Multiple exposure machine and exposure process thereof

Abstract

The invention relates to a multi-exposure machine and an exposure process thereof. The multi-exposure machine comprises a pulling device, exposure equipment arranged in parallel, and a moving device for moving a screen printing plate, the device comprises a screen printing plate, a light source device for irradiating the screen printing plate, a dispensing device for filling the screen printing plate, a developing cylinder for storing a solution, a bubble device for blowing bubbles towards the screen printing plate, a vibration mechanism for driving the screen printing plate to vibrate and a shooting mechanism for shooting the screen printing plate; wherein the light source device is arranged between the adjacent exposure devices; the shooting mechanism is located above the light source device; the dispensing device and the moving device are oppositely arranged on the two sides of the light source device; the pulling device is arranged on the developing cylinder and pulls the screen printing plate to move along the inside of the developing cylinder; and the bubble device and the vibration mechanism are arranged in the developing cylinder and are immersed in the solution. The problems that in an existing scheme, the exposure process of the screen printing plate is not continuous, development and plate repairing are needed in the exposure process, and the efficiency of the whole exposure process of the screen printing plate is low are solved.

Description

Technical Field

[0001] The present invention relates to the field of exposure machines, and particularly to a multiple exposure machine and its exposure process. Background Art

[0002] After the screen printing plate is coated with a film, it needs to pass through an exposure machine to form a pattern on the screen printing plate for the first exposure treatment; then the screen printing plate is soaked for a certain time and then rinsed with a high-pressure water gun to form a pattern, and finally the water is blown dry with an air gun to complete the development treatment; then the impurities in the pattern area of the screen printing plate are removed manually, and the pinholes in the non-pattern area of the screen printing plate are filled to complete the plate repair treatment; then the photosensitive film on the screen printing plate is hardened through the exposure machine for the second exposure treatment to form a finished product.

[0003] The two exposure processes of the screen printing plate are not continuous. After the first exposure, development and plate repair are required before the second exposure, resulting in a low efficiency of the entire exposure process of the screen printing plate.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] Aiming at the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a multiple exposure machine and its exposure process to solve the problem that the exposure process of the screen printing plate in the prior art is not continuous, and development and plate repair are required during the exposure, resulting in a low efficiency of the entire exposure process of the screen printing plate.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] A multiple exposure machine;

[0008] It includes: a pulling device, exposure devices arranged in parallel, a moving device for moving the screen printing plate; a light source device for irradiating the screen printing plate, a dispensing device for filling the screen printing plate, a developing cylinder for storing a solution, a bubble device for blowing bubbles towards the screen printing plate, a vibration mechanism for driving the screen printing plate to vibrate, and a photographing mechanism for photographing the screen printing plate;

[0009] Wherein, the light source device is arranged between adjacent exposure devices; the photographing mechanism is located above the light source device; the dispensing device and the moving device are relatively arranged on both sides of the light source device; the pulling device is arranged on the developing cylinder and pulls the screen printing plate to move along the inside of the developing cylinder; the bubble device and the vibration mechanism are arranged inside the developing cylinder and immersed in the solution.

[0010] A further technical solution is as follows: The exposure device includes: a suction device, a bracket, an exposure main body arranged side by side on the bracket, a cover plate covering the exposure main body, and a first power device arranged on the bracket; wherein, the first power device drives the cover plate to move; the suction end of the suction device is located between the exposure main body and the cover plate.

[0011] A further technical solution is as follows: The moving device includes a first robotic arm, a moving bracket arranged at the driving end of the first robotic arm, and clamping blocks oppositely arranged inside the moving bracket; wherein, the clamping blocks are connected to a gas source, and the two ends of the screen plate are adsorbed by the clamping blocks.

[0012] A further technical solution is as follows: The dispensing device includes a second robotic arm and a glue spraying device arranged at the driving end of the second robotic arm; the second robotic arm drives the glue spraying device to move along the screen plate.

[0013] A further technical solution is as follows: The vibration mechanism includes a vibration block arranged inside the developing cylinder, a driving device for driving the vibration block to vibrate, a cylinder bracket swingably arranged inside the developing cylinder, and a first roller rotatably arranged on the cylinder bracket; the screen plate is moved into between the cylinder brackets, and the first roller rolls on the screen plate; when the screen plate is moved to the extreme position inside the developing cylinder, the screen plate contacts the vibration block.

[0014] A further technical solution is as follows: The pulling device includes a pulling rod rotatably arranged on one side inside the developing cylinder, clamping brackets rotatably arranged at both ends of the pulling rod, a second power device arranged on the developing cylinder, a guiding frame arranged on the other side inside the developing cylinder, a floating frame oppositely connected to the guiding frame, and a second roller rotatably arranged on the floating frame;

[0015] wherein, the clamping brackets clamp the screen plate; the second power device drives the pulling rod to rotate; the screen plate moves through between the floating frames, and the second roller rolls on the screen plate.

[0016] A further technical solution is as follows: The bubble device includes a bubble injector and a flow guide member; the jet end of the bubble injector faces the screen plate; the flow guide member gradually expands along the bubble flow direction; the flow guide members are arranged vertically and horizontally respectively, and the vertically arranged and horizontally arranged flow guide members overlap along the bubble flow direction.

[0017] An exposure process of a multiple exposure machine includes the following processes:

[0018] Planning step: Determine the exposure time according to the screen plate mesh count and film thickness, and plan the number of multiple exposures; determine the patterns of the film negatives in each exposure process according to the number of multiple exposures;

[0019] Multiple exposure step: Includes several exposure processes;

[0020] The exposure process includes: moving the bracket to pick up and place the stencil, and the first robotic arm moves the stencil; a set of moving devices move the exposed stencil out and place it on the light source device, and another set of moving devices move the stencil into the exposure equipment;

[0021] The stencil repair steps: the photographing mechanism photographs the pattern on the stencil and marks the defect positions, analyzes the defect positions to obtain data on the glue spraying positions, glue spraying ranges, and glue spraying amounts; the data are respectively sent to the dispensing device; the second robotic arm drives the dispensing device to move to the corresponding positions, and the dispensing device sprays a certain amount of glue;

[0022] The developing step: the pulling device drives the stencil to move into the developing cylinder and immerse it in the solution; the bubble device sprays bubbles to act on the stencil to form a pattern; the vibration mechanism drives the stencil to vibrate so that impurities are separated from the stencil; the pulling device then moves the stencil out of the developing cylinder.

[0023] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) After the stencil is exposed by the exposure equipment, it can be placed on the light source device for photographing to check for defects, and the defects of the stencil are filled by spraying glue through the dispensing device; the photographing mechanism is located above the light source device. After the stencil is placed on the light source device, the defects of the stencil can be photographed through the photographing mechanism; after the stencil is exposed multiple times by the exposure equipment, the stencil moves above the developing cylinder; the pulling device drives the stencil to move into the developing cylinder and immerse it in the solution. During the movement of the stencil, bubble cleaning and vibration cleaning are performed, so that a clear pattern is formed on the stencil.

[0024] (2) The clamping block is connected to a gas source for adsorption. The clamping block adsorbs the left and right ends of the stencil to fix the stencil in the moving bracket; rapid clamping of the stencil can be achieved, and the stencil can be quickly moved by the first robotic arm to adapt to the exposure rhythm during multiple exposures; the second robotic arm drives the dispensing device to move along the stencil, and the dispensing device moves above the position where the stencil needs to be sprayed with glue, and the dispensing device sprays the glue to cover the position where the stencil needs to be sprayed with glue.

[0025] (3) Since the stencil has been exposed multiple times, the glue film on the stencil has been hardened, and the water resistance and abrasion resistance of the stencil are relatively strong. The bubbles are distributed in an array of dots, and a large number of bubbles are gathered at each point. A large number of bubbles act on a small position on the stencil at the same time, and a large amount of impact force is borne at this position under the action of the bubbles, and the excess film can be removed to form a pattern; by adjusting the degree of gradual diffusion of the flow guiding members, the degree of gradual reduction of the distance between adjacent flow guiding members is controlled, so as to control the flow rate of the bubbles; the faster the flow rate of the bubbles, the stronger the impact force of the bubbles; by adjusting the arrangement density of the vertically arranged and horizontally arranged flow guiding members, the size of the dot area can be adjusted; the greater the arrangement density of the flow guiding members, the smaller the dot area, the greater the bubble density in the dot area, and the impact force of the bubbles is strengthened.

[0026] (4) A set of vibration blocks can drive the stencil to vibrate and the solution near the stencil to vibrate, and the other set of vibration blocks drives the solution near the stencil to vibrate to strengthen the vibration of the solution, so as to form a strong vibration near the stencil; the stencil drops the glue film under the impact of air bubbles, and vibrations are formed near the stencil during the vibration process of the stencil to prevent the glue film from falling on the stencil. Under the action of the vibration of the stencil and the solution, impurities on the stencil are easily detached from the stencil. After the impurities on the stencil are detached from the stencil, the vibration of the solution accelerates the impurities to move away from the stencil.

[0027] (5) Since the guiding surface gradually approaches the stencil while the baffle gradually moves away from the stencil, the guiding surface and the baffle approach and transition to each other. This transition position is close to the stencil and the gas flow rate is fast, so that moisture can be completely removed; the gas flows along the baffle, and at the same time the gas also flows along the surface of the stencil to dry the surface of the stencil; by changing the flow direction and flow rate of the gas through the guiding surface and the baffle, the surface of the stencil can be completely dried. Description of the Drawings

[0028] Figure 1 Shows a schematic structural diagram of a multiple exposure machine according to the first embodiment of the present invention.

[0029] Figure 2 Shows a top view structural diagram of a moving device according to the first embodiment of the present invention.

[0030] Figure 3 Shows a schematic structural diagram of a developing cylinder according to the first embodiment of the present invention.

[0031] Figure 4 Shows a schematic structural diagram of a blowing device according to the first embodiment of the present invention.

[0032] Figure 5 Shows a schematic structural diagram of a bubble injector and a guiding member according to the first embodiment of the present invention.

[0033] Reference numerals in the drawings: 1, exposure device; 11, bracket; 12, exposure main body; 13, cover plate; 14, first power device; 15, suction device; 2, moving device; 21, first robotic arm; 22, moving bracket; 23, clamping block; 3, light source device; 4, dispensing device; 41, second robotic arm; 42, glue spraying device; 5, developing cylinder; 52, blowing device; 521, first blowing cavity; 522, second blowing cavity; 523, guiding surface; 524, baffle; 6, bubble device; 61, bubble injector; 62, guiding member; 7, vibration mechanism; 71, vibration block; 711, vibration rod; 712, third power device; 72, driving device; 73, cylinder bracket; 74, first roller; 8, photographing mechanism; 9, pulling device; 91, pulling rod; 92, clamping frame; 93, second power device; 94, guiding frame; 95, floating frame; 96, second roller. Detailed implementation mode

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the device proposed by the present invention in combination with the attached drawings and specific implementation modes. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the attached drawings adopt a very simplified form and all use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the objectives of the implementation modes of the present invention. In order to make the objectives, features and advantages of the present invention more obvious and understandable, please refer to the attached drawings. It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of the present invention. Therefore, they do not have any technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0035] First embodiment:

[0036] Figure 1 The structural schematic diagram of the multiple exposure machine according to the first embodiment of the present invention is shown. Figure 2 The top view structural schematic diagram of the moving device according to the first embodiment of the present invention is shown. Figure 3 The structural schematic diagram of the developing cylinder according to the first embodiment of the present invention is shown. Figure 4 The structural schematic diagram of the air blowing device according to the first embodiment of the present invention is shown. Figure 5 The structural schematic diagram of the bubble injector and the flow guiding member according to the first embodiment of the present invention is shown. Combining Figures 1 - 5 As shown, the present invention discloses a multiple exposure machine.

[0037] The multiple exposure machine includes: a pulling device 9, exposure devices 1 arranged in parallel, a moving device 2 for moving the screen; a light source device 3 for irradiating the screen, a dispensing device 4 for filling the screen, a developing cylinder 5 for storing the solution, a bubble device 6 for blowing bubbles towards the screen, a vibration mechanism 7 for driving the screen to vibrate, and a photographing mechanism 8 for photographing the screen.

[0038] Among them, the dispensing device 4 and the moving device 2 are relatively arranged on both sides of the light source device 3. The pulling device 9 is arranged on the developing cylinder 5 and pulls the screen to move along the inside of the developing cylinder 5. The bubble device 6 and the vibration mechanism 7 are arranged inside the developing cylinder 5 and immersed in the solution.

[0039] Exemplarily, there are multiple groups of exposure devices 1. The light source device 3 is arranged between adjacent exposure devices 1. After the stencil is exposed by the exposure device 1, it can be placed on the light source device 3 for defect inspection by shooting, and the defects of the stencil are filled with glue by the dispensing device 4. The shooting mechanism 8 is located above the light source device 3. After the stencil is placed on the light source device 3, the defects of the stencil can be shot through the shooting mechanism 8.

[0040] After the stencil is exposed multiple times by the exposure device 1, the stencil moves above the developing cylinder 5. The pulling device 9 drives the stencil to move into the developing cylinder 5 and immerse it in the solution. During the movement of the stencil, bubble cleaning and vibration cleaning are carried out, so that a clear pattern is formed on the stencil.

[0041] The exposure device 1 includes: a suction device 15, a bracket 11 arranged in the left-right direction, an exposure main body 12 arranged side by side on the bracket 11, a cover plate 13 covering the exposure main body 12, and a first power device 14 arranged in the up-down direction on the bracket 11.

[0042] Among them, exemplarily, the first power device 14 is a cylinder. The first power device 14 drives the cover plate 13 to move up and down. Exemplarily, the suction device 15 is an air pump. The suction end of the suction device 15 is located between the exposure main body 12 and the cover plate 13.

