KR102558396B1 - 3D printer using waste paper complex solution - Google Patents

Abstract

Disclosed is a 3D printer using a waste paper composite solution. A 3D printer using a waste paper composite solution according to an embodiment of the present invention includes a table having a work area; X-axis transfer unit coupled to the table; Y-axis transfer unit coupled to the X-axis transfer unit; Z-axis transfer unit coupled to the Y-axis transfer unit; and an extrusion part filled with the waste paper composite solution coupled to the Z-axis transfer unit, and since the extrusion part can extrude the waste paper composite solution into a work area to produce a three-dimensional shape, eco-friendly building materials of various sizes and shapes can be manufactured.

Description

3D printer using waste paper complex solution

The present invention relates to a 3D printer using a composite solution of waste paper, and more particularly, to a 3D printer capable of printing eco-friendly building materials using recycled waste paper as a printing material.

A traditional printer is a device that prints on a two-dimensional plane such as paper, and uses document data composed of text or images.

A 3D printer is a device that prints in a three-dimensional three-dimensional space, and the 3D printer creates three-dimensional articles using three-dimensional drawing data.

3D printers are classified according to the method of making a three-dimensional print, and there is a layered type that builds up very thin two-dimensional surfaces layer by layer, and a layered type that makes prints by shaving large chunks as if sculpting.

3D printers have traditionally been mainly used in manufacturing industries such as aviation and automobiles, but recently they are also being used in the medical, construction, retail, food, and clothing industries.

General printers print using toner or ink, but 3D printers mainly print using plastic materials, and in recent years, paying attention to the possibility of using 3D printers in various industries, they are printing using various materials such as rubber, metal, and ceramics in addition to plastic materials.

In general, 3D printers have a problem of consuming a lot of energy to make materials such as plastic or metal into a liquid state.

Korean Patent Registration No. 10-2028327 (registration date: 2019.09.27)

One problem to be solved by the present invention is to provide a 3D printer using a waste paper composite solution capable of printing eco-friendly building materials.

Another problem to be solved by the present invention is to provide a 3D printer using a waste paper composite solution capable of using recycled waste paper as a printing material.

Another problem to be solved by the present invention is to provide a 3D printer using a waste paper composite solution having a cylinder cleaning system.

In order to achieve the above object, a 3D printer using a waste paper composite solution according to an embodiment of the present invention includes a table having a work area; X-axis transfer unit coupled to the table; Y-axis transfer unit coupled to the X-axis transfer unit; Z-axis transfer unit coupled to the Y-axis transfer unit; and an extrusion unit filled with the waste paper composite solution coupled to the Z-axis transport unit, and the extrusion unit extrudes the waste paper composite solution into a work area to produce a three-dimensional shape.

In addition, in order to achieve the above object, the extrusion unit of the 3D printer using the waste paper composite solution according to an embodiment of the present invention, the mounting unit coupled to the Z-axis transfer unit; A cylinder coupled to the mounting portion and filled with a waste paper composite solution; A nozzle coupled to the lower part of the cylinder and extruding the waste paper composite solution; A piston that moves up and down inside the cylinder; And coupled to the mounting portion may include an extrusion drive unit for lifting the piston.

In addition, in order to achieve the above object, the mounting portion of the 3D printer using the waste paper composite solution according to an embodiment of the present invention is coupled to the Z-axis transfer unit and a first holder for fixing the lower portion of the cylinder; A pair of support bars disposed parallel to the cylinder and having lower portions coupled to the first cradle; A second cradle coupled to the upper portion of the support bar and fixing the upper portion of the cylinder; and a third cradle disposed between the first cradle and the second cradle, coupled to the support bar, and fixing the cylinder.

In addition, in order to achieve the above object, the piston of the 3D printer using the waste paper composite solution according to an embodiment of the present invention is a rod that moves up and down by the extrusion drive unit; And coupled to the lower portion of the rod may include a head that moves up and down inside the cylinder.

