JPS649055B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a bag-breaking machine, and more specifically, a bag-breaking machine that tears thrown garbage bags, etc., by a weight that swings within a rotating drum. Regarding machines. This is used in the field of processing equipment that removes garbage from plastic bags or the like before crushing it, and aims to recycle household garbage that has been packed in bags and collected.

[Prior art]

In order to process household waste, etc., it may be necessary to reduce its volume by applying a crusher. Unlike food waste, such garbage is somewhat larger, and moreover, the collection bags often contain reusable items.Recently, in response to requests for the reuse and recycling of waste items, plastic Empty bottles and cans are collected from bags and other garbage bags. For this reason, workers manually tear open the bag with a knife or the like to remove the garbage, and then sort out what can be used from among the garbage.

Since tearing such bags is not easy, it is desired to mechanize the process. For example, Japanese Patent Laid-Open No. 55-147161 proposes a bag-breaking device for separately collected garbage.
In this case, a large number of protruding blades are attached to the inner surface of a rotating drum that is slightly inclined in the axial direction, and a dam plate that swings in the rotational direction of the drum is supported within the drum. According to this, the thrown plastic bags, etc. are moved in the rotational direction of the drum by the protruding blades, and when they come into contact with the dam plate, their movement is attempted to be stopped. Plastic bags are torn apart. Since the drum is slightly inclined toward the discharge port, the broken up garbage naturally moves and is discharged together with the torn plastic bags.

However, according to such a bag-breaking device, the dam plates are arranged in the axial direction of the drum, so if the plastic bags moving in the circumferential direction are not held down by the dam plates many times, they will break inside the drum. Even the protruding blade provided cannot sufficiently tear the plastic bag. That is, only the protruding blade has a bag-breaking function, and the dam plate only holds the plastic bag but does not have the function of actively tearing it. In addition, since the dam plate does not have a cross-sectional shape that expands along the circumferential direction of the rotating drum, the time that the plastic bag is caught between the dam plate and the protruding blades on the inner surface of the rotating drum is shortened, and the bag is If the bag is moved under the ground, the bag will no longer be torn and the dam plate will often not be able to crush the bag enough. Therefore, problems arise such as it takes time to break the bags and a large number of plastic bags that are not broken remain in the drum.

[Purpose of the invention]

The present invention was developed in view of the above-mentioned problems, and its purpose is to prolong the time spent pushing and crushing plastic bags in a drum and scratching the surface of the bag in order to break the plastic bags. By doing so, it is an object of the present invention to provide a bag tearing machine which can quickly and efficiently tear bags even with an extremely simple structure.

[Structure of the invention]

The features of the bag tearing machine of the present invention will be explained with reference to FIG. A weight 11 that rotates in the circumferential direction of the drum is swingably supported on a support shaft 10 that passes through the drum.
A plurality of bag-breaking blades 12 are attached to the lower surface of the weight 11, and an imaginary line 13 connecting the tips of each bag-breaking blade 12 forms an arc shape with a bulge in the same direction as the inner peripheral surface of the rotating drum 2. It's a familiar thing.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. FIG. 2 is an overall sectional view of the bag tearing machine, in which a rotary drum 2 is rotatably supported by front and rear rollers 1A and 1B, and a front wall 4 and a rear wall 5 are fixedly erected on a base 3 at the front and rear. It is closed by. An input port 4a and a discharge port 5a are opened in each of the walls 4 and 5,
Shoots 4b and 5b are attached. The rotating drum 2 is rotated in its circumferential direction by a driving means (not shown) horizontally or in a downwardly inclined state toward the discharge port 5a, and has a spiral blade 6 on its inner circumference.
is installed. This is provided with a large number of protruding pawls 9 for moving the bag to be destroyed, such as a plastic bag 8 containing garbage 7, in the circumferential direction, and
The interval between adjacent blades 6, 6 is narrow on the input port side and wide on the discharge port side. In the illustrated example, there are two spirals near a weight 11, which will be described later, so that an unbroken plastic bag 8 or the like can be placed on the blade 6. Note that the garbage 7 that has been torn and taken out and the damaged plastic bag fit into the spiral groove 6a formed between the adjacent blades 6, so that they do not interfere with the tearing of the next plastic bag 8. At the same time, as the rotary drum 2 rotates, they are sequentially moved toward the discharge port 5a.

