JP2001030244A - Regeneration treatment apparatus for resin part having coating film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the peeling treatment efficiency of a coating film by preventing re-adhesion of an once peeled coating film powder. SOLUTION: Crushed pieces P charged in a treatment tank 1 are stirred to be raised in temp. by the mutual friction and collision thereof and the coating films on the surfaces of the crushed pieces P are peeled while crushed. A powder discharge port 8 having a reticulated structure 7 is formed to the part always coming into contact with the crushed pieces P of a buffle duct 6 for altering the flow direction of the crushed pieces P during stirring to be connected to an exhaust device 2. The crushed pieces P during stirring and flowing impinge against the reticulated structure 7 and only a powder component such as a peeled coating film powder is discharged to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reprocessing a coated thermoplastic resin part, and more particularly to a method for reusing a decorative resin coated waste material such as an automobile bumper. The present invention relates to an apparatus for removing a coating film on the surface.

[0002]

2. Description of the Related Art As a technique for regenerating a thermoplastic resin part represented by an automobile bumper, a metal having a size of, for example, about 10 mm on a side without removing a coating film after removing a metal or other dissimilar parts is used. In addition to the method of re-grinding and granulating, and reusing it as a raw material for lower-grade parts whose appearance quality is not so problematic, in order to improve the reclaim quality, the above-mentioned crushed pieces are treated with a solvent such as alkali or organic hydrochloric acid. And a method in which the crushed pieces are put into a predetermined treatment tank and stirred at high speed to peel the coating film (for example, Japanese Patent Laid-Open No.
-58383).

[0003] In the above-mentioned method of peeling a coating film by stirring, the temperature of the resin itself is raised to a temperature close to a temperature immediately before the resin itself softens or melts due to mutual friction or mutual collision heat of the crushed pieces accompanying the stirring, and the temperature is raised. Basically, the coating film is peeled off by bringing the crushed pieces, whose surface coating film is easily peeled off by temperature, into contact with each other in a form such as barrel finish polishing.

[0004]

In the method of peeling a coating film using a solvent, the treatment of the solvent after the treatment becomes a problem, and washing with water is necessary after the coating film is peeled off. This is undesirable.

In the method of peeling the coating film only by stirring, the peeled coating film and the resin cannot be completely separated in the treatment tank. Therefore, after the treatment, the coating film and the resin are separated in a separate step. Work must be performed, which increases man-hours and costs.

[0006] In addition, the coating film once peeled is continuously stirred together with the crushed pieces during the processing time.
It is expected that the peeled coating film not only prevents the unpeeled crushed pieces from peeling off as a cushion but also causes the once peeled coating film to adhere to the crushed pieces again. Efficiency deteriorates and the processing time becomes unnecessarily long, which is not preferable.

Further, when the treatment time is long as described above, the degree of crushing not only the coating film on the surface of the crushed pieces but also the resin layer itself into a powdery form increases, and the original purpose of resin recovery is Efficiency will be reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the efficiency in a short period of time without incurring the problem of upsizing of equipment and secondary treatment of waste liquid. It is an object of the present invention to provide a reprocessing apparatus capable of removing a coating film.

[0009]

According to the first aspect of the present invention, a crushed piece of a thermoplastic resin part having a coating film, which has been crushed to a predetermined size in advance, is accommodated in a processing tank, and the crushed piece is placed on the bottom of the processing tank. An apparatus for regenerating a resin part with a coating film in which a crushed piece is agitated by an arranged rotating member and a coating film is peeled off by mutual frictional collision between the crushed pieces. While a return member is provided to positively change the flow direction of the crushed pieces gathered at the outer peripheral portion of the tank by the centrifugal force accompanying the above from the upward direction to the downward direction, the flowing crushed pieces of the return members are in direct contact with each other. In part,
While forming a powder outlet which allows the passage of the powder component separated from the crushed piece while preventing the passage of the crushed piece itself, the powder outlet is exposed to the outside of the treatment tank, and the pulverization by the centrifugal force is performed. It is characterized in that the powder component is positively separated from the crushed pieces by the flow of the pieces themselves and discharged to the outside of the treatment tank.

