Laser marking device and method

Abstract

The embodiment of the invention discloses a laser marking device and method. The device comprises a movable positioning module, a laser marking module and an adsorption fixing module. The laser marking module is in sliding connection with the movable positioning module and is driven by the movable positioning module to ascend and descend. The adsorption fixing module comprises an adsorption fixing assembly and a first driving assembly, one end of the first driving assembly is fixedly connected with the laser marking module, the other end of the first driving assembly is connected with the adsorption fixing assembly in a matched mode to drive the adsorption fixing assembly to ascend and descend, and the adsorption fixing assembly adsorbs and fixes a to-be-marked glass battery piece marking area. The to-be-marked glass battery piece extends in the horizontal direction; the laser marking module is connected with the mobile positioning module and is driven by the mobile positioning module to ascend and descend so as to perform primary positioning; the adsorption fixing assembly is driven by the first driving assembly to ascend and descend so as to conduct secondary positioning on the adsorbed and fixed glass battery piece to be marked. Coarse positioning and fine positioning are combined, the flatness and focal depth of a marking area of a product can be accurately adjusted, and the flatness requirement of high-precision laser marking is met.

Description

Technical Field

[0001] The present invention relates to the technical field of laser marking equipment, and in particular to a laser marking device and method. Background Art

[0002] The current photovoltaic glass cell is usually 2-4mm thick and has a plane size of 2000 1000mm, 2000 1600mm, 2400 1200mm, thin thickness, large size, there is a warping problem in the natural state, that is, the thickness direction of the glass cell is not an ideal plane, and its local warping can reach ±0.3mm / 300mm or even larger. This is not allowed in high-precision automation equipment, especially in the field of high-precision laser marking equipment. Due to the short focal depth of laser marking, the optimal working range in the thickness direction is often required to be within 0.1~0.5mm. At this time, the flatness of the product in the thickness direction (Z direction) of the working area must reach ±0.05mm or even smaller to ensure the quality of its marking.

[0003] Currently, there is a method for leveling glass cells. The solution adopted is to evenly distribute the shaping platform + evenly distribute the suction cups evenly on the entire XY surface of the product. The entire product is laid flat on the shaping platform by suction cups. The high-precision Z-axis module is used to lift the laser to adjust the distance between the laser focal plane and the product so that its focal depth is within an appropriate range.

[0004] Although the method of leveling the entire product can also achieve the overall Z-direction leveling of the product, due to the large format of the product, if a whole shaping platform is used, not only is it difficult to achieve the processing flatness requirements, but the price is also high; if multiple evenly distributed shaping platforms are used, it is necessary to debug the flatness and adjust the height of each shaping platform, and the debugging cost and operation difficulty will increase proportionally. The use of a high-precision Z-axis module to lift the laser to adjust the distance between the laser focal plane and the product can complete the laser marking operation to a certain extent, but on the one hand, due to the deviation of the positioning accuracy and repeat positioning accuracy of the Z-axis module itself, it fails to form a real-time closed-loop feedback with the product spacing during Z-direction movement; on the other hand, due to the certain deviations in the shaping platform manufacturing process and installation and debugging process, and there are also deviations between different products, these deviations also fail to form a closed-loop feedback with the Z-axis module. This is not feasible in situations where high laser marking accuracy is required. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a laser marking device and method to solve the problem that large glass cell sheets are partially warped due to their thin thickness and large size, and the laser marking accuracy is poor due to their poor flatness during laser marking.

[0006] In a first aspect, the present invention provides a laser marking device, the laser marking device comprising: a mobile positioning module, a laser marking module and an adsorption fixing module; The laser marking module is slidably connected to the mobile positioning module and is driven to rise and fall by the mobile positioning module; The adsorption and fixing module includes an adsorption and fixing component and a first driving component. The first driving component is installed on the laser marking module. The driving end of the first driving component is matched with the adsorption and fixing component to drive the adsorption and fixing component to rise and fall. The adsorption and fixing component adsorbs and fixes the marking area of ​​the glass cell sheet to be marked. The glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component extends in the horizontal direction. The laser marking module is configured to be connected to the mobile positioning module and driven to rise and fall by the mobile positioning module to perform a primary positioning of the glass cell piece to be marked; the adsorption and fixing component is configured to be driven to rise and fall by the first driving component to perform a secondary positioning of the adsorbed and fixed glass cell piece to be marked.

[0007] In some embodiments, the mobile positioning module includes a base, a mobile shaft and a second driving component; The movable shaft is vertically mounted on the base, and the laser marking module is slidably connected to the movable shaft; The second driving assembly is installed at the end of the movable shaft, and the second driving assembly is configured to be matched with the laser marking module to drive the laser marking module to slide and rise and fall on the movable shaft.

[0008] In some embodiments, the mobile positioning module further includes a guide component; The guide assembly comprises at least two slide rails fixed on the base, wherein the at least two slide rails are parallel to the moving axis and symmetrically distributed on both sides of the moving axis; The laser marking module is slidably connected to each of the slide rails.

[0009] In some embodiments, the laser marking device further includes a control module, the mobile positioning module further includes a first displacement sensing component, and the control module is respectively connected to the first displacement sensing component and the second driving component by signals; The first displacement sensing component is installed on the side of the moving shaft, and the first displacement sensing component is configured to monitor in real time the position data of the glass cell sheet to be marked adsorbed on the adsorption fixing component fixedly connected to the laser marking module, and transmit the position data signal to the control module; The control module is configured to: control the second driving component to drive the laser marking module to rise and fall based on the received position data, so as to adjust the focal depth of the laser marking module in the vertical direction of the glass cell to be marked.

[0010] In some embodiments, the laser marking module includes a mounting base and a laser assembly; The mounting seat is slidably connected to the movable positioning module, and the laser assembly is fixed on the mounting seat; The adsorption and fixing module is connected to the end of the laser marking module, and the laser emitting end of the laser assembly faces the bottom surface of the glass cell to be marked which is adsorbed and fixed on the adsorption and fixing module.

[0011] In some embodiments, the laser assembly includes a laser, a collimating mirror, and a galvanometer; The laser is fixed on the mounting base, and the laser is configured to provide a laser source; One end of the collimator is connected to the emission end of the laser, and the collimator is configured to convert the laser beam emitted by the laser into a parallel beam; The other end of the collimating mirror is connected to the galvanometer, and the galvanometer is configured to provide marking compatibility on a marking format for laser marking. The glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing module is located above the galvanometer.

[0012] In some embodiments, the laser marking module further includes a dust collection component, and the dust collection component is installed at the laser marking location of the laser marking module; The dust collection assembly is configured to collect dust generated during the marking process.

[0013] In some embodiments, the dust collection assembly includes a dust collection head and an air knife; The dust collecting head is fixedly connected to the galvanometer, and the dust collecting head is configured to collect dust generated during the marking process; The wind knife is fixedly connected to the dust collecting head, and the wind knife is configured to blow away the dust remaining on the surface of the galvanometer.

[0014] In some embodiments, the dust collecting head wraps the galvanometer and one end of the dust collecting head is fixed to the end surface of the galvanometer; An opening flush with the outer peripheral surface of the galvanometer is provided on the circumferential surface of the dust collecting head, and the wind knife is installed at the opening, with the air outlet of the wind knife facing the galvanometer.

[0015] In some embodiments, the adsorption and fixing assembly includes a mounting member, a suction cup and a suction cup pipe joint, the mounting member and the first driving assembly are matched to be driven by the first driving assembly, the suction cup and the suction cup pipe joint are both mounted on the mounting member, and the suction cup is communicated with the suction cup pipe joint; The suction cup is configured to absorb the marking area of ​​the glass cell to be marked, and pull the glass cell to be marked down to the top surface of the mounting member, and the top surface of the mounting member is configured as a Z-direction local shaping reference surface for the glass cell to be marked.

[0016] In some embodiments, the laser marking device further includes a control module, the adsorption and fixing module includes a second displacement sensing component, and the control module is respectively connected to the second displacement sensing component and the first driving component by signals; The second displacement sensing component is configured to monitor in real time the distance between the light-emitting surface of the laser marking module and the glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component, and to feed back the distance to the control module; The control module is configured to: based on the distance, control the first driving component to drive the adsorption and fixing component to move the focal plane of the marking area of ​​the glass cell sheet to be marked.

