JPH0232026B2 - HATAIKI - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bag-breaking machine, and more specifically, it extracts garbage from collected plastic bags and the like before crushing the garbage, and aims to recycle it. It is used in the field of processing equipment, and is designed to tear thrown garbage bags, etc., by a weight that swings in the space inside the blade, which is connected in a circular ring without being attached to a cylindrical drum. It is related to bag machines.

[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 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 the work of tearing such bags is not easy, it is desired to mechanize the process, and for example, a bag-breaking device for separately collected garbage has been proposed in Japanese Patent Application Laid-open No. 147161/1983.
This has a large number of protruding claws attached to the inner surface of a rotating cylindrical 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 bag or the like is moved in the rotational direction of the drum by the protruding claws, and when it touches the dam plate, its movement is blocked, so that the protruding claws move at that time. Plastic bags are torn apart. Since the drum is slightly inclined toward the discharge port, the separated garbage moves within the cylindrical drum 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 widens along the circumferential direction of the cylindrical drum, the time that the plastic bag is caught between the dam plate and the protruding claws on the inner surface of the cylindrical drum is shortened, and the bag is If you move through the stop plate, the bag will no longer be torn,
The bag is often not crushed enough by the dam plate. 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. In addition, the trash that has been broken into bags must be moved all the way to the outlet.
There is a problem in that the waste cannot be discharged outside the machine quickly, which limits processing capacity.

[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 possible to efficiently tear bags with an inexpensive and extremely simple structure, and further, to provide a bag tearing machine that can quickly discharge the garbage inside the torn plastic bags to the outside of the machine. be.

[Structure of the invention]

The features of the bag tearing machine of the present invention will be explained with reference to the reference numerals cited in FIG.
A circular blade 3 is rotatably supported by a reinforcing bar 4 extending vertically therethrough. In the internal space 3B formed by the annular blade 3, a weight 16 having a cross-sectional shape extending along the inner circumferential surface 3m of the blade 3 is attached to a support shaft 15 that extends vertically through the space 3B inside the blade 3. The outer circumferential surface 16a of the weight 16 is
A plurality of bag-breaking blades 17 are mounted so as to face the inner circumferential surface 3m of the blade 3 along the circumferential direction.

[Effect]

The circular blade 3 is supported in a helical manner by a reinforcing bar 4 running longitudinally therethrough, and when it is rotationally driven, a plastic bag 1 is placed inside the circular blade 3.
2 is inserted. The plastic bag in which it was thrown 12
As the annular blade 3 rotates, it is moved in the circumferential direction so as to be hooked on a large number of protruding pawls 13 provided on the inner circumferential surface 3m of the blade. Due to the plastic bag 12 inserted between the swingable weight 16 and the circular blade 3, the weight 16 also rotates about the support shaft 15 in the moving direction of the plastic bag 12. When the weight 16 is swung back by its own weight, a large number of bag tearing blades 17 attached to the weight 16 having a wide cross-sectional shape tear the plastic bag 12. The torn plastic bag 12 and the garbage 11 therein are discharged so as to fall directly from the gap 3A of the annular blade 3 to a collection chute 14 located below the outside of the machine.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. FIG. 1 is an overall vertical sectional view of the bag tearing machine, in which two machine end rotating parts 2A and 2B are rotatably supported by front and rear rollers 1A and 1B, and between them there is a Instead of being attached to a cylindrical drum or the like, the bare spiral-shaped circular blade 3 is attached via an appropriate number of vertical reinforcing bars 4. There are a front wall 5 and a rear wall 6 on the side surfaces of the end rotation parts 2A and 2B, and the front wall 5 has an opening 10 through which the input chute 9 on the support member 8 fixedly erected on the base 7 faces. It is formed. The end rotating parts 2A and 2B are rotated by a drive means (not shown), and the circular blade 3, which is installed in a horizontal state, for example, is also rotated in the same direction. In addition, in order to increase the rigidity of the annular blade 3, for example, three reinforcing bars 4 are provided between the end rotating parts 2A and 2B, and the reinforcing bars 4 are provided to increase the rigidity of the annular blade 3 in the circumferential direction.
It is reinforced at 120 degree intervals and transmits the rotation of the end rotating parts 2A, 2B to the annular blade 3.

The inner peripheral surface of this spiral blade 3 is covered with dust 1.
A large number of protruding pawls 13 are provided for moving a plastic bag 12 containing 1, etc. in the rotational direction. The interval between the adjacent blades 3a and 3b is set so that the unbroken plastic bag rests on the blade 3 without falling. It should be noted that the number of threads of the blade 3 may be one thread or multiple threads of two or more without any problem. Since such a blade 3 is not attached to the inner peripheral surface of the cylindrical drum as described above, the trash and most of the plastic bags 12 after the bags are torn are directly transferred to the blade 3. It falls from gap 3A. Therefore, below the blade 3 is a collection chute 1 that receives them.
4 is provided as necessary. Further, a space 6A is secured between the blade 3 and the machine end rotating section 2B, and the empty plastic bag 12a or cardboard box that cannot fall through the above-mentioned gap 3A is rotated by the machine end rotation part 3. After being moved toward the section 2B, it can be discharged from the space 6A. For this purpose, a chute 14A is provided below the space 6A to receive torn empty plastic bags 12a and the like without containing the garbage 11.

In the internal space 3B formed by such a spiral blade 3, as shown in FIG.
A support shaft 15 that passes through the blade 3 vertically is installed below n, and a weight 1 having a cross-sectional shape extending along the inner peripheral surface 3m of the blade 3 is attached to the support shaft 15.
6 is swingably supported. A plurality of bag-breaking blades 17 are attached along the circumferential direction of the outer circumferential surface 16a of the weight 16 so as to face the inner circumferential surface 3m of the blade 3. Note that the support shaft 15 is the first
A bearing 18 that also passes through the front wall 5, support member 8, and rear wall 6 shown in the figure, and has both ends provided on the base 7.
A, supported by 18B. This support shaft 15
The weight 16 fixed to the
In the example shown in FIG. 3, the cross section is approximately fan-shaped, but in short, there are multiple bag-breaking blades in the circumferential direction of the outer periphery that rotate to scrape the top of the plastic bag 12 on the blade 3. 17 can be attached.

The support shaft 15 mentioned above is the central axis 3n of the blade 3.
Since it is located lower, when the plastic bag 12 is inserted between the weight 16 and the blade 3 and the weight 16 rotates together with the blade 3, the distance between the weight 16 and the inner peripheral surface 3m of the blade is It gradually opens as shown by the imaginary line in FIG. That is, if the plastic bag 12 rises too high, the contact force with the weight 16 will be weakened, and the weight 16 will be swung back by its own weight, and at this time, the plurality of bag-breaking blades 17 lined up in the circumferential direction will break. It acts to tear the top of the plastic bag 12.

Incidentally, if the bag-breaking blade 17 is also arranged in the axial direction of the weight 16 as shown in FIG. 1, one weight 16 can break a plurality of plastic bags 12 at once. Further, the shape may be a sharp one or a rectangular shape as shown in the figure. Also, it may be attached radially from the support shaft 15 of the weight 16, but if it is tilted in the rotation direction 2M of the blade 3 as shown in the figure, plastic bags, strings, etc. will not get tangled when swinging back. It's convenient because there isn't. Second
The reason why the weight 16 is located to the left of the central axis 3n in the figure is because the loading opening 10 is provided on the right side thereof.

Next, the operation of the above embodiment will be explained. When the plastic bags 12 containing garbage 11 are sequentially introduced from the input chute 9 into the internal space 3B of the blade 3, they are attached to the annular blade 3 as the end rotation parts 2A, 2B rotate. It moves in the circumferential direction by the protruding pawls 13 that are attached to it. Since the weight 16 hangs swingably from the support shaft 15 regardless of the rotation of the blade 3, the plastic bag 1 is attached thereto.
2, the weight 16 is sandwiched between the bag-breaking blade 17 on the outer periphery of the blade 3 and the annular blade 3, and the weight 16 rotates in the rotation direction 2M of the blade 3 due to the contact force. As the plastic bag 12 moves to be further lifted by the protruding pawl 13, the gap between the bag tearing blade 17 and the annular blade 3 becomes wider, the contact force weakens, and the weight 16 is suddenly lifted by its own weight. be thrown back. As a result, a plurality of bag tearing blades 17 lined up on the outer circumferential surface rub against the top of the plastic bag 12 and tear it.

The trash 11 is taken out from the torn plastic bag 12, passes through the gap 3A of the blade 3, and falls into the collection chute 14. The same operation as described above is repeated for the plastic bag 12 that is inserted later. In this way, when the bag is torn, the garbage 11 and the like are immediately discharged from the gap 3A of the blade 3, and the empty plastic bag 12a is extremely lightweight.
Other than moving the garbage toward the space 6A, there is no need to move the garbage toward the discharge port as described in the related art section, and no power is consumed for this purpose. In addition, reusable items such as empty bottles and empty cans that can be used as scrap are separated and removed, and other garbage is later reduced in volume by being put through a crusher, and is incinerated if necessary. It is then discarded. As previously mentioned,
If the bag tearing blade 17 is installed at an angle, the strings binding the plastic bag 12 and the plastic bag itself can be prevented from becoming entangled when the weight 16 is swung back.
The plastic bags 12 thrown in one after another can be broken.

〔Effect of the invention〕

As can be seen from the detailed description of the embodiments above, the present invention includes a circular blade which has protruding edges on its inner circumferential surface and is supported in a helical manner by a reinforcing bar running vertically. A weight with a shape extending along the inner circumferential surface of the blade in the internal space is swingably supported on a support shaft, and a plurality of bag-breaking blades are attached along the circumferential direction of the outer circumferential surface of the weight. Bags and the like can be torn extremely easily and quickly, and garbage can be quickly discharged outside the machine, reducing the accumulation of plastic bags inside the machine and improving processing capacity. Furthermore, since there is no drum around the outer periphery of the blade, the number of parts and the weight of the device can be reduced, resulting in an inexpensive device and extremely practical effects that require less power to operate.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a bag tearing machine according to the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a sectional view of an embodiment of the weight. 3...Blade, 3B...Internal space, 3m...Inner circumferential surface, 4...Reinforcement bar, 13...Protruding claw, 15...Support shaft, 16...Weight, 16a...Outer circumferential surface, 17...Bag-breaking blade.

Claims (1)

[Scope of Claims] 1. A circular blade having protruding claws on its inner circumferential surface and supported in a spiral by a reinforcing bar running vertically is rotatably provided, and an internal space formed by the circular blade. A weight having a cross-sectional shape extending along the inner circumferential surface of the blade is swingably supported around a support shaft passing vertically through the space inside the blade, and the outer circumferential surface of the weight A bag tearing machine characterized in that a plurality of bag tearing blades are mounted so as to face an inner circumferential surface of the blade along the circumferential direction of the bag.