A waste ticket rejection control method

Abstract

The application relates to a waste bill rejection control method applied to a waste bill rejection system, wherein the waste bill rejection system comprises a waste bill suction device, a waste bill bin and an electrical control system; the waste bill suction device comprises a sliding table, a suction disc and a suction nozzle; the waste bill rejection control method comprises the following steps: placing a stack of banknotes containing waste bills to be rejected on the sliding table; the electrical control system controls the suction disc to rotate and count the banknotes to move to the position of the waste bills to be rejected; the suction disc separates the waste bills to be rejected from the banknotes; the suction nozzle sucks the separated waste bills to be rejected and puts the waste bills to be rejected into the waste bill bin. The application can improve the efficiency and reliability of the waste bill rejection and reduce the cost of the waste bill rejection.

Description

Technical Field

[0001] This application relates to the field of banknote printing technology, and in particular to a method for controlling the rejection of invalid banknotes. Background Technology

[0002] During the banknote printing process, errors such as misprints and incorrect serial numbers frequently occur, preventing the issuance of consecutively numbered banknotes and potentially resulting in banknotes with printing defects. To achieve consecutive issuance and avoid printing defects, banknotes with misprints, incorrect serial numbers, or printing defects must be removed during the printing process. Currently, the removal of defective banknotes in banknote printing plants is usually done manually. However, manual removal is not only inefficient and wasteful of manpower and resources, but also causes visual and psychological fatigue when removing large quantities of defective banknotes, making errors highly likely.

[0003] Therefore, the inventors have provided a method for controlling the rejection of invalid tickets. Summary of the Invention

[0004] (1) Technical problems to be solved

[0005] This application provides a method for controlling the rejection of invalid tickets. The technical problem to be solved is that the current method of manually rejecting invalid tickets is inefficient, costly, and prone to errors.

[0006] (2) Technical solution

[0007] This application provides a method for controlling the rejection of invalid tickets, which is applied to an invalid ticket rejection system. The invalid ticket rejection system includes an invalid ticket absorbing device, an invalid ticket bin, and an electrical control system. The invalid ticket absorbing device includes a slide table, a suction cup, and a suction nozzle.

[0008] The method for controlling the rejection of invalid tickets includes:

[0009] A stack of banknotes containing the invalid bills to be rejected is placed on the slide.

[0010] The electrical control system controls the suction cup to rotate and count banknotes in order to move to the position of the invalid banknotes to be rejected.

[0011] The suction cup separates the rejected bills from the banknotes;

[0012] The suction nozzle picks up the separated waste tickets and puts them into the waste ticket bin.

[0013] Furthermore, the waste ticket collection device also includes a left baffle and a left baffle motor, a right baffle and a right baffle motor;

[0014] After placing a stack of banknotes containing rejected bills onto the slide, the process further includes:

[0015] The left baffle motor drives the left baffle to clamp one side of the banknote, and the right baffle motor drives the right baffle to clamp the other side of the banknote.

[0016] Furthermore, the electrical control system includes a PLC central control system;

[0017] The electrical control system controls the suction cup to move to the position of the rejected banknotes by rotating and counting them, including:

[0018] The PLC central control system controls the suction cup to rotate and count banknotes according to the preset invalid banknote information, so as to move to the position of the invalid banknote to be rejected.

[0019] Furthermore, after the electrical control system controls the suction cup to move to the position of the rejected banknotes by rotating to count the banknotes, it also includes:

[0020] When the suction cup moves to the position of the waste ticket to be rejected, the left baffle motor drives the left baffle to tilt away from the right baffle.

[0021] Furthermore, the electrical control system also includes an OCR image recognition and processing system;

[0022] When the suction cup moves to the position of the rejected ticket to be removed, after the left baffle motor drives the left baffle to tilt away from the right baffle, the method further includes:

[0023] The OCR image recognition and processing system captures the image of the invalid ticket to be rejected and identifies the information of the invalid ticket to be rejected, and sends the information of the invalid ticket to be rejected to the PLC central control system.

[0024] Furthermore, after the OCR image recognition and processing system captures the image of the invalid ticket to be rejected and identifies the information of the invalid ticket to be rejected, and sends the information of the invalid ticket to be rejected to the PLC central control system, it also includes:

[0025] The PLC central control system determines whether the information of the invalid tickets to be rejected is consistent with the preset invalid ticket information.

