JPH0698690B2 - Three-dimensional shape forming method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for forming a three-dimensional shape, and an article having a three-dimensional shape using a photocurable resin that is cured by irradiation with light. The present invention relates to a method for molding and manufacturing.

[Conventional technology]

The method of molding a three-dimensional shape using a photocurable resin is a method of forming a complicated three-dimensional shape easily and with high precision without using a molding die or a special processing tool. It is considered to be used for manufacturing a product model, a three-dimensional model, etc., and disclosed in, for example, JP-A-56-144478, JP-A-62-35966, and JP-A-61-114817. This is shown in FIG. 9 as an example of a general molding method. By irradiating the liquid photocurable resin 2 stored in the resin liquid tank 1 with a light beam 3 such as a laser beam condensed by a condenser lens 30 from above the liquid surface, the focus of the light beam 3 is obtained. The photocurable resin 2 near the position to a certain depth from the liquid surface is cured, and the light beam 3
By sequentially moving the irradiation position of, the photo-cured layer 4a having a predetermined pattern is formed. If a new photocurable resin liquid 2 is supplied onto the photocurable layer 4a and the photocurable resin liquid 2 is cured again by the light beam 3 in a predetermined pattern, the photocurable layer 4a is cured. A photo-curable layer 4a having another pattern is formed on the. In this way, by sequentially stacking a plurality of photo-curing layers 4a, the molded product 4 having a desired three-dimensional shape can be molded.

However, in the above method, since it is necessary to use a liquid material having a relatively low molecular weight as the photocurable resin,
There is a drawback that it takes a long time to cure and the shrinkage at the time of curing becomes large. If a high molecular weight resin material is used to solve such a defect, the viscosity becomes high, and it takes a long time to supply and fill the resin liquid tank and smooth the surface after the supply. Become.

In Japanese Patent Laid-Open No. 63-39324, a photosensitive plate made of a photopolymerizable photosensitive material is irradiated with light passing through an exposure pattern film to expose the photosensitive plate, and then the exposed photosensitive plate is bonded with an adhesive. It is disclosed a method of laminating and integrating with each other by adhering with each other. In this way, when a solid plate-shaped material is used, it is not necessary to use a liquid low molecular weight photopolymerizable photosensitive material, that is, a photocurable resin. Less. Further, since a resin liquid tank or the like for containing the photocurable resin liquid is unnecessary, it is possible to form a large area having a large area.

[Problems to be Solved by the Invention]

However, in the above-mentioned method, after exposing a plurality of layers of exposed plates separately to form a so-called photo-cured layer, the layers are laminated with an adhesive between them, which makes the application of the adhesive very difficult. Since it is troublesome and it takes a long time to dry the adhesive, there is a problem that the overall work efficiency is reduced.

Further, in general, the adhesive is not photocurable and is made of a material different from the photocurable resin that is the material of the exposure plate, so that the adhesive part appears in stripes and becomes unsightly in appearance, In terms of quality, the adhesive part will be different from other photo-curable resin parts. Therefore, for example, when the laminated exposed plate is subjected to a solvent treatment to dissolve and remove the unexposed portion other than the photocurable layer, the adhesive is removed, and the adhesive strength is reduced or the exposed plate is peeled off. I have a problem. Further, since the liquid adhesive is applied, it is difficult to strictly control the thickness accuracy of the adhesive portion,
There is also a problem in that the outer shape accuracy of a molded product formed by stacking exposure plates is reduced.

Further, in JP-A-63-139730, a porous plate-shaped base material is impregnated with a photocurable resin, and the base material is irradiated with light in a predetermined pattern to form a photocurable layer, A method of stacking these to form a three-dimensional shape is disclosed. But,
In this method, since the base material is interrupted at the boundary between the upper and lower photo-curing layers, the continuity of the structure is lost, and the strength at the boundary becomes poor. In addition, the presence of the base material changes the characteristics of the photo-curable layer, and the number of labor-intensive steps of preparing the base material and impregnating the base material with the photo-curable resin is increased. There is also a problem that the step of removing the base material also takes time.

