KR20160003948U - Effector and three dimensional printer - Google Patents

Abstract

An effector capable of performing a simple and accurate auto-calibration operation and a three-dimensional printer including the same are provided. The effector comprising: a first plate; A second plate disposed below the first plate; A cold chamber disposed between the first plate and the second plate, the cold chamber transmitting a filament; And a nozzle unit disposed at a lower portion of the second plate and including a melting chamber connected to the cold chamber for melting and discharging the filament, wherein the nozzle unit includes a heat block, A nozzle for discharging the melted filament, and at least one of the heat block, the heating portion, and the nozzle, the heating block being electrically connected to the heat block, And a wire to which a signal is applied.

Description

Effector and three-dimensional printer including the same [0002] Effector and three dimensional printer [

The present invention relates to an effector and a three-dimensional printer including the same.

A three-dimensional printing or additive process forms a three-dimensional item (3D object) from three-dimensional data (e.g., a computer-aided design (CAD) model). 3D printing differs from a subtractive process such as cutting or drilling in that it forms items while continuously stacking the material layers.

Three-dimensional printing can be performed by various methods such as FDM (Fused Deposition Modeling), EBF ³ (Direct Metal Laser Sintering), DMLS (Selective Laser Sintering), LOM (Laminated Object Manufacturing), SLA have. Such 3D printing can be used in a great many fields such as prototyping, architecture, industrial design, automobile, aviation, engineering, education, jewelry, and fashion.

U.S. Published Patent Application No. US2012 / 0219698 (published on August 30, 2012)

The problem to be solved by the present invention is to provide an effector capable of performing an auto calibration operation simply and accurately.

A problem to be solved by the present invention is to provide a three-dimensional printer capable of performing an auto-calibration operation simply and accurately.

The tasks to be solved by the present invention are not limited to the above-mentioned tasks, and other tasks not mentioned may be clearly understood by those skilled in the art from the following description.

An aspect of the present invention for solving the above-mentioned problems is an effect plate comprising: a first plate; A second plate disposed below the first plate; A cold chamber disposed between the first plate and the second plate, the cold chamber transmitting a filament; And a nozzle unit disposed at a lower portion of the second plate and including a melting chamber connected to the cold chamber for melting and discharging the filament, wherein the nozzle unit includes a heat block, A nozzle for discharging the melted filament, and at least one of the heat block, the heating portion, and the nozzle, the heating block being electrically connected to the heat block, And a wire to which a signal is applied.

Alternatively, the nozzle unit may further include a heat sensor installed in the heat block and measuring a temperature of the heat block, wherein the electric wire is electrically connected to at least one of the heat block, the heat generating unit, the nozzle, And a signal for an auto-calibration operation can be applied.

Here, the signal may be a constant voltage.

Another aspect of the present invention for solving the above problems is a heat block; A heating unit installed in the heat block for melting filaments for three-dimensional printing; A nozzle installed in the heat block and discharging the molten filament; A heat sensor installed in the heat block for measuring a temperature of the heat block; And at least one of the heat block, the heating unit, the nozzle, and the thermal sensor, and a signal for an auto-calibration operation may be applied.

According to an aspect of the present invention, there is provided a three-dimensional printer comprising: a support to which a first voltage is applied; And an effector for forming a three-dimensional item on the support; And a controller for controlling the effector, wherein the effector includes a heat block, a heating unit installed in the heat block, for heating the filament for three-dimensional printing, and a heating unit installed in the heat block, And a wire to which a second voltage different from the first voltage is applied for an auto-calibration operation, the wire being electrically connected to at least one of the heat block, the heating unit, and the nozzle, Determines the positional relationship between the support and the effector by directly contacting the effector to a plurality of locations on the support.

According to another aspect of the present invention, there is provided a three-dimensional printer comprising: a support to which a first voltage is applied; And an effector for forming a three-dimensional item on the support; And a controller for controlling the effector, wherein the effector comprises: a nozzle for discharging the molten filament for three-dimensional printing; a conductor electrically connected to the nozzle; and a controller electrically connected to the conductor, And an electric wire to which a second voltage different from the first voltage is applied for operation, the controller directing the effector to a plurality of positions of the support to determine a positional relationship between the support and the effector.

Other specific details of the present invention are included in the detailed description and drawings.

The effect of the present invention and the three-dimensional printer can perform an auto calibration operation simply and accurately.

