JP2002103460A - Sheet lamination type three-dimensional shaping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet lamination type three-dimensional shaping apparatus capable of easily removing a completed shaped product from a shaping table without damaging the product in a short time. SOLUTION: First, in a state in which all screws 93 are loosened, a stock sheet PB to become the base of the shaped product is adhered to both a fixed member 91 and a movable member 92 of the shaping table 71 by using a double- side adhesive tape BT. After shaping of a three-dimensional shape is completed, the screw 93 corresponding to the member 92 to which the sheet PB is adhered is clamped. Thus, when the member 93 is moved to the side of a screw head 93a (the front side of the table 71), a shearing force is operated between the table BT and the member 92, and both are released from the their interface. As a result, an operator can removed the completed shaped product from the table 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stacking type three-dimensional printing apparatus, and more particularly, to an operation of stacking thin material sheets and cutting the sheets into a predetermined shape.
The present invention relates to a sheet stacking type three-dimensional forming apparatus for forming a three-dimensional shape.

[0002]

2. Description of the Related Art Conventionally, a material sheet having a back surface coated with an adhesive which is melted by heating to generate an adhesive force is sent to an upper surface of an intermediate laminated body which has been laminated on a molding table. The fed material sheet is heated by a heater roller (hot roller) and pressed at the same time to be bonded to the upper surface of the intermediate laminate, and the bonded material sheet follows the contour shape (slice data) of the modeled object corresponding to the height position. 3D modeling machine (LOM: Laminated Obje) that forms a three-dimensional three-dimensional shape by repeating the operation of cutting with a laser beam.
ct Manufacturing) is widely used. The present applicant has also proposed various such sheet-stacking three-dimensional modeling apparatuses (Japanese Patent Application Laid-Open Nos. 11-227073 and 11-227053).
JP-A-11-198235 and the like.

[0003]

By the way, an operator (operator) of the sheet stacking type three-dimensional forming apparatus serves as a base of the formed object on the upper surface of the lowered forming table prior to forming the three-dimensional three-dimensional shape. The material sheet is adhered using a double-sided adhesive tape. The double-sided pressure-sensitive adhesive tape is formed by applying a pressure-sensitive adhesive to both surfaces of a sponge-like substrate made of a synthetic resin. And the operator is a sheet lamination type 3
The operation of the three-dimensional modeling apparatus is started, the material sheet is fed onto the upper surface of the material sheet that is the base of the modeled object, and the intermediate laminate is stacked as described above to perform three-dimensional modeling. Thereafter, when the formation of the three-dimensional three-dimensional shape is completed, the operator inserts a spatula into the sponge-like base material of the double-sided adhesive tape adhered to the lower surface of the material sheet serving as the base of the modeled object, and the sponge-like material is used by the spatula. Gouge up to break the substrate. Then, the double-sided adhesive tape is peeled off from the modeling table, and the completed model can be removed from the modeling table.

[0004] However, the work of removing the completed model from the modeling table using a spatula as described above is a heavy work, so that the burden on the operator is large and the work time is long. (Turn
Around Time) will increase. Further, there is a possibility that the molded article is damaged by the spatula. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a three-dimensional sheet-stacking apparatus capable of easily and quickly removing a completed model from a modeling table without damaging it. Is to provide.

[0005]

Means and Action for Solving the Problems and Effects of the Invention
The invention according to claim 1, which has been made to achieve the above object, comprises: a molding table to which a modeled object to be created is adhered; a material sheet supply means for feeding a material sheet to an upper surface of the modeled object being created; Material sheet bonding means for bonding a sheet to the upper surface of the shaped object being created, material sheet cutting means for cutting the material sheet into a predetermined shape, and applying a shearing force between the shaped object and the modeling table. The gist of the present invention is to provide a separating means for removing the completed model from the modeling table by peeling off the interface between them. Therefore, according to the first aspect of the present invention,
By the separating means for separating the interface between the modeling object and the modeling table by applying a shearing force between the modeling object and the modeling table, the completed modeling object can be easily and quickly removed from the modeling table without damaging it.

