JP2010052790A - Roll protective board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll protective board having an excellent self-standing stability when used, and stacked to a lowered stacking height when unused. <P>SOLUTION: A pair of triangular prism-like corner struts 12 and 12 protrude from a pair of corners of four corners of the roll protective board 10, and the roll protective board 10 is assisted to stand for itself by the corner struts 12 and 12. A pair of corner-cut parts 13 and 13 are formed by cutting and removing triangular portions each having the same cross section of the corner strut 12 from two remaining corners of the roll protective board 10. When the corner struts 12 and 12 are oriented upward and a plurality of the roll protective boards 10 are stacked on each other with being alternately turned by 180 degrees when unused , the corner struts 12 and 12 of the lower roll protective board 10 are accommodated in side portions of the corner cut parts 13 and 13 of the upper roll protective board 10. The stacking height is lowered thereby as compared with the conventional boards. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a roll protection board that covers both end faces of a roll in which a core member extends in the horizontal direction and can hold the outer peripheral surface of the roll in a state of floating from a floor surface.

Conventionally, this type of roll protection panel has a rectangular plate shape as a whole, and includes a core material support portion that can support the end of the core material of the roll. Moreover, the corner support | pillar protrudes from the corner | angular part of the four corners in the mating surface with a roll among roll protection boards. And in use, a pair of roll protection panels are addressed to both end faces of the roll while standing from the floor surface, and the outer peripheral surface of the roll is kept floating from the floor surface. At this time, the self-supporting of the roll protection panel is assisted by the pair of corner columns. Also, when not in use, the roll protection panels are stacked in a laid state. At this time, the tips of the four corner struts of each roll protection board are abutted against the upper or lower roll protection board, and the upper and lower roll protection boards are maintained in a parallel state (see, for example, Patent Document 1). ).
Japanese Patent Laying-Open No. 2005-22660 (FIGS. 8 and 9)

  However, in the above-described conventional roll protector, when stacked, a useless space surrounded by corner posts is formed between the upper and lower roll protectors, and the stack height is increased. Moreover, when it uses by the usage method which drops a roll from upper direction between a pair of self-supporting roll protection panels, an upper corner support | pillar becomes obstructive. On the other hand, if the upper pair of corner posts is simply removed and the pair of corner posts is provided only on the lower side, the roll protection panels cannot be stacked when not in use. Further, if all the corner columns are eliminated, the stability of the roll protection panel during use is deteriorated, and it is difficult to mount the roll support panel on the roll.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a roll protection panel that has excellent self-standing stability during use and can suppress the stacking height when not in use.

  In order to achieve the above object, the roll protection panel according to the invention of claim 1 has a rectangular plate shape capable of covering the end face of the roll and a groove capable of supporting the end of the core of the roll. Roll protector equipped with a core-like or hole-like core material support, which is placed upright at the time of use and placed at both ends of the roll to hold the roll in a floated state, while lying down when not in use In the roll protection panel stacked in a posture, a roll is provided with a pair of corner posts that protrude from both corners of the four corners of the roll protection plate that are positioned in a standing posture to assist the roll protection panel independence, A pair of corner cuts are formed by cutting the remaining corners of the protective panel to the same or wider than the cross-sectional shape of the corner column, and when not in use, the corner column is directed upward and a plurality of roll protection panels When alternately turning 180 degrees and stacking, the corner struts in the lower roll protector are housed in the sides of the corner cut part in the upper roll protector, and the upper and lower roll protectors are placed on the outer edges of the four sides. Is characterized in that it can be arranged at the regular stacking positions that coincide with each other.

