KR101682601B1 - Apparatus and method for automatic adjustment for balanced print bed in 3D printer - Google Patents

Abstract

The present invention relates to an automatic adjustment device for horizontal adjustment of a work table of a 3D printer and a method of adjusting the automatic adjustment device and a method of adjusting the same so that the adjustment can be performed in order to maintain a horizontal position with respect to the X- And an X-axis and a Y-axis adjusting unit for automatically adjusting the horizontal position of the work table.
In order to achieve the above object, the present invention provides a control device for a 3D printer which is disposed on one side of a workbench and adjusts a horizontal position of the workbench so as to be horizontally aligned with respect to the X- X-axis and Y-axis adjusting portions 210a and 210b; A driving unit 230 provided at each of the X axis or Y axis adjusting units 210a and 210b for providing a driving force for adjusting the horizontal with respect to the X axis or the Y axis of the work table 120; And a control unit 300 for controlling the driving unit 230 to maintain the level of the worktable 120 by transmitting a control signal to the driving unit 230.

Description

Technical Field [0001] The present invention relates to an automatic adjustment device for leveling a work bench of a 3D printer,

More particularly, the present invention relates to an automatic adjustment device for horizontal adjustment of a work table of a 3D printer, and more particularly, to an automatic adjustment device for horizontal adjustment of a work table of a 3D printer, The present invention relates to an automatic adjustment device for horizontal adjustment of a work table of a 3D printer and a method for adjusting the automatic adjustment device so that the horizontal position of the work table can be automatically adjusted by constructing an X-axis and Y-

In recent years, the use of 3D printers capable of molding the objects as they are using 3D data on objects has been increasing. These 3D printers have been used for pre-mass modeling and sample production. Recently, however, a technical basis has been established that can be used in the mass production of mass-produced products centered on small-volume products of various types.

In addition, the product molding method of the 3D printer includes a so-called additive type in which a target object is formed in a two-dimensional plane form, a three-dimensional laminated form in which the object is melted and attached, and a cutting mold have.

As a kind of additive type, a wire or filament made of thermoplastic plastic is fed through a feed reel and a feed roll, and the fed filament is mounted on a three-dimensional feed mechanism that is positioned relative to the work table in three directions of X, Y and Z There is a filament melt lamination molding method in which a two-dimensional planar shape is formed and the material is laminated on a work table to form an object in three dimensions.

Such a three-dimensional printer system is referred to as an FDM (Fused Deposition Modeling) system in which a thin thermoplastic resin is melted and injected through a printer head (or an 'extruder') and laminated one by one.

In addition, there is a MJM (Multi Jet Modeling) method in which a photo-curable resin is melted through a printer head and sprayed like an ink jet printer, and then cured with UV light to form a laminate, or a method in which a scanned portion is cured by injecting laser light into a photo- SLS (Selective Laser Sintering) method using the principle of molding by using a functional polymer or a metal powder instead of a photo-curing resin in an SLA (Stereo Lithographic Apparatus) method and SLA.

One example of the FDM-type 3D printer is a 3D printer capable of forming a multicolor product of Korean Registered Patent No. 1346704 (registered on December 24, 2014), as shown in FIG. 1, A heater nozzle 20 mounted on the X linear movement mechanism 4 and the Y linear movement mechanism 7 and positioned in the X and Y directions and disposed in the Z direction relative to the heater nozzle 20; And a plurality of thermoplastic filaments (3) arranged on one side of the frame (1) and being in the form of a wire are respectively transported to the heater nozzle (20) The heater nozzle 20 includes a nozzle body 21 formed with a plurality of introduction holes 22 into which the plurality of filaments 3 are individually introduced, The nozzle 22 is formed with a single discharge hole through which a single passage is merged and discharged. And a controller 2 for individually controlling the position adjustment of the X, Y, Z phase of the heater nozzle 20 and the feeding operation of the plurality of filament conveying sections 31.

The heater nozzle 20 is moved by the X linear movement mechanism 4 and the Y linear movement mechanism 7 and the work table 18 is moved by the Z linear movement mechanism 14 so that the work table 18 ), And the three-dimensional molding is sequentially laminated and formed.

