EP0345488A2 - Einrichtung zur Herstellung von Streckmetall - Google Patents

Einrichtung zur Herstellung von Streckmetall Download PDF

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Publication number
EP0345488A2
EP0345488A2 EP89108708A EP89108708A EP0345488A2 EP 0345488 A2 EP0345488 A2 EP 0345488A2 EP 89108708 A EP89108708 A EP 89108708A EP 89108708 A EP89108708 A EP 89108708A EP 0345488 A2 EP0345488 A2 EP 0345488A2
Authority
EP
European Patent Office
Prior art keywords
ram
sheet metal
rods
improved machine
cross
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.)
Withdrawn
Application number
EP89108708A
Other languages
English (en)
French (fr)
Other versions
EP0345488A3 (de
Inventor
Giuseppe Longhi
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 EP0345488A2 publication Critical patent/EP0345488A2/de
Publication of EP0345488A3 publication Critical patent/EP0345488A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
    • B21D31/043—Making use of slitting discs or punch cutters

Definitions

  • This invention relates to expanded sheet metal production machines comprising a ram driven to undergo reciprocating movement away from and towards the sheet metal to be expanded and carrying a toothed blade which moves with reciprocating movement perpendicular to the movement of the ram and acts on the sheet metal in cooperation with a backing blade able to retract against the action of elastic reaction means.
  • the main object of the present invention is to provide an improved machine of the specified type in which for equal conditions the moving members have a longer life, or alternatively in which for equal life the production rate can be increased.
  • the elastic means are of pneumatic type and are preferably pneumatic cylinders.
  • pneumatic cylinders allow the pressure of the contained air mass and hence their elastic reaction to be easily adjusted.
  • rigid with the ram there are provided rods axially guided in stationary supports and connected together in pairs by cross-members on which the rods of fixedly-mounted pneumatic cylinders operate.
  • the machine incorporates a static structure comprising a bed 1, two parallel side members 2 extending vertically beyond the base, and a cross-member, not shown, which upperly joins the two side members together.
  • the bed 1 comprises an upper surface 3 on which the sheet metal 4 to be stretched slides and at the end of which there is slidingly mounted (see arrows) a backing blade 5 which is held by an elastic reaction means such as a pneumatic cylinder 6 against a stop member 7 provided on the bed.
  • the backing blade 5 is designed to cooperate with a toothed blade 8 fixed to a slide 9 which is mounted in and slidable in the longitudinal direction of a ram 10 and is driven with reciprocating movement by known means, not shown.
  • crank mechanisms or the like of which the connecting rod small end 11 can be seen in Figure 3.
  • crank mechanisms for example from the patent cited in the introduction.
  • the ram 10 comprises a cylindrical seat 12 formed from two cylindrical half-seats removably joined together, and in which a bar 13 is mounted and clamped.
  • the projecting ends of said bar 13 are rigid with a support 14.
  • a guide rod 15 is rigid with the support 14 and can slide axially in two stationary supports 16A, B connected to the machine side members 2.
  • a cross-member 17 is fixed to the upper supports 16A.
  • the rods 20 are in contact with the cross-member 21. This contact is due to the air acting below the piston 19 at a given pressure. Such contact can be permanent or be limited to around the bottom dead centre of the motion of the ram 10 and thus of the relative toothed blade 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Transmission Devices (AREA)
EP19890108708 1988-06-10 1989-05-16 Einrichtung zur Herstellung von Streckmetall Withdrawn EP0345488A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02941/88A IT1220268B (it) 1988-06-10 1988-06-10 Macchina perfezionata per produrre lamiera stirata
IT294188 1988-06-10

Publications (2)

Publication Number Publication Date
EP0345488A2 true EP0345488A2 (de) 1989-12-13
EP0345488A3 EP0345488A3 (de) 1990-10-17

Family

ID=11104115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890108708 Withdrawn EP0345488A3 (de) 1988-06-10 1989-05-16 Einrichtung zur Herstellung von Streckmetall

Country Status (2)

Country Link
EP (1) EP0345488A3 (de)
IT (1) IT1220268B (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082568B (de) * 1958-01-14 1960-06-02 Brueck K G M Einrichtung zum Herstellen von Streckmetall
US3218689A (en) * 1963-03-01 1965-11-23 Urbana Tool And Die Co Expanded metal press
US3677055A (en) * 1970-05-29 1972-07-18 Giuseppe Longhi Apparatus for making shaped bores in a continuous strip

Also Published As

Publication number Publication date
EP0345488A3 (de) 1990-10-17
IT1220268B (it) 1990-06-06
IT8802941A0 (it) 1988-06-10

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