KR100921629B1 - Apparatus for cutting strip having a width variation - Google Patents

Abstract

The present invention relates to a strip width deviation removing device.

According to the present invention, the upper and lower straight knives for removing the leading strip trailing end and the upper and lower straight knives for removing the trailing strip leading end are respectively provided on both sides to selectively remove the leading strip trailing end and the trailing strip leading end. Notch body portion; A notch body rotator for mounting the notch body portion on an upper surface and rotating the notch body portion so that the preceding strip rear end and the trailing strip front end can be selectively removed; A notch body traverse portion for moving the notch body portion such that the notch body portion is linearly moved between the upper surface of the notch body rotating portion and the strip removing position; And a notch running rail unit which ensures a stable linear reciprocating motion of the notch body portion between the top surface of the notch body rotating portion and the strip removing position, wherein the elimination line of the trailing end portion of the preceding strip is a trailing strip among the sides of the preceding strip. Weld strip width deviation elimination, characterized in that it is connected to a face facing the neighboring face and the trailing strip leading edge portion is connected to a face facing the preceding strip and a neighboring face of the trailing strip. Provide a device.

Strip Removal, Notch, Rotation, Traverse, Weld Plate Tear

Description

Apparatus for cutting strip having a width variation}

1A and 1B are perspective views of a state of use of a conventional flush trimmer

Figure 2 is a perspective view of the strip width deviation removing apparatus according to an embodiment of the present invention

3A and 3B are detailed and exploded perspective view of the notch body portion of FIG.

4A and 4B are detailed and exploded perspective view of the notch body rotation part of FIG.

5A and 5B are detailed and exploded perspective views of the notch body traverse part of FIG.

6A and 6B are detailed and exploded perspective view of the notched traveling rail unit of FIG.

7 is an overall operation flow chart that can be made when the width of the line, the trailing strip in the strip width deviation removing apparatus according to the present invention is different.

8 is a reference diagram for explaining a trailing strip removing operation in the present invention.

9A and 9B are reference views showing a state in which the rod of the body fixing cylinder is reversed and in an advanced state, respectively;

10 is a reference diagram for explaining the preceding strip removing operation according to the present invention.

11 is a reference diagram showing a strip welding process after the strip width is matched by the present invention.

<Explanation of symbols for the main parts of the drawings>                 

100: notch body portion 100A: trailing strip removal knife portion

100B: Lead strip removal knife part 100-1: Up / down cylinder

100-2: connection flange 100-3a: upper knife

100-4a: Lower knife 100-4b: Lower knife fixing hole

100-5: Magnetic sensor 100-11b, 100-12b: Cylinder insertion groove

100-20: notch body 100-20a: opening

100-11a, 100-12a, 200-1b, 200-30b, 200-50b, 300-11,300-24,300-31: fixed plate

100-21: Upper knife guide groove 100-22: Knife seating groove

100-23: Traverse Cylinder Fixture 100-25: Sensor Touch Bar

100-26: Wheel 100-27: Wheel connecting shaft

100-40: strip sensor 200: notch body rotation part

200-1a, 400-10: Rail 200-10a: Turntable

200-10b, 200-20c: Gear 200-10c: Bearing

200-10d: Turntable Support 200-10e: Cover

200-20a: Turntable drive bar 200-20b: Guide protrusion

200-30a: Turntable Bar Cover 200-40: Touch Sensor

200-50a: Turntable Rotating Cylinder 200-60: Turntable Seat

300: notch body traverse portion 300-10: traverse cylinder

300-1,300-21,300-34,400-20: Mounting table 300-10b: Traverse cylinder connection                 

300-22: Body fixing cylinder 300-23: Traverse fixing pin

300-25: Bar connecting rod 300-30: Cylindrical speed detector

300-32: speed detector count bar 400: notch travel rail portion

300-33: speed detector count bar fixing cover 400-21: chute groove

400-22: round curve 400-30: H-beam

400-31: Hole 400-32: Cap

400-34: End Plate 400-35: Idle Roll

400-36: Support Plate

The present invention relates to a device for removing a strip width deviation of a hot rolled coil before welding in a cold rolling process, and more particularly, strip width at the time of removing the weld beads generated above and below the weld after welding the strip front and rear ends of the hot rolled coil. Plate tearing occurs due to the deviation, and relates to a strip width deviation removing device that can make the strip width deviation at the top of the carryover table before welding.

