JPH10249857A - Method for recovering plastic container and system for recovering the container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a recovering efficiency by comminuting plastic container body after previously separating unnecessary parts such as a neck part and a label by a separator. SOLUTION: Containers of vinyl chloride are manually classified and removed. And, plastic bottles are thrown in a separator, and neck parts and labels are removed from the bodies (S1). The bodies are classified from the treated materials, and unnecessary parts such as the labels are contained in a residual container (S2). The classified bodies are comminuted to chip-like state (S6), cleaned and dried (S7). Thereafter, metallic impurities are removed by utilizing a magnet or a metal detector (S8). Then, chip-like comminuted materials are classified in response to particle sizes (S9). Here, the materials of desired particle size are pelletized to pellet-like state (S10). The comminuted materials of desired particle size or less are contained in a residual container as unnecessary material, and the comminuted materials of desired particle size or more are again comminuted (S6).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a system for collecting and processing plastic containers, and more particularly to a method for collecting and recovering container materials such as polyethylene terephthalate from plastic containers such as PET bottles. The present invention relates to a separation device.

[0002]

2. Description of the Related Art Conventionally, collected plastic containers are crushed and formed into chips in order to separate unnecessary materials such as labels and mouths in order to reuse container materials of the plastic containers. Unnecessary substances were removed from the processed product by various multi-step sorting.

[0003] More specifically, after the collected plastic containers are crushed, specific gravity separation is performed, the separated materials are subjected to wind separation, and metallic impurities are removed using a magnet or the like. Was. Here, in order to maintain the purity of the container material to be finally recovered, it is common practice to first crush the treated material to a particle size suitable for each sorting before processing by wind sorting, magnets, etc. is there.

[0004]

However, in the above-mentioned recovery processing method, since a large number of steps are required, various processing apparatuses are required, equipment costs are increased, and a plurality of steps are required. , The recovery rate was reduced.

Further, in order to recover polyethylene terephthalate from PET bottles, a container made of another material such as a vinyl chloride container was selectively removed by an operator before crushing the collected plastic container.
At the same time, the workability of removing the label, the mouth and the like with a cutter knife or the like is extremely complicated. In particular, when the collected plastic container is already compressed and deformed, it is extremely difficult to remove the mouth.

Accordingly, the present invention has been made to solve such problems, and a first object of the present invention is to separate labels, mouths and other unnecessary objects from a plastic container in advance. Accordingly, it is an object of the present invention to provide a method for collecting and processing plastic containers with high collection efficiency.
A second object of the present invention is to provide a method and a system for collecting and processing a plastic container, which can easily separate unnecessary substances such as labels.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned first problem, there is provided a plastic container recovery method for recovering a container material such as polyethylene terephthalate from a plastic container such as a PET bottle so as to reuse the material. Then, the plastic container is cut at the mouth and stripped of a label or the like by the separating device 17, the plastic container main body is selected therefrom, and the selected plastic container main body is crushed.

[0008] In the recovery processing method having the above structure,
Since the mouth, the label, and the like are separated from the plastic container main body by the separating device 17 in advance, the operation of selecting the plastic container main body therefrom and removing the label, the mouth, and the like is simple. In addition, by sorting the container body, the purity of the processed material to be subjected to subsequent processing such as crushing is high, so that the subsequent processing is simple and the recovery efficiency can be increased.

The invention according to claim 2 of the present invention has been made to solve the above second problem.
The invention according to claim 2 has a structure in which the plastic container is pressed and deformed when the separation unit 17 cuts the mouth and peels off a label or the like.

[0010] In the recovery processing method according to the second aspect of the present invention, the opening formed by pressing the plastic container so as to be harder than the other portions,
Cutting cannot be performed because the gap between the rotary blade 33 and the fixed blade 59 cannot be inserted. Further, a label or the like wound around the container body by shrinkage or the like by being pressed and deformed is easily lifted, and the label can be peeled off from the raised portion very easily.

In particular, when the opening is cut off and the label or the like is peeled off by the separating device 17, the plastic container is separated from the rotating rotor 19 and the fixed blade 59 of the separating device 17.
Thus, it is preferable to adopt a configuration in which the mouth is cut off and the label or the like is peeled off by the rotary blade 33 projecting from the peripheral edge of the rotary rotor 19 and having a fixed gap L with the fixed blade 59.

According to the third aspect of the present invention, a plastic container is interposed between the fixed blade 59 and the rotary rotor 19 so that the plastic container is pressed and deformed. As a result, the mouth is cut, and the label is peeled off.

In the present invention, the "gap L (constant gap) between the rotation locus of the rotary blade 33 and the fixed blade 59" means a gap through which the plastic container can pass while being pressed and deformed. The gap L is preferably 3 mm or more, more preferably 5 mm or more, and 25 mm or more.
Or less, and more preferably 15 mm or less.

