Combined machining equipment and machining method based on double lasers

Abstract

The invention discloses combined machining equipment based on double lasers and a machining method, and belongs to the field of laser machining. Comprising a bearing platform, a machining platform, a driving mechanism, a focus lens, a light source assembly and an adjusting lens set. The light source assembly intermittently emits a first light beam and a second light beam, the first light beam and the second light beam penetrate through the focus lens to be projected to a to-be-machined product after being changed in direction through the adjusting lens set, and product machining is completed in the process that the machining platform and the bearing platform move relatively through the driving mechanism. Due to the fact that the position where the first light beam is projected on the product to be machined is located at the front end of the moving direction of the machining platform, in the machining process, the first light beam conducts primary machining on the position of each net point on the surface of the product to be machined, and the surface of glass is subjected to hot melting and stress damage; then, the second light beam follows the first light beam to carry out secondary combined machining on each dot position on the surface of the to-be-machined product; and the surface lattice point structure meeting the requirement is effectively processed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser processing, in particular to a composite processing equipment and processing method based on double lasers. BACKGROUND

[0002] The core optical components of the edge-lit light source display are the precise combination of edge-lit light source (Edge-Lit LED) and light guide plate (Light Guide Plate, LGP). Specifically, the edge-lit light source refers to closely arranging LED light strips at the small edges of one side or both sides of the light guide plate, and the light guide plate is a rectangular thin plate made of high optical grade transparent material (such as PMMA) by injection molding. The bottom surface is printed with a micro network structure (such as dots or V-shaped grooves) with a specific distribution rule through precise processing. When the light emitted by the LED light source enters the light guide plate from the side, it will propagate forward inside by total reflection. These pre-designed micro structures will break the total reflection condition, efficiently and uniformly scattering light from the front, thereby providing a uniform brightness and glare-free surface light source for the liquid crystal panel (LCD), achieving the design of ultra-thin display, low power consumption and uniform backlight effect.

[0003] At present, common light guide plates include plastic light guide plates and glass-based light guide plates. Among them, the plastic light guide plate is basically made of resin material. Due to the characteristics of the resin material, the plastic light guide plate substrate has a high cost, and is prone to thermal expansion and contraction. Moreover, due to its poor heat resistance, long-term contact with heat-emitting lamp beads can easily cause the plastic light guide plate to appear a hot melting phenomenon on the light entering side, causing the light guide plate to appear yellowing and blackening, reducing the backlight intensity and service life.

[0004] The main component of the glass-based light guide plate is silicon dioxide, which is easy to obtain and has a relatively low cost. Compared with the plastic light guide plate, it has good heat resistance and long service life. However, the processing difficulty of the glass light guide plate is relatively high. The surface processing of the glass light guide plate usually adopts laser processing. Due to the characteristics of the glass material, single laser processing will first damage the surface stress of the glass, but due to the existence of the fiber reinforced structure, single laser processing is prone to cause thermal stress cracks on the surface of the glass. At the same time, in single laser processing, almost all the carbon dioxide laser is absorbed by the glass surface, resulting in a small structure depth and low optical gray scale, i.e. the dot has a small depth-width ratio, resulting in low light guide efficiency of the dot. SUMMARY

[0005] The present application provides a composite processing equipment and processing method based on double lasers, which can solve the problem of the existing laser processing that the processing quality cannot meet the use requirements.

[0006] The purpose of the present application can be achieved by the following technical solutions: The application provides a double-laser-based composite machining device, which comprises the following components. A carrying platform for carrying a product to be machined; A machining platform above the carrying platform; A focusing mirror fixedly arranged on the machining platform; A driving mechanism for driving the relative movement of the machining platform and the carrying platform; A light source assembly for intermittently providing a laser machining light beam; An adjusting mirror set for adjusting the direction of the laser machining light beam emitted by the light source assembly so that the laser machining light beam enters the focusing mirror; The light source assembly comprises a first laser source for intermittently emitting a first light beam and a second laser source for intermittently emitting a second light beam; the first light beam and the second light beam are projected on the surface of the product to be machined after passing through the focusing mirror, and the position of the first light beam projected on the product to be machined is located at the front end of the movement direction of the machining platform.

[0007] The double-laser-based composite machining device provided by the application has the following beneficial effects, but is not limited thereto. In use, the first laser source and the second laser source in the light source assembly intermittently emit the first light beam and the second light beam, respectively, which are changed in direction by the adjusting mirror set and then projected on the product to be machined on the carrying platform through the focusing mirror, and the machining platform and the carrying platform are driven to move relative to each other by the driving mechanism to complete the machining of the product; based on the same position of the focusing mirror, the position of the first light beam projected on the product to be machined is located at the front end of the movement direction of the machining platform, so that, in the machining process, the first light beam performs primary machining on each dot position on the surface of the product to be machined to make the glass surface hot melt and stress damage; then, the second light beam performs secondary composite machining on each dot position on the surface of the product to be machined after the first light beam; since the dot hot melt produced by the primary machining of the first dot is not completely solidified and the stress of the product surface has been damaged when the second light beam performs machining on the dot, the second light beam can fully play the machining effect to achieve the expected machining purpose and effectively machined the surface dot structure meeting the requirements.

