JP6005970B2 - Blast processing apparatus and blast processing method - Google Patents

Description

  Embodiments described herein relate generally to a blast processing apparatus and a blast processing method.

  Conventionally, blasting is known as a surface treatment technique in which hard particles are jetted by compressed air and collide with the surface of a workpiece such as a machined part or a painted part. According to the blast treatment, rust and dirt on the workpiece surface can be removed. For this reason, the blast treatment is mainly used for surface treatment such as paint peeling and shot peening as well as ground treatment such as painting.

  The blasting process is performed by injecting a blasting material together with compressed air from a blasting process nozzle toward a workpiece. For this reason, in the blast treatment, it is a problem to prevent the sprayed blast material from being scattered. Therefore, in order to prevent the blast material from scattering, there is provided a blast processing apparatus having a structure in which a pipe for collecting the blast material is provided in the vicinity of the nozzle for injecting the blast material and the nozzle and the pipe for collecting are covered with a casing. It has been proposed (see Patent Document 1, Patent Document 2, and Patent Document 3, for example).

JP-A-8-252769 JP 2000-190226 A JP 2004-25351 A

  However, the conventional blasting apparatus has a problem that it is difficult to perform a blasting process on a rough surface or a workpiece having a large area. For example, when there is unevenness on the surface of the workpiece, interference with the workpiece occurs when a casing for preventing the blast material from scattering is installed. On the other hand, if the casing for preventing scattering is kept away from the workpiece or the casing for preventing scattering is removed, it is not possible to prevent the blast material from scattering.

  Further, when the blast material is scattered, there is a problem that dust of the blast material is mixed in a driving unit such as a link mechanism. For this reason, when large workpieces that require moving the blasting material injection nozzle are targeted for blasting, the nozzle is moved with an articulated manipulator that covers the joint with a dustproof cover. The measure of moving is taken.

  However, when an articulated manipulator is used, the movement range of the nozzle is limited depending on the indirect length of the manipulator. For this reason, when the size of the workpiece is extremely large, it is necessary to prepare a manipulator having a very long joint according to the size of the workpiece.

  In particular, the length of a panel for an outer plate, which is one of aircraft parts, is on the order of a metric class, and many protrusions such as stringers are fixed. For this reason, it is difficult to use a conventional blasting apparatus for an aircraft panel. As a result, the present situation is that manual work is performed by the operator to polish the workpiece with sandpaper as the ground treatment before painting the aircraft panel.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a blast processing apparatus and a blast processing method that can flexibly adapt to the size and shape of a workpiece and perform blast processing.

A blasting apparatus according to an embodiment of the present invention includes an injection unit, a non-armed moving mechanism, and dustproof means. The injection unit injects a blast material onto a blast process target. A moving mechanism reciprocates the said injection part along a track | orbit. The dustproof means prevents the blast material from entering at least a part of the moving mechanism. The moving mechanism includes a first moving body and a second moving body. The first moving body reciprocates along the first trajectory together with the injection unit. The second moving body reciprocates the first track along a single or a plurality of second tracks. The second moving body is configured to reciprocate the first track in the same direction as the first track.
Moreover, the blast processing apparatus which concerns on embodiment of this invention is provided with the injection part, the moving mechanism which is not an arm type | mold, and a dust-proof means. The injection unit injects a blast material onto a blast process target. A moving mechanism reciprocates the said injection part along a track | orbit. The dustproof means prevents the blast material from entering at least a part of the moving mechanism. The moving mechanism includes a first moving body and a second moving body . The first moving body reciprocates along the first trajectory together with the injection unit. The second moving body reciprocates the first track along a single or a plurality of second tracks. The blast processing apparatus further includes a supply tank. The supply tank moves together with the first moving body or the second moving body, and supplies the blast material to the injection unit.
Moreover, the blast processing apparatus which concerns on embodiment of this invention is provided with an injection part, the moving mechanism which is not an arm type | mold, dustproof means, and a supply tank. The injection unit injects a blast material onto a blast process target. A moving mechanism reciprocates the said injection part along a track | orbit. The moving mechanism includes a moving body that moves together with the ejection unit. The dustproof means prevents the blast material from entering at least a part of the moving mechanism. A supply tank moves with the said mobile body, and supplies the said blast material to the said injection part.
Further, the blasting method according to the embodiment of the present invention includes a step of injecting a blast material from an injection unit onto a target for blasting, a step of reciprocating the injection unit along a track by a non-arm type moving mechanism, and a dustproof Preventing the blast material from entering at least a portion of the moving mechanism by means. The moving mechanism includes a first moving body and a second moving body. The first moving body reciprocates along the first trajectory together with the injection unit. The second moving body reciprocates the first track along a single or a plurality of second tracks. The second moving body is configured to reciprocate the first track in the same direction as the first track.
Further, the blasting method according to the embodiment of the present invention includes a step of injecting a blast material from an injection unit to a target for blasting, a first moving body that reciprocates along the first trajectory together with the injection unit, A second moving body that reciprocally moves the first track along a single or a plurality of second tracks, and the non-armed moving mechanism moves the injection unit to the first A step of reciprocating along a track and the second track, a step of preventing entry of the blast material into at least a part of the moving mechanism by dust-proofing means , and the first moving body or the second And supplying the blast material to the injection unit with a supply tank that moves together with the moving body .
Further, the blasting method according to the embodiment of the present invention is a moving mechanism having a step of injecting a blast material from an injection unit onto an object to be blasted, and a moving body that moves together with the injection unit, the movement not being an arm type A step of reciprocating the injection section along a track by a mechanism; a step of preventing the blast material from entering at least a part of the moving mechanism by a dustproof means; and a blasting unit in a supply tank that moves together with the moving body. Supplying a material to the injection unit.

  According to the blast processing apparatus and the blast processing method according to the embodiment of the present invention, it is possible to flexibly adapt to the size and shape of the workpiece and perform the blast processing.

