JP3004995U - Paper pallet and paper pallet manufacturing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a paper pallet having improved strength against load and a manufacturing apparatus thereof. [Arrangement] A paper pallet is constituted by a laminated body 3a formed by laminating a large number of corrugated cardboards having the same shape in a plane direction. The corrugated sheets of the central paper of the corrugated cardboard forming the laminated body 3a are laminated so that the continuous direction of the waves is the same as the load direction of the article placed on the placing surface of the paper pallet. Since the load on the laminated body 3a is applied in the continuous direction of the crests of the center paper of the corrugated board, the strength is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper pallet used to convey articles and a manufacturing apparatus for the same.

[0002]

[Prior art]

 Currently, pallets are used as a platform for placing articles when they are transported by forklifts and the like. Traditionally, pallets were often manufactured from wood or plywood, but in recent years, wood has been acquired due to the ever-decreasing amount of wood resources and the importance of environmental protection worldwide. It is getting harder and harder to do. For this reason, wood is being replaced by paper as the material for pallets.

1 to 3 show an example of such a paper pallet. The paper pallet 1 is mainly configured by laminating a large number of cardboards 11. A support leg 12 formed by bending a cardboard is bonded to the bottom surface of the cardboard 11 with an adhesive.

[0004]

[Problems to be solved by the device]

 However, the work of laminating a large number of corrugated boards 11 or forming the support legs 12 by bending the corrugated board and adhering it to the bottom surface of a large number of corrugated boards is very time-consuming and low in productivity. It was a thing.

Further, as shown in FIG. 3, when a load is applied to the paper pallet 1 in the arrow direction (direction perpendicular to the surface of the corrugated board 11), the corrugated board 11 is indicated by a chain double-dashed line. It will be bent and deformed into a wavy shape. If the corrugated board 11 has even a slight crease, stress is concentrated on that portion and the corrugated board 11 may break.

In order to improve the above-mentioned drawbacks, a curing agent is added to the corrugated board 11 or the number of layers of the corrugated board 11 is increased. It was difficult to completely prevent the curved deformation of the. For this reason, only lightweight articles can be placed on the paper pallet 1.

The present invention has been made under such circumstances, and an object thereof is to provide a paper pallet that has a large strength against a load and on which a heavy load can be placed. Another object is to provide a paper pallet that can be used as a material for corrugated cardboard that has creases. A further object of the present invention is to provide a paper pallet manufacturing apparatus for manufacturing the paper pallet.

[0008]

[Means for Solving the Problems]

 The paper pallet of the present invention is formed by a laminated body formed by stacking a plurality of corrugated cardboards cut into the same shape in the plane direction, and the laminated body serves as a placing surface on which articles are placed. It has a supporting part that transfers the load to the floor, and is laminated so that the continuous direction of the corrugations of the center paper of the corrugated cardboard of the laminated body is the same as the load direction of the article placed on the placing surface. It is characterized by

[0009] Two laminated bodies are laminated such that the corrugation peaks of the central paper of each corrugated board are the same, and the longitudinal directions of the corrugated board of adjacent laminated bodies intersect each other. It is preferable to use the above laminated body because the strength against load is improved.

It is preferable to bond a reinforcing plate to at least one of the upper surface and the lower surface of the laminated body because deformation with respect to a load is prevented and strength against a load is improved. The reinforcing plate can be made of paperboard, synthetic resin, metal, or any other material.

The paper pallet manufacturing apparatus of the present invention is for manufacturing the above-mentioned paper pallet, and has an adhesive applying means, a cutting means, and a holding means. The adhesive is applied to the surface of the tool, and the cutting means is equipped with a cutting blade that cuts the cardboard into the same shape, and presses the cardboard placed on the cutting blade to cut the cardboard. The holding means stacks and holds the corrugated board cut by the cutting means, and the corrugated board coated with the adhesive by the adhesive applying means is pressed by the cutting means to be cut and held. It is characterized in that it is pressed against the corrugated cardboard held by the means and laminated and bonded.

Further, the cutting means is provided with a pressing portion for pressing the corrugated board against the cutting blade, and the pressing portion is provided so that the distance between it and the cutting blade can be adjusted. This is preferable because the distance can be adjusted according to the corrugated board.

[0013]

[Action]

 Since the paper pallet of the present invention is configured such that the continuous direction of the wave peaks of the center paper of the corrugated board forming the stack is the same as the load direction of the article placed on the placement surface, Strength is improved.

[0014] Two laminated bodies are laminated such that the corrugation peaks of the center paper of each corrugated board are the same and the longitudinal directions of the corrugated board of adjacent laminated bodies intersect each other. In the case of being composed of the above laminated body, the respective laminated bodies can reinforce each other in the directions in which they are likely to be deformed by stress, so that the strength can be further improved.

When the reinforcing plate is bonded to at least one of the upper surface and the lower surface of the laminated body, the laminated body and the reinforcing plate are firmly adhered and fixed to each other, so that the deformation against the load is prevented and the strength against the load is improved. .

According to the paper pallet manufacturing apparatus of the present invention, the corrugated board coated with the adhesive by the adhesive coating means is pressed by the cutting means and cut, and is laminated on the corrugated board held by the holding means. To be glued.

When the pressurizing portion of the cutting means is provided so that the distance between it and the cutting blade can be adjusted, the distance is adjusted according to the corrugated board to be cut, and the optimum condition is adjusted. You can cut with.

[0018]

【Example】

 FIG. 4 and FIG. 5 are exploded perspective views showing an embodiment of the paper pallet manufacturing apparatus of the present invention, a part of which is cut away. A is a molding device that constitutes a part of the paper pallet manufacturing device, and is configured as follows.

The flat plate 2 has through holes 21 corresponding to the cross-sectional shape of the paper pallet. A cutting blade 22 is provided at the peripheral edge of the through hole 21 so that the blade edge faces upward. An elastic member 23 is bonded to the flat plate 2 around the outer periphery of the cutting blade 22. The elastic member 23 is provided such that its upper surface position with respect to the upper surface of the flat plate 2 is slightly higher than the cutting edge of the cutting blade 22.

The flat plate 2 of FIG. 4 is provided with three through holes 21 provided with a cutting blade 22 and an elastic member 23 in the peripheral portion, but one is shown only by the outline. Further, in FIG. 5, all three are shown by outlines.

A positioning portion 24 is provided on the bottom surface of the flat plate 2 so as to project downward. Below the flat plate 2, a box body 4 whose upper and lower surfaces are opened is provided. By fitting the positioning portion 24 of the flat plate 2 on the upper end of the side wall of the box body 4, the flat plate 2 is moved to the box body 4. It is positioned and fixed on the upper surface of the.

A base 5 is provided on the lower surface of the box body 4. Convex rims 51 are erected upwardly around the four sides of the base 5, and the lower end of the side wall of the box 4 is fitted and positioned and fixed inside the convex rims 51. .

Further, inside the box body 4, there is provided a guide member 52 for guiding the corrugated cardboard (shown by a chain double-dashed line in the figure) cut by a cutting blade 22 into a shape corresponding to the through hole 21 downward. It is erected so as to connect the through holes 21 of the flat plate 2 from the upper surface of 5.

FIG. 6 is a block diagram showing an embodiment of the paper pallet manufacturing apparatus of the present invention. B is a cutting machine that constitutes a part of the paper pallet manufacturing apparatus, and is configured as follows.

The machine base 61 is provided with a transmission motor 62 and a transportation roller 63 that is rotationally driven by transmitting its rotational force. Further, transport devices 64a and 64b each including an appropriate number of small rollers 641 are connected to the front and rear (right and left in the drawing) of the machine base 61. The lengths of the transportation devices 64a and 64b may be arbitrarily set if necessary.

A base 65 is provided above the machine base 61, and an adjusting base 651 is provided inside the base 65 so that the height of the adjusting base 651 can be adjusted. A pressure roller 66 forming a pressure unit is provided at a position corresponding to 63.

C is an adhesive application device (adhesive application means) that constitutes a part of the paper pallet manufacturing apparatus, and is configured as follows. When the adhesive is introduced from the feed port 71, it is fed downward by a pair of rollers 72 and 73 which rotate in opposite directions, and is conveyed downward by a roller 74 which rotates in the arrow direction. It is applied to the upper surface of the corrugated board 3. Since such an adhesive application device C is well known, detailed description thereof will be omitted.

Next, referring to FIG. 6, the cutting / bonding operation of the corrugated board will be described. First, the corrugated cardboard 3 to be cut is placed on the upper surface of the single molding apparatus A. In this state, when the molding apparatus A is pushed in from the transportation apparatus 64a in the direction of the arrow (rightward on the paper surface), the adhesive is applied by the adhesive application apparatus C to the upper surface of the placed corrugated cardboard 3.

Subsequently, the molding apparatus A enters the inside of the base 65 along the small rollers 641 of the transportation apparatus 64a. Here, the transmission motor 62 is activated to rotate the transportation roller 63 in the direction of the arrow, and the base 5 of the molding apparatus A is further advanced. As a result, the pressure roller 66 follows the movement of the corrugated board 3 and rotates in the direction of the arrow, and presses the corrugated board 3 placed on the molding apparatus A downward. As a result, the corrugated board 3 is cut into a predetermined shape by the cutting blade 22. That is, a cutting means for pressing the corrugated board 3 into the same shape by pressing the cutting blade 22 and the pressure roller 66 is configured.

