CN105150531A - Adjusting method for three-dimensional printing platform and three-dimensional printing machine - Google Patents
Adjusting method for three-dimensional printing platform and three-dimensional printing machine Download PDFInfo
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Abstract
The invention provides an adjusting method for a three-dimensional printing platform and a three-dimensional printing machine. The adjusting method for the three-dimensional printing platform includes the step that the flatness of each supporting point is corrected, wherein the step of correcting the flatness of one supporting point includes the sub-steps that the three-dimensional printing platform moves to a correcting position with the back towards a printing head; the printing head moves to the position above the supporting point needing to be corrected; the three-dimensional printing platform moves towards the printing head at first resolution ratio to reach a preset zero point position; whether a carrying plate reaches the triggering position of a triggering switch or not is judged; if the carrying plate does not reach the triggering position of the triggering switch, the corresponding supporting point is adjusted to the triggering position, and the carrying plate enables the triggering switch to output a triggering signal at the triggering position; and if the carrying plate reaches the triggering position of the triggering switch, the first resolution ratio of a next supporting point is corrected. The invention further discloses the three-dimensional printing machine using the adjusting method for the three-dimensional printing platform. Due to the fact that the supporting points are corrected and the triggering switch is used as a correcting standard, the carrying plate can be effectively flattened, and therefore forming quality can be improved.
Description
Technical field
The present invention relates to printing field, particularly relate to the 3 D-printing platform method of adjustment of a kind of three-dimensional printer and this three-dimensional printer.
Background technology
3D printer, also known as three-dimensional printer, is a kind of machine utilizing rapid shaping technique, based on mathematical model file, adopts moulding material, constructs three-dimensional entity by the mode successively printed.Before printing, need to utilize microcomputer modelling software modeling, then the threedimensional model " subregion " built up is become cross section successively, namely cut into slices, thus instruct 3D printer successively to print.3D printer obtains a wide range of applications at product manufacturing industry, and the operation principle of 3D printer is substantially identical with conventional printer, is made up of Control Component, mechanical component, printhead, consumptive material (i.e. moulding material) and medium etc., prints principle also substantially similar.
3D printhead by extruding silk material on 3 D-printing platform, then 3D solid is formed, when the nozzle of print platform and printhead is not parallel, when namely print platform occurs tilting, easily there is warpage or extrude silk material not connecting problem in the model printed, then model scrappage is higher.Therefore, after dispatching from the factory from printer, all need before user prints to adjust to the flat conditions of print platform, but general adjustment is only use card between nozzle and print platform, directly utilize visual comparison to realize again, such existence judges inaccurate and easily there is print-head nozzle and encounter print platform, the situation such as cause that print platform scratches, and has a strong impact on Consumer's Experience.
Summary of the invention
The first object of the present invention is to provide a kind of 3 D-printing platform method of adjustment of accurate adjustment print platform flatness.
The second object of the present invention is to provide a kind of 3 D-printing of accurate adjustment print platform flatness.
In order to realize the first object of the present invention, the invention provides a kind of 3 D-printing platform method of adjustment of three-dimensional printer, three-dimensional printer is included in the printhead of movement and the 3 D-printing platform of vertically movement in horizontal plane, wherein, printhead arranges trigger switch, 3 D-printing platform comprises at least three strong points and support board that vertically arrange, support board is arranged on multiple strong point, 3 D-printing platform method of adjustment comprises 3 D-printing platform movement to the step presetting dead-center position and the step of calibrating 3 D-printing platform, the step of successively each strong point being carried out to first resolution calibration is comprised to the step that 3 D-printing platform is calibrated, the step that a strong point is calibrated is comprised: 3 D-printing platform dorsad printhead moves to calibrating position, printhead moves to the top of the strong point needing calibration, 3 D-printing platform moves to default dead-center position with first resolution towards printhead, judge whether support board arrives the trigger position of trigger switch, as support board does not arrive the trigger position of trigger switch, then regulate the corresponding strong point to trigger position, support board makes trigger switch export triggering signal at trigger position, as support board arrives the trigger position of trigger switch, then first resolution calibration is carried out to next strong point.
From such scheme, adjusted by least three strong points successively, and utilize trigger switch as school reference of reference, effectively improve calibration accuracy, then effectively by support board leveling, can then improve shaping quality.
