KR102021417B1 - 3d printer device having radial discharge nozzle - Google Patents

Abstract

The present invention is to arrange and construct a plurality of nozzles in a radial structure in a FDM (Fused Deposition Modeling) type 3D printer, and to control each nozzle to be driven independently to divide one output plane into a plurality of outputs of the output object A 3D printer apparatus having a radial output nozzle capable of significantly improving speed compared to a single nozzle, the apparatus comprising: a circular rail mounted to be spaced apart from an upper surface of a work plate in a circular ring shape; Two or more spinning rails coupled in a radial structure from an inner center of the circular rail and configured to be circumferentially rotated on the circular rail; A slide block coupled to each of the spinning rails so as to slide forward and backward along the spinning rails; A nozzle unit coupled to a bottom surface of the slide block, receiving a filament from the outside, melting the filament, and discharging the filament onto the work plate; And dividing the stacking surface of the output object by a predetermined program by inputting design information of the output object and assigning an allocation area for each nozzle part, and each nozzle part independently derives the filament melt from the assigned allocation area. It characterized in that it comprises a; control unit for controlling the drive of the spinning rail, the slide block.

Description

3D printer device having radial discharge nozzle

The present invention relates to a FDM (Fused Deposition Modeling) type 3D printer which melts and laminates a filament, which is a thermoplastic, in a nozzle, and forms a product. Specifically, a plurality of nozzles are arranged and constructed in a radial structure. The present invention relates to a 3D printer apparatus having a radial ejection nozzle capable of controlling the nozzles to be driven independently and dividing one output plane into a plurality, thereby remarkably improving the output speed of the output object compared to a single nozzle.

Recently, due to the development of printer technology, the use of a 3D printer capable of outputting a three-dimensionally molded object to be printed is gradually increasing.

The 3D printer has been used for applications such as modeling or sample production before mass production, but recently, a technical basis has been established that can be used for molding products that can be mass-produced based on small quantities of multi-products.

The type of 3D printer varies depending on the purpose of use, but the wire or filament made of thermoplastic is supplied through the transfer device, and the wire or filament is adjusted in three X, Y, and Z directions relative to the work table. By fusing and discharging from a heater nozzle mounted on a 3D transfer mechanism, a filament melt-lamination molding method for forming an object in 3D by laminating it on a work table while forming a two-dimensional plane shape is commonly used.

Such a 3D printing method is called FDM (Fused Deposition Modeling) method.

In addition, MJM (Multi Jet Modeling) method that melts the photocurable resin through a nozzle and sprays it like an inkjet printer, and then laminates and molds by curing with UV light, and the principle that the scanned part is cured by scanning a laser beam on the photocurable resin Instead of the SLA (Stereo Lithographic Apparatus) method and the photocurable resin in the SLA method, SLS (Selective Laser Sintering) method using the principle of forming and solidifying using a functional polymer or metal powder is used.

The most commonly used 3D printer method is the FDM method as described above. The FDM method is strong in strength and high in humidity, so it has high durability, and the result is particularly low cost, but the surface is rough. It is not suitable for mass production because it is very slow in other methods, and is currently used mainly for personal and home use that can be used by using open source. Complementing the productivity problem, FDM type 3D printer in various industrial fields as well as personal or home use There is an urgent need for the development of technology to enable the use of.

Republic of Korea Patent No. 10-1346704 (December 31, 2013)

Accordingly, an object of the present invention is to arrange and construct a plurality of nozzles in a radial structure in a FDM (Fused Deposition Modeling) type 3D printer, and to divide each output plane by controlling each nozzle to be driven independently. It is an object of the present invention to provide a 3D printer device having a radial output nozzle capable of significantly improving the output speed of an output object compared to a single nozzle.

3D printer apparatus having a radial discharge nozzle according to a preferred embodiment of the present invention for achieving the above object, the circular rail is mounted to be spaced apart from the upper surface of the work plate; Two or more spinning rails coupled in a radial structure from an inner center of the circular rail and configured to be circumferentially rotated on the circular rail; A slide block coupled to each of the spinning rails so as to slide forward and backward along the spinning rails; A nozzle unit coupled to a bottom of the slide block, receiving a filament from the outside, melting the filament, and discharging the filament onto the work plate; And dividing the stacking surface of the output object by a predetermined program by inputting design information of the output object and assigning an allocation area for each nozzle part, and each nozzle part independently derives the filament melt from the assigned allocation area. It characterized in that it comprises a; control unit for controlling the drive of the spinning rail, the slide block.

As one example, the spinning rail, the open portion along the longitudinal direction and one end toward the inner center of the circular rail is configured with one or more fasteners of the ring shape is formed with one end of the other spinning rail and the fastener Coupled by a rotary pin inserted into the slide block, the slide block is configured to surround the outer surface of the spinning rail, and the upper surface may be configured to expose a communication tube communicating with the filament inlet opening through the opening portion. .

As an example, the nozzle unit includes a discharge nozzle for discharging the molten filament, the discharge nozzle is configured on one end of the heating block toward the inner center of the circular rail, it is configured to have an acute angle in the vertical direction axis It may be configured so that there is no mutual interference with the discharge nozzle of the other nozzle portion adjacent.

As an example, the first gear of the tooth structure configured along the outer circumferential surface or the inner circumferential surface of the circular rail; At least two second gears engaged with the first gears to rotate in rotation; And at least two rotation motors connected to the rotation shafts of the second gears and driven by a control signal of the controller to impart rotational force to the second gears, wherein one side of each rotation motor has the other end of the radiation rail. Is coupled to the spinning rail can be circumferentially rotated on the circular rail by the drive of the rotary motor.

As described above, the 3D printer apparatus including the radial ejection nozzle of the present invention is a FDM (Fused Deposition Modeling) type 3D printer, and arranges and constructs a plurality of nozzles in a radial structure and controls each nozzle to be driven independently. By dividing one output plane into a plurality, not only can the output speed of the output object be significantly improved as compared to a single nozzle, but also two or more output objects can be formed and output at the same time, resulting in an effect of improving productivity.

1A and 1B are perspective views showing the configuration of a 3D printer device having a radial discharge nozzle according to an embodiment of the present invention.
Figure 2 is a perspective view of the main portion showing the configuration of the unit spinning rail according to an embodiment of the present invention.
3 is a perspective view showing the configuration of a unit nozzle unit according to an embodiment of the present invention.
4A to 4C are views illustrating a nozzle unit according to an embodiment of the present invention.
5 is a perspective view showing a fixing structure of a fixing frame according to an embodiment of the present invention.
6 is a perspective view illustrating an example in which the fixing frame of FIG. 5 is configured in plural forms.
7 is a perspective view illustrating a guide frame and a fixing structure of a fixing frame and a spinning rail according to another embodiment of the present invention.

Hereinafter, a 3D printer apparatus having a radial discharge nozzle according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1A and 1B are perspective views illustrating a configuration of a 3D printer apparatus having a radial discharge nozzle according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating main parts of a unit spinning rail according to an embodiment of the present invention. to be. 3 is a perspective view illustrating a unit nozzle unit according to an exemplary embodiment of the present invention, and FIGS. 4A to 4C are diagrams illustrating a nozzle unit according to an exemplary embodiment.

The 3D printer device (hereinafter referred to as a 'printer device 10') having a radial ejection nozzle of the present invention is a FDM (Fused Deposition Modeling) method in which a product is molded while melting and laminating filament, which is a thermoplastic, in a nozzle. In a 3D printer, a plurality of nozzles, rather than a single nozzle, are arranged in a radial manner, and each nozzle can be driven independently, so that the output speed of the output object can be significantly improved.

Here, the filament 20 is a plastic resin that is a material of the output object, and the material or color thereof may be determined in consideration of the appearance of the output object.

