JP6640600B2 - Apparatus and method for reducing volume of synthetic resin bottle - Google Patents

Description

  The present invention relates to an apparatus for reducing the volume of a synthetic resin bottle such as a PET bottle and a method for reducing the volume using the same.

  Drinks in PET bottles are increasing year by year, and the need for recycling is increasing. In addition to stores such as convenience stores and supermarkets, PET bottle collection devices and collection boxes are placed in various places such as public facilities, public institutions and corporate buildings.

  If the PET bottle is collected without being crushed, it is bulky. In addition, glass bottles and empty cans other than PET bottles are frequently mixed, and it is necessary to sort PET bottles.

  Patent Literature 1 discloses a PET bottle volume reducing machine that vertically introduces a PET bottle into a compression unit having two parallel rollers and crushes the PET bottle to reduce its volume. Such a PET bottle volume reducing machine is a device that crushes the introduced PET bottle entirely including its neck. The neck of a PET bottle is generally crystallized to increase heat resistance, and is harder than the body. In order to increase the recovery rate of PET (polyethylene terephthalate) by recycling PET bottles, it is important to recycle PET bottles including the necks. However, when the volume is reduced using a volume reducing machine as disclosed in Patent Document 1, a hard neck is also crushed, and pieces of the neck scatter around. The scattered fragments cannot be collected, and there is a problem that the PET collection rate is reduced as compared with the case where the fragments are collected without reducing the volume.

  Patent Literature 2 also discloses a container volume reduction device in which the neck portion of a plastic bottle is high in strength and is compressed by a compression body while leaving the neck portion of the plastic bottle. However, there is a problem that a pair of compression bodies that are relatively close to and separated from each other as described in Patent Document 2 are restored by the restoring force of the PET bottle after being compressed. In particular, in recent years, there are various types of PET bottles such as PET bottles with excellent heat resistance for putting tea and PET bottles with excellent pressure resistance for putting carbonated drinks, and the resilience when crushed is Many are higher than before. With a plastic bottle having such a high restoring force, in order to compress with a pair of compression bodies relatively approaching and separating from each other, it is necessary to increase the compression pressure, which requires a large driving mechanism. was there.

JP 2004-1049 JP-A-10-315234

  The present invention has been made in view of the above-described conventional technology, and it is possible to reliably crush and reduce the volume of a synthetic resin bottle having a high restoring force without breaking the neck, with a small force due to rotational movement. It is an object of the present invention to provide an apparatus and a method for reducing the volume of a synthetic resin bottle, which can be selected even if a container other than the synthetic resin bottle is mixed.

  In order to solve the above-mentioned problem, a synthetic resin bottle volume reducing device according to the present invention is a synthetic volume reduction object having a body portion for storing contents and a neck portion connected to the body portion. What is claimed is: 1. A volume reducing device for crushing a resin bottle to reduce the volume thereof, comprising a pair of body openings having one or more projections on a peripheral surface for crushing the body without crushing the neck. A crushing mechanism in which crushing rollers are provided to face each other, and the object to be volume-reduced to the crushing mechanism such that a peripheral surface of the body portion opening crushing roller and a peripheral surface of the body portion are parallel to each other. And a dispensing guide mechanism for dispensing the dispensing guide, wherein the dispensing guide mechanism is displaced between an inclined state and a horizontal state in which the dispensing object is inclined and positioned so that the neck of the object to be reduced is directed downward. A mounting mechanism, and a transmission detecting means for detecting the permeability of the object to be reduced. Weight detection means for detecting the weight of the object to be volume-reduced, and the volume-reduction object determined to be a synthetic resin bottle by the transmission detection means and the weight detection means to the crushing mechanism in the horizontal state. And a rotation mechanism for loading the bottle.

  Preferably, the transmission detecting means is an optical sensor.

  An L-shaped frame body on which the positioning and mounting mechanism is placed on which the object to be reduced is placed and a tip of the neck is brought into contact with the L-shaped frame in a side view, and a lower part of the L-shaped frame body; And an eccentric pressing disk provided in the L-shaped frame, when the object to be reduced is placed, the L-shaped tip is lower than the input port side end of the L-shaped frame. When the object to be reduced is put into the crushing mechanism, a part of the L-shaped frame is pressed by rotating the eccentric pressing disk. Preferably, it rises and is displaced to a horizontal state.

  It is preferable that a pair of regulating rotary blades is provided above the pair of body portion opening crushing rollers and in parallel with the pair of body portion opening crushing rollers. This is because it prevents the object to be volume-reduced from being perturbed and assists in pushing the volume reduction target into the body-portion crushing roller.

  It is preferable that the regulating rotary blade is rotated in synchronization with the body portion opening crushing roller.

  The method for reducing the volume of a synthetic resin bottle according to the present invention is a method for reducing the volume of a synthetic resin bottle, wherein the volume of the synthetic resin bottle is reduced by using the synthetic resin bottle volume reducing device.

  ADVANTAGE OF THE INVENTION According to the volume reduction apparatus and method of the synthetic resin bottle of this invention, without destroying a neck part, with a small force by a rotary motion, even if it is a synthetic resin bottle with a high restoring force, it is reliably crushed and reduced in volume. It is possible to provide an apparatus and a method for reducing the volume of a synthetic resin bottle which can be selected even if a container other than the synthetic resin bottle is mixed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic front view which shows the volume reduction apparatus of the synthetic resin bottle of this invention. FIG. 2 is a schematic perspective view showing a crushing mechanism of the volume reduction device shown in FIG. 1. FIG. 3 is a schematic front view of the crushing mechanism of FIG. 2. FIG. 3 is a schematic plan view of the crushing mechanism of FIG. 2. FIG. 2 is a schematic perspective view illustrating a charging guide mechanism of the volume reduction device illustrated in FIG. 1. FIG. 6 is a schematic side view of the loading guide mechanism of FIG. 5. FIG. 6 is a schematic side view showing a state in which the L-shaped frame is displaced to a horizontal state in the loading guide mechanism of FIG. 5. 1 is a loading guide mechanism of the volume reduction device shown in FIG. 1, wherein the rotation mechanism horizontally moves the volume reduction target object determined to be a synthetic resin bottle by the transmission detection unit and the weight detection unit. FIG. 4 is a schematic front view showing a state of being put into a crushing mechanism in a state. 1 is a loading guide mechanism of the volume reduction device shown in FIG. 1, wherein the rotation mechanism horizontally moves the volume reduction target object determined to be not a synthetic resin bottle by the transmission detection unit and the weight detection unit. It is a schematic front view which shows a mode that it sorts to the opposite side of a crushing mechanism in a state. It is a perspective view which shows the synthetic resin bottle which reduced the volume by the synthetic resin bottle volume reduction apparatus of this invention.

  Hereinafter, embodiments of the present invention will be described. However, these embodiments are exemplarily shown, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention. In the drawings, the same members are denoted by the same reference numerals.

  In FIGS. 1 to 9, reference numeral 10 denotes a synthetic resin bottle volume reduction device of the present invention. Examples of the synthetic resin bottle include a PET bottle. The synthetic resin bottle volume reducing device 10 crushes a synthetic resin bottle 18 which is a volume reduction target 16 having a body 12 for storing contents and a neck 14 connected to the body 12. A volume reducing device for reducing the volume at least, comprising a pair of body openings having one or more projections 20a and 20b on its peripheral surface for crushing the body 12 without crushing the neck 14. A crushing mechanism 24 in which crushing rollers 22a and 22b are provided to face each other; and a crushing mechanism such that the circumferential surfaces of the body opening crushing rollers 22a and 22b and the circumferential surface of the body 12 are parallel. 24, a feeding guide mechanism 26 for feeding the object 16 to be reduced in volume, and the feeding guide mechanism 26 is tilted so that the neck portion 14 of the object 16 to be reduced is directed downward. Positioning between inclined and horizontal positions Positioning and mounting mechanism 28, transmission detecting means 30 for detecting the permeability of the object to be reduced, weight detecting means 32 for detecting the weight of the object 16 to be reduced, and transmission detecting means 30 And a rotation mechanism 34 that causes the volume reduction target 16 determined to be a synthetic resin bottle by the weight detection means 32 to enter the crushing mechanism 24 in the horizontal state.

  Further, the synthetic resin bottle volume reducing device 10 has a housing 36 and an input port 38 provided in the housing 36 (FIG. 1). Further, below the crushing mechanism 24, a storage box 39 for storing the crushed object 16 to be reduced in volume is provided (FIG. 1). The storage box 39 is configured to be able to be taken in and out of the housing 36.

  2 to 4 show the crushing mechanism 24 in more detail. A pair of body opening crushing rollers 22a and 22b having one or more protrusions 20a and 20b on the peripheral surface are provided to face each other. The pair of body portion opening crushing rollers 22a and 22b are synchronously rotated by a drive motor 40 in the direction of the arrow in FIG. 3 via gears (not shown). A slight gap is formed between the pair of body opening hole crushing rollers 22a and 22b, and the volume reduction target 16 is passed through the gap, and the projections 20a and 20b form the volume reduction target. A large number of holes are opened in 16 and the body 12 is crushed.

