Silk thread winding device

Abstract

The present invention enables the state of a thread to be detected with high precision and the configuration to be simplified in a thread winding device. In the traverse device, at least a contact portion of a fulcrum yarn guide (61) serving as a traverse fulcrum, which is in contact with the yarn, is electrically conductive or semi-conductive. The electrostatic quantity detection circuit (51) outputs a signal corresponding to the electrostatic quantity generated in the fulcrum yarn guide. When the maximum change amount ([delta] E) of the electrostatic quantity indicated by the signal output from the electrostatic quantity detection circuit is equal to or less than a threshold value ([delta] Ea) during the period from the time before the predetermined time to the present time (S102: YES), the control unit (52) outputs a first signal (S103) indicating that the state of the yarn in the fulcrum yarn guide (10) is in a predetermined state. When the maximum amount of change ([delta] E) is greater than a threshold value ([delta] Ea) (S102: NO), the control unit outputs a second signal (S104) indicating that the yarn in the fulcrum guide is not in a predetermined state (S104).

Description

Technical Field

[0001] This invention relates to a yarn winding device. Background Technology

[0002] In the yarn breakage detection device of Patent Document 1, a current collector is provided for the traveling yarn. The current collector contacts the yarn and detects the static electricity generated due to contact with the traveling yarn. Furthermore, in Patent Document 1, yarn breakage is detected based on the static electricity detected in the current collector. In Patent Document 2, a spinning take-up machine is described as a yarn take-up device that takes up yarn spun from a spinning device.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 48-98132

[0006] Patent Document 2: Japanese Patent Application Publication No. 2015-78455 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] Here, we consider incorporating a thread breakage detection device, similar to that in Patent Document 1, into a thread winding device such as Patent Document 2. In this case, the number of parts in the thread breakage detection device of Patent Document 1 increases accordingly because a dedicated current collector is provided for the thread. Furthermore, in this case, space for arranging the current collector needs to be secured within the thread processing device equipped with the thread breakage detection device. Therefore, in the case of incorporating a thread breakage detection device like that in Patent Document 1 into a thread processing device like that in Patent Document 2, the structure of the thread processing device may become complex.

[0009] The purpose of this invention is to provide a thread winding device that can detect the state of the thread and simplify its structure.

[0010] Methods for solving problems

[0011] According to the first embodiment, the yarn winding device includes a traversing device for traversing a traveling yarn, and winds the traversing yarn into a bobbin. The traversing device has a fulcrum guide, which contacts the yarn to become the fulcrum for traversing. At least the contact portion of the fulcrum guide that contacts the yarn is conductive or semi-conductive. The yarn winding device also includes an electrostatic detection unit that detects the amount of electrostatic charge generated in the fulcrum guide.

[0012] According to this solution, the condition of the yarn can be detected based on the detection result of the amount of static electricity generated in the fulcrum guide.

[0013] Furthermore, in cases where a dedicated contact component is separately provided to generate static electricity through contact with the yarn, and the amount of static electricity generated in the contact component is detected, the number of parts increases, and space needs to be ensured for the placement of the contact component, making the structure of the yarn winding device more complex. In contrast, in this solution, in a yarn winding device equipped with a traverse device including a fulcrum guide, the amount of static electricity generated in the fulcrum guide due to contact between the yarn and the fulcrum guide is detected. Therefore, compared to the case of separately providing the aforementioned dedicated contact component, the structure of the yarn winding device can be simplified.

[0014] The yarn winding device according to the second embodiment is configured such that, in the yarn winding device according to the first embodiment, it includes a control unit, which outputs a yarn state signal indicating the state of the yarn in the fulcrum guide based on the amount of static electricity detected by the static electricity detection unit.

[0015] According to this scheme, the control unit outputs a yarn status signal based on the amount of static electricity in the fulcrum guide. Therefore, the yarn status can be detected based on the yarn status signal.

[0016] According to the third embodiment, the yarn winding device is configured such that, in the yarn winding device according to the second embodiment, the control unit outputs the yarn status signal based on the relationship between the value of a parameter associated with the amount of static electricity in the fulcrum guide detected by the static electricity detection unit and a threshold value.

[0017] According to this scheme, the control unit outputs a wire status signal based on the relationship between the value of a parameter associated with the amount of electrostatic charge in the fulcrum guide and a threshold value. Therefore, it is possible to detect whether the wire in the fulcrum guide is in a specified state based on the wire status signal.

[0018] According to the fourth embodiment, the yarn winding device is configured such that, in the yarn winding device according to the third embodiment, the value of the parameter is the maximum value of the change in the amount of static electricity in the fulcrum guide detected by the static electricity detection unit.

[0019] According to this scheme, the control unit outputs a wire status signal based on the relationship between the maximum value of the change in electrostatic charge in the fulcrum guide and a threshold value. Therefore, it is possible to detect whether the wire in the fulcrum guide is in a specified state based on the wire status signal.

[0020] According to the fifth embodiment, the yarn winding device is configured such that, in the yarn winding device according to the third embodiment, the electrostatic quantity detection unit detects the electrostatic quantity by detecting the voltage or current generated in the fulcrum guide due to the electrostatic charge generated in the fulcrum guide, and the value of the parameter is the value of the voltage or current detected by the electrostatic quantity detection unit.

[0021] According to this scheme, the control unit outputs a wire status signal based on the relationship between the voltage or current generated in the fulcrum wire guide due to static electricity and a threshold value. Therefore, it is possible to detect whether the wire in the fulcrum wire guide is in a specified state based on the wire status signal.

