JPH1038554A - Method for judging work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for judging works such as sheet, etc., in which the length and interval of sheet can be judged accurately by detecting whether or not the length and interval of sheet are within a standard tolerance. SOLUTION: This method is used to judge the length of a sheet and interval between transferred sheets while predetermined-size sheets are transferred on a conveyor with a preset interval of distance from a sheet supply device, and a sheet arrival detection sensor 5, a sensor 6 for detecting short-size of sheet, a sensor 7 for detecting long-size of sheet, and a sheet interval detection sensor 8 are provided on the conveyor 3 so as to detect the length of sheet and its interval.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work discriminating method for accurately discriminating the length and interval of a sheet-like work.

[0002]

2. Description of the Related Art To determine whether or not a sheet-like work has passed a predetermined dimensional standard, the work length is accurately detected. In addition, it is important that the work interval is set within the predetermined interval for the next process and is processed.

Conventionally, for example, a method of determining a sheet-like work for determining a fixed-size sheet length and an interval is such that when a sheet is conveyed on a conveyor by a sheet supply device, one sheet detection sensor is installed on the conveyor. Then, the time during which the sheet is detected is measured to determine the length of the sheet, the time during which the sheet is not detected is measured, and the interval between the sheets is determined.

[0004]

The conventional sheet-like work discriminating method has a drawback in that when the conveying speed of the sheet on the conveyor fluctuates, an erroneous judgment occurs in the sheet length and the sheet interval.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of discriminating a work such as a sheet, which detects whether a sheet length and a sheet interval are within a standard tolerance and accurately judges the sheet length and the sheet interval.

[0006]

According to the present invention, there is provided a method for discriminating a work in which a sheet-like work is conveyed from a work supply device at a predetermined interval on a conveyer and a work length and a work interval are determined. A work arrival detection sensor, a work short size detection sensor, a work long size detection sensor, and a work interval detection sensor are installed on the conveyor, and the work length and the work interval are detected to determine the work. A method is obtained.

[0007]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory diagram showing a sheet feeding device, a conveyor, and a processing device and showing how a sheet is conveyed.
FIG. 2 is an explanatory diagram showing an outline of the sheet determination method of the present invention.

The sheet-like work is, for example, a magnetic card such as a prepaid card or a telephone card. As shown in FIG. 1, a sheet 4 such as a magnetic card is supplied from a sheet supply device 1, moves on a conveyor 3 in a direction of an arrow 9, and is conveyed to a processing device 2 in the next step.

As shown in FIG. 2, fixed size sheets A10, B
The various sensors 11 move on the conveyor 3 in the conveying direction 12 to detect the sheet length and the interval, and determine the sheet length and the interval between the sheets. It is composed of a long detection sensor 7 and a sheet interval detection sensor 8.

With reference to the set position of the sheet arrival detection sensor 5, a short sheet length detection sensor 6 is installed at the position of the minimum length A of the sheet size tolerance, and the sheet length detection sensor at the position of the maximum length B of the sheet size tolerance. 7 and the various sensors are attached by installing the sheet interval detection sensor 8 at the position of the minimum length C of the sheet interval dimension tolerance.

More specifically, the sheet arrival detection sensor 5 detects the leading edge of the sheet A10 sent from the sheet feeding device 1.

When the sheet arrival detection sensor 5 detects the leading edge of the sheet A10, if the length of the sheet A10 is outside the minus range of the sheet length tolerance, the sheet short-length detection sensor 6 detects the rearmost end of the sheet A10. Is located where it cannot be detected.

When the sheet arrival detection sensor 5 detects the leading edge of the sheet A10, if the length of the sheet A is outside the tolerance of the sheet length, the sheet length detection sensor 7 detects the rearmost end of the sheet A10. It is located at a position where it can be detected.

When the sheet interval detecting sensor 8 conveys the sheet A10 having the normal sheet length and the sheet B11 at the normal conveying speed and the supply interval of the sheet supplying device, the sheet arrival detecting sensor 5 detects the leading edge of the sheet A10. Is detected, if the distance from the sheet B11 is outside the minus range of the tolerance, the sheet B11 is located at a position where the leading edge of the sheet B11 can be detected.