  A pair of regulating rotary blades 44a, 44b for preventing the volume reduction target 16 from being deflected are provided above the pair of body opening crushing rollers 22a, 22b. , 22b. The pair of regulating rotary blades 44a and 44b prevent the object 16 to be reduced from being perturbed, and assist in pushing the object 16 to be reduced into the body portion crushing roller. Become. The pair of regulating rotary blades 44a, 44b are rotated synchronously by drive motor 40 in the direction of the arrow in FIG. 3 via sprockets 42a, 42b, 46a, 46b. Then, the pair of regulating rotary blades 44a, 44b and the pair of body opening hole crushing rollers 22a, 22b are synchronously rotated via a sprocket chain (not shown).

  Further, as shown in FIG. 4, the pair of body portion opening crushing rollers 22a and 22b have relief portions 50a and 50b on the rotating shafts 48a and 48b so as not to crush the neck portion 14 of the object 16 to be reduced. Are formed. Since the relief portions 50a and 50b do not have the crushed portions 53a and 53b nor the projections 20a and 20b, the neck portion 14 is not crushed or opened. Therefore, as shown in FIG. 10, when a synthetic resin bottle 18 (a PET bottle in the illustrated example) as the volume reduction target 16 is reduced in volume by the synthetic resin bottle volume reduction device 10, only the body 12 is reduced. The hole is crushed. Therefore, there is no possibility that pieces of the neck 14 may be scattered around without destroying the neck 14. In FIG. 10, reference numeral 51 denotes a hole formed by the projections 20a and 20b.

  5 to 9 show the introduction guide mechanism 26 in more detail. The loading guide mechanism 26 includes a positioning mounting mechanism 28 which is displaced between an inclined state and a horizontal state in which the neck part 14 of the object 16 to be reduced is inclined and positioned so that the neck part 14 is downward, and the object to be reduced. The transmission detection means 30 for detecting the permeability of the object 16, the weight detection means 32 for detecting the weight of the object 16 to be reduced, and the transmission detection means 30 and the weight detection means determine that the bottle is a synthetic resin bottle. And a rotation mechanism 34 for feeding the reduced volume object 16 into the crushing mechanism 24 in the horizontal state.

  The positioning mounting mechanism 28 includes an L-shaped frame 52 on which the object 16 to be reduced is mounted, and a tip of the neck portion 14 is brought into contact with the L-shaped frame 52 in an L-shaped side view. And an eccentric pressing disk 54 provided below the body 52. As described above, when the volume-decreased object 16 input from the input port 38 is placed on the L-shaped frame 52, the input-port-side end portion 55 of the L-shaped frame 52 is located closer to the input port side end 55. Since the L-shaped tip 56 is inclined downward, the tip of the neck 14 of the volume reduction target 16 thrown in from the inlet 38 abuts on the tip 56 of the L-shaped frame 52. I'm sullen.

  When the object 16 to be reduced in volume is thrown into the crushing mechanism 24, the eccentric pressing disk 54 is rotated in the direction of the arrow in FIG. A part of 52 is pressed and rises, and is displaced to a horizontal state as shown in FIG.

  As the transmission detecting means 30, for example, an optical sensor can be suitably used. By detecting the permeability of the object 16 to be reduced by the optical sensor, if the object 16 to be reduced is a metal can, it can be detected and sorted.

  As the weight detecting means 32, for example, a load cell can be suitably used. By detecting the weight of the object 16 to be reduced by the load cell, if the object 16 to be volume-reduced is a glass bottle or a beverage remains inside, the object having a heavier weight than the synthetic resin bottle is detected. Can be sorted out. Accordingly, the weight of the synthetic resin bottle is measured in advance and a threshold value is set in the weight detection means 32, and the volume reduction target 16 having a weight exceeding the threshold value is regarded as not a synthetic resin bottle. If not put into the crushing mechanism 24, sorting can be performed even if a glass bottle or the like is mixed.

  The L-shaped frame 52 is horizontally moved in the longitudinal direction by the rotation mechanism 34 of the positioning and placing mechanism 28 for the object 16 to be reduced which is determined to be a synthetic resin bottle by the transmission detecting means 30 and the weight detecting means 32. In this state, the roller is rotated toward the crushing mechanism 24 (in the direction of the arrow in FIG. 8) by the drive of the drive motor 58, so that the circumferential surfaces of the body opening crushing rollers 22a and 22b and the circumferential surface of the body 12 are parallel. And is put into the crushing mechanism 24 (FIG. 8).

