KR102533373B1 - An architectural 3d-printer with z-axis of zipper-chain - Google Patents

Abstract

The present invention relates to a 3D printer for construction, and more particularly, since the Z-axis of the nozzle is formed as a zipper chain, the nozzles mounted on the Z-axis and the Z-axis do not move higher than the Y-axis as the Z-axis moves up and down, It relates to an architectural 3D printer with a zipper chain type Z-axis that can print buildings using a 3D printer even in a space where movement in the Z-axis is limited,
An article output space is provided on the inside, and a body portion provided with casters provided to be freely movable on the bottom side; a driving unit which is additionally installed on the body part, has a nozzle part linked thereto, and moves the nozzle part according to a preset program; and a nozzle unit that discharges concrete while moving in X, Y, and Z axes while being installed in the driving unit to form a three-dimensional building. A Z-axis drive assembly to which the nozzle unit is mounted and moving the nozzle unit in the vertical Z-axis, and a Y-axis drive assembly to move the Z-axis drive assembly in the Y-axis while the Z-axis drive assembly is mounted And, it is installed on the upper side of the body portion, and the Y-axis and Z-axis drive assemblies are installed in conjunction with each other, and the X-axis drive assembly moves the Y-axis and Z-axis drive assemblies to the X-axis. Provides a 3D printer for construction with a zipper chain type Z-axis.

Description

AN ARCHITECTURAL 3D-PRINTER WITH Z-AXIS OF ZIPPER-CHAIN}

The present invention relates to a 3D printer for construction, and more particularly, to a 3D printer for construction having a zipper chain type Z-axis in which the Z-axis of a nozzle is formed of a zipper chain.

In general, reinforced concrete structures have high compressive strength and are widely used as structures such as walls and slabs of various buildings.

Such a reinforced concrete structure generally arranges and installs reinforcing bars on a foundation, forms a formwork (formwork) surrounding the installed reinforcing bars, pours concrete therebetween, and then removes the formwork again when the concrete is cured. has been constructed

However, according to the conventional construction method of reinforced concrete structures, since the formwork must be installed and the formwork must be dismantled again after the concrete is cured, the number of processes is many and complicated, which makes the work cumbersome and increases the work man-hours. There was a problem of delaying the entire construction period, and since the formwork is not a permanent component but an element that must be demolished, creating and dismantling the formwork inevitably causes waste of materials and construction costs.

On the other hand, in recent years, 3D printing manufacturing technology for shaping a three-dimensional product through printing has been in the limelight, and attempts have been made to manufacture concrete structures using 3D printing to solve the above conventional problems.

(Document 1) Patent Registration No. 10-1597490 (registered on February 18, 2016) (Document 2) Patent Registration No. 10-1966700 (registered on April 2, 2019) (Document 3) Patent Registration No. 10-1918754 (registered on November 8, 2018) (Document 3) Patent Registration No. 10-1995637 (registered on June 26, 2019)

The present invention was made to solve the above problems, and by using a zipper-type chain as a Z-axis, a 3D printer for construction with a zipper-chain-type Z-axis capable of producing buildings or sculptures in a space where movement up and down is restricted. It is intended to provide

In order to achieve the above object, the present invention is provided with an article output space on the inside, a body portion provided with casters provided so as to be freely movable on the bottom side; a driving unit which is additionally installed on the body part, has a nozzle part linked thereto, and moves the nozzle part according to a preset program; and a nozzle unit that discharges concrete while moving in X, Y, and Z axes while being installed in the driving unit to form a three-dimensional building. A Z-axis drive assembly to which the nozzle unit is mounted and moving the nozzle unit in the vertical Z-axis, and a Y-axis drive assembly to move the Z-axis drive assembly in the Y-axis while the Z-axis drive assembly is mounted And, it is installed on the upper side of the body portion, and the Y-axis and Z-axis drive assemblies are installed in conjunction with each other, and the X-axis drive assembly moves the Y-axis and Z-axis drive assemblies to the X-axis. Provides a 3D printer for construction with a zipper chain type Z-axis.

