JP3853486B2 - Paper transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet conveying apparatus.
[0002]
[Prior art]
For example, when transporting printed or copied paper sent from a printing machine or copying machine to a bookbinding machine, etc., for the purpose of matching the difference in processing speed between the printing machine and the bookbinding machine or stacking the paper There is a case where a paper transport device is installed to reduce the speed of the paper sent from the printing machine.
[0003]
In this case, the paper transport device includes a paper transport unit including a belt or a roller, a guide plate for transporting the paper sent from the printing machine and guiding the paper onto the paper transport unit, and the paper on the paper transport unit to the paper transport unit. In addition to a pressing roller device for pressing, the paper after being guided by the guide plate and placed on the paper conveying means is lightly pressed against the paper conveying means to prevent the paper from being lifted or misaligned during the conveyance. A holding guide plate is disposed along the sheet conveying means.
[0004]
[Problems to be solved by the invention]
There is a sheet conveying device configured as described above, in which a guide plate and a pressing guide plate are integrally formed by a belt-shaped guide by bending between a guide portion and a pressing guide portion. In this case, it is necessary to change the size of the guide portion depending on the size of the paper. A plurality of guides having different guide portion sizes are prepared and replaced according to the size of the paper, or a plurality of guides are provided at the base of the guide portion. The fixing hole is formed, and the hole is selected and replaced according to the size of the paper.
[0005]
However, when the guide is changed or replaced according to the size of the paper in this way, especially when the size of the paper changes frequently, the guide is often changed or replaced. This is not only troublesome, but also has a problem that the size of the holding guide portion cannot be adjusted.
[0006]
The present invention has been made in view of such a problem, and it is possible to easily change the size of the guide portion of the belt-like guide formed integrally with the guide plate and the holding guide plate according to the size of the paper. Another object of the present invention is to provide a paper transport device that can adjust the size of the holding guide portion.
[0007]
[Means for Solving the Problems]
The present invention guides a paper transport path formed by a paper transport means , and a sheet that is fixed at one end to a machine frame of a paper transport inlet section of the paper transport path and that is transported from the paper transport inlet section onto the paper transport path. with strip-shaped guide and extending along the sheet conveyance path for pressing the sheet to be conveyed by said sheet conveying path from the upper surface to the paper transport path, it is movable in the sheet conveying direction and the reverse direction of the paper transport path, wherein And a pressing roller device that presses the paper transporting path to the paper transporting means , wherein the pressing roller device bends the belt-shaped guide onto the paper transporting path. A joining portion is provided, and the bending position of the belt-shaped guide is changed by the movement of the pressing roller device .
[0008]
In the present invention, an engagement portion that engages a belt-like guide is provided in a pressing roller device that is moved and positioned along the paper conveying means in accordance with the size of the paper, and the belt-like guide is moved by this engagement portion. The guide part and the pressing guide part are formed by bending. Therefore, when the pressing roller device is moved according to the size of the paper, the size of the guide portion of the belt-like guide and the size of the holding guide portion are set along with the movement, and the size of the belt-like guide according to the size of the paper is set. The time for replacement or replacement can be saved, and the size of the holding guide portion of the belt-like guide can be adjusted by adjusting the movement of the pressing roller device.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a sheet conveying apparatus according to an embodiment of the present invention, FIGS. 2 to 5 are diagrams for explaining the operation of the sheet conveying apparatus of FIG. 1, and FIG. 3 is a schematic side view when pressing a small size paper, FIG. 4 is a schematic perspective view showing a pressing state of a large size paper, and FIG. 5 is when pressing a large size paper. It is a schematic side view.
[0010]
In FIG. 1, 1 is a conveying belt that forms a sheet conveying means for conveying a sheet, 2 is a motor that drives the conveying belt 1 to circulate, 3 is a pressing roller device, 4 is disposed along the conveying belt 1, and one end base is A belt-like guide formed in the shape of a belt plate made of metal or synthetic resin attached to a support metal fitting 6 fixed to a machine frame (not shown) of a paper carry-in entrance, 5 is a transport belt at a position where the belt-like guide 4 abuts. 1, the abutting plates 7a and 7b which are located on the same plane as the belt 1 and are arranged along the conveying belt 1, are arranged at the paper carry-in portion, and are paired with a pair of rollers for carrying the paper in between. A feed screw shaft 9 connected to a drive motor (not shown) is a guide bar that guides the movement of the pressing roller device 3 along the conveyor belt 1.
[0011]
The pressing roller device 3 includes a frame body 3 a formed in a substantially U-shape downward, and a roller 3 b that is pivotally supported by the frame body 3 a and faces the transport belt 1 and presses the paper on the transport belt 1 against the transport belt 1. And a support plate 3c formed with an insertion hole 3e through which the strip-shaped guide 4 is inserted and a projection 3d that abuts the strip-shaped guide 4 erected below the insertion hole 3e. The engaging portion is configured to be engaged with the feed screw shaft 8 and is arranged on the conveying belt 1 by being screwed with the feed screw shaft 8.