Although the filament 20 is not shown in the drawings, it may be intermittently or continuously supplied to the nozzle unit 500 described below in a form wound on a roller as a configuration of the printer apparatus 10, and the nozzle unit It can be melted by 500 and discharged into the melt.

1A to 2, the printer apparatus 10 of the present invention includes a work plate 100, a circular rail 200, a spinning rail 300, a slide block 400, a nozzle unit 500, and a controller. It is configured to include.

The work plate 100 functions as a work table that provides a space in which the output object is molded.

The circular rail 200 is mounted to be spaced apart from the upper surface of the work plate 100 in a circular ring shape.

Meanwhile, in the process of forming the output object, as the filament melt is sequentially stacked on the upper surface of the work plate 100, the height of the output object gradually increases, and the work plate 100 is raised from the circular rail 200 by the raised height. The working space can be secured only after being separated.

That is, the work plate 100 and the circular rail 200 are spaced apart from each other because the distance between the work plate 100 and the circular rail 200 should be relatively increased as the height increases in the process of forming the output object. It is desirable to be configured to allow adjustment of the distance.

At this time, the adjusting means for adjusting the separation distance may be provided with the work plate 100 or the circular rail 200 or the work plate 100 and the circular rail 200 as described above, as well as the lifting structure is also known. Since a variety of techniques can be implemented, detailed descriptions thereof will be omitted.

In addition, in the present invention, any one of the work plate 100 or the circular rail 200 may be configured to be liftable, but in the present invention, a structure in which the work plate 100 is elevated will be described as an example.

The spinning rail 300 is radially coupled from the inner center of the circular rail 200 is configured to enable the circumferential rotation on the circular rail (200).

The spinning rail 300 guides the linear movement of the slide block 400 described below.

At least two of the radiation rails 300 may be provided in a radial structure.

In the present embodiment, as shown in Figure 1a, etc., six spinning rails 300 are formed symmetrically, but the present invention is not limited to the number of the spinning rails 300, and each of the spinning rails 300 An appropriate number may be selected and arranged in consideration of the driving range or the number of plane divisions allocated by the controller described below.

In addition, the slide block 400 and the nozzle unit 500 coupled to the spinning rail 300 corresponding to the number of the spinning rail 300, of course, there is a variation in the number thereof.

The slide block 400 is coupled to slide in the x-axis and y-axis directions in a front / rear straight direction, that is, a universal 3D printer device along the longitudinal direction of the spinning rail 300.

Here, the slide block 400 is not shown in the drawing, but a driving source such as a driving motor may be mounted so that the linear movement on the spinning rail 300 may be implemented, and the driving source may be a control signal of a controller described below. Can be driven selectively.

The circumferential rotational drive of each spinning rail 300 and the linear sliding drive of each slide block 400 may be independently performed as shown in FIG. 1B.

On the other hand, the nozzle unit 500 is coupled to the bottom surface of the slide block 400 to face the work plate 100, the sliding interlocking with the slide block 400, and supplies the filament 20 of the solid state from the outside Take it and melt it to be discharged to the upper surface of the work plate (100).

For example, the nozzle unit 500 has a filament inlet 510 into which the filament 20 supplied from the outside is inserted, and an inner space communicating with the filament inlet 510, as shown in FIG. 3. The filament melt is melted in the inner space of the heating block 520 and the heating block 520 for melting the filament 20 in the solid state introduced by heating to a predetermined melting temperature and the work plate ( 100) may be configured to include a discharge nozzle 530 for discharging to the upper surface.

Here, the discharge nozzle 530 is configured at one end of the heating block 520 toward the inner center of the circular rail 200, as shown in Figure 4a and 4b, the installation angle (b) to the vertical direction axis It is configured to have an acute angle, and it is preferable that one side facing the other discharge nozzle 530 facing each other is configured as a vertical plane.

