Automated Consumable Exchangers

• US 20200137867A1
• Filed: 10/30/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Active Application

• Current Assignee: Hypertherm Incorporated
• Original Assignee: Hypertherm Incorporated
• Inventors: Mason, Brandon, Streit, Eric
• Application Number:
  US16/668,795
• Publication Number:
  US 20200137867A1
• Time in Patent Office: Days
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: B23K 9/32 Accessories earthing connections H01R
• CPC Class Codes: H05H 1/34 Details, e.g. electrodes, nozzles
• CPC Class Codes: H05H 1/36 Circuit arrangements H05H1/38, H05H1/40 take precedence
• CPC Class Codes: H05H 1/38 Guiding or centering of electrodes

Abstract

A consumable exchanger for a plasma arc material processing system is provided. The consumable exchanger comprises a base portion and a holder shaped to retain at least a portion of a consumable component of a plasma arc torch. The holder is operably connected to the base portion. The consumable exchanger further comprises a driver connected to the holder. The driver is configured to rotate the consumable component relative to at least one of the base portion or the plasma arc torch to perform one of engage the consumable component to the plasma arc torch or disengage the consumable component from the plasma arc torch.

Claims

1. A consumable exchanger for a plasma arc material processing system, the consumable exchanger comprising:

a base portion;

a holder shaped to retain at least a portion of a consumable component of a plasma arc torch, the holder operably connected to the base portion; and

a driver connected to the holder, the driver configured to rotate the consumable component relative to at least one of the base portion or the plasma arc torch to perform one of engage the consumable component to the plasma arc torch or disengage the consumable component from the plasma arc torch.

2. The consumable exchanger of claim 1, wherein the holder is shaped to retain a distal end of the consumable component.

3. The consumable exchanger of claim 1, wherein the base portion is configured to be attached to a material processing table.

4. The consumable exchanger of claim 1, wherein the consumable component is a cartridge that encapsulates two or more individual plasma arc torch consumables.

5. The consumable exchanger of claim 1, wherein the consumable component is air cooled.

6. The consumable exchanger of claim 1, wherein the driver is substantially pneumatic such that rotation by the driver is activated by a gas flow.

7. The consumable exchanger of claim 1, wherein the driver is substantially electrical such that rotation by the driver is powered by electrical energy.

8. The consumable exchanger of claim 1, wherein a rotation of the driver is no more than about 180 degrees to engage or disengage the consumable component.

9. The consumable exchanger of claim 1, further comprising a detector operably connected to the driver to detect a presence of the consumable component in the holder prior to rotation.

10. The consumable exchanger of claim 9, wherein the driver is adapted to rotate in a first direction to engage the consumable component to the torch if the detector detects the consumable component in the holder prior to the rotation, and wherein the driver is adapted to rotate in a second direction opposite of the first direction to disengage the consumable component from the torch if the detector does not detect the consumable component in the holder prior to the rotation.

11. The consumable exchanger of claim 1, further comprising a communication module in electrical communication with a controller of the material processing system, the driver is adapted to rotate in a first direction to engage the consumable component to the torch or in a second direction opposite of the first direction to disengage the consumable component from the torch based on instructions received from the controller via the communication module.

12. The consumable exchanger of claim 11, further comprising a reader configured to read information stored in a radio-frequency identification (RFID) tag coupled to the consumable component, the information comprising a life characteristic of the consumable component.

13. The consumable exchanger of claim 12, wherein the reader is configured to transmit the life characteristic of the consumable component to the controller of the material processing system.

14. The consumable exchanger of claim 13, wherein the reader is coupled to the holder.

15. The consumable exchanger of claim 1, wherein the holder comprises a cup or a gripper with a plurality of claws.

16. The consumable exchanger of claim 1, wherein the holder comprises an interface with at least one keyed feature configured to matingly engage a complementary keyed feature of the consumable component for retaining the consumable component during the engagement or disengagement.

17. A computer-implemented method for automatically installing a consumable to a tip of a plasma arc torch that is operably connected to a plasma cutting system, the method comprising:

receiving, by a computing device, (i) data related to a desired operation and (ii) information related to a plurality of consumables, including a performance characteristic of each consumable, wherein the plurality of consumables are disposed in respective ones of a plurality of consumable exchangers;

selecting, by the computing device, a suitable consumable from the plurality of consumables, the suitable consumable having a performance characteristic compatible with the desired operation;

positioning, by the computing device, a torch for engagement with the suitable consumable; and

actuating, by the computing device, the consumable exchanger corresponding to the suitable consumable to install the suitable consumable onto a tip of the torch.

