JP2017065793A - Flexible container bag breakage system and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible container breakage system capable of surely breaking a flexible container.SOLUTION: A flexible container breakage system comprises a fixing floor slab 10 on which a flexible container 1 is mounted. The fixing floor slab 10 comprises an opening part 11 so as to contain a bottom surface center part of the flexible container 1. A laser head 15 is provided for radiating a laser beam to the vicinity of an edge part of the opening part 11, and relatively moving along the edge part of the opening part 11, for cutting the bottom part of the flexible container 1. A movable floor slab 12 is provided on the opening part 11 for forming a floor surface during cutting by the laser beam. The movable floor slab 12 moves downward after the cutting, for discharging a content in the flexible container 1 through the opening part 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a flexible container breakage system (and method) used when taking out a stored item from a flexible container (also referred to as a flexible container bag) which is a bag-like packaging material for storage and transportation.
In the present specification, regarding the term “flexible container”, the “flexible container” that is generally established will be used as an abbreviation.

  The flexible container is suitable for storing and transporting powdery and granular materials, and can be stored from the upper opening, and the opening can be closed by a gusset portion. In addition, the flexible container has a strong loop-shaped suspension belt, and is suitable for lifting with a crane or the like.

As a flexible container bag breaking device for taking out the contents from the flexible container, there are the following devices.
In the flexible container bag breaking device (opening device) described in Patent Document 1, a knife body with an upper blade is fixed in an inverted V shape in a load receiving hopper, and the flexible container is rapidly lowered onto this to tear the bottom of the flexible container. Let

  The flexible container bag breaker (opening device) described in Patent Document 2 is provided with a flexible container depositing device at the upper part of the load receiving hopper, and a rotatable rotating body with a cutting blade attached at one place around the flexible container depositing device. The bottom of the flexible container is cut by rotating the rotating body, and the flexible container is opened.

Japanese Utility Model Publication No. 04-132017 JP 2009-096545 A

By the way, the removed soil and other removed materials (soil removed by decontamination and waste contaminated with radioactive substances) generated by decontamination are stored in a flexible container at a fixed volume and temporarily stored in a temporary storage area. It is stored in.
When such removed matter is carried from a temporary storage location to an intermediate storage facility and stored, it is necessary to break the flexible container and take out the contents for separation and volume reduction processing. For this reason, a bag breaking device is required.

However, since the bag breaking apparatus described in Patent Document 1 is based only on the weight of the flexible container, there is a problem that the certainty of bag breaking is inferior.
Further, as shown in FIGS. 11A and 11B, a front view and a bottom view of a general flexible container, two hanging belts are sewn on the flexible container, and two belts are sewn on the bottom of the flexible container. Are crossed and doubled. A thick belt is double-sewn at this belt intersection, and it cannot be easily cut.
Therefore, in the case of trying to cut from the bottom center part like the bag breaking device described in Patent Document 1, or to try to cut in a form crossing the bottom center part, the belt crossing part must be cut. As a result, reliable cutting may be difficult.

Moreover, the bag breaking apparatus described in Patent Document 2 can avoid a belt crossing portion by rotating a cutter (cutting blade) in the circumferential direction on the bottom surface of the flexible container to cut it into a ring shape or a C shape. There are advantages.
However, in the method of rotating the cutter, even if the cutter is rotated, if the flexible container bag escapes or the flexible container bag is wrinkled, the blade does not go inside, and as a result, the flexible container is broken. There is a problem that it may not be possible to bag.
In addition, the removed matter stored in the flexible container includes hard items such as concrete pieces and metal pieces. Even in the case of removed soil, the soil quality at the location where it was collected, or being left in the flexible container for a long time, is compacted in the flexible container and may be extremely hard. In such a case, it is considered that reliable cutting becomes difficult with the method of rotating the cutter.

  In view of such a situation, the present invention can more reliably break the flexible container, and is suitable for crushing a flexible container that contains a removed material such as removed soil generated by decontamination. It is an object to provide a bag system (and method).

