TW201912381A - 3D printing method using strengthened auxiliary wall - Google Patents

Abstract

A 3D printing method for using strengthened auxiliary wall is disclosed. The method controls a 3D printer to execute following steps of: retrieving multiple layers of object print data of a 3D object, multiple layers of wall print data and multiple layers of raft print data; printing multiple layers of raft physical models on a printing platform layer by layer according to the raft print data, and printing multiple layers of wall physical models on the printed raft physical models layer by layer according to the wall print data; and, printing multiple layers of 3D physical models layer by layer according to the object print data during print of the raft physical models and the wall physical models.

Description

3D printing method using enhanced auxiliary wall

The present invention relates to a 3D printing method, and more particularly to a 3D printing method using a reinforced auxiliary wall.

The FDM (Fused Deposition Modeling) 3D printer is capable of reading the printed data input by the user and stacking and printing the corresponding 3D solid model by extruding the printed material on the printing platform.

In particular, FDM 3D printers use thermoplastic printing materials. For printing, the FDM 3D printer heats the forming nozzle, and extrudes the molten printed material onto the printing platform by the forming nozzle to form the printing layers of the 3D solid model from the printing material. .

The existing FDM 3D printer has the following problems. During the molding nozzle waiting for printing (during printing with other nozzles), the molten printed material will flow out of the forming nozzle. Due to the loss of some of the printed materials, the FDM 3D printer will fail to print due to discontinuous feeding when it continues to print next time.

In order to solve the above problems, a 3D printing method using an auxiliary wall has been proposed. The existing 3D printing method using the auxiliary wall is to control the forming nozzle to print a layer of auxiliary wall to ensure that the forming nozzle is feeding, when the forming nozzle is waiting for the end to be printed (for example, when other nozzles are printed). In a continuous state, the molding nozzle is then controlled to print a 3D solid model. By causing the feeding discontinuity to occur during the printing of the auxiliary wall, the existing 3D printing method using the auxiliary wall can effectively avoid the failure of the 3D solid model printing due to the discontinuity of the feeding.

However, in order to prevent the auxiliary wall from occupying too much space for printing the platform, the existing auxiliary wall is usually set to an elongated structure and is not stable. Moreover, since the phenomenon of discontinuous feeding occurs during the printing of the auxiliary wall, the structure of the auxiliary wall is not complete, and the risk of collapse of the auxiliary wall is further increased. Therefore, the existing 3D printing method using the auxiliary wall may cause the 3D solid model to print due to the collapse of the auxiliary wall during the printing process.

The present invention provides a 3D printing method using a reinforced auxiliary wall that can strengthen the structure of the auxiliary wall to avoid collapse of the auxiliary wall.

In one embodiment, a 3D printing method using a reinforced auxiliary wall is applied to a 3D printer having a printing platform and a molding head, comprising: a) multi-layer object printing data for obtaining a 3D object, and a multi-layer wall Print data and multi-layer base printing materials; b) control the molding nozzle to print the base solid model on the printing platform according to the base printing data; c) control the printing according to the wall after the solid model of the base is printed The forming nozzle prints the wall solid model layer by layer on the solid model of the base; and, d) prints the 3D solid model layer by layer according to the printing data of the object during the printing of the solid model of the base and the solid model of the wall.

The invention adds the base structure to the auxiliary wall, which can effectively avoid the collapse of the auxiliary wall and cause the 3D solid model to print failure.

The technical solutions of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments, which are intended to further understand the scope of the invention.

Please refer to FIG. 1 and FIG. 2 simultaneously. FIG. 1 is a structural diagram of a 3D printing system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the appearance of a 3D printer according to an embodiment of the present invention. The invention discloses a 3D printing method (hereinafter referred to as a printing method) using a reinforcing auxiliary wall, which is applied to a 3D printing system 1. The 3D printing system 1 includes a 3D printing machine 3 and a layering software 20.

