TWI705886B - Container for 3D printing device and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a container for a 3D printing device used in a light-cured three-dimensional modeling device and a manufacturing method thereof. The container for the 3D printing device is a container composed of a surrounding frame and a bottom substrate; wherein the bottom substrate is provided with a container A first opening; a base film is closely attached to the bottom surface of the base substrate; the area of the base film corresponding to the position of the first opening is the light-transmitting portion, and the area other than the light-transmitting portion is the base substrate The bonded joint; and at least one of the upper surface and the lower surface of the base film has hydrophobic and oleophobic properties, and the surface of the base film with hydrophobic and oleophobic properties faces the inner side of the container. In this way, a flexible light-transmitting film is used to replace the smooth bottom surface of a container for a 3D printing device used for molding objects, so as to improve the problem of instability in the release process of the prior art.

Description

Container for 3D printing device and manufacturing method thereof

The present invention relates to a 3D (three-dimensional) printing molding technology, in particular to a light-curing material container used in a light-curing three-dimensional modeling device for manufacturing three-dimensional objects and a manufacturing method thereof.

In recent years, with the increasing development of science and technology, many different methods of building physical three dimensional (3D) models using additive manufacturing technology such as layer-by-layer model building have been proposed. Generally speaking, additive manufacturing technology converts the design data of a 3D model constructed by software such as computer aided design (CAD) into multiple thin (quasi-two-dimensional) cross-sectional layers that are continuously stacked. At the same time, many technical methods that can form multiple thin cross-sectional layers have gradually been proposed. For example, the printing module of the printing device can usually move above the base along the XY plane based on the spatial coordinates XYZ constructed by the design data of the 3D model, so that the construction material forms the correct cross-sectional layer shape.

The rapid prototyping technologies used today are also different. The rapid prototyping technologies currently used in the industry mainly include the following technologies: Color-Jet Printing (CJP, or Binder Jetting) technology, fused deposition Molding (Fused Deposition Modeling, FDM) technology, laser sintered liquid resin molding (Stereo Lithography Apparatus, SLA) technology, UV-curable liquid resin molding (Multi-Jet Modeling, MJM) technology, or laser sintered solid powder molding ( Selective Laser Sintering, SLS) technology and so on, but not limited to this.

Both stereoscopic image scanning technology and stereoscopic display technology are the focus of current 3D (Three-dimensional) printing technology. The object to be printed is scanned, and appropriate three-dimensional image data is generated as the image source for 3D printing. With the aid of a printer, the content of the three-dimensional image is printed out as a physical 3D model. Therefore, the technology of scanning objects and generating 3D images will be related to whether accurate 3D models can be printed. Take the stereolithography device for stereolithography as an example. It is a technology of curing construction materials through a light source to form a three-dimensional object. The printing module is suitable for being immersed in the liquid molding material contained in the resin tank, and the light source mold The group irradiates the liquid molding material as the construction material on the XY plane so that the liquid molding material is solidified and stacked on a moving platform. In this way, by moving the moving platform layer by layer along the axis Z, the liquid molding material can be solidified layer by layer and stacked into a solid object. It should be noted that when the light source is disposed under the resin tank, the printed object that has just been cured by the light source will adhere to the bottom of the resin tank. In order to enable the liquid molding material to continue to solidify and stack layer by layer, the three-dimensional printing device needs to swing the resin tank to separate the three-dimensional object being printed from the bottom of the resin tank.

The resin tank is a container for containing the light-curing resin, and the projection light projects the light pattern upward to the transparent bottom of the housing frame from below to solidify the liquid light-curing material in the housing frame. However, due to the Van der Waals dipole force, chemical bonding force and attractive force, adhesion occurs between the photocurable layer and the accommodating frame, which causes the problem of difficulty in drawing the photocurable layer by the building platform. The release force is positively related to the above-mentioned force and the area of the photocurable layer, and is one of the most important limiting factors for high-precision printing. If the release force is too large, it is easy to cause the solidified three-dimensional object to be hardly separated during the release process and cause damage, resulting in poor demolding effect, and even causing the resin tank to be scrapped due to excessive deformation.

In order to solve the above problems, some techniques to improve the adhesion phenomenon are to coat the bottom of the housing frame with an anti-adhesion film material, such as Teflon or silicone, to prevent adhesion of the photocurable layer In the housing frame, this method needs to consider the flatness and uniformity of the coating, and when the thickness of the anti-sticking film increases, the transmittance of the bottom of the groove may be reduced, which affects the quality of the three-dimensional printing; When the anti-sticking film loses its effect, the entire resin tank is scrapped, and a new resin tank needs to be purchased or made.

In addition, there is a technology to fix the Teflon film to the bottom of the resin tank by screws or clamps, which can help reduce the separation force between the three-dimensional object and the bottom of the tank, and is convenient Replacement films, such as the resin tank for DLP light-curing 3D printers disclosed in China Invention Patent Publication CN 105365218 B, and the resin tank for DLP light-curing 3D printers disclosed in China Patent Publication CN 107336438A that can quickly change the film and The assembly method; however, the above-mentioned patented technology requires the use of complicated and trivial fixing elements when fixing the film, which not only takes time for assembly, but also increases the overall volume of the printing device.

Therefore, how to improve the above problems and improve the convenience of assembling the resin tank and separating the cured product from the resin tank, the applicant, in view of the deficiencies in the prior art, after careful experimentation and research, and the spirit of perseverance, finally The present invention was conceived to solve the shortcomings of the prior art.

In view of this, the present invention provides a container for a 3D printing device and a manufacturing method thereof. A flexible light-transmitting film is used to replace the glossy bottom surface of the container for a 3D printing device for molding objects, so as to improve the release of the prior art The problem of unstable process.

In order to achieve the purpose of the present invention, the present invention provides a method for manufacturing a container for a 3D printing device, which includes performing the following processing steps on a container composed of a surrounding frame and a bottom substrate: (a) on the bottom The substrate has a first opening; (b) a base film is closely attached to the bottom surface of the bottom substrate to seal the first opening.

According to an embodiment of the present invention, the area of the base film corresponding to the position of the first opening is a light-transmitting portion, and the area other than the light-transmitting portion is a bonding portion for bonding with the base substrate.

According to an embodiment of the present invention, at least one of the upper surface and the lower surface of the base film has hydrophobic and oleophobic properties, and the surface of the base film with hydrophobic and oleophobic properties faces the inner side of the container.

According to an embodiment of the present invention, the base film is selected from polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA), fluorinated ethylene propylene copolymer (FEP), and It is formed of at least one material selected from the group consisting of a copolymer of ethylene and tetrafluoroethylene (ETFE).

In addition, according to another embodiment of the present invention, a method for manufacturing a container for a 3D printing device can be provided, which includes performing the following processing steps on a container composed of a surrounding frame and a bottom substrate: (a) Opening a first opening in the bottom substrate; (b) bonding a functional light-transmitting film and a covering film with a second opening, so that the functional light-transmitting film seals the second opening, thereby forming a base film; (c) The base film is tightly attached to the outer bottom surface of the base substrate in such a way that the center of the first opening and the second opening overlap, thereby sealing the first opening to produce a container for a 3D printing device.

According to an embodiment of the present invention, at least one of the upper surface and the lower surface of the functional transparent film is hydrophobic and oleophobic, and the hydrophobic and oleophobic surface of the functional transparent film faces the inner side of the container.

According to an embodiment of the present invention, the first opening and the second opening have corresponding shapes, and the area of the first opening is equal to, smaller than, or greater than the area of the second opening.

