JP2000034040A - Sheet conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet conveying device that conveys paper sheets smoothly both in an ordinary conveying direction and in a lateral direction perpendicular to it irrespective of the conveyed sheet size. SOLUTION: A plurality of conveying conveyors 5c are looped round driving rollers 5a and 5b. A plurality of rods 4a1 to 4a3 are disposed parallel over selected ones of the conveying conveyors 5c. Each of the rods 4a1 to 4a3 is mounted with a plurality of connectors 4b spaced in a conveying direction X of paper sheets P and formed in their bottom with a receiving groove in which a sphere fits in the state covered with a release protection cover 4f from above. The spheres in the receiving grooves roll on the conveying conveyors 5c to feed paper sheets P in the conveying direction X. On one side of the conveying conveyors 5c, a lateral feed mechanism using a drive motor 6 and a solenoid 7 is disposed to transfer paper sheets P in a lateral direction perpendicular to the conveying direction X or to register them relative to the makeup rollers of a printing machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying device for conveying a sheet discharged from a sheet feeding device to a printing machine.

[0002]

2. Description of the Related Art There is a case where a predetermined sheet discharged from a sheet feeding device is carried into a printing machine through a sheet conveying device, and characters and graphics are printed by the printing machine. FIG. 7 is a schematic side view showing an example of such a sheet transport device. In FIG. 7, a paper feed table 1 on which a predetermined number of sheets are placed
a, the sheet placed on the sheet feeding table 1a is sucked, and
A sucker-1b is provided to be raised to the position of the rack 1c.

[0003] The paper transport device 2 is composed of a paper feed mechanism 4 and a transport unit 5. The paper feed mechanism 4 includes a rod 4
a, a connector 4b, and a pressing roller 4c. The transport section 5 is provided with drive rollers 5a and 5b and a transport conveyor 5c. The sheet discharged from the sheet feeding device 1 is conveyed by the sheet feeding mechanism 4 and the conveying unit 5 of the sheet conveying device 2 and is conveyed to the printing machine 3.

A stop plate 3a, a rotating arm 3b, a first feed roller 3c, and a second feed roller 3d are provided at the entrance of the printing press 3.
Is provided. Further, in order to print on paper conveyed to the printing press 3, a plate making roller 3e on which characters, figures and the like are formed is arranged.

The leading end of the paper P conveyed from the paper transport device 2 to the printing press 3 abuts the stop plate 3a to stop the transfer once, and adjust the printing position on the paper P by the plate making roller 3e. Is made. Thereafter, the rotating arm 3b operates to move the stop plate 3a to a position outside the leading end position of the sheet P, and the sheet P is conveyed to the printing start position of the plate making roller 3e.

FIG. 6 is a perspective view showing a main part of the sheet conveying device 2. When the transport of the paper P is stopped by the stop plate 3a, the rod 4a is moved by a moving mechanism (not shown) in the direction of arrow Q, that is, in a direction parallel to the transport direction X of the paper P. As the rod 4a moves in the arrow Q direction, the connecting member 4b attached to the rod 4a also moves, and the pressing roller 4c fixed to the connecting member 4b moves.

[0007] The pressing roller 4c is positioned at the rear end of the sheet P. When the plate making roller 3e of the printing press 3 is set at the printing start position, the contact of the stop plate 3a with the leading end of the sheet P is released. At this time, the pressing roller 4c acts so as to push out the rear end of the sheet P to feed the sheet.

[0008]

The size of paper to be printed by the printing press is not the same, and various sizes of paper are carried into the printing press 3 according to the content of printing. For this reason, the size of the sheet P conveyed by the sheet conveying device 2, that is,
When the length of the sheet P from the leading end contacting the stop plate 3a to the rear end where the pressing roller 4c is located changes, the rod 4a is moved each time to move the pressing roller 4c and the sheet P. There is a problem that the alignment with the rear end is required, and the work of adjusting the paper feed mechanism becomes complicated.

The positioning of the sheet P and the plate making roller 3e is performed not only in the longitudinal direction of the sheet P (transport direction X) but also in the longitudinal direction.
It is also required in the lateral direction (the direction of arrow R in FIG. 6 orthogonal to the transport direction X). However, when the paper P is transported in the direction of arrow R by the pressing roller 4c, slippage occurs between the surface of the paper P and the contact surface of the pressing roller 4c, and the paper P and the plate-making roller 3e come into contact with each other. There is a problem that the lateral alignment cannot be performed smoothly.

The present invention has been made in view of the above problems, and has as its object to provide a paper transport apparatus capable of smoothly transporting a paper in a transport direction and in a horizontal direction perpendicular to the transport direction, regardless of the size of the paper carried into the printing press. .

