JP2000203576A - Box pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable goods or semi-manufactured goods in any temperature range to be accumulated, and enhance its durability by forming the bottom part of a box into a discontinuous surfaces in a top-opened box pallet for use in accumulation of various kinds of goods and semi-manufactured goods ejected from a manufacturing line. SOLUTION: The box pallet comprises a rectangular box being opened in its only upper part and closed in its bottom part and side plate part, and formed into a box by frame materials 1 and plate materials 2. The plate materials 2 are made up of rectangular unit plates of five surfaces by two sheets, and one surface by two sheets of the unit plate is put in contact with one surface surrounded by the bottom plate 11 of the frame materials 11 from the outside of a bottom frame 11. Also, the other four surfaces by two sheets of unit plates are brought in contact with the four surfaces surrounded by the side frames 12 of the frame materials 1 from the out side of side frames 12 respectively. The frame materials 1 and unit plates are fastened by clamps 5, bolt screw holes 3, 4 and clamps 5 constitute a frictional sliding structure, thereby damping impact noise produced between the goods and semi-manufactured goods and the frame materials 1 and unit plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field related to a box pallet which is installed in a middle part of a production line, a terminal, or the like, and accumulates various products and semi-finished products discharged from the production line.

[0002]

2. Description of the Related Art In general, products and semi-finished products are stacked on a box pallet in a configuration in which products and semi-finished products are directly dropped or rolled into the box pallet from directly above or obliquely above the box pallet. I have. Therefore, between the box pallet and the product or semi-finished product,
A collision sound is generated, which is a noise that degrades the working environment. Therefore, there is a demand for the development of a technology for attenuating the collision sound between a box pallet and a product or semi-finished product.

Conventionally, as a box pallet configured to reduce the collision sound, for example, those shown in FIGS. 10 and 11 are known.

[0004] The conventional box pallet shown in FIG. 10 is provided with a shaft C for winding a rubber sheet B into a roll at the upper edge of a box body A formed in a box shape having an open top. In this conventional box pallet, the rubber sheet B is hung from the side wall of the box body A to the bottom wall, and the product and the semi-finished product that fall into the box body A are received by the rubber sheet B, and the box body A and the product and the semi-finished product are received. The sound of the collision is attenuated by reducing the impact of the collision. When the rubber sheet B hung on the side wall and the bottom wall of the box body A is deteriorated or worn, the deteriorated or worn portion is cut off and a new rubber sheet B is fed.

[0005] The conventional box pallet shown in FIG. 11 is formed by attaching a viscoelastic body (damping material) D to an outer side surface of a side wall of a box body A formed in a box shape whose upper part is opened. In this conventional box pallet, the collision sound is attenuated by converting the vibration energy of the collision between the box body A and the product or semi-finished product into heat energy by the viscoelastic body D.

[0006]

In the conventional box pallet shown in FIG. 10, the rubber sheet B is deteriorated,
There is a problem that the crushed pieces of the rubber sheet B adhere to the accumulated products and semi-finished products because they are easily worn. In addition, since the rubber sheet B does not have heat resistance, when it is used for accumulating high-temperature products such as forged products having a temperature of 500 ° C. and semi-finished products, the rubber sheet B is greatly deteriorated and cannot withstand long-term use. There is a point.

Further, in the conventional box pallet shown in FIG. 11, the effective temperature range for energy conversion of the viscoelastic body D is narrow, so that the versatility for products and semi-finished products at various temperatures is low. There is a problem. In addition, since the viscoelastic body D is greatly deteriorated by a temperature change, there is a problem that the viscoelastic body D is peeled off from the box body A when used for a product or a semi-finished product with a sharp temperature change.

The present invention has been made in view of such problems, and provides a box pallet having a function of attenuating a collision sound, capable of integrating products and semi-finished products in any temperature range, and having high durability. The task is to

[0009]

Means for Solving the Problems In order to solve the above-mentioned problems, a box pallet according to the present invention employs the following means.

That is, in the first aspect of the present invention, in a box pallet formed at least in a box shape having an open upper portion, at least a bottom plate portion of the box shape is formed on a discontinuous surface.

In this means, the radiation surface vibrating due to the collision is discontinuously divided, and the collision sound is attenuated. The structure of the discontinuous surface makes it possible to freely select materials for heat resistance, abrasion resistance, etc., and contributes to improvement of durability.

According to a second aspect of the present invention, in the box pallet of the first aspect, the discontinuous surface is formed of a combination of unit plates divided into a plurality of parts with a gap.

In this means, a unit plate obtained by dividing a plate material is selected as a discontinuous structure, and a discontinuous gap is formed by combining the unit plates.

According to a third aspect of the present invention, in the box pallet of the first or second aspect, the discontinuous surface is provided with a slit in the plate material.

In this means, a slit formed in one or any plate material is selected as a discontinuous structure.

According to a fourth aspect of the present invention, in the box pallet according to any one of the first to third aspects, the discontinuous surface is provided with a large number of small holes in a plate material.

In this means, a large number of small holes formed in one or an arbitrary plate material are selected as a discontinuous structure.

According to a fifth aspect of the present invention, in the box pallet according to any one of the first to fourth aspects, the discontinuous surface is formed by a laminated structure of an inner layer plate and an outer layer plate, and the inner layer plate and the outer layer plate are frictionally slidable. It is characterized by being movably joined.

In this means, the collision sound is attenuated by reducing the vibration energy due to the collision by the discontinuous surface structure and the friction between the inner layer plate and the outer layer plate.

According to a sixth aspect of the present invention, in the box pallet of the fifth aspect, the outer layer plate has a laminated structure of a plurality of sheets.

In this means, in addition to the non-continuous surface configuration, the collision sound is dispersed and absorbed by the damping effect according to the friction surface having the laminated structure of the outer layer plates.

According to a seventh aspect of the present invention, in the box pallet according to any one of the first to fifth aspects, the discontinuous surface is fastened and joined to the outside of the frame material by a fastener.

According to this means, the amount of tightening of the tightening tool can be adjusted.
The friction of the discontinuous surface configuration is adjusted.

According to the eighth aspect of the present invention, in the box pallet according to the seventh aspect, the discontinuous surface is formed on the frame material by a fastener comprising a bolt loosely fitted in a mounting hole formed in the discontinuous surface. It is characterized by being fastened and joined.

According to this means, the slidability when the discontinuous surface configuration is rubbed by the loose fit of the bolt is ensured.

[0026]

An embodiment of a box pallet according to the present invention will be described below with reference to FIGS.

1 to 3 show an embodiment (1) of a box pallet according to the present invention.

In this embodiment, a rectangular box having only a top portion opened and a bottom plate portion and a side plate portion closed is shown. In this embodiment, the frame 1 and the plate 2 form a box shape.

The frame member 1 is composed of twelve square members.
A bottom frame 11 in which four square members are assembled in a window frame shape, a side frame 12 in which four square members are vertically raised from four corners of the bottom frame portion, and a side frame 12 near the upper end. And an upper frame 13 suspended in a cross shape. The bottom frame 11, the side frames 12, and the upper frame 13 of the frame material 1 are provided with a large number of bolt screw holes 3 regularly. As the material of the frame material 1, a metal material, a ceramic material, a composite material, or the like is selected according to a product to be integrated or a semi-finished product.

The plate member 2 is made up of 5 × 2 rectangular unit plates. The unit plate 2 has a flat plate shape as shown in the drawing, and is formed to a thickness that can withstand an impact. One surface × 2 sheets of the unit plate 2 are in contact with one surface surrounded by the bottom frame 11 of the frame material 1 from outside the bottom frame 11. The other four sides × 2 pieces of the unit plate 2 are respectively in contact with the four sides surrounded by the side frame 12 of the frame material 1 from outside the side frame 12. Each unit plate 2 has
A large number of bolt insertion holes 9 are regularly provided at contact positions with the frame material 1. Regarding the material of the unit plate 2, the frame material 1
The same material and different material can be freely selected.
Metal materials, ceramic materials, composite materials, etc. are selected according to the semi-finished product.

The frame 1 and the unit plate 2 are fastened and fixed by a fastener 5. The fastener 5 is loosely fitted into the bolt insertion hole 9 of the unit plate 2 and screwed into the bolt screw hole 3 of the frame member 1, and a washer through which the bolt 51 passes and abuts on the outside of the unit plate 2. 52 are selected. It is desirable that the diameter of the bolt insertion hole 9 is formed larger than the diameter of the bolt screw hole 3.

According to this embodiment, the unit plate 2 is assembled to the frame 1 in a box shape. The friction sliding structure including the bolt screw holes 3 and 4 and the tightening tool 5 has a simple structure, is inexpensive, and can be easily machined. In addition, two unit plates 2 are arranged on each surface, and a gap S is formed between each unit. The gap S is set such that the transmission of vibrations of the unit plates 2 and 2 is hindered, and the vibrations attenuate early.

As a result, the frame member 1 and the unit plate 2 form a box having rigidity that can withstand the drop impact of integrated products and semi-finished products. And products, semi-finished products and frame materials 1,
The radiation of the collision sound due to the collision with the unit plate 2 is reduced on each surface of the unit plate 2 divided by the gap S, and the collision sound between the product, the semi-finished product, the frame material 1, and the unit plate 2 is attenuated. become. In the gap S, a resonance type sound absorbing mechanism can be provided in a specific frequency range by devising the size and shape.

The natural frequency can be changed by adjusting the degree of tightening of the fastener 5 to each unit plate 2, 2, so that resonance through the gap S between each unit plate 2, 2 can be achieved. No longer occurs. In this case, resonance can be prevented by the number, position, and the like of the fasteners 5.

Further, since the material of the frame member 1 and the unit plate 2 can be freely selected, the durability can be improved by providing heat resistance, abrasion resistance and the like corresponding to the products and semi-finished products to be integrated. .

FIG. 4 shows an embodiment (2) of a box pallet according to the present invention.

In this embodiment, the unit plate 2 on each surface of the above-described embodiment (1) is constituted by a large number of strip-shaped long plates.

According to this embodiment, the same operation and effect as those of the above-described embodiment (1) can be obtained. The gap S
(The number of divisions of the unit plate 2) is increased and the radiation area of the collision sound is subdivided, so that the collision sound attenuation performance is improved. In this case, it is possible to exhibit a sound absorbing function in which resonance of the unit plates 2 and 2 is prevented in accordance with the degree of tightening of the tightening tool 5.

FIG. 5 shows an embodiment (3) of a box pallet according to the present invention.

In this embodiment, the division width of the unit plate 2 of the above-described embodiment (2) is made fine at the center side and gradually widened toward the outside. For example, the three sheets on the center side have a narrow width, the two sheets on both sides thereof have a wide width of about 1.2 to 1.5 times, and the outside has a wide width of about twice the narrow width.

According to this embodiment, the same operation and effect as those of the above-described embodiment (2) can be obtained. Products,
The impact sound attenuating performance on the center side where semi-finished products are likely to fall and collide is improved. Although not shown, it is also possible to make the center side thicker and arrange it in a narrower width toward the outside, thereby strengthening against falling collision on the center side.

FIG. 6 shows an embodiment (4) of the box pallet according to the present invention.

In this embodiment, the slit 6 is provided without completely dividing the plate member 2 of the above-described embodiment (2). The slit 6 is formed up to a position shortly between the frame members 1 and 1, and is formed with a wide circular hole 6a at both ends.

According to this embodiment, the same operation and effect as those of the above-described embodiment (2) can be obtained. In addition, the edge 2a of the undivided plate 2 can be welded and fixed to the frame 1 in a band shape, so that bending deformation near the edge of the plate 2 can be prevented and the box-shaped rigidity can be further improved. Although the case in which the slits 6 are provided at equal intervals is shown, the width interval can be changed as shown in FIG. 5, whereby the same operation and effect as in FIG. 5 can be obtained.

FIG. 7 shows an embodiment (5) of the box pallet according to the present invention.

In this embodiment, the slit 6 is provided without completely dividing the plate 2 of the above-described embodiment (3). Further, a number of small holes 7 are formed in the plate 2.

According to this embodiment, the same operations and effects as those of the above-described embodiments (3) and (4) can be obtained. Further, since the small holes 7 reduce the radiation area of the collision sound, the collision sound attenuation performance is further improved.

FIG. 8 shows an embodiment (6) of the box pallet according to the present invention.

In this embodiment, the plate material 2 is
And an outer layer plate 22. Although not shown, the plate 2 is formed on a discontinuous surface.

The outer layer plate 22 is made of a 5
It is made of a rectangular plate of two sides. 5 faces of outer layer plate 22 ×
The two sheets are in contact with the outside of the inner layer plate 21, respectively. Each outer layer plate 22 and inner layer plate 21 has a bolt screw hole 3
The bolt insertion holes 8 and 9 are provided corresponding to. The diameter a of the bolt insertion holes 8 and 9 is formed larger than the diameter b of the bolt screw hole 4. The material of the outer layer plate 2 can be freely selected from the same material as the frame material 1 and the inner layer plate 21 and a different material, and a metal material, a ceramic material, a composite material, or the like is selected according to a product to be integrated or a semi-finished product. Is done.

According to this embodiment, the inner layer plate 21 and the outer layer plate 22 of the plate member 2 are joined to the outside of the frame member 1 so as to be slidable.

As a result, a product, a semi-finished product and a frame material 1, a plate material 2
Vibration energy caused by collision with the inner plate 21 and the frame plate 1 and the inner plate 21
And the outer layer plate 22 reduces frictional noise between products and semi-finished products and the frame member 1 and the plate member 2.
When the amount of tightening of the fastener 6 is adjusted, the degree of friction between the inner layer plate 21 and the outer layer plate 22 is adjusted, and the amount of reduction in vibration energy is adjusted.

FIG. 9 shows an embodiment (7) of the box pallet according to the present invention.

In this embodiment, the outer layer plate 22 has a laminated structure of three laminating plates 221, 222, 223. Usually, the inner layer plate 21 and the lamination plates 221, 222, 22
3 uses mild steel, for example, the inner plate 21 is made of mild steel, the lamination plate 221 on the inner plate 21 side is made of stainless steel,
The intermediate laminating plate 222 can be made of copper, and the laminating plate 223 on the opposite side of the inner layer plate 21 can be made of aluminum. In this case, by selecting the material to be laminated, the damping performance can be adjusted by changing the friction coefficient and the thermal conductivity of the laminated structure.

According to this embodiment, the collision sound between the product and the semi-finished product and the frame material 1 and the plate material 2 is not only attenuated by the discontinuous surface but also the lamination plate 22 of the inner layer plate 21 and the outer layer plate 22.
The damping effect corresponding to the friction surface formed between the laminations 1, 222 and 223 is obtained. Therefore, the impact sound damping performance is improved.

As described above, in addition to the illustrated embodiment, the plate 2
It is also possible to make the discontinuous surface and the laminated structure of the inner layer plate 21 and the outer layer plate 22 only a box-shaped bottom plate portion. This embodiment also allows considerable attenuation of the impact noise.

Further, the inner layer plate 21 may have a laminated structure,
The outer layer plate 22 may have a laminated structure of four or more sheets.

[0058]

As described above, in the box pallet according to the present invention, the radiating surface vibrating due to the collision is divided, the collision sound is attenuated, and the structure of the discontinuous surface is improved in heat resistance, wear resistance and the like. In order to contribute to the improvement of the durability by freely selecting the material, it is possible to integrate products and semi-finished products in any temperature range with an attenuating function of a collision sound, which has an effect of high durability performance.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment (1) of a box pallet according to the present invention.

FIG. 2 is a longitudinal sectional view of an assembled state of FIG.

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is a bottom view showing the embodiment (2) of the box pallet according to the present invention.

FIG. 5 is a bottom view showing the embodiment (3) of the box pallet according to the present invention.

FIG. 6 is a bottom view showing the embodiment (4) of the box pallet according to the present invention.

FIG. 7 is a bottom view showing the embodiment (5) of the box pallet according to the present invention.

FIG. 8 is a sectional view of a main part showing an embodiment (6) of a box pallet according to the present invention.

FIG. 9 is a sectional view of a main part showing an embodiment (7) of a box pallet according to the present invention.

FIG. 10 is a perspective view showing a conventional example.

FIG. 11 is a perspective view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame material 2 Board material 21 Inner board 22 Outer board 5 Fastener 6 Slit 7 Small hole S Gap

Continuing on the front page (72) Inventor Masamitsu Hayakawa 1-18-18, Tsutsumidori, Sumida-ku, Tokyo, Japan AES Co., Ltd. Inventor Shintaro Fujiwara F-term (reference) 3E063 AA11 CA03 CA05 CA11 CB01 CC03 CD11 DA05 GG03 GG10

Claims (8)

[Claims] 1. A box pallet having a box shape with at least an upper part opened, wherein at least a bottom plate portion of the box shape is formed on a discontinuous surface. 2. The box pallet according to claim 1, wherein
A box pallet characterized in that the discontinuous surface is composed of a combination of unit plates divided into a plurality of units through a gap. 3. The box pallet according to claim 1, wherein a discontinuous surface is provided with a slit in a plate material. 4. The box pallet according to claim 1, wherein the discontinuous surface is provided with a large number of small holes in a plate material. 5. The box pallet according to claim 1, wherein the discontinuous surface is formed by a laminated structure of an inner layer plate and an outer layer plate, and the inner layer plate and the outer layer plate are joined so as to be slidable. Box pallet characterized by having. 6. The box pallet according to claim 5, wherein
A box pallet, wherein the outer layer plate has a multi-layer structure. 7. The box pallet according to claim 1, wherein the discontinuous surface is fastened to the outside of the frame member by a fastening tool. 8. The box pallet according to claim 7, wherein
A box pallet, wherein the discontinuous surface is fastened and joined to the frame material by a fastener comprising a bolt loosely fitted in a mounting hole formed in the discontinuous surface.