JP5100585B2 - 3D modeling machine - Google Patents

Description

  The present invention relates to a three-dimensional modeling machine including a housing unit placed on an installation surface and a three-dimensional modeling mechanism unit arranged inside the housing unit.

  2. Description of the Related Art Conventionally, a 3D modeling machine disclosed in Patent Document 1 is known as a 3D modeling machine including a housing part placed on an installation surface and a 3D modeling mechanism part arranged inside the housing part.

The 3D modeling machine disclosed in the literature 1 includes a frame (housing) placed on the installation surface and a 3D modeling mechanism arranged inside the frame. It is assembled using the frame. The three-dimensional modeling mechanism unit includes a material sheet supply means that feeds a material sheet coated with an adhesive that melts by heating to generate an adhesive force, and a material sheet supply unit that heats the material sheet. A three-dimensional modeling machine comprising heating means for pressing and adhering to the upper surface, and cutting means for cutting a material sheet into a predetermined shape by a laser beam based on the three-dimensional shape data to form a three-dimensional model or the like 1 has a configuration in which a supply shaft for mounting the material sheet roll and a winding shaft for winding the processed material sheet are provided in parallel in the horizontal axis direction on one side of the machine body.
JP 2001-287275 A

  However, the conventional three-dimensional modeling machine including the above-described three-dimensional modeling machine generally has the following problems to be solved.

  First, since this type of 3D modeling machine performs 3D modeling, not only absolute positions in the X, Y, and Z directions during modeling, but also relative positions and relative angles (coordinate orthogonality) between each direction. However, in the case of the conventional 3D modeling machine, for example, in Patent Document 1, a frame (housing part) In order to assemble the 3D modeling mechanism part, if there is unevenness on the installation surface on which the modeling machine is installed, the distortion (deflection) of the frame tends to affect the 3D modeling mechanism part inside the frame. Therefore, the flatness is usually secured by adjusting the height (alignment adjustment) with the height adjustable housing legs provided at the four corners of the bottom of the frame, but the adjustment work becomes difficult and artificial. The adjustment is likely to cause variations in the adjustment work, and even if the initial adjustment is made accurately, the adjustment tends to be distorted due to long-term use.

  Second, in the case of a large 3D modeling machine, the installation location is determined and installed, so once installed, the installation location will not change frequently and even if it is changed Since it is performed by a specialist, etc., readjustment is performed even when re-installing, but in the case of a small 3D modeling machine, for example, a small 3D modeling machine such as a desktop model that can be placed on a desk It is also conceivable that the user frequently moves due to a layout change or the like. In this case, there are many cases where the user does not perform sufficient adjustment, and eventually it is difficult to maintain an optimal state with high accuracy. Note that a structure having high rigidity may be employed, but in the case of a small three-dimensional modeling machine, there is a limit to increasing rigidity because it increases the size, weight, and cost.

  The object of the present invention is to provide a three-dimensional modeling machine that solves the problems in the background art.

  In order to solve the above-described problems, the present invention provides a housing part H to be placed on the installation surface S, and an injection head 3 for injecting the modeling material R to the modeling table 2 disposed inside the housing part H. The X-direction moving mechanism Mx for moving the X-direction relative to the X-direction, the Y-direction moving mechanism My for relatively moving the injection head 3 in the Y-direction relative to the modeling table 2, and the Z-direction relative to the modeling table 2 relative to the injection head 3 When configuring the three-dimensional modeling machine 1 including the three-dimensional modeling mechanism unit Mo having the Z-direction moving mechanism Mz to be performed, the three-dimensional including at least the X-direction moving mechanism Mx, the Y-direction moving mechanism My, and the Z-direction moving mechanism Mz. An inner chassis portion C that supports the entire modeling mechanism portion Mo is provided, and the inner chassis portion C is formed in a rectangular shape that constitutes the bottom surface of the housing portion H. A plurality of chassis coupling portions 4a, 4b, 4c, and 4d that are arranged on the upper surface Hdu and are coupled to the lower surface Cd of the inner chassis portion C in contact with the upper surface Hdu of the housing bottom surface portion Hd. Between the two adjacent housing legs 5a and 5b, 5b and 5c, which are located at different positions with respect to the plurality of housing legs 5a, 5b, 5c and 5d respectively disposed in the vicinity of the four corners of the lower surface Hdd. It is characterized by being arranged at a position.