[0008] In one scheme of the application, the driving mechanism comprises a feeding driving assembly and a machining driving assembly; the feeding driving assembly is used to drive the carrying platform to move along a first trajectory; the machining driving assembly is used to drive the machining platform to move along a second trajectory; and the first trajectory intersects with the second trajectory.

[0009] In one scheme of the application, the feeding driving assembly is used to drive the carrying platform to move linearly.

[0010] In one aspect of the present application, the machining driving assembly comprises a first power source for driving the machining platform to rotate.

[0011] In one aspect of the present application, the adjusting mirror set comprises a center mirror and an edge mirror, the center mirror is arranged at the rotation axis of the machining platform, and the laser machining beam is changed direction through the center mirror and the edge mirror and then enters the focusing mirror.

[0012] In one aspect of the present application, the number of the focusing mirror and the edge mirror is multiple, and the focusing mirror and the edge mirror are one-to-one corresponding, and the multiple focusing mirrors and the multiple edge mirrors are uniformly distributed around the center mirror, and the machining platform is provided with a second power source for driving the center mirror to rotate.

[0013] In one aspect of the present application, a lens barrel is fixedly arranged on the machining platform, and the focusing mirror is fixedly arranged in the lens barrel.

[0014] In one aspect of the present application, the first laser source is an ultrafast laser with a wavelength in the range of 266-1080 nm.

[0015] In one aspect of the present application, the second laser source is a carbon dioxide laser.

[0016] The present application also provides a composite machining method based on a double laser, comprising the following steps: Step one: equipment building The equipment comprises a bearing platform, a machining platform, a driving mechanism, a focusing mirror, a light source assembly and an adjusting mirror set. The bearing platform is used for bearing a product to be machined, the machining platform is located above the bearing platform, the driving mechanism is used for driving the machining platform and the bearing platform to move relative to each other, the focusing mirror is fixedly arranged on the machining platform, the light source assembly is used for intermittently providing a laser machining beam, and the adjusting mirror set is used for adjusting the direction of the laser machining beam emitted by the light source assembly so that the laser machining beam enters the focusing mirror. The light source assembly comprises a first laser source for intermittently emitting a first light beam and a second laser source for intermittently emitting a second light beam, the first light beam and the second light beam are projected on the surface of the product to be machined after passing through the focusing mirror, and the position of the first light beam projected on the product to be machined is located at the front end of the moving direction of the machining platform. Step two: product machining First, place the product to be machined on the bearing platform and keep it stable, after the equipment is started, the first light beam and the second light beam emitted by the light source assembly change direction through the adjusting mirror set and then pass through the focusing mirror and irradiate on the bearing platform. The driving mechanism causes the processing platform and the support platform to move relative to each other until the moving trajectory of the focusing lens is on the product to be processed. The processing platform passes over the product to be processed, performing the first row of dot pattern processing on the product. During this processing, intermittent first and second beams, in conjunction with the continuously moving processing platform, process several spaced dots in the first row on the product. Furthermore, because the first beam is projected onto the product at the forefront of the processing platform's movement, when processing the first dot of the first row, the first beam projects onto the first dot on the product, while the second beam's projection point has not yet reached the surface of the product. At this point, the first beam performs initial processing on the first dot, causing the glass surface to heat-melt... Stress-induced damage; when the projection point of the first beam is located at the second dot position after the first beam has moved, the first beam performs initial processing on the second dot; simultaneously, the projection point of the second beam is located at the first dot position, performing secondary composite processing on the first dot; during the processing of the last dot, while the first beam performs initial processing on the last dot, the second beam performs secondary composite processing on the penultimate dot; when the second beam performs secondary composite processing on the last dot, the projection point of the first beam has detached from the product to be processed; after the second beam detaches from the surface of the product to be processed, the processing action of the first row of dots is completed; While the lens barrel is detached from the product to be processed, the support platform moves a specified distance relative to the processing platform. The direction of this specified distance movement intersects with the trajectory of the first row of dots, thereby repeating the processing process of the first row of dots. The second row of dots is then processed on the product to be processed, with the second row of dots parallel to the first row. This process is then repeated to process the third row of dots, the fourth row, and so on on the product to be processed, until the product to be processed is completed. After that, the equipment is stopped, and the processed product is removed.

