EP0493549B1 - Hydraulik- oder pneumatikzusatzantrieb für handblechformer - Google Patents

Hydraulik- oder pneumatikzusatzantrieb für handblechformer Download PDF

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Publication number
EP0493549B1
EP0493549B1 EP91911842A EP91911842A EP0493549B1 EP 0493549 B1 EP0493549 B1 EP 0493549B1 EP 91911842 A EP91911842 A EP 91911842A EP 91911842 A EP91911842 A EP 91911842A EP 0493549 B1 EP0493549 B1 EP 0493549B1
Authority
EP
European Patent Office
Prior art keywords
pressure plate
hydraulic
levers
tool insert
plate
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 - Lifetime
Application number
EP91911842A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0493549A1 (de
Inventor
Alex Lipp
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4235072&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0493549(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0493549A1 publication Critical patent/EP0493549A1/de
Application granted granted Critical
Publication of EP0493549B1 publication Critical patent/EP0493549B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/126—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with fluid drive
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive

Definitions

  • the invention has for its object to provide a device with which a hand lever operated hand sheet former can be converted into a sheet former with a hydraulic or pneumatic drive. The object is achieved according to the invention with the aid of the training features according to the characterizing part of patent claim 1.
  • the new pneumatic conversion kit is a pneumatic auxiliary drive with which sheet formers with manual operation (Fig. 1) available on the market can be converted to pneumatic operation (Fig. 2).
  • the conversion kit is mounted on the back of the plate former after the hand lever 1 has been removed.
  • the mechanism of the drive (Fig. 3) is controlled via a foot plate 2.
  • a valve 3 on the tread plate By opening a valve 3 on the tread plate, compressed air is admitted into a membrane cylinder 5 via a compressed air hose 4. Due to the pressure increase in the membrane cylinder, a push rod 6 is pressed horizontally out of the cylinder.
  • At the front end of the push rod is one Pressure plate 7 attached, which converges towards the front in a wedge shape.
  • a lower and an upper lever 8 are each supported by a roller 16 on the wedge-shaped surfaces 17 of the pressure plate.
  • the pressure plate is pressed between the levers by the push rod.
  • the mounting plate 9 serves as a guide.
  • the levers slide along the diverging surfaces 17 of the pressure plate and are thereby pushed apart. Because the levers are mounted on an axis of rotation 10, the front ends of the levers to which the tool insert 11 is fastened are pressed against one another. The tool closes.
  • the tread plate valve closes, whereupon the quick-release valve 12 on the membrane cylinder opens and the compressed air flows out of the membrane cylinder.
  • the pressure in the membrane cylinder drops and the push rod is pulled back into the basic position via a return spring in the membrane cylinder.
  • the compressed air supply in the membrane cylinder can be finely controlled using the treadle valve. Depending on how hard the tread plate is pressed down, the valve opens more or less and more or less compressed air flows into the membrane cylinder. Thanks to this possibility of fine control, the work movement can be carried out as quickly or slowly, strongly or weakly as desired.
  • the membrane cylinder is screwed to the mounting plate via two spacers 13.
  • the thrust path of the pressure plate can be determined with the spacers. A pressure is created between the conversion kit and the hand plate former.
  • the mounting plate 9 is connected to the axes of rotation 10 of the tool arms via two holding brackets 14 (FIG. 4).
  • the additional drive is with a protective casing 15 provided. It protects against accidents and prevents dirt and any objects from entering the mechanism. This reduces the possibility of damage.
  • the device according to the invention has significant advantages.
  • the pneumatic conversion kit is inexpensive and easy to assemble.
  • the existing additional drives which are only available for large sheet formers, cost ten to fifteen times more than this new small drive.
  • the fine control via the step plate allows a differentiated operation of the tool, which is on a par with the manual operation. No physical strength is required to operate it. This allows you to work without fatigue.
  • the drive can be operated by foot pressure, both hands are free to guide the workpiece to be shaped. This means that demanding work can be carried out by a single person. An assistant who helps hold the workpiece is no longer necessary. Thanks to the protective casing, the drive is also convincing in terms of accident safety.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Actuator (AREA)
  • Reciprocating Pumps (AREA)
  • Rehabilitation Tools (AREA)
EP91911842A 1990-07-27 1991-07-05 Hydraulik- oder pneumatikzusatzantrieb für handblechformer Expired - Lifetime EP0493549B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2494/90 1990-07-27
CH2494/90A CH682306A5 (enrdf_load_stackoverflow) 1990-07-27 1990-07-27
PCT/CH1991/000144 WO1992002338A1 (de) 1990-07-27 1991-07-05 Hydraulik- oder pneumatikzusatzantrieb für handblechformer

Publications (2)

Publication Number Publication Date
EP0493549A1 EP0493549A1 (de) 1992-07-08
EP0493549B1 true EP0493549B1 (de) 1994-06-22

Family

ID=4235072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91911842A Expired - Lifetime EP0493549B1 (de) 1990-07-27 1991-07-05 Hydraulik- oder pneumatikzusatzantrieb für handblechformer

Country Status (5)

Country Link
EP (1) EP0493549B1 (enrdf_load_stackoverflow)
AT (1) ATE107560T1 (enrdf_load_stackoverflow)
CH (1) CH682306A5 (enrdf_load_stackoverflow)
DE (1) DE59102014D1 (enrdf_load_stackoverflow)
WO (1) WO1992002338A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030207890A1 (en) 2001-02-23 2003-11-06 Collier Robert J Compounds with 5-ht1a activity useful for treating disorders of the outer retina

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH597985A5 (en) * 1975-03-06 1978-04-28 Willy Fluckiger Pneumatic pincers for crimping eyelet onto cable
FR2483271A1 (fr) * 1980-05-28 1981-12-04 Gateau Internal Appareil de faconnage de tubes
DE3742782A1 (de) * 1987-12-17 1989-07-06 Michael Dr Kretzschmar Druckmittelzange fuer federbandschellen
IT1224512B (it) * 1988-07-19 1990-10-04 Liri Costruzioni Mecc Mini-macchinetta curvatubi portatile a tre velocita' con possibile comando motorizzato o manuale e dispositivo di accoppiamento/disaccoppiamento automatico

Also Published As

Publication number Publication date
CH682306A5 (enrdf_load_stackoverflow) 1993-08-31
EP0493549A1 (de) 1992-07-08
DE59102014D1 (de) 1994-07-28
WO1992002338A1 (de) 1992-02-20
ATE107560T1 (de) 1994-07-15

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