TW201722693A - Liquid tank and three-dimensional printing apparatus, and method for three-dimensional printing apparatus - Google Patents

Abstract

A liquid tank adapted to a three-dimensional printing apparatus and configured to contain a liquid photosensitive material is provided. The liquid tank includes a releasing layer and a plate. The releasing layer includes a workpiece forming region. The plate supports the releasing layer, and the plate includes a first region corresponded to the workpiece forming region and a second region adjacent to the first region, wherein the plate includes at least one fluid passage extended from a surface, connected to the releasing layer, of the plate to another surface of the plate. Therefore, a workpiece can be easily separated from the releasing layer. Furthermore, another liquid tank, a three-dimensional printing apparatus, and a method for a three-dimensional printing apparatus are also provided.

Description

Liquid accommodating groove and three-dimensional printing device and three-dimensional printing method

The invention relates to a printing device, in particular to a three-dimensional printing device, a liquid receiving groove thereof and a printing method.

In the conventional photo-curing three-dimensional printing device, the bottom of the accommodating groove for accommodating the photosensitive resin has a release film and a flat plate supporting the release film, and the photosensitive resin is hardened and adhered during the printing of the workpiece. On the release film, one of the layers in the workpiece is formed. In order to continue the printing of the next layer of workpiece, it is necessary to apply force to pull up the workpiece to separate the workpiece and the release film, so that the uncured photosensitive resin is refilled between the workpiece and the release film. However, in the conventional three-dimensional printing apparatus, a closed region is formed between the release film and the flat plate, which causes a low pressure region to be generated during the separation of the workpiece, so that the workpiece and the release film are not easily separated.

While the above problem can be achieved by applying a larger pulling force to separate the workpiece from the release film, the application of a larger pulling force often causes the workpiece to be unsupported and damaged or the release film is excessively pulled and deformed.

Embodiments of the present invention provide a three-dimensional printing apparatus to facilitate separation of a workpiece from a release layer.

The liquid accommodating groove provided by the embodiment of the invention is suitable for the three-dimensional printing device to accommodate the liquid photosensitive material, and the liquid accommodating groove comprises the release layer and the flat plate. The release layer has a workpiece forming zone. The plate supports the release layer and has a first zone corresponding to the workpiece forming zone and a second zone located adjacent to the first zone, the plate having at least one fluid channel extending from the surface of the plate connected to the release layer to the other surface of the plate .

The liquid accommodating groove of the embodiment of the present invention uses a fluid to balance the sides of the release layer by providing a fluid passage in the flat plate or by raising the release layer by the top height device and tilting the flat plate to the workpiece by the motor. Pressure, which in turn eliminates low pressure between the release layer and the plate. Therefore, the liquid accommodating groove and the three-dimensional printing device of the embodiment of the invention can make the workpiece easy to be separated from the release layer, thereby avoiding problems such as damage of the workpiece and deformation of the release layer, and can also improve the speed and stability of the three-dimensional printing. degree.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to FIG. 1 , the liquid accommodating tank 100 of the present embodiment is suitable for the three-dimensional printing apparatus to accommodate the liquid photosensitive material 10 , and the liquid accommodating tank 100 includes the release layer 110 and the flat plate 130 . The release layer 110 has a workpiece forming zone R. This workpiece forming area R is the area to which the shaped beam provided by the three-dimensional printing apparatus can be irradiated. The flat plate 130 supports the release layer 110, and has a first region R1 corresponding to the workpiece forming region R and a second region R2 located beside the first region R1. The second region R2 has at least one fluid passage 133 connected from the flat plate 130. Surface 134 of release layer 110 extends to another surface of plate 130, such as surface 135 opposite surface 134.

The above-mentioned liquid accommodating groove 100 further includes a plurality of side walls 120 connected to the periphery of the release layer 110, wherein an accommodating space 121 is formed between the side wall 120 and the release layer 110 to accommodate the liquid photosensitive material 10 . In addition, the release layer 110 is a flexible film made of a soft material and can transmit light. The release layer 110 also has, for example, a low surface adhesion property. Specifically, the material of the release layer 110 may be silicone or polytetrafluoroethylene, but is not limited thereto.

