JP2936058B2 - 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 containing solid matter such as bottles.

[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. When disposing of these wastes, combustibles can be directly discarded in an incinerator and incinerated, but non-combustibles include, for example, bottles and cans. It may be desirable to collect and reuse such resources. In this case, a method is usually adopted in which the bag is broken manually and a reusable product is taken out.

[0003] However, this manual bag breaking method requires considerable labor, is inefficient, unsanitary and dangerous. In view of this problem, the present inventor has proposed a bag breaking machine that automatically breaks a bag first.

The outline is shown in FIG. This bag breaking machine 5
Reference numeral 0 includes a rotary cutter 51, a pressing member 52 positioned opposite to the rotary cutter 51, and a guide plate 53 that is provided to be inclined above the rotary cutter 51. Rotating cutter 51
In this example, a plurality of mounting disks 55 are mounted at equal intervals on a support shaft 54, and cutting blades 56 are mounted on the mounting disks 55. The cutting blades 56 are formed in a disk shape having a blade portion 56a formed on the outer periphery. Preferably, a plurality (three in the illustrated example) of the cutting disks 56 are arranged at regular intervals, and a part of the cutting blades 56 is formed from the mounting disk 55. Protrude and mount.

[0005] The rotary cutter 51 is provided with a guide plate 60 that covers the rotary cutter 51. The guide plate 60 has a U-shaped cross section with a central portion formed in an arc shape, and forms a cutout portion 60 a at a position facing the cutting edge 56. The bag W is broken by rotating the rotary cutter 51.

The holding member 52 includes a movable inclined plate 71 supported by a pin 70 so as to be swingable, and the movable inclined plate 71.
And a spring 72 that urges the free end of the roller toward the rotary cutter 51. The spring 72 is connected to the movable inclined plate 71 via a connection plate 73. Then, the free end of the movable inclined plate 71 is held at a position at an appropriate distance from the rotary cutter 51.
In the drawing, reference numeral 74 denotes a rubber plate stretched on the movable inclined plate 71,
Reference numeral 75 denotes a discharge conveyor.

[0007]

However, with this configuration, the holding member 52 has a weak ability to support the supplied bag, and the bag is often not broken by the rotary cutter. It may be discharged as it is. The present invention has been made in view of the above problems, and makes it easy to break a supplied bag.
It is an object of the present invention to provide a bag breaking machine that can be performed reliably.

[0008]

In order to achieve the above object, a bag breaking machine according to the first aspect of the present invention comprises a rotary cutter having a cutting blade, a pressing member opposed to the rotary cutter, and a central portion. And a guide plate that covers the rotary cutter in an arc shape, and while the supplied bag body is supported by the pressing member and the guide plate, the bag is broken by the rotary cutter and discharged downward. The pressing member includes an endless band extending between a pair of drive shafts and a driven shaft, and a hook claw for engaging a bag body with the endless band, and swings about the upper drive shaft. While movably supporting, the free end of the lower end is urged toward the rotating cutter side, the supplied bag body is hooked by a hooking claw, and the bag is broken by the rotating cutter while shifting at a predetermined speed. It is characterized by having done.

The bag breaking machine according to the first aspect of the present invention having the above-described structure can surely break the bag by the rotary cutter while holding the bag body by the hook.

[0010] The bag breaking machine of the second aspect of the present invention provides a rotary cutter having a cutting blade, a pressing member positioned opposite to the rotary cutter, and a guide plate for covering the rotary cutter with a central portion in an arc shape. In a bag breaking machine configured to break a bag with a rotary cutter and discharge the bag downward while supporting a supplied bag body with a holding member and a guide plate, the holding members form a pair up and down. A plurality of endless belts spanned between the drive shaft and the driven shaft, a hook for hooking a bag to the endless band, and a rubber belt disposed between the endless bands; In addition to supporting the center swingably,
The free end of the lower end is urged toward the rotating cutter, and the rubber belt is
On the receiving surface side of the supplied bag body, it is stretched so as to be flush with the endless band, and is separated from the endless band on the back surface side, and guided to a position protruding from the hooking claw, and supplied. The bag body is hooked by the hook claw, the bag is broken by the rotating cutter while moving at a predetermined speed, and the bag body hooked on the hook claw is detached at the separated position of the rubber belt on the back side of the pressing member. It is characterized in that it is made to be.