18. The method of claim 17, wherein each consumable comprises a cartridge encapsulating a plurality of individual consumable components.

19. The method of claim 17, further comprising, actuating, by the computing device, a separate consumable exchanger to remove an unsuitable consumable from the torch prior to actuating the consumable exchanger to install the suitable consumable onto the torch.

20. The method of claim 17, wherein selecting the suitable consumable comprises the computing device determining that the suitable consumable has sufficient remaining life to perform the desired operation based on the performance characteristic of the suitable consumable.

21. The method of claim 17, further comprising rotating, by the consumable exchanger, the suitable consumable onto the tip of the torch to install the suitable consumable.

22. The method of claim 17, wherein the computing device receives the information related to each of the plurality of consumables from a radio-frequency identification (RFID) tag attached to each consumable.

23. The method of claim 22, further comprising:

automatically reading, by at least one RFID reader, the information related to the plurality of consumables from the RFID tags attached to the corresponding ones of the plurality of consumables; and

transmitting, by the at least one RFID reader, the information to the computing device.

24. The method of claim 23, wherein the at least one RFID reader is a handheld reader.

25. The method of claim 23, wherein the at least one RFID reader comprises a plurality of RFID readers coupled to corresponding ones of the plurality of consumable exchangers.

26. The method of claim 17, wherein the computing device is configured to centrally coordinate the automatic installation of the consumable onto the tip of the plasma arc torch without receiving a direction from the plurality of consumable exchanger.

27. A material processing system comprising:

a plurality of consumable exchangers each comprising a holder shaped to retain and install a consumable; and

a computing device in electrical communication with the plurality of consumable exchangers, the computing device comprising;

an input module configured to receive (i) data related to a desired operation and (ii) information related to a plurality of possible consumables, including a performance characteristic of each possible consumable, wherein the plurality of possible consumables are disposed in respective ones of the plurality of consumable exchangers;

a decision module configured to select a suitable consumable from the plurality of possible consumables, the suitable consumable having a performance characteristic compatible with the desired operation;

a torch locator configured to select a torch for engagement with the suitable consumable; and

an actuation module configured to instruct the consumable exchanger corresponding to the suitable consumable to install the suitable consumable onto a tip of the selected torch.

28. The material processing system of claim 27, further comprising a plurality of RFID tags coupled to corresponding ones of the possible consumables, the plurality of RFID tags configured to store the performance characteristics of the respective possible consumables.

29. The material processing system of claim 28, further comprising at least one RFID reader configured to read the performance characteristics from the RFID tags and transmit the performance characteristics to the input module.

30. A method for installing a consumable cartridge onto a tip of a plasma arc torch in a plasma cutting system, the consumable cartridge including at least an electrode and a swirl ring, the method comprising:

loading the consumable cartridge in a holder of a consumable exchanger, wherein the holder is configured to retain at least a portion of the consumable cartridge;

aligning, by a computing device, the tip of the plasma arc torch with the consumable cartridge in the consumable exchanger to achieve an aligned position;

driving, by the computing device, the plasma arc torch downward along a vertical direction toward the consumable cartridge in the aligned position; and

rotating, by the consumable exchanger, the consumable cartridge relative to the plasma arc torch to thread the consumable cartridge onto the tip of the torch.

31. The method of claim 30, further comprising moving, by the consumable exchanger, the consumable cartridge upward along the vertical direction during the rotation to thread the consumable cartridge onto the tip of the torch.

32. The method of claim 30, wherein the driving of the plasma arc torch downward initiates translation of the consumable exchanger in a lateral plane to position the consumable exchanger under the plasma arc torch.

33. The method of claim 30, wherein the consumable exchanger retains the at least a portion of the consumable cartridge via a keyed interface comprising a keyed feature of the consumable exchanger matingly engaging a corresponding keyed feature of the consumable cartridge.

34. The method of claim 33, wherein the consumable exchanger includes an even number of keyed features that are located symmetrically around a circumference of the consumable exchanger.

35. The method of claim 34, further comprising applying, by the consumable exchanger, a torque substantially evenly around a circumference of the consumable cartridge during the rotation to thread the consumable cartridge onto the tip of the plasma arc torch.