Anti-counterfeiting detection device and anti-counterfeiting layer

Abstract

The invention provides an anti-counterfeiting detection device and an anti-counterfeiting layer, and belongs to the technical field of anti-counterfeiting detection.The anti-counterfeiting detection device comprises a conveying mechanism, a supporting base is installed at the top of the conveying mechanism, a centering mechanism is arranged at the top of the conveying mechanism, and the centering mechanism comprises a first sliding rail and a bearing base; the first sliding rail is installed on the inner top wall of the supporting base, the surface of the first sliding rail is slidably sleeved with two first sliding bases, and the first sliding bases are arranged to be in a [shape. By arranging the centering mechanism, two first sliding seats are moved in the opposite directions at the same time until the distance between rollers on two bearing seats is just enough for a packaging box to pass through, the packaging box is moved rightwards through transportation of the conveying mechanism, and the position of the packaging box on the conveying mechanism is automatically corrected through rolling friction between the packaging box and the rollers; the packaging box is located in the middle of the conveying mechanism, and the situation that the anti-fake mark is not in the shooting range of the camera due to position deviation of the packaging box is avoided.

Description

Technical Field

[0001] This invention relates to the field of anti-counterfeiting detection technology, specifically to an anti-counterfeiting detection device and an anti-counterfeiting layer. Background Technology

[0002] Anti-counterfeiting detection is a systematic measure that uses technical means to identify the authenticity of products, certificates, or identities and prevent counterfeiting and alteration. Its core objective is to verify authenticity through unique identifiers, encrypted information, or dynamic features, thereby protecting consumer rights and market order. Anti-counterfeiting labels need to be tested before products leave the factory.

[0003] In existing technologies, packaged products are usually transported using conveyor mechanisms. However, products are typically placed manually on these mechanisms, which makes it difficult to guarantee precise placement. This can lead to deviations in the position of anti-counterfeiting labels on the packaging, making it impossible for detection machines to accurately identify them. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Therefore, the purpose of this invention is to provide an anti-counterfeiting detection device and an anti-counterfeiting layer to solve the problems mentioned in the background art.

[0006] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: An anti-counterfeiting detection device, comprising: Conveying mechanism; A support structure is installed on top of the conveying mechanism; A centering and correction mechanism is located above the conveying mechanism; The centering correction mechanism includes a guide assembly arranged laterally, two movable seats symmetrically arranged on the guide assembly, and a correction component connected to the bottom of the movable seats. The correction component is used to contact the object to be tested on the conveying mechanism to correct its position.

[0007] In a preferred embodiment of the anti-counterfeiting detection device of the present invention, the guide component includes a first slide rail installed on the inner top wall of the support structure, the movable seat is a first slide block slidably sleeved on the surface of the first slide rail, the first slide block is U-shaped and two first slide blocks are mirror images of each other, the correction component includes a bearing seat fixed to the bottom of the first slide block by a connecting rod, and a plurality of rollers arranged in a linear array are rotatably mounted on the top of the bearing seat.

[0008] As a preferred embodiment of the anti-counterfeiting detection device of the present invention, a drive turntable is rotatably installed on the inner top wall of the support structure, and two symmetrical eccentric shafts are provided at the bottom of the drive turntable. A connecting rod is rotatably sleeved on the surface of the eccentric shaft, and the other end of the connecting rod is rotatably connected to the inner bottom wall of the first slide. A drive motor is installed on the top of the support structure, and the output end of the drive motor is connected to the top of the drive turntable.

[0009] As a preferred embodiment of the anti-counterfeiting detection device of the present invention, the bottom of the support structure is provided with a surface cleaning mechanism. The surface cleaning mechanism includes a second slide rail installed on the inner side wall of the support structure, a second slide block slidably sleeved on the second slide rail, and a cleaning component installed on the bottom of the second slide block. The cleaning component includes a first cleaning brush and second cleaning brushes disposed on both sides thereon.

[0010] In a preferred embodiment of the anti-counterfeiting detection device of the present invention, a first eccentric rod is rotatably mounted on the inner top wall of the support structure, a second eccentric rod is rotatably connected to the bottom of the first eccentric rod, the other end of the second eccentric rod is rotatably connected to the top of the second slide block, a second drive motor is mounted on the top of the support structure, and the output end of the second drive motor is connected to the top of the first eccentric rod.