[0017] In a second aspect, the present invention further provides a laser marking method, using the laser marking device as described in the first aspect, the method comprising: After the glass cell to be marked is placed in a preset position in the laser marking device, the adsorption and fixing component is started so that the adsorption and fixing component adsorbs and fixes the marking area of ​​the glass cell to be marked; Controlling the mobile positioning module to drive the laser marking module to move to a first position for rough positioning; The first driving component is controlled to drive the adsorption fixing module to move to the second position for precise positioning.

[0018] In some embodiments, controlling the mobile positioning module to drive the laser marking module to move to the first position for rough positioning includes: Acquire the position data of the glass cell to be marked based on the first displacement sensing component in the mobile positioning module; Based on the position data, the mobile positioning module is controlled to drive the laser marking module to rise and fall, so as to adjust the focal depth of the laser marking module in the vertical direction of the glass cell to be marked; The controlling the first driving component to drive the adsorption fixing module to move to the second position for precise positioning includes: Acquiring the distance between the light-emitting surface of the laser marking module and the glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component based on the second displacement sensing component; Based on the distance, the first driving component is controlled to drive the adsorption and fixing component to move the focal plane of the marking area of ​​the glass cell sheet to be marked.

[0019] One or more of the above embodiments of the present invention have at least the following beneficial effects: The present invention provides a laser marking device and method, the device comprising: a mobile positioning module, a laser marking module and an adsorption and fixing module; the laser marking module is slidably connected to the mobile positioning module and driven to rise and fall by the mobile positioning module; the adsorption and fixing module comprises an adsorption and fixing component and a first driving component, one end of the first driving component is fixedly connected to the laser marking module, and the other end is matched with the adsorption and fixing component to drive the adsorption and fixing component to rise and fall, the adsorption and fixing component adsorbs and fixes a marking area of ​​a glass battery sheet to be marked, and the glass battery sheet to be marked adsorbed and fixed by the adsorption and fixing component extends in a horizontal direction; the laser marking module is configured to be connected to the mobile positioning module and driven to rise and fall by the mobile positioning module to perform a primary positioning on the glass battery sheet to be marked; the adsorption and fixing component is configured to be driven to rise and fall by the first driving component to perform a secondary positioning on the adsorbed and fixed glass battery sheet to be marked; the two-positioning method is adopted to replace the single Z-direction lifting and positioning, and the rough positioning is combined with the fine positioning, so that the flatness and focal depth of the product marking area can be accurately adjusted to meet the flatness requirements of high-precision laser marking.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In addition, similar numbers in the figures are used to represent similar components, among which: Figure 1 is a three-dimensional diagram of a laser marking device provided by one embodiment of the present invention; Figure 2 It is a schematic diagram of the setting position of the first displacement sensing component in the laser marking device provided by one embodiment of the present invention; Figure 3 It is a structural schematic diagram of a laser marking module in a laser marking device provided in one embodiment of the present invention; Figure 4 It is a structural schematic diagram of a laser component in a laser marking device provided by one embodiment of the present invention; Figure 5 is a flow chart of a laser marking method provided by one embodiment of the present invention; Figure 6 It is a flow chart of a preferred method of the laser marking method provided in one embodiment of the present invention.

[0022] Wherein: 100, mobile positioning module; 110, base; 120, moving axis; 130, second drive component; 140, guide component; 141, slide rail; 150, first displacement sensing component; 200, laser marking module; 210, mounting seat; 220, laser component; 221, laser; 222, collimator; 223, galvanometer; 230, dust collection component; 231, dust collection head; 232, wind knife; 233, dust blowing pipe joint; 234, dust collector; 300, adsorption and fixing module; 310, adsorption and fixing component; 311, mounting piece; 312, suction cup; 313, suction cup pipe joint; 320, first drive component; 330, second displacement sensing component; 400, drag chain component; 410, drag chain mounting plate; 420, drag chain. DETAILED DESCRIPTION

[0023] Some embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0024] As described in the background technology, photovoltaic glass cells are currently thin and large in size, and have warping problems in their natural state. During high-precision laser marking, due to the focal depth of laser marking, the flatness requirements of the marked object are extremely high, and warped glass cells are difficult to meet the flatness requirements of high-precision laser marking. Currently, there is also a method for leveling glass cells. The solution is to lay the entire glass cell product flat on a shaping table and level the entire product. However, due to the large format of the glass cell, the cost of the entire shaping table is extremely high, and the use of multiple dispersed shaping platforms will greatly increase the debugging cost and operation difficulty of multiple shaping platforms.

