KR20170047571A - 3D printer - Google Patents

Abstract

The present invention relates to a 3D printer. The 3D printer according to an embodiment of the present invention comprises: a bed; an extrusion part for extruding molding materials on the bed; a moving part for moving the extrusion part; and a driving part for performing at least one of tilting of the bed in the first direction or tilting of the bed in the second direction. As a result, even when the angle of a shape of a 3D artwork is inclined with respect to the ground, the 3D artwork is stably manufactured.

Description

3D printer {3D printer}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer, and more particularly, to a 3D printer capable of stably forming a sculpture even when the angle of the sculptural shape is inclined with respect to the ground.

The 3D printer is a device that sequentially ejects predetermined materials on the basis of a three-dimensional drawing, stacks up layer layers with a fine thickness, and outputs a three-dimensional shape of a real object.

These 3D printers have been developed and used for manufacturing, and various products can be manufactured using 3D printers.

Meanwhile, various efforts have been made to improve the precision and surface finish of products made with 3D printers.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a 3D printer capable of stably forming a molding object even when the angle of the molding object is inclined with respect to the ground.

According to an aspect of the present invention, there is provided a 3D printer including a bed, an extrusion portion for extruding a molding material on a bed, a moving portion for moving the extrusion portion, a tilting- And a driving unit for performing at least one of tilting.

According to another aspect of the present invention, there is provided a 3D printer including a bed, an extrusion unit for extruding a molding material on a bed, a moving unit for moving the extrusion unit, And a processor for controlling the driving unit to control the driving unit and the moving unit and controlling the driving unit such that the bed is inclined with respect to the paper surface according to the angle of the molding shape to be formed.

According to an embodiment of the present invention, a 3D printer includes a bed, an extrusion portion for extruding a molding material on a bed, a moving portion for moving the extrusion portion, and at least one of tilting the bed in the first direction or tilting in the second direction When the angle of the molding shape is inclined with respect to the ground, the bed is tilted so that the molding material is vertically stacked with respect to the ground, so that the molding material does not flow down and stably forms the molding .

In particular, by controlling the bed so that at least one of the first direction tilting or the second direction tilting is performed when the angle of the formed shape is less than or equal to the reference angle of 90 degrees with respect to the ground, The molding material can be stably formed without flowing down the molding material even when it is inclined.

On the other hand, when the angularity of the molding object is less than or equal to the reference angle of 90 degrees with respect to the ground, the movement order of the extruded portion is controlled so as to be variable, so that even if the angle of the molding object is inclined with respect to the ground, , It is possible to stably form the molding.

On the other hand, by varying the reference angle in accordance with the extrusion speed or temperature of the molding material, the molding material can be stably formed without flowing down.

FIG. 1 is a view showing the appearance of a 3D printer according to an embodiment of the present invention.
FIG. 2 is a perspective view showing an example of the interior of the 3D printer of FIG. 1. FIG.
Figures 3A-B illustrate various examples of the bed of Figure 2;
Figures 4A to 4C illustrate an example of sculpture creation.
Figs. 5A to 5C illustrate examples of sculptural creation of a 3D printer according to an embodiment of the present invention.
6 is an internal block diagram of the 3D printer of FIG.
7A to 7H are views referred to in the description of the operation of the mobile device of FIG.
8 is an example of the extruding portion of Fig.
Fig. 9 is another example of the extruding portion of Fig.
10 is a perspective view showing another example of the inside of the 3D printer of FIG.
11 illustrates an example of the sculptural generation of the 3D printer of Fig.
12 is a flowchart showing an operation method of a 3D printer according to an embodiment of the present invention.
13A to 13C are diagrams referred to in explanation of the operation method of Fig.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

FIG. 1 is a view showing the appearance of a 3D printer according to an embodiment of the present invention.

Referring to FIG. 1, a 3D printer 100 according to an exemplary embodiment of the present invention includes a case 101 forming an outer appearance, a cavity 50 formed in the case 101 and serving as a space for forming a molding, A moving device 200a disposed in the case 101 for moving and outputting material for forming a molding, and the like. In addition, there are provided a door 105 for entering and exiting the finished sculpture to and from the outside, a window 103 formed on the door 105 so as to be able to see the inside of the cavity 50, , A display (not shown) for displaying an operation state of the 3D printer, and the like.

Meanwhile, in the 3D printer described in the present specification, a first method in which a thermoplastic material (ABS, polyamide) made of a filament wire is melted in a nozzle to solidify the material in a thin film form and then laminate the material, a polymer material or a metal powder, A second method in which a laser is used to sinter the parts to be formed using a laser, and a photo-curing resin in a liquid state is placed in a chamber and the resin is cured by using laser light, ultraviolet light, digital light illumination A fourth method for curing a resin using ultraviolet rays at the same time of jetting a photo-curable liquid resin using an inkjet printhead, a method for cutting a material coated with an adhesive to a desired cross section by using a laser beam, And a fifth system in which the resin is laminated and formed.

In the present invention, a method of melting a thermoplastic material (ABS, polyamide) made of filament wires in a first method in a nozzle to solidify the same in a thin film form and then laminating it is described.

According to the first method, a step of post-curing is unnecessary, a product production time is shortened, a product having various colors can be produced, lightness and manufacturing cost are reduced.

Meanwhile, in accordance with an embodiment of the present invention, the mobile device 200a can move the attached carriage 280 into at least the x, y plane. On the other hand, the carriage 280 may be provided with an extrusion portion (300 in Fig. 2 or 7) for outputting filaments.

2) of the cavity 50. When the carriage 280 to be attached moves into the x, y plane by the moving device 200 and the heated molding material, that is, the filament, Bed (115b in Fig. 2). Thereby, the user can create the desired sculpture.

On the other hand, as the thermoplastic resin, ABS, PLA and the like can be used for the filament.

On the other hand, when the molding material is stacked vertically with respect to the ground and a molding is produced, the bed (115b in Fig. 2) disposed in the plate (115 in Fig. 2) It can move up and down depending on the stacking height of the molding.