  In order to solve the above-described problems, a flexible container bag breaking system according to the present invention includes a fixed floor slab on which a flexible container is placed, and an opening formed in the fixed floor slab so as to include a bottom center portion of the flexible container. And a laser head that relatively moves along the edge of the opening and cuts the bottom of the flexible container while irradiating a portion of the flexible container near the edge of the opening with laser. The

The laser head may be arranged below the fixed floor slab so as to irradiate the laser upward, and further irradiate the laser obliquely upward from the radially outer side to the inner side of the opening. It is good also as a structure.
Alternatively, on the condition that the opening is set to a size such that the bottom of the flexible container is fitted and locked, the laser head is disposed above the fixed floor slab, A configuration in which the laser is irradiated obliquely downward from the radially outer side to the inner side can also be adopted.

  The flexible container bag breaking system according to the present invention is arranged in the opening and forms a floor surface together with the fixed floor slab at the time of cutting by the laser, moves in a direction away from the flexible container after cutting, and the container of the flexible container It is good to further comprise the movable floor slab which discharges through the opening. When the laser head is disposed below the fixed floor slab, the movable floor slab passes between the inner peripheral surface of the opening and the outer peripheral surface of the movable floor slab when the floor surface is formed. A gap (slit) is formed.

According to the present invention, the reliability of the broken bag can be improved by using a laser head and cutting the bottom portion of the flexible container with the laser while avoiding the belt crossing portion. In particular, the laser can be broken regardless of the contents of the flexible container, and the maintenance as in the case of using a cutter (cutting blade) becomes unnecessary.
Further, the flexible container can be positioned by placing the flexible container on the fixed floor slab. Even if the fixed floor slab has an opening, the flexible container can be positioned at least at the edge of the opening. Therefore, it is relatively easy to determine the focal point (spot) of the laser by moving the laser along the edge of the opening while irradiating the laser near the edge of the opening of the flexible container. Therefore, reliable bag breaking with a laser becomes possible.

  Furthermore, by using a movable floor slab together, the positioning of the flexible container during laser cutting is more reliable, and the discharge of the flexible container in the middle of cutting is suppressed and the shape of the flexible container is prevented from changing. it can.

  Therefore, by using the flexible container bag-breaking system according to the present invention, it is possible to reliably break the flexible container that contains the removed material generated by decontamination, and it is necessary to process a large number of flexible containers. Since radioactive materials are handled, it is possible to improve the efficiency of work that is basically performed in an unattended state.

The front view of the flexible container bag-breaking system which shows 1st Embodiment of this invention Bottom view of the FIBC bag breaking system Process diagram of FIBC bag-breaking system Front view of a flexible container bag breaking system showing a second embodiment of the present invention The front view of the flexible container bag breaking system which shows 3rd Embodiment of this invention Main part enlarged view of 3rd Embodiment Front view of a flexible container bag-breaking system showing a fourth embodiment of the present invention Bottom view of the fourth embodiment Front view of a flexible container bag-breaking system showing a fifth embodiment of the present invention Front view of a flexible container bag-breaking system showing a sixth embodiment of the present invention Front view and bottom view of general FIBC

Hereinafter, embodiments of the present invention will be described in detail.
1 to 3 show a first embodiment of a flexible container bag breaking system according to the present invention. FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG.

  The flexible container 1 according to the present embodiment is cylindrical and is filled with a removed material such as removed soil generated by decontamination, and is carried from a temporary storage place such as a temporary storage place to an intermediate storage facility by a vehicle. In the intermediate storage facility, the flexible container 1 is broken to take out the contents, while the broken flexible container 1 (bag) is separately collected.

  The flexible container bag breaking system includes a fixed floor slab 10 on which the flexible container 1 is placed.

  The flexible container 1 is suspended from a hook 3 at its lower end by a wire 2 of an electric hoist (not shown) that can move along a moving rail provided on the ceiling of the bag-breaking facility in a state in which the contents are accommodated. Moves down. Then, when the position reaches the upper position of the fixed floor slab 10, it is lowered together with the wire 2 and placed on the center of the upper surface of the fixed floor slab 10. In the mounted state, in order to collect the flexible container 1 (bag) after the bag breakage, the suspension belt is held in a certain tension state so that the suspension belt is not detached from the hook 3.

  A circular opening 11 is formed at the center of the fixed floor slab 10 so as to include the bottom center of the flexible container 1. That is, the opening 11 is formed to be larger than the central portion (belt crossing portion) of the bottom surface of the flexible container 1 so that the belt crossing portion is accommodated in the opening 11. The opening 11 is also formed to be smaller than the outer diameter of the flexible container 1 so as not to hinder the flexible container 1 from being placed and held.

  A circular movable floor slab 12 is disposed in the opening 11 of the fixed floor slab 10. Here, between the inner peripheral surface of the opening 11 of the fixed floor slab 10 and the outer peripheral surface of the movable floor slab 12, a gap (slit) 13 having a width of about 10 mm for laser passage is formed in an annular shape.

  The movable floor slab 12 can be moved up and down by a drive mechanism 14 such as a hydraulic cylinder, and is positioned substantially flush with the fixed floor slab 10 to form a floor with the fixed floor slab 10, and below the fixed floor slab 10. It is possible to move to a position (dotted line position shown in the figure) where the user can evacuate.

A laser head 15 is arranged below the gap 13 between the fixed floor slab 10 and the movable floor slab 12 so as to be movable along the annular gap 13.
The laser head 15 irradiates the laser upward, and the laser passes through the gap 13 and irradiates the bottom of the flexible container 1. The laser head 15 also moves in the horizontal plane along the gap 13 while irradiating the laser.
The laser head 15 is connected to a laser generation source (not shown) through an optical system having a flexible optical fiber or a rotating mirror.

  The moving mechanism of the laser head 15 is configured to include a rail 16 that is annularly disposed on the lower surface of the fixed floor slab 10 so as to surround the opening 11, and a traveling body 17 that can travel along the rail 16. The traveling body 17 supports the laser head 15 via the position adjusting mechanism 18. The laser head 15 can move along the gap 13 by the movement of the traveling body 17 along the rail 16.

The position adjusting mechanism 18 can change the mounting position of the laser head 15 to the traveling body 17 in the vertical direction, so that the focal position of the laser head 15 with a constant focal length matches the bottom of the flexible container 1. Fine adjustments can be made. Therefore, the position adjustment mechanism 18 for adjusting the attachment position functions as a focus position adjustment mechanism.
The laser head 15 has a focus lens for condensing the laser inside thereof and converges the laser. This is to increase the energy density and perform reliable cutting. The focus lens is selected so that the focal length is between the focus lens and the convergence position (spot), and the bottom of the flexible container 1 is a spot, and the vertical mounting position is adjusted.

Next, the operation of the flexible container bag breaking system according to this embodiment will be described with reference to the process chart of FIG.
Since this system handles radioactive substances, it is basically automatically operated in an unmanned state and in a state where it can be remotely operated from the outside, and the operating state is monitored by a monitoring camera.

  As shown in FIG. 3A, the flexible container 1 is placed on the center of the upper surface of the fixed floor slab 10 by being hung by the hook 3 at the tip of the wire 2. At this time, the movable floor slab 12 is moving upward and is flush with the fixed floor slab 10 in the opening 11 of the fixed floor slab 10, and the flexible container 1 includes the fixed floor slab 10 and the movable floor slab 12. Placed on top. In this state, the bottom of the flexible container 1 is pressed against the fixed floor slab 10 and the movable floor slab 12 by its own weight, and is in a flat state.

From such a mounted state, the laser head 15 is moved along the gap 13 while irradiating the bottom of the flexible container 1 with the laser head 15 through the gap 13 between the fixed floor slab 10 and the movable floor slab 12. . Thereby, the bottom part of the flexible container 1 is cut | disconnected circularly. As a result, a hole is formed in the bottom of the flexible container 1, and the contents can be discharged.
At this time, the laser head 15 may be rotated by 180 ° or more and less than 360 °. More specifically, it is rotated while leaving 20 to 30 °. As a result, the bottom of the flexible container 1 is cut into a C-shape, and the contained material can be discharged. On the other hand, the bag of the flexible container 1 itself can be prevented from being cut out and mixed and discharged.

After cutting by the laser head 15, the movable floor slab 12 is moved downward as shown in FIG. Thereby, the opening part 11 of the fixed floor slab 10 opens, and the accommodation of the flexible container 1 falls through the opening part 11, and is discharged | emitted.
A hopper (not shown) is arranged below the fixed floor slab 10 and the movable floor slab 12, and the contents discharged from the flexible container 1 are collected by the hopper.

  After the contents are discharged, as shown in FIG. 3 (C), only the bag of the flexible container 1 (including the above-mentioned uncut portion) left behind on the hook 3 at the tip of the wire 2 is left. 2 is lifted and moved, and the flexible container 1 that has been broken is collected at an appropriate position. This can be sent to incineration as a combustible material.

  In addition, as shown in FIG. 1, in order to keep the mounting state of the flexible container 1 on the fixed floor slab 10 more constant, a pressing mechanism 20 that presses the flexible container 1 from both sides may be provided. In the case of cutting by laser, no external force is applied to the flexible container by cutting, so even if the pressing mechanism 20 is provided, it is only necessary to guide the flexible container 1 in order to keep the position constant. Further, the holding mechanism 20 may be used to push in after the cutting to push out the contents. In addition, if the lower side (hopper side) of the fixed floor slab 10 is set to a negative pressure, the pushing-out effect of the contents is further enhanced by the action of atmospheric pressure.

The flexible container bag breaking system according to the present embodiment includes a fixed floor slab 10 on which the flexible container 1 is placed, an opening 11 formed in the fixed floor slab 10 so as to include a bottom center portion of the flexible container 1, and the flexible container 1. A laser head 15 that relatively moves along the edge of the opening 11 and cuts the bottom of the flexible container 1 while irradiating a laser near the edge of the opening 11 (inside the edge). Is done.
According to this, the certainty of the broken bag can be improved by cutting the bottom portion of the flexible container 1 with the laser avoiding the belt crossing portion. In particular, the laser can break the bag regardless of the contents of the flexible container 1, and maintenance is not required as in the case of using a cutter (cutting blade).

  In the flexible container bag breaking system according to the present embodiment, the laser head 15 is disposed below the fixed floor slab 10 and irradiates the laser upward. Thereby, it becomes possible to irradiate a laser with the shortest distance with respect to the bottom part of the flexible container 1, and a reliable cutting | disconnection is attained.

In addition, the flexible container bag breaking system according to the present embodiment is arranged in the opening 11 of the fixed floor slab 10 to form a floor surface together with the fixed floor slab 10 at the time of cutting with a laser, and moves in a direction away from the flexible container 1 after cutting. The movable floor slab 12 is further configured to discharge the contents of the flexible container 1 through the opening 11, and the movable floor slab 12 includes an inner peripheral surface of the opening 11 and an outer periphery of the movable floor slab 12. A gap 13 through which the laser passes is formed between the surface and the surface.
According to this, by positioning the flexible container 1 with the fixed floor slab 10 and the movable floor slab 12, the positioning of the flexible container 1 at the time of cutting with a laser becomes more reliable. Therefore, by adopting a configuration in which the laser is moved along the gap 13 between the fixed floor slab 10 and the movable floor slab 12, it becomes easy to determine the focal position (spot) of the laser, and the laser energy is flexibly controlled. Since it becomes easy to concentrate on 1, reliable bag breaking with a laser becomes possible.
Further, by positioning the flexible container 1 with the fixed floor slab 10 and the movable floor slab 12, it is possible to suppress the change in the shape of the flexible container 1 due to the start of discharge of the contents of the flexible container 1 in the middle of cutting. The cutting performance of the period can be maintained.
Further, since the bottom of the flexible container 1 is in close contact with the fixed floor slab 10 and the movable floor slab 12, even if the bottom of the flexible container 1 is burned by the laser, it does not spread.

However, it is also possible to carry out without providing the movable floor slab 12. In this case, positioning of the flexible container 1 is performed only by the fixed floor slab 10 having the opening 11. Even if the fixed floor slab 10 has an opening, the flexible container 1 is at least at the edge of the opening 11. Can be positioned. Therefore, by moving the laser along the edge of the opening 11 (for the purpose of the edge), it becomes relatively easy to determine the focal position (spot) of the laser, and reliable breakage by the laser becomes possible. .
In addition, since the flexible container 1 is in close contact with the fixed floor slab 10 at the edge of the opening 11, even if the bottom of the flexible container 1 is burned by the laser, it does not spread further.

  In the flexible container bag breaking system according to the present embodiment, the laser head 15 cuts the bottom of the flexible container 1 into a C shape. Thereby, the bag of the flexible container 1 itself can be prevented from being cut out and mixed and discharged, and all of the flexible containers 1 that have been broken can be sent to the incineration process as combustible materials.

