Ceramic photocuring printing slurry treatment system

Abstract

The invention discloses a ceramic photocuring printing slurry treatment system, an adopted forming device comprises a forming platform and a feeding platform, the forming platform and the feeding platform are arranged side by side, a scraper device is arranged at the upper end of the forming platform, and a scraper on the scraper device can scrape slurry on the feeding platform to the forming platform. Slurry is formed on the forming platform, redundant slurry falls into the slurry collecting device under the action of the scraper, the scraper device can reciprocate at the upper ends of the forming platform and the feeding platform, a filtering device is arranged on the slurry collecting device and can filter the redundant slurry, and the slurry feeding device is arranged on one side of the feeding platform. The feeding platform is used for feeding slurry into the feeding platform; according to the invention, slurry transfer is reduced, impurities introduced by external contact are avoided, manual operation is also reduced, the production efficiency is greatly improved, equipment feeding in the printing process is not interrupted, and the interlayer combination problem of continuous printing is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of additive manufacturing printing equipment, and in particular relates to a ceramic photocuring printing slurry processing system. Background Art

[0002] Photocuring refers to the curing process of monomers, oligomers or polymer matrices under light induction. It is characterized by high efficiency, wide adaptability, economy, energy saving and environmental protection. The activation energy generated by ultraviolet light with the highest energy in the spectrum can break the CC bond of unsaturated polyester resin and generate free radicals to cure the resin: when a photosensitizer is added to the unsaturated polyester resin, ultraviolet light or visible light is used as an energy source to initiate a cross-linking reaction in the resin.

[0003] Because the ceramic photocuring forming material is a non-Newtonian fluid mixed with photosensitive resin and ceramic powder, it has a high viscosity and is easy to contain bubbles and enter the slurry during the circulation process; and because foreign matter or parts fragments may enter the slurry during the forming process, recycling it again may cause forming defects. Therefore, the redundant slurry after forming needs to be filtered and degassed before it can be recycled.

[0004] The common slurry processing method is: pour the collected redundant slurry into the filter, speed up the filtration speed by stirring, and then transfer the filtered slurry to the vacuum degassing machine. After the degassing is completed, the slurry in the degassing machine is transferred to the feed cylinder of the forming equipment. Due to the limited volume and load of the filter, the slurry needs to be added multiple times during the filtration process, and the slurry has high viscosity. During the multiple transfers, not only will the container wall be wasted, but also bubbles or foreign matter will be introduced again due to the multiple contacts between the slurry and the outside world. This will greatly affect the production efficiency and forming quality.

[0005] During the forming process, the cross-linking reaction takes a certain amount of time. When the N+1 layer is formed, the N layer has not yet been completely cured, so the N layer and the N+1 layer undergo a cross-linking reaction again to make the interlayer bond tighter. In order to ensure forming, a redundant feeding mode is used. The feeding amount is generally 3-4 times the thickness of the layer, that is, the feeding cylinder needs to rise 3-4mm for every 1mm drop of the forming platform. When the printed parts are high, the slurry in the feeding cylinder cannot meet the amount required for the printing process, and the printing process needs to be paused to add material to the feeding cylinder. Usually, the method of increasing the volume of the feeding cylinder is used to meet the purpose of uninterrupted forming, but the equipment cost, space, and difficulty will be greatly increased. Summary of the invention

[0006] The object of the present invention is to provide a ceramic photocuring printing slurry processing system to overcome the problem in the prior art that ceramic photocuring printing cannot achieve continuous feeding printing.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A ceramic photocurable printing slurry processing system comprises a forming device, a slurry collecting device and a slurry supplying device; the forming device comprises a forming platform and a supplying platform, the forming platform and the supplying platform are arranged side by side, the slurry collecting device is arranged on one side of the forming platform, a scraper device is arranged on the upper end of the forming platform, the scraper on the scraper device can scrape the slurry on the supplying platform to the forming platform, the slurry is formed on the forming platform, and the excess slurry falls into the slurry collecting device under the action of the scraper, the scraper device can reciprocate on the upper ends of the forming platform and the supplying platform, a filtering device is arranged on the slurry collecting device, and the slurry supplying device is arranged on one side of the supplying platform.

[0008] Preferably, the forming platform includes a forming cylinder and a forming plate arranged in the forming cylinder, and a driving device for controlling the up and down movement of the forming plate is arranged at the bottom of the forming plate.