In the present invention, the Z-axis drive assembly includes a zipper chain portion comprising a zipper chain on one side and a zipper chain on the other side that are engaged with each other while going down to the lower side and split into both sides while going up to the upper side; a zipper chain housing that leads the zipper chain portion to be split into two sides at the upper side and move up and down by interlocking with each other at the lower side; a pair of sprockets mounted inside the zipper chain housing to allow the one zipper chain and the other zipper chain to descend by engaging with each other at both sides of the one zipper chain and the other zipper chain, or to move by being divided into both sides; A gear unit composed of one driven gear, the other driven gear, and a driving gear for transmitting rotational force to the one driven gear, which are axially connected to each of the sprockets to provide rotational force to the pair of sprockets and rotate in engagement with each other; and a power transmission unit that applies rotational force to a driving gear connected to the same rotational axis as the one-side driven gear.

In the present invention, the zipper chain housing includes a wing on one side formed in the shape of a tube to guide one side of the zipper chain when moving; The other side wing formed in the shape of a tube to guide the movement of the other zipper chain; and a main housing body in which the one wing part and the other wing part are connected to both sides, the one zipper chain and the other zipper chain are engaged with each other and the pair of sprockets and the gear part are mounted inside. to be

In the present invention, the zipper chain housing is mounted on the top of a shelf that is mounted on the Y-axis drive assembly and moves along the Y-axis, and the shelf is attached to the front linear unit and the rear linear unit of the Y-axis drive assembly. It is mounted and a through hole is formed in the central side, characterized in that the zipper chain housing is fixedly mounted through the through hole.

In the present invention, one side guide sprocket and the other guide sprocket for fixing the position of one side zipper chain and the other side zipper chain and guiding their movement are mounted on the lower side of one side wing and the other side wing, respectively. The one side guide sprocket, A solenoid motor for limiting the movement of the zipper chain unit is further mounted to act as a stopper to prevent the end of the zipper chain from moving beyond a predetermined position.

The present invention has the advantage that it is possible to manufacture a sculpture or building of a certain height even in a zone where movement in the Z axis is restricted.

In addition, since the present invention uses a zipper chain, there is no need for a Z-axis shaft, so the configuration is simple and the manufacturing of the 3D printer is easy.

1 is an overall perspective view of a 3D printer for construction having a zipper chain type Z-axis according to the present invention.
Figure 2 is a partial perspective view of a 3D printer for construction having a zipper chain type Z-axis according to the present invention.
Figure 3 is a partial perspective view of the shelf of the architectural 3D printer having a zipper chain type Z-axis according to the present invention.
Figure 4 is a partial perspective view of a shelf mounted on the Y-axis drive assembly of the architectural 3D printer having a zipper chain type Z-axis according to the present invention.
Figure 5 is a perspective view of the Z-axis drive assembly of the architectural 3D printer having a zipper chain type Z-axis according to the present invention.
Figure 6 is a structural diagram of the zipper chain of the Z-axis drive assembly of the architectural 3D printer having a zipper chain type Z-axis according to the present invention.
7 is a perspective view of a gear unit and a motor of a Z-axis drive assembly of a 3D printer for construction having a zip-chain type Z-axis according to the present invention.
Figure 8 is a structural diagram of the gear unit of the Z-axis drive assembly of the architectural 3D printer having a zipper chain type Z-axis according to the present invention.
9 is a structural diagram of a zipper chain and a guide sprocket of a Z-axis drive assembly of a 3D printer for construction having a zipper chain-type Z-axis according to the present invention.

Additional objects, features and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention may make various changes and may have various embodiments, and the examples described below and shown in the drawings are not intended to limit the present invention to specific embodiments. No, it should be understood to include all changes, equivalents or substitutes included in the spirit and scope of the present invention.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In addition, terms such as "...unit", "...unit", and "...module" described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and It can be implemented as a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

1 is an overall perspective view of a 3D printer for construction having a zipper chain type Z-axis according to the present invention, and FIG. 2 is a partial perspective view of a 3D printer for construction having a zipper chain type Z-axis according to the present invention.

1 shows an overall perspective view of a 3D printer for construction having a zipper chain type Z-axis according to the present invention. As shown in the drawing, the 3D printer 1 for construction according to the present invention has an article output space 110 provided inside and a body 100 provided with casters 104 so as to be freely movable on the bottom surface and , To the nozzle unit 300 installed in the body unit 100 and discharging concrete while moving in the X, Y, and Z axes in a state installed in the driving unit 200 and the driving unit 200 to form a three-dimensional building. It consists of The driving unit 200 is connected to the nozzle unit 300 and may perform an operation of moving the nozzle unit 300 based on a preset program.

