RF detector

Abstract

An RF detection machine comprises a rack, a conveying mechanism, a screening mechanism, a detection mechanism and a control system are arranged on the rack, and the conveying mechanism comprises a conveying module, a conveying module and a positioning module; an RFID reader-writer is arranged on the conveying module, the conveying module can be conveyed to the detection mechanism and / or the screening mechanism through the conveying module, the conveying module can be fixed to a detection station and / or a screening station through the positioning module, and the detection mechanism can detect detection products in the conveying module and write detection results into the RFID reader-writer. And the screening mechanism can read data in the RFID reader-writer and classify the detection products through the data. According to the RF detection machine, integrated detection and detection piece screening are achieved, full-automatic detection is achieved, and meanwhile in the detection process, shielding type detection is achieved, and interference of external signals is isolated.

Description

Technical Field

[0001] The present invention relates to an RF detection machine. Background Art

[0002] An RF detector, or radio frequency detector, is a device used to detect radio frequency (RF) signals. It uses an antenna to receive RF signals in space, converts them into electrical signals, and then uses circuits to amplify and filter the electrical signals, extracting the signal's characteristic parameters, such as frequency, amplitude, and phase. Using mathematical methods like Fourier transforms, it then converts the RF signal from the time domain into the frequency domain for analysis. This clearly displays the different frequency components contained in the signal and their strength, thereby detecting the presence of interference signals and the signal's frequency occupancy. RF detection technology is currently widely used in wireless communication equipment testing and debugging, spectrum monitoring, and electromagnetic compatibility testing.

[0003] However, the existing small-scale detection production line has a low degree of integration and requires the cooperation of manual labor or other equipment to complete detection, screening and classification. In addition, there is a situation where the detection device is opened before the shielding cover is securely closed, which causes deviations in the detection results. Therefore, it is necessary to provide an RF detection machine that can achieve integration through mechanical means. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an RF detection machine that can realize integrated mechanical operations such as detection, screening and classification.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: an RF detection machine includes a frame, on which a conveying mechanism, a screening mechanism, a detection mechanism and a control system are provided, the conveying mechanism includes a conveying module, a transmission module and a positioning module; an RFID reader is provided on the conveying module, the conveying module can convey the conveying module to the detection mechanism and / or the screening mechanism, the positioning module can fix the conveying module on the detection station and / or the screening station, the detection mechanism can detect the detection items in the conveying module and write the detection results to the RFID reader, and the screening mechanism can read the data in the RFID reader and classify the detection items based on the data.

[0006] Furthermore, the detection mechanism includes a shielding cover, a detection component, a detection lifting cylinder and a PLC controller; a detection port is set at the bottom of the shielding cover, and the detection component is set above the detection port. When the shielding cover is pressed down by the detection lifting cylinder and the transmission module passes through the detection port and is in the shielding cover, the shielding cover and the transmission module can cooperate to form a shielding space.

[0007] Furthermore, the detection component includes a pressing head and a key cylinder, and the PLC controller can control the key cylinder to press one and / or multiple pressing heads.

[0008] Furthermore, the conveying module includes a conveyor belt, the conveying module is configured on the conveyor belt, the conveying module includes a conveying base and a conveying box, the conveying box is provided with one and / or more placement positions for placing the test items, and the RFID reader is configured at the bottom of the conveying base.

[0009] Furthermore, the conveying base is configured to be slidably connected to the conveyor belt, and the frame is also provided with auxiliary rollers, which can cooperate with the conveying base to control the sliding speed of the conveying base relative to the conveyor belt.

[0010] Furthermore, the positioning module includes a positioning cylinder and a positioning block. The positioning modules are symmetrically arranged on both sides of the conveyor belt. The positioning cylinder can control the positioning block to move away from or close to the conveyor belt. A positioning groove is provided on the conveying base. The positioning block can cooperate with the positioning groove to fix the conveying module on the detection station and / or screening station.

[0011] Furthermore, the screening mechanism includes a mechanical claw, a crossbeam, a material box moving component and a screening controller. The mechanical claw can move horizontally along the crossbeam and can grab or release the inspection items.

[0012] Furthermore, the mechanical claw includes a suction cup and a lifting rod, the material box moving assembly includes a moving belt, a qualified box and a waste box, the suction cup is arranged at the bottom of the lifting rod, and the screening controller can control the extension and retraction of the mechanical claw in the vertical direction and can control the mechanical claw to move above the qualified box and / or the waste box.

