WO2018176879A1 - Machine de marquage au laser, procédé de réglage de la distance entre la tête de balayage et l'objet pour le marquage, et procédé d'alignement automatique de machine de marquage - Google Patents

Machine de marquage au laser, procédé de réglage de la distance entre la tête de balayage et l'objet pour le marquage, et procédé d'alignement automatique de machine de marquage Download PDF

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Publication number
WO2018176879A1
WO2018176879A1 PCT/CN2017/113288 CN2017113288W WO2018176879A1 WO 2018176879 A1 WO2018176879 A1 WO 2018176879A1 CN 2017113288 W CN2017113288 W CN 2017113288W WO 2018176879 A1 WO2018176879 A1 WO 2018176879A1
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WO
WIPO (PCT)
Prior art keywords
laser
marking
controller
component
scanning head
Prior art date
Application number
PCT/CN2017/113288
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English (en)
Chinese (zh)
Inventor
徐强
Original Assignee
广州新可激光设备有限公司
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Publication date
Application filed by 广州新可激光设备有限公司 filed Critical 广州新可激光设备有限公司
Publication of WO2018176879A1 publication Critical patent/WO2018176879A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/361—Removing material for deburring or mechanical trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • B23K26/046—Automatically focusing the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • B23K26/046—Automatically focusing the laser beam
    • B23K26/048—Automatically focusing the laser beam by controlling the distance between laser head and workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns

Definitions

  • the invention belongs to the technical field of laser marking, and particularly relates to a laser marking machine, a method for adjusting a distance between a scanning head of a laser marking machine and a marking object, and an automatic focusing method of the marking machine.
  • the laser marking machine is a light and mechatronics device that combines laser technology and computer technology.
  • the application of laser marking technology in industry at home and abroad is being paid more and more attention.
  • Various new marking equipments are emerging one after another. It is replacing the traditional marking method with its unique advantages. It can be used in various mechanical parts and electronic elements. Marks are printed on the surface of various objects such as devices, integrated circuit modules, instruments, and meters.
  • the working principle is that the laser generates laser light, and after being focused by the focusing lens, it is irradiated onto the surface of the marking object, and the marking effect is only ideal when the marking object is located at the focal length position.
  • the prior art manually adjusts and focuses the marking machine manually. The manual adjustment reduces the working efficiency of the marking machine, and the adjustment error is large, which reduces the precision and speed of the marking.
  • the invention provides a laser marking machine, a method for adjusting the distance between the scanning head and the marking object of the laser marking machine and an automatic focusing method of the marking machine.
  • the laser marking machine is manually adjusted and reduced. Marking accuracy and speed issues.
  • the adopted scheme is:
  • a laser marking machine comprising a marking machine for placing a marking object, a frame on the marking machine table, a pallet arranged on the frame and movable up and down the rack, and supporting
  • the laser marking component is arranged on the stage.
  • the laser marking component comprises a laser, an optical path component and a scanning head which are sequentially mounted.
  • the optical path component comprises a plurality of concave lenses and/or convex lenses between the laser and the scanning head for adjusting the beam of the incident laser light.
  • the focal length, the marking laser is emitted from the laser, passes through the optical path component, and is incident on the scanning head.
  • the scanning head includes an X mirror and a Y mirror which are sequentially mounted, the X mirror is mounted on the rotating output shaft of the X motor, and the Y mirror is mounted on the On the rotating output shaft of the Y motor, the direction of the rotation axis of the X motor is perpendicular to the direction of the axis of rotation of the Y motor, and the marking laser is sequentially incident on the X mirror and the Y mirror, and is changed by the X mirror and the Y mirror.
  • the marking laser is injected toward the marking machine in a scanning manner; further comprising a controller and a first driving component disposed on the frame for driving the pallet to move up and down the rack, the first driving
  • the moving component comprises a plurality of driving motors, and the driving motor is directly or indirectly connected to the pallet, the controller controls the driving motor to drive the pallet to move up and down along the rack; and further comprises a distance measuring component disposed on the pallet or the laser marking component,
  • the distance component comprises a laser pointer and a laser sensor; the distance measuring component, the controller and the first driving component are sequentially connected; the laser pointer is used for emitting an indicating laser to the marking surface,
  • the light sensor is configured to receive the feedback laser of the surface of the marking surface by the diffuse reflection indicating laser, the indicating laser does not coincide with the feedback laser; the laser sensor sends the sensing signal to the controller, and the controller is configured to calculate the angle between the indicating laser and the feedback laser according to the sensing signal.
