A vertical screen printing exposure device control method and vertical screen printing exposure device

Abstract

This invention discloses a control method for a vertical screen printing exposure device, comprising: a co-position motor driving a first lens module and a second lens module to simultaneously occupy the initial scanning position; during exposure, a linkage motor driving the first lens module to move downward from the highest exposure point, while simultaneously driving the second lens module to move upward from the lowest exposure point; during the movement of the first and second lens modules, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station. By driving the first and second lens modules to move synchronously and in opposite directions using a linkage motor, the requirement for synchronous processing at two stations is met, and the self-weight of the downward-moving first lens module can be used to effectively reduce the load on the linkage motor during operation, thereby increasing the scanning speed and plate-making efficiency of the first and second lens modules.

Description

Technical Field

[0001] This invention relates to the field of screen printing technology, and in particular to a control method for a vertical screen exposure device and a vertical screen exposure device. Background Technology

[0002] Laser engraving utilizes the high energy density and precise controllability of lasers to expose a mesh coated with photosensitive emulsion. During exposure, the laser beam scans according to a pre-set pattern in the computer, causing a chemical reaction in the laser-irradiated areas to form permeable mesh openings. In areas not irradiated by the laser, the photosensitive emulsion remains unchanged, forming areas where ink cannot pass through. This achieves the engraving effect where ink passes through the mesh openings in the image areas, but not in the non-image areas.

[0003] Laser engraving has wide applications in screen printing, especially in applications requiring high precision and high quality. For example, in the labeling, packaging, and decoration of electronic products, laser engraving can produce intricate patterns and text, increasing the added value of the products. Furthermore, laser engraving also plays an important role in art reproduction and advertising production.

[0004] Currently, most screen exposure machines on the market using laser plate-making methods adopt a horizontal structure. Firstly, the horizontal structure results in a larger footprint, increasing production space requirements and limiting the flexible layout and efficient utilization of the equipment within a limited space. Secondly, in a horizontal structure, the screen is prone to central concavity due to gravity during exposure. This not only affects the flatness and precision of the plate but may also lead to a decline in print quality, especially under high-precision printing requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a control method for a vertical screen printing plate exposure device and a vertical screen printing plate exposure device to solve the above-mentioned technical problems.

[0006] To achieve one of the above-mentioned objectives, the present invention provides a control method for a vertical screen exposure device, the control method comprising the following steps: S10, the linkage motor drives the first lens module of the first exposure station to move upward on the linkage gantry mechanism to the highest exposure point, and simultaneously drives the second lens module of the second exposure station to move downward on the linkage gantry mechanism to the lowest exposure point; S20, the same position motor drives the linkage gantry mechanism to drive the first lens module and the second lens module to move horizontally synchronously until the first lens module and the second lens module are simultaneously at the starting scanning position. S30, the linkage motor drives the first lens module to move downward from the highest exposure point, and simultaneously drives the second lens module to move upward from the lowest exposure point; during the movement of the first lens module and the second lens module, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station.

[0007] As a further improvement of the present invention, step S10 specifically includes: The linkage motor is turned on, driving the first lead screw in the linkage gantry mechanism to rotate forward, causing the first lens module to move upward along the first lead screw to the highest exposure point; at the same time, the second lead screw is driven to rotate in the opposite direction, causing the second lens module to move downward along the second lead screw to the lowest exposure point.

[0008] As a further improvement of the present invention, step S30 specifically includes: During the movement of the first lens module and the second lens module, the opening and closing of the first direct-write lens in the first lens module is controlled by the exposure position calculated based on the exposure pattern of the first exposure station, and the opening and closing of the second direct-write lens in the second lens module is controlled by the exposure position calculated based on the exposure pattern of the second exposure station.

[0009] As a further improvement of the present invention, when the exposure pattern of the first exposure station is the same as the exposure pattern of the second exposure station, before step S30, the control method includes the step of: retrieving the exposure pattern data stored in the industrial control computer of the vertical screen exposure equipment. When the exposure pattern of the first exposure station is different from the exposure pattern of the second exposure station, before step S30, the control method includes the steps of: retrieving the first exposure pattern data for the first exposure station and the second exposure pattern data for the second exposure station stored in the industrial control computer of the vertical screen exposure equipment.

[0010] As a further improvement of the present invention, after step S30, the control method includes: S40, after the first lens module moves downward to the lowest exposure point and the second lens module moves upward to the highest exposure point, the co-position motor drives the linkage gantry mechanism to drive the first lens module and the second lens module to move horizontally in sync by one step. S50, the linkage motor drives the first lens module to move upward from the lowest exposure point, and simultaneously drives the second lens module to move downward from the highest exposure point; during the movement of the first lens module and the second lens module, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station. S60: After the first lens module moves upward to the highest exposure point and the second lens module moves downward to the lowest exposure point, the co-position motor drives the two sides of the linkage gantry mechanism to move horizontally by one step in sync. Repeat steps S30-S50 until the screens at the first exposure station and the screens at the second exposure station are both exposed.

