Preparation process of solar printing nickel screen printing plate

Abstract

The invention relates to a preparation process of a solar printing nickel screen printing plate, and relates to the technical field of nickel screen printing plate manufacturing processes. The method comprises the following steps: S1, spreading a polyester screen on a false frame to form a primary screen printing plate; s2, a release film is placed in the middle of the preliminary screen printing plate, the release film is sequentially covered with a PE film and nickel screen gauze through hot melting operation, and at the moment, the nickel screen gauze is in a contracted and bent state; s3, cutting the polyester net in the middle along the edge of the release film, taking out the release film, and forming a step-shaped structure between the PE film and the nickel net gauze; s4, the false frame is subjected to frame jacking operation on the true frame, the nickel net gauze is stressed and expanded, stable straightness is obtained, and the polyester net is fixed to the true frame to form a screen printing plate; s5, the screen printing plate is pressed with a PM film after being cleaned; and S6, the periphery of the nickel screen gauze is evenly coated with photo-sensitive resist, the screen printing plate is washed after exposure, the photo-sensitive resist in an unexposed area is removed, and screen printing plate preparation is completed. And the straightness of the nickel screen gauze on the finished screen printing plate is higher, so that the quality of the screen printing plate is higher.

Description

Technical Field

[0001] The present application relates to the field of nickel screen printing plate manufacturing technology, and in particular to a nickel screen printing plate manufacturing technology for solar printing. Background Art

[0002] Nickel screens for solar printing play a vital role in the photovoltaic industry. They are one of the core tools for achieving efficient solar cell manufacturing. With the growing global demand for renewable energy and the rapid development of photovoltaic power generation technology, the demand for high-precision, high-quality nickel screens for solar printing is becoming increasingly urgent. These screens must not only possess excellent wear resistance and precise dimensional stability, but also meet complex production process requirements to ensure the performance and efficiency of the final product.

[0003] In practice, a variety of traditional methods are often employed to prepare nickel screens that meet the requirements for solar printing. For example, a simple adhesive can be used to secure the metal mesh to a frame. Alternatively, metal wire can be hand-stretched and embedded into the substrate, followed by a specific chemical treatment to enhance structural strength. Another approach involves directly pressing pre-cut nickel alloy sheets onto the surface of a support layer using hot pressing techniques, while also incorporating precision machining methods such as laser cutting to adjust the shape details.

[0004] However, in the various existing technical means mentioned above, when the nickel mesh is subjected to operations such as hot melting, cleaning and top frame, the nickel mesh will be deformed due to tension, resulting in the finished nickel mesh being in an expanded state, making the final screen quality poor, so it needs to be improved. Summary of the Invention

[0005] In order to improve the problem that when preparing the screen, the nickel mesh yarn expands under tension and has poor straightness, resulting in poor quality of the final screen, the present application provides a solar printing nickel mesh screen preparation process.

[0006] The present application provides a solar printing nickel screen preparation process using the following technical solutions: A solar printing nickel screen plate preparation process comprises the following steps: S1. Stretch the polyester mesh on a false frame to form a preliminary screen; S2. Place a release film in the center of the preliminary screen, cover the release film with a PE film, and heat-seal the PE film so that the release film is pressed against the polyester screen. S3, covering the PE film with nickel mesh gauze, which is now in a shrunk and bent state, and hot-melting it again to fix the nickel mesh gauze on the PE film; S4. Cut the polyester mesh in the middle along the edge of the release film and remove the release film. At this time, a smooth step is formed between the PE film and the nickel mesh. S5, place the real frame directly below the false frame, use the real frame to top frame polyester net, make the nickel mesh screen force expansion, get stable straightness, fix the polyester net on the real frame, cut the polyester net around the real frame, so that the polyester net forms a screen on the real frame; S6, clean the screen and press the PM film; S7, evenly apply photosensitive glue around the nickel mesh screen, take the corresponding pattern film to complete exposure, and in the developing process, wash the screen, remove the photosensitive glue in the unexposed area, and solidify the photosensitive glue in the exposed area.

[0007] By adopting the above technical scheme, during preparation, the polyester net is first fixed on the false frame as a preliminary screen frame, then the release film is placed in the middle of the polyester net, a layer of PE film is covered, then hot melting operation is performed, so that the PE film penetrates on the polyester net, realizing the fixation of the PE film and the polyester net, and the melting point of the release film is relatively high, which will not stick with the polyester net and the PE film, so that the PE film is attached to the polyester net, then the nickel mesh screen is placed in the center relative to the PE film, and is pressed.

[0008] Then turn over the preliminary screen frame, the polyester net originally located in the lowermost layer faces up, so as to facilitate cutting of the polyester net, the cutting track is along the edge of the release film, until the release film can be completely taken out, at this time, the PE film to the nickel mesh screen is left with the shape of the release film, so as to form a step between the PE film and the nickel mesh screen, so that there is no large difference between the nickel mesh screen and the PE film, when used subsequently, the scraper moves more smoothly on the nickel mesh screen, reducing the stress of the scraper, thereby reducing the damage of the scraper and the screen, and improving the printing efficiency.

[0009] When the nickel mesh screen is pressed on the polyester net, the nickel mesh screen is compensated in advance according to the tested inner arc angle, that is, the state of the nickel mesh screen is that the grid lines converge to the center of the nickel mesh screen. When the nickel mesh screen is installed on the polyester net, the preliminary screen is placed above the real frame, the real frame is tightly attached to the polyester net through the top frame operation of the real frame, and the nickel mesh screen is expanded under the influence of tension, so that the grid lines of the nickel mesh screen tend to be flat, improving the quality of the finished screen. Then use glue to bond the real frame and the polyester net, then cut off the excess polyester net along the periphery of the real frame, and finally form a screen.

