Roll-to-roll double-sided laser direct writing exposure system

Abstract

The invention provides a roll-to-roll double-sided laser direct writing exposure system, which belongs to the field of intelligent laser processing and comprises a movable exposure station, a material table A, a material table B, two movable alignment modules, a roll feeding module and a longitudinal movement driving module which are arranged on a machine table, the material platform A and the material platform B are fixedly arranged at an interval front and back; the movable exposure station stretches across the two material platforms and can longitudinally move between the two material platforms so as to perform exposure imaging on materials below the movable exposure station; a movable alignment module is arranged above each material table in a crossing manner, and each movable alignment module longitudinally moves to align materials at the corresponding material table; and the roll feeding module is used for conveying the material from the material table A to the material table B to realize front and back exposure and rolling and blanking at the downstream of the material table B. According to the system, double fixed material platforms, alignment and exposure head movement are adopted, materials are continuously supplied and discharged in a roll-to-roll arrangement manner, the overall efficiency of exposure imaging is improved, and popularization and application in the field of laser processing imaging of soft plates are facilitated.

Description

Technical Field

[0001] The invention belongs to the field of laser processing, and in particular relates to a roll-to-roll double-sided laser direct writing exposure system. Background Art

[0002] Laser Direct Imaging (LDI) is a device that uses laser beams to accurately project circuit patterns onto photosensitive materials to form high-precision circuit board patterns. It is mainly used in the field of circuit board manufacturing, especially in the exposure process of PCB (Printed Circuit Board) technology.

[0003] For roll-to-roll LDI, the biggest problem currently faced is the insufficient exposure efficiency. Although the dual-stage alternating loading and unloading exposure (the stage moves, and the exposure station and alignment module are fixed) has been adopted to improve efficiency to a certain extent, this alternating node consumption still restricts the exposure efficiency. Therefore, it is necessary to develop a new type of exposure equipment. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a roll-to-roll double-sided laser direct writing exposure system, which can solve the above-mentioned problems.

[0005] Design principle: Double material tables are used, but the material tables are fixed, and the alignment and exposure heads are movable. The materials are arranged roll to roll, and after being exposed from one material table to another, they are unloaded and rewound at the same output. The overall design is as follows.

[0006] A roll-to-roll double-sided laser direct writing exposure system comprises a mobile exposure station, a material table A, a material table B, two mobile alignment modules and a roll feeding module arranged on a machine platform; the material table A and the material table B are fixedly arranged with a front-to-back interval; the mobile exposure station spans over the two material tables and can move longitudinally between the two material tables to expose and image the material below; a mobile alignment module is arranged across the top of each material table, and each mobile alignment module moves longitudinally to align the material at the corresponding material table; the roll feeding module is used to transfer the material from the material table A to the material table B to realize front and back exposure and to rewind and unload the material downstream of the material table B.

[0007] Furthermore, the mobile exposure station includes a laser array processing module, a laser transverse fixed base plate, a laser transverse drive module, a laser longitudinal top beam and a laser longitudinal drive vertical plate; a plurality of laser heads of the laser array processing module are arranged in an array and are vertically fixed to the laser transverse fixed base plate, the bottom of the laser transverse fixed base plate is arranged on the top plate of the laser longitudinal top beam for transverse movement through the laser transverse drive module, a transverse exposure hole is opened in the middle of the laser longitudinal top beam along the transverse direction, and the lower part of the two side ends of the laser longitudinal top beam is connected to the longitudinal drive modules on both sides of the machine through the laser longitudinal drive vertical plate.

[0008] Furthermore, the material platform structures of material platforms A and B are the same, and the material platforms include a lifting platform module and an adsorption carrier module; the bottom of the height-adjustable lifting platform module is fixedly connected to the top surface of the machine, and the adsorption carrier module with a vacuum suction plate is arranged on the top of the lifting platform module.

[0009] Furthermore, an exposure calibration module is also provided at the feeding end of the adsorption carrier module for calibrating the material before exposure.

[0010] Furthermore, the exposure calibration module adopts fixed and mobile types, including a calibration frame and a calibration camera. In the fixed case, the calibration frame is transferred and installed to the front feed side plate of the adsorption carrier module. In the mobile case, the calibration frame is transferred to the front feed side plate of the adsorption carrier module through a calibration sliding drive module.

