Laser marking device and method

Abstract

An embodiment of the present invention discloses a laser marking device and method. The device includes: a moving and positioning module, a laser marking module, and an adsorption and fixing module; the laser marking module is slidably connected to the moving and positioning module and is driven by the moving and positioning module to move up and down; the adsorption and fixing module includes 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 connected to the adsorption and fixing component to drive the adsorption and fixing component to move up and down. The adsorption and fixing component adsorbs and fixes the marking area of the glass battery sheet to be marked, and the glass battery sheet to be marked extends in the horizontal direction; the laser marking module is connected to the moving and positioning module and is driven by the moving and positioning module to move up and down for primary positioning; the adsorption and fixing component is driven by the first driving component to move up and down for secondary positioning of the adsorbed and fixed glass battery sheet to be marked; by combining rough positioning and fine positioning, the flatness and focal depth of the product marking area can be accurately adjusted to meet the flatness requirements of high-precision laser marking.

Description

Technical Field

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

[0002] Currently, the thickness of photovoltaic glass wafers is usually 2 - 4 mm, and the planar size is generally 2000 1000 mm, 2000 1600 mm, 2400 1200 mm. They are thin in thickness and large in size, and there is a warping problem in the natural state, that is, in the thickness direction of the glass wafer, it is not an ideal plane, and the local warping degree can reach ±0.3 mm / 300 mm or even larger. This is not allowed in high-precision automated equipment, especially in the field of high-precision laser marking equipment. Since the depth of focus of laser marking is short, the optimal working range in the thickness direction often requires within 0.1 - 0.5 mm. At this time, the flatness of the product in the thickness direction (Z direction) of the working area needs to reach ±0.05 mm or even smaller to ensure the marking quality.

[0003] Currently, there are also methods for flattening glass wafers. The adopted solution is that a uniformly distributed shaping platform + uniformly distributed suction cups are evenly dispersed on the entire XY plane of the product, and the entire product is laid flat on the shaping platform by means of suction cup adsorption. The distance between the laser focus plane and the product is adjusted by using a high-precision Z-axis module to lift the laser so that its depth of focus is within a suitable range.

[0004] The method of flattening the entire product can also achieve the overall Z-direction flattening of the product. However, due to the large size of the product, if a whole shaping platform is used, it is difficult to meet the requirements of its processing flatness and the price is high; if multiple dispersed and uniformly distributed shaping platforms are used, the flatness debugging and equal height adjustment need to be carried out for each shaping platform, and its debugging cost and operation difficulty will increase proportionally. Adjusting the distance between the laser focus plane and the product by using a high-precision Z-axis module to lift the laser can complete the laser marking operation to a certain extent. On the one hand, due to the deviation of the positioning accuracy and repeat positioning accuracy of the Z-axis module itself, there is no real-time closed-loop feedback between its Z-direction movement and the product spacing; on the other hand, due to certain deviations in the manufacturing process and installation and debugging process of the shaping platform and also due to deviations between different products, and these deviations also do not form a closed-loop feedback with the Z-axis module. This is not feasible in occasions with high requirements for laser marking accuracy. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a laser marking device and method to solve the problem that due to the thin thickness and large size of large glass battery wafers, local warping occurs, and the flatness is not good during laser marking, resulting in poor laser marking accuracy.

[0006] In a first aspect, the present invention provides a laser marking device, which includes a moving and positioning module, a laser marking module, and an adsorption and fixing module;

[0007] The laser marking module is slidably connected to the moving and positioning module and is driven by the moving and positioning module to move up and down;

[0008] 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, and the driving end of the first driving component is connected to the adsorption and fixing component to drive the adsorption and fixing component to move up and down. The adsorption and fixing component adsorbs and fixes the marking area of the glass battery wafer to be marked, and the glass battery wafer to be marked adsorbed and fixed by the adsorption and fixing component extends in the horizontal direction;

[0009] The laser marking module is configured to be connected to the moving and positioning module and be driven by the moving and positioning module to move up and down for primary positioning of the glass battery wafer to be marked; the adsorption and fixing component is configured to be driven by the first driving component to move up and down for secondary positioning of the glass battery wafer to be marked adsorbed and fixed.