[0043] After the stencil is placed on the exposure main body 12, the first power device 14 drives the cover plate 13 to move downward, the cover plate 13 covers the exposure main body 12, the suction device 15 adsorbs the air between the exposure main body 12 and the cover plate 13, and the cover plate 13 shrinks to press and fix the stencil on the exposure main body 12.

[0044] After the stencil exposure is completed, the suction device 15 fills the air between the exposure main body 12 and the cover plate 13, the cover plate 13 expands and no longer presses the stencil, the first power device 14 drives the cover plate 13 to move upward, the cover plate 13 disengages from the exposure main body 12, and the moving device 2 moves the stencil in and out. By driving the cover plate 13 to move through the first power device 14, enough space is left between the exposure main body 12 and the cover plate 13 to facilitate the moving device 2 to move the stencil and avoid interference.

[0045] The moving device 2 includes a first robotic arm 21, a moving bracket 22 arranged at the driving end of the first robotic arm 21, and clamping blocks 23 arranged oppositely inside the moving bracket 22.

[0046] Among them, a notch is formed on one side of the moving support 22 close to the screen plate. When the moving support 22 approaches the screen plate, it is convenient for the screen plate to pass through the notch and be placed inside the moving support 22. The clamping blocks 23 are located on the left and right sides inside the moving support 22. When the screen plate is placed inside the moving support 22, the clamping blocks 23 contact both ends of the screen plate. An air source is connected inside the clamping blocks 23 for adsorption. The clamping blocks 23 adsorb the left and right ends of the screen plate to fix the screen plate inside the moving support 22. The rapid clamping of the screen plate can be realized, and the screen plate can be quickly moved by the first robotic arm 21 to adapt to the exposure rhythm during multiple exposures.

[0047] The dispensing device 4 includes a second robotic arm 41 and a dispensing device 42 provided at the driving end of the second robotic arm 41. The second robotic arm 41 drives the dispensing device 42 to move along the screen plate. The dispensing device 42 moves above the position on the screen plate where glue needs to be dispensed, and the dispensing device 42 sprays out glue to cover the position on the screen plate where glue needs to be dispensed.

[0048] The movement path of the screen plate inside the developing cylinder 5 is divided into a bubble section and a vibration section. The bubble sections are distributed on the left and right sides inside the developing cylinder 5. The vibration section is arranged in the left - right direction and is located at the lower end inside the developing cylinder 5. The left and right ends of the vibration section correspond to the lower ends of the bubble sections.

[0049] When the screen plate passes through the bubble section, the screen plate forms a pattern under the impact of bubbles. When the screen plate passes through the vibration section, the impurities at the pattern position on the screen plate fall off.

[0050] The pulling device 9 includes a pulling rod 91 rotatably arranged on one side inside the developing cylinder 5, clamping frames 92 rotatably arranged at both ends of the pulling rod 91, a second power device 93 arranged on the developing cylinder 5, a guiding frame 94 arranged on the other side inside the developing cylinder 5, a floating frame 95 relatively connected to the guiding frame 94, and a second roller 96 rotatably arranged on the floating frame 95.

[0051] Among them, the second power device 93 is arranged on the front side of the developing cylinder 5. The pulling rod 91 is rotatably arranged on the front side inside the developing cylinder 5 and is connected to the driving end of the second power device 93. The clamping frames 92 clamp the screen plate. The second power device 93 drives the pulling rod 91 to rotate. The screen plate moves through between the relative floating frames 95, and the second roller 96 rolls on the screen plate.

[0052] The pulling device 9 is installed inside the developing cylinder 5. The clamping frames 92 are arranged in the front - rear direction, and the front end of the clamping frame 92 is rotatably connected to the pulling rod 91. Exemplarily, the pulling rod 91 is a spring telescopic rod. After the clamping frames 92 clamp the screen plate and rotate, the state of the screen plate can be changed. The screen plate can be placed horizontally or vertically moved into the developing cylinder 5.

[0053] Exemplarily, the second power device 93 is a motor. The second power device 93 drives the pull rod 91 to rotate. One set of clamping frames 92 drives the screen plate to move in and perform bubble impact and vibration in sequence, and the other set of clamping frames 92 drives the screen plate to move out and perform vibration, bubble impact and drying in sequence. The second power device 93 drives the pull rod 91 to rotate in the reverse direction. One set of clamping frames 92 drives the screen plate to move out and perform vibration, bubble impact and drying in sequence, and the other set of clamping frames 92 drives the screen plate to move in and perform bubble impact and vibration in sequence. By driving the pull rod 91 to rotate forward and backward by the second power device 93, the two sets of screen plates perform plate repair simultaneously.

[0054] The guide frames 94 are arranged on the left and right sides at the rear end inside the developing cylinder 5. The floating frames 95 are threadedly connected to the guide frames 94, and the distance between the relative floating frames 95 can be adjusted, so as to adjust the guiding route of the screen plate.

[0055] The bubble devices 6 are distributed on both sides of the screen plate. The bubbles ejected by the bubble devices 6 finally act on both sides of the screen plate to avoid the blind area of impact. The bubble devices 6 on both sides of the screen plate are arranged in a vertically staggered manner to avoid the bubbles ejected by the bubble devices 6 on both sides acting on the same position of the screen plate simultaneously.

[0056] The bubble device 6 includes a bubble injector 61 and a flow guide member 62. The jet end of the bubble injector 61 faces the screen plate. The flow guide member 62 gradually expands along the bubble flow direction. Exemplarily, the cross section of the flow guide member 62 is triangular. Since the flow guide member 62 gradually expands, the distance between adjacent flow guide members 62 gradually decreases. After the bubbles contact the flow guide member 62, they flow along the space between adjacent flow guide members 62. Since the distance between adjacent flow guide members 62 gradually decreases, the flow velocity of the bubbles gradually increases.

[0057] The flow guide members 62 are arranged vertically and horizontally respectively, and the vertically arranged and horizontally arranged flow guide members 62 overlap along the bubble flow direction. After the bubble injector 61 ejects bubbles, the bubbles gather into vertical strips after passing through the vertically arranged flow guide members 62, and the bubbles gather into arrayed dots after passing through the horizontally arranged flow guide members 62, and finally the bubbles act on the screen plate. Since the screen plate has undergone multiple exposures and the photosensitive film on the screen plate has been hardened, the water resistance and abrasion resistance of the screen plate are relatively strong. The bubbles are distributed in an array of dots, and a large number of bubbles gather at each point. A large number of bubbles act on a small position on the screen plate simultaneously. Under the action of the bubbles, this position bears a large amount of impact force, and the excess film can be removed to form a pattern.

[0058] By adjusting the degree of gradual expansion of the flow guide member 62, the degree of gradual decrease in the distance between adjacent flow guide members 62 is controlled, thereby controlling the flow velocity of the bubbles. The faster the bubble flow velocity, the stronger the impact force of the bubbles.

[0059] The size of the dotted area can be adjusted by adjusting the arrangement density of the vertically and horizontally arranged flow guides 62. The greater the arrangement density of the flow guides 62, the smaller the dotted area, the greater the density of bubbles in the dotted area, and the impact force of the bubbles is strengthened.

[0060] The vibration mechanism 7 includes a vibration block 71 disposed in the developing sleeve 5, a driving device 72 for driving the vibration block 71 to vibrate, a tube support 73 swingably disposed in the developing sleeve 5, and a first roller 74 rotatably disposed on the tube support 73. The screen moves into the tube support 73, and the first roller 74 rolls the screen. The screen moves into the extreme position in the developing sleeve 5, and the screen contacts the vibration block 71.

[0061] A vibration rod 711 is arranged at the lower end of the developing sleeve 5 to rotate in the left and right directions, and a vibration block 71 is arranged vertically at the left and right ends of the vibration rod 711. There is an angle deviation between the positions where the vibration rods 711 at both ends are connected to the developing sleeve 5. The vibration rod 711 is driven to rotate forward or reversely by a certain angle by the third power device 712. The driving end of the third power device 712 and the vibration rod 711 are driven by a transmission belt.

[0062] The vibration rod 711 rotates a certain angle so that the vibration block 71 at the left end rotates to a vertical state, and the vibration block 71 at the right end rotates to a horizontal state. The vibration block 71 at the left end is used to support the left end of one group of screens, and the vibration block 71 at the right end is away from the other group of screens, so as to facilitate the removal of the other group of screens.

[0063] The vibration rod 711 rotates in the opposite direction at a certain angle, so that the vibration block 71 at the right end rotates to a vertical state, and the vibration block 71 at the left end rotates to a horizontal state. The vibration block 71 at the right end is used to support the right end of another group of screens, and the vibration block 71 at the left end is away from one group of screens, so as to facilitate the removal of one group of screens.

[0064] The driving end of the driving device 72 contacts the vibration rod 711, and drives the vibration blocks 71 at both ends to vibrate. Since one group of vibration blocks 71 contacts the screen, the other group of vibration blocks 71 does not contact the screen. One group of vibration blocks 71 can drive the screen to vibrate and the solution near the screen to vibrate, and the other group of vibration blocks 71 drives the solution near the screen to vibrate, which is used to strengthen the vibration of the solution, so that a stronger vibration is formed near the screen.