In this case, the powder discharge port is connected to suction means outside the processing tank, and the powder component separated from the crushed pieces is forcibly discharged from the powder discharge port. It is preferable from the viewpoint of the efficiency of separation of the powder component that the liquid be sucked and discharged.

The powder discharge port for preventing the passage of the above-mentioned crushed pieces themselves and allowing the passage of the powder component peeled from the crushed pieces is constituted by, for example, a mesh-like one such as a wire mesh or a punching metal. It is desirable to do. In particular, depending on the size of the mesh of the powder discharge port, clogging is likely to occur due to the adhesion of the powder component. For example, a fluororesin coating is applied to the mesh portion, or fine vibration is applied to the mesh portion. Is more desirable.

Therefore, according to the first and second aspects of the present invention, the coating film on the surface of the crushed piece is gradually peeled off while being crushed into a powder due to mutual frictional collision or the like caused by stirring, and is stirred together with the crushed piece. However, since the crushed pieces collide with the return member in the process of continuing the flow by stirring, the powder component in which even a part of the coating film powder and the resin layer has become powdery has a small specific gravity, so that the crushed pieces are small. Away from the processing tank through a powder outlet formed by a wire mesh or punched metal. As a result, a situation in which the powder components such as the coating film powder once peeled adhere to the crushed pieces again does not occur.

According to a third aspect of the present invention, a crushed piece of a thermoplastic resin part having a coating film, which has been crushed to a predetermined size in advance, is accommodated in a processing tank, and crushed by a rotating member disposed at the bottom of the processing tank. This is a device for regenerating a coated resin part in which pieces are agitated so that the coating film is peeled off by mutual frictional collision between the crushed pieces. By injecting air from the oblique direction toward the pieces, and by generating a swirling air flow that flows upward from below in the processing tank while circling in the processing tank, the powder component separated from the crushed pieces is removed. It is characterized in that it is positively suspended in the upper space in the processing tank, and the suspended powder component is sucked and discharged to the outside from a discharge opening formed in the upper part of the processing tank.

In this case, it is desirable to use so-called dry air from which humidity has been removed in advance as the air to be blown on the crushed pieces, so that the crushed pieces themselves can be easily dried, and the powder component adhering to the crushed pieces can be used. Can be easily separated.

Therefore, according to the third aspect of the present invention, the coating film on the surface of the crushed piece is gradually peeled off while being crushed into powder due to mutual frictional collision or the like caused by stirring, and is stirred together with the crushed piece. However, since the crushed pieces receive air injection in the process of continuing the flow by stirring,
The powder component in which even the coating film powder and even a part of the resin layer became powdery is blown off from the crushed pieces due to its low specific gravity, and rides on the swirling air flow in the processing tank to the upper space in the tank. Float. The outlet is opened in the upper space of the processing tank, and the suction force acts on the outlet, so that the powder component is discharged to the outside of the processing tank.

According to a fourth aspect of the present invention, there is provided the processing tank according to the third aspect, wherein a shelf-like portion is formed in an upper portion in the processing tank, and a part of the powder component floating in the upper space in the processing tank. Are collected by natural fall on the shelf.

Therefore, in the invention according to the fourth aspect, part of the powder component which is not discharged by the forced discharge while floating to the upper space in the processing tank while riding on the swirling airflow is naturally deposited on the shelf. Collected by falling and collected.

In this case, if the inner diameter of the upper end portion of the processing tank is increased and a shelf-like portion is formed in the large-diameter portion, the large-diameter member has a relatively large diameter. Since the flow of the swirling air flow becomes gentler, the collection efficiency of the powder component by the natural fall on the shelf portion is further improved.