[0025] To solve the above problems, the present invention creatively proposes a laser marking device and method, in which an adsorption and fixing module for adsorbing and fixing a glass cell sheet is fixedly connected to a laser marking module. The laser marking module first adjusts its distance from the glass cell sheet under the drive of a mobile positioning module to perform large-step and fast coarse positioning, and then drives the adsorption and fixing component for adsorbing the glass cell sheet to move through the first driving component in the adsorption and fixing module to adjust the distance between the laser marking module and the product again to perform small-step fine-tuning fine positioning. By combining coarse positioning with fine positioning, the focal depth of the marking area of ​​the glass cell sheet is adjusted through the two positionings, so that the marking area of ​​the glass cell sheet meets the flatness requirement of high-precision laser marking.

[0026] The present invention will be described in detail below through specific embodiments.

[0027] Embodiment 1: This embodiment provides a laser marking device, referring to Figure 1 As shown, the laser marking device includes: a mobile positioning module 100, a laser marking module 200 and an adsorption fixing module 300; The laser marking module 200 is slidably connected to the mobile positioning module 100 and is driven to rise and fall by the mobile positioning module 100; The adsorption and fixing module 300 includes an adsorption and fixing component 310 and a first driving component 320. The first driving component 320 is installed on the laser marking module 200. The driving end of the first driving component 320 is matched with the adsorption and fixing component 310 to drive the adsorption and fixing component 310 to rise and fall. The adsorption and fixing component 310 adsorbs and fixes the marking area of ​​the glass cell sheet to be marked. The glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component 310 extends in the horizontal direction. The laser marking module 200 is configured to be connected to the mobile positioning module 100 and driven to rise and fall by the mobile positioning module 100 to perform a primary positioning of the glass cell to be marked; the adsorption and fixing component 310 is configured to be driven to rise and fall by the first driving component 320 to perform a secondary positioning of the adsorbed and fixed glass cell to be marked.

[0028] In some embodiments, the mobile positioning module 100 includes a base 110 , a mobile shaft 120 , and a second driving assembly 130 ; The movable shaft 120 is vertically mounted on the base 110, and the laser marking module is slidably connected to the movable shaft; The second driving assembly 130 is mounted on the end of the moving shaft 120, and the second driving assembly 130 is configured to be matched with the laser marking module 200 to drive the laser marking module 200 to slide and rise and fall on the moving shaft 120. By sliding and rising the laser marking module 200 on the moving shaft 120, it is possible to implement the limitation of the moving direction of the laser marking module 200 by the setting of the moving shaft 120, thereby implementing the distance in the Z direction between the laser marking module 200 and the glass cell to be marked adsorbed and fixed by the adsorption fixing module 300 fixed on the laser marking module 200. The second driving assembly 130 can be a servo motor, a cylinder or any other assembly or device that can drive the laser marking module 200 to slide and rise and fall on the moving shaft 120, and this embodiment does not specifically limit this. Exemplarily, the second driving assembly 130 is a servo motor, which is mounted on the end of the movable shaft 120 through a flange, and its driving end is matched with the laser marking module 200 to provide power for the sliding of the laser marking module 200 on the movable shaft 120 .

[0029] Preferably, the mobile positioning module 100 further includes a guide assembly 140; The guide assembly 140 includes at least two slide rails 141 fixed on the base 110, and the at least two slide rails 141 are parallel to the moving axis 120 and symmetrically distributed on both sides of the moving axis 120; The laser marking module 200 is slidably connected to each of the slide rails 141. By symmetrically arranging the slide rails 141 parallel to the moving shaft 120 on both sides of the moving shaft 120, each slide rail 141 is slidably connected to the laser marking module 200, which can share the load and torque of the moving shaft 120 and guide and stabilize the lifting of the laser marking module 200.