[0009] Preferably, the driving device adopts a screw transmission mechanism or a hydraulic driving mechanism.

[0010] Preferably, the forming cylinder of the forming platform is arranged flush with the upper end surface of the feeding platform.

[0011] Preferably, the feeding platform includes a feeding cylinder and a feeding plate. The feeding plate is arranged in the feeding cylinder. A driving device for driving the feeding plate to move up and down in the feeding cylinder is arranged at the bottom of the feeding cylinder. The driving device setting structure at the bottom of the feeding cylinder is the same as the driving device structure set at the bottom of the forming platform.

[0012] Preferably, a discharge port is provided at the upper end of the feeding cylinder body, and the upper end of the discharge port is flush with the upper end surface of the feeding platform. The slurry supplied from the discharge port is scraped and sent to the forming plate in the forming platform by a scraper device.

[0013] Preferably, a material receiving plate flush with the upper end surface of the forming cylinder of the forming platform is provided on one side of the forming platform, and a material receiving funnel is provided on the material receiving plate.

[0014] Preferably, the slurry collecting device comprises a slurry collecting cylinder and a slurry collecting plate arranged in the slurry collecting cylinder, and a driving device for driving the slurry collecting plate to move up and down in the slurry collecting cylinder is arranged at the bottom of the slurry collecting plate.

[0015] Preferably, a connecting flange is provided at the upper end of the slurry collecting cylinder, and the filtering device comprises a filtering screen and a mounting flange, and the filtering screen is fixed to the connecting flange at the upper end of the slurry collecting cylinder via the mounting flange.

[0016] Preferably, it also includes a slurry degassing device, which includes a slurry collecting cylinder cover plate and a stirring head. The slurry collecting cylinder cover plate is provided with a through hole, and a vacuum device is provided on the upper end of the slurry collecting cylinder cover plate. The stirring head passes through the slurry collecting cylinder cover plate.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides a ceramic photocuring printing slurry processing system, comprising a forming device, a slurry collecting device and a slurry supplying device; the forming device comprises a forming platform and a supplying platform, the forming platform and the supplying platform are arranged side by side, the slurry collecting device is arranged on one side of the forming platform, a scraper device is arranged on the upper end of the forming platform, the scraper on the scraper device can scrape the slurry on the supplying platform to the forming platform, the slurry is formed on the forming platform, and the excess slurry falls into the slurry collecting device under the action of the scraper, the scraper device can reciprocate on the upper ends of the forming platform and the supplying platform, a filtering device is arranged on the slurry collecting device, which can filter the excess slurry, and the slurry supplying device is arranged on one side of the supplying platform, and is used to supply slurry to the supplying platform; the present invention not only reduces the transportation of slurry to avoid the introduction of impurities by external contact, but also reduces manual operation, greatly improves production efficiency, and does not interrupt the printing process to add materials to the equipment, thereby avoiding the problem of interlayer bonding in continuous printing.

[0018] Preferably, a screw transmission mechanism is used, and the pitch and rotation angle of the screw are used to control the rising or falling height of the forming plate. The control accuracy is high, the transmission structure is stable, and the forming accuracy of the parts to be formed can be ensured.

[0019] Preferably, the slurry collecting cylinder cover plate can be connected to the connecting flange at the upper end of the slurry collecting cylinder body, and there is no need to discharge the slurry, so the slurry can be quickly defoamed. The collected and filtered slurry can be stirred by a driven stirring head, and then the slurry collecting cylinder body can be vacuumed by a vacuum device to remove bubbles in the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of a ceramic photocuring printing slurry processing system in an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the installation structure of the scraper device in an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the structure of the slurry collecting device in an embodiment of the present invention.

[0023] Figure 4 Schematic diagram of the structure of the filtering device in the embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the slurry degassing device in an embodiment of the present invention.

[0025] Figure 6It is a schematic diagram of the installation of the cover plate structure used for feeding in an embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the installation structure of the slurry degassing device in an embodiment of the present invention.

