A packing box has a bottom panel, end panels raised from first edges of the bottom panel, side panels arranged adjacently to the end panels, edge panels connected to side edges of the end panels via outer panel fold lines, fold-back panels arranged on inner side surfaces of the edge panels, inner pa
A packing box has a bottom panel, end panels raised from first edges of the bottom panel, side panels arranged adjacently to the end panels, edge panels connected to side edges of the end panels via outer panel fold lines, fold-back panels arranged on inner side surfaces of the edge panels, inner panels arranged on inner side surfaces of the end panels, and reinforcing panels continuously formed with the fold-back panels via first fold lines and the inner panels via second fold lines. The reinforcing panel 16 is formed in an inwardly projecting manner between the fold-back panel and the inner panel. Any of the first and second fold lines positioned on a side closer to the outer panel fold line than a projecting top portion is arranged away from the outer panel fold line by a distance.
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1. A packing box comprising: a bottom panel;end panels raised from first edges of the bottom panel;side panels raised from second edges of the bottom panel extending in a direction which intersects with the first edges, the side panels arranged adjacently to the end panels;edge panels connected to s
1. A packing box comprising: a bottom panel;end panels raised from first edges of the bottom panel;side panels raised from second edges of the bottom panel extending in a direction which intersects with the first edges, the side panels arranged adjacently to the end panels;edge panels connected to side edges of the end panels via outer panel fold lines, and fixed to inner side surfaces of the side panels arranged adjacently to the edge panels;fold-back panels arranged on inner side surfaces of the edge panels;inner panels arranged on inner side surfaces of the end panels; andreinforcing panels continuously formed with the fold-back panels via first fold lines, and continuously formed with the inner panels via second fold lines, each reinforcing panel being formed in an inwardly projecting manner between the fold-back panel and the inner panel, wherein any of the first fold line and the second fold line positioned on a side closer to the outer panel fold line than a projecting top portion is arranged away from the outer panel fold line by a distance. 2. The packing box according to claim 1, wherein the inner panel is fixed to the end panel, wherein the first fold line positioned on the side closer to the outer panel fold line than the projecting top portion is arranged away from the outer panel fold line by a distance, andwherein the reinforcing panel is projected inward from the end panel side. 3. The packing box according to claim 1, wherein a third fold line is provided between the first and second fold lines of the reinforcing panel, the third fold line extending parallel to the first and second fold lines. 4. The packing box according to claim 3, wherein the packing box is made of a paper-made corrugated board sheet, and wherein a stage collapsed portion where a panel thickness of the paper-made corrugated board sheet is reduced by compression is formed on the reinforcing panel with a predetermined width so as to include the third fold line. 5. The packing box according to claim 1, wherein the fold-back panel is fixed to the inner side surface of the edge panel. 6. The packing box according to claim 1, wherein the fold-back panel, the reinforcing panel and the inner panel are integrally formed with the edge panel. 7. A box manufacturing apparatus for automatically manufacturing the packing box according to claim 2, the box manufacturing apparatus comprising: a first coating part which applies by coating an adhesive agent to the inner panel or a portion of the end panel to which the inner panel overlaps;a fixing part which folds the fold-back panel against the edge panel, and fixes the inner panel continuously formed with the fold-back panel to the end panel;a second coating part which applies by coating an adhesive agent to the edge panel or a portion of the side panel to which the edge panel overlaps; anda forming part which folds the edge panel against the end panel, bends the first and second fold lines on both sides of the reinforcing panel thus making the reinforcing panel project inwardly, and folds the end panel against the bottom panel and, thereafter, folds the side panel against the bottom panel, and fixes the edge panel and the side panel to each other. 8. The box manufacturing apparatus according to claim 7, wherein the forming part includes a forming plate which is arranged in the vicinity of the first fold line, and guides the reinforcing panel such that the reinforcing panel is folded against the fold-back panel along the first fold line in folding the edge panel against the end panel. 9. The box manufacturing apparatus according to claim 8, wherein the forming part includes: an upper die which is configured to make the forming plate slideable to a reinforcing panel side from a fold-back panel side; anda lower die which is arranged in front of the upper die in an advancing direction of the upper die, and guides folding of the edge panel against the end panel. 10. The box manufacturing apparatus according to claim 9 further comprising a biasing member which biases the forming plate to the fold-back panel side from the reinforcing panel side. 11. The box manufacturing apparatus according to claim 9 or claim 10, wherein the forming part includes: a male die which is configured to move a blank for forming the packing box downward by pressing the bottom panel from above; anda female die which is arranged below the lower die, and is configured to fold the end panel and the side panel against the bottom panel due to the movement of the blank by the male die. 12. The box manufacturing apparatus according to claim 7, wherein the fixing part includes: a folding member which folds the fold-back panel against the edge panel; anda pressing member which presses at least the inner panel to the end panel. 13. The box manufacturing apparatus according to claim 12, wherein the fixing part further includes a positioning member for positioning an area in the vicinity of a fold line between the edge panel and the fold-back panel. 14. The box manufacturing apparatus according to claim 12, wherein the folding member is configured to fold the fold-back panel against the edge panel through a first folding step where the folding member is moved upward from below the fold-back panel thus folding the fold-back panel upward against the edge panel, a second folding step where the folding member is moved inward toward an end panel side thus folding the fold-back panel inward against the edge panel, and a third folding step where the folding member is moved downward thus making the fold-back panel overlap with the edge panel. 15. The box manufacturing apparatus according to claim 7 further comprising a temporarily folding part which is disposed in front of the first coating part, and is configured to impart a folding habit by folding the reinforcing panel along a third fold line provided between the first and second fold lines.
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이 특허에 인용된 특허 (8)
McClure Jack A. (Garden City KS), Automatic set-up carton with corner posts.
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