[0013] Furthermore, the screening controller can read the data on the RFID reader and control the mechanical claw to place the inspected items into the qualified box or the rejected box according to the data.

[0014] Furthermore, the frame is also provided with photoelectric sensors, which are arranged at the feed port, the inspection station and the screening station to detect whether the inspection products are in place.

[0015] In summary, the RF inspection machine of the present invention achieves integrated testing and screening of test parts, enabling fully automated testing. Furthermore, during the testing process, shielded detection isolates external signal interference. Furthermore, the screening mechanism reads data from the RFID reader to classify test parts as qualified or unqualified, and during the classification process, the tested parts are sequentially sorted into qualified or rejected bins. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the detection machine structure of the present invention Figure 1 .

[0017] Figure 2 Schematic diagram of the detection machine structure of the present invention Figure 2 .

[0018] Figure 3 Schematic diagram of the detection machine structure of the present invention Figure 3 .

[0019] Figure 4 Schematic diagram of the transport mechanism and detection mechanism structure of the present invention Figure 1 .

[0020] Figure 5 Schematic diagram of the transport screening mechanism and detection mechanism structure of the present invention Figure 2 .

[0021] Figure 6 It is a schematic structural diagram of the transmission module of the present invention.

[0022] Figure 7 Schematic diagram of the detection mechanism structure of the present invention Figure 1 .

[0023] Figure 8 Schematic diagram of the detection mechanism structure of the present invention Figure 2 .

[0024] Figure 9 It is a schematic structural diagram of the screening mechanism of the present invention.

[0025] Figure 10 This is a schematic diagram of the structure of electrical contacts provided on the shielding cover and the transmission module of the present invention.

[0026] Figure 11 It is a schematic diagram of the back structure of the conveying base of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] The RF detector of the present invention mainly detects remote control mechanical devices, such as remote controls. Such devices typically include a signal transmitter and a signal receiver. Before a product leaves the factory, it is usually necessary to conduct quality inspections on the signal reception and / or transmission of such products. The present invention mainly detects signal transmitters with buttons. The buttons can be physical buttons or touch screens. Pressing the buttons through the detection mechanism 3 causes the signal transmitter to transmit a signal. At the same time, the signal receiver is placed within the shielding cover 31 of the detection mechanism 3. When the shielding cover 31 isolates all external signal sources, if the signal receiver can connect to the signal transmitter, the product is considered qualified. Otherwise, if the signal receiver cannot connect to the signal transmitter, the product is considered unqualified.

[0029] like Figure 1-11As shown, an RF inspection machine includes a frame 100, on which a conveying mechanism 1, a screening mechanism 2, a detection mechanism 3, and a control system are installed. The conveying mechanism 1 includes a conveying module 11, a transmission module 12, and a positioning module 13. The conveying module 11 is provided with an RFID reader 110. The transmission module 12 can transport the conveying module 11 to the detection mechanism 3 and / or the screening mechanism 2. The positioning module 13 can fix the conveying module 11 at the detection station and / or the screening station. The detection mechanism 3 can detect the inspection items in the conveying module 11 and write the inspection results to the RFID reader 110. The screening mechanism 2 can read the data in the RFID reader 110 and classify the inspection items based on the data. The present invention is an integrated automated inspection machine. The frame 100 is provided with a feed port 104 and a switch 105. The switch 105 is the start button of the RF inspection machine of the present invention. By simply placing the inspection items through the feed port 104 and the transmission module 12 and turning on the switch 105, a series of operations such as fully automated inspection, classification, and packaging can be achieved. The conveying mechanism 1 is mainly used to transport the test products and transport them from the feed port 104 to the testing station and / or screening station; the testing mechanism 3 can form a shielded space, so that the signal transmitter and receiver of the test products are in this shielded space, and then the signal transmitter is started by pressing, ensuring that the signal transmitter transmits the signal without external interference, and writes the test data results into the RFID reader 110; the screening mechanism 2 can read the RFID reader 110 and convert the data signal into a mechanical action, placing the test products into the qualified box 242 and / or the waste box 243; the control system is an electrified system, which realizes the purpose of full automation through the control system. It should be noted that the system algorithm is a prior art. The present invention only improves the mechanical structure and does not improve the system algorithm, so the control system is not described in detail. In terms of electricity, the detection mechanism of the present invention can be connected to the control system via a cable and be controlled by the control system. The control system is equipped with a chip and a control circuit. However, it should be noted that similar methods of chips and control circuits have been available in the prior art, which can simply control the switch of the detection machine. The present invention can adopt the existing technology or a direct combination of the existing technologies. This is not an improvement of the present invention, so it will not be elaborated in detail, but it will not affect the implementation of the present invention by those skilled in the art.

