JPH0114815B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bag-breaking machine, and more specifically, the present invention relates to a bag-breaking machine that tears thrown garbage bags, etc., using a weighted bag-breaking blade that swings within a rotating drum. This is related to the bag breaking machine. This is used in the field of processing equipment that removes garbage from plastic bags or cardboard boxes containing garbage before crushing the garbage, 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 slightly larger and often contains reusable items in the collection bag. Recently, in response to requests for the reuse and recycling of waste products, empty bottles and cans have been collected from plastic bags, cardboard boxes, and other garbage bags. Therefore, workers manually tear open the bags to remove the garbage and sort out what is usable 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 having a bag-breaking claw at the lower end is supported so as to swing in the rotational direction of 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 touch the dam plate, their movement is attempted to be stopped. The plastic bags are starting to tear apart.
Since the drum is slightly slanted toward the discharge port, the garbage inside moves naturally and is discharged together with the torn plastic bag. In addition, if a hard object comes that will not break even if the bag touches the dam plate, care is taken to prevent the dam plate from rotating in the rotational direction of the drum and damaging the dam plate or its bag-breaking claw. ing.

However, with such bag-breaking devices, empty bottles removed from torn plastic bags often hit the protruding blades repeatedly before reaching the outlet, making it impossible to reuse them. There's a problem. In addition, although the dam plate is equipped with multiple bag-breaking claws, they are arranged in the axial direction of the drum, so the plastic bags moving in the circumferential direction have to hit the dam plate many times. Otherwise, it may not break sufficiently. Therefore, there are problems in that it takes time to break the bags and that a large number of garbage bags accumulate in the drum.

[Purpose of the invention]

The present invention was created in view of the above-mentioned problems, and its purpose is to tear plastic bags, cardboard boxes, etc. very easily and quickly, and also to prevent easily broken empty bottles etc. from being removed from the trash. To provide a bag tearing machine capable of discharging bags without causing damage and, if necessary, preventing accumulation of large garbage after bag tearing.

[Structure of the invention]

The features of the bag tearing machine of the present invention will be explained with reference to FIGS. 1 and 2. A spiral blade 6 having protruding pawls 9 is attached to the inner periphery of the rotating drum 2.
A support shaft 10 passing through the rotary drum 2 is installed below the central axis 2a of the rotary drum 2, and a weight 12 having a plurality of bag-breaking blades 11 attached in the circumferential direction of the circular arc-shaped outer circumferential surface is rocked on this support shaft. It is supported so that it can move freely.

In addition to the configuration of the invention described above, the second invention includes a plurality of protrusions 16 on the front surface of the weight 12A that generate crushing force with the spiral blade 6 by rotation of the weight. The crushing portion 15 is formed to have the following characteristics.

In addition to the configuration of the first invention, the third invention provides an input port 4 on the rear surface of the weight 12B, as shown in FIG.
A guide portion 19 is formed that slopes downward from a toward the discharge port 5a (see FIG. 1).

