JPH07276364A - Separation device of surface coating of resin waste matter - Google Patents

Abstract

PURPOSE:To contrive easy separation and removal of a coating, by a method wherein a peeling roll is arranged between a peeling cylinder and its inner wall surface, a coarse pulverized body is passed through between both of them and the coating of the coarse pulverized body is peeled and removed from the surface by a shock and agitating actions. CONSTITUTION:A coarse pulverized body enters a gap between a peeling cylinder 30 and peeling roll 40 through a receiving side 33 of a polygonal peeling cylinder 30, the gap between both of them is narrowed greatly by a rotation of a projected line 42 of the peeling roll 40 and since compression and scattering of the coarse pulverized body are repeated and shock and agitation actions are generated. Then frictional heat is generated by a method wherein the coarse pulverized bodies are either adjoin to each other or rub against the projected line and a coating is peeled off. Then a direction of the coarse pulverized body is changed by the scattering by the projected line 42, chances colliding with a front wall 43 of the projected line 42 become equal and the coating is peeled off. Then a temperature of an article is adjusted by preparation of a press plate 52 and the pulverized body whose coating is peeled off is discharged through a discharge side. Therefore, the higher the temperature of the article becomes, the better peeling efficiency becomes, separation efficiency of the coating is improved and separation and removal of the coating can be performed easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a crushed polypropylene waste material to form a granular coarsely pulverized body, rubbing the surface of the coarsely pulverized body, and peeling a resin coating film on the surface of the coarsely pulverized body. However, the present invention relates to a surface coating film separation device for a resin waste that is made to regenerate a resin material, and the waste includes, for example, a waste bumper, and the resin coating includes, for example, an acrylic resin, or , There is a coating film made of polyurethane resin.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of effective use of resources, for example, a waste bumper made of polypropylene resin is collected,
Recycled into resin parts other than bumpers such as spare tire buckets and water screens. Generally, bumpers are required to have high mechanical properties such as impact characteristics and high quality appearance, and in order to reuse them in the bumper, it is necessary to completely remove the coating film applied to the waste bumper.

As an apparatus for separating a surface coating film of a resin waste, for example, a waste bumper is crushed into a granular coarsely pulverized body, the coarsely pulverized body is chemically treated, and the surface coating film is peeled off, followed by washing. And it is considered that it is dried.

[0004]

However, in such a prior art, many steps are required until a coarsely crushed body is made into a recycled material, which causes an increase in the cost of the recycled material. However, the recycling of resin waste is economical because it requires a lot of man-hours from the collection of waste bumpers to the separation of waste bumpers, and in the case of chemical treatment, there is a new issue of disposal of treatment agents. There was a problem that it did not fit the purpose.

The present invention has been made by paying attention to the problems of the above prior arts, and the surface coating film of the resin waste can be removed without requiring a lot of man-hours, and the cost can be reduced. It is an object of the present invention to provide a surface coating film separation device for resin waste that can be reduced and does not require a large installation space.

[0006]

Means for Solving the Problems The gist of the present invention for attaining the above-mentioned object is to: 1 waste material made of polypropylene resin is crushed into granular coarsely pulverized bodies, and the surface of the coarsely pulverized bodies is An apparatus for separating a surface coating film of a resin waste, in which a resin coating film applied on the surface of the coarsely pulverized body is peeled off to regenerate a resin material, one end of which is a coarse pulverized body. Coarse crushing is performed between the peeling cylinder (30) having the receiving side and the other end being the discharging side, and a plurality of gently inclined projections on the outer circumference, and the inner wall surface (32) of the peeling cylinder (30). Peeling device (10) for a coating film of a coarsely pulverized body by a peeling roll (40) arranged so as to form a gap for body treatment
And a discharge port (3) on the discharge side of the peeling cylinder (30).
6) has a holding plate (52) provided so as to face the discharge port (36) and adjusts the pressing force of the holding plate (52) to give a coarse powder. And the pressure in the peeling cylinder (30) to adjust the pressure in the peeling cylinder (30), the number of revolutions of the peeling roll (40), and the amount of the coarsely pulverized body charged. An apparatus for separating a surface coating film of a resin waste, comprising a pressure adjusting section (50) capable of adjusting the temperature of the coarsely pulverized body in the peeling cylinder (30) to 80 ° C to 115 ° C.

2 A waste bumper made of polypropylene resin is crushed into a granular coarse pulverized body, the surface of the coarse pulverized body is rubbed, and the resin coating film applied to the surface of the coarse pulverized body is peeled off. A surface coating film separation device for resin waste, which is designed to recycle the material of a bumper, and has a non-circular cross section, with one end being the receiving side of the coarsely crushed body and the other end being the discharge side. (30) and a plurality of gently sloping ridges on the outer circumference, and are arranged so as to form a gap for coarsely crushed body treatment between the inner wall surface (32) of the peeling cylinder (30). The peeling roll (40) constitutes a peeling device (10) for the coating film of the coarsely pulverized body, and the discharge port (36) is provided on the discharge side of the peeling cylinder (30).
And a pressing plate (52) arranged so as to block the discharge port (36) and adjust the pressing force of the pressing plate (52) to flow out the coarse powder. The amount in the peeling cylinder (30) is adjusted, and the peeling is caused by the pressure in the peeling cylinder (30), the number of revolutions of the peeling roll (40), and the amount of the coarsely pulverized material charged. Tube (3
A surface coating film separating apparatus for resin waste, characterized in that a pressure adjusting section (50) capable of adjusting the temperature of the coarsely pulverized product in 0) to 80 ° C to 115 ° C is provided.

3. The peeling device (10) is combined into a plurality of processing stages, and various stages from initial peeling to final peeling are set and assigned to each processing stage.
Alternatively, the apparatus for separating surface coating film of resin waste according to the item 2.

4 A series of peeling devices (30) are arranged side by side so that the peeling cylinders (30) in each processing stage are arranged so that their cylinder axes are oriented in the horizontal direction and the cylinder axes are aligned in the vertical direction. 1
0) is constituted, The surface coating film separation device of the resin waste as described in 3 above.

5. In each treatment stage, the discharge side of the former stage is connected to the receiving side of the latter stage via a screw conveyor (65), and the apparatus for separating surface coating film of resin waste according to the item 3 or 4 is characterized. .

6 The peeling cylinder (3) of the peeling device (10)
No. 0) is provided with a large number of discharge holes (32c) through which only the peeling component can pass, and the blowing flow path (45a) is provided in the peeling roll (40).
And a blowout port (46) communicating from the blowout flow path (45a) to the outer periphery of the peeling roll (40). The resin waste according to any one of claims 1, 2, 3, 4 or 5. Surface coating film separation device.

7. The apparatus for separating a surface coating film of resin waste according to item 3, 4, 5 or 6, wherein each processing stage shares the same drive source.

8 An inner wall surface (3
A discharge hole (32) communicating with the outside from 2) and elongated in the circumferential direction of the cylinder and having a width through which only the separated coating film can pass.
c) are arranged in a large number in the circumferential direction and are also arranged in a direction parallel to the cylinder axis direction.
The present invention resides in the apparatus for separating a surface coating film of resin waste as described in 5, 6, or 7.

[0014]

First, the general operation of the peeling device (10) will be described. As the coarsely crushed body, a waste product made of polypropylene resin is crushed into particles. The coarsely crushed body is
0) from the receiving side of the peeling cylinder (30) and peeling roll (40)
The space between the ridge (42) and the inner peripheral surface of the peeling cylinder (30) becomes wider or narrower as the ridge (42) of the peeling roll (40) rotates continuously. The coarsely pulverized body is repeatedly compressed and diffused and is subjected to an impact action and a stirring action. The coarse crushed body that collides with the ridges in a compressed state is subjected to a pressure that is a combination of the impact pressure due to the collision and the pressure between the coarse crushed bodies, and the coarse crushed body tries to be transferred in the rotation direction of the ridges. At this time, the coarsely pulverized bodies rub against each other or rub against the ridges to generate frictional heat, and the coating film of the coarsely pulverized body is mainly peeled off by the frictional heat.

Further, when the compressed coarse crushed body group diffuses again, the rough crushed bodies on the front, rear, right and left are violently exchanged by the diffusion action of the projections, the direction of the coarse crushed body changes, and any coarse crushed body is changed. Opportunity to collide with the front wall of the ridge is even,
The coating film of the coarsely pulverized body is peeled off. The product temperature of the coarsely pulverized body in the peeling cylinder (30) depends on the amount of the coarsely pulverized body charged, the peeling roll (4
0) and the pressing force of the pressing plate (52) that presses the discharge port (36), etc., but mainly by adjusting the pressing force of the pressing plate (52), the product temperature of the coarsely pulverized body is 80%.
It is adjusted in the range of ℃ to 115 ℃. The coarsely pulverized body with the coating film peeled off is discharged from the discharge side of the peeling cylinder (30). In the surface coating film separating apparatus for resin waste, the peeling may be carried out by the complete peeling work in the same stage, or in a plurality of stages.

In the case where the peeling device (10) is combined into a plurality of processing stages and various stages from the initial peeling to the final peeling are set and assigned to each processing stage, the first peeling device (10) is assigned. The coarsely pulverized material is put in to proceed with the treatment. First
Make sure that the step has a stripping cylinder (3
0), the form and gap of the peeling roll (40) are set, and the rotation speed of the peeling roll (40) is also set appropriately. The peeling roll (40) hits the coarsely pulverized body to remove the coating film. Get burned. Several peeling cylinders (30) in each of the processing stages are
In the one in which the cylinder shafts are oriented in the horizontal direction and the cylinder shafts are arranged side by side in the vertical direction to form a series of separation devices (10), the coarsely pulverized body has the upstream separation pipe (30). ) To the peeling cylinder (30) on the downstream side, the peeling process is easy, and the present apparatus can be installed even in a narrow space. In each processing stage, the discharge side of the former stage is connected to the receiving side of the latter stage via the screw conveyor (65), and the coarse crushed body is not stored in the tank or the like after passing through a certain treatment stage, Accepted and can be processed quickly.

The stripping cylinder (30) of the stripping device (10) is provided with a large number of discharge holes (32c) through which only stripping components can pass, and a jet flow path (45a) is provided in the stripping roll (40). , The peeling roll (4
In the one in which the blowout port (46) communicating with the outer periphery of (0) is provided, the release component whose coating film becomes powdery passes through the blowout flow channel (45a) in the release roll (40) in each stage. It is also possible that the air is blown off by the air blown from the air blow port (46) and is discharged to the outside from the discharge hole (32c) of the peeling cylinder (30). In addition, the product temperature of the coarsely pulverized body in the peeling cylinder (30) can be adjusted by adjusting the amount of jet air. In the case where each processing stage shares the same driving source, since each processing stage is driven by the same driving source, the structure is simplified and the entire driving can be performed in harmony.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention.
As shown in FIG. 3, the coarsely pulverized body supply unit A, the coating film peeling device D, and the crushed particle removing machine C constitute a peeling line. In the pretreatment, the waste bumper made of polypropylene resin is crushed into particles with a hammer mill or the like to form a coarse crushed body having a particle size of 1 to 6 mm. A coating film of acrylic resin or polyurethane resin, which is the surface coating film of the waste bumper, is attached to the surface of the coarsely pulverized body. In the coarse pulverized body supply unit A, the coarse pulverized body supplied to the load receiving hopper A1 is passed through the coarse sorter A2 and the weighing machine A3, and the coarse pulverized body tank A is supplied.
4 and is sent to the coating film peeling device D. Elevators a1 and a for transferring coarsely crushed bodies
2, a3 ... Are arranged at various places. The processing device for the coarsely crushed body is installed in the coating film peeling device D, and as shown in FIG.
10b and 10c are combined into a plurality of processing stages, and various stages from initial peeling to final peeling are set and assigned to each processing stage. The coarsely pulverized body treated by the coating film peeling device D has the coating film completely peeled off, and finely crushed crushed particles are removed by the crushed particle removing machine C and sent to the peeled tank. The apparatus for treating coarsely pulverized bodies is composed of a series of three-stage stripping devices 10a, 10b, 10c, but these may be two or more in series,
The peeling devices 10a, 10b, 10c may be configured in four or more stages. Further, the coarsely crushed body is directly removed from the peeling device 10a
b, 10c may be supplied, in which case
The series of system devices described above need not be used. The peeling devices 10a, 10b, and 10c have specifications according to the processing stages, but all have the same configuration, and common portions are denoted by the same reference numerals and duplicate description will be omitted.

As shown in FIGS. 1 and 2, the apparatus 10a, 10b, 10c for removing the coating film of the coarsely pulverized body comprises a coarsely pulverized body supply section 20, a stripping cylinder 30, and a horizontal axis inside the stripping cylinder 30. The peeling roll 40 is driven to rotate around 41, and the pressure adjusting unit 50 is provided. The peeling cylinder 30 is formed integrally with the housing 11 of the peeling device 10.

The coarsely pulverized body supply unit 20 receives the coarsely pulverized body and a gap 1 between the inner wall of the peeling cylinder 30 and the outer periphery of the peeling cylinder 30.
5, the feed roll 25 is disposed in correspondence with the receiving port 22, and the feed roll 25 is surrounded so that the feed chamber 1
2 is formed in the housing 11. The feed roll 25 is integrally mounted concentrically with the peeling roll 40 so as to be upstream of the flow of the coarsely pulverized body, and a feed spiral 26 is provided on the outer circumference. A pulley 27 is fixedly mounted on a pivot shaft 41 of the feed roll 25, and a driving force is input from a belt 28 wound around the pulley 27. As can be seen in FIG. 2, the peeling cylinder 30 has an octagonal cross section that is a non-circular polygon whose cross section is not constant in radius, and the inner wall surface 32 has surface portions 32a, 32a ...
And the corner portions 32b, 32b ... Alternately and continuously on the outer circumference. One end of the peeling cylinder 30 is connected to the coarse pulverized body supply section 20 at the receiving side 33 of the coarse pulverized body, and the other end is connected to the pressure adjusting section 50 at the discharge side 34.

A large number of discharge holes 32c, 32c, ... Which communicate with the outside from the inner wall surface 32 of the peeling cylinder 30 and through which only peeling components can pass are provided. The peeling roll 40 has an outer diameter of 5
A 7.5 mm-thick resistance member 41 having a frustoconical shape with a bottom surface having an outer diameter of 62 mm is attached to the tip of the resistance member 41. The peeling roll 40 has a saw-tooth-shaped cross section having a plurality of saw-tooth-shaped protrusions 42, 42 ...
It is pivotally supported by a pivot 41a that is installed between and, and is disposed so as to form a gap 15 for treating the coarsely pulverized body with the inner wall surface 32 of the peeling cylinder 30. The gap between the outer diameter of the bottom surface of the resistance member and the inner wall surface 32 of the peeling cylinder 30 is set to about 9 mm. The height of the ridge 42 is about 4 to 10 mm, the front wall 43
Angle β is about 30 to 85 degrees. The larger the number of the ridges 42, 42 ... Of the peeling roll 40, the greater the chance of collision with the coarsely pulverized body, but on the other hand, the pressure difference between the time of compression and the time of diffusion decreases and the stirring force decreases. Approximately 6 pieces are desirable, and when the number is 4, for example, there were 100 to 200 opportunities to collide with the ridges 42 from the time when the coarsely pulverized body was introduced to the time when it was discharged.

This is because the impact pressure is utilized, and therefore the peeling is possible even if the pressure between the coarsely pulverized bodies is low.

The peeling roll 40 is externally fitted to the core cylinder 45, and the central hole of the core cylinder 45 forms a blast flow passage 45a. The blast flow passage 45a and the sawtooth which is steeply inclined behind the front wall 43 in the moving direction. A jet port 46 for discharging the peeling component is formed between the rear surface 44 and the rear wall 44 of the shaped ridge 42. The pressure adjusting unit 50
The pressing plate 52 is provided so as to face the discharge port 36 at the end of the discharge path 35 provided on the discharge side 34 of the peeling cylinder 30, and is supported by the pressing arm 51 and arranged so as to close the discharge port 36. The pressing arm 51 is urged by the urging spring 53 in the direction of coming into contact with the discharge port 36.

The pressing arm 51 can change the pressing force of the pressing plate 52 or the distance between the discharge port 36 and the pressing plate 52 by an adjusting mechanism using a screw 54 that presses the rear end of the biasing spring 53. The product temperature of the coarsely pulverized body in the peeling cylinder 30 increases as the pressing force of the pressing plate 52 is increased, and if the amount of the coarsely pulverized body added is large, the product temperature of the coarsely pulverized body rises, and the rotation speed of the peeling roll 40 is increased. When the pressure is raised, the product temperature of the coarsely pulverized body is lowered and the product temperature of the coarsely pulverized body is lowered as the amount of the air blown through the air blow port 46 is increased. It is performed by adjusting the pressing force of the holding plate 52.
It is set to ℃ -115 ℃. As you can see in Figure 1,
The peeling devices 10a, 10b, and 10c are vertically stacked and supported by the device body 60 so as to form a stepwise processing stage. Duct boxes 61a, 61b, 61c are formed in the device body 60 so as to surround the peeling cylinders 30 of the peeling devices 10a, 10b, 10c.
A dust collecting port 62 is provided on each of b and 61c. The receiving port 22 of the first-stage peeling apparatus 10a is connected to the hopper 21, and a flow path of the hopper 21 is provided with a feeding device 23 for adjusting the flow rate to flow down the coarsely pulverized body.

An input pulley 27a is arranged in parallel with the pulley 27 on the pivot 41 of the third-stage peeling device 10c, and a drive belt 29b is wound around the drive pulley 29a of the drive shaft 29 which is rotationally driven by a drive source. Has been. Peeling device 10
Between the a and 10b and between the stripping devices 10b and 10c, screw conveyors 65 and 65 that convey the processing target from the discharge port 36 in the front stage to the inlet 22 in the rear stage are arranged.

A pivot shaft 41 of the peeling roll 40 and a rotary shaft 65a of the screw conveyor 65 are pivotally supported by a support block 66 of the apparatus body 60, and a pulley 65b fixed to the rotary shaft 65a and a pulley fixed to the pivot shaft 41 are provided. The transmission belt 67 is wound around 41a. Also, the pulley 23b fixed to the drive shaft 23a of the feeding device 23 and the first
A pulley 41 fixedly mounted on a pivot 41 of the step peeling device 10a
A transmission belt 67a is wound around b.
The blast flow passage 45a passing through the inside of the pivot 41 of each peeling roll 40 of the peeling devices 10a, 10b, 10c is the pivot 41.
Is provided with a blast supply pipe 68 that is connected to the end of the pivot 41 and sends compressed air. The branch pipes 68a, 68b, 68c of the blast supply pipe 68 are separated via the rotary coupler 69. Each of the peeling rolls 40 of the devices 10a, 10b, and 10c is connected to the blast flow passage 45a from the end of the pivot 41.

Next, the operation will be described. The coarsely pulverized body fried by the elevator a4 from the coarsely pulverized body tank A4 of the coarsely pulverized body supply section A is put into the hopper 21, and continuously fed by the feeder 23 to the inlet 22 of the first stage peeling apparatus 10a. Be entered. The driving force is transmitted from the driving pulley 29a fixed to the driving shaft 29 to the input pulley 27a of the third-stage peeling device 10c by the driving belt 29b. Input pulley 27a
As a result, when the pivot shaft 41 rotates, the pulley 27 rotates, and this rotation is transmitted to the pulleys 27 at each stage via the belt 28, and the peeling devices 10a, 10b, 10c are all driven to rotate. First-stage and second-stage peeling devices 10a, 10
The peeling roll 40 of FIG.
Is fixed, the transmission belt 6 is pulled from the pulley 41a.
Rotating force is transmitted to the pulley 65b by 7 and each screw conveyor 65 is rotationally driven. First stage peeling device 1
The rotational driving force is transmitted from the pulley 41b fixed to the shaft 41 of 0a to the pulley 23b through the transmission belt 67a, the driving shaft 23a rotates, and the feeding device 23 operates.
The coarsely pulverized body received in the coarsely pulverized body supply unit 20 of the first-stage peeling apparatus 10a is extruded in the delivery chamber 12 by the feed roll 25 toward the peeling cylinder 30 and the peeling roll 40, and the receiving side of the peeling cylinder 30. It is continuously fed from 33 to the gap 15 between the peeling cylinder 30 and the peeling roll 40.

The flow rate of the coarsely pulverized body balances the supply amount in the coarsely pulverized body supply section 20 and the pressure adjusting section 50 connected to the discharge side 34 of the peeling cylinder 30, or the rotation of the peeling roll 40. It is set to be suitable for the peeling process by changing the setting of the number. In the peeling process, the product temperature of the coarsely pulverized body in the peeling cylinder 30 is adjusted to 80 ° C to 115 ° C. As the temperature of the coarsely pulverized body in the peeling cylinder 30 increases, the peeling efficiency tends to increase, but the temperature is 120 ° C.
When the above is reached, the coarsely crushed comrades start to weld. Also, 8
Below 0 ° C, the peeling efficiency is not very good. Delivery room 12
The coarsely crushed body extruded from the peeling cylinder 30 and peeling roll 4
It enters into the gap 15 between 0 and 0, and passes through it while being subjected to an impact action and a stirring action.

The peeling roll 4 is used for the non-circular peeling cylinder 30.
0 rotates first with respect to the front wall 43, which is the gently sloping side of the serrated protrusion 42, and the space between the front wall 43 and the inner peripheral surface of the peeling roll 40 becomes wider as the peeling roll 40 rotates. The coarsely pulverized body is subjected to an impact action and a stirring action as if it is repeatedly compressed and diffused.

The impact action and the stirring action will be described below. As the gap 15 moves to the narrowest state, the density of the coarsely pulverized bodies increases and the pressure between them increases. The coarse crushed body that has collided with the front wall 43 of the ridge 42 in a compressed state is subjected to an impact pressure and the pressure between the coarse crushed bodies, and the coarse crushed body is impacted. At this time, the coarsely pulverized bodies rub against each other or rub against the ridges to generate frictional heat, and the coating film of the coarsely pulverized body is mainly peeled off by the frictional heat. The gap 15 between the front wall 43 of the ridge 42 of the peeling roll 40 and the inner wall surface 32 of the peeling cylinder 30
In the most spread state, the pressure between the coarse crushed bodies, which are coarse crushed bodies, is low, and the coarse crushed bodies that collide with the ridges 42 can freely bounce off, so that the front and rear, right and left coarse crushed bodies are stirred by the stirring action. The coarse crushing bodies are changed abruptly, the orientations of the coarse crushing bodies are changed, and the chances of any of the coarse crushing bodies colliding with the front wall 43 of the serrated ridges 42 are equalized, and the coating film of the coarse crushing bodies is also peeled off. Since it receives an impact pressure, the pressure between the coarsely crushed bodies may be lower than that of the general grain-friction system,
Generation of crushed particles can be suppressed.

The coarsely crushed body from which the coating film has been peeled off is discharged from the discharge side 34 of the peeling cylinder 30 through the discharge passage 35, and is discharged and collected at the discharge port 36 while being subjected to the pressure adjusting action by the holding plate 52 of the pressure adjusting section 50. To be done. The coarsely pulverized body from which the coating film has been peeled off in the first stage is discharged from the discharge port 36 to the starting end of the screw conveyor 65 and sent to the receiving port 22 of the peeling device 10b in the second stage.

Even in the second-stage peeling device 10b, the coating film of the coarsely pulverized body is ground as in the first-stage peeling device 10a.
Although the processing contents of each stage are set appropriately, for example, when the first stage does not completely remove the coating film, the second stage and the third stage completely remove the coating film.

Compressed air for blast is sent to the blast supply pipe 68 from an air source (not shown), and the blast supply pipes 68a, 68 are provided.
b, 68c to the jet flow passage 45a in the shaft 41 of each processing stage
A blast is sent to. In the case where the blowout port 46 is opened on the back wall 44 of the ridge 42 of the peeling roll 40, this blowout port 46
From the exhaust holes 32c of the separating cylinder 30, the separating components are discharged from the duct boxes 61a, 61a.
b, 61c is discharged. Since the coating film scraped from the coarsely crushed body is only a few, it can be easily blown off,
The coating film is discharged through the dust collecting port 62, collected, and processed. The coating is removed from the coarsely pulverized body discharged from the third-stage peeling device 10c, but since crushed particles are mixed, the crushed particles are removed by the crushed particle removing machine C before being transferred to the peeled tank (not shown). Sent. The bag may be immediately packed after the crushing machine C.

The cross-sectional shape of the peeling cylinder 30 is usually polygonal, but even if the outer circumference is circular, a resistor or the like is attached to the inner wall surface so that the compression roll and the diffusion roll 40 can work together. It may occur. Similarly, the ridge 42 of the peeling roll 40 is generally formed integrally with the main body of the peeling roll 40, but a plate having a predetermined shape may be attached to form the ridge. Further, it is possible to deal with the problem by changing the size of the peeling cylinder 30 or the peeling roll 40, the height and the number of the ridges 42, and the operating speed.

