JP6712417B2 - Plate processing equipment - Google Patents

Description

The present invention relates to a printing plate processing apparatus that processes a printing plate.

Conventionally, when a printing plate is mounted on the plate cylinder of a printing machine, the holding side bending part that is bent on the ground side edge of the printing plate is mounted in the mounting groove of the plate cylinder. Rotate the plate cylinder once while applying tension to the plate so that it will not be displaced from the mounting groove of the plate cylinder, and bend the tail edge side bent part that is bent at the top edge of the plate It is installed in the installation groove.

Further, there is a printing plate in which a plurality of protrusions are provided along the holding side bent portion. In this printing plate, by mounting the support side bent portion having a plurality of protrusions in the mounting groove of the plate cylinder, it is possible to suppress the position of the support side bent portion mounted in the mounting groove of the plate cylinder, Improves the mountability of the printing plate on the plate cylinder.

However, the width of the holding side bending part in the direction along the edge on the ground side of the plate is wide, and there is an optimum amount of protrusion of the protrusion depending on the position in the width direction. Since there is an optimum amount of protrusion of the protrusion depending on the type, it is preferable that the amount of protrusion of the protrusion can be easily adjusted.

JP 2004-90378 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a printing plate processing apparatus capable of forming a plurality of projections on an edge of a printing plate that is bent and easily adjusting the amount of projection of these projections.

The plate processing apparatus according to claim 1, wherein an arrangement portion on which the printing plate is arranged, an edge portion provided along a side edge of the arrangement portion, and an angle between the arrangement portion and the arrangement portion via the edge portion are different. A bend receiving portion provided at a predetermined bending angle, and a first screw hole and a second screw hole provided adjacent to a plurality of locations in a direction along a side edge of the arrangement portion, respectively. The screw hole and the second screw hole penetrate through the disposing portion and the bending receiving portion, and the anvil is provided such that central axes thereof are parallel to each other and a part of peripheral portions thereof overlap each other, and the anvil. A projection forming part that is screwed into the first screw hole and projects from the bending receiving portion, a fixing part that is screwed into the second screw hole of the anvil and is in contact with the projection forming part, and the printing plate. Is provided along the edge portion of the anvil and is provided on the pressing portion so as to face the pressing portion that presses toward the bending receiving portion and the projection forming component that projects from the bending receiving portion. And a turn bar having a recessed portion formed therein.

The plate processing apparatus according to claim 2 is the plate processing apparatus according to claim 1, wherein a pitch between the first screw hole and the second screw hole is a radius of the first screw hole and the second screw hole. It is smaller than the sum of the radius of the holes.

The plate processing apparatus according to claim 3 is the plate processing apparatus according to claim 1 or 2, wherein the first screw hole is provided at a position closer to the edge portion than the second screw hole, The two screw holes are provided at positions farther from the edge portion than the first screw holes.

According to the plate processing apparatus of the first aspect, it is possible to form a plurality of protrusions on the edge of the plate to be bent, and it is possible to easily adjust the amount of protrusion of these protrusions.

According to the plate processing apparatus of claim 2, in addition to the effect of the plate processing apparatus of claim 1, a projection forming component screwed into the first screw hole and a fixed component screwed into the second screw hole. The contact part and the fixed part can fix the protrusion forming part.

According to the plate processing apparatus of claim 3, in addition to the effect of the plate processing apparatus of claim 1 or 2, the closer the anvil is to the edge portion, the thinner the arrangement portion and the bending receiving portion become. By providing the second screw hole at a position farther from the edge portion than the first screw hole, the fixed component can be arranged in the anvil without protruding from the arrangement portion.

FIG. 3 is an enlarged cross-sectional view of a plate bending unit of the printing plate processing apparatus showing the embodiment of the present invention. It is the top view which looked at the anvil of the same plate bending unit from the direction of an axis of the 1st and 2nd screw hole. It is a top view which looked at the anvil of the same plate bending unit from the axial direction of the 1st and 2nd screw hole, and screwed the projection formation component and the fixed component to the 1st and 2nd screw hole. It is a sectional view of a plate bending unit same as the above. It is a front view of a part of the same plate processing apparatus. It is a perspective view of the same printing plate. It is a side view of a part of the same printing plate.

An embodiment of the present invention will be described below with reference to the drawings.

The printing plate 10 is shown in FIGS. 6 and 7. The printing plate 10 is formed of a thin metal plate in a rectangular shape, and a stamp surface 11 is drawn on one surface. The plate 10 has one end side on the top side, the other end side on the ground side, and a direction intersecting these top and bottom sides is a width direction (left-right direction).

The top and bottom edges of the printing plate 10 have a predetermined bending angle toward the back side of the printing plate 10 for mounting the printing plate 10 in the mounting groove provided in the plate cylinder of the rotary press. Is bent so that That is, the tail side bending portion 12 is bent at an acute angle on the ground side of the printing plate 10, and the tail end side bending portion is formed on the top side of the printing plate 10 so as to be substantially parallel to the tail side bending portion 12. 13 is bent at an obtuse angle. A plurality of reference notches 14 for positioning and mounting on the plate cylinder are formed on these bent portions 12, 13.

The gripping side bending portion 12 is provided with projections 15 at a plurality of positions in the width direction (horizontal direction). These protrusions 15 are projected on the front surface side of the support side bending portion 12, and have a convex curved surface shape, for example, a spherical shape or an elliptical shape that is long corresponding to the bending direction of the support side bending portion 12. It is formed in a shape.

Next, FIG. 5 shows a front view of a part of the plate processing apparatus 20. The plate processing apparatus 20 is configured to transfer the plate-shaped plate 10 before bending to a predetermined processing position 21 or to transfer the plate 10 that has been subjected to bending processing, and a printing mechanism located at the processing position 21. A punch unit (23) for forming a reference notch (14) on the edge of the plate (10) and a plate bending unit (24) for bending the edge of the printing plate (10) located at the processing position (21) are provided. 5 shows the punch unit 23 and the plate bending unit 24 for processing the edge of the printing plate 10 on the ground side. On the right side of FIG. 5, the edge of the printing plate 10 on the top side is processed. A punch unit and a plate bending unit, which are not shown, are installed.

The plate bending unit 24 includes an anvil 27, a plate retainer 28 that presses the plate 10 against the anvil 27, a turn bar 29 that bends the edge of the plate 10 along the anvil 27, a plate retainer 28, and a turn bar 29 in the vertical direction. An elevating mechanism 30 for moving and a rotating mechanism 31 for rotating the turn bar 29 are provided.

Next, FIG. 4 shows a sectional view of the plate bending unit 24. An arrangement portion (upper surface portion) 34 for arranging the printing plate 10 is formed on the upper surface of the anvil 27, and an acute edge portion 35 is formed along a side edge of the arrangement portion 34, and the edge portion 35 is interposed therebetween. A bend receiving portion (inclined surface portion) 36 is formed whose angle with the arrangement portion 34 is a predetermined bending angle. The edge portion 35 is formed in a curved surface centered on the center point O.

The plate retainer 28 presses and holds the edge portion of the printing plate 10 against the arrangement portion 34 of the anvil 27 when it is lowered by the elevating mechanism 30, and separates from the printing plate 10 when it is raised.

The turn bar 29 is rotated by the rotating mechanism 31 so as to rotate around the center point O of the edge portion 35 of the anvil 27, and the edge portion of the printing plate 10 is bent along the edge portion 35 and bent. It is pressed toward the portion 36.

Next, as shown in FIGS. 1 to 3, on the anvil 27, a first screw hole 41 and a second screw hole 42 are adjacent to each other at a plurality of positions along the width direction (left-right direction) of the anvil 27, respectively. It is provided. That is, a plurality of sets are provided along the width direction (left-right direction) of the anvil 27, with the first screw hole 41 and the second screw hole 42 as one set. The first screw hole 41 and the second screw hole 42 penetrate through the arrangement portion 34 of the anvil 27 and the bending receiving portion 36.

The first screw hole 41 is provided at a position closer to the edge portion 35 than the second screw hole 42, and the second screw hole 42 is provided at a position where the edge portion 35 is separated from the first screw hole 41. ing. In the present embodiment, the first screw hole 41 and the second screw hole 42 are arranged in parallel in this order from the edge portion 35 side in the direction orthogonal to the width direction of the edge portion 35.

The central axis s1 of the first screw hole 41 and the central axis s2 of the second screw hole 42 are parallel to each other, and the first screw hole 41 and the second screw hole 41 and the second screw hole 42 are parallel to the direction perpendicular to the surface of the bending receiving portion 36. The upper end side (arrangement portion 34 side) of the hole 42 is inclined so as to be farther from the edge portion 35 than the lower end side (bend receiving portion 36 side).

Inside the first screw hole 41, a female screw 43 is formed on the lower end side in the axial direction (bend receiving portion 36 side), and the root diameter of the female screw 43 is formed on the upper end side in the axial direction (arrangement portion 34 side). Also, a hole portion 44 having a large hole diameter is formed. A female screw 45 is formed inside the second screw hole 42 in the entire axial direction.

The spiral direction of the female screw 43 of the first screw hole 41 and the female screw 45 of the second screw hole 42 is the same direction. The pitch of the female screw 43 of the first screw hole 41 and the pitch of the female screw 45 of the second screw hole 42 may be the same or different. Although the first screw hole 41 and the second screw hole 42 are formed to have the same diameter, they may be different.

The pitch P between the central axis s1 of the first screw hole 41 and the central axis s2 of the second screw hole 42 is smaller than the sum of the radius r1 of the first screw hole 41 and the radius r2 of the second screw hole 42. Therefore, a part of the peripheral surfaces of the first screw hole 41 and the second screw hole 42 facing each other are open and communicate with each other. The radius r1 of the first screw hole 41 and the radius r2 of the second screw hole 42 are radii at the trough positions of the female screws 43 and 45.

Note that FIG. 1 schematically shows the trough positions of the female screws 43, 45 of the first screw hole 41 and the second screw hole 42, and FIG. 2 shows the crests 43a, 45a and troughs 43b of the female screws 43, 45. 45b is also shown.

Further, a projection forming component 48 is screwed into the first screw hole 41 of the anvil 27. The protrusion forming component 48 has a cylindrical shape, and a male screw 49 screwed into the female screw 43 of the first screw hole 41 is formed on the peripheral surface over the entire axial direction. A projection-forming portion 50 having a convex curved surface is provided on one end face in the axial direction of the projection-forming component 48, and an operating portion 51 for rotating by a tool is formed on the other end face in the axial direction. A tapered contact portion 52 is formed in the peripheral portion of the other end. The operation portion 51 is provided with, for example, a hexagonal hole into which a hexagonal wrench as a tool is inserted and which is used for turning operation.

The axial dimension of the protrusion forming component 48 (male screw 49) is set longer than the axial dimension of the female screw 43 of the first screw hole 41. The protrusion forming part 48 is arranged in a state where the protrusion forming part 50 protrudes from the bending receiving part 36 of the anvil 27, and in this state, the other end side of the protrusion forming part 48 including the contact part 52 is inside the hole part 44. It is located and does not protrude from the arrangement portion 34.

A fixed component 55 is screwed into the second screw hole 42 of the anvil 27. The fixed component 55 has a cylindrical shape, and a male screw 56 screwed into the female screw 45 of the second screw hole 42 is formed on the circumferential surface over the entire axial direction. A contact portion 57 formed in a tapered shape is formed in the peripheral portion of one end of the fixed component 55 in the axial direction, and an operation portion 58 for rotating by a tool is formed in the other end surface of the fixed component 55. .. The operation unit 58 is provided with, for example, a hexagonal hole for inserting and rotating a hexagonal wrench as a tool.

The male screw 49 of the protrusion forming component 48 and the male screw 56 of the fixing component 55 have the same spiral direction. The diameters of the protrusion forming component 48 and the fixing component 55, the pitch of the male screw 49 of the protrusion forming component 48 and the pitch of the male screw 56 of the fixing component 55, etc. are formed corresponding to the first screw hole 41 and the second screw hole 42. It is preferable in terms of operability that the operating portion 51 of the protrusion forming component 48 and the operating portion 58 of the fixed component 55 have the same configuration and can be operated by the same tool.

