CN104924620B - One kind has multi-jet 3D printers and its Method of printing - Google Patents

Abstract

One kind has multi-jet 3D printer and its Method of printing, described to include a product parameters presetting module with multi-jet 3D printer, and one is scraped board parameter presetting module, and a scraper plate prints number of plies setup module, a Nozzle Parameter assignment module.It is described with multi-jet 3D printer and Method of printing using print parameters or print code of each functional module to nozzle setting, so that any one nozzle have printed described scraper plate in not printout, and described scraper plate is multiple annulars being arranged with one heart, nozzle can be protected to realize the more effective cleaning to nozzle from inside to outside or in the reciprocating motion of ecto-entad, simultaneously because printing the scraper plate, use up the hot melt material of nozzle head, allow that the nozzle head has sufficient material, when printout again, the generation in gap can be avoided, reduce the fraction defective of finished product.The invention further relates to a kind of Method of printing with multi-jet 3D printer.

Description

One kind has multi-jet 3D printer and its Method of printing

Technical field

There is multi-jet 3D printer and its printing side the present invention relates to 3D printing technique field, more particularly to one kind Method.

Background technology

With the development of printer technology, the 3D printer that can print 3 D stereo article gradually rises.Conventional ink-jet Printer is that ink is sprayed onto on the carriers such as paper to show a width two-dimensional image.And 3D printer does not rely on ink to show Show, but rely on the raw material true such as plastics, metal.General 3D printer passes through shower nozzle after raw material are heated and softened It is ejected into specific region.Then, 3D printer, will continuous slim layer after a series of digital slices that computer is completed are received Face is stacked up, until a threedimensional solid forming objects.It can be seen that, 3D printer can realize direct printing shaping product, from And provide a kind of new manufacture.

At present, FDM (Fused Deposition Modeling) technique is a kind of Layered Manufacturing Technology of 3D printer, Each layer in model melts nozzle interior material by heated nozzle, sprays extruding and hot melting silk, by material stacking successively most The manufacture of whole implementation model.Conventional three-dimensional printer only possesses a nozzle, a kind of material can only be once printed, with technology Development, occurs in that the printer with multiple nozzles, can be printed using multiple material in print procedure.

But, current multiinjector three-dimensional printer still suffers from a problem, i.e., because FDM printers use hot melt material Material, material has mobility after the heating, therefore there is the stagnant phenomenon of the stream of material in print procedure, i.e., when one of spray In printing, other nozzles for waiting have the phenomenon of hot melt material outflow to mouth.This problem is on multiinjector three-dimensional printer It is especially serious.Nozzle cleaning problem is brought first, when a nozzle operation, the material of other idle nozzle outflows Can be bonded on "current" model, the printing to current nozzle is interfered, material deficiency problem in nozzle be produced in addition, due to material Stream it is stagnant cause not have in nozzle the material of abundance, when this nozzle is started working, start material in one segment limit of printing and extrude It is insufficient, cause printer model gap occur.

The content of the invention

In view of this, the present invention provide it is a kind of can avoid flowing stagnant phenomenon it is insufficient with material extrusion in nozzle with many The 3D printer and its Method of printing of nozzle, to meet the demand.

One kind has multi-jet 3D printer, and it has N number of nozzle, wherein N >=2, described to be beaten with multi-jet 3D The product that print machine is printed includes a finished product, and N number of scraper plate being arranged on beside the finished product, it is characterised in that：It is described to have Multi-jet 3D printer includes：

One product parameters presetting module, the print parameters for presetting the finished product to be printed, the print parameters Number of plies LayerCnt is printed including maximum coordinates ObjectMax and min coordinates ObjectMin, and the overall of the finished product；

One is scraped board parameter presetting module, the print parameters for presetting N number of scraper plate respectively, including printing one cuts Face is the trajectory parameters of rectangle, and the ScrapL long and width ScrapW of a circle of each scraper plate outermost are inclined between ectonexine Put coefficientAndSpan beOffset distance ScrapD between two adjacent scraper plates, n-th scraper plate Relative to the offset distance ObjectScrapD of the printout, and each layer of each scraper plate of number of turns n；

One scraper plate printing number of plies setup module, the printing number of plies for setting scraper plate, the printing number of plies of the scraper plate is under Formula is stated to obtain：

LoopCnt=max { LayerCnt, 10 }

Wherein, LoopCnt is the printing number of plies of scraper plate；

LayerCnt is the overall printing number of plies of printed finished product；

One scraper plate coordinate calculation module, the printing coordinate for calculating n-th scraper plate, the printing of the n-th scraper plate The printing coordinate of starting point coordinate and the (n-1)th circle is calculated by following formula：

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate.