In one embodiment, the slice software 20 is stored in a memory (not shown) of the electronic device 2 (such as a notebook computer, a tablet computer, a personal computer, or a cloud server). The aforementioned memory may be a non-transitory computer readable recording medium. The layering software 20 records a computer executable code. After the processor (not shown) of the electronic device 2 executes the layering software 20, the steps of the layering process of the printing method of each embodiment of the present invention can be performed.

The 3D printer 3 mainly includes a memory module 301, a molding nozzle 303, a human interface 305, a connection module 306, a printing platform 307, and a control module 300 electrically connected to the device.

The molding nozzle 303 is connected to the consumable supply device 310 for storing the printing material, and can be printed in 3D using the printing material.

In one embodiment, the 3D printer 1 is a Fused Deposition Modeling (FDM) 3D printer, and the consumable supply device 310 can provide thermoplastic consumables (such as acrylonitrile-butadiene-styrene copolymer (ABS). Or polylactic acid (PLA) to the forming nozzle 303, the forming nozzle 303 can heat the consumable to a semi-molten state for 3D printing.

The memory module 301 is used to store data. The connection module 306 (such as a USB module, a PCI bus module, a Wi-Fi module or a Bluetooth module) is used to connect the electronic device 2 and receive data from the electronic device 2 (such as the object printing data and the base column described later) Printed materials and printed materials on the wall). The human interface 306 (such as a button, display, indicator light, buzzer, or any combination of the above) is used to accept user operations and output print related information. The control module 300 is used to control the operation of each device of the 3D printer 3.

In one embodiment, the memory module 301 is a non-transitory computer readable recording medium and stores a print software 302. The print software 302 records a computer executable code. After the control module 300 executes the printing software 302, the steps of the printing process of the printing method of each embodiment of the present invention can be performed.

In one embodiment, the 3D printer 3 has a color printing function. Specifically, the 3D printer 3 further includes a coloring nozzle 304 electrically connected to the control module 300. The coloring nozzle 304 is connected to the ink cartridge 311 storing the ink and used to color the printed 3D solid model. In an embodiment, the coloring nozzle 102 may include a plurality of sub-heads, each of which is connected to a plurality of inks of different colors such as Cyan, Magenta, Yellow, and Black (blacK).匣 311, and full color printing can be realized by color mixing.

In one embodiment, the 3D printer 3 includes a moving mechanism 308 that is electrically coupled to the control module 300. The moving mechanism 308 is used to connect and control the molding nozzle 303 and the coloring nozzle 304 to move in one or more axial directions (such as X-Y-Z triaxial) for printing.

In one embodiment, the moving mechanism 308 is not connected to the molding nozzle 303 and the coloring nozzle 304, but is disposed on the printing platform 307. Specifically, the moving mechanism 308 can control the printing platform 307 to move between one or more axial directions (eg, X-Y-Z triaxial) for the molding nozzle 303 and the coloring nozzle 304 to print without moving.

3 is a flow chart of a printing method according to a first embodiment of the present invention. The 3D printing method using the reinforcing auxiliary wall (hereinafter referred to as the printing method) of the embodiments of the present invention is mainly realized by the printing system 1 shown in FIGS. 1 and 2. The printing method of this embodiment includes the following steps.

Step S100: The control module 300 of the 3D printer 3 obtains the print data (the print data may include the object print data corresponding to the 3D object, the wall print data of the corresponding wall object, and the base print data of the corresponding base object) . Each of the print data includes a plurality of data segments corresponding to the plurality of layers, and each of the data segments can correspond to a path, and when the molding nozzle prints along the path, a corresponding 3D solid model, a wall solid model or a base can be manufactured. Solid model.

Step S102: The control module 300 sequentially selects one of the multiple layers (such as the first layer) of each printed material. In one embodiment, the control module sequentially selects one of a plurality of layer values (eg, a layer value of 1).

Step S104: The control module 300 determines whether the base physical model has been printed, that is, whether the print data of all the layers of the base has been selected and printed.

If the control module 300 determines that the base physical model has been printed, step S106 is performed. Otherwise, the control module 300 performs step S108.

