KR20190071380A - 3d printer device having radial discharge nozzle - Google Patents

Abstract

The present invention relates to a 3D printer device having a radial output nozzle, which is able to significantly improve the output speed of an output object compared to a single nozzle by arranging and installing a plurality of nozzles in a radial structure in a 3D printer of a fused deposition modeling (FDM) method, controlling each nozzle for independent driving, and dividing one output plane into a plurality of parts. More specifically, the present invention includes: a circular rail which is formed in a circular ring shape and installed to be spaced apart from the upper surface of a working plate; two or more radial rails which are combined from the inner center of the circular rail in a radial structure and are formed to be able to rotate on the circular rail in a radial direction; a slide block which is coupled to each radial rail to slide in forward/backward directions along the radial rails; a nozzle unit which is combined with the bottom surface of the slide block, receives filaments from the outside, melts the supplied filament, and discharges the melted filament onto the work plate; and a control unit which provides assignment areas to each nozzle unit by receiving the design information of an output object and selectively dividing a stacking surface for the output object by a preset program, and controls the driving of the slide block and the radial rails for each nozzle unit to be able to independently draw out filament melt in the given assigned areas.

Description

Technical Field [0001] The present invention relates to a 3D printer device having a radial discharge nozzle,

The present invention relates to an FDM (Fused Deposition Modeling) type 3D printer in which a filament is formed by melting a filament, which is a thermoplastic plastic, in a nozzle, and more specifically, a plurality of nozzles are arranged and constructed in a radial structure, The present invention relates to a 3D printer device having a radial discharge nozzle capable of independently controlling the driving of the nozzle so that the output speed of an output object can be remarkably improved as compared with a single nozzle by dividing one output plane into a plurality of output planes.

2. Description of the Related Art In recent years, the development of printer technology has led to an increase in the use of 3D printers capable of three-dimensionally outputting and outputting output objects.

Although the 3D printer has been used for the purpose of modeling before the mass production or for producing the sample, recently, a technical basis has been developed that can be used for mass production of products with a small number of small-volume products.

The 3D printer has various types according to the purpose of use, but a wire or a filament made of a thermoplastic plastic is supplied through a transfer device, and the supplied wire or filament is positioned relative to the workbench in three directions of X, Y and Z Dimensional plane shape and stacking it on a work table to form an object in 3D, is commonly used in the present invention.

Such a 3D printing method is referred to as an FDM (Fused Deposition Modeling) method.

In addition, the MJM (Multi Jet Modeling) method in which a photocurable resin is melted through a nozzle and sprayed like an ink jet printer, then cured with a UV light and laminated, and a method in which a portion irradiated with a laser beam is cured SLS (Selective Laser Sintering) method using a principle of solidification using a functional polymer or a metal powder instead of a photo-curable resin in SLA (Stereo Lithographic Apparatus) method using SLA (SLA).

As described above, the FDM method is the most commonly used 3D printer method. However, the FDM method is strong in strength, strong in humidity, and has excellent durability. In particular, Since it is not suitable for large-scale production because the production speed is considerably slower than other methods, it is mainly used for personal use and home use which can be used by open source at present. In addition to the productivity problem, FDM 3D printer It is urgently required to develop a technology that can be used.

Korean Registered Patent No. 10-1346704 (Announcement of 31 December 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an FDM (Fused Deposition Modeling) 3D printer in which a plurality of nozzles are arranged and constructed in a radial structure, and each nozzle is controlled to be independently driven, And to provide a 3D printer apparatus having a radial output nozzle capable of remarkably improving the output speed of an output object relative to a single nozzle.

According to an aspect of the present invention, there is provided a 3D printer having a radial discharge nozzle, the circular printer comprising: a circular rail mounted in a circular ring shape so as to be spaced apart from an upper surface of the work plate; At least two radial rails joined in a radial configuration from an inner center of the circular rail and configured to be circumferentially rotatable on the circular rail; A slide block coupled to each of the radial rails to slide in a forward / backward direction along the radial rail; A nozzle unit coupled to a bottom surface of the slide block, for supplying a filament from the outside, melting the nozzle, and discharging the filament onto the working plate; And an output unit for outputting the filament melt to the output unit, wherein the output unit is configured to output the filament melt to the nozzle unit, And a control unit for controlling driving of the radiation rail and the slide block.