Next, a second aspect of the present invention is the first aspect of the present invention.
In the sheet stacking type three-dimensional modeling apparatus according to the above, the separating means includes: a fixed member attached and fixed to the modeling table, a movable member movably attached to the fixed member, and the movable member. Moving means for moving the movable member with respect to the fixed member, wherein the modeled object is bonded to both the fixed member and the movable member, and when the movable member is moved by the moving means, the movable member and the movable member The gist is that a shearing force acts between the shaped object and the interface between the two to separate. In other words, the molded object is adhered to both the fixed member and the movable member, and after the molding is completed, the movable member is simply moved by the moving means, and the shearing force acts between the movable member and the molded object to cause the two to move. Is peeled off, and the completed model can be removed from the modeling table. Here, since the shearing force only peels off the interface between the movable member and the object, it is possible to prevent the object from being damaged.

According to a third aspect of the present invention, as in the third aspect of the present invention, there is provided a three-dimensional sheet forming apparatus according to the second aspect of the present invention.
The moving means may include a screw that is screw-engaged with the fixed member and the movable member. That is,
With the screw loosened, the modeled object is bonded to both the fixed member and the movable member, and after the modeling is completed, just by tightening the screw, a shearing force acts between the movable member and the modeled object. As a result, the interface between the two is peeled off, and the completed model can be removed from the modeling table. Here, since a large force and a long time are not required to rotate the screw, the completed model can be easily and quickly removed from the modeling table.

[0008] The components described in the above [Claims] and [Means for Solving the Problems and Effects of the Invention] and the components described in [Embodiments of the Invention] described later The correspondence is as follows.
“Material sheet supply means” corresponds to the material sheet supply device 20. The “material sheet bonding unit” includes a heating / pressing device 30 and a moving device 50. “Material sheet cutting means” includes a cutting device 40 and a moving device 50. The “separating unit” includes a fixed member 91, a movable member 92, and a screw 93 that constitute the modeling table 71.
The “moving means” includes a U-shaped groove 91d of the support portion 91b, a female screw hole 92a of the movable member 92, and a screw 93.
The “modeled object being created” corresponds to the intermediate laminate W.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. [Main Configuration of the Present Embodiment] FIG. 1 is a perspective view showing a schematic configuration of a sheet laminated type three-dimensional printing apparatus 10 of the present embodiment. FIG. 2 is a plan view of a main part of the sheet lamination type three-dimensional printing apparatus 10. 3 to 7 are overall front views showing a schematic configuration in an operating state of the sheet stacking type three-dimensional printing apparatus 10.

The sheet stacking type three-dimensional modeling apparatus 10 includes a material sheet supply device 20 for feeding a material sheet P to the upper surface of the intermediate laminate W stacked up to that time, and heating the fed material sheet P to heat the intermediate laminate W. A heating and pressing device 30 for pressing and bonding the upper surface of the sheet, a cutting device 40 for cutting the bonded material sheet P into a predetermined shape, and a moving device 50 for moving the heating and pressing device 30 and the cutting device 40 to predetermined positions.
And an elevating device 70 for elevating and lowering the intermediate laminate W, and a control device 80.

The control device 80 includes a CPU, ROM, RA
Each device 2 includes a known microcomputer having M and I / O circuits, and operates according to a control program (computer program) recorded in a built-in ROM.
0, 30, 40, 50 and 70 are controlled. The material sheet P is formed of good quality paper, and the back surface thereof is coated with a hot melt adhesive such as an ethylene-vinyl acetate copolymer. This adhesive melts when heated and produces an adhesive force when cooled.
The material sheet P is not limited to paper, and may be formed of a film of a synthetic resin (for example, polyethylene terephthalate).

The elevating device 70 includes a modeling table 71, a saddle 72, a Z-direction guide rail (Z-axis slide) 73a,
73b, an elevating feed screw 74, an elevating motor 75, and a limit switch 77 are provided. As shown in FIGS.
The modeling table 71 is detachably mounted and fixed on a saddle 72. The rear side of the saddle 72 is slidably fitted to each of the Z-direction guide rails 73a and 73b to be guided and supported. Each Z-direction guide rail 73a, 73b is
The molding table 71 is attached to and fixed to a rear machine frame (not shown) on the rear side of the sheet stacking type three-dimensional molding device 10 so as to be arranged at predetermined intervals in the left-right direction and extend in the vertical direction (Z direction). ing. An intermediate portion of each of the Z-direction guide rails 73a and 73b in the saddle 72 is
4 is screw-engaged. The elevating feed screw 74 is integrated with the motor shaft of the elevating motor 75 attached and fixed to the machine frame, and is driven to rotate about a vertical axis. Therefore, the elevating feed screw 74 is rotationally driven by the elevating motor 75 controlled by the control device 80, and the molding table 71 is thus rotated.
Are each Z-direction guide rail 7 while keeping its upper surface horizontal.
3a and 73b slide up and down.