[0026] Furthermore, the suction cup separates the rejected banknotes from the banknotes, including:

[0027] If the information of the invalid banknote to be rejected is consistent with the preset invalid banknote information, the suction cup separates the invalid banknote to be rejected from the next banknote using the cutting head;

[0028] The suction cup adsorbs the rejected banknotes through the suction hole, separating the rejected banknotes from the banknotes.

[0029] Further, the suction nozzle picks up the separated waste tickets and places them into the waste ticket bin, including:

[0030] After the suction nozzle picks up the separated invalid banknotes to be rejected, the OCR image recognition and processing system and the PLC central control system determine whether the suction nozzle has picked up two banknotes.

[0031] If the suction nozzle does not pick up two banknotes, the suction nozzle will place the discarded banknotes into the discarded banknote compartment.

[0032] Further, the step of determining whether the suction nozzle picks up two banknotes through the OCR image recognition and processing system and the PLC central control system includes:

[0033] The OCR image recognition and processing system captures an image of the next banknote and recognizes the information of the next banknote, then sends the information of the next banknote to the PLC central control system;

[0034] The PLC central control system determines whether the suction nozzle should pick up two banknotes based on the information about the next banknote.

[0035] Furthermore, the suction nozzle places the rejected tickets into the rejected ticket bin, including:

[0036] When the suction nozzle places the rejected ticket into the rejected ticket bin, it blows air onto the rejected ticket, causing the rejected ticket to fall horizontally into the rejected ticket bin.

[0037] (3) Beneficial effects

[0038] The above-mentioned technical solution of this application has the following advantages:

[0039] The waste ticket rejection control method provided in this application controls the rotation of a suction cup through an electrical control system to count banknotes and move them to the position of the waste ticket to be rejected. The waste ticket to be rejected is then separated from the banknotes, and the separated waste ticket is then picked up by a suction nozzle and placed into the waste ticket bin. This eliminates the manual picking process and automates the rapid separation of these waste tickets from the stack of products, improving the efficiency and reliability of waste ticket rejection and reducing the cost of waste ticket rejection. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 A flowchart illustrating the invalid ticket rejection control method provided in this application;

[0042] Figures 2 to 4 A schematic diagram of the waste ticket absorbing device provided in this application;

[0043] Figures 5 to 6 A schematic diagram of the suction cup provided in this application;

[0044] Figure 7 This is a schematic diagram of the nozzle's motion trajectory provided in this application;

[0045] Figures 8 to 10 This is a schematic diagram of the suction cup process for separating waste tickets provided in this application.

[0046] Reference numerals in the attached diagram: 1. Base platform; 2. Trolley; 3. Left baffle motor; 4. Right baffle motor; 5. Left baffle; 6. Suction nozzle; 7. Right baffle; 8. Suction cup; 9. Suction nozzle motor; 10. Suction cup motor; 11. Camera; 12. Waste ticket bin; 13. Up and down motors; 14. Ion generator; 15. Suction cup motor cable; 16. Right baffle roller; 17. Limit switch. Detailed Implementation

[0047] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of this application with unnecessary detail.

[0048] It should be understood that, when used in this application specification and appended claims, the term "comprising" indicates the presence of the described feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. The terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, in the description of this application specification and appended claims, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0051] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0052] The waste ticket rejection control method provided in this embodiment is applied to a waste ticket rejection system, which includes a waste ticket absorbing device, a waste ticket bin, and an electrical control system; the waste ticket absorbing device includes a slide table, a suction cup, and a suction nozzle.

[0053] like Figure 1 As shown, the method for controlling the rejection of invalid tickets includes:

[0054] S100. Place a stack of banknotes containing the invalid banknotes to be rejected on the slide.

[0055] In some embodiments, the waste ticket absorbing device further includes a left baffle and a left baffle motor, a right baffle and a right baffle motor; after placing a stack of banknotes containing waste tickets to be removed onto the slide table, the device further includes: the left baffle motor driving the left baffle to clamp one side of the banknotes, and the right baffle motor driving the right baffle to clamp the other side of the banknotes.

[0056] S200, the electrical control system controls the suction cup to rotate and count banknotes to move to the position of the invalid banknotes to be rejected.

