CN104191621B

CN104191621B - 3D prints householder method, device and 3D printer

Info

Publication number: CN104191621B
Application number: CN201410432686.1A
Authority: CN
Inventors: 周涵宁
Original assignee: Beijing Zhigu Tech Co Ltd
Current assignee: Beijing Zhigu Tech Co Ltd
Priority date: 2014-08-28
Filing date: 2014-08-28
Publication date: 2016-10-05
Anticipated expiration: 2034-08-28
Also published as: CN104191621A

Abstract

The embodiment of the present application provides a kind of 3D and prints householder method, device and 3D printer.A kind of method includes: according to the printer model file of an object, determine the applying position of support force needed at least one parts in described object are in the print procedure of described object, size and Orientation；According at least to the described required applying position of support force, size and Orientation, control a contactless support means provides the active force meeting described required support force in described print procedure at least one parts described.Present embodiments provide a kind of scheme assisting 3D to print.

Description

3D prints householder method, device and 3D printer

Technical field

The invention relates to printing technique field, particularly relate to a kind of 3D and print auxiliary square Method, device and 3D printer.

Background technology

Existing consumer level three-dimensional (3 Dimension are called for short 3D) printer, uses mostly Fusion sediment moulding (Fused Deposition Modeling is called for short FDM) technology.FDM Technology depends on gravity and molten state material is fixed on precalculated position, during printing, as Really the angle of inclination of the moulding section of model is relatively big, such as nose prominent in eaves shape or head portrait Sub-shape, then this moulding section is susceptible to subside.

Common solution is to print extra supporting construction in the position of these moulding sections, But print supporting construction itself and can take the time-write interval, consume printed material, even and if Printing completes rear cutout and removes supporting construction, still can leave some joint seam traces, affect final molding Outward appearance.

Summary of the invention

In view of this, a purpose of the embodiment of the present application is to provide a kind of auxiliary 3D to print Scheme.

For achieving the above object, according to an aspect of the embodiment of the present application, it is provided that a kind of 3D Print householder method, including:

Printer model file according to an object, determines that at least one parts in described object exist The applying position of support force needed in the print procedure of described object, size and Orientation；

According at least to the described required applying position of support force, size and Orientation, control one non- At least one parts described are provided in described print procedure and meet institute by contact support means State the active force of required support force.

For achieving the above object, according to the another aspect of the embodiment of the present application, it is provided that a kind of 3D Print householder method, including:

According to printed at least partly shape of object, material, determine described at least The applying position of support force needed at least one parts, size and Orientation in fractional object；

According at least to the described required applying position of support force, size and Orientation, control one non- At least one parts described are provided and meet described required support force by contact support means Active force.

For achieving the above object, according to the another aspect of the embodiment of the present application, it is provided that a kind of 3D Print auxiliary device, including:

First determines module, for the printer model file according to an object, determines described object In the applying position of the support force required in the print procedure of described object of at least one parts Put, size and Orientation；

Control module, for according at least to the described required applying position of support force, size and Direction, controls a contactless support means in described print procedure at least one portion described Part provides the active force meeting described required support force.

First determines module, for the shape according at least part of object that printed, Material, determines in described at least part of object the applying position of support force needed at least one parts Put, size and Orientation；

Control module, for according at least to the described required applying position of support force, size and Direction, controls a contactless support means and at least one parts described offer is met described institute The active force of the support force needed.

For achieving the above object, according to the another aspect of the embodiment of the present application, it is provided that a kind of 3D Printer, including: a 3D as above prints auxiliary device and described contactless support Device.

At least one technical scheme in the most multiple technical schemes has the advantages that

The embodiment of the present application, by the printer model file according to an object, determines in described object The support force required in the print procedure of described object of at least one parts applying position, Size and Orientation, and control a contactless support means in described print procedure to described extremely Few parts provide the active force meeting described required support force, it is provided that a kind of auxiliary The scheme that 3D prints, specifically, utilizes contactless support force to replace at least in part beating Parts are supported by the supporting construction of print, save time-write interval and printed material, and keep away Exempt to excise the supporting construction impact on object outward appearance.

Accompanying drawing explanation

Fig. 1 prints the flow process signal of householder method embodiment one for a kind of 3D that the application provides Figure；

Fig. 2 A, 2B are respectively in the application in print procedure the most in the same time needed for parts A kind of schematic diagram of support force；

Fig. 3 is a kind of signal of the electric field force that in the application, parts are suffered between a pair pole plate Figure；

Fig. 4 prints the flow process signal of householder method embodiment two for a kind of 3D that the application provides Figure；

Fig. 5 A prints the structural representation of auxiliary device embodiment one for a kind of 3D that the application provides Figure；

Fig. 5 B is the structural representation of a kind of optional implementation of Fig. 5 A illustrated embodiment；

Fig. 6 A prints the structural representation of auxiliary device embodiment two for a kind of 3D that the application provides Figure；

Fig. 6 B is the structural representation of a kind of optional implementation of Fig. 6 A illustrated embodiment；

The structural representation of a kind of 3D printer embodiment that Fig. 7 A provides for the application；

Fig. 7 B is the structural representation of a kind of optional implementation of Fig. 7 A illustrated embodiment.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the application is made the most in detail Explanation.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.

Fig. 1 prints the flow process signal of householder method embodiment one for a kind of 3D that the application provides Figure.As it is shown in figure 1, the present embodiment includes:

110, according to the printer model file of an object, at least one in described object is determined Applying position, size and the side of the support force that parts are required in the print procedure of described object To.

For example, a kind of 3D that the application provides prints described in auxiliary device embodiment one 3D prints the auxiliary device executive agent as the present embodiment, performs 110～120.Wherein, Described 3D prints auxiliary device can be arranged on a 3D printing with the form of hardware and/or software In machine.

120, according at least to the described required applying position of support force, size and Orientation, control Make a contactless support means in described print procedure, at least one parts described to be provided Meet the active force of described required support force.

In the present embodiment, in 110, determine that at least one parts in described object are at described object Print procedure in the required applying position of support force, size and Orientation it may be that determine institute State applying position, the occurrence of size and Orientation of required support force, or, determine described The condition applying to meet needed for position, size and Orientation of required support force.Correspondingly, 120 In it may be that apply position, the tool of size and Orientation according at least to described required support force Body value controls a contactless support means in described print procedure at least one portion described Part provides the active force applying position, size and Orientation equally, or, according at least to described institute The condition applying to meet needed for position, size and Orientation of the support force needed, controls a noncontact At least one parts described are provided in described print procedure and apply position, big by formula support means Little and direction meets the active force of described condition.