FIGS. 11 and 12 show a molding table 71.
FIG. 13 is a sectional view taken along line AA in FIG. 11, and FIG. 14 is a sectional view taken along line AA in FIG. FIG. 15A is an enlarged view of a main part of FIG.
(B) is an enlarged view of a main part of FIG. 14. The modeling table 71 having a substantially rectangular flat plate shape as a whole includes a fixed member 91, a movable member 92, and screws 93. The fixing member 91 is detachably mounted and fixed on the saddle 72. Fixing member 91
A plurality (five in the present embodiment) of grooves 91a having the same shape are formed on the upper surface of the sheet lamination parallel to the horizontal front-rear direction (Y direction) of the sheet stacking type three-dimensional printing apparatus 10. A support 91b is formed at the front end of the fixing member 91, and a gap 91c is formed between the support 91b and each groove 91a.

An elongated plate-shaped movable member 92 is slidably embedded in each groove 91a, and the upper surface of the fixed member 91 except for each groove 91a and the upper surface of each movable member 92 are flush with each other. I have. At the front end of each movable member 92, a female screw hole 92a is formed in the longitudinal direction of the movable member 92. Each of the movable members 9 is provided on the support portion 91b of the fixed member 91.
Each U-shaped groove 91d is formed at a position corresponding to the second female screw hole 92a.

Each screw 93 is connected to the supporting portion 9 of the fixing member 91a.
From the front side of 1b, it is inserted into the female screw hole 92a of the movable member 92 via the U-shaped groove 91d and the gap 91c. Each screw 93 is rotatably fitted to and supported by the support portion 91b, and is screw-engaged with the movable member 92.
Each screw 93 is formed with a screw head 93a and a flange 93b. No screw is formed between the screw head 93a and the flange 93b, and the screw 93 has a cylindrical shape. The U-shaped groove 91d is fitted in the U-shaped groove 91d, and is sandwiched between the screw head 93a and the flange 93b. On the screw head 93a of each screw 93, a pattern pattern (for example, a parallel groove or a knurl) that is easy for an operator to grasp and turn is engraved.

As a result, when the screw 93 is loosened,
As shown in FIG. 1, FIG. 13 and FIG.
The movable member 92, which is screw-engaged, moves to the opposite side of the screw head 93a (the rear side of the molding table 71) while sliding with the groove 91a, and expands the gap 91c. Conversely, when the screw 93 is tightened, as shown in FIGS. 12, 14, and 15B, the movable member 92 screwed to the screw 93 is engaged.
Moves toward the screw head 93a (the front side of the molding table 71) while sliding with the groove 91a to narrow the gap 91c. When the gap 91c comes into contact with the support portion 91b and stops, the gap 91c is eliminated. In this manner, by rotating the screw 93, the movable member 92 screwed to the screw 93
Can be moved relative to the fixing member 91 in the Y direction.

As shown in FIGS. 3 to 7, the sheet feeding device 20 includes guide rollers 21a, 21b, 25a, 25b,
Feed roller 22, motors 23 and 24, supply side roll P
a, a recovery-side roll Pb. Guide rollers 21a and 21b are provided on the left and right sides of the upper end of each of the Z-direction guide rails 73a and 73b, respectively. A feed roller 22 that is in rolling contact with the guide roller 21a is provided above the guide roller 21a, and the feed roller 22 is driven to rotate about a horizontal Y-axis by a motor 23 fixed to the machine frame. A collection-side roll Pb is disposed below and to the right of the guide roller 21b.
A supply-side roll Pa is provided below b. Each of the rolls Pa and Pb is formed in a cylindrical shape by winding a material sheet P around a tubular material (not shown). Collection side roll Pb
Is driven to rotate about a horizontal axis in the Y direction by a motor 24 fixed to the machine frame. Each Z-direction guide rail 73
Guide rollers 25a and 25b are disposed on the left and right sides of the lower end of the a and 73b, respectively. Each guide roller 21
a, 21b, 25a, 25b and supply-side roll Pa
Are supported by the machine frame so as to be rotatable about the horizontal axis in the Y direction. The motors 23 and 24 are controlled by the control device 80.

