Anti-counterfeiting ink printing defect detection device

Abstract

The invention relates to the technical field of anti-counterfeiting detection, and discloses an anti-counterfeiting ink printing defect detection device which comprises a rack, a conveying belt, a vertical driving mechanism, a detection mechanism and a clamping mechanism, the conveying belt is installed on the rack and used for conveying a packaging box, the detection mechanism is connected to the rack and located above the conveying belt, and the vertical driving mechanism is used for driving the detection mechanism to rotate. When the conveying belt conveys a packaging box to the position below the detection mechanism, the clamping mechanism clamps the packaging box, and an anti-fake mark is printed at the corner of the packaging box. The driving end of the vertical driving mechanism is connected with a shielding assembly; a composite motion structure that the annular driving assembly is matched with the rotating assembly is adopted, a plurality of adjacent surfaces related to the anti-counterfeiting mark at the corner can be completely covered, a visual angle blind area is thoroughly eliminated, and it is ensured that printing defects of all angles of the anti-counterfeiting mark are completely detected; therefore, the interference of external ambient light is effectively isolated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of anti-counterfeiting detection, and particularly relates to an anti-counterfeiting ink printing defect detection device. BACKGROUND

[0002] In the field of commodity anti-counterfeiting, the anti-counterfeiting ink printing anti-counterfeiting mark is an important means to protect the authenticity of commodities and is widely used in the anti-counterfeiting identification of various packaging boxes, certificates and other products. Among them, the design of printing the anti-counterfeiting mark at the corner of the packaging box can improve the anti-counterfeiting effect by increasing the difficulty of counterfeiting, but also puts forward higher requirements for the detection of its printing quality.

[0003] At present, the detection of anti-counterfeiting ink printing defects mainly relies on manual visual inspection or traditional automatic detection equipment. The manual detection method not only has low efficiency, but is also affected by subjective factors such as the experience and fatigue of the detector, and is prone to missed detection and false detection, which is difficult to meet the quality control requirements of large-scale production.

[0004] Although the traditional automatic detection equipment improves the detection efficiency to some extent, there are still many limitations in the detection of anti-counterfeiting marks at the corner. 1) The anti-counterfeiting mark is usually printed or pasted on the carrier such as product packaging, label, etc., and there may be complex patterns, characters, textures or colors around it. These background elements may be similar to the defects (such as scratches, missing printing, deformation, etc.) of the anti-counterfeiting mark in visual features (such as color, shape, gray scale), leading to misjudgment of the detection mechanism.

[0005] 2) The anti-counterfeiting mark at the corner usually involves multiple adjacent surfaces of the packaging box. The traditional fixed-angle detection camera is difficult to achieve full coverage, and is easy to miss the defects hidden in the corner edge due to the visual angle blind area.

[0006] 3) Different types of anti-counterfeiting ink (such as fluorescent ink, temperature-changing ink, etc.) need to match specific wavelength light sources or filtering conditions to highlight defects. The filtering component of the traditional equipment is fixed and cannot be flexibly switched to adapt to diversified detection needs, and the versatility is poor.

[0007] These problems lead to the fact that the existing detection technology has low precision and weak adaptability in identifying the defects of the anti-counterfeiting mark at the corner, and it is difficult to meet the strict requirements of high-end anti-counterfeiting packaging on printing quality. SUMMARY

[0008] The purpose of the present application is to provide a detection device with simple structure and reasonable design to solve the above problems.

[0009] The present application achieves the above-mentioned purposes through the following technical solutions: The application provides an anti-fake ink printing defect detection device, which comprises a rack, a conveying belt, a vertical driving mechanism, a detection mechanism and a clamping mechanism, the conveying belt is installed on the rack and is used for conveying a packaging box, the detection mechanism is connected to the rack and is located above the conveying belt, when the conveying belt conveys the packaging box to below the detection mechanism, the clamping mechanism clamps the packaging box, and an anti-fake mark is printed on a corner of the packaging box. The driving end of the vertical driving mechanism is connected with a shielding assembly, the shielding assembly comprises a shielding cover, a detection opening is reserved on the surface of the shielding cover, the detection opening corresponds to the anti-fake mark, the vertical driving mechanism drives the shielding cover to shield the surrounding part of the packaging box on which the anti-fake mark is printed, and simultaneously drives the detection mechanism to be close to the anti-fake mark. The detection mechanism comprises a ring-shaped driving assembly, a rotating assembly and a detection camera, the ring-shaped driving assembly drives the rotating assembly to rotate around the packaging box, the rotating assembly drives the detection camera to rotate around the anti-fake mark, and the detection camera detects the anti-fake mark.