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. FIG. 1 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. 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 claws 9 for moving a plastic bag 8 containing garbage 7 in the rotational direction, and the interval between adjacent blades 6 is narrow on the input port side and is narrow on the discharge port side. It's getting wider. In the illustrated example, there are two spirals near a weight 12, which will be described later, so that an unbroken plastic bag 8 or the like can rest 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. 2, a support shaft 10 is installed in the rotary drum 2 and extends through the rotary drum 2 below the central axis 2a.
A weight 12 having a plurality of bag-breaking blades 11 attached to it in the circumferential direction of its arc-shaped outer circumferential surface is swingably supported.
Note that the support shaft 10 is connected to the front wall 4 and rear wall 5 shown in FIG.
It also penetrates through the base 3, and its both ends are supported by bearings 13A and 13B provided on the base 3. The weight 12 fixed to this support shaft 10 is heavy, weighing hundreds of kilograms in some cases, and has an approximately fan-shaped cross section in the example shown in FIG. It is only necessary that a plurality of bag-breaking blades 11 be attached in the circumferential direction of the outer periphery that rotates so as to scrape the upper part of the bag 8. Note that the support shaft 10
is located below the central axis 2a of the rotating drum 2, so there is a plastic bag 8 between the weight 12 and the blade 6.
When the weight 12 enters and rotates together with the rotating drum 2, the distance between the weight 12 and the blade inner end 6b gradually opens as shown by the imaginary line in FIG. In other words, if the plastic bag 8 rises too high, the contact force with the weight 12 is weakened, and therefore the weight 1
2 begins to be swung back forcefully by its own weight, and at this time, a plurality of bag tearing blades 11 arranged in the circumferential direction act to tear the upper part of the plastic bag 8. In addition, if the bag-breaking blade 11 is also arranged in the axial direction of the weight 12 as shown in FIG. 1, one weight 12 can break a plurality of plastic bags 8 at once. In addition, 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 12.
Although they may be attached radially from above, it is convenient to make them inclined in the rotation direction 2A of the rotating drum 2 as shown in the figure, since plastic bags, strings, etc. do not get tangled when swinging back. Incidentally, the reason why the weight 12 is located to the left of the central axis 2a in FIG. 2 is because the input port 4a is opened to the right of the weight 12.

According to the embodiment with such a configuration, the plastic bag 8 can be easily broken using the bag breaking blade 11 in the following manner, and the removed garbage can be smoothly moved to the discharge port without being damaged. Can be done.

When plastic bags 8 containing garbage 7 are sequentially fed into the input port 4a, they are moved in the circumferential direction by protruding claws 9 attached to the spiral blade 6 as the rotating drum 2 rotates. do. The weight 12 is attached to the support shaft 1 regardless of the rotation of the rotating drum 2.
0, so when the plastic bag 8 reaches there, the bag-breaking blade 1 on the outer periphery of the weight 12
1 and the spiral blade 6,
The contact force causes the weight 12 to rotate in the rotation direction 2A of the rotary drum 2. As the plastic bag 8 moves to be further lifted by the protruding pawl 9, when the gap between the bag tearing blade 11 and the spiral blade 6 becomes wider and the contact force weakens, the weight 12 is suddenly lifted by its own weight. will be returned to. As a result, the plurality of bag tearing blades 11 lined up on the outer peripheral surface rub against the top of the plastic bag 8 and tear it.

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 12, the same operation is repeated. The garbage 7 is moved along the spiral blade 6 toward the discharge port 5a. The width of the spiral groove 6a is narrowed around the weight 12 because it is necessary to place the plastic bag 8 thereon as described above, but it is widened near the discharge port 5a.
Transfer for evacuation occurs quickly. 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, the strings tying the plastic bags 8 and the plastic bags themselves are prevented from getting tangled when the weight 12 is swung back, and the bags can be thrown in one after another. The plastic bag 8 can be broken.

FIG. 4 is a cross-sectional view of the weight 12A in the second invention, in which the above-mentioned bag-breaking blade 11 is attached, and also the front side 14, that is, the front side when the weight 12A is swung back. A crushing part 15 is formed in the. A plurality of protrusions 16 are attached here, which generate crushing force with the inner end 6b of the spiral blade 6 as the weight 12A rotates.

According to such a weight 12A, garbage can be taken out not only from the plastic bag 8, which is easy to tear, but also from a cardboard box, which is not easy to tear. That is, when a cardboard box (not shown) is inserted into the input port 4a, it is moved to the weight 12A by the protruding pawl 9 of the spiral blade 6, and when it comes into contact with the front surface of the weight 12A, the weight 12A is moved. Start rotating. At that time, the crushing part 15 and the inner end 6b of the spiral blade 6
Since the distance between the protrusions 16 and the protrusions 16 gradually narrows, the cardboard box is crushed by the protrusions 16. However, a certain amount of space is left in place to prevent the empty bottles stored there from being damaged. As a result, the cardboard box is deformed and then easily torn apart by swinging back the weight 12A. Therefore, if the crushing section 15 is provided, the cardboard box 17 can also be easily broken.