On the other hand, the recovery processing system according to the present invention
A plastic container recovery processing system for recovering a container material such as polyethylene terephthalate from a plastic container such as a PET bottle so as to reuse the plastic container. A separating step S1 for cutting and stripping off labels and the like, a sorting step S2 for sorting the plastic container body from the processed material processed in the separating step S1, and a crushing of the plastic container body sorted in the sorting step S2. And a crushing step S6.

In the recovery processing system having the above configuration, the mouth, the label, and the like are separated from the plastic container body by the separating device 17 in advance in the separation step S1, so that the separation step S2 after the separation step S1 is extremely difficult. Unnecessary substances such as labels and mouths can be easily removed and the plastic container main body can be sorted out. In addition, by the sorting of the container body in the sorting step S2, the purity of the processed material in the subsequent crushing step S6 and the like is high, so that the subsequent processing is simple and the collection efficiency can be increased.

Further, in this recovery processing system, the separating device 17 presses and deforms the plastic container so that the opening can be cut and the label or the like can be peeled off in this state. It is preferable that the filter be constituted, so that unnecessary substances such as labels and mouths can be removed very easily. In other words, by pressing and deforming the plastic container, the opening formed harder than the container main body cannot be inserted through the gap between the rotary blade 33 and the fixed blade 59, and is cut off. Since the label or the like wound on the main body is easily lifted, it can be easily peeled off.

In this recovery processing system, the separating device 17 includes a rotating rotor 19 provided with a fixed blade 59 protruding from a peripheral edge and rotatably provided,
It is also possible to adopt a configuration including a rotation locus of the rotary blade 33 and a fixed blade 59 attached at a position having a fixed gap L. By employing this configuration, the plastic container can be pressed and deformed by the fixed blade 59 and the rotating rotor 19, and the mouth can be cut off by the rotating rotating blade 33 to peel off the label.

Further, in the present invention, after the processed material processed by the separation device 17 is sorted by wind sorting and / or sieving (mechanical sorting steps S3 and S4), the plastic container body is manually sorted by an operator. It is also possible to adopt a configuration of sorting (hand sorting step S5). If this configuration is adopted, since the mouth is cut off and the labels and the like are stripped off by the separating device 17, the labels and the like separated from the plastic container main body by such a treated material by the wind separation are removed and / or The mouth and the like cut by the sieve selection can be removed. In addition, since the wind sorting and / or the sieve sorting are performed in advance in this way, there is an advantage that the subsequent manual sorting by the operator is simple.

Further, after the treatment by the separation device 17,
It is also possible to adopt a configuration in which the plastic container body is sorted by wind sorting (wind sorting step S3) and sieving sorting (sieving sorting step S4). If this configuration is adopted,
Since the mouth, the label, and the like are separated by the separation device 17, the processed material is removed by a wind separation and the like, and the mouth and the like are removed by a sieve separation. Has advantages.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a plastic container recovery processing system and a recovery processing method according to the present invention will be described with reference to FIGS. 1 to 10.
First, the separation device 17 used in the present embodiment will be described with reference to FIGS.

The separation device 17 used in the present embodiment
As shown in FIG. 1, a device frame 58 fixed to the leg members 70, 70, a device main body fixed to the device frame 58, and feeding means for feeding a plastic container to the device main body side. Consists of 43.

As shown in FIGS. 2 and 3, the feeding means 43 comprises a feeding roller 49 which rotates to feed the plastic container on the fixing plate 57 to the apparatus body side of the plastic container. .

Here, the fixing plate 57 is inclined downward toward the front (left side in FIG. 2) facing the apparatus main body, and is provided so that the plastic container can be placed thereon.

The device frame 58 is fixed to the leg member 70 while being inclined downward toward the front.
Both sides of a fixed plate 57 are fixed to 58, and the fixed plate 57 is provided to be inclined downward toward the apparatus main body.

The feeding roller 49 has eight feeding blades 50 protruding from the outer periphery thereof, and the plastic container on the fixing plate 57 is fed to the apparatus main body 17 by the feeding blades 50. It is constituted as follows. Here, the feed blade 50 is provided with a projection 50a having a sharp tip at a desired interval on an outer peripheral edge thereof. Note that the number of the feeding blades 50 can be changed as appropriate.

Further, both sides of the rotation shaft 51 of the feed roller 49 are rotatably attached to the rear end of the swing member 53,
The front end of the swing member 53 is pivotally supported by a pivot shaft 55, whereby the swing member 53 swings about the pivot shaft 55, and the feed roller 49 is configured to move up and down. ing. Here, the pivot shaft 55 is a bracket 71 projecting from the front end of the device frame 58 below the rotary shaft 51 of the feed roller 49 when located at the front side of the device main body and at the lowermost position. It is stuck to. Further, the swing member 53 is formed in an arc shape protruding upward at an intermediate portion so as not to come into contact with the apparatus main body.

