JP4002986B2 - Method and apparatus for separating and recovering window glass of automobile - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for separating and collecting a window glass bonded and fixed to a front window, a rear window or the like of an automobile from a vehicle body.
[0002]
[Prior art]
In recent years, it has been considered that discarded window glass of automobiles is collected and recycled as a useful material. In the past, after abandoned automobiles were dismantled, parts that could be easily removed were first removed and collected, then the car body was pressed with a window glass and crushed and crushed with a shredder. However, collecting the window glass by such a method has a problem in practical use because it is quite difficult to separate the glass from the shredder dust.
[0003]
In order to solve such a problem, Japanese Patent Application Laid-Open No. 6-47595 discloses that the roof portion of an automobile is pressed, the window glass is bent outward from the vehicle body, the window glass is crushed and scattered, and the glass pieces are separated. A method of separating and collecting window glass that is separated and collected from a vehicle body has been proposed. However, even with the technique described in Japanese Patent Laid-Open No. 6-47595, much effort is required to collect the glass pieces scattered around, and a part of the glass is scattered in the automobile and is not completely crushed. There was also a problem that the glass recovery rate was reduced.
[0004]
Japanese Patent Laid-Open No. 2000-24631 discloses that a recovery jig provided with a glass fragment storage part is disposed in the vehicle, and a scattering prevention sheet is coated on the outside of the rear glass, and the rear glass is impacted from the upper surface of the scattering prevention sheet. An automobile rear glass recovery method has been proposed in which a rear glass is recovered in a recovery jig.
[0005]
[Problem to be Solved by the Invention]
However, the technique described in Japanese Patent Laid-Open No. 2000-24631 is also a method of crushing and removing the window glass.
Recently, automotive window glass, especially passenger window glass, is required to be reusable, that is, to be removed while maintaining the quality and shape of the window glass without causing any damage to the window glass. It has become to.
[0006]
Conventionally, as a method of removing the window glass of the automobile in a reusable state, a method including the following steps (1) to (6) has been performed. The case where a windshield is removed as a window glass is demonstrated as an example.
First, (1) remove the outer cosmetic rubber molding of the windshield with a jig,
(2) Remove the lining inside the windshield inside the car body,
(3) After attaching the protective cover to the dashboard,
(4) A cut is made in the rubber interposed between the windshield and the vehicle body from inside and outside the vehicle body, and then a wire is passed through the cut. Next,
(5) An operator has both ends of the penetrated wire, and the rubber is separated from the vehicle body while reciprocating the wire over the entire circumference of the windshield, and the windshield and the vehicle body are separated.
(6) Remove the windshield using a suction cup
That's it.
[0007]
However, in such a windshield removing method, it is not easy to cut rubber with a wire because it is a manual operation, and it takes a long time to work, or the wire touches the windshield and damages the windshield. There are several problems, such as frequent wear and breakage, which requires skill, and that the work space is extremely narrow because it is an in-car work.
[0008]
In order to solve such a problem, JP 2000-6657 A discloses an adhesive layer formed in a closed loop shape on the peripheral edge of the window glass or a wire for cutting the adhesive layer over the entire length in the vicinity thereof, The end of the wire is crossed in the width direction of the adhesive layer and then buried in the dam rubber in advance, and when the window glass is removed, the embedded wire is drawn along the closed loop trajectory in order from the end. A method for separating and collecting automobile window glass has been proposed. According to the technique described in Japanese Patent Laid-Open No. 2000-6657, the window glass can be efficiently recovered in a reusable state.
[0009]
However, the technique described in Japanese Patent Application Laid-Open No. 2000-6657 requires a special process of arranging a wire for cutting the adhesive layer on the peripheral edge of the window glass when a new automobile is assembled. In order to cut the layer, it is necessary to dispose the end portion of the wire in the width direction of the adhesive layer, and there is a problem that the wire hinders the adhesion between the window glass and the vehicle body. In addition, since the wire is disposed at the peripheral edge of the window glass, there is a risk that the wire is exposed to a long period of time in a corrosive environment and the strength deteriorates, and there is a possibility that the wire may not function effectively at the time of removal.
