Three-head laser marking device

Abstract

The present invention provides a three-head laser marking device, including a machine, a conveying mechanism, a first laser, a second laser, a third laser, a flip mechanism and a controller, wherein the conveying mechanism includes a linear guide, a first positioning assembly, a second positioning assembly and a first driving assembly, and the linear guide includes a discharging station, a first marking station and a second marking station. The present invention transports the target workpiece between the discharging station, the first marking station and the second marking station of the linear guide through the first positioning assembly and the second positioning assembly, respectively, so that the third laser can mark both the bottom surface and the side surface of the target workpiece, and when the third laser marks the bottom surface of the target workpiece, the first laser and the second laser can synchronously mark the two opposite sides of the target workpiece, thereby solving the technical problem that the three lasers of the three-head laser marking device in the prior art cannot achieve coordinated operation.

Description

Technical Field

[0001] The invention belongs to the technical field of laser marking devices, and more specifically, relates to a three-head laser marking device. Background Art

[0002] A three-head laser marking device refers to a laser marking machine with three lasers, and the three lasers can respectively mark the two side surfaces and one bottom surface of the target workpiece, that is, they can meet the marking requirements of one side, two sides or three sides of the target workpiece. At present, the three lasers of the three-head laser marking device are generally responsible for their own responsibilities, that is, the laser responsible for marking the bottom surface of the target workpiece cannot be used to mark the side of the target workpiece. This results in two lasers being idle when marking a single side of the target workpiece, and when marking three sides of the target workpiece, only two side surfaces and one bottom surface can be marked step by step, and collaborative operation cannot be achieved, resulting in a waste of production capacity and difficulty in breaking through the bottleneck of production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a three-head laser marking device, including but not limited to solving the technical problem that the three lasers of the three-head laser marking device in the prior art cannot achieve coordinated operation.

[0004] In order to achieve the above-mentioned object, the present invention provides a three-head laser marking device, including a machine platform, a conveying mechanism, a first laser, a second laser, a third laser, a flipping mechanism and a controller, wherein the conveying mechanism, the first laser, the second laser, the third laser, the flipping mechanism and the controller are respectively arranged on the machine platform, the conveying mechanism, the first laser, the second laser, the third laser and the flipping mechanism are controlled by the controller, the first laser and the second laser are symmetrically distributed on opposite sides of the conveying mechanism, the third laser and the second laser are spaced apart on the same side, and the flipping mechanism and the first laser are spaced apart on the same side. The conveying mechanism includes a linear guide, a first positioning component, a second positioning component and a first driving component. The linear guide includes a discharge station, a first marking station and a second marking station which are sequentially distributed along its length direction. The first laser and the second laser are respectively facing the first marking station. The flipping mechanism and the third laser are respectively facing the second marking station. The first positioning component and the second positioning component are respectively arranged on the first driving component to clamp the target workpiece. The first driving component is arranged on the bottom side of the linear guide to drive the first positioning component and the second positioning component to move between the discharge station, the first marking station and the second marking station respectively.

[0005] Optionally, the first driving component includes a first connecting frame, a first driving member and a second driving member, the first driving member is drivingly connected to the first connecting frame to drive the first connecting frame to move along the length direction of the linear guide rail, the second driving member and the first positioning component are respectively arranged on the first connecting frame, and the second driving member is drivingly connected to the second positioning component to drive the second positioning component away from or close to the first positioning component along the length direction of the linear guide rail.

[0006] Optionally, the first positioning assembly includes a first positioning clamp and a third driving member, and the third driving member is arranged on the first connecting frame to drive the first positioning clamp to clamp the target workpiece; the second positioning assembly includes a second positioning clamp and a fourth driving member, and the fourth driving member is fastened to the movable end of the second driving member to drive the second positioning clamp to clamp the target workpiece.

[0007] Optionally, the first positioning clip includes a pair of first positioning clips, which are respectively distributed on opposite sides of the third driving member and are fastened to the two movable ends of the third driving member; the second positioning clip includes a pair of second positioning clips, which are respectively distributed on opposite sides of the fourth driving member and are fastened to the two movable ends of the fourth driving member; the first positioning clip and the second positioning clip are provided with a plurality of positioning grooves arranged side by side.

[0008] Optionally, the maximum separation distance between the second positioning assembly and the first positioning assembly, the spacing between the discharge station and the first marking station, the spacing between the first marking station and the second marking station are consistent with the spacing between the second laser irradiation range and the third laser irradiation range.