Each time the series of operations described above is repeated, the corrugated cardboards 3 cut into the same shape are laminated one after another, but the adhesive is applied in advance by the adhesive applicator C to the upper surface of each corrugated cardboard 3. Therefore, the cut cardboards 3 are adhered to each other and laminated. Further, at this time, since the corrugated cardboard other than the one cut into the predetermined shape remains on the upper surface of the flat plate 2, it can be removed manually or by a known excluding means having an air suction plate. The molding apparatus A shown in FIG. 6 has two through holes 21.

As described above, the pressure roller 66 is supported by the adjusting base 651 which is provided on the base 65 so as to be adjustable in height. Therefore, the distance between the cutting blade 22 and the pressure roller 66 can be arbitrarily adjusted according to the thickness of the corrugated board 3 to be cut, and the pressing force applied to the corrugated board 3 at the time of cutting can be arbitrarily adjusted. The distance and the pressing force can be adjusted to be optimum for the cutting operation.

As shown in FIGS. 7A to 7D, the cut corrugated corrugated cardboards 3 a are sequentially stacked one by one, guided by the guide member 52, and stacked from top to bottom. Retained.

That is, the guide member 52 constitutes a holding means for stacking and holding the formed corrugated board 3a cut by the cutting means.

When the molded corrugated board 3a reaches the upper surface of the base 5 (FIG. 7 (D)), the molded corrugated ball 3a has a predetermined length. Therefore, the molded corrugated board 3a is taken out from the box body 4, and the cutting / bonding work is performed. Is completed.

Next, as shown in FIG. 8, the formed corrugated cardboards 3a (laminated body) are placed upright, and a paperboard 3b which is a reinforcing plate is bonded to the upper surface thereof. As a result, the paper pallet D1 is completed as shown in FIG. By adhering the paperboards 3b, it is possible to prevent the stacked individual molded cardboards 3a from being deformed when subjected to a stress in a direction parallel to the paper surface, and firmly bond and fix the individual molded cardboards 3a to each other. can do.

As shown in FIG. 8, when the paper pallet D1 is placed upright, the continuous direction of the wave peaks of the central paper of the forming corrugated ball 3a is the upper surface of the paper pallet D1. It is configured so that the weight of the article placed on the (mounting surface) is applied (vertical direction). Due to its structure, corrugated board is relatively weak against the load in the direction perpendicular to the plane, but very strong against the load in the continuous direction of the corrugations of the center paper of the corrugated ball. Therefore, the paper pallet D1 of the present embodiment is less likely to be curved and deformed even when a heavier weight article is placed as compared with the conventional one.

Further, as shown in FIG. 10, a paperboard 3c may be adhered to the lower surface side of the paper pallet D1 in FIG. 9 to form a paper pallet D2 having upper and lower paperboards 3b and 3c. In that case, the molded cardboard 3a can be bonded and fixed more firmly than the paper pallet D1 shown in FIGS. 8 and 9, and when the molded cardboard 3a is lifted from the bottom by a forklift or the like, the molded cardboard 3a is crushed. There is also an advantage that it can be prevented.

As the reinforcing plate, in addition to the paperboards 3b and 3c, materials other than paper such as synthetic resin and metal may be used.

11 and 12 show another embodiment of the paper pallet of the present invention. In this embodiment, another molded corrugated board 3d (laminated body) molded in a flat plate shape is stacked and adhered on the upper surface of the molded corrugated board 3a (laminated body) produced in the same manner as in the above-mentioned embodiment, and further, on the upper surface thereof. A paper pallet D3 is formed by adhering the paperboard 3b.

In the molded corrugated board 3d, the shape and arrangement of the through hole 21 and the cutting blade 22 shown in FIG. 4 are set so as to be a long quadrangle, that is, the laminated body constituted by the molded corrugated board 3d has a flat plate shape. Can be made by

Further, as shown in FIG. 9, when the longitudinal directions of the corrugated cardboard forming the molded corrugated board 3a and the longitudinal direction of the corrugated board forming the molded corrugated board 3d are laminated so as to intersect, the molded corrugated board 3a and Since the 3d can reinforce each other in the directions in which they are easily deformed by stress, the strength can be further improved.

In the paper pallet D1 shown in FIG. 9, a corrugated cardboard (laminate) similar to that is formed on the corrugated cardboard 3d (laminate), and a corrugated crest of the center paper of each corrugated cardboard is formed. For the same reason as above, it is preferable to stack the corrugated paperboards of adjacent laminates so that the continuous directions are the same and the longitudinal directions of the corrugated paperboards intersect, because the strength can be further improved.

Further, the outer circumference (cut surface) of the step ball 3 cut by the cutting means (the cutting blade 22 and the pressure roller 66) is aligned. Therefore, it has excellent adhesiveness when it is bonded to the paperboards 3b and 3c, or when two or more laminates are stacked and bonded, and is formed by the mounting surface formed by the paperboard 3b and the paperboard 3c. There is an advantage that the flatness of the supporting surface is good.

In the paper pallets D1 to D3 of the above-described embodiment, the supporting portion corresponding to the supporting leg for transmitting the weight to the floor surface is provided on the lower surface in a protruding manner. The shape is not limited, and may be a flat surface, for example. In that case, a through hole that can be supported by the fork of the forklift may be provided on the side surface of the paper pallet.

As described above, according to the paper pallet of the present embodiment, firstly, the weight of the article placed on the placement surface of the paper pallet is determined by the direction of the wave crests of the central paper of the corrugated board. Since it is subjected to a load, it has a high strength against a load and is less likely to be bent and deformed. Second, since the corrugated board is stacked and the load is applied in the continuous direction of the wave peaks of the corrugated board, even if the corrugated board that composes the paper pallet has creases or breaks, it can be bent and deformed. Absent. Therefore, scrap corrugated cardboard can be used as a material for the paper pallet. Therefore, the resources can be effectively used.

Further, according to the paper pallet manufacturing apparatus of the present embodiment, the operations of adhesive coating, cutting, and stacking of corrugated cardboard are performed without manpower, so the productivity is improved compared to the conventional case.

[0047]

[Effect of device]

 As described in detail above, according to the paper pallet of the present invention, since the strength against the load of the placed article is large, it is possible to place a heavier article than the conventional article. Further, even if the corrugated board has a crease or breakage, it can be bent and deformed. Therefore, it is possible to use the waste corrugated board as a material for the paper pallet. Further, according to the paper pallet manufacturing apparatus of the present invention, it is possible to efficiently manufacture the above-mentioned paper pallet without manpower.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a conventional paper pallet.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an explanatory diagram illustrating a usage state of a conventional paper pallet.

FIG. 4 is a partially broken perspective view showing an embodiment of the paper pallet manufacturing apparatus of the present invention.

FIG. 5 is an exploded perspective view of FIG.

FIG. 6 is an overall configuration diagram showing an embodiment of a paper pallet manufacturing apparatus.

FIG. 7 is an explanatory diagram illustrating a stage of manufacturing a paper pallet.

FIG. 8 is an exploded perspective view showing an embodiment of the paper pallet of the present invention.

FIG. 9 is an explanatory diagram illustrating a usage state of the embodiment.

FIG. 10 is an explanatory diagram illustrating a usage state of another embodiment.

FIG. 11 is an exploded perspective view showing another embodiment.

FIG. 12 is a side view of another embodiment.

[Explanation of symbols]

 D1, D2, D3 Paper pallet 3 Corrugated board 3a, 3d Molded corrugated board (laminate) 3b, 3c Paperboard (reinforcing plate) C Adhesive applying device (adhesive applying means) 52 Guide member (holding means) 22 Cutting blade 66 Add Pressure roller (pressurizing section)

Claims (5)

[Scope of utility model registration request] 1. A paper pallet formed by a laminated body formed by laminating a plurality of corrugated cardboards cut into the same shape in a plane direction, wherein the laminated body has a placing surface on which articles are placed, And a support portion for transmitting a load to the floor surface, and stacked so that the continuous direction of the wave peaks of the center paper of the corrugated cardboard of the laminate is the same as the load direction of the article placed on the placing surface. The paper pallet is characterized by: 2. The laminated body is laminated in such a manner that the corrugation peaks of the central paper of each corrugated board are the same in the continuous direction and the longitudinal directions of the corrugated board of the laminated bodies adjacent to each other intersect. The paper pallet according to claim 1, wherein the pallet comprises one or more laminates. 3. The paper pallet according to claim 1, wherein a reinforcing plate is bonded to at least one of the upper surface and the lower surface of the laminated body. 4. The paper pallet manufacturing apparatus according to claim 1, claim 2, or claim 3, which has an adhesive applying means, a cutting means, and a holding means. Is for applying an adhesive to the surface of a corrugated board, and the cutting means includes a cutting blade for cutting the corrugated board into the same shape, and pressing the corrugated board placed on the cutting blade for cutting. The holding means is for stacking and holding the corrugated board cut by the cutting means, and the corrugated board coated with an adhesive on the surface by the adhesive applying means is pressed by the cutting means. An apparatus for manufacturing a paper pallet, characterized in that the paper pallet is cut and is laminated and adhered by being pressed by the cardboard held by the holding means. 5. The cutting means comprises a pressing portion for pressing the corrugated board against the cutting blade, and the pressing portion is provided so that the distance between it and the cutting blade is adjustable. 5. The paper pallet manufacturing apparatus according to claim 4.