EP0054702B1 - Gerät zum dosierten Abgeben von Massen - Google Patents

Gerät zum dosierten Abgeben von Massen Download PDF

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Publication number
EP0054702B1
EP0054702B1 EP81109032A EP81109032A EP0054702B1 EP 0054702 B1 EP0054702 B1 EP 0054702B1 EP 81109032 A EP81109032 A EP 81109032A EP 81109032 A EP81109032 A EP 81109032A EP 0054702 B1 EP0054702 B1 EP 0054702B1
Authority
EP
European Patent Office
Prior art keywords
detent
feed
piston
piston rod
actuated
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
EP81109032A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0054702A1 (de
Inventor
Gusztav Dr. Lang
Achim Hirsemann
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
Priority to AT81109032T priority Critical patent/ATE8588T1/de
Publication of EP0054702A1 publication Critical patent/EP0054702A1/de
Application granted granted Critical
Publication of EP0054702B1 publication Critical patent/EP0054702B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/015—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with pneumatically or hydraulically actuated piston or the like

Definitions

  • the invention relates to a device for the metered dispensing of single- or multi-component adhesive, sealing, filling or filling compounds, with an axially displaceable squeeze-out piston which has a piston rod provided with tooth pegs of a certain pitch, one by means of a feed device by a certain stroke actuatable transport catch engaging in the toothed catches of the piston rod and a holding catch also engaging in the toothed catches of the piston rod.
  • the invention has for its object to provide a device that enables contamination-preventing delivery of mass.
  • this is achieved in that the distance measured parallel to the feed direction between the transport peg and the holding peg in the position after the transport peg is actuated is smaller than an integer multiple of the division of the tooth pegs.
  • the arrangement according to the invention prevents the retaining catch from engaging at the end of the transport stroke.
  • the squeeze-out piston can thus be pulled back a certain distance until the holding catch engages and the excess pressure in the cartridge can be reduced. This pressure reduction therefore takes place automatically after each piston stroke.
  • the stroke of the transport peg is adjustable.
  • the stroke is adjusted by one division of the tooth catches on the piston rod.
  • the stroke of the transport catch can be changed, for example, by adjusting a stop.
  • the path allowing the masses to relax is specified by determining the distance between the transport peg and the holding peg measured parallel to the feed direction when the transport peg is actuated.
  • the stroke and the distance between the transport peg and the holding peg when the transport peg is not actuated are thus always adjusted by the same amount. As a result, the distance between the transport peg and the holding peg remains constant when the transport peg is actuated.
  • the transport peg and the holding peg can in principle be designed as desired.
  • the transport catch and / or the holding catch can be designed as radially displaceable pawls which can be acted upon by a spring element. Due to the radial displaceability of the notches, the distance between the notches measured parallel to the feed direction is not changed when it is snapped in and out.
  • compression springs can be used as spring elements.
  • a radially resilient ring spring is particularly space-saving.
  • the pressure medium can be supplied, for example, from a compressed air network.
  • a compressed air network When using the device, for example in construction site operation, the independence of the device from supply networks is required.
  • the pressure medium is expediently contained in a cartridge arranged in the device.
  • compressed compressed air, CO 2 or another gas can be used as the pressure medium.
  • the cartridge can be integrated in the device or can be designed as a separate, replaceable part.
  • the device shown in FIG. 1 has a housing designated overall by 1.
  • the housing 1 consists of a rear part 1a and a front part 1b connected thereto.
  • the rear part 1a is connected to a laterally projecting handle 1c.
  • a cartridge Arranged in the front part 1b is a cartridge, designated overall by 2, for receiving the mass to be dispensed.
  • the cartridge 2 has a mouthpiece 2a and a displaceable base 2b.
  • a guide part, generally designated 3 is arranged in the rear part 1a.
  • the guide part 3 has a shaft 3a.
  • a squeezing piston, designated overall by 4 is guided.
  • the ejection piston 4 has a piston rod 4a which is provided with tooth catches 4b over part of its length.
  • the piston rod 4a also has two grooves 4c which are arranged opposite one another and extend over the entire length.
  • a radially displaceable holding catch 5 is arranged in the guide part 3.
  • the holding catch 5 is designed as a pawl and is pressed radially by an annular spring 6 against the piston rod 4a. The holding catch 5 prevents the squeezing piston 4 from retreating.
  • a cylinder 7 is arranged on the shaft 3a of the guide part 3.
  • a piston 8 is guided axially displaceably in the cylinder 7 and on the shaft 3a.
  • the piston 8 is sealed off from the shaft 3a and the cylinder 7 by two sealing rings 9, 10.
  • Two opposing transport pegs 11 are arranged in the piston 8.
  • the transport catches 11 protrude through slots 3b of the guide part 3 and are brought into engagement with the tooth catches 4b of the piston rod 4a by means of an annular spring 12.