As one example, the radiating rails constitute an opening portion along the longitudinal direction, and at one end thereof facing the inner center of the circular rail, one or more ring-shaped fasteners are formed, and one end of the adjacent one of the other radiating rails, And the slide block is configured to surround the outer surface of the radiation rail and the upper surface thereof may be configured to expose the communicating tube communicating with the filament inlet of the nozzle portion through the opening portion .

As one example, the nozzle unit includes a discharge nozzle through which molten filaments are discharged, and the discharge nozzle is configured at one end of a heating block facing the inner center of the circular rail, and has an acute angle with respect to the vertical direction as an axis So that there is no mutual interference with the discharge nozzles of other adjacent nozzle units.

As one example, a first gear having a serrated structure configured along an outer circumferential surface or an inner circumferential surface of the circular rail; At least two second gears arranged to engage and rotate with the first gear; And two or more rotation motors connected to the rotation shafts of the respective second gears and driven by control signals of the control unit to apply rotational force to the second gears, So that the radiating rails can be rotated circumferentially on the circular rails by driving the rotary motor.

As described above, in the 3D printer apparatus having the radial discharge nozzle of the present invention, in the FDM (Fused Deposition Modeling) type 3D printer, a plurality of nozzles are arranged and constructed in a radial structure, and each nozzle is independently controlled to be driven The output speed of the output object can be remarkably improved as compared with a single nozzle by dividing one output plane into a plurality of output planes, and more than two output objects can be formed and output at the same time, resulting in an improvement in productivity.

1A and 1B are perspective views illustrating the construction of a 3D printer apparatus having a radial discharge nozzle according to an embodiment of the present invention.
2 is a perspective view showing a configuration of a unit radial rail according to an embodiment of the present invention;
3 is a perspective view illustrating a configuration of a unit nozzle unit according to an embodiment of the present invention.
4A to 4C are views showing a nozzle unit according to an embodiment of the present invention.
5 is a perspective view illustrating a fixing structure of a stationary frame according to an embodiment of the present invention.
6 is a perspective view showing an example in which the fixed frame of Fig.
FIG. 7 is a perspective view showing a guide and fixing structure of a fixed frame and a radiating rail according to another embodiment of the present invention; FIG.

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

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

A 3D printer device (hereinafter, referred to as 'printer device 10') having a radial discharge nozzle of the present invention is a FDM (Fused Deposition Modeling) method in which a product is formed by melting a filament, which is a thermoplastic plastic, In a 3D printer, a plurality of nozzles other than a single nozzle are arranged and constructed in a radial manner, and each of the nozzles can be independently driven, thereby significantly improving the output speed of the output object.

Here, the filament 20 is a plastic resin which is a material of an output object, and its material, color and the like can be determined in consideration of the external shape of a desired output object.

The filament 20 may be intermittently or continuously supplied to a nozzle unit 500 described below in a form wound on a roller or the like as a constitution of the printer apparatus 10, And can be melted and discharged as a melt by the extruder 500.

The printer apparatus 10 of the present invention includes a work plate 100, a circular rail 200, a radiation rail 300, a slide block 400, a nozzle unit 500, and a control unit .

The work plate 100 functions as a work table for providing a space in which an output object is molded.

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

In the process of forming the output object, the height of the output object is gradually increased as the filament melt is sequentially stacked on the upper surface of the work plate 100. The height of the work plate 100 from the circular rail 200 The work space can be secured only if it is spaced apart.

That is, since the distance between the working plate 100 and the circular rail 200 must be relatively increased as the height of the output object is increased, the working plate 100 and the circular rails 200 are spaced apart from each other It is desirable that the distance be adjustable.

In this case, the adjustment means for adjusting the spacing distance may include both the work plate 100 or the circular rail 200 or the work plate 100 and the circular rail 200 as described above, And therefore, a detailed description thereof will be omitted.