[0010]
In addition, since there are a wide variety of automobiles and there are a wide variety of methods for bonding and fixing the window glass and the vehicle body, it is extremely difficult for automobile dismantling companies, general glass companies, etc. to find the wire terminal portion instantly.
The present invention solves such a problem of the prior art, and removes the window glass from the vehicle body in a reusable state regardless of the type of vehicle and without requiring a special process when assembling the vehicle. However, it is an object of the present invention to propose an automobile window glass separation and recovery method and an automobile window glass separation and recovery apparatus which are easier and shorter than conventional methods.
[0011]
[Means for Solving the Problems]
In order to achieve the above-described problems, the present inventors diligently studied means for separating the window glass from the vehicle body. As a result, the inventors focused on the fact that automobile window glasses such as automobile windshields and rear glasses are usually bonded and fixed to the vehicle body via rubber, and the vehicle body (metal) and rubber (organic polymer) I have come up with the idea of separating the window glass and the vehicle body by using the difference in shrinkage between the metal and the organic polymer compound.
[0012]
First, the experimental results on which the present invention is based will be described.
As shown in FIG. 4A, a part of the vehicle body (front pillar 21) was cut out with the windshield 1 from the automobile 10 to be discarded. Next, as shown in FIG. 4B, the cut-out vehicle body portion 21 of the vehicle body with the windshield was immersed in liquid nitrogen. After soaking, it peels off at the joint between the rubber and the car body with a peeling sound in a short time (11 min) (Fig. 4 (c)), and the windshield and the car body (part of the car body) are easily separated in a short time. I found out that I can do it. Also, instead of immersing the car body in liquid nitrogen, the windshield and car body (part of the car body) can be separated easily and in a short time by flowing liquid nitrogen directly into the cavity of the car body. I found out.
[0013]
The present invention has been completed based on the above findings and further studies.
That is, the first aspect of the present invention is a method for separating and recovering a window glass of an automobile from a vehicle body, and cools at least the vicinity of the junction between the window glass and the vehicle body to a temperature below the temperature at which the window glass and the vehicle body separate. In the first aspect of the present invention, the cooling is arranged in the vicinity of the joint with a metal tube supplied with a low-temperature refrigerant. In the first aspect of the present invention, the metal tube is preferably disposed via a heat conductive compound. In the first aspect of the present invention, the low-temperature refrigerant is , Liquid nitrogen, liquid oxygen, or liquid argon is preferable.
[0014]
The second aspect of the present invention is an automotive window glass separating apparatus for separating an automotive window glass from a vehicle body, wherein the cooling means is capable of rapidly cooling at least the vicinity of the joint between the window glass and the vehicle body, and the cooling means. A window glass separation device for an automobile, comprising: a refrigerant supply unit that supplies a low-temperature refrigerant to the vehicle; and a refrigerant collection unit that collects a used low-temperature refrigerant. In a second aspect of the present invention, Preferably, the cooling means is a metal tube that is capable of supplying a low-temperature refrigerant therein and processed into a shape along the joint. In the second aspect of the present invention, the refrigerant supply means is a refrigerant holding unit. A container, a refrigerant supply amount adjusting means capable of continuously or intermittently supplying a predetermined amount of low-temperature refrigerant from the refrigerant holding container, and a pipe for feeding the low-temperature refrigerant to the cooling means. Door is preferable.
[0015]
In addition, the third aspect of the present invention is an automobile window glass separation and recovery device provided with a recovery means for recovering the window glass separated from the vehicle body, in addition to the window glass separation device of each automobile of the second aspect of the invention described above. It is.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
A window glass 1 such as a windshield and a rear glass of an automobile is bonded and fixed to the vehicle body 2 via a rubber layer 3 at the periphery. An example of a windshield is shown in FIG. Further, a cosmetic rubber molding 31 is usually provided along the periphery of the window glass (front glass) at the outer boundary between the window glass (front glass) 1 and the vehicle body 2, and the peripheral edge of the window glass (front glass) is provided. It has a concealing structure. Reference numeral 22 denotes an interior material.