The top view of the blast processing apparatus which concerns on the 1st Embodiment of this invention. The arrow view of the front direction seen from position AA of the blast processing apparatus shown in FIG. The top view which shows the structure of the part accompanying the 1st moving body and the 1st moving body in the blast processing apparatus which concerns on the 2nd Embodiment of this invention. The cross-sectional view in position BB which shows the structure of the 1st track | orbit for moving the 1st moving body and 1st moving body which are shown in FIG. The top view which shows the structure of the part accompanying the 1st moving body and 1st moving body in the blast processing apparatus which concerns on the 3rd Embodiment of this invention. The cross-sectional view in position CC which shows the structure of the opening / closing cover shown in FIG. The top view which shows the structure of the part accompanying the 1st moving body and the 1st moving body in the blast processing apparatus which concerns on the 4th Embodiment of this invention. The cross-sectional view in position DD which shows the structure of the 1st moving body shown in FIG. 7, and the partition for dustproof.

  A blast processing apparatus and a blast processing method according to embodiments of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
(Configuration and function)
FIG. 1 is a top view of the blast processing apparatus according to the first embodiment of the present invention, and FIG. 2 is a front view as viewed from the position AA of the blast processing apparatus 1 shown in FIG. However, in FIG. 2, components that are not visible in terms of the control system and the piping system are shown for convenience.

  The blast treatment device 1 is a device that performs a blast treatment by injecting a blast material M with compressed air onto a workpiece W to be blasted. 1 and 2 show an example in which an aircraft panel is used as a work W. FIG. Specifically, the panel to be the workpiece W has a structure in which a plate-like member is curved and a number of stringers having an I-shaped cross section are fixed to the surface on the concave curved surface side. For this reason, the surface to be blasted is a surface having a very wide curved surface and unevenness.

  The blast material M used as a blasting medium is composed of hard particles such as steel grit, steel shot, cut wire, alumina, glass beads, and silica sand. The blast treatment is applied for various purposes such as paint removal, rust removal, roughening, cosmetic finishing, deburring, shot peening, etc., in addition to coating, plating or thermal spraying.

  The blasting device 1 includes an injection unit 2, a moving mechanism 3, a media supply tank 4, a table 5, and a circulation system 6 so that the blasting can be flexibly adapted to the size and shape of the workpiece W. .

  The injection unit 2 is a component of the blast processing apparatus 1 for injecting the blast material M onto the workpiece W. For this reason, the injection unit 2 is provided with a nozzle 7 for injecting the blast material M toward the work W by flowing compressed air and a head 8 for mounting the nozzle 7. Moreover, the injection part 2 can be provided with two or more as needed. 1 and 2 show an example in which two injection parts 2 are provided on both sides of a plate-like workpiece W, respectively.

  The moving mechanism 3 is configured to reciprocate at least the injection unit 2 along a track corresponding to the shape of the workpiece W. Desirably, the moving mechanism 3 is configured using the first moving body 9, the second moving body 10, and the control system 3A.

  The first moving body 9 is configured to reciprocate along the first track O1 together with the injection unit 2 under the control of the control system 3A. On the other hand, the second moving body 10 is configured to reciprocate the first track O1 along a single or a plurality of second tracks O2 under the control of the control system 3A. In this way, by moving the first trajectory O1 itself, which is the moving path of the first moving body 9, by the second moving body 10, the injection unit 2 can be moved in a plurality of axial directions.

  As a specific example, each moving mechanism 3 can be configured using a device capable of reciprocating along a track such as a single or a plurality of transporters, lifts, gondolas, hoists and the like. Furthermore, each device can be configured by an arbitrary mechanism such as a wire moving by a pulley or a caterpillar chain.

  1 and 2 illustrate a moving mechanism 3 using a caterpillar chain 11 that moves by rotation of a rotating shaft as a first moving body 9 and a triaxial drive mechanism 12 as a second moving body 10. An example is shown. Moreover, in the example shown in FIG.1 and FIG.2, two pairs of the injection parts 2 are provided in the both sides of the workpiece | work W. FIG. For this reason, two movement mechanisms 3 for moving the two injection units 2 are provided in the blast processing apparatus 1.

  The triaxial drive mechanism 12 is a drive mechanism having control axes in three axial directions of the X axis, the Y axis, and the Z axis. Accordingly, in the example shown in FIGS. 1 and 2, a linear orbit in the three-axis directions of the X axis, the Y axis, and the Z axis is formed as the second orbit O2. However, the three-axis drive mechanism 12 is provided with two control axes in the Y-axis direction. For this reason, it is also possible to form a rotational trajectory by changing the control amounts of the two control axes in the Y-axis direction. Therefore, a trajectory that combines a linear trajectory, a rotational trajectory, and a linear trajectory with a rotational trajectory can be formed as the second trajectory O2.

  More specifically, the triaxial drive mechanism 12 includes a lift mechanism 13, a horizontal transport mechanism 14, and an inclination mechanism 15. The lift mechanism 13 has a structure in which the stage 13B moves in the vertical direction between the two structural support columns 13A installed vertically. The horizontal transport mechanism 14 has a structure in which the transport body 14A moves along a horizontal trajectory installed on the stage 13B of the lift mechanism 13.

  In the example shown in FIGS. 1 and 2, the workpiece W is placed on the table 5 so that the moving direction of the transport body 14 </ b> A of the horizontal transport mechanism 14 is substantially the width direction of the plate-shaped workpiece W. In addition, the workpiece | work W can also be installed on the table 5 through the jig | tool according to the shape of the workpiece | work W as needed. Further, instead of the table 5 or in addition to the table 5, the workpiece W may be set using a hanging jig for hanging the workpiece W.

  The tilt mechanism 15 can be constituted by a gondola 15B in which two cylinder mechanisms 15A are connected. The two cylinder mechanisms 15 </ b> A are connected to the transport body 14 </ b> A of the horizontal transport mechanism 14. The expansion / contraction direction of the cylinder mechanism 15A is a horizontal direction perpendicular to the moving direction of the transport body 14A. Therefore, the gondola 15B can be inclined on the horizontal plane by independently controlling the amount of expansion / contraction of each cylinder mechanism 15A. Further, if the expansion / contraction amount of each cylinder mechanism 15A is the same, the gondola 15B can be translated in a horizontal direction perpendicular to the moving direction of the transport body 14A.

  The moving direction of the stage 13B of the lift mechanism 13 can be defined as the Z axis, the moving direction of the transport body 14A of the horizontal transport mechanism 14 as the X axis, and the expansion / contraction direction of the cylinder of the tilt mechanism 15 as the Y axis. However, depending on the shape of the workpiece W, a drive mechanism having an arbitrary number and control axes in any direction can be used.

  One caterpillar chain 11 used as the first moving body 9 is installed on a gondola 15B of the tilt mechanism 15. Further, one injection unit 2 is attached to one caterpillar chain 11. Accordingly, as many chains 11 as the number of injection units 2 are provided on the gondola 15B. That is, two injection parts 2 and two chains 11 are installed in one gondola 15B.

  The first track O1 that becomes the movement path of the chain 11 can be arbitrarily determined according to the shape of the workpiece W. In the example shown in FIGS. 1 and 2, the first track O <b> 1 serving as the movement path of the chain 11 is configured to be in the X-axis direction when the expansion / contraction amount of the cylinder of the tilt mechanism 15 is the same. Therefore, in order to avoid interference between the two injection units 2 provided on one gondola 15B, the two chains 11 can be provided in parallel to each other in the horizontal direction so that the heights are different. Thereby, the movement range of the two injection units 2 can be lengthened while avoiding interference between the two injection units 2. However, the two chains 11 may be installed on the gondola 15B at the same height so as not to overlap.

  As described above, the three-axis drive mechanism 12 used as the second moving body 10 reciprocates the first trajectory O1 serving as the moving path of the first moving body 9 in the same direction as the first trajectory O1. Configured to be able to. Therefore, even when the width of the workpiece W is large, the stroke of the first moving body 9 can be set in a range smaller than the width of the workpiece W. In other words, it is possible to perform the blasting process for the workpiece W having a width larger than the stroke of the first moving body 9. For this reason, by reducing the weight of the first moving body 9, the rigidity required for the three-axis drive mechanism 12 used as the second moving body 10 can be reduced.

  In the example shown in FIGS. 1 and 2, all the tracks including the first track O1 are linear. However, depending on the shape of the workpiece W, a desired track may be curved. Accordingly, the first moving body 9 is not limited to the caterpillar chain 11 and can be configured by using any traveling means such as a wheel that moves along the rail.

  Further, as illustrated in FIGS. 1 and 2, when a plurality of nozzles 7 for injecting media onto the blasting target are installed on the gondola 15 </ b> B, they cannot be ignored as the nozzles 7 move. There is a risk of vibration.

  Therefore, when an even number of the plurality of nozzles 7 are installed on the gondola 15B, the moving mechanism 3 moves the plurality of nozzles 7 symmetrically so as to cancel the vibration caused by the movement of the plurality of nozzles 7. Can be configured. Specifically, a control signal for moving the plurality of nozzles 7 symmetrically from the control system 3 </ b> A can be output to the first moving body 9.

  Thereby, the vibration accompanying the movement of the nozzle 7 can be reduced. In other words, by providing an even number of nozzles 7 on the gondola 15B, it is possible to reduce vibration due to the movement of the nozzles 7.

  In the example shown in FIGS. 1 and 2, the two nozzles 7 reciprocate in parallel with each other in the horizontal direction on the gondola 15 </ b> B together with the injection unit 2. For this reason, it is possible to perform control to move the two nozzles 7 so as to be two-dimensionally line symmetric when viewed from one direction. That is, the movement control of each nozzle 7 can be performed so that the movement distances of the first nozzle 7 and the second nozzle 7 are the same and the movement directions are opposite to each other.

  However, in the case where the first trajectory O1 has two or more directions and the first moving body 9 to which the two nozzles 7 are fixed can move two-dimensionally on the plane, the point on the two-dimensional plane The movement control of the plurality of nozzles 7 can be performed so as to be symmetric or line symmetric. Similarly, when the plurality of nozzles 7 can move three-dimensionally in the three-dimensional space together with the first trajectory O1, the movement control of the plurality of nozzles 7 is made point-symmetric or plane-symmetric in the three-dimensional space. It can be performed.

  The inclination angle of the nozzle 7 with respect to the head 8 can be fixed or variable. When the inclination angle of the nozzle 7 with respect to the head 8 is fixed, the nozzle 7 can be inclined with respect to the head 8 in accordance with the shape of the workpiece W. In the example shown in FIGS. 1 and 2, the two nozzles 7 on the side where the workpiece W becomes a convex curved surface are fixed without being inclined with respect to the head 8. For this reason, the inclination with respect to the workpiece | work W of the gondola 15B can be adjusted by extending / contracting the two cylinder mechanisms 15A responsible for the control in the Y-axis direction, and the nozzle 7 can be directed substantially perpendicular to the curved surface of the workpiece W.

  On the other hand, the two nozzles 7 on the concave curved surface side of the workpiece W to which the stringer is attached are inclined to the sides facing each other. Accordingly, the gondola 15B and the first track O1 are inclined in the width direction along the curved surface of the workpiece W by extending and contracting the two cylinder mechanisms 15A responsible for the control in the Y-axis direction, so The medium as the blast material M can be sprayed toward the head. For example, if each nozzle 7 is inclined 45 degrees with respect to the head 8, the medium is ejected onto the workpiece W at an incident angle of 45 degrees, and the medium bounced off at a reflection angle of 45 degrees collides with the surface of the stringer. it can.

  Further, the tilt angle of the nozzle 7 with respect to the head 8 can be variably controlled. When the inclination angle of the nozzle 7 is variable, the moving mechanism 3 for changing the inclination of the nozzle 7 is provided on the gondola 15B. As the moving mechanism 3 for changing the inclination of the nozzle 7, any moving mechanism 3 such as a rotating shaft held by a support can be used. That is, any moving mechanism 3 can be used as long as the angle of the nozzle 7 provided in the injection unit 2 can be adjusted.

  As an example of simple control of the tilt angle of the nozzle 7, when the nozzle 7 reaches the end of the first track O1 along the first track O1, the tilt of the nozzle 7 is directed toward the other nozzle 7 side. And control to invert the line symmetrically. For example, when the nozzle 7 is inclined 45 degrees with respect to the head 8, one nozzle 7 can be inclined 90 degrees toward the other nozzle 7 at the stroke end.

  Further, as described above, the tilt movement of the two nozzles 7 can be performed symmetrically with respect to the tilt movement of the nozzles 7 so that the vibration is canceled. Therefore, if the horizontal movement of the two nozzles 7 and the reverse movement of the inclination at the stroke end are performed symmetrically, the relative positions of the two nozzles 7 in the X-axis and Y-axis directions again when the two nozzles 7 become the stroke ends. Can be restored to its original state. For this reason, the same blasting process can be executed in the forward path and the backward path of the two nozzles 7.