Further scheme is, after successively each strong point being carried out to the step of first resolution calibration, also comprises the step of again first strong point being carried out to first resolution calibration to the step that 3 D-printing platform is calibrated.
Therefore, in order to further improve calibration effect, after first each strong point being calibrated, then first strong point being calibrated, being conducive to improving calibration accuracy.
Further scheme is, after the step of each strong point being carried out to first resolution calibration, also comprise the step of each strong point being carried out to second resolution calibration to the step that 3 D-printing platform is calibrated, the step of each strong point being carried out to second resolution calibration comprises: 3 D-printing platform dorsad printhead moves to calibrating position; Printhead moves to the top of the strong point needing calibration; 3 D-printing platform moves to default dead-center position with second resolution towards printhead; Judge whether support board arrives the trigger position of trigger switch; As support board does not arrive the trigger position of trigger switch, then regulate the corresponding strong point to trigger position, support board makes trigger switch export triggering signal at trigger position; As support board arrives the trigger position of trigger switch, then second resolution calibration is carried out to next strong point.
Therefore, first calibrated by this coarse adjustment mode of first resolution, then utilize this fine tuning mode of second resolution to calibrate, be conducive to improving calibration efficiency and calibration accuracy.
Further scheme is, trigger switch is travel switch, and after support board contacts with travel switch, 3 D-printing platform method of adjustment also comprises: judge whether support board contacts under stroke state with travel switch; As support board contacts under stroke state with travel switch, then regulate the corresponding strong point to be regulate the corresponding strong point to move to trigger position dorsad to the step of contact position, support board contacts with travel switch at trigger position under trigger state printhead; As support board contacts in the firing state with travel switch, then first resolution calibration is carried out to next strong point.
Therefore, utilize travel switch can know three kinds of states between support board and travel switch, three kinds of states are respectively released state, trigger state and stroke state, by knowing this adjustment of three kinds of states conveniently and to the strong point, are also conducive to improving calibration accuracy.
Further scheme is, three-dimensional printer also comprises cursor chi, processing unit and display unit, cursor chi vertically is arranged on 3 D-printing platform, cursor chi exports the first altitude signal to processing unit, travel switch exports the second altitude signal to processing unit, processing unit exports adjustment signal according to the first altitude signal and the second altitude signal to display unit, before regulating the corresponding strong point to contact position, 3 D-printing platform method of adjustment also comprises: processing unit calculates the step of adjustment signal according to the first altitude signal and the second altitude signal, the step of display unit display adjustment signal.
Therefore, know the position of print platform by cursor chi and utilize travel switch to know the position of support board, adjustment direction and adjustment distance can be known by display unit when adjusting print platform, effectively improving calibration efficiency and calibration accuracy.
Further scheme is, after the step that 3 D-printing platform is calibrated, 3 D-printing platform method of adjustment also comprises the step of calibrating image-forming range, comprises the step that image-forming range is calibrated: 3 D-printing platform is with the step of the 3rd resolution ratio towards printhead movement; The step of the image-forming range between adjustment support board and printhead; Image-forming range is set to the step at imaging zero point.
Therefore, because the thickness of different support boards is all variant, and the image-forming range after strong point calibration between support board with printhead will be not identical with the distance preset, therefore make support board and printhead be in optimal imaging distance by adjustment image-forming range, be conducive to improving image quality.
In order to realize the second object of the present invention, the invention provides a kind of three-dimensional printer, three-dimensional printer is included in the printhead of movement and the 3 D-printing platform of vertically movement in horizontal plane, wherein, printhead arranges trigger switch, 3 D-printing platform comprises at least three strong points and support board that vertically arrange, and support board is arranged on multiple strong point, and support board is movable to the trigger position of trigger switch.
From such scheme, adjusted by least three strong points successively, and utilize trigger switch as school reference of reference, effectively improve calibration accuracy, then effectively by support board leveling, can then improve shaping quality.
Further scheme is, support board is other in the side of each strong point is provided with through hole, and printhead extend in through hole.
Therefore because trigger switch is arranged on the print head, by the through hole that arrange other in strong point side, when support board moves to trigger position, printhead extend in through hole, thus avoids support board and support board to collide.
Accompanying drawing explanation
Fig. 1 is three-dimensional printer embodiment of the present invention structure chart in a first state.
Fig. 2 is three-dimensional printer embodiment of the present invention structure chart in the second condition.
Fig. 3 is the system block diagram of three-dimensional printer embodiment of the present invention.
Fig. 4 is the flow chart of 3 D-printing platform method of adjustment embodiment of the present invention.
Fig. 5 is the flow chart in 3 D-printing platform method of adjustment embodiment of the present invention, print platform being carried out to coarse adjustment calibration.
Fig. 6 is the flow chart in 3 D-printing platform method of adjustment embodiment of the present invention, print platform being carried out to refine calibration.
Fig. 7 is the flow chart in 3 D-printing platform method of adjustment embodiment of the present invention, respective support point being carried out to coarse adjustment.
Fig. 8 is the flow chart in 3 D-printing platform method of adjustment embodiment of the present invention, respective support point being carried out to fine tuning.
Fig. 9 is the flow chart calibrated image-forming range in 3 D-printing platform method of adjustment embodiment of the present invention.
Below in conjunction with drawings and Examples, the invention will be further described.
Detailed description of the invention
Three-dimensional printer embodiment:
With reference to Fig. 1, Fig. 2 and Fig. 3, three-dimensional printer 1 comprise be installed in three-dimensional printer framework (not shown) in 3 D-printing platform 11, printhead 12, Z axis servomotor 131, Y-axis servomotor 132, X-axis servomotor 133, processor 14, cursor chi 15, travel switch 16 and display unit 17, screw rod 21 is through 3 D-printing platform 11, the bottom of screw rod 21 is connected with Z axis servomotor 131, guide rod 22 and guide rod 23 is also provided with in the both sides of screw rod 21, 3 D-printing platform 11 can be made for 21 times vertically to move along guide rod 22 and guide rod 23 at Z axis driven by servomotor screw rod, 3 D-printing platform 11 rear wall is also provided with cursor chi 15 (Fig. 1 and Fig. 2 is not shown), the displacement of 3 D-printing platform 11 on Z axis or height and position can be known exactly by cursor chi 15.
3 D-printing platform 11 is provided with support board 3 and three strong points 41, support board 3 is arranged on three strong points 41, the strong point 41 comprises with 3 D-printing platform threaded engagement and the screw that can vertically arrange and the spring be enclosed within outside this screw, this spring is connected between support board 3 and 3 D-printing platform 11, three strong points 41 are in not arranging on the same line, support board 3 is provided with three through holes 31, and each through hole 31 lays respectively on the position near a strong point 41.
Printhead 12 is arranged on X-axis guide rod (not shown), X-axis guide rod is connected with X-axis servomotor 133, under X-axis servomotor 133 drives, printhead 12 can move along X-axis, X-axis guide rod is also connected with Y-axis guide rod (not shown), Y-axis guide rod is connected with Y-axis servomotor 132, and under Y-axis servomotor 132 drives, but X guide rod moves along Y-axis.Printhead 12 is also provided with nozzle and is arranged on the travel switch 16 on nozzle side, travel switch 16 is vertically arranged, and travel switch 16 is the trigger switch in the present embodiment.When travel switch 16 contacts with support board 3, nozzle extend in guide hole 31, thus can avoid the collision of printhead 12 and objective table 3.
With reference to the system block diagram that Fig. 3, Fig. 3 are three-dimensional printers 1.Processor 14 is respectively to Z axis servomotor 131, Y-axis servomotor 132, X-axis servomotor 133 output drive signal, each servomotor is made to rotate respectively, then make 3 D-printing platform 11 vertically can move under Z axis servomotor 131 drives, printhead 12 is moved in the horizontal plane determined by X-axis and Y-axis.
Cursor chi 15 exports the first altitude signal to processing unit 14, travel switch 16 exports the second altitude signal to processing unit 14, processing unit 14 calculates according to the first altitude signal and the second altitude signal and draws adjustment signal, then adjustment signal exports to display unit by processing unit 14, and display unit 14 is the display screen for display adjustment signal.