The body part 100 should have a structure in which the building manufactured by the 3D printer 1 for construction can be stored, that is, the building is formed inside the body part 100. Accordingly, the body portion 100 has a rectangular box shape as a whole and is made of a metal material such as a steel pipe or section steel. Looking at the body part 100 in detail, as shown in FIG. 1, the upper body 101 and the lower body 103 and the side body 102 connecting the upper body 101 and the lower body 103. It is done. The upper body 101 includes a pair of upper X-axis bodies 101a equipped with an X-axis drive assembly 230 and a pair of upper Y-axis bodies connected to both ends of the pair of upper X-axis bodies 101a. It may be composed of an axis body (101b). The side body 102 is connected to the lower part of the upper body 101 and serves to support the upper body 101 . In addition, the lower body 103 is a pair of lower X-axis bodies 103a connected to the lower portion of the side body 102, and on either side of the ends of the pair of lower X-axis bodies 103a. It consists of a lower Y-axis body 103b connecting the lower X-axis body 103a to each other. The caster 104 is mounted on the bottom of the lower body 103 to enable movement, and the caster 104 A position fixing member 105 for fixing the movement of the 3D printer 1 for construction may be provided on one side. The position fixing member 105 is formed in a bolt shape and can be configured to adjust its height. When the position fixing member 105 is extended beyond the height of the caster 104 by turning, the movement of the 3D printer 1 for construction may be fixed.

As shown in FIGS. 1 and 2 , the driving unit 200 includes a Z-axis drive assembly 210 for moving the nozzle unit 300 in the vertical Z-axis and a Z-axis drive assembly in the left-right direction Y. It consists of a Y-axis drive assembly 220 that moves in the axis, and an X-axis drive assembly 230 that moves the Y-axis and Z-axis drive assemblies in the X-axis, which is the forward and backward direction.

Referring to Figures 1 and 2 to describe the X-axis drive assembly 230, the X-axis drive assembly 230 is provided on both sides of the upper X-axis body (101a). The X-axis drive assembly 230 includes an X-axis rotation shaft 232a for rotationally driven on one side of the upper X-axis body 101a, a shaft drive motor 231 for driving the X-axis rotation shaft 232a, and Y A stopper 233a for limiting the movement of the shaft drive assembly and a wire tray 234 are provided. An X-axis guide 232b for guiding the movement of the Y-axis drive assembly 210 and a stopper 233b for limiting the movement of the Y-axis drive assembly 210 are provided on the other upper X-axis body 101a. Sensors may be mounted to the stoppers 233a and 233b, if necessary.

3 is a partial perspective view of a shelf of a 3D printer for construction having a Z-axis zipper chain type according to the present invention, and FIG. It is a partial perspective view.

The Y-axis drive assembly 220 will be described with reference to FIGS. 2 to 4 . The Y-axis drive assembly 220 includes Y-axis drive bodies 221: 221a and 221b formed of steel pipes or beams, and Y-axis guides 222: 222a and 222b mounted on the upper surface of the Y-axis drive body 221. ) and stoppers 223: 223a, 223b installed on the upper surface of the Y-axis drive body 221 and located at both ends of the Y-axis guides 222: 222a, 222b to limit the movement of the shelf 225; , The shaft bush 224a mounted on the bottom surface of both ends of the Y-axis drive body 221 and mounted on the X-axis rotation shaft 232a, the guide bush 224b mounted on the X-axis guide 232b, and the Y-axis guide ( A shelf 225 mounted on the Y-axis guide 222 and moving in the Y-axis direction along the Y-axis guide 222, and mounted on the front side of the shelf 225, the shelf 225 can move along the Y-axis guide 222. It is composed of a shelf driving motor 227 that gives driving force to be, and a wire tray 226 installed on the front side of the Y-axis drive body 221.

Referring to Figure 2 will be described in detail the Y-axis drive body (221). As shown in the drawing, the Y-axis drive body 221 is equipped with a front guide mounting body 221a to which the front Y-axis guide 222a is mounted and a rear guide to which the rear Y-axis guide 222b is mounted. It connects both ends of the body 221b, the front guide mounting body 221a and the rear guide mounting body 221b, and is mounted on the bottom of the X-axis rotation shaft 232a as the X-axis rotation shaft 232a rotates. One connecting body 221c having a shaft bush 224a moving along the X axis, and the other connecting body having a guide bush 224b mounted on the X axis guide 232b on the bottom and moving along the X axis ( 221d). One side connection body 221c extends from the upper side and is connected to the wire tray 234. In addition, the side of the front guide mounting body 221a is a pinion 221-1a for allowing the lathe 225 to which the Z-axis drive assembly 210 is mounted to move along the Y-axis guides 232:232a and 232b. attached to In addition, the tray support body 221-2a on which the wire tray 226 is seated is further mounted on the lower part of the pinion 221-1a on the front guide mounting body 221a, and the wire tray 226 is the tray support body ( 221-2a), and wires connected to the shelf driving motor 227 are placed on the wire tray 226.