[0010] Then clean the screen to remove dust and impurities on the surface, and then press the PM film, then evenly apply photosensitive glue around the nickel mesh screen, take the corresponding pattern film to complete exposure, and in the developing process, wash the screen, remove the photosensitive glue in the unexposed area, and solidify the photosensitive glue in the exposed area, to block the four sides of the nickel mesh screen, prevent the pigment from flowing out of the gap at the edge of the nickel mesh screen during subsequent use, and finally complete the preparation of the entire screen.

[0011] Optionally, the screen is cleaned by the cleaning device arranged on the workbench in S6, the cleaning device comprises a cleaning box and a moving assembly, the cleaning box is fixed on the workbench, the cleaning box is open at both ends in the length direction of the workbench, the cleaning box is provided with a cleaning assembly for cleaning the screen, the moving assembly is slidingly connected to the workbench, the moving assembly can move in the length direction of the workbench in the cleaning box, both ends of the moving direction of the moving assembly are provided with a mounting frame for mounting the screen, the two mounting frames are alternately aligned with the cleaning assembly, and the mounting frame can be removed from the opening of the cleaning box.

[0012] By adopting the above technical scheme, in the initial state, the mounting frame is horizontally arranged, and one of the mounting frames is located outside the cleaning box, then the screen to be cleaned is placed on the mounting frame, then the moving assembly is started to drive the mounting frame to move in the length direction of the workbench, thereby driving the screen to enter the cleaning box from one end of the cleaning box, and the other mounting frame is removed from the other end of the cleaning box.

[0013] At this time, the operator places a new screen on the mounting frame removed from the cleaning box, and the previous screen is cleaned by the cleaning assembly in the cleaning box. After the previous screen is cleaned in the cleaning box, the moving assembly drives the mounting frame to reset, so that the previous screen is driven by the mounting frame to be removed from the cleaning box for feeding. The other mounting frame with the new screen enters the cleaning box, and the screen is cleaned at the same time, and the next screen is fed, so that the moving assembly can drive a screen to enter the cleaning box for cleaning each time, thereby continuously cleaning the screen and improving the work efficiency of cleaning several screens.

[0014] Optionally, the moving assembly comprises a moving rod, a moving motor and a connecting rod, the moving rod is arranged in the length direction of the workbench, the end of the moving rod is rotationally connected to the workbench, the moving motor is arranged on the workbench, the output end of the moving motor is coaxially fixed with one end of the moving rod for driving the moving rod to rotate, the connecting rod is sleeved on the moving rod and is threadedly connected with the moving rod, the end of the connecting rod is slidingly connected to the workbench, the moving rod rotates to drive the connecting rod to move in the length direction of the moving rod, the two mounting frames are connected by a mounting frame, and the connecting rod is fixed with the mounting frame.

[0015] By adopting the above technical scheme, when the screen is placed on the mounting frame, the moving motor is started to drive the moving rod to rotate, the connecting rod is driven to move in the length direction of the moving rod due to the threaded connection between the moving rod and the connecting rod, and the mounting frame and the two mounting frames are driven to move in the length direction of the workbench, the mounting frame with the screen is realized to enter and exit the cleaning box by the forward and reverse rotation of the moving rod, and the operation is convenient.

[0016] Optionally, the mounting frame is provided with a fixing assembly for fixing the screen printing plate, the fixing assembly comprises two oppositely arranged fixing plates arranged along the width direction of the working frame, the fixing plates are fixed with support plates arranged along the length direction of the fixing plates and perpendicular to the fixing plates, and the fixing plates abut against the side walls of the screen printing plate when the screen printing plate is placed on the support plates.

[0017] By adopting the above technical scheme, in the initial state, the mounting frame is in a horizontal state, when the screen printing plate is placed on the mounting frame, the screen printing plate abuts against the support plates, so that the support plates are in a horizontal state, and the fixing plates are in a vertical state and abut against the circumferential side walls of the screen printing plate, thereby limiting the movement of the screen printing plate on the mounting frame, and the two fixing plates clamp the screen printing plate to fix the screen printing plate on the mounting frame.

[0018] Optionally, the cleaning box is provided with a turnover assembly, the turnover assembly comprises a rotating wheel, a pushing block and a grooved wheel, the rotating wheel and the grooved wheel are both rotationally connected to the cleaning box, the pushing block is fixed on the rotating wheel, the pushing block can be inserted into the groove of the grooved wheel and move in the groove to drive the rotation of the grooved wheel, the grooved wheel is provided with a connecting assembly, when the mounting frame is located in the cleaning box, the connecting assembly is used to coaxially connect the grooved wheel and the mounting frame, and the rotation of the grooved wheel is used to drive the turnover of the mounting frame.

[0019] By adopting the above technical scheme, when the mounting frame with the screen printing plate enters the cleaning box, the screen printing plate faces the cleaning assembly, the mounting frame is just at the connecting assembly at this time, the connecting assembly coaxially connects the grooved wheel and the mounting frame at this time, drives the rotation of the rotating wheel, so that the pushing block is inserted into the groove of the grooved wheel, and the pushing block makes a circular motion with the center of the rotating wheel as the center, thereby driving the rotation of the grooved wheel, i.e. making the grooved wheel rotate by 90°, under the driving of the connecting assembly, the mounting frame rotates by 90° synchronously, so that the mounting frame is in a vertical state, which is convenient for the cleaning assembly to flush the impurities on the screen printing plate. Subsequently, the rotating wheel continues to drive the rotation of the grooved wheel again, so that the mounting frame with the screen printing plate rotates by 90° again, at this time, the screen printing plate is turned over, so that the side originally facing the cleaning assembly becomes away from the cleaning assembly, which is convenient for the cleaning assembly to clean the screen printing plate in all directions.