The material sheet P pulled out from the supply roll Pa first passes through the guide roller 25b, then passes below the shaping table 71, and then changes direction vertically upward by the guide roller 25a. The guide roller 21a passes between the guide roller 21a and the feed roller 22 and passes through the guide roller 21a.
Then, the direction is changed to a horizontal left-right direction (X direction), and then passes over the upper surface of the modeling table 71, and is then wound up by the collection-side roll Pb via the guide roller 21b.

As shown in FIG. 1, the heating and pressing device 30 comprises:
A heater roller (hot roller) 31, a heater cartridge 32, and a temperature sensor 34 are provided. Heater roller 3
1 is made of substantially cylindrical stainless steel. A heater cartridge 32 composed of a cylindrical ceramic heater is inserted into the heater roller 31.
The length of the heater roller 31 is set longer than the width of the material sheet P. The controller 80 controls the heater roller 3
1, the power supply to the heater cartridge 32 is controlled based on the detection signal of the temperature sensor 34 for detecting the temperature of the outer peripheral surface of the heater roller 31 to maintain the temperature of the outer peripheral surface of the heater roller 31 at a predetermined temperature (for example, about 280 to 300 ° C.). Heat to drip.

As shown in FIGS. 1, 3 to 7, the cutting device 40 comprises a laser oscillator 41, mirror boxes 42 to 4
5. A laser torch 46 is provided. Laser oscillator 41
Generates a laser beam L of a carbon dioxide gas laser, and the laser beam L is reflected by mirrors (not shown) built in each of the mirror boxes 42 to 45 to form a laser torch 46.
The material sheet P that is irradiated downward from above and is adhered to the upper surface of the intermediate laminate W is cut. At this time, the control device 80
Controls the laser oscillator 41 to adjust the output of the laser beam L so as to cut the material sheet P to a depth slightly larger than the thickness of one sheet. In addition, the cutting device 40
The cutting mechanism is not limited to the one using a laser as described above, and may be replaced with one using any cutting mechanism (for example, an ultrasonic cutter).

The moving device 50 includes an X-direction frame 51a,
51b, Y-direction carriage 52, moving head 53, pulleys 54a, 54b, 58a, 58b, drive belt 55,
59, motors 56 and 60, and a heater slide (heater moving table) 57. As shown in FIG. 2, the X-direction frames 51 a and 51 b, which are long rectangular tubes, are spaced apart from each other by a predetermined distance in the horizontal front-rear direction (Y direction) of the sheet stacking type three-dimensional printing apparatus 10. The sheet stacking type three-dimensional modeling apparatus 10 is attached and fixed to the front and rear machine frames (not shown) so as to sandwich the P and extend in the horizontal left-right direction (X direction). . still,
The X direction and the Y direction are orthogonal.

Each of the elongated plate-like Y-direction carriages 52
A horizontal front-rear direction (Y direction) orthogonal to each X-direction frame 51a, 51b above the direction frames 51a, 51b.
Are extended so as to extend to each X-direction frame 51a,
An X-direction guide rail (not shown) attached and fixed to the upper surface of 51b is slidably fitted and guided and supported. A mirror box 44 is attached and fixed above the rear end of the Y-direction carriage 52.

A moving head 53 provided with a mirror box 45 and a laser torch 46 is disposed above the Y-direction carriage 52. The moving head 53 is guided and supported so as to be able to reciprocate along the longitudinal direction (Y direction) of the Y-direction carriage 52, and is reciprocated by a driving mechanism (not shown) controlled by the control device 80. As a driving mechanism for moving the moving head 53, a mechanism using a feed screw in the same manner as the elevating mechanism of the modeling table 71, or a mechanism using a pulley and a driving belt in the same manner as a moving mechanism for the Y-direction carriage 52 described later. ,and so on.

