JP2936050B2 - Bag breaking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag breaking machine for breaking a bag for storing solids such as bottles and cans.

[0002]

2. Description of the Related Art Waste discharged from ordinary households is
It is divided into combustibles and non-combustibles, and each is stored in a bag and discharged. At the time of collection and disposal, combustibles can then be dumped in an incinerator and incinerated, but non-combustibles, for example, cans and bottles are mixed, and resources such as cans are collected and recycled. Use may be desired. in this case,
When using a normal bag-breaking device that simply rotates the cutting blade, a bag or the like may be wound around the cutting blade or rotating body, hindering continuous operation, and the cutting blade may be damaged by solid matter stored therein. Therefore, usually, a method has been adopted in which the bag body is broken manually and the reusable material is taken out.

[0003] However, this bag breaking method requires considerable trouble,
It is inefficient and unsanitary. In view of this, the present inventor has previously proposed a bag breaking machine for automatically breaking a bag (Japanese Patent Application No. 6-248608).

The outline is shown in FIG. This bag breaking machine 5
Numeral 0 includes a rotating cutting blade 51, a pressing plate 52 positioned opposite to the cutting blade 51, and a guide plate 53 provided at an angle above the cutting blade 51. The cutting blade 51 includes a support shaft 5
4, a mounting disk 55 is mounted at intervals, and cutting blades 56 are radially mounted on the mounting disk 55. This cutting blade 56 has a tip formed in a short and small knife shape curved in an arc shape. Reference numeral 57 denotes a sprocket wheel, which is driven by appropriate means.

[0005] The cutting blade 51 is provided with a guide plate 58 for covering the same. The guide plate 58 has a U-shaped cross section in which the center portion is an arc-shaped portion concentric with the support shaft 54,
A notch 58a is formed at a position facing the cutting blade 56, and the cutting blade is made to protrude at the arc-shaped portion of the guide plate 58 so that the supplied bag body W is broken by the rotation of the cutting blade. is there.

The holding plate 52 includes a movable inclined plate 61 which is swingably supported by a pin 60, and a movable inclined plate 61.
And a spring 62 for urging the free end of the blade toward the cutting blade 51.
The ammunition 62 is connected to the movable inclined plate 61 by a connecting plate 63. The ammunition 62 is constituted by an elevating shaft 65 urged downward by a spring 64. The free end of the movable inclined plate 61 is held at a position at an appropriate distance from the cutting blade 51. In the figure, 66 and 67 are elastic plates attached to the holding plate 52 and the guide plate 53, respectively, and 68 is a discharge conveyor.

[0007]

However, according to this configuration, the cutting blade 56 has an effect that it can be easily inserted into the bag and the bag can be reliably broken. When the cutting blade 56 is rotated, the cutting blade 51 may be pushed into the notch 58a of the guide plate 58 and clogged. Further, the cutting edge is sharp and may be damaged by a solid substance such as a bottle can stored in the bag body.
For these reasons, it is necessary to stop the operation to remove the bag breakage, or to replace the cutting edge, which causes problems such as hindering the continuous operation. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to prevent a broken bag from being stuck together. Another object of the present invention is to facilitate repair of a cutting blade when it is broken by a solid matter in the bag body.

[0008]

In order to achieve the above object, a bag breaking machine according to the present invention comprises a rotating cutting blade, a presser plate positioned opposite to the cutting blade, and a cutting plate which is inclined above the cutting blade. And a guide plate that covers the cutting blade with a circular arc at the center, supports the supplied bag body with the holding plate and the guide plate, breaks the bag with the rotating cutting blade, and discharges the bag downward. In the bag breaking machine, the cutting blade is
It comprises a mounting disk mounted on the rotating support shaft at a predetermined interval in the axial direction, and a cutting blade mounted on the mounting disk. The cutting blade is a disk-shaped cutting blade having a blade portion formed on the outer periphery. The gist of the invention is that the portion is mounted so as to protrude from the mounting disk, and is protruded from the guide plate at the central arc-shaped portion of the guide plate, so that the supplied bag body is broken by the opposing holding plate. .

In this case, it is preferable that a plurality of the disk-shaped blades are mounted on the rotating disk at regular intervals.

Further, it is preferable that the disk-shaped cutting blade is rotatably fixed on the mounting disk so that a cutting portion protruding from the mounting disk can be selected.

[0011]

[Operation] By making the cutting blade into a disc shape, the bag break does not cling to the cutting blade. Further, when the cutting blade is worn or damaged, it is easy to rotate the cutting blade to make a new cut portion protrude from the mounting disk.

[0012]

1 to 5 relate to an embodiment of the present invention. Except for the rotating cutting blade 2, the bag breaking machine 1 has the same structure as that of the above-described structure except for the rotating cutting blade 2, the pressing plate 3, the guide plate 4 provided above the cutting blade 2, and the cutting blade. 2 is provided with a guide plate 5.

The holding plate 3 has a fixed plate 10 mounted vertically on the frame F, a movable inclined plate 12 whose upper part is supported by pins 11, and a free end of the movable inclined plate 12 biasing the free end of the movable inclined plate 12 toward the cutting blade 2. And an elastic plate 14 such as a rubber plate that covers the front surface of the movable inclined plate 12. The ammunition 13 is attached to the movable inclined plate 12 via the connecting plate 15 and has the same structure as the conventional example mainly including the spring 16 for urging downward and the elevating shaft 17, but is not limited thereto. is not. Although not shown, the biasing position of the movable inclined plate 12 toward the cutting blade 2 is held at a position where there is an appropriate distance from the cutting blade 2.