According to an embodiment of the present invention, the functional light-transmitting film in the above manufacturing method is selected to contain at least polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA), fluorinated Ethylene propylene copolymer (FEP), ethylene and tetrafluoroethylene copolymer (ETFE), and a combination of any one of materials.

According to an embodiment of the present invention, the bonding of the base substrate and the base film in the above-mentioned manufacturing method is achieved by an adhesive or a hot pressing process.

According to an embodiment of the present invention, in the above-mentioned manufacturing method, the bonding of the covering film and the functional light-transmitting film is achieved by an adhesive or a hot pressing process.

In addition, the present invention also provides a container for a 3D printing device, which includes: a container constituted by a surrounding frame and a bottom substrate; wherein the bottom substrate is opened with a first opening; There is a base film; the area of the base film corresponding to the position of the first opening is the light-transmitting portion, and the area other than the light-transmitting portion is the bonding portion attached to the base substrate; and the upper surface of the base film and At least one of the lower surfaces has hydrophobic and oleophobic properties, and the hydrophobic and oleophobic surface of the base film faces the inner side of the container.

According to an embodiment of the present invention, the container base is formed by bonding a functional light-transmitting film and a covering film with a second opening, the first opening and the second opening have corresponding shapes, and the The center of the first opening coincides with the center of the second opening, and the area of the first opening is equal to, smaller than, or greater than the area of the second opening. According to an embodiment of the present invention, the material contact surface of the transparent base film The part of the surface corresponding to the position of the second opening is the light-transmitting part of the container base, and the part of the surface where the positioning film is attached to the accommodating frame is the joining part of the container base.

According to an embodiment of the present invention, the separation force between the container for the 3D printing device and the solidified molded object is compared with the separation force between the container for the conventional 3D printing device and the solidified molded object secured by screws Can be reduced to less than 30%.

Hereinafter, referring to the drawings attached to the specification of the present invention, the objectives and effects of the present invention, as well as the features, shapes, structures, etc. of the container for the 3D printing device disclosed in the present invention, and the container for the 3D printing device The preparation method is described in detail.

In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the accompanying drawings are only for reference and description, and are not used to limit the creation; and the foregoing and other technical content, features and characteristics of the present invention The effect will be clearly presented in the following detailed description of each embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, for example: "up", "down", "left", "right", "Front", "Back", etc., are just for reference to the directions of the attached icons. Therefore, the directional terms used are used to illustrate, but not to limit the creation. Furthermore, in the following embodiments, the same or similar elements will use the same or similar element numbers.

First, please refer to FIG. 1, which is an exploded schematic diagram showing an embodiment of a container for a 3D printing device of the present invention. The container 1 for the 3D printing device is composed of a surrounding frame body 10 and a bottom substrate 101 with a first opening 100, and forms an accommodating space for accommodating a photocurable material, and the bottom substrate is close A base film 20 is attached; wherein the surrounding frame body 10 and the bottom substrate 101 can be made of light-transmissive or opaque materials, preferably acrylic with high light transmittance can be used. , Polyvinyl chloride (PVC) or quartz glass and other materials, can be determined according to the design requirements of the 3D printing device. In addition, the surrounding frame 10 and the bottom substrate 101 are made by injection molding, film pressing, or 3D printing, etc., and the first opening 100 can be directly formed when the bottom substrate 101 is made, or made first The first opening is cut out after forming a container with a bottom surface. Supplementary explanation, the sizes between the elements in the drawings are not drawn in actual proportions, and are only partially enlarged or reduced in proportion to facilitate the technical description of the present invention.

In this embodiment, the first opening 100 is a geometrical figure of a parallelogram, but not limited to this. The first opening 100 can be designed in any shape according to user needs, for example, it can be a square or a rectangle. , Diamond, circle, ellipse, triangle, trapezoid, polygon and other geometric figures, or irregular shapes.

