KR20190117872A - Paint peeling off device for the recycling of waste resin - Google Patents

Abstract

The present invention includes: a drum installed in a front and rear length direction and having a rear inlet through which coating resin chips are put in, a plurality of holes on the surface thereof, through which paint generated in a process of treating the surface of the coating resin chips is discharged to the outside, and a front outlet through which resin chips completed with the surface treatment are discharged; a shaft having both sides capable of rotating fast in a state of being penetrated and inserted in the central part of the axial direction of the drum, transferring coating resin chips forwards by having a screw at a rear side in the inner side of the inlet and separating paint of the coating resin chips by having a plurality of blades on the circumferential surface thereof; a driving motor rotating through a power transmission means coupled with a front end part of the shaft; a heater maintaining an internal temperature within a range of 25 to 50°C by supplying heat through a preheating pipe body connected to the inlet of the drum; a housing surrounding the drum to block the outside leakage of the paint and having a paint collecting hole to collect paint at a lower part thereof; and a blower injecting air to an air chamber through an air pipe body coupled with a rear end part of the shaft as the air chamber formed in the shaft is opened to the inside of the drum through a through hole of the surface. A burr (10) is formed around the hole (10) in the direction of facing the shaft (20). The present invention enables clean surface treatment.

Description

PAINT PEELING OFF DEVICE FOR THE RECYCLING OF WASTE RESIN}

The present invention relates to a paint peeling device of a recycled waste coating resin chip, and more particularly, to recycle by completely removing the paint by surface treatment of a predetermined plastic chip finely shredded waste plastic products such as a bumper cover for automobiles. It relates to a paint peeling device of the recycled waste coating resin chip.

In general, various plastic and resin products (hereinafter referred to as 'painting resin products') coated with automobile bumper covers or paints are molded and made of synthetic resin such as polypropylene (PP), and various colors of paint are painted on the surface of the product. Is applied.

After using the coated resin product, the wastes discarded due to damage and damage are collected and recycled as a water support fee through a predetermined treatment process, in order to completely remove the paint on the surface of the product. The paint removal method is a chemical treatment method using chemicals such as hydrochloric acid, sulfuric acid or mechanical treatment method using the friction of the friction member (brush). However, the chemical treatment method of the former has a long treatment time and a low removal efficiency of 80 ~ 85%, and the resin product melts, resulting in loss of water support fees and turbidity. It is inefficient because it requires cleaning and aftertreatment. In particular, it causes serious water pollution (air) pollution, as well as serious environmental pollution problems such as a large amount of waste water and harmful substances are generated. The latter mechanical treatment (device) will be described in detail with reference to the following prior art.

As a conventional prior art (patent document) relating to the paint peeling apparatus of the coating resin product, as shown in Korean Laid-Open Patent Publication No. 1999-0074662 (published on October 05, 1999), water on the surface of the coating resin product (bumper) There is a coating film removal system for a coating resin product in which paint is sprayed at a high pressure to peel paint. Alternatively, the coating film of the coating resin product which separates the coating film by the rolling force of the roll as the resin material rolled between the pair of rolls passes, as in Korean Patent Application Publication No. 1996-0037240 (published November 19, 1996). There is a peeling removal device. However, since the prior art sprays water at a high pressure on the surface of the bumper or passes between the rolls to remove the paint, the device is relatively enlarged according to the volume (size, area) of the bumper and its configuration is complicated. Of course, the production cost and price is expensive, there is an uneconomic problem.

Alternatively, the paint removal apparatus for a vehicle bumper of Korean Patent Publication No. 10-2013-0040786 (published April 24, 2013) includes a pair of rolls for rolling a bumper and a surface of the bumper taken out from the roll. The shot blasting apparatus which removes the said coating material which remain | survives is comprised. However, it is complicated and complicated, and it takes a lot of manufacturing cost, and there is a lot of vibration, noise, dust, etc., which causes a bad working environment, adversely affects the physical health of workers, and excessive operation and maintenance cost of equipment such as shot blast device. Inefficiencies are inherent.

