Panasonic Intellectual Property Management Co., Ltd.

Mikio Mori

Satoshi Abe

Shinya Watanabe

Kenichi Tanaka

Isao Fuwa

Yoshiyuki Uchinono

Masataka Takenami

To manufacture a sprue-bush which is capable of suitably cooling a melt raw resin in a raw resin-flow path as a whole, there is provided a method for manufacturing a sprue-bush, wherein a shaped part is located on a base part to manufacture the sprue-bush, the base part comprising a raw resin-flow path and a cooling medium-flow path, wherein, in the shaped part, a downstream raw resin-flow path portion is located and a downstream cooling medium-flow path portion is also located, the downstream raw resin-flow path portion corresponding to a downstream side region of a raw resin-flow path of the sprue-bush, the downstream cooling medium-flow path portion being positioned around the downstream raw resin-flow path portion and corresponding to a downstream side region of a cooling medium-flow path of the sprue-bush, and wherein the downstream cooling medium-flow path portion is located to surround the downstream raw resin-flow path portion.

Sprue-bush and method for manufacturing sprue-bush

In order to provide a sprue-bush which is capable of suitably cooling a melt raw resin in a raw resin-flow path as a whole, there is provided a sprue-bush, comprising a raw resin-flow path and a cooling medium-flow path located around the raw resin-flow path, wherein a width dimension of the raw-resin flow path gradually becomes larger toward a downstream side-end surface of the sprue-bush, and wherein the downstream side-end surface of the sprue-bush is a heat transfer surface.

Sprue-bush

There is provided a manufacturing method of a three-dimensional shaped object, the method being capable of reducing a warp deformation of the three-dimensional shaped object. The manufacturing method according to an embodiment of the present invention produces a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming on a base plate, wherein the forming of at least one prior solidified layer is performed under a higher temperature condition than that for the forming of a subsequent solidified layer, the at least one prior solidified layer being formed prior to the subsequent solidified layer.

Method for manufacturing three-dimensional shaped object

There is provided a manufacturing method of a three-dimensional shaped object, the method being capable of reducing a warp deformation of the three-dimensional shaped object. The manufacturing method according to an embodiment of the present invention produces a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming by light beam irradiation, wherein as a platform for the three-dimensional shaped object, a plate laminate body comprising a dummy solidified layer and a base plate for the shaped object is used, and the dummy solidified layer is formed on one of principal surfaces of the base plate, whereas the three-dimensional shaped object is manufactured on the other of the principal surfaces of the base plate.

There is provided a method for manufacturing a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming by an irradiation with a light beam in order to provide a selective laser sintering method capable of reducing a warp of the three-dimensional shaped object, the warp being due to a stress around an upper surface of the three-dimensional shaped object. Especially, in the present invention, a part of a region for the formation of the solidified layer is not irradiated with the light beam to form a non-irradiated portion, thereby providing at least one slit-groove at an upper surface of the three-dimensional shaped object, the slit-groove being for reducing a stress of the three-dimensional shaped object.

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Osaka, Japan

Mikio Mori