JPH06325234A - Number of sheets detector of sheet metal article - Google Patents

Abstract

PURPOSE:To make possible the detection of the number of sheets of sheet metal article at a low cost by detecting the number of sheets of sheet metal article which is possible to bend and deform by utilizing the flexibility. CONSTITUTION:This is a card number detector confirming that cards 16 are supplied one by one, for instance. Namely, when one of the card 16 is placed on a table 12 and a lever 21 lowers up to a prescribed location by the actuation of a cylinder 19, a detection rod 13 also lowers, is abutted on the card 16 and actuates pressing pressure F by a spring 24 on the card 16. At this time, the bending amount of the card 16 is in proportion to pressing pressure F and is in inverse proportion to the cube of the thickness t of the card 16. The detection rod 13 moves downwards according to the bending amount W at this time, the projected light from an optical sensor 14 passes the reduced diameter part 25 of the detection rod 13 and the optical sensor 14 output an ON signal. The bending amount W' when 2 sheets of the card 16 are placed becomes 1/8W because the thickness is doubled, the projected light from the optical sensor 14 is shielded by the detection rod 13 and the optical sensor 14 outputs an OFF signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin plate article number detecting apparatus for detecting the number of flexibly deformable thin plate articles by utilizing its flexibility.

[0002]

2. Description of the Related Art Conventionally, there is a thin plate article, for example, a card number detecting device for confirming that cards are supplied one by one as shown in FIG. In this conventional sheet number detecting device, the lever 2 is rotatably supported on the table 1 via the bracket 3, and the cylinder 5 and the gap sensor 6 are also supported via the support column 4. Lever 2
A detection rod 7 is attached to one end of the lever 2, and the lever 2 is biased by a spring 8 so that the detection rod 7 advances toward the table 1.

A piston rod 9 of the cylinder 5 projects from the cylinder 5 to press the other end 2A of the lever 2 to float the tip of the detection rod 7 from the table 1. Table 1
When the card 10 is supplied to the predetermined position of the cylinder 5,
The piston rod 9 is pulled in, the lever 2 is rotated by the urging force of the spring 8, and the tip of the detection rod 7 comes into contact with the surface of the card 10. If the gap sensor 6 detects the distance between the gap sensor 6 and the other end portion 2A of the lever 2 at this time, whether one card 10 is supplied,
It is detected whether the number is two or the card 10 does not exist.

[0004]

However, in the above-mentioned number-of-cards detecting device, the number of the supplied cards 10 is detected by the difference in the thickness of the cards 10 supplied on the table 1. For example, when the thickness is as thin as 0.3 mm, the number of the cards 10 may not be accurately detected unless the gap sensor 6 is highly accurate, and the cost increase is inevitable.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a thin plate article number detecting apparatus capable of detecting the number of thin sheet articles at a low cost.

[0006]

According to the present invention, there is provided a supporting member for flexibly deforming a thin plate article, and a constant pressing force applied to the thin plate article supported by the supporting member to flexibly deform the thin plate article. The pressing member to be in a state and a detection sensor for detecting the moving position of the pressing member.

[0007]

The amount of flexural deformation of the thin plate article varies greatly depending on the number of thin plate articles. Therefore, the moving position of the pressing member that flexibly deforms the thin sheet article also remarkably differs depending on the number of thin plate articles. Therefore, since the moving position of the pressing member in the flexurally deformed state of the thin plate article can be easily detected by a detection sensor which is not so accurate, the number of thin plate articles in which the pressing member is flexibly deformed, for example, one or two. It is possible to detect the absence of a single sheet or a thin plate article at low cost.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a card number detecting device to which an embodiment of the thin plate number detecting device according to the present invention is applied, and FIG.
FIG. 1B is a view as seen from the arrow IB in FIG. 2 is shown in FIG.
The card of (A) is shown, (A) is a top view, (B)
Is a side view. FIG. 3A is an operation diagram showing a case where there is no card in the card number detecting device of FIG. 1A, and FIG. 3B is a view taken in the direction of arrow IIIB of FIG. 3A. Figure 4
FIG. 1A is an operation diagram showing a case where there are two cards in the card number detecting device of FIG. 1A, and FIG. 4B is a view as seen from the IVB arrow of FIG. 4A.

A card number detecting device 1 shown in FIG.
Reference numeral 1 denotes a table 12 as a support member, a detection rod 13 as a pressing member, and an optical sensor 1 as a detection sensor.
4 and.

The table 12 is provided with an opening 15 having a width L,
A card 16 is placed at a position facing the opening 15, and the card 16 is flexibly supported in a deformable manner. Card 16
2 is a flexibly deformable card having a length A, a width B, and a thickness t (for example, t = 0.28 mm) as shown in FIGS. 2 (A) and 2 (B).

A pillar 17 is erected on the table 12, and a rail 18 and a cylinder 19 are installed on the pillar 17. The rail 18 extends in the vertical direction, and the rail 1
A slider 20 is slidably disposed on the slider 8. Cylinder 1
The tip of the piston rod 19A of No. 9 has the slider 20
The slider 20 is fixed to the rail 18 and runs along the rail 18.

A lever 21 is fixed to the slider 20. The lever 21 extends in the horizontal direction, and the detection rod 13 is slidably supported by the tip of the lever 21 via a rod guide 22. This detection rod 13 is mounted on the table 1
It is supported so as to face the substantially central portion of the card 16 placed on the second card. A retainer 23 is fixed to the lower portion of the detection rod 13, and a spring 24 is interposed between the retainer 23 and the rod guide 22. This spring 24
A constant pressing force F is applied to the card 16 placed on the table 12 as described above.

At the upper end of the detection rod 13, there is a reduced diameter portion 25.
Is formed. A mounting rod 26 is fixed to the tip of the lever 21, and a pair of optical sensors 14 are installed on the mounting rod 26. As shown in FIG. 1B, when the light 14A projected from the optical sensor 14 passes through the reduced diameter portion 25 of the detection rod 13, the optical sensor 14 outputs an ON signal. Further, as shown in FIGS. 3B and 4B, when the light 14A does not pass through the reduced diameter portion 25 of the detection rod 13 and is shielded by the upper end portion of the detection rod 13, an optical sensor 14 outputs an off signal. in this way,
The moving position of the detection rod 13 is detected by the ON signal and the OFF signal from the optical sensor 14. Incidentally, reference numeral 2 in the drawing
Reference numeral 7 denotes a stopper fixed to the detection rod 13.

As shown in FIG. 1A, when one card 16 is placed on the table 12 and the lever 21 is lowered to a predetermined position by the operation of the cylinder 19, the detection rod 13 is also lowered and the card. The card 16 is brought into contact with the card 16, and a pressing force F by the spring 24 is applied to the card 16. At this time, the bending amount W of the card 16 is a mathematical expression.

[0015]

[Equation 1]

Here, E represents Young's modulus. The deflection amount W at this time causes the detection rod 13 to move downward, the light emitted from the optical sensor 14 passes through the reduced diameter portion 25 of the detection rod 13, and the optical sensor 14 outputs an ON signal.

Further, as shown in FIG. 4 (A), when two cards 16 are placed on the table 12 and the detection rod 13 descends and comes into contact with the card 16, the spring 24 is used.
Applies a pressing force F having substantially the same value as the pressing force F to the two cards 16.

Deflection amount W'of the two cards 16 at this time
Is a mathematical formula.

[0019]

[Equation 2]

Therefore, the amount of movement of the detection rod 13 is 1/8 that in the case where the number of the card 16 is one, and the light emitted from the optical sensor 14 is emitted from the upper end of the detection rod 13 except the reduced diameter portion 25. Blocked by the section, the photosensor 14 outputs an off signal.

Further, as shown in FIG. 3A, when the card 16 is not placed on the table 12, when the detection rod 13 descends, the stopper 27 is kept in contact with the upper surface of the rod guide 22. Since the tip of this detection rod 13 is positioned inside the opening 15 of the table 12 as it is, the light emitted from the optical sensor 14 is blocked by the tip of the detection rod 13 other than the reduced diameter portion 25, and the optical sensor 14 is turned off. Output a signal.

In this way, by confirming the ON signal and the OFF signal from the optical sensor 14, the table 12
It can be determined that there is one card 16 above, that there are two or more, or that there is no card 16.

According to the above-described embodiment, the flexural deformation amount W of the card 16 varies greatly depending on the number of the cards 16, and therefore the moving position of the detection rod 13 in the flexurally deformed state of the card 16 is also the card 16. Since the optical sensor 14 detects the moving position of the detection rod 13 in which the card 16 is flexibly deformed by utilizing the fact that the card 16 is flexibly deformed, even if the card itself is thin, The detection by the sensor can be easily performed. As a result, by the detection of the optical sensor, the number of the cards 16 in which the detection rod 16 is bent and deformed, for example, one or two,
Alternatively, the absence of the card 16 can be detected at low cost. The amount of change in the moving position of the detection rod 13 based on the difference in the number of sheets also changes significantly by changing the strength of the spring 24.

In the card number detecting device 11 according to this embodiment, when one card 16 is placed on the table 12, the optical sensor 14 outputs an ON signal so that one card 16 can be output. The case where the presence or absence of the card is detected is described. However, when two or more cards 16 are placed on the table 12 in an arbitrary number, the optical sensor 14 outputs an ON signal so that the number of the present cards exists. The presence or absence of the action may be detected.

Further, a plurality of pairs of optical sensors 14 are installed, and depending on which pair of optical sensors 14 output an ON signal,
It may be possible to detect how many cards 16 are present on the table 12.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention.

[0027]

As described above, the thin plate article number detecting apparatus according to the present invention can detect the number of thin plate articles at low cost.

[Brief description of drawings]

FIG. 1 is a side view showing a card number detecting device to which an embodiment of the thin plate number detecting device according to the present invention is applied, and FIG.
FIG. 1B is a view as seen from the arrow IB in FIG.

FIG. 2 shows the card of FIG. 1 (A), (A) is a plan view, and (B) is a side view.

FIG. 3A is an operation diagram showing a case where there is no card in the card number detection device of FIG. 1A,
FIG. 3B is a view on arrow IIIB in FIG.

FIG. 4A is an operation diagram showing a case where there are two cards in the card number detecting device of FIG. 1A,
4B is a view as seen from the arrow IVB in FIG.

FIG. 5 is a side view of a conventional sheet number detecting device.

[Explanation of symbols]

 11 Card Number Detecting Device 12 Table 13 Detection Rod 14 Optical Sensor 15 Opening of Table 12 16 Card 24 Spring 25 Reduced Diameter of Detection Rod W Card Deflection F Pressing Force

Claims (1)

[Claims] 1. A support member for flexibly deforming and supporting a thin plate article, a pressing member for applying a constant pressing force to the thin plate article supported by the supporting member to bring the thin plate article into a flexurally deformed state, and A device for detecting the number of thin plate articles, comprising: a detection sensor for detecting the moving position of the pressing member.