Alternatively, there is a 'Paint Peeling Device of Waste' of Korean Patent Publication No. 1662767 (Registration Date Sept. 28, 2016), which has a conical stator having waste introduced into the main body and a lower inside of the stator. The blade of the installed conical rotor is configured to peel off the paint on the waste surface while rotating at high speed. However, the vertical paint peeling device as described above has a problem in that the paint removal efficiency is poor because waste injected into the upper hopper falls down through the rotor in a state in which the paint is not completely removed.

Korean Unexamined Patent Publication No. 1999-0074662 (1999.10.05., Published) Korean Unexamined Patent Publication No. 1996-0037240 (1996.11.19., Published) Korean Patent Publication No. 10-2013-0040786 (2013.04.24., Published) Domestic Patent Publication No. 1662767 (2016.09.28., Registered)

An object of the present invention is to break up the coating resin product with a crusher and to paint in a short time due to the impact force of the high-speed rotary shaft, in which the blade is preheated to a predetermined temperature in a waste coating resin chip provided in the form of chips. The present invention provides a paint peeling apparatus for recycled waste-coated resin chips that can be peeled off, thereby making it possible to clean the surface with recycled resin products.

In order to achieve the above object, the present invention is installed in the front and rear longitudinal direction, the coating resin chip is introduced into the rear inlet and the outer surface through a plurality of holes formed in the paint generated in the process of surface treatment of the coating resin chip Is discharged to, the resin chip surface treatment is complete drum discharged to the outlet of the front; Both sides are installed to be rotated at a high speed in the state in which the drum is inserted in the axial direction, and a screw formed at the rear side is provided inside the inlet to transfer the coating resin chip to the front and form a plurality of blades on the circumferential surface to form the coating resin. A shaft separating the paint of the chip; A drive motor for rotating through a power transmission means coupled to the front end of the shaft; A heater for supplying heat through a preheating tube connected to the inlet of the drum to maintain an internal temperature within 25 to 50 degrees C; A housing around the drum to block the outflow of the paint and having a paint recovery port at the bottom thereof to recover the paint; And a blower in which an air chamber formed inside the shaft is opened into the drum through a hole in the surface and injects air into the air chamber through an air pipe coupled to the rear end of the shaft. 10, a burr 10a is formed around the shaft 20 in a direction toward the shaft 20.

The shaft may further include: a first peeling part which forms a predetermined number of blades at equal intervals in front of the screw to equally peel off the paint on the surface of the coating resin chip; And a second peeling part formed in front of the first peeling part to have a greater number of blades than the first peeling part at equal intervals so that the paint remaining on the surface of the coating resin chip can be secondary peeled more finely. It is characterized by.

In addition, the shaft is provided with a transfer blade in the middle portion of the circumferential surface is characterized in that configured to prevent the phenomenon of the coating resin chip.

In addition, the outlet of the drum is provided with a chip outlet for guiding the resin chip, the inside of the chip outlet is provided with a guide ring is characterized in that the outlet is configured to narrow toward the outside.

The present invention has the effect of being able to peel off the paint on the surface in a short time through a simple surface treatment process by crushing the coating resin product and put the waste coating resin chip provided in the form of a chip into the hopper. In addition, the device is simple, easy to manufacture, easy to operate, easy to maintain, easy to maintain and operate, and does not require a separate maintenance cost provides a very economic effect.

In the present invention, the coating resin chip in the hopper is introduced by a predetermined amount through a fixed-quantity feeder and is uniformly transferred by a screw on the inlet side, and is smoothly fed into the drum. In addition, there is an effect that the surface of the chip may be evenly peeled off evenly by the shaft and the blade rotating at a high speed inside the drum. In addition, since the chip outlet provided on the outlet side of the drum controls the discharge of the resin chip, the paint remaining on the surface of the resin chip in the drum can be sufficiently peeled, and the surface treatment efficiency is further improved. .

