KR20190051403A - Easy attaching load arm device and 3d printer including the same - Google Patents

Abstract

The present invention relates to a one-touch rod arm device which is easily detachable to safely protect an output head from an external force when moving a three-dimensional printer, and to a three-dimensional printer comprising the same. The one-touch rod arm device comprises: a plate-shaped head mounting part on which a head assembly is installed; a rod part detachably connected to the head mounting part; and a fastening part hinged to the head mounting part for fastening or disassembling one end of the rod part connected to the head mounting part.

Description

[0001] The present invention relates to a one-touch load arm apparatus and a 3D printer including the same,

The present invention relates to a one-touch rod arm device that is easy to attach and detach and a 3D printer including the same, minimizes the time required for disassembling and assembling a 3D printer, The present invention relates to a one-touch load arm apparatus and a 3D printer including the same, which can safely protect an output head from an external force when the 3D printer is moved by allowing the output head to be easily stored in the printer.

Generally, a printer means a device for printing characters, drawings, etc. on a print object. And a printer device which is connected to a computer and printed on the ground are widely used for business use and home use.

Conventionally, a three-dimensional printer capable of forming a three-dimensional shape has emerged in the past, although the conventional printer was to carry out two-dimensional printing by spraying fine ink onto a paper or sheet material to be printed in a predetermined direction.

A three-dimensional printer, that is, a 3D printer, is an adder for producing a three-dimensional object by stacking materials on a plate while continuously spraying the material on the plate. The 3D printer is a device for producing 3D objects using signals such as computers and sensors. It is easy to use and highly scalable, so it can be extended from manufacturing to medical device companies.

In the past, these 3D printers have been used for purposes such as modeling and sample production prior to mass production. Recently, however, a technical basis has been created that can be used for mass production of products with a small number of small-volume products. In addition, it has been extended to be used for personal hobbies and the like beyond the industrial field, and many related prior arts are disclosed.

However, since the conventional 3D printer is large in size and complicated in structure, it takes a long time to disassemble and assemble.

In addition, if a predetermined shake is applied to the 3D printer when the 3D printer is moved, the output head of the 3D printer installed inside the 3D printer may swing and collide with the inner member, thereby damaging the output head.

If the output head of the 3D printer is damaged, the accuracy of the output is significantly reduced and the output head can be seriously changed. Since the output head is a member requiring precision, it is inevitable that an economic loss due to the purchase cost is inevitable if the price is generally high and the output head needs to be replaced.

If the output head is disassembled in order to prevent damage to the output head when the 3D printer is carried, the disassembly of the output head can not be easily disassembled because it is firmly attached by a screw or the like.

Korean Patent Publication No. 10-2015-0134185

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems in the prior art, and it is an object of the present invention to minimize the time required for disassembling and assembling a 3D printer, The present invention provides a one-touch load arm device that can easily detach and attach an output head to a printer, thereby enabling an output head to be separately stored and safely protecting an output head from an external force when the 3D printer is moved, and a 3D printer including the same.

In order to achieve the above-mentioned object, the present invention provides a head mounting structure comprising: a plate-shaped head mounting portion on which a head assembly is mounted; A rod portion detachably connected to the head mounting portion; And a fastening portion hinged to the head mounting portion for fastening or disassembling one end of the rod portion connected to the head mounting portion.

The fastening portion may include: a hinge band hinged to the head mounting portion; And a movable piece which is hinged to the hinge band and is bent many times so as to grasp an end portion of the rod portion, the slit being configured to receive the hinge band therein, wherein the hinge band The hinge band is held by the slit of the movable piece and is coupled to the head mounting portion while holding the end portion of the movable piece rod portion interlocked with the hinge band.

Further, the hinge band is characterized in that an outward piece for operating the rotation of the hinge band is projected toward the outside.

In addition, Plate connecting plate; And a pair of arms hinged to both ends of the connecting plate, wherein the connecting portion binds the connecting plate to the head mounting portion when one end of the rod portion is connected to the head mounting portion.

