Low-power water-based developing and plate-processing machine

Abstract

This invention discloses a low-concentration water-based developing and processing machine, relating to screen printing equipment technology. It aims to solve the problem of generating large volumes of wastewater with very low concentrations of developer, which makes purification during recycling difficult and wasteful. The key technical features include: a base, two frames fixedly connected above the base, and a worktable fixedly connected between the two frames. A conveying mechanism is installed on the worktable, and lifting devices are installed within the frames. A cover is fixedly connected between the movable ends of the lifting devices on both sides. This invention enables the use of small amounts of clean water multiple times to clean PS plates containing residual developer, and fully recovers relatively high-concentration wastewater, thus protecting and conserving resources while preventing water pollution.

Description

Technical Field

[0001] This invention relates to screen printing equipment technology, and more specifically, to a low-water-mixing developing and processing machine. Background Technology

[0002] PS plate, commonly known as pre-coated photosensitive plate, uses a thin aluminum plate as a support and is coated with a non-silver photosensitive material of diazo photosensitive resin.

[0003] Currently, screen printing processes either involve applying a layer of photosensitive emulsion to a screen and exposing it to a black pattern printed on a transparent film, or using a pre-coated photosensitive plate for exposure. After exposure, the soft photosensitive emulsion on the screen only needs to be washed to allow the printed pattern to appear. This process is inefficient and cannot accommodate some special patterns. For certain special patterns and requirements, PS plates must be used for exposure, and after exposure, a developing solution is needed for development. The developing solution also needs to be cleaned after development to avoid affecting subsequent screen printing processes.

[0004] However, current plate developing machines, also known as plate processors, typically involve placing the PS plate on a worktable and then feeding it into the machine via a conveyor mechanism for a series of steps including developing, cleaning, and drying. During this process, especially for cleaning, the machine consumes a large amount of water to remove the developer residue from the PS plate, and it is not guaranteed that the cleaning will be complete. The large amount of wastewater generated during cleaning also cannot be properly treated. Currently, there are some technologies for recycling wastewater; however, due to the extremely large volume of wastewater and the very low proportion of developer it contains, the purification process during recycling is quite difficult and also results in a certain degree of waste.

[0005] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a low-water-displacement developing and processing machine that can use a small amount of clean water multiple times to clean PS plates with residual developer, and fully recover relatively high-concentration wastewater, thereby protecting and saving resources while also avoiding water pollution.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: The low-power water-based developing and processing machine includes a base, two frames fixedly connected above the base, and a worktable fixedly connected between the two frames. A conveying mechanism is provided on the worktable. A lifting device is provided inside the frame. A cover is fixedly connected between the movable ends of the lifting devices on both sides. A three-way solenoid valve and several solenoid valves are fixedly connected to the top surface of the cover. The three-way solenoid valve is connected to a pipe head that penetrates into the cover, and its two inlets on the top surface are used for injecting air and sucking liquid, respectively. The solenoid valve is connected to a nozzle that penetrates into the cover, and its other end is used for injecting clean water and developing solution.

[0008] By adopting the above technical solution and setting up this plate processing machine, the exposed PS plate can be transported by a conveyor mechanism. Then, driven by the lifting device, the cover is placed over the outside of the PS plate. The solenoid valve controls the nozzle to enter the developing solution for development, and clean water is introduced for rinsing. The solenoid valve is closed, and the three-way solenoid valve is opened to inject air to pressurize the area between the cover and the worktable, increasing the solubility of the developing solution in the water. Then, the water containing the developing solution is sucked away. By repeating the steps of spraying water, pressurizing, and sucking away multiple times, the PS plate can be processed. The final wastewater has high purity and low volume, making it convenient for purification.

[0009] The invention is further configured such that: the lower end of the pipe head is flush with the bottom surface of the cover, and an inlet groove communicating with the interior is provided on the outer peripheral wall of the end of the pipe head away from the three-way solenoid valve, and the pipe head between adjacent inlet grooves forms a support part.

[0010] The present invention is further configured such that: the other two inlets of the three-way solenoid valve are respectively connected to a pressurizing pipe and a suction pipe, the other end of the pressurizing pipe is connected to an air pump, and the other end of the suction pipe is connected to a liquid storage tank, and a pump body is connected to the suction pipe.

[0011] The present invention is further configured such that: one end of the solenoid valve away from the nozzle is connected to a connecting pipe, the other end of the connecting pipe is connected to a three-way valve, the other two inlets of the three-way valve are respectively connected to a water pipe and a liquid pipe, the water pipe is connected to a water storage tank, the liquid pipe is connected to a developing tank, and a pump body is connected to both the water pipe and the liquid pipe.

[0012] The present invention is further configured such that a sealing ring with flexible and elastic deformation properties is fixedly connected to the bottom surface of the cover.

