TW202019669A - Container for 3D printer and manufacturing method thereof for improving instability problem during releasing process - Google Patents

Abstract

This invention relates to a container for 3D printer as a light curing three-dimensional modeling device and a manufacturing method thereof. The container for 3D printer is a container composed of a surrounding frame body and a bottom substrate, wherein the bottom substrate is opened with a first opening, and the outer bottom surface of the bottom substrate is tightly attached with a substrate film. The area of the substrate film corresponding to the position of the first opening is a light transmitting portion and the area out of the light transmitting portion is a jointing portion attached with the bottom substrate. At least one of the upper surface and the lower surface of the substrate film is provided with hydrophobicity and oleophobicity and the surface of the substrate having hydrophobicity and oleophobicity faces the inner side of the container. Thus, this prevention utilizes a flexible and light transmissive film to replace the light facing bottom surface of the container for 3D printer for shaping object, so as to improve the instability problem in the prior art during the releasing process.

Description

Container for 3D printing device and manufacturing method thereof

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

In recent years, with the development of science and technology, many different methods for constructing physical three-dimensional (3D) models using additive manufacturing technologies such as layer-by-layer construction models 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 a plurality of 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 also been gradually proposed. For example, the printing module of the printing device can generally move the space coordinates XYZ constructed according to the design data of the 3D model along the XY plane above the base, 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 (Fused Deposition Modeling, FDM) technology, 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, etc., but not limited to this.

Both the three-dimensional image scanning technology and the three-dimensional display technology are the focus of the current 3D (Three-dimensional) printing technology. The object to be printed is scanned, and the appropriate three-dimensional image data is generated as the image source for 3D printing. With the help of the printer, the content of the stereoscopic image is printed out as a solid 3D model. Therefore, the technology of scanning objects and generating 3D images will be related to whether an accurate 3D model can be printed. Taking a stereolithography stereolithography device as an example, which is a technology for forming a three-dimensional object by curing a construction material through a light source, the printing module is suitable for being immersed in a liquid molding material contained in a resin tank, and the light source module The group irradiates the liquid molding material as a 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 axial direction Z, the liquid molding material can be solidified layer by layer and stacked into a body object. It should be noted that, when the light source is disposed under the resin tank, the objects in the printing just cured by the light source will stick to the bottom of the resin tank. In order for the liquid molding materials to continue to solidify and stack layer by layer, the three-dimensional printing device needs to separate the three-dimensional objects in printing from the bottom of the resin tank by swinging the resin tank.

The resin tank is a container for containing the photo-curable resin. The projected light projects the light pattern upward from below to the transparent bottom of the housing frame to solidify the liquid photo-curing material in the housing frame. However, as a result of the van der Waals dipole force, chemical bonding force, and attractive force, adhesion between the photocurable layer and the housing frame is generated, thereby causing the problem that the building platform has difficulty pulling the photocurable layer. The size of the release force is directly 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 solid three-dimensional objects to be hardly detached 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 sticking phenomenon are to coat the bottom of the housing with an anti-sticking film material, such as Teflon or silicone, to prevent the light curing layer from sticking In the housing, but this method needs to consider the flatness and uniformity of the coating, and when the thickness of the anti-sticking film increases, it may reduce the transparency of the bottom of the groove and affect the quality of three-dimensional printing; When the anti-sticking mucous membrane fails, the entire resin trough is scrapped, and it is necessary to repurchase or make a new resin trough.

In addition, there is a technology to physically fix the film made of Teflon to the bottom of the resin tank by screw locking or clamps, which can help reduce the release force of the three-dimensional objects and the bottom of the tank, and can be convenient Replacement films, such as the resin tank for DLP light-curing 3D printers disclosed in Chinese Patent Publication No. CN 105365218 B, and a resin tank for DLP light-curing 3D printers that can be quickly changed film disclosed in Chinese Invention Patent Publication CN 107336438A, and Its assembly method; however, the above-mentioned patented technologies all require the use of complicated and trivial fixing elements when fixing the film, which not only takes time to assemble, 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 has taken into account the defects in the conventional technology, after careful testing and research, and a persevering spirit, the end The present invention was conceived to solve the shortcomings of the conventional art.

