Printing panel and 3D printer

Abstract

The utility model relates to the field of 3D printing, in particular to a printing panel and a 3D printer, and the printing panel comprises a supporting plate part which comprises a first surface and a second surface which are oppositely arranged; the first dielectric layer is attached to the first surface; the second dielectric layer is attached to the second surface; wherein the first dielectric layer and the second dielectric layer are made of the same material. The service life of the printing panel can be effectively prolonged, and the printing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of 3D printing, and in particular to a printing panel and a 3D printer. Background Art

[0002] Fused deposition modeling (FDM) technology, also known as fused deposition modeling, is one of the main 3D printing technologies. In this technology, the consumable is heated and melted to a molten state, and then the molten consumable is extruded from the nozzle assembly and deposited on the printing panel or the previously cured consumable layer. When the temperature is lower than the curing temperature of the consumable, the consumable begins to solidify and form, and finally a model entity is printed. Generally, a coating is formed on the upper surface of the printing panel so that the molten consumable can be better adhered to the printing plane. However, after long-term use, the performance of the coating on the printing panel will gradually decline until the printing panel can no longer be used, and only the entire printing panel can be replaced to continue printing. Summary of the Utility Model

[0003] Embodiments of this application provide a printing panel and a 3D printer, which can effectively increase the service life of the printing panel and thus reduce the printing cost.

[0004] In a first aspect, the printing panel provided by the embodiments of this application includes:

[0005] A support plate portion including a first surface and a second surface disposed opposite to each other;

[0006] A first dielectric layer attached to the first surface; and

[0007] A second dielectric layer attached to the second surface;

[0008] Wherein, the first dielectric layer and the second dielectric layer are of the same material.

[0009] In some embodiments, the first dielectric layer and the second dielectric layer are respectively thermosetting material layers.

[0010] In some embodiments, the thermosetting material layer includes epoxy resin.

[0011] In some embodiments, the first dielectric layer and the second dielectric layer are respectively thermoplastic material layers.

[0012] In some embodiments, the thermoplastic material layer includes at least one of polyethylene, polyvinyl alcohol, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, polyoxymethylene, polyethylene terephthalate, polylactic acid, polyetherimide, polytetrafluoroethylene, polyimide, thermoplastic polyurethane, and polymethyl methacrylate.

[0013] In some embodiments, the first dielectric layer is polyvinyl alcohol, the second dielectric layer is polyetherimide, the first dielectric layer has a smooth structure, and the second dielectric layer has a textured matte structure.

[0014] In some embodiments, the first dielectric layer and the second dielectric layer are respectively spray-formed on the support plate portion; alternatively, the first dielectric layer and the second dielectric layer are respectively pasted on the support plate portion; alternatively, the first dielectric layer is spray-formed on the support plate portion, and the second dielectric layer is pasted on the support plate portion; alternatively, the first dielectric layer is pasted on the support plate portion, and the second dielectric layer is spray-formed on the support plate portion.

[0015] In some embodiments, the support plate portion is a steel support plate portion, or the support plate portion is a magnetic support plate portion.

[0016] In a second aspect, the 3D printer provided by the embodiments of the present application includes a nozzle assembly, a hot bed assembly, and the printing panel provided in any of the above embodiments;

[0017] The printing panel is detachably disposed on the hot bed assembly, and the hot bed assembly is used to carry and heat the printing panel;

[0018] The nozzle assembly is located on a side of the printing panel away from the hot bed assembly, and the nozzle assembly and the printing panel can be selectively close to or away from each other. The nozzle assembly is used to print a model entity on the surface of the first dielectric layer or the surface of the second dielectric layer.

[0019] In some embodiments, the hot bed assembly is provided with a first positioning protrusion and a second positioning protrusion, and the printing panel is provided with a first positioning groove and a second positioning groove. The first positioning protrusion cooperates with the first positioning groove, and the second positioning protrusion cooperates with the second positioning groove to align the printing panel and the hot bed assembly.

[0020] In some embodiments, the 3D printer further includes a wiping block, the wiping block is disposed on the hot bed assembly, and the wiping block, the first positioning protrusion, and the second positioning protrusion are located on the same side of the hot bed assembly.

[0021] In some embodiments, the support plate portion is magnetically connected to the hot bed assembly, and the printing panel further includes a first force application portion and a second force application portion, and the first force application portion and the second force application portion protrude from the periphery of the support plate portion.

[0022] Compared with the prior art, the beneficial features of the embodiments of the present application are as follows: The printing panel and the 3D printer include a support plate portion, a first medium layer, and a second medium layer. The support plate portion includes a first surface and a second surface that are oppositely arranged in a first direction. The first medium layer and the second medium layer are respectively attached to the first surface and the second surface of the support plate portion, and the first medium layer and the second medium layer are made of the same material. When the performance of the first medium layer deteriorates, the printing panel can be flipped, and the second medium layer can be used to carry the model entity without replacing the entire printing panel. This is not only convenient to use but also can effectively increase the service life of the printing panel and reduce the printing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the printing panel according to the embodiment of the present application;

[0024] Figure 2 It is a schematic structural diagram of the 3D printer according to the embodiment of the present application;

[0025] Wherein: 100 - 3D printer (10 - printing panel (11 - support plate portion (111 - first surface, 112 - second surface), 12 - first medium layer, 13 - second medium layer, 14 - first positioning groove, 15 - second positioning groove, 16 - first force - applying portion, 17 - second force - applying portion), 20 - hot bed assembly (21 - first positioning projection, 22 - second positioning projection), 30 - wiping block). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present application more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0029] Please refer to Figure 1The printed panel 10 of the embodiment of the present application includes a support plate portion 11, a first dielectric layer 12, and a second dielectric layer 13. The support plate portion 11 includes a first surface 111 and a second surface 112 arranged opposite to each other in a first direction. The first dielectric layer 12 is attached to the first surface 111 of the support plate portion 11, and the second dielectric layer 13 is attached to the second surface 112 of the support plate portion 11. The first dielectric layer 12 and the second dielectric layer 13 are made of the same material.

[0030] In the embodiment of the present application, the printing panel 10, the first medium layer 12 and the second medium layer 13 can all be used to receive the printed model entity. When the performance of one of the medium layers deteriorates, the printing panel 10 can be turned over and the other medium layer can be used without replacing the entire printing panel 10. When both medium layers cannot be used, the printing panel 10 can be replaced, which is not only convenient, but also can effectively increase the service life of the printing panel 10 and reduce printing costs.

[0031] As an example, when printing, the first medium layer 12 of the print panel 10 can be oriented toward the nozzle assembly to receive the model entity. When the performance of the first medium layer 12 deteriorates, the print panel 10 can be flipped over and the second medium layer 13 can be used to receive the model entity. There is no need to replace the entire print panel 10. When the performance of the second medium layer 13 deteriorates to the point of being unusable, the print panel 10 can be replaced. This is not only convenient to use, but can also effectively increase the service life of the print panel 10 and reduce printing costs.

[0032] It is understandable that in this embodiment, the first medium layer 12 and the second medium layer 13 are completely identical, and the first medium layer 12 or the second medium layer 13 can be selected for printing first according to actual needs, which is not limited here.

[0033] In some preferred embodiments, the first medium layer 12 is a thermosetting material layer. Accordingly, the second medium layer 13 is also a thermosetting material layer. When the first medium layer 12 and the second medium layer 13 are thermosetting material layers, the printing panel 10 can be suitable for printing thermoplastic consumables with a high glass transition temperature.

[0034] As an example, the thermosetting material layer may include epoxy resin. Epoxy resin is a known high molecular polymer with a molecular formula of (C 11 H 12 O3) n, refers to a general term for a class of polymers containing more than two epoxy groups in the molecule. It is a condensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of the epoxy group, it can be opened with a variety of compounds containing active hydrogen, cured and cross-linked to form a network structure, so it is a thermosetting resin. The first dielectric layer 12 and the second dielectric layer 13 including epoxy resin can better form surface contact with thermoplastic consumables with a higher glass transition temperature, so that the molten consumables can be better deposited and formed in the first dielectric layer 12 and the second dielectric layer 13, thereby improving the printing quality. In addition, epoxy resin coatings can also be used as anti-corrosion paints, metal primers, insulating paints, etc., which can effectively prevent the support plate portion 11 from rusting and improve the quality of the printed solid model.