  Of course, you may enable it to control the inclination of the nozzle 7 in a 360 degree direction. In this case, if the nozzles 7 are controlled so that the inclination directions of the even number of nozzles 7 are spatially symmetrical, the vibration accompanying the change in the angle of the nozzles 7 can be reduced.

  The moving mechanism 3 is configured to move the ejection unit 2 using a mechanism that is not an arm type using a joint as described above, that is, a control axis other than the rotation axis. For this reason, the malfunction by the approach of the blast material M to the operation | movement part of the moving mechanism 3 for moving the injection part 2 becomes a subject. Therefore, the moving mechanism 3 is provided with dustproof means for preventing the blast material M from entering at least a part of the moving mechanism 3.

  In the example shown in FIGS. 1 and 2, a dustproof cover 16 is provided as a dustproof means for preventing the blast material M from entering the two cylinder mechanisms 15A responsible for the control of the gondola 15B in the Y-axis direction. That is, the dustproof cover 16 that covers the cylinder mechanism 15A by connecting the gondola 15B and the transport body 14A of the horizontal transport mechanism 14 can be provided as dustproof means. The width of the gap between the gondola 15B and the transport body 14A of the horizontal transport mechanism 14 changes depending on the expansion and contraction of the cylinder mechanism 15A. For this reason, if the bellows cover is used as the dust-proof cover 16, the dust-proof cover 16 can follow the expansion and contraction of the cylinder mechanism 15A.

  In the gondola 15B, a medium supply tank 4 for supplying the blast material M to the spray unit 2 can be installed in addition to the spray unit 2 including the nozzle 7 and the chain 11 as the first moving body 9. In this case, the media supply tank 4 moves together with the gondola 15 </ b> B that constitutes a part of the second moving body 10. The media supply tank 4 is connected to the ejection unit 2 via a media supply hose 17.

  On the other hand, an air tank 18 that stores air and an air compressor 19 that takes in air from the air tank 18 and generates compressed air are installed at arbitrary positions. The air compressor 19 is connected to the media supply hose 17 via the compressed air supply pipe 20. The compressed air supplied from the air compressor 19 to the injection unit 2 via the compressed air supply pipe 20 and the medium supply hose 17 is injected from the nozzle 7.

  On the other hand, the blast material M supplied from the media supply tank 4 via the media supply hose 17 is configured to be injected from the nozzle 7 of the injection unit 2 by compressed air. Therefore, the path of the blast material M is only the media supply hose 17 and the head portion of the ejection unit 2. For this reason, it is possible to promote uniform discharge of the blast material M, prevent wear of the piping system due to collision of the blast material M, and reduce pressure loss.

  Note that the medium supply tank 4 may be configured to move together with the first moving body 9 by being fixed to the chain 11 or the injection unit 2 as the first moving body 9. Or you may install in arbitrary positions other than the gondola 15B. However, if the media supply tank 4 is arranged so as to move together with the first moving body 9 or the second moving body 10, the length of the media supply hose 17 is shortened and the uniform discharge of the blast material M is promoted. It is possible to prevent wear of the piping system due to the collision of the blast material M and reduce pressure loss.

  In addition, the blast processing apparatus 1 can include a circulation system 6 that collects the blast material M injected from the injection unit 2 toward the workpiece W and supplies the blast material M to the media supply tank 4. The blast material M may be continuously collected during the injection of the blast material M by the circulation system 6, or may be collected intermittently during the blasting process.

  In particular, aircraft panels are several meters in width and length. For this reason, if the work W is divided into a plurality of virtual areas for blast processing, the blast material M is collected and supplied to the media supply tank 4 after the blast processing of one area is completed. The total amount of blast material M required can be reduced. That is, the entire workpiece W can be blasted with a smaller amount of blast material M than the amount required for the size of the area of the workpiece W. 1 and 2 show an example in which the work W is divided into three processing areas of a first processing area A1, a second processing area A2, and a third processing area A3.

  The circulation system 6 can be constituted by, for example, a media recovery duct 21, a media recovery hose 22, and a blower 23. It is preferable that the media recovery duct 21 has a size and a position that can cover a range in which the sprayed blast material M can fall. The media recovery duct 21 can be formed of a saucer-like structure whose inner surface is inclined downward. An outlet for discharging the blast material M is provided at the lowermost portion of the media recovery duct 21. For this reason, the blast material M dropped and recovered on the media recovery duct 21 is discharged from the outlet by its own weight.

  However, a vibration device 24 that vibrates the media recovery duct 21 may be provided so that the blast material M is quickly discharged from the outlet of the media recovery duct 21. That is, by vibrating the media recovery duct 21 by the vibration device 24, the blast material M attached to the inner wall surface of the media recovery duct 21 can be shaken off toward the outlet.

  One end of a media recovery hose 22 is connected to the outlet of the media recovery duct 21. The other end of the media recovery hose 22 is connected to the media supply tank 4. A blower 23 is installed at an arbitrary position, preferably on the media recovery tank. For example, the blower 23 is disposed so as to suck the air in the media recovery hose 22 and send it out upward outside the media supply tank 4. For this reason, the blast material M in the media recovery hose 22 is guided into the media supply tank 4 by the air flow.

  The blast material M introduced into the media supply tank 4 can be dropped to the bottom side of the media supply tank 4 by its own weight. In addition, it is desirable to provide a filter 4A in the media supply tank 4 so that the blast material M is not discharged out of the media supply tank 4 on the air flow. In addition, a desired device such as a belt conveyor can be used to smoothly move the blast material M discharged from the media recovery duct 21.

  In the example shown in FIGS. 1 and 2, the circulation system 6 is provided for each moving mechanism 3, but a common circulation system 6 may be provided. In this case, the media supply hose 17 branches to the media supply tank 4 installed on the plurality of gondola 15B.

  In addition to the above-described components, it is practical to cover the entire triaxial drive mechanism 12 and the workpiece W with a dustproof cover. However, in order to show the detailed structure of the blast treatment apparatus 1, the illustration of the dustproof cover is omitted.

(Operation and action)
Next, the operation and action of the blast processing apparatus 1 will be described.

  First, the media supply tank 4 is filled with the blast material M in advance. On the other hand, an aircraft panel having unevenness and a curved surface is set on the table 5 as a work W to be blasted.

  Next, the triaxial drive mechanism 12 is driven by the triaxial control by the control system 3A, and the gondola 15B is positioned at the initial position. For example, the lowest part of the first processing area A1 virtually set for the workpiece W can be set as the initial position of the gondola 15B.

