JPH10167234A - Opening device for one way type container bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and quickly perform a discharging work of a content in a bag by a method wherein at an upper part of the main body, a pointed head fitting, and a cutting fitting having a blade part on the upper half, are provided, and a metal mesh is arranged at a lower part. SOLUTION: At the center of the top of an opening device main body 1 having a funnel-form shape, a needle-form pointed head fitting 2 and a cutting fitting 3 of an acute angle are provided, and a metal mesh 4 is arranged at a lower part, Also, on the upper half of the cutting fitting 3, a blade part 5 is provided. A container bag which is hung by a hoist is lowered on the opening device, and the bottom part of the container bag is pierced and torn by the pointed head fitting 2 which is arranged at the highest part, and in addition, the bottom part is pushed to open by the cutting fitting 3, and thus, an unpacking work of the container bag is performed. A discharged content drops by its own weight, and a simple screening is performed by the metal mesh 4 at the lower part of the device so that lumps of the powdery body may not be allowed to drop.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening device for a container bag for transporting fluid particles and liquids, and an opening method using the same.

[0002]

2. Description of the Related Art Container bags are widely used as containers for transporting irregularly shaped objects such as powders and granules. When discharging the contents of the bag, the bag is dropped by opening a discharge port provided at the bottom. The outlet is usually tightly bound by a string or the like, and the outlet is opened by pulling the string during the opening operation. In addition, a simple structure having no discharge port is called a one-way type, in which the bottom is broken by a cutting tool such as a sickle or a cutter to discharge the contents, and is not used again.

[0003]

However, the above two methods have the following problems. That is, since all work involves a person, there is a risk that the contents suddenly popping out may fall on the worker during the opening work. Further, when the contents of the bag are powder, dust is generated in the vicinity of the worker, so that it is necessary to prepare protective equipment such as a mask and goggles. As a means for safely performing opening work, Japanese Utility Model Laid-Open No. 5-77
In 086, a jig for pulling a string from a remote position is introduced. Although the use of the jig can avoid the work under the container, the worker is still exposed to dust, and there is also a problem in the reliability of the opening work.

[0004]

According to the present invention, there is provided a device as shown in FIG. 1 as a means for opening. This apparatus comprises a main body (1) having a burr metal fitting (2) and a cutting metal fitting (3), and a wire mesh (4) arranged below. If the upper half of the cutting fitting is provided with a blade (5), the opening can be made efficiently. In the opening method according to the present invention, the unpacking operation is performed by lowering the container bag suspended by the hoist onto the opening device, piercing the bottom with the burr metal fitting installed at the uppermost part, and further pushing out with the cutting metal fitting. Is what you do. In addition, if the cutting portion is provided with the blade portion (5) in the upper half, the opening can be cut open, which is more efficient. When the container bag is torn, the contents are easily discharged by its own weight, so that the discharging operation is performed by a simple operation.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An opening device according to the present invention is used by being attached to an inlet of an upper portion (6) of a storage container such as a hopper as shown in FIG. As described above, the container bag hung on the hoist is lowered onto the opening device, pierced by the burr bracket and the cutting bracket, cut off, and unpacked. The discharged content (7) falls by its own weight, but a simple sifting is performed by a wire mesh at the lower part of the device so that the powder does not fall down while solidified. It is sufficient that at least two cutting fittings are installed in the apparatus, but three or four cutting fittings are appropriate. Even if there are 5 or more, there is no difference in the efficiency and strength of the opening,
This is because the device becomes unnecessarily complicated and the weight increases.

[0006]

EXAMPLE An amorphous material for steel (specific gravity 2.0, total weight 1)
The results of unpacking and discharging operations using a one-way type container bag storing 000 kg) are shown. Table 1 shows the operation time when the opening device of the present invention and the conventional method (manual unpacking) are used. Numerical values in parentheses in the table are relative operation times (unit:%) when the conventional processing time is set to 100.

[0007]

[Table 1]

A comparative example using a conventional container bag,
Even when the opening device of the present invention is used, a work time almost proportional to the internal capacity is required. However, when comparing the case of the same capacity, when the opening device of the present invention is used, the working time is reduced to almost half, and the discharge is completed in a shorter time. That is, in the present invention, the bag can be opened only by lowering the bag attached to the hoist, and the troublesome unpacking operation can be omitted. Therefore, only the time required for discharging the contents can be expected in the operation time. In addition, since the hoist may be operated remotely, there is no need to approach the bag for unpacking, and the hoist is safe. Furthermore, since a one-way type container bag having no opening at the bottom can be used, there is an advantage that the quality of the amorphous material is maintained for a long time without fear of moisture absorption.

[0009]

According to the present invention, the bag can be discharged safely and quickly.

[Brief description of the drawings]

FIG. 1 is a sectional view of an opening device according to the present invention.

FIG. 2 is a diagram of a use mode of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Penetration bracket 3 Cutting bracket 4 Blade part 5 Wire mesh 6 Hopper 7 Contents of container bag

Claims (4)

[Claims] An opening device for a one-way container bag, comprising: a main body (1) having a burr metal fitting (2) and a cutting metal fitting (3), and having a piercing structure for arranging a wire mesh (4) below. 2. The opening device for a one-way container bag according to claim 1, wherein the upper half of the cutting fitting has a blade portion (5). 3. A method for opening a container bag, comprising opening a container using the opening device having the structure according to claim 1. 4. The method for opening a container bag according to claim 3, wherein a one-way type container bag having no opening at the bottom is used.