[0010] In some embodiments, the moving and positioning module includes a base, a moving shaft, and a second driving component;

[0011] The moving shaft is vertically installed on the base, and the laser marking module is slidably connected to the moving shaft;

[0012] The second driving component is installed at the end of the moving shaft, and the second driving component is configured to be connected to the laser marking module to drive the laser marking module to slide up and down on the moving shaft.

[0013] In some embodiments, the moving and positioning module further includes a guiding component;

[0014] The guiding component includes at least two slide rails fixed on the base. The at least two slide rails are parallel to the moving shaft and symmetrically distributed on both sides of the moving shaft;

[0015] The laser marking module is slidably connected to each slide rail.

[0016] In some embodiments, the laser marking device further includes a control module, and the moving and positioning module further includes a first displacement sensing component. The control module is in signal connection with the first displacement sensing component and the second driving component respectively;

[0017] The first displacement sensing component is installed on the side of the moving shaft. The first displacement sensing component is configured to monitor in real time the position data of the glass battery wafer to be marked adsorbed on the adsorption and fixing component fixedly connected to the laser marking module, and transmit the position data signal to the control module;

[0018] The control module is configured to: control the second driving component to drive the laser marking module to lift 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 battery wafer to be marked.

[0019] In some embodiments, the laser marking module includes a mounting base and a laser component;

[0020] The mounting base is slidably connected to the moving and positioning module, and the laser component is fixed on the mounting base;

[0021] The adsorption and fixing module is connected to the end of the laser marking module, and the laser emission end of the laser component faces the bottom surface of the glass battery wafer to be marked adsorbed and fixed on the adsorption and fixing module.

[0022] In some embodiments, the laser component includes a laser, a collimating mirror and a galvanometer;

[0023] The laser is fixed on the mounting base, and the laser is configured to provide a laser source;

[0024] One end of the collimating mirror is connected to the emission end of the laser, and the collimating mirror is configured to convert the laser beam emitted by the laser into a parallel beam;

[0025] The other end of the collimating mirror is connected to the galvanometer. The galvanometer is configured to provide marking compatibility on the marking area for laser marking. The glass battery wafer to be marked adsorbed and fixed by the adsorption and fixing module is located above the galvanometer.

[0026] In some embodiments, the laser marking module further includes a dust collection component, and the dust collection component is installed at the laser marking position of the laser marking module;

[0027] The dust collection component is configured to collect the dust generated during the marking process.

[0028] In some embodiments, the dust collection component includes a dust collection head and an air knife;

[0029] The dust collection head is fixedly connected to the galvanometer, and the dust collection head is configured to collect the dust generated during the marking process;

[0030] The air knife is fixedly connected to the dust collection head, and the air knife is configured to blow the dust remaining on the surface of the galvanometer.

[0031] In some embodiments, the dust collection head wraps the galvanometer and one end of the dust collection head is fixed to the end face of the galvanometer;

[0032] An opening flush with the outer peripheral surface of the galvanometer is provided on the circumferential surface of the dust collection head, the air knife is installed at the opening, and the air outlet of the air knife faces the galvanometer.

[0033] In some embodiments, the adsorption and fixing assembly includes a mounting member, a suction cup and a suction cup pipe joint. The mounting member is configured to receive the drive of the first drive assembly and is driven by the first drive assembly. The suction cup and the suction cup pipe joint are both installed on the mounting member, and the suction cup is communicated with the suction cup pipe joint;

[0034] The suction cup is configured to adsorb the marking area of the glass battery wafer to be marked and pull down the glass battery wafer to be marked to the top surface of the mounting member. The top surface of the mounting member is configured to serve as a Z-direction local shaping reference surface for the glass battery wafer to be marked.

