Wire winding device

Abstract

In a yarn winding device, the condition of the yarn is detected with high accuracy, and the device's structure is simplified. [Solution] In the traverse device, the pivot guide 61, which serves as the pivot point for the traverse, has at least the portion in contact with the thread that is conductive or semiconductive. The electrostatic charge detection circuit 51 outputs a signal corresponding to the amount of electrostatic charge generated in the pivot guide 61. If the maximum change amount ΔE of the electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 during the period from a predetermined time ago to the present is less than or equal to the threshold ΔEa (S102: YES), the control unit 52 outputs a first signal indicating that the state of the thread in the pivot guide 10 is in a predetermined state (S103). If the maximum change amount ΔE is greater than the threshold ΔEa (S102: NO), the control unit 52 outputs a second signal indicating that the state of the thread in the pivot guide 61 is not in a predetermined state (S104).

Description

Technical Field

[0001] The present invention relates to a yarn winding device.

Background Art

[0002] In the yarn breakage detection device of Patent Document 1, a current collector is provided for the running yarn. The current collector is in contact with the yarn and detects static electricity generated by the contact with the running yarn. And in Patent Document 1, yarn breakage is detected based on the static electricity detected by the current collector. Patent Document 2 describes a spinning winder that winds the yarn spun from a spinning device as a yarn winding device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, consider providing a yarn breakage detection device as in Patent Document 1 in a yarn winding device as in Patent Document 2. In this case, in the yarn breakage detection device of Patent Document 1, since a dedicated current collector is provided for the yarn, the number of parts increases by the number of current collectors provided. Also, in this case, it is necessary to secure a space for arranging the current collector in the yarn winding device where the yarn breakage detection device is provided. For these reasons, when providing a yarn breakage detection device as in Patent Document 1 in a yarn winding device as in Patent Document 2, the configuration of the yarn winding device may become complicated.

[0005] An object of the present invention is to provide a yarn winding device capable of detecting the state of yarn and simplifying the configuration.

Means for Solving the Problems

[0006] The yarn winding device according to the first invention is a yarn winding device that includes a traverse device for traversing a running yarn, and winds the yarn traversed by the traverse device onto a bobbin, wherein the traverse device has a pivot guide that contacts the yarn and serves as a pivot point for traversing, and the pivot guide has at least the portion in contact with the yarn that is conductive or semiconductive, and includes an electrostatic amount detection unit that detects the amount of electrostatic charge generated on the pivot guide.

[0007] According to the present invention, the state of the thread can be detected based on the detection result of the amount of static electricity generated in the pivot guide.

[0008] Furthermore, unlike the present invention, if a separate dedicated contact member is provided to generate static electricity upon contact with the thread, 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 thread winding device more complex. In contrast, the present invention provides a thread winding device equipped with a traverse device including a pivot guide, and detects the amount of static electricity generated on the pivot guide upon contact between the thread and the pivot guide. Therefore, the configuration of the thread winding device can be simplified compared to the case in which a separate dedicated contact member is provided.

[0009] The yarn winding device according to the second invention is a yarn winding device according to the first invention, and includes a control unit that outputs a yarn state signal indicating the state of the yarn in the pivot guide based on the amount of static electricity in the pivot guide detected by the static electricity amount detection unit.

[0010] According to the present invention, the control unit outputs a thread state signal based on the amount of static electricity in the pivot guide. This makes it possible to detect the state of the thread based on the thread state signal.

[0011] The yarn winding device according to the third invention is the yarn winding device according to the second invention, wherein the control unit outputs the yarn state signal based on the relationship between the value of a parameter related to the amount of static electricity in the pivot guide detected by the electrostatic amount detection unit and a threshold value.

[0012] According to the present invention, the control unit outputs a thread state signal based on the relationship between the value of a parameter related to the amount of static electricity in the pivot guide and a threshold value. This makes it possible to detect whether the state of the thread in the pivot guide is in a predetermined state based on the thread state signal.

[0013] The yarn winding device according to the fourth invention is the yarn winding device according to the third invention, wherein the value of the parameter is the maximum value of the change in the amount of static electricity at the pivot guide detected by the amount of static electricity detection unit.

[0014] According to the present invention, the control unit outputs a thread state signal based on the relationship between the maximum value of the change in the amount of static electricity in the pivot guide and a threshold value. This makes it possible to detect whether the state of the thread in the pivot guide is in a predetermined state based on the thread state signal.

