EP0028070A1 - Gun for applying mastic material - Google Patents

Gun for applying mastic material Download PDF

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Publication number
EP0028070A1
EP0028070A1 EP80303339A EP80303339A EP0028070A1 EP 0028070 A1 EP0028070 A1 EP 0028070A1 EP 80303339 A EP80303339 A EP 80303339A EP 80303339 A EP80303339 A EP 80303339A EP 0028070 A1 EP0028070 A1 EP 0028070A1
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EP
European Patent Office
Prior art keywords
barrel
mastic material
gun
nozzle
cartridge
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.)
Withdrawn
Application number
EP80303339A
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German (de)
French (fr)
Inventor
Thomas John Wood
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0028070A1 publication Critical patent/EP0028070A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B05C17/00523—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 provided with means to heat the material
    • B05C17/0054—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 provided with means to heat the material the driving means for the material being pneumatic or hydraulic
    • B05C17/00543—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 provided with means to heat the material the driving means for the material being pneumatic or hydraulic comprising a piston

Definitions

  • This invention refers to guns for dispensing mastic material, e.g. in the application of such material as a sealant to double glazing window units or for other purposes.
  • the invention relates more particularly to such guns in which the gun barrel receives a cartridge of mastic material for ejection of the material from a nozzle of the gun on application of pressure to the mastic material within the barrel.
  • the object of the invention is to provide an improved gun which can be conveniently operated in ejecting mastic material especially butyl mastic sealant in a required condition for application. Practical advantages of the invention in this respect will be apparent from the following disclosure.
  • a gun for applying mastic material comprises a barrel for receiving mastic material, e.g. in a a cartridge; nozzle provided at the forward end of the barrel; heating means such as one or more electric heaters provided about the barrel for heating the latter and mastic material received therein; a body secured to the rear end of the barrel; a handle carried by said body and operable means carried by said body for applying pressure to mastic material received in the barrel whereby the mastic material softened by the heating means can be ejected from the nozzle of the barrel.
  • the barrel 1 of the gun which receives a cartridge 2 consisting of a cylindrical container 20 containing butyl mastic material M is housed in an outer casing 11 and fitted about the barrel 1 is electric heating means 10 of coil or band type.
  • electric heating means 10 of coil or band type.
  • two heating units 10 of semi-cylindrical form are secured about the barrel 1 and are bolted together by their flanges 110.
  • a heating coil wound about the barrel 1 may be employed, i.e. fitted as a sheath.
  • the outer casing 11 is of heat insulating material such as nylon or nylon based material and an annular insulating air space A is provided between the heaters 10 and casing 11 and through which cooling air flow can take place to maintain the casing 11 at a temperature at which it can be held during continuous use of the gun.
  • the casing 11 is shown mounted from the barrel 1 by front and rear end plates 9. As will be seen in FIGURE 2 the plates are of square form in the cylindrical casing 11 so as to leave gaps 119 for cooling air flow in the space A.
  • the barrel 1 is secured at its rear end to a body 33 of suitable plastic heat insulating material carrying a pistol grip handle 3 provided with a trigger 30 controlling an air inlet valve 31 from a compressed air supply, a connecting pipe for which is shown at 34.
  • a trigger 30 controlling an air inlet valve 31 from a compressed air supply, a connecting pipe for which is shown at 34.
  • the heaters 10 are connected to a source of current supply by a flexible cable 5 andtheir operation is controlled by a temperature controller or thermostat 6 in heating the mastic material M and maintaining it at a required temperature whereby it is in a suitable fluid or plastic condition.
  • the operating temperature of the heaters 10 may be of the order of 180°C.
  • trigger operation of the valve 31 enables air under pressure to be applied to the closure 22 and causes it and the softened mastic material M to be advanced forwardly along the interior of the container 20 for expulsion of the mastic material through a nozzle 7 at the forward end of the barrel 1. Ejection of the softened mastic material by compressed air avoids the need for mechanical operation of the gun in this respect and thus minimises operator fatigue when continuously using the gun.
  • Both the barrel 1 and nozzle 7 and mounting of the latter are of suitable heat conductive material or metal in order to ensure that the mastic material M is maintained at the required softening temperature during ejection from the nozzle 7 and application to work receiving the material.
  • the nozzle 7 is detachably mounted on or in relation to the barrel 1 for front end loading of the latter with a cartridge 2 and in the example shown the nozzle 7 is carried by a cap 72 which screws onto a threaded ring 71 fitted about the forward end of the barrel 1.
  • the cap 72 is provided with a radial handle 70 for readily enabling it to be firmly screwed onto the barrel ring 71 or unscrewed therefrom.
  • a co-axial tubular member 73 of the cap 72 receives a holder 74 for the nozzle 7 and a rearwardly extending tube 77 of the latter.
  • the tubular member 73 accommodates a reduced end part or neck 23 of the cartridge container 20, the end of the neck 23 being initially closed but which is pierced by the pointed rear end 770 of the tube 77 as the cap 72 is screwed home on the barrel 1.
  • passage of softened mastic material M along the tube 77 and through the nozzle 7 can take place.
  • nozzle ? on the barrel 1 can be employed such as bayonet or like connection for access to the forward open end of the barrel in order to load it with a cartridge 2 or remove a spent cartridge.
  • nozzle cap 72 For firm location of the cartridge 2 in the barrel after screwing on the nozzle cap 72, the rear end of the container 20 seats against a heat resistant seal 32 carried by the body 33.
  • the gun enables the softened material to be conveniently applied in a continuous or uninterrupted manner as required, i.e. until the cartridge is exhausted. Effective operation in this way has been borne out by practical tests.

