JP2845969B2 - Paper handling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a member which is required to keep its surface clean at all times, for example, an optical sensor of a detecting device and a head of a recording and reproducing device such as a head. The present invention relates to a paper sheet handling apparatus in which a large number of optical detection devices having a cleaning device are provided.

[Conventional technology]

Conventionally, when the surface of a member, such as an optical sensor or a roller, of a detection device that requires prevention of contamination is soiled, a person directly cleans the surface.

As an apparatus for cleaning an objective lens of an optical head, for example, there is an apparatus disclosed in Japanese Patent Application Laid-Open No. 62-24449.

[Problems to be solved by the invention]

Conventionally, in order to clean the dirt on the optical sensor and the like, it is necessary to disassemble the device having the dirt inside, and there is a problem that the cleaning work is excessively troublesome. In particular, in an automatic cash handling apparatus, a large number of optical sensors are used for switching the transport path of bills, for detecting the transport state of bills, for detecting the number of transported bills, and the like. However, there is a major problem in the cleaning work by disassembly due to its structure.

In the above-described structure of the objective lens cleaning device, the brush provided at the end of the arm strokes the surface of the objective lens of the optical head only when the disk is loaded into the device and when the disk is unloaded from the device. It has become. For this reason, cleaning should be carried in the disk,
Only one movement at the time of unloading, sufficient cleaning cannot be expected, and cleaning other than when the apparatus is operating cannot be performed. In addition, when there are a large number of members to be cleaned in the apparatus, the structure becomes complicated and operability is problematic.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper sheet handling apparatus provided with an optical detection device provided with a member surface cleaning device capable of automatically cleaning the surface of a member such as an optical sensor which is required to prevent contamination of the surface. To provide.

[Means for solving the problem]

The paper sheet handling apparatus according to the present invention includes a transport path for transporting the paper sheets, a storage unit for storing the paper sheets from the transport path, and a paper path for separating the paper sheets in the storage unit. A sheet handling apparatus, comprising: a separating unit that sends out the sheet to the cleaning unit; and a detecting unit that detects the sheet on the transport path, and a cleaning device that cleans a detection surface of the detecting unit is provided. The apparatus includes a cleaning member facing the detection surface of the detection means, an arm made of a shape memory alloy for supporting the cleaning member, and shape changing means for changing the shape of the arm.

Alternatively, it is assumed that the detecting means is held by a piezoelectric vibrator, and a power supply for exciting the piezoelectric vibrator is connected to the piezoelectric vibrator.

Alternatively, the cleaning device includes a cleaning member facing the detection surface of the detection unit, and a resonance arm supporting the cleaning member on a distal end side and having one end side held by a piezoelectric vibrator.

[Action]

For example, in optical sensors such as light-emitting and light-receiving elements,
Undesired substances such as dust adhered to the surface corresponding to the optical path and the predetermined operation was impossible, and the unnecessary substances were removed by driving the cleaning device according to the present invention, so that the optical device was optically cleaned. The original function of the sensor is easily restored, and the function of the entire sheet handling apparatus such as an automatic cash handling apparatus having a large number of optical sensors is easily restored.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. This embodiment is an example in which a first shape and a second shape are stored in a shape memory alloy.

The arm 1 is made of a shape memory alloy. When the temperature of the arm 1 becomes equal to or higher than the transformation point, as shown in FIG.
Is stored. On the other hand, when the temperature is below the transformation point, as shown in FIG.
The second shape is stored such that the brush 3 and the arm 1 do not block the optical path 8. One end of the arm 1 is fixed to the sensor support base 6 with screws, and the other end of the arm 1 is fixed to a plate 2 to which a nylon brush 3 is adhered with an adhesive. A coil 5 is wound around the arm 1 as a shape changing means, so that power can be input to the coil 5 from a power supply input circuit 51 via a conducting wire 50. The power supply input circuit 51 operates according to an instruction from the self-cleaning drive input means 52 manually.

Further, the sensor support 6 described above is fixed to the support base 7 with screws. The optical sensor 4 is driven by the sensor drive circuit 40 and performs a light emitting operation as needed. Examples of the shape memory alloy for forming the arm 1 include Ti-Ni-based and Cu-based alloys, but are not limited thereto. For example, an organic-based shape memory material can be used.

With the above configuration, the following operation can be performed. That is, if a self-cleaning drive input is manually performed by the self-cleaning drive input means 52 during a time period when the optical sensor 4 is not functioning, a current to the coil 5 flows through the power supply input circuit 51 and the arm 1 made of the shape memory alloy is moved. As shown in FIG. 1, the brush 3 is heated to a temperature equal to or higher than the transformation point and is deformed into a first shape stored in advance. This deformation causes the brush 3 to come into contact with the surface of the optical sensor. Unnecessary items such as garbage adhering to the surface are physically removed.

On the other hand, when the self-cleaning drive input is turned off, the coil 5
Current is cut off, the temperature of the arm 1 falls below the transformation point, the brush 3 and other members are restored to the second shape shown in FIG. 2 and cannot block the optical path 8 of the optical sensor 4. evacuate.

The following effects are produced by the above operation. That is, the ON / OFF operation of the self-cleaning drive input causes the brush 3 to remove unnecessary substances adhering to the surface of the optical sensor 4, so that the function of the optical sensor 4 does not decrease and the reliability of the device provided with the optical sensor 4 is improved. The property and the service life can be improved. Also,
Unnecessary matter of the optical sensor 4 can be removed by a mechanism having a compact configuration and can be performed by remote control.

FIGS. 3 and 4 show an example in which the cleaning device is applied for cleaning the magnetic head of a magnetic recording / reproducing device.

A magnetic head 9 of the magnetic recording / reproducing apparatus is fixed to a rotary cylinder 10 and performs recording or reproduction on the magnetic tape 11 while being in contact with the magnetic tape 11. Magnetic tape
Numeral 11 travels with the non-rotating fixed cylinder 12 and the aforementioned rotary cylinder 10 as guides. The cleaning device includes a bristle brush 3, an arm 1 made of a shape memory alloy for fixing the bristle brush 3 and controlling the position of the bristle brush 3, a support base 7 fixing one end of the arm 1, A heating power supply (not shown) for heating the arm 1 to change the shape of the arm 1 is provided.

When the heating power is not input, the cleaning device is not in contact with the magnetic head 9 and is at a position where it does not hinder the running of the magnetic tape 11. When the heating power is turned on, the arm 1 is deformed. During this deformation process, the bristle brush 3 moves to a position where it comes into light contact with the surface of the magnetic head 9.

With the above configuration, the following operations can be performed. That is,
If the power of the arm 1 is turned on when the magnetic tape 11 is not storing and reproducing data, the arm 1 is warmed and its shape changes, and the bristle brush 3 moves so as to contact the surface of the magnetic head 9. With this operation, dirt such as dust and oil adhered to the surface of the magnetic head 9 can be removed. It should be noted that the power on / off operation is repeated as necessary. As a result, magnetic storage and reproduction can be performed on the magnetic tape 11 by the magnetic head 9 with a good S / N ratio, and information can be exchanged by magnetic storage and reproduction without error.

FIG. 5 shows an example of the configuration of a detection device with a cleaning device. The optical sensor 4 having a light receiving and a light emitting function is supported by a support base 7, and the support base 7 is fixed to the piezoelectric vibrator 13 by an adhesive. The piezoelectric vibrating body 13 is arranged so as to vibrate in the vertical direction in the figure by applying a piezoelectric force. The optical sensor 4 is a sensor that receives the light whose emitted light is reflected and returned to the object. That is, if there is an object, the output signal of the optical sensor 4 rises, and if there is another non-reflective object between the object and the optical sensor 4, light cannot be received and the output signal of the optical sensor 4 will not be excited. .

The following effects are produced by the above configuration and operation. That is, when dirt such as dust adheres to the surface of the optical sensor 4, the amount of light emitted or received from the optical sensor 4 is greatly reduced, and no other object is interposed between the optical sensor 4 and the target. Sometimes the judgment is wrong because the output signal of the optical sensor 4 comes out as if another object intervenes, but in such a case, the optical sensor 4 is vibrated by the piezoelectric vibrator 13, The function of the optical sensor 4 can be kept normal by dropping dirt attached to the surface of the optical sensor 4.

FIG. 6 shows an example of a detection device provided with a cleaning device. The piezoelectric vibrator 13 has one end fixed to the support base 7 and the other end resonating at the vibration frequency of the piezoelectric vibrator 13. The designed resonance arm 14 is attached, and the bristle brush 3 is attached to the tip of the resonance arm 14. The bristle brush 3 contacts the surface of the optical sensor 4 only when the resonance arm 14 resonates. When the resonance arm 14 does not resonate, the bristle brush 3 or the resonance arm is placed on the optical path of the optical sensor 4. 14 is located in a non-existent position.

