EP0478162B1 - Nietsetzgerät - Google Patents

Nietsetzgerät Download PDF

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Publication number
EP0478162B1
EP0478162B1 EP19910308125 EP91308125A EP0478162B1 EP 0478162 B1 EP0478162 B1 EP 0478162B1 EP 19910308125 EP19910308125 EP 19910308125 EP 91308125 A EP91308125 A EP 91308125A EP 0478162 B1 EP0478162 B1 EP 0478162B1
Authority
EP
European Patent Office
Prior art keywords
push rod
rod
trigger
valve
pressure
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
EP19910308125
Other languages
English (en)
French (fr)
Other versions
EP0478162A1 (de
Inventor
Theodore S. Komsta
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.)
Newfrey LLC
Original Assignee
Newfrey LLC
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 Newfrey LLC filed Critical Newfrey LLC
Publication of EP0478162A1 publication Critical patent/EP0478162A1/de
Application granted granted Critical
Publication of EP0478162B1 publication Critical patent/EP0478162B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/105—Portable riveters

Definitions

  • the present invention relates to rivet setting tools which rely on air pressure as the motive force (see for example US-A-4 598 571).
  • rivet tool speed is a function of the supplied air pressure and accordingly operators tend to increase air pressure to increase their throughput.
  • Such tools are designed for operation within a selected pressure range and when operated above this range the mechanisms will wear at a high rate.
  • the rivet setting tool 10 includes a molded trigger 12 pivotal about a trigger point 13 and having a cam surface 14 along its bottom for engaging a displaceable molded cam follower in the form of a cylindrical rod holder 16.
  • a push rod 18 Displaceable up and down within the vertical bore 17 of the rod holder 16 is a push rod 18 which is retained by a retaining pin 19 located within a suitable slot 20 in the push rod holder 16.
  • Compressively located between the head portion 24 of the push rod and the bottom shoulder 26 of the rod holder are outer and inner springs 28. The ends of the slot 20 determine the fully retracted and fully extended positions of the push rod relative to the rod holder 16.
  • a conical face double acting poppet valve 30 which is supported within a suitable bore 32 which communicates with the bore 34 in which the pressure regulator assembly is located.
  • pressurized inlet air from an external supply which enters via an opening 36 into the poppet valve bore 32 below the valve, forces the lower valve seal 38 into a closed position elevating the pressure regulator assembly and returning the trigger to its deactivated position.
  • air from the tool chamber will pass through a conduit 40, through the poppet valve and through the open exhaust side of the valve to an exhaust port 44.
  • pulling the trigger will lower the pressure regulator assembly sealing the upper valve seal 46 against the valve body 48 and opening the inlet side connecting supply air through conduit 40 to the tool chamber.
  • the strength of the springs 28 is selected so that should inlet air pressure exceed a specified pressure the springs will compress allowing downward displacement of the rod holder 16 relative to the stationary push rod 18 when the trigger is depressed to activate the system.
  • the inlet side of the valve accordingly will remain sealed and the outlet side will continue to connect the tool chamber to exhaust therefore preventing tool operation at an excessive pressure which could damage the tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Claims (1)

  1. Nietsetzwerkzeug (10), das aufweist:
       ein Zweiwege-Tellerventil (30) zum wechselnden Verbinden einer Luftleitung (40) von der Werkzeugkammer mit einer Einlaß-(36) und Auslaß-(44)-Leitung, wobei das Ventil (30) einen Körper (48) und eine Spulenanordnung mit einer oberen (46) und einer unteren (38) Ventildichtung aufweist,
       einen Triggerschalter (12), der verschiebbar zwischen einer gelösten und einer gedrückten Position ist und eine Nockenoberfläche (14) hat, und
       eine zurückziehbare Stangenanordnung, die zwischen dem Triggerschalter (12) und der Spulenanordnung angeordnet ist und die verschiebbar zwischen einer oberen und einer unteren Position ist, die eine Stößelstange (18) mit einem Kopfabschnitt (24) aufweist,
    dadurch gekennzeichnet, daß
       die Stangenanordnung des weiteren aufweist:
       eine Stangenhalteeinrichtung (16) zum Stützen der Stößelstange (18) für eine ausgewählte Bewegung zwischen einer vorgezogenen und einer zurückgezogenen Position relativ zu der Stangenhalteeinrichtung (16), und
       eine Federeinrichtung (28), die zusammendrückbar zwischen dem Kopfabschnitt (24) der Stößelstange und der Stangenhalteeinrichtung (16) angeordnet ist, und zwar zum Halten der Stößelstange (18) in der vorgezogenen Position und um einer Verschiebung der Stößelstange (18) in die zurückgezogene Position Widerstand entgegenzusetzen.
       wobei die Stärke der Federeinrichtung (28) so ausgewählt ist, so daß, solange der Betriebsluftdruck kleiner als ein maximaler Druck ist, ein Drücken des Triggerschalters (12) die Stangenanordnung mit der Stößelstange (18) verschieben wird bei der vorgezogenen Position von der oberen Position in die untere Position, wodurch die Einlaßseite des Tellerventils (30) geöffnet wird, aber daß, wenn der Betriebsdruck den Maximaldruck übersteigt, der Druck die Feder (28) überwinden wird, was die Stößelstange (18) von der vorgezogenen Position in die zurückgezogene Position verschiebt, wodurch die Einlaßseite des Tellerventils (30) geschlossen werden wird.
EP19910308125 1990-09-05 1991-09-05 Nietsetzgerät Expired - Lifetime EP0478162B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57795290A 1990-09-05 1990-09-05
US577952 1990-09-05

Publications (2)

Publication Number Publication Date
EP0478162A1 EP0478162A1 (de) 1992-04-01
EP0478162B1 true EP0478162B1 (de) 1994-04-27

Family

ID=24310823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910308125 Expired - Lifetime EP0478162B1 (de) 1990-09-05 1991-09-05 Nietsetzgerät

Country Status (3)

Country Link
EP (1) EP0478162B1 (de)
JP (1) JP2918362B2 (de)
DE (1) DE69101819T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2957349B2 (ja) * 1992-03-31 1999-10-04 帝人株式会社 糸条付着油剤の検知方法及び装置
IT1285509B1 (it) * 1996-01-31 1998-06-08 Far Srl Pistola rivettatrice pneumoidraulica
GB2424609B (en) * 2005-04-02 2007-10-24 Textron Fastening Syst Ltd Fastener installation tool including means for disabling the tool
CN103317075B (zh) * 2013-07-15 2015-02-11 芜湖精锋园林机械科技有限公司 一种刀具铆接加工工装

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL244173A (de) * 1958-10-09 1900-01-01
US3898833A (en) * 1974-04-15 1975-08-12 Textron Inc Air-hydraulic rivet gun
US4598571A (en) * 1984-04-02 1986-07-08 Usm Corporation Control valve for a mandrel collection system

Also Published As

Publication number Publication date
JPH04231138A (ja) 1992-08-20
DE69101819D1 (de) 1994-06-01
JP2918362B2 (ja) 1999-07-12
EP0478162A1 (de) 1992-04-01
DE69101819T2 (de) 1994-08-25

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