A detection device and method for electronic eye of paper shredder

Abstract

The present invention relates to a detection device and method for an electronic eye of a shredder, the detection device comprising a fixing plate (11), a first motor (1), a main board (10), a display (9), a cardboard (2) and an electronic eye (4), wherein a transmitting end (401) and a receiving end (402) of the electronic eye (4) are arranged opposite to each other and form a channel for the side of the cardboard (2) to pass through, and the cardboard (2) can be driven by the first motor (1) to continuously rotate through the channel and contact and rub with the transmitting end (401) and the receiving end (402); the detection method comprises measuring the voltage of the electronic eye receiving end (402) to preliminarily determine the quality of the electronic eye (4), and then comparing the number of rotations of the cardboard (2) when the electronic eye (4) rubs against the cardboard (2) so that the electronic eye (4) is damaged with the designed shredding amount of the shredder to determine the quality of the electronic eye. The present invention has a reasonable design, avoids waste of material and manpower, and is very cost-saving.

Description

Technical Field

[0001] The invention relates to the field of paper shredders, and in particular to a detection device and method for electronic eyes of paper shredders. Background Art

[0002] Electronic eyes are widely used in shredders as automatic sensing devices, especially at the paper inlet of the shredder. When paper is inserted into the paper inlet, the electronic eye can sense the operation and then send a signal to the shredder to control the machine to automatically shred paper.

[0003] However, during the shredding process, the shredder is prone to generate dust. If a large amount of dust falls on the electronic eye, it will affect the sensitivity of the electronic eye in sending and receiving, which may cause the machine to stop due to inaccurate sensing. In order to solve this problem, the electronic eye is usually brought into contact with the paper and slightly rubbed, thereby achieving the effect of cleaning the dust on the electronic eye while shredding the paper. However, this creates another problem, that is, under this design, the long-term friction between the paper and the electronic eye will cause a certain degree of wear on the electronic eye and cause the shredder to malfunction.

[0004] An effective way to solve this problem is to use an electronic eye with a long service life, but this depends on the test of the electronic eye's service life before assembly. At present, the usual practice is to conduct sampling inspections on finished shredders, that is, to use finished shredders for shredding tests and record the amount of shredded paper before the electronic eye is damaged. The amount of shredded paper corresponds to the service life of the electronic eye. Although this method of testing can reflect the quality of shredders in the same production batch to a certain extent, if the service life of the electronic eye is 10,000 shredded sheets, then it must be verified by shredding 10,000 sheets of paper, and the shredder after the test and verification will also be scrapped, which will cause a huge waste of material and manpower. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a detection device for the electronic eye of a shredder, which uses a special detection device to perform a separate detection on the electronic eye, and eliminates unqualified electronic eyes before the product is assembled and shipped, thereby ensuring the quality of the shredder leaving the factory, shortening the detection time, and reducing resource waste.

[0006] The present invention provides a detection device for electronic eyes of a paper shredder, characterized in that the device comprises:

[0007] Fixed plate;

[0008] A first motor is arranged at one end of the fixed plate, and a paperboard is connected to an output shaft of the first motor;

[0009] An electronic eye is located on the fixed plate, wherein a transmitting end and a receiving end of the electronic eye are arranged opposite to each other, and a channel is formed between the two ends for the side of the paperboard to pass through. The paperboard can rotate in the channel and contact and rub against the electronic eye when driven by the first motor;

[0010] A control main board located on the fixed plate and electrically connected to the electronic eye and the first motor; and

[0011] Display for recording the number of cardboard rotations.

[0012] Furthermore, the transmitting end and the receiving end are connected by a connecting piece that enables the transmitting end and the receiving end to move synchronously. The connecting piece enables the transmitting end and the receiving end to move synchronously, ensuring the normal operation of the electronic eye and improving the working efficiency.