[0030] In some embodiments, reference Figure 1 and Figure 2 As shown, the laser marking device further includes a control module (not shown), the mobile positioning module 100 further includes a first displacement sensing component 150, and the control module is respectively connected to the first displacement sensing component 150 and the second driving component 130 by signals; The first displacement sensing component 150 is installed on the side of the moving shaft 120, and the first displacement sensing component 150 is configured to monitor in real time the position data of the glass cell to be marked adsorbed on the adsorption fixing component 310 fixedly connected to the laser marking module 200, and transmit the position data signal to the control module; The control module is configured to: control the second driving assembly 130 to drive the laser marking module 200 to rise and fall based on the received position data, so as to adjust the focal depth of the laser marking module 200 in the vertical direction of the glass cell to be marked.

[0031] Specifically, refer to Figure 2 As shown, a sliding block is slidably installed on the moving shaft 120, and the laser marking module 200 is fixed on the sliding block. A sensing piece matching the first displacement sensing component 150 is installed on the sliding block. There are three groups of first displacement sensing components 150, which provide the mobile positioning module 100 with near-travel limit, far-travel limit and origin sensing by sensing the sensing pieces on the sliding block. The three groups of first displacement sensing components 150 are installed on the sensor mounting seat, and the sensor mounting seat is installed on the body. Of course, the sensing piece matching the first displacement sensing component 150 can also be installed on the surface of the laser marking module 200 facing the moving shaft 120, and at the same time, the installation position of the sensor mounting seat on the moving shaft 120 is adjusted or the size of the sensor mounting seat is changed so that the first displacement sensing component 150 can sense the sensing piece installed on the laser marking module 200, thereby providing the mobile positioning module 100 with near-travel limit, far-travel limit and origin sensing.

[0032] In some embodiments, reference Figure 1 and Figure 3 As shown, the laser marking module 200 includes a mounting seat 210 and a laser assembly 220; The mounting seat 210 is slidably connected to the movable positioning module 100, and the laser assembly 220 is fixed on the mounting seat 210; The adsorption and fixing module 300 is connected to the end of the laser marking module 200, and the laser emitting end of the laser assembly 220 faces the bottom surface of the glass cell to be marked adsorbed and fixed on the adsorption and fixing module 300. Exemplarily, the mounting seat 210 is slidably connected to the moving shaft 120 of the moving positioning module 100, and the second driving assembly 130 drives the mounting seat 210 to slide, thereby driving the laser marking module 200 to rise and fall as a whole.

[0033] In some embodiments, reference Figure 4 As shown, the laser assembly 220 includes a laser 221, a collimating mirror 222 and a galvanometer 223; The laser 221 is fixed on the mounting base 210, and the laser 221 is configured to provide a laser source; One end of the collimator 222 is connected to the emission end of the laser 221, and the collimator 222 is configured to convert the laser beam emitted by the laser 221 into a parallel beam; The other end of the collimator 222 is connected to the galvanometer 223, and the galvanometer 223 is configured to provide marking compatibility on the marking format for laser marking, and the glass cell to be marked adsorbed and fixed by the adsorption and fixing module 300 is located above the galvanometer 223. The galvanometer 223 provides marking compatibility on the marking format for laser marking, and the marking range can be arbitrarily selected between its minimum format and maximum format.

[0034] In some embodiments, the laser marking module 200 further includes a dust collecting assembly 230, and the dust collecting assembly 230 is installed at the laser marking location of the laser marking module 200; The dust collecting assembly 230 is configured to collect dust generated during the marking process. The dust collecting assembly 230 collects dust left after laser marking at the galvanometer 223 to prevent it from interfering with the laser beam.

[0035] In some embodiments, the dust collection assembly 230 includes a dust collection head 231 and an air knife 232; The dust collecting head 231 is fixedly connected to the galvanometer 223, and the dust collecting head 231 is configured to collect dust generated during the marking process; The wind knife 232 is fixedly connected to the dust collecting head 231 , and the wind knife 232 is configured to blow away the dust remaining on the surface of the galvanometer 223 .

