EP0440149A2 - Pistolet à usages multiples, commandé et actionné par air comprimé, pour l'application de matériaux pâteux - Google Patents

Pistolet à usages multiples, commandé et actionné par air comprimé, pour l'application de matériaux pâteux Download PDF

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Publication number
EP0440149A2
EP0440149A2 EP91101101A EP91101101A EP0440149A2 EP 0440149 A2 EP0440149 A2 EP 0440149A2 EP 91101101 A EP91101101 A EP 91101101A EP 91101101 A EP91101101 A EP 91101101A EP 0440149 A2 EP0440149 A2 EP 0440149A2
Authority
EP
European Patent Office
Prior art keywords
air
pressure chamber
outlet nozzle
compressed air
gun
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
EP91101101A
Other languages
German (de)
English (en)
Other versions
EP0440149A3 (en
EP0440149B1 (fr
Inventor
Reinhard Plehn
Rainer Brückner
Hermann Diener
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.)
Deutsche Tecalemit GmbH
Original Assignee
Deutsche Tecalemit GmbH
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
Priority claimed from DE9000957U external-priority patent/DE9000957U1/de
Priority claimed from DE9011965U external-priority patent/DE9011965U1/de
Application filed by Deutsche Tecalemit GmbH filed Critical Deutsche Tecalemit GmbH
Publication of EP0440149A2 publication Critical patent/EP0440149A2/fr
Publication of EP0440149A3 publication Critical patent/EP0440149A3/de
Application granted granted Critical
Publication of EP0440149B1 publication Critical patent/EP0440149B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2435—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other
    • B05B7/2437—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other and a secondary stream of atomising fluid being brought together in the container or putting the carried fluid under pressure in the container