[0065] The screen drops the film under the impact of bubbles. During the vibration of the screen, vibration is formed near the screen to prevent the film from falling on the screen. Under the action of the vibration of the screen and the solution, impurities on the screen are easily separated from the screen. After the impurities on the screen are separated from the screen, the vibration of the solution accelerates the impurities away from the screen.

[0066] The cylinder bracket 73 is swing-connected to the developing cylinder 5, and the first rollers 74 are located on the upper and lower sides of the screen plate. When the screen plate vibrates, the spring in the pulling rod 91 can offset part of the vibration, preventing the vibration of the screen plate from being transmitted to the second power device 93. When the screen plate vibrates, the screen plate is placed between the cylinder brackets 73, and the screen plate is supported by the rolling of the first rollers 74, restricting the screen plate to prevent it from detaching from the vibration block 71.

[0067] After the screen plate is repaired, it needs to be dried. The multiple exposure machine further includes: a blowing device 52 connected to the air source. The blowing device 52 is inclined and arranged inside the developing cylinder 5, and the installation height of the blowing device 52 is higher than the liquid level height of the solution. The blowing devices 52 are relatively located on both sides of the screen plate, and the opposite blowing devices 52 are staggered with each other. So that the gas blown out by the blowing device 52 acts on both sides of the screen plate successively.

[0068] The blowing device 52 includes a first blowing cavity 521 connected to the air source, a second blowing cavity 522 connected to the first blowing cavity 521, and a baffle 524 arranged on the second blowing cavity 522. A guiding surface 523 is formed on one side of the first blowing cavity 521 close to the screen plate. The guiding surface 523 extends from the outlet of the second blowing cavity 522 towards the screen plate. One end of the baffle 524 is close to the screen plate, and the other end of the baffle 524 is far from the screen plate. One end of the baffle 524 is close to the guiding surface 523.

[0069] The gas from the air source enters the first blowing cavity 521 and fills the first blowing cavity 521. The gas enters the second blowing cavity 522 from the first blowing cavity 521, and the gas blows out from the outlet of the second blowing cavity 522 and flows along the guiding surface 523. The gas gradually approaches the screen plate and scrapes off the moisture on the screen plate.

[0070] Since the guiding surface 523 gradually approaches the screen plate while the baffle 524 gradually moves away from the screen plate, the guiding surface 523 and the baffle 524 approach and transition to each other. This transition position is relatively close to the screen plate, and the gas flow rate is relatively fast, which can completely remove the moisture. The gas flows along the baffle 524, and at the same time, the gas also flows along the surface of the screen plate to dry the surface of the screen plate.

[0071] By changing the flow direction and flow rate of the gas through the guiding surface 523 and the baffle 524, the surface of the screen plate can be completely dried.

[0072] Second Embodiment:

[0073] The exposure process of the multiple exposure machine includes the following processes:

[0074] Planning step: Determine the total exposure time required for the screen plate according to the screen plate mesh number and film thickness, and plan the number of multiple exposures according to the total exposure time. Plan the corresponding number of exposure devices 1 according to the number of multiple exposures.

[0075] Determine the patterns on the film in each exposure process according to the number of multiple exposures. The patterns on the film in the first exposure process and the second exposure process are not complete, and are complete film patterns in subsequent exposure processes. After the screen plate undergoes multiple exposures, the pattern area undergoes a short crosslinking reaction during a short exposure time, while the non-pattern area undergoes a crosslinking reaction and hardening treatment.

[0076] The time of the first exposure process and the second exposure process is the same, and the time of the first exposure process and the second exposure process is less than the time of subsequent exposure processes, resulting in a large difference in hydrophilicity and strength between the pattern area and the non-pattern area.

[0077] Multiple exposure steps: including several exposure processes;

[0078] The exposure process includes: the moving bracket 22 picks up and places the screen plate, and the first robotic arm 21 moves the screen plate.

[0079] The first power device 14 drives the cover plate 13 to cover the exposure body 12, and the suction device 15 evacuates to make the cover plate 13 contract and press the screen plate firmly on the exposure body 12, and the exposure body 12 exposes the screen plate. After the exposure is completed, the suction device 15 blows in gas to expand the cover plate 13, and the first power device 14 drives the cover plate 13 to separate from the exposure body 12.

[0080] A set of moving devices 2 move the exposed screen plate out and place it on the light source device 3, and another set of moving devices 2 move the screen plate into the exposure device 1. The two sets of moving devices 2 complete the actions successively, and the exposure device 1 can quickly enter the next exposure.