[0013] Furthermore, the detection device further comprises a second motor for driving the connecting member to move, a gear is arranged on the output shaft of the second motor, and the connecting member is connected to a rack meshing with the gear to drive the electronic eye to move. By driving the electronic eye to move by the second motor, it is convenient to automatically control the movement of the electronic eye, and the operation is convenient.

[0014] Furthermore, the fixing plate is provided with a through groove corresponding to the channel for the side surface of the paperboard to pass through.

[0015] Furthermore, in order to ensure that the cardboard and the electronic eye maintain good contact friction when the connecting piece moves, sliding grooves for the connecting piece to slide are provided on both sides of the through groove.

[0016] On the other hand, the present invention also aims to provide a detection method for electronic eyes of paper shredders, which can effectively improve the detection efficiency and is easy to operate. A detection method for electronic eyes of paper shredders, characterized in that: the method comprises:

[0017] Step s1, setting parameters and starting the detection device, while recording the number of rotations of the paperboard, wherein the parameters include a threshold value of the number of frictions between the same position of the paperboard and the electronic eye when the paperboard rotates;

[0018] Step S2, when the number of rotations reaches the threshold, the electronic eye moves a certain distance to update the contact and friction position with the paperboard;

[0019] Step S3, continue to record the number of cardboard rotations, and repeat step S2 until the electronic eye is damaged, and record the final number of rotations;

[0020] Step S4, if the final number of rotations is greater than or equal to the shredder's shredding amount required by the standard, the electronic eye is qualified, otherwise, the electronic eye is unqualified;

[0021] Step s5, shutdown and reset.

[0022] Furthermore, in step S1, while recording the number of rotations of the paperboard, the following operations are also performed:

[0023] Step S11, detecting the voltage at the receiving end of the electronic eye and making a judgment;

[0024] Step S12, if the voltage meets the requirements, continue to record the number of rotations; if the voltage does not meet the requirements, execute step S5.

[0025] Furthermore, the step S12 is specifically as follows:

[0026] If the voltage displayed is greater than or equal to 2.5V when there is cardboard between the transmitting end and the receiving end, or the voltage displayed is less than 0.2V when the cardboard is removed, the voltage meets the requirements, indicating that the electronic eye is preliminarily qualified; otherwise, the voltage does not meet the requirements, indicating that the electronic eye is unqualified, and step S5 is executed.

[0027] Furthermore, the parameters set in step S1 also include the rotation speeds of the first motor and the second motor, and the distance the electronic eye moves each time.

[0028] Furthermore, in step S2, the electronic eye moves forward a certain distance specifically as follows:

[0029] When the number of frictions between the same position and the electronic eye reaches the threshold when the cardboard rotates, the second motor drives the connecting member to move according to the set rotation speed, and drives the electronic eye to move according to the distance moved each time.

[0030] Compared with the prior art, the advantages of the present invention are: a specially designed shredder electronic eye detection device can perform sampling detection on the electronic eye separately, which overcomes the trouble of taking the entire shredder as the test target in the past. At the same time, the detection device can preliminarily judge whether the electronic eye is qualified by testing the voltage between the electronic eyes, so as to ensure that the shredder has high quality when leaving the factory. By replacing the real paper friction electronic eye with the cardboard rotating friction electronic eye to test the service life, the detection efficiency can be effectively improved, without consuming a lot of manpower and material resources, reducing the detection cost, further ensuring the product quality of the shredder, and improving user satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a top view of a preferred embodiment of the present invention;

[0032] Figure 2 It is a front view structural schematic diagram of a preferred embodiment of the present invention;

[0033] Figure 3 It is a left-side structural schematic diagram of a preferred embodiment of the present invention;

[0034] Figure 4The figure is a flow chart of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] like Figures 1 to 3 This is a structural schematic diagram of a preferred embodiment of the present invention. The device includes a fixed plate 11 for mounting various components, a first motor 1 for providing power, and a control main board 10 for controlling the device. The first motor 1 is arranged at one end of the fixed plate 11. For layout coordination, the control main board 10 is arranged at the other end of the fixed plate 11. The control main board 10 and the motor are located on the same side of the fixed plate 11.

[0037] The rotating shaft of the first motor 1 is connected with a cardboard 2, and the electronic eye 4 is arranged on a fixed plate 11. The receiving end 402 and the transmitting end 401 of the electronic eye 4 are arranged opposite to each other, and the transmitting end 401 and the receiving end 402 form a channel 13 for the cardboard 2 to pass through. When the cardboard 2 rotates with the first motor 1, it constantly contacts and rubs with the transmitting end 401 and the receiving end 402 of the electronic eye 4, so as to simulate the friction between the paper and the transmitting end 401 and the receiving end 402 of the electronic eye 4 when the shredder is working, thereby avoiding the waste of paper caused by using a finished shredder for testing and verification, and by recording the number of rotations of the cardboard 2 when the electronic eye 4 is damaged, and comparing the number of rotations with the number of shredders required by the standard, it can be judged whether the quality of the electronic eye 4 meets the requirements.

[0038] In this embodiment, the electronic eye 4 uses an infrared sensor. At the same time, in order to make the appearance neat and beautiful, a through groove 12 is provided on the fixed plate 11 at a position corresponding to the transmitting end 401 and the receiving end 402 of the electronic eye 4 for the side of the cardboard 2 to pass through when rotating. Of course, this is only a preferred method, and it can also be designed in other forms that can provide the cardboard 2 with rotation space.

[0039] In order to enable the transmitting end 401 and the receiving end 402 of the electronic eye 4 to move synchronously, the transmitting end 401 and the receiving end 402 are connected by a connecting piece 8, so that the positions of the transmitting end 401 and the receiving end 402 always remain corresponding to each other, thereby ensuring that the receiving end 402 of the electronic eye 4 can receive the signal sent by the transmitting end 401 to maintain normal operation.

[0040] After the cardboard 2 is in contact and rubbed with the electronic eye 4 for a certain period of time, it will be worn and affect the accuracy of the detection. In order to make the detection verification result more accurate, after the same position of the cardboard 2 is in contact and rubbed with the electronic eye 4 for a certain period of time, that is, when the number of frictions reaches the set threshold, it is necessary to change the friction position of the cardboard 2 and the electronic eye 4. In this embodiment, the method of moving the electronic eye 4 is adopted to realize the change of the friction position on the cardboard 2. Specifically, a rack 7 is installed on the connecting member 8, and the rack 7 is arranged along the direction of the through groove 12. A gear 5 meshing with the rack 7 is arranged on the rotating shaft of the second motor 6. When the second motor 6 rotates, the gear 5 drives the rack 7 to move, thereby moving the electronic eye 4 connected to the connecting member 8. The electronic eye 4 here can also be moved in other ways, such as manually pushing, such as using two second motors 6 to synchronously drive the transmitting end 401 and the receiving end 402 of the electronic eye 4 to move.

[0041] In this embodiment, in order to facilitate the movement of the electronic eye 4 and its connecting member 8, slide grooves 3 for the connecting member 8 to move are provided on both sides of the through groove 12. The movement of the connecting member 8 in the slide groove 3 can make the sliding direction more accurate, avoiding the direction deviation and affecting the test results. In order to timely understand the number of rotations of the cardboard 2, the device is also provided with a display 9 for recording and displaying the number of rotations of the cardboard. Of course, the data displayed by the display 9 here can also be the number of intermittent signals between the transmitting end 401 and the receiving end 402 of the electronic eye 4. Of course, indirect data can also be recorded and simply converted, such as recording the detection and verification working time and the known speed of the motor to obtain the number of rotations by simple calculation.

[0042] The present invention also relates to a method for detecting the electronic eye 4 of a shredder, such as Figure 4 As shown, the implementation process of the detection method is as follows:

[0043] First, set the relevant parameters of the detection device, start the detection device, and record the number of rotations of the paperboard 2. The relevant parameters include the rotation speed of the first motor 1, the threshold of the number of frictions between the paperboard 2 and the electronic eye 4 at the same position during rotation, the distance the electronic eye 4 moves each time, and the rotation speed of the second motor 6.

[0044] When setting parameters, the following factors are preferably considered: the rotation speed of the first motor 1 matches the shredding speed of the shredder to achieve the best simulation effect; the threshold value is determined based on experience when comprehensively considering factors such as material saving and simulation effect; the distance that the electronic eye 4 moves each time needs to be set to consider the shredding amount of the shredder required by the standard. After successful startup, the display 9 starts to record and display the number of rotations of the cardboard 2, and the inspection personnel can know the number of rotations of the cardboard 2 in a timely manner.

[0045] After the device is successfully started, the voltage of the receiving end 402 of the electronic eye 4 is measured to preliminarily check for unqualified electronic eyes 4. If the voltage is greater than or equal to 2.5V when there is a cardboard 2 between the transmitting end 401 and the receiving end 402, and the voltage is less than 0.2V when the cardboard 2 is removed, the voltage meets the requirements, indicating that the electronic eye 4 meets the requirements, and the subsequent service life test is continued; otherwise, if the voltage does not meet the requirements, the electronic eye 4 is judged to be unqualified, the device is shut down and reset, and a new electronic eye 4 is replaced for further testing and verification.

[0046] It should be noted that the voltage value here is only a specific situation in the detection test, and the value can be determined in the detection test according to the changing voltage values ​​of the power supply and related parameters. In actual use, after the paper is shredded, if the voltage at the receiving end is detected to be greater than 0.8V, the machine will always think that the paper is not shredded and will not stop. The present application can conduct a preliminary inspection of the quality of the electronic eye 4 through such voltage detection, and promptly eliminate products with unqualified quality. Only when the preliminary inspection is qualified, the subsequent contact friction inspection and verification can be carried out, thereby reducing the unqualified rate before the shredder is assembled and shipped.

[0047] When the voltage detection meets the requirements, the number of rotations of the cardboard 2 is continued to be recorded and displayed. When the number of frictions between the same position of the cardboard 2 and the electronic eye reaches the set threshold, that is, when the number of rotations of the cardboard 2 reaches the set value of the number of rotations, the second motor 6 is started, and the rack 7 connected to the connecting member 8 is driven by the second motor 6 according to the set speed, so that the electronic eye 4 connected to the connecting member 8 moves to the next position according to the set moving distance, so that the contact friction position between the cardboard 2 and the electronic eye 4 is changed and updated, so as to avoid the cardboard 2 and the electronic eye 4 being worn due to long-term friction and failing to achieve the test and inspection effect. This is repeated continuously until the electronic eye 4 is damaged, and the final number of rotations of the cardboard 2 is recorded and displayed. The final number of rotations of the cardboard 2 is compared with the shredder shredding amount required by the standard. If the final number of rotations of the cardboard 2 is greater than or equal to the shredder shredding amount required by the standard, it means that the quality of the electronic eye 4 meets the requirements, otherwise, the quality of the electronic eye 4 is unqualified. After the detection and verification is completed, the detection device is shut down and reset for the next set of test verifications.

[0048] The present invention designs a special detection device and method for the electronic eye 4 of the shredder to simulate the working process of the shredder to detect and verify the electronic eye 4 of the shredder, without using the whole shredder to test and verify the electronic eye 4. The operation is more convenient and does not require a large amount of material and manpower, so the cost is very saved. Moreover, the detection operation can be completed before the shredder leaves the factory, and the fault detection can be advanced before the machine leaves the factory, thereby ensuring product quality and user satisfaction.

