EP0257838A2 - Heisskleber-Pistole - Google Patents

Heisskleber-Pistole Download PDF

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Publication number
EP0257838A2
EP0257838A2 EP87306834A EP87306834A EP0257838A2 EP 0257838 A2 EP0257838 A2 EP 0257838A2 EP 87306834 A EP87306834 A EP 87306834A EP 87306834 A EP87306834 A EP 87306834A EP 0257838 A2 EP0257838 A2 EP 0257838A2
Authority
EP
European Patent Office
Prior art keywords
belt
hot
melt
feed
rod
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
EP87306834A
Other languages
English (en)
French (fr)
Other versions
EP0257838A3 (en
EP0257838B1 (de
Inventor
Willi Borst
Christian Wooge
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.)
Emhart GmbH
Bostik GmbH
Bostik Ltd
Bostik AB
Original Assignee
Emhart GmbH
Bostik GmbH
Bostik Tucker GmbH
Bostik SA
Bostik Ltd
Bostik AB
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 Emhart GmbH, Bostik GmbH, Bostik Tucker GmbH, Bostik SA, Bostik Ltd, Bostik AB filed Critical Emhart GmbH
Publication of EP0257838A2 publication Critical patent/EP0257838A2/de
Publication of EP0257838A3 publication Critical patent/EP0257838A3/en
Application granted granted Critical
Publication of EP0257838B1 publication Critical patent/EP0257838B1/de
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
    • B05C17/00523—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

Definitions

  • This invention relates to dispensers of hot, molten materials of the kind known as hot-melt guns.
  • Such apparatus is usually provided with a melt-body having a melt-chamber in which thermoplastic material is melted, an inlet for the rod of thermoplastic material and an outlet comprising an orifice for dispensing and applying melted material, and means for heating the melt-body so that thermoplastic material fed as a rod into the melt-chamber, where it is then melted, may be dispensed and applied in molten condition from the orifice.
  • Such apparatus finds use in various fields of application, commonly in the form of applicators for hot-melt adhesives and sealants and especially in hot-melt glue-guns having provision for feeding a rod of adhesive, known as a glue-stick, to the melt-body, for example by trigger-operated means.
  • the present invention is concerned with hot-melt guns for melting rods of thermoplastic material and dis­pensing and applying the resulting hot-melt materials, and more particularly is concerned with a hand-held glue-gun comprising improved feeding means adapted to feed hot-melt material in the form of a rod to the melt-body.
  • Rod-feeding means employed in hand-held glue-guns often include a trigger and associated mechanism arranged to grip a rod of composition to be fed, and to advance it towards the melt chamber.
  • An inlet sleeve of resilient material is often provided at the entrance to the melt-chamber to assist in guiding the rod into the melt chamber and also to grip the surface of the rod as it is fed into the melt-chamber to minimise outflow of melted material from the melt-chamber inlet.
  • a hand-held, hot-melt glue-gun having feeding means for feeding a rod of solid, hot-melt material into a melt body, under the control of an operator, in which the feeding means comprises a carriage mounted for movement towards and away from the melt-body, a clamp member pivotally mounted on the carriage and a trigger connected to the clamp member by connecting means and arranged to be operated by the operator to pivot the clamp member into engagement with the rod of hot-melt material supported by the carriage to grip the rod and, on further pressure on the trigger by the operator, to feed the rod into the melt-chamber.
  • the clamp member comprises a knife member by which the rod is engaged in the operation of the feeding means to feed the rod into the melt chamber.
  • the knife member may tend to indent or otherwise distort the rod when excessive pressure is exerted on the trigger.
  • the problem of outflow of melted material from the melt-chamber has long been recognised and deformation of the rod surface by the knife member renders it impossible to rely upon the inlet sleeve to provide sufficient seal on rod entering the melt chamber to prevent melted mater­ial being forced out between the inlet sleeve and the rod.
  • a hot-melt gun provided with trigger-operated feeding means for feeding a solid rod of thermoplastic material to the melt-chamber of said hot-melt gun is characterised by a positive feed mechanism comprising a driven elongated feed member controlled by drive means operated by the trigger, said elongated feed member comprising a driven continuous feed-belt arranged with its longitudinal axis parallel to the axis of the rod of thermoplastic material being fed to the melt-chamber.
  • the feed-belt may be arranged so that one outer face contacts the rod along a substantial part of its length.
  • a second belt is arranged in parallel to contact the opposite side of the rod so that the rod is engaged between the two parallel belts.
  • the second belt may also be driven either by the same motor that drives the feed-belt or by a separate motor or it may function as an idler.
  • the feed-belt may be provided with at least one out-facing engagement member arranged to contact the rod so that the rod is urged to move in the direction of travel of the feed-belt.
  • a "hook-belt” is provided with a plurality of outfacing engagement members (hooks), preferably equispaced around the belt.
  • the driven belts may be powered by suitable means e.g. by hydraulic, pneumatic or clockwork devices but preferably are electrically driven by electric motors which can be arranged to drive one or more belts.
  • the trigger may control the operation of the motor by conventional switching arrangements and these may incorpor­ate control elements such as electronic computer chip devices.
  • Such devices facilitate control of feed rate, can provide for pressure relief to inhibit unwanted outflow from the nozzle ("drool"), enable pre-set amounts to be extruded and also provide safeguards against over­load pressures, over-heating, operation at below optimum temperature and similar undesirable conditions.
  • belt is used to include all similar, continuous structures such as chains which are equally effective.
  • gripper chain lends itself very well to the incorporation of outfacing stud elements to form a hook-belt.
  • Figure 1 illustrates a single-belt feed, where feed-belt 11 is arranged with its longitudinal axis paral­lel to the axis of rod 12 which is a 'glue-stick' com­prising thermoplastic adhesive material.
  • the outer surface of feed-belt 11, which has a corrugated finish to enhance its grip, is in contact with a significant length of the surface of rod 12 and thus, when the feed-belt moves in direction B, the rod is urged in direction D towards the melt-chamber (not shown) of the hot-melt gun.
  • Figure 2 The arrangement of Figure 2 is similar to that of Figure 1 with the addition of a second belt 13 arranged with its axis parallel to that of feed-belt 11 and that of rod 12.
  • Second belt 13 which has the same corrugated finish as feed-belt 11, is in contact with a length of rod 12 opposite to that in contact with feed-belt 11 so that the rod 12 is gripped between the belts 11 and 12 and, when the belts move in direction B, again the rod is urged in direction D.
  • FIG 3 illustrates the so-called "hook-belt” drive in which a driven hook-belt 14 is provided with outfacing projections 15.
  • the hook-belt is similarly arranged with its axis parallel to that of a rod 12 and arranged so that as hook-belt 14 moves in direction B, a projection (or hook) 15 engages end 16 of rod 12 and pushes it in direction D.
  • the glue-gun illustrated in Figures 4, 5 and 6 is a conventional, hand-held glue-gun wherein a handle 21 supports a body 22 containing a melt chamber 23 into which thermoplastic glue material is fed in solid (stick) form through sleeve portion 24.
  • the glue material is melted in melt-chamber 23 by PTC heaters (not shown) and the result­ing molten material is expelled from nozzle 25 by pressure applied to melt-chamber 23 by the feed of solid glue material through sleeve portion 24.
  • the illustrated glue-gun is fitted with feeding-­means according to the present invention by means of which a glue-stick 12 is fed through sleeve portion 24 to melt chamber 23.
  • the feeding means comprise a pair of endless belts 11,11 ⁇ which are located with their longitudinal axes parallel to the axis of glue-stick 12 with their outer, corrugated faces (having transverse ridges) in contact with opposite sides of glue-stick 12.
  • Belt 11 is driven by a drive wheel 26 connected to electric motor 27 through bevel gearing 28.
  • Motor 27 is controlled by trigger 29 through an electronic control device (not shown) which responds not only to trigger 29 but also to the temperature of the molten material in melt-chamber 23, the pressure in melt chamber, the quantity of material fed into melt-chamber 23 through sleeve portion 24, the amount of molten material extruded through nozzle 25 etc.
  • an electronic control device not shown
  • Free-running idler wheels 30 support belt 11 along its length and at the other end. Belt 11 ⁇ acts as an idler and is supported on free-running idler wheels 31.
  • glue-stick 12 is gripped between parallel faces of belts 11,11 ⁇ and thereby constrained to move in the direction of driven belt 11.
  • motor 27 is used to carry glue-stick 12 towards sleeve portion 24 but the electronic control device can be used, for example, to reverse motor 27 so that partial withdrawal of glue-stick 12 reduces the pressure on the material in melt-chamber 23 and so reduces unwanted extrusion ("drooling") of molten material through nozzle 25.
EP87306834A 1986-08-23 1987-07-31 Heisskleber-Pistole Expired - Lifetime EP0257838B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868620535A GB8620535D0 (en) 1986-08-23 1986-08-23 Hot melt guns
GB8620535 1986-08-23

Publications (3)

Publication Number Publication Date
EP0257838A2 true EP0257838A2 (de) 1988-03-02
EP0257838A3 EP0257838A3 (en) 1988-08-31
EP0257838B1 EP0257838B1 (de) 1990-05-09

Family

ID=10603156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87306834A Expired - Lifetime EP0257838B1 (de) 1986-08-23 1987-07-31 Heisskleber-Pistole

Country Status (7)

Country Link
EP (1) EP0257838B1 (de)
JP (1) JPS6362569A (de)
AU (1) AU595918B2 (de)
DE (1) DE3762576D1 (de)
ES (1) ES2015954B3 (de)
GB (1) GB8620535D0 (de)
ZA (1) ZA875884B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0775460A1 (de) * 1995-11-27 1997-05-28 Armstrong World Industries, Inc. Schmelzklebenahtdichtungsverfahren für Bodenbeläge und Produkt
US9731444B2 (en) 2012-12-05 2017-08-15 Wobbleworks, Inc. Hand-held three-dimensional drawing device
CN108355925A (zh) * 2018-05-03 2018-08-03 宁波捷美进出口有限公司 胶枪加热装置
US10040235B2 (en) 2014-12-30 2018-08-07 Wobbleworks, Inc. Extrusion device for three-dimensional drawing
US10391693B2 (en) 2015-04-17 2019-08-27 Wobbleworks, Inc. Distribution of driving pressure about a filament's circumference in an extrusion device
DE102019100405A1 (de) * 2019-01-09 2020-07-09 Bühnen GmbH & Co. KG Klebepistole mit motorischem Antrieb, Verfahren zum Betreiben einer Klebepistole und Verwendung derselben
USD995629S1 (en) 2021-01-29 2023-08-15 Wobble Works, Inc. Drawing tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953755A (en) * 1988-10-03 1990-09-04 Minnesota Mining And Manufacturing Company Automated thermoplastic dispensing device
CN108970925B (zh) * 2018-09-12 2020-10-02 宁波耀升工具实业有限公司 一种快速电热压胶枪

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB904945A (en) * 1957-09-14 1962-09-05 B B Chem Co Ltd Improvements in or relating to cement applying devices
FR2369011A1 (fr) * 1976-11-01 1978-05-26 Usm Corp Dispositif d'alimentation en colle d'un appareil distributeur de colle fusible
DE3341201A1 (de) * 1983-11-14 1985-05-30 Reinhard 8088 Eching Ursprung Klebepistole

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620432A (en) * 1969-09-26 1971-11-16 Vernon V Emery Machine for drawing extruded plastic tubing or rod from an extruder
US4059204A (en) * 1976-10-26 1977-11-22 Usm Corporation System for dispensing and controlling the temperature of hot melt adhesive

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB904945A (en) * 1957-09-14 1962-09-05 B B Chem Co Ltd Improvements in or relating to cement applying devices
FR2369011A1 (fr) * 1976-11-01 1978-05-26 Usm Corp Dispositif d'alimentation en colle d'un appareil distributeur de colle fusible
DE3341201A1 (de) * 1983-11-14 1985-05-30 Reinhard 8088 Eching Ursprung Klebepistole

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0775460A1 (de) * 1995-11-27 1997-05-28 Armstrong World Industries, Inc. Schmelzklebenahtdichtungsverfahren für Bodenbeläge und Produkt
US9731444B2 (en) 2012-12-05 2017-08-15 Wobbleworks, Inc. Hand-held three-dimensional drawing device
US10046498B2 (en) 2012-12-05 2018-08-14 Wobbleworks, Inc. Hand-held three-dimensional drawing device
US10792850B2 (en) 2012-12-05 2020-10-06 Wobbleworks, Inc. Hand-held three-dimensional drawing device
US11446852B2 (en) 2012-12-05 2022-09-20 Wobbleworks, Inc. Hand-held three-dimensional drawing device
US11766819B2 (en) 2012-12-05 2023-09-26 Wobbleworks, Inc. Hand-held three-dimensional drawing device
US10040235B2 (en) 2014-12-30 2018-08-07 Wobbleworks, Inc. Extrusion device for three-dimensional drawing
US10391693B2 (en) 2015-04-17 2019-08-27 Wobbleworks, Inc. Distribution of driving pressure about a filament's circumference in an extrusion device
CN108355925A (zh) * 2018-05-03 2018-08-03 宁波捷美进出口有限公司 胶枪加热装置
CN108355925B (zh) * 2018-05-03 2023-09-12 宁波赤菟科技有限公司 胶枪加热装置
DE102019100405A1 (de) * 2019-01-09 2020-07-09 Bühnen GmbH & Co. KG Klebepistole mit motorischem Antrieb, Verfahren zum Betreiben einer Klebepistole und Verwendung derselben
USD995629S1 (en) 2021-01-29 2023-08-15 Wobble Works, Inc. Drawing tool

Also Published As

Publication number Publication date
EP0257838A3 (en) 1988-08-31
EP0257838B1 (de) 1990-05-09
JPS6362569A (ja) 1988-03-18
ES2015954B3 (es) 1990-09-16
DE3762576D1 (de) 1990-06-13
AU595918B2 (en) 1990-04-12
ZA875884B (en) 1988-08-31
GB8620535D0 (en) 1986-10-01
AU7731987A (en) 1988-02-25

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