However, when the angle of the shape of the molding object is inclined with respect to the ground surface, there is a case where the molding material flows downward in the direction of the ground by gravity on the inclined surface.

In order to prevent this, conventionally, a sopport method is employed to create a temporary molding, that is, a support for supporting a slope in the vicinity of an inclined surface forming an inclination with respect to the ground, When generating, support was separated.

However, according to this support method, when the support is separated, the surface is not smoothly separated.

In order to solve such a problem, the present invention proposes a method of inclining the bed, which is formed on the plate 115 and on which the molding material is outputted, as needed, without support.

That is, the 3D printer 100 according to the present invention may include a driving unit 400 that performs at least one of tilting the bed 115b in the first direction or tilting the second direction. Thus, when the angle of the molding shape is inclined with respect to the ground, the bed is tilted so that the molding material is stacked in the vertical direction with respect to the ground, so that the molding material can be stably formed without flowing down do.

That is, when the angle of the molding object is inclined with respect to the ground, the 3D printer 100 according to the present invention tilts the bed so that the molding material is stacked in parallel with the output direction of the extruded portion, It is possible to stably form the molding.

Meanwhile, the processor 170 in the 3D printer 100 may be configured such that when the angle of the molding shape to be formed is less than or equal to a reference angle within 90 [deg.] With respect to the ground, the bed 115b is at least in the first direction tilting or the second direction tilting One can be controlled to be performed.

Meanwhile, the processor 170 in the 3D printer 100 can control the movement order of the extrusion unit 300 to be variable when the angle of the molding shape to be formed is less than or equal to a reference angle of 90 degrees with respect to the ground.

On the other hand, the processor 170 in the 3D printer 100 can control the reference angle to vary according to the extrusion speed or temperature of the molding material.

As a result, when the angle of the molding object is inclined with respect to the ground, the molding material can be stably formed without flowing down.

Particularly, the processor 170 in the 3D printer 100 controls the bed 115b to be tilted in real time when the shape angle of the molding object changes in real time, so that the molding material does not flow down and stably forms a desired molding .

On the other hand, as for the mobile device 200a, In more detail  .

Figure 2 is a block diagram of the mobile device in the 3D printer of Figure & Example It is a perspective. .

Referring to the drawings, the mobile device 200a includes a support base 113, a plate 115 disposed on the support base 113, a plate 115 disposed on one side of the support base 113 and extending in a direction intersecting the support base 113, A first guide portion 116a and a second guide portion 116b extending in the direction of the first guide portion 116a and an elevation shaft 117 between the second guide portion 116a and the second guide portion 116b.

The moving device 200a includes a first guide portion 116a and a second guide portion 116b and a drive motor 251 for driving the z axis and disposed on the elevation shaft 117, A steel plate 252 may be provided. The drive motor 251 is disposed on the lift plate 252 and the first guide portion 116a, the second guide portion 116b, and the elevation shaft 117 are rotated by the operation of the drive motor 251 Accordingly, the drive motor 251 and the lift plate 252 can move in the z-axis direction.

On the other hand, the drive motor 251 for driving the z-axis and the lift plate 252 may be referred to as a second moving unit 220 that is responsible for z-axis movement in the moving apparatus 200a.

On the other hand, on the upper side of the drive motor 251 and the lift plate 252, a frame 215 extending in the y-axis direction and a frame 215 extending in the x- an arm 225 is disposed.

The moving device 200a includes driving motors 212 and 214 disposed at both ends of the frame 215 on the frame 215 and timing pulleys 211 and 213 connected to the motors 212 and 214 Respectively.

On the other hand, the moving device 200a includes idlers 216a, 216b, 216c, and 216d disposed on the arm 225 in regions where the arm 225 and the frame 215 cross each other, The carriage 280 includes idlers 216e, 216f and 216g disposed at both ends of the carriage 280 and a plurality of idlers 216a to 216g and timing pulleys 211 and 213, And a timing belt 217 for transmitting the driving force of the driving motor 212, 214.

The timing belt 217 includes a first timing pulley 211 attached to the first drive motor 212, idlers 216a, 216f and 216d, a second timing pulley (not shown) attached to the second drive motor 214, 213, idlers 216c, 216g, 216b, and a first timing pulley 211 attached to the first drive motor 212. [

The moving direction and the moving speed of the timing belt 217 and the like are determined in accordance with the rotational direction and the rotational speed of the first driving motor 212 and the second driving motor 214. Accordingly, The arm 225 can move in the y axis direction and the carriage 280 mounted on the arm 225 can move in the x axis direction.

More specifically, when the first drive motor 212 and the second drive motor 214 rotate in the same direction, the moving device 200a of FIG. 2 moves the arm 225 in the moving device 200a to the y- The moving device 200a of Fig. 2 moves the carriage 200a of the carriage 200 disposed in the arm 225 in the moving device 200 when the first driving motor 212 and the second driving motor 214 are rotated in opposite directions, (280) moves along the x-axis. This will be described later with reference to Figs. 7A to 7H.

On the other hand, the drive motors 212 and 214 for driving the x and y axes, the frame 215, the arm 225, the carriage 280, the idlers 216a to 216g, the timing pulleys 211 and 213, 217, and the like may be referred to as a first moving unit 210 that is responsible for x- and y-axis movement in the mobile device 200a.

The first moving part 210 includes a frame 215 extending in a first direction and a frame 215 extending in a second direction intersecting the frame 215 and the carriage 280 is disposed First and second driving motors 212 and 214 disposed on the frame 215 and spaced apart from each other; timing pulleys 211 and 213 connected to the first and second driving motors 212 and 214; A plurality of idlers 216a to 216g disposed on the arm 225 and a timing belt 217 extending through the timing pulleys 211 and 213 can be provided.

On the other hand, when the first and second driving motors 212 and 214 rotate in the same direction, the first moving unit 210 moves the arm in the first direction, and the first and second driving motors 212 and 214 are opposite The carriage 280 on the arm moves in the second direction

 On the other hand, when any one of the first and second driving motors 212 and 214 is operated, the first moving unit 210 moves the carriage 280 in the second direction while moving the arm in the first direction.