[0049] In addition to the above improvements, other similar improvements are also included in the scope of improvement of the present invention, which will not be described in detail here. Although the embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principles and purpose of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A detection device for electronic eye of paper shredder, characterized by: The device comprises, Fixed plate (11); A first motor (1) is arranged at one end of the fixed plate (11), wherein a paperboard (2) is connected to an output shaft of the first motor (1); An electronic eye (4) is located on the fixed plate (11), wherein a transmitting end (401) and a receiving end (402) of the electronic eye (4) are arranged opposite to each other, and a channel (13) is formed therebetween for the side of the paperboard (2) to pass through, and the paperboard (2) can rotate in the channel (13) and contact and rub against the electronic eye (4) when driven by the first motor (1); a control main board (10) located on the fixed plate (11) and electrically connected to the electronic eye (4) and the first motor (1); and a display (9) for recording the number of rotations of the paperboard (2); The detection method used for the above detection device includes: Step S1, setting parameters and starting the detection device, while recording the number of rotations of the paperboard (2), wherein the parameters include a threshold value of the number of frictions between the same position of the paperboard and the electronic eye (4) when the paperboard (2) rotates; Step S2, when the number of rotations reaches the threshold, the electronic eye (4) moves a certain distance to update the contact and friction position with the paperboard; Step S3, continue to record the number of rotations of the paperboard (2), and repeat step S2 until the electronic eye (4) is damaged, and record the final number of rotations; Step S4, if the final number of rotations is greater than or equal to the shredder's shredding amount required by the standard, the electronic eye is qualified, otherwise, the electronic eye is unqualified; Step S5, shutdown and reset.

2. The detection device for electronic eye of paper shredder according to claim 1, characterized in that: The transmitting end (401) and the receiving end (402) are connected via a connecting piece (8) that enables the transmitting end (401) and the receiving end (402) to move synchronously.

3. The detection device for electronic eye of paper shredder according to claim 2, characterized in that: The detection device further comprises a second motor (6) for driving the connecting member (8) to move, a gear (5) being arranged on an output shaft of the second motor (6), and the connecting member (8) being connected to a rack (7) meshing with the gear (5) to drive the electronic eye (4) to move.

4. The detection device for electronic eye of paper shredder according to claim 2, characterized in that: The fixing plate (11) is provided with a through slot (12) corresponding to the channel (13) for allowing the side of the paperboard (2) to pass through.

5. The detection device for electronic eye of paper shredder according to claim 4, characterized in that: Sliding grooves (3) for the connecting member (8) to slide are provided on both sides of the through groove (12).

6. The detection device for electronic eye of paper shredder according to claim 1, characterized in that: In step S1, while recording the number of rotations of the paperboard (2), the following operations are also performed: Step S11, detecting the voltage of the receiving end (402) of the electronic eye (4) and making a judgment; Step S12, if the voltage meets the requirements, continue to record the number of rotations; if the voltage does not meet the requirements, execute step S5.

7. The detection device for electronic eye of paper shredder according to claim 6, characterized in that: The step S12 is specifically as follows: If the voltage is greater than or equal to 2.5V when there is a cardboard (2) between the transmitting end (401) and the receiving end (402), or the voltage is less than 0.2V when the cardboard (2) is removed, the voltage meets the requirements, indicating that the electronic eye (4) is preliminarily qualified; otherwise, the voltage does not meet the requirements, indicating that the electronic eye (4) is unqualified, and step S5 is executed.

8. The detection device for electronic eye of paper shredder according to claim 1, characterized in that: The parameters set in step S1 also include the rotation speeds of the first motor (1) and the second motor (6), and the distance the electronic eye (4) moves each time.

9. The detection device for electronic eye of paper shredder according to claim 1, characterized in that: In step S2, the electronic eye (4) moves forward a certain distance, specifically, When the number of frictions between the same position of the paperboard (2) and the electronic eye reaches the threshold value when the paperboard (2) rotates, the second motor (6) drives the connecting member (8) to move according to the set rotation speed, and drives the electronic eye (4) to move according to the distance moved each time.

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