Step S106: After the base physical model printing is completed, the control module 300 controls the forming nozzle 303 to print a layer of the wall solid model according to the selected (ie, the same layer value) one layer of the wall printing data. Specifically, the present invention adds a base solid model to the wall solid model (ie, the auxiliary wall) to increase the contact area of the auxiliary wall with the print platform 307, and to enhance the stability of the auxiliary wall. Then step S110 is performed.

If the control module 300 determines in step S104 that the base physical model is not printed, step S108 is executed: the control module 300 controls the molding nozzle 303 to print a layer according to the selected (ie, the same layer value) layer print data. Base solid model. Then step S110 is performed.

Step S110: The control module 300 prints a layer of 3D solid model according to the selected (ie, the same layer value) one layer of the object printing data.

In one embodiment, the print position of the base of the wall solid model is separated from the print position of the 3D solid model and its base (if any) (as shown in Figure 7). Specifically, the control module 300 controls the molding nozzle 303 to print a layer of the wall solid model (or the base solid model), and then prints the same layer of the 3D solid model or its base at another position of the printing platform 307. Alternatively, the control module 300 can also control the molding nozzle 303 to first print a layer of the 3D solid model or its base, and then print (or simultaneously print) the same layer of the wall solid model at another position of the printing platform 307 (or Base solid model).

In another embodiment, the 3D solid model is shared with the wall solid model (as shown in Figure 10). Specifically, after the control module 300 controls the molding nozzle 303 to print the base solid model of all layers, the wall solid model and the 3D solid model are printed layer by layer on the printed base solid model. In other words, in the embodiment, the control module 300 continues to perform step S112 after performing step S108.

In one embodiment, the present invention also provides a scraping function. Specifically, the control module 300 can continuously determine the predetermined scraping condition during the printing of the 3D solid model (eg, performing a scraping action every 20 seconds, and printing the 3D solid model in each area of the single layer). After performing a scraping action, or performing a scraping action after each layer of 3D solid model printing is completed, it is consistent, and the forming nozzle 303 is controlled to be scraped on the printed wall solid model when the scraping conditions are met. The action is to scrape off the residue on the forming nozzle 303. Thereby, the invention can effectively prevent the residual material on the forming nozzle 303 from sticking to the 3D solid model and reduce the printing quality.

It is worth mentioning that, since the present invention is to simultaneously print the wall solid model and the 3D solid model layer by layer, the wall solid model and the 3D solid model have the same layer height in the printing process, which can effectively shorten the molding nozzle 303 execution. The moving distance and moving time of the scraping action. Moreover, since the height difference between the wall solid model and the 3D solid model (ie, the Z-axis distance) need not be considered, the invention can effectively improve the accuracy of the scraping action, and can avoid the incomplete printing of the scraping motion and lead to the printing quality. Declining, or the forming nozzle 303 excessively collides with the wall solid model during scraping, causing the wall solid model to collapse.

Step S112: The control module 300 determines whether the printing is completed, that is, whether each printed material of all layers has been selected and printed. In one embodiment, the control module determines if all layer values have been selected.

If the control module 300 determines that the printing is completed (that is, all the printed materials of the layer have been selected and printed), the printing is ended. Otherwise, the control module 300 performs step S102 to step S110 again to select another layer of printed material (such as the second layer or layer value 2) and prints another layer of the physical model.

The invention adds the base structure to the auxiliary wall, which can effectively improve the stability of the auxiliary wall, and can effectively avoid the failure of the 3D solid model printing due to the collapse of the auxiliary wall.

Continuing to refer to FIG. 7 to FIG. 9B, FIG. 7 is a schematic diagram of a physical model according to an embodiment of the present invention, FIG. 8A is a first schematic diagram of a printing process according to an embodiment of the present invention, and FIG. 8B is a column according to an embodiment of the present invention. A second schematic view of the printing process, FIG. 9A is a first schematic view of a scraping operation according to an embodiment of the present invention, and FIG. 9B is a second schematic view of a scraping operation according to an embodiment of the present invention. 7 through 8B are used to exemplify how the present invention strengthens the auxiliary wall. Figures 9A through 9B are used to illustrate how the present invention performs a scraping action.

