90-degree alignment automatic correction laser marking device
By introducing a combination of stepper motor and torque servo motor into the laser marking device, the precise positioning and angle adjustment of the laser marking head can be achieved, solving the problem of low positioning accuracy in traditional laser marking machines and improving marking efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional laser marking machines suffer from low positioning accuracy and high operational complexity when high-precision marking is required, especially in the application of printing alignment marks on ITO glass, where it is difficult to frequently adjust and maintain high-precision alignment.
The laser marking device adopts a 90-degree alignment automatic correction. It uses a combination of stepper motor and torque servo motor to achieve precise position control and angle adjustment of the laser marking head. Through the cooperation of hydraulic and pneumatic telescopic rods, it ensures that the laser marking head remains perpendicular to the workpiece after each reset.
It significantly improves the repeatability and production efficiency of marking, reduces human error, enhances marking quality and consistency, and shortens the changeover time between workpieces.
Smart Images
Figure CN224088201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser marking technology, specifically to a 90-degree alignment automatic correction laser marking device. Background Technology
[0002] Laser marking machines, as non-contact marking devices based on the high energy density and excellent monochromaticity of lasers, have been widely used in various fields, including glass panels, electronic products, and automotive parts. Their advantages lie in their high marking speed, durable marking effect, and aesthetically pleasing marking quality. However, some limitations exist in traditional laser marking machine operation.
[0003] Traditional laser marking machines require repositioning the laser head after each print, a process that not only reduces production efficiency but also increases operational complexity and the risk of human error. While existing laser marking machines are typically equipped with limit switches or stops for basic positioning, these mechanical devices have inherent limitations in precision. This is particularly true in applications requiring high-precision marking, such as alignment marking on ITO glass. For ITO glass marking, the marking positions are relatively fixed, located in the middle of both ends of the glass to facilitate accurate marking and alignment by the subsequent CCD alignment system of the printing press. However, traditional laser marking machines often face challenges in accurately aligning these fixed positions, especially in production environments requiring frequent adjustments and maintaining high-precision alignment. Utility Model Content
[0004] To address this issue, this utility model provides a 90-degree alignment automatic correction laser marking device to solve the problem that existing laser marking machines typically have limit switches or blocks on their motion axes. When the worktable or laser head moves to a set position, the limit device is triggered to determine the marking position. This method is simple and direct, but the positioning accuracy is relatively low.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a 90-degree alignment automatic correction laser marking device, comprising a base, a feeding frame provided on the left side of the top of the outer wall of the base, a support frame provided on the top of the outer wall of the base and on the right side of the feeding frame, and a laser marking component provided on the top of the outer wall of the base and on the rear side of the support frame.
[0006] Preferably, support rods are fixed at the four corners of the bottom of the outer wall of the feeding rack, and the bottom of the support rods are fixedly connected to the top of the outer wall of the base. Feeding rollers are installed at the front and rear ends of the inner wall of the feeding rack through a rotating shaft.
[0007] Preferably, pressure rollers are provided on both the front and rear sides of the top of the outer wall of the support frame, and the side ends of the pressure rollers are fixed to the top of the outer wall of the support frame through a rotating shaft. Multiple pressure rollers are evenly arranged in a strip array.
[0008] Preferably, the laser marking component includes a movable guide rail, the bottom end of which is fixed to the top of the outer wall of the base and located on the rear side of the support frame, and a movable slide block is slidably connected to the outer wall side end of the movable guide rail.
[0009] Preferably, a mounting base is provided on the left side of the outer wall of the movable slide, and the right end of the outer wall of the mounting base is fixed to the left side of the outer wall of the movable slide by a hydraulic telescopic rod. A laser marking base is provided on the front end of the outer wall of the movable slide.
[0010] Preferably, a pneumatically controlled telescopic rod is fixed to the rear end of the inner wall of the mounting base, and a movable plate is fixed to the front output end of the pneumatically controlled telescopic rod. The outer wall of the movable plate is slidably connected to the inner wall of the mounting base, and a torque servo motor is fixed to the front end of the outer wall of the movable plate.