Referring to FIG. 2 , the Z-axis drive assembly 210 is mounted on a lathe 225 . More specifically, as shown in FIG. 3, the shelf 225 includes a front shelf body 225-1a formed parallel to the upper side of the front Y-axis guide 222a and a rear Y-axis guide 222b. The rear shelf body 225-1b formed side by side on the upper side of the front shelf body 225-1a and the rear shelf body 225-1b, one side shelf body 225-2a and the other side installed at both ends of the shelf body 225-1b Shelf body 225-2b and a pair of shelf guide bushes 225-3a installed on the bottom of one side shelf body 225-2a and installed on the front Y-axis guide 222a and the rear Y-axis guide 222b ), the other shelf guide bushes 225-3b, a pair of which are installed on the bottom surface of the other shelf body 225-2b and installed on the front Y-axis guide 222a and the rear Y-axis guide 222b, and the front shelf body It is installed on (225-1a) and consists of a motor bracket (225-4) to which a shelf driving motor (227) is mounted. Since the body of the shelf 225 is formed on the front, rear and side surfaces, a through hole is formed in the center. A Z-axis drive assembly 210 is mounted in the through hole and connected to the lathe drive motor 227.

4 is a perspective view showing the shelf 225 viewed from the front side. As shown in the figure, the rack 227-1 mounted on the lathe driving motor 227 is engaged with the pinion 221-1a mounted on the front guide mounting body 221a to rotate the lathe driving motor 227. It moves on the Y-axis along the pinion 221-1a by As the lathe drive motor 227 rotates, the rack 227-1 moves along the pinion 221-1a, so the lathe 225 moves on the Y-axis, and accordingly, the Z axis mounted on the lathe 225 The axis drive assembly 210 is movable along the Y-axis.

Figure 5 is a perspective view of the Z-axis drive assembly of the architectural 3D printer having a zipper chain type Z-axis according to the present invention, Figure 6 is a zipper chain of the Z-axis drive assembly of the architectural 3D printer having a zipper chain type Z-axis according to the present invention 7 is a perspective view of a gear unit and a motor of a Z-axis drive assembly of a 3D printer for construction having a zipper chain type Z-axis according to the present invention, and FIG. 8 is a perspective view of a 3D printer for construction having a zipper chain type Z-axis according to the present invention It is a structural diagram of the gear part of the Z-axis drive assembly, and FIG. 9 is a structural diagram of a zipper chain and a guide sprocket of the Z-axis drive assembly of a 3D printer for construction having a zipper chain-type Z-axis according to the present invention.

5 to 9 show the Z-axis drive assembly 210 and the nozzle unit 300 mounted on the Z-axis drive assembly 210 . 5 is an overall perspective view of the Z-axis drive assembly 210 and the nozzle unit 300 . As shown in the drawing, the Z-axis drive assembly 210 includes a zipper chain unit 211 to which a nozzle unit 300 is mounted at the lower end, and a zipper chain housing that engages or splits while the zipper chain unit 211 moves up and down. 212, a pair of sprockets 213 mounted inside the zipper chain housing 212 to engage or split the zipper chain part 211, and a gear part 214 for transmitting power to the sprocket 213 And, it consists of a power transmission unit 215 for transmitting power to the gear unit 214.

6 shows a zipper chain part 211 and a sprocket 213. The zipper chain part 211 includes a zipper chain 211a on one side and a zipper chain 211b on the other side. The support plate 304 of the nozzle unit 300 is mounted at the lower end of the zipper chain unit 211 . As described above, the zipper chain part 211 is composed of one zipper chain 211a and the other zipper chain 211b.