One Nozzle Parameter assignment module, for by the print parameters of the print parameters of the finished product and n-th scraper plate N-th nozzle is assigned to so that the finished product and n-th scraper plate of the n-th nozzle print appropriate section.

Further, it is described also to include a Nozzle Parameter presetting module, nozzle ginseng with multi-jet 3D printer Number presetting modules are used to preset the print parameters of N number of nozzle respectively, print parameters include between two adjacent nozzles away from From ED.

Further, the offset distance between the distance between described two adjacent nozzles ED and described two adjacent scraper plates It is equal from ScrapD.

Further, the cross section of the scraper plate is rectangle.

Further, the cross section of the scraper plate is square.

A kind of Method of printing with multi-jet 3D printer, the 3D printer has N number of nozzle, wherein N >=2, The product that the 3D printer is printed includes a finished product, and N number of scraper plate being arranged on beside the finished product, described with many sprays The Method of printing of the 3D printer of mouth comprises the following steps：

A product parameters presetting module is provided, the print parameters for presetting the finished product to be printed, the printing Parameter includes maximum coordinates ObjectMax and min coordinates ObjectMin, and the overall of the finished product prints the number of plies LayerCnt；

There is provided one and scrape board parameter presetting module, the print parameters for presetting N number of scraper plate respectively, including printing one The trajectory parameters of individual rectangular cross-section, the ScrapL long and width ScrapW of a circle of each scraper plate outermost, between ectonexine Biasing coefficientAndSpan beOffset distance ScrapD between two adjacent scraper plates, n-th Offset distance ObjectScrapD, and each layer of each scraper plate of number of turns n of the scraper plate relative to the printout；

One scraper plate printing number of plies setup module, the printing number of plies for setting scraper plate, the printing number of plies of the scraper plate are provided Obtained by following formula：

LoopCnt=max { LayerCnt, 10 }

Wherein, LoopCnt is the printing number of plies of scraper plate；

LayerCnt is the overall printing number of plies of printed finished product；

One scraper plate coordinate calculation module of offer, the printing coordinate for calculating n-th scraper plate, the n-th scraper plate The printing coordinate of printing starting point coordinate and the (n-1)th circle is calculated by following formula：

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate；

A Nozzle Parameter assignment module is provided, for by the printing of the print parameters of the finished product and n-th scraper plate Parameter assignment is to n-th nozzle so that the finished product of the n-th nozzle print appropriate section and n-th scraper plate.

Further, before step provides a Nozzle Parameter assignment module, also a nozzle ginseng is provided including step Number presetting module, the Nozzle Parameter presetting module is used to preset respectively the print parameters of N number of nozzle, and print parameters include two The distance between individual adjacent nozzle ED.

Further, the offset distance between the distance between described two adjacent nozzles ED and described two adjacent scraper plates It is equal from ScrapD.

Further, the cross section of the scraper plate is rectangle.

Further, the cross section of the scraper plate is square.

The technique effect of design of the invention, concrete structure and generation is described further below with reference to accompanying drawing, with It is fully understood from the purpose of the present invention, feature and effect.

Brief description of the drawings

Fig. 1 is a kind of theory diagram with multi-jet 3D printer that the present invention is provided.

Fig. 2 is a kind of flow chart of Method of printing with multi-jet 3D printer that the present invention is provided.

Specific embodiment

As shown in figure 1, being a kind of theory diagram with multi-jet 3D printer 100 for providing of the invention.The tool Having multi-jet 3D printer 100 has N number of nozzle, wherein N >=2, for being printed by various in the manufacturing process along with The product that material is made.In the present embodiment, as the 3D printer and its multiple nozzles for having of hardware not in figure Show, during it is the prior art known by those skilled in the art.The computer that the 3D printer inside has simultaneously is hard Part such as central processing unit, memory, input/output interface, instruction performs hardware or software, and the hardware or software of program execution are all The conventional equipment being had by any one 3D printer, is all known by those skilled in the art, without in the present embodiment It is specifically noted.

