Oversized RTR exposure device

Abstract

The utility model discloses an oversized RTR exposure device which comprises a cabinet, a fan filter assembly is arranged on the cabinet, and an RTR exposure machine is arranged in the cabinet; the RTR exposure machine comprises a rack, and an unwinding device, a first deviation rectifying device, an exposure conveying wheel, an exposure device, a second deviation rectifying device and a winding device are arranged on the rack; according to the utility model, the first deviation rectifying device and the second deviation rectifying device are used for detecting whether the tension of the photosensitive film is not uniform, and deviation rectifying is carried out if the tension is detected, so that the photosensitive film on the exposure delivery wheel is smooth. The exposure device is used for exposing the passing photosensitive film; and the winding device is used for winding and storing the processed photosensitive film. The device can be adapted to the processing operation of a large-size photosensitive film roll, and deviation correction is respectively carried out on the working procedures before and after exposure of the photosensitive film, so that the processing and rolling of the photosensitive film are more regular, the processing effect is good, and the automatic operation is realized in the whole process.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible printed circuit board production, and more specifically, to a super-large-size RTR exposure device. Background Art

[0002] The Metal Mesh metal mesh super-large-size exposure machine uses cold light source LED technology plus a film optical negative to map the pattern onto the photosensitive film, and realizes the desired pattern through development, etching, and film stripping. The large-size exposure equipment basically performs exposure operations in a single piece, with low efficiency, and requires frequent manual handling of the material roll. The RTR (ROLL TO ROLL) process can effectively reduce the problem of press-folding damage of products during the production process and greatly improve production efficiency.

[0003] Due to the width limitation of RTR, the currently relatively mature RTR exposure machine can expose a width of 500 mm, which cannot adapt to the preparation process of super-large-size metal meshes, and the current RTR exposure machines are expensive, resulting in high production costs of products. Summary of the Utility Model

[0004] The utility model provides a super-large-size RTR exposure device to solve the problems raised in the above background art. To achieve the above object, the utility model provides the following technical solution: A super-large-size RTR exposure device includes a cabinet, on which a fan filter assembly is provided, and a RTR exposure machine is provided inside;

[0005] The RTR exposure machine includes a frame, on which a unwinding device, a first deviation rectifying device, an exposure conveyor wheel, an exposure device, a second deviation rectifying device, and a winding device are provided;

[0006] The unwinding device includes a feed roll for installing the photosensitive film; the winding device includes a take-up roll for receiving the photosensitive film; the unwinding device, the first deviation rectifying device, the exposure conveyor wheel, and the second deviation rectifying device are arranged in sequence along the conveying direction of the photosensitive film; the first deviation rectifying device is used to adjust the position of the photosensitive film between the winding device and the exposure conveyor wheel, and the second deviation rectifying device is used to adjust the position of the photosensitive film between the exposure conveyor wheel and the winding device; the exposure device is arranged below the exposure conveyor wheel and exposes the photosensitive film passing between the exposure device and the exposure conveyor wheel.

[0007] Preferably, the exposure device includes an exposure machine table, a film platform, and an exposure light source; a light source outlet is provided on the exposure machine table, and the exposure light source is arranged directly below the light source outlet; the film platform is movably arranged inside the exposure machine table and moves together with the photosensitive film.

[0008] Preferably, the film platform includes a translation device and a film device; the translation device is used to drive the film device to translate forward or backward; the film device includes a shading plate, an upper optical glass, a film base and a lower optical glass arranged in sequence from top to bottom; the shading plate is provided with a light-transmitting area that matches the film base; the upper optical glass presses the film base and makes it flat; the thickness of the lower optical glass is greater than that of the upper optical glass, and its bottom is connected to the translation device.

[0009] Preferably, the translation device includes a front workbench, a rear workbench, a stage and a driving mechanism; the exposure light source is arranged between the front workbench and the rear workbench, the front workbench is provided with a front track, the rear workbench is provided with a rear track, and the stage is slidably connected to the front track and the rear track; the top of the stage is connected to the bottom of the lower optical glass; the driving mechanism is arranged in the exposure machine and connected to the stage.

[0010] Preferably, the worktable includes a screw-nut mechanism; the screw-nut mechanism includes a servo motor, a reducer, a screw and a nut seat, the servo motor is transmission-connected to the screw through the reducer, the nut seat is installed on the screw and connected to the worktable.

[0011] Preferably, the axis line of the unwinding device and the axis line of the winding device are in the same vertical plane; the axis line of the unwinding device and the axis line of the exposure transmission wheel are in the same horizontal plane; the first deflection correcting device is arranged directly below the second deflection correcting device, and the distance between the first deflection correcting device and the unwinding device is smaller than the distance between the first deflection correcting device and the exposure transmission wheel.

[0012] Preferably, the first correcting device and the second correcting device are both EPC correcting devices.

[0013] Preferably, it also includes a flatness detection device arranged between the first deflection correction device and the exposure transfer wheel; the flatness detection device includes a bracket and a visual sensor; the bracket is an adjustable bracket, which is connected to the frame; the visual sensor is arranged on the bracket, and its detection port is set toward the photosensitive film.

[0014] Preferably, an alarm device is also included, and the alarm device is connected to the first deviation-correcting device and the second deviation-correcting device respectively; the alarm includes but is not limited to a voice alarm, a buzzer alarm and a flash alarm.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model uses an unwinding device and a winding device to complete the automatic transmission action of the photosensitive film, replacing the traditional manual handling. When the winding device and the unwinding device rotate simultaneously, the first deviation rectifying device and the second deviation rectifying device will detect whether there is uneven tension in the photosensitive film. If detected, deviation rectification will be carried out to ensure that the photosensitive film on the exposure transmission wheel is flat. The exposure device exposes the passing photosensitive film, and the winding device winds and stores the processed photosensitive film. The unwinding device and the winding device of the present utility model are applicable to film materials of various sizes and can adapt to the processing operations of large-size photosensitive film rolls. The present utility model conducts deviation rectification respectively in the processes before and after the exposure of the photosensitive film, making the processing and winding of the photosensitive film more regular and having a good processing effect. The entire process realizes automated operation. In addition, the design of the present utility model is reasonable and the structure is simple. While ensuring the stability of the photosensitive film exposure operation process, it improves the working efficiency, reduces the production cost, and is also easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of an extra-large-size RTR exposure device according to an embodiment of the present utility model;

[0017] Figure 2 is a structural diagram of an RTR exposure machine of an extra-large-size RTR exposure device according to an embodiment of the present utility model;

[0018] Figure 3 is a schematic diagram of the working state of a film platform of an extra-large-size RTR exposure device according to an embodiment of the present utility model;

[0019] Figure 4 is Figure 3 an enlarged view of part A in

[0020] In Figures 1 to 4 the corresponding relationship between the names of each component and the reference numerals of the drawings is as follows:

[0021] 1 - cabinet, 2 - fan filter assembly, 3 - frame, 4 - unwinding device, 5 - first deviation rectifying device, 6 - exposure transmission wheel, 7 - exposure device, 71 - exposure machine table, 72 - film platform, 721 - light-shielding plate, 722 - upper optical glass, 723 - film negative, 724 - lower optical glass, 725 - front workbench, 726 - rear workbench, 727 - carrier table, 73 - exposure light source, 8 - second deviation rectifying device, 9 - winding device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The attached drawings are only for reference and illustration, and are not used to limit the embodiments of the present disclosure. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Please refer to Figures 1 to 4 , the present utility model provides an extra-large-size RTR exposure device, including a cabinet 1, on which a fan filter assembly 2 is provided, and an RTR exposure machine is arranged inside;

[0026] The RTR exposure machine includes a frame 3, on which a unwinding device 4, a first deviation rectifying device 5, an exposure conveyor wheel 6, an exposure device 7, a second deviation rectifying device 8 and a winding device 9 are arranged;

[0027] The unwinding device 4 includes a unwinding roll for installing a photosensitive film; the winding device 9 includes a winding roll for receiving the photosensitive film; the unwinding device 4, the first deviation rectifying device 5, the exposure conveyor wheel 6, and the second deviation rectifying device 8 are arranged in sequence along the conveying direction of the photosensitive film; the first deviation rectifying device 5 is used to adjust the position of the photosensitive film between the winding device 9 and the exposure conveyor wheel 6, and the second deviation rectifying device 8 is used to adjust the position of the photosensitive film between the exposure conveyor wheel 6 and the winding device 9; the exposure device 7 is arranged below the exposure conveyor wheel 6 and exposes the photosensitive film passing between the exposure device 7 and the exposure conveyor wheel 6.

