A laser marking machine and laser marking system with three-dimensional focusing and counting functions

Abstract

The utility model relates to a kind of laser marking machine and laser marking system with three-dimensional focusing coding function, wherein, the laser marking machine includes cabinet, laser module, lifting adjustment module, focal length adjustment module and control device;The cabinet is provided with the avoidance mouth at the corresponding position with the emission port of the laser module;Detection device for detecting the marking point in the flexible packaging bag conveyed by conveying device is further provided on the laser marking machine;The detection device is located at the upstream station of the laser marking machine, for detecting the position information of the marking point of flexible packaging bag;The control device controls the lifting adjustment module and the focal length adjustment module according to the position information of received marking point, and realizes automatic adjustment to focal length. The focal length of the laser marking machine of the utility model can be adjusted, so that it can be suitable for laser marking to flexible packaging bag.

Description

Technical Field

[0001] This utility model relates to the field of laser marking, specifically to a laser marking machine and laser marking system with three-dimensional focusing and marking functions. Background Technology

[0002] Laser marking uses a laser beam to create permanent marks on the surface of various materials. The laser beam can evaporate the surface material to expose the deeper material, cause chemical or physical changes in the surface material to leave a mark, or burn away part of the material to reveal the desired etched graphics or text.

[0003] In the marking process of flexible packaging bags, the marking point position is prone to shift during the transportation of the bags, which are made of flexible materials. Traditional laser marking machines have a fixed focal length, which is difficult to adapt to changes in the position of the packaging bag, thus adversely affecting the marking quality and causing problems such as blurry markings, ghosting, or positional deviations.

[0004] Specifically, during the transport of flexible packaging bags, the marking position on their surface will dynamically shift due to factors such as material extensibility, fluctuations in transport tension, and mechanical vibration. Traditional laser marking machines cannot adjust their focal length in real time to match this positional change, resulting in an unstable relative distance between the laser focus point and the packaging bag surface. When the focus point deviates from the optimal position, the concentration of laser energy decreases, ultimately leading to poor marking results. In severe cases, this can cause product scrapping, affecting production efficiency and product quality. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a laser marking machine with three-dimensional focusing and coding function. The focal length of the laser marking machine is adjustable, so it can be used for laser marking of flexible packaging bags.

[0006] The second objective of this invention is to provide a laser marking system that utilizes the aforementioned laser marking machine.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is:

[0008] A laser marking machine with three-dimensional focusing and coding function includes a chassis, a laser module disposed in the chassis, a lifting adjustment module for driving the laser module to rise and fall, a focus adjustment module for driving the laser module to move toward or away from a flexible packaging bag, and a control device, wherein the chassis is provided with a clearance opening at a position corresponding to the emission port of the laser module.

[0009] The laser marking machine is also equipped with a detection device for detecting the marking points in the flexible packaging bags conveyed by the conveying device. The detection device is located at the upstream station of the laser marking machine and is used to detect the position information of the marking points on the flexible packaging bags. The control device controls the lifting adjustment module and the focus adjustment module to work together and automatically adjust the focus based on the received position information of the marking points.

[0010] Preferably, the lifting adjustment module includes a base, a lifting seat disposed on the base, and a lifting drive mechanism for driving the lifting seat to rise and fall. The lifting seat is mounted on the base via a lifting guide mechanism, which consists of multiple sets. Each set of lifting guide mechanisms includes a guide sleeve disposed on the base and a guide rod disposed on the lifting seat. The upper end of the guide rod is connected to the lifting seat, and the lower end passes downward through the guide sleeve and connects to a limiting block. The outer diameter of the limiting block is larger than the aperture of the guide sleeve.

[0011] Preferably, the lifting drive mechanism includes a lead screw, a lead screw nut disposed on the lead screw, and a first handwheel for driving the lead screw to rotate. The upper end of the lead screw is rotatably connected to the lifting seat, and the lower end extends vertically downward and passes through the lead screw nut. The first handwheel is rotatably connected to the base and is connected to a rotating shaft. The end of the rotating shaft is connected to the outer side of the lead screw nut through a worm gear mechanism.