[0017] Since the technical improvements and beneficial effects of the dual-laser-based composite processing method are at least the same as those of the dual-laser-based composite processing equipment, they will not be described in detail here. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood in conjunction with the following description of the embodiments in conjunction with the accompanying drawings. It is obvious that the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Wherein: Figure 1 This is a schematic diagram of the dot pattern on the surface of a product formed using an ultrafast laser. Figure 2This is a schematic diagram of the dot pattern on the surface of a product formed using a carbon dioxide laser. Figure 3 This is a schematic diagram of the dot arrangement on the surface of the product formed by composite processing according to an embodiment of the present invention; Figure 4 The diagram shows a comparison of the dot structure morphology formed by different processing methods, from left to right: ultrafast laser processing, carbon dioxide laser processing, and the composite processing in the embodiments of this application. Figure 5 This is a three-dimensional structural schematic diagram of the composite processing equipment according to an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 5 Mid-top view of the structure; Figure 7 This is an embodiment of the present invention. Figure 6 Schematic diagram of the structure of section AA in the middle; Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged structural diagram of the location of the intermediate processing platform; Figure 9 This is a schematic diagram of the first beam and the second beam passing through the focusing lens according to an embodiment of the present invention; Figure 10 This is a schematic diagram illustrating the initial processing of the first dot in a single row by the first beam in an embodiment of the present invention; Figure 11 This is a schematic diagram illustrating the secondary composite processing of the last dot in a single row by the second beam in an embodiment of the present invention; Figure 12 This is a schematic flowchart of the composite processing method in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Support platform; 2. Processing platform; 3. Focusing lens; 4. First laser source; 5. First beam; 6. Second laser source; 7. Second beam; 8. Main body of equipment; 9. First power source; 10. First adjustment mirror; 11. Second reflector; 12. Third reflector; 13. Central reflector; 14. Edge reflector; 15. Acousto-optic modulator; 16. Beam dissipator; 17. Dissipation reflector; 18. Second power source. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments of this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0021] Currently, common light guide plates include plastic light guide plates and glass-based light guide plates. Glass light guide plates are often processed using laser processing. Common processing methods include ultrafast laser processing and carbon dioxide laser processing. However, due to the inherent characteristics of lasers and glass plates, both present significant processing challenges.

[0022] In single-processing scenarios, when using an ultrafast laser as the light source, the dot morphology formed on the glass light guide plate is relatively small due to the characteristics of ultrafast lasers. Furthermore, the density requirement is high when designing the dot distribution, and the spacing between adjacent dots is small (e.g., ...). Figure 1 , 4 As shown on the left), the final processing efficiency is low, and the processed light guide plate has high limitations. When using a carbon dioxide laser as the light source, due to the characteristics of the glass material, a single laser processing will first destroy the surface stress of the glass. However, due to the presence of the fiber reinforcement structure, a single laser processing is prone to causing thermal stress cracks on the glass surface. At the same time, since almost all of the carbon dioxide laser is absorbed by the glass surface during a single laser processing, the depth of the processed structure is relatively small (e.g., Figure 2 , 4 As shown in the figure, the optical grayscale is low, that is, the structural depth is small, which makes the dot depth-to-width ratio small, resulting in low dot light guiding efficiency and making it difficult to meet the usage requirements.

[0023] In the case of multiple (two or more) composite processing, due to the characteristics of laser processing, the first processing step typically involves processing a row of several dots on the product each time, then repeating this single-row processing until several rows of dots cover the area to be processed. After the first complete coverage processing of the target area is completed, a primary light guide structure is formed. Then, n repeated processing steps are performed, such as repeating once, twice, three times, four times, etc. Based on the first processing, all primary light guide structures undergo secondary or multiple composite processing, which can effectively improve the surface thermal cracking situation during carbon dioxide laser processing, deepen the structural dimensions, and enhance the light guiding capability. However, using multiple composite processing methods on the same glass plate has the following drawbacks: First, each processing step involves feeding the glass plate; that is, each row needs to be fed once, and there are also feeding processes between different processing steps. Furthermore, there are focus adjustment processes between different processing steps, making the entire processing of the light guide plate cumbersome and inefficient. Second, deviations in processing points between different steps are prone to occur, making it difficult to achieve the positional accuracy of corresponding dots in different processing steps, thus compromising processing precision and quality. Simultaneously, due to the long intervals between processing steps, the dots formed after a single laser processing session undergo cooling and solidification, requiring energy consumption again for subsequent processing, and the presence of molten slag can also affect processing quality.

[0024] To address the aforementioned issues, this application provides a dual-laser-based composite processing equipment and method that effectively improves processing efficiency while ensuring product quality meets usage requirements. It is worth noting that the aforementioned dual-laser-based composite processing equipment and method are developed based on the processing of light-guiding structures on the surface of glass light guide plates. While applicable to the processing of light-guiding structures on glass light guide plates, its core lies in adjusting and redirecting laser processing beams emitted from different light sources, focusing them through a focusing lens 3, and projecting them to different positions on the product surface. Even with the focusing lens 3 in the same position, the projection points of the laser processing beams from different light sources on the product deviate. During the continuous relative movement of the processing platform 2 and the supporting platform 1, the first beam 5 and the second beam 7 sequentially perform composite processing on the same dot at short intervals, thereby ensuring that the processing quality meets expected requirements. Therefore, the aforementioned processing method is not entirely limited to the processing of glass light guide plate products; other similar products using lasers for surface structure processing can also be processed using the aforementioned composite processing equipment and method. In the specific embodiments of this application, only a glass light guide plate is used as an example for illustration, but the scope of protection disclosed in this invention is not limited to this.

