EP0030893A1 - Auftraggerät für geschmolzene Materialien, wie z.B. thermoplastische Klebstoffe - Google Patents

Auftraggerät für geschmolzene Materialien, wie z.B. thermoplastische Klebstoffe Download PDF

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Publication number
EP0030893A1
EP0030893A1 EP80401774A EP80401774A EP0030893A1 EP 0030893 A1 EP0030893 A1 EP 0030893A1 EP 80401774 A EP80401774 A EP 80401774A EP 80401774 A EP80401774 A EP 80401774A EP 0030893 A1 EP0030893 A1 EP 0030893A1
Authority
EP
European Patent Office
Prior art keywords
stick
applicator
clamping device
applicator according
restoring force
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
EP80401774A
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English (en)
French (fr)
Other versions
EP0030893B1 (de
Inventor
René Barlogis
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.)
FRANCAISE D' AGRAFAGE INDUSTRIEL SOFRAGRAF Ste
Original Assignee
FRANCAISE D' AGRAFAGE INDUSTRIEL SOFRAGRAF Ste
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 FRANCAISE D' AGRAFAGE INDUSTRIEL SOFRAGRAF Ste filed Critical FRANCAISE D' AGRAFAGE INDUSTRIEL SOFRAGRAF Ste
Publication of EP0030893A1 publication Critical patent/EP0030893A1/de
Application granted granted Critical
Publication of EP0030893B1 publication Critical patent/EP0030893B1/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
    • B05C17/00523—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
    • 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
    • B05C17/00526—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 material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
    • B05C17/0053—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 material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17119—Feed type

Definitions

  • the present invention relates to devices, generally made in the form of guns and which are used to dispense, in small quantities, molten materials such as thermoplastics, for example glues, waxes, etc.
  • These devices which are commonly called “applicators”, include a heating chamber provided at one end with a dispensing nozzle and, at the other, with an inlet tube in which a stick of material is engaged. to distribute.
  • this stick When this stick is inserted into the chamber, either by hand or by means of a suitable device, for example pneumatic or mechanical, it gradually melts, also acting as a piston to expel the molten material. through the dispensing nozzle.
  • a suitable device for example pneumatic or mechanical
  • the latter is generally fitted with a check valve.
  • the stick If the stick is not given the possibility of moving back a few millimeters in order to compensate for the expansion of the material, the latter, pressurized in the heating chamber, forces the check valve and leaves the nozzle in the form of a leak, what to avoid.
  • the main objective of the present invention is to remedy the drawbacks which have just been explained.
  • the inlet tubing of the heating chamber is equipped with a clamping device arranged so as to grip the stick some distance upstream from said tubing, in order to be driven by the latter against an elastic restoring force when it advances, then bringing the stick back under the effect of the restoring force, when no thrust is no longer exerted on said stick.
  • the stick is guided and maintained at the entrance to the tubing of the chamber, which facilitates its introduction into the applicator.
  • it is called back a few millimeters, which compensates for the expansion of the molten material and, even, creates a slight depression in the heating chamber, guaranteeing the sealing of the nozzle closure.
  • a gun-shaped applicator comprises a frame 1 in the barrel of which is mounted a heating chamber 2, supplied with electric current by means of conductors which are has not been represented so as not to complicate the drawing and which are connected to a cord 3 emerging from the butt 4 of the frame.
  • the heating chamber ends, in a usual manner, by a dispensing nozzle 5 provided with a non-illustrated check valve and, at the rear, it is extended by a manifold. entered 6 which ends in a sleeve 7 of poor heat conductive material, for example a polytetrafluoroethylene (Teflon). It is into this sleeve that the rods 8 of product to be dispensed are introduced, for example thermoplastic glue.
  • Teflon polytetrafluoroethylene
  • the sleeve 7 is provided with a collar 9 by which it abuts on a partition 10 of the frame, which it passes through without appreciable play.
  • the frame comprises a chamber 11 limited by a wall 12 that the rear end of the sleeve 7 passes through an orifice 13 in which said sleeve passes with clearance.
  • a pinching device 14 On the rear end of the sleeve 7 is threaded a pinching device 14. This device has a central portion which passes with little clearance in the orifice 13 and is provided with a flange 15 abutting on the internal face of the wall 12.
  • Said central portion is extended, in the chamber 11, by divergent fins 16, for example two in number and diametrically opposed.
  • divergent fins 16 for example two in number and diametrically opposed.
  • the central portion of the device 14 is extended by arms 17, for example also two in number, but offset by 90 ° with respect to the fins 16.
  • These arms 17 end in jaws 18 whose edges 19 are curved, as shown in FIG. 2, and located at rest on a circumference of diameter less than that of the sticks 8.
  • edges 19 are bevelled so as to facilitate the introduction of the rods between the jaws but to hang on said rods when they tend to move back.
  • the pinching device 14 is preferably made of rigid and elastic synthetic material, for example polyamide.
  • This movement is however accompanied by a forward drive of the clamping device 14 whose jaws 18 grip the stick, drive which allows the elasticity of the fins 16.
  • the stick can however slide on the jaws 18 to sink in the heating chamber as the molten material is expelled through the nozzle 5.
  • the elastic fins 16 straighten and make the device 14 move back with the stick, in the opposite direction to the arrow F, by a few millimeters.
  • This retraction of the stick compensates for the expansions and causes, in the heating chamber, a suction effect which prevents any untimely exit of molten material by the nozzle 5.
  • the stick is kept in the correct position at the inlet of the sleeve 7.
  • FIGS. 4 and 5 works in the same way as the embodiment which has just been described.
  • the clamping device 14 is this time produced in three parts, namely two half-shells 20 and a spring 21.
  • the half-shells 20 each have an arm 17 terminated by a jaw 18 with a bevelled edge 19, like the corresponding elements of the embodiment described above.
  • Their base 22 bears against the wall 12, in the chamber 11, under the effect of the spring 21, in order to ensure the tightening.
  • the spring 21 also abuts on the partition 10 and surrounds the sleeve 7.
  • a centering surface 23 is provided for the spring 21 at the rear of each of the half-shells 20.
  • the latter can be made of metal, by example a light alloy.
  • the elastic clamping device 14 can be adapted to applicators in which the sticks 8 are moved by an appropriate device and either by direct user push as in the previous examples.
  • the device 14 here in a single piece like that of FIGS. 1 to 3, is mounted, between the walls 10 and 12, in the chamber 11 of the frame, on the outlet pipe 6 of the heating chamber 2.
  • the arms 17 and the jaws 18 penetrate into the cylinder 25 of the pneumatic device which serves to advance the sticks 8.
  • This pneumatic device which is actuated using a push button 26, comprises, in the usual manner, an annular piston 27 which slides in the cylinder 25 and in which the stick 8 is engaged and gripped by so as to be pushed forward.
  • the compressed air arrives at the rear of the piston by a tube 28, the seal being ensured by seals 29 and 30 which respectively surround the piston 27 and its rod 31.
  • the latter crosses the rear wall 32 of the cylinder 25.
  • an opposing spring 33 centered by a boss 34 of the piston and which rests on the front wall 35 of the cylinder.
  • the device 14 returns to its normal place, making the rod move back, when the piston makes its return stroke under the effect of the spring 33.
  • FIG. 7 where the same type of clamping device has been chosen for reasons of simplicity, the arrangement is the same as in FIGS. 1 to 3, but the frame 1 contains a device at the rear. 'advance 36, of conventional type.
  • This device comprises a toothed cam 37 which a linkage not shown makes it possible to move when acting on a trigger 38 mounted in the butt 4 of the gun.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
EP80401774A 1979-12-14 1980-12-10 Auftraggerät für geschmolzene Materialien, wie z.B. thermoplastische Klebstoffe Expired EP0030893B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7930718 1979-12-14
FR7930718A FR2471221A1 (fr) 1979-12-14 1979-12-14 Applicateur de matieres fondues telles que des colles thermoplastiques

Publications (2)

Publication Number Publication Date
EP0030893A1 true EP0030893A1 (de) 1981-06-24
EP0030893B1 EP0030893B1 (de) 1984-06-13

Family

ID=9232790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401774A Expired EP0030893B1 (de) 1979-12-14 1980-12-10 Auftraggerät für geschmolzene Materialien, wie z.B. thermoplastische Klebstoffe

Country Status (6)

Country Link
US (1) US4379516A (de)
EP (1) EP0030893B1 (de)
JP (1) JPS56129053A (de)
BR (1) BR8008067A (de)
ES (1) ES267085Y (de)
FR (1) FR2471221A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077071A1 (de) * 1981-10-12 1983-04-20 Reinhard Ursprung Pistolenförmiges Handwerkzeug
WO1985002793A1 (en) * 1983-12-22 1985-07-04 Bostik Limited Melt dispensers
US4706852A (en) * 1985-06-12 1987-11-17 Usm Corporation Inlet sleeve for hot-melt dispensers

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2113345B (en) * 1982-01-21 1985-09-18 British United Shoe Machinery Apparatus for feeding adhesive in rod form
US4692587A (en) * 1986-02-19 1987-09-08 Spirk Jr John W Hand tool and support
DE8613376U1 (de) * 1986-05-16 1986-06-26 Ursprung, Reinhard, 8088 Eching Heißkleberpistole mit mechanischem Vorschub
US5067887A (en) * 1987-08-07 1991-11-26 Black & Decker Inc. Hot-melt adhesive recycling system
US4951846A (en) * 1989-02-02 1990-08-28 Minnesota Mining And Manufacturing Company Hot melt applicator with anti-drip mechanism
US5462206A (en) * 1994-10-12 1995-10-31 Kwasie; Jon B. Melting assembly for thermoplastic materials
US5971212A (en) * 1997-10-27 1999-10-26 Drader; Clarence H. Apparatus for welding thermoplastics by high pressure injection
US6457606B1 (en) * 2000-01-27 2002-10-01 Bright Solutions, Inc. Method and device for introducing fluid material into a climate control system
US7775403B2 (en) * 2005-08-31 2010-08-17 Robert Bosch Gmbh Power hand tool having a retractable front stand
US9643200B2 (en) * 2014-12-19 2017-05-09 Richard A. Belanger Squeeze container liquid extrusion tool
CN107159530A (zh) * 2017-06-16 2017-09-15 奉化市威优特电器有限公司 一种热熔胶枪的加热装置
US10486186B2 (en) * 2018-03-14 2019-11-26 Adhesive Technologies, Inc. No-drip hot melt glue gun

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1153941A (en) * 1965-08-11 1969-06-04 Bostik Ltd Improvements in or relating to Devices For Dispensing Molten Thermoplastic Compositions
FR2155953A1 (de) * 1971-10-08 1973-05-25 Usm Corp
US3774817A (en) * 1971-03-10 1973-11-27 Thermotech Inc Hot melt adhesive applicator
FR2285932A1 (fr) * 1974-09-26 1976-04-23 Transworld Adhesive Chemical C Appareil distributeur d'adhesif
FR2364696A1 (fr) * 1976-09-17 1978-04-14 Terrell Corp Dispositif d'application d'une matiere thermoplastique fusible
DE2915225A1 (de) * 1978-05-11 1979-11-22 Halle Rationalisierung Veb Schmelzklebstoff-auftragsgeraet
DE2829598A1 (de) * 1978-07-05 1980-01-24 Hilti Ag Schmelzklebepistole

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3188056A (en) * 1964-05-04 1965-06-08 Pyles Ind Inc Cartridge type plural component mixing and dispensing device
US3774814A (en) * 1971-10-26 1973-11-27 Star Kist Foods Metering apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1153941A (en) * 1965-08-11 1969-06-04 Bostik Ltd Improvements in or relating to Devices For Dispensing Molten Thermoplastic Compositions
US3774817A (en) * 1971-03-10 1973-11-27 Thermotech Inc Hot melt adhesive applicator
FR2155953A1 (de) * 1971-10-08 1973-05-25 Usm Corp
FR2285932A1 (fr) * 1974-09-26 1976-04-23 Transworld Adhesive Chemical C Appareil distributeur d'adhesif
FR2364696A1 (fr) * 1976-09-17 1978-04-14 Terrell Corp Dispositif d'application d'une matiere thermoplastique fusible
DE2915225A1 (de) * 1978-05-11 1979-11-22 Halle Rationalisierung Veb Schmelzklebstoff-auftragsgeraet
DE2829598A1 (de) * 1978-07-05 1980-01-24 Hilti Ag Schmelzklebepistole

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077071A1 (de) * 1981-10-12 1983-04-20 Reinhard Ursprung Pistolenförmiges Handwerkzeug
WO1985002793A1 (en) * 1983-12-22 1985-07-04 Bostik Limited Melt dispensers
US4639155A (en) * 1983-12-22 1987-01-27 Usm Corporation Melt dispensers
EP0277303A1 (de) * 1983-12-22 1988-08-10 Bostik Limited Schmelzklebstoff-Auftragsgerät
AU577566B2 (en) * 1983-12-22 1988-09-29 Emhart Australia Pty. Limited. Melt dispensers
US4706852A (en) * 1985-06-12 1987-11-17 Usm Corporation Inlet sleeve for hot-melt dispensers

Also Published As

Publication number Publication date
FR2471221A1 (fr) 1981-06-19
ES267085Y (es) 1983-11-16
FR2471221B1 (de) 1984-09-07
ES267085U (es) 1983-04-16
JPS56129053A (en) 1981-10-08
US4379516A (en) 1983-04-12
BR8008067A (pt) 1981-06-23
EP0030893B1 (de) 1984-06-13

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