On the other hand, by the operation of the drive motor 251, the frame 215, the arm 225, the carriage 280, etc. as well as the drive motor 251 and the lift plate 252 can move in the z- .

On the other hand, the extrusion portion 300 is attached to the carriage 280 disposed on the arm 225. On the other hand, it is also possible that a bracket (not shown) is connected between the carriage 280 and the extrusion portion 300, unlike the drawing.

On the other hand, unlike the drawing, the second drive unit 220 can move the plate 115 in the z-axis direction without moving the drive motor 251 and the lift plate 252.

According to the mobile device 200a according to the embodiment of the present invention, the carriage 280 can be moved on the x, y plane by using the single arm 225 structure. In particular, The x-axis and y-axis movements can be simultaneously performed by the operation of at least one of the drive motors. This makes it possible to form the surface shape more smoothly at the time of producing the molding.

Meanwhile, according to the embodiment of the present invention, it is preferable that a bed 115b is formed in the plate 115, and the bed 115b can be tilted. In particular, it is preferable that the bed 115b can be inclined with respect to the ground, depending on the angle of the molding shape to be formed. This will be described with reference to Figs. 3A to 3B.

Figures 3a-3b illustrate various examples of the bed of Figure 2 All.

First, FIG. 3A illustrates a bed 115b capable of tilting in the first direction and tilting in the second direction.

Referring to the drawings, a 3D printer 100 includes a plate 115, first direction rotating shafts 115ap1 and 115ap2 connected to the plate 115, and first direction rotating shafts 115ap1 and 115ap2, A first rotating part 115a which can be tilted in one direction and a second direction rotating shaft 115bp1 or 115bp2 which is connected to the first rotating part 115a.

The bed 115b of FIG. 3a is connected to the second direction rotating shafts 115bp1 and 115bp2 and is tilted in the first direction by the rotation of the first direction rotating shafts 115ap1 and 115ap2 or the second direction rotating shafts 115bp1 and 115bp2, The second direction can be tilted.

The first direction rotating shafts 115ap1 and 115ap2 and the second direction rotating shafts 115bp1 and 115bp2 are connected to the first driving unit 410 of Fig. 6 and the second driving unit of Fig. 6 420, respectively.

Next, FIG. 3B illustrates a first direction tilting bed 115b.

Referring to the drawings, a 3D printer 100 includes a plate 115, first direction rotating shafts 115ap1 and 115ap2 connected to the plate 115, and first direction rotating shafts 115ap1 and 115ap2, And may include a bed 115b0 that can be tilted in one direction.

That is, the bed 115b of FIG. 3B is connected to the first direction rotating shafts 115ap1 and 115ap2, and can be tilted in the first direction by the rotation of the first direction rotating shafts 115ap1 and 115ap2.

On the other hand, the first direction rotating shafts 115ap1 and 115ap2 can be rotated by the first driving portion (410 in Fig. 6) in the driving portion (400 in Fig. 6).

Next, FIG. 3C illustrates a second direction tiltable bed 115b.

Referring to the drawings, the 3D printer 100 may include a plate 115 and a second direction rotating shaft 115bp1, 115bp2 connected to the plate 115. [

That is, the bed 115b of FIG. 3c is connected to the second direction rotating shafts 115bp1 and 115bp2, and can be tilted in the second direction by the rotation of the second direction rotating shafts 115bp1 and 115bp2.

On the other hand, the second direction rotating shafts 115bp1 and 115bp2 can be rotated by the second driving unit (420 in Fig. 6) in the driving unit (400 in Fig. 6).

Figures 4A to 4C illustrate an example of sculpture creation.

First, FIG. 4A illustrates a sculpture 907 to be generated.

On the other hand, when the angle of the shape of the molding 907 is 45 degrees as shown in the drawing, that is, when the angle is less than or equal to the reference angle of 90 degrees with respect to the ground, the molding material in the vicinity of the inclined surface flows .

In order to prevent this, conventionally, as shown in FIG. 4B, a provisional molding (support) 908, 909 for slope support is formed in the vicinity of an inclined surface inclined to the ground, When generating, support was separated.

However, according to this support method, when the support is separated, the surface is not smoothly separated.

On the other hand, FIG. 4C illustrates an arrangement sequence of the molding material when the molding 907 shown in FIG. 4A is generated. To this end, the extrusion portion 300 is moved in accordance with the arrangement order of the molding materials.

In the drawing, reference numeral 911 denotes a sculpture area, and reference numeral 912 denotes a support area. In the future, when the final sculpture is produced, the support area 912 is separated.

Referring to FIG. 4C, in the case of producing a molding having an inclination angle in a support manner, the extrusion portion 300 firstly outputs the first to seventh molding materials to the first layer horizontal to the paper surface Then, the molding materials of the eighth to thirteenth are output to the second layer on the first layer, and the molding materials of the fourteenth to eighteenth are output to the third layer on the second layer, And the shaping materials of the nineteenth through twenty-second are output to the fourth layer on the three-layer.

Figs. 5A to 5C illustrate examples of sculptural creation of a 3D printer according to an embodiment of the present invention.

In order to create the sculpture 907 as shown in FIG. 4A, In the 3D printer 100 according to the embodiment of the present invention, The bed 115b is tilted according to the angle of the molding shape.

For example, when the angle of the molding shape is 45 degrees, the processor 170 rotates the first direction rotation shaft 115ap1, 115ap2 as shown in the figure so that the bed 115b is inclined by 45 degrees in the leftward direction Can be controlled.

As a result, the molding material is vertically stacked on the inclined angle area 907s so that the molding material does not flow down.

That is, since the molding material is output in the vertical direction with respect to the ground surface in the extrusion portion 300, the molding material does not flow out.

Fig. 5B illustrates an arrangement sequence of the molding material when the molding 907 shown in Fig. 5A is produced. To this end, the extrusion portion 300 is moved in accordance with the arrangement order of the molding materials.

In the drawing, reference numeral 922 denotes a sculpture area. In particular, unlike FIG. 4C, since there is no support area, the surface of the molding can be formed more smoothly.

Referring to FIG. 5B, in the case of creating a molding having an inclination angle without support, the extrusion portion 300 firstly outputs the first molding material in the vertical direction to the first layer, 170 controls the bed 115b to be inclined at an angle of 45 degrees with respect to the paper surface direction, then outputs the second to third molding materials on the second layer, and the third layer on the second layer The seventh to the tenth molding materials are outputted on the fourth layer on the third layer, and on the fifth layer on the fourth layer, Outputting the molding materials of the eleventh to thirteenth, outputting the molding materials of the fourteenth to fifteenth on the fifth layer on the fourth layer, outputting the molding material of the sixteenth layer on the fifth layer, The second molding material is output.

Then, the processor 170 controls the bed 115b to be positioned horizontally with the ground direction.

In this way, while the inclined angle of the bed 115b is adjusted, the shaping materials are sequentially stacked in the vertical direction, so that they do not flow down from the inclined surfaces of the molding material.

4C and FIG. 5B, the processor 170 can control the movement order of the extrusion unit 300 to be variable when the angle of the formed shape is less than or equal to the reference angle of 90 DEG with respect to the ground have.

6 is an internal block diagram of the 3D printer of FIG.

Referring to the drawings, the 3D printer 50 includes an external device interface unit 130, a network interface unit 120, a memory 140, a processor 170, a display 180, a power supply unit 195, (200), an extrusion unit (300), and a driving unit (400).

The input unit 110 transmits a signal input by the user to the processor 170. To this end, an operation button or the like may be provided. For example, the power-on signal, the start signal by the start button, the pause signal by the pause button, and the like may be transmitted to the processor 170 by the power-on button.

The network interface unit 120 provides an interface for connecting the 3D printer 50 to a network by a wire / wireless data communication method. For example, the network interface unit 120 provides an interface connectable to a mobile terminal, a PC, and the like, and thus can exchange data with a mobile terminal, a PC, or the like. In addition, data can be exchanged with an external server (not shown) via a network. On the other hand, various data communication methods such as Bluetooth, WiFi Direct, WiFi, DLNA and APiX are available as the wireless data communication method.

For example, through the network interface unit 120, a 3D graphic image for 3D sculpture creation can be received from a PC or a mobile terminal connected to a wire or wirelessly.

The external device interface unit 130 provides an interface for exchanging data with an external device via input terminals such as USB and HDMI. For example, a 3D graphic image for 3D sculpture creation can be received from a USB storage device, which is an external device, via a USB terminal.

The memory 140 may store a program for each signal processing and control within the processor 170 and may also store signal processed video, audio, or data signals.

In addition, the memory 140 may perform a function for temporarily storing video, audio, or data signals input from the external device interface unit 130.

The processor 170 can control each unit in the 3D printer 50. [

The processor 170 is connected to the mobile device 200 and the extruder (not shown) to generate a 3D sculpture based on the 3D graphic image input from the network interface unit 120 or the external device interface unit 130 300 can be controlled.

Specifically, the processor 170 may control the first drive motor 212 and the second drive motor 214 such that the mobile device 200 is moved in the x and y axes, as shown in Figures 7A through 7H . That is, the first driving motor 212 and the second driving motor 214 in the first moving unit 210 can be controlled.

For example, the processor 170 may rotate the first and second driving motors 212 and 214 in the same direction to move the arm 225 in the first direction, and the first and second driving motors 212 and 214 212 and 214 rotate in the opposite direction so that the carriage 280 on the arm 225 can move in the second direction.

As another example, the processor 170 may operate either the first and second drive motors 212 and 214 to move the carriage 280 in the second direction while moving the arm 225 in the first direction .

The processor 170 can also control the driving motor 251 in the second moving part 220 so that the moving device 200 is moved in the z axis.

On the other hand, the processor 170 can control the filament moving speed and the like in the extruder 300. The moving speed of the filament can be determined according to the temperature of the extruding part 300. [ For example, the higher the temperature, the greater the speed of movement.

The processor 170 controls the filament moving part 310, the heating part 320 and the cooling part 330 in the extrusion part 300 in order to control the filament moving speed and the like in the extruder 300. [ And so on.

The processor 170 receives the sensed temperature from the first temperature sensing unit 325 that senses the temperature of the heating unit 320 and senses the temperature of the cooling unit 330, It is possible to receive the sensed temperature from the sensor 335.

The processor 170 may control the heating unit 320 and the cooling unit 330 based on the first temperature sensing unit 325 and the second temperature sensing unit 335. [

For example, the processor 170 controls the heating unit 320 to rise to the target heating temperature, and controls the cooling unit 330 to be lowered to the target cooling temperature.

On the other hand, when the temperature of the cooling section 330 is equal to or higher than the target cooling temperature, the processor 170 can temporarily lower the target heating temperature.

On the other hand, the processor 170 can stop the operation of the filament moving unit 310 when the temperature of the second temperature sensing unit 335 is higher than a predetermined value.

At least one of the heating unit 320 and the cooling unit 330 may be provided so that the difference between the temperature of the first temperature sensing unit 325 and the temperature of the second temperature sensing unit 335 is within a predetermined range, .

Meanwhile, the processor 170 may control the moving speed of the filament moving part 310 to decrease as the temperature of the heating part 320 increases. Specifically, when the heating unit 320 rises above the target heating temperature, the moving speed of the filament is excessively increased, so that the processor 170 can temporarily control the moving speed of the filament moving unit 310 to be reduced have.

Alternatively, the processor 170 may control the temperature of the cooling unit 330 to decrease as the temperature of the heating unit 320 increases. Specifically, the processor 170 temporarily controls the temperature of the cooling unit 330 to decrease as the temperature of the heating unit 320 increases, in order to reduce heat transmitted to the filament moving unit 310 .

Meanwhile, when there is a sleep mode input, the processor 170 controls the pushing unit 300 to move to the maintenance area to perform the maintenance operation. After the maintenance operation, the processor 170 moves the pushing unit 300 to the origin , It can be controlled to operate in the power saving mode. As a result, it is possible to stably stop the operation in response to the sleep mode input.