[0012] Preferably, the worm gear mechanism includes a worm disposed at the end of the rotating shaft and a worm wheel disposed outside the lead screw nut, wherein the worm is coaxial with the rotating shaft; and the worm wheel is coaxial with the lead screw nut.

[0013] Preferably, the focus adjustment module consists of two sets: a manual focus adjustment module and an automatic focus adjustment module. The manual focus adjustment module is mounted on the lifting base and is used to drive the automatic focus adjustment module to move. The automatic focus adjustment module is used to drive the laser module to move.

[0014] Preferably, the focus adjustment module is a slide rail module, wherein the slide rail module in the manual focus adjustment module is driven by a second handwheel and a lead screw transmission mechanism; and the slide rail module in the automatic focus adjustment module is driven by a motor and a lead screw transmission mechanism.

[0015] Preferably, the laser module is provided with an angle adjustment module for adjusting the left and right tilt angle and the pitch angle of the laser head.

[0016] Preferably, the upper side of the chassis is provided with an operating table, and the rear side is provided with a heat dissipation vent. A heat dissipation module is provided inside the chassis at a position corresponding to the heat dissipation vent.

[0017] Preferably, the detection device is a camera or an industrial camera.

[0018] A laser marking system includes the laser marking machine and a conveying device for conveying flexible packaging bags.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] 1. The laser marking machine with three-dimensional focusing and coding function of this utility model can realize the lifting and lowering and left and right adjustment of the laser module, while the front and back adjustment is achieved by the conveying device driving the flexible packaging bag to move, thereby realizing the adjustment of the focal length of the laser module, so as to ensure that the focal point of the laser module is located at the optimal position (i.e. the marking point of the flexible packaging bag), so as to maximize the concentration of laser energy, thereby ensuring the marking effect, and thus ensuring the production efficiency and product quality.

[0021] 2. The laser marking machine with three-dimensional focusing and coding function of this utility model detects the position information of the marking point on the flexible packaging bag in advance through the detection device, and then uploads the position information of the marking point to the control device. The control device controls the laser marking machine to automatically adjust the focus according to the received position information of the marking point, so as to ensure the marking effect. Attached Figure Description

[0022] Figure 1 This is a perspective view of the laser marking machine with three-dimensional focusing and marking function according to this utility model.

[0023] Figures 2-4 These are three-dimensional views of the laser module, the height adjustment module, and the focus adjustment module from three different perspectives.

[0024] Figure 5 This is a schematic diagram of the lifting drive mechanism.

[0025] Figure 6 This is a schematic diagram of the laser marking system of this utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0027] Example 1

[0028] See Figures 1-5The laser marking machine with three-dimensional focusing and coding function of this utility model includes a housing 10, a laser module 1 disposed in the housing 10, a lifting adjustment module for driving the laser module 1 to rise and fall, and a focus adjustment module for driving the laser module 1 to move towards or away from the flexible packaging bag.

[0029] The lifting adjustment module includes a base 7, a lifting seat 5 disposed on the base 7, and a lifting drive mechanism for driving the lifting seat 5 to rise and fall.

[0030] The lifting seat 5 is mounted on the base 7 via a lifting guide mechanism 4. There are four sets of lifting guide mechanisms 4, which guide the lifting movement of the lifting seat 5. The four sets of lifting guide mechanisms 4 are located at the four opposite corners of the base 7 / lifting seat 5. Each set of lifting guide mechanisms 4 includes a guide sleeve mounted on the base 7 and a guide rod mounted on the lifting seat 5. The upper end of the guide rod is connected to the lifting seat 5, and the lower end passes downwards through the guide sleeve and connects to a limiting block 14. The outer diameter of the limiting block 14 is larger than the aperture of the guide sleeve, preventing the guide rod from dislodging from the guide sleeve.

