Yarn processing machine

Abstract

To prevent mixing of a yarn poor in quality with a winding package for a product.SOLUTION: A machine base control device 5 of a false-twist texturing machine 1 generates a residual quantity related information which is numerical value information regarding a remaining quantity of a yarn Y remaining in a yarn feeding package Ps1 through an arithmetic operation. The machine base control device 5 controls a cutter of an auto doffer 10 to cut the yarn Y when it is determined that a quantity of the yarn Y included in a winding package Pw reaches a prescribed target winding quantity, and executes forming completion processing for controlling a winding device 19 to complete forming of the winding package Pw. Then, the machine base control device 5 executes replacement processing for controlling the auto doffer 10 to replace the winding package Pw with a new winding bobbin Bw. The machine base control device 5 executes the forming completion processing when it is determined that a numerical value of the residual quantity related information becomes equal to or lower than a prescribed value, thereby causing the winding device 19 to form a winding package Pw3s (forming forcible completion winding package) including the yarn Y smaller in quantity than the target winding quantity.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a yarn processing machine. [Background technology]

[0002] Patent Document 1 discloses an apparatus (yarn processing machine) that processes yarn unwound from a yarn supply package (described as a supply bobbin in Patent Document 1) formed by winding yarn around a yarn supply bobbin, and winds the yarn onto a winding bobbin to form a wound body (winding package). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2003-526584 Summary of the Invention [Problem to be solved by the invention]

[0004] Among the yarn layers formed by the yarn contained in the above-described yarn supply package, the radially inner portion of the yarn supply package (i.e., the portion near the yarn supply bobbin; hereinafter referred to as the inner layer portion) may be of inferior quality compared to the radially outer portion of the inner layer portion. There are several reasons for this, as follows: First, a yarn supply package is generally formed by winding a yarn onto a yarn supply bobbin having a slit formed on its circumferential surface. When the yarn begins to be wound onto such a yarn supply bobbin, the yarn is handled so that the tension of the yarn is higher than when it is wound, in order to ensure that the yarn is securely held in the portion of the yarn supply bobbin where the slit is formed. Furthermore, when the yarn begins to be wound onto a yarn supply bobbin, which is generally harder than a yarn, the yarn tends to be easily damaged by contact with the yarn supply bobbin, etc. If such a lower-quality yarn from the inner layer portion is mixed into the winding package for the product, the grade of the winding package may be lowered.

[0005] The object of the present invention is to prevent inferior quality yarn from being mixed into the wound package for the product. [Means for solving the problem]

[0006] A yarn processing machine according to a first aspect of the present invention is a yarn processing machine configured to process a yarn unwound from a yarn supply package and wind it onto a winding bobbin, the yarn processing machine including a yarn supply package holding unit that holds the yarn supply package, a winding device that is configured to wind the yarn onto the winding bobbin to form a winding package, a cutting unit that is configured to cut the yarn before it is wound onto the winding bobbin, a bobbin replacement unit that is configured to replace the winding package that has been formed by the winding device with a new winding bobbin as the winding bobbin and that is configured to thread the yarn onto the new winding bobbin, and a formation completion process that controls at least the cutting unit to cut the yarn and the winding device to complete formation of the winding package, and a bobbin replacement unit that controls the bobbin replacement unit to complete formation of the winding package. and a control unit configured to be able to execute a replacement process for replacing the winding package with the new winding bobbin and winding the yarn onto the new winding bobbin, wherein the control unit performs the formation termination process and the replacement process when it determines that the amount of yarn contained in the winding package being formed has reached a predetermined target winding amount, generates by calculation remaining amount-related information which is numerical information regarding the remaining amount of yarn remaining in the yarn supply package being unwound and held in the yarn supply package holding unit, and when it makes a remaining amount reduction determination that the numerical value of the remaining amount-related information has become equal to or less than a predetermined value, performs the formation termination process, thereby causing the winding device to form a formation-forced termination winding package which is the winding package having an amount of yarn less than the target winding amount.

[0007] In the present invention, when the remaining amount of yarn contained in the yarn supply package falls below a predetermined value, i.e., when the inner layer yarn starts to be unwound from the yarn supply package, the formation of the formation forced termination winding package is terminated. This prevents a low-quality yarn from being included in the formation forced termination winding package as a product. Therefore, it is possible to prevent a low-quality yarn from being mixed into the winding package for the product.

[0008] The yarn processing machine of the second invention is characterized in that, in the first invention, the control unit stores individual information of the winding package that has been forcibly terminated and information regarding the remaining amount reduction determination in association with each other.

[0009] In the present invention, by utilizing the information stored in the control unit, the winding package for which formation has been forcibly terminated can be distinguished from other winding packages.

[0010] A yarn processing machine of a third invention is the yarn processing machine of the first or second invention, wherein the yarn supply package holding unit is configured to hold a first yarn supply package and a second yarn supply package separate from the first yarn supply package as the yarn supply package, and is configured to supply yarn without interruption when a yarn connection portion is formed by connecting a starting end of the yarn included in the first yarn supply package and a finishing end of the yarn included in the second yarn supply package, and further includes a detection unit configured to detect information indicating occurrence of yarn supply package switching in the yarn supply package holding unit when unwinding of the yarn from the first yarn supply package ends, the yarn connection portion starts to move, and unwinding of the yarn from the second yarn supply package starts, and the control unit, when determining that the remaining amount of yarn is reduced while unwinding the yarn from the first yarn supply package, performs the formation termination process to terminate formation of the formation forced termination winding package, and after the formation forced termination winding package is formed, The method is characterized in that a replacement process is performed, and the yarn unwound and processed from the first yarn supply package after the determination of a decrease in remaining amount is wound onto the new winding bobbin attached to the winding device by the replacement process after the formation of the formation forced termination winding package, thereby causing the winding device to form an inner layer portion-containing winding package, which is the winding package having the yarn unwound from the first yarn supply package after the determination of a decrease in remaining amount, and when a switching determination is made to determine that the yarn supply package switching has occurred during the formation of the inner layer portion-containing winding package based on the detection result by the detection unit, the formation termination process is performed to terminate the formation of the inner layer portion-containing winding package, and after the inner layer portion-containing winding package is formed, the replacement process is performed, and the yarn unwound and processed from the second yarn supply package after the switching determination is wound onto the new winding bobbin attached to the winding device by the replacement process after the formation of the inner layer portion-containing winding package.

[0011] In the present invention, even after unwinding of the yarn from the first yarn supply package is completed, unwinding of the yarn from the second yarn supply package begins, allowing for continuous yarn supply. However, with this configuration, the formation of an inner layer portion-containing winding package may continue even after unwinding of the yarn contained in the inner layer portion of the first yarn supply package from the first yarn supply package is completed. In such a case, a large amount of high-quality yarn contained in the outer layer portion of the second yarn supply package may be mixed into the inner layer portion-containing winding package, resulting in waste of the high-quality yarn. Therefore, in the present invention, the inner layer portion-containing winding package is replaced with a new winding bobbin when a switching decision is made. This allows the yarn contained in the second yarn supply package to be wound onto the new winding bobbin immediately after the yarn supply package switching occurs. This prevents a large amount of high-quality yarn contained in the second yarn supply package from being mixed into the inner layer portion-containing winding package.

[0012] The yarn processing machine of the fourth invention is characterized in that, in the third invention, the control unit stores individual information of the inner layer portion-containing winding package and information regarding the switching judgment in association with each other.

[0013] In the present invention, by utilizing the information stored in the control unit, the inner layer portion-containing winding package can be distinguished from other winding packages.

[0014] The yarn processing machine of the fifth invention is characterized in that, in the third or fourth invention, it includes a marking unit configured to be able to perform a marking operation of attaching a mark to the winding package being formed by the winding device, and when the control unit makes the switching decision, it controls the marking unit to perform an inner layer portion-containing marking operation of attaching the mark to the inner layer portion-containing winding package as the marking operation.

[0015] In the present invention, by performing the inner layer portion-containing marking operation, it is possible to distinguish the inner layer portion-containing winding package from an unmarked winding package by appearance.

[0016] The yarn processing machine of the sixth invention is characterized in that, in any one of the first to fourth inventions, it is provided with a marking unit configured to be able to perform a marking operation of placing a mark on the winding package being formed by the winding device, and when the control unit determines that the remaining amount is decreasing, it controls the marking unit to perform an inner layer avoidance marking operation of placing the mark on the winding package that has been forced to be formed.

[0017] In the present invention, by performing the inner layer portion avoidance marking operation, it is possible to distinguish, by appearance, a winding package without a mark and a winding package in which formation has been forcibly terminated.

[0018] The yarn processing machine of the seventh invention is characterized in that, in the fifth invention, when the control unit determines that the remaining amount is decreasing, it controls the marking unit to perform an inner layer avoidance marking operation, which affixes the mark to the formation forced termination winding package, as the marking operation.

[0019] In the present invention, by performing the inner layer portion avoidance marking operation, it is possible to distinguish, by appearance, a winding package without a mark and a winding package in which formation has been forcibly terminated.

[0020] The yarn processing machine of the eighth invention is characterized in that, in the seventh invention, the marking unit is configured to be able to perform the marking operation so as to distinguish between the formation forced termination winding package and the inner layer portion-containing winding package, and the control unit controls the marking unit to perform the inner layer portion avoidance marking operation and the inner layer portion-containing marking operation so as to distinguish between the formation forced termination winding package and the inner layer portion-containing winding package.

[0021] In the present invention, the forced formation termination winding package and the inner layer portion-containing winding package can be easily distinguished by appearance, and therefore, even if the forced formation termination winding package and the inner layer portion-containing winding package are unintentionally mixed together, they can be separated.

