EP0007534B1 - Accessoire pour l'avancement pneumatique des clous dans un outil pneumatique d'enfoncement - Google Patents

Accessoire pour l'avancement pneumatique des clous dans un outil pneumatique d'enfoncement Download PDF

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Publication number
EP0007534B1
EP0007534B1 EP79102438A EP79102438A EP0007534B1 EP 0007534 B1 EP0007534 B1 EP 0007534B1 EP 79102438 A EP79102438 A EP 79102438A EP 79102438 A EP79102438 A EP 79102438A EP 0007534 B1 EP0007534 B1 EP 0007534B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
working
fitting
nail
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
EP79102438A
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German (de)
English (en)
Other versions
EP0007534A1 (fr
Inventor
Arthur Klaus
Hans Wilhelm
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.)
Signode Corp
Original Assignee
Signode Corp
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Filing date
Publication date
Application filed by Signode Corp filed Critical Signode Corp
Publication of EP0007534A1 publication Critical patent/EP0007534A1/fr
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Publication of EP0007534B1 publication Critical patent/EP0007534B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder

Definitions

  • the invention relates to an additional device for pneumatic nail feed of a compressed air-operated nail driving device with a cylinder in which a working piston is axially displaceably mounted, which carries a driver pin at the lower end, an expulsion channel formed at the lower end of the cylinder, in which the driver pin is guided and which is connected to a fastener magazine, a main control valve arranged at the upper end of the cylinder, a compressed air supply chamber separated from the working chamber of the cylinder by the main control valve and a cover closing the cylinder (DE-A-2 529 873).
  • pneumatic driving tools work with an operating pressure of 6 to 8 bar.
  • the compressed air is admitted into a cylinder chamber by control valves, the working piston being axially displaced with a driver pin fastened to the floor and a fastening means such as. B. a nail, a clamp or the like.
  • n drives a workpiece.
  • the fastening means preferably a nail
  • the fastening means lies in its entire length in the drive-out channel during one operation, the position of the nail to be driven in can be determined only with difficulty.
  • the sheet thickness is less than 2 mm
  • the nail can be driven through the sheet without holes are provided in the sheet.
  • the impact force of the working piston is not sufficient to drive the nail through the sheet into the workpiece.
  • holes are provided in the sheets through which the nail is driven into the workpiece.
  • driving tools are provided with an additional device which has the task of partially pushing the nail out of the driving channel. This allows the nail to be placed exactly on the specified attachment point of the workpieces (e.g. on holes in perforated sheets) and driven into them.
  • Additional devices are already known, in the form of a compressed air cylinder arranged on the cover of the driving tool, the piston rod of which axially displaces the working piston on impulse and pushes the nail a little out of the driving channel.
  • additional devices limit the mode of operation of a portable and hand-held driving tool, since they exceed the limited size in any case.
  • the invention has for its object to provide an additional filing for pneumatic nail feed that does not significantly increase the size and weight of a portable and hand-held driving tool.
  • This object is achieved in that a pneumatic control system is installed in the cover, which pushes the working piston axially up to an overflow when a switching element is actuated and thus pushes the nail out of the drive-out channel a little.
  • This control system preferably consists of a control piston arranged concentrically in the cover, which is provided with an axial bore which is connected to a compressed air reservoir in the operating position of the control piston.
  • control piston is expediently provided on its end face with a sealing ring which surrounds the mouth of the bore and which closes the exhaust air opening arranged in the main control valve when the control piston is in the operating position. This measure ensures that the working space of the cylinder comes into connection with the compressed air reservoir in the operating position of the control piston.
  • a check valve is expediently arranged in the overflow and can be actuated simultaneously with the control piston in the opening direction via a rocker. If the working piston has moved to the overflow after actuation of the rocker, the compressed air can escape from the working chamber of the cylinder through the overflow and the working piston stops.
  • the compressed air required for pneumatic feed control is expediently taken directly from the driving tool.
  • the bore arranged in the control piston is aligned in the operating position of the control piston with a supply line arranged in the cover, which leads into the compressed air supply space.
  • An adjustable throttle is expediently installed in the feed line in order to be able to set the feed speed of the working piston.
  • Fig. 1 shows a compressed air-operated nail device of conventional type.
  • This nail device consists of a trigger valve 1, a main control valve 2 and a cylinder 3, in which a working piston 4 designed as a differential piston is axially displaceably mounted, which is provided on the bottom with a driver pin 5.
  • the main control valve 2 is provided with an auxiliary piston 6, in which an axial exhaust air opening 22 is formed.
  • a cover 7 is fastened over the main control valve 2.
  • This additional device consists of a control piston 8 which is mounted coaxially to the working piston and a ball check valve 9 (FIG. 2), both of which can be triggered via a switching element 10, which is referred to below as a rocker 10.
  • a helical spring 16 is supported on the cover 7 and on the control piston 8 in order to load it upwards into its rest position.
  • the control piston 8 is provided on its lower end face with a sealing ring 19.
  • the ball check valve 9 opening into the atmosphere is connected to the working space of the cylinder 3 via an overflow line 13.
  • a feed line 11 is formed, which opens into the compressed air storage space 20.
  • the control piston 8 is provided with a bore 12 which consists of a lower axial region and an upper radial region. The radial region of the bore 12 can be made to coincide with the feed line 11 formed in the cover 7.
  • the space between the auxiliary piston 6 and the control piston 8 communicates with the atmosphere via outlet openings 17 formed in the cover 7.
  • the driver pin 5 fastened to the working piston 4 is guided in an expulsion channel 14 in order to drive in a nail 15 which is fed laterally from a conventional nail magazine 21.
  • the nailing device provided with the above-described auxiliary device for pneumatic nail feed works as follows:

