Winding system and winding method

Abstract

To provide a winding system and a winding method which achieve both improvement of safety and improvement of working efficiency, in a rotor.SOLUTION: A sensor can detect a position of a hand of an operator, due to a difference of colors between the hand of the operator and a product. When the sensor detects that at least a part of the hand of the operator is in an emergency stop area, a drive part stops rotation of a winding body. When the sensor detects that the hand of the operator is in an alarm area, an alarm gives an alarm to the operator.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a winding system and a winding method. [Background technology]

[0002] Patent Document 1 discloses a safety device that detects dangerous events such as a worker being caught in a rotating object. The safety device disclosed in Patent Document 1 detects the area around the worker's feet and determines whether the worker is in a safe area, an area requiring caution, or an area where the rotating object needs to be stopped immediately. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-234481 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to reduce accidents such as workers getting caught in rotating objects, it is necessary to detect the part of the body of the worker that is closest to the rotating object. On the other hand, if the safety device issues an unnecessary warning or stops the rotating object more than necessary, it will cause a decrease in work efficiency.

[0005] An object of the present disclosure is to provide a winding system and a winding method for a rotating body that achieve both improved safety and improved work efficiency. [Means for solving the problem]

[0006] A winding system according to one aspect of the present disclosure includes a winding body, a winding device including a drive unit that rotates the winding body and winds a product around the winding body, and a safety device, wherein the safety device includes a sensor capable of detecting color differences within a predetermined detection range that includes the product, and an alarm that can issue a warning to a worker working on the winding device, wherein the detection range includes an emergency stop area that includes a winding point where the product is wound onto the winding body, and an alarm area adjacent to the emergency stop area, and the sensor can detect the position of the worker's hand based on the color difference between the worker's hand and the product, and when the sensor detects that at least a part of the worker's hand is in the emergency stop area, the drive unit stops the rotation of the winding body, When the sensor detects that the worker's hand is in the warning area, the alarm issues a warning to the worker. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a winding system and a winding method for a rotating body that achieve both improved safety and improved work efficiency. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 illustrates a winding system according to a first embodiment. [Figure 2] FIG. 2 illustrates a predetermined detection range detected by the sensor. [Figure 3] FIG. 3 illustrates a winding system according to a second embodiment. [Figure 4] FIG. 4 illustrates a winding system according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Description of Embodiments of the Present Disclosure) First, embodiments of the present disclosure will be described below. (1) A winding system according to one aspect of the present disclosure includes a winding body, a winding device including a drive unit that rotates the winding body and winds a product around the winding body, and a safety device, wherein the safety device includes a sensor capable of detecting color differences within a predetermined detection range that includes the product, and an alarm capable of issuing an alarm to a worker working on the winding device, wherein the detection range includes an emergency stop area that includes a winding point where the product is wound onto the winding body, and an alarm area adjacent to the emergency stop area, wherein the sensor can detect the position of the worker's hand based on the color difference between the worker's hand and the product, and when the sensor detects that at least a part of the worker's hand is in the emergency stop area, the drive unit stops the rotation of the winding body, and when the sensor detects that the worker's hand is in the alarm area, the alarm issues an alarm to the worker.

[0010] The winding system configured as described above can detect the worker's hands. When the worker's hands are in the warning area, a warning is issued indicating that caution is required. When the worker's hands are in the emergency stop area, rotation of the winding body is stopped as it is an actual danger. In this way, safety is determined based on the worker's hands, which are likely to be the body parts closest to the winding device during work, so it is more accurately determined whether to issue a warning or stop rotation of the winding body. This makes it possible to provide a winding system that achieves both improved safety and improved work efficiency.

[0011] (2) The winding system according to (1) above may have a light-emitting unit capable of emitting visible light to make the boundary between the warning area and the emergency stop area visible.

[0012] According to the above configuration, the warning area and the emergency stop area are separated by visible light, so that the worker can easily recognize the limit area where he or she can approach and work, making work more efficient.

[0013] (3) In the winding system according to (1) or (2) above, the sensor may include a first sensor capable of detecting color in a first detection range and a second sensor capable of detecting color in a second detection range, the first detection range including a first alarm area and a first emergency stop area closer to the winding point than the first alarm area, the second detection range including a second alarm area and a second emergency stop area closer to the winding point than the second alarm area, when at least one of the first sensor and the second sensor detects that at least a part of the operator's hand is in at least one of the first emergency stop area and the second emergency stop area, the drive unit may stop rotation of the winding body, and when at least one of the first sensor and the second sensor detects that the operator's hand is in at least one of the first alarm area and the second alarm area, the alarm may sound an alarm to the operator.