[0022] The yarn winding device according to the sixth embodiment is configured such that, in the yarn winding device according to the second embodiment, it includes a plurality of traversing devices individually provided for multiple yarns, the electrostatic quantity detection unit detects the electrostatic quantity in each of the plurality of fulcrum guides of the plurality of traversing devices, and the control unit outputs the yarn status signal based on the difference between the electrostatic quantity in each fulcrum guide detected by the electrostatic quantity detection unit and the electrostatic quantity in the fulcrum guides other than that fulcrum guide.

[0023] According to this solution, when multiple traverse devices are installed, the control unit outputs a yarn status signal based on the difference between the electrostatic charge in one fulcrum guide and the electrostatic charge in another fulcrum guide. Therefore, it is possible to detect whether the yarn in the fulcrum guide is in a specified state based on the yarn status signal.

[0024] According to the seventh embodiment, the yarn winding device is configured such that, in the yarn winding device according to the sixth embodiment, a plurality of the fulcrum guides are arranged in a row, and the control unit outputs the yarn status signal based on the difference between the electrostatic quantity in each fulcrum guide detected by the electrostatic quantity detection unit and the electrostatic quantity in the adjacent fulcrum guides of that fulcrum guide.

[0025] When multiple fulcrum guides are arranged in a row, if the state of the wires in multiple fulcrum guides is the same, the difference between the static electricity in each fulcrum guide and the static electricity in adjacent fulcrum guides is likely to be minimized. Furthermore, when the state of the wire in a certain fulcrum guide changes, the difference between the static electricity in that fulcrum guide and the static electricity in adjacent fulcrum guides is likely to increase. To address this, in this solution, the control unit outputs a wire state signal based on the difference between the static electricity in a fulcrum guide and the static electricity in adjacent fulcrum guides. Therefore, it is possible to detect whether the state of the wire in the fulcrum guide is in a specified state based on the wire state signal.

[0026] The yarn winding device according to the eighth embodiment is configured such that, in the yarn winding device according to any one of the first to seventh embodiments, a support member is provided, the support member is conductive and supports the fulcrum guide, the fulcrum guide being insulated from the support member.

[0027] According to this scheme, the conductive or semi-conductive fulcrum guide is insulated from the conductive support component. Therefore, when static electricity is generated in the fulcrum guide, no current flows from the fulcrum guide to the support component. Consequently, the amount of static electricity generated in the fulcrum guide due to the contact between the wire and the fulcrum guide is increased, making it easier to detect the condition of the wire based on the amount of static electricity generated in the fulcrum guide.

[0028] According to the ninth embodiment, the yarn winding device is configured such that, in any one of the first to seventh embodiments, the fulcrum guide is semi-conductive, the yarn winding device includes a support member, the support member is conductive and supports the fulcrum guide, and the fulcrum guide is in communication with the support member.

[0029] From the perspective of detecting the condition of the yarn based on the amount of static electricity generated in the fulcrum guide, it is preferable that the amount of static electricity generated in the fulcrum guide due to the contact between the yarn and the fulcrum guide is large. On the other hand, considering the influence of the static electricity generated in the fulcrum guide on the yarn, it is preferable that the amount of static electricity generated in the fulcrum guide is not too large. In this solution, the semi-conductive fulcrum guide is connected to the conductive support member. Therefore, when static electricity is generated in the fulcrum guide, current flows from the fulcrum guide to the support member, thereby preventing the amount of static electricity generated in the fulcrum guide from becoming too large. On the other hand, since the fulcrum guide is semi-conductive, current is less likely to flow from the fulcrum guide to the support member compared to the case where the fulcrum guide is conductive. Therefore, the amount of static electricity generated in the fulcrum guide due to the contact between the yarn and the fulcrum guide is not too small, and the condition of the yarn can be detected based on the amount of static electricity generated in the fulcrum guide.

[0030] Invention Effects

[0031] According to the present invention, the state of the yarn can be detected based on the detection result of the amount of static electricity generated in the fulcrum guide. Furthermore, compared to the case where a dedicated contact member is separately provided to generate static electricity through contact with the traveling yarn, the structure of the yarn winding device can be simplified. Attached Figure Description

[0032] Figure 1 This is a general structural diagram of the multiple oil supply guides and stretching section of the spinning and winding machine according to an embodiment of the present invention.

[0033] Figure 2 This is a general structural diagram of the traction section and winding section of the spinning and winding machine according to an embodiment of the present invention.

[0034] Figure 3 This is a diagram used to illustrate the pivot wire guide and its support structure.

[0035] Figure 4 (a) is a block diagram showing the electrical connections of the fulcrum wire guide, electrostatic detection circuit, and control unit according to an embodiment of the present invention. Figure 4 (b) is a flowchart illustrating the process of processing for outputting the wire status signal in an embodiment of the present invention.

[0036] Figure 5 (a) is a flowchart illustrating the process of processing the output wire status signal in Modification 1. Figure 5 (b) is a flowchart showing the process of processing the output wire status signal in Modified Example 2.

[0037] Figure 6 This is a flowchart illustrating the process of processing the output wire status signal in Modified Example 3.

[0038] Figure 7 This is a diagram used to illustrate the pivot wire guide and its support structure in variation example 4.

[0039] Explanation of reference numerals in the attached figures

[0040] 1: Spinning and winding machine (thread winding device)

[0041] 30: Lateral movement device

[0042] 31: Winding device

[0043] 51: Electrostatic discharge detection circuit (electrostatic discharge detection unit)

[0044] 52: Control Department

[0045] 61: Pivot wire guide

[0046] 67: Slider (support component)

[0047] 68: Insulating components Detailed Implementation

[0048] The preferred embodiments of the present invention will be described below.