In addition, in the conventional 3D printer, there is also a method in which the printer head mounted on the carrier, that is, the heater nozzle 20 moves in the X and Z axis directions, and the work table 18 moves in the Y axis direction. Alternatively, there is a delta method in which the work table is fixed and the printer head simultaneously performs linear motion and rotational motion in the X, Y, and Z axis directions.

On the other hand, in the conventional 3D printer, a head gap of 0.1 to 0.3 mm is required to be uniformly and precisely maintained over a whole plane of the work table between a printer head mounted on a carrier and a work table, This is a very important matter that the print quality is determined depending on how accurate and uniform the head gap is.

To this end, the 3D printer performs a head gap measurement operation and an adjustment operation to maintain the level of the work table in accordance with the measurement value obtained through the head gap measurement, in order to maintain the head gap uniformly and constantly with respect to the entire plane of the work surface.

The head gap measurement operation of the 3D printer is performed by moving the printer head 110 located on the work table 120 to a position on the plane of the work table 120, The head gap measurement sheet 130 is inserted between the work table 120 and the work table 120 to measure the head gap between the printer head 110 and the work table 120. [

3, a plurality of adjusting screws (not shown) are provided on the work table 120. The adjusting screws are provided on the work table 120, 124 to adjust the height of the worktable 120 to maintain the level of the worktable 120.

The screw shaft 126 is provided at one side of the pedestal 122 so that the work table 120 is moved in the Z axis and the motor 128 is provided with a rotational force to the screw shaft 126 do.

However, the conventional adjustment work for maintaining the level of the work table is not limited to a fine adjustment such as 1/100 (mm) by manually rotating a plurality of adjustment screws 124 formed between the work table 120 and the pedestal 122 There is a problem that it is difficult.

 That is, after measuring the head gap between the printer head 110 and the workbench 120, the horizontal error, that is, the tilt state of the workbench 120 can be checked based on the measured head gap measurement value, Is adjusted to maintain the level of the workbench 120 by rotating the adjusting screw 124 formed in the workbench 120 in either direction.

In this case, since the adjustment screw is rotated depending on the operator's senses, there is a problem that the adjustment operation time for maintaining the level of the work bench takes a long time.

In addition, a horizontal state often changes due to an external impact, self-vibration during printer printing, or force applied to a work table when the output is taken out. In this case, the user has to perform adjustment work, There is a problem that it is troublesome and the general user can not perform precise horizontal adjustment work.

An object of the present invention is to provide an X-axis and a Y-axis which are arranged at one side of a work table and are adjusted to maintain a horizontal position in the X-axis or Y-axis direction according to a control signal of the controller, And a Y-axis adjusting unit for adjusting the horizontal position of the workbench so that the horizontal position of the workbench can be automatically adjusted.

According to another aspect of the present invention, there is provided a 3D printer adjusting apparatus for adjusting a horizontal position of a work table, the apparatus comprising: An X-axis and Y-axis adjustment unit for adjusting the X-axis and Y-axis adjustment; A driving unit provided in each of the X axis and Y axis adjusting units to provide a driving force for adjusting the horizontal position with respect to the X axis or the Y axis of the work table; And a controller for transmitting a control signal to the driving unit to control the driving unit to maintain the level of the work table.

In the present invention, the X-axis and Y-axis adjusting units are configured to be stacked while being crossed with each other so as to be adjustable with respect to the X-axis or Y-axis direction with respect to the work table; The X-axis or Y-axis adjuster includes: a fixing bracket; A rotation bracket having one end hinged to a hinge shaft formed at one end of the fixing bracket and rotating at a predetermined angle about the hinge shaft; A vertical moving pin which is disposed between the fixing bracket and the rotation bracket and generates a vertical movement force by a driving force provided to the driving unit; And a spring provided between the fixing bracket and the rotation bracket to provide an elastic force.

In the present invention, the vertical moving pin may include: a head portion inserted into the driven gear of the driving portion at a predetermined depth and rotated together with the driven gear; And a bolt portion extending from the head portion; And a nut coupled to the bolt portion and interposed in a second recess formed in the rotation bracket so as not to rotate.

In the present invention, between the second recessed groove of the rotation bracket and the nut, a predetermined distance is provided between the vertical movement pin and the rotary bracket so as to avoid interference occurring between the vertical movement and the rotation movement of the rotation bracket. .

In the present invention, the X-axis and Y-axis adjusting units are configured to be stacked while being crossed with each other so as to be adjustable with respect to the X-axis or Y-axis direction with respect to the work table; The X-axis or Y-axis adjuster includes: a fixing bracket; A rotation bracket having one end hinged to a hinge shaft formed at one end of the fixing bracket and rotating at a predetermined angle about the hinge shaft; A cam formed between the fixing bracket and the rotation bracket to rotate the rotation bracket by a predetermined angle by a driving force provided to the driving unit; And a spring provided between the fixing bracket and the rotation bracket to provide an elastic force.

In the present invention, the X-axis and Y-axis adjusting units are configured to be stacked while being crossed with each other so as to be adjustable with respect to the X-axis or Y-axis direction with respect to the work table; The X-axis or Y-axis adjuster includes: a fixing bracket; A rotation bracket having one end hinged to a hinge shaft formed at one end of the fixing bracket and rotating at a predetermined angle about the hinge shaft; A wedge formed between the fixing bracket and the rotation bracket to vary the rotation angle of the rotation bracket according to an insertion depth inserted along the longitudinal direction by a driving force provided to the driving unit; And a spring provided between the fixing bracket and the rotation bracket to provide an elastic force.

In the present invention, the driving unit may include: a motor for generating forward rotation or reverse rotation; A driving gear formed in the motor; And a driven gear that receives a rotational force from the driven gear and rotates the rotary bracket at a predetermined angle according to a vertical movement distance generated by rotating the vertical movement pin.

The present invention relates to a method of adjusting a 3D printer, which is arranged on one side of a work table and adjusts the work table to be held horizontally, the method comprising: confirming whether an adjustment signal for maintaining the work table is inputted; Converting the adjustment signal into a control variable for controlling the motor of the driving unit; And adjusting the X axis or Y axis so that the X axis and Y axis adjusters maintain the level of the work table by driving the motor according to the control variables.

In the present invention,

? L? Lb x tan (? B)

? m = (1 / r) x? l / ls x 360

Here,? 1 is the vertical moving distance of the vertical moving pin,

Lb is the distance from the hinge axis of the rotating bracket to the vertical moving pin,

? b is the rotation angle of the rotation bracket,

r is the reduction ratio for the gear train from the driving gear to the driven gear,

ls is the spiral spacing of the bolt portion of the vertical moving pin,

and &thetas; m is preferably made by the rotation angle of the motor.

According to the present invention, an X-axis and a Y-axis adjusting unit, which is configured on one side of a work table and adjusts to maintain the X-axis or Y-axis direction according to a control signal of the controller, Thus, it is possible to accurately and easily adjust the operation irrespective of the skill of the worker.

In addition, by greatly reducing the labor and time required to adjust the level of the workbench, the working time is reduced, thereby reducing the cost saving effect and the user's dissatisfaction.

In addition, not only a professional manager but also an ordinary user has the effect of precisely leveling the work table.

1 is a perspective view showing an example of a conventional 3D printer.
2 is a perspective view showing a state in which a head gap is adjusted in a conventional 3D printer.
Fig. 3 is a schematic side view showing a coupling relation between a printer head and a work table in a conventional 3D printer. Fig.
4 is a schematic perspective view showing the installation state of the adjusting device according to the present invention.
5 is an exploded perspective view of an adjuster of a regulating device according to a first embodiment of the present invention;
6 is a cross-sectional view of a work bench according to a first embodiment of the present invention, in which a control device is installed.
7 is a partially enlarged cross-sectional view showing a power transmission state of a regulating device driving unit according to the first embodiment of the present invention.
8 is a partially enlarged and separated perspective view showing a coupling relationship of vertical moving pins of the adjusting device according to the first embodiment of the present invention;
9 is a block diagram of a method of leveling the workbench with the adjusting device according to the first embodiment of the present invention.
10 is a schematic coupling sectional view of a regulating device according to a second embodiment of the present invention,
10a is a state before the level is adjusted, and 10b is a state after the level is adjusted.
Figure 11 is a schematic cross-sectional view of a regulating device according to a third embodiment of the present invention,
11a is a state before the level is adjusted, and 11b is a state after the level is adjusted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. (The same reference numerals are used for the same components as the conventional ones, and a detailed description thereof will be omitted).

4, the adjusting device 200 of the present invention includes the X-axis adjusting portion 210a and the Y-axis adjusting portion 210b on one side of the work table 120, It automatically adjusts for X axis or Y axis to keep horizontal.

≪ Embodiment 1 >

4, the adjustment device 200 of the first embodiment includes the X-axis adjustment portion 210a, the Y-axis adjustment portion 210b, and the adjustment portions 210a and 210b And a driving unit 230 for driving the driving unit.

The adjusting device 200 is configured in the work table 120. That is, the work table 120 is provided between the work table 120 and the pedestal 122, and controls the inclination of the controller 200 by driving the drive part 230 according to the control signal of the controller 300, So as to maintain the horizontal position.

At least one spring 240 is provided to the adjusting device 200, that is, the X-axis and Y-axis adjusting parts 210a and 210b, to provide an elastic force for precise control.

The X-axis and Y-axis adjusting units 210a and 210b are means for adjusting the X-axis or Y-axis direction of the work table 120, respectively, but have the same configuration. Explanations are made using the same names and symbols.

5, the X-axis or Y-axis adjusters 210a and 210b are hinge-coupled to a fixing bracket 212 and a hinge shaft 216 at one end of the fixing bracket 212, A rotation bracket 214 which is rotated around the hinge shaft 216 at a predetermined angle and a driving force which is provided between the fixing and rotating brackets 212 and 214 to rotate the rotation bracket 214 by a predetermined angle, And a nut 219 rotatably coupled between the fixing bracket 212 and the rotation bracket 214 and rotated by the driving force of the driving unit 230 to vertically move the nut 219, And a vertical movement pin 218 for rotating the bracket 214 by a predetermined angle.

The fixing bracket 212 provides a fixing force such that the rotation bracket 214 rotates about the hinge shaft 216 at a stable angle.

In this case, the fixing bracket 212 is fixed to the pedestal 122 or the rotation bracket 214 on the other side.

The fixed bracket 212 is formed to have a size to accommodate the driven gear of the driving unit 230 so that the first depressed groove 211 having a predetermined depth is formed so that the driven gear is not exposed to the outside .

The rotation bracket 214 is hinged to a hinge shaft 216 formed at one end of the fixing bracket 212 and rotates about the hinge shaft 216 by a predetermined angle, Or in the Y-axis direction.

A part of the vertical movement pin 218 is inserted into the rotation bracket 214 and a nut 219 is fastened to an end of the rotation bracket 214. A second recess A groove 215 is formed.

The second recess 215 of the rotary bracket 214 is spaced apart from the nut 219 by a predetermined distance g as shown in FIG. . This prevents interference between the rotational movement of the rotation bracket 214 and the linear movement between the vertical movement pin 218 and the nut 219. [

The hinge shaft 216 is formed at one end of the fixed and rotating brackets 212 and 214 to hinge one end of the fixed and rotating brackets 212 and 214.

The vertical moving pin 218 is a means for rotating the nut 219 coupled to the bolt portion 2184 by the driving force provided by the driving unit 230 into vertical motion. Therefore, the fixing and rotating brackets 212 and 214 rotate at a predetermined angle around the hinge shaft 216. [

The vertical movement pin 218 includes a head portion 2182 positioned in the first recess 211 of the fixing bracket 212 and a second recess 213 extending from the head portion 2182, And a bolt portion 2184 which is inserted into the insertion hole formed in the rotary bracket 214 and extends to a predetermined length and is engaged with the nut 219 formed in the second recess 215 of the rotary bracket 214.