3 D-printing platform method of adjustment embodiment:
With reference to the flow chart that Fig. 4, Fig. 4 are 3 D-printing platform methods of adjustment.First perform step S1, input 3 D-printing platform adjustment instruction, perform step S2 subsequently, 3 D-printing platform up moves to default zero point, performs the step of calibrating 3 D-printing platform subsequently.
Step S3 and step S4 is comprised to the step that 3 D-printing platform is calibrated, first, perform step S3, coarse adjustment calibration is carried out to 3 D-printing platform, perform step S4 subsequently, refine calibration is carried out to 3 D-printing platform, finally performs step S5, the image-forming range between 3 D-printing platform and printhead is calibrated.
Reference Fig. 5, Fig. 5 are flow charts 3 D-printing platform being carried out to coarse adjustment calibration.First step S31 is performed, coarse adjustment is carried out to the flatness of first strong point, perform step S32 subsequently, coarse adjustment is carried out to the flatness of second strong point, then step S33 is performed, coarse adjustment is carried out to the flatness of the 3rd strong point, finally performs step S34, coarse adjustment is carried out to the flatness of the 4th strong point.
Reference Fig. 6, Fig. 6 are flow charts 3 D-printing platform being carried out to refine calibration.First step S41 is performed, fine tuning is carried out to the flatness of first strong point, perform step S42 subsequently, fine tuning is carried out to the flatness of second strong point, then step S43 is performed, fine tuning is carried out to the flatness of the 3rd strong point, finally performs step S44, fine tuning is carried out to the flatness of the 4th strong point.
Reference Fig. 7, Fig. 7 are flow charts respective support point being carried out to coarse adjustment, namely first strong point, second strong point or the 3rd strong point are carried out to the flow chart of coarse adjustment.First step S61 is performed, 3 D-printing platform declines 5 millimeters to calibrating position from default dead-center position, perform step S62 subsequently, printhead moves to the top of the strong point needing adjustment, then step S63 is performed, 3 D-printing platform moves to default dead-center position with first resolution towards printhead, and namely 3 D-printing platform slowly rises to default dead-center position with the resolution ratio of 0.06 millimeter.
Perform step S64 subsequently, judge whether support board contacts with travel switch, as support board does not contact with travel switch, then perform step S66, processor calculates adjustment signal according to the first altitude signal and the second altitude signal, then step S67 is performed, adjustment signal is sent to display unit by processor, display unit will adjust Signal aspects, because support board is separated with travel switch, therefore need support board up to adjust, therefore display unit display needs information such as up being adjusted by support board, then step S68 is performed, regulate the height of the corresponding strong point to trigger position, support board contacts with travel switch at trigger position under trigger state, namely support board just contacts with travel switch and makes travel switch be in trigger state.
Again this strong point is calibrated again subsequently, namely step S69 is performed, 3 D-printing platform declines 5 millimeters, then step S63 and S64 is performed successively, as support board contacts with travel switch, then perform step S65, judge whether support board contacts with travel switch under stroke state, namely support board exceedingly contacts with travel switch and makes the trigger element of travel switch move a segment distance, makes travel switch be in stroke state.As support board contacts under stroke state with travel switch, then, after performing step S66, S67, S68, S69, S63, S64 and S65 successively, as support board contacts in the firing state with travel switch, then first resolution calibration is carried out to next strong point.
Reference Fig. 8, Fig. 8 are flow charts respective support point being carried out to fine tuning, namely first strong point, second strong point or the 3rd strong point are carried out to the flow chart of fine tuning.First step S71 is performed, 3 D-printing platform declines 5 millimeters to calibrating position, perform step S72 subsequently, printhead moves to the top of the strong point needing adjustment, then step 73 is performed, 3 D-printing platform moves to default dead-center position with second resolution towards printhead, and namely 3 D-printing platform slowly rises to default dead-center position with the resolution ratio of 0.01 millimeter.
Perform step S74 subsequently, judge whether support board contacts with travel switch, as support board does not contact with travel switch, then perform step S76, processor calculates adjustment signal according to the first altitude signal and the second altitude signal, then step S77 is performed, adjustment signal is sent to display unit by processor, display unit will adjust Signal aspects, because support board is separated with travel switch, therefore need support board up to adjust, therefore display unit display needs information such as up being adjusted by support board, then step S78 is performed, regulate the height of the corresponding strong point to trigger position, support board contacts with travel switch at trigger position under trigger state, namely support board just contacts with travel switch and makes travel switch be in trigger state.
