Multi-station laser screen making machine and machining method

Abstract

The invention discloses a multi-station laser screen making machine and a machining method, and relates to the printing screen making technology, the multi-station laser screen making machine is characterized by comprising a rack, a rack magnetic assembly is provided with a screen cylinder and a driving mechanism used for driving the screen cylinder to rotate, and the rack is provided with a plurality of punching stations; each punching station is provided with a laser punching device and a displacement mechanism connected with the laser punching device, the displacement mechanisms are used for driving the laser punching devices to move horizontally in the length direction of the punching stations, and the front ends of the laser punching devices are provided with bearing mechanisms used for bearing the net barrels. A high-definition camera located at the same horizontal height as the laser drilling device is arranged on the bearing mechanism and used for scanning and recognizing the mesh cylinder meridian and pattern conditions before and after laser drilling. The mesh manufacturing process is simple in step and high in efficiency, the mesh and the pattern are automatically divided into a plurality of areas, the working mode that the multiple stations are arranged and the multiple laser drilling devices are used for conducting laser drilling synchronously is adopted, and the power consumption of laser is effectively reduced.

Description

Technical Field

[0001] The invention relates to printing screen making technology, and more specifically, to a multi-station laser screen making machine and a processing method. Background Art

[0002] Flat screen printing and rotary screen printing are conventional means of fabric printing, which form patterns with certain colors and patterns on the fabric surface to meet the requirements of fabric beauty and diversity. Among them, when using the flat screen printing process, the color paste is squeezed by the scraper through the flat screen with patterns to reach the fabric. The scraper goes back and forth once, the flat screen rises, and the fabric moves forward by the spacing of a cycle pattern. The flat screen falls, and the scraper operates again, and this is repeated continuously.

[0003] A Chinese patent with publication number CN110228280B discloses a 130T printing rotary screen, a preparation method and its application, and its technical key points are: including preparing a fetal membrane with a non-aligned mesh arrangement structure and three electroplating; preparing a fetal membrane with a non-aligned mesh arrangement structure, including using laser to engrave a fetal membrane with a non-aligned mesh arrangement structure, including the following steps: seamless steel tube machining, nickel plating, copper plating, chrome plating, coating photosensitive glue, exposure, laser engraving 130 mesh points with non-aligned mesh arrangement, etching mesh, embedding insulating glue, curing, and polishing.

[0004] When mesh is produced, the mesh is usually engraved and punched by laser engraving. Laser engraving requires a laser device. Since the operation adopts a single station, only one laser device is used. If the device fails due to long-term use, the entire mesh making process cannot continue and needs to be repaired before operation can be carried out, which slows down the overall progress and has low efficiency. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a multi-station laser mesh making machine and a processing method.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a multi-station laser mesh making machine, characterized in that: it includes a frame, the frame magnetic component is provided with a mesh cylinder and a driving mechanism for driving the mesh cylinder to rotate, the frame is provided with multiple punching stations, the punching stations are provided with laser punching devices and displacement mechanisms connected to the laser punching devices, the displacement mechanisms are used to drive the laser punching devices to translate along the length direction of the punching stations, the front end of the laser punching device is provided with a supporting mechanism for supporting the mesh cylinder, the supporting mechanism is provided with a high-definition camera at the same horizontal height as the laser punching device, which is used to scan and identify the meridians and pattern conditions of the mesh cylinder before and after laser punching.

[0007] The present invention is further configured as follows: the laser drilling device includes a laser generator and a laser emitting head, and the displacement mechanism is provided with a spacing adjustment mechanism connected to the laser drilling device for adjusting the spacing between the laser generator and the laser emitting head.

[0008] The present invention is further configured as follows: the displacement mechanism comprises a linear travel motor fixedly connected to the punching station, and the laser punching device slides along the travel direction of the linear travel motor.

[0009] The present invention is further configured as follows: the linear travel motor includes a plurality of stator units spliced ​​to each other, the stator unit includes a base, a magnetic assembly and a linear guide rail, the laser drilling device is slidably connected to the guide rail, the magnetic assembly includes a plurality of magnetic conductive plates arranged in parallel between the guide rails, and the magnetic conductive plates are provided with a plurality of permanent magnets arranged side by side along the sliding direction.

[0010] The present invention is further configured as follows: the linear guide rail is provided with a plurality of identification gratings arranged along the linear direction thereof and at equal intervals, and the number of the identification gratings located in the plurality of punching station intervals is the same.

[0011] The present invention is further configured as follows: the driving mechanism includes a driving motor and a clamping assembly for clamping the circular net, the driving motor and the clamping assembly are connected via a pulley group, the clamping assembly includes a fixed base and a movable base respectively arranged at the ends of the first and last punching stations, and a clamping head is rotatably arranged on one side of the fixed base and the movable base facing each other.

[0012] The present invention is further configured as follows: an adjustment mechanism is provided on the frame, and the adjustment mechanism is used to adjust the distance between the movable base and the fixed base.

[0013] The present invention is further configured as follows: the adjustment mechanism includes two guide rails arranged parallel to each other, a linear rack is arranged between adjacent guide rails, a brake mechanism is fixedly connected to the movable base, the brake mechanism includes a cam, a rocker and a brake column, the brake column is rotatably connected to the cam and the rocker, and in response to the rotation of the rocker to drive the cam to rotate and drive the brake column to vertically displace to separate or engage the linear rack.

[0014] The processing method of the multi-station laser mesh making machine includes the following steps: 1) Digital tracing: Select the appropriate mesh according to the pre-designed pattern accuracy requirements, retrieve the specification parameters of the corresponding mesh in the database, digitally trace the mesh, form an image displayed in grayscale, and obtain the mesh imaging; 2) Template imaging: Use a high-definition camera to scan the mesh, measure the arrangement of the mesh holes on the mesh, and distribute the pattern in combination with the arrangement of the mesh holes; 3) Screening process: Place the mesh on the mesh cylinder of the laser mesh making equipment, and realize multi-station punching through the setting of multiple laser punching devices, so that the mesh and the pattern are automatically divided into multiple areas; 3) Positioning and matching: Pre-draw the layout of the printed pattern, select the pixel points at each corner of the printed pattern as positioning points, overlap the pixel imaging and mesh imaging, and match the positioning points of the pixel imaging with the mesh of the mesh imaging; 4) Real-time monitoring: monitor the distance from the focusing lens to the mesh surface in real time, and dynamically adjust the focal length to ensure clear scanning and consistent spot size on the mesh surface; 5) Laser punching: The laser punching device emits laser to punch the mesh according to the pixel points. The warp is not punched during the punching process. Multiple stations work synchronously. If the laser punching device at any station fails, the machine can be stopped and replaced by other laser punching devices. 6) Feathering treatment: Feathering treatment is performed on the joints of multiple stations, and the finished product is obtained after the treatment is completed. The present invention is further configured as follows: the specific steps of the positioning and matching operation steps include: performing no-load operation when the laser generator is turned off, inputting a pre-drawn pattern format into the equipment, starting a drive motor and a displacement mechanism, scanning and identifying the circular screen on the clamping component, and selecting pixel points at each corner of the printed pattern as positioning points, overlapping pixel imaging and mesh imaging, pairing the positioning points of the pixel imaging with the meshes of the mesh imaging, and at the same time, through the magnetic component on the linear travel motor, combined with the identification grating on the linear guide rail, matching the mesh together with the multiple areas automatically divided into by the pattern.

[0015] In summary, the present invention has the following beneficial effects: The mesh making process of the present invention has simple steps and high efficiency. The mesh and the pattern are automatically divided into multiple areas. A multi-station setting is adopted, and a working mode of laser drilling is performed synchronously using multiple laser punching devices, which effectively reduces the power consumption of the laser and realizes high-precision and high-efficiency mesh making operations. Moreover, since there are multiple laser punching devices, when a laser punching device at any station fails, the machine can be automatically shut down and replaced by the remaining laser punching devices to ensure the normal operation of the equipment without stopping the entire process, thereby ensuring the process progress and high efficiency, which meets the production requirements of large-scale mesh making. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 for Figure 1An enlarged schematic diagram of part B; Figure 4 for Figure 1 An enlarged schematic diagram of the C portion; Figure 5 The structure of the present invention is schematically shown Figure 2 ; Figure 6 for Figure 5 An enlarged schematic diagram of the D portion; Figure 7 for Figure 5 An enlarged schematic diagram of part E of FIG. Figure 8 It is a structural schematic diagram of the brake mechanism in the present invention.

