Traverser device

Abstract

To provide a traverser device capable of adjusting an angle of a traverser pulley according to a winding diameter of a wire when a rotary shaft of the traverser pulley is provided to cross a rotary shaft of a reel.SOLUTION: A traverser pulley (41) that rotates about a rotation axis (2a) orthogonal to a rotation axis (41a) of a reel (2) around which a wire (3) is wound, a moving mechanism (61) that moves the traverser pulley (41) along the rotation axis (2a) of the reel (2), a swinging mechanism (63) that swings the rotation axis (41a) of the traverser pulley (41) in a direction orthogonal to the rotation axis (2a) of the reel (2), and a winding-diameter detecting unit (5) that detects a winding diameter of the wire (3) wound around the reel (2); A control unit 9 configured to move the traverser pulley 41 in a direction orthogonal to the rotation axis 2a of the reel 2 by using the swing mechanism 63, wherein SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a traverser device that allows a linear object such as a wire to be wound around a reel, and more particularly to a traverser device that allows the angle of the traverser pulley to be adjusted. [Background technology]

[0002] Conventionally, a traverser device is generally used to feed a wire into and out of a reel.

[0003] This traverser device comprises a traverser pulley located near the reel onto which the wire is wound, and a movement mechanism for moving the traverser pulley along the direction of the rotation axis of the reel. By moving the traverser pulley along the direction of the rotation axis of the reel, the wire can be wound evenly onto the reel.

[0004] In a conventional traverser device, when the rotation axis 101b of the traverser pulley 101 and the rotation axis 102a of the reel 102 are arranged parallel to each other as shown in Figure 7, the wire 103 can be kept aligned with the groove 101a of the traverser pulley 101 even if the winding diameter of the wire 103 changes (as shown by the dashed line). However, when the rotation axis 104a of the traverser pulley 104 and the rotation axis 102a of the reel 102 are arranged perpendicular to each other as shown in Figure 6 (see Patent Document 1), if the winding diameter of the wire 103 on the reel 102 changes, the incoming angle and outgoing angle of the wire 103 relative to the traverser pulley 104 will change, as shown by the dashed line. As a result, the wire 103 enters and exits the groove 104b of the traverser pulley 104 at an angle, which not only causes wear on the traverser pulley 104 and the wire 103, which are made of silicon or the like, but also creates the problem that the wire 103 may come off the traverser pulley 104. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2015-74067 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, the present invention has been made with an eye on the above-mentioned problems, and aims to provide a traverser device that allows the angle of the traverser pulley to be adjusted according to the winding diameter of the wire when the rotation axis of the traverser pulley is arranged to intersect with the rotation axis of the reel. [Means for solving the problem]

[0007] In other words, in order to solve the above-mentioned problems, the present invention provides a reel on which a wire is wound, a traverser pulley that rotates around a rotational axis that intersects with the rotational axis of the reel, a first moving mechanism that moves the traverser pulley along the rotational axis of the reel, a second moving mechanism that moves the rotational axis of the traverser pulley in a direction that intersects with the rotational axis of the reel, and a winding diameter detection means that detects the winding diameter of the wire wound around the reel, and a control unit that uses the second moving mechanism to move the traverser pulley in a direction that intersects with the rotational axis of the reel in accordance with the winding diameter detected by the winding diameter detection means.

[0008] By configuring it in this manner, even if the winding diameter of the wire changes, the groove of the traverser pulley can be aligned in the linear direction of the wire, thereby reducing wear on the traverser pulley and wire and reducing the risk of the wire coming off the traverser pulley.

[0009] In this invention, the second moving mechanism is a mechanism that swings the traverser pulley in a direction perpendicular to the axis of rotation of the reel.

[0010] With this configuration, the traverser pulley can be swung with a simple configuration to move the traverser pulley to a position corresponding to the winding diameter.

[0011] Furthermore, the winding diameter of the wire around the reel is calculated based on the running of the wire, and the second moving mechanism is controlled using the control unit based on the calculated winding diameter.