Definitions

  • the invention relates to a multi-purpose gun for applying pasty materials with a divisible housing designed as a pressure chamber for receiving an exchangeable disposable package containing the pasty material, with an actuating handle for a compressed air valve, which is arranged in a compressed air supply line to the pressure chamber and with a material outlet nozzle.
  • Air-operated pistols for applying pasty materials for example sealing compounds for motor vehicles
  • Disposable packs which are designed as cartridges or plastic press packs and contain the pasty material, are placed in a pressure chamber. The compressed air there acts on the respective pack and causes the material to exit through an outlet nozzle.
  • a certain amount of material is dispensed per unit of time by manually actuating a valve, depending on the consistency of the processed material.
  • the material is applied in a thread-like manner to the surface to be sealed. After application, the strand or thread applied must be distributed evenly by hand will. A thin, even application of the material is very difficult and depends on the skill of the fitter.
  • the invention has for its object to provide a multi-purpose pistol, which alternatively enables two operations, namely on the one hand the strand-like or thread-like outlet of the pasty material, which is referred to as “syringes” and on the other hand a flat outlet, which as “Spraying” is called.
  • the multi-purpose pistol has a second pressure chamber which, like the first pressure chamber containing the disposable pack, can be charged with compressed air and which opens into an air outlet nozzle at least partially encompassing the material outlet nozzle with a mixing chamber for mixing pasty material and air from which the material, which may be mixed with air, exits, the amount of air entering the air outlet nozzle and the mixing chamber being adjustable.
  • first pressure chamber and the second pressure chamber are pneumatically connected in parallel.
  • the task of the second pressure chamber and the adjoining outlet members is to act upon the pasty material emerging from the first pressure chamber as it exits the first material nozzle with pneumatic energy of the incoming compressed air so that the pasty material be taken.
  • a thin, even application of the material is very difficult and depends on the skill of the fitter.
  • the invention has for its object to provide a multi-purpose pistol, which alternatively enables two operations, namely on the one hand the strand-like or thread-like outlet of the pasty material, which is referred to as “syringes” and on the other hand a flat outlet, which as “Spraying” is called.
  • the multi-purpose pistol has a second pressure chamber which, like the first pressure chamber containing the disposable pack, can be charged with compressed air and which opens into an air outlet nozzle at least partially encompassing the material outlet nozzle with a mixing chamber for mixing pasty material and air from which the material, which may be mixed with air, exits, the amount of air entering the air outlet nozzle and the mixing chamber being adjustable.
  • first pressure chamber and the second pressure chamber are pneumatically connected in parallel.
  • Send outlet members is to act upon the pasty material emerging from the first pressure chamber upon exiting the first material nozzle with pneumatic energy of the incoming compressed air so that the pasty Material is mixed with compressed air, divided and accelerated and that there is a fine, if necessary thin layer distribution in the form of a material film on the surface to be sealed.
  • a shut-off device or actuating device By means of the corresponding arrangement and actuation of a shut-off device or actuating device, the compressed air entering the second pressure chamber can optionally be switched on and off during the immediate handling of the pistol, so that the pistol can be used for multiple purposes.
  • the first and second pressure chambers are pneumatically separated so that the pneumatic dead spaces are kept as small as possible and consequently very rapid pressure relief is possible after the material application has ended.
  • the expansion is limited to the relevant first pressure room.
  • a pressure-free space is arranged concentrically to the first pressure space and the second pressure space, which is sealed by means of a seal which is arranged between the outer diameter and the circular-cylindrical disposable material pack and the inner diameter of the first pressure space.
  • the unpressurised space therefore surrounds the disposable pack.
  • the cylindrical disposable pack is accommodated in a cylindrically designed first pressure chamber.
  • a follower piston conveys its material to a material outlet nozzle. This forms a structural unit with the housing base and is easily exchangeable via a thread.
  • a handle enables one-hand operation in front of both pneumatic pressure rooms.
  • this handle there is a manual trigger guard with a 3/2 seat valve, which is followed by both compressed air lines.
  • An adjustable compressed air reducing valve is connected downstream of the primary line. The two valves are combined into a compact valve assembly.
  • a pneumatically operated 3/2-way valve is integrated in the housing, which in its rest position releases the compressed air from the first pressure chamber.
  • the essential features of the invention lie in the design, arrangement and actuation of a compressed air shut-off device for the second pressure line. Spraying takes place in the closed position of the compressed air shut-off device, spraying is carried out in the open position.
  • the compressed air shut-off device is actuated by a rotary movement of the exchangeable nozzle with an adjustment thread, which causes the axial and concentric displacement to the material outlet nozzle.
  • a "spraying" end position the conical inner sealing surface is pressed against an edge of the housing base and prevents the secondary air from escaping.
  • the "spraying" position it is opened so far that the desired spray pattern results.
  • the mixing of the pasty material with the spray air, and thus the energy exchange take place in the outlet area of the air outlet nozzle.
  • the inner surface of the air outlet nozzle is guided on the outer surface of the material outlet nozzle.
  • the air outlet nozzle has an elastic seal behind the adjustment thread opposite the housing head. The seal and the air outlet nozzle form an interchangeable unit.
  • the entire multi-purpose pistol is provided with the reference number 1 in FIG. It has a compressed air line 17 in which a 3/2 seat valve 9 for the compressed air is arranged. Behind the 3/2 seat valve 9, the compressed air flow divides into a primary line containing a line 2, which effects the material conveyance, and into a secondary line containing a line 7 for the multi-purpose function of the nozzles 24 and 26.
  • a mechanically adjustable compressed air reducing valve 4 is arranged in the primary line .
  • the two valves 9 and 4 form a compact valve assembly 10, which in turn is easily removable and replaceable from the multi-purpose gun.
  • a pneumatically operated 3/2-way valve 5 is arranged, which on the one hand releases the compressed air when a multi-purpose gun is actuated to a follower piston 18 for conveying the material 19, and on the other hand releases the immediate expansion of the compressed air when a trigger 33 of the multi-purpose gun is released effected via a silencer 6.
  • a disposable package 16 is clamped axially pressure-tight in the housing 11 by means of a spring 20 and is sealed radially with a seal 15 with respect to a pressure-free space 14.
  • the pressure-free space 14 is in turn connected to the atmosphere via a ventilation hole 21.
  • a tapping pin 22 causes the disposable pack 16 to open when it is introduced into the housing 11.
  • the line of the secondary line 7 opens into the second pressure chamber 13 of the housing 11 behind the 3/2-way valve 9.
  • the pasty material 19 is guided through the action of the first pressure chamber via the material outlet nozzle 24 into a mixing zone 25 of the second pressure line 7 with the compressed air nozzle 26 and emerges from the multi-purpose gun at the mouth 27.
  • the compressed air flow of the secondary line 7 into the air outlet nozzle 26 can be manually switched on or off by the compressed air shut-off device 8.
  • the multi-purpose pistol is shown in its design.
  • a compressed air connection 32 is arranged on a handle 31.
  • the valve assembly 10 is actuated mechanically with a trigger bracket 33 and thus the multi-purpose gun 1 is also actuated.
  • the built-in compressed air reducing valve is adjusted to the desired air pressure with a rotary knob 34.
  • the adjoining primary line 2 has the primary channel 35, the 3/2 seat valve 5 with the muffler 6 and the primary pressure chamber or first pressure chamber 12.
  • the pasty material 19 is pressurized via its follower piston 18 of the disposable pack 16 and via the material outlet nozzle 24 and the mixing zone 25 of the mouth 27 supplied.
  • a tapping bolt 22 which pierces the protective film 36 of the disposable pack 16 when it is inserted into the gun, a spring 20 and a seal 15 are arranged.
  • a pressure-free space 14 with a ventilation bore 21 is arranged behind the seal 17.
  • the secondary line 7 is arranged, which is formed by a line, the second pressure chamber 19, the annular channel 29 and the air outlet nozzle 26.
  • the second pressure chamber 13 consists of a concentric pressure chamber 37 and an end-side pressure chamber 38. 39 denotes the ring channel of the air outlet nozzle 26. From there, the compressed air flows into the mixing zone 25.
  • the ring channel 39 in the area of the compressed air shut-off device 8 can be released or closed by an adjusting thread 40 of the material outlet nozzle 24 designed as a one-way nozzle. The adjustment adjusts whether the multi-purpose pistol should work with or without secondary air.
  • FIG. 3 shows a gun nozzle 3, in which the multi-purpose gun works with material 19, which is located in standardized, disposable material packs 16.
  • the second pressure chamber 13 and thus the secondary line 7 are closed by an adapter 29.
  • a disposable standard nozzle 30 is used.
  • larger containers for example canisters or barrels, which are arranged outside the gun can also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
EP91101101A 1990-01-29 1991-01-29 Pistolet à usages multiples, commandé et actionné par air comprimé, pour l'application de matériaux pâteux Expired - Lifetime EP0440149B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9000957U 1990-01-29
DE9000957U DE9000957U1 (de) 1990-01-29 1990-01-29 Druckluftbetätigte Mehrzweckpistole zum Auftragen pastöser Materialien
DE9011965U DE9011965U1 (de) 1990-08-17 1990-08-17 Druckluftgesteuerte und -betätigte Mehrzweckpistole zum Auftragen pastöser Materialien
DE9011965U 1990-08-17