[0020] Optionally, the connecting assembly comprises a pushing cylinder and a positioning rod, the pushing cylinder is arranged on the working frame, the positioning rod is connected to the mounting frame through a connecting spring, the positioning rod is coaxial with the mounting frame, a gear is fixedly arranged on the positioning rod, a gear slot is arranged at the center of the grooved wheel, the gear can be inserted into the gear slot, the output shaft of the pushing cylinder is inserted into the gear slot, and the output end of the pushing cylinder can abut against the positioning rod to drive the positioning rod to move towards the center of the mounting frame.

[0021] By adopting the technical scheme, when the installation frame enters the cleaning box, the positioning rod is in abutment with the inner wall of the cleaning box, so that the positioning rod is extruded, the connecting spring is contracted, and the positioning rod is embedded in the installation frame. When the installation frame reaches the ratchet wheel, the positioning rod is aligned with the tooth groove, that is, the positioning rod is separated from the inner wall of the cleaning box, at this time, the connecting spring restores the deformation, so that the positioning rod is inserted into the tooth groove, at the same time, the gear is inserted into the tooth groove, the inner wall of the tooth groove is in abutment with the side wall of the gear, so as to limit the self-rotation of the gear in the tooth groove, thereby making the inner wall of the tooth groove push the gear to rotate synchronously when the gear rotates, and realizing the overturning of the installation frame.

[0022] When the installation frame is overturned, the pushing cylinder is started, so that the output end of the pushing cylinder penetrates out of the tooth groove and moves towards the installation frame, thereby pushing the positioning rod to move, and the positioning rod is ejected from the tooth groove. Then the moving assembly is started to drive the installation frame to move, thereby moving out of the cleaning box with the cleaned screen plate.

[0023] Optionally, the fixed plate is fixed with a linkage rod, the linkage rod is arranged along the width direction of the workbench, and the end of the linkage rod is rotatably linked to the installation frame. The linkage rod is fixed with a clamping plate, the clamping plate is arranged along the length direction of the linkage rod, and the clamping plate is located on both sides of the installation frame with the fixed plate. The clamping plate is fixed with an abutting plate, the abutting plate is arranged along the length direction of the clamping plate and is perpendicular to the clamping plate. When the fixed plate is in abutment with the screen plate, the clamping plate is in an inclined state compared with the fixed plate. The fixed plate and the clamping plate are both provided with electromagnets, and the electromagnets can be adsorbed on the screen plate.

[0024] By adopting the technical scheme, in the initial state, the installation frame is horizontal, the support plate and the fixed plate are upward, the screen plate is placed on the support plate, the fixed plate is in abutment with the side wall of the screen plate, the electromagnet in the fixed plate is started, and the screen plate is adsorbed on the fixed plate, so as to realize the fixed connection between the screen plate and the fixed plate. The electromagnet makes the screen plate not easy to fall off from the installation frame when the installation frame is overturned in the cleaning box. At this time, the fixed plate is in a vertical state, and the clamping plate is not in the same straight line with the fixed plate. The linkage rod fixes the fixed plate and the clamping plate, so that the clamping plate is in an inclined state compared with the vertical line at this time, that is, the two clamping plates are in an open state.

[0025] When the installation frame enters the cleaning box, the overturning assembly drives the installation frame to overturn, so that the originally upward fixed plate becomes downward, and the two clamping plates become open upward. After cleaning, the installation frame moves out of the cleaning box with the screen plate facing downward. At this time, a new screen plate is placed on the installation frame, that is, the new screen plate is in abutment with the abutting plate, so as to press the abutting plate, so that the abutting plate is in a horizontal state, that is, the clamping plate is rotated to a vertical state. The rotation of the clamping plate makes the linkage rod rotate synchronously, so that the fixed plate is gradually rotated to be inclined, and the two clamping plates become open.

[0026] At the same time, the power supply of the electromagnet in the fixing plate is cut off, and the electromagnet in the clamping plate is started, so that the fixing plate can be separated from the screen plate, so that the screen plate loses the fixation of the fixing plate, and realizes the blanking under the action of gravity, and the screen plate above is fixed on the mounting frame under the adsorption of the electromagnet in the clamping plate.

[0027] Similarly, thereafter, the screen plate clamped by the clamping plate is downward, and a new screen plate is placed between the support plates, so that the fixing plate fixes the screen plate above, and the clamping plate is opened, and the above steps are repeated to realize the blanking while the feeding. For a single mounting frame, blanking can be realized while feeding. For two mounting frames, one mounting frame is cleaned while the other mounting frame is fed and blanked, so that the cleaning work and the feeding and blanking work of the whole device are carried out synchronously, and the full-station operation is completed, and the work efficiency of cleaning a plurality of screen plates is further improved.

[0028] Optionally, the working frame is provided with two lifting cylinders, and the two lifting cylinders are located on the two sides of the cleaning box respectively. When one of the mounting frames is located in the cleaning box, the other mounting frame is located directly below one of the lifting cylinders. An electromagnetic ring is arranged on the output end of the lifting cylinder, and the screen frame can be fixed on the electromagnetic ring.

[0029] By adopting the above technical scheme, during cleaning, the screen plate is installed above the mounting frame each time, that is, the mounting frame with the uncleaned screen plate is upwardly entered into the cleaning box, and then the cleaned screen plate is turned over by the turning assembly to be downward, so that the area above the mounting frame is emptied each time when feeding. The electromagnetic ring adsorbs the screen plate to be cleaned, and during installation, the lifting cylinder is lowered to carry the screen plate to the mounting frame. The electromagnetic ring is powered off, so that the screen plate to be cleaned is placed on the mounting frame, and the feeding of the screen plate does not need to be operated. The operator only needs to support the screen plate to be blanked.

[0030] Optionally, the cleaning assembly comprises a water tank and a plurality of spray heads. The water tank is open upward and located at the bottom of the cleaning box. The spray heads are arranged at the top of the cleaning box. The water tank is communicated with the spray heads through a circulating pipe.

[0031] By adopting the above technical scheme, when the screen plate enters the cleaning box, the plurality of spray heads are all directed to the screen plate. The circulating pipe is used to draw water from the water tank, so that the spray heads flush the screen plate below. After the water flows through the screen plate, it all falls into the water tank, realizing the recycling of water.

[0032] Optionally, a cleaning roller is arranged at the opening of the cleaning box, and a sponge is sleeved on the cleaning roller.

[0033] With this technical solution, when the screen enters and exits the cleaning tank, it slides over the cleaning roller. The sponge on the cleaning roller comes into contact with the screen, roughly cleaning any impurities on it. The screen then enters the cleaning tank for a fine wash with water. When the cleaned screen is removed from the cleaning tank, it moves over the sponge, which absorbs some of the screen's surface, wiping it clean and preventing water droplets from carrying dust to the screen.

[0034] In summary, this application has at least one of the following beneficial effects: 1. When the nickel mesh is pressed onto the polyester mesh, the nickel mesh is pre-compensated based on the inner arc angle of the test, that is, the state of the nickel mesh is that the grid lines gather toward the center of the nickel mesh. After the nickel mesh is installed on the polyester mesh, the preliminary mesh is placed above the real frame. Through the top frame operation of the real frame, the real frame is pressed against the polyester mesh. At the same time, the nickel mesh expands under the influence of tension, making the grid lines of the nickel mesh tend to be straight, thereby improving the straightness of the nickel mesh after the screen is prepared, thereby improving the quality of the screen; 2. After the installation frame brings the screen into the cleaning box, another installation frame moves out of the cleaning box, and the new screen is placed in the installation frame that moves out later. After the current screen is cleaned, the installation frame brings the screen back to the original position, that is, it moves out of the cleaning box, and the other installation frame brings the new screen back into the cleaning box. During this process, while the screen is being cleaned, the next screen is being loaded. This allows the moving assembly to drive one screen into the cleaning box for cleaning each time it moves, thereby allowing the cleaning work to be carried out continuously and improving the efficiency of cleaning multiple screens. 3. When the screen is placed between two fixed plates, the two clamping plates open, so that the screen between the clamping plates can be unloaded. Similarly, when the clamping plates are facing upwards and the screen is placed between the two clamping plates, the two fixed plates below will open. Therefore, for a single installation frame, unloading can be achieved while loading. For two installation frames, while one installation frame is being cleaned, the other installation frame is loading and unloading. Therefore, the three processes of cleaning, loading and unloading of the entire device are carried out simultaneously, thereby completing full-station operation and further improving the work efficiency of cleaning multiple screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a cleaning device in a solar printed nickel screen preparation process according to an embodiment of the present application; Figure 2 It is a schematic diagram of the structure of the cleaning component and the moving component; Figure 3 It is a structural diagram of the installation frame; Figure 4 It is a schematic diagram of the structure on the fixed component and the linkage rod; Figure 5Structure diagram of connection relationship of the overturning assembly and the connecting assembly; Figure 6 Structure diagram of the overturning assembly.

[0036] In the figure: 10, cleaning device; 11, cleaning box; 12, moving assembly; 121, moving rod; 122, moving motor; 123, connecting rod; 20, mounting frame; 21, mounting rack; 22, linkage rod; 221, clamping plate; 222, abutting plate; 30, fixing assembly; 31, fixing plate; 32, support plate; 40, overturning assembly; 41, rotating wheel; 42, pushing block; 43, grooved wheel; 431, tooth groove; 50, connecting assembly; 51, pushing cylinder; 52, positioning rod; 521, gear; 522, connecting spring; 60, lifting cylinder; 61, electromagnetic ring; 70, cleaning assembly; 71, water tank; 72, spray head; 73, circulating pipe; 80, cleaning roller; 81, sponge; 90, workbench. DETAILED DESCRIPTION

[0037] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The application is further described in detail.

[0038] The embodiment of the application discloses a solar printing nickel mesh screen preparation process. The solar printing nickel mesh screen preparation process comprises the following steps: S1, stretching a polyester mesh on a false frame to form a preliminary screen; S2, centrally placing a release film on the preliminary screen, covering a PE film on the release film, and using a hot melting machine to make the PE film adhere to the polyester mesh at a temperature of 135 DEG C for 8 seconds; in this process, the heating element of the hot melting machine can be selected from a resistance wire or an infrared radiation sheet, both of which can quickly heat to the target temperature and have good temperature control accuracy; S3, covering a nickel mesh screen on the PE film, at this time, the nickel mesh screen presents a shrinkage and bending state, and then using the hot melting machine to fix it at a temperature of 140 DEG C for 140 seconds, so that the nickel mesh screen is stably adhered to the surface of the PE film; S4, using a cutting tool to cut the polyester mesh in the middle along the edge of the release film, and then taking out the release film, at this time, a smooth stepped structure is naturally formed between the PE film and the nickel mesh screen; S5, placing a true frame directly below the false frame, gradually adjusting the tension of the polyester mesh by means of a jacking mechanism until the predetermined standard is reached, and then tightly adhering the mesh frame and the polyester mesh together with glue, taking down the finished product screen after the glue is completely cured, and then monitoring the finished product screen and slightly adjusting the straightness of the nickel mesh screen, at this time, the straightness of the nickel mesh screen on the finished product screen is higher; The lifting mechanism mentioned here is mainly composed of a base platform, a column bracket and a hand-cranked fine-tuning knob with fine scale markings. The base is recommended to be made of marble to ensure sufficient flatness and load-bearing capacity. At the same time, the fine-tuning knob is equipped with a worm gear transmission system to facilitate precise control of various parameter settings. S6. After cleaning the assembled and fixed screen, it is subjected to a secondary pressing and packaging process with the pre-prepared PM film; S7. Apply the photosensitive adhesive evenly around the nickel mesh, take the corresponding pattern film for comparison and complete the exposure. During the development process, rinse the screen to remove the photosensitive adhesive in the unexposed area and allow the photosensitive adhesive in the exposed area to solidify.

[0039] Reference Figure 1 and Figure 2 The cleaning process in step 6 can be efficiently and standardizedly performed using a specially designed work frame 90 in conjunction with an automated cleaning device 10. The device mainly comprises a cleaning box 11 and a moving assembly 12. The cleaning box 11 is fixedly mounted on the work frame 90 and is open at both ends to facilitate the flow of screens in and out. A horizontally arranged cleaning roller 80 is provided at the opening of the cleaning box 11. The cleaning roller 80 is wrapped with a sponge 81. When the screen enters and exits, it slides on the sponge 81 to clean and wipe the screen.

[0040] Reference Figure 1 and Figure 2 A cleaning assembly 70 is provided inside the cleaning box 11. The cleaning assembly 70 includes a water tank 71 and a plurality of nozzles 72. When the screen enters the cleaning box 11, the plurality of nozzles 72 are all directed towards the screen, and the water in the water tank 71 is extracted by the circulation pipe 73, so that the nozzle 72 flushes the screen below. After the water flows through the screen, it will all fall into the water tank 71, realizing the recycling of water.

[0041] Reference Figure 1 and Figure 2 A cleaning roller 80 is provided at the opening of the cleaning box 11. The cleaning roller 80 is mounted horizontally on the cleaning box 11, that is, the end of the cleaning roller 80 is fixed to the work frame 90, and a sponge 81 is sleeved on the cleaning roller 80. When the screen enters and exits the cleaning box 11, the screen slides over the cleaning roller 80, and the sponge 81 on the cleaning roller 80 contacts the screen, which can roughly clean the impurities on the screen. The screen then enters the cleaning box 11 to receive a fine wash with water. When the cleaned screen moves out of the cleaning box 11, the screen moves on the sponge 81, which can absorb some parts of the screen to wipe the screen, thereby preventing water beads from carrying dust to the screen.

[0042] Reference Figure 1 and Figure 2The moving assembly 12 comprises a horizontal guide rail track arranged throughout and a matching power driving unit, which jointly drive the special mounting frame 20 loaded with the objects to be washed to move stably between the designated positions. Specifically, the moving assembly 12 comprises a moving rod 121, a moving motor 122 and a connecting rod 123. The two side openings of the cleaning tank 11 are located in the length direction of the working frame 90. The moving rod 121 is arranged in the length direction of the working frame 90, and the end of the moving rod 121 is rotationally connected to the working frame 90. The moving motor 122 is arranged on the working frame 90, and the output end of the moving motor 122 is coaxially fixed to one end of the moving rod 121, for driving the moving rod 121 to rotate. The connecting rod 123 is sleeved on the moving rod 121 and is threadedly connected to the moving rod 121. The end of the connecting rod 123 is slidingly connected to the working frame 90. The moving rod 121 rotates to drive the connecting rod 123 to move in the length direction of the moving rod 121. The two mounting frames 20 are connected through the mounting frame 21, and the connecting rod 123 is fixed to the mounting frame 21.

[0043] When the screen is placed on the mounting frame 20, the moving motor 122 is started to drive the moving rod 121 to rotate. Since the moving rod 121 is threadedly connected to the connecting rod 123, the connecting rod 123 is driven to move in the length direction of the moving rod 121, thereby driving the mounting frame 21 and the two mounting frames 20 to move in the length direction of the working frame 90. The forward and reverse rotation of the moving rod 121 realizes the entry and exit of the mounting frame 20 with the screen into and out of the cleaning tank 11, which is convenient to operate.

[0044] Referring to Figure 3 and Figure 4 To fix the screen on the mounting frame 20, the fixing assembly 30 is arranged on the mounting frame 20. The fixing assembly 30 comprises two oppositely arranged fixing plates 31. Two linkage rods 22 are arranged on the mounting frame 20 in the width direction of the working frame 90. The two linkage rods 22 are respectively located at the two side edges of the mounting frame 20. The fixing plates 31 are fixed to the linkage rods 22. The linkage rods 22 are further fixed with support plates 32 which are perpendicular to the fixing plates 31, forming L-shaped rods.

[0045] The linkage rods 22 are fixed with another L-shaped rod with the mounting frame 20 as the boundary. The long side of the other L-shaped rod is a clamping plate 221, and the short side is an abutting plate 222, which are arranged in the width direction of the working frame 90. The clamping plate 221 is not in the same straight line with the fixing plate 31, so that the abutting plate 222 is not parallel to the support plate 32.

[0046] When the screen is placed on the support plate 32, the fixed plate 31 abuts against the side wall of the screen. At this time, the clamping plate 221 is in an inclined state compared with the fixed plate 31, and is opened away from the screen. Similarly, when the screen is placed on the abutting plate 222, the clamping plate 221 abuts against the side wall of the screen, and the two fixed plates 31 are in an open state. In order to increase the stability of the screen placed between the two fixed plates 31 or the two clamping plates 221, an electromagnet is embedded in the fixed plate 31 and the clamping plate 221. When the electromagnet is energized, it can be attracted to the screen.

[0047] Referring to Figure 1 and Figure 5 , in order to increase the comprehensiveness of the screen cleaning in the cleaning tank 11, a turnover assembly 40 for driving the installation frame 20 to rotate is arranged in the cleaning tank 11. The installation frame 21 includes a straight rod and two frame bodies, and the two installation frames 20 correspond to the frame bodies one by one. The central axis of the installation frame 20 arranged along the width direction of the workbench 90 is rotatably connected to the frame body through a rotating shaft. The turnover assembly 40 includes a rotating wheel 41, a pushing block 42 and a grooved wheel 43. The rotating wheel 41 and the grooved wheel 43 are both rotatably connected to the cleaning tank 11. A motor is mounted on the outer side wall of the cleaning tank 11 through bolts. The output end of the motor is coaxially fixed with the rotating wheel 41, which is used to drive the rotating disc to rotate. The pushing block 42 is fixed on the rotating wheel 41. The pushing block 42 can be inserted into the groove of the grooved wheel 43 and moved in the groove of the grooved wheel 43 to drive the grooved wheel 43 to rotate.

[0048] Referring to Figure 2 and Figure 5 , the grooved wheel 43 is connected with the installation frame 20 through a connecting assembly 50. The connecting assembly 50 includes a pushing air cylinder 51 and a positioning rod 52. The pushing air cylinder 51 is arranged on the workbench 90. The positioning rod 52 is connected with the installation frame 20 through a connecting spring 522. One end of the positioning rod 52 close to the inner wall of the cleaning tank 11 is hemispherical. The positioning rod 52 is coaxial with the installation frame 20. A gear 521 is fixedly sleeved on the positioning rod 52. A sleeve pipe is coaxially fixed on the grooved wheel 43. The sleeve pipe penetrates through the cleaning tank 11 and can rotate on the cleaning tank 11.

[0049] Referring to Figure 5 and Figure 6 , a disc is coaxially fixed on the sleeve pipe. A tooth groove 431 is arranged on the side wall of the disc close to the center of the cleaning tank 11. The tooth groove 431 is coaxial with the sleeve pipe. The gear 521 can be inserted into the tooth groove 431. The output shaft of the pushing air cylinder 51 is inserted into the tooth groove 431. The output end of the pushing air cylinder 51 can abut against the positioning rod 52 to drive the positioning rod 52 to move towards the center of the installation frame 20.

[0050] When the installation frame 20 enters the cleaning box 11, the hemispherical end of the positioning rod 52 abuts against the inner wall of the cleaning box 11, so that the positioning rod 52 is subjected to a slanting pressure, thereby causing the positioning rod 52 to move, the connecting spring 522 to contract, and the positioning rod 52 to be embedded in the installation frame 20. When the installation frame 20 reaches the ratchet wheel, the positioning rod 52 is aligned with the tooth groove 431, i.e. the positioning rod 52 is separated from the inner wall of the cleaning box 11, at this time the connecting spring 522 restores the deformation, so that the positioning rod 52 is inserted into the tooth groove 431, at the same time, the gear wheel 521 is inserted into the tooth groove 431, the inner wall of the tooth groove 431 abuts against the side wall of the gear wheel 521, thereby limiting the self-rotation of the gear wheel 521 in the tooth groove 431, and further causing the inner wall of the tooth groove 431 to push the gear wheel 521 to rotate synchronously when the ratchet wheel 43 rotates, thereby realizing the overturning of the installation frame 20. The nozzle 72 realizes the all-around washing of the screen.

[0051] With reference to Figure 5 And Figure 6 When the installation frame 20 is overturned, the pushing cylinder 51 is started, so that the output end of the pushing cylinder 51 penetrates out of the tooth groove 431 and moves towards the installation frame 20, thereby pushing the positioning rod 52 to move, and the positioning rod 52 is pushed out of the tooth groove 431, then the moving assembly 12 is started, and the installation frame 20 is driven to move, thereby moving out of the cleaning box 11 with the screen which has been cleaned.

[0052] The installation frame 20 is point-rotation, and in the moving process, a hole can be formed in the mounting frame 21, which can be adapted to insert the gear wheel 521, when the positioning rod 52 abuts against the inner wall of the cleaning box 11, the positioning rod 52 is in a contracted state, thereby causing the gear wheel 521 to be inserted into the hole in the mounting frame 21, so that the installation frame 20 maintains a horizontal state in the moving process.

[0053] In the initial state, the installation frame 20 is horizontal, the support plate 32 and the fixed plate 31 are upward, the screen is placed on the support plate 32, and the fixed plate 31 abuts against the side wall of the screen, the electromagnet in the fixed plate 31 is started, so that the screen is adsorbed on the fixed plate 31, thereby realizing the fixed connection between the screen and the fixed plate 31. The electromagnet causes the screen not to easily fall from the installation frame 20 when the installation frame 20 is overturned in the cleaning box 11, at this time the fixed plate 31 is in a vertical state, and the clamping plate 221 is not in the same straight line with the fixed plate 31, the linkage rod 22 causes the fixed plate 31 to be fixed with the clamping plate 221, thereby causing the clamping plate 221 to be in an inclined state compared with the vertical line at this time, i.e. the two clamping plates 221 are in an open state.