In the present invention, any one of the work plate 100 and the circular rail 200 may be configured to be movable up and down. In the present invention, the work plate 100 is lifted and lowered.

The radiating rail 300 is coupled radially from the inner center of the circular rail 200 and is configured to be able to rotate in the circumferential direction on the circular rail 200.

The radiating rail 300 guides the linear movement of the slide block 400, which will be described below.

The radiation rail 300 may have at least two radial structures.

1A and the like, six radiation rails 300 are formed in a symmetrical manner. However, the present invention is not limited to the number of the radiation rails 300, It is possible to select and arrange an appropriate number in consideration of the driving range and the number of the surface division allocated in the control section described below.

It is a matter of course that the number of the slide block 400 and the nozzle unit 500 which are coupled to the radiation rail 300 corresponding to the number of the radiation rails 300 also varies.

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

Although the slide block 400 is not shown in the drawing, a driving source such as a driving motor may be mounted to implement a linear movement on the radiation rail 300. The driving source may be a control signal of a control unit As shown in FIG.

The circumferential rotation drive of each radiation rail 300 and the linear sliding drive of each slide block 400 can be performed independently as shown in FIG.

Meanwhile, the nozzle unit 500 is coupled to the bottom surface of the slide block 400 so as to face the work plate 100 and is slidingly coupled with the slide block 400, and supplies the solid filament 20 from the outside And is melted and discharged onto the upper surface of the work plate 100.

3, the nozzle unit 500 includes a filament inlet 510 into which a filament 20 supplied from the outside is inserted, an inner space communicating with the filament inlet 510, A heating block 520 which melts the filament 20 in a solid state heated by a predetermined melting temperature and a heating block 520 which communicates with the inner space of the heating block 520 and melts the melted filament melt in the inner space, And a discharge nozzle 530 for discharging the droplets to the upper surface.

4A and 4B, the discharge nozzle 530 is formed at one end of the heating block 520, which faces the inner center of the circular rail 200, and the installation angle b is a vertical axis It is preferable that one side face facing the other discharge nozzle 530 facing each other is formed as a vertical plane.

4C, when the two or more nozzle units 500 are distributed in the central region of the working plate 100, the nozzle units 500 (see FIG. 4C) do not interfere with the other discharge nozzles 530 facing each other, So that the discharge region a can be carried out without a region that is not a dead zone, that is, a region that does not output to the center portion as well as the edge portion of the work plate 100.

Although the nozzle unit 500 is illustrated as having a single filament inlet 510 as shown in FIG. 3 and the like, the present invention is not limited thereto, and at least two filaments 20 of different colors may be introduced and used selectively. Of course.

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

For example, the control unit may calculate a plurality of stacked surfaces corresponding to the shape of the output object based on the 3D data input by the controller, and divide each stacked surface into a plurality of regions, And the control unit 500 outputs control signals so that the nozzle units 500 selected in the respective divided regions can simultaneously discharge the filament melt.

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

Meanwhile, the printer apparatus 10 according to an embodiment of the present invention is configured such that the radiating rail 300 is rotated in the circumferential direction along the circular rail 200 as described above.

This rotary drive may rotate all of the plurality of radiation rails 300 at the same time, but is preferably configured to rotate the respective radiation rails 300 individually.

For example, as shown in FIGS. 1A and 2, the printer device 10 of the present invention includes a first gear 600 having a saw tooth structure formed along an outer circumferential surface or an inner circumferential surface of the circular rail 200, Two or more second gears 700 arranged to engage with the first gear 600 in rotation and a second gear 700 connected to the rotation axis of each second gear 700 and driven by a control signal of the control unit, And two or more rotation motors 800 for imparting a rotational force.

The other end of one radiation rail 300 is coupled to one side of each rotary motor 800 so that the corresponding radiation rail 300 coupled to the rotary motor 800 by driving the rotary motor 800 is individually connected to the circular rail 200. [ As shown in Fig.

In addition, the printer device 10 of the present invention can smoothly supply the filament 20 to the movement of the radiation rail 300 or the slide block 400 during the process of forming and outputting the output object.

