JP3897761B2 - Pushing member used for lid box making equipment - Google Patents

Description

The present invention relates to a pushing member used in a box making apparatus for a packaging box lid for closing an upper end opening of a box body having a shallow bottom so that an upper portion of a product to be accommodated is exposed.

  2. Description of the Related Art Conventionally, when a gift product is stored and displayed and transported, a packaging box including a box main body with an upper end opening and a lid with a lower end opening separate from the box main body is used. In order to make it easier for the purchaser to check the product when the packaging box is displayed with the lid open and housed in the box body, the peripheral wall of the box body is made lower than the total height of the product, and the top of the product Is exposed from the box body.

  When such a packaging box is used and stacked in a covered state, or when another object is placed on the upper part during transportation, the load is directly applied to the product. For this reason, conventionally, a ceiling pad (spacer) for forming a predetermined gap between the top wall of the lid and the upper end of the peripheral wall of the box body has been disposed inside the lid.

  However, this configuration requires three members, that is, a box body, a lid, and a top pad, so that there is a problem that an assembling workability and a space for storing these blanks are widened. Therefore, it is desired to integrally provide a structure that forms a predetermined gap between the lid and the upper end of the box body.

  Prior art document information relating to the lid of the packaging box of the present invention includes the following.

Japanese Utility Model Publication No. 63-13153

  In the lid of Patent Document 1, the side wall formed around the top wall is constituted by a double wall, and the locking step is provided on the inner surface located inside the adjacent side wall. And when assembling this lid, the locking step is stuck to the outer surface located outside the adjacent side wall so that the locking step is bridged diagonally between the adjacent side walls. It is set as the structure located in. Therefore, when the box body is closed by the lid, the top of the lid can be prevented from coming into contact with the product by the locking stepped portion being locked to the upper end of the box body.

  However, the lid of the packaging box is locked at the corner with the outer surface constituting the adjacent side wall adhered by the glue margin provided on one side and the inner side surface of each side wall folded inward. Since it is necessary to stick the step portion to the adjacent side wall, the assembling operation is very complicated. Therefore, when performing automatic assembly by a machine, there is a problem that the mechanism becomes very complicated and the cost becomes high. In addition, there is a possibility that automatic assembly by a machine may not be possible. In this case, since it must be assembled manually, it is very troublesome.

Accordingly, an object of the present invention is to provide a pressing member that can be automatically assembled by a machine and that is used in a box making device for a lid of a packaging box that does not directly apply a load to a product accommodated therein. Is.

In order to solve the above-mentioned problems, the pushing member used in the packaging box lid making apparatus of the present invention comprises a plurality of guides located on the outer side of the top wall, and is immersed in a space surrounded by these guides. In the pushing member of the box making apparatus for box-making a blank of the lid disposed on the guide and sending it downward, the lid has a glue margin at one lower part of the adjacent side wall, and A locking step portion that is continuous with these side walls is provided on the upper portion, and the locking step portion is adjacent to the other side wall by folding the locking step portion inward and sticking the adhesive margin portion to the other adjacent side wall. It is made to protrude inward from the ridge part of a side wall, The said pushing member has a lower end surface substantially the same shape as the said top wall, The recessed part into which the said locking step part is inserted in the lower end corner part And at least one side of the top wall in the recess The pressing piece extending along the boundary between the provided and pressing flaked, to the corner portion of the top wall is configured so as to form a short dimension that does not lead.

The box making device for automatically assembling the lid is different from the box making device for assembling the lid that is not provided with the locking step part by changing only the pushing member inserted between the plurality of guides. Is possible. The pushing member needs to be provided with a recess into which the locking step is inserted at the lower end corner. And when the pushing member provided with this recess is immersed between the guides together with the lid blank, the force concentrates on the end of the recess and a crease occurs on the top wall between the ends. In the present invention, since the pressing piece extending along the boundary portion between the top wall and the side wall is provided in the recess, the occurrence of the problem can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a packaging box to which a lid 10 to be assembled by a box making apparatus to which a pushing member according to an embodiment of the present invention is applied is applied. First, the lid 10 of this packaging box closes the upper end opening of the box body 2 from which the upper part of the product 1 is exposed, and is provided with a locking step 16 integrally on the upper end of the ridge located at the corner. It is.