  In this case, according to a preferred aspect of the invention, the chassis coupling portions 4a can use the supporting members 4as interposed between the housing bottom surface portion Hd and the inner chassis portion C. In this case, the supporting members 4as ... The rigid member 12 or the elastic member 13 can be used. The modeling material R includes a modeling material Ra that models the three-dimensional model A and a support material Rs that fills a space other than the three-dimensional model A.

  According to the three-dimensional modeling machine 1 according to the present invention having such a configuration, the following remarkable effects can be obtained.

  (1) An inner chassis portion C that supports at least the entire three-dimensional modeling mechanism portion Mo including the X direction moving mechanism Mx, the Y direction moving mechanism My, and the Z direction moving mechanism Mz is provided, and the inner chassis portion C is provided as a housing portion. A plurality of chassis coupling portions 4a that are arranged on the upper surface Hdu of the housing bottom surface portion Hd that constitutes the bottom surface of H and that are in contact with and coupled to the lower surface Cd of the inner chassis portion C in contact with the upper surface Hdu of the housing bottom surface portion Hd. Since the plurality of housing leg portions 5a disposed on the lower surface Hdd of the housing bottom surface portion Hd are disposed at different positions, they are disposed on the uneven installation surface S, and the housing portion H is distorted (flexed). Even if this occurs, the distortion applied to the inner chassis C, and further to the X direction moving mechanism Mx, the Y direction moving mechanism My, and the Z direction moving mechanism Mz is averaged. It is reduced to a minute degree. Therefore, the deviation of the relative position and relative angle (coordinate orthogonality) of the X direction moving mechanism Mx, the Y direction moving mechanism My, and the Z direction moving mechanism Mz is greatly reduced, and the three-dimensional structure A has high accuracy and high quality. Can contribute to

  (2) Since the distortion of the housing portion H that occurs when the 3D modeling machine 1 is installed on the installation surface S can be reduced to about a half, the adjustment (alignment adjustment) for ensuring flatness is unnecessary or It can be simplified and can contribute to the ease of installation, and the rigid structure of the inner chassis portion C and the like can also be simplified, thereby contributing to the overall size reduction, weight reduction, and cost reduction.

  (3) The housing bottom surface portion Hd is formed in a rectangular shape, the housing leg portions 5a... Are arranged in the vicinity of the four corners of the housing bottom surface portion Hd, and the chassis coupling portions 4a. .. Are arranged at intermediate positions between 5a and 5b, 5b and 5c..., The degree of distortion reduction applied to the inner chassis C is averaged, and an optimal aspect can be configured that is balanced overall.

  (4) According to a preferred embodiment, if the support member 4as ... interposed between the housing bottom surface portion Hd and the inner chassis portion C is used as the chassis coupling portion 4a ..., the inner chassis portion C is separated from the housing bottom surface portion Hd. be able to. Therefore, the shape of the inner chassis portion C is not limited, and the degree of design freedom for the shape of the inner chassis portion C can be increased.

  (5) If the rigid member 12 is used as the support member 4as... According to a preferred embodiment, the stability at the time of supporting the inner chassis C can be improved, and the elastic member 13 is used as the support member 4as. For example, since the distortion (deflection) generated in the housing part H can be absorbed, it is possible to further promote higher accuracy and higher quality of the three-dimensional structure A, further ease of installation, and simplification of the rigid structure. it can.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, the configuration of the three-dimensional modeling machine 1 according to the present embodiment will be specifically described with reference to FIGS.

  In FIG. 9, the external appearance structure of the three-dimensional modeling machine 1 which concerns on this embodiment is shown. The three-dimensional modeling machine 1 is entirely covered with a housing portion H, and the size is configured as a desktop type so that it can be placed on the upper surface of a desk or the like. Inside the housing part H, a three-dimensional modeling mechanism part Mo shown in FIG. The three-dimensional modeling mechanism Mo is an X-direction moving mechanism Mx that relatively moves the injection head 3 for injecting the modeling material R with respect to the modeling table 2 in the X direction, and the injection head 3 with respect to the modeling table 2 in the Y direction. And a Z-direction moving mechanism Mz that relatively moves the modeling table 2 in the Z direction with respect to the injection head 3.