The base film 20 is a flexible film, and the area of the base film corresponding to the shape, size and position of the first opening 100 is the light-transmitting portion 201, and the area other than the light-transmitting portion 201 is used to interact with The bonding portion 202 to which the bottom substrate is attached; the light-transmitting portion is disposed at a corresponding position of the first opening 100 and the base film is attached to the outer bottom surface of the bottom substrate 101 via the bonding portion 202.

Next, the manufacturing method of the container for the 3D printing device shown in Fig. 1 is described as follows:

(a) Opening a first opening on the bottom substrate of the container. The method of making the container is not particularly limited. It can depend on the material of the container. For example, it can be injection molding, film pressing, or 3D printing. Way made. In addition, the first opening 100 can be directly formed when the container is made, or it can be made into a container with a bottom surface and then cut.

(b) A base film is tightly bonded to the outer bottom surface of the base substrate to seal the first opening to produce a container for a 3D printing device; the area of the base film corresponding to the position of the first opening 100 is the light-transmitting portion 201 According to the technical idea of the present invention, the area outside the light-transmitting portion is the bonding portion 202 for bonding with the base substrate. The base film may optionally contain at least polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroethylene Teflon film (Teflon) made of alkoxy vinyl ether copolymer (PFA), fluorinated ethylene propylene copolymer (FEP), or copolymer of ethylene and tetrafluoroethylene (ETFE), and the At least one of the upper surface and the lower surface of the base film has hydrophobic and oleophobic properties, and the hydrophobic and oleophobic surface of the base film faces the inner side of the container.

After surface treatment of the bonding portion 202 of the base film, a hydrophilic and lipophilic surface with a hydrophilic and lipophilic group can be formed, and an adhesive can be coated on the surface of the substrate bonding portion 202 so that the bonding portion 202 can pass through the The adhesive is attached to the bottom surface outside the bottom substrate.

5, according to the technical idea of the present invention, in the foregoing step (b), in order to avoid wrinkles of the base film 20 during the bonding process to the base substrate 101, the base film can be further separated on both sides Set the load-bearing unit 50 and place a suspension 60 of equal weight in the load-bearing unit 50, so that both sides of the basement membrane are tightened by the action of the suspension 60, and the weight of the suspension 60 is evenly distributed on both sides of the basement membrane 20 to avoid The base film 20 is deformed or damaged. The base film can be smoothly joined to the bottom substrate of the container. After the base film 20 and the base substrate 101 are joined, the suspension 60 and the load-bearing unit 50 are removed.

The structure of the load-bearing unit 50 is shown in FIG. 6, one end is a joint end 501 for joining with the base film, and the other end is a load-bearing end 502 with a accommodating space for placing a hanging object 60. In addition, the load-bearing unit 50 is preferably composed of a polymer film, which is beneficial to be bonded to or removed from the base film 20.

According to the technical idea of the present invention, the adhesive applied on the surface of the joint 202 is not particularly limited; in general, the adhesive includes at least polyvinyl acetate, epoxy resin, silicone, and polymethacrylic acid Any one or more of methyl ester, styrene-butadiene rubber, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures thereof; preferably at least containing polyvinyl acetate , Epoxy resin, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures of any one or more components; more preferably at least Contains any one or more of polyvinyl acetate, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, ethylene/vinyl acetate copolymer, and mixtures thereof; preferably at least poly Any one or more of ethylene acetate, polymethyl methacrylate, ethylene/vinyl acetate copolymer, and mixtures thereof.

Moreover, in this embodiment, the base substrate 101 and the base film 20 are attached to each other by using an adhesive, but it is not limited to this; for example, it is also possible to bond the base film 20 in a hot pressing process. The part 202 is attached to the outer bottom surface of the base substrate 101; the heat-pressing method can be ultrasonic, high-frequency, infrared, hot air blowing, etc., but the implementation is not limited to the above method, as long as the base joint 202 can be The accommodating frame 10 can be thermally melted and consolidated.