In this example, the print position of the base 40 of the auxiliary wall 42 (ie, the solid model of the wall of all layers) is separated from the print position of the 3D solid model 5 (as shown in FIG. 7). ). Moreover, this example only prints a layer of the base solid model 400 as the base 40.

In the printing process, as shown in FIG. 8A, the molding nozzle 303 prints the first layer of the base solid model 400 (the layer value is 1) on the printing platform, and prints the same layer of the 3D solid model 50 (layer value) Is 1). After the base solid model printing is completed, as shown in FIG. 8B, the molding nozzle 303 then prints a layer of the wall solid model 420 (the layer value is 2) on the base solid model 400, and prints the same layer of the 3D solid model 51 ( The layer value is 2). Finally, the entire set of 3D solid models 5 as shown in FIG. 7 can be manufactured by continuously repeating the printing steps of FIG. 8B to stack the multi-layered 3D solid models.

Next, how to perform the scraping action will be explained. During the waiting for printing (such as during the movement of the forming nozzle 303), the molten printed material may flow out of the forming nozzle 303 (hereinafter referred to as the residual material), in order to avoid the residual material sticking to the 3D solid model 5, the forming nozzle 303 needs to be periodically or The scraping action is performed irregularly. In the present example, the forming head 303 performs a scraping action after printing in a single area in a single layer.

In the printing process, as shown in FIG. 9A, the molding head 303 first prints a layer of the wall solid model 421 (the layer value is 3), and prints a 3D solid model 52 of a region of the same layer (the layer value is 3). Next, as shown in FIG. 9B, the forming nozzle 303 performs a scraping action on the wall solid model 421 to scrape the residual material 4210 onto the wall solid model 421, and continues to print the 3D solid model 53 of another region of the same layer (layer The value is 3). Thereby, the invention can effectively prevent the residual material 4210 from sticking to the 3D solid model 53 and can effectively improve the printing quality.

4 is a flow chart of a printing method according to a second embodiment of the present invention. In this embodiment, the 3D solid model is shared with the wall solid model (as shown in FIG. 10), and the space of the printing platform 307 occupied by the base can be effectively saved, and the 3D printer 3 has more The space of the printing platform 307 can print a larger 3D solid model.

Moreover, this embodiment further proposes a color printing function. Specifically, after the 3D printer 3 controls the molding nozzle 303 to print the 3D solid model of each layer, the coloring nozzle 304 is controlled to print the layered 3D solid model. It is worth mentioning that the color printing function can also be applied to other embodiments (such as the first embodiment described in FIG. 3). The printing method of this embodiment includes the following steps.

Step S200: The control module 300 obtains multi-layer object printing data corresponding to geometric information of the 3D object, multi-layer wall printing data corresponding to the wall object, multi-layer base printing data corresponding to the base object, and color information of the corresponding 3D object. Multi-layer color printing of materials (such as multiple color 2D images). The printed data of each layer can correspond to one layer value respectively.

Step S202: The control module 300 sequentially selects one of the multiple layers of each printed material (such as the first layer or the layer value 1).

Step S204: The control module 300 determines whether the base physical model has been printed, that is, whether the print data of all the layers of the base has been selected and printed.

If the control module 300 determines that the base physical model has been printed, step S206 is performed. Otherwise, the execution control module 300 performs step S214.

Step S206: The control module 300 controls the forming nozzle 303 to print a layer of the wall entity model according to the selected one layer of the wall printing data.

Step S208: The control module 300 prints a layer of a 3D solid model according to the selected one-layer object printing data.

It is worth mentioning that there is no order relationship between step S206 and step S208. In another embodiment, the control module 300 may perform step S208 and then perform step S206, or perform step S206 and step S208 simultaneously.

Step S210: The control module 300 determines whether the printed 3D solid model has to be printed according to the color printing data of the same layer. In an embodiment, the control module 300 determines whether the color printing data of the same layer includes color information, and determines that coloring is required when determining that the color information is included.

If the control module 300 determines that the layer 3D solid model that has been printed needs to be colored, step S212 is performed. Otherwise, the control module 300 performs step S216.