[0017]
First, a method for separating and collecting automobile window glass, which is the first aspect of the present invention, will be described with reference to FIG. The automobile window glass separation and recovery method of the present invention includes a step of cooling at least the vicinity of the joint between the window glass and the vehicle body to a temperature equal to or lower than room temperature and below a temperature at which the window glass and the vehicle body are separated.
In the present invention, first, the decorative rubber molding 31 on the outside of the vehicle body is removed using a rubber molding removing jig. Then, at least the vicinity of the joint between the window glass and the vehicle body is cooled to a room temperature or lower, which is equal to or lower than a predetermined temperature at which the window glass and the vehicle body are separated. Note that the joint between the window glass and the vehicle body refers to the vehicle body 23 in the region where the periphery of the window glass is bonded and fixed (also referred to as a region near the periphery of the window glass, in the dotted circle in FIG. 1B) and / Or means the rubber layer 3. Moreover, in this invention, the area | region cooled to below predetermined | prescribed temperature is not limited only to this area | region (area | region near the peripheral part of a window glass), and it may say that it may cool to the outer area | region further. Not too long. In short, in the present invention, the junction between the window glass and the vehicle body only needs to be cooled to a temperature below the separation temperature.
[0018]
The “temperature at which the window glass and the vehicle body are separated” as used in the present invention means the temperature at which the adhesive interface between the vehicle body 23 and the rubber layer 3 is peeled off due to the shear stress generated by cooling, and the used material, The temperature varies appropriately depending on the structure.
In the present invention, the cooling method is not particularly limited, but a method of rapidly cooling by supplying a low-temperature refrigerant such as liquid nitrogen, liquid oxygen, liquid argon, liquid helium or the like directly to the vehicle body or the rubber layer or a means for cooling the low-temperature refrigerant. Any cooling method can be applied. In the method of supplying the low-temperature refrigerant directly to the object to be cooled, the consumption of the low-temperature refrigerant is large in a large automobile, which is practically economically disadvantageous. In consideration of cooling efficiency, a method using a low-temperature refrigerant indirectly is preferable. As a method of indirectly using a low-temperature refrigerant, a metal tube is arranged as a cooling means in the vicinity of the joint between the window glass and the vehicle body, and a low-temperature refrigerant such as liquid nitrogen, liquid oxygen, liquid argon, or liquid helium is placed inside. The method of supplying and cooling is also preferable from the viewpoint of cooling efficiency and the economical recovery of the refrigerant.
[0019]
The metal tube 7 which is a cooling means is processed into a shape along the peripheral edge of the window glass as shown in FIG. 1 (a), and along the peripheral edge of the window glass as shown in FIG. 1 (b). It is preferable that the rubber layer 3 and the rubber layer constituting the joining portion are disposed so as to be in contact with the bonded vehicle body 23. The cooling means may be disposed only on the vehicle body 23 to which the rubber layer is bonded. However, it is more efficient to cool both the rubber layer and the vehicle body at the same time because the operation is shorter.
[0020]
In addition, the metal pipe 7 serving as a cooling means is preferably processed in advance into a shape corresponding to the type of automobile to be applied, but may be divided and connected so that an arbitrary shape can be formed. The metal tube 7 can be appropriately selected according to the shape of the part to be cooled, such as a circular tube or a square tube. Needless to say, the metal pipe 7 serving as a cooling means is secured by an appropriate method such as tape fastening or slight pressing so that the metal pipe is not separated from the cooled portion during cooling.
[0021]
Moreover, in this invention, in order to improve a cooling effect, it is preferable to arrange | position and cool the metal tube 7 which is a cooling means via a heat conductive compound. By interposing a compound with excellent thermal conductivity between the cooling means and the body or rubber layer that is the part to be cooled, the thermal contact between the two becomes good, the cooling effect is greatly improved, and in a short time Separation is completed, resulting in an improvement in work efficiency. The heat conductive compound is more preferably a material rich in viscosity and plasticity from the viewpoint of moldability. As such a heat conductive compound, a thermally stable addition-polymerized vinyl polymer or the like is used as a matrix, and a metal powder such as copper or true casting subjected to corrosion resistance treatment is sufficiently kneaded as a filler. Recommended. Further, a heat conductive cement may be used. These compounds can be recovered and reused after the window glass is separated from the vehicle body and then waiting for the temperature to reach room temperature. Thus, the compound can be recovered at a high recovery rate, and the resources can be effectively used without polluting the environment.
[0022]
A low temperature refrigerant such as liquid nitrogen, liquid oxygen, liquid argon or the like is supplied to the cooling means (metal tube) arranged in this manner, and the rubber layer 3 constituting the joint between the window glass and the vehicle body, which is a part to be cooled. And / or the vehicle body 23 to which the rubber layer is bonded is rapidly cooled to a predetermined temperature or lower, which is a temperature at which the window glass and the vehicle body are separated, preferably at a cooling rate of 5 ° C./min or higher. When cooled to a predetermined temperature or less by such rapid cooling, a shearing force is generated at the bonding interface between the vehicle body and the rubber due to the difference in shrinkage between the metal vehicle body and the organic polymer compound rubber. The adhesive surface of the vehicle body and the rubber peels off, and the window glass can be separated from the vehicle body. Therefore, it is important for the cooling in the present invention to perform rapid cooling so that the difference in shrinkage between the metal vehicle body and the organic polymer compound rubber is large. As such a rapid cooling method, a method of supplying liquid nitrogen to a metal tube and simultaneously quenching the vehicle body and the rubber layer in the vicinity of the peripheral portion of the window glass in contact with the metal tube is preferable.
[0023]
In the present invention, it is not necessary to simultaneously cool the entire periphery of the peripheral edge of the window glass. Dividing the area to be cooled into multiple parts and sequentially cooling it, and dividing / separating so that the area to be cooled is at least half of the entire window glass circumference, it is easier and faster than before. Window glass can be separated.
After the window glass is separated from the vehicle body by the cooling described above, the window glass is preferably pulled in the horizontal direction or obliquely upward by a collecting means using a separating jig such as a rubber sucker, and is removed from the vehicle body. It is preferable to separate and collect.
[0024]
Next, an automotive window glass separating apparatus according to the second aspect of the present invention will be described.
The window glass separating apparatus of the present invention includes a cooling means 7, a refrigerant supply means 8 for supplying a low-temperature refrigerant to the cooling means 7, and a refrigerant recovery means 9 for recovering the used low-temperature refrigerant.
[0025]
The cooling means 7 is not particularly limited as long as it can directly or indirectly quench the joint between the window glass and the vehicle body in the vicinity of the peripheral edge of the window glass 1, but has excellent thermal conductivity and is near the joint. Is preferably a metal tube that can be rapidly cooled. A metal tube is disposed in the vicinity of the joint between the window glass and the vehicle body, a low-temperature refrigerant is supplied inside the metal tube, and a member constituting the joint between the window glass and the vehicle body in the vicinity of the peripheral portion of the window glass is cooled. It is preferable. Moreover, it is preferable that the metal pipe 7 which is a cooling means is a metal pipe processed in advance into a shape along the peripheral edge of the window glass in accordance with the type of automobile to be applied. Further, the metal tube may be divided and connected so that an arbitrary shape can be formed.
[0026]
Furthermore, as shown in FIG. 1A, the metal tube 7 as a cooling means may have a shape in which the entire periphery of the peripheral portion of the window glass 1 is covered with one metal tube 7, and FIG. As shown in FIG. 2, the peripheral edge of the window glass 1 may be divided and covered with a plurality of metal tubes 7a and 7b. Furthermore, it is good also as a form divided | segmented and isolate | separated so that the area | region to cool may become 1/2 or more of a window glass perimeter.
