EP1013381B1 - Pulverkraftbetriebenes Setzgerät - Google Patents
Pulverkraftbetriebenes Setzgerät Download PDFInfo
- Publication number
- EP1013381B1 EP1013381B1 EP99811162A EP99811162A EP1013381B1 EP 1013381 B1 EP1013381 B1 EP 1013381B1 EP 99811162 A EP99811162 A EP 99811162A EP 99811162 A EP99811162 A EP 99811162A EP 1013381 B1 EP1013381 B1 EP 1013381B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- face
- driving tool
- effective face
- carrier
- fastener driving
- 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
Links
- 239000003380 propellant Substances 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
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
-
- 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
- B25C1/082—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet
Definitions
- the invention relates to a powder-operated setting tool according to the preamble of Claim 1.
- the cartridges containing propellant are drivable.
- a setting tool is known for example from FR-1 355 370.
- This setting tool has a driving piston and a one in a guide cylinder Cartridge having carrier.
- the driving piston is located in a running bore of the guide cylinder and is parallel can be moved to the setting direction.
- the carrier is in a direction opposite to the setting direction End region of the guide cylinder arranged and connected to the guide cylinder.
- the carrier has a first effective area, which by a is formed in the setting direction of the end face of the carrier. From that first A cylindrical projection protrudes centrally from the active surface. This lead is one also provided in the setting direction of the second active surface.
- the driving piston has an end region pointing in the opposite direction to the setting direction Well, which is open against the setting direction and in which Protrusion of the wearer can penetrate. Since the outer diameter of the projection in corresponds essentially to the inside diameter of the recess, when igniting one Cartridge makes an abrupt transition to an after an initial high acceleration little acceleration when the protrusion leaves the recess. Through this abrupt transition there is a sudden drop in pressure in the combustion chamber, so that the blowing agent can no longer burn completely. This incomplete Combustion leads to excessive contamination of the setting tool.
- the invention has for its object to a powder-powered setting tool create, in order to completely burn the propellant Driving piston after high pressure in the beginning of a cartridge experiences that changes substantially evenly into a low acceleration, so the pressure drop in the combustion chamber does not occur suddenly.
- connection channel With the aid of the connection channel according to the invention, acceleration takes place even before or shortly after accelerating the driving piston in the setting direction, part of the Ignition of a cartridge creates propellant gases to the first active surface of the wearer derived. With increasing displacement of the driving piston in the setting direction, the Propellants and thus the pressure generated by the propellants on the first active surface to distribute. The pressure drop in the recess of the driving piston takes place slowly, as soon as the protrusion of the wearer leaves the depression.
- the connecting channel advantageously extends for manufacturing reasons at least partially over the circumference of the cylindrical projection and over the entire length of the projection.
- a particularly good and complete combustion of the powdery propellant is achieved when the cross-sectional area of the connecting channel is preferably from 0.04 to 0.5 times the cross-sectional area of the first effective area, reduced by the second effective area, equivalent.
- the guide cylinder 1 shown in the drawing is part of a whole shown powder-powered setting tool and has a central bore 2 in which a driving piston 6 is axially displaceable.
- the guide cylinder 1 is in a housing of the setting tool, not shown, can be moved parallel to the setting direction arranged and has a connecting bore 2 with the atmosphere Outflow channel 9.
- This carrier 3 has one cartridge receptacle 10 widening counter to the setting direction. From one in The first effective surface 4 pointing in the direction of setting projects from a centrally arranged cylindrical one Projection 11 with the diameter D1 and a second pointing in the setting direction Effective area 5. In this second effective area 5 there is a mouth Connecting bore 15 which connects the cartridge receptacle 10 with the barrel bore 2 combines.
- the driving piston 6 is composed of a head 8 and a shaft 7 adjoining the head 8 in the setting direction, the diameter of which is smaller than the diameter of the head 8.
- the diameter of the head 8 essentially corresponds to the diameter D of the barrel bore 2
- a cylindrical recess 12 with the inside diameter D2 extends in the head 8 from a free end of the driving piston 6 pointing against the setting direction - a stop surface 13.
- the projection 11 of the carrier 3 projects into this recess 12.
- the length L1 of the projection 11 measured parallel to the setting direction corresponds to 0.5 to 0.9 times the depth L2 of the recess 12.
- the recess 12 is adjacent, for example tapering bottom area that tapers in the setting direction.
- a connecting channel 14 extends in the form of an annular gap from the second active surface 5 to the first active surface 4 of the carrier 3.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Description
Zwischen der Aussenkontur des Vorsprunges 11 des Trägers 3 und der Innenkontur der Vertiefung 12 erstreckt sich ein Verbindungskanal 14 in Form eines Ringspaltes von der zweiten Wirkfläche 5 bis zur ersten Wirkfläche 4 des Trägers 3.