[0013] The invention is further configured such that: a plurality of through slots located outside the projected area of ​​the cover are provided on the top surface of the workbench, and the conveying part of the conveying mechanism is located in the through slots.

[0014] The present invention is further configured such that: the conveying mechanism includes a first rotating shaft and a second rotating shaft rotatably connected at both ends within the two side frames, and a plurality of guide rollers are fixedly connected to the first rotating shaft and the second rotating shaft, and the guide rollers are located in the through groove.

[0015] The present invention is further configured such that: a motor is fixedly connected inside the frame, a drive wheel is fixedly connected to the rotating shaft of the motor, and a driven wheel is fixedly connected to the rotating shaft and the rotating shaft, respectively; the drive wheel, the driven wheel, and the driven wheel are connected by a transmission belt.

[0016] The present invention is further configured such that: a groove is provided on one side of the frame facing each other, the lifting device is fixedly connected in the groove, the lifting device includes a rail fixedly connected in the groove, a second motor fixedly connected to the upper end of the rail, a lead screw fixedly connected to the rotating shaft of the second motor and passing through the rail, a nut block threaded to the outside of the lead screw and slidably connected in the rail, and the cover is fixedly connected to the nut block.

[0017] The present invention is further configured such that: an ultrasonic generator is fixedly connected to the top surface of the base and abuts against the bottom surface of the workbench, and the ultrasonic generator is located directly below the cover.

[0018] In summary, the present invention has the following beneficial effects:

[0019] By setting up this plate processing machine, the exposed PS plates can be transported via a conveyor mechanism. Then, driven by a lifter, the cover is placed over the outside of the PS plate. A solenoid valve controls the nozzle to enter the developing solution for development, followed by rinsing with clean water. The solenoid valve is then closed, and a three-way solenoid valve is opened to inject air, pressurizing the area between the cover and the worktable and increasing the solubility of the developing solution in the water. The water containing the dissolved developing solution is then pumped away. This process of spraying water, pressurizing, and pumping is repeated multiple times to complete the processing of the PS plates. The resulting wastewater has high purity and a small volume, making it easy to purify. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a partial exploded view of the present invention;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0025] Figure 6 This is a schematic diagram of the structure of the hidden workbench and base in this invention;

[0026] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0027] Figure 8 for Figure 6 Enlarged view at point E in the middle;

[0028] Figure 9 This is a schematic diagram of the frame structure in this invention;

[0029] Figure 10 for Figure 9 Enlarged view at point F;

[0030] Figure 11 for Figure 9 A magnified view of point G in the middle.

[0031] In the diagram: 1. Base; 2. Frame; 3. Workbench; 4. Lifter; 5. Cover; 6. Three-way solenoid valve; 7. Pressurization pipe; 8. Suction pipe; 9. Solenoid valve; 10. Connecting pipe; 11. Three-way valve; 12. Water pipe; 13. Liquid pipe; 14. Through groove; 15. Guide roller; 16. Rotating shaft one; 17. Rotating shaft two; 18. Driven wheel one; 19. Driven wheel two; 20. Transmission belt; 21. Motor one; 22. Nozzle; 23. Pipe head; 24. Inlet groove; 25. Support; 26. Sealing ring; 27. Drive wheel; 28. Motor two; 29. ​​Track; 30. Lead screw; 31. Nut block. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Example:

[0034] This low-spec water-based plate-developing machine, such as Figure 1 As shown, it includes a base 1, two frames 2 fixedly connected above the base 1, and a worktable 3 fixedly connected between the two frames 2.

[0035] An ultrasonic generator is fixedly connected to the top surface of the base 1, which abuts against the bottom surface of the workbench 3.

[0036] like Figure 1 , 9As shown in Figure 11, a lifting device 4 is provided inside the frame 2. A groove is provided on one side of the frame 2 facing each other. The lifting device 4 is fixedly connected in the groove. The lifting device 4 includes a rail 29 fixedly connected in the groove, a motor 28 fixedly connected to the upper end of the rail 29, a lead screw 30 fixedly connected to the rotating shaft of the motor 28 and passing through the rail 29, and a nut block 31 threadedly connected to the outside of the lead screw 30 and slidably connected in the rail 29.

[0037] A cover 5 is fixedly connected between the movable ends of the two lifting devices 4. That is, the cover 5 is fixedly connected to the nut block 31, and the cover is located directly below the ultrasonic generator cover. Figure 8 As shown, a sealing ring 26 with flexible and elastic deformation properties is fixedly connected to the bottom surface of the cover 5, such as... Figure 1 and 6 As shown, a three-way solenoid valve 6 and several solenoid valves 9 are fixedly connected to the top surface of the cover 5. The three-way solenoid valve 6 is connected to a tube head 23 that penetrates into the cover 5, and its two inlets on the top surface are used for injecting air and sucking liquid, respectively. The solenoid valve 9 is connected to a nozzle 22 that penetrates into the cover 5, and its other end is used for injecting clean water and developing solution.