[0049] <General Components of a Spinning and Winding Machine>

[0050] like Figure 1 and Figure 2As shown, the spinning and winding machine 1 according to this embodiment (the "thread winding device" in this invention) includes multiple oil supply guides 10, a stretching section 3, a traction section 4, and a winding section 5. It should be noted that, hereinafter, as... Figure 1 and Figure 2 The vertical, forward / backward, and left / right directions are defined as shown in the diagram. The vertical direction is the direction in which gravity acts. The forward / backward, left / right, and vertical directions are orthogonal to each other. Furthermore, as follows... Figure 1 and Figure 2 The diagram illustrates the definitions of the top and bottom sides in the vertical direction, the left and right sides in the horizontal direction, and the front and back sides in the front-back direction.

[0051] <Fuel supply guide>

[0052] like Figure 1 As shown, the spinning section 2 is positioned above the spinning and winding machine 1. The spinning section 2 has multiple spinning units 2A arranged in a row along the left-right direction. Each spinning unit 2A spins multiple filaments F made of molten fiber material such as polyester for forming a single filament Y.

[0053] Multiple oil supply guides 10 are individually provided for multiple spinning units 2A. That is, each oil supply guide 10 is provided for a single yarn Y composed of multiple filaments F spun from the corresponding spinning unit 2A. The multiple oil supply guides 10 are arranged in a row along the left-right direction. The oil supply guide 10 bundles the multiple filaments F spun from the corresponding spinning unit 2A into a single yarn Y and applies oil to the yarn Y.

[0054] <Stretch section>

[0055] The stretching section 3 is positioned below the plurality of oil supply guides 10. The stretching section 3 includes five guide rollers 11a to 11e. These five guide rollers 11a to 11e are rollers whose axial direction is parallel to the front-back direction, and are each driven to rotate by a motor (not shown). Furthermore, each of the five guide rollers 11a to 11e has an internal heater (not shown). The five guide rollers 11a to 11e are housed within a cuboid-shaped insulation box 12. A wire inlet 12a for guiding multiple wires Y into the insulation box 12 and a wire outlet 12b for guiding multiple wires Y from inside the insulation box 12 to the outside are formed on the right side wall of the insulation box 12.

[0056] Multiple filaments Y coated with oil in multiple oil supply guides 10 are arranged in a row by multiple guides 45 of guide units 9A and 9B, and guided from the filament inlet 12a into the heat preservation box 12 by guide roller 13.

[0057] More specifically, the wire guide unit 9A is disposed below the plurality of oil supply guides 10. The wire guide unit 9A has a plurality of wire guides 45 arranged in a row in the left-right direction. The plurality of wire guides 45 of the wire guide unit 9A are individually provided for a plurality of wires Y. The plurality of wires Y coated with oil in the plurality of oil supply guides 10 are arranged in a row in the left-right direction through the plurality of wire guides 45 of the wire guide unit 9A.

[0058] The wire guide unit 9B is positioned below the wire guide unit 9A. The wire guide unit 9B has a plurality of wire guides 45 arranged in a row along the front-to-back direction. The plurality of wire guides 45 of the wire guide unit 9B are individually configured for multiple wires Y. The multiple wires Y have their orientation changed between the wire guide units 9A and 9B, and are arranged in a row along the front-to-back direction by passing through the plurality of wire guides 45 of the wire guide unit 9B.

[0059] The guide roller 13 is a roller parallel to the front-to-back direction and is positioned below the yarn guide unit 9B. Multiple yarns Y, arranged in a row along the front-to-back direction by multiple yarn guides 45 of the yarn guide unit 9B, are transported by the guide roller 13 and guided into the insulation box 12 from the yarn inlet 12a. Furthermore, the multiple yarns Y guided into the insulation box 12 are sequentially wound relative to the five guide rollers 11a to 11e.

[0060] The three guide rollers 11a to 11c on the upstream side are heating rollers used for preheating before stretching multiple filaments Y. The surface temperature of the guide rollers 11a to 11c is set to a temperature above the glass transition temperature of the filament Y. The multiple filaments Y, which are introduced into the heat preservation box 12 from the filament inlet 12a, are preheated to a stretchable temperature, i.e., a temperature above the glass transition temperature, during the conveying process by the three guide rollers 11a to 11c on the upstream side.

[0061] The two downstream guide rollers 11d and 11e are heating rollers used for heat setting of the stretched multiple filaments Y. The surface temperature of the guide rollers 11d and 11e is set to a higher temperature than the surface temperature of the three upstream guide rollers 11a to 11c. Furthermore, the surface speed of the two downstream guide rollers 11d and 11e is higher than the surface speed of the three upstream guide rollers 11a to 11c.

[0062] Furthermore, the multiple filaments Y, preheated by guide rollers 11a to 11c, are stretched by the surface velocity difference between guide rollers 11c and 11d. Additionally, while being conveyed by the two downstream guide rollers 11d and 11e, the multiple filaments Y are heated to a higher temperature, and their stretched state is heat-set. The stretched multiple filaments Y, as described above, are then guided out of the insulation box 12 from the filament outlet 12b. The multiple filaments Y guided out of the insulation box 12 from the filament outlet 12b are then conveyed to the traction unit 4 by guide roller 14.

[0063] In the wire path between the wire outlet 12b and the guide roller 14, multiple interlacing wire guides 8 and wire guide units 9C and 9D are arranged. The multiple interlacing wire guides 8 are individually configured for multiple wires Y and arranged in a row along the front-to-back direction. The interlacing wire guides 8 interlac the wires Y. It should be noted that the configuration of the interlacing wire guides 8 is well known, therefore further detailed description is omitted here.

[0064] The wire guide unit 9C is positioned upstream of the plurality of interlacing wire guides 8 in the wire path. The wire guide unit 9D is positioned downstream of the plurality of interlacing wire guides 8 in the wire path. Wire guide units 9C and 9D each have a plurality of wire guides 45 arranged in a row along the front-back direction at approximately the same intervals as the plurality of interlacing wire guides 8. The plurality of wire guides 45 in wire guide units 9C and 9D are individually configured for a plurality of wires Y. The plurality of wires Y are arranged in a row along the front-back direction by the plurality of wire guides 45 in wire guide unit 9C and the plurality of wire guides 45 in wire guide unit 9D. Furthermore, the plurality of wire guides 45 in wire guide units 9C and 9D respectively support the upstream and downstream portions of the plurality of wires Y located at the intersection of the plurality of interlacing wire guides 8.

