CN114799542A

CN114799542A - Method and system for laser welding glass

Info

Publication number: CN114799542A
Application number: CN202110079427.5A
Authority: CN
Inventors: 姚瑶; 陈上杭; 郭缙; 曹洪涛; 胡述旭; 吕启涛; 高云峰
Original assignee: Han s Laser Technology Industry Group Co Ltd
Current assignee: Han s Laser Technology Industry Group Co Ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2022-07-29

Abstract

The invention relates to a method and a system for laser welding glass, which can correspondingly adjust the action point of a pressing mechanism for applying pressure along with the movement of a light spot of a laser beam for welding, thereby enabling the laser beam to only act near the action point of the pressing mechanism. The pressing mechanism acts on the local part of the plate and can effectively press the plate at the acting point, so that the gap between the plates in the laser beam acting area is in a proper range. Moreover, the action point of the pressing mechanism is dynamically changed. Therefore, after welding is completed, the consistent distance between two adjacent plates at different positions can be ensured. Therefore, the phenomenon of rainbow-like interference fringes after welding can be eliminated, and the welding effect is obviously improved.

Description

Method and system for laser welding glass

Technical Field

The invention relates to the technical field of laser processing, in particular to a method and a system for laser welding of glass.

Background

The glass has the characteristics of corrosion resistance, high hardness, excellent optical performance and the like, and has wide application potential and market prospect in the fields of automobiles, aerospace, electronic semiconductors, biomedicine and the like. During application, glass and glass, or glass and other materials, are generally welded together, and the surface condition and optical characteristics of the glass are maintained.

The ultrafast laser direct welding technology can effectively ensure that the welded material keeps the original properties because intermediate welding flux is not introduced. The ultrafast laser has the characteristics of short pulse duration and high peak power, and only generates a nonlinear effect on a glass material at a focus when being used for welding the glass material, and the glass material is melted and then condensed to form a welding seam. Based on the method, the ultrafast laser can realize direct connection between glass and between glass and other materials, can accurately control heat input and reduce a heat affected zone.

In the ultrafast laser direct welding process, the gap between two pieces of glass is an important factor affecting the welding effect. During the laser action, the distance between the two pieces of glass in the welded area is generally required to be less than 2 microns, even to reach the optical contact condition. However, due to the uneven surface of the material itself or the jig and the influence of the external environment, the distance between the two pieces of material is difficult to be kept in a proper range everywhere. Therefore, the difference of the distance between two pieces of glass at different positions after welding is large, and rainbow-like interference fringes easily appear in the glass, so that the appearance effect and the welding quality are influenced.

Disclosure of Invention

In view of the above, it is necessary to provide a method and a system for laser welding glass, which can improve the welding quality.

A method of laser welding glass comprising the steps of:

stacking a plurality of plates on the surface of the welding jig, wherein at least one of the plates is glass;

applying pressure to local parts of the plurality of plates by using a pressing mechanism so as to press the plurality of plates;

and welding the plates by adopting a laser beam along a preset welding path, and adjusting the action point of the pressing mechanism for applying the pressure according to the position of the light spot of the laser beam on the surfaces of the plates.

In one embodiment, before the step of stacking a plurality of plates on the surface of the welding jig, the method further comprises the steps of: and pretreating each plate to be welded to remove surface impurities and drying.

In one embodiment, the step of welding the plurality of plates along the preset welding path by using the laser beam comprises: the laser beam is kept fixed, and the welding jig drives the plates to feed along a first direction and reciprocate along a second direction perpendicular to the first direction.

In one embodiment, the point of action of the pressing mechanism to apply pressure extends in the second direction.

In one embodiment, when the welding jig drives the plurality of plates to feed along the first direction, the action point of the pressing mechanism applying the pressure moves synchronously along the first direction.

In one embodiment, before the step of welding the plurality of plate materials along the preset welding path by using the laser beam, the method further comprises the following steps: and adjusting the laser beam so that the focal point of the laser beam is positioned at the interface of two adjacent plate materials.

A system for laser welding glass, comprising:

the welding jig is used for bearing a plurality of plates to be welded;

the pressing mechanism is used for applying pressure to local parts of the plates stacked on the surface of the welding jig so as to press the plates tightly; and

the laser device is used for emitting laser beams which can weld the plurality of plates along a preset welding path;

and the action point of the pressing mechanism for applying the pressure is adjustable according to the position of the light spot of the laser beam on the surfaces of the plurality of plates.

In one embodiment, the welding jig is arranged on the three-axis motion platform, and the welding jig can be driven by the three-axis motion platform to feed along a first direction and reciprocate along a second direction perpendicular to the first direction.

