cylinder chamber 20 is formed as a cylindrical space inside the main body 18 and is configured to be supplied with compressed air. The cylinder chamber 20 is connected to the guide passage 16e of the intake pipe 16 via a connecting passage 20a provided inside the main body 18. Therefore, the compressed air supplied to the cylinder chamber 20 flows into the guide passage 16e and then into the compressed air injection nozzle orifice 16d. Furthermore, a compressed air supply pipe 23 is connected and communicated with the cylinder chamber 20 for supplying compressed air for injection from the compressed air injection nozzle orifice 16d of the intake pipe 16. The compressed air supply pipe 23 is connected to the compressed air supply source 100 (see reference). Figure 1A solenoid valve 24 is installed in the compressed air supply pipe 23. This solenoid valve 24 controls the supply of compressed air to the cylinder chamber 20 by switching between an on and off state. When the solenoid valve 24 is opened, the compressed air supply pipe 23 is in the on state, 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 the off state, and the supply of compressed air from the compressed air supply pipe 23 to the cylinder chamber 20 is cut off. In addition, the solenoid valve 24 is electrically connected to the control unit 14 (described later) and is configured to operate based on commands from the control unit 14.

[0080] The piston 21 is configured to swing the opening / closing member 19, displacing it from a position where the intake port 16a is closed to a position where the intake port 16a is open. The piston 21 is slidably inserted into the cylinder chamber 20. The cylinder chamber 20 opens upwards, and the piston 21 is inserted upwards relative to the cylinder chamber 20. Furthermore, the upper end of the piston 21 protrudes from the cylinder chamber 20, and this protruding upper end is configured to abut against the cover 29a of the opening / closing member 19. When the solenoid valve 24 cuts off the compressed air supply pipe 23 and does not supply compressed air to the cylinder chamber 20, as... Figure 5 As shown, piston 21 moves downward in cylinder chamber 20, and opening / closing component 19 closes intake port 16a. In this state, solenoid valve 24 opens, connecting compressed air supply pipe 23. When compressed air is supplied to cylinder chamber 20, the pressure inside cylinder chamber 20 rises, and piston 21 is displaced upward. When piston 21 displaces upward, as... Figure 4 As shown, the upper end of the piston 21 abuts against the cover 29a of the opening / closing member 19, pushing the cover 29a up and causing the opening / closing member 19 to swing around the rotation axis 29c. As a result, the opening / closing member 19 is displaced from the position of closing the suction port 16a to the position of opening the suction port 16a.

[0081] The spring member 22 is configured to cause the opening / closing member 19 to swing, thereby displacing the opening / closing member 19 from a position where the intake port 16a is open to a position where the intake port 16a is closed. The spring member 22 is disposed in a spring chamber 25 formed in the main body portion 18. The spring chamber 25 opens upwards, and the spring member 22 is disposed within the spring chamber 25 with its upper end protruding outwards and extending upwards. Furthermore, the upper end of the spring member 22 is connected to the cover portion 29a of the opening / closing member 19, and the spring member 22 is configured to apply force upwards to the cover portion 29a. Additionally, the spring chamber 25 and the cylinder chamber 20 are disposed on opposite sides of each other, separated by the rotation axis 29c of the opening / closing member 19. Therefore, the spring member 22 and the piston 21 are disposed on opposite sides of each other, separated by the rotation axis 29c of the opening / closing member 19. Thus, the spring member 22 applies force to cause the opening / closing member 19 to swing in a direction opposite to the direction in which the piston 21 causes the opening / closing member 19 to swing. When the solenoid valve 24 connects the compressed air supply pipe 23 to supply compressed air to the cylinder chamber 20, such as Figure 4 As shown, piston 21 moves upward within cylinder chamber 20, pushing up cover 29a, and opening / closing member 19 opens intake port 16a. In this state, solenoid valve 24 closes, cutting off compressed air supply pipe 23. When the supply of compressed air to cylinder chamber 20 is cut off, the pressure inside cylinder chamber 20 decreases, and piston 21 moves downward. Then, as piston 21 moves downward, as... Figure 5 As shown, the opening and closing component 19 swings due to the force applied by the spring component 22, and the opening and closing component 19 is displaced from the position of opening the suction port 16a to the position of closing the suction port 16a.

[0082] In the intake section 15, with the solenoid valve 24 closed and the compressed air supply pipe 23 cut off, thus preventing the supply of compressed air to the cylinder chamber 20, as follows: Figure 5 As shown, the opening / closing member 19 closes the suction port 16a by applying force through the spring member 22. In this state, the suction section 15 does not perform the suction operation of fiber Y fibers. On the other hand, when the solenoid valve 24 is open and the compressed air supply pipe 23 is connected to supply compressed air to the cylinder chamber 20, as... Figure 4As shown, piston 21 moves upward, pushing opening / closing member 19 upward, which opens intake port 16a. Furthermore, while compressed air is supplied to cylinder chamber 20, compressed air flows into compressed air injection nozzle hole 16d and is injected from compressed air injection nozzle hole 16d into intake flow path 16c of intake pipe 16. The compressed air injected into intake flow path 16c is directed towards outlet opening 16b. Thus, by injecting compressed air from compressed air injection nozzle hole 16d into intake pipe 16, an airflow is generated within intake pipe 16 that transports fiber fragments of fiber Y to fiber fragment transfer piping 11, thereby drawing in fiber fragments of fiber Y from intake port 16a.

[0083] [Connecting Part]

[0084] Reference Figure 2 as well as Figure 3 The connecting part 12 is provided at one end of the fiber scrap transfer pipe 11 along its length and is configured to connect to the compressed air supply source 100 that supplies compressed air. Therefore, the connecting part 12 is configured to supply compressed air supplied from the compressed air supply source 100 from one end of the fiber scrap transfer pipe 11 to the fiber scrap transfer pipe 11. Furthermore, the compressed air supply source 100 is configured to supply compressed air consumed by various devices, including the false-twist processing machine 101, installed in a factory equipped with the false-twist processing machine 101 to these devices. For example, the compressed air supply source 100 is configured to include a compressed air generating mechanism 100a that generates and delivers compressed air, including a compressor and a compressed air storage tank, a main supply system 100b connected to the compressed air generating mechanism 100a, and multiple branch supply systems 100c connected to the main supply system 100b. Compressed air generated by compressed air generating mechanism 100a is delivered to main supply system 100b, and then delivered to multiple branch supply systems 100c connected to main supply system 100b. The compressed air delivered to multiple branch supply systems 100c is supplied to various devices connected to each branch supply system 100c.

[0085] A connecting portion 12 is provided at one end of one of the fiber shavings transfer pipes 11 along its length and is connected to a branch supply system 100c of the compressed air supply source 100. Therefore, the connecting portion 12 is configured to connect the branch supply system 100c to the fiber shavings transfer pipe 11 and supply compressed air from the branch supply system 100c to the fiber shavings transfer pipe 11. The connecting portion 12 is provided at one end of each fiber shavings transfer pipe 11. Therefore, in this embodiment, four connecting portions 12 are provided, and each of the first to fourth fiber shavings transfer pipes (11a to 11d) is provided at one end. The four connecting parts 12 are provided as follows: a first connecting part 12a provided on the end side of one of the first fiber shavings transfer pipes 11, a second connecting part 12b provided on the end side of one of the second fiber shavings transfer pipes 11, a third connecting part 12c provided on the end side of one of the third fiber shavings transfer pipes 11, and a fourth connecting part 12d provided on the end side of one of the fourth fiber shavings transfer pipes 11.

[0086] In addition, refer to Figure 3 The connecting part 12 has a pair of connecting parts (26a, 26b) and an on / off control valve 27. The pair of connecting parts (26a, 26b) are respectively provided at both ends of the connecting part 12. Connecting part 26a is configured to connect to a branch supply system 100c of the compressed air supply source 100. Connecting part 26b is configured to connect to one end of the fiber shavings transfer pipe 11, and in this embodiment, it is configured to connect to one end of the fiber shavings transfer pipe 11.

[0087] The on / off control valve 27 is configured to control the supply of compressed air to the fiber transfer pipe 11 by switching between an on and off state. That is, the on / off control valve 27 is configured to switch the connection state between the branch supply system 100c of the compressed air supply source 100 and the fiber transfer pipe 11 between an on and off state. The on / off control valve 27 is electrically connected to the control unit 14 (described later) and is configured to operate based on commands from the control unit 14. Furthermore, the on / off control valve 27 is provided in the first to fourth connecting portions (12a to 12d) of the first to fourth fiber transfer pipes (11a to 11d). As on / off control valves 27, a first on / off control valve 27a is provided at the first connection 12a, a second on / off control valve 27b is provided at the second connection 12b, a third on / off control valve 27c is provided at the third connection 12c, and a fourth on / off control valve 27d is provided at the fourth connection 12d. The first to fourth on / off control valves (27a to 27d) are opened and closed respectively to switch the connection state between the compressed air supply source 100 and the first to fourth fiber scrap transfer pipes (11a to 11d) between a connected state and a disconnected state. When the first to fourth on / off control valves (27a to 27d) are open, compressed air is supplied to the first to fourth fiber scrap transfer pipes (11a to 11d) respectively. With the first to fourth on / off control valves (27a to 27d) respectively shut off, the supply of compressed air to the first to fourth fiber scrap transfer pipes (11a to 11d) is cut off.

[0088] Furthermore, the opening and closing control valve 27 of the connecting part 12 is configured such that, in the open connection state, the flow rate of compressed air supplied from the compressed air supply source 100 to the fiber scrap transfer pipe 11 is 1000 m / min or more. Therefore, in the fiber scrap recovery device 1, the flow rate of compressed air flowing into the fiber scrap transfer pipe 11 from the connecting part 12 is set to 1000 m / min or more. In the fiber scrap recovery device 1, since the flow rate of compressed air is set to such a high speed as 1000 m / min, it is possible to prevent fiber scraps of fiber Y being transferred in the fiber scrap transfer pipe 11 from clogging inside the fiber scrap transfer pipe 11. In addition, the flow rate of compressed air flowing in the fiber scrap transfer pipe 11 is preferably set to 1000 m / min or more and 10000 m / min or less. When the flow rate of compressed air exceeds 10,000 m / min, the anti-clogging effect of fiber Y in the fiber chip transfer pipe 11 remains unchanged, but it requires an excessive increase in the strength of the fiber chip transfer pipe 11 and the capacity of the compressed air supply source 100. Therefore, the upper limit of the flow rate of compressed air flowing in the fiber chip transfer pipe 11 is preferably set to 10,000 m / min.

[0089] [Fiber Shavings Recycling Department]

[0090] Reference Figure 2 as well as Figure 3 The fiber scrap recovery unit 13 is configured to connect to the fiber scrap transfer pipe 11 at one end along its length direction, and to recover fiber scrap generated as fiber Y. The fiber scrap recovery unit 13 is connected to a plurality of fiber scrap transfer pipes 11. That is, the first to fourth fiber scrap transfer pipes (11a to 11d) are each connected to the fiber scrap recovery unit 13.