Further, the feeding roller 49 has a weight sufficient to press and deform the plastic container placed on the fixing plate 57, whereby the plastic container fed by the feeding roller 49 is formed. Is primarily compressed by the weight of the feed roller 49 and fed.

Further, the feed roller 49 is connected to a feed hydraulic motor 47 having one end of a rotating shaft 51 fixed to a swing member 53 as shown in FIG. Thus, the feed roller 49 is rotated by the rotation of the feed hydraulic motor 47. Here, the feed hydraulic motor
As shown in the schematic diagram of FIG. 4, the drive of 47 is performed by a feed hydraulic pump 45 connected to an electric motor (not shown).

As shown in FIGS. 2 and 3, a fixed blade 59 is fixed to the apparatus frame 58 at the front end of the fixing plate 57 on the apparatus main body side.

The apparatus main body includes a separating device cover 18, a substantially cylindrical rotating rotor 19 rotatably mounted inside the cover 18, and a blade end 34 protruding from the peripheral edge of the rotating rotor 19. And a rotating blade 33 attached thereto.

Here, the rotating rotor 19 is rotated by a separating hydraulic motor 23, and more specifically, as shown in FIG. 1, a pulley 25a connected to one end of a rotating shaft of the separating hydraulic motor 23, A pulley 25b fixed to one end of the shaft 20 of the rotating rotor 19 is connected with a V-belt 26, and a separating hydraulic motor 23 is driven to rotate the rotating rotor.
19 is configured to rotate. The driving of the separating hydraulic motor 23 is performed by a separating hydraulic pump 22 connected to an electric motor, similarly to the feeding hydraulic pump 45, as shown in the schematic diagram of FIG. Further, the separating hydraulic motor 23 and the feeding hydraulic motor 47 are controlled such that the peripheral speed of the blade end 34 of the rotary blade 33 is faster than the peripheral speed of the feeding blade 50. The separation hydraulic pump 22 and the supply hydraulic pump 45 have a flow control valve, and are formed so that the discharge amount can be changed.

Further, as shown in FIGS. 1 and 2, the support frame 21 of the separating hydraulic motor
, The separation hydraulic motor 23 is fixed.

As shown in FIG. 3, the rotating rotor 19 has two notches in opposite sides which are cut out in a substantially L-shape to form a mounting notch 29 for mounting the rotating blade 33 thereon.
The mounting notch 29 is a mounting surface with which the side surface of the rotary blade 33 contacts.
30a and a rising surface 30b which rises at an acute angle from the mounting surface 30a, whereby the peripheral side of the rising surface 30b is formed to be inclined toward the blade end 34 with respect to the mounting surface 30a. The mounting surface 30a is provided with a screw hole 29a which can be screwed with a leg of a bolt 37 for fixing the rotary blade 33.

The rotary blade 33 housed in the mounting notch 29 so that the blade end 34 protrudes from the peripheral edge is a pressing member from the outside.
It is pressed by 31 toward the axis. The holding member 31
Is mounted so that the side surface portion comes into contact with the rising surface 30b of the mounting notch 29, and the peripheral portion is flush with the peripheral portion of the rotary rotor 19 when mounted in this manner, that is, the peripheral portion of the holding member 31. The portion and the peripheral edge of the rotating rotor 19 are formed so as to form an arc around the axis of the rotating rotor 19. The holding member 31 is formed with a concave portion that can be brought into contact with the head of the bolt 37 for fixing the rotary blade 33,
Further, a perforation hole through which the leg of the bolt 37 can be inserted is perforated from the recess. Here, the concave portion of the pressing member 31 has a sufficient depth that the head of the bolt 37 does not protrude from the surface of the pressing member 31.

Further, the rotary blade 33 is provided with a hole 35 through which the bolt 37 can be inserted, and the leg of the bolt 37 is inserted through the hole formed in the holding member 31 and the hole 35. The rotary blade 33 is screwed into the screw hole 29a of the rotary rotor 19, whereby the rotary blade 33 is sandwiched and fixed between the mounting surface 30a of the mounting notch 29 and the pressing member 31.

The hole 35 of the rotary blade 33 is provided with the bolt
The blade end of the rotary blade 33 with a width approximately the same as the outer diameter of the leg of 37
The rotary blade 33 is formed so as to be slidable toward the blade end 34 with respect to the bolt 37. By sliding in this manner, the rotary blade 33 can change the gap with the fixed blade 59,
This gap is preferably formed within a range of 3 to 25 mm. In addition, more preferably, it is 5 mm or more,
It is preferably 15 mm or less.

Further, the rotating rotor 19 is cut out in an L-shape at the peripheral edge in the rotating direction from the protruding position of the blade end 34 of the rotating blade 33, so that unnecessary cuts or unnecessary plastics such as cut mouths or plastic containers are retracted. A possible relief 28 is formed. The device cover 18 has a discharge port 38 with an open lower end.

As shown in FIG. 2, a swash plate 73 for guiding the separated material to a container 72 located in front of the leg member 70 is fixed below the discharge port 38 between the leg members 70. ing.

A substantially U-shaped chute table 67 is attached to the back of the apparatus frame 58 so as to extend from the fixed plate 57 to the back.

The separating device 17 is constructed as described above. Next, as a plastic container collecting and processing system of the present embodiment, polyethylene terephthalate is collected from a PET bottle collected by a collecting vehicle or the like using the separating device 17. FIGS. 5 and 6 show a system for performing collection processing for reuse
This will be described below with reference to FIG.

First, a plastic container collected by a collection vehicle or the like is manually separated by a worker to selectively remove a container made of another material such as a vinyl chloride container. Further, depending on the case, the plastic bottle can be color-coded in this step or another step.

Then, the PET bottle is put into the separation device 17, and the mouth and the label are removed from the container body (separation step S1).

In the processing by the separating device 17,
First, when the plastic bottle is put on the chute table 67 and pushed into the feeding means 43 side, the plastic bottle on the chute table 67 moves onto the fixed plate 57 and is fed to the rotating rotor 19 by the feeding means 43. Go. At this time, the PET bottle is pressed by the feed roller 49 and a perforation is formed.

The rotation speed of the rotary blade 33 is 1000 rpm.
Then, the rotation speed of the feed roller 49 is set to 50 rpm,
When the peripheral speed of the blade end 34 of the rotary blade 33 is 15 m / s,
The case where the peripheral speed of 50 is set to 0.5 m / s will be described. Here, in the present embodiment, as the separation device 17, the rotation speed of the rotary blade 33 is variable within a range of 300 to 1500 rpm, and the rotation speed of the feeding roller 49 is also 2.
The one that is variable in the range of 0 to 100 rpm is used.

Then, the rotating rotor 19 is fed by the feeding means 43.
While being pressed and deformed by the rotating rotor 19, the label is peeled off, and the mouth is cut off. Specifically, the label is scraped off by the rotating blade 33 that slides on the surface of the plastic bottle, and the opening formed harder than other parts is inserted through the gap between the rotating blade 33 and the fixed blade 59. Can not be cut.

In this way, the PET bottle, label, mouth, etc., which are separated and discharged from the discharge port 38 of the apparatus main body,
It will be accommodated in the container 72.

The processed products such as the container main body and the label processed by the separation device 17 and stored in the container 72 are separated from the processed material, while the unnecessary products such as the label are converted into the residual container. It is stored (sorting step S2).

Here, in the sorting step S2, FIG.
As shown in the figure, the wind sorting process S3 of the mechanical sorting process,
A sieve selection step S4 of a mechanical selection step and a manual selection step S5 by manual selection of an operator are performed.

The container body selected in the sorting step S2 is crushed into chips by the crushing device (crushing step S6).

The crushed material (polyethylene terephthalate) crushed into chips is washed and dried (washing step S7), and thereafter, metallic impurities are removed by using a magnet, a metal detector, and the like ( Metal piece removal process S
8). In the present embodiment, as described above, the separation device
Since the sorting step S2 is performed after the separation step S1 by 17, it is rare that a metal piece remains here, and even if it remains, the metal piece is small, so the metal piece removing step S8 can be omitted. is there.

The chip-like crushed material that has been washed through the above steps is then sorted according to the particle size (the particle size sorting step S).
9). Here, the crushed material having a desired particle size selected is transferred to the next pellet process S10. When it is not necessary to form pellets, the pellet step S10 is unnecessary.

The particles are sorted in the particle size sorting step S9,
The crushed material (fine powder) having a desired particle size or less is stored as unnecessary material in a residue container, and the crushed material having a desired particle size or more is returned to the crushing step S6 again.

Since the recovery processing system of this embodiment is used as described above, it has the following advantages.

In the separation step S1, the separation device 17
Is provided with a chute table 67,
By placing the PET bottle on the 67, the PET bottle can be easily put into the separation device 17. In particular, by feeding the PET bottle into the feeding section 68 composed of the chute table 67 and the fixing plate 57, it is possible to feed the rotating rotor 19 accurately by the feeding means 43.

Further, since the loading section 68 comprising the fixing plate 57 and the chute table 67 of the separation device 17 is provided to be inclined downward toward the rotating rotor 19, the thrown PET bottles are fixed to the fixing plate 57 and the chute. The plastic bottle on the fixing plate 57 can be easily fed to the rotating rotor 19 by the feeding roller 49, so that the separation operation can be performed smoothly. Moreover, since a conveyor such as a belt conveyor is not used as the lower fixing plate 57,
43 can be made smaller and lighter.