The present invention has the effect of providing the optimum temperature conditions most suitable for peeling the paint on the surface of the coating resin chip by the preheating tube and the preheating means connected to the inlet and maximizes the peeling efficiency.

According to the present invention, the paint of the coating resin chip is completely removed by the first peeling part and the second peeling part provided on the shaft, thereby allowing the surface to be cleaned. In addition, the transfer blade provided in the middle portion of the shaft to facilitate the transfer of the chip to prevent the phenomenon of the inside of the drum. In addition, due to overheating of the drum, the resin chip may be prevented from melting or agglomeration and surface treatment efficiency may be improved.

The present invention has excellent surface treatment efficiency of waste coating resin chips, which are difficult to process, such as automobile bumper covers or various plastic and resin products coated with paint, thereby maximizing recycling efficiency of waste materials, and using high quality recycled resin chips. It is accompanied by economic effects that can create added value.

1 is a view showing an internal cross-section of the paint peeling apparatus of the recycled waste coating resin chip according to a preferred embodiment of the present invention.
FIG. 2 is a side view taken along the line “A”-“A” of FIG. 1. FIG.
FIG. 3 is a side view taken along the line “B”-“B” of FIG. 1. FIG.
FIG. 4 is a side view taken along the line “C”-“C” of FIG. 1. FIG.
5 is an enlarged view of an outlet and a chip outlet of the paint peeling apparatus according to the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The paint peeling apparatus of the recycled waste coating resin chip of the present invention according to the drawings is installed in the front and rear longitudinal direction, and the coating resin chip R is introduced into the rear inlet 14 to surface-treat the coating resin chip R. The paint (P) generated in the process is discharged to the outside through a plurality of holes 12 formed on the surface, the resin chip (R ') surface treatment is discharged to the outlet (15) in front of the drum (10) ); Both sides are installed to be rotated at a high speed in the state in which the drum 10 is axially inserted therethrough, and a screw 22 formed at the rear side is provided inside the inlet 14 to transfer the coating resin chip R to the front. Shaft 20 to form a plurality of blades 30 on the circumferential surface to separate the paint (P) of the coating resin chip (R); A drive motor 36 for rotating through a power transmission means coupled to the front end of the shaft 20; A heater (40) for supplying heat through a preheating tube (42) connected to the inlet (14) of the drum (10) to maintain an internal temperature within a range of 25 to 50 degrees Celsius; A housing 50 having a paint recovery port 54 for collecting paint P to block outside of the paint P by wrapping around the drum 10 to block external leakage of the paint P; And an air chamber 62 having an air chamber 26 formed in the shaft 20 open to the drum 10 through a through hole 28 of the surface and coupled to the rear end of the shaft 20. It includes; a blower 60 for injecting air into the air chamber 26 through.

The above is described in more detail as follows.

First, the paint peeling device of the recycled waste coating resin chip according to the present invention is composed of a drum 10, a shaft 20, a drive motor 36, a heater 40, a housing 50, a blower 60 As a result, the paint is removed by surface treatment of the waste coating resin chip R on which the paint is applied. The waste paint resin chip (R) corresponds to the recycled waste such as the bumper cover, various plastics and resin products of the automobile to which the paint is applied, which is collected and crushed by a crusher and broken into small pieces of about 10 to 100 mm in size. It means having the shape of a chip.

The drum 10 is cylindrical and has a plurality of holes 12 formed in the surface thereof, and is installed long in the front and rear longitudinal direction, and the shaft 20 is inserted therein, and the hopper 18 on the inlet 14 provided at the rear. ) Is installed and the outlet 15 is provided in front of the other side. When the paint resin chip R is introduced into the hopper 18, the surface is treated inside the drum 10 to separate the paint P, and the paint P generated in the process is discharged to the outside through the hole 12. do. The resin chip R 'having the surface treatment completed is discharged to the front outlet 15 and placed in the collection box 58.