5 shows a zipper chain housing 212 . The zipper chain housing 212 is composed of one side wing portion 212a, the other side wing portion 212b, and a main housing body 212c to which one side wing portion 212a and the other side wing portion 212b are connected. One side wing portion 212a is preferably made of a steel pipe so that one side zipper chain 211a can serve as a guide when moving. One side zipper chain 211a moves along one side wing portion 212a formed of a horizontal tube while interlocking with the other side zipper chain 211b to move downward or being separated from each other to move along one side wing portion 212a. The other side wing portion (212b) is also the same as the one side wing portion (212a). The other zipper chain 211b moves along the other wing part 212b made of a horizontal pipe and engages with one zipper chain 211a to move downward or splits and moves along the other wing part 212b. That is, the one wing part 212a and the other wing part 212b serve as guides when the zipper chain part 211 moves. In addition, as shown in detail in FIG. 9 , one side guide sprocket 216a is mounted on the bottom surface of one side wing part 212a so that one side zipper chain 211a can move smoothly. The one-side guide sprocket 216a is mounted on the one-side sprocket support plate 217a, and the one-side guide sprocket 216a can be driven by the solenoid 218 to prevent the one-side zipper chain 211a from moving excessively. . A sensor 219 may be further installed to allow the one side zipper chain 211a to move only to a certain length, and when the sensor 219 senses the end of the one side zipper chain 211a, the solenoid 218 is operated to It serves as a stopper so that one side guide sprocket 216a does not move. In addition, the other side guide sprocket 216b is mounted on the other side wing portion 212b. The other guide sprocket 216b of the other wing 212b is also mounted on the sprocket support plate 217b to guide the other zipper chain 211b. A solenoid and a sensor may be further mounted to the other guide sprocket 216b as needed. One guide sprocket 216a is fixed to one guide sprocket rotation shaft 216-1a and rotates together with the rotation of the solenoid 218, and the other guide sprocket 216b is fixed to the other guide sprocket rotation shaft 216-1b. and rotates When the other guide sprocket 216b is also driven by the solenoid 218, it rotates along with the rotation of the sprocket rotation shaft 216-1b.

As shown in FIG. 5, one side wing part 212a and the other side wing part 212b are sprockets 213 so that the horizontally moving one side zipper chain 211a and the other side zipper chain 211b can be engaged with each other and go down. It is connected to the main housing body 212c to which it is mounted. The drive of the sprocket 213 causes one side zipper chain 211a and the other side zipper chain 211b to be engaged with each other or to be separated from each other so that they can be discharged through the wing portion. The sprocket 213 is composed of a pair of one side sprocket 213a and the other side sprocket 213b. In addition, the nozzle unit 300 is mounted at the lower end of the zipper chain part 211 where one zipper chain 211a and the other zipper chain 211b are engaged.

The nozzle part 300 shown in FIG. 5 includes a nozzle fixing plate 304 connected to the zipper chain part 211, a nozzle 301 fixedly mounted to the nozzle fixing plate 304, and a nozzle 301 connected to the nozzle 301. Consists of a hose (302). The nozzle 301 is fixed by a nozzle fixing member 305 and connected to the hose 302 by a joint 303.

FIG. 6 schematically shows that one side zipper chain 211a and the other side zipper chain 211b are engaged or separated by the driving of one side sprocket 213a and the other side sprocket 213b.

7 and 8 show a gear part 214 for driving one side sprocket 213a and the other side sprocket 213b. As shown in the drawing, in order to drive the sprocket 213, a drive gear 214c first mounted on the sprocket motor 215, and one side driven gear 214a that engages with the drive gear 214c and receives rotational force, and one side It consists of the other driven gear 214b that rotates in mesh with the driven gear 214a. One side driven gear 214a is axially connected to one side sprocket 213a and rotates together, and the other side driven gear 214a is axially connected to the other side sprocket 213b and rotates together while one side zipper chain 211a and the other side zipper chain (211b) provides rotational force. The driving gear 214c is mounted on the motor rotational shaft 214-1c, and the one-side driven gear 214a and one-side sprocket 213a are shaft-connected to the one-side rotational shaft 214-2a to rotate together, and the other driven gear 214b ) and the other side sprocket 213b are shaft-connected to the other rotation shaft 214-2b and rotate together. One zipper chain 211a and the other zipper chain 211b may be made of one zipper chain or a pair may be made of one zipper chain. In the drawing, a pair of zipper chains are shown as one set, and accordingly, a pair of sprockets 213 are also shown as one set.

Although not shown in the drawings, a controller is further provided. The controller controls the driving of each motor. In addition, the controller controls the movement of the X-axis drive assembly, the Y-axis drive assembly, and the Z-axis drive assembly through the control of the motor.

As described above, in the case of providing the Z-axis with the zipper chain 211, since the Z-axis does not move up and down, but moves horizontally to the left and right, the advantage is that it can be easily operated even when there is a limit to the driving of the Z-axis. there is

In addition, since there is no need for a guide for Z-axis movement, there is an advantage in that the structure is simple.

The embodiments described in this specification and the accompanying drawings merely illustrate some of the technical ideas included in the present invention by way of example. Therefore, since the embodiments disclosed in this specification are not intended to limit the technical idea of the present invention but to explain it, it is obvious that the scope of the technical idea of the present invention is not limited by these embodiments. All modified examples and specific examples that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be construed as being included in the scope of the present invention.

1: 3D printer for construction
100: body part 101: upper body
102: side body 103: lower body
104: caster 105: position fixing member
110: product output space
200: driving part
210: Z-axis drive assembly 211: Z-axis drive body
212: zipper chain housing 213: sprocket
214: gear unit 215: sprocket motor
216: guide sprocket 217: sprocket support plate
218: solenoid 219: sensor
220: Y-axis drive assembly 221: Y-axis drive body
222: Y-axis guide 223: stopper
224a: shaft bush 224b: guide bush
225: shelf 226: wire tray
227: lathe drive motor
230: X-axis drive assembly 231: shaft drive motor
232a: X-axis shaft 232b: X-axis guide
233: stopper 234: wire tray
300: nozzle unit 301: nozzle
302: hose 303: joint
304: support plate 305: nozzle fixing member

Claims (5)

An article output space is provided on the inside, and a body portion provided with casters provided to be freely movable on the bottom surface; a driving unit which is additionally installed on the body part, has a nozzle part linked thereto, and moves the nozzle part according to a preset program; And a nozzle unit installed in the driving unit and discharging concrete while moving in the X, Y, and Z axes to form a three-dimensional building;
the driver,
a Z-axis drive assembly to which the nozzle unit is mounted and which moves the nozzle unit in a vertical Z-axis;
a Y-axis drive assembly for moving the Z-axis drive assembly to the Y-axis while the Z-axis drive assembly is mounted; and
An X-axis drive assembly installed on the upper side of the body and moving the Y-axis and Z-axis drive assembly to the X-axis in a state in which the Y-axis and Z-axis drive assemblies are installed in conjunction with each other;
The z-axis drive assembly,
a zipper chain part composed of one zipper chain and the other zipper chain that are engaged with each other while going down to the lower side and split into both sides while going up to the upper side;
a zipper chain housing that leads the zipper chain portion to be split into two sides at the upper side and move up and down by interlocking with each other at the lower side;
A pair of sprockets installed inside the zipper chain housing to engage the one zipper chain and the other zipper chain at both sides of the one zipper chain and the other zipper chain to lower or be divided into both sides to move ,
The zipper chain housing,
One side wing portion formed in the shape of a pipe to guide the one side zipper chain when moving;
The other wing part formed in the shape of a tube to guide the movement of the other zipper chain; and
A main housing body in which the one wing part and the other wing part are connected to both sides, the one zipper chain and the other zipper chain are engaged with each other, and the pair of sprockets and gear parts are mounted inside,
The Z-axis drive assembly,
a one-side guide sprocket disposed on the one-side wing part to fix the position of the one-side zipper chain and guide its movement;
A 3D printer for construction with a zipper chain type Z-axis, characterized in that it further comprises; a solenoid motor for driving the one-side guide sprocket and limiting the movement of the zipper chain part.
According to claim 1,
The Z-axis drive assembly,
A gear unit composed of one driven gear, the other driven gear, and a driving gear for transmitting rotational force to the one driven gear, which are axially connected to each of the sprockets to provide rotational force to the pair of sprockets and rotate in engagement with each other; and
a power transmission unit that applies rotational force to a drive gear connected to the same rotation axis as the driven gear on one side;
A 3D printer for construction with a zipper chain type Z-axis, characterized in that consisting of.

delete According to claim 2,
The zipper chain housing is mounted on the top of a shelf that is mounted on the Y-axis drive assembly and moves along the Y-axis,
The shelf is mounted on the front Y-axis guide and the rear Y-axis guide of the Y-axis drive assembly, and a through hole is formed in the center side, and the zipper chain type Z-axis, characterized in that the zipper chain housing is fixedly mounted through the through hole 3D printer for construction.
According to claim 2,
On the lower side of the other wing,
A 3D printer for construction with a zipper chain type Z-axis, characterized in that the other guide sprocket for guiding the movement as well as fixing the position of the other zipper chain is mounted.

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