Separation device of laminated glass

Abstract

To provide a technique for smoothly separating a glass plate and an intermediate film constituting laminated glass.SOLUTION: A separation device of laminated glass has a previously crushed first glass plate, an intermediate film and a previously crushed second glass plate in this order. The separation device includes a rotating drum for storing the laminated glass therein, a treatment tank which surrounds the rotating drum and stores a treatment liquid in a lower space inside the rotating drum, and a motor for rotating the rotating drum. The rotating drum has a screen hole formed so as to penetrate in the rotating drum. The screen hole is smaller than a resin piece derived from the intermediate film, and selectively transmits a glass piece derived from the first glass piece and the second glass piece.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to a separation device for laminated glass. [Background technology]

[0002] Patent Document 1 describes a separation device that separates the glass sheets and the interlayer film that constitute laminated glass. The separation device includes a liquid tank that contains a treatment liquid, a barrel container that is rotated inside the liquid tank, and a temperature adjustment device that adjusts the temperature of the treatment liquid. To prepare laminated glass, the glass sheets are crushed in advance, then placed inside the barrel container and immersed in the treatment liquid. By rotating the barrel container, shear stress can be applied to the glass sheets and the interlayer film. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2007 / 111385 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 describes the separation of the glass sheets and the interlayer film that constitute the laminated glass, but does not describe the size of the hole in the barrel container. Conventionally, the separated glass sheets and the interlayer film after crushing tend to accumulate inside the barrel container, and there was a risk that the separated glass sheets and the interlayer film after crushing might reattach to each other.

[0005] An object of one aspect of the present disclosure is to provide a technique for smoothly separating a glass sheet and an interlayer film that constitute laminated glass. [Means for solving the problem]

[0006] A laminated glass separation device according to one embodiment of the present disclosure separates a first glass sheet, an interlayer film, and a second glass sheet, which have been crushed in advance, from the first glass sheet and the interlayer film, and separates the second glass sheet and the interlayer film, in a laminated glass having, in that order. The separation device includes a rotating drum that houses the laminated glass therein, a treatment tank that surrounds the rotating drum and stores a treatment liquid in a lower space inside the rotating drum, and a motor that rotates the rotating drum. The rotating drum has screen holes formed through the rotating drum. The screen holes are smaller than resin pieces derived from the interlayer film, and selectively allow glass pieces derived from the first glass sheet and the second glass sheet to pass through. Effect of the Invention

[0007] According to one aspect of the present disclosure, the glass plates and the interlayer film that constitute the laminated glass can be smoothly separated. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a flow chart showing a method for recycling laminated glass according to one embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of laminated glass as viewed from the inside of a vehicle. [Diagram 3] FIG. 3 is a diagram showing an example of a planned cutting line of a laminated glass as viewed from the inside of a vehicle. [Figure 4] FIG. 4 is a cross-sectional view showing an example of laminated glass. [Diagram 5] FIG. 5 is a cross-sectional view showing an example of step S102 in FIG. [Figure 6] FIG. 6 is a cross-sectional view showing an example of step S103 in FIG. [Figure 7] FIG. 7 is a diagram showing an example of a separation device. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7, showing an example of a state in which the rotation center line of the rotating drum is horizontal. [Figure 9]FIG. 9 is a cross-sectional view showing an example of a state in which the rotation center line of a rotating drum is inclined. [Figure 10] FIG. 10 is a cross-sectional view taken along line XX in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each drawing, the same or corresponding components are denoted by the same reference numerals, and the description may be omitted. In the specification, the symbol "~" indicating a range of values ​​means that the values ​​before and after the symbol are included as the lower and upper limits.

[0010] [Laminated glass] First, an example of laminated glass 10, which is a vehicle window glass, will be described with reference to Fig. 2 to Fig. 4. As shown in Fig. 4, the laminated glass 10 has, for example, a first glass plate 11, an interlayer film 12, and a second glass plate 13, in this order from the vehicle exterior side to the vehicle interior side. The interlayer film 12 bonds the first glass plate 11 and the second glass plate 13 together. The number of glass plates constituting the laminated glass 10 may be three or more. In that case, the number of interlayer films constituting the laminated glass 10 is two or more.

