EP0826464B1 - Outil de scellement actionné par poudre avec des moyens de rappel du piston - Google Patents

Outil de scellement actionné par poudre avec des moyens de rappel du piston Download PDF

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Publication number
EP0826464B1
EP0826464B1 EP97810579A EP97810579A EP0826464B1 EP 0826464 B1 EP0826464 B1 EP 0826464B1 EP 97810579 A EP97810579 A EP 97810579A EP 97810579 A EP97810579 A EP 97810579A EP 0826464 B1 EP0826464 B1 EP 0826464B1
Authority
EP
European Patent Office
Prior art keywords
fastener tool
moulding
tool according
piston
piston guide
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
EP97810579A
Other languages
German (de)
English (en)
Other versions
EP0826464A1 (fr
Inventor
Michael Melocco
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0826464A1 publication Critical patent/EP0826464A1/fr
Application granted granted Critical
Publication of EP0826464B1 publication Critical patent/EP0826464B1/fr
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
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil

Definitions

  • the invention relates to a setting tool according to the preamble of patent claim 1.
  • From DE-OS 1 939 801 is a powder-operated setting tool for driving in known nail-shaped fasteners in an underground, the driving piston by means of an elastic sleeve after a driving-in process into its starting position is pushed back. Moving the driving piston back causes an elastic sleeve surrounding the shaft of the driving piston, which extends from a stop of the piston guide pointing against the setting direction up to one extends end face of the head part of the driving piston.
  • the large diameter difference between the outer diameter of the restoring element and the inside diameter of the piston guide is an indication that the Sleeve of this setting tool is formed from a material with high transverse expansion.
  • the largest possible axial spring travel of the restoring element and the associated The greatest axial displacement of the driving piston depends on the size of the hollow cylindrical volume of the space between the restoring element and the inner wall of the piston guide.
  • the sleeve known from DE-OS 1 939 801 can be due to its elastic Squeeze properties to a maximum of half the length of the original length.
  • an enlargement is necessary of the hollow cylindrical volume is necessary.
  • This volume can are influenced by an enlargement of the guide bore of the piston guide in the radial direction, i.e. an increase in the space between the return element and the inner wall of the piston guide.
  • this has the major disadvantage that the size of the setting tool increases very sharply and thus becomes one Unhandiness of the setting tool leads.
  • rubber as a material for the elastic sleeve used then this relatively long sleeve has a high Dead weight on.
  • the high weight of the sleeve has a negative impact on that Total weight of the setting tool and creates a top heaviness of the setting tool.
  • the invention is based, to be actuated by means of high-tension gases the task To create setting tool that is economically producible, one that works reliably, one has a long life piston guide for the driving piston and itself characterized by a compact design and good handling.
  • the restoring element according to the invention can achieve a compression path which corresponds to up to 80% of the initial length of the molded part. This enables the manufacture of setting tools with a compact design.
  • pressure is applied, the volume of the individual cells of the predominantly closed cell structure is compressed and then the material itself.
  • the maximum compression depends on the bulk density of the molded part.
  • the bulk density can be 350 kg / m 3 to 650 kg / m 3 and the volume of all cells or pores 50% to 63%.
  • Forming element is expediently formed from a polyurethane elastomer.
  • the cell structure of the molded part according to the invention is produced, for example by means of a foaming process.
  • the individual cells or pores of this cell structure preferably have a diameter of at most 0.5 mm.
  • Molded part advantageously has at least one circumferentially shaped groove.
  • the Arrangement of a shaped groove causes a reduction in the cross section and thus one lower axial strength of the molded part in the area of the molded groove. As a consequence, that the molded part is first compressed axially in the area of a molded groove.
  • the molded part can have, for example, a plurality of shaped grooves which either overlap extend the entire length of the molded part or at least one of the end regions or the center are concentrated.
  • the distance between the grooves from each other, as well as the depth of the grooves and the extent of the grooves in The longitudinal direction of the molded part can, for example, be constant or irregular.