Further, the turn bar 29 has a pressing portion 61 that comes into contact with the edge portion of the printing plate 10, bends the edge portion of the printing plate 10 along the edge portion 35, and presses toward the bending receiving portion 36. There is. Recesses 62 are provided at a plurality of positions in the width direction (left-right direction) of the pressing portion 61 so as to face the respective projection-forming components 48 protruding from the bending receiving portion 36. The concave portion 62 has a cylindrical concave shape and allows a part of the edge of the printing plate 10 which is pressed by the pressing portion 61 against the protrusion forming component 48 to be deformed so as to enter the concave portion 62. A protrusion 15 is formed on the edge of the printing plate 10 between. The recess 62 may be a recess or a hole, as long as it can adjust the amount of protrusion of the protrusion forming component 48.

Next, the operation of the plate processing device 20 will be described.

First, when the protrusion forming component 48 and the fixing component 55 are attached to the anvil 27, the protrusion forming component 48 is inserted into the hole portion 44 of the first screw hole 41 from the arrangement portion 34 side of the anvil 27, and the male screw of the protrusion forming component 48 is inserted. 49 is screwed into the female screw 43 of the first screw hole 41, and the projection forming portion 50 on the tip side of the projection forming component 48 is projected from the bending receiving portion 36 of the anvil 27. The protrusion amount of the protrusion forming portion 50 from the bending receiving portion 36 is arbitrarily adjusted according to the protrusion amount of the protrusion portion 15 formed on the holding side bending portion 12 of the printing plate 10.

After the adjustment of the protrusion forming part 48 is completed, the fixing part 55 is aligned with the second screw hole 42 from the arrangement part 34 side of the anvil 27, and the male screw 56 of the fixing part 55 is screwed into the female screw 45 of the second screw hole 42. By screwing the fixing component 55, a part of the peripheral portion of the fixing component 55 comes into contact with a part of the peripheral portion of the protrusion forming component 48, and the protrusion forming component 48 is fixed to the anvil 27. The projection forming component 48 and the fixed component 55 are in tapered contact with each other by the tapered contact portion 52 and the tapered contact portion 57.

At a plurality of positions in the width direction of the anvil 27, the protrusion amount of each protrusion forming component 48 from the bending receiving portion 36 of the anvil 27 is arbitrarily adjusted, and after the adjustment is completed, the protrusion forming component 48 is fixed to the anvil 27 by the fixing component 55. To do.

In addition, when the protrusion amount of the protrusion forming component 48 is finely adjusted or readjusted after the protrusion forming component 48 and the fixing component 55 are screwed to the anvil 27, the fixing component 55 is set in the screw return direction (retraction direction). The protrusion-forming component 48 is unlocked by rotating the protrusion-forming component 48, and the protrusion-forming component 48 is rotated to adjust the amount of protrusion from the bending receiving portion 36. The protrusion forming component 48 may be fixed to the anvil 27 with the fixing component 55.

Further, the screwing direction (traveling direction) of the fixed component 55 toward the protrusion forming component 48 is the clockwise direction (arrow direction) in FIG. 3, and the contact portion 57 of the peripheral portion of the fixed component 55 is the peripheral portion of the protrusion forming component 48. When the contact portion 52 is contacted with, the turning force acts on the projection forming component 48 in the counterclockwise direction in FIG. The direction in which this turning force acts on the protrusion forming component 48 is the screw return direction (retracting direction) to the opposite side to the screwing direction of the protrusion forming component 48 (clockwise direction in FIG. 3), that is, on the fixed component 55 side. This is the direction toward which the protrusion forming component 48 and the fixing component 55 are pressed against each other and firmly fixed.

Next, as shown in FIG. 4, when the printing plate 10 is bent, the conveyance mechanism 22 conveys it to a processing position 21 where the ground side edge of the printing plate 10 is bent. At this time, the edge of the printing plate 10 on the ground side is made to project from the edge portion 35 of the anvil 27 by the length corresponding to the holding side bending portion 12.

The plate retainer 28 and the turn bar 29 are lowered by the elevating mechanism 30, and the plate retainer 28 presses and holds the printing plate 10 against the arrangement portion 34 of the anvil 27.

The turn bar 29 is turned by the turning mechanism 31 so as to turn about the center point O of the edge portion 35 of the anvil 27. The turn bar 29 presses the ground side edge of the printing plate 10 toward the bend receiving portion 36 of the anvil 27 while bending the edge of the plate 10 along the edge portion 35.

