JP5422971B2 - Spinning device for yarn breakage - Google Patents

Description

  The present invention relates to a yarn breakage detection device for a spinning machine, and more particularly to a yarn breakage detection device for a spinning machine that detects a yarn breakage by detecting travel of a traveler in a spinning machine such as a ring spinning machine or a ring twisting machine.

  In general, this type of thread breakage detection device is designed to allow a traveler made of magnetic material traveling on a ring fixed to a ring plate (ring rail) made of a magnetic material to travel by traveling through a magnetic circuit by electromagnetic induction. A detection unit for detection and a determination device for processing the detection signal of the detection unit to determine the presence or absence of yarn breakage are provided.

  Conventionally, as shown in FIG. 7, the ring plate (ring rail) 51 whose cross-sectional shape is formed in a crank shape is opposed to the ring 52 across the traveling path of the traveler 53 traveling on the ring 52. There has been proposed a thread break sensor 54 attached so that the detection unit 54a is arranged in a state. (For example, refer to Patent Document 1). A detection unit 54a is provided for each weight, and a detection signal of each detection unit 54a is sent to a determination device (not shown) via a wiring board 56 attached on a support plate 55 fixed to the back surface of the back surface portion 51a. It has become. The detection unit 54a is connected to the wiring board 56 via a flexible wiring 57 and a connector.

A single spinning machine is provided with several hundred spindles or more, and the main control device provided on the machine base processes the detection signals of all the detection units 54a to detect the yarn breakage. The number increases. Therefore, each ring plate 51 is provided with a CPU for processing the detection signal of the detection unit 54a and a control board having a signal line, and a signal processed by the CPU is sent to the main controller via the control board and the wiring board 56. There is also a thread breakage detection device with a configuration.
JP-A-9-111556

  When the thread break sensor 54 is attached to the ring plate 51, it is necessary to attach the thread break sensor 54 to the rear side of the ring plate 51 so that the thread break sensor 54 does not interfere with the yarn splicing operation. Conventionally, the wiring board 56 or the control board is provided on the rear side of the ring plate 51 so that the detection unit 54a of the yarn break sensor 54 and the wiring board 56 or the control board are close to each other. However, when the wiring board 56 or the control board is provided on the rear side of the ring plate 51, the maintenance wall of the wiring board 56 or the control board has the front wall of the pneumatic duct immediately behind the ring plate 51. Since there is almost no work space, the work is difficult unless the ring plate 51 is removed, and there is a problem that the maintenance work is troublesome.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a yarn breakage detection device for a spinning machine that does not interfere with the yarn splicing operation and has good maintenance workability.

In order to achieve the above object, the invention described in claim 1 is a yarn breakage detection device for a spinning machine that detects a yarn breakage by detecting a traveling of the traveler, and includes a sensor that detects the traveler. Is provided on the rear side of the ring plate, and a control board provided with a judgment unit for processing the detection signal of the sensor to judge the presence or absence of yarn breakage is provided on the front side of the ring plate, and the sensor and the control board are The sensor is electrically connected via a wiring disposed on the lower surface side of the ring plate, and the sensor is attached to the ring plate via a fixture through which a case for housing the detection unit passes through a mounting hole, A lead-out path for guiding the wiring connected to the detection unit to the lower side of the ring plate is formed in the fixture . Here, “the rear side of the ring plate” means the rear side of an imaginary line passing through the center of the ring and extending in parallel with the longitudinal direction of the ring plate.

In this invention, since the sensor is provided on the rear side of the ring plate, it does not interfere with the yarn splicing operation. Also, since the control board is provided on the front side of the ring plate, unlike the configuration in which the control board is provided on the rear side of the ring plate, connection and disconnection between the sensor side wiring and the control board side wiring is possible. The work is easy to perform, the control board replacement work is simple, and maintenance work is easy to perform.
Moreover, in this invention, the wiring connected to the detection part in a case can be derived | led-out below the ring plate from the extraction path | route formed in the fixture. Therefore, it is possible to secure a short wiring path to the control board without forming a hole dedicated for wiring derivation in the ring plate or the case.