[0035] It should be noted that, in other embodiments, the thermosetting material layer may also include other materials, which will not be described in detail here.

[0036] In some preferred embodiments, the first medium layer 12 is a thermoplastic material layer. Accordingly, the second medium layer 13 is also a thermoplastic material layer. When the first medium layer 12 and the second medium layer 13 are thermoplastic material layers, the printing panel 10 can be suitable for printing thermoplastic consumables with a low glass transition temperature.

[0037] As an example, the thermoplastic material layer may include at least one of polyethylene (PE), polyvinyl alcohol (PVA), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polycarbonate (PC), polyformaldehyde (POM), polyethylene terephthalate (PET or PETE), polylactic acid (PLA), polyetherimide (PEI), polytetrafluoroethylene (PTFE), polyimide (PI), thermoplastic polyurethanes (TPU), and polymethyl methacrylate (PMMA).

[0038] Among them, polyethylene is a known material. Polyethylene is a thermoplastic resin obtained by the polymerization of ethylene monomers. Polyethylene has excellent low-temperature resistance and good chemical stability. Since the polymer molecules are connected by carbon-carbon single bonds, it can resist the erosion of most acids and alkalis, is insoluble in common solvents at room temperature, has little water absorption, and has excellent electrical insulation.

[0039] Polyvinyl alcohol is a water-soluble polymer and is generally considered a thermoplastic material. This means that it softens when heated and hardens when cooled, and this softening and hardening process can be repeated. This property of polyvinyl alcohol makes it very useful in many applications, such as in the textile, paper-making, and water-treatment industries.

[0040] Polypropylene is a known material. Polypropylene is a polymer formed by the addition polymerization of propylene. The chemical formula is (C3H6) n , and it can resist the corrosion of acids, alkalis, salt solutions, and a variety of organic solvents below 80°C. Polypropylene is a thermoplastic synthetic resin with excellent properties. It is a colorless, translucent thermoplastic lightweight general-purpose plastic, with chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good high-wear resistance processing properties, etc.

[0041] Polyvinyl chloride is a known material. Polyvinyl chloride is a polymer formed by the polymerization of vinyl chloride monomer (VCM) under the action of initiators such as peroxides and azo compounds or under the action of light and heat according to the free radical polymerization reaction mechanism.

[0042] Polystyrene is a known material. Polystyrene is a polymer synthesized by the free radical addition polymerization of styrene monomers, and the chemical formula is (C8H8) n . Polystyrene is a colorless, transparent thermoplastic with a glass transition temperature above 100°C.

[0043] Polycarbonate is a known material. Polycarbonate is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into various types such as aliphatic, aromatic, and aliphatic-aromatic. Polycarbonate not only has high transparency but also strong impact resistance.

[0044] Polyoxymethylene is a known thermoplastic crystalline high molecular polymer, with relatively high hardness and good wear resistance.

[0045] Polyethylene terephthalate is a known material, and the chemical formula is (C 10 H8O4) n, it is prepared by the transesterification of dimethyl terephthalate and ethylene glycol or the esterification of terephthalic acid and ethylene glycol to synthesize bis(2-hydroxyethyl) terephthalate first, and then by polycondensation reaction. Polyethylene terephthalate has excellent physical and mechanical properties in a relatively wide temperature range, the service temperature can reach 120 °C, and it has excellent electrical insulation.

[0046] Polylactic acid, also known as poly(lactic acid), is a known polyester polymer obtained by polymerizing lactic acid as the main raw material. It is a biodegradable material with good solvent resistance.

[0047] Polyetherimide is a known high-performance plastic. Polyetherimide is an engineering plastic made of amorphous polyetherimide, with strong stability, a wide range of chemical resistance, good flame retardancy, good electrical insulation, high strength, and high rigidity.