In one embodiment, the pressing mechanism includes a long-strip-shaped roller shaft, and the roller shaft extends along the second direction and can abut against the plates stacked on the surface of the welding jig.

In one embodiment, the roller is fixedly disposed relative to the laser in the first direction.

According to the method and the system for laser welding of the glass, along with the movement of the light spot of the laser beam for welding, the action point of the pressing mechanism for applying the pressure can be correspondingly adjusted, so that the laser beam only acts near the action point of the pressing mechanism. The pressing mechanism acts on the local part of the plate and can effectively press the plate at the acting point, so that the gap between the plates in the laser beam acting area is in a proper range. Moreover, the action point of the pressing mechanism is dynamically changed. Therefore, after welding is completed, the consistent distance between two adjacent plates at different positions can be ensured. Therefore, the phenomenon of rainbow-like interference fringes after welding can be eliminated, and the welding effect is obviously improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic flow chart of a method for laser welding glass according to a preferred embodiment of the present invention;

FIG. 2 is a block diagram of a system for laser welding glass according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a glass laser welding process according to a preferred embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 3, the method for laser welding glass according to the preferred embodiment of the present invention includes the following steps S110 to S130.

Step S110, stacking a plurality of plates 10 on the surface of the welding jig, wherein at least one of the plates 10 is glass.

Specifically, the plurality of plates 10 may be entirely made of glass, or some of the plates may be made of glass, and the rest may be made of other materials. As shown in fig. 3, the number of sheets 10 to be welded is generally two. Obviously, the number of sheets 10 to be welded may also be more than two. The surface of the welding jig has a high flatness, so that the plurality of plates 10 can be stably stacked.

Specifically, in this embodiment, between the step S110, the method further includes the steps of: each sheet 10 to be welded is pretreated to remove surface impurities and dried. The pretreatment mode can be that ultrasonic waves are firstly adopted for cleaning and then the cleaning is carried out by airing. By performing the pretreatment, impurities on the surface of the sheet 10 to be welded can be effectively removed, so that the final welding effect can be improved.

Step S120, a pressing mechanism is used to apply pressure to the local portions of the plurality of plates 10, so as to press the plurality of plates 10.

Specifically, the pressing mechanism may apply pressure to the surface of the plate 10 in a mechanical manner, such as a manner of direct contact between a roller and a pressing block, or in a non-mechanical manner, such as a field effect manner or a high-pressure gas effect manner. Since the pressing mechanism applies pressure only to a part of the sheet material 10, the pressing mechanism only partially presses the plurality of sheet materials 10 under the pressure.

The area of the sheet material 10 in contact with the pressing mechanism, or the area of the surface of the sheet material 10 subjected to the pressure of the pressing mechanism, is referred to as the point of application of the pressing mechanism. It can be seen that the point of application of the pressing mechanism is not necessarily a single point, but the entire area where the force is applied to the sheet material 10 can be considered as the point of application of the pressing mechanism. The points of action of the pressing mechanism on the sheet material 10 may be distributed in a point-like region, a strip-like region, or other shaped regions.

Furthermore, the point of action of the pressing mechanism on the sheet 10 is not fixed, but is dynamically adjustable. That is, by adjusting the position of the point of action of the pressing mechanism on the sheet material 10, different areas of the plurality of sheet materials 10 can be pressed in sequence.

Step S130, welding the plurality of plates 10 along a preset welding path by using the laser beam 20, and adjusting a point of action of the pressing mechanism to apply the pressure according to a position of a light spot of the laser beam 20 on the surfaces of the plurality of plates 10.

Specifically, the welding path may be S-shaped, zigzag-shaped, spirally linear, etc., as long as it is ensured that the laser beam 20 can sequentially melt the regions to be welded of the sheet 10. The laser beam 20 used for welding is typically a femtosecond laser, the wavelength of the laser beam 20 being approximately 1064 nm and the pulse width being less than 900 femtoseconds. Before welding, parameters such as power and collimation of a laser are generally required to be debugged so as to achieve the optimal welding effect.

Specifically, in this embodiment, before step S130, the method further includes the steps of: the laser beam 20 is adjusted so that the focal point of the laser beam 20 is located at the interface of two adjacent sheet materials 10. The energy of the laser beam 20 is most concentrated at the focal point and the welding of the sheet 10 is achieved primarily by melting and resolidifying of the material at the interface. Therefore, the welding effect can be significantly improved by adjusting the focal point of the laser beam 20 to the interface between the adjacent two plate materials 10.

Further, as the welding process progresses, the position of the spot of the laser beam 20 on the surface of the sheet material 10 will also vary in real time. Therefore, as the welding process proceeds, the point of action of the pressing mechanism to apply pressure may also be adjusted accordingly. In this way, it can be ensured that the spot of the laser beam 20 is always located in the vicinity of the point of action of the stitching mechanism.

The pressing mechanism has a better pressing effect on the sheets 10 near the point of action, so that the distance between the sheets 10 is kept within a suitable range, such as within 2 microns. Therefore, when the laser beam 20 welds the vicinity of the point of application of the bonding mechanism, the gap between the two sheets 10 will also be maintained within a suitable range. Moreover, since the action point of the pressing mechanism is dynamically changed, the pressing mechanism can be matched with the laser beam 20 to realize 'pressing and welding' on the plate 10. So, can guarantee after the welding is accomplished that two adjacent panels 10 keep unanimous in the clearance of different positions, and the homoenergetic enough keeps in suitable within range to can eliminate the phenomenon that the rainbow line form interference fringe appears after the welding, show the improvement welding effect.

Moreover, because the pressing mechanism applies pressure to the local part of the plate 10, the requirement on the flatness of the plate 10 is low, so that the problem of uneven surface of the plate 10 can be overcome. At the same time, the size of the sheet 10 that can be welded may also be larger.

In the present embodiment, the step of welding the plurality of plate materials 10 along the preset welding path by using the laser beam 20 includes: the laser beam 20 is kept fixed, and the welding jig drives the plurality of plates 10 to feed along the first direction and reciprocate along the second direction perpendicular to the first direction.

As shown in fig. 3, the first direction may be an X direction in an XY plane, and the second direction may be a Y direction. The welding jig is fed in the X direction while reciprocating in the Y direction, so that the light spot of the laser beam 20 moves along a zigzag path with respect to the sheet material 10, thereby completing welding of the sheet material 10.

It can be seen that, in the process of welding the plates 10 by using the laser beam 20, the absolute position of the laser beam 20 is not changed, and the welding jig drives the plurality of plates 10 to move so that the laser beam 20 moves relative to the plates 10.

It should be noted that in other embodiments, the welding jig may also be held stationary, with the laser beam 20 being directed from the laser head. Further, welding of the sheet material 10 can also be accomplished by moving the laser head along the welding path.

Further, in the present embodiment, the point of action of the pressing mechanism to apply the pressing force extends in the second direction. That is, the points of action of the hold-down mechanism are distributed within a strip-shaped area.

Specifically, the pressing mechanism may press the plate 10 by a roller shaft extending in the second direction. In this way, when the laser beam 20 reciprocates in the second direction relative to the sheet material 10, the pressing effect of the pressing mechanism on the sheet material 10 is good, and the distance between two adjacent sheet materials 10 in the second direction can be kept consistent. .

The action point of the pressing mechanism applying the acting force can move synchronously with the facula of the laser beam 20, and can also move asynchronously, as long as the pressing mechanism can ensure that the distance between two adjacent plates 10 in a certain area is in a proper range when the laser beam 20 melts the area of the plates 10.

Furthermore, in the present embodiment, when the welding jig drives the plurality of plates 10 to feed along the first direction, the action point of the pressing mechanism applying the pressure moves synchronously along the first direction.

Specifically, in the first direction, the stitching mechanism may remain stationary with the laser emitting the laser beam 20. By means of the preliminary adjustment, the laser spot of the laser beam 20 can be brought to an optimum distance from the point of action of the pressing means. At this optimum distance, the optimum welding effect can be achieved. After the pre-welding adjustment is completed, the pressing mechanism is kept fixed relative to the laser beam 20 in the first direction, so that in the subsequent welding process, the optimal distance between the light spot of the laser beam 20 and the action point of the pressing mechanism is always kept, and the adjustment is not needed again.

It is noted that in other embodiments, the point of action of the pressing mechanism may also always follow the spot of the laser beam 20 in synchronization with the movement in other embodiments. For example, as the laser beam 20 moves along the S-shaped welding path, the point of action of the hold-down mechanism also moves synchronously along the S-shaped path.

In addition, referring to fig. 2 and fig. 3, the present invention further provides a system 200 for laser welding glass. The system for laser welding glass comprises a welding fixture 210, a pressing mechanism 220 and a laser 230. Wherein:

the welding jig 210 is used for carrying a plurality of plates 10 to be welded. The plurality of sheets 10 may be all glass, or some of the sheets may be glass, with the remainder being other materials. As shown in fig. 3, the number of sheets 10 to be welded is generally two. Obviously, the number of sheets 10 to be welded can also be more than two. The surface of the welding jig 210 has a high flatness, so that a plurality of sheets 10 can be stably stacked.