According to a sixth aspect of the present invention, a crushed piece of a thermoplastic resin part having a coating film, which has been crushed to a predetermined size in advance, is accommodated in a processing tank, and crushed by a rotating member disposed at the bottom of the processing tank. An apparatus for regenerating a coated resin part in which the pieces are agitated to peel off the coating by mutual frictional collision between the crushed pieces, wherein the apparatus is located above a rotating member in the processing tank and An air injection pipe is arranged at a position in contact with the crushed pieces gathered in the outer peripheral portion of the tank by centrifugal flow accompanying stirring, and air is jetted toward the crushed pieces from an injection nozzle connected to the air injection pipe. At the same time, by injecting air from an injection nozzle for swirling air flow generation to generate a swirling air flow that flows upward from below in the processing tank while circulating in the processing tank, the air is separated from the crushed pieces. It is characterized in that the powder component is positively suspended in the upper space in the processing tank, and the floating powder component is sucked and discharged to the outside from a discharge opening formed in the upper part of the processing tank. .

In this case, by cooling the air flowing through the air injection pipe in advance, the rise in the temperature of the pipe wall is suppressed, and the crushed pieces that have been heated to near the melting temperature adhere to the outer peripheral surface of the pipe. Can be prevented beforehand.

Therefore, in the invention according to the sixth aspect, the air injection pipe is arranged so as to repeatedly collide with the crushed pieces during stirring. Therefore, the pulverization by collision between the air injection pipe and the pulverized pieces is performed. Separation efficiency of the coating film on one surface and separation efficiency of the pulverized pieces and powder components such as coating film powder are further promoted. Then, the powder component separated from the crushed pieces is blown off from the crushed pieces by receiving an air jet, and then floats in the upper space in the processing tank by riding a swirling air flow, and finally the upper part of the processing tank. Is forcibly sucked and discharged from the discharge port.

[0022]

According to the first aspect of the present invention, the powder components such as the coating film powder once peeled from the crushed pieces are removed from the crushed pieces at the powder discharge port provided in the return member in the processing tank. Separated and quickly discharged to the outside of the processing tank, the once separated coating film does not adhere to the crushed pieces again, improving the coating film stripping efficiency. Since the work of separating the peeled coating film from the crushed pieces can be abolished or greatly simplified, the number of steps and the cost can be reduced. In addition, since the processing time can be shortened by improving the above-mentioned coating film peeling efficiency, the degree of crushing even a part of the resin layer into a powdery form is significantly reduced, and the original purpose of resin recovery efficiency is further improved. Has the effect of doing

According to the second aspect of the present invention, since the powder component such as the coating film powder is forcibly sucked and discharged from the powder discharge port, the same effect as the first aspect of the present invention can be obtained. In addition, there is an effect that the separation efficiency between the crushed pieces and the powder components such as the coating film powder is further improved.

According to the third aspect of the present invention, the processing tank is formed by blowing off powder components such as coating powder adhering to the crushed pieces by air jetting, and then placing them on a swirling air stream to float upward. To forcibly eject and discharge from the top of the
An effect similar to that of the first aspect is obtained.

According to the fourth aspect of the invention, in addition to the method of forcibly sucking and discharging the powder component by floating the powder component upward, the method of collecting the powder component by natural fall on the shelf portion is used. Since they are used together, in addition to the same effect as the invention described in claim 3, there is an effect that the efficiency of separating and collecting powder components such as coating film powder is further improved.

According to the fifth aspect of the present invention, in adopting a method of collecting powder components by natural fall on a shelf,
Since the diameter of the shelf portion is larger than that of the processing tank, the swirling air flow is gentle in the portion having the larger diameter. In addition to the same effect as the invention described in claim 4, There is an effect that the collection efficiency of the powder component in the shelf portion is further improved.

According to the sixth aspect of the present invention, it is assumed that the powder component is suspended upward and the suction and discharge of the powder component is forcibly performed. In addition to the same effect as the first aspect of the present invention, not only the peeling efficiency of the coating film due to the above-mentioned collision action but also the powder component such as the peeled coating film powder and the pulverization This has the effect of further improving the efficiency of separation from the pieces.

[0028]

1 and 2 show a first preferred embodiment of a processing apparatus according to the present invention, in which a numeral 1 designates a thermoplastic resin part having a predetermined coating film through an inlet (not shown). A substantially cylindrical hermetic treatment tank 2 for performing the coating film peeling treatment of the crushed pieces P by being supplied with the crushed pieces P was connected to an exhaust duct 3 attached to the side of the processing tank 1. Exhaust device.

For example, a thermoplastic resin component waste material which has been subjected to a predetermined decorative coating such as a polypropylene automobile bumper has a side with a coating film of 5 mm in a previous crushing step. Pulverized pieces P about 30mm in size
After being pulverized into the processing tank 1, a predetermined amount is charged by a pneumatic transport type or screw type conveyor or a belt conveyor (not shown).

As shown in FIG. 2, a rotating disk 4 is provided at the inner bottom of the processing tank 1 so as to cover the entire bottom surface thereof. A plurality of blades 4a are attached to the upper surface of the rotating disk 4, and the rotating disk 4 is driven to rotate by a motor 5.

When a predetermined amount of the crushed pieces P is put into the processing tank 1, the rotary disk 4 is driven to rotate, and the crushed pieces P are stirred. Due to the agitation, the crushed pieces P are heated to a temperature immediately before melting due to mutual frictional collision between the pieces P or frictional collision with the inner wall surface of the tank or the rotating disk 4, etc., and adhesion of the coating film on the surface thereof The coating film having reduced force becomes a powder component while being finely crushed together with a part of the resin layer, and is peeled off from the resin layer itself.

A baffle duct 6 as a return member having a substantially hollow triangular cross section is disposed at the center in the height direction of the body 1a of the inner peripheral surface of the processing tank 1. The baffle duct 6 is provided on the entire inner circumference of the processing tank 1 or partially on the inner circumference thereof, so that the crushed pieces P stirred by the rotating disk 4 are gathered to the outer circumference inside the tank by the centrifugal force. As a result, the baffle duct 6 serves to actively change the flow direction from the upward direction to the downward direction as shown by the arrow Q in FIG. have.

The lower surface of the baffle duct 6, that is, the portion always contacted by the crushed pieces P, which is agitated and flown, is a mesh structure 7 such as a wire mesh, a screen or a punched metal.
The net-like structure 7 is opened substantially as a powder discharge port 8 inside the processing tank 1, and the baffle duct 6 itself is connected to the exhaust duct 3.

Here, the mesh structure 7 prevents the crushed pieces P from passing while preventing the crushed pieces P from passing through, as described later.
Since only the powder component such as the coating film powder peeled off from the substrate is passed through, the size of the mesh is, for example, 1 to 5 mm.
It is desirable to be about. In order to prevent the powder component from adhering to the network structure 7, the network structure 7 itself is coated with a fluororesin,
It is good to give a slight vibration to.

On the other hand, the exhaust device 2 is composed of a dust collecting device 9, an exhaust blower 10 and an exhaust tube 11, and the suction force for exhausting by the exhaust device 2 is applied to the powder discharge port of the baffle duct 6. 8, the exhaust device 2 is evacuated in parallel with the coating film peeling process in the processing tank 1 as described later.

Therefore, according to the present embodiment, as described above, when a predetermined amount of the crushed pieces P is put into the processing tank 1, the rotating disk 4 is driven, and the crushed pieces P are stirred. It will flow while being played. Along with the stirring, the crushed pieces P are gathered at the outer peripheral portion in the processing tank 1 by the centrifugal force and flow so as to rise upward from below, but as shown in FIG. The flow direction of the piece P is changed.

Then, the crushed pieces P are heated to a temperature just before the crushed pieces P are melted due to mutual frictional collision between the crushed pieces P, or between the crushed pieces P and the inner wall surface of the tank or the rotating disk 4 due to the flow accompanying the stirring. Then, the coating film having a reduced adhesive force on the surface of the crushed piece P is peeled off from the resin layer itself while being finely crushed, and a part of the surface of the resin layer itself is also crushed into a powder form to become a powder component. The powder component is stirred together with the crushed pieces P.

