JP2587076Y2 - Sheet transport device applied to sheet inspection device - Google Patents

Description

[Detailed description of the invention]

[0001]

Shi INVENTION The present invention relates to a particular applied to a sheet inspection apparatus for traveling by winding one or a plurality of roll Oh Ru needs to be conveyed in close contact with the roll outer surface <br / > This is related to the transport device.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional plurality of rolls (inspection cylinder).
1 shows a sheet transporting apparatus applied to a sheet inspection apparatus that travels by winding a sheet. In FIG. 6, the front end of the sheet 11 transferred from the previous process is gripped by the gripper 12a provided on a part of the outer periphery of the first inspection cylinder 4a, and is rotated and transferred.
A method is adopted in which the gripper 12b on the side of the next inspection cylinder 4b, which rotates synchronously in contact therewith, is gripped, then the gripper 12a is released and transported sequentially downstream. This operation is sequentially repeated, and the sheets 11 are transported one by one downstream.

[0003]

However, since the conventional apparatus does not have the holding means on the rear end side of the sheet, the rear end of the sheet may be disengaged from the guide section in the previous process, and the running becomes unstable. There were inconveniences such as floating from the peripheral surface of the inspection cylinder, breakage of the rear end due to flapping, and damage. This is a fatal problem in a device that continuously detects defects in the course of winding and running the inspection cylinders 4a and 4b, such as the sheet inspection device illustrated in particular. That is, since the sheet 11 rises from the outer peripheral surface of the inspection cylinder 4b, the inspection accuracy becomes unstable, and a problem occurs such that a defective sheet cannot be determined or a rear end of the paper cannot be inspected. There were drawbacks such as being judged as paper. Conventionally, sheet 11
It has been an important research task to improve the functions such as being able to inspect over a wider area and to perform more accurate (reliable) inspection.

As described above, in an apparatus for continuously inspecting a sheet running around a roll (inspection cylinder) wound around a roll around the roll to inspect for defects, maintenance of linearity in the width direction of the paper, in other words, In this case, it is important to run the paper with the paper completely adhered to the drum surface. That is, when the sheet travels with the sheet lifted from the outer peripheral surface of the inspection cylinder, there has been a problem that the inspection becomes impossible or the true defect inspection cannot be correctly performed due to the lifting of the paper.

According to the present invention, a sheet inspection is performed so that the sheet can be properly adhered to the inspection cylinder and run stably.
An object of the present invention is to provide a sheet conveying device applied to an inspection device, and to solve the conventional problem.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a sheet conveying apparatus applied to a sheet inspection apparatus of a type in which a front end of a sheet is gripped and rotated and transferred via a gripper provided on a part of the outer peripheral surface of a roll. A set or a plurality of brushes, which are arranged side by side in the axial direction of the roll, are obliquely attached to the outer peripheral surface of the roll, and are configured so that the pressing force can be adjusted, and the brushes are arranged over the entire width of the sheet. Watatta
And a sheet inspection device on the downstream side of the brush.
After the sheet is arranged and the sheet is caused to travel between the roll peripheral surface and the brush , an inspection is performed , and this is used as means for solving the problem.

[0007]

In the device according to the present invention, the back tension can be applied to the rear end of the sheet traveling in the sheet advancing direction by the frictional resistance generated by the pressing and sandwiching of the roll and the brush. Accordingly, the sheet is completely adhered to the outer peripheral surface of the roll (inspection cylinder) and stable traveling can be maintained, so that the inspection accuracy can be greatly improved.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 5 show an embodiment of the present invention, FIG. 1 is an explanatory view of an inspection body of a sheet inspection device incorporating a paper pressing brush, FIG.
2 to 4 are configuration diagrams showing one embodiment of a body pressing brush portion, and FIG. 5 is a functional explanatory diagram of a paper pressing device showing an embodiment of the present invention. The paper pressing brush 1 is composed of a beam 2, a brush 3, and a spring 7 as shown in FIGS. 2 to 4, is arranged in parallel with the inspection cylinder 4, and has bearings 5a, 5 at both ends.
It is attached to a rotating shaft 6 that is rotatably supported via b. Further, the spring 7 is configured to hold the brush 3 between the beam 2 and functions to apply an acting force to the brush 1 in a substantially circumferential direction of the rotating shaft 6. The bearings 5a and 5b form a slit groove 8 in a part of the hole,
Rotary shaft 6 supported by tightening screw 13
Can be fixed in an arbitrary phase relationship.

The rotary shaft 6 is supported by bearings 5a and 5b mounted on brackets 10a and 10b projecting from both side frames 9a and 9b of the apparatus. As shown in FIG. And the paper holding brush 1 is set in an initial condition, and the tip of the brush 3 is set to have a predetermined pressing force, and the outer peripheral surfaces of the testing cylinders 4a and 4b are provided. It is adjusted so that it slides on. The sheet 11 to be inspected is gripped by a gripper 12 provided in the axial direction on the periphery of the inspection cylinder 4a transferred from the previous process.
a of which the front end is gripped by the brush 3e
, And is rotationally transported in the direction of the arrow in FIG.

Next, the operation of the embodiment constructed as described above will be described. The back tension acts on the rear end of the sheet in conjunction with the transfer due to the sliding resistance of the brush 1. As a result, a predetermined tension (back tension) is applied to the sheet 11 in the advancing direction, and one side plane of the sheet 11 can be completely brought into close contact with the inspection cylinders 4a and 4b as shown in FIG. , Inspection cylinder 4a, 4
The linearity in the axial direction of b is guaranteed. Inspection cylinder 4a and inspection
On the line connecting the center of the body 4b, the gripper 12a
The upper part 12b is rebited. Both bodies rotate synchronously
And two grippers 12 provided in the axial direction on the circumference of the inspection cylinder.
a and 12b intersect at the same phase every rotation.
You. At this time, the plurality of staggered gripper claws
The gripper 12a performs a release operation, and the gripper 12b performs
The cam that moves the claw axis of the gripper to perform the biting operation
Frame provided so that it does not rotate with the same roll
Is attached to the front end of the sheet.
And then transport the sheet.

In the present invention, the defect inspection of the sheet 11 is performed as follows.
Inspection is performed continuously in the axial direction of the inspection cylinder 4b, that is, over the entire width of the sheet and as the sheet travels. Accurate and stable inspection can be performed by ensuring the linearity in the width direction. In this connection, bending deformation, wrinkles and breakage due to flapping of the rear end of the seat are reduced, and the pressing force of the brush 1 against the running seat 11 can be arbitrarily changed by adjusting the phase of the rotating shaft 6. Since the pressing force at both ends in the width direction can be variably adjusted by the torsion of the rotating shaft 6, it is possible to prevent skewing or the like during running of the seat. In addition, various types of structures other than the above-described example are conceivable for the structure of the brush portion, such as a plurality of sets of pressing force varying means for the paper pressing brush 1 in the sheet width direction.

[0012]

As has been described [devised effect described above in detail the present invention is low
Are arranged side by side in the axial direction of the roll and
Structured so that it can be mounted diagonally and the pressing force can be adjusted
By providing one or more sets of brushes,
The pressing force of the brush is generated by the bending deformation of the hair.
It is almost linear, and the deformation state changes due to the rotation of the trunk
Since there is no adjustment, the adjustment of the pressing pressure is easy. Also , since an appropriate tension is applied to the running sheet by the action of the pressing brush, the sheet can be run in a state of being completely in close contact with the roll. Therefore, the linearity of the sheet in the roll axis direction is ensured, and the area and accuracy of the sheet inspection performed on the outer peripheral surface of the roll are improved. In addition, wrinkles, folds, and the like caused by tarmi during the sheet conveyance are reduced, and the yield rate can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a sheet conveying apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a paper pressing unit according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is an operation explanatory view of the device in FIG. 1;

FIG. 6 is a side view of a conventional sheet conveying apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper press brush 2 Beam 3 Brush 4, 4a, 4b Inspection cylinder 5, 5a, 5b Bearing 6 Rotating shaft 7 Spring 8 Slit groove 10a, 10b Bracket 11 Sheet 12a, 12b Gripper

Claims (1)

(57) [Scope of request for utility model registration] 1. A sheet conveying device applied to a sheet inspection device of a type in which a front end of a sheet is gripped and rotated and conveyed via a gripper provided on a part of an outer peripheral surface of a roll, the sheet conveying device being arranged side by side in the axial direction of the roll. Rutotomoni attached obliquely to the roll outer surface, and includes a pair or a plurality of sets of brushes pressing force is configured to be adjusted, the brush
Pressed across the entire width of the sheet, downstream of the brush
To dispose the sheet inspection device, after the sheet so as to travel between the roll peripheral surface and the brush, the sheet conveyance applied to the sheet inspection device, wherein the this <br/> inspect apparatus. "