[0027]
The material of the metal tube is preferably a copper tube, an aluminum tube, or the like with high thermal conductivity. In the present invention, the metal tube can be appropriately selected according to the shape of the cooled part such as a circular tube or a square tube. In particular, it may be more preferable from the viewpoint of heat transfer to use a square tube with a triangular cross-section having a shape close to that of a cosmetic rubber molding to be peeled off before work.
[0028]
The refrigerant supply unit 8 includes a refrigerant holding container 81, a refrigerant supply amount adjustment unit 81a, and a pipe 82.
The refrigerant holding container 81 may be any container that can hold a cryogenic refrigerant such as liquid nitrogen, and a thermos having a heat insulating structure, a jar, and the like are all suitable.
The container for holding the cryogenic refrigerant such as liquid nitrogen is preferably a metal container such as a thermos with a high vacuum heat insulating structure such as stainless steel. In addition, these containers preferably have a structure that can narrow the inlet / outlet of a refrigerant such as liquid nitrogen, reduce the evaporation of the refrigerant, and prevent the entry of atmospheric composition gas (containing water vapor, carbon dioxide gas, etc.) from the inlet / outlet. . If the entry of atmospheric composition gas (water vapor, carbon dioxide, etc.) is allowed, the air composition gas that has entered freezes and closes the entrance because of the low temperature of the inlet, which causes evaporation of liquid nitrogen contained in the container This is because the internal pressure gradually increases and the container often explodes.
[0029]
In addition, the holding container such as liquid nitrogen used in the present invention has the above-described one thin inlet / outlet, and may be an open type holding container (a thermos bottle) that is open to the atmosphere and is not subjected to pressure, or the inlet / outlet is separated. Any sealed holding container that is hermetically sealed and under pressure is suitable. Some sealed holding containers have an internal pressure adjusting mechanism and can control the supply amount of the cryogenic refrigerant by changing the internal pressure.
[0030]
The refrigerant supply amount adjusting means 81a is not particularly limited as long as it can supply a predetermined amount of cryogenic refrigerant such as liquid nitrogen from the refrigerant holding container continuously or intermittently.
The refrigerant supply amount adjusting means 81a is preferably one that can adjust the flow rate by combining a pump applicable to a cryogenic refrigerant, a pressure gauge, and an internal pressure control device.
[0031]
In the case where the holding container is an open type, it is preferable that a pump is attached to the inlet / outlet for sealing, and the internal pressure is adjusted by an internal pressure control device such as a dropper bulb or a gas circulation evaporator to push out and supply the refrigerant.
Further, some sealed holding containers have an internal pressure adjusting mechanism, and there is no problem even if this is used as a refrigerant supply amount adjusting means.
[0032]
The pipe 82 is not particularly limited as long as it can send the cryogenic refrigerant to the cooling means 7, but is preferably a metal pipe that has a heat insulating material around and can reduce consumption of the cryogenic refrigerant. . When the metal pipe 7 as the cooling means is divided into 7a and 7b as shown in FIG. 2, as shown in FIG. 2 (b), the pipe 82 terminal to the cooling means 7 is branched to the branch end. It is preferable to arrange flow rate adjusting means 83a and 83b such as cocks.
[0033]
The refrigerant recovery means 9 includes a recovery pipe 92 and a refrigerant recovery container 91.
The recovery pipe 92 is not particularly limited as long as it is capable of recovering the cryogenic refrigerant from the cooling means 7 and making it reusable, as long as it can be sent to the refrigerant recovery container 91 for primary storage. However, it is preferable to use a metal tube that can reduce the consumption of the cryogenic refrigerant.
[0034]
Similarly to the refrigerant holding container 81, the refrigerant recovery container 91 may be any container that can hold a cryogenic refrigerant such as liquid nitrogen, and a heat-insulated thermos, jar, or the like is preferable. In order to reduce consumption, it is preferable to use a container exclusively for collection. According to a third aspect of the present invention, there is provided a window glass separation / recovery device for automobiles, which is provided with a recovery means for recovering the window glass separated from the vehicle body, in addition to the window glass separation device for each automobile according to the second aspect of the invention described above. It is.