As shown in FIG. 1, a support shaft 10 is installed in the rotary drum 2, extending vertically through the rotary drum 2 below the central axis 2a.
A weight 11 that rotates in the circumferential direction of the drum is swingably supported. A plurality of bag-breaking blades 12 are attached to the circumferential direction of the circular arc-shaped outer circumferential surface of the lower surface of the weight 11, and an imaginary line 13 connecting the tips of the respective bag-breaking blades
However, the arrangement of the full bag-breaking blade 12 is determined so that it has an arcuate shape with a bulge in the same direction as the inner circumferential surface of the rotating drum 2. The arc may or may not be concentric with the drum, but by being an arc, the bag breaking blade 12 can be moved by the swinging back of the weight 11.
The swinging back distance becomes longer, and the bag tearing blade 12 bites and tears the plastic bag 8 more actively.

The support shaft 10 also passes through the front wall 4 and the rear wall 5 shown in FIG.
It is supported by 4A and 14B. The weight 11 fixed to the support shaft 10 is heavy, weighing hundreds of kilograms in some cases, and in the example shown in FIG. 3, its main body has a substantially fan-shaped cross section. However, due to manufacturing reasons, the shape is triangular, and the outer peripheral surface 11
In some cases, a has a polygonal shape. In any case, the area for pressing and crushing the plastic bag 8 on the blade 6 against the protruding blade 9 provided on the spiral blade 6 is wider in the circumferential direction than the aforementioned dam plate or the like. , it is sufficient that a plurality of bag-breaking blades 12 drawing an arc as described above can be attached. Incidentally, since the support shaft 10 is located below the central axis 2a of the rotating drum 2, the distance between the weight 11 and the blade 6 gradually narrows, making it easier for the plastic bag 8 to enter. Further, when the plastic bag 8 enters and the weight 11 rotates together with the rotating drum 2, the distance between the weight 11 and the inner end of the blade 6b gradually opens as shown by the broken line in FIG. . That is, plastic bag 8
If it rises too high, the contact force of the weight 11 will be weakened, and as a result, the weight 11 will be swung back forcefully by its own weight, and at this time, the plurality of bag-breaking blades 12 arranged in an arc will tear the top of the plastic bag 8. act.

The reason why one side 11b of the weight 11 is flat is that when a hard object other than the plastic bag 8, such as a vacuum cleaner, comes, the weight 11 swings and forms a spiral with the side 11b facing downward. This is to prevent damage or deformation of the blade by passing them between the blade 6 and the blade 6. Note that if the bag-breaking blade 12 is also arranged in the axial direction of the weight 11 as shown in FIG. 2, one weight 11 can break a plurality of plastic bags 8 at once. Further, the shape may be a sharp one or a rectangular shape as shown in the figure. Also, it is the support shaft 10 of the weight 11.
They may be attached radially from the first
It is convenient to tilt the rotating drum 2 in the rotational direction 2A as shown in the figure, since plastic bags, strings, etc. do not get tangled when swinging back. Incidentally, the reason why the weight 11 is located to the left of the central axis 2a is because the input port 4a is opened to the right thereof.

According to the embodiment having such a configuration, the plastic bag 8 can be easily broken using the bag breaking blade 12 in the following manner.

