Laser drilling apparatus for glass sheets

Abstract

The utility model provides a kind of laser drilling equipment for glass plate, comprising: rack;Cleaning tank, adjustably set in rack, the bottom outside of cleaning tank is equipped with ultrasonic generator;Jig assembly, adjustably set in rack, it at least part extends into cleaning tank, glass plate is assembled in jig assembly and is in cleaning tank;Spray head assembly, adjustably set in cleaning tank or jig assembly, spray head assembly includes spray head main body, spray head main body is equipped with light guide hole, light guide hole is equipped with light transmission plate in, for the dry area close to light inlet end and the wet area close to light outlet end, water outlet is equipped on the inner wall of light guide hole, and water outlet is in wet area;And laser assembly, for generating laser beam, laser beam can be transmitted from dry area to wet area to glass plate.The utility model is punched when glass plate, and hole forming quality is better and crack is less, can effectively avoid the emergence of defects such as slag turning and recasting layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass processing technical field especially relates to a laser drilling equipment for glass plate. BACKGROUND

[0002] Glass is a brittle material, and traditional mechanical processing has multiple disadvantages. At present, laser processing is used to replace traditional mechanical processing. Nanosecond short pulse laser has low cost and high material removal rate. However, when nanosecond laser is used for glass drilling, the hole and the hole wall are prone to appear phenomena such as slag turning, recasting layer and cracks. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a laser drilling equipment for glass plate, which has better hole forming quality, fewer cracks and smoother hole wall compared with traditional nanosecond laser drilling equipment, and can effectively avoid the occurrence of defects such as slag turning and recasting layer.

[0004] The embodiment of the utility model realizes the following technical scheme:

[0005] A laser drilling equipment for glass plate comprises a rack, a cleaning tank adjustably arranged on the rack, an ultrasonic generator arranged on the outside of the bottom of the cleaning tank, a jig assembly adjustably arranged on the rack and extending at least partially into the cleaning tank, a glass plate assembled on the jig assembly and located in the cleaning tank, a spray head assembly adjustably arranged on the cleaning tank or the jig assembly, the spray head assembly comprising a spray head body, a light guide hole penetrating through the spray head body, a light transmission plate arranged in the light guide hole for separating the light guide hole into a dry zone near the light inlet end and a wet zone near the light outlet end, a water spray opening arranged on the inner wall of the light guide hole and located in the wet zone, and a laser assembly for generating a laser beam, which can be transmitted from the dry zone to the wet zone to the glass plate.

[0006] According to a preferred embodiment, the spray head body comprises a main body part and a lower cover plate connected to each other, the light transmission plate is assembled on the main body part, and the lower cover plate is located downstream of the light transmission plate in the transmission direction of the laser beam; the light guide hole comprises a first hole section arranged on the main body part and a second hole section arranged on the lower cover plate; a flow guide ring groove is opened on the end face of the main body part towards the lower cover plate around the first hole section, and a water inlet hole is opened on the side wall of the main body part and communicates with the flow guide ring groove; the lower cover plate and the main body part have a water spray gap in the direction close to the light guide hole, and the water spray gap constitutes the water spray opening.

[0007] According to a preferred embodiment, the inner diameter of the second hole section is smaller than the inner diameter of the first hole section.

[0008] According to a preferred embodiment, a first assembly step and a second assembly step are formed on the inner wall of the first hole section, the second assembly step is closer to the lower cover plate than the first assembly step; the light-transmitting plate is lapped on the second assembly step, and a press-fit ring is assembled on the first assembly step and abuts against the light-transmitting plate.

[0009] According to a preferred embodiment, the light-transmitting plate is made of sapphire.

[0010] According to a preferred embodiment, the nozzle assembly further comprises a nozzle adjusting plate and a nozzle connecting plate, the main body part is provided with a connecting block, the nozzle connecting plate is connected to the main body part through the connecting block, and the nozzle connecting plate is adjustably assembled to the nozzle adjusting plate; the transmission direction of the laser beam is defined as a first direction, the adjusting direction of the nozzle connecting plate relative to the nozzle adjusting plate is a second direction, the adjusting direction of the nozzle adjusting plate relative to the jig assembly is a third direction, and the first direction, the second direction and the third direction are perpendicular to each other in pairs.

[0011] According to a preferred embodiment, a first through hole is formed through the nozzle adjusting plate, a second through hole is formed through the nozzle connecting plate, and the laser beam enters the light guide hole after sequentially passing through the first through hole and the second through hole.

