Automated gate cutting system

Patent metadata

Field	Value
Publication number	US-11192177-B2
Application number	US-202016902553-A
Country	US
Kind code	B2
Filing date	Jun 16, 2020
Priority date	Apr 19, 2017
Publication date	Dec 7, 2021
Grant date	Dec 7, 2021

Abstract

A system for separating a part from a monolithic tree includes a camera positioned facing the tree and configured to identify a cut mark on a gate of the tree, the tree including a runner, the part connected to the runner with the gate, each of the runner, the gate, and the part including a cast material; and a robotic arm configured to manipulate at least one of an orientation and a position of the tree.

First claim

That which is claimed is:

1. A system for separating a part from a monolithic tree, the system comprising:
a camera positioned facing the tree and configured to identify a cut mark on a gate of the tree, the tree comprising a runner, the part connected to the runner with the gate, each of the runner, the gate, and the part comprising a cast material; and
a robotic arm configured to manipulate at least one of an orientation and a position of the tree.

2. The system of claim 1 , further comprising a cutter.

3. The system of claim 2 , wherein the cutter is configured to remain stationary during removal of the part from the tree.

4. The system of claim 2 , wherein the cutter comprises a cutting implement comprising one of a rotating cutting wheel defining a cutting axis about which the rotating cutting wheel is configured to rotate, a blade, one of jaws and shears, a laser head, a water jet head, and a plasma cutting head.

5. The system of claim 1 , wherein the robotic arm comprises a gripper configured to grip and hold the tree.

6. The system of claim 1 , further comprising a conveyor configured to support and transport the tree through a cleaning station.

7. The system of claim 6 , wherein the robotic arm is positioned between the cleaning station and a second station.

8. The system of claim 7 , wherein the second station is one of a second cleaning station and a cutting station.

9. The system of claim 1 , further comprising a scrap station configured to transport the remaining portion of the tree after removal of the part from the remaining portion of the tree.

10. A monolithic tree comprising:
a sprue;
a runner formed integrally with the sprue;
a plurality of parts, each of the plurality of parts formed integrally with the runner; and
a plurality of gates, each gate comprising a cut mark and connecting a one of the plurality of parts to the runner, the cut mark of each gate positioned between the part and the runner.

11. The tree of claim 10 , further comprising a silicon-brass alloy.

12. The tree of claim 10 , wherein a corresponding portion of the cut mark of each of the plurality of gates is aligned along a single cutting reference.

13. The tree of claim 12 , wherein the cutting reference does not intersect any of the plurality of parts.

14. A method for separating a part from a monolithic tree, the method comprising:
identifying with a camera a cut mark defined in the tree;
determining an orientation and a position of the cut mark;
determining an orientation and a position of the tree from the orientation and the position of the cut mark;
aligning through use of a robotic arm the orientation and the position of the tree with a cutting line of a cutter; and
cutting the part from the tree with the cutter.

15. The method of claim 14 , further comprising transporting the tree from a first position to a second position.

16. The method of claim 15 , wherein the second position is a cutting station.

17. The method of claim 14 , further comprising gripping a portion of the tree with the robotic arm, wherein cutting the part from the tree with the cutter comprises moving the robotic arm with respect to the cutter.

18. The method of claim 14 , further comprising cleaning the tree with one of a water jet and abrasive media.

19. The method of claim 14 , wherein a gripper of the robotic arm grips a sprue of the tree, the gripper being angled with respect to a sprue axis defined by the sprue.

20. The method of claim 14 , wherein cutting the part from the tree comprises automatically cutting the part from the tree based on information transmitted from the camera to the cutter.

Assignees

• Mueller Int Llc

Inventors

• Harbour Theodore Chad
• Hipp Timothy P
• Klink Kelby Wayne
• Johnson Donald

Classifications

• B22D31/00

  Cutting-off surplus material, e.g. gates; {Cleaning and working on castings (B22D17/2076 takes precedence)} · CPC title

• B22D31/002

  Cleaning, working on castings · CPC title

• B22D17/2076 Primary

  Cutting-off equipment for sprues or ingates (for plastics B29C45/38) · CPC title

• B23K26/032

  using optical means · CPC title

• B23K26/352

  for surface treatment · CPC title