  On the other hand, the object 16 to be reduced in volume determined to be a synthetic resin bottle by the transmission detecting means 30 and the weight detecting means 32 has its L-shaped frame 52 moved in the longitudinal direction by the rotating mechanism 34 of the positioning and placing mechanism 28. The object 16 to be reduced which is not a synthetic resin bottle such as a metal can or a glass bottle is rotated by the drive motor 58 in the horizontal state toward the sorting box 60 (in the direction of the arrow in FIG. 9). It is thrown into.

  By doing so, it is possible to reliably crush and reduce the volume of a synthetic resin bottle having a high restoring force with a small force due to the rotational movement without destroying the neck portion. Sorting is possible even if containers other than bottles are mixed.

  By using the synthetic resin bottle volume reducing device 10, it is possible to reliably crush and reduce the volume of a synthetic resin bottle having a high restoring force without breaking the neck and with a small force due to the rotational movement. In addition, the present invention provides a method for reducing the volume of a synthetic resin bottle that can be selected even if a container other than the synthetic resin bottle is mixed.

10: volume reduction device for synthetic resin bottles, 12: trunk, 14: neck, 16: object to be reduced, 18: synthetic resin bottle, 20a, 20b: protrusion, 22a, 22b: collapse of trunk opening Roller, 24: crushing mechanism, 26: input guide mechanism, 28: positioning and placing mechanism, 30: transmission detecting means, 32: weight detecting means, 34: rotating mechanism, 36: housing, 38: input port, 39: housing Boxes, 40, 58: drive motor, 42a, 42b, 46a, 46b: sprocket, 44a, 44b: regulating rotary blade, 48a, 48b: rotating shaft, 50a, 50b: relief, 52: L-shaped frame, 53a , 53b: crushing part, 54: eccentric pressing disk, 55: inlet side end, 56: tip, 60: sorting box.

Claims (6)

A volume reduction device for crushing and reducing the volume of a synthetic resin bottle that is a volume reduction target having a body portion for storing contents and a neck portion connected to the body portion,
A crushing mechanism comprising a pair of torso opening crushing rollers having one or more protrusions on a peripheral surface and allowing the torso to crush the opening without crushing the neck;
A feeding guide mechanism for feeding and guiding the volume-reduced object to the crushing mechanism so that a peripheral surface of the trunk opening collapsing roller and a peripheral surface of the trunk are parallel to each other;
Has,
The positioning guide mechanism, wherein the loading guide mechanism is displaced between an inclined state and a horizontal state in which the neck of the object to be reduced is inclined and positioned so that the neck of the object to be reduced is downward,
Transmission detection means for detecting the permeability of the object to be reduced,
Weight detection means for detecting the weight of the object to be reduced,
A rotation mechanism that causes the volume reduction target object determined to be a synthetic resin bottle to be input to the crushing mechanism in the horizontal state by the transmission detection means and the weight detection means,
An apparatus for reducing the volume of a synthetic resin bottle.   2. The apparatus for reducing the volume of a synthetic resin bottle according to claim 1, wherein said transmission detecting means is an optical sensor. An L-shaped frame body in which the position of the object to be reduced is placed and the tip of the neck is brought into contact with the L-shaped frame body in an L-shaped side view; And an eccentric pressing disk provided on the
When the volume-reduced object is placed, the L-shaped tip is inclined downward from the input port side end of the L-shaped frame body,
When the object to be reduced is put into the crushing mechanism, a part of the L-shaped frame is pressed and raised by being rotated by the eccentric pressing disk, and displaced to a horizontal state. The volume reducing device for a synthetic resin bottle according to claim 1 or 2, comprising:   The synthetic resin according to any one of claims 1 to 3, wherein a pair of regulating rotary blades are provided above the pair of body portion opening crushing rollers and in parallel with the pair of body portion opening crushing rollers. Bottle volume reduction device.   The volume reducing device for a synthetic resin bottle according to claim 4, wherein the regulating rotary blade is rotated in synchronization with the body portion opening crushing roller.   A method for reducing the volume of a synthetic resin bottle, comprising reducing the volume of a synthetic resin bottle using the apparatus for reducing a volume of a synthetic resin bottle according to any one of claims 1 to 5.

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