[0012] According to a preferred embodiment, the jig assembly comprises an epitaxial plate and a bracket connected to each other, the bracket extends into the cleaning tank, the bracket is provided with an assembly plate, and the glass plate is assembled on the assembly plate.

[0013] According to a preferred embodiment, the glass plate laser drilling equipment further comprises a support plate, the cleaning tank is fixedly installed on the support plate through a tank frame, the support plate is provided with a driving member and a fixed stand plate, the epitaxial plate is provided with a movable stand plate and a driving rod, the driving member acts on the driving rod, and the movable stand plate is slidably connected to the fixed stand plate.

[0014] According to a preferred embodiment, the top end of the rack is provided with a marble plate, the upper side of the marble plate is provided with two spaced-apart marble stand columns, the two marble stand columns are connected through a marble top plate to form a gantry structure, and the laser assembly is assembled on the gantry structure.

[0015] The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] This invention utilizes a water-guided laser to drill holes in glass sheets, achieving cooling of the glass sheet. Simultaneously, the glass sheet is placed in a cleaning tank, where the water, under the action of an ultrasonic generator, creates cavitation effects and acoustic flow fields. The shock waves generated by the oscillation of cavitation bubbles and the jets produced when they collapse clean the hole walls and surface of the glass sheet, removing slag from the holes and preventing splashes from the drilling process from redepositing on the hole walls and openings. Furthermore, the acoustic flow field formed on the glass sheet surface and near the cavitation bubbles accelerates water convection, further increasing the cooling rate of the glass sheet and reducing the probability of recast layers forming on the hole walls. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of the laser drilling equipment for glass plates provided in this embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the assembly structure of the cleaning tank, fixture assembly, and nozzle assembly provided in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the cleaning tank and the ultrasonic generator provided in an embodiment of the present utility model;

[0021] Figure 4 A three-dimensional structural schematic diagram of the nozzle assembly provided in an embodiment of this utility model;

[0022] Figure 5 An exploded view of the nozzle assembly provided in an embodiment of this utility model;

[0023] Figure 6 This is a top view of the nozzle assembly after the straight handle has been removed, as provided in an embodiment of the present invention.

[0024] Figure 7 for Figure 6 Sectional view of section AA;

[0025] Figure 8 for Figure 7 A magnified view of the structure at point B.

[0026] Icon: 1, rack; 11, marble plate; 111, marble column; 112, marble top plate; 2, cleaning tank; 21, tank frame; 3, jig assembly; 31, epitaxial plate; 32, bracket; 33, assembly plate; 34, driving rod; 35, movable vertical plate; 36, fixed vertical plate; 37, driving piece; 4, nozzle assembly; 401, flow guide ring groove; 402, water inlet hole; 403, water spraying gap; 41, nozzle main body; 41a, main body part; 41b, lower cover plate; 410, light guide hole; 410a, first hole section; 410b, second hole section; 4101, first assembly step; 4102, second assembly step; 411, water inlet block; 4110, series groove; 412, adapter; 413, connecting block; 414, light transmission plate; 415, press-fitting ring; 42, nozzle connecting plate; 421, second through hole; 43, nozzle adjusting plate; 431, first through hole; 44, straight rod type handle; 5, laser assembly; 6, ultrasonic generator; 7, supporting plate; 8, adjusting assembly; 9, laser beam; a, dry area; b, wet area; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0027] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0028] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0030] Please refer to Figures 1 to 8The application discloses a laser drilling device for glass plates, which comprises a rack 1, a cleaning tank 2, a jig assembly 3, a nozzle assembly 4 and a laser assembly 5. The cleaning tank 2 is adjustably arranged on the rack 1, and an ultrasonic generator 6 is arranged outside the bottom of the cleaning tank 2. The jig assembly 3 is adjustably arranged on the rack 1 and extends into the cleaning tank 2 at least partially, and a glass plate (not shown in the figure) is arranged on the jig assembly 3 and in the cleaning tank 2. The nozzle assembly 4 is adjustably arranged on the cleaning tank 2 or the jig assembly 3, and the nozzle assembly 4 comprises a nozzle main body 41, a light guide hole 410 is arranged through the nozzle main body 41, and a light transmission plate 414 is arranged in the light guide hole 410, so that the light guide hole 410 is divided into a dry area a near an entrance of light and a wet area b near an exit of light. A water spraying hole is arranged on the inner wall of the light guide hole 410 and is located in the wet area b. The laser assembly 5 is used for generating a laser beam 9, and the laser beam 9 can be transmitted from the dry area a to the wet area b to the glass plate. In use, the water spraying hole is connected with a water source (not shown in the figure), so that the water spraying hole can continuously provide water flow to form a light guide water flow on the transmission path of the laser beam 9 between the wet area b and the glass plate, and the water guide transmission of the laser beam 9 is realized. The laser beam 9 used herein is a nanosecond laser. The glass plate is drilled by the water guide laser, so that the cooling of the glass plate can be realized. Meanwhile, the glass plate is arranged in the cleaning tank 2, and the water in the cleaning tank 2 forms cavitation effect and acoustic streaming field and other phenomena under the action of the ultrasonic generator 6. The shock wave generated by the oscillation of cavitation bubbles and the jet flow when the cavitation bubbles collapse can clean the hole wall of the hole generated by the laser beam 9 on the glass plate and the surface of the glass plate, can remove the slag in the hole and prevent the splashes generated by the drilling from being deposited on the hole wall and the hole again. The acoustic streaming field formed near the glass plate surface and the cavitation bubbles accelerates the convection of water, further improves the cooling speed of the glass plate, and is beneficial to reducing the probability of the occurrence of the recast layer of the hole wall. Compared with the traditional nanosecond laser drilling device, the scheme provided by the embodiment has better hole forming quality, fewer cracks and smoother hole wall, and can effectively avoid the occurrence of defects such as slag turning and recast layer.