  According to a second aspect of the present invention, in the roll protection panel according to the first aspect, the locking protrusion is formed at a position near the outer edge of the main plane from which the corner column protrudes. It is characterized in that a locking recess that can be engaged with the locking projection is formed on the back surface of the plane, and that the upper and lower roll protection panels can be held at the regular stacking position by the engagement of the locking projection and the locking recess. Have

  According to a third aspect of the present invention, in the roll protection board according to the second aspect, the core material support portion has a groove shape and supports the core material at the bottom thereof, and the locking projections in the roll protection board in a standing posture. It is disposed at a lower position than the core material support part, and has an inclined surface gradually separated from the main plane as it moves away from the core material support part, and a locking surface that rises at a right angle from the main plane and intersects the inclined surface. It is characterized by

  According to a fourth aspect of the present invention, in the roll protection panel according to any one of the first to third aspects, the pair of corner columns is higher than another roll protection panel stacked on the roll protection panel having the corner columns. The tip of the corner column in the two lower roll protection panels engages the opposite surface of the roll protection panel to the opposite side of the pair of corner protection columns to prevent the roll protection plates from slipping. It is characterized in that a supporting column receiving recess is provided.

  According to a fifth aspect of the present invention, in the roll protection panel according to any one of the first to fourth aspects, the corner column has a triangular prism structure, while the corner cut portion has the same triangular portion as the cross section of the corner column. It is characterized in that a chamfered structure cut out from the corners of the corners is formed, and the upper and lower roll protection panels can be guided to the normal stacking position by the slope of the triangular pillar structure of the corner column and the chamfered slope of the corner cut part.

[Invention of Claim 1]
In the roll protection panel according to the first aspect, the self-supporting of the roll protection panel in use can be stabilized by the pair of corner posts protruding from the pair of corners among the corners of the four corners. Moreover, since the corner portion of the roll protection panel is cut out in the same or wider range as the cross-sectional shape of the corner column, a pair of corner cut portions are formed. When used in a usage method for lowering the roll, the corner post does not get in the way as in the prior art. When the corner support is turned upward and the plurality of roll protection panels are alternately rotated 180 degrees and stacked when not in use, the corner support in the lower roll protection panel is replaced with the corner cut portion in the upper roll protection panel. Housed in the side, the upper and lower roll protection panels can be arranged at the regular stacking position. Thereby, the stacking height of the roll protection board at the time of non-use can be suppressed compared with the past.

[Invention of claim 2]
In the roll protection panel of claim 2, when stacked, the locking protrusion and the locking recess engage each other between the upper and lower roll protection panels, and the upper and lower roll protection panels are locked at the regular stacking position. The stacking state is stable.

[Invention of claim 3]
In the roll protection panel according to claim 3, when the upper roll protection panel is moved horizontally by being brought into sliding contact with the lower roll protection panel, the inclined surface of the locking projection of the lower roll protection panel is stacked. When the upper roll protection board rides on and passes through the inclined surface, the locking projection of the lower roll protection board engages with the locking recess of the upper roll protection board. This facilitates the stacking operation of the roll protection board. And since the latching protrusion is arrange | positioned in the lower position rather than the core material support part in the roll protection panel of a standing posture, it is the usage method which drops a roll from upper direction between a pair of roll protection panels of a standing posture. When used, the locking projection does not interfere with the roll.

[Invention of claim 4]
In the roll protector according to claim 4, when stacked, the tip engaging portion and the column receiving recess are engaged with each other between a pair of every other pair of roll protectors, and the stacked state is stabilized. .

[Invention of claim 5]
According to the roll protection panel of claim 5, the corner column has a triangular prism structure, while the corner cut portion has a chamfered structure in which the same triangular portion as the cross section of the corner column is cut from the corner of the roll protection panel. Therefore, when stacking another roll protector horizontally on the roll protector, the upper and lower roll protectors are brought into sliding contact with the slope of the triangular pillar structure of the corner column and the chamfered slope of the corner cut part. It can be guided to the normal stacking position. This facilitates the stacking operation of the roll protection board.

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 90 denotes a roll which is formed by winding a sheet (for example, a resin film, paper or the like) around a cylindrical core member 91 extending in the horizontal direction. Further, both end portions of the core material 91 protrude from both end surfaces 90 </ b> A of the roll 90. In order to protect this roll 90, the roll protection board 10 of this embodiment is used.

  The roll protection board 10 is an injection-molded product made of synthetic resin, and has a rectangular plate shape as a whole. A U-shaped groove 11 (“core” of the present invention) extends between the center of the square and one side edge. Corresponding to a “material support”. In use, as shown in FIG. 1, a pair of roll protection panels 10 are arranged to face each other while standing from the floor surface 95 of the luggage storage area, and as shown in FIG. It is supported at the bottom of the U-shaped groove 11, and the roll 90 is held in a state of being floated from the floor surface 95. Further, when not in use, the roll protection board 10 is stacked with its orientation changed alternately by 180 degrees in a state where it is laid down parallel to the floor surface 95 as shown in FIG.

  Specifically, as shown in FIG. 1, the roll protection panel 10 includes a grid-shaped rib 17 integrally formed on the back surface of the main flat plate 20, and a side wall 10 </ b> C protruding from the outer edge portion of the main flat plate 20 to the back surface side. The entire lattice rib 17 is surrounded by the inner wall of the U-shaped groove 11. In addition, the surface on the opposite side to the grid-shaped rib 17 among the main flat plates 20 is the main plane 10A according to the present invention.

  As shown in FIG. 1, the bottom of the U-shaped groove 11 is located at the center of the overall shape of the roll protection board 10, and the opening of the U-shaped groove 11 is the upper edge of the standing roll protection board 10. Located in the department. The inner wall of the U-shaped groove 11 includes a semicircular semicircular arc wall 11C disposed at the bottom, and a pair of flat plate walls 11B and 11B extending substantially vertically upward in FIG. 1 from both ends of the semicircular arc wall 11C. The flat plate walls 11B and 11B are composed of a pair of tapered walls 11A and 11A extending from the upper ends of the flat walls 11B and 11B so as to be separated from each other toward the outer side. The center point of the arc of the semicircular arc wall 11C is located slightly above the center in the vertical direction of the main plane 10A.

  A pair of bracing ribs 17A and 17A are formed on the lower portion of the back surface of the roll protection board 10 (the surface opposite to the main plane 10A). The bracing ribs 17A and 17A communicate with each other between the positions separated from the lowermost end of the semicircular arc wall 11C by approximately 45 degrees on both sides and the lower end corners of the roll protection panel 10 in the standing posture. A plurality of square mass rooms partitioned by the ribs 17 extend across the diagonal direction.

  A total of four bracing ribs 17 </ b> B are provided on the upper part of the back surface of the roll protection panel 10, one pair on each side. These pair of bracing ribs 17B, 17B extend in parallel downward and obliquely downward from two positions near the corner where the inner surface of the U-shaped groove 11 and the upper surface of the roll protection board 10 intersect each other. The plurality of mass chambers are crossed in the diagonal direction, and are in contact with the side walls 10C and 10C on both sides of the roll protection board 10, respectively. Moreover, the mass chamber of the corner | angular part where the inner surface of the U-shaped groove | channel 11 and the upper surface of the roll protection board 10 intersect is the latching recessed part 15 concerning this invention.

  A pair of corner struts 12 and 12 protrude from the lower corners in the standing posture among the four corners of the roll protection panel 10. The corner column 12 has, for example, a triangular prism structure whose section is a right triangle, and stands upright from the main plane 10A. Side surfaces 12B and 12C that are orthogonal to each other among the side surfaces of the corner column 12 are flush with the outer surfaces of the pair of side walls 10C and 10C that are orthogonal to each other. Then, when the roll protection panel 10 is set in the standing posture, the side surface 12C of the corner column 12 abuts against the floor surface 95 and assists the roll protection panel 10 independence. Further, the side surface of the corner column 12 facing the center side of the main plane 10 </ b> A becomes a guide slope 12 </ b> A for guiding another roll protection panel 10 when the unused roll protection panel 10 is stacked. Yes.

  As shown in FIG. 3A, a tip engagement portion 12 </ b> T is formed to protrude from the tip surface 12 </ b> D of the corner column 12. The tip engaging portion 12T has a triangular shape that is similar to the shape of the tip surface 12D. And as shown in FIG. 6, the thickness which match | combined the main flat plate 20 and the grid | lattice-shaped rib 17 among the roll protection boards 10, and the height from the main plane 10A to the front end surface 12D among the corner support | pillars 12 become the same. The tip engaging portion 12T slightly protrudes from the tip surface 12D in a stepped shape.

  As shown in FIG. 4A, column receiving recesses 16, 16 are formed on the back side of the pair of corner columns 12, 12 on the back surface of the roll protection board 10. Each column receiving recess 16 reduces the protruding amount of the rib 17A and the grid rib 17 located on the back side of the corner column 12 with respect to the protruding amount from the main plate 20 of the entire bracing rib 17A and the entire lattice rib 17. Thus, the entire surface of the roll protection board 10 is depressed. As a result, the tip engaging portion 12T can be engaged in the column receiving recess 16.

  As shown in FIG. 1, a pair of locking projections 14, 14 are formed so as to protrude between the corner columns 12, 12 on the main plane 10 </ b> A of the roll protection board 10. Each locking projection 14 is positioned directly below the locking recesses 15, 15 in the up-down direction of the roll protection panel 10 in the standing posture. Further, as shown in FIG. 6, the locking projection 14 has a triangular shape having an inclined surface 14A that protrudes obliquely from the main plane 10A and a locking surface 14B that stands upright from the main plane 10A. Further, the locking surface 14B is arranged so as to face downward in a state where the roll protection panel 10 is in the standing posture. When the roll protection board 10 is stacked when not in use, the locking projections 14 of the lower roll protection board 10 engage with the locking recesses 15 of the upper roll protection board 10.

  On each side wall 10C of the roll protection board 10, a plurality of belt receivers 18 are formed symmetrically in the vertical and horizontal directions. In addition, a pair of grommet mounting holes 19 and 19 (see FIG. 3A) are formed symmetrically on the side walls 10C and 10C positioned on the upper and lower surfaces of the roll protection board 10 in a standing posture. ing. If necessary, a rubber grommet (not shown) can be attached to the grommet mounting hole 19 to prevent slipping.

  This completes the description of the configuration of the roll protection panel 10 of the present embodiment. Next, functions and effects of the roll protection board 10 of the present embodiment will be described. When the roll protection panel 10 is used, as shown in FIG. 1, the pair of roll protection panels 10 and 10 are raised from the floor 95 of the luggage storage area, and the main planes 10A and 10A are opposed to each other. To. The distance between the main planes 10 </ b> A and 10 </ b> A is substantially the same as the distance between both end faces 90 </ b> A and 90 </ b> A of the roll 90. The above “floor storage floor” includes not only the floor of a warehouse or factory, but also the upper surface of a pallet for a forklift and the upper surface of a truck bed are included in the “floor storage floor”. .

  Next, the roll 90 is lifted and lowered from above between the pair of roll protection panels 10 and 10. Here, in order to lift the roll 90 without damaging it, for example, a pillar material (not shown) is inserted inside the core material 91 so as to protrude from both ends of the core material 91 and hung on both ends of the pillar material. What is necessary is just to lift the rope in the state which does not contact the main-body part of the roll 90. FIG.

  While the roll 90 is lifted and lowered from above between the roll protection boards 10, 10, both end portions of the core material 91 are caused to enter the U-shaped grooves 11 of the roll protection boards 10 from above. Here, since the U-shaped groove 11 is gradually expanded upward, the core material 91 can smoothly enter the U-shaped groove 11. Further, the corner struts 12 and 12 and the protruding portions of the locking projections 14 and 14 formed on the main plane 10A are all disposed below the U-shaped groove 11, so that the roll 90 with the roll 90 standing upright. , 10, the protruding parts do not get in the way.

  As shown in FIG. 2, when both end portions of the core material 91 are in contact with the bottom portion of the U-shaped groove 11 of each roll protection board 10, the column material is pulled out. Then, both end portions of the core material 91 are supported by the bottom portions of the U-shaped grooves 11 in the roll protection panels 10 and 10, and the outer peripheral surface of the roll 90 is held in a state of floating from the floor surface 95. Further, both end surfaces 90 </ b> A and 90 </ b> A of the roll 90 are in a state of being entirely covered with the roll protection panels 10 and 10 except for the portion facing the U-shaped groove 11. By these, the roll protection board 10 protects the roll 90 from being damaged.

  Next, if necessary, the pair of roll protection panels 10 and 10 and the roll 90 are collected together with a belt (not shown). Specifically, a pair of roll protection panels 10, 10 and a roll 90 are arranged inside the annular belt, and a part of the belt is received by the belt receiver 18 at the same position of both roll protection panels 10, 10. In the state, tighten the belt. As a result, the roll protection plates 10 and 10 are pressed against and fixed to both end surfaces 90A and 90A of the roll 90 in a state where a plurality of belts are passed between the roll protection plates 10 and 10. In this state, the pallet can be placed on the upper surface of the pair of roll protection panels 10 and 10 and another roll 90 can be held on the upper surface of the pallet while being held by the roll protection panels 10 and 10.

  When the roll protector 10 is not in use, as shown in FIG. 5, a plurality of stacks can be stacked by turning the corner columns 12 upward and alternately turning 180 degrees. Specifically, the corner support 12 is directed upward, and the roll protection panel 10 is laid on the floor surface 95 (see FIG. 1). Then, another roll protection board 10 is rotated 180 degrees and stacked on the roll protection board 10. Then, as shown in FIG. 4B, the pair of corner columns 12, 12 in the lower roll protection board 10 are located on the sides of the pair of corner cut portions 13, 13 in the upper roll protection board 10. . As a result, the upper and lower roll protection panels 10, 10 can be arranged at regular stacking positions where the outer edges of the four sides are matched. And the stacking height of the roll protection board 10 can be suppressed compared with the past. That is, in the conventional roll protection panel provided with corner posts at the four corners, when stacked, a useless space surrounded by the corner posts is formed between the upper and lower roll protection panels. In the roll protection panel 10, such a useless space is not formed between the roll protection panels 10 and 10, and the stacking height can be suppressed.

  When the roll protection board 10 is stacked, as shown in FIG. 6, the locking projection 14 in the lower roll protection board 10 engages with the locking recess 15 in the upper roll protection board 10, and the roll protection board 10 10 overlapping states are stabilized. When three or more roll protection panels 10, 10 are stacked, the column receiving recess 16 and the tip engagement portion 12T of the corner column 12 are interposed between the roll protection panel 10 and the two lower roll protection panels 10. And engage. This increases the stability of the stacked state.

  Now, in the roll protection panel 10 of the present embodiment, the corner column 12 has a triangular prism structure, while the corner cut portion 13 is a chamfer cut by cutting the same triangle portion as the cross section of the corner column 12 from the corner of the roll protection panel 10. Since it has a structure, it can be easily stacked. That is, as shown in FIGS. 3 (A) and 3 (B), the edge of the roll protection board 10 on the side having the corner columns 12 and 12 is lifted so that the roll protection board 10 is inclined, and the roll When the edge of the lower end side of the protective plate 10 is moved horizontally toward the normal stacking position while being in sliding contact with the main plane 10A of the lower roll protective plate 10, the guide slope 12A in the triangular column structure of the corner column 12 and the corner By guiding the chamfered side surface of the cut portion 13 with the guide, the roll protection board 10 can be easily moved to the normal stacking position with respect to the lower roll protection board 10.

  Further, during the horizontal movement of the roll protection board 10, the end of the upper roll protection board 10 rides on the inclined surface 14 </ b> A of the locking projection 14 of the lower roll protection board 10. When the upper roll protection panel 10 reaches the normal stacking position, the lower locking projection 14 is exceeded and the lower roll protection panel 10 has a lower locking recess 15 as shown in FIG. The locking projection 14 of the roll protection board 10 is engaged. And if the roll protection board 10 is changed from the inclined posture to the horizontal posture, the tip engaging portion 12T and the column receiving recess 16 are engaged. As described above, according to the present embodiment, it is possible to easily perform the stacking operation of the roll protection board 10 including the engagement of the locking projection 14 and the locking recess 15 and the engagement of the tip engaging portion 12T and the column receiving recess 16. it can.

