TW201822996A - Three-dimensional Printer - Google Patents

Abstract

A three-dimensional printer comprises a support frame, a resin containing unit, a release unit, a light source, and a forming stage. The support frame includes a support platform with a hollow mounting region. The resin containing unit is resiliently disposed in the mounting region of the support platform, can be pressed to move downwardly, and includes a tank, a first connecting structure and a second connecting structure which are disposed at two opposite sides of the tank. The release unit includes a roller module disposed on the first connecting structure, and a driving module disposed on the support platform. The driving module has a motor and an eccentric wheel. The first connecting structure is allowed to move downwardly from a normal position to a release position where the tank is tilted and then move back to the normal position by driving the eccentric wheel to rotate for a circle so as to press a roller of the roller module during the rotation of the eccentric wheel while the first connecting structure is moved with the roller module.

Description

Three-dimensional printing device

The present invention relates to a three-dimensional printing apparatus, and more particularly to a three-dimensional printing apparatus formed by photocuring.

Three-dimensional printing technology has developed a variety of forming methods. Among them, photosensitive resin is used as a raw material, and photo-curing resin is used to form a photo-curing method (Srearolithigraphy Apparatus, SLA) and Digital Light Processing (hereinafter referred to as Digital Light Processing). DLP) technology, the light source of the SLA is laser light, and the light source of the DLP is a general light source combined with projection technology. According to the relative position of the light source and the resin tank, it can be divided into an upper-illuminated type in which the light source is irradiated from above the resin tank, and a down-illuminated type in which the light source is irradiated under the resin tank.

Generally, the forming stage of the three-dimensional printing apparatus of the down-illuminated type is located above the resin tank and can move up and down with respect to the resin tank. When the light source is irradiated under the resin tank, the photosensitive resin can be solidified between the forming stage and the resin tank. After forming a solidified layer, the solidified layer must be separated from the resin tank and the solidified layer must be maintained on the forming stage. Each of the cured layers requires separation of the cured layer from the resin bath. Since the interface between the solidified layer and the forming stage and the resin tank will have an adhesive force, if the forming stage is directly stretched vertically and the resin tank is kept stationary, the interface between the upper and lower sides of the solidified layer will be subjected to considerable pulling force, which is easy to make. The cured layer is broken. Referring to FIG. 1 and FIG. 2, at present, a mechanism for separating the solidified layer from the resin tank is fixed by springs of different elastic forces on opposite sides of the resin tank. As shown in the figure, the right side of the resin tank 91 is elastic. A spring 92, and the left side of the resin groove 91 is a second spring 93 having a small spring force. When the forming stage 94 is moved upward, the workpiece 95 which is formed by laminating the solidified layer 951 is moved upward, and the lowermost layer of the workpiece 95 is the newly cured solidified layer 951, and the resin grooves 91 are driven upward together. When the resin groove 91 is driven upward, since the force of the right first spring 92 applied to the resin groove 91 is larger than that of the second spring 93 on the left side, the resistance of the resin groove 91 moving upward is greater, and the left resistance is higher. Small, causing the resin groove 91 to be inclined, whereby the solidified layer 951 can be gradually separated from the resin groove 91 from right to left. Thus, the tensile force generated between the resin groove 91 and the solidified layer 951 can be made smaller than the tensile force between the forming stages 94 to prevent the solidified layer 951 from being broken. However, in this manner, when each layer of the solidified layer 951 is separated from the resin tank 91, the forming stage 94 must be lifted to a certain height to effect the spring tension, and then the forming stage 94 is lowered to be resined. The groove 91 is kept at a certain distance to form a new solidified layer 951, so that the forming and lowering of the stage 94 is repeated, which increases the overall process time.

In addition, Chinese Patent Publication No. CN104191625A discloses a table assembly which mainly uses an eccentric cam to act as a mounting bottom frame, and causes the mounting bottom frame together with the transparent resin groove to be inclined downward, so that the printing layer (solidified layer) and the resin The groove is detached. However, since the eccentric cams are directly in contact with the mounting frame, they are easily damaged by mutual friction, which easily affects the accuracy and reliability of the process control.

Accordingly, it is an object of the present invention to provide a three-dimensional printing apparatus that can improve process reliability.