[0031] The nozzle main body 41 comprises a main body part 41a and a lower cover plate 41b connected with each other, the light transmission plate 414 is arranged on the main body part 41a, and the lower cover plate 41b is located downstream of the light transmission plate 414 in the transmission direction of the laser beam 9. The light guide hole 410 comprises a first hole section 410a arranged on the main body part 41a and a second hole section 410b arranged on the lower cover plate 41b. The end face of the main body part 41a towards the lower cover plate 41b is provided with a flow guide ring groove 401 around the first hole section 410a, and the side wall of the main body part 41a is provided with a water inlet hole 402 in communication with the flow guide ring groove 401. In the direction close to the light guide hole 410, the lower cover plate 41b has a water spraying gap 403 with the main body part 41a, the flow guide ring groove 401 is communicated to the first hole section 410a and the second hole section 410b through the water spraying gap 403, and the water spraying gap 403 constitutes the water spraying hole.Figure 7 and Figure 8 As shown, the transmission direction of the laser beam 9 is the first direction X. The lower cover plate 41b is detachably mounted on the lower end face of the main body 41a by screws. The guide ring groove 401 is blocked and limited by the lower cover plate 41b, forming a hollow cavity. In use, the water inlet 402 is connected to an external water source to deliver water to the area of ​​the guide ring groove 401. The water is accelerated and sprayed towards the light guide hole 410, i.e., the first hole section 410a and the second hole section 410b, through the water spray gap 403 to form a light guide water flow. While guiding the laser beam 9, it can also cool the light-transmitting plate 414, extending the service life of the equipment.

[0032] There are multiple water inlets 402, which are arranged circumferentially around the main body 41a.

[0033] In this embodiment, the inner diameter of the second aperture segment 410b is smaller than the inner diameter of the first aperture segment 410a. In this embodiment, the first aperture segment 410a is a stepped aperture, and the inner diameter of the second aperture segment 410b is smaller than the minimum inner diameter of the first aperture segment 410a. This allows the water flow to flow towards the central region of the light guide hole 410 under the guidance of the lower cover plate 41b after leaving the water spray gap 403, thus promoting the formation of the light guide water flow.

[0034] Optionally, the light guide hole 410 can be a square hole or a round hole.

[0035] like Figure 8 As shown, a first mounting step 4101 and a second mounting step 4102 are formed on the inner wall of the first hole section 410a. The second mounting step 4102 is closer to the lower cover plate 41b than the first mounting step 4101. The light-transmitting plate 414 overlaps the second mounting step 4102. A pressure ring 415 is mounted on the first mounting step 4101, and the pressure ring 415 abuts against the light-transmitting plate 414. In this embodiment, the pressure ring 415 is detachably mounted on the first mounting step 4101 by screws or bolts, and is used to fix the light-transmitting plate 414 on the second mounting step 4102. Optionally, the light-transmitting plate 414 is made of sapphire.

[0036] like Figure 5 and Figure 8 As shown, the main body 41a is a hollow cuboid, with water inlets 402 located on its four sides. Water inlet blocks 411 are mounted on each of the four sides of the main body 41a, and adapters 412 are mounted on the water inlet blocks 411. Specifically, a series groove 4110 is formed on the side of the water inlet block 411 facing the main body 41a. The series groove 4110 is used to connect all the water inlets 402 located on the same side of the main body 41a in series. In use, the water source is connected to the adapter 412 via a water pipe (not shown in the figure). The adapter 412 is connected to the series groove 4110 to simultaneously supply water to all the water inlets 402 connected in series by the series groove 4110.

[0037] As shown in Figures 4 to 7 , the nozzle assembly 4 further comprises a nozzle adjusting plate 43 and a nozzle connecting plate 42, wherein the main body part 41a is provided with a connecting block 413, the nozzle connecting plate 42 is connected to the main body part 41a through the connecting block 413, and the nozzle connecting plate 42 is adjustably assembled to the nozzle adjusting plate 43 through a slide rail slide block assembly. In this embodiment, the nozzle adjusting plate 43 is optionally slidably connected to the jig assembly 3 through a slide rail slide block assembly. The adjusting direction of the nozzle connecting plate 42 relative to the nozzle adjusting plate 43 is defined as a second direction Y, the adjusting direction of the nozzle adjusting plate 43 relative to the jig assembly 3 is defined as a third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other in pairs. In this embodiment, as shown in Figure 5 , a first through hole 431 is provided through the nozzle adjusting plate 43, and a second through hole 421 is provided through the nozzle connecting plate 42, and the laser beam 9 enters the light guide hole 410 after passing through the first through hole 431 and the second through hole 421 in sequence. In this way, the spatial position of the nozzle assembly 4 is adjusted to adapt to the spatial position of the jig assembly 3 and the laser assembly 5.

[0038] In some embodiments, straight rod type handles 44 are assembled on the nozzle connecting plate 42 and the nozzle adjusting plate 43, which are used to cooperate with the nozzle adjusting plate 43 and the jig assembly 3 to correspondingly lock the nozzle connecting plate 42 and the nozzle adjusting plate 43. In other embodiments, the nozzle connecting plate 42 and the nozzle adjusting plate 43 can also be driven by air cylinders or electric push rods.

[0039] As shown in Figure 2 , the jig assembly 3 comprises an epitaxial plate 31 and a bracket 32 connected to each other, the bracket 32 extends into the cleaning tank 2, the bracket 32 is provided with an assembly plate 33, and a glass plate is assembled on the assembly plate 33. The glass plate laser drilling device further comprises a supporting plate 7, the cleaning tank 2 is fixedly installed on the supporting plate 7 through a tank bracket 21, the supporting plate 7 is provided with a driving member 37 and a fixed stand plate 36, the epitaxial plate 31 is provided with a movable stand plate 35 and a driving rod 34, the driving member 37 acts on the driving rod 34, and the movable stand plate 35 is slidably connected to the fixed stand plate 36. Optionally, the driving member 37 is an air cylinder, which is used to drive the jig assembly 3 to move longitudinally through the driving rod 34. It should be noted that the longitudinal direction herein is parallel to the first direction X in the foregoing. The cleaning tank 2 and the jig assembly 3 are installed on the rack 1 through the supporting plate 7.

[0040] Optionally, a negative pressure hole is formed in the assembly plate 33, and the glass plate is fixed on the assembly plate 33 by negative pressure adsorption. In another embodiment, the glass plate can also be positioned on the assembly plate 33 by a conventional mechanical pressure assembly, such as a clamping screw provided on the assembly plate 33, which is a prior art and will not be described here.

[0041] In the embodiment, the nozzle adjusting plate 43 is slidingly installed on the extension plate 31 through a sliding rail and sliding block assembly.

[0042] As shown in Figure 1 and Figure 2 The top end of the rack 1 is configured with a marble plate 11, the upper side of the marble plate 11 is configured with two marble columns 111 arranged at intervals, the two marble columns 111 are connected through a marble top plate 112 to form a gantry structure, and the laser assembly 5 is assembled in the gantry structure.

[0043] Further, the glass plate laser drilling device further comprises an adjusting assembly 8 installed between the marble plate 11 and the supporting plate 7, used to adjust the spatial position of the supporting plate 7 in the second direction Y and the third direction Z, so as to realize the adjustable spatial position of the cleaning tank 2 and the jig assembly 3 relative to the rack 1.