[0025] See Figures 3-8This invention provides a dual-laser-based composite processing device, comprising: a support platform 1, a processing platform 2, a driving mechanism, a focusing lens 3, a light source assembly, and an adjustment lens group. The support platform 1 supports the product to be processed. The processing platform 2 is located above the support platform 1. The driving mechanism drives the processing platform 2 to move relative to the support platform 1. The focusing lens 3 is fixedly mounted on the processing platform 2. The light source assembly intermittently provides a laser processing beam. The adjustment lens group adjusts the direction of the laser processing beam emitted by the light source assembly, causing the laser processing beam to enter the focusing lens 3. The light source assembly includes a first laser source 4 that intermittently emits a first beam 5 and a second laser source 6 that intermittently emits a second beam 7. The first beam 5 and the second beam 7 are projected onto the surface of the product to be processed after passing through the focusing lens 3, and the position of the first beam 5 projected onto the product to be processed is located at the front end of the moving direction of the processing platform 2.

[0026] In this embodiment, the first laser source 4 and the second laser source 6 in the light source assembly intermittently emit a first beam 5 and a second beam 7, respectively. After the direction is changed by the adjusting lens group, the beams pass through the focusing lens 3 and are projected onto the product to be processed on the support platform 1. The processing platform 2 and the support platform 1 move relative to each other through the driving mechanism to complete the processing of the product. Based on the same position of the focusing lens 3, since the position of the first beam 5 projected onto the product to be processed is at the front end of the movement direction of the processing platform 2 (e.g., ... Figure 9 As shown), during the processing, the first beam 5 performs initial processing on each dot position on the surface of the product to be processed, causing the glass surface to melt and stress to be broken. Then, the second beam 7 follows the first beam 5 to perform secondary composite processing on each dot position on the surface of the product to be processed. Since the second beam 7 (secondary processing) closely follows the first beam 5 (initial composite processing) in processing the dots, the time interval between the two processing the same dot is short. Therefore, when the second beam 7 processes the dots, the melting of the dots generated by the first dot processing has not been completely solidified, and the surface stress of the product has been broken. Thus, the second beam 7 can fully exert the processing effect, achieve the expected processing purpose, and effectively process a surface dot structure that meets the requirements (such as...). Figure 3 , Figure 4(As shown on the right). On the other hand, since the composite processing of all dots can be completed in one processing on the product, only one feed is needed between adjacent rows. There are no multiple feed actions or focusing required in multiple composite processing, nor are there point deviations between multiple processing operations. Therefore, this device can effectively improve the processing efficiency of the product while ensuring processing quality and accuracy. The interval between two adjacent dots can be achieved by adjusting the relative moving speed between the processing platform 2 and the support platform 1, the intermittent interval of the laser processing beam provided by the light source component, and other factors. The interval between two adjacent dots is consistent with the interval between the projection points of the first beam 5 and the second beam 7 on the product surface, thereby ensuring that when the first beam 5 performs the initial processing on the second (rear) dot, the second beam 7 can simultaneously project onto the first (previous) dot position for secondary composite processing.

[0027] It should be noted that the bearing platform 1 is used to support the product to be processed; and the stability of the workpiece needs to be ensured during the processing, thereby ensuring the processing accuracy of all dots. The stability of the product to be processed can be achieved by fixing it with tooling fixtures, or by setting adsorption holes on the bearing platform 1 to fix the plate-shaped workpiece to be processed by negative pressure adsorption; or by setting the surface of the bearing platform 1 so that the plate-shaped product can be stably statically attached to the bearing platform 1.

[0028] It should be noted that the processing platform 2 is used to move the focusing lens 3 relative to the supporting platform 1 (i.e., the product to be processed), thereby changing the position of the laser processing beam projected onto the product to be processed, so as to process different positions of the product. The processing platform 2 can be a plate-shaped structure, specifically, it can be a circular plate-shaped structure. The light source assembly can be set on the processing platform 2 and move together with it, or the direction of the laser processing beam emitted by the light source can be adjusted by adjusting the assembly, thereby achieving the projection of the laser processing beam onto the supporting platform 1 after passing through the focusing lens 3.