Next, a method for determining a sheet will be described.

When the sheets A10 and B11 are conveyed on the conveyor 3, the various sensors show a state of detecting the sheets as shown in Tables 1 and 2 below.

The symbol → shown in Table 1 indicates the moment when the sheet arrival detection sensor detects the leading edge of the sheet A. Sign ○
Indicates that a sheet is being detected. The symbol x indicates a state in which no sheet is detected.

[0019]

The symbol → shown in Table 2 has the same meaning as in Table 1, and the symbol × has the same meaning as in Table 1.

[0021]

The state shown in Table 1 indicates that, at the moment when the sheet arrival detection sensor 5 detects the leading edge of the sheet A10, the sheet short-length detection sensor 6 and the sheet long-length detection sensor 7 have the sign x, so that the sheet A10 Because the end is not detected,
The sheet A10 is determined to be shorter than the standard, and the sheet length is determined to be out of the standard and abnormal.

The state shown in Table 1 indicates that at the moment when the sheet arrival detection sensor 5 detects the leading edge of the sheet A10, the sheet short-length detection sensor 6 has the sign 符号. Since the detection sensor 7 has the sign x,
Since the rear end of the sheet A10 is not detected, the sheet A
10 is within the tolerance of the standard, passed, and is determined to be normal.

The state shown in Table 1 indicates that the moment the sheet arrival detection sensor 5 detects the leading edge of the sheet A10, the sheet short-length detection sensor 6 has a sign X, and therefore the card A10 is not detected. . Therefore, sheet A1
Since the length of 0 is shorter than the standard, it is determined to be abnormal. Further, as shown in Table 2, the sheet A10 is indicated by the symbol で by the sheet interval detection sensor 8, and the sheet B11 is being detected, and it is determined that the sheet interval is abnormal.

The state shown in Table 1 indicates that the sensor 6 for detecting the shortest dimension of the sheet and the sensor 7 for detecting the front of the sheet at the moment when the sheet arrival detection sensor 5 detects the leading edge of the sheet A10 are indicated by the symbol ○.
Therefore, the rear end of the sheet A10 is detected. Therefore, the sheet A10 is determined to be abnormal because it is longer than the standard. In this case, in Table 2, if the sign is “○”, the sheet B11
Is determined to be short and becomes abnormal.

At the moment when the sheet arrival detection sensor 5 detects the leading edge of the sheet A10, the sheet interval detection sensor 8 has a sign x, and the sheet B11 has not been detected. Is determined to be normal.

The state shown in Table 2 indicates that the sheet interval detecting sensor 8 detects the sheet B11 at the moment when the sheet arrival detecting sensor 5 detects the leading edge of the sheet A10. It is determined to be abnormal. At this time, the sheet B11 may be longer than the standard.
11 is determined to be abnormal by the following various sensors.

[0028]

According to the present invention, it is possible to provide a method of discriminating a work such as a sheet, which detects whether or not the sheet length and the sheet interval are within a standard tolerance and judges the sheet length and the sheet interval accurately.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a sheet feeding device, a conveyor, and a processing device, and showing how a sheet is conveyed.

FIG. 2 is an explanatory view showing an outline of a sheet discrimination method of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sheet feeding device 2 processing device 3 conveyor 4 sheet 5 sheet arrival detection sensor 6 sheet short dimension detection sensor 7 sheet long dimension detection sensor 8 sheet interval detection sensor 9 arrow 10 (fixed size) sheet A 11 (fixed size) sheet B 12 Transport direction A Minimum length of sheet dimension tolerance B Maximum length of sheet dimension tolerance C Minimum length of sheet interval dimension tolerance

Claims (1)

[Claims] 1. A work discriminating method for conveying a sheet-like work from a work supply device at a predetermined interval on a conveyor and determining a work length and a work interval, comprising: a work arrival detecting sensor on the conveyor; A work discriminating method comprising: installing a work short dimension detection sensor, a work long dimension detection sensor, and a work interval detection sensor, and detecting a work length and a work interval.