JP6532027B2 - Method of protecting objects to be packed such as fruits by cushioning material - Google Patents

Description

  The present invention relates to a method for protecting materials to be packed such as fruits and vegetables that are easily damaged during transportation of grape bunches and the like.

  Fruits and the like are damaged during shipping, their appearance is degraded, and their commercial value is greatly reduced. For this reason, the protection method by a shock absorbing material which is disclosed by patent documents 1-3 is proposed.

  In Patent Document 1, as a packing form of strawberries, an embossed sheet-like buffer material is used to cover one side of adjacent strawberry grains from the top and alternately cover the strawberry grains so as to cover the other from the bottom. Such protection methods are disclosed.

  Although the kind of fruit is not specified in patent document 2, as a buffer material which protects round fruit and vegetables, the buffer material which raised the buffer wall which divides between fruit and vegetables is proposed.

  Patent Document 3 discloses a tray obtained by molding a resin sheet as a storage container for pineapples, in which trays are alternately formed with recesses for storing pineapples, and a portion of the pineapple is dropped on the bottom of each recess. It has been proposed to form a drop-in part to be stabilized by the

  Although the above Patent Documents 1 to 3 disclose protection using a shock absorbing material specialized for fruits and vegetables, Patent Document 4 overlaps cardboard as shock absorbing materials not limited to protection of fruits and vegetables, and is packaged A method is disclosed for forming a recess adapted to the shape of an object.

  Patent Document 5 proposes a method of processing into a three-dimensional shape. In this proposal, it is disclosed that slice data is created from three-dimensional CAD data, and a large number of thin sheets are laminated and fixed based on the slice data to manufacture a mold or the like.

Japanese Patent Application Publication No. 2004-0671141 JP 2004-217220 A Japanese Patent Application Laid-Open No. 2007-030958 Unexamined-Japanese-Patent No. 9-240739 Unexamined-Japanese-Patent No. 11-138388 gazette

  Since the protection method disclosed in Patent Document 1 merely wraps the surface of the object to be packed such as fruits with a sheet-like cushioning material, a large cushioning effect can not be expected, and when the size of the object to be packaged is large, Packing work is also troublesome.

  The buffer material disclosed in Patent Documents 2 to 4 has a fixed shape of the recess for containing the item to be packaged, and a certain amount of buffer effect is exerted on the fruit having almost no change in shape, but the grape bunch As the shape of the individual bunches greatly changes like in the case of the grape bunches, the particles fall off with only a slight force. Can not.

  Moreover, the method disclosed by patent documents 2-4 tends to become inadequate [the shock absorbing effect with respect to the vibration of the up-down direction], and it becomes necessary to protect a to-be-packaged item from the top using another shock absorbing material.

  When the technology disclosed in Patent Document 5 is applied to the protection of an object to be packaged, slice data is created from three-dimensional CAD data of the object to be packaged, and a number of thin sheets are stacked and fixed based on the slice data. The recessed part according to the shape of the to-be-packaged thing will be formed. However, in this method, it is necessary to cut the sheet based on slice data, which is time consuming and disadvantageous in cost.

  In order to solve the above-mentioned subject, the present invention is a method of protecting packing things, such as fruit, using shock absorbing materials, such as a urethane sheet, and three-dimensional shape of the said packing thing was measured and measured. In order to surround the periphery of the object to be packaged with a buffer material according to the shape, a plurality of buffer material sheets having through holes formed in the thickness direction and having different shapes of the through holes are prepared. The shock absorbing material sheet is selected from among the plurality of shock absorbing material sheets, and the shock absorbing material sheet is formed by measuring the external shape of each predetermined height and forming a through hole having a size close to the external shape with a size that fits the external shape. The buffer sheets are sequentially stacked to form a recess by the through hole, and the object to be packaged is stored in the recess.

  When, as a result of stacking the buffer sheets, the through hole formed in the upper buffer sheet is smaller than the through hole formed in the lower buffer sheet, the lower buffer is used for the upper buffer sheet. It is conceivable to separate the sheet without adhering to the sheet of material and to put the object to be packed in a recess and then to cover it.

  The through hole is an ellipse, and the outer shape of the object to be packaged is determined as an ellipse in plan view, and the major axis and the minor axis of the ellipse are determination factors of whether the shape of the through hole and the outer shape of the object to be packaged are close in shape It may be

  According to the method of protecting an object to be packed, such as fruits, by the buffer material according to the present invention, a large number of buffer material sheets in which through holes of different shapes are formed in advance are prepared. By selecting a cushioning material sheet having the closest through hole shape for each height and overlapping a plurality of selected sheets, it is possible to automatically and quickly form an optimum package storage space.

  In particular, if an ellipse is selected as the through hole shape and the outline of the object to be packed for each predetermined height determined based on the three-dimensional measurement result is an ellipse, the comparison between the through hole and the outline of the object to be packed is the major axis of the ellipse And it can be done only from the minor axis, which makes automatic processing easy.

The figure explaining the conveyance line which enforces the protection method of the to-be-packaged goods, such as fruit, by the shock absorbing material concerning the present invention A diagram illustrating the process of selecting a shock absorber sheet based on the measured values of the three-dimensional shape of the item to be packaged Sectional drawing which shows the state in which the to-be-packaged goods were accommodated in the recessed part of the buffer material sheet which was laminated | stacked

Embodiments of the present invention will be described below with reference to the attached drawings. In the embodiment, a bunch of grapes was taken as an example of the material to be packaged.
The transport line of the objects to be packaged is constituted by the belt conveyor 1, and the objects to be packaged 2 are transported from the left side to the right side in FIG.

  A three-dimensional shape measuring device 3, a buffer material sheet stock unit 4, a transfer device 5 disposed between the stock unit 4 and the belt conveyor 1 are provided along the transfer line, and a cardboard box is provided at the end of the transfer line. Six are arranged.

  The three-dimensional shape measuring apparatus 3 includes a control unit in addition to the two cameras 31 and 32, and a large number of buffer sheets 41 made of urethane are placed on the stock unit 4. An elliptical through hole 42 is formed in the cushioning material sheet 41, and the through holes 42 are collectively placed on the stock portion 4 in accordance with the dimensions of the major axis and the minor axis of the through hole 42.

  The transfer device 5 includes a rail member 51 capable of reciprocating along the longitudinal direction of the transport line, and a suction member 52 supported by the rail member 51 and reciprocally movable in the width direction of the transport line, An optional buffer sheet 41 placed on the stock unit 4 can be transferred onto the belt conveyor 1.

  In the above, when the to-be-packaged object 2 placed on the belt conveyor 1 is conveyed to the three-dimensional shape measuring device 3, the three-dimensional shape measuring device 3 is shown in FIG. As such, slice data for each of the predetermined heights (L1 to L4) is measured.

  From the slice data at each height (L1 to L4), the control unit of the three-dimensional shape measurement apparatus 3 specifies a planar shape at the height and then determines the smallest ellipse 33 containing the planar shape.

  Using the major axis R1 and the minor axis R2 of the smallest ellipse 33 at each determined height (L1 to L4) as a comparison factor, first, to the ellipse 33 of the item to be packaged 2 at the height of the lowermost position (L1) The shock absorbing material sheet 41 in which the through holes 42 having the closest shape are formed is selected, and the shock absorbing material sheet 41 is adsorbed by the suction member 52 of the transfer device 5 and mounted on the belt conveyor 1.

  Then, the shock absorbing material sheet 41 in which the through hole 42 of the shape closest to the ellipse 33 of the to-be-packaged item 2 in height of position (L2) on it is formed is selected, This shock absorbing material sheet 41 is carried out by the same means. The sheet is placed on the buffer sheet 41 already placed on the conveyor 1. In this case, it is preferable to prevent the buffer material sheets 41 from shifting with an adhesive or a fastening tool.

  In the above-described procedure, up to the buffer material sheet 41 in which the through hole 42 having the shape closest to the ellipse 33 of the object to be packaged 2 at the height of the position (L4) is formed. As a result, as shown in FIG. 3, since the recess 43 in which the package 2 is stored is formed by the plurality of through holes 42, the package 2 is stored in the recess 43 and the cardboard box is stored Put in 6

  In the above, the size of the through hole 42 formed in the uppermost shock absorbing material sheet 41 is smaller than the through hole 42 formed in the lower shock absorbing material sheet 41. Even in such a case, the uppermost shock absorbing material sheet 41 may be adhered to the lower sheet 41 as long as the to-be-packaged object 2 can be accommodated in the recess 43 without difficulty, but the to-be-packaged object 2 is impossible When force is applied, the uppermost shock absorbing material sheet 41 is merely put on without adhering.

  In the embodiment, in order to ensure consistency between the shape of the object to be packaged 2 and the shape of the through hole 42 formed in the shock absorbing material sheet 41, the planar shape of the object to be packaged 2 is elliptical and the through hole is also elliptical However, the means for achieving consistency is not limited to this.

  Further, although the illustrated example shows an example in which the size of the through hole 42 of the uppermost cushioning material sheet 41 is smaller than the through hole 42 of the cushioning material sheet 41 therebelow, the through hole of the uppermost cushioning material sheet 41 42 may be the largest (a bowl-shaped recess 43).

  The method for protecting a product such as fruit by means of the buffer material according to the present invention can be effectively applied not only to fruits such as grapes, but also to vegetables such as tomatoes and those relatively easily deformed during transportation.

    DESCRIPTION OF SYMBOLS 1 ... Belt conveyor, 2 ... Packaged thing, 3 ... Three-dimensional shape measuring apparatus, 31, 32 ... Camera, 33 ... Oval, 4 ... Stock part, 41 ... Buffer material sheet, 42 ... Through hole, 43 ... Recess, 5 ... Transfer device, 51 ... Rail, 52 ... Adsorption member, 6 ... Cardboard box.

Claims (2)

  A method for protecting an object to be packed such as fruits using a buffer material such as a urethane sheet, which measures the three-dimensional shape of the object to be packed and buffers the periphery of the object to be packed according to the measured three-dimensional shape. A plurality of cushioning material sheets having through holes formed in the thickness direction and surrounded by the material and having different shapes of the through holes are prepared, and the outer shape of the object to be packaged is measured at predetermined heights. A shock absorbing material sheet having a size in which the outer shape fits and in which a through hole having a shape closest to the outer shape is formed is selected from the plurality of shock absorbing material sheets, and the selected shock absorbing material sheets are sequentially stacked. A concave portion is formed by the above, and the to-be-packaged material is accommodated in the concave portion.   The protection method according to claim 1, wherein the through hole is an ellipse, the outer shape of the packaged object is determined as an ellipse in plan view, and the major axis and the minor axis of the ellipse are the shape of the through hole and the outer shape of the packaged object. A method for protecting a material to be packed such as fruit by a buffer material, wherein the factor is used to determine whether the shape is close or not.