[0030] The conveying mechanism 1 includes a conveying module 11, a transfer module 12, and a positioning module 13. A feed port 104 is located directly above the conveying mechanism 1, and a photoelectric sensor is configured on the feed port 104. A first photoelectric sensor 41 and a second photoelectric sensor 42 are provided on the feed port 104. The first photoelectric sensor 41 is used to detect whether the transfer module 12 is directly below the feed port 104, and the second photoelectric sensor 42 is used to detect whether the test product has been placed in the transfer module 12. When the second photoelectric sensor 42 detects that the test product has been placed in the transfer module 12, it is considered the initial step of the inspection. At this time, the conveying module 11 is activated and the test product is transported to the inspection station. The conveying module 11 includes a conveyor belt 111, and the transfer module 12 is configured on the conveyor belt 111. The conveying module 12 includes a conveyor base 121 and a conveyor box 122. The conveyor box 122 is provided with one or more placement positions 123 for the test product. An RFID reader 110 is configured at the bottom of the conveyor base 121 and is in a data-free state. The conveying base 121 is configured to be slidably connected to the conveyor belt 111. It should be noted that the conveying base 121 can move with the rotation of the conveyor belt 111 without the action of external force. At this time, the movement speed of the conveying base 121 and the conveyor belt 111 is the same. However, because the conveying base 121 is slidably connected to the conveyor belt 111, under the action of external force, the movement speed of the conveying base 121 is greater than the rotation speed of the conveyor belt 111. The conveyor belt 111 rotates at a constant speed under the drive of the servo electrical appliance. The conveyor belt 111 includes an upper conveyor belt 1110 and a lower fixed conveyor belt 1111. As shown in Figure 4, when the conveyor belt 111 transports the conveying modules 12, the number of conveying modules 12 on the upper conveyor belt 1110 is greater than the number of conveying modules 12 on the lower fixed conveyor belt 1111. This design is intended to minimize the number of conveyor modules 12 on the conveyor belt 111 while ensuring normal inspection by the inspection machine, that is, without compromising inspection efficiency. This reduces the burden of the conveyor modules 12 on the conveyor belt 111, prevents deformation of the conveyor belt 111 caused by the weight of the conveyor modules 12, and increases the lifespan of the conveyor belt 111. Furthermore, the frame 100 is provided with auxiliary rollers 103, located below the lower conveyor belt 1111. The auxiliary rollers 103 cooperate with the conveyor base 121 to control the sliding speed of the conveyor base 121 relative to the conveyor belt 111. Simply put, the auxiliary rollers 103 rotate in the same direction as the conveyor gear 119, and their rotational speed is greater than that of the conveyor gear 119 of the conveyor belt 111. When the conveyor module 12 is transported to the lower conveyor belt 1111, the rotation of the auxiliary rollers 103 allows it to quickly move from one end of the lower conveyor belt 1111 to the other.In addition, with the help of the auxiliary roller 103 and multiple conveying modules 12, the conveying module 12 at the end of the lower conveying belt 1111 is moved through the turning point of the conveyor belt 111 to the top of the upper conveyor belt 1110 by extrusion, thereby realizing the complete conveying process of the conveyor belt 111.

[0031] The detection station is provided with a third photoelectric sensor 43. When the transmission module 12 is transported to the detection station by the conveyor belt 111, the third photoelectric sensor 43 can detect the signal and transmit it to the control system. The detection mechanism 3 is activated and begins to detect the test products on the detection station. The screening station is provided with a fourth photoelectric sensor 44. The screening station is configured after the detection station, that is, the conveyor belt 111 transports the transmission module 12 and needs to pass through the inspection station before reaching the screening station. Therefore, the test products must first reach the inspection station before arriving at the screening station. When the transmission module 12 is transported to the screening station by the conveyor belt 111, the fourth photoelectric sensor 44 can detect the signal and transmit it to the control system. The screening mechanism 2 is activated and begins to grab and classify the test products on the screening station. It should be noted that in order to ensure that the screening mechanism 2 and the detection mechanism 3 can be started simultaneously and operate independently, and to ensure that the screening mechanism 2 and the detection mechanism 3 can operate smoothly, when the screening mechanism 2 and the detection mechanism 3 are started, the conveyor belt 111 is in a stagnant state, ensuring that the transfer modules 12 located at the detection station and the screening station are fixed. At this time, the auxiliary roller 103 continues to rotate, and the transfer module 12 located at the lower fixed conveyor belt 1111 can move from one end of the lower fixed conveyor belt 1111 to the other end.