It should be noted that described include a finished product, and N with the product that multi-jet 3D printer 100 is printed The individual scraper plate being arranged on beside the finished product.The finished product can be any products, and the input of its print parameters has multiinjector at this 3D printer 100 in.The scraper plate to be printed be avoid the outflow of the multiple nozzle material be bonded at "current" model or Cause printout the phenomenon in gap occur and design on finished product and because material extrusion is insufficient.

Described to include a product parameters presetting module 10 with multi-jet 3D printer 100, scraper plate is joined one by one Number presetting module 11, a scraper plate printing number of plies setup module 12, a scraper plate coordinate calculation module 13 and a nozzle ginseng Number assignment module 14.It is electrically connected with to transmit data each other with instruction and by the tool between four above-mentioned functional modules Having in multi-jet 3D printer 100 has other hardware and performs to print the finished product with multiple scraper plates.

The product parameters presetting module 10 is used for the print parameters of the default finished product to be printed.It is described to be printed The print parameters of finished product should at least include the overall printing number of plies LayerCnt of the finished product, and the maximum of each layer finished product is sat Mark ObjectMax and min coordinates ObjectMin.The finished product is piled up by plurality of layers and formed, and each layer of print parameters are all This is entered into first with multi-jet 3D printer, then just by having other hardware in the 3D printer 100 Perform.It will, of course, be appreciated that, the print parameters of the finished product to be printed not only include above-mentioned overall printable layer Number, and each layer of maximum coordinates and min coordinates, also including other some parameters, such as trajectory parameters, each layer of thickness Degree parameter etc..In the parameter involved by the present embodiment merely to illustrating structure ＆ working mechanism of the invention.

The board parameter presetting module 11 of scraping for presetting the print parameters of each scraper plate in N number of scraper plate respectively. The print parameters include printing one trajectory parameters of rectangular cross-section, each scraper plate outermost one circle ScrapL long and ScrapW wide, the biasing coefficient between ectonexineOffset distance ScrapD between two adjacent scraper plates, the N number of scraper plate relative to the finished product of the printing offset distance ObjectScrapD, and each layer of each scraper plate of circle Number n.For the convenience of printing, the scraper plate printed in the present embodiment can be square, such as square or rectangle.Scraped when described When plate is for square, the ScrapL long and width ScrapW will be equal, and when being rectangle, the ScrapL long and width ScrapW will It is unequal.It is such as circular it is envisioned that the section of the scraper plate can also be other shapes or irregular shape, then its rail Mark parameter will change.By the scraper plate that is printed, by a-circle-by-a-circle square, interval setting is constituted each other, institute It is unequal with the length and width between each circle and an adjacent circle, in the present embodiment, is set using the biasing coefficient Put.Simultaneously according to the number of turns of each scraper plate, the length and width of length and width relative to outmost turns of the scraper plate of each circle, i.e. ScrapL ×aⁿWith ScrapW × aⁿ, wherein n is the number of turns inwardly counted from outmost turns.Because each nozzle will print one, and its is corresponding Scraper plate, therefore offset distance ScrapD is needed between two adjacent scraper plates, to avoid being interfered between two scraper plates. It is envisioned that long ScrapLs or width ScrapW of the offset distance ScrapD more than each scraper plate.Also each Scraper plate must not also interfere printed finished product, therefore also need to set skew of each scraper plate relative to the finished product of the printing Apart from ObjectScrapD, printed finished product is damaged to avoid scraper plate from intersecting with finished product.It is envisioned that above-mentioned is each Individual parameter needs to be separately input in described each nozzle with multi-jet 3D printer.

The scraper plate printing number of plies setup module 12 is used to set the printing number of plies of each scraper plate.Each scraper plate is beaten The print number of plies can freely be set, and can also can lack more, while can also can also be than finished product more than the printing number of plies of finished product The printing number of plies is few.In the present embodiment, the printing number of plies of each layer of scraper plate is obtained by following formula：

LoopCnt=max { LayerCnt, 10 }

Wherein, LoopCnt is the printing number of plies of scraper plate；

LayerCnt is the overall printing number of plies of printed finished product；

By above-mentioned formula it is known that the printing number of plies of each scraper plate is up to 10 layers, if finished product is beaten The print number of plies is less than 10 layers, then the printing number of plies of scraper plate and the printing number of plies of finished product are equal.Such being provided with prints beneficial to saving Time.

The scraper plate coordinate calculation module 13 is used to calculating the printing coordinate of n-th scraper plate, namely each scraper plate is beaten Print coordinate.The printing coordinate of the printing starting point coordinate of each scraper plate and the (n-1)th circle is calculated by following formula：

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate；

It is envisioned that when the starting point coordinate that each scraper plate is determined, after long and width, as to how printing one four Square scraper plate, then be the technology known by those skilled in the art.Because in the prior art, printing one than square more Complicated finished product can, trajectory parameters of that one square of printing are a very simple things.

The Nozzle Parameter assignment module 14 is used for the print parameters of the print parameters of the finished product and n-th scraper plate N-th nozzle is assigned to so that the finished product and n-th scraper plate of the n-th nozzle print appropriate section.The Nozzle Parameter is assigned Be loaded into the parameter of above-mentioned default parameter and each scraper plate in each corresponding nozzle respectively by value module 14, opens Described in dynamic described finished product and scraper plate can be then printed with multi-jet 3D printer 100.

It is described to further comprise a Nozzle Parameter presetting module 15 with multi-jet 3D printer 100.The nozzle Parameter presetting module 15 is used to preset respectively the parameter of N number of nozzle, the i.e. parameter of each nozzle.The parameter includes two phases The distance between adjacent nozzle ED, can also include other specification, such as flow velocity of hot melt material, temperature of nozzle etc. certainly. In the present embodiment, the lowest distance value between scraper plate the distance between described two adjacent nozzles ED adjacent with any two ScrapD is equal, to save the time-write interval of nozzle and allow nozzle in each self-corresponding " scraper plate " range of motion.

Further, the offset distance between the distance between described two adjacent nozzles ED and described two adjacent scraper plates It is equal from ScrapD.

The Method of printing with multi-jet 3D printer comprises the following steps：

S101：A product parameters presetting module 10 is provided for presetting the print parameters of the finished product to be printed.

S102：There is provided one and scrape board parameter presetting module 11 for presetting the print parameters of N number of scraper plate respectively, i.e., The print parameters of each scraper plate.

S103：A scraper plate printing number of plies setup module 12 is provided for setting the printing number of plies of each scraper plate.

S104：There is provided a scraper plate coordinate calculation module 13 for calculate n-th scraper plate printing coordinate, i.e., each The printing coordinate of scraper plate.The printing coordinate of the printing starting point coordinate of the n-th scraper plate and the (n-1)th circle is by following formula meters Calculate：

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate；

S105：A Nozzle Parameter assignment module 14 is provided for the print parameters and n-th of the finished product are scraped The print parameters of plate are assigned to n-th nozzle so that the finished product and n-th scraper plate of the n-th nozzle print appropriate section.

In step S101, the print parameters of the finished product include maximum coordinates ObjectMax and min coordinates ObjectMin, and the overall of the finished product prints number of plies LayerCnt.It is envisioned that the print parameters of the finished product are also Including some trajectory parameters, for finished product described in each nozzle print, a panda or automobile component are such as printed.

In step s 102, the print parameters of each scraper plate include the length of a circle of each scraper plate outermost ScrapL and width ScrapW, the biasing coefficient between ectonexineAndSpan beTwo adjacent scraper plates Between offset distance ScrapD, n-th scraper plate relative to the printout offset distance ObjectScrapD, and often One each layer number of turns n of scraper plate etc..Similarly, the print parameters of each scraper plate also include trajectory parameters, to print such as The scraper plate of square or rectangular.

In step s 103, the printing number of plies of each scraper plate is obtained by following formula：

LoopCnt=max { LayerCnt, 10 }

Wherein, LoopCnt is the printing number of plies of scraper plate；

LayerCnt is the overall printing number of plies of printed finished product；

The setting reason of the printing number of plies of each scraper plate will not be repeated here outlined above.

In step S104, the printing coordinate of the printing starting point coordinate of the n-th scraper plate and the (n-1)th circle is by following public affairs Formula is calculated：

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate；

By above-mentioned computing formula, you can all print parameters of each scraper plate are calculated, in conjunction with scraper plate Other print parameters such as trajectory parameters, so as to complete the printing of each scraper plate.

In step S105, the parameter of above-mentioned default parameter and each scraper plate is loaded into each phase respectively In the nozzle answered, startup is described can then to print described finished product and scraper plate with multi-jet 3D printer 100.