Step S212: The control module 300 controls the coloring nozzle 301 to color the printed 3D solid model according to the color printing data of the same layer.

If the control module 300 determines in step S204 that the base physical model is not printed, step S214 is executed: the control module 300 controls the molding nozzle 303 to print a layer of the base solid model according to the selected base printing data. Then step S216 is performed.

Step S216: The control module 300 determines whether the printing is completed, that is, whether the printing material of the next layer needs to be printed.

If the control module 300 determines that the printing is completed, the printing is ended. Otherwise, the control module 300 performs step S200 to step S214 again to select and print another layer of printed material (such as the second layer or layer value 2), and performs the physical model of the printed object when determining that the color is to be colored. Coloring.

By sharing the base with the auxiliary wall and the 3D solid model, the invention can effectively reduce the use space of the printing platform 307 occupied by the base, and can effectively print a larger 3D solid model. Moreover, the present invention can also efficiently manufacture a colored 3D solid model.

Continuing to refer to FIG. 10 to FIG. 11D, FIG. 10 is a schematic diagram of a physical model according to an embodiment of the present invention, FIG. 11A is a first schematic diagram of a printing process according to an embodiment of the present invention, and FIG. 11B is a column according to an embodiment of the present invention. The second schematic diagram of the printing process, FIG. 11C is a third schematic diagram of the printing process according to an embodiment of the present invention, and FIG. 11D is a fourth schematic diagram of the printing process according to an embodiment of the present invention. Figures 10 through 11D are used to illustrate how the present invention uses an auxiliary wall to enhance print quality and color print.

In the present example, the 3D solid model 7 shares the base 6 with the auxiliary wall 8 (as shown in FIG. 10). Also, this example prints a base solid model 60 as the base 6.

In the printing process, as shown in FIG. 11A, the molding head 303 prints the base solid model 60 of the first layer (the layer value is 1) on the printing platform. After the base solid model 60 is printed, as shown in FIG. 11B, the molding nozzle 303 then prints a layer of the wall solid model 80 (the layer value is 2) on the base solid model 60, and prints the same layer of the 3D solid model 70. (The layer value is 2). After the 3D solid model 70 is printed, as shown in FIG. 11C, the coloring nozzle 304 prints a color coating on the 3D solid model 70 to produce a color 3D solid model 70'. Finally, the entire set of color 3D solid models 7 as shown in FIG. 10 can be manufactured by continuously repeating the printing steps of FIGS. 11B and 11C to stack the multi-layered 3D solid models and coloring them.

It is worth mentioning that, in the step of FIG. 11C, when waiting for the coloring nozzle 304 to print, the molten printed material (removed material 810 as shown) may flow out from the forming nozzle 303, in order to avoid residual materials. 810 adheres to the 3D solid model 7 and causes subsequent feed discontinuities. Before starting to print the next 3D solid model 71, as shown in FIG. 11D, the forming nozzle 303 first uses the residual material 810 to print the wall solid model 81 to ensure The material is continuously continuous (even if the supply discontinuity occurs during the printing of the wall solid model 81, the wall solid model 81 shown in Fig. 11D has a print 瑕疵) and the scraping action is performed, and the 3D solid model 71 is printed. Thereby, the invention can effectively avoid the situation that the discontinuity of the feeding occurs in the color 3D solid model 7, and the printing quality can be improved.

It is worth mentioning that the auxiliary wall 8 may collapse due to the discontinuity of the feeding during the printing, and the invention can effectively prevent the auxiliary wall 8 from collapsing by adding the base 6 to the auxiliary wall 8, thereby improving the printing success rate. .

Continuing to refer to FIG. 3 to FIG. 5 simultaneously, FIG. 5 is a partial flow chart of a printing method according to a third embodiment of the present invention. The printing method of this embodiment further includes a layering process, and the layering process can generate printing data, and the printing data is used by the control module 300 to execute the printing method shown in FIG. 3 or 4. The printing method of the present invention includes the following steps.

Step S300: The electronic device 2 reads the 3D object data corresponding to a group of 3D objects after executing the layering software 20.

Step S302: The electronic device 2 determines whether the auxiliary wall function is turned on (if the user selects to add an auxiliary wall when performing the layering process).

If the electronic device 2 determines that the auxiliary wall function is turned on, step S304 is performed. Otherwise, the electronic device 2 performs step S306.

Step S304: The electronic device 2 obtains the wall print data corresponding to a group of wall objects. In one embodiment, the wall print data is a plurality of layers of data segments (such as path data of the layers of the molding nozzle 303) obtained by performing a layering process on the geometric information of the wall object in advance.

Step S306: The electronic device 2 determines whether the base adding function is enabled (if the user selects to add the base when performing the layering process).

In an embodiment, when the user sets the on/off base add function, the user may further select (or preset the system) to add a base to the 3D object, select a base for the wall object, or add a base to the two.

In an embodiment, in the case where a base is added to the 3D object and the wall object, the user may select (or preset) the separation or sharing of the 3D object and the base of the auxiliary wall.

If the electronic device 2 determines that the base adding function is turned on, step S308 is performed. Otherwise, the electronic device 2 performs step S310.

Step S308: The electronic device 2 obtains the printed data of the base corresponding to the set of base objects. In one embodiment, the base print data is a plurality of layers of data segments (such as path data of the layers of the molding nozzle 303) obtained by performing a layering process on the geometric information of the base object in advance.

In an embodiment, when the base of the 3D object and the wall object is separated, the electronic device 2 calculates the corresponding base object according to the size of the wall object and the preset outward spread distance (the first expanded distance, such as 1 cm). And produce the corresponding base print data. Thereby, the present invention can produce a base print material for the base of the auxiliary wall.

Moreover, when the 3D object is set to add the base, the electronic device 2 can also generate the multi-layer object base printing data according to the size of the 3D object and another outward expansion distance (the second outward expansion distance, such as 0.5 cm).

In an embodiment, when the 3D object and the base of the wall object are shared, the electronic device 2 can generate a base print data, and the base print data corresponds to a base object sufficient to carry the 3D object and the wall object.

Step S310: The electronic device 2 performs a layering process according to the geometric information of the loaded 3D object data to generate an object print data value of the plurality of layers.

In an embodiment, when the base of the 3D object and the wall object is separated and the 3D object is set to add the base, the electronic device 2 can add the information printed on the object base to the printed material of the generated object as a new object. Print data (new object print data is a 3D object corresponding to the base object added).

Step S312: The electronic device 2 prints data based on the layer value link wall, the base print data, and the object print data. Specifically, the electronic device 2 connects a plurality of paths having the same number of layers of each printed material into a single path. When the forming nozzle prints according to the connected path, the corresponding wall solid model, the base solid model and the object solid model can be printed.

In an embodiment, when the base of the 3D object and the wall object is separated, the electronic device 2 merges the base print data and the wall print data (ie, the base object is stacked on the wall object as a single object), and the merged The base print data and the wall print data of the subsequent layers are linked to the same layer of the object print data.

In an embodiment, when the 3D object and the base of the wall object are shared, the electronic device 2 sets the multi-layer base print data to the lowest layer, and sets the wall print data and the object print data to be stacked on the base to print the data. On, and print the wall print data of each layer to the same layer of the object print data.

Step S314: The electronic device 2 determines whether the color printing function is turned on.

If the electronic device 2 determines that the color printing function is turned on, step S316 is performed. Otherwise, the electronic device 2 ends the layering process.

Step S316: The electronic device 2 generates multi-layer color printing materials (such as color 2D images) according to the color information of the 3D object data.

Thereby, the invention can effectively produce the printing materials, and the 3D printer 3 can realize the color printing function and the auxiliary wall base adding function.

4 to FIG. 6 and FIG. 12, FIG. 6 is a partial flow chart of a printing method according to a fourth embodiment of the present invention, and FIG. 12 is a schematic view showing the size of a base object according to an embodiment of the present invention. In this example, the 3D object and the wall object share the base. The embodiment further provides a base size calculation function, which can calculate the size of the base when the 3D object and the wall object share the base. Compared with the embodiment shown in FIG. 5, step S308 of the present embodiment includes the following steps.

