KR20020095562A - Method and apparatus for separating cover sheet and contaminant from plastic piece to be recycled - Google Patents

Abstract

PURPOSE: Provided is a separation equipment of extraneous matters on protection paper bound to pieces of recyclable plastic resin which separates extraneous matters from pieces of recyclable plastic resin so that it helps to remove extraneous matters clearly. CONSTITUTION: In the separation equipment which separates the extraneous matters from pieces of recyclable plastic resin with including a box-typed housing(14) and a colliding device in the housing, the separation equipment of the extraneous matters on protection paper bound to pieces of recyclable plastic resin is characterized by inserting pieces of plastic resin into the housing and causing collision between the colliding device and the piece of plastic resin or between the pieces of plastic resin to remove the extraneous matters from the pieces of plastic resin.

Description

Method and device for separating foreign substances such as protective paper attached to the pieces of plastic resin to be recycled {METHOD AND APPARATUS FOR SEPARATING COVER SHEET AND CONTAMINANT FROM PLASTIC PIECE TO BE RECYCLED}

The present invention relates to a method and apparatus for separating foreign matter attached to a piece of plastic resin to be recycled, and more particularly, to a method and apparatus for separating foreign matter such as an attached protective paper.

Recently, technologies for recycling various materials discarded in consideration of environmental problems have been developed. Plastic resin materials are also recycled, and one method thereof is described in Korean Patent No. 288387 (Chip Regeneration Method and Chip Regeneration Method of Synthetic Resin) held by the present applicant. Highly recyclable plastic resin pieces include pieces of plastic extruded material (hereinafter referred to as 'profile pieces' or 'scraps') among those skilled in the art. Profiles are often used as window frame materials. Cutting long extrusions to create a window frame results in useless pieces ('scraps'). To recycle these pieces, it is necessary to remove the various foreign matter attached to the pieces. Among the foreign matters, in particular, surface protective paper (also called a protective sheet or a protective tape) is not easy to remove, and it is currently removed manually by a person.

The object of the present invention in consideration of the above problems is to provide a method and apparatus for separating foreign matter from pieces of plastic resin to be recycled.

In particular, it is an object of the present invention to provide a method and apparatus for separating protective paper attached to a piece of plastic resin.

1 is a perspective view of a piece of plastic resin to be recycled

Figure 2 is a cross-sectional view of the foreign matter separating apparatus according to the first embodiment of the present invention

Figure 3 is a cross-sectional view of the foreign matter separating apparatus according to a second embodiment of the present invention

According to one aspect of the invention, to separate the foreign matter from the plastic resin pieces to be recycled,

Cylindrical housing,

By including a collision device located in the housing,

An apparatus is provided for separating a foreign material from a plastic resin piece into the housing, and causing a collision between the impact device and the plastic resin piece or between the plastic resin piece to separate the foreign material from the plastic resin piece.

In a preferred embodiment, a gas or liquid is flowed into the housing to remove debris. The impingement device has a rotary blade or a rotating cylinder.

According to another aspect of the invention, to separate the foreign matter from the plastic resin pieces to be recycled,

Putting a piece of plastic resin into the housing;

Removing the foreign matter from the plastic resin pieces by colliding the plastic resin;

Passing the fluid into the housing;

A method for separating foreign matter from pieces of plastic resin is provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a profile piece (scrap) is described as an example, but the present invention is not limited thereto and may be applied to any kind of plastic resin pieces to be recycled.

Referring to Figure 1, there is shown a profile scrap 6, which is one of the pieces of plastic resin to be recycled. This scrap 6 is a material remaining after cutting and using an extruded product made of plastic resin such as PVC. This scrap 6 is recycled, one method of which is shown in Korean Patent No. 288387 (chip recycling method and chip recycling method of synthetic resin paper). The matter described in the said patent becomes a part of this specification.

Protective paper 8 is attached on the scrap 6. The protective paper 8 is usually printed on a plastic film with an adhesive of a manufacturer, etc., and is not adhesive. This protective paper 8 prevents scratches or scratches on the profile while transporting or working the profile.

2, the foreign matter separating apparatus 10 according to the first embodiment of the present invention includes a frame 12 and a housing 14 fixed on the frame. The frame 12 has a supporting plate 16 and a leg 18 to which the housing 14 is fitted and fixed in the middle thereof.

The housing 14 is fixed to the frame 12. The housing 14 has a cylindrical side wall 20. The side wall 20 has a scrap outlet 21 below it. An inclined cover 23 is provided on the side wall 20. The housing 14 is provided with an air discharge passage 22 connected to the inclined cover 23. The upper cover 23 of the housing 14 is provided with a scrap inlet 24. The scrap inlet 24 is provided with a lid that can be opened and closed.

The bottom plate 26 is provided below the side wall 20. The bottom plate 26 is provided with a hole 28 to allow air to pass through. It is also possible to form an air passage by forming part of the bottom plate 26.