[0022] A ninth invention is a yarn processing machine according to any one of the fifth to eighth inventions, wherein the marking unit includes the winding device, and the winding device has a traverse unit including a rotation drive unit configured to drive and rotate the winding package around the central axis of the winding package, a traverse guide for traversing the yarn, and a guide drive unit configured to drive the traverse guide back and forth along the axial direction of the winding package, and the control unit controls the rotation drive unit to rotate the winding package, while controlling the traverse unit to stop the traverse guide at a predetermined position in the axial direction, thereby causing the winding device to perform the marking operation.

[0023] In the present invention, the marking operation can be performed by so-called straight winding on the winding package, so that the marking operation can be performed by a simple means. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a block diagram showing the electrical configuration of yarn processing equipment including a false twisting machine according to an embodiment of the present invention. [Figure 2] FIG. 1 is a side view of a false twisting machine. [Figure 3] FIG. 1 is a schematic diagram showing a false twisting machine laid out along the yarn path. [Figure 4] FIG. 10 is an explanatory diagram showing a selection screen for a processing mode of the false twisting machine. [Figure 5] 10(a) to 10(c) are graphs showing the relationship between the yarn amount and time in the conventional processing mode. [Figure 6] 10 is a flowchart showing a procedure for replacing a winding bobbin when the remaining amount of yarn contained in a yarn supply package decreases. [Figure 7] 10(a) to 10(c) are graphs showing the relationship between the yarn amount and time in a processing mode for forming a wound package containing an inner layer portion. [Figure 8] 1A and 1B are schematic diagrams showing a winding package, and FIG. 1C is an explanatory diagram showing information relating to the rank of the winding package. [Figure 9] FIG. 10 is a schematic diagram of a false twisting machine according to a modified example. [Figure 10] FIG. 10 is a schematic diagram of a false twisting machine according to another modified example. DETAILED DESCRIPTION OF THE INVENTION

[0025] (Outline of yarn processing equipment) Next, an embodiment of the present invention will be described. A schematic diagram of a yarn processing equipment 100 including a false twisting machine 1 (described later) according to this embodiment will be described with reference to the block diagram of FIG. 1. As shown in FIG. 1, the yarn processing equipment 100 includes a plurality of false twisting machines 1 (yarn processing machines of the present invention) and a management device 101. The plurality of false twisting machines 1 are arranged, for example, along a predetermined machine frame longitudinal direction (see FIG. 2, etc.). Each false twisting machine 1 is configured to false twist a yarn Y (see FIG. 2, etc.) made of synthetic fibers such as polyester and nylon (polyamide-based fibers). The yarn Y is, for example, a multifilament yarn made of multiple filaments (not shown). As will be described later, each false twisting machine 1 is configured to process the yarn Y supplied from a yarn supplying unit 2 using a processing unit 3 and wind the yarn Y onto a winding bobbin Bw attached to a winding unit 4 to form a winding package Pw. Each false twisting machine 1 is controlled by a machine frame control device 5, which is a computer device provided in each false twisting machine 1.

[0026] The management device 101 is a host computer for comprehensively managing information acquired by multiple machine control devices 5. The management device 101 has a management input unit 101a (e.g., a keyboard), a management output unit 101b (e.g., a display), and a management storage unit 101c (e.g., a hard disk). The management device 101 and the multiple machine control devices 5 together constitute the information management unit 110 of this embodiment.

[0027] (Overall configuration of false twisting machine) Next, the overall configuration of the false twisting machine 1 will be described with reference to Figures 2 and 3. Figure 2 is a side view of the false twisting machine 1. Figure 3 is a schematic diagram of the false twisting machine 1 unfolded along the path (yarn path) of the yarn Y. The direction perpendicular to the plane of the paper in Figure 2 is the longitudinal direction of the machine base, and the left-to-right direction of the paper is the width direction of the machine base. The direction perpendicular to both the longitudinal direction and the width direction of the machine base is the up-down direction (vertical direction) in which gravity acts. The direction in which the yarn Y travels is the yarn travel direction. The false twisting machine 1 includes a yarn supplying unit 2 for supplying multiple yarns Y, a processing unit 3 for processing (false-twisting) the multiple yarns Y supplied from the yarn supplying unit 2, a winding unit 4 for winding the multiple yarns Y processed by the processing unit 3 onto a winding bobbin Bw, and a machine control device 5 (a control unit of the present invention).

[0028] The yarn supplying unit 2 has a creel stand 6 that holds multiple yarn supply packages Ps and supplies multiple yarns Y to the processing unit 3. The processing unit 3 is configured to unwind and process the multiple yarns Y from the yarn supplying unit 2. The processing unit 3 is configured to include, in order from the upstream side in the yarn running direction, a first feed roller 11, a twist stop guide 12, a first heating device 13, a cooling device 14, a false twist device 15, a second feed roller 16, a second heating device 17, and a third feed roller 18. These components of the processing unit 3 are provided, for example, on each of multiple spindles 9 (see FIG. 3 ), which will be described later. The winding unit 4 has multiple winding devices 19. Each winding device 19 winds the yarn Y that has been false twisted in the processing unit 3 onto a winding bobbin Bw to form a winding package Pw. The winding section 4 is also provided with a plurality of auto doffers 10 corresponding to the plurality of winding devices 19, respectively, for replacing the formed winding package Pw with a new empty winding bobbin Bw.

[0029] The machine control device 5 is configured to be able to control each of the components of the yarn supplying unit 2, the processing unit 3, and the winding unit 4. The machine control device 5 is, for example, a general computer device. The machine control device 5 has a machine input unit 5a, a machine output unit 5b, and a machine memory unit 5c (see FIG. 1). The machine input unit 5a is, for example, a touch panel and / or a keyboard (not shown), and is configured to be operable by an operator. The machine output unit 5b has, for example, a display (not shown), and is configured to be able to output information. The machine memory unit 5c is configured to store various information for controlling the components of the yarn supplying unit 2, the processing unit 3, and the winding unit 4. The machine control device 5 controls the components of the yarn supplying unit 2, the processing unit 3, and the winding unit 4 based on the various information. Alternatively, the machine control device 5 may indirectly control these components via various control devices (not shown) for controlling the components of the yarn supplying unit 2, the processing unit 3, and the winding unit 4. A management device 101, which is a host computer, is electrically connected to the machine control device 5. The machine control device 5 is capable of executing at least the "forming end process" and "exchange process" described below.

[0030] The false twisting machine 1 has a main frame 7 and a winding table 8 that are spaced apart in the width direction of the machine. The main frame 7 and the winding table 8 are arranged to extend over approximately the same length in the longitudinal direction of the machine. The main frame 7 and the winding table 8 are arranged to face each other in the width direction of the machine. The false twisting machine 1 has a unit called a span, which includes a pair of the main frame 7 and the winding table 8. In one span, various devices are arranged so that multiple yarns Y running side by side in the longitudinal direction of the machine can be false twisted simultaneously. In the false twisting machine 1, these spans are arranged symmetrically on the left and right sides of the drawing, with the center line C of the main frame 7 in the width direction of the machine as the axis of symmetry (the main frame 7 is common to both the left and right spans). In addition, multiple spans are arranged in the longitudinal direction of the machine.

[0031] Furthermore, a group of components through which one yarn Y passes after being supplied from the yarn supplying section 2 until it reaches the winding section 4 is called a "spindle." The false twisting machine 1 has the same number of spindles 9 (see FIG. 3) as the number of winding devices 19. Roughly speaking, the multiple spindles 9 are arranged side by side along the longitudinal direction of the machine frame. In an inclusive relationship, the false twisting machine 1 has multiple spans, and each span has multiple spindles 9. The false twisting machine 1 can false twist the yarn Y using the spindles 9 on which the yarn Y is hung.

[0032] (Yarn feeding section) The configuration of the yarn supplying unit 2 will be described with reference to FIGS. 2 and 3. The creel stand 6 of the yarn supplying unit 2 has a plurality of yarn supply package holding units 20 (see FIG. 3) provided corresponding to the plurality of spindles 9, respectively. Each of the plurality of yarn supply package holding units 20 is configured to allow two yarn supply packages Ps to be attached and detached. That is, the yarn supply package holding unit 20 has two package attachment units 21. For convenience of explanation, one of the two package attachment units 21 will be referred to as a first attachment unit 22, and the other will be referred to as a second attachment unit 23. The first attachment unit 22 and the second attachment unit 23 are each configured to allow one yarn supply package Ps to be attached and detached. The attachment and detachment of the yarn supply package Ps to and from the package attachment unit 21 is performed, for example, by an operator.

[0033] Each yarn supply package holding unit 20 of the yarn supply unit 2 is configured to be able to supply the yarn Y without interruption as follows. For example, as shown in FIG. 3 , a yarn supply package Ps1, which is any one of the multiple yarn supply packages Ps, is attached to the first attachment unit 22. A yarn supply package Ps2, which is different from the yarn supply package Ps1, is attached to the second attachment unit 23. The yarn Y is unwound from the yarn supply package Ps1. The end of the yarn Y included in the yarn supply package Ps1 and the beginning of the yarn Y included in the yarn supply package Ps2 are knotted (connected). As a result, a knot portion K (yarn connection portion) is formed between the two yarns Y. In this case, after the yarn supply package Ps1 becomes empty, the yarn Y can be supplied without interruption from the yarn supply package Ps2. Specifically, immediately after the supply of the yarn Y from the yarn supply package Ps1 is completed and the yarn supply package Ps1 becomes empty, the knot K is pulled downstream in the yarn running direction (toward the winding device 19), causing the yarn Y to be unwound from the yarn supply package Ps2. That is, after the yarn Y has been unwound from the yarn supply package Ps attached to one package attachment unit 21, the yarn Y begins to be unwound from the next yarn supply package Ps attached to the other package attachment unit 21. Hereinafter, for convenience of explanation, this event will be referred to as yarn supply package switching. This allows the yarn Y to be supplied without interruption. Thereafter, the empty yarn supply package Ps (yarn supply bobbin Bs) is replaced with a new yarn supply package Ps, for example, by an operator. Furthermore, the starting end of the yarn supply package Ps2 and the ending end of the new yarn supply package Ps are knotted together, for example, by an operator. By repeating this procedure, the yarn Y can be supplied without interruption from the yarn supply unit 2.