In view of this, the present invention provides a container for a 3D printing device and a method for manufacturing the same, replacing the bottom surface of the surface of the container for a 3D printing device with a flexible light-transmitting film to improve the prior art The process is unstable.

To achieve the purpose of the 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) at the bottom A first opening is formed in the substrate; (b) A base film is closely attached to the outer bottom surface of the bottom substrate to seal the first opening.

According to an embodiment of the present invention, a region of the base film corresponding to the position of the first opening is a light penetrating portion, and a region other than the light penetrating 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 oleophobicity, and the surface of the base film having hydrophobic oleophobicity is toward the inside of the container.

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

In addition, according to another embodiment of the present invention, a method for manufacturing a container for a 3D printing device may 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) attaching a functional light-transmitting film to a coating 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 is closely adhered to the outer bottom surface of the bottom substrate in such a manner that the centers 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 light-transmitting film is hydrophobic and oleophobic, and the surface of the functional light-transmitting film having hydrophobic and oleophobic properties is toward the inside of the container.

According to an embodiment of the invention, 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.

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 It is made of any one of ethylene propylene copolymer (FEP), ethylene and tetrafluoroethylene copolymer (ETFE), and combinations thereof.

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

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

In addition, the present invention also provides a container for a 3D printing device, which includes: a container formed by a surrounding frame and a bottom substrate; wherein the bottom substrate defines a first opening; the bottom surface is closely attached to the bottom surface of the bottom substrate A base film; the area of the base film corresponding to the position of the first opening is a light penetrating portion, and the area other than the light penetrating portion is a bonding portion bonded to the base substrate; and the upper surface of the base film and At least one of the lower surfaces has hydrophobic and oleophobicity, and the surface of the base film having hydrophobic and oleophobicity faces the inside of the container.

According to an embodiment of the present invention, wherein the container base is formed by laminating a functional light-transmitting film and a coating film provided with a second opening, the first opening and the second opening have corresponding shapes, and the The first opening coincides with the center of the second opening, and the area of the first opening is equal to, smaller than, or larger than the area of the second opening. According to an embodiment of the present invention, the material contact surface of the light-transmitting base film A part of the surface corresponding to the position of the second opening is the light penetrating portion of the container base, and a part of the surface where the positioning film and the receiving frame body are attached is the joint portion of the container base.

According to an embodiment of the present invention, the separation force of the container for the 3D printing device and the cured molded object is compared to the separation force of the container for the 3D printing device and the cured molded object that are locked by conventional screws Can be reduced to below 30%.

Hereinafter, referring to the drawings attached to the specification of the present invention, the purpose and achievement of the present invention, as well as the features, shapes, structures and other features 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 explained in detail.

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the drawings. The detailed description and technical content of the present invention are described below in conjunction with the drawings. However, the drawings are provided for reference and explanation only, and are not intended to limit the creation; however, the foregoing and other technical contents, features and The function will be clearly presented in the following detailed description of each embodiment with reference to the drawings. The direction words mentioned in the following embodiments, for example: "up", "down", "left", "right", "Front", "rear", etc. are for reference only to the directions attached to the icon. Therefore, the directional terms used are for illustration, not for limiting the creation; further, 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 view showing an embodiment of a container for a 3D printing device of the present invention. The container 1 for a 3D printing device is composed of a surrounding frame 10 and a bottom substrate 101 having a first opening 100, and forms an accommodating space for accommodating a photocurable material, and the bottom of the bottom substrate is tightly closed A base film 20 is attached; wherein the surrounding frame 10 and the bottom substrate 101 may be made of light-transmissive or opaque materials, preferably acrylic with high light transmittance , Polyvinyl chloride (PVC) or quartz glass, etc., depending on the design requirements of the 3D printing device. In addition, the surrounding frame body 10 and the base substrate 101 are made by injection molding, film pressing, or 3D printing, etc., and the first opening 100 can be directly formed when the base substrate 101 is manufactured, or can be manufactured first After forming a container with a bottom surface, the first opening is cut out. It is added that the sizes and dimensions between the elements in the drawings are not drawn in actual proportions, but are only used for the purpose of explaining the technical content of the present invention and partially enlarge or reduce the corresponding proportions.

