JPS649052B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a bag-breaking machine, and more specifically, it uses a weighted bag-breaking blade that swings within a rotating drum to remove thrown garbage bags, etc. Concerning a bag-breaking machine designed to tear bags. 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 attempts to recycle household garbage that has been packed in bags and collected.

(b) Prior Art Generally, garbage generated from households is stored in plastic bags or cardboard boxes, and the garbage also includes reusable empty bottles and cans.

Therefore, a bag tearing machine is used to tear plastic bags and cardboard boxes as a preparatory work for taking out the reusable items. By the way, conventional bag-breaking machines have a spiral blade installed inside a rotating drum, and tear plastic bags, etc. placed on the blade, using a weighted bag-breaking blade that is swingably suspended. When the bag or the like is torn, the empty bottle or the like inside falls into the spiral groove between the blades, and is then transported to the discharge port by the blade.

However, with the above structure, the bottom of the spiral groove is the inner surface of the metal rotating drum, so if an empty bottle or the like falls into the spiral groove, it may hit the inner surface of the rotating drum, causing noise and causing damage. In addition, even when being transported by blades, they are rolled at the bottom of the spiral groove, which generates noise and can cause damage, causing noise pollution and making it difficult to collect reusable empty bottles. There was a problem.

(c) Problems to be Solved by the Invention The present invention solves the above-mentioned problems by providing an elastic member in tension at the bottom of the spiral groove formed by the spiral blade, that is, on the inner surface of the rotating drum.

(d) Means for Solving the Problems The present invention provides a rotary drum having an input port and a discharge port at the front and rear, and a blade having protruding claws is spirally provided on the inner surface of the rotating drum, and the bottom part of the spiral groove formed by the blade is An elastic member is stretched over the rotating drum, and a support shaft is provided passing through the rotating drum, and a weight having a bag-breaking blade is placed close to the blade and swingably supported on the support shaft. It is related to bag machines.

(e) Examples 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 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 6 is attached to the inner circumference thereof. This has a large number of protruding claws 9 on the inner edge for moving a plastic bag 8 containing garbage 7 in the rotational direction, and the interval between adjacent blades 6, 6 is narrow on the input port 4a side. It is wider on the exit 5a side. In the illustrated example, the plastic bag 8 has two spirals near the weight 12, which will be described later, and is not torn.
etc. are 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.

The bottom of the spiral groove 6a, that is, the rotating drum 2
An elastic member 14 made of rubber or the like is stretched on the inner surface, and even if an empty bottle or the like falls into the spiral groove 6a from inside the plastic bag 8, no noise is generated and damage is prevented. can. Further, noise and damage can be prevented even during transfer by the blade 6.

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.

The support shaft 10 also passes through the front wall 4 and the rear wall 5 shown in FIG. 1, and both ends thereof are supported by bearings 13A and 13B provided on the base 3. Since the support shaft 10 is located below the central axis 2a of the rotating drum 2, the plastic bag 8 is inserted between the weight 12 and the blade 6, and the weight 12 is attached to the rotating drum 2.
When rotated together, the weight 12 and the blade inner end 6b
The distance between the two ends gradually increases as shown by the imaginary line in FIG. That is, when the plastic bag 8 rises too high, the contact force with the weight 12 is weakened, and as a result, the weight 12 is swung back forcefully by its own weight, and at this time, the plurality of bag-breaking blades 11 arranged in the circumferential direction are
acts to tear the top 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. Further, the shape may be a sharp one or a rectangular shape as shown in the figure. Further, it may be attached radially from the support shaft 10 of the weight 12, but as shown in the figure, the rotation direction 2A of the rotating drum 2
It is convenient to tilt it at an angle so that 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. I can do it. Plastic bags 8 containing garbage 7 sequentially from the input port 4a
When the blades are introduced, they are moved in the circumferential direction by the protruding pawls 9 attached to the spiral blade 6 as the rotary drum 2 rotates. Rotating drum 2
Since the weight 12 hangs swingably from the support shaft 10 regardless of the rotation of the weight 12, when the plastic bag 8 reaches there, it is caught between the bag-breaking blade 11 and the spiral blade 6 on the outer periphery of the weight 12. 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 claw 9, the bag tearing blade 11
When the distance between the blade 6 and the spiral blade 6 becomes wider and the contact force weakens, the weight 12 is suddenly swung back by its own weight. 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.

At this time, since the elastic member 14 is stretched over the bottom of the spiral groove 6a, no noise is generated even if the garbage 7 falls into the spiral groove 6a, and damage can also be prevented.

Thereafter, the garbage 7 is moved toward the discharge port 5a by the spiral blade 6, and is discharged from the discharge port 5a through the chute 5b.

Even in this case, the garbage 7 rolls in the spiral groove 6a, but since the elastic member 14 is stretched over the bottom of the spiral groove 6a, noise and damage are prevented.

(f) Effect of the invention As described above, the present invention has an elastic member stretched at the bottom of the spiral groove formed by the spiral blade, so that when garbage falls into the spiral groove or moves inside the spiral groove, When doing so, it is possible to reliably prevent the generation of noise and damage to trash, which is the case with conventional methods.

[Brief explanation of drawings]

FIG. 1 is an overall sectional view, and FIG. 2 is a sectional view taken along the line AA in FIG. 1. 2 is a rotating drum, 4a is an inlet, 5a is an outlet, 6 is a blade, 10 is a support shaft, 11 is a bag tearing blade, 12 is a weight, and 14 is an elastic member.

Claims (1)

[Claims] 1. A blade having protruding claws is spirally provided on the inner surface of a rotating drum having an input port and a discharge port at the front and rear, and an elastic member is stretched at the bottom of the spiral groove formed by the blade, and on the other hand, a blade that extends through the rotating drum A bag tearing machine is provided with a support shaft, and a weight having a bag tearing blade is placed close to the blade and swingably supported on the support shaft.