[0032] The inspection station and the screening station are each provided with a positioning module 13. The positioning module 13 includes a positioning cylinder 131 and a positioning block 132. The positioning modules 13 are symmetrically arranged on both sides of the conveyor belt 111. The positioning cylinder 131 can control the positioning block 132 to move away from or closer to the conveyor belt 111. The conveyor base 121 is provided with a positioning groove 124. The positioning block 132 can cooperate with the positioning groove 124 to fix the conveyor module 11 on the inspection station and / or the screening station. When the third photoelectric sensor 43 and the fourth photoelectric sensor 44 detect that the conveyor module 12 has arrived at the inspection station and / or the screening station, the control system activates the positioning module 13 and fixes the conveyor module 12 on the inspection station and / or the screening station by tightening the positioning modules 13 on both sides of the conveyor belt 111. After the inspection and / or screening is completed, the positioning modules 13 are released, the conveyor belt 111 is started, and the conveyor module 12 located at the inspection station and / or the screening station continues to be transported to the next station.

[0033] The detection mechanism 3 includes a shielding cover 31, a detection assembly 32, a detection lifting cylinder 33, and a PLC controller 34. A detection port 35 is provided at the bottom of the shielding cover 31, and the detection assembly 32 is provided above the detection port 35. When the shielding cover 31 is pressed down by the detection lifting cylinder 33 and the conveying module 12 passes through the detection port and is within the shielding cover 31, the shielding cover 31 and the conveying module 12 cooperate to form a shielded space. To ensure that the shielding cover 31 and the conveying module 12 are completely closed to form a shielded space, electrical contacts are provided on the shielding cover 31 and the conveying module 12. As shown in FIG. 10 , a first electrical contact 51 is provided at the bottom of the shielding cover 31, and a second electrical contact 52 is provided on the conveying module 12. When the shielding cover 31 is completely pressed down by the detection lifting cylinder 33, the first electrical contact 51 and the second electrical contact 52 can be connected. Preferably, a pair of electrical contacts are provided at each of the four corners of the shielding cover 31 and the transmission module 12. When all four corner contacts are connected, the shielding cover is considered fully shielded, and the test object within the shielding cover is protected from interference from external signals. Furthermore, the shielding cover 31 can be equipped with three, four, or even more layers of shielding side panels, depending on actual needs. The thickness of the shielding side panels is also adjusted according to requirements, and each additional layer of shielding side panels can increase the shielding effect by 20-40dB.

[0034] When the shielding cover 31 is completely shielded, the detection component 32 begins to detect the test product on the transmission module 12 inside the shielding cover 31. The detection component 32 includes a pressing head 321 and a key cylinder 322. The PLC controller 34 can control the key cylinder 322 to press one and / or multiple pressing heads 321, and the pressing position or number of times can be adjusted according to the key position that needs to be inspected for the test product. The schematic diagram of the present invention shows that the transmission module 12 is provided with A, B, C, and D detection areas, and each area is correspondingly provided with four pressing heads 321. The pressing heads 321 in the A, B, C, and D detection areas can be configured according to the actual test product to be tested. For example, if test items A1, B1, C1, and D1 are placed in test areas A, B, C, and D, respectively, and only one button in the upper right corner of each of these items needs to be tested, then the PLC controller 34 only needs to set the corresponding pushbuttons 321 in the A, B, C, and D test areas to press down on the corresponding pushbuttons 321 in the upper right corner of each of the test items A1, B1, C1, and D1 to complete the inspection. It should be noted that the size of the transmission module 12 and the number of pushbuttons 321 controlled by the control button cylinder 322 can be adjusted based on the actual product. This embodiment is only an example and other situations will not be repeated.