[0081] Retouching steps: The photographing mechanism 8 photographs the pattern on the screen plate on the light source device 3 and marks the defect positions, and analyzes the defect positions to obtain data on the glue spraying positions, glue spraying ranges, and glue spraying amounts.

[0082] When the defect position is in the non-pattern area, the light of the light source device 3 will pass through the defect position, and the photographing mechanism 8 photographs the bright light at the defect position to obtain the glue spraying position. According to the size and shape of the bright light range at the defect position, determine the glue spraying range. According to the light transmission degree of the bright light at the defect position, determine the glue spraying amount. The brighter the bright light at the defect position, the more the glue spraying amount. The darker the bright light at the defect position, the less the glue spraying amount.

[0083] Send the data to the dispensing device 4 respectively. The second robotic arm 41 drives the glue spraying device 42 to move to the corresponding defect position, and the second robotic arm 41 drives the glue spraying device 42 to move within the glue spraying range according to the data, and the glue spraying device 42 sprays a certain amount of glue according to the data.

[0084] The defect positions on the screen plate are repaired after spraying, and the repaired screen plate is exposed again. After the screen plate undergoes multiple exposures, the glue film on the screen plate is hardened.

[0085] Developing step: The pulling device 9 drives the stencil into the developing cylinder 5 and immerses it in the solution, and then moves the developed stencil out.

[0086] The second power device 93 drives the pulling rod 91 to rotate. The clamping bracket 92 at one end of the pulling rod 91 moves the stencil into the developing cylinder 5 and immerses it in the solution, and the clamping bracket 92 at the other end of the pulling rod 91 moves the developed stencil out.

[0087] During the process of moving the stencil in: The bubble device 6 sprays out bubbles that act on the stencil to form a pattern. Since the glue film of the stencil has been hardened, the method of first soaking and then flushing with water cannot adapt to the stencil under the new process of this application. Since the glue film has been hardened and has strong water resistance, soaking cannot achieve the softening effect. Since the glue film has been hardened, when flushing with water, if the water pressure is small, the pattern cannot be washed out, and if the water pressure is large, the glue film of the stencil will be washed off in pieces, affecting the integrity of the pattern.

[0088] The bubble device 6 forms a pattern by spraying bubbles in such a way that the bubbles burst when they contact the stencil, and the impact of the bubbles forms the pattern. The bubble ejector 61 sprays out bubbles. After the bubbles pass through the vertically arranged flow guiding members 62, the bubbles gather into vertical strips, and after the bubbles pass through the horizontally arranged flow guiding members 62, the bubbles gather into arrayed dots. A large number of bubbles accumulate in the dot area, causing a certain position on the stencil to withstand the impact of a large number of bubbles in a short time, causing the glue film on the stencil to fall off and form a pattern.

[0089] After the stencil is impacted by the bubbles, there will still be a lot of glue film impurities remaining on the stencil. The vibration mechanism 7 drives the stencil to vibrate, causing the impurities to break away from the stencil.

[0090] The stencil is moved to the bottom of the developing cylinder 5. The first roller 74 rolls to support the stencil and forms a restriction on the stencil, and the stencil contacts the vibration block 71. The driving device 72 drives the vibration block 71 to vibrate, and the vibration block 71 drives the stencil and the solution near the stencil to vibrate, causing the impurities on the stencil to fall off.

[0091] The second power device 93 drives the pulling rod 91 to rotate in the reverse direction. The clamping bracket 92 at one end of the pulling rod 91 moves the developed stencil out, and the clamping bracket 92 at the other end of the pulling rod 91 moves the stencil into the developing cylinder 5 and immerses it in the solution. After the stencil completes the developed vibration, the second power device 93 drives the pulling rod 91 to rotate in the reverse direction. When the developed stencil is moved out and approaches the bubble device 6 again, a pattern has already been formed on the stencil at this time. The bubble ejector 61 on the moving path of the stencil pattern area sprays out bubbles, causing the bubbles to concentrate on impacting the pattern area of the stencil and washing off the remaining impurities in the pattern area of the stencil.

[0092] The second power device 93 drives the pull rod 91 to continue to rotate in the reverse direction. During the process of the developed stencil being moved out, it approaches the air blowing device 52. The gas first enters the first air blowing cavity 521 and then enters the second air blowing cavity 522, and finally flows along the flow guiding surface 523 and the baffle 524 in sequence, removing the solution on the stencil during the flowing process.