[0011] The first glass plate 11 is made of inorganic glass. Examples of inorganic glass include soda lime glass and aluminosilicate glass. Similarly, the second glass plate 13 is made of inorganic glass. The inorganic glass may be either unstrengthened glass or tempered glass. Unstrengthened glass is made by forming molten glass into a plate shape and slowly cooling it. Tempered glass is made by forming a compressive stress layer on the surface of unstrengthened glass. The tempered glass may be either physically strengthened glass (for example, air-cooled tempered glass) or chemically strengthened glass.

[0012] Although not shown, the first glass sheet 11 is formed to be convex toward the outside of the vehicle. Similarly, the second glass sheet 13 is formed to be convex toward the outside of the vehicle. Gravity forming, press forming, or the like is used for bending the glass sheet. In bending, the uniformly heated glass sheet may be rapidly cooled from a temperature near its softening point, and compressive stress may be generated on the glass surface due to the temperature difference between the glass surface and the inside of the glass, thereby physically strengthening the glass surface. After bending, the glass surface may be chemically strengthened by generating compressive stress on the glass surface by an ion exchange method or the like.

[0013] The intermediate film 12 is formed of a typical resin, for example, a thermoplastic resin such as polyvinyl butyral resin (PVB) or ethylene-vinyl acetate copolymer resin (EVA). The intermediate film 12 exhibits adhesiveness when heated. The intermediate film 12 may have either a single layer structure or a multiple layer structure.

[0014] When viewed from the inside of the vehicle, the laminated glass 10 may have a transmission region A1 that transmits visible light and a light-shielding region A2 that blocks visible light. The light-shielding region A2 is, for example, an area shown by a dot pattern in Figures 2 and 3, and is formed along the outer periphery of the laminated glass 10. The light-shielding region A2 is formed by at least one of the first light-shielding layer 14 and the second light-shielding layer 16.

[0015] As shown in FIG. 4, the first light-shielding layer 14 is provided, for example, on the surface 11a of the first glass sheet 11 facing the vehicle interior. The first light-shielding layer 14 hides the first metal layer 15, which will be described later, from the exterior of the vehicle. The first metal layer 15 is formed on the surface of the first light-shielding layer 14 facing the vehicle interior. The first light-shielding layer 14 is formed by applying a ceramic color paste to the surface 11a of the first glass sheet 11 facing the vehicle interior and firing the paste. The ceramic color paste contains, for example, glass powder and a black pigment. The firing of the ceramic color paste may be performed simultaneously with the heat treatment for bending the first glass sheet 11.

[0016] The second light-shielding layer 16 is provided, for example, on the surface 13a of the second glass sheet 13 facing the vehicle interior. The second light-shielding layer 16 hides the second metal layer 17, which will be described later, from the exterior of the vehicle. The second metal layer 17 is formed on the surface of the second light-shielding layer 16 facing the vehicle interior. The second light-shielding layer 16 is formed by applying a ceramic color paste to the surface 13a of the second glass sheet 13 facing the vehicle interior and firing the paste. The firing of the ceramic color paste may be performed simultaneously with the heat treatment for bending the second glass sheet 13.

[0017] As shown in Figures 2 and 3, the laminated glass 10 may have at least one of a first metal layer 15 and a second metal layer 17 in a part of the light-shielding area A2 when viewed from the inside of the vehicle. The first metal layer 15 and the second metal layer 17 are, for example, a heating wire or an antenna wire. The heating wire heats the laminated glass 10 to remove fog (e.g., water droplets) or ice on the surface of the laminated glass 10. The antenna wire receives or transmits radio waves. The first metal layer 15 and the second metal layer 17 may be part of a liquid crystal panel that displays images.

[0018] The laminated glass 10 may have both the first light-shielding layer 14 and the second light-shielding layer 16, or only one of them. The laminated glass 10 may have both the first metal layer 15 and the second metal layer 17, or only one of them. For example, the laminated glass 10 may have the first light-shielding layer 14, the first metal layer 15, and the second light-shielding layer 16, but may not have the second metal layer 17. In this case, the second light-shielding layer 16 hides the first metal layer 15 from the inside of the vehicle.