[0012]
The strip-shaped guide 4 whose one end base is fixed to the support fitting 6 passes through the insertion hole 3e of the support plate 3c and abuts diagonally below the protrusion 3d of the support plate 3c and is bent obliquely downward. The holding guide portion 4 b of the bent band-shaped guide 4 is in light contact with the contact plate 5. From the roller 3b to the fixing portion of the holding body 6 of the belt-shaped guide 4 becomes a guide portion 4a for guiding the paper to be carried onto the conveyance belt 1, and on the conveyance belt 1 from the roller 3b to the free end on the downstream side in the conveyance direction. It becomes the press guide part 4b which presses a paper lightly.
[0013]
The sheet conveying apparatus configured as described above is disposed, for example, between the printing machine and the bookbinding machine or in the preceding stage of the sheet binding machine, and rotates and feeds the feed screw shaft 8 according to the size of the sheet to be loaded. The roller device 3 is moved and positioned and fixed at a position corresponding to the size of the paper. For example, as shown in FIGS. 2 and 3, when the paper 10 is a small size paper such as A5 plate (the paper is folded in FIG. 2), the feed screw shaft 8 is rotated clockwise. Driven, the pressure roller device 3 is moved and fixed in the direction of the carry-in port.
[0014]
This is because the loaded paper 10 is placed on the transport belt 1 as it is and the paper 10 is pressed against the transport belt 1 by the roller 3b to be stabilized. This is because the posture of the paper 10 is disturbed if it is longer than the size of 10, and this is prevented. The movement of the pressing roller device 3 changes the bending position of the belt-like guide 4, and the size of the guide portion 4a of the belt-like guide 4 is also shortened at the same time. Only the upper side of the sheet 10 is applied to the guide portion 4a and there is no resistance. The roller 3 b is guided and placed on the conveyor belt 1.
[0015]
In this case, the speed of the transport belt 1 is set slower than the speed of the paper 10 that is carried in, that is, it is set slower than the processing time of the subsequent stage of the paper transport device. The sheets 10 are stacked and stacked, and the paper 10 on the transport belt 1 is lightly pressed against the transport belt 1 by the pressing guide portion 4b of the belt-shaped guide 4 and transported to the next step.
[0016]
For example, as shown in FIGS. 4 and 5, when the paper 10 is a large paper such as A3 plate (the paper in FIG. 4 is also folded in half), the feed screw shaft 8 is moved. It is rotationally driven counterclockwise, and the pressing roller device 3 is moved and fixed in a direction away from the carry-in port.
[0017]
The movement of the pressing roller device 3 changes the bending position of the belt-like guide 4, and the size of the guide portion 4a of the belt-like guide 4 is also lengthened at the same time. And placed on the conveyor belt 1. Also in this case, the speed of the transport belt 1 is set slower than the speed of the paper 10 that is carried in, and the paper 10 on the transport belt 1 is accumulated in a partially overlapped state. 10 is lightly pressed against the conveyor belt 1 by the pressing guide portion 4b of the belt-shaped guide 4 and conveyed to the next step.
[0018]
In the above embodiment, the engaging portion that slidably engages the belt-shaped guide 4 formed in the pressing roller device 3 is constituted by the support plate 3c and the protrusion 3d, and is simplified. However, it may be formed in a guide plate or a guide groove for bending the belt-like guide 4. The paper conveying means may be a conveying roller.
[0019]
【The invention's effect】
As described above, according to the present invention, when the pressure roller device is moved according to the size of the paper to be conveyed, the size of the guide portion of the belt-shaped guide is set along with the movement, and the belt-like shape accompanying the size of the paper is set. The size of the guide portion of the guide is simplified, and the size of the holding guide portion of the belt-like guide can be freely adjusted by adjusting the movement of the pressing roller device, so that a paper transport device that is easy to handle can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a configuration of a sheet conveying device according to an embodiment of the present invention.
FIG. 2 is a schematic perspective view showing a pressed state of small-size paper according to the embodiment.
FIG. 3 is a schematic side view of the embodiment when pressing small-size paper.
FIG. 4 is a schematic perspective view illustrating a pressed state of a large-size sheet according to the embodiment.
FIG. 5 is a schematic side view of the embodiment when pressing a large size sheet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Conveying belt 2 Motor 3 Press roller apparatus 3a Frame 3b Roller 3c Support plate 3d Protrusion 3e Insertion hole 4 Strip-shaped guide 4a Guide part 4b Holding guide part 5 Abutting plate 7a, 7b A pair of carrying-in rollers 8 Feed screw shaft 9 Guide rod

Claims (1)

A sheet conveying path formed by the sheet conveying means, one end of which is fixed to the machine frame of the sheet carrying-in section of the sheet conveying path, guides the sheet carried from the sheet carrying-in section onto the sheet conveying path, and the sheet A belt-shaped guide that extends along the paper transport path for pressing the paper transported on the transport path from the upper surface to the paper transport path, and is movable in a direction opposite to the paper transport direction of the paper transport path. A paper conveying apparatus comprising a pressing roller device that presses the paper to be conveyed to the paper conveying means, and a slidable engaging portion for bending the belt-shaped guide onto the paper conveying path is provided in the pressing roller device. The sheet conveying device, wherein the bending position of the belt-like guide is changed by the movement of the pressing roller device.

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