JP2010058825A - Core cap and roll protector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a core cap and a roll protector with the core cap which can maintain the roll in a horizontal posture even if the roll is loosely fitted on a core. <P>SOLUTION: The core cap 40 includes a groove-formed cylindrical body 42 at a rear end of a fitting shaft body 41 which can be fit to the inside of a core 91, and has a structure in which a pair of flange walls 51 and 52 overhang to sides from a front edge and a rear edge of the groove-formed cylindrical body 42. The groove-formed cylindrical body 42 includes a semi circular arc wall 42A corresponding to a bottom face of a U-shaped groove 11 formed at a roll protective plate 10, a pair of side flat walls 42B, 42B extending upwardly from both ends of the semi circular arc wall 42A, and a ceiling wall 42C connecting upper ends of the pair of side flat walls 42B, 42B. Each of the flange walls 51 and 52 is formed in a U shape overhanging to sides from the semi circular arc wall 42A and the pair of side flat walls 42B, 42B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is fitted and attached to both ends of a tubular core member provided in a roll, and is attached to each of U-shaped grooves provided in a pair of roll protection plates arranged facing each other in a standing state. The present invention relates to a core cap held in a floated state, and a roll protector composed of the core cap and a roll protection plate.

Conventionally, this type of core member cap has a cylindrical shape as a whole and has a structure in which a disk-like flange wall projects from the rear end side to the side. The core cap is fitted inside the tubular core provided in the roll, and the position near the rear end of the core cap is received in the U-shaped groove of the roll protection plate, and the flange wall and the end face of the roll The roll is supported in a state where the opening edge of the U-shaped groove is sandwiched between the roll and the floor (see, for example, Patent Document 1).
JP 2004-142808 A (FIGS. 1, 5, and 6)

  However, in the above-described conventional core material cap, when the fitting between the core material and the core material cap becomes loose due to variations in the outer diameter of the core material and the core material cap (that is, the core material and the core material cap are When the gap between the peripheral surfaces becomes large), the core cap becomes slanted in the horizontal direction and the fitting becomes shallow, and the rear end of the core cap protrudes from the rear surface of the roll protection plate. Obtained.

  The present invention has been made in view of the above circumstances, and a core cap that can be maintained in a horizontal posture parallel to the core material even when the roll is loosely fitted to the core material, and roll protection provided with the core material cap. The purpose is to provide ingredients.

  The core cap according to the first aspect of the invention made to achieve the above object is a pair of fittings fitted to both ends of a tubular core provided in the roll, and arranged to face each other in an upright state. A core cap that is mounted on each U-shaped groove provided on the roll protection plate and holds the roll in a floating state, and is fitted with a fitting shaft body that can be fitted inside the end of the core. Provided at the rear end portion of the shaft body in the fitting direction and received from above in the U-shaped groove, and laterally from the front edge portion and the rear edge portion in the fitting direction of the groove mounting tube body And a pair of flange walls that hold the fitting shaft body in a horizontal posture with the opening edge of the U-shaped groove in between, and the groove mounting cylinder includes a semicircular arc wall corresponding to the bottom surface of the U-shaped groove, A pair of side flat walls extending upward from both ends of the semicircular arc wall and corresponding to both inner side surfaces of the U-shaped groove; It is composed of a ceiling wall that communicates between the upper ends of the side flat walls, and each flange wall is characterized by a U-shape projecting sideways from a semicircular arc wall and a pair of side flat walls. Have

  The invention of claim 2 is characterized in that, in the core material cap of claim 1, the upper end portion of each flange wall is arranged at the same position as the ceiling wall in the vertical direction.

  According to a third aspect of the present invention, in the core cap according to the first or second aspect, the front opening of the groove mounting cylinder is closed and the front edge of the groove mounting cylinder and the outer peripheral surface of the fitting shaft body are closed. The fitting shaft body is extended to the rear side of the roll facing wall and arranged inside the groove mounting cylinder to communicate between the inner surface of the groove mounting cylinder and the fitting shaft body. It is characterized by the fact that reinforcing ribs are provided.