[0014] Depending on the type of winding body and the way the product is wound onto the winding body, the working area may change as the winding body rotates. According to the above configuration, by installing the first sensor and the second sensor, it is possible to issue a warning or stop the rotation of the winding body depending on the different working areas.

[0015] (4) In any of the winding systems according to (3) above, the central axis of the winding body may be displaced in a first direction from a first central position as the product is wound, the winding point may be displaced from the first winding point to a second winding point located in the first direction as the product is wound, the first emergency stop area may include the first winding point, and the second emergency stop area may include the second winding point.

[0016] According to the above configuration, the center of the second detection range is located at a point displaced in the first direction from the first center position, so even if the center axis of the winding body displaces as the winding of the product onto the winding body progresses, the second sensor can detect the worker's hand.

[0017] (5) In any of the winding systems according to (4) above, when the winding body is viewed from one side of the central axis of the winding body, if a line connecting the first sensor and the first winding point is defined as a first line and a line connecting the second sensor and the second winding point is defined as a second line, the normal direction at the first winding point may intersect with the first line at a smaller angle than with the second line, and the normal direction at the second winding point may intersect with the second line at a smaller angle than with the first line.

[0018] According to the above configuration, in the first detection range, the normal direction at the first wrapping point and the first line intersect at a small angle, and in the second detection range, the normal direction at the second wrapping point and the second line intersect at a small angle, so that the operator's hand can be detected more accurately in both the first detection range and the second detection range.

[0019] (6) A winding method according to one aspect of the present disclosure is a winding method for rotating a winding body to wind a product around the winding body, the method including: detecting the position of a worker's hand by a sensor based on the difference in color between the worker's hand and the product within a predetermined detection range that includes an emergency stop area including a winding point where the product is wound onto the winding body and an alarm area adjacent to the emergency stop area; stopping the rotation of the winding body when it is detected that at least a part of the worker's hand is in the emergency stop area; and issuing an alarm to the worker when it is detected that at least a part of the worker's hand is in the alarm area, wherein the worker is wearing gloves on his or her hands that are a different color from the product.

[0020] According to the above winding method, the sensor can easily detect the worker's hands in the detection range by wearing gloves of a different color than the product. When the worker's hands are in the alarm area, a warning is issued indicating that caution is required. When the worker's hands are in the emergency stop area, rotation of the winding body is stopped indicating that there is an actual danger. In this way, safety is determined based on the worker's hands, which are likely to be the closest body part to the winding device during work, so it is more accurately determined whether to issue a warning or stop rotation of the winding body. This makes it possible to provide a winding method that achieves both improved safety and improved work efficiency.

[0021] (Details of the embodiments of the present disclosure) Specific examples of winding systems and winding methods according to embodiments of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0022] In the accompanying drawings, arrow F indicates the forward direction of the illustrated structure. Arrow B indicates the rearward direction of the illustrated structure. Arrow U indicates the upward direction of the illustrated structure. Arrow D indicates the downward direction of the illustrated structure. Arrow R indicates the rightward direction of the illustrated structure. Arrow L indicates the leftward direction of the illustrated structure. These directional expressions are used for convenience of explanation and do not limit the posture or direction of the illustrated structure in actual use.

[0023] (First embodiment) 1 illustrates a winding system 100 according to a first embodiment. As illustrated in FIG. 1, the winding system 100 includes a winding device 110, a safety device 120, a control unit 130, and a light emitting device 140.

[0024] The winding device 110 includes a winding body 111 and a drive unit 112. The winding body 111 is a cylindrical member. The winding body 111 is, for example, a bobbin. The winding device 110 is capable of winding a product P around the winding body 111. The product P is, for example, an optical fiber cable, an optical fiber unit, an optical fiber core, a metal wire, a coated electric wire, or the like. At least the outer surface of the product P is colored. The angle at which the product P enters the winding body 111 is adjusted by a roller RL or the like.

[0025] The point where the product P is wound onto the winding body 111 is referred to as a winding point P0. The winding point P0 is the point where the product P sent from the roller RL comes into contact with the product P already wound onto the winding body 111.

[0026] The driving unit 112 is a member capable of rotating the winding body 111. The driving unit 112 is, for example, a motor.

