An integrated water cooling system for a laser marking device and a laser marking device

Abstract

The application discloses a kind of integrated water cooling system and laser marking equipment for laser marking equipment, integrated water cooling system includes outer box, laser generator being arranged in the first sub-box in outer box, water cooling device being arranged in the second sub-box in outer box;First waterway pipeline is also provided in the first sub-box;Second water inlet interface, second water outlet interface are provided on the box wall of second sub-box, the outlet of second waterway pipeline of water cooling device is connected with second water outlet interface, the inlet of second waterway pipeline is connected with second water inlet interface;First water inlet interface is communicated with second water outlet interface, first water outlet interface is communicated with second water inlet interface, and then first waterway pipeline in the first sub-box and the second waterway pipeline of water cooling device form first circulating waterway.The application integrates water cooling device and laser module under the premise that laser marking equipment can normally operate in high heat environment, and reduces cost.

Description

Technical Field

[0001] This invention relates to the field of cooling and protection technology for laser technology application equipment, and in particular to an integrated water cooling system and laser marking equipment for laser marking equipment. Background Technology

[0002] With the increasing demand for marking in the metallurgical industry, laser marking has emerged, offering advantages such as high marking speed, low operating costs, and no pollution. However, a pressing issue to be addressed in laser marking is the impact of high-heat environments on the laser and related equipment.

[0003] Currently, to reduce the impact of high-heat environments, cooling devices are often installed at the laser source location, such as water-cooled jackets, heat pipe radiators, and air-cooled radiators. However, ordinary water-cooled radiators require a cooling water circulation system. For split marking systems, this requires complex water-cooled radiator circuit design or separate circulation water systems, which leads to complicated design and matching issues and increases costs.

[0004] Therefore, there is a need for an integrated water-cooling system and laser marking equipment. Summary of the Invention

[0005] To address the problems of existing technologies, this invention provides an integrated water-cooling system and laser marking equipment, the technical solution of which is as follows:

[0006] On one hand, the present invention provides an integrated water cooling system for laser marking equipment, including an outer casing, a laser generator, and a water cooling device. The water cooling device includes a water pump, a water cooling block, a heat exchanger, and a cooling fan. The laser generator is disposed in a first sub-casing inside the outer casing, and the water cooling device is disposed in a second sub-casing inside the outer casing. The second sub-casing is provided with a heat insulation layer.

[0007] The first sub-box is also provided with a first water pipe, the two ends of which are respectively connected to a first water inlet and a first water outlet on the wall of the first sub-box; the second sub-box is provided with a second water inlet and a second water outlet on the wall of the second sub-box, the outlet of the second water pipe of the water cooling device is connected to the second water outlet, and the inlet of the second water pipe is connected to the second water inlet.

[0008] The first water inlet is connected to the second water outlet, and the first water outlet is connected to the second water inlet, thereby forming a first circulating water circuit with the first water pipe inside the first sub-box and the second water pipe of the water cooling device.

[0009] The second sub-box is also provided with an exhaust vent on its wall that communicates with the outside of the outer box, for discharging airflow from the second sub-box.

[0010] Furthermore, the heat exchanger is located in the area opposite to the exhaust vent, and the cooling fan is located in the area opposite to the heat exchanger.

[0011] Preferably, the outer casing is also provided with a heat insulation layer.

[0012] Furthermore, the laser generator has a built-in machine base for supporting the laser generator body, and the first water pipe is installed inside the machine base.

[0013] Preferably, the bottom of the outer casing is provided with multiple pulleys.

[0014] On the other hand, the present invention provides a laser marking device with an integrated water cooling system, including a galvanometer, a field lens, and the integrated water cooling system as described above; the laser generator emits a laser to the galvanometer, the galvanometer is used to reflect the laser so that it reaches the field lens, and the field lens is used to focus the laser transmitted through it.

[0015] Furthermore, the galvanometer and field mirror are disposed inside the first protective shell, and the first protective shell is provided with a third water channel pipe, which is made of a heat-conducting material;

[0016] The first protective shell has a third water inlet and a third water outlet on its side wall. The third water pipe extends sequentially on multiple inner side walls of the first protective shell, and its two ends are respectively connected to the third water inlet and the third water outlet.