The head portion 2182 is inserted into a driven gear of the driving portion 230 and configured to rotate together with the driven gear. At this time, the head portion 2182 is formed so as to be rotatable together with the driven gear by being formed in a plane. In this case, the head portion 2182 has a polygonal shape.

The bolt portion 2184 extends from the head portion 2182 and is engaged with the nut 219. An insertion groove 2185 is formed at an end of the bolt portion 2184 so that the stop ring 2186 is engaged.

The driving unit 230 generates a rotational force through an external power source and provides the rotating force to the vertical moving pin 218 so that the vertical movement of the nut 219 coupled to the vertical moving pin 218 .

The driving unit 230 includes a motor 232 generating a rotational force by an external power source, a driving gear 234 provided on the extension shaft of the motor 232 to generate rotational force, And a driven gear 236 which is engaged with the driven gear 236 and is provided with a rotational force.

The driving unit 230 is provided with a plurality of gears that are provided in the driving gear 234 and the driven gear 236 to transmit the rotational force of the motor 232 in accordance with an appropriate level of rotation ratio It is preferable that the gear train 238 is formed. The gear train 238 constitutes at least one gear so that any configuration can be used as long as the gear train 238 can be precisely controlled by reducing the number of revolutions.

The motor 232 is a means for generating a forward rotation or a reverse rotation force in accordance with an application method of an external power supply in accordance with a control signal of the controller 300. [

The driven gear 234 is a means for transmitting the rotational force generated by the motor 232 to the driven gear 236.

The driven gear 236 is a means for receiving a rotational force through the driving gear 234 or the gear train 238 and transmitting the rotational force through the vertical moving pin 218 so as to be vertically moved.

A second insertion groove 235 into which the head portion 2182 of the vertical movement pin 218 is inserted is formed in the driven gear 236.

The rotational force generated in the driving unit 230 is transmitted to the driven gear 236 and the vertical moving pin 218 is transmitted to the driven gear 236. The X-axis or Y-axis adjusting units 210a, The vertical movement pin 218 rotates together with the driven gear 236. The vertical movement pin 218 rotates together with the driven gear 236, as shown in Fig. The rotation bracket 214 is tightened or loosened with respect to the rotation direction between the bolts 2184 of the vertical movement pins 218 and the nuts 219 engaged with the bolts 2184 of the vertical movement pins 218, And rotates about axis 216 at a constant angle.

The spring 240 is disposed between the fixed and rotating brackets 212 and 214 so that an elastic force is always applied to the rotating bracket 214 with respect to the fixed bracket 212.

The control unit 300 may transmit control signals to the driving units 230 of the X axis or Y axis adjusting units 210a and 210b to automatically adjust the X axis or Y axis direction of the work table 120 Is performed.

A method for horizontal adjustment of a 3D printer using an automatic adjustment device for horizontal adjustment of a 3D printer configured as described above will be described with reference to FIG.

First, it is confirmed whether or not the work bench adjustment signal is input (S1).

The X-axis and Y-axis adjusting portions 210a for maintaining the horizontal adjustment of the head gap with respect to the X-axis and Y-axis directions on the work surface 120 measured by the manual or automatic measuring method, Lt; RTI ID = 0.0 > 210b. ≪ / RTI >

When the control signal is inputted to the control unit (S1), the control signal is converted into a control parameter for controlling the motor 232 of the driving unit 230 (S2).

? L? Lb x tan (? B)

? m = (1 / r) x? l / ls x 360

Here,? 1 is the vertical moving distance of the vertical moving pin,

Lb is the distance from the hinge axis of the rotating bracket to the vertical moving pin,

? b is the rotation angle of the rotation bracket,

r is the reduction ratio for the gear train from the driving gear to the driven gear,

ls is the spiral spacing of the bolt portion of the vertical moving pin,

and? m is the rotation angle of the motor.

When the conversion into the control variable is completed (S2), a control operation for maintaining the level of the work table in the X axis or Y axis controller is performed (S3) by driving the motor according to the control variable.

When the rotational force is generated by the motor 230 according to the converted control variables, rotational force is transmitted to the driven gear 236 through the driving gear 234 and the gear train 238 as shown in FIG.