[0028] In an embodiment of the present utility model, an RTR exposure machine, i.e., a roll-to-roll exposure machine, mainly consists of two major parts: the transfer of the photosensitive film and exposure. Among them, the transfer part of the photosensitive film is realized by the unwinding device 4 and the winding device 9, and the exposure part is completed by the exposure device 7. During the transmission process, the photosensitive film passes through the exposure transfer wheel 6, and the lowermost end of the exposure transfer wheel 6 faces the exposure device 7. When the photosensitive film passes through the exposure transfer wheel 6 and the exposure device 7, the exposure device 7 acts on the photosensitive film to complete the exposure operation. After exposure, the photosensitive film leaves the exposure transfer wheel 6 and enters the winding device 9 for winding.

[0029] In order to ensure the stability and flatness of the photosensitive film during the transmission process and improve the exposure accuracy, in this embodiment, deviation correction devices are respectively arranged in the processes before and after the exposure of the photosensitive film. Among them, the first deviation correction device 5 real-time monitors the position of the photosensitive film between the winding device 9 and the exposure transfer wheel 6. Once it is found that the photosensitive film has a position deviation, it will automatically correct the position of the photosensitive film to keep it flat during transportation; the second deviation correction device 8 is used to adjust the position of the photosensitive film between the exposure transfer wheel 6 and the winding device 9.

[0030] The working process of this embodiment is as follows:

[0031] The photosensitive film is sent out from the unwinding device 4, passes through the first deviation correction device 5 for position adjustment, and then enters the exposure transfer wheel 6. The exposure device 7 performs an exposure operation on the photosensitive film located between the exposure transfer wheel 6 and the exposure device 7; after exposure, the photosensitive film enters the second deviation correction device 8 and finally enters the winding device 9 for storage.

[0032] Preferably, the exposure device 7 includes an exposure machine table 71, a film platform 72, and an exposure light source 73; a light source outlet is provided on the exposure machine table 71, and the exposure light source 73 is arranged directly below the light source outlet; the film platform 72 is movably arranged in the exposure machine table 71 and moves together with the photosensitive film. In this embodiment, the film platform 72 is a movable structure and can move horizontally along with the movement of the photosensitive film to meet the exposure requirements of the photosensitive film. Please refer to Figure 1 , Figure 1 In, the film platform 72 is in the initial position, and an imageable negative film is carried on the film platform 72. The negative film moves along with it. When the exposure light source 73 acts on the photosensitive film through the negative film, a specific pattern can be formed on the photosensitive film for subsequent processing operations. Please refer to Figure 3 , at this time, the film platform 72 has moved to the most forward position, and the exposure process is completed. The film platform 72 starts to retreat to return to the initial position.

[0033] The working process of this embodiment is as follows: The film platform 72 moves along with the photosensitive film, and the film platform 72 moves forward at the same speed for exposure. After the exposure is completed, the film platform 72 moves backward to reset, the winding device 9 and the unwinding device 4 stop rotating. After the reset is completed, the previous action is repeated.

[0034] Preferably, the film platform 72 includes a translation device and a film device; the translation device is used to drive the film device to translate forward or backward; the film device includes a light-shielding plate 721, an upper optical glass 722, a film negative 723, and a lower optical glass 724 arranged in sequence from top to bottom; the light-shielding plate 721 is provided with a light-transmitting area that matches the film negative 723; the upper optical glass 722 presses the film negative 723 to make it flat; the thickness of the lower optical glass 724 is greater than that of the upper optical glass 722, and its bottom is connected to the translation device.

[0035] In this embodiment, the translation device drives the film device to horizontally translate for exposure or reset. The film device is composed of a light-shielding plate 721, an upper optical glass 722, a film negative 723, and a lower optical glass 724. The function of the upper optical glass 722 is to press the film negative 723 to keep the film negative 723 flat. The lower optical glass 724 serves as a support platform to provide support for the film negative 723. The film negative 723 can be replaced with different models according to production needs.

[0036] Preferably, the translation device includes a front workbench 725, a rear workbench 726, a carrier 727, and a driving mechanism; the exposure light source 73 is arranged between the front workbench 725 and the rear workbench 726. The front workbench 725 is provided with a front track, the rear workbench 726 is provided with a rear track, and the carrier 727 is slidably connected to the front track and the rear track; the top of the carrier 727 is connected to the bottom of the lower optical glass 724; the driving mechanism is arranged in the exposure machine table 71 and is connected to the carrier 727. In this embodiment, both ends of the carrier 727 are respectively connected to the front workbench 725 and the rear workbench 726, and the exposure light source 73 is arranged between the front workbench 725 and the rear workbench 726, so that the irradiation range of the exposure light source 73 is always within the coverage range of the carrier 727. During operation, the carrier 727 moves forward, and the exposure light source 73 irradiates different positions of the film negative 723, thereby forming different patterns on the photosensitive film. After the exposure work is completed, the carrier 727 drives the film device to move backward for reset.

[0037] Preferably, the stage 727 includes a screw-nut mechanism; the screw-nut mechanism includes a servo motor, a reducer, a screw and a nut seat, the servo motor is connected to the screw through the reducer, the nut seat is mounted on the screw and connected to the stage 727. In order to provide the accuracy of the film device movement, the present embodiment uses a screw-nut mechanism to drive the stage 727, the servo motor drives the screw to rotate, and the screw acts on the nut seat to drive the stage 727.

[0038] Furthermore, two sets of screw-nut mechanisms can be provided, and the two sets of screw-nut mechanisms act on both sides of the stage 727 respectively, so as to better avoid the exposure light source 73, make the vibration on both sides more balanced, and reduce unnecessary vibration.

[0039] Preferably, the axis line of the unwinding device 4 and the axis line of the winding device 9 are in the same vertical plane; the axis line of the unwinding device 4 and the axis line of the exposure transmission wheel 6 are in the same horizontal plane; the first deflection correcting device 5 is arranged directly below the second deflection correcting device 8, and the distance between the first deflection correcting device 5 and the unwinding device 4 is smaller than the distance between the first deflection correcting device 5 and the exposure transmission wheel 6.

[0040] Preferably, the first deflection correction device 5 and the second deflection correction device 8 are both EPC deflection correction devices. In this embodiment, when the winding device 9 rotates, the unwinding device 4 also rotates at the same time, and the EPC deflection correction device detects whether the photosensitive film has uneven tension. If detected, the deflection correction is performed to ensure that the film material on the exposure transmission wheel 6 is flat.

[0041] Preferably, it also includes a flatness detection device disposed between the first deviation correction device 5 and the exposure transmission wheel 6; the flatness detection device includes a bracket and a visual sensor; the bracket is an adjustable bracket, which is connected to the frame 3; the visual sensor is disposed on the bracket, and its detection port is disposed toward the photosensitive film. In order to improve the exposure quality of the photosensitive film, the present embodiment is provided with a flatness monitoring device to monitor the surface flatness of the photosensitive film, and the surface of the photosensitive film is photographed by a visual sensor, and the passing photosensitive film is scanned in real time and at high speed, and a high-resolution image is formed, and then the data is processed in real time based on the principle of machine vision technology, surface defects are captured, and alarm, statistics, quality analysis and other processing are realized.

[0042] Preferably, an alarm device is further included, and the alarm device is respectively connected to the first deviation rectifying device 5 and the second deviation rectifying device 8; the alarm includes but is not limited to a voice alarm, a buzzer alarm, and a flash alarm. By providing the alarm device, when the deviation amplitude of the photosensitive film is too large and the first deviation rectifying device 5 or the second deviation rectifying device 8 cannot adjust and reset the photosensitive film, a reminder can be sent in time through the alarm device so that the maintenance personnel can maintain the equipment in time.

[0043] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model uses a pay-off device and a rewind device to complete the automatic transmission action of the photosensitive film, replacing the traditional manual handling; when the rewind device and the pay-off device rotate simultaneously, the first deviation rectifying device and the second deviation rectifying device will detect whether there is uneven tension in the photosensitive film, and if detected, deviation rectification will be performed to ensure that the photosensitive film on the exposure transmission wheel is flat. The exposure device exposes the passing photosensitive film, and the rewind device winds and stores the processed photosensitive film. The pay-off device and the rewind device of the present utility model are applicable to film materials of various sizes and can adapt to the processing operations of large-size photosensitive film rolls; the present utility model performs deviation rectification respectively in the processes before and after the exposure of the photosensitive film, making the processing and winding of the photosensitive film more regular and the processing effect better, and realizing automatic operation throughout the process. In addition, the design of the present utility model is reasonable, the structure is simple, while ensuring the stability of the photosensitive film exposure operation process, improving its working efficiency, reducing the production cost, and also being easy to promote and use.