[0017] Furthermore, the water cooling device also includes a fourth water pipe, and the second sub-box is provided with a fourth water inlet and a fourth water outlet on its box wall. The outlet of the fourth water pipe is connected to the fourth water outlet, and the inlet of the fourth water pipe is connected to the fourth water inlet.

[0018] The fourth water inlet is connected to the third water outlet, and the fourth water outlet is connected to the third water inlet, thereby forming a second circulating water circuit with the third water pipe inside the first protective shell and the fourth water pipe of the water cooling device.

[0019] Furthermore, the first protective shell is disposed outside the outer casing, the fourth water inlet is connected to the third water outlet via an extension water pipe, and the fourth water outlet is connected to the third water inlet via an extension water pipe.

[0020] The second circulating water circuit formed by the third water pipe inside the first protective shell and the fourth water pipe of the water cooling device is a normal temperature water circuit.

[0021] The first circulating water path formed by the first water pipe inside the first sub-box and the second water pipe of the water cooling device is the cooling water path.

[0022] Furthermore, the output end of the laser generator is connected to the laser connector via an optical fiber, and the laser marking device also includes a collimator, the input end of which is connected to the laser connector, and the output end of which emits the shaped laser to the galvanometer; the collimator is disposed inside the second protective shell and is mounted on the outer wall of the first protective shell via a mounting connector;

[0023] The laser connector has two cooling interfaces and a sub-cooling water channel between them. The collimator mounting connector has two cooling interfaces and a sub-cooling water channel between them. The field lens has two cooling interfaces and a sub-cooling water channel between them. The cooling interfaces of the laser connector, the collimator mounting connector, and the field lens, as well as the third water inlet and the third water outlet on the first protective shell, are connected in a non-directional sequence to the fourth water inlet and the fourth water outlet on the wall of the second sub-box, so that the sub-cooling water channels, the third water channel pipes, and the fourth water channel pipes of the water cooling device of the laser connector, the collimator mounting connector, and the field lens are in the same circulating water channel.

[0024] Preferably, the maximum cooling power of the water-cooling device reaches 2000W, and the maximum operating power of the laser generator is 2000W.

[0025] The beneficial effects of the technical solution provided by this invention are as follows: under the premise of ensuring that the laser marking equipment can operate normally in a high-heat environment, the water cooling device and the laser module are integrated into one unit. The integrated water cooling system greatly reduces the cost and is more convenient to use. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the working principle of the laser marking device provided in an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of a laser marking device provided in an embodiment of the present invention;

[0029] Figure 3 for Figure 2 Rear view;

[0030] Figure 4 This is a first partial structural schematic diagram of the laser marking device provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of a second partial structure of the laser marking device provided in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of a third partial structure of the laser marking device provided in an embodiment of the present invention;

[0033] Figure 7 for Figure 6 The front view;

[0034] Figure 8 A cross-sectional schematic diagram of the protective device for a laser marking device provided in an embodiment of the present invention;

[0035] Figure 9 for Figure 8 Exploded view;

[0036] Figure 10 This is a schematic diagram illustrating the working principle of a laser marking machine provided in an embodiment of the present invention.

[0037] The reference numerals in the attached drawings include: 1-outer casing, 2-laser generator, 3-water cooling device, 41-first water inlet, 42-first water outlet, 43-second water inlet, 44-second water outlet, 45-third water inlet, 46-third water outlet, 47-fourth water inlet, 48-fourth water outlet, 51-first protective shell, 52-second protective shell, 6-third water pipe, 71-laser connector, 72-collimator, 73-mounting connector, 74-optical fiber, 81-first bracket layer, 811-first support platform, 812-wall, 813-air inlet, 82-second bracket layer, 821-second support platform, 83-third bracket layer, 831-third support platform, 84-protective lens, 9-display screen, 10-lighthouse, 11-column, 12-pulley. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0040] In one embodiment of the present invention, an integrated water-cooling system for laser marking equipment is provided, such as... Figure 2 , 3 As shown, the device includes an outer casing 1, a laser generator 2, and a water-cooling device 3. The water-cooling device 3 includes a water pump, a water-cooling block, a heat exchanger, and a cooling fan. The outer casing 1 includes a first sub-casing and a second sub-casing. The laser generator 2 is located within the first sub-casing of the outer casing 1, and the water-cooling device 3 is located within the second sub-casing of the outer casing 1. The bottom of the outer casing 1 is provided with multiple pulleys 12, preferably omnidirectional casters. The position and number of the pulleys 12 are determined according to actual conditions and are not intended to limit the scope of protection of this invention.

[0041] The water-cooling device 3 is used to cool the laser generator 2. A first water pipe is provided inside the first sub-box. The laser generator 2 has a built-in machine base for supporting the laser generator body. The first water pipe is located inside the machine base. Figure 3 As shown, the first sub-box has a first water inlet 41 and a first water outlet 42 on its wall. One end of the first water pipe is connected to the first water inlet 41, and the other end is connected to the first water outlet 42. The water cooling device 3 has a second water pipe. The second sub-box has a second water inlet 43 and a second water outlet 44 on its wall. One end of the second water pipe is connected to the second water inlet 43, and the other end is connected to the second water outlet 44. Specifically, by connecting the first water inlet 41 to the second water outlet 44 and connecting the first water outlet 42 to the second water inlet 43, the first water pipe in the first sub-box and the second water pipe in the water cooling device 3 form a first circulating water path, which cools the laser generator 2. In this embodiment, as... Figure 1 As shown, the first circulating water path is a cold water path.

[0042] The second sub-box also includes a heat insulation layer and an exhaust vent, which communicates with the outside of the outer casing 1 to discharge airflow from the second sub-box. The heat exchanger is located in the area opposite the exhaust vent, and the cooling fan is located in the area opposite the heat exchanger. The water pump, the water-cooling block, and the heat exchanger are arranged in the first circulating water circuit to form a cold water circuit. Furthermore, more preferably, the outer casing also includes a heat insulation layer.

[0043] In addition, the maximum cooling power of the water cooling device 3 reaches 2000W. In this embodiment, the actual cooling power of the water cooling device 3 is set to 1700W.

[0044] In one embodiment of the present invention, a laser marking device with an integrated water-cooling system is provided. The laser marking device includes a laser module, an optical module, and the integrated water-cooling system as described above. The laser module includes a laser generator 2, a laser connector 71, and a control unit. The laser generator 2 is a non-pulsed laser, and the maximum operating power of the laser generator 2 is 2000W. The optical module includes a collimator 72, a galvanometer, and a field lens. The output end of the collimator 72 emits the shaped laser to the galvanometer. The galvanometer reflects the laser so that it reaches the field lens, and the field lens focuses the laser transmitted through it.

[0045] The laser generator 2 is connected to the laser connector 71 via an optical fiber 74, such as Figure 4 , 7 As shown, the laser generator 2, the optical fiber 74, the laser connector 71, and the collimator 72 are connected in sequence. The collimator 72 is mounted on the outer wall of the first protective shell 51 via a mounting connector 73. The laser connector 71, the collimator 72, and the mounting connector 73 are disposed within the second protective shell 52. The galvanometer and the field lens are disposed within the first protective shell 51. It should be noted that, as Figure 5 As shown, the first protective shell 51 and the second protective shell 52 are separately disposed from the outer casing 1. In this embodiment, the first protective shell 51 is disposed outside the outer casing 1. Specifically, the first protective shell 51 and the second protective shell 52 are disposed on the column 11 which is separate from the outer casing 1. The column 11 is preferably a double-sided column. The column 11 is provided with pulleys 12 to facilitate the column 11 to move to any position so as to move the first protective shell 51 and the second protective shell 52 to above the engraving area.

[0046] In one embodiment of the present invention, the water-cooling device 3 is also used to cool the optical module. For example... Figure 3 , 6As shown in Figure 7, the first protective shell 51 is provided with a third water pipe 6 made of thermally conductive material. The first protective shell 51 has a third water inlet 45 and a third water outlet 46 on its wall. The third water pipe 6 extends sequentially on multiple inner side walls of the first protective shell 51, with one end of the third water pipe 6 connected to the third water inlet 45 and the other end connected to the third water outlet 46. The water cooling device 3 is also provided with a fourth water pipe. The second sub-box is also provided with a fourth water inlet 47 and a fourth water outlet 48 on its wall. One end of the fourth water pipe is connected to the fourth water inlet 47 and the other end is connected to the fourth water outlet 48. Specifically, by connecting the third water inlet 45 and the fourth water outlet 48 through an extension pipe, and connecting the third water outlet 46 and the fourth water inlet 47 through an extension pipe, the third water pipe 6 inside the first protective shell 51 and the fourth water pipe of the water cooling device 3 form a second circulating water path, which cools the optical module. It should be noted that in this embodiment, as... Figure 1 As shown, the second circulating water path is a normal temperature water path.

[0047] Furthermore, the laser connector 71 is provided with two cooling interfaces and a sub-cooling water channel between them; the collimator 72 mounting connector 73 is provided with two cooling interfaces and a sub-cooling water channel between them; and the field lens is provided with two cooling interfaces and a sub-cooling water channel between them. The cooling interfaces at the laser connector 71, the cooling interfaces at the collimator 72 mounting connector 73, the cooling interfaces at the field lens, the third water inlet 45, the third water outlet 46, the fourth water inlet 47, and the fourth water outlet 48 are connected in a non-directional sequence so that the sub-cooling water channels at the laser connector 71, the mounting connector 73, the field lens, the third water channel pipe 6, and the fourth water channel pipe are in the same circulating water channel.

[0048] Specifically, in this embodiment, the fourth water outlet 48 is connected to the third water inlet 45, the third water inlet 45 is connected to a cooling interface at the field lens, another cooling interface at the field lens is connected to a cooling interface at the galvanometer, another cooling interface at the galvanometer is connected to a cooling interface at the mounting connector 73 of the collimator 72, another cooling interface at the mounting connector 73 is connected to a cooling interface at the laser connector 71, another cooling interface at the laser connector 71 is connected to the third water outlet 46, and the third water outlet 46 is connected to the fourth water inlet 47. When the above interfaces are connected, the ambient temperature circulating water circulates along the fourth water path pipe, the third water path pipe 6, and each sub-cooling water path to cool the optical module. It should be noted that the connection sequence described in this paragraph is only an example and is not intended to limit the scope of protection of this invention.

[0049] like Figure 1 As shown, the control unit is connected to the laser generator 2 to control parameters such as the operating frequency and power of the laser emitted by the laser generator 2. Furthermore, the control unit is also connected to the galvanometer to control parameters such as the rotation angle, rotation direction, moving speed, and displacement of the galvanometer. Based on these parameters, predefined marking content is engraved on the metallurgical plate. Specifically, in this embodiment, the control unit is electrically connected to the scanning system of the galvanometer via a signal line. The scanning system of the galvanometer controls the rotation angle and rotation direction of the galvanometer according to the control signal received from the control unit. The laser generator 2 works similarly to the galvanometer, and will not be described again here. It should be noted that the connection method can be the signal line as exemplified above, or it can be a communication module, without limiting the scope of protection of this invention.

[0050] Specifically, such as Figure 1 As shown, under the control of the control unit, the laser generator 2 emits laser light with preset operating frequency and power parameters, which is transmitted through the optical fiber 74 and shaped by the collimator 72. The laser light then hits the galvanometer, which reflects the laser light to the field lens. The field lens focuses the transmitted laser light onto the marking area, causing the marking content to appear on the surface of the metallurgical sheet placed in the marking area. The marking content is raised and / or recessed relative to the surface of the metallurgical sheet. It should be noted that the marking content includes not only the production batch number of the metallurgical sheet, but also the logo and anti-counterfeiting number. Therefore, this laser marking equipment can not only perform batch inspection, but also anti-counterfeiting identification. The specific marking content includes, but is not limited to, one or more of raised or recessed text, graphics, numbers, letters, barcodes, and QR codes.

[0051] In one embodiment of the present invention, the laser generator 2 is a continuous laser. Under the control of the control unit, the continuous laser outputs lasers sequentially at a set operating frequency, and the power of the continuously output laser in each cycle is constant at the set output power value.

[0052] Specifically, when a field lens is selected within a focal length range of 200mm to 400mm, the output power of the continuous laser is set within a range of 100W to 800W, the operating frequency of the continuous laser is set within a range of 10kHz to 60kHz, and the rotation speed of the galvanometer is set within a range of 5mm / s to 200mm / s, the engraving content is engraved onto the surface of the metallurgical sheet in a single, raised manner. Preferably, the output power of the continuous laser is 500W, the operating frequency of the continuous laser is 50kHz, and the rotation speed of the galvanometer is 100mm / s.

[0053] When a field lens with a focal length ranging from 150mm to 400mm is selected, the output power of the continuous laser is set within the range of 1400W to 2200W, the operating frequency of the continuous laser is set within the range of 10kHz to 60kHz, and the rotation speed of the galvanometer is set within the range of 800mm / s to 2200mm / s, the engraving content is displayed on the surface of the metallurgical sheet in a single, recessed manner. Of course, to meet different needs and engraving effects, multiple engravings can be performed in the same area, so that the engraving content is recessed relative to the surface of the metallurgical sheet.

[0054] In one embodiment of the present invention, the collimator 72 is a QBH collimator, and the laser transmitted by the optical fiber 74, after being shaped by the collimator 72, can hit the field mirror with a spot diameter ranging from 10 micrometers to 50 micrometers after being reflected by the galvanometer.

[0055] In one embodiment of the present invention, a protective device is provided below the field lens to protect the field lens and prevent splashed metal from damaging the field lens, thereby affecting the marking effect.

[0056] like Figure 8 , 9As shown, the protective device includes a first bracket layer 81, a second bracket layer 82, and a third bracket layer 83, all of which are hollow structures. The first bracket layer 81 is provided with an air inlet 813. The inner sidewall of the first bracket layer 81 has an inwardly protruding first support platform 811, which is used to support the field lens. The first bracket layer 81 also has a vertical wall 812 extending downward from the lower side of the first support platform 811. The second bracket layer 82 is disposed inside the vertical wall 812 and is fixedly connected to the lower surface of the first support platform 811. The inner sidewall of the second bracket layer 82 has an inwardly protruding second support platform 821, which is used to support the protective lens 84. The inner sidewall of the third bracket layer 83 has an inwardly protruding third support platform 831. The first bracket layer 81 and the third bracket layer 83 are interlocked. The vertical wall 812 of the first bracket layer 81 extends into the third bracket layer 83, and the vertical wall 812, the inner sidewall of the third bracket layer 83, and the third support platform 831 all form a gap area.

[0057] like Figure 8 As shown, the protective device also includes a transparent protective lens 84 and an air knife structure disposed on the outer periphery of the protective lens 84. The air knife structure includes the air inlet 813, the interval area formed by the vertical wall 812 and the inner sidewall of the third bracket layer 83, and the interval area formed by the vertical wall 812 and the third support platform 831, so that the airflow input from the air inlet 813 can reach the lower part of the third bracket layer 83 through the air knife structure, that is, the airflow converges towards the center below the protective lens 84.

[0058] In this embodiment, the protective lens 84 is circular; the first bracket layer 81, the second bracket layer 82, and the third bracket layer 83 are all annular; the first support platform 811, the second support platform 821, the third support platform 831, and the vertical wall 812 are all continuously circumferentially arranged, and the outer side of the vertical wall 812 is provided with an inclined surface that slopes inward from top to bottom, and the angle between the inclined surface and the corresponding vertical surface is 60°; the air inlet 813 extends inward from the side wall of the first bracket layer 81, and there are two air inlets 813, which are located at the equidistant points of the circumference of the first bracket layer 81; the second bracket layer 82 is fixedly connected to the lower surface of the first support platform 811 by multiple screws, and the third bracket layer 83 is fixedly connected to the lower surface of the first bracket layer 81 by multiple screws. It should be noted that the first support platform 811 and the second support platform 821 can also be set in a non-continuous interval, the angle between the inclined surface at the vertical wall 812 and the corresponding vertical surface is in the range of 15° to 89°, the number of air inlets 813 can be one or more, and the connection method between the support interlayer and the support platform is not limited to the connection by screws.

[0059] In addition, when the first bracket layer 81 and the third bracket layer 83 are fixedly connected, the second bracket layer 82 can be separated from the first bracket layer 81 for replacing the protective lens 84, which is convenient, quick and saves maintenance time.