On the other hand, when the burr 10a is formed around the hole 10 in the direction toward the shaft 20, the waste coating resin chip R rubs against the burr 10a, and the waste coating resin chip R The applied paint is removed more effectively.

The present invention is characterized in that the inlet 14 is provided with a metering feeder (16). The metering feeder 16 is introduced into the inlet 14 by a predetermined amount of a large amount of coating resin chip (R) contained in the hopper to prevent overload and to prevent the inlet is blocked, the surface treatment process is stabilized.

The shaft 20 is a screw 22 is formed on the inlet side of the rear and a plurality of blades 30 is formed on the surface, axially inserted through the center of the drum 10 and coupled to the front and rear ends It is installed to be capable of high speed rotation by the rotation support means. The shaft 20 has an air chamber 26 formed therein and is opened to the rear side through the air passage 24 of the rear inlet portion 21, which will be described later. The shaft 20 is applied to the paint resin chip (R) with a blade 30 that is smoothly transferred to the inside of the drum and the high speed rotation of the paint resin chip (R) along the screw 22 to the paint (P) of the surface Forced separation The rotation support means is preferably a bearing, retainer, etc. to minimize the rotational friction of the shaft.

According to the present invention, the shaft 20 is formed in a predetermined number of blades 30 in front of the screw 22 at equal intervals to primary paint (P) on the surface of the coating resin chip (R) A first peeling part 20a to be peeled off; And the number of blades 30 formed in front of the first peeling part 20a than the first peeling part 20a at equal intervals so that the paint P remaining on the surface of the coating resin chip R may be formed. It characterized in that consisting of; a second peeling unit 20b for secondary peeling more finely. In other words, the coating resin chip R is first separated from the shaft 20 by the first peeling part 20a provided on the inlet side, and peeled again by the second peeling part 20b in front, thereby removing paint efficiency. This is very excellent.

A plurality of blades 30 are radially attached to the center portion of the shaft to hit the coating resin chip R in the first peeling part 20a and the second peeling part 20b. Preferably, as shown in FIG. 2, four blades 30 are attached to the first peeling part 20a, and at least two to six pieces are provided. In addition, as shown in FIG. 4, the second peeling part 20b is provided with eight blades 30, so that the number of times of contact with the coating resin chip R and the contact area thereof are relatively increased, and the paint is further refined. It can peel easily. At least seven to twelve pieces of the second peeling part 20b are provided, and it is apparent that the second peeling part 20b may be composed of twelve or more depending on the type of chip to be processed or the processing capacity and size of the device.

In the present invention, the shaft 20 is characterized in that the transfer blade 32 is provided in the middle of the circumferential surface is configured to prevent the phenomena of the coating resin chip (R). That is, the transfer blade 32 is provided between the first peeling part 20a and the second peeling part 20b, so that the movement of the coating resin chip R surface-treated inside the drum is smooth and stagnant. This eliminates the risk of overloading and improves processing efficiency.

The conveying blades 32 are formed to extend on the road in the axial direction, and at least one or a plurality of them are provided at equal intervals, and as shown in FIG. 3, two are disposed radially toward the center of the axis. The conveying blade 32 is formed to be inclined at an oblique angle about 3 to 30 degrees from the axis center line as shown in the drawing to smoothly convey the resin chip forward.

Next, the drive motor 36 is provided in the front drive unit 23 of the shaft 20 to rotate the shaft at a high speed through a predetermined power transmission means, preferably an electric motor. The power transmission means is composed of a belt and pulley, a chain and a sprocket, a gear and a transmission, and the like, and a belt driving method for transmitting rotational force through the belt and the driving wheel 34 coupled to the end of the shaft is suitable. . In addition, the shaft 20 is coupled to the balance wheel 38 to the front drive unit 23, the shaft rotational force is increased, and even when an overload occurs inside the drum, the powerful driving force is exhibited to smoothly rotate the shaft and surface treatment It is stable.

