Sheet guide apparatus
a technology of guide apparatus and sheet, which is applied in the direction of registering device, thin material processing, article separation, etc., can solve the problems of inability to appropriately guide the next sheet to the front, inability to use the sheet pressing plate, and easy damage to the sheet surfa
Inactive Publication Date: 2009-03-19
KOMORI CORP
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- Abstract
- Description
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AI Technical Summary
Benefits of technology
[0006]It is an object of the present invention to provide a sheet guide apparatus which guides various types of sheets to be able to reliably abut against a front lay.
Problems solved by technology
If the sheet is thick, when thick sheets are conveyed to overlap like scales, a preceding sheet may raise the sheet pressing plate, so that the next sheet that follows cannot be appropriately guided to the front lay.
As the sheet and sheet pressing plate rub against each other, the sheet surface can be damaged easily.
Particularly, when the sheet is a film or the like that can readily be damaged, this sheet pressing plate cannot be employed.
However, an impact generated upon abutment of the thin sheet against the front lay can form wrinkles in the sheet, and deformation occurring in the sheet cannot be corrected.
Method used
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Embodiment Construction
[0018]A sheet guide apparatus according to one embodiment of the present invention will be described with reference to FIGS. 1A to 7B.
[0019]As shown in FIGS. 1A and 1B, a sheet guide apparatus 1 according to this embodiment comprises a feedboard 2 (sheet guide member) serving as a sheet guide member to which a sheet is conveyed from a feeder board (not shown), front lays 3 which are provided at the downstream (direction of an arrow A) end of the feedboard 2 in the sheet convey direction and abut against the downstream edge of the sheet in the convey direction to regulate the movement of the sheet in the convey direction, and a guide device 4 which guides the sheet to the front lays 3. Each front lay 3 comprises a pair of lays 3a against which the leading edge (downstream edge in the sheet convey direction) of the sheet abuts, a lay hook 3b which is arranged above the sheet and guides the sheet to the lays 3a, and a lever device 3c (FIG. 3B) which supports the lays 3a and lay hook 3b...
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In a sheet guide apparatus, a rotary guide body is supported to be rotatable and movable in directions to separate from and come close to the upper surface of a sheet. The outer surface of the rotary guide body comes into contact with the upper surface of the sheet to guide the sheet. A rotary guide body adjusting unit adjusts a position of the rotary guide body in directions to separate from and come close to the upper surface of the sheet. A plate-like guide body extends in the convey direction and lateral direction of the sheet, includes a guide surface which comes into contact with the upper surface of the sheet to guide the sheet, and is supported to be movable in the directions to separate from and come close to the upper surface of the sheet. A plate-like guide body adjusting unit adjusts a position of the plate-like guide body in the directions to separate from and come close to the upper surface of the sheet. The sheet contact portion on the outer surface of the rotary guide body is set below the guide surface of the plate-like guide body through at least one space portion which is formed in a downstream end of the plate-like guide body in the sheet convey direction to correspond to the rotary guide body.
Description
BACKGROUND OF THE INVENTION [0001]The present invention relates to a sheet guide apparatus which guides a conveyed sheet to a front lay.[0002]Generally, in a sheet guide apparatus used in a feed device or the like for a sheet-fed rotary printing press, the sheet is not always flat. For example, sometimes the front edge of the sheet may deform by, e.g., waving, warping, or curling. If the sheet deforms in this manner, it does not abut against a front lay but may ride over it. In order to prevent this, a sheet guide apparatus of this type is provided with a sheet pressing device, downstream of a feedboard in a sheet convey direction, which straightens a deforming sheet fed onto the feedboard. Hence, the sheet can be abutted against the front lay reliably, positioned by the front lay, and corrected from traveling skew, so that the sheet can be transferred to a sheet transfer device reliably.[0003]As a sheet pressing device of this type, a sheet pressing plate made of an elastic materia...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B65H9/00
CPCB65H5/38B65H9/08B65H11/007B65H2404/153B65H2404/6942B65H2220/09
Inventor TAKEUCHI, TETSUYA
Owner KOMORI CORP