# US 9,751,263 B2 · Injection molding to finish parts printed with a three-dimensional object printer

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- Number: US 9,751,263 B2
- Document ID: US9751263B2
- Status: Granted
- Kind: B2
- Application number: 14/690,780
- Filed: 2015-04-20
- Published: 2016-10-20
- Granted: 2017-09-05
- Earliest claimed: 2015-04-20
- Assignees: Xerox Corporation
- Applicants: Xerox Corporation
- Inventors: Christopher D. Atwood; Mark A. Adiletta
- Web page: https://patentgrep.com/patent/US9751263B2

## CPC

- B29C 69/02: of moulding techniques only
- B29C 45/14336: {Coating a portion of the article, e.g. the edge of the article (B29C45/14573 and B29C45/14598 take precedence)}
- B29C 64/112: using individual droplets, e.g. from jetting heads
- B29C 70/78: Moulding material on one side only of the preformed part
- B29C 45/14008: {Inserting articles into the mould (B29C45/14827 takes precedence)}
- B29K 2995/0021: Multi-coloured
- B33Y 40/00: Auxiliary operations or equipment, e.g. for material handling
- 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
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

## Abstract

A method for forming a three-dimensional object uses a three-dimensional object printer to form a printed part and an injection molding system is used to form a molded part that adjoins the printed part and completes the three-dimensional object formation. The method includes operating an ejector head of a three-dimensional object printer to eject drops of material onto a platen to form the printed part, operating an actuator to move the printed part from the platen to a cavity of an injection mold of an injection molding system, and operating injectors of the injection molding system to inject material into the cavity of the injection mold to form the molded part that adjoins the printed part to form the three-dimensional object.

## Claims

### Claim 1

A system for manufacturing a three-dimensional object comprising:
a three-dimensional object printer having a platen and an ejector head, which is configured to eject drops of material onto the platen to form a printed part on the platen;
an injection molding system having an injection mold with a cavity configured to shape a three-dimensional object and injectors configured to inject material into the cavity, the injection mold also including a recess adjacent to the cavity configured to receive the platen and place the printed part within the cavity;
an actuator configured to move the printed part from the three-dimensional object printer to the cavity of the injection mold; and
a controller operably connected to the three-dimensional object printer, the injection mold, and the actuator, the controller being configured to:
operate the ejector head to eject drops of material onto a platen to form the printed part on the platen;
operate the actuator to move the platen and the printed part on the platen into the recess of the injection mold to enable the printed part to be in the cavity of an injection mold; and
operate the injectors to inject material into the cavity of the injection mold to form a molded part in the cavity, the molded part being adjoined with the printed part to form the three-dimensional object.

### Claim 2 (depends on 1)

The system of claim 1, the controller being further configured to:
operate the ejector head to eject drops of a support material onto the platen to form a support layer; and
operate the ejector head to eject drops of a build material onto the support layer to form the printed part.

### Claim 3 (depends on 2)

The system of claim 2, the controller being further configured to:
operate the ejector head to eject the drops of build material to form the printed part with at least one contoured surface that abuts the support material.

### Claim 4 (depends on 1)

The system of claim 1, the controller being further configured to:
operate the ejector head to eject drops of a first build material and drops of a second build material onto the platen to form the printed part, the first build material being a different color than the second build material, the first build material of the printed part and the second building material of the printed part being arranged within the printed part to form an image on a surface of the printed part.

### Claim 5

A system for manufacturing a three-dimensional object comprising:
a three-dimensional object printer having a platen and an ejector head, which is configured to eject drops of material onto the platen to form a printed part on the platen;
an injection molding system having an injection mold with a cavity configured to shape a three-dimensional object and injectors configured to inject material into the cavity;
an actuator configured to move the printed part from the three-dimensional object printer to the cavity of the injection mold; and
a controller operably connected to the three-dimensional object printer, the injection mold, and the actuator, the controller being configured to:
operate the ejector head to eject drops of material onto a platen to form the printed part on the platen;
operate the actuator to move the printed part on the platen to the cavity of an injection mold; and
operate the injectors to inject material into the cavity of the injection mold to form a molded part in the cavity, the molded part being adjoined with the printed part to form the three-dimensional object; and,
operate the actuator to remove the platen and the formed three-dimensional object on the platen from injection mold after the injectors have been operated to form the molded part.

### Claim 6 (depends on 5)

The system of claim 5, the controller being further configured to:
operate the ejector head to eject drops of a support material onto the platen to form a support layer; and
operate the ejector head to eject drops of a build material onto the support layer to form the printed part.

### Claim 7 (depends on 6)

The system of claim 6, the controller being further configured to:
operate the ejector head to eject the drops of build material to form the printed part with at least one contoured surface that abuts the support material.

### Claim 8 (depends on 5)

The system of claim 5, the controller being further configured to:
operate the ejector head to eject drops of a first build material and drops of a second build material onto the platen to form the printed part, the first build material being a different color than the second build material, the first build material of the printed part and the second building material of the printed part being arranged within the printed part to form an image on a surface of the printed part.