  According to a second aspect of the present invention, in the first aspect of the invention, the sensor includes a latching portion that scratches and removes fibers attached to the traveler, and a traveler clearer formed on the ring plate. It is attached to the ring plate using an attachment hole. In this invention, since the sensor has a traveler clearer function, it is not necessary to provide a dedicated traveler clearer separately. Also, when installing a yarn breakage detection device on an existing spinning machine that does not have a yarn breakage detection device but only a traveler clearer, remove the existing traveler clearer and attach the sensor to the ring plate using the traveler clearer mounting hole. This eliminates the need to post-process the mounting holes in the ring plate.

  According to a third aspect of the present invention, in the first aspect of the present invention, the control board is supported by a support member that is fixed to the front wall of the ring plate and includes an accommodating portion that extends along the ring plate. The support member includes a pressing portion that can contact one surface of the front wall, and a fastener mounting portion that is provided so as to correspond to the pressing portion across the front wall and has a screw hole, The front wall is fastened and fixed by a fastener screwed into the screw hole and the pressing portion.

  In this invention, since the support member that supports the control board is fastened and fixed to the front wall of the ring plate by the fastener and the pressing portion that are screwed into the screw holes of the fastener attachment portion, the ring plate is post-processed. The control board can be attached without carrying out the process, and the yarn breakage detecting device can be easily attached to the existing spinning machine later.

  According to the present invention, it is possible to provide a yarn breakage detection device for a spinning machine that does not disturb the yarn splicing operation and has good maintenance workability.

Hereinafter, an embodiment in which the present invention is embodied in a yarn breakage detection device for a ring spinning machine will be described with reference to FIGS.
As shown in FIG. 1A, rings 12 are fixed to the ring plate 11 at regular intervals, and a traveler 13 (shown in FIGS. 1B and 1D) is provided on the ring flange 12a of each ring 12. It is slidably attached. The front of the ring plate 11 means the lower side in FIG. 1 (a), and the rear means the upper side in FIG. 1 (a). The yarn breakage detecting device includes a sensor 14 that detects the traveler 13, and a CPU 15 (shown only in FIG. 1 (c)) as a determination unit that processes the detection signal of the sensor 14 to determine the presence or absence of yarn breakage. And a substrate 16. In this embodiment, 24 rings 12 are fixed to one ring plate 11, and one sensor 14 is provided behind each ring 12, that is, on the rear side of the ring plate 11. One control board 16 having a CPU 15 is provided on the front side of the ring plate 11, and the CPU 15 processes detection signals of 24 sensors 14.

  On the front side of the ring plate 11, in addition to the signal wiring as a wiring (not shown) and the control board 16 provided with the CPU 15, three signal transmission boards 17 provided with signal wiring without the CPU 15 are provided. Of the 24 sensors 14, 6 sensors 14 are electrically connected to the control board 16 via wiring 18, and the remaining 18 sensors 14 are electrically connected to the signal transmission board 17 via wiring 18. Connected. The signal wirings of the control board 16 and the signal transmission board 17 are electrically connected so that detection signals of the sensors 14 can be input to the CPU 15.

  In general, a ring spinning machine includes several hundred or more weights, and a large number of ring plates 11 are arranged along the longitudinal direction of the machine base so that the rings 12 are spaced at regular intervals. As shown in FIG. 1A, the CPU 15 provided in each ring plate 11 is connected to the main control device 19 via signal wiring and wiring provided on the control board 16 and the signal transmission board 17, The processing result of the detection signal of each sensor 14 is sent to the main controller 19 by serial communication.

  As shown in FIG.1 (b), the sensor 14 is provided with the detection part 14a which detects the traveler 13, and the case 20 which accommodates the detection part 14a. The case 20 includes an attachment portion 20a that is fixed to the ring plate 11 in a state where the detection portion 14a is fixed, and a cover 20b that is fixed to the attachment portion 20a so as to cover the detection portion 14a and the attachment tool 21. . The cover 20b is made of a nonmagnetic material, such as stainless steel or resin.

  As shown in FIG. 1D, a latching portion 20c that functions to scratch and remove fibers attached to the traveler 13 protrudes from the outside of the cover 20b. That is, the sensor 14 is configured to also serve as a traveler clearer. The attachment portion 20a is attached to the ring plate 11 via an attachment hole 11a formed in the ring plate 11 and an attachment 21 that passes through the hole 20d formed in the attachment portion 20a. In this embodiment, the mounting hole 11a uses a traveler clearer mounting hole.

  The detection unit 14a includes, for example, a magnetic yoke made of a magnetic material, a disk-shaped permanent magnet, and a pickup coil wound around the magnetic yoke (both shown in FIG. And a flexible wiring 22 that is electrically connected to the pickup coil is extended. A connector 22 a is provided at the end of the flexible wiring 22. A magnetic circuit passing through the ring plate 11, the ring 12, and the magnetic yoke is formed by the magnetic flux from the N pole to the S pole of the permanent magnet of the detection unit 14a, and the pickup coil runs on the ring 12 made of magnetic material. The traveling of the traveler 13 is detected by electromagnetic induction caused by the traveler 13 made of a magnetic material crossing the magnetic circuit.

  The attachment 21 has a large-diameter portion (head) and a small-diameter portion like a bolt. A male screw 21a is formed in the small-diameter portion, and the small-diameter portion penetrates the attachment hole 11a and is screwed into the male screw 21a. The case 20 is fixed to the ring plate 11 in cooperation with the above. The attachment 21 is formed with a lead-out path 21b composed of a hole that leads the wiring connected to the detection unit 14a, that is, the flexible wiring 22 to the lower side of the ring plate 11.

  Further, as shown in FIG. 1C, the control board 16 and the signal transmission board 17 are fixed to the front wall 11 b of the ring plate 11 and have a support member 24 a that includes an accommodating portion 24 a that extends along the ring plate 11. 24. The support member 24 is provided with a pressing portion 24b capable of abutting against the front surface as one surface of the front wall 11b, and a fastener mounting portion provided so as to correspond to the pressing portion 24b across the front wall 11b and having a screw hole 25a. 25. The support member 24 is fastened and fixed to the front wall 11b by a screw 26 as a fastener screwed into the screw hole 25a and a pressing portion 24b.

  Each of the control board 16 and the signal transmission board 17 has six flexible wirings 27 extending in a direction perpendicular to the longitudinal direction of the control board 16 and the signal transmission board 17. A connector 27a that can be joined to the connector 22a is provided. As shown in FIGS. 2 and 3, the support member 24 is a guide that opens to the upper end and extends in the vertical direction at a position corresponding to the extended position of the flexible wiring 27 from the control board 16 and the signal transmission board 17. A groove 28 is formed. The fastener mounting portion 25 is formed to have a height lower than that of the accommodating portion 24a, and the screw hole 25a is formed in the guide groove so as to avoid interference between the screw 26 screwed into the screw hole 25a and the flexible wiring 27. 28 is shifted from the position 28.

  When the yarn breakage detecting device configured as described above is assembled to the ring plate 11, the attachment portion 20a of the case 20 to which the detection portion 14a is fixed is disposed at a position where the hole 20d faces the attachment hole 11a. And it fixes using the fixture 21 and the nut 23 to the position from which the distance of the detection part 14a and the ring 12 becomes the value of the range set beforehand corresponding to the traveler 13 used. Next, the flexible wiring 22 is led out from the end side to the lower surface side of the ring plate 11 through the lead-out path 21 b of the fixture 21.

  In addition, one control board 16 and three signal transmission boards 17 are adjacent to the accommodating portion 24a of the support member 24 in a state where each flexible wiring 27 is led out of the accommodating portion 24a from the guide groove 28. The signal wirings (not shown) of the adjacent control board 16 and signal transmission board 17 are connected by a connector (not shown). And the support member 24 is fixed using the screw 26 in the state where the front wall 11b of the ring plate 11 is clamped by the fastener attaching part 25 and the press part 24b. Next, each connector 22a provided at the tip of the flexible wiring 22 extending on the lower surface side of the ring plate 11 is connected to the connector 27a of the flexible wiring 27 from the control board 16 and the signal transmission board 17, thereby providing one piece. The assembly of the yarn breakage detecting device to the ring plate 11 is completed.

  A large number of ring plates 11 assembled with the yarn breakage detecting device in this way are arranged so as to extend along the longitudinal direction of the spinning machine base, and the control board 16 and the signal transmission board of the adjacent ring plates 11 are arranged. The signal wirings 17 (not shown) are connected to each other by a connector (not shown), so that signals can be exchanged between the CPU 15 on each control board 16 and the main controller 19.