[0012] With this configuration, the winding diameter can be detected with a simpler configuration than when the winding diameter of the wire actually wound around the reel is directly detected.

[0013] When detecting the diameter of the wire wound around the reel, the number of revolutions of the reel and the number of revolutions of another roller based on the running of the wire are used to detect the diameter of the wire wound around the reel.

[0014] With this configuration, the winding diameter of the reel can be easily detected simply by detecting the number of rotations of the reel or an existing pulley. [Effects of the Invention]

[0015] According to the present invention, even if the winding diameter of the wire changes, the groove of the traverser pulley can be aligned in the linear direction of the wire, thereby reducing wear on the traverser pulley and wire and reducing the risk of the wire coming off the traverser pulley. [Brief explanation of the drawings]

[0016] [Figure 1] An ingot cutting device according to one embodiment of the present invention [Figure 2] Schematic front view of the traverser device in the same configuration. [Figure 3] Schematic front view of the traverser device in the same configuration. [Figure 4] FIG. 2 is a perspective view of the traverser device in the same configuration. [Figure 5] FIG. 10 shows the state in which the traverser pulley in the same configuration is swung. [Figure 6] A diagram showing the positional relationship between the traverser pulley and the wire in a conventional example [Figure 7] A diagram showing the positional relationship between the traverser pulley and the wire in a conventional example DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0018] 1, the ingot cutting device 1 to which the traverser device 4 of this embodiment is applied is configured to include a wire 3 for cutting a silicon ingot 8, a reel 2 for winding the wire 3, a traverser device 4 that enables the wire 3 to be wound evenly around the reel 2, and a cutting unit 7 that cuts the ingot 8 using the wire 3. Characteristically, when the rotation axis 41a of the traverser pulley 41 is arranged perpendicular to the rotation axis 2a of the reel 2, the groove 42 of the traverser pulley 41 is oriented in the direction along the line of the wire 3 entering and leaving the reel 2. The ingot cutting device 1 and the traverser device 4 of this embodiment will be described in detail below.

[0019] First, the reel 2 provided in the ingot cutting device 1 has flanges 21 on both the left and right ends along the direction of the rotation axis 2a, and the wire 3 is wound between these flanges 21. The wire 3 is fed in and out of the reel 2 with a constant tension.

[0020] As shown in Figures 2 and 3, the traverser device 4 provided adjacent to the reel 2 is equipped with a movement mechanism 61 that moves the traverser pulley 41 in a direction along the rotation axis 2a of the reel 2. This movement mechanism 61 is controlled by the control unit 9 (see Figure 1) so that the traverser pulley 41 can be turned back at the position of the flange 21. The rotation axis 41a of the traverser pulley 41 is provided so as to intersect with the rotation axis 2a of the reel 2, as shown in Figure 4 and other figures. Note that such reel 2 and traverser device 4 are provided in two locations, on the outgoing side and the incoming side, with the cutting section 7 in between, as shown in Figure 1, and are configured to repeatedly input and output the wire 3 while winding it onto the incoming reel 2.

[0021] The cutting section 7 (see Figure 1) provided along the path of such wire 3 is designed to cut the ingot 8 using the wire 3 containing abrasive powder, and is configured so that the wire 3 is made to circle around guide rollers 71 provided on the left and right sides and pressed against the ingot 8 with a predetermined pressure, thereby cutting the ingot 8 to the thickness of the gap between the wire 3.

[0022] In this configuration, in this embodiment, a swing mechanism 63 (see FIGS. 2 to 5) for swinging the traverser pulley 41 is provided.

[0023] This swing mechanism 63 is configured to align the groove 42 of the traverser pulley 41 along the linear direction of the wire 3 entering and leaving the reel 2, and is configured to rotate an arm 46 (see FIG. 5) using a motor around a swing shaft 44 to swing the bracket 43 to which the traverser pulley 41 is attached. At this time, a balancer 45 having an equivalent mass to the swing shaft 44 is provided on the opposite side of the swing shaft 44 so that the traverser pulley 41 can be swung with a light force when swinging the traverser pulley 41.