  Next, the cylinder mechanism 15A expands and contracts according to the control command in the Y-axis direction output from the control system 3A, and the inclination of the gondola 15B with respect to the workpiece W is adjusted. In addition, the two nozzles 7 mounted on the common gondola 15B have their initial positions at the ends on the different sides of the first track O1. Further, if the angle of the nozzle 7 can be adjusted, the angle of the nozzle 7 is adjusted as appropriate. As a result, each nozzle 7 has an angle suitable for blasting according to the shape of the curved surface of the workpiece W.

  Such filling of the blast material M into the medium supply tank 4, the movement of the gondola 15B to the initial position, and the adjustment of the inclination angles of the gondola 15B and the nozzle 7 are performed on both sides of the workpiece W, respectively.

  Next, the air compressor 19 operates to take in air from the air tank 18 and generate compressed air. The generated compressed air is supplied into the media supply hose 17 via the compressed air supply pipe 20. Further, the compressed air is supplied to the ejection unit 2 via the medium supply hose 17.

  On the other hand, the blast material M is discharged from the media supply tank 4 into the media supply hose 17. For this reason, the blast material M is supplied to the injection unit 2 through the medium supply hose 17 by the flow of compressed air. As a result, the blast material M is injected from the nozzle 7 together with the compressed air.

  The four nozzles 7 arranged with the workpiece W interposed therebetween are each directed at an appropriate angle with respect to the workpiece W. Specifically, the two nozzles 7 directed to the workpiece W forming a convex curved surface are substantially perpendicular to the surface of the workpiece W. On the other hand, the two nozzles 7 directed to the concave curved surface of the workpiece W to which the I-type stringer is fixed are inclined at a constant inclination angle.

  Accordingly, the blast material M is ejected from each nozzle 7 toward the workpiece W at an angle suitable for blasting. In particular, the blast material M injected to the concave surface side of the workpiece W has a predetermined incident angle. For this reason, the blast material M rebounds on the concave curved surface of the workpiece W and collides with the I-type stringer. Thereby, the surface of the I-type stringer can be blasted.

  Subsequently, the four chains 11 move along the first track O1 under the control of the control system 3A. Accordingly, the nozzle 7 and the head 8 fixed to each chain 11 move along the first track O1 toward the other end. Thereby, the blasting process can be performed while gradually moving the injection position of the blast material M in the horizontal direction.

  At this time, the control system 3A can drive and control the four chains 11 so that the two nozzles 7 mounted on the common gondola 15B move symmetrically. Thereby, the vibration accompanying the movement of the nozzle 7 can be reduced.

  When each nozzle 7 reaches the other end of the first track O1, the stage 13B of each lift mechanism 13 is raised under the control of the control system 3A. Along with this, each gondola 15B and each nozzle 7 rise along the workpiece W. Then, the four chains 11 are driven, and the blasting process is executed in the same flow. In addition, when each nozzle 7 inclined with respect to the head 8 reaches the other end of the first track O1, the direction of the nozzle 7 may be reversed in line symmetry.

  When the blasting process of the workpiece W is performed while raising each gondola 15B and each nozzle 7 by driving the lift mechanism 13, the blasting process in the first processing area A1 can be performed. When the blasting process in the first processing area A1 is completed, the triaxial driving mechanism 12 can be driven to similarly execute the blasting process in the second processing area A2.

  If necessary, the injection of the blast material M may be temporarily stopped after the blasting process in the first processing area A1 is completed. Regardless of whether or not the injection of the blast material M is stopped, the blast material M that has collided with the workpiece W and dropped is collected by the media collection duct 21.

  Even if the blast material M colliding with the workpiece W rises, the dust-proof cover 16 prevents the blast material M from entering the cylinder mechanism 15A. Part of the blast material M adhering to the dust cover 16 is shaken off by the expansion and contraction of the dust cover 16 and collected by the media collection duct 21.

  At this time, the vibration device 24 vibrates the media recovery duct 21 as necessary. The blast material M recovered by the media recovery duct 21 is discharged from the outlet of the media recovery duct 21 by gravity and vibration.

  On the other hand, the blower 23 operates continuously or intermittently at an arbitrary timing. For this reason, the blast material M discharged from the media recovery duct 21 is guided into the media supply tank 4 together with the air sucked by the blower 23 from the media recovery hose 22. The blast material M introduced into the media supply tank 4 collides with the filter 4A or remains in the media supply tank 4 due to its own weight.

  As a result, the blast material M injected toward the workpiece W can be reused. Therefore, the total amount of the blast material M required for the blasting process for the entire workpiece W can be reduced. Then, the blasting process for the entire work W can be completed by executing the blasting process in the third processing area A3 following the second processing area A2.

  That is, in the blasting apparatus 1 as described above, the nozzle 7 for injecting the blasting material M is moved using a slide mechanism that reciprocates along the track instead of using the joint mechanism. It is. Furthermore, as a result of using the slide mechanism, a dustproof cover 16 is provided in order to reduce the entry of the blast material M, which is a concern, into the working part.

(effect)
For this reason, according to the blast processing apparatus 1, the movable range of the nozzle 7 for injecting the blast material M can be enlarged. Therefore, blasting can be flexibly adapted to the size and shape of the workpiece W, for example, an aircraft panel having an uneven portion such as an I-type stringer and a very large surface area. It is possible to automatically perform blasting.

  Further, while the movable range of the nozzle 7 itself is limited to some extent, the blasting process can be performed by dividing the large workpiece W into a plurality of processing areas by making the gondola 15B on which the nozzle 7 is mounted movable. . For this reason, the quantity of the blast material M which should be continuously injected can be reduced. Furthermore, by providing the blast processing apparatus 1 with the circulation system 6 for recycling the blast material M, the total amount of the blast material M required for the blast processing can be reduced.

  As a result, devices such as the media supply tank 4 and the air compressor 19 can be reduced in size. Therefore, the amount of power used can be reduced. In addition, the miniaturized media supply tank 4 can be installed in the vicinity of the nozzle 7 on the gondola 15B. Thereby, the length of the media supply hose 17 can be shortened, the uniform discharge of the blast material M can be promoted, the wear of the piping system due to the collision of the blast material M can be prevented, and the pressure loss can be reduced.