[0048] Polytetrafluoroethylene is a known material, a high molecular polymer obtained by polymerizing tetrafluoroethylene as a monomer, with the chemical formula (C2F4) n , with excellent heat resistance and cold resistance, and can be used for a long time at -180 to 260 °C. Polytetrafluoroethylene has the characteristics of being resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. At the same time, polytetrafluoroethylene has the characteristics of high temperature resistance and extremely low friction coefficient.

[0049] Polyimide is a known material, a type of polymer with an imide ring (-CO-NR-CO-) in the main chain. It has good comprehensive performance, the long-term service temperature range is -200 to 300 °C, some have no obvious melting point, and it also has high insulation performance.

[0050] Thermoplastic polyurethane is a known elastic plastic. It not only has high elasticity and good wear resistance, but also can withstand large tensile and compressive forces, remains flexible at lower temperatures, and also has a certain high temperature resistance.

[0051] Polymethyl methacrylate is a known high molecular polymer, also known as acrylic or plexiglass. It not only has the advantages of high transparency and easy machining, but also has a low cost.

[0052] In this embodiment, the thermoplastic material layer includes at least one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, polyoxymethylene, polyethylene terephthalate, polylactic acid, polyetherimide, polytetrafluoroethylene, polyimide, thermoplastic polyurethane, and polymethyl methacrylate, so that the first dielectric layer 12 and the second dielectric layer 13 can better form a surface contact with the thermoplastic consumable with a lower glass transition temperature, so that the molten consumable can be better deposited and formed on the first dielectric layer 12 and the second dielectric layer 13, improving the printing quality.

[0053] It should be noted that in other embodiments, the thermoplastic material layer may also include other materials, which will not be elaborated here.

[0054] In some embodiments, the first medium layer 12 may be a smooth structure, and the smooth first medium layer 12 is applicable to printing model entities with smooth surfaces. In other embodiments, the first medium layer 12 may be a textured matte structure, and the textured matte first medium layer 12 is applicable to printing model entities with textured surfaces.

[0055] Similarly, the second medium layer 13 may also be a smooth structure to be applicable to printing model entities with smooth surfaces. Or, the second medium layer 13 may be a textured matte structure to be applicable to printing model entities with textured surfaces.

[0056] It should be noted that the structures of the first medium layer 12 and the second medium layer 13 may be the same or different. Exemplarily, both the first medium layer 12 and the second medium layer 13 may be smooth structures. Or, both the first medium layer 12 and the second medium layer 13 may be textured matte structures. Or, one of the first medium layer 12 and the second medium layer 13 is a smooth structure and the other is a textured matte structure.

[0057] As an alternative embodiment, the first medium layer 12 is polyvinyl alcohol and the second medium layer 13 is polyetherimide. And, the first medium layer 12 is a smooth structure and the second medium layer 13 is a textured matte structure.

[0058] In some embodiments, the first medium layer 12 may be spray-formed on the first surface 111 of the support plate portion 11, which can make the first medium layer 12 be firmly fixed on the support plate portion 11, improving the product quality and service life of the printing panel 10.

[0059] Exemplarily, the first medium layer 12 is a thermosetting material layer, and the first medium layer 12 can be formed on the first surface 111 of the support plate portion 11 by spraying, which can make the first medium layer 12 be firmly fixed on the support plate portion 11. After the first medium layer 12 is spray-formed on the first surface 111 of the support plate portion 11, baking can also be used to quickly fix the first medium layer 12 on the first surface 111 of the support plate portion 11, which can not only improve production efficiency but also further make the first medium layer 12 be more firmly fixed on the support plate portion 11.

[0060] In other embodiments, the first medium layer 12 may be pasted on the first surface 111 of the support plate portion 11, which is convenient for installation and more environmentally friendly.

[0061] Exemplarily, the first dielectric layer 12 is a thermoplastic material layer, and the first dielectric layer 12 can be formed on the first surface 111 of the support plate portion 11 by pasting. Without other curing operations, the first dielectric layer 12 can be quickly and firmly fixed on the support plate portion 11, which is not only convenient and environmentally friendly, but also improves production efficiency.