In the related art, as shown in FIG. 1A, when there is no width deviation or fineness in welding the front end of the hot rolled coil and the rear end of the preceding hot rolled coil in the cold rolling process, after performing normal welding, flush trimming is performed. The welded part is made clean so that the welded part passes through the tandem cold mill (TCM) smoothly.In the case of a wide variation in width, the welder is stopped without welding trimming after the completion of welding. I was doing a pickling rolling gap open.

However, when the width deviation is severe, the width deviation portion other than the welded strip is bent up and down, and when the flush trimmer 3 enters, the width deviation portion 4 is caught by the trimmer bite 2, causing the weld plate to be broken (Fig. Detail of FIG. 1b), and in case of such weld plate tearing, the expensive six trimmer bites are not only broken, but also an abnormal operation must be performed to disengage the leading end of the trailing strip or the trailing end of the preceding strip from the welder. There was a problem.

Accordingly, the present invention has been made to solve the above problems, the present invention receives the strip width information of the hot rolled coil to be followed before welding from the supervisor control computer (SCC) through the link means to automatically remove the strip width value After calculating, the notch for eliminating the width deviation is operated by the count value of the speed detector to remove the width deviation part of the strip, and the notch body is rotatable so that it can be used even when the width is reversed. The purpose is to provide a removal device.

In order to achieve the above object, the present invention, the upper and lower straight knives for removing the leading strip rear end and the upper and lower straight knives for removing the trailing strip front end on each side, respectively, the preceding strip rear end and the A notch body portion for selectively removing the trailing strip tip; A notch body rotator for mounting the notch body portion on an upper surface and rotating the notch body portion so that the preceding strip rear end and the trailing strip front end can be selectively removed; A notch body traverse portion for moving the notch body portion such that the notch body portion is linearly moved between the upper surface of the notch body rotating portion and the strip removing position; And a notch running rail unit which ensures a stable linear reciprocating motion of the notch body portion between the top surface of the notch body rotating portion and the strip removing position, wherein the elimination line of the trailing end portion of the preceding strip is a trailing strip among the sides of the preceding strip. Weld strip width deviation elimination, characterized in that it is connected to a face facing the neighboring face and the trailing strip leading edge portion is connected to a face facing the preceding strip and a neighboring face of the trailing strip. Provide a device.

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings in detail as follows.

2 is an overall configuration diagram of the strip width deviation removing apparatus according to an embodiment of the present invention, the notch main body portion 100, the notch rotating part 200, the notch traverse part 300, and the notch traveling rail part 400 The strip width deviation elimination device according to the present invention constituted by the present invention exemplifies a case in which the strips 10 and 11 are disposed on the left side of the traveling line transferred on the carryover table 12.

In FIG. 2, when the width of the trailing strip 10 is wider than that of the preceding strip 11 (when the width of the trailing strip is narrower than that of the preceding strip, the notch installed on the left side is used based on the dotted line on the drawing). Illustrates the case in which the notch main unit unit is set so that the width deviation portion of the strip can be removed, and the strip width deviation removing device according to the present invention having such a configuration is preferably provided at one side of each side of the strip traveling line. Do.

In the following invention, as shown in FIG. 2, only the set installed on the left side of the strip driving line will be described.                     

3A and 3B are perspective views illustrating the notch body portion 100 of FIG. 2 in detail and an exploded perspective view thereof, and the notch body portion 100 removes the width deviation portion of the trailing strip on the right side of the dotted line. A knife portion 100A for driving and its driving equipment, and a knife portion 100B for removing the width deviation portion of the preceding strip and a driving mechanism for the left side of the dotted line, respectively, are built into the leading end of the trailing strip or the rear end of the preceding strip. Configure it for optional removal.

As shown in FIGS. 3A and 3B, the notch body part 100 is a notch body having an opening 100-20a which opens both sides of the body so that a strip to be removed can be inserted to an intermediate part of the body. Upper and lower knives (100-3a, 100-4a) and driving mechanisms thereof, which are used to remove the trailing strip (10) above the carryover table (12), and the preceding strip (11). The upper and lower knives (knifes shown to the left of the dotted line on the drawing) and the driving equipment to be used when removing the width of each are divided into the driving equipments, and the respective equipment structures are the same as shown in FIG. The knife part 100A to be used when removing the strip 10 is mainly described.

On the upper end of the notch body 100-20, a square individual cylinder fixing plate 100-11a and an integrated cylinder fixing plate 100-12a having grooves 100-11b and 100-12b into which cylinders are to be inserted are installed. To fix the up / down cylinder 100-1 through the cylinder insertion grooves 100-11b and 100-12b, and to the upper end of the rod 100-3a of the up / down cylinder 100-1. By connecting the upper knife is configured to be up / down by the cylinder, and the magnetic sensor (100-5) to detect the rod position of the cylinder is attached to the case of the cylinder (100-1) It is configured to detect the up / down of the knife 100-3a.

An upper knife guide groove 100-21 is formed in the notch body 100-20 so that the upper knife 100-3a can be moved up and down, and the cylinder fixing plate 100-11a is integrated with the cylinder. The up / down cylinders 100-1 are inserted along the grooves 100-11b and 100-12b of the plates 100-12a.

The upper knife guide groove (100-21) formed in the notch body (100-20) is provided with an upper knife (100-3a), the connecting flange (100-) connecting the cylinder rod and the upper knife (100-3a) 2) using the cylinder rod side and the upper knife (100-3a) is configured to be fixed to the upper knife in the state, respectively, the upper knife (100-3a) is installed of the lower knife (100-4a) Position it so that it is located in the shape opposite to the position.

A space in which the upper knife 100-3a can be moved in and out by the reciprocating motion of the cylinder and a space in which the lower knife 100-4a can be seated below the opening 100-20a of the notch body 100-20. To form a knife seating groove (100-22) of the size, and one side of the seating groove (100-22) when the upper knife in and out of the seating grooves the cut surface of the lower knife and the upper knife each other The lower knife 100-4a is fixedly installed so that the strip can be cut while sliding without being contacted in an opposite state.

The lower knife 100-4a has a triangular shape and forms lower knife fixing holes 100-4b on both sides thereof so as to be fixed to the notch body 100-20 through the hole.

On the other hand, on both sides of the lower portion of the notch body (100-20) is installed a sensor touch bar (100-25) to be used when rotating the body and the notch body (100-20) in the lower front of the notch body (100-20) Install a traverse cylinder fixing ring (100-23) to be used when moving and install a strip sensor (100-40) to detect a strip at one end of the knife seating groove (100-22).

And the lower part of the notch body (100-20) is connected to the four wheels (100-26) to be used during movement by the wheel connecting shaft (100-27) and installed on each side, the above configuration is on the other side of the notch body The same applies to the installation of the preceding strip width removal device.

4A and 4B are detailed and exploded perspective views of the notch body rotating part 200 of FIG. 2 for rotating the preceding strip removing knife and the trailing strip removing knife 180 ° respectively installed at the left and right sides of the notch main body. A circular turntable 200-10a, a cylinder 200-50a to rotate the turntable, and a plurality of gears 200-10b and 200-20c.

As shown in FIGS. 4A and 4B, the notch body rotating unit 200 is provided with a turntable 200-10a on the top thereof to directly rotate the notch body 100-20 and the turntable 200-10a. The outer circumferential surface of the cylindrical gear (200-10b) is formed so that the turntable is rotated by receiving external power through the gear.

An upper portion of the turntable 200-10a is provided with two rails 200-1a on which the notch body 100-20 is installed, and is mounted by the fixing plate 200-1b.                     

In addition, a turntable support 200-10d is installed below the circular turntable 200-10a, but the turntable support 200-has a bearing 200-10c therebetween in the center groove of the turntable 200-10a. 10d) is installed so that the turntable can be rotated by the bearing and the support, and a cover 200-10e is installed on the bearing 200-10c to prevent bearing burnout.

The cylinder 200-50a to rotate the turntable is fixed to one side of the turntable mounting table 200-60 by a fixing plate 200-50b, and a cylinder gear of the turntable 200-10b on the rod of the cylinder. By connecting the turntable driving bar 200-20a formed in its entirety in the longitudinal direction to engage the gear 200-20c so that the turntable driving bar 200-20a moves horizontally by the operation of the cylinder. The turntable 200-10a can be rotated clockwise or counterclockwise by engaging two gears.