[0024] The control unit 9 (Fig. 1) not only moves the traverser pulley 41 left and right as described above, but also controls the angle of this traverser pulley 41 so that it is oriented in a direction corresponding to the winding diameter of the reel 2. When oriented in a direction corresponding to this winding diameter, the winding diameter of the wire 3 is first detected by the winding diameter detection means 5 (see Figs. 1 to 3).

[0025] When detecting the winding diameter of the wire 3 on the reel 2 using this winding diameter detection means 5, various methods can be used, but here, a first sensor 51 that detects the rotation speed R1 is provided on the reel 2, and a second sensor 52 that detects the rotation speed R2 is provided on the guide roller 71, and the winding diameter (diameter D1) associated with the input and output of the wire 3 is detected using the rotation speeds R1 and R2 detected by the first sensor 51 and second sensor 52, respectively, and the diameter D2 of the guide roller 71.

[0026] Specifically, when detecting the winding diameter for the reel 2, first, the running distance of the wire 3 is measured. When measuring the running distance of the wire 3, if the number of rotations of the guide roller 71 is R2 and the diameter of the guide roller is D2, the running distance d of the wire 3 is calculated by the following formula 1.

[0027] <Formula 1> R2×D2×π=d

[0028] On the other hand, this travel distance d is calculated by the following formula 2, where R1 is the number of rotations of the reel 2 and D1 is the variable diameter relative to the winding diameter of the reel.

[0029] <Formula 2> d=R1×D1×π

[0030] From the above formula, the winding diameter D1 can be calculated as follows:

[0031] <Formula 3> D1=d / (R1×π)=R2×D2 / R1

[0032] Then, using the winding diameter D1 calculated in this manner, the angle of the traverser pulley 41 is adjusted in a direction along the groove of the traverser pulley 41 so that the groove 42 of the traverser pulley 41 is aligned with the linear direction of the wire 3.

[0033] Here, the winding diameter D1 onto the reel 2 is calculated using the rotation speed R1 of the reel 2 and the rotation speed R2 of the guide roller 71, but the winding diameter can also be detected by the following method.

[0034] <Second winding diameter detection method>

[0035] As a second method for detecting the winding diameter, an optical sensor whose detection direction is the direction of the winding diameter of the wire 3 actually wound around the reel 2 is attached to the bracket 43, and this optical sensor is used to detect the winding diameter.

[0036] <Third winding diameter detection method>

[0037] A third method for detecting the winding diameter is to provide a separate driven pulley that follows the running wire 3, and a sensor that detects the number of rotations of this driven pulley, and calculate the running distance of the wire 3 based on the number of rotations of this sensor, and then calculate the winding diameter of the reel 2 based on that running distance.

[0038] <Fourth winding diameter detection method>

[0039] A fourth method for detecting the winding diameter is to measure the weight of the reel 2, and use that weight to calculate the amount of wire 3 wound around the reel 2, thereby calculating the winding diameter. In this case, when measuring the weight of the reel 2, a load cell or the like is attached to the rotating shaft 2a of the reel to measure the weight.

[0040] Furthermore, the winding diameter of the wire 3 around the reel 2 may be detected using a method other than the above.

[0041] Next, a method of using the ingot cutting device 1 configured as above will be described.

[0042] First, when cutting an ingot 8 using a wire 3, reels 2 are set on the rotary shafts 2a on the outgoing and incoming sides, and the wire 3 is taken out of the reel 2 on the outgoing side and wound around the reel 2 on the opposite side via the guide roller 71 of the cutting section 7.

[0043] Then, the wire 3 is run with a certain tension applied to it, cutting the ingot 8.

[0044] At this time, the winding diameter of the outlet reel 2 gradually decreases as the wire 3 is taken out, while the winding diameter of the incoming reel 2 gradually increases.

