JP2009096545A - Flexible container bag unsealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible container bag unsealing device having a simple structure capable of easily discharging the stored content in the flexible container bag even if its flowability is low. <P>SOLUTION: A flexible container bag mounting table 2 is installed at the upper part of a unloading hopper 1, a rotatable rotary member 3 having a cutter blade 4 fixed thereto is fixed to the flexible container bag mounting table 2, wherein the rotary member 3 is rotated to cut the bottom part of the flexible container bag and open the seal of the flexible container bag. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for safely and quickly opening a flexible container bag (hereinafter referred to as “flexible container”) containing irregular refractories and discharging the contents.

  Conventionally, the opening of a flexible container is hung directly above a mixer for kneading an irregular refractory or a load receiving hopper (hereinafter simply referred to as a “hopper”) for storing an irregular refractory before kneading an irregular refractory. The worker put his hand under the flexible container in a suspended state and opened the bottom of the flexible container with a knife such as a sickle. However, this work is a work under the suspended load and is a dangerous work. Therefore, various techniques have been developed. In Patent Document 1, a knife body with an upper blade is fixed in an inverted V shape at an opening in a hopper, and when the suspended flexible container is lowered to the hopper opening, the flexible container bottom is brought into contact with the knife body, It is a mechanism to open the FIBC. Patent Document 2 is a mechanism in which a deposit stand is fixed to the upper end of the hopper opening, a cutter is provided on the deposit stand so as to be movable by driving means, and after the flexible container is placed on the deposit table, the bottom of the flexible container is opened with the cutter. is there.

  In Patent Document 1, the FIBC contents are fluid to some extent, such as powder, and when the FIBC can be deformed, it can be opened greatly, and this is an economically effective means. When there is almost no, the cutting edge cannot enter sufficiently, the opening is small, and the contents are not discharged. For this reason, as described above, incisions were often made manually with a blade.

  Since Patent Document 2 has a drive device, it requires less labor than Patent Document 1, but has a demerit that the structure of the device becomes very complicated and the manufacturing cost increases. Moreover, even if it has a plurality of blades, since the blades move only in parallel and linearly, the substantial opening diameter is not so large. Only applicable.

Japanese Utility Model Publication No. 04-132017 Japanese Patent Laid-Open No. 11-292044

  The inventors studied the problems of the prior art and led to the development of the flexible container opening device according to the present invention.

  In the case of a material having a certain degree of fluidity such as powder, a flexible container with a discharge port is used, and the material flows down when the discharge port is opened. However, when the contents of the FIBC are kneaded and filled with materials that hardly flow, a shelf hanging phenomenon occurs inside the FIBC, and smooth discharge cannot be performed unless there is an opening diameter that is almost the same as the FIBC diameter.

  Therefore, we developed a flexible container device that can be opened with a simple structure and a large opening diameter, and put it to practical use.

The structure and function of the opening device according to the present invention will be described below. A flexible container storage is installed at the top of the hopper, and the flexible container transported by a crane or the like is temporarily put on this storage.
A rotatable rotating body having cutting teeth is attached to the outside of the flexible container depositing base, and the rotating body is rotated by a motor or the like to cut the bottom of the flexible container and open the flexible container. 1).

  The rotating body automatically stops when it has rotated more than half of the bottom of the flexible container and less than the entire circumference, and the flexible container bottom is cut by the amount of rotation of the rotating body (Claim 2). By lifting the flexible container again, the bottom part of the flexible container is opened, and the material can be discharged smoothly, and since the bottom part of the flexible container is not cut, it is lifted together with the main body, and the fragments of the flexible container are not mixed with the material.

  An example of the flexible container apparatus according to the present invention will be described with reference to FIGS. This apparatus is used when cutting and supplying a part of the bottom of the flexible container when supplying the material from the flexible container to a hopper or the like.

  A flexible container (not shown) conveyed by a crane or the like is placed on a flexible container depositing base 2 installed at the upper part of the hopper 1. A rotating body 3 having cutting teeth 4 attached thereto is attached around the flexible container depositing table 2, and the rotating body 3 is rotated by a drive motor 5 connected by a belt 6 to cut the bottom of the flexible container.

  Further, proximity switches 7 are attached to both ends of the rotation stroke of the cutting teeth 4, and the rotating body 3 automatically stops at those portions. The stroke from the beginning to the end of the rotation is about 3/4 of the flexible container depositing plate, and the part is cut while leaving a part of the bottom of the flexible container. This is because when the flexible container is lifted after discharging the material therein, it is lifted together so that the fragments of the flexible container are not mixed into the material.

The operation method of this device is as follows (1) to (3).
(1) Place the flexible container on the bank 2 with a crane or the like.
(2) The drive motor 5 is activated to rotate the rotating body.
(3) After the rotating body 3 automatically stops, the flexible container is lifted, so that the material can be reliably put into the hopper 1.

  The flexible container storage 2 regulates the level of the bottom of the flexible container so that the cutting teeth 4 can bite stably. In particular, when the flow rate of the flexible container contents is low, the bite of the cutting teeth 4 requires less power and the cutting teeth 4 are less damaged, so the positional relationship between the flexible container storage 2 and the cutting teeth 4 is important. It becomes.

  In the present invention, the rotator 3 only needs to have a structure that can rotate around the flexible container deposit base 2. In the present embodiment, the rotating body 3 is placed on the plurality of load receiving rollers 9 attached to the flexible container depositing base 2, but for example, the flexible container depositing base 2 and the rotating body 3 may be connected by a swivel bearing. However, it is not preferable that powder enters the roller portion or the bearing portion, and it is desirable to seal the contact portion between the flexible container storage 2 and the rotating body 3 with a rubber plate or the like.

  In this embodiment, the drive motor 5 and the rotating body 3 are connected by the belt 6, but may be connected by a chain or the like, or may be connected by a shaft or the like. A cover 8 is attached so that the powder material is not applied to the belt 6.

  According to the present invention, even when discharging a flexible container containing a material having a very low fluidity such as kneaded clay with a simple structure, the bottom of the flexible container can be opened widely, and safe and smooth discharge is possible.

  It is a top view of one example of the present invention.   It is a side view of the present invention.   It is the schematic of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hopper 2 Flexible container deposit board 3 Rotating body 4 Cutting teeth 5 Drive motor 6 Belt 7 Proximity sensor 8 Belt cover 9 Load roller

Claims (2)

  In a facility that supplies materials with a flexible container bag (hereinafter referred to as “flexible container”), a flexible container bag is installed on the upper part of the receiving hopper, and a rotatable rotating body with cutting teeth attached to the flexible container deposit box is attached. A flexible container opening device characterized by cutting a flexible container bottom by rotating a body and opening the flexible container.   2. The flexible container opening device according to claim 1, wherein the rotating body automatically stops at a position where the rotational body rotates more than 1/2 of the flexible container bottom and less than the entire circumference, and cuts the flexible container bottom by a certain amount.

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