JPH0582530U - Stereolithography device - Google Patents

Abstract

(57) [Abstract] [Purpose] An optical modeling apparatus that cures a photocurable resin in a resin tank to cure the photocurable resin to form a three-dimensional object 5 having a predetermined shape. Thus, it is possible to provide a stereolithography apparatus that does not require time and effort for peeling a three-dimensional object and has no risk of damaging the three-dimensional object during peeling. [Structure] A peeling plate 2 is horizontally installed on a lifting table 1 in a resin tank, and the peeling plate 2 is formed by combining a pair of comb-shaped plate halves 21 and 22 with each other to form a flat plate. Is composed of. And the plate half
The three-dimensional molded item 5 is molded on the surface of the combination portion of 21 and 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stereolithography apparatus for molding a three-dimensional molded article by using a photocurable resin that is cured by irradiation with a light beam such as ultraviolet rays.

[0002]

[Prior Art]

 In the process of developing various products such as electrical equipment, a three-dimensional model of the product is created and the design and mechanism are checked, but the three-dimensional model can be quickly changed according to the shortening of the life cycle of the product in recent years. It has become necessary to fabricate.

Therefore, a stereolithography apparatus has been developed which irradiates a photocurable resin in a resin tank with a light beam to cure the photocurable resin, thereby molding a three-dimensional molded article (magazine “molding technology”). 1989, Vol. 4, No. 7, JP-A-62-35966).

As shown in FIG. 4, the stereolithography apparatus arranges the lifting table (1) driven by the lifting control device (11) in the photo-curing resin (61) in the resin tank (6), and A projector (7) that should emit a light beam toward the surface of the cured resin (61) is provided, and the projector (7) is controlled by the movement control device (71) to move in a horizontal plane in the XY directions. Be done.

Ultraviolet laser light from the UV laser device (9) is supplied to the projector (7) through the optical filter (91). The operations of the lifting control device (11), movement control device (71) and optical filter (91) are controlled by a control computer (8).

In the above apparatus, the contour data is created by slicing the shape data of the three-dimensional object designed by the CAD system, and the contour data is supplied to the control computer (8) to move the lifting table (1 ) Descends in the resin tank (6) at a constant pitch (about 0.1 to 0.3 mm), and the ultraviolet laser beam from the projector (7) causes the photocurable resin (61) on the lifting table (1). Are scanned in the X-Y directions according to the contour line data.

As a result, the cured resin layer is sequentially deposited on the elevating table (1) in a shape corresponding to the contour line data, and finally a three-dimensional object (5) having a predetermined shape is formed.

[0008]

[Problems to be solved by the device]

 Conventionally, when removing a molded three-dimensional object (5) from the lifting table (1), a sharp blade is inserted into the contact surface between the vertical modeling object (5) and the lifting table (1) to remove the three-dimensional object. (5) was peeled from the lifting table (1). However, the conventional method using a blade not only takes time and labor, but also the three-dimensional object may be damaged by the blade.

An object of the present invention is to provide a stereolithography apparatus that does not take much time for peeling and does not damage a three-dimensional object during peeling.

[0010]

[Means for solving the problem]

 In the stereolithography apparatus according to the present invention, a peeling plate (2) which is connected to an elevating mechanism and moves up and down is horizontally installed in a resin tank (6). The peeling plate (2) is formed by combining a pair of comb-shaped plate halves (21) and (22) with each other to form one flat plate.

[0011]

[Action]

 When the light curing resin (61) in the resin tank (6) is scanned with a light beam, the peeling plate (2) has a pair of plate halves (21) (22) with their surfaces aligned. It is installed horizontally in the resin tank (6) and is connected to the elevating mechanism. After the solid modeling object (5) is molded on the surface of the combination part of the pair of plate halves (21) (22) by irradiation of the light beam, the three-dimensional modeling object (5) is lifted together with the peeling plate (2). Remove from the structure.

After that, by moving one plate half body (21) of the peeling plate (2) up and down relatively with respect to the other plate half body (22), the three-dimensional model (5) can be moved to both plates. Peel from the surfaces of the halves (21) (22). At this time, since both plate halves (21) (22) each have a comb shape, when the surface of one plate half is peeled from the back surface of the three-dimensional object (5), the three-dimensional object (5) Since the force acting on the back surface of the three-dimensional object is not concentrated and is distributed over the entire surface, there is no risk of damaging the three-dimensional object (5).

[0013]

[Effect of the device]

 According to the stereolithography apparatus according to the present invention, the solid modeling is performed by a simple operation of vertically moving one plate half body (21) of the peeling plate (2) with respect to the other plate half body (22). It can be easily removed from the peeling plate (2) without damaging the object (5).

[0014]

【Example】

 Hereinafter, an example in which the present invention is applied to the stereolithography apparatus shown in FIG. 4 will be described in detail with reference to the drawings.

The peeling plate (2) according to the present invention is constructed by combining a pair of first and second plate halves (21, 22) as shown in FIG. The first plate half body (21) is provided with comb-shaped openings to form a plurality of projecting pieces (26) having a rectangular cross section and extending in parallel in the same direction. 27) (27) (27) (27) is opened, and two support shafts (28) (28) are projected toward the comb-shaped opening.

On the other hand, the second plate half body (22) has a comb shape corresponding to the opening of the first plate half body (21), and has a plurality of projecting pieces (25) having a rectangular cross section extending in parallel in the same direction. The protrusions (25) are closely assembled in the same plane as the protrusions (26) of the first plate half (21) (see FIG. 1).

The second plate half body (22) has four protrusions (25) (25) at both ends, and four four holes to be communicated with the respective positioning holes (27) of the first plate half body (21). The positioning holes (23), (23), (23) and (23) are recessed, and two pins (24) and (24) are protruded outward.

The first plate half body (21) and the second plate half body (22) are connected by two L-shaped operation levers (3) and (3). That is, the pin hole (32) opened in the center of the operation lever (3) is fitted to the support shaft (28) of the first plate half body (21), and the long hole (31) opened at the tip of the lever is , Fit into the pins (24) of the second plate half (22). Therefore, by operating the operation lever (3), the second plate half body (22) can be moved up and down with respect to the first plate half body (21).

Further, four positioning pins for fixing the plate half bodies (21) and the second plate half body (22) to each other in a state of being assembled on the same plane. (4) (4) (4) (4) penetrates the positioning hole (27) of the first plate half body (21) and is further fitted into the positioning hole (23) of the second plate half body (22). To do.

The peeling plate (2) configured by combining the two plate halves (21) and (22) as described above is installed on the lifting table (1) of the stereolithography apparatus as shown in FIG. In this case, both plate halves (21) and (22) are integrated by the positioning pin (4), and the surface of the peeling plate (2) forms one horizontal plane without steps.

The three-dimensional object (5) molded by operating the optical modeling apparatus is removed from the lifting table (1) together with the peeling plate (2) and then the four positioning pins (4) are pulled out. It is peeled from the peeling plate (2) by operating both operation levers (3) and (3).

That is, as shown in FIG. 3 (a), from the state where the three-dimensional object (5) is in close contact with the surface of the peeling plate (2), the second plate half body (22) is moved as shown in FIG. 3 (b). By raising, the surface of the first plate half (21) is separated from the back surface of the three-dimensional object (5), and then the second plate half (22) is lowered as shown in FIG. The surface of the second plate half body (22) is peeled off from the back surface of the three-dimensional object (5).

As a result, the three-dimensional object (5) is completely separated from the peeling plate (2). At this time, since the contact surface between the first plate half body (21) or the second plate half body (22) and the three-dimensional object (5) is divided into a number of elongated strip-shaped regions, the three-dimensional object (5 ) Is not likely to be damaged.

According to the above-described optical modeling apparatus, it is possible to easily remove the three-dimensional object from the peeling plate without damaging the three-dimensional object by a simple lever operation.

The above description of the embodiments is for explaining the present invention and should not be construed as limiting the invention described in the scope of the utility model registration request or reducing the scope. Further, the configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the scope of claims for utility model registration.

For example, in the above embodiment, the three-dimensional object is peeled off by manual operation of the lever, but it is also possible to automate it by using a reciprocating device such as a solenoid.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a stereolithography apparatus according to the present invention.

FIG. 2 is an exploded perspective view of a peeling plate.

FIG. 3 is a process diagram of separating a three-dimensional object from a separation plate.

FIG. 4 is a block diagram showing a configuration of a conventional stereolithography apparatus.

[Explanation of symbols]

 (1) Lifting table (2) Peeling plate (21) First plate half (22) Second plate half (3) Operating lever (5) Three-dimensional object

Claims (1)

[Scope of utility model registration request] 1. Light for curing a photocurable resin (61) by scanning a photocurable resin (61) in a resin tank (6) with a light beam to mold a three-dimensional molded article of a predetermined shape. In the modeling apparatus, a peeling plate (2) that is linked to an elevating mechanism and moves up and down is horizontally installed in a resin tank (6), and the peeling plate (2) is a pair of plate half bodies ( An optical modeling apparatus in which 21) and (22) are combined with each other to form one flat plate, and a three-dimensional model (5) is molded on the surface of the combination portion of the plate halves (21) and (22).