[0031] The lifting drive mechanism includes a lead screw 12, a lead screw nut mounted on the lead screw 12, and a first handwheel 8 for driving the lead screw 12 to rotate. The upper end of the lead screw 12 is rotatably connected to the lifting seat 5, and the lower end extends vertically downwards and passes through the lead screw nut. The first handwheel 8 is rotatably connected to the base 7 and is connected to a rotating shaft. The end of the rotating shaft is connected to the outer side of the lead screw nut via a worm gear mechanism 13. The worm gear mechanism 13 includes a worm at the end of the rotating shaft and a worm wheel on the outside of the lead screw nut. The worm is coaxial with the rotating shaft. By rotating the first handwheel 8, the worm gear mechanism 13 is moved, thereby rotating the lead screw nut and driving the lead screw 12 and the lifting seat 5 connected to the lead screw 12 to rise and fall. In addition to the above implementation, a motor can also be used to drive the worm gear mechanism 13, which can also drive the lead screw nut to rotate and the lead screw and the lifting seat 5 to rise and fall.

[0032] The focus adjustment module consists of two sets: a manual focus adjustment module 3 and an automatic focus adjustment module 2. The manual focus adjustment module 3 is mounted on the lifting seat 5 and is used to drive the automatic focus adjustment module 2. The automatic focus adjustment module 2 is used to drive the laser module 1. In this embodiment, the focus adjustment module is a slide rail module. The slide rail module in the manual focus adjustment module 3 is driven by a second handwheel 6 and a lead screw transmission mechanism. The slide rail module in the automatic focus adjustment module 2 is driven by a motor 9 and a lead screw transmission mechanism. By combining the manual focus adjustment module 3 and the automatic focus adjustment module 2, the position of the laser module 1 can be pre-adjusted according to the specifications of the flexible packaging bag by the manual focus adjustment module 3, thereby reducing the adjustment stroke of the automatic focus adjustment module 2 and improving the response speed of the automatic focus adjustment module 2.

[0033] The chassis 10 is provided with a clearance opening 11 at a position corresponding to the emission port of the laser module 1;

[0034] In this embodiment, the laser module 1 is implemented using an existing device. The laser module 1 is provided with an angle adjustment module for adjusting the left and right tilt angle and the pitch angle of the laser head. The angle adjustment module can be adjusted by a motor, that is, a corresponding motor is set for adjustment.

[0035] See Figures 1-5 The chassis 10 has an operating table on its upper side and a heat dissipation vent on its rear side. A heat dissipation module is provided on the inner side of the chassis 10 at a position corresponding to the heat dissipation vent.

[0036] Example 2

[0037] See Figure 6 The laser marking system of this utility model includes the laser marking machine described in Embodiment 1 and a conveying device 15 for conveying flexible packaging bags, wherein...

[0038] The laser marking machine is also equipped with a detection device and a control device for detecting the marking points on the flexible packaging bags 16 conveyed by the conveying device 15. The detection device is located at the upstream station of the laser marking machine and is used to detect the position information of the marking points on the flexible packaging bags 16. The detection device is a camera or industrial camera, which identifies the position information of the marking points on the flexible packaging bags 16 on the conveying device 15 through image recognition. The control device controls the laser marking machine to automatically adjust the focal length of the laser module 1 according to the position information of the marking points, so as to realize laser marking on the marking points of the flexible packaging bags 16 on the conveying device 15.

[0039] In this embodiment, the conveying device 15 adopts a conveyor belt conveying method.

[0040] See Figures 1-5 The working principle of the laser marking system of this utility model is as follows:

[0041] During operation, the conveying device 15 drives the flexible packaging bag 16 to move. When the flexible packaging bag 16 moves to the detection station, the detection device detects the flexible packaging bag 16 to determine the position information of the marking point. Then, the position information is sent to the control device. The control device controls the lifting adjustment module, the focal length adjustment module, and the angle adjustment module to work together to adjust the focal length of the laser module 1 so that the focal point of the laser module 1 is located at the optimal position (i.e., the marking point of the flexible packaging bag 16), thereby maximizing the concentration of laser energy, ensuring the marking effect, and guaranteeing the production efficiency and product quality.