[0019] The laminated glass 10 is produced by stacking a first glass plate 11, an interlayer film 12, and a second glass plate 13 in this order to produce a laminate, and then pressurizing and heating the produced laminate in an autoclave or the like. Before producing the laminate, the first glass plate 11 and the second glass plate 13 are heat-treated and bent. The laminate may be produced by stacking the second glass plate 13, the interlayer film 12, and the first glass plate 11 in this order.

[0020] The thickness of the laminated glass 10 is preferably 2.8 mm to 10 mm, and more preferably 3.0 mm to 8.0 mm. The thickness of the first glass plate 11 is preferably 1.1 mm to 3.6 mm, and more preferably 1.8 mm to 3.0 mm. The thickness of the second glass plate 13 is preferably 0.5 mm to 2.7 mm, and more preferably 0.5 mm to 2.3 mm. The thickness of the interlayer 12 is preferably 0.5 mm to 3.0 mm, and more preferably 0.5 mm to 2.8 mm.

[0021] The laminated glass according to the present embodiment is not limited to the vehicle window glass (automobile front windshield) exemplified in Figures 2 to 4. The laminated glass may be an automobile window glass such as a rear glass, a side glass, or a roof glass, or a vehicle window glass used in a train or the like.

[0022] [How to recycle laminated glass] 1, a method for recycling laminated glass 10 includes, for example, steps S101 to S103. Step S101 includes cutting the laminated glass 10 with a water jet. Compared to a typical cutting tool, a water jet can prevent the cut surface of the interlayer film 12 from becoming rough and can also prevent the generation of dust.

[0023] 3, step S101 includes cutting the laminated glass 10 into a first cut piece 21 and a second cut piece 22. The first cut piece 21 includes at least one of the first metal layer 15 and the second metal layer 17. On the other hand, the second cut piece 22 includes neither the first metal layer 15 nor the second metal layer 17. When the second cut piece 22 is reused as at least one of a glass raw material and a resin raw material after removing the first cut piece 21, it is possible to prevent metal from being mixed into these raw materials.

[0024] The first cut piece 21 may include a metal layer, such as the first metal layer 15, provided between the first glass sheet 11 and the second glass sheet 13. Unlike the second metal layer 17, the first metal layer 15 is not exposed on the surface of the laminated glass 10 and therefore cannot be removed by grinding, etching, blasting, or the like. Therefore, in order to remove the first metal layer 15, it is preferable to cut the laminated glass 10 into the first cut piece 21 and the second cut piece 22.

[0025] The second cut piece 22 need not include the first metal layer 15 and the second metal layer 17, and may include at least one of the first light-shielding layer 14 and the second light-shielding layer 16. As long as the first light-shielding layer 14 and the second light-shielding layer 16 do not contain lead (Pb), there is no problem if they are mixed into the glass raw material. Note that, when the first light-shielding layer 14 and the second light-shielding layer 16 contain lead, it is preferable that the second cut piece 22 does not include either the first light-shielding layer 14 or the second light-shielding layer 16.

[0026] Before cutting the laminated glass 10, for example, an operator visually checks the positions of the first metal layer 15 and the second metal layer 17 and writes the positions with a marker on the surface of the laminated glass 10. The cutting device captures an image of the marks written on the surface of the laminated glass 10 with a camera (not shown) or the like and processes the image to determine the position of the planned cutting line for the laminated glass 10. The cutting device then cuts the laminated glass 10 along the predetermined planned cutting line.

[0027] The cutting device may cut the laminated glass 10 so that the second cut piece 22 does not include either the first light-shielding layer 14 or the second light-shielding layer 16. In this case, the worker does not need to check the positions of the first metal layer 15 and the second metal layer 17. The cutting device captures an image of the laminated glass 10 with a camera or the like, processes the image, and detects the boundary line between the transparent region A1 and the light-shielding region A2, and determines the position of the planned cutting line based on the detection result.

[0028] 5, step S102 includes crushing the first glass plate 11 and the second glass plate 13 in the second cut piece 22. The second cut piece 22 includes, in this order, a glass piece that is a part of the first glass plate 11, a resin piece that is a part of the interlayer film 12, and a glass piece that is a part of the second glass plate 13.