  A roll protector according to a fourth aspect of the present invention includes the core material cap according to any one of the first to third aspects, a U-shaped groove into which the core material cap can be mounted, and can cover the end face of the roll. It is characterized in that it consists of a simple roll protection plate.

  According to a fifth aspect of the present invention, in the roll protector according to the fourth aspect, the opening edge of the U-shaped groove on the rear surface opposite to the roll of the roll protection plate is recessed into a stepped shape, and the It is characterized in that a flange receiving portion that can receive the side flange wall is formed.

[Inventions of Claims 1 and 4]
In the first and fourth aspects of the present invention, when the core material cap is mounted in the U-shaped groove of the standing roll protection plate, the semicircular wall of the core material cap abuts against the bottom surface of the U-shaped groove and the pair of core material caps. The side flat walls are arranged opposite to both inner side surfaces of the U-shaped groove to restrict the rotation of the core cap around the horizontal axis. Further, the contact between the pair of flange walls and the opening edge of the U-shaped groove restricts the tilting and axial movement of the core cap, and the fitting shaft is fitted inside the core of the core cap. The body is stably held in a horizontal position. Here, each flange wall of the core cap of the present invention has a U-shape projecting sideways from the semicircular arc wall and the pair of side flat walls, so that the conventional disk-shaped flange wall Compared with the configuration in which the two are simply paired, a large area of facing the opening edge of the U-shaped groove is ensured. Thereby, deformation due to stress concentration is prevented, and the fitting shaft body can be maintained in a horizontal posture parallel to the core material. Further, the upper ends of the pair of side flat walls are connected by a ceiling wall, and the pair of side flat walls, the ceiling wall, and the semicircular arc wall are closed and reinforced to form a flange. Wall support is stable. Thus, according to the present invention, even if the fitting shaft body of the core material cap and the core material of the roll are loosely fitted and a moment load is applied to the fitting shaft body, the fitting shaft body is parallel to the core material. Can maintain a stable horizontal posture, and the holding of the roll is stable.

[Invention of claim 2]
According to the structure of Claim 2, since the upper end part of each flange wall was arrange | positioned at the same position as a ceiling wall in the up-down direction, compared with the structure where the ceiling wall was located below the upper end part of the flange wall, the flange wall is It becomes difficult to deform.

[Invention of claim 3]
In the core cap according to claim 3, the pair of side flat walls which are annular, the front edge portions of the ceiling wall and the semicircular arc wall are connected to each other by the roll facing walls to reinforce each other, and the strength is increased. In addition, the connecting portion between the groove mounting cylinder and the fitting shaft is increased by the reinforcing rib, and the strength can be increased in this respect.

[Invention of claim 5]
According to the roll protector of claim 5, the flange wall on the rear side of the core cap is received in the flange receiving portion formed by recessing the opening edge of the U-shaped groove in the roll protection plate in the stepped shape. Protrusion of the flange wall to the rear side of the protective plate is suppressed.

  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 protector 80 of this embodiment is used.

  The roll protector 80 is assembled by detachably attaching the roll protection plate 10 and the core cap 40. The roll protection plate 10 is an injection-molded product of synthetic resin, and has a rectangular plate shape as a whole, and a U-shaped groove 11 is formed between the central portion of the rectangle and one side edge portion. . In use, as shown in FIG. 3, the pair of roll protection plates 10 are arranged to face each other with the core cap 40 mounted while standing from the floor 95 of the luggage storage area, When not in use, as shown in FIGS. 11 to 13, the roll protection plate 10 with the core cap 40 removed is laid down parallel to the floor surface 95 and alternately turned 180 degrees.

  Specifically, as shown in FIG. 1, the roll protection plate 10 includes a lattice-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.

  The bottom of the U-shaped groove 11 is located at the central portion of the square of the overall shape of the roll protection plate 10, and the opening of the U-shaped groove 11 is located at the upper edge of the roll protection plate 10 in a standing posture. 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. Note that the center point of the arc of the semicircular wall 11C is located slightly above the center of the roll protection plate 10 in the vertical direction. In the present embodiment, the inner diameter of the semicircular arc wall 11C and the outer diameter of the core material 91 are the same.

