EP0383879B1 - A wire gun with a controlled feed device - Google Patents

A wire gun with a controlled feed device Download PDF

Info

Publication number
EP0383879B1
EP0383879B1 EP19890908995 EP89908995A EP0383879B1 EP 0383879 B1 EP0383879 B1 EP 0383879B1 EP 19890908995 EP19890908995 EP 19890908995 EP 89908995 A EP89908995 A EP 89908995A EP 0383879 B1 EP0383879 B1 EP 0383879B1
Authority
EP
European Patent Office
Prior art keywords
wire
gun according
wire gun
motor
feed
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
EP19890908995
Other languages
German (de)
French (fr)
Other versions
EP0383879A1 (en
Inventor
Ralph Herber
Karsten Eichhorn
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.)
Applied Biosystems Inc
Original Assignee
Perkin Elmer Corp
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 Perkin Elmer Corp filed Critical Perkin Elmer Corp
Publication of EP0383879A1 publication Critical patent/EP0383879A1/en
Application granted granted Critical
Publication of EP0383879B1 publication Critical patent/EP0383879B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/18—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the material having originally the shape of a wire, rod or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/30—Devices controlling the forwarding speed to synchronise with supply, treatment, or take-up apparatus

Definitions

  • the invention relates to a wire gun with a feed device for the wire with a drive wheel driven by a motor for the wire and a counter roller pressing the wire against the drive wheel, and with a device for regulating the feed speed of the wire.
  • Such wire guns are used in so-called flame spraying, the wire being fed through the feed device to a gas head with a spray nozzle.
  • the combustion of a gas that has slid into the gas head together with compressed air and oxygen melts and atomizes the wire material, which is expelled through the nozzle together with the burned gas.
  • a the wire-scanning measuring wheel is provided for measuring the actual value of the feed speed
  • the device for regulating the feed speed of the wire comprises a device for changing the contact pressure of the counter roller as a function of a setpoint deviation which cannot be adjusted by the action of the control device on the motor drive.
  • the wire is moved at a constant feed rate, in that by measuring the actual value of the feed rate and by the variability of the contact pressure of the counter roller on the wire, a slippage leading to uneven wire transport between the drive wheel and the wire can be determined and eliminated is.
  • An advantageous embodiment of the invention consists in providing a counter wheel pressing the wire against the measuring wheel for the measuring wheel.
  • This counter wheel can advantageously be mounted together with the counter roller for the drive wheel on a balance beam on which a pressure device which presses the counter roller against the drive wheel and the counter wheel against the measuring wheel acts.
  • the balance beam can be connected to and held by a handlebar with the wall of the housing provided for the wire gun.
  • the pressure device is adjustable along the balance beam, ie the point of application of the force can be displaced.
  • the pressure force of the pressure device which can expediently be designed as a pressure cylinder, can be distributed differently between the counter wheel for the measuring wheel and the counter roller for the drive wheel, and thus the contact pressure with which the counter roller presses the wire against the drive wheel Adjustment of the slip between the wire and the drive wheel vary.
  • the measuring wheel for measuring the actual value of the feed speed of the wire can advantageously be connected to an incremental rotary encoder which emits a digital signal corresponding to the feed speed.
  • This signal can further process a microprocessor system which can advantageously be used for determining before control signals together with the measured value for the speed of the drive motor, which a tachometer to be connected to the drive motor can deliver.
  • the microprocessor system determines control signals which act on a control circuit to be provided for supplying the drive motor with an operating voltage, and on a control device to be provided for changing the contact pressure of the counter roller, in particular for changing the pressure in a pressure cylinder.
  • a wire gun is generally designated 30.
  • a drive motor 1 which drives a drive wheel 2, is fastened to the housing 31.
  • the axis of the drive wheel is fixed.
  • the wire to be conveyed runs between the drive wheel 2 and a counter roller 3, which can be pressed against the drive wheel 2 and for this purpose is mounted with its axis adjustable in a balance beam 4.
  • a measuring wheel 5 is arranged with a likewise fixed axis.
  • a counter wheel 6 is provided, which is also rotatably mounted in the balance beam 4. As can be seen from FIG.
  • the balance beam 4 can be adjusted in height by means of an elongated hole 7 formed in the balance beam on a pin 8 fastened to the housing and at the same time pivotable about the pin 8.
  • the balance beam is also attached to the housing 31 at one end by means of a rocker 9.
  • a pressure cylinder 10 is arranged below the balance beam, which presses against the underside of the balance beam 4 via a plunger 11.
  • the point of engagement of the ram 11 on the balance beam can be changed along the balance beam in that the pressure cylinder 10 is adjustable in the direction of arrow 12 along the balance beam.
  • the wire 13 to be sprayed which is only shown in FIGS.
  • a wire guide 15 which is eccentrically adjustable depending on the different thickness of the wire is held.
  • the wire is inserted into a gas head 16 arranged on the front of the housing, to which 17 different gases are used as heating and transport gases for the atomized material of the wire can be fed.
  • the gas head 16 is held on a gas head holder 18, which is guided in two elongated holes 19 by means of a spindle 20 and can be adjusted in the vertical direction.
  • the adjustment of the gas head serves to adapt the change in the position of the central longitudinal axis of the wire with different wire thicknesses.
  • the counter roller 3 and the counter wheel 6 can be adapted to wires 13 with different diameters by adjusting the balance beam 4 in the vertical direction in FIG. 3.
  • two gear wheels 21 and 22 are shown in FIG. 3, which are arranged on the axles of the drive wheel 2 and the counter roller 3 and are fixedly connected to them.
  • the gear wheels serve for the uniform drive of the counter roller 3.
  • Corresponding gear wheels can be provided for the measuring wheel 4 and the counter wheel 6, although these are not expressly shown in FIG. 3.
  • the control and regulating system for the feed speed of the wire 13 is shown schematically in FIG. 2.
  • the motor 1 is provided with a tachometer 23 which gives information about the speed of the motor via the line 24 to a microprocessor 25 and a line 26 to a control circuit 27.
  • An incremental rotary encoder is connected to the measuring wheel 5 and, when the wire 13 is moved in the longitudinal direction, outputs corresponding digital signals to the microprocessor 25.
  • a pressure control 29 connected to the microprocessor 25 is provided, which is connected to the pressure cylinder 10 via a line 33.
  • the device works as follows:
  • a wire 13 to be sprayed is inserted at the rear of the housing 31 via the opening 14 and between the opposing measuring wheel 5 and counter wheel 6 as well as the drive wheel 2 and the counter roller 3 and advanced into the front gas head 10. Due to the fact that the balance beam 4 is adjustable in the vertical direction, wires with different diameters can also be processed with a fixed axis of the drive wheel 2 and the measuring wheel 5 without the drive wheel and the measuring wheel having to be replaced depending on the thickness of the wire . However, since in such an arrangement the position of the central longitudinal axis of the wire changes as a function of the thickness of the wire, the wire guide opening 15 is adapted to this longitudinal central axis of the wire by an appropriate adjustment and the gas head 16 by adjusting the spindle 20.
  • a corresponding pressure is applied to the pressure cylinder 10, whereby the balance beam 4 is raised and the counter roller and the counter wheel 3 or 6 are pressed against the underside of the wire and press them against the drive wheel or the measuring wheel.
  • the pressure with which the counter roller 3 or the counter wheel 6 press against the wire can be selected differently in that the pressure cylinder 10 is displaced along the arrow 12, whereby the point of application of the plunger 11 of the pressure cylinder is displaced along the balance beam.
  • the previously usual control of the feed speed of the wire 13 was carried out, for example, in that a predetermined feed speed could be assigned to each speed of the motor due to the drive wheel 2 connected to the drive axis of the motor and its known extent.
  • the feed speed of the wire was determined by this regulation of the speed of the motor 1.
  • a slip often occurs between the drive wheel 2 and the wire which occurs in the aforementioned Regulation of the feed speed of the wire is not determined by the device itself. In these cases, a wire with fluctuating feed rates is fed to the gas head. The result is an incorrect coating of the surfaces to be coated.
  • FIG. 4 An operating diagram for a possible embodiment of a control of the type described is shown in FIG. 4.
  • a N difference between the setpoint and the measured actual value of the feed speed of the wire.
  • the next control step according to FIG. 50 will again determine whether the error signal is already 0. If this is the case, there is no need for further regulation. If this is not the case, it is checked again at 51 whether a N ⁇ 0 is possibly present. If this is the case, the engine speed is reduced via 43. If this is not the case, the control according to 52 again gives a control signal to increase the engine speed. If it is determined in the subsequent scanning according to 53 that the error signal a N decreases, it is determined via 54 that the error signal is already 0. If no reduction in the error signal a N can be determined according to the scanning 53, this leads to the finding that the error cannot be achieved by eliminating the slip either. This means that there must be other faults which are not readily ascertainable and which then lead to its automatic switching off of the feed of the wire as a whole according to 55.
  • the 55 additionally contains, in order to limit the faults which are not readily ascertainable, monitoring the current consumption of the drive motor 1 (FIG. 1), which permits a conclusion to be drawn about the mechanical environment (wire guides, wire reel, etc.). This monitoring is constantly active and can be used for further defined error messages.
  • the regulations in 43, 44 and 47 are subject to narrow limits depending on the wire diameter and the wire feed speed. If these limits are exceeded, the wire feed is switched off with defined error messages.

