Forming tabletop structure applied to ceramic slurry 3D printing and printer

Abstract

The utility model belongs to the technical field of ceramic slurry 3D printing, and particularly relates to a forming table top structure applied to ceramic slurry 3D printing and a printer, the forming table top structure comprises a piston plate, and the piston plate comprises a first body, a first sealing area and a second sealing area; the first sealing area and the second sealing area are arranged on the surface of the first body in a surrounding mode. The first sealing part is embedded in the first sealing area; the first sealing part comprises a second body, force resisting blocks and force eliminating grooves, the force resisting blocks are arranged on the second body in an annular array mode, the force eliminating grooves are formed between the adjacent force resisting blocks, through the arrangement of the sealing parts, the problem that flanging is generated due to uneven abrasion in the moving process of the O-shaped sealing ring is solved, and the sealing performance of the O-shaped sealing ring is improved. The flange torque generated by uneven abrasion of the sealing ring in the operation process can be counteracted, leakage caused by the flange phenomenon of the sealing ring is effectively avoided, and the sealing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic slurry 3D printing, and in particular relates to a forming table structure and a printer applied to ceramic slurry 3D printing. Background Art

[0002] In the sinking type light-curing ceramic slurry 3D printing equipment, the molding table needs to move up and down in the molding cylinder. Since the ceramic slurry is fluid, if the installation and coordination between the molding table and the molding cylinder is not sealed, the ceramic slurry will leak to the mechanical transmission parts and other electrical components under the molding surface, which will not only damage the machine parts, cause equipment failure, and waste slurry, but also cause the flatness accuracy of the printing surface slurry to be damaged due to the kinematic viscosity of the slurry itself, and form a thickness difference between the edge area and the center area. Therefore, the sealing structure of the molding surface of the ceramic slurry 3D printing equipment is very critical to the normal operation of the equipment.

[0003] In the current sealing structure scheme, most of them use O-rings for sealing. During the movement of the molded cylinder body after assembly, the O-ring will be squeezed along the cylinder wall to form a circle of contact curved surface. Since the gaps around the piston plate and the cylinder body cannot be consistent and cannot be kept consistent during the movement, and the pressures at different locations are also different, these differences will cause uneven wear of the contact surface between the O-ring and the cylinder body, resulting in differences in the size and direction of the force exerted on the O-ring on the contact surface when the piston plate moves, which will generate a torque to cause it to flanging, resulting in flanging and leakage. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model provides a forming table structure and a printer for 3D printing of ceramic slurry. By setting a double-layer sealing component and its structure, the problem of O-ring flanging due to uneven wear during movement is solved, and the flanging torque generated by uneven wear of the sealing ring during movement is offset, thereby effectively avoiding flanging of the sealing ring and causing leakage, and the sealing effect is good.

[0005] The technical effect to be achieved by the utility model is achieved through the following technical solutions:

[0006] A forming table structure used for ceramic slurry 3D printing, comprising a forming cylinder body, provided with a mounting cavity; a piston plate, connected to the mounting cavity; the piston plate comprising a first body, a first sealing area and a second sealing area, the first sealing area and the second sealing area are both arranged around the surface of the first body, the first sealing area and the second sealing area are arranged in parallel; a first sealing component, the first sealing component is embedded in the first sealing area; and a second sealing component, the second sealing component is embedded in the second sealing area;

[0007] The first sealing component includes a second body, a force resistance block and a force dissipation groove. The force resistance block annular array is arranged on the second body, and the force dissipation groove is arranged between adjacent force resistance blocks.

[0008] In the utility model, the first sealing component and the second sealing component are combined to provide a double-layer sealing property for the molding table structure, thereby greatly reducing slurry leakage.

[0009] By arranging the first sealing component to be embedded in the first sealing area, its resistance block contacts the first sealing area or the inner wall of the installation cavity, and when the piston plate moves, it generates forces of different sizes and directions on the resistance block, and other resistance blocks at different positions in the first sealing area generate corresponding counteracting forces, and through the setting of the force dissipation groove, the force exerted on one resistance block will be buffered by the force dissipation groove and offset by combining with other adjacent resistance blocks, thereby ensuring the stability of the second body, avoiding the flanging phenomenon of the first sealing component caused by flanging torque generated by uneven wear, preventing slurry leakage, and greatly improving the sealing performance.

[0010] Furthermore, the surface of the resistance block is in an arc shape; the number of the resistance blocks is 3-8. The more resistance blocks there are, the stronger the ability to resist forces of different directions and magnitudes. And by setting the surface of the resistance block in an arc shape, it is easy to accept forces in various directions, so that it can effectively buffer until it is offset, and the tolerance is stronger, ensuring that the first sealing component is more stable.

[0011] Furthermore, the bottom surface of the force dissipation groove is an arc surface. Through this arrangement, it can receive forces in various directions and transmit the forces to other resistance blocks, thereby providing transmission and switching of forces in different directions for each resistance block, thereby maintaining the stability of the second body.

[0012] Furthermore, the second sealing component includes a sealing strip, a spring and a pressure plate, wherein the spring is embedded in the sealing strip, and the pressure plate is pressed on one side of the sealing strip. The sealing strip includes a third body and a receiving groove, wherein the receiving groove is arranged in the third body corresponding to the spring. Wherein, the receiving groove is placed toward the upper end of the piston plate. With this arrangement, after the spring is embedded in the receiving groove, the spring is compressed, and the pre-compression amount of the spring in the receiving groove provides a uniform and constant force on the contact surface between the sealing strip and the spring to expand in the direction of the inner wall of the installation cavity and in the direction of the piston plate, thereby ensuring that the sealing strip is tightly embedded between the inner wall of the installation cavity and the piston plate, so that there is no gap between the sealing strip and the molded cylinder body and the piston plate, thereby obtaining a good sealing effect. And the arrangement of the receiving groove facilitates the disassembly and assembly of the spring and subsequent maintenance.

[0013] Furthermore, the surfaces of the third body corresponding to the two sides of the receiving groove are arc-shaped. Through this structural setting, compared with the straight edge, the arc surface contacts the inner wall of the installation cavity, and the arc surface has a certain squeezing force on the inner wall of the installation cavity. The structure can better prevent the leakage of slurry and has a good sealing effect.

[0014] Furthermore, the second sealing area includes a first groove and a second groove arranged in a stepped manner, the sealing strip is embedded in the first groove, and the pressure plate is embedded in the second groove. Through this structural setting, the pressure plate limits the sealing strip to the first groove, which can ensure the stable pre-compression of the spring, and through the support of the pressure plate, the sealing effect is further optimized.

[0015] Furthermore, it also includes a base plate, which is fixedly connected to the upper end of the piston plate; the upper surface of the base plate is set as a molding surface. The molding surface is a square molding surface.

[0016] In the past, when it comes to square molding surfaces, since the tension of the O-ring on the piston plate is mainly distributed at the corners, the O-ring and the piston plate in the straight edge area will not fit closely due to uneven wear, which will cause leakage in the straight edge area. Therefore, the molding surface can only be circular, but the circular molding surface is either smaller than the spot scanning area, and the molding surface is within the inscribed circle of the scanning area, or the molding surface is larger than the scanning area, and the molding surface is within the circumscribed circle of the scanning area. This results in either a waste of the scanning area or a waste of the molding surface, resulting in low utilization.

[0017] By designing the first sealing component, the design range of the molding surface is wider and can meet production needs. The molding surface is designed as a square structure to adapt to the light spot scanning area, so that the light spot scanning area and the molding surface can be used to the maximum extent.

[0018] The printer includes the molding table structure as described above. With this arrangement, the printer has a good sealing effect, preventing the ceramic slurry from leaking onto the mechanical transmission parts and other electrical components below the molding surface, effectively avoiding equipment failure and slurry waste, and improving the durability of the equipment.

[0019] In summary, the utility model has at least the following benefits: through the setting of the double-layer sealing component and its structure, the problem of O-ring flanging due to uneven wear during movement is solved, and the flanging torque generated by uneven wear of the sealing ring during movement can be offset, effectively avoiding the flanging of the sealing ring and causing leakage, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an explosion diagram of Example 1 of the utility model;

[0021] Figure 2 It is a cross-sectional view of Example 1 of the utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0023] Figure 4 This is a cross-sectional view of the first sealing component in Example 1 of the utility model;

[0024] Figure 5 This is a schematic diagram of the assembly structure of the sealing strip and the spring in Example 1 of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the piston plate in Example 1 of the utility model;

[0026] Figure 7 This is a cross-sectional view of the piston plate in Example 1 of the utility model;

[0027] Figure 8 This is a top view of Example 2 of the utility model.