  A pair of bracing ribs 17A and 17A are formed on the lower portion of the back surface of the roll protection plate 10 (the surface including the entire lattice-shaped rib 17). The bracing ribs 17A and 17A communicate with each other between a position separated from the lowermost end of the semicircular arc wall 11C by approximately 45 degrees on both sides, and both corners of the lower end of the roll protection plate 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 plate 10, one 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 plate 10 intersect. The plurality of mass chambers are crossed in the diagonal direction, and are connected to the side walls 10C and 10C on both sides of the roll protection plate 10, respectively. Further, a mass chamber at a corner where the inner surface of the U-shaped groove 11 intersects with the upper surface of the roll protection plate 10 is a locking recess 15 that can be engaged with a locking protrusion 14 described later.

  A flange receiving portion 21 is formed on the opening edge of the U-shaped groove 11 on the back surface of the roll protection plate 10. As shown in FIG. 6, in the flange receiving portion 21, the protruding amount of the bracing rib 17 </ b> A and the lattice-shaped rib 17 from the main flat plate 20 becomes the protruding amount of the bracing rib 17 </ b> A and the lattice-shaped rib 17 as a whole from the main flat plate 20. It is smaller than that. Thereby, the flange receiving part 21 is depressed from the whole back surface of the roll protection plate 10. As shown in FIG. 8, the recessed depth of the flange receiving portion 21 gradually becomes shallower from the upper end portion of the tapered wall 11 </ b> A toward the lower end portion in the U-shaped groove 11. Further, the recessed depth of the flange receiving portion 21 corresponding to the semicircular arc wall 11C from the lower end of the taper wall 11A is uniform, and the depth of the uniform portion is as shown in FIG. The thickness of the flange wall 52, which will be described later, provided in the core cap 40 is substantially the same.

  As shown in FIG. 4, a pair of corner columns 12, 12 project from the lower corners in the standing posture among the four corners of the roll protection plate 10. The corner column 12 has, for example, a triangular prism structure with a right-angled cross section, and stands upright from the main plane 10A on the opposite side of the main plate 20 from the grid ribs 17 (see FIG. 1). The side surfaces 12B and 12C 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 orthogonal to each other in the roll protection plate 10. Then, when the roll protection plate 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 self-supporting of the roll protection plate 10. Further, the side surface facing the center side of the main plane 10A among the side surfaces of the corner column 12 becomes a guide slope 12A for guiding another roll protection plate 10 when stacking the unused roll protection plates 10. Yes.

  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. As shown in FIG. 13, the combined thickness of the main flat plate 20 and the lattice-shaped rib 17 in the roll protection plate 10 and the height from the main plane 10 </ b> A to the tip end surface 12 </ b> D of the corner column 12 are the same. The tip engaging portion 12T slightly protrudes from the tip surface 12D in a stepped shape.

  As shown in FIG. 1, 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 plate 10. As shown in FIG. 6, in each column receiving recess 16, the protruding amount of the bracing rib 17 </ b> A and the lattice-shaped rib 17 from the main flat plate 20 is the protruding amount of the bracing rib 17 </ b> A and the entire lattice-shaped rib 17 from the main flat plate 20. It is smaller than Thereby, the support | pillar receiving recessed part 16 is depressed from the whole back surface of the roll protection plate 10, and the above-mentioned front-end | tip engaging part 12T can be engaged in the support | pillar receiving recessed part 16. FIG.

  As shown in FIG. 1, a pair of locking protrusions 14, 14 are formed so as to protrude between the corner struts 12, 12 on the main plane 10 </ b> A of the roll protection plate 10. Each locking projection 14 is positioned directly below the locking recesses 15 and 15 in the vertical direction of the roll protection plate 10 in the standing posture. As shown in FIG. 13, the locking protrusion 14 has a triangular shape having an inclined surface 14 </ b> A protruding obliquely from the main plane 10 </ b> A and a locking surface 14 </ b> B standing upright from the main plane 10 </ b> A. Further, the locking surface 14B is arranged so as to face downward in a state where the roll protection plate 10 is in the standing posture. When the roll protection plate 10 is stacked when not in use, the locking projections 14 of the lower roll protection plate 10 engage with the locking recesses 15 of the upper roll protection plate 10.