  Specifically, the box body 2 is provided with a peripheral wall 4 surrounding four sides on each outer peripheral edge of a rectangular bottom wall 3. The peripheral wall 4 is composed of a double wall composed of an outer surface 4a that is continuous with the bottom wall 3 and an inner surface 4b that is continuous with the outer surface 4a and is folded back inward. Moreover, this surrounding wall 4 is set to height T2 lower than the total height T1 of the goods 1 accommodated in an inside.

  As shown in FIG. 3A, the lid 10 of the present embodiment is formed by punching corrugated paper as a continuous blank with a known paper punching device (not shown). The corrugated paper is a corrugated paper provided with a wavy shin between a pair of front and back sheets.

  The blank of the lid 10 includes a top wall 11 having the same shape as that of the box body 2, and side walls 12A, 12B, 12C, and 12D are continuously provided on the outer peripheral edges of the top wall 11, respectively. A folding line 13 is formed at the boundary between the top wall 11 and the side walls 12A to 12D by forming a ruled line from the cover side of the corrugated cardboard located on the outer surface side in the assembled state.

  Among the side walls 12A to 12D, the side walls 12B and 12D positioned up and down in FIG. 3 are provided with adhesive margins 14 for adhering to the adjacent side walls 12A and 12C. A similar folding line 15 is provided.

Further, a locking step 16 that locks to the upper end of the peripheral wall 4 of the box body 2 protrudes from the ridges of the adjacent side walls 12 </ b> A to 12 </ b> D. The locking step 16 is positioned above the glue margin 14 in the assembled state, and is provided in a square shape so as to be continuous with the corners of the adjacent side walls 12A to 12D. Fold line 17 is provided at the boundary portion between the engaging step portion 16 and each side wall 12A-12D. The folding line 17 and the folding line 15 of the glue margin 14 are located on a straight line through a cutting part 20 described later. Further, the latching step portion 16 is provided with a folding line 18 in the same manner as described above from the corner portion where the adjacent side walls 12A to 12D intersect to the diagonal direction.

  In the present embodiment, in the assembled state shown in FIGS. 1B and 2, the glue margin 14 has a height T <b> 3 extending upward from the lower ends of the side walls 12 </ b> A to 12 </ b> D so that the height of the peripheral wall 4 of the box body 2 is high. The dimensions are slightly lower than T2. Therefore, as shown in FIG. 3 (B), the margin part 14 and the locking step part 16 are formed without a gap through a cutting line 19. The cutting line 19 is provided with a non-cutting part 19a in a part thereof, and the glue margin part 14 and the locking step part 16 are configured to be continuous through the non-cutting part 19a. This prevents the margin part 14 from floating together with the punching die when punched by the paper device punching device.

  In addition, an arcuate cutting portion 20 is provided at the intersection (ridge) between the edge of the locking step 16 and the side walls 12A to 12D, and the side walls 12A to 12B are bent by folding the locking step 16 during assembly. 12D breakage is prevented. In addition, the intersection position of the side walls 12B and 12D provided with the adhesive margin 14 and the edge of the locking step portion 16 is an intersection position of the cutting line 19 and the folding line 17. Therefore, in this portion, the cutting line 19 and the cutting part 20 are continuous and have a substantially J shape.

  Further, a circular cut-off portion 21 is provided at a corner portion where the top wall 11, the adjacent side walls 12 </ b> A to 12 </ b> D and the locking step 16 intersect, and the side walls 12 </ b> A to 12 </ b> D with respect to the top wall 11, and The repulsive force accompanying bending of the latching step part 16 with respect to each side wall 12A-12D is reduced.