At the same time, since the exhaust blower 10 is operated in parallel with the coating film peeling treatment in the processing tank 1, the suction exhaust force of the exhaust blower 10 is applied to the powder exhaust port of the baffle duct 6 through the exhaust duct 3. Up to eight. As a result, when the powder components such as the coating powder and the resin powder generated by the coating peeling process hit the mesh structure 7 which is the powder exhaust port 8 of the baffle duct 6 together with the crushed pieces P in the process of repeating the stirring and flowing, Only the powder component is immediately sucked into the exhaust duct 3 while leaving the crushed pieces P that cannot pass through the mesh, and finally collected by the dust collecting device 9.

When the coating film peeling treatment in the processing tank 1 is completed in this way, the crushed pieces P are taken out of the processing tank 1, and powders such as coating film powder and resin powder still adhered to the surface in a later step. After being separated from the components, they are collected and reused as they are or as pellets after being pelletized.

As described above, according to the present embodiment, the powder components such as the coating film powder peeled off from the crushed pieces P in the processing tank 1 can be quickly discharged out of the processing tank 1. The peeled coating film powder and the like do not adhere to the crushed pieces P, and the coating film peeling efficiency is dramatically improved.

FIGS. 3 and 4 are views showing a second preferred embodiment of the processing apparatus according to the present invention, in which parts common to those of the first embodiment shown in FIG. I have.

In the second embodiment, a discharge port 12 is formed in the upper part of the processing tank 1, and the discharge port 1 in the upper part is formed.
2, a pair of air injection nozzles 14 connected to an air pressure source 13 is provided at the center in the height direction of a portion of the processing tank 1 that is to become the body 1a. I have. These air injection nozzles 14 are arranged in a positional relationship such that they face each other in opposite directions in the tank,
In the plan view of FIG. 4, the axis is set to point substantially obliquely to the tangential direction of the internal stirring and flowing direction R, but in the cross-sectional view of FIG. 3, the axis is set to point diagonally downward.

That is, when the air is blown obliquely from above toward the protruding portion of the crushed pieces P during the stirring and flowing, the air flow from the two air injection nozzles 14 By the synergistic action, it is set so as to generate a spiral swirling airflow F that goes upward from below and circulates in the tank.

Therefore, according to the second embodiment, the exhaust blower 10 of the exhaust device 2 is operated in parallel with the stirring operation of the crushed pieces P by the rotating disk 4 while the two air injection nozzles 14 Air is jetted toward the stirring and flowing pulverized pieces P to generate a spiral swirling airflow F that flows upward from below in the tank as shown by arrows in FIG.

In this state, based on the flow accompanying the stirring, the coating powder or the resin powder, etc., which have been separated due to mutual frictional collision between the crushed pieces P, or between the crushed pieces P or between the crushed pieces P and the inner wall surface of the tank or the rotating disk 4 or the like. Is stirred together with the crushed pieces P, and when it comes to appear on the surface of the above-mentioned raised portion, the powder component having a small specific gravity is blown off by air jetting and rides on the swirling air flow F from below in the tank. It rises while floating upward. Then, the powder component floating in the upper space in the tank is quickly discharged from the discharge port 12 by the forced suction force of the exhaust device 2. In the second embodiment, basically, the same effects as those of the first embodiment can be obtained.

Here, when dry air from which humidity has been removed in advance is used as the air injected from the air injection nozzle 14, the drying of the crushed pieces P itself and the separation of the powder component from the crushed pieces P are further promoted. In addition, the air injection nozzle 1
In the fourth embodiment, the same function is exhibited even when the nozzle for directly blowing air toward the crushed pieces P and the nozzle for generating the swirling airflow F are made independent of each other.

FIG. 5 is a view showing a third preferred embodiment of the processing apparatus according to the present invention, and portions common to those of the second embodiment shown in FIG. 3 are denoted by the same reference numerals. .

That is, in the third embodiment, the upper end portion of the processing tank 1 is partially enlarged, and the large diameter portion 15 is formed.
A shelf 16 corresponding to the difference in diameter between the two is formed at the boundary between the main body 1a and the lower part of the body 1a, and a part of the shelf 16 can be opened and closed by a shutter or the like (not shown). A powder outlet 17 is formed.