[0034] A yarn detection sensor 24 (detection unit of the present invention) is disposed downstream in the yarn running direction of each yarn supply package holder 20. The yarn detection sensor 24 is configured to detect whether the yarn Y is supplied from the first attachment unit 22 or the second attachment unit 23. As shown in FIG. 3 , the yarn detection sensor 24 has a first detection unit 25 and a second detection unit 26. The first detection unit 25 is configured to detect whether the yarn Y is supplied from the first attachment unit 22. The second detection unit 26 is configured to detect whether the yarn Y is supplied from the second attachment unit 23. The first detection unit 25 and the second detection unit 26 are, for example, optical sensors that optically detect the yarn Y. For more details about the yarn detection sensor 24, see, for example, Japanese Patent No. 5873105. Alternatively, the first detection unit 25 and the second detection unit 26 may be, for example, contact-type sensors.

[0035] Further, in the yarn running direction, a cutter 27 configured to be able to cut the running yarn Y is provided downstream of each yarn supply package holding unit 20 and upstream of the first feed roller 11. The cutter 27 is electrically connected to the machine control device 5.

[0036] (Processing department) The configuration of the processing unit 3 will be described with reference to Figures 2 and 3. For the sake of convenience, only a portion of the processing unit 3 corresponding to one weight 9 will be described below.

[0037] The first feed roller 11 is configured to unwind the yarn Y from the yarn supply package Ps attached to the yarn supplying section 2 and feed the yarn Y to the first heating device 13. The first feed roller 11 is disposed upstream of the twist stop guide 12 in the yarn running direction. The conveying speed of the yarn Y by the first feed roller 11 is substantially equal to the unwinding speed V (see FIG. 3 ) at which the yarn Y is unwound from the yarn supply package Ps. Information about the set value of the conveying speed of the yarn Y by the first feed roller 11 is stored in advance, for example, in the machine control device 5. The above-mentioned cutter 27 is provided upstream of the first feed roller 11 in the yarn running direction. When a yarn breakage occurs, the cutter 27 cuts the yarn Y, thereby preventing the yarn Y from winding around rotationally driven components such as the first feed roller 11.

[0038] The twist stop guide 12 is configured to prevent the twist imparted to the yarn Y by the false twist device 15 from propagating upstream in the yarn running direction of the twist stop guide 12. The twist stop guide 12 is disposed downstream in the yarn running direction of the first feed roller 11 and upstream in the yarn running direction of the first heating device 13.

[0039] The first heating device 13 is configured to heat the yarn Y fed from the first feed roller 11. The first heating device 13 is disposed downstream of the twist stop guide 12 in the yarn running direction and upstream of the cooling device 14 in the yarn running direction. In this embodiment, for simplicity of explanation, the first heating device 13 is configured to heat one yarn Y, but this is not limiting. The first heating device 13 may also be configured to be able to heat multiple yarns Y simultaneously.

[0040] The cooling device 14 is configured to cool the yarn Y heated by the first heating device 13. The cooling device 14 is disposed downstream in the yarn running direction of the first heating device 13 and upstream in the yarn running direction of the false twist device 15. In this embodiment, for simplicity of explanation, the cooling device 14 is configured to cool one yarn Y, but is not limited to this. The cooling device 14 may be configured to be able to cool multiple yarns Y simultaneously.

[0041] The false twist device 15 is configured to impart a twist to the yarn Y. The false twist device 15 is, for example, but not limited to, a so-called disk friction type false twist device. The false twist device 15 is disposed downstream of the cooling device 14 in the yarn running direction and upstream of the second feed roller 16 in the yarn running direction.

[0042] The second feed rollers 16 are configured to feed the yarn Y processed by the false twist device 15 to the second heating device 17. The conveying speed of the yarn Y by the second feed rollers 16 is faster than the conveying speed of the yarn Y by the first feed rollers 11. As a result, the yarn Y is stretched between the first feed rollers 11 and the second feed rollers 16. Information about the set value of the conveying speed of the yarn Y by the second feed rollers 16 is stored in advance in, for example, the machine control device 5.

[0043] The second heating device 17 is configured to heat the yarn Y fed from the second feed roller 16. The second heating device 17 extends in the vertical direction. For simplicity of explanation, the second heating device 17 is configured to heat one yarn Y, but is not limited to this. The second heating device 17 may also be configured to be able to heat multiple yarns Y simultaneously.

[0044] The third feed roller 18 is configured to feed the yarn Y heated by the second heating device 17 to the winding device 19. The speed at which the yarn Y is conveyed by the third feed roller 18 is slower than the speed at which the yarn Y is conveyed by the second feed roller 16. The yarn Y is relaxed between the second feed roller 16 and the third feed roller 18. Information about the set value of the speed at which the yarn Y is conveyed by the third feed roller 18 is stored in advance in, for example, the machine control device 5.

[0045] In the processing unit 3 configured as described above, the yarn Y drawn between the first feed roller 11 and the second feed roller 16 is twisted by the false twist device 15. The twist formed by the false twist device 15 propagates to the twist stop guide 12 but does not propagate upstream of the twist stop guide 12 in the yarn traveling direction. The yarn Y, which has been drawn and twisted, is heated and heat-set by the first heating device 13 and then cooled by the cooling device 14. The yarn Y is untwisted downstream from the false twist device 15, but the heat-set maintains the wavy false-twisted state of each filament. Furthermore, the yarn Y false-twisted by the false twist device 15 is relaxed between the second feed roller 16 and the third feed roller 18, heat-treated by the second heating device 17, and then guided downstream in the yarn traveling direction. Finally, the yarn Y fed from the third feed roller 18 is wound onto a winding bobbin Bw by the winding device 19. This forms a winding package Pw.

[0046] (winding section) The configuration of the winding unit 4 will be described with reference to FIGS. 2 and 3. The winding unit 4 has a plurality of winding devices 19 (marking units of the present invention) and a plurality of auto-doffers 10 (see FIG. 2; bobbin replacement units of the present invention) provided corresponding to the respective winding devices 19. Each of the plurality of winding devices 19 corresponds to a respective one of the plurality of spindles 9 (see FIG. 3). Each winding device 19 is configured to wind the yarn Y onto a winding bobbin Bw. Each winding device 19 has, for example, a fulcrum guide 31, a traverse device 32 (traverse unit of the present invention), a cradle 33, and a winding roller 34. The fulcrum guide 31 is a guide that serves as a fulcrum when the yarn Y is traversed. The traverse device 32 is configured to traverse the yarn Y using, for example, a traverse guide 35 attached to an endless belt that is driven reciprocally by a motor 36 (guide drive unit of the present invention). That is, the traverse device 32 is configured to reciprocate the traverse guide 35 along the axial direction of the winding bobbin Bw (winding package Pw) (hereinafter referred to as the winding bobbin axial direction). The cradle 33 is configured to support the winding bobbin Bw (winding package Pw) rotatably around the central axis of the winding package Pw. The winding roller 34 is configured to rotate the winding package Pw around the central axis and to apply contact pressure to the surface of the winding package Pw. The winding roller 34 is, for example, rotated by a motor 37 (a rotational drive unit of the present invention) while in contact with the surface of the winding package Pw. As a result, the winding package Pw is rotated by frictional force, and contact pressure is applied to the surface of the winding package Pw, thereby shaping the winding package Pw. Note that instead of the winding roller 34 being rotated, the winding package Pw may be directly rotated by a motor (not shown).

[0047] The auto doffer 10 is configured to remove the winding package Pw from the winding device 19 and attach an empty winding bobbin Bw to the winding device 19. In other words, the auto doffer 10 is configured to be able to exchange the formed winding package Pw for an empty winding bobbin Bw in the winding section 4. The auto doffer 10 also has a cutter (not shown) that can cut the yarn Y near the winding package Pw. The running yarn Y is cut by the cutter, thereby completing the formation of the winding package Pw. Even after the yarn Y is cut by the cutter, the yarn Y continues to be unwound from the yarn supply package Ps at approximately the same speed as when it is wound onto the winding bobbin Bw and supplied to the winding device 19. The auto doffer 10 has a suction (not shown) that can suck, capture, and hold the running yarn Y supplied to the winding device 19 after the formation of a certain winding package Pw is completed and until the yarn Y starts to be wound onto the next winding bobbin Bw. The portion of the yarn Y that has been sucked by suction is sucked and removed until the yarn Y is wound onto the next winding bobbin Bw onto which the yarn Y will be wound. Furthermore, the auto doffer 10 is configured to wind the yarn Y onto an empty winding bobbin Bw attached to the winding device 19. For more details on the structure of the auto doffer 10, see, for example, Japanese Patent Application Laid-Open No. 6-212521.