[0065] The guide roller 14 is a roller parallel to the front-to-back direction and is located downstream of the yarn path adjacent to the yarn guide unit 9D. Multiple yarns Y, arranged in a row in the front-to-back direction by the multiple yarn guides 45 of the yarn guide unit 9D, are fed to the traction unit 4 by the guide roller 14.

[0066] Traction Unit

[0067] like Figure 2 As shown, the traction unit 4 includes a guide roller 21 and a guide roller 22.

[0068] The guide roller 21 is a roller with its axial direction parallel to the left-right direction, located below the guide roller 14. Furthermore, a guide unit 9E is arranged in the yarn path, located vertically between the guide roller 14 and the guide roller 21, immediately upstream of the guide roller 21. The guide unit 9E has multiple guides 45 arranged in a row along the left-right direction. Each guide 45 in the guide unit 9E is individually configured for multiple yarns Y. The multiple yarns Y have their orientation changed between the guide roller 14 and the guide unit 9E, and after being arranged in a row along the left-right direction by the multiple guides 45 in the guide unit 9E, they are pulled by the guide roller 21. The guide roller 21 is driven to rotate by a motor (not shown), conveying the multiple yarns Y arranged in the left-right direction by the multiple guides 45 in the guide unit 9E to the guide roller 22.

[0069] The guide roller 22 is a roller with its axial direction parallel to the left-right direction, and is positioned rearward than the guide roller 21. Furthermore, a guide unit 9F is disposed in the yarn path immediately upstream of the guide roller 22. The guide unit 9F has multiple guides 45 arranged in a row along the left-right direction. The guide unit 9F is individually configured for multiple yarns Y. The multiple yarns Y are arranged in a row in the left-right direction by passing through the multiple guides 45 of the guide unit 9F. The guide roller 22 is driven to rotate by a motor (not shown), conveying the multiple yarns Y arranged in the left-right direction by the multiple guides 45 of the guide unit 9F to the take-up unit 5.

[0070] Furthermore, the traction unit 4 also includes a guide rail 23, which extends in a manner that the further back it is in the front-rear direction, the higher it is in the vertical direction. The guide roller 22 and the guide unit 9F are mounted on a slider 24 that can move along the guide rail 23. The slider 24 is connected to a motor (not shown) via a pulley (not shown), a belt (not shown), etc. When the motor is driven, the slider 24 moves along the guide rail 23. Thus, the guide roller 22 and the guide unit 9F can... Figure 2 The solid line indicates the rear position during the winding of thread Y, and... Figure 2 The single-dot dashed line indicates the movement between the positions near the front of the guide roller 21 during wire hanging.

[0071] <Curling Section>

[0072] The take-up section 5 includes multiple traverse devices 30, a turntable 71, contact rollers 73, and two bobbin supports 72. The multiple traverse devices 30 are individually configured for multiple yarns Y and are arranged in a row along the front-to-back direction. Each traverse device 30 has a fulcrum guide 61 and a traverse guide 62.

[0073] Multiple fulcrum guides 61 of multiple traverse devices 30 are arranged in a row along the front-rear direction. The multiple fulcrum guides 61 of the multiple traverse devices 30 are mounted on multiple sliders 67, each for a separate fulcrum guide 61. The multiple sliders 67 are supported so as to be movable along a guide rail 68 extending in the front-rear direction. Furthermore, the multiple sliders 67 are connected to a cylinder (not shown). When the cylinder is driven, the multiple sliders 67 move along the guide rail 68 in the front-rear direction. Thus, the multiple fulcrum guides 61 can be moved between a position where they are separated from each other in the front-rear direction during winding of the yarn Y, and a position biased towards the front during yarn hanging. It should be noted that in this embodiment, the slider 67 corresponds to the "support member" of the present invention. Furthermore, the slider 67 and the guide rail 68 are conductive. In this embodiment, conductivity means that the volume resistivity of a material such as a metal is 10⁻⁶. -8 Made of materials with an Ω·cm or less.

[0074] The pivot wire guide 61 and its support structure based on the slider 67 are described. Figure 3 As shown, the slider 67 has a protrusion 67A that is cylindrical and protrudes to the right. The protrusion 67A is also conductive, just like the other parts of the slider 67.

[0075] The fulcrum guide 61 is a cylindrical component with conductive or semi-conductive properties, and the wire Y contacts the outer peripheral surface of the fulcrum guide 61. The inner diameter of the fulcrum guide 61 is slightly larger than the outer diameter of the protrusion 67A, which is inserted into the fulcrum guide 61. In this embodiment, semi-conductive properties refer to materials such as zirconium oxide with a volume resistivity of 10⁻⁶. -7 Below Ω·cm and above 10 -8 It is made of a material with an Ω·cm. In either the case where the fulcrum guide 61 is conductive or semi-conductive, current will flow through the fulcrum guide 61 due to static electricity generated by the contact between the traveling wire Y and the fulcrum guide 61. However, in the case where the fulcrum guide 61 is semi-conductive, the magnitude of the current is smaller compared to the case where the fulcrum guide 61 is conductive.

[0076] Furthermore, an insulating cylindrical member 69 with insulating properties is disposed between the protrusion 67A and the pivot wire guide 61. Thus, the pivot wire guide 61 and the protrusion 67A are insulated from each other by the insulating member 69. In this embodiment, "insulating" means that the material, for example, is a resin with a volume resistivity of 10⁻⁶. 8 Made of materials with an Ω·cm or higher.

[0077] Furthermore, a wire guide 70 is mounted on the slider 67, located on the wire path upstream of the fulcrum wire guide 61. Thus, when the slider 67 moves in the back-and-forth direction, the fulcrum wire guide 61 and the wire guide 70 also move in the back-and-forth direction.

[0078] like Figure 2 As shown, multiple traverse guides 62 of the multiple traverse devices 30 are positioned downstream of the corresponding pivot guide 61 in the direction of travel of the yarn Y, and are arranged in a row in the front-back direction. The traverse guides 62 are driven by a motor (not shown) to cause the yarn Y to traverse in the front-back direction with the pivot guide 61 as the center.

[0079] The turntable 71 is a circular plate-shaped component with its axis parallel to the front-back direction. The turntable 71 is driven to rotate by a motor (not shown). Two bobbin supports 72, each with its axis parallel to the front-back direction, are rotatably supported on the upper and lower ends of the turntable 71. Multiple bobbins B, individually configured for multiple threads Y, are arranged and mounted on each bobbin support 72 along the front-back direction. Furthermore, each of the two bobbin supports 72 is independently driven to rotate by a motor (not shown).

[0080] Therefore, when the upper bobbin support 72 is driven to rotate, the thread Y, which is laterally moved by the lateral movement device 30, is wound onto the bobbin B to form a roll P. Furthermore, after the roll P is formed, the upper and lower positions of the two bobbin supports 72 are switched by rotating the turntable 71. As a result, the bobbin support 72, previously located on the lower side, moves to the upper side, allowing the thread Y to be wound onto the bobbin B mounted on that bobbin support 72 to form the roll P. Additionally, the bobbin support 72, previously located on the upper side, moves to the lower side, allowing the roll P to be retrieved.

[0081] The contact roller 73 is a roller whose axial direction is parallel to the front-back direction. The contact roller 73 is disposed above the upper bobbin support 72. The contact roller 73 applies contact pressure to the surface of the multiple rolls P formed by winding yarn Y on the bobbin B mounted on the upper bobbin support 72.

[0082] <Detection of the state of the thread in the pivot guide>

[0083] Next, the detection of the state of the yarn Y in the multiple fulcrum guides 61 of the multiple traverse devices 30 will be explained.

[0084] like Figure 4 As shown in (a), in addition to the above-described structure, the spinning and winding machine 1 also includes multiple electrostatic discharge detection circuits 51 and a control unit 52. Each electrostatic discharge detection circuit 51 is individually provided for each of the multiple fulcrum guides of the multiple traverse devices 30 and is electrically connected to the corresponding fulcrum guide 61. The electrostatic discharge detection circuit 51 outputs a signal corresponding to the amount of electrostatic discharge generated in the fulcrum guide 61. It should be noted that, in this embodiment, the combination of multiple electrostatic discharge detection circuits 51 is equivalent to the "electrostatic discharge detection unit" of the present invention.

[0085] The control unit 52 outputs a wire state signal indicating whether the wire Y in the fulcrum guide 61 is in a predetermined state, based on the signal output from each of the plurality of electrostatic quantity detection circuits 51. Here, a predetermined state for the wire Y in the fulcrum guide 61 means, for example, that the tension of the wire Y in the fulcrum guide 61 is within the normal range and that the wire Y has not broken near the fulcrum guide 61. Conversely, a non-predetermined state for the wire Y in the fulcrum guide 61 means, for example, that the tension of the wire Y in the fulcrum guide 61 is outside the normal range and that the wire Y has broken near the fulcrum guide 61.

[0086] It should be noted that the control unit 52 also controls the operation of the motor (not shown) of the spinning take-up machine 1, but its detailed description is omitted here.

[0087] Next, the output of the aforementioned wire status signal by the control unit 52 will be described in detail. The control unit 52, for each of the plurality of electrostatic discharge detection circuits 51, according to... Figure 4 The flowchart in (b) is processed to output the aforementioned thread status signal. For Figure 4 The flowchart of (b) will be described in detail. Specifically, the control unit 52 first calculates the maximum value of the change in static electricity during the period from the time before the predetermined time to the present, i.e., the maximum change ΔE (S101). It should be noted that in this embodiment, the value of the maximum change ΔE is equivalent to the "value of the parameter associated with the static electricity" in this invention.

[0088] Next, the control unit 52 determines whether the maximum change ΔE is below the threshold ΔEa (S102). If the maximum change ΔE is below the threshold ΔEa (S102: Yes), the control unit 52 outputs a first signal indicating that the state of the thread Y in the fulcrum guide 61 is a predetermined state as a thread state signal (S103). If the maximum change ΔE is greater than the threshold ΔEa (S102: No), the control unit 52 outputs a second signal indicating that the state of the thread Y in the fulcrum guide 61 is not a predetermined state as a thread state signal (S104). Then, after the thread state signals in S103 and S104 are output, the processing returns to S101.

[0089] <Effect>

[0090] In this embodiment, the state of the yarn Y can be detected based on the detection result of the amount of static electricity generated in the fulcrum guide 61 due to the contact between the traveling yarn Y and the fulcrum guide 61.

[0091] Furthermore, in the case where a dedicated contact component is separately provided to generate static electricity through contact with the yarn Y, unlike the present invention, the number of parts increases, and space needs to be ensured for arranging the contact component, making the structure of the yarn winding machine 1 more complex. In contrast, in this embodiment, in the yarn winding machine 1 equipped with a traverse device 30 including a fulcrum guide 61, the amount of static electricity generated in the fulcrum guide 61 due to contact between the yarn Y and the fulcrum guide 61 is detected. Therefore, compared to the case where the aforementioned dedicated contact component is separately provided, the structure of the yarn winding machine 1 can be simplified.