[0015] The fifth invention relates to the third invention, wherein the electrostatic quantity detection unit detects the electrostatic quantity by detecting the voltage or current generated in the pivot guide due to the electrostatic electricity generated in the pivot guide, and the value of the parameter is the voltage or current value detected by the electrostatic quantity detection unit.

[0016] According to the present invention, the control unit outputs a thread state signal based on the relationship between the voltage or current generated in the pivot guide due to static electricity generated in the pivot guide and a threshold value. This makes it possible to detect whether the state of the thread in the pivot guide is in a predetermined state based on the thread state signal.

[0017] The yarn winding device according to the sixth invention comprises a plurality of traverse devices individually provided for a plurality of yarns, the yarn winding device according to the second invention, the electrostatic amount detection unit detects the electrostatic amount at each of the plurality of pivot guides of the plurality of traverse devices, and the control unit outputs the yarn state signal based on the difference between the electrostatic amount at each pivot guide detected by the electrostatic amount detection unit and the electrostatic amount at a pivot guide other than that pivot guide.

[0018] According to the present invention, when multiple traverse devices are provided, the control unit outputs a thread state signal based on the difference between the amount of static electricity at one support guide and the amount of static electricity at another support guide. This makes it possible to detect whether the state of the thread at the support guide is in a predetermined state based on the thread state signal.

[0019] The yarn winding device according to the seventh invention is the yarn winding device according to the sixth invention, wherein a plurality of the pivot guides are arranged in a row, and the control unit outputs the yarn state signal based on the difference between the amount of static electricity at each pivot guide detected by the static electricity amount detection unit and the amount of static electricity at the adjacent pivot guide.

[0020] When multiple support guides are arranged in a row, the difference in the amount of static electricity at each support guide is likely to be smallest when the state of the thread is the same at all of them. When the state of the thread changes at a particular support guide, the difference in the amount of static electricity at that support guide compared to the amount of static electricity at the adjacent support guide is likely to increase. In contrast, in this invention, the control unit outputs a thread state signal based on the difference in the amount of static electricity at one support guide compared to the amount of static electricity at the adjacent support guide. This makes it possible to detect whether the state of the thread at a support guide is in a predetermined state based on the thread state signal.

[0021] The thread take-up device according to the eighth invention is the thread take-up device according to any one of the first to seventh inventions, and includes a support member that has conductivity and supports the fulcrum guide, and the fulcrum guide and the support member are insulated from each other.

[0022] According to the present invention, since the fulcrum guide having conductivity or semiconduction is insulated from the support member having conductivity, when static electricity is generated in the fulcrum guide, no current flows from the fulcrum guide to the support member. As a result, the amount of static electricity generated in the fulcrum guide due to the contact between the thread and the fulcrum guide increases, and it becomes easy to detect the state of the thread based on the amount of static electricity generated in the fulcrum guide.

[0023] The thread take-up device according to the ninth invention is the thread take-up device according to any one of the first to seventh inventions, and includes a support member that has semiconduction and has conductivity and supports the fulcrum guide, and the fulcrum guide and the support member are electrically connected.

[0024] From the viewpoint of detecting the state of the thread 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 thread and the fulcrum guide is large. On the other hand, considering the influence of the static electricity generated in the fulcrum guide on the thread, it is preferable that the amount of static electricity generated in the fulcrum guide is not too large. In the present invention, the fulcrum guide having semiconduction is electrically connected to the support member having conductivity. As a result, when static electricity is generated in the fulcrum guide, a current flows from the fulcrum guide to the support member, so that the amount of static electricity generated in the fulcrum guide does not become too large. On the other hand, since the fulcrum guide has semiconduction, compared with the case where the fulcrum guide has conductivity, it is difficult for a current to flow from the fulcrum guide to the support member. Therefore, the amount of static electricity generated in the fulcrum guide due to the contact between the thread and the fulcrum guide does not become too small, and the state of the thread can be detected based on the amount of static electricity generated in the fulcrum guide.