[0048] In the winding section 4 configured as described above, the yarn Y fed from the third feed roller 18 is wound onto the winding bobbin Bw by each winding device 19 to form a winding package Pw (winding process). The yarn Y is cut by the cutter of the auto doffer 10 and the operation of the winding device 19 stops, completing the winding process of the yarn Y onto the winding bobbin Bw (forming the winding package Pw). Almost simultaneously, the yarn Y supplied to the winding device 19 is sucked and held by suction, and the formed winding package Pw is removed from the cradle 33 by the auto doffer 10. Immediately thereafter, a new, empty winding bobbin Bw is attached to the cradle 33 by the auto doffer 10, and the yarn Y is hung on the new winding bobbin Bw. This makes it possible to start winding the yarn Y onto the new winding bobbin Bw. Hereinafter, for convenience of explanation, the process in which the machine control device 5 controls the cutter of the auto doffer 10 to cut the yarn Y and controls the winding device 19 to end the formation of the winding package Pw will be referred to as the formation end process. Also, for convenience of explanation, the process in which the machine control device 5 controls the auto doffer 10 to replace the wound package Pw that has been formed with a new winding bobbin Bw and to wind the yarn Y onto the new winding bobbin Bw will be referred to as the replacement process.

[0049] Here, among the yarn layers formed by the yarn Y contained in the above-described yarn supply package Ps, the radially inner portion of the yarn supply package Ps (i.e., the portion near the yarn supply bobbin Bs; hereinafter, referred to as the inner layer portion) may be of lower quality than the radially outer portion of the inner layer portion. There are several reasons for this, as follows: First, the yarn supply package Ps is generally formed by winding a yarn onto a yarn supply bobbin Bs having a slit (not shown) formed on its circumferential surface. When the yarn starts to be wound onto such a yarn supply bobbin Bs, the yarn Y is handled so that the tension of the yarn Y is higher than that during winding, in order to ensure that the yarn Y is securely held in the portion of the yarn supply bobbin Bs where the slit is formed. Furthermore, when the yarn Y starts to be wound onto the yarn supply bobbin Bs, which is generally harder than the yarn Y, the yarn Y tends to be easily damaged by contact with the yarn supply bobbin Bs, etc. If the yarn Y of the inner layer portion, which has such poor quality, is mixed into the winding package Pw for the product, the grade of the winding package Pw may be lowered.

[0050] Therefore, in this embodiment, in order to prevent the low-quality yarn Y from being mixed into the winding package Pw for the product, the machine control device 5 performs the process described below. Note that, hereinafter, unless otherwise specified, the description will be limited to one predetermined spindle 9 among the multiple spindles 9.

[0051] First, as a premise, the machine control device 5 is configured to be able to calculate the remaining amount (hereinafter, remaining amount calculation) of the yarn Y contained in a yarn supply package Ps from which the yarn Y is being unwound at a predetermined reference time (hereinafter, unwinding package). In this embodiment, the reference time means the time when the remaining amount calculation starts. Furthermore, the machine control device 5 is configured to be able to set in advance the contents of the process (hereinafter, reduction process) to be performed when the remaining amount of the yarn Y contained in the yarn supply package Ps decreases. The remaining amount calculation and the reduction process will be described in more detail below.

[0052] (Remaining amount calculation) The remaining amount calculation will now be described. The machine control device 5 is configured to be able to calculate (i.e., estimate) the remaining amount of yarn Y contained in the package being unwound at a reference time using initial amount information, unwinding unit amount information, and cumulative time information, which will be described later. Hereinafter, for convenience of explanation, the initial amount information, unwinding unit amount information, and cumulative time information will also be collectively referred to as basic information.

[0053] The initial amount information is information about the initial amount (initial weight or initial length) of yarn Y contained in the yarn supply package Ps before the yarn Y starts to be unwound. The initial amount information is, for example, set in advance in the machine control device 5 as common information related to all yarn supply packages Ps of all spindles 9 of one false twisting machine 1. More specifically, in this embodiment, information about the above-mentioned initial weight WF and information about the fineness of the yarn Y (weight per unit length) are stored as initial amount information in the machine control device 5. The weight of the yarn supply package Ps is, for example, kg. The fineness of the yarn Y is assumed to be F. The fineness is, for example, dtex. Decitex is the weight (g) of the yarn Y per 10,000 meters.

[0054] The unwinding unit amount information is information relating to the amount of yarn Y unwound from the yarn supply package Ps per unit time. The unwinding unit amount information is, for example, information on the unwinding speed V described above. In this embodiment, for the sake of convenience, it is assumed that the unwinding speed V is approximately constant during the winding process. The unit of the unwinding speed is, for example, m / min. The unwinding unit amount information is, for example, set in advance in the machine control device 5 as common information for all spindles 9 of one false twisting machine 1. The machine control device 5 acquires the information on the unwinding speed V based on, for example, information on the set value of the rotation speed of the first feed roller 11.

[0055] The accumulated time information is information about the accumulated value (accumulated time) of the time during which the yarn Y is unwound from the yarn supply package Ps. For convenience of explanation, the accumulated time related to the yarn supply package Ps from which the yarn Y is unwound is referred to as "tin." The accumulated time information is acquired as follows. First, when the yarn Y starts to be unwound from, for example, the above-described yarn supply package Ps1 (see FIG. 3), the yarn detection sensor 24 detects the start of unwinding of the yarn Y from the first attachment unit 22. At this time, the machine control device 5 sets "tin" to a predetermined initial time (reset process). The initial time is, for example, zero. Thereafter, while the yarn Y is being unwound from the yarn supply package Ps, the machine control device 5 increases "tin" (updates "tin") as time passes. Furthermore, for example, when the unwinding of the yarn Y from the yarn supply package Ps is temporarily stopped due to a yarn breakage or other reason (in other words, when a stoppage time occurs), the machine control device 5 temporarily stops updating "tin." In this way, the machine control device 5 acquires, as the accumulated time (tin), only the time (detection time) at which the yarn detection sensor 24 detects that the yarn Y has been unwound from the yarn supply package Ps. When the yarn Y is being unwound from any yarn supply package Ps, the machine control device 5 can acquire accumulated time information about that yarn supply package Ps.

[0056] During the winding process, the machine control device 5 determines whether a yarn supply package switch, in which the yarn supply package Ps supplying the yarn Y is switched, has occurred based on the detection result of the yarn detection sensor 24. For example, referring to FIG. 3 , a yarn supply package switch occurs when the yarn Y from the yarn supply package Ps1 has finished being unwound (unwinding completed) and the yarn Y is first unwound from the yarn supply package Ps2. When the state of the yarn detection sensor 24 switches from a state in which the yarn Y is detected by one of the first detection unit 25 and the second detection unit 26 to a state in which the yarn Y is detected by the other of the first detection unit 25 and the second detection unit 26, the machine control device 5 determines that a yarn supply package switch has occurred. When the machine control device 5 determines that a yarn supply package switch has occurred, it performs the reset process described above and sets tin to a predetermined initial time.

[0057] In this manner, the main control device 5 generates the initial amount information, the unwinding unit amount information, and the cumulative time information as basic information through calculation (in other words, obtains them).

[0058] When the remaining amount of yarn Y contained in the package being unwound at the reference time is WR, the machine control device 5 uses the basic information to calculate the remaining amount based on the following formula: Note that "1000" and "10000" in the formula are coefficients for unifying the units of the values ​​on both sides to "kg."

[0059] WR=WF-(V×F / 10000)×tin / 1000

[0060] Furthermore, when the ratio of the remaining amount of yarn Y contained in the package being unwound to the initial amount (hereinafter referred to as the remaining amount ratio) is R, the machine control device 5 can calculate the remaining amount ratio based on the following formula: The machine control device 5 may calculate the remaining amount ratio as a percentage of WR to WF (remaining amount percentage).

[0061] R=WR / WF

[0062] Alternatively, the machine control device 5110 may calculate the remaining amount ratio using only basic information without using the WR.

[0063] Furthermore, when the remaining time during which the yarn Y can be supplied from the package being unwound is tR, the machine control device 5 may estimate tR based on the following formula, for example: The unit of tR is "min."

[0064] tR=WF×1000 / (V×F / 10000)-tin

[0065] (Configuration for processing when decreasing) The configuration for processing during reduction will be described with reference to Fig. 4. Fig. 4 is an explanatory diagram showing a selection screen for processing modes of the false twisting machine 1. For ease of explanation, it is assumed that a display is provided as the machine output unit 5b and a touch panel arranged to overlap the display is provided as the machine input unit 5a (see Fig. 4). However, the configurations of the machine input unit 5a and the machine output unit 5b are not limited to this.

[0066] The machine control device 5 stores information on multiple options for the process when the amount of paper is reduced in the machine memory unit 5c. The machine control device 5 is configured, for example, to be able to display the options for the process when the amount of paper is reduced on the machine output unit 5b (see screen S1 in FIG. 4). The machine control device 5 is configured to be able to preset the content of the process when the amount of paper is reduced in accordance with input by the operator to the machine input unit 5a. For example, the upper part of screen S1 displays the options "None" and "Form a winding package containing an inner layer portion." "None" means that no special process is performed even if the remaining amount of the package being unwound decreases. "Form a winding package containing an inner layer portion" means that a winding package containing an inner layer portion, as described below, is formed when the remaining amount of the package being unwound decreases. In addition, for example, an input field for "processing conditions" is displayed in the lower part of screen S1. The "processing conditions" indicate what conditions must be met to start the execution of the process when the amount of paper is reduced. 4, the machine control device 5 is configured to execute a process for reducing the amount of remaining material when the remaining amount ratio (R) described above falls to 5% or less. The machine control device 5 preselects "formation of a winding package containing an inner layer portion" as a process for reducing the amount of remaining material, and executes a process for forming a winding package containing an inner layer portion, which will be described later, when predetermined processing conditions are met.