[0011] As a preferred embodiment of the anti-counterfeiting detection device of the present invention, it further includes a cleaning area adjustment mechanism, wherein the cleaning area adjustment mechanism includes a through groove formed on the handle of the first cleaning brush, and a slider is provided on the side of the second cleaning brush near the first cleaning brush, the slider being slidably fitted into the groove.

[0012] As a preferred embodiment of the anti-counterfeiting detection device of the present invention, a bidirectional lead screw is rotatably installed in the slide groove, and two sliders are respectively threaded onto the two ends of the bidirectional lead screw. A fixing frame is provided on the inner wall of the slide groove, and a transmission rod is rotatably installed in the fixing frame. A first bevel gear is sleeved on the surface of the transmission rod, and a second bevel gear that meshes with the first bevel gear is sleeved on the surface of the bidirectional lead screw.

[0013] As a preferred embodiment of the anti-counterfeiting detection device of the present invention, the upper wall of the support structure is provided with a mounting frame, a spline sleeve is rotatably sleeved in the mounting frame, the end of the transmission rod is provided with a spline shaft, and the spline shaft is slidably sleeved in the spline sleeve. The inner top wall of the support structure is rotatably mounted with a hanging rod, the surface of which is fitted with a third bevel gear, and the surface of the spline sleeve is fitted with a fourth bevel gear that meshes with the third bevel gear.

[0014] As a preferred embodiment of the anti-counterfeiting detection device of the present invention, a drive rod is coaxially provided at the bottom of the drive turntable, a gear ring is sleeved on the surface of the drive rod, and a drive gear that meshes with the gear ring is sleeved on the surface of the mounting rod.

[0015] An anti-counterfeiting layer includes a transparent film coated on the surface of a substrate, wherein the transparent film has several reflective layers inside.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting a centering mechanism, the two first slides are moved simultaneously in opposite directions until the distance between the rollers on the two support seats is just enough for the packaging box to pass through. The packaging box is then moved to the right by the conveyor mechanism. The rolling friction between the packaging box and the rollers automatically corrects its position on the conveyor mechanism, so that the packaging box is in the middle position of the conveyor mechanism, avoiding positional deviation of the packaging box that would cause the anti-counterfeiting mark to be outside the shooting range of the camera.

[0017] 2. By setting up a surface cleaning mechanism, when the packaging box passes under the first and second cleaning brushes, the soft bristles brush over the top of the packaging box to clean the top of the packaging box, preventing dust from accumulating on the surface of the transparent film on the packaging box, which would make it difficult to identify the anti-counterfeiting label inside. In addition, the friction between the conveying mechanism and the packaging box prevents the packaging box from being blocked by the soft bristles and causing the transportation to stop.

[0018] 3. By setting up a cleaning area adjustment mechanism, when the area of ​​the packaging box is relatively small, the second cleaning brushes on both sides are moved in opposite directions at the same time, thereby increasing the overlap between the second cleaning brush and the first cleaning brush. The overlap between the first cleaning brush and the second cleaning brush can improve the cleaning effect of some parts of the packaging box, thus avoiding the situation where some brush bristles are idle when the size of the packaging box is small and the cleaning area remains unchanged. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall three-dimensional structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure from the right side is provided for an embodiment of the present invention; Figure 3 A partial cross-sectional view of the support base is provided for embodiments of the present invention; Figure 4A left-side sectional view of the support base portion is provided for an embodiment of the present invention; Figure 5 A schematic diagram of the gear ring and drive gear is provided for embodiments of the present invention; Figure 6 A schematic diagram of the roller structure is provided for embodiments of the present invention; Figure 7 A schematic diagram of the structure of the first cleaning brush and the second cleaning brush is provided for embodiments of the present invention; Figure 8 An exploded view of the slider and the groove is provided for embodiments of the present invention.

[0020] In the diagram: 1. Conveying mechanism; 2. Support base; 301. First slide rail; 302. First slide block; 303. Connecting rod; 304. Bearing base; 305. Roller; 306. Turntable; 307. Eccentric shaft; 308. Connecting rod; 309. First motor; 401. Second slide rail; 402. Second slide block; 403. First cleaning brush; 404. Second cleaning brush; 405. First eccentric rod; 406. Second eccentric rod ; 407, Second motor; 501, Slide groove; 502, Slider; 503, Double-acting lead screw; 504, Fixing frame; 505, Transmission rod; 506, First bevel gear; 507, Second bevel gear; 508, Mounting frame; 509, Spline sleeve; 510, Spline shaft; 511, Mounting rod; 512, Third bevel gear; 513, Fourth bevel gear; 514, Drive rod; 515, Gear ring; 516, Drive gear. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1-8This invention provides a technical solution: an anti-counterfeiting detection device includes a conveying mechanism 1, a support structure 2 installed on the top of the conveying mechanism 1, and a centering correction mechanism located above the conveying mechanism 1. The centering correction mechanism includes a guide component arranged laterally, two movable seats symmetrically arranged on the guide component, and a correction component connected to the bottom of the movable seats. The correction component is used to contact the object to be detected on the conveying mechanism 1 to correct its position. The guide component includes a first slide rail 301 installed on the inner top wall of the support structure 2. The movable seats are first slide blocks 302 slidably sleeved on the surface of the first slide rail 301. The first slide blocks 302 are U-shaped and the two first slide blocks 302 are mirror images of each other. The correction component includes a bearing seat 304 fixed to the bottom of the first slide block 302 by a connecting rod 303. A plurality of rollers 305 arranged in a linear array are rotatably mounted on the top of the bearing seat 304. An anti-counterfeiting mark detector is provided on the inner top wall of the support seat 2 for... To detect the anti-counterfeiting label, the sidewall of roller 305 is located outside the support seat 304. By setting a centering mechanism, the two first slides 302 are moved simultaneously in opposite directions. With the cooperation of connecting rod 303, the two support seats 304 are moved simultaneously in opposite directions until the distance between the rollers 305 on the two support seats 304 is just enough for the packaging box to pass through. The packaging box is then placed on the conveyor mechanism 1 and moved to the right by the conveyor mechanism 1. After the packaging box contacts the rollers 305 on both sides, it automatically corrects its position on the conveyor mechanism 1 through the rolling friction between the packaging box and the rollers 305, so that the packaging box is located in the middle position of the conveyor mechanism 1. After cleaning the top of the packaging box, the anti-counterfeiting label on the packaging box is identified and detected by the camera on the anti-counterfeiting label detector. This avoids the anti-counterfeiting label being out of the camera's field of view due to positional deviation of the packaging box. It is applicable to packaging boxes of different widths.

