EP3823791B1 - Druckluftbetriebene austreibvorrichtung - Google Patents

Druckluftbetriebene austreibvorrichtung Download PDF

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Publication number
EP3823791B1
EP3823791B1 EP19752426.7A EP19752426A EP3823791B1 EP 3823791 B1 EP3823791 B1 EP 3823791B1 EP 19752426 A EP19752426 A EP 19752426A EP 3823791 B1 EP3823791 B1 EP 3823791B1
Authority
EP
European Patent Office
Prior art keywords
compression chamber
compressed air
filling
drive
piston
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.)
Active
Application number
EP19752426.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3823791C0 (de
EP3823791A1 (de
Inventor
Werner Ruecklinger
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.)
Prebena Wilfried Bornemann GmbH and Co KG
Original Assignee
Prebena Wilfried Bornemann GmbH and Co KG
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 Prebena Wilfried Bornemann GmbH and Co KG filed Critical Prebena Wilfried Bornemann GmbH and Co KG
Publication of EP3823791A1 publication Critical patent/EP3823791A1/de
Application granted granted Critical
Publication of EP3823791C0 publication Critical patent/EP3823791C0/de
Publication of EP3823791B1 publication Critical patent/EP3823791B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25C1/042—Main valve and main cylinder
    • 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
    • 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
    • B25C1/043—Trigger valve and trigger mechanism
    • 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
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the present invention relates to a compressed air-operated ejection device for ejecting objects or fluid substances from a reservoir by means of a drive piston that can be acted upon by a gas volume that can be compressed in a compression chamber, the drive piston being provided with a drive device for compressing the gas volume and with a release device for expanding the compressed gas volume .
  • Compressed air-operated ejection devices of the type mentioned at the outset use the gas volume compressed by the upward movement of the drive piston as a gas pressure spring to generate an ejection force that acts on the objects to be ejected.
  • a driving device according to the preamble of claim 1 is from US2018/126527 A1 known and another expelling device is from EP 2 243 600 B1 known in which the compression chamber is filled with a gas volume that is constant over the life of the expulsion device. Therefore, such ejection devices are filled once with a volume of gas during factory assembly, which has a filling pressure that is designed according to the piston geometry for the desired ejection force and is usually in the order of about 8 bar.
  • the associated temperature changes in the compressed air stored in the compression chamber lead to the formation of condensate, since the water vapor contained in the compressed air decreases when the compressed air cools or when the saturation vapor pressure is increased due to the compression of the compressed air is exceeded, condenses out.
  • the present invention is therefore based on the object of proposing a compressed air-operated ejection device which has a comparatively longer service life and in particular enables the ejection device to be repaired by engaging in the compression chamber.
  • the driving device according to the invention has the features of claim 1.
  • the compression chamber is equipped with a venting device for temporary venting Compression chamber and provided with a filling device for filling the vented compression chamber with compressed air.
  • Equipping the compression chamber with a venting device and a filling device enables the user to empty the compression chamber at a time that he himself determines and, if necessary, to refill it with compressed air.
  • the compressed air volume contained in the compression chamber can be exchanged, for example depending on a defined number of expulsion processes, in order to dispose of condensate that has formed in the compression chamber in the meantime through the venting device.
  • the compressed air contained in the compression chamber can easily be replaced during the life cycle of the expulsion device due to the design of the expulsion device according to the invention, repairs can also be carried out on the expulsion device that require intervention in the compression chamber, such as replacing the piston with the drive piston associated ejector ram or an exchange of the driving piston itself. Re-commissioning the ejector is easily possible because after a repair or replacement of device components by means of the filling device, the compression chamber can be refilled with compressed air.
  • the compression device or the filling device is provided with a pressure indicator that allows the operator to end the filling process when the desired filling pressure in the compression comb is displayed.
  • the compression chamber can also be provided with a preferably adjustable pressure relief valve to end the filling process.
  • a re-filling of the compression chamber of the expulsion device with compressed air can be done particularly easily because the Filling device has a connection device connected to the compression chamber for connection to an in particular device-independent compressed air source.
  • a compressed air source can in particular be a mains connection for connecting the compression chamber of the expulsion device to a mains-dependent compressed air source or also a connection device which enables connection to a mobile compressor device.
  • the compressed air source is configured as a compressed air cartridge connected to the connection device in an exchangeable manner, since this allows the compression chamber to be filled with compressed air independently of the mains without having to provide a compressed air compressor. Rather, a compressed air cylinder that can easily be carried along by the user during operation of the expulsion device can be used, so that in particular the logistical outlay for providing the possibility of refilling the compression chamber of the expulsion device is low.