[0017] In the figure: 1. frame; 2. driving mechanism; 21. driving motor; 22. clamping assembly; 221. fixed base; 222. movable base; 223. clamping head; 3. laser drilling device; 31. laser generator; 32. laser transmitting head; 4. displacement mechanism; 5. base; 6. supporting mechanism; 7. magnetic assembly; 71. magnetic plate; 72. permanent magnet; 8. linear guide rail; 9. identification grating;. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: A multi-station laser mesh making machine comprises a frame 1, a magnetic component 7 of the frame 1 is provided with a mesh cylinder and a driving mechanism 2 for driving the mesh cylinder to rotate, a plurality of punching stations are provided on the frame 1, and each punching station is provided with a laser punching device 3 and a displacement mechanism 4 connected to the laser punching device 3, the displacement mechanism 4 is used to drive the laser punching device 3 to translate along the length direction of the punching station, a supporting mechanism 6 for supporting the mesh cylinder is provided at the front end of the laser punching device 3, and a high-definition camera at the same horizontal height as the laser punching device 3 is provided on the supporting mechanism 6 for scanning and identifying the meridians and pattern conditions of the mesh cylinder before and after laser punching.

[0020] The laser drilling device 3 includes a laser generator 31 and a laser emitting head 32. The displacement mechanism 4 is provided with a spacing adjustment mechanism connected to the laser drilling device 3 for adjusting the spacing between the laser generator 31 and the laser emitting head 32. In this embodiment, the laser generator 31 is displaced along the movement direction of the servo cylinder by a servo cylinder to adjust the spacing between the laser beam and the round screen. The displacement mechanism 4 includes a linear stroke motor fixedly connected to the punching station, and the laser punching device 3 slides along the stroke direction of the linear stroke motor. Specifically, the linear stroke motor includes a plurality of stator units spliced ​​to each other, and the stator unit includes a base 5, a magnetic component 7 and a linear guide rail 8. The laser punching device 3 is slidably connected to the guide rail. The magnetic component 7 includes a plurality of magnetic conductive plates 71 arranged in parallel between the guide rails. The magnetic conductive plates 71 are provided with a plurality of permanent magnets 72 arranged side by side along the sliding direction. The plurality of permanent magnets 72 are arranged in an alternating manner with the north pole up and down. The north pole and the south pole of the permanent magnet 72 are arranged alternately to form a periodic magnetic field change. By selecting a linear stroke motor, the laser punching device 3 can be displaced in the punching station, and at the same time, with the help of the change of the periodic magnetic field With the help of the central controller and the setting of Hall elements, the changes in the magnetic field are monitored to feedback the position of the laser drilling device 3, so that the processing position of the laser mesh can be controlled with high precision, so as to achieve the purpose of precise drilling of the circular mesh without warping during laser operation, which can greatly reduce the power demand of the laser generator 31, and the linear guide 8 is provided with a plurality of identification gratings 9 arranged along its straight direction and at equal intervals, and the number of identification gratings 9 located in a plurality of drilling station intervals is the same. When the displacement mechanism 4 drives the laser drilling device 3 to displace in each drilling station interval, the processing position can be judged with high precision through a plurality of identification gratings 9, which is applied to the fusion of the connection between two processing stations in the synchronous processing of multi-segment circular meshes.