[0027] In the figure, 1, forming device; 2, slurry collecting device; 3, slurry supply device; 4, forming platform; 5, supply platform; 6, scraper device; 7, forming cylinder; 8, forming plate; 9, supply cylinder; 10, supply plate; 11, discharge port; 12, receiving plate; 13, receiving funnel; 14, slurry collecting cylinder; 15, slurry collecting plate; 16, connecting flange; 17, filter screen; 18, mounting flange; 19, storage baffle; 20, slurry degassing device; 21, slurry collecting cylinder cover plate; 22, stirring head; 23, driving motor; 24, scraper main frame; 25, scraper fixing plate; 26, scraper; 27, adjusting screw; 28, moving wheel. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] like Figures 1 to 7As shown, the present invention provides a ceramic photocuring printing slurry processing system, comprising a forming device 1, a slurry collecting device 2 and a slurry supplying device 3; the forming device 1 comprises a forming platform 4 and a supplying platform 5, the forming platform 4 and the supplying platform 5 are arranged side by side, the slurry collecting device 2 is arranged on one side of the forming platform 4, and a scraper device 6 is arranged on the upper end of the forming platform 4, the scraper on the scraper device 6 can scrape the slurry on the supplying platform 5 to the forming platform 4, the slurry is formed on the forming platform 4, and the excess slurry falls into the slurry collecting device 2 under the action of the scraper, the scraper device 6 can reciprocate on the upper ends of the forming platform 4 and the supplying platform 5, the slurry collecting device 2 is provided with a filtering device, which can filter the excess slurry, and the slurry supplying device 3 is arranged on one side of the supplying platform 5, for supplying slurry to the supplying platform 5; the present invention not only reduces the transportation of slurry to avoid the introduction of impurities by external contact, but also reduces manual operation, greatly improves production efficiency, and does not interrupt the printing process to feed the equipment, thereby avoiding the problem of interlayer bonding in continuous printing.

[0031] In the specific implementation mode of this application, Figure 2 As shown, the forming platform 4 includes a forming cylinder body 7 and a forming plate 8 arranged in the forming cylinder body 7. A driving device for controlling the up and down movement of the forming plate 8 is arranged at the bottom of the forming plate 8. The driving device is used to control the up and down reciprocating movement of the forming plate 8. The space between the upper end of the forming plate 8 and the forming cylinder body 7 forms a single-layer forming space. The up and down movement distance of the forming plate 8 is set according to the slice thickness of the part to be formed.

[0032] The driving device adopts a screw transmission mechanism or a hydraulic driving mechanism; the screw transmission mechanism uses the pitch and rotation angle of the screw to control the rising or falling height of the forming plate 8, with high control accuracy and stable transmission structure, which can ensure the forming accuracy of the parts to be formed.

[0033] A hydraulic drive mechanism is adopted, and the extension and retraction of the hydraulic rod is utilized to control the rising height of the forming plate 8, which has a simple structure and high control accuracy.

[0034] The driving device passes through the bottom of the forming cylinder 7 , and a sealing gasket is arranged between the driving device and the forming cylinder 7 .

[0035] The forming cylinder 7 of the forming platform 4 is arranged flush with the upper end surface of the feeding platform 5. The feeding platform 5 includes a feeding cylinder 9 and a feeding plate 10. The feeding plate 10 is arranged in the feeding cylinder 9. A driving device for driving the feeding plate 10 to move up and down in the feeding cylinder 9 is arranged at the bottom of the feeding plate 10. The driving device at the bottom of the feeding cylinder 9 has the same structure as the driving device at the bottom of the forming platform 4. The same driving structure can improve the universal matching of parts. A silo is formed between the upper end of the feeding plate 10 and the feeding cylinder 9 for placing slurry; a discharge port 11 is arranged at the upper end of the feeding cylinder 9. The upper end of the discharge port 11 is arranged flush with the upper end surface of the feeding platform 5. The slurry supplied from the discharge port 11 is scraped and sent to the forming plate 8 in the forming platform 4 by the scraper device 6. The slurry is solidified and formed by the forming system. The forming system adopts the existing light-curing forming structure for solidifying and forming the slurry.

[0036] A receiving plate 12 flush with the upper end surface of the forming cylinder 7 of the forming platform 4 is provided on one side of the forming platform 4, and a receiving funnel 13 is provided on the receiving plate 12. The receiving funnel 13 is arranged at an angle to the receiving plate 12, and the slurry collecting device 2 is arranged at the bottom of the receiving funnel 13. Excess slurry from molding enters the slurry collecting device 2 through the receiving funnel 13 on the receiving plate 12.