[0054] With reference to Figure 1 And Figure 4When the installation frame 20 enters the cleaning box 11, the turnover assembly 40 drives the installation frame 20 to turn over, so that the originally upward fixed plate 31 becomes downward, and the two clamping plates 221 become upward and open. After cleaning, the installation frame 20 with the screen plate facing downward is removed from the cleaning box 11, and at this time, the new screen plate is placed on the installation frame 20, that is, the new screen plate abuts against the abutting plate 222, thereby pressing the abutting plate 222, so that the abutting plate 222 is in a horizontal state, that is, the clamping plate 221 is rotated to a vertical state, and the rotation of the clamping plate 221 synchronously drives the linkage rod 22 to rotate, so that the fixed plate 31 is gradually rotated to be inclined, and the two clamping plates 221 become open.

[0055] At the same time, the power supply to the electromagnet in the fixed plate 31 is cut off, and the electromagnet in the clamping plate 221 is started, so that the fixed plate 31 can be separated from the screen plate, the screen plate loses the fixation of the fixed plate 31, and under the action of gravity, the screen plate is discharged, and the screen plate above is fixed on the installation frame 20 under the adsorption of the electromagnet in the clamping plate 221.

[0056] Similarly, after the screen plate clamped by the clamping plate 221 faces downward, the new screen plate is placed between the support plates 32, the fixed plate 31 fixes the screen plate above, and the clamping plate 221 is opened, and the above steps are repeated, so that the screen plate is discharged while the screen plate is loaded. For a single installation frame 20, the screen plate can be discharged while the screen plate is loaded, and for two installation frames 20, one installation frame 20 is cleaned while the other installation frame 20 is loaded and unloaded, so that the cleaning work and the loading and unloading work are synchronously performed, and the full-station operation is completed, and the work efficiency of cleaning the screen plates is further improved.

[0057] Reference Figure 1 During cleaning, the screen plate is installed above the installation frame 20 each time, that is, the installation frame 20 with the uncleaned screen plate faces upward and enters the cleaning box 11, and then under the action of the turnover assembly 40, the cleaned screen plate becomes downward, so that the area above the installation frame 20 is empty each time the screen plate is loaded. In order to facilitate loading, two lifting cylinders 60 are installed on the working frame 90 through supports, and the two lifting cylinders 60 are located on the two sides of the cleaning box 11. When one of the installation frames 20 is located in the cleaning box 11, the other installation frame 20 is located directly below one of the lifting cylinders 60. The output end of the lifting cylinder 60 is fixed with an electromagnetic ring 61, and the electromagnetic ring 61 adsorbs the screen plate to be cleaned. During installation, the lifting cylinder 60 moves downward, the screen plate is placed on the installation frame 20, and the electromagnetic ring 61 is powered off, so that the screen plate to be cleaned is placed on the installation frame 20, and the loading of the screen plate does not need to be operated. The operator only needs to support the discharged screen plate.

[0058] The implementation principle of a solar printing nickel screen preparation process of the embodiment of the present application is as follows: first, the dummy frame polyester mesh and the PE film are pressed together, and then the nickel mesh gauze is placed in the center relative to the PE film for pressing. At this time, the nickel mesh gauze is in a state of shrinkage and bending. Then, a cutting tool is used to cut the polyester mesh in the middle along the edge of the release film, and then the release film is removed. At this time, a step-like structure with a smooth transition will naturally be formed between the PE film and the nickel mesh gauze. Then, the real frame is placed directly below the dummy frame, and the tension of the polyester mesh is gradually adjusted with the help of a lifting mechanism until it reaches a predetermined standard. The mesh frame and the polyester mesh are tightly bonded together with glue, and the finished screen is removed after the glue is completely cured.

[0059] The nickel mesh on the finished screen is then monitored and fine-tuned for straightness. Fine-tuning is performed by cutting the edges of the screen to release tension until the mesh lines are straight, improving screen quality. The inspected screen is cleaned and then laminated with PM film. Finally, photosensitive adhesive is evenly applied around the screen, and the corresponding pattern film is used for comparison and exposure. The adhesive in the unexposed areas is then removed and allowed to cure in the exposed areas, completing the screen preparation.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A solar printing nickel screen plate preparation process, characterized in that: The following steps are involved: S1. Stretch the polyester mesh on a false frame to form a preliminary screen; S2. Place a release film in the center of the preliminary screen, cover the release film with a PE film, and heat-seal the PE film so that the release film is pressed against the polyester screen. S3, covering the PE film with nickel mesh gauze, which is now in a shrunk and bent state, and hot-melting it again to fix the nickel mesh gauze on the PE film; S4. Cut the polyester mesh in the middle along the edge of the release film and remove the release film. At this time, a smooth step is formed between the PE film and the nickel mesh. S5. Place the real frame directly below the false frame, use the real frame to push the polyester mesh against the frame, so that the nickel mesh yarn is forced to expand and obtain stable straightness, fix the polyester mesh on the real frame, and cut the polyester mesh around the real frame so that the polyester mesh forms a screen on the real frame; S6. Clean the screen and press it with the PM film; S7. Apply the photosensitive adhesive evenly around the nickel mesh, take the corresponding pattern film for comparison and complete the exposure. During the development process, rinse the screen to remove the photosensitive adhesive in the unexposed area and allow the photosensitive adhesive in the exposed area to solidify.