[0010] As a further optimization scheme of the application, the clamping mechanism comprises a fixed plate, a first driving assembly and two groups of symmetrically arranged clamping plates, the fixed plate is connected to the rack, one end of the two groups of clamping plates away from the packaging box is rotationally connected to the surface of the fixed plate, and the first driving assembly drives the two groups of clamping plates to rotate to clamp the packaging box.

[0011] As a further optimization scheme of the application, the first driving assembly comprises a driving piece one, a screw rod and a limiting strip, the driving piece one is connected to the fixed plate, one end of the screw rod is fixedly connected to the driving end of the driving piece one, the other end is fixedly connected to the fixed plate, the limiting strip is slidingly connected to the surface of the fixed plate and is threadedly connected to the surface of the screw rod, the surfaces of the two groups of clamping plates are fixedly connected to limiting blocks, two groups of limiting grooves are formed in the surface of the limiting strip, and the two groups of limiting blocks are slidingly connected in the limiting grooves.

[0012] As a further optimization scheme of the application, the driving end of the vertical driving mechanism is fixedly connected with a mounting plate, and the shielding assembly and the ring-shaped driving assembly are both mounted on the bottom surface of the mounting plate.

[0013] As a further optimization scheme of the application, the shielding assembly further comprises a telescopic rod and a pressing piece, the shielding cover comprises a top plate and side plates corresponding to the side surface of the packaging box, the top plate and the plurality of side plates are dispersedly arranged, the plurality of side plates are connected through the pressing piece, the upper end of the telescopic rod is connected to the bottom surface of the mounting plate, the top plate is connected to the lower end of the telescopic rod, when the vertical driving mechanism drives the top plate to press the top surface of the packaging box, the telescopic rod cooperates with the pressing piece to make the plurality of side plates adhere to the surface of the packaging box.

[0014] As a further optimization scheme of the present application, the telescopic rod comprises a fixed rod and a movable rod, the upper end of the movable rod is slidingly connected in the fixed rod, one end of the movable rod in the fixed rod is connected with a compression spring, the end of the compression spring away from the movable rod is connected with the inner wall of the fixed rod, the upper end of the fixed rod is fixedly connected with the bottom surface of the mounting plate, and the top plate is connected with the lower end of the movable rod. The surface of each group of side plates is connected with a pressing member, the pressing member comprises a first connecting rod, a second connecting rod and a mounting strip, the mounting strip is connected with the surface of the side plate, one end of the second connecting rod is rotatably connected with the surface of the mounting strip, and the other end is rotatably connected with the surface of the movable rod, one end of the first connecting rod is rotatably connected with the surface of the fixed rod, and the other end is rotatably connected with the surface of the second connecting rod.

[0015] As a further optimization scheme of the present application, the annular driving assembly comprises a driving member two, a ring sleeve and an inner gear ring, the ring sleeve is fixedly connected with the bottom surface of the mounting plate, the inner gear ring is rotatably connected in the ring sleeve, the driving member two is connected with the upper surface of the mounting plate, the driving end of the driving member two penetrates through the mounting plate and is connected with a driving gear, the driving gear is engaged with the inner gear ring, and the rotating assembly is connected with the surface of the inner gear ring.

[0016] As a further optimization scheme of the present application, the rotating assembly comprises two groups of driving members three, a supporting frame and two groups of vertically staggered rotating plates, the two groups of rotating plates are in a whole semispherical shape, the two groups of driving members three are connected with the supporting frame, one end of the two groups of rotating plates is fixedly connected with the driving end of the two groups of driving members three respectively, the other end of the two groups of rotating plates is rotatably connected with the supporting frame respectively, the surface of the two groups of rotating plates is provided with a sliding groove, the detection camera penetrates through the two groups of sliding grooves and slides along the inner wall of the two groups of sliding grooves.

[0017] As a further optimization scheme of the present application, the outer surface of the detection camera is connected with two groups of circular plates, the two groups of rotating plates are clamped between the two groups of circular plates, and a replacement assembly is arranged on the circular plate close to the anti-fake logo, which is used for replacing the camera filter.