[0036] In some embodiments, the dust collecting head 231 wraps the galvanometer 223 and one end of the dust collecting head 231 is fixed to the end surface of the galvanometer 223; An opening flush with the outer peripheral surface of the galvanometer 223 is provided on the circumferential surface of the dust collecting head 231, and the wind knife 232 is installed at the opening, and the air outlet of the wind knife 232 faces the galvanometer 223. Exemplarily, one end of the dust collecting head 231 wraps the galvanometer 223 in the Z direction (vertical direction) and is fixed on the XY plane (top horizontal plane) of the galvanometer 223, which is used to collect dust generated during the marking process. The dust suction port of the dust collecting head 231 is connected to the dust suction port of the dust collector 234, and the collected dust is concentrated in the dust collector 234 for easy dumping and processing. A notch is opened and extended on the circumferential surface of the dust collecting head 231, and the notch surface is flush with the surface of the galvanometer 223. The wind knife 232 is installed on the extended surface, and the two ends of the wind knife 232 are connected to the dust blowing pipe joint 233 to facilitate the connection of external compressed air.

[0037] In some embodiments, the adsorption and fixing assembly 310 includes a mounting member 311, a suction cup 312, and a suction cup pipe joint 313. The mounting member 311 and the first driving assembly 320 are matched to be driven by the first driving assembly 320. The suction cup 312 and the suction cup pipe joint 313 are both mounted on the mounting member 311, and the suction cup 312 is connected to the suction cup pipe joint 313. The suction cup 312 is configured to absorb the marking area of ​​the glass cell to be marked, and to pull the glass cell to be marked down to the top surface of the mounting member 311. The top surface of the mounting member 311 is configured to serve as a Z-direction local shaping reference surface for the glass cell to be marked. Preferably, the suction cup 312 and the suction cup pipe joint 313 are evenly distributed on the mounting member 311, so that the force is more evenly applied when the glass cell to be marked is absorbed and fixed. The first drive component 320 can be any device or component such as a uniformly distributed screw stepper motor or a servo motor that can drive the mounting member 311 to perform short-distance fine movement. The present invention does not impose specific restrictions on this. One end of the first drive component 320 is fixed to the extension surface of another notch opened on the outer peripheral surface of the dust collecting head 231, and the other end is connected to the mounting member 311 to drive the mounting member 311.

[0038] In some embodiments, the laser marking device further includes a control module (not shown), the adsorption and fixing module 300 further includes a second displacement sensing component 330, and the control module is connected to the second displacement sensing component 330 and the first driving component 320 respectively; The second displacement sensing component 330 is configured to monitor in real time the distance between the light-emitting surface of the laser marking module 200 and the glass cell to be marked adsorbed and fixed by the adsorption and fixing module 300, and to feed back the distance to the control module; the second displacement sensing component 330 is installed on the outer peripheral surface of the dust collecting head 231.

[0039] The control module is configured to: based on the distance, control the first driving component 320 to drive the adsorption and fixing component 310 to move the focal plane of the marking area of ​​the glass cell to be marked. Since the glass cell to be marked will be slightly deformed when the suction cup 312 adsorbs the glass cell to be marked, the second displacement sensing component 330 monitors the change in distance from the focal plane in real time, and feeds back the signal to the first driving component 320, and the first driving component 320 adjusts the focal plane of the product marking area through the Z-direction micro-adjustment mounting part 311. Fine adjustments are made in this closed-loop control manner to achieve secondary Z-direction precision positioning.

[0040] In some embodiments, the laser marking device further includes a drag chain assembly 400, which includes a drag chain mounting plate 410 and a drag chain 420. The two ends of the drag chain 420 are respectively connected to the two drag chain mounting plates 410, and are used to assemble the lines in the mobile positioning module 100, the laser marking module 200 and the adsorption fixing module 300, such as the laser power line, the galvanometer power line, the displacement sensor power line, the screw stepper motor power line, the air pipe, etc., and rise and fall together with the laser marking module 200. The drag chain mounting plate 410 is locked on the mounting seat 210 in the laser marking module 200 and can move with it, and the drag chain mounting plate 410 is locked on the base 110 and fixed.

[0041] Embodiment 2: This embodiment provides a laser marking method, using the laser marking device provided in embodiment 1, referring to Figure 5 As shown, the method includes: S1. After the glass cell to be marked is placed at a preset position in the laser marking device, the adsorption and fixing component is started to adsorb and fix the marking area of ​​the glass cell to be marked.

