JP5882757B2 - Trapezoidal packaging box and its sealing device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a trapezoidal packaging box that can be used for packaging various-sized articles and a sealing device thereof that are used in mail-order sales and home delivery industries that handle various articles.

  Conventionally, in Patent Document 1 below, as shown in FIG. 11, a pair of end plates 51 and side plates 52 are connected to each other via a corner ridge line 53, the bottom surface is closed, and the upper ends of the end plates 51 and side plates 52. Describes a variable height packaging box based on a corrugated cardboard box in which lid plates 54 and 55 are connected in series.

  In this packaging box, a middle fold line 56 is inserted in the middle portion of the end plate 51 and the side plate 52 in the vertical direction, the undulating portions 51a and 52a are located above the middle fold line 56 of the end plate 51 and the side plate 52, and adjacent undulating portions 51a and 52a. And a support piece 57 is projected from the side edge of the undulating portion 52a.

  When packaging an article having a high height by such a packaging box, the support piece 57 is placed along the inner surface of the undulating portion 51a while the end plate 51 and the side plate 52 are stretched, and the cover plate 54, As shown in FIG. 12, the cover plates 55 that are outside are brought into contact with each other and sealed by attaching a tape from the contact portion to the end plate 51.

  On the other hand, when packaging an article having a low height, as shown in FIG. 13, the undulating portions 51a, 52a and the cover plates 54, 55 of the end plate 51 and the side plate 52 are bent along the middle folding line 56, The cover plates 54 that are the outer sides are overlapped with each other, and sealed by attaching a tape from the abutting portion to the side plate 52.

  In this way, the height of the packaging box is changed according to the height of the articles to be stored so that the vertical gap in the box does not become too large, and the paper or bubble cushioning material rolled up in the gap in the box When the item is packed, rattling in the box during transportation of the article can be suppressed.

  In addition, a method of preventing rattling in the box by applying an adhesive to the top surface of the bottom plate of the packaging box while the article is placed on a cardboard base plate and wrapped with a shrink film is adopted. There is also.

Japanese Patent Laid-Open No. 9-156631

  However, in the packaging box as described above, because the height in the distribution process is uneven depending on the goods to be stored, the handling property when loading on the truck bed etc. and the stability in the loaded state are impaired, There is a problem that sealing with a machine is difficult.

  In addition, if paper or foam cushioning material is packed in the gap between the packaging box and the article, there is a problem that a large amount of dust is generated after opening, and if the article is wrapped with shrink film and attached with an adhesive, the article is fixed when returned There is a problem that it cannot be done.

  SUMMARY OF THE INVENTION An object of the present invention is to make it possible to fix and package articles of various sizes in a box using a packaging box of the same size and easily seal it with a machine.

  In order to solve the above-described problems, the present invention includes a pair of end plates and side plates connected via corner ridge lines, closed bottom surfaces, and inner flaps connected to upper ends of the end plates and side plates, respectively. In a packaging box in which outer flaps are stacked one after another and sealed by sealing the outer flaps, at least one end plate is inserted with a diagonal line away from the corner ridge line from the lower part of each side to the upper side, and sandwiched between the diagonal lines of the end plate Pushing the middle part inwardly, the end plate is valley-folded so that the surface side is recessed along the diagonal line, and the end plate is tilted inwardly upward, and the cross-sectional shape between both end plates is trapezoidal It was made to seal in the state that became.

  Further, the device for tape-sealing the packaging box is a push-and-tilt unit that includes a front presser and a rear presser that are respectively driven with respect to the packaging box by conveying the packaging box, bending the inner flap and the outer flap sequentially. While holding the front end plate with the front pusher and holding the rear end plate with the rear pusher, tilt both end plates upward and tilt the tape inward from the front end plate. It is assumed that the rear end plate is pasted through the abutting portion of the outer flap.