  • the compressed air cylinder can be filled with high filling pressure to fill the compression chamber, particularly if a compressed air cylinder is used as the compressed air source, and can therefore be designed to be particularly small and therefore easy to carry.
  • the drive device has a rotary drive element which is in engagement with a linear drive element which is designed as an ejector ram, acts on the drive piston and is accommodated in a linear guide device, the drive device being detachably connected to a cylinder unit forming the compression chamber via a piston stop device.
  • the compression chamber can be opened not only for repair purposes and, after the compression chamber has been closed again, operation can resume the expelling device.
  • one component of the ejection device namely the piston stop device, can not only serve according to its original purpose for defining a stop for the ejection piston, but also as a connecting device between the linear guide device and the compression chamber.
  • expulsion device 10 which, on a housing 11 which is also designed here as a support structure and is provided with a handle 12, has as essential components an expulsion unit 13 and a magazine device 15 serving as a reservoir for objects 14 to be expelled, which is attached to an expulsion mouthpiece 16 of the Drive-out unit 13 is connected.
  • the ejection unit 13 has a driving piston 18 which is arranged in a cylinder unit 17 and is provided with an ejection ram 19 which is guided in a linear guide device 20 which at the same time forms a cylinder base 22 of the cylinder unit 17 which is provided with a ram opening 21 .
  • a piston stop device 24 is used, which has a lower stop position of the in 2 at its top dead center shown drive piston 18 forms.
  • a drive device 26 is connected to the linear guide device 20 of the expulsion unit 13, which comprises a rotary drive member 27 and a linear drive member 28 and which serves to move the driving piston 18 against the following a transfer of the driving piston 18 in the in the 2 and 3 bias shown top dead center compressed air volume.
  • the linear drive member 28 is formed in the illustrated embodiment by a lower part of the ejector ram 19, which is in an upward movement of the drive piston 18 in engagement with the rotary drive member 27.
  • the rotary drive member 27 has drivers designed as pins 29 which interact with teeth 30 designed on the linear drive member 28 .
  • the rotary drive member 27 is driven by a, as in 2 shown, driven by an electric motor 31 intermediate gear 32, wherein the power supply of the electric motor 31, a battery 33 is provided.
  • the rotary drive member 27 is not provided with pins 29 over its entire pitch circle 34, but has a segment 35 on its pitch circle 34, along which no engagement between the pins 29 and the toothing 30 of the linear drive member 28 takes place during a counterclockwise rotation .
  • a downward movement of the drive piston 18, starting from its top dead center, up to the stop against the piston stop device 24 is possible, with the result that the decompression of the volume of air compressed above the drive piston 18 in the compression chamber 23 takes place, the drive piston 18 accelerates downwards and a corresponding ejection force F via the ejection ram 19 acts on an object 14 arranged in the expulsion mouthpiece 16 .
  • the expulsion device 10 has a trigger 36 ( 2 ) on that with an in 2 pawl, not shown in detail, which the way of the ejector ram 19 from the in 3 shown position blocked down until the trigger 36 is actuated.
  • the compression chamber 23 is provided with a ventilation device 37, which in the present case can be actuated manually via a valve device 38 and releases a ventilation opening 40 formed in a chamber wall 39 of the compression chamber 23 for compressed air ventilation of the compression chamber 23.
  • a ventilation device 37 which in the present case can be actuated manually via a valve device 38 and releases a ventilation opening 40 formed in a chamber wall 39 of the compression chamber 23 for compressed air ventilation of the compression chamber 23.
  • the filling device 41 has a connection device 43 which is connected to the compression chamber 23 via a filling opening 42 and to which a compressed air cylinder 45 can be connected in an exchangeable manner via a filling valve 44 .
  • the compression chamber 23 is provided with a pressure indicator 47 for monitoring the filling pressure in the compression chamber 23 .
  • connection device 43 is provided with a pressure reducing device 46, so that the compressed air cylinder 45, which preferably has a filling pressure of 300 bar, can be connected via the filling valve 44 and the pressure reducing device 46, which is preferably designed to be adjustable, is suitable for filling the compression chamber 23 A filling pressure of about 23 bar can be set.
  • the expulsion device 10 or the housing 11 of the expulsion device 10 is designed in the present case in such a way that operation of the expulsion device 10, which requires the battery 33 to be connected to the electric motor 31, is only possible if no compressed air cylinder 45 is available Refilling of the compression chamber 23 is connected to the filling valve 44, since the space required for the arrangement of the battery 33 on the housing 11 is blocked by the compressed air cylinder 45.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Coating Apparatus (AREA)
  • Reciprocating Pumps (AREA)
EP19752426.7A 2018-07-19 2019-07-18 Druckluftbetriebene austreibvorrichtung Active EP3823791B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018117519.1A DE102018117519A1 (de) 2018-07-19 2018-07-19 Druckluftbetriebene Austreibvorrichtung
PCT/EP2019/069439 WO2020016383A1 (de) 2018-07-19 2019-07-18 Druckluftbetriebene austreibvorrichtung