As shown in FIGS. 3 to 7, pulleys 5 are provided at both left and right ends of each of the X-direction frames 51a and 51b.
4a and 54b are attached and fixed (not shown).
A drive belt 55 is hung between a and b, and the Y-direction carriage 52 is fixedly mounted on the drive belt 55. The pulley 54b is supported by the machine frame so as to be rotatable around a horizontal axis in the Y direction. The pulley 54a is driven to rotate about a horizontal Y-axis by a motor 56 fixed to the machine frame. Therefore, when the pulley 54a is rotationally driven by the motor 56 controlled by the control device 80, the drive belt 55 moves in conjunction therewith, and the pulley 54b rotates, and with the movement of the drive belt 55, the Y-direction carriage 52 is each X direction frame 51a,
Reciprocating parallel movement is performed along the longitudinal direction (X direction) of 51b. As a result, the laser torch 46 provided on the moving head 53 moves the modeling table 71 supporting the intermediate laminate W.
Is moved in the X direction and the Y direction, and its trajectory is controlled by the control device 80 based on the three-dimensional CAD data. That is, the trajectory of the laser beam L emitted from the laser torch 46 to the material sheet P is controlled by the control device 80 based on the three-dimensional CAD data.

As shown in FIG. 2, an elongated plate-shaped heater slide 57 is disposed below the X-direction frames 51a and 51b and is orthogonal to the X-direction frames 51a and 51b in the front-rear direction (Y direction). , And is slidably fitted and guided and supported by an X-direction guide rail (not shown) attached and fixed to the lower surface of each of the X-direction frames 51a and 51b. As shown in FIGS. 3 to 7, a heater roller 31 is supported on the lower surface of the heater slide 57 along the longitudinal direction thereof so as to be rotatable around a horizontal axis in the Y direction and to be able to move up and down to some extent.

As shown in FIGS. 3 to 7, pulleys 5 are provided at both left and right ends of each of the X-direction frames 51a and 51b.
8a and 58b are attached and fixed, and each pulley 58a and 58b
A drive belt 59 is hung between them, and a heater slide 57 is attached and fixed to the drive belt 59. Pulley 58
b is supported by the machine frame so as to be rotatable about the horizontal axis in the Y direction. The pulley 58a is driven to rotate around a horizontal Y-axis by a motor 60 fixed to the machine frame. Therefore, when the pulley 58a is rotationally driven by the motor 60 controlled by the control device 80, the drive belt 59 moves in conjunction therewith and the pulley 58b rotates, and the heater slide 57 moves with the movement of the drive belt 59. Is reciprocally translated along the longitudinal direction (X direction) of each of the X-direction frames 51a and 51b. As a result, the heater roller 31 whose outer peripheral surface is heated by being supported by the heater slide 57 moves on the material sheet P sent to the upper surface of the intermediate laminated body W that has been laminated by the movement of the heater slide 57. Rolls and heats the material sheet P, and at the same time, the intermediate laminate W
The material sheet P is pressed and adhered to the upper surface of the substrate.

As shown in FIGS. 2 to 7, a lower limit switch 7 is provided on the lower surface of the heater slide 57 at a substantially central portion in the longitudinal direction.
7 are provided. When the upper surfaces of the intermediate laminate W and the material sheet P that rise together with the molding table 71 reach a predetermined height, the limit switch 77
It operates in contact with. The control device 80 stops the rotation of the lifting / lowering motor 75 based on the operation of the limit switch 77, so that the height of the material sheet P placed on the intermediate laminate W is slightly higher than the lower surface of the heater roller 31. At this time, the ascent of the modeling table 71 is stopped.
The stop position of the molding table 71 can be arbitrarily set by changing the position where the limit switch 77 operates.

[Operation of this embodiment] Next, the operation of this embodiment will be described. FIG. 8 is an explanatory diagram for explaining a molding cycle of a three-dimensional three-dimensional shape (molded object). FIG. 9 is a plan view showing the lines M1 to M4, which are cutting locations (cutting lines) of the intermediate laminate M during modeling. FIG. 10 is a cross-sectional view of the intermediate laminate M during molding.

First, the operator of the sheet stacking type three-dimensional modeling apparatus 10 performs the operation shown in FIG.
As shown in FIGS. 13 and 15A, by loosening all the screws 93 of the molding table 71, all the movable members 92 are moved to the opposite side of the screw head 93a (the rear side of the molding table 71). Then, the gap 91c is expanded. And
As shown in FIG. 3, at a substantially central portion of the upper surface of the modeling table 71 lowered, a material sheet P serving as a base of a model to be created so as to cover both the fixed member 91 and the movable member 92.
B is adhered using a double-sided adhesive tape BT (see FIG. 10), and then the control device 80 is activated. In the example illustrated in FIG. 11, the material sheet PB is bonded to both the one movable member 92 at the center of the modeling table 71 and the fixed members 91 on both sides thereof using a double-sided adhesive tape BT.
The material sheet PB is obtained by cutting the material sheet P into a predetermined size and shape. Further, the double-sided pressure-sensitive adhesive tape BT is formed by applying a pressure-sensitive adhesive to both surfaces of a sponge-like substrate made of a synthetic resin.