  The blank of the lid 10 punched out in such a shape bends the side walls 12A to 12D with respect to the top wall 11 while guiding the center of the locking step portion 16 inward, and at the side walls 12B and 12D. On the other hand, it is assembled by bending the margin part 14 and adhering the margin part 14 and the adjacent side walls 12A, 12C with a known adhesive such as hot melt.

  Here, the conventional lid assembling method without the locking step portion 16 is different only in that the center of the locking step portion 16 is not guided inward. That is, in the lid 10 of the present invention, only a mechanism or a structure for guiding (pressing) the locking portion inwardly needs to be added to the conventional box making apparatus for the lid without the locking step portion 16. Therefore, automatic assembly by a machine can be surely performed, the improvement and production of the apparatus are relatively easy, and the cost increase can be suppressed. Further, in the present embodiment, since all the folding curves are formed with a ruled line from the cover side, in particular, the operation of folding the locking step 16 inward can be easily and reliably performed. In other words, in the present embodiment, the inward guidance of the locking step portion 16 is constituted by a blank structure composed of a so-called reverse ruled line in which the folding lines 17 and 18 are ruled from the cover side.

  As shown in FIGS. 1 (A), 1 (B) and 2, the lid 10 assembled in this way has the locking step 16 folded in two, and from the upper corners of the adjacent side walls 12A-12D. It will be in the state protruded inward so that it may incline at a predetermined angle and may make a substantially triangular shape. Therefore, the locking step 16 is inclined by about 45 degrees from the ridge so that it is located just in the middle of the adjacent side walls 12A to 12D by a repulsive force caused by bending the adjacent side walls 12A to 12D. Projects at an angle.

  Therefore, when the box body 2 containing the product 1 is closed by the lid 10, the substantially horizontal lower end of the locking step 16 is the peripheral wall 4 of the box body 2 as shown in FIGS. Lock to the top of the. As a result, the top wall 11 of the lid 10 is held in a state of floating upward from the upper end of the peripheral wall 4 of the box body 2 at a predetermined interval. That is, the top wall 11 of the lid is not placed on the product 1 accommodated in the box body 2. Therefore, even if the packaging boxes to which the lid 10 is applied are stacked or another light object is placed on the upper part during transportation, the load is not directly applied to the product 1.

Next, the box making apparatus of the present invention for automatically assembling the lid 10 will be specifically described.

  As shown in FIGS. 4 and 5, the box making apparatus includes a hopper (not shown) in which blanks of a plurality of lids 10 are arranged, a transport mechanism 30 that takes out and transports blanks one by one from the hopper, It comprises an assembly mechanism 36 that folds and assembles a blank supplied from the transport mechanism 30 into a predetermined shape, and an unloading mechanism 53 that unloads the lid 10 sent from the assembly mechanism 36. In this embodiment, the inward guidance of the locking step portion 16 in the blank is configured by the above-described blank structure and the improvement of the pushing member 39 constituting the assembly mechanism 36.

  Specifically, the hopper stacks blanks of a plurality of lids 10 with the back surface as an upper side, and a transport mechanism 30 described later in the lateral direction in FIG. To supply.

  The transport mechanism 30 is provided with a pair of guide rails 32 on both sides of a conveyor 31. The conveyor 31 is provided with a take-out mechanism (not shown) for taking out one blank from the hopper every predetermined time at the base end (hopper side) and at the tip (assembly mechanism 36 side). An adhesive application mechanism 33 for applying an adhesive is provided at a predetermined position of the blank. The adhesive application mechanism 33 includes a detection arm 34 that can swing up and down to detect the tip position of the conveyed blank, and an application unit 35 that is positioned at both ends of the side walls 12A and 12C. An adhesive is supplied to the application unit 35 from a hot melt applicator (not shown) through a connecting pipe at a predetermined timing.

  The assembly mechanism 36 includes a plurality of guides 37A, 37B, and 37C that are located outside the top wall 11, a pushing member 39 that is immersed in a space surrounded by the guides 37A to 37C, and the pushing member 39. It consists of an elevating mechanism 44 that moves up and down.

