EP0050122A1 - Driving device for fastener means. - Google Patents

Driving device for fastener means.

Info

Publication number
EP0050122A1
EP0050122A1 EP81900816A EP81900816A EP0050122A1 EP 0050122 A1 EP0050122 A1 EP 0050122A1 EP 81900816 A EP81900816 A EP 81900816A EP 81900816 A EP81900816 A EP 81900816A EP 0050122 A1 EP0050122 A1 EP 0050122A1
Authority
EP
European Patent Office
Prior art keywords
impact
main body
percussion
housing insert
housing
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.)
Granted
Application number
EP81900816A
Other languages
German (de)
French (fr)
Other versions
EP0050122B1 (en
Inventor
M Reich Maschinenfabrik G Karl
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.)
Karl M Reich Maschinenfabrik GmbH
Original Assignee
Karl M Reich Maschinenfabrik GmbH
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 Karl M Reich Maschinenfabrik GmbH filed Critical Karl M Reich Maschinenfabrik GmbH
Publication of EP0050122A1 publication Critical patent/EP0050122A1/en
Application granted granted Critical
Publication of EP0050122B1 publication Critical patent/EP0050122B1/en
Expired legal-status Critical Current

Links

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
    • B25C1/047—Mechanical details

Definitions

  • the invention relates to a wrapping device for fasteners according to the preamble of claim 1.
  • Bumpers made of soft material show high wear and must be replaced quickly.
  • a soft impact buffer a different depth of impact of the fasteners, which e.g. is particularly disadvantageous for nails with their visible nail heads.
  • the invention is therefore based on the object of providing an impact device for fastening means in which the impact sound is damped as much as possible without the usual service life of the impact buffer being impaired.
  • a housing insert is arranged between the main body and the striking cylinder.
  • This housing insert which is separated from the inner wall of the main body in the area of the impact buffer and on the bottom of which the impact buffer rests, prevents the impact sound from being passed on to the housing and thus to the environment. If, according to the invention, the housing insert consists of a plastic with high internal damping, the excess impact energy and thus also the impact sound is largely destroyed in the housing insert.
  • FIG. 1 Wrapping device according to the invention, partially cut.
  • the wrapping device consists in a known manner of a housing 1 with a cup-shaped main body 2 and the associated hollow handle 3, through which the compressed air is supplied from a compressed air source, not shown.
  • the main body 2 is closed at the top by a housing cover 4.
  • the main body 2 has a depression 5 in its upper region, in which a cup-shaped housing insert 6 with an annular flange 7 is mounted.
  • a locking ring 8 serves to hold the housing insert 6.
  • the cross section of the housing insert 6 is dimensioned such that an intermediate space 9 is present between the main body 2 and the housing insert 6.
  • the housing insert 6 has an inclined bottom 10, on which the impact buffer 11 made of elastic material rests.
  • the space 9 also continues in the area of the floor 10 and the main body 2. 6
  • the housing insert is preferably made of the plastics
  • Polyamide or polypropylene, with polypropylene in particular having high internal damping are examples of polyamide or polypropylene, with polypropylene in particular having high internal damping.
  • the percussion cylinder 12 is now mounted between the housing cover 4 and the bottom 10 of the housing insert 6 and guides the percussion piston 13, the percussion plunger 14 of which serves to drive in fasteners, not shown, in a known manner.
  • the blow is triggered and controlled by the known and not described trigger valve 15 with control valve 16.
  • a support cushion 1.8 made of elastic material can be provided between the bottom 10 of the housing insert 6 and between the bottom 17 of the main body 2 to support and fix the housing insert 6. Since such a material also has a high internal damping, the support sound cannot be transmitted from the floor 10 to the main body 2. Rather, additional cushioning of this impact sound occurs through the support cushion 18.