Alternatively, described contactless support means is controlled in described applying position towards described direction At least one parts described are applied the active force of described size.

In the present embodiment, at least one parts described are provided by described contactless support means Described active force is not based on described contactless support means and at least one parts described Contact and produce.Alternatively, described contactless support means not with at least one portion described Part contacts, still optionally further, described contactless support means not with other of described object Component contact.For example, the described active force that described contactless support means provides is permissible It is, the impulse force of gas or suction, the electric field electric field force to electrical body, ultrasound wave or the work of light wave Firmly etc..

The present embodiment by according to the printer model file of an object, determines in described object extremely The applying position of support force needed for parts are in the print procedure of described object less, size And direction, and control a contactless support means in described print procedure to described at least one Individual parts provide the active force meeting described required support force, it is provided that a kind of auxiliary 3D beats The scheme of print, specifically, utilizes contactless support force to replace print to prop up at least in part Parts are supported by support structure, save time-write interval and printed material, and avoid and cut Except the supporting construction impact on object outward appearance.

Method the present embodiment being described further below by some optional implementations.

In the present embodiment, alternatively, described printer model file includes but not limited to: described thing The shape of body, material, page order.It is to say, in the printer model file of an object At least describe the shape of described object, material and page order.Specifically, described object Shape includes: form the structure between shape and the various piece of the various piece of described object Relation；The material of described object includes: form the material of the various piece of described object；Described The page order of object includes: forms the page order of the various piece of described object, the most first beats Print which part after which part.

In the present embodiment, owing to there is stress between each several part adjacent in an object, correspondingly, According to mutual stress, described object can be divided into multiple parts (Parts).Due to a thing The stress between each several part adjacent in body changes such as print procedure, alternatively, described The division of middle parts of objects part is likely to along with print procedure changes.

Wherein, some parts may need to support in print procedure, and some parts is printed Perhaps without support in journey.Alternatively, the present embodiment is at the described impression block according to an object Type file, determines required the propping up in the print procedure of described object of the parts in described object Before the applying position of support force, size and Orientation, also include:

According to described printer model file, determine in described object and need in described print procedure At least one parts described supported.

For example, for each parts, all can determine according to the shape of these parts, material The center of gravity of these parts, further, adjacent according at least to the center of gravity of these parts and this parts The structural relation of each parts and these parts, and these parts and each parts adjacent with these parts Page order, it may be determined that these parts are the need of support.

In the present embodiment, owing to there is stress, and each portion between each parts adjacent in an object The page order of part has successively, and therefore, in the print procedure of described object, whether each parts need Want support force and required support force all can change.Alternatively, need to support extremely Few parts change with described print procedure.Correspondingly, if at least one parts described are with institute State print procedure change, and the support force needed at least one parts described determined in 110 with Described print procedure changes, then control described contactless support means in 120 and beat with described At least one parts described of print change in process provide needed for meeting with the change of described print procedure The active force of support force.

Alternatively, executing of the support force that at least one parts described are required in described print procedure Add position, direction and/or size to change with described print procedure.For example, described required The applying position of support force change with described print procedure, or, described required support force Direction change with described print procedure, or, the size of described required support force is with described Print procedure changes, or, the applying position of described required support force and direction are all with described Print procedure changes, or, the applying position of described required support force and size are all with described Print procedure changes, or, applying position, direction and the size of described required support force are equal Change with described print procedure, or, the direction of described required support force and size are all with institute State print procedure change.

Fig. 2 A, 2B are respectively in the application in print procedure the most in the same time needed for parts A kind of schematic diagram of support force.It should be noted that only with vertical two dimension in Fig. 2 A, 2B Plane is illustrated, is not meant to the restriction to the application.Fig. 2 A is the printing according to an object The moment (representing with t1) in the print procedure of described object that model file determines is beaten The fractional object printed off, according to Fig. 2 B described printer model file determine in described printing During the fractional object that prints of another moment (representing with t2), t2 > t1, t1, The fractional object that the t2 moment has printed all includes parts 1 and parts 2.

As shown in Figure 2 A, in the t1 moment, parts 2 produce stress to parts 1 at adjoiner N1, N1 are less than the maximum stress to parts 1 such as the parts 2 determined by structure, material etc., The gravity of parts 1 is G1, and the adjoiner of the center of parts 1 and parts 1 and parts 2 Distance is L1, i.e. the moment of the gravity of parts 1 is G1*L1, therefore, in order to ensure moment Balancing, the moment of the support force T1 needed for t1 moment parts 1 should be with the gravity G1 of parts 1 Moment G1*L1 equal；It addition, as a example by vertical two dimensional surface, it is assumed that stress N1 exists Component in x-axis isComponent on the y axis isNeeded for t1 moment parts 1 Support force component in x-axis isComponent on the y axis isFurther contemplate The pressure P1 of the t1 moment printing head parts 1 to printing, it is assumed that P1 vertically downward, Then in order to ensure the stress balance of parts 1, N1, G1, T1, P1 need to meet: Based on above-mentioned equalising torque and the constraints of stress balance, can To determine applying position, direction and the size of the parts 1 support force T1 needed for the t1 moment； Further, based on above-mentioned equalising torque and the constraints of stress balance, may may determine that Multiple support force T1, i.e. apply position, direction and/or the multiple support force T1 varied in size, Correspondingly, can therefrom select a support force T1, alternatively, select one and make stress The support force T1 that N1 is minimum.Need explanation, in the scene that some are possible: P1 is 0, Such as after parts 1 have printed；And/or, N1 is 0, and such as parts 1 are without adjacent Other parts, parts 1 adjacent other parts are not when all having started printing；And/or, portion Part 1 directly contacts with print platform, and except above-mentioned various power, parts 1 may be also flat by printing The support force of platform.

