JPH11320138A - Glass non-destructive removal method and device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass non-destructive removal method and a device by which a glass being fixed on a fixing article with a sealing member can be removed in a non-destructive condition. SOLUTION: A fixed portion 17 of a glass 7, where the glass is fixed on a fixing article 6 with a sealing member, is irradiated from the glass 7 side by a laser light L transmitting through the glass 7 with the usage of a laser generation device 2, while controlling an irradiation point with a laser light irradiation position control mechanism 8. After that, the glass 7 being fixed to the fixing article 6 by the sealing member is removed under a non-destructive condition, using a glass moving mechanism 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-destructive glass removing method and a non-destructive glass removing apparatus, and more particularly to a method of removing glass fixed to an object to be fixed, such as a windshield and a rear glass of an automobile, in a non-destructive state. The present invention relates to a glass non-destructive removing method and a glass non-destructive removing apparatus.

[0002]

2. Description of the Related Art In recent years, reuse of various products has been actively studied due to an increase in awareness of resource conservation and environmental issues. As a part of the reuse of such various products, reuse of glass, for example, window glass used for automobiles and trains, etc., is being studied.

[0003]

However, the above-mentioned conventional glass, for example, a window glass of an automobile, particularly a windshield or a rear glass, is firmly fixed to a window frame as an object to be fixed by a bonding member such as an adhesive. Therefore, removing the glass without breaking it has a problem that a great deal of labor and time are required even if the economic burden is ignored. Therefore, at present, glass such as window glass is crushed into dust without being reused.

[0004] Therefore, a glass non-destructive removal method and a glass non-destructive removal apparatus capable of removing the glass fixed to the object by the joining member in a non-destructive state are desired.

The present invention has been made in view of the above points, and provides a glass non-destructive removing method and a glass non-destructive removing apparatus capable of removing a glass fixed to an object to be fixed by a joining member in a non-destructive state. The purpose is to provide.

[0006]

The non-destructive glass removing method of the present invention according to the first aspect of the present invention for achieving the above object is characterized in that the glass fixed to an object to be fixed by a joining member. Is irradiated from the glass side to a laser beam transmitted through the glass, so that the glass fixed to the object can be removed in a non-destructive state. By adopting such a configuration, the laser beam is bonded by pressing an interlayer such as polyvinyl butyral between two sheets of glass such as a windshield of an automobile in a sandwich manner. Even with glass, the glass can be removed from the object without damaging the glass.

[0007] The method for non-destructively removing glass according to the present invention described in claim 2 of the present invention is characterized in that, in claim 1, the laser beam is converted into a beam diameter corresponding to the size of the fixing portion. Irradiation from the side. To make the laser beam a beam diameter according to the size of the fixing portion here means, for example, a windshield of an automobile,
An adhesive layer as a bonding member provided on a glass-facing surface of an elastic member formed of a rubber-like elastic material called a sealer fixed to a window frame as an object to which the windshield is fixed. Means that the width in the direction orthogonal to the longitudinal direction of the elastic member is substantially equal to the width of the fixed portion formed by the boundary portion with the boundary. Specifically, this is achieved by maintaining the distance between the back surface of the windshield and the center of the lens of the emission unit that emits laser light facing the windshield at a predetermined value. By employing such a configuration, the glass can be removed from the object without damaging the glass by irradiating the fixing part with laser light.

Further, a feature of the glass non-destructive removing method according to the present invention described in claim 3 is that in claim 1 or claim 2, the laser beam is a YAG laser beam. By adopting such a configuration, the YAG laser beam can pass through the glass more reliably, and the glass can be removed from the object without damaging the glass.

A non-destructive glass removing apparatus according to the present invention described in claim 4 is characterized in that a laser generator capable of irradiating a laser beam transmitted through glass, and a laser generator irradiating the laser generator. A laser beam irradiation position control mechanism capable of controlling the irradiation position of the laser beam, and a glass moving mechanism capable of holding and moving the glass fixed to the object by the bonding member. By operating the non-destructive glass removing apparatus according to the present invention according to claim 4 having such a configuration in accordance with the non-destructive glass removing method according to claim 1 of the present invention,
Laser light transmitted through glass can be easily generated. Further, the laser light irradiation position control mechanism can easily and appropriately irradiate the laser light transmitted through the glass to the fixing portion of the glass fixed to the object by the bonding member. Furthermore, the glass moving mechanism can easily and reliably remove (separate) the glass from the object after the irradiation of the laser beam is completed. Therefore, the glass can be easily and reliably removed from the object without damaging the glass, and automation can be easily achieved.

