JP2008037469A - Tray for brittle column - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for well storing or transporting a product having a columnar shape formed of a fragile brittle material. <P>SOLUTION: A plate-like tray 1 includes two pockets 4 has a bottom face raising part 2 on a bottom face forming each pocket 4 and has side face raising parts 3 on side faces forming each pocket 4. When a brittle columnar body is stored or transported by using this tray 1, breakage can be prevented from occurring. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tray that can be transported or stored well without damaging a brittle columnar body.

  As a catalyst or filter for purifying exhaust gas for automobiles, a honeycomb structure having a columnar shape having a circular or elliptical cross section perpendicular to the axial direction is used. When such a honeycomb structure is shipped as a product, it is packed, transported or stored, and the honeycomb structure is mainly formed of ceramics that are brittle materials. For this reason, it has a problem that it is easily damaged due to the shock caused by the shaking.

  The same problem applies to all ceramic products, and also applies to all products that are made of brittle materials and exhibit columnar shapes, including glass products and plastic products in a narrow sense other than ceramic products. It is. In addition, Patent Literature 1 can be cited as a prior literature regarding prevention of breakage of ceramic products.

Japanese Patent Laid-Open No. 9-226837

  The present invention has been made in view of the above-described circumstances, and provides a means for storing or transporting a columnar product formed of a brittle material that is easily damaged without being damaged. Objective. As a result of repeated research, it has been found that this purpose can be achieved by packaging using the tray shown below.

  That is, first, according to the present invention, a tray used for transporting or storing a brittle columnar body has a plate shape and is provided with one or a plurality of pockets for accommodating the end face side of the brittle columnar body. In addition, in each of the bottom surface forming the pocket (also referred to as the pocket forming bottom surface or simply the bottom surface) and the side surface (also referred to as the pocket forming side surface or simply the side surface), except for the corner (corner portion) of the pocket where the bottom surface and the side surface contact each other The height TB of the erected portion provided on the bottom surface, the distance DB from the side surface of the erected portion provided on the bottom surface, the height TS of the erected portion provided on the side surface, and the bottom surface of the erected portion provided on the side surface. At a distance DS, a tray for a brittle columnar body (also simply referred to as a tray) that satisfies the relations DB> TS and DS> TB is provided.

  In this specification, the tray is expressed as a plate-like thing with pockets, but the tray is used for transporting or storing an object, and includes a tray, a shallow box, or a dish having a peripheral wall, Can also be expressed. A brittle columnar body is a brittle, columnar shaped body that is easily damaged. A pocket means not a bag-like container, but a hollow and a shallow hole.

  In a preferred embodiment, the upright portion has a constant height, but when it is not constant, the height TB of the upright portion provided on the bottom surface and the height TS of the upright portion provided on the side surface are the bottom surface or the side surface. Refers to the height of the highest part. The distance DB from the side surface of the erected part provided on the bottom surface and the distance DS from the bottom surface of the erected part provided on the side surface refer to the distance from the side surface or the bottom surface to the end of the nearest erected part.

  In the tray for brittle columnar bodies according to the present invention, it is preferable that the upright portion provided on the side surface forming the pocket is provided as a member separate from the side surface (of the tray main body). In this case, there may be a mode in which only the upright portion is retrofitted as a separate member. However, as a particularly preferable mode, the side surface forming the pocket is formed on one tray member that does not have only the upright portion provided on the side surface forming the pocket. The other tray member which has only the upright part with which it is equipped can mention what overlaps. That is, the tray has a double structure.

  The tray for a brittle columnar body according to the present invention is preferably formed using polypropylene, polyethylene, polyethylene terephthalate, vinyl chloride, iron, aluminum, or paper as a main material. When formed from a plastic material such as polypropylene, polyethylene, or polyethylene terephthalate, the preferred thickness is about 0.3 to 2.0 mm.

  The tray for a brittle columnar body according to the present invention is preferably formed of a foam material. As a preferable foaming material, a polyolefin resin obtained by foam molding can be exemplified. The polyolefin resin refers to a copolymer mainly composed of polyethylene, polypropylene, and olefin.

  Next, according to the present invention, one of the above-described two brittle columnar trays, the two brittle columnar trays, and the brittle columnar bodies supported by the two brittle columnar trays are accommodated. And a packaging body provided with the box. A cardboard box is preferably used as the box for accommodating the brittle columnar body.

  The tray for a brittle columnar body according to the present invention has a raised portion at each of the bottom surface and the side surface forming the pocket except for the corner of the pocket where the bottom surface and the side surface are in contact with each other. The relation of DB> TS and DS> TB in the height TB, the distance DB from the side surface of the erected part provided on the bottom surface, the height TS of the erected part provided on the side surface, and the distance DS from the bottom surface of the erected part provided on the side surface. Therefore, when the end face side of the brittle columnar body is stored in the pocket, the end face of the brittle columnar body comes into contact with the rising portion of the tray pocket forming bottom surface, and the peripheral surface of the brittle columnar body is the pocket of the tray. The brittle columnar body is firmly fixed by coming into contact with the rising portion of the formation side surface. As a result, an edge portion (portion where the end surface and the peripheral surface are in contact) that is considered to be most easily damaged among the brittle columnar bodies does not contact the tray. Therefore, if this tray is used during packaging, the brittle columnar body will not move unintentionally in the packaged body even if shaking occurs during transportation or storage after packaging, and the brittle columnar body Unnecessary stress is not applied to the edge portion. Therefore, when the brittle columnar body is stored or transported, there is no problem that the edge portion of the brittle columnar body hits the tray or the packing body and receives an impact and breaks.

  In the preferred embodiment, the tray for the brittle columnar body according to the present invention is provided with a raised portion provided on a side surface forming a pocket as a member separate from the side surface, and in a more preferred embodiment, on a bottom surface forming the pocket. It has a double structure in which one tray member that does not have only the raised portion is overlapped with another tray member that has only the raised portion provided on the bottom surface forming the pocket. Therefore, it is easy to produce. In other words, depending on the material used for the tray and the method for molding the tray, it may be difficult to mold the raised part provided on the side where the pocket is formed, but this part may be composed of a separate member. If it can be retrofitted, the difficulty of molding can be overcome.

  Hereinafter, embodiments of the present invention will be described with appropriate reference to the drawings, but the present invention should not be construed as being limited thereto. Various changes, modifications, improvements, and substitutions can be added based on the knowledge of those skilled in the art without departing from the scope of the present invention. For example, the drawings show preferred embodiments of the present invention, but the present invention is not limited by the modes shown in the drawings or the information shown in the drawings. In practicing or verifying the present invention, the same means as described in this specification or equivalent means can be applied, but preferred means are those described below.

  1-3 is a figure which shows one Embodiment of the tray for brittle columnar bodies which concerns on this invention. 1 is a plan view (top view), FIG. 2 is a cross-sectional view showing an AA cross section in FIG. 1, and FIG. 3 is a cross-sectional view showing a BB cross section in FIG. 4 and 5 are diagrams showing a cross section of a part of the tray when the honeycomb structure as an example of the brittle columnar body is stored in the tray for the brittle columnar body shown in FIGS. is there. 4 is a cross-sectional view showing a II cross section in FIG. 1, and FIG. 5 is a cross-sectional view showing a JJ cross section in FIG.

  The tray 1 shown in FIGS. 1 to 5 is a tray used for transporting or storing two cylindrical honeycomb structures. The tray 1 has a plate shape as a whole, and includes two pockets 4 that are spaces for accommodating the end face 12 sides of the two honeycomb structures 11. The tray 1 has a raised portion at the bottom and side surfaces forming the respective pockets 4 except for the corners 4a of the pockets 4 where the bottom surface and the side surfaces are in contact with each other.

  The erected portion is composed of a bottom erected portion 2 corresponding to the erected portion of the bottom surface and a side surface erected portion 3 corresponding to the erected portion of the side surface. As is apparent from FIGS. 2 to 5, a step is formed between the bottom raised portion 2 and the other portion on the bottom surface. On the other hand, on the side surface, the side surface upright portion 3 and the other portion are smoothly connected, and no step is formed. As a result, the side surface is formed in a tapered shape so as to expand toward the bottom surface.

  FIG. 6 is a cross-sectional view corresponding to FIG. 4, in which a tray having a step is illustrated. In the tray 101 shown in FIG. 6, the side surface rising portion 103 is provided on the side surface, but the side surface rising portion 103 and the other portion are not smoothly connected and there is a step. The side surface may be an embodiment like the tray 101 shown in FIG. In any case, the edge portion of the honeycomb structure 11 (portion indicated by P in FIGS. 4 and 6) does not contact the tray.

  As shown in FIG. 5, not all side surfaces of the tray 1 are in contact with the peripheral surface 13 of the honeycomb structure 11. This is because the recess 5 is formed on the side surface forming the pocket 4. In the side dent 5, the side surface itself is retracted as compared with the portion that is not the dent 5 where the side surface upright portion 3 is present, so the peripheral surface 13 of the honeycomb structure 11 does not hit the side surface and is not the dent 5. The side raised portions 3 included in the abutting portion abut against the peripheral surface 13 of the honeycomb structure 11 (see FIG. 4) to fix the honeycomb structure 11.

  In the tray 1, the height of the bottom raised portion 2 provided on the bottom surface is smaller than the distance from the bottom surface of the side raised portion 3 provided on the side surface, and the height of the side raised portion 3 provided on the side surface is the bottom raised portion provided on the bottom surface. It is smaller than the distance from the side surface of 2. Hereinafter, this point, which is a feature of the tray (for brittle columnar body) according to the present invention, will be described with reference to FIGS. 18 to 20 showing a tray having an upright portion with a step. In the following description referring to FIGS. 18 to 20, the height of the bottom surface upright 2 is TB, the distance from the side surface of the bottom surface upright 2 is DB, the height of the side surface upright 3 is TS, and the height of the side surface upright 3 is Let DS be the distance from the bottom.

  FIG. 18 is a view showing a cross section of a part of the brittle columnar tray according to the present invention when a honeycomb structure as an example of the brittle columnar body is housed in the brittle columnar tray according to the present invention. . FIGS. 19 and 20 are diagrams illustrating a case where a honeycomb structure, which is an example of a brittle columnar body, is placed in a conventional tray that is not a brittle columnar body tray according to the present invention. It is a figure which shows the cross section of a part of the conventional tray which is not. 18 to 20, the honeycomb structure 11 is drawn away from the bottom surface upright portion 2 and the side surface upright portion 3 for easy understanding.

  In FIG. 18, the relations DB> TS and DS> TB are satisfied. As a result, the edge portion of the honeycomb structure 11 (the portion indicated by P in FIG. 18) There is no contact with the tray including the upper part 3. On the other hand, in FIG. 19, although DB> TS is satisfied, DS <TB is satisfied. As a result, the edge portion (portion indicated by P in FIG. 19) of the honeycomb structure 11 is a part of the tray. It will contact | abut to the side standup part 3, and will become easy to be damaged. In FIG. 20, DS> TB is satisfied, but DB <TS is satisfied. As a result, the edge portion of the honeycomb structure 11 (portion indicated by P in FIG. 20) is a bottom surface standing part which is a part of the tray. Contact with the upper portion 2 increases the risk of breakage.

  The tray (for brittle columnar bodies) according to the present invention is a single unit and can be used to hold the brittle columnar bodies for transportation or storage. It is used in pairs to accommodate one end face side, and is suitably used as a package (packaging according to the present invention) combined with a box. 7 and 8 are perspective views showing a state in which the honeycomb structure is packed with a packing body including such a pair of trays and boxes. In FIG. 7, in order to transport or store 15 honeycomb structures 11, the two trays 71 accommodate and support both end surfaces (upper and lower in the drawing) of the honeycomb structures 11. In FIG. 8, the state in which the two trays 71 accommodate both the end surfaces of the honeycomb structure 11 is further shown in the box 8. The tray 71 shown in FIGS. 7 and 8 is provided with 15 pockets, which are spaces for accommodating the end face sides of the 15 honeycomb structures 11.

  Next, FIGS. 9-17 is a figure which shows other embodiment of the tray for brittle columnar bodies which concerns on this invention. This embodiment is a tray having a double structure in which one tray member is overlapped with another tray member to form one tray. 9 to 11 are views showing the tray member that is on the upper side (that is, the overlapping side) when stacked, FIG. 9 is a plan view (top view), and FIG. 10 is a cross-sectional view of CC in FIG. FIG. 11 is a cross-sectional view showing a DD cross section in FIG. 9. FIGS. 12 to 14 are views showing the tray member that is lower (ie, the side to be stacked) when stacked, FIG. 12 is a plan view (top view), and FIG. 13 is FIG. FIG. 14 is a sectional view showing an EE section in FIG. 12, and FIG. 14 is a sectional view showing an FF section in FIG. Further, FIGS. 15 and 16 are views showing a tray obtained by stacking two tray members and stacking them. 15 is a plan view (top view), and FIG. 16 is a cross-sectional view showing a GG cross section in FIG. When FIG. 9 is superimposed on FIG. 12, the result is FIG. 15, and when FIG. 10 is superimposed on FIG. 13, the result is FIG. In addition, FIG. 17 uses both the brittle columnar trays shown in FIG. 15 and FIG. 16 in pairs, and accommodates both end face sides of a cylindrical honeycomb structure which is an example of the brittle columnar body. FIG. 17 shows a cross section (corresponding to FIG. 16) in the case.

  The tray member 31 shown in FIGS. 12 to 14 does not have only an upright portion provided on a side surface forming the pocket 4. In other words, the tray member 31 is equivalent to the tray for a brittle columnar body according to the present invention except that there is no upright portion on the side surface. The tray member 31 has a plate shape as a whole, and includes two pockets 4 that are spaces for accommodating the end face 12 sides of the two honeycomb structures 11, and is a bottom surface that forms each pocket 4. Each of the portions except for the corner 4a of the pocket 4 where the bottom surface and the side surface are in contact has a bottom surface raised portion 2 corresponding to the raised portion of the bottom surface.

  Since the tray member 31 does not have a raised portion on the side surface, the tray member 21 shown in FIG. 9 to FIG. The tray member 21 has only a side upright portion 33 that is an upright portion provided on a side surface forming the pocket 4 and has no bottom surface. In FIGS. 10 and 11, a portion indicated by a dotted line is an opening.

  A tray 41 shown in FIGS. 15 and 16, which is formed by superimposing the tray member 21 on the tray member 31, is used for transporting or storing two cylindrical honeycomb structures as in the tray 1 described above. Tray. The tray 41 has a plate shape as a whole, and includes two pockets 4 that are spaces for accommodating the end face 12 sides of the two honeycomb structures 11 (see FIG. 17). The tray 41 has a bottom raised portion 2 based on the tray member 31 and a tray member on the bottom and side surfaces forming the respective pockets 4 except for the corner 4a of the pocket 4 where the bottom surface and the side surface are in contact with each other. 21 and a side upright 33 based on 21. That is, in the tray 41, the side surface itself forming the pocket 4 is provided by the tray member 31, and the side upright portion 33 is provided by the tray member 21. Therefore, in the tray 41, the tray member 21 and the tray member 31 are separate members, and it can be said that the side elevation 33 provided on the side surface forming the pocket 4 can be divided from the side surface.

  In the tray 41, as shown in FIGS. 15 to 17 and FIGS. 12 to 14, the bottom surface forming the pocket 4 is composed of the same tray member 31, and the bottom raised portion 2 is the same as the tray 1 described above. There is a step between the part and the other part. On the other hand, as shown in FIG. 15 to FIG. 17 and FIG. 9 to FIG. 11, on the side surface, the side upright portion 33 is provided on the tray member 21 stacked on the tray member 31. The tray member 31 is provided so as to float from the side surface. In the two pockets provided in the tray 41, the side raised portions 33 are in contact with the peripheral surface 13 of the honeycomb structure 11 on the side surface, and the honeycomb structure 11 is fixed.

  Next, FIG. 21 is a figure which shows other embodiment of the tray for brittle columnar bodies which concerns on this invention. FIG. 21 is a cross-sectional view corresponding to FIG. 2 in the above-described tray 1 and corresponding to FIG. 16 in the above-described tray 41. The tray 51 shown in FIG. 21 is thicker than the trays 1 and 41 described above, and the trays 1 and 41 are suitable for being produced by a vacuum forming method using a plastic material. On the other hand, the tray 51 has a shape suitable for being produced by a foam molding method using a plastic material.

  The tray 51 is a tray used for transporting or storing two cylindrical honeycomb structures. The tray 51 has a plate shape as a whole, and includes two pockets 4 that are spaces for accommodating the end face sides of the two honeycomb structures. The tray 51 has a raised portion at the bottom and side surfaces forming the respective pockets 4 except for the corners 4a of the pockets 4 where the bottom surface and the side surfaces contact each other.

  The upright portion is composed of a bottom upright portion 52 corresponding to the upright portion of the bottom surface and a side surface upright portion 53 corresponding to the upright portion of the side surface. As is clear from FIG. 21, a step is formed between the bottom raised portion 52 and the other portion on the bottom surface. Similarly, on the side surface, there is a step between the side upright portion 53 and the other portion. In the two pockets provided in the tray 51, the bottom raised portion 52 is in contact with the end face of the honeycomb structure at the bottom surface, and the side raised portion 53 is in contact with the peripheral surface of the honeycomb structure to fix the honeycomb structure. .

  Next, a method for producing a tray for a brittle columnar body according to the present invention will be described. The tray for a brittle columnar body according to the present invention can be produced by a vacuum forming method or the like using a plastic material mainly composed of polypropylene, polyethylene, polyethylene terephthalate, vinyl chloride or the like. Moreover, it can produce by foam molding, bonding, etc. using polypropylene, polyethylene, polyethylene terephthalate, etc. as main materials. The specific means is not particularly limited, and can be prepared by a known method. Furthermore, it can be manufactured by punching and using a paper, particularly cardboard paper or hard paper, and by laminating members. In particular, a tray made of foam-formed foam material further improves breakage prevention performance due to its buffering and elastic properties.

  The tray for brittle columnar bodies according to the present invention can be used as a means for satisfactorily storing or transporting products exhibiting brittle columnar shapes, including ceramic products, glass products in a narrow sense, and plastic products. In particular, it is suitably used as a means for storing or transporting a honeycomb structure used as a catalyst or filter for purifying exhaust gas for automobiles.

It is a top view (top view) which shows one Embodiment of the tray for brittle columnar bodies which concerns on this invention. It is sectional drawing which shows the AA cross section in FIG. It is sectional drawing which shows the BB cross section in FIG. FIG. 2 is a cross-sectional view showing a section of a portion of the tray when a honeycomb structure, which is an example of a brittle columnar body, is housed in the tray for the brittle columnar body according to the present invention, and is a cross-sectional view showing a II cross section in FIG. . FIG. 2 is a cross-sectional view showing a section of a portion of the tray when a honeycomb structure, which is an example of a brittle columnar body, is stored in the tray for a brittle columnar body according to the present invention, and showing a JJ cross section in FIG. . FIG. 5 is a cross-sectional view showing a mode different from FIG. 4 in which a step is generated on the side surface forming the pocket in the embodiment of the brittle columnar tray according to the present invention. It is a figure which shows one Embodiment of the package which concerns on this invention, and is a perspective view which shows the state which accommodated the brittle columnar body in the tray for brittle columnar bodies concerning this invention before accommodating in a box. It is a perspective view which shows one Embodiment of the package which concerns on this invention. It is a top view (top view) which shows an example of the tray member which comprises the tray for brittle columnar bodies which concerns on this invention shown by FIG. It is sectional drawing which shows CC cross section in FIG. It is sectional drawing which shows DD cross section in FIG. It is a top view (top view) which shows an example of the tray member which comprises the tray for brittle columnar bodies which concerns on this invention shown by FIG. It is sectional drawing which shows the EE cross section in FIG. It is sectional drawing which shows FF cross section in FIG. It is a top view (top view) which shows other embodiment of the tray for brittle columnar bodies which concerns on this invention. It is sectional drawing which shows the GG cross section in FIG. FIG. 17 is a view showing a cross section (corresponding to FIG. 16) when two brittle columnar body trays shown in FIG. 15 and FIG. 16 are used in pairs and both end face sides of the honeycomb structure are stored. . It is a figure which shows the cross section of a part of the tray for brittle columnar bodies which concerns on the said this invention when the honeycomb structure which is an example of a brittle columnar body is stored in the tray for brittle columnar bodies which concerns on this invention. It is a figure which shows the cross section of a part of the said conventional tray at the time of accommodating the honeycomb structure which is an example of a brittle columnar body in the conventional tray. It is a figure which shows the cross section of a part of the said conventional tray at the time of accommodating the honeycomb structure which is an example of a brittle columnar body in the conventional tray. It is sectional drawing which shows other embodiment of the tray for brittle columnar bodies which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 (For brittle columnar bodies) Tray 2 Bottom raised portion 3 Side raised portion 4 Pocket 4a (Pocket) Corner 5 Recess 8 Box 11 Honeycomb structure
12 End surface 13 (of honeycomb structure) 13 Peripheral surface 21 (of honeycomb structure) Tray member 31 Tray member 33 Side elevation 41 (for brittle column) Tray 51 (for brittle column) Tray 52 Bottom elevation 53 Side elevation Upper part 71 (for brittle columnar body) tray 101 (for brittle columnar body) tray 103 Side elevation

Claims (6)

A tray used to transport or store brittle columns,
It has a plate shape and is provided with one or a plurality of pockets for accommodating the end face side of the brittle columnar body,
In each of the bottom surface and the side surface forming the pocket, a portion excluding the corner of the pocket where the bottom surface and the side surface are in contact with each other, and
In the height TB of the upright portion provided on the bottom surface, the distance DB from the side surface of the upright portion provided on the bottom surface, the height TS of the upright portion provided on the side surface, and the distance DS from the bottom surface of the upright portion provided on the side surface, DB A tray for brittle columnar bodies satisfying the relation of> TS and DS> TB.   2. The tray for a brittle columnar body according to claim 1, wherein the upright portion provided on the side surface forming the pocket is provided by a member separate from the side surface.   The other tray member which has only the said standing part provided in the side surface which forms the said pocket is overlap | superposed on one tray member which does not have only the said standing part provided in the side surface which forms the said pocket. Tray for brittle columnar body.   The tray for a brittle columnar body according to any one of claims 1 to 3, which is formed using any one of polypropylene, polyethylene, polyethylene terephthalate, vinyl chloride, iron, aluminum, and paper as a main material.   The tray for brittle columnar bodies as described in any one of Claims 1-3 currently formed with the foaming material. Two trays for brittle columnar bodies according to any one of claims 1 to 5,
A package including the two brittle columnar trays and a box that accommodates the brittle columnar bodies supported by the two brittle columnar trays.

Images