[0067] (When the decrease process is not performed) For reference in understanding the following explanation, the unwinding of the yarn Y from each yarn supply package Ps and the formation of each winding package Pw when the reduction process is not performed (when the above-mentioned "None" is selected) will be described with reference to FIGS. 5(a) to 5(c). FIGS. 5(a) to 5(c) are graphs showing the relationship between the yarn amount and time in a conventional processing mode in which the reduction process is not performed. More specifically, FIG. 5(a) is a graph showing the relationship between the remaining amount (vertical axis) of the yarn Y contained in the yarn supply package Ps (specifically, yarn supply packages Ps1 and Ps3) attached to the first attachment unit 22 and time (horizontal axis). FIG. 5(b) is a graph showing the relationship between the remaining amount (vertical axis) of the yarn Y contained in the yarn supply package Ps (specifically, yarn supply package Ps2) attached to the second attachment unit 23 and time (horizontal axis). 5(c) is a graph showing the relationship between the amount (vertical axis) of the yarn Y wound onto the winding bobbin Bw (specifically, winding bobbins Bw1, Bw2, Bw3, Bw4, and Bw5) and time (horizontal axis). In all of the graphs in FIGS. 5(a) to 5(c), the origin is time t0, when the yarn Y is first unwound from the yarn supply package Ps1. In this embodiment, the weight (initial weight) of each yarn supply package Ps when the yarn Y has never been unwound from the yarn supply package Ps (i.e., when the yarn is fully wound) is WF.

[0068] First, before time t0, a full yarn supply package Ps1 is loaded into the first installation unit 22. The initial weight of the yarn Y contained in the yarn supply package Ps1 is WF. Also, before time t0, a full yarn supply package Ps2 is loaded into the second installation unit 23. The end end of the yarn Y contained in the yarn supply package Ps1 and the beginning end of the yarn Y contained in the yarn supply package Ps2 are knotted to form a knot K. Also, at time t0, threading of the yarn Y onto each portion of a predetermined spindle 9 begins. At the same time, at time t0, the yarn Y begins to be unwound from the full yarn supply package Ps1. Then, at time ts1, immediately after time t0, threading onto the winding bobbin Bw1 attached to the winding device 19 is completed, and the yarn Y begins to be wound onto the winding bobbin Bw1 (i.e., formation of the winding package Pw1 begins). From the time when the yarn Y starts to be unwound from the yarn supply package Ps1 until the time when threading onto the winding bobbin Bw1 is completed, the yarn Y is sucked and caught by the suction of the auto doffer 10. In this embodiment, the unwinding speed of the yarn Y during threading is approximately equal to the unwinding speed (V) when the yarn Y is being wound onto the winding bobbin Bw.

[0069] As time passes, the remaining amount (remaining weight) of the yarn Y contained in the yarn supply package Ps1 decreases, and the winding amount (winding weight) of the yarn Y wound onto the winding bobbin Bw1 increases. That is, as time passes, the amount of yarn Y contained in the winding package Pw1 increases. The machine control device 5 counts the time elapsed since the start of formation of the winding package Pw1. The machine control device 5 uses this time information to calculate the amount of yarn Y contained in the winding package Pw1. When the machine control device 5 determines that the amount of yarn Y contained in the winding package Pw1 has reached a predetermined target winding amount, it ends the formation of the winding package Pw1 (executes the formation end process). More specifically, for example, at time te1, the machine control device 5 causes the cutter of the auto doffer 10 to cut the yarn Y, thereby ending the winding process of the yarn Y onto the winding bobbin Bw1. That is, time te1 is the winding end time when winding of the yarn Y onto the winding bobbin Bw1 ends (formation of the winding package Pw1 ends). Only the yarn Y supplied from the yarn supply package Ps1 is wound onto the winding bobbin Bw1. The cutting of the yarn Y by the cutter and the suction capture of the yarn Y by suction (i.e., the start of suction removal of the yarn Y) are performed almost simultaneously. Furthermore, the machine control device 5 controls the auto doffer 10 to execute the replacement process. That is, the machine control device 5 controls the auto doffer 10 to remove the winding bobbin Bw1 (winding package Pw1) from the cradle 33, attach the winding bobbin Bw2 to the cradle 33, and perform yarn threading onto the winding bobbin Bw2. As a result, at time ts2, immediately after time te1, the attachment of the winding bobbin Bw2 to the cradle 33 by the auto doffer 10 is completed, and the winding process of the yarn Y onto the winding bobbin Bw2 is started. There is a slight time lag tL (see FIG. 5(c)) between the winding end time (time te1) for the winding bobbin Bw1 and the winding start time (time ts2) for the winding bobbin Bw2 onto which the yarn Y is wound next after the winding bobbin Bw1. As described above, even when the winding bobbin Bw is being replaced, the yarn Y is unwound from the supply yarn package Ps at approximately the same speed as when it is being wound onto the winding bobbin Bw.Furthermore, at time te2, the winding process of the yarn Y onto the winding bobbin Bw2 (forming the winding package Pw2) ends, and at time ts3, the winding process of the yarn Y onto the winding bobbin Bw3 starts.

[0070] At time ta1 (see FIG. 5(a)), which is later than time ts3, the yarn supply package Ps1 attached to the first attachment unit 22 becomes empty. That is, time ta1 is the unwinding end time when the yarn Y has been completely unwound from the yarn supply package Ps1. At the same time that the yarn supply package Ps1 becomes empty, at time tb1 (= time ta1), the knot K formed by knotting the yarn Y included in the yarn supply package Ps1 and the yarn Y included in the yarn supply package Ps2 is pulled toward the winding device 19. As a result, the yarn Y begins to be unwound from the yarn supply package Ps2 attached to the second attachment unit 23. That is, time tb1 is the unwinding start time when the yarn Y is first unwound from the yarn supply package Ps2 (when the yarn Y begins to be unwound). Thereafter, at time te3, the winding process of the yarn Y onto the winding bobbin Bw3 (the formation of the winding package Pw3) ends. Both the yarn Y unwound from the yarn supply package Ps1 and the yarn Y unwound from the yarn supply package Ps2 are wound onto the winding bobbin Bw3. The winding package Pw3 also includes a knot K. Thereafter, at time ts4, the winding process of the yarn Y onto the winding bobbin Bw4 starts. At time te4, the winding process of the yarn Y onto the winding bobbin Bw4 (the formation of the winding package Pw4) ends. Only the yarn Y unwound from the yarn supply package Ps2 is wound onto the winding bobbin Bw4.

[0071] Furthermore, after time ta1 and before the yarn supply package Ps2 becomes empty (e.g., at time ta2), the operator removes the empty yarn supply package Ps1 from the first installation unit 22 and installs a new, full yarn supply package Ps3 in the first installation unit 22 (yarn supply package replacement operation). At this time, the remaining weight of the yarn supply package Ps3 is WF. Thereafter, at an appropriate timing, the operator knots (connects) the end end of the yarn Y contained in the yarn supply package Ps2 and the beginning end of the yarn Y contained in the yarn supply package Ps3 to form a knot K (see FIG. 3). The operator may perform the knotting operation (connecting operation) manually. Alternatively, the operator may perform the knotting operation by operating, for example, a portable knotting device (not shown).

[0072] Thereafter, from time ts5 to time te5, the yarn Y is wound onto the winding bobbin Bw5 (to form the winding package Pw5). At time tb2 between time ts5 and time te5, the yarn supply package Ps2 attached to the second attachment unit 23 becomes empty. At time ta3 (=time tb2), simultaneously with the yarn supply package Ps2 becoming empty, the yarn Y begins to be unwound from the yarn supply package Ps3 attached to the first attachment unit 22.

[0073] When the reduction process is not performed, the yarn Y is unwound from each supply yarn package Ps as described above, and each winding package Pw is formed.

[0074] (Procedure for forming a winding package containing an inner layer portion) Next, the procedure for forming a winding package containing an inner layer portion when "forming a winding package containing an inner layer portion" is selected as the reduction processing mode will be described with reference to FIGS. 6 to 8(c). FIG. 6 is a flowchart showing the procedure for replacing a winding bobbin Bw when the remaining amount of yarn Y contained in the yarn supply package Ps decreases. FIGS. 7(a) to 7(c) are graphs showing the relationship between the yarn amount and time in the processing mode for forming a winding package containing an inner layer portion. Like FIG. 5(a), FIG. 7(a) is a graph showing the relationship between the remaining amount (vertical axis) of yarn Y contained in the yarn supply package Ps attached to the first attachment unit 22 and time (horizontal axis). Like FIG. 5(b), FIG. 7(b) is a graph showing the relationship between the remaining amount (vertical axis) of yarn Y contained in the yarn supply package Ps attached to the second attachment unit 23 and time (horizontal axis). Like FIG. 5(c), FIG. 7(c) is a graph showing the relationship between the amount of yarn Y wound onto the winding bobbin Bw (vertical axis) and time (horizontal axis). 8(a) and 8(b) are schematic diagrams showing a winding package Pw. Fig. 8(c) is an explanatory diagram showing information relating to the rank of the winding package Pw. Fig. 8(c) shows, for example, a screen S2 relating to information about the winding package Pw, which is displayed on the machine output unit 5b.