The flexible container bag breaking system according to the present embodiment further includes a focal position adjustment mechanism (position adjustment mechanism 18) that can adjust the focal position (spot) of the laser. Thereby, fine adjustment of a focus position is attained.
For example, some of the flexible containers brought into the intermediate storage facility have been carried in another flexible container as they are because a flexible container bag has been damaged in a temporary storage area or the like. The flexible container brought in this way has a double bag. When breaking such a double bag flexible container, adjustment of the focal position by the position adjusting mechanism 18 is effective.

  FIG. 4 shows a second embodiment of the flexible container bag breaking system according to the present invention. In the second embodiment, elements corresponding to those in the first embodiment are denoted by the same reference numerals to simplify the description.

In the second embodiment, the laser head 15 is arranged below the fixed floor slab 10 in the radial direction of the opening 11 when irradiating the vicinity of the edge (inside the edge) of the opening 11 in the flexible container 1 with a laser. A laser is irradiated obliquely upward from the outside to the inside.
In this case, the inner peripheral surface of the opening 11 of the fixed floor slab 10 has a tapered surface tapered upward, and the outer peripheral surface of the movable floor slab 12 has a tapered surface tapered upward.

  According to the second embodiment, the laser head 15 is arranged below the fixed floor slab 10 and irradiates the laser obliquely upward from the radially outer side to the inner side of the opening 11. The head 15 can be disposed so as to be retracted from directly below the opening 11 from which the contents of the flexible container 1 are discharged. As a result, it is possible to avoid the container from directly hitting the laser head 15 when the container of the flexible container 1 is discharged.

  FIG. 5 shows a third embodiment of a flexible container bag breaking system according to the present invention. FIG. 6 is an enlarged view of a main part. In the third embodiment, the same reference numerals are assigned to elements corresponding to those in the first embodiment, and the description is simplified.

In 3rd Embodiment, the opening part 11 of the fixed floor slab 10 is set to the magnitude | size which the bottom part of the flexible container 1 fits and is latched. That is, the bottom portion of the flexible container 1 is a corner rounded portion between the bottom surface and the side surface, and is fitted into the opening 11 and locked.
The laser head 15 is disposed above the fixed floor slab 10 when irradiating the vicinity of the edge (upper edge) of the opening 11 in the flexible container 1, from the radially outer side to the inner side of the opening 11. Irradiate the laser diagonally downward.
In this case, the inner peripheral surface of the opening 11 of the fixed floor slab 10 is a tapered surface tapered toward the top, and the edge of the opening 11 on the upper surface side of the fixed floor slab 10 (E in FIG. 6). The flexible container 1 can be positioned with The laser passes inside this edge E. The rail 16 is annularly disposed on the upper surface of the fixed floor slab 10 so as to surround the opening 11. Although the movable floor slab 12 is omitted, it may be adopted.

  According to the third embodiment, the opening 11 of the fixed floor slab 10 is set to a size that allows the bottom of the flexible container 1 to be fitted and locked, and the laser head 15 is disposed above the fixed floor slab 10. Since the laser is irradiated obliquely downward from the radially outer side to the inner side of the opening 11, the laser head 15 is retracted from the lower side of the fixed floor slab 10 from which the contents of the flexible container 1 are discharged. Can be made. Thereby, the laser head 15 is hardly affected by the contents discharged from the flexible container 1, and the cutting function can be stably maintained.

  As mentioned above, by using a laser-type FIBC bag breaking system, it is possible to reliably break the FIBC containing the removed material generated by decontamination, and it is necessary to process a large number of FIBC In addition, since radioactive materials are handled, it is possible to improve the efficiency of work that is basically performed in an unattended state.

Next, an embodiment in which a laser head and a cutter (cutting blade) are provided will be described.
Some flexible containers have a resin cloth lined with aluminum foil to prevent water leakage. Lasers (especially carbon dioxide lasers) are not good at metals with high reflectivity. Therefore, in the case of flexible containers with aluminum foil, the resin foil may be cut, but the aluminum foil may not be cut.
In consideration of such a case, in the fourth to sixth embodiments, a laser head and a cutter (cutting blade) are provided side by side, and these can be selectively used.

  7 and 8 show a fourth embodiment of a flexible container bag breaking system according to the present invention, FIG. 7 is a front view, and FIG. 8 is a bottom view. 4th Embodiment adds a mechanical cutter with respect to 1st Embodiment (FIG. 1, FIG. 2), attaches | subjects the same code | symbol to the element corresponding to 1st Embodiment, and simplifies description. .