For example, as shown in FIG. 2, the radiating rail 300 includes an opening 310 for separating the body into two along the longitudinal direction thereof, One or more ring-shaped fasteners 320 each having a through-hole are formed.

One end of the radiating rail 300 is overlapped with one end of the adjacent other radiating rail 300-1 and the fastening hole 320 so that the through hole of the fastening hole 320 of the fastening hole 320 So that the mutual radiation rails 300 and 300-1 can be connected to each other.

At this time, the rotation pin 330 has a diameter that is relatively smaller than the diameter of the through hole to form a through hole and a clearance of the coupling hole 320 so as to act as a rotation axis. Preferably, After the bearings are mounted in the through holes, the rotation pins 330 are inserted into the through holes, so that the respective radiation rails 300 can be smoothly rotated by the rotation pins 330.

The slide block 400 is configured to enclose the outer surface of the radiating rail 300 and the upper surface of the slide block 400 is communicated with the filament inlet 510 of the nozzle unit 500 through the opening 310, The communicating tube 410 is exposed.

The filament 20 is introduced through the exposed communication pipe 410 in the process of linearly moving the slide block 400 along the radiation rail 300 and the filament 20 is introduced into the filament inlet 500 of the nozzle unit 500 The filament 20 can be prevented from being twisted or interfered with the adjacent filament 20 even during the feeding process of the filament 20.

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

First, the control unit, which is a component of the present invention, receives design information on an output object. The control unit 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 the driving can be controlled.

For example, the control unit may calculate a plurality of stacked surfaces corresponding to the shape of the output object based on the 3D data input by the controller, and divide each stacked surface into a plurality of regions, And the control unit 500 outputs control signals so that the nozzle units 500 selected in the respective divided regions can simultaneously discharge the filament melt.

The control signal output from the control unit can be transmitted to the work plate 100, the circular rail 200, the radiation rail 300, the slide block 400, and the nozzle unit 500, The above-described radiation rail 300 is selected and the rotation of the selected radiation rail 300 in the circumferential direction and the linear movement of the slide block 400 coupled to the radiation rail 300 and the operation of the working plate 100 and the circular rail The amount of the melted filament melt and the discharge amount of the filament 20 are controlled by controlling the amount of the filament 20 supplied to the nozzle unit 500 within the allotted division area, Speed and the like can be controlled.

The control of such a control unit can be performed stepwise, or can be performed concurrently so that the respective configurations can be mutually orally driven.

As described above, in the printer device 10 of the present invention, when forming and outputting one output object, one laminated surface is divided into a plurality of surfaces, and the divided surfaces are assigned so that a plurality of nozzles can selectively take charge thereof, So that it is possible to remarkably shorten the output time for a conventional 3D printer in which one laminated surface that is not divided is output through one nozzle, The output object can be formed and output at the same time. As a result, the productivity of the FDM type 3D printer can be improved.

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

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

For example, the fixed frame 900 may include a longitudinal frame 910, a transverse frame 920, and a reinforcing frame 930.

The longitudinal frame 910 fixes and supports the transverse frame 920 and the reinforcing frame 930 in an upright configuration.

One end of the transverse frame 920 may be coupled to the longitudinal frame 910 and the other end may be coupled to the rotation pin 330 for connecting the plurality of radiation rails 300.

The reinforcement frame 930 may also be coupled to the longitudinal frame 910 at one end and coupled to the rotation pin 330 at the other end to connect the plurality of radiation rails 300, And by connecting the transverse frames 920 in an oblique direction, it is possible to perform stable rotation driving while supporting the weight of the circular rail 200 or the like.

Referring to FIG. 6, at least two structures of the fixed frame 900 described above can be more firmly fixed and supported by the 3D printer apparatus 10, and the apparatus can be designed to be installed independently .

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

Meanwhile, the stationary frame 900 according to another embodiment of the present invention may be configured to guide rotation of the radial rail 300 in the circumferential direction together with the function of the stationary structure as shown in FIG.

Specifically, the fixed frame 900 of the present embodiment can be configured to include the longitudinal frame 910-1, the transverse frame 920-1, and the reinforcing frame 930-1 as in the above-described embodiment.

