EP0765720A2 - Pistolet pour mousse de polyuréthane ou produit similaire - Google Patents

Pistolet pour mousse de polyuréthane ou produit similaire Download PDF

Info

Publication number
EP0765720A2
EP0765720A2 EP96111275A EP96111275A EP0765720A2 EP 0765720 A2 EP0765720 A2 EP 0765720A2 EP 96111275 A EP96111275 A EP 96111275A EP 96111275 A EP96111275 A EP 96111275A EP 0765720 A2 EP0765720 A2 EP 0765720A2
Authority
EP
European Patent Office
Prior art keywords
gun
trigger
nozzle needle
foam
nozzle
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
EP96111275A
Other languages
German (de)
English (en)
Other versions
EP0765720A3 (fr
EP0765720B1 (fr
Inventor
Harald Dengler
Wolfgang Nehl
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.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer 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 Fischerwerke Artur Fischer GmbH and Co KG filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Publication of EP0765720A2 publication Critical patent/EP0765720A2/fr
Publication of EP0765720A3 publication Critical patent/EP0765720A3/fr
Application granted granted Critical
Publication of EP0765720B1 publication Critical patent/EP0765720B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B65D83/207—Actuators comprising a manually operated valve and being attachable to the aerosol container, e.g. downstream a valve fitted to the container; Actuators associated to container valves with valve seats located outside the aerosol container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0894—Gun with a container which, in normal use, is located above the gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories

Definitions

  • the invention relates to a gun for processing polyurethane foam or the like.
  • Such pistols are known per se. They are used for introducing polyurethane foam or the like into throats and grooves, for example between a window frame and a window opening in a wall, for sealing the window frame in the wall.
  • the known pistols have a swivel lever as a trigger, which is arranged at a distance from the front of the pistol grip. As a result, there is a risk that a finger of the hand can get caught between the trigger and the pistol grip when the trigger is actuated.
  • the object of the invention is to ergonomically improve a pistol of the type mentioned at the outset and to prevent fingers being caught between the trigger and the pistol grip.
  • the side surfaces of the trigger of the pistol according to the invention protrude into a recess in the pistol grip and thereby hold the fingers of a hand gripping the pistol grip from the trigger so that they cannot get between the trigger and the pistol grip. This prevents your fingers from getting caught when you pull the trigger.
  • the trigger of the pistol according to the invention is sunk with its side faces deeper into the recess of the pistol grip, which is not a problem since the interior of the pistol grip contains no components and is not otherwise required.
  • An underside of the trigger is preferably also designed to be closed and inserted into the recess of the pistol grip in order to keep a finger on the underside of the trigger from the space between the trigger and pistol grip.
  • the trigger can be pivotally mounted inside the gun housing.
  • the trigger is slidably mounted in the gun housing.
  • an adapter for connecting a can containing polyurethane foam or the like is arranged above the pistol grip or even further back on the pistol housing.
  • the center of gravity of the pistol, with the polyurethane foam canister attached, with the pistol held horizontally is in the area above or behind the pistol grip, that is to say close to the wrist.
  • a top heaviness which means that the center of gravity of the pistol with attached polyurethane foam canister is in front of the handle, is avoided and the wrist is noticeably relieved, which is ergonomically advantageous in particular when the pistol is used for a long time.
  • the pistol has a sealing element which seals a nozzle needle at its exit point from a foam-guiding space on a side facing away from the nozzle of the pistol in the interior of the pistol.
  • This sealing element is sealingly attached to the foam-guiding space and, according to the invention, has a sealing point which bears sealingly on the circumference of the nozzle needle and moves with the nozzle needle when it is actuated. There is therefore no relative movement between the nozzle needle and the sealing element, so that there is no friction and therefore no wear at the sealing point. This extends the life of the sealing element considerably.
  • the sealing element can be designed as a disk-shaped membrane or as a bellows.
  • the gun On its rear side facing away from the nozzle, the gun has an adjusting screw which limits a backward movement of the nozzle needle in the axial direction, by means of which a maximum nozzle opening and thus the maximum amount of foam discharge per time can thus be set.
  • this set screw is screwed directly into the gun housing and forms a cover for the rear of the gun housing. This eliminates the need for a sealing plug, which is attached to the back of the gun housing and into which the set screw is screwed.
  • the pistol according to the invention shown in the drawing has a pistol housing 12 made of plastic injection molding with a one-piece pistol grip 14.
  • a metal or plastic tube protruding toward the front is firmly inserted as the nozzle shaft 16, which has a nozzle 18 at its front end for the exit of the polyurethane foam or the like.
  • the nozzle shaft 16 By means of the nozzle shaft 16, the polyurethane foam or the like can be applied to poorly accessible places such as throats or grooves.
  • a nozzle needle 20 is located in the nozzle shaft 16, which closes the nozzle 18 in a basic position and opens in the illustrated, retracted position for the foam outlet.
  • the nozzle shaft 16 is connected to a foam-guiding space 22 inside the gun 12, which extends the nozzle shaft 16 into a rear region of the gun 12.
  • the nozzle needle 20 runs through the foam-guiding space 22 and exits at the rear thereof.
  • the gun 12 has an adapter 24 for a can, not shown in the drawing, containing polyurethane foam or the like.
  • the adapter 24 opens into the foam-guiding space 22 from above. It contains a non-return valve 26 which allows foam under pressure in the can (not shown) to flow into the foam-guiding space 22 and prevents foam from flowing back out of the foam-guiding space 22.
  • the adapter 24 is located in the rear part of the pistol 12 above the pistol grip 14 and is offset somewhat to the rear.
  • the adapter 24 is arranged on the gun 12 so that its center of gravity is approximately above the gun handle 14 or behind when the can is attached. This arrangement results in an ergonomically favorable center of gravity of the gun 12 with the can, which is a prerequisite for fatigue-free working over a long period of time.
  • the pistol 12 has a trigger 28 on the front of the pistol grip 14.
  • the trigger 28 is guided with laterally projecting guide strips 30 in the gun housing 12 so as to be displaceable to the rear. It has closed, flat side surfaces 32 and a closed bottom 34.
  • the side surfaces 32 and the bottom 34 of the trigger 28 also protrude into a recess 36 of the pistol grip 14 when the trigger 28 is not actuated (the actuated position is shown in the drawing).
  • the side surfaces 32 and the bottom 34 prevent fingers of a hand holding the pistol grip 14 from getting between the trigger 28 and the pistol grip 14 and being pinched when the trigger 28 is actuated.
  • An actuating strut 38 which is integral with the trigger 28 is arranged in the interior of the gun housing 12. It is connected in an articulated manner to an actuating lever 40 which projects upward behind the foam-guiding space 22 and is supported in the interior of the housing 12 via an articulated connection 42.
  • the actuating lever 40 has an opening 44 through which the nozzle needle 20 passes.
  • the actuating lever 40 has a cylinder 46 which is integral with it and runs transversely in the area of its opening 44, against which an adjusting ring 48 which is fitted in the rear end area on the nozzle needle 20 bears.
  • a closing spring 50 designed as a helical compression spring presses against the adjusting ring 48 of the nozzle needle 20. The closing spring 50 presses the nozzle needle 20 into its position closing the nozzle 18 when the trigger 28 is not actuated. At the same time, the closing spring 50 presses the trigger 28 into its basic position via the actuating lever 40.
  • the closing spring 50 is supported in the interior of a high set screw 52.
  • the set screw 52 has approximately the same diameter as the gun housing 12 and is screwed directly into a thread 54 of the gun housing 12.
  • the set screw 52 also forms a cover cap for the rear end of the gun 12.
  • the adjusting screw 52 has a pin 55 which is integral with it and which is aligned with the nozzle needle 20 and against which the nozzle needle 20 abuts when the trigger 28 is actuated.
  • the pin 55 thus limits the retraction path of the nozzle needle 20 and thus the outlet cross section in the nozzle 18.
  • a sealing element 56 is attached to the rear of the foam-guiding space 22 and seals the exit point of the nozzle needle 20 from the foam-guiding space 22.
  • the sealing element 56 is made of rubber. It has the shape of a bellows.
  • the sealing element 56 is placed over a radial flange 58 of the foam-guiding space 22, which surrounds the exit point of the nozzle needle 20 from the foam-guiding space 22.
  • the sealing element 56 lies with a sealing bead 60 sealingly against the circumference of the nozzle needle 20.
  • the nozzle needle 20 When the nozzle needle 20 is actuated, it moves with its sealing bead 60 with the nozzle needle 20, so that there is no relative movement between the sealing element 56 and the nozzle needle 20 on the one hand and the flange 58 of the foam-guiding space 22 on the other hand.
  • the sealing element 56 is wear-free in this way.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Molding Of Porous Articles (AREA)
EP96111275A 1995-09-29 1996-07-12 Pistolet pour mousse de polyuréthane ou produit similaire Expired - Lifetime EP0765720B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29515552U DE29515552U1 (de) 1995-09-29 1995-09-29 Pistole für Polyurethanschaum o.dgl.
DE29515552U 1995-09-29

Publications (3)

Publication Number Publication Date
EP0765720A2 true EP0765720A2 (fr) 1997-04-02
EP0765720A3 EP0765720A3 (fr) 1998-01-07
EP0765720B1 EP0765720B1 (fr) 2001-10-31

Family

ID=8013586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111275A Expired - Lifetime EP0765720B1 (fr) 1995-09-29 1996-07-12 Pistolet pour mousse de polyuréthane ou produit similaire

Country Status (6)

Country Link
EP (1) EP0765720B1 (fr)
JP (1) JPH09108607A (fr)
AT (1) ATE207795T1 (fr)
BR (1) BR9603903A (fr)
DE (2) DE29515552U1 (fr)
ES (1) ES2165945T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026820A1 (fr) * 1999-10-08 2001-04-19 Ham Il Co., Ltd. Pistolet pour injection de mousse de polyurethane liquide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69906479T2 (de) * 1999-04-23 2004-03-18 Clive Addison Pistole für Urethanschäume oder dergleichen
DE102010009522A1 (de) 2010-02-26 2011-09-01 Thomas Irion Pistole zum Ausbringen eines fließfähigen Materials

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126321A (en) * 1977-11-03 1978-11-21 Nordson Corporation Packingless bellows seal
JPS61192366A (ja) * 1985-02-19 1986-08-26 Osaka Eyazoole Kogyo Kk エアゾ−ル製品
DE3710395A1 (de) * 1987-03-28 1988-10-13 Bruno Jesswein Spritzpistole fuer schaumstoff
EP0437112A2 (fr) * 1990-01-09 1991-07-17 W.R. Grace & Co.-Conn. Joint d'étanchéité amélioré
US5271537A (en) * 1992-08-14 1993-12-21 Johnson Charles W Foam dispensing device
WO1996000184A1 (fr) * 1994-06-23 1996-01-04 Insta-Foam Products, Inc. Distributeur ameliore pour produits coulants
DE19503495A1 (de) * 1995-02-03 1996-08-08 Amv Autom Montage Vertrieb Fa Spritzpistole mit ansetzbaren Düsenelementen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3031938A1 (de) * 1980-08-25 1982-04-08 Hilti AG, 9494 Schaan Geraet zum abgeben von ein- oder mehrkomponentenmassen
WO1993003860A1 (fr) * 1991-08-27 1993-03-04 Enzacor Australia Pty. Ltd. Pistolet distributeur de doses

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126321A (en) * 1977-11-03 1978-11-21 Nordson Corporation Packingless bellows seal
JPS61192366A (ja) * 1985-02-19 1986-08-26 Osaka Eyazoole Kogyo Kk エアゾ−ル製品
DE3710395A1 (de) * 1987-03-28 1988-10-13 Bruno Jesswein Spritzpistole fuer schaumstoff
EP0437112A2 (fr) * 1990-01-09 1991-07-17 W.R. Grace & Co.-Conn. Joint d'étanchéité amélioré
US5271537A (en) * 1992-08-14 1993-12-21 Johnson Charles W Foam dispensing device
WO1996000184A1 (fr) * 1994-06-23 1996-01-04 Insta-Foam Products, Inc. Distributeur ameliore pour produits coulants
DE19503495A1 (de) * 1995-02-03 1996-08-08 Amv Autom Montage Vertrieb Fa Spritzpistole mit ansetzbaren Düsenelementen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026820A1 (fr) * 1999-10-08 2001-04-19 Ham Il Co., Ltd. Pistolet pour injection de mousse de polyurethane liquide

Also Published As

Publication number Publication date
EP0765720A3 (fr) 1998-01-07
ES2165945T3 (es) 2002-04-01
DE29515552U1 (de) 1997-02-06
DE59608056D1 (de) 2001-12-06
JPH09108607A (ja) 1997-04-28
ATE207795T1 (de) 2001-11-15
BR9603903A (pt) 1998-06-09
EP0765720B1 (fr) 2001-10-31

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