1 is a conceptual diagram for explaining a three-dimensional printer according to some embodiments of the present invention.
FIGS. 2, 3, 5 to 9 and 11 are a perspective view, a left side view, a front view, a right side view, a rear view, a plan view, a bottom view, and an exploded perspective view, respectively, of an effector according to some embodiments of the present invention.
4 is a diagram for explaining an effect of an effector according to some embodiments of the present invention.
10 is a cross-sectional view for explaining a form in which an isolator, an insulator, and a nozzle are combined.
12 is a view for explaining a form in which an effector according to some embodiments of the present invention is combined with a rod.
13 is a view showing the nozzle unit of Fig. 11 in more detail.
Figs. 14 and 15 are diagrams for explaining the auto-calibration operation. Fig.
Figs. 16 and 17 are views for explaining a portion where the effector comes into contact with the support frame in the auto-calibration operation. Fig.
18 and 19 are a perspective view and a front view, respectively, of a three-dimensional printer according to some embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. Is provided to fully inform the owner of the category of design, and the design is only defined by the scope of the claim. Like reference numerals refer to like elements throughout the specification.

One element is referred to as being "connected to " or" coupled to "another element, either directly connected or coupled to another element, One case. On the other hand, when one element is referred to as being "directly connected to" or "directly coupled to " another element, it does not intervene another element in the middle. Like reference numerals refer to like elements throughout the specification. "And / or" include each and every combination of one or more of the mentioned items.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. It is, of course, also possible that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the spirit of the present invention.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense that is commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

1 is a conceptual diagram for explaining a three-dimensional printer according to some embodiments of the present invention.

Referring to FIG. 1, a three-dimensional printer according to some embodiments of the present invention includes a controller 20, a support 140, an effector 10, a nozzle 192, a source providing unit 30, .

The support member 140 is a space for forming the three-dimensional item 191. The support base 140 may be fixed or may be moved or rotated under the control of the controller 20. [ In addition, the support table 140 may gently adhere the three-dimensional item 191 to the support 140 to stably secure the three-dimensional item 191. Alternatively, heat may be applied to the support 140 (i.e., serve as a heat bed).

The source supply 30 may supply a source material to the nozzle 192. For example, the source material may be in the form of a filament. Alternatively, the source material may be in the form of a pellet, a powder, or a liquid plastic, and is not limited to a specific form. When the source material has a filament shape, the source providing portion 30 may be in the form of a holder in which filaments are wound.

The source (i.e., the filament) is transferred to the effector 10 through the tube 31.

The effector 10 melts the transferred filament and discharges the melted filament through the nozzle 192 onto the support base 140.

The controller 20 can control the support 140, the source providing unit 30, the effector 10, and the like.

Further, the controller 20 can process the source data related to the three-dimensional item 191 to be printed, that is, three-dimensional data. The three-dimensional data can be sliced into a plurality of two-dimensional data (i.e., data for creating a layer). Here, the three-dimensional data includes (x, y, z) coordinate values, and the two-dimensional data refers to (x, y) coordinate values having no z value. Here, since the z value is fixed to a constant value, the two-dimensional data does not include the z value.

The source data may be directly input by the user to the three-dimensional printer, or may be data stored in a server, a terminal (for example, a personal computer, a notebook, another three-dimensional printer, etc.) have.

The manner in which the effector 10 (i.e., the nozzle 192) operates is not limited to a specific method. For example, when the effector 10 wishes to move from point A to point B, the effector 10 may move linearly along the x axis or linearly along the y axis according to a linear operating method have.

Alternatively, the effector 10 may be driven according to a delta operating method. The delta driving scheme is, for example, such that the effector 10 is connected via three (or three) pairs of rods (or delta arms) to three (or three) pairs of axes, respectively . The effector 10 can freely move in the x-axis, the y-axis, the diagonal direction, etc. according to the movement of three (or three) pairs of rods.

Assuming that the distance between point A and point B is d in the x-axis direction, the effector 10 moves in the x-axis direction by d for 3 hours in the linear drive system. However, in the delta driving mode, the effector 10 can move by d for, for example, t hours. This is because the effector 10 can move a lot even if three loads move a little.

Hereinafter, an effector according to some embodiments of the present invention will be described with reference to Figs. 2 to 11. Fig. FIGS. 2, 3, 5 to 9 and 11 are a perspective view, a left side view, a front view, a right side view, a rear view, a plan view, a bottom view, and an exploded perspective view, respectively, of an effector according to some embodiments of the present invention. 4 is a diagram for explaining an effect of an effector according to some embodiments of the present invention. 10 is a cross-sectional view for explaining a form in which an isolator, an insulator, and a nozzle are combined. 12 is a view for explaining a form in which an effector according to some embodiments of the present invention is combined with a rod.