[0075] As in the case where the reduction process is not performed described above, in the initial state, for example, the yarn supply package Ps1 is attached to the first attachment unit 22, and the yarn supply package Ps2 is attached to the second attachment unit 23. Furthermore, the yarn Y unwound from the yarn supply package Ps1 is processed by the processing unit 3, and the yarn is wound onto the winding bobbin Bw1. The yarn supply package Ps1 corresponds to the first yarn supply package of the present invention. The yarn supply package Ps2 corresponds to the second yarn supply package of the present invention.

[0076] The machine control device 5 calculates, for example, the remaining amount ratio of the yarn Y remaining in the yarn supply package Ps1 every time a predetermined time has elapsed. Hereinafter, for convenience of explanation, the information on the numerical value of the remaining amount ratio will be referred to as remaining amount-related information. In other words, the machine control device 5 generates (acquires) the remaining amount-related information by calculation every time a predetermined time has elapsed. The machine control device 5 determines whether the remaining amount ratio is equal to or less than a predetermined value (S101). The predetermined value is the value set when the processing conditions described above are set (see "5% or less" in FIG. 4). The machine control device 5 forms a winding package Pw on a predetermined spindle 9 until the remaining amount ratio becomes equal to or less than the predetermined value (S101: No), in the same way as when the reduction processing is not performed. In this example, winding packages Pw1 and Pw2 are formed in order, in the same way as when the reduction processing is not performed. The machine control device 5 evaluates the winding packages Pw1 and Pw2 as the winding packages Pw with the highest rank (see, for example, "A1" in FIG. 8(c)). The machine control device 5 stores individual information (see "ID" in FIG. 8(c)) of each winding package Pw in association with its rank.

[0077] When it is determined that the remaining amount ratio has fallen below a predetermined value (remaining amount reduction determination; S101: Yes), the machine control device 5 controls the winding device 19 to perform the following inner layer portion avoidance marking operation on the winding package Pw being formed (S102). For example, the remaining amount ratio reaches the predetermined value when the remaining amount of yarn Y remaining in the yarn supply package Ps1 becomes W1 (see time t1 in FIG. 7(a)). Also, when the remaining amount ratio reaches the predetermined value, for example, the yarn Y is wound onto the winding bobbin Bw3, and the winding package Pw3s is formed (see FIG. 7(c)). When the machine control device 5 determines that the remaining amount has decreased while unwinding the yarn Y from the yarn supply package Ps1, the machine control device 5 controls the motor 37 (see FIG. 3) to rotate the winding package Pw3s, and controls the motor 36 to stop the traverse guide 35 at a predetermined first position in the winding bobbin axial direction, as the inner layer portion avoidance marking operation. As a result, the winding package Pw3s is wound in a so-called straight winding manner, and a mark M1 (see FIG. 8(a)) is formed on the winding package Pw3s. In other words, a mark is applied to the winding package Pw3s. The inner layer portion avoidance marking operation is included in the marking operation of the present invention.

[0078] Furthermore, the machine control device 5 controls the auto doffer 10 to cut the running yarn Y and terminate the formation of the winding package Pw3s (formation termination process). Thereafter, the machine control device 5 controls the auto doffer 10 to replace the winding package Pw3s with a new winding bobbin Bw4 in the winding device 19 (S103, replacement process). Furthermore, the machine control device 5 controls the auto doffer 10 to thread the yarn onto the new winding bobbin Bw4 (the new winding bobbin of the present invention). This prevents the yarn Y contained in the inner layer of the yarn supply package Ps1 from being mixed into the winding package Pw3s. The winding package Pw3s is a package smaller than the winding packages Pw1 and Pw2 (see FIG. 7(c)). In other words, the formation of the winding package Pw3s is terminated in a state in which the amount of yarn Y in the winding package Pw3s being formed is smaller than the target winding amount. The winding package Pw3s corresponds to the formation forced termination winding package of the present invention.

[0079] Furthermore, the machine control device 5 evaluates the winding package Pw3s as a winding package Pw of a lower rank (see, for example, "A2" in FIG. 8(c)) than the winding packages Pw1 and Pw2, and stores the individual information of the winding package Pw3s in association with the rank. In addition, in S103, the machine control device 5 stores the individual information of the winding package Pw3s in association with information indicating that a determination was made as to whether the remaining amount had decreased during the formation of the winding package Pw3s (see, for example, "Avoiding contamination of inner layer portion" in FIG. 8(c)).

[0080] Next, the machine control device 5 controls the winding device 19 to start winding the yarn Y onto the winding bobbin Bw4 to form the winding package Pw4r. While the winding package Pw4r is being formed, the machine control device 5 determines whether the above-described yarn supply package switch has occurred based on the detection result of the yarn detection sensor 24 (S104). The machine control device 5 continues to form the winding package Pw4r until the yarn supply package switch occurs (S104: No). When the yarn supply package switch occurs, the yarn Y finishes being unwound from the yarn supply package Ps1, the knot portion K is pulled, and the yarn Y begins to be unwound from the yarn supply package Ps2 (see FIGS. 7(a) and 7(b)). When the machine control device 5 determines that the yarn supply package switch has occurred (switching determination, S104: Yes), it performs the following inner layer portion-containing marking operation on the winding package Pw4r (S105). When the machine control device 5 determines to switch during winding of the yarn Y onto the winding bobbin Bw4, it controls the motor 37 to rotate the winding package Pw4r, and controls the motor 36 to stop the traverse guide 35 at a predetermined second position in the axial direction of the winding bobbin, as an inner layer portion-containing marking operation. As a result, the winding package Pw4r is wound in a straight line, and a mark M2 (see FIG. 8(b)) is formed on the winding package Pw4r. In other words, a mark is applied to the winding package Pw4r. The inner layer portion-containing marking operation is included in the marking operation of the present invention.

[0081] The machine control device 5 may control the motor 36 so that the position of the mark M1 in the axial direction of the winding bobbin differs from the position of the mark M2 in the axial direction of the winding bobbin. For example, the mark M1 may be located midway between the end face of the winding package Pw3s and the center of the winding package Pw3s or in the vicinity thereof in the axial direction of the winding bobbin. The mark M2 may be located approximately in the center of the winding package Pw4r in the axial direction of the winding bobbin. This allows the winding package Pw3s and the winding package Pw4r to be easily distinguished from each other by appearance.

[0082] Furthermore, the machine control device 5 controls the cutter of the auto doffer 10 at a predetermined timing to cut the running yarn Y so that the nodule K is included in the winding package Pw4r, and ends the formation of the winding package Pw4r (formation ending process). As a result, the yarn Y included in the inner layer of the yarn supply package Ps1 and the nodule K are wound onto the winding bobbin Bw4 to form the winding package Pw4r. Alternatively, the machine control device 5 may cause the cutter of the auto doffer 10 to cut the running yarn Y at a timing such that the nodule K is not included in the winding package Pw4r but is instead sucked and removed by the suction of the auto doffer 10.

[0083] Thereafter, the machine control device 5 controls the auto doffer 10 to replace the winding package Pw4r with a new winding bobbin Bw5 (a new winding bobbin of the present invention) in the winding device 19 (S106: replacement process). The winding package Pw4r, like the winding package Pw3s, is a smaller package than the winding packages Pw1 and Pw2 (see FIG. 7(c)). The winding package Pw4r is intentionally formed as a winding package Pw of lower quality than the other winding packages Pw in order to remove the yarn Y contained in the inner layer portion of the yarn supply package Ps1. The winding package Pw4r may be discarded. Alternatively, the winding package Pw4r may be treated as a lower-ranked winding package Pw. The winding package Pw4r formed by winding the yarn Y onto the winding bobbin Bw4 corresponds to the inner layer portion-containing winding package of the present invention. Furthermore, the machine control device 5 controls the auto doffer 10 to thread the yarn onto a new winding bobbin Bw5. The machine control device 5 controls the winding device 19 to start winding the yarn Y onto the winding bobbin Bw5.

[0084] Furthermore, the machine control device 5 evaluates the winding package Pw4r as a winding package Pw with an even lower rank (see, for example, "B" in FIG. 8(c)) than the winding packages Pw1, Pw2, and Pw3r. The machine control device 5 stores the individual information of the winding package Pw4r in association with the rank. In addition, in S106, the machine control device 5 stores the individual information of the winding package Pw4r in association with information indicating that a switching decision was made during the formation of the winding package Pw4r (see, for example, "Contains inner layer portion" in FIG. 8(c)).

[0085] Furthermore, the yarn Y is wound onto the winding bobbin Bw5 to form the winding package Pw5. The winding package Pw5 is formed as a high-ranking winding package Pw, similar to the winding packages Pw1 and Pw2 (see FIG. 8(c)). Further explanation of the subsequent processing will be omitted.

[0086] As described above, when the remaining amount of the yarn Y contained in the yarn supply package Ps1 becomes equal to or less than a predetermined value, that is, when the yarn Y of the inner layer portion starts to be unwound from the yarn supply package Ps1, the formation of the winding package Pw3s is terminated (formation termination process). This prevents the yarn Y of poor quality from being included in the winding package Pw3s as a product. Therefore, it is possible to prevent the yarn Y of poor quality from being mixed into the winding package Pw for product.

[0087] Furthermore, the machine control device 5 stores individual information about the winding package Pw3s (winding package whose formation has been forcibly terminated) and information related to the determination of a decrease in the remaining amount in association with each other. By using the information stored in the machine control device 5, the winding package Pw3s can be distinguished from other winding packages Pw.

[0088] Furthermore, when the switching determination is made, the winding package Pw4r is replaced with a new winding bobbin Bw5. As a result, the yarn Y contained in the yarn supply package Ps2 can be wound onto the new winding bobbin Bw5 immediately after the yarn supply package switching occurs. This prevents a large amount of high-quality yarn Y contained in the yarn supply package Ps2 from being mixed into the winding package Pw4r.