Further, since a feeding roller 49 which can move up and down, that is, is retractable with respect to the fixing plate 57 is employed as the feeding means 43, the feeding roller 49 is formed by the PET bottle placed on the fixing plate 57. It can be moved up and down to feed according to the amount and size of the PET bottles that have been loaded.
Since the PET bottle can be fed while being pressed by its own weight, the label can be accurately separated without separating the PET bottle from the rotating blade 33 when separating the label from the PET bottle. . In particular, since the PET bottle is pressed against the fixing plate 57 by the weight of the feed roller 49 in this way, the PET bottle is primarily compressed, so that it is easy to properly bite between the rotary blade 33 and the fixed blade 59. In addition, the separation operation can be reliably performed.

A swing member for mounting the feed roller 49
Since the pivot shaft 55 of 53 is located on the front side of the rotating roller 19, the feeding means 43 can be mounted compactly and the feeding roller by the swing of the swing member 53.
The vertical movement of 49 can be approximated vertically with respect to the feeding of plastic bottles. Moreover, since the pivot shaft 55 of the swing member 53 is provided forward and below the rotation shaft 51 of the feed roller 49, a force acts on the feed roller 49 in the forward direction by the PET bottle on the fixing plate 57. However, the swinging member 53 swings by the force, and the feeding roller 49 can be raised.

Further, the feeding blade 50 has a projection 50 with a sharp tip.
a is projected, and the feed roller is
Since a hole for bleeding air can be formed in the plastic container when it is fed by 49, the plastic container is liable to be pressed and deformed in the separation step S1. That is, even in a plastic container or the like having a cap at the mouth, by forming a perforation at the time of feeding by the feeding means 43, when the plastic container is compressed by the rotating rotor 19, the air inside the plastic container is compressed. This has the advantage that deformation can be prevented from being hindered, and the air inside the plastic container can be properly discharged from the formed perforations, so that the volume of the plastic container can be reduced.

Further, the feeding roller 49 has a sufficient weight to press and deform the PET bottle placed on the fixing plate 57, and feeds the PET bottle while compressing the PET bottle on the fixing plate 57 by its own weight. Therefore, it is easy to bite between the rotary blade 33 and the fixed blade 59, and the separating operation can be performed smoothly.

Also, a feed hydraulic pump 45 for rotating the feed roller 49 and a separating hydraulic pump 22 for rotating the rotary rotor 19 are separately provided, and a hydraulic circuit for the feed means 43 is provided. Because the hydraulic circuit for the separation device 17 is provided separately,
Even when the separation device 17 is stopped, the feeding means 43 can be driven arbitrarily, whereby the rotating blade 33 and the fixed blade
Even if a plastic bottle is caught between the feed roller 59 and the feed roller 59, the feed roller 49 can be rotated in the reverse direction.

The discharge rate of the feed hydraulic pump 45 and the separation hydraulic pump 22 is such that the peripheral speed of the blade end 34 of the rotary blade 33 is 15 m / s and the peripheral speed of the feed blade 50 is 0.5 m / s. / S,
In other words, the feed roller 49 is controlled to feed the PET bottle at a speed lower than the peripheral speed of the rotary blade 33.
The speed of the PET bottle passing through the gap between the fixed blade 59 and the fixed blade 59 can be adjusted to some extent, and the accuracy of separation of the label and the mouth by the rotary blade 33 can be improved. Moreover, by changing the discharge amount of the feed hydraulic pump 45 or the separating hydraulic pump 22, the peripheral speed ratio between the blade end 34 of the rotary blade 33 and the feed roller 49 is changed and set according to the work purpose. And can perform separation work according to the purpose of reuse.

The rotating rotor 19 is provided with a separated label and a relief portion 28 capable of retracting the mouth from the projecting position of the blade end 34 of the rotating blade 33 at the peripheral edge in the rotating direction. The label and the mouth escape into the escape portion 28 of the rotating rotor 19 so that the rotation of the rotating rotor 19 is not hindered. Further, the substantially L-shaped mounting notch 29 is formed so that the peripheral side of the rising surface 30b is inclined toward the blade end 34 with respect to the mounting surface 30a with which the side surface of the rotary blade 33 abuts. Rotating blade 33 attached to the notch 29 for mounting when rotating at high speed
Even if a centrifugal force acts on the pressing member 31, a reaction force from the rising surface 30 b acts on the pressing member 31 against this centrifugal force, so that the rotary blade 33 is accurately pinched by the pressing member 31. I can put it. Thereby, the force acting on the bolt 37 as the fixing means can be reduced.

The hole 35 for mounting the rotary blade 33 is a blade end.
It is formed as a long hole extending to the 34 side, and the rotary blade 33 is
Slidably provided on the blade end 34 side with respect to
Loosen 37 to release the clamp by holding member 31 and rotate blade
Slide 33 along the hole 35 to make the blade end of the rotary blade 33
By adjusting the protrusion length of 34, the fixed blade 59 and the rotary blade
The interval with 33 can be changed as appropriate. In particular, hole 35
Is formed with a width substantially the same as the outer diameter of the leg of the bolt 37, and by sliding the rotary blade 33 along the hole 35, the rotary blade 33 slides in the horizontal direction (the shaft of the rotary rotor 19). Direction).

Moreover, since the rotary blade 33 is sandwiched between the pressing members 31 and attached, even when the rotary blade 33 is slid toward the blade end 34 along the hole 35, the pressing member 31 is not required. This has the advantage of receiving the reaction force of the centrifugal force from the rising surface 30b.

Further, the rotary rotor 19 can be easily manufactured by engraving the notch 29 for attachment and the escape portion 28 adjacent to each other. In addition, the rotary blade 33 and the holding member 31 are easily attached to the mounting
This has the advantage that 33 can be mounted on the rotating rotor 19.

Further, since the apparatus main body can be mounted at a high place by the leg members 70, the capacity of the container 72 for accommodating the separated material is large, and a large number of PET bottles can be processed in one separation step S1. . Further, as described above, by providing the apparatus main body at a high position by the leg members 70, it is possible to provide a conveying means such as a conveyor at the lower part of the apparatus main body. It is also possible to configure so that the sheet is automatically transferred to S2).

In the separating device 17 of the above embodiment, the discharge port 38 is provided with a swash plate 73 for guiding the separated material to a container 72 located in front of the leg member 70. The transfer from the separation step S1 to the next step is easy because of the easy replacement and the like.

Further, since the container body which has not been crushed in the separation step S1 is separated into the peeled label and the cut mouth, the sorting operation in the subsequent sorting step S2 can be performed easily and reliably. It has the advantage that.

Further, also in the wind separation step S3 of the separation step S2, the peeled label can be mainly removed, and further, the mouth mainly cut off by the sieve selection step S4 can be removed. As described above, when sorting the processed material processed in the separation step S1, the mechanical sorting of the wind sorting step S3 and the sieving sorting step S4 is performed first, and then the manual sorting is performed (hand sorting step S5). Therefore, the labor of the worker is reduced.

In addition, when a label or the like is stuck with an adhesive or the like, there is a case where the label or the like is not completely separated from the plastic container. In this embodiment, however, a manual sorting step S5 by an operator is performed. Can be reliably removed.

However, in the case where accuracy is not so much required according to the purpose of reuse, the manual selection step S5 is omitted, and as shown in FIG. 7, the wind separation step S3 and the wind separation step S3 are performed after the separation step S1. It is also possible to carry out a sieve sorting step S4, and thus the labor of the manual sorting can be eliminated by omitting the manual sorting step S5.

Although the above-described embodiment has the above-described structure and has the above advantages, the present invention is not limited to these, and the design can be appropriately changed within the intended range of the present invention. Although the separation process is performed by the separating device 17 after collecting the plastic containers, the separating step S1 when collecting the plastic containers is also within the scope of the present invention.

That is, as shown in FIG. 8, collection is performed by using a processing device 17 mounted on a vehicle body D having a storage box 1 and a tailgate 12 for opening and closing the rear opening of the storage box 1. At this time, the separation step S1 can be performed. As described above, the separation step S1 is performed using the processing device 17 mounted on the vehicle body D, and the processed product is stored in the storage box 1 on the vehicle body D. When a plastic container is collected by a car, the plastic container can be collected in a reduced volume by pressing and deforming the plastic container.

The configuration of the processing device 17 is not limited to the above-described embodiment, and the feeding means 43 is not an essential requirement. Even when the feeding means 43 is provided, the feeding roller 49 The present invention is not limited to this, and other feeding means can be adopted. Specifically, the feeding means may be configured by a caterpillar, a conveyor, and the like provided above the fixing plate for feeding the plastic container.

Although the above embodiment has been described with respect to the case in which the loading section 68 including the fixing plate 57 and the chute table 67 is provided, the present invention is not limited to this.
For example, as shown in FIG. 9, it is also possible to provide a charging section 68 comprising a hopper 69 having an open upper side.
By using 69, there is an advantage that a larger amount of plastic containers can be charged. Note that FIG.
In the hopper 69 shown in FIG. 7, an arc groove 69a is formed on a side surface of the hopper 69 so as to allow the shaft of the feed roller 49 to be freely inserted therein so as to allow the feed roller 49 to move up and down.

Further, in the charging section 68 of the plastic container,
By providing a pushing means for pushing the plastic container inside the loading section 68 into the feeding means 43, for example, a pushing arm or the like which is swingable at one end to the lower end of the supply roller 49, the inside of the loading section 68 can be more securely provided. The plastic container can be supplied to the rotating rotor side by the supply means 43.