[0029] In step S102, the glass pieces attached to both sides of the resin piece are crushed. At this time, unlike the glass pieces, the resin pieces are not crushed. This is because the resin pieces are soft and absorb impacts. The second cut pieces 22 after crushing have a configuration in which a large number of glass pieces smaller than the resin pieces are attached to both sides of the resin piece. The multiple solid lines extending in the thickness direction of the glass pieces shown in FIG. 5 represent the state in which the cracks in the glass have progressed.

[0030] The crushing device for crushing the glass pieces in step S102 may be a general one and is not particularly limited. In this embodiment, the crushing device crushes the glass pieces in the second cut pieces 22 to recycle the second cut pieces 22, but may crush the glass pieces in the first cut pieces 21 to recycle the first cut pieces 21.

[0031] 6, step S103 includes separating glass pieces derived from the crushed first glass plate 11 and resin pieces derived from the interlayer film 12, and separating glass pieces derived from the crushed second glass plate 13 and resin pieces derived from the interlayer film 12. The separated resin pieces and glass pieces can be separately collected by utilizing the difference in size. The resin pieces are larger than the glass pieces.

[0032] It is possible to recycle not only glass pieces but also resin pieces. The larger the area of ​​the resin pieces, the higher the recycling efficiency of the resin pieces. The area of ​​the resin pieces is 40,000 mm 2 From the viewpoint of handling, the area of ​​the resin piece is preferably 1,000,000 mm or more (length 200 mm or more, width 200 mm or more). 2 On the other hand, the area of ​​the crushed glass pieces is preferably 2500 mm or less. 2It is preferable that the size is 50 mm or less (length 50 mm or less, width 50 mm or less). The glass pieces may be further crushed after being separated from the resin pieces.

[0033] Step S103 includes immersing the crushed second cut pieces 22 in a treatment liquid to separate the glass pieces and the resin pieces constituting the second cut pieces 22. If the glass pieces are crushed in advance, the treatment liquid can easily penetrate into the interface between the glass pieces and the resin pieces. The treatment liquid preferably contains water. Water can break the hydrogen bonds between the glass pieces and the resin pieces. The temperature of the treatment liquid is preferably 40°C to 80°C. If the temperature of the treatment liquid is 40°C or higher, the effect of breaking the hydrogen bonds can be easily obtained. If the temperature of the treatment liquid is 80°C or lower, the water in the treatment liquid can be prevented from evaporating.

[0034] The treatment liquid preferably further contains a surfactant. The surfactant suppresses adhesion between a part of the resin piece and another part of the resin piece. This suppresses folding of the resin piece and suppresses entrapment of the glass piece inside the folded resin piece. Therefore, separation of the glass piece and the resin piece can be promoted.

[0035] The surfactant is not particularly limited, but examples thereof include those described in Patent Document 1. The content of the surfactant is appropriately set depending on the type of surfactant, but is preferably 0.03% by mass to 2% by mass. From the viewpoint of environmental load, the pH of the treatment liquid is preferably 6.5 to 8.5.

[0036] The method for recycling laminated glass may include steps other than steps S101 to S103. In this embodiment, after removing the first cut pieces 21, the second cut pieces 22 are reused as at least one of a glass raw material and a resin raw material, but if it is possible to remove the metal layer from the first cut pieces 21, it is also possible to reuse the first cut pieces 21 as at least one of a glass raw material and a resin raw material.

[0037] The method for recycling laminated glass may also include a step of recovering at least a portion of the metal layer from the first cut piece 21. The first metal layer 15 and the second metal layer 17 contain, for example, silver (Ag), tungsten (W), copper (Cu), or an alloy thereof. By recovering at least a portion of the metal layer, these metals can be recycled.

[0038] [Laminated glass separation device] Next, an example of the separating apparatus 200 will be described with reference to Figs. 7 to 10. The separating apparatus 200 is used in step S103 above. The separating apparatus 200 separates the first glass plate 11, which has been crushed in advance, from the interlayer 12, and also separates the second glass plate 13, which has been crushed in advance, from the interlayer 12. In this embodiment, the separating apparatus 200 separates the glass pieces and resin pieces constituting the second cut piece 22, but may also separate the glass pieces and resin pieces constituting the first cut piece 21.