When the control device 80 is started, the following processing operations are executed by various types of arithmetic processing by a computer according to a control program recorded in a built-in ROM. A computer-readable recording medium (semiconductor memory (memory stick, etc.), hard disk, floppy (registered trademark) disk, data card (IC card, magnetic card, etc.), optical disk (CD-ROM, CD-ROM) R, CD-RW, DV
D), a magneto-optical disk (eg, MD), a phase-change disk, a magnetic tape, etc.), and the program may be loaded into the control device 80 as needed and activated to be used. .

First, as shown in FIG. 4, the control device 80 operates the motor 60 to move the heater slide 57 to the left so that the limit switch 77 is engaged with the material sheet PB. Motor 75
To raise the modeling table 71,
When the limit switch 77 contacts the upper surface of the material sheet PB, the ascent of the modeling table 71 is stopped. Then, the control device 80 moves the heater slide 57 rightward to the reference position shown in FIG. 3 by operating the motor 60.

Next, the control device 80 operates the cutting device 40, and as shown in FIG. 9 and FIG.
By irradiating B with the laser beam L from the laser torch 46, the material sheet PB is cut along the square outer contour M1 that is the outermost of the intermediate laminate W.
Thereafter, the control device 80 operates the motor 56 to move the moving head 53 rightward to the reference position shown in FIG. Then, the control device 80 removes the portion of the material sheet PB outside the outer contour line M1 from the upper surface of the modeling table 71 by lowering the modeling table 71. Note that, instead of cutting the material sheet PB along the outer contour line M1, the material sheet PB may be cut along the later-described inner contour line M2 or molding contour line M3 and the dividing line M4.

Subsequently, the operator sets the supply-side roll Pa
The material sheet P drawn out from each of the guide rollers 21b, 2
1a, 25a, and 25b, and the leading end of the material sheet P is wound around a collection roll Pb.
Operate 0. Then, the control device 80 controls each motor 2
The material sheet P is lightly tensioned by 3 and 24, and each member is brought into a state shown in FIG. 3 and FIG. Next, the controller 80 moves the heater slide 57 to the left by operating the motor 60, and as shown in FIG.
Only the limit switch 77 is stopped at the position where it is applied to the intermediate laminate W. The control device 80 controls the lifting motor 7
5, the modeling table 71 is raised, and the upper surface of the intermediate laminated body W (the material sheet PB serving as the base of the modeled object in the case of the first rising) abuts against the lower surface of the material sheet P and is slightly When the limit switch 77 comes into contact with the upper surface of the material sheet P, the elevation of the modeling table 71 is stopped, and the stop position of the modeling table 71 is stored in the built-in RAM.

Subsequently, the controller 80 reciprocates the heater slide 57 in the left-right direction (X direction) by operating the motor 60 as shown in FIG.
As shown in the figure, the heater roller 31 heated to a predetermined temperature
Is reciprocatingly rolled while being pressed against the material sheet P abutting on the upper surface of the intermediate laminate W (in the case of the first operation, the material sheet PB serving as the base of the modeled object). Then, the material sheet P is heated to melt the hot melt adhesive on the back surface, and at the same time, the back surface of the material sheet P is
(Or the material sheet PB) is pressed and adhered to the upper surface. Next, the control device 80 operates the motor 60 to move the heater slide 57 rightward to the reference position shown in FIG. Then, as shown in FIGS. 1, 6, 8C, 9, and 10, the control device 80 operates the cutting device 40, and the intermediate laminate W (the first In the case of the operation of (1), the material sheet P newly cut on the upper surface of the material sheet PB) serving as the base of the modeled object is irradiated with the laser beam L to cut the material sheet P.

Subsequently, the control device 80 operates the motor 56 to move the moving head 53 rightward to the reference position shown in FIG. Thereafter, the control device 80
Operates the elevating motor 75 to lower the modeling table 71 to the position shown in FIG. Then, the control device 80 determines whether or not the formation of the three-dimensional three-dimensional shape is completed.
24, the cut-out portion of the material sheet P is sent to the collection-side roll Pb, and the material sheet P is newly pulled out from the supply-side roll Pa and sent to the upper surface of the intermediate laminate W.

By repeating the above operation, the intermediate laminated body W gradually becomes thicker, and the stop position of the molding table 71 on the material sheet PB serving as the base of the molded article and the molding table 71 on the material sheet P bonded this time are determined. The height given by the difference from the stop position gradually increases.
Then, the control device 80 completes the formation of the three-dimensional solid shape when the difference between the height given by the difference between the stop positions and the height of the formed object in the completed state is smaller than the thickness of the material sheet P. Each device 2
The operations of 0, 30, 40, 50 and 70 are stopped.

Thereafter, the operator checks the state shown in FIGS.
As shown in FIG. 15B, in the modeling table 71, the movable member 92 is tightened with the screw 93 corresponding to the movable member 92 to which the material sheet PB serving as the base of the model is adhered, so that the movable member 92 is screwed to the screw head 93 a. (The front side of the modeling table 71) to narrow the gap 91c.
Then, as the movable member 92 moves, the material sheet P
A shear force acts between the double-sided adhesive tape BT adhered to the lower surface of B and the moving movable member 92, and the interface between the double-sided adhesive tape BT and the modeling table 71 is peeled off. As a result, the operator can remove (separate) the completed model from the modeling table 71.

As shown in FIG. 10, the laser torch 4
When the material sheet P is cut by the laser beam L irradiated from 6, the shaping contour line M3 → the dividing line M4 → the inner contour line M2 → the outer contour line M1 is cut in this order. Control device 8
0 is the contour shape of the modeled object corresponding to the height position given by the difference between the stop position of the modeling table 71 on the material sheet PB serving as the base of the modeled object and the stop position of the modeling table 71 on the material sheet P bonded this time. (Slice data) is calculated, and the laser torch 46 (moving head 5) is moved so that the inner edge of the shaping contour line M3 having a width slightly larger than the diameter of the laser beam L matches this slice data.
3) is moved in the X direction and the Y direction. Here, the locus of the outer contour line M1, the inner contour line M2, and the division line M4 is the same for all the layers of the intermediate laminated body W, and the molding contour line M3 of the material sheet P of each layer forming the intermediate laminated body W Is continuous in the vertical direction.

[Operation / Effect of this Embodiment] As described above in detail, in this embodiment, the material sheet PB serving as the base of the molded article is attached to the double-sided adhesive tape BT with all the screws 93 loosened. Fixing member 91 of modeling table 71 using
After the formation of the three-dimensional three-dimensional shape is completed, simply tighten the screw 93 corresponding to the movable member 92 to which the material sheet PB is adhered, and the double-sided adhesive tape BT and the The movable member 92 (the molding table 7)
1) By applying a shearing force between them and exfoliating the interface between them,
The completed model can be removed from the modeling table 71.

Here, since a large force and a long time are not required to rotate the screw 93, the completed model can be easily and quickly removed from the modeling table 71. Further, since a pattern is formed on the screw head 93a of each screw 93 so that the operator can easily grasp and turn the screw 93, the operator can quickly turn the screw 93 with a small force without using a tool for rotating the screw 93. Can be rotated.

The shearing force acting between the double-sided adhesive tape BT and the movable member 92 in accordance with the movement of the movable member 92 of the molding table 71 is reduced by the double-sided adhesive tape BT and the molding table 7.
Since only the interface with 1 is peeled off, the molded article is not damaged.

[Other Embodiments] It should be noted that the present invention is not limited to the above-described embodiment, and may be modified as follows. The effect can be obtained. (1) When forming a three-dimensional three-dimensional shape having the same size as the planar dimension of the upper surface of the modeling table 71, a material in which a predetermined number (for example, about 20) of adhesive materials are laminated without using the double-sided adhesive tape BT. The sheet P may be used instead of the double-sided adhesive tape BT. In this case, first, the material sheet P is directly adhered to the upper surface of the modeling table 71 by using an adhesive on the back surface of the material sheet P, and then a predetermined number of the material sheets P are adhered and laminated. The intermediate laminated body W is formed on the material sheet P bonded and laminated by the number of sheets, and finally, the material sheet P bonded and laminated by a predetermined number of sheets.
A shear force is applied between the movable member 92 and the movable member 92 to separate the interface therebetween, and the completed model is removed from the modeling table 71. That is, a predetermined number of the material sheets P bonded and laminated are used as discarded paper.

(2) In the above embodiment, the material sheet P is cut by the laser beam L after bonding, but the material sheet P may be cut by the laser beam L and then bonded. (3) In the above embodiment, the pulley 5 is used as the moving device 50.
4a, 54b, 58a, 58b and drive belts 55, 59
Was adopted, but the applicant's already-published gazettes (JP-A-11-227053, JP-A-11-198235)
, A mechanism using a feed screw may be adopted.

(4) In the above embodiment, the material sheet P to which the adhesive which melts by heating to generate an adhesive force is used, but the adhesive which generates the adhesive force only by pressing is applied. The material sheet P may be used. Further, as disclosed in JP-A-11-235762, an adhesive is supplied between the material sheets P by electrostatic transfer to interpose an adhesive layer, and the material sheets P are interposed via the adhesive layer. You may make it adhere. And, JP-A-6-1
As disclosed in Japanese Patent Publication No. 90929, a material sheet P coated with a photocurable adhesive is used, and the material sheet P is bonded by irradiating light to cure the photocurable adhesive. Good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a sheet lamination type three-dimensional printing apparatus according to an embodiment of the invention.

FIG. 2 is a plan view of a main part of the three-dimensional sheet forming apparatus according to the embodiment.

FIG. 3 is an overall front view showing a schematic configuration in an operating state of the sheet lamination type three-dimensional printing apparatus of one embodiment.

FIG. 4 is an overall front view showing a schematic configuration in an operating state of the sheet stacking type three-dimensional printing apparatus of one embodiment.

FIG. 5 is an overall front view showing a schematic configuration in an operating state of the sheet lamination type three-dimensional printing apparatus of one embodiment.

FIG. 6 is an overall front view showing a schematic configuration in an operating state of the sheet stacking type three-dimensional printing apparatus of one embodiment.

FIG. 7 is an overall front view showing a schematic configuration in an operating state of the sheet stacking type three-dimensional printing apparatus of one embodiment.

FIG. 8 is an explanatory diagram illustrating a molding cycle of a three-dimensional three-dimensional shape according to the embodiment.

FIG. 9 is a plan view showing cut portions of the intermediate laminate during molding according to one embodiment.

FIG. 10 is a cross-sectional view of an intermediate laminate during modeling in one embodiment.

FIG. 11 is a plan view of a modeling table according to one embodiment.

FIG. 12 is a plan view of a modeling table according to one embodiment.

FIG. 13 is a sectional view taken along line AA in FIG. 11;

FIG. 14 is a sectional view taken along line AA in FIG. 12;

FIG. 15A is an enlarged view of a main part of FIG. 13; FIG.
(B) is an enlarged view of a main part of FIG. 14.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Sheet lamination type three-dimensional shaping apparatus 20 ... Material sheet feeding apparatus 30 ... Heat press apparatus 31 ... Heater roller 40 ... Cutting apparatus 50 ... Moving apparatus 70 ... Elevating apparatus 71 ... Modeling table 91 ... Fixed member 92 ... Movable member 93 ... Screw 93a: Screw head 93b: Flange 91b: Supporting part 91d: U-shaped groove 92a: Female screw hole P: Material sheet PB: Material sheet serving as a base of a molded article W: Intermediate laminate

Claims (3)

[Claims] A molding table to which a model to be created is bonded; a material sheet supply unit for feeding a material sheet to an upper surface of the model to be created; and a material sheet to be bonded to an upper surface of the model to be created. A material sheet bonding means, a material sheet cutting means for cutting the material sheet into a predetermined shape, and a shearing force acting between the modeled object and the modeling table to peel off an interface therebetween, thereby completing the completed modeling A sheet stacking type three-dimensional modeling apparatus, comprising: separating means for removing an object from the modeling table. 2. The three-dimensional sheet forming apparatus according to claim 1, wherein the separating unit includes: a fixed member fixed to the shaping table; and a movable member movably mounted to the fixed member. A movable member for moving the movable member with respect to the fixed member, wherein the object is bonded to both the fixed member and the movable member, and the movable member is moved by the movable member. Then, a shearing force acts between the movable member and the modeled object, and an interface between the movable member and the modeled object is peeled off. 3. The sheet stacking type three-dimensional printing apparatus according to claim 2, wherein the moving unit includes a screw that is screwed with the fixed member and the movable member. 3D modeling equipment.