Further, it is preferable to adopt a structure in which the feeding means 43 is provided for primary compression of the plastic container as in the above embodiment, and there is an advantage that the separating operation can be performed smoothly. If the feed roller 49 or the above-mentioned caterpillar is urged not only by its own weight but also in the direction of the wall surface (fixed plate 57) of the loading section 68 by an elastic body such as a spring, the plastic container can be more compressed. . The feeding means 43 shown in FIG. 10 is composed of a track, and the track has a feeding blade 50 provided with a projection 50a having a sharp tip. Further, the caterpillar is provided so that the lower end side is rotatable about the upper end side so as to be able to retract with respect to the rear wall of the hopper 69, and the hopper 69 is capable of inserting a shaft portion at the lower end part of the caterpillar. An arc groove 69a is formed.

Further, a feeding roller 49 is used as the feeding means 43.
Even in the case where is adopted, the feed blade 50 is not an essential requirement. Further, even when the feeding blade 50 is provided, the design can be changed such that a V-shaped notch is formed at the outer edge.
However, the feeding means 43 is provided so that a perforation can be formed in the plastic container at the time of feeding, for example, by adopting the feeding rotor 49 having the feeding blade 50 provided with the projection 50a having a sharp tip as in the above embodiment. Is preferred.

Further, in the above-described embodiment, the description has been given of the case where the feed roller 49 and the rotary rotor 19 are rotated by the hydraulic motors 23,..., But the present invention is not limited to this. It is also possible to employ.

Even when the rotary rotor 19 and the feeding means 43 are driven by a hydraulic circuit, the separating hydraulic pump 22 and the feeding hydraulic pump 45 are coaxially connected to the same electric motor as in the above embodiment. Besides connecting, for example, rotating rotor 19
It is also possible to connect the feed hydraulic pump 45 to this shaft. In this way, if the feed hydraulic pump 45 is connected to the shaft of the rotary rotor 19 and the drive hydraulic pump 45 for driving the feed means 43 is driven, the feed means 43 Since the feeding is stopped, there is an advantage that the plastic container is not fed to the rotating rotor 19 while the rotating rotor 19 is stopped. Incidentally, the feeding means 43
In order to stop feeding by stopping rotation of the rotating rotor 19, for example, the rotation shaft 51 of the feeding roller 49 and the shaft 20 of the rotating rotor 19 can be connected by a sprocket or the like. Hydraulic pump for feeding to shaft 20 of rotor 19
If a configuration in which the hydraulic motor 47 for driving the feeding means 43 is driven by connecting the feeding means 43 is employed, there is an advantage that the feeding means 43 can be easily manufactured when it is moved up and down.

Further, in the case where the electric motor is employed as described above to drive the rotary rotor 19 and the feeding means 43, the electric motor may be an electric motor having a variable rotation speed such as an electric motor with a transmission. It is preferable to employ it. Thus, by appropriately adjusting the rotation speed of the electric motor, the peripheral speed ratio between the blade end portion 34 of the rotary blade 33 and the feed roller 49 can be changed and set as appropriate in accordance with the work purpose.

The fixed blade 59 is not limited to the one described in the above embodiment, but may be any as long as it separates unnecessary items such as labels from the plastic container with the rotary blade 33. It is also possible to adopt the end as it is as the fixed blade 59.

Further, in the present invention, the means for attaching the rotary blade 33 is not limited to the above-described embodiment, and the rotary blade 33 may be formed with a hole 35 through which the fixing means 37 can be inserted. However, the present invention is not limited to the one having a width substantially equal to the outer diameter of the leg of the fixing means 37. In the above embodiment, the hole 35 is formed as a long hole.However, the hole 35 may be extended to the other end of the blade end 34, for example. It has the advantage that detachment can be performed more easily.

Further, even in the case where the rotary blade 33 is mounted in the substantially L-shaped mounting notch 29 in which the peripheral side of the rising surface 30b is inclined toward the blade end 34 with respect to the mounting surface 30a, the above-described embodiment is applicable. The mounting notch 29 is not limited to the mounting surface 30a and the rising surface 30b is formed to rise at an acute angle with respect to the mounting surface 30a. Even if the peripheral edge of the surface 30b is inclined toward the blade end 34, there is an advantage that the rotary blade 33 can be properly held by the reaction force against the centrifugal force as described above.

Further, the main body and the supply means 43 are connected to the leg members.
Even when the swash plate is fixed on the swash plate 73, the plastic container or the like that slides down from the swash plate 73 is not limited to the container 72. You may do.

[0086]

As described above, the method and system for collecting and processing a plastic container according to the present invention have the above-described structure, and unnecessary materials such as labels are separated from the plastic container body by a separating device in advance. The work of removing unnecessary substances such as labels is simple, and the purity of the processed material to be subjected to subsequent processing such as crushing is high, so that the subsequent processing can be simplified and the recovery efficiency can be increased. It has the effect of.

