KR102088676B1 - A 3D printing system, and a driving method thereof - Google Patents

Abstract

The present invention relates to a nozzle module for three-dimensional printing which can discharge contents to various sizes by rotationally moving a plurality of nozzles having different diameters, thereby replacing the nozzles fastened to content supply units, and can discharge residual contents inside the nozzles to the outside by communicating a discharge-completed nozzles with an air injection unit, thereby supplying compressed air; a three-dimensional printing system′ and a driving method of the three-dimensional printing system. The three-dimensional printing system according to the present invention includes: a main body in which a plurality of holes are formed to be spaced apart from one another at predetermined intervals; at least one air injection unit which is communicated with the holes and supplies the compressed air; a plurality of content supply units which are communicated with other remaining holes except the hole having the air injection unit inserted thereinto such that the content supply units supply different contents; a driving unit which is positioned inside the main body to produce a rotational driving force; a rotation unit which is positioned on the bottom of the main body and rotated by the rotational driving force of the driving unit; and the plurality of nozzles which are spaced apart from one another at predetermined intervals along the circumference of the rotation unit and rotated along with the rotation unit according to rotation of the rotation unit to be fastened to the air injection unit or content supply units, respectively.

Description

A 3D printing system and a driving method thereof

The present invention relates to a nozzle module for 3D printing, a 3D printing system, and a method for driving the same, by rotating a plurality of nozzles having different diameters to rotate and replacing nozzles that are engaged with the content supply unit, contents can be discharged in various sizes. The present invention relates to a nozzle module for 3D printing, a 3D printing system, and a driving method for supplying compressed air by communicating a nozzle whose discharge has been completed with an air injection unit to discharge residual contents inside the nozzle to the outside.

The use of 3D printers capable of forming the object as it is by using 3D data on the object is increasing, and these 3D printers have been used for the same purpose as sample production of objects in the past. It is also used to mold products that can be mass-produced.

This 3D printer product shaping method largely forms a target object in a two-dimensional planar form, while stacking it in three dimensions, melt-attaching it to form a shape, and cutting to create a shape by cutting a mass of material. There is a brother.

And, as a kind of additive type, supply the wire or filament made of thermoplastic plastic through the supply reel and the transfer roll, and supply the filament supplied from the heater nozzle mounted on the 3D transfer mechanism that is positioned in the XYZ three directions relative to the workbench. There is a filament melt lamination molding method of forming an object in three dimensions by laminating it on a work table while forming a two-dimensional planar shape by melting and discharging it.

However, in this conventional filament melt lamination molding method, since a fixed nozzle head is used in which the diameter of the discharge hole through which the molding material is ejected is used, it is difficult to eject the molding material in various sizes, and this results in a complex composite formation. A problem arises in that the time required to shape the shape is lengthened.

Patent Publication No. 10-2016-0052199

The present invention is to solve the problems of the existing technology difficult to discharge the molding material in a variety of sizes, by rotating a plurality of nozzles having different diameters by rotating the nozzles that are engaged with the content supply unit, discharging the contents in various sizes To provide a 3D printing nozzle module, a 3D printing system, and a driving method therefor.

In addition, the present invention can discharge the remaining contents inside the nozzle by supplying compressed air by communicating with the air injection unit through the nozzle that has been discharged, thereby preventing different contents from being mixed in the same nozzle. It is intended to provide a 3D printing nozzle module and a 3D printing system including the same, and a method of driving such a system, capable of producing high-quality products in which different contents are not mixed even in continuous output of foods with high viscosity.

In order to achieve the object as described above, the nozzle module for 3D printing of the present invention, the body 100 is formed with a plurality of holes 110 spaced apart at regular intervals; At least one air injection unit 200 communicating with the hole 110 and supplying compressed air; A plurality of content supply units 300 communicating with the other holes 110 except for the hole 110 in which the air injection unit 200 is in communication to supply different contents; A driving unit 400 located inside the main body 100 to generate a rotational driving force; A rotating part 500 located at a lower portion of the main body 100 and rotated by a rotational driving force of the driving part 400; And a plurality of nozzles 600 spaced apart at regular intervals along the circumference of the rotating part 500 and rotated together according to the rotation of the rotating part 500 to be respectively engaged with the air injection part 200 or the content supply part 300; It includes.