As a result, as shown in FIG. 1, the leading edge bending portion 12 is formed at the edge of the printing plate 10 on the ground side. Further, by pressing the edge of the plate 10 on the ground side with the turn bar 29 against the protrusion forming part 48 protruding from the bending receiving part 36 of the anvil 27, the part of the plate 10 with which the protrusion forming part 48 abuts is turned bar. It deforms so as to enter the concave portion 62 of 29, and the protrusion 15 is formed on the edge portion on the ground side of the printing plate 10, that is, on the side bending portion 12. It should be noted that FIG. 1 shows a state in which the turn bar 29 is rotated so as to slightly return to the original position after the ground side edge of the printing plate 10 is bent.

After the bending of the ground side edge of the plate 10 is completed, the turn bar 29 is rotated to return it to its original position, the plate retainer 28 and the turn bar 29 are lifted, the holding of the plate 10 is released, and the transport mechanism is moved. The plate 10 is unloaded from a processing position 21 where the plate 10 is bent by 22. When carrying the printing plate 10 out of the processing position 21 by the carrying mechanism 22, the carrying mechanism 22 moves the printing plate 10 to the top side and the ground side so that the edges of the printing plate 10 on the top side and the ground side are moved. In the process of bending in order, the edge of the printing plate 10 on the ground side, that is, the holding side bending part 12 is disengaged from the lower region of the edge part 35 of the anvil 27. 10 can be carried out from the processing position 21.

When the plate 10 thus formed is mounted on the plate cylinder of the printing machine, the bottom side bending portion 12 of the plate 10 is mounted in the mounting groove of the plate cylinder, and tension is applied to the plate 10. The plate cylinder is rotated once while adding, and the tail edge side bent portion 13 of the printing plate 10 is mounted in the mounting groove of the plate cylinder.

At this time, since a plurality of protrusions 15 are provided along the width direction of the support side bending portion 12, by mounting the support side bending portion 12 in the mounting groove of the plate cylinder, the mounting groove of the plate cylinder is attached. It is possible to suppress positional deviation of the leading edge side bent portion 12 mounted on the plate, and improve the mountability of the printing plate 10 on the plate cylinder.

Then, according to the plate processing apparatus 20 of the present embodiment, when the edge portion of the plate 10 is bent by the turn bar 29 by the plurality of protrusion forming components 48 screwed to the anvil 27, the plate 10 A plurality of protrusions 15 can be formed at one time on the edge portion, and the protrusion amount of each protrusion forming component 48 from the anvil 27 can be adjusted to easily adjust the protrusion amount of each protrusion portion 15 on the edge of the plate 10. can do.

Moreover, the anvil 27 is provided with a first screw hole 41 and a second screw hole 42 which penetrate through the arrangement portion 34 and the bending receiving portion 36 and are adjacent to each other, and the projection forming component 48 is screwed into the first screw hole 41. The protrusion forming component 48 can be fixed to the anvil 27 by attaching the fixing component 55 to the second screw hole 42 and screwing the fixing component 55 into contact with the protrusion forming component 48. Therefore, the protrusion amount of the protrusion 15 can be easily adjusted. With it can be kept constant.

Further, the anvil 27 has a wide dimension in the width direction, the protrusion forming parts 48 are arranged at a plurality of positions in the width direction of the anvil 27, and the protrusions 15 are provided at a plurality of positions in the width direction of the holding edge bending part 12 of the printing plate 10. However, at each position in the width direction of the anvil 27, it is possible to easily adjust the amount of protrusion of each projection forming component 48 from the bending receiving portion 36 of the anvil 27, so that the holding side bending of the printing plate 10 is performed. Optimal protrusions 15 can be formed in the entire width direction of the portion 12.

Further, the pitch P between the first screw hole 41 and the second screw hole 42 of the anvil 27 is smaller than the sum of the radius r1 of the first screw hole 41 and the radius r2 of the second screw hole 42. The fixing component 55 screwed into the second screw hole 42 can be brought into contact with the protrusion forming component 48 screwing into the first screw hole 41, and the protrusion forming component 48 can be reliably fixed to the anvil 27 by the fixing component 55.

By providing the second screw hole 42 of the anvil 27 at a position farther from the edge portion 35 than the first screw hole 41, the thickness of the arrangement portion 34 and the bending receiving portion 36 becomes closer to the edge portion 35 of the anvil 27. However, the fixed component 55 can be arranged in the anvil 27 without protruding from the arrangement portion 34, and the arrangement of the printing plate 10 on the arrangement portion 34 can be prevented from being hindered.