[0035] When testing the test product, in order to ensure the qualified rate, the PLC controller 34 can also be configured to control the multiple pressing of the pressing head 321. When the pressing head 321 presses the button of the test product, it can be regarded as touching the signal transmitter to transmit the signal. A signal receiver is set in the shielding cover 31. When the shielding cover 31 isolates all external signal sources, if the signal receiver can connect the signal of the signal transmitter, it is regarded as a qualified product. Otherwise, if the signal receiver cannot connect the signal of the signal transmitter, it is regarded as an unqualified product. After the test is completed, the testing mechanism 3 can send the data of the qualified and / or unqualified product, that is, the data of whether the test product of the corresponding A, B, C, D test areas is qualified to the RFID reader 110 at the bottom of the transmission module 12. The RFID reader 110 can store the data. At this time, it can be regarded as that the testing mechanism 3 has completed the test. At this time, the conveyor belt 111 is started again to transport the test product that has completed the test to the screening station for classification.

[0036] When conveyor belt 111 delivers inspected products to the screening station, fourth photoelectric sensor 44 detects the situation, activating positioning module 13 to secure conveyor module 12 to the screening station. The principles of the process are the same as those for the inspection station, so they will not be repeated here. When conveyor module 12 is located at the screening station, RFID reader 110 transmits data back to screening mechanism 2, indicating whether the products in inspection zones A, B, C, and D have passed inspection.

[0037] The screening mechanism 2 includes a mechanical gripper 21, a crossbar 22, a material bin moving assembly 24, and a screening controller 25. The mechanical gripper 21 can move horizontally along the crossbar 22 and can grab or release the test items. The mechanical gripper 21 includes a suction cup 211 and a lifting rod 212. The material bin moving assembly 24 includes a moving belt 241, a qualified bin 242, and a rejected bin 243. The suction cup 211 is located at the bottom of the lifting rod 212. The screening controller 25 can control the vertical extension and retraction of the mechanical gripper 21 and can control the movement of the mechanical gripper 21 to above the qualified bin 242 and / or the rejected bin 243. The screening controller 213 can read data from the RFID reader 110 and, based on this data, control the mechanical gripper 21 to place the test items into the qualified bin 242 or the rejected bin 243.

[0038] The screening mechanism 2 can simultaneously grab the test products that should be inspected in the A, B, C, and D inspection areas, and can also sequentially grab the test products that should be inspected in the A, B, C, and D inspection areas. Simultaneously grabbing the test products that should be inspected in the A, B, C, and D inspection areas means that the screening mechanism 2 grabs all the test products of the conveying module 12 at the same time, and then releases the test products over the qualified box 242 and the waste box 243 in turn according to the feedback data on the RFID reader 110, and puts the qualified test products after inspection into the qualified box 242, and the unqualified test products into the waste box 243. And sequentially grabbing the test products of the A, B, C, and D inspection areas means that the screening mechanism 2 first puts the qualified test products after inspection into the qualified box 242 according to the feedback data on the RFID reader 110, and the mechanical claw 21 returns to the screening station again to grab the unqualified test products and put them into the waste box 243. The two different processes of grabbing are set according to different test products, and can be freely adjusted according to the efficiency of the actual operation. In addition, if Figure 9 As shown, the four suction cups 211 and the lifting rod 212 can be independently controlled by the screening controller 213, that is, the four suction cups 211 can independently complete the suction and / or release work, and the lifting rod 212 can also be lifted and lowered independently. It should be noted that the number of suction cups 211 and the lifting rod 212 is designed according to the size of the transmission module 12. In this embodiment, the transmission module 12 is configured to detect products in the A, B, C, and D detection areas. Therefore, the four suction cups 211 also correspond to the absorption of the detection products in the A, B, C, and D detection areas. The size of the suction cups 211 and the transmission module 12 are determined according to the size of the detection product, and they are both replaceable parts on this detection machine.

[0039] The qualified bin 242 and the reject bin 243 are placed on a moving belt 241, which includes a first moving belt 2411 and a second moving belt 2412. The qualified bin 242 is placed on the first moving belt 2411, and the reject bin 243 is placed on the second moving belt 2412. The first moving belt 2411 and the second moving belt 2412 are driven by two different motors. In actual testing, the test objects are usually rectangular in shape and can be neatly placed in the qualified bin 242 and / or the reject bin 243 in sequence. The moving belt 241 can independently control the movement of the qualified bin 242 and the reject bin 243. The control system can control the movement of the moving belt 241 and the mechanical claw 21 according to the size of the test objects. During the process of grabbing and releasing the test products, data are fed back to the control system. Therefore, the control system can adjust the moving position of the mechanical claw 21 and the moving belt 241 to drive the moving position of the qualified box 242 and / or the waste box 243 based on this data, thereby ensuring that the test products are neatly stacked in the qualified box 242 and / or the waste box 243 in sequence.

[0040] In addition, in order to move the mechanical claw 21 more accurately, a drag chain 23 is further provided on the frame 100. The drag chain 23 and the mechanical claw 21 are fixedly linked. The drag chain 23 can limit the moving position of the mechanical claw 21 on the beam 22.

[0041] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

Claims

1. An RF detection machine, comprising a frame (100), characterized in that: A conveying mechanism (1), a screening mechanism (2), a detection mechanism (3) and a control system are provided on the frame (100). The conveying mechanism (1) includes a conveying module (11), a transmission module (12) and a positioning module (13). An RFID reader (110) is provided on the conveying module (11). The transmission module (12) can convey the conveying module (11) to the detection mechanism (3) and / or the screening mechanism (2). The positioning module (13) can fix the conveying module (11) on the detection station and / or the screening station. The detection mechanism (3) can detect the detection products in the conveying module (11) and write the detection results into the RFID reader (110). The screening mechanism (2) can read the data in the RFID reader (110) and classify the detection products according to the data.

2. The RF detection machine according to claim 1, characterized in that: The detection mechanism (3) includes a shielding cover (31), a detection assembly (32), a detection lifting cylinder (33) and a PLC controller (34); a detection port (35) is provided at the bottom of the shielding cover (31), and the detection assembly (32) is provided above the detection port (35); when the shielding cover (31) is pressed down by the detection lifting cylinder (33) and the transmission module (12) passes through the detection port and is located in the shielding cover (31), the shielding cover (31) and the transmission module (12) cooperate to form a shielded space.

3. The RF detection machine according to claim 2, characterized in that: The detection component (32) includes a pressing head (321) and a key cylinder (322), and the PLC controller (34) can control the key cylinder (322) to press one and / or multiple pressing heads (321).

4. The RF detection machine according to claim 1, characterized in that: The conveying module (11) includes a conveying belt (111), the transmission module (12) is arranged on the conveying belt (111), the transmission module (12) includes a conveying base (121) and a conveying box (122), one and / or a plurality of placement positions (123) for placing test items are provided in the conveying box (122), and the RFID reader (110) is arranged at the bottom of the conveying base (121).

5. The RF detection machine according to claim 4, characterized in that: The conveying base (121) is configured to be slidably connected to the conveying belt (111), and the frame (100) is further provided with an auxiliary roller (103), which can cooperate with the conveying base (121) to control the sliding speed of the conveying base (121) relative to the conveying belt (111).

6. The RF detection machine according to claim 4, characterized in that: The positioning module (13) includes a positioning cylinder (131) and a positioning block (132). The positioning modules (13) are symmetrically arranged on both sides of the conveyor belt (111). The positioning cylinder (131) can control the positioning block (132) to move away from or close to the conveyor belt (111). A positioning groove (124) is provided on the conveying base (121). The positioning block (132) can cooperate with the positioning groove (124) to fix the conveying module (11) on the detection station and / or the screening station.

7. The RF detection machine according to claim 1, characterized in that: The screening mechanism (2) comprises a mechanical claw (21), a crossbeam (22), a material box moving assembly (24) and a screening controller (25); the mechanical claw (21) can move horizontally along the crossbeam (22) and can grasp or release the inspection object.

8. The RF detection machine according to claim 1, characterized in that: The mechanical claw (21) includes a suction cup (211) and a lifting rod (212); the material box moving assembly (24) includes a moving belt (241), a qualified box (242) and a waste box (243); the suction cup (211) is arranged at the bottom of the lifting rod (212); and the screening controller (25) can control the extension and retraction of the mechanical claw (21) in the vertical direction and can control the mechanical claw (21) to move above the qualified box (242) and / or the waste box (243).

9. The RF detection machine according to claim 8, characterized in that: The screening controller (213) can read data on the RFID reader (110) and control the mechanical claw (21) to place the inspected products into a qualified box (242) or a reject box (243) according to the data.

10. The RF detection machine according to claim 1, characterized in that: The frame (100) is further provided with a photoelectric sensor, which is arranged at the feed port (104), the inspection station, and the screening station, and is used to detect whether the inspection product is in place.

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