[0089] The machine control device 5 also stores individual information about the winding package Pw4r (the inner layer portion-containing winding package) in association with information about the switching determination. By using the information stored in the machine control device 5, the winding package Pw4r can be distinguished from other winding packages Pw.

[0090] Furthermore, the machine control device 5 causes the winding device 19 to perform an inner layer portion containing marking operation, which makes it possible to distinguish the winding package Pw4r from the winding package Pw that does not have the mark M2 by appearance.

[0091] Furthermore, the machine control device 5 causes the winding device 19 to perform an inner layer portion avoidance marking operation, which makes it possible to distinguish the winding package Pw without the mark M1 from the winding package Pw3s by appearance.

[0092] Furthermore, the machine control device 5 causes the winding device 19 to perform an inner layer portion avoidance marking operation and an inner layer portion presence marking operation so that the winding package Pw3s and the winding package Pw4r can be distinguished from each other. This makes it easy to distinguish the winding package Pw3s from the winding package Pw4r by appearance. Therefore, even if the winding package Pw3s and the winding package Pw4r are unintentionally mixed, they can be separated.

[0093] Furthermore, as a marking operation, so-called straight winding can be applied to the winding package Pw, so that the marking operation can be performed by a simple means.

[0094] Next, a modified example of the embodiment will be described, with the same reference numerals being used to designate components having the same configuration as the embodiment, and the description thereof will be omitted as appropriate.

[0095] (1) In the above embodiment, the machine control device 5 stores information on "none" and "forming a winding package containing an inner layer portion" as options for the process when the yarn Y is reduced. Additionally, the machine control device 5 may be configured to select, as an option for the process when the yarn Y is reduced, a process of cutting the yarn Y using the cutter 27 when a predetermined condition is met. This option may be displayed as, for example, "yarn cut" on the machine output unit 5b. When "yarn cut" is selected as the process mode, the machine control device 5 causes the cutter 27 to cut the yarn Y when determining that the remaining amount is reduced, and stops the operation of the spindle 9 through which the yarn Y is traveling. This ends the formation of the winding package Pw (the winding package whose formation is forcibly terminated) on the spindle 9 (formation termination process). In this case, the cutter 27 corresponds to the cutting unit of the present invention. Even when "yarn cut" is selected as the process mode, the machine control device 5 may cause the winding device 19 to perform an inner layer portion avoidance marking operation.

[0096] (2) In the above-described embodiment, the machine control device 5 stores individual information about each winding package Pw in association with information about the judgment made about each winding package Pw (the above-described remaining amount reduction judgment or switching judgment). However, this is not limited to this. The machine control device 5 does not have to store information about the judgment made about each winding package Pw.

[0097] (3) In the above-described embodiments, the machine control device 5 causes the winding device 19 to perform an inner layer portion avoidance marking operation and an inner layer portion-containing marking operation. However, this is not limited to this. Each spindle 9 may be provided with a marking device (marking unit) (not shown) configured to color the yarn Y immediately before it is wound onto the rotating winding bobbin Bw. The marking device may be configured to eject or spray a liquid such as ink toward the yarn Y. The marking device may be configured to, for example, make the ink color applied to the yarn Y wound onto the forced-termination winding package different from the ink color applied to the yarn Y wound onto the inner layer portion-containing winding package so that the formation-forced termination winding package and the inner layer portion-containing winding package can be distinguished from each other by appearance.

[0098] (4) In the above-described embodiments, the machine control device 5 causes the winding device 19 or the marking device to perform both the inner layer portion avoidance marking operation and the inner layer portion inclusion marking operation. However, this is not limited to this. Only one of the inner layer portion avoidance marking operation and the inner layer portion inclusion marking operation may be performed. Alternatively, neither the inner layer portion avoidance marking operation nor the inner layer portion inclusion marking operation may be performed. Even in such cases, it is possible to prevent inferior-quality yarn Y from being mixed into the winding package for forced termination of product formation (e.g., winding package Pw3s).

[0099] (5) In the above-described embodiments, the initial amount information is stored in the machine control device 5 as a common value for all spindles 9 of the false twisting machine 1. However, this is not limited to this. For example, the spindles 9 may be divided into multiple groups. The machine control device 5 may be configured to set initial amount information for each of the multiple groups. Alternatively, the machine control device 5 may be configured to set initial amount information for each spindle 9. In this case, the machine control device 5 may further be configured to acquire initial amount information (or information on the initial value of the remaining time) corresponding to each of the multiple yarn supply packages Ps. More specifically, the machine control device 5 may be configured to acquire initial amount information, etc., for each new yarn supply package Ps each time a new yarn supply package Ps is attached to the yarn supply package holder 20.

[0100] (6) In the above-described embodiments, the operation of replacing the yarn supply package Ps is performed by an operator. However, this is not limited to this. The operation of replacing the yarn supply package Ps may be performed by, for example, a creel robot (not shown). The yarn processing equipment 100 may also include a winding package transport device (not shown) that collects and transports the formed winding package Pw.

[0101] (7) In the above-described embodiments, the yarn detection sensor 24, which includes the first detection unit 25 and the second detection unit 26, detects the start and end of unwinding of the yarn Y from the yarn supply package Ps. However, this is not limited to this. For example, as shown in FIG. 9, the yarn supplying unit 2a of the false twisting machine 1a may include a detection unit 41 in each spindle 9a, which has a configuration different from that of the yarn detection sensor 24. Like the yarn detection sensor 24, the detection unit 41 corresponds to the detection unit of the present invention. The detection unit 41 may include, for example, a supply sensor 42 and a knot portion sensor 43. The supply sensor 42 is configured to detect whether the yarn Y is being supplied from the first attachment unit 22 (start of unwinding). The knot portion sensor 43 is configured to detect a knot portion K that is positioned so as to rest at a predetermined position. In this configuration, when the node K moves from the predetermined position and is no longer detected by the node sensor 43, it can be determined that the yarn supply package has been switched (unwinding has ended). Furthermore, whether the yarn Y is being supplied from the first attachment unit 22 or the second attachment unit 23 at the time of switching the yarn supply package can be determined based on the detection result by the supply sensor 42. In this way, even when the detection result of the node K is used, it is possible to reliably determine whether the yarn Y is being supplied from the first attachment unit 22 or the second attachment unit 23. The node sensor 43 may be configured to be able to detect a moving node K.

[0102] (8) Each yarn supply package holding unit 20 may be configured to hold three or more yarn supply packages Ps. In this case, the ends of the yarn Y included in the three or more yarn supply packages Ps may be appropriately connected to each other.

[0103] Alternatively, as shown in FIG. 10 , the yarn supplying unit 2b of the false twisting machine 1b may have, in each spindle 9b, a yarn supply package holding unit 50 capable of holding only one yarn supply package Ps, instead of the yarn supply package holding unit 20. In this case, the yarn supply package holding unit 50 has only one package attachment unit 21. The yarn supplying unit 2b may have a supply sensor 42. Even in this configuration, the machine control device 5 may store information on "none," "form a winding package containing an inner layer portion," and "yarn cut" as options for the process when the yarn supply package Ps is reduced. When the process mode "form a winding package containing an inner layer portion" is selected, the machine control device 5 may execute a formation termination process and a replacement process when determining whether the remaining amount is reduced. In this case, when the yarn Y contained in the yarn supply package Ps held in the yarn supply package holding unit 50 is depleted, the operation of the spindle 9b having the yarn supply package holding unit 50 is stopped. When the "yarn cut" processing mode is selected, the machine control device 5 may cause the cutter 27 to cut the yarn when it determines that the remaining amount is reduced. In this case, when the cutter 27 cuts the yarn, the operation of the spindle 9b having the cutter 27 is stopped.

[0104] (9) In the above-described embodiment, the machine control device 5 acquires information about the unwinding speed V based on information about the rotation speed of the first feed roller 11. However, this is not limited to this. As another example, the machine control device 5 may store information about the rotation speed of the second feed roller 16 and information about the ratio between the rotation speed of the first feed roller 11 and the rotation speed of the second feed roller 16. The machine control device 5 may acquire information about the unwinding speed based on this information. Alternatively, the machine control device 5 may acquire information about the weight of the yarn Y unwound per unit time from the yarn supply package Ps as unwinding unit amount information, instead of information about the unwinding speed. Such information may be input to the machine control device 5 in advance by, for example, an operator.

[0105] (10) In the above-described embodiments, the machine control device 5 controls each part of the false twisting machine 1 and generates the remaining amount-related information. However, this is not limited to this. For example, the management device 101 may control each part of the false twisting machine 1 and / or generate the remaining amount-related information. In this case, the management device 101 is included in the control unit of the present invention.

[0106] (11) In the above-described embodiment, the information management unit 110 has a plurality of machine control devices 5 and management devices 101, but this is not limited to this. That is, the information management unit 110 may include a computer device (not shown) other than the machine control devices 5 and management devices 101. Alternatively, the information management unit 110 may have only the machine control devices 5 or the management devices 101.

[0107] (12) In the above embodiments, the yarn processing equipment 100 is described as having a plurality of false twisting machines 1, but this is not limited thereto. The yarn processing equipment 100 may be described as having only one false twisting machine 1. Furthermore, the management device 101 may not be provided. Furthermore, the false twisting machine 1 is described as having a plurality of spindles 9, but this is not limited thereto. In other words, the number of spindles 9 provided in the false twisting machine 1 may be one. In other words, the number of yarn supplying package holding units 20 provided in the yarn supplying unit 2 may be one.

