Bookbinding: process and apparatus – Apparatus – Finishing apparatus
Reexamination Certificate
2000-06-27
2001-02-13
Fridie, Jr., Willmon (Department: 3722)
Bookbinding: process and apparatus
Apparatus
Finishing apparatus
C412S009000, C412S019000
Reexamination Certificate
active
06186721
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an arrangement for pressing a book cover onto the adhesive-coated outer surfaces of an inner book to be inset into book covers by means of an insetting machine, comprised of two pressing rollers of a pressing device arranged opposite one another with respect to the pressing area, for pressing respectively a side of a book cover onto an adhesive-coated outer surface of an inner book moved vertically upwardly by a saddle plate of a circulating conveyor, wherein the pressing device is connected and controlled by a drive connection to the conveyor.
2. Description of the Related Art
The adjustment of a pressing device relative to the transported inner book in an insetting machine requires a time-consuming labor expenditure and is possible only for stopped machines, as, for example, disclosed in European patent application EP-A-0 198 201 and German patent application DE-A-37 13 896. In this context, the drive of the pressing device must be disconnected from the main drive in order to adjusted the pressing rollers to the width of an inner book transported by the saddle plate.
Insetting machines can have, as is known in the art, more than one pair of pressing rollers wherein the leading pressing roller pair in the conveying direction of the inner book, i.e., the first roller pair acting on an inner book is adjusted to the inner book and the following pressing pair only performs an additional pressing function.
SUMMARY OF THE INVENTION
It is an object of the present invention to eliminate for a precise pressing process the manual adjustment, which entails several additional disadvantages, and to provide for a device of the aforementioned kind apparatus-related measures with which the aforementioned circumstances are eliminated as much as possible during the alignment of the pressing device.
In accordance with the present invention, this is achieved in that the drive connection between the conveyor and the pressing device is provided with an adjustable pulling element gear unit for a continuous adjustment of the relative position between the saddle plates and the position of the pressing device.
In an advantageous embodiment of the invention the pulling element gear unit is comprised of a circulating pulling element, for example, a chain or a toothed belt, that is connected with the conveyor, on the one hand, and the pressing device, on the other hand, in a driving connection. This is a simple assembly measure that can also be realized for already existing machine concepts.
In a preferred embodiment, the circulating pulling element guided about the drive shafts of the conveyor and of the pressing device has two portions and each portion is guided about a stationarily supported roller pair of two laterally spaced apart deflection rollers and a control roller positioned between the deflection rollers and freely rotatably supported on a slide that is moveable on a guide arrangement, wherein each portion forms an open loop extending between the deflection rollers and guided about the control roller.
As an alternative, the pulling element guided about the drive shafts of the conveyor and of the pressing can form two portions which are guided respectively about two spaced apart control rollers of a roller pair, mounted freely rotatably on a slide which is adjustable on a guide arrangement, and a stationarily supported deflection roller thus forming an open loop extending between the control rollers and guided about the deflection roller.
Both configurations of guiding the pulling element do not differ with regard to their effect, but the latter arrangement requires a slide with larger dimensions.
Moreover, it would be possible to supplement the roller pairs as in the situation of a pulley block by additional rollers so that the adjusting process of the slide could be realized with a further reducing action.
Advantageously, the slide is adjustable in the guide arrangement perpendicularly to a plane which extends through the rotational axes of a roller pair so that symmetrical conditions are present.
Expediently, for simplifying the attachment, the guide arrangement for receiving the slide is connected with the frame of the insetting machine.
The slide can be manually driven or driven by a controllable motor wherein the drive is realized mechanically or by a linear drive.
It is favorable when the slide is provided at the side facing away from the deflection rollers or the rollers, with threaded bushings into which a spindle is screwed so that a compact and easily accessible construction is realized.
For a preadjustment of the slide and for tensioning the pulling element, it is advantageous when the control rollers or the roller pairs are supported each on at least one tensioning plate that can be displaced on the slide in the movement direction of the slide.
REFERENCES:
patent: 3469270 (1969-09-01), Thorp
patent: 3771185 (1973-11-01), Thorp et al.
patent: 4565477 (1986-01-01), Axelrod
patent: 5141377 (1992-08-01), Rathert
patent: 3713896 (1987-10-01), None
patent: 0198201 (1986-10-01), None
Fridie Jr. Willmon
Grapha-Holding AG
Kueffner Friedrich
LandOfFree
Device for pressing a book cover onto the adhesive-coated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for pressing a book cover onto the adhesive-coated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for pressing a book cover onto the adhesive-coated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2588389