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GB1299720A - Apparatus for continuously forming a metal framework - Google Patents

Apparatus for continuously forming a metal framework

Info

Publication number
GB1299720A
GB1299720A GB6331469A GB6331469A GB1299720A GB 1299720 A GB1299720 A GB 1299720A GB 6331469 A GB6331469 A GB 6331469A GB 6331469 A GB6331469 A GB 6331469A GB 1299720 A GB1299720 A GB 1299720A
Authority
GB
United Kingdom
Prior art keywords
struts
welding
strut
support
girder
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
Application number
GB6331469A
Inventor
Guiseppe Hell
Ottone Cristoforetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1299720A publication Critical patent/GB1299720A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F27/00Making wire network, i.e. wire nets
    • B21F27/12Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/20Making special types or portions of network by methods or means specially adapted therefor of plaster-carrying network
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/002Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B23K11/008Manufacturing of metallic grids or mats by spot welding
    • B23K11/0086Grids or mats used in concrete structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wire Processing (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

1299720 Welding by pressure; making lattice girders O CRISTOFORETTI and G HELL 30 Dec 1969 [13 Jan 1969 6 Dec 1969] 63314/69 Headings B3A and B3R An apparatus, for producing a lattice girder comprising a single upper and two lower longitudinal stringers 2, 3 and lateral struts 4, comprises means for feeding and maintaining the struts to and in welding positions, upper and lower strut/stringer welding means 30, 35, and a reciprocating transporting means 60 for longitudinally moving the girder through the apparatus. The upper welding means 30 (Figs. 2, 4) comprises pairs of parallel hydraulically actuated, spring returned, electrodes 31 having cranked ends and being rotationally adjustable about their longitudinal axes such that said ends of each pair may be adjusted towards and away from each other in the longitudinal direction of the girder. The electrodes are also pivotable about transverse axes to accommodate strut angle. The lower welding means 35 (Figs. 1, 5) comprises hydraulically, pneumatically or electrically actuated plate units 36. Units 38 guide and support the partly formed framework through the lower welding means. The transporting means 60 comprises a reciprocating carriage 62 having a support 61 engageable with the underside of the stringer 2 and one-way acting pawls 63 engageable with the struts 4. As shown, the struts 4 are loaded into hoppers 11 having at their exits rotatable, peripherally slotted drums 12 by which the struts are metered through shoots 14 into magazines 16. Drum operation is controlled by means optically, electrically or mechanically sensing magazine stock. Hydraulically actuated pistons 8 project the struts from the magazines towards a strut clamping device comprising variable angle fixed plates 41 and a double jaw member 42 acted on by a pneumatic or hydraulic cylinder 45 via an inverted wedge 43. In Fig. 6 (not shown), the jaw member 42 is replaced by a quadrilateral linkage (48). In Fig. 7 (not shown), the struts are clamped between fixed inner plates (51) and movable outer plates (52). In Figs. 8, 9 (not shown), the struts are clamped between fixed outer rollers (56) and an upwardly movable wedge (58). In Figs 11, 12 (not shown), the struts fall from metering drums (71), through tubes (73), directly on to a suitable recessed support (75) which after welding is downwardly withdrawn. In Fig. 13 (not shown), the struts are formed from wire which is fed from storage reels (80), through wire straighteners (81), into engagement with a support, the lower ends of the struts being severed from the fed wire by cutters (82). Fail-safe devices (not shown or described) are provided to stop the apparatus in the event of malfunction or strut supply interruption.
GB6331469A 1969-01-13 1969-12-30 Apparatus for continuously forming a metal framework Expired GB1299720A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3413369 1969-01-13
IT4203069 1969-12-06

Publications (1)

Publication Number Publication Date
GB1299720A true GB1299720A (en) 1972-12-13

Family

ID=26328987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6331469A Expired GB1299720A (en) 1969-01-13 1969-12-30 Apparatus for continuously forming a metal framework

Country Status (6)

Country Link
AT (1) AT311155B (en)
CH (1) CH504251A (en)
DE (1) DE2001358C3 (en)
FR (1) FR2028222A1 (en)
GB (1) GB1299720A (en)
SE (1) SE352551B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120151A (en) * 1979-09-17 1983-11-30 Covington Technologies Method and apparatus for welding
WO2013080142A1 (en) * 2011-11-28 2013-06-06 Antonios Anagnostopoulos Method and system for the production of reinforcing dowel baskets for contracting-expanding joints
CN103796771A (en) * 2011-06-30 2014-05-14 发展机械及自动化股份公司 Method and device for continuously producing mesh-type support
CN110116264A (en) * 2019-05-09 2019-08-13 四川九州光电子技术有限公司 The lower electrode leveling device of welder
CN112958937A (en) * 2021-03-18 2021-06-15 济南奥图科技有限责任公司 Automatic welding production line for net frame

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120151A (en) * 1979-09-17 1983-11-30 Covington Technologies Method and apparatus for welding
CN103796771A (en) * 2011-06-30 2014-05-14 发展机械及自动化股份公司 Method and device for continuously producing mesh-type support
CN103796771B (en) * 2011-06-30 2015-09-16 发展机械及自动化股份公司 For manufacturing the method and apparatus of girder truss continuously
WO2013080142A1 (en) * 2011-11-28 2013-06-06 Antonios Anagnostopoulos Method and system for the production of reinforcing dowel baskets for contracting-expanding joints
US9561557B2 (en) 2011-12-22 2017-02-07 Antonios Anagnostopoulos Method and system for the production of reinforcing dowel baskets for contracting-expanding joints
CN110116264A (en) * 2019-05-09 2019-08-13 四川九州光电子技术有限公司 The lower electrode leveling device of welder
CN112958937A (en) * 2021-03-18 2021-06-15 济南奥图科技有限责任公司 Automatic welding production line for net frame

Also Published As

Publication number Publication date
DE2001358A1 (en) 1970-08-20
CH504251A (en) 1971-03-15
DE2001358B2 (en) 1978-08-24
SE352551B (en) 1973-01-08
AT311155B (en) 1973-11-12
FR2028222A1 (en) 1970-10-09
DE2001358C3 (en) 1979-04-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee