JP2015189503A - Storage method of bale, bale storage apparatus, bale package manufacturing method, bale package manufacturing apparatus, and bale package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage method of a bale, a bale storage apparatus, a bale package manufacturing method, and a bale package manufacturing apparatus in which a bale package can be efficiently stored in a bale transportation container without dropping the bale package from a vacuum cap regardless of the surface shape of the bale.SOLUTION: A bale storage method comprises: a step (A) of packaging a film 22 with a bale and obtaining a bale package; a step (B) of forming one or more slits in the film of the bale package obtained in the step (A); a step (C) of compressing the bale package obtained in the step (B); and a step (D) of lifting the bale package obtained in the step (C) by vacuum suction and storing the bale package in a transportation container.

Description

  The present invention relates to a bale storage method, a bale storage device, a bale package manufacturing method, a bale package manufacturing device, and a bale package.

  Synthetic rubber, which is a raw material for rubber products, is usually used by pressing crumb or powder rubber particles into a rectangular parallelepiped shape having a weight of about 35 kg using a press molding machine. What is press-molded is generally called a bale. After that, the veil is covered with a film such as polyethylene film or polystyrene film to prevent the bale from sticking to each other and to prevent foreign matter from entering, and the cardboard box, wooden box, metal container, paper bag, etc. It is stored in a container for delivery to the user.

  From the viewpoint of transportation efficiency, generally, a plurality of bales coated with a film (hereinafter referred to as “bale package”) are stacked and stored in a large transport container. For storage, a method using a robot arm having a vacuum suction device (hereinafter referred to as “vacuum cup”) to which a bale package can be attached and detached is generally used.

  However, when the bale package is lifted by vacuum suction with a vacuum cup, the film may be broken and the bale package may be detached from the vacuum cup.

  Conventionally, measures have been taken against this problem by vacuum-sucking the bale package with the film and the bale in close contact. For example, Patent Document 1 discloses a bale storage method using a facility capable of sequentially punching a bale package on a belt conveyor with a cylindrical roller having a plurality of blades protruding from the surface. In this method, the air between the packaging film of the bale package and the bale is released from the formed air vent so that it does not easily fall from the vacuum cup.

Japanese Patent Laid-Open No. 2004-99064

  However, in this method, when the vacuum cup suction surface of the bale has an uneven shape, air leaks from the uneven portion, the vacuum cup cannot be sufficiently adhered to the bale package, and the bale package falls. is there. For this reason, every time it drops, there is a work to store the dropped bale package again, and when the film is torn by the impact of the drop, a work to wrap the film again occurs, which reduces the production efficiency. There is.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and stores a bale that can be efficiently stored in a bale transport container without dropping the bale package from the vacuum cup regardless of the surface shape of the bale. It is an object of the present invention to provide a method, a bale storage device for performing the storage method, a bale package manufacturing method, a bale package manufacturing device for implementing the manufacturing method, and a bale package.

  As a result of intensive studies on the above problems, the present inventors have packed the bale with a resin film in a method for storing the bale in a transport container, and formed a notch in the film of the bale package. It was found that the above-mentioned object can be achieved by compressing and then vacuuming and storing it in a container for transportation, thereby completing the present invention.

The present invention is as follows.
[1]
A process (A) of obtaining a bale package by packaging the veil with a film;
A step (B) of forming one or more cuts in the film of the bale package obtained in the step (A);
A step (C) of compressing the bale package obtained in the step (B);
(B) lifting the bale package obtained in the step (C) by vacuum suction and storing it in a transport container;
Bale storage method.
[2]
The bale storage method according to [1], wherein the bale package is compressed in at least two directions in the step (C).
[3]
The bale storage method according to [1] or [2] above, wherein in the step (C), the arithmetic average roughness of the upper surface of the bale package is less than 10,000 μm.
[4]
The bale storage method according to any one of [1] to [3], wherein in the step (A), the bale is packaged with the film having a vent hole.
[5]
The bale storage method according to any one of [1] to [4], wherein in the step (D), the portion including the notch formed in the step (B) is vacuumed and lifted.
[6]
A packaging device for packaging a bale with a film to obtain a bale package;
A notch forming device for forming a notch in the film of the bale package;
A compression device for compressing the bale package from at least two directions;
An arm for vacuum-sucking the bale wrap and lifting it into a shipping container;
Bale storage device.
[7]
A process (A) of obtaining a bale package by packaging the veil with a film;
A step (B) of forming one or more cuts in the film of the bale package obtained in the step (A);
A step (C) of compressing the bale package obtained in the step (B).
Bale package manufacturing method.
[8]
The bale package manufacturing method according to [7], wherein the bale package is compressed from at least two directions in the step (C).
[9]
The method for producing a bale package according to [7] or [8] above, wherein in the step (C), the arithmetic average roughness of the upper surface of the bale package is less than 10,000 μm.
[10]
The method for producing a bale package according to any one of [7] to [9], wherein in the step (A), the bale is packaged with the film having a vent hole.
[11]
A packaging device for packaging a bale with a film to obtain a bale package;
A notch forming device for forming a notch in the film of the bale package;
A compression device for compressing the bale package from at least two directions,
Bale package manufacturing equipment.
[12]
A bale package obtained from the bale package production method according to any one of [7] to [10].
[13]
The bale package according to [12] above, wherein the arithmetic average roughness of the upper surface of the bale package is less than 10,000 μm.

  According to the present invention, a bale storage method capable of efficiently storing a bale package in a bale transport container without dropping from a vacuum cup, regardless of the surface shape of the bale as compared with the prior art, and the storage A bale storage device, a bale package manufacturing method, a bale package manufacturing device, and a bale package for carrying out the manufacturing method can be provided.

It is a schematic diagram showing the one aspect | mode of the bale storage apparatus for enforcing the bale storage method of this embodiment. It is a schematic diagram in the case of compressing a bale from one direction in the process (C) of the bale storing method of this embodiment. It is a schematic diagram in the case of compressing a bale from two directions in the step (C) of the bale storage method of the present embodiment. It is a schematic diagram in the case of compressing a bale from 3 directions in the process (C) of the bale storing method of this embodiment.

  Hereinafter, a mode for carrying out the present invention (hereinafter referred to as “the present embodiment”) will be described in detail. In addition, this invention is not limited to the following description, It can implement by changing variously within the range of the summary.

[Veil storage method]
In the bale storage method of this embodiment, the bale is packaged with a film to obtain a bale package (A), and one or more cuts are formed in the film of the bale package obtained in the step (A). The step (B), the step (C) of compressing the bale package obtained in the step (B), the bale package obtained in the step (C) is lifted by vacuum suction, and stored in a transport container. And (D).

[Veil storage device]
First, a bale storage device for carrying out the bale storage method will be described. In FIG. 1, the schematic diagram showing the one aspect | mode of the bale storage apparatus for enforcing the bale storage method of this embodiment is shown. The bale storage device of the present embodiment is a packaging device for packaging a bale with a film to obtain a bale package, a notch forming device for forming a cut in the film of the bale package, and the bale package in at least two directions. And an arm for vacuum-suctioning and lifting the bale package and storing it in a transport container.

(Packaging equipment)
The packaging device 21 is a device for packaging a bale with a film 22 to obtain a bale package. Specifically, the bale is sequentially transported by the transporting device 10 such as a belt conveyor, the film 22 spread vertically on the transporting direction line is pushed in, and temporarily stops on the transporting device 20. Thereafter, at this time, the veil is covered with the film 22, the sides of the film 22 are bonded with a seal bar 24 so as to seal the bale, and the excess film 22 is cut by the film cutting machine 23. A package is obtained.

(Forming equipment)
The forming device 31 is a device for forming a cut in the film 22 of the bale package. The means for forming the notch is not particularly limited, and a jig 32 that can penetrate the film can be used. For example, a cylinder having a scissors-shaped knife, a cylinder having a sharp tip, an iron plate having a rod-shaped protrusion having a sharp tip, and the like can be given. Also, the jig 32 can be carried and automatically or manually operated, whether it is installed on the transfer device 30 and automatically operates, or is installed at a location away from the production site and operates automatically. It may be a thing.

(Compressor)
The compression device 41 is a device that compresses the bale package on the transport device 40 from at least two directions. Examples of the compression device 41 are shown in FIGS. As shown in FIG. 2, in this embodiment, a bale package is put into a compression apparatus and compressed from at least one direction. Moreover, it is preferable to compress the bale package from two directions as shown in FIG. Furthermore, as shown in FIG. 4, the bale package can be compressed from three directions. In order to efficiently lift the bale pack with a vacuum cup, the surface perpendicular to the top of the bale is compressed from the short side direction and the long side direction with a pressure that does not cause plastic deformation of the bale pack, and the top surface of the bale is distorted in a barrel shape. More preferably. By compressing at least below the pressure in the bale forming step, the bale is not plastically deformed, and the film is in close contact with the top surface of the bail without being torn, so that efficient storage can be performed.

(arm)
The arm 50 is a conveying means that vacuum-sucks and lifts the bale package and stores it in a transport container. The means for vacuum-sucking the bale package is not particularly limited, and for example, a robot arm 50 having a vacuum cup 51 at the tip can be used. The vacuum cup 51 communicates with the vacuum pump through a robot arm 50 through a predetermined rubber tube or the like. The vacuum cup 51 contacts the bale package when the vacuum pump 51 is not in operation and sucks the bale package by vacuum suction. it can. Thereafter, the robot arm 50 is lifted and moved to a predetermined position of the transport container, the vacuum pump 51 is stopped, and the bale package can be left still and stored. In order to efficiently lift the bale package with the vacuum cup 51, the position where the vacuum cup 51 contacts the bale package is preferably as central as possible on the top surface of the bale. The vacuum cup 51 can ensure a sufficient suction force by contacting at least one notch.

[Veil form]
Although the veil of this embodiment has a rectangular parallelepiped, it is not required to be a strict rectangular parallelepiped and may be rounded or rounded. Further, a part of the side may be cut or rounded. Furthermore, the rectangular parallelepiped may be distorted as a whole.

  The dimensions of the veil are not particularly limited, but it is preferable that the short side is 200 mm to 500 mm, the long side is 200 mm to 1000 mm, and the thickness is 30 mm to 300 mm. The weight is not particularly limited, but is preferably 10 to 40 kg.

  The material for the veil is not particularly limited, and any material that is rubbery at room temperature can be applied. Examples thereof include polybutadiene, styrene-butadiene copolymer, polyisoprene, polychloroprene, and polybutylene. Further, impurities, additives, water and the like may be included. The veil may be an oil-extended rubbery polymer mixed with a predetermined amount of extending oil. The material of the extender oil is not particularly limited. For example, aroma oil, naphthenic oil, paraffin oil, and an aroma substitute oil having a polycyclic aromatic component of 3% by mass or less as measured by the IP346 method are used. Can be mentioned. Although it does not specifically limit about the usage-amount of extending oil, It is preferable that it is 5-60 mass parts.

[Process of packaging the veil with a film (A)]
A process (A) is a process of packaging a bale with a film and obtaining a bale package. The bale packaging film of the present embodiment is not particularly limited as a material, and a conventionally known material can be used. Examples thereof include olefin vinyl polymers, aromatic vinyl polymers, and copolymers thereof. Examples of the olefin vinyl polymer include high density polyethylene, low density polyethylene, polyethylene polymerized with a metallocene catalyst, ethylene vinyl acetate copolymer, and copolymers thereof. As the aromatic vinyl polymer, polystyrene polymer (GPPS with thermoplastic elastomer) blended with a thermoplastic elastomer such as styrene-butadiene-styrene copolymer (SBS), rubber reinforced polystyrene polymer (HIPS, MBS, ABS etc.).

  The dimensions of the film are not particularly limited, and those having a sufficient size to be able to wrap the bale can be used. Moreover, it is preferable that the thickness of a film is 30 micrometers-60 micrometers in order to ensure practically sufficient intensity | strength. Moreover, it is preferable to package a bale with the film which has a vent hole. By using a film having vent holes, the adsorptive power tends to be further improved.

[Step (B) of forming a cut in the film of the bale package]
Step (B) is a step of forming one or more cuts in the film of the bale package obtained in step (A). About the notch formed in the film of this embodiment, it is preferable to form at least 1 or more in the part which a bale package and a vacuum cup contact. Moreover, it is preferable to form a notch during or after packaging into the bale, and there is no problem even if the notch is formed in the bale itself.

  The shape of the notch is not particularly limited, and is preferably a cross shape or a round shape so that the veil and the film can be brought into close contact efficiently with a vacuum cup. The size and number of cuts are not particularly limited, and are preferably less than 10 cm and less than 1000 for the purpose of securing the strength of the film.

[Step of compressing bale package (C)]
Step (C) is a step of compressing the bale package obtained in step (B). Although the compression direction is not particularly limited, it is preferable to compress the bale package from at least two directions. By compressing from at least two directions, the attractive force tends to be further improved.

In the step (C), it is preferable that the arithmetic average roughness of the upper surface of the bale package is less than 10,000 μm. When the arithmetic average roughness is less than 10,000 μm, the adsorptive power tends to be further improved. The lower limit of the arithmetic average roughness is not particularly limited, but is preferably 0 μm or more. Here, the “arithmetic mean roughness” means a curve drawn by the upper surface of a cross section when the horizontal direction with respect to the bale upper surface is taken as the x axis, the vertical direction is taken as the y axis, and the bale upper surface is cut in the vertical direction. In the case of (x), the arithmetic average surface roughness Ra is expressed by the following formula (1). In addition, in the range of 30 mm from the outer edge part of the upper surface of the bale, the amount of rubber protruding from the bale is uneven and the shape is also uneven, and therefore it is not included in the calculation of the arithmetic average roughness.

[Step (D) in which the bale pack is lifted by vacuum suction and stored in a transport container]
Step (D) is a step in which the bale package obtained in step (C) is lifted by vacuum suction and stored in a transport container. In the step (D), it is preferable to lift the portion including the notch formed in the step (B) by vacuum suction. The suction force tends to be further improved by lifting the portion including the cut by vacuum suction.

  For storage of the bale package of the present embodiment in a transport container, a plurality of bale packages may be stored, or two or more bale packages may be arranged in the vertical direction and / or the horizontal direction in the container, Two or more steps may be stacked in the height direction. Adjacent bale packages may be in close contact with each other, or may be in a state where a predetermined gap due to work process convenience or a gap provided in consideration of deformation due to load or heat is open. Further, the bale package may be automatically stored by a conventionally known robot arm or the like, or may be stored manually.

  The transport container is not particularly limited as long as it is a container used for conventional storage or the like, but from the viewpoint of storage space and transport efficiency, a resin or metal cuboid or a strong solid that can be stacked or A cubic shape is preferred. Moreover, it is preferable to cover the upper part of the container with a resin sheet, corrugated paper, or the like to prevent contamination of foreign matters such as dust.

  The bale package may be stored in the transport container in a state where it is densely laid on a predetermined pallet and stacked at a desired height. Specifically, after a bale package is loaded on a predetermined pallet at a height suitable for a transport container, it is wrapped or covered with a predetermined resin film such as a low-density polyethylene resin film. You may store in a container for transportation. Further, corrugated paper or a predetermined resin plate may be sandwiched between the bale package and the transport container. Thereby, when removing the side plate of a container, collapse of a load can be prevented effectively, and when these materials have a moisture absorption capability, the dew condensation of the storage body of a bale package can be prevented.

  The pallet is not particularly limited, and a conventionally known material can be used, but it is preferable that the pallet is made of a resin or metal having a strength capable of stacking the bale package.

[Veil package manufacturing method]
In the bale package manufacturing method of the present embodiment, the bale is packaged with a film to obtain the bale package (A), and one or more cuts are made in the film of the bale package obtained in the step (A). A step (B) of forming, and a step (C) of compressing the bale package obtained in the step (B). Steps (A) to (C) are the same as those described above.

[Veil package manufacturing equipment]
The bale package manufacturing apparatus for carrying out the bale package manufacturing method of the present embodiment is a packaging apparatus for obtaining a bale package by packaging the bale with a film, and for forming a cut in the film of the bale package A notch forming device and a compression device for compressing the bale package from at least two directions. Each device provided in the bale package manufacturing apparatus is the same as described above.

[Veil packaging]
The bale package of the present embodiment is obtained from the above bale package manufacturing method. The arithmetic average roughness of the upper surface of the bale package is preferably less than 10,000 μm. When the arithmetic average roughness is less than 10,000 μm, the adsorptive power tends to be further improved.

  Specific embodiments of the present invention are shown below, but the present invention is not limited to the following examples.

(Arithmetic mean roughness)
The measurement method of arithmetic average roughness is shown below.
During the process of compressing the bale package, a CCD camera was installed at a position where the bale package was captured from the side of the compression device, and the compressed bale package was photographed from the side. The contour of the upper surface of the bale package of the photographed image was drawn, the portion excluding 30 mm on both ends of the obtained contour was divided into 10 mm, and the arithmetic average roughness was calculated from Equation (1). Since one end of the divided outline is set to x = 0, l = 10 mm, and the lowest position of the divided outline is set to y = 0. The average value of the obtained arithmetic average roughness is the arithmetic average roughness of the contour line, and this is measured three times by changing the direction of the camera. The average of the arithmetic average roughness of each contour line is the bale package. The arithmetic average roughness of the upper surface was used.

(Example 1)
720 oil-extended SBR (trade name: Toughden (registered trademark) 4850: manufactured by Asahi Kasei Chemicals) is packed with a thermoplastic low-density polyethylene film without vents, and 1 cm in length on the top of the bale package A total of twelve cross-shaped cuts were formed, and the side surface of the bale package was compressed from two directions at a pressure of 8.8 MPa for 10 seconds on the molding table. The arithmetic average roughness was 5100 μm. A vacuum cup was adsorbed and lifted so as to cover the cut portion, and 36 pieces were stored in a storage container. The total number of bale packages dropped from the vacuum cup in the storing step was 0, which was accepted.

(Example 2)
BR (trade name: Diene (registered trademark) 35R: manufactured by Asahi Kasei Chemicals) 720 veils are wrapped with a thermoplastic low-density polyethylene film without vents, and a round shape with a diameter of 1 centimeter on the top of the bale package A total of six cuts were formed in the plate, and the side surface of the bale package was compressed from two directions at a pressure of 5.8 MPa for 8 seconds on the molding table. The arithmetic average roughness was 3900 μm. The vacuum cup was adsorbed and lifted so as to cover the cut portion, and 30 pieces were stored in the storage container. The total number of bale packages dropped from the vacuum cup in the storing step was 0, which was accepted.

(Example 3)
720 oil-extended SBR (trade name: Toughden (registered trademark) 4850: manufactured by Asahi Kasei Chemicals) is wrapped with a thermoplastic low-density polyethylene film with a 5-mm diameter vent and long on the top of the bale package. A total of 12 1-cm cross-shaped cuts were formed, and the side surface of the bale package was compressed from two directions at a pressure of 8.8 MPa for 10 seconds on the molding table. The arithmetic average roughness was 5300 μm. A vacuum cup was adsorbed and lifted so as to cover the cut portion, and 36 pieces were stored in a storage container. The total number of bale packages dropped from the vacuum cup in the storing process was one, which was accepted.

Example 4
BR (brand name Diene 35R: manufactured by Asahi Kasei Chemicals) 720 veils are wrapped with a thermoplastic low-density polyethylene film without vents and cut into a 2 cm long rice stamp on the top of the bale wrap. A total of 12 pieces were formed, and the side surface of the bale package was compressed from two directions at a pressure of 1.2 MPa for 3 seconds on a forming table. The arithmetic average roughness was 11300 μm. The vacuum cup was adsorbed and lifted so as to cover the cut portion, and 30 pieces were stored in the storage container. The total number of bale packages dropped from the vacuum cup in the storing step was 6, which was accepted.

(Example 5)
Oil-extended SBR (trade name: Toughden (registered trademark) 4850: manufactured by Asahi Kasei Chemicals) is packed with 720 veils of thermoplastic low-density polyethylene film without vents, and the upper surface of the bale package is 5 mm long. A total of 48 straight cuts were formed, and the side surface of the bale package was compressed from only one direction at a pressure of 8.8 MPa for 12 seconds on the forming table. The arithmetic average roughness was 8900 μm. A vacuum cup was adsorbed and lifted so as to cover the cut portion, and 36 pieces were stored in a storage container. The total number of bale packages dropped from the vacuum cup in the storing process was two, which was accepted.

(Example 6)
BR (brand name Diene (registered trademark) 35R: manufactured by Asahi Kasei Chemicals) 720 veils are wrapped with a thermoplastic low-density polyethylene film without vents, and a 1 cm long cross on the top of the bale package A total of 12 notches were formed in the mold, and the side surface of the bale package was compressed from two directions at a pressure of 5.8 MPa for 10 seconds on the molding table. The arithmetic average roughness was 2700 μm. The vacuum cup was adsorbed and lifted away from the cut portion, and 30 pieces were stored in the storage container. The total number of bale packages dropped from the vacuum cup in the storing step was 8, which was regarded as acceptable.

(Comparative Example 1)
720 oil-extended SBR (trade name: Toughden (registered trademark) 4850: manufactured by Asahi Kasei Chemicals) is packed with a thermoplastic low-density polyethylene film without vents, and 1 cm in length on the top of the bale package A total of 12 circular cuts were formed. The arithmetic average roughness was 12700 μm. A vacuum cup was adsorbed and lifted so as to cover the cut portion, and 36 pieces were stored in a storage container. The total number of bale packages dropped from the vacuum cup in the storing step was 17 and was rejected.

  INDUSTRIAL APPLICABILITY The bale storage method, bale storage device, bale package manufacturing method, bale package manufacturing device and bale package of the present invention are industrially used in the field of packaging, storing, transporting, storing and transporting various packages. Have potential.

DESCRIPTION OF SYMBOLS 10 Conveying device 20 Conveying device 21 responsible for step (A) Packaging device 22 Film 23 Film cutting machine 24 Seal bar 30 Conveying device 31 Notch forming device 32 Jig 40 for forming a notch 40 Conveying device 41 Compression device 50 Robot arm 51 Vacuum cup

Claims (13)

A process (A) of obtaining a bale package by packaging the veil with a film;
A step (B) of forming one or more cuts in the film of the bale package obtained in the step (A);
A step (C) of compressing the bale package obtained in the step (B);
(B) lifting the bale package obtained in the step (C) by vacuum suction and storing it in a transport container;
Bale storage method.   The bale storage method according to claim 1, wherein in the step (C), the bale package is compressed from at least two directions.   The bale storage method according to claim 1 or 2, wherein in the step (C), the arithmetic average roughness of the upper surface of the bale package is less than 10,000 µm.   The bale storage method according to any one of claims 1 to 3, wherein in the step (A), the bale is packaged with the film having a vent hole.   The bale storage method according to any one of claims 1 to 4, wherein, in the step (D), the portion including the cut formed in the step (B) is lifted by vacuum suction. A packaging device for packaging a bale with a film to obtain a bale package;
A notch forming device for forming a notch in the film of the bale package;
A compression device for compressing the bale package from at least two directions;
An arm for vacuum-sucking the bale wrap and lifting it into a shipping container;
Bale storage device. A process (A) of obtaining a bale package by packaging the veil with a film;
A step (B) of forming one or more cuts in the film of the bale package obtained in the step (A);
A step (C) of compressing the bale package obtained in the step (B).
Bale package manufacturing method.   The bale package manufacturing method according to claim 7, wherein in the step (C), the bale package is compressed from at least two directions.   The bale package manufacturing method according to claim 7 or 8, wherein in the step (C), the arithmetic average roughness of the upper surface of the bale package is less than 10,000 µm.   The bale package manufacturing method according to any one of claims 7 to 9, wherein in the step (A), the bale is packaged with the film having air holes. A packaging device for packaging a bale with a film to obtain a bale package;
A notch forming device for forming a notch in the film of the bale package;
A compression device for compressing the bale package from at least two directions,
Bale package manufacturing equipment.   The bale package obtained from the bale package manufacturing method according to any one of claims 7 to 10.   The bale package according to claim 12, wherein the arithmetic average roughness of the upper surface of the bale package is less than 10,000 µm.