Abstract

A gun for applying mastic material especially butyl mastic sealant comprises a barrel (1) for receiving mastic material (M), e.g. in a cartridge (2), the barrel (1) having electric heater means (10) about it for heat softening the mastic material (M) so that on application of pressure to the softened mastic material (M) it is ejected from the nozzle (7) in suitable form for application. As shown pressure is applied to the mastic material (M) by air under pressure admitted to the rear of the barrel (1) through a trigger operated valve (31), the air acting on an internal rear closure (22) of the cartridge container (20). The nozzle (7) is detachable for front end loading of a cartridge (2) in the barrel (1), a rear part (77) of the nozzle (7) piercing the forward end of the cartridge container (20) when the nozzle (7) is remounted on the barrel (1). An outer casing (11) is heat insulated from the heating means (10) by an air space (A).

Description

  • This invention refers to guns for dispensing mastic material, e.g. in the application of such material as a sealant to double glazing window units or for other purposes.
  • The invention relates more particularly to such guns in which the gun barrel receives a cartridge of mastic material for ejection of the material from a nozzle of the gun on application of pressure to the mastic material within the barrel.
  • The object of the invention is to provide an improved gun which can be conveniently operated in ejecting mastic material especially butyl mastic sealant in a required condition for application. Practical advantages of the invention in this respect will be apparent from the following disclosure.
  • According to the invention a gun for applying mastic material comprises a barrel for receiving mastic material, e.g. in a a cartridge; nozzle provided at the forward end of the barrel; heating means such as one or more electric heaters provided about the barrel for heating the latter and mastic material received therein; a body secured to the rear end of the barrel; a handle carried by said body and operable means carried by said body for applying pressure to mastic material received in the barrel whereby the mastic material softened by the heating means can be ejected from the nozzle of the barrel.
  • In a practical example of the gun the construction and arrangement is as follows, reference being had to the accompanying drawings in which:-
    Figure imgb0001
  • The barrel 1 of the gun which receives a cartridge 2 consisting of a cylindrical container 20 containing butyl mastic material M is housed in an outer casing 11 and fitted about the barrel 1 is electric heating means 10 of coil or band type. In the example shown two heating units 10 of semi-cylindrical form are secured about the barrel 1 and are bolted together by their flanges 110. However a heating coil wound about the barrel 1 may be employed, i.e. fitted as a sheath. The outer casing 11 is of heat insulating material such as nylon or nylon based material and an annular insulating air space A is provided between the heaters 10 and casing 11 and through which cooling air flow can take place to maintain the casing 11 at a temperature at which it can be held during continuous use of the gun.
  • The casing 11 is shown mounted from the barrel 1 by front and rear end plates 9. As will be seen in FIGURE 2 the plates are of square form in the cylindrical casing 11 so as to leave gaps 119 for cooling air flow in the space A.
  • The barrel 1 is secured at its rear end to a body 33 of suitable plastic heat insulating material carrying a pistol grip handle 3 provided with a trigger 30 controlling an air inlet valve 31 from a compressed air supply, a connecting pipe for which is shown at 34. When the valve 31 is trigger operated air under pressure is able to pass along a passage 330 in the body 33 to act on an internal closure 22 of the cartridge 2 in order to push the closure along the interior of the container 20, i.e. when the mastic material M has been softened from its cold quite hard condition by heat from the heaters 10. The closure 22 thus acts as a plunger or piston in the container 20 on the mastic material M.
  • In use the heaters 10 are connected to a source of current supply by a flexible cable 5 andtheir operation is controlled by a temperature controller or thermostat 6 in heating the mastic material M and maintaining it at a required temperature whereby it is in a suitable fluid or plastic condition. The operating temperature of the heaters 10 may be of the order of 180°C.
  • When the mastic material M is at the required temperature, trigger operation of the valve 31 enables air under pressure to be applied to the closure 22 and causes it and the softened mastic material M to be advanced forwardly along the interior of the container 20 for expulsion of the mastic material through a nozzle 7 at the forward end of the barrel 1. Ejection of the softened mastic material by compressed air avoids the need for mechanical operation of the gun in this respect and thus minimises operator fatigue when continuously using the gun.
  • Both the barrel 1 and nozzle 7 and mounting of the latter are of suitable heat conductive material or metal in order to ensure that the mastic material M is maintained at the required softening temperature during ejection from the nozzle 7 and application to work receiving the material. The nozzle 7 is detachably mounted on or in relation to the barrel 1 for front end loading of the latter with a cartridge 2 and in the example shown the nozzle 7 is carried by a cap 72 which screws onto a threaded ring 71 fitted about the forward end of the barrel 1. The cap 72 is provided with a radial handle 70 for readily enabling it to be firmly screwed onto the barrel ring 71 or unscrewed therefrom.
  • A co-axial tubular member 73 of the cap 72 receives a holder 74 for the nozzle 7 and a rearwardly extending tube 77 of the latter. The tubular member 73 accommodates a reduced end part or neck 23 of the cartridge container 20, the end of the neck 23 being initially closed but which is pierced by the pointed rear end 770 of the tube 77 as the cap 72 is screwed home on the barrel 1. Thus passage of softened mastic material M along the tube 77 and through the nozzle 7 can take place.
  • Other suitable detachable mounting of the nozzle ? on the barrel 1 can be employed such as bayonet or like connection for access to the forward open end of the barrel in order to load it with a cartridge 2 or remove a spent cartridge. For firm location of the cartridge 2 in the barrel after screwing on the nozzle cap 72, the rear end of the container 20 seats against a heat resistant seal 32 carried by the body 33.
  • mastic As will be appreciated, the gun enables the softened material to be conveniently applied in a continuous or uninterrupted manner as required, i.e. until the cartridge is exhausted. Effective operation in this way has been borne out by practical tests.