[0062] It can be understood that when the first dielectric layer 12 is a thermoplastic material layer, the first dielectric layer 12 can also be formed on the first surface 111 of the support plate portion 11 by spraying. When the first dielectric layer 12 is a thermosetting material layer, the first dielectric layer 12 can also be formed on the first surface 111 of the support plate portion 11 by pasting. It can be selected according to actual needs and will not be elaborated here.

[0063] Similarly, in some embodiments, the second dielectric layer 13 can be spray-formed on the second surface 112 of the support plate portion 11, which can make the second dielectric layer 13 firmly fixed on the support plate portion 11, improving the product quality and service life of the printing panel 10. In other embodiments, the second dielectric layer 13 can be pasted on the second surface 112 of the support plate portion 11, which is convenient for installation and more environmentally friendly.

[0064] It should be noted that the first dielectric layer 12 and the second dielectric layer 13 can be arranged on the support plate portion 11 in the same or different ways. In addition to spraying and pasting, the first dielectric layer 12 and / or the second dielectric layer 13 can also be arranged on the support plate portion 11 in other ways, which can be set according to actual needs and will not be elaborated here.

[0065] In some preferred embodiments, the support plate portion 11 can be made of steel material, that is to say, the support plate portion 11 can be a steel support plate portion 11. Using a steel support plate portion 11 can provide sufficient strength and stiffness for the printing panel 10, enabling the printing panel 10 to more effectively support the printed model entity and avoiding damage to the model caused by deformation of the printing panel 10. This not only improves the service life of the printing panel 10, but also improves the printing quality.

[0066] In some preferred embodiments, the support plate portion 11 can also be a magnetic support plate portion 11, that is to say, the support plate portion 11 has magnetism and can generate sufficient adsorption force to adsorb on the hot bed assembly 20 of the 3D printer 100. It is not only firmly fixed, but also convenient for assembly, improving the printing efficiency.

[0067] Exemplarily, the support plate portion 11 can include hard magnetic material, and the hard magnetic material has a high magnetic energy product, making the printing panel 10 more firmly adsorbed on the hot bed assembly 20.

[0068] Please refer toFigure 2 , the 3D printer 100 according to the embodiment of the present application includes any one of the above-mentioned printing panels 10.

[0069] In the 3D printer 100 according to the embodiment of the present application, both the first medium layer 12 and the second medium layer 13 of the printing panel 10 can be used to carry the printed model entity. When the performance of one of the medium layers deteriorates, the printing panel 10 can be flipped to use the other medium layer without replacing the entire printing panel 10. When both medium layers are no longer usable, then replace the printing panel 10, which is not only convenient to use, but also can effectively increase the service life of the printing panel 10 and reduce the printing cost.

[0070] In some preferred embodiments, the 3D printer 100 may further include a nozzle assembly (not shown in the figure) and a hot bed assembly 20, please refer to Figure 2 . The printing panel 10 is detachably disposed on the hot bed assembly 20, and the hot bed assembly 20 is used to carry and heat the printing panel 10. The nozzle assembly is located at one end of the printing panel 10 in the first direction. Specifically, the nozzle assembly is located on the side of the printing panel 10 facing away from the hot bed assembly 20. The nozzle assembly and the printing panel 10 can be selectively close to or away from each other, and the nozzle assembly is used to print the model entity on the surface of the first medium layer 12 or the second medium layer 13.

[0071] As an example, the first direction may be the up and down direction, and the nozzle assembly may be located above the printing panel.

[0072] In this embodiment, the printing panel 10 is detachably disposed on the hot bed assembly 20, which is convenient for flipping the printing panel 10 to make the first medium layer 12 or the second medium layer 13 face the nozzle assembly, thereby carrying the printed model entity, which is convenient to use and improves the service life of the printing panel 10.

[0073] As an example, during printing, the first medium layer 12 of the printing panel 10 can be first oriented towards the nozzle assembly to carry the model entity. When the performance of the first medium layer 12 deteriorates, the printing panel 10 can be flipped to use the second medium layer 13 to carry the model entity without replacing the entire printing panel 10. When the performance of the second medium layer 13 deteriorates to the point where it is no longer usable, then replace the printing panel 10, which is not only convenient to use, but also can effectively increase the service life of the printing panel 10 and reduce the printing cost.

