Abstract: A three-dimensional printing method for a three-dimensional printing system including a tank, a platform, an injection module, a warning module, a curing module, and a control module is provided. The control module is electrically connected to the curing module, the injection module, and the warning module. The method includes: analyzing a required amount of the liquid forming material corresponding to a three-dimensional object; obtaining a safe amount of the liquid forming material in the tank; and comparing the required amount and the safe amount, wherein the control module provides a response signal to the injection or warning module when the safe amount is less than the required amount. The injection module receives the response signal to inject the liquid forming material to the tank. The warning module receives the response signal to remind a user to provide the liquid forming material to the tank.

Abstract: A three-dimensional printing device including a body, a tank, an origin target, a sensor, and a control module is provided. The tank is rotatably assembled on the body, and the tank is filled with a liquid forming material. The origin target is disposed on the tank and rotates along with the tank. The sensor is disposed on the body and located above the liquid forming material to sense a liquid level of the liquid forming material. The control module electrically connects the tank and the sensor and drives the tank to rotate. The sensor is located above a rotation path of the origin target, and the control module senses the origin target through the sensor and positions a rotation origin of the tank.

Abstract: A stereo lithography apparatus includes a base, a lifting rail, a slider, a forming pedestal, a nut assembly and a screw rod. The lifting rail is arranged upright on the base. The slider is arranged on the lifting rail and allowed to move along the lifting rail. A position hole and at least an adjusting groove are defined on the forming pedestal. The nut assembly is connected with the slider by multiple screw bolts, one of the screw bolts is inserted through the position hole and connected with the slider, each of the other screw bolts is inserted through corresponding adjusting groove and connected with the slider. The screw rod is arranged upright on the base and engaged with the nut assembly. Thereby, the nut assembly would not be rotated to stick the screw rod while the forming pedestal is rotated.

Abstract: A 3D printing method is provided. A stereolithography 3D printer (2) selects one of multiple layers of print data sequentially, makes a modeling plane be a default thickness (h) away from a material tank (23), irradiates heading to the modeling plane according to the selected layer of the print data for printing one layer of slice physical model (421-422, 431-433), makes the modeling plane detach from light-curable materials (41) in the material tank (23), rotates the material tank (23) for making an angle difference between angles before and after rotation be within a default angle interval, and performs above steps repeatedly until completion of a 3D physical model.

Abstract: A 3D printing device including a base, a gantry, a forming platform, a tank, an adjustable platform, a driving module and a control module is provided. The gantry and the tank are respectively disposed on the base. The forming platform is movably assembled to the gantry. The adjusting platform is disposed between the gantry and the forming platform or between the tank and the base. The driving module is connected to the forming platform and the gantry. The control module is electrically connected to the driving module to drive the forming platform to reciprocate along the gantry, so that the forming platform is moved into or out of the tank. Before 3D printing is performed, the control module moves the forming platform to lean against the tank through the driving module, so as to drive the adjustable platform to deform, and confirm consistency of contact surfaces of the forming platform and the tank.

Abstract: A formation tank includes a tank body and a release film. The tank body includes a bottom plate and a tank wall. One face of the bottom plate is an inner bottom surface, and at least one engagement structure is formed on the inner bottom surface. The tank wall protrudes from the inner bottom surface and surrounds a periphery of the bottom plate. The release film is attached on the inner bottom surface and the release film is mortise-and-tenon connected to the engagement structure. An engagement structure is arranged on the bottom plate to improve an engagement force between the bottom plate and the release film. Accordingly, the release film is prevented from being detached, and therefore durability of the release film is also improved.

Abstract: A three-dimensional printing device including a body, a tank, an origin target, a sensor, and a control module is provided. The tank is rotatably assembled on the body, and the tank is filled with a liquid forming material. The origin target is disposed on the tank and rotates along with the tank. The sensor is disposed on the body and located above the liquid forming material to sense a liquid level of the liquid forming material. The control module electrically connects the tank and the sensor and drives the tank to rotate. The sensor is located above a rotation path of the origin target, and the control module senses the origin target through the sensor and positions a rotation origin of the tank.

