Traverser device

Abstract

To provide a traverser device for moving a traverser pulley along a rotary shaft of a reel, by accurately detecting a load applied to the traverser pulley, even when tilting the traverser pulley in response to a winding diameter of a wire.SOLUTION: A traverser pulley 41 rotated by a rotary shaft 2a orthogonal to the rotary shaft 41a of a reel 2 around which a wire 3 is wound is oscillated according to the winding radius of the wire 3 wound around the reel 2, and the wire 3 is laid along the groove 42 of the traverser pulley 41. When the traverser pulley 41 is moved to the right and left, the value of a load detection sensor 41a provided at the rotation axis 91a of the traverser pulley 41 is corrected according to the inclination angle of the traverser pulley 41, and the traverser pulley 41 is moved to the right and left using the value.SELECTED DRAWING: Figure 6

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] Incidentally, in a conventional traverser device, as shown in Figure 8, a device has been proposed in which the load applied to a traverser pulley 101 is detected by a load detection sensor 100, and the load detected by this load detection sensor 100 is used to detect the angle of a wire 103 entering or leaving the traverser pulley 101, and the traverser pulley 101 is moved along the rotation axis 102a of a reel 102 (see Patent Document 1). [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] However, in a structure in which the rotation axis of the traverser pulley 101 is arranged perpendicular to the rotation axis of the reel 102 as described above, when the winding diameter of the wire 103 on the reel 102 changes as shown by the dashed line in Fig. 7, the angle of the wire 103 entering and leaving the traverser pulley 101 changes. At this time, it is necessary to adjust the angle of the traverser pulley 101 to align the wire 103 with the groove 101a of the traverser pulley 101, but if the angle of the traverser pulley 101 is tilted in accordance with the winding diameter of the wire 103, an error will occur in the detected load of the load detection sensor 100.

[0007] Therefore, the present invention has been made with an eye on the above-mentioned problems, and aims to provide a traverser device that can accurately detect the load acting on the traverser pulley, even when the traverser pulley is tilted according to the winding diameter of the wire, and moves the traverser pulley along the rotation axis of the reel so that the angle of the incoming and outgoing wire is appropriate. [Means for solving the problem]

[0008] 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 by a rotation axis that intersects with the rotation axis of the reel, a first movement mechanism that moves the traverser pulley along the rotation axis of the reel, a second movement mechanism that tilts the rotation axis of the traverser pulley in a direction that intersects with the rotation axis of the reel, a winding diameter detection means that detects the winding diameter of the wire wound around the reel, a first control unit that uses the second movement mechanism to tilt the traverser pulley in a direction that intersects with the rotation axis of the reel in accordance with the winding diameter detected by the winding diameter detection means, a load detection sensor provided on the traverser pulley, a second control unit that uses the first movement mechanism to move the traverser pulley along the rotation axis of the reel in accordance with the load from the wire that enters and leaves the traverser pulley, and a correction unit that corrects the load of the load detection sensor in accordance with the angle of tilting caused by the first control unit. [Effects of the Invention]

[0009] According to the present invention, even if the traverser pulley is tilted according to the winding diameter of the wire, the value of the load detection sensor can be corrected according to the state of tilt, so that the load acting on the traverser pulley by the wire can be accurately detected and the wire can be inserted and removed perpendicular to the rotation axis of the reel. [Brief explanation of the drawings]

[0010] [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 is a diagram showing a state in which the traverser pulley is swung in the same configuration. [Figure 6]A diagram showing the angle of the traverser pulley and the compensation load of the load detection sensor in the same configuration. [Figure 7] A diagram showing the positional relationship between the traverser pulley and the wire in a conventional example [Figure 8] FIG. 10 shows the position control of a traverser pulley in a conventional example. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0012] As shown in Fig. 1, the ingot cutting device 1 to which the traverser device 4 of this embodiment is applied includes a wire 3 for cutting an ingot 8 such as SiC, 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, a load detection sensor 91a is provided on the rotation axis 41a of a traverser pulley 41, and the traverser pulley 41 is swingably mounted, and the detection value of the load detection sensor 91a is corrected according to the swing angle to control the left and right movement of the traverser pulley 41. The ingot cutting device 1 and the traverser device 4 of this embodiment will be described in detail below.

[0013] 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 then fed in and out of the reel 2 with a constant tension.