[0009] Optionally, the conveying mechanism also includes a limit assembly, which includes a first bracket, a limit plate and a second drive assembly, the first bracket is fixed on the machine platform, the limit plate is arranged on the top side of the linear guide rail to prevent the target workpiece from detaching from the linear guide rail, and the second drive assembly is arranged on the first bracket to drive the limit plate to rise and fall.

[0010] Optionally, the limiting plate is provided with a first photoelectric switch for identifying the position of the target workpiece, and the first driving member is provided with a second photoelectric switch for identifying the discharge station, the first marking station and the second marking station.

[0011] Optionally, the three-head laser marking device also includes a third driving component, which is arranged next to the third laser. The third driving component includes a fifth driving member and a sixth driving member. The fifth driving member is arranged on the machine platform to drive the sixth driving member to move along the width direction of the linear guide rail, and the sixth driving member is arranged on the fifth driving member to drive the third laser to rise and fall.

[0012] Optionally, the flipping mechanism includes a second bracket, a second connecting frame, a third positioning assembly, a seventh driving member and an eighth driving member, the second bracket is fixed on the machine platform, the third positioning assembly is movably connected to the second connecting frame to clamp the target workpiece, the seventh driving member is arranged on the second bracket to drive the second connecting frame to rise and fall, and the eighth driving member is arranged on the second connecting frame to drive the third positioning assembly to rotate 90°.

[0013] Optionally, the third positioning assembly includes a third positioning clamp and a ninth driving member, and the ninth driving member is movably connected to the second connecting frame to drive the third positioning clamp to clamp the target workpiece.

[0014] The beneficial effect of the three-head laser marking device provided by the present invention is that two positioning components, a flip mechanism and three lasers are used to cooperate, and the target workpiece is transported between the discharging station, the first marking station and the second marking station of the linear guide through the first positioning component and the second positioning component respectively, so that the third laser can mark both the bottom surface and the side surface of the target workpiece, and when the third laser marks the bottom surface of the target workpiece, the first laser and the second laser can synchronously mark the two opposite side surfaces of the target workpiece, thereby effectively solving the technical problem that the three lasers of the three-head laser marking device in the prior art cannot achieve coordinated operation, giving full play to the working efficiency of the three lasers, and improving the production efficiency of the three-head laser marking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A three-dimensional schematic diagram of a three-head laser marking device provided in an embodiment of the present invention;

[0017] Figure 2 A schematic top view of a three-head laser marking device provided in an embodiment of the present invention;

[0018] Figure 3 A partial three-dimensional schematic diagram of a three-head laser marking device provided in an embodiment of the present invention;

[0019] Figure 4 for Figure 3 A three-dimensional exploded schematic diagram of the first positioning assembly, the second positioning assembly and the first driving assembly of the conveying mechanism;

[0020] Figure 5 A three-dimensional exploded schematic diagram of a flip mechanism in a three-head laser marking device provided in an embodiment of the present invention.

[0021] Among them, the reference numerals in the figure are:

[0022] 100—three-head laser marking device, 200—target workpiece;

[0023] 1—machine platform, 2—transport mechanism, 3—first laser, 4—second laser, 5—third laser, 6—turning mechanism, 7—third driving assembly;

[0024] 21—linear guide rail, 22—first positioning assembly, 23—second positioning assembly, 24—first driving assembly, 25—limiting assembly, 211—discharging station, 212—first marking station, 213—second marking station, 221—first positioning clamp, 222—third driving member, 231—second positioning clamp, 232—fourth driving member, 241—first connecting frame, 242—first driving member, 243—second driving member, 244—second photoelectric switch, 251—first bracket, 252—limiting plate, 253—second driving assembly, 254—first photoelectric switch, 2210—first positioning clip, 2310—second positioning clip;

[0025] 61—second bracket, 62—second connecting frame, 63—third positioning assembly, 64—seventh driving member, 65—eighth driving member, 66—third photoelectric switch, 621—support member, 622—rotating member, 631—third positioning clamp, 632—ninth driving member;

[0026] 71 - fifth driving member, 72 - sixth driving member. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] It should be noted that when a component is referred to as being "fixed on" or "provided on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component. When a component is referred to as being "electrically connected" to another component, it can be a conductor electrical connection, a radio connection, or other various connection methods that can transmit electrical signals. The orientation or position relationship indicated by the terms "top", "bottom", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first", "second", etc. are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The term "multiple" means two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 3The three-head laser marking device 100 provided by the present invention includes a machine 1, a conveying mechanism 2, a first laser 3, a second laser 4, a third laser 5, a flipping mechanism 6 and a controller (not shown), wherein the conveying mechanism 2, the first laser 3, the second laser 4, the third laser 5, the flipping mechanism 6 and the controller are respectively arranged on the machine 1, specifically, the conveying mechanism 2, the first laser 3, the second laser 4, the third laser 5, the flipping mechanism 6 are arranged on the top surface of the machine 1, and the controller is arranged inside the machine 1; the conveying mechanism 2, the first laser 3, the second laser 4, the third laser 5 and the flipping mechanism 6 are controlled by the controller, that is, the controller is used to control the conveying mechanism 2, the first laser 3, the second laser 4, the third laser 5 and the flipping mechanism 6 to operate according to a preset program; the first laser 3 and the second laser 4 are symmetrically distributed on opposite sides of the conveying mechanism 2, the third laser 5 and the second laser 4 are spaced apart on the same side, and the flipping mechanism 6 is arranged on the same side. The rotating mechanism 6 and the first laser 3 are spaced apart on the same side; the conveying mechanism 2 includes a linear guide 21, a first positioning assembly 22, a second positioning assembly 23 and a first driving assembly 24, wherein the linear guide 21 includes a discharging station 211, a first marking station 212 and a second marking station 213, the discharging station 211, the first marking station 212 and the second marking station 213 are sequentially distributed along the length direction of the linear guide 21, the first laser 3 and the second laser 4 are respectively facing the first marking station 212, the flipping mechanism 6 and the third laser 5 are respectively facing the second marking station 213, the first positioning assembly 22 and the second positioning assembly 23 are respectively arranged on the first driving assembly 24 for clamping the target workpiece 200, and the first driving assembly 24 is arranged on the bottom side of the linear guide 21 for driving the first positioning assembly 22 and the second positioning assembly 23 to move between the discharging station 211, the first marking station 212 and the second marking station 213 respectively.

[0030] When the three-head laser marking device 100 is started, first, the target workpiece 200 is output to the linear rail 21 by the loading device connected to the three-head laser marking device 100, and multiple target workpieces 200 are arranged one by one and close to each other on the linear rail 21 until the target workpieces 200 are filled at the discharge station 211; when it is necessary to mark one side of the target workpiece 200 (i.e., single-sided marking), the controller simultaneously starts the first positioning component 22 and the second positioning component 23, and the first positioning component 22 and the second positioning component 23 respectively clamp a group of target workpieces 200 on the discharge station 211, and then the controller starts the first driving component 24, and the first driving component 24 drives the first positioning component 22 to transport a group of target workpieces 200 to the first marking station 212 and drives the second positioning component 23 transports a group of target workpieces 200 to the second marking station 213, then the first positioning assembly 22 and the second positioning assembly 23 release the two groups of target workpieces 200 respectively, then the first driving assembly 24 moves the first positioning assembly 22 and the second positioning assembly 23 to the bottom side of the discharge station 211, and at the same time the controller starts the second laser 4 and the third laser 5, the second laser 4 and the third laser 5 respectively complete the marking on the side of the target workpiece 200 on the first marking station 212 and the side of the target workpiece 200 on the second marking station 213, and then repeats the above steps, so that the marking task of two groups of target workpieces 200 can be achieved in one single-sided marking cycle, and compared with the existing three-head laser marking technology, the production efficiency of the three-head laser marking device 100 can be improved by 100%;When it is necessary to mark the two side surfaces and the bottom surface of the target workpiece 200 (i.e., three-sided marking), the controller simultaneously starts the first positioning assembly 22 and the second positioning assembly 23, and the first positioning assembly 22 and the second positioning assembly 23 respectively clamp a group of target workpieces 200 on the discharge station 211, and then the controller starts the first driving assembly 24, and the first driving assembly 24 drives the second positioning assembly 23 to transport a group of target workpieces 200 to the first marking station 212, and then the second positioning assembly 23 releases the target workpiece 200, and then the controller simultaneously starts the first laser 3 and the second laser 4, and the first laser 3 and the second laser The optical device 4 completes marking on two opposite sides of the target workpiece 200 on the first marking station 212, and then the first positioning component 22 clamps a group of target workpieces 200 on the discharge station 211, and the second positioning component 23 clamps a group of target workpieces 200 that have completed double-sided marking on the first marking station 212. Then the first driving component 24 drives the first positioning component 22 to transport a group of target workpieces 200 to the first marking station 212 and drives the second positioning component 23 to transport a group of target workpieces 200 that have completed double-sided marking to the second marking station 213. Then the first positioning component 22 and the second positioning component 23 are driven to move the target workpieces 200 to the first marking station 212. The first drive assembly 24 then moves the first positioning assembly 22 to the bottom side of the discharge station 211 and the second positioning assembly 23 to the bottom side of the first marking station 212. At the same time, the controller starts the first laser 3, the second laser 4, the third laser 5 and the flip mechanism 6. The first laser 3 and the second laser 4 respectively complete the marking on the two opposite sides of the target workpiece 200 on the first marking station 212 (i.e., complete the double-sided marking process). The flip mechanism 6 flips the target workpiece 200 on the second marking station 213 so that the bottom surface of the target workpiece 200 is Towards the third laser 5, the third laser 5 completes marking on the bottom surface of the group of target workpieces 200, and then repeats the above steps in sequence starting from the step of "the first positioning component 22 clamps a group of target workpieces 200 on the material arrangement station 211, and the second positioning component 23 clamps a group of target workpieces 200 that have completed double-sided marking on the first marking station 212". In this way, the three-sided marking task of a group of target workpieces 200 and the double-sided marking process of a group of target workpieces 200 can be achieved in one three-sided marking cycle. Compared with the existing three-head laser marking technology, the production efficiency of the three-head laser marking device 100 can be increased by 50%. ;