[0035]
The collection means 6 is not particularly limited as long as it has a structure that allows the window glass 1 to be separated from the vehicle body so as not to be damaged or broken, and is not particularly limited, but has a separation jig 61. The window glass 1 is preferably provided as a device that can be separated and held so as not to be damaged or broken from the vehicle body. The separating jig 61 preferably has a rubber suction cup that can be adsorbed to the window glass from the outside of the vehicle body and can apply a separating force to the window glass.
[0036]
The separating jig 61 may be of a type that uses one rubber suction cup and is adsorbed to the window glass. From the viewpoint of safety, the one-point / three-point fixing system shown in FIG. 6 or the one shown in FIG. It is preferable to adopt a two-point four-point fixing method.
In the one-point / three-point fixing method shown in FIG. 6, a rubber sucker 61a is arranged in the center of a column 61c whose length can be adjusted, and rubber suckers 61b and 61b are arranged at both ends, respectively, and the rubber sucker 61a is collected in advance. The window glass 1 is fixed, the other is fixed to the vehicle body 2, the joint is cooled, and the window glass and the vehicle body are separated. After separation, the rubber suction cups 61b, 61b fixed to the vehicle body 2 are released, and the window glass can be recovered using a separating device (not shown), a holding device, or the like.
[0037]
In the two-point four-point fixing method shown in FIG. 7, rubber suckers 61a, 61a, 61b, 61b are respectively arranged at the ends of the support 61d configured in an H shape, and two rubber suckers 61a are attached to the window glass. The rubber suckers 61b, 61b are fixed to the vehicle body 2 and cooled to separate the vehicle body. After the separation, the rubber sucker 61b fixed to the vehicle body 2 is released and the window glass is collected.
[0038]
Further, as a device that allows the window glass 1 to be separated and held from the vehicle body so as not to be damaged or broken, any conventionally known device is suitable. For example, as shown in FIG. It is preferable to use a separating device 62 such as a spring that is connected to the vehicle body and separates the window glass 1 from the vehicle body, and a holding device 63 such as a crane that holds the separated window glass 1. In addition, it cannot be overemphasized that the collection | recovery means in this invention is not limited to the example shown by FIG.3, FIG.6, FIG.7.
[0039]
【Example】
Example 1
The windshield was separated and recovered from a vehicle with a displacement of 2500 cc (vehicle for dismantling) using the window glass separator shown in FIG.
First, the cosmetic rubber molding applied to the periphery of the windshield was peeled off with a jig. Next, a plastic thermal conductive compound (true cast powder kneaded vinyl compound) is applied to the boundary (vehicle body and rubber layer) between the windshield and the car body after peeling off the cosmetic rubber molding to a width of 15 mm. It was crowded. Then, a copper tube (10 mmφ) formed in a shape along the peripheral edge of the windshield was installed as a cooling means 7 on the coated thermal conductive compound 4. Liquid oxygen was supplied as a cryogenic refrigerant from the refrigerant supply means 8 into the copper tube, and the boundary between the windshield and the vehicle body was cooled to room temperature or lower. As a result, when the liquid oxygen was supplied for 9 minutes and cooled, the bonded surface of the rubber layer and the vehicle body separated together with the separated sound, and the window glass (front glass) and the vehicle body separated. In this way, the separation between the window glass and the vehicle body was completed in 9 minutes.
[0040]
After separation, two rubber suction cups (diameter 120mm) that have been previously installed in the center of the windshield as a separating tool for the recovery means are pulled diagonally with a spring, and the windshield is pulled away from the vehicle body. Of course, the damage was recovered without any damage. The cryogenic refrigerant (liquid oxygen) used was recovered by the refrigerant recovery means 9 and reused. In addition, the compound was recovered and reused after it had reached room temperature.