In the fourth embodiment, the cutter 31 is provided by being guided by the rail 16 for guiding the laser head 15.
The cutter 31 is capable of cutting the bottom portion of the flexible container 1 by cutting the blade 31a from the lower side into a portion of the flexible container 1 in the vicinity of the edge of the opening 11 and moving relative to the edge of the opening 11. . The cutting edge 31a can move in the piercing direction, and moves away from the flexible container 1 by moving in the direction opposite to the piercing direction except during use.

  Therefore, the laser head 15 is selectively used when breaking a normal flexible container, and the cutter 31 is selectively used when breaking a flexible container with an aluminum foil. In this manner, the laser head 15 or the cutter 31 is selectively used in accordance with the flexible container to be broken, and the broken bag is made more reliable.

  In the fourth embodiment (FIGS. 7 and 8), the laser head 15 and the cutter 31 are drawn 180 degrees out of phase, but this is the reason for drawing, and they are arranged side by side at the same position. You may rotate it. The same applies to fifth and sixth embodiments described later.

  FIG. 9 shows a fifth embodiment of a flexible container bag breaking system according to the present invention. 5th Embodiment adds a mechanical cutter with respect to 2nd Embodiment (FIG. 4), attaches | subjects the same code | symbol to the element corresponding to 2nd Embodiment, and simplifies description.

In the fifth embodiment, the cutter 32 is provided by being guided by the rail 16 for guiding the laser head 15.
The cutter 32 can cut the bottom of the flexible container 1 by moving the cutting edge 32a obliquely from the lower side into a portion of the flexible container 1 near the edge of the opening 11 and moving relative to the edge of the opening 11. It is. The cutting blade 32a can move in the piercing direction, and moves away from the flexible container 1 by moving in the direction opposite to the piercing direction except during use.
In this case as well, the laser head 15 or the cutter 32 is selectively used in accordance with the flexible container to be broken to make the broken bag more reliable.

  FIG. 10 shows a sixth embodiment of a flexible container bag breaking system according to the present invention. 6th Embodiment adds a mechanical cutter with respect to 3rd Embodiment (FIG. 5), attaches | subjects the same code | symbol to the element corresponding to 3rd Embodiment, and simplifies description.

In the sixth embodiment, the cutter 33 is provided by being guided by the rail 16 for guiding the laser head 15 on the upper side of the fixed floor slab 10.
The cutter 33 is capable of cutting the bottom portion of the flexible container 1 by having the cutting edge 33a obliquely pierced from the upper side into a portion of the flexible container 1 near the edge of the opening 11 and moving relative to the edge of the opening 11. is there. The cutting blade 33a can move in the piercing direction, and moves away from the flexible container 1 by moving in the direction opposite to the piercing direction except during use.
In this case as well, the laser head 15 or the cutter 33 is selectively used in accordance with the flexible container to be broken to make the broken bag more reliable.

  According to said 4th-6th embodiment, according to the specification of flexible container 1 for bag breaking, laser bag 15 or cutters 31-33 (cutting blades 31a-33a) can be used properly to ensure bag breaking. It can be.

Next, an embodiment using two types of lasers will be described.
For example, a carbon dioxide laser can easily cut resin, but is not good at metals such as aluminum. In contrast, a fiber laser can cut a metal such as aluminum relatively easily, but in the case of a resin, it is difficult to cut because re-welding occurs.
Therefore, as the laser head, the first laser head that irradiates the carbon dioxide laser and the second laser head that irradiates the fiber laser are provided, and these two types of laser heads are selected according to the flexible container to be broken. Can be used.
Although illustration of the embodiment using two types of lasers is omitted, in FIGS. 7 and 8, 15 may be the first laser head and 31 may be the second laser head. In FIG. 9, 15 may be a first laser head and 32 may be a second laser head. In FIG. 10, 15 may be the first laser head and 33 may be the second laser head.

Next, it supplements about the focal distance of a laser.
In general, a conventional laser for cutting uses a lens (f <60 mm) having a short focal length. In this case, the depth of focus at which cutting is possible is only about ± several mm. For this reason, it may not be possible to cope with unevenness on the surface of the flexible container.
Therefore, although not very common, if a long focus lens (f> 100 mm class, for example, about 600 mm) is used, the depth of focus can be increased to about ± 200 mm.
Therefore, by using a long focal lens of 100 mm or more, it becomes possible to cut a flexible container having an uneven surface without any problem, and a focus position adjusting mechanism is not necessary.

