Apparatus for pasting a web at right angles to its direction of motion
AssigneeAlbert-Frankenthal AG
InventorsRudolph Fischer, Rudolf Stab
Life of this patent
Estimating the term…
Loading patent…
AssigneeAlbert-Frankenthal AG
InventorsRudolph Fischer, Rudolf Stab
Estimating the term…
In connection with an apparatus for putting paste on a moving printed paper web in strips at a right angle to the direction of motion of the web by moving the web between a pasting cylinder and a web support part on the other side of the web, one purpose of the invention is to make certain that the strips of paste may be put on at a high speed and to have such a design that the upkeep work on the apparatus is simple and may be done quickly. To make this possible, the pasting cylinder is made up of cylinder body and a paster roll placed within it so that a limited area of its outer face is uncovered by an axial slot in the outer face of the body. The paster roll has one or more wells stretching along it that are topped up with paste at a point within the pasting cylinder body, while the parts of the outer face of the roll between the wells are stripped and kept clear of the paste. The paster roll and the pasting cylinder body supporting it are turned about two separate, parallel axes with the axis of the roll moving round the axis of the body. The speeds of turning of the roll and the body are such that the sum thereof is equal to the speed of the web. At the point at which the web is acted upon by the roll its opposite side is supported by the support part that is in the form of a rail placed eccentrically on a turning shaft, the shaft being run at such a speed that the surface speed of the rail is equal to the speed of the web.
In an apparatus for placing strips of adhesive compound on a web moving in the direction of its length, the strips being generally at a right angle to the said length direction of the web, comprising a pasting cylinder running across said length direction generally at a right angle thereto, means for turning said cylinder at a speed related to the speed of said web, and a support part, said support part and said pasting cylinder being on opposite sides of said web, the invention residing in that said pasting cylinder is made up of a paster roll and a pasting cylinder body with said roll thereon, the roll and the cylinder having axes that are parallel to each other, said roll being supported on said body for turning motion in relation thereto and having an outer face with at least one paste well let into it so that said well is open and in the form of a break in the said outer face, said well having an outer limiting edge in keeping with the desired form of said strips, stripper means for keeping said outer face clear of said compound, said outer face being uncovered at least at a position opposite to said web support part, driving and timing means for turning said pasting cylinder body and said paster roll in relation to each other so that the axis of one thereof is moved about the other and so that the roll and the body is each turned about its axis with the timing thereof bearing a relation to the speed of the said web and being such that the sum of the surface speeds of the roll and of the said body as measured in the direction of motion of said web is equal to the speed of the web, said support part comprising a shaft, means for turning said shaft in timed relation to said web and to said paster roll, and a rail fixed to said shaft and sticking out proud therefrom in a radial direction in relation thereto, said rail being parallel to said pasting cylinder.
The apparatus as claimed in claim 7 wherein said gearing is epicylic gearing.
The combination of the said cutter, the said folder and the said apparatus as claimed in claim 17 wherein said cutter has a cutter cylinder with an acting radius equal to the acting radius of the said rail.
Dependencies are inferred from the claim text.