[0014] As shown in Figures 2 and 3, the traverser device 4 provided adjacent to the reel 2 includes 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 capable of reciprocating between the left and right flanges 21 so that the wire 3 can be wound evenly around the reel 2, and is controlled by the control unit 9 (see Figure 1). Note that the rotation axis 41a of the traverser pulley 41 is arranged perpendicular to the rotation axis 2a of the reel 2, as shown in Figure 4 and other figures. Note that such reels 2 and traverser devices 4 are provided in two locations, on the outgoing side and the incoming side, with the cutting unit 7 in between, as shown in Figure 1, so that the wire 3 is repeatedly input and output and wound onto the incoming reel 2.

[0015] The control unit 9 controls the position and angle of this traverser pulley 41, and controls the position of the traverser pulley 41 so that the wire 3 can be wound evenly around the reel 2. When controlling the position of the traverser pulley 41 in this way, a load detection sensor 91a (see FIG. 5) is provided at the base end of the rotation axis 41a of the traverser pulley 41, and the traverser pulley 41 is moved so that the load applied from the wire 3 between the traverser pulley 41 and the reel 2 in the movement direction (movement direction of the movement mechanism 61) becomes zero, and the wire 3 is wired in and out so as to be perpendicular to the rotation axis 2a of the reel 2.

[0016] The cutting section 7 (see Figure 1) is designed to cut the ingot 8 using a wire 3 containing abrasive powder, and is configured to make the wire 3 go around guide rollers 71 provided on the left and right sides and press it against the ingot 8 with a predetermined pressure, so that the ingot 8 can be cut to the thickness of the gap between the wire 3.

[0017] In this configuration, in this embodiment, first, a swing mechanism 63 (see FIGS. 2 to 5) for swinging the traverser pulley 41 is provided.

[0018] 5, this swing mechanism 63 is configured so that the groove 42 of the traverser pulley 41 is aligned along the axial direction of the wire 3 entering and leaving the reel 2, and is configured so that a motor is used to rotate an arm 46 around a swing shaft 44, thereby swinging a 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.

[0019] Furthermore, the control unit 9 not only moves the traverser pulley 41 left and right as described above, but also controls the angle of the traverser pulley 41 so that it faces a direction corresponding to the winding diameter of the reel 2. When the angle of the traverser pulley 41 is to face a direction corresponding to the winding diameter, the winding diameter is first detected by the winding diameter detection means 5 (see Figures 1 to 3).

[0020] Various methods can be used for this winding diameter detection means 5, but here, a first sensor 51 is provided on the reel 2 to detect its rotation speed R1, and a second sensor 52 is provided on the guide roller 71 to detect its rotation speed R2, and the respective rotation speeds R1, R2 and the diameter D2 of the guide roller 71 are used to detect the winding diameter (diameter D1) associated with the input and output of the wire 3.

[0021] 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.

[0022] <Formula 1> R2×D2×π=d

[0023] 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.

[0024] <Formula 2> d=R1×D1×π

[0025] From the above formula, the winding diameter D1 can be calculated as follows:

[0026] <Formula 3> D1=d / (R1×π)=R2×D2 / R1

[0027] Then, using the winding diameter D1 calculated in this way, the angle of the traverser pulley 41 is adjusted in a direction along the groove of the traverser pulley 41, and the groove 42 of the traverser pulley 41 is aligned with the linear direction of the wire 3.

[0028] 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.

[0029] <Second winding diameter detection method>

[0030] As a second method for detecting the winding diameter, an optical sensor that directly detects 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.

[0031] <Third winding diameter detection method>

[0032] 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.

[0033] <Fourth winding diameter detection method>

[0034] 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 detection sensor or the like is provided on the rotating shaft 2a of the reel to measure the weight.

[0035] Furthermore, the winding diameter of the wire 3 around the reel 2 may be detected using a method other than the above.

[0036] Then, depending on the winding diameter detected by the winding diameter detection means 5, the angle of the groove 42 of the traverser pulley 41 is controlled so that it follows the line of the wire 3, and the traverser pulley 41 is moved in the left-right direction.

[0037] Incidentally, when the traverser pulley 41 is tilted in accordance with the winding diameter in this way, the load by the traverser pulley 41 detected by the load detection sensor 91a changes depending on the angle, as shown in Fig. 6. Therefore, the load value is corrected using the correction unit 91.

[0038] Specifically, an angle detection unit 40 that detects the tilt angle of the traverser pulley 41 is provided on the swing shaft 44, and the tilt from the position at the time of manufacture is detected as the origin. Then, only the amount of change based on the weight of the traverser pulley 41 caused by the tilt is calculated, and the corrected load value from the load detection sensor 91a is output to the control unit 9 as a correction value to control the movement of the traverser pulley 41.