Landscapes

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

Abstract

L'energie de percussion excedentaire d'un appareil de penetration pour moyen de fixation, tel que clou, est recuperee par un amortisseur (11) en matiere elastique; un boitier (6) en forme de pot est dispose entre un corps principal (2) en forme de pot et le cylindre de percussion (12). Il consiste en une matiere plastique ayant un amortissement interne eleve, si bien que l'energie de percussion excedentaire et avec cela le bruit de percussion sont reduits en grande partie deja dans le boitier (6). L'ouvrier n'est donc pas importune inutilement et le boitier (1) peut etre fabrique a meilleur prix, plus aisement et a meilleur rendement.The excess percussion energy of a penetrating device for fixing means, such as a nail, is recovered by a shock absorber (11) made of elastic material; a pot-shaped case (6) is disposed between a pot-shaped main body (2) and the percussion cylinder (12). It consists of a plastic material with a high internal damping, so that the excess percussion energy and with this the percussion noise are largely reduced already in the housing (6). The worker is therefore not unnecessarily annoying and the box (1) can be manufactured at a better price, more easily and with better performance.

Description

Einschlaggerät für BefestigungsmittelWrapping device for fasteners
Die Erfindung betrifft ein Einschlaggerät für Befestigungsmittel gemäß Oberbegriff von Anspruch 1.The invention relates to a wrapping device for fasteners according to the preamble of claim 1.
Bei solchen Einschlaggeräten wird die überschüssige Schlagenergie oder die Schlagenergie bei Leerschlägen durch einen Schlagpuffer aus elastischem Werkstoff aufgefangen und vernichtet. Dabei tritt jedoch ein sehr starker Aufschlagschall auf, der vom Puffer über das Gehäuse an die Umgebung abgestrahlt wird. Wegen der großen Intensität und hohen Schlagzahl wird der Bedienungsmann von diesem Aufschlagschall erheblich belästigt. Es wurde daher bereits versucht, diesen Schall durch Verwendung von Schlagpuffern aus verhältnismäßig weichem, elastischem Werkstoff herabzusetzen. Auch ist es bekannt, das Gehäuse und andere Teile des Einschlaggerätes, die normalerweise aus Leichtmetall bestehen, mit einem geeigneten Dämmstoff zu beschichten.In such impact devices, the excess impact energy or the impact energy in the case of empty hits is absorbed and destroyed by a shock buffer made of elastic material. However, a very strong impact sound occurs, which is emitted from the buffer through the housing to the environment. Because of the high intensity and high number of blows, the operator is considerably annoyed by this impact sound. Attempts have therefore already been made to reduce this sound by using impact buffers made of relatively soft, elastic material. It is also known to coat the housing and other parts of the wrapping device, which normally consist of light metal, with a suitable insulating material.
Schlagpuffer aus weichem Werkstoff weisen jedoch einen hohen Verschleiß auf und müssen rasch ersetzt werden. Außerdem ergibt sich je nach Festigkeit des Werkstückes, z.B. aus Holz, bei einem weichen Schlagpuffer eine verschiedene Einschlagtiefe der Befestigungsmittel, was z.B. bei Nägeln mit ihren sichtbaren Nagelköpfen besonders nachteilig ist.Bumpers made of soft material, however, show high wear and must be replaced quickly. In addition, depending on the strength of the workpiece, e.g. made of wood, with a soft impact buffer a different depth of impact of the fasteners, which e.g. is particularly disadvantageous for nails with their visible nail heads.
Eine Beschichtung mit Dämmstoffen ist nicht bei allen Teilen des Einschlaggerätes möglich, die Schalldämpfung ist in diesem Fall daher nur unvollkommen. Der Erfindung liegt daher die Aufgabe zugrunde, eine Einschlaggerät für Befestigungsmittel zu schaffen, bei dem eine möglichst hohe Dämpfung des Aufschlagschalles erfolgt, ohne daß die übliche Lebensdauer des Schlagpuffers beeinträchtigt wird.A coating with insulation is not possible for all parts of the wrapping machine, so the sound insulation is only incomplete in this case. The invention is therefore based on the object of providing an impact device for fastening means in which the impact sound is damped as much as possible without the usual service life of the impact buffer being impaired.
Diese Aufgabe wird dadurch gelöst, daß zwischen dem Hauptkörper und dem Schlagzylinder ein Gehäuseeinsatz angeordnet ist.This object is achieved in that a housing insert is arranged between the main body and the striking cylinder.
Durch diesen Gehäuseeinsatz, der im Bereich des Schlagpuffers von der Innenwand des Hauptkörpers getrennt ist, und auf dessen Boden der Schlagpuffer aufliegt, wird verhindert, daß der Aufschlagschall an das Gehäuse und damit an die Umgebung weitergeleitet wird. Besteht der Gehäuseeinsatz erfindungsgemäß aus einem Kunststoff mit hoher innerer Dämpfung, so wird die überschüssige Schlagenergie und damit auch der Aufschlagschall bereits im Gehäuseeinsatz zum großen Teil vernichtet.This housing insert, which is separated from the inner wall of the main body in the area of the impact buffer and on the bottom of which the impact buffer rests, prevents the impact sound from being passed on to the housing and thus to the environment. If, according to the invention, the housing insert consists of a plastic with high internal damping, the excess impact energy and thus also the impact sound is largely destroyed in the housing insert.