In addition, in order to achieve the above object, in the 3D printer using the waste paper composite solution according to the embodiment of the present invention, the second holder covers the upper part of the cylinder, the rod is coupled through the second holder, and the extrusion drive unit is coupled to the second holder and can lift the rod protruding from the top of the second holder.

In addition, in order to achieve the above object, the cylinder of the 3D printer using the waste paper composite solution according to the embodiment of the present invention may be coupled with a supply line for supplying the waste paper composite solution.

In addition, in order to achieve the above object, the cylinder of the 3D printer using the waste paper composite solution according to the embodiment of the present invention can be washed inside by supplying water through the supply line.

In addition, in order to achieve the above object, the table of the 3D printer using the waste paper composite solution according to the embodiment of the present invention can be cleaned inside the cylinder and a drain through which water discharged to the outside of the cylinder moves.

In addition, in order to achieve the above object, in the 3D printer using the waste paper composite solution according to the embodiment of the present invention, the table is coupled with a tank capable of containing water moving to a drain, and the water contained in the tank is supplied to the supply line. Can be reused.

In addition, in order to achieve the above object, the nozzle of the 3D printer using the waste paper composite solution according to the embodiment of the present invention may protrude around the outlet and form a compaction unit capable of pressing the extruded waste paper composite solution.

According to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, a table having a work area; X-axis transfer unit coupled to the table; Y-axis transfer unit coupled to the X-axis transfer unit; Z-axis transfer unit coupled to the Y-axis transfer unit; and an extrusion part filled with the waste paper composite solution coupled to the Z-axis transfer unit, and since the extrusion part can extrude the waste paper composite solution into a work area to produce a three-dimensional shape, eco-friendly building materials of various sizes and shapes can be manufactured.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, the extruded unit includes a mounting unit coupled to the Z-axis transfer unit; A cylinder coupled to the mounting portion and filled with a waste paper composite solution; A nozzle coupled to the lower part of the cylinder and extruding the waste paper composite solution; A piston that moves up and down inside the cylinder; And since it may include an extrusion drive unit coupled to the mounting unit and elevating the piston, the waste paper can extrude the complex solution through the nozzle precisely.

In addition, according to the 3D printer utilizing the waste paper composite solution according to an embodiment of the present invention, the mounting unit is coupled to the Z-axis transfer unit and a first holder for fixing the lower portion of the cylinder; A pair of support bars disposed parallel to the cylinder and having lower portions coupled to the first cradle; A second cradle coupled to the upper portion of the support bar and fixing the upper portion of the cylinder; and a third cradle disposed between the first cradle and the second cradle, coupled to the support bar, and fixing the cylinder, so that the cylinder can be stably supported.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, the piston is a rod that moves up and down by the extrusion drive unit; And since it is coupled to the lower portion of the rod and may include a head that moves up and down inside the cylinder, the extrusion drive unit may operate the piston quantitatively.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, the second holder covers the top of the cylinder, the rod is coupled through the second holder, and the extrusion driver is coupled to the second holder. Since the rod protruding from the top of the second holder can be raised and lowered, the second holder can support the extrusion driver while acting as a cover for closing the top of the cylinder.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, since the supply line for supplying the waste paper composite solution can be coupled to the cylinder, the waste paper composite solution can be supplied inside the cylinder without replacing the cylinder.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, since the inside of the cylinder can be washed by supplying water through the supply line, water can be supplied to the inside of the cylinder using the supply line to be washed.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, the table can wash the inside of the cylinder and form a drain through which the water discharged to the outside of the cylinder moves, so that the inside of the cylinder is cleaned and the water discharged to the outside through the nozzle can be collected in a predetermined place.

In addition, according to the 3D printer using the waste paper composite solution according to an embodiment of the present invention, the table is coupled with a tank capable of containing water moving to a drain, and the water contained in the tank is moved to a supply line. Since it can be reused, it is possible to wash the inside of the cylinder and recover the water discharged to the outside through the nozzle to the tank and reuse it using the supply line.