The bag breaking machine according to the second aspect of the present invention can reliably break the bag with the rotary cutter while holding the bag with the hook, and can also hold the bag with the hook. The body can be reliably removed.

A bag cutter according to a third aspect of the present invention provides a rotary cutter having a cutting blade, a pressing member positioned to face the rotary cutter, and a guide plate for covering the rotary cutter with an arcuate center portion. In a bag breaking machine configured to break a bag with a rotary cutter and discharge the bag downward while supporting a supplied bag body with a holding member and a guide plate, the holding members form a pair up and down. It is configured as a sub-cutter with an endless belt spanned between the drive shaft and the driven shaft, and a straight blade for hooking the bag to the endless band and breaking the bag, and is supported to be swingable about the upper drive shaft. In addition, the free end of the lower end is urged toward the rotating cutter side, the supplied bag body is hooked by the straight blade, and the bag is broken by the rotating cutter and the sub cutter while shifting at a predetermined speed. Features.

In the bag breaking machine according to the third aspect of the present invention having the above structure, the bag can be reliably broken from both sides by the rotary cutter and the sub cutter while holding the bag by the straight blade.

The fourth aspect of the present invention is a bag breaking machine, comprising: a rotary cutter having a cutting blade; a pressing member positioned to face the rotary cutter; and a guide plate for covering the rotary cutter with an arcuate center portion. In a bag breaking machine configured to break a bag with a rotary cutter and discharge the bag downward while supporting a supplied bag body with a holding member and a guide plate, the holding members form a pair up and down. A plurality of endless bands spanned between the drive shaft and the driven shaft, and a bag is hung on the endless band,
A sub-cutter having a straight blade for breaking the bag is provided, and a rubber belt disposed between the endless belts is provided. The sub-cutter is supported swingably around an upper drive shaft, and a free end at a lower end is attached to a rotary cutter side. The rubber belt is stretched so as to be flush with the endless band on the receiving surface side of the bag body to be supplied, and is separated from the endless band on the back surface side, from the straight blade provided on the endless band. It is configured to be guided to the protruding position, the supplied bag is hooked by the straight blade, the bag is broken by the rotating cutter and the sub cutter while moving at a predetermined speed, and the separation position of the rubber belt on the back side of the pressing member. Wherein the bag body hooked on the rectilinear blade is detached.

In the bag breaking machine according to the fourth aspect of the present invention, the bag can be reliably broken from both sides by the rotary cutter and the sub cutter while the bag is held by the straight blade, and the bag is hooked on the straight blade. The detached bag body can be reliably removed.

A bag breaking machine according to a fifth aspect of the present invention is the bag breaking machine according to the first to fourth aspects, wherein the endless band is formed of a chain.
It is characterized in that it meshes with sprocket wheels provided on the drive shaft and the driven shaft, respectively.

The bag breaking machine of the present invention having the above-described structure can eliminate the slip of the endless band and can reliably hold the bag by the hooking claws or the straight blade.

[0018]

1 to 6 show a first embodiment of a bag breaking machine according to the present invention. The bag breaking machine 1 includes a rotary cutter 2, a pressing member 3 located opposite to the rotary cutter 2, and a guide plate 4 provided to be inclined above the rotary cutter 2. The rotary cutter 2 has a plurality of mounting disks 6 mounted at equal intervals on the support shaft 5 at predetermined intervals, as in the conventional structure.
A disk-shaped cutting blade 7 having a blade portion 7 a formed on the outer circumference is mounted on the mounting disk 6 such that a part of the outer circumference projects from the mounting disk 6. By changing the mounting position of the cutting blade 7, four places can be used as a blade part per one cutting blade.
It is economical. Reference numeral 8 denotes a guide plate that covers the rotary cutter 2. Its structure is the same as that of the conventional structure (see FIGS. 9 and 10), and a description thereof will be omitted.

The bag breaking machine 1 of the present embodiment is divided into three equal parts in the width direction, and as shown in FIG.
An example is shown in which a, 3b, and 3c (when collectively referred to as “pressing member 3”) are arranged in parallel. However, each holding member 3a,
3b and 3c have the same structure.