  • the controller sends a control signal to the first driving component, and the driving motor of the first driving component drives the laser marking component to move according to the control signal, so that the scanning head of the laser marking component The distance from the surface of the marking object matches the marking focal length of the laser marking machine.
  • the laser marking machine comprises a marking machine for placing the marking object on the base and the base, and the marking machine can be moved up and down, the frame above the marking machine table, and the setting on the frame a laser marking component is disposed on the pallet, the laser marking component comprises a laser, an optical path component and a scanning head which are sequentially mounted, and the optical path component comprises a plurality of concave lenses and/or convex lenses between the laser and the scanning head for adjusting incident The focal length of the laser beam, the marking laser is emitted from the laser, passes through the optical path component, and is incident on the scanning head.
  • the scanning head includes an X mirror and a Y mirror which are sequentially mounted, and the X mirror is mounted on the rotating output shaft of the X motor, and the Y reflection The mirror is mounted on the rotating output shaft of the Y motor.
  • the direction of the rotation axis of the X motor is perpendicular to the direction of the axis of rotation of the Y motor, and the marking laser is sequentially incident on the X mirror and the Y mirror, passing through the X mirror and Y.
  • the marking laser is scanned toward the marking machine; and the controller and the second driving component for driving the marking machine to move up and down, the second driving
  • the component comprises a plurality of driving motors, and the driving motor is directly or indirectly connected to the marking machine table, wherein the controller controls the driving motor to drive the marking machine to move up and down; and further comprises a distance measuring component disposed on the pallet or the laser marking component, and measuring
  • the distance component comprises a laser pointer and a laser sensor; the distance measuring component, the controller and the second driving component are sequentially connected; the laser pointer is used for emitting an indicating laser to the surface of the marking object, and the laser sensor is used for receiving the diffuse reflection indication of the surface of the marked object
  • the feedback laser of the laser indicates that the laser does not coincide with the feedback laser; the laser sensor sends an induction signal to the controller, and the controller is configured to calculate an angle between the indication laser and the feedback laser according to the sensing signal and further calculate the distance from the surface of the marking object to the scanning head.
  • the controller sends a control signal to the second driving component, and the driving motor of the second driving component drives the laser marking component to move according to the control signal, so that the distance between the scanning head of the laser marking component and the surface of the marking object matches the laser marking machine. Mark the focal length.
  • the upper surface of the base is provided with a vertically extending sliding cavity, and the marking machine is disposed in the sliding cavity, and the second driving component connected to the marking platform is disposed in the sliding cavity.
  • the laser pointer is used to emit an indication laser to a feature point preset on the surface of the marking object
  • the laser sensor is configured to receive the feedback laser reflected by the characteristic point and send the sensing signal to the controller
  • the controller is configured to receive the sensing signal according to the sensing
  • the signal calculates a vertical distance of the feature point to the scan head and sends a control signal to the first driving component or the second driving component
  • the first driving component drives the laser marking component according to the control signal or the second driving component drives the marking machine according to the control information
  • the starting point of the table moving to the surface of the marking object is located below the marking focal length of the scanning head of the laser marking component.
  • the laser pointer is used to receive the laser on the surface of the marking object after the marking start point of the marking object is located below the marking focal length of the scanning head of the laser marking component, and the laser sensor is used to receive the warp.
  • a feedback laser that diffuses the surface of the target and sends a sensing signal to the controller, and the controller is configured to calculate a vertical distance from the surface of the marking object to the scanning head according to the sensing signal and send a fine adjustment signal to the first driving component or the second driving component, first The drive component or the second drive component is used to drive according to the trimming signal Fine tune the calibration.