At this time, it is preferable that the diameters of the nozzles 600 are different from each other, and a ring 610 is provided on the upper outer circumferential surface of the nozzle 600, so that the contents moving from the contents supply unit 300 to the nozzles 600 are nozzles ( 600) can be prevented from leaking to the outside.

On the other hand, another embodiment of the present invention 3D printing system, the body 100 is formed with a plurality of holes 110 spaced apart at regular intervals; At least one air injection unit 200 communicating with the hole 110 and supplying compressed air; A plurality of content supply units 300 communicating with the remaining holes 110 except for the hole 110 in which the air injection unit 200 is inserted, and supplying different contents; A driving unit 400 located inside the main body 100 to generate a rotational driving force; A rotating part 500 located at a lower portion of the main body 100 and rotated by a rotational driving force of the driving part 400; A plurality of nozzles 600 spaced apart at regular intervals along the circumference of the rotating part 500 and rotated together according to the rotation of the rotating part 500 to be fastened to the air injection part 200 or the content supply part 300, respectively; And after receiving a signal from the sensor 710 formed on one side of the driving unit 400, and outputs a control signal to the driving unit 400 to control the rotation angle of the driving unit 400, to determine the position of the nozzle 600 It includes; position control unit 700.

In addition, the 3D printing system of the present invention may further include a collection part 800 located at a lower portion of the rotating part 500 to collect the remaining contents inside the nozzle 600 discharged by the air injection part 200. have.

On the other hand, another method of driving a 3D printing system according to an embodiment of the present invention includes: rotating a rotating part by a driving part to fasten one nozzle to a selected content supply part; Supplying the contents to the fastened nozzle through the contents supply unit; Discharging the contents supplied to the nozzle; After discharging, the rotating portion is rotated by the driving portion to fasten the nozzle to the air injection portion; And injecting air into the nozzle through an air injection unit to remove residual contents inside the nozzle.

In addition, after the step of fastening, it is preferable to further include the step of determining the position of the nozzle by operating the position control unit to control the rotation angle of the driving unit.

The nozzle module for 3D printing according to the present invention, a 3D printing system, and a driving method thereof, are capable of discharging contents in various sizes by rotating and moving a plurality of nozzles having different diameters to replace nozzles that are engaged with the content supply unit Have

In addition, by supplying compressed air by communicating the nozzle with which the discharge has been completed, by communicating with the air injection unit, the remaining contents inside the nozzle can be discharged to the outside, so that different contents can be prevented from mixing in the same nozzle, and in particular viscosity It has the advantage of being able to produce high quality products that do not mix different contents even when continuously outputting high food.

1 and 2 are perspective views showing a nozzle module for 3D printing according to the present invention.
3 is a side view showing a nozzle module for 3D printing according to the present invention.
4 is a cross-sectional view of a nozzle module for 3D printing according to the present invention.
5 is a cross-sectional view of a 3D printing system according to the present invention.
6 is a flowchart illustrating a method of driving a 3D printing system according to the present invention.

Prior to the following description in detail through the preferred embodiment of the present invention, terms or words used in the present specification and claims should not be construed as being limited to the conventional or dictionary meanings, meanings corresponding to the technical spirit of the present invention To be interpreted as

Throughout this specification, when one member is positioned "above" another member, this includes not only the case where one member is in contact with the other member but also another member between the two members.

Throughout this specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

Terms such as "first" and "second" are for distinguishing one component from other components, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

Hereinafter, a 3D printing nozzle module of the present invention, a 3D printing system, and a driving method thereof will be described in more detail with reference to the drawings. Here, the accompanying drawings are exaggerated or simplified for a convenience and clarity of description and understanding of the structure and operation of the technology, and it is revealed that each component does not exactly match the actual size.

1 and 2 is a perspective view showing a nozzle module for 3D printing according to the present invention, FIG. 3 is a side view showing a nozzle module for 3D printing according to the present invention, and FIG. 4 is a nozzle for 3D printing according to the present invention It is a cross-sectional view of the module.