[0041]
On the other hand, in the same type of automobile, a wire is inserted through the rubber layer between the windshield and the car body, and the wire is manually reciprocated to cut the rubber layer to separate the windshield. As an example. In this conventional example, it took about 1.5 hours to separate the windshield.
Thus, in the method of the present invention (example of the present invention) using the apparatus of the present invention, the windshield can be separated and collected in a reusable manner in a shorter time and without any damage than the conventional example. .
(Example 2)
The windshield was separated and recovered from a 4000 cc automobile (new car) using the window glass separator shown in FIG.
[0042]
First, from the outside of the vehicle body, the cosmetic rubber molding applied to the periphery of the windshield was peeled off with a jig. Next, a plastic thermal conductive compound (thermal conductive cement) was applied to the boundary portion (vehicle body and rubber layer) between the windshield and the vehicle body, to which the cosmetic rubber molding was peeled off, so as to have a width of 20 mm. Then, on the coated thermal conductive cement 4, two copper tubes (15mmφ) formed in an L shape along the periphery of the windshield were installed as cooling means 7a and 7b. . At the same time, liquid nitrogen was supplied as a cryogenic refrigerant from the refrigerant supply means 8 through the pipes 82 branched into the respective copper pipes, and the joint between the windshield and the vehicle body was cooled to room temperature or lower. As a result, when the liquid nitrogen was supplied for 11 minutes and cooled, the adhesive surface between the rubber layer and the vehicle body separated along with the separation sound, and the window glass (front glass) and the vehicle body separated.
[0043]
After separation, use the separation jig shown in Fig. 7 (two-point, four-position fixing method) as the separation tool for the recovery means, and pull the windshield away from the vehicle body. It was collected. Note that a rubber sucker with a diameter of 150 mm was used in the separation jig used (fixed at 2 points and 4 locations).
For another automobile of the same type, the flow rate adjusting means 83a was opened, 83b was closed, and liquid nitrogen was supplied to only one of the copper pipes (cooling means 7a) of the cooling means for 11 minutes. Then, conversely, the flow rate adjusting means 83a was closed, 83b was opened, and liquid nitrogen was supplied to only one of the copper tubes of the cooling means (cooling means 7b) for 11 minutes. The same method was used except for the supply method of liquid nitrogen. Also by such a method, the window glass (front glass) and the vehicle body could be easily separated as described above.
[0044]
For another automobile of the same type, liquid nitrogen was started to be supplied to one of the copper tubes (cooling means 7a) and then supplied to the other 5 minutes later for a total of 13 minutes. The same method was used except for the supply method of liquid nitrogen. Also by such a method, the window glass (front glass) and the vehicle body could be easily separated as described above.
(Example 3)
The windshield was separated and collected from a 560 cc automobile (vehicle for dismantling) in the same manner as in Example 1 using the window glass separating apparatus shown in FIG.
[0045]
First, the cosmetic rubber molding applied to the periphery of the windshield was peeled off with a jig. Next, as a cooling means 7, a copper square tube (cross-sectional triangle: one side length of 10 mm) formed in a shape along the periphery of the windshield is brought into contact with the boundary between the windshield and the vehicle body (vehicle body and rubber layer). Installed. In consideration of heat conduction efficiency, the corners of the copper square tubes were arranged so as to match the positions of the recesses where the cosmetic rubber molding was peeled off.
[0046]
Next, liquid argon was supplied as a cryogenic refrigerant from the refrigerant supply means 8 into the copper tube, and the bonded portion between the windshield and the vehicle body was cooled to room temperature or lower. As a result, when the liquid argon was supplied for 9 minutes and cooled, the window glass (front glass) and the vehicle body separated.
After separation, the separation jig shown in FIG. 6 (one-point, three-position fixing method) was used as a separation jig for the collection means, and the windshield was separated from the vehicle body, and collected without damage or damage at one place. The separation jig used was a rubber sucker with a diameter of 100 mm.