The turntable driving bar 200 is formed on the opposite side of the gear of the turntable driving bar 200-20a so as to move horizontally while being guided and guided by the turntable bar cover 200-30a and being guided by the turntable bar cover 200-30a. 200-20a).

 The turntable bar cover 200-30a is attached to the seating stand 200-60 for fixing the notch body rotating part using a fixing plate 200-30b, and is disposed at a predetermined position of the seating stand 200-60. By installing a touch sensor (200-40) interlocked with the sensor touch bar (100-25) mounted on both sides of the lower portion of the notch body portion to ensure accurate centering when the notch body portion rotates, the rotation state of the notch body portion Configure to detect.                     

5A and 5B are detailed and exploded perspective views of the notch main body traverse part 300 of FIG. 2, and include a detachable cylinder connecting device for traversing the notch main body part.

As shown in FIGS. 5A and 5B, the notch main body traverse unit 300 includes a rectangular fixing seating unit 300-1, and a traverse cylinder 300 using a fixing plate 300-11 on an upper surface thereof. -10) to fix it. The rod end of the cylinder is attached to the "c" shaped traverse cylinder connecting rod (300-10b) to be connected to the traverse cylinder fixing ring (100-23) attached to the notch body (100-20), the connecting rod (300-10b) Connect the body fixing cylinder (300-22) at right angles to the traverse cylinder (300-10) by using a), the body fixing cylinder (300-22) is seated by a fixed plate (300-24) at the bottom Install and fix the stand 300-21. On both sides of the cylinder connecting member (300-10b) to form a groove into which another cylinder rod can be inserted to connect two cylinders at right angles, the traverse cylinder fixing ring (100-23) and the cylinder connecting member (300-) The traverse fixing pins 300-23 to fix the 10b) can be inserted to protect the rod of the body fixing cylinder 300-22 by the traverse fixing pins 300-23.

And the bottom portion of the seating to form a groove to maintain the balance of weight during the operation of the cylinder.

One side of the traverse cylinder (300-10) is provided with a cylindrical speed detector (300-30) formed a gear on the outer peripheral surface of the front end portion is installed on the mounting table (300-34) using a fixing plate (300-31) And a speed detector count bar (300-32) for counting the speed detector by a bar connecting rod (300-25) at the rod end of the traverse cylinder (300-10), and the speed detector count bar (300). Position the speed detector count bar fixing cover (300-33) on the side of the traverse cylinder (300-10) so as to maintain the weight. In this case, a gear is formed on the front of the speed detector count bar to be in contact with the speed detector, so that the speed detector can be easily counted.

6A and 6B are detailed and exploded perspective views of the notch traveling rail unit 400 of FIG. 2, and as shown in FIGS. 6A and 6B, the notch traveling rail unit 400 is installed below the carryover table. do. The carryover table is provided with H-beams 400-30 on both sides, and a plurality of idle rolls 400-35 to be driven during strip progression, and the idle rolls 400-35 are formed on both H-beams. It is fitted in the hole 400-31 and its end is fixed with the cap 400-32 from the outside. In addition, the end portion of the carryover table is treated with an end plate 400-34, and a support plate 400-36 is installed between the idle roll and the roll to prevent sagging of the strip.

The notch traveling rail unit 400 is formed at the same height as the carryover table on the rail seating unit 400-20 on the right side of the notch body rotating unit 200. When the chute groove 400-21 is formed in the center portion of the body of the seat to which the scrap generated when strip width is removed, and the notch body is moved on the upper surface of the seat 400- 20. Two rails (400-10) to be used are installed on each side of the chute groove. In particular, the seating plate forms a rounded curved portion 400-22 on the side in contact with the notch body rotation part (left side of the drawing) so as not to interfere with the rotation of the turntable.

7 is an overall operation flow chart that can be performed when the width of the line and the following strip in the strip width deviation removing apparatus according to the present invention is different, the step of stopping at the front end of the preceding strip or the trailing strip (S701) And comparing the width of the preceding strip and the trailing strip by linking with the SCC data controller in the stationary state (S702), and removing the trailing end of the preceding strip if there is a width deviation between the preceding strip and the following strip. By selectively driving the knife portion 100A and the tip portion removing knife portion 100B of the trailing strip to remove the width deviation portion of the strip (S703-S715), and the step of repositioning the equipment (S716). . In the present invention described below, a case where the state where the trailing strip end portion removing knife portion 100A is placed at the strip removing position (the right position on the drawing) is set to the original position will be described.