[Second Embodiment]
This embodiment is shown in FIGS. 7 to 9, and core material caps 40, 40 are attached to both ends of the core material 91 of the roll 90. Then, both end portions of the core material 91 are held in the U-shaped grooves 11 and 11 of the roll protection boards 10 and 10 via the core material caps 40 and 40. Specifically, as shown in FIG. 7, the core member cap 40 includes a connecting portion 42 at the rear end portion of the insertion tube 41 that can be inserted into the core member 91. The connecting portion 42 has a U-shaped side surface 42A having substantially the same shape as the inner surface shape extending from the U semicircular wall 11C to the flat plate walls 11B and 11B in the U-shaped groove 11 of the roll protection board 10, and the front of the U-shaped side surface 42A. U-shaped flange walls 51 and 52 project from the edge and the rear edge to the side. Further, the core member cap 40 is formed with a tool receiving groove 43 having an open top surface over the entire axial direction. Since the configuration other than the above is the same as that of the first embodiment, the description overlapping that of the first embodiment is omitted.

  In the configuration of the present embodiment, in order to hold the roll 90 on the roll protection board 10, 10, the insertion cylinders 41, 41 of the core caps 40, 40 are previously attached to both ends of the core 91 as shown in FIG. 8. Fit and install. Then, a pillar material (not shown) is inserted into the insertion tube 41 through the tool receiving grooves 43, 43 of the core caps 40, 40, and both ends of the pillar material are lifted by a rope. Moreover, the edge part of the U-shaped groove | channel 11 is inserted between the U-shaped flange walls 51 and 52 in each core material cap 40 in the process in which the roll 90 is lowered between the roll protection panels 10 and 10 in the standing posture. As shown in FIG. 9, when the U-shaped side surface 42 </ b> A of the coupling portion 42 comes into contact with the inner surface of the lower end portion of the U-shaped groove 11, the core material cap 40 is fixed to the roll protection board 10. The roll 90 is held by the roll protection board 10 via

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) In the first and second embodiments, the corner cut portion 13 has a shape in which the corner portion of the roll protection board 10 is cut out in the same range as the cross-sectional shape of the corner support column 12. A corner cut portion may be formed by cutting a corner portion of the board in a range wider than the cross-sectional shape of the corner column. Specifically, as shown in FIG. 10, the corner column 12 has a prismatic structure with a triangular cross section, and a corner cut portion 13 </ b> V is formed by cutting away the corner of the roll protection panel 10 by a triangle portion larger than the cross section of the corner column 12. It may be formed. In this case, on the main surface 10A of the roll protection board 10, for example, a pair of locking projections 33, 33 are provided at positions different from the locking projections 14, 14, so that the lattice shape in the upper roll protection board 10 is provided. If the rib 17 can be engaged with the mass chamber, even if the corner column 12 and the corner cut portion 13V are not in contact with each other, the engagement between the locking projections 14, 14, 33, 33 and the mass chamber causes the vertical movement. Can be held in the normal stacking position.

  (2) In the first and second embodiments, the corner cut portion 13 has a prismatic shape with a triangular section. However, as shown in FIG. A pair of corner cut portions 31, 31 may be formed by cutting away from the corner portion of the roll protection board 10 by the same square as the cross section of the corner column 30. In this case, one side surface 30C of the corner column 30 abuts against the floor surface to assist the self-supporting of the roll protection panel 10, and the other two side surfaces 30A and 30D of the corner column 30 are orthogonal to each other at the corner cut portion 31. The upper and lower roll protection panels 10, 10 can be positioned in contact with the two surfaces 31A, 31B. The tip engaging portion 30T on the end face of the corner column 30 may be a quadrangle that is similar to the cross-sectional shape of the corner column 30, for example.

  (3) Further, as shown in FIG. 12, for example, a pair of corner columns 32, 32 are formed in a columnar shape, and from the corners of the roll protection board 10 by a square portion inscribed by a circle that is a cross-sectional shape of the corner columns 32 The corner cut portions 31 and 31 may be formed by cutting. In this case, the outer peripheral surface 32A of the corner column 32 abuts against the floor surface and assists the self-supporting of the roll protection panel 10, and the outer peripheral surface of the corner column 32 abuts on the two orthogonal surfaces 31A and 31B in the corner cut portion 31. Thus, the upper and lower roll protection panels 10, 10 can be positioned. The tip engaging portion 32T on the end surface of the corner column 32 may be a circle having a shape similar to the cross-sectional shape of the corner column 32, for example.