[0108] (13) The present invention may be applied to another yarn processing machine instead of the false twisting machine 1. For example, the present invention may be applied to the air processing machine (yarn processing machine) described in Japanese Patent Application Laid-Open No. 2002-088605. [Explanation of symbols]

[0109] 1. False twisting machine (yarn processing machine) 5 Machine control device (control unit) 10 Auto doffer (bobbin replacement, cutting) 19 Winding device (marking section) 20 yarn supply package holder 24 Yarn detection sensor (detection unit) 27 Cutter (cutting part) 32 Traverse device (traverse section) 35 Traverse Guide 36 Motor (guide drive unit) 37 Motor (rotation drive unit) 41 Detection unit Bw Winding bobbin Bw4 Winding bobbin (new winding bobbin) Bw5 Winding bobbin (new winding bobbin) Ps yarn supply package Ps1 yarn supply package (first yarn supply package) Ps2 yarn supply package (second yarn supply package) Pw Winding package Pw3s Winding Package (Forming Forced Termination Winding Package) Pw4r winding package (winding package containing inner layer) Y thread

Claims

1. A yarn processing machine configured to process a yarn unwound from a yarn supply package and wind the yarn around a winding bobbin, a yarn supply package holding section for holding the yarn supply package; a winding device configured to wind the yarn around the winding bobbin to form a winding package; a cutting unit configured to cut the yarn before it is wound onto the winding bobbin; a bobbin replacement unit configured to be able to replace the winding package that has been completed in the winding device with a new winding bobbin as the winding bobbin, and configured to be able to thread a yarn onto the new winding bobbin; a control unit configured to execute at least a formation ending process of controlling the cutting unit to cut the yarn and controlling the winding device to end formation of the winding package, and a replacement process of controlling the bobbin replacement unit to replace the winding package that has been formed with a new winding bobbin and to wind the yarn on the new winding bobbin, The control unit is When it is determined that the amount of yarn contained in the winding package being formed has reached a predetermined target winding amount, the forming end process and the replacement process are performed; generating, by calculation, remaining amount-related information which is numerical information relating to a remaining amount of the yarn remaining in the yarn supply package being unwound and held in the yarn supply package holding unit; a winding package having an amount of yarn smaller than the target winding amount, the winding package being formed by the winding device after the formation termination process is performed when a remaining amount reduction determination is performed to determine that the numerical value of the remaining amount-related information has fallen below a predetermined value, the winding package being formed by the winding device after the formation termination process is performed.

2. The control unit is 2. The yarn processing machine according to claim 1, wherein the individual information of the winding package that has been forcibly terminated and the information regarding the remaining amount reduction determination are stored in association with each other.

3. the yarn supply package holding section is configured to hold, as the yarn supply packages, a first yarn supply package and a second yarn supply package different from the first yarn supply package, and is configured to supply the yarn without interruption when a yarn connection portion is formed by connecting a start end of a yarn included in the first yarn supply package and a terminal end of a yarn included in the second yarn supply package, a detection unit configured to detect information indicating an occurrence of yarn supply package switching in which unwinding of the yarn from the first yarn supply package in the yarn supply package holding unit ends, the yarn connection portion starts to move, and unwinding of the yarn from the second yarn supply package starts, The control unit is when the remaining amount reduction determination is made during unwinding of the yarn from the first yarn supply package, the formation of the formation forced termination winding package is terminated by performing the formation termination process, and after the formation forced termination winding package is formed, the replacement process is performed, and the yarn unwound and processed from the first yarn supply package after the remaining amount reduction determination is wound onto the new winding bobbin attached to the winding device by the replacement process after the formation of the formation forced termination winding package, thereby forming an inner layer portion-containing winding package, which is the winding package having the yarn unwound from the first yarn supply package after the remaining amount reduction determination, in the winding device; The yarn processing machine of claim 1, characterized in that when a switching judgment is made to determine that the yarn supplying package switching has occurred during the formation of the inner layer portion-containing winding package based on the detection result by the detection unit, the formation of the inner layer portion-containing winding package is terminated by performing the formation termination process, and after the inner layer portion-containing winding package is formed, the replacement process is performed, and the yarn unwound and processed from the second yarn supplying package after the switching judgment is wound onto the new winding bobbin attached to the winding device by the replacement process after the inner layer portion-containing winding package is formed.

4. The yarn supply package holding portion is configured to be capable of holding a first yarn supply package and a second yarn supply package other than the first yarn supply package as the yarn supply package, and is configured to be capable of supplying yarn without interruption when a yarn connection portion is formed by connecting a starting end of a yarn contained in the first yarn supply package and a terminal end of a yarn contained in the second yarn supply package, a detection unit configured to detect information indicating an occurrence of yarn supply package switching in which unwinding of the yarn from the first yarn supply package in the yarn supply package holding unit ends, the yarn connection portion starts to move, and unwinding of the yarn from the second yarn supply package starts, The control unit is when the remaining amount reduction determination is made during unwinding of the yarn from the first yarn supply package, the formation of the formation forced termination winding package is terminated by performing the formation termination process, and after the formation forced termination winding package is formed, the replacement process is performed, and the yarn unwound and processed from the first yarn supply package after the remaining amount reduction determination is wound onto the new winding bobbin attached to the winding device by the replacement process after the formation of the formation forced termination winding package, thereby forming an inner layer portion-containing winding package, which is the winding package having the yarn unwound from the first yarn supply package after the remaining amount reduction determination, in the winding device; The yarn processing machine of claim 2, characterized in that when a switching judgment is made to determine that the yarn supplying package switching has occurred during the formation of the inner layer portion-containing winding package based on the detection result by the detection unit, the formation of the inner layer portion-containing winding package is terminated by performing the formation termination process, and after the inner layer portion-containing winding package is formed, the replacement process is performed, and the yarn unwound and processed from the second yarn supplying package after the switching judgment is wound onto the new winding bobbin attached to the winding device by the replacement process after the inner layer portion-containing winding package is formed.

5. The control unit is 4. The yarn processing machine according to claim 3, further comprising: storing information about the individual inner layer portion-containing winding package and information about the switching decision in association with each other.

6. The control unit: The yarn processing machine according to claim 4, characterized in that the individual information of the inner layer portion-containing winding package and the information relating to the switching decision are stored in association with each other.

7. a marking unit configured to perform a marking operation of marking the winding package being formed by the winding device, The control unit is A yarn processing machine as described in any one of claims 3 to 6, characterized in that when the switching judgment is made, the marking unit is controlled to perform an inner layer portion-containing marking operation of applying the mark to the inner layer portion-containing winding package as the marking operation.

8. a marking unit configured to perform a marking operation of marking the winding package being formed by the winding device, The control unit is The yarn processing machine according to any one of claims 1 to 6, characterized in that, when the remaining amount reduction determination is made, the marking unit is controlled to perform an inner layer avoidance marking operation, which places the mark on the formation forced termination winding package, as the marking operation.

9. The control unit is The yarn processing machine according to claim 7, characterized in that, when the remaining amount reduction determination is made, the marking unit is controlled to perform an inner layer avoidance marking operation in which the mark is placed on the formation aborted winding package as the marking operation.

10. The marking unit includes: The marking operation can be performed so as to distinguish the winding package in which the formation has been forcibly terminated from the winding package containing the inner layer portion, The control unit is The yarn processing machine according to claim 9, characterized in that the marking unit is controlled to perform the inner layer portion avoidance marking operation and the inner layer portion containing marking operation so as to distinguish the formation forced termination winding package from the inner layer portion containing winding package.

11. The marking unit includes the winding device, The winding device includes: a rotation drive unit configured to rotate the winding package around a central axis of the winding package; a traverse unit including a traverse guide for traversing a yarn and a guide drive unit configured to be able to drive the traverse guide back and forth along an axial direction of the winding package, The control unit is The yarn processing machine according to claim 7, characterized in that the marking operation is performed by the winding device by controlling the traverse section to stop the traverse guide at a predetermined position in the axial direction while controlling the rotation drive section to rotate the winding package.

12. The marking unit includes the winding device, The winding device includes: a rotation drive unit configured to rotate the winding package around a central axis of the winding package; a traverse unit including a traverse guide for traversing a yarn and a guide drive unit configured to be able to drive the traverse guide back and forth along an axial direction of the winding package, The control unit is The yarn processing machine according to claim 8, characterized in that the marking operation is performed by the winding device by controlling the traverse section to stop the traverse guide at a predetermined position in the axial direction while controlling the rotation drive section to rotate the winding package.

13. The marking unit includes the winding device, The winding device includes: a rotation drive unit configured to rotate the winding package around a central axis of the winding package; a traverse unit including a traverse guide for traversing a yarn and a guide drive unit configured to be able to drive the traverse guide back and forth along an axial direction of the winding package, The control unit is The yarn processing machine according to claim 9, characterized in that the marking operation is performed by the winding device by controlling the traverse section to stop the traverse guide at a predetermined position in the axial direction while controlling the rotation drive section to rotate the winding package.

14. The marking unit includes the winding device, The winding device includes: a rotation drive unit configured to rotate the winding package around a central axis of the winding package; a traverse unit including a traverse guide for traversing a yarn and a guide drive unit configured to be able to drive the traverse guide back and forth along an axial direction of the winding package, The control unit is The yarn processing machine according to claim 10, characterized in that the marking operation is performed by the winding device by controlling the traverse section to stop the traverse guide at a predetermined position in the axial direction while controlling the rotation drive section to rotate the winding package.

Images