  The guide 37A is positioned at the four corners of the top wall 11, and at its upper end, the margin portions 14 and the locking step portions 16 are formed along the folding lines 15 and 17 toward the side walls 12B and 12D. A bending portion for bending is provided. The guide 37B is positioned in the front-rear direction in the blank conveyance direction, and has a curved portion for bending the side walls 12A and 12C inwardly toward the top wall 11 along the folding line 13 at the upper end thereof. is there. The guide 37C is located on the left and right in the blank conveying direction, and has a curved portion for bending the side walls 12B and 12D along the folding line 13 toward the top wall 11 at the upper end. is there. The curved portions of the guides 37A to 37C have a larger curvature in the order of the guide 37A, the guide 37B, and the guide 37C, the adhesive margin portion 14 bends in a direction orthogonal to the side walls 12B and 12D, and then the side wall 12A. 12C bend in a direction orthogonal to the top wall 11, and finally, the side walls 12B and 12D bend in a direction orthogonal to the top wall 11. The guide 37A positioned at the front end in the transport direction by the transport mechanism 30 is provided with a stopper portion 38 that stops the blank at a predetermined position when the glue margin portion 14 comes into contact therewith.

  The pushing member 39 is inserted into the space surrounded by the guides 37A to 37C together with the blank of the lid 10 arranged on the guides 37A to 37C, thereby making the blank into a predetermined shape with one action. The block body is a bent body having a lower end opening having a lower end surface substantially the same shape as the top wall 11. On the upper end surface of the pushing member 39, an air vent hole 40 is provided at a predetermined position, and a screw shaft portion 41 is attached to be attached to an elevating mechanism 44 described later.

The pushing member 39 of the present embodiment is provided with a recess 42 for inserting the locking step 16 projecting inwardly at the lower end corner. In the recess 42, there is disposed a pressing member 43 including a base 43a for fixing by screwing and a pressing piece 43b protruding from a lower end on one side of the base 43a. The pressing piece 43b is arranged flush with the side surface of the pressing member 39, and is configured to extend toward the corner along the boundary portion between the side walls 12B and 12D on the top wall 11 of the blank. ing. In the present embodiment, the pressing piece 43 b is formed with a slightly short dimension that does not reach the corner of the top wall 11 .

  The elevating mechanism 44 includes an elevating member 47 attached to a support column 45 so as to be movable up and down along a rail 46 extending in the vertical direction, and a drive mechanism for supporting the elevating member 47 to move up and down. The elevating member 47 includes an arm 48 projecting from the rail 46, a shaft 49 positioned in the center of the guides 37A to 37C and extending vertically, and a mounting plate 50 disposed at the lower end of the shaft 49. The pushing member 39 is fixed to the mounting plate 50. The drive mechanism includes, for example, a crank arm 51 that is rotatably disposed on the support column 45, and a rod 52 that connects a distal end portion of the crank arm 51 and the lifting platform. Note that this drive mechanism can also be constituted by a cylinder.

  The carry-out mechanism 53 includes a belt conveyor having one end disposed below the guides 37A to 37C.

  In the box making apparatus configured as described above, the blank of the lid 10 stacked on the hopper is transported by the transport mechanism 30 and is bonded to a position corresponding to the adhesive margin 14 on the side walls 12A and 12C of the blank during the transport. The agent is applied and a blank is supplied to the assembly mechanism 36 in this state.

  In the assembly mechanism 36, the leading end of the blank comes into contact with the stopper portion 38 of the guide 37A, and is stopped at a predetermined position on the guides 37A to 37C. Thereafter, when the driving mechanism operates, the elevating member 47 is lowered. Thereby, the pushing member 39 attached to the lower end of the shaft 49 comes into contact with the top wall 11 of the blank, and the blank is pushed together into the guides 37A to 37C.

