JPS6227262A - Double feed detecting device of card or the like - Google Patents

Abstract

PURPOSE:To detect the double feed of cards or the like even if fats and oils are stuck to cards by providing a pinch roller moving in the reverse direction by sensing the thickness of cards. CONSTITUTION:If a card 2 is taken between a drive roller 3 and a pinch roller 4, a shield plate 10 is somewhat rotated centering a pin 9, but the tip portion of the shield plate 10 is still located below detection slits 12, 12. If overlapped cards 2 are taken between the drive roller 3 and the pinch roller 4, the pinch roller 4 senses the thickness of the overlapped cards and is moved upward by about the thickness of a card 2. Thereby, a lever 7 coupled with a shaft 5 and the shield plate 10 provided at the tip of the lever 7 are rotated by the predetermined angle centering the pin 9, and the tip portion of the shield plate 10 shields light rays between the detection slits 12, 12. Accordingly, the switch 11 of a photosensor is turned on, and the double feed of cards is detected.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention is useful for frequent use, such as when two or more cards that have been damaged due to oil, fat, static electricity, etc. are taken into a card reader, etc. The present invention relates to a device for detecting the falling of cards, etc., for detecting the rolled cards from among the cards.

[Conventional technology] Conventionally, there are many objects that move within a device. Examples of devices that detect overlapping cards, etc. from i cards, etc. include those that shine light on cards, etc. and detect overlapping feeding of cards, etc. based on the transparency of the light, and devices that have a lever inside the device. There are devices in which a lever sensitive to the thickness of the card turns on a microswitch to detect overlapping feeding of cards, etc.

[Problems to be Solved by the Invention] However, such conventional overlapping feed detection devices for cards, etc., which detect by light transmittance, often detect oils and fats attached to the cards, etc. If there is dust attached to the card due to static electricity or the like, it is difficult to detect whether the card is being moved or not, and there are also problems in that the transmittance of light depends on the paper quality.

Next, in a lever-based card stack detection device, delicate position adjustment of the lever is required, which not only makes this adjustment difficult, but also increases costs as a separate adjustment device is provided. There is a problem.

[Object of the Invention] An object of the present invention is to eliminate the above-mentioned conventional problems, and to detect the return of a card, etc. even if the card, etc. is covered with oil, fat, dust, etc. It is an object of the present invention to provide an overlapping feed detection device for cards, etc., which is independent of paper quality, easy to install and adjust, and is inexpensive.

[Means for solving the problem] The L stage of this invention to achieve the first objective is as follows:
It is biased and arranged in the direction of the feeder of the card feeder, and moves in the opposite direction in response to the first inch of the card, etc. taken in between the feeder and the feeder of the +li recording feeder. 1) The detector includes a pinch roller, a rotating member engaged with the pinch roller or its shaft, and a detector; There is provided an overlapping feeding detection device for cards, etc., which detects overlapping feeding of cards, etc. by rotating the card.

[Function] The overlapping feed detection device for cards, etc. configured in this way has two functions.
- Every time an overlapping card, etc. is taken in between the feeder of the feeding device and the pinch roller, the pinch roller moves in the opposite direction to the feeder in response to the thickness of the card, etc., and the pinch roller Alternatively, a rotating member engaged with the shaft rotates by a predetermined angle. Then, due to the rotation of the rotating member, the detector detects overlapping feeding of cards and the like.

[Embodiment Code] An embodiment of the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 5 show a smaller embodiment of the overlapping feed detection device for cards, etc. according to the present invention.

FIG. 1 shows a card non-feed detection device 1 incorporated in a card reader or the like for detecting card non-feed.

As shown in the figure, the card overlapping feed detection device 1 includes a driving roller 3 serving as a feeding device that sends the card 2 in the direction of the caustic line a.
Equipped with And, in 1.1 part of this drive roller 3,
A pinch roller 4 is arranged.

This pinch roller 4 is attached to a temporary spring 6 as shown in FIG.
The shaft 5, which is fixed to the position, is suspended. The pinch roller 4 is urged by the leaf spring 6 so as to come into sliding contact with the feed roller 3.

Now, the card overlapping feed detection device 1 includes a lever 7 as a rotating member.

This lever 7 is formed to have a predetermined length, and its end is pivotally connected to the bracket 8 with a pin 9. and,
A shielding plate 10 of a predetermined length is provided at the other end. The width of the shielding plate 9 is smaller than the width of the lever 7 by tl,'j<, and is arranged on the extension line 1- of the lever 7 in the longitudinal direction.

Further, a portion of the lever 7 on the bracket 8 side is engaged with the shaft 5 of the pinch roller 4, and thus the lever 7 is held at a predetermined position.

Next, the card overlapping feed detection device 1 includes an optical sensor.

The switch 11 of this optical sensor is fixed to the bracket 13 in such a way that its detection slit 12.12 is located toward the tip of the shielding plate 9 held in a predetermined position. (See Figure 3).

The tip of the shielding plate 10 can be moved to one side by rotating the lever 7 at a predetermined angle or more than a predetermined angle, and can block light between the detection sleeves 12 and 12. .

The card refeed detection device 1 configured as described above first includes a drive roller 3, a pinch roller 4. ! : Until the card 2 is taken in between detection sleeve)
12. Located below 12.

Next, when one card 2 is taken in between the drive roller 3 and the pinch roller 4, the pinch roller 4 responds to the j7 of the card 2 and bends the card by approximately the thickness of one card 2. 1・
As a result, the lever 7 engaged with the shaft 5 and the shielding plate 10 provided at the tip of the lever 7 move toward the pin 9.
However, the tip of the shielding plate 10 is still connected to the detection slit 12.1 as shown in FIG. 4.
Located on the do side of 2.

Now, when a loose card 2 is taken in between the driving roller 3 and the pinch roller 4, the pinch roller 4 responds to the thickness of the stacked cards 2 and reduces the thickness of the card 2. This moves the lever 7 engaged with the shaft 5 and the Mg root plate 10 provided at the tip of the lever 7 at a predetermined angle or a predetermined angle amount -
1- rotation, the tip portion of the shielding plate 10 shields the light between the detection slits 12, 12, as shown in FIG.

As a result, the switch 11 of the optical sensor is turned on, and the optical sensor detects the overlapping feeding of the cards 2.

In addition, the lever 7 and the shielding plate 1 provided at the tip of the lever 7
0 is formed to a predetermined length, and the part of the lever 7 on the bracket 8 side is engaged with the shaft 5 of the pinch roller 4. Therefore, the movement of the pinch roller 4 is amplified by the lever 7 and the shielding plate 10. As a result, the tip portion of the shielding plate 10 is amplified and rotated.

In the embodiment, the shielding plate 10 is provided at the tip of the lever 7, or the shielding plate 10 may be formed integrally with the lever 7.

Further, the feeding device is not limited to rollers, but may be a belt conveyor or the like.

The object to be detected for overlapping feeding is not limited to cards, but may also be large plate-shaped objects.

Further, the detector is not limited to an optical sensor, but a micro switch or the like may be used as long as the switch is driven by the rotation of a rotating member.

[Effects of the Invention] As is clear from the explanation in Part 1-, the overlapping feeding detection device for cards, etc. according to the present invention is biased in the feeding direction of the feeding device for feeding the cards, etc. A pinch roller that moves in the opposite direction in response to the thickness of a card, etc. taken in between the feeder and the feeder, a rotating member engaged with the pinch roller or its shaft, and a detector. The detector detects overlapping feeding of cards, etc. when the rotating material rotates at a predetermined angle or by a predetermined angle, so it is possible to detect whether oil, fat, dust, etc. are attached to the cards, etc. It can also detect overlapping feeding of cards, etc., is independent of paper quality, is easy to install and adjust, and is inexpensive.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG.
The figure is the bottom view of Figure 1, Figure 3 is an explanatory diagram showing the position of the tip of the city shielding plate where the card is taken in, and Figure 4 is the top view when one card is taken in. FIG. 5 is an explanatory diagram showing the position of the leading end of the shielding plate. FIG. 5 is an explanatory diagram showing the position of the leading end of the shielding plate when a dried card is taken in. ■...Card overlapping feed detection 111 device, 2-...
Card, 4...pinch roller, 5...shaft, 6...plate spring, 7...rotating member, 10...
・Shielding plate, 11... Optical sensor switch, 12.
...detection pickpocket.

Claims (2)

[Claims] (1) It is biased toward the feeding surface of a feeding device that feeds cards, etc., and moves in the opposite direction in response to the thickness of the card, etc. taken in between it and the feeding surface of the feeding device. The detector includes a pinch roller, a rotating member engaged with the pinch roller or its shaft, and a detector, and the detector detects a card or the like when the rotating member rotates by a predetermined angle or more than a predetermined angle. A double feed detection device for cards, etc., characterized by detecting double feed. (2) The detector is an optical sensor, and the rotating member amplifies the movement of the pinch roller, and the tip portion thereof blocks the light from the optical sensor switch.
Overlapping feed detection device for cards, etc. as described in Section 1.