Burner head of an electric arc welding or cutting burner with contact nozzle supported in positive fit

• US 6,657,162 B1
• Filed: 11/13/2001
• Issued: 12/02/2003
• Est. Priority Date: 05/31/1999
• Status: Expired due to Term

• Current Assignee: Alexander Binzel Schweisstechnik GmbH & Company KG (IBG Industrie-Beteiligungs GmbH & Co. KG)
• Original Assignee: Alexander Binzel Schweisstechnik GmbH & Company KG (IBG Industrie-Beteiligungs GmbH & Co. KG)
• Inventors: Jung, Michael, Metzger, Hubert
• Primary Examiner(s): Shaw, Clifford C.
• Application Number:
  US09/926,488
• Time in Patent Office: 749 Days
• Field of Search: 219/137.61, 219/137.31, 219/137.42, 219/137.44, 219/137.63
• US Class Current: 219/137.61
• CPC Class Codes: B23K 9/122 Devices for guiding electrodes, e.g. guide tubes
• CPC Class Codes: B23K 9/285 Cooled electrode holders

Abstract

The invention relates to a burner head (9) of an electric arc welding or cutting head, with preferably a melting wire electrode, having a contact nozzle (1) and a spring chuck (2) for releasably holding the contact nozzle (1) on the burner head (9). Both of the contact nozzle and the spring chuck (2) have corresponding means to bring about positive locking between the contact nozzle (1) and the spring chuck in the contact nozzle (1) that is supported on the burner head (9).

Claims

1. A burner head (9) of a electric arc welding burner or cutting burner preferably with a melting electrode, such as a wire electrode or the like, comprising

a contact nozzle (1), and

a burner head (9) having a spring chuck (2) for releasably gripping the contact nozzle (1) in the burner head (9),

the contact nozzle (1) and the spring chuck (2) each having respective interlocking members with abutment surfaces transverse to longitudinal forces and which when the contact nozzle (1) is gripped in the burner head (9) form a positive fit between the contact nozzle (1) and the spring chuck (2).

2. The burner head of claim 1, wherein the interlocking members include a tongue and groove.

3. The burner head of claim 1, wherein the interlocking members include an annular collar mating with an annular groove.

4. The burner head of claim 1, wherein

the contact nozzle (1) has a substantially cylindrical rearward shaft (8), which over its circumference has one or more annularly distributed plunge-cut recesses (5) or an encompassing annular groove, and

the spring chuck (2) has a one or more corresponding inner protrusions a corresponding inner collar (4), or a an inward protruding annular rib or the like that is received in the annularly distributed plunge-cut recesses or the encompassing annular groove.

5. The burner head of claim 1, wherein

the spring chuck (2) has a substantially central bore (11), and

the contact nozzle (1) has a shaft (8) which is received and gripped within the central bore of the spring chuck.

6. The burner head of claim 1, further comprising a receptacle (3) having a bored recess (6) with a conical or cone-shaped contour, and wherein the spring chuck (2), in a middle portion (12), has a conical or cone-shaped outer contour (7), which is received by the bored recess (6) of the receptacle (3) of the burner head (9).

7. The burner head of claim 1, further comprising a receptacle (3) having a female thread (15), and wherein the spring chuck (2), on the rearward free end (13), has a male thread (14), which is in engagement with the female thread (15) of the receptacle (3) of the burner head (9).

8. The burner head of claim 1, wherein the contact nozzle (1), has a shaft (8), free portion (16), and an annular shoulder (17) between the shaft and the free portion and, which is braced against the front portion (10) of the spring chuck (2).

9. The burner head of claim 1, wherein the contact nozzle has a shaft (8) making a large-area non-positive connection with the spring chuck (2).