EP0168837A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Flash welding machine
Assignee: Mitsubishi Electric Corp
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Filing: 1985-07-19
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Granted: —
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Expires: 2005-07-19
Abstract
Abstract A flash welding machine for butt welding the trailing edge of a preceding metal strip (18) to the leading edge of a following metal strip (19) in a rolling mill or the like. A preceding carriage assembly (21) and a following carriage assembly (23) are provided, movably mounted on a common set of rails (1). Each carriage assembly is provided with electrodes (10, 16) capable of clamping respective ones of the preceding strip (18) and the following strip (19) when the two strips are in abutment with one another. Welding cylinders (24) are provided for selectively joining the two carriage assemblies (21, 23) when the two strips (18, 19) are in abutment and the welding operation is to be performed, and then releasing the carriage assemblies (21, 23) from one another.
Inventors
- 👤 Akimichi C/O Mitsubishi Denki K.K. Takeda
- 👤 Akiyoshi C/O Mitsubishi Denki K.K. Uomori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:27
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/24; B21C47/247; B21B; B21B15/00; B21B15/0085; B23; B23K; B23K11/00; B23K11/04; B23K11/08; B23K11/087; B23K37/00; B23K37/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A flash welding machine for butt welding the trailing edge of a preceding metal strip (18) to the leading edge of a following metal strip (19), comprising: a preceding carriage assembly (21) for detecting the trailing edge of said preceding strip (18) and clamping said preceding strip (18) with electrodes (10) capable of being energized; a following carriage assembly (23) for clamping said following strip (19) with electrodes (16) energized when the leading edge of said following strip (19) is abutted against the trailing edge of said preceding strip (18), said preceding and following carriage assemblies each being arranged movably on the same set of rails (1); and welding cylinder arrangements (24,25,26) for said preceding and following carriage assemblies for selectively joining and separating said preceding and following carriage assemblies (21,23).
Claim 2
Dependent Claim
131 words
A flash welding machine for butt welding the trailing edge of a preceding metal strip (18) to the leading edge of a following metal strip (19), comprising: a preceding carriage assembly (21) for detecting the trailing edge of said preceding strip (18) and clamping said preceding strip (18) with electrodes (10) capable of being energized; a following carriage assembly (23) for clamping said following strip (19) with electrodes (16) energized when the leading edge of said following strip (19) is abutted against the trailing edge of said preceding strip (18), said preceding and following carriage assemblies each being arranged movably on the same set of rails (1); and welding cylinder arrangements (24,25,26) for said preceding and following carriage assemblies for selectively joining and separating said preceding and following carriage assemblies (21,23).
Claim 3
Dependent Claim
54 words
A flash welding machine according to claim 1, wherein said preceding carriage assembly (21) and said following carriage assembly (23) each comprises a clamp device (9,15) for clamping the respective electrodes (10,16) to said preceding strip (18) and said following strip (19), respectively, when said preceding strip and said following strip are in abutment.
Claim 4
Dependent Claim
34 words
A flash welding machine according to claim 1 or 2 wherein said welding cylinder arrangements have cylinder shafts (25) carrying couplers (26) for selectively joining and separating said preceding and following carriage assemblies (21,23).
Claim 5
Dependent Claim
144 words
, 4. A flash welding machine according to any one of claims 1 to 3 further comprising first and second detectors (27,28) for detecting, respectively, a trailing edge of said preceding strip (18) and a leading edge of said following strip (19), an output of said first detector (27) instructing the start of movement of said preceding and following carriage assemblies (21,23) in a direction of movement of said preceding strip (18) at a predetermined velocity and operating an uncoiler (29) to feed said following strip (19) at such a velocity as to make said following strip (19) follow the movement of said preceding strip (18), and an output of said second detector (28) instructing clamping operations to clamp said preceding strip (18), and said following strip (19) and operation of said welding cylinder arrangements to join said preceding and following carriage assemblies (21,23).
Claim 6
Dependent Claim
16 words
A rolling mill comprising a flash welding machine according to any one of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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