In addition, according to the 3D printer utilizing the waste paper composite solution according to an embodiment of the present invention, the nozzle protrudes around the outlet to form a compaction unit capable of pressing the extruded waste paper composite solution, so that the surface of the extruded waste paper composite solution can be flattened to produce a product of excellent quality.

1 is a perspective view of a 3D printer utilizing a waste paper composite solution according to an embodiment of the present invention.
Figure 2 shows an exploded perspective view of Figure 1.
Figure 3 shows a front view of a 3D printer utilizing a waste paper composite solution according to an embodiment of the present invention.
Figure 4 shows a side view of a 3D printer utilizing a waste paper composite solution according to an embodiment of the present invention.
5 is an enlarged exploded perspective view of the extruded portion of FIG. 1;
6 is a diagram illustrating a state of use of a 3D printer using a waste paper composite solution according to an embodiment of the present invention.
7 is a diagram illustrating a state of use in which the nozzle of FIG. 6 is modified.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

The X, Y, and Z axes shown in the drawings are arbitrarily determined for convenience of explanation, not for limitation of rights, and the X axis indicates the forward (arrow side) and rear (arrow side) directions, the Y axis is the left and right directions, and the Z axis is defined as pointing up and down.

Each direction described below is based on this, except for cases specifically limited otherwise.

Up (top), bottom (down), left and right (side or side), front (front, front), back (back, back), etc., which refer to directions in the description and claims of the invention, etc. are not for the purpose of limitation of rights, but for convenience of description, the relative position between the drawings and configurations is determined as a standard, and each direction described below is based on this, except where otherwise specifically limited.

1 to 6, the 3D printer using the waste paper composite solution according to a preferred embodiment of the present invention includes a table 100 having a work area 110; An X-axis transfer unit 200 coupled to the table 100; Y-axis transfer unit 300 coupled to the X-axis transfer unit 200; A Z-axis transfer unit 400 coupled to the Y-axis transfer unit 300; And the waste paper coupled to the Z-axis transfer unit 400 may include an extrusion unit 500 filled with the composite solution 20 .

The extrusion unit 500 may extrude the waste paper composite solution 20 into the work area 110 to produce a three-dimensional shape.

The waste paper composite solution 20 is a printing material containing dissociated waste paper.

The waste paper composite solution 20 may be formed by mixing an additive such as a binder with dissociated waste paper.

The waste paper composite solution 20 is preferably formed as a paste.

1 to 5, the table 100 is configured to provide a work area 110 capable of printing a three-dimensional shape on its upper surface.

The table 100 may be coupled with the X-axis transfer unit 200 on the left and right sides of the work area 110 .

The table 100 may be formed with a drain 120 through which water is washed inside the cylinder 540 and discharged to the outside of the cylinder 540 .

The drain 120 may be formed as a groove or a hole through which water can move.

The table 100 may be coupled with a tank 130 capable of containing water moving to the drain 120 .

The table 100 may be coupled with a circulation pump 140 supplying the water collected in the tank 130 to the cylinder 540 for reuse.

The circulation pump 140 may be connected to the cylinder 540 through the return line 150.

The recovery line 150 may be connected to a supply line 541 supplying the waste paper composite solution 20 to the cylinder 540 .

1 to 4, the X-axis transfer unit 200 is configured to move the extrusion unit 500 in the X-axis direction.

The X-axis transfer unit 200 may include an X-axis lead screw 210 , an X-axis lead nut 220 , an X-axis drive motor 230 and an X-axis transfer table 240 .

The X-axis transfer unit 200 may further include an X-axis guide rail 250 and an X-axis guide block 260 .

The X-axis transfer unit 200 may further include an X-axis position sensor (not shown) capable of detecting the position of the X-axis lead nut 220, the X-axis transfer table 240, or the X-axis guide block 260.

The X-axis lead screw 210 is a component for moving the X-axis lead nut 220 in the X-axis direction.

A pair of X-axis lead screws 210 may be coupled to the top of the table 100 in the X-axis direction.

A pair of X-axis lead screws 210 may be disposed on the upper left and right sides of the table 100 based on the work area 110 .

A pair of X-axis lead nuts 220 are coupled to the X-axis lead screw 210 to move the X-axis transfer table 240 in the X-axis direction.

The X-axis transfer table 240 may be coupled to the X-axis lead nut 220 .

The X-axis drive motor 230 is configured to rotate the X-axis lead screw 210 .

The X-axis drive motor 230 may be coupled to the table 100 to rotate the X-axis lead screw 210 .

When the X-axis drive motor 230 rotates the X-axis lead screw 210 , the X-axis lead nut 220 may move along the X-axis lead screw 210 .

The X-axis transfer table 240 is a work table that is coupled to the X-axis lead nut 220 and moves in the X-axis direction.

The Y-axis transfer unit 300 may be coupled to the X-axis transfer table 240 .

The X-axis guide rail 250 is a configuration for guiding the X-axis guide block 260 in the X-axis direction.

A pair of X-axis guide rails 250 may be coupled to the top of the table 100 in the X-axis direction.

The X-axis guide rail 250 may be disposed parallel to the X-axis lead screw 210 .

A pair of X-axis guide rails 250 may be disposed on the upper left and right sides of the table 100 based on the work area 110 .

A pair of X-axis guide blocks 260 are coupled to the X-axis guide rail 250 to guide the X-axis transport table 240 in the X-axis direction.

The X-axis transport table 240 may be coupled to the X-axis guide block 260 .

1 to 4, the Y-axis transfer unit 300 is a component for moving the extrusion unit 500 in the Y-axis direction.

The Y-axis transfer unit 300 may include a Y-axis lead screw 310 , a Y-axis lead nut 320 , a Y-axis drive motor 330 and a Y-axis transfer table 340 .

The Y-axis transfer unit 300 may further include a Y-axis guide rail 350 and a Y-axis guide block 360 .

The Y-axis transfer unit 300 may further include a Y-axis position sensor (not shown) capable of detecting the position of the Y-axis lead nut 320, the Y-axis transfer table 340, or the Y-axis guide block 360.

The Y-axis lead screw 310 is a component for moving the Y-axis lead nut 320 in the Y-axis direction.

The Y-axis lead screw 310 may be coupled to the X-axis transfer table 240 in the Y-axis direction.

The Y-axis lead nut 320 is coupled to the Y-axis lead screw 310 to move the Y-axis transfer table 340 in the Y-axis direction.

The Y-axis transfer table 340 may be coupled to the Y-axis lead nut 320 .

The Y-axis drive motor 330 is configured to rotate the Y-axis lead screw 310 .

The Y-axis drive motor 330 may be coupled to the X-axis transfer table 240 to rotate the Y-axis lead screw 310 .

When the Y-axis drive motor 330 rotates the Y-axis lead screw 310 , the Y-axis lead nut 320 may move along the Y-axis lead screw 310 .

The Y-axis transfer table 340 is a work table that is coupled to the Y-axis lead nut 320 and moves in the Y-axis direction.

The Z-axis transfer unit 400 may be coupled to the Y-axis transfer table 340 .

The Y-axis guide rail 350 is configured to guide the Y-axis guide block 360 in the Y-axis direction.

A pair of Y-axis guide rails 350 may be coupled to the X-axis transfer table 240 in the Y-axis direction.

The Y-axis guide rail 350 may be disposed parallel to the Y-axis lead screw 310 .

A pair of Y-axis guide rails 350 may be disposed above and below the X-axis transport table 240 based on the Y-axis lead screw 310 .

A pair of Y-axis guide blocks 360 are coupled to the Y-axis guide rail 350 to guide the Y-axis transport table 340 in the Y-axis direction.

The Y-axis transport table 340 may be coupled to the Y-axis guide block 360 .

1 to 5, the Z-axis transfer unit 400 is configured to move the extrusion unit 500 in the Z-axis direction.

The Z-axis transfer unit 400 may include a Z-axis lead screw 410, a Z-axis lead nut 420, a Z-axis drive motor 430, and a z-axis transfer table 440.