  On each side wall 10C of the roll protection plate 10, a plurality of belt receivers 18 are formed symmetrically vertically and horizontally. Further, a pair of grommet mounting holes 19 and 19 (see FIG. 11A) are formed on the side walls 10C and 10C positioned on the upper and lower surfaces of the roll protection plate 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 plate 10. Next, the configuration of the core material cap 40 will be described. As shown in FIG. 10A, the core member cap 40 has a fitting shaft body 41 that can be fitted inside the end portion of the core member 91, and the rear end of the fitting shaft member 41 in the fitting direction. A groove mounting cylinder 42 is provided in the part. In addition, a pair of flange walls 51 and 52 project laterally from the front edge and the rear edge of the groove mounting cylinder 42 in the fitting direction. Furthermore, a tool receiving groove 43 having an open top surface is formed over the entire axial direction of the core cap 40.

  Specifically, the fitting shaft body 41 has a structure including a tool receiving groove 43 in which a part in the circumferential direction of a cylindrical body extending in the horizontal direction is recessed into a U shape over the entire axial direction. . In addition, the upper surface opening of the tool receiving groove 43 in the fitting shaft body 41 is opened in a range of approximately 60 degrees in the circumferential direction of the fitting shaft body 41. The bottom of the tool receiving groove 43 is semicircular, and the lowermost end of the bottom is disposed near the center of the cylindrical body that is the overall shape of the fitting shaft body 41.

  On the outer peripheral surface of the fitting shaft body 41, trough portions 41A extending in the axial direction are formed at a plurality of positions in the circumferential direction. And between the adjacent valley parts 41A becomes the mountain part 41B which rounded and swelled. Thereby, the frictional resistance at the time of inserting / extracting the fitting shaft body 41 in the core material 91 is suppressed. Further, a taper portion 41 </ b> C is formed between the fitting shaft body 41 and a position closer to the end on the groove mounting cylinder 42 side to the front surface of the groove mounting cylinder 42. The tapered portion 41 </ b> C has a structure in which the outer diameter of the fitting shaft body 41 is gradually increased as the roll facing wall 53 is approached. Thereby, when the fitting shaft body 41 is pushed into the taper portion 41 </ b> C with respect to the core material 91, the backlash between the fitting shaft body 41 and the core material 91 is suppressed.

  As shown in FIG. 5, the groove mounting cylinder 42 includes a semicircular wall 42A corresponding to the inner surface of the semicircular arc wall 11C in the U-shaped groove 11, and extends upward from both ends of the semicircular wall 42A. 11, a pair of side flat walls 42B, 42B corresponding to the inner surface of the flat plate wall 11B, and a ceiling wall 42C connecting the upper ends of the pair of side flat walls 42B, 42B. Further, the central portion between the pair of side flat walls 42B and 42B in the ceiling wall 42C is curved downward in a U shape to form the above-described tool receiving groove 43, as shown in FIG. As described above, the bottom inner surface of the tool receiving groove 43 in the fitting shaft body 41 and the bottom inner surface of the tool receiving groove 43 in the groove mounting cylinder 42 are flush with each other. Further, the upper ends of the pair of side flat walls 42B, 42B are located above the upper end of the fitting shaft 41, and the upper edge of the tool receiving groove 43 extends from the groove mounting cylinder 42 to the fitting shaft. It is lowered stepwise toward 41.

  Further, the center point of the arc of the semicircular wall 42A coincides with the center point of the arc of the entire outer peripheral surface of the fitting shaft 41, and the outer diameter of the semicircular wall 42A is equal to that of the semicircular wall 11C in the U-shaped groove 11. It is the same as the inner diameter. That is, as described above, since the inner diameter of the semicircular arc wall 11C is the same as the outer diameter of the core material 91, the outer diameter of the semicircular arc wall 42A is the same as the outer diameter of the core material 91. Stepped larger than the outer diameter of the fitting shaft body 41 to be fitted.

  As shown in FIG. 10A, the front surface of the groove mounting cylinder 42 is closed by a roll facing wall 53. Specifically, the roll facing wall 53 blocks the entire opening surrounded by the semicircular arc wall 42 </ b> A, the side flat walls 42 </ b> B and 42 </ b> B, the ceiling wall 42 </ b> C, and the inner wall of the tool receiving groove 43. At the same time, the front edge of the groove mounting cylinder 42 communicates with the outer peripheral surface of the fitting shaft 41, and further, the rear end portion of the inner space of the fitting shaft 41 is closed as shown in FIG. is doing. Further, the fitting shaft body 41 intersects with the roll facing wall 53 and extends also to the inside of the groove mounting cylinder body 42. The portion of the fitting shaft 41 that extends rearward from the roll facing wall 53 (inside the groove mounting cylinder 42) is thinner than the portion that extends forward from the roll facing wall 53. Furthermore, the protruding amount of the fitting shaft body 41 from the roll facing wall 53 to the rear is slightly smaller than the protruding amount of the groove mounting cylinder 42 from the roll facing wall 53 to the rear.

  A reinforcing rib 45 is formed in the groove mounting cylinder 42 to communicate between the inner surface of the groove mounting cylinder 42 and the fitting shaft body 41. As shown in FIG. 10B, the reinforcing ribs 45 extend horizontally from both ends of the semicircular arc wall 42 </ b> A of the groove mounting cylinder 42 and are connected to the bottom arc wall of the tool receiving groove 43. The ribs 45A and 45A, and the vertical ribs 45B and 45B extending right below from the intersection of the bottom arc wall of the tool receiving groove 43 and the horizontal ribs 45A and 45A. Further, the reinforcing rib 45 is connected to the roll facing wall 53 at the front end side, and the protruding amount of the reinforcing rib 45 from the roll facing wall 53 to the rear is the protrusion of the fitting shaft body 41 from the roll facing wall 53 to the rear. It is the same as the amount.

  As shown in FIGS. 10A and 10B, the pair of flange walls 51 and 52 projecting sideways from the front edge portion and the rear edge portion of the groove mounting cylinder 42 are both U-shaped. It has become. Specifically, each of the flange walls 51 and 52 has a U shape projecting laterally from the semicircular arc wall 42A and the pair of side flat walls 42B of the groove mounting cylinder 42, as shown in FIG. The overhang of the flange wall 52 on the rear side is larger than the flange wall 51 on the front side (fitting shaft body 41 side). Further, the front surface of the front flange wall 51 and the front surface of the roll facing wall 53 are flush with each other.

  The description regarding the structure of the roll protector 80 of this embodiment is above. Next, the effect of the roll protector 80 of this embodiment will be described. When the roll protector 80 is not used, the roll protection plate 10 and the core cap 40 are separated. Then, as shown in FIG. 12, a plurality of roll protection plates 10 can be stacked by turning corner posts 12 upward and alternately turning 180 degrees. Specifically, the roll support plate 10 is laid on the floor surface 95 with the corner column 12 facing upward. Then, another roll protection plate 10 is rotated 180 degrees and stacked on the roll protection plate 10. At this time, as shown in FIG. 11 (A) and FIG. 11 (B), the roll protective plate 10 is lifted to the inclined side by lifting the edge of the roll protective plate 10 on the side having the corner struts 12, 12. While the lower edge of the roll protection plate 10 is brought into sliding contact with the main plane 10A of the lower roll protection plate 10, the outer edges of the four sides of the upper and lower roll protection plates 10 and 10 are in the regular stacking positions. Just move horizontally.

  Then, the roll protection plate 10 can be easily moved to the normal stacking position with respect to the lower roll protection plate 10 by the guide slope 12A in the triangular pillar structure of the corner column 12 and the chamfered side surface of the corner cut portion 13. . Further, during the movement, the end of the upper roll protection plate 10 gets over the locking projection 14 of the lower roll protection plate 10 and the upper roll protection plate 10 is locked as shown in FIG. The locking protrusion 14 of the lower roll protection plate 10 is engaged with the recess 15. When the roll protection plate 10 is changed from the inclined posture to the horizontal posture, the tip engaging portion 12T and the column receiving recess 16 are engaged. Thereby, the stacked state of the roll protection plate 10 is stabilized.