[0091] In addition, refer to Figure 3 The fiber scrap collection unit 13 includes a fiber scrap collection container 28, into which compressed air, used to transfer fiber scrap generated as fiber Y, flows from the fiber scrap transfer pipe 11. The fiber scrap collection container 28 is configured as, for example, a cylindrical or rectangular container, with an internal space for collecting fiber scrap of fiber Y. Furthermore, the fiber scrap collection container 28 has an upward-facing opening 28a. In this embodiment, the opening 28a is configured to be an upward-facing opening within the fiber scrap collection container 28, but this is not necessary. The opening 28a can be formed as an opening facing at least upwards and to the side.

[0092] Furthermore, the fiber scrap collection container 28 has a screen 28b configured to cover the opening 28a, allowing compressed air to pass through while restricting the passage of fiber scraps of fiber Y. The screen 28b is, for example, a metal mesh and configured to cover the opening 28a.

[0093] When compressed air carrying fiber scraps of fiber Y flows into the fiber scrap collection container 28 from the fiber scrap transfer pipe 11, the compressed air is discharged to the outside from the opening 28a of the fiber scrap transfer container 28. On the other hand, the fiber scraps of fiber Y that flow into the fiber scrap collection container 28 along with the compressed air are restricted from flowing out of the fiber scrap collection container 28 by the screen 28b. Therefore, only the compressed air flowing into the fiber scrap collection container 28 from the fiber scrap transfer pipe 11 flows to the outside of the fiber scrap collection container 28, and the fiber scraps of fiber Y that flow in along with the compressed air are collected into the fiber scrap collection container 28.

[0094] [Control Department]

[0095] Figure 6 This is an example of a block diagram showing the general configuration of the control system of the fiber scrap recycling device 1. Figure 6The control unit 14 shown is configured to include a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc. The CPU reads a program corresponding to the processing content from the ROM and expands it into the RAM, and cooperates with the expanded program to centrally control the operation of each block of the fiber scrap collection device 1. At this time, various data stored in the storage unit (not shown) are referenced. The storage unit (not shown) is, for example, composed of non-volatile semiconductor memory (so-called flash memory) or hard disk drive.

[0096] Reference Figure 6The control unit 14 is capable of receiving at least a suction start signal and a suction stop signal. For example, when changing the package 117 in the winding device 107 of the false twisting machine 101, a suction start signal and a suction stop signal are generated based on the detection signal of a detection sensor that detects the supply status of fiber Y to the winding device 107 or based on the operation of the operator. For example, when each of the first to fourth suction units (15a to 15d) in the first to fourth fiber scrap transfer pipes (11a to 11d) starts the suction operation of fiber Y scraps by each of the first to fourth suction units (15a to 15d), a suction start signal is generated based on the detection signal from the detection sensor or the operation of the operator. When the suction operation of each of the plurality of suction sections (15a-15d) in the first to fourth fiber scrap transfer pipes (11a-11d) for fiber scrap Y is stopped, a suction stop signal is generated based on a detection signal from a detection sensor or an operator's operation. Furthermore, suction start signals and suction stop signals are generated corresponding to each of the plurality of suction sections (15a-15d) respectively provided in the first to fourth fiber scrap transfer pipes (11a-11d). Therefore, when the suction operation of each of the first to fourth suction sections (15a-15d) in each of the first to fourth fiber scrap transfer pipes (11a-11d) is started, a suction start signal for each of the first to fourth fiber scrap transfer pipes is generated as a suction start signal. Furthermore, for example, upon receiving a first fiber shavings transfer pipe suction start signal corresponding to any of the first suction units 15a in the first fiber shavings transfer pipe 11a, the control unit 14 initiates suction operation on the corresponding first suction unit 15a in the first fiber shavings transfer pipe 11a. In this case, as described later, the control unit 14 activates the first on / off control valve 27a corresponding to the first fiber shavings transfer pipe 11a and the solenoid valve 24 corresponding to the first suction unit 15a in the first fiber shavings transfer pipe 11a that corresponds to the first suction unit 15a in the first fiber shavings transfer pipe 11a, thereby initiating the suction operation. Furthermore, upon receiving the suction start signal from the second to fourth fiber shavings transfer pipes, the control unit 14, in the same manner as upon receiving the suction start signal from the first fiber shavings transfer pipe, activates the second to fourth on / off control valves (27b to 27d) and the solenoid valves 24 corresponding to the second to fourth suction units (15b to 15d) in the second to fourth fiber shavings transfer pipes (11b to 11d) that correspond to the suction start signal from the second to fourth fiber shavings transfer pipe, thereby initiating the suction operation. Moreover, when the suction operation of each of the first to fourth suction units (15a to 15d) in each of the first to fourth fiber shavings transfer pipes (11a to 11d) is stopped, a suction stop signal is generated for each of the first to fourth fiber shavings transfer pipes.

[0097] The control unit 14 is electrically connected to at least the opening and closing control valve 27 provided in the connection part 12 of each fiber scrap transfer pipe 11, and the solenoid valve 24 of the compressed air supply pipe 23 connected to the plurality of suction parts 15 corresponding to each fiber scrap transfer pipe 11.

