Bobst Sa

Patrick L&uuml;scher

Michel Piguet

Jean-Bernard Morisod

Gilbert Bardet

Daniel H&uuml;rlimann

Georges Gombau

Detachable inking device for a flexographic printing machine, its embodiment, cleaning and use in such a machine. This device comprises a chambered doctor blade ( ) mounted on two lever-supports ( ) crossed by duct joining pieces ( ) respectively. The lever-supports are rigidly attached to a shaft ( ) about which they are pivotable and which is held between the frames ( ) of said flexographic printing machine. Said chambered doctor blade ( ) consists of a body ( ) made of light metal material, crossed at one of its ends by a tube ( ) emgerging from the bottom ( ) of said body ( ), and at the other end by a tube ( ) having its opening part ( ) at level with the bottom ( ) of the body ( ). The latter rests on seals ( ) secured to the lever-supports ( ) to which are attached centering and fixing means ( ) allowing a quick loosening of the chambered doctor blade ( ) without the help of any tool. The body ( ) comprises two plane and outwardly slanted projecting parts against which are glued two doctor blades ( ) by means of a gluing means ( ). The doctor blades ( ) are also held at their ends by a supporting piece ( ) having two supporting parts ( ) applying the ends of the doctor blades ( ) on an end seal ( ). Said chambered doctor blade ( ) can be handled by a manipulator ( ) and conveyed into an automatic washing device ( ) or a device ( ) for gluing and ungluing said doctor blades ( ).

Detachable inking device for a flexographic printing machine, its embodiment, cleaning and use in such a machine

Detachable inking device for a flexographic printing machine, its embodiment, cleaning and use in such a machine. This device comprises a chambered doctor blade ( ) mounted on two lever-supports ( ) crossed by duct joining pieces ( ) respectively. The lever-supports are rigidly attached to a shaft ( ) about which they are pivotable and which is held between the frames ( ) of said flexographic printing: machine. Said chambered doctor blade ( ) consists of a body ( ) made of light metal material, crossed at one of its ends by a tube ( ) emgerging from the bottom ( ) of said body ( ), and at the other end by a tube ( ) having its opening part ( ) at level with the bottom ( ) of the body ( ). The latter rests on seals ( ) secured to the lever-supports ( ) to which are attached centering and fixing means ( ) allowing a quick loosening of the chambered doctor blade ( ) without the help of any tool. The body ( ) comprises two plane and outwardly slanted projecting parts against which are glued two doctor blades ( ) by means of a gluing means ( ). The doctor blades ( ) are also held at their ends by a supporting piece ( ) having two supporting parts ( ) applying the ends of the doctor blades ( ) on. an end seal ( ). Said chambered doctor blade ( ) can be handled by a manipulator ( ) and conveyed into an automatic wahsing device ( ) or a device ( ) for gluing and ungluing said doctor blades ( ).

A detachable inking device for a flexographic printing machine, a manipulating device for removing and replacing the inking device, a cleaning device, and a repair station for refurbishing the inking device. The inking device itself is a chambered doctor blade ( ) mounted on two lever-supports ( ) through which ink is supplied from a reservoir. The lever-supports are rigidly attached to a shaft ( ) which is pivotable between the frames ( ) of the flexographic printing machine. The chambered doctor blade has a body ( ) made of light material, crossed at one of its ends by a tube ( ) emerging from the bottom ( ) of body ( ), and at the other end by a tube ( ) having its opening part ( ) at level with the bottom ( ) of the body ( ). The latter rests on seals ( ) secured to the lever-supports ( ) to which are attached centering and fixing means ( ) allowing a quick loosening of the chambered doctor blade ( ) without the help of any tool. The body ( ) comprises two planar outwardly slanted projecting parts against which are adhesively attached two doctor blades elements. The doctor blade elements are also held at their ends by a supporting piece ( ) having two supporting flanges ( ) that engage the ends of the doctor blade elements ( ).

Device ( ) for the longitudinal alignment of plate elements ( ) within an infeed station of a machine working them. The aforementioned device is secured by two lateral brackets ( ) between which is settled a conveyor track for the said plate elements, comprising two plates ( ) folded downwise according to a line ( ) non-perpendicular in the meaning of the shifting ( ) of the said plate elements ( ). The latter are moved downstream by means of at least two conveyor belts running around at least two pulleys ( ) secured between unmovable bearings ( ) at the input of the said device. The device ( ) has on its leading edge a protection plate ( ) over which are flaps ( ) movable and interdependent of a transverse shaft ( ) connecting the leading edges of the two lateral brackets ( ). This shaft is moved by an alternate rotation between 0 and 45 degrees, synchronized with the production speed of the machine in order to allow the successive alignment of the said plate elements ( ). It has as a characteristic to be linked and made of several segments ( ) each one of them bearing one of the said flaps ( ).

Growing community of inventors

Cossonay-Ville, Switzerland

Patrick Lüscher

Growing community of inventors

Cossonay-Ville, Switzerland

Patrick L&uuml;scher

Patrick Lüscher