If there is a sleep mode input, the processor 170 controls the temperature of the heating unit 320 and the temperature of the cooling unit 330 to be the target temperature after the maintenance operation is performed, , It is possible to control the origin moving operation to be performed.

The processor 170 moves the carriage 280 to generate a predetermined molding based on the data received through the interface unit 120 or 130 and transmits the data communication through the interface unit 120 or 130 The controller controls the pushing unit 300 to move to the maintenance area to perform the maintenance operation. After the maintenance operation is performed, the pushing unit 300 is moved to the origin, . As a result, the data communication can be stably stopped in response to the pause.

On the other hand, when the supply of the filament to be introduced is terminated, the processor 170 may control the operation of the extrusion unit 300 to operate in the power saving mode after moving the extrusion unit 300 to the origin. Thus, it is possible to stably stop the operation of the filament in response to termination of the supply of the filament.

On the other hand, when the feeding of the filament is terminated, the processor 170 controls the heating unit 320 and the cooling unit 330 so that the temperature of the heating unit 320 becomes the target temperature after the movement of the origin, Can be controlled.

 On the other hand, when there is a sleep mode input, the processor 170 controls the display to output a message to the display indicating whether abnormality can occur in the molding produced by the filament, and outputs a message indicating whether the sleep mode is proceeded to the display Can be controlled.

On the other hand, the processor 170 may control the display to output a message indicating that the power saving mode is performed during the power saving mode.

Meanwhile, the processor 170 may control the bed 115b to perform at least one of a first direction tilting or a second direction tilting.

Meanwhile, the processor 170 may control the driving unit 400 so that the bed 115b is tilted with respect to the ground, according to the angle of the molding shape to be formed.

On the other hand, the processor 170 controls the bed 115b to perform at least one of the first direction tilting or the second direction tilting when the angle of the formed shape is less than or equal to the reference angle of 90 degrees with respect to the ground .

That is, when the angle of the molding object is less than or equal to a reference angle of 90 degrees with respect to the ground, the processor 170 controls the driving unit 400 so that the angle between the bed 151b and the extrusion unit 300 becomes an acute angle. Can be controlled.

Here, the reference angle may be set to approximately 75 degrees.

For example, when the angles of the molding objects to be formed are 45 degrees with respect to the ground, the vertical materials are not stacked with respect to the ground, so that the molding material sequentially stacked on the bed 195b flows in the direction of gravity .

Therefore, in the present invention, in order to solve such a problem, the processor 170 controls the bed 115b to tilt at an angle of 45 degrees, which corresponds to the angle of the molding shape, with respect to the ground. As a result, the bed 195b is inclined at an angle of 45 DEG with respect to the ground, so that the molding material is stacked vertically, and therefore, does not flow in the direction of gravity.

As another example, when the angle of the molding shape to be formed is 60 degrees with respect to the ground, the processor 170 controls the bed 115b to tilt to 60 degrees, which is an angle corresponding to the angle of the molding shape, do. As a result, the bed 195b is inclined at 60 占 with respect to the ground, so that the molding material is vertically stacked, and therefore, does not flow in the direction of gravity.

Meanwhile, the processor 170 can control the movement order of the extrusion unit 300 to be variable when the angle of the shape of the molding object is less than or equal to the reference angle of 90 degrees with respect to the ground.

As described above, in the case of the support system, since the bed 115b is tilted without support in the present invention, the bed 115b is positioned parallel to the ground plane , The shaping material is outputted while the bed 115b is positioned so as to be inclined to the ground and then the shaping material is discharged and then the shaping material Can be output.

Accordingly, the processor 170 can control the movement sequence of the extrusion unit 300 to be variable, unlike the support system or the like, depending on the angle of the molding shape to be formed.

On the other hand, the processor 170 can control the reference angle to vary according to the extrusion speed or temperature of the molding material.

On the other hand, the processor 170 can be set such that the higher the extrusion speed of the molding material or the higher the temperature, the larger the reference angle.

For example, when the extrusion speed of the molding material is the first speed or the temperature is the first temperature, the processor 170 can set the reference angle, which is an angle at which the molding material does not flow, to approximately 75 degrees.

As another example, if the extrusion rate of the molding material is a second rate that is faster than the first rate or if the temperature is a second temperature that is higher than the first temperature, the molding material will flow down better, Can be set to be larger. For example, it can be set approximately to about 80 degrees. As a result, the molding can be stably produced.

On the other hand, when the bed 115b is in a state in which at least one of the first direction tilting and the second direction tilting is performed, then, when the angle of the shape of the molding object to be formed is over the reference angle, The bed 115b can be controlled to be parallel to the ground.

On the other hand, when the angle of the shape of the molding object to be formed is larger than the reference angle, the molding material does not flow in the gravity direction, so that the processor 170 can control the bed 115b to be parallel to the ground .

The display 180 may display information relating to the operation of the 3D printer 100. For this image display, the display 180 may be implemented as a PDP, an LCD, an OLED, or the like.

The power supply unit 195 can supply power necessary for the operation of each component under the control of the processor 170. [ In particular, it is possible to supply power to a processor 170, which may be implemented as a system on chip (SOC), a display 180 for information display, and the like. To this end, the power supply unit 195 may include a converter that receives the AC power and converts the DC power into a DC power, and a dc / dc converter that converts the level of the DC power.

The mobile device 200 can move the extrusion part 300. 2, when the extrusion part 300 is attached to the carriage 280, the moving device 200 moves the carriage 280, and the extrusion part 300 moves the carriage 280, As shown in FIG.

On the other hand, the mobile device 200a of FIG. 2 is a mobile device based on x and y axis movement, and the 3D printer 100 according to an embodiment of the present invention can employ various types of mobile devices.

That is, the mobile device 200 of the 3D printer 100 according to another embodiment of the present invention may be a mobile device 200b of a delta (?) Robot type in the manner of FIGS. 10 to 11.

The mobile device 200b of the delta (?) Robot system may have three carriages 280a, 280b, and 280c each capable of three-dimensional movement. One extruded portion 300 connected to the three carriages 280a, 280b and 280c can move in three dimensions within the space by moving each of the three carriages 280a, 280b and 280c.