[0018] As a further optimization scheme of the present application, the replacement assembly comprises a driving member four, a mounting block and an arc-shaped plate, the mounting block is connected with the circular plate close to the anti-fake logo, the surface of the mounting block is provided with a clamping groove, the arc-shaped plate is slidingly connected in the clamping groove, one side edge of the arc-shaped plate in the clamping groove is connected with a rack, the driving member four is connected with the surface of the mounting block, the surface of the mounting block is provided with a through groove, the driving end of the driving member four is connected with a transmission gear, the transmission gear extends from the through groove into the clamping groove and is engaged with the rack, the surface of the arc-shaped plate is provided with a plurality of mounting grooves arranged in a straight line, a plurality of different camera filters are connected in the mounting grooves, and one group of camera filters is correspondingly arranged with the detection camera.

[0019] The application has the beneficial effects that: the application adopts the composite motion structure of the annular driving assembly cooperating with the rotating assembly, can comprehensively cover multiple adjacent surfaces related to the anti-fake mark at the corner, completely eliminates the visual angle blind area, ensures to completely detect the printing defects of the anti-fake mark at each angle, meanwhile, the shield cover exposes the anti-fake mark through the detection port and shields the surrounding parts, effectively isolates the interference of the external environment light. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the application; Figure 2 is the shielding assembly structure schematic diagram of the application; Figure 3 is the clamping mechanism structure schematic diagram of the application; Figure 4 is the shield cover structure schematic diagram of the application; Figure 5 is the detection mechanism structure schematic diagram of the application; Figure 6 is the replacement assembly structure schematic diagram of the application.

[0021] In the figure: 1, rack; 2, conveying belt; 3, vertical driving mechanism; 4, clamping mechanism; 41, fixed plate; 42, clamping plate; 43, driving part one; 44, screw rod; 45, limiting strip; 46, limiting block; 47, limiting groove; 5, shielding assembly; 51, shield cover; 511, top plate; 512, side plate; 52, detection port; 53, telescopic rod; 531, fixed rod; 532, movable rod; 533, compression spring; 54, pressing part; 541, first connecting rod; 542, second connecting rod; 543, mounting strip; 6, annular driving assembly; 61, driving part two; 62, ring sleeve; 63, inner gear ring; 64, driving gear; 7, rotating assembly; 71, driving part three; 72, support frame; 73, rotating plate; 74, sliding groove; 8, detection camera; 9, mounting plate; 10, round plate; 11, replacement assembly; 111, driving part four; 112, mounting block; 113, arc plate; 114, rack; 115, transmission gear; 12, camera filter. DETAILED DESCRIPTION

[0022] It is necessary to point out here that the following detailed description is only used to further illustrate the application and cannot be understood as limiting the protection scope of the application, and the skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0023] Example one As Figure 1 , Figure 2As shown, a kind of anti-fake ink printing defect detection device, including rack 1, conveying belt 2, vertical drive mechanism 3, detection mechanism and clamping mechanism 4, conveying belt 2 is installed on rack 1, for conveying package box, detection mechanism is connected on rack 1, and it is located above conveying belt 2, when conveying belt 2 conveys package box to the below detection mechanism, clamping mechanism 4 clamps package box, and anti-fake mark is printed in the corner of package box; The driving end of vertical drive mechanism 3 is connected with shielding assembly 5, shielding assembly 5 includes cover 51, the surface of cover 51 is reserved with detection port 52, detection port 52 corresponds with anti-fake mark, vertical drive mechanism 3 drives cover 51 to shield the surrounding position of package box printed with anti-fake mark, simultaneously drive detection mechanism to be close to anti-fake mark; Detection mechanism includes annular drive assembly 6, rotating assembly 7 and detection camera 8, annular drive assembly 6 drives rotating assembly 7 to rotate along the periphery of package box, rotating assembly 7 drives detection camera 8 to rotate around anti-fake mark, and detection camera 8 detects anti-fake mark.

[0024] Specifically, limit rod is connected on rack 1, limit rod is arranged at the both sides of conveying belt 2, can prevent package box from moving out of transmission belt.