  As shown in FIGS. 1 and 2, the housing portion H includes a housing bottom surface portion Hd and a housing main body portion Hm, and can be directly placed on an installation surface S (an upper surface of a desk or the like). The bottom surface portion Hd of the housing is entirely formed in a rectangular shape (illustration is rectangular) by a flat plate, and constitutes the bottom surface of the housing portion H. Housing leg portions 5a, 5b, 5c, and 5d that protrude downward are disposed near the four corners of the bottom surface Hdd of the housing bottom surface portion Hd. The housing legs 5a... May be rigid or elastic, and may be casters or the like. On the other hand, the housing body Hm is formed in a box shape that covers the top of the housing bottom surface Hd, and includes an opening / closing door 71, a power switch 72, and the like as shown in FIG. In addition, a molding machine control unit 75 is provided inside the housing unit H.

  Further, as shown in FIGS. 1 and 2, an inner chassis portion C formed separately from the housing portion H is disposed inside the housing portion H, and at least the X direction is provided by the inner chassis portion C. The entire three-dimensional modeling mechanism Mo including the moving mechanism Mx, the Y-direction moving mechanism My, and the Z-direction moving mechanism Mz is supported. In this case, the inner chassis portion C is arranged on the upper surface Hdu of the housing bottom surface portion Hd, and a plurality of chassis couplings that are coupled to the lower surface Cd of the inner chassis portion C in contact with the upper surface Hdu of the housing bottom surface portion Hd. The portions 4a, 4b, 4c, and 4d are disposed at different positions with respect to the housing legs 5a, 5b, 5c, and 5d disposed on the lower surface Hdd of the housing bottom surface portion Hd. Each of the illustrated chassis coupling portions 4a is disposed at an intermediate position between two adjacent housing legs 5a and 5b, preferably at a central position. Specifically, as shown in FIG. 1, the chassis coupling portion 4a is located at the central position between the housing legs 5a and 5b, the chassis coupling portion 4b is located at the central position between the housing legs 5b and 5c, and the housing leg 5c. The chassis coupling portion 4c is disposed at the central position between the housing legs 5d, and the chassis coupling portion 4d is disposed at the central position between the housing legs 5d and 5a. In this way, the housing bottom surface portion Hd is formed in a rectangular shape, the housing leg portions 5a... Are disposed in the vicinity of the four corners of the housing bottom surface portion Hd, and the chassis coupling portions 4a. If they are arranged at intermediate positions between the portions 5a and 5b, respectively, the degree of reduction in distortion applied to the inner chassis portion C is averaged, so that it can be configured as an optimal aspect balanced throughout. .

  Further, the chassis coupling portions 4a may be provided as shown in FIGS. 1 and 2, or as shown in FIG. 3, support members 4as that are interposed between the housing bottom surface portion Hd and the inner chassis portion C are used. May be.

  When the chassis coupling portions 4a are provided as shown in FIGS. 1 and 2, the shape of the inner chassis portion C is formed in a cross shape in plan view as shown in FIG. As a result, if the portions near the four tips of the cross-shaped inner chassis portion C are fixed on the upper surface Hdu of the housing bottom surface portion Hd by the fixing portions 11a, 11b, 11c, and 11d such as bolts and nuts, respectively, Chassis coupling portions 4a, 4b, 4c, and 4d that are coupled in contact with the upper surface Hdu of the portion Hd can be configured. 2 is provided as shown in FIG. 2, the inner chassis portion C can be directly superimposed on the upper surface Hdu of the housing bottom surface portion Hd, thereby simplifying the chassis coupling portions 4a. be able to.