  • a compression spring 13 brings the piston 8 into the starting position shown.
  • the cylinder 7 is axially displaceable on the shaft 3a. By moving the cylinder 7, the stroke of the piston 8 is changed.
  • a set screw 14, which can be loosened and tightened through an opening 1d in the housing 1, is used to lock the cylinder 7 in a specific position.
  • a cartridge 15 is arranged in the handle 1c.
  • the cartridge 15 contains a pressure medium, for example compressed air or CO 2 .
  • the cartridge 15 is held in the handle 1c by a cap, designated overall by 16, and a screw cap 17.
  • the closure cap 16 has a mandrel 16a and a head 16b protruding beyond the coupling screw.
  • the closure cap 16 is displaceable to a limited extent in the handle 1c and is sealed by a sealing ring 18. After inserting a new cartridge 15, this is opened by a blow on the projecting head 16b of the closure cap 16 through the mandrel 16a.
  • the closing cap 16 is then brought back into the position shown by the pressure medium flowing out.
  • the pressure medium enters the space surrounding the cartridge 15 and from there through a bore 1e to a pressure limiting valve.
  • the pressure relief valve consists of a slide, generally designated 19, a compression spring 20 and a locking screw 21.
  • the slide 19 is pressed to the left by the compression spring 20, so that a transverse bore 19a in the slide 19 comes to coincide with the bore 1e.
  • the pressure medium can thus flow through the bore 1e and the transverse bore 19a.
  • the slide 19 is acted upon by the pressure building up on the left side of the slide 19 and is thereby pressed against the compression spring 20. When the pressure has reached a certain value, the slide 19 is shifted to the right into the position shown and the bore 1e is closed.
  • the dispensing valve consists of a plunger, designated overall by 22, and a spring 23.
  • the plunger 22 is provided with an annular groove 22a.
  • the pressure medium can thus continue to flow and passes through a pipe 25 into the cylinder 7, where the piston 8 is acted upon and is displaced to the left against the force of the spring 13.
  • the ejection piston 4 together with the base 2b is likewise displaced to the left by the transport catches 11 which engage with the piston rod 4a, and a certain amount of mass is displaced from the cartridge 2 through the mouthpiece 2a.
  • the plunger 22 returns to the position shown.
  • the pressure medium still contained in the cylinder 7 arrives through a bore 22b and a vent 1g in the housing 1 to the outside.
  • the piston 8 can thus be returned to the starting position by the compression spring 13.
  • the squeeze-out piston 4 is likewise carried along until the retaining catch 5 engages in the next tooth catch 4b.
  • the partial retraction of the ejection piston 4 reduces the pressure in the cartridge 2 and prevents further mass flow out of the mouthpiece 2a.
  • the squeezing piston 4 When the cartridge 2 is completely squeezed out, the squeezing piston 4 is rotated through 90 °. The holding button 5 and the transport pegs 11 enter the groove 4c of the piston rod 4a. The squeeze-out piston 4 can then be pushed back into the rearmost starting position without hindrance. After replacing the cartridge 2 and turning the ejection piston 4 back by 90 °, the device is ready again.
  • the union screw 17 To replace the cartridge 15 containing the pressure medium, the union screw 17 must be unscrewed. In order to prevent the sealing cap 16 and the cap screw 17 from flying away due to any pressure that may still be present, the sealing ring 18 is disengaged from the sealing seat before the cap screw 17 is completely unscrewed. This means that the pressure that is still present can be safely reduced. After inserting a new cartridge 15, this is in turn opened by striking the head 16b of the closure cap 16.
  • the enlarged section shown in FIG. 2 shows, arranged at a distance from one another, the holding catch 5 and a transport catch 11.
  • the distance measured parallel to the feed direction is denoted by b.
  • the piston 8 When the piston 8 is actuated, it is moved together with the transport catch 11 by the stroke h relative to the guide part 3. After an empty travel 1, the piston rod 4a is also taken along.
  • the stroke h changes. However, only the free travel 1 changes for the time being.
  • a change in the advance of the piston rod 4a is only achieved when the free travel 1 becomes greater than a pitch t of the toothed catches 4b of the piston rod 4a. In practice, this means that the transport catch 11 comes into engagement with the next tooth catch 4b of the piston rod 4a.
  • Fig. 3 shows the position of the holding button 5 and the transport peg 11 when the transport peg 11 is actuated.
  • the distance a between the holding button 5 and the transport peg 11 is less than an integer multiple of the division t of the tooth pegs 4b.
  • the holding button 5 is therefore not yet fully engaged.
  • the piston rod 4b is taken along the path s until the holding peg 5 is engaged.
  • the partial retraction of the piston rod 4a causes the described pressure reduction in the cartridge 2.
  • the path s remains constant regardless of the adjustment of the stroke. The relaxation remains the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP81109032A 1980-12-22 1981-10-27 Gerät zum dosierten Abgeben von Massen Expired EP0054702B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109032T ATE8588T1 (de) 1980-12-22 1981-10-27 Geraet zum dosierten abgeben von massen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3048520 1980-12-22
DE19803048520 DE3048520A1 (de) 1980-12-22 1980-12-22 Geraet zum dosierten abgeben von massen