Please also refer to FIGS. 2 to 4 of the present invention, which are respectively an exploded schematic diagram and a cross-sectional schematic diagram of another embodiment of a container for a 3D printing device of the present invention drawn from different perspectives. The container 1 for the 3D printing device is composed of a surrounding frame body 10 and a bottom substrate 101 with a first opening 100, and forms an accommodating space for accommodating a photocurable material, and the bottom substrate is close A base film 20 is attached; wherein the surrounding frame body 10 and the bottom substrate 101 can be made of light-transmissive or opaque materials, preferably acrylic with high light transmittance can be used. , Polyvinyl chloride (PVC) or quartz glass and other materials, can be determined according to the design requirements of the 3D printing device. In addition, the surrounding frame 10 and the bottom substrate 101 are made by injection molding, film pressing, or 3D printing, etc., and the first opening 100 can be directly formed when the bottom substrate 101 is made, or made first The first opening is cut out after forming a container with a bottom surface. Supplementary explanation, the sizes between the elements in the drawings are not drawn in actual proportions, and are only partially enlarged or reduced in proportion to facilitate the technical description of the present invention.

In this embodiment, the base film 20 is composed of a covering film 30 having a second opening 300 and a functional light-transmitting film 40, and the functional light-transmitting film 40 is attached to the second opening 300 To seal the second opening.

According to the technical idea of the present invention, the coating film 30 is generally made of flexible polymer materials, for example, it can be made of polyethylene terephthalate (PET) or polycarbonate (PC). , Polyvinyl chloride (PVC), ABS resin, polyethylene (PE), polypropylene (PP), and any combination of materials, preferably made of polyethylene terephthalate (PET), Made of polycarbonate (PC), polyvinyl chloride (PVC), ABS resin, and any combination of materials; more preferably made of polyethylene terephthalate (PET), polyvinyl chloride (PVC) , ABS resin, and any combination of materials; the best option is to use a film made of polyethylene terephthalate (PET).

According to the technical idea of the present invention, the covering film 30 and the functional light-transmitting film 40 are bonded to each other with an adhesive; generally, the adhesive includes at least polyvinyl acetate, epoxy resin, silicone, poly Any one or more of methyl methacrylate, styrene butadiene rubber, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures thereof; preferably at least containing poly Any one or more of ethylene acetate, epoxy resin, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures thereof; more Preferably it contains at least one or more of polyvinyl acetate, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, ethylene/vinyl acetate copolymer, and mixtures thereof; most preferably It contains at least one or more of polyethylene acetate, polymethyl methacrylate, ethylene/vinyl acetate copolymer, and mixtures thereof.

In addition, at least one of the upper surface and the lower surface of the transparent base film 40 has hydrophobic and oleophobic properties, and the contact angle for the droplets is greater than 100 degrees, preferably between 120 degrees and 180 degrees.

In addition, according to an embodiment of the present invention, when the covering film 30 and the functional light-transmitting film 40 are bonded to each other with an adhesive, the surface on which the functional light-transmitting film 40 and the covering film 30 are attached has a hydrophilic Lipophilic properties, the contact angle for the droplets is less than 90 degrees, preferably between 10 degrees and 60 degrees. Wherein, part of the surface of the covering film 30 coated with the adhesive is attached to the functional light-transmitting film 40, and other parts contact the outer bottom surface of the base substrate 101, so that the functional light-transmitting film 40 and the covering The film 30 is adhered to the base substrate 101 together, so that the light-transmitting base film 40 closes the first opening 100 and adheres to the outer bottom surface of the base substrate 101 through the positioning film 30.

Furthermore, according to the technical idea of the present invention, the first opening 100, the second opening 300, and the functional light-transmitting film 40 are geometric figures that can correspond to each other; in other words, the first opening 100 and the second opening The figures formed by 300 and the functional transparent film 40 are geometric figures of the same shape, but have the same or different size ratios. The area of the second opening 300 can be greater than, less than, or equal to the area of the first opening 100, and the surface area of the functional light-transmitting film 40 is greater than the area of the second opening 300.