In this embodiment, the first opening 100 is a parallelogram geometry, but not limited to this, the first opening 100 can be designed into any shape according to user needs, for example, it can be square or rectangular , Diamonds, circles, ellipses, triangles, trapezoids, polygons 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 penetrating portion 201, and the area other than the light penetrating portion 201 is used for The bonding portion 202 attached to the bottom substrate; the light transmitting portion is provided at a corresponding position of the first opening 100 and the base film is attached to the outer bottom surface of the base substrate 101 via the bonding portion 202.

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

(a) A first opening is formed in the bottom substrate of the container. The manufacturing method of the container is not particularly limited, and may depend on the material of the container. For example, it may be injection molding, film pressing, or 3D printing. Made by the way. In addition, the first opening 100 may be directly formed when the container is manufactured, or the container may have a bottom surface and then be cut.

(b) A base film is tightly bonded to the outer bottom surface of the bottom substrate, and a container for a 3D printing device is manufactured by sealing the first opening; the area of the base film corresponding to the position of the first opening 100 is the light-transmitting portion 201 The area other than the light penetrating portion is the bonding portion 202 for bonding to the bottom substrate. According to the technical idea of the present invention, the base film may be at least polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoro Teflon film made of alkoxyvinyl 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 surface of the base film having hydrophobic and oleophobic properties faces the inside of the container.

After the bonding portion 202 of the base film is surface-treated, a hydrophilic lipophilic surface having one of hydrophilic and lipophilic groups can be formed, and an adhesive can be applied to the surface of the base 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.

Also, please refer to FIG. 5 first, according to the technical idea of the present invention, in the aforementioned step (b), in order to avoid wrinkling of the base film 20 in the process of bonding with the base substrate 101, it is possible to further separate the two sides of the base film A load-bearing unit 50 is provided and equal-weight suspensions 60 are placed in the load-bearing unit 50, so that both sides of the base film are stretched by the suspension 60, and the weight of the suspension 60 is evenly distributed on both sides of the base film 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 bonding of the base film 20 and the bottom substrate 101 is completed, 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 bonding end 501 for bonding with the base film, and the other end is a load-bearing end 502 with an accommodating space for placing the 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 to the surface of the joint 202 is not particularly limited; generally, the adhesive includes at least polyethylene acetate, epoxy resin, silicone, polymethacrylic acid Any one or more than one of methyl ester, styrene butadiene rubber, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures thereof; preferably at least polyvinyl acetate , Epoxy resin, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures of any one or more than one component; more preferably at least Contains any one or more than one component of polyvinyl acetate, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, ethylene/vinyl acetate copolymer, and mixtures thereof; most preferably contains at least a polymer Any one or more than one component of ethylene acetate, polymethyl methacrylate, ethylene/vinyl acetate copolymer, and mixtures thereof.