[0025] In the embodiment, anti-fake mark is arranged at the corner of package box, it contacts three surfaces of package box, and detection port 52 is opened at the corner of cover 51, the setting of detection port 52 is consistent with the corner number of the top surface of package box, so when package box is placed on conveying belt 2, no matter which corner of anti-fake mark is not hidden.

[0026] In actual use, annular drive assembly 6 drives detection camera 8 to rotate to the position printed with anti-fake mark, then rotating assembly 7 drives detection camera 8 to rotate around anti-fake mark, so that detection camera 8 can photograph each surface of anti-fake mark.

[0027] Further, clamping mechanism 4 includes fixed plate 41, first drive assembly and two groups of symmetrically arranged clamping plates 42, fixed plate 41 is connected on rack 1, the end of two groups of clamping plates 42 away from package box is rotatably connected on the surface of fixed plate 41, and first drive assembly drives two groups of clamping plates 42 to rotate to clamp package box.

[0028] Further, first drive assembly includes driving piece one 43, screw rod 44 and limiting strip 45, driving piece one 43 is connected on fixed plate 41, one end of screw rod 44 is fixedly connected on the driving end of driving piece one 43, the other end is fixedly connected on fixed plate 41, limiting strip 45 is slidably connected on the surface of fixed plate 41 and is threadedly connected on the surface of screw rod 44, the surface of two groups of clamping plates 42 is fixedly connected with limiting block 46, the surface of limiting strip 45 is provided with two groups of limiting grooves 47, and two groups of limiting blocks 46 are slidably connected in limiting groove 47.

[0029] It should be noted that the driving member 43 is an electric motor, specifically, it can be a servo motor, a stepper motor, etc.

[0030] In actual use, the driving member 43 drives the screw rod 44 to rotate to move the limiting strip 45 along the surface of the fixed plate 41, and under the cooperation of the limiting block 46 and the limiting groove 47 opened on the surface of the limiting strip 45, the clamping plate 42 is rotated along the surface of the fixed plate 41, so as to clamp or loosen the packaging box.

[0031] Further, the driving end of the vertical driving mechanism 3 is fixedly connected with a mounting plate 9, and the shielding assembly 5 and the annular driving assembly 6 are both mounted on the bottom surface of the mounting plate 9.

[0032] It should be noted that the vertical driving mechanism 3 is any kind of mechanical mechanism capable of linear motion, specifically, it can be an electric push rod, a hydraulic rod, a scissor lifting mechanism, etc.

[0033] Further, the shielding assembly 5 further includes a telescopic rod 53 and a pressing member 54, the shielding cover 51 includes a top plate 511 and a plurality of side plates 512 corresponding to the side surface of the packaging box, the top plate 511 and the plurality of side plates 512 are dispersedly arranged, the plurality of side plates 512 are connected through the pressing member 54, the upper end of the telescopic rod 53 is connected to the bottom surface of the mounting plate 9, the top plate 511 is connected to the lower end of the telescopic rod 53, when the vertical driving mechanism 3 drives the top plate 511 to press the top surface of the packaging box, the telescopic rod 53 cooperates with the pressing member 54 to make the plurality of side plates 512 adhere to the surface of the packaging box.

[0034] It should be noted that any one of the plurality of side plates 512 is not connected with the top plate 511, and each of the plurality of side plates 512 is also not connected, each surface of the shielding cover 51 is separately arranged, through this arrangement, the position of the packaging box can be corrected, even if the position of the packaging box is slightly deviated, the shielding cover 51 can also be accurately covered on the packaging box.

[0035] Further, the telescopic rod 53 includes a fixed rod 531 and a movable rod 532, the upper end of the movable rod 532 is slidingly connected in the fixed rod 531, one end of the movable rod 532 located in the fixed rod 531 is connected with a compression spring 533, the other end of the compression spring 533 away from the movable rod 532 is connected with the inner wall of the fixed rod 531, the upper end of the fixed rod 531 is fixedly connected with the bottom surface of the mounting plate 9, and the top plate 511 is connected with the lower end of the movable rod 532. The surface of each group of side plates 512 is connected with a pressing piece 54, the pressing piece 54 comprises a first connecting rod 541, a second connecting rod 542 and a mounting strip 543, the mounting strip 543 is connected to the surface of the side plate 512, one end of the second connecting rod 542 is rotatably connected to the surface of the mounting strip 543, the other end is rotatably connected to the surface of the movable rod 532, one end of the first connecting rod 541 is rotatably connected to the surface of the fixed rod 531, the other end is rotatably connected to the surface of the second connecting rod 542.