  When the roll protector 80 is used, a pair of roll protectors 80 is prepared for one roll 90. In addition, each roll protector 80 is separated from the roll protection plate 10 and the core cap 40 at the preparation stage.

  Then, as shown in FIG. 2, the fitting shaft bodies 41, 41 of the core material caps 40, 40 are fitted and attached to the inner sides of both ends of the core material 91. Next, a pillar material (not shown) is inserted into the core material 91 through the tool receiving grooves 43 and 43 of the both core material caps 40 and 40, and both ends of the pillar material are lifted with a rope. Before attaching the core material cap 40 to the core material 91, a pillar material (not shown) is inserted into the core material 91, and the core material caps 40, 40 are fitted and attached to both ends of the core material 91 in this state. Also good.

  On the other hand, the pair of roll protection plates 10 and 10 are erected from the floor surface 95 of the luggage storage area and are arranged in a state where the main planes 10A and 10A face each other. The interval between the main planes 10 </ b> A and 10 </ b> A is substantially the same as the interval between the roll facing walls 53 and 53 of the core member caps 40 and 40 attached to both ends of the core member 91. 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 rolled roll 90 is lowered between the pair of roll protection panels 10 and 10. In the descending process, the opening edge of the U-shaped groove 11 is inserted between the pair of flange walls 51 and 52 in the core member cap 40. When the semicircular arc wall 42A of the core material cap 40 comes into contact with the bottom surface of the U-shaped groove 11, the attachment of the core material cap 40 to the roll protection plate 10 is completed.

  Then, the pair of side flat walls 42B and 42B of the core material cap 40 are disposed to face both inner surfaces of the U-shaped groove 11, and the rotation of the core material cap 40 around the horizontal axis is restricted. Further, the contact between the pair of flange walls 51 and 52 and the opening edge of the U-shaped groove 11 restricts the tilting and axial movement of the core cap 40, and the core cap 40 has an inner side of the core 91. The fitted shaft body 41 fitted is stably held in a horizontal posture.

  Here, since each flange wall 51, 52 which the core material cap 40 of this embodiment has has a U-shape protruding sideways from the semicircular arc wall 42A and the pair of side flat walls 42B, 42B. Compared to the conventional configuration in which the disk-shaped flange walls are simply paired, a wide area facing the opening edge of the U-shaped groove 11 is ensured. This prevents the deformation due to stress concentration. Further, the upper ends of the pair of side flat walls 42B and 42B are connected by a ceiling wall 42C, and the pair of side flat walls 42B and 42B, the ceiling wall 42C and the semicircular arc wall 42A are closed. Further, the front edges of the side flat wall 42B, the ceiling wall 42C, and the semicircular arc wall 42A are connected to the roll facing wall 53 to reinforce each other, and in addition, the reinforcing rib 45 Also, since the groove mounting cylinder 42 and the fitting shaft body 41 are connected and reinforced, the strength of the core cap 40 is increased.

  Thus, in the roll protector 80 of the present embodiment, even when the fitting shaft body 41 of the core material cap 40 and the core material 91 of the roll 90 are loosely fitted and a moment load is applied to the fitting shaft body 41, The fitting shaft body 41 can be maintained in a horizontal posture parallel to the core material 91, and the holding of the roll 90 is stabilized. When the core cap 40 is attached to the roll protection plate 10, the rear flange wall 52 of the core cap 40 is received by the flange receiving portion 21 of the roll protection plate 10, and the rear surface side of the roll protection plate 10. Since the flange wall 52 does not protrude, the flange wall 52 is not caught when the roll protection plates 10 holding the roll 90 are arranged side by side.