Therefore, an object of the present invention is to form a photocurable layer by irradiating a plate-shaped photocurable material with light as described above, and stack the photocurable layers to form a three-dimensional shape.
By eliminating the problems of the prior art due to the use of adhesives, etc., it is possible to easily manufacture molded products that have high lamination strength of photocurable materials and are difficult to peel off, and that have excellent quality performance such as external accuracy. It is to provide a method of forming a three-dimensional shape that can be performed.

[Means for Solving the Problems]

In the method for forming a three-dimensional shape according to the present invention, which solves the above-mentioned problems, the invention according to claim 1 irradiates a photocurable resin with light to form a photocurable layer, and a plurality of the photocurable layers are formed. In a method of stacking layers to form a desired three-dimensional shape, a photocurable plate made of a photocurable resin and having heat adhesiveness is irradiated with light to form a photocurable layer and a photocurable plate. The shapes are heat-bonded and stacked.

The material of the photocurable resin includes a polymer polyfunctional photopolymer, a polymer + polyfunctional oligomer, a polyfunctional oligomer, and the like, which is a resin having a so-called photocurability that is cured by irradiation with light. In this case, materials that have been used as conventional ordinary photosensitive resin letterpress materials, film-like photoresist materials (dry films) for processing printed wiring boards, and the like can be used.

The photocurable plate is a so-called solid plate such as a film or sheet formed from the above-mentioned photocurable resin. As the photocurable plate-like body, one having a shape-maintaining property such that it can be handled and having flexibility capable of being deformed to some extent is used. As the photo-curable plate, one having a so-called heat-adhesive property that is melted and softened by heating to exhibit adhesiveness is used. In particular,
For example, those that exhibit self-adhesiveness by being softened, melted or fluidized in a heating temperature range of about 60 to 150 ° C. are preferable. The thickness of the photocurable plate-like body varies depending on the processing accuracy and shape dimensions required for the three-dimensional molded product to be formed, but is, for example, about 10 to 100 mm.

As a method of irradiating the photocurable plate with light to form a photocurable layer having a predetermined pattern, a method of moving and irradiating a light beam according to a predetermined pattern is usually used. As the light beam, a light beam having an arbitrary wavelength component such as visible light or ultraviolet light is used according to the characteristics of the photocurable resin material. If the movement of the light beam is automatically controlled by a computer or the like and is linked with a CAD / CAM device, the photocured layer having a predetermined pattern can be formed extremely accurately and easily.

As the method for forming the photocurable layer, in addition to the method using the above-mentioned light beam, a method in which a mask film having a predetermined pattern is superposed on the photocurable plate and then the whole surface is irradiated with light to be collectively exposed is adopted. it can.

To stack the photo-curable plate-like materials by heating and bonding, for example, after stacking the uncured photo-curable plate-shaped product on the photo-curable plate-shaped product on which the photo-curable layer is formed, The uncured photocurable plate may be melted and softened by heating by irradiating an infrared lamp from above, and the photocurable plate below may be adhesively laminated. As the heating means, in addition to the infrared lamp, a usual heating and laminating means such as a dry film laminator can be adopted. The heating temperature is set to an appropriate temperature according to the resin material of the photocurable plate. If the photocurable plate-like body is pressed or pressure-bonded at the same time as heating, it can be more reliably bonded.

Air stacks or gaps,
It is necessary to adhere so that so-called voids do not occur. Therefore, if the heating and pressure bonding are performed in a vacuum, no void is generated, and a good adhesive surface and high adhesive strength can be obtained.