[0035] In some embodiments, the laser marking device further includes a control module. The adsorption and fixing module includes a second displacement sensing component. The control module is respectively signal-connected to the second displacement sensing component and the first drive component;

[0036] The second displacement sensing component is configured to continuously monitor the distance between the light emitting surface of the laser marking module and the glass battery wafer to be marked adsorbed and fixed by the adsorption and fixing component, and feedback the distance to the control module;

[0037] The control module is configured to: based on the distance, control the first drive component to drive the adsorption and fixing component to move the marking area focal plane of the glass battery wafer to be marked.

[0038] In a second aspect, the present invention further provides a laser marking method, which uses the laser marking device as described in the first aspect. The method includes:

[0039] After the glass battery wafer to be marked is placed at a preset position in the laser marking device, start the adsorption and fixing component so that the adsorption and fixing component adsorbs and fixes the marking area of the glass battery wafer to be marked;

[0040] Control the movement and positioning module to drive the laser marking module to move to the first position for rough positioning;

[0041] Control the first driving component to drive the adsorption and fixation module to move to the second position for fine positioning.

[0042] In some embodiments, the control of the moving and positioning module to drive the laser marking module to move to the first position for rough positioning includes:

[0043] Obtain the position data of the glass solar cell to be marked based on the first displacement sensing component in the moving and positioning module;

[0044] Based on the position data, control the moving and positioning module to drive the laser marking module to lift and lower, so as to adjust the focal depth of the laser marking module in the vertical direction of the glass solar cell to be marked;

[0045] The control of the first driving component to drive the adsorption and fixation module to move to the second position for fine positioning includes:

[0046] Obtain the distance between the light-emitting surface of the laser marking module and the glass solar cell to be adsorbed and fixed by the adsorption and fixation component based on the second displacement sensing component;

[0047] Based on the distance, control the first driving component to drive the adsorption and fixation component to move the focal plane of the marking area of the glass solar cell to be marked.

[0048] One or more of the above embodiments of the present invention have at least the following beneficial effects:

[0049] The present invention provides a laser marking device and method. The device includes: a moving and positioning module, a laser marking module and an adsorption and fixation module; the laser marking module is slidably connected to the moving and positioning module and is driven to lift and lower by the moving and positioning module; the adsorption and fixation module includes an adsorption and fixation 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 connected to the adsorption and fixation component to drive the adsorption and fixation component to lift and lower. The adsorption and fixation component adsorbs and fixes the marking area of the glass solar cell to be marked, and the glass solar cell to be marked adsorbed and fixed by the adsorption and fixation component extends in the horizontal direction; the laser marking module is configured to be connected to the moving and positioning module and be driven to lift and lower by the moving and positioning module to perform a primary positioning on the glass solar cell to be marked; the adsorption and fixation component is configured to be driven to lift and lower by the first driving component to perform a secondary positioning on the glass solar cell to be adsorbed and fixed; by using the two-positioning method to replace the single Z-direction lifting and positioning, combining rough positioning and fine positioning, the flatness and focal depth of the product marking area can be accurately adjusted to meet the flatness requirements of high-precision laser marking.

[0050] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0051] Referring to the accompanying drawings, the disclosure of the present invention will become more readily understandable. It is easily understood by those skilled in the art 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 drawings are used to represent similar components, where:

[0052] Figure 1 is a perspective view of a laser marking device provided by one embodiment of the present invention;

[0053] Figure 2 is a schematic diagram of the installation position of the first displacement sensing component in the laser marking device provided by one embodiment of the present invention;

[0054] Figure 3 is a schematic structural diagram of the laser marking module in the laser marking device provided by one embodiment of the present invention;

[0055] Figure 4 is a schematic structural diagram of the laser component in the laser marking device provided by one embodiment of the present invention;

[0056] Figure 5 is a flowchart of the laser marking method provided by one embodiment of the present invention;

[0057] Figure 6 is a flowchart of the preferred mode of the laser marking method provided by one embodiment of the present invention.