According to the third embodiment, the swirling air flow F generated in the tank has a relatively gentle flow in a portion corresponding to the large diameter portion 15.
A part of the powder component floating in the upper part of the tank on the swirling air flow F falls on the shelf 16 by its own weight and is collected. Therefore, the combined use with the forced suction from the exhaust port 12 further improves the collection efficiency of the powder component. The powder component collected by the shelf 16 can be easily removed by opening the powder outlet 17 as appropriate.

Here, without forming the large diameter portion 15,
Although it is possible to provide the large-diameter portion 15, it is advantageous to form the large-diameter portion 15 in order to reduce the flow of the swirling air flow F and increase the efficiency of collecting the powder component as described above.

FIGS. 6 and 7 are views showing a fourth preferred embodiment of the processing apparatus according to the present invention, in which parts common to those of the second embodiment shown in FIG. I have.

In the fourth embodiment, the air pressure source 1 is located above the rotary disk 4 at the lower end of the processing tank 1.
3 is pierced so as to penetrate in the diametrical direction of the tank itself, while the air is directly supplied to the crushed pieces P during the stirring flow. A pair of air jet nozzles 19 for jetting are connected in opposite directions. As the installation position of the air injection pipe 18, a position that is always in contact with the crushed pieces P during the stirring flow and has the highest contact efficiency is selected. Further, the stirring direction R of the crushed pieces P is located above the air injection pipe 18.
The pair of swirling air flow generating air jet nozzles 20 are arranged in opposite directions so as to be directed in the tangential direction of the swirling air flow.

That is, in the fourth embodiment, the air injection nozzle 19 for directly injecting air toward the crushed pieces P during the stirring and flowing, and the spiral spiraling from the lower part to the upper part while circulating in the tank. It is characterized in that the air injection nozzle 20 for generating the swirling air flow F is made independent of each other, and the air injection pipe 18 is positively collided with the crushed pieces P.

Therefore, according to the fourth embodiment, the air injection nozzle 19 is directed
Air is directly injected from the crushed piece P, and the powder component being stirred together with the crushed piece P is blown off by the direct air injection so as to be separated from the crushed piece P itself. The component floats upward on the swirling airflow F. These behaviors are basically the same as in the second and third embodiments.

On the other hand, in the present embodiment, since the crushed pieces P which are being stirred and flowed repeatedly collide with the air injection pipe 18, the impact force applied to the crushed pieces P increases by that much, and the crushed pieces P The peeling efficiency of the coating film from the piece P itself,
The efficiency of separating the powder component from the crushed pieces P is further enhanced.

In this case, by cooling the air flowing through the air injection pipe 18 in advance, the temperature rise of the pipe wall that directly collides with the crushed pieces P is suppressed, and the temperature is increased to near the melting temperature. It is possible to prevent the rising of the crushed pieces P from adhering to the pipe.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view showing a first preferred embodiment of a processing apparatus according to the present invention.

FIG. 2 is an enlarged perspective view of a rotating disk arranged in the processing tank of FIG. 1;

FIG. 3 is a configuration explanatory view showing a second preferred embodiment of the processing apparatus according to the present invention.

FIG. 4 is an explanatory plan view of FIG. 3;

FIG. 5 is a configuration explanatory view showing a third preferred embodiment of the processing apparatus according to the present invention.

FIG. 6 is a configuration explanatory view showing a preferred fourth embodiment of a processing apparatus according to the present invention.

FIG. 7 is an explanatory plan view of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Processing tank 2 ... Exhaust device 4 ... Rotating disk (rotating member) 6 ... Baffle duct (return member) 7 ... Net structure 8 ... Powder discharge port 12 ... Discharge port 14 ... Air injection nozzle 15 ... Large diameter part Reference Signs List 16: shelf portion 18: air injection pipe 19: air injection nozzle 20: air injection nozzle for generating swirling air flow F: swirling air flow P: crushed piece