Since the head 2182 of the vertical movement pin 218 is inserted into the driven gear 236 in the rotating driven gear 236, the vertical movement pin 218, together with the driven gear 236, .

At this time, the nut 219 coupled with the bolt 2184 of the vertical movement pin 218 is moved vertically along the thread of the bolt 2184, and the elastic force of the spring 240 is transmitted to the fixing bracket 212 And the rotary bracket 214 rotates about the hinge shaft 216 by a predetermined angle to support the workbench 120 in a horizontal direction relative to the X-axis direction.

In this case, rotation may occur between the fixing bracket 212 and the rotation bracket 214, and linear motion may occur between the driven gear 236 and the vertical movement pin 218, thereby causing interference. However, as shown in FIG. 8, since the nut 219 has a gap of a certain interval g in the second recess 215, interference occurring between the rotational motion and the linear motion is avoided So that smooth rotation and linear motion are performed.

In addition, the adjusting action of the Y-axis adjusting unit 210b is the same as that of the X-axis adjusting unit 210a, and a detailed description thereof will be omitted.

≪ Embodiment 2 >

The same reference numerals are used for the same components as those in the first embodiment, and a detailed description thereof will be omitted.

10A, the adjusting device 200 of the second embodiment includes an X-axis adjusting unit 210a, a Y-axis adjusting unit 210b, and the X-axis and Y-axis adjusting units 210a and 210b, Axis adjusting unit 210a and the Y-axis adjusting unit 210b and is rotated by the driving force provided by the driving unit 230 so that the work table 120 The cam 250 is configured to perform an adjustment operation with respect to the X-axis or Y-axis direction.

The cam 250 is formed with a cam line diagram so as to provide a fine variation amount in a range that can be leveled according to the rotation angle.

10B, the cam 250 rotates clockwise or counterclockwise by a driving force, that is, a rotational force, provided by the driving unit 230, and rotates the hinge shaft 216 The rotation bracket 214 rotates at a predetermined angle.

≪ Third Embodiment >

The same reference numerals are used for the same components as those of the first and second embodiments, and a detailed description thereof will be omitted.

11A, the adjustment device of the third embodiment includes an X-axis adjusting portion 210a and a Y-axis adjusting portion 210b, and a plurality of X-axis adjusting portions 210a and 210b The X-axis adjusting unit 210a and the Y-axis adjusting unit 210b are respectively provided with a driving unit 230a for providing a driving force and a driving force provided by the driving unit 230a, A wedge 260 is configured to allow the adjustment operation to be performed with respect to the X-axis or Y-axis direction.

The wedge 260 is formed between the fixing bracket 212 and the rotation bracket 214 and rotates around the hinge shaft 216 formed on the fixing bracket 212 according to the depth of the wedge 260 inserted along the longitudinal direction. As the bracket 214 rotates by a certain angle, adjustment work is performed to keep the work table 120 horizontal with respect to the X axis or Y axis direction.

In this case, the driving unit 230a may be any means that reciprocates the wedge 260 in the longitudinal direction.

For example, the driving unit 230a may include a screw shaft 239 inserted through the wedge 260 or inserted at a predetermined depth, and may be rotated in the forward or reverse direction by a rotational force provided by the motor of the driving unit 230a. The wedge 260 is reciprocally moved so that the rotation bracket 214 rotates at a predetermined angle.

Further, the wedge 260 is formed as a single-ended type having a slope at a certain angle at both ends or a single-type having a slope at either one.

The second embodiment is a cam system in which the rotation bracket is rotated at a predetermined angle according to the rotation angle of the cam, and the third embodiment is a cam system in which the rotation bracket is rotated by a predetermined angle according to the rotation angle of the cam. The embodiment is a wedge type in which the rotation bracket is rotated at a predetermined angle according to the longitudinal insertion depth of the wedge.

Of course, the present invention is not limited thereto, and any method can be used as long as the rotary bracket can rotate around a hinge axis formed on the fixed bracket by a driving force of a driving unit configured on the X axis or Y axis adjusting unit.