[0058] Wherein: 100, mobile positioning module; 110, base; 120, moving shaft; 130, second driving component; 140, guiding component; 141, slide rail; 150, first displacement sensing component; 200, laser marking module; 210, mounting seat; 220, laser component; 221, laser; 222, collimating mirror; 223, galvanometer; 230, dust collection component; 231, dust collection head; 232, air knife; 233, dust blowing pipe joint; 234, dust collector; 300, adsorption and fixing module; 310, adsorption and fixing component; 311, mounting part; 312, suction cup; 313, suction cup pipe joint; 320, first driving component; 330, second displacement sensing component; 400, drag chain component; 410, drag chain mounting plate; 420, drag chain. Detailed Embodiments

[0059] Some embodiments of the present invention will be 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 principle of the present invention and are not intended to limit the scope of protection of the present invention.

[0060] As described in the background art, currently, photovoltaic glass battery wafers are thin and have a large planar size, and there is a problem of warping in the natural state. During high-precision laser marking, due to the focal depth of the laser marking, the flatness requirement for the marked object is extremely high, and warped glass battery wafers are difficult to meet the flatness requirement for high-precision laser marking. Currently, there are also methods for flattening glass battery wafers. The solution is to lay the entire product of the glass battery wafer flat on the shaping table and flatten the entire product. However, due to the large area of the glass battery wafer, the cost of the entire shaping table is extremely high. When using multiple scattered shaping platforms in combination, the debugging cost and operation difficulty of the multiple shaping platforms increase significantly.

[0061] To solve the above problems, the present invention creatively proposes a laser marking device and method. The adsorption and fixing module for adsorbing and fixing the glass battery wafer is fixedly connected to the laser marking module. The laser marking module first adjusts its distance from the glass battery wafer under the drive of the moving and positioning module for large-step rapid rough positioning, and then drives the adsorption and fixing component for adsorbing the glass battery wafer 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 for small-step fine positioning. Through the combination of rough positioning and fine positioning, the focal depth of the marking area of the glass battery wafer is adjusted twice, so that the marking area of the glass battery wafer meets the flatness requirement for high-precision laser marking.

[0062] The present invention will be specifically described below through specific embodiments.

[0063] Embodiment 1: This embodiment provides a laser marking device. Referring to Figure 1 as shown, the laser marking device includes: a moving and positioning module 100, a laser marking module 200, and an adsorption and fixing module 300;

[0064] The laser marking module 200 is slidably connected to the moving and positioning module 100 and is driven to lift by the moving and positioning module 100;

[0065] 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 connected to the adsorption and fixing component 310 to drive the adsorption and fixing component 310 to lift. The adsorption and fixing component 310 adsorbs and fixes the marking area of the glass battery wafer to be marked, and the glass battery wafer to be marked adsorbed and fixed by the adsorption and fixing component 310 extends in the horizontal direction;

[0066] The laser marking module 200 is configured to be connected to the mobile positioning module 100 and driven by the mobile positioning module 100 to lift and lower for primary positioning of the glass solar cell to be marked; the adsorption and fixation assembly 310 is configured to be driven by the first driving assembly 320 to lift and lower for secondary positioning of the adsorbed and fixed glass solar cell to be marked.

[0067] In some embodiments, the mobile positioning module 100 includes a base 110, a moving shaft 120 and a second driving assembly 130;

[0068] The moving shaft 120 is vertically installed on the base 110, and the laser marking module is slidably connected to the moving shaft;

[0069] The second driving assembly 130 is installed at the end of the moving shaft 120. The second driving assembly 130 is configured to be mated with the laser marking module 200 to drive the laser marking module 200 to slide up and down on the moving shaft 120. By sliding the laser marking module 200 up and down on the moving shaft 120, the movement direction of the laser marking module 200 can be restricted by the setting of the moving shaft 120, so as to implement the distance in the Z direction between the laser marking module 200 and the glass solar cell to be marked adsorbed and fixed by the adsorption and fixation module 300 fixed on the laser marking module 200. The second driving assembly 130 can be a servo motor, a cylinder or any other component or device capable of driving the laser marking module 200 to slide up and down on the moving shaft 120, and this embodiment does not make specific limitations on this. Exemplarily, the second driving assembly 130 is a servo motor, which is installed at the end of the moving shaft 120 through a flange, and its driving end is mated with the laser marking module 200 to provide power for the sliding of the laser marking module 200 on the moving shaft 120.

[0070] Preferably, the mobile positioning module 100 further includes a guiding assembly 140;

[0071] The guiding assembly 140 includes at least two slide rails 141 fixed on the base 110. The at least two slide rails 141 are parallel to the moving shaft 120 and symmetrically distributed on both sides of the moving shaft 120;

[0072] The laser marking module 200 is slidably connected to each slide rail 141. By symmetrically arranging slide rails 141 parallel to the moving shaft 120 on both sides of the moving shaft 120, and each slide rail 141 is slidably connected to the laser marking module 200, the load and torque of the moving shaft 120 can be shared, and the lifting of the laser marking module 200 can be guided and stabilized.

[0073] In some embodiments, refer to Figure 1 And Figure 2As shown, the laser marking device further includes a control module (not shown in the figure). The mobile positioning module 100 further includes a first displacement sensing component 150. The control module is respectively in signal connection with the first displacement sensing component 150 and the second driving component 130;

[0074] The first displacement sensing component 150 is installed on the side of the moving shaft 120. The first displacement sensing component 150 is configured to monitor in real time the position data of the glass battery wafer to be marked adsorbed on the adsorption and fixing component 310 fixedly connected to the laser marking module 200, and transmit the position data signal to the control module;

[0075] The control module is configured to: control the second driving component 130 to drive the laser marking module 200 to lift 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 battery wafer to be marked.

[0076] Specifically, referring to Figure 2 As shown, a sliding block is slidably installed on the moving shaft 120. The laser marking module 200 is fixed on the sliding block, and an induction sheet matching the first displacement sensing component 150 is installed on the sliding block. There are three groups of the first displacement sensing components 150, which provide near-travel limit, far-travel limit and origin sensing for the mobile positioning module 100 by sensing the induction sheet on the sliding block. The 3 groups of the 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 induction sheet 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, adjust the installation position of the sensor mounting seat on the moving shaft 120 or replace the size of the sensor mounting seat so that the first displacement sensing component 150 can sense the induction sheet installed on the laser marking module 200, thereby providing near-travel limit, far-travel limit and origin sensing for the mobile positioning module 100.

[0077] In some embodiments, referring to Figure 1 And Figure 3 As shown, the laser marking module 200 includes a mounting seat 210 and a laser component 220;

[0078] The mounting seat 210 is slidably connected to the mobile positioning module 100, and the laser component 220 is fixed on the mounting seat 210;

[0079] The adsorption and fixation module 300 is connected to the end of the laser marking module 200, and the laser emission end of the laser assembly 220 faces the bottom surface of the glass solar cell to be marked adsorbed and fixed on the adsorption and fixation module 300. Exemplarily, the mounting seat 210 is slidably connected to the moving shaft 120 of the moving and positioning module 100, and the second driving assembly 130 drives the mounting seat 210 to slide so as to drive the entire laser marking module 200 to move up and down.

