JPH11114957A - Apparatus for reducing volume of resin container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compress a resin container without receiving the resistance force against the compression of the pouring port or bottom part thereof. SOLUTION: A resin container 3 is housed in a housing container 1 so that the bottom thereof is turned downward and a pushing jig 52 is moved by a moving mechanism 4 to be pressed until the pouring port of the resin container 3 falls in the bottom part thereof. Whereupon, the resin container 3 is axially cut by a plurality of edge tools 12 to be sent into a compression container 21. The resin container 3a housed in the compression container 21 is further pressed and compressed at its bent parts by the pushing jig 62 driven by a drive mechanism 6 and the compressed container is taken out of the compression container 21 after the pushing jigs 52, 62 are returned to the original state. Therefore, the resin container 3a can be reduced in its vol. without receiving the resistance against lateral compression.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for reducing the volume of a resin container such as a PET bottle, and more particularly to a device for reducing the volume of a resin container by pressurizing and compressing.

[0002]

2. Description of the Related Art In recent years, resin containers such as PET bottles have been frequently used for various food and beverage containers. These are collected separately from other wastes for recycling, and are bulky, so that when they are collected, they are reduced in volume and then disposed of. Conventionally, as a method for reducing the volume of a resin container, there are a method of reducing the volume of the resin container by pressing with a press or a roller, a method of solidifying after melting by heating, a method of melting with a chemical, and the like. In the case of melting the container, toxic gas and odor are generated,
The method of melting with a chemical has problems such as generation of offensive odor and complicated management and treatment of the chemical.

[0003] For the above reasons, a method of reducing the volume in which a resin container is pressurized from the lateral direction at room temperature is generally used.

[0004]

In the conventional method of reducing the volume of a resin container by pressing the resin container laterally with a press or the like, the bottom portion of the resin container and the spout have lower resistance to compression than other portions. There is a problem that a strong, incompletely compressed portion remains, and a sufficient volume reduction effect cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an improved volume reduction ratio that can be compressed without receiving a resistance against the lateral compression of a bottom portion or a spout of a resin container. An object of the present invention is to provide a resin container volume reducing device.

[0006]

In order to achieve the above object, a resin container volume reducing device according to the present invention contains a plurality of blades for accommodating a resin container and cutting a cylindrical portion thereof in an axial direction. The provided storage container, the cutting mechanism for cutting the resin container, the moving mechanism connected to the storage container to move the resin container in the axial direction, and the compression mechanism for compressing the cut resin container in the axial direction. And a compression mechanism connected to the storage container.

[0007] The resin container volume reducing device of the present invention is configured as described above, and is capable of compressing without receiving a resisting force against lateral compression of the bottom portion or the spout of the resin container, thereby improving the volume reduction rate. The resin container volume reducing device can be obtained.

[0008]

1 to 6 show one embodiment of a resin container volume reducing apparatus according to the present invention. FIG. 1 is a perspective view showing the appearance, and FIG. 2 is a partial sectional view showing the structure. 3 to 6 show partial cross-sectional views. As shown in FIGS. 1 and 2, the present resin container volume reducing device has a semi-cylindrical storage door 11 that opens and closes to store the resin container 3.
And a housing container 1 provided with a blade 12 for cutting the resin container 3, and a cut in the stored resin container 3 from its bottom, and cutting the cylindrical portion in the axial direction. A moving mechanism 4 for moving the resin container 3 after cutting, and pressurizing and compressing the resin container 3 in the axial direction;
compression mechanism 2 provided with a take-out door 21a for taking out a
It is composed of FIG. 4 shows a method of attaching the storage door 11 by using a cross section taken along the line BB ′ of the storage container 1.

[0009] As shown in FIG.
Four blades 12 are provided on the inner surface of the storage container 1 by welding at 90 ° intervals in parallel with the axis. The number of the blades 12 does not need to be limited to four, and may be increased as long as there is room for mounting space. The moving mechanism 4 includes:
A pusher 52 for moving the bottom of the resin container 3 stored in the storage container 1 in the direction of the blade 12, an air cylinder 51, an air source 7, an air source 7, and a two-way switching valve (hereinafter, referred to as 2). And a drive mechanism 5 for driving the pusher 52 composed of an on-off valve 73 and an air pipe 73a.

The compression mechanism 2 includes a cut resin container 3
a, a presser 62 for pressurizing the resin container 3a, and an air cylinder 6 connected thereto.
1, a drive mechanism 6 for driving a pusher 62 composed of an air source 8, two-way valves 81 and 82, an on-off valve 83, and an air pipe 83a. FIG. 6 shows the D-
The shape of the pusher 62 is shown by a D ′ cross section.

The pressing tool 52 is provided with a groove as shown in FIG. 5 so that the cutting tool 12 does not hit.
The position is adjusted at the time of assembly, and the rotation of the shaft is prevented by a rotation stopper rod 74 in the air cylinder as shown in FIG.

In the apparatus for reducing the volume of a resin container according to the present invention, the volume of a resin container such as a PET bottle is reduced according to the following procedure.

(1) After the PET bottle is stored in the storage container, the storage door 11, the take-out door 21a, and the on-off valves 73, 83
Close.

(2) The common port 71c of the two-way valve 71 is connected to the output port 71a, and the common port 72c of the two-way valve 72 is connected to the output port 72b.

(3) The common port 81c of the two-way valve 81 is connected to the output port 81b, and the common port 82c of the two-way valve 82 is connected to the output port 82a.

(4) Open the on-off valves 73 and 83. Then
High-pressure air is supplied from the air source 7 to the air cylinder 51 via the output port 71a, and the high-pressure air is supplied to the lower side 5 of the cylinder 51c.
The pressure of 1b becomes higher than the upper side 51a, and the pusher 52 moves upward. On the other hand, from the air source 8 to the output port 82a
, High-pressure air is supplied to the air cylinder 61, the pressure on the upper side 61a of the cylinder 61c becomes higher than that on the lower side 61b, and the pusher 62 moves downward.

(5) The accommodation door 11 is opened, the resin container 3 is accommodated in the accommodation container 1 with the bottom part down, and the accommodation door 11 is closed.

(6) When the common port 71c of the two-way valve 71 is connected to the output port 71b and the common port 72c of the two-way valve 72 is connected to the output port 72a, the pusher 52 moves downward to move the resin container 3 Press the spout towards the bottom.
The resin container 3 is fed into the compression container 21 by the blade 12 while being cut in the axial direction at an interval of 90 ° at a depth of a dashed line. Then, the resin is compressed until the spout of the resin container 3 sinks into the bottom.

(7) The common port 81c of the two-way valve 81 is connected to the output port 81a, and the common port 82c of the two-way valve 82 is connected to the output port 82b. The pusher 62 moves upward and presses the resin container 3a against the inner wall of the compression container 21.
The folded portion of the resin container 3a is pressed and crushed.

(8) When the common port 71c of the two-way valve 71 is connected to the output port 71a and the common port 72c of the two-way valve 72 is connected to the output port 72b, the pusher 52 moves upward. (9) Connect the common port 81c of the two-way valve 81 to the output port 81
b, the common port 82c of the two-way valve 82 is connected to the output port 82.
When connected to a, the pusher 62 moves downward. (10) The take-out door 21a is opened, and the compressed resin container 3 is opened.
Take out a. When the compression of the resin container is subsequently performed, the above (5) to (10) are repeated.

Although the present invention has been described with reference to the case where the present resin container volume reducing device is used in a vertical state, it can be used in a horizontal state.

Although the blade 12 is welded, it can be replaced from the outside by forming it integrally with a mounting bracket in advance as shown in FIG. The air source 8 has a higher air pressure than the air source 7 and
2 is required to press the inner wall of the compression vessel 21, but the air pressure may be adjusted by using a single air source and using a pressure reducing valve. Further, the moving mechanism 4 and the compression mechanism 2
Although the air cylinders 51 and 61 are used as the drive mechanisms 5 and 6, the gear drive method using an electric motor or the fluid cylinder method using hydraulic pressure may be used.

Further, the storage container 1 and the compression container 21
The cross section is not limited to a cylindrical shape, but may be a non-cylindrical shape such as a square, for example, whereby the number of types of resin containers that can be handled can be increased.

[0024]

The resin container volume reducing device of the present invention is configured as described above, and can reduce the resistance of the bottom and the spout portion generated when the resin container is compressed in the lateral direction. The compressed portions adhere to each other, and the volume reduction rate is improved. This resin container volume reducing device can increase the efficiency of storage and transportation of the resin container at the time of disposal.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a resin container volume reducing device of the present invention.

FIG. 2 is a sectional view of one embodiment of the resin container volume reducing device of the present invention.

FIG. 3 is a view A- of the container of the resin container volume reducing device of the present invention.
It is A 'sectional drawing.

FIG. 4 is a view B- of the container of the resin container volume reducing device of the present invention.
It is B 'sectional drawing.

FIG. 5 is a cross-sectional view taken along the line CC ′ of the storage container 1 including the pusher of the resin container volume reduction device of the present invention.

FIG. 6 is a cross-sectional view taken along the line DD ′ in the compression container of the resin container volume reducing device of the present invention.

FIG. 7 is a view showing a method of attaching a blade of the resin container volume reducing device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Housing container 2 ... Compression mechanism 3, 3a ... Resin container 4 ... Moving mechanism 5, 6 ... Drive mechanism 7, 8 ... Air source 11 ... Housing door 12 ... Blade 21 ... Compression container 21a ... Extraction door 51, 61 ... Air Cylinders 52, 62: Pressing tool 71, 72, 81, 82: Two-way valve 73, 8: Opening / closing valve 73a, 83a: Air pipe 74: Rotation stop rod

Claims (1)

[Claims] 1. A housing container for housing a resin container and having a plurality of blades provided therein for cutting the cylindrical portion in the axial direction, and moving the resin container in the axial direction for cutting the resin container with the blade. A moving mechanism connected to the storage container to compress the cut resin container in an axial direction, and a compression mechanism connected to the storage container to compress the cut resin container in the axial direction. .