摘要:
In a method for producing an air restrictor, use is made of at least one liquid or tacky substance to join perforated plates to one another and to seal the air restrictor. The substance can be, for example, an adhesive contained in capsules. The adhesive is liberated by bursting the capsules inserted between the perforated plates.
摘要:
A printing unit of a printing material processing machine, preferably a sheetfed offset printing press, includes a form cylinder and an impression cylinder. The form cylinder has a printing form for applying printed information to the printing material and the impression cylinder has a microstructured surface, preferably a cover, contacting the printing material. A surface of the impression cylinder contacting the printing material is provided with micro-embossed structures for applying embossed information to the printing material. The printing material is printed and embossed simultaneously. A security feature and/or a change in gloss can be implemented on the printed product through the use of the embossed, preferably micro-embossed, information.
摘要:
A drive for a rotary printing press makes a reliable transmission of high torques possible and, with low structural expenditure, setting of the phase in the main drive gear train. In the drive for a rotary printing press, two adjacent transfer drums are mounted with shaft journals in side walls, a gearwheel of the gearwheel mechanism is disposed fixedly in terms of rotation on the shaft journals and the gearwheels are not in direct engagement with one another. The gearwheels of the adjacent transfer drums are permanently in engagement in each case with one intermediate gear. The gearwheels of the adjacent transfer drums and the intermediate gears are kept at a spacing from one another in each case with one lever. The intermediate gears are kept at a spacing in each case from one another with a coupler. The coupler can be disconnected and the engagement of the teeth of the intermediate gears can be canceled.
摘要:
A printing-material sheet processing machine includes at least one processing unit with an impression cylinder and a tool-carrying cylinder bringable into contact with the impression cylinder, the tool-carrying cylinder having at least one tool selected from the group of tools consisting of respective deforming and separating tools for the printing-material sheets, the processing unit also having a circumferential-register adjusting device and a lateral-register adjusting device, which are assigned to the tool-carrying cylinder for adjusting the register thereof, and having a diagonal-register adjusting device assigned to a sheet transport cylinder for adjusting the register thereof, the sheet transport cylinder being disposed for transferring the printing-material sheets to the impression cylinder.
摘要:
A method of aligning a rubber blanket formed with register cut-outs, relative to a clamping device having register pins, for clamping the rubber blanket onto a cylinder, includes bringing the register cut-outs formed in the rubber cylinder into contact with the register pins of the clamping device when the clamping device has been applied to the cylinder.
摘要:
A sheet-fed printing machine made up of units in an in-line construction includes a sheet-feeding unit disposed between a sheet separating unit and a sheet processing unit following the sheet separating unit. The sheet feeding unit is formed so that it is selectively pre-arrangeable upline from various types of sheet processing units for creating various types of sheet-fed printing machines of a building block system.
摘要:
A device for ensuring correct tooth engagement during coupling of an adjustable, first gearwheel to a second gearwheel of a printing-material processing machine, includes a first adjustment device for adjusting the first gearwheel in a direction towards the second gearwheel during coupling, and further includes a protrusion and a guide for guiding the protrusion during the coupling, the protrusion being disposed eccentrically to one of the two gearwheels and being connected to the one gearwheel, so that, during rotation of the one gearwheel about a central axis thereof, the protrusion is rotatable together with the one gearwheel.
摘要:
A surface, especially a galvanically molded transport cylinder sleeve, has a surface structure for contacting printing material, in particular sheets of paper. The surface structure includes first structural elevations spaced apart from each other by a minimum distance A1 and having a height B1 and second structural elevations spaced apart from each other by a minimum distance A2 and having a height B2 with B2
摘要:
A drive for a rotary printing press has a clutch with improved reliability in the main drive gear train. The drive has a gearwheel mechanism for transmitting a rotational movement of transfer drums during delivery of a printing material. The gearwheel mechanism includes a gearwheel pair with a driving gearwheel and a driven gearwheel and the driven gearwheel, which is arranged coaxially with respect to the driving gearwheel, is coupled during delivery to a shaft journal of a transfer drum. A clutch is provided for selectively producing and interrupting the transmission of torque between the driving gearwheel and the driven gearwheel. At least one motor is provided for feeding a torque into the gearwheel mechanism. A stepup gear mechanism is arranged in the torque flow between a clutch half of the clutch and a gearwheel.
摘要:
A method for operating a printing machine having a positioning device with a cylinder that is adjustable into different positions along an adjustment path and cooperating with a cylinder for guiding printing material, which includes performing at least two of the following method steps of adjusting the rotational angle of the cylinder guiding the printing material into a given position; adjusting the rotational angle of the cylinder that is adjustable along the adjustment path into a given position; adjusting the circumferential register of the cylinder that is adjustable along the adjustment path; and adjusting the cylinder that is adjustable along the adjustment path, from a first cylinder position into a second cylinder position along the adjustment path.