Furthermore, in this embodiment, the base substrate 101 and the base film 20 are adhered to each other using an adhesive, but it is not limited to this; for example, the bonding in the base film 20 may also be performed by hot pressing The portion 202 is attached to the bottom surface outside the bottom substrate 101; the hot-pressing treatment method may be ultrasonic, high-frequency, infrared, hot air blowing and other treatment methods, but the implementation is not limited to the above method, as long as the base bonding portion 202 and The housing 10 can be hot-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 different embodiments of a container for a 3D printing device according to the present invention. The container 1 for a 3D printing device is composed of a surrounding frame 10 and a bottom substrate 101 having a first opening 100, and forms an accommodating space for accommodating a photocurable material, and the bottom of the bottom substrate is tightly closed A base film 20 is attached; wherein the surrounding frame 10 and the bottom substrate 101 may be made of light-transmissive or opaque materials, preferably acrylic with high light transmittance , Polyvinyl chloride (PVC) or quartz glass, etc., depending on the design requirements of the 3D printing device. In addition, the surrounding frame body 10 and the base substrate 101 are made by injection molding, film pressing, or 3D printing, etc., and the first opening 100 can be directly formed when the base substrate 101 is manufactured, or can be manufactured first After forming a container with a bottom surface, the first opening is cut out. It is added that the sizes and dimensions between the elements in the drawings are not drawn in actual proportions, but are only used for the purpose of explaining the technical content of the present invention and partially enlarge or reduce the corresponding proportions.

In this embodiment, the base film 20 is composed of a coating 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 a flexible polymer material, for example, it may 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), 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 choice is a film made of polyethylene terephthalate (PET).

According to the technical idea of the present invention, the coating film 30 and the functional light-transmitting film 40 are adhered to each other with an adhesive; in general, the adhesive includes at least polyethylene acetate, epoxy resin, silicone, polysiloxane Any one or more components of methyl methacrylate, styrene-butadiene rubber, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic acid, ethylene/vinyl acetate copolymer, and mixtures thereof; Any one or more than one 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 any one or more components of polyvinyl acetate, polymethyl methacrylate, carboxymethyl cellulose, polyvinyl alcohol, ethylene/vinyl acetate copolymer, and mixtures thereof; most preferably It contains at least any one or more than one of polyvinyl 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 light-transmitting 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 coating film 30 and the functional light-transmitting film 40 are adhered to each other with an adhesive, the surface of the functional light-transmitting film 40 and the coating film 30 is hydrophilic The lipophilic nature, the contact angle of the droplet is less than 90 degrees, preferably between 10 degrees and 60 degrees. Wherein, part of the surface of the coating film 30 coated with the adhesive is attached to the functional light-transmitting film 40, while other parts contact the outer bottom surface of the base substrate 101, so that the functional light-transmitting film 40 and the coating The film 30 adheres to the base substrate 101 together, so that the light-transmitting base film 40 closes the first opening 100 and is tightly attached 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 shapes that can correspond to each other; in other words, the first opening 100, the second opening The graphics formed by 300 and the functional light-transmitting film 40 are geometric shapes of the same shape, but have the same or different size ratios. The area of the second opening 300 may be larger, smaller, or equal to the area of the first opening 100, and the surface area of the functional light-transmitting film 40 is larger 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), a copolymer of ethylene and tetrafluoroethylene (ETFE) and other materials made of Teflon film (Teflon), due to its material properties, the surface of the functional light-transmitting film 40 is hydrophobic and oleophobic, and After surface treatment of either side of the functional light-transmitting film 40, a hydrophilic lipophilic surface having one of hydrophilic lipophilic groups can be formed, so that the side surface can be bonded to the coating film 30 coated with the adhesive.

According to the technical idea of the present invention, wherein 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 The thickness of the optical film 40 is less than or equal to 150 μm; particularly preferably, the thickness of the translucent functional light-transmitting film 40 is less than or equal to 100 μm; optimally, the thickness of the functional translucent film 40 is less than or equal to 50 μm.

According to the technical idea of the present invention, wherein the light transmittance of the functional transparent film 40 is greater than 85%; preferably, the light transmittance of the functional transparent film 40 is greater than 90%; optimally, the functional light transparent The light transmittance of the optical 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 the first opening in the bottom substrate of the container.

(b) The functional light-transmitting film is bonded to the coating film provided with the second opening, and the functional light-transmitting film seals the second opening, thereby forming a base film.

(c) The base film is closely adhered to the outer bottom surface of the bottom substrate in such a manner that the centers 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 surface of the base film having hydrophobic and oleophobic properties faces the inside of the container.

Also, referring to FIG. 5, in the same way as the previous embodiment, in step (c), in order to avoid wrinkling of the base film 20 during the bonding process, it is possible to further provide load-bearing units 50 on both sides of the base film and An equal-weight suspension 60 is placed in the load-bearing unit 50, so that both sides of the base film are stretched by the suspension 60, and the weight of the suspension 60 is evenly distributed on both sides of the base film 20 to avoid deformation or deformation of the base film 20. Is broken. The base film can be smoothly joined to the bottom substrate of the container. After the base film 20 and the bottom substrate 100 are bonded, 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 bonding end 501 for bonding with the base film, and the other end is a load-bearing end 502 with an accommodating space for placing the 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.

Furthermore, in this embodiment, the base substrate 101 and the base film 20 are adhered to each other using an adhesive, but it is not limited to this; for example, the substrate in the container base 20 may also be processed by hot pressing The bonding portion 202 is attached to the outer bottom surface of the housing 10; the hot-pressing method may be ultrasonic, high-frequency, infrared, hot-air blowing and other processing methods, but the implementation is not limited to the above method, as long as the substrate can be bonded The portion 202 and the accommodating frame 10 may be heat-melted and consolidated. Similarly, in this embodiment, the coating film 30 and the functional light-transmitting film 40 can also be bonded to each other using hot pressing to form the base film 20, and the implementation is not limited to the above method as long as the positioning can be achieved The film 30 and the light-transmissive base film 40 can be hot-melted and consolidated.

In the following, an example of the manufacturing method of the aforementioned container for a 3D printing device will be described as an example.

"Examples 1 to 5"

In Examples 1 to 5, the 3D printing device container S1 to the 3D printing device container S5 were prepared using the manufacturing method of the container for 3D printing device shown in FIGS. The light-transmitting film is a fluorinated ethylene propylene copolymer (FEP) film. The difference between 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 in order of loading is: 600g, 1200g, 1800g, 2400g, 3000g. Next, the separation force test was performed using the containers S1 to 3D printing device containers S1 to S5, respectively.

The test method of separation force is described as follows:

Please refer to FIG. 7, which is a schematic diagram showing the device in the separation force test. The visible light resin material NT-02 provided by Tektronix Co., Ltd. is contained in the container P for the 3D printing device, and a 50mm*50mm block image file is selected for exposure, the Z-axis rising speed is 2.5mm/S, and the exposure light source is as follows The projection time of the projector is 60 seconds to ensure that the exposed area is fully cured and successfully attached to the molding platform equipped with S-shaped load cells. When the exposure is completed, the load cell moves upward and generates a separation force. Thus, the separation force generated by the container S1 for the 3D printing device to the container S5 for the 3D printing device through the above-mentioned separation force test 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, a container N1 for a 3D printing device of a commercially-available light-cured 3D printing machine is selected. The container N1 for a 3D printing device is screwed by a conventional method to transmit the bottom plate of the container and the function of light. The film is made by clamping with a jig and a screw. The functional light-transmitting film used is the same as that of Examples 1 to 5, and is a fluorinated ethylene propylene copolymer (FEP) film.

Next, the separation force test was performed with the container N1 of the 3D printing device, and the obtained values were recorded in Table 1.

Table 1

It can be seen from Table 1 above that the separation forces of the containers S1 to S5 for the 3D printing device are 1.6N, 2.05N, 2.28N, 2.53N, and 3.12N in sequence, and the separation force of the resin tank N1 is 14.63N, showing the 3D row The separation force of the containers S1 to S5 for the printing device is significantly smaller than the container N1 for the 3D printing device. It can be seen that when using the container for a 3D printing device of the present invention to contain a resin material for photo-curing reaction, the separation force of the cured resin material and the bottom of the container for the 3D printing device can be effectively reduced, thereby avoiding printing in 3D During the drawing process, the printed objects are damaged.