[0038] like Figure 7 As shown, the lower end of the pipe head 23 is flush with the bottom surface of the cover 5, and an inlet groove 24 communicating with the interior is provided on the outer peripheral wall of the end of the pipe head 23 away from the three-way solenoid valve 6. The pipe head 23 between adjacent inlet grooves 24 forms a support part 25.

[0039] like Figure 1 As shown, the other two inlets of the three-way solenoid valve 6 are connected to the pressurization pipe 7 and the suction pipe 8, respectively. The other end of the pressurization pipe 7 is connected to the air pump, while the other end of the suction pipe 8 is connected to the liquid storage tank. The suction pipe 8 is connected to the pump body.

[0040] like Figure 1 As shown, the end of the solenoid valve 9 furthest from the nozzle 22 is connected to a connecting pipe 10, and the other end of the connecting pipe 10 is connected to a three-way valve 11. The other two inlets of the three-way valve 11 are connected to a water pipe 12 and a liquid pipe 13, respectively. The water pipe 12 is connected to a water storage tank, and the liquid pipe 13 is connected to a developing tank. Both the water pipe 12 and the liquid pipe 13 are connected to a pump body 2.

[0041] Several through slots 14 located outside the projected area of ​​the cover 5 are provided on the top surface of the workbench 3. A conveying mechanism is provided on the workbench 3, and the conveying part of the conveying mechanism is located in the through slots 14, such as... Figure 2-5 As shown, the conveying mechanism includes a first shaft 16 and a second shaft 17 rotatably connected at both ends within the two side frames 2. Several guide rollers 15 are fixedly connected to the first shaft 16 and the second shaft 17, and the guide rollers 15 are located within the through groove 14. Figure 9 and 10As shown, a motor 21 is fixedly connected inside the frame 2. A drive wheel 27 is fixedly connected to the rotating shaft of the motor 21. A driven wheel 18 and a driven wheel 29 are fixedly connected to the rotating shaft 16 and rotating shaft 27, respectively. The drive wheel 27, driven wheel 18 and driven wheel 29 are connected by a transmission belt 20.

[0042] When people use the plate processor, they first place the PS plate, which has already undergone the exposure process, on the worktable 3.

[0043] When motor 21 is started, the rotating shaft of motor 21 drives the drive wheel 27 to rotate. The drive wheel 27 then drives the driven wheel 18 and driven wheel 29 to rotate via the transmission belt 20. The driven wheel 18 and driven wheel 29 then drive the rotating shaft 16 and rotating shaft 27 to rotate. The rotation of rotating shaft 16 and rotating shaft 27 will drive several guide rollers 15 to rotate in the through groove 14, so that the guide rollers 15 have a guiding displacement effect on the PS plate, allowing the PS plate to go directly below the cover 5.

[0044] Next, simply start motor 28 to make motor 28 drive lead screw 30 to rotate. Nut block 31, which is threaded onto lead screw 30, is limited by track 29, so nut block 31 can only move in the vertical direction of track 29. Therefore, nut block 31 drives cover 5 to move downward, and makes the sealing ring 26 on the bottom surface of cover 5 firmly adhere to the top surface of workbench 3, so that PS plate is placed in it. If the area of ​​PS plate is the same as the cross-section of cover 5, sealing ring 26 will directly press on the edge of PS plate.

[0045] Then, by opening pump body two, the liquid pipe 13 can draw the developer from the developing tank, and after passing through the three-way valve 11, it enters the connecting pipe 10, and finally passes through the solenoid valve 9, and is sprayed onto the PS plate by the nozzle 22. After the required amount is reached, pump body two is closed, blocking the path of the developer flow. Then, by opening pump body two, the water pipe 12 can draw water from the water tank, and after passing through the three-way valve 11, the connecting pipe 10, the solenoid valve 9, and the nozzle 22, it is sprayed onto the PS plate and the space formed between the cover 5 and the worktable 3. The amount of water used this time is the amount of water required to dissolve the developer in the previous time.

[0046] Furthermore, during the cleaning process, the ultrasonic generator is activated to effectively agitate the water and developer in the space, allowing the developer residue on the PS plate to fully dissolve in the water.

[0047] Next, after shutting off pump body 2 and the water flow path, the three-way solenoid valve 6 opens the passage of the air pump and the pressurization pipe 7 to pressurize the space between the cover 5 and the worktable 3, increasing the air pressure in the space and greatly improving the solubility of water, so that the developer can be fully dissolved in it. After stopping the air pump, the pressure is released through the passage of the air pump and the pressurization pipe 7, and then the passage of the pressurization pipe 7 is closed, so that the three-way solenoid valve 6 opens the passage of pump body 1 and the suction pipe 8, so that the pipe head 23 can draw water containing the developer dissolved in the space.