[0093] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0094] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A multiple exposure machine, characterized in that, Including: A pulling device (9), an exposure device (1) arranged in parallel, a moving device (2) for moving the stencil; a light source device (3) for irradiating the stencil, a dispensing device (4) for filling the stencil, a developing cylinder (5) for storing the solution, a bubble device (6) for blowing bubbles towards the stencil, a vibration mechanism (7) for driving the stencil to vibrate, and a photographing mechanism (8) for photographing the stencil; Wherein, the light source device (3) is arranged between adjacent exposure devices (1); the photographing mechanism (8) is located above the light source device (3); the dispensing device (4) and the moving device (2) are oppositely arranged on both sides of the light source device (3); the pulling device (9) is arranged on the developing cylinder (5) and pulls the stencil to move along the inside of the developing cylinder (5); the bubble device (6) and the vibration mechanism (7) are arranged inside the developing cylinder (5) and immersed in the solution.

2. The multiple exposure machine according to claim 1, wherein: The exposure device (1) includes: a suction device (15), a bracket (11), exposure bodies (12) arranged in parallel on the bracket (11), a cover plate (13) covering the exposure bodies (12), and a first power device (14) arranged on the bracket (11); wherein, the first power device (14) drives the cover plate (13) to move; the suction end of the suction device (15) is located between the exposure body (12) and the cover plate (13).

3. The multiple exposure machine according to claim 2, wherein: The moving device (2) includes a first robotic arm (21), a moving bracket (22) arranged at the driving end of the first robotic arm (21), and clamping blocks (23) oppositely arranged inside the moving bracket (22); wherein, the clamping blocks (23) are connected to a gas source, and the clamping blocks (23) adsorb both ends of the stencil.

4. The multiple exposure machine according to claim 2, wherein: The dispensing device (4) includes a second robotic arm (41) and a glue spraying device (42) arranged at the driving end of the second robotic arm (41); the second robotic arm (41) drives the glue spraying device (42) to move along the stencil.

5. The multiple exposure machine according to claim 2, wherein: The vibration mechanism (7) includes a vibration block (71) arranged inside the developing cylinder (5), a driving device (72) for driving the vibration block (71) to vibrate, a cylinder bracket (73) swingably arranged inside the developing cylinder (5), and a first roller (74) rotatably arranged on the cylinder bracket (73); the stencil is moved between the cylinder brackets (73), and the first roller (74) rolls on the stencil; when the stencil is moved to the limit position inside the developing cylinder (5), the stencil contacts the vibration block (71).

6. The multiple exposure machine according to claim 2, wherein: The pulling device (9) includes a pulling rod (91) rotatably arranged on one side inside the developing cylinder (5), clamping brackets (92) rotatably arranged at both ends of the pulling rod (91), a second power device (93) arranged on the developing cylinder (5), a guide bracket (94) arranged on the other side inside the developing cylinder (5), a floating bracket (95) oppositely connected to the guide bracket (94), and a second roller (96) rotatably arranged on the floating bracket (95); Among them, the clamping frame (92) clamps the screen printing plate; the second power device (93) drives the pull rod (91) to rotate; the screen printing plate moves through between the floating frames (95), and the second roller (96) rolls on the screen printing plate.

7. The multiple exposure machine according to claim 2, characterized in that: The bubble device (6) includes a bubble injector (61) and a flow guide member (62); the jet end of the bubble injector (61) faces the screen printing plate; the flow guide member (62) gradually expands along the bubble flow direction; the flow guide members (62) are arranged vertically and horizontally respectively, and the vertically and horizontally arranged flow guide members (62) overlap along the bubble flow direction.

8. An exposure process for a multiple-exposure machine, characterized in that, It includes the following processes: Planning step: Determine the exposure time according to the screen printing plate mesh number and film thickness, and plan the number of multiple exposures; Determine the film pattern in each exposure process according to the number of multiple exposures; Multiple exposure step: It includes several exposure processes; The exposure process includes: The moving bracket (22) picks up and places the screen printing plate, and the first robotic arm (21) moves the screen printing plate; A set of moving devices (2) move the exposed screen printing plate out and place it on the light source device (3), and another set of moving devices (2) move the screen printing plate into the exposure device (1); Retouching step: The photographing mechanism (8) photographs the pattern on the screen printing plate and marks the defect positions, analyzes the defect positions to obtain the glue spraying positions, glue spraying ranges and glue spraying amount data; Send the data to the dispensing device (4) respectively; The second robotic arm (41) drives the glue spraying device (42) to move to the corresponding positions, and the glue spraying device (42) sprays a certain amount of glue; Developing step: The pulling device (9) drives the screen printing plate into the developing cylinder (5) and immerses it in the solution; The bubble device (6) sprays bubbles to act on the screen printing plate to form a pattern; The vibration mechanism (7) drives the screen printing plate to vibrate so that impurities are separated from the screen printing plate; The pulling device (9) moves the screen printing plate out of the developing cylinder (5).

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