CN106926449B - Liquid containing tank, three-dimensional line printing device and three-dimensional line printing method - Google Patents
Liquid containing tank, three-dimensional line printing device and three-dimensional line printing method Download PDFInfo
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- CN106926449B CN106926449B CN201610626787.1A CN201610626787A CN106926449B CN 106926449 B CN106926449 B CN 106926449B CN 201610626787 A CN201610626787 A CN 201610626787A CN 106926449 B CN106926449 B CN 106926449B
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- release layer
- plate
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- flat plate
- fluid
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- 239000007788 liquid Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007639 printing Methods 0.000 title claims description 23
- 239000012530 fluid Substances 0.000 claims abstract description 60
- 238000010146 3D printing Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
A liquid containing groove is suitable for a three-dimensional printing device and is used for containing a liquid photosensitive material, and the liquid containing groove comprises a release layer and a flat plate. The release layer is provided with a workpiece forming area. The flat plate supports the release layer and is provided with a first area corresponding to the workpiece forming area and a second area beside the first area, and at least one fluid channel is arranged in the flat plate and extends from the surface of the flat plate connected to the release layer to the other surface of the flat plate. Therefore, the workpiece can be easily separated from the release film. In addition, the embodiment of the invention further provides another liquid containing tank, a three-dimensional printing device and a three-dimensional printing method.
Description
Technical Field
The present invention relates to a line printing apparatus, and more particularly to a three-dimensional line printing apparatus, a liquid container thereof and a line printing method thereof.
Background
In a conventional photo-curing three-dimensional printing device, a release film and a flat plate supporting the release film are disposed at the bottom of a receiving groove for receiving photosensitive resin, and during printing a workpiece, the photosensitive resin is cured and attached to the release film, thereby forming one layer of the workpiece. In order to continue the printing of the next layer of work piece, it is necessary to apply force to pull up the work piece to separate the work piece and the release film, so that the unhardened photosensitive resin is filled between the work piece and the release film. However, in the conventional three-dimensional printing device, a closed region is formed between the release film and the flat plate, so that a low pressure region is generated during the separation of the work piece, and the work piece is not easily separated from the release film.
Although the workpiece and the release film can be separated by applying a larger pulling force, the workpiece is often damaged due to the failure of the workpiece to be supported or the release film is excessively pulled and deformed due to the application of the larger pulling force.
Disclosure of Invention
The embodiment of the invention provides a three-dimensional printing device, which enables a workpiece to be easily separated from a release layer.
The liquid containing groove provided by the embodiment of the invention is suitable for a three-dimensional printing device to contain a liquid photosensitive material, and the liquid containing groove comprises a release layer and a flat plate. The release layer is provided with a workpiece forming area. The flat plate supports the release layer and is provided with a first area corresponding to the workpiece forming area and a second area beside the first area, and the flat plate is provided with at least one fluid channel which extends from the surface of the flat plate connected to the release layer to the other surface of the flat plate.
The liquid containing tank of the embodiment of the invention is characterized in that the fluid channel is arranged on the flat plate or the jacking device jacks up the release layer and inclines the flat plate to the workpiece by the motor, so that the fluid is used for balancing the pressure at two sides of the release layer, and the low pressure phenomenon between the release layer and the flat plate is further eliminated. Therefore, the liquid containing groove and the three-dimensional line printing device provided by the embodiment of the invention can enable the workpiece to be easily separated from the release layer, so that the problems of workpiece damage, release layer deformation and the like are avoided, and the speed and the stability of three-dimensional line printing can be improved.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic view illustrating a liquid container according to an embodiment of the invention;
FIG. 2A is a schematic view illustrating the separation of the workpiece in the liquid container of FIG. 1 from the release film;
FIG. 2B is a schematic view showing that the workpiece in the liquid container according to another embodiment of the present invention is separated from the release film
Schematic diagram of ion;
FIGS. 3A-3B are schematic diagrams of a plate according to another embodiment of the present invention;
FIG. 4 is a schematic view of a liquid container according to another embodiment of the invention;
FIG. 5 is an operation diagram of the embodiment of FIG. 4; and
FIG. 6 is a schematic view of a three-dimensional printing apparatus according to an embodiment of the invention.
