JP2011121732A - Wire delivering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire delivering device capable of preventing any damage to a wire or occurrence of any ravel of the wire caused by rubbing of wires without largely increasing an installation space thereof. <P>SOLUTION: The wire delivering device includes a displacement mechanism (30) for changing the position of a wire holding unit in the direction of a rotary axis of the wire holding unit (3), a displacement detection unit (41) for detecting the displacement in the direction of the rotary axis of the wire delivered from the wire holding unit (3), and a control unit (52) for changing the position of the wire holding unit (3) by controlling the displacement mechanism (30) according to the result of detection of the displacement detection unit (41). <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a wire rod feeding device that feeds a wire wound around the wire rod holding portion by rotating the wire rod holding portion.

  When manufacturing the electric wire by which insulation coating was made | formed around the wire which consists of electroconductive materials, such as copper or aluminum, a wire operation apparatus is used. The wire rod feeding device is a device that feeds the wire wound around the bobbin by rotating a bobbin that holds the wire rod. The wire drawn out from the wire feeding device is drawn into a subsequent coating process, and in the coating process, an insulating material is coated around.

  FIG. 3 is a schematic configuration diagram of a conventional general wire rod operating device 100. FIG. 3A and FIG. 3B are a side view and a plan view of the wire rod handling device 100, respectively. As shown in FIG. 3, the conventional wire rod handling device 100 includes a bobbin support mechanism 4, a feeding motor 5, a first driven roller 11, and a fixed roller mechanism 20.

  The bobbin support mechanism 4 is a mechanism that rotatably supports the bobbin 3 around which the wire 2 is wound. The feeding motor 5 is a motor that rotationally drives the bobbin 3 supported by the bobbin support mechanism 4 in a certain direction. The feeding motor 5 is controlled to rotate at a speed corresponding to the drawing speed of the wire 2 in a subsequent process. Thereby, an appropriate tension is applied to the drawn wire 2. Hereinafter, the direction of the rotation axis of the feeding motor 5, that is, the direction parallel to the rotation center line of the feeding motor 5 is referred to as a bobbin rotation axis direction 92. Moreover, the line along the wire 2 sent out to a back process from a wire rod operation apparatus when it sees from upper direction is called the back process sending line 91. FIG. Usually, the bobbin rotation axis direction 92 and the post-process delivery line 91 are orthogonal to each other.

  The first driven roller 11 is supported by a support mechanism (not shown) so that it can be displaced by being driven by the wire 2 in the bobbin rotation axis direction 92. Further, the first driven roller 11 is urged against the wire 2 fed out from the bobbin 3 and is rotated following the wire 2.

  The fixed roller mechanism 20 includes a second driven roller 21 that rotates following the wire 2 that has passed through the first driven roller 11, and a roller support shaft 22 that rotatably supports the second driven roller 21. Mechanism. The roller support shaft 22 is fixed to a predetermined fixing portion. The wire 2 that has passed through the fixed roller mechanism 20 is drawn into a subsequent process. Therefore, when viewed from above, the second driven roller 21 is arranged such that the rotation axis thereof is orthogonal to the post-process delivery line 91 and the center in the width direction thereof coincides. Further, the bobbin 3 is also arranged so that the rotation axis thereof is orthogonal to the post-process delivery line 91 and the center in the width direction thereof is coincident when viewed from above.

  In FIG. 3, the center position of the thick wavy circle is the feeding position of the wire 2 in the bobbin 3. When the wire 2 is sequentially fed out from the bobbin 3, the feeding position of the wire 2 in the bobbin 3 changes in the bobbin rotation axis direction 92. When the feeding position of the wire 2 changes in the bobbin rotation axis direction 92, a force in the bobbin rotation axis direction 92 is applied from the wire 2 to the first driven roller 11. As a result, the first driven roller 11 is displaced following the wire 2 in the bobbin rotation axis direction 92. The first driven roller 11 is provided to reduce the angle of entry of the wire 2 into the fixed roller mechanism 20 with respect to the post-process delivery line 91.