The heater 40 is to increase the temperature of the coating resin chip (R) by supplying heat, preferably an electric heater, is connected to the inlet 14 of the drum 10 through the preheating pipe 42 The internal temperature of the inlet is kept within 25-50 degrees Celsius. In other words, by preheating the coating resin chip (R) injected into the inlet to increase the temperature within the range of 25 ~ 50 degrees C so that the paint (P) of the surface is easily peeled off. At this time, if the temperature is higher than 50 degrees Celsius, the strength of the resin chip is lowered, there is a risk of falling off and agglomeration is not good.

The housing 50 surrounds the circumference of the drum 10 and is accommodated therein, and the support 19 is installed at regular intervals, and blocks the paint P discharged from the drum 10 from leaking outside. . The paint P collects through the cone part 52 formed at the bottom to the paint recovery port 54 at the lower end and is sent to the dust collector 56 through the recovery port 54. In the dust collector 56, the paint (P) and the dust is separated and put in a packaging container (vinyl, bag, etc.) to be safely treated.

The blower 60 injects air into the drum 10 to forcibly discharge the paint P and lowers the internal temperature to prevent the resin chip from melting due to overheating. The blower 60 is connected to the rear end of the shaft 20 through the air pipe 62 and injects air into the air passage 24, so that the drum 10 through the air chamber 26 and the through hole 28. Air is injected into the interior. An end of the shaft 20 is provided with an air joint 64 to which an air pipe 62 is connected so as to supply air to the shaft that rotates.

The present invention is provided with a chip outlet 70 for guiding the resin chip (R ') at the outlet 15 of the drum 10, the guide ring 72 is provided inside the chip outlet (70). The outlet 15 is characterized in that it is configured to narrow toward the outside. In other words, the chip outlet 70 is coupled to the front side of the drum 10 and connected to the outlet 15, and as shown in FIG. 5, the diameter gradually decreases toward the outside. In addition, the guide ring 72 is interlocked with the driving part 23 in front of the shaft inward, and the diameter thereof is extended toward the outside, so that the outlet 15 is located between the chip outlet 70 and the guide ring 72. A narrower chip discharge passage H is formed. That is, as described above, the resin chip R 'being surface-treated in the drum is prevented from scattering to the outside, and the coating resin chip is extended in the drum to prevent the paint chip from being discharged in the remaining state. Since the surface can be completely treated, the processing efficiency is further improved.

The present invention is characterized in that it comprises a; cooler 66 for supplying low-temperature cold air through the air pipe (62). In the process of surface-treating the coating resin chip inside the drum 10, a lot of heat is generated while the blade 30 and the chip rotate at high speed, and the air supplied to the air chamber 26 as described above It acts to lower. By the way, when the processing capacity is excessive or there is overheating in the interior, the cool air generated from the cooler 66 is supplied to the air pipe 62 to lower the temperature inside the drum and to be able to control quickly and accurately. In addition, a configuration including a temperature sensor (not shown) and a pressure sensor (not shown) for sensing the temperature inside the drum.

Further, the present invention provides a blender 81 for blending a resin chip (R ') having a surface treatment, a resin chip (R') having a surface treatment and a synthetic resin of another material; An extruder 82 which receives the compounded material from the blender 81 and extrudes it into a plate shape; And a grinder 83 which receives the extruded material extruded from the extruder 82 and pulverizes it.

The effect which arises by including the compounding machine 81, the extruder 82, and the grinder 83 further is demonstrated. When the coated resin chip (R) treated by the present invention is made of ABS material, the resin chip (R '), polycarbonate [PC], and additives and the like which have been surface-treated are blended with the blender 81, and then blended. When the material is extruded by the extruder 82 and pulverized by the grinder 83, the material of the PC and the ABS are combined. Through this, the user of the present invention can peel off the paint only in the coating resin chip (R), it can create a greater value added than when delivered to other companies.