[0044] The embodiments of the present utility model are given for the purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. An extra-large-size RTR exposure device, characterized in that It comprises a cabinet (1), on which a fan filter assembly (2) is provided, and an RTR exposure machine is provided inside; The RTR exposure machine comprises a frame (3), on which are provided an unwinding device (4), a first deflection correcting device (5), an exposure transmission wheel (6), an exposure device (7), a second deflection correcting device (8) and a rewinding device (9); The unwinding device includes a unwinding reel, which is used to install the photosensitive film; the winding device includes a receiving reel, which is used to receive the photosensitive film; the unwinding device, the first deflection correcting device, the exposure transmission wheel, and the second deflection correcting device are arranged in sequence along the conveying direction of the photosensitive film; the first deflection correcting device is used to adjust the position of the photosensitive film between the winding device and the exposure transmission wheel, and the second deflection correcting device is used to adjust the position of the photosensitive film between the exposure transmission wheel and the winding device; the exposure device is arranged below the exposure transmission wheel, and exposes the photosensitive film passing between the exposure device and the exposure transmission wheel.

2. The extra-large-size RTR exposure apparatus according to claim 1, wherein The exposure device comprises an exposure machine (71), a film platform (72) and an exposure light source (73); the exposure machine is provided with a light source outlet, and the exposure light source is arranged directly below the light source outlet; the film platform is movably arranged in the exposure machine and moves along with the photosensitive film.

3. The extra-large size RTR exposure apparatus according to claim 2, wherein The film platform comprises a translation device and a film device; the translation device is used to drive the film device to translate forward or backward; the film device comprises a shading plate (721), an upper optical glass (722), a film base (723) and a lower optical glass (724) arranged in sequence from top to bottom; the shading plate is provided with a light-transmitting area that matches the film base; the upper optical glass presses the film base and makes it flat; the thickness of the lower optical glass is greater than that of the upper optical glass, and its bottom is connected to the translation device.

4. The extra-large size RTR exposure apparatus according to claim 3, wherein The translation device includes a front workbench (725), a rear workbench (726), a stage (727) and a driving mechanism; the exposure light source is arranged between the front workbench and the rear workbench, the front workbench is provided with a front track, the rear workbench is provided with a rear track, and the stage can be slidably connected to the front track and the rear track; the top of the stage is connected to the bottom of the lower optical glass; the driving mechanism is arranged in the exposure machine and connected to the stage.

5. The ultra-large-size RTR exposure apparatus according to claim 4, wherein The loading platform includes a screw-nut mechanism; the screw-nut mechanism includes a servo motor, a reducer, a screw and a nut seat, the servo motor is transmission-connected to the screw through the reducer, the nut seat is installed on the screw and connected to the loading platform.

6. The ultra-large-size RTR exposure apparatus according to claim 1, wherein The axis line of the unwinding device and the axis line of the winding device are in the same vertical plane; the axis line of the unwinding device and the axis line of the exposure transmission wheel are in the same horizontal plane; the first deviation correcting device is arranged directly below the second deviation correcting device, and the distance between the first deviation correcting device and the unwinding device is smaller than the distance between the first deviation correcting device and the exposure transmission wheel.

7. The extra-large size RTR exposure apparatus according to claim 1, wherein Both the first deviation rectifying device and the second deviation rectifying device are EPC deviation rectifying devices.

8. The ultra-large size RTR exposure device according to claim 1, wherein, It further includes a flatness detection device arranged between the first deviation rectifying device and the exposure transfer wheel; the flatness detection device includes a bracket and a vision sensor; the bracket is an adjustable bracket and is connected to the frame; the vision sensor is arranged on the bracket, and its detection port faces the photosensitive film.

9. The extra-large size RTR exposure apparatus according to any one of claims 1 to 8, characterized in that, It further includes an alarm device, and the alarm device is respectively connected to the first deviation rectifying device and the second deviation rectifying device; the alarm device includes but is not limited to a voice alarm, a buzzer alarm, and a flash alarm.

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