  • Scheme 3 a method of adjusting the distance between the scanning head and the marking object, the laser pointer emits laser light to the surface of the marking object; the laser sensor receives the feedback laser diffused and reflected by the surface of the marking object and sends an induction signal to the controller; Calculating a vertical distance from the surface of the marking object to the scanning head according to the sensing signal and transmitting a control signal to the first driving component or the second driving component; the first driving component drives the laser marking component according to the control signal or the second driving component is driven according to the control information
  • the marking machine moves to the surface of the marking object and the marking starting point is below the marking focal length of the scanning head of the laser marking component.
  • the laser pointer emits laser light to a feature point preset on the surface of the marking object; the laser sensor receives the laser light reflected by the characteristic point and sends an induction signal to the controller.
  • the laser pointer emits an indication laser to the surface of the marking object; the laser sensor receives the laser light reflected by the surface of the marking object and sends an induction signal to the controller; the controller calculates the surface of the marking object to the scanning head according to the sensing signal.
  • the vertical distance sends a trimming signal to the first driving component or the second driving component; the first driving component or the second driving component performs driving fine tuning calibration according to the trimming signal.
  • the optical path assembly includes at least one fixed convex lens and at least one movable concave lens; and further includes a guide rail extending along a direction of the marking laser light, a bracket disposed on the guide rail, and a concave lens fixed On the bracket, the swing motor is directly or indirectly connected to the bracket, and the swing motor control bracket slides back and forth along the guide rail direction, and the swing motor is connected with the controller; the laser pointer is matched with the distance between the scan head and the reference point of the surface feature of the marking object. After marking the focal length of the machine, the laser pointer again emits an indication laser to the surface of the marking object.
  • the laser sensor receives the feedback laser diffusely reflected on the surface of the marking object and sends a sensing signal to the controller, and the controller calculates the marking again according to the sensing signal.
  • the surface feature points the vertical distance from the reference point to the scan head and sends a control signal to the swing motor.
  • the drive bracket and its concave lens slide on the guide rail to change the marking focal length of the marking machine until the marking focal length is equal to the marking surface to the scanning head. The vertical distance.
  • the method further includes: a control terminal connected to the controller, wherein the control terminal stores a digital model of the marking object, and when the marking laser is shot at a point other than the feature reference point on the surface of the marking object, the control terminal is The digital model of the target and the vertical distance from the feature reference point to the scan head calculate the real-time distance between the point of the target surface except the feature reference point and the scan head, and send a signal to the controller, and the controller controls the swing motor adjustment bracket and The sliding position of the concave lens on the guide rail again causes the marking focal length to be equal to the real-time distance of the point of the marking object other than the feature reference point from the scanning head.
  • a control terminal connected to the controller, wherein the control terminal stores a digital model of the marking object, and when the marking laser is shot at a point other than the feature reference point on the surface of the marking object, the control terminal is The digital model of the target and the vertical distance from the feature reference point to the scan head calculate the real-time distance between the point of the target surface except the
  • the invention has the beneficial effects that: since the invention emits laser light to the surface of the marking object through the laser pointer, the laser sensor is configured to receive the laser light reflected by the surface of the marking object and send the sensing signal to the controller, and the controller calculates the signal according to the first signal. Marking the vertical distance of the surface of the object to the distance measuring component and sending a control signal to the driving component, the first driving component driving the laser marking component according to the control signal to move the marking object to the marking focal length of the laser marking component, or the second The driving component drives the marking platform according to the control signal to move the marking object to the marking focal length of the laser marking component. Therefore, the application can automatically adjust the distance between the scanning head and the marking object to the marking focal length, thereby ensuring the accuracy of the marking and improving the marking speed.
  • Figure 1 is a schematic view showing the structure of a laser marking machine of the present invention
  • Figure 2 is a side view of the laser marking machine of the present invention
  • FIG. 3 is a schematic view showing the working principle of the laser marking machine of the present invention
  • FIG. 4 is a schematic structural view of an optical path assembly of a laser marking machine according to the present invention.
  • Figure 5 is an enlarged view of the portion A in Figure 4.
  • FIG. 6 is a schematic diagram of the autofocus principle of the laser marking machine of the present invention
  • a laser marking machine as shown in FIG. 1 and FIG. 2, comprises a base 1 on which a frame 2 is arranged, and a vertical extending rail is arranged on the frame 2, and a pallet 3 is arranged on the rail.
