Length-variable sliding rail element for a roller chain

Details Length-variable sliding rail element for a roller chain Length-variable sliding rail element for a roller chain

1999-10-29

2001-08-07

Morano, S. Joseph (Department: 3617)

Railways

Trolley rails

C104S093000, C101S228000, C198S836100, C198S836300, C198S838000

Reexamination Certificate

active

06269751

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a length-variable guide rail element for a roller chain. The guide rail element is formed by two partial elements which can be displaced relative to each other and which have complementarily meshing segments.
DESCRIPTION OF THE PRIOR ART
A length-variable guide rail element, embodied C-shaped in profile, for use with a roller chain, in particular for a draw-in device, is known from DE 44 11 493 C1. The guide rail element consists of two partial guide rail elements, which can be pulled apart and which each have two diagonally opposite segments.
DE 42 02 713 C2 discloses a guide rail element having three segments, at one end of which, respectively viewed in cross section, a first segment is located opposite a second and third element on the other side of the roller. This guide rail element as a whole consists of five segments.
GB 2 125 758 A describes a section for a conveying device, which can be drawn apart. Here, two decks are arranged one above the other, wherein the respective lower running surface can be extended by means of a bracket.
GB 892 208 A describes a chain conveyor, wherein the chain links are length-variable and spatially movable.
SUMMARY OF THE INVENTION
The object of the present invention is based on providing a length-variable guide rail element.
In accordance with the present invention, is object is attained by providing a length variable guide rail element which has two partial elements. These two partial elements can be displaced relative to each other and have opposing segments. These segments are complementary in shape and mesh with each other. The two partial elements can be placed adjacent each other in a first position and can be drawn apart to a second position.
The advantages which can be obtained by means of the present invention rest, in particular, that a length-variable guide rail element is provided, which guides portions of a roller chain without problems. Thus, in a first preferred embodiment of a guide rail element, a roller chain can also be guided in an interlocked manner. Such a length-variable guided rail element can be used, for example, with a device, arranged on a lateral frame, for drawing in webs of material into web-fed rotary printing presses.
A length-variable guide rail element in accordance with a second preferred embodiment of the present invention also assures the problem-free guidance of a roller chain. This guide rail element is particularly suited for draw-in devices for wide webs of material, for example in connection with web-fed rotary rotogravure printing presses, wherein a roller chain is simultaneously guided in each of the two lateral frames, which are connected by means of struts over the clear width of the press. Length-variable guide rail elements can be employed in the same way in sheet-fed rotary printing presses, which respectively guide an endless roller chain for a so-called gripper carriage.


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