Further, the head mounting portion is characterized in that a stopper for restricting movement of the connecting plate by an interaction with the engaging portion is protruded upward.

In addition, the head mounting portion is formed with an attachment base on which an attachment plate is extended.

The movable piece may include: a first extension piece having one end hinged to the hinge band; A second extension extending vertically downward from the other end of the first extension; And a third extension piece extending perpendicularly to the inner side so as to be parallel to the first extension piece at the other end of the second extension piece.

In addition, the seating plate and the connecting plate are each formed with a fixing groove into which the second extending piece is inserted.

In addition, a plurality of the rod portions and the fastening portions are radially arranged along the outer periphery of the head mounting portion.

Further, an upper frame; A lower frame spaced upward and downward from the upper frame; And a plurality of vertical frames provided between the upper frame and the lower frame and having guide rods connecting the other ends of the rod portions; Wherein each of the upper frame, the lower frame, and the plurality of vertical frames is capable of being disassembled and assembled with respect to each other, wherein each of the vertical frames comprises: a beam extending in the upward and downward directions; An upper connecting member installed at an upper end of the beam and engaged with the upper frame; And a lower connecting member installed at a lower end of the beam and engaged with the lower frame.

Further, each of the upper connecting member and the lower connecting member includes: a first coupling plate; A third coupling plate spaced apart in the upward and downward directions in parallel with the first coupling plate; And a second coupling plate interposed between the first coupling plate and the third coupling plate, the second coupling plate having a smaller area than the first coupling plate and the third coupling plate.

Each of the upper frame and the lower frame includes a base plate engaged between the first and third engagement plates.

In addition, the second engaging plate may have a notch having a shape in which a part of the sides is cut out to a certain depth, and a flow preventing piece corresponding to the notch is formed on the base plate.

The effects according to the present invention are as follows.

First, since the head mounting portion provided with the output head can be quickly dismantled by the one-touch method of lifting the hinge band, the time required for disassembling and assembling the output head can be remarkably shortened. In addition, the output head can be separately stored when the 3D printer is moved, so that the output head can be safely protected from external force.

Second, since the upper frame, the lower frame, and the plurality of vertical frames can be disassembled and assembled together, the volume of the 3D printer can be minimized.

Third, the upper and lower connecting members may be formed in a triple sandwich structure to improve the bonding precision between the upper frame, the lower frame, and the vertical frame.

Fourth, the second extension piece is fitted in each of the fixing grooves formed in the seating plate and the connecting plate, and the change of the minute position of the rod portion on the head mounting portion can be restricted. As a result, it is possible to further increase the coupling force between the head mounting portion and the rod portion, and thereby, motion other than the movement due to the position control of the 3D printer is cut off, thereby outputting high quality output.

Fifth, when the 3D printer is assembled, the rigidity of the 3D printer can be doubled by preventing the upper connecting member and the base plate from being slightly shaken by the projection-groove connection between the notch and the flow prevention piece.

Sixth, when the 3D printer is disassembled and each member is handled, when a plurality of vertical frames are collected and stored, the guide rod, the guide block, and the rod portion located inside the vertical frame by the guard can be protected from the outside have.

1 is a perspective view showing the overall appearance of a 3D printer according to the present invention;
2 is an exploded perspective view of the 3D printer shown in Fig.
3 is a schematic perspective view of a load arm device according to the present invention;
4 is an exploded perspective view of the load arm device shown in Fig.
5 is a plan view of a load arm device according to the present invention.
6 is an exploded perspective view of a fastening part according to the present invention;
7 is a schematic sectional view for explaining a structure of a load arm device according to the present invention.
8 is a conceptual diagram for explaining an operation example of a load arm device according to the present invention;
9 is a side view of a vertical frame according to the present invention.
10 is a conceptual view for explaining a coupling relation between the upper connecting member and the base plate according to the present invention.
11 is a conceptual diagram showing a state in which a plurality of vertical frames are adjacent to each other in a disassembled state.