[0037] like Figure 3 As shown, the slurry collecting device 2 includes a slurry collecting cylinder 14 and a slurry collecting plate 15 disposed in the slurry collecting cylinder 14. A driving device for driving the slurry collecting plate 15 to move up and down in the slurry collecting cylinder 14 is disposed at the bottom of the slurry collecting plate 15. The driving device disposed at the bottom of the slurry collecting device 2 can have the same structure as the driving device disposed at the bottom of the forming platform 4, and has high adaptability. A bracket is disposed at the bottom of the slurry collecting cylinder 14, and a moving wheel 28 is disposed at the lower end of the bracket structure at the bottom of the slurry collecting cylinder 14 to facilitate the overall movement of the slurry collecting cylinder 14.

[0038] The upper end of the slurry collecting cylinder 14 is provided with a connecting flange 16. Figure 4 As shown, the filtering device includes a filter screen 17 and a mounting flange 18. The filter screen 17 is fixed to the connecting flange 16 at the upper end of the slurry collecting cylinder 14 through the mounting flange 18, forming a filtering structure at the upper end of the slurry collecting cylinder 14. The excess slurry flowing out of the receiving funnel 13 is filtered by the filter screen 17 and then enters the slurry collecting cylinder 14, thereby realizing rapid filtration of the excess slurry.

[0039] In a specific embodiment of the present application, a material storage baffle 19 is also provided at the upper end of the mounting flange 18. The material storage baffle 19 is arranged along the circumference of the mounting flange 18 to prevent excess slurry from overflowing from the peripheral side of the mounting flange 18 during the filtration process, thereby ensuring the safety and stability of slurry filtration.

[0040] In the specific implementation mode of this application, Figure 5 , Figure 7 As shown, it also includes a slurry degassing device 20, which includes a slurry collecting cylinder cover plate 21 and a stirring head 22. The slurry collecting cylinder cover plate 21 is provided with a through hole, and a vacuum device is arranged on the upper end of the slurry collecting cylinder cover plate 21. The stirring head 22 passes through the slurry collecting cylinder cover plate 21. A driving motor 23 for driving the stirring head 22 to rotate is arranged on the upper end of the slurry collecting cylinder cover plate 21. The driving motor 23 can drive the stirring head 22 to rotate; the slurry collecting cylinder cover plate 21 can be connected to the connecting flange at the upper end of the slurry collecting cylinder body 14, and there is no need to discharge the slurry, so that the slurry can be quickly degassed. The driving stirring head 22 is used to stir the collected and filtered slurry, and then the vacuum device is used to vacuum the slurry collecting cylinder body 14, so as to remove the bubbles in the slurry.

[0041] The slurry collecting device 2 and the slurry supplying device 3 of the present application can adopt the same cylinder structure, and a vacuum joint is provided on the upper end of the slurry collecting cylinder cover plate 21, and the vacuum device is connected by a vacuum pipe; or a replaceable cover plate structure is fixedly connected to the slurry collecting cylinder 14 through a flange structure; when it is necessary to collect slurry, the filter screen 17 is installed by the mounting flange 18 to filter the slurry, and then the mounting flange is replaced, and the slurry collecting cylinder cover plate 21 that can be connected to the vacuum device is installed on the slurry collecting cylinder 14, and after the slurry in the slurry collecting cylinder 14 is defoamed, the cover plate structure for feeding is replaced again, such as Figure 6 As shown, it is connected to the feed cylinder 9 through a pipeline, and the slurry in the slurry collecting cylinder 14 is pushed out and transferred to the feed cylinder 9 through the slurry collecting plate 15, thereby realizing the rapid supply of slurry. The replaceable slurry collecting cylinder structure is adopted, which greatly improves the working efficiency.

[0042] In the specific implementation mode of this application, Figure 2As shown, the scraper device 6 includes a scraper main frame 24, a scraper fixing plate 25 and a scraper 26. The scraper main frame 24 is used to be fixedly connected to the scraper driving frame. The scraper fixing plate 25 is fixed to the scraper main frame 24 by an adjusting screw 27. The scraper 26 is fixed to the scraper mounting portion at the bottom of the scraper fixing plate 25 by a fastening screw. During installation and leveling, the scraper 26 is first fixed to the scraper mounting portion of the scraper fixing plate 25 by a fastening screw, and then the scraper fixing plate 25 with the scraper 26 installed is installed on the scraper guide main frame 24. During installation, the adjusting screw 27 is first pre-tightened to the scraper fixing plate and the scraper main frame 24, and then the scraper driving frame is used to drop the scraper fixing plate 25 together with the scraper 26, so that the scraper 26 on the scraper fixing plate 25 falls onto the forming platform, and the scraper 26 is in linear contact with the forming platform. Then the adjusting screw 27 is tightened to ensure that the scraper is always parallel to the forming plane when spreading the material.

[0043] Based on the above-mentioned ceramic light-curing printing slurry processing system, the present invention provides a feeding method for uninterrupted printing, comprising the following steps: The present invention not only reduces the transportation of slurry to avoid the introduction of impurities by external contact, but also reduces manual operations, greatly improves production efficiency, and does not interrupt the printing process to add materials to the equipment, thus avoiding the problem of inter-layer bonding in continuous printing.

Claims

1. A ceramic light-curing printing slurry processing system, characterized in that: The invention comprises a forming device (1), a slurry collecting device (2) and a slurry supplying device (3); the forming device (1) comprises a forming platform (4) and a supplying platform (5); the forming platform (4) and the supplying platform (5) are arranged side by side; the slurry collecting device (2) is arranged on one side of the forming platform (4); a scraper device (6) is arranged on the upper end of the forming platform (4); a scraper on the scraper device (6) can scrape the slurry on the supplying platform (5) to the forming platform (4); the slurry is formed on the forming platform (4); excess slurry falls into the slurry collecting device (2) under the action of the scraper; the scraper device (6) can reciprocate on the upper ends of the forming platform (4) and the supplying platform (5); a filtering device is arranged on the slurry collecting device (2); and the slurry supplying device (3) is arranged on one side of the supplying platform (5).

2. A ceramic light-curing printing slurry processing system according to claim 1, characterized in that: The forming platform (4) comprises a forming cylinder (7) and a forming plate (8) arranged in the forming cylinder (7), and a driving device for controlling the upward and downward movement of the forming plate (8) is arranged at the bottom of the forming plate (8).

3. A ceramic photocuring printing slurry processing system according to claim 2, characterized in that: The driving device adopts a screw transmission mechanism or a hydraulic driving mechanism.

4. A ceramic photocuring printing slurry processing system according to claim 2, characterized in that: The forming cylinder (7) of the forming platform (4) is arranged flush with the upper end surface of the feeding platform (5).

5. A ceramic light-curing printing slurry processing system according to claim 4, characterized in that: The feeding platform (5) comprises a feeding cylinder (9) and a feeding plate (10). The feeding plate (10) is arranged in the feeding cylinder (9). A driving device for driving the feeding plate (10) to move up and down in the feeding cylinder (9) is arranged at the bottom of the feeding cylinder (10). The arrangement structure of the driving device at the bottom of the feeding cylinder (9) is the same as the arrangement structure of the driving device at the bottom of the forming platform (4).

6. A ceramic light-curing printing slurry processing system according to claim 5, characterized in that: A discharge port (11) is provided at the upper end of the feeding cylinder body (9), and the upper end of the discharge port (11) is arranged flush with the upper end surface of the feeding platform (5). The slurry supplied from the discharge port (11) is scraped by a scraper device (6) onto a forming plate (8) in the forming platform (4).

7. A ceramic light-curing printing slurry processing system according to claim 2, characterized in that: A material receiving plate (12) flush with the upper end surface of the forming cylinder body (7) of the forming platform (4) is provided on one side of the forming platform (4), and a material receiving funnel (13) is provided on the material receiving plate (12).

8. The ceramic photocuring printing slurry processing system according to claim 1, characterized in that: The slurry collecting device (2) comprises a slurry collecting cylinder (14) and a slurry collecting plate (15) arranged in the slurry collecting cylinder (14); a driving device for driving the slurry collecting plate (15) to move up and down in the slurry collecting cylinder (14) is arranged at the bottom of the slurry collecting plate (15).

9. A ceramic photocuring printing slurry processing system according to claim 1, characterized in that: A connecting flange (16) is provided at the upper end of the slurry collecting cylinder (14); the filtering device comprises a filtering screen (17) and a mounting flange (18); the filtering screen (17) is fixed to the connecting flange (16) at the upper end of the slurry collecting cylinder (14) via the mounting flange (18).

10. A ceramic photocuring printing slurry processing system according to claim 1, characterized in that: The invention also comprises a slurry degassing device (20), wherein the slurry degassing device (20) comprises a slurry collecting cylinder cover plate (21) and a stirring head (22), wherein the slurry collecting cylinder cover plate (21) is provided with a through hole, a vacuum extraction device is provided at the upper end of the slurry collecting cylinder cover plate (21), and the stirring head (22) passes through the slurry collecting cylinder cover plate (21).

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