Landscapes

  • Coating By Spraying Or Casting (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

The invention relates to a wire gun with a feed device for the wire with a feed roller for the wire driven by a motor and a counter-roller pressing the wire against the feed roller and a device for controlling the wire feed rate. Prior art wire guns of this kind have the drawback that the wire feed rate is not controlled accurately enough and, in flame treatment, does not result in the sufficiently uniform feed of the wire material to be sprayed. The purpose of the invention is to provide a wire gun with precise feed rate control. This purpose is attained in that there is a measuring wheel scanning the wire to measure the effective feed rate and the device for controlling the wire feed rate includes a device for altering the pressure exerted by the counter-roller dependently upon a deviation from the set value which cannot be controlled by the effect of the control device on the motor drive.

Description

Die Erfindung betrifft eine Drahtpistole mit einer Vorschubeinrichtung für den Draht mit einem von einem Motor angetriebenen Antriebsrad für den Draht und einer den Draht gegen das Antriebsrad drückenden Gegenrolle, sowie mit einer Einrichtung für die Regelung der Vorschubgeschwindigkeit des Drahtes.The invention relates to a wire gun with a feed device for the wire with a drive wheel driven by a motor for the wire and a counter roller pressing the wire against the drive wheel, and with a device for regulating the feed speed of the wire.

Derartige Drahtpistolen kommen beim sogenannten Flammspritzen zum Einsatz, wobei der Draht durch die Vorschubeinrichtung einem Gaskopf mit einer Spritzdüse zugeführt wird. Durch Verbrennung eines zusammen mit Druckluft und Sauerstoff in den Gaskopf eingegleiteten Gases kommt es zum Abschmelzen und Zerstäuben des Drahtmaterial, das zusammen mit dem verbrannten Gas durch die Düse ausgestoßen wird.Such wire guns are used in so-called flame spraying, the wire being fed through the feed device to a gas head with a spray nozzle. The combustion of a gas that has slid into the gas head together with compressed air and oxygen melts and atomizes the wire material, which is expelled through the nozzle together with the burned gas.

Es kommt darauf an, die Vorschubgeschwindigkeit des Drahtes möglichst konstant zu halten, um einen gleichmäßigen Ausstoß des zu verspritzenden Drahtmaterials zu erreichen.It is important to keep the feed speed of the wire as constant as possible in order to achieve a uniform ejection of the wire material to be sprayed.

Bei bekannten Drahtpistolen der eingangs erwähnten Art wird versucht, einen möglichst gleichmäßigen Drahtvorschub durch Regelung bzw. Konstanthaltung der Drehzahl des Antriebsmotors zu erzielen. Es hat sich gezeigt, daß sich durch diese Maßnahme keine ausreichend konstante Vorschubgeschwindigkeit des Drahtes und damit kein gleichmäßiger Ausstoß des zu verspritzenden Drahtmaterials ergibt.In known wire guns of the type mentioned at the outset, attempts are made to achieve a wire feed that is as uniform as possible by regulating or keeping the speed of the drive motor constant. It has been shown that this measure does not result in a sufficiently constant feed rate of the wire and thus no uniform ejection of the wire material to be sprayed.

Es ist die Aufgabe der Erfindung, eine Drahtpistole vorzuschlagen, bei der der Draht mit konstanter Vorschubgeschwindigkeit bewegt wird, und dadurch beim Flammspritzen ein gleichmäßiger Ausstoß des zu verspritzenden Drahtmaterial erreicht wird.It is the object of the invention to propose a wire gun in which the wire is moved at a constant feed rate, and thereby a uniform ejection of the wire material to be sprayed is achieved during flame spraying.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein den Draht abtastendes Meßrad für die Messung des Istwertes der Vorschubgeschwindigkeit vorgesehen ist, und daß die Einrichtung zur Regelung der Vorschubgeschwindigkeit des Drahtes eine Vorrichtung zur Änderung des Anpreßdruckes der Gegenrolle in Abhängigkeit von einer durch Einwirkung der Regelungseinrichtung auf den Motorantrieb nicht einregelbaren Sollwertabweichung umfaßt.This object is achieved in that a the wire-scanning measuring wheel is provided for measuring the actual value of the feed speed, and that the device for regulating the feed speed of the wire comprises a device for changing the contact pressure of the counter roller as a function of a setpoint deviation which cannot be adjusted by the action of the control device on the motor drive.

Durch diese erfindungsgemäße Lösung wird erreicht, daß der Draht mit konstanter Vorschubgeschwindigkeit bewegt wird, indem durch die Messung des Istwertes der Vorschubgeschwindigkeit und durch die Variierbarkeit des Anpreßdrucks der Gegenrolle auf den Draht ein zu ungleichmäßigem Drahttransport führender Schlupf zwischen dem Antriebsrad und der Draht feststellbar und eliminierbar ist.By means of this solution according to the invention it is achieved that the wire is moved at a constant feed rate, in that by measuring the actual value of the feed rate and by the variability of the contact pressure of the counter roller on the wire, a slippage leading to uneven wire transport between the drive wheel and the wire can be determined and eliminated is.

Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, für das Meßrad ein den Draht gegen das Meßrad drückendes Gegenrad vorzusehen. Dieses Gegenrad kann vorteilhaft zusammen mit der Gegenrolle für das Antriebsrad auf einem Waagebalken gelagert werden, an dem eine die Gegenrolle gegen das Antriebsrad und das Gegenrad gegen das Meßrad drückende Andruckvorrichtung angreift.An advantageous embodiment of the invention consists in providing a counter wheel pressing the wire against the measuring wheel for the measuring wheel. This counter wheel can advantageously be mounted together with the counter roller for the drive wheel on a balance beam on which a pressure device which presses the counter roller against the drive wheel and the counter wheel against the measuring wheel acts.

Der Waagebalken kann über einen Lenker mit der Wand des für die Drahtpistole vorgesehenen Gehäuses verbunden und dacurch gehaltert sein.The balance beam can be connected to and held by a handlebar with the wall of the housing provided for the wire gun.

Ein besonderer Vorteil ergibt sich, wenn die Andruckvorrichtung längs des Waagebalkens verstellbar, d.h. der Angriffspunkt der Kraft verschiebbar ist. In diesem Fall läßt sich die Andruckkraft der Andruckvorrichtung, die zweckmäßig als Druckzylinder ausgebildet sein kann, unterschiedlich auf das Gegenrad für das Meßrad und die Gegenrolle für das Antriebsrad verteilen, und damit die Anpreßkraft, mit der die Gegenrolle den Draht gegen das Antriebsrad drückt, zur Einregelung des Schlupfes zwischen dem Draht und dem Antriebsrad variieren.A particular advantage results if the pressure device is adjustable along the balance beam, ie the point of application of the force can be displaced. In this case, the pressure force of the pressure device, which can expediently be designed as a pressure cylinder, can be distributed differently between the counter wheel for the measuring wheel and the counter roller for the drive wheel, and thus the contact pressure with which the counter roller presses the wire against the drive wheel Adjustment of the slip between the wire and the drive wheel vary.

Das Meßrad für die Messung des Istwertes der Vorschubgeschwindigkeit des Drahtes kann vorteilhaft mit einem inkrementalen Drehgeber verbunden sein, der ein der Vorschubgeschwindigkeit entsprechendes digitales Signal abgibt.The measuring wheel for measuring the actual value of the feed speed of the wire can advantageously be connected to an incremental rotary encoder which emits a digital signal corresponding to the feed speed.

Dieses Signal kann ein vorteilhaft für die Ermittlung vor Steuersignalen einsetzbares Mikroprozessorsystem zusammen mit dem Meßwert für die Drehzahl des Antriebsmotors, den ein mit dem Antriebsmotor zu verbindendes Tachometer liefern kann, weiterverarbeiten.This signal can further process a microprocessor system which can advantageously be used for determining before control signals together with the measured value for the speed of the drive motor, which a tachometer to be connected to the drive motor can deliver.

Das Mikroprozessorsystem ermittelt Steuersignale, die auf eine für die Versorgung des Antriebsmotors mit einer Betriebsspannung vorzusehende Steuerschaltung, sowie auf eine vorzusehende Steuervorrichtung für die Änderung des Anpreßdrucks der Gegenrolle, insbesondere für die Druckänderung in einem Druckzylinder, einwirken.The microprocessor system determines control signals which act on a control circuit to be provided for supplying the drive motor with an operating voltage, and on a control device to be provided for changing the contact pressure of the counter roller, in particular for changing the pressure in a pressure cylinder.

Weitere vorteilhafte Ausgestaltungsmöglichkeiten den Erfindung gehen aus den Unteransprüchen hervor.Further advantageous design options of the invention emerge from the subclaims.

Die Erfindung soll nun anhand von Ausführungsbeispieler und der beiliegenden Zeichnung weiter erläutert und beschrieben werden. Es zeigen:

Fig. 1
ein Ausführungsbeispiel für eine erfindungsgemäße Drahtpistole mit einem Gaskopf für Flammspritzen, wobei zur besseren übersicht eine Gehäusewand und Antriebsgetrieberäder weggelassen sind,
Fig. 2
eine schematische Darstellung der Regelung für den Vorschub des Drahtes unter Ausschaltung von Schlupf,
Fig. 3
eine schematische Ausschnittdarstellung der Vorschubeinrichtung mit einer zusätzlich angetriebenen Gegenrolle, und
Fig. 4
ein Wirkungsschema für die Regelung der Drahtvorschubgeschwindigkeit.
The invention will now be explained and described with reference to exemplary embodiments and the accompanying drawings. Show it:
Fig. 1
An embodiment of a wire gun according to the invention with a gas head for flame spraying, a housing wall and drive gear wheels being omitted for a better overview,
Fig. 2
1 shows a schematic representation of the regulation for the advancement of the wire with the elimination of slip,
Fig. 3
is a schematic sectional view of the feed device with an additional driven counter roller, and
Fig. 4
an effect diagram for the regulation of the wire feed speed.

In der Fig. 1 ist mit 30 allgemein eine Drahtpistole bezeichnet. An dem Gehäuse 31 ist ein Antriebsmotor 1 befestigt, der ein Antriebsrad 2 antreibt. Die Achse des Antriebsrades ist feststehend. Der zu fördernde, nicht gezeigte Draht läuft zwischen dem Antriebsrad 2 und einer Gegenrolle 3 durch, die gegen das Antriebsrad 2 gepreßt werden kann und zu diesem Zweck mit ihrer Achse verstellbar in einem Waagebalken 4 gehaltert ist. In Förderungsrichtung des Drahtes vor dem Antriebsrad 2 ist ein Meßrad 5 mit gleichfalls feststehender Achse angeordnet. Zum Andrücken des Drahtes an das Meßrad ist ein Gegenrad 6 vorgesehen, das gleichfalls drehbar in dem Waagebalken 4 gelagert ist. Der Waagebalken 4 ist, wie aus Fig. 3 hervorgeht, mit Hilfe eines in dem Waagebalken ausgebildeten Langloches 7 auf einem an dem Gehäuse befestigten Zapfen 8 höhenverstellbar und gleichzeitig um den Zapfen 8 verschwenkbar. Der Waagebalken ist ferner an einem Ende mit Hilfe einer Schwinge 9 am Gehäuse 31 befestigt. Unterhalb des Waagebalkens ist ein Druckzylinder 10 angeordnet, den über einer Stößel 11 gegen die Unterseite des Waagebalkens 4 drückt. Der Angriffspunkt des Stößels 11 an dem Waagebalken kann dadurch entlang dem Waagebalken verändert werden, daß der Druckzylinder 10 in Richtung des Pfeiles 12 entlang dem Waagebalken verstellbar ist. Der zu versprühende Draht 13, der lediglich in den Fig. 2 und 3 dargestellt ist, wird auf der Rückseite des Gehäuses 31 über eine Öffnung 14 eingeführt, in der eine je nach der unterschiedlichen Dicke des Drahtes exzentrisch verstellbare Drahtführung 15 gehaltert ist. Der Draht wird in einen auf der Vorderseite des Gehäuses angeordneten Gaskopf 16 eingeführt, dem über Zuleitungen 17 verschiedene Gase als Erhitzungs- und Transportgase für das zerstäubte Material des Drahtes zugeführt werden können. Der Gaskopf 16 ist an einer Gaskopfhalterung 18 gehaltert, die in zwei Langlöchern 19 geführt mit Hilfe einer Spindel 20 in senkrechter Richtung verstellbar ist. Die Verstellung des Gaskopfes dient zur Anpassung der Änderung der Lage der Mittellängsachse des Drahtes bei unterschiedlichen Drahtdicken.1, a wire gun is generally designated 30. A drive motor 1, which drives a drive wheel 2, is fastened to the housing 31. The axis of the drive wheel is fixed. The wire to be conveyed, not shown, runs between the drive wheel 2 and a counter roller 3, which can be pressed against the drive wheel 2 and for this purpose is mounted with its axis adjustable in a balance beam 4. In the conveying direction of the wire in front of the drive wheel 2, a measuring wheel 5 is arranged with a likewise fixed axis. To press the wire against the measuring wheel, a counter wheel 6 is provided, which is also rotatably mounted in the balance beam 4. As can be seen from FIG. 3, the balance beam 4 can be adjusted in height by means of an elongated hole 7 formed in the balance beam on a pin 8 fastened to the housing and at the same time pivotable about the pin 8. The balance beam is also attached to the housing 31 at one end by means of a rocker 9. A pressure cylinder 10 is arranged below the balance beam, which presses against the underside of the balance beam 4 via a plunger 11. The point of engagement of the ram 11 on the balance beam can be changed along the balance beam in that the pressure cylinder 10 is adjustable in the direction of arrow 12 along the balance beam. The wire 13 to be sprayed, which is only shown in FIGS. 2 and 3, is introduced into the rear of the housing 31 via an opening 14 in which a wire guide 15 which is eccentrically adjustable depending on the different thickness of the wire is held. The wire is inserted into a gas head 16 arranged on the front of the housing, to which 17 different gases are used as heating and transport gases for the atomized material of the wire can be fed. The gas head 16 is held on a gas head holder 18, which is guided in two elongated holes 19 by means of a spindle 20 and can be adjusted in the vertical direction. The adjustment of the gas head serves to adapt the change in the position of the central longitudinal axis of the wire with different wire thicknesses.

Wie aus Fig. 3 zu ersehen ist, können die Gegenrolle 3 und das Gegenrad 6 durch Verstellung des Waagebalkens 4 in senkrechter Richtung in Fig. 3 an Drähte 13 mit unterschiedlichem Durchmesser angepaßt werden. Zusä:zlich sind in Fig. 3 zwei Getrieberäder 21 und 22 gezeigt, die auf den Achsen der Antriebsrades 2 bzw. der Gegenrolle 3 angeordnet und fest mit diesen verbunden sind. Die Getrieberäder dienen zum gleichmäßigen Antrieb der Gegenrolle 3. Entsprechende Getrieberäder können für das Meßrad 4 sowie das Gegenrad 6 vorgesehen sein, obwohl diese nicht in der Fig. 3 ausdrücklich dargestellt sind.As can be seen from FIG. 3, the counter roller 3 and the counter wheel 6 can be adapted to wires 13 with different diameters by adjusting the balance beam 4 in the vertical direction in FIG. 3. In addition, two gear wheels 21 and 22 are shown in FIG. 3, which are arranged on the axles of the drive wheel 2 and the counter roller 3 and are fixedly connected to them. The gear wheels serve for the uniform drive of the counter roller 3. Corresponding gear wheels can be provided for the measuring wheel 4 and the counter wheel 6, although these are not expressly shown in FIG. 3.

In Fig. 2 ist schematisch das Steuer- und Regelsystem für die Vorschubgeschwindigkeit des Drahtes 13 dargestellt. Zu diesem Zweck ist der Motor 1 mit einem aufgesetzten Tachometer 23 versehen, das eine Information über die Drehzahl des Motors über die Leitung 24 an einen Mikroprozessor 25 und eine Leitung 26 an eine Steuerschaltung 27 gibt.The control and regulating system for the feed speed of the wire 13 is shown schematically in FIG. 2. For this purpose, the motor 1 is provided with a tachometer 23 which gives information about the speed of the motor via the line 24 to a microprocessor 25 and a line 26 to a control circuit 27.

Mit dem Meßrad 5 ist ein inkrementaler Drehgeber verbunden, der bei einer Bewegung des Drahtes 13 in Längsrichtung entsprechende Digitalsignale an den Mikroprozessor 25 gibt. Schließlich ist eine mit dem Mikroprozessor 25 verbundene Drucksteuerung 29 vorgesehen, die über eine Leitung 33 mit dem Druckzylinder 10 verbunden ist.An incremental rotary encoder is connected to the measuring wheel 5 and, when the wire 13 is moved in the longitudinal direction, outputs corresponding digital signals to the microprocessor 25. Finally, a pressure control 29 connected to the microprocessor 25 is provided, which is connected to the pressure cylinder 10 via a line 33.

Die Vorrichtung arbeitet wie folgt:The device works as follows:

Ein zu versprühender Draht 13 wird an der Rückseite des Gehäuses 31 über die Öffnung 14 und zwischen den einander gegenüberliegenden Meßrad 5 und Gegenrad 6 sowie dem Antriebsrad 2 und der Gegenrolle 3 eingeführt und bis in den vorderen Gaskopf 10 vorgeschoben. Aufgrund der Tatsache, daß der Waagebalken 4 in senkrechter Richtung verstellbar ist, können bei feststehender Achse des Antriebsrades 2 und des Meßrades 5 auch Drähte mit verschiedenem Durchmesser verarbeitet werden, ohne daß das Antriebsrad und das Meßrad in Abhängigkeit von der Dicke des Drahtes ausgewechselt werden müssen. Da sich jedoch bei einer solchen Anordnung die Lage der Mittellängsachse des Drahtes in Abhängigkeit von der Dicke des Drahtes ändert, wird die Drahtführungsöffnung 15 durch eine entsprechende Verstellung sowie der Gaskopf 16 durch eine Verstellung der Spindel 20 jeweils an diese Längsmittelachse des Drahtes angepaßt. Nach dem Einführen des Drahtes wird auf den Druckzylinder 10 ein entsprechender Druck gegeben, wodurch der Waagebalken 4 angehoben und die Gegenrolle und das Gegenrad 3 bzw. 6 gegen die Unterseite des Drahtes gedrückt werden und diese gegen das Antriebsrad bzw. das Meßrad andrücken. Der Druck, mit dem die Gegenrolle 3 bzw. das Gegenrad 6 gegen den Draht drücken, kann hierbei dadurch unterschiedlich gewählt werden, daß der Druckzylinder 10 entlang dem Pfeil 12 verschoben wird, wodurch den Angriffspunkt des Stößels 11 des Druckzylinders entlang dem Waagebalken verschoben wird.A wire 13 to be sprayed is inserted at the rear of the housing 31 via the opening 14 and between the opposing measuring wheel 5 and counter wheel 6 as well as the drive wheel 2 and the counter roller 3 and advanced into the front gas head 10. Due to the fact that the balance beam 4 is adjustable in the vertical direction, wires with different diameters can also be processed with a fixed axis of the drive wheel 2 and the measuring wheel 5 without the drive wheel and the measuring wheel having to be replaced depending on the thickness of the wire . However, since in such an arrangement the position of the central longitudinal axis of the wire changes as a function of the thickness of the wire, the wire guide opening 15 is adapted to this longitudinal central axis of the wire by an appropriate adjustment and the gas head 16 by adjusting the spindle 20. After inserting the wire, a corresponding pressure is applied to the pressure cylinder 10, whereby the balance beam 4 is raised and the counter roller and the counter wheel 3 or 6 are pressed against the underside of the wire and press them against the drive wheel or the measuring wheel. The pressure with which the counter roller 3 or the counter wheel 6 press against the wire can be selected differently in that the pressure cylinder 10 is displaced along the arrow 12, whereby the point of application of the plunger 11 of the pressure cylinder is displaced along the balance beam.

Die bisher übliche Steuerung der Vorschubgeschwindigkeit des Drahtes 13 erfolgte etwa dadurch, daß, jeder Drehzahl des Motors aufgrund des mit der Antriebsachse des Motors verbundenen Antriebsrades 2 und dessen bekannten Umfang eine vorbestimmte Vorschubgeschwindigkeit zugeordnet werden konnte. Durch diese Regelung der Drehzahl des Motors 1 wurde die Vorschubgeschwindigkeit des Drahtes bestimmt. Wie sich jedoch herausgestellt hat, tritt häufig ein Schlupf zwischen dem Artriebsrad 2 und dem Draht auf, der bei der vorgenannten Regelung der Vorschubgeschwindigkeit des Drahtes von der Vorrichtung selbst nicht festgestellt wird. In diesen Fällen wird also dem Gaskopf ein Draht mit schwankenden Vorschubgeschwindigkeiten zugeführt. Die Folge ist eine fehlerhafte Beschichtung der zu beschichtenden Flächen.The previously usual control of the feed speed of the wire 13 was carried out, for example, in that a predetermined feed speed could be assigned to each speed of the motor due to the drive wheel 2 connected to the drive axis of the motor and its known extent. The feed speed of the wire was determined by this regulation of the speed of the motor 1. However, it has been found that a slip often occurs between the drive wheel 2 and the wire, which occurs in the aforementioned Regulation of the feed speed of the wire is not determined by the device itself. In these cases, a wire with fluctuating feed rates is fed to the gas head. The result is an incorrect coating of the surfaces to be coated.

Diese Fehlerquelle wird nunmehr dadurch ausgeschaltet, daß mit Hilfe des Meßrades 5 und dem mit dem Meßrad verbundenen inkremantalen Drehgeber 28 unmittelbar die tatsächliche Vorschubgeschwindigkeit des Drahtes 13 abgetastet wird. Die von dem inkrementalen Drehgeber 28 erhaltenen Signale werden als Istwertsignal für die Vorschubgeschwindigkeit des Drahtes auf den Mikroprozessor 25 gegeben. Die Regelung erfolgt so- dann dadurch, daß an dem Mikroprozessor eine vorbestimmte Vorschubgeschwindigkeit des Drahtes als Sollwert eingegeben wird. Aufgrund des jeweils festgestellten Differenzwertes zwischen dem eingestellten Sollwert und dem durch dass Meßrad 5 abgetasteten Istwert der Vorschubgeschwindigkeit des Drahtes wird sodann von dem Mikroprozessor 25 über die Steuerschaltung 27 die Drehzahl des Motors 1 gesteuert. Ergibt sich, daß trotz eines bestehenden Fehlersignals, d.h. einer Differenz zwischen dem eingestellten Sollwert und dem Istwert der Vorschubgeschwindigkeit, die eine Erhöhung der Motordrehzahl des Motors 1 bewirkt, keine Erhöhung und eine entsprechende Anpassung der Vorschubgeschwindigkeit des Drahtes erfolgt, so bedeutet dies, daß Störungen vorliegen, die durch eine Regelung der Drehzahl des Motors 1 nicht mehr ausgeglichen werden können. Erfahrungsgemäß bestehen die meisten Störungen dieser Art in einem Schlupf des Antriebsrades 2. Aus diesem Grund wird deshalb gemäß der Erfindung bei der Feststellung eines solchen Fehlerzustandes von dem Mikroprozessor 25 ein Steuersignal auf die Drucksteuerungsvorrichtung 29 gegeben, durch die ihrerseits über die Leitung 33 eine Erhöhung des Drucks in dem Druckzylinder 10 bewirkt wird. Dadurch wird über den Waagebalken 4 ein verstärkter Druck auf die Gegenrolle 3 wie auch das Gegenrad 6 ausgeübt. Sofern die Störung in einem Schlupf des Antriebsrades 2 bestanden hat und diese durch die Regelung des Anpreßdrucks der Gegenrolle 3 behoben ist, kann die weitere Regelung der Vorschubgeschwindigkeit sodann wieder mit Hilfe der üblichen Regelung der Drehzahl des Antriebsmotors 1 erfolgen.This source of error is now eliminated by using the measuring wheel 5 and the incremental rotary encoder 28 connected to the measuring wheel to directly sense the actual feed speed of the wire 13. The signals obtained from the incremental rotary encoder 28 are given to the microprocessor 25 as an actual value signal for the feed speed of the wire. The regulation then takes place in that a predetermined feed rate of the wire is entered as a setpoint on the microprocessor. The speed of the motor 1 is then controlled by the microprocessor 25 via the control circuit 27 on the basis of the respectively determined difference value between the set value and the actual value of the feed speed of the wire sensed by the measuring wheel 5. It turns out that despite an existing error signal, i.e. a difference between the setpoint and the actual value of the feed speed, which causes an increase in the motor speed of the motor 1, there is no increase and a corresponding adjustment of the feed speed of the wire, this means that faults are present, which can no longer be compensated by regulating the speed of the engine 1. Experience has shown that most faults of this type consist in a slip of the drive wheel 2. For this reason, according to the invention, when a fault condition of this type is determined, the microprocessor 25 outputs a control signal to the pressure control device 29, which in turn increases the line 33 via the line 33 Pressure in the pressure cylinder 10 is effected. As a result, an increased pressure is exerted on the counter roller 3 via the balance beam 4 as well Counter wheel 6 exercised. If the malfunction has resulted in a slippage of the drive wheel 2 and this is remedied by regulating the contact pressure of the counter roller 3, the further regulation of the feed speed can then take place again with the aid of the usual regulation of the speed of the drive motor 1.

Ein Wirkschema für eine mögliche Ausführungsform einer Regelung der beschriebenen Art ist in Fig. 4 gezeigt. In dem Schema bedeutet aN = Differenz zwischen eingestelltem Sollwert und gemessenem Istwert der Vorschubgeschwindigkeit des Drahtes. Bei 40 wird der Sollwert der Vorschubgeschwindigkeit des Drahtes eingestellt und mit entsprechenden Istwert fortlaufend verglichen. Wird bei dem Vergleich gemäß 41 festgestellt, daß aN = O ist, so erfolgt keine weitere Regelungsmaßnahme. Ist dies nicht der Fall, so wird zunachst gemäß 41 abgefragt, ob aN < 0 ist. Ist dies der Fall, sc wird eine entsprechende Regelungsmaßnahme eingeleitet, durch die gemäß 43 die Motordrehzahl reduziert wird. Ist jedoch weder aN = 0 noch aN < 0, so muß aN > 0 gelten und in dieser Fall wird durch eine Regelung gemäß 44 die Motordrehzahl erhöht. Wird bei der Überwachung gemäß 45 festgestellt, daß die Differenz der aufeinanderfolgenden Fehlersignal aN und aN-1 abnimmt, so bedeutet dies, daß die eingeleitete Regelungsmaßnahme wirkt und es wird lediglich über 46 verfolgt, ob aN = 0 wird. Falls dies nicht der Fall ist, wird nochmals eine Erhöhung der Motordrehzahl vorgenommen. Ergibt die Differenzbildung zwischen aufeinanderfolgend gemessenen Vorschubgeschwindigkeiten gemäß 45 jedoch, daß der Fehlerwert aN nicht verkleinert wird, so erfolgt ein entsprechendes Regelungssignal über 47, das zu der beschriebenen Erhöhung des Anpreßdruckes der Gegenrolle 6 führt. Wird bei der nächstfolgenden überwachung der aufeinanderfolgend gemessenen Differenzwerte aN und aN-1 bei 48 festgestellt, daß der Fehlerwert abnimmt, so bedeutet dies, daß offensichtlich ein Schlupf vorgelegen hat und es wird lediglich über 49 nachgeprüft, ob der Fehlerwert aN zu 0 wird oder ob gegebenenfalls nochmals der Anpreßdruck der Gegenrolle 3 über 47 erhöht werden muß.An operating diagram for a possible embodiment of a control of the type described is shown in FIG. 4. In the diagram, a N = difference between the setpoint and the measured actual value of the feed speed of the wire. At 40, the setpoint of the wire feed speed is set and continuously compared with the corresponding actual value. If it is found in the comparison according to 41 that a N = O, no further control measure is taken. If this is not the case, it is first queried according to 41 whether a N <0. If this is the case, a corresponding control measure is initiated, by means of which the engine speed is reduced according to 43. However, if neither a N = 0 nor a N <0, then a N > 0 must apply and in this case the engine speed is increased by a control according to 44. If it is determined during the monitoring according to FIG. 45 that the difference between the successive error signals a N and a N-1 decreases, this means that the initiated control measure is effective and it is only monitored via 46 whether a N = 0. If this is not the case, the engine speed is increased again. If, however, the difference between successively measured feed speeds according to 45 shows that the error value a N is not reduced, a corresponding control signal is sent via 47, which leads to the described increase in the contact pressure of the counter roller 6. If, during the next subsequent monitoring of the successively measured difference values a N and a N-1 at 48, it is found that the error value is decreasing, this means that there has obviously been a slip and only 49 are checked, whether the error value a N becomes 0 or whether, if necessary, the contact pressure of the counter roller 3 must be increased above 47.