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The load arm device according to the present invention is characterized in that the output head of a 3D printer can be easily disassembled and assembled in a 3D printer in a one-touch manner.

FIG. 1 is a perspective view showing the overall appearance of a 3D printer according to the present invention. FIG. 2 is an exploded perspective view of the 3D printer shown in FIG. 1, FIG. 3 is a schematic perspective view of a load arm apparatus according to the present invention, FIG. 5 is an exploded perspective view of the load arm device shown in FIG. 3, FIG. 5 is a plan view of the load arm device according to the present invention, FIG. 6 is an exploded perspective view of the fastening part according to the present invention, Fig. 8 is a conceptual diagram for explaining an operation example of the load arm device according to the present invention. Fig.

In order to realize the above feature, the load arm device according to the present invention includes a head mounting portion 100 on a plate on which a head assembly is mounted, a rod portion 200 detachably connected to the head mounting portion 100, And a fastening part 300 hinged to the head mounting part 100 for fastening or disassembling one end of the rod part 200 connected to the head mounting part 100.

Prior to the detailed description, the connection relationship between the load arm device and the 3D printer according to the present invention will be briefly described with reference to FIG. 1 to FIG.

The load arm device is installed inside the 3D printer to move the output head in x, y, and z directions. Although not shown, the output head is connected to the head mounting portion 100 of the load arm device by a screw member or the like.

On the other hand, as shown in FIG. 2, the other end of the rod unit 200 is connected to a guide rod 640 provided on the inner wall surface of the 3D printer. The guide rod 640 is provided with a guide block 650 which is translated in the z-axis direction along the guide rod 640. The other end of the rod portion 200 is hinged to the guide block 650, The z-axis translational motion of the head mounting portion 100 is applied to the head mounting portion 100. It is of course also possible to provide a drive motor (not shown) for translating the guide block 650 in the z-axis direction. However, since the position control of the 3D printer and the driving devices for the 3D printer are well known in the art, a detailed description thereof will be omitted and only the essential features of the present invention will be described.

3, a mounting hole 130 for mounting the output head is passed through the center of the head mounting portion 100, and a plurality of fastening holes 140 are passed around the mounting hole 130. [ That is, the output head is inserted into the mounting hole 130, and a screw member for coupling the inserted output head can be inserted into the fastening hole 140. That is, the load arm device according to the present invention is a method in which the output head is completely fixed to the head mounting portion 100 and then the head mounting portion 100 is detached in a one-touch manner in a state where the output head and the head mounting portion 100 are combined, The output head can be disassembled and assembled in the 3D printer.

4, the head mount 100 includes a stopper 110 for restricting movement of the rod 200 to a connection plate 210, which will be described later, by interaction with the fastener 300, And a seat 120 on which the connecting plate 210 is mounted can be extended around the outer periphery.

5, the rod unit 200 and the fastening unit 300 may be disposed radially along the outer circumference of the head mount 100, and the stopper 110 and the mount A plurality of bands 120 may be provided radially. Only one rod unit 200 and one fastening unit 300 will be described in order to facilitate the following description.

Next, the rod unit 200 is connected to the guide block 650 and the other end is connected to the head mount 100 in order to transmit the compound movement according to the position control of the 3D printer to the head mount 100.

3 to 4, the rod unit 200 includes a plate-like connecting plate 210 and a pair of arms 220 (each of which is hinged to both ends of the connecting plate 210) ). At this time, the connection plate 210 is mounted on the upper surface of the head mount 100, more specifically, the mount table 120, and the movement of the head mount 100 to the center side is restricted by the stopper 110.

One end of the pair of arms 220 is fixed to both ends of the coupling plate 210 and the other end is fixed to the guide block 650 by bearings.

The coupling part 300 binds the coupling plate 210 to the head mounting part 100 when one end of the rod part 200 is connected to the head mounting part 100. That is, the rod portion 200 and the head mounting portion 100 can be disassembled and assembled by the action of the fastening portion 300.

