A rigid workpiece bevel exposure apparatus

Abstract

The embodiment of the application provides a rigid workpiece bevel exposure device, which is used for improving the precision of a laser direct writing imaging device. The rigid workpiece is driven by a harmonic reducer to perform linear stepping motion, and a light source module performs linear scanning operation in the vertical direction of the linear stepping motion, without the light source module moving in the horizontal and vertical directions at the same time, thereby avoiding vertical position errors caused by multiple scanning motions and improving the precision of exposure imaging. Secondly, the scanning motion carrier and the roller driving system are both installed on the first bevel of the base, so that the feeding and discharging are both in the form of bevel feeding and discharging, thereby avoiding the rigid workpiece occupying too large horizontal space in the horizontal direction when feeding and discharging in the horizontal direction, and saving production space. Finally, the device adopts a harmonic reducer as a transmission structure, which is small in size, light in weight and simple in structure, and the backlash of the harmonic reducer is generally within 1 arc minute, so that the high-precision stepping of the rigid workpiece can be ensured, and the imaging precision is further improved.

Description

Technical Field

[0001] This application relates to the field of laser direct writing imaging technology, and in particular to an exposure device for a rigid workpiece inclined surface. Background Technology

[0002] Laser imaging technology controls a laser assembly to scan and expose a photosensitive coating on an exposure surface, then develops the exposed coating to generate the desired image. Compared to existing mask-based imaging technologies, laser imaging eliminates the need for a mask, significantly reducing production costs.

[0003] Laser imaging devices in related technologies (such as the laser direct plate-making device for flat screen printing plates disclosed in application number: 201310084860.3) often control the laser assembly to simultaneously scan the exposure surface back and forth in a preset horizontal and vertical direction to expose the surface to be processed of a rigid workpiece.

[0004] The applicant discovered that in the relevant laser imaging equipment, during operation, the equipment moves simultaneously in a preset horizontal and vertical direction. The vibrations from each horizontal reciprocating motion affect the vertical position of the laser. Multiple horizontal scans are required during a single production run, leading to significant vertical positioning errors and consequently impacting the accuracy of exposure imaging. Therefore, it is necessary to improve the existing laser imaging equipment. Summary of the Invention

[0005] This application provides a rigid workpiece inclined surface exposure device to improve the imaging accuracy of laser direct writing imaging equipment.

[0006] The first aspect of this application provides a rigid workpiece inclined surface exposure device, which may include:

[0007] The system comprises a base, a scanning motion stage, a roller drive system, a pressing system, and a light source module. The scanning motion stage is mounted on a first inclined surface of the base, and a transverse guide rail is provided on the first inclined surface. When the scanning motion stage reciprocates along the transverse guide rail, the light source in the light source module on the scanning motion stage exposes the photosensitive coating on the rigid workpiece. The first inclined surface is not perpendicular to the horizontal direction.

[0008] The roller drive system includes a fixed plate, a stepper motor, a harmonic reducer, a rolling main bearing, and a bearing housing. The fixed plate is disposed at both ends of the base and is respectively connected to the rigid wheel of the harmonic reducer and the bearing housing. The wave generator of the harmonic reducer is connected to the main shaft of the stepper motor, and the flexible wheel of the harmonic reducer is coaxially connected to the rolling main bearing to drive the rolling main bearing to roll and drive the rigid workpiece to move linearly along the direction perpendicular to the straight line of the transverse guide rail on the parallel plane of the first inclined plane.

[0009] The pressing system is positioned on the opposite side of the photosensitive coating on the rigid workpiece and includes a pressure plate whose position can be adjusted in the vertical direction of the photosensitive coating, so as to press the rigid workpiece during linear movement to maintain its stability in the vertical direction of the photosensitive coating.

[0010] Optionally, as one possible implementation, in this embodiment of the application, the light source module is a linear array or a surface array composed of multiple laser light sources.

[0011] Optionally, as one possible implementation, in this embodiment of the application, the light source module is a light source containing a DMD digital micromirror device.

[0012] Optionally, as a possible implementation, in this embodiment of the application, the end of the pressure plate is provided with a flexible component.

[0013] Optionally, as a possible implementation, in this embodiment of the application, the position of the pressure plate in the vertical direction of the photosensitive coating is adjusted by a cylinder.

[0014] Optionally, as a possible implementation, in this embodiment of the application, the position of the pressure plate in the vertical direction of the photosensitive coating is adjusted by electromagnetic force.

[0015] Optionally, as a possible implementation, in this embodiment of the application, the pressing system further includes a support beam, which is fixed to the fixed plate.

[0016] Optionally, as one possible implementation, in this embodiment of the application, the number of pressure plates in the pressing system is multiple.

[0017] Optionally, as a possible implementation, the rigid workpiece inclined surface exposure device in this application embodiment may further include: two support platforms located on both sides of the base, for supporting the rigid workpiece in the vertical direction of the photosensitive coating.

