Three-dimensional shaped object manufacturing device

Patent metadata

Field	Value
Publication number	US-11518107-B2
Application number	US-202016918640-A
Country	US
Kind code	B2
Filing date	Jul 1, 2020
Priority date	Jul 4, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

In a three-dimensional shaped object manufacturing device, when a unit is moved in a forward direction, powder is supplied from a first supply portion, a powder layer is formed by a first layer forming portion, a liquid is discharged to a shaping region from a head, and a second layer forming portion is moved in a direction separating from a shaping table before the second layer forming portion faces the shaping region, and when the unit is moved in a backward direction, the powder is supplied from a second supply portion, the powder layer is formed by the second layer forming portion, the liquid is discharged to the shaping region P from the head, and a first layer forming portion is moved in a direction separating from the shaping table before the first layer forming portion faces the shaping region.

First claim

What is claimed is:

1. A three-dimensional shaped object manufacturing device, comprising:
a shaping table;
a supply unit configured to reciprocate with respect to the shaping table and including a first supply portion and a second supply portion configured to supply powder, a first roller and a second roller configured to form a powder layer on the shaping table using the powder, and at least one head configured to discharge a liquid containing a binder to a shaping region of the three-dimensional shaped object on the powder layer;
a layer forming and moving portion configured to move the first roller and the second roller in an approaching or separating direction that is a direction approaching or separating from the shaping table, wherein the layer forming and moving portion comprises a first rotation shaft attached to the first roller, the first rotation shaft attached with a first rod-shaped swing portion configured to swing with respect to a first swing shaft,

and
a control unit configured to control the layer forming and moving portion, the unit, and the shaping table, wherein
the unit includes the first supply portion, the first layer forming portion, the head, the second layer forming portion, and the second supply portion in an order from a head side in a forward direction in a reciprocating direction of the unit, and
the control unit is configured to perform control to,
when moving the unit in the forward direction when shaping the three-dimensional shaped object, supply the powder from the first supply portion, form the powder layer on the shaping table using the powder by the first layer forming portion, discharge the liquid to the shaping region from the head, and move the second layer forming portion in a direction separating from the shaping table before the second layer forming portion faces the shaping region, and
when moving the unit in a backward direction in the reciprocating direction when shaping the three-dimensional shaped object, supply the powder from the second supply portion, form the powder layer on the shaping table using the powder by the second layer forming portion, discharge the liquid to the shaping region from the head, and move the first layer forming portion in the direction separating from the shaping table before the first layer forming portion faces the shaping region.

2. The three-dimensional shaped object manufacturing device according to claim 1 , wherein
the binder is a resin cured by applying energy, and
the unit includes at least one energy applying portion for curing the binder.

3. The three-dimensional shaped object manufacturing device according to claim 2 , wherein
the head includes a first head and a second head,
the first head is disposed between the first roller and the second roller in the reciprocating direction,
a distance between the first head and the first roller in the reciprocating direction is shorter than a distance between the first head and the second roller,
the second head is disposed between the first roller and the second roller in the reciprocating direction,
a distance between the second head and the second roller in the reciprocating direction is shorter than a distance between the second head and the first roller, and
the energy applying portion is provided between the first head and the second head in the reciprocating direction.

4. The three-dimensional shaped object manufacturing device according to claim 2 , wherein
the energy applying portion includes a first energy applying portion and a second energy applying portion.

5. The three-dimensional shaped object manufacturing device according to claim 1 , wherein
the first rollers having rotation shafts in a direction intersecting the approaching or separating direction and the reciprocating direction, and
the control unit configured to,
when moving the unit in the forward direction when shaping the three-dimensional shaped object, rotates the first roller such that a shaping table side of the first layer forming portion faces the head side in the forward direction, and
when moving the unit in the backward direction when shaping the three-dimensional shaped object, rotates the second roller such that a shaping table side of the second layer forming portion faces a head side in the backward direction.

6. The three-dimensional shaped object manufacturing device according to claim 1 , wherein
an interval between the first roller and the head in the reciprocating direction and an interval between the second roller and the head in the reciprocating direction are adjustable.

Assignees

• Seiko Epson Corp

Inventors

• Okamoto Eiji
• Tsunoya Akihiko

Classifications

• B29C64/393 Primary

  for controlling or regulating additive manufacturing processes · CPC title

• B33Y50/02

  for controlling or regulating additive manufacturing processes · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/236

  for motion in a direction within the plane of a layer · CPC title

• Y02P10/25

  Process efficiency · CPC title