Further, the central axis s1 of the first screw hole 41 and the central axis s2 of the second screw hole 42 are parallel to each other, and the first screw hole 41 and the first screw hole 41 Since the upper end side (the arrangement portion 34 side) of the 2 screw hole 42 is inclined so as to be separated from the edge portion 35 more than the lower end side (the bend receiving portion 36 side), the fixing component 55 can be more reliably arranged. It can be arranged in the anvil 27 without protruding from 34, and it is possible to prevent the arrangement of the printing plate 10 in the arrangement portion 34 from being disturbed.

Further, in a state where the contact portion 52 in the peripheral portion of the protrusion forming component 48 and the contact portion 57 in the peripheral portion of the fixed component 55 are in contact with each other, the rotation direction of the protrusion forming component 48 in the screwing direction and the screwing of the fixing component 55 in the rotating direction. Since the moving direction is opposite, it is possible to obtain the effect of preventing the protrusion forming component 48 and the fixing component 55 from loosening. That is, the screwing direction (traveling direction) in which the fixed component 55 is directed to the protrusion forming component 48 is the clockwise direction (arrow direction) in FIG. 3, and the contact portion 57 of the peripheral portion of the fixed component 55 is the peripheral portion of the protrusion forming component 48. When the contact portion 52 is contacted with, the turning force acts on the projection forming component 48 in the counterclockwise direction in FIG. The counterclockwise direction in FIG. 3 in which this turning force acts on the protrusion forming component 48 is the screw return direction (reverse direction) that is opposite to the screwing direction of the protrusion forming component 48 (the traveling direction and the clockwise direction in FIG. 3). Direction), that is, the direction toward the fixed component 55 side, and the protrusion forming component 48 and the fixed component 55 are pressed against each other and firmly fixed.

Furthermore, during bending, the protrusion forming component 48 receives a pressing force from the turn bar 29 via the printing plate 10, so that the protrusion forming component 48 rotates in the counterclockwise direction in FIG. 3, which is the screw return direction (retraction direction). When power is applied, the turning force in the clockwise direction in FIG. 3 acts on the fixed component 55 that is in contact with the protrusion forming component 48. The clockwise direction in FIG. 3 in which this turning force acts on the fixed component 55 is the screwing direction (advancing/retracting direction), that is, the direction toward the protrusion forming component 48, and the protrusion forming component 48 and the fixing component 55 are crimped to each other. As a result, a strong fixed state is maintained, and the protrusion forming part 48 and the fixing part 55 do not loosen.

10 printing plates
20 Plate processing equipment
27 Anvil
29 Turn bar
34 Layout
35 Edge
36 Bend receiving part
41 1st screw hole
42 Second screw hole
48 Projection forming parts
55 Fixed parts
61 Pressing part
62 recess
s1, s2 center axis

Claims (3)

An arrangement portion on which the printing plate is arranged, an edge portion provided along a side edge of the arrangement portion, and a bend receiving portion provided with a predetermined bending angle between the arrangement portion and the arrangement portion via the edge portion. , And a first screw hole and a second screw hole provided adjacent to each other at a plurality of positions in the direction along the side edge of the arrangement portion, and the first screw hole and the second screw hole are provided in the arrangement. And an anvil that is provided so as to penetrate through the bend receiving portion and the center axes thereof are parallel to each other and a part of peripheral portions thereof are overlapped with each other.
A projection-forming component that is screwed into the first screw hole of the anvil and projects from the bending receiving portion;
A fixed part that is screwed into the second screw hole of the anvil and is in contact with the protrusion forming part;
The pressing portion that bends the edge portion of the printing plate along the edge portion of the anvil and presses the bending receiving portion toward the bending receiving portion, and the pressing portion that faces the projection forming component protruding from the bending receiving portion. And a turn bar having a recess formed in the plate. The printing plate processing according to claim 1, wherein a pitch between the first screw hole and the second screw hole is smaller than a sum of a radius of the first screw hole and a radius of the second screw hole. apparatus. The first screw hole is provided at a position closer to the edge portion than the second screw hole,
The printing plate processing apparatus according to claim 1 or 2, wherein the second screw hole is provided at a position farther from the edge portion than the first screw hole.

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