JPS6349798Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention mainly relates to an abnormality detection device in a coin sorting machine that sorts a large number of coins of different diameters and of various denominations.

(Technical background and issues to be solved by the invention) Coin sorting machines that sort large amounts of coins of various denominations according to their diameter (for example,
No. 34084), coins are sent one by one from a coin reservoir called a hopper to a sorting section using a rotating disk or the like, and in this sorting section, coins are sent to a storage section through sorting holes provided in order from small to large according to the diameter of each denomination. The number of sheets dropped into each storage section is determined based on the detection output of a photoelectric element 19 provided on the right side of each sorting hole.

On the other hand, apart from this, a sensor is installed in front of the smallest sorting hole in the sorting section to distinguish all denominations, and the diameter of the coins sent out is detected and judged, and the count for each denomination is calculated. There are also coin sorting machines that carry out sorting prior to sorting (for example, US Pat. No. 4,088,144). In any of the above sorting machines, if there is dirt attached to the coins or the reference surface of the sorting path, the coins will pass through the sorting hole of the corresponding denomination without falling during sorting, and the next coin will be transferred to the next coin. Even if something were to fall into the seed sorting hole, it could not be detected.

In addition, there are coins in which two detectors are installed on the same line substantially orthogonal to the rolling surface of the coin to discriminate between coins when the coin passes (for example, Japanese Patent Application Laid-open No. 54-92396).
Simply providing this on the upstream side of each selection hole of the coin sorting machine will not solve the above problem. Moreover, there is no mention that even if a foreign coin with a diameter between the regular coin diameter (referred to as a coin with a different diameter) is mixed in, it can be detected.

This idea was created in view of the above-mentioned problems, and it prevents sorting abnormalities due to dirt etc. adhering to the coins or the reference surface of the sorting path, and abnormalities due to the mixing of foreign coins with a diameter intermediate to the regular coin diameter. It is an object of the present invention to provide an abnormality detection device for a coin selection machine that can detect.

(Means for solving the problem) In this invention, n types of coins with different coin diameters are passed along a reference surface of a sorting path, and each coin diameter D ₁
~D _o In a coin sorting machine that sorts through a plurality of sorting holes corresponding to 1 sensor group S _1D ,
S _2D ,..., S _nD , S _(n+1)D ,..., S _oD and a position located on the same line as the first sensor group substantially orthogonal to the reference plane and far from the reference plane. A second sensor group S _1U provided at a position that does not exceed the position of the end face of the sorting hole and at a position that does not detect coins during normal passage of regular coins to be selected through the sorting hole;
S _2U ,..., S _nU , S _(n+1)U ,..., S _oU and the first sensor group S _1D , S _2D ,..., S _nD , S _(n+1)D ,..., S _oD and the second sensor group S _1U , S _2U ,..., S _nU ,
Counting means 11, 21, 22, ... for individually counting the number of times the coin is detected by S _(n+1)U , ..., S _oU ,
1≦m≦n, one sensor S _nU in the second sensor group and the first sensor one stage downstream from this
comparison means 40, 4 for comparing the number of times the coin is detected by one sensor S _(n+1)D in the sensor group;
1, . . . and gate means 42, 43, . . . for outputting the comparison result of the comparison means at the end of counting,
The above issues have been resolved.

(Function of the device) This device uses the output of the sensor located far from the reference plane of a set of sensors on the upstream side of each screening hole, and the output of the sensor on the downstream side of the screening hole, that is, upstream of the next screening hole. Abnormalities in coin sorting are detected based on the output of a sensor located close to the reference surface of a set of sensors on the side.

(Example of the invention) Figures 1 and 2 show an example of the invention, and for the purpose of simplifying the explanation, the regular diameters of coins are divided into three types: large diameter, medium diameter, and small diameter. Seed. A small-diameter coin sorting hole 2, a medium-diameter coin sorting hole 3, and a large-diameter coin sorting hole (not shown) are provided along the reference surface 1 of the sorting section, and in the feeding direction T of the coins 4 to 6. On the other hand, a pair of upper and lower sensors S _1D -S _1U , S _2D -S _2U , and S _3D -S _3U are provided in front of each sorting hole on the upstream side. Here, the lower sensors S _1D , S _2D , and S _3D are each provided close to the reference surface 1, and the upper sensor S _1U is installed close to the small diameter coin 4.
The sensor S _2U is located at a position slightly higher than the diameter of the medium-diameter coin 5 and at a position not exceeding the upper end surface of the small-diameter coin sorting hole 2. The sensor S _3U is placed at a position that does not exceed the upper end surface, and is slightly higher than the diameter of the large-diameter coin 6.
In addition, they are provided at positions that do not exceed the upper end surface of the large-diameter coin sorting hole 3. And the sensor
The number of coins detected in S _1D −S _1U , S _2D −S _2U , and S _3D is determined by the counter 11-1 as a counting means, respectively.
2, 21-22, 31, and the outputs of sensors S _1D to S _3D and sensors S _1U to _{S 3U}
The logical product of the negated outputs is passed through AND gates 13, 23, and 33 to counters 14 and 2, respectively.
It is now counted in increments of 4.34. The counted values of the counters 14, 24, and 34 are displayed on the displays 15, 25, and 35, respectively, and the counted values of the counters 12 and 21 are inputted to the comparator 40.
The counted values of the counters 22 and 31 are inputted to the comparator 41, and the comparison results of the comparators 40 and 41 as comparison means are obtained and displayed on the display devices 44 and 45, respectively, by obtaining AND gates 42 and 43 as gate means. It's becoming like that. Note that the signal CF input to the AND gates 42 and 43 is a counting end signal that is generated separately at the end of counting, and the signal CF is a counting end signal that is generated separately when counting ends.
indicates a different diameter coin such as a foreign coin having a diameter intermediate between a small diameter coin 4 and a medium diameter coin 5. Also, coins 4~
The moving surface in 7 may be a horizontal surface, a vertical surface, or an inclined surface.
The reference surface 1 may be inclined, and the coin may be moved using a belt, a roller, its own weight, or the like.

In such a configuration, if coins are sent out one by one from the hopper by a rotating disk or the like, and now a small-diameter coin 4 is moving, this small-diameter coin 4
Sensor S _1D is installed in front of the small-diameter coin sorting hole 2 (on the upstream side) and closer to the sorting section reference surface 1.
detects this and the counter 11 goes up. At this time, sensor S _1U does not detect small diameter coin 4, so
The counter 14 also goes up via the AND gate 13. The contents of the counter 14 are displayed on a display 15 for the number of small diameter coins. Thereafter, the small-diameter coin 4 is removed from the small-diameter coin sorting hole 2 and stored in a storage section (not shown). Therefore, the sensor
It is not detected by S _2D or S _3D . Next, when the medium-diameter coin 5 moves, both S _1D and S _1U are detected, so the counters 11 and 12 go up.
Counter 14 due to negative input of AND gate 13
does not rise. Therefore, this medium-diameter coin 5 is not removed by the small-diameter coin sorting hole 2 and moves further.
Then, the sensor _S2D provided in front of the medium-diameter coin sorting hole 3 (on the upstream side) and closer to the sorting section reference surface 1 detects this, and the counter 21 goes up. At this time,
Since the sensor _S2U does not detect the medium-diameter coin 5, the counter 24 also goes up, and its contents are displayed on the display 25 for the number of medium-diameter coins. Thereafter, this coin 5 is removed from the medium-diameter coin sorting hole 3 and stored in the storage section. Similarly, when the large diameter coin 6 moves, the counters 11, 12, 21, 22, 31 and 34 go up, but the counters 41 and 24 do not go up. In this way, when all the regular coins 4 to 6 are sorted normally, the number of coins detected by the sensor S _1U and the number of coins detected by the sensor S _2D match, and the comparator 40 compares the contents of the counters 12 and 21. A match signal is output from. Similarly, the comparator 41 also outputs a coincidence signal. As a result, the AND gates 42 and 43 are activated by the counting end signal CF output when the coin feeding is completed.
Even if the switch is opened, the indicators 44 and 45 are not lit.

Next, to explain the case where coins with different diameters (for example, foreign coins) 7 other than regular coins are mixed in, when the coins with different diameters 7 are moved, the sensor
Since both S _1D and S _1U are detected, counters 11 and 12 go up, but counter 14 does not go up. In other words, the state is the same as when a medium-diameter coin 5 or a large-diameter coin 6 passes. However, unlike the medium-diameter coin 5 or the large-diameter coin 6, this different-diameter coin 7 is rejected by the small-diameter coin sorting hole 2 and is not detected by the next sensor _S2D . Therefore, a difference occurs between the contents of the counter 12 and the contents of the counter 21, and the comparator 40 does not output a coincidence signal. Therefore, when the AND gates 42 and 43 are opened by the counting end signal CF at the time when all the coins have been sorted, the display 44 lights up.
Thereby, it is possible to notify that coins of different diameters have been mixed. In addition, if for some reason the small-diameter coin 4 passes through the small-diameter coin sorting hole 2 without being removed and is detected by the sensor S _2D , the counter 1
Since the contents of coins 2 and 21 are different, the display 44 that notifies the accident lights up when all the coins have been sorted. Note that if coins with different diameters between the medium-diameter coins 5 and the large-diameter coins 6 are mixed, the indicator 45 will light up.

In the above-described embodiment, a case has been described in which coins of large, medium and small diameters are sorted, but the present invention is also applicable to a wide variety of coin diameters. Further, as a sensor, a light emitting/receiving element, a proximity switch, a micro switch, etc. can be used, and the counters 14, 2
The output from the sensor may be delayed and fed to the AND gate so as to prevent erroneous counting of the number 4, etc.

On the other hand, Figure 3 shows an example of processing this idea with a microcomputer, and the sensor
Detection signals from S _1D , S _1U , ... are sent to interface 1
01 is input to the RAM 103 via the bus 102 and stored as a cumulative value.
However, the microprocessor CPU has ROM10
The necessary processing and calculations are performed according to the program stored in the RAM 103, and when all coin sorting is completed, the cumulative value in the RAM 103 is read out and compared, and the results are sent via the interface 106. It is displayed on the display device 107. With this arrangement as well, the same operation as described above can be performed.

(Effects of the invention) As described above, according to the abnormality detection device of this invention, if a coin of the corresponding denomination does not enter the sorting hole due to adhesion of dust, etc., or if a coin of a different diameter than expected is mixed in, This has the excellent effect of being able to detect an accident at the end of the sorting process and ensuring reliable sorting.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the relationship between the sensor and the coin sorting path used in this invention, and FIGS. 2 and 3 are block diagrams showing one embodiment of this invention, respectively. 1...Reference surface, 2...Small diameter coin sorting hole, 3...
Medium diameter coin sorting hole, 4 to 6...Regular coin, 7...Different diameter coin, _S1D to _S3D , _S1U to _S3U ...Sensor, 11,
12, 14, 21, 22, 24, 31, 34...
Counter, 15, 25, 35, 44, 45... Display, 40, 41... Comparator, 103... RAM
(read/write memory), 104... microprocessor (CPU), 105... ROM (read only memory).

Claims (1)

[Scope of utility model registration request] In a coin sorting machine that passes n types of coins with different diameters along a reference surface of a sorting path and sorts them through a plurality of sorting holes corresponding to each coin diameter _D1 to _D0 , upstream of each of the sorting holes. A first sensor group S _1D , S _2D , ..., S _nD , for detecting passage of a coin, which is provided on the side and close to the reference surface of the sorting path.
S _(n+1)D , ..., S _oD and the position of the end face of the screening hole that is on the same line as the first sensor group that is substantially orthogonal to the reference plane and is far from the reference plane. A second sensor group S _1U , S _2U , ..., S _nU , which is installed at a position where the coin does not pass through the selection hole and does not detect the coin during normal passage of the regular coin to be selected through the sorting hole.
S _(n+1)U , ..., S _oU and the first sensor group S _1D ,
S _2D ,..., S _nD , S _(n+1)D ,..., S _oD and the second sensor group S _1U , S _2U ,..., S _nU , S _(n+1)U ,..., S _oU counting means 11, 21, ₂₂ , . one of the first sensor group
Comparing means 40, 41, . . . for comparing the number of times the coin is detected by the two sensors S _(n+1)D , and gate means 42, 43, . . . for outputting the comparison result of the comparing means when counting is completed. An abnormality detection device for a coin sorting machine, characterized by: