Thread processing device

Abstract

In a yarn processing device, the state of each of multiple yarns can be accurately detected, and the device's configuration can be simplified. [Solution] The multiple thread guides 45 of the thread guide unit are conductive or semiconductive at least in the portion that contacts the thread. The electrostatic charge detection circuit 51 outputs a signal corresponding to the voltage value of the voltage generated in the thread guide 45 due to the electrostatic charge generated in the thread guide 45. If the voltage difference Dv, which is the difference between the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 and the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the adjacent thread guide 45, is less than or equal to the threshold Dva (S102:YES), the control unit 52 outputs a first signal indicating that the state of the thread in the thread guide 45 is in a predetermined state (S103). If the voltage difference Dv is greater than the threshold Dva (S102:NO), the control unit 52 outputs a second signal indicating that the state of the thread in the thread guide 45 is not in a predetermined state (S104).

Description

Technical Field

[0001] The present invention relates to a yarn processing apparatus.

Background Art

[0002] Patent Document 1 describes that yarn monitoring devices for detecting changes in yarn thickness and foreign substances such as colored yarns are provided in a plurality of winder units constituting an automatic winder, respectively. The yarn monitoring device of Patent Document 1 includes a light projecting unit that projects light onto a yarn passage, two reflected light receiving units that receive light projected from the light projecting unit and reflected by the yarn traveling in the yarn passage, and one transmitted light receiving unit that receives light transmitted through the yarn traveling in the yarn passage from the light projecting unit. That is, in Patent Document 1, the state of the yarn is detected by an optical sensor.

[0003] Patent Document 2 describes that a plurality of current collectors are provided individually for a plurality of traveling yarns. Each current collector is in contact with the yarn and detects static electricity generated by the contact with the traveling yarn. And in Patent Document 2, yarn breakage is detected based on the static electricity detected by each current collector.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In Patent Document 2, multiple dedicated current collectors are provided individually for multiple threads, which increases the number of parts due to the provision of multiple current collectors. Furthermore, Patent Document 2 requires space to be allocated within the device to accommodate the multiple current collectors. For these reasons, the configuration of the device in Patent Document 2 can become complex.

[0007] The objective of the present invention is to provide a yarn processing device that can accurately detect the state of each of multiple yarns and has a simple configuration. [Means for solving the problem]

[0008] The yarn processing apparatus according to the first invention comprises: a common roller on which a plurality of running yarns are hung in a line; a plurality of yarn guides individually provided for the plurality of yarns, in contact with the corresponding yarn, and arranged in a line upstream or downstream of the common roller in the direction in which the plurality of yarns are running, and at least the contact portion with the yarn is conductive or semiconducting; an electrostatic amount detection unit for detecting the amount of electrostatic charge generated in the plurality of yarn guides; and a control unit that outputs a yarn state signal indicating the state of the yarn in each yarn guide based on the amount of electrostatic charge in the plurality of yarn guides detected by the electrostatic amount detection unit, wherein the control unit outputs the yarn state signal based on the difference between the amount of electrostatic charge in each yarn guide detected by the electrostatic amount detection unit and the amount of electrostatic charge in another yarn guide.

[0009] According to the present invention, the control unit outputs a thread status signal indicating the state of the thread in each thread guide based on the difference between the amount of static electricity generated in one thread guide and the amount of static electricity generated in another thread guide. This makes it possible to detect the state of the thread in each thread guide based on the thread status signal.

[0010] In a yarn processing device equipped with a common roller shared by multiple yarns, the spacing between the multiple yarns placed on the common roller is usually kept as small as possible to minimize the axial length of the common roller. In this case, the spacing between the multiple yarn guides, which are arranged in a single line upstream or downstream of the common roller in the direction in which the multiple yarns travel, is small. Therefore, unlike the present invention, when detecting the state of the yarn using an optical sensor, it may not be possible to accurately detect the state of each yarn at the location where the multiple yarn guides are arranged, for example, by mistakenly detecting the state of an adjacent yarn. Furthermore, it may be difficult to secure space to individually place optical sensors for multiple yarn guides that are arranged at small intervals.

[0011] In this invention, a yarn state signal is output based on the difference between the amount of static electricity detected in each yarn guide and the amount of static electricity detected in another yarn guide, as detected by the electrostatic charge detection unit. This makes it possible to accurately detect the state of the yarn in each of multiple yarn guides arranged at small intervals.

[0012] Furthermore, unlike the present invention, if a separate dedicated contact member is provided to generate static electricity upon contact with the yarn, and the amount of static electricity generated on the contact member is detected, the number of parts increases, and space for the contact member must be secured, making the configuration of the yarn processing device more complex. In contrast, in the present invention, in a yarn processing device equipped with multiple yarn guides, the state of the yarn in each yarn guide can be detected based on the difference between the amount of static electricity detected in each yarn guide and the amount of static electricity detected in another yarn guide, as detected by the static electricity detection unit. Therefore, the configuration of the yarn processing device can be simplified compared to the case in which a separate dedicated contact member is provided.

[0013] The yarn processing apparatus according to the second invention is the yarn processing apparatus according to the first invention, wherein the control unit outputs the yarn state signal based on the difference between the amount of static electricity in each yarn guide detected by the electrostatic amount detection unit and the amount of static electricity in the yarn guide adjacent to that yarn guide.

[0014] When the state of the threads in multiple thread guides is the same, the difference in the amount of static electricity in each thread guide is likely to be the smallest compared to the amount of static electricity in the adjacent thread guide. When the state of the threads in a particular thread guide changes, the difference in the amount of static electricity in that thread guide compared to the amount of static electricity in the adjacent thread guide is likely to increase. Therefore, in this invention, the control unit outputs a thread state signal based on the difference between the amount of static electricity in each thread guide and the amount of static electricity in the adjacent thread guide. This makes it possible to detect the state of the threads in each of the multiple thread guides based on the thread state signal.

[0015] The yarn processing apparatus according to the third invention is a yarn processing apparatus according to the first or second invention, wherein the electrostatic quantity detection unit detects the amount of electrostatic charge by detecting the voltage or current generated by the electrostatic charge generated in the yarn guide, and the control unit outputs the yarn state signal based on the difference between the voltage or current in each yarn guide detected by the electrostatic quantity detection unit and the voltage or current in another yarn guide.

[0016] According to the present invention, the amount of static electricity generated in each thread guide is detected by detecting the voltage or current generated by the static electricity generated in each thread guide. Based on the difference between the voltage or current generated by the static electricity in one thread guide and the voltage or current generated by the static electricity in another thread guide, the control unit outputs a thread status signal. This makes it possible to detect the state of the thread in each of the multiple thread guides based on the thread status signal.

[0017] The yarn processing apparatus according to the fourth invention is a yarn processing apparatus according to any of the first to third inventions, comprising: a plurality of entanglement parts individually provided for the plurality of yarns and for imparting twist to the yarns; a plurality of upstream support guides as the plurality of yarn guides, individually provided for the plurality of yarns and for supporting the yarns upstream of the plurality of entanglement parts in the direction of travel of the plurality of yarns; and a plurality of downstream support guides as the plurality of yarn guides, individually provided for the plurality of yarns and for supporting the yarns downstream of the plurality of entanglement parts in the direction of travel of the plurality of yarns, wherein the electrostatic amount detection unit detects at least one of the electrostatic amount of electrostatics generated in the plurality of upstream support guides and the electrostatic amount of electrostatics generated in the plurality of upstream support guides as the electrostatic amount of electrostatics generated in the plurality of yarn guides.

[0018] Typically, the spacing between multiple entangled sections is small, and correspondingly, the spacing between multiple upstream support guides, and the spacing between multiple upstream support guides, is also small. In this invention, the amount of static electricity generated in multiple thread guides is detected as the amount of static electricity generated in multiple upstream support guides, and at least one of the amount of static electricity generated in multiple upstream support guides is detected. The control unit then outputs a thread state signal based on at least one of the difference between the amount of static electricity in each upstream support guide and the amount of static electricity in another upstream support guide, and the difference between the amount of static electricity in each downstream support guide and the amount of static electricity in another downstream support guide. As a result, the state of the thread in each of the multiple thread guides can be detected based on the thread state signal.

[0019] The yarn processing device according to the fifth invention is a yarn processing device according to any of the first to fourth inventions, and includes an insulating part that has insulating properties and insulates adjacent conductive or semiconductive parts of the yarn guide from each other.

[0020] According to the present invention, since the conductive or semiconductive portions of adjacent yarn guides are insulated from each other by an insulating portion, static electricity generated by contact between each yarn guide and the yarn can be prevented from affecting static electricity generated by contact between an adjacent yarn guide and the yarn.

[0021] The yarn processing apparatus according to the sixth invention is the yarn processing apparatus according to the fifth invention, wherein the entire yarn guide has conductivity or semiconduction, and the insulating portion is disposed between adjacent yarn guides.

[0022] According to the present invention, when the entire yarn guide has conductivity or semiconduction, the insulating portions disposed between adjacent yarn guides can insulate the yarn guides from each other.

[0023] The yarn processing apparatus according to the seventh invention is the yarn processing apparatus according to the fifth invention, wherein the yarn guide includes a contact portion with the yarn, and has a first yarn guide portion having conductivity or semiconduction and a second yarn guide portion as the insulating portion covering the first yarn guide portion.

[0024] According to the present invention, the conductive or semiconductive first yarn guide portions of adjacent yarn guides can be insulated from each other by the insulating second yarn guide portions.

[0025] The yarn processing apparatus according to the eighth invention is the yarn processing apparatus according to any one of the first to sixth inventions, and includes a support member having conductivity and supporting the plurality of yarn guides, wherein the support member and each yarn guide are insulated from each other.

[0026] In the present invention, since the yarn guide having conductivity or semiconduction is insulated from the support member having conductivity, when static electricity is generated in the yarn guide, current does not flow from the yarn guide to the support member. As a result, the amount of static electricity generated in the yarn guide due to contact between the yarn and the yarn guide increases, and it becomes easy to detect the state of the yarn based on the difference in the amount of static electricity generated in the plurality of yarn guides.

[0027] The yarn processing apparatus according to the ninth invention is a yarn processing apparatus according to any of the first to fourth inventions, wherein the plurality of yarn guides are semiconductive and conductive, and a support member supports the plurality of yarn guides, and each yarn guide and the support member are electrically connected.

[0028] From the viewpoint of detecting the state of the yarn based on the difference between the amount of static electricity in one yarn guide and the amount of static electricity in another yarn guide, it is preferable that the amount of static electricity generated in the yarn guide by contact with the yarn is large. On the other hand, considering the effect of the static electricity generated in the yarn guide on the yarn, it is preferable that the amount of static electricity generated in the yarn guide is not too large.

[0029] In this invention, a semiconducting thread guide is electrically connected to a conductive support member. As a result, when static electricity is generated in the thread guide, a current flows from the thread guide to the support member. Therefore, the amount of static electricity generated in the thread guide can be prevented from becoming too large. On the other hand, because the thread guide is semiconducting, current does not flow as easily from the thread guide to the support member compared to when the thread guide is conductive. Therefore, the amount of static electricity generated in the thread guide due to contact between the thread and the thread guide does not become too small, and the state of the thread in each thread guide can be detected based on the difference between the amount of static electricity generated in each thread guide and the amount of static electricity generated in another thread guide. [Effects of the Invention]

[0030] According to the present invention, the control unit outputs a yarn status signal based on the difference between the amount of static electricity generated in one yarn guide and the amount of static electricity generated in another yarn guide. This makes it possible to accurately detect the state of the yarn in each of the multiple yarn guides arranged at small intervals based on the yarn status signal. Furthermore, the configuration of the yarn processing device can be simplified compared to the case where a separate dedicated contact member is provided to detect the amount of static electricity by contacting the moving yarn. [Brief explanation of the drawing]

[0031] [Figure 1] This is a schematic diagram of multiple lubrication guides and a stretching section of a spinning and winding machine according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of the take-up section and winding section of a spinning and winding machine according to an embodiment of the present invention. [Figure 3] This is a cross-sectional view of the thread guide unit in this embodiment, perpendicular to the direction in which the thread travels. [Figure 4] (a) is a block diagram showing the electrical connection relationship of the thread guide, electrostatic quantity detection circuit and control unit according to an embodiment of the present invention, and (b) is a flowchart showing the processing flow for outputting a thread state signal according to an embodiment of the present invention. [Figure 5] This flowchart shows the processing flow for outputting the thread state signal in Modification Example 1. [Figure 6] This is a cross-sectional view of the thread guide unit in modified example 2, perpendicular to the direction in which the thread runs. [Figure 7] This is a cross-sectional view of the thread guide unit in modified example 3, perpendicular to the direction in which the thread runs. [Modes for carrying out the invention]

[0032] Preferred embodiments of the present invention will be described below.

[0033] <Outline configuration of a spinning and winding machine> As shown in Figures 1 and 2, the spinning and winding machine 1 (the "yarn processing device" of the present invention) according to this embodiment includes a plurality of lubrication guides 10, a stretching section 3, a take-up section 4, and a winding section 5. In the following explanation, the vertical direction, the front-back direction, and the left-right direction will be defined and described as shown in Figures 1 and 2. The vertical direction is the direction in which gravity acts. The front-back direction, the left-right direction, and the vertical direction are orthogonal to each other. Furthermore, in the following explanation, the upper and lower sides in the vertical direction, the right and left sides in the left-right direction, and the front and rear sides in the front-back direction will be defined and described as shown in Figures 1 and 2.

[0034] <Refueling Guide> As shown in Figure 1, the spinning unit 2 is located above the spinning reel 1. The spinning unit 2 has a plurality of spinning units 2A arranged in a single row in the left-right direction. Each spinning unit 2A spins a plurality of filaments F made of a molten fiber material such as polyester to form a single thread Y.

[0035] Multiple lubrication guides 10 are provided individually for multiple spinning units 2A. That is, each lubrication guide 10 is provided for a single yarn Y composed of multiple filaments F spun from the corresponding spinning unit 2A. The multiple lubrication guides 10 are arranged in a single row in the left-right direction. The lubrication guides 10 bundle the multiple filaments F spun from the corresponding spinning unit 2A to form a single yarn Y and apply the lubricant to the yarn Y.

[0036] <Extension part> The extension section 3 is positioned below the multiple lubrication guides 10. The extension section 3 is equipped with five godet rollers 11a to 11e. The five godet rollers 11a to 11e are rollers whose axial direction is parallel to the front-rear direction and are each rotationally driven by a motor (not shown). Each of the five godet rollers 11a to 11e also has a heater (not shown) inside. The five godet rollers 11a to 11e are housed in a rectangular parallelepiped-shaped insulated box 12. On the right side wall of the insulated box 12, there is a yarn inlet 12a for introducing multiple yarns Y into the insulated box 12 and a yarn outlet 12b for leading the multiple yarns Y from inside the insulated box 12 to the outside.

[0037] Multiple threads Y coated with oil in multiple oiling guides 10 are aligned in a single row by multiple thread guides 45 in thread guide units 9A and 9B, and guided into the insulated box 12 from the thread inlet 12a by guide rollers 13.

[0038] More specifically, the thread guide unit 9A is positioned below the plurality of lubrication guides 10. The thread guide unit 9A has a plurality of thread guides 45 arranged in a single row in the left-right direction. The plurality of thread guides 45 of the thread guide unit 9A are individually provided for the plurality of threads Y. The plurality of threads Y, to which the lubricant has been applied in the plurality of lubrication guides 10, are aligned in a single row in the left-right direction by the plurality of thread guides 45 of the thread guide unit 9A.

[0039] The thread guide unit 9B is positioned below the thread guide unit 9A. The thread guide unit 9B has a plurality of thread guides 45 arranged in a single row in the front-to-back direction. The plurality of thread guides 45 of the thread guide unit 9B are individually provided for a plurality of threads Y. The orientation of the plurality of threads Y is changed between the thread guide unit 9A and the thread guide unit 9B, and they are aligned in a single row in the front-to-back direction by the plurality of thread guides 45 of the thread guide unit 9B.

[0040] The guide roller 13 is a roller whose axial direction is parallel to the front-rear direction and is located below the yarn guide unit 9B. Multiple yarns Y, which are aligned in a single row in the front-rear direction by the multiple yarn guides 45 of the yarn guide unit 9B, are conveyed by the guide roller 13 and introduced into the insulated box 12 from the yarn inlet 12a. The multiple yarns Y introduced into the insulated box 12 are then wound sequentially onto five godette rollers 11a to 11e.

[0041] The three upstream godet rollers 11a to 11c are heating rollers used to preheat multiple yarns Y before stretching. The surface temperature of the godet rollers 11a to 11c is set to a temperature above the glass transition temperature of the yarn Y. Multiple yarns Y introduced into the insulated box 12 from the yarn inlet 12a are preheated to a stretchable temperature, i.e., a temperature above the glass transition temperature, while being fed by the three upstream godet rollers 11a to 11c.

[0042] The two downstream godet rollers 11d and 11e are heating rollers for heat-setting the multiple stretched yarns Y. The surface temperature of the godet rollers 11d and 11e is set to a higher temperature than the surface temperature of the three upstream godet rollers 11a to 11c. Also, the surface velocity of the two downstream godet rollers 11d and 11e is faster than the surface velocity of the three upstream godet rollers 11a to 11c.

[0043] Then, the multiple yarns Y, preheated by the godet rollers 11a to 11c, are stretched by the difference in surface velocity between the godet roller 11c and the godet roller 11d. Furthermore, the multiple yarns Y are heated to a higher temperature as they are fed by the two downstream godet rollers 11d and 11e, and the stretched state is heat-set. The multiple yarns Y stretched in this manner are led out of the insulated box 12 from the yarn outlet 12b. The multiple yarns Y led out of the insulated box 12 from the yarn outlet 12b are fed towards the take-up section 4 by the guide roller 14.

[0044] Multiple entanglement guides 8 and thread guide units 9C and 9D are arranged in the thread path between the thread outlet 12b and the guide roller 14. The multiple entanglement guides 8 are individually provided for multiple threads Y and are arranged in a single row in the front-to-back direction. The entanglement guides 8 impart entanglement to the threads Y. Since the configuration of the entanglement guides 8 is known, further detailed explanation is omitted here. In this embodiment, the entanglement guides 8 correspond to the "entanglement portion" of the present invention.

[0045] The thread guide unit 9C is positioned in the thread path immediately upstream of the multiple entanglement guides 8. The thread guide unit 9D is positioned in the thread path immediately downstream of the multiple entanglement guides 8. Each of the thread guide units 9C and 9D has multiple thread guides 45 arranged in a single row in the front-to-back direction at approximately the same interval as the multiple entanglement guides 8. The multiple thread guides 45 of the thread guide units 9C and 9D are individually provided for each of the multiple threads Y. The multiple threads Y are aligned in a single row in the front-to-back direction by the multiple thread guides 45 of the thread guide unit 9C and the multiple thread guides 45 of the thread guide unit 9D. Furthermore, the multiple thread guides 45 of the thread guide units 9C and 9D support the portions of the multiple threads Y located upstream and downstream of the portions to which entanglement is applied by the multiple entanglement guides 8. In this embodiment, the multiple thread guides 45 of the thread guide unit 9C correspond to the "upstream support guides" of the present invention, and the multiple thread guides 45 of the thread guide unit 9D correspond to the "downstream support guides" of the present invention.

