Apparatus for glueing together material layers

In an apparatus for glueing together two different material layers (4, 5), of which one is intended to form a first cover in a folder, file or the like, and the other a second cover and/or a spine in the folder, file or the like, wherein said apparatus includes:

• glueing means (14) for coating one side of one of said layers with a glue strip along or close to one edge thereof to accommodate the glueing together of said layers (4, 5) in an area where the layers (4, 5) overlap each other:
• layer aligning means (23-25) for aligning said layers (4, 5);
• press means (26-28) for pressing both layers (4, 5) towards each other in the area of overlap during a pressing operation;
• and
• feed means (6-10, 15-18, 29-32) for feeding the layers (4, 5) in a feeding direction parallel to the length of said glue strip along a feed path through the apparatus from an upstream region of the apparatus to a downstream region of the apparatus;
• said apparatus characterized in that:
• said feed means (6-10, 15-18, 29-32) comprise rolls allowing both layers (4, 5) to be horizontally displaced thereon;
• said aligning means (23-25) comprise a first means (25) for engaging the leading end edges of both layers (4, 5) on the rolls in order to align the leading and edges of said layers (4, 5) relative to each other along a line perpendicular to the feeding direction, said first means (25) including a stop member (25) which is disposed in the immediate vicinity of the press means (26-28) and downstream of both said glueing means (14) and said press means (26-28) and against which the layers (4, 5) are moved for engagement before the pressing operation, said stop member (25) being displaceable into and out of said feed path to permit continued feeding of the layers (4, 5) after the pressing operation;
• and
• said aligning means (23-25) also comprise a second means (23, 24) downstream of glueing means (14) for displacing both layers (4, 5) on the rolls perpendicular to the feeding direction to overlap the layers (4, 5) in the overlapping area and align the longitudinal edges of said layers (4, 5) relative to a line parallel to the feeding direction which is parallel to the length of said glue strip.