[0057] In some embodiments, the electrical control system includes a PLC central control system; the electrical control system controls the suction cup to rotate and count banknotes to move to the position of the rejected banknotes, including: the PLC central control system controls the suction cup to rotate and count banknotes to move to the position of the rejected banknotes according to preset rejected banknote information.

[0058] In some embodiments, after the electrical control system controls the suction cup to move to the position of the rejected banknotes by rotating to count banknotes, it further includes: when the suction cup moves to the position of the rejected banknotes, the left baffle motor drives the left baffle to tilt away from the right baffle.

[0059] In some embodiments, the electrical control system further includes an OCR image recognition and processing system; after the left baffle motor drives the left baffle to tilt away from the right baffle when the suction cup moves to the position of the rejected ticket, the system further includes: the OCR image recognition and processing system taking an image of the rejected ticket and recognizing the rejected ticket information, and sending the rejected ticket information to the PLC central control system.

[0060] In some embodiments, after the OCR image recognition and processing system captures an image of the invalid ticket to be rejected and identifies the invalid ticket information to be rejected, and sends the invalid ticket information to the PLC central control system, the system further includes: the PLC central control system determining whether the invalid ticket information to be rejected is consistent with the preset invalid ticket information.

[0061] S300, the suction cup separates the rejected bills from the banknotes.

[0062] In some embodiments, the suction cup separates the rejected bill from the banknotes, including: if the rejected bill information matches the preset rejected bill information, the suction cup separates the rejected bill from the next banknote using a cutting head; the suction cup adsorbs the rejected bill through a suction hole, thus separating the rejected bill from the banknotes.

[0063] S400, the suction nozzle picks up the separated waste tickets to be rejected and puts the waste tickets to be rejected into the waste ticket bin.

[0064] In some embodiments, the suction nozzle picks up the separated invalid banknotes and places them into the invalid banknote bin, including: after the suction nozzle picks up the separated invalid banknotes, the OCR image recognition and processing system and the PLC central control system determine whether the suction nozzle picks up two banknotes; if the suction nozzle does not pick up two banknotes, the suction nozzle places the invalid banknotes into the invalid banknote bin.

[0065] In some embodiments, determining whether the suction nozzle picks up two banknotes through the OCR image recognition and processing system and the PLC central control system includes: the OCR image recognition and processing system taking an image of the next banknote and recognizing the information of the next banknote, and sending the information of the next banknote to the PLC central control system; the PLC central control system determining whether the suction nozzle picks up two banknotes based on the information of the next banknote.

[0066] In some embodiments, the suction nozzle places the rejected ticket into the rejected ticket bin, including: when the suction nozzle places the rejected ticket into the rejected ticket bin, blowing air onto the rejected ticket to cause the rejected ticket to fall horizontally into the rejected ticket bin.

[0067] In applications, such as Figures 2 to 4 As shown, the slide table includes a base platform 1 and a trolley 2. Except for the electrical control system, almost all components operate on the base platform 1. When operation begins, the base platform 1 tilts to the left and rear under the drive of the base tilting motor. The trolley 2 initially operates at the far right of the base platform 1. After starting operation, the platform tilts, and under the influence of gravity, while the suction cup 8 rapidly rotates and counts the banknotes, it slowly moves to the left until all banknotes have been counted.

[0068] When the machine starts working, the left baffle motor 3 and the right baffle motor 4 extend forward. Under the thrust of the left baffle motor 3, the left baffle 5 and the right baffle 7 clamp the banknotes tightly, preventing them from slipping or leaving gaps. When the suction cup 8 counts banknotes with a specified number that need to be rejected, the left baffle motor 3 retracts, causing the left baffle 5 to tilt to the left. The counted banknotes also tilt to the left, while the uncounted banknotes are blocked by the suction cup 8 and remain upright, thus providing suction space for the suction nozzle 6.

[0069] like Figure 5 and Figure 6 As shown, each suction cup 8 has 6 blades, each with holes on both the front and back. The hole on the front is for a pressure sensor, used for counting banknotes, while the hole on the back is for suction, used to pick up rejectable banknotes and remove them from the original stack. After image comparison confirms that the banknote is to be rejected, the suction nozzle 6 uses negative pressure to lift the banknote. Driven by the suction nozzle motor 9 and the up-and-down motor 13, the banknote is moved to the reject banknote bin 12, and then the negative pressure is cut off. The suction nozzle motor 9 controls the movement of the suction nozzle 6 by extending and retracting. The suction cup motor 10 drives the suction cup 8 to rotate at high speed for counting. The motor speed is 6000 rpm, and by setting a reduction ratio of 1:5, the maximum speed of the motor is controlled at 1200 rpm. The up-and-down motor 13 controls the up-and-down movement of the suction nozzle 6.

[0070] The suction cup motor 10 is a servo motor, while the left baffle motor 3, right baffle motor 4, suction nozzle motor 9, and up / down motor 13 are stepper motors. An ion generator 14 prevents banknotes from sticking due to static electricity and eliminates static charge. The suction cup motor cable 15 connects to the 24V control and 380V drive. The right baffle roller 16 is used to limit the movement of the right baffle 7. Limit switches 17 limit the movement of each motor.

[0071] Camera 11 is part of the OCR image recognition and processing system, used to capture images of banknotes and identify banknote information such as serial numbers. It then converts these serial numbers into characters and sends them to the PLC central control system for comparison. The waste banknote bin 12 is used to store waste banknotes and is made of hard aluminum. This bin is a small rectangle and is equipped with a blower. When a new waste banknote is sent to the bin, the blower blows it horizontally.

[0072] In application, the electrical control system includes an OCR image recognition and processing system and a PLC central control system. The OCR image recognition and processing system mainly completes the work of capturing and transmitting the waste ticket number and the suction cup stop position number. The PLC central control system mainly completes the functions of reading waste ticket files, calculating suction cup counting intervals, calculating the sequence number of waste ticket stop position, counting the number of waste tickets taken per thousand banknotes, comparing the data transmitted by the OCR image recognition and processing system with the waste ticket file data, and controlling each actuator.

[0073] The counting module consists of a suction cup, six sets of cutting heads, and a pressure sensor. Several vacuum suction holes on the suction cup near the cutting heads are used to attract banknotes. When a banknote is attracted to the suction cup by these holes, the cutting head separates the banknote from the stack. Simultaneously, the attracted banknote also blocks an air vent of the pressure sensor, generating a pulse signal. This signal serves as the input for counting and is transmitted to the PLC control system via its extended input / output device. This completes the functions of attracting and separating individual banknotes from the stack and counting the banknotes. One rotation of the suction cup corresponds to one rotation of the six attached cutting heads, counting six banknotes.

[0074] Considering that if the suction cup picks up banknotes at different positions each time, the tips of the six sets of blades may hit or damage the banknotes, the suction cup blades perform a zero-finding action after each power-on to ensure that the suction cup picks up banknotes at a fixed distance from each blade tip.

[0075] When the suction cup reaches the position where the bill to be rejected is to be moved, the left baffle motor on the slide moves to the left, opening the left baffle. Through the tilt of the slide and the use of gravity, a position is created for rejection, providing space for the OCR image recognition and processing system to capture images and for rejecting rejected bills. The preset rejected bill information can be a preset rejected bill number. The OCR image recognition and processing system takes a picture and transmits the captured rejected bill number to the PLC central control system. The PLC central control system compares the rejected bill number with the preset rejected bill number. If they match, the suction action is executed. If they do not match, it is determined whether the position has been missed or not, requiring manual intervention. A banknote with the preset rejected bill number is placed at the last position after the suction cup, and a new picture is taken. After a match is confirmed, the suction cup slowly rotates 30 degrees, separating the rejected bill from the next banknote via the suction cup's cutting head. This action is primarily to prevent the suction cup from picking up double bills. After the discarded bills are separated from the edges of the suction cup blades, the suction cup rotates 30 degrees in the opposite direction. Using the suction force of the suction cup's air holes, the discarded bills to be removed are completely separated from the stack of banknotes, forming an upward trend.

[0076] At this point, air is drawn through the suction nozzle, and the nozzle motor and the upper and lower motors work together to perform the ticket-collecting action, with the movement path as follows: Figure 7 As shown in the diagram (suction nozzle movement trajectory), the suction nozzle motor moves from position A to position C via movements 1 and 2, performing the suction action to remove discarded banknotes. After suction, it moves from position C to position D via movements 3 and 4. At point D, after the PLC control system confirms there are no duplicate banknotes (i.e., the PLC control system verifies the next banknote's serial number is correct), the up and down motors perform an upward and horizontal movement from position D to position E. Upon reaching the discarded banknote compartment, the suction stops, lowering the rejected banknote to the upper part of the compartment. Simultaneously, the blower in the discarded banknote compartment is switched on and off via a solenoid valve, causing the rejected banknote to fall horizontally to the bottom of the compartment. After lowering the rejected banknote, the suction nozzle motor returns to the waiting position (A). The PLC control system reads the next counting suction cup rotation interval and continues the process of removing the next discarded banknote. Using two suction nozzles on a single suction nozzle motor to simultaneously hold different positions of a banknote avoids the instability or banknote slippage caused by using a single suction nozzle.

[0077] The following example illustrates how to remove 5 invalid banknotes from a stack of 1 foot (i.e., 1000 small banknotes with the same thousandth digit). Arbitrarily assign the positions of the 5 incorrect banknotes, for example, AB0001038, AB0001245, AB0001583, AB0001874, and AB0001923. Place a stack (one foot) of banknotes numbered AB0001000-AB0001999 onto the slide table. Adjust the position of the suction cup cutter head. The left and right baffles, driven by a stepper motor, clamp the banknotes. The suction cup begins to rotate and count. According to the preset value, the suction cup counts 6 banknotes per revolution. After the cutter head counts 38 banknotes, the suction cup brakes and stops rotating.

[0078] The OCR image recognition and processing system begins taking pictures at the corresponding locations where invalid banknotes are to be rejected, extracting the serial number information, and sending it to the PLC central control system for comparison. After the PLC central control system verifies the information is correct, the suction nozzles begin working, suctioning from top to bottom simultaneously. At the same time, the suction cup rotates 30 degrees clockwise, using the blades on the suction cup to separate banknote number AB0001038 from the next banknote numbered 1039. The PLC central control system then controls the suction cup to rotate 30 degrees backward, using the negative pressure from the front and back of the suction cup blades to tilt banknote number 1038 upward at approximately a 15-degree angle, completely separating it from the original stack of banknotes. At this point, the two suction nozzles, controlled by the same negative pressure and upper and lower motors, move into position and pick up banknote number 1038. The process of the suction cup separating invalid banknotes is as follows: Figures 8 to 10 As shown.

[0079] The suction nozzle moves upwards by 15cm and stops. The OCR image recognition and processing system then photographs and recognizes the next banknote, sending the recognized serial number to the PLC control system. The PLC control system compares the serial number to 1039. If it is, the suction nozzle continues upwards to send the discarded banknote to the discard bin. If not, it indicates that the suction cup may be holding two banknotes. In this case, manual intervention is required. When the suction nozzle reaches a position above the discard bin, the front and rear motors of the suction nozzle operate, sending the banknote into the discard bin, and then the suction stops. Banknote 1038 falls into the first section of the discard bin, currently in a vertical position. To avoid interfering with the next discarded banknote, the banknote is blown to the second section of the discard bin by the airflow along the upper edge, allowing it to lie horizontally.

[0080] Repeat the above steps to completely put the banknotes numbered AB0001038, AB0001245, AB0001583, AB0001874, and AB0001923 into the waste banknote storage.

[0081] The waste ticket rejection control method provided in this application utilizes preset waste ticket information to guide a suction cup to the location of the waste ticket to be rejected, remove the waste ticket, identify and confirm its number, exclude duplicate tickets, and place it in a special waste ticket bin. This application can eliminate the manual picking process, quickly separating these defective waste products from the stack of production products through automation. Due to the precise comparison of the vision system, erroneous rejection caused by visual fatigue is completely avoided, greatly ensuring and improving the safety and reliability of production.

[0082] Because newly manufactured banknotes may contain static electricity or have high adhesion, manual production often makes it difficult to separate a single banknote from a stack. Furthermore, human hands and ink can easily soil or crease new banknotes. Therefore, this application completely avoids these problems and effectively prevents damage to new banknotes.

[0083] Those skilled in the art will recognize that the device and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0084] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interface, or the device may be indirectly coupled or communicated, and may be electrical, mechanical, or other forms.

