Laser Marking Device for Photovoltaic Module Products

Abstract

The present invention relates to a laser marking device for photovoltaic module products. A front blocking mechanism is provided at the front end in the conveying direction of a conveying line unit for conveying photovoltaic module products, a rear blocking mechanism is provided at the rear end, a left alignment mechanism and a right alignment mechanism are provided on the left and right sides, and a Y-axis transfer mechanism is provided beside. An X-axis movement unit one for driving a laser marking system to move along the X-axis and an X-axis movement unit two for driving a target mounting mechanism to move along the X-axis are connected to the Y-axis transfer mechanism. A Z-axis lifting mechanism is provided on the target mounting mechanism, a target is installed on the Z-axis lifting mechanism, and an X-axis movement unit three for driving a grinding mounting mechanism to move along the X-axis is provided below the movement trajectory of the target. A θ-axis rotation unit is provided on the grinding mounting mechanism, and a grinding head for grinding the bottom surface of the target is installed on the rotation axis of the θ-axis rotation unit. It is better to realize on-line laser marking and on-line grinding repair and cleaning of the target.

Description

Technical Field

[0001] The present invention relates to a laser marking device for photovoltaic module products. Background Art

[0002] Laser marking is a marking method that uses a laser with a high energy density to locally irradiate a workpiece, causing the surface material to vaporize or undergo a chemical reaction with a color change, thereby leaving a permanent mark. Laser marking can produce various characters, symbols, patterns, etc., and the character size can range from millimeters to micrometers.

[0003] Currently, photovoltaic module products use the method of manual labeling, which is not standardized and the label paper is prone to falling off, making it inconvenient for product traceability tracking.

[0004] Therefore, a laser marking device for photovoltaic module products needs to be designed to achieve online marking, with a unique barcode that never falls off, facilitating product traceability tracking. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a laser marking device for photovoltaic module products to achieve online laser marking and improve product quality.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A laser marking device for photovoltaic module products, characterized in that: it includes a conveying line unit for conveying photovoltaic module products and a laser marking system for marking the conveyed photovoltaic module products. A front blocking mechanism is provided at the front end of the conveying direction of the conveying line unit, a rear blocking mechanism is provided at the rear end, a left alignment mechanism and a right alignment mechanism are provided on the left and right sides, a Y-axis transfer mechanism is provided beside, an X-axis movement unit one for driving the laser marking system to move along the X-axis and an X-axis movement unit two for driving the target mounting mechanism to move along the X-axis are connected to the Y-axis transfer mechanism to drive the X-axis movement unit one and the X-axis movement unit two to move along the Y-axis. A Z-axis lifting mechanism is provided on the target mounting mechanism, a target is installed on the Z-axis lifting mechanism, and an X-axis movement unit three for driving the grinding mounting mechanism to move along the X-axis is provided below the movement trajectory of the target. A θ-axis rotation unit is provided on the grinding mounting mechanism, and a grinding head for grinding the bottom surface of the target is installed on the rotation axis of the θ-axis rotation unit.

[0008] Furthermore, in the above-mentioned laser marking device for photovoltaic module products, a lifting mechanism for holding the photovoltaic module products is provided below the movement trajectory of the target.

[0009] Furthermore, in the above-mentioned laser marking device for photovoltaic module products, the lifting mechanism includes a lifting unit and a tray installed thereon.

[0010] Further, for the laser marking device of the above-mentioned photovoltaic module product, the laser marking system includes a laser and a galvanometer arranged on its output optical path, and target-grabbing cameras for sequentially grabbing the target are provided on both the front and rear sides of the galvanometer.

[0011] Further, for the laser marking device of the above-mentioned photovoltaic module product, a camera for galvanometer calibration and focus finding is installed on one side of the target-grabbing camera.

[0012] Further, for the laser marking device of the above-mentioned photovoltaic module product, a splash-proof shield device is provided on the grinding installation mechanism, which includes a slide rail and two two-piece shields slidably engaged therewith, and a driving mechanism is respectively used to drive them to close or separate, and a negative pressure dust removal device is provided inside the shield.

[0013] Further, for the laser marking device of the above-mentioned photovoltaic module product, both the left alignment mechanism and the right alignment mechanism include a machine base, a moving frame is provided on the machine base, and a driving mechanism for driving the moving frame to approach or move away, and an alignment component is installed on the moving frame.

[0014] Further, for the laser marking device of the above-mentioned photovoltaic module product, both the front blocking mechanism and the rear blocking mechanism include a Z-axis lifting frame and a bearing seat installed thereon, a rotatable shaft is installed on the bearing seat, and a nylon sleeve is sleeved on the rotatable shaft.

[0015] The present invention has significant advantages and beneficial effects compared with the prior art, which are specifically reflected in the following aspects:

[0016] ① The device of the present invention performs laser marking operations online at low cost and high speed automatically, and can preferably realize online laser marking and online grinding repair and cleaning of the target material;

[0017] ② For online laser marking, the bar code is unique and never falls off, which is convenient for tracing and tracking of photovoltaic products and improves the quality of photovoltaic module products; the marking position is fixed and unified, realizing the appearance unity of photovoltaic module products, which is beautiful and generous;

[0018] ③ It realizes online marking and target material repair without stopping the machine, improves the production line capacity, greatly saves labor compared with the traditional manual labeling method, the online grinding repair significantly improves the service life of the target material, reduces the frequency of target material replacement, thereby reducing costs, improves the market competitiveness of the customer's photovoltaic module products, and brings greater economic benefits.