  When the feeding position of the wire 2 is on the post-process delivery line 91, a feeding angle that is an angle formed by the bobbin rotating shaft direction 92 and the feeding direction of the wire 2 from the bobbin 3 is 90 degrees. . Then, as the feeding position of the wire 2 is further away from the post-process delivery line 91, the feeding angle is greatly shifted from 90 degrees. When the feeding angle is greatly deviated from 90 degrees, the drawn wire 2 rubs against the wire 2 wound around the bobbin 3 adjacent thereto.

  The rubbing of the wire 2 causes scratches on the wire 2 and fraying of the twisted wire 2. In particular, when the wire 2 is a relatively soft conductor such as aluminum, the problem of flaws and fraying of the wire 2 becomes more prominent. Moreover, the wire 2 in which scratches or fraying has occurred may be disconnected in a subsequent coating step.

  Further, if the bobbin 3 and the fixed roller mechanism 20 are arranged at a sufficiently long distance with respect to the width of the bobbin 3, the variation in the feeding angle with respect to the change in the feeding position is reduced. The rubbing of the wire 2 can be avoided. However, in that case, there arises a new problem that the installation space for the operation device becomes very large.

  On the other hand, the wire rod feeding device disclosed in Patent Document 1 corresponds to the first driven roller 11 so as to detect a shift in the feeding direction and correct the shift in order to avoid rubbing of the wire 2. The traverse roller is actively moved in the bobbin rotation axis direction 92 by a motor.

JP 2000-296969 A

  However, the wire rod steering apparatus disclosed in Patent Document 1 has a problem that the wire rod is greatly bent in the traverse roller, and friction between the wire rod and the traverse roller occurs. For this reason, the wire rod steering device disclosed in Patent Document 1 cannot sufficiently solve the problem of wire scratches and fraying.

  SUMMARY OF THE INVENTION An object of the present invention is to prevent the occurrence of flaws and fraying of a wire material due to friction of the wire material without greatly increasing the installation space in the wire material handling device.

  The wire rod steering device according to the present invention is a device that feeds the wire wound around the wire rod holding portion by rotating the wire rod holding portion, and includes the following components. The first component is a displacement mechanism that changes the position of the wire holding part in the direction of the rotation axis of the wire holding part. A 2nd component is a displacement detection part which detects the displacement in the direction of the said rotating shaft of the said wire drawn | fed out from the said wire holding | maintenance part. A 3rd component is a control part which changes the position of the said wire holding | maintenance part by controlling the said displacement mechanism according to the detection result of the said displacement detection part.

  Further, the wire rod steering device according to the present invention is further driven to rotate following the wire rod fed out from the wire rod holding portion, and supported to be displaceable by following the wire rod in the direction of the rotation axis. It is conceivable to provide a roller. In this case, the displacement detection unit detects a displacement in the direction of the rotation shaft of the driven roller or a member interlocked with the driven roller.

  Further, in the wire rod steering device according to the present invention, the displacement detection unit detects that the wire rod has displaced from a predetermined reference range in the direction of the rotation axis to each outside both sides of the reference range. Can be considered. In this case, each time the displacement detecting unit detects that the wire has deviated from the reference range, the controller detects that the wire holding unit is disposed in a direction opposite to the direction in which the wire deviates from the reference range. The displacement mechanism is controlled so as to be displaced quantitatively.

  According to the present invention, according to the displacement of the wire rod fed out from the wire rod holding portion in the direction of the rotation shaft, the wire shaft is maintained at a state where the drawing angle of the wire rod is close to 90 degrees. The position of the wire holding part in the direction is adjusted. Further, when there is the driven roller that can be displaced in the direction of the rotating shaft by following the wire, the wire does not bend significantly at the driven roller. As a result, it is possible to prevent the wire material from being damaged and frayed due to the rubbing of the wire material. Moreover, the installation space for the wire rod steering device according to the present invention is only a slight space for moving the wire rod holding portion in the direction of the rotation axis compared to that of the conventional wire rod steering device. .

  In addition, when the displacement detection unit detects a displacement of the driven roller or a member interlocked with the driven roller in the direction of the rotation axis, a sensor having a relatively low sensitivity is used compared to a case of directly detecting a displacement of a thin wire Can be adopted. As a result, an effect of reducing the apparatus cost can be obtained.

  In addition, the displacement detection unit detects that the wire rod has deviated from both sides of the reference range, and the control for displacing the wire rod holding portion by a predetermined amount according to the detection result is a very simple sequence. It can be realized by control. As a result, the apparatus cost is reduced, and the control parameters can be easily adjusted.