Below the bottom plate 26 is provided with an air supply passageway 30 leading to the side wall 20. The air supply passage 30 of the bottom plate 26 is gradually narrower in a conical shape as it moves away from the side wall 20, and extends laterally. At the end of the air supply passage 30, a blower 32 is provided.

The foreign matter separation device 10 has a rotating cylinder. The rotating cylinder is comprised by the cylinder 34 located in the housing 14, and a drive device, such as the 1st rotating shaft 44. As shown in FIG. The barrel 34 is cylindrical and rotatable. The barrel has a cylindrical sidewall 38 and a bottom 40. The inner wall of the cylinder 34 is provided with a plurality of protrusions 36 extending along the inner circumferential surface. In the above description, the protrusion 36 extends along the circumferential surface, but the present invention is not limited thereto. Unlike the above, the protrusions may be formed by a plurality of protrusions (for example, hemispherical, truncated, pyramidal projections) installed on the inner wall of the barrel 34 regularly or irregularly. Holes 42 are formed in the bottom 40. The scrap outlet 43 is provided near the bottom 40 of the barrel 34.

The first rotating shaft 44 is fixed to the center of the bottom 40 of the barrel 34. Although not shown in detail, a bearing is provided on the bottom plate 26 of the housing 14 to support the first rotation shaft 44. A driven pulley 46 is provided at the end of the first rotating shaft 44 extending downward through the bottom plate 26. The drive motor 48 is fixed to the frame 12, and the drive pulley 50 is mounted to the shaft of the motor. The belt 52 is connected between the driving pulley 50 and the driven pulley 46. A hole is provided in the wall of the air supply passage 30 for the belt 52.

The foreign matter separation device 10 includes a rotating body. The rotating body is composed of a driving device such as a rotary blade 54 and a second rotating shaft 56 positioned in the barrel 34. Rotating blades 54 are arranged below and two to stir the scraps received in the barrel (34). The rotary blade 54 is disk shaped as shown in FIG. However, the present invention is not limited thereto, and a plurality of wings may be attached to the hub, such as a fan blade.

The rotary blade 54 rotates about the same axis as the cylinder 34. To this end, the rotary blade 54 is fixed to the second rotary shaft 56. The second rotary shaft 56 is fitted to pass through the center of the first rotary shaft 44. The second rotary shaft 56 is supported to be rotatable about the first rotary shaft 44. Although not shown in detail, a bearing is mounted on the first rotating shaft 44 to support the rotation of the second rotating shaft 56. A driven pulley 58 is installed at the end of the second rotating shaft 56 extending through the first rotating shaft 44. The drive motor 60 is fixed to the frame 12, and the drive pulley 62 is mounted to the shaft of the motor. A belt 64 is connected between the drive pulley 62 and the driven pulley 58. A hole is provided in the wall of the air supply passage 30 for the belt 64.

Hereinafter, the operation of the foreign matter separation device 10 according to the first embodiment will be described. First, the scrap inlet 24 in the upper portion of the housing 14 is opened, the scrap is put into the barrel 34 and the lid is closed. Thereafter, the driving motors 48 and 60 and the blower 32 are operated. Then, the cylinder 34 and the rotary blade 54 rotates, the cylinder 34 and the rotary blade 54 rotate in opposite directions to each other. The scraps then hit themselves and also against the rotary blade 54 and against the inner wall of the barrel 34, in particular the protrusion 36. These collisions cause foreign matter such as protective paper and dust to fall from the scrap. The separated foreign matter is blown upward by the wind supplied from the blower 32 through the air supply passage 30 and the hole 28 of the bottom plate 26 and the hole 42 of the barrel 34. Discharge along 22. When the removal of foreign matter is completed, the scrap discharge port 43 provided in the barrel 34 and the scrap discharge port 21 of the housing is opened to take out the scrap from which foreign substances have been removed and handed over to the next scrap recycling process.

In the above description, it has been described that both the rotary blade 54 and the barrel 34 rotate in opposite directions, but in some cases, only the rotary blade 54 may rotate. Moreover, the structure which rotates only the cylinder 34 may be sufficient. Each rotation speed may vary depending on the size, amount of scrap, the adhesive strength of the foreign matter attached.

The foreign matter separation device 110 according to the second embodiment of the present invention is different from the foreign material separation device 10 of the first embodiment in that the fluid used to separate and discharge the foreign matter. In the second embodiment water is used.

2, the foreign matter separating apparatus 110 according to the first embodiment of the present invention includes a frame 112 and a housing 114 fixed on the frame. The frame 112 includes a supporting plate 116 and a leg 118 on which the housing 114 is mounted and fixed.

