摘要:
A roller and a device for guiding paper webs to a unit of a rotary printing press includes paper web traction devices. These traction devices may be endless or of finite length. The roller that cooperates with these traction devices includes a passage that receives the traction devices. The axial width of the passage is adjustable.
摘要:
A longitudinal folding device for paper webs includes at least two hopper flanks. A paper deflection device encompasses the hopper flanks in a shell-like manner. The paper deflection device is supported by a machine frame and is electrically insulated from the machine frame. The paper deflection device may be connected to one or more vibrators or beaters.
摘要:
Paper webs are wound up or supplied to units of a rotary printing press, such as a longitudinal fold former. Flexible endless or open ended traction devices are used. Paper webs are secured to the traction devices in a positive manner. The paper webs or their starting ends can be secured together only for purposes of being fed through the longitudinal fold former.
摘要:
At least one paper web is drawn into a web-fed rotary printing press. A draw-in device is provided with permanently fixed pointed bars or spikes. These can be moved or oriented so that they penetrate the paper web only during drawing in of the web into the printing press.
摘要:
A former is used to fold webs longitudinally. During the web drawing-in process, the individually incoming paper webs in a group of paper webs are conveyed smoothly to a folding mechanism at the end of the former. This is accomplished by using a number of upper and lower transport elements which are located above and next to each other at least inside the boundaries of the upper surface of the former. These upper and lower transport elements can be brought together and can be separated. They can be driven as desired.
摘要:
A former is used to fold webs longitudinally. During the web drawing-in process; the individually incoming paper webs in a group of paper webs are conveyed smoothly to a folding mechanism at the end of the former. This is accomplished by using a number of upper and lower transport elements which are located above and next to each other at least inside the boundaries of the upper surface of the former. These upper and lower transport elements can be brought together and can be separated. They can be driven as desired.
摘要:
A guide roller is driven in an intermittent manner. A driven draw-in mechanism is used to draw in a paper or other continuous web of material. The drive mechanism for the web guide roller is accelerated to a paper feed speed prior to the arrival of the start of the paper web at the guide rollers. A coupling is provided between the draw-in mechanism and the guide roller.
摘要:
A paddle wheel is used to deliver folded products to a conveyor belt in a shingled fashion. The paddle wheel has a plurality of pockets which are formed by circumferentially spaced curved paddles. The thickness or width of each product receiving product is adjustable by providing a guide strip in each pocket. The end of the guide strip adjacent the bottom of each pocket can be shifted radially with respect to the axis of rotation of each paddle wheel by actuation of a drive assembly.
摘要:
A web of material is drawn into a printing press. A part of the tip of the web, which is laterally projecting over the edge of the web, is separated lengthwise at least once by the use of a slitting device. A device for accomplishing the drawing in of the web is also disclosed.
摘要:
A printed, endless web is transversely cut by the cooperation of a cutting blade cylinder and a sheet gripping cylinder that also carries cutting blocks. If the web that is to be cut, is noted as having a defect, for example in the printing applied to it, the cutting blades can be withdrawn into the cutting blade cylinder and the deflective web can be diverted away from the folding apparatus.