With the above configuration, when the power of the piezoelectric vibrating body 13 is turned on, the piezoelectric vibrating body 13 vibrates, and is vibrated by the piezoelectric vibrating body 13 so that the resonance arm 14 resonates and vibrates greatly.
Can come into contact with the surface of the optical sensor 4 to forcibly remove dirt and the like attached to the surface of the optical sensor 4. When the power of the piezoelectric vibrator 13 is turned off, the resonance arm
The brush 14 and the bristle brush 3 can rest at a position not on the optical path of the optical sensor 4.

As a result, the contamination of the optical sensor 4 can be prevented.
As described above, the optical sensor 4 can detect the passage timing or the presence / absence of the intended inclusion based on the sensor output signal generated by the light emission and light reception as intended.

FIG. 7 shows an example of a cleaning device for preventing dust or the like from adhering to the surface of the optical sensor 4. The air source 15 supplies compressed air, and the ventilation path 16
Is configured to guide the air flow supplied from the air source 15 to the optical sensor 4 in the vicinity of the surface of the optical sensor 4.

With the above configuration, by introducing an airflow to the optical sensor 4, it becomes possible to remove dirt such as dust adhering to the surface of the optical sensor 4, and as described above, a malfunction caused by the dirt on the optical sensor 4 is caused. Can be prevented.

8 and 9 show another example of the present invention.

This embodiment is an example in which one shape is stored in a shape memory alloy, and shows an example of application to dirt removal on the surface of a rubber roller.

That is, the rubber roller 101 is configured to be rotationally driven by a driving unit (not shown). A grindstone 102 as a cleaning member is fixed to a drive element 103 made of a shape memory alloy. The drive element 103 has been subjected to a heat treatment in advance so as to have a straightly elongated shape as shown in FIG. 8 when the temperature has reached a predetermined value or higher. The heater 104 is wound so as to cover the outer periphery of the driving element 103. Heater 1
04 is also connected to the power input circuit 51.

The spring 104 is attached to one end of the grindstone 102, and has a characteristic that when the temperature of the drive element 103 is lower than a predetermined value, the spring 104 is bent as shown in FIG. When the temperature of the drive element 103 becomes higher than a predetermined temperature, the drive element 103 has such a characteristic that the shape of the drive element can be deformed as shown in FIG.

 With the above configuration, the following operation can be performed.

When the surface of the rubber roller 101 is contaminated with ink, paper dust, or the like, or the friction coefficient between the rubber roller and the mating contact member is reduced due to deterioration of the rubber roller, when the power of the power input circuit 51 is input, the heater 104 drives the driving element 103. Rises to a temperature lower than the transformation point temperature of the driving element 103. As a result, the shape of the drive element 103 becomes a previously stored shape as shown in FIG. 8, and the grindstone 102 attached to the tip of the drive element 103 is pressed against the rubber roller 101. When the rubber roller 101 is rotated in this state, the surface of the rubber roller 101 can be cleaned, whereby the coefficient of friction of the surface of the rubber roller 101 can be restored to the original state.

As described above, the function of transporting an object by traction on the surface of the rubber roller 101 can be stably provided.

FIG. 10 is a configuration diagram showing an example in which a cleaning device according to the present invention is provided in an automatic bill handling device such as a handling device. In this embodiment, two automatic handling devices 17 and 18 are connected on the back side thereof by bill receiving / receiving means 19.
In the figure, reference numeral 20 denotes a bill separating means comprising a feeding roller 201 such as a rubber roller and a friction member 202 such as a friction roller, 21 denotes a bill accumulating means, 22 denotes a bill conveying means such as a belt, and 23 denotes a conveying means. Reference numeral 22 denotes a gate portion provided at a branch portion, reference numerals 24 and 25 denote switching gate portions, reference numeral 26 denotes a window hole, reference numerals 27 and 28 denote transport paths, reference numerals 29 and 30 denote guide portions, and reference numerals 31 and 32 denote rollers.