  (4) Although the roll protection board 10 of the first embodiment and the roll protection board 10 of the modification shown in FIGS. 10 to 12 include the U-shaped groove 11 as the “core material support portion” of the present invention. Further, a circular hole into which the end portion of the core material 91 can be fitted from the horizontal direction may be provided as the “core material support portion” of the present invention.

The perspective view of the standing posture of the roll protection board which concerns on 1st Embodiment of this invention A perspective view of the roll protector mounted on both end faces of the roll The perspective view which showed the state in the middle of stacking a roll protection board The perspective view which showed the state in the middle of stacking a roll protection board A perspective view showing a state in which roll protection panels are stacked. Side sectional view showing the stacked state of roll protection panels The perspective view of the standing posture of the roll protection board concerning 2nd Embodiment Perspective view of the roll with the core cap attached A perspective view of the roll protector mounted on both end faces of the roll The perspective view which showed the state which accumulated the roll protection panel which concerns on a modification (1). The perspective view which showed the state which accumulated the roll protection board which concerns on a modification (2). The perspective view which showed the state which accumulated the roll protection board which concerns on a modification (3).

Explanation of symbols

10 roll protective panel 10A main plane 11 U-shaped groove (core material support part)
12, 30, 32 Corner strut 12A Guide slope 12T, 30T, 32T Tip engaging portion 13, 13V, 31 Corner cut portion 14, 33 Locking protrusion 14A Inclined surface 14B Locking surface 15 Locking recess 16 Column receiving recess 40 Core Material cap 90 Roll 91 Core material 95 Floor

Claims (5)

A roll protection board having a rectangular plate shape capable of covering the end face of the roll, and having a groove-like or hole-like core material support part capable of supporting the end part of the core material of the roll,
At the time of use, in the roll protection board that is placed in both ends of the roll and is held in a standing position, and holds the roll in a floating state, and is stacked in a laid position when not in use,
Providing a pair of corner pillars that protrude from both corners of the four corners of the roll protection panel that are positioned in the upright position to assist the roll protection panel independence, and the remaining corners of the roll protection panel Are cut in a range equal to or wider than the cross-sectional shape of the corner post to form a pair of corner cut portions,
When the corner post is directed upward and the plurality of roll protection panels are alternately rotated 180 degrees and stacked, the corner support in the lower roll protection panel is turned into the corner cut in the upper roll protection panel. A roll protection board characterized in that it is accommodated on the side of the part and the upper and lower roll protection boards can be arranged at regular stacking positions where the outer edges of the four sides coincide with each other.   A locking projection is formed at a position near the outer edge of the main plane from which the corner column protrudes of the roll protection plate, while a locking projection can be engaged with the back surface of the roll protection plate with respect to the main plane. The roll protection board according to claim 1, wherein a locking recess is formed, and the upper and lower roll protection boards can be held at the regular stacking position by engagement between the locking projection and the locking recess. The core material support portion has the groove shape and supports the core material at the bottom thereof,
The locking protrusion is disposed at a position below the core support part in the roll protection panel in an upright posture, and is gradually inclined away from the main plane as the distance from the core support part increases. The roll protection board according to claim 2, further comprising a locking surface that rises at a right angle from a plane and intersects the inclined surface. The pair of corner columns is sized to protrude upward from another roll platen stacked on the roll platen having the corner columns,
On the opposite surface of the roll protection panel to the pair of corner columns, there is a column receiving recess for engaging the tip of the corner column in the two lower roll protection plates to stop the roll protection plates from shifting. The roll protection board according to claim 1, wherein the roll protection board is provided. While the corner column has a triangular prism structure, the corner cut portion has a chamfered structure in which the same triangular portion as the cross section of the corner column is cut from a corner of the roll protection panel,
5. The upper and lower roll protection panels can be guided to the regular stacking position by the inclined surface of the triangular prism structure of the corner column and the chamfered inclined surface of the corner cut portion. Roll protection board.

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