[0080] In some embodiments, referring to Figure 4 as shown, the laser assembly 220 includes a laser 221, a collimating mirror 222 and a galvanometer 223;

[0081] The laser 221 is fixed on the mounting seat 210, and the laser 221 is configured to provide a laser source;

[0082] One end of the collimating mirror 222 is connected to the emission end of the laser 221, and the collimating mirror 222 is configured to convert the laser beam emitted by the laser 221 into a parallel beam;

[0083] The other end of the collimating mirror 222 is connected to the galvanometer 223, and the galvanometer 223 is configured to provide marking compatibility on the marking surface for laser marking. The glass solar cell to be marked adsorbed and fixed by the adsorption and fixation module 300 is located above the galvanometer 223. The galvanometer 223 provides marking compatibility on the marking surface for laser marking, and the marking interval can be arbitrarily selected between its minimum and maximum surfaces.

[0084] In some embodiments, the laser marking module 200 further includes a dust collection assembly 230, and the dust collection assembly 230 is installed at the laser marking position of the laser marking module 200;

[0085] The dust collection assembly 230 is configured to collect the dust generated during the marking process. The dust collection assembly 230 collects the dust remaining after laser marking at the galvanometer 223 to prevent it from interfering with the laser beam.

[0086] In some embodiments, the dust collection assembly 230 includes a dust collection head 231 and an air knife 232;

[0087] The dust collection head 231 is fixedly connected to the galvanometer 223, and the dust collection head 231 is configured to collect the dust generated during the marking process;

[0088] The air knife 232 is fixedly connected to the dust collection head 231, and the air knife 232 is configured to blow the dust remaining on the surface of the galvanometer 223.

[0089] In some embodiments, the dust collection head 231 wraps the galvanometer 223 and one end of the dust collection head 231 is fixed to the end face of the galvanometer 223;

[0090] An opening flush with the outer peripheral surface of the galvanometer 223 is provided on the peripheral surface of the dust collection head 231. The air knife 232 is installed at the opening, and the air outlet of the air knife 232 faces the galvanometer 223. Exemplarily, one end of the dust collection head 231 wraps the galvanometer 223 in the Z direction (vertical direction) and is fixed in the XY plane (top horizontal plane) of the galvanometer 223 for collecting dust generated during the marking process. The dust extraction port of the dust collection 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 treatment. A notch is formed on the peripheral surface of the dust collection head 231 and extended. The notch surface is flush with the surface of the galvanometer 223, and the air knife 232 is installed on the extended surface. Both ends of the air knife 232 are connected to the air blowing pipe joint 233 to facilitate connection to external compressed air.

[0091] 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 is configured to be driven by the first driving assembly 320 and receive the driving of the first driving assembly 320. The suction cup 312 and the suction cup pipe joint 313 are both installed on the mounting member 311, and the suction cup 312 is in communication with the suction cup pipe joint 313;

[0092] The suction cup 312 is configured to adsorb the marking area of the glass battery sheet to be marked and pull down the glass battery sheet to be marked 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 battery sheet to be marked. Preferably, the suction cups 312 and the suction cup pipe joints 313 are evenly distributed on the mounting member 311, and the force is more evenly applied when adsorbing and fixing the glass battery sheet to be marked. The first driving assembly 320 can be any device or component such as a uniformly distributed lead screw stepping motor or a servo motor that can drive the mounting member 311 to perform short-distance fine movement. The present invention does not make specific limitations on this. One end of the first driving assembly 320 is fixed on the extended surface at another notch formed on the outer peripheral surface of the dust collection head 231, and the other end is connected to the mounting member 311 to drive the mounting member 311.

[0093] In some embodiments, the laser marking device further includes a control module (not shown in the figure). The adsorption and fixing module 300 further includes a second displacement sensing assembly 330. The control module is respectively connected to the second displacement sensing assembly 330 and the first driving assembly 320;

[0094] The second displacement sensing assembly 330 is configured to monitor in real time the distance between the light emitting surface of the laser marking module 200 and the glass battery sheet to be marked adsorbed and fixed by the adsorption and fixing module 300, and feedback the distance to the control module; the second displacement sensing assembly 330 is installed on the outer peripheral surface of the dust collection head 231.