In such an automatic cash handling apparatus, for example, when paying cash, the banknotes 37 stored in the storage section 38 are used.
Are separated one by one by the separation means 20 and
Sent to Further, for example, when depositing cash, the bills conveyed by the conveying means 22 are stacked one by one by the stacking means 21 and stored in the storage section 38. In such an operation, the switching operation is performed so that the switching gates 23, 24, 25, etc., constitute a transport system determined by each operation. The guides 29, 30 are provided with sheet number detection sensors 33, 34, 35, 36 for detecting the number of bills passing therethrough. And, for example, the roller constituting the aforementioned separating means 20
For example, FIGS. 1, 5 and 6 show the rollers 201 and 202 and the rollers constituting the conveyance path and the above-described number detection sensors 33, 34, 35 and 36.
A cleaning device (not shown) for cleaning the member surface is provided as shown in FIGS. These cleaning devices, when the automatic cash handling device is not used,
It operates to remove dirt from the surfaces of the rollers and the sensors 33, 34, 35, and 36 to clean the surfaces. Each roller and each sensor 33,3
The cleaning devices 4, 35 and 36 may be operated simultaneously by one operating means or may be operated separately. With this configuration, since each roller can always maintain a pure friction coefficient, it is possible to prevent bills from being transported incorrectly. In addition, the sensors 33, 34, 35, and 36 can always accurately count the number of bills conveyed in the conveyance system. As a result, it is possible to greatly reduce the occurrence of malfunctions and stoppages of the handling device.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, the dirt attached to the surface of an optical sensor, a roller, etc. can be easily cleaned, and the function fall by the dirt of a detection apparatus can be easily prevented.

Further, according to the automatic sheet handling apparatus of the present invention, by providing the above-mentioned cleaning device in the optical sensor, it is possible to easily realize the function-reducing stop of the entire automatic handling apparatus.

[Brief description of the drawings]

1 and 2 are perspective views showing an embodiment of a cleaning device according to the present invention, and FIGS. 3 and 4 are perspective views showing an embodiment in which a cleaning device according to the present invention is provided in a magnetic recording / reproducing apparatus. , FIG. 5, FIG. 6, and FIG. 7 are perspective views showing different embodiments of the cleaning device, and FIG.
FIG. 8 is a view for explaining another example of the cleaning device according to the present invention. FIG. 8 is a diagram showing a state when power is turned on, FIG. 9 is a diagram showing a state when power is turned off, and FIG. It is a principal part block diagram of an automatic handling apparatus. 1 ... arm, 3 ... brush, 4 ... optical sensor, 9 ...
... magnetic head, 13 ... piezoelectric vibrator, 14 ... resonant arm,
15 ... air source, 16 ... ventilation path, 17, 18 ... automatic handling device, 19 ... bill transfer means, 33-36 ... optical sensor.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-167142 (JP, A) JP-A-59-154626 (JP, A) JP-A-58-158656 (JP, A) 92248 (JP, U) Japanese Utility Model Showa 57-68546 (JP, U) Japanese Utility Model Showa 60-163349 (JP, U) Japanese Utility Model Showa 56-9525 (JP, U) (58) Field surveyed (Int. ⁶ , DB name) B08B 1/00-1/04 G11B 5/41 G11B 7/12 G07D 5/00 G07D 7/00 G07D 9/00 G01N 21/85 B65H 7/02 B65H 7/14

Claims (3)

(57) [Claims] 1. A transport path for transporting paper sheets, a storage section for storing the paper sheets from the transport path, and a separating means for separating the paper sheets in the storage section and sending them to the transport path. A detecting means for detecting a sheet in the transport path, and a sheet handling apparatus provided with a cleaning device for cleaning a detection surface of the detecting means. A paper sheet handling apparatus comprising: a cleaning member facing a detection surface; an arm made of a shape memory alloy for supporting the cleaning member; and shape changing means for changing the shape of the arm. 2. A transport path for transporting paper sheets, a storage section for storing the paper sheets from the transport path, and a separating means for separating the paper sheets in the storage section and sending them to the transport path. Detecting means for detecting a sheet on the transport path, wherein the sheet handling apparatus is provided with a cleaning device for cleaning a detection surface of the detecting means, wherein the detecting means is held by a piezoelectric vibrator. A sheet handling apparatus in which a piezoelectric vibrating body power supply is connected to the piezoelectric vibrating body. A transport path for transporting the paper sheets, a storage section for storing the paper sheets from the transport path, and a separating means for separating the paper sheets in the storage section and sending them to the transport path. A detecting means for detecting a sheet in the transport path, and a sheet handling apparatus provided with a cleaning device for cleaning a detection surface of the detecting means. A paper sheet handling apparatus comprising: a cleaning member facing a detection surface; and a resonance arm supporting the cleaning member on a front end side and having one end side held by a piezoelectric vibrator.