The heating is preferably performed from the uncured photocurable plate side. This is because when the photocurable plate on which the photocurable layer is formed is heated strongly, the shape of the photocurable layer may be deformed, whereas the uncured photocurable plate is deformed by heating. Even if the photo-curable layer is formed by irradiating the uncured photo-curable plate with light after being heat-bonded, the shape of the photo-cured layer itself is adversely affected by heating. The reason is that it does not occur and is formed into an accurate shape. However, it is also possible to heat and melt only the surface of the cured photo-curable plate, and to bond the uncured photo-curable plate to the heated and melted surface. It is also possible to heat and melt the surface of the body for adhesion. Furthermore, a method of heating and melting the facing surfaces of the photocurable plate-shaped bodies on which the photocurable layer is formed in advance and stacking them can also be adopted.

When the uncured photocurable plate is stacked on the cured photocurable plate, the uncured photocurable plate is irradiated with light by the means described above. Forming a photocurable layer,
By repeating such a process of forming a photo-cured layer by irradiation of light and a process of heating and bonding, a molded article having a desired three-dimensional shape can be obtained. As mentioned above,
When the cured photocurable plate-like bodies are heat-bonded, it is also possible to form the photocurable layer on the required number of photocurable plate-like bodies in advance and then collectively heat-bond them.

The invention according to claim 2 is a method of forming a photocurable layer by irradiating a photocurable resin with light, and stacking a plurality of the photocurable layers to form a desired three-dimensional shape. To the outer peripheral surface of the roller member with a predetermined thickness in a layered manner,
After transferring this photo-curable layered body from the outer peripheral surface of the roller member onto a flat light irradiation base, irradiating the flat photo-curable layered body with light to form a photo-curable layer, The photo-curing layers are stacked on the base.

As the material of the photocurable resin, the same material as that of the invention of claim 1 is used. However, in the present invention, since the photocurable resin is handled in a state of being adhered to the outer peripheral surface of the roller member, it is relatively flexible as long as it does not cause large dimensional shrinkage or deformation when forming the photocurable layer. It may be in a state of being easily deformed. Also, as described below,
The photo-curing layered bodies may not necessarily be heat-bonded to each other, so that heat-bonding properties are not always required.

The roller member has a cylindrical shape or a cylindrical shape, and is made of a material which can adhere the photocurable resin to the outer peripheral surface thereof and easily peels off the photocurable layered body. For example, metal, synthetic resin, or ceramic. , Rubber, etc.

In order to adhere the photocurable resin to the outer peripheral surface of the roller member in a layered manner with a predetermined thickness, a mass of the photocurable resin in a viscous state is placed on a flat coating table, and a predetermined space is provided between the roller and the coating table. When the roller member rolls in the opened state, the photo-curable resin is sandwiched between the roller member and the coating table, and is layered with a predetermined thickness to adhere to the outer peripheral surface of the roller member. The gap between the roller member and the coating table is set according to the required thickness of the photocurable layered body.

Further, on the application table, the photocurable resin may be spread with a spatula or knife to a certain thickness to form a photocurable layered body, and then the photocurable layered body may be wound around a roller member. The photo-curable resin may be attached directly to the outer peripheral surface and evened with a spatula or knife so that the photo-curable resin is sandwiched in the gap between the roller member and another roller. You may make it adhere to the roller member side.

The thickness of the photocurable layered body formed by adhering to the outer peripheral surface of the roller member can be carried out to the same extent as the thickness range of the photocurable plate-shaped body in the invention according to claim 1, but in this invention, Since it is attached to the outer peripheral surface of the roller member and handled, it can be carried out even if it is thinner than the photocurable plate-shaped body of claim 1.

The light irradiation base has a flat surface on which the photocurable layered body is placed, and a light irradiation mechanism for irradiating the photocurable layered body with light is provided above the light irradiation base. Has been.

In order to transfer the photocurable layered body attached to the roller member to the light irradiation base, the roller member is rolled on the upper surface of the light irradiation base, and the outer peripheral photocurable layered body is moved to the light irradiation base. It may be pressed against the table side and attached. The photo-curable layered body transferred to the light irradiation base becomes flat along the flat surface of the light irradiation base.

