Casting apparatus and casting method

Patent metadata

Field	Value
Publication number	US-10773300-B2
Application number	US-201815877645-A
Country	US
Kind code	B2
Filing date	Jan 23, 2018
Priority date	Jan 31, 2017
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A casting apparatus includes: a mold including a first mold segment and a second mold segment; and a transfer device that is configured to transfer a core to the first mold segment and place the core in the first mold segment, and to receive and transfer a casting. The transfer device includes a support part, a robot arm, a core grasping mechanism being provided on the support part, and a casting receiving part being provided on the support part. The transfer device is configured such that the robot arm moves the core grasping mechanism so as to place the core in the first mold segment, and moves the casting receiving part so as to receive the casting by the casting receiving part.

First claim

What is claimed is:

1. A casting apparatus comprising:
a mold including a first mold segment and a second mold segment; and
a transfer device that is configured to transfer a core to the first mold segment and place the core in the first mold segment, and to receive a casting that has been cast with the mold from the mold and transfer the casting, wherein
the transfer device includes
a support part including a first side and a second side that is an opposite side of the support part from the first side,
a robot arm,
a core grasping mechanism being provided on the first side, and
a casting receiving part being provided on the second side,

the casting is held in the second mold segment when the mold is opened after casting,
the transfer device being configured such that, in a state where the mold is open, the robot arm moves the core grasping mechanism grasping the core so as to place the core in the first mold segment, and moves the casting receiving part so as to receive the casting held in the second mold segment, by the casting receiving part.

2. The casting apparatus according to claim 1 , wherein
the first mold segment is a lower mold segment and the second mold segment is an upper mold segment.

3. The casting apparatus according to claim 2 , wherein
the transfer device is configured such that, in a state where the mold is open, the robot arm moves the core grasping mechanism to a vertically upper side of the lower mold segment and moves the casting receiving part to a vertically lower side of the upper mold segment.

4. The casting apparatus according to claim 1 , wherein
the casting receiving part includes a column member including a first end and a second end, and a plurality of plate members,
the first end is in contact with the second side, and the second end is located at a position away from the second side in a direction from the first side toward the second side, and
the plurality of plate members each include one end in contact with the second end and another end, and the plurality of plate members are parallel to a plane of the support part, and the other ends of the plurality of plate members extend away from the second end in the same direction so as to form a fork shape.

5. The casting apparatus according to claim 4 , wherein
the transfer device includes a sand receiving member between the support part and the casting receiving part in a direction perpendicular to a plane of the second side, and
the sand receiving member is configured to receive sand falling from the core that is contained in the casting placed on the casting receiving part.

6. The casting apparatus according to claim 1 , wherein
the casting receiving part includes a hole corresponding to a projection that is provided on a surface of the casting coming in contact with the first mold segment.

7. The casting apparatus according to claim 1 , wherein
the core grasping mechanism includes a picker that is in contact with the first side and extends in a direction from the second side toward the first side,
the picker includes a grasping part configured to be expandable and contractible with a fluid, and
the core grasping mechanism is configured to grasp the core by expanding the grasping part.

8. The casting apparatus according to claim 1 , further comprising a holding furnace that is configured to hold molten metal, wherein
the holding furnace is hermetically closed and communicates with an inside of the mold, and
the holding furnace is configured such that the molten metal is supplied to the inside of the mold as a pressure inside the holding furnace is raised higher than an atmospheric pressure.

9. The casting apparatus according to claim 1 , wherein
the second mold segment includes a cooling mechanism that is configured to cool a molten metal packed inside the mold.

10. A casting method comprising:
separating a first mold segment of a mold and a second mold segment of the mold from each other after casting;
after separating the first mold segment and the second mold segment from each other, moving a support part including a core grasping mechanism grasping a core, by a robot arm so as to place the core in the first mold segment, the support part including a first side and a second side that is the opposite side of the support part from the first side, the core grasping mechanism being provided on the first side; and
moving a casting receiving part provided on the second side, by the robot arm so as to receive a casting held in the second mold segment, by the casting receiving part.

11. The casting method according to claim 10 , wherein
the first mold segment is a lower mold segment and the second mold segment is an upper mold segment.

12. The casting method according to claim 11 , wherein
when placing the core in the lower mold segment, the robot arm moves the core grasping mechanism to a vertically upper side of the lower mold segment, and
when receiving the casting by the casting receiving part, the robot arm moves the casting receiving part to a vertically lower side of the upper mold segment.

13. The casting method according to claim 10 , wherein
the casting is received by the casting receiving part after the core is placed in the first mold segment.

14. A casting apparatus comprising:
a mold including a first mold segment and a second mold segment; and
a transfer device that is configured to transfer a core to the first mold segment and place the core in the first mold segment, and to receive a casting that has been cast with the mold from the mold and transfer the casting, the transfer device including:
a support part including a first side and a second side that is an opposite side of the support part from the first side,
a robot arm,
a core grasping mechanism being provided on the first side of the support part, the core grasping mechanism including a plurality of pickers and a plurality of graspers formed by an elastic member expandable and contractible with a fluid, and
a casting receiving part being provided on the second side of the support part, the casting receiving part including a plurality of plate members connected to a column member, wherein:

the casting is held in the second mold segment when the mold is opened after casting,
the transfer device being configured such that, in a state where the mold is open, the robot arm: (a) moves the core grasping mechanism grasping the core so as to place the core in the first mold segment, and (b) moves the casting receiving part so as to receive the casting held in the second mold segment by the casting receiving part.

15. The casting apparatus according to claim 14 , wherein the first mold segment is a lower mold segment and the second mold segment is an upper mold segment.

16. The casting apparatus according to claim 14 , wherein the casting receiving part includes a hole corresponding to a projection that is provided on a surface of the casting coming in contact with the first mold segment.

17. The casting apparatus according to claim 14 , wherein the second mold segment includes a cooling mechanism that is configured to cool a molten metal packed inside the mold.

18. A casting method comprising:
separating a first mold segment of a mold and a second mold segment of the mold from each other after casting;
after separating the first mold segment and the second mold segment from each other, moving a support part including a core grasping mechanism grasping a core, by a robot arm so as to place the core in the first mold segment; and
moving a casting rec

Assignees

• Toyota Motor Co Ltd

Inventors

• Tomita Takashi
• Nakahashi Tadashi
• Kikuchi Makoto

Classifications

• B22D29/00

  Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots {(B22D13/10, B22D11/124, B22D17/00 take precedence)} · CPC title

• B22D18/04 Primary

  Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould · CPC title

• B22D17/2084

  Manipulating or transferring devices for evacuating cast pieces · CPC title

• B22C9/108 Primary

  Installation of cores · CPC title

• B22C23/00

  Tools; Devices not mentioned before for moulding · CPC title