[0039] As shown in FIG. 7 and FIG. 8, the separation device 200 includes, for example, a rotating drum 210, a treatment tank 220, and a motor 230. The rotating drum 210 accommodates the laminated glass inside. In this embodiment, the rotating drum 210 accommodates the second cut pieces 22 inside, but may accommodate the first cut pieces 21 inside. The treatment tank 220 surrounds the rotating drum 210 and stores a treatment liquid in a lower space inside the rotating drum 210. In FIG. 8 to FIG. 10, a dashed line L indicates the height of the liquid level of the treatment liquid. The second cut pieces 22 are immersed in the treatment liquid inside the rotating drum 210. The treatment liquid separates the glass pieces and the resin pieces. The motor 230 rotates the rotating drum 210. By rotating the rotating drum 210, a shear stress can be applied to the glass pieces and the resin pieces.

[0040] The rotating drum 210 has a shape symmetrical about the rotation center line R. In this embodiment, the rotating drum 210 has a cylindrical shape as shown in FIG. 10, but may have a square tube shape. The rotating drum 210 has an inlet 211 on one axial side (the right side in FIG. 8) and an outlet 212 on the opposite axial side (the left side in FIG. 8). The second cut pieces 22 are fed into the inside from the inlet 211, and the resin pieces are taken out from the outlet 212 to the outside. The inlet 211 and the outlet 212 are provided separately, but one outlet serving both functions may be provided. The rotating drum 210 also has a screen hole 213 penetrating from the inner peripheral surface to the outer peripheral surface of the rotating drum 210.

[0041] The screen holes 213 are smaller than the resin pieces of the second cut pieces 22, and retain the resin pieces inside the rotating drum 210. The screen holes 213 are larger than the glass pieces of the second cut pieces 22, and selectively allow the glass pieces to pass through. This makes it possible to prevent the glass pieces separated from the resin pieces from adhering again to the resin pieces, and allows the glass pieces and the resin pieces to be smoothly separated.

[0042] The glass fragments that pass through the screen holes 213 fall to the bottom of the treatment tank 220. The bottom of the treatment tank 220 may have an inclined surface 221 that collects the glass fragments by gravity. Multiple (for example, four) inclined surfaces 221 form a pyramid that tapers downward. The glass fragments can be collected at the bottom end of the pyramid. By having multiple pyramids at the bottom of the treatment tank 220, the height of the treatment tank 220 can be made lower than when the bottom has a single pyramid.

[0043] A transmission unit 214 that transmits the rotational driving force of the motor 230 to the rotating drum 210 may be provided on the outer circumferential surface of the rotating drum 210. The transmission unit 214 includes, for example, a gear. Note that the transmission unit 214 may include a pulley, and the rotational driving force of the motor 230 may be transmitted to the rotating drum 210 via a timing belt and a pulley.

[0044] By providing the transmission part 214 on the outer peripheral surface of the rotating drum 210, it is not necessary to provide a rotating shaft on the rotation center line R. This makes it possible to prevent interference between the rotating shaft and the second cut pieces 22, in particular, to prevent the resin pieces from wrapping around the rotating shaft, improving workability. The transmission part 214 is preferably provided at an axial end of the rotating drum 210, and is preferably provided at an end forming the inlet 211 or the outlet 212 (the inlet 211 in Figures 7 and 8).

[0045] Protrusions 215 may be provided on the inner circumferential surface of the rotating drum 210. In this embodiment, the shape of the protrusions 215 is rod-shaped, but it may be plate-shaped. A plurality of protrusions 215 are provided at intervals along the circumferential direction of the rotating drum 210. Also, a plurality of protrusions 215 are provided at intervals along the axial direction of the rotating drum 210.

[0046] The protrusions 215 rotate together with the rotating drum 210, thereby hooking and lifting the second cut pieces 22. Thereafter, the second cut pieces 22 fall under their own weight and are struck against the inner circumferential surface of the rotating drum 210 or the liquid surface of the treatment liquid. This makes it possible to apply shear stress to the glass pieces and the resin pieces.

[0047] The separation device 200 may include a swinging mechanism 240 that swings the rotating drum 210 between a state in which the rotation center line R of the rotating drum 210 is horizontal as shown in Fig. 8 and a state in which the rotation center line R of the rotating drum 210 is inclined as shown in Fig. 9. As shown in Fig. 7, the swinging mechanism 240 has, for example, a pair of fixed frames 241, a swinging shaft 250 horizontally connected to the pair of fixed frames 241, and a swinging frame 251 that is rotated around the swinging shaft 250.