2. The solar printed nickel screen preparation process according to claim 1, characterized in that: In S6, the screen is cleaned by a cleaning device (10) provided on a working frame (90), the cleaning device (10) comprising a cleaning box (11) and a moving assembly (12), the cleaning box (11) being fixed on the working frame (90), the cleaning box (11) being located at both ends of the working frame (90) in the length direction and being an open structure, the cleaning box (11) being provided with a cleaning assembly (70) for cleaning the screen, the moving assembly (12) being slidably connected to the working frame (90), the moving assembly (12) being able to move in the cleaning box (11) along the length direction of the working frame (90), the moving assembly (12) being provided with mounting frames (20) for mounting the screen at both ends of the moving direction, the two mounting frames (20) being alternately aligned with the cleaning assembly (70), and the mounting frames (20) being able to move out of the cleaning box (11) from the opening of the cleaning box (11).

3. The solar printed nickel screen preparation process according to claim 2, characterized in that: The moving assembly (12) includes a moving rod (121), a moving motor (122) and a connecting rod (123). The moving rod (121) is arranged along the length direction of the working frame (90). The end of the moving rod (121) is rotatably connected to the working frame (90). The moving motor (122) is arranged on the working frame (90). The output end of the moving motor (122) is coaxially fixed with one end of the moving rod (121) for driving the moving rod (121) to move. 1) self-rotation, the connecting rod (123) is sleeved on the moving rod (121) and is threadedly connected to the moving rod (121), the end of the connecting rod (123) is slidably connected to the working frame (90), the moving rod (121) rotates to drive the connecting rod (123) to move along the length direction of the moving rod (121), the two mounting frames (20) are connected through the mounting frame (21), and the connecting rod (123) is fixed to the mounting frame (21).

4. The solar printed nickel screen preparation process according to claim 2, characterized in that: The mounting frame (20) is provided with a fixing assembly (30) for fixing the screen. The fixing assembly (30) includes two fixing plates (31) arranged opposite to each other. The fixing plates (31) are arranged along the width direction of the working frame (90). A supporting plate (32) is fixed on the fixing plate (31). The supporting plate (32) is arranged along the length direction of the fixing plate (31) and is perpendicular to the fixing plate (31). When the screen is placed on the supporting plate (32), the fixing plate (31) abuts against the side wall of the screen.

5. The solar printed nickel screen preparation process according to claim 2, characterized in that: The cleaning box (11) is provided with a turnover assembly (40), the turnover assembly (40) comprises a rotating wheel (41), a shifting block (42) and a groove wheel (43), the rotating wheel (41) and the groove wheel (43) are both rotatably connected to the cleaning box (11), the shifting block (42) is fixed on the rotating wheel (41), the shifting block (42) can be inserted into the groove of the groove wheel (43) and move in the groove of the groove wheel (43) to drive the groove wheel (43) to rotate, and the groove wheel (43) is provided with a connecting assembly (50), when the installation frame (20) is located in the cleaning box (11), the connecting assembly (50) is used to coaxially connect the groove wheel (43) and the installation frame (20), and the rotation of the groove wheel (43) is used to drive the installation frame (20) to flip.

6. The solar printed nickel screen preparation process according to claim 5, characterized in that: The connecting assembly (50) includes a push cylinder (51) and a positioning rod (52). The push cylinder (51) is arranged on the working frame (90). The positioning rod (52) is connected to the installation frame (20) through a connecting spring (522). The positioning rod (52) is coaxial with the installation frame (20). A gear (521) is fixedly sleeved on the positioning rod (52). A tooth groove (431) is provided at the center of the groove wheel (43). The gear (521) can be adapted to be inserted into the tooth groove (431). The output shaft of the push cylinder (51) is inserted into the tooth groove (431), and the output end of the push cylinder (51) can abut against the positioning rod (52) to drive the positioning rod (52) to move toward the center of the installation frame (20).

7. The solar printed nickel screen preparation process according to claim 4, characterized in that: The fixing plate (31) is fixed with a linkage rod (22), the linkage rod (22) is arranged along the width direction of the working frame (90), and the end of the linkage rod (22) is rotatably linked to the installation frame (20), the linkage rod (22) is fixed with a clamping plate (221), the clamping plate (221) is arranged along the length direction of the linkage rod (22), the clamping plate (221) and the fixing plate (31) are located on both sides of the installation frame (20), the clamping plate (221) is fixed with an abutting plate (222), the abutting plate (222) is arranged along the length direction of the clamping plate (221) and is perpendicular to the clamping plate (221), when the fixing plate (31) is in contact with the screen, the clamping plate (221) is in an inclined state compared with the fixing plate (31), and the fixing plate (31) and the clamping plate (221) are both provided with electromagnets, and the electromagnets can be adsorbed on the screen.

8. The solar printed nickel screen preparation process according to claim 2, characterized in that: Two lifting cylinders (60) are provided on the working frame (90), and the two lifting cylinders (60) are respectively located on both sides of the cleaning box (11). When one of the installation frames (20) is located in the cleaning box (11), the other installation frame (20) is located directly below one of the lifting cylinders (60). An electromagnetic ring (61) is provided on the output end of the lifting cylinder (60), and the screen frame can be fixed on the electromagnetic ring (61).

9. The solar printed nickel screen preparation process according to claim 2, characterized in that: The cleaning assembly (70) comprises a water tank (71) and a plurality of nozzles (72). The water tank (71) is opened upward and is located at the bottom of the cleaning box (11). The nozzles (72) are arranged on the top of the cleaning box (11). The water tank (71) is connected to the nozzles (72) through a circulation pipe (73).

10. The solar printed nickel screen preparation process according to claim 2, characterized in that: A cleaning roller (80) is provided at the opening of the cleaning box (11), and a sponge (81) is sleeved on the cleaning roller (80).

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