[0029] It should be noted that the drive mechanism is used to drive the machining platform 2 to move relative to the carrier platform 1. The drive mechanism can drive the carrier platform 1 or the machining platform 2 to move in two directions, respectively to realize feed action and single-line machining movement action. The drive mechanism can also drive the carrier platform 1 and the machining platform 2 to move separately, thereby realizing feed action and single-line machining movement action respectively. As an example, the drive mechanism may include a feed drive component (not shown in the figure) and a machining drive component. The feed drive component is used to drive the carrier platform 1 to move along a first trajectory, and the machining drive component is used to drive the machining platform 2 to move along a second trajectory, and the first trajectory and the second trajectory intersect. In use, the carrier platform 1 moves along the first trajectory to feed and adjust the product position, and the machining platform 2 performs single-line machining on the product along the second trajectory; the actions of the first trajectory and the second trajectory can be performed separately or simultaneously to form a compound trajectory movement process of the rotating shaft.

[0030] It should be noted that the supporting platform 1, processing platform 2, drive mechanism, and light source assembly can be respectively arranged at different positions on the main body 8 of the equipment, which serves as a supporting body providing mounting positions. The main body 8 of the equipment can be arranged in layers, such as being divided into an upper space, a middle space, and a lower space, thereby facilitating the layout of each mechanism. As an example, the light source assembly can be arranged in the upper space, the processing platform 2 can be arranged in the middle space, and the supporting platform 1 can be arranged on the bottom plate of the lower space.

[0031] See Figures 5-8 In one embodiment of the present invention, the specific selection of the feed drive component is not limited. As an example, the feed drive component (not shown in the figure) is used to drive the support platform 1 to move linearly, that is, the first trajectory is a linear trajectory. The support platform 1 is slidably mounted on the bottom plate of the equipment body 8 and is used to support the glass plate to be processed; specifically, the support platform 1 can be mounted on the equipment body 8 through a slide rail or slider structure. The specific structure of the feed drive component is not limited and can be a telescopic rod drive structure, a cylinder drive structure, a lead screw drive structure, or a linear motor, etc.

[0032] See Figures 5-8In one embodiment of the present invention, the specific structure of the processing drive component is not limited, and the second trajectory can be a straight line, an oblique line, or an arc-shaped trajectory. As an example, the processing drive component includes a first power source 9, which drives the processing platform 2 to rotate, thereby causing the focusing lens 3 on it to move relative to the supporting platform 1. At this time, the mark left by the second trajectory on the supporting platform 1 (the product to be processed) is an arc-shaped line, that is, after each pass over the product, a row of arc-shaped, spaced dots is processed on the product. The specific structure of the first power source 9 is not limited; the first power source 9 can be a motor or other structures as needed.

[0033] See Figures 5-8 In one embodiment of the present invention, it should be noted that the specific implementation method of the positional deviation of the first beam 5 and the second beam 7 projected on the support platform 1 can be selected as needed. As an example, the optical paths of the first beam 5 and the second beam 7 can be controlled by adjusting the lens group, thereby controlling the first beam 5 and the second beam 7 to enter from different positions of the focusing lens 3. Then, the distance between the focusing lens 3 and the support platform 1 (i.e., the focal length of the focusing lens 3) can be adjusted. For example, the first beam 5 can enter from a position off-center of the focusing lens 3, and its direction will be changed after passing through the focusing lens 3. The second beam 7 enters through the center position of the focusing lens 3, and its direction will not change after passing through the focusing lens 3, thereby achieving the positional difference of the projection points of the first beam 5 and the second beam 7. As another example, the contour shape of the focusing lens 3 can be specifically designed so that the angles of refraction of the first beam 5 and the second beam 7 are different, thereby achieving the deviation of the projection positions of the first beam 5 and the second beam 7 on the support platform 1. Meanwhile, as another example, while ensuring that the second beam 7 still enters through the center (the second beam 7 does not necessarily have to enter from the center, as long as the projection points of the two laser processing beams are offset), the optical path of the first beam 5 can be controlled by adjusting the lens group, so that the first beam 5 and the second beam 7 enter the focusing lens 3 at different angles, causing a positional difference in the projection points of the two laser processing beams on the support platform 1 (e.g., Figure 9 (As shown). Alternatively, the height of the laser processing beam emitted from different light sources can be adjusted to different heights, so that after being redirected, it will enter from different positions of the focusing lens 3.

[0034] See Figures 5-8In one embodiment of the present invention, the first laser source 4 and the second laser source 6 can be selected as needed. It should be noted that the first laser source 4 and the second laser source 6 need to use laser structures with different wavelengths. As a preferred example, the first laser source 4 is an ultrafast laser with a wavelength in the range of 266~1080nm, and the second laser source 6 is a carbon dioxide laser. When the first laser source 4 is an ultrafast laser, the first beam 5 can form a smaller and relatively deeper dot structure morphology (e.g., ...) on the product surface during the initial processing of the dots. Figure 4 As shown on the left), during the subsequent processing with the second beam 7, the structural morphology can be effectively expanded based on the initial processing, thereby obtaining a better dot structure morphology after composite processing (such as...). Figure 3 , Figure 4 (As shown on the right).