1 is a schematic configuration diagram of a wire rod steering device 1 according to an embodiment of the present invention. The block diagram of the principal part relevant to control of the slide motor in the wire rod steering apparatus 1. FIG. The schematic block diagram of the conventional wire rod operation apparatus 100. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.

<First Embodiment>
First, the configuration of the wire rod steering device 1 according to the embodiment of the present invention will be described with reference to FIG. An apparatus 1 for feeding a wire rod 2 wound around the bobbin 3 to a subsequent process by rotating a bobbin 3 holding a wire rod 2 made of a material such as copper or aluminum. It is.

  As shown in FIG. 1, the wire rod steering device 1 includes a bobbin support mechanism 4, a feeding motor 5, a traverse roller mechanism 10, a fixed roller mechanism 20, a slide displacement device 30, displacement sensor units 41, 42, 43, and A control panel 50 is provided.

  The bobbin support mechanism 4 is a mechanism that rotatably supports the bobbin 3 around which the wire 2 is wound. The feeding motor 5 is a motor that rotationally drives the bobbin 3 supported by the bobbin support mechanism 4 in a certain direction. The rotation speed of the feeding motor 5 is controlled so that the tension generated in the wire 2 falls within an allowable range. The control panel 50 accommodates a feeding motor control circuit 51 that controls the rotational speed of the feeding motor 5 in accordance with the detection result of the tension generated in the wire 2. Thereby, an appropriate tension is applied to the drawn wire 2. A tension sensor that detects the tension generated in the wire 2 is provided in a subsequent process of the wire steering device 1.

  In the following description, as in the description of FIG. 3, the direction of the rotation axis of the feeding motor 5, that is, the direction parallel to the rotation center line of the feeding motor 5 is referred to as a bobbin rotation axis direction 92. Moreover, the line along the wire 2 sent out to a back process from a wire rod operation apparatus when it sees from upper direction is called the back process sending line 91. FIG. The bobbin rotation axis direction 92 and the post-process delivery line 91 are orthogonal to each other.

  The traverse roller mechanism 10 supports the first driven roller 11 and the first driven roller 11 so that the first driven roller 11 is displaceable by being driven by the wire 2 in the bobbin rotation axis direction 92, and the first driven roller 11 is supported. And a mechanism for rotatably supporting. The first driven roller 11 is urged against the wire 2 drawn out from the bobbin 3 and rotates following the wire 2. In the example shown in FIG. 1, the first driven roller 11 is pressed against the wire 2 from above to below.

  The traverse roller mechanism 10 includes the first driven roller 11, a roller support shaft 12, an arm member 13, and a column 14. The arm member 13 is supported by the support column 14 which is fixed obliquely with respect to the vertical direction. More specifically, the arm member 13 is rotatably supported by the support column 14 within an inclined surface that forms an acute angle with respect to a horizontal plane. The roller support shaft 12 is provided at a rotating end portion of the arm member 13 and rotatably supports the first driven roller 11.

  The first driven roller 11 can rotate along an arc that is substantially parallel to the bobbin rotation axis direction 92 with the support post 14 as the center. Accordingly, the first driven roller 11 is supported by the column 14 and the arm member 13 so as to be displaceable in the bobbin rotation axis direction 92.

  The fixed roller mechanism 20 includes a second driven roller 21 that rotates following the wire 2 that has passed through the first driven roller 11, and a roller support shaft 22 that rotatably supports the second driven roller 21. Mechanism. The roller support shaft 22 is fixed to a predetermined fixing portion. The wire 2 that has passed through the fixed roller mechanism 20 is drawn into a subsequent process. Therefore, when viewed from above, the second driven roller 21 is arranged such that the rotation axis thereof is orthogonal to the post-process delivery line 91 and the center in the width direction thereof coincides. Further, the bobbin 3 is also arranged so that the rotation axis thereof is orthogonal to the post-process delivery line 91 and the center in the width direction thereof is coincident when viewed from above.

  In FIG. 1, the center position of the thick wavy circle is the feeding position of the wire 2 in the bobbin 3. In the wire rod feeding device 1, when the feeding position of the wire 2 changes in the bobbin rotation axis direction 92, a force in the bobbin rotation axis direction 92 is applied from the wire 2 to the first driven roller 11. As a result, the first driven roller 11 is displaced following the wire 2 in the bobbin rotation axis direction 92. The traverse roller mechanism 10 is provided to reduce the angle of entry of the wire 2 into the fixed roller mechanism 20 with respect to the post-process delivery line 91.

  By the way, when the wire rod 2 is sequentially fed out from the bobbin 3 while the position of the bobbin 3 is fixed in the wire rod feeding device 1, the feeding position of the wire rod 2 in the bobbin 3 is in the bobbin rotation axis direction. In 92, it changes greatly. However, the wire rod steering device 1 is accommodated in the slide displacement device 30, the displacement sensor units 41, 42, 43, and the control panel 50 in order to suppress fluctuations in the feeding position of the wire rod 2 in the bobbin 3. The slide motor control circuit 52 is provided.

  The slide displacement device 30 is a displacement mechanism that changes the position of the bobbin 3 that is a wire rod holding portion in the bobbin rotation axis direction 92. The slide displacement device 30 includes a slide motor 31 and a bobbin slide mechanism 32 which are driving sources. The bobbin slide mechanism 32 is a mechanism for reciprocating the bobbin support mechanism 4 and the carriage 6 supporting the feed motor 5 in the bobbin rotation axis direction 92 using the slide motor 31 as a drive source.

  In the example shown in FIG. 1, the carriage 6 is placed so that the wheels of the carriage 6 are fitted on a plurality of rails 8 provided in parallel to the upper surface of a base 7 fixed below the carriage 6. Has been. The plurality of rails 8 are formed to extend in the bobbin rotation axis direction 92. The bobbin support mechanism 4 converts the rotational force of the slide motor 31 into a linear driving force in the bobbin rotational axis direction 92 by a gear mechanism such as a rack and pinion, for example.

  Although the slide motor 31 in FIG. 1 is mounted on the carriage 6, for example, the slide motor 31 may be installed on the pedestal 7. Of course, the bobbin slide mechanism 32 employs different structures depending on whether the slide motor 31 is mounted on the carriage 6 or installed on the pedestal 7.

  The displacement sensor units 41, 42, 43 include a proximity sensor pair 41 including two proximity sensors 411, 412, a holding unit 42, and a detected unit 43. The holding portion 42 is a predetermined fixing portion, and holds the two proximity sensors 411 and 412 in a state of facing each other. Hereinafter, one of the two proximity sensors is referred to as a first proximity sensor 411 and the other is referred to as a second proximity sensor 412. The proximity sensor is a sensor that detects whether or not an object exists within a predetermined range.

  The detected portion 43 is a member that is fixed to a portion of the arm member 13 close to the first driven roller 11 and is displaced in the bobbin rotation axis direction 92 in conjunction with the first driven roller 11. That is, in the bobbin rotation axis direction 92, when the position of the first driven roller 11 changes within a predetermined range centering on the post-process delivery line 91, the position of the detected portion 43 is changed to the first driven roller. It changes within a predetermined range corresponding to the displacement range of the roller 11.

  In the wire rod feeding device 1, the displacement of the first driven roller 11 through which the wire rod 2 passes can be regarded as the displacement of the wire rod 2 fed from the bobbin 3 at the position of the first driven roller 11. Further, as described above, the detected portion 43 is interlocked with the movement of the first driven roller 11. Accordingly, in the wire rod feeding device 1, the displacement amount of the detected portion 43 in the bobbin rotation axis direction 92 is the displacement amount of the wire rod 2 fed from the bobbin 3 at the position of the first driven roller 11. Proportional. However, the correspondence relationship between the displacement amount of the detected portion 43 and the displacement amount of the wire 2 is the width of the peripheral surface of the first driven roller 11, that is, the passage surface of the wire 2 in the first driven roller 11. Including an error corresponding to the width of.

  Further, the position of the drawn wire 2 in the bobbin rotation axis direction 92 represents the size of the drawn angle of the wire 2. That is, when the position of the fed wire 2 coincides with the post-process delivery line 91, the feed angle of the wire 2 is 90 degrees. Further, as the position of the wire 2 is greatly deviated from the post-process delivery line 91, the feeding angle of the wire 2 is largely deviated from 90 degrees.