[0092] Furthermore, in this embodiment, based on the signal output by the electrostatic quantity detection circuit 51 corresponding to the amount of electrostatic charge generated in the fulcrum guide 61, the control unit 52 outputs a thread state signal indicating the state of thread Y. Specifically, the control unit 52 outputs a thread state signal indicating whether the state of thread Y in the fulcrum guide 61 is a predetermined state based on the maximum value of the change in the amount of electrostatic charge generated in the fulcrum guide 61, i.e., the relationship between the maximum change ΔE and the threshold ΔEa. Thus, it is possible to detect whether the state of thread Y in the fulcrum guide 61 is a predetermined state based on the thread state signal.

[0093] Furthermore, in this embodiment, when the fulcrum guide 61 is conductive or semi-conductive and the slider 67 supporting the fulcrum guide 61 is conductive, the fulcrum guide 61 and the slider 67 are insulated by the insulating member 69. Therefore, when static electricity is generated in the fulcrum guide 61, no current flows from the fulcrum guide 61 to the slider 67. As a result, the amount of static electricity generated in the fulcrum guide 61 due to the contact between the wire Y and the fulcrum guide 61 increases, making it easier to detect the state of the wire Y based on the amount of static electricity generated in the fulcrum guide 61.

[0094] <Variation Example>

[0095] The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical solution described.

[0096] In the above embodiment, the control unit 52 outputs a yarn status signal based on the maximum value of the change in the amount of static electricity in the fulcrum guide 61, i.e., the maximum change ΔE, but is not limited thereto.

[0097] In Modification 1, the electrostatic discharge detection circuit 51 detects the voltage generated in the fulcrum wire guide 61 due to static electricity generated therein, and outputs a signal corresponding to its voltage value V. Here, the greater the amount of static electricity generated in the fulcrum wire guide 61, the greater the voltage value V. It should be noted that in Modification 1, the voltage value V corresponds to the "value of the parameter associated with the amount of static electricity" in this invention.

[0098] Furthermore, the control unit 52, for each of the multiple electrostatic discharge detection circuits 51, according to Figure 5 The process is performed on flowchart (a) to output a thread status signal. Specifically, the control unit 52 first obtains the voltage value V based on the signal output from the electrostatic discharge detection circuit 51 (S201).

[0099] Next, the control unit 52 determines whether the voltage value V is within the range of voltage value Va above and voltage value Vb below (S202). It should be noted that in Modification 1, voltage value Va and voltage value Vb are respectively equivalent to the "threshold" of the present invention.

[0100] When the voltage value V is within the range of voltage value Va and voltage value Vb (S202: Yes), the control unit 52 outputs a first signal as a thread status signal (S203). When the voltage value V is lower than voltage value Va or higher than voltage value Vb (S202: No), the control unit 52 outputs a second signal as a thread status signal (S204). Then, after the thread status signals in S203 and S204 are output, the processing returns to S201.

[0101] In Modification 1, the control unit 52 outputs a wire state signal based on the relationship between the voltage value V generated in the fulcrum wire guide 61 due to static electricity and the voltage values ​​Va and Vb, which serve as thresholds. Thus, it is possible to detect whether the state of the wire Y in the fulcrum wire guide 61 is in a predetermined state based on the wire state signal.

[0102] In Modification 2, the electrostatic discharge detection circuit 51 detects the current generated in the fulcrum wire guide 61 due to the static electricity generated therein, and outputs a signal corresponding to the current value I. Here, the greater the amount of static electricity generated in the fulcrum wire guide 61, the greater the current value I. It should be noted that in Modification 2, the current value I corresponds to the "value of the parameter associated with the amount of static electricity" in this invention.

[0103] Furthermore, the control unit 52, for each of the multiple electrostatic discharge detection circuits 51, according to Figure 5The process is performed on flowchart (b) to output a wire status signal. Specifically, the control unit 52 first obtains the current value I based on the signal output from the electrostatic detection circuit 51 (S301).

[0104] Next, the control unit 52 determines whether the current value I is within the range of current value Ia above and current value Ib below (S302). It should be noted that in Modification 2, current value Ia and current value Ib are respectively equivalent to the "threshold" of the present invention.

[0105] When the current value I is within the range of current value Ia and current value Ib (S302: Yes), the control unit 52 outputs a first signal as a thread status signal (S303). When the current value I is lower than current value Ia or higher than current value Ib (S302: No), the control unit 52 outputs a second signal as a thread status signal (S304). Then, after the thread status signals in S303 and S304 are output, the processing returns to S301.

[0106] In Modification 2, the control unit 52 outputs a wire state signal based on the relationship between the current value I generated in the fulcrum wire guide 61 due to static electricity and the current values ​​Ia and Ib, which serve as thresholds. Therefore, it is possible to detect whether the state of the wire Y in the fulcrum wire guide 61 is in a predetermined state based on the wire state signal.

[0107] In addition, the wire status signal can be output based on the relationship between the values ​​of parameters related to the amount of static electricity generated in the fulcrum wire guide 61 and a threshold value, except for the maximum change ΔE of the amount of static electricity generated in the fulcrum wire guide 61, the voltage value V of the voltage generated in the fulcrum wire guide 61 due to the static electricity generated in the fulcrum wire guide 61, and the current value I of the current generated in the fulcrum wire guide 61 due to the static electricity generated in the fulcrum wire guide 61.

[0108] Furthermore, a yarn status signal can be output based on the difference in electrostatic charge between the multiple fulcrum guides 61. For example, in Modification 3, the electrostatic charge detection circuit 51 outputs a signal corresponding to the amount of electrostatic charge generated in the fulcrum guides 61. Moreover, the control unit 52 adjusts the output signal according to the electrostatic charge detection circuit 51 for each of the multiple electrostatic charge detection circuits 51. Figure 6 The flowchart is processed to output the wire status signal.