[0011] As a further improvement of the present invention, the control method includes: During the first direct-write lens exposure, the distance between the first direct-write exposure lens and the screen at the first exposure station is adjusted based on the feedback from the first displacement sensor; during the second direct-write lens exposure, the distance between the second direct-write exposure lens and the screen at the second exposure station is adjusted based on the feedback from the second displacement sensor.

[0012] In another aspect, the present invention provides a vertical screen exposure device, including a device substrate, and further comprising: A first exposure station and a second exposure station are symmetrically arranged on both sides of the equipment substrate; The first lens module is located at the first exposure station; The second lens module is located at the second exposure station; A linkage gantry mechanism is horizontally and movably connected to both sides of the equipment base, and the first lens module and the second lens module are symmetrically connected to both sides of the linkage gantry mechanism; A linkage motor is used to drive the first lens module and the second lens module to move synchronously in opposite directions along the vertical direction; The vertical screen printing plate exposure device performs the vertical screen printing plate exposure device control method according to any one of the preceding claims.

[0013] As a further improvement of the present invention, the linkage gantry mechanism includes a first lead screw module disposed at the first exposure station and a second lead screw module disposed at the second exposure station. The first lead screw module includes a first lead screw extending in a vertical direction, and the second lead screw module includes a second lead screw extending in a vertical direction. The first lens module is connected to the first lead screw, and the second lens module is connected to the second lead screw. The linkage motor drives the first lead screw and the second lead screw to rotate synchronously, and the rotation directions of the first lead screw and the second lead screw are opposite.

[0014] As a further improvement of the present invention, the linkage gantry mechanism includes a gantry connecting plate located on the upper side of the equipment base, the linkage motor is mounted on the gantry connecting plate, and a plurality of drive gears are provided on the output shaft of the linkage motor; The linkage gantry mechanism includes a first transmission component and a second transmission component that mesh with the corresponding drive gears. The first transmission component and the second transmission component respectively drive the first lead screw to rotate in the forward direction and the second lead screw to rotate in the reverse direction.

[0015] As a further improvement of the present invention, both the first transmission component and the second transmission component are provided in multiple sets. Each set of the first transmission component includes a first driven gear disposed on the upper side of the first lead screw and a first gear belt that simultaneously cooperates with the first driven gear and the driving gear. Each set of the second transmission component includes a second driven gear disposed on the upper side of the second lead screw and a second gear belt that simultaneously cooperates with the second driven gear and the driving gear.

[0016] As a further improvement of the present invention, both the first exposure station and the second exposure station are provided with an upper slide rail assembly and a lower slide rail assembly extending in the horizontal direction, and the upper and lower sides of the first lead screw module and the second lead screw module are respectively slidably connected to the upper slide rail assembly and the lower slide rail assembly. The vertical screen printing exposure equipment includes a co-position motor that drives the first lead screw module and the second lead screw module to slide horizontally synchronously.

[0017] As a further improvement of the present invention, the linkage gantry mechanism includes a gantry connecting plate located on the upper side of the equipment base, one side of the gantry connecting plate being connected to the upper part of the first lead screw module and the other side being connected to the upper part of the second lead screw module; the linkage motor is installed on the lower side of the gantry connecting plate, the output shaft of the linkage motor is located on the upper side of the gantry connecting plate, and the equipment base is provided with a cavity for accommodating the linkage motor.

[0018] As a further improvement of the present invention, the first lens module includes a first direct-write lens, a first lens drive motor that drives the first direct-write lens to move closer to or further away from the screen at the first exposure station, and a first displacement sensor that measures the distance between the first direct-write lens and the screen at the first exposure station; the second lens module includes a second direct-write lens, a second lens drive motor that drives the second direct-write lens to move closer to or further away from the screen at the second exposure station, and a second displacement sensor that measures the distance between the second direct-write lens and the screen at the second exposure station.

[0019] The vertical screen printing exposure equipment control method provided by this invention uses a linkage motor to drive the first lens module and the second lens module to move synchronously in opposite directions. By utilizing the weight of the downward-moving first lens module, it effectively acts as a counterweight for the upward-moving second lens module, reducing the load on the linkage motor and thus increasing the scanning speed of the first and second lens modules. This invention, by using a linkage motor to drive the first and second lens modules to move synchronously in opposite directions, not only meets the requirements of simultaneous processing at two stations but also reduces the limitation on scanning speed caused by excessive weight of the lens modules, thereby improving lens scanning speed and plate-making efficiency.

[0020] The present invention also provides a vertical screen exposure device, which not only facilitates the screen loading operation for workers during the screen making process, but also avoids the problem of the screen sinking in the center due to gravity. Compared with the horizontal screen exposure device, it occupies less space, can make more efficient use of the space, and can be connected to an automatic line to achieve mass production quickly.

[0021] This invention relates to a vertical screen printing exposure device equipped with a linkage gantry mechanism and a linkage motor. A first lens module and a second lens module are symmetrically connected to both sides of the linkage gantry mechanism. The linkage motor drives the first and second lens modules to move synchronously in opposite directions, satisfying the need for simultaneous dual-station processing while reducing the limitation on scanning speed caused by the weight of the lens modules, thereby improving lens scanning speed and plate-making efficiency. The first and second lens modules of the vertical screen printing exposure device can process different exposure patterns to meet diverse user needs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of some embodiments of the neutral screen exposure equipment of the present invention; Figure 2 for Figure 1 Enlarged diagram of section AA; Figure 3 for Figure 1 Enlarged view of section BB; Figure 4 for Figure 1 The diagram shows the structure of the clamp drive assembly. Figure 5 for Figure 1 The diagram shows the structure of the linkage gantry mechanism, lens module, and slide rail assembly. Figure 6 for Figure 1 The diagram shows the structure of the linkage gantry mechanism, the first lens module, and the second lens module. Figure 7 This is a flowchart of a control method for a neutral screen exposure device according to some embodiments of the present invention. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more comprehensive description of the invention will be provided below in conjunction with specific embodiments. Preferred embodiments of the invention are given in the specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0024] The terms "optionally" and similar expressions used in this invention refer to embodiments of the invention that may provide certain beneficial effects in certain circumstances. However, other embodiments may also be optional in the same or other circumstances. Furthermore, the description of one or more optional embodiments does not imply that other embodiments are unavailable, nor is it intended to exclude other embodiments from the scope of this invention.

[0025] This invention provides a vertical screen exposure device, see reference. Figures 1 to 6 As shown, the device includes a base 1, a first exposure station 2 and a second exposure station 3 symmetrically arranged on both sides of the base 1. The first exposure station 2 and the second exposure station 3 are respectively equipped with screens to be exposed, and the screens include a mesh cloth coated with photosensitive emulsion.

[0026] The first exposure station 2 is equipped with a first lens module 4, and the second exposure station 3 is equipped with a second lens module 5. The first lens module 4 is used to expose the screen mounted at the first exposure station 2, and the second lens module 5 is used to expose the screen mounted at the second exposure station 3. This vertical screen exposure equipment of the present invention can simultaneously expose two screens without occupying more space, more than doubling the production capacity compared to traditional laser screen making equipment. Furthermore, the first lens module 4 and the second lens module 5 can process the same exposure pattern or different exposure patterns to meet diverse user needs. The present invention's vertical structure of the screen exposure equipment facilitates screen loading operations during the screen making process and avoids the problem of screen concavity due to gravity. Compared to horizontal screen exposure equipment, it occupies less space, making more efficient use of space and enabling connection to automated lines for rapid mass production.

[0027] In one embodiment, both the first exposure station 2 and the second exposure station 3 include clamping devices mounted on the equipment base 1, which respectively mount two screen printing plates on the first exposure station 2 and the second exposure station 3. Specifically, the clamping device includes an upper clamping groove 61 and a lower clamping groove 62 arranged opposite each other in the vertical direction, and both the upper clamping groove 61 and the lower clamping groove 62 extend in the horizontal direction. The clamping device also includes a clamping drive assembly that drives the upper clamping groove 61 to reciprocate in the vertical direction. By changing the height of the upper clamping groove 61, the distance between the upper clamping groove 61 and the lower clamping groove 62 can be adjusted, allowing the clamping device to adapt to screen printing plates of various sizes.

[0028] Optionally, such as Figure 4 As shown, the clamping plate drive assembly includes a clamping plate drive motor 63, which includes an output shaft. The clamping plate drive assembly also includes a clamping plate main gear 64 disposed on the output shaft of the clamping plate drive motor 63, a clamping plate driven gear shaft 65 disposed on the equipment base 1, and a clamping plate gear belt 66 that simultaneously cooperates with the clamping plate main gear 64 and the clamping plate driven gear shaft 65 and extends in the vertical direction. The upper clamping plate groove 61 is fixed to the clamping plate gear belt 66. The clamping plate drive motor 63 drives the clamping plate main gear 64 to rotate, which in turn drives the clamping plate gear belt 66 to rotate, thereby driving the upper clamping plate groove 61, which is fixed to the clamping plate gear belt 66, to move in the vertical direction, thereby adjusting the distance between the upper clamping plate groove 61 and the lower clamping plate groove 62, so as to realize the installation of screens of different specifications.