Damit kann die überschüssige Schlagenergie auch nicht auf das Gehäuse weitergeleitet werden und dieses kann aus einem billigeren Werkstoff hergestellt und so gestaltet werden, daß eine wirtschaftlichere Fertigung des Gehäuses und ein geringeres Gewicht des gesamten Einschlaggerätes möglich ist.So that the excess impact energy can not be passed on to the housing and this can be made of a cheaper material and designed so that a more economical production of the housing and a lower weight of the entire wrapping device is possible.
Im folgenden ist ein Ausführungsbeispiel der Erfindung unter. Bezugnahme auf die Zeichnung näher beschrieben:The following is an embodiment of the invention below. Described in more detail with reference to the drawing:
Es zeigt:It shows:
Fig. 1. Einschlaggerät gemäß Erfindung, teilweise geschnitten. Das Einschlaggerät besteht in bekannter Weise aus einem Gehäuse 1 mit einem topfförmigen Hauptkörper 2 und dem damit verbundenen, hohlen Handgriff 3, durch den die Druckluft aus einer nicht dargestellten Druckluftquelle zugeleitet wird. Der Hauptkörper 2 ist oben durch einen Gehäύsedeckel 4 verschlossen.Fig. 1. Wrapping device according to the invention, partially cut. The wrapping device consists in a known manner of a housing 1 with a cup-shaped main body 2 and the associated hollow handle 3, through which the compressed air is supplied from a compressed air source, not shown. The main body 2 is closed at the top by a housing cover 4.
Der Hauptkörper 2 weist in seinem oberen Bereich eine Einsenkung 5 auf, in dem ein topfförmiger Gehäuseeinsatz 6 mit einem Ringflansch 7 gelagert ist. Ein Sicherungsring 8 dient zum Halten von Gehäuseeinsatz 6. Der Querschnitt von Gehäuseeinsatz 6 ist so bemessen, daß zwischen dem Hauptkörper 2 und dem Gehäuseeinsatz 6 ein Zwischenraum 9 vorhanden ist.The main body 2 has a depression 5 in its upper region, in which a cup-shaped housing insert 6 with an annular flange 7 is mounted. A locking ring 8 serves to hold the housing insert 6. The cross section of the housing insert 6 is dimensioned such that an intermediate space 9 is present between the main body 2 and the housing insert 6.
Am einschlagseitigen Ende weist der Gehäuseeinsatz 6 einen geneigten Boden 10 auf, auf dem der Schlagpuffer 11 aus elastischem Werkstoff aufliegt. Der Zwischenraum 9 setzt sich auch in den Bereich von Boden 10 und Hauptkörper 2 fort. 6At the impact-side end, the housing insert 6 has an inclined bottom 10, on which the impact buffer 11 made of elastic material rests. The space 9 also continues in the area of the floor 10 and the main body 2. 6
Der Gehäuseeinsatzlbesteht vorzugsweise aus den KunststoffenThe housing insert is preferably made of the plastics
Polyamid oder Polypropylen, wobei besonders Polypropylen eine hohe innere Dämpfung aufweist.Polyamide or polypropylene, with polypropylene in particular having high internal damping.
Der Schlagzylinder 12 ist nun zwischen Gehäusedeckel 4 und Boden 10 von Gehäuseeinsatz 6 gelagert und führt den Schlagkolben 13, dessen Schlagstößel 14 in bekannter Weise dem Einschlagen von nicht dargestellten Befestigungsmitteln dient. Die Auslösung und Steuerung des Schlages erfolgt durch das bekannte und nicht näherbeschriebene Auslöseventil 15 mit Steuerventil 16.The percussion cylinder 12 is now mounted between the housing cover 4 and the bottom 10 of the housing insert 6 and guides the percussion piston 13, the percussion plunger 14 of which serves to drive in fasteners, not shown, in a known manner. The blow is triggered and controlled by the known and not described trigger valve 15 with control valve 16.
Beim Einschlagen trifft Schlagkolben 13 auf den Schlagpuffer 11 und erzeugt dabei den Aufschlagschall, der teilweise durch innere Dämpfung im Gehäuseeinsatz 6 vernichtet wird und der durch den Zwischenraum 9 zwischen Gehäuseeinsatz 6 und Hauptkörper 2 weiter gedämpft wird. Zur Abstützung und Fixierung von Gehäuseeinsatz 6 kann zwischen dem Boden 10 von Gehäuseeinsatz 6 und zwischen dem Boden 17 von Hauptkörper 2 ein Auflagekissen 1.8 aus elastischem Werkstoff vorgesehen sein. Da ein solcher Werkstoff ebenfalls eine hohe innere Dämpfung aufweist, kann der Auflageschall nicht vom Boden 10 auf den Hauptkörper 2 weitergeleitet werden. Durch das Auflagekissen 18 tritt vielmehr eine zusätzliche Dämpfung dieses Aufschlagschalles ein. When hammering in, the percussion piston 13 hits the impact buffer 11 and thereby generates the impact sound, which is partially destroyed by internal damping in the housing insert 6 and which is further damped by the space 9 between the housing insert 6 and the main body 2. A support cushion 1.8 made of elastic material can be provided between the bottom 10 of the housing insert 6 and between the bottom 17 of the main body 2 to support and fix the housing insert 6. Since such a material also has a high internal damping, the support sound cannot be transmitted from the floor 10 to the main body 2. Rather, additional cushioning of this impact sound occurs through the support cushion 18.

Claims

P A T E N T A N S P R Ü C H EP A T E N T A N S P R Ü C H E
1) Einschlaggerät für Befestigungsmittel mit den Merkmalen:1) Wrapping device for fasteners with the features:
a) einem Gehäuse, in dessen topfförmigem Hauptkörper ein Schlagzylinder angeordnet ist,a) a housing, in the cup-shaped main body of which a striking cylinder is arranged,
b) einem im Schlagzylinder verschiebbar gelagerten Schlagkolben undb) a percussion piston slidably mounted in the percussion cylinder and
c) einem am einschlagseitigen Ende des Schlagzylinders angeordneten Schlagpuffer,c) an impact buffer arranged at the impact-side end of the impact cylinder,
d a d u r c h g e k e n n z e i c h n e t , daß zwischen dem Hauptkörper (2) und dem Schlagzylinder (12) ein Gehäuseeinsatz (6) angeordnet ist.that a housing insert (6) is arranged between the main body (2) and the percussion cylinder (12).
2) Einschlaggerät nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß der Schlagpuffer (11) auf dem Boden (10) des topfförmigen Gehäuseeinsatzes (6) aufliegt.2) impact device according to claim 1, so that the impact buffer (11) rests on the bottom (10) of the cup-shaped housing insert (6).
3) Einschlaggerät nach Anspruch 2, da d u r c h g e k e n n z e i c h n e t , daß der Gehäuseeinsatz (6) so im Hauptkörper (2) gelagert ist, daß er mindestens im Bereich des Schlagpuffers (11) die Innenwand des Hauptkörpers (2) nicht berührt.3) Wrapping device according to claim 2, since the housing insert (6) is mounted in the main body (2) in such a way that it does not touch the inner wall of the main body (2) at least in the area of the impact buffer (11).
4) Einschlaggerät nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , daß der Gehäuseeinsatz (6) aus einem Kunststoff mit hoher innerer Dämpfung besteht.4) Wrapping device according to one of claims 1 to 3, d a d u r c h g e k e n n z e i c h n e t that the housing insert (6) consists of a plastic with high internal damping.
5) Einschlaggerät nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , daß zwischen Boden (10) von Gehäuseeinsatz (6) und dem Boden (17) von Hauptkörper (2) ein Auflagekissen (18) aus elastischem Werkstoff angeordnet ist. 5) Wrapping device according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t that between the bottom (10) of the housing insert (6) and the bottom (17) of the main body (2) a support cushion (18) made of elastic material is arranged.
EP81900816A 1980-04-16 1981-04-02 Driving device for fastener means Expired EP0050122B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3014535A DE3014535C2 (en) 1980-04-16 1980-04-16 Impact device for fasteners
DE3014535 1980-04-16

Publications (2)

Publication Number Publication Date
EP0050122A1 true EP0050122A1 (en) 1982-04-28
EP0050122B1 EP0050122B1 (en) 1984-03-07

Family

ID=6100134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81900816A Expired EP0050122B1 (en) 1980-04-16 1981-04-02 Driving device for fastener means

Country Status (5)

Country Link
US (1) US4475680A (en)
EP (1) EP0050122B1 (en)
JP (1) JPH0133312B2 (en)
DE (1) DE3014535C2 (en)
WO (1) WO1981002992A1 (en)

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Publication number Priority date Publication date Assignee Title
US4932480A (en) * 1988-12-16 1990-06-12 Illinois Tool Works Inc. Driving tool with air-cooled bumper
JPH07156078A (en) * 1993-12-03 1995-06-20 Kanematsu Nnk Corp Fastener striking tool
US5799855A (en) * 1996-02-09 1998-09-01 Illinois Tool Works Inc. Velocity control and nosepiece stabilizer system for combustion powered tools
AU751720B2 (en) * 1998-09-18 2002-08-22 Stanley Fastening Systems, L.P. Multi-stroke fastening device
JP3818234B2 (en) * 2002-07-19 2006-09-06 日立工機株式会社 Nailer
FR2870770B1 (en) * 2004-05-27 2006-08-11 Prospection Et D Inv S Techniq GAS FIXING APPARATUS WITH FRONT FLOATING HEATER MOUNTED HEAT ENGINE

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US2887686A (en) * 1956-04-16 1959-05-26 Fastener Corp Fastener driving apparatus
US3179185A (en) * 1962-06-14 1965-04-20 Chicago Pneumatic Tool Co Demolition tool with shock attenuating means
US3434643A (en) * 1966-05-02 1969-03-25 Fastener Corp Fastener driving apparatus
US3567098A (en) * 1966-12-23 1971-03-02 Bostitch Div Of Textron Fastener driving apparatus operable under pressure conditions greater than line pressure
US3496840A (en) * 1968-01-29 1970-02-24 Fastener Corp Fastener driving apparatus
US3504840A (en) * 1968-02-28 1970-04-07 Fastener Corp Fastener driving tool
US3565351A (en) * 1968-11-14 1971-02-23 Thorvald S Ross Jr Impactor
US3559753A (en) * 1969-05-21 1971-02-02 Ilmar Meri Percussion tool
US3871566A (en) * 1972-07-25 1975-03-18 Behrens Friedrich Joh Fastener driver tools
DE2339163C2 (en) * 1973-08-02 1975-01-30 Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen Impact buffer for impact devices
DE2504094C2 (en) * 1975-01-31 1985-03-21 Signode Corp., Glenview, Ill. Catching device for the percussion piston of a pneumatically operated driving tool
DE2510858A1 (en) * 1975-03-12 1976-09-30 Signode Corp DEVICE FOR INTERRUPTION OF THE PISTON OF A PNEUMATICALLY OPERATED DRIVING TOOL
DE2618596C2 (en) * 1976-04-28 1984-05-17 Robert Bosch Gmbh, 7000 Stuttgart Tool holder
FR2388646A1 (en) * 1977-04-29 1978-11-24 Maco Meudon Sa Sound insulated pneumatic concrete breaker - has plastics cylinder head and tool hood and tubular casing for exhaust flows
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Title
See references of WO8102992A1 *

Also Published As

Publication number Publication date
DE3014535A1 (en) 1981-10-22
JPH0133312B2 (en) 1989-07-12
US4475680A (en) 1984-10-09
WO1981002992A1 (en) 1981-10-29
JPS57500466A (en) 1982-03-18
EP0050122B1 (en) 1984-03-07
DE3014535C2 (en) 1984-11-08

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