[0023] Reference Figures 1-8 A turntable 306 is rotatably mounted on the inner top wall of the support base 2. Two eccentric shafts 307 are fixedly mounted on the bottom of the turntable 306. The eccentric shafts 307 are eccentrically positioned relative to the turntable 306 and are symmetrically arranged. A connecting rod 308 is rotatably sleeved on the surface of the eccentric shaft 307. The other end of the connecting rod 308 is rotatably connected to the inner bottom wall of the first slide block 302. A first motor 309 is mounted on the top of the support base 2. The first motor 309 and the turntable 306 are coaxially arranged. The output end is connected to the top of the turntable 306. By setting the turntable 306, the user starts the first motor 309, which drives the turntable 306 to rotate. When the turntable 306 rotates, it drives the two eccentric shafts 307 at the bottom to rotate simultaneously. Since one end of the connecting rod 308 is rotated and sleeved on the surface of the eccentric shaft 307, and the other end of the connecting rod 308 is rotatably connected to the first slide block 302, under the limiting cooperation of the first slide rail 301, the two first slide blocks 302 move simultaneously in opposite directions. Reference Figures 1-8 The bottom of the support base 2 is provided with a surface cleaning mechanism, which includes a second slide rail 401. The second slide rail 401 is installed on the inner side wall of the support base 2. A second slide block 402 is slidably sleeved on the surface of the second slide rail 401. A first cleaning brush 403 and two second cleaning brushes 404 are installed at the bottom of the second slide block 402. The two second cleaning brushes 404 are located on both sides of the first cleaning brush 403 and are arranged in a mirror image along the central axis of the first cleaning brush 403. By setting up the surface cleaning mechanism, the packaging box is transported by the conveying mechanism 1. When moving from bottom to right, as the packaging box passes under the first cleaning brush 403 and the second cleaning brush 404, since both the first cleaning brush 403 and the second cleaning brush 404 are equipped with soft bristles, and the height of the soft bristles is lower than the height of the top of the packaging box, the soft bristles brush over the top of the packaging box to clean the top of the packaging box, preventing dust from accumulating on the surface of the transparent film on the packaging box, which would make it difficult to identify the anti-counterfeiting label inside. In addition, the friction between the conveying mechanism 1 and the packaging box prevents the packaging box from being blocked by the soft bristles and causing the transportation to stop. Reference Figures 1-8 A first eccentric rod 405 is rotatably mounted on the inner top wall of the support base 2. A second eccentric rod 406 is rotatably mounted on the bottom of the first eccentric rod 405. The other end of the second eccentric rod 406 is rotatably connected to the top of the second slide block 402. A second motor 407 is mounted on the top of the support base 2. The output end of the second motor 407 is connected to the top of the first eccentric rod 405. By setting the first eccentric rod 405 and the second eccentric rod 406, the user starts the second motor 407, which drives the first eccentric rod 405 to rotate. Since one end of the second eccentric rod 406 is rotatably connected to the first eccentric rod 405, and the other end of the second eccentric rod 406 is rotatably connected to the second slide block 402, under the limiting cooperation of the second slide rail 401, the second slide block 402 reciprocates horizontally, thereby increasing the cleaning time of the first cleaning brush 403 and the second cleaning brush 404 on the surface of the packaging box and effectively improving the cleaning effect. Reference Figures 1-8The support base 2 is equipped with a cleaning area adjustment mechanism, which includes a slide groove 501. The slide groove 501 is opened through the handle of the first cleaning brush 403. The two second cleaning brushes 404 are integrally formed with sliders 502 on the side near the first cleaning brush 403. The sliders 502 are slidably sleeved inside the slide groove 501. By setting the cleaning area adjustment mechanism, when the area of ​​the packaging box is relatively small, the two sliders 502 are slid inside the slide groove 501, so that the two sliders 502 move in opposite directions at the same time. This causes the second cleaning brushes 404 on both sides to move in opposite directions at the same time, thereby increasing the overlap between the second cleaning brushes 404 and the first cleaning brush 403. The overlap between the first cleaning brush 403 and the second cleaning brush 404 can improve the cleaning effect of some parts of the packaging box, thereby avoiding the situation where the cleaning area remains unchanged when the size of the packaging box is small, resulting in some brush bristles being idle. Reference Figures 1-8 A bidirectional lead screw 503 is rotatably mounted inside the slide groove 501. The threads at both ends of the bidirectional lead screw 503 are in opposite directions. Two sliders 502 are respectively threaded onto both ends of the bidirectional lead screw 503. A fixing frame 504 is fixedly mounted on the inner wall of the slide groove 501. A transmission rod 505 is rotatably mounted inside the fixing frame 504. A first bevel gear 506 is fixedly mounted on the surface of the transmission rod 505, and a second bevel gear 507 is fixedly mounted on the surface of the bidirectional lead screw 503. The first bevel gear 506 and the second bevel gear 507 mesh with each other. By setting the bidirectional lead screw 503, when the first bevel gear 506 rotates, the meshing connection between the first bevel gear 506 and the second bevel gear 507 causes the second bevel gear 507 to rotate, thereby driving the bidirectional lead screw 503 to rotate. Through the threaded connection between the bidirectional lead screw 503 and the two sliders 502, and the limiting cooperation of the slide groove 501, the two sliders 502 move in opposite directions. Reference Figures 1-8A mounting bracket 508 is fixedly installed on the inner top wall of the support base 2. A spline sleeve 509 is rotatably fitted inside the mounting bracket 508. A spline shaft 510 is fixedly installed on the left side of the transmission rod 505. The spline shaft 510 is slidably fitted inside the spline sleeve 509. The teeth of the spline shaft 510 and the spline sleeve 509 mesh with each other. A mounting rod 511 is rotatably installed on the inner top wall of the support base 2. A third bevel gear 512 is fixedly fitted on the surface of the mounting rod 511. A fourth bevel gear 513 is fixedly fitted on the surface of the spline sleeve 509. The third bevel gear 512 and the fourth bevel gear 513 mesh with each other. A drive rod 514 is coaxially fixedly installed on the bottom of the turntable 306. A gear ring 515 is fixedly fitted on the surface of the drive rod 514. A gear ring 515 is fixedly fitted on the surface of the mounting rod 511. There is a drive gear 516, and a gear ring 515 meshes with the drive gear 516. By setting a spline shaft 510 and a spline sleeve 509, when the turntable 306 rotates and the two support seats 304 adapt to the width of the packaging box, the drive rod 514 drives the gear ring 515 to rotate together. Through the meshing connection between the gear ring 515 and the drive gear 516, the drive gear 516 rotates, which drives the hanging rod 511 and the third bevel gear 512 to rotate simultaneously. Through the meshing connection between the third bevel gear 512 and the fourth bevel gear 513, the fourth bevel gear 513 drives the spline sleeve 509 to rotate. Through the meshing of the spline sleeve 509 and the spline shaft 510, the spline shaft 510 drives the first bevel gear 506 to rotate. An anti-counterfeiting layer is prepared by the aforementioned anti-counterfeiting detection device. The anti-counterfeiting layer includes a transparent film coated on the surface of a substrate, and a plurality of reflective layers are disposed inside the transparent film.