[0039] Next, a method of using the ingot cutting device 1 configured as above will be described.

[0040] 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.

[0041] Then, the wire 3 is run with a certain tension applied to it, cutting the ingot 8.

[0042] 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.

[0043] Therefore, the winding diameter D1 of the wire 3 relative to the reel 2 is calculated using the rotation speed R1 of the reel 2, the rotation speed R2 of the guide roller 71, and the diameter D2, etc., and the traverser pulley 41 is controlled using the swing mechanism 63 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 (state shown in Figure 5).

[0044] Then, with the angle of the traverser pulley 41 adjusted in this manner, the angle detection unit 40 provided in the swinging mechanism 63 detects the tilt angle θ from the reference axis, corrects the load of the load detection sensor 91a provided on the rotation axis 41a of the traverser pulley 41 to a load along the reference axis, and outputs this value to the control unit 9 to control the position of the traverser pulley 41 and move it left and right.

[0045] The ingot 8 is cut while the wire 3 is repeatedly fed and retrieved in this manner.

[0046] At this time, similarly, the winding diameter D1 of the wire 3 relative to the reel 2 is calculated using the rotation speed R1 of the reel 2 and the rotation speed R2 of the guide roller 71, and corresponding to this winding diameter D1, the swinging mechanism 63 is used to control the angle 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, and the load of the load detection sensor 91a of the traverser pulley 41 is corrected, and the corrected value is used to move the traverser pulley 41 back and forth.

[0047] As described above, according to the embodiment, there are provided the reel 2 on which the wire 3 is wound, the traverser pulley 41 that rotates by a rotation axis 41a that intersects with the rotation axis 2a of the reel 2, the moving mechanism 61 that moves the traverser pulley 41 along the rotation axis 2a of the reel 2, the swinging mechanism 63 that swings the rotation axis 41a of the traverser pulley 41 in a direction that intersects with the rotation axis 2a of the reel 2, the winding diameter detecting means 5 that detects the winding diameter of the wire 3 wound on the reel 2, the control unit 9 that swings the traverser pulley 41 in a direction that intersects with the rotation axis 2a of the reel 2 using the swinging mechanism 63 in accordance with the winding diameter detected by the winding diameter detecting means 5, and the control unit 9 that controls the traverser pulley 41 to rotate in a direction that intersects with the rotation axis 2a of the reel 2. The traverser pulley 41 is provided with a load detection sensor 91a, a control unit 9 that uses the moving mechanism 61 to move the traverser pulley 41 along the rotation axis 2a of the reel 2 based on the load from the wire 3 entering and leaving the traverser pulley 41, and a correction unit 91 that corrects the load of the load detection sensor 91a based on the angle θ of tilting by the control unit 9.Therefore, even if the traverser pulley 41 is tilted in accordance with the winding diameter of the wire 3, the value of the load detection sensor 91a can be corrected in accordance with the state of tilt, and the load acting on the traverser pulley 41 can be accurately detected, allowing the wire 3 to be entered and exited perpendicular to the rotation axis 2a of the reel 2.

[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 case where the rotation axis 41a of the traverser pulley 41 is perpendicular to the rotation axis 2a of the reel 2 is described, but a similar configuration can also be adopted when the rotation axis 41a is set at an angle other than perpendicular.

[0050] 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]

[0051] 1. Ingot cutting device 2 reels 2a Rotation axis 21. Flange 3. Wire 4. Traverser device 40 Angle detection unit 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

[Claim 1] A reel on which the wire is wound, a traverser pulley that rotates on a rotation axis that intersects with the rotation axis of the reel; a first moving mechanism that moves the traverser pulley along the rotation axis of the reel; a second moving mechanism that tilts the rotation axis of the traverser pulley in a direction intersecting the rotation axis of the reel; a winding diameter detecting means for detecting the winding diameter of the wire wound around the reel; a first control unit that tilts the traverser pulley in a direction intersecting with the rotation axis of the reel using the second movement mechanism in accordance with the winding diameter detected by the winding diameter detection means; a load detection sensor provided on the traverser pulley; a second control unit that uses the first moving mechanism to move the traverser pulley along the rotation axis of the reel in response to a load from a wire entering or leaving the traverser pulley; a correction unit that corrects the load of the load detection sensor based on the tilt angle caused by the first control unit; A traverser pulley control device comprising:

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