EP0061507B1 - Dispositif de fusion et d'application pour une colle fusible - Google Patents

Dispositif de fusion et d'application pour une colle fusible Download PDF

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Publication number
EP0061507B1
EP0061507B1 EP81102312A EP81102312A EP0061507B1 EP 0061507 B1 EP0061507 B1 EP 0061507B1 EP 81102312 A EP81102312 A EP 81102312A EP 81102312 A EP81102312 A EP 81102312A EP 0061507 B1 EP0061507 B1 EP 0061507B1
Authority
EP
European Patent Office
Prior art keywords
melting
applicator
wall
chamber
disposed
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.)
Expired
Application number
EP81102312A
Other languages
German (de)
English (en)
Other versions
EP0061507A1 (fr
Inventor
Anton Abt
Alfred Dettelbach
Gerhard Gresser
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.)
Reich Spezialmaschinen GmbH
Original Assignee
Reich Spezialmaschinen 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
Application filed by Reich Spezialmaschinen GmbH filed Critical Reich Spezialmaschinen GmbH
Priority to AT81102312T priority Critical patent/ATE14281T1/de
Priority to EP81102312A priority patent/EP0061507B1/fr
Publication of EP0061507A1 publication Critical patent/EP0061507A1/fr
Application granted granted Critical
Publication of EP0061507B1 publication Critical patent/EP0061507B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • DE-B-27 31 799 discloses a melting and application device of the type mentioned at the outset in connection with an edge banding machine, in which, however, the hot-melt adhesive is only removed from the upper area of the feed channel when the adhesive is removed briefly. A dormant hotmelt adhesive layer is thus formed in the lower region, the adhesive properties of which are greatly impaired by the continuous action of heat. Defective hotmelt adhesive can also get into the application device from this area and influence the adhesive strength between the workpiece and the edge band. It is also not guaranteed that the hot melt temperature can be optimally adjusted to the different hot melt types.
  • Another known melting and application device is a device for high melting performance, in which the liquid hot melt adhesive is conveyed by a separate gear pump. If no hot melt adhesive is removed via the application devices, the excess hot melt adhesive is returned by the continuously running pump. As a result, the hot melt adhesive is naturally subject to constant heating and its adhesive strength is impaired. This hot melt adhesive is also exposed in its storage chamber to the atmospheric ambient air, so that there is a risk of decomposition by oxidation.
  • This known device also has a complicated structure and large dimensions, so that it is not suitable for attachment to an edge banding machine and for the frequently changing removal of liquid hotmelt adhesive.
  • the invention is therefore based on the object of providing a melting and application device of the type mentioned at the beginning for melt adhesives, in which a continuous and complete removal of the melted hot melt adhesive is ensured and which permits the highest possible amount of melting. This object is achieved by the features specified in the characterizing part of claim 1.
  • the forced inflow of the hot melt adhesive in the lower area of the feed channel ensures that the hot melt adhesive is not only removed from the upper area, but that the entire amount of the melted hot melt adhesive reaches the application device. This ensures that only flawless hot melt adhesive is available.
  • the arrangement of the temperature sensor also in the lower area ensures reliable temperature control for the different types of hot melt.
  • the temperature sensor is always flushed around by the flowing hot melt adhesive and is influenced both by its temperature and by the temperature of the melting wall or an advantageously used melt insert.
  • a control characteristic curve for the melting temperature of the melting wall is thus automatically formed from these two temperature values.
  • a material with high thermal conductivity such as. B. uses a light metal alloy, then the heat of the heater is communicated to the hot melt adhesive particularly quickly. This has a particularly favorable effect when commissioning the edge banding machine, since the heating-up time for the melt application is very short until the edge banding machine starts.
  • the application device it is possible to manufacture the application device from a metallic material of high strength and thus to achieve a long service life for this application device.
  • these high strength metallic materials are poor heat conductors, their use as a melt insert would significantly increase the times for heating and cooling.
  • the use of different materials for the application device and for the melt insert therefore advantageously corresponds to both the mechanical and the thermal requirements of the entire device.
  • FIG. 1 shows an application device 1 as it is used for applying liquid hot-melt adhesive in an edge banding machine, not shown, to the narrow side surface of a plate-shaped workpiece.
  • a wedge-shaped nozzle body 2 is provided with application bores 3, which open into a feed channel 4 (see also FIG. 2).
  • the application of the hot melt adhesive is controlled in a known manner by means of a rotary slide valve 5, the nozzle body 2 is heated by a heating element 6, the temperature of which is controlled by a temperature sensor 7.
  • a melting device 8 is connected to the application device 1 (FIG. 2), which essentially has a melting chamber 9 and a melting insert 10. This closes the melting chamber 9 with its melting wall 11, against which the hot-melt adhesive unit 13 is pressed by means of a delivery piston 12.
  • the cylindrical melting insert 10 is with screws 14 on the nozzle body 2 of the order direction 1 attached (Fig. 1 and 3).
  • the melting wall 11 facing the melting chamber 9 is formed by melting pins 15 (see also FIG. 4) which are distributed uniformly and symmetrically over the cross section of the melting insert 10.
  • the melting insert 10 is curved so concavely that a storage chamber 16 is formed.
  • This storage chamber 16 is divided in the middle by vertical webs 17 which begin at the upper edge of the storage chamber 16 and end at a certain distance from the lower edge of the storage chamber.
  • a temperature sensor 19 is conductively connected.
  • This temperature sensor 19 influences heating elements 20 which are used to heat the melting insert 10. Since this is made of a light metal alloy, the heat of the heating elements 20 is quickly passed on to the melting wall 11.
  • the melting insert 10 is penetrated by vertical channels 21, which partially extend into the melting pins 15. They thus connect the melting chamber 9 to the storage chamber 16.
  • the hot melt adhesive is applied via a wedge-shaped nozzle body.
  • this application can also be carried out by means of a glue roller, to which the hot-melt adhesive, as described, is fed via the feed channel 4.
  • the melting device according to the invention together with known application guns for hot melt adhesives, such as are used in particular in the manufacture of furniture.

Landscapes

  • Coating Apparatus (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)

Claims (3)

1. Dispositif de fusion et d'application pour colle à fusion, notamment pour machines à plaquer les chants au défilé, avec une chambre de fusion (9), à l'extrémité - faisant face au dispositif d'application (1) - de laquelle est disposée une paroi de fusion (11) chauffable, dotée d'orifices de sortie et d'un piston d'alimentation (12) mobile logé dans la chambre de fusion, piston qui comprime la colle de fusion solide contre la paroi de fusion (11) de telle manière que celle-ci fond en partie et est acheminée sous pression au dispositif d'application (1), via un conduit d'alimentation disposé derrière la paroi de fusion (11), caractérisé par le fait que derrière la paroi de fusion (11) est disposée une chambre d'approvisionnement (16), connue en soi, dans laquelle s'engage une rallonge du conduit d'alimentation (4), limitée par des traverses (17), et débouche, avec son orifice d'admission, dans la zone de la chambre d'approvisionnement (16) opposée au dispositif d'application (1) et que, dans la chambre d'approvisionnement (16), à proximité de l'orifice d'admission du conduit d'alimentation (4), se trouve une sonde pyrométrique (19) pour la commande du dispositif de chauffage (20) destiné à la paroi de fusion (11).
2. Dispositif de fusion et d'application d'après la revendication n° 1, caractérisé par le fait que le corps de buse (2) du dispositif d'application (1) une pièce de fusion insérée (10) avoisinant la paroi de fusion (11) sont faits de divers matériaux métalliques et que la pièce de fusion insérée (10) est échangeable tout en étant reliée au dispositif d'application (1).
3. Dispositif de fusion et d'application d'après la revendication n° 1 ou 2, caractérisé par le fait que la pièce de fusion insérée (10) présente une saillie (18) s'engageant dans la zone de la chambre d'approvisionnement (16), opposée au dispositif d'application (1), saillie à laquelle est reliée la sonde pyrométrique (19) destinée à la commande du dispositif de chauffage (20) pour la pièce de fusion insérée (10).
EP81102312A 1981-03-27 1981-03-27 Dispositif de fusion et d'application pour une colle fusible Expired EP0061507B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT81102312T ATE14281T1 (de) 1981-03-27 1981-03-27 Schmelz- und auftragsvorrichtung fuer schmelzkleber.
EP81102312A EP0061507B1 (fr) 1981-03-27 1981-03-27 Dispositif de fusion et d'application pour une colle fusible

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81102312A EP0061507B1 (fr) 1981-03-27 1981-03-27 Dispositif de fusion et d'application pour une colle fusible

Publications (2)

Publication Number Publication Date
EP0061507A1 EP0061507A1 (fr) 1982-10-06
EP0061507B1 true EP0061507B1 (fr) 1985-07-17

Family

ID=8187635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102312A Expired EP0061507B1 (fr) 1981-03-27 1981-03-27 Dispositif de fusion et d'application pour une colle fusible

Country Status (2)

Country Link
EP (1) EP0061507B1 (fr)
AT (1) ATE14281T1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342254A1 (fr) * 1988-05-18 1989-11-23 Nordson Corporation Dispositif pour fondre des matières thermoplastiques, en particulier des adhésifs
CN102092076B (zh) * 2010-12-07 2012-08-22 东莞市南兴家具装备制造股份有限公司 自动封边机的供胶装置
CN115041360B (zh) * 2022-06-21 2023-05-02 诸暨市万昇建设有限公司 一种pur热熔胶烫金机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773496A (en) * 1951-12-21 1956-12-11 American Can Co Machine for melting and feeding solidified materials
DE2031122A1 (de) * 1969-07-09 1971-01-28 Kambonan Jacob Simon, West New ton. Mass (VStA) Vorrichtung zur Ausgabe geschmolzenen thermoplastischen Klebstoffs, insbe sondere Schuhzement
FR2225258A1 (en) * 1973-04-13 1974-11-08 Chauvin Arnoux Sa Pre heating hopper for granulated moulding matls - incorporating a fluidised region to generate a temp controlled melt feed
US3877610A (en) * 1974-02-01 1975-04-15 Ornsteen Chemicals & Textiles Hot melt cartridge adhesive gun
US3964645A (en) * 1975-02-12 1976-06-22 Nordson Corporation Apparatus for melting and dispensing thermoplastic material
DE2731799C3 (de) * 1977-07-14 1984-10-18 Reich Spezialmaschinen GmbH, 7440 Nürtingen Kantenanleimmaschine mit einer Schmelzkammer

Also Published As

Publication number Publication date
EP0061507A1 (fr) 1982-10-06
ATE14281T1 (de) 1985-08-15

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