System and method for detecting printing filament for three dimensional printing
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsShao-Hung Hsu, Wei-Yu Chen
Life of this patent
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Abstract
A system for detecting a filament for printing in three dimensional printing (3DP) which can automatically detect the presence of a filament includes a feeding device, a detection device, a driving device, and an indication module. The driving device drives the feeding device and the detection device detects and determines the normal presence of a filament from the feeding device. The indication module outputs a signal to correspond to the presence of a filament or otherwise. A 3DP filament detection method is also provided.
Claims19
A three dimensional printing (3DP) filament detection method comprising:
- driving a feeding device to move down;
- determining whether a nozzle reflected signal being read in a first predetermined time;
- driving the feeding device to move up a predetermined distance in response to reading the nozzle reflected signal in the first predetermined time;
- driving a pushrod of the feeding device to move down and a nozzle to output a filament;
- determining whether a filament reflected signal being read in a second predetermined time;
- and
- outputting a normal operation signal and controlling the pushrod to stop moving in response to reading the filament reflected signal in the second predetermined time;
- wherein the nozzle is connected to an end of the feeding device.
A 3DP filament detection system comprising:
- a detection device;
- a driving device;
- an indication module;
- and
- a feeding device comprising:
- a feeding cylinder;
- a nozzle connected to a end of the feeding cylinder;
- a piston accommodated in the feeding cylinder;
- and
- a pushrod configured to push the piston and drive the nozzle to output a filament;
- wherein when the driving device drives the feeding device to move down, the detection device is configured to determine whether a nozzle reflected signal is read;
- when the detection device reads the nozzle reflected signal, the driving device is further configured to drive the feeding device to move up a predetermined distance;
- after the feeding device stops to move up, the driving device is further configured to drive the pushrod to move down, and the detection device is further configured to determine whether a filament reflected signal is read in a first predetermined time;
- and
- when the detection device reads the filament reflected signal in the first predetermined time, the driving device is further configured to control the pushrod to stop moving and the indication module is configured to output a normal operation signal.
A feeding device comprising:
- a feeding cylinder;
- a nozzle connected to a end of the feeding cylinder;
- a piston accommodated in the feeding cylinder;
- and
- a pushrod configured to push the piston moving to make the nozzle outputting a filament;
- wherein when a driving device drives the feeding device to move down, a detection device is configured to determine whether a nozzle reflected signal is read;
- when the detection device reads the nozzle reflected signal, the driving device is further configured to drive the feeding device to move up a predetermined distance;
- after the feeding device stops moving up, the driving device is further configured to drive the pushrod to move down, and the detection device is further configured to determine whether a filament reflected signal is read in a first predetermined time;
- and
- when the detection device reads the filament reflected signal in the first predetermined time, the driving device is further configured to control the pushrod to stop moving and an indication module is configured to output a normal operation signal.
Dependencies are inferred from the claim text.