The Z-axis transfer unit 400 may further include a z-axis guide rail 450 and a z-axis guide block 460 .

The Z-axis transfer unit 400 may further include a Z-axis position sensor (not shown) capable of detecting the position of the Z-axis lead nut 420, the z-axis transfer table 440, or the z-axis guide block 460.

The Z-axis lead screw 410 is a component for moving the Z-axis lead nut 420 in the Z-axis direction.

The Z-axis lead screw 410 may be coupled to the Y-axis transfer table 340 in the Z-axis direction.

The Z-axis lead nut 420 is coupled to the Z-axis lead screw 410 to move the z-axis transfer table 440 in the Z-axis direction.

The Z-axis lead nut 420 may be coupled to the z-axis transfer table 440 .

The Z-axis drive motor 430 is configured to rotate the Z-axis lead screw 410 .

The Z-axis drive motor 430 may be coupled to the Y-axis transfer table 340 to rotate the Z-axis lead screw 410 .

When the Z-axis drive motor 430 rotates the Z-axis lead screw 410 , the Z-axis lead nut 420 may move along the Z-axis lead screw 410 .

The z-axis transfer table 440 is a work table that is coupled to the Z-axis lead nut 420 and moves in the Z-axis direction.

The z-axis transfer table 440 may be coupled to the extrusion unit 500 .

The z-axis guide rail 450 is configured to guide the z-axis guide block 460 in the Z-axis direction.

A pair of z-axis guide rails 450 may be coupled to the Y-axis transfer table 340 in the Z-axis direction.

The z-axis guide rail 450 may be disposed parallel to the Z-axis lead screw 410 .

A pair of z-axis guide rails 450 may be disposed on the left and right sides of the Y-axis transfer table 340 based on the Z-axis lead screw 410 .

A pair of z-axis guide blocks 460 are coupled to the z-axis guide rail 450 to guide the z-axis transport table 440 in the Z-axis direction.

The z-axis guide block 460 may be coupled to the z-axis transfer table 440 .

1 to 5, the extrusion unit 500 is configured to print a three-dimensional shape by extruding the composite solution 20 filled with waste paper into the work area 110 of the table 100.

Since the extrusion unit 500 is coupled to the Z-axis transfer unit 400, the Z-axis transfer unit 400 is coupled to the Y-axis transfer unit 300, and the Y-axis transfer unit 300 can be coupled to the X-axis transfer unit 200, the extrusion unit 500 can move in the X-axis, Y-axis, or Z-axis directions on the work area 110 of the table 100.

The extrusion part 500 includes a mounting part 510 coupled to the Z-axis transfer part 400; A cylinder 540 coupled to the mounting portion 510 and filled with the waste paper composite solution 20; A nozzle 550 coupled to the lower portion of the cylinder 540 and extruding the waste paper composite solution 20; A piston 560 that moves up and down inside the cylinder 540; And coupled to the mounting portion 510 may include an extrusion driving unit 570 for elevating the piston 560.

1 to 5, the mounting portion 510 is a configuration for fixing the cylinder 540 and the extrusion driving portion 570.

The mounting unit 510 includes a first cradle 511 coupled to the Z-axis transfer unit 400 and fixing the lower portion of the cylinder 540; a pair of support bars 512 disposed in parallel with the cylinder 540 and having lower portions coupled to the first cradle 511; A second cradle 513 coupled to the upper portion of the support bar 512 and fixing the upper portion of the cylinder 540; and a third cradle 514 disposed between the first cradle 511 and the second cradle 513 and coupled to the support bar 512 to fix the cylinder 540 .

The first holder 511 is configured to fix the lower part of the cylinder 540 .

The first holder 511 may be coupled to the z-axis transfer unit 440 of the Z-axis transfer unit 400 .

The first cradle 511 may be formed to surround all or part of the cylindrical cylinder 540 .

The support bar 512 supports the first cradle 511 , the second cradle 513 , and the third cradle 514 .

A pair of support bars 512 may be disposed in the Z-axis direction parallel to the cylinder 540 .