Further, in the present invention, if the plastic container is configured to be pressed and deformed when the separation unit is used to cut the mouth and peel off the label or the like, when the container body is pressed and deformed, it is harder than the other parts. Since the mouth part stands up in a shape close to the original shape, it can be cut easily, and the label etc. can be easily lifted and easily peeled off, so that there is an effect that unnecessary objects such as labels can be separated very easily by the separating device. .

Further, according to the present invention, since unnecessary materials such as labels are separated from the plastic container body by the separating device in advance as described above, the workability of the subsequent manual sorting is made simple or unnecessary. It is also possible to easily recover the container material.

[Brief description of the drawings]

FIG. 1 is a rear view of a separation device used in a plastic container recovery processing system according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional side view of a main part of the separation device of the embodiment.

FIG. 4 is an explanatory view schematically showing driving of a rotary rotor and a feeding means of the separation device of the embodiment.

FIG. 5 is an overall flowchart of the plastic container recovery processing system of the embodiment.

FIG. 6 is a flowchart of a sorting step of the embodiment.

FIG. 7 is a flowchart of a sorting process according to another embodiment.

FIG. 8 is a side view of a collection vehicle equipped with a processing device used in another embodiment.

FIG. 9 is an enlarged sectional side view of a main part showing a processing apparatus used in another embodiment.

FIG. 10 is an enlarged sectional side view of a main part showing a processing apparatus used in another embodiment.

[Explanation of symbols]

17: separating device, 19: rotating rotor, 28: relief, 29: mounting notch, 30a: mounting surface, 30b: rising surface, 31: holding member, 33: rotating blade, 34: blade end, 35: hole Part, 37 ... bolt (fixing means), 38 ... discharge port, 43 ... feeding means, 49 ... feeding roller, 51 ... shaft, 53 ... swing member, 55 ... pivot shaft, 57 ...
Fixed plate, 59: fixed blade, S1: separation process, S2: sorting process, S3: wind sorting process (machine sorting process), S4: sieve sorting process (machine sorting process), S5: manual sorting process, S6
… Crushing process

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI // B29K 67:00 105: 26

Claims (10)

[Claims] The present invention relates to a method for recovering plastic containers such as polyethylene terephthalate from plastic containers such as PET bottles so as to recycle them. A method for collecting and processing a plastic container, comprising cutting and stripping a label or the like, selecting a plastic container main body therefrom, and crushing the selected plastic container main body. 2. The method according to claim 1, wherein the plastic container is pressed and deformed when the opening is cut off and the label is peeled off by the separating device (17). 3. The plastic container is separated by a separating device (17) when cutting the mouth and peeling off a label or the like.
Pressing and deforming by the rotating rotor (19) and the fixed blade (59) of (17), and protruding from the peripheral edge of the rotating rotor (19), the fixed blade (5)
3. A method for collecting and processing plastic containers according to claim 2, wherein the cutting of the mouth and peeling off of labels and the like are carried out by a rotary blade (33) having a constant gap (L) with said 9). 4. The plastic container body according to claim 1, wherein the processed material processed by the separating device (17) is sorted by wind sorting or / and sieve sorting, and then the plastic container main body is sorted by manual sorting by an operator. A method for collecting and processing a plastic container according to any of the above. 5. After treatment by the separation device (17),
The method for collecting and processing plastic containers according to any one of claims 1 to 3, wherein the plastic container main body is sorted by wind sorting and sieve sorting. 6. A plastic container recovery processing system for recovering a container material such as polyethylene terephthalate from a plastic container such as a PET bottle in order to reuse the plastic container. Separation step (S
1), a sorting step (S2) for sorting the plastic container body from the processed material treated in the separation step (S1), and a crushing step (S6) for crushing the plastic container body sorted in the sorting step. A plastic container recovery processing system, comprising: 7. The collection of a plastic container according to claim 6, wherein the separating device (17) is configured to press and deform the plastic container so as to cut the mouth and peel off a label or the like in this state. Processing system. 8. The apparatus according to claim 1, wherein the separating device is provided with a fixed blade from a peripheral portion.
(59) protruding and rotatably provided rotatable rotor
8. A plastic container recovery system according to claim 7, further comprising: a fixed blade (59) mounted at a position having a fixed gap (L) with the rotation locus of said rotary blade (33). . 9. The sorting step (S2) includes a mechanical sorting step (S3, S4) of mechanically sorting by wind or / and a sieve; and an operator's sorting after the mechanical sorting step (S3, S4). 9. The plastic container collecting and processing system according to claim 6, further comprising a manual sorting step (S5) of sorting the plastic container body by manual sorting. 10. The sorting step (S2) includes a wind sorting step (S3) for removing stripped labels and the like by wind force, and a sieve sorting step (S4) for removing cut mouths and the like by a sieve. The plastic container recovery system according to any one of claims 6 to 8, comprising: