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 guide, the guide rail 63 that guides the traversing thread is conductive or semiconductive at least in the portion that contacts the thread. The electrostatic charge detection circuit 51 outputs a signal corresponding to the amount of electrostatic charge generated on the guide rail 63 by the contact between the thread and the guide rail 63. 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 on the guide rail 63 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 first signal indicating that the state of the thread on the guide rail 63 is in a predetermined state do not have The first one that shows 2 letters Output the number (S104).

Description

Technical Field

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

Background Art

[0002] In the spinning and winding machine of Patent Document 1, a plurality of yarns are wound around a bobbin while being traversed with a fulcrum guide as a fulcrum by a traverse guide.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, in a spinning and winding machine such as Patent Document 1, in order to achieve stable yarn winding, the yarn tension is adjusted. At this time, although it is necessary to detect the yarn tension, since a technique for stably and continuously detecting the tension of the yarn moving by traverse has not been established, conventionally, for example, a sensor is provided for the yarn portion upstream of the fulcrum guide to detect the tension. However, since this sensor is far from the bobbin around which the yarn is wound, the tension detected by this sensor may be significantly different from the tension of the yarn immediately before being wound around the bobbin. Therefore, it is required to detect the tension of the traversed yarn immediately before being wound around the bobbin.

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

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 guide rail that guides the yarn in contact with the yarn and traversing the yarn, and the guide rail has at least the portion in contact with the yarn that is conductive or semiconductive, and is equipped with an electrostatic amount detection unit that detects the amount of electrostatic charge generated on the guide rail.

[0007] According to the present invention, the state of the yarn being spun can be detected based on the detection result of the amount of static electricity generated on the guide rail.

[0008] 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 on the guide rail based on the amount of static electricity on the guide rail detected by the static electricity amount detection unit.

[0009] According to the present invention, the control unit outputs a yarn state signal indicating the state of the yarn based on the amount of static electricity detected in the guide rail by the static electricity detection unit. This makes it possible to detect the state of the yarn being spun based on the yarn state signal.

[0010] 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 guide rail detected by the electrostatic amount detection unit and a threshold value.

[0011] According to the present invention, the control unit outputs a yarn state signal based on the relationship between the value of a parameter related to the amount of static electricity in the guide rail detected by the static electricity amount detection unit and a threshold value. This makes it possible to detect whether or not the yarn being spun is in a predetermined state based on the yarn state signal.

[0012] The yarn winding device according to the fourth invention is the yarn winding device according to the third invention in which the value of the parameter is the maximum value of the change in the amount of static electricity in the guide rail detected by the amount of static electricity detection unit.

[0013] According to the present invention, the control unit outputs a yarn state signal based on the relationship between the maximum value of the change in the amount of static electricity detected in the guide rail by the static electricity detection unit and a threshold value. This makes it possible to detect whether or not the yarn being spun is in a predetermined state based on the yarn state signal.

[0014] The yarn winding device according to the fifth invention is the yarn winding device according to the third invention, wherein the electrostatic quantity detection unit detects the electrostatic quantity by detecting the voltage or current generated in the guide rail due to the electrostatic electricity generated in the guide rail, and the value of the parameter is the voltage or current value detected by the electrostatic quantity detection unit.

[0015] According to the present invention, the control unit outputs a yarn state signal based on the relationship between the magnitude of the voltage or current generated in the guide rail due to the static electricity detected by the electrostatic quantity detection unit and a threshold value. This makes it possible to detect whether the yarn being spun is in a predetermined state based on the yarn state signal.

[0016] 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 amount of electrostatic charge in each of the plurality of guide rails of the plurality of traverse devices, and the control unit outputs the yarn state signal based on the difference between the amount of electrostatic charge in each guide rail detected by the electrostatic amount detection unit and the amount of electrostatic charge in a guide rail other than that guide rail.

[0017] According to the present invention, when multiple guide rails are provided and an electrostatic charge detection unit detects the amount of electrostatic charge in each guide rail, the control unit outputs a yarn state signal based on the difference between the amount of electrostatic charge in one guide rail and the amount of electrostatic charge in another guide rail. This makes it possible to detect whether the yarn being spun is in a predetermined state based on the yarn state signal.

[0018] The yarn winding device according to the seventh invention is the yarn winding device according to the sixth invention, wherein a plurality of the guide rails 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 guide rail detected by the static electricity amount detection unit and the amount of static electricity at the adjacent guide rail.

[0019] When multiple guide rails are arranged in a row, the difference in static electricity between each guide rail and the adjacent guide rail is likely to be small when the state of the yarn is the same across all the guide rails. When the state of the yarn changes across a particular guide rail, the difference in static electricity between that guide rail and the adjacent guide rail is likely to increase. Therefore, in this invention, the control unit outputs a yarn state signal based on the difference between the static electricity of each guide rail and the static electricity of the adjacent guide rail. This makes it possible to detect whether the yarn being spun is in a predetermined state based on the yarn state signal.

[0020] The yarn winding device according to the eighth invention is a yarn winding device according to any of the first to seventh inventions, further comprising a support member which is conductive and supports the guide rail, wherein the guide rail and the support member are insulated from each other.

[0021] According to the present invention, since the guide rail having conductivity or semiconduction is insulated from the conductive support member, when static electricity is generated in the guide rail, no current flows from the guide rail to the support member. As a result, the amount of static electricity generated in the guide rail due to the contact between the yarn and the guide rail increases, and it becomes easy to detect the state of the yarn being shaken based on the amount of static electricity generated in the guide rail.

[0022] The yarn winding device according to the ninth invention is the yarn winding device according to any one of the first to seventh inventions, further comprising a support member that supports the guide rail, wherein the guide rail has semiconduction and conductivity, and the guide rail and the support member are electrically connected.

[0023] From the viewpoint of detecting the state of the yarn being shaken based on the amount of static electricity generated in the guide rail, it is preferable that the amount of static electricity generated in the guide rail due to the contact with the yarn is large. On the other hand, considering the influence of the static electricity generated in the guide rail on the yarn, it is preferable that the amount of static electricity generated in the guide rail is not too large. In the present invention, the guide rail having semiconduction is electrically connected to the conductive support member. Thereby, when static electricity is generated in the guide rail, current flows from the guide rail to the support member, so that the amount of static electricity generated in the guide rail does not become too large. On the other hand, since the guide rail has semiconduction, compared with the case where the guide rail has conductivity, it is difficult for current to flow from the guide rail to the support member. Therefore, the amount of static electricity generated in the guide rail due to the contact with the yarn does not become too small, and the state of the yarn being shaken can be detected based on the amount of static electricity generated in the guide rail.

Effect of the Invention

[0024] According to the present invention, the state of the yarn being shaken can be detected based on the detection result of the amount of static electricity generated in the guide rail.

Brief Description of the Drawings

[0025] [Figure 1] It is a schematic configuration diagram of a plurality of oil supply guides and a stretching unit of a spinning and winding machine according to an embodiment of the present invention. [Figure 2] It is a schematic configuration diagram of a take-up unit and a winding unit of a spinning and winding machine according to an embodiment of the present invention. [Figure 3] (a) is a diagram for explaining a traverse guide or the like when the thread is moved to the rear side, and (b) is a diagram for explaining a traverse guide or the like when the thread is moved to the front side. [Figure 4] (a) is a block diagram showing an electrical connection relationship among a guide rail, an electrostatic quantity detection circuit, and a control unit according to an embodiment of the present invention, and (b) is a flowchart showing a process flow for outputting a thread state signal in the embodiment of the present invention. [Figure 5] (a) is a flowchart showing a process flow for outputting a thread state signal in Modified Example 1, and (b) is a flowchart showing a process flow for outputting a thread state signal in Modified Example 2. [Figure 6] It is a flowchart showing a process flow for outputting a thread state signal in Modified Example 3. [Figure 7] It is a figure corresponding to Fig. 3(a) in Modified Example 4.

Embodiments for Carrying Out the Invention

[0026] Hereinafter, preferred embodiments of the present invention will be described.

[0027] <Schematic Configuration of 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.

[0028] <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.

[0029] 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.

[0030] <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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The guide roller 14 is a roller whose axial direction is parallel to the front-rear direction and is positioned in the thread path immediately downstream of the thread guide unit 9D. Multiple threads Y aligned in the front-rear direction by multiple thread guides 45 of the thread guide unit 9D are sent to the take-up section 4 by the guide roller 14.

[0041] <Collection Department> As shown in Figure 2, the take-up section 4 includes a godet roller 21 and a godet roller 22.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] <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.

[0046] 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 separated from each other in the front-to-back direction when winding the thread Y and a position that is moved closer to the front when threading.

[0047] 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.

[0048] The traverse guide 62 will now be described in detail. As shown in Figures 3(a) and 3(b), the traverse guide 62 has two traverse vanes 62A and 62B. Note that the vertical direction and the direction perpendicular to the plane of the paper in Figures 3(a) and 3(b) are inclined directions with respect to the vertical and left-right directions, respectively.

[0049] The traverse blades 62A and 62B are rotatably supported on a common rotation axis 62C that extends along the left-right direction. Traverse blade 62A has three blade sections 62A1 arranged approximately 120° apart from each other with respect to the rotation axis 62C. Traverse blade 62B has three blade sections 62B1 arranged approximately 120° apart from each other with respect to the rotation axis 62C. Furthermore, traverse blade 62A is rotated counterclockwise when viewed from the front side in the direction perpendicular to the plane of the paper in Figures 3(a) and (b) by rotational drive around the rotation axis 62C by a motor (not shown). On the other hand, traverse blade 62B is rotated clockwise when viewed from the front side in the direction perpendicular to the plane of the paper in Figures 3(a) and (b) by rotational drive around the rotation axis 62C by a motor (not shown).

[0050] As a result, the thread Y is moved to the rear by the blade portion 62A1 of the traverse blade 62A, as shown in Figure 3(a), and moved to the front by the blade portion 62B1 of the traverse blade 62B, as shown in Figure 3(b). In the traverse device 30, the movement of the thread Y to the rear by the blade portion 62A1 of the traverse blade 62A and the movement of the thread Y to the front by the blade portion 62B1 of the traverse blade 62B occur alternately, causing the thread Y to swing in the front-back direction with the pivot guide 61 as the pivot point.

[0051] Furthermore, each traverse guide 62 is provided with a guide rail 63. The guide rail 63 is a plate-shaped member. Multiple guide rails 63 provided for multiple traverse guides 62 are arranged in a single row in the front-to-back direction. Each guide rail 63 extends along the front-to-back direction and has an arc-shaped edge 63A that is convex outwards from the guide rail 63. The guide rail 63 guides the yarn Y, which is traversed in the front-to-back direction by the blade portion 62A1 of the traverse blade 62A and the blade portion 62B1 of the traverse blade 62B, along the edge 63A. In addition, the guide rail 63 is conductive or semi-conductive.

[0052] In this embodiment, having conductivity means, for example, a metal, with a volume resistivity of 10 -8 It must be made of a material with a volume resistivity of Ω·cm or less. Furthermore, being semiconductive means, for example, zirconia, which has a volume resistivity of 10 -7 Ω·cm or less and 10 -8 The material must have a capacitance greater than Ω·cm. In both cases, whether the guide rail 63 is conductive or semiconductive, an electric current flows through the guide rail 63 due to static electricity generated by contact between the running thread Y and the guide rail 63. However, when the guide rail 63 is semiconductive, the magnitude of the current is smaller than when the guide rail 63 is conductive.

[0053] Furthermore, the multiple guide rails 63 of the multiple traverse devices 30 are fixed to a common frame 64 that extends in the front-rear direction. The frame 64 is conductive. In addition, an insulating member 65 having insulating properties is placed between each guide rail 63 and the frame 64. Thus, each guide rail 63 and the frame 64 are insulated by the insulating member 65. Here, in this embodiment, having insulating properties means, for example, a resin or the like with a volume resistivity of 10 8 It is made of a material with a density of Ω·cm or greater. In this embodiment, the frame 64 corresponds to the "support member" of the present invention.

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

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

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

[0057] <Detection of thread condition on guide rails> Next, we will describe how to detect the state of the thread Y in the multiple guide rails 63 of the multiple traverse devices 30.

[0058] 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 guide rails 63 of the plurality of traverse devices 30 and are electrically connected to the corresponding guide rails 63. The electrostatic quantity detection circuits 51 output a signal with a value corresponding to the amount of electrostatic charge generated on the guide rails 63. 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.

[0059] The control unit 52 outputs a thread status signal for each of the multiple electrostatic quantity detection circuits 51, based on the signal output from the electrostatic quantity detection circuit 51, indicating whether the thread Y on the guide rail 63 is in a predetermined state. Here, the state of the thread Y on the guide rail 63 being in a predetermined state means, for example, that the tension of the thread Y on the guide rail 63 is within the normal range, and that the thread Y is not broken near the guide rail 63. Conversely, the state of the thread Y on the guide rail 63 not being in a predetermined state means, for example, that the tension of the thread Y on the guide rail 63 is outside the normal range, and that the thread Y is broken near the guide rail 63.

[0060] 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.

[0061] 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.

[0062] 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 on the guide rail 63 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 on the guide rail 63 is not in a predetermined state (S104). After the output of the thread state signals in S103 and S104, the process returns to S101.

[0063] <Effects> In this embodiment, the state of the yarn Y on the guide rail 63, that is, the state of the yarn Y being spun, can be detected based on the detection result of the amount of static electricity generated on the guide rail 63 due to contact between the yarn Y and the guide rail 63.

[0064] Furthermore, in this embodiment, the control unit 52 outputs a thread state signal indicating the state of the thread Y based on a signal output by the electrostatic charge detection circuit 51, which corresponds to the amount of electrostatic charge generated on the guide rail 63. 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 on the guide rail 63, and the threshold ΔEa, the control unit 52 outputs a thread state signal indicating whether or not the state of the thread Y on the guide rail 63 is in a predetermined state. As a result, it is possible to detect whether or not the state of the thread Y on the guide rail 63 is in a predetermined state based on the thread state signal.

[0065] Furthermore, in this embodiment, the guide rail 63 is conductive or semiconductive, and the frame 64 supporting the guide rail 63 is conductive, while the guide rail 63 and the frame 64 are insulated by an insulating member 65. Therefore, no current flows from the guide rail 63 to the frame 64. As a result, the amount of static electricity generated on the guide rail 63 due to contact between the yarn Y and the guide rail 63 becomes large, and the state of the spun yarn Y can be easily detected based on the amount of static electricity generated on the guide rail 63.

[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 generated on the guide rail 63 due to contact between the thread Y and the guide rail 63, but it is not limited to this.

[0068] In Modification 1, the electrostatic charge detection circuit 51 detects the voltage generated on the guide rail 63 due to the electrostatic charge generated on the guide rail 63 by the contact between the thread Y and the guide rail 63, and outputs a signal corresponding to the voltage value V. Here, the greater the amount of electrostatic charge generated on the guide rail 63 by the contact between the thread Y and the guide rail 63, the greater the voltage value V generated on the guide rail 63 due to this electrostatic charge. In Modification 1, the above 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 the modified example 1, the voltage value Va and the voltage value Vb correspond to the "threshold" 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 the modified example 1, the control unit 52 outputs a yarn status signal based on the relationship between the voltage value V generated on the guide rail 63 due to static electricity generated on the guide rail 63 and the threshold voltage values ​​Va and Vb. This makes it possible to detect whether the state of the spun yarn Y is in a predetermined state based on the yarn status signal.

[0073] In Modified Example 2, the electrostatic charge detection circuit 51 detects the current generated in the guide rail 63 due to the electrostatic charge generated in the guide rail 63 by the contact between the thread Y and the guide rail 63, and outputs a signal corresponding to the current value I. Here, the greater the amount of electrostatic charge generated in the guide rail 63 by the contact between the thread Y and the guide rail 63, the greater the current value I generated in the guide rail 63 due to this electrostatic charge. In Modified Example 2, the above current value I corresponds to the "value of the parameter related to the amount of electrostatic charge" in 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 yarn state signal based on the relationship between the current value I generated by the static electricity on the guide rail 63 and the threshold current values ​​Ia and Ib. This makes it possible to detect whether the state of the spun yarn Y is in a predetermined state based on the yarn 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 guide rail 63 and threshold values, other than the maximum change amount ΔE of the amount of static electricity generated in the guide rail 63, the voltage value V of the voltage generated in the guide rail 63 due to the static electricity generated in the guide rail 63, and the current value I of the current generated in the guide rail 63 due to the static electricity generated in the guide rail 63.

[0079] Furthermore, a thread state signal may be output based on the difference in the amount of static electricity between multiple guide rails 63. 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 guide rail 63 by contact between the thread Y and the guide rail 63. 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 guide rail 63 (S401).

[0081] At this time, the electrostatic charge detection circuit 51 provided for the foremost guide rail 63 calculates the difference between the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the said guide rail 63 and the amount of electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the guide rail 63 adjacent to the rear of the said guide rail 63, and this difference is called the electrostatic charge difference Ed.

[0082] Furthermore, for the electrostatic charge detection circuit 51 provided for the rearmost guide rail 63, the difference between the electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the said guide rail 63 and the electrostatic charge indicated by the signal output from the electrostatic charge detection circuit 51 provided for the guide rail 63 adjacent to the front of the said guide rail 63 is calculated as the electrostatic charge difference Ed.

[0083] Furthermore, for guide rails 63 other than the foremost guide rail 63 and the rearmost guide rail 63, the difference between the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for the said guide rail 63 and the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for the guide rail 63 adjacent to the front or rear of the said guide rail 63 is calculated as the static electricity difference Ed. Alternatively, the average value of the difference between the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for the said guide rail 63 and the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for the guide rail 63 adjacent to the front of the said guide rail 63, and the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for the guide rail 63 adjacent to the rear of the said guide rail 63 may be calculated as the static electricity 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, the control unit 52 outputs a yarn state signal based on the difference between the amount of static electricity in each guide rail 63 and the amount of static electricity in another guide rail 63. This makes it possible to detect whether the state of the spun yarn Y is in a predetermined state based on the yarn state signal.

[0086] Furthermore, as in Modification 3, when multiple guide rails 63 are arranged in a row, the difference in the amount of static electricity in each guide rail 63 from the amount of static electricity in the adjacent guide rail 63 is likely to be small when the state of the yarn Y in the multiple guide rails 63 is the same. Then, when the state of the yarn Y changes in a certain guide rail 63, the difference in the amount of static electricity in that guide rail 63 from the amount of static electricity in the adjacent guide rail 63 is likely to increase. Therefore, in Modification 3, the control unit 52 outputs a yarn state signal based on the difference in the amount of static electricity in each guide rail 63 from the amount of static electricity in the adjacent guide rail 63. This makes it possible to detect whether the state of the spun yarn Y is in a predetermined state based on the yarn 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 guide rail 63 and the amount of static electricity indicated by the signal output from the static electricity detection circuit 51 provided for guide rails 63 other than the adjacent guide rail 63 may be calculated as the static electricity difference Ed. In this case, the multiple traverse devices 30 having guide rails 63 may or may not be arranged in a single line.

[0088] Furthermore, in the above-described embodiment, the multiple guide rails 63 are conductive or semiconductive, the frame 64 supporting the multiple guide rails 63 is conductive, and each guide rail 63 and the frame 64 are insulated by an insulating member 65. However, the embodiment is not limited to this.

[0089] In Modification 4, each of the multiple guide rails 63 is semiconductive. On the other hand, the frame 64 is conductive, as in the embodiment described above. Furthermore, in Modification 4, as shown in Figure 7, no insulating member 65 (see Figures 3(a) and (b)) is placed between each guide rail 63 and the frame 64, and each guide rail 63 is in contact with the frame 64, thus providing electrical conductivity between each guide rail 63 and the frame 64.

[0090] Here, from the viewpoint of detecting the state of the spun yarn Y based on the amount of static electricity generated on the guide rail 63, it is preferable that the amount of static electricity generated on the guide rail 63 due to contact between the yarn Y and the guide rail 63 is large. On the other hand, considering the effect of the static electricity generated on the guide rail 63 on the yarn Y, it is preferable that the amount of static electricity generated on the guide rail 63 is not too large.

[0091] In Modification 4, the semiconducting guide rail 63 is electrically connected to the conductive frame 64. This prevents the amount of static electricity generated on the guide rail 63 from becoming too large, as current flows from the guide rail 63 to the frame 64 when static electricity is generated on the guide rail 63. On the other hand, because the guide rail 63 is semiconducting, current does not flow as easily from the guide rail 63 to the frame 64 compared to the case where the guide rail 63 is conductive. Therefore, the amount of static electricity generated on the guide rail 63 due to contact between the yarn Y and the guide rail 63 does not become too small, and the state of the spun yarn Y can be detected based on the amount of static electricity generated on the guide rail 63.

[0092] Furthermore, in the above example, the entire guide rail 63 was conductive or semiconductive, but this is not limited to this. Only a portion of the guide rail 63, including the part that contacts 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 on the guide rail 63 due to contact with the thread Y.

[0093] In this case, the guide rail 63 may have a portion that is conductive or semiconductive, including the portion that contacts the thread Y, and the aforementioned portion of the guide rail 63 may be insulated from the frame 64. Alternatively, the guide rail 63 may have a portion that is semiconductive, including the portion that contacts the thread Y, and the aforementioned portion of the guide rail 63 may be electrically connected to the frame 64.

[0094] Furthermore, in the above example, the multiple guide rails 63 of the multiple traverse devices 30 were supported by a single common frame 64, but the multiple guide rails 63 of the multiple traverse devices 30 may be supported by individual support members. Alternatively, two or more of the multiple guide rails 63 of the multiple traverse devices 30 may be supported by a common support member. Also, in the above example, the support members supporting the guide rails 63 were conductive, but the support members may be insulating.

[0095] Furthermore, in the above example, the control unit 52 outputs a thread state signal indicating whether or not the state of thread Y on the guide rail 63 is in a predetermined state, but this is not limited to this. The control unit 52 may also output a thread state signal indicating a state of thread Y other than whether or not the state of thread Y on the guide rail 63 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 state signal indicating the magnitude of the tension of thread Y on the guide rail 63, 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 this processing device may perform detection of the state of the yarn Y being spun based on the signals output from the electrostatic quantity detection circuits 51.

[0097] Furthermore, in the above example, the traverse guide 62 of the traverse device 30 traverses the thread Y using two traverse blades 62A and 62B that rotate in opposite directions, but it is not limited to this. The traverse guide of the traverse device may, for example, traverse the thread Y by moving the guide on which the thread Y is hung back and forth in the forward and backward directions using a motor or the like, and the thread Y is guided by the guide rail at this time, or the thread Y may be traversed by another configuration having a guide rail.

[0098] Furthermore, while the above examples illustrate the application of the present invention to a spinning winding machine that winds up a moving yarn Y to form a package, the invention is not limited to this. The present invention can also be applied to yarn winding devices other than spinning winding machines that are equipped with a traverse device having guide rails. In this case, the yarn winding device is not limited to having multiple traverse devices and winding up multiple yarns; it may have only one traverse device and wind up 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 63: Guide rail 64: Frame (support member) 65: 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 guide rail that guides the yarn as it is traversed in contact with the yarn, The guide rail 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 on the guide rail.

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 on the guide rail based on the amount of static electricity on the guide rail 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 guide rail 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 in the guide rail 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 guide rail due to the electrostatic charge generated in the guide rail. The yarn winding device according to claim 3, characterized in that the value of the parameter is the value of 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 amount of electrostatic charge in each of the multiple guide rails 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 in each guide rail detected by the static electricity amount detection unit and the amount of static electricity in a guide rail other than the guide rail in question.

7. Multiple of the aforementioned guide rails 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 in each guide rail detected by the static electricity amount detection unit and the amount of static electricity in the adjacent guide rail.

8. A support member having conductivity and supporting the guide rail, The thread winding device according to any one of claims 1 to 6, characterized in that the guide rail and the support member are insulated from each other.

9. The guide rail is semiconductive, A support member having conductivity and supporting the guide rail is provided, The thread winding device according to any one of claims 1 to 6, characterized in that the guide rail and the support member are electrically connected.

Images