[0019] Other features and advantages of the present invention will be described in the subsequent specification, and part of them will become obvious from the specification, or be understood by implementing the specific embodiments of the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specification and the drawings. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0021] Figure 1 : Structural schematic diagram of the device of the present invention;

[0022] Figure 2 : Structural schematic diagram of the laser marking system;. Specific embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings below is not intended to limit the scope of the claimed present invention, but only represents the selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters indicate similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in the subsequent accompanying drawings. At the same time, in the description of the present invention, orientation terms and order terms are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0025] Such as Figure 1 、 Figure 2As shown in the figure, the laser marking device for photovoltaic module products includes a conveying line unit 4 for conveying photovoltaic module products 12 and a laser marking system for marking the conveyed photovoltaic module products. At the front end of the conveying direction of the conveying line unit 4, there is a front blocking mechanism 1, at the rear end there is a rear blocking mechanism 3, on the left and right sides there are a left alignment mechanism 2 and a right alignment mechanism, and beside there is a Y-axis transfer mechanism 5. An X-axis movement unit one 10 for driving the laser marking system to move along the X-axis and an X-axis movement unit two 11 for driving the target mounting mechanism 6 to move along the X-axis are connected to the Y-axis transfer mechanism 5, driving the X-axis movement unit one 10 and the X-axis movement unit two 11 to move along the Y-axis. On the target mounting mechanism 6, there is a Z-axis lifting mechanism, and a target is installed on the Z-axis lifting mechanism. Below the movement trajectory of the target, there is an X-axis movement unit three 7 for driving the grinding mounting mechanism to move along the X-axis. On the grinding mounting mechanism, there is a θ-axis rotation unit, and a grinding head 8 for grinding the bottom surface of the target is installed on the rotation axis of the θ-axis rotation unit. Below the movement trajectory of the target, there is a lifting mechanism 9 for supporting the photovoltaic module product.

[0026] Among them, the laser marking system includes a laser 13 and a galvanometer 14 arranged on its output optical path. On both the front and rear sides of the galvanometer 14, there are target grabbing cameras for sequentially grabbing the target. On one side of the target grabbing camera, there is a camera for galvanometer correction and focus finding.

[0027] On the grinding mounting mechanism, there is a splash-proof shield device, which includes a slide rail and two two-piece shields slidably fitted thereon, and are respectively driven by a driving mechanism to be closed or separated from each other. Inside the shield, there is a negative pressure dust removal device.

[0028] Both the left alignment mechanism 2 and the right alignment mechanism include a machine base, on the machine base there is a moving frame and a driving mechanism for driving the moving frame to approach or move away, and a alignment component is installed on the moving frame, and the alignment component is a nylon wheel.

[0029] Both the front blocking mechanism 1 and the rear blocking mechanism 3 include a Z-axis lifting frame and a bearing seat installed thereon, a rotatable shaft is installed on the bearing seat, and a nylon sleeve is sleeved on the shaft.

[0030] The lifting mechanism 9 includes a lifting unit and a tray installed thereon.

[0031] In specific applications, the photovoltaic module product (glass) is transmitted online through the conveying line unit 4. When the glass to be marked is transmitted to a predetermined position, the conveying line stops running. At this time, the front blocking mechanism 1 rises to block the glass from moving forward.

[0032] After the conveying line unit 4 stops running, the left alignment mechanism 2, the right alignment mechanism and the rear blocking mechanism 3 act synchronously, and cooperate with the front blocking mechanism 1 to align the four sides of the marked glass product, and fix the glass at the predetermined marking position.

[0033] After the four sides are regularized, the lifting mechanism 9 rises to lift the lower surface of the glass, and then the Y-axis transfer mechanism 5 combines with the X-axis motion unit two 11 to drive the target to the marking position. Then, the Z-axis lifting mechanism drives the target to press down on the upper surface of the glass to press the marked glass tightly.

[0034] After the glass is pressed tightly, the X-axis motion unit one 10 drives the laser marking system to the marking position and starts to work. The laser 13 outputs a beam to mark the bar code information on the fixed upper surface of the glass. After the marking work is completed, the front blocking mechanism 1, the rear blocking mechanism 3, the left regularization mechanism 2, and the right regularization mechanism return to their original positions. The lifting mechanism 9 and the target withdraw synchronously, and the conveying line unit 4 transports the marked glass products to the next working station on the production line.

[0035] During the process of transporting the marked glass products to the next working station, the upper transfer station allows the unmarked glass products to flow into the marking station. The conveying line unit 4 transports the glass to be marked to the specified position, and repeats the above marking process. In this way, the online laser marking of the glass is realized.