[0042] S2, controlling the mobile positioning module to drive the laser marking module to move to the first position for rough positioning.

[0043] S3, controlling the first driving assembly to drive the adsorption fixing module to move to the second position for precise positioning.

[0044] In some embodiments, reference Figure 6 As shown, step S2 includes: S21, obtaining the position data of the glass cell to be marked based on the first displacement sensing component in the mobile positioning module; S22, based on the position data, controlling the mobile positioning module to drive the laser marking module to move up and down, so as to adjust the focal depth of the laser marking module in the vertical direction of the glass cell to be marked; Step S3 includes: S31, obtaining the distance between the light-emitting surface of the laser marking module and the glass cell to be marked adsorbed and fixed by the adsorption and fixing component based on the second displacement sensing component; S32, based on the distance, controlling the first driving component to drive the adsorption and fixing component to move the focal plane of the marking area of ​​the glass cell sheet to be marked.

[0045] The method of double positioning + real-time closed-loop feedback is used to replace the single Z-axis lifting positioning. The first Z-axis positioning is a rough positioning of the laser marking module and the adsorption fixed module with a large step and fast positioning as a whole. The mobile positioning module drives the laser marking film group and the adsorption fixed module to lift and lower as a whole + the first displacement sensing component provides real-time feedback to adjust the distance between the laser component and the product. After one positioning is completed, the mobile positioning module is fixed; the second Z-axis positioning is a fine-tuning positioning and precise positioning of the adsorption fixed component in the adsorption fixed module. The first driving component drives the adsorption fixed component to lift and lower separately + the second displacement sensing component provides real-time feedback and adjusts the distance between the laser component and the product; because the suction cup will cause a slight deformation of the product after adsorbing the product, the second Z-axis precise positioning is very necessary.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A laser marking device, characterized in that: The laser marking device comprises: a mobile positioning module, a laser marking module and an adsorption fixing module; The laser marking module is slidably connected to the mobile positioning module and is driven to rise and fall by the mobile positioning module; The adsorption and fixing module includes an adsorption and fixing component and a first driving component. The first driving component is installed on the laser marking module. The driving end of the first driving component is matched with the adsorption and fixing component to drive the adsorption and fixing component to rise and fall. The adsorption and fixing component adsorbs and fixes the marking area of ​​the glass cell sheet to be marked. The glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component extends in the horizontal direction. The laser marking module is configured to be connected to the mobile positioning module and driven to rise and fall by the mobile positioning module to perform a primary positioning of the glass cell piece to be marked; the adsorption and fixing component is configured to be driven to rise and fall by the first driving component to perform a secondary positioning of the adsorbed and fixed glass cell piece to be marked.

2. The laser marking device according to claim 1, characterized in that: The mobile positioning module includes a base, a mobile shaft and a second driving component; The movable shaft is vertically mounted on the base, and the laser marking module is slidably connected to the movable shaft; The second driving assembly is installed at the end of the movable shaft, and the second driving assembly is configured to be matched with the laser marking module to drive the laser marking module to slide and rise and fall on the movable shaft.

3. The laser marking device according to claim 2, characterized in that: The mobile positioning module also includes a guide component; The guide assembly comprises at least two slide rails fixed on the base, wherein the at least two slide rails are parallel to the moving axis and symmetrically distributed on both sides of the moving axis; The laser marking module is slidably connected to each of the slide rails.

4. The laser marking device according to claim 2, characterized in that: The laser marking device further includes a control module, the mobile positioning module further includes a first displacement sensing component, and the control module is respectively connected to the first displacement sensing component and the second driving component by signals; The first displacement sensing component is installed on the side of the moving shaft, and the first displacement sensing component is configured to monitor in real time the position data of the glass cell sheet to be marked adsorbed on the adsorption fixing component fixedly connected to the laser marking module, and transmit the position data signal to the control module; The control module is configured to: control the second driving component to drive the laser marking module to rise and fall based on the received position data, so as to adjust the focal depth of the laser marking module in the vertical direction of the glass cell to be marked.