[0042] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A laser marking machine with three-dimensional focusing and counting functions, comprising a machine box, a laser module arranged in the machine box, a lifting adjustment module for driving the laser module to lift, a focal length adjustment module for driving the laser module to move towards or away from a flexible packaging bag, and a control device, wherein, The chassis has a clearance opening at the position corresponding to the emission port of the laser module; The laser marking machine is characterized by the following: a detection device is provided on the laser marking machine for detecting the marking points in the flexible packaging bag conveyed by the conveying device. The detection device is located at the upstream station of the laser marking machine and is used to detect the position information of the marking points on the flexible packaging bag. The control device controls the lifting adjustment module and the focus adjustment module to work together and automatically adjust the focus based on the received position information of the marking points.

2. The laser marking machine with three-dimensional focusing and counting functions according to claim 1, characterized in that, The lifting adjustment module includes a base, a lifting seat mounted on the base, and a lifting drive mechanism for driving the lifting seat to rise and fall. The lifting seat is mounted on the base via a lifting guide mechanism, which consists of multiple sets. Each set of lifting guide mechanisms includes a guide sleeve mounted on the base and a guide rod mounted on the lifting seat. The upper end of the guide rod is connected to the lifting seat, and the lower end passes downward through the guide sleeve and connects to a limiting block. The outer diameter of the limiting block is larger than the aperture of the guide sleeve.

3. The laser marking machine with three-dimensional focusing and counting functions according to claim 2, characterized in that, The lifting drive mechanism includes a lead screw, a lead screw nut mounted on the lead screw, and a first handwheel for driving the lead screw to rotate. The upper end of the lead screw is rotatably connected to the lifting base, and the lower end extends vertically downward and passes through the lead screw nut. The first handwheel is rotatably connected to the base and is connected to a rotating shaft. The end of the rotating shaft is connected to the outer side of the lead screw nut via a worm gear mechanism.

4. The laser marking machine with three-dimensional focusing and counting functions according to claim 3, characterized in that, The worm gear mechanism includes a worm located at the end of the rotating shaft and a worm wheel located outside the lead screw nut, wherein the worm is coaxial with the rotating shaft and the worm wheel is coaxial with the lead screw nut.

5. The laser marking machine with three-dimensional focusing and counting functions according to claim 4, characterized in that, The focus adjustment module consists of two sets: a manual focus adjustment module and an automatic focus adjustment module. The manual focus adjustment module is mounted on the lifting base and is used to drive the automatic focus adjustment module to move. The automatic focus adjustment module is used to drive the laser module to move.

6. The laser marking machine with three-dimensional focusing and counting functions according to claim 5, characterized in that, The focus adjustment module is a slide rail module. In the manual focus adjustment module, the slide rail module is driven by a second handwheel and a lead screw transmission mechanism; in the automatic focus adjustment module, the slide rail module is driven by a motor and a lead screw transmission mechanism.

7. The laser marking machine with three-dimensional focusing and counting functions according to claim 6, characterized in that, The laser module is equipped with an angle adjustment module for adjusting the left and right tilt angles and the pitch angle of the laser head.

8. The laser marking machine with three-dimensional focusing and counting functions according to claim 1, characterized in that, The chassis has an operating table on the upper side and a heat dissipation vent on the rear side. A heat dissipation module is installed inside the chassis at a position corresponding to the heat dissipation vent.

9. The laser marking machine with three-dimensional focusing and counting functions according to claim 1, characterized in that, The detection device is a camera or an industrial camera.

10. A laser marking system using the laser marker with three-dimensional focusing and counting functions according to any one of claims 1 to 9, characterized in that, Includes the laser marking machine and a conveying device for conveying flexible packaging bags.

Images