GB1276421A - Electric welding units - Google Patents
Electric welding unitsInfo
- Publication number
- GB1276421A GB1276421A GB01989/70A GB1198970A GB1276421A GB 1276421 A GB1276421 A GB 1276421A GB 01989/70 A GB01989/70 A GB 01989/70A GB 1198970 A GB1198970 A GB 1198970A GB 1276421 A GB1276421 A GB 1276421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rods
- electrodes
- magnetic circuit
- plates
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
1276421 Resistance welding B HUMBLOT 12 March 1970 [22 May 1969] 11989/70 Heading H5H In a resistance welding unit comprising a pair of electrodes 1, 2 connected to the secondary winding of a transformer having a primary winding(s) 32, 33 on a magnetic circuit 11, the welding electrodes 1, 2 are rigidly connected to the ends of respective parallel rods 5, 6 electrically interconnected at their other ends and mounted directly in the magnetic circuit 11 so that in use the rods 5, 6 and workpiece engaged thereby form the secondary circuit of the transformer, the rods 5, 6 being movable relative to the primary winding(s) 32, 33 and to each other. The magnetic circuit 11 comprises a stack of groups of plates insulated from one another by plates 26 and from upper and lower cheeks 13, 12 by plates 29, 28. The rods 5, 6 are interconnected at their upper ends by a stack of U- shaped flexible copper laminations. Two double acting rams, e.g. 47 control the rods 5, 6 independently. As shown, the cylinder of pneumatic ram 47 is fixed to cheek 13 and the pistonrod 54, 55 is secured to a driving plate 57 in which rod 5 is secured. The rods 5 and 6 are each hollow and provided internally with longitudinal tubes, e.g. 65 which terminate near electrodes 1, 2. Water is supplied to cool the electrodes from an orifice 67 in a cap 16 through a bellows like connection 66 to inner tube 65, returns up the outside of tube 65, passes via a flexible pipe 68 to the inner tube of the rod 6 and emerges from the rod via a bellows type connection to an outlet orifice in the cap 16. In use the workpiece rests on counter electrodes. A plurality of units of the type described can be installed in a multi-spot welding machine.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6916670A FR2044476A5 (en) | 1969-05-22 | 1969-05-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1276421A true GB1276421A (en) | 1972-06-01 |
Family
ID=9034439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB01989/70A Expired GB1276421A (en) | 1969-05-22 | 1970-03-12 | Electric welding units |
Country Status (5)
Country | Link |
---|---|
US (1) | US3663790A (en) |
DE (1) | DE7017101U (en) |
FR (1) | FR2044476A5 (en) |
GB (1) | GB1276421A (en) |
NL (1) | NL145161B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2505697A1 (en) * | 1981-05-12 | 1982-11-19 | Humblot Bernard | IMPROVED ELECTRIC WELDING UNIT |
FR2548942B1 (en) * | 1983-07-11 | 1986-10-10 | Humblot Bernard | SCISSOR TYPE RESISTANCE ELECTRIC WELDING UNIT |
US4682000A (en) * | 1985-03-18 | 1987-07-21 | Conrac Corporation | Welding transformer and rectifier assembly |
CN102267002B (en) * | 2011-07-25 | 2013-07-10 | 上海交通大学 | Magnetic control resistance spot-welding method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2126903A (en) * | 1936-12-03 | 1938-08-16 | William H Martin | Welding apparatus |
CH225203A (en) * | 1942-03-26 | 1943-01-15 | Schneider Jules | Electrically welding machine. |
US2749417A (en) * | 1952-12-26 | 1956-06-05 | Philip R Griskell | Portable electric spot welder |
US2929915A (en) * | 1958-03-31 | 1960-03-22 | Kirkhof Mfg Corp | Welding transformer apparatus |
US2961527A (en) * | 1958-06-04 | 1960-11-22 | Merit Company | Portable spot welder |
-
1969
- 1969-05-22 FR FR6916670A patent/FR2044476A5/fr not_active Expired
-
1970
- 1970-03-12 GB GB01989/70A patent/GB1276421A/en not_active Expired
- 1970-04-28 NL NL707006230A patent/NL145161B/en not_active IP Right Cessation
- 1970-05-04 US US34348A patent/US3663790A/en not_active Expired - Lifetime
- 1970-05-06 DE DE7017101U patent/DE7017101U/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2044476A5 (en) | 1971-02-19 |
DE2022315A1 (en) | 1972-02-17 |
NL7006230A (en) | 1970-11-24 |
DE7017101U (en) | 1970-11-12 |
DE2022315B2 (en) | 1976-07-01 |
US3663790A (en) | 1972-05-16 |
NL145161B (en) | 1975-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |