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EP1243345B1 - Edge-gluing machine - Google Patents

Edge-gluing machine Download PDF

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Publication number
EP1243345B1
EP1243345B1 EP02005046A EP02005046A EP1243345B1 EP 1243345 B1 EP1243345 B1 EP 1243345B1 EP 02005046 A EP02005046 A EP 02005046A EP 02005046 A EP02005046 A EP 02005046A EP 1243345 B1 EP1243345 B1 EP 1243345B1
Authority
EP
European Patent Office
Prior art keywords
metering rod
longitudinal
glue
adhesive
outlet slit
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 - Lifetime
Application number
EP02005046A
Other languages
German (de)
French (fr)
Other versions
EP1243345A2 (en
EP1243345A3 (en
Inventor
Hans Kaser
Gerhard Pittrich
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.)
OTT VERWALTUNGS GmbH
Original Assignee
OTT Verwaltungs 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 OTT Verwaltungs GmbH filed Critical OTT Verwaltungs GmbH
Priority to DE20203827U priority Critical patent/DE20203827U1/en
Publication of EP1243345A2 publication Critical patent/EP1243345A2/en
Publication of EP1243345A3 publication Critical patent/EP1243345A3/en
Application granted granted Critical
Publication of EP1243345B1 publication Critical patent/EP1243345B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00Applying adhesives or glue to surfaces of wood to be joined
    • B27G11/02Glue vessels; Apparatus for warming or heating glue
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/006Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to the edges of essentially flat articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D5/00Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/003Other working of veneer or plywood specially adapted to veneer or plywood securing a veneer strip to a panel edge

Definitions

  • the invention relates to a glue pot for a Kantenleimmaschine with a glue head, the interior of which opens outwardly via an exit slot, and arranged outside the glue head in front of the exit slot applicator roll, wherein between the applicator roller and the outlet slot, a rotatable metering rod is arranged.
  • the adhesive flows e.g. from a parent funnel down with gravity.
  • Glueing basins are known from the prior art in which the glue from above is fed by gravity to the glue head.
  • This glue pot usually have next to an applicator roll a dosing for dosing the adhesive with rotating applicator roll.
  • the roller is designed both for a rotation in synchronism with the direction of movement of the workpiece and for a rotation in the opposite direction to the latter, it is known to provide two dosing rods. Leakage of the adhesive when the roller is stationary is prevented by applying a metering edge of the corresponding metering rod directly to the applicator roll.
  • the applicator roll and the metering rods thus form together with the glue head a constructive unit that is difficult to dismantle and only by specialized personnel. This is particularly the case with the use of adhesives, which entail increased cleaning and maintenance, such as e.g. with reactive PUR adhesives, a big disadvantage.
  • Document DE4216191 relates to a machine for coating elongate workpieces in a continuous process, comprising a coating device for applying a hotmelt adhesive layer to a coating material, a hot melt adhesive chamber arranged in the application device, an applicator roll scooping from said hot melt adhesive chamber, and a layer thickness on the applicator roller determining metering device.
  • the invention has for its object to provide a glue pot with structurally simple means in which a
  • Leakage of the adhesive is prevented regardless of the applicator roll at a standstill and accurate metering of the adhesive during operation with a high degree of automation is possible.
  • the sealing of the glue head is achieved at standstill of the applicator roll with only one dosing.
  • the applicator roll can be easily disassembled and reassembled, which is necessary in particular when using PUR adhesive for frequent cleaning. It is achieved a full-surface seal between dosing and glue head, which is guaranteed at all adhesive temperatures.
  • the glue pot according to the invention is easy to disassemble and thus easy to maintain for the use of different adhesives.
  • the simple use of replacement parts is possible, which can only be used with certain adhesives, such as e.g. the applicator roll.
  • the dosing rod can also be easily adjusted in both directions of rotation to allow precise metering of the glue application when the applicator roll is moved in synchronism with or in opposition to the workpiece.
  • the adjustment can preferably be set by a control device as a function of operating parameters that are stored in a memory. Because the setting of the dosing rod can be independent of other elements, the integration of the control of the metering rod in an automation is easy.
  • the control device may also be based on default parameters for the exact position of the metering rod and other operating parameters of Kantenleimmaschine, eie. determine the thickness of the board, the feed rate, etc., the amount of adhesive, the determined amount of adhesive can be used for further automation steps or for the "Lerfahren" of the glue head is required when closing a funnel or a supply channel, so that no unneeded adhesive must be disposed of.
  • the glue pot 10 as a reservoir on a heated funnel 12, the interior of which 13 tapers downwards.
  • the funnel 12 has a rectangular cross section, wherein the right in Fig. 1 side wall 15 of the funnel 12 extends vertically. On its underside, the funnel 12 is bounded by a horizontal bottom wall 17. Adjacent to the vertical side wall 15, a vertically arranged tubular connecting piece 19 is formed on the bottom wall 17, the interior of which communicates with the interior 13 of the funnel 12 and which opens down into an outlet opening 21.
  • the tubular connecting piece 19 is inserted into a complementarily formed section 23 of larger diameter of a vertical passage opening, which is formed in a parallelepiped-shaped intermediate layer 22, wherein the area surrounding the neck 19 of the underside of the funnel 12 rests against the intermediate layer 22.
  • Coaxial to the section 23 includes a portion 25 of smaller diameter, which is aligned with the outlet opening 21, wherein the nozzle 19 rests with its lower end face at the transition between the sections 23 and 24.
  • the heat-insulating intermediate layer 22 rests on a rectangular PUR supply device 14.
  • a horizontal supply channel 27 is formed, which opens into a vertical passage opening 29 in the PUR supply device 14.
  • the passage opening 29 is aligned with the passage opening 25 and the outlet opening 21 of the funnel 12.
  • the supply passage 27 is sealed by a threaded screw 31.
  • a vertical filling tube 82 is arranged coaxially over the neck 19, which extends through the top cover 90 of the funnel 12 upwards and between a lower Closed position (Fig. 3) and an upper release position (Fig. 3.1) is movable.
  • the nozzle At the mouth of the interior of the nozzle 19 in the interior 13 of the funnel 12, the nozzle has an upwardly flared chamfer 92 on which the filling tube 82 in the closed position with its lower end sealingly abuts, so that a supply of adhesive in the nozzle 19 is prevented.
  • the lower end side of the filling tube 82 is at a distance from the nozzle, so that adhesive can run into the nozzle 19.
  • two continuous hose connection openings 32, 34 are arranged, which are in each case connected to a hose connection line 36 and 38 with check valves, via which two different adhesives can be supplied.
  • another intermediate layer 24 is another intermediate layer 24 in the region of the passage opening 29, which has a passage opening 40 which is aligned with the passage opening 29.
  • a block-shaped glue head 16 is arranged, which rests with its upper side on the underside of the intermediate layer 24.
  • the glue head 16 has an inner space 51 which ends at the top of the glue head 16 in an inlet opening 44, into which the through-opening 40 of the heat-insulating layer 24 opens.
  • a vertical exit slot 46 is provided, on which a rotatable dosing rod 48 is adjacent, whose axis of rotation is vertical.
  • the upper end face of the metering rod 48 abuts against the intermediate layer 24, while the lower end of the metering rod 48 is mounted in a substantially cylindrical recess 50 in the glue head.
  • axis 54 Extending coaxially from the upper end face of the metering rod 48 is an axis 54 which passes through a passage opening 52 in the intermediate layer 24 and outside the PUR supply device 14 is arranged. As indicated by a phantom line, the axle 54 is connected to a stepping motor 56 which is operated by a controller (not shown).
  • an applicator roll 58 Adjacent to the metering rod 48 to the outside an applicator roll 58, whose axis of rotation is also vertical.
  • the application roller 58 is rotatably mounted in a fixed above the glue head 16 bearing block 60, with which it is easy to disassemble.
  • the applicator roll 58 is connected to a rotary motor (not shown), upon actuation of which the roller 58 can be rotated in synchronism with the direction of movement of a workpiece 80 or in opposition to it.
  • the total cylindrical dosing rod 48 has at its two ends in each case a cylindrical portion 74 and 76, between which a longitudinal section 75 extends with Vietnamesesegmentförmigem (here semi-circular) cross-section, whereby a recess 62 is also formed with a Vietnamesesegmentförmigem (here semi-circular) cross-section whose Function will be explained below with reference to FIGS. 4 to 8 in more detail.
  • the exit slot 46 is defined by two opposing parallel longitudinal side walls 70, 72 which are concave, the radius of curvature corresponding to the radius of the end portions 74, 76 of the metering rod 48, so that the upper cylindrical one shown in FIG End portion 74 and the lower cylindrical end portion 76, between which the longitudinal portion 75 is of the same radius, rests against the longitudinal side walls 70, 72 of the exit slot 46.
  • the roller 58 is arranged so that it bears against the end portions 74, 76.
  • the temperature of the funnel 12, the PUR supply device 14 and the glue head 16 can be controlled independently via a respective heating device which has multiply arranged heating cartridges and temperature sensors, of which only the heating cartridges 78 of the PUR supply device 14 are shown in FIG.
  • the heaters and the stepping motor 56 are connected to and controlled by a controller (not shown).
  • the funnel 12 is filled with adhesive granules, which also enters the glue head 16. Subsequently, the funnel 12 and the glue head 16 are heated to a suitable temperature, so that the adhesive within the glue head 16 and the adhesive in the funnel 12 is melted. These two zones are heated by the control devices according to a defined program and kept at the appropriate temperature.
  • the glue head 16 is always completely filled with glue and therefore always has a defined amount of glue. In funnel 12, depending on the refill interval, a different fill level is present.
  • the heating of the hopper 12 is controlled by the controller so that the temperature of the present in the hopper 12 adhesive is lowered so far that the adhesive can not fall further after closing the filling tube.
  • the remaining amount of glue in the glue head 16 is minimal.
  • the funnel 12 can now be removed from the intermediate layer 22 and replaced by a new funnel, which is filled with the other adhesive.
  • the funnel is provided with appropriate insulation.
  • the heating of the funnel 12 is controlled by the control means by means of a program "funnel change" so that this can be done without major loss of time.
  • the hopper 12 is easily disassembled or re-assembled at the intermediate layer 22 via a manually operated locking.
  • the funnel to be loaded can be connected to order management via a separate control loop or heating circuit and activated in advance, so that the funnel change and the use of the new adhesive can take place with extremely little time interruption. This can in turn be combined with the "change funnel" command.
  • the funnel 12 For the change of adhesive, it is therefore only necessary to replace a cheap and easy-to-use part, namely the funnel 12.
  • the manipulation is very simple.
  • the defined amount of glue in the glue head 16 further driving the machine with the new adhesive paint easily possible.
  • the old work order can be interrupted in a timely manner, the funnel can be changed, the new adhesive can be melted in the new funnel and, after releasing the old order, finished with the defined residual quantity of the old adhesive.
  • the conversion phase to the new order is expected only with a minimal mixing of the adhesive. This can be easily optimized by means of corresponding data links with order processing as well as consumption quantity calculations performed on the machine.
  • the PUR adhesive is from a separate treatment unit, which transported from a heated tank of a pump and a heated transport hose under controllable pressure via one of the terminals 36 and 38 in the now heated supply channel 14 and filled by pressure quickly the passage opening 29 and flows then in the glue head 16.
  • the processing of the adhesive takes place in a similar manner as that of the thermoplastic adhesive.
  • the funnel 12 may be filled with fusible cleaning granules be filled, wherein upon execution of a program "wash program" by the controller, the heater of the funnel 12 is activated.
  • the molten cleaning agent is guided through the through opening 29, the glue head 16, the outlet slot 46, the recess 62 of the metering rod 48 to the roller 58, so that all these areas, including the roller 58, can be cleaned.
  • Small amounts of detergent may also be introduced directly through the fill tube 82 when the fill tube 82 is in the closed position.
  • FIGS. 4 and 5 show the case that the roller 58 rotate in synchronism with the movement of the workpiece 80, which is indicated by the corresponding arrows.
  • FIGS. 7 and 8 show the case that the rollers 58 rotate in the counter direction to the moving direction of the workpiece 80.
  • the roller 58 is at a standstill.
  • the dosing rod 48 is in a closed position in which it seals the glue head 16 to the outside.
  • the semicircular recess 62 of the metering rod 48 faces the interior 51 of the glue head 16.
  • the secant of the circular segment-shaped cross section of the longitudinal section 75 of the dosing 48 forming bottom 84 of the recess 62 extends between the concave curvatures of the longitudinal side walls 70, 72 so that the interior 51 of the glue head 16 is sealed airtight to the outside, ie the longitudinal side walls 70, 72 of the Exit slit 46 are formed and spaced so that the longitudinal edges 86, 88 of the Longitudinal portion 75 of the metering rod 48 in this closed position of the metering rod 48 so adjacent to the corresponding longitudinal side wall 70, 72 of the exit slot 46 that the inner space 51 is sealed to the outside.
  • the glue head 16 is filled with PUR adhesive in this position of the dosing rod 48, the PUR adhesive is preserved and leakage of the adhesive is prevented.
  • the roller 58 can be disassembled and cleaned.
  • Figures 4 and 5 show the position of metering rod 48 for the application of adhesive to roller 58, which is in the clockwise direction; in synchronism with the workpiece 80 rotates.
  • the metering rod 48 is rotated from the closed position shown in FIG. 6 counterclockwise so far that the lower longitudinal edge 86 of the longitudinal section 75 in FIG. 6 above the Berühungsuss between the circumferential circle of the roller 58 and the peripheral circle of the metering 48 at a short distance Roller 58 is located, this distance corresponds to the thickness of the applied to the roller 58 adhesive layer.
  • the adhesive is applied in this position from the interior of the glue head 16 via the recess 62 on the roller 58.
  • Fig. 7 shows the position of the metering rod 48 for the application of adhesive to the roller 58, which rotates counterclockwise, ie in the opposite direction to the workpiece 80.
  • the dosing rod is rotated from the position shown in Fig. 6 as far as in the clockwise direction, that in Fig. 6 upper longitudinal edge 88 of the longitudinal portion of the bottom 84 is just below the point of contact of the circumferential circle of the roller 58 and the metering 48.
  • the distance between the longitudinal edge 88 and the circumference of the roller 58 also corresponds here to the thickness of the adhesive layer applied to the roller.
  • Fig. 8 shows the dosing rod 48 in an emptying position for emptying the glue pot 16.
  • the position of the dosing rod 48 substantially corresponds to the position of the dosing rod 48 shown in Fig. 5, but the direction of rotation of the roller is reversed.
  • the adhesive is therefore not applied to the nip at the nip between the longitudinal edge 86 and the roller 58, but discharged through the recess 62 through the nip between the roller 58 and the glue head 16.
  • the metering rod 48 is driven by a stepper motor 56 which is also controlled by the controller. This makes it possible to automatically regulate the position of the dosing rod 48 to the most diverse adhesives and applications if the corresponding data are stored in a database which can be accessed by the control device.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Coating Apparatus (AREA)
  • Package Closures (AREA)
  • Basic Packing Technique (AREA)

Abstract

The rotatable dosing rod(48) of the glue basin which is located between an application roller(58) and outlet slot(46) has a long section(75) with a circle segment shaped cross section. The longitudinal walls of the outlet slot are constructed and spaced apart so that the longitudinal edges of the long section of the dosing rod when the dosing rod is in a closed position lie adjacent to the corresponding walls of the outlet slot so that the inner chamber(51) of the gluing head(16) is outwardly sealed.

Description

Die Erfindung betrifft ein Leimbecken für eine Kantenleimmaschine mit einem Leimkopf, dessen Innenraum über einen Austrittsschlitz nach außen mündet, und einer außerhalb des Leimkopfes vor dem Austrittsschlitz angeordneten Auftragswalze, wobei zwischen der Auftragswalze und dem Austrittsschlitz ein drehbarer Dosierstab angeordnet ist. Der Kleber fließt dabei z.B. von einem übergeordneten Trichter mit Schwerkraft nach unten.The invention relates to a glue pot for a Kantenleimmaschine with a glue head, the interior of which opens outwardly via an exit slot, and arranged outside the glue head in front of the exit slot applicator roll, wherein between the applicator roller and the outlet slot, a rotatable metering rod is arranged. The adhesive flows e.g. from a parent funnel down with gravity.

Aus dem Stand der Technik sind Leimbecken bekannt, bei denen der Leim von oben durch Schwerkraft dem Leimkopf zugeführt wird. Diese Leimbecken besitzen in der Regel neben einer Auftragswalze einen Dosierstab zum Dosieren des Klebers bei drehender Auftragswalze. Wenn die Walze sowohl für eine Drehung im Gleichlauf mit der Bewegungsrichtung des Werkstücks als auch für eine Drehung im Gegenlauf zu dieser ausgelegt ist, ist es bekannt, zwei Dosierstäbe vorzusehen. Ein Auslaufen des Klebers bei stillstehender Walze wird durch Anlegen einer Dosierkante des entsprechenden Dosierstabes direkt an die Auftragswalze verhindert. Die Auftragswalze und die Dosierstäbe bilden somit zusammen mit dem Leimkopf eine konstruktive Einheit, die nur schwer und nur durch Fachpersonal zu demontieren ist. Dies ist insbesondere bei der Verwendung von Klebern, die einen erhöhten Reinigungs- und Wartungsaufwand mit sich bringen, wie z.B. bei reaktiven PUR-Klebern, ein großer Nachteil.Glueing basins are known from the prior art in which the glue from above is fed by gravity to the glue head. This glue pot usually have next to an applicator roll a dosing for dosing the adhesive with rotating applicator roll. When the roller is designed both for a rotation in synchronism with the direction of movement of the workpiece and for a rotation in the opposite direction to the latter, it is known to provide two dosing rods. Leakage of the adhesive when the roller is stationary is prevented by applying a metering edge of the corresponding metering rod directly to the applicator roll. The applicator roll and the metering rods thus form together with the glue head a constructive unit that is difficult to dismantle and only by specialized personnel. This is particularly the case with the use of adhesives, which entail increased cleaning and maintenance, such as e.g. with reactive PUR adhesives, a big disadvantage.

Das Dokument DE4216191 betrifft eine Maschine zum Beschichten bzw. Ummanteln von langgestreckten Werkstücken im Durchlauf, mit einem Auftragsgerät zum Aufbringen einer Schmelzklebstoffschicht auf ein Beschichtungs- bzw. Ummantelungsmaterial, mit einer in dem Auftragsgerät angeordneten Schmelzklebstoffkammer, einer aus dieser Schmelzklebstoffkammer schöpfenden Auftragswalze sowie einer die Schichtdicke auf der Auftragswalze bestimmenden Dosiereinrichtung.Document DE4216191 relates to a machine for coating elongate workpieces in a continuous process, comprising a coating device for applying a hotmelt adhesive layer to a coating material, a hot melt adhesive chamber arranged in the application device, an applicator roll scooping from said hot melt adhesive chamber, and a layer thickness on the applicator roller determining metering device.

Der Erfindung liegt die Aufgabe zugrunde, mit konstruktiv einfachen Mitteln ein Leimbecken zu schaffen, bei dem einThe invention has for its object to provide a glue pot with structurally simple means in which a

Auslaufen des Klebers unabhängig von der Auftragswalze bei Stillstand verhindert und eine genaue Dosierung des Klebers während des Betriebes mit hohem Automatisierungsgrad ermöglicht wird.Leakage of the adhesive is prevented regardless of the applicator roll at a standstill and accurate metering of the adhesive during operation with a high degree of automation is possible.

Diese Aufgabe wird durch ein Leimbecken mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen des erfindungsgemäßen Leimbeckens sind Gegenstand der Patentansprüche 2 bis 6.This object is achieved by a glue pot with the features of claim 1. Advantageous developments of the glue pot according to the invention are the subject of claims 2 to 6.

Bei dem erfindungsgemäßen Leimbecken wird das Abdichten des Leimkopfes bei Stillstand der Auftragswalze mit nur einem Dosierstab erreicht. Nach Abdichten des Leimkopfes kann die Auftragswalze auf einfache Weise demontiert und wieder montiert werden, was insbesondere bei der Verwendung von PUR-Kleber zur häufigen Reinigung notwendig ist. Es wird eine vollflächige Abdichtung zwischen Dosierstab und Leimkopf erreicht, die bei allen Klebertemperaturen gewährleistet ist.In the glue pot according to the invention, the sealing of the glue head is achieved at standstill of the applicator roll with only one dosing. After sealing the glue head, the applicator roll can be easily disassembled and reassembled, which is necessary in particular when using PUR adhesive for frequent cleaning. It is achieved a full-surface seal between dosing and glue head, which is guaranteed at all adhesive temperatures.

Das erfindungsgemäße Leimbecken ist leicht demontierbar und somit wartungsfreundlich für die Verwendung unterschiedlichster Kleber. Es ist die einfache Verwendung von Tauschteilen möglich, die nur bei bestimmten Klebern eingesetzt werden können, wie z.B. die Auftragswalze.The glue pot according to the invention is easy to disassemble and thus easy to maintain for the use of different adhesives. The simple use of replacement parts is possible, which can only be used with certain adhesives, such as e.g. the applicator roll.

Der Dosierstab kann außerdem auf einfache Weise in beide Drehrichtungen verstellt werden, um eine genaue Dosierung des Leimauftrags zu ermöglichen, wenn die Auftragswalze im Gleichlauf mit dem Werkstück oder im Gegenlauf zu diesem bewegt wird.The dosing rod can also be easily adjusted in both directions of rotation to allow precise metering of the glue application when the applicator roll is moved in synchronism with or in opposition to the workpiece.

Die Verstellung kann vorzugsweise von einer Steuereinrichtung abhängig von Betriebsparametern eingestellt werden, die in einem Speicher hinterlegt sind. Da die Einstellung des Dosierstabes unabhängig von anderen Elementen erfolgen kann, ist die Einbindung der Steuerung des Dosierstabes in eine Automatisierung einfach.The adjustment can preferably be set by a control device as a function of operating parameters that are stored in a memory. Because the setting of the dosing rod can be independent of other elements, the integration of the control of the metering rod in an automation is easy.

Die Steureinrichtung kann auch anhand von Vorgabeparametern für die genaue Stellung des Dosierstabes sowie weiteren Betriebsparametern der Kantenleimmaschine, eie z.B. die Plattenstärke, die Vorschubgeschwindigkeit etc. die Klebermenge ermitteln, wobei die ermittelte Klebermenge für weitere Automatisierungsschritte verwendet werden kann oder für das "Lerfahren" des Leimkopfes bei Verschließen eines Trichters oder eines Versorgungskanals benötigt wird, so dass kein nicht benötigter Kleber entsorgt werden muss.The control device may also be based on default parameters for the exact position of the metering rod and other operating parameters of Kantenleimmaschine, eie. determine the thickness of the board, the feed rate, etc., the amount of adhesive, the determined amount of adhesive can be used for further automation steps or for the "Lerfahren" of the glue head is required when closing a funnel or a supply channel, so that no unneeded adhesive must be disposed of.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand von Zeichnungen näher erläutert. Es zeigt:

Fig. 1
im Längsschnitt ein Leimbecken für eine Kantenleimmaschine,
Fig. 2
eine linke Seitenansicht des Leimbeckens von Fig. 1;
Fig. 3
das Leimbecken von Fig. 1 mit einem Füllrohr in Freigabestellung;
Fig. 3.1
das Leimbecken von Fig. 1 mit einem Füllrohr in Schließstellung;
Fig. 4
den Schnitt IV-IV von Fig. 1;
Fig. 5
das Detail V von Fig. 4, wobei sich ein Dosierstab in einer ersten Stellung befindet;
Fig. 6
das Detail V von Fig. 4, wobei sich der Dosierstab in einer zweiten Stellung befindet;
Fig. 7
das Detail V von Fig. 4, wobei sich der Dosierstab in einer dritten Stellung befindet und
Fig. 8
das Detail V von Fig. 4, wobei sich der Dosierstab in einer vierten Stellung befindet.
An embodiment of the invention will be explained below with reference to drawings. It shows:
Fig. 1
in longitudinal section a glue pot for an edge banding machine,
Fig. 2
a left side view of the glue pot of Fig. 1;
Fig. 3
the glue pot of Figure 1 with a filling tube in the release position.
Fig. 3.1
the glue pot of Figure 1 with a filling tube in the closed position.
Fig. 4
the section IV-IV of Fig. 1;
Fig. 5
detail V of Fig. 4, wherein a metering rod is in a first position;
Fig. 6
the detail V of Figure 4, wherein the Dosierstab is in a second position;
Fig. 7
the detail V of Fig. 4, wherein the Dosierstab is in a third position and
Fig. 8
the detail V of Fig. 4, wherein the dosing rod is in a fourth position.

Wie es in Fig. 1 gezeigt ist, weist das Leimbecken 10 als Vorratsbehälter einen beheizbaren Trichter 12 auf, dessen Innenraum 13 sich nach unten verjüngt. Der Trichter 12 hat einen rechteckförmigen Querschnitt, wobei sich die in Fig. 1 rechte Seitenwand 15 des Trichters 12 vertikal erstreckt. An seiner Unterseite wird der Trichter 12 durch eine waagerechte Bodenwand 17 begrenzt. Angrenzend an die vertikale Seitenwand 15 ist an der Bodenwand 17 ein vertikal angeordneter rohrförmiger Stutzen 19 ausgebildet, dessen Innenraum mit dem Innenraum 13 des Trichters 12 in Verbindung steht und der nach unten in eine Austrittsöffnung 21 mündet. Der rohrförmige Stutzen 19 ist in einen komplementär ausgebildeten Abschnitt 23 größeren Durchmessers einer vertikalen Durchgangsöffnung eingesetzt, die in einer quaderförmigen Zwischenlage 22 ausgebildet ist, wobei der den Stutzen 19 umgebende Bereich der Unterseite des Trichters 12 an der Zwischenlage 22 anliegt. An den Abschnitt 23 schließt koaxial ein Abschnitt 25 mit geringeren Durchmesser an, der mit der Austrittsöffnung 21 fluchtet, wobei der Stutzen 19 mit seiner unteren Stirnseite am Übergang zwischen den Abschnitten 23 und 24 anliegt. Die wärmeisolierende Zwischenlage 22 liegt auf einer quaderförmigen PUR-Zufuhreinrichtung 14 auf. In der PUR-Zufuhreinrichtung 14 ist ein waagerechter Versorgungskanal 27 ausgebildet, der in eine vertikale Durchgangsöffnung 29 in der PUR-Zufuhreinrichtung 14 mündet. Die Durchgangsöffnung 29 fluchtet mit der Durchgangsöffnung 25 und der Austrittsöffnung 21 des Trichters 12. Auf der der Durchgangsöffnung 29 entgegengesetzten Seite ist der Versorgungskanal 27 durch eine Gewindeschraube 31 abgedichtet.As shown in Fig. 1, the glue pot 10 as a reservoir on a heated funnel 12, the interior of which 13 tapers downwards. The funnel 12 has a rectangular cross section, wherein the right in Fig. 1 side wall 15 of the funnel 12 extends vertically. On its underside, the funnel 12 is bounded by a horizontal bottom wall 17. Adjacent to the vertical side wall 15, a vertically arranged tubular connecting piece 19 is formed on the bottom wall 17, the interior of which communicates with the interior 13 of the funnel 12 and which opens down into an outlet opening 21. The tubular connecting piece 19 is inserted into a complementarily formed section 23 of larger diameter of a vertical passage opening, which is formed in a parallelepiped-shaped intermediate layer 22, wherein the area surrounding the neck 19 of the underside of the funnel 12 rests against the intermediate layer 22. Coaxial to the section 23 includes a portion 25 of smaller diameter, which is aligned with the outlet opening 21, wherein the nozzle 19 rests with its lower end face at the transition between the sections 23 and 24. The heat-insulating intermediate layer 22 rests on a rectangular PUR supply device 14. In the PUR supply device 14, a horizontal supply channel 27 is formed, which opens into a vertical passage opening 29 in the PUR supply device 14. The passage opening 29 is aligned with the passage opening 25 and the outlet opening 21 of the funnel 12. On the side opposite the passage opening 29, the supply passage 27 is sealed by a threaded screw 31.

Wie es insbesondere in den Fig. 3 und 3.1 zu erkennen ist, ist koaxial über dem Stutzen 19 ist ein vertikales Füllrohr 82 angeordnet, das sich durch die obere Abdeckung 90 des Trichters 12 hindurch nach oben erstreckt und zwischen einer unteren Schließstellung (Fig. 3) und einer oberen Freigabestellur (Fig. 3.1) bewegbar ist. An der Mündung des Innenraums des Stutzens 19 in den Innenraum 13 des Trichters 12 weist der Stutzen eine sich nach oben erweiternde Fase 92 auf an der das Füllrohr 82 in der Schließstellung mit seiner unteren Stirnseite abdichtend anliegt, so dass eine Zufuhr von Kleber in den Stutzen 19 verhindert wird. In der Freigabestellung befindet sich die untere Stirnseite des Füllrohrs 82 im Abstand zum Stutzen, so dass Kleber in den Stutzen 19 einlaufen kann.As can be seen in particular in FIGS. 3 and 3.1, a vertical filling tube 82 is arranged coaxially over the neck 19, which extends through the top cover 90 of the funnel 12 upwards and between a lower Closed position (Fig. 3) and an upper release position (Fig. 3.1) is movable. At the mouth of the interior of the nozzle 19 in the interior 13 of the funnel 12, the nozzle has an upwardly flared chamfer 92 on which the filling tube 82 in the closed position with its lower end sealingly abuts, so that a supply of adhesive in the nozzle 19 is prevented. In the release position, the lower end side of the filling tube 82 is at a distance from the nozzle, so that adhesive can run into the nozzle 19.

In der Unterseite der PUR-Zufuhreinrichtung 14 sind zwei durchgehende Schlauchanschlußöffnungen 32, 34 angeordnet, die jeweils mit einer Schlauchanschlußleitung 36 bzw. 38 mit Sperrventilen in Verbindung stehen, über die zwei verschiedene Kleber zugeführt werden können. An der Unterseite der PUR-Zufuhreinrichtung 14 liegt eine weitere Zwischenlage 24 im Bereich der Durchgangsöffnung 29 an, die eine Durchgangsöffnung 40 aufweist, die mit der Durchgangsöffnung 29 fluchtet.In the underside of the PUR supply device 14, two continuous hose connection openings 32, 34 are arranged, which are in each case connected to a hose connection line 36 and 38 with check valves, via which two different adhesives can be supplied. At the bottom of the PUR supply device 14 is another intermediate layer 24 in the region of the passage opening 29, which has a passage opening 40 which is aligned with the passage opening 29.

Unterhalb der Zwischenlage 24 ist ein blockförmiger Leimkopf 16 angeordnet, der mit seiner Oberseite an der Unterseite der Zwischenlage 24 anliegt. Der Leimkopf 16 weist einen Innenraum 51 auf, der an der Oberseite des Leimkopfes 16 in einer Einlauföffnung 44 endet, in die die Durchgangsöffnung 40 der Wärmeisolierlage 24 mündet. In der in Fig. 1 rechten Seite des Leimkopfes 16 ist ein vertikaler Austrittsschlitz 46 vorgesehen, an dem ein drehbarer Dosierstab 48 angrenzt, dessen Drehachse vertikal verläuft. Das obere Stirnende des Dosierstabes 48 liegt an der Zwischenlage 24 an, während das untere Ende des Dosierstabes 48 in einer im wesentlichen zylinderförmigen Ausnehmung 50 in dem Leimkopf gelagert ist. Von der oberen Stirnseite des Dosierstabes 48 erstreckt sich koaxial eine Achse 54, die durch eine Durchgangsöffnung 52 in der Zwischenlage 24 hindurchgeht und außerhalb der PUR-Zufuhreinrichtung 14 angeordnet ist. Wie durch eine strichpunktierte Linie angedeutet ist, ist die Achse 54 mit einem Schrittmotor 56 verbunden, der durch eine Steuereinrichtung (nicht gezeigt) betrieben wird.Below the intermediate layer 24, a block-shaped glue head 16 is arranged, which rests with its upper side on the underside of the intermediate layer 24. The glue head 16 has an inner space 51 which ends at the top of the glue head 16 in an inlet opening 44, into which the through-opening 40 of the heat-insulating layer 24 opens. In the right in Fig. 1 side of the glue head 16, a vertical exit slot 46 is provided, on which a rotatable dosing rod 48 is adjacent, whose axis of rotation is vertical. The upper end face of the metering rod 48 abuts against the intermediate layer 24, while the lower end of the metering rod 48 is mounted in a substantially cylindrical recess 50 in the glue head. Extending coaxially from the upper end face of the metering rod 48 is an axis 54 which passes through a passage opening 52 in the intermediate layer 24 and outside the PUR supply device 14 is arranged. As indicated by a phantom line, the axle 54 is connected to a stepping motor 56 which is operated by a controller (not shown).

An den Dosierstab 48 grenzt nach außen eine Auftragswalze 58 an, deren Drehachse ebenfalls vertikal verläuft. Die Auftragswalze 58 ist in einem oberhalb des Leimkopfes 16 befestigten Lagerbock 60 drehbar gelagert, mit dem sie leicht demontierbar ist. Die Auftragswalze 58 ist mit einem Drehmotor (nicht gezeigt) verbunden, bei dessen Betätigung die Walze 58 im Gleichlauf mit der Bewegungsrichtung eines Werkstückes 80 oder im Gegenlauf zu dieser gedreht werden kann.Adjacent to the metering rod 48 to the outside an applicator roll 58, whose axis of rotation is also vertical. The application roller 58 is rotatably mounted in a fixed above the glue head 16 bearing block 60, with which it is easy to disassemble. The applicator roll 58 is connected to a rotary motor (not shown), upon actuation of which the roller 58 can be rotated in synchronism with the direction of movement of a workpiece 80 or in opposition to it.

Der insgesamt zylindrische Dosierstab 48 weist an seinen beiden Enden jeweils einen zylindrischen Abschnitt 74 bzw. 76, zwischen denen sich ein Längsabschnitt 75 mit kreissegmentförmigem (hier halbkreisförmigem) Querschnitt erstreckt, wodurch eine Ausnehmung 62 mit ebenfalls kreissegmentförmigem (hier halbkreisförmigem) Querschnitt gebildet wird, deren Funktion nachstehend anhand der Fig. 4 bis 8 näher erläutert wird.The total cylindrical dosing rod 48 has at its two ends in each case a cylindrical portion 74 and 76, between which a longitudinal section 75 extends with kreissegmentförmigem (here semi-circular) cross-section, whereby a recess 62 is also formed with a kreissegmentförmigem (here semi-circular) cross-section whose Function will be explained below with reference to FIGS. 4 to 8 in more detail.

Wie es in den Figs. 4 bis 8 gezeigt ist, wird der Austrittsschlitz 46 durch zwei gegenüberliegende parallele Längsseitenwände 70, 72 begrenzt, die konkav ausgebildet sind, wobei der Krümmungsradius dem Radius der Endabschnitte 74, 76 des Dosierstabes 48 entspricht, so daß der in Fig. 1 gezeigte obere zylindrische Endabschnitt 74 und der untere zylindrische Endabschnitt 76, zwischen denen sich der Längsabschnitt 75 mit gleichem Radius befindet, an den Längsseitenwänden 70, 72 des Austrittsschlitzes 46 anliegt. Die Walze 58 ist so angeordnet, daß sie an den Endabschnitten 74, 76 anliegt.As shown in Figs. 4-8, the exit slot 46 is defined by two opposing parallel longitudinal side walls 70, 72 which are concave, the radius of curvature corresponding to the radius of the end portions 74, 76 of the metering rod 48, so that the upper cylindrical one shown in FIG End portion 74 and the lower cylindrical end portion 76, between which the longitudinal portion 75 is of the same radius, rests against the longitudinal side walls 70, 72 of the exit slot 46. The roller 58 is arranged so that it bears against the end portions 74, 76.

Die Temperatur des Trichters 12, der PUR-Zufuhreinrichtung 14 sowie des Leimkopfes 16 sind unabhängig über eine jeweilige Heizeinrichtung regelbar, die mehrfach angeordnete Heizpatronen sowie Temperaturfühler aufweist, von denen in Fig. 2 nur die Heizpatronen 78 der PUR-Zufuhreinrichtung 14 gezeigt sind.The temperature of the funnel 12, the PUR supply device 14 and the glue head 16 can be controlled independently via a respective heating device which has multiply arranged heating cartridges and temperature sensors, of which only the heating cartridges 78 of the PUR supply device 14 are shown in FIG.

Die Heizeinrichtungen sowie der Schrittmotor 56 sind mit einer Steuereinrichtung (nicht gezeigt) verbunden und werden von dieser geregelt.The heaters and the stepping motor 56 are connected to and controlled by a controller (not shown).

Zur Auftragung von thermoplastischem Kleber auf das Werkstück 80 wird der Trichter 12 mit Klebergranulat gefüllt, das auch in den Leimkopf 16 eintritt. Anschließend werden der Trichter 12 und der Leimkopf 16 auf eine geeignete Temperatur beheizt, so daß der Kleber innerhalb des Leimkopfes 16 sowie der Kleber im Trichter 12 aufgeschmolzen wird. Dabei werden diese beiden Zonen durch die Steuereinrichtungen nach einem definierten Programm aufgeheizt und auf der geeigneten Temperatur gehalten. Der Leimkopf 16 ist immer mit Kleber völlig gefüllt und besitzt daher immer eine definierte Klebermenge. Im Trichter 12 ist je nach Nachfüllinterval ein unterschiedlicher Füllstand vorhanden.To apply thermoplastic adhesive to the workpiece 80, the funnel 12 is filled with adhesive granules, which also enters the glue head 16. Subsequently, the funnel 12 and the glue head 16 are heated to a suitable temperature, so that the adhesive within the glue head 16 and the adhesive in the funnel 12 is melted. These two zones are heated by the control devices according to a defined program and kept at the appropriate temperature. The glue head 16 is always completely filled with glue and therefore always has a defined amount of glue. In funnel 12, depending on the refill interval, a different fill level is present.

Wenn beispielsweise ein neuer thermoplastischer Kleber der gleichen Kleberart auf das Werkstück 80 aufgetragen werden soll, der jedoch eine andere Farbe wie der bisherige Kleber besitzt, wird die Beheizung des Trichters 12 mit der Steuereinrichtung so geregelt, daß die Temperatur des sich im Trichter 12 befindlichen Klebers so weit abgesenkt wird, daßder Kleber nach Schließen des Füllrohrs nicht weiter absinken kann. Die verbleibende Klebermenge im Leimkopf 16 ist minimal. Zum Wechseln des Klebers kann nun der Trichter 12 von der Zwischenlage 22 abgenommen und durch einen neuen Trichter ersetzt werden, der mit dem anderen Kleber gefüllt ist.For example, if a new thermoplastic adhesive of the same type of adhesive to be applied to the workpiece 80, but has a different color as the previous adhesive, the heating of the hopper 12 is controlled by the controller so that the temperature of the present in the hopper 12 adhesive is lowered so far that the adhesive can not fall further after closing the filling tube. The remaining amount of glue in the glue head 16 is minimal. To change the adhesive, the funnel 12 can now be removed from the intermediate layer 22 and replaced by a new funnel, which is filled with the other adhesive.

Der Trichter ist dazu mit einer entsprechenden Isolierung versehen.The funnel is provided with appropriate insulation.

Hierzu wird die Beheizung des Trichters 12 durch die Steuereinrichtung mittels eines Programms "Trichter wechseln" so geregelt, daß dies ohne größeren Zeitverlust erfolgen kann. Der Trichter 12 ist an der Zwischenlage 22 über eine manuell zu betätigende Arretierung leicht demontier- bzw. wieder montierbar.For this purpose, the heating of the funnel 12 is controlled by the control means by means of a program "funnel change" so that this can be done without major loss of time. The hopper 12 is easily disassembled or re-assembled at the intermediate layer 22 via a manually operated locking.

Der einzuwechselnde Trichter kann dabei je nach Ausstattungsvariante der Kantenleimmaschine über einen gesonderten Regelkreis bzw. Heizkreis mit einer Auftragsverwaltung verbunden und zeitlich vorversetzt aktiviert werden, so dass der Trichterwechsel und die Verwendung des neuen Klebers mit extrem geringer Zeitunterbrechung erfolgen kann. Dies kann wiederum mit dem Befehl "Trichter wechseln" kombiniert sein.Depending on the equipment variant of the edge banding machine, the funnel to be loaded can be connected to order management via a separate control loop or heating circuit and activated in advance, so that the funnel change and the use of the new adhesive can take place with extremely little time interruption. This can in turn be combined with the "change funnel" command.

Für den Kleberwechsel ist es daher lediglich erforderlich, ein billiges und einfach zu handhabendes Teil, nämlich den Trichter 12 auszuwechseln. Die Manipulation ist denkbar einfach. Darüber hinaus ist durch die definierte Klebermenge im Leimkopf 16 ein Weiterbetreiben der Maschine mit der neuen Kleberfarbe leicht möglich. So kann z.B. der alte Arbeitsauftrag zeitgerecht unterbrochen werden, der Trichter gewechselt werden, der neue Kleber im neuen Trichter aufgeschmolzen und nach der Freigabe der alte Auftrag mit der definierten Restmenge des alten Klebers fertiggestellt werden. In der Umrüstphase auf den neuen Auftrag ist nur mit einer minimalen Vermischung der Kleber zu rechnen. Durch entsprechende Datenkopplungen mit der Auftragsbearbeitung sowie Verbrauchsmengenberechnungen, die an der Maschine durchgeführt werden, ist dies einfach zu optimieren.For the change of adhesive, it is therefore only necessary to replace a cheap and easy-to-use part, namely the funnel 12. The manipulation is very simple. In addition, by the defined amount of glue in the glue head 16 further driving the machine with the new adhesive paint easily possible. For example, the old work order can be interrupted in a timely manner, the funnel can be changed, the new adhesive can be melted in the new funnel and, after releasing the old order, finished with the defined residual quantity of the old adhesive. In the conversion phase to the new order is expected only with a minimal mixing of the adhesive. This can be easily optimized by means of corresponding data links with order processing as well as consumption quantity calculations performed on the machine.

Im weiteren wird die Umstellung des Klebers von einem thermoplastischen Kleber auf einen PUR-Kleber erläutert. Beim Umstellen auf PUR ist anfangs ähnlich vorzugehen wie bei der oben erwähnten Umstellung auf die gleiche Kleberart. Zeitlich optimiert vor Abschluß eines Arbeitsauftrages wird der jeweils in Verarbeitung befindliche Kleber durch die Steuereinrichtung durch ein Programm "PUR-Wechseln" deaktiviert. Der Trichter 12 wird nicht weiter beheizt und das Füllrohr 82 in die Schließstellung bewegt. Der Leimkopf 16 wird weiter beheizt und die sich im Leimkopf 16 befindliche Restklebermenge durch entsprechende Stellung des Dosierstabes 48 (Fig. 8) automatisch entleert. In dem im Leimkopf 16 gebildeten Hohlraum in der Durchgangsöffnung 29 wird PUR-Kleber über den Versorgungskanal 27 eingeschleust. Der PUR-Kleber wird dazu aus einem eigenen Aufbereitungsgerät, das aus einem beheizten Tank einer Pumpe und einem beheizten Transportschlauch unter regelbarem Druck über einen der Anschlüsse 36 bzw. 38 in dem nun beheizten Versorgungskanal 14 transportiert und füllt durch Druckeinwirkung rasch die Durchgangsöffnung 29 und fließt anschließend in den Leimkopf 16. Die Verarbeitung des Klebers erfolgt auf ähnliche Weise wie die des thermoplastischen Klebers.The conversion of the adhesive from a thermoplastic adhesive to a PUR adhesive is explained below. When changing over to PUR, it is necessary to proceed in the same way as in the case of the above-mentioned conversion to the same type of adhesive. Temporally optimized before the completion of a work order, the adhesive currently being processed is deactivated by the control device by means of a "PUR change" program. The funnel 12 is not further heated and the filling tube 82 is moved into the closed position. The glue head 16 is further heated and the quantity of residual adhesive present in the glue head 16 is automatically emptied by a corresponding position of the metering rod 48 (FIG. 8). In the cavity formed in the glue head 16 in the passage opening 29 PUR adhesive is introduced via the supply channel 27. The PUR adhesive is from a separate treatment unit, which transported from a heated tank of a pump and a heated transport hose under controllable pressure via one of the terminals 36 and 38 in the now heated supply channel 14 and filled by pressure quickly the passage opening 29 and flows then in the glue head 16. The processing of the adhesive takes place in a similar manner as that of the thermoplastic adhesive.

Durch die mit den Sperrventilen versehenen Anschlüsse 36, 38 können unterschiedliche Kleber von mehreren Aufbereitungsgeräten eingespeist werden. Diese Geräte können PUR, aber auch alle anderen Schmelzkleberarten verarbeiten, so daß der Leimkopf 16 mit theoretisch beliebig vielen Klebern versorgt werden kann. Dies kann in hochautomatisierten Anlagen von Vorteil sein, bei denen Kosten eine untergeordnete Rolle spielen.By provided with the check valves ports 36, 38 different adhesives can be fed from several processing equipment. These devices can process PUR, but also all other types of hot melt adhesives, so that the glue head 16 can be supplied with theoretically any number of adhesives. This can be beneficial in highly automated plants where costs are of secondary importance.

Bei solchen Anlagen kann gegebenenfalls auf die Füllung des Trichters 12 mit Klebergranulat verzichtet werden. Stattdessen kann der Trichter 12 mit schmelzbarem Reinigungsgranulat befüllt werden, wobei bei Durchführung eines Programm "Spülprogramm" durch die Steuereinrichtung die Heizung des Trichters 12 aktiviert wird.In such systems may optionally be dispensed with the filling of the funnel 12 with adhesive granules. Instead, the funnel 12 may be filled with fusible cleaning granules be filled, wherein upon execution of a program "wash program" by the controller, the heater of the funnel 12 is activated.

Bei Bewegung des Füllrohrs 82 in die Freigabestellung wird das geschmolzene Reinigungsmittel durch die Durchgangsöffnung 29, den Leimkopf 16, den Austrittschlitz 46, die Ausnehmung 62 des Dosierstabes 48 zur Walze 58 geführt, so daß alle diese Bereiche einschließlich der Walze 58 gereinigt werden können. Geringe Mengen an Reinigungsmittel können auch direkt durch das Füllrohr 82 eingebracht werden, wenn sich das Füllrohr 82 in der Schließstellung befindet.When the filling tube 82 is moved to the release position, the molten cleaning agent is guided through the through opening 29, the glue head 16, the outlet slot 46, the recess 62 of the metering rod 48 to the roller 58, so that all these areas, including the roller 58, can be cleaned. Small amounts of detergent may also be introduced directly through the fill tube 82 when the fill tube 82 is in the closed position.

Im folgenden werden anhand der Figs. 4 bis 8 die verschiedenen Drehstellungen des Dosierstabes 48 erläutert.In the following, with reference to Figs. 4 to 8 the different rotational positions of the dosing rod 48 explained.

In den Fig. 4 und 5 ist der Fall dargestellt, daß sich die Walze 58 im Gleichlauf mit der Bewegung des Werkstücks 80 dreht, was durch die entsprechenden Pfeile angedeutet ist. Die Figs. 7 und 8 zeigen den Fall, daß sich die Walzen 58 im Gegenlauf zur Bewegungsrichtung des Werkstücks 80 drehen.In Figs. 4 and 5, the case is shown that the roller 58 rotates in synchronism with the movement of the workpiece 80, which is indicated by the corresponding arrows. The Figs. FIGS. 7 and 8 show the case that the rollers 58 rotate in the counter direction to the moving direction of the workpiece 80.

In Fig. 6 befindet sich die Walze 58 im Stillstand. In diesem Fall befindet sich der Dosierstab 48 in einer Schließstellung, in der er den Leimkopf 16 nach außen abdichtet. In dieser Stellung ist die halbkreisförmige Ausnehmung 62 des Dosierstabes 48 dem Innenraum 51 des Leimkopfes 16 zugewandt. Der die Sekante des kreissegmentförmigen Querschnitts des Längsabschnitts 75 des Dosierstabes 48 bildende Boden 84 der Ausnehmung 62 erstreckt sich zwischen den konkaven Krümmungen der Längsseitenwände 70, 72 so daß der Innenraum 51 des Leimkopfes 16 nach außen luftdicht abgeschlossen ist, d.h die Längsseitenwände 70, 72 des Austrittsschlitzes 46 sind so ausgebildet und im Abstand angeordnet, dass die Längsränder 86, 88 des Längsabschnitts 75 des Dosierstabes 48 in dieser Schliessstellung des Dosierstabes 48 so an die entsprechende Längsseitenwand 70, 72 des Austrittsschlitzes 46 angrenzen, dass der Innenraum 51 nach außen abgedichtet ist.In Fig. 6, the roller 58 is at a standstill. In this case, the dosing rod 48 is in a closed position in which it seals the glue head 16 to the outside. In this position, the semicircular recess 62 of the metering rod 48 faces the interior 51 of the glue head 16. The secant of the circular segment-shaped cross section of the longitudinal section 75 of the dosing 48 forming bottom 84 of the recess 62 extends between the concave curvatures of the longitudinal side walls 70, 72 so that the interior 51 of the glue head 16 is sealed airtight to the outside, ie the longitudinal side walls 70, 72 of the Exit slit 46 are formed and spaced so that the longitudinal edges 86, 88 of the Longitudinal portion 75 of the metering rod 48 in this closed position of the metering rod 48 so adjacent to the corresponding longitudinal side wall 70, 72 of the exit slot 46 that the inner space 51 is sealed to the outside.

Wenn der Leimkopf 16 bei dieser Stellung des Dosierstabes 48 mit PUR-Kleber gefüllt ist, wird der PUR-Kleber konserviert und ein Auslaufen des Klebers verhindert. Die Walze 58 kann demontiert und gereinigt werden.If the glue head 16 is filled with PUR adhesive in this position of the dosing rod 48, the PUR adhesive is preserved and leakage of the adhesive is prevented. The roller 58 can be disassembled and cleaned.

Die Fig. 4 und 5 zeigen die Stellung des Dosierstabes 48 für den Auftrag von Kleber auf die Walze 58, die sich in Uhrzeigerrichtung, d.h. im Gleichlauf mit dem Werkstück 80 dreht. Der Dosierstab 48 ist aus der in Fig. 6 gezeigten Schließstellung soweit gegen die Uhrzeigerrichtung verdreht, daß sich der in Fig. 6 untere Längsrand 86 des Längsabschnitts 75 oberhalb des Berühungspunktes zwischen dem Umfangskreis der Walze 58 und dem Umfangskreis des Dosierstabes 48 in geringem Abstand zur Walze 58 befindet, wobei dieser Abstand der Dicke der auf die Walze 58 aufgetragenen Kleberschicht entspricht. Der Kleber wird in dieser Stellung aus dem Innenraum des Leimkopfes 16 über die Ausnehmung 62 auf die Walze 58 aufgetragen.Figures 4 and 5 show the position of metering rod 48 for the application of adhesive to roller 58, which is in the clockwise direction; in synchronism with the workpiece 80 rotates. The metering rod 48 is rotated from the closed position shown in FIG. 6 counterclockwise so far that the lower longitudinal edge 86 of the longitudinal section 75 in FIG. 6 above the Berühungspunktes between the circumferential circle of the roller 58 and the peripheral circle of the metering 48 at a short distance Roller 58 is located, this distance corresponds to the thickness of the applied to the roller 58 adhesive layer. The adhesive is applied in this position from the interior of the glue head 16 via the recess 62 on the roller 58.

Fig. 7 zeigt die Stellung des Dosierstabes 48 für den Auftrag von Kleber auf die Walze 58, die sich gegen Uhrzeigerrichtung, d.h. im Gegenlauf zum Werkstück 80 dreht. Der Dosierstab ist aus der in Fig. 6 gezeigten Stellung soweit in Uhrzeigerrichtung gedreht, daß sich der in Fig. 6 obere Längsrand 88 des Längsabschnitts des Bodens 84 knapp unterhalb des Berührungspunktes des Umfangskreises der Walze 58 und des Dosierstabs 48 befindet. Der Abstand zwischen dem Längsrand 88 und dem Umfang der Walze 58 entspricht auch hier der Dicke der auf die Walze aufgetragenen Kleberschicht.Fig. 7 shows the position of the metering rod 48 for the application of adhesive to the roller 58, which rotates counterclockwise, ie in the opposite direction to the workpiece 80. The dosing rod is rotated from the position shown in Fig. 6 as far as in the clockwise direction, that in Fig. 6 upper longitudinal edge 88 of the longitudinal portion of the bottom 84 is just below the point of contact of the circumferential circle of the roller 58 and the metering 48. The distance between the longitudinal edge 88 and the circumference of the roller 58 also corresponds here to the thickness of the adhesive layer applied to the roller.

Fig. 8 zeigt den Dosierstab 48 in einer Entleerungstellung zur Entleerung des Leimbeckens 16. Die Stellung des Dosierstabes 48 entspricht im wesentlichen der in Fig. 5 gezeigten Stellung des Dosierstabes 48, wobei jedoch die Drehrichtung der Walze umgekehrt ist. Der Kleber wird daher nicht an dem Spalt zwischen dem Längsrand 86 und der Walze 58 auf die Walze aufgetragen, sondern durch die Ausnehmung 62 durch den Spalt zwischen Walze 58 und Leimkopf 16 abgeführt.Fig. 8 shows the dosing rod 48 in an emptying position for emptying the glue pot 16. The position of the dosing rod 48 substantially corresponds to the position of the dosing rod 48 shown in Fig. 5, but the direction of rotation of the roller is reversed. The adhesive is therefore not applied to the nip at the nip between the longitudinal edge 86 and the roller 58, but discharged through the recess 62 through the nip between the roller 58 and the glue head 16.

Wie oben beschrieben, wird der Dosierstab 48 von einem Schrittmotor 56 angetrieben, der ebenfalls von der Steuereinrichtung gesteuert wird. Hierdurch ist es möglich, die Stellung des Dosierstabes 48 automatisch den verschiedensten Klebern und Applikationen entsprechend zu regeln, wenn die entsprechenden Daten in einer Datenbank hinterlegt werden, auf die die Steuereinrichtung zugreifen kann.As described above, the metering rod 48 is driven by a stepper motor 56 which is also controlled by the controller. This makes it possible to automatically regulate the position of the dosing rod 48 to the most diverse adhesives and applications if the corresponding data are stored in a database which can be accessed by the control device.

Claims (6)

  1. A glue reservoir for an edge-gluing machine, with a gluing head (16), the interior (51) of which opens outwards via an outlet slit (46) bounded by longitudinal side walls (70,72), and with an application roller (58) arranged outside the gluing head (16) in front of the outlet slit (46), wherein a rotatable metering rod (48) is disposed between the application roller (58) and the longitudinal side walls (70,72) of the outlet slit (46), wherein
    - the metering rod (48) has a longitudinal portion (75) of circular segment cross-section, which is defined by longitudinal edges (86,88),
    - the longitudinal side walls (72,74) [sic] of the outlet slit (46) are so formed and arranged at a distance apart that the longitudinal edges (86,88) of the longitudinal portion (75) of the metering rod (48) in a closed position of the metering rod (48), in which the secant line of the circular segment cross-section of the longitudinal portion (75) faces the interior (51) of the gluing head (16), adjoin the corresponding longitudinal side walls (70,72) of the outlet slit (46) so that the interior (51) is sealed from the exterior, characterised in that
    - the metering rod (48) is rotatable so that one longitudinal edge (86) upon rotation of the application roller (58) in one direction and the other longitudinal edge (88) upon rotation of the application roller (58) in the opposite direction is situated at a distance from the application roller (58) corresponding substantially to the thickness of a glue coating.
  2. A glue reservoir according to Claim 1, characterised in that the metering rod (48) is of semicircular cross-section in the vicinity of the longitudinal portion (75).
  3. A glue reservoir according to Claim 1 or 2, characterised in that concave recesses are formed in the longitudinal side walls (70,72) of the outlet slit (46), the radius of curvature of which recesses corresponds to the radius of the circular segment cross-section of the longitudinal portion (75) of the metering rod (48).
  4. A glue reservoir according to any one of the preceding Claims, characterised in that the metering rod (48) is connected to a rotary drive (56) by which the metering rod (48) can be displaced in both directions of rotation.
  5. A glue reservoir according to Claim 4, characterised in that the position of the metering rod (48) can be adjusted by a control device connected to the rotary drive (56) as a function of operating parameters which are stored in a memory.
  6. A glue reservoir according to Claim 5, characterised in that the control device determines the amount of glue on the basis of input parameters for the exact position of the metering rod (48) and also other operating parameters of the edge-gluing machine.
EP02005046A 2001-03-19 2002-03-06 Edge-gluing machine Expired - Lifetime EP1243345B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20203827U DE20203827U1 (en) 2001-03-19 2002-03-08 Glue basin for edge banding machines and storage containers therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20104698U 2001-03-19
DE20104698U DE20104698U1 (en) 2001-03-19 2001-03-19 Glue basin for an edge gluing machine

Publications (3)

Publication Number Publication Date
EP1243345A2 EP1243345A2 (en) 2002-09-25
EP1243345A3 EP1243345A3 (en) 2005-06-22
EP1243345B1 true EP1243345B1 (en) 2006-05-31

Family

ID=7954486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02005046A Expired - Lifetime EP1243345B1 (en) 2001-03-19 2002-03-06 Edge-gluing machine

Country Status (4)

Country Link
EP (1) EP1243345B1 (en)
AT (1) ATE327834T1 (en)
DE (2) DE20104698U1 (en)
ES (1) ES2265460T3 (en)

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DE602005011978D1 (en) * 2004-03-16 2009-02-05 Akzo Nobel Coatings Int Bv METHOD AND MEANS FOR APPLYING A HARDENING ADHESIVE SYSTEM
EP1743777A1 (en) 2005-07-15 2007-01-17 Balti AG Adhesive application station
ITMO20050319A1 (en) * 2005-11-29 2007-05-30 Scm Group Spa DISTRIBUTOR DEVICE OF GLUE
ITMO20060263A1 (en) 2006-08-28 2008-02-29 Scm Group Spa DISTRIBUTOR DEVICE OF GLUE
ITMO20060262A1 (en) * 2006-08-28 2008-02-29 Scm Group Spa DISTRIBUTOR DEVICE OF GLUE
DE202007006546U1 (en) * 2007-04-30 2007-07-12 Weiß Holzmaschinen GmbH Mobile edge-glueing device for sticking edging strips on boards, has an applicator roller and a hot-melt adhesive container in which the melting chamber is divided by a partition into two zones connected by a slot
IT1396482B1 (en) * 2009-11-18 2012-12-14 Biesse Spa METHOD FOR EDGING WOOD OR SIMILAR COMPONENTS.
ITMO20110131A1 (en) * 2011-05-24 2012-11-25 Scm Group Spa EDGING MACHINE
ES2395069B1 (en) * 2011-05-30 2013-10-18 Construcciones Españolas De Herramientas Industriales S.A. PERFECTED GRINDING DEVICE.
CN104138826B (en) * 2014-06-11 2016-06-08 东莞市南兴家具装备制造股份有限公司 A kind of bag sealer rubber-coated mechanism leak-proof device
DE102014211293A1 (en) 2014-06-12 2015-12-17 Henkel Ag & Co. Kgaa Apparatus for the preparation and application of adhesive
EP3213824B1 (en) 2016-03-03 2018-06-27 Robatech AG Device and method for applying an adhesive to a substrate
DE102017111013A1 (en) * 2017-05-19 2018-11-22 Holz-Her Gmbh CEMENT CONTRACT DEVICE
IT201700056951A1 (en) * 2017-05-25 2018-11-25 Biesse Spa MACHINE FOR EDGING WOODEN PANELS OR THE LIKE
DE102019110567A1 (en) * 2019-04-24 2020-10-29 Homag Gmbh Adhesive application device
CN112077979A (en) * 2020-09-29 2020-12-15 合肥志邦家居有限公司 Curved-straight-line edge sealing system and edge sealing method thereof
CN115365066B (en) * 2022-09-22 2023-10-20 广州极东机械有限公司 Glue spreading mechanism capable of switching double-color glue

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DE3447592A1 (en) * 1984-12-28 1986-07-10 Hornberger Maschinenbaugesellschaft mbH & Co KG, 7294 Schopfloch Device for applying hot-melt adhesive to continuously moved workpieces
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DE20004811U1 (en) * 2000-03-16 2000-05-25 H & H Maschinenbau GmbH, 32457 Porta Westfalica Device for applying hot melt adhesives

Also Published As

Publication number Publication date
ATE327834T1 (en) 2006-06-15
ES2265460T3 (en) 2007-02-16
DE50206951D1 (en) 2006-07-06
EP1243345A2 (en) 2002-09-25
DE20104698U1 (en) 2001-05-17
EP1243345A3 (en) 2005-06-22

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