A pair of support bars 512 may be disposed on the left and right sides of the cylinder 540 .

A first cradle 511 may be coupled to a lower portion of the support bar 512 and a second cradle 513 may be coupled to an upper portion of the support bar 512 .

The second holder 513 is configured to fix the upper part of the cylinder 540.

The second holder 513 may be coupled to an upper portion of the support bar 512 .

The height of the second holder 513 coupled to the support bar 512 can be adjusted.

The second holder 513 may be formed to cover the top of the cylindrical cylinder 540 .

The rod 561 of the piston 560 may pass through the second holder 513 and move up and down.

The second holder 513 may be coupled to the upper portion of the cylinder 540 to cover the upper portion of the cylinder 540 .

The second cradle 513 may be coupled with an extrusion driver 570 that rotates the rod 561 of the piston 560 .

The second cradle 513 may be coupled to the extrusion drive motor 571 of the extrusion drive unit 570 and the extrusion gear unit 572 .

The third holder 514 is configured to fix the middle part of the cylinder 540 .

The third cradle 514 may be coupled to the middle portion of the support bar 512 .

The height of the third holder 514 coupled to the support bar 512 can be adjusted.

The third cradle 514 may be coupled to the z-axis transporter 440 of the Z-axis transporter 400 together with the first cradle 511 .

The third cradle 514 may be disposed between the first cradle 511 and the second cradle 513 .

The third cradle 514 may be formed to surround all or part of the cylindrical cylinder 540 .

1 to 5, the cylinder 540 is configured to be filled with the waste paper composite solution 20 therein.

The cylinder 540 may be formed in a cylindrical shape with a chamber formed therein and an open top and bottom.

The piston 560 of the cylinder 540 may move up and down along the chamber.

A nozzle 550 extruding the waste paper composite solution 20 may be coupled to the lower portion of the cylinder 540.

The cylinder 540 may be coupled with a second cradle 513 at the top of which the rod 561 of the piston 560 may pass through and move up and down.

The cylinder 540 may be coupled to a buffer unit 580 at a lower portion of the chamber.

An insertion groove 581 into which the head 562 of the piston 560 is engaged may be formed at an upper portion of the shock absorber 580 .

A flow path may be formed in the center of the shock absorber 580 in the X-axis direction.

When the head 562 of the piston 560 descends, the waste paper composite solution 20 between the insertion groove 581 of the shock absorber 580 and the head 562 of the piston 560 may move to the nozzle 550 along the flow path of the shock absorber 580.

When the head 562 of the piston 560 descends beyond the allowable range, the shock absorber 580 is compressed to prevent the cylinder 540 or the nozzle 550 from being damaged.

The cylinder 540 may further include a pressure sensor (not shown) capable of measuring the pressure of the waste paper composite solution 20 filled in the chamber.

The cylinder 540 may be coupled with a supply line 541 for supplying the waste paper composite solution 20.

The supply line 541 may supply the waste paper composite solution 20 from which air is removed through the defoamer to the cylinder 540 .

The supply line 541 is a passage connecting the chamber of the cylinder 540 and the supply device.

The supply line 541 may be coupled to the side of the cylinder 540.

The supply line 541 may include a valve for opening and closing.

After the waste paper composite solution 20 filled in the chamber of the cylinder 540 is used, the cylinder 540 may refill the waste paper composite solution 20 into the chamber through the supply line 541 .

The cylinder 540 may supply water for cleaning to the chamber through the supply line 541 .

Water supplied to the chamber of the cylinder 540 cleans the inside of the chamber and may be discharged to the outside through the nozzle 550 .

Water discharged from the nozzle 550 after cleaning the chamber of the cylinder 540 may be collected in the tank 130 through the drain 120 of the table 100 .

Water collected in the tank 130 after washing the chamber of the cylinder 540 may be supplied to the cylinder 540 again through the circulation pump 140 .

Water supplied from the circulation pump 140 to the cylinder 540 may move through the recovery line 150 .

The return line 150 may be directly connected to the cylinder 540 or connected to the supply line 541 .