[0046] The guide roller 14 is a roller whose axial direction is parallel to the front-rear direction and is positioned in the thread path immediately downstream of the thread guide unit 9D. Multiple threads Y aligned in the front-rear direction by multiple thread guides 45 of the thread guide unit 9D are sent to the take-up section 4 by the guide roller 14.

[0047] <Collection Department> As shown in Figure 2, the take-up section 4 includes a godet roller 21 and a godet roller 22.

[0048] The godet roller 21 is a roller whose axial direction is parallel to the left-right direction and is located below the guide roller 14. A yarn guide unit 9E is positioned in the yarn path immediately upstream of the godet roller 21, between the guide roller 14 and the godet roller 21 in the vertical direction. The yarn guide unit 9E has a plurality of yarn guides 45 arranged in a single row in the left-right direction. The plurality of yarn guides 45 of the yarn guide unit 9E are individually provided for a plurality of yarns Y. The orientation of the plurality of yarns Y is changed between the guide roller 14 and the yarn guide unit 9E, and they are aligned in a single row in the left-right direction by the plurality of yarn guides 45 of the yarn guide unit 9E before being taken up by the godet roller 21. The godet roller 21 is rotationally driven by a motor (not shown) and feeds the plurality of yarns Y, which have been aligned in the left-right direction by the plurality of yarn guides 45 of the yarn guide unit 9E, toward the godet roller 22.

[0049] The godet roller 22 is a roller whose axial direction is parallel to the left-right direction and is positioned behind the godet roller 21. A thread guide unit 9F is positioned in the thread path immediately upstream of the godet roller 22. The thread guide unit 9F has multiple thread guides 45 arranged in a single row in the left-right direction. Each thread guide unit 9F is individually provided for multiple threads Y. The multiple threads Y are aligned in a single row in the left-right direction by the multiple thread guides 45 of the thread guide unit 9F. The godet roller 22 is rotationally driven by a motor (not shown) and feeds the multiple threads Y, which are aligned in the left-right direction by the multiple thread guides 45 of the thread guide unit 9F, toward the winding unit 5.

[0050] Furthermore, the take-up section 4 is equipped with a guide rail 23 that extends upward in the vertical direction as it moves towards the rear in the front-rear direction. The godet roller 22 and the thread guide unit 9F are attached to a slider 24 that is movable along the guide rail 23. The slider 24 is connected to a motor (not shown) via pulleys, belts, etc. (not shown). When this motor is driven, the slider 24 moves along the guide rail 23. This allows the godet roller 22 and the thread guide unit 9F to move between the rear position when winding the thread Y, shown by the solid line in Figure 2, and the front position close to the godet roller 21 when threading, shown by the dashed line in Figure 2.

[0051] <Winding section> The winding unit 5 comprises a plurality of traverse devices 30, a turret 71, two bobbin holders 72, and a contact roller 73. The plurality of traverse devices 30 are individually provided for a plurality of threads Y and are arranged in the front-to-back direction. Each traverse device 30 has a pivot guide 61 and a traverse guide 62.

[0052] Multiple pivot guides 61 of multiple traverse devices 30 are arranged in a single row in the front-to-back direction. Multiple pivot guides 61 of multiple traverse devices 39 are attached to multiple individual sliders 67. Multiple sliders 67 are supported so as to be movable in the front-to-back direction along a guide rail 68 that extends in the front-to-back direction. Multiple sliders 67 are also connected to a cylinder (not shown). When the cylinder is driven, multiple sliders 67 move in the front-to-back direction along the guide rail 68. This makes it possible to move the multiple pivot guides 61 between positions that are far apart from each other in the front-to-back direction when winding the thread Y, and a position that is brought closer to the front when threading.

[0053] As shown in Figure 2, the multiple traverse guides 62 of the multiple traverse devices 30 are positioned downstream of the corresponding pivot guides 61 in the direction of the thread Y's movement and are arranged in a single row in the front-to-back direction. The traverse guides 62 are driven by a motor (not shown) to cause the thread Y to swing back and forth around the pivot guides 61.

[0054] The turret 71 is a disc-shaped member whose axial direction is parallel to the front-rear direction. The turret 71 is rotationally driven by a motor (not shown). The two bobbin holders 72 each have their axial directions parallel to the front-rear direction and are rotatably supported at the upper and lower ends of the turret 71. Multiple bobbins B, each individually provided for multiple threads Y, are mounted in a row in the front-rear direction on each bobbin holder 72. The two bobbin holders 72 are also rotationally driven individually by motors (not shown).

[0055] Then, when the upper bobbin holder 72 is rotated, the yarn Y, which has been traversed by the traverse device 30, is wound onto the bobbin B to form the package P. After the formation of the package P is complete, the turret 71 is rotated to swap the upper and lower positions of the two bobbin holders 72. As a result, the bobbin holder 72 that was previously in the lower position moves to the upper position, and the yarn Y can be wound onto the bobbin B attached to this bobbin holder 72 to form the package P. Also, the bobbin holder 72 that was previously in the upper position moves to the lower position, making it possible to retrieve the package P.

[0056] The contact roller 73 is a roller whose axial direction is parallel to the front-rear direction. The contact roller 73 is positioned directly above the upper bobbin holder 72. The contact roller 73 applies contact pressure to the surface of the packages P during winding by contacting the yarn Y on the surface of the packages P on which the yarn Y is wound onto the bobbin B mounted on the upper bobbin holder 72.

[0057] <Thread guide unit> Next, the thread guide units 9A to 9F described above will be explained in detail using Figure 3. Here, thread guide unit 9 in Figure 3 refers to thread guide units 9A to 9F. Also, the thread arrangement direction in Figure 3 is the left-right direction when thread guide unit 9 is thread guide unit 9A, 9E, or 9F, and the front-back direction when thread guide unit 9 is thread guide unit 9B, 9C, or 9D. Also, the orthogonal arrangement direction in Figure 3 is the front-back direction when thread guide unit 9 is thread guide unit 9A, 9E, or 9F, and the up-down direction when thread guide unit 9 is thread guide unit 9B, 9C, or 9D.