Again this strong point is calibrated again subsequently, namely step S79 is performed, 3 D-printing platform declines 5 millimeters, then step S73 and S74 is performed successively, as support board contacts with travel switch, then perform step S75, judge whether support board contacts with travel switch under stroke state, namely support board exceedingly contacts with travel switch and makes the trigger element of travel switch move a segment distance, makes travel switch be in stroke state.As support board contacts under stroke state with travel switch, then, after performing step S76, S77, S78, S79, S73, S74 and S75 successively, as support board contacts in the firing state with travel switch, then second resolution calibration is carried out to next strong point.
Reference Fig. 9, Fig. 9 are the flow charts that image-forming range carries out calibrating.First step S51 is performed, 3 D-printing platform moves towards printhead with the 3rd resolution ratio, namely 3 D-printing platform rises with 0.01 millimeter of resolution ratio, performs step S52 subsequently, the image-forming range between adjustment support board and printhead, namely the movement of 3 D-printing platform is stopped when image-forming range is suitable, finally performing step S53, image-forming range being set to imaging zero point, when carrying out 3D solid imaging, 3 D-printing platform will rise to imaging zero point, and printhead is extruded into picture silk material to support board.
Above-described embodiment is preferred embodiment of the present invention, trigger switch comprises touch switch and non-contact switch, touch switch is except adopting travel switch, the touch sensor of spring-piece type can also be adopted, contacted with touch sensor by support board, when support board does not contact with touch sensor, then the strong point regulated and make support board move to contact position, support board contacts with touch sensor at contact position, as support board just contacts with touch sensor at contact position, then next strong point is corrected, then just flatness calibration can be carried out to multiple strong point, and realize object of the present invention.And the present invention can also adopt four strong points or five strong points to support support board, utilizes touch switch to carry out flatness calibration to multiple strong point respectively, can realize object of the present invention too.
In addition, non-contact switch comprises photoelectric sensor, Magnetic Sensor and capacitance sensor etc., by photoelectric sensor can carry out ligh-ranging from, and utilize the trigger position of photoelectric sensor preset, judge whether print platform arrives trigger position.Or utilize coil and Magnetic Sensor to carry out magnetic survey distance, judge whether print platform arrives trigger position according to the size variation of magnetic flux.Or adopt capacitance sensor to utilize the size variation of capacitance to carry out range measurement, thus judge whether print platform arrives trigger position, these non-contact switch well known to those skilled in the art above-mentioned all can detect the position of print platform, when print platform arrives trigger position, contactless trigger switch just exports triggering signal to processor, then inform that this strong point of user arrives trigger position, thus realize object of the present invention.
Therefore, the trigger position of touch switch is positioned at the position just contacted with touch switch, when print platform is positioned at trigger position, touch switch then exports triggering signal to processor, and be positioned at default distance during the trigger position of non-contact switch, when distance between print platform and non-contact switch is default distance, then touch switch then exports triggering signal to processor, adjusted by least three strong points successively subsequently, and utilize trigger switch as school reference of reference, effectively improve calibration accuracy, then effectively can by support board leveling, then shaping quality is improved.
Claims (10)
1. the 3 D-printing platform method of adjustment of three-dimensional printer, described three-dimensional printer is included in the printhead of movement and the 3 D-printing platform of vertically movement in horizontal plane,
It is characterized in that:
Described printhead arranges trigger switch, and described 3 D-printing platform comprises at least three strong points and support board that vertically arrange, and described support board is arranged on multiple described strong point;
Described 3 D-printing platform method of adjustment comprises described 3 D-printing platform movement to the step presetting dead-center position and the step of calibrating described 3 D-printing platform;
The step of successively strong point described in each being carried out to first resolution calibration is comprised to the step that described 3 D-printing platform is calibrated;
The step that a described strong point is calibrated is comprised:
Described 3 D-printing platform dorsad described printhead moves to calibrating position;
Described printhead moves to the top of the described strong point needing calibration;
Described 3 D-printing platform moves to default dead-center position with first resolution towards described printhead;
Judge whether described support board arrives the trigger position of described trigger switch;
As described in support board do not arrive as described in the trigger position of trigger switch, then regulate the corresponding described strong point to trigger position, described support board makes described trigger switch export triggering signal at described trigger position;
As described in support board arrive as described in the trigger position of trigger switch, then first resolution calibration is carried out to the strong point described in next.