The water collected in the tank 130 may be reused for cleaning the chamber of the cylinder 540 through the circulation pump 140 and the return line 150.

The return line 150 may include a valve for opening and closing.

Referring to Figures 1 to 5, the nozzle 550 is a component for extruding the waste paper filled in the cylinder 540 by pressing the composite solution 20 with the piston 560.

Nozzle 550 may be coupled to a lower portion of cylinder 540 .

The nozzle 550 may be detached from the lower part of the cylinder 540 .

A flow path for extruding the waste paper composite solution 20 may be formed at the center of the nozzle 550 .

A cross section of the passage may be formed in a circular or polygonal shape.

Referring to FIG. 7 , the nozzle 550 may have a compaction unit 551 protruding around the lower outlet.

The compaction unit 551 may be formed so that the outlet circumference of the lower part of the nozzle 550 expands outward.

The compaction unit 551 may have a lower surface parallel to the work area 110 .

The compaction unit 551 may flatten the waste paper extruded through the nozzle 550 by pressing the composite solution 20 .

Since the compaction unit 551 can be pressed while stacking the waste paper composite solution 20 again on the flattened waste paper composite solution 20, the bonding strength between the stacked waste paper composite solutions 20 can be improved.

Since the compaction unit 551 can press the flattened waste paper composite solution 20 while stacking the waste paper composite solution 20 again, a three-dimensional shape of excellent quality can be produced.

The compaction unit 551 may be formed such that an outer circumference connecting the upper and lower surfaces forms a curve.

If the outer circumference of the compaction unit 551 is formed to form a curve, it is possible to prevent the compaction unit 551 from getting caught when extruded waste paper passes through the composite solution 20 .

1 to 5, the piston 560 is configured to extrude the waste paper filled in the chamber of the cylinder 540 into the nozzle 550 by pressing the composite solution 20.

The piston 560 may move up and down inside the cylinder 540 by the extrusion driving unit 570 .

The piston 560 includes a rod 561 that moves up and down by the extrusion drive unit 570; And it may include a head 562 coupled to the lower portion of the rod 561 and moving up and down inside the cylinder 540 .

The rod 561 is a component for elevating the head 562 coupled to the lower portion.

The rod 561 may be formed in a circular bar shape.

The rod 561 may be threaded on an outer surface.

The rod 561 may be coupled to the extrusion gear unit 572 of the extrusion drive unit 570 to move up and down.

The head 562 is configured to press the composite solution 20 with waste paper filled in the chamber of the cylinder 540.

The upper part of the head 562 may be formed in a conical shape with a side surface contacting the inner side of the cylinder 540 and a lower part of the head 562 having a smaller diameter in a downward direction.

The head 562 of the piston 560 may be formed to be engaged with the insertion groove 581 formed on the top of the shock absorber 580 .

One or more O-rings 563 may be coupled to the upper side of the head 562 .

1 to 5, the extrusion drive unit 570 is configured to elevate the piston 560.

The extrusion driving unit 570 may be coupled to the mounting unit 510 .

The extrusion driving unit 570 may be coupled to the second cradle 513 of the mounting unit 510 .

The extrusion driving unit 570 may elevate the rod 561 protruding upward from the second cradle 513 .

The extrusion drive unit 570 may include an extrusion drive motor 571 and an extrusion gear unit 572 .

The extrusion drive motor 571 may be coupled to the second cradle 513 to operate the extrusion gear unit 572 .

The extrusion gear unit 572 is coupled to the second cradle 513 to move the rod 561 of the piston 560 up and down.

In the 3D printer using the waste paper composite solution according to the present invention, the cylinder 540 and the nozzle 550 may be configured as the cartridge 530.

If the cylinder 540 and the nozzle 550 are configured as a cartridge 530, several cartridges 530 can be replaced and used.

The used cartridge 530 can be reused by refilling the composite solution 20 with waste paper.

The 3D printer utilizing the waste paper composite solution according to the present invention may further include a control unit.

The control unit may control the operation of the drive motor, the circulation pump 140, the valve, the sensor, and the waste paper composite solution 20 supply device.