[0027] The drive unit 112 is connected to the central axis of the winding body 111, and the central axis of the winding body 111 does not move as the product P is wound.

[0028] The safety device 120 includes a sensor 121 and an alarm 122. The sensor 121 is capable of detecting color differences within a predetermined detection range A that includes the product P. The sensor 121 is a camera and is capable of generating image data of the detection range A. The sensor 121 analyzes color differences for each pixel in the generated image data and can detect positions within the detection range A where a color different from other areas exists, by corresponding the positions of the pixels on a two-dimensional coordinate system in the image data. The color may include lightness, saturation, and hue. That is, the sensor 121 may be capable of detecting differences in at least one of lightness, saturation, and hue.

[0029] In this embodiment, the sensor 121 is located above the winding body 111 .

[0030] The alarm 122 can issue an alarm to the worker H working on the winding device 110. The alarm 122 may issue an alarm to the worker H by sound, light, or the like. The alarm 122 notifies the worker H that he or she needs to work carefully. In this embodiment, the alarm 122 is located above the winding body 111.

[0031] The control unit 130 is capable of communicating with the drive unit 112, the sensor 121, and the alarm device 122. The control unit 130 is capable of receiving a detection signal DS from the sensor 121 indicating that a color difference has been detected within a predetermined detection range A.

[0032] When a predetermined stop condition is satisfied, the control unit 130 transmits a control signal CS to the drive unit 112. Upon receiving the control signal CS, the drive unit 112 stops the rotation of the winding body 111 caused by the drive unit 112.

[0033] When a predetermined warning condition is met, the control unit 130 transmits a warning signal WS to the alarm device 122. The alarm device 122 starts issuing a warning to the worker H.

[0034] The light emitting device 140 is a device capable of emitting visible light. The light emitting device 140 is an example of a light emitting unit. In this embodiment, the light emitting device 140 is capable of emitting sheet-shaped laser light La. The laser light may be emitted in the form of a beam and reciprocated in the left-right direction to form a pseudo-sheet-shaped laser light La. Alternatively, the pseudo-sheet-shaped laser light La may be formed by emitting a plurality of beam-shaped laser light beams aligned in the left-right direction. The laser light La emitted from the light emitting device 140 divides the detection range A into two ranges.

[0035] 2 illustrates a predetermined detection range A detected by the sensor 121. As illustrated in FIG. 2, the detection range A includes an emergency stop area A1 and an alarm area A2. The boundaries between the emergency stop area A1 and the alarm area A2 are visually indicated by the laser light La emitted from the light emitting device 140.

[0036] The emergency stop area A1 is an area of ​​the detection range A that includes the winding point P0. The warning area A2 is an area adjacent to the emergency stop area A1. In this embodiment, the warning area A2 is located closer to the roller RL than the emergency stop area A1. In other words, the warning area A2 is located forward of the emergency stop area A1.

[0037] Next, the operation and winding method of the winding system 100 in the first embodiment will be described. The sensor 121 can detect the position of the worker H's hand h based on the difference in color between the worker H's hand h and the product P. The sensor 121 transmits a detection signal DS corresponding to the position of the worker H's hand h to the control unit 130. In other words, the detection signal DS includes information associated with the position of the worker H's hand h.

[0038] The control unit 130 determines where the position of the hand h of the worker H is located within the detection range A. Depending on the position of the hand h of the worker H, the signal transmitted from the control unit 130 varies.

[0039] When the sensor 121 detects that at least a part of the hand h of the worker H is in the emergency stop area A1, the control unit 130 transmits a control signal CS to the drive unit 112. The drive unit 112 stops the rotation of the winding body 111 based on the control signal CS.

[0040] When the sensor 121 detects that at least a part of the hand h of the worker H is within the warning area A2, the control unit 130 transmits a warning signal WS to the alarm device 122. The alarm device 122 issues a warning to the worker H based on the warning signal WS.

[0041] According to the winding system 100 of this embodiment, the sensor 121 can detect the position of the hand h of the worker H. When the hand h of the worker H is in the warning area A2, a warning is issued indicating that caution is required. When the hand h of the worker H is in the emergency stop area A1, it is determined that there is an actual danger and the rotation of the winding body 111 is stopped. In this way, safety is determined based on the hand h of the worker H, which is likely to be a body part close to the winding device 110 during work, so it is more accurately determined whether to issue a warning or stop the rotation of the winding body 111. This makes it possible to provide a winding system 100 that achieves both improved safety and improved work efficiency.

