JP2002336793A - Safety glass separation and recovery apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for efficiently separating and recovering glass pieces from an intermediate film while keeping the continuity with front and rear processes in a series of processes from crushing to recovery. SOLUTION: Safety glass W sent out to a mesh material 36 of a first feed passage 31 from a water tank 20 is gradually moved to a downstream side by vibration and glass pieces remaining on the undersurface of the intermediate film P are shaken off downwardly to be recovered in a box 37 through a guide 38. The safety glass W is reversed at the time of transfer from the first feed passage 31 to a second feed passage 32 and the glass pieces adhering to the surface becoming an undersurface by reversal are recovered in a box 42 through a mesh material 40. The intermediate film P from which the glass pieces are peeled is recovered in a box 43.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating and recovering laminated glass used for a windshield of an automobile.

[0002]

2. Description of the Related Art Laminated glass is used as a windshield of an automobile or a window glass of a building. The laminated glass is obtained by joining and integrating an outer glass (for example, tempered glass) and an inner glass (for example, ultraviolet absorbing glass) with an intermediate film (for example, polyvinyl butyral).

In consideration of effective use of resources at the time of end-of-life vehicles, it is necessary to separate and collect glass (outer glass and inner glass) and resin (intermediate film). However, even if the glass is crushed finely, the interlayer cannot be crushed,
Fine glass pieces remain firmly bonded to the interlayer and cannot be easily separated.

Japanese Patent Laid-Open No. 7-177 discloses a technique for separating polyvinyl butyral by utilizing the property of polyvinyl butyral, that is, the property of absorbing water and swelling when contacted with water, so that the bonding strength becomes extremely weak.
No. 47 is proposed.

[0005] Japanese Patent Application Laid-Open No. 7-17747 discloses that after crushed into a laminated glass, the crushed laminated glass is put in a mesh body and immersed in water. The mesh is vibrated up and down such that one side of the laminated glass is at the top of the collection box, the glass pieces attached to the lower surface are dropped into the collection box, and then the mesh is inverted to form a laminated glass. The other side is turned down, and the mesh is vibrated up and down in the same manner as described above, so that the glass piece attached to the lower surface is dropped into the collection box.

[0006]

As disclosed in the above-mentioned prior art, if the laminated glass is vibrated, glass pieces adhering to the swollen interlayer film can be easily separated. However, the above-mentioned prior art does not propose a specific structure on how to vibrate the laminated glass and how to invert the net. If the laminated glass is vibrated ignoring the preceding and following steps, the efficiency of separation and recovery may be worsened.
Further, if the laminated glass is manually inverted, the efficiency is low.

Further, the laminated glass often has different compositions, characteristics, colors, and the like between the outer glass and the inner glass.
In such a case, if the outer glass and the inner glass can be separated and collected separately, recycling becomes easier. However, in the above-mentioned prior art, it is shown only to collect in one collection box, and the outer glass and the inner glass cannot be automatically separated.

[0008]

In order to solve the above-mentioned problems, an apparatus for separating and recovering laminated glass according to the present invention comprises a first transportation path and a second transportation path for transporting crushed laminated glass, In these transport paths, the surface on which the crushed laminated glass is placed is made of a mesh material on which glass fragments can fall, and both the first transport path and the second transport path can be vibrated by a vibration device. Further, the first transport path and the second transport path are inclined in directions opposite to each other, and the terminal end of the first transport path faces the second transport path.

If the first transport path and the second transport path are supported on the base via a spring, the transport path can be easily vibrated without transmitting vibration directly to the base. .

In order to separate and recover the intermediate film and the glass piece by the separation and recovery apparatus having the above-mentioned structure, first, the laminated glass bonded via the intermediate film is crushed, and then the intermediate film is hydrated by immersion. Thereafter, the swollen intermediate film to which the glass fragments are adhered is conveyed on a first conveying path made of a mesh material while the conveying path is vibrated so that the glass pieces adhering to the lower surface of the intermediate film are meshed. , And then transfer the swollen intermediate film on which the glass shards are adhered on the second transport path by turning it upside down and vibrating the transport path while transporting the intermediate film on the second transport path. The glass pieces adhering to the lower surface of are collected through a mesh material.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall view of a separation and collection system to which a separation and collection device for laminated glass according to the present invention is applied. In the separation and collection system 1, a water tank 20 is continuously arranged downstream of a crushing device 10 for crushing a laminated glass G. Then, a separation and recovery device 30 is arranged downstream of the water tank 20. The stocker 2 is arranged near the crushing device 10.

The crushing device 10 has a pair of crushing rollers 12, 12 at the end of a feed roller 11. The crushing roller 12 has a large number of spike-shaped projections 13 implanted on its surface in a staggered manner, and finely crushes the laminated glass G sent between the crushing rollers 12. Since the intermediate film P is not crushed, the laminated glass W has a state in which a large number of crushed glass pieces adhere to the surface of the intermediate film P.