[0098] As on / off control valves 27 corresponding to each fiber scrap transfer pipe 11, there are a first on / off control valve 27a corresponding to the first fiber scrap transfer pipe 11a, a second on / off control valve 27b corresponding to the second fiber scrap transfer pipe 11b, a third on / off control valve 27c corresponding to the third fiber scrap transfer pipe 11c, and a fourth on / off control valve 27d corresponding to the fourth fiber scrap transfer pipe 11d. That is, the first to fourth on / off control valves (27a to 27d) are respectively provided at the first to fourth connecting parts (12a to 12d) of the first to fourth fiber scrap transfer pipes (11a to 11d). Furthermore, the first to fourth on / off control valves (27a to 27d) are electrically connected to the control unit 14.

[0099] As a solenoid valve 24 connected to the multiple suction sections 15 in each fiber shavings transfer pipe 11, a first solenoid valve 24a corresponding to each first suction section 15a of the first fiber shavings transfer pipe 11a, a second solenoid valve 24b corresponding to each second suction section 15b of the second fiber shavings transfer pipe 11b, a third solenoid valve 24c corresponding to each third suction section 15c of the third fiber shavings transfer pipe 11c, and a fourth solenoid valve 24d corresponding to each fourth suction section 15d of the fourth fiber shavings transfer pipe 11d. That is, the first solenoid valve 24a is provided in each compressed air supply pipe 23 connected to the multiple first suction sections 15a in the first fiber shavings transfer pipe 11a, and corresponds to each first suction section 15a of the first fiber shavings transfer pipe 11a. A second solenoid valve 24b is provided in each compressed air supply pipe 23 that is respectively connected to a plurality of second suction sections 15b in the second fiber scrap transfer pipe 11b, and corresponds to each of the second suction sections 15b in the second fiber scrap transfer pipe 11b. A third solenoid valve 24c is provided in each compressed air supply pipe 23 that is respectively connected to a plurality of third suction sections 15c in the third fiber scrap transfer pipe 11c, and corresponds to each of the third suction sections 15c in the third fiber scrap transfer pipe 11c. A fourth solenoid valve 24d is provided in each compressed air supply pipe 23 that is respectively connected to a plurality of fourth suction sections 15d in the fourth fiber scrap transfer pipe 11d, and corresponds to each of the fourth suction sections 15d in the fourth fiber scrap transfer pipe 11d. Furthermore, the first to fourth solenoid valves (24a to 24d) are electrically connected to the control unit 14. Furthermore, as the opening and closing components 19 of each of the plurality of suction sections 15 in each fiber shavings transfer pipe 11, there are opening and closing components 19 of each first suction section 15a of the first fiber shavings transfer pipe 11a, namely the first opening and closing component 19a; opening and closing components 19 of each second suction section 15b of the second fiber shavings transfer pipe 11b, namely the second opening and closing component 19b; opening and closing components 19 of each third suction section 15c of the third fiber shavings transfer pipe 11c, namely the third opening and closing component 19c; and opening and closing components 19 of each fourth suction section 15d of the fourth fiber shavings transfer pipe 11d, namely the fourth opening and closing component 19d. Therefore, a first solenoid valve 24a is provided corresponding to each first opening and closing component 19a, a second solenoid valve 24b is provided corresponding to each second opening and closing component 19b, a third solenoid valve 24c is provided corresponding to each third opening and closing component 19c, and a fourth solenoid valve 24d is provided corresponding to each fourth opening and closing component 19d.

[0100] When the control unit 14 receives a first fiber shavings transfer pipe suction start signal corresponding to any of the first suction units 15a in the first fiber shavings transfer pipe 11a, it sends an opening command to the first solenoid valve 24a corresponding to the first suction unit 15a of the first fiber shavings transfer pipe suction start signal, causing the first solenoid valve 24a to operate and open. When the first solenoid valve 24a is opened, in the first suction unit 15a corresponding to the first fiber shavings transfer pipe suction start signal, the first opening / closing member 19a opens the suction port 16a by the operation of the piston 21, and compressed air is injected into the suction pipe 16. Thus, fiber shavings of fiber Y are sucked into the first suction unit 15a corresponding to the first fiber shavings transfer pipe suction start signal. The suction operation of each of the second to fourth suction sections (15b to 15d) in the second to fourth fiber scrap transfer pipes (11b to 11d) is performed in the same manner as the suction operation of each of the first suction sections 15 in the first fiber scrap transfer pipe 11a. When the control unit 14 receives a second to fourth fiber scrap transfer pipe suction start signal corresponding to any of the second to fourth suction sections (15b to 15d) in the second to fourth fiber scrap transfer pipes (11a to 11d), it sends an opening command to the second to fourth solenoid valves (24b to 24d) corresponding to the second to fourth suction sections (15b to 15d) corresponding to the second to fourth fiber scrap transfer pipe suction start signal, causing the second to fourth solenoid valves (24b to 24d) to operate and open. When the second to fourth solenoid valves (24b to 24d) are opened, in the second to fourth suction sections (15b to 15d) corresponding to the second to fourth fiber scrap transfer pipe suction start signal, the second to fourth opening and closing components (19b to 19d) open the suction port 16a and inject compressed air into the suction pipe 16. Thus, fiber scraps of fiber Y are sucked into the second to fourth suction sections (15b to 15d) corresponding to the second to fourth fiber scrap transfer pipe suction start signal.