As shown in Figure 2 B, in the t2 moment, parts 2 produce stress to parts 1 at adjoiner N2, N2 are less than the maximum stress to parts 1 such as the parts 2 determined by structure, material etc., The gravity of parts 1 is G2, and the adjoiner of the center of parts 1 and parts 1 and parts 2 Distance is L2, i.e. the moment of the gravity of parts 1 is G2*L2, therefore, in order to ensure moment Balancing, the moment of the support force T2 needed for t2 moment parts 1 should be with the gravity G2 of parts 1 Moment G2*L2 equal；It addition, as a example by vertical two dimensional surface, it is assumed that stress N2 exists Component in x-axis isComponent on the y axis isNeeded for t2 moment parts 1 Support force component in x-axis isComponent on the y axis isConsider further Pressure P2 to the t2 moment printing head parts 1 to printing, it is assumed that P2 vertically downward, Then in order to ensure the stress balance of parts 1, N2, G2, T2, P2 need to meet: Based on above-mentioned equalising torque and the constraints of stress balance, can To determine applying position, direction and the size of the parts 1 support force T2 needed for the t2 moment； Further, based on above-mentioned equalising torque and the constraints of stress balance, may may determine that Multiple support force T2, i.e. apply position, direction and/or the multiple support force T2 varied in size, Correspondingly, can therefrom select a support force T2, alternatively, select one and make stress The support force T2 that N2 is minimum.Need explanation, in the scene that some are possible: P2 is 0, Such as after parts 1 have printed；And/or, N2 is 0, and such as parts 1 are without adjacent Other parts, parts 1 adjacent other parts are not when all having started printing；And/or, portion Part 1 directly contacts with print platform, and except above-mentioned various power, parts 1 may be also flat by printing The support force of platform.

Comparison diagram 2A, 2B are it can be seen that owing to the parts 1 in t2 moment are than the portion in t1 moment Part more than 1 top half, the gravity of parts 1 increases and moves in center of gravity, i.e. G2 > G1 and L2 > L1, therefore, the moment of the parts 1 support force T2 needed for the t2 moment is more than parts 1 The moment of the support force T1 needed for the t1 moment, correspondingly, compared to parts 1 in the t1 moment Applying position, direction and the size of required support force T1, parts 1 are needed for the t2 moment Applying position, direction and/or the size of support force T2 can change.

In the present embodiment, described contactless support means has multiple implementation.

In the optional implementation of a kind of contactless support means, described contactless support Device includes: for the electrifying device that powers on at least one parts described be arranged on printing At least one pair of pole plate around region.

Wherein, at least one printing head during described print area refers to 3D printer is being beaten The region that print process can move to.

At this in optional implementation of contactless support means, correspondingly, control described non- At least one parts described are provided in described print procedure and meet institute by contact support means The active force stating required support force also has multiple implementation.

In the optional implementation of a kind of control, described according at least to described required support force Applying position, size and Orientation, control a contactless support means at described print procedure In at least one parts described are provided the active force meeting described required support force, including:

According at least to the described required applying position of support force, size and Orientation, control described At least one parts described are powered in described print procedure by electrifying device, and control institute State at least one pair of pole plate, in described print procedure, at least one parts described generation is met institute State the electric field force of required support force.

It is it should be noted that if at least one parts described are positioned between multipair pole plate, the most charged At least one parts described are simultaneously by the electric field force of multiple electric fields, now, and the electricity of the plurality of electric field Meet field force with joint efforts described required support force.

Fig. 3 is that in the application, the one of the electric field force that parts are suffered between a pair pole plate is shown It is intended to.As it is shown on figure 3, the electric potential difference between a pair pole plate is U, the distance between pole plate is by this D, correspondingly, electric field intensity E=U/d between pole plate, the direction of an electric field between this pole plate are by this The Impact direction (as shown in the figure) of positive charge；The charged polarity of one parts for negative (-), this portion The carried charge of part is Q, the direction of the electric field force F that these parts are suffered between this is to pole plate such as figure Shown in, the size of electric field force F can calculate with following formula: F=Q*U/d, electric field force F Active position on the part may be considered on these parts negative and positive electric charge in CHARGE DISTRIBUTION The center in the region that difference is maximum, or, the position that negative and positive charge difference is maximum, wherein, negative and positive electric charge Difference deducts, for the quantity of negative charge, the difference that the quantity of positive charge obtains.Those skilled in the art can To understand, when the support force needed for these parts reduces, can be weakened this to the electric field between pole plate Intensity, the electric field force suffered between this is to pole plate to reduce these parts.

Alternatively, described applying position, size and side according at least to described required support force To, control upper at least one parts described in described print procedure of described electrifying device Electricity, and control at least one pair of pole plate described in described print procedure at least one portion described Part produces the electric field force meeting described required support force, including:

According at least to the described required applying position of support force, size and Orientation, control described Electrifying device in described print procedure to the upper electric position of at least one parts described, on electrode Property and upper electricity, and the electric field controlled between at least one pair of pole plate described in described print procedure Intensity and direction of an electric field.

Specifically, the band at least one parts described is depended in the position that applies of described electric field force Electric position, the size of described electric field force depend on the electric field intensity between at least one pair of pole plate described and The carried charge of at least one parts described, the direction of described electric field force depend on described at least one pair of Direction of an electric field between pole plate and the charged polarity of at least one parts described；Generally, power on described in Device before at least one parts described are powered at least one parts described not charged, i.e. positive negative electricity Lotus balances, and in such a scenario, the band electric position at least one parts described is equivalent to described The electrifying device upper electric position at least one parts described, at least one parts described charged Amount equal to the described electrifying device upper electricity at least one parts described, and described at least one The charged polarity of parts and the described electrifying device upper electric polarity phase at least one parts described With.

Wherein, the electric field intensity between at least one pair of pole plate described can be by described in control at least one Electric potential difference and/or distance to pole plate control；Direction of an electric field between at least one pair of pole plate described Can control by controlling the direction of at least one pair of pole plate described.

For example, the up, down, left, right, before and after side at 3D printer is respectively provided with One conductive grid: in a kind of possible scene, can give the conduction of upside by on-off circuit Grid selects certain voltage, selects no-voltage to the conductive grid of downside, meanwhile, disconnect left, The conductive grid of side right, forward and backward, thus the conductive network of the most upper and lower side constitutes a pair pole plate, And this is vertical to the direction of an electric field between pole plate.Further, it is also possible to lead by controlling one Break-make between each paths in power grid, controls the position of the pole plate that this conductive grid is formed.

Generally, if the applying position of the support force needed at least one parts described is with described printing Change in process, the upper electric position of at least one parts described is beaten by the most described electrifying device with described Print change in process；If the size of the support force needed at least one parts described is with described printed Cheng Bianhua, the most described electrifying device to the upper electricity of at least one parts described and/or described extremely Electric field intensity between few a pair pole plate changes with described print procedure；If at least one parts described The direction of required support force changes with described print procedure, the most described electrifying device to described extremely Direction of an electric field between the upper electric polarity of few parts and/or at least one pair of pole plate described is with described Print procedure changes.