  If it does so, as shown in FIG. 7, it will bend in the orthogonal direction with respect to the adjacent wall in order of the glue margin part 14, side wall 12A, 12C, and side wall 12B, 12D. Here, the side walls 12B and 12D provided with the adhesive margin 14 are completely bent after the side walls 12A and 12C, but are gradually bent by the curved portion of the guide 37C in the previous stage. Therefore, the margin part 14 is located inside the side walls 12A and 12C, and is securely attached to predetermined positions on the side walls 12A and 12C.

  At this time, the locking step 16 provided continuously at the corners of the side walls 12A to 12D projects toward the inside of the recess 42 that is surrounded by the side walls 12A to 12D by the ruled line 18 having a ruled line from the surface side. . Moreover, in this recessed part 42, although the press piece 43b extended along the boundary part of the top wall 11 and side wall 12B, 12D exists, in this embodiment, the press piece 43b is extended to the corner part of the top wall 11. Since it is formed with a slightly short dimension that does not reach, the locking step portion 16 does not interfere and enter into the recess 42.

  Here, in the pushing member 39, when the concave portion 42 is provided in the corner portion of the top wall 11, the force concentrates on the end portion 42a of the concave portion 42 when being inserted between the guides 37 together with the blank. There is a possibility that a fold may occur in the top wall 11 between the ends. However, in this embodiment, since the pressing piece 43b is provided, the occurrence of the problem can be prevented.

  The lid 10 automatically assembled in this way passes through the lower ends of the guides 37A to 37C by the pushing of the pushing member 39, and is conveyed to the next step by the lower carry-out mechanism 53.

In addition, the pushing member used for the box making apparatus of the lid 10 of the packaging box of the present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made.

For example , in the said embodiment, although it comprised by providing a reverse ruled line in a blank as a structure which guides the latching step part 16 inward, while providing the normal ruled line which puts a ruled line from a back surface, a box making apparatus A mechanism for guiding the locking step 16 by pushing it upward (inward) may be added.

The state which closed the box body which stored goods with the lid assembled with the box making device using the pushing member of the present invention is shown, (A) is a top view and (B) is a sectional view. FIG. 2 is an exploded perspective view of FIG . 1 . (A) is a top view which shows the expansion | deployment state of a cover, (B) is the top view to which the principal part of (A) was expanded. It is the schematic which shows the box making apparatus using the pushing member of this invention which makes a box automatically. FIG. 5 is a partial plan view of FIG. 4. It is a perspective view which shows the pushing member of this embodiment. It is a fragmentary perspective view which shows one process of the assembly of the lid | cover by a pushing member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Product, 2 ... Box main body, 3 ... Bottom wall, 4 ... Perimeter wall, 10 ... Cover, 11 ... Top wall, 12A-12D ... Side wall, 14 ... Paste part, 16 ... Locking step part, T1 ... Product Total height, T2: height of peripheral wall, T3: height of glue margin, 37A to 37C ... guide, 39 ... pushing member, 42 ... recessed portion, 43 ... pressing member, 43b ... pressing piece, 44 ... lifting mechanism.

Claims (1)

Pushing of a box making apparatus comprising a plurality of guides positioned on the outer side of the top wall, and making a blank of the lid placed on the guide by boxing into a space surrounded by the guides and sending it downward In the member,
The lid includes a margin portion at one lower portion of adjacent side walls, and includes a locking step portion that is continuous with the side walls at an upper portion of the adjacent side wall, and the adhesive step portion is folded inward to form the glue. By sticking the proximate part to the other side wall adjacent, the locking stepped part protrudes inward from the ridge part of the adjacent side wall,
The pushing member has a lower end surface having substantially the same shape as the top wall, and includes a recess into which the locking step portion is inserted at a lower end corner, and the top wall and at least one side wall are provided in the recess. A pressing member for use in a lid box-making apparatus, characterized in that a pressing piece extending along a boundary portion is provided , and the pressing piece is formed with a short dimension that does not reach the corner of the top wall .

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