Claims (8)

1. A gun for applying mastic material comprises a barrel (1) for receiving mastic material (M), e.g. in a cartridge (2); a nozzle (7) provided at the forward end of the barrel (1); heating means (10) such as one or more electric heaters provided about the barrel (1) for heating the latter and mastic material (M) received therein; a body (33) secured to the rear end of the barrel (1); a handle (3) carried by said body (33), and operable means (30,31) carried by said body (33) for applying pressure to mastic material (M) received in the barrel (1) whereby the mastic material (M) softened by the heating means (10) can be ejected from the nozzle (7) of the barrel (1).
2. A gun for applying mastic material according to claim 1 wherein the means (30,31) for applying pressure to mastic material (M) received in the barrel (1) consists of an operable valve (30,31) carried by said body (33) for admitting fluid under pressure such as compressed air into the rear end of the barrel (1) for the application of pressure to mastic material (M) received in the barrel (1).
3. A gun for applying mastic material according to claim 2 wherein the barrel (1) is adapted to receive a cartridge (2) containing mastic material (M) in which the cartridge container 20 is provided with an internal closure (22) at its rear end, fluid under pressure such as compressed air admitted by the valve (30,31) into the rear end of the barrel (1) acting on said closure (22) in order to advance the latter and heat softened mastic material (M) along the barrel (1) for ejection of the softened mastic material (M) from the nozzle (7) of the barrel (1).
4. A gun for applying mastic material according to any of claims 1 to 3 wherein the nozzle (7) is detachably mounted on the forward end of the barrel (1) for front end loading of the barrel (1) with mastic material (M), e.g. in a cartridge (2).
5: A gun for applying mastic material according to claim 4 wherein a rearwardly extending part (77) of the nozzle (7) is adapted to pierce the container (20) of a cartridge (2) of mastic material (M) inserted in the barrel (1) on the nozzle (7) being remounted on the forward end of the barrel (1).
6. A gun for applying mastic material according to any of the preceding claims wherein the rear end of the barrel (1) contains sealing means (32) against which the rear end of a container (20) of a cartridge (2) of mastic material (M) seats when fully inserted in the barrel (1).
7. A gun for applying mastic material according to any of the preceding claims wherein a heat insulating outer casing (11) is provided about the heating means (10) and barrel (1).
8. A gun for applying mastic material according to claim 7 wherein an air space (A) is provided between the outer casing (11) and the heating means (10), said space (A) having openings (119) for cooling air flow into it in order to provide heat insulation between the heating means (10) and the outer casing (11).
EP80303339A 1979-10-11 1980-09-24 Gun for applying mastic material Withdrawn EP0028070A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7935378 1979-10-11
GB7935378 1979-10-11