Publications (3)

Publication Number Publication Date
EP3823791A1 EP3823791A1 (de) 2021-05-26
EP3823791C0 EP3823791C0 (de) 2023-08-30
EP3823791B1 true EP3823791B1 (de) 2023-08-30

Family

ID=67587721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19752426.7A Active EP3823791B1 (de) 2018-07-19 2019-07-18 Druckluftbetriebene austreibvorrichtung

Country Status (13)

Country Link
US (1) US20210308849A1 (ko)
EP (1) EP3823791B1 (ko)
JP (1) JP7466212B2 (ko)
KR (1) KR102535434B1 (ko)
CN (1) CN112423937B (ko)
AU (1) AU2019306305B2 (ko)
CL (1) CL2021000128A1 (ko)
DE (1) DE102018117519A1 (ko)
ES (1) ES2964090T3 (ko)
PL (1) PL3823791T3 (ko)
TW (1) TW202012124A (ko)
UA (1) UA125202C2 (ko)
WO (1) WO2020016383A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220063074A1 (en) * 2020-08-26 2022-03-03 Robert Bosch Gmbh Gas Spring for a Fastener Driving Tool
US20240017387A1 (en) * 2022-07-15 2024-01-18 Kyocera Senco Industrial Tools, Inc. Microfastener driving tool with gas spring

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3654099B2 (ja) * 1999-12-03 2005-06-02 日立工機株式会社 打込機
US6786379B2 (en) * 2002-01-04 2004-09-07 Ilinois Tool Works Inc. Fastener driving tool having pressurized power source
DE202005003422U1 (de) * 2005-03-03 2005-05-19 Prebena Wilfried Bornemann Gmbh & Co. Kg Vorrichtung zur Anbringung an druckluftbetriebene Geräte
NZ584294A (en) 2007-10-05 2012-08-31 Senco Brands Inc Fastener driving tool using a gas spring
CN101712148B (zh) * 2008-09-30 2013-07-10 株式会社牧田 气动工具
JP2012187640A (ja) * 2009-07-24 2012-10-04 Makita Corp 打込み工具
US9174332B2 (en) * 2012-01-06 2015-11-03 Stanley Fastening Systems, L.P. Fastening tool having an interchangeable power source
WO2015037299A1 (ja) * 2013-09-10 2015-03-19 株式会社マキタ 打ち込み工具
EP2851157A1 (de) * 2013-09-19 2015-03-25 HILTI Aktiengesellschaft Eintreibvorrichtung mit pneumatischem Speicher
US20180036870A1 (en) * 2015-02-26 2018-02-08 Hitachi Koki Co., Ltd. Driving machine
WO2016174994A1 (ja) 2015-04-30 2016-11-03 日立工機株式会社 打込機
TWI751176B (zh) * 2016-08-31 2022-01-01 日商工機控股股份有限公司 打釘機、壓力調節器和打釘單元
CA2985043C (en) * 2016-11-09 2023-03-14 Tti (Macao Commercial Offshore) Limited Cylinder assembly for gas spring fastener driver

Also Published As

Publication number Publication date
KR102535434B1 (ko) 2023-05-26
JP7466212B2 (ja) 2024-04-12
DE102018117519A1 (de) 2020-01-23
AU2019306305A1 (en) 2021-01-28
EP3823791C0 (de) 2023-08-30
US20210308849A1 (en) 2021-10-07
KR20210032959A (ko) 2021-03-25
CL2021000128A1 (es) 2021-08-20
ES2964090T3 (es) 2024-04-04
TW202012124A (zh) 2020-04-01
AU2019306305B2 (en) 2022-04-14
PL3823791T3 (pl) 2024-02-26
EP3823791A1 (de) 2021-05-26
CN112423937B (zh) 2024-05-17
JP2021531182A (ja) 2021-11-18
UA125202C2 (uk) 2022-01-26
CN112423937A (zh) 2021-02-26
WO2020016383A1 (de) 2020-01-23

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