Läßt sich auch bei weiterer Erhöhung des Anpreßdruckes der Gegenrolle 3 nicht eine Verringerung des Fehlersignals aN erreichen, so wird beim nächsten Regelungsschritt gemäß 50 nochmals festgestellt, ob das Fehlersignal bereits 0 ist. Ist dies der Fall, so besteht kein weiterer Regelungsbedarf. Ist dies nicht der Fall, so wird nochmals bei 51 überprüft, ob gegebenenfalls aN < 0 vorliegt. Ist dies der Fall, so wird über 43 die Motordrehzahl reduziert. Ist dies nicht der Fall, so wird über die Regelung gemäß 52 nochmals ein Regelungssignal zur Erhöhung der Motordrehzahl gegeben. Wird bei der nachfolgenden Abtastung gemäß 53 festgestellt, daß das Fehlersignal aN abnimmt, wird über 54 festgestellt, ab das Fehlersignal bereits 0 ist. Läßt sich gemäß der Abtastung 53 keine Verringerung des Fehlersignals aN feststellen, so führt dies zu der Feststellung, daß der Fehler auch nicht durch eine Beseitigung des Schlupfes erreicht werden kann. D.h. es müssen andere, nicht ohne weiteres feststellbare Fehler vorliegen, die sodann zu seiner automatischen Abschaltung des Vorschubs des Drahtes insgesamt gemäß 55 führen.If the error signal a N cannot be reduced even with a further increase in the contact pressure of the counter roller 3, the next control step according to FIG. 50 will again determine whether the error signal is already 0. If this is the case, there is no need for further regulation. If this is not the case, it is checked again at 51 whether a N <0 is possibly present. If this is the case, the engine speed is reduced via 43. If this is not the case, the control according to 52 again gives a control signal to increase the engine speed. If it is determined in the subsequent scanning according to 53 that the error signal a N decreases, it is determined via 54 that the error signal is already 0. If no reduction in the error signal a N can be determined according to the scanning 53, this leads to the finding that the error cannot be achieved by eliminating the slip either. This means that there must be other faults which are not readily ascertainable and which then lead to its automatic switching off of the feed of the wire as a whole according to 55.

55 enthält zusätzlich, um die nicht ohne weiteres feststellbaren Fehler einzugrenzen, eine überwachung der Stromaufnahme des Antriebsmotors 1 (Fig. 1), die einen Rückschluß auf das mechanische Umfeld (Drahtführungen, Drahthaspel etc.) zuläßt. Diese Überwachung ist ständig aktiv und kann zu weiteren definierten Fehlermeldungen herangezogen werden.55 additionally contains, in order to limit the faults which are not readily ascertainable, monitoring the current consumption of the drive motor 1 (FIG. 1), which permits a conclusion to be drawn about the mechanical environment (wire guides, wire reel, etc.). This monitoring is constantly active and can be used for further defined error messages.

Die in 43, 44 und 47 möglichen Regelungen unterliegen in Abhängigkeit des Drahtdurchmessers sowie der Drahtvorschubgeschwindigkeit engen Grenzwerten. Ein überschreiten dieser Grenzwerte führt zum Abschalten des Drahtvorschubes mit definierten Fehlermeldungen.The regulations in 43, 44 and 47 are subject to narrow limits depending on the wire diameter and the wire feed speed. If these limits are exceeded, the wire feed is switched off with defined error messages.

Claims (18)

  1. Wire gun, with a feed device for the wire (17), having a driving wheel (2) for the wire, driven by a motor (1), and a counterroller (3) pressing the wire against the driving wheel, as well as with a device for regulating the feed speed of the wire, characterised in that a measuring wheel (5) sensing the wire and intended for measuring the actual value of the feed speed is provided, and in that the device for regulating the feed speed of the wire comprises a device for changing the pressing force of the counterroller in dependence on a desired-value deviation not adjustable by the action of the regulating device on the motor drive.
  2. Wire gun according to Claim 1, characterised in that a counterwheel (6) pressing the wire against the measuring wheel (5) is provided.
  3. Wire gun according to Claim 2, characterised in that the counterroller (3) for the driving wheel (2) and the counterwheel (6) for the measuring wheel (5) are mounted in a balance beam (4), and in that a press-on device (10) pressing the counterroller (3) and the counterwheel (6) against the wire via the balance beam (4) is provided.
  4. Wire gun according to Claim 3, characterised in that the balance beam (4) is connected to the housing (31) of the wire gun via a link (9).
  5. Wire gun according to Claim 3 or 4, characterised in that the point of application of the press-on device (10) is adjustable along the balance beam (4).
  6. Wire gun according to one of Claims 3 to 5, characterised in that the press-on device (10) is designed as a pressure cylinder.
  7. Wire gun according to one of Claims 1 to 6, characterised in that the measuring wheel (5) is connected to an incremental rotary transmitter (28).
  8. Wire gun according to Claim 6 or 7, characterised in that a control device for the change of pressure in the pressure cylinder (10) is provided.
  9. Wire gun according to one of Claims 1 to 8, characterised in that a control circuit for supplying the motor (1) with an operating voltage is provided.
  10. Wire gun according to one of Claims 1 to 9, characterised in that the motor (1) is connected to a tachometer (23) for measuring the motor speed.
  11. Wire gun according to one of Claims 1 to 10, characterised in that a microprocessor system for determining control signals is provided.
  12. Wire gun according to Claim 11, characterised in that the microprocessor system is connected on the input side to the incremental rotary transmitter (28) and to the tachometer (23).
  13. Wire gun according to Claim 11 or 12, characterised in that the microprocessor system is connected on the input and output sides to the control device for the change of pressure in the pressure cylinder and to the control circuit for supplying the motor with an operating voltage.
  14. Wire gun according to one of Claims 1 to 13, characterised in that the motor (1) is a direct-current motor.
  15. Wire gun according to Claim 14, characterised in that successive operating-voltage pulses of variable pulse width and/or variable pulse frequency can be applied to the direct-current motor (1) in order to control the feed speed.
  16. Wire gun according to one of Claims 1 to 15, characterised in that a gear for transmitting the drive from the driving wheel (2) to the counterroller (3) is provided.
  17. Wire gun according to Claim 16, characterised in that the gear is formed by a gearwheel (21; 22) respectively connected concentrically to the driving wheel (2) and to the counterroller (3).
  18. Wire gun according to Claim 17, characterised in that the toothing of the gearwheels has the reference profile I to DIN 3972 for the number of teeth 9.
EP19890908995 1988-07-27 1989-07-27 A wire gun with a controlled feed device Expired - Lifetime EP0383879B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825510 1988-07-27
DE19883825510 DE3825510A1 (en) 1988-07-27 1988-07-27 WIRE GUN WITH REGULATED FEEDER

Publications (2)

Publication Number Publication Date
EP0383879A1 EP0383879A1 (en) 1990-08-29
EP0383879B1 true EP0383879B1 (en) 1993-04-14

Family

ID=6359676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890908995 Expired - Lifetime EP0383879B1 (en) 1988-07-27 1989-07-27 A wire gun with a controlled feed device

Country Status (5)

Country Link
EP (1) EP0383879B1 (en)
JP (1) JP2811594B2 (en)
BR (1) BR8907036A (en)
DE (1) DE3825510A1 (en)
WO (1) WO1990000937A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3939823A1 (en) * 1989-12-01 1991-06-06 Hoerauf Michael Maschf DEVICE FOR REMOVING YARNS
EP2883824B1 (en) * 2013-12-10 2017-03-22 Komax Holding AG Cable transportation device and method for transporting a cable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414181A (en) * 1944-05-25 1947-01-14 Henry W Dieringer Multiple wire feed mechanism
DE1293659B (en) * 1962-07-03 1969-04-24 Metoo-Inc, Westbury, N.Y. (V.St.A.) Flanun spray gun with blower gas line
US3404823A (en) * 1965-01-11 1968-10-08 Metco Inc Flame spray gun with improved drive mechanism
FR2058852A5 (en) * 1969-09-30 1971-05-28 Pont A Mousson
US3906184A (en) * 1973-05-25 1975-09-16 Kaiser Aluminium Chem Corp Welding process
US4325512A (en) * 1980-02-04 1982-04-20 Norton Company Flame spray gun
US4720044A (en) * 1985-12-13 1988-01-19 Eagle Arc Metalizing Company Electric arc spray metalizing apparatus

Also Published As

Publication number Publication date
DE3825510A1 (en) 1990-02-01
EP0383879A1 (en) 1990-08-29
BR8907036A (en) 1991-01-02
WO1990000937A1 (en) 1990-02-08
JP2811594B2 (en) 1998-10-15
JPH03503737A (en) 1991-08-22

Similar Documents

Publication Publication Date Title
EP1929253B1 (en) Method for controlling a dosing apparatus for liquid or pasty media
DE2954509C2 (en)
EP0576498B2 (en) Method and device for applying a paste
DE3336041C2 (en)
DE4106127C2 (en) Method and device for perforating cigarette wrapping material
EP1403025A1 (en) Apparatus for the continuous production of drip irrigation pipes
DE1632193B2 (en) DEVICE FOR CONNECTING AT LEAST TWO AXIALLY ALIGNED ROD-SHAPED PARTS SUCH AS CIGARETTES AND FILTERS
EP1562724A1 (en) Method and device for adjusting a rotary roller printing machine crop mark
EP0226925B1 (en) Portioning device
DE2443383C3 (en) Control device for the grinding carriage infeed speed on cylindrical grinding machines
DE3702293C2 (en)
EP0383879B1 (en) A wire gun with a controlled feed device
DE3217779C2 (en)
DE3148037C2 (en) Device for intermittent application of adhesive
DE4013432C2 (en) Spark erosive wire cutting machine with a feed device for threading the wire electrode
EP1629734A1 (en) Drum with rib for a rolling device
EP0386195B1 (en) Wire gun
DE3825532A1 (en) WIRE GUN WITH IMPULSE MODULATED MOTOR CONTROL
DE3145637A1 (en) &#34;DEVICE FOR REGULATING A CENTRIFUGAL SPELLER&#34;
EP3318138A1 (en) Device and method for conveying a band of material for the tobacco processing industry
EP0240605A2 (en) Transport device for measured lengths of cable
DE3334856A1 (en) Drive for a heating tool of a packaging machine
EP0803311A2 (en) Method and device for welding can bodies
EP1016535A2 (en) Thermal transfer printer
CH482537A (en) Method and device for automatic, largely inertia-free control of the take-off speed in the manufacture of extruded plastic profiles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH FR GB IT LI

17P Request for examination filed

Effective date: 19900808

17Q First examination report despatched

Effective date: 19920602

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR GB IT LI

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C. S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930426

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990630

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990702

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19990705

Year of fee payment: 11

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: THE PERKIN-ELMER CORPORATION TRANSFER- SULZER METC

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010330

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050727