The pressing members 3a, 3b and 3c are composed of an upper driving shaft 10 common to the pressing members 3a, 3b and 3c, a lower driven shaft 11 provided for each of the pressing members 3a, 3b and 3c, and a double shaft. An endless band 12 is provided between the endless band 12 and a frame 13 that accommodates the endless band 12 and is supported to be swingable about the drive shaft 10. A locking claw 14 is provided.

The frame 13 is a bearing 1 for supporting the drive shaft 10.
Left and right side plates 16 and 17 whose upper ends are swingably supported by
And a connecting rod 18 for connecting the both side plates 16 and 17, and a cover 19 which is formed by bending a plate material covering the back side (the side opposite to the rotary cutter 2) into a V shape. This cover 19
The lower end of the frame body 13 is coupled to the rotary cutter 2 via a connecting plate 21 for urging the free end of the lower end of the frame body 13 toward the rotary cutter 2. It is held at a position with an appropriate interval.

The endless belt 12 is, as shown in FIGS.
It is formed of a chain and meshes with sprocket wheels 22 and 23 provided on the drive shaft 10 and the driven shaft 11, respectively. The chain of the endless belt 12 is a chain with attachment, and a plurality of, for example, three chains are arranged in parallel.
3 is supported by a receiving member 34, and each of the receiving members 32 and 34 is attached to the connecting rod 18. In FIG. 4, reference numeral 43 denotes a side plate of the bag breaking machine 1.

In this embodiment, the endless belt 12 is used together with the endless rubber belt 30. The rubber belt 30 is provided between the endless belts 12. And
Notch 3 passing through rubber belt 30 below cover 19
5 and the guide plate 36 of the rubber belt 30 is attached to the lower end of the notch 35. Accordingly, the rubber belt 30 is disposed between the endless belts 12 stretched between the sprocket wheels 22 and 23, and the endless belts are provided at the upper and lower ends and the receiving surface side (the rotary cutter 2 side) of the supplied bag body W. 12
Endless belt 1 supported by the chain attachment 33
2 and is separated from the chain attachment 33 of the endless band 12 by a guide plate 36 on the back surface side. At this time, since the guide plate 36 is provided at a distance through which the hooking claws 14 provided on the endless band 12 pass (a position farther from the end of the hooking claw 14 with respect to the endless band 12), the guide plate 36 is hung. The stop claw 14 protrudes from the rubber belt 30 on the side of the rotary cutter 2, but on the back side, the rubber belt 30 is lifted away from the endless belt 12, and the hook claw 14 moves inside the rubber belt 30. As a result, the bag W hooked on the hook 14 is separated from the hook 14 by the rubber belt 30 and falls. In FIG. 1, reference numeral 40 denotes a discharge conveyor.

In the above construction, the bag W to be processed, which has been dumped from the guide plate 4 onto the guide plate 8, falls and is hooked by the hook 14 provided on the holding member 3. It moves downward with the movement, and the cutting edge 7 of the rotary cutter 2
Is cut by At this time, the endless belt 12 of the holding member 3
Is operated at a speed lower than the rotation speed of the rotary cutter 2, whereby the bag W is cut so as to be torn and the bag is broken. Then, due to the bag breakage, the contents of the bag W fall downward, the bag moves while being hooked on the hook 14, and the rubber belt 30
Is removed by being pulled up by the guide plate 36,
Fall. In this case, since the bag W supplied onto the holding member 3 is forcibly sent downward by the hook 14, it is effective in preventing bridges that occur when the bags W are thrown in collectively. In addition, since a plurality of holding members 3 are arranged in parallel in the width direction, and each of the holding members 3 swings separately by being pressed against the rotary cutter 2, even when bags W of various sizes are thrown in at the same time, each of the holding members 3 is also placed. The bag can be broken in a state where the interval between the pressing member 3 and the rotary cutter 2 is maintained at the optimum interval corresponding to the bag W at the location. Note that the endless belt 12 may be configured to shift upward in the opposite direction, that is, on the receiving surface side (the rotary cutter 2 side) of the supplied bag body W. However, in this case, it is necessary to prevent the stored items and the bag body W from being shifted to the back side while being hooked on the locking claws 14, and therefore, the storage room rear wall 41 of the bag breaking machine 1 is required. The adjustment plate 42 is mounted on the rear wall 4 of the storage room.
The gap between 1 and the holding member 3 is adjusted.