[0036] After repeating this process hundreds of times, due to the laser action, the working surface of the target will be damaged, showing scratches of different depths, which will affect the marking clarity and cause poor marking. To realize the online repair of the target, extend the service life of the target, and reduce the operation cost of the equipment, an online target repair mechanism is designed.

[0037] The target repair process is as follows: After the target has been laser marked hundreds of times, there are scratch damages on the working surface of the target. The Y-axis transfer mechanism 5 combines with the X-axis motion unit two 11 to drive the target to the repair position. The X-axis motion unit three 7 can drive the grinding head 8 to the repair position, which is directly below the working surface of the target. Through the displacement sensor, the upper surface of the grinding head 8 (bowl-shaped diamond grinding wheel) is accurately aligned with the target to prepare for the grinding process.

[0038] After the grinding alignment work is completed, the X-axis motion unit three 7 operates. The θ-axis rotation unit drives the diamond grinding wheel to rotate at a high speed. The Z-axis lifting mechanism can drive the target to move downward and feed a set milling amount downward to realize the grinding process of the scratches on the lower surface of the target.

[0039] During the grinding process, the grinding head is enclosed in a splash-proof cover. One is to reduce noise, and the other is to effectively collect grinding dust through a negative pressure dust removal device to avoid polluting the working environment.

[0040] After the grinding process is completed, the Y-axis transfer mechanism 5 is combined with the X-axis motion unit 11 to move the target material back to the top of the glass marking position. In the process of moving back to the top of the marking position, the ground target material is cleaned, and the ground target surface is cleaned by the high-speed rotating drum cleaning mechanism, waiting for another marking work.

[0041] This process is repeated several hundred times. After marking, the target is ground, repaired and cleaned, and then moved to the top of the marking position.

[0042] In summary, the device of the present invention performs marking operations in an automated manner at a low cost and high speed online, and can better realize online laser marking and online grinding, repairing and cleaning of target materials.

[0043] On the one hand, online laser marking makes the barcode unique and never falls off, which facilitates the tracking and tracing of photovoltaic products and improves the quality of photovoltaic module products; the marking position is fixed and unified, so that the appearance of photovoltaic module products is unified and beautiful; on the other hand, online marking and target material repair without stopping the machine can improve the production line capacity. Compared with the traditional manual labeling method, it greatly saves manpower. Online grinding and repair can significantly increase the service life of the target material and reduce the frequency of target material replacement, thereby reducing costs, improving the market competitiveness of customers' photovoltaic module products, and bringing greater economic benefits.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0045] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0046] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. Laser marking device for photovoltaic module products, characterized in that: It includes a conveyor line unit (4) for conveying photovoltaic module products (12) and a laser marking system for marking the conveyed photovoltaic module products. At the front end in the conveying direction of the conveyor line unit (4), there is a front blocking mechanism (1), at the rear end there is a rear blocking mechanism (3), on the left and right sides there are a left alignment mechanism (2) and a right alignment mechanism, and beside there is a Y-axis transfer mechanism (5). An X-axis movement unit one (10) for driving the laser marking system to move along the X-axis and an X-axis movement unit two (11) for driving the target mounting mechanism (6) to move along the X-axis are connected to the Y-axis transfer mechanism (5) to drive the X-axis movement unit one (10) and the X-axis movement unit two (11) to move along the Y-axis. On the target mounting mechanism (6), there is a Z-axis lifting mechanism, and a target is installed on the Z-axis lifting mechanism. Below the movement trajectory of the target, there is an X-axis movement unit three (7) for driving the grinding mounting mechanism to move along the X-axis. On the grinding mounting mechanism, there is a θ-axis rotation unit, and a grinding head (8) for grinding the bottom surface of the target is installed on the rotation axis of the θ-axis rotation unit; Below the movement trajectory of the target, there is a lifting mechanism (9) for holding the photovoltaic module product. The lifting mechanism (9) includes a lifting unit and a tray installed thereon; On the grinding mounting mechanism, there is a splash-proof shield device, which includes a slide rail and two split shields slidably fitted thereon. Each is driven by a driving mechanism to be closed or separated from each other, and a negative pressure dust removal device is provided inside the shield.

2. The laser marking device for the photovoltaic module product according to claim 1, wherein: The laser marking system includes a laser (13) and a galvanometer (14) arranged on its output optical path. On both the front and rear sides of the galvanometer (14), there are target grabbing cameras for sequentially grabbing the target.

3. The laser marking device for the photovoltaic module product according to claim 2, characterized in that: On one side of the target grabbing camera, there is a camera for galvanometer calibration and focus finding.

4. The laser marking device for a photovoltaic module product according to claim 1, characterized in that: Both the left alignment mechanism (2) and the right alignment mechanism include a machine base, on the machine base there is a moving frame and a driving mechanism for driving the moving frame to approach or move away, and a alignment component is installed on the moving frame.

5. The laser marking device for the photovoltaic module product according to claim 1, wherein: Both the front blocking mechanism (1) and the rear blocking mechanism (3) include a Z-axis lifting frame and a bearing seat installed thereon. A freely rotatable rotating shaft is installed on the bearing seat, and a nylon sleeve is sleeved on the rotating shaft.

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