[0074] In some embodiments, the printing panel 10 can be detachably disposed on the hot bed assembly 20 by magnetic adsorption, which is not only convenient for loading and unloading, improves the printing efficiency, but also can better protect the printing panel 10 and the hot bed assembly 20, and can avoid damage to the printing panel 10 and the hot bed assembly 20 caused by loading and unloading threaded fasteners.

[0075] Exemplarily, at least one of the printing panel 10 and the hot bed assembly 20 includes a magnetic material, so that the printing panel 10 can be detachably disposed on the hot bed assembly 20 by magnetic adsorption.

[0076] As an alternative embodiment, the magnetic material may be a hard magnetic material. The hard magnetic material has a high magnetic energy product, enabling the printing panel 10 to be more firmly adsorbed on the hot bed assembly 20.

[0077] It can be understood that in other embodiments, the printing panel 10 can also be detachably disposed on the hot bed assembly 20 by other means, which can be set according to the actual situation and will not be elaborated here.

[0078] In some embodiments, the nozzle assembly and the printing panel 10 can be selectively moved closer or farther away from each other. This can be achieved by: keeping the nozzle assembly stationary and moving the printing panel 10 in the first direction to approach or move away.

[0079] Exemplarily, with the nozzle assembly stationary, the printing panel 10 can rise to approach the nozzle assembly, and the printing panel 10 can also descend to move away from the nozzle assembly.

[0080] In some embodiments, the nozzle assembly and the printing panel 10 can be selectively moved closer or farther away from each other. This can be achieved by: keeping the printing panel 10 stationary and moving the nozzle assembly in the first direction to approach or move away.

[0081] Exemplarily, with the printing panel 10 stationary, the nozzle assembly can descend to approach the printing panel 10, and the nozzle assembly can also rise to move away from the printing panel 10.

[0082] In some embodiments, the nozzle assembly and the printing panel 10 can be selectively moved closer or farther away from each other. This can be achieved by: both the printing panel 10 and the nozzle assembly are movable to approach or move away from each other.

[0083] Exemplarily, the printing panel 10 rises and the nozzle assembly descends to approach each other. Or, the printing panel 10 descends and the nozzle assembly rises to move away from each other.

[0084] In some preferred embodiments, please refer to Figure 2 , the hot bed assembly 20 is provided with a first positioning protrusion 21 and a second positioning protrusion 22, and the printing panel 10 is provided with a first positioning groove 14 and a second positioning groove 15. The first positioning protrusion 21 cooperates with the first positioning groove 14, and the second positioning protrusion 22 cooperates with the second positioning groove 15 to align the printing panel 10 and the hot bed assembly 20, enabling the printing panel 10 to be quickly and effectively positioned on the hot bed assembly 20, thereby improving the assembly efficiency and assembly accuracy.

[0085] As an example, please refer to Figure 2 , the first positioning groove 14 and the second positioning groove 15 can be respectively formed at one end of the printing panel 10 in the second direction, where the second direction is perpendicular to the first direction, and the first positioning groove 14 and the second positioning groove 15 respectively penetrate through the printing panel 10 along the first direction, without interfering with 3D printing, not affecting the forming of the model entity, and being convenient for assembly and use, further improving the assembly efficiency.

[0086] In some preferred embodiments, please refer to Figure 2 , the 3D printer 100 further includes a wiping block 30, and the wiping block 30 is detachably arranged on the hot bed assembly 20. The wiping block 30 can be used to wipe off the excess consumables on the nozzle assembly, which is convenient for use. Moreover, the wiping block 30 is detachably arranged on the hot bed assembly 20 and is not easy to be lost. And, the wiping block 30, the first positioning protrusion 21 and the second positioning protrusion 22 are located on the same side of the hot bed assembly 20, which can avoid interference between the wiping block 30 and the printing panel 10, is more convenient for assembling the printing panel 10 onto the hot bed assembly 20, and is also more convenient for taking and placing the wiping block 30.

