# US 7,744,801 B2 · 3D modeling device and 3D modeling method for supplying material with high precision

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- Number: US 7,744,801 B2
- Document ID: US7744801B2
- Status: Granted
- Kind: B2
- Application number: 11/085,980
- Filed: 2005-03-22
- Published: 2005-11-10
- Granted: 2010-06-29
- Earliest claimed: 2004-05-07
- Assignees: Roland Dg Corporation
- Inventors: Koji Owada
- Web page: https://patentgrep.com/patent/US7744801B2

## CPC

- B29C 64/40: Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
- B29C 64/106: using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C 64/112: using individual droplets, e.g. from jetting heads
- B29K 2705/00: Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

## Abstract

A 3D modeling device performs repeatedly a step of cutting a subsidiary material layer formed of a subsidiary material and cutting a modeling material layer formed of a modeling material. The 3D modeling device comprises at least one of a subsidiary material supplying device which discharges the subsidiary material drop by drop from an outlet positioned apart from a region in which the subsidiary material is to be applied at a predetermined distance, and a modeling material supplying device which discharges the modeling material drop by drop from an output positioned apart from a region in which the modeling material is to be applied at a predetermined distance. Since the material can be applied with high precision, a high-quality 3D molded object is provided.

## Claims

### Claim 1

A 3D modeling method comprising:
a step of repeatedly cutting a subsidiary material layer formed of a subsidiary material and cutting a modeling material layer formed of a light-curing resin as a modeling material;
a step of irradiating the light-curing resin with light; and
a step of removing the subsidiary material to form a 3D object formed of the modeling material,
wherein at least one of the subsidiary material constituting the subsidiary material layer and the modeling material constituting the modeling material layer is supplied in the form of dots,
wherein the light is irradiated at an elevation beneath a position where the light-curing resin is discharged during depositing thereof,
wherein the light is irradiated from a light guide member, wherein the light-curing resin is discharged from an outlet of a dispenser, and wherein the outlet of the dispenser is provided within a hole in the light guide member,
wherein the light guide member includes a plurality of optical fibers having tip ends positioned around and lower than the outlet of the dispenser, and
wherein said tip ends are provided in a ring around the outlet of the dispenser.

### Claim 2

A 3D modeling method comprising a step of repeatedly cutting a subsidiary material layer formed of a subsidiary material and cutting a modeling material layer formed of a modeling material and a step of removing the subsidiary material to form a 3D object formed of the modeling material, said method further comprising:
supplying the subsidiary material in the form of dots constituting the subsidiary material layer, wherein the subsidiary material is deposited drop by drop and is discharged to drop onto a predetermined position;
supplying a light-curing resin in the form of dots as the modeling material constituting the modeling material layer, wherein said supplying of the light-curing resin in the form of dots comprises depositing the light-curing resin in the form of dots at spaced intervals from one another and then depositing the light-curing resin in the form of dots within spaces between the spaced intervals; and
irradiating the supplied dot-shaped light-curing resin with light,
wherein the light is irradiated at an elevation beneath a position where the light-curing resin is discharged, wherein the light is irradiated from a light guide member, wherein the light-curing resin is discharged from an outlet of a dispenser, and wherein the outlet of the dispenser is provided within a hole in the light guide member.

### Claim 3 (depends on 2)

The 3D modeling method according to claim 2, wherein the light guide member includes a plurality of optical fibers having tip ends positioned around and lower than the outlet of the dispenser.

### Claim 4

A 3D modeling method comprising a step of repeatedly cutting a subsidiary material layer formed of a subsidiary material and cutting a modeling material layer formed of a modeling material and a step of removing the subsidiary material to form a 3D object formed of the modeling material, said method further comprising:
supplying the subsidiary material in the form of dots constituting the subsidiary material layer;
supplying a light-curing resin in the form of dots as the modeling material constituting the modeling material layer; and
irradiating the supplied dot-shaped light-curing resin with light,
wherein the light is irradiated at an elevation beneath a position where the light-curing resin is discharged,
wherein the light is irradiated from a light guide member, wherein the light-curing resin is discharged from an outlet of a dispenser, and wherein the outlet of the dispenser is provided within a hole in the light guide member,
wherein the light guide member includes a plurality of optical fibers having tip ends positioned around and lower than the outlet of the dispenser, and
wherein said tip ends are provided in a ring around the outlet of the dispenser.

### Claim 5 (depends on 3)

The 3D modeling method according to claim 3, wherein said tip ends are provided to irradiate light to converge at a spot beneath the hole of the light guide member.

### Claim 6 (depends on 5)

The 3D modeling method according to claim 5, wherein the spot of converged light is axially aligned with the outlet of the dispenser.

### Claim 7

A 3D modeling method comprising:
forming a subsidiary material layer by depositing a subsidiary material and cutting the subsidiary material, wherein the subsidiary material is deposited drop by drop;
forming a model material layer on the subsidiary material by depositing a light-curing resin as a modeling material, wherein said depositing of the light-curing resin includes depositing drops of the light-curing resin at spaced intervals from one another and then depositing drops of the light-curing resin within spaces between the spaced intervals;
irradiating the light-curing resin with light; and
removing the subsidiary material to form a 3D object formed of the modeling material,
wherein at least one of the subsidiary material constituting the subsidiary material layer and the modeling material constituting the modeling material layer is deposited as drops, and
wherein the light is irradiated at an elevation beneath a position where the light-curing resin is discharged during depositing thereof,
wherein the light is irradiated from a light guide member, wherein the light-curing resin is discharged from an outlet of a dispenser, and wherein the outlet of the dispenser is provided within a hole in the light guide member.

### Claim 8 (depends on 7)

The 3D modeling method according to claim 7, wherein the light guide member includes a plurality of optical fibers having tip ends positioned around and lower than the outlet of the dispenser.

### Claim 9

A 3D modeling method comprising:
forming a subsidiary material layer by depositing a subsidiary material and cutting the subsidiary material;
forming a model material layer on the subsidiary material by depositing a light-curing resin as a modeling material;
irradiating the light-curing resin with light; and
removing the subsidiary material to form a 3D object formed of the modeling material,
wherein at least one of the subsidiary material constituting the subsidiary material layer and the modeling material constituting the modeling material layer is deposited as drops,
wherein the light is irradiated at an elevation beneath a position where the light-curing resin is discharged during depositing thereof, wherein the light is irradiated from a light guide member, wherein the light-curing resin is discharged from an outlet of a dispenser, and wherein the outlet of the dispenser is provided within a hole in the light guide member,
wherein the light guide member includes a plurality of optical fibers having tip ends positioned around and lower than the outlet of the dispenser, and
wherein said tip ends are provided in a ring around the outlet of the dispenser.

### Claim 10 (depends on 8)

The 3D modeling method according to claim 8, wherein said tip ends are provided to irradiate light to converge at a spot beneath the hole of the light guide member.

### Claim 11 (depends on 10)

The 3D modeling method according to claim 10, wherein the spot of converged light is axially aligned with the outlet of the dispenser.