  Further, by shortening the movable range of the nozzle 7 itself to some extent, the rigidity required for the first moving body 9 such as the chain 11 that reciprocates along the first track O1 can be reduced. As a result, the gondola 15B can be further reduced in weight and simplified.

  Furthermore, by providing a plurality of nozzles 7 and allowing the nozzles 7 to move symmetrically, vibration due to movement of the nozzles 7 can be reduced while increasing the blasting range per unit time.

(Second Embodiment)
FIG. 3 is a top view showing the configuration of the first moving body and the portion associated with the first moving body in the blast processing apparatus according to the second embodiment of the present invention. 4 is a cross-sectional view at a position BB showing the structure of the first moving body 9 and the first track O1 for moving the first moving body 9 shown in FIG.

  In the blast processing apparatus 1A shown in FIG. 3, the configuration of the first moving body 9 and the portion associated with the first moving body 9 is different from the blast processing apparatus 1 shown in FIG. Since other configurations and operations are not substantially different from the blast processing apparatus 1 shown in FIG. 1, only the first moving body 9 and a portion associated with the first moving body 9 are illustrated, and the same configurations are denoted by the same reference numerals. The description is omitted.

  The first moving body 9 of the blast processing apparatus 1 </ b> A has a structure in which a cylindrical slide portion 30 and a cylindrical female screw 31 are connected by a connecting rod 32.

  On the other hand, a columnar or cylindrical guide 33 and a ball screw 34 are fixed to a gondola 15B constituting a part of the second moving body 10 so as to be parallel to each other. And the 1st track | orbit O1 is formed by connecting the guide 33 parallel to the ball screw 34 and the ball screw 34. FIG. 3 and 4 show an example in which the support plates 35 are fixed to both sides of the gondola 15B so as to face each other, and both ends of the guide 33 and the ball screw 34 are supported by the two support plates 35. FIG. .

  Further, a cylindrical guide 33 is inserted into a through hole formed in the slide portion 30 of the first moving body 9. The fitting tolerance between the through-hole formed in the slide portion 30 and the guide 33 is a tolerance that allows sliding. Therefore, the slide part 30 can be slid linearly along the guide 33.

  In addition, it is desirable from the viewpoint of avoiding adhesion of the blast material M that the slide portion 30 can be slid with respect to the guide 33 in a dry manner without using lubricating oil or the like. As such a slide part 30 and the guide 33, a resin cylindrical body that can be slid along a stainless steel tube is commercially available.

  However, as long as it is possible to slide the slide part 30 along the guide 33, the slide part 30 and the guide 33 may be formed using other materials. Moreover, it is good also as a rail which has desired cross-sectional shape, without making the shape of the guide 33 cylindrical or column shape. In this case, the shape of the slide portion 30 may be a shape corresponding to the cross-sectional shape of the guide 33 so that the slide portion 30 can slide without falling off the rail.

  On the other hand, the female screw 31 of the first moving body 9 is fitted into the ball screw 34. The ball screw 34 is configured to be rotated by a motor 36. The motor 36 for rotating the ball screw 34 can be controlled by the control system 3A.

  Therefore, when the motor 36 is driven under the control of the control system 3A to rotate the ball screw 34, the female screw 31 of the first moving body 9 moves in the axial direction of the ball screw 34. That is, the female screw 31 of the first moving body 9 translates in a direction corresponding to the rotation direction of the ball screw 34. Therefore, the slide portion 30 integrated with the female screw 31 moves in parallel along the guide 33 parallel to the ball screw 34. That is, the first moving body 9 can be moved along the guide 33 by the rotation of the ball screw 34.

  Then, the ejection unit 2 can be fixed on an arbitrary part of the first moving body 9, for example, the slide unit 30. Furthermore, the first moving body 9 for attaching the injection unit 2 and the ball screws 34 and the guides 33 for slidingly moving the first moving body 9 can be provided by the number of the injection units 2.

  In the example shown in FIGS. 3 and 4, two first moving bodies 9, ball screws 34, and guides 33 are installed on the gondola 15 </ b> B at different heights in order to attach the two injection units 2. Thereby, each injection part 2 can be moved along the 1st track | orbit O1, respectively. 3 and 4, the illustration of the injection unit 2 is omitted in order to clearly show the structure of the first moving body 9.

  As a specific operation, the position of the first moving body 9 and the injection unit 2 can be controlled by controlling the motor 36 by the control system 3A and adjusting the rotation direction and the rotation amount of the ball screw 34. On the other hand, the presence of the guide 33 makes it possible to drive the first moving body 9 and the injection unit 2 linearly and stably.

  Furthermore, a dustproof means for preventing the blast material M from entering the operating portion of the first moving body 9 can be provided. 3 and 4 show an example in which dustproof means are provided on both the slide portion 30 and the female screw 31 constituting the first moving body 9.

  More specifically, a gap for flowing air is formed in the slide portion 30. In the example shown in FIGS. 3 and 4, the slide portion 30 is provided with a number of air holes 37 in the length direction, and the air holes 37 are connected to each other by a circumferential air passage groove 38. Further, the air passage groove 38 communicates with the outside of the slide portion 30 through an air supply port 39.

  On the other hand, a dustproof air tank 40 and a dustproof air compressor 41 are installed at arbitrary positions. The output side of the dust-proof air compressor 41 is connected to the air supply port 39 of the slide portion 30 via the dust-proof air supply hose 42. The dustproof air compressor 41 is configured to operate in accordance with a control signal from the control system 3A. That is, the dustproof air compressor 41 is configured to compress the air taken in from the dustproof air tank 40 and to flow the compressed air into the air supply port 39 of the slide portion 30.

  As a result, it is possible to form a flow of air that blows out from the gap of the air hole 37 or the like formed inside the slide portion 30 toward the outside of the slide portion 30. Accordingly, it is possible to prevent the blast material M from entering the vicinity of the slide portion 30 and the gap between the slide portion 30 and the guide 33.

  In addition, not only the slide part 30 of the 1st mobile body 9, but the space | interval for flowing air to the arbitrary site | parts of the moving mechanism 3 can be formed. Then, by blowing a gas such as air into the gap formed in the moving mechanism 3, the blast material M can be prevented from entering the gap. That is, a gas supply system such as air can be used as the dustproof means.

