JPS649054B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a bag tearing machine, and more specifically, the present invention relates to a bag tearing machine that tears thrown garbage bags, etc., by a weight that swings within a cylindrical drum. This paper relates to a bag-breaking machine. This is used in the field of processing equipment that removes garbage from plastic bags, etc. 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 dispose of household waste, etc., it may be necessary to reduce the volume of the waste by applying it to a bag-breaking machine. 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 products, empty bottles and cans are being collected from plastic 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 bag-breaking devices, the dam plates are arranged in the axial direction of the drum, so the plastic bags moving in the circumferential direction must be held down by the dam plates many times before they can be broken sufficiently. . Moreover, 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 not caught between the dam plate and the protruding blades on the inner surface of the rotating drum. 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 has been made in view of the above-mentioned problems, and its purpose is to prolong the time of pressing and crushing in the drum in order to break plastic bags, etc., and to quickly break the plastic bags with an extremely simple structure. To provide a bag tearing machine capable of easily and efficiently tearing bags.

[Structure of the invention]

The characteristics of the bag tearing machine of the present invention will be described with reference to FIG. The weight 7 is swingably supported around a support shaft 6, and a plurality of bag-breaking blades 10 are mounted along the circumferential direction of the outer circumferential surface 7a of the weight 7 so as to face the inner circumferential surface of the cylindrical drum 2. The input port 4a through which the to-be-destroyed bag 9 is introduced into the cylindrical drum 2 is connected to the weight 7.
It is located above and on one side of the weight 7.

As shown in FIG. 4, the second invention is such that the input port 4a through which the bag to be destroyed 9 is input into the rotating cylindrical drum 2M is located above the weight 7M and on one side of the weight 7M. It is located upstream of the weight 7M in the drum rotation direction 2B.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. Figure 2 is an overall sectional view of the bag tearing machine, with base 1
The cylindrical drum 2, which is arranged to be inclined upward, is closed at the front and back by a front wall 4 and a rear wall 5.
An input port 4a and a discharge port 5a are opened in each of the walls 4 and 5, and chute 4b and 5b are attached. In such a cylindrical drum 2, as shown in FIG. 1, a support shaft 6 is installed below the central axis 2a and extends vertically through the cylindrical drum 2. A weight 7 having a wide cross-sectional shape is supported so as to be swingable about its support shaft 6. The support shaft 6 also passes vertically through the front wall 4 and rear wall 5 shown in FIG. 2, and both ends thereof are connected to the base 1.
It is supported by bearings 8A and 8B provided in the. The weight 7 fixed to the support shaft 6 is quite heavy, and has a substantially fan-shaped cross section in the example shown in FIG. 3, but for manufacturing reasons, the outer peripheral surface 7a may have a polygonal shape. In any case, the area for pressing and crushing the plastic bag 9, which is the to-be-destroyed bag inside the cylindrical drum 2, against the inner peripheral surface of the drum is larger in the circumferential direction than the above-mentioned dam plate or the like. A plurality of bag tearing blades 10 along the circumferential direction are attached to the inner circumferential surface of the cylindrical drum 2 on the outer circumferential surface 7a so as to move so as to rub against the plastic bag 9 during the swing-back operation described later. They are mounted facing each other. Note that the weight of the plastic bag 9 falling from the input port 4a causes the weight 7 to rotate, and when the plastic bag 9 falls to the bottom of the drum 2, the force for rotating the weight 7 disappears, and the weight 7 is now being swung back by its own weight. Incidentally, if a large number of bag-breaking blades 10 are arranged in the axial direction of the weight 7 as shown in FIG. 2, one weight 7 can break a plurality of plastic bags 9 at once. Further, the shape may be a sharp one or a rectangular shape as shown in FIG. Also,
They may be attached radially from the support shaft 6 of the weight 7, but it is more convenient if they are tilted as shown, since plastic bags, strings, etc. will not get tangled when swinging back. Furthermore, if the support shaft 6 is located below the central axis 2a of the cylindrical drum 2 as shown, the distance between the weight 7 and the inner peripheral surface of the drum gradually narrows, and the plastic bag 9 It has the advantage of being easier to get into.

According to the embodiment with such a configuration, the plastic bag 9 is easily broken using the bag breaking blade 10 in the following manner, and the removed garbage 11 is smoothly moved to the discharge port 5a without being damaged. can do.

When the plastic bags 9 containing the garbage 11 are sequentially inputted from the input port 4a, they fall near one side 7b of the weight 7 (see FIG. 1). The weight 7 hangs down so that it can swing around the support shaft 6, so when the plastic bag 9 falls there, the weight 7
It comes to almost the lowest position of the inner circumferential surface of the drum 2 while being sandwiched between the outer circumferential surface 7a of the drum 2 and the inner circumferential surface of the drum.
The weight 7 rotates in the direction of arrow 2A due to the pressing force, and the plastic bag 9 is crushed by the weight 7. When the weight 7 is swung back by its own weight, the bag-breaking blade 1
0, the top of the plastic bag 9 is rubbed and the bag is torn.

The garbage 11 is taken out from the torn plastic bag 9, and the next plastic bag 9 is also torn by the pressure and swinging action of the weight 7. In addition, since the cylindrical drum 2 is inclined, the garbage 11 moves toward the discharge port 5a by rolling on the lower part of the inner peripheral surface of the drum. Reusable items such as empty bottles and empty cans that can be used as scrap are sorted outside the cylindrical drum 2, and other garbage is placed in a separate crusher to reduce its volume and, if necessary, incinerated before being disposed of. be disposed of.