Meanwhile, the driving unit 400 may perform at least one of tilting the bed 115b in the first direction or tilting the second direction.

For example, when the bed 115b is tilted in the first direction by the first direction rotating shaft or tilted in the second direction by the second direction rotating shaft, the driving unit 400 includes a first A driving unit 410, and a second driving unit 420 for tilting the second direction rotating shaft

The driving unit 400 can tilt the bed 115b in the first direction or tilt in the second direction according to the operation of the first driving unit 410 or the second driving unit 420. [

7A To  7h is an explanation of the operation of the mobile device of Fig. 2 Referenced  FIG.

7A to 7B illustrate that the carriage 280 moves in the x-axis direction.

First, FIG. 7A illustrates that the carriage 280 advances when the first drive motor 212 rotates right and the second drive motor 214 turns left. That is, the carriage 280 is moved in the opposite direction to the frame 215. [

7B illustrates that the carriage 280 is reversed when the first drive motor 212 makes a left turn and the second drive motor 214 makes a right turn. That is, it is illustrated that the carriage 280 moves in the direction of the frame 215.

Next, FIGS. 7C to 7D illustrate the movement of the arm 225 in the y-axis.

First, FIG. 7C illustrates that the arm 225 moves to the left when the first drive motor 212 and the second drive motor 214 make a right turn. That is, it is illustrated that the arm 225 moves in the direction of the first drive motor 212.

7D illustrates that the arm 225 moves to the right when the first drive motor 212 and the second drive motor 214 make a left turn. That is, the arm 225 is moved in the direction of the second drive motor 214. [

Next, FIGS. 7E to 7H illustrate that the carriage 280 is moved in the x-axis and the arm 225 is moved in the y-axis.

First, Fig. 7E illustrates that the carriage 280 moves in the upper right direction when the first drive motor 212 makes a left turn and the second drive motor 214 stops. That is, the arm 225 is moved to the right side, and the carriage 280 is moved backward. As a result, the carriage 280 moves in the direction of approximately 45 degrees.

Next, FIG. 7F illustrates that the carriage 280 moves in the lower-right direction when the first drive motor 212 is stopped and the second drive motor 214 is rotated left. That is, the arm 225 is moved to the right side, and the carriage 280 is advanced. As a result, the carriage 280 moves in the direction of approximately 135 degrees.

7G illustrates that the carriage 280 moves in the lower left direction when the first drive motor 212 makes a right turn and the second drive motor 214 stops. That is, the arm 225 moves to the left side, and the carriage 280 moves forward. As a result, the carriage 280 moves in the direction of approximately 225 degrees.

7H illustrates that the carriage 280 moves in the upper left direction when the first drive motor 212 stops and the second drive motor 214 makes a right turn. That is, the arm 225 moves to the left side, and the carriage 280 moves backward. As a result, the carriage 280 moves in the direction of about 315 degrees.

In the meantime, according to the mobile device 200 according to the embodiment of the present invention, the carriage 280 can be moved on the x, y plane by using the single arm 225 structure. Particularly, The x-axis and y-axis movements can be simultaneously performed by the operation of at least one of the two drive motors, such as 7h. This makes it possible to form the surface shape more smoothly at the time of producing the molding.

8 is an example of the extruding portion of Fig.

Referring to the drawings, an extruder 300 attached to a carriage 280 includes a filament moving part 310 for moving a filament to be introduced downward, a filament moving part 310 for moving a filament moving part 310, A nozzle 340 for outputting the heated filament into the cavity 50 and a filament moving unit 350 for heating the filament by the heating unit 320 to the filament moving unit 310 or the vicinity thereof, And a cooling unit 330 for cooling the unit 310.

The extruder 300 includes a first temperature sensing unit 325 for sensing the temperature of the heating unit 320 and a second temperature sensing unit 335 for sensing the temperature of the cooling unit 330. [ As shown in FIG.

The filament moving unit 310 includes a driving motor 312 and a gear 314a that is operated by the driving motor 312 so as to move the filament 10 to be introduced in a downward direction, , And 314b. By the rotation of the gears 314a and 314b, the solid state filament 10 on the moving path is moved in the downward direction.

On the other hand, the heating unit 320 heats the filament transferred by the filament moving unit 310. To this end, the fitting portion 320 may include a heater (not shown) and a heater driving portion (not shown). Meanwhile, a first temperature sensing unit 325 for sensing the temperature of the heating unit 320 may be provided in the heating unit 320. The sensed temperature is communicated to the processor 170.

On the other hand, the nozzle 340 outputs the filament heated in the heating part 320 into the cavity 50. Particularly, as described above, it is possible to generate a molding of a predetermined shape in accordance with the movement of the carriage 280 along the x- and y-axes.

On the other hand, the operation speed of the filament moving part 310 and the like are also important for supplying the filament quickly, but cooling of the filament moved by the operation of the filament moving part 310 is also an important factor.

It is preferable that the cooling unit 330 is provided so that heat is not transmitted to the filament moving unit 310 or the vicinity thereof by heating of the heating unit 320.

The cooling unit 330 may include a heat radiating member 334 contacting the filament moving unit 310 and a cooling fan 332 for cooling the heat radiating member.

The cooling fan 332 operates by driving the processor 170 and the air flow path by the operation of the cooling fan 332 can be formed in the direction of the heat radiation member 334. The heat radiating member 334 may include a heat radiating plate.

The cooling unit 330 may further include a base unit 337 contacting the heating unit 320. The base portion 337 may be disposed on the upper portion of the heating portion 320 and on the heat radiating member 334 and the cooling fan 332.

On the other hand, the base portion 337 can be formed of a metal material having high thermal conductivity. For example, it may be formed of an aluminum material.

A second temperature sensing unit 335 senses the temperature of the cooling unit 330. The second temperature sensing unit 335 senses the temperature of the cooling unit 330. The second temperature sensing unit 335 senses the temperature of the cooling unit 330, (Not shown).

Specifically, the second temperature sensing unit 335 may be disposed on the base unit 337. Then, the sensed temperature is transmitted to the processor 170.