[0028] Markings in the figure: 1. formed cylinder body, 11. mounting cavity; 2. piston plate, 21. first body, 22. first sealing area, 23. second sealing area, 231. first groove, 232. second groove; 3. first sealing component, 31. second body, 32. resistance block, 33. force dissipation groove; 4. second sealing component, 41. sealing strip, 411. third body, 412. receiving groove, 42. spring, 43. pressure plate; 5. substrate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] Please refer to the attached Figure 1-3 The utility model is a molding table structure used for ceramic slurry 3D printing, comprising a molding cylinder 1, provided with a mounting cavity 11; a piston plate 2, connected to the mounting cavity 11; the piston plate 2 comprises a first body 21, a first sealing area 22 and a second sealing area 23, the first sealing area 22 and the second sealing area 23 are both arranged on the surface of the first body 21, and the first sealing area 22 and the second sealing area 23 are arranged in parallel; a first sealing component 3, the first sealing component 3 is embedded in the first sealing area 22; and a second sealing component 4, the second sealing component 4 is embedded in the second sealing area 23;

[0033] Please refer to the attached Figure 4 The first sealing component 3 includes a second body 31 , a force resistance block 32 and a force dissipation groove 33 . The force resistance blocks 32 are arranged in a ring array on the second body 31 , and the force dissipation groove 33 is arranged between adjacent force resistance blocks 32 .

[0034] In the utility model, the first sealing component 3 and the second sealing component 4 are combined to provide a double-layer sealing property for the molding table structure, which can greatly reduce the slurry leakage.

[0035] By setting the first sealing component 3 to be embedded in the first sealing area 22, its resistance block 32 contacts the first sealing area 22 or the inner wall of the installation cavity 11, when the piston plate 2 moves, it generates forces of different sizes and directions on the resistance block 32, and other resistance blocks 32 at different positions in the first sealing area 22 all generate corresponding forces, and through the setting of the force dissipation groove 33, the force exerted on one resistance block 32 will be buffered by the force dissipation groove 33 and combined with other adjacent resistance blocks 32 to offset the force, thereby ensuring the stability of the second body 31, avoiding the flanging phenomenon of the first sealing component 3 caused by the flanging torque generated due to uneven wear, preventing slurry leakage, and greatly improving the sealing performance.

[0036] In one embodiment, the surface of the resistance block 32 is in an arc shape; there are 3-8 resistance blocks 32. The more resistance blocks 32 there are, the stronger their ability to resist forces of different directions and magnitudes is. And by setting the surface of the resistance block 32 in an arc shape, it is easy to receive forces in various directions, so that it can effectively buffer until it is offset, and the tolerance is stronger, ensuring that the first sealing component 3 is more stable.

[0037] In one embodiment, the bottom surface of the force dissipation groove 33 is an arc surface. Through this arrangement, it can receive forces in various directions and transmit the forces to other resistance blocks 32, so as to provide transmission and switching of forces in different directions for each resistance block 32, thereby maintaining the stability of the second body 31.

[0038] Please refer to the attached Figure 5 The second sealing component 4 includes a sealing strip 41, a spring 42 and a pressure plate 43. The spring 42 is embedded in the sealing strip 41, and the pressure plate 43 is pressed on one side of the sealing strip 41. The sealing strip 41 includes a third body 411 and a receiving groove 412. The receiving groove 412 is arranged in the third body 411 corresponding to the spring 42. Among them, the receiving groove 412 is placed toward the upper end of the piston plate 2. Through this arrangement, after the spring 42 is embedded in the receiving groove 412, the spring 42 is compressed. Through the pre-compression amount of the spring 42 in the receiving groove 412, a uniform and constant force is provided on the contact surface between the sealing strip 41 and the spring 42 to expand toward the inner wall of the installation cavity 11 and the piston plate 2, ensuring that the sealing strip 41 is tightly embedded between the inner wall of the installation cavity 11 and the piston plate 2, so that there is no gap between the sealing strip 41 and the molded cylinder body 1 and the piston plate 2, thereby obtaining a good sealing effect. And through the arrangement of the receiving groove 412, the disassembly and subsequent maintenance of the spring 42 are convenient.

[0039] In one embodiment, the surfaces of the third body 411 corresponding to both sides of the receiving groove 412 are arc-shaped. Through this structural setting, compared with the straight edge, the arc surface contacts the inner wall of the installation cavity 11, and the arc surface has a certain squeezing force on the inner wall of the installation cavity 11. The structure can better prevent the leakage of slurry and has a good sealing effect.