[0011] Furthermore, the mobile alignment module includes an alignment cross beam, an alignment adapter plate group, an alignment transverse shift drive module, and an alignment light source in front of the alignment camera lens assembly. The alignment camera lens assembly and the alignment light source are connected to the movable end of the alignment transverse shift drive module. The alignment transverse shift drive module is horizontally driven by the alignment adapter plate group and is arranged on the alignment cross beam. A longitudinal shift drive adapter vertical plate is longitudinally arranged below the two ends of the cross beam of the alignment cross beam, and an electrical connecting plate is arranged at the bottom of the longitudinal shift drive adapter vertical plate.

[0012] Furthermore, the roll feeding module adopts multiple sets of driving rollers, and the material is transferred from the A material table to the B material table, and is transported and exposed to the image with the front side facing up on the A material table, and is transported and exposed to the image with the back side facing up on the B material table.

[0013] Furthermore, the longitudinal drive module includes a longitudinal drive assembly arranged on both sides of the machine and a longitudinal sliding assembly arranged on the top surface of the machine near both sides, wherein the vertical plates on both sides of the mobile exposure station and the two mobile alignment modules are transferred to the mover of the longitudinal drive assembly, and the bottom of the mobile exposure station and the two mobile alignment modules are connected to the longitudinal sliding assembly and slide along the slide rail.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the system adopts double fixed material tables, positioning and exposure head movement, and the materials are arranged roll-to-roll for continuous feeding and unloading, which improves the overall efficiency of exposure and imaging and is convenient for promotion and application in the field of laser processing and imaging of soft plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 and Figure 2 Schematic diagram of different viewing angles of the roll-to-roll double-sided laser direct writing exposure system of this application; Figure 3 is a schematic diagram of a mobile exposure station; Figure 4 It is a schematic diagram of the A material station and the B material station; Figure 5 A schematic diagram of a mobile alignment module.

[0016] In the figure, 100, mobile exposure station; 110, laser array processing module; 120, laser transverse fixed bottom plate; 130, laser transverse drive module; 140, laser longitudinal top beam; 150, laser longitudinal drive vertical plate; 200, A material platform; 300, B material platform; 231, lifting platform module; 232, adsorption carrier module; 233, exposure calibration module; 2331, calibration frame; 2332, calibration camera; 2333, calibration sliding drive module; 400, mobile alignment module; 410, alignment cross beam; 420, alignment adapter plate group; 430, alignment transverse shift drive module; 440, alignment camera lens assembly; 450, front alignment light source; 460, electrical connection board; 500, roll feeding module; 600, longitudinal drive module; 610, longitudinal drive linear motor; 620, inner longitudinal sliding assembly; 630, outer longitudinal sliding assembly; 1000. Machine. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0018] It should be understood that the "system", "device", "mechanism", "component", "module" and / or "module" used in this specification is a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0019] A roll-to-roll double-sided laser direct writing exposure system, see Figure 1-Figure 5 , including a movable exposure station 100, an A material table 200, a B material table 300, two movable alignment modules 400, a roll feeding module 500 and a longitudinal driving module arranged on a machine platform 1000.

[0020] Layout relationship: A material table 200 and B material table 300 are arranged in a fixed manner with a front-to-back interval; the mobile exposure station 100 spans over the two material tables and can move longitudinally between the two material tables to expose and image the material below; a mobile alignment module 400 is arranged across each material table, and each mobile alignment module 400 moves longitudinally to align the material at the corresponding material table; the roll feeding module 500 is used to transfer the material from A material table 200 to B material table 300 to realize front and back exposure and reel and unload the material downstream of B material table 300. The longitudinal movement drive modules 600 are arranged on both sides and both sides of the top surface of the machine table 1000.

[0021] Among them, see Figure 3 The mobile exposure station 100 includes a laser array processing module 110, a laser transverse movement fixed base plate 120, a laser transverse movement driving module 130, a laser longitudinal movement top beam 140 and a laser longitudinal movement driving vertical plate 150.

[0022] The multiple laser heads of the laser array processing module 110 are arranged in an array and are vertically fixed to the laser transverse shift fixed base plate 120. The bottom of the laser transverse shift fixed base plate 120 is arranged on the top plate of the laser longitudinal shift top beam 140 for transverse movement through the laser transverse shift driving module 130. A transverse shift exposure hole is opened in the middle of the laser longitudinal shift top beam 140 along the transverse direction. The lower part of the two side ends of the laser longitudinal shift top beam 140 is transversely connected to the longitudinal shift driving module 600 on both sides of the machine 1000 through the laser longitudinal shift driving vertical plate 150.