[0029] Furthermore, the clamping device can be equipped with multiple sets of clamping drive components. The upper clamping groove 61 is driven by multiple clamping gear belts 66 to move in the vertical direction at the same time. This can reduce the force on a single clamping drive component and make the upper clamping groove 61 move smoothly with balanced force.

[0030] The screen installation process is as follows: First, the upper clamping slot 61 is raised to a certain height using the clamping drive assembly, for example, to its highest point. After ensuring sufficient distance between the upper clamping slot 61 and the lower clamping slot 62 for screen installation, the screen is placed in the lower clamping slot 62. Then, the upper clamping slot 61 is slowly lowered until it clamps the screen. Optionally, the clamping device also includes an upper clamping cylinder and a lower clamping cylinder. The upper clamping cylinder is positioned between the upper clamping slot 61 and the equipment base 1, and the lower clamping cylinder is positioned between the lower clamping slot 62 and the equipment base 1. After the screen is clamped in the upper clamping slot 61, the screen is further tightened by activating the upper and lower clamping cylinders.

[0031] The vertical screen printing exposure equipment also includes a linkage gantry mechanism 7 horizontally connected to both sides of the equipment base 1. The first lens module 4 and the second lens module 5 are symmetrically connected to both sides of the linkage gantry mechanism 7. The vertical screen printing exposure equipment also includes a linkage motor 8, which simultaneously drives the first lens module 4 and the second lens module 5 to move vertically along both sides of the linkage gantry mechanism 7, and the first lens module 4 and the second lens module 5 move in opposite directions; that is, the linkage motor 8 simultaneously drives the first lens module 4 and the second lens module 5 to move synchronously in opposite directions vertically. For example, while the linkage motor 8 drives the first lens module 4 to move upwards, it also drives the second lens module 5 to move synchronously downwards. Because the linkage motor 8 drives the first lens module 4 and the second lens module 5 to move synchronously in opposite directions, the weight of the downward-moving lens module acts as a counterweight for the upward-moving lens module, effectively reducing the load on the linkage motor 8 during operation, thereby increasing the scanning speed of the lens modules. This invention uses a linkage motor 8 to drive the first lens module 4 and the second lens module 5 to move synchronously in opposite directions. This satisfies the need for synchronous processing at two workstations and reduces the limitation on scanning speed caused by the weight of the lens modules, thereby improving the lens scanning speed and plate-making efficiency.

[0032] Specifically, the linkage gantry mechanism 7 includes a first lead screw module 71 set at the first exposure station 2 and a second lead screw module 72 set at the second exposure station 3. The first lead screw module 71 includes a first lead screw 711 extending in the vertical direction, and the second lead screw module 72 includes a second lead screw extending in the vertical direction. The first lens module 4 is connected to the first lead screw 711, and the second lens module 5 is connected to the second lead screw. The linkage motor 8 drives the first lead screw 711 and the second lead screw to rotate synchronously, and the rotation directions of the first lead screw 711 and the second lead screw are opposite. When the linkage motor 8 drives the first lead screw 711 and the second lead screw to rotate synchronously in opposite directions, the first lens module 4 moves up or down on the first lead screw 711, and the second lens module 5 moves on the second lead screw in the opposite direction to the first lens module 4. It can be understood that the lengths of the first lead screw 711 and the second lead screw are set according to the scanning stroke of the first lens module 4 and the second lens module 5 in the vertical direction.

[0033] Furthermore, the first lead screw module 71 is equipped with a first upper limit switch and a first lower limit switch, and the second lead screw module 72 is equipped with a second upper limit switch and a second lower limit switch. These limit switches can be configured as photoelectric switches. The scanning stroke of the first lens module 4 is controlled by the first upper limit switch and the first lower limit switch. The scanning stroke of the second lens module 5 is controlled by the second upper limit switch and the second lower limit switch.

[0034] The linkage gantry mechanism 7 includes a gantry connecting plate 73 located on the upper side of the equipment base 1, and a linkage motor 8 mounted on the gantry connecting plate 73. Specifically, the linkage motor 8 is parallel to the scanning direction of the vertical screen exposure equipment, such as... Figure 2 and Figure 3 As shown, the scanning direction is vertical, so the linkage motor 8 is placed vertically. Multiple drive gears 81 are mounted on the output shaft of the linkage motor 8. The linkage gantry mechanism 7 includes a first transmission component and a second transmission component that mesh with the corresponding drive gears 81. The first transmission component and the second transmission component respectively drive the first lead screw 711 to rotate forward and the second lead screw to rotate in the opposite direction.

[0035] In one embodiment, both the first transmission component and the second transmission component are provided with multiple sets, such as... Figures 1 to 3 As shown, each set of first transmission components includes a first driven gear 821 disposed on the upper side of the first lead screw 711 and a first gear belt 822 that simultaneously engages with the first driven gear 821 and the drive gear 81. Each set of second transmission components includes a second driven gear 831 disposed on the upper side of the second lead screw and a second gear belt 832 that simultaneously engages with the second driven gear 831 and the drive gear 81. The drive gear 81 is rotated by the linkage motor 822, which then meshes with the drive gear 81, causing the first driven gear 821 to rotate. The first driven gear 821 then drives the first lead screw 711 to rotate, thus achieving the vertical movement of the first lens module 4. Similarly, the drive gear 81 is rotated by the linkage motor 822, which then meshes with the drive gear 81, causing the second driven gear 831 to rotate. The second driven gear 831 then drives the second lead screw to rotate, thus achieving the vertical movement of the second lens module 5. In other embodiments, the first and second transmission components can be in the form of gears, chains, etc.

[0036] Furthermore, both the first exposure station 2 and the second exposure station 3 are equipped with an upper slide rail assembly and a lower slide rail assembly extending horizontally. The first lead screw module 71 and the second lead screw module 72 are slidably connected to the upper slide rail assembly and the lower slide rail assembly on their upper and lower sides, respectively. Specifically, both the upper slide rail assembly and the lower slide rail assembly can be selected as stainless steel guide rails extending horizontally.

[0037] In one embodiment of the present invention, the first exposure station 2 is provided with a first upper slide rail assembly 91 and a first lower slide rail assembly 92 extending in a horizontal direction. The upper part of the first lead screw module 71 is slidably connected to the first upper slide rail assembly 91, and the lower part is slidably connected to the first lower slide rail assembly 92. The second exposure station 3 is provided with a second upper slide rail assembly 101 and a second lower slide rail assembly 102 extending in a horizontal direction. The upper part of the second lead screw module 72 is slidably connected to the second upper slide rail assembly 101, and the lower part is slidably connected to the second lower slide rail assembly 102.

[0038] Furthermore, the vertical screen printing exposure equipment includes a synchronous motor that drives the first lead screw module 71 and the second lead screw module 72 to slide horizontally synchronously. Specifically, the synchronous motor can be a permanent magnet synchronous motor. By driving the first lead screw module 71 and the second lead screw module 72 to slide horizontally synchronously along the upper slide rail assembly and the lower slide rail assembly, the synchronous motor can adjust the horizontal position of the first lens module 4 and the second lens module 5. After the first lens module 4 and the second lens module 5 have completed one scan stroke, the synchronous motor enables the first lens module 4 and the second lens module 5 to move synchronously by one step in the horizontal direction to expose the next scan position.

[0039] Furthermore, one side of the gantry connecting plate 73 is connected to the upper part of the first lead screw module 71, and the other side is connected to the upper part of the second lead screw module 72; while the co-position motor drives the first lead screw module 71 and the second lead screw module 72 to move horizontally, the gantry connecting plate 73 drives the linkage motor 8 to move synchronously with the first lead screw module 71 and the second lead screw module 72.

[0040] In one embodiment of the present invention, the linkage motor 8 is installed on the lower side of the gantry connecting plate 73, and the equipment base 1 is provided with a cavity to accommodate the linkage motor 8, which saves the space occupied by the linkage motor 8 and makes the vertical screen exposure equipment compact. The output shaft of the linkage motor 8 is located on the upper side of the gantry connecting plate 73, the drive gear 81 is located on the upper side of the gantry connecting plate 73, and the first transmission component and the second transmission component are also located on the upper side of the equipment base 1, which effectively utilizes the vertical space and facilitates the later maintenance and upkeep of the drive gear 81, the first transmission component and the second transmission component.

[0041] In this invention, the first lens module 4 includes a first direct-write lens, which is a lens equipped with a digital micromirror device (DMD). It employs a DMD combined with a laser for direct-write exposure to create a screen printing plate, enabling more efficient and precise drawing of the desired pattern and reducing unnecessary manual operations. The first lens module 4 also includes a first lens drive motor that drives the first direct-write lens to move closer to or further away from the screen at the first exposure station 2. Furthermore, it includes a first displacement sensor located on one side of the first direct-write lens. The first displacement sensor measures the distance between the first direct-write lens and the screen at the first exposure station 2. Based on the measurement result, the first lens drive motor drives the first direct-write lens to move closer to or further away from the screen at the first exposure station 2, ensuring that the first direct-write lens is in real-time focused on the screen to be exposed, thus guaranteeing the quality of the exposed pattern.

[0042] The second lens module 5 includes a second direct-write lens, which is a lens equipped with a digital micromirror device (DMD). It uses a DMD combined with a laser for direct-write exposure to create the screen printing plate, enabling more efficient and precise drawing of the desired pattern and reducing unnecessary manual operations. The second lens module 5 also includes a second lens drive motor to move the second direct-write lens closer to or further away from the screen at the second exposure station 3, and a second displacement sensor to measure the distance between the second direct-write lens and the screen at the second exposure station 3. The second lens module 5 is configured in the same way as the first lens module 4, and will not be described further here.

[0043] In some embodiments of the present invention, the vertical screen printing plate exposure device further includes a device switch and a device display mounted on the device base 1. Specifically, the device switch and device display are located on the side of the device base 1, which saves space and facilitates user operation of the device. Optionally, the vertical screen printing plate exposure device also includes a warning light to promptly alert the user when a problem occurs with the device.

[0044] This invention also includes a control method for the aforementioned vertical screen exposure equipment. In one specific embodiment, see [reference needed]. Figure 7 As shown, the control method for a vertical screen exposure device includes the following steps: S10, the linkage motor drives the first lens module of the first exposure station to move upward on the linkage gantry mechanism to the highest exposure point, and simultaneously drives the second lens module of the second exposure station to move downward on the linkage gantry mechanism to the lowest exposure point; The initial position of the first lens module is when it is at its highest exposure point, and the initial position of the second lens module is when it is at its lowest exposure point. Since the first lens module and the second lens module have the same structure in this invention, their initial positions can be interchanged.

[0045] Specifically, step S10 includes: turning on the linkage motor to drive the first lead screw in the linkage gantry mechanism to rotate forward, so that the first lens module moves upward along the first lead screw to the highest exposure point; at the same time, synchronously driving the second lead screw to rotate in the reverse direction, so that the second lens module moves downward along the second lead screw to the lowest exposure point.

[0046] S20, the same position motor drives the linkage gantry mechanism to drive the first lens module and the second lens module to move horizontally synchronously until the first lens module and the second lens module are simultaneously at the starting scanning position; In other embodiments of the present invention, step S20 may be performed first, followed by step S10.

[0047] S30, the linkage motor drives the first lens module to move downward from the highest exposure point, and simultaneously drives the second lens module to move upward from the lowest exposure point; during the movement of the first lens module and the second lens module, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station.

[0048] Specifically, step S30 includes: during the movement of the first lens module and the second lens module, controlling the opening and closing of the first direct-write lens in the first lens module based on the exposure position calculated according to the exposure pattern of the first exposure station, and controlling the opening and closing of the second direct-write lens in the second lens module based on the exposure position calculated according to the exposure pattern of the second exposure station.

[0049] Because the linkage motor drives the first and second lens modules to move synchronously and in opposite directions, the weight of the downward-moving first lens module acts as a counterweight for the upward-moving second lens module, effectively reducing the load on the linkage motor and thus increasing the scanning speed of the first and second lens modules. This invention, by using a linkage motor to drive the first and second lens modules to move synchronously and in opposite directions, not only meets the requirements of simultaneous processing at two stations but also reduces the limitation on scanning speed caused by excessive weight of the lens modules, thereby improving lens scanning speed and plate-making efficiency.

[0050] In this invention, the exposure pattern of the first exposure station and the exposure pattern of the second exposure station can be the same or different. When the exposure pattern of the first exposure station and the exposure pattern of the second exposure station are the same, before step S30, the control method includes step S05: retrieving the exposure pattern data stored in the industrial control computer of the vertical screen exposure equipment.

[0051] When the exposure pattern of the first exposure station is different from the exposure pattern of the second exposure station, before step S30, the control method includes step S05': retrieving the first exposure pattern data for the first exposure station and the second exposure pattern data for the second exposure station stored in the industrial control computer of the vertical screen exposure equipment.

[0052] Steps S05 and S05' can be set after step S20 or before step S10.

[0053] In this invention, after step S30, the control method for the vertical screen exposure equipment includes: S40, after the first lens module moves downward to the lowest exposure point and the second lens module moves upward to the highest exposure point, the co-position motor drives the linkage gantry mechanism to drive the first lens module and the second lens module to move horizontally in sync by one step. After the first lens module and the second lens module have completed one scanning stroke, the present invention drives the first lens module and the second lens module to move synchronously in the horizontal direction by one step through the co-position motor driven linkage gantry mechanism to perform exposure at the next scanning position.