Here, the strip width deviation removing steps S703-S715 may be divided into two cases, in which the preceding strip is large and the trailing strip is large.

First, the processing operation when the width of the preceding strip is large is as follows.

Separating the body fixing cylinder from the cylinder connecting rod by reversing (S705); and stepping backward the traverse cylinder so that the notch body part is not caught by the traverse cylinder (S706), and the preceding strip rear end knife portion 100B. ) Checks whether the touch sensor is operated while rotating the notch main body by returning the turntable rotating cylinder to return to the strip removing position (S707, S708), and when the touch sensor is confirmed, the forward traverse cylinder is traced forward. (S709) and the step (S710) to advance the body fixing cylinder to secure the cylinder connecting rod, and confirming whether the strip sensor is detected while forwarding the traverse cylinder (S711, S712) And, if the operation of the strip sensor is confirmed, the speed detector starts counting and traverses By the operation of the knife step (S713, S714) for stopping a step (S715) and a step (S716) to the equipment in place of the operation of removing the strip.

Next, the processing operation when the width of the following strip is large is as follows.

In this case, since the trailing strip end portion removing knife portion 100A is in the original position as the strip removing position, the operation of the notch body rotating part is not necessary, and immediately confirms whether the strip sensor is detected while forwarding the traverse cylinder ( S711 and S712, and when the operation of the strip sensor is confirmed, starting the speed detector to start the counting operation and stopping the traverse cylinder (S713 and S174), removing the strip by operating the knife (S715), and the operation It is made to the step (S716) to place the installed equipment.

Referring to the overall operation and the effects of the present invention configured as described above are as follows.

Strip width deviation elimination apparatus according to the present invention, if the width of the line, the trailing strip is different (when the width of the trailing strip is large or the width of the preceding strip is large) by using a knife selected by the operator to equal the width of the strip To this end, the width deviation of the trailing strip or the preceding strip is eliminated. The information about the width of the strip is received from the supervisor control computer (SCC) through a link means connected to the host computer. The trailing strips are compared to calculate the width difference.

First, the operation in the case of selecting the trailing strip removing knife portion 100A is as follows.

As shown in FIG. 8, as the traverse cylinder 300-10 is forwarded, the notch body 100-20 is advanced (moved to the right side in the drawing), and next to the lower knife of the notch body 100-20 being advanced. When the edge of the trailing strip is detected by the installed strip sensor (100-40), the speed detector (300-30; PLG) installed next to the traverse cylinder (300-10) is counted to proceed further by the width deviation calculated by the electric controller and then stopped. As the upper knife up / down cylinder 100-1 is down, the upper knife 100-3a is operated to remove the width deviation portion of the trailing strip.

After the removal of the width deviation portion of the trailing strip is completed, the upper knife up / down cylinder 100-1 is raised to return the upper knife 100-3a to the original position, where the lower knife 100- 4a) is stationary and should be free of flow. The operation of the upper and lower knives is performed by detecting the up / down of the knife by the magnetic sensor 100-5 attached to the up / down cylinder 100-1 itself. After the upper knife 100-3a is returned to its original position, the traverse cylinder 300-10 is backward to move the notch main body 100 to its original home position.

 At this time, the notch body portion 100 is a trailing strip removal knife portion 100A is placed in the strip removal position (right side in the drawing).

Next, when the width of the preceding strip is large and the deviation of the width of the preceding strip needs to be removed, as shown in FIGS. 9A and 9B, the traverse fixing connecting the traverse cylinder 300-10 and the notch body part 100 is performed. The rod of the body fixing cylinder 300-22 is separated from the pins 300-23 so that the notch body 100 is free from the turntable seat 200-60 as shown in FIG. 9A. The traverse cylinder 300-10 is then moved slightly back so that the notch body 100 is not caught by the traverse cylinder 300-10 when the turntable 200-10a is rotated. At this time, the movement amount of the traverse cylinder 300-10 is operated based on the count value of the speed detector 300-30.

