摘要:
A system for selective treatment of a traveling web, preferably of paper or cardboard, by surface treatment or impregnation in which at least one coater is in the case of web treatment arranged after a dryer group for treatment of the one side of web. At least one further coater for treatment of the other side of the web is arranged before a further dryer group. Noncontact web deflectors are arranged after the coaters and noncontact dryers can be installed retroactively in existing dryer sections.
摘要:
An application apparatus is for applying a liquid or pasty medium to a moving base. The moving base is a surface of a material web in a case of direct application and a surface of a transfer element for transferring the medium to the material web in a case of indirect application, the material web being one of paper and cardboard. The application apparatus has an inlet side and an outlet side with respect to a direction of movement of the moving base. The application apparatus includes a carrying beam; an essentially rigid supporting unit provided on the carrying beam; a sealing doctor device positioned at the inlet side of the application apparatus, the sealing doctor device being fixedly attached to the supporting unit; and a metering doctor device positioned at the outlet side of the application apparatus, the metering doctor device being fixedly attached to the supporting unit. The sealing doctor device and the metering doctor device define an application chamber therebetween.
摘要:
A device designed for coating a material web with a coating medium includes a coater, a metering/smoothing device positioned downstream of the coater in the direction of feed of the material web, at a certain distance from the coater, and a support roll around which the material web is guided. Moreover, the material web is guided around the support roll only in the area of the metering/smoothing device, and it traverses essentially in a straight line between the coater and the support roll. In accordance to a first aspect of this invention, a support arrangement supports the material web in the straight web section between the coater and the support roll. In accordance to a second aspect of this invention, devices are provided which stabilize the material web in the area where the web traverses in a straight line.
摘要:
The invention relates to a device and a method for the stabilization of the position of cameras, and for the production of film recordings from unmanned airborne objectsAn position stabilization system for a camera suspended in a motor-driven pivot device so as to be able to pivot the same about multiple axes, comprising rotary sensors or angular rate sensors and a closed-loop control, wherein the assignment, the coupling degree, and/or the effective direction of the signals in the control path from the angular rate sensors to the motors can be variably controlled by means of a cross-fade circuit as a function of the relative orientation of the measured rotational axes to the driven rotational axes. The invention further relates to special mechanical embodiments of the pivot device.
摘要:
An aid for remotely controlling unmanned aircraft and particular helicopters, which allow the pilot at least approximately to directly stir the angle of inclination, thus for instance a pitch(elevator) and/or roll angle, so that on neutralizing of the steering stick, the respective angle of attitude returns autonomously, and to a large extent goes back to the horizontal position. To this end, a closed-loop control of the inclination is carried out, in that an angular rate signal is being integrated to an actual value, and a nominal value is admixed behind the forming of the integral, wherein the time of integration is shortened in order to avoid null drifts, in particular by feeding a portion of the actual value and/or the nominal value back into the input of the integrator. Furthermore, a vectorial rotation of the integrated actual values by a yaw signal.
摘要:
A machine for one of producing and treating, and separately treating a material web including a material web dispensing device, at least one application apparatus, a drying device, a processing device and a material web smoothing device. The material web dispensing device dispenses a material web continuously. The at least one application apparatus is arranged along a material web path after the material web dispensing device. The application apparatus applies a liquid or a pasty application medium to at least one side of the web as it moves along the material web path. The at least one application apparatus including at least one contactless application unit discharging the application medium as a free application medium jet, an application medium curtain, an application medium veil or an application medium droplet spray. The at least one contactless application unit applying the application medium to the material web on the basis of forces imparted to the application medium, movement impulses imparted to the application medium or movement of the application medium induced by the force of gravity. The drying device is arranged along the material web path after the application apparatus. The drying device drying the moving material web to a drying state. The processing device is arranged along the material web path after the drying device. The processing device at least processing, picking up and/or discharging the web. The material web smoothing device is positioned along the material web path either before or after the application apparatus.
摘要:
An application unit for applying a liquid or pasty medium onto a surface moving past the application unit. This has particular application to direct or indirect application of such a medium to a paper or board web. A support beam and a front wall supported generally further from and a rear wall supported generally closer to the moving surface. The walls are spaced apart for defining a pasty medium supply gap between them and are oriented so that the supply gap generally directs the medium toward the surface. The front and rear walls can selectively receive releasable attachment of members for forming a liquid medium an application chamber, the chamber having a downstream end with a blade, an upstream end with a damming strip over which the excessive medium in the application chamber can overflow. Alternatively, a second set of attachable members may be attached to the walls for forming a free jet nozzle dosing gap that communicates with the supply gap for directing the medium to the surface. Therefore, the basic structural group remains unchanged and selectively it may be modified to either an application chamber or a free jet nozzle dosing gap. In an alternate embodiment, the elements defining the dosing gap themselves can receive the attachable elements for defining the application chamber. This enables rearranging the application unit either to define an application chamber or a free jet nozzle with replacement of fewer parts, and generally the parts that are toward the surface.
摘要:
A coating/drying device including a first application device, a second application device and a drying device. The first application device for applying application medium to a first side of a fiber material web, moving in a running direction. The second application device for applying application medium to a second side of the fiber material web, the second side being opposite the first side. The second application device being an application device operating without contacting the fiber material web. The drying device is arranged downstream of the first application device and the second application device in the running direction of the fiber material web.
摘要:
The invention relates to a guiding device for a continuous paper sheet comprising at least one guiding element which is disposed downstream with respect to an application group and used in the form of an air circulating channel in order to ensure a contactless guiding in a machine producing and/or processing a continuous material sheet, in particular a paper or paperboard sheet. Said guiding element consists of a guiding surface made at least partially of an air-permeable porous material which is exposed to a compressed air pressure in such a way that air can circulate therethrough, thereby forming an air cushion between said guiding surface and a moving material sheet.
摘要:
A machine for one of producing and treating, and separately treating a material web including a material web dispensing device, at least one application apparatus, a drying device, a processing device and a material web smoothing device. The material web dispensing device dispenses a material web continuously. The at least one application apparatus is arranged along a material web path after the material web dispensing device. The application apparatus applies a liquid or a pasty application medium to at least one side of the web as it moves along the material web path. The at least one application apparatus including at least one contactless application unit discharging the application medium as a free application medium jet, an application medium curtain, an application medium veil or an application medium droplet spray. The at least one contactless application unit applying the application medium to the material web on the basis of forces imparted to the application medium, movement impulses imparted to the application medium or movement of the application medium induced by the force of gravity. The drying device is arranged along the material web path after the application apparatus. The drying device drying the moving material web to a drying state. The processing device is arranged along the material web path after the drying device. The processing device at least processing, picking up and/or discharging the web. The material web smoothing device is positioned along the material web path either before or after the application apparatus.