In a kind of possible scene, the applying position of the support force needed at least one parts described Put, size and Orientation be all represented by with at least one parameter relevant with described print procedure be The function of independent variable.

Alternatively, described applying position, size and side according at least to described required support force To, control described electrifying device and in described print procedure, at least one parts described are powered on Position, upper electric polarity and upper electricity, and control between at least one pair of pole plate described in described printing During electric field intensity and direction of an electric field, including:

According at least to the described required applying position of support force, size and Orientation, determine described Electrifying device to the upper electric position of at least one parts described, upper electric polarity and upper electricity with institute State the function that at least one parameter is independent variable that print procedure is relevant, and described at least one pair of Electric field intensity between pole plate, direction of an electric field are with at least one parameter relevant with described print procedure Function for independent variable；

According to described electrifying device to the upper electric position of at least one parts described, upper electric polarity and The upper electricity function with at least one parameter relevant with described print procedure as independent variable, in institute State the currency of at least one parameter described in print procedure, control electrifying device to described at least Powering on of one parts；

According to the electric field intensity between at least one pair of pole plate described, direction of an electric field with printed with described The function that at least one parameter is independent variable of Cheng Youguan, and, institute in described print procedure State the currency of at least one parameter, control the electric field intensity between at least one pair of pole plate described, electricity Field direction.

In the present embodiment, relevant at least one parameter of described and described print procedure have multiple can Energy.One is probably, and at least one parameter relevant with described print procedure is included in described beating Time during print, such as, the time that described print procedure has been carried out.

Generally, the printing head of 3D printer progressively prints described on described print platform Object, in print procedure, printing head and/or print platform have two kinds of move modes alternatively: A kind of mode is that print platform moves in vertical direction, printing head moves in the horizontal plane, A kind of mode is that print platform is motionless, printing head moves in three dimensions.Correspondingly, again One is probably, and at least one parameter relevant with described print procedure includes described print platform And/or the position of printing head.

At this in optional implementation of contactless support means, correspondingly, described upper Denso Put and also have multiple implementation.Alternatively, described electrifying device is in a non-contact manner to described At least one position at least one parts powers on.

In the optional implementation of a kind of electrifying device, described electrifying device is thermionic emission Device, described electrifying device is negative to the upper electric polarity of at least one parts described.

Specifically, described thermionic emission device can be at least one parts described Put heat of emission electronics, increase the quantity of the electronics of this position at least one parts described, from And make this position at least one parts described present negative polarity, correspondingly, if described at least This position on one parts is positioned in an electric field, then at least one parts described can be in this position Place is by electric field force.Further, by controlling described thermionic emission device to this position The thermionic number launched, the upper electricity of the most described thermionic emission device, described in control extremely The quantity of the electronics of this position on few parts, i.e. control at least one parts described The carried charge of this position.

In the optional implementation of another electrifying device, described electrifying device is that ultraviolet shines Injection device, described electrifying device is just to the upper electric polarity of at least one parts described.

Specifically, described ultraviolet lamp can be at least one parts described Put and be irradiated, at least one parts described the electronics of this position by ultraviolet from described to Few parts eject, so that this position positive charge at least one parts described Quantity higher than negative charge quantity, present positive polarity, correspondingly, if at least one portion described This position on part is positioned in an electric field, then at least one parts described can be subject in this position Electric field force.Further, by controlling what described ultraviolet lamp irradiated to this position Intensity, the upper electricity of the most described ultraviolet lamp, controlling should at least one parts described The quantity that the electronics of position is excited, i.e. control this position at least one parts described Carried charge.

In the optional implementation of another contactless support means, described contactless Support arrangement includes the multiple passages being arranged on around print area.Correspondingly, at least through control Make pressure and the ventilation direction of each described passage, control described contactless support means in institute State and at least one parts described are provided the work meeting described required support force by print procedure Firmly.

In the present embodiment, alternatively, 120 include:

According at least to the described required applying position of support force, size and Orientation, generate institute Stating the control instruction of contactless support means, described control instruction is used for controlling described noncontact At least one parts described are provided in described print procedure and meet described institute by formula support means The active force of the support force needed；

In described print procedure, control described contactless support according to described control instruction and fill Put.

Alternatively, 3D printing auxiliary device performed 110 before described print procedure starts, gives birth to Become described control instruction and preserve, according to described control instruction control after described print procedure starts Make described contactless support means.For example, described control instruction may include that described Electrifying device to the upper electric position of at least one parts described, upper electric polarity and upper electricity with institute State the function that at least one parameter is independent variable that print procedure is relevant, and described at least one pair of Electric field intensity between pole plate, direction of an electric field are with at least one parameter relevant with described print procedure Function for independent variable.

Fig. 4 prints the flow process signal of householder method embodiment two for a kind of 3D that the application provides Figure.As shown in Figure 4, the present embodiment includes:

410, according at least part of shape of object, the material printed, institute is determined State at least part of object applying position, size and the side of support force needed at least one parts To.

For example, a kind of 3D that the application provides prints described in auxiliary device embodiment two 3D prints the auxiliary device executive agent as the present embodiment, performs 410～420.Wherein, Described 3D prints auxiliary device can be integrated in 3D printer with the form of hardware and/or software In.

In the present embodiment, described at least part of object can be the complete object printed, Or, a part of object printed in print procedure.In print procedure, described at least Fractional object is changing always, and alternatively, described 3D prints auxiliary device and opens from print procedure The method beginning to perform the present embodiment in real time.

In the present embodiment, alternatively, the shape of described at least part of object, material are according to described The printer model file of object and be currently located in the print procedure of described object which stage Determine.Wherein, the one that the printer model file of described object provides with reference to the application alternatively 3D prints the corresponding description in householder method embodiment one.Alternatively, described at least part of thing The shape of body, material can be measured in real time and obtain.

420, according at least to the described required applying position of support force, size and Orientation, control Make a contactless support means and at least one parts described offer is met described required propping up The active force of support force.