[0054] S50, the linkage motor drives the first lens module to move upward from the lowest exposure point, and simultaneously drives the second lens module to move downward from the highest exposure point; during the movement of the first lens module and the second lens module, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station. S60: After the first lens module moves upward to the highest exposure point and the second lens module moves downward to the lowest exposure point, the co-position motor drives the linkage gantry mechanism to move the first lens module and the second lens module horizontally in sync by one step. Repeat steps S30-S50 until the screens at the first exposure station and the screens at the second exposure station are both exposed.

[0055] In step S30 of this invention, the screen at the first exposure station is exposed in the forward direction, and the screen at the second exposure station is exposed in the reverse direction. Then, in step S40, the first lens module and the second lens module are moved horizontally synchronously by one step. In step S50, the screen at the first exposure station is exposed in the reverse direction, and the screen at the second exposure station is exposed in the forward direction. Then, in step S60, the first lens module and the second lens module are moved horizontally synchronously by one step for exposure at the next scanning position. Repeating steps S30-S50 completes the exposure pattern of the screen at the first exposure station and the screen at the second exposure station.

[0056] Preferably, when the exposure pattern at the first exposure station is different from the exposure pattern at the second exposure station, the first direct-write lens can be turned off when the exposure pattern at the first exposure station is completed. When the second lens module moves and the second direct-write lens is exposed, the first lens module and the second lens module only need to move in opposite directions synchronously, which will not increase energy consumption. On the contrary, the energy consumption of the linkage motor will be saved due to the counterweight of the first lens module.

[0057] In one specific embodiment of the present invention, the control method for a vertical screen exposure device includes: During the first direct-write lens exposure, the distance between the first direct-write exposure lens and the screen at the first exposure station is adjusted based on the feedback from the first displacement sensor; during the second direct-write lens exposure, the distance between the second direct-write exposure lens and the screen at the second exposure station is adjusted based on the feedback from the second displacement sensor.

[0058] A first displacement sensor measures the distance between the first direct-write lens and the screen at the first exposure station. Based on the measurement result, the first lens drive motor moves the first direct-write lens closer to or further away from the screen at the first exposure station, ensuring real-time focusing of the first direct-write lens on the screen to be exposed and guaranteeing the quality of the exposed image. Similarly, a second lens drive motor, based on the measurement result of the second displacement sensor, moves the second direct-write lens closer to or further away from the screen at the second exposure station, ensuring real-time focusing of the second direct-write lens on the screen to be exposed and guaranteeing the quality of the exposed image.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A control method for a vertical screen exposure device, characterized in that, The control method includes the following steps: S10, the linkage motor drives the first lens module of the first exposure station to move upward on the linkage gantry mechanism to the highest exposure point, and simultaneously drives the second lens module of the second exposure station to move downward on the linkage gantry mechanism to the lowest exposure point; S20, the same position motor drives the linkage gantry mechanism to drive the first lens module and the second lens module to move horizontally synchronously until the first lens module and the second lens module are simultaneously at the starting scanning position. S30, the linkage motor drives the first lens module to move downward from the highest exposure point, and simultaneously drives the second lens module to move upward from the lowest exposure point; During the movement of the first lens module and the second lens module, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station.

2. The control method for the vertical screen exposure equipment according to claim 1, characterized in that, Step S10 specifically includes: The linkage motor is turned on, driving the first lead screw in the linkage gantry mechanism to rotate forward, causing the first lens module to move upward along the first lead screw to the highest exposure point; at the same time, the second lead screw is driven to rotate in the opposite direction, causing the second lens module to move downward along the second lead screw to the lowest exposure point.

3. The control method for the vertical screen exposure equipment according to claim 1, characterized in that, The S30 steps specifically include: During the movement of the first lens module and the second lens module, the opening and closing of the first direct-write lens in the first lens module is controlled by the exposure position calculated based on the exposure pattern of the first exposure station, and the opening and closing of the second direct-write lens in the second lens module is controlled by the exposure position calculated based on the exposure pattern of the second exposure station.

4. The control method for the vertical screen exposure equipment according to claim 1, characterized in that, When the exposure pattern of the first exposure station is the same as the exposure pattern of the second exposure station, before step S30, the control method includes the step of: retrieving the exposure pattern data stored in the industrial control computer of the vertical screen exposure equipment. When the exposure pattern of the first exposure station is different from the exposure pattern of the second exposure station, before step S30, the control method includes the steps of: retrieving the first exposure pattern data for the first exposure station and the second exposure pattern data for the second exposure station stored in the industrial control computer of the vertical screen exposure equipment.

5. The control method for a vertical screen exposure device according to claim 1, characterized in that, After step S30, the control method includes: S40, after the first lens module moves downward to the lowest exposure point and the second lens module moves upward to the highest exposure point, the co-position motor drives the linkage gantry mechanism to drive the first lens module and the second lens module to move horizontally in sync by one step. S50, the linkage motor drives the first lens module to move upward from the lowest exposure point, and simultaneously drives the second lens module to move downward from the highest exposure point; during the movement of the first lens module and the second lens module, the first lens module exposes the screen at the first exposure station according to the exposure pattern of the first exposure station, and the second lens module exposes the screen at the second exposure station according to the exposure pattern of the second exposure station. S60: After the first lens module moves upward to the highest exposure point and the second lens module moves downward to the lowest exposure point, the co-position motor drives the two sides of the linkage gantry mechanism to move horizontally by one step in sync. Repeat steps S30-S50 until the screens at the first exposure station and the screens at the second exposure station are both exposed.

6. The control method for the vertical screen exposure equipment according to claim 3, characterized in that, The control method includes: During the first direct-write lens exposure, the distance between the first direct-write exposure lens and the screen at the first exposure station is adjusted based on the feedback from the first displacement sensor; during the second direct-write lens exposure, the distance between the second direct-write exposure lens and the screen at the second exposure station is adjusted based on the feedback from the second displacement sensor.

7. A vertical screen exposure device, comprising a device substrate, characterized in that, Also includes: A first exposure station and a second exposure station are symmetrically arranged on both sides of the equipment substrate; The first lens module is located at the first exposure station; The second lens module is located at the second exposure station; A linkage gantry mechanism is horizontally and movably connected to both sides of the equipment base, and the first lens module and the second lens module are symmetrically connected to both sides of the linkage gantry mechanism; A linkage motor is used to drive the first lens module and the second lens module to move synchronously in opposite directions along the vertical direction; The vertical screen printing plate exposure device performs the vertical screen printing plate exposure device control method according to any one of claims 1-6.

8. The vertical screen exposure device according to claim 7, characterized in that, The linkage gantry mechanism includes a first lead screw module disposed at the first exposure station and a second lead screw module disposed at the second exposure station. The first lead screw module includes a first lead screw extending in a vertical direction, and the second lead screw module includes a second lead screw extending in a vertical direction. The first lens module is connected to the first lead screw, and the second lens module is connected to the second lead screw. The linkage motor drives the first lead screw and the second lead screw to rotate synchronously, and the rotation directions of the first lead screw and the second lead screw are opposite.

9. The vertical screen exposure device according to claim 8, characterized in that, The linkage gantry mechanism includes a gantry connecting plate located on the upper side of the equipment base, the linkage motor is mounted on the gantry connecting plate, and multiple drive gears are provided on the output shaft of the linkage motor; The linkage gantry mechanism includes a first transmission component and a second transmission component that mesh with the corresponding drive gears. The first transmission component and the second transmission component respectively drive the first lead screw to rotate in the forward direction and the second lead screw to rotate in the reverse direction.

10. The vertical screen exposure device according to claim 9, characterized in that, Both the first transmission component and the second transmission component are provided in multiple sets. Each set of the first transmission component includes a first driven gear disposed on the upper side of the first lead screw and a first gear belt that simultaneously cooperates with the first driven gear and the drive gear. Each set of the second transmission component includes a second driven gear disposed on the upper side of the second lead screw and a second gear belt that simultaneously cooperates with the second driven gear and the drive gear.

11. The vertical screen exposure apparatus according to claim 7, characterized in that, Both the first exposure station and the second exposure station are provided with an upper slide rail assembly and a lower slide rail assembly extending in the horizontal direction. The upper and lower sides of the first lead screw module and the second lead screw module are respectively slidably connected to the upper slide rail assembly and the lower slide rail assembly. The vertical screen printing exposure equipment includes a co-position motor that drives the first lead screw module and the second lead screw module to slide horizontally synchronously.

12. The vertical screen exposure device according to claim 11, characterized in that, The linkage gantry mechanism includes a gantry connecting plate located on the upper side of the equipment base. One side of the gantry connecting plate is connected to the upper part of the first lead screw module, and the other side is connected to the upper part of the second lead screw module. The linkage motor is installed on the lower side of the gantry connecting plate, and the output shaft of the linkage motor is located on the upper side of the gantry connecting plate. The equipment base is provided with a cavity for accommodating the linkage motor.

13. The vertical screen exposure device according to claim 7, characterized in that, The first lens module includes a first direct-write lens, a first lens drive motor that drives the first direct-write lens to move closer to or further away from the screen at the first exposure station, and a first displacement sensor that measures the distance between the first direct-write lens and the screen at the first exposure station; the second lens module includes a second direct-write lens, a second lens drive motor that drives the second direct-write lens to move closer to or further away from the screen at the second exposure station, and a second displacement sensor that measures the distance between the second direct-write lens and the screen at the second exposure station.

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