According to the technical idea of the present invention, the functional light-transmitting film 40 can be selected from polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA), fluorinated ethylene propylene copolymer ( FEP), ethylene and tetrafluoroethylene copolymer (ETFE) and other materials made of Teflon film (Teflon), due to its material characteristics, the surface of the functional light-transmitting film 40 is hydrophobic and oleophobic, and After surface treatment is performed on either side of the functional light-transmitting film 40, a hydrophilic and lipophilic surface with one of the hydrophilic and lipophilic groups can be formed, so that the side surface can be attached to the coating film 30 coated with the adhesive.

According to the technical idea of the present invention, the thickness of the functional transparent film 40 is less than or equal to 250 μm; preferably, the thickness of the functional transparent film 40 is less than or equal to 200 μm; more preferably, the functional transparent film 40 is less than or equal to 200 μm. The thickness of the light film 40 is less than or equal to 150 μm; particularly preferably, the thickness of the functional light transmission film 40 is less than or equal to 100 μm; most preferably, the thickness of the functional light transmission film 40 is less than or equal to 50 μm.

According to the technical idea of the present invention, the light transmittance of the functional light-transmitting film 40 is greater than 85%; preferably, the light transmittance of the functional light-transmitting film 40 is greater than 90%; most preferably, the functional light-transmitting film 40 is greater than 90%. The light transmittance of the light film 40 is 99% or more.

Next, the manufacturing method of the container for the 3D printing device shown in Figs. 2 to 4 is explained as follows:

(a) Open a first opening in the bottom substrate of the container.

(b) Join the functional light-transmitting film and the covering film provided with the second opening, so that the functional light-transmitting film seals the second opening, thereby forming a base film.

(c) The base film is tightly attached to the outer bottom surface of the base substrate in such a way that the center of the first opening and the second opening overlap, thereby sealing the first opening to produce a container for a 3D printing device.

According to the technical idea of the present invention, at least one of the upper surface and the lower surface of the functional light-transmitting film has hydrophobic and oleophobic properties, and the hydrophobic and oleophobic surface of the base film faces the inner side of the container.

Also, please refer to FIG. 5, similar to the foregoing embodiment, in step (c), in order to avoid wrinkles of the base film 20 during the lamination process, load-bearing units 50 may be further provided on both sides of the base film and placed on A suspension 60 of equal weight is placed in the load-bearing unit 50, so that both sides of the basement membrane are tightened by the action of the suspension 60, and the weight of the suspension 60 is evenly distributed on both sides of the basement membrane 20 to avoid deformation or deformation of the basement membrane 20. It is broken. The base film can be smoothly joined to the bottom substrate of the container. After the base film 20 and the base substrate 100 are joined together, the suspension 60 and the bearing unit 50 are removed.

The structure of the load-bearing unit 50 is shown in FIG. 6, one end is a joint end 501 for joining with the base film, and the other end is a load-bearing end 502 with a accommodating space for placing a hanging object 60. In addition, the load-bearing unit 50 is preferably composed of a polymer film, which is beneficial to be bonded to or removed from the base film 20.

In addition, in this embodiment, the bottom substrate 101 and the base film 20 are attached to each other using an adhesive, but it is not limited to this; for example, the substrate in the container substrate 20 can also be heated and pressed. The joint 202 is attached to the outer bottom surface of the accommodating frame 10; the heat-pressing treatment can be ultrasonic, high-frequency, infrared, hot air blowing, etc., but the implementation is not limited to the above method, as long as the substrate can be joined The part 202 and the accommodating frame 10 can be thermally fused and consolidated. Similarly, in this embodiment, the covering film 30 and the functional light-transmitting film 40 can also be bonded to each other by a hot pressing process to form the base film 20. The implementation is not limited to the above method, as long as the positioning can be made The film 30 and the transparent base film 40 can be thermally fused and consolidated.