Therefore, in some embodiments, the three-dimensional printing apparatus of the present invention comprises a support frame, a resin holding unit, a release unit, a light source unit and a forming stage. The support frame includes a support platform having a hollow mounting area. The resin receiving unit can be positioned under the pressure and elastically moved down to the supporting platform and penetrates the mounting area, and includes a tank body for accommodating the photocurable resin and having a bottom transparent portion, and respectively located in the tank body A first connecting structure and a second connecting structure on opposite sides of the two sides. The release unit includes a roller module disposed on the first connection structure, and a drive module disposed on the support platform. The driving module has a motor and an eccentric wheel connected to the motor. The eccentric wheel is located above the roller module and is controlled to rotate by the motor. The roller module has a roller that can be rotated by the eccentric wheel. By rotating the eccentric wheel one turn, the roller can be pressed against the roller and the first connecting structure is interlocked, so that the first connecting structure is moved from a normal position to a disengaged position in which the groove body is inclined. Revert to this normal position. The light source unit is located below the support platform and provides a light source for curing the resin toward the groove. The forming stage is located above the trough body for attachment to the upper end of a shaped object.

In some embodiments, the first connecting structure and the second connecting structure each have a base located in the mounting area to connect the slot, and a lateral extension of the base away from the mounting area Resisting the mounting plate portion of the bottom surface of the supporting platform, the resin receiving unit further comprises four sets of positioning components, each positioning component comprises a fixing bolt having a head and a rod, and one set is disposed on the rod The elastic member of the portion, two sets of the positioning components are disposed corresponding to the first connecting structure, and wherein the other two groups are disposed corresponding to the second connecting structure, and the rod portion of the fixing bolt of each group of the positioning assembly passes through the corresponding installation a plate portion is fixed to the support platform, and two ends of the elastic member respectively abut the head portion and the mounting plate portion to elastically support the mounting plate portion against the support platform and provide the mounting plate portion under elasticity Moved space.

In some embodiments, the slot has two sliding rails respectively protruding toward the first connecting structure and the second connecting structure, and the first connecting structure and the second connecting structure each have a sliding slot to respectively The slide rails are accommodated such that the slot body is detachably assembled with the first connection structure and the second connection structure.

In some embodiments, the roller module further has a mounting seat, and the mounting seat is disposed on the mounting plate portion of the first connecting structure, and the roller is rotatably disposed on the mounting seat.

In some embodiments, the resin housing unit further includes a connecting plate portion connecting one end of the first connecting structure and one end of the base of the second connecting structure, and the connecting plate portion and the first connection The structure and the second connecting structure together form a frame. The sliding slots extend along a first direction perpendicular to the connecting plate portion, and the entrance of each sliding slot is located at an end of the corresponding base away from the connecting plate portion.

In some embodiments, the three-dimensional printing device of the present invention comprises a support platform, a resin holding unit, a driving module, a roller module, a light source unit and a forming stage. The resin containing unit has a tank body for accommodating the photocurable resin and having a light transmissive bottom. The driving module is disposed on the supporting platform and has an eccentric wheel that can be driven to rotate. The roller module is disposed on the resin receiving unit, and has a roller that is rotated by the eccentric wheel during a part of the rotation of the eccentric wheel, and further drives the groove body during the rotation of the roller. A normal position moves down to a tilted release position. The light source unit is located below the support platform and provides a light source for curing the resin toward the groove. The forming stage is located above the trough body for attachment to the upper end of a shaped object.

In some embodiments, the method further includes at least one elastic returning member for applying an elastic force of the groove body to return the groove body from the release position to the normal position.

In some embodiments, the opposite sides of the trough body respectively protrude from a sliding rail, and the supporting platform has a pair of sliding slots for respectively receiving the sliding rails, so that the trough body is detachably assembled with the supporting platform.

In some embodiments, the three-dimensional printing apparatus of the present invention comprises a resin holding unit, a supporting platform, a driving module, a light source unit and a forming stage. The resin receiving unit has a tank body for accommodating the photocurable resin and having a light transmissive bottom portion, and the opposite sides of the tank body respectively protrude from a sliding rail. The support platform has a pair of sliding slots for respectively receiving the slide rails of the slot body, so that the slot body is detachably assembled with the support platform. The driving module is disposed on the supporting platform for moving the groove body from a normal position to an inclined release position by rotating in a rotating manner. The light source unit is located below the support platform and provides a light source for curing the resin toward the groove. The forming stage is located above the trough body for attachment to the upper end of a shaped object.