Publications (2)

Publication Number Publication Date
EP0054702A1 EP0054702A1 (de) 1982-06-30
EP0054702B1 true EP0054702B1 (de) 1984-07-25

Family

ID=6119982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109032A Expired EP0054702B1 (de) 1980-12-22 1981-10-27 Gerät zum dosierten Abgeben von Massen

Country Status (3)

Country Link
EP (1) EP0054702B1 (en, 2012)
AT (1) ATE8588T1 (en, 2012)
DE (1) DE3048520A1 (en, 2012)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378400B (de) * 1983-06-06 1985-07-25 Galac Ladislaus Fugenfuellpresse fuer pastoese einkomponenten-dicht- stoffe
FR2552056A1 (fr) * 1983-09-15 1985-03-22 Beyoux Noel Dispositif permettant de delivrer a la demande un materiau liquide ou pateux tel qu'un lubrifiant (huile, graisse...), de la colle, des matieres destinees a realiser des joints d'etancheite
GB8506010D0 (en) * 1985-03-08 1985-04-11 Ici Plc Extrusion apparatus
DE3514428A1 (de) * 1985-04-20 1986-10-23 Hilti Ag, Schaan Geraet zum auspressen von kartuschen
DE3765472D1 (de) * 1986-07-07 1990-11-15 Wilhelm A Keller Austraggeraet zur bedienung von kartuschen.
EP0463990B1 (de) * 1990-06-22 1994-07-20 Wilhelm A. Keller Elektrisch betriebenes Austraggerät
GB9200663D0 (en) * 1992-01-14 1992-03-11 Bba Group Plc Dispenser for viscous material and controller therefor
US5647515A (en) * 1995-09-29 1997-07-15 Zwijnenberg; Lambertus Herman Stepping plunger for air-activated dispensing system
DE19753146A1 (de) * 1997-11-29 1999-06-02 Adolf Wuerth Gmbh & Co Kg Ausgabegerät für Kartuschen
WO2000061489A1 (en) * 1999-04-08 2000-10-19 Crossflow International Limited Method and apparatus for dispensing viscous material
DE10213001A1 (de) * 2002-03-22 2003-10-09 Bruno Castellucci Vorrichtung zum Verfügen
PL1943026T3 (pl) * 2005-11-03 2011-08-31 Paoli Ambrosi Gianfranco De Urządzenie do dozowania dawek substancji płynnych o różnej lepkości i gęstości
DE102007041597B4 (de) * 2007-09-01 2009-11-12 Jost-Werke Gmbh Befüllsystem zum dosierten Ausbringen eines Schmierstoffs
DE102010019224B3 (de) * 2010-05-04 2011-10-13 Heraeus Medical Gmbh Austragsvorrichtung für pastöse Massen
DE102016212377A1 (de) * 2016-07-07 2018-01-11 Henkel Ag & Co. Kgaa Dosiervorrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818999A (en) * 1954-05-17 1958-01-07 Paul H Miller Gas-operated caulking gun
US2889085A (en) * 1955-07-19 1959-06-02 Harold B Collins Drive means for calking gun plungers
US3401847A (en) * 1967-04-03 1968-09-17 Thermon Mfg Co Pneumatically powered applicator
US3443725A (en) * 1967-10-24 1969-05-13 Charles L Lawhorn Pistol dispenser for fluent material
US3726440A (en) * 1970-12-21 1973-04-10 Speed Caulking Inc Caulking gun
DE7817873U1 (de) * 1978-06-15 1978-09-28 Teroson Gmbh, 6900 Heidelberg Pistole zur Verbindung mit Kartuschen
DE2949368A1 (de) * 1979-12-07 1981-06-11 Hilti AG, 9494 Schaan Geraet zum abgeben von ein- oder mehrkomponentenmassen

Also Published As

Publication number Publication date
ATE8588T1 (de) 1984-08-15
DE3048520A1 (de) 1982-07-22
DE3048520C2 (en, 2012) 1989-10-19
EP0054702A1 (de) 1982-06-30

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