The above description is only one example for implementing the automatic adjustment device for adjusting the level of the work bench of the 3D printer and its adjustment method, and the present invention is not limited to the above-described embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

200: Adjusting device 210a: X-axis adjusting part
210b: Y-axis adjusting portion 211: first recessed groove
212: Fixing bracket 214: Rotating bracket
215: second depression groove 216: hinge axis
218: vertical moving pin 2182:
2184: bolt portion 219: nut
230: driving unit 232: motor
234: driving gear 236: driven gear
238: gear train 240: spring
250: cam 260: wedge
300:

Claims (9)

1. A leveling device for a work bench of a 3D printer which is arranged on one side of a work bench and adjusts the level of the work bench so that the gap between the work bench and the head is constant,
An X-axis and Y-axis adjusting units 210a and 210b that are formed in the work table 120 and adjust the X-axis or Y-axis direction to be horizontal;
A driving unit 230 provided at each of the X axis or Y axis adjusting units 210a and 210b for providing a driving force for adjusting the horizontal with respect to the X axis or the Y axis of the work table 120; And
And a control unit 300 for controlling the driving unit 230 to maintain the level of the worktable 120 by transmitting a control signal to the driving unit 230;
The X-axis and Y-axis adjusters 210a and 210b are configured to be stacked while being crossed with each other so as to be adjustable with respect to the X-axis or Y-axis direction with respect to the work table 120;
The X-axis or Y-axis adjusters 210a and 210b include a fixed bracket 212;
A rotation bracket 214 having one end hinged to a hinge shaft 216 formed at one end of the fixing bracket 212 and rotating at a predetermined angle about the hinge shaft 216;
A vertical movement pin 218 formed between the fixing bracket 212 and the rotation bracket 214 to generate a vertical movement force by a driving force provided to the driving unit 230; And
And a spring (240) provided between the fixing bracket (212) and the rotation bracket (214) to provide an elastic force;
The vertical moving pin 218 includes a head portion 2182 inserted into the driven gear of the driving portion 230 to be rotated with the driven gear, And
And a bolt portion 2184 extending from the head portion 2182;
A nut 219 coupled to the bolt 2184 and inserted into a second recess 215 formed in the rotation bracket 214 so as not to rotate;
And an automatic adjustment device for horizontal adjustment of the work table of the 3D printer.
delete delete The method according to claim 1,
It is possible to prevent interference generated between the vertical movement of the vertical movement pin 218 and the rotation movement of the rotation bracket 214 between the second recess 215 and the nut 219 of the rotation bracket 214 To be spaced apart (g);
And the automatic adjustment device for the horizontal adjustment of the work table of the 3D printer.
delete delete The method according to claim 1,
The driving unit 230 includes a motor 232 generating a forward or reverse rotation force;
A driving gear 234 configured to the motor 232; And
A driven gear 236 for rotating the rotary bracket 214 at a predetermined angle according to a vertical movement distance generated by rotating the vertical movement pin 218 by receiving a rotational force from the driven gear 234;
And an automatic adjustment device for horizontal adjustment of the work table of the 3D printer.
1. A horizontal adjustment method for a 3D printer in a 3D printer which is arranged on one side of a workbench and adjusts the horizontal position of the workbench so that the distance between the workbench and the head is constant,
(S1) confirming whether an adjustment signal for maintaining the level of the workbench is inputted;
When the control signal is inputted through the control signal input step (S1), the control signal is converted into a control variable for controlling the motor of the driving unit by the control signal (S2); And
When the control variable is converted (S2), a control signal of the control unit is transmitted to the driving unit, and an adjustment operation is performed on the X-axis or Y-axis so that the X- (S3), < / RTI >
The control variable conversion is expressed as:? L? Lb x tan (? B)
? m = (1 / r) x? l / ls x 360
Here,? 1 is the vertical moving distance of the vertical moving pin,
Lb is the distance from the hinge axis of the rotating bracket to the vertical moving pin,
? b is the rotation angle of the rotation bracket,
r is the reduction ratio for the gear train from the driving gear to the driven gear,
ls is the spiral spacing of the bolt portion of the vertical moving pin,
? m is the rotation angle of the motor;
And the automatic adjustment method for the horizontal adjustment of the work table of the 3D printer. delete

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