The flat photocurable layered body is irradiated with light to form a photocurable layer. As the light irradiation or photo-curing means, similar to the invention described in claim 1, light irradiation or photo-curing means for ordinary photo-curable resin such as moving irradiation of a light beam or collective exposure using a mask is used. Applicable.

By repeating the above steps, the photocurable layered bodies are stacked on the light irradiation base.

As a means for adhering the upper and lower photo-curable layered bodies or the photo-cured layers, as in the case of the invention described in claim 1, by heating the uncured photo-curable layered body with an infrared lamp or the like, A method by heat bonding, such as bonding with a cured photo-curable layered body below, can be employed. By incorporating a heater inside the roller member, the photo-curable layered body attached to the roller member can be efficiently heated.

When the photocurable layer itself has a certain degree of self-adhesiveness even at room temperature by using a relatively flexible photocurable layer, the photocurable layer adhered to the outer peripheral surface of the roller member In some cases, the photocurable layered bodies are bonded to each other only by pressing the body onto the cured photocurable layered body of the light irradiation base with a roller member and pressing the body. Therefore, in the case of the present invention, heat bonding is not essential as a bonding means for the photocurable layered body.

In the above invention, in order to transfer the photocurable layered body from the roller member to the light irradiation base side, the height of rolling the roller member to which the photocurable layered body adheres is determined by the surface of the light irradiation base. Alternatively, it must be aligned with the surface position of the photocurable layered body stacked on it. As the number of photo-curable layered bodies stacked on the light irradiation base increases, the surface position of the photo-curable layered body increases, so either increase the rolling height of the roller member stepwise or use light irradiation. It is preferable to adjust the rolling height of the roller member so that the rolling height of the roller member and the surface height of the photocurable layered body on the light irradiation base coincide with each other by gradually lowering the entire base.

In the method of the present invention, the photocurable layered body is formed on the outer peripheral surface of the roller member in such a state that the photocurable resin is sandwiched between the surface of the coating table and the roller member and spread out. The body may have anisotropy in properties such as strength in the direction along the circumference of the roller member and the direction along the central axis. In this case, when the roller member is rolled on the light irradiation base to transfer the photocurable layered body, the rolling direction of the roller member is changed for each photocurable layered body to be stacked. By doing so, the stacked photocurable layered bodies as a whole have no anisotropy and have excellent properties such as strength.

[Action]

According to the invention of claim 1, since the solid photocurable plate is used as the photocurable resin for forming the photocurable layer, the photocurable resin is harder than the liquid photocurable resin. Faster and less shrinkage during curing. In addition, since the photocurable plate-like bodies have the heat-adhesive property, the photocurable plate-like bodies can be directly heat-bonded to each other, and there is no need to use an adhesive unlike the conventional method.

According to the second aspect of the present invention, similarly to the first aspect of the invention, by using the solid photocurable layered body, the curing is faster and the curing shrinkage is less than that of the liquid photocurable resin. . Moreover, the photo-curable layered body made of a photo-curable resin formed into a layer with a predetermined thickness on the outer peripheral surface of the roller member is adapted to be transferred to the light irradiation base, which makes it difficult to handle by itself. A thin photocurable layered body or a flexible photocurable layered body can be used.

If it is a flexible photocurable layered body, the photocurable layered body adhered to the roller member may be pressed against the photocurable layered body on the light irradiation base by rolling the roller member at the same time as the transfer. The photocurable layered bodies can be adhered to each other.

〔Example〕

Next, the present invention will be described below with reference to the drawings illustrating an embodiment.

FIG. 1 schematically shows the case of using a photo-curable plate according to the order of steps.

As shown in FIG. 1 (a), one photocurable plate 90
And a light beam 3 such as a laser beam through the lens 30
And the light beam 3 is moved in a pattern in the planar direction to form the photo-cured layer 91 having a predetermined pattern.

As shown in FIG. 1B, after the uncured photocurable plate 90 to be cured in the next step is placed on the photocurable plate 90 on which the photocurable layer 91 is formed, An infrared lamp (not shown) is irradiated from above to heat from the uncured photocurable plate 90 side. The uncured photocurable plate 90 is melted and softened by heating and is adhesively laminated on the lower photocurable plate 90.

