TWI393659B - Paper pallet - Google Patents

Description

Paper pallet

The invention relates to a technical field of paper pallets, in particular to a paper pallet which is simple and convenient to manufacture and has good structural strength.

Generally, the structure of a conventional paper pallet is mainly composed of a plurality of criss-crossing members, and the components constituting the paper pallet are usually formed by continuously bending a corrugated cardboard into a core portion and then bending around the core portion. The periphery of the core portion is covered, and the folding members and the cross members constituting the paper pallet are folded in different manners, as shown in Taiwan Patent No. 235284. However, since the core unit and the plate unit covering the periphery of the core portion have several widths, and the width of each of the plate units needs to take into account the thickness of other relative folded or covered portions, the production is increased. The trouble and production cost, and the design is very difficult. In particular, the plate unit covering the periphery of the core portion has a longitudinal direction and a lateral direction, so that the direction and position of the force-bearing force are different, and the initial crease or nick has a slight error or the force of the core portion is excessively pressed. When it is too small, it is easy to cause the plate unit covering the periphery of the core portion to be intimately attached to the outer side of the core portion, which may affect the structural strength. In addition, the creases and scores on the corrugated cardboard forming the conventional paper pallet are formed by sawing the mold halfway, and the components constituting the paper pallet are also a core portion covering a periphery. Therefore, the creases and nicks are only used for the convenience of bending, and they are generally V-shaped, so that each of the plate units utilizes the creases and the folds at the folds to be easily deformed at the folds. It will affect its structural strength.

Another conventional paper pallet structure, as shown in Taiwan Patent No. I279362, is mainly formed by folding two sides of a cardboard material into two layers in the middle, and then folding into four layers based on the center line of the cardboard. Then, the two layers of cardboard at the ends of the two sides are respectively folded back to a smaller length to form a thickened portion; or a cardboard material is first folded into two layers, and then the single-layer cardboard on both sides is folded in opposite directions. Four layers are then re-folded into a smaller length to form a thickened portion. However, when the two layers of paperboard at the ends of the two sides are again folded back into a small length to form a thickened portion, the bending deformation is severely deformed due to the thickness of the two layers, and Affects the overall structural shape and strength.

In view of the above, the present inventors have developed and designed the present invention in view of the many shortcomings and inconveniences caused by the conventional design of the paper pallet in the structural design.

The main object of the present invention is to provide a paper pallet which is simple and convenient to manufacture and has good structural strength.

Specifically, the paper pallet of the present invention is formed by relatively interlocking a plurality of beams in a crisscross manner. The beam is integrally folded and formed by a corrugated cardboard in a continuous positive and reverse bending manner, and has a supporting portion and two reinforcing portions which are located on both sides of the supporting portion and have a small height. The lower side of the corrugated cardboard is provided with a plurality of lower grooves spaced apart to provide a plurality of first folding units in the middle and a plurality of second folding units positioned on both sides. The upper side of each of the first folding units has an upper groove for separating the two first plate units, and each of the second folding units has an upper groove for separating the partitions. Two second plate units having a width smaller than the first plate unit. Wherein, the first folding unit is folded upwards such that the upper groove is located on the inner side surface and the end portion of the two first plate units is accommodated. The two adjacent first folding units are folded back downward so that the groove below the groove is located on the inner side surface and accommodates the end portions of the adjacent first plate units of the two first folding units. The plurality of first folding units are superposed to form the support portion. The second folding unit is folded upwardly so that the upper groove is located on the inner side surface and accommodates the ends of the two second plate units. The second folding unit and the adjacent first folding unit are folded back downward so that the groove is located on the inner side between the groove and the end of the second plate unit and the first plate unit. The second folding unit is superposed on one side of the support portion to form the reinforcing portion.

Thus, the beams constituting the paper pallet of the present invention are formed by cutting the appropriate spacing and size above and below the first groove of the corrugated cardboard, and then bending the continuous positive and negative grooves along the upper and lower grooves. In order to form a support portion and two reinforcing portions located on both sides of the support portion and having a small height. In particular, it has only two widths of the first plate unit and the second plate unit, so that it is relatively simple and convenient to manufacture and fast, and the conventional paper pallet can be improved by folding a plurality of plate units of different widths. The resulting structure is complicated and troublesome to produce. In addition, the upper and lower grooves between the plurality of first plate units and the plurality of second plate units are folded on the inner side by the special folding design of the present invention, and the first and second plate units are respectively accommodated therein. The structural design can greatly increase the overall structural strength, in particular, the situation that the bending deformation between the plate units can be prevented, so as to effectively improve the conventional paper pallet and the deformation of the bending portion. The problem of weakened strength. Furthermore, all of the first and second plate units constituting the beam of the present invention are upright, so that the bearing directions and positions of the plurality of first and second plate units are the same, and therefore can withstand a large weight.

In the present invention, the corrugated cardboard is composed of a wave layer and two panel layers bonded to the upper and lower sides of the wave layer. The width of the lower groove and the upper groove corresponds to twice the thickness of the corrugated cardboard. The depth of the lower groove is formed by removing the lower side panel layer and the wave layer. The depth of the upper groove is formed by removing the upper side panel layer and the wave layer.

Referring to the first to sixth figures, it is pointed out that the paper pallet of the present invention is formed by the plurality of beams 1 and 3 being vertically and horizontally interlaced, wherein each beam 1 and 3 are respectively made of one corrugated. The cardboard 2 is integrally folded in a continuous positive and reverse bending manner.

As can be seen in the first and second figures, the beams 1, 3 have a support portion 10 and two reinforcing portions 11 which are located on both sides of the support portion 10 and have a small height. The support portion 10 has a plurality of slots 12 therein. The groove 12 of the transverse beam 1 is engageable with the slot 12 of the longitudinal beam 3 such that the upper side of the transverse beam 1 is flush with the lower side of the longitudinal beam 3, and the transverse direction The lower side of the beam 1 is flush with the upper side of the longitudinal beam 3. The lower side of the support portion 10 of the transverse beam 1 has a plurality of slots 13 which are located between two adjacent longitudinal beams 3. The lower side of the support portion 10 of the longitudinal beam 3 and the reinforcing portion 11 are provided with a plurality of notches 13 which are located between the adjacent lateral beams 1 .

As can be seen in the third and fourth figures, the corrugated cardboard 2 is composed of a wave layer 20 and two panel layers 21 bonded to the upper and lower sides of the wave layer 20. The lower side of the corrugated cardboard 2 is provided with a plurality of lower grooves 22 spaced apart to separate the two first folding units 30 in the middle and the second folding units 40 on the two sides. In the present invention, the first folding unit 30 and the second folding unit 40 can be increased in number as needed to enhance the structural strength thereof.

The third figure is a developed view of the transverse beam 1 in which the upper side of each of the first folding units 30 has an upper groove 31 for partitioning the two first plate units 32 into equal parts, and Each of the first folding units 30 has a plurality of through holes 33 and a plurality of through holes 34 extending through the upper and lower sides, and the upper groove 31 of the first folding unit 30 passes through the plurality of through holes 33 from the center and the plurality Through hole 34.

The upper side of each of the second folding units 40 has an upper groove 41 for partitioning the two second plate units 42 which are equal in width, and the second plate unit 42 has a smaller width than the first plate unit 32.

In the present invention, the plurality of lower grooves 22 and the plurality of upper grooves 31, 41 on the corrugated cardboard 2 are formed by cutting, and the plurality of lower grooves 22 and the plurality of upper grooves 31, 41 are formed. The cutting direction is perpendicular to the wavy line of the wave layer 20. The width of the lower groove 22 and the upper grooves 31, 41 corresponds to twice the thickness of the corrugated cardboard 2. The depth of the lower groove 22 is obtained by removing the lower side panel layer 21 and the wave layer 20. The depth of the upper grooves 31 and 41 is obtained by removing the upper side panel layer 21 and the wave layer 20.

In addition, the plurality of lower grooves 22 and the plurality of upper grooves 31, 41 on the corrugated cardboard 2 may also be formed in a flattened manner, wherein the depth of the lower grooves 22 is the lower side panel layer 21 and the The wave layer 20 is flattened, and the depth of the upper grooves 31, 41 is formed by flattening the upper side panel layer 21 and the wave layer 20.

Further, the corrugated cardboard of the present invention may be composed of two wave layers and a three-layer layer (not shown) bonded between the upper and lower sides of the two wave layers. Wherein, the lower groove only leaves the upper panel layer, and the upper groove only leaves the side panel layer.

In the fourth to sixth figures, it is noted that the first folding unit 30 is folded upwardly so that the upper groove 31 is located on the inner side surface and is just for accommodating the opposite ends of the two first plate units 32. The two first folding units 30 are folded back downward so that the groove 22 is located on the inner side, and the opposite ends of the adjacent first plate units 32 of the two first folding units 30 are accommodated. As such, the two first folding units 30 are superposed to form the support portion 10 having the four first plate units 32. Moreover, the plurality of through holes 33 on the two first folding units 30 are formed on the support portion 10 to form the plurality of slots 12; the plurality of through holes 34 on the two first folding units 30 are at the support portion 10. The upper part is formed to form a plurality of missing slots 13 (please refer to the first to third figures).

The second folding unit 40 is folded upwardly so that the upper groove 41 is located on the inner side surface and is just for accommodating the opposite ends of the two second plate units 42. The second folding unit 40 and the adjacent first folding unit 30 are folded downwardly downward so that the groove 22 is located on the inner side, and is just for accommodating the adjacent second plate unit 42 and the first plate. The opposite ends of the unit 32, and thus the second folding unit 40 is superposed on one side of the support portion 10 to form the reinforcing portion 11 (please refer to the second figure).

In the present invention, when the corrugated cardboard 2 is folded, the adhesive 50 may be applied to all the opposing surfaces of the plurality of first plate units 32 and the plurality of second plate units 42 for folding. All of the first plate units 32 of the beam 1 are bonded to the second plate unit 42 to further increase the structural strength thereof.

Referring to the seventh figure, it is a developed view of the longitudinal beam 3, wherein the folding manner of the longitudinal beam 3 and the positions of the upper and lower grooves 31, 41, 22 and the position of the perforation 33 are associated with the transverse direction. The beam 1 is the same and will not be described again.

The transverse beam 1 differs from the longitudinal beam 3 only in the position of the through hole 34. The corrugated cardboard 2 constituting the longitudinal beam 3 has a plurality of through holes 34 extending through the upper and lower sides on the two adjacent first folding units 30, and the lower grooves 22 between the two first folding units 30 are The plurality of through holes 34 are passed through the center. The side edges of the second folding unit 40 on both sides respectively have opening-shaped notches 35 at the through holes 34, and the notches 35 extend to the adjacent second folding unit 30. After the plurality of first folding units 30 and the plurality of second folding units 40 are stacked, the plurality of through holes 34 and the plurality of notches 35 are formed at the relative positions of the supporting portion 10 and the reinforcing portion 11 to form the plurality of notches 13 , please cooperate Refer to the first and second figures.

Please refer to the eighth and ninth figures for another embodiment of the present invention. It is noted that the two reinforcing portions 11 of the beam 1 can also be formed on the same side of the supporting portion 10. The plurality of lower grooves 22 of the corrugated cardboard 2 are divided into two first folding units 30 on one side and two second folding units 40 on the other side.

In summary, since the present invention has the above advantages and practical value, and no identical or similar products or publications are found in the similar products, the present invention has met the novelty and progressive requirements of the invention patents, and is proposed according to law. Application.

1, 3. . . Beam

10. . . Support

11. . . Reinforcement department

12. . . Insert slot

13. . . Missing slot

2. . . Corrugated cardboard

20. . . Wave layer

twenty one. . . Panel layer

twenty two. . . Lower groove

30. . . First folding unit

31. . . Upper groove

32. . . First board unit

33. . . perforation

34. . . Through hole

35. . . gap

40. . . Second folding unit

41. . . Upper groove

42. . . Second board unit

50. . . Viscose

The first figure is a perspective exploded view of the present invention.

The second figure is a partial enlarged view of the first figure.

The third figure is a developed schematic view of the transverse beam of the present invention.

The fourth figure is a plan view of the front end face of the second figure.

The fifth figure is a schematic view of the folding action of the beam of the present invention.

The sixth figure is an enlarged schematic view of the end face of the beam of the present invention.

The seventh figure is a developed perspective view of the longitudinal beam of the present invention.

The eighth figure is a developed perspective view of a beam according to another embodiment of the present invention.

Figure 9 is an enlarged plan view showing the end face of a beam according to another embodiment of the present invention.

1. . . Beam

10. . . Support

11. . . Reinforcement department

2. . . Corrugated cardboard

20. . . Wave layer

twenty one. . . Panel layer

twenty two. . . Lower groove

30. . . First folding unit

31. . . Upper groove

32. . . First board unit

40. . . Second folding unit

41. . . Upper groove

42. . . Second board unit

50. . . Viscose

Claims (9)

The utility model relates to a paper pallet which is formed by a plurality of beams which are vertically and horizontally criss-crossed. The beam is integrally folded and folded by a corrugated cardboard in a continuous positive and negative bending manner, and has a support portion and is located on the support. Two reinforcing portions on both sides of the portion and having a small height; the lower side of the corrugated cardboard is provided with a plurality of lower grooves spaced apart to provide a plurality of first folding units in the middle and a plurality of second folding positions on both sides The upper side of each of the first folding units has an upper groove for separating the two first plate units, and each of the second folding units has an upper groove for separating the upper portion of the first folding unit. The second plate unit has a width smaller than that of the first plate unit; wherein the first folding unit is folded upwardly so that the upper groove is located on the inner side surface and accommodates the two first plates An end portion of the unit, the two adjacent first folding units are folded back downward so that the groove is located on the inner side and the end of the adjacent first plate unit of the two first folding units is accommodated, thereby The plurality of first folding units are superposed to form the support portion; the second The unit is folded upwardly so that the upper groove is located at the inner side and is adapted to receive the ends of the two second plate units, and the second folding unit and the adjacent first folding unit are folded downwardly to be separated therebetween. The lower groove is located on the inner side surface and accommodates the adjacent second plate unit and the end of the first plate unit, so that the second folding unit is superposed on one side of the support portion to form the reinforcing portion. The paper pallet as claimed in claim 1, wherein the corrugated cardboard is composed of a wave layer and two panel layers combined on the upper and lower sides of the wave layer, the lower groove and the upper groove. The width of the groove corresponds to twice the thickness of the corrugated cardboard, and the depth of the lower groove is formed by removing the lower side panel layer and the wave layer, and the depth of the upper groove is formed by removing the upper side panel layer and the wave layer. The paper pallet of claim 1 or 2, wherein each of the first folding units has a plurality of perforations extending through the upper and lower sides, and the upper groove on the first folding unit is from the center Through the plurality of perforations, after the plurality of first folding units are superposed, the plurality of perforations are tied to the supporting portion to form a plurality of cavities, and the cavities of the longitudinal beams are configured to engage with the cavities of the transverse beams. The paper pallet of claim 3, wherein the upper side of the longitudinal beam is flush with the lower side of the transverse beam, and the lower side of the longitudinal beam is attached to the upper side of the transverse beam. Qi Ping. The paper pallet of claim 3, wherein each of the first folding units of the corrugated cardboard constituting the transverse beam has a plurality of through holes penetrating the upper and lower sides, and the first folding unit is The upper groove passes through the plurality of through holes from the center, and after the plurality of first folding units are overlapped, the plurality of through holes are formed on the support portion to form a plurality of missing grooves, and the missing grooves on the lateral beams are in two phases Between the longitudinal beams of the adjacent. The paper pallet of claim 5, wherein all of the opposing surface of the plurality of first plate units and the plurality of second plate units are coated with a glue. The paper pallet of claim 5, wherein the two adjacent first folding units of the corrugated cardboard constituting the longitudinal beam have a plurality of through holes penetrating the upper and lower sides, the first two The lower groove between the folding units passes through the plurality of through holes from the center, and the second folding unit on the two sides respectively have an opening-shaped notch corresponding to the through hole, and the notch extends to the adjacent second folding In the unit, after the plurality of first folding units and the plurality of second folding units are overlapped, the plurality of through holes and the plurality of notches are formed at a relative position of the supporting portion and the reinforcing portion to form a plurality of missing grooves, and the longitudinal beam is missing The slots are between two adjacent transverse beams. The paper pallet according to claim 7, wherein the plurality of lower grooves and the plurality of upper grooves on the corrugated cardboard are formed by cutting. The paper pallet of claim 7, wherein the two reinforcing portions of the beam are also formed on the same side of the support portion, and the corrugated cardboard is separated by a plurality of lower grooves of the corrugated cardboard. The plurality of first folding units on one side and the second plurality of folding units on the other side are formed.