FIG. 5 is a cross-sectional view of a bag tearing machine according to a different invention, in which a cylindrical drum 2M rotatably supported by rollers 1A and 1B has a front wall 24 and a rear wall erected and fixed to a base 1. It is closed by 25. An inlet 4a and an outlet 5a are opened in both walls, and chutes 4b and 5b are attached. The cylindrical drum 2M is rotated in the circumferential direction by a driving means (not shown) horizontally or in a downwardly inclined state toward the discharge port 5a, and a spiral blade 12 is attached to the inner periphery of the cylindrical drum 2M. The interval between the adjacent blades 12, 12 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 7M, which will be described later, so that an unbroken plastic bag 9 or the like can be placed on the blade 12. In addition, adjacent blade 1
The trash 11 that has been torn and taken out and the damaged plastic bag fit into the spiral groove 12a formed between the two, so as not to impede the tearing of the next plastic bag 9. As the shaped drum 2M rotates, they are sequentially moved toward the discharge port 5a. The weight 7A shown in FIG. 4 is the weight 7A described above.
There is almost no difference between the two sides, but the reason why one side 7c is flat is because when a hard object other than the plastic bag 9, such as a vacuum cleaner, comes, the weight 7M swings downward. facing side 7c
They are passed between the blade 12 and the spiral blade 12 to prevent damage or deformation of the blade. The position of the input port 4a through which the plastic bags 9 are input into the rotating cylindrical drum 2 is determined by the weight 7.
A position that is upstream from M in the drum rotation direction 2B, where the plastic bag 9 always enters between the weight 7M and the inner end 12b of the spiral blade 12, and where the bag is likely to be torn by swinging back the weight 7M. Care has been taken to ensure that.

According to this example, the plastic bag 9 is attached to the weight 7
The bag-breaking blade 10 and the spiral blade 1 on the outer peripheral surface 7a of M
2, the plastic bag 9 is crushed by the pressing force, and the weight 7M rotates in the rotation direction 2B of the cylindrical drum 2M. The plastic bag 9 moves along the circumferential direction so as to be lifted by the spiral blade 12, and at the same time, the distance between the bag-breaking blade 10 of the weight 7M and the spiral blade 12, which swings in the same direction, gradually widens. Become. plastic bag 9
When the pressing force weakens, the weight 7M is suddenly swung back by its own weight, and the plurality of bag-breaking blades 10 lined up on the outer circumferential surface
The person rubs the top of the plastic bag 9 and tears it.

In the embodiments described above, a spiral blade is provided on the inner peripheral surface of the rotating drum, but if this is not adopted, the cylindrical drum can be installed at an angle to facilitate the discharge of garbage. can.

〔Effect of the invention〕

As can be seen from the detailed description of the embodiments above, the present invention swingably supports a weight having a cross-sectional shape extending along the circumferential direction of a cylindrical drum. A plurality of bag-breaking blades are installed so as to face the inner circumferential surface of the cylindrical drum along the direction, and the inlet for introducing the bag to be broken into the cylindrical drum is placed above and above the weight. Since the weight is placed on one side of the protruding blade, the time it takes for the weight to press the plastic bag between the protruding blade and the protruding blade is longer, and the bag-breaking blade, which is moved by the swinging weight, promotes bag-breaking. Ru. As a result, plastic bags and the like can be torn extremely easily and quickly.

In the second invention, the input port through which the bag to be destroyed is introduced into the rotating cylindrical drum is located above the weight, on one side of the weight, and upstream of the weight in the drum rotation direction. Therefore, the movement of the bag to be broken due to the rotation of the drum is promoted, and the bag can be broken extremely easily, reliably, and quickly.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a bag-breaking machine according to the present invention, FIG. 2 is a vertical cross-sectional view thereof, FIG. 3 is a side view of a weight, and FIG. 4 is a cross-sectional view of a bag-breaking machine according to a different invention. Figure 5 is a longitudinal sectional view thereof. 2,2M...Cylindrical drum, 2B...Rotation direction, 4a...Input port, 6...Support shaft, 7,7M...
... Weight, 7a ... Outer peripheral surface, 9 ... Bag to be destroyed (plastic bag), 10 ... Bag-breaking blade.

Claims (1)

[Scope of Claims] 1. A weight having a cross-sectional shape extending along the circumferential direction of a cylindrical drum is swingably supported around a support shaft passing longitudinally through the cylindrical drum, and the weight is A plurality of bag-breaking blades are mounted along the circumferential direction of the outer circumferential surface of the weight so as to face the inner circumferential surface of the cylindrical drum, and an inlet for introducing the bag to be broken into the cylindrical drum is provided with the inlet. A bag tearing machine characterized by being installed above a weight and on one side of the weight. 2. A weight having a cross-sectional shape extending along the circumferential direction of a cylindrical drum is swingably supported around a support shaft passing longitudinally through the cylindrical drum, and the periphery of the outer circumference of the weight is A plurality of bag-breaking blades are mounted so as to face the inner circumferential surface of the cylindrical drum along the direction, and an input port for introducing bags to be broken into the rotating cylindrical drum is located above the weight. A bag tearing machine characterized by being installed on one side of a large weight and located upstream of the weight in the direction of rotation of the drum.