As described above, after the cured photo-curable plate 90 and the uncured photo-curable plate 90 are adhesively laminated, as shown in FIG. 1 (c), the uncured surface side is uncured. Photocurable plate
90 is irradiated with light to form a photocurable layer 91. This light irradiation step is performed in the same manner as described with reference to FIG.

By repeating the steps of FIGS. 1 (a) to (c),
The photo-curable plate-shaped bodies 90 on which the photo-curable layer 91 is formed are adhesively laminated one after another, and as shown in FIG. 1 (d), a plurality of photo-curable layers 91 are bonded by heat adhesion and stacked. A molded product 9 having a three-dimensional shape is manufactured. Since the uncured resin material that has not become the photo-curable layer 91 remains on the outer periphery of the molded product 9, if the uncured resin material is washed off with a solvent or the like, the target molded product 9 can be obtained. To be As a solvent for removing the uncured material, a solvent that does not attack or adversely affect the photocurable layer 91 is preferable. However, since no adhesive is used in the above method, it is not necessary to select the solvent in consideration of the material of the adhesive.

Next, FIG. 2 and subsequent figures show an embodiment in which a roller member is used.

FIG. 2 schematically shows the whole process and the equipment used.

A roller member 40 is rotatably and horizontally movable above a coating table 60 having a flat upper surface. A resin supply mechanism 50 is provided above the moving path of the roller member 40.
The photocurable resin material 94 is supplied onto the coating table 60 from the resin supply mechanism 50. A resin recovery tank is located below the tip of the coating table 60.
61 is provided to collect excess resin material that falls from the coating table 60. A light irradiation base 70 is provided on the side of the coating base 60. The light irradiation base 70 is configured such that the photocurable layered body 95 can be stacked and placed on a flat surface, and a motor, a cylinder mechanism, or the like can be provided via an actuating member 71 connected to one end. A light irradiation base 70 is vertically moved by a drive mechanism (not shown). Above the light irradiation base 70, a light irradiation mechanism including a condenser lens 30 and the like is provided in order to irradiate the photocurable layered body 95 with the light beam 3 to form the photocurable layer 91. . Therefore, the molded product 9 having a three-dimensional shape is mounted on the light irradiation base 70.
Will be formed.

FIG. 3 shows the manufacturing process of the molded product 9 using the above apparatus in the order of processes.

First, as shown in FIG. 3A, the photocurable resin material 94 is supplied from the resin supply mechanism 50 onto the coating table 60. The photocurable resin material 94 is not in a liquid state but in a relatively solid viscous and flexible solid state.

As shown in FIG. 3B, when the roller member 40 is moved in the horizontal direction while being rotated, the roller member 40 and the coating table 60 are moved.
The photo-curable resin material 94 is sandwiched between the roller member 40 and
Adhere to the outer peripheral surface of the layer. At this time, the photo-curable resin material 94 is made to have a stronger adhesive force to the outer peripheral surface of the roller member 40 than to the surface of the coating table 60. The thickness of the photocurable resin material 94 attached to the outer peripheral surface of the roller member 40 is
And the spacing of the coating table 60.

As shown in FIG. 3C, if the roller member 40 rotates and horizontally moves, that is, rolls, and the layered photocurable resin material 94 is adhered to the entire outer peripheral surface of the roller member 40 with a constant thickness. A photocurable layered body 95 is formed. Resin supply mechanism 50
Of the resin material 94 supplied to the coating table 60 from the extra resin material 94 that has not become the photocurable layered body 95,
The resin is dropped from the tip of to the resin recovery tank 61 and recovered.

As shown in FIG. 3D, the roller member 40 rolls on the light irradiation base 70, and the photocurable layered body 95 attached to the outer peripheral surface of the roller member 40 is irradiated with the light. It is transferred to the base 70. The photo-curable layered body 95 has a stronger adhesive force to the surface of the light irradiation base 70 than to the outer peripheral surface of the roller member 40. The light irradiation base 70 is arranged such that the upper surface thereof is flush with the upper surface of the coating table 60, and
Only when 40 rolls in the horizontal direction, the photocurable layered body 95 moves onto the light irradiation base 70.

As shown in FIG. 3E, the photocurable layer 95 on the light irradiation base 70 is irradiated with the light beam 3 to form the photocurable layer 91. The roller member 40 returns to the original position of the coating table 60.

By repeating the steps of FIGS. 3 (a) to 3 (e) as described above, the photocurable layered body is formed on the light irradiation base 70.
95 are stacked. As the number of photocurable layered bodies 95 stacked on the light irradiation base 70 increases, the light irradiation base 70 is lowered stepwise, and the photocurable layered body 95 at the uppermost end of the light irradiation base 70 is The surface should always be placed flush with the surface of the applicator table 60.

To bond the stacked photocurable layered bodies 95 or the photocurable layers 91 to each other, the uncured photocurable layered body 95 is formed on the photocurable layered body 95 of the light irradiation base 70 from the roller member 40. At the stage of transferring, the material may be irradiated with an infrared lamp from above and heated, and heat-bonded to the lower photocurable layered body 95. It is also possible to incorporate a heater inside the roller member 40 to heat the photocurable layered body 95 on the roller member 40. Further, from the roller member 40 to the light irradiation base 70
When transferring the photocurable layered body 95 to the
95 is the roller member 40, and the photocurable layered body of the light irradiation base 70
In some cases, it may be sufficient to apply pressure and pressure to the upper surface.

Through the above steps, as shown in FIG. 2, a molded article 9 having a three-dimensional shape in which a plurality of photo-curing layers 91 are laminated and integrated is formed on the light irradiation base 70. Will be. The uncured resin material remaining around the molded product 9 is removed with a solvent or the like as in the above-described embodiment.

Next, FIG. 4 shows an embodiment partially different from the embodiment shown in FIGS. 2 and 3 and will be described below. Note that description of items that are common to the above-described embodiment will be omitted.

The resin supply mechanism 50 is attached via a horizontal arm 51 to a support structure 62 integrated with the coating table 60. The support structure 62 is provided so as to be vertically movable. On the other hand, the light irradiation base 70 is fixed without the operating member 71. Therefore, in order to transfer the photocurable layered body 95 from the roller member 40 to the light irradiation base 70, the surface height of the photocurable layered body 95 of the fixed light irradiation base 70 is adjusted to the coating table. The support structure 62 is moved up and down so as to match the surface height of 60.

According to this embodiment, since the light irradiation base 70 does not have to be moved, the irradiation position of light with respect to the photocurable layered body 95 can be accurately set, and a highly accurate photocurable layer 91 can be formed. There is little deviation in the shapes of the photocurable layers 91 stacked on top of each other, and the molded product 9 having excellent shape accuracy can be obtained. In the case of this embodiment, the focus position of the light beam 3 is also moved upward in response to the upward movement of the support structure 62 so that the light is always focused on the uppermost photocurable layered body 95. The hardened layer 91 is prepared in advance.

Next, the embodiment shown in FIGS. 5 and 6 will be described. Also in this embodiment, as in the embodiment of FIG. 4, the resin supply mechanism 50 and the coating base 60 are attached to the support structure 62 and moved up and down. A screw shaft 63 is threadedly fitted through the support structure 62 in the vertical direction, and if the screw shaft 63 is vertically rotated, it can be driven to rotate by a motor or the like.
The support structure 62 screw-fitted to the 63 moves up and down relatively. Both ends of the roller member 40 are slidably supported by a pair of support rails 41, 41 projecting horizontally from the support structure 62, and the roller member 40 extends along the support rail 41 for light irradiation base 70. Move horizontally above. Light irradiation base 70
Is mounted on the turntable 73 and is rotatably mounted in a horizontal plane.

The function of the turntable 73 will be described.

When the photo-curable resin material 94 is attached to the outer peripheral surface of the roller member 40 to form the photo-curable layered body 95, a force for pushing or expanding the photo-curable resin material 94 in the rotation direction of the roller member 40 is applied. Since it acts, the photocurable layered body 95 formed
May cause anisotropy in properties such as strength in the direction along the central axis of the roller member 40 and the circumferential direction. for that reason,
The molded product 9 including a plurality of photocurable layers 91 formed by stacking the photocurable layered bodies 95 also has a problem that anisotropy occurs in performance such as strength.

Therefore, every time the photocurable layered body 95 is transferred from the roller member 40 to the light irradiation base 70, the light irradiation base 70 on the turntable 73 is rotated to change its direction. As shown, the photocurable layered bodies 95 are vertically turned and stacked (in the figure, the direction of the arrow indicates the direction along the circumferential direction of the roller member 40). As a result, the anisotropy disappears in the entire molded article 9 including the plurality of photo-cured layers 91,
It is possible to manufacture products having excellent performance such as strength.

Note that, without using the turntable 73 as described above, the coating table 60 and the roller member 40, etc. are installed respectively in the vertical and horizontal directions of the light irradiation base 70, and the light irradiation base is alternately arranged from each direction. The photocurable layered body 95 may be provided on the 70. Further, the roller member 40 to which the photo-curable layered body 95 is attached may be configured to be rotatable and rollable in both the vertical and horizontal directions of the light irradiation base.

Next, the embodiment shown in FIGS. 7 and 8 shows the case where the roller member 40 has a heater built therein.

As shown in FIG. 7, the resin supply mechanism 50 is fixed to a vertical wall 64 via a horizontal arm 51, and a support rail 41 is provided so as to project from the vertical wall 64 in the horizontal direction. The roller member 40 is supported by 41. FIG. 8 shows a sectional structure of the support rail 41. The pair of left and right support rails 41 are provided with a bearing groove 45 inside the facing surfaces.
Both end shaft portions 44, 44 of the roller member 40 are supported by the roller member 40 so that both end shaft portions 44, 44 can move in the horizontal direction while rotating in the bearing groove 45. Inside the roller member 40, a cylindrical heater 80 is mounted so that the outer peripheral surface of the roller member 40 can be heated. A power source taking ring 43 connected to the heater 80 is attached to both end shaft portions 44 of the roller member 40, and the power source taking ring 43 is mounted on the power source rail 42 provided on the inner bottom surface of the bearing groove 45 of the support rail 41. The heating roller 80 can be supplied with power from an external power supply (not shown) connected to the power supply rail 42 via the power supply rail 42 and the power supply intake ring 43.

As described above, when the heater 80 is built in the roller member 40, the photocurable layered body 95 attached to the roller member 40 is heated while being moved to the light irradiation base 70 to be used for light irradiation. At the same time as being transferred to the base 70, the photocurable layered body below
Can be heat-bonded to 95, improving work efficiency.

When the roller member 40 has a built-in drive motor for rotation and movement, the power supply ring 43 is used.
Power can also be supplied from.

〔The invention's effect〕

Among the three-dimensional shape forming method according to the present invention described above, according to the invention of claim 1, as in the conventional case,
Since a solid photocurable plate material is laminated without using a liquid photocurable resin material, a high molecular weight photocurable resin material can be used. As a result, the curing time is shortened, the curing shrinkage amount is reduced, and a three-dimensional shape with high dimensional accuracy can be formed. Like liquid photo-curable resin material, there is no need to wait for the surface of the supplied resin liquid to settle down and flatten before irradiating light, so there is no waste of time and time, and work time can be greatly reduced. Productivity can be improved.

In addition, since the photocurable plate having heat adhesiveness is used, it is not necessary to use an adhesive, and the photocurable plate itself can be directly laminated. Therefore,
Since there is no need to apply an adhesive and different materials such as an adhesive do not intervene, the materials of the formed molded articles are all the same, and the quality performance such as light transmittance is uniform. When dissolving and removing the uncured portion of the photocurable plate, it is not necessary to consider the influence on the adhesive, and it is easy to select a treatment agent for removing the uncured portion. Unlike adhesives made of different materials, the laminated portion is not peeled off or the strength of the portion is not reduced. Since an adhesive whose thickness is difficult to control is not used and a solid photocurable plate having stable dimensional accuracy is directly bonded, the dimensional accuracy of the entire molded product is greatly improved.

According to the invention of claim 2, in that the solid photocurable layered body is used and the photocurable layered body is directly adhered without using an adhesive, the photocurable layered body of claim 1 is used. The same effect as the effect can be exhibited.

In addition, the photo-curing layered body is formed by adhering to the outer peripheral surface of the roller member in a layered manner, and the formed photo-curing layered body is handled as the roller member as it is, and a light irradiation base for irradiating light. Since the roller members are moved to and stacked on top of each other, the photo-curable layered body can be produced and then handled very easily and reliably, and the flexible photo-curable layered body is deformed during handling. It is also possible to prevent scratches, scratches, and shifts and wrinkles when stacking the photocurable layered bodies.

In particular, even a photocurable layered body that is relatively flexible or has a small thickness and is difficult to carry by itself can be used without any problems if it is handled by being attached to a roller member. As a result, a molded product can be manufactured by laminating thin photocurable layered bodies, that is, photocurable layers, and the step difference of each photocurable layer generated in the outer shape of the formed three-dimensional shape can be made small and inconspicuous. It is possible to improve the shape accuracy and the appearance by smoothing the outer shape of the molded product. In addition, if the photo-curable layered body is relatively flexible, it becomes possible to bond the photo-curable layered bodies to each other by simply pressing them.
The heat bonding work can be omitted, and even when heat bonding is performed, the heating temperature can be lowered or the heating time can be shortened to simplify the heating bonding work.

[Brief description of drawings]

FIG. 1 is a schematic process diagram showing an embodiment of the present invention, FIG. 2 is an overall structural diagram showing a using device of another embodiment, and FIGS. 3 (a) to 3 (e) show how to use the above device. FIG. 4 is a schematic process diagram showing step order, FIG. 4 is an overall structural diagram showing another embodiment, and FIG.
FIG. 6 is a perspective view of the whole structure showing another embodiment, FIG. 6 is a front view, FIG. 7 is a whole structure view showing another embodiment, and FIG. The figure is a schematic configuration diagram of a conventional example. 3 ... Light beam, 30 ... Condensing lens, 40 ... Roller member, 50 ... Resin supply mechanism, 60 ... Coating base, 70 ... Light irradiation base, 9 ... Molded product, 90 ... Photocurable plate, 91 ……
Photocurable layer, 94 ... Photocurable resin material, 95 ... Photocurable layered body

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shinobu Ikeno 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Masanobu Ogasawara, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works, Ltd. (72) Inventor Yoshiyuki Uchino 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Shungo Ozawa, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd.

Claims (2)

[Claims] 1. A method for forming a photocurable layer by irradiating a photocurable resin with light, and stacking a plurality of the photocurable layers to form a desired three-dimensional shape, comprising a photocurable resin and heating. A method for forming a three-dimensional shape, which comprises irradiating light on a photo-curable plate having adhesiveness to form a photo-curable layer and heating and bonding the photo-curable plate to be stacked. 2. A method of forming a photocurable layer by irradiating light on the photocurable resin and stacking a plurality of the photocurable layers to form a desired three-dimensional shape. After adhering the photocurable layered body to the flat outer surface of the roller member with a predetermined thickness and transferring it from the outer peripheral surface of the roller member to a flat light irradiation base, light is applied to the flat light curable layered body. A method for forming a three-dimensional shape, which comprises irradiating to form a photocurable layer and stacking the photocurable layer on a light irradiation base.