  In the packaging box according to the present invention, when the article and the pad placed thereon are stored and sealed, the edge of the pad comes into contact with the inner surface of the end plate inclined inward toward the upper side, and the rise of the pad is suppressed, Regardless of the size of the article, the article can be fixed so as not to move in the box.

  For this reason, when packaging articles of various sizes, packaging boxes of the same size can be used, and handling in the distribution process and stability during loading are improved.

  In addition, the packaging work and packaging materials used can be streamlined to reduce packaging costs, and no large amount of stuffed garbage is generated after opening. be able to.

  The packaging box can be efficiently sealed by pressing the front and rear end plates with a front pressing tool and a rear pressing tool provided in the sealing device and attaching a tape.

The figure which shows the blank and flat pad of the trapezoid packaging box which concern on embodiment of this invention The perspective view which shows the insertion process of the articles | goods same as the above and a planar pad The perspective view which shows the accommodation state of the articles | goods and flat type pad same as the above The perspective view which shows the sealing state same as the above Sectional drawing along the VV line in FIG. 4 same as the above. The perspective view which shows the usage example of a solid-type pad same as the above The perspective view which shows the sealing state of other embodiment of the trapezoid packaging box same as the above. Schematic diagram of process for sealing device for trapezoidal packaging box Schematic front view showing the operation of the sealing device Schematic plan view showing another embodiment of the pushing and tilting unit same as above The perspective view which shows the cover open state of the conventional variable height packaging box The perspective view which shows the sealing state which made height high same as the above The perspective view which shows the sealing state which made the height same as the above low

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  This packaging box is formed from a cardboard blank as shown in FIG. In this blank, each pair of end plates 1 and side plates 2 are alternately connected via a corner ridge line 3, and a passage piece 4 is connected to the outer end of one side plate 2 via a corner ridge line 3. Yes. Bottom plates 5 and 6 are connected to the lower ends of the end plate 1 and the side plate 2, respectively, an inner flap 7 is connected to the upper end of the end plate 1, and an outer flap 8 is connected to the upper end of the side plate 2.

  The end plate 1 is provided with a diagonal fold line 9 that is separated from the corner ridge line 3 from the lower corner angle to the upper side, and the joint piece 4 also corresponds to the diagonal fold line 9 of the opposite end plate 1 to correspond to the diagonal fold line 9. Is put. The oblique fold line 9 of the end plate 1 is a lead ruler in which the stamped line and the cut line are interrupted so as to allow valley folding in which the surface side of the cardboard is depressed.

  The end plate 1 and the inner flap 7 are separated by making a cut 10 between the upper ends of the corner ridge line 3 and the oblique fold line 9. The cut line 10 may be formed by cutting a boundary portion between the inner flap 7 and the end plate 1 in a triangular shape from both sides. Further, a recess 11 by a notch is provided on the abutting portion side of both side edges of the outer flap 8.

  On the other hand, the flat pad P made of corrugated cardboard used for packaging the goods together with the packaging box is of a size slightly smaller than the inner bottom portion of the packaging box, and its peripheral edge is used to hang a finger when taking it into and out of the packaging box. A plurality of finger hooks 12 cut into an arc shape are formed.

  In order to assemble the packaging box blank as described above, as shown in FIG. 2, each pair of end plates 1 and side plates 2 is bent into a square tube shape along the corner ridgeline 3, and the passage piece 4 is placed on the opposite side. Affixed to the inner surface of the end plate 1, the bottom plates 5, 6 are bonded to the outside of the folding line for folding the bottom plate 6, the opposing bottom plates 6 are engaged with each other, and the bottom surface is closed.

  When packaging the product G, the product G is stored in the packaging box from above, and the pad P is also stored in the packaging box so as to be placed on the product G as shown in FIG. Here, as the article G, a small product having a low height is illustrated.

  Next, as shown in FIGS. 4 and 5, the inner flap 7 and the outer flap 8 are sequentially folded and overlapped, and the intermediate portion sandwiched between the oblique lines 9 of the end plate 1 is pushed inward, so that the end plate 1 is tilted. In the state where the valley is folded along the fold line 9 and the end plate 1 is inclined inward so that the upper end is directed to the inside of the recess 11, the tape T is passed from one end plate 1 through the abutting portion of the outer flap 8. Sealing is performed by pasting up to the other end plate 1. At this time, the side plate 2 is also inclined slightly upward and inward.

  When sealed in this way, the cross-sectional shape between the two end plates 1 becomes a trapezoidal shape, and the edge of the pad P comes into contact with the inner surface of the end plate 1 inclined inward and the pad P is raised. Therefore, the article G can be fixed so as not to move in the box.

  Further, even when the height of the article G is high, the portion of the end plate 1 positioned above the pad P bends inward, the edge of the pad P abuts on the inner surface of the end plate 1, and the pad P rises. Therefore, the article G can be fixed so as not to move in the box.

  For this reason, even when packaging articles G of various sizes, packaging boxes of the same size can be used, and handling in the physical distribution process and stability during loading are improved.

  In addition, the packaging work and packaging materials used can be streamlined to reduce packaging costs, and a large amount of stuffed garbage is not generated after opening, and the product G is fixed at the time of return as well as at the time of shipment. can do.

  In addition, as shown in FIG. 6, when the three-dimensional type | mold which was made to oppose so that the space | interval of the center side might become narrow as a pad P as a pad P, when using the solid type thing to a packaging box, When the pad P is inserted, the pad P is curved along the crease line 13, and the storage space below the pad P is higher at the center side and lower toward the periphery, so that not only the vertical jump of the article G, Horizontal movement is also suppressed.

  If such a pad P is provided with a raised portion 14 that is bent upward on both sides and is inscribed in the side plate 2, the pad P is stabilized inside the packaging box.

  In addition, if the finger hooks 12 provided along both edges and the crease line 13 are arranged at positions that are not symmetrical with respect to the center line in the vertical and horizontal directions of the pad P, Bending can be prevented.

  By the way, in the said embodiment, although the thing of the one-touch bottom type | mold which can be assembled by only extending the bottom plates 5 and 6 from a folded state was illustrated as a packaging box, the bottom plate is simply closed by a bottom plate like a grooving mold. Various types, such as those that are stacked and fixed, can be employed.

  Moreover, although what provided the diagonal fold line 9 in both the end plates 1 was illustrated, even if the diagonal fold line 9 is provided only in one end plate 1, the same effect can be acquired.

  Further, although the example in which the oblique line 9 is inserted from the lower corner of the end plate 1 is illustrated, the oblique line 9 is considered in consideration of the minimum height of the article G as in another embodiment shown in FIG. The end plate 1 may be inserted from a position slightly above the lower corner angle.

  Furthermore, the both side edges of the outer flap 8 may be cut obliquely from the boundary with the side plate 2 along the upper edge of the end plate 1 bent along the oblique fold line 9 in consideration of mechanical suitability described later. .

  In addition, the passage piece 4 may extend from one end plate 1 and overlap the side plate 2 so as not to overlap a portion where the oblique line 9 of the end plate 1 is put. Thereby, it is not necessary to put the oblique line 9 in the passage piece 4.

  Next, a process and an apparatus for sealing the above packaging box with a packaging machine will be described with reference to FIGS.

  In this sealing device, on the upstream side of the conveyor 21 that conveys the packaging box, a box supply unit 22 that intermittently supplies the packaging box to the conveyor 21 in accordance with the operation of the cylinder is provided, and rotates on a vertical surface above the conveyor 21. An internal folding hammer 23, an internal folding guide 24 that goes downwards in the center in the width direction, and a pair of external folding guides 25 that go downwards while decreasing in the width direction from both sides to the downstream side, The pushing / tilting unit 26 and the taping unit 27 are provided so as to be movable up and down according to the size of the packaging box.