[0010] The non-destructive glass removing apparatus of the present invention according to claim 5 of the present invention is characterized in that, in claim 4, the laser light irradiation position control mechanism is arranged so that the laser light emitting position and the fixing position are fixed. The point is that it is formed so as to be able to hold the space with the part at a predetermined space. By operating the non-destructive glass removing apparatus according to the present invention having the above configuration according to the fifth aspect of the present invention in accordance with the non-destructive glass removing method according to the second aspect of the present invention, a laser beam irradiation position control mechanism is provided. The laser beam transmitted through the glass can be easily and appropriately irradiated to the fixing portion of the glass fixed to the object by the bonding member, and the laser beam has a beam diameter according to the size of the fixing portion, for example, A windshield of an automobile, and an elastic member formed of a rubber-like elastic body called a sealer or the like fixed to a window frame as an object to which the windshield is fixed. Among the fixed parts formed by the boundary part with the adhesive layer as the joining member, the beam diameter is maintained to be substantially equal to the width in the direction orthogonal to the longitudinal direction of the elastic member. The laser beam can be easily and more appropriately applied to the fixing portion of the glass fixed to the object by the bonding member, and the laser beam can be irradiated to the fixing portion. By making one round along the longitudinal direction of the elastic member, the glass can be removed from the object without damaging the glass, and as a result, the working time can be easily reduced.

The non-destructive glass removing apparatus according to the present invention described in claim 6 is characterized in that, in claim 4 or claim 5, the laser generator is capable of generating a YAG laser beam. It is a laser generator. By operating the non-destructive glass removing apparatus of the present invention having the above configuration according to the sixth aspect of the present invention in accordance with the non-destructive glass removing method of the third aspect of the present invention, the YAG laser light is emitted from the glass. Is more reliably transmitted, so that the glass can be more easily and reliably removed from the object without damaging the glass, and automation can be more easily achieved.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a schematic view showing an example of an embodiment of a glass non-destructive removing apparatus using the glass non-destructive removing method according to the present invention.

A non-destructive glass removing apparatus using the glass non-destructive removing method of the present embodiment is used for removing a windshield, which is a window glass of an automobile, as a glass. The glass is transmitted from the surface side of the glass and is irradiated to the portion of the glass fixed by the joining member to the window frame as the object to be fixed.

As shown in FIG. 1, a non-destructive glass removing apparatus 1 according to the present embodiment has a laser generator 2.
The laser beam L output from the laser generator 2 is guided through an optical fiber 3 to an emission unit 5 having one or more lenses 4 and a window frame 6 as an object to be fixed.
Irradiation can be performed toward the surface of the windshield 7 which is glass fixed to the glass. Also, the emission unit 5
Is supported by a suitable laser irradiation position control mechanism 8 such as a robot capable of controlling the irradiation position of the laser light L, and is movable along the periphery of the windshield 7 at a predetermined speed. Since the thickness of the glass 7 is generally substantially uniform, the work distance, more specifically, the surface of the windshield 7 and the lens 4 of the emission unit 5 that irradiates the laser beam L facing the windshield 7 are used. By keeping the distance from the center at a predetermined value, the rear surface of the windshield 7 and the windshield 7
Is controlled so as to maintain a predetermined distance between the center of the lens 4 of the emission unit 5 that emits the laser light L facing the laser light L, and the emission position of the laser light L and the fixing portion 1 described later.
7 can be maintained at a predetermined interval, and as a result, the laser beam L can have a beam diameter corresponding to the size of a fixing portion 17 described later. Further, a detachable suction plate 10 forming a part of the glass moving mechanism 9 is disposed on the windshield 7 so that the windshield 7 can be moved while holding the windshield 7 removed from the window frame 6. It has become.

The laser generator 2 of this embodiment includes:
YAG laser light having a wavelength of about 1.064 μm capable of generating laser light L transmitted through glass is used. In addition, as the laser generator 2, from among those capable of generating laser light L transmitting through glass, the type of glass, the state of fixation between the glass and the object,
It can be selected according to the design concept and other needs.

Here, the fixed state of the windshield and the window frame of the present embodiment will be described in detail.

FIG. 2 is a schematic view showing a state in which a windshield as a glass to which a method for non-destructively removing glass according to the present invention is applied and a window frame as an object to be fixed.

As shown in FIG. 2, a windshield 7 called a laminated glass has a film-like thickness of about 0.76 mm formed of polyvinyl butyral or the like between two glasses 7A and 7B. Is formed by sandwiching and pressing the intermediate film 12 in a sandwich shape. The windshield 7 is fixed to the window frame 6 via an elastic member 15 formed of a rubber-like elastic body called a sealer or the like. To elaborate further,
A ceramic printed portion 7a of black or the like is provided on a surface of the windshield 7 facing the window frame 6, and the ceramic printed portion 7a is provided on a glass facing surface 15a of the elastic member 15 facing the windshield 7. It is fixed to the elastic member 15 by an adhesive layer 16 formed of a urethane-based adhesive or the like as a joining member. A boundary portion between the ceramic print portion 7a and the adhesive layer 16 is a fixing portion 17.

An adhesive layer 20 for fixing the elastic member 15 to the window frame 6 is provided on the window frame facing surface 15b of the elastic member 15 facing the window frame 6.

The beam diameter of the laser beam L is preferably substantially equal to the width of the fixing portion 17 in the direction perpendicular to the longitudinal direction of the elastic member 15.

Next, the operation of the present embodiment having the above-described configuration will be described.

FIG. 3 is a schematic view showing a laser beam irradiation state by a glass non-destructive removing apparatus using the glass non-destructive removing method according to the present invention.

Using the glass non-destructive removal apparatus 1 of this embodiment, the output of the laser beam L is set to 270 W and the oscillation pulse of the laser beam L is set to 90 pps. As shown in FIG. The focal point of L is formed on the front surface of the windshield 7 on the near side shown in the upper part of FIG. 3 so that the size of the light receiving portion of the laser beam L on the surface of the windshield 7 is about 8 mm in diameter, and the work distance is 115 mm.
And the moving speed of the laser light L is set to about 15 mm / s, and the laser light L is applied from the front side of the windshield 7 to the fixing portion 17 located at the boundary portion between the ceramics printed portion 7a and the adhesive layer 16. When the glass moving mechanism 9 is separated from the window frame 6 by a predetermined force after the irradiation with the laser beam L,
In a state where the windshield 7 is adsorbed to the suction disk 10, the windshield 7 is not damaged without being damaged.
Could be removed (separated) from the window frame 6. In this embodiment, the windshield 7 and the window frame 6 are separated from the fixing portion 17. Further, in the present embodiment, when the entire circumference of the windshield 7 is set to 3.6 m, the time required for irradiating the laser beam L using the laser beam irradiation position control mechanism 8 is about 4 minutes. Was.

As described above, according to the glass non-destructive removing apparatus 1 using the glass non-destructive removing method of the present embodiment,
The laser generator 2 can easily generate the laser beam L transmitted through the windshield 7 as a glass even if it is a laminated glass. Further, the laser beam irradiation position control mechanism 8 easily applies the laser beam L transmitted through the windshield 7 to the fixing portion 17 of the windshield 7 fixed to the window frame 6 as an object by the adhesive layer 16 as a joining member. In addition, the laser beam L can be appropriately irradiated, and the laser beam L can be held at a beam diameter corresponding to the size of the fixing portion 17. Irradiation can be performed more easily and more appropriately on the fixing portion 17 of the substrate. Furthermore, the glass moving mechanism 9 can easily and reliably remove (separate) the windshield 7 from the window frame 6 after the irradiation of the laser beam L is completed.

Therefore, according to the glass non-destructive removing apparatus 1 using the glass non-destructive removing method of the present embodiment,
By irradiating the glass fixing portion 17 with the laser beam L only once, the glass windshield 7 can be easily and reliably removed from the window frame 6 as an object without damaging the glass front glass 7. It is possible,
As a result, the windshield 7 itself can be easily reused, and automation can be easily achieved.

The type of the laser light L, the output of the laser light L, the oscillation pulse of the laser light L, the focal position of the laser light L,
The size of the light emitting portion of the laser light L, the moving speed of the laser light L, and the like may be determined as necessary according to the type of glass, the shape of the glass, the thickness of the glass, the state of fixing of the glass, and the like.

When a carbon dioxide laser beam is used as the laser beam L, the wavelength of the carbon dioxide laser beam is 10.6.
μm, so the carbon dioxide laser beam
And the windshield 7 is heated from the front side, and the windshield 7 cannot be removed from the window frame 6 which is an object to be fixed, and the intermediate layer 12 of the windshield 7 may foam. It was found through experiments that the windshield 7 was damaged.