  The illustrated embodiments are merely examples of the present invention, and the present invention is not limited to those directly described by the described embodiments, and various improvements and modifications made by those skilled in the art within the scope of the claims. Of course, it encompasses changes.

For example, a plurality of laser heads 15 are arranged on the moving path, and are configured to share and cut, so that each moving distance can be shortened.
Further, the opening 11 of the fixed floor slab 10 may not be circular, and may be, for example, a quadrangle. In this case, since the laser head 15 is moved along the inner periphery of the opening 11, the movement path is not circular but is, for example, a quadrangle (considering uncut portions). In this case, if a plurality of laser heads 15 are moved in a straight line, each moving mechanism can be simplified.

  Moreover, in the said embodiment, although the laser head 15 was moved along the inner periphery of the opening part 11 of the fixed floor slab 10, since it should just move relatively, the laser head 15 (and cutters 31-33) The flexible container 1 may be rotated together with the fixed floor slab 10 (and the movable floor slab 12). In this case, it is preferable to rotate the flexible container 1 together while pressing the flexible container 1 against the fixed floor slab 10 from above.

  Further, in the above embodiment, when the movable floor slab 12 is retracted in the direction away from the flexible container 1, the movable floor slab is retracted downward. It is good also as a structure which saves in a direction.

  Moreover, in the said embodiment, although the flexible container 1 was demonstrated as cylindrical shape, the flexible container bag breaking system which concerns on this invention can also be used for the broken bag of the flexible container shape | molded in the rectangular parallelepiped shape (box shape).

DESCRIPTION OF SYMBOLS 1 Flexible container 2 Wire 3 Hook 10 Fixed floor slab 11 Opening part 12 Movable floor slab 13 Gap 14 Drive mechanism 15 Laser head 16 Rail 17 Running body 18 Position adjustment mechanism 20 Holding mechanism 31, 32, 33 Cutter 31a, 32a, 33a Cutting blade

Claims (10)

A fixed floor slab on which a flexible container is placed;
An opening formed in the fixed floor slab so as to include a bottom center portion of the flexible container;
A laser head that relatively moves along the edge of the opening while irradiating a portion of the flexible container near the edge of the opening, and cuts the bottom of the flexible container;
A flexible container bag breaking system.   The flexible container bag breaking system according to claim 1, wherein the laser head is disposed below the fixed floor slab and irradiates the laser upward.   The flexible container bag breaking system according to claim 2, wherein the laser head irradiates the laser obliquely upward from the radially outer side to the inner side of the opening. A floor surface is formed together with the fixed floor slab at the time of cutting by the laser disposed at the opening, and after cutting, moves in a direction away from the flexible container, and discharges the contents of the flexible container through the opening. Further comprising a movable floor slab,
The said movable floor slab forms the gap | interval which the said laser passes between the inner peripheral surface of the said opening part, and the outer peripheral surface of the said movable floor slab at the time of floor surface formation, The Claim 2 or characterized by the above-mentioned. The flexible container bag breaking system according to claim 3. The opening is set to a size such that the bottom of the flexible container is fitted and locked,
2. The flexible container breakage according to claim 1, wherein the laser head is disposed above the fixed floor slab and irradiates the laser obliquely downward from the radially outer side to the inner side of the opening. Bag system.   The flexible container bag breaking system according to any one of claims 1 to 5, wherein the laser head cuts the bottom of the flexible container into a C shape.   The flexible container bag breaking system according to any one of claims 1 to 6, further comprising a focal position adjusting mechanism capable of adjusting a focal position of the laser. It further comprises a cutter that pierces a portion of the flexible container near the edge of the opening, moves relative to the edge of the opening, and cuts the bottom of the flexible container,
The flexible container bag breaking system according to any one of claims 1 to 7, wherein the laser head and the cutter are selectively used. The laser head is provided in two types, a first laser head for irradiating a carbon dioxide laser and a second laser head for irradiating a fiber laser.
The flexible container bag breaking system according to any one of claims 1 to 8, wherein the first laser head and the second laser head are selectively used.   A flexible container containing a removed material generated by decontamination is broken using the flexible container breaking bag system according to any one of claims 1 to 9. Container bag breaking method.