Referring to FIGS. 2, 3, 5, 9, and 11, an effector 10 according to some embodiments of the present invention includes a first plate 110, a second plate 120, A heat sink 130, a heat block cover 198, a fan 140, an isolator 150, an insulator 160, a spring 170, a heat block block 190, a heat source 194, a heat sensor 196, a magnet 105, and the like.

On the upper surface of the first plate 110, a plurality of recesses in which a plurality of magnets 105 can be installed are formed. Each magnet 105 may have a groove in its interior, as shown in Figs. 2 and 11. That is, for example, each magnet 105 may be in the form of a donut. A rod (see 265 in Fig. 12) (specifically, a ball-shaped tab (265a in Fig. 12) connected to the rod 265) can be seated in the groove of the magnet 105. Without the separate fastening structure, the tab 265a engages with the magnet 105, so that the effector 10 and the rod 265 can be easily engaged. Such a magnet coupling structure is easy to attach and detach, and has no shaking due to clearance.

In the drawings, six magnets 105 are illustrated as being attached, but the present invention is not limited thereto. For example, three or nine magnets 105 may be attached.

The first plate 110 may comprise a metal (e.g., silver, copper, aluminum).

The second plate 120 is positioned below the first plate 110. The second plate 120 may also include a metal (e.g., silver, copper, aluminum). The second plate 120 includes a metal having a high thermal conductivity so that a nozzle portion provided under the second plate 120 (i.e., a heat block 190, a nozzle 192, a heat source 194, a heat sensor 196 ) Can be prevented from being transmitted to the upper side. The generated heat is transmitted to the heat sink 130, and the heat can be quickly removed.

An isolator 150 and an insulator 160 are installed between the first plate 110 and the second plate 120. The isolator 150 may be disposed closer to the second plate 120 than the insulator 160 and the insulator 160 may be disposed closer to the first plate 110 than the isolator 150.

The isolator 150 may be disposed in contact with the nozzle 192. SUS (Steel Use Stainless) materials having a relatively low conductivity may be used to minimize the transfer of heat generated from the nozzle units 190, 192, 194, and 196 to the top.

Further, the insulator 160 is a portion into which the filament transferred from the source providing portion 30 (for example, a filament holder) enters. Accordingly, the filament may be made of a relatively soft material as compared with the isolator 150 so that the filament can smoothly enter. The insulator 160 may use plastic (e.g., PTFE Teflon) having a low coefficient of friction and heat resistance, but is not limited thereto.

A spring 170 is fitted in the upper end of the insulator 160. Therefore, since the spring 170 pushes the insulator 160, the insulator 160 and the isolator 150 can be brought into close contact with the second plate 120.

The heat sink 130 is installed between the first plate 110 and the second plate 120. As described above, the heat sink 130 serves to extract the heat transferred from the second plate 120. Also, since the fan 140 and the first plate 110 are coupled to the heat sink 130, the heat sink 130 also functions to fix the fan 140 and the first plate 110 together. In addition, the fan 140 is installed to face the heat sink 130 directly. "Immediately facing" means that no other components are disposed between the fan 140 and the heat sink 130 but directly contacted.

On the other hand, nozzle portions 190, 192, 194, and 196 are provided below the second plate 120.

The heat block 190 is a block for installing a nozzle 192 for generating heat, a heat source 194, a heat sensor 196, and the like. For example, the heat block 190 may be made of metal that is easy to cast, such as brass, but is not limited thereto. The heat source 194 may be, for example, a heat cartridge, and the heat sensor 196 may measure the temperature of the heat block 190. A more detailed description of the nozzle units 190, 192, 194, and 196 will be described later with reference to Fig.

The filament transferred through the insulator 160 and the isolator 150 is melted in the nozzle 192 by the heat generated by the heat source 194.

The nozzle 192 is a part for discharging the molten filament and is designed to be as short as possible in order to quickly transfer the heat of the heat source 194. Such a short design can reduce the preheating time to a minimum.

On the other hand, the heat block cover 198 is disposed below the second plate 120 and covers the nozzle portions 190, 192, 194, and 196. As shown, the heat block cover 198 covers the body of the nozzle 192 and exposes the tip 193 of the nozzle 192.