[0101] Furthermore, when the control unit 14 receives a first fiber shavings transfer pipe suction start signal corresponding to any of the first suction units 15a in the first fiber shavings transfer pipe 11a, it sends an opening command to the first solenoid valve 24a corresponding to the first suction unit 15a corresponding to the first fiber shavings transfer pipe suction start signal, and also sends an opening command to the first on / off control valve 27a, causing the first on / off control valve 27a to operate and open. When the first on / off control valve 27a is opened, the first on / off control valve 27a becomes connected, and compressed air is supplied from the compressed air supply source 100 to the first fiber shavings transfer pipe 11a. The fiber shavings of fiber Y sucked in from the first suction unit 15a corresponding to the first fiber shavings transfer pipe suction start signal are transferred in the first fiber shavings transfer pipe 11a by the compressed air. The supply of compressed air to the second to fourth fiber scrap transfer pipes (11b to 11d) and the transfer of fiber scrap of fiber Y therefrom are performed in the same manner as in the case of the first fiber scrap transfer pipe 11a. When the control unit 14 receives a second to fourth fiber scrap transfer pipe suction start signal generated corresponding to any of the second to fourth suction units (15b to 15d) in the second to fourth fiber scrap transfer pipes (11a to 11d), it sends an opening operation command to the second to fourth solenoid valves (24b to 24d) corresponding to the second to fourth suction units (15b to 15d) corresponding to the second to fourth fiber scrap transfer pipe suction start signal, and also sends an opening operation command to the second to fourth on / off control valves (27b to 27d), causing the second to fourth on / off control valves (27b to 27d) to operate and perform the opening operation. When the second to fourth opening and closing control valves (27b to 27d) are opened, the second to fourth opening and closing control valves (27b to 27d) are connected, and compressed air is supplied from the compressed air supply source 100 to the second to fourth fiber scrap transfer pipes (11b to 11d). Fiber scraps of fiber Y sucked in by the second to fourth suction units (15b to 15d) corresponding to the suction start signal are transferred in the second to fourth fiber scrap transfer pipes (11b to 11d) by compressed air.

[0102] Furthermore, when the control unit 14 receives the first to fourth suction stop signals, it sends a closing command to the first to fourth solenoid valves (24a to 24d) corresponding to the first to fourth suction stop signals, causing them to close. It also sends a closing command to the first to fourth on / off control valves (27a to 27d), causing them to close. When the first to fourth solenoid valves (27a to 27d) corresponding to the first to fourth suction stop signals are closed, the first to fourth on / off components (19a to 19d) close the suction port 16a. Thus, the suction of fiber Y fibers in the first to fourth suction units (15a to 15d) corresponding to the first to fourth suction stop signals in the first to fourth fiber chip transfer piping (11a to 11d) is stopped. Furthermore, when the first to fourth on / off control valves (27a to 27d) are closed, the connection between the compressed air supply source 100 and the first to fourth fiber scrap transfer pipes (11a to 11d) is cut off, and the supply of compressed air to the first to fourth fiber scrap transfer pipes (11a to 11d) is stopped.

[0103] As described above, the control unit 14 is configured to control the opening and closing operations of the first to fourth opening and closing components (19a to 19d) by activating the first to fourth solenoid valves (24a to 24d). Furthermore, the control unit 14 is configured to control the opening and closing operations of the first to fourth opening and closing control valves (27a to 27d) provided in the first to fourth fiber scrap transfer pipes (11a to 11d). Furthermore, the control unit 14 is configured to control the opening and closing of the first to fourth opening and closing components (19a to 19d) to open the suction port 16a when the first to fourth opening and closing components (19a to 19d) are opened to open the suction port 16a. This control opens and closes the first to fourth opening and closing control valves (27a to 27d) which correspond to the first to fourth connecting parts (12a to 12d) of the first to fourth suction parts (15a to 15d) which are equipped with the first to fourth opening and closing components (19a to 19d) that are opened to open the suction port 16a.

[0104] [Inhalation initiation treatment]

[0105] Next, referring to the accompanying drawings, the following describes the suction start process performed by the control unit 14 in the fiber scrap recovery device 1 when the suction of fiber scrap of fiber Y is initiated by the first to fourth suction units (15a to 15d) installed in the first to fourth fiber scrap transfer pipes (11a to 11d), and the operation of the first to fourth suction units (15a to 15d) and the first to fourth connecting units (12a to 12d) during the suction start process.

[0106] Figure 7 This is a flowchart illustrating an example of the inhalation initiation process among the various processes performed by the control unit 14 in this embodiment. Additionally, Figure 7 The flowchart shown is for illustrative purposes only. Figure 7 As shown, when the control unit 14 receives the first fiber scrap transfer pipe suction start signal ( Figure 7 If the condition in step S1 is "yes", the process proceeds to step S2. On the other hand, if the first fiber transfer pipe suction start signal is not received (…), the process continues. Figure 7 If the condition in step S1 is determined to be "no", the process is transferred to step S4.

[0107] In step S2, the control unit 14 controls the opening of the first opening / closing member 19a of the first suction section 15a corresponding to the first fiber scrap transfer pipe suction start signal. Specifically, the control unit 14 opens the first solenoid valve 24a corresponding to the first suction section 15a corresponding to the first fiber scrap transfer pipe suction start signal, thereby opening the suction port 16a of the first opening / closing member 19a. Furthermore, by opening the first solenoid valve 24a and the accompanying opening of the first opening / closing member 19a, compressed air is injected into the suction pipe 16 of the first suction section 15a corresponding to the first fiber scrap transfer pipe suction start signal, thus sucking in fiber scraps of fiber Y from the open suction port 16a. The control unit 14 then proceeds to step S3.

[0108] In step S3, the control unit 14 activates the first on / off control valve 27a to establish a connected state. With the first on / off control valve 27a in the connected state, compressed air is supplied from the compressed air supply source 100 to the first fiber scrap transfer pipe 11a, and the fiber scraps of fiber Y drawn in from the first suction unit 15a are transferred through the compressed air in the first fiber scrap transfer pipe 11a. When step S3 is executed, steps S4 to S12 are not executed. Furthermore, in Figure 7 The flowchart shown illustrates a method where step S3 is executed after step S2, but this is not always the case; the execution order of steps S2 and S3 can also be reversed. That is, when the first fiber scrap transfer pipe suction start signal is received, step S3 can be executed first to connect the first on / off control valve 27a, and then step S2 can be executed to open the first on / off component 19a.

[0109] When the control unit 14 receives the signal to start suction of the second fiber scrap transfer pipe, Figure 7 If the condition in step S4 is "yes", the process proceeds to step S5. On the other hand, if the second fiber transfer tubing suction start signal is not received (…), the process continues. Figure 7If the determination in step S4 is "No", the process proceeds to step S7. In step S5, the control unit 14 controls the opening of the second solenoid valve 24b corresponding to the second suction unit 15b corresponding to the second fiber scrap transfer pipe suction start signal, thereby opening the second opening / closing member 19b. As a result, fiber scraps of fiber Y are sucked into the second suction unit 15b corresponding to the second fiber scrap transfer pipe suction start signal. The control unit 14 then executes step S6. In step S6, the control unit 14 activates the second opening / closing control valve 27b to a connected state. With the second opening / closing control valve 27b in a connected state, compressed air is supplied to the second fiber scrap transfer pipe 11b, and fiber scraps of fiber Y sucked from the second suction unit 15b are transferred through the compressed air into the second fiber scrap transfer pipe 11b. When step S6 is executed, steps S7 to S12 are not executed. In addition, Figure 7 The flowchart shown illustrates a method where step S6 is executed after step S5, but this is not always the case; the execution order of steps S5 and S6 can also be reversed. That is, when the suction start signal of the second fiber scrap transfer pipe is received, step S6 can be executed first to connect the second on / off control valve 27b, and then step S5 can be executed to open the second on / off component 19b.

[0110] When the control unit 14 receives the start signal for suction of the third fiber debris transfer piping, Figure 7 If the condition in step S7 is "yes", the process proceeds to step S8. On the other hand, if the third fiber transfer piping suction start signal is not received (…), the process continues to the next step. Figure 7 If the determination in step S7 is "No", the process proceeds to step S10. In step S8, the control unit 14 controls the opening of the third solenoid valve 24c corresponding to the third suction unit 15c corresponding to the third fiber scrap transfer pipe suction start signal, thereby opening the third opening / closing member 19c. As a result, fiber scraps of fiber Y are sucked into the third suction unit 15c corresponding to the third fiber scrap transfer pipe suction start signal. The control unit 14 then executes step S9 following the process in step S8. In step S9, the control unit 14 activates the third opening / closing control valve 27c to a connected state. With the third opening / closing control valve 27c in a connected state, compressed air is supplied to the third fiber scrap transfer pipe 11c, and fiber scraps of fiber Y sucked from the third suction unit 15c are transferred through the compressed air into the third fiber scrap transfer pipe 11c. When step S9 is executed, steps S10 to S12 are not executed. Additionally, in Figure 7The flowchart shown illustrates a method where step S9 is executed after step S8, but this is not always the case; the execution order of steps S8 and S9 can also be reversed. That is, when the suction start signal of the third fiber scrap transfer pipe is received, step S9 can be executed first to connect the third on / off control valve 27c, and then step S8 can be executed to open the third on / off component 19c.

[0111] When the control unit 14 receives the signal to start suction of the fourth fiber scrap transfer pipe, Figure 7 If the condition in step S10 is determined to be "yes", the process proceeds to step S11. On the other hand, if no signal is received indicating the start of suction of the fourth fiber scrap transfer tubing (…), the process continues. Figure 7 If the determination in step S10 is "No", then the processing in steps S11 to S12 is not executed. In step S11, the control unit 14 controls the opening of the fourth solenoid valve 24d corresponding to the fourth suction section 15d corresponding to the fourth fiber scrap transfer pipe suction start signal, thereby opening the fourth opening / closing member 19d. As a result, the suction of fiber scraps of fiber Y is performed in the fourth suction section 15d corresponding to the fourth fiber scrap transfer pipe suction start signal. The control unit 14 then executes the processing in step S12. In step S12, the control unit 14 activates the fourth opening / closing control valve 27d to a connected state. With the fourth opening / closing control valve 27d in a connected state, compressed air is supplied to the fourth fiber scrap transfer pipe 11d, and the fiber scraps of fiber Y sucked in from the fourth suction section 15d are transferred in the fourth fiber scrap transfer pipe 11d by the compressed air. Furthermore, in Figure 7 The flowchart shown illustrates a method where step S12 is executed after step S11, but this is not always the case; the execution order of steps S11 and S12 can also be reversed. That is, when the suction start signal of the fourth fiber scrap transfer pipe is received, step S12 can be executed first to connect the fourth on / off control valve 27d, and then step S11 can be executed to open the fourth on / off component 19d.