Effect of the Invention

[0025] According to the present invention, the state of the thread can be detected based on the detection result of the amount of static electricity generated at the pivot guide. Furthermore, the configuration of the thread winding device can be simplified compared to a case where a separate dedicated contact member is provided that generates static electricity through contact with the moving thread. [Brief explanation of the drawing]

[0026] [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 diagram illustrating the pivot guide and its support structure. [Figure 4] (a) is a block diagram showing the electrical connection relationship of the pivot 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] (a) is a flowchart showing the processing flow for outputting a thread state signal in Modification 1, and (b) is a flowchart showing the processing flow for outputting a thread state signal in Modification 2. [Figure 6] This flowchart shows the processing flow for outputting the thread state signal in Modification Example 3. [Figure 7] This is a diagram illustrating the pivot guide and its support structure in modified example 4. [Modes for carrying out the invention]

[0027] Preferred embodiments of the present invention will be described below.

[0028] <Outline configuration of a spinning and winding machine> As shown in Figures 1 and 2, the spinning and winding machine 1 (the "yarn winding 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 explained 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 explained as shown in Figures 1 and 2.

[0029] <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.

[0030] 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.

[0031] <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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 well known, further detailed explanation is omitted here.

[0040] 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 each 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. In addition, 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.

[0041] 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 a single line 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.

[0042] <Collection Department> As shown in Figure 2, the take-up section 4 includes a godet roller 21 and a godet roller 22.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] <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 a single row in the front-to-back direction. Each traverse device 30 has a pivot guide 61 and a traverse guide 62.

[0047] 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 30 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 positions that are moved closer to the front when threading. In this embodiment, the sliders 67 correspond to the "support members" of the present invention. Also, the sliders 67 and the guide rail 68 are conductive. Here, in this embodiment, conductive means, for example, a metal, with a volume resistivity of 10 -8 It must be made of materials with a minimum Ω·cm.

[0048] The support structure of the pivot guide 61 by the pivot guide 61 and slider 67 will now be described. As shown in Figure 3, the slider 67 is cylindrical and has a projection 67A that protrudes to the right. The projection 67A, like the other parts of the slider 67, is conductive.

[0049] The pivot guide 61 is a cylindrical member that is conductive or semiconductive, and the thread Y is in contact with the outer circumferential surface of the pivot guide 61. The inner diameter of the pivot guide 61 is slightly larger than the outer diameter of the projection 67A, and the projection 67A is inserted through the pivot guide 61. In this embodiment, 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 resistance greater than Ω·cm. In both cases, when the pivot guide 61 is conductive and when it is semiconducting, a current flows through the pivot guide 61 due to static electricity generated by contact between the running thread Y and the pivot guide 61. However, when the pivot guide 61 is semiconducting, the magnitude of the current is smaller than when the pivot guide 61 is conductive.

[0050] Furthermore, a cylindrical insulating member 69 having insulating properties is placed between the protruding portion 67A and the pivot guide 61. Thus, the pivot guide 61 and the protruding portion 67A are insulated by the insulating member 69. In this embodiment, "having insulating properties" means, for example, a resin with a volume resistivity of 10. 8 It must be made of material with a mass of Ω·cm or greater.

[0051] Furthermore, the slider 67 is fitted with a thread guide 70 located on the thread path upstream of the pivot guide 61. As a result, when the slider 67 moves in the forward and backward direction, the pivot guide 61 and the thread guide 70 also move in the forward and backward direction.

[0052] 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.

[0053] 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).

[0054] 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.

[0055] 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.

[0056] <Detection of thread condition in the pivot point guide> Next, we will describe how to detect the state of the thread Y at multiple anchor point guides 61 of multiple traverse devices 30.

[0057] 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 the plurality of pivot guides 61 of the plurality of traverse devices 30 and are electrically connected to the corresponding pivot guides 61. The electrostatic quantity detection circuits 51 output a signal with a value corresponding to the amount of static electricity generated on the pivot guides 61. In this embodiment, the combination of the plurality of electrostatic quantity detection circuits 51 corresponds to the "electrostatic quantity detection unit" of the present invention.

[0058] The control unit 52 outputs a string status signal for each of the multiple electrostatic quantity detection circuits 51, based on the signals output from the electrostatic quantity detection circuits 51, indicating whether the string Y in the pivot guide 61 is in a predetermined state. Here, the state of the string Y in the pivot guide 61 being in a predetermined state means, for example, that the tension of the string Y in the pivot guide 61 is within the normal range, and that the string Y is not broken near the pivot guide 61. Conversely, the state of the string Y in the pivot guide 61 not being in a predetermined state means, for example, that the tension of the string Y in the pivot guide 61 is outside the normal range, and that the string Y is broken near the pivot guide 61.

[0059] 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.

[0060] Next, the output of the thread state signal by the control unit 52 will be described in detail. The control unit 52 outputs the thread state signal by processing each of the multiple electrostatic quantity detection circuits 51 according to the flowchart in Figure 4(b). To describe the flowchart in Figure 4(b) in detail, the control unit 52 first calculates the maximum change amount ΔE, which is the maximum value of the change in the electrostatic quantity during the period from a predetermined time ago to the present (S101). In this embodiment, the value of the maximum change amount ΔE corresponds to the "value of the parameter related to the electrostatic quantity" of the present invention.

[0061] Next, the control unit 52 determines whether the maximum change amount ΔE is less than or equal to the threshold ΔEa (S102). If the maximum change amount ΔE is less than or equal to the threshold ΔEa (S102: YES), the control unit 52 outputs a first signal as a thread state signal indicating that the state of thread Y at the support guide 61 is in a predetermined state (S103). If the maximum change amount ΔE is greater than the threshold ΔEa (S102: NO), the control unit 52 outputs a second signal as a thread state signal indicating that the state of thread Y at the support guide 61 is not in a predetermined state (S104). After the output of the thread state signals in S103 and S104, the process returns to S101.

[0062] <Effects> In this embodiment, the state of the thread Y can be detected based on the detection result of the amount of static electricity generated on the pivot guide 61 due to contact between the running thread Y and the pivot guide 61.

[0063] Furthermore, unlike the present invention, if a separate dedicated contact member is provided that generates static electricity upon contact with the yarn Y, the number of parts increases, and space must be secured for the contact member, making the configuration of the spinning and winding machine 1 more complex. In contrast, in this embodiment, in a spinning and winding machine 1 equipped with a traverse device 30 including a pivot guide 61, the amount of static electricity generated on the pivot guide 61 upon contact between the yarn Y and the pivot guide 61 is detected. Therefore, the configuration of the spinning and winding machine 1 can be simplified compared to the case in which a separate dedicated contact member is provided.

[0064] Furthermore, in this embodiment, based on a signal output by the electrostatic charge detection circuit 51 corresponding to the amount of electrostatic charge generated in the pivot guide 61, the control unit 52 outputs a thread state signal indicating the state of thread Y. Specifically, based on the relationship between the maximum change amount ΔE, which is the maximum value of the change in the amount of electrostatic charge generated in the pivot guide 61, and the threshold ΔEa, the control unit 52 outputs a thread state signal indicating whether or not the state of thread Y in the pivot guide 61 is in a predetermined state. As a result, it is possible to detect whether or not the state of thread Y in the pivot guide 61 is in a predetermined state based on the thread state signal.

[0065] Furthermore, in this embodiment, the pivot guide 61 is conductive or semiconductive, and the slider 67 supporting the pivot guide 61 is conductive, while the pivot guide 61 and the slider 67 are insulated by an insulating member 69. Therefore, when static electricity is generated in the pivot guide 61, no current flows from the pivot guide 61 to the slider 67. As a result, the amount of static electricity generated in the pivot guide 61 due to contact between the thread Y and the pivot guide 61 becomes large, making it easier to detect the state of the thread Y based on the amount of static electricity generated in the pivot guide 61.

[0066] <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.

[0067] In the above-described embodiment, the control unit 52 outputs a thread state signal based on the maximum change amount ΔE, which is the maximum value of the change in the amount of static electricity in the pivot guide 61, but it is not limited to this.

[0068] In Modification 1, the electrostatic charge detection circuit 51 detects the voltage generated on the pivot guide 61 due to the electrostatic charge generated on the pivot guide 61 and outputs a signal corresponding to the voltage value V. Here, the larger the amount of electrostatic charge generated on the pivot guide 61, the larger the voltage value V. In Modification 1, the voltage value V corresponds to the "value of the parameter related to the amount of electrostatic charge" of the present invention.

[0069] The control unit 52 then outputs a state signal by processing each of the multiple electrostatic quantity detection circuits 51 according to the flowchart in Figure 5(a). In more detail, the control unit 52 first acquires a voltage value V based on the signal output from the electrostatic quantity detection circuit 51 (S201).

[0070] Next, the control unit 52 determines whether the voltage value V is within the range of voltage value Va or greater and voltage value Vb or less (S202). In this embodiment, voltage value Va and voltage value Vb correspond to the "thresholds" of the present invention, respectively.