[0035] See Figures 5-8 In one embodiment of the present invention, the adjusting mirror group may include several adjusting mirrors for adjusting the optical path of the laser processing beam. Their specific arrangement can be configured according to actual needs. For example, they can all be set on the processing platform 2, moving with the processing platform 2; or they can be partially set on the main body 8 and partially on the processing platform 2, as long as the laser processing beam can ultimately be projected onto the supporting platform 1 for product processing. As an example, the adjusting mirror group includes a first adjusting mirror 10, a second reflecting mirror 11, a third reflecting mirror 12, a central reflecting mirror 13, and an edge reflecting mirror 14. The first adjusting mirror 10 is an inclined, semi-transparent, semi-reflective beam splitter, so that the first beam 5 changes direction after being reflected by the first adjusting mirror 10 and enters the subsequent optical path, and the second beam 7 enters the subsequent optical path after passing through the first adjusting mirror 10. The central reflecting mirror 13 is located at the rotation axis of the processing platform 2, and the laser processing beam sequentially passes through the second reflecting mirror 11, the third reflecting mirror 12, the central reflecting mirror 13, and the edge reflecting mirror 14 before changing direction and entering the focusing mirror 3. Among them, the second reflector 11, the third reflector 12, the central reflector 13, and the edge reflector 14 are all dual-wavelength reflectors, which can realize the reflection of two wavelengths of lasers: carbon dioxide laser and ultrafast laser.

[0036] See Figures 5-7In one embodiment of the present invention, the light source assembly may further include an acousto-optic modulator 15 and a beam diffuser 16. The acousto-optic modulator 15 operates intermittently. When the acousto-optic modulator 15 is operating, the laser processing beam emitted from the second laser source 6 (carbon dioxide laser) is deflected when passing through the acousto-optic modulator 15, and then its optical path direction is changed by a light source reflector before entering the adjustment mirror group. When the acousto-optic modulator 15 is not operating, the angle of the laser processing beam does not change when passing through the acousto-optic modulator 15, and the laser processing beam cannot enter the adjustment mirror group, thus achieving intermittent provision of the laser processing beam. When the first laser source 4 is an ultrafast laser, it can be configured as a complete unit capable of intermittently emitting a laser processing beam. The configuration of the first laser source 4 can also be similar to that of the second laser source 6, using the acousto-optic modulator 15 and the beam diffuser 16 in combination to provide an intermittent laser processing beam.

[0037] See Figures 5-6 In one embodiment of the present invention, a dissipation mirror 17 may also be provided. The dissipation mirror 17 is positioned between the light source reflector and the first adjustment mirror 10. When the acousto-optic modulator 15 is working, the second beam 7 deflects horizontally after passing through the crystal inside the acousto-optic modulator 15, becoming a "1" beam. Then, after changing direction via the light source reflector, it directly illuminates the first adjustment mirror 10, and then, after passing through the first adjustment mirror 10, it illuminates the second reflector 11. When the acousto-optic modulator 15 is not working, the laser processing beam does not change angle when passing through the crystal inside the acousto-optic modulator 15, becoming a "0" beam. Then, after being reflected by the light source reflector and changing direction, it directly illuminates the dissipation mirror 17, and then, after changing direction, it enters the beam dissipator 16, thereby carrying away the energy.

[0038] See Figures 5-8In one embodiment of the present invention, it should be noted that a lens barrel can be fixedly mounted on the processing platform 2, and the focusing lens 3 is fixedly mounted inside the lens barrel. The lens barrel provides a mounting position for the focusing lens 3, ensuring the stability of the focusing lens 3. The lens barrel can be fixedly mounted on the bottom surface of the turntable, and at least one focusing lens is disposed inside the lens barrel. There can be multiple lens barrels and edge reflectors 14, with multiple lens barrels evenly distributed along the circumference of the turntable, and each lens barrel (focusing lens 3) corresponding one-to-one with an edge reflector 14. A second power source 18 can be disposed at the center of the turntable, and the second power source 18 drives and connects to the central reflector 13, and is used to drive the central reflector 13 to rotate. During use, the turntable rotates continuously. The central reflector 13 initially faces the first lens barrel. When the first lens barrel rotates above the glass plate, it performs laser processing on the glass plate. When the first lens barrel detaches from the glass plate, the second power source 18 drives the beam splitter frame to rotate, causing it to face the next (second) lens barrel in the direction of the turntable's rotation. When the second lens barrel rotates above the glass plate, it can process the glass plate through its corresponding arm. This process repeats, with multiple lens barrels (arms) arranged circumferentially working sequentially to efficiently process the glass plate. Because a single lens barrel is idle after detaching from the glass plate, this would affect the processing efficiency. By setting multiple lens barrels, each equipped with a corresponding edge reflector 14 and working in conjunction with the rotatable central reflector 13, multiple processing arms can be formed. These processing arms work sequentially as the platform 1 rotates, reducing the idle time during processing and effectively improving the processing efficiency of the product.