In some embodiments, the three-dimensional printing apparatus of the present invention comprises a support platform, a resin holding unit, a driving module, a light source unit and a forming stage. The resin holding unit has a tank body for accommodating the photocurable resin and having a bottom permeable, and the tank body is detachably assembled with the support platform. The driving module is disposed on the supporting platform for moving the groove body from a normal position to an inclined release position by rotating in a rotating manner. The light source unit is located below the support platform and provides a light source for curing the resin toward the groove. The forming stage is located above the trough body for attachment to the upper end of a shaped object.

The invention has at least the following effects: by the cooperation of the driving module of the release unit and the roller module, the separation step of the solidified layer and the trough body can be made more time-saving, and the roller module can reduce the rotation of the eccentric wheel to make the trough body The frictional force at the time of tilting not only increases the reliability of the process, but also reduces the cost of the motor. In addition, the tank body is detachably assembled with the first connecting structure and the second connecting structure, so that the liquid resin can be conveniently accommodated or replaced, and the time for disassembling the tank body is saved.

Referring to FIG. 3 and FIG. 4, an embodiment of the three-dimensional printing apparatus of the present invention comprises a support frame 1, a resin holding unit 2, a release unit 3, a light source unit 4 and a forming stage 5.

Referring to FIG. 5 to FIG. 7 together, the support frame 1 includes a support platform 11. The support platform 11 has a hollow mounting area 111. The resin accommodating unit 2 can be positioned under the pressure and elastically downwardly on the support platform 11 and disposed in the mounting area 111, and includes a tank body 21 for accommodating the photocurable resin and having a bottom permeable to light, and respectively located in the tank body. A first connecting structure 22 and a second connecting structure 23 on opposite sides of the 21 . The light source unit 4 is located below the support platform 11 and provides a light source for solidifying the resin toward the groove body 21. The forming stage 5 is located above the trough body 21 for attachment to the upper end of a formed body 6. In the present embodiment, the light source unit 4 employs a light source system used in general DLP technology, and the forming stage 5 is movable up and down with respect to the groove body 21.

In this embodiment, the first connecting structure 22 and the second connecting structure 23 each have a base 24 located in the mounting area 111 to connect the slot body 21, and a lateral extension of the base 24 away from the mounting area 111. The mounting plate portion 25 abuts against the bottom surface of the support platform 11. The resin holding unit 2 further includes four sets of positioning assemblies 27, each of which includes a fixing bolt 271 having a head portion 271a and a rod portion 271b, and a set of elastic members 272 provided on the rod portion 271b. Two of the positioning assemblies 27 are disposed corresponding to the first connecting structure 22, and the other two groups are disposed corresponding to the second connecting structure 23. The rod portion 271b of the fixing bolt 271 of each set of the positioning assembly 27 passes through the corresponding mounting plate portion 25 and the end is fixed to the supporting platform 11, and the two ends of the elastic member 272 respectively abut the head portion 271a and the mounting plate portion 25 to The elastic support mounting plate portion 25 abuts against the support platform 11 and provides a space in which the mounting plate portion 25 is elastically moved downward.

In addition, in the present embodiment, the trough body 21 has a bottom wall 211, a surrounding wall 212 extending upward from the bottom wall 211, and two convex portions respectively extending from the bottom wall 211 toward the first connecting structure 22 and the second connecting structure 23. Slide rail 213. As shown in FIG. 8 , the first connecting structure 22 and the second connecting structure 23 each have a sliding slot 241 disposed on the base 24 to respectively receive the sliding rail 213 , so that the slot 21 is detachably connected to the first connecting structure. 22 and the second connecting structure 23 are assembled. The resin receiving unit 2 further includes a connecting plate portion 26 connecting one end of the first connecting structure 22 and the base 24 of the second connecting structure 23, and the connecting plate portion 26, the first connecting structure 22 and the second The connecting structures 23 collectively form a U-shaped frame. The sliding slots 241 extend along a first direction D of a vertical connecting plate portion 26, and the entrance of each sliding slot 241 is located at a position of the corresponding base 24 away from the connecting plate portion 26. One end, that is, the free end of the arms of the U-shaped frame. In this embodiment, the first connecting structure 22 and the second connecting structure 23 are disposed on the supporting platform 11 , and the first connecting structure 22 and the second connecting structure 23 may also be regarded as a part of the supporting platform 11 .