Next, the fastening portion 300 is hinged to the upper surface of the head mounting portion 100. 6, the fastening part 300 includes a hinge band 310 hinged to the head mounting part 100 and a hinge part 310 hinged to the hinge band 310, And a movable piece 320 which is bent many times so as to hold the end portion and has a slit SL for receiving the hinge band 310 therein.

One end of the hinge band 310 is hinged to a hinge member 150 (shown in FIG. 4) provided on the upper surface of the head mount 100 and the movable piece 320 is hinged to the other end of the hinge band 310. [ .

In addition, the hinge band 310 is provided with an outward piece 311 for operating the rotation of the hinge band 310, and when the outward piece 311 is lifted upwards in the state shown in FIG. 3 The binding force of the fastening part 300 can be quickly released.

The coupling part 300 includes a first rotation pin 330 and a hinge part 310 for hinge coupling between the hinge band 310 and the movable piece 320 and a hinge member 150 And a second pivot pin 340 for hinge coupling with the second pivot pin 340.

3 and 7, when the hinge belt 310 rotates so that the plate surface 312 of the hinge belt 310 comes into contact with the head mounting portion 100, The movable piece 320 housed in the slit SL of the hinge unit 320 and interlocked with the hinge band 310 grips the end of the rod unit 200 and binds the rod unit 200 to the head mount unit 100 do.

3, the movable piece 320 includes a first extending piece 321 having one end hinged to the hinge band 310 and a second extending piece 322 extending downward from the other end of the first extending piece 321 And a third extension piece 323 extending from the other end of the second extension piece 322 so as to extend inwardly in parallel with the first extension piece 321, .

That is, the movable piece 320 is bent many times so as to bend in a substantially 'C' shape so as to simultaneously hold the connecting plate 210 and the seat 120. 7, the connection plate 210 and the seating base 120 are disposed in parallel between the first extension piece 321 and the third extension piece 323, and the second extension piece 322 is inserted between the first extension piece 321 and the third extension piece 323, By supporting the connecting plate 210 and the outer surface of the mounting table 120, the rod unit 200 can be firmly coupled to the head mounting unit 100.

As shown in FIG. 4, the seating plate 120 and the connecting plate 210 may have fixing grooves 121 and 211 for receiving the second extending piece 322, respectively. Each of the fixing grooves 121 and 211 is formed by cutting a part of the outer surface of the seating plate 120 and the connecting plate 210. When the coupling portion 300 binds the rod portion 200, The second extension piece 322 is fitted into the grooves 121 and 211 to limit the fine positional change of the rod part 200 on the head mounting part 100. [

As a result, it is possible to further increase the coupling force between the head mounting portion 100 and the rod portion 200, thereby preventing movement other than movement by the position control of the 3D printer, thereby outputting high quality output.

Hereinafter, the operation of the rod arm device will be briefly described with reference to the accompanying drawings. When the head mounting unit 100 provided with the output head is to be disassembled in the 3D printer, the hinge belt 310 of the fastening unit 300 is rotated as shown in FIG. 8A. At this time, the hinge band 310 is formed with the outward piece 311, so that the hinge band 310 can be easily rotated by holding the outward piece 311 and operating the hinge band 310.

When the hinge belt 310 is rotated by a predetermined angle as shown in FIG. 8B, the movable piece 320, which is associated with the hinge belt 310, rotates together to partially lose the gripping force for fastening the coupling plate 210. At this time, if the hinge band 310 and the movable piece 320 are rotated as shown in FIG. 8C, the coupling plate 210 that has been grasped can be completely disassembled.

That is, the rod unit 200 fastened to the head mounting unit 100 can be quickly and easily dismounted by the one-touch method of lifting the hinge band 310 upward.

On the other hand, since the output head is fixed to the head mounting portion 100 by a screw member, the disassembled head mounting portion 100 can be housed in a separate safety casing (not shown) and can be individually transported or stored.

If the 3D printer is transported without disassembling the output head, the output head may be damaged by the contact with the inner member due to shaking during transportation. However, if the output head can be easily disassembled as in the load arm device of the present invention, the time required for disassembling the 3D printer can be greatly saved, and the output head can be safely stored.