The control unit may perform a three-dimensional print job using information such as a drawing input by a user and information transmitted from various sensors.

In the foregoing, although specific embodiments of the present invention have been described and shown, the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. It is obvious to those skilled in the art.

Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and modified embodiments should be said to belong to the scope of the present invention.

20: complex solution 100: table
110: work area 120: drainage
130: tank 140: circulation pump
150: recovery line 200: X-axis transfer unit
210: X-axis lead screw 220: X-axis lead nut
230: X-axis drive motor 240: X-axis transfer table
250: X-axis guide rail 260: X-axis guide block
300: Y-axis transfer unit 310: Y-axis lead screw
320: Y-axis lead nut 330: Y-axis drive motor
340: Y-axis transport stand 350: Y-axis guide rail
360: Y-axis guide block 400: Z-axis transfer unit
410: Z-axis lead screw 420: Z-axis lead nut
430: Z-axis drive motor 440: z-axis transfer table
450: z-axis guide rail 460: z-axis guide block
500: extrusion part 510: mounting part
511: first cradle 512: support bar
513: second cradle 514: third cradle
530: cartridge 540: cylinder
541: supply line 550: nozzle
551: compaction unit 560: piston
561: rod 562: head
563: O-ring 570: extrusion drive unit
571: extrusion drive motor 572: extrusion gear unit
580: buffer part 581: insertion groove

Claims (10)

A table having a working area and having a drainage channel formed thereon;
X-axis transfer unit coupled to the table;
a Y-axis transfer unit coupled to the X-axis transfer unit;
Z-axis transfer unit coupled to the Y-axis transfer unit; and
The waste paper coupled to the Z-axis transport unit includes an extrusion portion filled with a complex solution,
The extrusion part,
a mounting portion coupled to the Z-axis transfer portion; a cylinder coupled to the mounting part and filled with the waste paper composite solution; a nozzle coupled to the lower part of the cylinder and through which the waste paper composite solution is extruded; a piston moving up and down inside the cylinder; a shock absorber that comes into contact with the nozzle and is coupled to the inside of the cylinder and is compressed when the piston descends beyond an acceptable range; and an extrusion drive coupled to the mounting portion and elevating the piston.
The cylinder is coupled to a supply line for supplying the waste paper composite solution, and the inside can be washed by supplying water to the supply line,
The drainage channel is formed as a groove or hole through which water is washed inside the cylinder and discharged to the outside of the cylinder or washed and discharged from the work area.
3D printer using the waste paper composite solution, characterized in that the extrusion unit extrudes the waste paper composite solution in the work area to produce a three-dimensional shape. delete According to claim 1,
The mounting part,
A first cradle coupled to the Z-axis transfer unit and fixing the lower portion of the cylinder;
a pair of support bars disposed parallel to the cylinder and having lower portions coupled to the first cradle;
a second cradle coupled to an upper portion of the support bar and fixing an upper portion of the cylinder; and
The 3D printer utilizing the waste paper composite solution, characterized in that it comprises a third holder disposed between the first holder and the second holder, coupled to the support bar, and fixing the cylinder. According to claim 3,
the piston,
a rod that moves up and down by the extrusion driving unit; and
A 3D printer utilizing a waste paper composite solution, characterized in that it comprises a head coupled to the lower portion of the rod and ascending and descending inside the cylinder. According to claim 4,
The second holder covers the upper part of the cylinder,
The rod is coupled through the second cradle,
The extrusion driving unit is coupled to the second cradle and 3D printer utilizing a waste paper composite solution, characterized in that for elevating the rod protruding to the top of the second cradle. delete delete delete According to claim 1,
The table is coupled with a tank capable of containing water moving to the drain,
3D printer using a waste paper composite solution, characterized in that the water contained in the tank is moved to the supply line and reused. According to claim 1,
The nozzle is a 3D printer using a waste paper composite solution, characterized in that a compaction portion is formed that protrudes around the outlet and presses the extruded waste paper composite solution.

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