The processor 170 controls the heating unit 320 to rise to a target heating temperature based on the temperature sensed by the first temperature sensing unit 325 and controls the temperature sensed by the second temperature sensing unit 335 The cooling unit 330 can be controlled to be lowered to the target cooling temperature.

Specifically, the processor 170 controls the operation time of the heater (not shown) such that the heating portion 320 is raised to the target heating temperature. Then, based on the temperature sensed by the second temperature sensing unit 335, the operation time, the rotation speed, and the like of the cooling fan 332 are controlled so that the cooling unit 330 is lowered to the target cooling temperature.

The processor 170 controls the heating unit 320 to maintain the target heating temperature based on the first temperature and the second temperature that are continuously sensed and controls the cooling unit 330 to maintain the target cooling temperature or lower .

The processor 170 may temporarily disable the heater (not shown) temporarily when the heating unit 320 maintains the target heating temperature. For example, when the target heating temperature is maintained for the first period, the heater (not shown) may be temporarily not operated.

On the other hand, the processor 170 may temporarily stop the operation of the cooling fan 332 when the cooling unit 330 holds the target cooling temperature for the second period.

On the other hand, when the temperature of the cooling section 330 is equal to or higher than the target cooling temperature, the processor 170 can temporarily lower the target heating temperature.

Alternatively, the processor 170 may stop the operation of the filament moving unit 310 when the temperature of the cooling unit 330 is higher than or equal to the target cooling temperature for a predetermined time or longer. When the temperature of the cooling unit 330 is again equal to or lower than the target cooling temperature after a predetermined time, it is possible to control the operation of the filament moving unit 310 to operate.

The processor 170 determines whether the difference between the temperature of the first temperature sensing unit 325 and the temperature of the second temperature sensing unit 335 is within a predetermined range At least one of the heating unit 320 and the cooling unit 330 can be controlled.

Meanwhile, the processor 170 may control the moving speed of the filament moving part 310 to decrease as the temperature of the heating part 320 increases. Specifically, when the heating unit 320 rises above the target heating temperature, the moving speed of the filament is excessively increased, so that the processor 170 can temporarily control the moving speed of the filament moving unit 310 to be reduced have.

Alternatively, the processor 170 may control the temperature of the cooling unit 330 to decrease as the temperature of the heating unit 320 increases. Specifically, the processor 170 temporarily controls the temperature of the cooling unit 330 to decrease as the temperature of the heating unit 320 increases, in order to reduce heat transmitted to the filament moving unit 310 .

As a result, the first and second temperature sensing units 325 and 335, which sense the temperature of the heating unit 320 and the temperature sensing unit 335, respectively, And the cooling unit 33, it is possible to stably improve the output speed of the filament. Therefore, when the 3D printer 100 is used to generate the sculpture, the generation time can be shortened.

FIG. 9 is a cross- Of the extruded portion  Another example.

9 is similar to that of the extrusion unit 300 of FIG. 8, except that the bridges 336a and 336b are further provided in the cooling unit 300. FIG.

More specifically, bridges 336a and 336b are further provided between the base 337 and the cooling fan 332 and the heat radiating member 334 so that the base 337 and the cooling fan 332 and the radiating member 334 Are separated from each other without being in contact with each other.

The second temperature sensing unit 335 is disposed in the base unit 337. The processor 170 includes a first temperature sensing unit 325 sensing the temperature of the heating unit 320, And a second temperature sensing unit 335 that senses the temperature of the cooling unit 330 to control the heating unit 320 and the cooling unit 33, respectively. Therefore, the output speed of the filament can be stably improved. Therefore, when the 3D printer 100 is used to generate the sculpture, the generation time can be shortened. The heat of the heating portion 320 is further reduced by the bridges 336a and 336b by the filament moving portion 310 or the like.

Fig. 10 is a perspective view showing another example of the inside of the 3D printer of Fig. 1, and Fig. 11 illustrates an example of creation of a sculpture of the 3D printer of Fig.

Referring to the drawings, the moving device 200 of the 3D printer 100 according to another embodiment of the present invention may be a moving device 200b of the delta (Δ) robot type in the manner of FIGS. 10 to 11.

The mobile device 200b of the delta (?) Robot system may have three carriages 280a, 280b, and 280c each capable of three-dimensional movement. One extruded portion 300 connected to the three carriages 280a, 280b and 280c can move in three dimensions within the space by moving each of the three carriages 280a, 280b and 280c.

On the other hand, the three carriages 280a, 280b and 280c can be moved three-dimensionally in the space by a timing pulley (not shown) connected to each motor (not shown).

On the other hand, the 3D printer 100 provided with the moving device 200b of the delta (Delta) robotic method according to the method of Figs. 10 to 11 is configured such that the bed 115b is inclined with respect to the ground according to the angle of the shape of the molding object A bed 115b may be provided.

That is, as described above, the driving unit 400 can perform at least one of the bed 115b in the first direction tilting or the second direction tilting. The description thereof will be omitted with reference to the above description.

Fig. 12 is a cross- In the embodiment  Of the 3D printer according to the present invention It's a flowchart. , Fig. 13A To  13c is a description of the operation method of Fig. 12 Referenced  FIG.

Referring to the drawing, the processor 170 of the 3D printer 100 determines whether the 3D printing mode is in operation (S1210), and controls the output of the molding material by moving the extrusion unit 300 S1215).

13A shows a state in which the molding material is output from the extrusion portion 300 and the first molding region 1307a is formed on the bed 115b in a state where the bed 115b is positioned parallel to the paper at a first time point Are formed.

Next, the processor 170 of the 3D printer 100 determines whether or not the angle of the molding shape to be formed is less than or equal to a reference angle within 90 [deg.] With respect to the ground (S1220) (S1225).

That is, the processor 170 of the 3D printer 100 controls the bed 115b such that at least one of the first direction tilting (rolling) and the second direction tilting (pitching) is performed .

The processor 170 of the 3D printer 100 controls the extrusion unit 300 to output the molding material in a state in which the bed 115b is tilted with respect to the ground (S1230).