  • the shape groove is preferably in a perpendicular to the Longitudinal axis of the molded part is arranged and which is located in a cross-section of the plane extending through the longitudinal axis of the molded part
  • Form groove is essentially V-shaped.
  • the end faces of the molded part are exposed to high mechanical loads. High ones act in particular on the end face facing the driving piston Temperatures.
  • To ensure appropriate protection of the molded part can advantageously be a support disc on at least one end face of the molded part arranged.
  • the molded part prefferably be coaxial with respect to the piston guide to align by placing a support washer on both ends of the molded part is arranged, the outer diameter of which is essentially the inner diameter of the Piston guide corresponds. In this case, too, there is a positive interlocking of molded part and support washers necessary.
  • the supporting disc is expediently made of rubber.
  • the outer diameter of the molded part is made smaller than the inside diameter of the piston guide.
  • the outside diameter of the molded part corresponds in the initial length of the molded part, preferably 0.65 times to 0.98 times Inner diameter of the piston guide.
  • the powder-powered setting tool shown in FIG. 1 has a housing 1, a integrally connected to the housing 1 handle 5 and the housing 1 and Handle 5 penetrating, strip-shaped cartridge magazine 2 with several Cartridges 3 on.
  • an actuation switch 4 is arranged, the triggering a, not shown Ignition mechanism is used.
  • the end region of the housing 1 on the setting direction is surmounted by a pin guide 6, which together with one of the pin guide 6 subsequent piston guide 7 with respect to the housing 1 axially in a shown pressing is displaceable.
  • the piston guide 7 shown in FIGS. 1 and 2 has a central, cylindrical Guide bore 20, which is parallel to the longitudinal extension of the piston guide 7 runs.
  • a cartridge bearing 13 is in an opposite direction to the setting direction End region of the piston guide 7 is arranged and stands over a connecting channel 19 in direct connection with the guide bore 20.
  • a driving of fasteners, not shown, into one as well Driving piston 21, not shown, serves a head part 9 and a Shank 8, the substantially the inner diameter of the guide bore 20 corresponding outer diameter of the head part 9 of the driving piston 21 is larger than the diameter of the shaft 8.
  • the guide bore 20 serves to guide the Head part 9 when axially displacing the driving piston 21.
  • the guide bore 20 has a stop 17 in the form of an annular Surface facing away from the setting direction and the support of the Head part 9 of the driving piston 21 with the interposition of a restoring element in the form a molded part 11 is used.
  • a vent hole 10 which is the venting of the setting direction Part of the guide bore 20 is used when the driving piston 21 during the setting process is accelerated in the setting direction.
  • the shaft 8 of the driving piston 21 is in a central bore 23 of the piston guide 7 guided in the end area on the setting direction.
  • This central bore 23 runs to Guide bore 20 of the piston guide and to a central through bore 22 the bolt guide 6 coaxial.
  • the diameter of the through hole 22 corresponds to essentially the diameter of the central bore 23 of the piston guide 7.
  • the central bore 23 extends essentially along an outside diameter reduced part of the piston guide 7 by an expanded part of the Bolt guide 6 is surrounded.
  • the driving piston 21 is in its initial position.
  • the relaxed one Initial length of the molded part 11 corresponds essentially to the distance between the stop 17 of the piston guide 21 and the end face 18 of the setting direction Head part 9 minus the height of both support disks 14, 15.
  • the molded part 11 has several circumferentially shaped grooves arranged at the same distance from each other 12 on. The distance between the individual shaped grooves 12 is for example 8mm to 20mm.
  • the cross section of the shaped grooves 12 is essentially V-shaped. Compared to the inner wall 16 of the guide bore 20, the molded part 11 and the two supporting disks 14, 15 have a smaller outside diameter.
  • FIG. 3 shows the driving piston 21 in the working position.
  • the shaft 8 of the driving piston 21 projects beyond the end face of the bolt guide 6 on the setting direction side.
  • the mold plate 11 is compressed to 20% of its initial length.
  • the molded part 11 formed from a predominantly closed cell structure the cells are compressed and the material is radially deformed in such a way that the outer diameter of the compressed molded part 11 corresponds to the inner diameter of the guide bore 20 of the piston guide 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (9)