[0024] Specifically, the anti-counterfeiting detection device operates as follows: In use, the user starts the first motor 309, which drives the turntable 306 to rotate. The rotation of the turntable 306 causes the two eccentric shafts 307 at the bottom to rotate simultaneously. Since one end of the connecting rod 308 is rotatably sleeved on the surface of the eccentric shaft 307, and the other end of the connecting rod 308 is rotatably connected to the first slide block 302, under the limiting cooperation of the first slide rail 301, the two first slide blocks 302 move simultaneously in opposite directions. Through the cooperation of the connecting rod 303, the two bearing seats 304 move simultaneously in opposite directions until the distance between the rollers 305 on the two bearing seats 304 is just enough for the packaging box to pass through. Simultaneously, the drive rod 514... The gear ring 515 rotates together with the drive gear 516 through the meshing connection between the gear ring 515 and the drive gear 516. This rotation of the drive gear 516 drives the mounting rod 511 and the third bevel gear 512 to rotate simultaneously. The meshing connection between the third bevel gear 512 and the fourth bevel gear 513 causes the fourth bevel gear 513 to rotate the spline sleeve 509. The meshing between the teeth of the spline sleeve 509 and the spline shaft 510 causes the spline shaft 510 to rotate the first bevel gear 506. The meshing connection between the first bevel gear 506 and the second bevel gear 507 causes the second bevel gear 507 to rotate, thereby driving the bidirectional lead screw 503 to rotate. The threaded connection between the bidirectional lead screw 503 and the two sliders 502, along with the limiting engagement of the slide groove 501, causes the two sliders 502 to move in opposite directions, thereby increasing the overlap between the second cleaning brush 404 and the first cleaning brush 403. The user then activates the second motor 407, causing the first eccentric rod 405 to rotate. Since one end of the second eccentric rod 406 is rotatably connected to the first eccentric rod 405, and the other end of the second eccentric rod 406 is rotatably connected to the second slide block 402, the limiting engagement of the second slide rail 401 causes the second slide block 402 to reciprocate horizontally, placing the packaging box onto the conveyor mechanism 1. The packaging box moves to the right via the conveyor mechanism 1. After contacting the rollers 305 on both sides, it automatically corrects its position on the conveyor mechanism 1 through rolling friction with the rollers 305, so that the packaging box is located in the middle position of the conveyor mechanism 1. When the packaging box passes under the first cleaning brush 403 and the second cleaning brush 404, since the first cleaning brush 403 and the second cleaning brush 404 are equipped with soft bristles, the height of the soft bristles is lower than the height of the top of the packaging box, so that the soft bristles brush over the top of the packaging box to clean the top of the packaging box. Finally, the anti-counterfeiting mark on the packaging box is identified and detected by the camera on the anti-counterfeiting mark detector.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An anti-counterfeiting detection device, characterized in that: The utility model relates to a kind of centering mechanism and surface cleaning mechanism of conveying mechanism, comprising: Conveying mechanism (1); Support structure (2) is installed on the top of the conveying mechanism (1); Centering mechanism is set above the conveying mechanism (1); Wherein, the centering mechanism includes the guide assembly arranged along the transverse direction, two movable seat bodies symmetrically arranged on the guide assembly, and the correction member connected to the bottom of the movable seat body, the correction member is used to contact with the object to be detected on the conveying mechanism (1) to correct its position.

2. A security device according to claim 1, wherein The guide assembly includes a first slide rail (301) mounted on the inner top wall of the support structure (2), the movable seat body is a first sliding seat (302) slidingly sleeved on the surface of the first slide rail (301), the first sliding seat (302) is in the shape of a Chinese character and the two first sliding seats (302) are mirror images, the correction member includes a carrier (304) fixed to the bottom of the first sliding seat (302) by a connecting rod (303), and a plurality of rollers (305) in linear array are rotatably mounted on the top of the carrier (304).

3. A security device according to claim 2, wherein The inner top wall of the support structure (2) is rotatably mounted with a driving turntable (306), the bottom of the driving turntable (306) is provided with two symmetric eccentric shafts (307), the surface of the eccentric shaft (307) is rotatably sleeved with a connecting rod (308), the other end of the connecting rod (308) is rotatably connected with the inner bottom wall of the first sliding seat (302), and the top of the driving turntable (306) is connected with the output end of a driving motor (309) mounted on the top of the support structure (2).

4. A security device according to claim 3, wherein The bottom of the support structure (2) is provided with a surface cleaning mechanism, the surface cleaning mechanism includes a second slide rail (401) mounted on the inner side wall of the support structure (2), a second sliding seat (402) slidingly sleeved on the second slide rail (401), and a cleaning assembly mounted on the bottom of the second sliding seat (402), the cleaning assembly includes a first cleaning brush (403) and a second cleaning brush (404) separately arranged on both sides thereof.

5. A security device according to claim 4, wherein The inner top wall of the support structure (2) is rotatably mounted with a first eccentric rod (405), the bottom of the first eccentric rod (405) is rotatably connected with a second eccentric rod (406), the other end of the second eccentric rod (406) is rotatably connected with the top of the second sliding seat (402), and the top of the support structure (2) is mounted with a second driving motor (407), and the output end of the second driving motor (407) is connected with the top of the first eccentric rod (405).

6. A security device according to claim 5, wherein It also includes a cleaning area adjusting mechanism, the cleaning area adjusting mechanism includes a through sliding groove (501) opened on the brush handle of the first cleaning brush (403), and the second cleaning brush (404) is provided with a sliding block (502) close to the side of the first cleaning brush (403), and the sliding block (502) is slidingly sleeved in the sliding groove (501).

7. A security device according to claim 6, wherein The chute (501) is internally rotatably provided with a bidirectional screw rod (503), two sliding blocks (502) are respectively threadedly sleeved at two ends of the bidirectional screw rod (503), the inner wall of the chute (501) is provided with a fixing frame (504), the fixing frame (504) is internally rotatably provided with a transmission rod (505), the transmission rod (505) is externally provided with a first bevel gear (506), and the bidirectional screw rod (503) is externally provided with a second bevel gear (507) engaged with the first bevel gear (506).

8. A security device according to claim 7, wherein The inner top wall of the support structure (2) is provided with a mounting frame (508), the mounting frame (508) is internally rotatably provided with a spline sleeve (509), the end of the transmission rod (505) is provided with a spline shaft (510), and the spline shaft (510) is slidably sleeved in the spline sleeve (509). The inner top wall of the support structure (2) is rotatably provided with a mounting rod (511), the mounting rod (511) is externally provided with a third bevel gear (512), and the spline sleeve (509) is externally provided with a fourth bevel gear (513) engaged with the third bevel gear (512).

9. A security device according to claim 8, wherein The bottom of the driving turntable (306) is coaxially provided with a driving rod (514), the surface of the driving rod (514) is externally provided with a gear ring (515), the surface of the mounting rod (511) is externally provided with a driving gear (516) engaged with the gear ring (515).

10. A security layer suitable for use in a security detection device according to any one of claims 1 to 9, characterised in that: The transparent film plated on the surface of the base material is internally provided with a plurality of reflection layers.

Images