[0023] Among them, see Figure 4 The material platform structures of the A material platform 200 and the B material platform 300 are the same, and the material platforms include a lifting platform module 231 and an adsorption carrier module 232; the bottom of the height-adjustable lifting platform module 231 is fixedly connected to the top surface of the machine platform 1000, and the adsorption carrier module 232 with a vacuum suction plate is arranged on the top of the lifting platform module 231.

[0024] Furthermore, an exposure calibration module 233 is also provided at the feeding end of the adsorption carrier module 232 for calibration of the material before exposure. The exposure calibration module 233 is fixed and mobile, and includes a calibration frame 2331 and a calibration camera 2332. In the fixed case, the calibration frame 2331 is transferred and installed on the feeding front end side plate of the adsorption carrier module 232. In the mobile case, the calibration frame 2331 is transferred to the feeding front end side plate of the adsorption carrier module 232 through a calibration sliding drive module 2333.

[0025] Further, the calibration camera 2332 can be a plurality of cameras arranged side by side in an array, or can be a single camera, which is applicable to a mobile layout structure.

[0026] Furthermore, a calibration cover may be disposed above the calibration camera 2332, with one or more calibration holes being provided on the calibration cover.

[0027] Among them, see Figure 5 The mobile alignment module 400 includes an alignment cross beam 410, an alignment adapter plate group 420, an alignment transverse shift drive module 430, an alignment light source 450 in front of an alignment camera lens assembly 440, the alignment camera lens assembly 440 and the alignment light source 450 are connected to the movable end of the alignment transverse shift drive module 430, the alignment transverse shift drive module 430 is horizontally driven by the alignment adapter plate group 420 and is arranged on the alignment cross beam 410, and a longitudinal shift drive adapter vertical plate 450 is longitudinally arranged below the two ends of the cross beam of the alignment cross beam 410, and an electrical connection plate 460 is arranged at the bottom of the longitudinal shift drive adapter vertical plate 450.

[0028] Furthermore, a grating ruler matching the alignment and transverse movement driving module 430 is provided on the alignment adapter plate group 420 , and alignment and transverse movement limit components are provided at both ends of the alignment adapter plate group 420 .

[0029] Among them, the roll feeding module 500 adopts multiple sets of driving rollers, and the material is transferred from the A material table 200 to the B material table 300. In an example, the material is transported and exposed to the image with the front side facing up on the A material table 200, and is transported and exposed to the image with the back side facing up on the B material table 300.

[0030] Among them, the longitudinal movement driving module 600 includes a longitudinal movement driving component 610 arranged on both sides of the machine 1000, and a longitudinal sliding component arranged on the top surface of the machine 1000 near both sides, wherein the vertical plates on both sides of the mobile exposure station 100 and the two mobile alignment modules 400 are transferred to the mover of the longitudinal movement driving component 610, and the bottom of the mobile exposure station 100 and the two mobile alignment modules 400 are connected to the longitudinal sliding component and slide along the slide rail.

[0031] In a specific example, the longitudinal drive assembly 610 is driven by a linear motor, a motor screw, a cylinder, etc. A linear motor is preferably used in the figure. The stator of the specific linear motor is installed on the outer walls on both sides of the machine 1000, and the mover is connected to the vertical plates on both sides of the mobile exposure station 100 and the two mobile alignment modules 400.

[0032] The longitudinal sliding assembly preferably adopts a slide rail and slider assembly, and one or more slide rails can be arranged side by side. In the illustrated example, an inner longitudinal sliding assembly 620 and an outer longitudinal sliding assembly 630 are preferably arranged on both sides of the top surface of the machine 1000. The bottom of the mobile exposure station 100 and the two mobile alignment modules 400 are connected to the sliders of the inner longitudinal sliding assembly 620 and the outer longitudinal sliding assembly 630 and slide along the slide rails.

[0033] In a specific example, the bottom of the mobile exposure station 100 is mounted to two inner longitudinal sliding assemblies 620 , and the bottoms of the two mobile alignment modules 400 are mounted to two outer longitudinal sliding assemblies 630 .

[0034] Compared with the traditional positioning and exposure module fixing solutions, the overall exposure efficiency of this system is significantly improved and can be widely used in fields such as flexible boards.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roll-to-roll double-sided laser direct writing exposure system, characterized in that: The invention comprises a movable exposure station (100), an A material table (200), a B material table (300), two movable alignment modules (400) and a roll feeding module (500) arranged on a machine platform (1000); the A material table (200) and the B material table (300) are fixedly arranged with a front-to-back interval; the movable exposure station (100) spans over the two material tables and can move longitudinally between the two material tables to expose and image the material below; a movable alignment module (400) is arranged across the top of each material table, and each movable alignment module (400) moves longitudinally to align the material at the corresponding material table; The roll feeding module (500) is used to transfer the material from the A material platform (200) to the B material platform (300) to achieve front and back side exposure and to reel and unload the material downstream of the B material platform (300).

2. The roll-to-roll double-sided laser direct writing exposure system according to claim 1, characterized in that: The mobile exposure station (100) comprises a laser array processing module (110), a laser transverse movement fixed bottom plate (120), a laser transverse movement driving module (130), a laser longitudinal movement top beam (140) and a laser longitudinal movement driving vertical plate (150); The multiple laser heads of the laser array processing module (110) are arranged in an array and are vertically fixed to the laser transverse shift fixed base plate (120). The bottom of the laser transverse shift fixed base plate (120) is arranged on the top plate of the laser longitudinal shift top beam (140) for transverse movement through a laser transverse shift driving module (130). A transverse shift exposure hole is opened in the middle of the laser longitudinal shift top beam (140) along the transverse direction. The lower sides of the two side ends of the laser longitudinal shift top beam (140) are connected to the longitudinal shift driving modules (600) on both sides of the machine platform (1000) through the laser longitudinal shift driving vertical plates (150).

3. The roll-to-roll double-sided laser direct writing exposure system according to claim 1, characterized in that: The material platform A (200) and the material platform B (300) have the same material platform structure, and the material platforms comprise a lifting platform module (231) and an adsorption carrier module (232); the bottom of the height-adjustable lifting platform module (231) is fixedly connected to the top surface of the machine platform (1000), and the adsorption carrier module (232) provided with a vacuum suction plate is arranged on the top of the lifting platform module (231).

4. The roll-to-roll double-sided laser direct writing exposure system according to claim 3, characterized in that: An exposure calibration module (233) is also provided at the feeding end of the adsorption carrier module (232) for calibrating the material before exposure.

5. The roll-to-roll double-sided laser direct writing exposure system according to claim 4, characterized in that: The exposure calibration module (233) is of fixed and mobile types, and includes a calibration frame (2331) and a calibration camera (2332). In the fixed type, the calibration frame (2331) is transferred and installed on the front feeding side plate of the adsorption carrier module (232). In the mobile type, the calibration frame (2331) is transferred to the front feeding side plate of the adsorption carrier module (232) via a calibration sliding drive module (2333).

6. The roll-to-roll double-sided laser direct writing exposure system according to claim 1, characterized in that: The mobile alignment module (400) comprises an alignment cross beam (410), an alignment adapter plate group (420), an alignment transverse shift drive module (430), and an alignment light source (450) in front of an alignment camera lens assembly (440). The alignment camera lens assembly (440) and the alignment light source (450) are connected to the movable end of the alignment transverse shift drive module (430). The alignment transverse shift drive module (430) is horizontally driven by the alignment adapter plate group (420) and is arranged on the alignment cross beam (410). A longitudinal shift drive adapter vertical plate (450) is longitudinally arranged below the two ends of the cross beam of the alignment cross beam (410). An electrical connection plate (460) is arranged at the bottom of the longitudinal shift drive adapter vertical plate (450).

7. The roll-to-roll double-sided laser direct writing exposure system according to claim 1, characterized in that: The roll feeding module (500) uses a plurality of sets of driving rollers, and the material is transferred from the A material platform (200) to the B material platform (300), and is transported with the front side facing upward and exposed to form an image on the A material platform (200), and is transported with the back side facing upward and exposed to form an image on the B material platform (300).

8. The roll-to-roll double-sided laser direct writing exposure system according to claim 1, characterized in that: The longitudinal drive module (600) comprises a longitudinal drive assembly (610) arranged on both sides of the machine platform (1000) and a longitudinal sliding assembly arranged on the top surface of the machine platform (1000) near both sides, wherein the vertical plates on both sides of the mobile exposure station (100) and the two mobile alignment modules (400) are transferred to the mover of the longitudinal drive assembly (610), and the bottoms of the mobile exposure station (100) and the two mobile alignment modules (400) are connected to the longitudinal sliding assembly and slide along the slide rail.

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