In summary, the container of the present invention used in the 3D printing device of the light-curing three-dimensional modeling device uses anti-sticking, flexibility, chemical compatibility, electrical reliability, wide thermal range, high light transmittance and mechanical toughness The light-transmitting film can be further attached to the positioning film as the bottom support material to replace the surface light bottom of the container for the 3D printing device used to form the object, which can improve the unstableness 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 the failure of the anti-sticking film on the bottom surface.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only schematic and are not restrictive. Under the enlightenment of the present invention, many forms can be made without departing from the scope of the present invention and the scope of protection of the patent application, all of which fall within the protection of the present invention.

10: Surrounding frame 100: First opening 101: Bottom substrate 20: Base film 201: Light penetrating portion 202: Bonding portion 30: Coating film 300: Second opening 40: Light-transmitting base film 50: Load-bearing unit 501: Joint end 502: Load-bearing end 60: Suspension 70: Forming platform 80: S-shaped load cell P: 3D printing container

FIG. 1 is an exploded view showing a container for a 3D printing device in an embodiment of the invention. FIG. 2 is an exploded schematic view showing one side of a container for a 3D printing device in another embodiment of the present invention. FIG. 3 is an exploded schematic view 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 view showing the bonding of the base film and the base substrate 101 in the embodiment of the present invention. 6 is a schematic diagram showing the structure of the load-bearing unit in the embodiment of the present invention. 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 penetrating section

201: Joint

Claims (10)

A method for manufacturing a container for a 3D printing device 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 bottom film is closely attached to the outer bottom surface of the bottom substrate to seal the first opening; wherein the area of the base film corresponding to the position of the first opening is a light penetrating portion, and the area other than the light penetrating portion is for use At least one of the upper surface and the lower surface of the base film has hydrophobic and oleophobicity, and the surface of the base film having hydrophobic and oleophobicity faces the inside of the container. The method for manufacturing a container for a 3D printing device as described in claim 1, wherein the base film is made of polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA), fluorine It is formed of at least one material selected from the group consisting of ethylene propylene copolymer (FEP) and copolymers of ethylene and tetrafluoroethylene (ETFE). The method for manufacturing a container for a 3D printing device as described in claim 1, wherein the bonding of the base substrate and the base film is achieved by an adhesive or hot pressing treatment. A method for manufacturing a container for a 3D printing device 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 a coating film having a second opening, so that the functional light-transmitting film seals the second opening, thereby forming a base film; (c) according to the base film so that the first opening Close to the outer bottom surface of the bottom substrate in a manner that coincides with the center of the second opening; 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 The surface of the membrane with hydrophobic and oleophobic properties is toward the inside 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 as described in claim 4, wherein the coating film is selected from polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl chloride (PVC), 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 4, wherein the functional light-transmitting film is made of polytetrafluoroethylene (PTEF), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA ), fluorinated ethylene propylene copolymer (FEP), and a copolymer of ethylene and tetrafluoroethylene (ETFE) selected from the group consisting of at least one material. The method for manufacturing a container for a 3D printing device as described in claim 4, wherein the lamination of the coating film and the functional light-transmitting film is achieved by an adhesive or hot pressing treatment. The method for manufacturing a container for a 3D printing device as described in claim 4, wherein the bonding of the bottom substrate and the base film is achieved by an adhesive or hot pressing treatment A container for a 3D printing device, which is composed of a surrounding frame body and a bottom substrate; wherein the bottom substrate defines a first opening; a base film is closely attached to the bottom surface outside the bottom substrate; the base film phase The area where the first opening should be is the light penetrating portion, and the area other than the light penetrating portion is the bonding portion that is attached to the base substrate; and at least one of the upper surface and the lower surface of the base film is provided with It is hydrophobic and oleophobic, and the surface of the base film with hydrophobic and oleophobicity faces the inside of the container. The container for a 3D printing device according to claim 9, wherein the base film is formed by laminating a functional light-transmitting film and a coating film having a second opening, the first opening and the second opening have Corresponding shapes, and the centers of the first opening and the second opening coincide, and the area of the first opening is equal to, smaller than, or larger than the area of the second opening.

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