[0085] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for controlling the rejection of invalid tickets, characterized in that, This invention relates to a system for rejecting banknotes. The system includes a banknote collection device, a banknote storage compartment, and an electrical control system. The banknote collection device includes a slide table, a suction cup, and a suction nozzle. The slide table includes a base platform and a trolley. When operation begins, the base platform tilts to the left rearward under the drive of a base tilting motor. The trolley initially operates at the far right of the base platform. After operation begins, the platform tilts, and under the influence of gravity, while the suction cup rapidly rotates and counts the banknotes, it slowly moves to the left until all banknotes have been counted. The suction cup has six blades, each with holes on both the front and back. The hole on the front is for a pressure sensor, used for counting banknotes; the hole on the back is for suction, used to absorb the banknotes to be rejected and remove them from the original stack. The method for controlling the rejection of invalid tickets includes: A stack of banknotes containing the invalid bills to be rejected is placed on the slide. The electrical control system controls the suction cup to rotate and count banknotes in order to move to the position of the invalid banknotes to be rejected. The suction cup separates the rejected bills from the banknotes; The suction nozzle picks up the separated waste tickets and puts them into the waste ticket bin; The waste ticket collection device also includes a left baffle and a left baffle motor, a right baffle and a right baffle motor; After placing a stack of banknotes containing rejected bills onto the slide, the process further includes: The left baffle motor drives the left baffle to clamp one side of the banknote, and the right baffle motor drives the right baffle to clamp the other side of the banknote; The electrical control system includes a PLC central control system; The electrical control system controls the suction cup to move to the position of the rejected banknotes by rotating and counting them, including: The PLC central control system controls the suction cup to rotate and count banknotes according to the preset invalid banknote information, so as to move to the position of the invalid banknote to be rejected. After the electrical control system controls the suction cup to move to the position of the invalid banknotes to be rejected by rotating it to count the banknotes, it also includes: When the suction cup moves to the position of the invalid ticket to be rejected, the left baffle motor drives the left baffle to tilt away from the right baffle; The electrical control system also includes an OCR image recognition and processing system; When the suction cup moves to the position of the rejected ticket to be removed, after the left baffle motor drives the left baffle to tilt away from the right baffle, the method further includes: The OCR image recognition and processing system captures the image of the invalid ticket to be rejected and identifies the information of the invalid ticket to be rejected, and sends the information of the invalid ticket to be rejected to the PLC central control system; The OCR image recognition and processing system captures an image of the invalid ticket to be rejected and identifies the invalid ticket information. After sending the invalid ticket information to the PLC central control system, it also includes: The PLC central control system determines whether the information of the invalid tickets to be rejected is consistent with the preset invalid ticket information; The suction cup separates the rejected banknotes from the banknotes, including: If the information of the invalid banknote to be rejected is consistent with the preset invalid banknote information, the suction cup separates the invalid banknote to be rejected from the next banknote using the cutting head; The suction cup adsorbs the rejected banknotes through the suction hole, separating the rejected banknotes from the banknotes; The suction cup rotates slowly by 30 degrees, allowing the rejected bill to be separated from the next banknote by the blade of the suction cup, thus preventing the suction cup from picking up two bills at once. After the corners of the discarded banknotes close to the suction cup blade are separated, the suction cup rotates 30 degrees in the opposite direction. Using the suction force of the suction cup's air holes, the discarded banknotes are completely separated from the stack of banknotes, forming an upward trend.

2. The method for controlling the rejection of invalid tickets as described in claim 1, characterized in that, The suction nozzle picks up the separated waste tickets and places them into the waste ticket bin, including: After the suction nozzle picks up the separated invalid banknotes to be rejected, the OCR image recognition and processing system and the PLC central control system determine whether the suction nozzle has picked up two banknotes. If the suction nozzle does not pick up two banknotes, the suction nozzle will place the discarded banknotes into the discarded banknote compartment.

3. The method for controlling the rejection of invalid tickets as described in claim 2, characterized in that, The step of determining whether the suction nozzle picks up two banknotes through the OCR image recognition and processing system and the PLC central control system includes: The OCR image recognition and processing system captures an image of the next banknote and recognizes the information of the next banknote, then sends the information of the next banknote to the PLC central control system; The PLC central control system determines whether the suction nozzle should pick up two banknotes based on the information about the next banknote.

4. The method for controlling the rejection of invalid tickets as described in claim 2, characterized in that, The suction nozzle places the rejected tickets into the rejected ticket bin, including: When the suction nozzle places the rejected ticket into the rejected ticket bin, it blows air onto the rejected ticket, causing the rejected ticket to fall horizontally into the rejected ticket bin.

Images