Afterwards, by turning the turntable rotating cylinder 200-50a to rotate the turntable 200-10a, the knife of the notch body portion 100 located above the turntable 200-10a moves from the trailing strip removing position to the preceding strip removing position. Will change direction. At this time, when the touch sensor 200-40 is operated by the sensor touch bar 100-25 installed for accurate centering of the notch main body 100, the turntable rotating cylinder 200-50a stops operating. Subsequently, the traverse cylinder 300-10 is slightly forwarded so that the notch body 100-20 and the cylinder connecting rod 300-10b of the traverse cylinder 300-10 are coupled as shown in FIG. 9B, and then the cylinder connecting rod 300-10b. By fastening the rod of the body fixing cylinder (300-22) through the traverse fixing pin (300-23), the notch body portion 100 is interlocked in accordance with the forward or backward operation of the traverse cylinder (300-10) It becomes possible.

The preceding strip removing operation thereafter is as shown in Fig. 10, and is operated in the same manner as the trailing strip removing operation.

The strip welding in the trimming process after use of the present invention is shown in FIG. 11, and as can be seen from this figure, normal trimming is achieved by allowing welding to have the same width at the preceding strip and the trailing strip connection. The tearing of the weld plate during the trimming operation due to the width deviation can be prevented.

According to the present invention, if the width variation of the leading and trailing coils is severe when the hot rolled coil is welded, the welding is performed at the same width by removing the width deviation before welding, and after the welding, normal trimming is performed, so that the welding part is trimmed by the width deviation. Plate tearing is prevented, and this prevents abnormal work such as welding delay and TCM gap opening work, which can solve the main cause of falling error rate of cold rolled PCM line.

Claims (4)

Upper and lower straight knives for removing the leading strip trailing edge and upper and lower straight knives for removing the trailing strip leading edge, respectively, on both sides of the notch body portion for selectively removing the leading and trailing strip leading edges. ; A notch body rotator for mounting the notch body portion on an upper surface and rotating the notch body portion so that the preceding strip rear end and the trailing strip front end can be selectively removed; A notch body traverse portion for moving the notch body portion such that the notch body portion is linearly moved between the upper surface of the notch body rotating portion and the strip removing position; And And a notch traveling rail unit which ensures a stable linear reciprocating motion of the notch body portion between the upper surface of the notch body rotating portion and the strip removing position. The removal line of the leading strip trailing end is connected to the side facing the trailing strip of the leading strip and to the neighboring side thereof, and the removal line of the trailing strip leading end is the side of the trailing strip facing the preceding strip. Weld strip width deviation removing device, characterized in that connected to the adjacent surface. The method of claim 1, wherein the notch body portion, A notch body having openings at both sides of the leading strip trailing end and the trailing strip leading end respectively for partial insertion; A knife seating groove formed at a lower portion of the opening and fixedly receiving the lower straight knife; An up / down cylinder mounted to the notch body and moving the upper straight knife to allow the upper straight knife to be drawn into or withdrawn from the knife seating groove; And And a strip sensor for detecting a strip inserted into the opening of the notch body. The upper straight knife and the lower straight knife remove the preceding strip rear end and the trailing stiff tip while sliding while the upper straight knife is brought into the knife seat without contact with each other. Strip width deviation eliminator The method of claim 1, wherein the notch body traverse portion, A traverse cylinder that secures and attaches a rod to a side of the notch body portion to provide power for advancing or retracting the notch body portion to a strip removal position; And a speed detector installed in parallel with the rod of the traverse cylinder and forming a plurality of gears to count a position according to the forward and backward operation of the traverse cylinder, and a count bar thereof. The method of claim 1, wherein the notch body rotating unit, A turntable inserted in the seating table so as to be rotated by the bearing and the support by inserting a turntable support with a bearing therebetween, and forming a cylindrical gear on an outer circumferential surface to rotate the notch main body with a driving force provided from the outside; Rotating the turntable clockwise or counterclockwise by engaging two gears when the turntable driving bar is moved horizontally by connecting a turntable driving bar having a gear that can engage with the cylindrical gear of the turntable in the longitudinal direction. A turntable rotating cylinder installed to be capable of being made; And a touch sensor installed on one side of the turntable and detecting a rotation state of the notch main body, and a touch bar thereof.

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