High access consumables for a plasma arc cutting system

• US 10,194,516 B2
• Filed: 03/09/2015
• Issued: 01/29/2019
• Est. Priority Date: 09/13/2006
• Status: Active Grant

• Current Assignee: Hypertherm Incorporated
• Original Assignee: Hypertherm Incorporated
• Inventors: Schulze, Christopher, Shipulski, E. Michael, Darrow, Clifford Glenn, Higgens, Martin
• Primary Examiner(s): Paschall, Mark
• Application Number:
  US14/642,593
• Publication Number:
  US 20150181686A1
• Time in Patent Office: 1,422 Days
• Field of Search: 2191215, 21912149, 21912151, 21912139, 219 75, 21912154, 21912157, 21912148
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: B23K 35/00 Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
• CPC Class Codes: B23K 35/0216 Rods, electrodes, wires
• CPC Class Codes: H05H 1/34 Details, e.g. electrodes, nozzles
• CPC Class Codes: H05H 1/3421 Transferred arc or pilot arc mode
• CPC Class Codes: H05H 1/3442 Cathodes with inserted tip
• CPC Class Codes: H05H 1/3457 Nozzle protection devices
• CPC Class Codes: H05H 1/3468 Vortex generators
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A torch extender for a plasma arc cutting system is provided. The plasma torch extender includes an elongated substantially dielectric body that defines a first end and a second end and includes a flexible section that is poseable across a plurality of orientations. The torch extender also includes a first connector, at the first end of the elongated substantially dielectric body, which mates with a consumable set, and a second connector, at the second end of the elongated substantially dielectric body, which mates with a torch mount. The torch extender further includes a consumable detection medium that communicates the presence of the consumable set. The consumable detection medium is disposed within the elongated substantially dielectric body and extends between the first end and the second end of the elongated substantially dielectric body.

Claims

1. A plasma torch extender for a plasma arc cutting system, the plasma torch extender comprising:

an elongated body including a semi-rigid, positionable flexible section having an axis extending between a first end and a second end, the flexible section having a length of at least six inches and sufficient stiffness and ductility to enable manipulation at any point along its axis to form a three-dimensional bent axis, the flexible section adapted to be poseable across a plurality of orientations including at least a first movement spanning at least 90 degrees, between the first end and the second end, such that when manipulated the three-dimensional bent axis remains fixed;

a first connector at the first end of the elongated body directly connectible to a consumable set; and

a second connector at the second end of the elongated body directly connectible to a torch mount.

2. The plasma torch extender of claim 1 wherein the plurality of orientations include at least one movement to at least one of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, or 90 degree angles.

3. The plasma torch extender of claim 1 wherein the flexible section of the elongated body is arranged such that it can be manipulated to position the first end of the elongated body at a compound angle with respect to the second end of the elongated body.

4. The plasma torch extender of claim 1 wherein the flexible section of the elongated body is configured such that it can be manipulated to position the first end of the elongated body with respect to the second end of the elongated body across a range of angles, spanning from 0 degree to 360 degrees.

5. The plasma torch extender of claim 1 wherein the second end of the elongated body is configured to mate with a mechanized torch body or a handle of the plasma arc torch.

6. The plasma torch extender of claim 1 wherein the elongated body includes at least one of a gas channel for providing a plasma gas to a plasma arc torch or a power conductor for providing a cutting current to the plasma arc torch.

7. The plasma torch extender of claim 1 wherein the second end of the elongated body is further arranged to connect to at least one of a camera or a borescope disposed proximate to the elongated substantially flexible body.

8. The plasma torch extender of claim 1 wherein the elongated body is substantially dielectric.

9. The plasma torch extender of claim 1 further comprising a consumable detection medium adapted to communicate the presence of the consumable set, the consumable detection medium disposed within the elongated body and extending between the first end and the second end of the elongated body.

10. The plasma torch extender of claim 1 wherein the compound angle is in three dimensions.

11. The plasma torch extender of claim 1 wherein the compound angle permits positioning about one or more obstructions.

12. The plasma torch extender of claim 9 wherein the consumable detection medium is adapted to detect the presence of the consumable set as a function of translating at least one of a mechanical, pneumatic or electric signal received from the first end of the elongated body.

13. The plasma torch extender of claim 9 wherein the consumable detection medium for communicating the presence of the consumable set includes a consumable sensor that detects the presence of the consumable set.

14. The plasma torch extender of claim 13 wherein the consumable sensor includes at least one of a mechanical, pneumatic or electric sensor.

15. The plasma torch extender of claim 13 further including a transmission medium that relocates a functionality of the consumable sensor from the first end of the elongated body to a torch sensor located at the second end of the elongated body.

16. The plasma torch extender of claim 1 wherein the flexible section has a length of about five feet.

17. The plasma torch extender of claim 1 wherein the plurality of orientations further includes a second movement spanning at least 180 degrees.

18. A plasma torch extender for a plasma arc cutting system, the plasma torch extender comprising:

an elongated body including a first end and a second end, the first end configured to mate with a consumable set and the second end configured to mate with a torch handle, the elongated body having a semi-rigid, positionable flexible section having a length of at least six inches and including a set of serially interconnected conduits, each conduit being moveable relative to an adjacent conduit in three dimensions and capable of collectively forming a three-dimensional bent axis such that the flexible section is poseable across a plurality of orientations including at least a first movement spanning at least 90 degrees, between the first end and the second end, such that when manipulated the three-dimensional bent axis remains fixed.

19. The plasma torch extender of claim 18 wherein each conduit is a generally longitudinal cylindrical body.

20. The plasma torch extender of claim 18 wherein each conduit, having a longitudinal axis, is arranged to be moveable, about a connection point, with respect to the longitudinal axis of the adjacent conduit, to a plurality of predetermined orientations.

21. The plasma torch extender of claim 20 wherein at least one end of each conduit includes a motion limiter that limits movement of the conduit relative to the connection point with its adjacent conduit.

22. The plasma torch extender of claim 21 wherein the motion limiter is arranged to allow movement of the conduit, relative to the connection point, to a predetermined range of movements.

23. The plasma torch extender of claim 18 wherein the set of serially connected conduits are positioned substantially internal to the elongated body.

24. The plasma torch extender of claim 18 wherein the second end of the elongated body is further arranged to connect to at least one of a camera or a borescope disposed proximate to the elongated substantially flexible body.

25. The plasma torch extender of claim 18 wherein the flexible section is poseable to form a compound angle.

26. The plasma torch extender of claim 18 wherein the set of serially connected conduits further includes at least one of a gas channel for providing a plasma gas to the plasma arc torch or a power conductor for providing a cutting current to the plasma arc torch that passes through the set of serially connected conduits.

27. The plasma torch extender of claim 18 wherein the first end of the elongated body remains stationary with respect to the second end of the elongated body after positioning by a user.

28. The plasma torch extender of claim 18 wherein the elongated body is substantially dielectric.

29. The plasm torch extender of claim 18 further comprising a transmission medium for communicating information indicative of the presence of the consumable set, the transmission medium disposed relative to the elongated body and providing a transmission path between the first end and the second end of the elongated body.

30. The plasma torch extender of claim 29 wherein the transmission medium for communicating information indicative of the presence of the consumable set includes a consumable sensor that detects the presence of the consumable set.

31. The plasma torch extender of claim 30 wherein the consumable sensor includes at least one of a mechanical, pneumatic or electric sensor.

32. The plasma torch extender of claim 30 wherein the transmission medium is arranged to relocate a functionality of the consumable sensor from the first end of the elongated body to a torch sensor located at the second end of the elongated body.

33. The plasma torch extender of claim 18 wherein the flexible section has a length of about five feet.

34. The plasma torch extender of claim 18 wherein the plurality of orientations further includes a second movement spanning at least 180 degrees.

35. A plasma arc torch cutting system comprising:

a torch mount;

a torch extension member having a first end and a second end, the torch extension member having a semi-rigid, positionable flexible section having an axis extending between the first end to the second end and having a length of at least six inches and sufficient stiffness and ductility to enable manipulation of the torch extender at a compound angle, each angle positionable at an orientation of up to 90 degrees by repositioning at any point along its axis to form a three-dimensional bent axis, the flexible section configured to be poseable across a range of angles including at least one range achieving a compound angle of at least 90 degrees, such that when manipulated the three-dimensional bent axis remains fixed;

a first connector at the first end directly connectible to a torch tip that includes an electrode and a nozzle; and

a second connector at the second end directly connectible to the torch mount.

36. The plasma arc torch cutting system of claim 35 wherein the flexible section of the torch extension member is arranged to be fully poseable to form a compound angle.

37. The plasma torch cutting system of claim 35 wherein the extension member includes at least one of a gas channel for providing a plasma gas to a plasma arc torch or a power conductor for providing a cutting current to the plasma arc torch.

38. The plasma arc cutting torch system of claim 35 further comprising a transmission medium for communicating information indicative of the presence of the torch tip, the transmission medium disposed within the torch extension member and extending between the first end and the second end.

39. The plasma arc torch cutting system of claim 38 wherein the transmission medium for communicating information indicative of the presence of the torch tip is coupled with a torch tip sensor that detects the presence of the torch tip.

40. The plasma arc torch cutting system of claim 39 wherein the torch tip sensor includes at least one of a mechanical, pneumatic or electric sensor.

41. The plasma torch cutting system of claim 39 wherein the transmission medium for communicating information indicative of the presence of the torch tip further is arranged to relocate a functionality of the torch tip sensor from the first end of the torch extension member to a torch sensor located at the second end of the torch extension member.

42. The plasma torch cutting system of claim 39 wherein the second end of the torch extension member is connected to a mechanized torch body or a handle of the plasma arc torch.

43. The plasma arc torch cutting system of claim 35 wherein the flexible section has a length of about five feet.

44. The plasma arc torch cutting system of claim 35 wherein the compound angle is at least 180 degrees.

45. A flexible unitary torch having an extension, the extension comprising:

an elongated body including a semi-rigid, positionable flexible section having an axis extending between a first end and a second end, the flexible section having a length of at least six inches and sufficient stiffness and ductility to enable manipulation to a compound angle by repositioning at any point along its axis to form a three-dimensional bent axis, the flexible section adapted to be poseable across a plurality of orientations including at least a first movement spanning at least 90 degrees, between the first end and the second end, such that when manipulated the three-dimensional bent axis remains fixed; and

a first connector at the first end of the elongated body directly connectible to a consumable set.

46. The flexible unitary torch of claim 45 wherein the flexible section has a length suitable to enable bending greater than 90 degrees.

47. The flexible unitary torch of claim 45 wherein the plurality of orientations further includes a second movement spanning at least 180 degrees.