Abstract: A 3D printing method adapted for a 3D printer is provided. The 3D printer includes a tank filled with a liquid-state forming material, a platform, a curing module and a control module. At least one of the tank and the platform as well as the curing module are electrically connected to the control module to be controlled by the same, and a 3D object is formed on the platform. The 3D printing method includes analyzing a model of the 3D object to obtain a layered information; the control module correspondingly distributes the layered information at a plurality of forming positions at the bottom of the tank. A forming layer is cured by the curing module and located at a forming position, and then the platform and the tank rotate relatively to move the forming layer to another forming position, and another forming layer is formed at the another forming position.

Abstract: A 3D printer including a machine platform, a container, at least one stirring element and a driving module is provided. The container is assembled to the machine platform and is adapted to contain a liquid forming material. The stirring element has a rotating shaft and is adapted to rotate along the rotating shaft. The driving module is connected to at least one of the container and the at least one stirring element, so as to drive the container and the at least one stirring element to produce relative movement when 3D printing is not performed, and the liquid forming material in the container is stirred by the at least one stirring element.

Abstract: A three-dimensional printing apparatus including a body, a rotation module, a tank, an elevating module, a forming platform, a curing module, and a control module is provided. The rotation module and the elevating module are disposed on the body. The tank is disposed on the rotation module. The forming platform is disposed on the elevating module. The curing module disposed in the body and under the tank. The control module is electrically connected to the rotation module, the elevating module, and the curing module. The forming platform dips into the forming material in liquid in the tank and the curing module cures the forming material between the forming platform and an inner bottom of the tank to form a solidification layer. Then the elevating module and the rotation module respectively drive the forming platform to rise and rotate relatively to the tank simultaneously.

Abstract: A 3D printer including a machine platform, a container, at least one stirring element and a driving element is provided. The container contains a liquid forming material, and is movably assembled to the machine platform. The stirring element is disposed in the container to move along with the container, and has a motion mode of moving away from or moving close to a bottom of the container. The driving element is fixed on the machine platform and extends into the container. The driving element and the stirring element are mutually located on moving paths of each other. During a moving process of the container, the driving element and the stirring element lean against each other to trigger the motion mode of the stirring element to move away from or move close to the bottom of the container, so as to stir the liquid forming material in the container.

Abstract: A 3D printer including a machine platform, a container and an injection module is provided. The container and the injection module are disposed on the machine platform, and the injection module injects a liquid forming material into the container. The injection module includes a bottle body, a deformable opening member, a driving assembly and a flow guide member. The bottle body contains the liquid forming material. The driving assembly is adapted to deform the deformable opening member. The driving assembly drives the deformable opening member to an open state, and the liquid forming material in the bottle body flows to the flow guide member through the deformable opening member, and flows to the container through the flow guide member. The driving assembly drives the deformable opening member to a close state, and the liquid forming material stops flowing to the flow guide member from the deformable opening member.

Abstract: A three-dimensional printing method for a three-dimensional printing system including a tank, a platform, an injection module, a warning module, a curing module, and a control module is provided. The control module is electrically connected to the curing module, the injection module, and the warning module. The method includes: analyzing a required amount of the liquid forming material corresponding to a three-dimensional object; obtaining a safe amount of the liquid forming material in the tank; and comparing the required amount and the safe amount, wherein the control module provides a response signal to the injection or warning module when the safe amount is less than the required amount. The injection module receives the response signal to inject the liquid forming material to the tank. The warning module receives the response signal to remind a user to provide the liquid forming material to the tank.

Abstract: A 3D printing method adapted for a 3D printer is provided. The 3D printer includes a tank filled with a liquid-state forming material, a platform, a curing module and a control module. At least one of the tank and the platform as well as the curing module are electrically connected to the control module to be controlled by the same, and a 3D object is formed on the platform. The 3D printing method includes analyzing a model of the 3D object to obtain a layered information; the control module correspondingly distributes the layered information at a plurality of forming positions at the bottom of the tank. A forming layer is cured by the curing module and located at a forming position, and then the platform and the tank rotate relatively to move the forming layer to another forming position, and another forming layer is formed at the another forming position.