If the above-described process is performed in the reverse order, the output head can be easily assembled to the 3D printer.

Hereinafter, a 3D printer according to the present invention will be described. At this time, since the 3D printer according to the present invention includes the above-described rod arm device, only the members other than the rod arm device will be described. Further, the same or similar parts as those described above will not be described in detail in order to avoid redundancy.

9 is a side view of a vertical frame according to the present invention, FIG. 10 is a conceptual view for explaining a coupling relation between an upper connecting member and a base plate according to the present invention, and FIG. 11 is a cross- Fig.

1 and 2, the 3D printer according to the present invention includes an upper frame 400, a lower frame 500 spaced upward and downward from the upper frame 400, And a plurality of vertical frames 600 provided between the lower frame 500 and the guide rods 640 to which the other ends of the rod portions 200 are connected. At this time, the upper frame 400, the lower frame 500, and the plurality of vertical frames 600 can be disassembled and assembled together.

The upper frame 400 constitutes the upper part of the 3D printer according to the present invention. Although not shown, the upper frame 400 includes a supply roll on which the filament material is wound, a control unit for controlling the position of the output head, And a driving device for driving it by an axis may be provided.

The upper frame 400 may include an upper case 420 and a base plate 410 attached to one of the upper and lower surfaces of the upper case 420. At this time, the upper case 420 may be formed with a plurality of radially-formed binding grooves 421 along the outer circumference thereof. The end of the vertical frame 600, which will be described later, is connected to the binding groove 421.

Next, the lower frame 500 constitutes the lower part of the 3D printer according to the present invention as a part supported on the ground. In addition, a stage S on which an output is stacked may be provided on the upper surface of the lower frame 500.

Similarly to the above-described upper frame 400, the lower frame 500 includes a lower case 520 and a base plate 510 attached to either the upper or lower surface of the lower case 520 . In addition, the lower case 520 may be formed with a plurality of radially formed fastening grooves 521 along the outer circumference thereof. In the following description, the structure and operation of the lower frame 500 are the same as those of the upper frame 400, and therefore only the upper frame 400 will be described.

Next, the plurality of vertical frames 600 constitute a side frame of the 3D printer according to the present invention, and a space in which the output is stacked by mutual coupling of the upper frame 400, the lower frame 500, and the vertical frame 600 . Although it is preferable that a plurality of vertical frames 600 are provided as shown in the accompanying drawings, only one vertical frame 600 will be described for convenience of explanation.

More specifically, the vertical frame 600 includes a beam 610 extending upward and downward as shown in FIG. 9, an upper connecting member 603 installed at an upper end of the beam 610 and engaged with the upper frame 400, And a lower connecting member 630 installed at a lower end of the beam 610 and engaged with the lower frame 500. [

The upper connecting member 620 is inserted into the binding groove 421 of the upper case 420 and the lower connecting member 630 is inserted into the binding groove 521 of the lower case 520, ), The lower frame 500, and the vertical frame 600 are implemented.

More specifically, guards 611 can be deployed on both sides of the beam 610. The guard 611 acts to protect the inner space when the plurality of vertical frames 600 are brought close to each other as shown in FIG. That is, when the 3D printer according to the present invention is disassembled and a plurality of vertical frames 600 are collected and stored when the respective members are handled, the guide rod 640 positioned inside the vertical frame 600 by the guard 611, The guide block 650, the rod portion 200, and the like can be protected from the outside.

9, each of the upper connecting member 620 and the lower connecting member 630 includes first and second plate-like engaging plates 621 and 631, a pair of first engaging plates 621 and 631, Shaped third coupling plates 623 and 633 spaced from each other in the upward and downward directions and a second coupling plate 623 interposed between the first coupling plates 621 and 631 and the third coupling plates 623 and 633, Shaped second coupling plates 622 and 632 having smaller areas than the coupling plates 621 and 631 and the third coupling plates 623 and 633.

Since the upper connecting member 620 and the lower connecting member 630 have the same structure and function, only the upper connecting member 620 will be described.

More specifically, the second engaging plate 622 of the upper connecting member 620 has a smaller area than the first engaging plate 621 and the third engaging plate 623, and the first engaging plate 622, The first engaging plate 622 and the third engaging plate 623 are positioned on the same line so that the engaging space 624 is formed between the first engaging plate 621 and the third engaging plate 623 9) is formed.

A part of the base plate 410 of the upper frame 400 is inserted into the fitting space 624 so that the upper connecting member 620 and the base plate 410 are detachably coupled to each other. In other words, the upper frame 400 and the vertical frame 600 can be disassembled and assembled in such a manner that the base plate 410 is guided to the fitting space 624 of the upper connecting member 620.

As a result, since the upper connecting member 620 employs a triple sandwich structure as described above, it is possible to provide a high bonding precision in a state of being coupled with the base plate 410, The rigidity of the coupling between the frame 500 and the vertical frame 600 can be improved.

10, a notch 622-1 is formed in the second engaging plate 622 in such a manner that a part of the sides of the second engaging plate 622 is cut out to a certain depth and a notch 622-1 The flow prevention pieces 411 corresponding to the flow prevention pieces 411 can be projected.

That is, when the base plate 410 is guided in the fitting space 624 and inserted between the first engaging plate 621 and the second engaging plate 622, the notch 622-1 and the flow preventing piece The upper connecting member 620 and the base plate 410 can be engaged with each other by the projection-groove connection of the upper connecting member 620 and the base plate 410 without shaking.

Therefore, when the 3D printer is assembled according to the triple sandwich structure of the upper connecting member 620 and the projection-groove coupling method of the notch 411 and the flow preventing piece 622-1, the robustness can be doubled .

The coupling between the lower connecting member 630 and the base plate 410 of the lower frame 500 is performed in the same manner as the coupling of the upper connecting member 620 described above.

100: head mounting portion
110: Stopper
110: seat
200:
210: connection plate
220: arm
300: fastening part
310: Hinge band
320:
400: upper frame
500: Lower frame
600: vertical frame
610: Beam
620: upper connection member
630: Lower connection member

Claims (5)

A head mounting portion in the form of a plate on which the head assembly is mounted;
A rod portion detachably connected to the head mounting portion; And
And a fastening portion hinged to the head mounting portion for fastening or disassembling one end of the rod portion connected to the head mounting portion. The method according to claim 1,
The fastening portion
A hinge band hinged to the head mounting portion; And
And a movable piece which is hinged to the hinge band and is bent many times so as to grasp an end portion of the rod portion, the slit having a slit for receiving the hinge band therein,
Wherein when the hinge block is rotated so that the plate surface of the hinge block contacts the head mounting portion, the hinge block is received in the slit of the movable piece and is fastened to the head mounting portion while holding the end portion of the movable piece rod portion interlocked with the hinge band. Easy one touch rod arm device. The method of claim 2,
The movable piece
A first extension piece hinged to the hinge band at one end;
A second extension extending vertically downward from the other end of the first extension; And
And a third extension extending perpendicularly from the other end of the second elongated member inwardly in parallel with the first elongated member. An upper frame;
A lower frame spaced upward and downward from the upper frame; And
A plurality of vertical frames provided between the upper frame and the lower frame and having guide rods connecting the other ends of the rod portions; ≪ / RTI &
The upper frame, the lower frame, and the plurality of vertical frames may be disassembled and assembled together,
Wherein each of the vertical frames comprises:
A beam extending in the upward and downward directions;
An upper connecting member installed at an upper end of the beam and engaged with the upper frame; And
And a lower connection member installed at a lower end of the beam and engaged with the lower frame. The method of claim 4,
The upper connecting member and the lower connecting member, respectively,
A first coupling plate;
A third coupling plate spaced apart in the upward and downward directions in parallel with the first coupling plate; And
And a second engaging plate interposed between the first engaging plate and the third engaging plate, the second engaging plate having a smaller area than the first engaging plate and the third engaging plate.

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