FIGS. 7 and 8 show a second embodiment of the bag breaking machine according to the present invention. This embodiment is configured as a sub-cutter 40 by providing a rectilinear blade 41 for hooking and breaking a bag, instead of the hook 14 provided on the endless band 12 of the holding member 3 of the first embodiment. It was done. This straight blade 41
Is provided at the same position as the mounting position of the hooking claw 14 of the first embodiment of the endless belt 12, is substantially the same height as the hooking claw 14, and has a cutting blade 42 formed on the upper part. Both ends of the cutting blade 42 are formed in a protruding acute biting portion 42a. The other configuration is exactly the same as the configuration of the first embodiment, and the description is omitted.

In the above configuration, as shown in FIG. 8, the straight blade 41 is moved in the direction of arrow B and at the transition speed thereof, usually at a speed lower than the peripheral speed of the cutting blade 7 of the rotary cutter 2 (direction of arrow A). /
By providing a speed difference of 50 to 1/10, more preferably about 1/20 (slower than the rotation speed of the normal rotary cutter 2), the tearing and cutting effect of the bag W can be improved. That is, the supplied bag body W advances while the rectilinear blade 41 that moves straight forward is pierced and hooked, and the cutting blade 7 of the rotary cutter 2 and the rectilinear blade 41 of the sub cutter 40 simultaneously move the bag body W. Cut as if torn from both sides. As a result, tearing portions Wa and Wb are formed on both sides of the bag W, and the bag is broken, and the bag W is hooked on the straight blade 41. All waste such as cans is bag W
Falling out of the bag and being discharged, waste such as bottles, cans, etc.
Can be completely prevented. In this case, since the bag W supplied onto the holding member 3 is forcibly sent downward by the rectilinear blade 41, it is effective in preventing bridges that occur when the bags W are thrown in at once. In addition, a plurality of pressing members 3 are arranged in parallel in the width direction,
When the bags W of various sizes are thrown in at the same time, the spacing between the holding member 3 and the rotary cutter 2 corresponds to the bag W at each point even when bags W of various sizes are simultaneously loaded because the blades W are individually rocked by being pressed against the rotary cutter 2. The bag can be broken while maintaining the optimum interval.

[0027]

According to the bag breaking machine of the first aspect of the present invention, the supplied bag body is hooked by the hooking claws, and the bag is broken by the rotary cutter while shifting at a predetermined speed. Can be reliably broken by the rotary cutter while holding the hooks with the latching pawls, and the holding member can be swung and the free end of the lower end is urged toward the rotary cutter. When an object is thrown in, the distance between the pressing member and the rotary cutter is widened, and the unbreakable object is discharged, thereby preventing damage to the pressing member and the rotary cutter. Further, according to the bag breaking machine of the second invention, in addition to the above, the bag hooked on the hooking claw is released at the separated position of the rubber belt on the back side of the pressing member. The bag hooked on the claw can be reliably detached. According to the bag breaking machine of the third aspect of the present invention, the supplied bag is hooked by the straight blade, and the bag is broken by the rotary cutter and the sub cutter while moving at a predetermined speed. The rotating cutter and the sub-cutter can more reliably break the bag from both sides while holding the blade, and the holding member can swing and the free end at the lower end is urged toward the rotating cutter. When a bag-impossible object is thrown in, the distance between the pressing member and the rotary cutter is increased, the bag-impossible object is discharged, and damage to the pressing member and the rotary cutter can be prevented. Further, according to the bag breaking machine of the fourth invention, in addition to this, the bag body hooked on the rectilinear blade is detached at the separated position of the rubber belt on the back side of the pressing member. The hooked bag body can be reliably removed. Further, according to the bag breaking machine of the fifth aspect of the invention, the endless band is formed in the chain and meshes with the sprocket wheels provided on the drive shaft and the driven shaft, so that the slip of the endless band is eliminated,
The holding of the bag body by the locking claws or the straight blade can be ensured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of a bag breaking machine according to the present invention.

FIG. 2 is a front view of a holding member of the bag breaking machine of the present invention.

FIG. 3 is a rear view of a pressing member of the bag breaking machine of the present invention.

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is a sectional view taken along line XX in FIG. 2;

FIG. 6 is a front view of the endless belt.

FIG. 7 is a front view of an endless band (sub cutter) of a second embodiment of the bag breaking machine of the present invention.