[0058] As shown in Figure 3, the yarn guide unit 9 has multiple yarn guides 45 that are individually provided for multiple yarns Y and arranged in a single row in the yarn arrangement direction, as described above. Here, in order to miniaturize the spinning winding machine 1, the spacing between the multiple yarns Y that are hung on the rollers 11a-11d, 13, 14, 21, and 22 is made as small as possible, for example, about 8 mm, thereby making the axial length of the rollers 11a-11d, 13, 14, 21, and 22 as short as possible. Correspondingly, the spacing between the yarn guides 45 in the yarn guide unit 9 is also small, for example, about 8 mm, which is approximately the same as the spacing between the multiple yarns Y that are hung on the rollers 11a-11d, 13, 14, 21, and 22. However, the multiple yarn guides 45 in the yarn guide unit 9 are arranged with gaps between them so that the yarn guides 45 do not directly make electrical contact with each other. In this embodiment, rollers 11a to 11d, 13, 14, 21, and 22 correspond to the "common rollers" of the present invention.

[0059] Furthermore, each thread guide 45 is configured in a substantially U-shape with one end open in the direction orthogonal to the arrangement, allowing the thread Y to be introduced from the end in the direction orthogonal to the arrangement. The thread guide 45 is conductive or semiconductive and comes into contact with the thread Y.

[0060] In this embodiment, having conductivity means, for example, a metal, with a volume resistivity of 10 -8It must be made of a material with a volume resistivity of Ω·cm or less. Furthermore, being semiconductive means, for example, zirconia, which has a volume resistivity of 10 -7 Ω·cm or less and 10 -8 The material must have a capacitance greater than Ω·cm. In both cases, whether the thread guide 45 is conductive or semiconductive, a current flows through the thread guide 45 due to static electricity generated by contact between the running thread Y and the thread guide 45. However, when the thread guide 45 is semiconductive, the magnitude of the current is smaller than when the thread guide 45 is conductive.

[0061] Furthermore, the multiple thread guides 45 of the thread guide unit 9 are supported by a support member 46 that extends in the thread arrangement direction at the other end in the direction orthogonal to the arrangement direction. The support member 46 is conductive. In addition, an insulating member 47 having insulating properties is placed between the multiple thread guides 45 and the support member 46, and each thread guide 45 and the support member 46 are insulated by the insulating member 47. In addition, an insulating member 48 is placed between adjacent thread guides 45 in the thread arrangement direction, and adjacent thread guides 45 are insulated from each other by the insulating member 48. In this embodiment, the insulating member 48 corresponds to the "insulating part" of the present invention. Here, in this embodiment, having insulating properties means, for example, a resin or the like with a volume resistivity of 10 8 It must be made of material with a mass of Ω·cm or greater.

[0062] For convenience, this explanation assumes that thread guide units 9A to 9F all have the same structure, but this is not the case. For example, the shape of the thread guide 45 may differ between thread guide units 9A to 9F.

[0063] <Detection of thread condition in thread guide> In this embodiment, the state of the yarn Y in multiple yarn guides 45 of yarn guide unit 9, which is at least one of yarn guide units 9A to 9F, is detected.

[0064] As shown in Figure 4(a), the spinning and winding machine 1, in addition to the above-described configuration, includes a plurality of electrostatic quantity detection circuits 51 and a control unit 52. The plurality of electrostatic quantity detection circuits 51 are individually provided on a plurality of yarn guides 45 of at least one yarn guide unit 9 among the yarn guide units 9A to 9F, and are electrically connected to the corresponding yarn guides 45. The electrostatic quantity detection circuit 51 detects the voltage generated in the yarn guide 45 due to the static electricity generated in the yarn guide 45 and outputs a signal corresponding to the voltage value. Here, the greater the amount of static electricity generated in the yarn guide 45 by contact with the yarn Y, the greater the voltage value of the voltage generated in the yarn guide 45 due to this static electricity. In this embodiment, the plurality of electrostatic quantity detection circuits 51 combined correspond to the "electrostatic quantity detection unit" of the present invention.

[0065] The control unit 52 outputs a thread state signal for each of the multiple electrostatic quantity detection circuits 51, based on the signal output from the electrostatic quantity detection circuit 51, indicating whether or not the state of the thread Y in the thread guide 45 is in a predetermined state. Here, the state of the thread Y in the thread guide 45 being in a predetermined state means, for example, that the tension of the thread Y in the thread guide 45 is within the normal range, and that the thread Y is not broken near the thread guide 45. Conversely, the state of the thread Y in the thread guide 45 not being in a predetermined state means, for example, that the tension of the thread Y in the thread guide 45 is outside the normal range, and that the thread Y is broken near the thread guide 45.

[0066] In addition, the control unit 52 also controls the operation of a motor (not shown) of the spinning and winding machine 1, but a detailed explanation is omitted here.

[0067] Next, the output of the thread status signal by the control unit 52 will be described in detail. The control unit 52 outputs the thread status signal by processing each of the multiple electrostatic quantity detection circuits 51 according to the flowchart in Figure 4(b). To explain the flowchart in Figure 4(b) in detail, the control unit 52 first calculates the voltage difference Dv, which is the difference between the voltage value output from the electrostatic quantity detection circuit 51 and the voltage value output from the electrostatic quantity detection circuit 51 provided for the adjacent thread guide 45 (S101).

[0068] At this time, for the electrostatic charge detection circuit 51 provided for the outermost thread guide 45 in the thread arrangement direction of the thread guide unit 9, the difference between the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the thread guide 45 and the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the other adjacent thread guide 45 in the thread arrangement direction of the thread guide 45 is calculated as the voltage difference Dv.

[0069] Furthermore, for the electrostatic charge detection circuit 51 provided for the outermost thread guide 45 in the thread arrangement direction of the thread guide unit 9, the difference between the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the thread guide 45 and the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the adjacent thread guide 45 on the one side in the thread arrangement direction of the thread guide 45 is calculated as the voltage difference Dv.