Furthermore, the present invention is not limited to a windshield of an automobile, but also a window glass such as a rear glass and a side glass formed by a tempered glass of an automobile,
Various types of glass fixed to the object by the joining member,
For example, it can be used for reuse of window glass, displays, display panels, etc. of trains.

The present invention is not limited to the above embodiment, but can be variously modified as needed.

[0031]

As described above, according to the glass non-destructive detaching method of the present invention as set forth in claim 1, the glass can be removed from the adhered object without damaging the glass. It has an extremely excellent effect that it can be reused.

Further, according to the glass non-destructive removing method of the present invention, the glass is damaged by irradiating a laser beam having a beam diameter corresponding to the size of the fixing portion to the fixing portion. The glass can be detached from the adherend without giving any stress.

Further, according to the glass non-destructive removing method of the present invention, the YAG laser beam transmits through the glass more reliably and removes the glass from the adherend without damaging the glass. Since the glass can be removed, there is an extremely excellent effect that the glass itself can be reused more easily.

Further, according to the glass non-destructive removing device of the present invention, the laser generating device can easily generate the laser beam transmitted through the glass. Further, the laser light irradiation position control mechanism can easily and appropriately irradiate the laser light transmitted through the glass to the fixing portion of the glass fixed to the object by the bonding member. Furthermore, the glass moving mechanism can easily and reliably remove (separate) the glass from the object after the irradiation of the laser beam is completed. Therefore, there is an extremely excellent effect that the glass can be easily and reliably removed from the object without damaging the glass, and automation can be easily achieved.

According to the glass non-destructive removal apparatus of the present invention, the laser beam irradiation position control mechanism can make the laser beam have a beam diameter corresponding to the size of the fixing portion. In addition to being able to easily and more appropriately irradiate the laser beam to the fixing portion of the glass fixed to the object by the joining member, and irradiating the fixing portion with the laser beam, the glass is damaged. The glass can be removed from the adherend without
As a result, there is an extremely excellent effect that the working time can be easily reduced.

Further, according to the glass non-destructive removal apparatus of the present invention, since the YAG laser beam transmits through the glass more reliably, the glass can be removed from the adherend without damaging the glass. It is possible to easily and surely remove it, and it is possible to achieve automation.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of an embodiment of a glass non-destructive removing apparatus using the glass non-destructive removing method according to the present invention.

FIG. 2 is a schematic view showing a fixed state between a windshield as a glass and a window frame as an object to which a glass nondestructive removing apparatus using the glass nondestructive removing method according to the present invention is applied.

FIG. 3 is a schematic view showing a laser beam irradiation state by a glass non-destructive removing apparatus using the glass non-destructive removing method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Non-destructive glass removal apparatus 2 Laser generator 3 Optical fiber 5 Emission unit 6 Window frame (as an object to be fixed) 7 Front glass (as glass) 8 Laser light irradiation position control mechanism 9 Glass moving mechanism 10 Suction board 15 Elasticity Member 15a Glass-facing surface 16 Adhesive layer (as joining member) 17 Fixing portion L Laser beam

Claims (6)

[Claims] 1. A glass-fixed portion fixed to an object by a joining member is irradiated with laser light transmitted through the glass from the glass side, and the glass fixed to the object can be removed in a non-destructive state. Non-destructive glass removal method characterized by the following. 2. The non-destructive glass removing method according to claim 1, wherein the laser beam is irradiated from the glass side as a beam diameter corresponding to the size of the fixing portion. 3. The method according to claim 1, wherein the laser beam is a YAG laser beam. 4. A laser generator capable of irradiating a laser beam transmitted through glass, a laser beam irradiation position control mechanism capable of controlling an irradiation position of the laser beam emitted from the laser generator, and bonding to an object to be fixed. A non-destructive glass removing device, comprising: a glass moving mechanism capable of holding and moving the glass fixed by the member. 5. The laser beam irradiation position control mechanism according to claim 4, wherein the laser beam irradiation position control mechanism is formed so as to be able to maintain a predetermined distance between the laser light emission position and the fixing portion. Glass non-destructive removal equipment. 6. The non-destructive glass removing apparatus according to claim 4, wherein the laser generator is a YAG laser generator capable of generating a YAG laser beam.