13B shows a state in which the molding material is output from the extrusion portion 300 in a state in which the bed 115b is inclined at an angle of 45 DEG to the ground at the second time point, And a second molding area 1307b which is inclined in the area 1307a is formed.

13B, since the second molding area 1307b is inclined to the first molding area 1307a and the bed 115b is inclined to the left by 45 °, the second molding area 1307b is in a state in which, The molding material output from the extrusion portion 300 is formed in a stacked manner in a direction perpendicular to the paper surface.

Next, the processor 170 of the 3D printer 100 determines whether or not the angle of the molding shape to be formed exceeds the reference angle with respect to the ground (S1235). If the angle exceeds the reference angle, the bed 115b is made parallel to the ground (S12405).

The processor 170 of the 3D printer 100 controls the extrusion unit 300 to output the shaped material in a state in which the bed 115b is parallel to the paper surface again (S1245).

13C shows a state in which the molding material is output from the extrusion portion 300 and the first molding region 1307a is formed on the bed 115b in a state where the bed 115b is positioned in parallel again with the ground at the third time point. The third molding region 1307c is formed.

As described above, by controlling the bed 115b to be inclined with respect to the paper surface direction according to the angle of the molding object to be formed, the molding material is prevented from flowing due to gravity. Therefore, the inclined region can also stably produce a smooth molding.

Meanwhile, the operation method of the 3D printer of the present invention can be implemented as a code that can be read by a processor on a recording medium readable by a processor included in the 3D printer. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium that can be read by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet . In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

Claims (20)

Bed;
An extrusion unit for extruding the molding material on the bed;
A moving part for moving the extrusion part;
And a driving unit for performing at least one of tilting the bed in the first direction or tilting the second direction. The method according to claim 1,
And a processor for controlling the driving unit and the moving unit,
The processor comprising:
And controls the driving unit so that the bed is inclined with respect to the ground according to an angle of a molding shape to be formed. The method according to claim 1,
And a processor for controlling the driving unit and the moving unit,
The processor comprising:
Wherein the control unit controls the bed to perform at least one of the first direction tilting and the second direction tilting when the angle of the formed shape is less than or equal to a reference angle of less than 90 degrees with respect to the ground. The method of claim 3,
The processor comprising:
Wherein the controller controls the movement sequence of the extruding unit to be variable when the angle of the molding shape to be formed is equal to or less than the reference angle within 90 degrees with respect to the ground. The method of claim 3,
The processor comprising:
And controls the reference angle to vary according to the extrusion speed or temperature of the molding material. 6. The method of claim 5,
The processor comprising:
Wherein the setting is made such that the higher the extrusion speed of the molding material or the higher the temperature, the larger the reference angle. The method of claim 3,
The processor comprising:
Wherein when the bed is in a state in which at least one of the first direction tilting and the second direction tilting is performed and then the angle of the shape of the molding object to be formed is larger than the reference angle with respect to the ground, So as to control the operation of the 3D printer. The method according to claim 1,
plate;
A first direction rotating shaft connected to the plate;
A first rotating part connected to the first direction rotating shaft and tiltable in a first direction;
And a second rotation axis connected to the first rotation unit,
The bed comprises:
Wherein the second direction is connected to the second direction rotation axis and is tilted in the first direction by rotation of the first direction rotation axis or tilted in the second direction by rotation of the second direction rotation axis. The method according to claim 1,
plate;
A first direction rotating shaft connected to the plate;
The bed comprises:
And the second direction is connected to the first direction rotation axis, and is tilted in the first direction by rotation of the first direction rotation axis. The method according to claim 1,
And a carriage to which the extrusion part is attached,
Wherein the moving unit moves the carriage,
And the extrusion portion is moved by movement to the carriage. The method according to claim 1,
The extrusion portion
A filament moving part for moving the introduced filament downward;
A heating unit for heating the filament moved by the filament moving unit;
A nozzle for outputting the heated filament onto the bed;
A cooling unit for cooling the filament moving unit such that heat generated by the heating unit is reduced in the filament moving unit;
And a first temperature sensing unit for sensing a temperature of the heating unit. 12. The method of claim 11,
And a processor for controlling the driving unit and the moving unit,
The processor comprising:
Wherein the control unit controls the temperature of the heating unit to vary the output speed of the filament output from the extrusion unit. 12. The method of claim 11,
And a processor for controlling the driving unit and the moving unit,
The extrusion portion
And a second temperature sensing unit for sensing a temperature of the cooling unit,
The processor comprising:
And controls the temperature of the cooling unit to vary. The method according to claim 1,
Further comprising a processor for controlling the driving unit so that the angle between the bed and the extruding unit becomes an acute angle when the angle of the formed shape is less than or equal to a reference angle of 90 degrees with respect to the ground, . Bed;
An extrusion unit for extruding the molding material on the bed;
A moving part for moving the extrusion part;
A driving unit for driving the bed so as to be inclined with respect to the paper surface;
And a processor for controlling the driving unit and the moving unit, and controlling the driving unit such that the bed is inclined with respect to the ground direction according to an angle of a molding shape to be formed. 16. The method of claim 15,
The processor comprising:
Wherein the control unit controls the bed to perform at least one of tilting in the first direction and tilting in the second direction when the angle of the formed shape is less than or equal to a reference angle within 90 degrees with respect to the ground. 17. The method of claim 16,
The processor comprising:
Wherein the controller controls the movement sequence of the extruding unit to be variable when the angle of the molding shape to be formed is equal to or less than the reference angle within 90 degrees with respect to the ground. 17. The method of claim 16,
The processor comprising:
And controls the reference angle to vary according to the extrusion speed or temperature of the molding material. 19. The method of claim 18,
The processor comprising:
Wherein the setting is made such that the higher the extrusion speed of the molding material or the higher the temperature, the larger the reference angle. 17. The method of claim 16,
The processor comprising:
Wherein when the bed is in a state in which at least one of the first direction tilting and the second direction tilting is performed and then the angle of the shape of the molding object to be formed is larger than the reference angle with respect to the ground, So as to control the operation of the 3D printer.

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