[0070] Furthermore, for the electrostatic charge detection circuits 51 provided on thread guides 45 other than the outermost thread guide 45 and the outermost thread guide 45 in the thread arrangement direction of the thread guide unit 9, the difference between the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided on the thread guide 45 and the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided on the adjacent thread guide 45 on one or the other side in the thread arrangement direction of the thread guide 45 is calculated as the voltage difference Dv. Alternatively, for example, the average value of the difference between the voltage value output from the electrostatic charge detection circuit 51 provided on the thread guide 45 and the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided on the adjacent thread guide 45 on one side in the thread arrangement direction of the thread guide 45, and the difference between the voltage value indicated by the signal output from the electrostatic charge detection circuit 51 provided on the adjacent thread guide 45 on the other side in the thread arrangement direction of the thread guide 45, may be calculated as the voltage difference Dv.

[0071] Next, the control unit 52 determines whether the voltage difference Dv is less than or equal to the threshold Dva (S102). If the voltage difference Dv is less than or equal to the threshold Dva (S102: YES), the control unit 52 outputs a first signal as a thread status signal indicating that the state of thread Y in the thread guide 45 is in a predetermined state (S103). If the voltage difference Dv is greater than the threshold Dva (S102: NO), the control unit 52 outputs a second signal as a thread status signal indicating that the state of thread Y in the thread guide 45 is not in a predetermined state (S104). After the output of the thread status signals in S103 and S104, the process returns to S101.

[0072] <Effects> In this embodiment, the control unit 52 outputs a yarn status signal based on the difference between the amount of static electricity generated in each yarn guide 45 of the yarn guide unit 9 and the amount of static electricity generated in another yarn guide 45 of the same yarn guide unit 9. This makes it possible to detect the state of the yarn Y in the yarn guide 45 based on the yarn status signal.

[0073] In a spinning and winding machine 1 equipped with rollers 11a-11d, 13, 14, 21, and 22 common to multiple yarns Y, the spacing between the multiple yarns Y placed on the rollers 11a-11d, 13, 14, 21, and 22 is usually kept as small as possible from the viewpoint of suppressing the axial lengthening of the rollers 11a-11d, 13, 14, 21, and 22. In this case, the spacing between the multiple yarn guides 45 of the yarn guide units 9A-9F, which are arranged in a single row upstream or downstream of the rollers 11a-11d, 13, 14, 21, and 22 in the direction in which the multiple yarns Y travel, is small. Therefore, unlike the present invention, when detecting the state of yarn Y using an optical sensor, it may not be possible to accurately detect the state of yarn Y, for example, by mistakenly detecting the state of an adjacent yarn Y. Furthermore, in the spinning and winding machine 1, it may be difficult to secure space to individually place optical sensors for multiple yarns that are arranged at small intervals. For example, as mentioned above, multiple thread guides 45 are arranged at intervals of about 8 mm, whereas if one were to try to detect the state of thread Y using a general optical sensor, it would be difficult to arrange them at intervals of 10 mm or less.

[0074] In this embodiment, the state of the yarn Y in each yarn guide 45 is detected based on the difference between the amount of static electricity generated in each yarn guide 45 and the amount of static electricity generated in another yarn guide 45. This makes it possible to accurately detect the state of the yarn Y in each of multiple yarn guides 45 that are arranged at small intervals.

[0075] Furthermore, unlike the present invention, if a dedicated contact member that generates static electricity upon contact with the yarn Y is provided, the number of parts increases, and space for arranging the contact member must be secured, making the configuration of the spinning and winding machine 1 more complex. In contrast, in a spinning and winding machine 1 equipped with a yarn guide unit 9 including multiple yarn guides 45, the state of the yarn Y is detected based on the difference between the amount of static electricity generated in each yarn guide 45 and the amount of static electricity generated in another yarn guide 45. Therefore, the configuration of the spinning and winding machine 1 can be simplified compared to the case in which the above-mentioned dedicated contact member is provided separately.

[0076] Furthermore, when the state of the yarn Y in multiple yarn guides 45 of a single yarn guide unit 9 is the same, the difference in the amount of static electricity in each yarn guide 45 of the yarn guide unit 9 compared to the amount of static electricity in the adjacent yarn guide 45 is likely to be the smallest. When the state of the yarn Y changes in a certain yarn guide 45, the difference in the amount of static electricity in that yarn guide 45 compared to the amount of static electricity in the adjacent yarn guide 45 is likely to increase. Therefore, in this embodiment, the control unit 52 outputs a yarn state signal based on the difference between the amount of static electricity in each yarn guide 45 and the amount of static electricity in the adjacent yarn guide 45. This makes it possible to detect the state of the yarn Y in multiple yarn guides 45 based on the yarn state signal.

[0077] Furthermore, in this embodiment, the amount of static electricity generated in each thread guide 45 of the thread guide unit 9 is detected by detecting the voltage generated in that thread guide 45 due to the static electricity generated in that thread guide 45. Then, a thread status signal is output based on the difference between the voltage generated by the static electricity in one thread guide 45 and the voltage generated by the static electricity in another thread guide 45. This makes it possible to detect the state of the thread Y based on the thread status signal.

[0078] Furthermore, in the spinning winding machine 1, the spacing between the multiple entanglement guides 8 is usually small, and correspondingly, the spacing between the multiple yarn guides 45 of the yarn guide unit 9C located immediately upstream of the entanglement guide 8, and the spacing between the multiple yarn guides 45 of the yarn guide unit 9D located immediately downstream of the entanglement guide 8 are also small.

[0079] Therefore, in this embodiment, the amount of static electricity generated in the multiple thread guides 45 of the thread guide unit 9C is detected, and if the control unit 52 outputs a thread status signal based on the difference in the amount of static electricity generated in the multiple thread guides 45 of the thread guide unit 9C, the state of the thread Y of the multiple thread guides 45 of the thread guide unit 9C can be detected based on the thread status signal.

[0080] Similarly, in this embodiment, the amount of static electricity generated in the multiple thread guides 45 of the thread guide unit 9D is detected, and if the control unit 52 outputs a thread state signal based on the difference in the amount of static electricity generated in the multiple thread guides 45 of the thread guide unit 9D, the state of the thread Y of the multiple thread guides 45 of the thread guide unit 9D can be detected based on the thread state signal.

[0081] Furthermore, in this embodiment, the entire thread guide 45 is conductive or semiconductive, while an insulating member 48 is placed between adjacent thread guides 45. This insulates adjacent thread guides 45 from each other, preventing static electricity generated by contact between each thread guide 45 and the thread Y from affecting the static electricity generated by contact between adjacent thread guides 45 and the thread Y.

[0082] Furthermore, in this embodiment, since the conductive or semiconductive thread guide 45 and the conductive support member 46 are insulated by the insulating member 47, when static electricity is generated in the thread guide 45, no current flows from the thread guide 45 to the support member 46. As a result, the amount of static electricity generated by the contact between the thread Y and the thread guide 45 becomes larger, making it easier to detect the state of the thread Y based on the difference in the amount of static electricity in the thread guide 45.

[0083] <Variation> Although preferred embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the claims.

[0084] In the above-described embodiment, the control unit 52 outputs a thread status signal based on the voltage difference Dv, which is the voltage difference caused by the static electricity generated on the thread guide 45 due to contact between the thread Y and the thread guide 45, but it is not limited to this.

[0085] In Modification 1, the electrostatic charge detection circuit 51 detects the current generated by the static electricity on the thread guide 45 and outputs a signal corresponding to the value of that current. Here, the greater the amount of static electricity generated on the thread guide 45, the greater the value of the current generated by this static electricity.

[0086] The control unit 52 then outputs a thread state signal by processing each of the multiple electrostatic quantity detection circuits 51 according to the flowchart in Figure 5. In more detail, the control unit 52 first calculates the current difference Di, which is the difference between the current value indicated by the signal output from the electrostatic quantity detection circuit 51 and the current value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for the adjacent thread guide 45 (S201).

[0087] At this time, for the electrostatic charge detection circuit 51 provided for the outermost thread guide 45 in the thread arrangement direction of the thread guide unit 9, the difference between the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the thread guide 45 and the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the other adjacent thread guide 45 in the thread arrangement direction of the thread guide 45 is calculated as the current difference Di.

[0088] Furthermore, for the electrostatic charge detection circuit 51 provided for the thread guide 45 furthest to the other thread guide in the thread arrangement direction of the thread guide unit 9, the difference between the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the thread guide 45 and the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the adjacent thread guide 45 on the other side in the thread arrangement direction of the thread guide 45 is calculated as the current difference Di.

[0089] Furthermore, for the electrostatic charge detection circuits 51 provided for thread guides 45 other than the outermost thread guide 45 and the outermost thread guide 45 in the thread arrangement direction of the thread guide unit 9, the difference between the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the thread guide 45 and the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the adjacent thread guide 45 on one or the other side in the thread arrangement direction of the thread guide 45 is calculated as the current difference Di. Alternatively, for example, the average value of the difference between the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the thread guide 45 and the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the adjacent thread guide 45 on one side in the thread arrangement direction of the thread guide 45, and the difference between the current value indicated by the signal output from the electrostatic charge detection circuit 51 provided for the adjacent thread guide 45 on the other side in the thread arrangement direction of the thread guide 45 may be calculated as the current difference Di.

[0090] Next, the control unit 52 determines whether the current difference Di is less than the threshold Dia (S202). If the current difference Di is less than the threshold Dia (S202: YES), the control unit 52 outputs a first signal as the thread status signal (S203). If the current difference Di is greater than or equal to the threshold Dia (S202: NO), the control unit 52 outputs a second signal as the thread status signal (S204). After the output of the thread status signals in S203 and S204, the process returns to S201.

[0091] In Modification 1, the amount of static electricity generated in each thread guide 45 is detected by detecting the current generated in each thread guide 45 due to the static electricity generated in each thread guide 45 of the thread guide unit 9. Based on the difference between the current generated by the static electricity in one thread guide 45 and the current generated by the static electricity in another thread guide 45, the control unit 52 outputs a thread status signal. This makes it possible to detect the state of the thread Y in multiple thread guides 45 based on the thread status signal.

[0092] Furthermore, in the above-described embodiment, the voltage difference Dv was calculated as the difference between the voltage value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for each thread guide 45 and the voltage value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for the thread guide 45 adjacent to the thread guide 45. However, the embodiment is not limited to this. The voltage difference Dv may also be calculated as the difference between the voltage value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for each thread guide 45 and the voltage value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for thread guides 45 other than the thread guide 45 adjacent to the thread guide 45.

[0093] Furthermore, in Modification 1, the difference between the current value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for each thread guide 45 and the current value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for the thread guide 45 adjacent to the thread guide 45 was calculated as the current difference Di, but this is not the only way. The difference between the current value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for each thread guide 45 and the current value indicated by the signal output from the electrostatic quantity detection circuit 51 provided for thread guides 45 other than the thread guide 45 adjacent to the thread guide 45 may also be calculated as the current difference Di.

[0094] Furthermore, in the above-described embodiment, the multiple thread guides 45 are conductive or semiconductive, and the support member 46 that supports the multiple thread guides 45 is conductive, while each thread guide 45 and the support member 46 are insulated by an insulating member 47. However, the embodiment is not limited to this.

[0095] In Modification 2, each of the thread guides 45 of the thread guide unit 9 is semiconductive. On the other hand, the support member 46 is conductive, as in the embodiment described above. In Modification 2, as shown in Figure 6, there is no insulating member 47 (see Figure 3) between each thread guide 45 and the support member 46, and each thread guide 45 is in direct contact with the support member 46, thus providing electrical conductivity between each thread guide 45 and the support member 46.

[0096] Here, from the viewpoint of detecting the state of the yarn Y based on the difference between the amount of static electricity in one yarn guide 45 and the amount of static electricity in another yarn guide 45, it is preferable that the amount of static electricity generated in the yarn guide 45 by contact with the yarn Y is large. On the other hand, considering the effect of the static electricity generated in the yarn guide 45 on the yarn Y, it is preferable that the amount of static electricity generated in the yarn guide 45 is not too large.

[0097] In the modified example 2, the semiconducting thread guide 45 is electrically connected to the conductive support member 46. This prevents the amount of static electricity generated in the thread guide 45 from becoming too large when static electricity is generated in the thread guide 45, as current flows from the thread guide 45 to the support member 46. On the other hand, because the thread guide 45 is semiconducting, current does not flow as easily from the thread guide 45 to the support member 46 compared to the case where the thread guide 45 is conductive. Therefore, the amount of static electricity generated in the thread guide 45 due to contact between the thread Y and the thread guide 45 does not become too small, and the state of the thread Y in multiple thread guides 45 can be detected based on the difference in the amount of static electricity generated in multiple thread guides 45.

[0098] Furthermore, in the above examples, the entire thread guide 45 was conductive or semiconductive, but this is not limited to this. The thread guide 45 may be conductive or semiconductive only in a portion including the part that contacts the thread Y. Even in this case, the electrostatic charge detection circuit 51 can output a signal corresponding to the amount of electrostatic charge generated in the thread guide 45 due to contact with the thread Y.

[0099] For example, in Modification 3, as shown in Figure 7, the thread guide 45 has a first thread guide portion 45a and a second thread guide portion 45b. The first thread guide portion 45a is conductive or semiconductive and forms a part of the thread guide 45 that includes the portion in contact with the thread Y. The second thread guide portion 45b is insulating and covers the first thread guide portion 45a. As a result, the first thread guide portions 45a of adjacent thread guides 45 in the thread guide unit 9 are insulated from each other by the second thread guide portion 45b. In Modification 3, the second thread guide portion 45b corresponds to the "insulating portion" of the present invention. Also, in Figure 7, adjacent thread guides 45 are arranged far apart, but the second thread guide portions 45b of adjacent thread guides 45 may be in contact with each other.

[0100] In the modified example 3, the support member 46 is insulating. The first thread guide portion 45a is drawn out from the support member 46 on the side opposite to the thread guide 45 in the direction orthogonal to the arrangement and is connected to the electrostatic charge detection circuit 51 (see Figure 4(a)).

[0101] In the modified example 3, the conductive or semiconductive first thread guide portions 45a of adjacent thread guides 45 can be insulated from each other by the insulating second thread guide portion 45b. This prevents static electricity generated by contact between each thread guide 45 and the thread Y from affecting static electricity generated by contact between adjacent thread guides 45 and the thread Y.

[0102] Furthermore, if only a portion of the thread guide 45, including the portion that contacts the thread Y, is conductive or semiconductive, the aforementioned portion of the thread guide 45 and the support member 46 may be insulated from each other. Alternatively, if only a portion of the thread guide 45, including the portion that contacts the thread Y, is semiconductive, the aforementioned portion of the thread guide 45 and the support member 46 may be electrically conductive.

[0103] Furthermore, the conductive or semiconductive portions of adjacent thread guides may be insulated from each other by an insulating portion with a configuration different from that described in the above embodiment and modified example 3.

[0104] Furthermore, in the above example, multiple thread guides 45 were supported by a common support member 46, but multiple thread guides 45 may be supported by individual support members. Alternatively, two or more of the multiple thread guides 45 may be supported by a common support member. Also, in the above example, the support member supporting the thread guides 45 was conductive, but the support member may be insulating.

[0105] Furthermore, the above examples illustrate the application of the present invention to a spinning and winding machine having a common roller common to multiple yarns and multiple yarn guides arranged in a single row upstream or downstream of the common roller in the direction of yarn travel, but the invention is not limited to this. The present invention can also be applied to yarn processing equipment other than spinning and winding machines that have a common roller common to multiple yarns and multiple yarn guides arranged in a single row upstream or downstream of the common roller in the direction of yarn travel. [Explanation of Symbols]

[0106] 1: Spinning and winding machine (yarn processing device) 8: Confounding Guide (Confounding Area) 9, 9A~9F: Thread guide unit 45: Thread guide 45a: 1st part 45b: Second part (insulating part) 46: Support member 47: Insulating member 48: Insulating material (insulating part) 51: Electrostatic charge detection circuit (electrostatic charge detection part) 52: Control Unit

Claims

1. A common roller common to the multiple threads is used, on which multiple threads are hung in a line, A plurality of thread guides are individually provided on the plurality of threads, in contact with the corresponding thread, arranged in a row upstream or downstream of the common roller in the direction in which the plurality of threads travel, and at least the portion in contact with the threads is conductive or semiconductive; A static electricity amount detection unit for detecting the amount of static electricity generated in the plurality of thread guides, The system comprises a control unit that outputs a thread state signal indicating the state of the thread in each thread guide based on the amount of static electricity in the plurality of thread guides detected by the static electricity amount detection unit, The control unit, A yarn processing device characterized in that it outputs a yarn state signal based on the difference between the amount of static electricity in each yarn guide detected by the static electricity amount detection unit and the amount of static electricity in another yarn guide.

2. The control unit, The yarn processing apparatus according to claim 1, characterized in that it outputs a yarn state signal based on the difference between the amount of static electricity in each yarn guide detected by the static electricity amount detection unit and the amount of static electricity in the adjacent yarn guide.

3. The electrostatic charge detection unit detects the amount of electrostatic charge by detecting the voltage or current generated by the electrostatic charge generated on the thread guide. The control unit, The yarn processing apparatus according to claim 1 or 2, characterized in that it outputs a yarn state signal based on the difference between the voltage or current at each yarn guide detected by the electrostatic quantity detection unit and the voltage or current at a yarn guide other than the yarn guide in that yarn guide.

4. A plurality of interlocking portions are provided individually for each of the plurality of threads, which impart twist to the threads, A plurality of upstream support guides, which serve as the plurality of thread guides, are individually provided for the plurality of threads and support the threads upstream of the plurality of entanglements in the direction in which the plurality of threads travel. The system comprises a plurality of downstream support guides, which are individually provided for the plurality of threads and support the threads downstream of the plurality of entanglements in the direction in which the plurality of threads travel, and which serve as the plurality of thread guides. The electrostatic quantity detection unit is The yarn processing apparatus according to any one of claims 1 to 3, characterized in that it detects at least one of the amount of static electricity generated in the plurality of upstream support guides and the amount of static electricity generated in the plurality of upstream support guides as the amount of static electricity generated in the plurality of yarn guides.

5. The yarn processing apparatus according to any one of claims 1 to 4, further comprising an insulating portion that has insulating properties and insulates adjacent conductive or semiconductive portions of the yarn guide from each other.

6. The entire thread guide is conductive or semiconductive. The yarn processing apparatus according to claim 5, characterized in that the insulating portion is arranged between adjacent yarn guides.

7. The aforementioned thread guide is A first thread guide portion, which includes a contact portion with the aforementioned thread and is conductive or semiconductive, The yarn processing apparatus according to claim 5, further comprising a second yarn guide portion which serves as an insulating portion and covers the first yarn guide portion.

8. A support member having conductivity and supporting the plurality of thread guides, The yarn processing apparatus according to any one of claims 1 to 6, characterized in that the support member and each yarn guide are insulated from each other.

9. The plurality of thread guides are semiconductive, A support member having conductivity and supporting the plurality of thread guides, The yarn processing apparatus according to any one of claims 1 to 4, characterized in that each yarn guide and the support member are electrically connected.

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