Publications (3)

Publication Number Publication Date
EP0440149A2 true EP0440149A2 (fr) 1991-08-07
EP0440149A3 EP0440149A3 (en) 1991-12-27
EP0440149B1 EP0440149B1 (fr) 1994-07-27

Family

ID=25956157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101101A Expired - Lifetime EP0440149B1 (fr) 1990-01-29 1991-01-29 Pistolet à usages multiples, commandé et actionné par air comprimé, pour l'application de matériaux pâteux

Country Status (3)

Country Link
EP (1) EP0440149B1 (fr)
DE (1) DE59102296D1 (fr)
ES (1) ES2057611T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216746A1 (de) * 1992-05-21 1993-11-25 Sika Chemie Gmbh Vorrichtung für den Auftrag pastöser Massen mittels Druckluft
US5536531A (en) * 1994-07-26 1996-07-16 Minnesota Mining And Manufacturing Company Applicator for shear thinning viscous coating materials

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB723721A (en) * 1951-12-19 1955-02-09 Tecalemib Ltd A device for use in the atomisation and projection of viscous materials
US4174068A (en) * 1978-11-07 1979-11-13 Rudolph Robert L Gun having disposable cartridge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216746A1 (de) * 1992-05-21 1993-11-25 Sika Chemie Gmbh Vorrichtung für den Auftrag pastöser Massen mittels Druckluft
US5536531A (en) * 1994-07-26 1996-07-16 Minnesota Mining And Manufacturing Company Applicator for shear thinning viscous coating materials
US5558277A (en) * 1994-07-26 1996-09-24 Minnesota Mining And Manufacturing Company Applicator for shear thinning viscous coating materials

Also Published As

Publication number Publication date
ES2057611T3 (es) 1994-10-16
EP0440149A3 (en) 1991-12-27
EP0440149B1 (fr) 1994-07-27
DE59102296D1 (de) 1994-09-01

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