The cutting blade 2 is mounted on a support shaft 20 by a distance piece 21 with a plurality of mounting disks 22 at predetermined intervals.
Are mounted at equal intervals, and a cutting blade 23 is mounted on the mounting disk 22. This cutting blade 23 has a cutting blade portion 23a on the outer periphery.
Preferably, a plurality (three in the illustrated example) is mounted on the mounting disk 21 at equal intervals and a part thereof is projected from the mounting disk 22. 25 is a fixing bolt 26
Shows the insertion slot. A plurality of, for example, four, fixing bolt insertion slots 25 are formed around the center of the cutting blade 23, and the cutting blade 23 is rotatably mounted on the mounting disk 22 from the center thereof. Fix it. At this time, two fixing bolts 26 are used for mounting one cutting blade 23. Thereby, it becomes possible to finely adjust the amount of the cut portion protruding from the mounting disk 22.

The guide plate 5 has a notch 5a at a position facing the cutting blade 23, and a U-shaped cross section 5b at the center near the mounting disk 22. Frame F is fixed in place. The cutting blade 23 has a length protruding from the central curved portion 5 b of the guide plate 5.

The guide plate 4 is provided to be inclined above the cutting blade 2, and preferably has an elastic member 30 such as a rubber plate stretched on its surface. In the drawing, reference numeral 31 denotes a discharge conveyor laid below the cutting blade 2.

In the above configuration, the bag W to be processed is dumped on the guide plate 4. As a result, the bag W slides on the guide plate, falls, and is cut by the rotating cutting blade 23 of the cutting blade 2. At this time, a solid such as a bottle or a can is stored in the bag W. Therefore, the bag W is pushed out to the holding plate 3 side by the cutting blade 23 through this solid, and the movable plate The plate 12 rotates against the spring 16 of the ram 13 and discharges the bag W onto the discharge conveyor 31 below. At this time, since the cutting blade 23 is formed in a disk shape, there is no possibility that the broken bag is attached to the cutting blade.

Further, the cutting edge 23 may be worn or damaged due to long-term use. In this case, the fixing bolt 26 of the cutting blade 23 is removed, and the cutting blade is rotated by 90 ° in the illustrated example and fixed again, so that a new blade portion protrudes and the bag breaking operation can be started again. For this reason, it is preferable that the back cover 40 has a detachable structure.

[0019]

As described above, according to the present invention, when the bag to be supplied is broken, the cutting blade is a disc-shaped blade, so that the cut bag does not become entangled with the cutting blade. Therefore, it is possible to prevent a drawback such as stopping the conventional operation for removing the attached bag break. Further, by using two fixing bolts 26, it is possible to finely adjust the amount of the cut portion protruding from the mounting disk 22, and the cutting blade is rotatably mounted on the rotating disk, and the cutting edge is worn and damaged. In this case, a new blade can be obtained simply by rotating the cutting blade to protrude another cutting blade, so that the entire circumference of one cutting blade can be used effectively, and the blade can be repaired. Alternatively, there is an effect that replacement can be easily performed.

[Brief description of the drawings]

FIG. 1 is an overall vertical sectional view of a bag breaking machine of the present invention.

FIG. 2 is a longitudinal sectional view taken along line XX in FIG.

FIG. 3 is a front view of a cutting blade.

FIG. 4 is a partial side view of the cutting blade.

FIG. 5 is an overall vertical sectional view of a conventional bag breaking machine.

FIG. 6 is a longitudinal sectional view taken along line YY in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag-breaking machine 2 Cutting blade 3 Holding plate 4 Guide plate 5 Guide plate 20 Support shaft 22 Mounting disk 23 Cutting blade

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-84938 (JP, A) JP-A-6-126208 (JP, A) JP-A-6-35207 (JP, U) JP-A-54-208 21477 (JP, U) Japanese Utility Model Showa 54-21476 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B02C 18/00-18/44

Claims (3)

(57) [Claims] 1. A rotating cutting blade, a presser plate located opposite to the cutting blade, a guide plate inclined above the cutting blade, and a guide plate for covering the cutting blade with a circular arc at the center. In a bag-breaking machine provided with, and supporting a supplied bag body by a holding plate and a guide plate, breaking the bag by a rotating cutting blade and discharging the bag downward, the cutting blade has a predetermined interval in the axial direction on a rotating shaft. A mounting disk and a cutting blade mounted on the mounting disk, the cutting blade is a disk-shaped cutting blade having a blade portion formed on the outer periphery, a part of which is mounted so as to protrude from the mounting disk, A bag breaking machine characterized in that a central arc-shaped portion of the guide plate is made to protrude from the guide plate and the supplied bag body is broken by an opposing holding plate. 2. The bag breaking machine according to claim 1, wherein a plurality of disk-shaped cutting blades are mounted on the mounting disk at regular intervals. 3. The bag breaking machine according to claim 1, wherein the disk-shaped cutting blade is rotatably fixed on the mounting disk, and a cutting portion of the cutting blade protruding from the mounting disk can be selected. .