  On the other hand, it is possible to provide a dustproof means for preventing the blast material M from entering the tightening portion between the female screw 31 and the ball screw 34 of the first moving body 9. As a specific example, as shown in FIG. 3 and FIG. 4, a dustproof cover that covers at least the injection unit 2 side of the ball screw 34 and expands and contracts in the length direction of the ball screw 34 following the movement of the first moving body 9. The cover 43 can be provided as a dustproof means. A bellows cover can be used as the cover 43 that can be expanded and contracted. For example, as shown in FIGS. 3 and 4, if the ball screw 34 is sealed with a bellows cover and the connecting rod 32 protrudes from the bellows cover, a dustproof effect on the ball screw 34 can be obtained satisfactorily.

  That is, the blast treatment apparatus 1A according to the second embodiment is provided not only with the cylinder mechanism 15A constituting the moving mechanism 3 but also with the first moving body 9 with dust-proof means for preventing the blast material M from entering. It is a thing. In other words, the blast treatment apparatus 1A according to the second embodiment is structured such that the structure of the first moving body 9 can be easily provided with dust-proof means for preventing the blast material M from entering. It is a thing.

  For this reason, according to the blast treatment apparatus 1A in the second embodiment, in addition to the same effect as the blast treatment apparatus 1 in the first embodiment, the dust-proof effect of the blast material M on the moving mechanism 3 can be further improved. Can do.

(Third embodiment)
FIG. 5 is a top view showing a configuration of a first moving body and a portion associated with the first moving body in a blast processing apparatus according to a third embodiment of the present invention. 6 is a cross-sectional view at a position CC showing the structure of the opening / closing cover 44 shown in FIG.

  In the blast treatment apparatus 1B shown in FIG. 5, the structure of the dustproof means for preventing the blast material M from entering the ball screw 34 is different from the blast treatment apparatus 1A shown in FIG. Since other configurations and operations are not substantially different from the blast processing apparatus 1A shown in FIG. 3, only the first moving body 9 and a portion associated with the first moving body 9 are shown, and the same reference numerals are used for the same configurations. The description is omitted.

  In the blast treatment apparatus 1B, an opening / closing cover 44 that opens and closes following the movement of the first moving body 9 is provided as dust-proof means for the ball screw 34 at least on the injection unit 2 side of the ball screw 34. As the opening / closing cover 44, any component can be used as long as it has a structure that opens and closes following the movement of the first moving body 9.

  In the example shown in FIGS. 5 and 6, two brush-like dustproof members in which a large number of flexible thread-like members made of resin or the like are implanted in the base as the opening / closing cover 44 are opposed to each other. Are arranged. In addition, it is good also as the cylindrical opening / closing cover 44 by mutually connecting the base | substrate side of two dustproof members with a cover or a wall surface.

  Then, a connecting rod 32 for connecting the slide part 30 of the first moving body 9 and the female screw 31 can be passed between two brush-like dustproof members constituting the open / close cover 44. In other words, two brush-like dustproof members constituting the opening / closing cover 44 can be installed above and below the connecting rod 32.

  According to the blast processing apparatus 1B in the third embodiment, the same effect as that of the blast processing apparatus 1A in the second embodiment can be obtained. In addition, the structure of the dustproof means for the ball screw 34 can be simplified.

(Fourth embodiment)
FIG. 7 is a top view showing a configuration of a first moving body and a portion associated with the first moving body in a blast processing apparatus according to a fourth embodiment of the present invention. FIG. 8 is a cross-sectional view at position DD showing the structure of the first moving body 9 and the dustproof partition shown in FIG.

  7 is different from the blast treatment apparatus 1A shown in FIG. 3 in the structure of the first moving body 9 and the structure of dust-proof means for preventing the blast material M from entering the ball screw 34. The blast treatment apparatus 1C shown in FIG. To do. Since other configurations and operations are not substantially different from the blast processing apparatus 1A shown in FIG. 3, only the first moving body 9 and a portion associated with the first moving body 9 are shown, and the same reference numerals are used for the same configurations. The description is omitted.

  In the blast treatment apparatus 1 </ b> C, two magnets 50 and 51 having different polarities are provided in a non-contact manner between the slide portion 30 and the female screw 31 constituting the first moving body 9 instead of the connecting rod 32. For this reason, the relative positional relationship between the slide portion 30 and the female screw 31 is suppressed by the magnetic force attracted to each other by the two magnets 50 and 51. Therefore, power generated by the rotation of the ball screw 34 can be transmitted to the injection unit 2 using the magnets 50 and 51 that are not in contact with each other.

  On the other hand, a space is formed between the ejection unit 2 and the guide 33 and the ball screw 34 by the magnets 50 and 51 that are not in contact with each other. Therefore, a dustproof partition 52 can be provided as a dustproof means between the magnets 50 and 51 that are not in contact with each other.

  As shown in FIGS. 7 and 8, the partition 52 can be connected so as to surround the ball screw 34. That is, the ball screw 34 can be accommodated inside the partition 52 by making the partition 52 a closed curved surface. This makes it possible to reliably prevent the blast material M from entering the ball screw 34 and the female screw 31.

  As a material for the partition 52, it is desirable to use a non-magnetic material that has a small influence on the magnetic force of the magnets 50 and 51. Therefore, a non-metallic sill such as a curtain can be used as the dust-proof partition 52.

  According to such a blast processing apparatus 1C in the fourth embodiment, it is possible to obtain the same effect as the blast processing apparatus 1A in the second embodiment. In addition, the dustproof effect can be further improved while simplifying the structure of the dustproof means for the ball screw 34.

(Other embodiments)
Although specific embodiments have been described above, the described embodiments are merely examples, and do not limit the scope of the invention. The novel methods and apparatus described herein can be implemented in a variety of other ways. Various omissions, substitutions, and changes can be made in the method and apparatus described herein without departing from the spirit of the invention. The appended claims and their equivalents include such various forms and modifications as are encompassed by the scope and spirit of the invention.

  For example, in each of the above-described embodiments, the example in which the workpiece W is fixed and the injection unit 2 including the nozzle 7 is moved by the moving mechanism 3 has been described. However, the workpiece W may be moved by the moving mechanism. That is, the moving mechanism can be configured to reciprocate at least one of the injection unit 2 and the workpiece W to be blasted along the track. Therefore, when the moving mechanism is configured using the first moving body and the second moving body, the first moving body is moved along the first trajectory together with at least one of the ejection unit 2 and the blasting target. It can be configured to reciprocate.

  And as illustrated in each of the above-described embodiments, dust proofing means for preventing the blast material M from entering at least a part of the moving mechanism can be provided in the blast treatment apparatus.

  DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C ... Blast processing device, 2 ... Injection part, 3 ... Movement mechanism, 3A ... Control system, 4 ... Media supply tank, 4A ... Filter, 5 ... Table, 6 ... Circulation system, 7 ... Nozzle, 8 ... Head, 9 ... First moving body, 10 ... Second moving body, 11 ... Chain, 12 ... 3-axis drive mechanism, 13 ... lift mechanism, 13A ... structural support, 13B ... stage, 14 ... horizontal transfer mechanism, 14A ... transfer body, 15 ... tilting mechanism 15A ... Cylinder mechanism, 15B ... Gondola, 16 ... Dust cover, 17 ... Media supply hose, 18 ... Air tank, 19 ... Air compressor, 20 ... Compressed air supply pipe , 21 ... Media recovery duct, 22 ... Media recovery hose, 23 ... Blower, 24 ... Vibration device, 30 ... Slide part, 31 ... Female thread, 32 ... Connecting rod 33 ... Guide, 34 ... Ball screw, 3 ... Support plate, 36 ... Motor, 37 ... Air hole, 38 ... Air passage groove, 39 ... Air supply port, 40 ... Air tank for dust prevention, 41 ... Air for dust prevention Compressor, 42 ... Dust-proof air supply hose, 43 ... Cover, 44 ... Open / close cover, 50 ... Magnet, 51 ... Magnet, 52 ... Partition, W ... Workpiece, M ... Blast material, O1 ... First orbit, O2 ... Second orbit

Claims (15)

An injection unit for injecting a blast material onto a blasting target;
A non-armed moving mechanism for reciprocating the jet section along a track;
And a dust-proof means for preventing entry of the blast material to at least a portion of the moving mechanism,
The moving mechanism is
A first moving body that reciprocates along the first trajectory together with the injection unit;
A second moving body that reciprocates the first track along a single or a plurality of second tracks, wherein the first track is reciprocated in the same direction as the first track. The second moving body configured to be capable of :
A blasting apparatus comprising: An injection unit for injecting a blast material onto a blasting target;
A non-armed moving mechanism for reciprocating the jet section along a track;
Dust prevention means for preventing the blast material from entering at least a part of the moving mechanism,
The moving mechanism is
A first moving body that reciprocates along the first trajectory together with the injection unit;
A second moving body that reciprocates the first trajectory along a single or plural second trajectories;
Have
A blasting apparatus , further comprising a supply tank that moves together with the first moving body or the second moving body and supplies the blast material to the injection unit . An injection unit for injecting a blast material onto a blasting target;
A moving mechanism that is not an arm type and reciprocates along the trajectory, the moving mechanism having a moving body that moves together with the ejecting unit;
Dust-proof means for preventing the blast material from entering at least a part of the moving mechanism;
A supply tank that moves with the moving body and supplies the blasting material to the injection unit;
A blasting apparatus comprising: The moving mechanism is
A first moving body that reciprocates along the first trajectory together with the injection unit;
A second moving body that reciprocates the first track along a single or a plurality of second tracks,
The blast processing apparatus according to claim 3, wherein the second moving body is configured to reciprocate the first track in the same direction as the first track. The blast according to any one of claims 1 to 4 , wherein the dust prevention means is configured to prevent the blast material from entering the gap by blowing gas into the gap formed in the moving mechanism. Processing equipment. The moving mechanism forms the track by connecting a ball screw and a guide parallel to the ball screw, and fixes the injection unit to a moving body that moves along the guide by rotation of the ball screw. Is configured to move
The blast processing apparatus according to claim 3 , wherein the dustproof means is configured to prevent the blast material from entering a tightening portion of the ball screw. The blast processing apparatus according to claim 6 , wherein a dust-proof cover that covers at least the injection unit side of the ball screw and expands and contracts in the length direction of the ball screw following the movement of the moving body is provided as the dust-proof means. The blast processing apparatus according to claim 6 , wherein a cover that opens and closes following the movement of the moving body is provided as the dust-proof means on at least the injection unit side of the ball screw. The moving mechanism is configured to transmit power generated by rotation of the ball screw to the injection unit using magnets that are not in contact with each other.
The blasting apparatus according to claim 6 , wherein a dustproof partition is provided as the dustproof means between the non-contact magnets. The injection unit has an even number of a plurality of nozzles for injecting the blast process target,
The moving mechanism is blasting device according to any one of the plurality of claim configured to move the nozzle symmetrically 1-9 so that the vibration caused by the movement of the plurality of nozzles is canceled.   The blast processing apparatus according to claim 3, further comprising a circulation system that collects the blast material injected from the injection unit and supplies the blast material to the supply tank. The blast processing apparatus according to any one of claims 1 to 11 , wherein the moving mechanism is configured to be able to adjust an angle of a nozzle provided in the injection unit to inject the blast process target. Injecting a blast material from an injection unit onto a target for blasting;
Reciprocating the injection unit along a track by a non-armed moving mechanism;
And a step of preventing the entry of the blast material to at least a portion of said moving mechanism by dustproof means,
The moving mechanism is
A first moving body that reciprocates along the first trajectory together with the injection unit;
A second moving body that reciprocates the first track along a single or a plurality of second tracks, wherein the first track is reciprocated in the same direction as the first track. The second moving body configured to be capable of:
A blasting method comprising: Injecting a blast material from an injection unit onto a target for blasting;
A first moving body that reciprocates along the first track along with the ejection unit; and a second moving body that reciprocates along the first or plurality of second tracks. A step of reciprocating the ejection unit along the first and second trajectories by the movement mechanism, which is a movement mechanism and is not an arm type;
Preventing the blast material from entering at least a portion of the moving mechanism by dustproof means;
Supplying the blast material to the injection unit in a supply tank that moves together with the first moving body or the second moving body;
Blasting how to have a. Injecting a blast material from an injection unit onto a target for blasting;
A moving mechanism having a moving body that moves together with the ejecting unit, wherein the ejecting unit is reciprocated along a track by the non-armed moving mechanism;
Preventing the blast material from entering at least a portion of the moving mechanism by dustproof means;
Supplying the blast material to the injection unit in a supply tank that moves with the moving body;
A blasting method comprising:

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