Next, the operation of the yarn breakage detecting device will be described.
Due to the magnetizing action of the permanent magnet built in the detector 14a, the ring plate 11, the ring 12 and the magnetic yoke form a magnetic circuit composed of magnetic flux from the N pole to the S pole of the permanent magnet. If the pipe thread (not shown) rotates with the rotation of the spindle (not shown) during the spinning operation, the traveler 13 moves on the ring flange 12a at a speed corresponding to the rotational speed of the pipe thread unless the thread breaks. Run. Each time the traveler 13 rotates once on the ring flange 12a, the magnetic circuit is traversed once at a rate, and a pulse voltage synchronized with the rotation of the traveler 13 appears at both ends of the pickup coil. Further, in the yarn breakage state, a pulse voltage synchronized with the rotation of the traveler 13 is not output from the pickup coil.

  The CPU 15 sequentially inputs output signals from the 24 detectors 14a. If the pulse voltage is output, the CPU 15 determines that the spinning state is normal. If the pulse voltage is not output, the CPU 15 determines that the yarn is broken. The CPU 15 provided on each control board 16 outputs the presence / absence of thread breakage weight and the position (weight number) of the thread breakage weight to the main control device 19 based on a command signal from the main control device 19. The main controller 19 determines the spinning state of each spindle based on the yarn break detection signal from the CPU 15.

According to this embodiment, the following effects can be obtained.
(1) Since the sensor 14 provided with the detection part 14a which detects the traveler 13 is provided in the rear side of the ring plate 11, the sensor 14 does not interfere with the yarn splicing operation. In addition, a control board 16 having a determination unit (CPU 15) for processing the detection signal of the sensor 14 to determine whether or not there is a yarn breakage is provided on the front side of the ring plate 11, and the sensor 14 and the control board 16 are connected to each other. They are electrically connected via wires (flexible wires 22 and 27) arranged on the lower surface side of the plate 11. Therefore, unlike the configuration in which the control board 16 is provided on the rear side of the ring plate 11, connection and disconnection of the wiring on the sensor 14 side (flexible wiring 22) and the wiring on the control board 16 side (flexible wiring 27) are performed. The work can be performed without removing the ring plate 11, the replacement work of the control board 16 is simplified, and the maintenance work is easy to perform.

  (2) The sensor 14 includes a latching portion 20c that scratches and removes fibers attached to the traveler 13, and uses the traveler clearer attachment hole (attachment hole 11a) formed in the ring plate 11 to provide the ring plate 11 Is attached. Therefore, it is not necessary to provide a dedicated traveler clearer separately, and when installing the yarn breakage detection device retrofit to an existing spinning machine that does not have a yarn breakage detection device but only a traveler clearer, use the existing traveler clearer attachment hole. The sensor 14 can be attached to the ring plate 11, and the labor of post-processing the attachment hole 11 a in the ring plate 11 becomes unnecessary.

  (3) The control board 16 is supported by a support member 24 that is fixed to the front wall 11 b of the ring plate 11 and includes an accommodating portion 24 a that extends along the ring plate 11. The support member 24 includes a pressing portion 24b that can come into contact with one surface of the front wall 11b, and a fastener mounting portion 25 that is provided so as to correspond to the pressing portion 24b across the front wall 11b and has a screw hole 25a. Provided, and is fastened and fixed to the front wall 11b by a fastener (screw 26) screwed into the screw hole 25a and a pressing portion 24b. Therefore, since the support member 24 is fastened and fixed to the front wall 11b of the ring plate 11 by the fastener (screw 26) screwed into the screw hole 25a of the fastener attachment portion 25 and the pressing portion 24b, the ring plate 11 can be attached without post-processing, and the yarn breakage detecting device can be easily attached to an existing spinning machine by retrofitting.

  (4) The sensor 14 is attached to the ring plate 11 through the attachment 21 that passes through the attachment hole 11a formed in the ring plate 11 in the case 20 that houses the detection unit 14a. A lead-out path 21b is formed that includes a hole for guiding the wiring (flexible wiring 22) connected to the ring plate 11 to the lower side of the ring plate 11. Accordingly, the wiring (flexible wiring 22) connected to the detection unit 14a in the case 20 can be led out from the lead-out path 21b to the lower side of the ring plate 11, and a hole dedicated to wiring lead-out is formed in the ring plate 11 and the case 20. Without formation, a short wiring path to the control board 16 and the signal transmission board 17 can be secured.

  (5) In addition to the control board 16, the signal transmission board 17 is provided on the front side of the ring plate 11, and the flexible wirings 22 of some sensors 14 are connected to the flexible wiring 27 of the signal transmission board 17 to detect signals. Is input to the CPU 15 of the control board 16 through the signal transmission board 17. Therefore, unlike the configuration in which a plurality of control boards 16 are provided on one ring plate 11, the number of CPUs 15 can be reduced, which contributes to cost reduction. Further, the control board 16 can be made smaller and assembled as compared with a configuration in which the flexible wirings 22 of all the sensors 14 fixed to one ring plate 11 are directly connected to the flexible wiring 27 of the control board 16. Becomes easier.

The embodiment is not limited to the above, and may be embodied as follows, for example.
The sensor 14 is not limited to the configuration provided for each ring 12. For example, as shown in FIG. 4A, one sensor 14 including two detection units 14 a may be provided for two rings 12. Further, a configuration in which three or more detection units 14 a are provided as the sensor 14 may be adopted, and one sensor may be provided for three or more rings 12.

  The support member 24 is not limited to a configuration that supports the control board 16 and the signal transmission board 17 in a state of being positioned in front of the front wall 11 b of the ring plate 11. For example, as shown in FIG. 4B, the support member 24 is placed on the front wall 11b so that the fastener mounting portion 25 is positioned in front of the front surface of the front wall 11b and the pressing portion 24b is in contact with the rear surface of the front wall 11b. It may be fixed with screws 26. In this case, when the height of the wall 24c is lowered, the guide groove 28 need not be formed in the wall 24c.

  The fastener that fixes the support member 24 to the front wall 11b via the fastener attachment portion 25 is not limited to the screw 26 or the bolt that is screwed into the screw hole 25a. For example, as shown in FIGS. 5 (a) and 5 (b), the pressing portion 24b of the support member 24 is in contact with the front surface of the front wall 11b, and between the rear surface of the front wall 11b and the fastener mounting portion 25. A fastener 29 having a substantially U-shaped spring property is inserted. And the support member 24 is fixed to the front wall 11b in the state which fastens the front wall 11b with the press part 24b and the fastener 29. FIG.

(Circle) the support member 24 is good also as a structure attached using the hole for attachment formed in the front wall 11b of the ring plate 11, or the front side of the ring plate 11, and a screw hole.
○ Without providing the support member 24, the control board 16 and the signal transmission board 17 are directly attached with screws or bolts screwed into the screw holes formed in the front wall 11b of the ring plate 11, or the front wall 11b of the ring plate 11 You may attach directly with the screw, volt | bolt, and nut which penetrate the hole formed in this.

  The number of control boards 16 and signal transmission boards 17 provided on one ring plate 11 is not limited to one control board 16 and three signal transmission boards 17. For example, there is one control board 16 with eight flexible wirings 27 and two signal transmission boards 17, or both the control board 16 with 12 flexible wirings 27 and the signal transmission board 17 are one. The number of control boards 16 provided with 24 or flexible wiring 27 may be one. Further, the number of rings 12 provided on one ring plate 11 is not limited to 24, and may be more or less than 24.

The number of the flexible wirings 27 may be different between the control board 16 and the signal transmission board 17.
It is good also as the control board 16 provided with CPU15 all without providing the board | substrate 17 for signal transmission. In this case, although the number of CPUs 15 is increased, there is no possibility of mounting the control board 16 and the signal transmission board 17 by mistake.

  The lead-out path 21b formed in the fixture 21 is not limited to a hole as long as the wiring connected to the detection unit 14a can be led out below the ring plate. For example, as illustrated in FIG. 6A, a groove 30 extending along the axial direction may be formed in the attachment 21. In this case as well, a short wiring path to the control board 16 and the signal transmission board 17 can be secured without forming a dedicated hole for wiring lead out in the ring plate 11 or the case 20.

  The detection unit 14a is configured to detect traveling of the traveler by electromagnetic induction caused by the magnetic material traveler 13 traveling on the ring 12 fixed to the magnetic material ring plate 11 crossing the magnetic circuit. For example, a configuration using a light projecting / receiving light sensor may be used.