[0039] See Figures 5-12 In another embodiment of this application, a composite processing method based on dual lasers is also provided. This processing method can be based on the aforementioned composite processing equipment, but it is not limited to using only the aforementioned composite processing equipment. Specifically, the composite processing method includes the following steps: Step 1: Equipment Setup The equipment includes a support platform 1, a processing platform 2, a drive mechanism, a focusing lens 3, a light source assembly, and an adjustment lens group; The carrier platform 1 is used to carry the product to be processed; the processing platform 2 is located above the carrier platform 1; the driving mechanism is used to drive the processing platform 2 to move relative to the carrier platform 1; the focusing lens 3 is fixedly mounted on the processing platform 2; the light source assembly is used to intermittently provide a laser processing beam; the adjusting lens group is used to adjust the direction of the laser processing beam emitted by the light source assembly so that the laser processing beam enters the focusing lens 3. The light source assembly includes a first laser source 4 that intermittently emits a first beam 5 and a second laser source 6 that intermittently emits a second beam 7; the first beam 5 and the second beam 7 are projected onto the surface of the product to be processed after passing through the focusing lens 3, and the position of the first beam 5 projected onto the product to be processed is located at the front end of the processing platform 2 in the direction of movement (e.g., ...). Figure 9 (as shown) Step Two: Product Processing First, place the product to be processed on the carrier platform 1 and keep it stable. After the equipment is started, the first beam 5 and the second beam 7 emitted by the light source assembly change direction through the adjusting lens group and then pass through the focusing lens 3 to illuminate the carrier platform 1. The driving mechanism causes the processing platform 2 to move relative to the carrying platform 1 until the moving trajectory of the focusing lens 3 is on the product to be processed; The processing platform 2 passes over the product to be processed and performs the first row of dot processing on the product. During this processing, the intermittent first beam 5 and second beam 7 work in conjunction with the continuously moving processing platform 2 to process a number of spaced dots in the first row on the product. Furthermore, since the position of the first beam 5 projected onto the product is at the front end of the moving direction of the processing platform 2, when processing the first dot of the first row (e.g....) Figure 10 As shown), the first beam 5 is projected onto the product to be processed at the position of the first halftone dot, while the projection point of the second beam 7 has not yet reached the surface of the product (at this time, the controller can also control the second laser source 6 to not emit light; specifically, a sensor can be set to monitor the specific position of the focusing lens 3, and when the focusing lens 3 is above the product, the corresponding light source laser is controlled to emit light). At this time, the first beam 5 performs initial processing on the first halftone dot, causing the glass surface to melt and stress to break; when the projection point of the first beam 5 is located at the position of the second halftone dot after the first beam 5 has moved, the first beam 5 performs initial processing on the second halftone dot; at the same time, the projection point of the second beam 7 is located at the position of the first halftone dot, and performs secondary composite processing on the first halftone dot; during the processing of the last halftone dot, while the first beam 5 performs initial processing on the last halftone dot, the second beam 7 performs secondary composite processing on the second-to-last halftone dot; when the second beam 7 performs secondary composite processing on the last halftone dot (as shown in the image), the second beam 7 performs secondary composite processing on the second-to-last halftone dot. Figure 11 As shown), at this time, the projection point of the first beam 5 has been removed from the product to be processed (at this time, the first laser source 4 can also be controlled to not emit light); after the second beam 7 leaves the surface of the product to be processed, the processing action of the first row of dots is completed. While the lens barrel is detached from the product to be processed, the support platform 1 moves a specified distance relative to the processing platform 2. The direction of movement of the specified distance intersects with the trajectory of the first row of dots, thereby repeating the processing process of the first row of dots. The second row of dots is then processed on the product to be processed, with the second row of dots parallel to the first row of dots. This process is then repeated to process the third row of dots, the fourth row of dots, and so on on the product to be processed, until the product to be processed is completed. After that, the equipment (light source assembly) is stopped, and the processed product is removed.

[0040] Since the technical improvements and beneficial effects of the dual-laser-based composite processing method are at least the same as those of the dual-laser-based composite processing equipment, they will not be described in detail here.

[0041] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0046] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

Claims

1. A composite processing device based on dual lasers, characterized in that, include: A carrying platform (1) is used to carry the product to be processed; A processing platform (2) is located above the support platform (1); A focusing lens (3) is fixedly mounted on the processing platform (2); A drive mechanism is provided for driving the machining platform (2) to move relative to the support platform (1); A light source assembly for intermittently providing a laser processing beam; Adjustment mirror group, the adjustment mirror group is used to adjust the direction of the laser processing beam emitted by the light source assembly so that the laser processing beam enters the focusing mirror (3). The light source assembly includes a first laser source (4) that intermittently emits a first beam (5) and a second laser source (6) that intermittently emits a second beam (7); the first beam (5) and the second beam (7) are projected onto the surface of the product to be processed after passing through the focusing lens (3), and the position of the first beam (5) projected onto the product to be processed is located at the front end of the moving direction of the processing platform (2).

2. The composite processing equipment based on dual lasers according to claim 1, characterized in that, The driving mechanism includes a feed driving component and a machining driving component. The feed driving component is used to drive the carrier platform (1) to move along a first trajectory, and the machining driving component is used to drive the machining platform (2) to move along a second trajectory, wherein the first trajectory and the second trajectory intersect.

3. The composite processing equipment based on dual lasers according to claim 2, characterized in that, The feed drive component is used to drive the carrier platform (1) to move linearly.

4. The composite processing equipment based on dual lasers according to claim 2, characterized in that, The processing drive assembly includes a first power source (9), which is used to drive the processing platform (2) to rotate.

5. The composite processing equipment based on dual lasers according to claim 4, characterized in that, The adjustment mirror group includes a central reflector (13) and an edge reflector (14). The central reflector (13) is located at the rotation axis of the processing platform (2). The laser processing beam is redirected by the central reflector (13) and the edge reflector (14) and then enters the focusing lens (3).

6. The composite processing equipment based on dual lasers according to claim 5, characterized in that, The number of the focusing mirror (3) and the edge mirror (14) are both multiple, and the focusing mirror (3) and the edge mirror (14) correspond one-to-one. The multiple focusing mirrors (3) and edge mirrors (14) are evenly distributed around the central mirror (13). The processing platform (2) is provided with a second power source (18) for driving the central mirror (13) to rotate.

7. The composite processing equipment based on dual lasers according to claim 6, characterized in that, A lens barrel is fixedly installed on the processing platform (2), and the focusing lens (3) is fixedly installed inside the lens barrel.

8. The composite processing equipment based on dual lasers according to claim 1, characterized in that, The first laser source (4) is an ultrafast laser with a wavelength in the range of 266~1080nm.

9. The composite processing equipment based on dual lasers according to claim 1, characterized in that, The second laser source (6) is a carbon dioxide laser.

10. A composite processing method based on dual lasers, characterized in that, Includes the following steps: Step 1: Equipment Setup The equipment includes a support platform (1), a processing platform (2), a drive mechanism, a focusing lens (3), a light source assembly, and an adjustment lens group; The carrier platform (1) is used to carry the product to be processed; the processing platform (2) is located above the carrier platform (1); the driving mechanism is used to drive the processing platform (2) to move relative to the carrier platform (1); the focusing lens (3) is fixedly installed on the processing platform (2); the light source assembly is used to intermittently provide a laser processing beam; the adjusting lens group is used to adjust the direction of the laser processing beam emitted by the light source assembly so that the laser processing beam enters the focusing lens (3). The light source assembly includes a first laser source (4) that intermittently emits a first beam (5) and a second laser source (6) that intermittently emits a second beam (7); the first beam (5) and the second beam (7) are projected onto the surface of the product to be processed after passing through the focusing lens (3), and the position of the first beam (5) projected onto the product to be processed is located at the front end of the moving direction of the processing platform (2); Step Two: Product Processing First, place the product to be processed on the carrier platform (1) and keep it stable. After the equipment is started, the first beam (5) and the second beam (7) emitted by the light source assembly change direction through the adjustment lens group and pass through the focusing lens (3) to irradiate the carrier platform (1). The driving mechanism causes the processing platform (2) to move relative to the carrying platform (1) until the moving trajectory of the focusing lens (3) is on the product to be processed; The processing platform (2) passes over the product to be processed and performs the first row of dot processing on the product. During the processing of the first row of dots, the intermittent first beam (5) and second beam (7) work together with the continuously moving processing platform (2) to process several interval dots in the first row on the product. Furthermore, since the position of the first beam (5) projected onto the product is at the front end of the moving direction of the processing platform (2), when processing the first dot of the first row, the first beam (5) is projected onto the position of the first dot on the product, while the projection point of the second beam (7) has not yet reached the surface of the product. At this time, the first beam (5) performs the initial processing on the first dot, making the glass surface... Surface heat melting and stress damage; when the projection point of the first beam (5) is located at the position of the second dot after the first beam (5) moves, the first beam (5) performs initial processing on the second dot; at the same time, the projection point of the second beam (7) is located at the position of the first dot, and performs secondary composite processing on the first dot; during the processing of the last dot, while the first beam (5) performs initial processing on the last dot, the second beam (7) performs secondary composite processing on the second to last dot; when the second beam (7) performs secondary composite processing on the last dot, the projection point of the first beam (5) has detached from the product to be processed; after the second beam (7) detaches from the surface of the product to be processed, the processing action of the first row of dots is completed; During the period when the lens barrel is detached from the product to be processed, the support platform (1) moves a specified distance relative to the processing platform (2), and the direction of movement of the specified distance intersects with the trajectory of the first row of dots, thereby repeating the processing process of the first row of dots. The second row of dots is processed on the product to be processed, and the second row of dots is parallel to the first row of dots. Then this process is repeated to process the third row of dots, the fourth row of dots, etc. on the product to be processed until the product to be processed is completed. After that, the equipment is stopped and the processed product is removed.

Images