[0031] The three-head laser marking device 100 provided by the present invention adopts two positioning components, a flip mechanism 6 and three lasers to cooperate, and the target workpiece 200 is transported between the discharge station 211, the first marking station 212 and the second marking station 213 of the linear guide 21 through the first positioning component 22 and the second positioning component 23, so that the third laser 5 can mark the bottom surface of the target workpiece 200 and the side surface of the target workpiece 200, and when the third laser 5 marks the bottom surface of the target workpiece 200, the first laser 3 and the second laser 4 can synchronously mark the two opposite side surfaces of the target workpiece 200, thereby effectively solving the technical problem that the three lasers of the three-head laser marking device in the prior art cannot achieve coordinated operation, giving full play to the working efficiency of the three lasers, and improving the production efficiency of the three-head laser marking device.

[0032] Optionally, see Figure 3 and Figure 4As a specific embodiment of the three-head laser marking device provided by the present invention, the first driving component 24 includes a first connecting frame 241, a first driving member 242 and a second driving member 243, wherein the first driving member 242 is transmission-connected to the first connecting frame 241, and is used to drive the first connecting frame 242 to move along the length direction of the linear guide rail 21, the second driving member 243 and the first positioning component 22 are respectively arranged on the first connecting frame 241, and the second driving member 243 is transmission-connected to the second positioning component 23, and is used to drive the second positioning component 23 away from or close to the first positioning component 22 along the length direction of the linear guide rail 21. Specifically, the first driving member 242 may be an electric slide and is electrically connected to the controller, the second driving member 243 may be a cylinder, the controller controls the second driving member 243 through a solenoid valve, one end of the first connecting frame 241 is fastened to the slider of the first driving member 242, the second driving member 243 and the first positioning assembly 22 are fastened to the other end of the first connecting frame 241 respectively, the second positioning assembly 23 is connected to the first connecting frame 241 through the second driving member 243, and the second positioning assembly 23 is fastened to the movable end of the second driving member 243. When the first driving member 242 is started, the first positioning assembly 22 and the second positioning assembly 23 move along the length direction of the linear guide 21 with the first connecting frame 241; when the second driving member 243 is positively inflated, the second positioning assembly 23 moves away from the first positioning assembly 22 along the length direction of the linear guide 21; when the second driving member 243 is reversely inflated, the second positioning assembly 23 approaches the first positioning assembly 22 along the length direction of the linear guide 21. Here, the maximum separation distance between the second positioning assembly 23 and the first positioning assembly 22 is equal to the spacing between the first marking station 212 and the second marking station 213, so that it can be ensured that the first positioning assembly 22 and the second positioning assembly 23, driven by the first driving assembly 24, synchronously deliver the two groups of target workpieces 200 to the first marking station 212 and the second marking station 213, respectively, thereby improving the coordination efficiency of the second laser 4 and the third laser 5. Of course, according to specific circumstances and needs, in other embodiments of the present invention, the second driving member 243 can also be an electric cylinder or a hydraulic cylinder, etc., which is not limited here.