[0011]

The object of the present invention is to provide a paper transport device comprising: a conveyor for transporting paper; rods arranged on the conveyor in a plurality of rows in a direction transverse to the transport direction of the paper;
A plurality of holding means provided with storage grooves in the lower part and fixed to each rod at intervals, a sphere inserted into the storage grooves of the holding means and in contact with the surface of the paper, and provided on one side edge of the conveyor. This is attained by providing a transfer means for transferring the sheet in the transverse direction to the transport direction.

As described above, a plurality of spheres for feeding the paper are arranged on the conveyor for transporting the paper in the length direction and the width direction of the paper, respectively. Since the transfer means to transfer is provided,
Regardless of the size of the sheet, the sheet can be fed smoothly when aligning with the plate making roller of the printing press.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sheet conveying device according to an embodiment of the present invention. 6 and 7
The same reference numerals are given to the same configurations or corresponding portions as in the conventional example, and detailed description is omitted. FIG. 3 is a side view partially showing the sheet transport device, and FIG. 4 is a perspective view thereof. In FIG. 3, when the stop plate 3a of the printing press 3 is in contact with the leading end of the sheet P, the second feed roller 3d is arranged at the position indicated by the solid line in FIG.

When the rotation arm 3b operates and the stop plate 3a moves in the direction of the arrow U to release the contact with the leading end of the sheet P, the second feed roller 3d moves to the position shown by the broken line. The sheet P descends, approaches the first feed roller 3c, and sends out the sheet P toward the plate making roller 3e.

Next, the configuration of the feed mechanism 4 of the paper transport device will be described. A storage groove 4e is provided in a lower portion of the connecting tool 4b fixed to the rod 4a, and the spherical body 4 is provided in the storage groove 4e.
d is inserted rotatably. The sphere 4 d is
c, and when the conveyor 5c moves, it rolls thereon. A cover -4f is arranged on the upper surface of the sphere 4d to prevent the sphere 4d from jumping out of the storage groove 4e. The cover -4f also acts as dust proof so that dust and the like do not adhere to the sphere 4d and the storage groove 4e. In FIG. 4, the cover -4f is shown by a broken line in order to make the arrangement of the sphere 4d easy to understand.

FIG. 1 is a perspective view showing the overall configuration of a paper transport device of the present invention, and FIG. 2 is a paper feed device 1, a paper transport device 2,
FIG. 2 is a side view showing an arrangement of the printing press 3. As shown in FIG. 1, a plurality of transport conveyors 5c are stretched between the driving rollers 5a and 5b. A plurality of connectors 4b are provided on the rod 4a1 disposed on the transport conveyor 5c at intervals along the transport direction of the paper P, and a lower portion of each connector 4b will be described with reference to FIGS. Sphere 4d and hippo-4
f is arranged.

A plurality of rows of rods 4a1, 4a2, 4a3 are arranged in parallel to the transport direction of the paper P on a plurality of transport conveyors 5c stretched between the drive rollers 5a, 5b. . In the example of FIG. 1, the rods 4a1, 4a2, and 4a3 are disposed on the transport conveyor 5c at both ends and the center.
As described above, the sphere 4d is moved in the transport direction (length direction) of the sheet P.
, And a plurality of them are arranged in a direction (lateral direction) orthogonal to the transport direction. The operation of the drive motor 6 for laterally feeding the paper P and the solenoid 7 will be described later.

A drive motor (not shown) operates to drive the drive motor.
When the rollers 5a and 5b rotate and the conveyor 5c starts moving, each sphere 4d rolls on the conveyor 5c.
When the paper P is transported by the transport conveyor 5c, some spheres 4d roll while pressing the paper P according to the size of the paper P. Therefore, when the contact of the stop plate 3a with the leading end of the sheet P is released, the sheet P is conveyed by the conveyor 5c so as to be pushed out by the action of the sphere 4d in contact with the sheet P. Will be.

Since a plurality of spheres 4d are arranged in the transport direction (length direction) of the paper P and in a direction (lateral direction) orthogonal to the transport direction, any one of the spheres 4d is independent of the size of the paper P. Rolls in contact with the paper P. For this reason, it is not necessary to align the paper P with the rear end in the transport direction of the paper P by the conventional pressing roller, and the paper can be fed smoothly.

FIG. 5 is an enlarged perspective view of the drive motor 6 and the solenoid 7 for feeding the paper P in the horizontal direction.
In FIG. 5, a first pulley 6a is connected to the output shaft of the drive motor 6. When the driving motor 6 rotates, the driving force is applied to the second pulley 6 fixed to one end of the rotating shaft 6d via the first pulley 6a and the transmission belt 6b.
c. When the rotating shaft 6d rotates, the lateral feed roller 6e fixed to the other end of the rotating shaft 6d rotates in the direction of arrow T. Second pulley 6c and horizontal feed roller
The roller 6e is arranged below the sheet P to be conveyed.

The solenoid 7 is provided with an elevating rod 7a that moves up and down in the direction of arrow S. Lifting rod 7a
A power transmission unit 7b is fixed to the upper end of the power transmission unit 7b. A roller 7c is rotatably mounted on the open end of the power transmission unit 7b and is arranged on the surface of the paper P. A fulcrum 7d is provided at an appropriate position of the power transmission section 7b. The roller 7c is disposed apart from the rotating surface of the lateral feed roller 6e, and the sheet P is transported in the X direction through the gap between the lateral feed roller 6e and the roller 7c. A guide plate 8 is provided on one side edge of the sheet transport device.

When the lifting rod 7a is raised by operating the solenoid 7 in a state where the leading end of the paper P is in contact with the stop plate 3a, the power transmission portion 7b provided at the upper leading end of the lifting rod 7a is connected to the fulcrum 7d. The roller 7c is lowered by the action, and the roller 7c attached to the leading end presses the surface of the sheet P. At this time, the rotational force of the lateral feed roller 6e is transmitted to the roller 7c, and the roller 7c rotates in the arrow U direction.

When the roller 7c rotates in the direction of arrow U, the sheet P is transported in the direction of arrow R, that is, in the horizontal direction perpendicular to the transport direction, and stops at the position of the guide plate 8. When the paper P is transported in the direction of arrow R, the sphere 4d
Rolls freely on the conveyor 5c, so that the paper P is transported smoothly in the direction of arrow R. After the width of the sheet P is aligned with the plate making roller 3e by the guide plate 8, the lifting rod 7a is lowered, the power transmission portion 7b is raised by the operation of the fulcrum 7d, and the roller 7c is raised. To separate from the surface of the sheet P.

The above-mentioned lateral feed roller 6e is constantly rotated in the direction of arrow T at a predetermined rotation speed. By operating the solenoid and applying a force to the surface of the sheet P by operating the roller 7c and the lateral feed roller 6e, the sheet P can be transported with high accuracy in the horizontal direction orthogonal to the transport direction. . Further, the means for transporting the paper in the horizontal direction can be easily configured by combining the operation of the drive motor and the operation of the solenoid.

In the example shown in FIG. 1, the driving rollers 5a, 5b
Although a plurality of conveyors 5c are stretched between them, a single wide conveyor may be provided. Also,
The plurality of rows of rods 4a1 to 4a3 are not limited to those arranged in parallel with the transport direction X of the paper P, and may be arranged on the transport conveyor in a plurality of rows inclined with respect to the transport direction X of the paper P. . The present invention is characterized in that a plurality of paper feeding spheres are arranged in the length direction and the width direction of the paper P, respectively.

[0026]

As described above, in the present invention,
A plurality of spheres for feeding the paper are arranged on the conveyor for transporting the paper in the length direction and the width direction of the paper, respectively, and a transport means for transporting the paper in the lateral direction with respect to the transport direction is provided. Therefore, regardless of the size of the sheet, the sheet can be fed smoothly when the position is adjusted with the plate making roller of the printing press.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a sheet conveying device according to an embodiment of the present invention.

FIG. 2 is a side view illustrating a sheet conveying device disposed between a sheet feeding device and a printing press.

FIG. 3 is a side view partially showing the sheet conveying device.

FIG. 4 is a perspective view partially showing a sheet conveying device.

FIG. 5 is an enlarged perspective view showing a drive motor for lateral feed and a solenoid.

FIG. 6 is a perspective view partially showing a conventional paper transport apparatus.

FIG. 7 is a side view showing a conventional paper transport apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 paper feeder 2 paper transporter 3 printing machine 4 paper feeder 4 a rod 4 b connector 4 d pressing roller 4 e storage groove 4 f cover 5 transporter 5 a, b drive roller 5 c transport conveyor 6 drive motor 6 e lateral Direction feed roller 7 Solenoid 8 Guide plate

Claims (1)

[Claims] 1. A conveyor for conveying paper, a plurality of rods arranged on the conveyor in a plurality of rows in a direction transverse to the conveying direction of the paper, and a plurality of storage grooves provided in a lower portion and fixed to each rod at intervals. Individual holding means, a sphere inserted into the storage groove of the holding means and abutting on the surface of the sheet, and a transfer means provided on one side edge of the conveyor for transferring the sheet in a direction transverse to the conveying direction. Paper transport device.