[0048] The pair of fixed frames 241 are provided to sandwich the rotating drum 210. Each of the pair of fixed frames 241 has, for example, a plurality of vertically erected columns 242, a beam 243 horizontally spanning the upper ends of the plurality of columns 242, and a bearing 244 fixed to the beam 243. The pair of bearings 244 provided to sandwich the rotating drum 210 support the oscillation shaft 250 so as to be freely rotatable.

[0049] When viewed from above, the oscillation shaft 250 is disposed so as to be perpendicular to the rotation center line R of the rotating drum 210. In this embodiment, the oscillation shaft 250 is provided at the axial center of the rotating drum 210 (the left-right center in Figs. 8 and 9), but may be provided at one axial end of the rotating drum 210 (the left end or right end in Figs. 8 and 9).

[0050] The oscillating frame 251 supports the rotating drum 210 so as to be rotatable about the rotation center line R. The oscillating frame 251 has, for example, a main frame 252 integrated with the oscillating shaft 250, a pair of vertical plates 253 disposed on either side of the main frame 252, and rotating tops 254 rotatably provided on each of the pair of vertical plates 253. As shown in FIG. 7, the outer peripheral surface of the rotating top 254 contacts the inner peripheral surface of the rotating drum 210.

[0051] A plurality of (e.g., two) rotating tops 254 may be provided at positions equidistant from the rotation center line R at the entrance 211 of the rotating drum 210. A plurality of (e.g., two) rotating tops 254 may be provided at positions equidistant from the rotation center line R at the exit 212 of the rotating drum 210. The number of rotating tops 254 is not particularly limited. One rotating top 254 may be provided at each of the entrance 211 and the exit 212.

[0052] The rotating top 254 supports the rotating drum 210 so that it can rotate freely around a rotation center line R. When the motor 230 rotates the rotating drum 210, the rotating top 254 is rotated following the rotation of the rotating drum 210. Compared to when the rotating top 254 is fixed, frictional resistance can be reduced, and the rotational drive force of the motor 230 can be reduced.

[0053] The oscillating frame 251 has a mounting base 255 on which the motor 230 is attached. The mounting base 255 is provided on, for example, the vertical plate 253. The mounting base 255 is provided on the vertical plate 253 facing the inlet 211 out of the pair of vertical plates 253. The mounting base 255 may be provided on the vertical plate 253 facing the outlet 212. The position of the mounting base 255 is selected depending on the position of the motor 230.

[0054] The rocking mechanism 240 may have a driving source 259 (see FIG. 7). The driving source 259 rocks the rocking frame 251 relative to the pair of fixed frames 241, thereby rocking the rotating drum 210 between a state in which the rotation center line R of the rotating drum 210 is horizontal as shown in FIG. 8 and a state in which the rotation center line R of the rotating drum 210 is inclined as shown in FIG. 9.

[0055] The driving source 259 includes, for example, a hydraulic cylinder. As shown in Fig. 7, a pair of hydraulic cylinders are provided on either side of the rotating drum 210. The hydraulic cylinders are attached to the pair of fixed frames 241, respectively, and oscillate the oscillating frame 251 by expanding and contracting. Note that the driving source 259 is not limited to a hydraulic cylinder. For example, the driving source 259 may include a motor that rotates the oscillating shaft 250.

[0056] The separating device 200 may include a control unit 260 that controls the swinging mechanism 240. The control unit 260 is configured, for example, by a computer. The control unit 260 performs control to make the rotation center line R of the rotating drum 210 horizontal when the screen holes 213 selectively allow the glass pieces to pass through while the motor 230 rotates the rotating drum 210. This allows the entire second cut pieces 22 to be evenly immersed in the processing liquid.

[0057] The control unit 260 performs control to make the rotation center line R of the rotating drum 210 inclined when the resin pieces are taken out from inside the rotating drum 210 to the outside. This allows the outlet 212 to be lower than the inlet 211, and the resin pieces can be pulled toward the outlet 212 by their own weight. Therefore, the resin pieces can be easily taken out from the outlet 212. Note that when the second cut pieces 22 are introduced into the rotating drum 210 from the inlet 211, control may be performed to make the rotation center line R of the rotating drum 210 inclined. This allows the gap between the inlet 211 and the treatment tank 220 to be small, so that the second cut pieces 22 can be easily introduced from the inlet 211.