Claims (5)
- Pulverkraftbetriebenes Setzgerät mit einem in einer Laufbohrung (2) eines Führungszylinders (1) versetzbar angeordneten Treibkolben (6) und einem mit dem Führungszylinder (1) verbundenen Träger (3), der an einem entgegen der Setzrichtung weisenden Endbereich eine Kartuschenaufnahme (10) sowie an einem in Setzrichtung weisenden Endbereich eine erste Wirkfläche (4) aufweist, von der ein zylindrischer Vorsprung (11) abragt, dessen setzrichtungsseitige Stirnseite eine zweite Wirkfläche (5) bildet und der Treibkolben (6) eine mit der ersten Wirkfläche (4) zusammenwirkbare Anschlagfläche (13) aufweist, von der aus sich in Setzrichtung eine den zylindrischen Vorsprung (11) des Trägers (3) aufnehmende zylindrische Vertiefung (12) erstreckt, dadurch gekennzeichnet, dass die zweite Wirkfläche (5) mit der ersten Wirkfläche (4) über einen Verbindungskanal (14) in Verbindung steht.
- Setzgerät nach Anspruch 1, dadurch gekennzeichnet, dass sich der Verbindungskanal (14) wenigstens teilweise über den Umfang des zylindrischen Vorsprungs (11) und über die gesamte Länge (L1) des Vorsprungs (11) erstreckt.
- Setzgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Verbindungskanal (14) von einem Ringspalt zwischen der Aussenkontur des zylindrischen Vorsprungs (11) und der Innenkontur der zylindrischen Vertiefung (12) gebildet ist.
- Setzgerät nach Anspruch 3, dadurch gekennzeichnet, dass die Querschnittsfläche des Verbindungskanals (14) der 0,04 bis 0,5-fachen Querschnittsfläche der ersten Wirkfläche (4), reduziert um die zweite Wirkfläche (5), entspricht.
- Setzgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Länge (L1) des zylindrischen Vorsprungs (11) der 0,5 bis 0,9-fachen Tiefe (L2) der zylindrischen Vertiefung (12) entspricht.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19860194 | 1998-12-24 | ||
| DE19860194A DE19860194A1 (de) | 1998-12-24 | 1998-12-24 | Pulverkraftbetriebenes Setzgerät |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1013381A2 EP1013381A2 (de) | 2000-06-28 |
| EP1013381A3 EP1013381A3 (de) | 2000-07-26 |
| EP1013381B1 true EP1013381B1 (de) | 2003-09-24 |
Family
ID=7892749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99811162A Expired - Lifetime EP1013381B1 (de) | 1998-12-24 | 1999-12-15 | Pulverkraftbetriebenes Setzgerät |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6289789B1 (de) |
| EP (1) | EP1013381B1 (de) |
| JP (1) | JP2000210881A (de) |
| AU (1) | AU756123B2 (de) |
| CA (1) | CA2292060C (de) |
| DE (2) | DE19860194A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10103893A1 (de) * | 2001-01-30 | 2002-08-01 | Hilti Ag | Setzgerät |
| AUPR857501A0 (en) * | 2001-10-30 | 2001-11-29 | Cetram Pty Limited | Fastener driving tools |
| DE10164202A1 (de) * | 2001-12-27 | 2003-07-17 | Hilti Ag | Kolben für Setzgeräte |
| WO2006026709A2 (en) | 2004-08-30 | 2006-03-09 | Black & Decker Inc. | Combustion fastener |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1355370A (fr) * | 1962-05-07 | 1964-03-13 | Impex Essen Vertrieb | Appareil destiné à l'enfoncement de chevilles dans des éléments de construction fixes ou autres |
| DE1502154A1 (de) * | 1963-09-03 | 1969-06-12 | Dynamit Nobel Ag | Verfahren zum Abflachen der Spitzendrucke in einem Kolbenantrieb |
| DE1806568A1 (de) * | 1968-11-02 | 1970-05-27 | Tornado Gmbh | Geraet zum Eintreiben von Bolzen in Werkstuecke |
| US6059162A (en) * | 1998-10-16 | 2000-05-09 | Illinois Tool Works Inc. | Exhaust baffle and spring assisted reset and dampener for powder actuated tool |
-
1998
- 1998-12-24 DE DE19860194A patent/DE19860194A1/de not_active Withdrawn
-
1999
- 1999-11-17 AU AU59502/99A patent/AU756123B2/en not_active Expired
- 1999-12-09 CA CA002292060A patent/CA2292060C/en not_active Expired - Fee Related
- 1999-12-15 DE DE59907110T patent/DE59907110D1/de not_active Expired - Lifetime
- 1999-12-15 EP EP99811162A patent/EP1013381B1/de not_active Expired - Lifetime
- 1999-12-22 US US09/470,011 patent/US6289789B1/en not_active Expired - Lifetime
- 1999-12-22 JP JP11364350A patent/JP2000210881A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA2292060C (en) | 2006-04-11 |
| EP1013381A2 (de) | 2000-06-28 |
| AU5950299A (en) | 2000-06-29 |
| DE19860194A1 (de) | 2000-06-29 |
| AU756123B2 (en) | 2003-01-02 |
| EP1013381A3 (de) | 2000-07-26 |
| JP2000210881A (ja) | 2000-08-02 |
| CA2292060A1 (en) | 2000-06-24 |
| US6289789B1 (en) | 2001-09-18 |
| DE59907110D1 (de) | 2003-10-30 |
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