  ○ When the sensor 14 is provided with a traveler clearer function, the cover 20b is not formed with the latching portion 20c, and the accumulated fibers are removed from the traveling traveler 13 at the corners of the flat rectangular cover 20b. Also good.

  The sensor 14 may be provided separately from the traveler clearer without providing the traveler 14 with the traveler clearer function. In this case, a mounting hole 11a for the sensor 14 is formed in the ring plate 11 separately from the traveler clearer mounting hole.

  O The sensor 14 is not restricted to the structure provided with the attaching part 20a and the cover 20b which covers the attaching part 20a and the detection part 14a. For example, as shown in FIG. 6B, the detection unit 14a and the mounting unit 14b may be integrally formed, and the mounting unit 14b may have a hole 14c.

  The ring plate 11 is not limited to the inverted U-shaped cross section, and may be configured to attach the sensor 14 to the rear wall of the ring plate 11 in a cross-sectional crank shape, for example. Alternatively, a mounting plate that protrudes to a position higher than the upper surface of the ring plate 11 may be fixed to the rear wall of the ring plate 11 having an inverted U-shaped cross section, and the sensor 14 may be mounted on the mounting plate.

  ○ The spinning machine is not limited to the ring spinning machine. For example, the present invention may be applied to a ring twisting machine.

(A) is a schematic plan view showing the relationship between the ring plate and the yarn breakage detecting device, (b) is a schematic cross-sectional view showing the positional relationship between the ring and the sensor, and (c) is a schematic cross-section showing the mounting state of the support member. FIG. 4D is a schematic plan view showing the latching portion. The model partial perspective view of a supporting member. The partial side view of a supporting member. (A) is a schematic top view of the sensor of another embodiment, (b) is a schematic cross section which shows the attachment state of another support member. (A) is a schematic cross section which shows the attachment state by the fastener of another embodiment, (b) is BB sectional drawing of (a). (A) is a model perspective view of the fixture of another embodiment, (b) is a partially broken schematic diagram of the sensor of another embodiment. Sectional drawing of the ring plate equipped with the thread break sensor of a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Ring plate, 11a ... Mounting hole, 11b ... Front wall, 12 ... Ring, 13 ... Traveler, 14 ... Sensor, 14a ... Detection part, 15 ... CPU as judgment part, 16 ... Control board, 18 ... Wiring, 20 ... Case, 20c ... Hook part, 21 ... Mounting tool, 21b ... Lead path, 22 ... Flexible wiring as wiring, 24 ... Support member, 24a ... Accommodating part, 24b ... Pressing part, 25 ... Fastening attachment part, 25a DESCRIPTION OF SYMBOLS ... Screw hole, 26 ... Screw as fastener, 27 ... Flexible wiring as wiring, 29 ... Fastener, 30 ... Groove as lead-out path.

Claims (3)

A yarn breakage detection device for a spinning machine that detects traveling of a traveler to detect yarn breakage, and a sensor having a detection unit for detecting the traveler is provided on the rear side of the ring plate, and processes a detection signal of the sensor And a control board having a judgment section for judging whether or not there is a yarn breakage is provided on the front side of the ring plate, and the sensor and the control board are electrically connected via wiring arranged on the lower surface side of the ring plate. Connected ,
The sensor is attached to the ring plate through a fixture in which a case accommodating the detection unit passes through a mounting hole, and the wiring connected to the detection unit is led to the fixture below the ring plate. A yarn breakage detection device for a spinning machine in which a path is formed .   2. The sensor according to claim 1, wherein the sensor includes a hooking portion that scratches and removes fibers attached to the traveler and is attached to the ring plate using a traveler clearer attachment hole formed in the ring plate. The yarn breakage detecting device of the spinning machine described.   The control board is supported by a support member that is fixed to the front wall of the ring plate and includes an accommodating portion that extends along the ring plate, and the support member is capable of abutting against one surface of the front wall. And a fastener mounting portion provided so as to correspond to the pressing portion with the front wall interposed therebetween, and having a screw hole, the fastener and the pressing portion being screwed into the screw hole being The yarn breakage detection device for a spinning machine according to claim 1, wherein the yarn breakage detection device is fastened to a wall.

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