Step S40: The electronic device 2 obtains the size of the 3D object 90 by analyzing the 3D object data, and calculates the range of the bounding box 92 (the second bounding box) of the 3D object 90 according to the size of the 3D object 90.

Step S42: The electronic device 2 calculates the 3D object 90 and the wall object 91 according to the bounding frame 92 of the 3D object 90, the preset vertical spacing g1 (such as 2 cm), and the preset horizontal spacing g2 (such as 3 cm) (in this example) In the middle, the wall object 91 is in the range of the enclosure frame 93 (first enclosure frame) of the L-shape.

In an embodiment, the vertical spacing g1 and the horizontal spacing g2 may be the same or different and are not limited.

Step S44: The electronic device 2 sets the size of the base object according to the enclosure frame 93 and the preset extension distance.

In an embodiment, the flared distance includes a vertical outward spread distance g3 and a horizontal outward spread distance g4. The electronic device 2 vertically expands the aforementioned vertical expansion distance g3 by the enclosure frame 93, and horizontally expands the horizontal expansion distance g4 to obtain a new enclosure frame 94 (third enclosure frame), and sets the range of the enclosure frame 94 to the base. The size of the object.

Step S46: The electronic device 2 generates corresponding base print data according to the size of the set base object.

Thereby, the invention can effectively calculate the required size of the base when the 3D object and the wall object share the base.

There are a variety of other embodiments of the present invention, and various changes and modifications can be made in accordance with the present invention without departing from the spirit and scope of the invention. The modifications are intended to fall within the scope of the claims of the present invention.

3D printing method using enhanced auxiliary wall

2‧‧‧Electronic devices

2‧‧‧Electronic devices

3‧‧‧3D printer

300‧‧‧Control Module

301‧‧‧Memory Module

302‧‧‧Printing software

303‧‧‧Forming nozzle

304‧‧‧Color nozzle

305‧‧‧Human Machine Interface

306‧‧‧Connecting module

307‧‧‧Printing platform

308‧‧‧Mobile agencies

310‧‧‧Supply supply device

311‧‧‧Ink

40, 6‧‧‧ base

400, 60‧‧‧Base solid model

42, 8‧‧‧Auxiliary Wall

420-421, 80-81‧‧‧ wall solid model

4210‧‧‧Residue

5, 50-53, 7, 70-71, 70'‧‧3D solid model

90‧‧‧3D objects

91‧‧‧Wall objects

92-94‧‧‧ bounding box

G1‧‧‧ vertical spacing

G2‧‧‧ horizontal spacing

G3‧‧‧Vertical expansion distance

G4‧‧‧ horizontal expansion distance

S100-S112‧‧‧First printing step

S200-S216‧‧‧Second printing step

S300-S316‧‧‧Cutting step

S40-S46‧‧‧Base print data generation steps

1 is a block diagram of a 3D printing system in accordance with an embodiment of the present invention.

2 is a schematic diagram of the appearance of a 3D printer according to an embodiment of the invention.

3 is a flow chart of a printing method according to a first embodiment of the present invention.

4 is a flow chart of a printing method according to a second embodiment of the present invention.

Figure 5 is a partial flow chart of a printing method in accordance with a third embodiment of the present invention.

Figure 6 is a partial flow chart of a printing method in accordance with a fourth embodiment of the present invention.

FIG. 7 is a schematic diagram of a physical model according to an embodiment of the present invention.

FIG. 8A is a first schematic diagram of a printing process according to an embodiment of the invention.

FIG. 8B is a second schematic diagram of a printing process according to an embodiment of the present invention.

9A is a first schematic view of a scraping operation in accordance with an embodiment of the present invention.

9B is a second schematic view of a scraping operation in accordance with an embodiment of the present invention.

FIG. 10 is a schematic diagram of a solid model according to an embodiment of the present invention.

FIG. 11A is a first schematic diagram of a printing process according to an embodiment of the present invention.

FIG. 11B is a second schematic diagram of a printing process according to an embodiment of the present invention.

FIG. 11C is a third schematic diagram of a printing process according to an embodiment of the present invention.

FIG. 11D is a fourth schematic diagram of a printing process according to an embodiment of the present invention.

Figure 12 is a schematic view showing the dimensions of a base object according to an embodiment of the present invention.

Claims (13)

A 3D printing method using a reinforced auxiliary wall is applied to a 3D printer having a printing platform and a molding nozzle, comprising: a) multi-layer object printing data for obtaining a 3D object, and multi-layer wall printing data And printing the data on the multi-layer base; b) controlling the molding nozzle to print a base solid model on the printing platform according to the printing data of the base; c) according to the wall column after the solid model printing is completed Printing data control the molding nozzle to print a solid body model layer by layer on the solid model of the base; and d) controlling the molding nozzle layer by layer according to the printing data of the object during printing of the solid model of the base and the solid model of the wall Print a 3D solid model. The 3D printing method using the reinforcement auxiliary wall according to claim 1, wherein the step d) comprises a step d1), when a scraping condition is met, controlling the forming nozzle to be performed on the printed solid model of the wall. The scraping action acts to scrape the residue on the forming nozzle. The 3D printing method using the reinforcement auxiliary wall according to claim 1, wherein the step a) further comprises the following steps: e1) obtaining 3D object data of the 3D object; e2) obtaining the wall column of the wall object Printing data; e3) obtaining the base print data of a base object; e4) generating the object print data according to the geometric information of the 3D object data; and e5) linking the wall print data based on the layer value, and printing the base Information and the information printed on the object. The 3D printing method using the reinforcement auxiliary wall according to claim 3, wherein the 3D printer is a fused deposition molded 3D printer, and the step b), the step c) and the step d) are controlling the molding. After the nozzle solid body model of the same layer value, the wall solid model and the 3D solid model are printed, the base solid model, the wall solid model and the 3D solid model of the next layer are printed. The 3D printing method using the reinforcement auxiliary wall according to claim 3, wherein the 3D printer has a coloring nozzle, and the 3D printing method using the reinforcement auxiliary wall further comprises the following steps: f1) obtaining multi-layer color Printing the data; and f2) After the printing of the 3D solid model is completed in each layer, the coloring prints are controlled according to the color printing data of the same layer to color the 3D solid model of each layer. The 3D printing method using the reinforcement auxiliary wall according to claim 5, further comprising a step e6) before the step a) generating the color printing data according to the color information of the 3D object data. The 3D printing method using the reinforcement auxiliary wall according to claim 3, wherein the step d) is printing the 3D solid model layer by layer at another position on the printing platform. The method for claim 3, wherein the step e3) is to generate the base print data according to the size of the wall object and a first extended distance; the step e5) is to merge the The base prints the data and prints the data on the wall, and links the data of the combined layers to the same layer of the object to print the data. The method of claim 3, wherein the step e4) comprises: e41) generating a multi-layered object base printing material according to the size of the 3D object and a second outward expansion distance; e42) Generating a plurality of pieces of the object print data according to the geometric information of the 3D object data; and e43) adding the object base print data to the object print data. The 3D printing method using the reinforcement auxiliary wall according to claim 3, wherein the step d) is to print the 3D solid model layer by layer on the base solid model after the base solid model printing is completed. The 3D printing method using the reinforcement auxiliary wall according to claim 10, wherein the step e5) sets the base print data to the lowest layer, and links the wall print data of each layer to the object column of the same layer. Printed materials. The method of claim 3, wherein the step e3) comprises: e31) calculating a first bounding box of the 3D object and the wall object; e32) according to the first bounding box and a third outward expansion distance sets the size of the base object; and e33) generates the base print data according to the size of the base object. The 3D printing method using the reinforcement auxiliary wall according to claim 12, wherein the step e31) comprises the following steps: e311) calculating a second bounding box of the 3D object; and e312) according to the second bounding box, The first bounding box is calculated by the horizontal spacing and a vertical spacing.