[0047]
【The invention's effect】
According to the present invention, the window glass of an automobile can be separated easily and in a short time while maintaining its reusable shape and quality without causing any damage, and adheres and remains on the peripheral edge of the glass. If rubber or the like is removed, it can be reused as a new window glass, the resources can be used effectively, and the industrial effect is remarkable. In addition, the window glass can be separated in a short time, and the field work can be remarkably improved in efficiency.
[Brief description of the drawings]
FIG. 1A is an explanatory view schematically showing a state in which a window glass separating apparatus as an example of the present invention is mounted on a windshield of an automobile. (B) is sectional explanatory drawing which shows an example of the arrangement | positioning state of the cooling means in the junction part vicinity of a window glass and a vehicle body.
FIG. 2 (a) is an explanatory view schematically showing a state in which a window glass separating apparatus as another example of the present invention is mounted on a windshield of an automobile. (B) is explanatory drawing which shows typically an example of the branched piping.
FIG. 3 is a schematic explanatory view showing an example of a recovery unit suitable for the present invention.
FIG. 4 is an explanatory diagram for explaining a situation of an experiment on which the present invention is based.
FIG. 5 is a schematic view showing an example of a structure in a peripheral portion of a windshield of an automobile.
FIG. 6 is a schematic view showing an example of a separating jig suitable for the present invention.
FIG. 7 is a schematic view showing an example of a separating jig suitable for the present invention.
[Explanation of symbols]
1 Windshield (window glass)
2 body
21 Front pillar
22 Interior materials
23 Vehicle body in the area near the edge of the window glass
3 Rubber layer
31 Rubber mall for makeup
4 Compound
5 Low-temperature refrigerant (liquid nitrogen)
6 collection means
61 Separation jig (Rubber sucker)
61a, 61b Rubber sucker
61c, 61d prop
62 Separation device
63 Holding device
7, 7a, 7b Metal pipe (cooling means)
8 Refrigerant supply means
81 Refrigerant holding container
81a Refrigerant supply amount adjustment means
82 Piping (Supply piping)
83a, 83b Flow rate adjusting means (cock)
9 Refrigerant recovery means
91 Refrigerant collection container
92 Piping (recovery piping)
10 cars

Claims (8)

A method for separating and recovering a window glass of an automobile from a vehicle body, comprising a step of cooling at least the vicinity of a joint portion between the window glass and the vehicle body to a temperature lower than a temperature at which the window glass and the vehicle body are separated. Automobile window glass separation and recovery method. The automobile window glass separation and recovery method according to claim 1, wherein the cooling is performed by arranging a metal tube supplied with a low-temperature refrigerant in the vicinity of the joint. The method for separating and collecting automobile window glass according to claim 2, wherein the metal tube is disposed through a thermally conductive compound. 4. The automobile window glass separation and recovery method according to claim 2, wherein the low-temperature refrigerant is one of liquid nitrogen, liquid oxygen, and liquid argon. An automotive window glass separating apparatus for separating a window glass of an automobile from a vehicle body, a cooling means capable of rapidly cooling at least the vicinity of a joint between the window glass and the vehicle body, and a refrigerant supply means for supplying a low-temperature refrigerant to the cooling means And a refrigerant recovery means for recovering the used low-temperature refrigerant. 6. The automobile window glass separating apparatus according to claim 5, wherein the cooling means is a metal tube that is capable of supplying a low-temperature refrigerant therein and is processed into a shape along the joint. The refrigerant supply means, a refrigerant holding container, a refrigerant supply amount adjusting means capable of continuously or intermittently supplying a predetermined amount of low-temperature refrigerant from the refrigerant holding container, and a pipe for feeding the low-temperature refrigerant to the cooling means; The window glass separating apparatus for an automobile according to claim 5 or 6, characterized by comprising: 8. A window glass separating and collecting apparatus for an automobile, comprising the window glass separating apparatus for an automobile according to claim 5 and further comprising a collecting means for collecting the window glass separated from the vehicle body.

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