[0044] Optionally, the adjusting assembly 8 is a cross sliding platform.

[0045] The laser assembly 5 comprises a nanosecond laser and a galvanometer head, used to generate nanosecond laser to form a laser beam 9 for drilling. In the embodiment, the galvanometer head is assembled on the marble top plate 112, and in the working process, the cleaning tank 2 and the jig assembly 3 are adjusted through the adjusting assembly 8, so as to adjust the position of the glass plate to match the spatial position of the galvanometer head.

[0046] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the technical field, under the premise of not departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered as the protection range of the utility model.

Claims

1. A laser drilling device for glass sheets, characterized in that, include: frame; A cleaning tank is adjustablely mounted on the frame, and an ultrasonic generator is disposed on the outer bottom of the cleaning tank; A fixture assembly is adjustablely disposed on the frame and extends at least partially into the cleaning tank, and a glass plate is fitted onto the fixture assembly and is located within the cleaning tank; A nozzle assembly, adjustablely mounted on the cleaning tank or the fixture assembly, includes a nozzle body with a through-hole for guiding light. A light-transmitting plate is disposed within the light guide hole to divide it into a dry area near the light inlet and a wet area near the light outlet. A water spray nozzle is disposed on the inner wall of the light guide hole, located within the wet area. A laser assembly for generating a laser beam that can be transmitted from the dry area to the wet area and then to the glass plate.

2. The laser drilling equipment for glass sheets according to claim 1, characterized in that, The nozzle body includes a main body and a lower cover plate connected to each other. The light-transmitting plate is assembled on the main body. In the transmission direction of the laser beam, the lower cover plate is located downstream of the light-transmitting plate. The light guide hole includes a first hole section disposed in the main body and a second hole section disposed in the lower cover plate; A flow guide groove is formed around the first hole section on the end face of the main body facing the lower cover plate, and a water inlet hole communicating with the flow guide groove is formed on the side wall of the main body. In the direction near the light guide hole, there is a water spray gap between the lower cover plate and the main body, and the water spray gap constitutes the water spray nozzle.

3. The laser drilling equipment for glass sheets according to claim 2, characterized in that, The inner diameter of the second hole is smaller than the inner diameter of the first hole.

4. The laser drilling equipment for glass sheets according to claim 2, characterized in that, The inner wall of the first hole section is provided with a first assembly step and a second assembly step, and the second assembly step is closer to the lower cover plate than the first assembly step. The light-transmitting plate overlaps the second assembly step, and a pressing ring is mounted on the first assembly step, the pressing ring abutting against the light-transmitting plate.

5. The laser drilling equipment for glass sheets according to claim 1, characterized in that, The light-transmitting panel is made of sapphire.

6. The laser drilling equipment for glass sheets according to claim 2, characterized in that, The nozzle assembly further includes a nozzle adjusting plate and a nozzle connecting plate, wherein a connecting block is disposed on the main body, the nozzle connecting plate is connected to the main body through the connecting block, and the nozzle connecting plate is adjustablely mounted to the nozzle adjusting plate; The transmission direction of the laser beam is defined as the first direction, the adjustment direction of the nozzle connecting plate relative to the nozzle adjusting plate is defined as the second direction, and the adjustment direction of the nozzle adjusting plate relative to the fixture assembly is defined as the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

7. The laser drilling equipment for glass sheets according to claim 6, characterized in that, The nozzle adjustment plate has a first through hole, and the nozzle connection plate has a second through hole. The laser beam passes through the first through hole and the second through hole in sequence and then enters the light guide hole.

8. The laser drilling equipment for glass sheets according to claim 1, characterized in that, The fixture assembly includes an interconnected extension plate and a bracket, the bracket extending into the cleaning tank, and an assembly plate disposed on the bracket, the glass sheet being assembled onto the assembly plate.

9. The laser drilling equipment for glass sheets according to claim 8, characterized in that, The laser drilling equipment for glass sheets also includes a support plate. The cleaning tank is fixedly installed on the support plate by a tank frame. The support plate is equipped with a driving component and a fixed plate. The extension plate is provided with a movable plate and a driving rod. The driving component acts on the driving rod. The movable plate is slidably connected to the fixed plate.

10. The laser drilling equipment for glass sheets according to claim 1, characterized in that, The top of the frame is equipped with a marble slab, and the upper side of the marble slab is equipped with two spaced marble columns. The two marble columns are connected by a marble top plate to form a gantry structure, and the laser assembly is mounted on the gantry structure.

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