FIG. 7 is a schematic view of a three-dimensional printing apparatus according to another embodiment of the present invention;
FIG. 7A is a schematic view showing the separation of the plate from the release layer;
FIG. 7B is a schematic view illustrating the separation of the workpiece in the liquid accommodating groove from the release layer;
FIG. 8 is a schematic diagram illustrating the separation of a plate from a release layer according to another embodiment of the invention;
FIG. 9 is a schematic view of a three-dimensional printing apparatus according to another embodiment of the present invention;
FIG. 9A is a schematic view showing the separation of a plate and a release layer according to another embodiment of the present invention;
FIG. 9B shows another embodiment of the present invention separating the workpiece in the liquid container from the release layer
A schematic diagram of (a);
FIG. 10 is a schematic view showing the separation of the plate and the release layer according to another embodiment of the present invention;
Detailed Description
Referring to fig. 1, the liquid container 100 of the present embodiment is suitable for a three-dimensional printing apparatus to contain a liquid photosensitive material 10, and the liquid container 100 includes a release layer 110 and a plate 130. The release layer 110 has a workpiece forming region R. The workpiece forming region R is a region to which the shaped beam provided by the stereo printing apparatus can be irradiated. The 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 beside the first region R1, the second region R2 having at least one fluid passage 133 extending from a surface 134 of the plate 130 connected to the release layer 110 to another surface of the plate 130, such as a surface 135 opposite to the surface 134.
The liquid container 100 further includes a plurality of sidewalls 120, the sidewalls 120 are connected to the periphery of the release layer 110, wherein a containing space 121 is formed between the sidewalls 120 and the release layer 110 for containing 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 a low surface tack property, for example. Specifically, the release layer 110 may be made of silicone or teflon, but not limited thereto.
The second region R2 is, for example, disposed around the first region R1. in another embodiment, the second region R2 on the plate 130 can also be located at one side of the first region R1. In addition, in the present embodiment, the number of the fluid passages 133 in the second region R2 is exemplified by one. In other embodiments, a plurality of fluid passages 133 may be provided in the second region R2. In addition, the plate 130 may be made of glass, plastic, acryl or other materials capable of providing sufficient supporting force. The plate 130 is, for example, a light-transmitting plate. Fluid channel 133 may extend along a linear path from a surface 134 of plate 130 to a surface 135 of plate 130 opposite surface 134.
Referring to FIG. 2A, the photo-cured liquid photosensitive material 10 forms a workpiece 20 in a workpiece forming region R, and the workpiece 20 is attached to a forming platform 300 of a three-dimensional printing apparatus. After forming the workpiece 20, the workpiece 20 is lifted up by the forming platform 300, so that the fluid F under the surface 135 of the plate 130 flows into between the surface 134 of the plate 130 and the release layer 110 through the fluid channel 133, thereby eliminating the low pressure phenomenon between the release layer 110 and the plate 130, and further balancing the pressure on both sides of the release layer 110. The pulling force applied by lifting the workpiece 20 only needs to overcome the adhesion between the workpiece 20 and the release layer 110, so as to separate the workpiece 20 from the release layer 110, and the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. Therefore, the liquid containing tank 100 of the present embodiment can greatly reduce the pulling force required to separate the workpiece 20 from the release layer 110, so as to avoid the problems of damage to the workpiece 20, deformation of the release layer 110, and the like.