The second region R2 is, for example, circumferentially disposed around the first region R1. In another embodiment, the second region R2 on the flat plate 130 may also be located at one side of the first region R1. In addition, in the present embodiment, the number of fluid passages 133 in the second zone R2 is taken as an example. In other embodiments, a plurality of fluid passages 133 may be provided in the second zone R2. In addition, the material of the flat plate 130 may be glass, plastic, acrylic or other materials capable of providing sufficient supporting force. The plate 130 is, for example, a light transmissive plate. Fluid channel 133 may extend from surface 134 of plate 130 along a linear path to surface 135 of plate 130 opposite surface 134.

Referring to FIG. 2A, the photocured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R, and the workpiece 20 is attached to the forming platform 300 of the three-dimensional printing apparatus. After the workpiece 20 is formed, the workpiece F under the surface 135 of the flat plate 130 can be caused to flow between the surface 134 of the flat plate 130 and the release layer 110 via the fluid passage 133 by lifting the workpiece 20 from the forming platform 300, thereby eliminating the release. The low pressure between layer 110 and plate 130 further balances the pressure on both sides of release layer 110. While the pulling force applied by the lifting workpiece 20 only needs to overcome the adhesion between the workpiece 20 and the release layer 110, the workpiece 20 can be separated from the release layer 110, and the liquid photosensitive material 10 is filled in the workpiece 20 and the release layer. Between 110, in order to proceed to the next layer of printing steps. Therefore, the liquid accommodating groove 100 of the present embodiment can greatly reduce the pulling force required to separate the workpiece 20 from the release layer 110, thereby avoiding problems such as damage of the workpiece 20 and deformation of the release layer 110.

Referring to FIG. 2B , in another embodiment, the liquid accommodating groove 100 a may further include a fluid driving device 140 , such as a motor, which is coupled to the fluid passage 133 to drive the fluid F into and out of the fluid passage 133 . Specifically, after the workpiece 20 of each layer is formed, the fluid drive device 140 drives the fluid F into the fluid passage 133 to cause the fluid F to flow between the surface 134 of the plate 130 and the release layer 110, whereby the release layer 110 can be eliminated. The low pressure phenomenon with the plate 130 further balances the pressure on both sides of the release layer 110 to facilitate separation of the workpiece 20 from the release layer 110. Thereafter, the fluid driving device 140 can further discharge the fluid F between the surface 134 of the flat plate 130 and the release layer 110 via the fluid passage 133, so that the release layer 140 can be easily flattened to the flat plate 130, and the fluid F is prevented from remaining on the flat plate 130. The surface 134 is spaced between the release layer 110 to maintain the accuracy of subsequent printing. Fluid F can be a gas, and the gas species can be air, nitrogen, or other gases commonly used in process technology. In addition, the fluid F can also be replaced with a liquid, such as water, as desired.

In other embodiments, fluid channel 133a may also extend from the surface 134 of plate 130a along the meandering path to surface 135 of plate 130a opposite surface 134, as shown in Figure 3A. Fluid passage 133b may also extend from surface 134 of plate 130b to surface 136 of plate 130b that is coupled to surface 134, as shown in Figure 3B.

Referring to FIG. 4, another embodiment of the present invention provides a liquid receiving tank 100b suitable for use in a three-dimensional printing apparatus to accommodate a liquid photosensitive material 10. The liquid receiving tank 100b includes a release layer 110, a flat plate 130c, and at least one top height device 150. The liquid accommodating groove 100b may further include a plurality of side walls 120, wherein the detailed configuration of the release layer 110 and the side wall 120 is similar to the above embodiment, and details are not described herein again. The main difference between the liquid accommodating groove 100b of the present embodiment and the liquid accommodating groove 100 is that the flat plate 130c supporting the surface 112 of the release layer 110 does not have the above-mentioned fluid passage, and the top device 150 is disposed beside the flat plate 130c, and The surface 112 of the release layer 110 is abutted. The top height device 150 is used to top the release layer 110 to cause at least a portion of the release layer 110 to separate from the plate 130c.

4, the top height device 150 is two, and is symmetrically disposed on both sides of the flat plate 130c. The top height device 150 may also be one, disposed on one side of the flat plate 130c (not shown). The top height device 150 may be more than one, and is disposed around the flat plate 130c (not shown). The top height device 150 may be disposed around the flat plate 130c as described above, but is not limited thereto.

Referring to FIG. 5, after the liquid photosensitive material 10 is irradiated to form the workpiece 20, the top device 150 is moved to the surface 112 of the top release layer 110, and the release layer 110 is raised and the release layer 110 is separated from the plate 130c. In this way, the fluid F flows between the flat plate 130c and the surface 112 of the release layer 110, thereby eliminating the low pressure phenomenon between the release layer 110 and the flat plate 130cc, thereby balancing the pressure on both sides of the release layer 110, so that The tensile force applied by the separation workpiece 20 and the release layer 110 can be effectively reduced to avoid problems such as damage to the workpiece 20 and deformation of the release layer 110. In addition, the jacking device 150 can also be applied to embodiments in which the plate has fluid passages.

Referring to FIG. 6, an embodiment of the present invention provides a three-dimensional printing device 400, which includes a light source device 200, the above-described forming platform 300, and one of the liquid receiving grooves described in the above embodiments, and FIG. 6 is The liquid accommodating tank 100 shown in FIG. 1 is taken as an example. The liquid accommodating tank 100 is for accommodating the liquid photosensitive material 10, and the light source device 200 is disposed under the liquid accommodating groove 100 to provide the shaped light beam I to pass through the flat plate 130 and the release layer 110 to illuminate the workpiece forming region R. The light source device 200 is, for example, a digital light processing (DLP) projection device or other types of projection devices (such as LCOS, LCD), but is not limited thereto. The forming platform 300 and the flat plate 130 are disposed on opposite sides of the release layer 110 of the liquid receiving groove 100, wherein the forming platform 300 is adapted to move away from and away from the release layer 110.

After the liquid photosensitive material 10 is illuminated, the workpiece 20 is formed in the workpiece forming region R, and the workpiece 20 is attached to the forming platform 300. The forming platform 300 moves away from the release layer 110 to cause the workpiece 20 to move up and separate from the release layer 110. During the separation of the workpiece 20 from the release layer 110, the fluid passage 133 can eliminate the low pressure phenomenon between the release layer 110 and the flat plate 130, thereby balancing the pressure between the two sides of the release layer 110. Therefore, the applied tensile force only needs to overcome the adhesion between the workpiece 20 and the release layer 110, so that the workpiece 20 and the release layer 110 can be separated, so that the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110. For subsequent printing steps.

Referring to FIG. 7 , another embodiment of the present invention provides a three-dimensional printing device 400 a that includes a liquid receiving groove 100 and a motor 160 . The liquid accommodating tank 100 houses the liquid photosensitive material 10. The liquid receiving tank 100 includes a release layer 110 and a flat plate 130. The liquid accommodating groove 100 may further include a plurality of side walls 120, wherein the detailed configuration of the release layer 110, the side walls 120, and the flat plate 130 is similar to the embodiment shown in FIGS. 1 to 3B, and details are not described herein again. The main difference between the three-dimensional printing apparatus 400a of the present embodiment and the above-described three-dimensional printing apparatus 400 is that the fluid passages 133 passing through the flat plate 130 supporting the release layer 110 are combined with the three components of the release layer 110, the side wall 120 and the flat plate 130. The lower motor 160 achieves the goal of facilitating separation of the workpiece 20 from the release layer 110.

In the present embodiment, the motor 160 is disposed on the side wall 120, for example, and is disposed on the other side wall 120 of the pivot 162. However, the present invention is not limited thereto. In other embodiments, the motor 160 is included. For example, it is disposed at one end of the opposite ends of the flat plate 130 of the liquid accommodating groove 100, and the arrangement position of the motor 160 may be disposed on the side wall 120 of the different side as needed according to actual conditions.

Please refer to FIG. 7A and FIG. 7B . FIG. 7A is a schematic diagram of the separation of the flat plate 130 from the release layer 110 . FIG. 7B is a schematic view of the workpiece 20 in the liquid receiving tank 100 separated from the release layer 110. As shown in Fig. 7A, the photocured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R, which is attached to the forming platform 300 of the three-dimensional printing apparatus. After the workpiece 20 is formed, one of the side walls 120 is pulled down by the motor 160, and the other side wall 120 starts to rotate along the pivot 162 and drives the flat plate 130. At this time, at least a part of the flat plate 130. The distance G1 is gradually separated from the release layer 110 and the workpiece 20, so that the surface 134 of the plate 130 is inclined to the contact surface 201 of the workpiece 20, and thus has an angle between the surface 134 of the plate 130 and the contact surface 201 of the workpiece 20. Θ1 causes fluid F under the surface 135 of the plate 130 to flow between the surface 134 of the plate 130 and the release layer 110 via the fluid channel 133 and the edge of the plate 130, thereby eliminating the low pressure between the release layer 110 and the plate 130. The phenomenon further balances the pressure on both sides of the release layer 110.