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (6)

1. Accessoire pour l'avance pneumatique des clous dans un outil pneumatique d'enfoncement comprenant un cylindre (3) dans lequel est monté déplaçable en direction axiale un piston de travail (4) portant à son extrémité inférieure un axe formant chasse-clou (5), et comprenant également un canal d'évacuation (14) formé à l'extrémité inférieure dudit cylindre dans lequel l'axe chasse-clou (5) est guidé et qui communique avec un magasin (21) de réserve de moyens de fixation, une soupape principale de commande (2) prévue à l'extrémité supérieure dudit cylindre, un volume de réserve d'air comprimé (20) séparé par ladite soupape principale de commande du volume de travail du cylindre ainsi qu'un capot (7) recouvrant le cylindre précité, caractérisé en ce que dans le capot (7) on a prévu un système de commande pneumatique (8, 9) qui, lorsqu'est actionné un élément de commande (10), déplace le piston de travail (4) en direction axiale jusqu'à un tube de tropplein (13) et qui chasse ainsi du canal d'évacuation (14), l'élément de fixation (15) sur une certaine portion.
2. Accessoire selon la revendication 1, caractérisé en ce que le système de commande précité est formé d'un piston de commande (8) monté concentriquement dans le capot (7) qui comprend un alésage axial (12) communiquant dans la position de fonctionnement du piston de commande précité, avec une réserve d'air comprimé.
3. Accessoire selon la revendication 2, caractérisé en ce que le piston de commande (8) comprend sur sa face frontale, un joint d'étanchéité annulaire (19) entourant le débouché de l'alésage (12) qui obture l'orifice d'évacuation d'air (22) prévu dans la soupape principale de commande (2) lorsque le piston de commande précité se trouve dans sa position de travail.
4. Accessoire selon l'une des revendications 1 à 2, caractérisé en ce que dans le dispositif de trop-plein (13) on a prévu une soupape de retenue (9) qui peut être actionnée dans le sens d'une ouverture, en même temps que le piston de commande (8), par l'intermédiaire d'un élément de commande (10) notamment formé d'une bascule.
5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que l'alésage (12) prévu dans le piston de commande (8) vient en alignement, dans la position de fonctionnement de ce dernier, d'une conduite d'amenée (11) prévue dans le capot (7) qui débouche dans la réserve d'air comprimé.
6. Accessoire selon la revendication 5, caractérisé en ce que dans ladite conduite d'amenée (11) est monté un dispositif d'étranglement réglable.
EP79102438A 1978-07-14 1979-07-13 Accessoire pour l'avancement pneumatique des clous dans un outil pneumatique d'enfoncement Expired EP0007534B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2831055 1978-07-14
DE19782831055 DE2831055A1 (de) 1978-07-14 1978-07-14 Zusatzeinrichtung fuer pneumatischen nagelvorschub eines druckluftbetriebenen eintreibgeraetes

Publications (2)

Publication Number Publication Date
EP0007534A1 EP0007534A1 (fr) 1980-02-06
EP0007534B1 true EP0007534B1 (fr) 1981-10-14

Family

ID=6044423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79102438A Expired EP0007534B1 (fr) 1978-07-14 1979-07-13 Accessoire pour l'avancement pneumatique des clous dans un outil pneumatique d'enfoncement

Country Status (9)

Country Link
US (1) US4252261A (fr)
EP (1) EP0007534B1 (fr)
JP (1) JPS5518392A (fr)
AU (1) AU521781B2 (fr)
CA (1) CA1100703A (fr)
DE (1) DE2831055A1 (fr)
DK (1) DK296479A (fr)
FI (1) FI62781C (fr)
NZ (1) NZ190696A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT7904909V0 (it) * 1979-08-09 1979-08-09 Fasco Srl Meccanismo di scatto per pistola chiodatrice a valvola in testa
FR2474270A1 (fr) * 1980-01-21 1981-07-24 Radiotechnique Compelec Procede et dispositif d'assemblage simultane de composants sur un support
DE3028101C2 (de) * 1980-07-24 1983-06-01 Gebrüder Kömmerling Kunststoffwerke GmbH, 6780 Pirmasens Fußbodenheizung
DE3119956C2 (de) * 1981-05-20 1984-11-22 Joh. Friedrich Behrens AG, 2070 Ahrensburg Schallgedämpftes Eintreibgerät für Befestigungsmittel
US4747338A (en) * 1983-06-13 1988-05-31 Sencorp Pneumatic gun having improved firing valve
US4986164A (en) * 1983-06-13 1991-01-22 Senco Products, Inc. Pneumatic gun having improved firing valve
US5110030A (en) * 1990-08-10 1992-05-05 Hitachi Koki Co., Ltd. Pneumatic fastener driving tool having an air exhaust arrangement
US5207143A (en) * 1991-05-16 1993-05-04 Umberto Monacelli Pneumatic fastener driving apparatus with an improved valve
EP2367660B1 (fr) 2008-12-24 2019-07-10 Globalforce IP Limited Système d'actionnement
WO2021211546A1 (fr) * 2020-04-14 2021-10-21 Kyocera Senco Industrial Tools, Inc. Pistolet pneumatique à micro-attaches

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1246622B (de) * 1962-07-06 1967-08-03 Haubold Dieter Mit Pressluft betriebenes Geraet zum Eintreiben von Klammern, Naegeln und aehnlichenBefestigungsmitteln
US3374934A (en) * 1963-11-05 1968-03-26 Dickson Weatherproof Nail Comp Nail driving apparatus
DE1503033A1 (de) * 1965-07-09 1969-12-04 Reich Maschf Gmbh Karl Druckluftnagler
US3605559A (en) * 1969-08-18 1971-09-20 Jurgen Korth Pneumatically actuated stapling device
US3776444A (en) * 1971-06-21 1973-12-04 Trw Inc Loop fastener gun assembly
DE2529873C3 (de) * 1975-07-04 1978-06-15 Heinrich Buehnen Kg, 2800 Bremen Kraftbetriebenes Eintreibwerkzeug für Befestigungsmittel
US4136810A (en) * 1977-10-27 1979-01-30 Advance Nailing Tools, Inc. Automatic nailer gun and magazine

Also Published As

Publication number Publication date
AU521781B2 (en) 1982-04-29
NZ190696A (en) 1982-12-07
FI62781B (fi) 1982-11-30
FI791789A (fi) 1980-01-15
EP0007534A1 (fr) 1980-02-06
CA1100703A (fr) 1981-05-12
AU4729479A (en) 1980-01-17
US4252261A (en) 1981-02-24
DE2831055A1 (de) 1980-01-24
JPS5518392A (en) 1980-02-08
DK296479A (da) 1980-01-15
FI62781C (fi) 1983-03-10
DE2831055C2 (fr) 1987-08-27

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