[0033] In the embodiment provided by the present invention, the maximum separation distance between the second positioning assembly 23 and the first positioning assembly 22, the spacing between the material discharging station 211 and the first marking station 212, and the spacing between the first marking station 212 and the second marking station 213 are consistent with the spacing between the irradiation range of the second laser 4 and the irradiation range of the third laser 5. In this way, when the three-head laser marking device 100 performs a three-sided marking task, it is only necessary to maintain the maximum separation distance between the first positioning assembly 22 and the second positioning assembly 23 after one drive of the second driving member 243, and under the drive of the first driving member 242, a group of target workpieces 200 located on the arrangement station 211 and close to the first marking station 212 can be continuously and accurately delivered to the first marking station 212, and a group of target workpieces 200 located on the first marking station 212 can be continuously and accurately delivered to the second marking station 213, thereby saving the trouble of repeated positioning and improving the production efficiency of the three-head laser marking device 100.

[0034] Optionally, see Figure 4As a specific embodiment of the three-head laser marking device provided by the present invention, the first positioning assembly 22 includes a first positioning clamp 221 and a third driving member 222, wherein the third driving member 222 is arranged on the first connecting frame 241, and is used to drive the first positioning clamp 221 to clamp the target workpiece 200; the second positioning assembly 23 includes a second positioning clamp 231 and a fourth driving member 232, wherein the fourth driving member 232 is fastened to the movable end of the second driving member 243, and is used to drive the second positioning clamp 231 to clamp the target workpiece 200. Specifically, the structural shape of the first positioning clamp 221 is consistent with the structural shape of the second positioning clamp 231. The first positioning clamp 221 includes a pair of first positioning clips 2210, and the pair of first positioning clips 2210 are respectively distributed on the opposite sides of the third driving member 222. The third driving member 222 can be a double-acting cylinder, which includes two movable ends. The controller controls the third driving member 222 through an electromagnetic valve, and the pair of first positioning clips 2210 are respectively fastened to the two movable ends of the third driving member 222; the second positioning clamp 231 includes a pair of second positioning clips 2310, and the pair of second positioning clips 2310 are respectively distributed on the opposite sides of the fourth driving member 232. The fourth driving member 232 can be a double-acting cylinder, which includes two movable ends. The controller controls the fourth driving member 232 through an electromagnetic valve, and the pair of second positioning clips 2310 are respectively fastened to the two movable ends of the fourth driving member 232. The third driving member 222 and the fourth driving member 232 are located on the bottom side of the linear guide 21. When there is no need to clamp the target workpiece 200, the first positioning clamp 221 and the second positioning clamp 231 are located on the bottom side of the linear guide 21. When it is necessary to clamp the target workpiece 200, a pair of first positioning clamps 2210 are driven by the third driving member 222 to flip upward 90° from the opposite sides of the linear guide 21 to clamp the target workpiece 200 located at the top of the linear guide 21. A pair of second positioning clamps 2310 are driven by the fourth driving member 232 to flip upward 90° from the opposite sides of the linear guide 21 to clamp the target workpiece 200 located at the top of the linear guide 21, thereby completing the clamping task of the first positioning component 22 and the second positioning component 23. A plurality of positioning grooves arranged side by side are provided on the first positioning clamp 2210 and the second positioning clamp 2310, so that the first positioning assembly 22 and the second positioning assembly 23 can clamp a plurality of target workpieces 200 at a time, and the number of positioning grooves is matched with the irradiation range of the first laser 3, the second laser 4 and the third laser 5, so that the marking of all target workpieces 200 on the first marking station 212 and the second marking station 213 can be completed within one scanning cycle of the first laser 3, the second laser 4 and the third laser 5, thereby effectively improving the production efficiency of the three-head laser marking device 100.Of course, according to specific circumstances and requirements, in other embodiments of the present invention, the third driving member 222 and the fourth driving member 232 may also be electric cylinders or hydraulic cylinders, etc., respectively, which is not the only limitation here.

[0035] Optionally, see Figure 3 As a specific embodiment of the three-head laser marking device provided by the present invention, the conveying mechanism 2 also includes a limiting component 25, and the limiting component 25 includes a first bracket 251, a limiting plate 252 and a second driving component 253, wherein the first bracket 251 is fixed on the machine table 1, the limiting plate 252 is arranged on the top side of the linear guide rail 21, and is used to prevent the target workpiece 200 from detaching from the linear guide rail 21, and the second driving component 253 is arranged on the first bracket 251, and is used to drive the limiting plate 252 to rise and fall. Specifically, the first bracket 251 is fixed on the top surface of the machine 1, the limit plate 252 is blocked on the top side of the discharge station 211, and the second driving assembly 253 includes a screw, a nut and a handwheel, wherein the nut is fixed on the first bracket 251, the screw is passed through the nut and is threadedly connected to the nut, the handwheel is fastened to the top end of the screw, and the limit plate 252 is fastened to the bottom end of the screw. When the handwheel is rotated, the screw can drive the limit plate 252 to rise or fall, thereby adjusting the distance between the limit plate 252 and the linear guide 21 to adapt to target workpieces 200 of different heights, thereby preventing the target workpiece 200 from detaching from the linear guide 21 due to jumping during the discharge process, thereby ensuring the normal operation of the three-head laser marking device 100.

[0036] Optionally, see Figure 3 and Figure 4As a specific embodiment of the three-head laser marking device provided by the present invention, a first photoelectric switch 254 for identifying the position of the target workpiece 200 is arranged on the limit plate 252, and a second photoelectric switch 244 for identifying the discharge station 211, the first marking station 212 and the second marking station 213 is arranged on the first driving member 242. Specifically, at least two first photoelectric switches 252 are arranged on the limit plate 252, and the two first photoelectric switches 252 are respectively distributed at one end of the limit plate 252 close to the loading device and the other end close to the first marking station 212, so as to ensure that the loading device continuously outputs the target workpiece 200 until the target workpiece 200 fills the discharge station 211, and the position of the target workpiece 200 closest to the first marking station 212 does not exceed the discharge station 211; three second photoelectric switches 244 are arranged on the first driving member 242, and the position of the first second photoelectric switch 244 corresponds to the midpoint of the discharge station 211, and the position of the second second photoelectric switch 244 corresponds to the rear end of the discharge station 211. Correspondingly, the position of the third second photoelectric switch 244 corresponds to the rear end of the first marking station 212, so as to ensure that the first positioning component 22 and the second positioning component 23 clamp the same number of target workpieces 200 on the nesting station 211, and the first positioning component 22 accurately delivers a group of target workpieces 200 on the nesting station 211 to the first marking station 212, and the second positioning component 23 accurately delivers a group of target workpieces 200 on the nesting station 211 to the first marking station 212, or accurately delivers a group of target workpieces 200 at the first marking station 212 to the second marking station 213, or accurately delivers a group of target workpieces 200 on the nesting station 211 to the second marking station 213. It can be understood that the discharge station 211 can accommodate a number of target workpieces 200 equal to the sum of the number of limiting grooves of the first positioning clip 2210 and the number of limiting grooves of the second positioning clip 2310, and the first marking station 212 and the second marking station 213 can respectively accommodate a number of target workpieces 200 equal to the number of limiting grooves of the first positioning clip 2210 or the number of limiting grooves of the second positioning clip 2310.

[0037] Optionally, see Figure 3As a specific embodiment of the three-head laser marking device provided by the present invention, the three-head laser marking device 100 also includes a third driving assembly 7, which is arranged beside the third laser 5. The third driving assembly 7 includes a fifth driving member 71 and a sixth driving member 72, wherein the fifth driving member 71 is arranged on the machine table 1, and is used to drive the sixth driving member 72 to move along the width direction of the linear guide rail 21, and the sixth driving member 72 is arranged on the fifth driving member 71, and is used to drive the third laser 5 to rise and fall. Specifically, the fifth driving member 71 and the sixth driving member 72 can be electric slides, respectively, and are electrically connected to the controller. The fifth driving member 71 is horizontally arranged on the top surface of the machine 1, and the sixth driving member 72 is vertically arranged on the slider of the fifth driving member 71. The third laser 5 is fastened to the slider of the sixth driving member 72. When the controller starts the fifth driving member 71, the fifth driving member 71 can drive the third laser 5 to approach the linear guide 21 or away from the linear guide 21 through the sixth driving member 72. When the controller starts the sixth driving member 72, the sixth driving member 72 can drive the third laser 5 to rise or fall, so as to help control the focus of the third laser 5 to automatically align with the target marking area. It can be understood that the width direction of the linear guide 21 is perpendicular to the length direction of the linear guide 21.

