Abstract: The banknote counting machine is an electromechanical-integrated device that automatically counts the number of banknotes. Due to the large scale of cash flow,
The cash processing work at the bank teller counter is heavy, and the money counter has become an indispensable equipment. The banknote counting machine is mainly composed of a sliding banknote, a banknote feeding tongue, a resistance rubber, a banknote drop plate, an adjustment screw, and a banknote twisting glue.
circle, etc. The following are the parts of the structure of the banknote counting machine and the structure principle of the banknote counting machine organized by the editor. Let's learn it together.
What are the parts of the structure of the money counter?
The banknote counting machine is composed of twisting, issuing, receiving, rack, motor, transformer, electronic circuit and other parts.
twisting part
It is mainly composed of banknote sliding plate, banknote feeding tongue, resistance rubber, banknote dropping plate, adjusting screw, banknote twisting rubber ring, etc. Twisting out the banknotes to be counted one by one is the premise to ensure accurate counting. The machine adopts the continuous grading of face-out banknotes: the twisting rubber ring twists away the banknotes on the surface - the banknotes under the banknotes are stuck by the resistance rubber, so that the banknotes on the surface are separated from the banknotes below, and the separation is realized. This process is repeated until the last banknote is twisted. Due to the troublesome replacement, the wear and tear of the twisting rubber ring and the resistance rubber has always been two major problems that plague people. To solve this problem, it is nothing more than:
1. Improve the service life;
2. Easy to replace. For the money-twisting rubber ring, we can increase the outer diameter and open a groove in the middle of the outer circle to improve the wear resistance of the money-twisting rubber ring.
The (direction) section is changed to a zigzag shape, so that the contact surface of the tooth surface of the rubber ring with respect to the banknote is enlarged, and the adhesion of the tooth surface of the rubber ring to the banknote is improved. For the attached eraser, the simpler method is to use
With the resistance rubber quick-change structure, the rear end of the banknote slide plate can be pressed down by hand, and the resistance rubber can be easily taken out for replacement.
banknote part
It is mainly composed of a cash-out rubber wheel and a cash-out counter-rotating wheel. Its function is to effectively separate the first-arrived banknotes from the following banknotes at twice the linear speed of the banknote-twisting aprons, and send them to the counter and the detection sensor for counting and counterfeiting. The banknotes leave the twisting rubber ring and enter the note dispensing rubber ring. Because the lifting distance (60mm) between the twisting shaft and the banknote output shaft of the TD series banknote counting machine is less than the width of the banknotes to be counted (maximum 77mm), the remaining width of the banknotes will cause the relative friction between the twisting rubber ring and the banknotes, reducing the twisting and twisting. The service life of the banknote rubber ring. Our 3EC series banknote counting machine adopts the method of widening the distance between the banknote output and the banknote twisting axis (the distance between the banknote output axis and the banknote twisting axis is 80mm) to avoid the occurrence of this friction phenomenon. Due to the widening of the distance between the banknote twisting shaft and the banknote output shaft, in order to ensure the smooth movement of banknotes from the banknote twisting wheel to the banknote outputting wheel, a pair of passing wheels are added. No recognition result The linear speed of the outer edge of the passing wheel is equal to the banknote twisting glue The linear speed of the outer edge of the circle, the linear speed of the outer edge of the money-out rubber circle is twice that of the outer line of the twisting rubber circle. When the outer edge of the bill-feeding rubber ring is twisted to the banknote, the bill will move at twice the original speed, so that the wear of the bill-twisting rubber ring will be transferred to the passing wheel, and the passing wheel is made of wear-resistant material. The service life of the banknote rubber ring has been increased several times. Although adding a pair of passing wheels can improve the service life of the money-twisting rubber ring, the accompanying problems are increased cost, complicated structure and inconvenient maintenance.
If an overrunning clutch (commonly known as one-way bearing) is installed on the bill-twisting shaft without adding a pair of passing wheels, the same effect can be achieved. The principle is as follows: the one-way bearing is installed in the bill-twisting transmission wheel, It can be rotated counterclockwise relative to the twisting shaft. When the banknote is twisted, the twisting drive wheel rotates clockwise, and the one-way bearing does not rotate, which plays the role of transmitting power. , Due to the function of the one-way bearing, the outer edge of the banknote twisting aprons moves at the same speed as the banknotes, and there is no relative sliding between the banknotes and the banknote twisting aprons, thus prolonging the service life of the banknote twisting aprons.
receiving part
It is mainly composed of money receiving claw wheel, banknote supporting plate, banknote blocking plate and so on.
After checking, the banknotes are clipped into different claws of the banknote receiving claw wheel respectively, and the banknotes are removed by the banknote removal board and stacked neatly. The phenomenon of flying banknotes is relatively common in banknote counting machines. To solve this problem, three aspects must be paid attention to: - the central position of the impeller for receiving the banknotes, the second is the shape of the leaf claw, and the third is the speed of the impeller.
( 1 ) Determination of the central position of the impeller for receiving the banknote: the center of the impeller for receiving the banknote should be as close as possible to the banknote outlet shaft. When the banknote leaves the banknote outlet rubber ring, it must be stuck into the deep part of the leaf claw as much as possible, so as to ensure that the banknote will not be stuck because Shallow and flying notes.
(2) The shape of the leaf claw: the curve should make the banknote have a bending deformation after insertion, and the greater the deformation of the banknote, the more difficult it is to come out.
(3) Impeller speed: The faster the impeller rotates, the easier it is to fly the banknotes, but too slow the banknotes will hit the bottom of the leaf claw. The speed of the impeller is related to the counting speed and the number of claws. Transmission part The transmission part can be driven by a single motor or a double motor, and the motor transmits power to each transmission shaft through a transmission belt and a transmission wheel. It is easy to realize the preset number function with dual motor drive. The motor can be AC or DC motor. Due to the heavy weight of the motor and the transformer, if a DC motor is used with a switching power supply, the weight of the whole machine can be greatly reduced.
Rack Components
Practice has proved that the effect of punching edge plate is better. The advantage of adopting this design is that the parts with relatively high precision in the left and right plates of the frame can use the same mold
One-time processing is completed, which improves the assembly accuracy of the rack, reduces the cost, and provides the required positioning accuracy for the effective identification of the moving banknotes.
Electronic circuit part
The main control part, sensor parts, driving light components, power board, etc. form a single-chip-controlled system.
The digital signal is introduced into the main controller. The signals received by each sensor in normal banknotes are statistically sampled, identified, and stored as the basis for detection.
When the banknote detector counts the banknotes, compare and judge the signal parameters received at the interface of each channel with the signal parameters originally registered. If there is a significant difference, but immediately
Send the alarm signal and stop the motor, and send out the corresponding signal prompt at the same time.