  In the present embodiment, the inner diameter of the semicircular wall 11C in the U-shaped groove 11 of the roll protection plate 10 is the same as the outer diameter of the semicircular wall 42A in the groove mounting cylinder 42 of the core cap 40, and the core Since the outer diameter of the material 91 is the same, the end portion of the core material 91 is directly received in the U-shaped groove 11 of the roll protection plate 10 without attaching the core material cap 40 to the core material 91. The roll 90 can also be supported by being brought into surface contact with the semicircular arc wall 11C.

[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 above embodiment, the upper ends of the flange walls 51 and 52 are arranged at the same position as the ceiling wall 42C in the vertical direction, and there is no wall projecting upward from the ceiling wall 42C. As shown in the core cap 40V shown in FIG. 4, projecting walls 51T and 52T are projected upward from the front and rear edges of the ceiling wall 42C, and the projecting walls 51T and 52T are connected to the upper ends of the flange walls 51 and 52. It may be structured.

  (2) The roll protection plate 10 of the above embodiment is made of synthetic resin, but may be made of wood.

The perspective view of the roll protector which concerns on one Embodiment of this invention. The perspective view of the state which attached the core material cap to the both ends of the core material The perspective view of the state which hold | maintained the roll with the roll protector A perspective view of the core cap attached to the roll protection plate Sectional drawing in the AA cross section of FIG. Partially broken perspective view before mounting the roll protector on the roll protection plate Partially broken perspective view with roll protector mounted on roll protection plate Side cross-sectional view before attaching roll protector to roll protection plate Side cross-sectional view after attaching roll protector to roll protection plate Perspective view of core cap The perspective view which showed the state in the middle of stacking a roll protection plate The perspective view which showed the state which accumulated the roll protection plate Side sectional view showing the state where roll protection plates are stacked The perspective view of the roll protector which concerns on a modification

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Roll protection plate 11 U-shaped groove 20 Main flat plate 21 Flange receiving part 40, 40V Core material cap 41 Fitting shaft body 42 Groove mounting cylinder 42A Semicircular wall 42B Side flat wall 42C Ceiling wall 45 Reinforcement rib 51, 52 Flange Wall 53 Roll facing wall 80 Roll protector 90 Roll 91 Core material

Claims (5)

The roll is floated by being fitted and attached to both ends of a tubular core member provided in the roll and mounted in U-shaped grooves provided in a pair of roll protection plates arranged to face each other in an upright state. A core cap that holds in a state,
A fitting shaft that can be fitted inside the end of the core;
A groove mounting cylinder provided at the rear end of the fitting shaft body in the fitting direction and received from above in the U-shaped groove;
A pair of side walls projecting laterally from the front and rear edges in the fitting direction of the groove mounting cylinder and holding the fitting shaft in a horizontal posture with the opening edge of the U-shaped groove in between. With flange walls,
The groove mounting cylinder includes a semicircular wall corresponding to the bottom surface of the U-shaped groove, and a pair of side flats corresponding to both inner side surfaces of the U-shaped groove extending upward from both ends of the semicircular wall. A wall and a ceiling wall communicating between the upper ends of the pair of side flat walls,
Each of the flange walls has a U-shape projecting laterally from the semicircular arc wall and the pair of side flat walls.   The core member cap according to claim 1, wherein an upper end portion of each flange wall is arranged at the same position as the ceiling wall in the vertical direction. A roll-facing wall that closes the front opening of the groove mounting cylinder and communicates between the front edge of the groove mounting cylinder and the outer peripheral surface of the fitting shaft;
Reinforcing ribs that extend from the roll facing wall to the rear side of the fitting shaft body and are arranged on the inner side of the groove mounting cylinder, and communicate between the inner surface of the groove mounting cylinder and the fitting shaft body. The core material cap according to claim 1, wherein the core material cap is provided.   It consists of the core material cap in any one of Claims 1 thru | or 3, and the roll protection plate which has the said U-shaped groove | channel which can mount | wear with the said core material cap, and can cover the end surface of the said roll. Features roll protective equipment.   The opening edge of the U-shaped groove on the rear surface opposite to the roll of the roll protection plate is recessed in a stepped shape to form a flange receiving portion that can receive the flange wall on the rear side of the core cap. The roll protector according to claim 4, wherein the roll protector is provided.

Images