摘要:
A hydrostatically supported roll includes a stationary crosshead, which extends through a rotatable hollow cylinder to form a surrounding clearance space therewith. Annular sealing elements are radially movable in bores provided in the crosshead to sealingly abut the inner circumference of the hollow cylinder. The sealing elements are arranged in diametrically opposing pairs, i.e., they are offset by 180.degree. in the circumferential direction of the roll at the same longitudinal position along the roll. The entire clearance space surrounding the sealing elements is filled with hydraulic fluid at a predetermined pressure, except for the areas in which the sealing elements are present. The interior chamber of one of the sealing elements in each pair can be filled with hydraulic fluid at a higher pressure than the pressure in the clearance space, while the interior chamber of the other one of the sealing elements of each pair can be filled with a hydraulic fluid under a lower pressure than that in the clearance space. In this manner, the individual forces of the sealing elements in a pair produce a net increased, resultant force in the same direction that acts against the hollow cylinder.
摘要:
The invention relates to an image processing apparatus (1) comprising an image providing unit (2) for providing a first image of an object and a second image of the same object and a filtering unit (3) which filters the first image depending on a first degree of similarity between image values of the first image and on a second degree of similarity between image values of the second image. This allows filtering the first image depending on the likeliness that image values belong to the same part of the object, for example, to tissue or to bone material of the object, if the object is a human being or an animal, even if due to noise the image values of one of the first image and the second image are disturbed, thereby improving, for example, an edge preserving property of the filtering procedure.
摘要:
The invention relates to an image processing apparatus (1) comprising an image providing unit (2) for providing a first image of an object and a second image of the same object and a filtering unit (3) which filters the first image depending on a first degree of similarity between image values of the first image and on a second degree of similarity between image values of the second image. This allows filtering the first image depending on the likeliness that image values belong to the same part of the object, for example, to tissue or to bone material of the object, if the object is a human being or an animal, even if due to noise the image values of one of the first image and the second image are disturbed, thereby improving, for example, an edge preserving property of the filtering procedure.
摘要:
A calender (1) for calendering a paper web (2), in particular made from paper suitable for gravure printing, having at least one roll stack which in each case has an upper and a lower end roll (4.1, 4.2) and intermediate rolls (5.1, 5.2, 5.3, 5.4), one of the two end rolls (4.1) delimits a first working nip (3) of the roll stack depending on the guidance of the paper web (2), and the rolls (4.1, 4.2, 5.1, 5.2, 5.3, 5.4) are hard rolls (4.1, 5.2, 5.4) and soft rolls (5.1, 5.3, 4.2) in order to form loadable working nips in the form of soft nips, the end roll (4.1) which delimits the first working nip (3) being a hard, heated roll, the diameter of which is greater than that of a hard, heated intermediate roll (5.2, 5.4) and the outer wall (9) of which forms one of two contact faces (9, 10) of a web treatment nip (8) which is arranged upstream of the first working nip (3), and the other contact face (10) being formed by a belt (14) which circulates on guide rolls (11, 12, 13).
摘要:
The invention concerns a calender which comprises a vertical stack of interlinked rollers driven individually by regulated electric motors. The regulation process acts on the distribution of the delivered power to the individual rollers such that the forces acting on the rollers in the horizontal direction and measured in the roller bearings are minimized, so enabling slimmer rollers to be used.
摘要:
The invention relates to a calender for treatment of a product web, having at least one roll stack comprising rolls arranged in a calender frame, the ends of which rolls are guided in roll mountings, which can be fastened to the calender frame by means of brackets, and having guiding means associated with the rolls for guiding a product web through nips formed between the individual rolls. For a rapid change-over with respect to the nature and intensity of the treatment of a product web in a calender, the brackets are in the form of modules, which support the rolls and are capable of being fastened individually to the calender frame and which have identical connecting devices for grouping, as desired, on the calender frame.
摘要:
The invention concerns a calender which comprises a vertical stack of interlinked rollers driven individually by regulated electric motors. The regulation process acts on the distribution of the delivered power to the individual rollers such that the forces acting on the rollers in the horizontal direction and measured in the roller bearings are minimized, so enabling slimmer rollers to be used.
摘要:
A device (1) for imaging the interior of an optically turbid medium is provided. The device comprises a receptacle (3; 103) structured to accommodate an optically turbid medium for examination and an optically matching medium filling a space between an inner surface (6; 106) of the receptacle (3; 103) and the optically turbid medium. The device comprises at least one light source generating light to be coupled into the receptacle (3; 103) and at least one detector for detecting light emanating from the receptacle (3; 103). A coupling surface (10; 110) optically coupled to the inner surface (6; 106) of the receptacle and a coupling member (11; 111) optically coupled to the light source and the detector are provided. The coupling surface (10; 110) and the coupling member (11; 111) are movable to a plurality of different positions relative to each other and structured to establish an optical connection from the light source to the inner surface (6; 106) of the receptacle and from the inner surface (6; 106) of the receptacle to the at least one detector in the plurality of different positions.
摘要:
Apparatus for forming an extended nip between a mating roll and a shoe roll for treating a product web, the shoe roll having a stationary carrier and a flexible roll shell which can rotate around the carrier and which, in the region of the extended nip, is supported on a hydrodynamically lubricated running surface of a press shoe guided on the carrier, for which purpose a device for applying lubricant to the inner side of the roll shell is provided, where, in an inlet region, the press shoe has a plurality of holes which are arranged transversely with respect to the machine running direction, are connected to a lubricant supply in order to be fed with lubricant and, for this purpose, end at the running surface, and the holes comprise restrictors whose resistance is designed for a pressure drop of 5 to 15 bar.
摘要:
The invention concerns a calender which comprises a vertical stack of interlinked rollers driven individually by regulated electric motors. The regulation process acts on the distribution of the delivered power to the individual rollers such that the forces acting on the rollers in the horizontal direction and measured in the roller bearings are minimized, so enabling slimmer rollers to be used.