[0035]

According to the apparatus for separating a surface coating film of a resin waste according to the present invention, a coarsely pulverized body is passed between a stripping cylinder and a stripping roll, and the surface coating of the coarsely pulverized body is carried out by an impact action and a stirring action. Since the film is rubbed and peeled off, the separation process of the coating film is simplified, the cost can be reduced, and no space is required.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a surface coating film separation device for resin waste showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a conceptual view of a peeling processing line showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Peeling device 11 ... Housing 20 ... Coarse crushed body supply part 25 ... Feed roll 30 ... Peeling cylinder 32 ... Inner wall surface 32c ... Discharge hole 33 ... Receiving side 34 ... Discharging side 36 ... Discharging port 40 ... Peeling roll 42 ... 43 ... Front wall 45a ... Jet flow channel 46 ... Jet port 50 ... Pressure adjusting part 52 ... Holding plate 60 ... Device body 61a, 61b, 61c ... Duct box 62 ... Dust collection port 65 ... Screw conveyor 68 ... Jet supply pipe

Claims (8)

[Claims] 1. A waste product made of polypropylene resin is crushed into a granular coarsely pulverized body, the surface of the coarsely pulverized body is rubbed, and the resin coating film applied to the surface of the coarsely pulverized body is peeled off. A surface coating film separation device for resin waste, which is adapted to regenerate a resin material, comprising a peeling cylinder having one end on the receiving side of the coarsely crushed body and the other end on the discharging side, and a plurality of gently inclined projections. Having an outer periphery, and a peeling roll arranged so as to form a gap for the coarse pulverized body treatment between the inner wall surface of the peeling cylinder and a peeling device for the coating film of the coarse pulverized body, The peeling cylinder has a discharge port facing the discharge port, and has a holding plate arranged so as to close the discharge port, and the pressing force of the holding plate is adjusted to flow out the coarse powder. Adjusting the amount, adjusting the pressure in the peeling cylinder, the pressure in the peeling cylinder, the rotation speed of the peeling roll and The product temperature of the coarse grinding bodies within the release cylinder due to input of grinding bodies 80 ° C.
An apparatus for separating a surface coating film of a resin waste, which is provided with a pressure adjusting section which can be adjusted to ˜115 ° C. 2. A waste bumper made of polypropylene resin is crushed into a granular coarsely pulverized body, the surface of the coarsely pulverized body is rubbed, and the resin coating film applied to the surface of the coarsely pulverized body is peeled off. , A surface coating film separation device for resin waste that is designed to recycle the material of the bumper, having a non-circular cross section, one end being the receiving side of the coarsely crushed body and the other end being the discharge side Coarse crushed body having a cylinder and a plurality of gently inclined projections on the outer circumference, and a peeling roll arranged so as to form a gap for processing the coarsely crushed body between the inner wall surface of the peeling cylinder. And a pressing plate that is provided so as to face the discharge port on the discharge side of the peeling cylinder and that is arranged so as to close the discharge port, and the pressing force of the pressing plate. To adjust the outflow amount of the coarse powder, adjust the pressure in the peeling cylinder, Pressure, the peeling roll speed and coarse grinding of product temperature to 80 ° C. of the release cylinder due to input of the coarse grinding bodies
An apparatus for separating a surface coating film of a resin waste, which is provided with a pressure adjusting section which can be adjusted to ˜115 ° C. 3. The resin product according to claim 1, wherein the stripping apparatus is combined into a plurality of processing stages, and various stages from initial stripping to final stripping are set and assigned to each processing stage. Waste surface coating film separation device. 4. A series of peeling devices are formed by arranging several peeling cylinders in each processing stage side by side so that each cylinder axis is oriented in the horizontal direction and each cylinder axis is aligned in the vertical direction. The surface coating film separation device for resin waste according to claim 3, wherein 5. The surface coating film separating apparatus for resin waste according to claim 3 or 4, wherein in each processing stage, the discharge side of the former stage is connected to the receiving side of the latter stage via a screw conveyor. 6. A stripping cylinder of the stripping device is provided with a large number of discharge holes through which only stripping components can pass, a jet flow channel is provided in the stripping roll, and the jet flow channel communicates with the outer periphery of the stripping roll. 2. A blast opening is provided,
The surface coating film separation device for resin waste according to 2, 3, 4 or 5. 7. The surface coating film separating apparatus for resin waste according to claim 3, 4, 5 or 6, wherein each processing stage shares the same drive source. 8. A large number of discharge holes, which communicate with the outside from the inner wall surface and are elongated in the circumferential direction of the cylinder and have a width that allows only the separated coating film to pass therethrough, are connected in the circumferential direction to the peeling cylinder. In addition, the apparatus for separating a surface coating film of a resin waste according to claim 1, 2, 3, 4, 5, 6 or 7, wherein a plurality of them are continuously provided in a direction parallel to the cylinder axis direction.