  On the other hand, as shown in FIG. 3, when the support member 4as... Interposed between the housing bottom surface portion Hd and the inner chassis portion C is used, it is fixed by fixing portions 11a, 11b, 11c, 11d such as bolts and nuts. In addition, ring-shaped (flat cylindrical) support members 4as, 4bs, 4cs, and 4ds through which bolts and the like are inserted may be interposed between the upper surface Hdu of the housing bottom surface portion Hd and the lower surface Cd of the inner chassis portion C. As described above, if the support members 4as interposed between the housing bottom surface portion Hd and the inner chassis portion C are used as the chassis coupling portions 4a, the inner chassis portion C can be separated from the housing bottom surface portion Hd. Therefore, the shape of the inner chassis part C is not limited, and the degree of freedom in designing the shape of the inner chassis part C can be increased, for example, it can be formed in a rectangular shape.

  The support members 4as may be formed of a rigid member 12 such as a metal material, or may be formed of an elastic member 13 such as a rubber material. If the rigid member 12 is used, stability in supporting the inner chassis portion C can be improved, and if the elastic member 13 is used, distortion (deflection) generated in the housing portion H can be absorbed. The high accuracy and high quality of the object A, further facilitating installation and simplification of the rigid structure can be further promoted. Further, the support member 4as using the rigid member 12 and the support member 4as using the elastic member 13 may be combined. The form illustrated in FIG. 3 is a combination of one support member 4ds using the rigid member 12 and three support members 4as, 4b, and 4c using the elastic member 13, whereby the rigid member 12 and Both advantages of the elastic member 13 can be enjoyed.

  Next, a suitable three-dimensional modeling mechanism part Mo supported by the inner chassis part C will be described with reference to FIGS.

  In FIG. 5, Mc is a carriage mechanism, Mx is an X direction moving mechanism, My is a Y direction moving mechanism, and Mz is a Z direction moving mechanism. The carriage mechanism Mc includes a carriage frame 21, and the carriage frame 21 is slidably supported by a pair of Y direction guide rails 22p and 22q arranged along the Y direction. The Y-direction guide rails 22p and 22q are supported by the inner chassis portion C and fixed in position. The carriage mechanism Mc includes an injection head 3 that injects the modeling material R onto the modeling table 2 and a cleaning roller 23 that cleans the modeling material R injected onto the modeling table 2, and a part of the X-direction moving mechanism Mx. To support. The injection head 3 has a function of injecting a liquid modeling material R from a nozzle by an inkjet method, and injects a nozzle group and a support material Rs for injecting a modeling material Ra of different colors including yellow, magenta, and cyan. Has a nozzle. Further, as shown in FIG. 6, the cleaning roller 23 is arranged on the back side of the carriage frame 21, that is, on the opposite side to the side where the injection head 3 is arranged, and is rotated to a position fixed to the carriage frame 21. It is supported movably. Further, although not shown, an ultraviolet (UV) lamp for curing the modeling material R is provided on the bottom surface of the carriage frame 21.

  A part of the X-direction moving mechanism Mx disposed on the carriage mechanism Mc includes a pair of pulleys 24 and 25 rotatably disposed on both sides of the carriage frame 21 and a timing belt 26 spanned between the pulleys 24 and 25. A head moving mechanism Mh, a second transmission gear 28 arranged coaxially with the pulley 24 and rotating integrally with the pulley 24, and a first transmission gear 27 meshing with the second transmission gear 28 are included. . The injection head 3 is fixed to a predetermined position of the timing belt 26 via a connecting member 29 and is slidably supported by an X-direction guide rail 30 disposed along the moving direction of the timing belt 26. The pulley 24 is provided with a rotary encoder 31 for detecting the rotational speed.

  The X-direction moving mechanism Mx further includes an X-direction driving unit 32 provided separately from the carriage mechanism Mc. The X direction drive unit 32 includes an X direction rotation drive unit 33 and a guide shaft 34 along the Y direction that is rotated by the X direction rotation drive unit 33. The X direction rotation drive unit 33 incorporates a drive motor such as a stepping motor or a servo motor. The guide shaft 34 penetrates the carriage frame 21 and is inserted into the first transmission gear 27 described above. Furthermore, the circumferential surface of the guide shaft 34 has a circumferential direction restricting portion 34c formed by a concave groove along one or more axial directions (Y direction), and the inner circumferential surface of the first transmission gear 27 formed in a donut shape. The convex part formed in the is engaged with the concave groove (circumferential regulating part 34c). Thus, the first transmission gear 27 is slidable in the axial direction with respect to the guide shaft 34, and the rotational displacement in the circumferential direction is restricted by the circumferential direction restricting portion 34c. By adopting such a configuration, the X-direction moving mechanism Mx that can improve the responsiveness and controllability at the time of control can be realized easily and reliably, and in particular, the injection head 3 can be provided by interposing the second transmission gear 28. The moving direction and moving speed can be easily set.