  Here, if the position of the peripheral surface of the first driven roller 11 in the bobbin rotation axis direction 92 falls within a predetermined first reference range r1 with respect to the post-process delivery line 91, the wire 2 is rubbed. Consider the case where the problem of flaws and fraying of the wire 2 due to the above does not occur. In this case, when the displacement range of the peripheral surface of the first driven roller 11 is the first reference range r1, the displacement range of the detected portion 43 in the bobbin rotation axis direction 92 is a predetermined second reference range. Let r2.

  The proximity sensor pair 41 is a sensor that detects that the detected portion 43 is displaced out of the second reference range r2 in the bobbin rotation axis direction 92 and deviates to both outer sides thereof. In the example shown in FIG. 1, the first proximity sensor 411 detects that the detected part 43 has displaced from the second reference range r2 to the right in the feeding direction of the wire 2. The second proximity sensor 412 detects that the detected portion 43 is displaced from the second reference range r2 to the left in the feeding direction of the wire 2.

  As described above, the displacement of the detected portion 43 within the second reference range r2 corresponds to the displacement of the wire 2 within the first reference range r1. Therefore, the proximity sensor pair 41 detects that the wire 2 passing through the first driven roller 11 is displaced out of the first reference range r1 in the bobbin rotation axis direction 92 and out of the both outer sides thereof. It is a sensor.

  FIG. 2 is a block diagram of main parts related to the control of the slide motor 31 in the wire rod steering device 1. As shown in FIG. 2, the slide motor control circuit 52 inputs detection signals of the first proximity sensor 411 and the second proximity sensor 412. Further, the slide motor control circuit 52 outputs a drive signal for forward rotation, reverse rotation, or stop to the slide motor 31 according to the detection results of both proximity sensors. The position of the bobbin 3 mounted on the carriage 6 changes in the bobbin rotation axis direction 92 by outputting a drive signal to the slide motor 31 by the slide motor control circuit 52.

  More specifically, the slide motor control circuit 52 detects that the wire 2 is deviated from the first reference range r1 by the proximity sensor pair 41 every time the wire 2 is detected from the first reference range r1. The slide motor 31 is controlled so that the bobbin 3 is displaced by a predetermined amount in a direction opposite to the direction deviating from the range r1. The displacement amount (movement distance) of the bobbin 3 per one time is adjusted in advance so that the wire 2 deviating from the first reference range r1 returns to the post-process delivery line 91 by one control. The deviation of the wire 2 from the first reference range r1 and the direction of the deviation are detected by the proximity sensor pair 41 by the deviation of the detected portion 43 from the second reference range r2 and the deviation thereof. It is replaced by detecting the direction.

  Under the control of the slide motor control circuit 52, the displacement of the wire 2 at the position of the first driven roller 11 is generally within the first reference range r1. Therefore, in the wire rod operating device 1, the first reference range r1 is set to an appropriate range in advance, so that the problem of flaws and fraying of the wire rod 2 due to rubbing of the wire rod 2 does not occur. Moreover, the installation space for the wire rod steering device 1 is only a slight space for moving the bobbin 3 in the bobbin rotation axis direction 92 as compared with that of the conventional wire rod steering device 100. Absent.

  Moreover, in the said wire rod operating apparatus 1, the feeding angle of the said wire rod is always maintained in the state close | similar to 90 degree | times. That is, the incident angle of the wire 2 with respect to each of the first driven roller 11 and the second driven roller 21 based on the post-process feed line 91 is always maintained within a very narrow angle range. That is, the wire 2 is not greatly bent at each of the first driven roller 11 and the second driven roller 21. Therefore, in the wire rod feeding device 1, the problem that the wire 2 rubs against the first driven roller 11 or the second driven roller 21 does not occur.

  Further, in the wire rod steering device 1, the detection of the displacement of the wire rod 2 is replaced by the detection of the displacement of the detected portion 43, which is a relatively large member interlocking with the wire rod 2. Thereby, even when the proximity sensor pair 41 with relatively low sensitivity is employed, the displacement of the detected portion 43 is reliably detected. As a result, an effect of reducing the apparatus cost can be obtained.

  The proximity sensor pair 41 detects that the wire 2 has deviated from both sides of the first reference range r1, and controls the displacement of the bobbin 3 by a predetermined amount according to the detection result. This can be realized with a very simple sequence circuit. As a result, the apparatus cost is reduced, and the control parameters can be easily adjusted.

  In the embodiment described above, the detection of the displacement of the wire 2 is replaced by the detection of the displacement of the detected portion 43 that is interlocked with the movement of the wire 2. However, the detection of the displacement of the wire 2 in the bobbin rotation axis direction 92 can also be realized by directly detecting the displacement of the wire 2 itself by a non-contact sensor such as a proximity sensor. In that case, the position of the wire 2 is detected by a non-contact sensor in a variation range of the trajectory of the wire 2 assumed in advance. However, the non-contact sensor needs to be sensitive enough to detect the thin wire 2. For example, when the wire rod steering device 1 does not include the traverse roller mechanism 10, it is necessary to directly detect the displacement of the wire rod 2 itself.

  Further, the detection of the displacement of the wire 2 in the bobbin rotation axis direction 92 may be replaced by the detection of the displacement of the first driven roller 11 driven by the wire 2.

  The detection of the displacement of the wire 2 can also be realized by a method other than the method of detecting that the wire or a member interlocked with the wire has deviated to both sides of the reference range. For example, it is conceivable that the wire rod steering device 1 includes a distance sensor that detects a distance from an installed position to the detected portion 43 instead of the proximity sensor pair 41. In this case, the distance sensor detects the amount of displacement of the detected portion 43 in the bobbin rotation axis direction 92.

  Various sensing methods of the distance sensor can be considered, such as a laser method, an eddy current method, and an ultrasonic method. As described above, when the displacement of the wire 2 is quantitatively detected, the slide motor control circuit 52 determines the movement amount and movement direction of the bobbin 3 according to the displacement amount and the displacement direction of the wire 2. Control. Thereby, the position control of the bobbin 3 can be performed more smoothly.

  Further, when the detection of the displacement of the wire 2 is replaced by the detection of the displacement of the detected portion 43 interlocked with the movement of the wire 2, the displacement of the detected portion 43 is a contact type such as a limit switch. It may be detected by a sensor.

  The present invention is applicable to a wire rod steering device.

DESCRIPTION OF SYMBOLS 1 Wire rod operation apparatus 2 Wire rod 3 Bobbin 4 Bobbin support mechanism 5 Feeding motor 6 Carriage 7 Base 8 Rail 10 Traverse roller mechanism 11 1st driven roller 12 Roller support shaft 13 Arm member 14 Post 20 Fixed roller mechanism 21 2nd driven roller 22 Roller support shaft 30 Slide displacement device 31 Slide motor 32 Bobbin slide mechanism 41 Proximity sensor pair 42 Holding part 43 Detected part 50 Control panel 51 Feeding motor control circuit 52 Slide motor control circuit 91 Subsequent process sending line 92 Rotating shaft direction 100 Conventional Wire material steering device 411 First proximity sensor 412 Second proximity sensor

Claims (3)

By rotating the wire rod holding portion, a wire rod feeding device for feeding out the wire wound around the wire rod holding portion,
A displacement mechanism for changing the position of the wire holding part in the direction of the rotation axis of the wire holding part;
A displacement detector that detects a displacement of the wire drawn from the wire holder in the direction of the rotation axis;
And a control unit that changes the position of the wire holding unit by controlling the displacement mechanism in accordance with a detection result of the displacement detection unit. A driven roller that is driven and rotated following the wire drawn from the wire holding unit, and is supported so as to be displaced by following the wire in the direction of the rotation axis;
The wire rod steering device according to claim 1, wherein the displacement detector detects a displacement of the driven roller or a member interlocked with the driven roller in a direction of the rotation shaft. The displacement detection unit detects that the wire is displaced from the predetermined reference range in the direction of the rotation axis and deviates to both outer sides of the reference range,
Whenever the displacement detector detects that the wire has deviated from the reference range, the control unit displaces the wire holding unit by a predetermined amount in a direction opposite to the direction in which the wire deviates from the reference range. The wire rod steering device according to claim 1 or 2, wherein the displacement mechanism is controlled.

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