5. The laser marking device according to claim 1, characterized in that: The laser marking module includes a mounting seat and a laser component; The mounting seat is slidably connected to the movable positioning module, and the laser assembly is fixed on the mounting seat; The adsorption and fixing module is connected to the end of the laser marking module, and the laser emitting end of the laser assembly faces the bottom surface of the glass cell to be marked which is adsorbed and fixed on the adsorption and fixing module.

6. The laser marking device according to claim 5, characterized in that: The laser assembly includes a laser, a collimator mirror and a galvanometer mirror; The laser is fixed on the mounting base, and the laser is configured to provide a laser source; One end of the collimator is connected to the emission end of the laser, and the collimator is configured to convert the laser beam emitted by the laser into a parallel beam; The other end of the collimating mirror is connected to the galvanometer, and the galvanometer is configured to provide marking compatibility on a marking format for laser marking. The glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing module is located above the galvanometer.

7. The laser marking device according to claim 6, characterized in that: The laser marking module further comprises a dust collecting component, and the dust collecting component is installed at the laser marking location of the laser marking module; The dust collection assembly is configured to collect dust generated during the marking process.

8. The laser marking device according to claim 7, characterized in that: The dust collection component includes a dust collection head and an air knife; The dust collecting head is fixedly connected to the galvanometer, and the dust collecting head is configured to collect dust generated during the marking process; The wind knife is fixedly connected to the dust collecting head, and the wind knife is configured to blow away the dust remaining on the surface of the galvanometer.

9. The laser marking device according to claim 8, characterized in that: The dust collecting head wraps the galvanometer and one end of the dust collecting head is fixed on the end surface of the galvanometer; An opening flush with the outer peripheral surface of the galvanometer is provided on the circumferential surface of the dust collecting head, and the wind knife is installed at the opening, with the air outlet of the wind knife facing the galvanometer.

10. The laser marking device according to claim 1, characterized in that: The adsorption and fixing assembly includes a mounting member, a suction cup and a suction cup pipe joint, the mounting member and the first driving assembly are matched to be driven by the first driving assembly, the suction cup and the suction cup pipe joint are both mounted on the mounting member, and the suction cup is communicated with the suction cup pipe joint; The suction cup is configured to absorb the marking area of ​​the glass cell to be marked, and pull the glass cell to be marked down to the top surface of the mounting member, and the top surface of the mounting member is configured as a Z-direction local shaping reference surface for the glass cell to be marked.

11. The laser marking device according to claim 1, characterized in that: The laser marking device further comprises a control module, the adsorption and fixing module comprises a second displacement sensing component, and the control module is respectively connected to the second displacement sensing component and the first driving component by signals; The second displacement sensing component is configured to monitor in real time the distance between the light-emitting surface of the laser marking module and the glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component, and to feed back the distance to the control module; The control module is configured to: based on the distance, control the first driving component to drive the adsorption and fixing component to move the focal plane of the marking area of ​​the glass cell sheet to be marked.

12. A laser marking method, characterized in that: Using the laser marking device according to any one of claims 1 to 10, the method comprises: After the glass cell to be marked is placed in a preset position in the laser marking device, the adsorption and fixing component is started so that the adsorption and fixing component adsorbs and fixes the marking area of ​​the glass cell to be marked; Controlling the mobile positioning module to drive the laser marking module to move to a first position for rough positioning; The first driving component is controlled to drive the adsorption fixing module to move to the second position for precise positioning.

13. The laser marking method according to claim 12, characterized in that: The controlling the mobile positioning module to drive the laser marking module to move to the first position for rough positioning includes: Acquire the position data of the glass cell to be marked based on the first displacement sensing component in the mobile positioning module; Based on the position data, the mobile positioning module is controlled to drive the laser marking module to rise and fall, so as to adjust the focal depth of the laser marking module in the vertical direction of the glass cell to be marked; The controlling the first driving component to drive the adsorption fixing module to move to the second position for precise positioning includes: Acquire the distance between the light-emitting surface of the laser marking module and the glass cell sheet to be marked adsorbed and fixed by the adsorption and fixing component based on the second displacement sensing component; Based on the distance, the first driving component is controlled to drive the adsorption and fixing component to move the focal plane of the marking area of ​​the glass cell sheet to be marked.

Images