Hereinafter, an example of the manufacturing method of the container for the aforementioned 3D printing device will be illustrated.

"Examples 1 to 5"

In Examples 1 to 5, the 3D printing device container S1 to 3D printing device container S5 were produced using the 3D printing device container manufacturing method shown in FIGS. 2 to 4, and the functionalities used The light-transmitting film is a fluorinated ethylene propylene copolymer (FEP) film. The difference of Examples 1 to 5 is that in the process of bonding the base film to the bottom substrate of the container in step (c), the weight of the base film is sequentially 600g, 1200g, 1800g, 2400g, 3000g. Next, the 3D printing device container S1 to the 3D printing device container S5 were used to perform a separation force test.

The separation force test method is explained as follows:

Please refer to Figure 7, which is a schematic diagram showing the device in the separation force test. Put the visible light resin material NT-02 provided by Taike 3D company in container P for 3D printing device, choose 50mm*50mm block diagram file for exposure, Z axis rising speed is 2.5mm/S, exposure light source is down The projection time of the illuminated projector is 60 seconds to ensure that the exposed area is completely cured and successfully attached to the molding platform equipped with the S-shaped load cell. When the exposure is completed, the load cell moves upward and generates a separation force. Thereby, the separation force generated by the 3D printing device container S1 to the 3D printing device container S5 through the above-mentioned separation force testing method is generated by the load cell and recorded by the recorder. The obtained values are recorded in Table 1.

"Comparative Example 1"

In Comparative Example 1, the 3D printing device container N1 of a commercially available light-curing 3D printing machine is selected. The 3D printing device container N1 is fixed by a conventional screw locking method, and the container bottom plate and the function are transparent. The film is made by fixing with clamps and screws. The functional light-transmitting film used is the same as in Examples 1 to 5, which is a fluorinated ethylene propylene copolymer (FEP) film.

Next, use the container N1 for the 3D printing device to perform a separation force test, and record the obtained values in Table 1.

Table 1

From Table 1 above, it can be seen that the separation force of the containers S1 to S5 for the 3D printing device is 1.6N, 2.05N, 2.28N, 2.53N, 3.12N, and the separation force of the resin tank N1 is 14.63N, showing 3D rows The separation force of the containers S1 to S5 for the printing device is significantly smaller than that of the container N1 for the 3D printing device. It can be seen from this that when the resin material used in the container for the 3D printing device of the present invention is used for the photocuring reaction, the separation force between the cured resin material and the bottom of the container for the 3D printing device can be effectively reduced, thereby avoiding 3D printing In the process of drawing, the printed object is damaged.

In summary, the container used in the 3D printing device of the light-curing three-dimensional modeling device of the present invention has anti-sticking properties, flexibility, chemical compatibility, electrical reliability, wide thermal range, high light transmittance and mechanical toughness. The transparent film can be further combined with the positioning film as the bottom support material to replace the smooth bottom surface of the container for the 3D printing device used to mold the object, which can improve the instability of the prior art in the release process The problem also further solves the problem that the container for the 3D printing device is scrapped due to excessive deformation or failure of the bottom anti-sticking film.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the protection scope of the patent application, and these all belong to the protection of the present invention.

10: Peripheral frame 100: first opening 101: bottom substrate 20: base film 201: light transmitting part 202: joining part 30: covering film 300: second opening 40: light transmitting base film 50: bearing unit 501: Joint end 502: Bearing end 60: Hanging object 70: Forming platform 80: S-shaped load cell P: Container for 3D printing

FIG. 1 is an exploded schematic diagram showing a container for a 3D printing device in an embodiment of the present invention. Fig. 2 is an exploded schematic diagram showing one side of a container for a 3D printing device in another embodiment of the present invention. FIG. 3 is an exploded schematic diagram showing the other side of the container for the 3D printing device shown in FIG. 2. 4 is a schematic cross-sectional view showing the structure of the container for the 3D printing device shown in FIG. 2. FIG. 5 is a schematic diagram showing the bonding of the base film and the base substrate 101 in an embodiment of the present invention. Fig. 6 is a schematic diagram showing the structure of the load-bearing unit in the embodiment of the present invention. Fig. 7 is a schematic diagram showing the operation of the separation force test in the embodiment of the present invention.