In the present embodiment, determine in described at least part of object needed at least one parts in 410 Support force apply position, size and Orientation it may be that determine described required support force Apply position, the occurrence of size and Orientation, or, determine executing of described required support force Add the condition met needed for position, size and Orientation.Correspondingly, it may be that at least in 420 According to described required support force apply position, the occurrence of size and Orientation controls one and non-connects Described at least one parts are provided and apply position, size and Orientation equally by touch support means Active force, or, according at least to the described required applying position of support force, size and Orientation The required condition met, controlling a contactless support means provides at least one parts described Applying position, size and Orientation meet the active force of described condition.

Alternatively, control contactless support means in described applying position towards described direction to institute State at least one parts and apply the active force of described size.

At least part of shape of object, the material that the present embodiment has been printed by basis, Determine in described at least part of object the applying position of support force needed at least one parts, big Little and direction, and control a contactless support means and at least one parts described are provided meet The active force of described required support force, it is provided that a kind of scheme assisting 3D to print, specifically Ground, utilizes contactless support force to replace the supporting construction printed to enter parts at least in part Row supports, and saves time-write interval and printed material, and avoids excision supporting construction to thing The impact of external sight.

In the present embodiment, owing to there is stress between each several part adjacent in an object, correspondingly, According to mutual stress, described object can be divided into multiple parts.Due to adjacent in an object Each several part between stress such as print procedure change, alternatively, described middle parts of objects The division of part is likely to along with print procedure changes.

Wherein, some parts may need to support in print procedure, and some parts is printed Perhaps without support in journey.Alternatively, the present embodiment printed in described basis one At least partly the shape of object, material, determine at least one parts in described at least part of object Before the required applying position of support force, size and Orientation, also include:

Shape according to printed at least partly object and material, determine described at least Fractional object needs at least one parts described supported.

In the present embodiment, alternatively, for the support force needed at least one parts described, can Based on the constraints such as equalising torque and stress balance, to determine executing of described required support force Add position, direction and size.With parts for example, Fig. 2 A, 2B are respectively this Shen In please in print procedure a kind of schematic diagram of support force needed for parts the most in the same time.At t1 Moment performs the support force T1 needed for the method for the present embodiment, parts 1 as shown in Figure 2 A, A kind of 3D that concrete determination mode refers to the application and provides prints householder method embodiment one Corresponding description, here is omitted；At the method that the t2 moment performs the present embodiment, parts 1 As shown in Figure 2 B, concrete determination mode refers to the application to be provided required support force T2 A kind of 3D print the corresponding description of householder method embodiment one, here is omitted.

At this in optional implementation of contactless support means, correspondingly, control described non- At least one parts described are provided and meet described required support force by contact support means Active force also has multiple implementation.

In the optional implementation of a kind of control, described according at least to described required support force Applying position, size and Orientation, control a contactless support means to described at least one Parts provide the active force meeting described required support force, including:

According at least to the described required applying position of support force, size and Orientation, control described At least one parts described are powered on by electrifying device, and control at least one pair of pole plate pair described At least one parts described produce the electric field force meeting described required support force.

It is it should be noted that if at least one parts described are positioned between multipair pole plate, the most charged At least one parts described are simultaneously by the electric field force of multiple electric fields, now, and the electricity of the plurality of electric field Support force needed for satisfied at least one parts described of making a concerted effort of field force.

Fig. 3 is that in the application, the one of the electric field force that parts are suffered between a pair pole plate is shown Being intended to, here is omitted.

Alternatively, described applying position, size and side according at least to described required support force To, control powering on of at least one parts described in described electrifying device, and described in controlling at least A pair pole plate produces the electric field force meeting described required support force at least one parts described, Including:

According at least to the described required applying position of support force, size and Orientation, control described Electrifying device to the upper electric position of at least one parts described, upper electric polarity and upper electricity, and Control the electric field intensity between at least one pair of pole plate described and direction of an electric field.

In the optional implementation of another contactless support means, described contactless Support arrangement includes the multiple passages being arranged on around print area.Correspondingly, at least through control Make pressure and the ventilation direction of each described passage, control described contactless support means to institute The offer of at least one parts is provided and meets described required support force.

The structure that Fig. 5 A prints auxiliary device embodiment one for a kind of 3D that the application provides is shown It is intended to.As shown in Figure 5A, 3D printing auxiliary device 500 includes:

First determines module 51, for the printer model file according to an object, determines described Executing of the support force that at least one parts in object are required in the print procedure of described object Add position, size and Orientation；

Control module 52, for the applying position, big according at least to described required support force Little and direction, controls a contactless support means in described print procedure to described at least one Individual parts provide and meet described required support force.

In the present embodiment, first determines that module 51 may determine that executing of described required support force Add the occurrence of position, size and Orientation, or, determine the applying of described required support force The condition met needed for position, size and Orientation.Correspondingly, control module 52 can be at least According to described required support force apply position, the occurrence of size and Orientation controls one and non-connects Touch support means provides same at least one parts described in described print procedure and applies Position, the active force of size and Orientation, or, according at least to executing of described required support force Add the condition met needed for position, size and Orientation, control a contactless support means in institute State and at least one parts described are provided by print procedure applying position, size and Orientation meet institute State the active force of condition.

Alternatively, control module 52 controls described contactless support means in described applying position Put the active force that towards described direction, at least one parts described are applied described size.

In the present embodiment, control module 52 controls described contactless support means and uses non-connecing The mode touched provides described active force, and described contactless support means is at least one portion described The described active force that part provides is not based on described contactless support means and described at least The contact of individual parts and produce.Alternatively, described contactless support means not with described extremely A few component contact, still optionally further, described contactless support means not with described thing Other component contact of body.For example, the described work that described contactless support means provides Firmly it may be that the impulse force of gas or suction, the electric field electric field force to electrical body, ultrasound wave or The active force etc. of light wave.

The 3D of the present embodiment prints auxiliary device 500 and can set with the form of hardware and/or software Put in a 3D printer.Alternatively, described contactless support means is also disposed at described In 3D printer.The 3D of the present embodiment print auxiliary device by first determine module according to The printer model file of one object, determines that at least one parts in described object are at described object Print procedure in the required applying position of support force, size and Orientation, control module controls One contactless support means provides full at least one parts described in described print procedure The active force of the described required support force of foot, it is provided that a kind of scheme assisting 3D to print, tool Body ground, utilizes contactless support force to replace the supporting construction printed to parts at least in part It is supported, saves time-write interval and printed material, and avoid excision supporting construction pair The impact of object outward appearance.

Illustrate that below by some optional implementations the 3D of the present embodiment prints further Auxiliary device 500.

Wherein, some parts may need to support in print procedure, and some parts is printed Perhaps without support in journey.Alternatively, as shown in Figure 5 B, 3D prints auxiliary device 500 Also include: second determines module 53, for according to described printer model file, determine described Object needs in described print procedure at least one parts described in support.

For example, for each parts, second determines that module 53 all can be according to these parts Shape, material determine the center of gravity of these parts, further, according at least to these parts center of gravity, The structural relation of each parts adjacent with these parts and these parts, and these parts and with these parts The page order of adjacent each parts, it may be determined that these parts are the need of support.

In the present embodiment, owing to there is stress, and each portion between each parts adjacent in an object The page order of part has successively, and therefore, in the print procedure of described object, whether each parts need Want support force and required support force all can change.Alternatively, second determines module 53 at least one parts needing to support determined change with described print procedure.Correspondingly, If second determines that at least one parts described that module 53 determines change with described print procedure, And first determine at least one parts described that module 51 determines needed for support force beat with described Print change in process, then control module 52 controls described contactless support means and beats with described At least one parts described of print change in process provide needed for meeting with the change of described print procedure The active force of support force.

Fig. 2 A, 2B are respectively in the application in print procedure the most in the same time needed for parts A kind of schematic diagram of support force.In the t1 moment, needed for first determines that module 51 determines parts 1 Support force T1 as shown in Figure 2 A, concrete determination mode refer to the application provide one Planting 3D and print the corresponding description of householder method embodiment one, here is omitted；In the t2 moment, First determines that module 51 determines the support force T2 needed for parts 1 as shown in Figure 2 B, concrete Determine that mode refers to the corresponding of a kind of 3D printing householder method embodiment one of the application offer Describing, here is omitted.Comparison diagram 2A, 2B are it can be seen that support needed for parts 1 Power changes with print procedure.

At this in optional implementation of contactless support means, correspondingly, control module 52 control described contactless support means in described print procedure at least one portion described Part provides the active force meeting described required support force also to have multiple implementation.

In the optional implementation of a kind of control, control module 52 is specifically at least root According to the described required applying position of support force, size and Orientation, control described electrifying device and exist At least one parts described are powered on by described print procedure, and control described at least one pair of At least one parts described are produced in described print procedure and meet described required propping up by pole plate The electric field force of support force.

Alternatively, control module 52 specifically for: according at least to described required support force Apply position, size and Orientation, at least one parts and each institute described in described print procedure State the relative position of ultrasonic transmitter, control the ultrasonic of the plurality of ultrasonic transmitter transmitting Wave interference forms at least one focus beam providing described active force.

Implementing of this implementation can refer to a kind of 3D printing auxiliary square that the application provides Method embodiment one.

In the optional implementation of another contactless support means, described contactless Support arrangement includes the multiple passages being arranged on around print area.Correspondingly, control module 52, at least through controlling the pressure of each described passage and direction of ventilating, control described noncontact At least one parts described are provided in described print procedure and meet described institute by formula support means The active force of the support force needed.

In the present embodiment, alternatively, control module 52 includes:

Instruction signal generating unit, for the applying position, big according at least to described required support force Little and direction, generates the control instruction to described contactless support means, described control instruction For control described contactless support means in described print procedure to described at least one Parts provide the active force meeting described required support force；

Control unit, in described print procedure, controls described according to described control instruction Contactless support means.

Alternatively, described instruction signal generating unit generated described control before described print procedure starts System instruction also preserves, and described control unit refers to according to described control after described print procedure starts Order controls described contactless support means.For example, described control instruction may include that Described electrifying device to the upper electric position of at least one parts described, upper electric polarity and upper electricity with The function that at least one parameter be independent variable relevant with described print procedure, and described at least Electric field intensity between a pair pole plate, direction of an electric field are with at least one relevant with described print procedure Parameter is the function of independent variable.

The structure that Fig. 6 A prints auxiliary device embodiment two for a kind of 3D that the application provides is shown It is intended to.As shown in Figure 6A, 3D printing auxiliary device 600 includes:

First determines module 61, for the shape according at least part of object printed Shape, material, determine in described at least part of object executing of the support force needed at least one parts Add position, size and Orientation；

Control module 62, for the applying position, big according at least to described required support force Little and direction, controlling a contactless support means provides at least one parts described and meets institute State the active force of required support force.

In the present embodiment, described at least part of object can be the complete object printed, Or, a part of object printed in print procedure.In print procedure, described at least Fractional object is changing always, alternatively, starts to start 3D from print procedure and prints auxiliary dress Put 600.

In the present embodiment, first determines that module 61 may determine that executing of described required support force Add the occurrence of position, size and Orientation, or, determine the applying of described required support force The condition met needed for position, size and Orientation.Correspondingly, control module 62 can be at least According to described required support force apply position, the occurrence of size and Orientation controls one and non-connects Described at least one parts are provided and apply position, size and Orientation equally by touch support means Active force, or, according at least to the described required applying position of support force, size and Orientation The required condition met, controlling a contactless support means provides at least one parts described Applying position, size and Orientation meet the active force of described condition.

Alternatively, control module 62 controls contactless to be supported on described applying position towards described Direction applies the active force of described size at least one parts described.

In the present embodiment, control module 62 controls described contactless support means and uses non-connecing Touch mode described active force is provided, the most described contactless support means to described at least one Parts provide described active force be not based on described contactless support means with described at least The contact of one parts and produce.Alternatively, described contactless support means is not with described At least one component contact, still optionally further, described contactless support means is not with described Other component contact of object.For example, what described contactless support means provided is described Active force is it may be that the impulse force of gas or suction, the electric field electric field force to electrical body, ultrasound wave Or the active force etc. of light wave.

The 3D of the present embodiment prints auxiliary device 600 and can set with the form of hardware and/or software Put in a 3D printer.Alternatively, described contactless support means is also disposed at described In 3D printer.

The 3D of the present embodiment prints auxiliary device and determines that module is according to having printed by first At least part of shape of object, a material, determine at least one in described at least part of object The applying position of the support force needed for parts, size and Orientation, control module controls a noncontact Formula support means provides the effect meeting described required support force at least one parts described Power, it is provided that a kind of scheme assisting 3D to print, specifically, utilizes contactless support Power replaces the supporting construction printed to be supported parts at least in part, saves the time-write interval And printed material, and avoid the excision supporting construction impact on object outward appearance.

Illustrate that below by some optional implementations the 3D of the present embodiment prints further Auxiliary device 600.