As shown in FIG. 7B, the release layer 110 generates a shear component. At this time, the workpiece 20 is lifted by the forming platform 300, and the shear component separates the release layer 110 from the workpiece 20 along the contact surface 201. The liquid photosensitive material 10 is then filled between the workpiece 20 and the release layer 110 for the next printing step. It is worth mentioning that, since the three-dimensional printing apparatus 400a of the present embodiment simultaneously passes through the fluid passage 133 of the flat plate 130 and the motor 160 to separate the workpiece 20 from the release layer 110, the workpiece 20 can be greatly reduced. The release layer 110 separates the tensile force to be applied to avoid damage to the workpiece 20 and deformation of the release layer 110, and can also lift the workpiece 20 from the release layer 110 at a faster speed when the workpiece 20 is lifted up. Separation effectively reduces the time required to form the workpiece 20, and the yield for large-area workpiece formation is also greatly improved.

In the present embodiment, the angle θ1 between the surface 134 of the flat plate 130 and the contact surface 201 of the workpiece 20 is, for example, between 0 and 5 degrees, but the invention is not limited thereto, in an embodiment. The angle θ1 ranges, for example, between 0 degrees and 10 degrees. In another embodiment, the included angle θ1 ranges, for example, between 0 and 30 degrees. In the present embodiment, the distance G1 between at least a portion of the flat plate 130 and the workpiece 20 is, for example, between 0 mm and 15 mm, but the invention is not limited thereto. In an embodiment, The pitch G1 ranges, for example, between 0 mm and 20 mm. In another embodiment, the pitch G1 ranges, for example, between 0 mm and 30 mm. In addition, the motor 160 of this embodiment is, for example, a stepping motor, but the invention is not limited thereto. In an embodiment, the same function as the motor 160 can also be realized by other traction devices, such as a voice coil motor, a spring or a piezoelectric material, but the invention is not limited thereto, and the tablet can be caused by any The surface 134 of the 130 can be used with elements that are inclined to the contact surface 201 of the workpiece 20.

Please refer to FIG. 8. FIG. 8 is a schematic diagram of the separation of the flat plate 130 from the release layer 110 according to another embodiment of the present invention. As shown in FIG. 8, the photocured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R and is attached to the forming platform 300. After the workpiece 20 is formed, the workpiece 20 is lifted by the forming platform 300. At this time, the flat plate 130 is gradually separated from the release layer 110, so that the fluid F located below the surface 135 of the flat plate 130 flows into the surface 134 of the flat plate 130 via the fluid passage 133. Between the release layer 110 and the release layer 110, the low pressure between the release layer 110 and the plate 130 is eliminated, thereby balancing the pressure on both sides of the release layer 110.

After the workpiece 130 is lifted on the shaped platform 300 shown in FIG. 8 to separate the flat plate 130 from the release layer 110, one of the side walls 120 is pulled down by the motor 160, and the other side wall 120 is removed. Then, the plate 130 is driven to rotate along the pivot 162. At this time, the surface 134 of the plate 130 is gradually inclined to the contact surface 201 of the workpiece 20 to have an included angle θ1, and at the same time, the workpiece 20 is separated from the release layer 110 to make a liquid. The photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. The operation of the pull-down pulling and the action of separating the workpiece 20 from the release layer 110 are shown in FIGS. 7A and 7B.

Referring to FIG. 9, another embodiment of the present invention provides a three-dimensional printing device 400b, which includes a liquid receiving groove 100 and a motor 160b. The liquid accommodating tank 100 houses the liquid photosensitive material 10. The liquid receiving tank 100 includes a release layer 110 and a flat plate 130. The liquid accommodating groove 100 may further include a plurality of side walls 120, wherein the detailed configuration of the release layer 110, the side walls 120, and the flat plate 130 is similar to the embodiment shown in FIGS. 1 to 3B, and details are not described herein again. The main difference between the stereoscopic column device 400b of the present embodiment and the above-described three-dimensional printing device 400a is that the motor 160b is disposed on the molding platform 300. In addition, the three-dimensional printing apparatus 400b of the present embodiment also achieves the purpose of facilitating separation of the workpiece 20 from the release layer 110 by the fluid passage 133 of the flat plate 130 supporting the release layer 110 and the motor 160b located on the molding platform 300.

In the present embodiment, the motor 160b is disposed at one end of the molding platform 300, for example, and the pivot 164 is disposed at the opposite end of the molding platform 300, but the invention is not limited thereto.

Please refer to FIG. 9A and FIG. 9B. FIG. 9A is a schematic diagram of the separation of the flat plate 130 from the release layer 110 according to another embodiment of the present invention. FIG. 9B is a schematic view showing the separation of the workpiece 20 in the liquid receiving tank 100 from the release layer 110 according to another embodiment of the present invention. As shown in FIG. 9A, the photocured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R, and the workpiece 20 is attached to the forming platform 300. After the workpiece 20 is formed, one end of the forming platform 300 is pulled up by the motor 160b, and the other end of the forming platform 300 starts to rotate along the pivot 164 and drives the forming platform 300. At this time, the flat plate 130 At least a portion is gradually separated from the release layer 110 to create a spacing G2 from the workpiece 20 such that the surface 134 of the plate 130 is inclined to the contact surface 201 of the workpiece 20 that is in contact with the release layer 110, and thus at the surface 134 of the plate 130. The contact surface 201 of the workpiece 20 has an angle θ2 therebetween, so that the fluid F located below the surface 135 of the flat plate 130 flows between the surface 134 of the flat plate 130 and the release layer 110 via the fluid passage 133 and the edge of the flat plate 130, thereby eliminating The low pressure between the release layer 110 and the plate 130 further balances the pressure on both sides of the release layer 110.

As shown in FIG. 9B, the release layer 110 generates a shear component. At this time, the workpiece 20 is lifted by the forming platform 300 to separate the workpiece 20 from the release layer 110, and then the liquid photosensitive material 10 is filled. Between the workpiece 20 and the release layer 110 for the next layer of printing steps. It is to be noted that since the three-dimensional printing apparatus 400b of the present embodiment simultaneously passes through the fluid passage 133 of the flat plate 130 and the motor 160b to separate the workpiece 20 from the release layer 110, the workpiece 20 can be greatly reduced. The release layer 110 separates the tensile force to be applied to avoid damage to the workpiece 20 and deformation of the release layer 110, and can also lift the workpiece 20 from the release layer 110 at a faster speed when the workpiece 20 is lifted up. Separation effectively reduces the time required to form the workpiece 20, and the yield for large-area workpiece formation is also greatly improved.

In the present embodiment, the angle θ2 between the surface 134 of the plate 130 and the contact surface 201 of the workpiece 20 ranges, for example, between 0 degrees and 5 degrees, but the invention is not limited thereto, in an embodiment. The angle θ2 ranges, for example, between 0 degrees and 10 degrees. In another embodiment, the included angle θ2 ranges, for example, between 0 and 30 degrees. In the present embodiment, the distance G2 between at least a portion of the flat plate 130 and the workpiece 20 is, for example, between 0 mm and 15 mm, but the invention is not limited thereto, and in other embodiments. The spacing G2 ranges, for example, between 0 mm and 20 mm. In another embodiment, the spacing G2 ranges, for example, between 0 mm and 30 mm. In addition, the motor 160b of this embodiment is, for example, a stepping motor, but the invention is not limited thereto. It should be noted that in other embodiments, other traction devices, such as a voice coil motor, a spring, or a piezoelectric material, may be used to achieve the same function as the motor 160b, but the invention is not limited thereto. Any component that can cause the workpiece 20 contact surface 201 to be inclined to the surface 134 of the plate 130 can be used.

Please refer to FIG. 10. FIG. 10 is a schematic diagram showing the separation of the flat plate 130 from the release layer 110 according to another embodiment of the present invention. As shown in FIG. 10, the photocured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R and is attached to the forming platform 300. After the workpiece 20 is formed, the workpiece 20 is lifted by the forming platform 300. At this time, the flat plate 130 is gradually separated from the release layer 110, so that the fluid F located below the surface 135 of the flat plate 130 flows into the surface 134 of the flat plate 130 via the fluid passage 133. Between the release layer 110 and the release layer 110, the low pressure between the release layer 110 and the plate 130 is eliminated, thereby balancing the pressure on both sides of the release layer 110.

After the workpiece 130 is lifted on the shaped platform 300 shown in FIG. 10, the flat plate 130 is separated from the release layer 110, and then one end of the forming platform 300 is pulled up by the motor 160b, and the forming platform 300 is further One end starts to rotate along the pivot 164 and drives the forming platform 300. At this time, the contact surface 201 of the workpiece 20 attached to the forming platform 300 is gradually inclined to the surface 134 of the flat plate 130 to have an included angle θ2, and simultaneously the workpiece 20 Separating from the release layer 110, the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. The operation of the pull-up pulling and the operation of separating the workpiece 20 from the release layer 110 are shown in FIGS. 9A and 9B.

It should be noted that the three-dimensional printing device 400a shown in FIG. 7 to FIG. 8 and the three-dimensional printing device 400b shown in FIG. 9 to FIG. 10 can be applied to the structure of the three-dimensional printing device 400 shown in FIG. 6. Among them.

An embodiment of the present invention provides a three-dimensional printing method for eliminating a low pressure region between a release layer and a plate for supporting the release layer during the three-dimensional printing process. The method includes gradually introducing fluid from a portion of the low pressure zone to the entire low pressure zone. Specifically, the fluid F can be gradually introduced into the entire low pressure region from the portion of the communication fluid passage 133 of the low pressure region between the release layer 110 and the flat plate 130 by the fluid passage 133 of the plate 130 as shown in FIG. 2A, and/or As shown in FIG. 5, by at least one top device 150 disposed beside the flat plate 130c, the surface 112 of the release layer 110 is abutted to lift the release layer 112 to promote the fluid F to be gradually introduced from the edge of the low pressure region. The entire low pressure zone. In addition, the flat plate 130 and the release layer 100 may be disposed on the motor 160 disposed on the sidewall 120 (or the flat plate 130) or the motor 160b disposed on the molding platform 300 as shown in FIG. 7 or FIG. Between the angle θ1 (or the angle θ2), the workpiece 20 is caused to separate from the release layer 110 more quickly.

In combination with the above embodiments, the embodiment of the present invention eliminates the low pressure phenomenon between the release layer and the flat plate through the fluid passage on the flat plate or through the top height device, thereby effectively reducing the pulling force required to separate the workpiece, thereby avoiding the workpiece being subjected to the workpiece. Loss, release layer deformation and other issues, but also can improve the speed and stability of three-dimensional printing, and the yield of large-area workpiece formation will also be greatly improved.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and it is intended to be a part of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

10‧‧‧Liquid photosensitive materials
20‧‧‧Workpiece
100, 100a, 100b‧‧‧Liquid accommodating tank
110‧‧‧ release layer
112‧‧‧ surface
120‧‧‧ side wall
121‧‧‧ accommodating space
130, 130a, 130b, 130c‧‧‧ tablets
133, 133a, 133b‧‧‧ fluid passage
134, 135, 136‧‧‧ surface
140‧‧‧Fluid drive
150‧‧‧ top height device
160, 160b‧‧‧ motor
162, 164‧‧ ‧ pivot
200‧‧‧Light source device
201‧‧‧Contact surface
300‧‧‧ forming platform
400, 400a, 400b‧‧‧ three-dimensional printing device
F‧‧‧ fluid
G1, G2‧‧‧ spacing
I‧‧‧forming beam
R‧‧‧Working area
R1‧‧‧ first district
R2‧‧‧The second zone θ1, θ2‧‧‧ angle