[0071] If the voltage value V is in the range of voltage value Va or greater and voltage value Vb or less (S202: YES), the control unit 52 outputs a first signal as the thread status signal (S203). If the voltage value V is less than voltage value Va, or if the voltage value V is higher than voltage value Vb (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.

[0072] In Modification 1, the control unit 52 outputs a thread state signal based on the relationship between the voltage value V generated on the pivot guide 61 due to static electricity generated on the pivot guide 61 and the threshold voltage values ​​Va and Vb. This makes it possible to detect whether the state of the thread Y on the pivot guide 61 is in a predetermined state based on the thread state signal.

[0073] In Modification 2, the electrostatic charge detection circuit 51 detects the current generated in the pivot guide 61 due to the electrostatic charge generated in the pivot guide 61 and outputs a signal corresponding to the current value I. Here, the larger the amount of electrostatic charge generated in the pivot guide 61, the larger the current value I. In Modification 1, the current value I corresponds to the "value of the parameter related to the amount of electrostatic charge" of the present invention.

[0074] The control unit 52 then outputs a current state signal by processing each of the multiple electrostatic quantity detection circuits 51 according to the flowchart in Figure 5(b). In more detail, the control unit 52 first obtains the current value I based on the signal output from the electrostatic quantity detection circuit 51 (S301).

[0075] Next, the control unit 52 determines whether the current value I is within the range of current value Ia or more and current value Ib or less (S302). In Modification 2, current value Ia and current value Ib correspond to the "threshold" of the present invention, respectively.

[0076] If 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 the thread status signal (S303). If the current value I is less than current value Ia, or if the current value I is higher than current value Ib (S302: NO), the control unit 52 outputs a second signal as the thread status signal (S304). After the output of the thread status signals in S303 and S304, the process returns to S301.

[0077] In the modified example 2, the control unit 52 outputs a thread state signal based on the relationship between the current value I of the current generated in the pivot guide 61 due to static electricity generated in the pivot guide 61 and the threshold current values ​​Ia and Ib. This makes it possible to detect whether the state of the thread Y in the pivot guide 61 is in a predetermined state based on the thread state signal.

[0078] Furthermore, a thread state signal may be output based on the relationship between the values ​​of parameters related to the amount of static electricity generated in the pivot guide 61 and threshold values, other than the maximum change amount ΔE of the amount of static electricity generated in the pivot guide 61, the voltage value V of the voltage generated in the pivot guide 61 due to the static electricity generated in the pivot guide 61, and the current value I of the current generated in the pivot guide 61 due to the static electricity generated in the pivot guide 61.

[0079] Furthermore, a thread state signal may be output based on the difference in the amount of static electricity between multiple support guides 61. For example, in modified example 3, the static electricity detection circuit 51 outputs a signal corresponding to the amount of static electricity generated on the support guide 61. The control unit 52 then outputs a thread state signal by processing each of the multiple static electricity detection circuits 51 according to the flowchart in Figure 6.

[0080] To explain in detail, the control unit 52 first calculates the static electricity difference Ed, which is the difference between the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 and the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for the adjacent pivot guide 61 (S401).

[0081] At this time, the electrostatic charge detection circuit 51 provided for the foremost pivot guide 61 calculates the difference between the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 and the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 adjacent to the rear of the pivot guide 61, as the electrostatic charge difference Ed.

[0082] Furthermore, for the electrostatic charge detection circuit 51 provided for the rearmost pivot guide 61, the difference between the electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the said pivot guide 61 and the electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 adjacent to the front of the said pivot guide 61 is calculated as the electrostatic charge difference Ed.

[0083] Furthermore, for the electrostatic charge detection circuits 51 provided for pivot guides 61 other than the foremost pivot guide 61 and the rearmost pivot guide 61, the difference between the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 and the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 adjacent to the front or rear of the pivot guide 61 is calculated as the electrostatic charge difference Ed. Alternatively, for example, the average value of the difference between the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 and the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 adjacent to the front of the pivot guide 61, and the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the pivot guide 61 adjacent to the rear of the pivot guide 61 may be calculated as the electrostatic charge difference Ed.

[0084] Next, the control unit 52 determines whether the electrostatic charge difference Ed is less than or equal to the threshold Eda (S402). If the electrostatic charge difference Ed is less than or equal to the threshold Eda (S402: YES), the control unit 52 outputs a first signal as the thread state signal (S403). If the electrostatic charge difference Ed is greater than the threshold Eda (S402: NO), the control unit 52 outputs a second signal as the thread state signal (S404). After the output of the thread state signals in S403 and S404, the process returns to S401.