FIG. 8 is an explanatory diagram of the operation.

FIG. 9 is a longitudinal sectional view of a conventional bag breaking machine.

FIG. 10 is a sectional view taken along the line YY in FIG. 9;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bag breaking machine 2 rotary cutter 3 holding member 4 guide plate 8 guide plate 10 drive shaft 11 driven shaft 12 endless band 14 locking claw 30 rubber belt 40 sub cutter 41 straight blade

Claims (5)

(57) [Claims] 1. A bag to be supplied, comprising: a rotary cutter having a cutting blade; a pressing member positioned to face the rotary cutter; and a guide plate having an arcuate central portion for covering the rotary cutter. In a bag breaking machine in which a bag is broken by a rotary cutter and discharged downward while being supported by a holding member and a guide plate, the holding member is stretched between a drive shaft and a driven shaft which form a pair vertically. Endless band, and a hook for hooking a bag body to the endless band. The endless band is supported swingably about an upper drive shaft, and the free end at the lower end is urged toward the rotary cutter. A bag breaking machine characterized in that the supplied bag body is hooked by a hook claw, and the bag is broken by a rotary cutter while moving at a predetermined speed. 2. A bag to be supplied, comprising: a rotary cutter having a cutting blade; a pressing member positioned opposite to the rotary cutter; and a guide plate for covering the rotary cutter with a central portion in an arc shape. In a bag breaking machine in which a bag is broken by a rotary cutter and discharged downward while being supported by a holding member and a guide plate, the holding member is stretched between a drive shaft and a driven shaft which form a pair vertically. A plurality of endless belts, a locking claw that locks the bag body on the endless band, and a rubber belt disposed between the endless bands, while supporting the swingable centering on the upper drive shaft, The free end of the lower end is urged toward the rotary cutter side, and the rubber belt is stretched so as to be flush with the endless band on the receiving surface side of the supplied bag body,
On the back side, it is separated from the endless belt and guided to a position protruding from the hooking claw, the supplied bag is hooked by the hooking claw, and the bag is broken by the rotating cutter while moving at a predetermined speed. A bag breaking machine characterized in that the bag hooked on the hooking claw is detached at a separated position of the rubber belt on the back side of the pressing member. 3. A bag to be supplied, comprising: a rotary cutter having a cutting blade; a pressing member positioned to face the rotary cutter; and a guide plate having a central portion formed in an arc shape to cover the rotary cutter. In a bag breaking machine in which a bag is broken by a rotary cutter and discharged downward while being supported by a holding member and a guide plate, the holding member is stretched between a drive shaft and a driven shaft which form a pair vertically. Endless belt, and a sub-cutter having a straight blade for hooking the bag to the endless belt and breaking the bag. The sub-cutter is supported so as to be swingable around the upper drive shaft, and the free end at the lower end is a rotary cutter. A bag breaking machine characterized in that the bag is urged to the side, the supplied bag body is hooked by a straight blade, and the bag is broken by a rotary cutter and a sub cutter while moving at a predetermined speed. 4. A bag body provided with a rotary cutter having a cutting blade, a pressing member positioned opposite to the rotary cutter, and a guide plate for covering the rotary cutter with a central portion in an arc shape. In a bag breaking machine in which a bag is broken by a rotary cutter and discharged downward while being supported by a holding member and a guide plate, the holding member is stretched between a drive shaft and a driven shaft which form a pair vertically. A plurality of endless belts, and a sub-cutter having a straight blade for hooking a bag to the endless belt and breaking the bag, and a rubber belt disposed between the endless bands, with the upper drive shaft as a center. While swingably supported, the free end of the lower end is urged toward the rotary cutter side, and the rubber belt is stretched so as to be flush with the endless band on the receiving surface side of the supplied bag body, and its back surface is Endless band on the side The bag is supplied to a position protruding from the straight blade provided on the endless belt, and the supplied bag is hooked by the straight blade and broken by the rotating cutter and the sub cutter while shifting at a predetermined speed. A bag breaking machine characterized in that the bag is hooked and the bag hooked on the rectilinear blade is detached at the separated position of the rubber belt on the back side of the holding member. 5. The endless belt is formed of a chain and meshes with sprocket wheels provided on a drive shaft and a driven shaft, respectively.
The bag breaking machine described.