Abstract: A method for three-dimensional printing is provided. The method includes: determining whether a first bracket is going to collide with a second bracket when a first control command corresponding to a first print head among a plurality of control commands and a second control command corresponding to a second print head among the plurality of control commands are executed simultaneously. If yes, execution of the first control command is suspended to stop a printing operation performed by the first print head, and the second control command is executed so that the second print head performs the printing operation according to the second control command.

Abstract: The disclosure provides a 3D printing method and a 3D printing apparatus using the same. The 3D printing method includes the following steps: feeding a material using a printing parameter, wherein the printing parameter includes a target temperature and a target feeding rate; adjusting the printing parameter to change the heat energy provided to the printing filament per unit length; determining whether the target feeding rate matches the actual feeding rate according to the adjusted printing parameter to obtain a determination result; obtaining a correspondence relationship between the plurality of target temperatures and the plurality of target feeding rates according to the adjusted printing parameters and the determination results; and setting the printing parameter to print according to the obtained correspondence relationship.

Abstract: A 3D printing device and a printing correction method are provided. The 3D printing device includes a printing nozzle, a printing platform and a controller. The printing nozzle is controlled to move on the movement plane. The printing platform includes a first tilt sensor to sense a tilting state of the printing platform. The controller is coupled to the first tilt sensor. The printing correction method adapted to the 3D printing device includes following steps: sensing the tilting state of the printing platform; controlling the printing nozzle to be depressed in a first position on the printing platform to change the tilting state of the printing platform; and, correcting the relative position of the print platform with the movement plane by the first position and the changes of tilting state of the printing platform sensed by the tilt sensor.

Abstract: A three-dimensional printing apparatus and a method for calibrating printing inaccuracy thereof are provided. A printing head of the three-dimensional printing apparatus is adapted for moving along a straight printing path on a datum plane and simultaneously feeding out forming material, so as to generate a layer object on a supporting surface of a platform. If a path distance of the straight printing path is greater than a threshold, a plurality of linear compensation relationships respectively corresponding to a plurality of first zones of the supporting surface are used for calculating a first compensation value of a starting point and a second compensation value of an ending point. If the path distance of the straight printing path is not greater than the threshold, a common compensation values is decided based on at least one of second zones and which is corresponding to the starting point and the ending point.

Abstract: A 3D printing device and a resume printing method thereof are provided. The method includes: executing printing commands sequentially to control a print head for printing; obtaining a first printing command executed when a printing interruption occurs, and resuming printing according to the first printing command.

Abstract: The invention provides a method for height difference measurement between the print heads and a 3D printer using the method. The 3D printer includes a printing module, a contact sensor, a movement sensor and a controller. The controller makes a 3D print head and the contact sensor contact to each other vertically for generating a contact signal, and obtains a first height value according to a vertical movement distance between the printing module and the contact sensor. The controller makes a color head and the contact sensor contact to each other vertically for generating the contact signal, and obtains a second height value according to a vertical movement distance between the printing module and the contact sensor. The controller obtains a height difference between the 3D print head and the color head according to the first height value and the second height value.

Abstract: The disclosure provides a 3D printing method and a 3D printing apparatus using the same. The 3D printing method includes the following steps: feeding a material using a printing parameter, wherein the printing parameter includes a target temperature and a target feeding rate; adjusting the printing parameter to change the heat energy provided to the printing filament per unit length; determining whether the target feeding rate matches the actual feeding rate according to the adjusted printing parameter to obtain a determination result; obtaining a correspondence relationship between the plurality of target temperatures and the plurality of target feeding rates according to the adjusted printing parameters and the determination results; and setting the printing parameter to print according to the obtained correspondence relationship.

Abstract: A 3D printing device including a printing platform, a printing head, a sensor and a controller is provided. The printing platform includes a carrying surface. The printing head is disposed above the printing platform. The sensor is disposed above the printing platform. The controller is coupled to the printing head and the sensor. The sensor is used for analyzing a first layer slicing data of a 3D object to obtain a printing range. The controller operates the sensor to sense a plurality of sensing points corresponding to the printing range on the carrying surface of the printing platform, so as to obtain a plurality of sensing parameters corresponding to the sensing points. The controller determines whether the printing platform is inclined according to the sensing parameters. If yes, the controller determines an object shape of a compensation object according to the printing range and the sensing parameters.

Abstract: A print protection method adapting to a three-dimensional printing apparatus is provided. The print protection method includes following step: when a system voltage reduces from a normal voltage to a first threshold voltage, and lower than the first threshold voltage, generating a triggering signal to a control device by the trigger circuit; recording a position data of a current position of a print head to a storage device by the control device according to the triggering signal after the system voltage is lower than the first threshold voltage; and completely shutting down a peripheral device and the print head by the control device according to the triggering signal after the system voltage is lower than the second threshold voltage, so that the control device is continuously operated by remaining power after the system voltage is lower than the second threshold voltage. In addition, the above three-dimensional printing device is also provided.

Abstract: A 3D printing device and a resume printing method thereof are provided. The method includes: executing printing commands sequentially to control a print head for printing; obtaining a first printing command executed when a printing interruption occurs, and resuming printing according to the first printing command.

Abstract: The invention provides a method for height difference measurement between the print heads and a 3D printer using the method. The 3D printer includes a printing module, a contact sensor, a movement sensor and a controller. The controller makes a 3D print head and the contact sensor contact to each other vertically for generating a contact signal, and obtains a first height value according to a vertical movement distance between the printing module and the contact sensor. The controller makes a color head and the contact sensor contact to each other vertically for generating the contact signal, and obtains a second height value according to a vertical movement distance between the printing module and the contact sensor. The controller obtains a height difference between the 3D print head and the color head according to the first height value and the second height value.

Abstract: A 3D printing device and a printing correction method are provided. The 3D printing device includes a printing nozzle, a printing platform and a controller. The printing nozzle is controlled to move on the movement plane. The printing platform includes a first tilt sensor to sense a tilting state of the printing platform. The controller is coupled to the first tilt sensor. The printing correction method adapted to the 3D printing device includes following steps: sensing the tilting state of the printing platform; controlling the printing nozzle to be depressed in a first position on the printing platform to change the tilting state of the printing platform; and, correcting the relative position of the print platform with the movement plane by the first position and the changes of tilting state of the printing platform sensed by the tilt sensor.

Abstract: A three-dimensional printing apparatus and a method for calibrating printing inaccuracy thereof are provided. A printing head of the three-dimensional printing apparatus is adapted for moving along a straight printing path on a datum plane and simultaneously feeding out forming material, so as to generate a layer object on a supporting surface of a platform. If a path distance of the straight printing path is greater than a threshold, a plurality of linear compensation relationships respectively corresponding to a plurality of first zones of the supporting surface are used for calculating a first compensation value of a starting point and a second compensation value of an ending point. If the path distance of the straight printing path is not greater than the threshold, a common compensation values is decided based on at least one of second zones and which is corresponding to the starting point and the ending point.