[0109] Specifically, the control unit 52 first calculates the electrostatic difference Ed, which is the difference between the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 and the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the adjacent fulcrum wire guide 61 (S401).

[0110] At this time, regarding the electrostatic quantity detection circuit 51 provided for the foremost fulcrum wire guide 61, the difference between the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the fulcrum wire guide 61 and the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the adjacent fulcrum wire guide 61 on the rear side of the fulcrum wire guide 61 is calculated as the electrostatic quantity difference Ed.

[0111] Furthermore, regarding the electrostatic quantity detection circuit 51 provided for the last-side pivot wire guide 61, the difference between the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the pivot wire guide 61 and the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the adjacent pivot wire guide 61 on the front side of the pivot wire guide 61 is calculated as the electrostatic quantity difference Ed.

[0112] Furthermore, regarding the electrostatic discharge detection circuit 51 provided for the fulcrum guides 61 other than the foremost and rearmost fulcrum guides 61, the difference between the electrostatic discharge represented by the signal output from the electrostatic discharge detection circuit 51 provided for the fulcrum guide 61 and the electrostatic discharge represented by the signal output from the electrostatic discharge detection circuit 51 provided for the adjacent fulcrum guides 61 on the front or rear side of the fulcrum guide 61 is calculated as the electrostatic discharge difference Ed. Alternatively, for example, the following average value can be calculated as the electrostatic difference Ed, which is the average of the difference between the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the pivot wire guide 61, the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the adjacent pivot wire guide 61 on the front side of the pivot wire guide 61, and the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the adjacent pivot wire guide 61 on the rear side of the pivot wire guide 61.

[0113] Next, the control unit 52 determines whether the electrostatic difference Ed is below the threshold Eda (S402). If the electrostatic difference Ed is below the threshold Eda (S402: Yes), the control unit 52 outputs a first signal as a thread status signal (S403). If the electrostatic difference Ed is greater than the threshold Eda (S402: No), the control unit 52 outputs a second signal as a thread status signal (S404). Then, after the thread status signals are output in S403 and S404, the processing returns to S401.

[0114] In Modification 3, when multiple fulcrum guides 61 are provided, the control unit 52 outputs a wire state signal based on the difference between the static electricity in one fulcrum guide 61 and the static electricity in another fulcrum guide 61. Therefore, it is possible to detect whether the state of the wire Y in the fulcrum guide 61 is in a predetermined state based on the wire state signal.

[0115] Furthermore, when multiple fulcrum guides 61 are arranged in a row, as in Modification 3, the difference between the static charge in each fulcrum guide 61 and the static charge in adjacent fulcrum guides 61 is likely to be minimal when the state of the yarn Y in the multiple fulcrum guides 61 is the same. Moreover, when the state of the yarn Y in a certain fulcrum guide 61 changes, the difference between the static charge in that fulcrum guide 61 and the static charge in adjacent fulcrum guides 61 is likely to increase. Therefore, in Modification 3, the control unit 52 outputs a yarn state signal based on the difference between the static charge in each fulcrum guide 61 and the static charge in adjacent fulcrum guides 61. Thus, it is possible to detect whether the state of the yarn Y in the fulcrum guide 61 is in a predetermined state based on the yarn state signal.

[0116] Furthermore, in Modification 3, the difference between the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for each fulcrum guide 61 and the electrostatic quantity represented by the signal output from the electrostatic quantity detection circuit 51 provided for the fulcrum guide 61 other than the adjacent fulcrum guide 61 can be calculated as the electrostatic quantity difference Ed. In this case, the multiple traverse devices 30 having fulcrum guides 61 can be arranged in a row or not.

[0117] Furthermore, in the above embodiments, the plurality of pivot wire guides 61 are conductive or semi-conductive, the slider 67 supporting the plurality of pivot wire guides 61 is conductive, and each pivot wire guide 61 and the slider 67 are insulated from each other by an insulating member 69. However, this is not a limitation.

[0118] In Modification 4, the multiple pivot wire guides 61 are each semi-conductive. On the other hand, the slider 67 is conductive, similar to the embodiment described above. Furthermore, in Modification 4, as... Figure 7 As shown, no insulating component 69 is disposed between the protrusions 67A of the respective pivot wire guides 61 and sliders 67 (see Figure 67). Figure 3 In (a), each fulcrum wire guide 61 is in direct contact with the protrusion 67A of the slider 67, thereby enabling each fulcrum wire guide 61 to conduct with the slider 67.

[0119] From the perspective of detecting the state of the yarn Y based on the amount of static electricity generated in the fulcrum guide 61, it is preferable that the amount of static electricity generated in the fulcrum guide 61 due to the contact between the yarn Y and the fulcrum guide 61 is large. On the other hand, considering the influence of the static electricity generated in the fulcrum guide 61 on the yarn Y, it is preferable that the amount of static electricity generated in the fulcrum guide 61 is not too large.

[0120] In Modification 4, the semi-conductive fulcrum wire guide 61 is connected to the conductive slider 67. Therefore, when static electricity is generated in the fulcrum wire guide 61, current flows from the fulcrum wire guide 61 to the slider 67, thus preventing the amount of static electricity generated in the fulcrum wire guide 61 from becoming excessive. On the other hand, since the fulcrum wire guide 61 is semi-conductive, current is less likely to flow from the fulcrum wire guide 61 to the slider 67 compared to the case where the fulcrum wire guide 61 is conductive. Therefore, the amount of static electricity generated in the fulcrum wire guide 61 due to the contact between the wire Y and the fulcrum wire guide 61 is not too small, and the state of the wire Y can be detected based on the amount of static electricity generated in the fulcrum wire guide 61.