[0045] Therefore, the winding diameter D1 of the wire 3 around the reel 2 is calculated using the rotation speed R1 of the reel 2, the rotation speed R2 and diameter D2 of the guide roller 71, etc., and the swinging mechanism 63 is used to control the traverser pulley 41 in accordance with this winding diameter D1 so that the groove 42 of the traverser pulley 41 follows the linear direction of the wire 3 (the state shown in FIG. 5). At this time, the angle at which the groove 42 of the traverser pulley 41 follows the wire 3 is set in the initial state, and the swinging mechanism 53 is used to control the angle of the traverser pulley 41 to an angle corresponding to the calculated winding diameter D1. Then, while adjusting the angle of the traverser pulley 41 in this manner, the movement mechanism 61 is used to reciprocate the traverser pulley 41 left and right.

[0046] The ingot 8 is cut while the wire 3 is repeatedly fed and retrieved in this manner.

[0047] As described above, according to the embodiment, the system includes a reel 2 on which the wire 3 is wound, a traverser pulley 41 that rotates around a rotation axis 41a that intersects with the rotation axis 2a of the reel 2, a moving mechanism 61 that moves the traverser pulley 41 along the rotation axis 2a of the reel 2, a swinging mechanism 63 that swings the rotation axis 41a of the traverser pulley 41 in a direction perpendicular to the rotation axis 2a of the reel 2, a winding diameter detection means 5 that detects the winding diameter of the wire 3 wound around the reel 2, and a control unit 9 that uses the swinging mechanism 63 to move the traverser pulley 41 in a direction perpendicular to the rotation axis 2a of the reel 2 in accordance with the winding diameter detected by the winding diameter detection means 5.Therefore, even if the winding diameter of the wire 3 changes, the groove 42 of the traverser pulley 41 can be aligned in the linear direction of the wire 3 relative to the reel 2. This reduces wear on the traverser pulley 41 and the wire 3, and also prevents the wire 3 from coming off the traverser pulley 41.

[0048] The present invention is not limited to the above-described embodiment, but can be implemented in various forms.

[0049] For example, in the above embodiment, the orientation of the groove 42 of the traverser pulley 41 is adjusted using the swing mechanism 63, but the rotation axis 41a of the traverser pulley 41 may be extended in the axial direction to align the groove 42 of the traverser pulley 41 with the direction of the wire 3 relative to the reel 2.

[0050] In addition, in the above embodiment, the case where the rotation axis 41a of the traverser pulley 41 is perpendicular to the rotation axis 2a of the reel 2 has been described, but a similar configuration can also be adopted when the rotation axis 41a is set at an angle other than perpendicular.

[0051] Furthermore, in the above embodiment, the ingot cutting device 1 has been described, but the present invention can also be applied to devices and mechanisms for inputting and outputting threads or wires from bobbins. [Explanation of symbols]

[0052] 1. Ingot cutting device 2 reels 2a Rotation axis 21. Flange 3. Wire 4. Traverser device 41 Traverser pulley 41a Rotating shaft 42...Groove 43 Bracket 44....Oscillating shaft 45 Balancer 5. Winding diameter detection means 51, 52 Sensor 61...Moving mechanism 63. Oscillating mechanism 7...Cut section 71 Guide roller 8 Ingots 9. Control section

Claims

1. A reel on which the wire is wound, a traverser pulley that rotates around an axis of rotation that intersects with the axis of rotation of the reel; a first moving mechanism that moves the traverser pulley along the rotation axis of the reel; and a second moving mechanism that moves the rotation axis of the traverser pulley in a direction intersecting with the rotation axis of the reel. a winding diameter detecting means for detecting the winding diameter of the wire wound around the reel; a control unit that uses the second movement mechanism to move the traverser pulley in a direction intersecting with the rotation axis of the reel in accordance with the winding diameter detected by the winding diameter detection means; A traverser device comprising:

2. 2. The traverser device according to claim 1, wherein the second moving mechanism is configured by a mechanism that tilts the traverser pulley in a direction perpendicular to the rotation axis of the reel.

3. 2. A traverser device according to claim 1, wherein the winding diameter detecting means calculates the winding diameter of the wire around the reel based on the running of the wire.

4. 2. A traverser device according to claim 1, wherein the winding diameter detection means detects the winding diameter of the wire using the number of revolutions of the reel and the number of revolutions of another roller based on the running of the wire.

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