10: Surrounding frame

100: first opening

20: basement membrane

201: Light penetration part

201: Joint

Claims (8)

A method for manufacturing a container for a 3D printing device, which includes performing the following processing steps on a container composed of a surrounding frame and a bottom substrate: (a) opening a first opening in the bottom substrate; (b) The outer bottom surface of the base substrate is closely attached to a base film to seal the first opening; wherein the area of the base film corresponding to the position of the first opening is the light penetrating portion, and the area outside the light penetrating portion is used At least one of the upper surface and the lower surface of the base film has hydrophobic and oleophobic properties at the junction portion attached to the base substrate, and the hydrophobic and oleophobic surface of the base film is toward the inside of the container; and the base film system From polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA), fluorinated ethylene propylene copolymer (FEP), and copolymer of ethylene and tetrafluoroethylene (ETFE) It is formed of at least one material selected from the group. The method for manufacturing a container for a 3D printing device described in claim 1, wherein the bonding of the base substrate and the base film is achieved by adhesive or hot pressing. A method for manufacturing a container for a 3D printing device, which includes the following processing steps for a container composed of a surrounding frame and a bottom substrate: (a) opening a first opening in the bottom substrate; (b) A functional light-transmitting film is attached to the covering film provided with a second opening, so that the functional light-transmitting film seals the second opening, thereby forming a base film; (c) the base film conforms to the first opening The method of overlapping with the center of the second opening is closely attached to the outer bottom surface of the base substrate; wherein at least one of the upper surface and the lower surface of the functional light-transmitting film is hydrophobic and oleophobic, and the functional light-transmitting film The hydrophobic and oleophobic surface of the membrane faces the inner side of the container; and The first opening and the second opening have corresponding shapes, and the area of the first opening is equal to, smaller than, or larger than the area of the second opening. The method for manufacturing a container for a 3D printing device described in claim 3, wherein the coating film is selected from polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl chloride (PVC), Made of ABS resin, polyethylene (PE), polypropylene (PP), and any combination of materials. The method for manufacturing a container for a 3D printing device as described in claim 3, wherein the functional light-transmitting film is selected from polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA) ), fluorinated ethylene propylene copolymer (FEP), and ethylene and tetrafluoroethylene copolymer (ETFE) at least one material selected from the group. The method for manufacturing a container for a 3D printing device described in claim 3, wherein the bonding of the covering film and the functional light-transmitting film is achieved by an adhesive or a heat pressing process. The method for manufacturing a container for a 3D printing device described in claim 3, wherein the bonding of the base substrate and the base film is achieved by an adhesive or a hot pressing process. A container for a 3D printing device is composed of a surrounding frame and a bottom substrate; wherein the bottom substrate is provided with a first opening; a base film is closely attached to the bottom surface of the base film; The area where the first opening should be located is the light-transmitting portion, and the area other than the light-transmitting portion is the bonding portion attached to the base substrate; and at least one of the upper surface and the lower surface of the base film has Hydrophobic and oleophobic, and the hydrophobic and oleophobic surface of the base film faces the inner side of the container; and the base film is formed by bonding a functional light-transmitting film and a coating film with a second opening, the first The opening and the second opening have corresponding shapes, and the centers of the first opening and the second opening Overlap, and the area of the first opening is equal to, smaller than, or greater than the area of the second opening, and the thickness of the functional light-transmitting film is less than or equal to 250 μm.

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