  The Y-direction moving mechanism My is a carriage moving mechanism Mg including a timing belt 38 that spans a pair of pulleys 36 and 37 that move the carriage mechanism Mc in the Y direction along the pair of Y-direction guide rails 22p and 22q. Is provided. For this reason, the carriage frame 21 is fixed to a predetermined position of the timing belt 38, particularly the timing belt 38 located on the upper side. The Y-direction moving mechanism My includes a Y-direction rotation drive unit 41, and the rotation axis of the Y-direction rotation drive unit 41 is coupled to the axis of one pulley 36 via the transmission shaft 42. The Y direction rotation drive unit 41 incorporates a drive motor such as a stepping motor or a servo motor. The pulley 37 is provided with a rotary encoder 39 for detecting the rotational speed.

  On the other hand, the carriage frame 21 has a movement amount conversion unit 43 that converts the Y-direction movement amount My of the Y-direction movement mechanism My into a rotation movement amount and a movement that transmits the rotation movement amount to the cleaning roller 23 to rotate the cleaning roller 23. A cleaning roller drive mechanism Mr having a quantity transmission unit 44 is additionally provided. As shown in FIGS. 6 to 8, the cleaning roller driving mechanism Mr includes a sub frame 45 fixed to the carriage frame 21, and meshes with the first conversion gear 46 and the first conversion gear 46 in the sub frame 45. The second conversion gears 47 are attached so as to be rotatable. In this case, the first conversion gear 46 meshes with the timing belt 38, particularly the tooth portion of the lower timing belt 38. Further, the second conversion gear 47 is arranged at a floating position with respect to the tooth portion 38 c, and the rotation direction is converted by the second conversion gear 47. Therefore, the first conversion gear 47 constitutes the movement amount conversion unit 43 and the second conversion gear 47 constitutes the movement amount transmission unit 44. Further, the second conversion gear 47 and the cleaning roller 23 are arranged on the same axis, and the transmission shaft 48 of the second conversion gear 47 is coupled to the cleaning roller 23 via an electromagnetic clutch 49. By adopting such a configuration, the cleaning roller drive mechanism Mr that eliminates the need for an independent drive system that rotates the cleaning roller 23 can be easily and reliably realized, and in particular, the cleaning can be performed by interposing the second conversion gear 47. The rotation direction and rotation speed of the roller 23 can be easily set.

  The Z direction moving mechanism Mz has a function of moving the modeling table 2 in the Z direction with respect to the injection head 3. The modeling table 2 is arranged below the injection head 3, and the modeling table 2 is moved up and down by the Z-direction moving mechanism Mz. The Z-direction moving mechanism Mz includes a Z-direction drive unit 51. The Z-direction drive unit 51 converts the Z-direction rotation drive unit 52 and the rotation of the Z-direction rotation drive unit 52 into a vertical displacement (Z-direction displacement). A motion conversion unit 53 using a ball screw mechanism or the like is provided. Then, the output shaft 53 e that moves up and down in the motion conversion unit 53 is coupled to the table leg of the modeling table 2. The Z-direction rotation drive unit 52 incorporates a drive motor such as a stepping motor or a servo motor. Reference numeral 55 denotes a modeling object base attached to the modeling table 2 placed on the upper surface of the modeling table 2.

  On the other hand, as shown in FIG. 9, the 3D modeling machine 1 according to the present embodiment is connected to another computer 80 to constitute a 3D modeling system when used. In this case, the modeling machine control unit 75 and the computer 80 in the three-dimensional modeling machine 1 are connected by wired means (USB cable or the like) 81 or wireless means (wireless LAN or the like). As the computer 80, various computing devices such as a general-purpose personal computer (personal computer) can be used. Therefore, the computer 80 stores or registers application software and various data (database) for comprehensively controlling the 3D modeling machine 1. In FIG. 8, reference numeral 61 denotes a control system including the modeling machine control unit 75 and the computer 80. At least the rotary encoders 31 and 39, the X direction rotation drive unit 33, the Y direction rotation drive unit 41, and the Z direction rotation drive unit 52 described above are connected to the modeling machine control unit 75, respectively, and the injection head 3 and the electromagnetic clutch. 49 is connected.

  The three-dimensional modeling mechanism unit Mo configured in this way operates as follows. First, in the X-direction moving mechanism Mx, the guide shaft 34 is rotated by the rotation operation of the X-direction rotation driving unit 33 and the first transmission gear 27 is rotated. Further, the second transmission gear 28 and the pulley 24 are rotated by the rotation of the first transmission gear 27. As a result, the timing belt 26 moves, and the ejection head 3 moves along the X direction guide rail 30 in the X direction. At this time, the ejection head 3 can be moved in the forward and reverse directions of the X direction by controlling the rotational direction of the X direction rotational drive unit 33. On the other hand, the rotational speed of the pulley 24 is detected by the rotary encoder 31 and is given to the modeling machine control unit 75. Thereby, feedback control with respect to the X direction position of the injection head 3 is performed.

  In the Y-direction moving mechanism My, the transmission shaft 42 is rotated by the rotation operation of the Y-direction rotation driving unit 41, and the pulley 36 is rotated. As a result, the timing belt 38 in the carriage moving mechanism Mg moves, the carriage frame 21 (carriage mechanism Mc) moves along the Y-direction guide rails 22p and 22q, and the ejection head 3 moves in the Y direction. At this time, by controlling the rotation direction of the Y-direction rotation drive unit 41, the ejection head 3 can be moved in the forward and reverse directions of the Y direction. On the other hand, the rotational speed of the pulley 37 is detected by the rotary encoder 39 and is given to the modeling machine control unit 75. Thereby, feedback control with respect to the Y direction position of the ejection head 3 is performed.

  By the way, the first transmission gear 27 described above is supported on the guide shaft 34 so as to be displaceable in the axial direction. Therefore, even if the carriage mechanism Mc moves in the Y direction, there is no influence on the movement of the carriage mechanism Mc. Does not affect. Further, the X-direction rotation drive unit 33 and the guide shaft 34 that constitute a part of the X-direction moving mechanism Mx are not mounted on the carriage mechanism Mc. Accordingly, the carriage mechanism Mc can be reduced in size and weight, improved in response (controllability) when controlling the Y-direction moving mechanism My, and reduced in vibration (M / C vibration) that increases with the square of the weight. Therefore, it is possible to improve control accuracy and reduce power consumption.

  Further, when the Y-direction moving mechanism My operates, the timing belt 38 moves, and the first conversion gear 46 in the cleaning roller driving mechanism Mr meshes with the tooth portion 38c in the lower timing belt 38. The conversion gear 46 rotates, and the rotation of the first conversion gear 46 is transmitted to the second conversion gear 47. Thereby, the transmission shaft 48 provided integrally on the same axis as the second conversion gear 47 also rotates. Therefore, the cleaning roller 23 can be rotated or stopped by switching the electromagnetic clutch 49 to the connection mode or the disconnection mode.

  In the Z-direction moving mechanism Mz, if the Z-direction rotation driving unit 52 rotates, this rotation is converted into a vertical displacement (Z-direction displacement) of the output shaft 53e by the motion conversion unit 53 using a ball screw mechanism or the like. Thereby, the modeling table 2 supported by the output shaft 53e is also moved up and down (displaced in the Z direction). At this time, the modeling table 2 can be moved in the forward and reverse directions of the Z direction by controlling the rotation direction of the Z direction rotation driving unit 52. Thereby, the raising / lowering displacement of the modeling table 2 becomes a relative displacement in the Z direction of the injection head 3 located above.

  On the other hand, the actual modeling operation is performed as follows. First, since modeling data for the three-dimensional model A to be modeled is set in the computer 80, modeling processing is performed based on the modeling data. FIG. 7 shows the operation (action) during modeling. The modeling principle is laminated by sequentially printing a thin modeling layer on the modeling table 2 (modeled object base 55) according to the same principle as an ink jet printer. That is, by controlling the injection head 3 in the X direction and the Y direction, the modeling material Ra corresponding to the modeling data in the first layer in the Z direction is injected. Further, the support material Rs is injected into a portion other than the portion corresponding to the three-dimensional structure A from which the modeling material Ra is injected. The thickness of the first layer is about 0.1 [mm], and the layer surface of the first layer is entirely filled with the modeling material Ra and the support material Rs.

  Further, the first layer is cured by the irradiation of ultraviolet rays from the ultraviolet lamp, and the upper surface is adjusted (cleaned) by the cleaning roller 23 before being completely cured. Thereafter, the modeling table 2 is lowered in the Z direction by a displacement corresponding to the second layer. Then, the modeling process of the second layer is performed by the same procedure, and the modeling process is sequentially performed by the same procedure from the third layer to the n-th layer (final layer). When the modeling process is completed up to the final layer, the target three-dimensional model A can be obtained by removing the support material Rs by, for example, immersing the modeled body in a chemical solution.

  Therefore, according to the 3D modeling machine 1 according to the present embodiment, the entire 3D modeling mechanism Mo including at least the X direction moving mechanism Mx, the Y direction moving mechanism My, and the Z direction moving mechanism Mz is supported. An inner chassis portion C is provided, and the inner chassis portion C is disposed on the upper surface Hdu of the housing bottom surface portion Hd constituting the bottom surface of the housing portion H, and the lower surface Cd of the inner chassis portion C is provided with the housing bottom surface portion Hd. The plurality of chassis coupling portions 4a... That contact and couple with the upper surface Hdu are disposed at different positions with respect to the plurality of housing leg portions 5a disposed on the lower surface Hdd of the housing bottom surface portion Hd. Even if the housing part H is installed on the installation surface S and the housing part H is distorted (bent), the inner chassis part C, and further the X-direction moving mechanism Mx, Y-direction moving mechanism Strain is added to y and the Z-direction moving mechanism Mz is reduced to about half on average. FIG. 4 shows that when the 3D modeling machine 1 is installed on an uneven installation surface S, one corner Hdp of the housing bottom surface portion Hd bends upward, and the housing bottom surface portion Hd is indicated by a virtual line. The state displaced to the position of is shown. In this case, one corner Hdp is relatively displaced upward by a height (relative height) Lo, but at an intermediate position between the housing leg 5a disposed in the vicinity of the corner Hdp and the other housing leg 5d. At the position of the disposed chassis coupling portion 4d, the displaced height (relative height) is Ls, and this height Ls is about half of the height Lo.

  Therefore, the deviation of the relative position and relative angle (coordinate orthogonality) of the X direction moving mechanism Mx, the Y direction moving mechanism My, and the Z direction moving mechanism Mz is greatly reduced, and the three-dimensional structure A has high accuracy and high quality. Can contribute to Moreover, adjustment (alignment adjustment) for ensuring flatness can be unnecessary or simplified, and can contribute to ease of installation, and can simplify the rigid structure such as the inner chassis portion C. This can contribute to reduction in size, weight and cost.

  Further, according to the three-dimensional modeling machine 1 according to the present embodiment, the carriage mechanism Mc is provided with the cleaning roller 23 for cleaning the modeling material R injected onto the modeling table 2, and the Y-direction moving mechanism My moves in the Y direction. Since the cleaning roller driving mechanism Mr having the movement amount conversion unit 43 that converts the amount into the rotation movement amount and the movement amount transmission unit 44 that transmits the rotation movement amount to the cleaning roller 23 and rotates the cleaning roller 23 is provided. An independent drive system for rotating the drive unit 23 is not required, so that the cost of the drive system can be greatly reduced and the entire drive system can be reduced in size and size (occupied space can be reduced). Therefore, the desktop three-dimensional modeling machine 1 that can be placed on a desk or the like can be easily realized.

  Although the best embodiment has been described in detail above, the present invention is not limited to such an embodiment, and departs from the gist of the present invention in the detailed configuration, shape, material, quantity, numerical value, and the like. It can be changed, added, or deleted as long as it is not.

  For example, the elastic member 13 such as a rubber material is mentioned. The rubber material includes natural rubber and synthetic rubber, and the elastic member 13 includes other synthetic resin materials having elasticity, coil springs and leaf springs. An elastic member such as can also be used. Further, it is most preferable that the chassis coupling portion 4a is disposed at a central position between the two adjacent housing legs 5a and 5b, but the chassis coupling portion 4a is not necessarily limited to the central position, and is somewhat deviated to one side. A predetermined effect can be obtained even at a different position. Note that the 3D modeling machine 1 according to the present invention can be downsized and compact, and is particularly optimally configured as a desktop type, but can also be used for various types of 3D modeling machines such as a floor-mounted type. .

The perspective block diagram which shows typically the principal part structure of the three-dimensional modeling machine which concerns on the best embodiment of this invention, Sectional front view schematically showing the main part configuration of the 3D modeling machine, Sectional front view schematically showing a main part configuration according to a modified example of the 3D modeling machine, Principle explanatory diagram of the main part configuration of the 3D modeling machine, The perspective view which shows the structure of the three-dimensional modeling mechanism part in the same three-dimensional modeling machine, A perspective view clearly showing the cleaning roller drive mechanism of the 3D modeling mechanism in the 3D modeling machine, Operation (action) explanatory diagram of the 3D modeling machine, Planar configuration diagram schematically showing a 3D modeling mechanism including a control system in the 3D modeling machine, System configuration diagram including external view of the 3D modeling machine,

  1: three-dimensional modeling machine, 2: modeling table, 3: injection head, 4a: chassis coupling unit, 4b: chassis coupling unit, 4c: chassis coupling unit, 4d: chassis coupling unit, 4as ...: support member, 5a: housing Leg part, 5b: Housing leg part, 5c: Housing leg part, 5d: Housing leg part, 12: Rigid member, 13: Elastic member, S: Installation surface, H: Housing part, Hd: Housing bottom part, Hdu: Housing Upper surface of bottom surface portion, Hdd: Lower surface of bottom surface portion of housing, Mo: Three-dimensional modeling mechanism portion, Mx: X direction moving mechanism, My: Y direction moving mechanism, Mz: Z direction moving mechanism, C: Inner chassis portion, Cd: Lower surface of the inner chassis part, A: three-dimensional structure, R: material for modeling, Ra: modeling material, Rs: support material

Claims (4)

  An X-direction moving mechanism for moving the injection head for injecting the modeling material relative to the modeling table, which is placed on the installation surface, and relative to the modeling table in the X direction, with respect to the modeling table A three-dimensional modeling machine comprising: a Y-direction moving mechanism that relatively moves the injection head in the Y direction; and a three-dimensional modeling mechanism unit that has a Z-direction movement mechanism that moves the modeling table relative to the injection head in the Z direction. An inner chassis portion that supports the entire three-dimensional modeling mechanism including at least the X-direction movement mechanism, the Y-direction movement mechanism, and the Z-direction movement mechanism is provided, and the inner chassis portion is provided on the housing portion. The bottom surface of the housing is arranged on the upper surface of the bottom surface of the housing formed in a rectangular shape that constitutes the bottom surface. A plurality of chassis coupling portions that are in contact with the top surface and coupled to each other are located at four corners on the bottom surface of the bottom surface of the housing, and are adjacent to the plurality of housing legs. A three-dimensional modeling machine characterized by being arranged at an intermediate position.   The three-dimensional modeling machine according to claim 1, wherein the chassis coupling portion uses a support member interposed between the housing bottom surface portion and the inner chassis portion.   The three-dimensional modeling machine according to claim 2, wherein a rigid member or an elastic member is used as the support member.   The three-dimensional modeling machine according to claim 1, wherein the modeling material includes a modeling material for modeling a three-dimensional modeling object and a support material for filling a space other than the three-dimensional modeling object.

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