[0018] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0019] In the rigid workpiece inclined surface exposure equipment of this application embodiment, the rigid workpiece performs linear stepping motion driven by a harmonic reducer. Simultaneously, the light source module performs linear scanning in the vertical direction of the linear stepping motion. This eliminates the need for the light source module to move simultaneously in both the horizontal and vertical directions, avoiding vertical positional errors caused by multiple scanning movements and improving the accuracy of laser direct-write imaging. Secondly, both the scanning motion stage and the roller drive system are mounted on the first inclined surface of the base, ensuring that the rigid workpiece enters and exits at an inclined plane. This avoids the horizontal length occupied by the rigid workpiece when entering and exiting in the horizontal direction, saving production space. Finally, the rigid workpiece inclined surface exposure equipment of this application embodiment uses a harmonic reducer as the transmission structure, which is small in size, lightweight, and simple in structure. Furthermore, the hysteresis of the harmonic reducer is generally within 1 arcminute, and the displacement accuracy of the rolling main bearing driven by the output flexible wheel of the harmonic reducer is high, ensuring high-precision stepping of the rigid workpiece and further improving the accuracy of laser direct-write imaging. Attached Figure Description

[0020] Figure 1 This is a possible structural side view of a rigid workpiece inclined surface exposure device according to an embodiment of this application;

[0021] Figure 2 This is a possible rear view of a rigid workpiece inclined surface exposure device according to an embodiment of this application. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] The terms "first," "second," "third," "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] In the description of this application, unless otherwise stated, "a plurality of" means two or more. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0025] For ease of understanding, the specific configuration of the rigid workpiece inclined surface exposure equipment in the embodiments of this application is described below. Please refer to [link / reference]. Figure 1 and Figure 2 One embodiment of the rigid workpiece inclined surface exposure device in this application may include:

[0026] The system comprises a base 10, a scanning motion stage 20, a roller drive system 30, a pressing system 40, and a light source module 50. The scanning motion stage 20 is mounted on a first inclined surface of the base 10, and a transverse guide rail 101 is provided on the first inclined surface. When the scanning motion stage 20 reciprocates along the transverse guide rail 101, the light source in the light source module 50 on the scanning motion stage 20 exposes the photosensitive coating on the rigid workpiece S (e.g., aluminum mesh frame, steel mesh frame, wooden mesh frame, plastic mesh frame, PCB board, etc.) 60.

[0027] Optionally, as a possible implementation, the roller drive system 30 in this embodiment is mounted on the first inclined plane and may include a fixed plate 301, a stepper motor (not shown), a harmonic reducer (not shown, mainly including a wave generator, a flexible wheel, and a rigid wheel; in this application, the wave generator is active, the rigid wheel is fixed, and the flexible wheel is output), a rolling main bearing 302, and a bearing seat (not shown, used to support and position the bearing). The fixed plate 301 is disposed at both ends of the base 10, and its specific shape is not limited; it is only necessary to connect and fix the rigid wheel of the harmonic reducer and the bearing seat to the base 10 respectively. The wave generator of the harmonic reducer is connected to the main shaft of the stepper motor, and the wave generator is driven by the main shaft of the stepper motor to drive the flexible wheel of the harmonic reducer to rotate. The flexible wheel of the harmonic reducer is coaxially connected to the rolling main bearing 302 of the roller drive system 30 to drive the rolling main bearing 302 to roll around the axis. When the rigid workpiece is placed above or below the rolling main bearing, it is driven to move linearly in the direction perpendicular to the straight line of the guide rail on the parallel plane of the first inclined plane.

[0028] The pressing system 40 is disposed on the opposite side of the photosensitive coating on the rigid workpiece to press the rigid workpiece to maintain its stability in the vertical direction of the photosensitive coating during the linear movement of the rigid workpiece.

[0029] Optionally, as a possible implementation, the pressing system 40 in this embodiment may include a pressure plate whose position can be adjusted in the vertical direction of the photosensitive coating. Specifically, the pressure plate can be adjusted by rotating and moving it with a cylinder, or by vertically lifting and lowering it with a motor or electromagnetic force. There may be one or more pressure plates.

[0030] Optionally, to avoid wear on rigid workpieces caused by mechanical friction, flexible components, such as rubber components or silicone components, can be provided at the end of the pressure plate.

[0031] Optionally, as a possible implementation, the light source module 50 in this application embodiment can be a linear array or a surface array composed of multiple laser light sources, or it can be a light source containing a DMD digital micromirror device (modulating the laser light source through the DMD).

[0032] Optionally, as a possible implementation, in order to maintain the stability of the rigid workpiece during movement, two support platforms can also be provided on both sides of the base 10 in this embodiment of the application to support the rigid workpiece in the vertical direction of the photosensitive coating.

[0033] Optionally, as a possible implementation, in order to maintain the stability of the rigid workpiece during movement, in this embodiment of the application, the pressing system 40 further includes a support beam 401, which is fixed on the fixed plate 301, and the pressure plate and its driving structure can be connected to the beam.

[0034] In the rigid workpiece inclined surface exposure equipment of this application embodiment, the rigid workpiece performs linear stepping motion driven by a harmonic reducer. Simultaneously, the light source module performs linear scanning in the vertical direction of the linear stepping motion. This eliminates the need for the light source module to move simultaneously in both the horizontal and vertical directions, avoiding vertical positional errors caused by multiple scanning movements and improving the accuracy of laser direct-write imaging. Secondly, both the scanning motion stage and the roller drive system are mounted on the first inclined surface of the base, ensuring that the rigid workpiece enters and exits at an inclined plane. This avoids the rigid workpiece occupying excessive horizontal space when entering and exiting in the horizontal direction, saving production space. Finally, the rigid workpiece inclined surface exposure equipment of this application embodiment uses a harmonic reducer as the transmission structure, which is small in size, lightweight, and simple in structure. Furthermore, the hysteresis of the harmonic reducer is generally within 1 arcminute, and the displacement accuracy of the rolling main bearing driven by the output flexible wheel of the harmonic reducer is high, ensuring high-precision stepping of the rigid workpiece and further improving the accuracy of laser direct-write imaging.

[0035] For ease of understanding, the exposure method of the rigid workpiece inclined plane exposure device in any possible implementation of the embodiments of this application is described below. One embodiment of the rigid workpiece exposure method in the embodiments of this application may include: the control system controls the stepper motor to drive the flexible wheel of the harmonic reducer to drive the rolling main bearing to rotate, so as to drive the rigid workpiece to step and move on the parallel plane of the first inclined plane; during the stepping movement of the rigid workpiece, after each step is completed, the light source module on the scanning motion stage is controlled to move and scan the photosensitive coating at the current position of the rigid workpiece to expose it, until the scanning exposure of all preset positions on the rigid workpiece is completed.

[0036] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rigid workpiece inclined surface exposure device, characterized in that, include: The system comprises a base, a scanning motion stage, a roller drive system, a pressing system, and a light source module. The scanning motion stage is mounted on a first inclined surface of the base, and a transverse guide rail is provided on the first inclined surface. When the scanning motion stage reciprocates along the transverse guide rail, the light source in the light source module on the scanning motion stage exposes the photosensitive coating on the rigid workpiece. The first inclined surface is not perpendicular to the horizontal direction. The roller drive system is installed on the first inclined plane and includes a fixed plate, a stepper motor, a harmonic reducer, a rolling main bearing, and a bearing housing. The fixed plate is located at both ends of the base and is respectively connected to the rigid wheel of the harmonic reducer and the bearing housing. The wave generator of the harmonic reducer is connected to the main shaft of the stepper motor, and the flexible wheel of the harmonic reducer is coaxially connected to the rolling main bearing to drive the rolling main bearing to roll and drive the rigid workpiece to move linearly along the direction perpendicular to the line where the transverse guide rail is located on the parallel plane of the first inclined plane. The pressing system is positioned on the opposite side of the photosensitive coating on the rigid workpiece and includes a pressure plate whose position can be adjusted in the vertical direction of the photosensitive coating, so as to press the rigid workpiece during linear movement to maintain its stability in the vertical direction of the photosensitive coating.

2. The rigid workpiece inclined surface exposure equipment according to claim 1, characterized in that, The light source module is a linear array or a surface array composed of multiple laser light sources.

3. The rigid workpiece inclined surface exposure equipment according to claim 1, characterized in that, The light source module is a light source that includes a DMD (Digital Micromirror Device).

4. The rigid workpiece inclined plane exposure apparatus according to any one of claims 1 to 3, characterized in that, The end of the pressure plate is provided with a flexible component.

5. The rigid workpiece inclined plane exposure apparatus according to any one of claims 1 to 3, characterized in that, The position of the pressure plate in the vertical direction of the photosensitive coating is adjusted by a cylinder.

6. The rigid workpiece inclined plane exposure apparatus according to any one of claims 1 to 3, characterized in that, The position of the pressure plate in the vertical direction of the photosensitive coating is adjusted by electromagnetic force.

7. The rigid workpiece inclined plane exposure apparatus according to any one of claims 1 to 3, characterized in that, The pressing system also includes a support beam, which is fixed to the fixed plate.

8. The rigid workpiece inclined plane exposure apparatus according to any one of claims 1 to 3, characterized in that, The pressing system contains multiple pressure plates.

9. The rigid workpiece inclined plane exposure apparatus according to any one of claims 1 to 3, characterized in that, Also includes: Two support platforms located on either side of the base are used to support the rigid workpiece in the vertical direction of the photosensitive coating.

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