[0011] Preferably, the front output shaft of the torque servo motor passes through the front end of the outer wall of the mounting base and is fixedly connected to the corresponding position at the rear end of the outer wall of the laser marking base. A laser marking head for marking is installed at the bottom end of the outer wall of the laser marking base. Preferably, there are two laser marking heads. The dual laser marking head design equipped with this device can complete the entire process from conveying and aligning a piece of glass to marking within 6 seconds, greatly improving work efficiency, reducing operational complexity, and reducing the possibility of human error.
[0012] Preferably, a fixing ring is fixed at both the upper and lower positions of the outer wall side of the laser marking head, a rotating frame is provided on one side of the outer wall of the fixing ring, a connecting rod is rotatably connected to the bottom of the outer wall of the rotating frame, a protective seat is fixed at the end of the connecting rod away from the rotating frame, and the top of the inner wall of the protective seat abuts against the bottom of the outer wall of the laser marking head.
[0013] In this invention, after the laser marking head completes marking a workpiece, the control system immediately activates the configured stepper motor to perform precise position control. The stepper motor, with its unique open-loop control characteristics and high-resolution capability, ensures that every coordinate position of the laser marking head on the base can be accurately positioned. This precise movement mechanism not only improves the repeatability of marking but also significantly shortens the switching time between workpieces, substantially increasing production efficiency. Simultaneously, the system's built-in torque servo motor can not only monitor and adjust its output torque in real time but also precisely control the rotation angle, ensuring that the laser marking head maintains a perfect perpendicular state to the workpiece after each reset. This precise positioning process eliminates errors caused by manual adjustment or mechanical wear in traditional methods, thereby greatly improving the quality and consistency of marking.
[0014] In particular, the technical features of software and circuit programs involved in this utility model are existing technologies. The essence of this technical solution is to improve the structure, composition and connection relationship of the hardware part, and does not involve the improvement of the software program or circuit structure itself.
[0015] The beneficial effects of this utility model are:
[0016] In this invention, after the laser marking head marks the previous workpiece, a stepper motor is used for precise position control, which determines the coordinate position of the laser marking head on the base. The torque servo motor can precisely control its output torque and angle, so that the laser marking head can be quickly reset and set perpendicular to the workpiece. This enables the laser marking head to be quickly positioned for marking, ensuring the marking accuracy of the laser marking head. Attached Figure Description
[0017] Figure 1 This is a partial structural schematic diagram of the present invention viewed from the front.
[0018] Figure 2 This is a partial structural schematic diagram of the present invention from a top view.
[0019] Figure 3 This is a schematic diagram of the laser marking stand in the present invention from the front view.
[0020] Figure 4 This is a three-dimensional structural diagram of the protective base in this utility model.
[0021] In the diagram: 100, base; 110, feeding rack; 120, support rod; 130, feeding roller; 200, support frame; 210, pressure roller; 300, moving guide rail; 310, moving slide; 320, mounting base; 330, pneumatic telescopic rod; 331, moving plate; 340, torque servo motor; 350, laser marking base; 351, laser marking head; 352, fixing ring; 353, connecting rod; 354, protective base. Detailed Implementation
[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0023] See attached document Figures 1-4This utility model provides a 90-degree alignment automatic correction laser marking device, including a base 100. A feeding frame 110 is provided on the top left side of the outer wall of the base 100. Support rods 120 are fixed at the four corners of the bottom of the outer wall of the feeding frame 110. The bottom ends of the support rods 120 are fixedly connected to the top of the outer wall of the base 100. Feeding rollers 130 are installed at the front and rear ends of the inner wall of the feeding frame 110 through rotating shafts. The workpiece to be printed can be conveyed towards the support frame 200 through the feeding rollers 130. The support frame 200 is provided on the top of the outer wall of the base 100 and on the right side of the feeding frame 110. Pressure rollers 210 are provided on both the front and rear sides of the top of the outer wall of the support frame 200. The side ends of the pressure rollers 210 are fixed to the top of the outer wall of the support frame 200 via a rotating shaft. Multiple pressure rollers 210 are evenly arranged in a strip array. The top of the support frame 200 can be flush with the top of the feeding roller 130. The top of the support frame 200 can also be equipped with some balls or rollers as needed to facilitate the conveying of the workpiece. The pressure rollers 210 can be fixed above the workpiece via a rotating shaft, so that the rotation direction of the workpiece can be limited from the top. The pressure rollers 210 and the rotating shaft are rotatably connected.
[0024] A laser marking component is provided at the top of the outer wall of the base 100 and at the rear of the support frame 200. The laser marking component includes a movable guide rail 300. The bottom end of the movable guide rail 300 is fixed to the top of the outer wall of the base 100 and at the rear of the support frame 200. A movable slide block 310 is slidably connected to the side of the outer wall of the movable guide rail 300. The movable guide rail 300 can be driven by a stepper motor to move the movable slide block 310 up and down along the outer wall of the movable guide rail 300. A mounting seat 320 is provided on the left side of the outer wall of the movable slide block 310. The right end of the outer wall of the mounting seat 320 is fixed to the left side of the outer wall of the movable slide block 310 by a hydraulic telescopic rod. The hydraulic telescopic rod allows the mounting seat 320 to move left and right on the left side of the outer wall of the movable slide block 310. A laser marking seat 350 is provided at the front end of the outer wall of the movable slide block 310. When the movable slide block 310 moves up and down, it can drive the mounting seat 320 to move together.
[0025] A pneumatically controlled telescopic rod 330 is fixed to the rear end of the inner wall of the mounting base 320. A movable plate 331 is fixed to the front output end of the pneumatically controlled telescopic rod 330. The outer wall of the movable plate 331 is slidably connected to the inner wall of the mounting base 320. The pneumatically controlled telescopic rod 330 can drive the movable plate 331 to slide back and forth on the inner wall of the mounting base 320. When the movable plate 331 moves, it can drive the torque servo motor 340 to move together. A torque servo motor 340 is fixed to the front end of the outer wall of the movable plate 331. The front output shaft of the servo motor 340 passes through the front end of the outer wall of the mounting base 320 and is fixedly connected to the corresponding position at the rear end of the outer wall of the laser marking base 350. The front end of the outer wall of the mounting base 320 has a clearance hole at the position where it meets the output shaft of the torque servo motor 340. The output shaft can slide and rotate within the inner wall of the clearance hole. When the torque servo motor 340 moves, it can drive the laser marking base 350 to move, thereby adjusting the position of the laser marking base 350. A laser marking head 351 for marking is installed at the bottom of the outer wall of the laser marking head 351. Fixing rings 352 are fixed at both the top and bottom of the outer side of the laser marking head 351. A rotating frame is provided on one side of the outer wall of the fixing rings 352. The fixing rings 352 are used to fix the rotating frame to one side of the laser marking head 351. A connecting rod 353 is rotatably connected to the bottom of the outer wall of the rotating frame. A protective seat 354 is fixed at the end of the connecting rod 353 away from the rotating frame. The top of the inner wall of the protective seat 354 abuts against the bottom of the outer wall of the laser marking head 351. The rotating bracket is designed to facilitate the rotation of the protective seat 354 by the connecting rod 353. The protective seat 354 can protect the bottom of the laser marking head 351 when it is not in use. The inner wall of the protective seat 354 can be provided with a protective layer to protect the bottom of the laser marking head 351. At the same time, the side wall of the protective seat 354 has a slot at the position corresponding to the bottom of the laser marking head 351 for it to be screwed in. The size of the slot is much larger than the size of the bottom of the laser marking head 351.
[0026] In one embodiment of this utility model, the number of laser marking heads 352 is two.
[0027] The usage process of this utility model is as follows: First, the operator can place the workpiece to be printed on the feeding rack 110, so that the pushing component on the left side of the workpiece can cooperate with the feeding roller 130 to transport the workpiece towards the support frame 200 until the workpiece is below the laser marking base 350. Then, the operator can rotate the protective base 354 to the left in advance, and then the laser marking base 350 can control the laser marking head 351 to perform laser marking on the workpiece. During this process, the movable guide rail 300 can drive the movable slide 310 to move up and down, so that the workpiece is properly positioned. The mounting base 320 and the laser marking base 350 can move up and down together, and the torque servo motor 340 can drive the laser marking base 350 to rotate, thereby adjusting the marking angle of the laser marking head 351. The hydraulic telescopic rod and the pneumatic telescopic rod 330 can adjust the position of the laser marking base 350 and the laser marking head 351. After laser marking is completed, the characteristics of the torque servo motor 340 and the stepper motor can quickly reset the angle of the laser marking head 351, which is convenient for the next marking.
[0028] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.
Claims
1. A 90-degree alignment automatic correction laser marking device, comprising a base (100), wherein a feeding frame (110) is provided on the left side of the top of the outer wall of the base (100), and a support frame (200) is provided on the top of the outer wall of the base (100) and on the right side of the feeding frame (110), characterized in that: A laser marking component is provided at the top of the outer wall of the base (100) and at the rear side of the support frame (200); The laser marking component includes a movable guide rail (300), the bottom end of which is fixed to the top of the outer wall of the base (100) and located on the rear side of the support frame (200). A movable slide block (310) is slidably connected to the outer wall side of the movable guide rail (300). A mounting base (320) is provided on the left side of the outer wall of the movable slide (310). The right end of the outer wall of the mounting base (320) is fixed to the left side of the outer wall of the movable slide (310) by a hydraulic telescopic rod. A laser marking base (350) is provided on the front end of the outer wall of the movable slide (310). The rear end of the inner wall of the mounting base (320) is fixed with a pneumatic telescopic rod (330), and the front output end of the pneumatic telescopic rod (330) is fixed with a movable plate (331). The outer wall of the movable plate (331) is slidably connected to the inner wall of the mounting base (320), and the front end of the outer wall of the movable plate (331) is fixed with a torque servo motor (340). The front output shaft of the torque servo motor (340) passes through the front end of the outer wall of the mounting base (320) and is fixedly connected to the corresponding position of the rear end of the outer wall of the laser marking base (350). A laser marking head (351) for marking is installed at the bottom end of the outer wall of the laser marking base (350).
2. The 90-degree alignment automatic correction laser marking device according to claim 1, characterized in that: The feed rack (110) has four support rods (120) fixed at the bottom of the outer wall. The bottom of the support rods (120) is fixedly connected to the top of the outer wall of the base (100). The feed rollers (130) are installed on the front and rear ends of the inner wall of the feed rack (110) through a rotating shaft.
3. The 90-degree alignment automatic correction laser marking device according to claim 1, characterized in that: The support frame (200) is provided with pressure rollers (210) on both the front and rear sides of the top of the outer wall. The side ends of the pressure rollers (210) are fixed to the top of the outer wall of the support frame (200) through a rotating shaft. The multiple pressure rollers (210) are evenly arranged in a strip array.
4. The 90-degree alignment automatic correction laser marking device according to claim 1, characterized in that: The laser marking head (351) has a fixing ring (352) fixed at both the upper and lower positions of the outer wall side. A rotating frame is provided on one side of the outer wall of the fixing ring (352). A connecting rod (353) is rotatably connected to the bottom of the outer wall of the rotating frame. A protective seat (354) is fixed at the end of the connecting rod (353) away from the rotating frame. The top of the inner wall of the protective seat (354) abuts against the bottom of the outer wall of the laser marking head (351).