  • the pallet 3 is slidable along the guide rails.
  • a laser marking assembly 4 is provided on the pallet 3, and the laser marking assembly 4 is used to generate a marking laser, and the marking laser is emitted from the scanning head 41.
  • the scanning head includes an X mirror and a Y mirror which are sequentially mounted, the X mirror is mounted on the rotating output shaft of the X motor, and the Y mirror is mounted on the rotating output shaft of the Y motor, and the rotation axis direction of the X motor is opposite to the Y motor The direction of the rotation axis is perpendicular to each other, and the marking laser is sequentially incident on the X mirror and the Y mirror. After the X mirror and the Y mirror change direction, the marking laser is scanned toward the marking machine.
  • the laser marking machine pallet 3 is coupled to the first drive assembly, and the first drive assembly 6 is coupled to the controller.
  • the first driving component 6 includes a driver and a screw mechanism, and the control button 81 is manually operated to cause the controller to issue a command to drive the pallet 3 to move up and down along the rail on the frame 2 through the cooperation of the driver and the screw mechanism, thereby adjusting the scanning head.
  • a distance measuring unit 5 is disposed on one side of the scanning head 41, and a laser pointer and a laser sensor are integrated in the distance measuring unit 5.
  • the laser sensor, the controller and the first drive assembly 6 are electrically connected in sequence.
  • the laser pointer can be selected with a red laser pointer, and the red laser has high recognizability and is convenient for sensing by the laser sensor.
  • the first driving component comprises a plurality of driving motors, and the driving motor is directly or indirectly connected to the pallet, the controller controls the driving motor to drive the pallet to move up and down the rack; and further comprises a distance measuring component disposed on the pallet or the laser marking component
  • the distance measuring component comprises a laser pointer and a laser sensor; the distance measuring component, the controller and the first driving component are sequentially connected; the laser pointer is used for emitting an indicating laser to the surface of the marking object, and the laser sensor is used for receiving the surface of the marking object
  • the reflection indicates laser feedback laser, indicating that the laser does not coincide with the feedback laser; the laser sensor sends an induction signal to the controller, and the controller is configured to calculate an angle between the indication laser and the feedback laser according to the sensing signal and further calculate the surface of the marking object to the scanning head
  • the controller sends a control signal to the first driving component, and the driving motor of the first driving component drives the laser marking component to move according to the control signal, so that the scanning head of the laser marking component and the
  • the laser pointer is configured to emit an indication laser to the feature points preset on the surface of the marking object
  • the laser sensor is configured to receive the feedback laser reflected by the characteristic point and send the sensing signal to the controller
  • the controller is configured to calculate the feature point to the scanning head according to the sensing signal
  • the vertical direction distance sends a control signal to the first driving component, and the first driving component drives the laser marking component to move to the marking surface according to the control signal.
  • the marking starting point is below the marking focal length of the scanning head of the laser marking component.
  • the laser pointer emits an indication laser to the surface of the marking object after the marking starting point is located below the marking focal length of the scanning head of the laser marking component, and the laser sensor is used for receiving the diffuse reflection of the surface of the marking object.
  • the laser is fed back and sends a sensing signal to the controller.
  • the controller is configured to calculate a vertical distance from the surface of the marking object to the scanning head according to the sensing signal and send a fine adjustment signal to the first driving component, and the first driving component performs driving fine adjustment calibration according to the fine adjustment signal.
  • the laser marking assembly includes a laser 42, an optical path assembly 43 and a scanning head 41 which are sequentially mounted.
  • the optical path assembly includes a concave lens 433 and a convex lens 434 between the laser and the scanning head for The focal length of the incident laser beam is adjusted, and the marking laser is emitted from the laser and passed through the optical path component to be incident on the scanning head.
  • the scanning head includes a plurality of reflecting lenses for changing the direction of the marking laser to cause the marking laser to be emitted toward the marking machine.