  The pushing and tilting unit 26 has a front pusher 31 and a rear pusher 32, which are attached to endless bands 33 and 34 that are respectively rotated by a servo motor, and move in the transport direction independently of each other. ing.

  The taping unit 27 is configured to press the tape T fed from the tape reel 35 against the packaging box by a roller 36 attached to a swinging arm.

  In the sealing process by such a sealing device, the packaging box in which the inner flap 7 and the outer flap 8 are opened in an upright state is placed on the conveyor 21 from the box supply unit 22 and is transported by the conveyor 21, while the front side in the transport direction. The inner flap 7 is bent along the inner folding guide 24, the rear inner flap 7 is bent by pushing the inner folding hammer 23, and then the outer flaps 8 on both sides are overlapped with the inner folding guide 7 along the outer folding guide 25. Bend like so.

  In the push-and-tilt unit 26, the both end plates 1 are valley-folded along the oblique line 9 while the front end plate 1 is pressed by the front presser 31 and the rear end plate 1 is pressed by the rear presser 32. Then, the tape T is pasted from the front end plate 1 to the rear end plate 1 through the abutting portion of the outer flap 8 while being held in an inwardly inclined state upward.

  In this way, the packaging box holds the tape T with the taping unit 27 by pressing the front and rear end plates 1 with the front pressing tool 31 and the rear pressing tool 32 of the pushing / tilting unit 26 provided in the sealing device. By sticking, it can be sealed efficiently.

  In addition, as shown in FIG. 10, the pushing / tilting unit 26 swings the arm-type front pusher 31 and the rear pusher 32 with a cylinder 37, and the front and rear end plates 1 of the packaging box. May be pressed strongly. In this case, it is preferable to temporarily stop the conveyance of the packaging box and hold the end plate 1.

DESCRIPTION OF SYMBOLS 1 End plate 2 Side plate 3 Corner ridge line 4 Passage piece 5,6 Bottom plate 7 Inner flap 8 Outer flap 9 Diagonal fold line 10 Cut 11 Recess P Pad 12 Finger hook part 13 Fold line 14 Upright part 21 Conveyor 22 Box supply part 23 Inside Folding hammer 24 Inner folding guide 25 Outer folding guide 26 Pushing and tilting unit 27 Taping unit 31 Front pushing tool 32 Rear pushing tool 33, 34 Endless belt 35 Tape reel 36 Roller 37 Cylinder G Article T Tape

Claims (2)

Each pair of end plates (1) and the side plate (2) it is continuously provided through the corner ridge (3), the bottom is closed, the end plate (1) and the side plate (2) an upper end within which is continuously provided each with flaps (7) and outer flaps (8) overlap, the outer flap (8) to each other is match-sealed has been wrapped box,
At least one end plate (1), which is placed obliquely fold line (9) away from the corner ridge (3) over both sides bottom upward, the end plate (1) is along the oblique fold lines (9) The cross-sectional shape between the two end plates (1) is valley-folded so that the surface side is recessed, and the middle part sandwiched between the oblique lines (9) of the end plate (1) is inclined inward from the bottom to the top. A trapezoidal packaging box which is sealed in a trapezoidal trapezoidal shape.   A device for tape-sealing the packaging box according to claim 1, wherein the front pressing device is configured to convey the packaging box, sequentially bend the inner flap (7) and the outer flap (8), and to drive the packaging box respectively. The front end plate (1) is held by the front pusher (31) and the rear end is pushed by the rear pusher (32) by the push and tilt unit (26) having the rear pusher (32) and the rear pusher (32). While holding the plate (1), tilt both end plates (1) upward and inwardly tilt the tape (T) from the front end plate (1) to the outer flap (8) by the taping unit (27). A trapezoidal packaging box sealing device that sticks up to the rear end plate (1) through the abutting section.

Images