1 is a schematic view of a liquid receiving tank according to an embodiment of the present invention; FIG. 2A is a schematic view showing the workpiece in the liquid receiving tank of FIG. 1 separated from the release film; FIG. 2B illustrates another embodiment of the present invention. FIG. 3A to FIG. 3B are schematic diagrams of a flat plate according to another embodiment of the present invention; FIG. 4 is a schematic view showing a liquid receiving groove according to another embodiment of the present invention; FIG. 5 is a schematic diagram of the operation of the embodiment of FIG. 4; and FIG. 6 is a schematic diagram of a three-dimensional printing apparatus according to an embodiment of the invention. 7 is a schematic view of a three-dimensional printing device according to another embodiment of the present invention; FIG. 7A is a schematic view showing the separation of the flat plate from the release layer; FIG. 7B is a view showing the separation of the workpiece in the liquid receiving groove from the release layer. FIG. 8 is a schematic view showing a separation of a flat plate and a release layer according to another embodiment of the present invention; FIG. 9 is a schematic view showing a three-dimensional printing device according to another embodiment of the present invention; FIG. 9A is a view showing another embodiment of the present invention; FIG. 9B is a schematic view showing the separation of the workpiece in the liquid receiving tank from the release layer according to another embodiment of the present invention; FIG. 10 is a diagram showing another embodiment of the present invention. Schematic diagram of separation from the release layer.

10‧‧‧Liquid photosensitive materials

100‧‧‧Liquid accommodating tank

110‧‧‧ release layer

120‧‧‧ side wall

121‧‧‧ accommodating space

130‧‧‧ tablet

R‧‧‧Working area

R1‧‧‧ first district

R2‧‧‧Second District

133‧‧‧ fluid passage

134, 135‧‧‧ surface

Claims (12)

A liquid accommodating groove is suitable for use in a three-dimensional printing device for accommodating a liquid photosensitive material, the liquid accommodating groove comprising: a release layer having a workpiece forming region; and a flat plate supporting the release layer And having a first region corresponding to the forming region of the workpiece and a second region adjacent to the first region, the panel having at least one fluid passage extending from a surface of the flat plate connected to the release layer to the The other surface of the plate. The liquid receiving tank according to claim 1, further comprising a fluid driving device connecting the at least one fluid passage to drive a fluid into and out of the at least one fluid passage. The liquid accommodating tank of claim 2, wherein the fluid is a gas or a liquid. The liquid accommodating tank of claim 1, wherein the fluid passage satisfies one of the following conditions: (1) extending from the surface of the flat plate along a straight path to the other surface of the flat plate; (2) The surface from the plate extends along a meandering path to the other surface of the plate. A liquid accommodating groove is suitable for use in a three-dimensional printing device for accommodating a liquid photosensitive material, the liquid accommodating groove comprising: a release layer having a workpiece forming region; and a plate supporting the release layer a surface; and at least one top device disposed adjacent to the plate and abutting the surface of the release layer, the at least one top device for raising the release layer to promote at least a portion of the release layer Separated from the plate. The liquid accommodating tank according to claim 5, wherein the top height device is plural, and the top height devices are disposed symmetrically or circumferentially around the flat plate. A three-dimensional printing device, comprising: the liquid accommodating groove according to any one of claims 1 to 6, wherein the liquid accommodating groove comprises a forming platform adapted to face away from and close to The direction of movement of the release layer; and a motor for pulling the liquid receiving groove or the forming platform such that a surface of the plate is inclined to a contact surface of a workpiece to have an included angle. The three-dimensional printing device of claim 7, wherein the included angle satisfies one of the following conditions: (1) between 0 and 5 degrees; (2) between 0 and 10 degrees; (3) Between 0 and 30 degrees. The three-dimensional printing device of claim 7, wherein at least a portion of the plate has a spacing from the workpiece, the spacing satisfying one of the following conditions: (1) the spacing ranges from 0 mm. And 15 mm; (2) the spacing ranges between 0 mm and 20 mm; (3) the spacing ranges between 0 mm and 30 mm. A method of three-dimensional printing for eliminating a low pressure region between a release layer and a plate for supporting the release layer during the three-dimensional printing of a workpiece, the method comprising: discharging a fluid from the low pressure region The part is gradually introduced into the entire low pressure zone. The method of claim 10, wherein the method comprises at least one of the following steps: gradually introducing the fluid from a portion of the low pressure region communicating with the fluid passage through a fluid passage of the plate a low pressure region; and at least one top device disposed adjacent to the flat plate, a surface of the release layer is abutted to raise the release layer to urge the fluid to gradually introduce the entire low pressure from the edge of the low pressure region In the district. The three-dimensional printing method of claim 10 or 11, wherein the method further comprises the step of: having an angle between the flat plate and the workpiece by pulling of a motor.