The longitudinal frame 910-1 fixes and supports the transverse frame 920-1 and the reinforcing frame 930-1 in an upright structure.

One end of the transverse frame 920-1 may be coupled to the longitudinal frame 910 and the other end may be coupled to the reinforcing frame 930-1.

The transverse frame 920-1 is disposed to cross the upper surface of the circular rail 200. The transverse frame 920-1 and the circular frame 920-1 are disposed at a portion facing the upper surface of the circular rail 200, The circular rails 200 can be stably fixed and supported even in the circumferential rotational drive of the radiation rail 300 by providing a fixture 921-1 for coupling between the rails 200. [

One end of the reinforcing 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 the plurality of radiation rails 300, By connecting the frame 910-1 and the transverse frame 920-1 in an oblique direction, stable rotation driving is possible while supporting the central portion of the circular rail 200. [

Further, in the present embodiment, it may further include guide means for guiding rotational driving of the circular rail 200 in the circumferential direction.

Referring to FIG. 7, the circular rail 200 may have a guide rail 210 formed on an outer circumferential surface or an inner circumferential surface of the guide rail 210 The guide protrusions 211 may be formed on the upper surface and the lower surface, respectively.

A pair of guide rollers 340 which are engaged with the guide protrusions 211 of the guide rail 210 are mounted on the other end of the radiation rail 300 to rotate the radiation rail 300 in the circumferential direction One end of the radiating rail 300 is supported by the reinforcing frame 930-1 and the other end is supported by the guide rail 210 so that the rotation driving can be guided.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the 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 20 of the present invention: filament
100: work plate 200: circular rail
210: guide rail 211: guide projection
300: Radial rail 310: Open area
320: fastener 330: rotating pin
340: guide roller 400: slide block
410: communicating tube 500: nozzle part
510: filament inlet 520: heating block
530: Discharge nozzle 600: First gear
700: second gear 800: rotary motor
900: fixed frame 910, 910-1:
920, 920-1: transverse frame 921-1: fastener
930, 930-1: reinforcing frame

Claims (4)

A circular rail mounted in a circular ring shape so as to be spaced from the upper surface of the working plate;
At least two radial rails joined in a radial configuration from an inner center of the circular rail and configured to be circumferentially rotatable on the circular rail;
A slide block coupled to each of the radial rails to slide in a forward / backward direction along the radial rail;
A nozzle unit coupled to a bottom surface of the slide block, for supplying a filament from the outside, melting the nozzle, and discharging the filament onto the working plate; And
The design information of the output object is inputted and the laminated surface of the output object is selectively divided by the preset program to assign an allocation area for each nozzle part and each nozzle part can independently derive the filament melt in the assigned area And a control unit for controlling driving of the radiating rail and the slide block so that the radial output nozzle and the radiating output nozzle are aligned with each other.
The method according to claim 1,
The radiation rail
And one end of each of the ring-shaped fasteners facing the inner center of the circular rail is connected to one end of another adjacent radial rail by a rotation pin inserted into the fastener,
The slide block includes:
And a communication pipe communicating with a filament inlet of the nozzle portion is exposed through the opening portion on an upper surface of the guide portion.
3. The method of claim 2,
Wherein the nozzle portion includes a discharge nozzle through which melted filaments are discharged,
Characterized in that the discharge nozzle is formed at one end of a heating block facing the inner center of the circular rail and is configured to have an acute angle with respect to the vertical direction so as not to interfere with the discharge nozzles of adjacent other nozzle parts A 3D printer apparatus having a nozzle.
The method according to claim 1,
A first gear of a saw tooth structure formed along an outer circumferential surface or an inner circumferential surface of the circular rail;
At least two second gears arranged to engage and rotate with the first gear; And
Two or more rotation motors connected to the rotation shafts of the respective second gears and driven by a control signal of the control unit to apply rotational force to the second gears,
Wherein the other end of the radiating rail is coupled to one side of each rotary motor, and the radiating rail is rotated in the circumferential direction on the circular rail by driving the rotary motor.

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