[0048] Water enters from the inlet tank 24, and the support part 25 is always in contact with the PS plate or the worktable 3, so that the water can flow well when it is being pumped and the pipe head 23 will not be blocked.

[0049] Then, after closing the passages of pump body 1 and suction pipe 8, the steps of spraying water, pressurizing, and pumping water are repeated again. Each time, a small amount of water is used to complete the suction of residual developer, so that no developer remains on the final PS plate and it can be kept clean. At the same time, the amount of wastewater recovered is small and the proportion of developer is large, which facilitates subsequent recycling and purification.

[0050] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A low-power water-based developing and processing machine, characterized in that: The device includes a base (1), two frames (2) fixedly connected above the base (1), and a workbench (3) fixedly connected between the two frames (2). A conveying mechanism is provided on the workbench (3). A lifter (4) is provided inside the frame (2). A cover (5) is fixedly connected between the movable ends of the lifters (4) on both sides. A three-way solenoid valve (6) and several solenoid valves (9) are fixedly connected to the top surface of the cover (5). The three-way solenoid valve (6) is connected to a through-hole that extends into the cover (5). The tube head (23) inside has two inlets on its top surface for injecting air and drawing liquid respectively. The solenoid valve (9) is connected to a nozzle (22) that penetrates into the cover (5), and its other end is used to inject water and developer. The lower end of the tube head (23) is flush with the bottom surface of the cover (5), and an inlet groove (24) communicating with the interior is opened on the outer peripheral wall of the end of the tube head (23) away from the three-way solenoid valve (6). The tube head (23) between adjacent inlet grooves (24) forms a support part (25).

2. The low-water-mixed developing and processing machine according to claim 1, characterized in that: The other two inlets of the three-way solenoid valve (6) are respectively connected to a pressurizing pipe (7) and a suction pipe (8). The other end of the pressurizing pipe (7) is connected to an air pump, and the other end of the suction pipe (8) is connected to a liquid storage tank. A pump body is connected to the suction pipe (8).

3. The low-water-mixed developing and processing machine according to claim 1, characterized in that: The end of the solenoid valve (9) away from the nozzle (22) is connected to a connecting pipe (10), and the other end of the connecting pipe (10) is connected to a three-way valve (11). The other two inlets of the three-way valve (11) are connected to a water pipe (12) and a liquid pipe (13), respectively. The water pipe (12) is connected to a water storage tank, and the liquid pipe (13) is connected to a developing tank. Both the water pipe (12) and the liquid pipe (13) are connected to a pump body.

4. The low-water-mixed developing and processing machine according to claim 1, characterized in that: A sealing ring (26) with flexible and elastic deformation properties is fixedly connected to the bottom surface of the cover (5).

5. The low-water-mixed developing and processing machine according to claim 1, characterized in that: The workbench (3) has several through slots (14) on its top surface that are outside the projected area of ​​the cover (5), and the conveying part of the conveying mechanism is located in the through slots (14).

6. The low-water-mixed developing and processing machine according to claim 5, characterized in that: The conveying mechanism includes a first shaft (16) and a second shaft (17) rotatably connected at both ends to the two side frames (2). Several guide rollers (15) are fixedly connected to the first shaft (16) and the second shaft (17), and the guide rollers (15) are located in the through groove (14).

7. The low-water-mixed developing and processing machine according to claim 6, characterized in that: A motor (21) is fixedly connected inside the frame (2). A drive wheel (27) is fixedly connected to the rotating shaft of the motor (21). A driven wheel (18) and a driven wheel (19) are fixedly connected to the rotating shaft (16) and rotating shaft (17), respectively. The drive wheel (27), driven wheel (18) and driven wheel (19) are connected by a transmission belt (20).

8. The low-water-mixed developing and processing machine according to claim 1, characterized in that: The frame (2) has a groove on one side facing each other. The lifting device (4) is fixedly connected in the groove. The lifting device (4) includes a track (29) fixedly connected in the groove, a second motor (28) fixedly connected to the upper end of the track (29), a lead screw (30) fixedly connected to the rotating shaft of the second motor (28) and passing through the track (29), and a nut block (31) threadedly connected to the outside of the lead screw (30) and slidably connected in the track (29). The cover (5) is fixedly connected to the nut block (31).

9. The low-water-mixed developing and processing machine according to claim 1, characterized in that: An ultrasonic generator is fixedly connected to the top surface of the base (1) and abuts against the bottom surface of the workbench (3), and the ultrasonic generator is located directly below the cover (5).

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