[0112] [Effects]

[0113] According to the above embodiment, compressed air injected from the compressed air jet nozzle hole 16d of the suction unit 15 into the suction pipe 16 generates an airflow within the suction pipe 16 that transports fiber shavings of fiber Y towards the fiber shavings transfer pipe 11. Therefore, fiber shavings of fiber Y are drawn in from the suction port 16a of the suction pipe 16. The fiber shavings of fiber Y drawn in from the suction port 16a flow into the fiber shavings transfer pipe 11. Then, the fiber shavings of fiber Y flowing into the fiber shavings transfer pipe 11 from the suction port 16a are transferred within the fiber shavings transfer pipe 11 by compressed air flowing in from the connection portion 12 at the end of the fiber shavings transfer pipe 11 and recovered into the fiber shavings recovery unit 13. Therefore, the fiber shavings recovery device 1 according to this embodiment does not require a negative pressure pump or suction blower to be installed at the downstream end of the fiber shavings transfer pipe 11 to draw in the fiber shavings transfer pipe 11 for the purpose of recovering fiber shavings of fiber Y. Therefore, the fiber scrap recycling device 1 according to this embodiment can reduce the negative pressure pump or intake blower that become noise sources, thereby reducing the sound generated in the recycling of fiber scraps of fiber Y and suppressing noise generation, thus improving the working environment.

[0114] Furthermore, according to the above embodiment, the suction port 16a can be opened and closed by the opening and closing member 19. Therefore, when the suction port 16a of the suction section 15 is closed by the opening and closing member 19, it is possible to prevent the accidental inhalation of fibers Y that are not fiber scraps from the suction port 16a.

[0115] Furthermore, according to this embodiment described above, when the suction port 16a of the suction unit 15 is opened, the opening / closing control valve 27 of the connecting part 12 is opened to supply compressed air to the fiber scrap transfer pipe 11. The fiber scraps of the suctioned fiber Y are transferred in the fiber scrap transfer pipe 11 and recycled to the fiber scrap collection unit 13. Therefore, compressed air can be supplied to the fiber scrap transfer pipe 11 only when the suction operation is performed with the suction port 16a open, which can suppress the supply of useless compressed air and supply compressed air efficiently, thereby improving energy efficiency.

[0116] Furthermore, according to this embodiment described above, when the suction port 16a of the suction section 15, which is required to perform the suction operation of fiber Y, is opened, the opening / closing control valve 27 of the connection section 12 corresponding to the fiber shavings transfer pipe 11 of the suction section 15 with the open suction port 16a is opened, and compressed air is supplied to the fiber shavings transfer pipe 11. Therefore, even when multiple fiber shavings transfer pipes 11 are provided, as in this embodiment, compressed air can be supplied only to the fiber shavings transfer pipe 11 corresponding to the suction section 15, which is required to perform the suction operation of fiber Y, to recover fiber Y fibers. Therefore, it is not necessary to always supply compressed air to all fiber shavings transfer pipes 11, and energy loss can be suppressed.

[0117] Furthermore, according to the above embodiment, the diameter of the suction pipe 16 is set to be smaller than the diameter of the fiber scrap transfer pipe 11, thus effectively suppressing the backflow of air that would otherwise transport fiber scraps of fiber Y to the fiber scrap transfer pipe 11 within the suction pipe 16. Therefore, fiber scraps of fiber Y can be efficiently sucked in from the suction port 16a of the suction pipe 16.

[0118] Furthermore, according to this embodiment described above, when compressed air carrying fiber scraps of fiber Y flows into the fiber scrap collection container 28, the compressed air is discharged to the outside from the opening 28a of the fiber scrap collection container 28, and the fiber scraps of fiber Y are efficiently collected into the fiber scrap collection container 28. Moreover, since the opening 28a of the fiber scrap collection container 28 opens upwards, a larger opening 28a can be formed on the upper surface of the fiber scrap collection container 28. Therefore, the compressed air flowing in from the fiber scrap transfer pipe 11 can be efficiently discharged to the outside, improving the recycling efficiency of fiber scraps of fiber Y.

[0119] Furthermore, according to the above embodiment, the flow rate of compressed air is set to a high speed of 1000 m / min, thus preventing the fiber debris of fiber Y being transferred in the fiber debris transfer pipe 11 from clogging inside the fiber debris transfer pipe 11.

[0120] Furthermore, the inventors verified the results by varying the flow rate of the compressed air flowing within the fiber scrap transfer pipe 11. The results showed that when the flow rate was less than 1000 m / min, the probability of fiber scrap of fiber Y causing blockage in the fiber scrap transfer pipe 11 increased. On the other hand, it was found that when the flow rate of the compressed air was 1000 m / min or higher, blockage of fiber scrap of fiber Y in the fiber scrap transfer pipe 11 could be prevented. Table 1 below shows the results of verifying the blockage of fiber scrap of fiber Y in the fiber scrap transfer pipe 11 by varying the flow rate of the compressed air flowing within the fiber scrap transfer pipe 11. Nine levels of compressed air flow rate were set from 742 m / min to 1692 m / min for verification. In the verification, multiple experiments were conducted at each flow rate level, continuously transferring fiber scrap of fiber Y for a sufficient period of time as assumed in actual fiber scrap recycling operations, and the blockage of fiber scrap of fiber Y was evaluated. The clogging status of fiber debris in fiber Y at various flow rate levels is shown in the verification results column of Table 1. Based on the probability of clogging, it was evaluated using three levels: 0, △, and ×. A 0% probability of clogging in fiber Y was classified as 0. A △ probability of clogging in fiber Y was classified as 1% or more but less than 40%. A × probability of clogging in fiber Y was classified as 40% or more.

[0121] Table 1

[0122] Verification results 〇 〇 〇 〇 〇 〇 〇 △ ×

[0123] As can be clearly seen from Table 1, the following was verified: when the flow rate of compressed air is less than 1000 m / min, the probability of blockage of fiber Y in fiber chip transfer pipe 11 increases; when the flow rate of compressed air is 1000 m / min or more, blockage of fiber Y in fiber chip transfer pipe 11 can be prevented.

[0124] [Variation Example]

[0125] The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be made as long as they fall within the scope of the patent claims. For example, modifications can be made as follows.

[0126] (1) In the above embodiment, the fiber scrap collection device 1 is described as being installed in the false twisting machine 101, but this is not always the case. The fiber scrap collection device 1 may also be installed in a fiber machine other than the false twisting machine 101. For example, the fiber scrap collection device 1 may also be installed in a spinning device.

[0127] (2) In the above embodiment, an example was described where a false twisting processing machine 101 with four layers arranged in the vertical direction was provided on the winding device 107, but this is not always the case. It is also possible to implement a false twisting processing machine 101 with three or fewer layers or five or more layers arranged in the vertical direction on the winding device 107. In this case, a 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.

[0128] (3) In the above embodiment, an example of providing multiple fiber scrap transfer pipes 11 was given, but this is not the case. It is also possible to implement a method in which only one fiber scrap transfer pipe 11 is provided.

[0129] (4) In the above embodiment, the example described is that multiple fiber scrap transfer pipes 11 are connected to one fiber scrap collection unit 13, but this is not the case. It is also possible to implement a method in which multiple fiber scrap collection units 13 are provided corresponding to the multiple fiber scrap transfer pipes 11, and each fiber scrap transfer pipe 11 is connected to each fiber scrap collection unit 13.

[0130] (5) In the above embodiment, the example described is that the opening action is performed by the solenoid valve 24, thereby performing the action of opening the intake port 16a by the piston 21 and supplying compressed air to the compressed air injection nozzle orifice 16d to inject compressed air into the intake pipe 16 at the same timing. However, this is not always the case. It is also possible to implement the action of opening the intake port 16a by the piston 21 and supplying compressed air to the compressed air injection nozzle orifice 16d to inject compressed air into the intake pipe 16 by controlling them separately and performing them at different timings. For example, the compressed air supply pipe 23 and solenoid valve 24 used to start the action of opening the intake port 16a by the piston 21, and the compressed air supply pipe 23 and solenoid valve 24 used to start the action of supplying compressed air to the compressed air injection nozzle orifice 16d to inject compressed air into the intake pipe 16, can be configured differently, and the operation of these different configurations is independently controlled by the control unit 14.

Claims

1. A fiber scrap recycling device, installed in fiber machinery, for recycling fiber scrap generated in the fiber machinery, characterized in that, have: The fiber shavings transfer piping is provided with multiple suction units for sucking in the aforementioned fiber shavings, and the fiber shavings sucked in from the multiple suction units are transferred. A connecting portion is provided at one end of the aforementioned fiber scrap transfer pipe along its length and is connected to a compressed air supply source for supplying compressed air; and The fiber scrap recovery unit is connected to the fiber scrap transfer pipe at the other end of the fiber scrap transfer pipe along its length direction, and recovers the fiber scrap. The aforementioned suction unit has a suction tube, one end of which is connected to the aforementioned fiber debris transfer piping, and the other end of which is provided with a suction port for sucking in the aforementioned fiber debris. The aforementioned suction pipe has a compressed air injection nozzle orifice between one end and the other end for injecting compressed air into the suction pipe. The compressed air injection nozzle orifice is configured to inject compressed air into the suction pipe toward one end. The aforementioned inhalation unit has an opening and closing component for opening and closing the aforementioned inhalation port. The aforementioned connection part has an on / off control valve, which controls the supply of compressed air to the aforementioned fiber shavings transfer pipe by switching between an on and off state. The fiber scrap recycling device also includes a control unit that controls the opening and closing actions of the aforementioned opening and closing components and the opening and closing actions of the aforementioned opening and closing control valve. The aforementioned control unit performs control so that when the aforementioned opening and closing component performs an opening action to open the aforementioned suction port, the aforementioned opening and closing control valve of the aforementioned connection part is opened.

2. The fiber scrap recycling device according to claim 1, characterized in that, The aforementioned fiber scrap transfer piping is provided in multiple locations. Each of the aforementioned fiber scrap transfer pipes is equipped with the aforementioned connecting portion and is connected to the aforementioned fiber scrap recovery unit. The aforementioned control unit performs control so that when the aforementioned opening and closing component performs an opening operation to open the aforementioned suction port, the aforementioned opening and closing control valve of the aforementioned connection portion corresponding to the aforementioned fiber scrap transfer pipe is opened, and the aforementioned suction portion having the aforementioned opening and closing component that performs the opening operation is provided on the aforementioned fiber scrap transfer pipe.

3. The fiber scrap recycling device according to claim 1 or 2, characterized in that, The suction tube has a smaller diameter than the fiber transfer piping.

4. The fiber scrap recycling device according to any one of claims 1 to 3, characterized in that, The aforementioned fiber scrap recovery unit has a fiber scrap recovery container, and compressed air for transferring the fiber scrap flows from the fiber scrap transfer pipe into the fiber scrap recovery container. The above-mentioned fiber scrap recycling container has: The opening is open to at least one of the top and sides; and A screen is configured to cover the opening, allowing compressed air to pass through while restricting the passage of the fiber debris.

5. The fiber scrap recycling device according to any one of claims 1 to 4, characterized in that, The flow rate of the compressed air flowing from the aforementioned connection and into the aforementioned fiber shavings transfer pipe is set to 1000 m / min or higher.

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