2. 3 D-printing platform method of adjustment according to claim 1, is characterized in that:
After successively the strong point described in each being carried out to the step of first resolution calibration, the step of again first described strong point being carried out to first resolution calibration is also comprised to the step that described 3 D-printing platform is calibrated.
3. 3 D-printing platform method of adjustment according to claim 1, is characterized in that:
After the step of the strong point described in each being carried out to first resolution calibration, the step of the strong point described in each being carried out to second resolution calibration is also comprised to the step that described 3 D-printing platform is calibrated;
The step of the strong point described in each being carried out to second resolution calibration comprises:
Described 3 D-printing platform dorsad described printhead moves to described calibrating position;
Described printhead moves to the top of the described strong point needing calibration;
Described 3 D-printing platform moves to described default dead-center position with second resolution towards described printhead;
Judge whether described support board arrives the trigger position of described trigger switch;
As described in support board do not arrive as described in the trigger position of trigger switch, then regulate the corresponding described strong point to described trigger position, described support board makes described trigger switch export triggering signal at described trigger position;
As described in support board arrive as described in the trigger position of trigger switch, then second resolution calibration is carried out to the strong point described in next.
4. 3 D-printing platform method of adjustment according to claim 1, is characterized in that:
Described trigger switch is travel switch;
After described support board contacts with described travel switch, described 3 D-printing platform method of adjustment also comprises:
Judge whether described support board contacts under stroke state with described travel switch;
As described in support board with as described in travel switch contact under stroke state, then regulate the corresponding described strong point to be regulate the corresponding described strong point to move to trigger position dorsad to the step of described trigger position, described support board contacts with described travel switch at described trigger position under trigger state described printhead;
As described in support board with as described in travel switch contact in the firing state, then first resolution calibration is carried out to the strong point described in next.
5. 3 D-printing platform method of adjustment according to claim 4, is characterized in that:
Described three-dimensional printer also comprises cursor chi, processing unit and display unit, described cursor chi vertically is arranged on described 3 D-printing platform, described cursor chi exports the first altitude signal to described processing unit, described travel switch exports the second altitude signal to described processing unit, and described processing unit exports adjustment signal according to described first altitude signal and described second altitude signal to described display unit;
Before regulating the corresponding described strong point to described trigger position, described 3 D-printing platform method of adjustment also comprises:
Described processing unit calculates the step of described adjustment signal according to described first altitude signal and described second altitude signal;
Display unit shows the step of described adjustment signal.
6. the 3 D-printing platform method of adjustment according to any one of claim 1 to 5, is characterized in that:
After the step of calibrate described 3 D-printing platform, described 3 D-printing platform method of adjustment also comprises the step of calibrating image-forming range, comprises the step that image-forming range is calibrated:
Described 3 D-printing platform is with the step of the 3rd resolution ratio towards described printhead movement;
Adjust the step of the described image-forming range between described support board and described printhead;
Described image-forming range is set to the step at imaging zero point.
7. three-dimensional printer, described three-dimensional printer is included in the printhead of movement and the 3 D-printing platform of vertically movement in horizontal plane,
It is characterized in that:
Described printhead arranges trigger switch, and described 3 D-printing platform comprises at least three strong points and support board that vertically arrange, and described support board is arranged on multiple described strong point, and described support board is movable to the trigger position of described trigger switch.
8. three-dimensional printer according to claim 7, is characterized in that:
Described trigger switch is the travel switch vertically arranged.
9. three-dimensional printer according to claim 8, is characterized in that:
Described three-dimensional printer also comprises cursor chi, processing unit and display unit, described cursor chi vertically is arranged on described 3 D-printing platform, described cursor chi exports the first altitude signal to described processing unit, described travel switch exports the second altitude signal to described processing unit, and described processing unit exports adjustment signal according to described first altitude signal and described second altitude signal to described display unit.
10. the three-dimensional printer according to any one of claim 7 to 9, is characterized in that:
Described support board is other in the side of each strong point is provided with through hole, and described printhead extend in described through hole.
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