The heat block cover 198 can prevent damage to the nozzle portions 190, 192, 194, and 196 from the wind of the fan 140. [ In addition, it can be designed as a structure that bypasses wind to output (or three-dimensional item 191). Specifically, the heat block cover 198 includes a plurality of side walls, and at least one of the plurality of side walls has an inclined surface (198a in Fig. 3). The inclined surface 198a is disposed at a position facing the fan 140. [ The inclined surface 198a guides the wind generated in the fan 140 to the tip 193 of the nozzle 192. [

4, a region C1 between the first plate 110 and the second plate 120 is a low temperature region and the second plate 120, the heat block cover 198, the front cover The region H surrounded by the tip 192 of the nozzle 192 is a high temperature region and the region C2 close to the tip 193 of the nozzle 192 may be a low temperature region. That is, the regions C1 and C2 may be lower in temperature than the region H. [

Referring to FIG. 10, a cold chamber 160a is formed in the insulator 160, and a melting chamber 192a is formed in the nozzle 192. The cold chamber 160a and the melting chamber 192a are connected to each other. The filament provided in the source supply 30 is transferred to the effector 10 through the tube 31. These filaments pass through the cold chamber 160a of the insulator 160 and reach the melting chamber 192a of the nozzle 192. The melting chamber 192a is at a high temperature due to the heat generated by the heat source 194. Thus, the filament is melted in the melting chamber 192a, and the molten filament is discharged to the tip 193 of the nozzle 192. That is, melted filaments are stacked on the support (140 in Fig. 1). To keep the laminated filaments from collapsing and maintaining their shape, the laminated filaments must quickly cool. Therefore, the temperature around the tip 193 of the nozzle 192 should be low.

The reason why the temperature of the cold chamber 160a should be low is as follows. If the temperature of the cold chamber 160a is high, the filament melts before reaching the melting chamber 192a. As a result, even if the source supply 30 continuously pushes the filament, the filament does not move forward (i.e., toward the melting chamber 192a). That is, the region (for example, the region C1 in FIG. 4) before reaching the melting chamber 192a is at the lowest possible temperature and the melting chamber 192a And the temperature around the tip 193 of the nozzle 192 (i.e., the area C2 in Fig. 4) must be low again.

3, 4, and 10, in the effector according to some embodiments of the present invention, a portion R1 of the fan 140 overlaps the cold chamber 160a, The heat block cover 198 may be attached to the heat block cover 198 so as to overlap with the heat block cover 198. [ Of the plurality of side walls of the heat block cover 198, the side wall facing the fan 140 is an inclined surface.

With this configuration, the cooling of the cold chamber 160a and the cooling of the periphery of the tip 193 of the nozzle 192 by the single fan 140 can be performed at the same time. The wind W1 generated in the fan 140 is provided to the area C1 through the heat sink 130 and the wind W2 is provided to the area C2 along the slope surface 198a. That is, the inclined surface 198a of the heat block cover 198 can guide the wind generated in the fan 140 to the tip 193 of the nozzle 192. [ Thus, the regions C1 and C2 can maintain a low temperature.

The cooling of the cold chamber 160a by the single fan 140 and the cooling of the tip 193 of the nozzle 192 are performed at the same time so that the weight and the volume of the effector 10 can be reduced. When the weight of the effector 10 is reduced, the load of the magnet 105 and the rod 265 for fixing the effector 10 can be reduced, and the service life of the three-dimensional printer can be increased. When the volume of the effector 10 is reduced, the effector 10 can be moved in the corner in a limited space, so that it is easy to reduce the volume of the three-dimensional printer. In addition, since the number of the fans 140 to be used can be reduced, the cost of the three-dimensional printer can be reduced.

On the other hand, the extent to which the fan 140 overlaps with the heat block cover may vary depending on the design. However, if it is possible to send air around the tip 193 sufficiently through the inclined surface 198a, less than half of the fan can overlap with the heat block cover.

Since the second plate 120 is formed of a metal having a high thermal conductivity, the heat generated by the nozzle units 190, 192, 194, and 196 is transferred to the heat sink 130 along the second plate 120 It is easily communicated. Here, the fan 140 may be arranged to face the heat sink 130 directly. Having such a configuration, the heat transferred to the heat sink 130 can be cooled more easily by the fan 140.

In addition, since the cold chamber 160a and the melting chamber 192a are directly attached to each other, the heat can be transferred to the cold chamber 160a through the melting chamber 192a. However, in order to prevent heat conduction, an isolator 150 is provided between the insulator 160 and the second plate 120. Thus, the region C1 can maintain a low temperature.