[0085] In modified example 3, when multiple pivot guides 61 are provided, the control unit 52 outputs a thread state signal based on the difference between the amount of static electricity in one pivot guide 61 and the amount of static electricity in another pivot guide 61. This makes it possible to detect whether the state of the thread Y in the pivot guide 61 is in a predetermined state based on the thread state signal.

[0086] Furthermore, as in Modification 3, when multiple support guides 61 are arranged in a row, the difference in the amount of static electricity at each support guide 61 from the amount of static electricity at the adjacent support guide 61 is likely to be small when the state of the thread Y at all of the support guides 61 is the same. When the state of the thread Y at a certain support guide 61 changes, the difference in the amount of static electricity at that support guide 61 from the amount of static electricity at the adjacent support guide 61 is likely to increase. Therefore, in Modification 3, the control unit 52 outputs a thread state signal based on the difference in the amount of static electricity at each support guide 61 from the amount of static electricity at the adjacent support guide 61. This makes it possible to detect whether the state of the thread Y at each support guide 61 is in a predetermined state based on the thread state signal.

[0087] Furthermore, in the modified example 3, the difference between the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for each support guide 61 and the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for support guides 61 other than the adjacent support guide 61 may be calculated as the static electricity difference Ed. In this case, the multiple traverse devices 30 having support guides 61 may or may not be arranged in a single row.

[0088] Furthermore, in the above-described embodiment, the multiple support guides 61 are conductive or semiconductive, the slider 67 supporting the multiple support guides 61 is conductive, and each support guide 61 and slider 67 are insulated by an insulating member 69. However, the embodiment is not limited to this.

[0089] In Modification 4, each of the multiple pivot guides 61 is semiconductive. On the other hand, the slider 67 is conductive, as in the embodiment described above. Furthermore, in Modification 4, as shown in Figure 7, there is no insulating member 69 (see Figure 3(a)) between each pivot guide 61 and the protruding portion 67A of the slider 67, and each pivot guide 61 is in direct contact with the protruding portion 67A of the slider 67, thus providing electrical conductivity between each pivot guide 61 and the slider 67.

[0090] Here, from the viewpoint of detecting the state of the thread Y based on the amount of static electricity generated in the pivot guide 61, it is preferable that the amount of static electricity generated in the pivot guide 61 due to contact between the thread Y and the pivot guide 61 is large. On the other hand, considering the effect of the static electricity generated in the pivot guide 61 on the thread Y, it is preferable that the amount of static electricity generated in the pivot guide 61 is not too large.

[0091] In Modification 4, the semiconducting pivot guide 61 is electrically connected to the conductive slider 67. This prevents the amount of static electricity generated in the pivot guide 61 from becoming too large, as current flows from the pivot guide 61 to the slider 67 when static electricity is generated in the pivot guide 61. On the other hand, because the pivot guide 61 is semiconducting, current does not flow as easily from the pivot guide 61 to the slider 67 compared to when the pivot guide 61 is conductive. Therefore, the amount of static electricity generated in the pivot guide 61 due to contact between the thread Y and the pivot guide 61 does not become too small, and the state of the thread Y can be detected based on the amount of static electricity generated in the pivot guide 61.

[0092] Furthermore, in the above example, the entire pivot guide 61 was conductive or semiconductive, but this is not limited to this. Only a portion of the pivot guide 61, including the part in contact with the thread Y, may be conductive or semiconductive. Even in this case, the electrostatic charge detection circuit 51 can output a signal corresponding to the amount of electrostatic charge generated in the pivot guide 61 due to contact with the thread Y.

[0093] In this case, the pivot guide 61 may have a portion that is conductive, including the portion that contacts the thread Y, and the aforementioned portion of the pivot guide 61 may be insulated from the slider 67. Alternatively, the pivot guide 61 may have a portion that is semiconductive, including the portion that contacts the thread Y, and the aforementioned portion of the pivot guide 61 may be electrically conductive from the slider 67.