[0021] The driving mechanism 2 includes a driving motor 21 and a clamping assembly 22 for clamping the round net. The driving motor 21 and the clamping assembly 22 are connected to each other through a pulley group. The clamping assembly 22 includes a fixed base 221 and a movable base 222 respectively arranged at the ends of the first and last punching stations. A clamping head 223 is rotatably arranged on one side of the fixed base 221 and the movable base 222 facing each other. In this embodiment, the driving motor 21 uses a servo motor to realize the rotation of the motor through program programming, and can cooperate with the laser punching device 3 to accurately punch the round net with high precision. The supporting mechanism 6 is in a semicircular arc shape, and the center of the supporting mechanism 6 is on the same horizontal line with the center of the clamping head 223. When the round net is fixed between the two clamping heads 223, the supporting mechanism 6 can also effectively support the round net, thereby avoiding the deformation of the long cylindrical round net under the action of its own gravity during laser punching, thereby improving the accuracy of punching.

[0022] An adjusting mechanism is provided on the frame 1, and the adjusting mechanism is used to adjust the distance between the mobile base 222 and the fixed base 221. In the present embodiment, the adjusting mechanism comprises two guide rails arranged parallel to each other, and the mobile base 222 is slidably connected to the frame 1 through the guide rails, and a linear rack is arranged between adjacent guide rails, and the linear rack is arranged parallel to the guide rails. A brake mechanism 10 is fixedly connected to the mobile base 222, and the brake mechanism 10 is located in the length direction of the linear rack. Specifically, the brake mechanism 10 comprises a cam, a rocker and a brake column, and the top end of the brake column is rotatably connected to the cam and the rocker, and in response to the rotation of the rocker to drive the cam to rotate and drive the brake column to vertically displace to separate or engage the linear rack, and the bottom end of the brake column is provided with a toothed structure, so that when the brake column is driven to displace downward and resist the linear rack when the cam rotates, the meshing state is maintained, thereby limiting the displacement of the mobile base 222.

[0023] Embodiment 2, a processing method of a multi-station laser mesh making machine, based on the multi-station laser mesh making machine of Embodiment 1, comprises the following steps: 1) Digital tracing: Select the appropriate mesh according to the pre-designed pattern accuracy requirements, retrieve the specification parameters of the corresponding mesh in the database, digitally trace the mesh, form an image displayed in grayscale, and obtain the mesh imaging; 2) Template imaging: Use a high-definition camera to scan the mesh, measure the arrangement of the mesh holes on the mesh, and distribute the pattern in combination with the arrangement of the mesh holes; 3) Screening process: placing the mesh on the mesh cylinder of the laser mesh making equipment, and realizing multi-station punching through the setting of multiple laser punching devices 3, so as to automatically divide the mesh together with the pattern into multiple areas; 3) Positioning and matching: Pre-draw the layout of the printed pattern, select the pixel points at each corner of the printed pattern as positioning points, overlap the pixel imaging and mesh imaging, and match the positioning points of the pixel imaging with the mesh of the mesh imaging; 4) Real-time monitoring: monitor the distance from the focusing lens to the mesh surface in real time, and dynamically adjust the focal length to ensure clear scanning and consistent spot size on the mesh surface; 5) Laser punching: The laser punching device 3 emits laser to punch the mesh according to the pixel points. No warping is done during the punching process. Multiple stations work synchronously. If the laser punching device 3 at any station fails, the machine can be stopped and replaced by other laser punching devices 3. 6) Feathering treatment: Feathering treatment is carried out on the parts where multiple stations are connected, and the finished product is obtained after the treatment is completed.

[0024] Among them, the specific steps of the positioning and matching operation steps include: running at no load when the laser generator 31 is turned off, inputting the pre-drawn pattern format into the equipment, starting the drive motor 21 and the displacement mechanism 4, scanning and identifying the circular screen on the clamping component 22, and selecting the pixel points at each corner of the printed pattern as positioning points, overlapping the pixel imaging and the mesh imaging, pairing the positioning points of the pixel imaging with the mesh of the mesh imaging, and at the same time, through the magnetic component 7 on the linear travel motor, combined with the identification grating 9 on the linear guide rail 8, matching the mesh together with the multiple areas automatically divided into by the pattern.

[0025] Working process: Place the cylindrical screen with a long cylindrical structure between the two chucks 223, so that the cylindrical screen is mounted on the chuck 223 on the fixed base 221, and then directly pull the movable base 222 to make the movable base 222 approach the fixed base 221 until the other end of the cylindrical screen is mounted on the chuck 223 on the movable base 222, and then use tape to tighten the chuck 223 and the cylindrical screen to limit the deviation of the cylindrical screen during processing, so as to realize the synchronous rotation of the chuck 223 and the cylindrical screen; After the installation of the round screen is completed, the template imaging process is carried out, and the driving motor 21 is started to slowly rotate the chuck 223 to drive the round screen to rotate synchronously. At the same time, the supporting mechanism 6 supports the round screen and simultaneously scans the round screen section in the corresponding punching station interval through multiple high-definition cameras. At the same time, by selecting a linear stroke motor, the magnetic conductive plate 71 and the permanent magnet 72 are arranged in an alternating manner of the north pole up and down, and the north pole and the south pole of the permanent magnet 72 are arranged alternately to form a periodic magnetic field change. During the initial displacement, the Hall sensor collects and records the change law of the magnetic field, and with the help of the setting of the identification grating 9, it can be further calibrated to form a mark for the processing area. When the round screen rotates and the displacement device drives the displacement, the high-definition camera identifies the holes of the round screen, and is synchronously matched with the previously identified magnetic field changes and grating laws through the controller, and the arrangement law and spacing of the mesh holes on the round screen are measured, and the image recorded in the system is combined The arrangement of the mesh holes is distributed, and the positioning and matching are performed. The pixel points of each corner of the printed pattern are molded according to the specifications of the round screen. The pixel points of each corner of the printed pattern are used as positioning points, and the meshes on the round screen are matched. When the laser transmitter is turned off for an empty run, the hole position of the round screen is checked, and the focal length is dynamically adjusted. The distance between the laser generator 31 and the laser transmitter head 32 is adjusted. After the empty run scan is completed, the laser netting operation is performed, and the laser punching device 3 of each punching station synchronously punches the corresponding area. The rotary net is laser-made. Since the front process scans the mesh of the rotary net and matches the pattern with the mesh, high-precision punching without warping is achieved with the cooperation of the high-definition camera, which can reduce the energy consumption of laser net making. When the laser punching device 3 of the previous punching station is moved to the end of the punching station, that is, the initial section of the adjacent punching station, the initial section of the adjacent next punching station is scanned and punched for the second time, and the feathering treatment of the multi-station connection part is completed, the multi-segment synchronous net making of the rotary net can be efficiently completed.

[0026] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A multi-station laser mesh making machine, characterized in that: The invention comprises a frame (1), wherein a magnetic component (7) of the frame (1) is provided with a net cylinder and a driving mechanism (2) for driving the net cylinder to rotate, wherein a plurality of punching stations are provided on the frame (1), wherein each of the punching stations is provided with a laser punching device (3) and a displacement mechanism (4) connected to the laser punching device (3), wherein the displacement mechanism (4) is used to drive the laser punching device (3) to translate along the length direction of the punching station, wherein a supporting mechanism (6) for supporting the net cylinder is provided at the front end of the laser punching device (3), wherein a high-definition camera located at the same level as the laser punching device (3) is provided on the supporting mechanism (6), and is used to scan and identify the meridians and pattern conditions of the net cylinder before and after laser punching.

2. The multi-station laser mesh making machine according to claim 1, characterized in that: The laser drilling device (3) comprises a laser generator (31) and a laser emitting head (32), and the displacement mechanism (4) is provided with a spacing adjustment mechanism connected to the laser drilling device (3) and used for adjusting the spacing between the laser generator (31) and the laser emitting head (32).

3. The multi-station laser mesh making machine according to claim 1, characterized in that: The displacement mechanism (4) comprises a linear travel motor fixedly connected to the punching station, and the laser punching device (3) slides along the travel direction of the linear travel motor.