13 is a view showing the nozzle unit of Fig. 11 in more detail.

Referring to FIG. 13, the heat block 190 may include a plurality of holes 190a, 190b, and 190c for mounting the nozzle 192, the heat source 194, and the sensor 196. FIG.

The first hole 190a is a hole penetrating from the upper side to the lower side of the heat block 190, and the nozzle 192 can be mounted. The second hole 190b may be a hole formed in a side surface of the heat block 190, and a heat source 194 may be mounted. The third hole 190c may be a hole formed in a side surface of the heat block 190, and the sensor 196 may be mounted.

The electric wire 199 is a wire to which a signal for an auto-calibration operation is applied. The signal may be, for example, a constant voltage, but is not limited thereto. For example, it may be a constant current, an alternating voltage, an alternating current, or the like.

The auto-calibration operation is an operation for grasping the positional relationship between the supporter 140 and the effector 10 before the effector 10 prints the three-dimensional item on the supporter 140. For example, when printing is started with the support table 140 slightly tilted, the nozzle 192 may be caught by the support 140 and may not be printed.

Therefore, before performing the printing operation, the positional relationship (e.g., the position / shape of the support 140) between the support 140 and the effector 10 is determined and the data value for printing is corrected. If the printing is performed based on the corrected data value, the above-described problem may not occur.

On the other hand, in Fig. 13, the electric wire 199 is electrically connected to the sensor 196. Fig. Since the heat block 190 and the nozzle 192 are both conductors, the voltage applied to the electric wire 199 is also transferred to the nozzle 192. [

The electric wire 199 may be connected to a certain portion of the effector 10 as long as a voltage can be transmitted to the nozzle 192. For example, it may be connected to the heat block 190 or the heat source 194, or the electric wire 199 may be directly connected to the nozzle 192.

Also, as described above, most of the components of the effector 10 can be made of a conductor. Therefore, even when the electric wire 199 is connected to the portion made of the conductor, the voltage can be transmitted to the nozzle 192. [ Concretely, a conductor (silver, copper, aluminum, or the like) is also used for the first plate 110, the second plate 120, the front cover 180 and the like, which are components of the effector 10, for example. SUS is also used for the isolator 150. Accordingly, even when the electric wire 199 is connected to either the first plate 110, the second plate 120, the front cover 180, or the isolator 150, the voltage can be transmitted to the nozzle 192.

The auto-calibration operation will be described later with reference to FIG. 14 to FIG. Figs. 14 and 15 are diagrams for explaining the auto-calibration operation. Fig. Figs. 16 and 17 are views for explaining a portion where the effector comes into contact with the support frame in the auto-calibration operation. Fig.

The three-dimensional printer according to some embodiments of the present invention may perform the auto-calibration operation using the nozzle 192 in which the electric wire 199 is installed, without performing the auto-calibration operation using a separate switching device .

Specifically, a first voltage may be applied to the wire 199, and a second voltage different from the first voltage may be applied to the support 140. Hereinafter, it is assumed that the first voltage is 5V and the second voltage is the ground voltage.

14, when the pedestal 140 and the effector 10 (i.e., the nozzle 192) are spaced apart, the controller 20 recognizes that the voltage applied to the effector 10 is 5V.

15, when the support table 140 and the effector 10 (i.e., the nozzle 192) are in contact with each other, 5 V is applied to the effector 10 and 0 V is applied to the support table 140 The current I is generated. The controller 20 recognizes that the voltage applied to the effector 10 is 0V instead of 5V. That is, the controller 20 can check the voltage change.

The controller 20 can check whether the voltage change occurs when the effector 10 is lowered from the starting point. For example, if the starting point is z = 180, then the default setting is to cause a voltage change to occur when z = 0. Depending on the position / shape of the support 140, a voltage change may occur when the effector 10 is lowered (e. G., Z = + 8), and when the effector 10 is further lowered , z = -8) voltage change can occur. In this way, the controller 20 can grasp the position / shape of the support table 140 using only the effector 10 without using a separate switching device.

For example, as shown in FIG. 16, three points P1, P2, and P3 on the support 140 can be directly contacted by the effector 10 (nozzle 192). Alternatively, as shown in Fig. 17, four points P1, P2, P3, and P4 on the supporter 140 can be directly contacted with the effector 10 (nozzle 192). As the contact position and the number of contact are larger, the position / shape of the support member 140 can be grasped in more detail. However, this position and frequency may vary depending on the design.