Publications (1)

Publication Number Publication Date
EP0028070A1 true EP0028070A1 (en) 1981-05-06

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EP80303339A Withdrawn EP0028070A1 (en) 1979-10-11 1980-09-24 Gun for applying mastic material

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EP (1) EP0028070A1 (en)
GB (1) GB2060780A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056310A2 (en) * 1981-01-09 1982-07-21 Thomas John Wood Cartridge for holding mastic or similar material in an applicator gun
EP0227280A2 (en) * 1985-11-26 1987-07-01 Nortel Networks Corporation Dispensing containers
JP2016094006A (en) * 2012-12-05 2016-05-26 ワブルワークス、インコーポレイテッドＷｏｂｂｌｅｗｏｒｋｓ， Ｉｎｃ． Hand-held three-dimensional drawing device
WO2017099884A1 (en) * 2015-12-07 2017-06-15 Spirit Aerosystems, Inc System and method for reducing air ingression into sealant tubes
CN108787347A (en) * 2017-05-03 2018-11-13 广东省有机硅工程技术研究开发中心 A kind of composite double layer packing element

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020907A (en) * 1959-04-01 1962-02-13 Sr Kenneth C Lease Extrusion gun heater
US3665158A (en) * 1970-07-31 1972-05-23 Don T Froedge Plastic extrusion device
GB1481745A (en) * 1974-12-11 1977-08-03 Adhesive Tapes Ltd Hot material applicator
US4067481A (en) * 1976-04-27 1978-01-10 Benjamin Feldman Hand-holdable gun for longitudinal extrusion of a thermoplastic-type medium therefrom and removable heat sleeve therefor
DE2752525A1 (en) * 1976-11-24 1978-06-01 Trw Inc Hot melting thermoplastic adhesive applicator - uses two-section chamber for solid adhesive block with heater block in front section
GB1567680A (en) * 1976-11-11 1980-05-21 Total Transportation Apparatus for the application of a first ferromagnetic component

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020907A (en) * 1959-04-01 1962-02-13 Sr Kenneth C Lease Extrusion gun heater
US3665158A (en) * 1970-07-31 1972-05-23 Don T Froedge Plastic extrusion device
GB1481745A (en) * 1974-12-11 1977-08-03 Adhesive Tapes Ltd Hot material applicator
US4067481A (en) * 1976-04-27 1978-01-10 Benjamin Feldman Hand-holdable gun for longitudinal extrusion of a thermoplastic-type medium therefrom and removable heat sleeve therefor
GB1567680A (en) * 1976-11-11 1980-05-21 Total Transportation Apparatus for the application of a first ferromagnetic component
DE2752525A1 (en) * 1976-11-24 1978-06-01 Trw Inc Hot melting thermoplastic adhesive applicator - uses two-section chamber for solid adhesive block with heater block in front section

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056310A2 (en) * 1981-01-09 1982-07-21 Thomas John Wood Cartridge for holding mastic or similar material in an applicator gun
EP0056310A3 (en) * 1981-01-09 1982-09-08 Thomas John Wood Cartridge for holding mastic or similar material in an applicator gun
EP0227280A2 (en) * 1985-11-26 1987-07-01 Nortel Networks Corporation Dispensing containers
EP0227280A3 (en) * 1985-11-26 1988-12-14 Nortel Networks Corporation Dispensing containers
JP2016094006A (en) * 2012-12-05 2016-05-26 ワブルワークス、インコーポレイテッドＷｏｂｂｌｅｗｏｒｋｓ， Ｉｎｃ． Hand-held three-dimensional drawing device
WO2017099884A1 (en) * 2015-12-07 2017-06-15 Spirit Aerosystems, Inc System and method for reducing air ingression into sealant tubes
EP3386644B1 (en) * 2015-12-07 2021-05-19 Spirit AeroSystems, Inc. System and method for reducing air ingression into sealant tubes
CN108787347A (en) * 2017-05-03 2018-11-13 广东省有机硅工程技术研究开发中心 A kind of composite double layer packing element

Also Published As

Publication number Publication date
GB2060780A (en) 1981-05-07

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