[0095] The control module is configured to: control the first driving component 320 to drive the adsorption and fixing component 310 to move to the focal plane of the marking area of the glass battery sheet to be marked based on the distance. Since the glass battery sheet to be marked will undergo a slight deformation when adsorbed by the suction cup 312, the second displacement sensing component 330 monitors the change in the distance from the focal plane in real time at this time, and feeds back the signal to the first driving component 320. The first driving component 320 adjusts the focal plane of the product marking area by means of the Z-direction micro-motion adjusting mounting member 311. Fine adjustment is performed in this closed-loop control manner to achieve secondary Z-direction precise positioning.

[0096] In some embodiments, the laser marking device further includes a drag chain assembly 400. The drag chain assembly 400 includes a drag chain mounting plate 410 and a drag chain 420. Both ends of the drag chain 420 are respectively connected to two drag chain mounting plates 410, and are used for integrating the circuits in the moving and positioning module 100, the laser marking module 200, and the adsorption and fixing module 300, such as the laser power supply wire, the galvanometer power supply wire, the displacement sensor power supply wire, the lead screw stepper motor power supply wire, the air pipe, etc., and lift together with the laser marking module 200. The drag chain mounting plate 410 is locked to the mounting seat 210 in the laser marking module 200 and can move with it. The drag chain mounting plate 410 is locked to the base 110 and is fixed.

[0097] Embodiment 2: This embodiment provides a laser marking method, which uses the laser marking device provided in Embodiment 1, as shown in Figure 5 The method includes:

[0098] S1. After the glass battery sheet to be marked is placed at the preset position in the laser marking device, start the adsorption and fixing component to make the adsorption and fixing component adsorb and fix the marking area of the glass battery sheet to be marked.

[0099] S2. Control the moving and positioning module to drive the laser marking module to move to the first position for rough positioning.

[0100] S3. Control the first driving component to drive the adsorption and fixing module to move to the second position for precise positioning.

[0101] In some embodiments, as shown in Figure 6 Step S2 includes:

[0102] S21. Obtain the position data of the glass battery sheet to be marked based on the first displacement sensing component in the moving and positioning module;

[0103] S22. Control the moving and positioning module to drive the laser marking module to lift based on the position data to adjust the focal depth of the laser marking module in the vertical direction of the glass battery sheet to be marked;

[0104] Step S3 includes:

[0105] S31. Obtain the distance between the light-emitting surface of the laser marking module and the glass battery sheet to be marked adsorbed and fixed by the adsorption and fixing component based on the second displacement sensing component;

[0106] S32. Control the first driving component to drive the adsorption and fixing component to move the focal plane of the marking area of the glass battery sheet to be marked based on the distance.

[0107] Adopt the method of two-positioning + real-time closed-loop feedback to replace the single Z-direction lifting positioning. The first Z-direction positioning is the rough positioning of the overall large-step rapid positioning of the laser marking module and the adsorption and fixing module. The laser marking film group and the adsorption and fixing module are lifted and lowered together by driving the positioning module, and the first displacement sensing component real-time feedback adjusts the distance between the laser component and the product. After the first positioning is completed, the moving positioning module remains stationary. The second Z-direction positioning is the fine positioning of the small-step fine adjustment positioning of the adsorption and fixing component in the adsorption and fixing module. The adsorption and fixing component is lifted and lowered separately by driving the first driving component, and the second displacement sensing component real-time feedback and adjusts the distance between the laser component and the product. Since the product will produce a slight deformation after being adsorbed by the suction cup, the second Z-direction fine positioning is very necessary.

[0108] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0109] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0110] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to 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, an adsorption fixing module and a control 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 mobile positioning module includes a first displacement sensing component; the first displacement sensing component is configured to monitor in real time the position data of the glass cell 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 lifting and lowering of the laser marking module 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 for one positioning; The adsorption and fixing module further includes a second displacement sensing component, which 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 piece to be marked, so as to perform secondary positioning on 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 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. 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.

12. The laser marking method according to claim 11, 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: 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.

Images