[0060] like Figure 2 , 3 As shown, the outer casing 1 is also equipped with a display screen 9, a lighthouse 10, and a pulley 12. In this embodiment, the display screen 9 is a touch screen, through which the user can adjust the relevant parameters of the laser generator 2 and the galvanometer to control the laser marking equipment to work.

[0061] In one embodiment of the present invention, a laser marking machine with an integrated water-cooling system is provided, such as... Figure 10 As shown, the laser marking machine includes a marking control cabinet and a marking output platform. The marking control cabinet includes a human-machine interface, an industrial computer, a laser, and a water-cooling device 3. The marking output platform includes a QBH connector, a galvanometer, a field lens, and an air curtain. The laser is connected to the human-machine interface via the industrial computer and generates laser light, which is output to the galvanometer via the QBH connector. After passing through the galvanometer, the laser light is then output to the field lens to mark the steel.

[0062] The water-cooling device 3 dissipates heat from the laser. The laser is a 1.5KW laser, generated by a start signal from an industrial control computer, and output to the galvanometer via a QBH connector. The galvanometer is a coated galvanometer to meet the requirements of a high-power laser. Marking input is achieved through a human-machine interface. Simultaneously, the industrial control computer converts the markings into drive signals to drive the galvanometer, thus marking the laser. The field lens is a replaceable coated field lens with a 330mm focal length to prevent a large amount of hot sparks generated during marking from splashing onto the field lens. Air curtains are installed on both sides of the field lens at a 10° angle and spray 0.5Mpa of air downwards to prevent a large amount of hot sparks generated during marking from splashing onto the field lens.

[0063] The laser marking machine shortens the marking time to 60-70 seconds, increases the marking depth to 0.01-2 mm, and improves the service life of the field lens through air curtains, coatings, and other methods.

[0064] In one embodiment of the present invention, a marking method is provided, which uses the laser marking equipment or laser marking machine described above to mark the metallurgical plate to be marked, the marking method comprising:

[0065] A non-pulsed laser is controlled to emit laser light at a preset operating frequency and output power, so that the surface of the metallurgical plate placed in the engraving area displays engraving content, wherein the engraving content is raised and / or recessed relative to the surface of the metallurgical plate.

[0066] The non-pulsed laser used in the marking method is based on the same idea as the non-pulsed laser used in the laser marking machine or laser marking equipment described in the above embodiments. All contents of the above laser marking machine or laser marking equipment embodiments are incorporated into this marking method embodiment by means of full reference, and will not be repeated.

[0067] In one embodiment of the present invention, a method for batch inspection of steel plates is provided, comprising the following steps:

[0068] The produced steel plates are sequentially transported to the marking platform;

[0069] The laser marking equipment is used to mark the surface of the corresponding marking area on the steel plate that is transported to the marking platform. The laser marking equipment includes a non-pulsed laser, which outputs laser sequentially at a set working frequency, and the power of the continuously output laser in each cycle is constant at the set output power value, so that the marking content is raised and / or recessed relative to the surface of the steel plate. The marking content includes a preset batch mark.

[0070] A quality inspection is conducted on the steel plates that have been engraved. If the inspection fails, the steel plates that fail the inspection are identified as belonging to the same batch as the steel plates that failed the inspection based on the batch markings engraved on the steel plates.

[0071] The appropriate treatment was carried out after all the steel plates in this batch were inspected.

[0072] It should be noted that the steel plate batch inspection method can control the rotation angle and rotation speed of the galvanometer based on the pre-acquired conveying speed of the steel plate and the current marking content, so as to complete the laser marking during the steel plate conveying process. Alternatively, the marking can be performed by stopping the steel plate conveying process for a preset time. This does not limit the scope of protection of the present invention. In addition, the laser marking equipment used in the steel plate batch inspection method is based on the same idea as the laser marking machine or laser marking equipment described in the above embodiments. All contents of the above laser marking machine or laser marking equipment embodiments are incorporated into this steel plate batch inspection method embodiment by means of full reference, and will not be repeated.

[0073] In one embodiment of the present invention, a method for detecting the authenticity of steel plates is provided, comprising the following steps:

[0074] The produced steel plates are sequentially transported to the marking platform;

[0075] The laser marking equipment is used to mark the surface of the corresponding marking area on the steel plate that is transported to the marking platform. The laser marking equipment includes a non-pulsed laser, which outputs laser sequentially at a set working frequency, and the power of the continuously output laser in each cycle is constant at the set output power value, so that the marking content is raised and / or recessed relative to the surface of the steel plate. The marking content includes a preset LOGO and / or anti-counterfeiting number.

[0076] The steel plates that have been engraved are randomly sampled for authenticity checks. If the logo or anti-counterfeiting number engraved on the steel plate does not match the preset real logo or anti-counterfeiting number, then the steel plate is a counterfeit product.

[0077] The steel plate should be treated accordingly, such as destroyed or scrapped.

[0078] It should be noted that the laser marking equipment used in the steel plate authenticity detection method is based on the same concept as the laser marking machine or laser marking equipment described in the above embodiments. All contents of the above laser marking machine or laser marking equipment embodiments are incorporated into this steel plate authenticity detection method embodiment by means of full reference, and will not be repeated.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0080] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An integrated water-cooling system for laser marking equipment, comprising an outer casing (1), a laser generator (2), and a water-cooling device (3), wherein the water-cooling device (3) includes a water pump, a water-cooling block, a heat exchanger, and a cooling fan, characterized in that, The laser generator (2) is located in the first sub-box inside the outer casing (1), and the water cooling device (3) is located in the second sub-box inside the outer casing (1). The second sub-box is provided with a heat insulation layer. The first sub-box is also provided with a first water pipe, the two ends of which are connected to the first water inlet (41) and the first water outlet (42) opened on the box wall of the first sub-box respectively; the box wall of the second sub-box is provided with a second water inlet (43) and a second water outlet (44), the outlet of the second water pipe of the water cooling device (3) is connected to the second water outlet (44), and the inlet of the second water pipe is connected to the second water inlet (43); The first water inlet (41) is connected to the second water outlet (44), and the first water outlet (42) is connected to the second water inlet (43). Thus, the first water pipe in the first sub-box and the second water pipe of the water cooling device (3) form a first circulating water path. The second sub-box is also provided with an exhaust port that communicates with the outside of the outer box (1) to exhaust the airflow in the second sub-box; It also includes a protective device disposed below the field lens of the laser marking equipment. The protective device includes a first bracket layer (81), a second bracket layer (82), and a third bracket layer (83). The first bracket layer (81), the second bracket layer (82), and the third bracket layer (83) are all hollow structures. The first bracket layer (81) is provided with an air inlet (813). The inner wall of the first bracket layer (81) has an inwardly protruding first support platform (811) for supporting the field lens. The first bracket layer (81) is also provided with a vertical wall (812) extending downward from the lower side of the first support platform (811). The second bracket layer (81) 82) The second bracket layer (82) is disposed on the inner side of the vertical wall (812) and fixedly connected to the lower surface of the first bracket (811). The inner side wall of the second bracket layer (82) has an inwardly protruding second bracket (821) for supporting the protective lens (84). The inner side wall of the third bracket layer (83) has an inwardly protruding third bracket (831). The first bracket layer (81) and the third bracket layer (83) are fastened together. The vertical wall (812) of the first bracket layer (81) extends into the third bracket layer (83), and the vertical wall (812), the inner side wall of the third bracket layer (83), and the third bracket (831) all form a gap area. The protective device also includes a transparent protective lens (84) and an air knife structure disposed on the outer periphery of the protective lens (84). The air knife structure includes the air inlet (813), the spacer area formed by the vertical wall (812) and the inner sidewall of the third bracket layer (83), and the spacer area formed by the vertical wall (812) and the third support platform (831). The spacer area is configured to allow the airflow input from the air inlet (813) to pass through the air knife structure to reach the lower part of the third bracket layer (83) and converge toward the center below the protective lens (84). The first support (811), the second support (821), the third support (831) and the vertical wall (812) are all continuously circumferentially arranged. The outer side of the vertical wall (812) is provided with an inclined surface that slopes inward from top to bottom. The air inlet (813) is not connected to the cavity on the upper side of the protective lens (84). There are two air inlets (813), which are located at the equidistant points of the circumference of the first support layer (81). The inner wall of the third bracket layer (83) is an inclined surface that slopes outward from top to bottom; When the first bracket layer (81) is fixedly connected to the third bracket layer (83), the second bracket layer (82) can be separated from the first bracket layer (81).

2. The integrated water-cooling system for laser marking equipment according to claim 1, characterized in that, The heat exchanger is located in the area opposite to the exhaust vent, and the cooling fan is located in the area opposite to the heat exchanger.

3. The integrated water-cooling system for laser marking equipment according to claim 1, characterized in that, The outer casing (1) is also provided with a heat insulation layer.

4. The integrated water-cooling system for laser marking equipment according to claim 1, characterized in that, The laser generator (2) has a built-in machine base for supporting the laser generator body, and the first water pipe is installed inside the machine base.

5. The integrated water-cooling system for laser marking equipment according to claim 1, characterized in that, The bottom of the outer casing (1) is provided with multiple pulleys (12).

6. A laser marking device with an integrated water-cooling system, characterized in that, It includes a galvanometer, a field mirror, and an integrated water-cooling system as described in any one of claims 1-5; the laser generator (2) emits a laser to the galvanometer, the galvanometer is used to reflect the laser so that it reaches the field mirror, and the field mirror is used to focus the laser transmitted through it.

7. The laser marking device according to claim 6, characterized in that, The galvanometer and field mirror are disposed inside the first protective shell (51), and the first protective shell (51) is provided with a third water pipe (6), which is made of a heat-conducting material; The first protective shell (51) is provided with a third water inlet (45) and a third water outlet (46) on its side wall. The third water pipe (6) extends sequentially on multiple inner side walls of the first protective shell (51), and its two ends are respectively connected to the third water inlet (45) and the third water outlet (46).

8. The laser marking device according to claim 7, characterized in that, The water cooling device (3) also includes a fourth water pipe. The second sub-box is provided with a fourth water inlet (47) and a fourth water outlet (48) on its box wall. The outlet of the fourth water pipe is connected to the fourth water outlet (48), and the inlet of the fourth water pipe is connected to the fourth water inlet (47). The fourth water inlet (47) is connected to the third water outlet (46), and the fourth water outlet (48) is connected to the third water inlet (45). Thus, the third water pipe (6) inside the first protective shell (51) and the fourth water pipe of the water cooling device (3) form a second circulating water path.

9. The laser marking device according to claim 8, characterized in that, The first protective shell (51) is located outside the outer casing (1), the fourth water inlet (47) and the third water outlet (46) are connected by an extension water pipe, and the fourth water outlet (48) and the third water inlet (45) are connected by an extension water pipe; The second circulating water circuit formed by the third water pipe (6) inside the first protective shell (51) and the fourth water pipe of the water cooling device (3) is a normal temperature water circuit; The first circulating water path formed by the first water pipe in the first sub-box and the second water pipe of the water cooling device (3) is the cooling water path.

10. The laser marking device according to claim 8, characterized in that, The output end of the laser generator (2) is connected to the laser connector (71) via an optical fiber. The laser marking device also includes a collimator (72), whose input end is connected to the laser connector (71), and whose output end emits the shaped laser to the galvanometer. The collimator (72) is disposed inside the second protective shell (52) and is installed on the outer wall of the first protective shell (51) via a mounting connector (73). The laser connector (71) is provided with two cooling interfaces and a sub-cooling water channel between them. The mounting connector (73) of the collimator (72) is provided with two cooling interfaces and a sub-cooling water channel between them. The field lens is provided with two cooling interfaces and a sub-cooling water channel between them. The cooling interfaces of the laser connector (71), the mounting connector (73) of the collimator (72), and the field lens, as well as the third water inlet (45) and the third water outlet (46) on the first protective shell (51), are connected in a non-directional sequence to the fourth water inlet (47) and the fourth water outlet (48) on the wall of the second sub-box, so that the laser connector (71), the mounting connector (73) of the collimator (72), the sub-cooling water channel of the field lens, the third water channel pipe (6), and the fourth water channel pipe of the water cooling device (3) are in the same circulating water channel.

11. The laser marking device according to claim 6, characterized in that, The maximum cooling power of the water cooling device (3) reaches 2000W, and the maximum operating power of the laser generator (2) is 2000W.

Images