  • the laser pointer when the marking object 10 is specifically marked, after the laser marking machine starts working, the laser pointer emits laser light to the surface of the marking object 10, and the laser generates diffuse reflection on the surface of the marking object 10, and the laser
  • the sensor is configured to receive the laser light reflected by the surface of the marked object 10, thereby generating an induction and transmitting an induction signal to the controller, and the controller is configured to calculate a vertical distance of the surface of the marking object 10 to the ranging component according to the sensing signal.
  • the principle of calculating the distance by the controller is that according to the linear propagation and emission angle of the laser, after the controller calculates the vertical distance from the surface of the marking object 10 to the ranging component, the controller sends a control signal to the first driving component 6, and the first driving component 6 For driving the pallet 3 according to the control signal, the laser marking assembly 4 is moved until the marking object 10 is located on the marking focal length of the laser marking assembly 4. Thereafter, the laser marking machine marks the marking object 10 according to the position of the marking pattern on the virtual model.
  • the first driving component 6 includes a driver and a screw mechanism.
  • the first driving component that can drive the laser marking component 3 to move up and down along the rail on the frame 2 by a control signal is It falls within the scope of protection of this embodiment.
  • the present embodiment measures the vertical distance from the surface of the marking object 10 to the distance measuring assembly 5.
  • the laser marking machine comprises a marking machine for placing a marking object on the base and the base, the marking machine can be moved up and down, a frame above the marking machine, a pallet set on the frame, and a tray
  • the laser marking component is arranged on the stage.
  • the laser marking component comprises a laser, an optical path component and a scanning head which are sequentially mounted.
  • the optical path component comprises a plurality of concave lenses and/or convex lenses between the laser and the scanning head for adjusting the beam of the incident laser light.
  • the focal length, the marking laser is emitted from the laser, passes through the optical path component, and is incident on the scanning head.
  • the scanning head includes a plurality of reflecting lenses for changing the direction of the marking laser to cause the marking laser to be emitted toward the marking machine; and the controller and the a second driving component for driving the marking machine to move up and down, the second driving component comprises a plurality of driving motors, the driving motor is directly or indirectly connected to the marking machine table, and the controller controls the driving motor to drive the marking machine to move up and down; Also includes setting on the pallet or laser marking group
  • the distance measuring component on the piece, the distance measuring component comprises a laser pointer and a laser sensor; the distance measuring component, the controller and the second driving component are sequentially connected; the laser pointer is used for emitting the indicating laser to the surface of the marking object, and the laser sensor is used for receiving The diffuse reflection on the surface of the marking indicates the feedback laser of the laser, indicating that the laser does not coincide with the feedback laser; the laser sensor sends an inductive signal to the controller, and the controller is configured to calculate the angle between the indicating laser and the feedback laser according to the sensing signal and calculate the hit
  • the controller sends a control signal to the second driving component, and the driving motor of the second driving component drives the laser marking component to move according to the control signal, so that the scanning head of the laser marking component and the surface of the marking object The distance matches the marking focal length of the laser marking machine.
  • the upper surface of the base is provided with a vertically extending sliding cavity, and the marking machine is disposed in the sliding cavity, and the second driving component connected to the marking platform is disposed in the sliding cavity.
  • the laser pointer is configured to emit an indication laser to the feature points preset on the surface of the marking object
  • the laser sensor is configured to receive the feedback laser reflected by the characteristic point and send the sensing signal to the controller
  • the controller is configured to calculate the feature point to the scanning head according to the sensing signal
  • the vertical direction distance sends a control signal to the second driving component, and the second driving component drives the marking machine to move to the marking surface according to the control information.
  • the marking starting point is below the marking focal length of the scanning head of the laser marking component.
  • the laser pointer emits an indication laser on the surface of the marking object after the marking starting point is located below the marking focal length of the scanning head of the laser marking component, and the laser sensor is used to receive the feedback of the diffuse reflection on the surface of the marking object.
  • the laser sends an induction signal to the controller, and the controller is configured to calculate a vertical distance from the surface of the marking object to the scanning head according to the sensing signal and send a fine adjustment signal to the second driving component, and the second driving component is configured to perform driving fine adjustment calibration according to the fine adjustment signal.
  • This embodiment is improved on the basis of Embodiment 1 or 2.
  • This embodiment illustrates a scheme of a laser marking machine for a stereo marker.
  • the laser marking machine can also be connected to the external control terminal.
  • a virtual model of the marking object 10 is built in the control terminal, and the marking pattern is attached to the surface of the virtual model.
  • a feature point needs to be preset on the surface of the marking object 10, and the feature point may be any point that is easily recognized on the surface of the marking object 10, and the highest point or the lowest point of the surface of the marking object 10 may be selected.
  • the position of the point corresponding to the feature point in the virtual model is stored.
  • the feature point 101 is preset as the highest point on the surface of the marking object 10, and the marking object 10 is placed on the marking platform 11, and the marking object 10 is moved to the laser light emitted by the laser pointer to the feature point.
  • the laser pointer is used to emit laser light to the feature point 101
  • the laser sensor is used to receive the laser light reflected at the feature point 101
  • the controller 8 calculates the vertical distance of the feature point 101 to the ranging component 5, and then marks any point on the object 10 to
  • the vertical distance of the ranging assembly 5 shows that the laser marking machine can start marking from any point on the marking object 10, thus setting a marking initial point 102 and transmitting a control signal to the driving assembly.
  • Drive The assembly is adapted to drive movement according to the control signal until the marking initial point 102 is at the marking focal length of the laser marking assembly 4. Thereafter, the internal program of the control terminal controls the laser marking machine to start marking from the marking initial point 102.
  • Embodiment 1 when the first driving component 6 drives the laser marking component 4 to move to the marking focal length of the laser marking component 4, the position of the laser marking component 4 and the actual focal length position will be A larger error, especially when the first driving component 6 drives the laser marking component 4 to move a large distance, the error is greater. Therefore, the embodiment provides a fine tuning calibration scheme.
  • the laser pointer After the laser pointer is driven by the first driving component 6 to move the laser marking component 4 to the marking focal length of the laser marking component 4, the laser pointer again emits laser light to the surface of the marking object, and the laser sensor receives the marking again.
  • the laser reflected from the surface of the object sends an induction signal to the controller, and the controller again calculates the vertical distance from the surface of the marking object to the ranging component and sends a fine adjustment signal to the first driving component, and the first driving component is used to drive the laser according to the fine tuning signal.
  • the component is fine-tuned to improve the accuracy of the position adjustment.
  • This embodiment is an improvement on the basis of Embodiments 1 and 2, and the specific improvement is as follows.
  • a laser marking machine as shown in FIGS. 3 and 4, includes a frame and a laser assembly 4 disposed on the frame, the laser marking assembly 4 includes a laser 42 for generating laser light, and is sequentially disposed in the laser 42 A focusing assembly 43 and a scanning head 41 on the optical path of the laser are generated. Also included is a concentrating mirror controller 7 and a concentrating mirror driving assembly 61, and the concentrating mirror controller 7, the concentrating mirror driving assembly 61, and the optical path assembly 43 are sequentially connected.
  • the scanning head 41 includes an X mirror for adjusting the optical path to be deflected in the lateral direction and a Y mirror for adjusting the optical path to be deflected in the longitudinal direction.
  • the marking laser is emitted from the laser 42 and is focused by the optical path assembly 43 and adjusted by the scanning head 41 to be irradiated onto the marking object 10.
  • the optical path assembly 43 includes a support base 431, a bracket 432, a concave lens 433, and a convex lens 434 (in other embodiments, the positions of the two are interchangeable and should be considered equivalent to the present embodiment).
  • the support base 431 is provided with a guide rail 435 extending along the laser optical path.
  • the bracket 432 is disposed on the guide rail 435 and slidable along the guide rail 435.
  • the focus lens 433 is fixed on the bracket 432, and further includes a swing motor directly or indirectly connected to the bracket.
  • the motor control bracket slides back and forth along the guide rail direction, and the swing motor is connected to the controller; therefore, when the bracket 432 slides on the guide rail 435, the focus lens 433 is also moved, and the position of the focus lens 433 at the position of the guide rail 435 corresponds to the focal length of the marking laser, and the focus is passed.
  • the movement of the lens 433 on the guide rail 435 changes the focal length of the marking laser.
  • a distance measuring assembly 5 is further provided on the laser marking assembly 4, and the distance measuring assembly 5 includes a laser pointer and a laser sensor.
  • the laser pointer is used to emit laser light to the surface of the marking object, the laser generates diffuse reflection on the surface of the marking object 10, and the laser sensor is used to receive the laser light reflected by the surface of the marking object 10, thereby generating an induction and transmitting a first sensing signal to the controller.
  • the concentrating mirror controller 7 is configured to calculate the vertical distance of the marking object surface to the ranging component 5 according to the first sensing signal.
  • the concentrating mirror controller 7 calculates the surface of the marking object to the distance measuring After the vertical distance of the component, a control signal is sent to the concentrating mirror driving component 61.
  • the concentrating mirror driving component 61 is configured to drive the gantry 3 to move the laser component 4 according to the control signal until the marking object is located on the marking focal length of the laser component 4.
  • This embodiment is a method for adjusting the distance between the scanning head and the marking object based on the devices of Embodiments 1 and 2.
  • a method for adjusting a distance between a scanning head and a marking object the laser pointer emitting a laser to the surface of the marking object; the laser sensor receiving the feedback laser diffused and reflected by the surface of the marking object and transmitting the sensing signal to the controller;
  • the sensing signal calculates a vertical distance from the surface of the marking object to the scanning head and sends a control signal to the first driving component or the second driving component; the first driving component drives the laser marking component according to the control signal or the second driving component drives the driving according to the control information
  • the marking machine moves to the surface of the marking object and the marking starting point is below the marking focal length of the scanning head of the laser marking component.
  • the laser pointer emits laser light to a feature point preset on the surface of the marking object; the laser sensor receives the laser light reflected by the feature point and sends an induction signal to the controller.
  • the laser pointer again emits an indication laser to the surface of the marking object; the laser sensor receives the laser light reflected by the surface of the marking object and sends an induction signal to the controller; the controller calculates the vertical distance from the surface of the marking object to the scanning head according to the sensing signal and The first driving component or the second driving component sends a trimming signal; the first driving component or the second driving component performs driving fine tuning calibration according to the trimming signal.
  • This embodiment is a marking machine autofocus method adopted on the basis of the devices of Embodiments 1 and 2.
  • a marking machine autofocus method comprising at least one fixed convex lens and at least one movable concave lens; further comprising a guide rail extending along a direction of the marking laser light, a bracket disposed on the guide rail, the concave lens being fixed at The bracket further includes a swing motor directly or indirectly connected to the bracket, the swing motor control bracket slides back and forth along the guide rail direction, and the swing motor is connected with the controller; the distance between the scan head and the surface feature reference point of the marking object matches the laser marking machine After the marking focal length, the laser pointer again emits an indicating laser to the surface of the marking object, the laser sensor receives the feedback laser diffused and reflected by the surface of the marking object and sends an induction signal to the controller, and the controller calculates the marking object again according to the sensing signal.
  • the surface feature points the vertical distance from the scanning head to the scanning motor and sends a control signal to the swinging motor.
  • the driving bracket and its concave lens slide on the guide rail to change the marking focal length of the marking machine to the marking focal length equal to the surface of the marking object to the scanning head. vertical distance.
  • the utility model further comprises a control terminal connected to the controller, wherein the control terminal stores a digital model of the marking object, and the control terminal is based on the digital model of the marking object when the marking laser is incident on the surface of the marking object except the feature reference point. And calculating the real-time distance between the point of the target surface and the scanning head except the characteristic reference point, and sending a signal to the controller, and the controller controls the swing motor adjusting bracket and the concave lens thereof on the guide rail.
  • the sliding position is again such that the marking focal length is equal to the real-time distance of the point of the marking surface other than the feature reference point from the scanning head.
  • the overall beneficial effect of the present invention is: since the present invention emits laser light to the surface of the marking object through the laser pointer, the laser sensor is configured to receive the laser light reflected by the surface of the marking object and send an induction signal to the controller, the controller according to the first The signal calculates a vertical distance from the surface of the marking object to the ranging component and sends a control signal to the driving component, and the first driving component drives the laser marking component to move to the marking focal length of the laser marking component according to the control signal, or The second driving component drives the marking platform to move according to the control signal to the marking object located at the marking focal length of the laser marking component. Therefore, the application can automatically adjust the distance between the scanning head and the marking object to the marking focal length, thereby ensuring the accuracy of the marking and improving the marking speed.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Laser Surgery Devices (AREA)

Abstract

L'invention concerne une machine de marquage au laser comprenant une crémaillère (2) et une table de support (3) disposée sur la crémaillère et pouvant se déplacer vers le haut et vers le bas le long de la crémaillère, la table de support étant pourvue d'un ensemble de marquage laser (4), et comprenant en outre un dispositif de commande (8) et un premier ensemble d'entraînement (6) disposé sur la crémaillère et utilisé pour entraîner la table de support à se déplacer vers le haut et vers le bas le long de la crémaillère, et comprenant en outre un ensemble de télémétrie (5) disposé sur l'ensemble de marquage au laser. L'ensemble de télémétrie comprend un pointeur laser et un capteur laser, le pointeur laser étant utilisé pour émettre un laser sur la surface d'un objet pour le marquage (10), le capteur laser est utilisé pour recevoir un laser réfléchi à partir de la surface de l'objet pour marquer et envoyer un signal au dispositif de commande, le dispositif de commande calcule la distance verticale de la surface de l'objet pour le marquage à l'ensemble de télémétrie en fonction du signal, et le premier ensemble d'entraînement, en fonction du signal, entraîne la table de support pour entraîner l'ensemble de marquage laser à se déplacer jusqu'à ce qu'une distance entre une tête de balayage (41) et la surface de l'objet pour le marquage atteigne une distance prédéfinie. L'invention concerne en outre un procédé pour ajuster la distance entre une tête de balayage d'une machine de marquage au laser et un objet pour le marquage, et un procédé pour aligner automatiquement une machine de marquage au laser. La machine de marquage au laser ci-dessus peut assurer un marquage précis et augmenter la vitesse de marquage.
PCT/CN2017/113288 2016-03-26 2017-11-28 Machine de marquage au laser, procédé de réglage de la distance entre la tête de balayage et l'objet pour le marquage, et procédé d'alignement automatique de machine de marquage WO2018176879A1 (fr)

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CN201610182815 2016-03-26
CN201710185470.3A CN107225322A (zh) 2016-03-26 2017-03-26 激光打标机、调节扫描头与打标物距离的方法及打标机自动对焦方法
CN201710185470.3 2017-03-26

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PCT/CN2017/113288 WO2018176879A1 (fr) 2016-03-26 2017-11-28 Machine de marquage au laser, procédé de réglage de la distance entre la tête de balayage et l'objet pour le marquage, et procédé d'alignement automatique de machine de marquage
PCT/CN2018/080565 WO2018177261A1 (fr) 2016-03-26 2018-03-26 Machine de marquage au laser, procédé de réglage de la distance entre la tête de balayage et l'objet à marquer et procédé de mise au point automatique et procédé de marquage à mise au point automatique de machine de marquage

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CN113581859A (zh) * 2021-07-28 2021-11-02 达科为（深圳）医疗设备有限公司 玻片打号机
CN113581859B (zh) * 2021-07-28 2022-11-18 达科为（深圳）医疗设备有限公司 玻片打号机
CN114749804A (zh) * 2022-05-07 2022-07-15 同日云联信息技术(苏州)有限公司 基于工业互联网的手持激光刻印装置及方法
CN114749804B (zh) * 2022-05-07 2024-03-19 同日云联信息技术(苏州)有限公司 基于工业互联网的手持激光刻印装置及方法
CN115890003A (zh) * 2022-10-24 2023-04-04 湖北三江航天红峰控制有限公司 一种双振镜自动激光剥线打标与去漆设备及其使用方法

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CN107755879A (zh) 2018-03-06
CN208019618U (zh) 2018-10-30
CN208358035U (zh) 2019-01-11
WO2018176878A1 (fr) 2018-10-04
CN107225322A (zh) 2017-10-03
WO2018177261A1 (fr) 2018-10-04
CN107755879B (zh) 2018-12-07
CN206747778U (zh) 2017-12-15

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