Wherein, some parts may need to support, and some parts is perhaps without support.Optional Ground, as shown in Figure 6B, 3D prints auxiliary device 600 and also includes:

Second determines module 63, for the shape according at least part of object printed Shape and material, determine at least one parts described needing to support in described at least part of object.

For example, for each parts, second determines that module 63 all can be according to these parts Shape, material determine the center of gravity of these parts, further, according at least to these parts center of gravity, The structural relation of each parts adjacent with these parts and these parts, and these parts and with these parts The page order of adjacent each parts, it may be determined that these parts are the need of support.

In the present embodiment, alternatively, for the support force needed at least one parts described, the One determines that module 61 can determine described based on the constraints such as equalising torque and stress balance Applying position, direction and the size of required support force.With parts for example, figure 2A, 2B are respectively in the application in print procedure the support force needed for parts the most in the same time A kind of schematic diagram.In the t1 moment, first determines that module 61 determines the support needed for parts 1 As shown in Figure 2 A, a kind of 3D that concrete determination mode refers to the application and provides beats power T1 The corresponding description of print householder method embodiment one, here is omitted；In the t2 moment, first Determine that module 61 determines the support force T2 needed for parts 1 as shown in Figure 2 B, concrete determination A kind of 3D that mode refers to the application and provides prints retouching accordingly of householder method embodiment one Stating, here is omitted.

At this in optional implementation of contactless support means, correspondingly, control module 62 control described contactless support means meets described institute at least one parts described offer The active force of the support force needed also has multiple implementation.

In the optional implementation of a kind of control, control module 62 is specifically at least root According to the described required applying position of support force, size and Orientation, control described electrifying device pair Powering on of at least one parts described, and control at least one pair of pole plate described to described at least one Individual parts produce the electric field force meeting described required support force.

Alternatively, control module 62 specifically for: according at least to described required support force Apply position, size and Orientation, control upper at least one parts described of described electrifying device Electric position, upper electric polarity and upper electricity, and control the electric-field strength between at least one pair of pole plate described Degree and direction of an electric field.

Implementing of this implementation can refer to a kind of 3D printing auxiliary square that the application provides Method embodiment two.

In the optional implementation of another contactless support means, described contactless Support arrangement includes the multiple passages being arranged on around print area.Correspondingly, control module 62, at least through controlling the pressure of each described passage and direction of ventilating, control described noncontact Formula support means provides the effect meeting described required support force at least one parts described Power.

The structural representation of a kind of 3D printer embodiment that Fig. 7 A provides for the application.As Shown in Fig. 7 A, 3D printer 700 includes: a 3D prints auxiliary device 71 and and non-connects Touch support means 72.

In the optional implementation of one, 3D prints what auxiliary device 71 provided for the application A kind of 3D printing 3D printing auxiliary device described in auxiliary device embodiment one, correspondingly, 3D prints auxiliary device 71 and is used for: according to the printer model file of an object, determine described thing The applying of the support force that at least one parts in body are required in the print procedure of described object Position, size and Orientation；According at least to the described required applying position of support force, size and Direction, control contactless support means 72 in described print procedure to described at least one Parts provide the active force meeting described required support force.

Implementing of this implementation can refer to a kind of 3D printing auxiliary dress that the application provides Put embodiment one.

In another optional implementation, 3D prints auxiliary device 71 and provides for the application A kind of 3D print 3D described in auxiliary device embodiment two and print auxiliary device, correspondingly, 3D prints auxiliary device 71 and is used for: according to the shape of printed at least partly object, Material, determines in described at least part of object the applying position of support force needed at least one parts Put, size and Orientation；Applying position, size and side according at least to described required support force To, control contactless support means 72 and at least one parts described offer is met described institute The active force of the support force needed.

Implementing of this implementation can refer to a kind of 3D printing auxiliary dress that the application provides Put embodiment two.

In the present embodiment, contactless support means 72 also has multiple implementation.In one In optional implementation, as shown in Figure 7 B, contactless support means 72 includes: be used for The electrifying device 721 that powers on at least one parts described and being arranged on around print area At least one pair of pole plate 722.It should be noted that figure is only illustrated with two pairs of pole plates 722, It is not meant to the restriction of pole plate logarithm in this implementation.

Still optionally further, at least one pair of pole plate 722 described is by being arranged on described print area phase At least one pair of conductive grid of offside is constituted.

In the optional implementation of another, contactless support means 72 includes: arrange Multiple passages around described print area.

Still optionally further, contactless support means 72 includes: be arranged on described print zone At least one passage array of at least side, territory, each passage array includes by certain way Multiple passages of arrangement.

Correspondingly, 3D prints auxiliary device 71 at least through the pressure controlling each described passage With ventilation direction, controlling contactless support means 72 provides full at least one parts described The active force of the described required support force of foot.

The 3D printer of the present embodiment prints the auxiliary device printing according to an object by 3D Model file, determines that at least one parts in described object are in the print procedure of described object The required applying position of support force, size and Orientation, and control a contactless support means At least one parts described are provided by described print procedure and meets described required support force Active force, or, according to printed at least partly shape of object, material, Determine in described at least part of object the applying position of support force needed at least one parts, big Little and direction, and control a contactless support means and at least one parts described are provided meet The active force of described required support force, it is provided that a kind of scheme assisting 3D to print, specifically Ground, utilizes contactless support force to replace the supporting construction printed to enter parts at least in part Row supports, and saves time-write interval and printed material, and avoids excision supporting construction to thing The impact of external sight.

Those of ordinary skill in the art are it is to be appreciated that combine the embodiments described herein and retouch The unit of each example stated and method step, it is possible to electronic hardware or computer software and Being implemented in combination in of electronic hardware.These functions perform with hardware or software mode actually, Depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can be to often Individual specifically should being used for uses different methods to realize described function, but this realization is not It is considered as beyond the scope of this invention.

If described function realizes and as independent product pin using the form of SFU software functional unit When selling or use, can be stored in a computer read/write memory medium.Based on such Understand, part that original technology is contributed by technical scheme the most in other words or The part of this technical scheme of person can embody with the form of software product, this computer software Product is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs the present invention, and each is real Execute all or part of step of method described in example.And aforesaid storage medium includes: USB flash disk, shifting Dynamic hard disk, read only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey The medium of sequence code.

Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant The those of ordinary skill of technical field, without departing from the spirit and scope of the present invention, Can also make a variety of changes and modification, the technical scheme of the most all equivalents falls within the present invention Category, the scope of patent protection of the present invention should be defined by the claims.

Claims

1. a 3D prints householder method, it is characterised in that described method includes:

According at least to the described required applying position of support force, size and Orientation, control one non- At least one parts described are provided in described print procedure and meet institute by contact support means State the active force of required support force；

Described contactless support means includes: be used for powered on at least one parts described Electrifying device and at least one pair of pole plate being arranged on around print area.

Method the most according to claim 1, it is characterised in that described printer model literary composition Part includes: the shape of described object, material, page order.

Method the most according to claim 1, it is characterised in that described required support Applying position, size and/or the direction of power change with described print procedure.

Method the most according to claim 1, it is characterised in that described according at least to institute State the applying position of required support force, size and Orientation, control a contactless support means At least one parts described are provided by described print procedure and meets described required support force Active force, including:

Method the most according to claim 4, it is characterised in that described according at least to institute State the applying position of required support force, size and Orientation, control described electrifying device described At least one parts described are powered on by print procedure, and controls at least one pair of pole plate described At least one parts described are produced by described print procedure and meets described required support force Electric field force, including:

Method the most according to claim 1, it is characterised in that described electrifying device is Thermionic emission device, the upper electric polarity of at least one parts described is by described electrifying device Negative.

Method the most according to claim 1, it is characterised in that described electrifying device is Ultraviolet lamp, the upper electric polarity of at least one parts described is by described electrifying device Just.

8. according to described method arbitrary in claim 1～7, it is characterised in that described Printer model file according to an object, determines that at least one parts in described object are described Before the applying position of support force required in the print procedure of object, size and Orientation, also wrap Include:

9. a 3D prints householder method, it is characterised in that described method includes:

According at least to the described required applying position of support force, size and Orientation, control one non- At least one parts described are provided and meet described required support force by contact support means Active force；Described contactless support means includes: for powering on at least one parts described An electrifying device and at least one pair of pole plate of being arranged on around print area.

Method the most according to claim 9, it is characterised in that described according at least to institute State the applying position of required support force, size and Orientation, control a contactless support means At least one parts described are provided the active force meeting described required support force, including:

According at least to the described required applying position of support force, size and Orientation, control described Powering on of at least one parts described in electrifying device, and control at least one pair of pole plate described to institute State at least one parts and produce the electric field force meeting described required support force.

11. methods according to claim 10, it is characterised in that described according at least to The described required applying position of support force, size and Orientation, control described in described electrifying device Powering on of at least one parts, and control at least one pair of pole plate described at least one portion described Part produces the electric field force meeting described required support force, including:

12. according to described method arbitrary in claim 9～11, it is characterised in that described Electrifying device is thermionic emission device, and described electrifying device is upper at least one parts described Electric polarity is negative.

13. according to described method arbitrary in claim 9～11, it is characterised in that described Electrifying device is ultraviolet lamp, and described electrifying device is upper at least one parts described Electric polarity is just.

14. according to described method arbitrary in claim 9～11, it is characterised in that in institute State according at least part of shape of object, the material that printed, determine described at least portion In point object before the applying position of support force needed at least one parts, size and Orientation, Also include:

15. 1 kinds of 3D print auxiliary device, it is characterised in that described device includes:

Control module, for according at least to the described required applying position of support force, size and Direction, controls a contactless support means in described print procedure at least one portion described Part provides the active force meeting described required support force；Described contactless support means bag Include: for the electrifying device that powers on at least one parts described be arranged on print area week At least one pair of pole plate enclosed.

16. devices according to claim 15, it is characterised in that described printer model File includes: the shape of described object, material, page order.

17. devices according to claim 15, it is characterised in that described required propping up Applying position, size and/or the direction of support force change with described print procedure.

18. devices according to claim 15, it is characterised in that described control module Specifically for: according at least to the described required applying position of support force, size and Orientation, control Make described electrifying device in described print procedure, at least one parts described to be powered on, and Control at least one pair of pole plate described in described print procedure, at least one parts described to be produced Meet the electric field force of described required support force.

19. devices according to claim 18, it is characterised in that described control module Specifically for: according at least to the described required applying position of support force, size and Orientation, control Make described electrifying device in described print procedure to the upper electric position of at least one parts described, Between upper electric polarity and upper electricity, and control at least one pair of pole plate described in described print procedure Electric field intensity and direction of an electric field.

20. devices according to claim 15, it is characterised in that described electrifying device For thermionic emission device, the upper electric polarity of at least one parts described is by described electrifying device Negative.

21. devices according to claim 15, it is characterised in that described electrifying device For ultraviolet lamp, the upper electric polarity of at least one parts described is by described electrifying device Just.

22. according to described device arbitrary in claim 15～21, it is characterised in that described Device also includes: second determines module, for according to described printer model file, determines described Object needs in described print procedure at least one parts described in support.

23. 1 kinds of 3D print auxiliary device, it is characterised in that described device includes:

Control module, for according at least to the described required applying position of support force, size and Direction, controls a contactless support means and at least one parts described offer is met described institute The active force of the support force needed；Described contactless support means includes: for described at least An electrifying device that one parts power on and at least one pair of pole plate being arranged on around print area.

24. devices according to claim 23, it is characterised in that described control module Specifically for: according at least to the described required applying position of support force, size and Orientation, control Make powering on of at least one parts described in described electrifying device, and control at least one pair of pole described Plate produces the electric field force meeting described required support force at least one parts described.

25. devices according to claim 24, it is characterised in that described control module Specifically for: according at least to the described required applying position of support force, size and Orientation, control Make described electrifying device to upper electric position, the upper electric polarity of at least one parts described and to power on Amount, and control the electric field intensity between at least one pair of pole plate described and direction of an electric field.

26. according to described device arbitrary in claim 23～25, it is characterised in that described Electrifying device is thermionic emission device, and described electrifying device is upper at least one parts described Electric polarity is negative.

27. according to described device arbitrary in claim 23～25, it is characterised in that described Electrifying device is ultraviolet lamp, and described electrifying device is upper at least one parts described Electric polarity is just.

28. according to described device arbitrary in claim 23～25, it is characterised in that described Device also includes:

Second determines module, for according to the shape of an at least part of object printed with Material, determines at least one parts described needing to support in described at least part of object.

29. 1 kinds of 3D printers, it is characterised in that including: just like claim 15～28 In arbitrary described 3D print auxiliary device and described contactless support means.