This prevents interference with other discharge nozzles 530 facing each other when two or more nozzle parts 500 are distributed in the central portion of the work plate 100, and each nozzle part 500 as shown in FIG. 4C. This is to ensure that the discharge area (a) that is in charge of) can be performed without a blind spot, that is, an area that does not output, to the edge portion of the work plate 100 as well as the center portion.

Although the nozzle unit 500 is illustrated as having one filament inlet 510 formed in FIG. 3, the present invention is not limited thereto, and at least two or more filaments 20 having different colors may be selectively introduced into the nozzle unit 500. Of course.

The controller receives design information, for example, modeled 3D data about an output object, and outputs a control signal through a process of a predetermined program.

For example, the controller calculates a plurality of stacked surfaces corresponding to the shape of the output object based on the input 3D data, but divides each stacked surface into a plurality of regions while selecting one nozzle unit for each divided region. After allocating the divided regions for each nozzle so as to be in charge of the 500, the control unit outputs a control signal so that the selected nozzle units 500 simultaneously discharge the filament melt in the allocated divided regions.

The controller transmits the output control signals to the components of the work plate 100, the circular rail 200, the radiation rail 300, the slide block 400, the nozzle unit 500, and the like. By controlling this, a series of molding and output processes for the output object can be performed.

On the other hand, the printer device 10 according to an embodiment of the present invention is configured such that the spinning rail 300 circumferentially rotates along the circular rail 200 as mentioned above.

The rotational drive may rotate all of the plurality of spinning rails 300 in a batch, but preferably, each of the spinning rails 300 may be individually rotated.

For example, the printer apparatus 10 of the present invention includes a first gear 600 having a tooth structure configured along an outer circumferential surface or an inner circumferential surface of the circular rail 200 as shown in FIGS. It is connected to two or more second gear 700 and the rotation shaft of each of the second gear 700 which is arranged to interlock with the one gear 600 and is driven by the control signal of the control unit to the second gear 700 It is configured to further include two or more rotation motors 800 to give a rotational force.

In addition, one end of each rotary motor 800 is coupled to the other end of the one spinning rail 300, the corresponding spinning rail 300 coupled by the drive of the rotary motor 800 is the circular rail 200 individually Can be rotated circumferentially.

In addition, the printer apparatus 10 of the present invention enables the supply of the filament 20 to be smoothly performed even with the movement of the spinning rail 300 or the slide block 400 in the process of forming and outputting an output object.

For example, as shown in FIG. 2, the radiation rail 300 constitutes an open portion 310 so that the body can be separated into two along its longitudinal direction, and ends toward the inner center of the circular rail 200. At least one ring-shaped fastener 320 is formed in the through hole is configured.

One end of the spinning rail 300 is rotated between the ends of the other spinning rails 300-1 and the fastener 320 so that the through holes coincide with each other so that the rotation pin 330 is in the through hole of the fastener 320 that is overlapped. ) So that the mutual spinning rails 300 and 300-1 can be connected.

In this case, the rotary pin 330 has a diameter relatively smaller than the diameter of the through hole to form a gap with the through hole of the fastener 320 to act as a rotating shaft, preferably the fastener 320 After mounting the bearing in the through hole, the rotary pin 330 by fitting to each of the spinning rails 300 to the axis of the rotary pin 330 to smoothly rotate the rotation can be made.

And the slide block 400 is configured to surround the outer surface of the spinning rail 300, the upper surface passes through the open portion 310 and communicates with the filament inlet 510 of the nozzle unit 500 The communicating tube 410 is configured to be exposed.

Accordingly, the filament inlet of the filament 20 is introduced into the filament 20 through the communication pipe 410 exposed in the process of linearly moving the slide block 400 along the spinning rail 300, 510 to be supplied and supplied, it is possible to prevent the twisting of the filament 20 or interference with other adjacent filament 20 in the supply process of the filament 20.

Hereinafter, an operating state of the printer apparatus 10 according to an embodiment of the present invention will be described.

First, the control unit, which is one component of the present invention, receives design information about an output object. The controller generates a control signal corresponding to the design information by a predetermined program, and transmits the control signal to the respective components of the printer apparatus 10 so that driving can be controlled.