Referring to FIG. 16, z = 0 at the P1 position, z = + 8 at the P2 position, and z = -8 at the P3 position, for example. Reflects the z value at each position, and corrects / reflects the data value for printing. 3D printing is started using the modified data values.

Hereinafter, with reference to Figs. 18 and 19, a three-dimensional printer according to some embodiments of the present invention will be described. 18 and 19 are a perspective view and a front view, respectively, of a three-dimensional printer according to some embodiments of the present invention. The three-dimensional printer shown in Figs. 18 and 19 is an exemplary implementation of the three-dimensional printer described with reference to Fig.

Referring to Figs. 18 and 19, a three-dimensional printer according to some embodiments of the present invention may employ, for example, a delta operating method.

On the upper portion of the lower frame 101, a support base 140 is disposed. The effector 10 produces a three-dimensional item on the support 140 while moving on the support 140 according to the delta driving scheme. Three (or three) pairs of shafts 260 are disposed between the lower frame 101 and the upper frame 102. Three pairs of shafts 260 are disposed around the effector 10. The three pairs of rods 265 can move along three pairs of corresponding shafts 260, respectively. The effector 10 can freely move in the x-axis, the y-axis, the diagonal direction or the like in accordance with the movement of the three pairs of rods 265. The rod 265 can be moved by a belt 261 disposed between the three pairs of shafts 260. The belt may be driven by a motor such as, for example, a stepper motor.

At the center of the upper frame 102, an input unit 210 may be disposed. The input 210 may be in the form of a flat display. The input unit 210 may be, for example, a touch panel, a push button, a roll type button, or the like, but is not limited thereto.

A cover 103 is disposed on the upper portion of the upper frame 102. The cover 103 can be opened to repair the interior of the three-dimensional printer.

Although not shown in the drawing, the source supply (filament holder) can be disposed on the back surface of the three-dimensional printer.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

110: first plate 120: second plate
130: Heat sink 140: Fan
150: Isolator 160: Insulator
170: spring 190: heat block
194: heat source 196: heat sensor
198: Heat block cover

Claims (7)

A first plate;
A second plate disposed below the first plate;
A cold chamber disposed between the first plate and the second plate, the cold chamber transmitting a filament; And
And a nozzle unit disposed at a lower portion of the second plate and containing a meltering chamber connected to the cold chamber to melt and discharge the filament,
A heat block,
A heat generating unit installed in the heat block for melting the filament,
A nozzle disposed in the heat block, through which the molten filament is discharged,
And an electric wire electrically connected to at least one of the heat block, the heat generating unit, and the nozzle, to which a signal for an auto-calibration operation is applied. The ink jet recording head according to claim 1,
Further comprising a heat sensor installed in the heat block for measuring a temperature of the heat block,
Wherein the electric wire is electrically connected to at least one of the heat block, the heat generating portion, the nozzle and the heat sensor, and a signal for an auto-calibration operation is applied. The effector of claim 1, wherein the signal is a constant voltage. Heat block;
A heating unit installed in the heat block for melting filaments for three-dimensional printing;
A nozzle installed in the heat block and discharging the molten filament;
A heat sensor installed in the heat block for measuring a temperature of the heat block; And
Wherein the signal for the auto-calibration operation is electrically connected to at least one of the heat block, the heat generating portion, the nozzle, and the heat sensor. A three-dimensional printer comprising an effector as claimed in any one of claims 1 to 4. A support to which a first voltage is applied; And
An effector for forming a three-dimensional item on the support; And
And a controller for controlling the effector,
The effector
A heat block,
A heat generating unit installed in the heat block for melting the filament for three-dimensional printing,
A nozzle disposed in the heat block, through which the molten filament is discharged,
And an electric wire electrically connected to at least one of the heat block, the heat generating portion, and the nozzle and being applied with a second voltage different from the first voltage for an auto-calibration operation,
Wherein the controller determines a positional relationship between the support and the effector by directly contacting the effector to a plurality of positions of the support. A support to which a first voltage is applied; And
An effector for forming a three-dimensional item on the support; And
And a controller for controlling the effector,
The effector
A nozzle for discharging the molten filament for three-dimensional printing,
A conductor electrically connected to the nozzle,
And an electric wire electrically connected to the conductor and to which a second voltage different from the first voltage is applied for an auto-calibration operation,
Wherein the controller determines a positional relationship between the support and the effector by directly contacting the effector to a plurality of positions of the support.

Images