Referring to FIG. 4 to FIG. 6 , the release unit 3 includes a roller module 31 disposed on the first connection structure 22 , and a drive module 32 disposed on the support platform 11 . The driving module 32 has a motor 321 and an eccentric wheel 322 connected to the motor 321 . The eccentric wheel 322 is located above the roller module 31 and is controlled to rotate by the motor 321. The roller module 31 has a roller 311 and a mounting seat 312 that can be rotated by the eccentric wheel 322. The mounting seat 312 is disposed on the mounting plate portion 25 of the first connecting structure 22, and the roller 311 is rotatably disposed on the mounting seat 312.

Referring to FIG. 3 and FIG. 7 , the first connecting structure 22 can be pressed against the roller 311 by the rotation of the eccentric wheel 322, and the first connecting structure 22 is rotated from a normal position (as shown in FIG. 3 ). Move to a position where the groove body 21 is inclined (as shown in Fig. 7) and then return to the normal position. Specifically, referring to FIG. 5, the outer circumference of the eccentric 322 can be divided into a short distance section 322a having the shortest off-axis distance, a long distance section 322b having the longest off-axis distance, and a short distance section 322a and long. The two intermediate segments 322c between the segments 322b, the short segments 322a and the long segments 322b are in opposite positions. When the long distance segment 322b of the eccentric wheel 322 is located above the short distance segment 322a, the long distance segment 322b is away from the roller 311 and the eccentric wheel 322 is not in contact with the roller 311. At this time, the first connecting structure 22 is in the normal position, and the slot body 21 is in the normal position. Horizontally, the bottom surface of the forming stage 5 is parallel to the groove body 21, and a flat cured layer 61 can be formed when the resin is cured by light. After forming a solidified layer 61, the motor 321 is activated to drive the eccentric 322 to rotate one turn. When the eccentric 322 rotates, the eccentric 322 gradually approaches the roller 311 to further contact the roller 311, and the roller 311 approaches the roller as the long distance segment 322b approaches. 311, the roller 311 is gradually pressed down and interlocked with the first connecting structure 22, so that the groove body 21 is gradually inclined downward from the side of the first connecting structure 22, whereby the solidified layer 61 can be gradually moved toward the side of the first connecting structure 22 The direction of the side of the second connecting structure 23 is separated from the bottom surface of the groove body 21. While the eccentric 322 is rotating, the forming stage 5 is also slowly moved up to the distance of the next formed thickness of the next solidified layer 61. When the long distance section 322b of the eccentric wheel 322 contacts the roller 311, the groove body 21 is inclined to the maximum, and the solidified layer 61 moves up with the forming stage 5 and is completely separated from the groove body 21. In addition, when the roller 311 is pressed to move the first connecting structure 22 downward, the first connecting structure 22 presses the corresponding elastic member 272 to accumulate elastic recovery force of the corresponding elastic member 272. Then, the long distance section 322b of the eccentric wheel 322 gradually returns to the original position away from the roller 311, and gradually reduces the pressure on the roller 311. At this time, the first connecting structure 22 is gradually returned to the normal position by the elastic restoring force of the elastic member 272. . Of course, in other embodiments, the first connecting structure 22 of the resin receiving unit 2 or other suitable portion may be gradually returned to the normal position by the elastic restoring force applied by the elastic restoring member of other forms, instead of the present embodiment. The elastic member 272 of the example is limited. After each completion of a cured layer 61, the foregoing actions can be performed to separate the cured layer 61 from the tank 21. Since the forming stage 5 is moved up to the position where the next solidified layer 61 is to be formed, it is not necessary to move up to a higher position to separate the solidified layer 61 from the tank 21 and then move down to the forming position, so that the overall size can be greatly reduced. Process time, speed up the process.

When the eccentric wheel 322 is pressed against the roller 311, the roller 311 can rotate relative to the eccentric wheel 322, thereby reducing the frictional force when the eccentric wheel 322 is rotated, and greatly reducing the distance traveled by the eccentric wheel 322 due to wear deformation. The risk of change, that is, the risk of the solidified layer 61 not being separated from the trough 21 due to the change in the travel distance of the trough body 21 downward movement. In addition, since the eccentric wheel 322 is in contact with the roller 311, the groove body 21 is moved downward by applying a force to the roller 311, that is, the groove body 21 is moved downward by the rotation rotation, and the eccentric wheel 322 does not move. The resin holding unit 2 is directly contacted, and therefore, it is also possible to avoid the abrasion of the resin containing unit 2 due to frequent contact of the eccentric wheel 322 with the resin containing unit 2, affecting the accuracy of the position. In other words, in the present case, the movement of the groove body 21 from the normal position to the inclined release position is achieved by rotating the pair of rotation modes.