[0121] Furthermore, in the above example, the fulcrum guide 61 is generally conductive or semi-conductive, but is not limited to this. In the fulcrum guide 61, only a portion, including the contact portion that contacts the wire Y, may be conductive or semi-conductive. In this case, the electrostatic discharge detection circuit 51 can output a signal corresponding to the amount of electrostatic discharge generated in the fulcrum guide 61 due to contact with the wire Y.

[0122] Furthermore, in this case, the fulcrum guide 61 may have a portion that is conductive or semi-conductive, including the contact portion that contacts the wire Y, and this portion of the fulcrum guide 61 may be insulated from the slider 67. Alternatively, the fulcrum guide 61 may have a portion that is semi-conductive, including the contact portion that contacts the wire Y, and this portion of the fulcrum guide 61 may be conductive to the slider 67.

[0123] Furthermore, in the above example, the fulcrum guides 61 of the multiple traverse devices 30 are supported by individual sliders 67, and these sliders 67 can move along the guide rail 68 in the front-back direction, but are not limited thereto. For example, the fulcrum guides 61 of the multiple traverse devices 30 may also be supported by support members that are fixed and do not move in the front-back direction. In this case, the fulcrum guides 61 of the multiple traverse devices 30 may be supported by individual support members, or two or more fulcrum guides 61 may be supported by a common support member. In the above example, the support member supporting the fulcrum guide 61 is conductive, but the support member supporting the fulcrum guide 61 may also be insulating.

[0124] Furthermore, in the above example, the control unit 52 outputs a thread status signal indicating whether the state of the thread Y in the fulcrum guide 61 is a predetermined state, but it is not limited to this. The control unit 52 may also output a thread status signal indicating whether the state of the thread Y in the fulcrum guide 61 is a state other than a predetermined state, based on the signal output from the electrostatic detection circuit 51. For example, the control unit 52 may output a thread status signal indicating the tension of the thread Y in the fulcrum guide 61, based on the signal output from the electrostatic detection circuit 51.

[0125] Furthermore, in the above example, the spinning and winding machine 1 includes a control unit 52, which outputs a yarn state signal indicating the state of yarn Y based on the signal output from the electrostatic quantity detection circuit 51, but is not limited to this. For example, the spinning and winding machine may not include a control unit 52. Moreover, the multiple electrostatic quantity detection circuits 51 of the spinning and winding machine can be connected to an external processing device such as a PC, and the state of yarn Y can be detected based on the signal output from the electrostatic quantity detection circuit 51 in this processing device.

[0126] Furthermore, in the above example, the fulcrum guide 61 is configured as a cylinder, and the wire Y contacts the outer peripheral surface of the fulcrum guide 61, but it is not limited to this. The fulcrum guide 61 may also have another configuration that allows it to contact the wire Y and support the wire Y in a lateral fulcrum manner.

[0127] Furthermore, in the above examples, the present invention is applied to a spinning winding machine that winds a traveling yarn Y to form a package, but it is not limited thereto. The present invention can also be applied to yarn winding devices other than spinning winding machines, including a traverse device with a fulcrum guide. Moreover, in this case, the yarn winding device is not limited to a device having multiple traverse devices and winding multiple yarns, but can also be a device having only one traverse device and winding only one yarn.

Claims

1. A yarn winding device, characterized in that, It has a traversing device that causes the traveling yarn to traverse laterally, and winds the yarn, which is traversed laterally by the traversing device, into a bobbin. The traversing device has a fulcrum guide, which contacts the yarn and becomes the fulcrum for traversing. At least the contact portion of the fulcrum guide that contacts the wire is conductive or semi-conductive. The yarn winding device also includes an electrostatic detection unit, which detects the amount of static electricity generated in the fulcrum guide.

2. The yarn winding device according to claim 1, characterized in that, The device includes a control unit that outputs a wire state signal indicating the state of the wire in the fulcrum wire guide based on the amount of static electricity detected by the static electricity detection unit.

3. The yarn winding device according to claim 2, characterized in that, The control unit outputs the yarn status signal based on the relationship between the value of a parameter associated with the amount of static electricity in the fulcrum guide detected by the electrostatic quantity detection unit and a threshold value.

4. The yarn winding device according to claim 3, characterized in that, The value of the parameter is the maximum value of the change in the electrostatic quantity in the fulcrum wire guide detected by the electrostatic quantity detection unit.

5. The yarn winding device according to claim 3, characterized in that, The electrostatic discharge detection unit detects the amount of electrostatic discharge by detecting the voltage or current generated in the fulcrum wire guide due to the electrostatic discharge generated in the fulcrum wire guide. The value of the parameter is the voltage or current value detected by the electrostatic detection unit.

6. The yarn winding device according to claim 2, characterized in that, It is equipped with multiple traverse devices individually configured for each of the multiple threads. The electrostatic discharge detection unit detects the electrostatic discharge in each of the multiple pivot wire guides of the multiple traverse devices. The control unit outputs the yarn status signal based on the difference between the electrostatic quantity in each fulcrum guide detected by the electrostatic quantity detection unit and the electrostatic quantity in the fulcrum guides other than that fulcrum guide.

7. The yarn winding device according to claim 6, characterized in that, Multiple of the aforementioned pivot guides are arranged in a row. The control unit outputs the yarn status signal based on the difference between the electrostatic quantity in each fulcrum guide detected by the electrostatic quantity detection unit and the electrostatic quantity in the adjacent fulcrum guides of that fulcrum guide.

8. The yarn winding apparatus according to any one of claims 1 to 7, characterized in that, It includes a support component that is conductive and supports the pivot wire guide. The fulcrum guide wire is insulated from the support component.

9. The yarn winding apparatus according to any one of claims 1 to 7, characterized in that, The pivot wire guide is semi-conductive. The yarn winding device includes a support component that is conductive and supports the fulcrum guide. The fulcrum guide wire is connected to the support component.

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