The pressing mechanism 220 is used for applying pressure to local portions of the plurality of plates 10 stacked on the surface of the welding jig 210 so as to press the plurality of plates 10. The pressing mechanism 220 may apply pressure to the surface of the plate 10 mechanically, such as by direct contact between a roller and a pressing block, or may apply pressure to the surface of the plate 10 non-mechanically, such as by field action or high-pressure gas action. Since the pressing mechanism 220 applies pressure to only a part of the sheet material 10, the pressing mechanism 220 only partially presses the plurality of sheet materials 10 under the pressure.

The area where the plate material 10 contacts the pressing mechanism 220, or the area where the surface of the plate material 10 is pressed by the pressing mechanism 220, is referred to as the point of application of the pressing mechanism 220. It can be seen that the point of application of the pressing mechanism 220 is not necessarily a single point, but the entire area where the force is applied to the sheet material 10 can be regarded as the point of application of the pressing mechanism 220. The point of action of the pressing mechanism 220 on the sheet material 10 may be distributed in a point-like region, a strip-like region, or other shape.

Furthermore, the point of action of the pressing mechanism 220 on the sheet material 10 is not fixed, but is dynamically adjustable. That is, by adjusting the position of the point of action of the pressing mechanism 220 on the sheet material 10, different areas of the plurality of sheet materials 10 can be sequentially pressed.

Specifically, the pressing mechanism 220 may be disposed on the corresponding servo mechanism, and the servo mechanism drives the pressing mechanism 220 to move, so as to adjust the acting point. In addition, the pressing mechanism 220 can also be kept fixed, and the adjustment of the pressing mechanism 220 to the action point of the plate 10 is realized through the movement of the welding jig 210.

The laser 230 is used to emit a laser beam 20, and the laser beam 20 can weld a plurality of sheets 10 along a predetermined welding path. The welding path may be S-shaped, zigzag-shaped, spiral-shaped, etc., as long as it is ensured that the laser beam 20 is able to melt the areas of the sheet 10 to be welded in sequence. The laser 230 is typically an ultrafast laser, and the emitted laser beam 20 has a wavelength of about 1064 nm and a pulse width of less than 900 femtoseconds.

Specifically, the laser 230 may be driven by a corresponding servo mechanism to achieve movement of the laser beam 20 along the predetermined welding path. In addition, the laser 230 may also be kept fixed, and the movement of the welding jig 210 realizes the movement of the spot of the laser beam 20 relative to the plate 10.

In addition, the above-mentioned system for laser welding glass generally further comprises an optical conduction system, a focusing objective lens and a control system for controlling the welding process.

The position of the spot of the laser beam 20 on the surface of the sheet material 10 will also vary in real time as the welding process progresses. Therefore, as the welding process proceeds, the point of action of the pressing mechanism 220 to apply pressure may also be adjusted accordingly. In this way, it can be ensured that the spot of the laser beam 20 is always located in the vicinity of the action point of the pressing mechanism 220.

The pressing mechanism 220 has a better pressing effect on the sheets 10 near the action point, so that the distance between the sheets 10 is kept within a proper range, such as 2 microns. Therefore, when the laser beam 20 welds the vicinity of the point of application of the bonding mechanism 220, the gap between the two sheets 10 is also maintained within a proper range. Moreover, since the point of application of the pressing mechanism 220 is dynamically changed, the pressing and welding operations can be performed on the sheet material 10 in cooperation with the laser beam 20. So, can guarantee after the welding is accomplished that two adjacent panels 10 keep unanimous in the clearance of different positions, and the homoenergetic enough keeps in suitable within range to eliminate the phenomenon that the rainbow line form interference fringe appears after the welding, show the improvement welding effect.

Moreover, since the pressing mechanism 220 applies pressure to a local portion of the plate 10, the requirement for the flatness of the plate 10 itself is low, so that the problem of uneven surface of the plate 10 itself can be overcome. Meanwhile, the system 200 for laser welding glass can also weld a larger size of the plate material 10.

In this embodiment, the system 200 for laser welding of glass further includes a three-axis moving platform (not shown), the welding jig 210 is disposed on the three-axis moving platform, and the welding jig 210 can be driven by the three-axis moving platform to feed along a first direction and reciprocate along a second direction perpendicular to the first direction.

Specifically, the three-axis motion platform can move in X, Y, Z three directions, the first direction can be the X direction in the XY plane, and the second direction is the Y direction. By moving in the Z direction, the focal point of the laser beam 20 from the laser 230 can be adjusted to be just at the interface of two adjacent sheets 10.

It can be seen that by providing a three-axis motion platform, the absolute positions of the laser 230 and the stitching mechanism 220 can be maintained during the welding process. Due to the delicate internal structure of the laser 230, slight shaking after the debugging process may cause parameter disorder. Therefore, the laser 230 is kept fixed and welding is completed by driving the welding jig 210 to move, so that the laser 230 is prevented from shaking in the welding process, the stability of the parameters of the laser beam 20 is ensured, and the welding effect is improved.

Further, in the embodiment, the pressing mechanism 220 includes a long bar-shaped roller (not shown), which extends along the second direction and can abut against the plates 10 stacked on the surface of the welding fixture 210. In this manner, the pressing mechanism 220 can maintain a constant position with respect to the sheet material 10 while the laser beam 20 reciprocates in the second direction with respect to the sheet material 10.

Further, in the present embodiment, the roller shaft is fixedly disposed with respect to the laser 230 in the first direction.

Specifically, the roller shaft and the laser 230 may be coupled by a bracket, thereby remaining relatively fixed in the first direction. By means of pre-adjustment, the laser spot of the laser beam 20 can be located at an optimum distance from the point of action of the pressing means 220. At this optimum distance, the optimum welding effect can be achieved. After the pre-welding calibration is completed, the roll shaft is kept fixed relative to the laser 230, so that the optimal distance between the light spot of the laser beam 20 and the action point of the pressing mechanism 220 is always kept in the subsequent welding process, and the calibration is not required again.

It should be noted that in other embodiments, the point of action of the pressing mechanism 220 may also move synchronously with the spot of the laser beam 20 in other embodiments. For example, as the laser beam 20 moves along the S-shaped welding path, the point of application of the clamping mechanism 220 also moves synchronously along the S-shaped path.

The method and system 200 for laser welding glass can adjust the action point of the pressing mechanism 220 to apply pressure along with the movement of the laser beam 20 spot, so that the laser beam 20 can only act near the action point of the pressing mechanism 220. The pressing mechanism 220 acts on a local part of the plate 10, and can effectively press the plate 10 at the acting point, so as to ensure that the gap between the plates 10 in the acting area of the laser beam 20 is in a proper range. Moreover, the action point of the pressing mechanism 220 is dynamically changed. Therefore, the distance between two adjacent plates 10 at different positions can be ensured to be consistent after welding is completed. Therefore, the phenomenon of rainbow-like interference fringes after welding can be eliminated, and the welding effect is obviously improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method of laser welding glass comprising the steps of:

2. The method for laser welding glass according to claim 1, wherein before the step of stacking a plurality of plates on the surface of the welding jig, the method further comprises the steps of: and pretreating each plate to be welded to remove surface impurities and drying.

3. The method of laser welding glass as defined in claim 1, wherein the step of welding the plurality of sheets along a predetermined welding path using a laser beam comprises: the laser beam is kept fixed, and the welding jig drives the plates to feed along a first direction and reciprocate along a second direction perpendicular to the first direction.

4. The method for laser welding glass as recited in claim 3, wherein a point of action at which the pressing mechanism applies the pressing force extends in the second direction.

5. The method for laser welding glass according to claim 4, wherein when the welding jig drives the plurality of plates to be fed in the first direction, the action point of the pressing mechanism applying the pressure moves synchronously in the first direction.

6. The method for laser welding glass sheets according to any one of claims 1 to 5, wherein before the step of welding the plurality of sheet materials along a predetermined welding path using the laser beam, further comprising the steps of: and adjusting the laser beam so that the focal point of the laser beam is positioned at the interface of two adjacent plate materials.

7. A system for laser welding glass, comprising:

the welding jig is used for bearing a plurality of plates to be welded;

8. The system for laser welding glass according to claim 7, further comprising a three-axis motion platform, wherein the welding jig is disposed on the three-axis motion platform, and the welding jig can be driven by the three-axis motion platform to feed along a first direction and reciprocate along a second direction perpendicular to the first direction.

9. The system for laser welding glass according to claim 8, wherein the pressing mechanism comprises an elongated roller shaft extending along the second direction and capable of abutting against the plates stacked on the surface of the welding jig.

10. The system for laser welding glass as recited in claim 9, wherein the roller is fixedly disposed relative to the laser in the first direction.