Further, since a part of the glass piece adhering to the lower surface of the intermediate film P is separated by gravity, the glass piece is collected via a duct-like guide 14 into a box 15 arranged at the bottom of the crushing apparatus. I am trying to do it.

A number of pallets 21 are arranged in a water tank 20 adjacent to the crushing device 10. These pallets 21 circulate in the water tank 20 by driving a chain 22. Room temperature water or hot water is supplied into the water tank 20. In the case of room temperature water (0 to 20 ° C.), the laminated glass W needs to be immersed in the water tank for 24 hours, but in the case of warm water (80 ° C.), the interlayer swells sufficiently in about 1 hour. . Therefore, the moving speed of the pallet 21 is adjusted according to the temperature of the water. In the illustrated example, a water tank is used, but a steam chamber or a mist chamber may be used.

On the other hand, the separation / recovery device 30 disposed adjacent to the downstream side of the water tank 20 has a first transport path 31 and a second transport path 32 as shown in FIG. Road 31
Is supported on a base 33 via a spring 34 so that the downstream side is slightly inclined downward, and its end faces above the second transport path 32, and the first transport path 31 is connected to the vibrating device 3.
5, and its transport surface is formed of a mesh material 36 such as a wire mesh.

A collection box 37 is disposed below the first transfer path 31. A duct-shaped guide 38 for guiding glass fragments adhered to one surface side of the intermediate film is disposed in the collection box 37 in the first transfer path. It is arranged between the road 31 and the collection box 37.

The second transport path 32 is connected to the first transport path 3.
1 is supported by a base 39 via a spring so as to incline in a direction opposite to the direction 1, and the inclination angle is tighter than that of the first conveyance path 31. The second transport path 32 also has a transport surface made of a mesh material 40 such as a wire mesh, and is connected to a vibration device 41.

Below the second transport path 32, a collection box 4 for receiving glass fragments adhered to the other side of the intermediate film.
2 is disposed, and the lower end of the second transport path 32 faces the intermediate film collection box 43.

In the above, the laminated glass W sent out from the water tank 20 onto the mesh material 36 of the first transport path 31 gradually moves to the downstream side by vibration as shown in FIG. The glass piece remaining on the lower surface is shaken downward and collected in the box 37 via the guide 38.

When moving from the first transport path 31 to the second transport path 32, the laminated glass W is inverted, and the glass pieces attached to the inverted and lower surface are passed through the mesh material 40 into a box. Collected in 42. The intermediate film P from which the glass pieces have been peeled is collected in the box 43.

[0021]

According to the present invention as described above,
After crushing the laminated glass, the intermediate film is swollen, and the glass is separated from the intermediate film. When the glass is vibrated to separate and collect the glass, the glass pieces can be easily separated from the intermediate film.

Further, according to the present invention, no special driving force is required for the conveyance, and the vibration is applied to the crushed laminated glass, so that the conveying path is inclined. Moves. In addition, no special device is required because the laminated glass is turned over by itself when moving from the first transport path to the second transport path. Therefore, it is possible to provide a compact device having high separation and recovery efficiency.

[Brief description of the drawings]

FIG. 1 is an overall view of a laminated glass separation and recovery system according to the present invention.

FIG. 2 is an overall perspective view of a separation and recovery device.

FIG. 3 is a diagram illustrating the operation of the separation and recovery device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Separation collection | recovery system, 2 ... Stocker, 10 ... Crushing apparatus, 11 ... Feeding roller, 12 ... Crushing roller, 13 ... Projection, 14 ... Guide, 15 ... Collection box, 20 ... Water tank,
21: Pallet, 22: Chain, 30: Separation / recovery device, 31: First transport path, 32: Second transport path, 33:
Base, 34: Spring, 35: Vibration device, 36: Mesh material, 37: Collection box, 38: Guide, 39: Base, 40: Mesh material, 41: Vibration device, 42, 43 ...
Collection box.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D004 AA18 BA10 CA04 CA08 CA22 CA50 CB13 CB31 CB45 CC03 4D021 AA03 AB02 AC01 CA07 CB11 DA03 EA10 EB01 4G061 AA02 BA02 CA02 CB03 CB19 CD02 CD18

Claims (1)

[Claims] 1. A laminated glass separation and recovery device for separating and recovering crushed laminated glass into glass pieces and an intermediate film, wherein the separation and recovery device includes a first transporting path for transporting the crushed laminated glass and a second transport path. A transport path is provided, and these transport paths are constituted by a mesh material on which the crushed laminated glass is placed, on which a glass piece can fall, and both the first transport path and the second transport path are vibrated. The apparatus can be vibrated, and the first transport path and the second transport path are inclined in directions opposite to each other, and the terminal end of the first transport path faces the second transport path. Laminated glass separation and recovery equipment.