The housing 114 has a cylindrical sidewall 120. The side wall 120 has a scrap outlet 121 below it. The flat cover 123 is covered on the side wall 120. The cover 123 is provided with a scrap inlet 124. Scrap inlet 124 is provided with a lid that can be opened and closed.

A fluid (water) inlet 130 is provided directly under the cover 123. The fluid outlet 122 is formed at the sidewall 120 at a position slightly lower than the fluid inlet 130. Therefore, during operation, fluid (preferably water) is supplied to the fluid inlet 130 to fill and overflow the housing 114 and the barrel 134 to be described later to the fluid outlet 122.

The bottom plate 126 is provided below the side wall 120. The bottom plate 126 has no holes unlike in the first embodiment.

The foreign matter separation device 110 is provided with a rotating cylinder. The rotating cylinder is comprised of the cylinder 134 located in the housing 14, and a drive device, such as the 1st rotating shaft 144. As shown in FIG. Since the configuration of the rotating cylinder is the same as in the first embodiment, detailed description thereof will be omitted.

The foreign matter separation device 110 has a rotating body. The rotating body is composed of a driving device such as a rotary blade 154 and a second rotating shaft 156 located in the barrel 134. Since the configuration of the rotating body is also the same as in the first embodiment, detailed description is omitted.

In order to facilitate understanding of the embodiment, in the first embodiment, the first one was added to the reference numerals attached to the respective members of the rotating cylinder and the rotating body, and used as reference numerals to indicate the corresponding members of the second embodiment.

Hereinafter, the operation of the foreign matter separation device 110 according to the second embodiment will be described. First, the scrap inlet 124 in the upper portion of the housing 114 is opened, the scrap is put into the barrel 134 and the lid is closed. While supplying water continuously, the drive motors 148 and 160 are operated. Then, the cylinder 134 and the rotary blade 154 rotates, the cylinder 134 and the rotary blade 154 rotate in opposite directions to each other. The scrap then hits themselves and also against the rotor blades 154 and against the inner wall of the barrel 134, in particular the protrusion 136. These collisions cause foreign matter such as protective paper and dust to fall from the scrap. The separated foreign matter floats above the surface of the water and, with the excess water, exits the fluid outlet 122. When the removal of the foreign matter is completed, the scrap discharge port 143 and the scrap discharge port 121 of the housing 114 provided in the barrel 134 is opened and the scrap removed from the foreign material is taken out and passed to the next scrap recycling process.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. It will be apparent to those skilled in the art that modifications and variations of the embodiments are possible without departing from the spirit and scope of the invention and that such modifications and variations also fall within the invention.

According to the above configuration of the present invention, it is possible to separate the foreign matter attached to the plastic resin pieces to be recycled. In particular, it is possible to use a profile material and remove the protective paper attached to the remaining scrap.

Claims (11)

To separate foreign matter from pieces of plastic resin to be recycled. Cylindrical housing, By including a collision device located in the housing, Placing a piece of plastic resin in the housing and separating the foreign matter from the piece of plastic resin which causes a collision between the impact device and the piece of plastic resin or between the pieces of plastic resin to separate the foreign matter from the piece of plastic resin. The method of claim 1, wherein the housing is configured to allow gas to pass from the bottom to the top, A device for separating foreign matter from pieces of plastic resin, characterized in that the foreign matter removed by the gas passing through the housing moves upward with the gas. The method of claim 1, wherein the housing is accommodated by the liquid, A device for separating foreign matter from pieces of plastic resin, characterized in that the foreign matter rises by the liquid. According to claim 3, wherein the housing has a liquid inlet for the liquid entering and the liquid outlet located in the upper, by continuously supplying the liquid, A device for separating the foreign matter from the plastic resin pieces, characterized in that the foreign matter floated with the liquid flowing through the liquid discharge port is discharged. The device for separating foreign matter from pieces of plastic resin according to any one of claims 1 to 4, wherein the collision device comprises a rotary blade. According to claim 5, The impingement device is provided with a cylinder that rotates on the same axis as the axis of the rotary blade, the rotary blade is located in the cylinder, the passage and the rotary blades are rotated in opposite directions to each other Device for separating foreign matter from pieces of plastic resin. The device for separating foreign matters from pieces of plastic resin according to any one of claims 1 to 4, wherein the collision device includes a rotating cylinder, and a protrusion is formed on an inner wall of the barrel. To separate foreign matter from pieces of plastic resin to be recycled. Putting a piece of plastic resin into the housing; Removing the foreign matter from the plastic resin pieces by colliding the plastic resin; Passing the fluid into the housing; A method for separating foreign matter from pieces of plastic resin. 10. The method of claim 8 wherein the fluid is air flowing from the bottom to the top of the housing. 9. The method of claim 8 wherein the fluid is water and passes through a housing such that the foreign matter rises above the water and is discharged. The method of any of claims 8 to 10, wherein the foreign matter is a protective paper attached to the piece of plastic resin.