[0042] According to the winding system 100 of this embodiment, the warning area A2 and the emergency stop area A1 are visually separated by the laser light La, so that the worker H can easily recognize the limit area where it is acceptable to approach and work, making work around the winding device 110 more efficient.

[0043] A worker H working near the winding body 111 may work while wearing gloves on his hands h that are a different color than the color of the product P. For example, if the outer surface of the product P is colored red, the worker H will work while wearing blue gloves on his hands h. If the outer surface of the product P is colored blue, the worker H will work while wearing red gloves on his hands h. If the outer surface of the product P is colored a color other than red or blue, the worker H will work while wearing either red or blue gloves, whichever color is closest to the complementary color of the color of the outer surface of the product P.

[0044] The sensor 121 detects the position of gloves of a different color than the product P within the detection range A. As described above, the control unit 130 determines the position of the hand h of the worker H depending on whether the gloves of a different color than the product P are located in the warning area A2 or the emergency stop area A1.

[0045] According to the winding method of this embodiment, the sensor 121 can easily detect the hand h of the worker H in the detection range A because the worker H wears gloves of a different color than the product P. When the hand h of the worker H is in the warning area A2, a warning is issued indicating that caution is required. When the hand h of the worker H is in the emergency stop area A1, it is determined that there is an actual danger and the rotation of the winding body 111 is stopped. In this way, safety is determined based on the hand h of the worker H, which is likely to be a body part close to the winding device 110 during work, so it is more accurately determined whether to issue a warning or stop the rotation of the winding body 111. This makes it possible to provide a winding method that achieves both improved safety and improved work efficiency.

[0046] Second Embodiment Next, a winding system 200 according to a second embodiment will be described. In the second embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

[0047] 3 and 4 illustrate a winding system 200 according to a second embodiment. In FIG. 3, the winding system 200 in the first stage is illustrated by a solid line, and the winding system 200 in the second stage is illustrated by a two-dot chain line. In FIG. 4, the winding system 200 in the second stage is illustrated by a solid line, and the winding system 200 in the first stage is illustrated by a two-dot chain line. The first stage is an initial stage of winding the product P in the winding system 200. The second stage is an end stage of winding the product P in the winding system 200.

[0048] The winding system 200 according to the second embodiment differs from the winding system 100 according to the first embodiment in that sensors and light emitting devices are provided in two locations. As illustrated in Figures 3 and 4, the winding system 200 includes a winding device 210, a safety device 220, a control unit 230, a first light emitting device 241, and a second light emitting device 242. The winding device 210 includes a winding body 211 and a drive unit 212.

[0049] The driver 212 grips the lower part of the winding body 211. The upper surface of the driver 212 is driven to move forward, causing the winding body 211 to rotate clockwise when viewed from the perspective of FIGS.

[0050] The winding diameter of the product P around the winding body 211 increases as the product P is wound. The drive unit 212 grips the lower part of the winding body 211 and is not connected to the central axis Ax of the winding body 211. Therefore, as illustrated in FIGS. 3 and 4, the central axis Ax of the winding body 211 is displaced upward and forward from the first central position Ax1 as the product P is wound. The upward direction is an example of the first direction.

[0051] The position of the central axis Ax of the winding body 211 in the first stage is referred to as a first central position Ax1, and the position of the central axis Ax of the winding body 211 in the second stage is referred to as a second central position AX2. As illustrated in Figures 3 and 4, the second central position AX2 is located above the first central position Ax1.

[0052] Accordingly, the winding point of the winding body 211 also displaces upward and forward as the product P is wound. The winding point in the first stage is referred to as the first winding point P1, and the winding point in the second stage is referred to as the second winding point P2. As the product P is wound, the winding point displaces from the first winding point P1 to the second winding point P2, which is located upward.

[0053] The safety device 220 includes a sensor and an alarm 122. The sensors include a first sensor 221a and a second sensor 221b. The first sensor 221a can detect the color in a first detection range A21. The second sensor 221b can detect the color in a second detection range A22.

[0054] The first detection range A21 includes a first warning area A211 and a first emergency stop area A212 that is closer to the first winding point P1 than the first warning area A211. In this embodiment, the first emergency stop area A212 includes the first winding point P1.

[0055] The second detection range A22 includes a second warning area A221 and a second emergency stop area A222 that is closer to the second winding point P2 than the second warning area A221. In this embodiment, the second emergency stop area A222 includes the second winding point P2.

[0056] In a side view of the winding body 211 seen from one side of the central axis Ax of the winding body 211, a line connecting the first sensor 221a and the first winding point P1 is referred to as a first line L1, and a line connecting the second sensor 221b and the second winding point P2 is referred to as a second line L2. The first sensor 221a and the second sensor 221b are disposed so that a normal direction n1 at the first winding point P1 intersects with the first line L1 at a smaller angle than does the second line L2. The first sensor 221a and the second sensor 221b are disposed so that a normal direction n2 at the second winding point P2 intersects with the second line L2 at a smaller angle than does the first line L1.

[0057] The control unit 230 is capable of communicating with the drive unit 212, the first sensor 221a, the second sensor 221b, and the alarm device 122. The control unit 230 is capable of receiving a first detection signal DS1 from the first sensor 221a indicating that a color difference has been detected within a predetermined first detection range A21, and a second detection signal DS2 from the second sensor 221b indicating that a color difference has been detected within a predetermined second detection range A22.

[0058] When a predetermined stop condition is satisfied, the control unit 230 transmits a control signal CS to the drive unit 212. Upon receiving the control signal CS, the drive unit 212 stops the rotation of the winding body 111 caused by the drive unit 212.

[0059] When a predetermined warning condition is met, the control unit 230 transmits a warning signal WS to the alarm device 122. The alarm device 122 begins issuing a warning to the worker H.

[0060] The first light-emitting device 241 and the second light-emitting device 242 are devices capable of emitting visible light. The first light-emitting device 241 and the second light-emitting device 242 are examples of light-emitting units. In this embodiment, the first light-emitting device 241 and the second light-emitting device 242 are capable of emitting sheet-shaped laser beams La1 and La2, respectively.

[0061] The laser beam La1 emitted from the first light-emitting device 241 divides the first detection range A21 into two areas. The boundary between the first emergency stop area A212 and the first alarm area A211 in the first detection range A21 is visually defined by the laser beam La1 emitted from the first light-emitting device 241.

[0062] The laser light La2 emitted from the second light-emitting device 242 divides the second detection range A22 into two areas. The boundary between the second emergency stop area A222 and the second alarm area A221 in the second detection range A22 is visually defined by the laser light La2 emitted from the second light-emitting device 242.

[0063] Next, the operation and winding method of the winding system 200 in the second embodiment will be described. The first sensor 221a and the second sensor 221b can detect the position of the hand h of the worker H based on the difference in color between the hand h of the worker H and the product P. The first sensor 221a and the second sensor 221b continue sensing from the start to the end of winding.

[0064] The first sensor 221a transmits a first detection signal DS1 corresponding to the position of the hand h of the worker H to the control unit 230. That is, the first detection signal DS1 includes information associated with the position of the hand h of the worker H.

[0065] The second sensor 221b transmits a second detection signal DS2 corresponding to the position of the hand h of the worker H to the control unit 230. That is, the second detection signal DS2 includes information associated with the position of the hand h of the worker H.

[0066] When at least one of the first sensor 221a and the second sensor 221b detects that at least a part of the hand h of the operator H is in at least one of the first emergency stop area A212 and the second emergency stop area A222, the control unit 230 transmits a control signal CS to the drive unit 212. The drive unit 212 stops the rotation of the winding body 211 based on the control signal CS.

[0067] When at least one of the first sensor 221a and the second sensor 221b detects that the hand h of the worker H is in at least one of the first warning area A211 and the second warning area A221, the control unit 230 transmits an alarm signal WS to the alarm device 122. The alarm device 122 issues an alarm to the worker H based on the alarm signal WS.

[0068] Depending on the type of winding body 211 and the way in which the product P is wound by the winding body 211, the work area may change according to the rotation of the winding body 211. According to the winding system 200 of this embodiment, the first sensor 221a and the second sensor 221b are installed, so that it is possible to issue a warning or stop the rotation of the winding body 211 depending on the different work area.

[0069] According to the winding system 200 of this embodiment, the center of the second detection range A22 is located at a point displaced upward in the first direction from the first center position Ax1, so that even if the winding point displaces upward as the winding of the product on the winding body 111 progresses, the second sensor 221b can detect the worker's hand.

[0070] According to the winding system 200 of the present embodiment, in the first detection range A21, the normal direction n1 at the first winding point P1 and the first straight line L1 intersect at a small angle, and in the second detection range A22, the normal direction n2 at the second winding point P2 and the second straight line L2 intersect at a small angle. Therefore, the operator's hands can be detected more accurately in both the first detection range A21 and the second detection range A22.

[0071] Although the present disclosure has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present disclosure. Furthermore, the number, position, shape, etc. of the components described above are not limited to the above embodiments, and can be changed to the number, position, shape, etc. that are suitable for implementing the present disclosure.

[0072] In the first embodiment, the detection range A in which the sensor 121 can detect is determined to be either the emergency stop area A1 or the warning area A2, but the detection range A may include an area that is neither the emergency stop area A1 nor the warning area A2. The same applies to the first detection range A21 and the second detection range A22 in the second embodiment.

[0073] Furthermore, the first embodiment may also be provided with a plurality of sensors 121. For example, in Fig. 2, the plurality of sensors 121 may be provided so that the detection ranges are shifted to the left or right. [Explanation of symbols]

[0074] 100,200 Winding System 110,210 Winding device 111,211 Rolling body 112,212 Drive unit 120,220 Safety equipment 121 Sensors 122 Alarm 130,230 Control unit 140 Light-emitting device 221a First Sensor 221b Second sensor 241 First Light-Emitting Device 242 Second Light-Emitting Device A. Detection range A1 Emergency stop area A2 Warning Area A21 First detection range A22 Second detection range A211 First Alarm Area A212 First emergency stop area A221 Second Alarm Area A222 Second emergency stop area h hand H worker L1 First straight line L2 Second straight line n1,n2 normal direction P Product P0 Entrapment point P1 First Entrance Point P2 Second wrapping point

Claims

1. a winding device including a winding body and a drive unit that rotates the winding body, and winds a product around the winding body; Safety devices and A winding system comprising: The safety device comprises: a sensor capable of detecting color differences within a predetermined detection range that includes the product; an alarm capable of issuing an alarm to an operator working on the winding device, the detection range includes an emergency stop area including a winding point where the product is wound onto the winding body, and an alarm area adjacent to the emergency stop area; the sensor is capable of detecting the position of the worker's hand based on a difference in color between the worker's hand and the product; When the sensor detects that at least a part of the worker's hand is in the emergency stop area, the drive unit stops the rotation of the winding body; When the sensor detects that the worker's hand is in the warning area, the alarm issues a warning to the worker. Winding system.

2. a light-emitting unit capable of emitting visible light to make the boundary between the warning area and the emergency stop area visible; The winding system of claim 1 .

3. the sensor includes a first sensor capable of detecting color in a first detection range and a second sensor capable of detecting color in a second detection range; the first detection range includes a first alarm area and a first emergency stop area that is closer to the winding point than the first alarm area, the second detection range includes a second alarm area and a second emergency stop area that is closer to the winding point than the second alarm area, When at least one of the first sensor and the second sensor detects that at least a part of the operator's hand is in at least one of the first emergency stop area and the second emergency stop area, the drive unit stops rotation of the winding body; When at least one of the first sensor and the second sensor detects that the worker's hand is in at least one of the first alarm area and the second alarm area, the alarm issues an alarm to the worker. The winding system according to claim 1 or 2.

4. the central axis of the winding body is displaced in a first direction from a first central position as the product is wound; The winding point is displaced from the first winding point to a second winding point located in a first direction as the product is wound, the first emergency stop area includes the first entrapment point, The second emergency stop area includes the second winding point. The winding system of claim 3 .

5. When the winding body is viewed from one side of the central axis of the winding body, If a line connecting the first sensor and the first winding point is defined as a first line, and a line connecting the second sensor and the second winding point is defined as a second line, a normal direction at the first winding point intersects with the first line at a smaller angle than with the second line; the normal direction at the second winding point intersects with the second line at a smaller angle than with the first line; The winding system of claim 4.

6. A winding method for rotating a winding body and winding a product around the winding body, comprising: detecting the position of the worker's hand by a sensor based on the difference in color between the worker's hand and the product within a predetermined detection range including an emergency stop area including a winding point where the product is wound onto the winding body and an alarm area adjacent to the emergency stop area; When it is detected that at least a part of the operator's hand is in the emergency stop area, stopping the rotation of the winding body; issuing an alert to the worker when it is detected that at least a part of the worker's hand is in the alert area; The worker wears gloves on his or her hands that are a different color than the product. Winding method.

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