1 to 4, the nozzle module 10 for 3D printing according to the present invention includes a main body 100, an air injection unit 200, a plurality of contents supplying unit 300, a driving unit 400, and a rotating unit 500 ) And a plurality of nozzles 600.

A plurality of holes 110 spaced apart at regular intervals are formed in the main body 100, and the air injection unit 200 and the content supply unit 300 are respectively inserted into the hole 110. In addition, the driving unit 400 is located at the inner center of the main body 100, and the rotating part 500 connected to the driving part 400 is positioned below the main body 100.

Specifically, although not shown in the drawing, the main body 100 moves in the X-axis direction, the Y-axis direction or the Z-axis direction through the conveying means, and the position of the contents discharged through the nozzle 600 formed in the rotating part 500 Can be adjusted in three dimensions.

The air injection unit 200 is inserted into the hole 110 and supplies the compressed air transported through the tube 210 formed at the top to the nozzle 600 where the discharge is completed, thereby discharging the remaining contents inside the nozzle 600 to the outside. Since it can be discharged, it is possible to prevent different contents from being mixed in the same nozzle 600.

The content supply unit 300 is inserted into each of the remaining holes 110 except for the hole 110 into which the air injection unit 200 is inserted, and the content transferred through the tube 310 formed at the top to the nozzle 600 Supply. At this time, different contents are transferred to each contents supply unit 300, and the contents can be transferred to the contents supply unit 300 by an external extruder and then transferred to the nozzle 600.

On the other hand, as shown in Figure 4, the tube 310, it is preferable that the supply control valve 320 for adjusting the supply of the contents is formed, the supply control valve 320 by opening or closing the contents of the nozzle It is possible to adjust the time to be transferred to (600).

In addition, the contents are preferably, for example, foods such as chocolate, 쨈, fresh cream, and red beans, but are not limited thereto.

The driving unit 400 is located at the inner center of the main body 100, is connected to the rotating unit 500 located at the bottom of the main body 100, is connected to an external power source to generate a driving force to rotate the rotating unit 500.

The driving unit 400 may use a means capable of generating a rotational driving force by receiving a power source from the outside, and most preferably a stepping motor.

The stepping motor is a motor that moves at a predetermined angle in response to the number of input pulses, and the number of input pulses and the rotation angle of the motor are completely proportional, so that the rotation angle of the stepping motor can be accurately controlled.

Specifically, the rotation angle of the stepping motor is sensed through the sensor 710 (see FIG. 5) and transmitted to the position control unit 700 (see FIG. 5), and the position control unit 700 outputs an input pulse signal to the stepping motor. By controlling the rotation angle of the stepping motor, as described above, the number of input pulses and the rotation angle of the motor are completely proportional, so the nozzle 600 rotating by the rotational driving force of the stepping motor is supplied to the air injection unit 200 or contents It can be controlled to a position that accurately communicates with the supply unit 300.

The rotating part 500 is located under the main body 100 and is connected to the driving part 400 to rotate by the rotational driving force of the driving part 400.

Specifically, the rotating part 500 includes a plurality of nozzles 600 spaced apart at regular intervals along the circumference, and the nozzle 600 rotates together as the rotating part 500 rotates, so that the contents to be discharged by the user It may be fastened to the content supply unit 300 to be transferred, or may be fastened to the air injection unit 200.

For example, when the content supply unit 300 and the nozzle 600 are fastened, the content is supplied to the nozzle 600 through the content supply unit 300, and the product supplied by the nozzle 600 is discharged to the outside. Or by discharging the contents to the manufactured product to decorate.

At this time, it is preferable that the diameter or cross-section of the nozzle 600 is different from each other, and thus the nozzle 600 that is fastened to the content supply unit 300 by the rotation of the rotating part 500 is replaced to change the content to various sizes or shapes. It can be discharged.

As another example, when the air injection unit 200 and the nozzle 600 that is discharged are fastened, compressed air is supplied to the nozzle 600 through the air injection unit 200, and the remaining contents inside the nozzle 600 By discharging to the outside can effectively remove the residue inside the nozzle 600, it is possible to prevent different contents are mixed in the same nozzle (600).