[0058] The control unit 260 does not always tilt the rotation center line R of the rotating drum 210, but makes the rotation center line R of the rotating drum 210 horizontal when separating the resin pieces from the glass pieces. This allows the entire resin piece to be evenly immersed in the processing liquid inside the rotating drum 210, so that the resin piece and the glass piece can be separated from each other over the entire resin piece.

[0059] It is also possible to separate the resin pieces from the glass pieces by always tilting the rotation center line R of the rotating drum 210 and moving the resin pieces by their own weight from the inlet 211 toward the outlet 212. In this case, since the entire resin pieces are not evenly immersed in the treatment liquid, it is difficult to manage the time for separating the resin pieces from the glass pieces.

[0060] Therefore, the control unit 260 of this embodiment does not always tilt the rotation center line R of the rotating drum 210, but makes the rotation center line R of the rotating drum 210 horizontal when separating the resin pieces from the glass pieces. This makes it easier to manage the time to separate the resin pieces from the glass pieces because the entire resin pieces are evenly immersed in the processing liquid, improving workability.

[0061] As shown in FIG. 7, the separation device 200 may include a recovery line 270 and a recovery tank 271. The recovery line 270 sends the glass pieces together with the processing liquid from the bottom of the treatment tank 220 to the outside of the treatment tank 220. The recovery tank 271 separates the glass pieces sent by the recovery line 270 from the processing liquid and collects them. The recovery tank 271 has a filter that separates the glass pieces from the processing liquid. The separation device 200 may further include a return line 272. The return line 272 returns the processing liquid separated from the glass pieces in the recovery tank 271 to the treatment tank 220. This allows the processing liquid to be reused, and the amount of waste processing liquid can be reduced.

[0062] The separation device 200 may further include a branch line 273 and an ejector section 274 connected to the branch line 273. The branch line 273 joins the recovery line 270 midway. The branch line 273 has a first connection pipe 273a extending straight up or diagonally upward (straight up in FIG. 7) toward a joining point 275 of the branch line 273 and the recovery line 270. The recovery line 270 has a second connection pipe 270a extending straight up or diagonally upward (straight up in FIG. 7) continuously from the first connection pipe 273a, and a third connection pipe 270b approaching the first connection pipe 273a as it goes upward. If the first connection pipe 273a, the second connection pipe 270a, and the third connection pipe 270b are connected as described above, the ejector section 274 is likely to form a desired flow.

[0063] The ejector unit 274 draws the processing liquid from the bottom of the processing tank 220 toward the junction 275 by forming a flow of the processing liquid from the branch line 273 toward the collection tank 271 at the junction 275. The drawn processing liquid contains glass pieces, and is swept away from the junction 275 toward the collection tank 271. The ejector unit 274 includes, for example, a pump.

[0064] The ejector unit 274 can pump the processing liquid that does not contain glass fragments. If the branch line 273 and the ejector unit 274 are not present and a pump is provided in the middle of the recovery line 270, the pump may be damaged in the process of sucking in and discharging the processing liquid that contains glass fragments. According to the present embodiment, it is possible to prevent the pump from being damaged by the glass fragments.

[0065] As shown in FIG. 8 and FIG. 9, the separation device 200 may include a circulation line 276, a pump 277, and a temperature regulator 278. The circulation line 276 takes the treatment liquid from inside the treatment tank 220 to outside and returns it to inside the treatment tank 220. By circulating the treatment liquid, the concentration of the surfactant in the treatment liquid can be made uniform. The pump 277 is provided in the middle of the circulation line 276 and pumps the treatment liquid. The temperature regulator 278 adjusts the temperature of the treatment liquid in the middle of the circulation line 276. The temperature regulator 278 includes, for example, an electric heater. The temperature regulator 278 heats the treatment liquid, for example, by supplying water vapor to the treatment liquid. By heating the treatment liquid while circulating it, the temperature of the treatment liquid can be made uniform.

[0066] 8 and 9, the separation apparatus 200 may include a treatment liquid supply unit 279. The treatment liquid supply unit 279 supplies new treatment liquid to the treatment tank 220. In this embodiment, the treatment liquid supply unit 279 supplies the treatment liquid to the treatment tank 220 via a circulation line 276, but the treatment liquid may be supplied directly to the treatment tank 220. Although not shown, the separation apparatus 200 may include a treatment liquid discharge unit. The treatment liquid discharge unit discharges the used treatment liquid from the treatment tank 220 to the outside of the separation apparatus 200.

[0067] Although the laminated glass separation device according to the present disclosure has been described above, the present disclosure is not limited to the above-mentioned embodiments. Various changes, modifications, substitutions, additions, deletions, and combinations are possible within the scope of the claims. These naturally fall within the technical scope of the present disclosure. [Explanation of symbols]

[0068] 10. Laminated Glass 11 First glass plate 12 Interlayer 13 Second Glass Pane 200 Separation equipment 210 Rotating Drum 213 Screen Hole 214 Transmission section 215 Protrusion 220 Treatment tank 221 Slope 230 Motor 240 Swing Mechanism 260 Control Unit 270 Collection Line 271 Collection tank 272 Reflux Line 273 Branch Line 274 Ejector section 275 Junction 276 Circulation Line 278 Temperature regulator R Rotation center line

Claims

1. A device for separating laminated glass having, in this order, a first glass sheet that has been previously crushed, an interlayer film, and a second glass sheet that has been previously crushed, comprising: a rotating drum that houses the laminated glass therein; a treatment tank that surrounds the rotary drum and stores a treatment solution in a lower space inside the rotary drum; A motor that rotates the rotary drum; Equipped with The rotating drum has a screen hole penetrating from the inner peripheral surface to the outer peripheral surface of the rotating drum, The screen holes are smaller than the resin pieces originating from the interlayer film, and allow the glass pieces originating from the first glass sheet and the second glass sheet to selectively pass through.

2. The laminated glass separating device according to claim 1 , wherein a transmission part for transmitting a rotational driving force of the motor to the rotating drum is provided on an outer circumferential surface of the rotating drum.

3. The laminated glass separating device according to claim 1 or 2, wherein a protrusion is provided on an inner circumferential surface of the rotating drum.

4. a swing mechanism that swings the rotating drum between a state in which the rotation center line of the rotating drum is horizontal and a state in which the rotation center line of the rotating drum is inclined; A control unit for controlling the rocking mechanism; Equipped with The control unit is A rotation centerline of the rotating drum is kept horizontal while the motor rotates the rotating drum and the screen holes selectively pass the glass pieces; When the resin pieces are taken out from the inside of the rotating drum to the outside, a rotation center line of the rotating drum is inclined. The laminated glass separating apparatus according to claim 1 or 2,

5. 3. The laminated glass separating apparatus according to claim 1, wherein the bottom of the treatment tank has an inclined surface for collecting the glass pieces by gravity.

6. a recovery line for conveying the glass pieces together with the treatment liquid from the bottom of the treatment tank to the outside of the treatment tank; a recovery tank for recovering the glass pieces sent through the recovery line by separating the glass pieces from the treatment liquid; a reflux line for returning the treatment liquid separated from the glass pieces in the recovery tank to the treatment tank; The laminated glass separating device according to claim 1 or 2, comprising:

7. a recovery line for conveying the glass pieces together with the treatment liquid from the bottom of the treatment tank to the outside of the treatment tank; a recovery tank for recovering the glass pieces sent through the recovery line by separating the glass pieces from the treatment liquid; A branch line that joins the recovery line midway; an ejector section connected to the branch line; Equipped with 3. The laminated glass separating device according to claim 1, wherein the ejector section forms a flow of the treatment liquid from the branch line toward the recovery tank at a junction of the recovery line and the branch line, thereby drawing the treatment liquid from a bottom of the treatment tank toward the junction.

8. a circulation line for taking the treatment solution from the inside of the treatment tank to the outside and returning the treatment solution to the inside of the treatment tank; a temperature regulator that adjusts the temperature of the treatment liquid in the circulation line; The laminated glass separating device according to claim 1 or 2, comprising:

Images