[0087] As an example, a plug-in slot can be arranged on the hot bed assembly 20, and the wiping block 30 is detachably inserted into the plug-in slot, which is convenient for use and taking and placing. It can be understood that in other embodiments, the wiping block 30 can also be detachably connected to the hot bed assembly 20 in other ways, which will not be elaborated here.

[0088] In some preferred embodiments, the support plate portion 11 and the hot bed assembly 20 are magnetically connected. Please refer to Figure 2 , the printing panel 10 further includes a first force application portion 16 and a second force application portion 17, and the first force application portion 16 and the second force application portion 17 protrude from the peripheral side of the support plate portion 11. Arranging the first force application portion 16 and the second force application portion 17 on the support plate portion 11 can facilitate the user to apply force to remove the printing panel 10 from the hot bed assembly 20.

[0089] It can be understood that in some embodiments, the first force application portion 16 and the second force application portion 17 can be Figure 2 the protruding structures as shown. In some other embodiments, the first force application portion 16 and the second force application portion 17 can also be other structures protruding from the peripheral side of the support plate portion 11. For example, the first force application portion 16 and the second force application portion 17 can also be handles or protruding structures of other shapes, which will not be elaborated here. In addition, the first force application portion 16 and the second force application portion 17 can be arranged on the same side of the support plate portion 11 as shown in Figure 2 , or the first force application portion 16 and the second force application portion 17 can also be arranged on different sides of the support plate portion 11, which will not be elaborated here.

[0090] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0091] The above embodiments only express the preferred embodiments of the present application, and the description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A printing panel, characterized in that, include: The supporting plate portion comprises a first surface and a second surface which are arranged opposite to each other; A first dielectric layer, laminated on the first surface; and A second dielectric layer is laminated on the second surface; Wherein, the first dielectric layer and the second dielectric layer are made of the same material.

2. The printing panel according to claim 1, wherein The first dielectric layer and the second dielectric layer are respectively thermosetting material layers.

3. The printing panel according to claim 1, wherein, The first medium layer and the second medium layer are thermoplastic material layers respectively.

4. The printing panel according to claim 3, wherein, The first medium layer is polyvinyl alcohol, the second medium layer is polyetherimide, the first medium layer is a smooth structure, and the second medium layer is a textured frosted structure.

5. The printing panel according to claim 1, wherein The first dielectric layer and the second dielectric layer are formed on the support plate portion by spraying respectively; or, the first dielectric layer and the second dielectric layer are respectively pasted on the support plate portion; or, the first dielectric layer is formed on the support plate portion by spraying, and the second dielectric layer is pasted on the support plate portion; or, the first dielectric layer is pasted on the support plate portion, and the second dielectric layer is formed on the support plate portion by spraying.

6. The printing panel according to claim 1, characterized in that, The support plate portion is a steel support plate portion, or the support plate portion is a magnetic support plate portion.

7. A 3D printer, characterized in that, It comprises a nozzle assembly, a hot bed assembly and a printing panel as claimed in any one of claims 1 to 6; The printing panel is detachably arranged on the heating bed assembly, and the heating bed assembly is used to carry and heat the printing panel; The nozzle assembly is located on a side of the printing panel away from the hot bed assembly. The nozzle assembly and the printing panel can be selectively moved closer or farther away from each other. The nozzle assembly is used to print a model entity on a surface of the first medium layer or a surface of the second medium layer.

8. The 3D printer according to claim 7, wherein, The heated bed assembly is provided with a first positioning protrusion and a second positioning protrusion, and the printing panel is provided with a first positioning groove and a second positioning groove, the first positioning protrusion cooperates with the first positioning groove, and the second positioning protrusion cooperates with the second positioning groove, so as to align the printing panel and the heated bed assembly.

9. The 3D printer according to claim 8, wherein, The 3D printer further includes a wiper block, which is disposed on the heated bed assembly, and the wiper block, the first positioning protrusion, and the second positioning protrusion are located on the same side of the heated bed assembly.

10. The 3D printer according to claim 7, characterized in that, The support plate portion is magnetically connected to the heated bed assembly, and the printing panel further includes a first force applying portion and a second force applying portion, wherein the first force applying portion and the second force applying portion extend and protrude from the peripheral side of the support plate portion.

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