That is, since the present invention includes the air injection unit 200, different contents can be continuously output without being mixed, and in particular, it is used for the output of highly viscous foods, so that foods with completeness can be output.

Meanwhile, the nozzle 600 further includes a ring 610 that prevents the contents from flowing out of the nozzle 600 when the contents move from the contents supply unit 300 to the nozzles 600 (see FIG. 4).

Specifically, the ring 610 is made of an elastic material such as styrene butadiene rubber, silicone rubber, and the like, and is in close contact with the upper outer circumferential surface of the nozzle 600, when the content moves from the content supply unit 300 to the nozzle 600 ( 600) to prevent the contents from leaking out.

In addition, the nozzle 600 is formed at the end, may include a nozzle opening and closing member (not shown) for adjusting the diameter of the nozzle 600, wherein the nozzle opening and closing member is preferably a shutter type, but is limited to this It does not work.

Specifically, as the nozzle opening and closing member is operated by a driving means (for example, a motor), the diameter of the nozzle 600 may be changed to be thick or thin, so that the diameter of the nozzle 600 may be variously changed. Therefore, the contents can be discharged in a size desired by the user.

5 is a cross-sectional view of a 3D printing system according to the present invention.

Referring to FIG. 5, the 3D printing system 20 according to the present invention includes a main body 100, an air injection part 200, a plurality of contents supply parts 300, a driving part 400, a rotating part 500, and a plurality of nozzles 600, a position control unit 700 and a collection unit 800 may be included. Here, the same components as the 3D printing nozzle module 10 will be omitted, and only different parts will be described.

The position control unit 700 receives the rotation angle of the driving unit 400 sensed by the sensor 710 formed on one side of the driving unit 400, and then outputs a control signal to the driving unit 400 to rotate the driving unit 400 The angle is controlled, and thus the position of the nozzle 600 can be precisely controlled.

That is, the nozzle 600 may be accurately communicated to the air injection unit 200 or the content supply unit 300 by the position control unit 700.

In addition, as an example, the position control unit 700 is interlocked with the application, after receiving a signal from the application, and outputs a control signal to the drive unit 400 to control the rotation angle of the drive unit 400, the drive unit 400 By rotating the nozzle 600 by rotation of the nozzle to replace the nozzle 600 that is fastened to the content supply unit 300, the content can be discharged to a size or shape desired by the user.

Further, as another example, the position control unit 700 may be linked with an application, and after receiving a signal from the application, output a control signal to a transfer means (not shown) to move the position of the main body 100, Accordingly, the contents can be discharged in a character or figure desired by the user.

The collection part 800 is located at a lower portion of the rotating part 500 and is formed at a position corresponding to the air injection part 200 to collect the remaining contents inside the nozzle 600 discharged by the air injection part 200. Plays a role.

Meanwhile, a method of driving the 3D printing system 20 having the above-described configuration will be described with reference to FIG. 6 as follows.

First, in the state in which the setting is completed as shown in FIG. 5, the rotating unit rotates by the driving unit, and the step (S100) of fastening one nozzle to the selected content supply unit is performed.

Specifically, a plurality of nozzles having different diameters or shapes may be rotated to fasten one nozzle to a selected content supply unit.

Next, a step (S200) of supplying the contents to the nozzles fastened through the contents supply unit proceeds, and the contents are transferred to the contents supply unit by an external extruder, and then transferred into the fastened nozzles.

Then, the step (S300) of discharging the contents supplied to the nozzle proceeds.

When the discharging step (S300) is completed, the rotating part is rotated by the driving part to fasten the nozzle to the air injection part (S400).

Next, a step (S500) of injecting compressed air into the nozzle through an air injection unit and discharging and removing residual contents inside the nozzle is performed.

Subsequently, until the output desired by the user is manufactured, the step (S500) of discharging and removing the remaining contents from the step (S100) of fastening one nozzle to the selected contents supply unit is repeatedly performed.

On the other hand, although not shown in Figure 6, after the step of fastening (S100, S400), it may further include the step of controlling the position of the nozzle by operating the position control unit to control the rotation angle of the driving unit (S600), Due to this, it is possible to accurately communicate the content supply unit and the nozzle, and the air injection unit and the nozzle.

The 3D printing system 20 according to the present invention rotates and moves a plurality of nozzles 600 having different diameters by the driving unit 400 to replace the nozzles 600 that engage with the content supply unit 300, thereby changing the contents Can be discharged in various sizes or shapes.

In addition, by supplying compressed air to the nozzle 600 through the air injection unit 200 of the present invention, the remaining contents inside the nozzle 600 can be discharged to the outside, and accordingly the residue inside the nozzle 600 It has the effect of being removed.

In particular, when continuously outputting a food with high viscosity, after the residue inside the nozzle 600 is removed, other contents are supplied into the nozzle 600 to produce a high-quality product in which different contents are not mixed. You can.

10: 3D printing nozzle module 20: 3D printing system
100: body 110: hole
200: air inlet 210: tube
300: content supply unit 310: tube
320: supply control valve 400: drive unit
500: rotating part 600: nozzle
610: ring 700: position control unit
710: sensor 800: collection part

Claims (7)

delete delete delete In the 3D printing system including a nozzle module 10 for 3D printing and the position control unit 700,
The nozzle module 10 for 3D printing,
A body 100 having a plurality of holes 110 spaced apart at regular intervals;
At least one air injection unit 200 communicating with the hole 110 and supplying compressed air;
A plurality of contents supply units 300 communicating with the remaining holes 110 except for the hole 110 into which the air injection unit 200 is inserted, and supplying different contents;
A driving unit 400 located inside the main body 100 to generate a rotational driving force;
A rotating part 500 located at a lower portion of the main body 100 and rotated by a rotational driving force of the driving part 400; And
A plurality of nozzles 600 spaced apart at regular intervals along the circumference of the rotating part 500 and rotated together according to the rotation of the rotating part 500 to be respectively engaged with the air injection part 200 or the content supply part 300; Including,
The position control unit 700, after receiving a signal from the sensor 710 located on one side of the driving unit 400, outputs a control signal to the driving unit 400 to control the rotation angle of the driving unit 400 nozzle By controlling the position of the 600 so as to be fastened with the air injection unit 200 or the content supply unit 300, compressed air is supplied through the air injection unit 200 to discharge the remaining contents inside the nozzle 600 to the outside And, through the content supply unit 300 to prevent different contents from being mixed in the same nozzle 600,
The driving unit 400 includes a stepping motor,
Each of the plurality of nozzles 600 is adjusted to have different diameters through a shutter-type nozzle opening and closing member,
A ring 610 is provided on the upper outer circumferential surface of the nozzle 600 to prevent the contents moving from the contents supply unit 300 to the nozzle 600 from flowing out of the nozzle 600, 3D Printing system. According to claim 4,
3D printing system characterized in that it further comprises; a collection unit 800 located at the lower portion of the rotating part 500 to collect the remaining contents inside the nozzle 600 discharged by the air injection part 200. . Rotating the rotating part by the driving part to fasten one nozzle to the selected content supply part;
Supplying the contents to the fastened nozzle through the contents supply unit;
Discharging the contents supplied to the nozzle;
After discharging, the rotating portion is rotated by the driving portion to fasten the nozzle to the air injection portion;
Determining a position of the nozzle by controlling the rotation angle of the driving unit by operating the position control unit; And
Including the step of injecting air into the nozzle through an air injection unit and discharging the remaining contents inside the nozzle.
The position control unit, after receiving a signal from a sensor located on one side of the driving unit, and outputs a control signal to the driving unit to control the rotation angle of the driving unit, to control the position of the nozzle to be fastened with the air injection unit or content supply unit By doing so, compressed air is supplied through the air injection unit 200 to discharge the remaining contents inside the nozzle 600 to the outside, and different contents are prevented from being mixed in the same nozzle 600 through the contents supply unit 300 And
The driving unit 400 includes a stepping motor,
Each of the plurality of nozzles 600 is adjusted to have different diameters through a shutter-type nozzle opening and closing member,
A ring is provided on the upper outer circumferential surface of the nozzle to prevent the contents moving from the contents supplying part to the nozzle from flowing out of the nozzle, a method for driving a 3D printing system.
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