[0038] Optionally, see Figure 4 and Figure 5As a specific embodiment of the three-head laser marking device provided by the present invention, the flip mechanism 6 includes a second bracket 61, a second connecting frame 62, a third positioning assembly 63, a seventh driving member 64 and an eighth driving member 65, wherein the second bracket 61 is fixed on the machine table 1, the third positioning assembly 63 is movably connected to the second connecting frame 62, and is used to clamp the target workpiece 200, the seventh driving member 64 is arranged on the second bracket 61, and is used to drive the second connecting frame 62 to rise and fall, and the eighth driving member 65 is arranged on the second connecting frame 62, and is used to drive the third positioning assembly 63 to rotate 90°. Specifically, the second bracket 61 is fixed on the top surface of the machine 1, and the second connecting frame 62 includes a supporting member 621 and a rotating member 622. The rotating member 622 is rotatably connected to the supporting member 621. Two third photoelectric switches 66 are arranged on the supporting member 621 for identifying the rotation angle of the rotating member 622. The third positioning assembly 63 is controlled by the controller and is tightly connected to the rotating member 622. The seventh driving member 64 can be a cylinder. The controller controls the seventh driving member 64 through an electromagnetic valve. The supporting member 621 is tightly connected to the movable end of the seventh driving member 64. The eighth driving member 65 can be a motor and is electrically connected to the controller. The rotating member 622 is tightly connected to the output shaft of the eighth driving member 65. When the three-head laser marking device 100 needs to complete the three-sided marking task and the target workpiece 200 is sent to the second marking station 213, the controller first starts the seventh driving member 64, and the seventh driving member 64 drives the third positioning assembly 63 to descend through the second connecting frame 62, and then the controller starts the third positioning assembly 63, and the third positioning assembly 63 clamps the target workpiece 200, and then the seventh driving member 64 drives the third positioning assembly 63 to drive the target workpiece 200 to rise, and then the controller starts the eighth driving member 65, and the eighth driving member 65 drives the third positioning assembly 63 and the target workpiece 200 to rotate 90° through the rotating member 622, so that the bottom surface of the target workpiece 200 faces the third laser 5, thereby achieving the bottom surface marking of the target workpiece 200. Of course, according to specific circumstances and needs, in other embodiments of the present invention, the seventh driving member 64 can also be an electric cylinder or a hydraulic cylinder, etc., which is not limited here.

[0039] Optionally, see Figure 5As a specific embodiment of the three-head laser marking device provided by the present invention, the third positioning assembly 63 includes a third positioning clamp 631 and a ninth driving member 632, wherein the ninth driving member 632 is movably connected to the second connecting frame 62, and is used to drive the third positioning clamp 631 to clamp the target workpiece 200. Specifically, the third positioning clamp 631 includes a pair of third positioning clips, each of which is provided with a plurality of positioning grooves arranged side by side, and the number of positioning grooves of the third positioning clip is consistent with the number of positioning grooves of the first positioning clip 2210 or the number of positioning grooves of the second positioning clip 2310, and the ninth driving member 632 can be a double-acting cylinder, which includes two movable ends, and the controller controls the ninth driving member 632 through an electromagnetic valve, and a pair of third positioning clips are respectively fastened to the two movable ends of the ninth driving member 632. When the target workpiece 200 needs to be clamped, the controller starts the ninth driving member 632, and the ninth driving member 632 first causes the pair of third positioning clips to separate along the width direction of the linear guide rail 21, and after the target workpiece 200 vertically extends into the gap between the pair of third positioning clips, the ninth driving member 632 then drives the pair of third positioning clips to close and clamp the target workpiece 200, thereby completing the clamping task of the third positioning assembly 63. Of course, according to specific circumstances and needs, in other embodiments of the present invention, the ninth driving member 632 can also be an electric cylinder or a hydraulic cylinder, etc., which is not limited here.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-head laser marking device, comprising a machine platform, a conveying mechanism, a first laser, a second laser, a third laser, a flipping mechanism and a controller, wherein the conveying mechanism, the first laser, the second laser, the third laser, the flipping mechanism and the controller are respectively arranged on the machine platform, and the conveying mechanism, the first laser, the second laser, the third laser and the flipping mechanism are controlled by the controller. Features: The first laser and the second laser are symmetrically distributed on opposite sides of the conveying mechanism, the third laser and the second laser are spaced apart on the same side, and the flip mechanism and the first laser are spaced apart on the same side; the conveying mechanism includes a linear guide, a first positioning assembly, a second positioning assembly and a first driving assembly, the linear guide includes a discharge station, a first marking station and a second marking station sequentially distributed along its length direction, the first laser and the second laser are respectively facing the first marking station, the flip mechanism and the third laser are respectively facing the second marking station, the first positioning assembly and the second positioning assembly are respectively arranged on the first driving assembly to clamp the target workpiece, and the first driving assembly is arranged on the bottom side of the linear guide to drive the first positioning assembly and the second positioning assembly to move between the discharge station, the first marking station and the second marking station respectively; The maximum separation distance between the second positioning assembly and the first positioning assembly, the distance between the discharge station and the first marking station, the distance between the first marking station and the second marking station are consistent with the distance between the second laser irradiation range and the third laser irradiation range; The conveying mechanism also includes a limit assembly, and the limit assembly includes a first bracket, a limit plate and a second drive assembly, the first bracket is fixed to the machine platform, the limit plate is arranged on the top side of the linear guide rail to prevent the target workpiece from escaping from the linear guide rail, and the second drive assembly is arranged on the first bracket to drive the limit plate to rise and fall; wherein, the first bracket is fixed to the top surface of the machine platform, the limit plate is blocked on the top side of the discharging station, and the second drive assembly includes a screw, a nut and a handwheel, the nut is fixed to the first bracket, the screw is penetrated on the nut and is threadedly connected with the nut, the handwheel is fastened to the top end of the screw, and the limit plate is fastened to the bottom end of the screw, and when the handwheel is rotated, the screw drives the limit plate to rise or fall to adjust the distance between the limit plate and the linear guide rail; The first driving assembly includes a first connecting frame, a first driving member and a second driving member, the first driving member is connected to the first connecting frame to drive the first connecting frame to move along the length direction of the linear guide rail, the second driving member and the first positioning assembly are respectively arranged on the first connecting frame, and the second driving member is connected to the second positioning assembly to drive the second positioning assembly to move away from or approach the first positioning assembly along the length direction of the linear guide rail; A first photoelectric switch for identifying the position of the target workpiece is provided on the limit plate, and a second photoelectric switch for identifying the discharge station, the first marking station and the second marking station is provided on the first driving member; wherein at least two of the first photoelectric switches are provided on the limit plate, and the two first photoelectric switches are respectively distributed at one end of the limit plate close to the loading device and the other end close to the first marking station; three second photoelectric switches are provided on the first driving member, the position of the first second photoelectric switch corresponds to the midpoint of the discharge station, the position of the second second photoelectric switch corresponds to the rear end of the discharge station, and the position of the third second photoelectric switch corresponds to the rear end of the first marking station.

2. The three-head laser marking device as claimed in claim 1, Features: The first positioning assembly includes a first positioning clamp and a third driving member, and the third driving member is arranged on the first connecting frame to drive the first positioning clamp to clamp the target workpiece; the second positioning assembly includes a second positioning clamp and a fourth driving member, and the fourth driving member is fastened to the movable end of the second driving member to drive the second positioning clamp to clamp the target workpiece.

3. The three-head laser marking device as claimed in claim 2, Features: The first positioning clip includes a pair of first positioning clips, which are respectively distributed on the opposite sides of the third driving member and are fastened to the two movable ends of the third driving member; the second positioning clip includes a pair of second positioning clips, which are respectively distributed on the opposite sides of the fourth driving member and are fastened to the two movable ends of the fourth driving member; the first positioning clip and the second positioning clip are provided with a plurality of positioning grooves arranged side by side.

4. The three-head laser marking device according to claim 1, Features: It also includes a third driving component, which is arranged beside the third laser. The third driving component includes a fifth driving member and a sixth driving member. The fifth driving member is arranged on the machine platform to drive the sixth driving member to move along the width direction of the linear guide rail, and the sixth driving member is arranged on the fifth driving member to drive the third laser to rise and fall.

5. The three-head laser marking device according to claim 1, Features: The flipping mechanism includes a second bracket, a second connecting frame, a third positioning component, a seventh driving member, and an eighth driving member. The second bracket is fixed to the machine table. The third positioning component is movably connected to the second connecting frame to clamp the target workpiece. The seventh driving member is disposed on the second bracket to drive the second connecting frame to move up and down. The eighth driving member is disposed on the second connecting frame to drive the third positioning component to rotate 90°.

6. The three-head laser marking device according to claim 5, characterized in that: The third positioning component includes a third positioning clamp and a ninth driving member. The ninth driving member is movably connected to the second connecting frame to drive the third positioning clamp to clamp the target workpiece.

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