Referring to fig. 2B, in another embodiment, the liquid container 100a further includes a fluid driving device 140, such as a motor, and the fluid driving device 140 is connected to the fluid channel 133 to drive the fluid F into and out of the fluid channel 133. Specifically, after the workpiece 20 on each layer is formed, the fluid driving device 140 drives the fluid F to enter the fluid channel 133, so that the fluid F flows between the surface 134 of the plate 130 and the release layer 110, thereby eliminating the low pressure phenomenon between the release layer 110 and the plate 130, and further balancing the pressure on both sides of the release layer 110, so as to separate the workpiece 20 from the release layer 110. Then, the fluid driving device 140 further discharges the fluid F between the surface 134 of the plate 130 and the release layer 110 through the fluid channel 133, so that the release layer 140 is easily attached to the plate 130, and the fluid F is prevented from remaining between the surface 134 of the plate 130 and the release layer 110, thereby maintaining the accuracy of the subsequent printing. The fluid F may be a gas, and the gas species may be air, nitrogen, or any other gas commonly used in the processing arts. Furthermore, the fluid F may also be replaced by a liquid, such as water, as desired.
In other embodiments, the fluid channel 133A may also extend along a serpentine path from the surface 134 of the plate 130a to the surface 135 of the plate 130a opposite the surface 134, as shown in FIG. 3A. Fluid channel 133B may also extend from surface 134 of plate 130B to surface 136 of plate 130B that is contiguous with surface 134, as shown in fig. 3B.
Referring to fig. 4, another embodiment of the present invention provides a liquid container 100b, which is suitable for a three-dimensional printing apparatus to contain a liquid photosensitive material 10. The liquid container 100b includes a release layer 110, a plate 130c and at least one lifting device 150. The liquid container 100b may further include a plurality of sidewalls 120, wherein the release layer 110 and the sidewalls 120 have similar detailed structures as those of the above embodiments, and are not described herein again. The main difference between the liquid containing groove 100b of the present embodiment and the liquid containing groove 100 is that the flat plate 130c supporting the surface 112 of the release layer 110 does not have the fluid channel, and the lifting device 150 is disposed beside the flat plate 130c and abuts against the surface 112 of the release layer 110. The lifting device 150 is used for lifting the release layer 110 to facilitate at least a portion of the release layer 110 to be separated from the plate 130 c.
In fig. 4, two raising devices 150 are provided and are symmetrically disposed on both sides of the plate 130 c. The lifting device 150 may be one, and is disposed on one side of the plate 130c (not shown). The lifting device 150 may be a plurality of devices, and is disposed around the flat plate 130c (not shown). The jacking 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 lifting device 150 moves upward to abut against the surface 112 of the release layer 110, and lifts the release layer 110 to separate the release layer 110 from the plate 130 c. In this way, the fluid F flows into the space between the plate 130c and the surface 112 of the release layer 110, so as to eliminate the low pressure phenomenon between the release layer 110 and the plate 130cc, and further balance the pressure on the two sides of the release layer 110, so that the pulling force applied to separate the workpiece 20 and the release layer 110 can be effectively reduced, thereby avoiding the problems of damage to the workpiece 20, deformation of the release layer 110, and the like. In addition, the jacking device 150 may also be applied to the above-mentioned embodiments in which the flat plate has a fluid passage.
Referring to fig. 6, an embodiment of the invention provides a three-dimensional printing apparatus 400, which includes a light source apparatus 200, the forming platform 300 and one of the liquid accommodating grooves described in the embodiments, and fig. 6 is an example of the liquid accommodating groove 100 shown in fig. 1. The liquid containing tank 100 is used for containing the liquid photosensitive material 10, and the light source device 200 is disposed below the liquid containing tank 100 to provide a shaped light beam I to pass through the flat plate 130 and the release layer 110 to irradiate 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 (e.g., LCOS, LCD), but not limited thereto. The forming platform 300 and the plate 130 are disposed on opposite sides of the release layer 110 of the liquid container 100, wherein the forming platform 300 is adapted to move in a direction away from and close to the release layer 110.
The liquid photosensitive material 10 is irradiated to form the workpiece 20 in the workpiece forming region R, and the workpiece 20 is attached to the forming table 300. The forming platform 300 moves away from the release layer 110 to urge the workpiece 20 to move upward and separate from the release layer 110. In the process of separating the workpiece 20 from the release layer 110, the fluid channel 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 pulling force is only required to overcome the adhesion between the workpiece 20 and the release layer 110 to separate the workpiece 20 and the release layer 110, so that the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the subsequent printing step.
Referring to fig. 7, another embodiment of the invention provides a three-dimensional printing apparatus 400a, which includes a liquid container 100 and a motor 160. The liquid container 100 contains the liquid photosensitive material 10. The liquid container 100 includes a release layer 110 and a plate 130. The liquid container 100 may further include a plurality of sidewalls 120, wherein the release layer 110, the sidewalls 120, and the flat plate 130 have similar detailed structures to those of the embodiment shown in fig. 1 to 3B, and are not described herein again. The main difference between the three-dimensional printing apparatus 400a of the present embodiment and the three-dimensional printing apparatus 400 is that the fluid channel 133 of the plate 130 supporting the release layer 110 is matched with the motor 160 located below the release layer 110, the sidewall 120 and the plate 130 to achieve the purpose of easily separating the workpiece 20 from the release layer 110.
In the present embodiment, the motor 160 is disposed on the side wall 120 and disposed on the other side wall 120 with the pivot 162, but the present invention is not limited thereto, and in other embodiments, the motor 160 is disposed on one of the two opposite ends of the flat plate 130 of the liquid container 100, and the disposition position of the motor 160 may be disposed on the side wall 120 on different sides according to the actual requirement.
Referring to fig. 7A and 7B, fig. 7A is a schematic diagram illustrating the separation of the plate 130 and the release layer 110. Fig. 7B is a schematic view illustrating the separation of the workpiece 20 in the liquid accommodating groove 100 from the release layer 110. As shown in fig. 7A, the photo-cured liquid photosensitive material 10 forms a workpiece 20 in a workpiece forming region R, and the workpiece 20 is attached to a forming platform 300 of a three-dimensional printing apparatus. After the workpieces 20 are formed, the motor 160 pulls one of the sidewalls 120 downward, and the other sidewall 120 starts to rotate along the pivot 162 and drives the plate 130, at this time, at least a portion of the plate 130 gradually separates from the release layer 110 to form a gap G1 with the workpiece 20, such that the surface 134 of the plate 130 is inclined to the contact surface 201 of the workpiece 20, and an included angle θ 1 is formed between the surface 134 of the plate 130 and the contact surface 201 of the workpiece 20, such that the fluid F under the surface 135 of the plate 130 flows into the space between the surface 134 of the plate 130 and the release layer 110 through the fluid channel 133 and the edge of the plate 130, thereby eliminating a low pressure phenomenon between the release layer 110 and the plate 130, and further balancing pressures at two sides of the release layer 110.
As shown in fig. 7B, the release layer 110 generates a shearing component, and the workpiece 20 is lifted by the forming platform 300, the shearing component will separate the release layer 110 from the workpiece 20 along the contact surface 201, and the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. It should be noted that, since the three-dimensional printing apparatus 400a of the present embodiment achieves the separation of the workpiece 20 from the release layer 110 through the fluid channel 133 of the plate 130 and the motor 160, not only can the pulling force required to separate the workpiece 20 from the release layer 110 be greatly reduced to avoid the damage of the workpiece 20 and the deformation of the release layer 110, but also the workpiece 20 can be separated from the release layer 110 at a faster speed when the workpiece 20 is lifted, so as to effectively reduce the time for forming the workpiece 20, and the yield of the large-area workpiece forming can be greatly improved.
In the embodiment, the included angle θ 1 between the surface 134 of the plate 130 and the contact surface 201 of the workpiece 20 ranges from 0 degree to 5 degrees, for example, but the invention is not limited thereto, and in one embodiment, the included angle θ 1 ranges from 0 degree to 10 degrees, for example. In another embodiment, the included angle θ 1 ranges between 0 degrees and 30 degrees, for example. In the present embodiment, the distance G1 between at least a portion of the plate 130 and the workpiece 20 is, for example, between 0 mm and 15 mm, but the present invention is not limited thereto, and in one embodiment, the distance G1 is, for example, between 0 mm and 20 mm, and in another embodiment, the distance G1 is, for example, between 0 mm and 30 mm. In addition, the motor 160 of the present embodiment is, for example, a stepping motor, but the invention is not limited thereto. In one embodiment, the same function as the motor 160 can be achieved by other traction devices, such as a voice coil motor, a spring, or a piezoelectric material, but the invention is not limited thereto, and any device that causes the surface 134 of the plate 130 to be inclined relative to the contact surface 201 of the workpiece 20 can be used.
Referring to fig. 8, fig. 8 is a schematic view illustrating a separation of a plate 130 and a release layer 110 according to another embodiment of the invention. As shown in fig. 8, the photo-cured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R and adheres to the forming table 300. After the workpiece 20 is formed, the workpiece 20 is lifted up by the forming platform 300, at this time, the plate 130 is gradually separated from the release layer 110, so that the fluid F under the surface 135 of the plate 130 flows into between the surface 134 of the plate 130 and the release layer 110 through the fluid channel 133, thereby eliminating the low pressure phenomenon between the release layer 110 and the plate 130, and further balancing the pressure at both sides of the release layer 110.
After the workpiece 20 is lifted on the forming platform 300 shown in fig. 8 to separate the plate 130 from the release layer 110, the motor 160 pulls one of the sidewalls 120 downward, and the other sidewall 120 starts to rotate along the pivot 162 and drives the plate 130, at this time, the surface 134 of the plate 130 gradually inclines to the contact surface 201 of the workpiece 20 to form an included angle θ 1, and simultaneously the workpiece 20 is separated from the release layer 110, so that the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. Fig. 7A and 7B refer to the pull-down operation and the separation of the workpiece 20 from the release layer 110.
Referring to fig. 9, another embodiment of the invention provides a three-dimensional printing apparatus 400b, which includes a liquid container 100 and a motor 160 b. The liquid container 100 contains the liquid photosensitive material 10. The liquid container 100 includes a release layer 110 and a plate 130. The liquid container 100 may further include a plurality of sidewalls 120, wherein the release layer 110, the sidewalls 120, and the flat plate 130 have similar detailed structures to those of the embodiment shown in fig. 1 to 3B, and are not described herein again. The main difference between the three-dimensional printing apparatus 400b of the present embodiment and the three-dimensional printing apparatus 400a is that the motor 160b is disposed on the forming platform 300. In addition, the three-dimensional printing apparatus 400b of the present embodiment also achieves the purpose of easily separating the workpiece 20 from the release layer 110 by the fluid channel 133 of the plate 130 supporting the release layer 110 in cooperation with the motor 160b located on the forming platform 300.
In the embodiment, the motor 160b is disposed at one end of the forming platform 300, and the pivot 164 is disposed at the other end opposite to the forming platform 300, for example, but the invention is not limited thereto.
Referring to fig. 9A and 9B, fig. 9A is a schematic view illustrating a separation of a plate 130 and a release layer 110 according to another embodiment of the invention. Fig. 9B is a schematic view illustrating the separation of the workpiece 20 in the liquid accommodating tank 100 from the release layer 110 according to another embodiment of the invention. As shown in fig. 9A, the liquid photosensitive material 10 after being cured by irradiation forms a workpiece 20 in the workpiece forming region R, and the workpiece 20 is attached to the forming table 300. After the workpiece 20 is formed, the motor 160b pulls one end of the forming platform 300 upward, 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, at least a portion of the plate 130 gradually separates from the release layer 110 to form a gap G2 with the workpiece 20, so that the surface 134 of the plate 130 is inclined to the contact surface 201 of the workpiece 20 with the release layer 110, and an included angle θ 2 is formed between the surface 134 of the plate 130 and the contact surface 201 of the workpiece 20, so that the fluid F under the surface 135 of the plate 130 flows into the space between the surface 134 of the plate 130 and the release layer 110 through the fluid channel 133 and the edge of the plate 130, thereby eliminating the low pressure phenomenon between the release layer 110 and the plate 130, and further balancing the pressure at both sides of the release layer 110.
As shown in fig. 9B, the release layer 110 generates a shearing component, and the workpiece 20 is separated from the release layer 110 by lifting the workpiece 20 by the forming platform 300, and the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. It should be noted that, since the three-dimensional printing apparatus 400b of the present embodiment achieves the separation of the workpiece 20 from the release layer 110 through the fluid channel 133 of the plate 130 and the motor 160b, not only can the pulling force required to separate the workpiece 20 from the release layer 110 be greatly reduced to avoid the damage of the workpiece 20 and the deformation of the release layer 110, but also the workpiece 20 can be separated from the release layer 110 at a faster speed when the workpiece 20 is lifted, so as to effectively reduce the time for forming the workpiece 20, and the yield of the large-area workpiece forming can be greatly improved.
In the embodiment, the included angle θ 2 between the surface 134 of the plate 130 and the contact surface 201 of the workpiece 20 is, for example, between 0 degree and 5 degrees, but the invention is not limited thereto, and in one embodiment, the included angle θ 2 is, for example, between 0 degree and 10 degrees. In another embodiment, the included angle θ 2 ranges between 0 degrees and 30 degrees, for example. In the present embodiment, the distance G2 between at least a portion of the plate 130 and the workpiece 20 is, for example, between 0 mm and 15 mm, but the present invention is not limited thereto, and in other embodiments, the distance G2 is, for example, between 0 mm and 20 mm, and in another embodiment, the distance G2 is, for example, between 0 mm and 30 mm. In addition, the motor 160b of the present embodiment is, for example, a stepping motor, but the invention is not limited thereto. It should be noted that in other embodiments, the same function as the motor 160b can be achieved by other pulling devices, such as a voice coil motor, a spring, or a piezoelectric material, but the invention is not limited thereto, and any device that can cause the contact surface 201 of the workpiece 20 to be inclined with respect to the surface 134 of the plate 130 can be used.
Referring to fig. 10, fig. 10 is a schematic view illustrating a separation of a flat plate 130 and a release layer 110 according to another embodiment of the invention. As shown in fig. 10, the photo-cured liquid photosensitive material 10 forms a workpiece 20 in the workpiece forming region R and adheres to the forming table 300. After the workpiece 20 is formed, the workpiece 20 is lifted up by the forming platform 300, at this time, the plate 130 is gradually separated from the release layer 110, so that the fluid F under the surface 135 of the plate 130 flows into between the surface 134 of the plate 130 and the release layer 110 through the fluid channel 133, thereby eliminating the low pressure phenomenon between the release layer 110 and the plate 130, and further balancing the pressure at both sides of the release layer 110.
After the workpiece 20 is lifted on the forming platform 300 shown in fig. 10 to separate the plate 130 from the release layer 110, the motor 160b pulls one end of the forming platform 300 upward, 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 contact surface 201 of the workpiece 20 attached to the forming platform 300 is gradually inclined to the surface 134 of the plate 130 to form an included angle θ 2, and the workpiece 20 is separated from the release layer 110 at the same time, so that the liquid photosensitive material 10 is filled between the workpiece 20 and the release layer 110 for the next printing step. The above-mentioned pulling-up operation and the operation of separating the workpiece 20 from the release layer 110 refer to fig. 9A and 9B.
It should be noted that the three-dimensional printing apparatus 400a shown in fig. 7 to 8 and the three-dimensional printing apparatus 400b shown in fig. 9 to 10 can be applied to the structure of the three-dimensional printing apparatus 400 shown in fig. 6.
One 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 three-dimensional printing. The method includes gradually introducing fluid from a portion of the low pressure region into the entire low pressure region. Specifically, the fluid F can be gradually introduced into the whole low-pressure region from the portion of the plate 130 communicating the low-pressure region between the release layer 110 and the plate 130 through the fluid channel 133 as shown in fig. 2A, and/or the fluid F can be gradually introduced into the whole low-pressure region from the edge of the low-pressure region by pushing the release layer 112 against the surface 112 of the release layer 110 through at least one pushing device 150 disposed beside the plate 130c as shown in fig. 5. In addition, as shown in fig. 7 or fig. 9, the motor 160 disposed on the sidewall 120 (or the plate 130) or the motor 160b disposed on the forming platform 300 may also be configured to form an included angle θ 1 (or an included angle θ 2) between the plate 130 and the release layer 100, so as to facilitate the workpiece 20 to be separated from the release layer 110 more quickly.
In summary, the embodiments of the present invention eliminate the low pressure between the release layer and the flat plate through the fluid channel on the flat plate or through the jacking device, so as to effectively reduce the pulling force required for separating the workpiece, thereby avoiding the problems of damage to the workpiece, deformation of the release layer, etc., and further improving the speed and stability of three-dimensional printing, and greatly increasing the yield of large-area workpiece forming.
Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (12)
1. A liquid container is suitable for a three-dimensional printing device to contain a liquid photosensitive material, and comprises:
a release layer having a workpiece forming region;
a plurality of side walls connected to the periphery of the release layer and surrounding to form an opening opposite to the release layer; and
a flat plate supporting the release layer and having a first region corresponding to the workpiece forming region and a second region beside the first region, wherein the flat plate has at least one fluid passage extending from one surface of the flat plate connected to the release layer to the other surface of the flat plate;
wherein a contact point between the plurality of sidewalls and the release layer is substantially lower than a contact point between the release layer and the plate, and the area of the plate is smaller than the release layer and the opening.
2. The liquid containing tank of claim 1, wherein the liquid containing tank further comprises a fluid driving device connected to the at least one fluid channel for driving a fluid into and out of the at least one fluid channel.
3. The liquid containing tank of claim 2, wherein the fluid is a gas or a liquid.
4. The liquid containing tank according to claim 1, wherein the fluid channel satisfies one of the following conditions: (1) extending from the surface of the plate along a linear path to the other surface of the plate; (2) extending from the surface of the plate to the other surface of the plate along a serpentine path.
5. A liquid container is suitable for a three-dimensional printing device to contain a liquid photosensitive material, and comprises:
a release layer having a workpiece forming region;
a plurality of side walls connected to the periphery of the release layer and surrounding to form an opening opposite to the release layer;
a flat plate supporting a surface of the release layer; and
the at least one jacking device is arranged beside the flat plate and abuts against the surface of the release layer, and the at least one jacking device is used for jacking the release layer to promote at least one part of the release layer to be separated from the flat plate;
wherein a contact point between the plurality of sidewalls and the release layer is substantially lower than a contact point between the release layer and the plate, and the area of the plate is smaller than the release layer and the opening.
6. The liquid containing tank of claim 5, wherein the plurality of the lifting devices are symmetrically or circumferentially disposed around the plate.
7. A three-dimensional line printing device comprises:
a liquid containing tank according to any one of claims 1 to 6, wherein said liquid containing tank includes a forming platform adapted to move in a direction away from and towards said release layer; and
a motor for pulling the liquid containing groove or the forming platform to enable one surface of the flat plate to be inclined to a contact surface of a workpiece to form an included angle.
8. The stereoscopic printing apparatus according to claim 7, wherein the angle satisfies the following condition: between 0 and 10 degrees.
9. The stereoscopic printing apparatus according to claim 7, wherein at least a portion of the plate has a spacing from the workpiece, the spacing satisfying the following condition: the spacing ranges between 0 and 20 mm.
10. A method for three-dimensional printing is used for eliminating a low-pressure area between a release layer and a flat plate for supporting the release layer in the process of three-dimensional printing a workpiece, wherein the periphery of the release layer surrounds a plurality of side walls, and the side walls surround to form an opening opposite to the release layer; the method comprises the following steps:
a contact point between the plurality of side walls and the release layer is substantially lower than a contact point between the release layer and the flat plate, and the area of the flat plate is smaller than that of the release layer and the opening; and
a fluid is gradually introduced from a portion of the low pressure region into the entire low pressure region.
11. The method for three-dimensional printing according to 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 into the entire low-pressure region through a fluid passage of the plate; and
the fluid is gradually guided into the whole low-pressure area from the edge of the low-pressure area by abutting against one surface of the release layer through at least one abutting device arranged beside the flat plate so as to abut against the release layer.
12. The stereoscopic printing method according to claim 10 or 11, wherein the method further comprises the steps of:
an angle is formed between the plate and the workpiece by the pulling of a motor.
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| TWI735701B (en) * | 2017-11-13 | 2021-08-11 | 揚明光學股份有限公司 | Three dimensional printing device |
| CN108943715B (en) * | 2018-06-22 | 2021-03-30 | 大族激光科技产业集团股份有限公司 | Liquid tank device, three-dimensional printing equipment with same and printing model separation method |
| CN108773067A (en) * | 2018-06-22 | 2018-11-09 | 大族激光科技产业集团股份有限公司 | Liquid bath device, the 3D printing equipment equipped with it and printer model separation method |
| CN109228343B (en) * | 2018-09-29 | 2020-07-24 | 先临三维科技股份有限公司 | 3D printing bearing platform and full-automatic printing method based on bearing platform |
| US11673326B2 (en) | 2019-03-22 | 2023-06-13 | Young Optics Inc. | Three dimensional printing apparatus |
| CN111890676B (en) * | 2019-05-05 | 2024-05-10 | 扬明光学股份有限公司 | Three-dimensional printing device |
| TWI840485B (en) * | 2019-12-31 | 2024-05-01 | 揚明光學股份有限公司 | Three dimensional printing apparatus and manufacturing method thereof |
| CN113386348B (en) * | 2020-03-13 | 2022-12-20 | 塑成科技（北京）有限责任公司 | Air pressure supply device, 3D printing air pressure supply system and 3D printing system |
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| JPH06246838A (en) * | 1993-02-26 | 1994-09-06 | Teijin Seiki Co Ltd | Optically shaping device |
| AU2012300179B2 (en) * | 2011-08-20 | 2017-08-03 | Zydex Pty Ltd | Apparatus and method for making an object |
| US9636873B2 (en) * | 2012-05-03 | 2017-05-02 | B9Creations, LLC | Solid image apparatus with improved part separation from the image plate |
| US20130312907A1 (en) * | 2012-05-23 | 2013-11-28 | Lg Display Co., Ltd. | Substrate-bonding apparatus for display device and method for manufacturing bonded substrate |
| WO2015108153A1 (en) | 2014-01-20 | 2015-07-23 | 日立オートモティブシステムズ株式会社 | Non-contact power supply apparatus and torque sensor |
| CN104191625B (en) * | 2014-09-05 | 2017-06-13 | 宁波智造数字科技有限公司 | The table assembly of DLP photocuring 3D printers |
| CN204076845U (en) * | 2014-09-05 | 2015-01-07 | 宁波市鄞州智造数字科技有限公司 | DLP photocuring 3D printer resin storage tank |
| CN104626579A (en) * | 2014-12-10 | 2015-05-20 | 苏州佳世达光电有限公司 | 3d printer |
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