The Method of printing with multi-jet 3D printer, also including step S106, that is, provides a Nozzle Parameter Presetting module 15 for respectively preset N number of nozzle print parameters, print parameters include two adjacent nozzles between Apart from ED.In the present embodiment, between scraper plate the distance between described two adjacent nozzles ED adjacent with any two most ScrapD is equal for small distance value, to save the time-write interval of nozzle and allow nozzle in each self-corresponding " scraper plate " range of motion.

Compared with prior art, it is provided by the present invention to utilize each function with multi-jet 3D printer and Method of printing Setting of the module to the print parameters or print code of nozzle so that any one nozzle have printed described in not printout Scraper plate, and described scraper plate is multiple annular being arranged with one heart, can protect nozzle from inside to outside or ecto-entad it is past The more effective cleaning to nozzle is realized in multiple motion, simultaneously because the scraper plate is printed, the hot melt material of nozzle head of having used up, Allow that the nozzle head has sufficient material, when printout again, you can avoid the generation in gap, reduce finished product Fraction defective.

Preferred embodiment of the invention described in detail above.It should be appreciated that the ordinary skill of this area is without wound The property made work just can make many modifications and variations with design of the invention.Therefore, in all technical fields technical staff according to By the available technical scheme of logical analysis, reasoning, or a limited experiment in design of the invention, prior art basis, All should be in claims of the invention.

Claims (10)

1. a kind of to have multi-jet 3D printer, it has N number of nozzle, wherein N >=2, described with multi-jet 3D printing The product that machine is printed includes a finished product, and N number of scraper plate being arranged on beside the finished product, it is characterised in that：It is described with many The 3D printer of nozzle includes：

One product parameters presetting module, the print parameters for presetting the finished product to be printed, the print parameters include The overall printing number of plies LayerCnt of the finished product, and each layer finished product maximum coordinates ObjectMax and min coordinates ObjectMin；

One is scraped board parameter presetting module, the print parameters for presetting each scraper plate respectively, including one section of printing It is the trajectory parameters of rectangle, the ScrapL long and width ScrapW, the biasing between ectonexine of a circle of each scraper plate outermost CoefficientAndSpan beOffset distance ScrapD between two adjacent scraper plates, n-th scraper plate phase For the offset distance ObjectScrapD of the printout, and each layer of each scraper plate of number of turns n；

One scraper plate prints number of plies setup module, the printing number of plies for setting each scraper plate, the printing number of plies of the scraper plate by Following formula are obtained：

LoopCnt=max { LayerCnt, 10 }

Wherein, LoopCnt is the printing number of plies of scraper plate；

LayerCnt is the overall printing number of plies of printed finished product；

One scraper plate coordinate calculation module, the printing coordinate for calculating n-th scraper plate, the printing starting point of the n-th scraper plate The printing coordinate of coordinate and the (n-1)th circle is calculated by following formula：

$\left\{\begin{array}{c}{\mathrm{ScrapStart}}_{X\·x}={\mathrm{ObjectMin}}_X+(N-1)\×(ScrapL+ScrapD)\\ {\mathrm{ScrapStart}}_{N\·y}={\mathrm{ObjectMax}}_y+ObjectScrapD+ScrapW\end{array}\right.$

$\left\{\begin{array}{c}{\mathrm{ScrapStart}}_{N\·x\·(n-1)}=\∂{\mathrm{ScrapStart}}_{N\·X}\\ {\mathrm{ScrapStart}}_{N\·y\·(n-1)}=\∂{\mathrm{ScrapStart}}_{N\·y}\end{array}\right.$

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate；

One Nozzle Parameter assignment module, for by the print parameters assignment of the print parameters of the finished product and n-th scraper plate To n-th nozzle so that the finished product of the n-th nozzle print appropriate section and n-th scraper plate.

2. there is multi-jet 3D printer as claimed in claim 1, it is characterised in that：It is described with multi-jet 3D printing Machine also includes a Nozzle Parameter presetting module, and the Nozzle Parameter presetting module is used to preset respectively the printing of N number of nozzle Parameter, print parameters include the distance between two adjacent nozzles ED.

3. there is multi-jet 3D printer as claimed in claim 2, it is characterised in that：Between described two adjacent nozzles Offset distance ScrapD between ED and described two adjacent scraper plates is equal.

4. there is multi-jet 3D printer as claimed in claim 1, it is characterised in that：The cross section of the scraper plate is rectangular Shape.

5. there is multi-jet 3D printer as claimed in claim 1, it is characterised in that：The cross section of the scraper plate is pros Shape.

6. a kind of Method of printing with multi-jet 3D printer, the 3D printer has N number of nozzle, wherein N >=2, institute Stating the product that 3D printer printed includes a finished product, and N number of scraper plate being arranged on beside the finished product, described with multiinjector The Method of printing of 3D printer comprise the following steps：

A product parameters presetting module is provided, the print parameters for presetting the finished product to be printed, the print parameters Overall printing number of plies LayerCnt including the finished product, and each layer finished product maximum coordinates ObjectMax with most sit for a while Mark ObjectMin；

There is provided one and scrape board parameter presetting module, the print parameters for presetting N number of scraper plate respectively, including printing one cuts Face is the trajectory parameters of rectangle, and the ScrapL long and width ScrapW of a circle of each scraper plate outermost are inclined between ectonexine Put coefficientAndSpan beOffset distance ScrapD between two adjacent scraper plates, n-th scraper plate phase For the offset distance ObjectScrapD of the printout, and each layer of each scraper plate of number of turns n；

One scraper plate printing number of plies setup module of offer, the printing number of plies for setting scraper plate, the printing number of plies of the scraper plate is under Formula is stated to obtain：

LoopCnt=max { LayerCnt, 10 }

Wherein, LoopCnt is the printing number of plies of scraper plate；

LayerCnt is the overall printing number of plies of printed finished product；

One scraper plate coordinate calculation module, the printing coordinate for calculating n-th scraper plate, the printing of the n-th scraper plate are provided The printing coordinate of starting point coordinate and the (n-1)th circle is calculated by following formula：

$\left\{\begin{array}{c}{\mathrm{ScrapStart}}_{X\·x}={\mathrm{ObjectMin}}_X+(N-1)\×(ScrapL+ScrapD)\\ {\mathrm{ScrapStart}}_{N\·y}={\mathrm{ObjectMax}}_y+ObjectScrapD+ScrapW\end{array}\right.$

$\left\{\begin{array}{c}{\mathrm{ScrapStart}}_{N\·x\·(n-1)}=\∂{\mathrm{ScrapStart}}_{N\·X}\\ {\mathrm{ScrapStart}}_{N\·y\·(n-1)}=\∂{\mathrm{ScrapStart}}_{N\·y}\end{array}\right.$

Wherein：ScrapStart_N·xIt is the X-coordinate value of the outermost printing starting point of n-th scraper plate；

ScrapStart_N·yIt is the Y-coordinate value of the outermost printing starting point of n-th scraper plate；

ObjectMin_XIt is the X-coordinate value of the min coordinates of finished product for being printed；

ObjectMax_yIt is the Y-coordinate value of the maximum coordinates of finished product for being printed；

ScrapStart_N·x·(n-1)It is the X-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapStart_N·y·(n-1)It is the Y-coordinate value of the (n-1)th circle of n-th scraper plate；

ScrapL is the maximum length of n-th scraper plate；

ScrapD is the lowest distance value between the adjacent scraper plate of any two；

ObjectScrapD is by the minimum range between n-th scraper plate and the finished product for printing；

ScrapW is the Breadth Maximum of n-th scraper plate；

A Nozzle Parameter assignment module is provided, for by the print parameters of the print parameters of the finished product and n-th scraper plate N-th nozzle is assigned to so that the finished product and n-th scraper plate of the n-th nozzle print appropriate section.

7. there is the Method of printing of multi-jet 3D printer as claimed in claim 6, it is characterised in that：One is provided in step Before individual Nozzle Parameter assignment module, also a Nozzle Parameter presetting module, the Nozzle Parameter presetting module are provided including step Print parameters for presetting N number of nozzle respectively, print parameters include the distance between two adjacent nozzles ED.

8. there is the Method of printing of multi-jet 3D printer as claimed in claim 7, it is characterised in that：It is described two adjacent Offset distance ScrapD between the distance between nozzle ED and described two adjacent scraper plates is equal.

9. there is the Method of printing of multi-jet 3D printer as claimed in claim 6, it is characterised in that：The horizontal stroke of the scraper plate Section is rectangle.

10. there is the Method of printing of multi-jet 3D printer as claimed in claim 6, it is characterised in that：The scraper plate Cross section is square.