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomomi Takase Hirose Prefecture Kamo-gun Kawachi-machi Ogata Kawato 743 Takasego Seikagaku Co., Ltd. (72) Inventor Taiichi Hijikata 3-1-1 Honohara, Toyokawa City, Aichi Prefecture Shinto Industrial Co., Ltd. (72) Inventor Toshihisa Komori 3-1-1 Honohara, Toyokawa City, Aichi Prefecture Shinto Kogyo Co., Ltd. Inventor Atsushi Mizutani 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Tsutomu Nishida 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (72) Hiroo Onodera Yokohama-shi, Kanagawa 2F, Takaracho, Kanagawa-ku Nissan Motor Co., Ltd. F-term (reference) 4D004 AA07 AA26 CA15 CA50 CB09 CB50 4D075 BB20 Z DC13 EA02 4F201 AA50 AC04 AD11 AH24 BA04 BC02 BC12 BC25 BC37 BN29 BP05 BP12 BP31 BQ18 BQ21 BQ40 BQ44 4F301 AA14 BC38 BC58 BF05

Claims (6)

[Claims] A crushed piece of a thermoplastic resin part with a coating film, which has been crushed to a predetermined size in advance, is accommodated in a processing tank, and the crushed piece is stirred by a rotating member disposed at the bottom of the processing tank. An apparatus for regenerating a resin part with a coating film in which a coating film is peeled off by mutual frictional collision between each other, wherein the resin part is gathered on the inner periphery of the body of the treatment tank by a centrifugal force caused by stirring. While providing a return member that positively changes the flow direction of the crushed pieces from the upward direction to the downward direction, the portion of the return member that is directly in contact with the flow crushed pieces is prevented while the crushed pieces themselves pass through. A powder outlet is formed to allow the passage of the powder component peeled from the crushed pieces, and the powder outlet is exposed to the outside of the treatment tank, and the powder from the crushed pieces flows by the flow of the crushed pieces themselves due to the centrifugal force. Aggressive body components A recycling apparatus for a resin part with a coating film, wherein the resin part is separated and discharged outside the processing tank. 2. The method according to claim 1, wherein the powder outlet is connected to suction means outside the processing tank, and the powder component separated from the crushed pieces is sucked and discharged from the powder outlet. The apparatus for reprocessing a resin part with a coating film according to claim 1. 3. A crushed piece of a thermoplastic resin part with a coating film, which has been crushed in advance to a predetermined size, is accommodated in a processing tank, and the crushed piece is stirred by a rotating member arranged at the bottom of the processing tank. This is a reprocessing device for resin parts with a coating film, in which the coating film is peeled off by mutual frictional collision between the two. By injecting air and generating a swirling airflow that flows upward from below in the processing tank while circulating in the processing tank, the powder component separated from the crushed pieces is positively in the processing tank. An apparatus for regenerating a resin part with a coating film, wherein the resin component is floated in an upper space, and the suspended powder component is sucked and discharged to the outside from a discharge port formed in an upper portion of a processing tank. 4. A shelf-shaped part is formed in an upper part in the processing tank,
4. The resin part with a coating according to claim 3, wherein a part of the powder component floating in the upper space in the processing tank is collected by natural fall on the shelf. apparatus. 5. The process tank according to claim 4, wherein the inner diameter of the upper end portion of the processing tank is increased, and a shelf portion is formed in the large diameter portion.
A reprocessing apparatus for a resin part with a coating film according to item 1. 6. A pulverized piece of a thermoplastic resin part with a coating film, which has been pulverized to a predetermined size in advance, is accommodated in a processing tank, and the pulverized piece is stirred by a rotating member disposed at the bottom of the processing tank. A reprocessing apparatus for a resin part with a coating film, wherein the coating film is peeled off by mutual frictional collision between each other. Arrange the air injection pipe at the position in contact with the crushed pieces gathered at the inner and outer circumferences,
In addition to injecting air toward the crushed pieces from the injection nozzle connected to this air injection pipe, air is injected from the injection nozzle for swirling air flow generation, and the inside of the processing tank is circulated from below while rotating around the processing tank. By generating a swirling airflow that flows upward, the powder components separated from the crushed pieces are positively floated in the upper space in the processing tank, and the floating powder components are removed from the upper part of the processing tank. An apparatus for regenerating a resin part with a coating film, wherein the resin part is sucked and discharged to the outside from a discharge port formed in the opening.