Abstract: A stereolithography apparatus including a base, an elevator track, a threaded rod, a sliding bracket, a nut, a plurality of friction-reducing components, and a printing platform. The sliding track is disposed on the base. The threaded rod is disposed on the base and an axial direction of the threaded rod is parallel to the elevator track. The sliding bracket is slidably disposed on the elevator track. The nut is set on the threaded rod to be driven by the threaded rod to slide along the threaded rod. The sliding bracket clamps the nut to be driven by the nut to slide along the elevator track. The friction-reducing components are disposed between the nut and the sliding bracket for the nut to move relatively to the sliding bracket. The printing platform is disposed on the sliding bracket to slide with the sliding bracket along the elevator track.

Abstract: A three-dimensional printing apparatus including a body, a rotation module, a tank, an elevating module, a forming platform, a curing module, and a control module is provided. The rotation module and the elevating module are disposed on the body. The tank is disposed on the rotation module. The forming platform is disposed on the elevating module. The curing module disposed in the body and under the tank. The control module is electrically connected to the rotation module, the elevating module, and the curing module. The forming platform dips into the forming material in liquid in the tank and the curing module cures the forming material between the forming platform and an inner bottom of the tank to form a solidification layer. Then the elevating module and the rotation module respectively drive the forming platform to rise and rotate relatively to the tank simultaneously.

Abstract: A stereo lithography apparatus includes a base, a lifting rail, a slider, a forming pedestal, a nut assembly and a screw rod. The lifting rail is arranged upright on the base. The slider is arranged on the lifting rail and allowed to move along the lifting rail. A position hole and at least an adjusting groove are defined on the forming pedestal. The nut assembly is screw connected with the slider by multiple bolts, one of the bolts is inserted through the position hole and screw connected with the slider, each of the other bolts is inserted through corresponding adjusting groove and screw connected with the slider. The screw rod is arranged upright on the base and screw connected with the nut assembly. Thereby, the nut assembly would not be rotated to stick the screw rod while the forming pedestal is rotated.

Abstract: A chassis assembly structure includes a surrounding plate assembly, first abutting elements, second abutting elements and a third board. The first and second boards are coupled to form the surrounding plate assembly. Each first abutting element has a slider and a first stop plate extended from the first (or second) board, and each second abutting element has first and second convex plates extended from the second (or first) board. Each first convex plate has a first positioning groove at an end and a second stop plate at the other end. Each second convex plate has a second positioning groove, and both ends of each slider are slidably coupled to and limited in each of the first and second positioning grooves, and each first stop plate is stopped and limited by each second stop plate, and the third board covers a side of the surrounding plate assembly.

Abstract: An automatic liquid supply apparatus for supplying liquid material during 3D printing is provided. The automatic liquid supply apparatus includes: a container including an accommodating space for containing the liquid material, the accommodating space including a recess and a trench communicating with each other, the trench having an inner bottom face, the recess being recessed to a depth below the inner bottom face; a liquid level sensor including a floater, the floater being disposed corresponding to the recess and floating to rise and fall along with a liquid level, the liquid level sensor sensing the liquid level in the accommodating space; and a liquid dispenser electrically connected to the liquid level sensor, the liquid dispenser selectively supplying or stopping supplying the liquid material into the accommodating space according to the sensed liquid level.

Abstract: An automatic liquid supply apparatus for supplying liquid material during 3D printing is provided. The automatic liquid supply apparatus includes: a container including an accommodating space for containing the liquid material, the accommodating space including a recess and a trench communicating with each other, the trench having an inner bottom face, the recess being recessed to a depth below the inner bottom face; a liquid level sensor including a floater, the floater being disposed corresponding to the recess and floating to rise and fall along with a liquid level, the liquid level sensor sensing the liquid level in the accommodating space; and a liquid dispenser electrically connected to the liquid level sensor, the liquid dispenser selectively supplying or stopping supplying the liquid material into the accommodating space according to the sensed liquid level.