MACHINE A EMBALLER HORIZONTALE COMMANDEE PAR CALCULATEUR

L'INVENTION CONCERNE UNE MACHINE A EMBALLER HORIZONTALE COMMANDEE PAR CALCULATEUR.LA MACHINE COMPORTE ESSENTIELLEMENT UN DISPOSITIF 36 QUI FORME UNE BANDE PLATE W EN UN TUBE DANS LEQUEL DES ARTICLES SONT INTRODUITS ESPACES LES UNS DES AUTRES, UN DISPOSITIF 42, 44 QUI FERME ET COUPE TRANSVERSALEMENT LE TUBE ENTRE LES ARTICLES POUR PRODUIRE DES PAQUETS INDIVIDUELS ET UN DISPOSITIF 213, 214 COMPRENANT UN CALCULATEUR QUI RECOIT LES SIGNAUX DE DIFFERENTS CAPTEURS ET QUI REGLE LA VITESSE DE DIFFERENTS MOTEURS ET SERVOMOTEURS.L'INVENTION S'APPLIQUE NOTAMMENT A L'EMBALLAGE D'ARTICLES COLLANTS, DE FORMES IRREGULIERES, ETC. The horizontal wrapping machine of the type wherein a succession of articles are fed into a traveling tube of web material which is sealed longitudinally and severed and sealed between the articles to produce individual hermetically sealed packages. A variable speed motor drives a conveyor which may be provided with article feeding flights and a switch, actuated once each revolution of a timing shaft, provides a pulse corresponding to each flight on the article feeding conveyor. In addition an encoder driven by the variable speed drive motor shaft provides a digital velocity signal used as a reference signal for servo motors that may be coupled, in combination or individually, to drive web feed rolls, longitudinal sealing wheels and one or more sealing and severing heads. A delivery conveyor transporting individual packages may, through a suitable drive train, be driven by the variable speed drive motor. The velocity and position of the servo motors is established and controlled through an industrial computer, at a percentage of the velocity of the variable speed drive motor. Thus, the digital velocity and position signal input to the computer by the encoder driven by the variable speed drive motor establishes a reference velocity and position the servo motors.