[0040] Please refer to the attached Figure 6-7 The second sealing area 23 includes a first groove 231 and a second groove 232 arranged in a stepped manner, the sealing strip 41 is embedded in the first groove 231, and the pressing plate 43 is embedded in the second groove 232. Through this structural setting, the pressing plate 43 limits the sealing strip 41 to the first groove 231, which can ensure the stable pre-compression amount of the spring 42, and the sealing effect is further optimized through the support of the pressing plate 43.

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is: Figure 8 , further comprising a base plate 5, the base plate 5 is fixedly connected to the upper end of the piston plate 2; the upper surface of the base plate 5 is set as a molding surface. The molding surface is a square molding surface.

[0043] In the past, when it comes to square molding surfaces, since the tension of the O-ring on the piston plate 2 is mainly distributed at the corners, the O-ring and the piston plate 2 in the straight edge area will not fit closely due to uneven wear, which will cause leakage in the straight edge area. Therefore, the molding surface can only be circular, but the circular molding surface is either smaller than the spot scanning area, and the molding surface is within the inscribed circle of the scanning area, or the molding surface is larger than the scanning area, and the molding surface is within the circumscribed circle of the scanning area. This results in either a waste of the scanning area or a waste of the molding surface, resulting in low utilization.

[0044] By designing the first sealing component 3, the design range of the molding surface is wider and can meet production requirements. The molding surface is designed as a square structure to adapt to the light spot scanning area, so that the light spot scanning area and the molding surface can be used to the maximum extent.

[0045] Example 3

[0046] The printer includes the above-mentioned molding table structure. Through this arrangement, the printer has a good sealing effect, which prevents the ceramic slurry from leaking onto the mechanical transmission parts and other electrical components under the molding surface, effectively avoids equipment failure and slurry waste, and improves the durability of the equipment.

[0047] In summary, the utility model has at least the following benefits: through the setting of the double-layer sealing component and its structure, the problem of O-ring flanging due to uneven wear during movement is solved, and the flanging torque generated by uneven wear of the sealing ring during movement can be offset, effectively avoiding the flanging of the sealing ring and causing leakage, and the sealing effect is good.

[0048] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0052] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A forming table structure for ceramic slurry 3D printing, characterized in that: include: A forming cylinder body is provided with a mounting cavity; A piston plate connected to the installation cavity; the piston plate comprises a first body, a first sealing area and a second sealing area, the first sealing area and the second sealing area are both arranged around the surface of the first body, and the first sealing area and the second sealing area are arranged in parallel; a first sealing component, wherein the first sealing component is embedded in the first sealing area; as well as a second sealing component, wherein the second sealing component is embedded in the second sealing area; The first sealing component includes a second body, a force resistance block and a force dissipation groove. The force resistance block annular array is arranged on the second body, and the force dissipation groove is arranged between adjacent force resistance blocks.

2. A forming table structure for ceramic slurry 3D printing according to claim 1, characterized in that: The surface of the resistance block is arc-shaped; 3 to 8 resistance blocks are provided.

3. The forming table structure for ceramic slurry 3D printing according to claim 1, characterized in that: The bottom surface of the energy dissipation groove is an arc surface.

4. The forming table structure for ceramic slurry 3D printing according to claim 1, characterized in that: The second sealing component includes a sealing strip, a spring and a pressure plate. The spring is embedded in the sealing strip, and the pressure plate is pressed on one side of the sealing strip.

5. The forming table structure for ceramic slurry 3D printing according to claim 4, characterized in that: The sealing strip includes a third body and a receiving groove, and the receiving groove is arranged in the third body corresponding to the spring.

6. The forming table structure for ceramic slurry 3D printing according to claim 5, characterized in that: The surfaces of the third body corresponding to two sides of the accommodating groove are arc-shaped.

7. The forming table structure for ceramic slurry 3D printing according to claim 4, characterized in that: The second sealing area includes a first groove and a second groove which are arranged in a stepped manner, the sealing strip is embedded in the first groove, and the pressing plate is embedded in the second groove.

8. The forming table structure for ceramic slurry 3D printing according to claim 1, characterized in that: It also includes a base plate, which is fixedly connected to the upper end of the piston plate; the upper surface of the base plate is set as a molding surface.

9. The forming table structure for ceramic slurry 3D printing according to claim 8, characterized in that: The molding surface is a square molding surface.

10. A printer, characterized in that It comprises a forming table top structure as described in any one of claims 1 to 9.

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