Moreover, since the frictional force when the eccentric wheel 322 is rotated is low, the influence of the frictional force can be neglected, so the motor 321 does not require a feedback device for position detection and speed detection, and a stepping motor 321 having a lower cost can be used. That is, the requirement to accurately control the rotation of the eccentric 322 can be achieved. Therefore, by reducing the frictional force with the eccentric wheel 322 by the roller 311, not only the reliability of the process can be increased, but also the cost of the motor 321 can be reduced. In other embodiments, the roller 311 can also have other shapes, such as a spherical shape, and is not limited to this embodiment.

In addition, as shown in FIG. 8 , in the embodiment, the slot body 21 is detachably separated by the slide rail 213 on the slot body 21 and the sliding slot 241 on the first connecting structure 22 and the second connecting structure 23 . The first connecting structure 22 and the second connecting structure 23 are assembled, so that the liquid resin can be conveniently contained or replaced, and the time for disassembling the tank 21 can be saved. When the tank body 21 is assembled with the first joint structure 22 and the second joint structure 23, the slide rail 213 is moved by the entrance of the chute 241 and moved along the chute 241, and finally the joint portion 26 can be stopped to confirm the groove. Body 21 has reached its position. When the tank 21 is to be removed, the tank 21 may be pulled in the opposite direction of the assembly direction.

In summary, by the cooperation of the driving module 32 of the release unit 3 and the roller module 31, the separation step of the solidified layer 61 and the trough body 21 can be made more time-saving, and the roller module 31 can reduce the eccentric wheel 322. Rotating the frictional force when the groove body 21 is inclined can not only increase the reliability of the process, but also reduce the cost of the motor 321. In addition, the tank body 21 is detachably assembled with the first connecting structure 22 and the second connecting structure 23, so that the liquid resin can be conveniently contained or replaced, and the time for disassembling the tank body 21 can be saved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧Support frame

11‧‧‧Support platform

111‧‧‧Installation area

2‧‧‧Resin holding unit

21‧‧‧

211‧‧‧ bottom wall

212‧‧‧ Around the wall

213‧‧‧rails

22‧‧‧First connection structure

23‧‧‧Second connection structure

24‧‧‧Base

241‧‧ ‧ chute

25‧‧‧Installation board

26‧‧‧Connecting plate

27‧‧‧ Positioning components

271‧‧‧ fixing bolt

271a‧‧‧ head

271b‧‧‧ pole

272‧‧‧Flexible parts

3‧‧‧Disengagement unit

31‧‧‧Roller Module

311‧‧‧Roller

312‧‧‧ Mounting

32‧‧‧Drive Module

321‧‧‧Motor

322‧‧‧eccentric wheel

322a‧‧‧Short section

322b‧‧‧Long distance section

322c‧‧‧中段段

4‧‧‧Light source unit

5‧‧‧Forming stage

6‧‧‧Formed objects

61‧‧‧solidified layer

D‧‧‧First direction

91‧‧‧ resin tank

92‧‧‧First spring

93‧‧‧Second spring

94‧‧‧Forming stage

95‧‧‧Workpiece

951‧‧‧solidified layer

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 and Figure 2 are schematic views illustrating a prior art mechanism for separating a cured layer from a resin bath; Figure 4 is a perspective view of a portion of the structure of the embodiment of the present invention; Figure 4 is an exploded perspective view of Figure 4; Figure 6 is another perspective view of Figure 5; Figure 7 is a view similar to Figure 3, illustrating a first connection structure of the embodiment in a disengaged position; and Figure 8 is an exploded perspective view of Figure 4, illustrating a slotted body of the embodiment The ground is assembled with the first connection structure and the second connection structure.

Claims (10)

A three-dimensional printing device comprises: a support frame, comprising a support platform, the support platform has a hollow mounting area; a resin receiving unit, which can be elastically moved down and positioned on the support platform and is disposed on the support platform a mounting area, and a tank body for accommodating the photocurable resin and permeable to the bottom, and a first connecting structure and a second connecting structure respectively located on opposite sides of the tank; a release unit, The utility model includes a roller module disposed on the first connecting structure, and a driving module disposed on the supporting platform, the driving module has a motor and an eccentric wheel connected to the motor, wherein the eccentric wheel is located in the roller die Above the group and controlled by the motor, the roller module has a roller that can be rotated by the eccentric wheel. By rotating the eccentric wheel for one revolution, the roller can be pressed against the roller and the first connecting structure is linked. Moving the first connecting structure from a normal position to a position that causes the groove to be inclined to return to the normal position; a light source unit located below the supporting platform and facing the groove for providing a resin-cured light source; and a forming stage located above the tank for attaching the upper end of a shaped article. The three-dimensional printing device of claim 1, wherein the first connecting structure and the second connecting structure each have a base located in the mounting area to connect the slot, and a distance away from the base The mounting area extends laterally to abut the mounting plate portion of the bottom surface of the supporting platform, the resin receiving unit further includes four sets of positioning components, each positioning component comprising a fixing bolt having a head and a rod, and An elastic member disposed on the rod portion, wherein two sets of the positioning components are disposed corresponding to the first connecting structure, and wherein the other two groups are disposed corresponding to the second connecting structure, and the rods of the fixing bolts of each group of positioning components Passing through the corresponding mounting plate portion and fixing the end to the supporting platform, and the two ends of the elastic member respectively abut the head portion and the mounting plate portion to elastically support the mounting plate portion against the supporting platform and provide The space in which the mounting plate portion is elastically moved downward. The three-dimensional printing device of claim 1 or 2, wherein the slot has two slide rails protruding toward the first connection structure and the second connection structure, the first connection structure and the second connection The structures each have a sliding slot for receiving the sliding rails respectively, so that the slot is detachably assembled with the first connecting structure and the second connecting structure. The three-dimensional printing device of claim 3, wherein the roller module further has a mounting seat, and the mounting seat is disposed on the mounting plate portion of the first connecting structure, and the roller is rotatably disposed on the mounting seat . The three-dimensional printing device of claim 3, wherein the resin receiving unit further comprises a connecting plate portion connecting one end of the first connecting structure and one end of the base of the second connecting structure, and the connecting plate The first connecting structure and the second connecting structure together form a frame, the sliding slots extend along a first direction perpendicular to the connecting plate portion, and the entrance of each sliding slot is located at a corresponding base away from the Connect one end of the plate. A three-dimensional printing device comprises: a supporting platform; a resin holding unit having a tank body for accommodating the photocurable resin and having a bottom transparent; a driving module disposed on the supporting platform and having a a driving and rotating eccentric wheel; a roller module, disposed in the resin receiving unit, having a roller that is rotated by the eccentric wheel during a part of the rotation of the eccentric wheel, and the roller is driven by the eccentric wheel During the rotation, the groove body is moved from a normal position to an inclined release position; a light source unit is disposed under the groove body and provides a light source for solidifying the resin toward the groove body; and a forming load A table is located above the trough for attachment to the upper end of a shaped body. The three-dimensional printing device of claim 6, further comprising at least one elastic reset member for applying an elastic force of the groove body to reset the groove body from the release position to the normal position. The three-dimensional printing device of claim 6, wherein the opposite sides of the tank body respectively protrude from a sliding rail, the supporting platform has a pair of sliding slots for respectively receiving the sliding rails, so that the trough body is detachably Assembled with the support platform. A three-dimensional printing device comprises: a resin holding unit having a tank body for accommodating the photocurable resin and having a light transmissive bottom; the opposite sides of the tank body respectively projecting a slide rail; a support platform having a The slide rails respectively accommodate the slide rails of the trough body, so that the trough body is detachably assembled with the support platform; a driving module is disposed on the support platform for operating in a rotating manner Driving the tank from a normal position to an inclined release position; a light source unit located below the tank and providing a light source for solidifying the resin toward the tank; and a forming stage located at Above the tank body, for attaching the upper end of a shaped body. A three-dimensional printing device comprises: a supporting platform; a resin holding unit having a tank body for accommodating the photocurable resin and having a bottom permeable, the tank body being detachably assembled with the supporting platform; a driving module is disposed on the supporting platform for moving the slot body from a normal position to an inclined release position by rotating in a rotating manner; a light source unit is located below the slot body and A light source for solidifying the resin is provided toward the tank; and a forming stage is disposed above the tank for attaching the upper end of a shaped body.