10: drum, 12: hole, 12a: burr, 14: inlet, 15: outlet, 16: metering feeder, 18: hopper, 19: support, 20: shaft, 20a: first peeling part, 20b: second peeling part 21: inlet, 22: screw, 23: drive, 24: air passage, 26: air chamber, 28: through hole, 30: blade, 32: transfer blade, 34: drive wheel, 36: drive motor, 38: balance Wheel, 40: heater, 42: preheating body, 50: housing, 52: cone part, 54: paint recovery port, 56: dust collector, 58: collection box, 60: blower, 62: air tube, 64: air joint, 70: chip Outlet port, 72: guide ring, 81: mixer, 82: extruder, 83: grinder, H: chip discharge passage

Claims (7)

In the paint peeling device of the recycled waste coating resin chip,
It is installed in the front and rear longitudinal direction, the paint resin chip (R) is injected into the rear inlet 14 and a plurality of holes formed on the surface of the paint (P) generated during the surface treatment of the paint resin chip (R) The drum 10 is discharged to the outside through the 12, the resin chip (R ') surface treatment is completed is discharged to the outlet 15 of the front;
Both sides are installed to be rotated at a high speed in a state in which the drum 10 is axially inserted therethrough, and a screw 22 formed at the rear is provided inside the inlet 14 to transfer the coating resin chip R to the front. Shaft 20 to form a plurality of blades 30 on the circumferential surface to separate the paint (P) of the coating resin chip (R);
A drive motor 36 for rotating through a power transmission means coupled to the front end of the shaft 20;
A heater (40) for supplying heat through a preheating tube (42) connected to the inlet (14) of the drum (10) to maintain an internal temperature within a range of 25 to 50 degrees Celsius;
A housing 50 having a paint recovery port 54 for wrapping paint circumference of the drum 10 to block the outflow of the paint P and collecting a paint P therein; And,
The air chamber 26 formed in the shaft 20 is opened into the drum 10 through the through hole 28 of the surface, and the air passes through the air pipe 62 connected to the rear end of the shaft 20. And a blower (60) for injecting air into the chamber (24),
A burr (10a) is formed around the hole (10) in the direction toward the shaft (20), the paint peeling apparatus of the recycled waste coating resin chip.
The method of claim 1,
The inlet 14 is characterized in that the fixed-quantity feeder (16), characterized in that the paint peeling device of the recycled waste coating resin chip.
The method of claim 1,
The shaft 20,
A first peeling part 20a forming a predetermined number of blades 30 at equal intervals in front of the screw 22 to first peel off the paint P on the surface of the coating resin chip R; And,
The number of blades 30 formed at equal intervals in front of the first peeling part 20a than the first peeling part 20a is equal to the amount of paint P remaining on the surface of the coating resin chip R. And a second peeling unit (20b) for secondary peeling in greater detail. The paint peeling apparatus of the recycled waste coating resin chip.
The method of claim 1,
The shaft 20 is provided with a transfer blade 32 in the middle of the circumferential surface is configured to prevent the congestion of the coating resin chip (R), the paint peeling apparatus of the recycled waste coating resin chip .
The method of claim 1,
A chip outlet 70 for guiding the resin chip R 'is provided at the outlet 15 of the drum 10, and a guide ring 72 is provided inside the chip outlet 70 to provide an outlet 15. The paint peeling device of the recycled waste coating resin chip, characterized in that configured to narrow toward the outside).
The method of claim 1,
And a cooler (66) for supplying cold air at low temperatures through the air pipe (62).
The method of claim 1,
A blender (81) for blending a resin chip (R ') having a surface treatment, a synthetic resin of another material with the resin chip (R') having a surface treatment;
An extruder 82 which receives the compounded material from the blender 81 and extrudes it into a plate shape; And,
And a grinder (83) for receiving and extruding the material extruded from the extruder (82).

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