  1. Outil de scellement pouvant être actionné au moyen de gaz à haute pression, avec un guide-piston (7), avec un piston-poussoir (21) déplaçable axialement dans le guide-piston (7) et comportant une tige (8) et une partie de tête (9), ainsi qu'avec un élément de rappel entourant la tige (8) et disposé entre une butée (17) du guide-piston (7) orientée à l'opposé de la direction de scellement et la face frontale (18), côté direction de scellement, de la partie de tête (9), caractérisé en ce que l'élément de rappel est formé par une pièce moulée expansée (11) présentant une structure alvéolaire fermée.
  2. Outil de scellement selon la revendication 1, caractérisé en ce que la pièce moulée (11) est formée d'élastomère polyuréthanne.
  3. Outil de scellement selon la revendication 1 ou 2, caractérisé en ce que le diamètre des alvéoles individuels de la structure alvéolaire de la pièce moulée (11) est au plus de 0,5 mm.
  4. Outil de scellement selon une des revendications 1 à 3, caractérisé en ce que la pièce moulée (11) comporte au moins une rainure moulée périphérique (12).
  5. Outil de scellement selon la revendication 4, caractérisé en ce que la rainure moulée est disposée dans un plan s'étendant perpendiculairement à l'axe longitudinal de la pièce moulée (11), et en ce que la section transversale de la rainure moulée (12) s'étendant dans un plan passant par l'axe longitudinal de la pièce moulée (11) est sensiblement en forme de V.
  6. Outil de scellement selon une des revendications 1 à 5, caractérisé en ce qu'un disque d'appui (14, 15) est disposé contre au moins une face frontale de la pièce moulée (11).
  7. Outil de scellement selon la revendication 6, caractérisé en ce que la pièce moulée (11) et le disque d'appui (14, 15) s'emboítent mutuellement par complémentarité de formes.
  8. Outil de scellement selon la revendication 6 ou 7, caractérisé en ce que le disque d'appui (14, 15) est formé de caoutchouc.
  9. Outil de scellement selon une des revendications 1 à 8, caractérisé en ce que le diamètre extérieur dans la position initiale de la pièce moulée (11) correspond à 0,65 à 0,98 fois le diamètre intérieur du guide-piston (7).
EP97810579A 1996-09-02 1997-08-19 Outil de scellement actionné par poudre avec des moyens de rappel du piston Expired - Lifetime EP0826464B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19635312A DE19635312A1 (de) 1996-09-02 1996-09-02 Setzgerät
DE19635312 1996-09-02

Publications (2)

Publication Number Publication Date
EP0826464A1 EP0826464A1 (fr) 1998-03-04
EP0826464B1 true EP0826464B1 (fr) 2003-10-15

Family

ID=7804244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810579A Expired - Lifetime EP0826464B1 (fr) 1996-09-02 1997-08-19 Outil de scellement actionné par poudre avec des moyens de rappel du piston

Country Status (9)

Country Link
US (1) US5901894A (fr)
EP (1) EP0826464B1 (fr)
JP (1) JPH1080876A (fr)
KR (1) KR100291231B1 (fr)
CN (1) CN1067318C (fr)
AT (1) ATE251972T1 (fr)
CA (1) CA2213905C (fr)
DE (2) DE19635312A1 (fr)
TW (1) TW340084B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638341A1 (de) * 1996-09-19 1998-03-26 Adolf Wuerth Gmbh & Co Kg Bolzenschubgerät und Feder dafür
DE19755730A1 (de) * 1997-12-15 1999-06-17 Hilti Ag Bolzensetzgerät
PL185374B1 (pl) * 1998-01-19 2003-04-30 Lagodzinska Boguslawa Samorepetujący osadzak wybuchowy
AUPP247798A0 (en) 1998-03-18 1998-04-23 Rudduck, Dickory Fixing and release systems
AUPQ861300A0 (en) * 2000-07-06 2000-08-03 Telezygology Pty Limited Mulit-function tool
US6705409B2 (en) 2001-03-22 2004-03-16 Chicago Pneumatic Tool Company Reciprocating tool having a piston retaining system
US7600301B2 (en) * 2002-06-19 2009-10-13 Telezygology, Inc. Fixing and release systems and fastener networks
TW542075U (en) * 2002-11-18 2003-07-11 Chen Shiou Ru Damping apparatus for pneumatic tool
US20060144605A1 (en) * 2003-11-06 2006-07-06 Hsiu-Ju Chen Shock-absorbing structure for pneumatic tool
DE10358576A1 (de) * 2003-12-15 2005-07-28 Hilti Ag Brennkraftbetriebenes Setzgerät
DE10358578A1 (de) * 2003-12-15 2005-07-14 Hilti Ag Brennkraftbetriebenes Setzgerät
US20070215370A1 (en) * 2006-03-01 2007-09-20 Basso Industry Corp. Shock-Absorbing Structure for Pneumatic Tool
DE102008010100A1 (de) * 2008-02-20 2009-08-27 Robert Bosch Gmbh Handwerkzeugmaschine
US10926389B2 (en) * 2018-07-31 2021-02-23 Chung-Heng Lee Powder-actuated tool
GB2581155A (en) * 2019-02-05 2020-08-12 Accles & Shelvoke Ltd Device for use in the humane slaughter of animals

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US3126630A (en) * 1964-03-31 T catlin
US2893279A (en) * 1957-10-18 1959-07-07 Remington Arms Co Inc Cartridge-powered impact tool
CH355111A (fr) * 1957-11-29 1961-06-15 Termet Pierre Pistolet pour enfoncer une cheville dans un matériau
DE1478819A1 (de) * 1963-09-04 1969-07-17 Herbert Behrend Geraet zum Einstanzen von Bolzen od.dgl.
US3301335A (en) * 1964-04-20 1967-01-31 Thomas E Snelling Energy absorbing structure
US3331546A (en) * 1965-06-01 1967-07-18 Olin Mathieson Piston return and buffer system
FR1600417A (fr) * 1968-08-05 1970-07-27
DE1908735A1 (de) * 1969-02-21 1970-08-27 Tornado Gmbh Geraet zum Eintreiben von Bolzen od.dgl.
DE2339163C2 (de) * 1973-08-02 1975-01-30 Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen Schlagpuffer für Einschlaggeräte
FR2350176A1 (fr) * 1976-05-06 1977-12-02 Termet Pierre Appareil actionne par une charge de poudre
DE2632413A1 (de) * 1976-07-19 1978-01-26 Hilti Ag Pulverkraftbetriebenes bolzensetzgeraet mit einer abfangvorrichtung fuer den treibkolben
FR2608493B1 (fr) * 1986-12-23 1994-09-02 Prospection & Inventions Appareil de scellement a tir indirect
DE3924620A1 (de) * 1989-07-26 1991-01-31 Hilti Ag Pulverkraftbetriebenes bolzensetzgeraet
DE4236040A1 (de) * 1992-10-24 1994-04-28 Elastogran Gmbh Stoßdämpfer
DE19509763A1 (de) * 1995-03-17 1996-09-19 Adolf Wuerth Gmbh & Co Kg Bolzensetzgerät

Also Published As

Publication number Publication date
DE59710855D1 (de) 2003-11-20
CA2213905C (fr) 2002-01-15
US5901894A (en) 1999-05-11
CN1067318C (zh) 2001-06-20
KR100291231B1 (ko) 2001-06-01
CN1176164A (zh) 1998-03-18
JPH1080876A (ja) 1998-03-31
CA2213905A1 (fr) 1998-03-02
KR19980024212A (ko) 1998-07-06
EP0826464A1 (fr) 1998-03-04
DE19635312A1 (de) 1998-03-05
ATE251972T1 (de) 2003-11-15
TW340084B (en) 1998-09-11

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