4. The multi-station laser mesh making machine according to claim 3, characterized in that: The linear travel motor comprises a plurality of stator units spliced ​​to each other, the stator units comprising a base (5), a magnetic assembly (7) and a linear guide rail (8), the laser drilling device (3) being slidably connected to the guide rail, the magnetic assembly (7) comprising a plurality of magnetic conductive plates (71) arranged in parallel between the guide rails, and the magnetic conductive plates (71) being provided with a plurality of permanent magnets (72) arranged side by side along a sliding direction.

5. The multi-station laser mesh making machine according to claim 3, characterized in that: The linear guide rail (8) is provided with a plurality of identification gratings (9) arranged along the linear direction thereof and at equal intervals, and the number of the identification gratings (9) located in the plurality of punching station intervals is the same.

6. The multi-station laser mesh making machine according to claim 1, characterized in that: The driving mechanism (2) comprises a driving motor (21) and a clamping assembly (22) for clamping a round net, the driving motor (21) and the clamping assembly (22) being connected to each other by a belt pulley group, the clamping assembly (22) comprising a fixed base (221) and a movable base (222) respectively arranged at the ends of the first and last punching stations, and a clamping head (223) is rotatably arranged on one side of the fixed base (221) and the movable base (222) facing each other.

7. The multi-station laser mesh making machine according to claim 6, characterized in that: The frame (1) is provided with an adjustment mechanism, and the adjustment mechanism is used to adjust the distance between the movable base (222) and the fixed base (221).

8. The multi-station laser mesh making machine according to claim 6, characterized in that: The adjustment mechanism comprises two guide rails arranged parallel to each other, a linear rack is arranged between adjacent guide rails, a brake mechanism (10) is fixedly connected to the movable base (222), the brake mechanism (10) comprises a cam, a rocker and a brake column, the brake column is rotatably connected to the cam and the rocker, and in response to the rotation of the rocker to drive the cam to rotate, the brake column is driven to vertically displace to separate or engage the linear rack.

9. A processing method of a multi-station laser mesh making machine, using the multi-station laser mesh making machine as claimed in any one of claims 1 to 8, characterized in that: The steps include: 1) Digital tracing: Select the appropriate mesh according to the pre-designed pattern accuracy requirements, retrieve the specification parameters of the corresponding mesh in the database, digitally trace the mesh, form an image displayed in grayscale, and obtain the mesh imaging; 2) Template imaging: Use a high-definition camera to scan the mesh, measure the arrangement of the mesh holes on the mesh, and distribute the pattern in combination with the arrangement of the mesh holes; 3) Screening process: placing the mesh on the mesh cylinder of the laser mesh making equipment, and realizing multi-station punching by setting up multiple laser punching devices (3), so as to automatically divide the mesh together with the pattern into multiple areas; 3) Positioning and matching: Pre-draw the layout of the printed pattern, select the pixel points at each corner of the printed pattern as positioning points, overlap the pixel imaging and mesh imaging, and match the positioning points of the pixel imaging with the mesh of the mesh imaging; 4) Real-time monitoring: monitor the distance from the focusing lens to the mesh surface in real time, and dynamically adjust the focal length to ensure clear scanning and consistent spot size on the mesh surface; 5) Laser punching: The laser punching device (3) emits laser to punch the mesh according to the pixel points. No warping is performed during the punching process. Multiple stations work synchronously. If the laser punching device (3) at any station fails, the machine can be stopped and replaced by other laser punching devices (3). 6) Feathering treatment: Feathering treatment is carried out on the parts where multiple stations are connected, and the finished product is obtained after the treatment is completed.

10. The processing method of the multi-station laser mesh making machine according to claim 9, characterized in that: The specific steps of the positioning and matching operation steps include: running at no load with the laser generator (31) turned off, inputting a pre-drawn pattern format into the device, starting the drive motor (21) and the displacement mechanism (4), scanning and identifying the circular screen on the clamping component (22), and selecting the pixel points at each corner of the printed pattern as positioning points, overlapping the pixel imaging and the mesh imaging, matching the positioning points of the pixel imaging with the mesh of the mesh imaging, and matching the mesh together with the multiple areas automatically divided into by the pattern through the magnetic component (7) on the linear travel motor and the identification grating (9) on the linear guide rail (8).

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