[0094] Furthermore, in the above example, the pivot guides 61 of the multiple traverse devices 30 were supported by individual sliders 67, and these sliders 67 were movable in the front-rear direction along the guide rail 68, but this is not limited to this. For example, the pivot guides 61 of the multiple traverse devices 30 may be supported by a fixed support member that does not move in the front-rear direction. In this case, the pivot guides 61 of the multiple traverse devices 30 may be supported by individual support members, or two or more pivot guides 61 may be supported by a common support member. In the above example, the support member supporting the pivot guide 61 was conductive, but the support member supporting the pivot guide 61 may be insulating.

[0095] Furthermore, in the above example, the control unit 52 outputs a thread status signal indicating whether or not the state of the thread Y in the pivot guide 61 is in a predetermined state, but it is not limited to this. The control unit 52 may also output a thread status signal indicating a state of thread Y other than whether or not the state of thread Y in the pivot guide 61 is in a predetermined state, based on the signal output from the electrostatic quantity detection circuit 51. For example, the control unit 52 may output a thread status signal indicating the magnitude of the tension of thread Y in the pivot guide 61, based on the signal output from the electrostatic quantity detection circuit 51.

[0096] Furthermore, in the above example, the spinning reel 1 was equipped with a control unit 52 that outputs a yarn state signal indicating the state of the yarn Y based on the signal output from the electrostatic quantity detection circuit 51, but this is not limited to this. For example, the spinning reel does not need to be equipped with a control unit 52. In addition, the multiple electrostatic quantity detection circuits 51 of the spinning reel may be connected to an external processing device such as a PC, and the state of the yarn Y may be detected in this processing device based on the signals output from the electrostatic quantity detection circuits 51.

[0097] Furthermore, in the above example, the pivot guide 61 was configured in a cylindrical shape and the thread Y was in contact with the outer surface of the pivot guide 61, but this is not limited to this. The pivot guide 61 may have another structure that is capable of supporting the thread Y in contact with the thread Y so as to become the pivot point of the traverse swing.

[0098] Furthermore, although the present invention was applied to a spinning reel that winds a running yarn Y to form a package in the above example, it is not limited to this. The present invention can also be applied to yarn winding devices other than spinning reels that are equipped with a traverse device having a pivot guide. In this case, the yarn winding device is not limited to having multiple traverse devices and winding multiple yarns, but may have only one traverse device and wind a single yarn. [Explanation of Symbols]

[0099] 1: Spinning and winding machine (yarn winding device) 30: Traverse device 31: Winding device 51: Electrostatic charge detection circuit (electrostatic charge detection unit) 52: Control Unit 61: Auxiliary point guide 67: Slider (support member) 68: Insulating material

Claims

1. A yarn winding device comprising a traverse device for traversing a running yarn, and for winding the yarn traversed by the traverse device onto a bobbin, The traverse device has a pivot guide that contacts the thread and serves as a pivot point for the traverse motion, The pivot guide has at least the portion in contact with the thread that is conductive or semiconductive. A thread winding device characterized by comprising an electrostatic charge detection unit for detecting the amount of electrostatic charge generated at the pivot guide.

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

3. The control unit, The yarn winding device according to claim 2, characterized in that it outputs the yarn state signal based on the relationship between the value of a parameter related to the amount of static electricity in the pivot guide detected by the static electricity amount detection unit and a threshold value.

4. The thread winding device according to claim 3, characterized in that the value of the parameter is the maximum value of the change in the amount of static electricity at the pivot guide detected by the static electricity amount detection unit.

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

6. The system comprises a plurality of traverse devices, each individually provided for a plurality of threads, The electrostatic charge detection unit detects the electrostatic charge at each of the multiple support guides of the multiple traverse devices, The control unit, The yarn winding device according to claim 2, characterized in that it outputs the yarn state signal based on the difference between the amount of static electricity at each pivot guide detected by the static electricity amount detection unit and the amount of static electricity at a pivot guide other than the pivot guide in question.

7. Multiple of the aforementioned support guides are arranged in a row, The control unit, The yarn winding device according to claim 6, characterized in that it outputs the yarn state signal based on the difference between the amount of static electricity at each pivot guide detected by the static electricity amount detection unit and the amount of static electricity at the adjacent pivot guide.

8. A support member having conductivity and supporting the pivot guide is provided, The thread winding device according to any one of claims 1 to 7, characterized in that the pivot guide and the support member are insulated from each other.

9. The aforementioned pivot guide is semiconductive, A support member having conductivity and supporting the pivot guide is provided, The thread winding device according to any one of claims 1 to 7, characterized in that the pivot guide and the support member are electrically connected.

Images