For example, the controller calculates a plurality of stacked surfaces corresponding to the shape of the output object based on the input 3D data, but divides each stacked surface into a plurality of regions while selecting one nozzle unit for each divided region. After allocating the divided regions for each nozzle so as to be in charge of the 500, the control unit outputs a control signal so that the selected nozzle units 500 simultaneously discharge the filament melt in the allocated divided regions.

The control signal output from the control unit can be transmitted to the work plate 100, the circular rail 200, the spinning rail 300, the slide block 400 and the nozzle unit 500, one by the control signal The spinning rail 300 is selected, the circumferential rotation of the selected spinning rail 300 and the linear movement of the slide block 400 coupled to the spinning rail 300 and the work plate 100 and the circular rail ( It is possible to control the movement of the respective components, such as the adjustment of the separation distance between the 200, the amount and heating time of the filament 20 supplied to each nozzle unit 500 in the allocated divided region, the discharge amount and discharge of the molten filament melt Speed and the like can be controlled.

The control of such a control unit may be performed in stages, or may be simultaneously performed so that each component may be driven organically with each other.

As described above, the printer device 10 of the present invention divides one stacking surface into a plurality of surfaces in molding and outputting one output object, and assigns the divided surfaces to selectively cover the plurality of nozzles, thereby providing each nozzle. By controlling them to be driven independently, the output time can be drastically shortened for a conventional 3D printer which outputs one undivided stacking surface through one nozzle, and especially on one work plate 100. Since the above-described output objects can also be molded and output at the same time, as a result, the productivity of the FDM type 3D printer can be improved.

5 is a perspective view illustrating a fixing structure of a fixing frame according to an embodiment of the present invention, and FIG. 6 is a perspective view illustrating an example in which the fixing frame of FIG. 5 is configured in a plurality of forms.

The printer device 10 of the present invention can be fixed and supported by the fixing frame 900 as shown in FIG.

For example, the fixed frame 900 may include a vertical frame 910, a horizontal frame 920, and a reinforcement frame 930.

The vertical frame 910 fixes and supports the horizontal frame 920 and the reinforcement frame 930 in an upright structure.

One end of the horizontal frame 920 may be coupled to the vertical frame 910, and the other end may be coupled to the rotating pin 330 for connecting the plurality of spinning rails 300.

The reinforcement frame 930 may also be coupled to one end of the longitudinal frame 910 and the other end may be coupled to the rotating pin 330 for connecting a plurality of spinning rails 300, and the longitudinal frame 910. By connecting the transverse frames 920 in an oblique direction, it is configured to enable stable rotational driving while supporting the weight of the circular rail 200 or the like.

Referring to FIG. 6, the structure of the above-described fixing frame 900 is provided with at least two, so that the 3D printer apparatus 10 may be more firmly fixed and supported, and the apparatus may be independently installed without a separate fixing facility. It is.

7 is a perspective view illustrating a guide frame and a fixing structure of a fixing frame and a spinning rail according to another embodiment of the present invention.

Meanwhile, the fixing frame 900 according to another embodiment of the present invention may be configured to guide the circumferential rotational drive of the spinning rail 300 together with a function as a fixing structure as shown in FIG. 7.

In detail, the fixed frame 900 according to the present embodiment may include a vertical frame 910-1, a horizontal frame 920-1, and a reinforcement frame 930-1 as in the above-described embodiment.

The vertical frame 910-1 has an upright structure to fix and support the horizontal frame 920-1 and the reinforcement frame 930-1.

One end of the horizontal frame 920-1 may be coupled to the vertical frame 910, and the other end may be coupled to the reinforcement frame 930-1.

In this case, the horizontal frame 920-1 is disposed to cross the upper surface of the circular rail 200, and the horizontal frame 920-1 and the circular portion at a portion facing the upper surface of the circular rail 200. A fastener 921-1 coupling the rails 200 is provided to allow the circular rail 200 to be stably fixed and supported even in the circumferential rotational drive of the spinning rail 300.

One end of the reinforcement frame 930-1 may be coupled to the longitudinal frame 910-1, and the other end may be coupled to the rotation pin 330 for connecting a plurality of spinning rails 300. By connecting the frame 910-1 and the horizontal frame 920-1 in an oblique direction, it is configured to enable stable rotational driving while supporting a central portion of the circular rail 200.

In addition, in the present embodiment, it may further include a guide means for guiding the circumferential rotational drive of the circular rail (200).

Referring to FIG. 7, first of the circular rail 200, a guide rail 210 may be configured along one surface of the outer circumferential surface or the inner circumferential surface of which the first gear 600 is not formed, and the guide rail 210. The upper surface and the lower surface of the) may be a guide projection 211 of a triangular pyramid shape, respectively.

In addition, the spinning rail 300 has a pair of guide rollers 340 that rotate in engagement with the guide protrusion 211 of the guide rail 210 at the other end thereof, thereby driving the circumferential rotation of the spinning rail 300. One end of the spinning rail 300 is supported by the reinforcement frame 930-1, and the other end thereof is supported by the guide rail 210, so that rotational driving may be guided.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

10: printer device of the present invention 20: filament
100: work plate 200: round rail
210: guide rail 211: guide protrusion
300: spinning rail 310: open area
320: fastener 330: rotary pin
340: guide roller 400: slide block
410: communication tube 500: nozzle unit
510: filament inlet 520: heating block
530: discharge nozzle 600: first gear
700: second gear 800: rotating motor
900: fixed frame 910, 910-1: vertical frame
920, 920-1: Horizontal frame 921-1: Fixture
930, 930-1: Reinforcement frame

Claims (4)

A circular rail mounted to be spaced apart from an upper surface of the work plate in a circular ring shape;
Two or more spinning rails coupled in a radial structure from an inner center of the circular rail and configured to be circumferentially rotated on the circular rail;
A slide block coupled to each of the spinning rails so as to slide forward and backward along the spinning rails;
A heating block and an inner space of the heating block having a filament inlet into which the filament supplied from the outside is inserted and an inner space communicating with the filament inlet and melting the filament in the solid state introduced by heating the inner space to a predetermined melting temperature. A nozzle unit communicating with the nozzle and including a discharge nozzle for discharging the melted filament melt in the inner space to an upper surface of the work plate, the nozzle unit being coupled to a bottom surface of the slide block; And
By receiving the design information of the output object and selectively dividing the stacking surface for the output object by a predetermined program, and assigns an allocation area for each nozzle unit, each nozzle unit can discharge the filament melt independently in the assigned allocation area And a control unit for controlling the driving of the radiation rail and the slide block so that
The spinning rail,
One or more ring-shaped fasteners are formed at one end of the circular rail and open toward the inner center of the circular rail, and are coupled by one end of the other radial rail and a rotation pin inserted into the fastener.
The slide block,
It is configured to surround the outer surface of the spinning rail and the upper surface is configured to expose the communication tube communicating with the filament inlet port through the opening portion,
The discharge nozzle,
Radial is characterized in that one end of the heating block toward the inner center of the circular rail, the installation angle is configured to have an acute angle with respect to the vertical direction and at least one side toward the other discharge nozzle facing each other consists of a vertical plane 3D printer apparatus having a discharge nozzle.
delete delete The method of claim 1,
A first gear having a tooth structure configured along an outer circumferential surface or an inner circumferential surface of the circular rail;
At least two second gears engaged with the first gears to rotate in rotation; And
And at least two rotation motors connected to the rotation shafts of the second gears and driven by a control signal of the controller to impart rotational force to the second gears.
One side of each rotary motor is coupled to the other end of the spinning rail 3D printer apparatus having a radial discharge nozzle, characterized in that the spinning rail is circumferentially rotated on the circular rail by the drive of the rotary motor.

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