When the plastic bags 8 containing the garbage 7 are sequentially introduced from the input port 4a, they are moved in the circumferential direction by the protruding pawls 9 attached to the spiral blade 6 as the rotary drum 2 rotates. The weight 11 is attached to the support shaft 10 regardless of the rotation of the rotating drum 2.
When the plastic bag 8 reaches there, the bag-breaking blade 12 on the outer periphery of the weight 11
The weight 11 is sandwiched between the spiral blades 6 and the weight 11 is rotated in the rotation direction 2 of the rotating drum 2 by the contact force.
Rotate to A. The plastic bag 8 moves to be further lifted by the protruding pawl 9, but as the distance between the bag tearing blade 12 and the spiral blade 6 becomes wider and the contact force weakens, the weight 11 suddenly lifts due to its own weight. will be returned to. At that time, the outer peripheral surface 11a of the weight 11
A plurality of bag tearing blades 12 attached to the plastic bag 8 tear the upper part of the plastic bag 8 by scraping the upper part thereof. Since the line connecting the tip of the bag-breaking blade 12 has an arc shape that bulges in the same direction as the rotating drum 2, the time that the plastic bag 8 is broken becomes longer, and most of the plastic bags can be broken with one swing. The plastic bag 8 is torn.

The garbage 7 is taken out from the torn plastic bag 8 and fits into the spiral groove 6a. Therefore, when the next plastic bag 8 reaches the weight 11, the same operation is repeated and the garbage 7 is sequentially moved along the spiral blade 6 toward the discharge port 5a. The width of the spiral groove 6a is narrowed around the weight 11 because it is necessary to place the plastic bag 8 thereon as described above, but it is widened near the discharge port 5a to facilitate quick movement for discharge. It will be done. It should be noted that reusable items such as fragile empty bottles and empty cans that can be used as scraps are discharged with little damage other than rubbing against the arcuate inner surface of the rotating drum 2. Other garbage is sent to a separate crusher to reduce its volume and, if necessary, is incinerated or otherwise disposed of.

As mentioned above, if the bag-breaking blade 11 is installed at an angle, when the weight 12 is swung back, it is prevented from getting entangled with the strings that tied the plastic bags 8 or the plastic bags, and the plastic bags that are being thrown in one after another are Bag 8 can be broken.

In the embodiments described above, the spiral blade is provided on the inner peripheral surface of the rotating drum, but if such a blade is not provided, the protruding blade may be directly attached to the inner peripheral surface of the drum. The shape of the protruding blade may be, for example, a sharp cone, or a continuous protrusion extending approximately in the longitudinal direction of the rotating drum. In this case, if the rotating drum is installed tilted in the axial direction, the garbage can be smoothly moved to the discharge port.

〔Effect of the invention〕

As can be seen from the detailed description of the embodiments above, the present invention has a protruding blade provided inside a rotating drum, and a weight having a plurality of bag-breaking blades attached to a support shaft that runs vertically through the drum. It is supported so that it can swing freely in the circumferential direction, and the imaginary line connecting the tips of each bag-breaking blade is shaped like an arc with a bulge in the same direction as the inner circumferential surface of the rotating drum, so that the weight can be easily connected to the protruding blade. It takes a long time to press the plastic bag located between the bags, and the bag tearing blade actively tears the plastic bag. Moreover, the contact distance of the bag-breaking blade when the weight is swung back is longer due to the circular arc, so that biting and tearing are performed more efficiently, and bags are broken extremely easily, reliably, and quickly. Furthermore, since the shape of the weight itself can be selected from the viewpoint of manufacturing, it is possible to achieve a predetermined purpose with a simple structure.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a bag tearing machine according to the present invention, FIG. 2 is a longitudinal cross-sectional view thereof, and FIG. 3 is a side view of a weight. 2...Rotating drum, 8...Bag to be destroyed (plastic bag), 9...Protruding blade, 10...Support shaft, 11...
Weight, 12... Breaking blade, 13... Virtual line.

Claims (1)

[Scope of Claims] 1. A protruding blade for moving the bag to be destroyed in the circumferential direction is provided inside the rotating drum, and a weight that rotates in the circumferential direction of the drum is attached to a support shaft that runs longitudinally through the rotating drum. A weight is swingably supported, a plurality of bag-breaking blades are attached to the bottom surface of the weight, and an imaginary line connecting the tips of each bag-breaking blade is in the same direction as the inner peripheral surface of the rotating drum. A bag tearing machine characterized by a bulging arc shape.