FIG. 5 is a sectional view of the weight 12B in the third invention, in which the rear surface 18 has a triangular cross section and an input port 4.
A guide portion 19 is formed, the back surface 19a of which is sloped downward from a toward the discharge port 5a.

According to this, even if a relatively large piece of garbage may accumulate on the rear surface of the weight 12B, it can be moved toward the discharge port 5a. That is,
Among the garbage taken out from the plastic bag, there are some items such as cans and vacuum cleaners that do not fit into the spiral groove 6a. Although ordinary garbage is moved by the spiral blade 6, such garbage still remains behind the weight 12B and obstructs the tearing of the next plastic bag 8. However, the guide part 19
Therefore, the vacuum cleaner or the like is moved by its own weight along the slope of the back surface 19a toward the outlet 5a.
When they reach the wide helical groove of the helical blade 6, they are moved by the helical blade 6,
It is discharged from the discharge port 5a in the same manner as described above.

〔Effect of the invention〕

As can be seen from the detailed description of the embodiments above, the present invention is characterized in that a spiral blade having protruding claws is attached to the inner periphery of a horizontally installed rotating drum, and is installed below the central axis of the rotating drum. A weight with a plurality of bag-breaking blades attached to the circumferential direction of the circular arc-shaped outer circumferential surface is swingably supported on the support shaft. Even if there is a fragile empty bottle in the garbage, it can be taken out without damaging it.

In the second invention, in addition to the effects of the invention described above, a crushing portion having a plurality of protrusions that generates crushing force with a spiral blade by rotation of the weight is formed on the front surface of the weight. This makes it possible to quickly tear down not only plastic bags but also cardboard boxes. Furthermore, in the third aspect of the invention, since the guide portion is formed on the rear surface of the weight and is sloped downward from the input port to the discharge port, it is possible to prevent large garbage from accumulating after the bag is broken. It is possible to sustain the breakage of plastic bags and the like that are sequentially thrown in.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the bag tearing machine according to the present invention, FIG. A sectional view of the weight according to the invention, FIG. 5 is a sectional view of the weight according to the third invention. 2... Rotating drum, 2a... Central shaft, 4a...
Input port, 5a...Discharge port, 6...Spiral blade, 7...Garbage, 8...Plastic bag, 9...Protruding claw, 10...Support shaft, 11...Bag tearing blade, 12,1
2A, 12B... Weight, 15... Crushing part, 16...
...Protrusion, 19...Guide part.

Claims (1)

[Scope of Claims] 1. A spiral blade having protruding claws is attached to the inner periphery of the rotating drum, a support shaft passing through the rotating drum is installed below the central axis of the rotating drum, and a circular blade is attached to the support shaft. A bag breaking machine characterized in that a weight having a plurality of bag breaking blades attached to the circumferential direction of an arcuate outer circumferential surface is swingably supported. 2. A spiral blade having protruding claws is attached to the inner periphery of the rotating drum, and a support shaft passing through the rotating drum is installed below the central axis of the rotating drum, and the support shaft is attached to the circumferential direction of the arcuate outer circumferential surface. A weight to which a plurality of bag-breaking blades are attached is swingably supported, and a crushing section having a plurality of protrusions on the front surface of the weight that generates crushing force with the spiral blades as the weight rotates. A bag breaking machine characterized by forming and forming. 3. A spiral blade having protruding claws is attached to the inner circumference of the rotating drum, and a support shaft passing through the rotating drum is installed below the central axis of the rotating drum, and the supporting shaft is attached to the circumferential direction of the arcuate outer circumferential surface. A weight to which a plurality of bag-breaking blades are attached is swingably supported, and a guide portion is formed on the rear surface of the weight and slopes downward from the input port to the discharge port. Bag breaking machine.