[0036] In actual use, when the vertical driving mechanism 3 drives the cover 51 to move downward, the top plate 511 gradually presses on the upper top surface of the packaging box, at this time, due to the upward movement of the movable rod 532, under the action of the first connecting rod 541, the second connecting rod 542 and the mounting strip 543, the side plate 512 is attached to the side surface of the packaging box, thereby achieving the shielding of the surrounding part of the anti-fake mark.

[0037] Further, the annular driving assembly 6 comprises a driving piece two 61, a ring sleeve 62 and an inner gear ring 63, the ring sleeve 62 is fixedly connected to the bottom surface of the mounting plate 9, the inner gear ring 63 is rotatably connected in the ring sleeve 62, the driving piece two 61 is connected to the upper surface of the mounting plate 9, the driving end of the driving piece two 61 penetrates through the mounting plate 9 and is connected with a driving gear 64, the driving gear 64 is engaged with the inner gear ring 63, and the rotating assembly 7 is connected to the surface of the inner gear ring 63.

[0038] It should be noted that the driving piece two 61 is a motor, specifically, it can be a servo motor, a stepping motor, etc.

[0039] In actual use, the driving piece two 61 drives the driving gear 64 to rotate, so as to drive the rotating assembly 7 connected to the inner gear ring 63 to rotate.

[0040] Further, the rotating assembly 7 comprises two groups of driving pieces three 71, a support frame 72 and two groups of vertically staggered rotating plates 73, the two groups of rotating plates 73 are in a whole semispherical shape, the two groups of driving pieces three 71 are connected to the support frame 72, one end of the two groups of rotating plates 73 is fixedly connected to the driving end of the two groups of driving pieces three 71 respectively, the other end is rotatably connected to the support frame 72 respectively, and the surface of the two groups of rotating plates 73 is provided with a sliding groove 74, the detection camera 8 penetrates through the two groups of sliding grooves 74 and slides along the inner wall of the two groups of sliding grooves 74.

[0041] It should be noted that the driving piece three 71 is a motor, specifically, it can be a servo motor, a stepping motor, etc.

[0042] In actual use, when one of the two groups of driving pieces three 71 drives the corresponding rotating plate 73 to rotate, it will make the detection camera 8 slide along the sliding groove 74 provided on the other rotating plate 73, and through this kind of setting, the detection camera 8 can rotate in three dimensions in the semisphere formed by the two groups of rotating plates 73.

[0043] Further, the outer surface of the detection camera 8 is connected with two groups of circular plates 10, two groups of rotating plates 73 are clamped between the two groups of circular plates 10, and the circular plate 10 near the anti-fake mark side is provided with a replacement assembly 11 for replacing the camera filter 12.

[0044] It should be noted that the detection camera 8 is limited in the sliding groove 74 by the two groups of circular plates 10.

[0045] Further, the replacement assembly 11 includes a driving member four 111, a mounting block 112 and an arc-shaped plate 113, the mounting block 112 is connected to the circular plate 10 near the anti-fake mark side, the surface of the mounting block 112 is provided with a clamping groove, the arc-shaped plate 113 is slidingly connected in the clamping groove, one side edge of the arc-shaped plate 113 in the clamping groove is connected with a gear rack 114, the driving member four 111 is connected to the surface of the mounting block 112, the surface of the mounting block 112 is provided with a through groove, the driving end of the driving member four 111 is connected with a transmission gear 115, the transmission gear 115 extends from the through groove into the clamping groove and meshes with the gear rack 114, the surface of the arc-shaped plate 113 is provided with a plurality of linearly arranged mounting grooves, a plurality of different camera filters 12 are connected in the mounting grooves, and one group of camera filters 12 is arranged corresponding to the detection camera 8.

[0046] Specifically, the gear rack 114 is arc-shaped, and the curvature thereof is consistent with that of the arc-shaped plate 113.

[0047] It should be noted that the driving member two 61 is a motor, specifically, it can be a servo motor, a stepper motor, etc.

[0048] In actual use, the driving member two 61 drives the transmission gear 115 to rotate, so that the arc-shaped plate 113 connected to the gear rack 114 slides along the inner wall of the clamping groove, thereby replacing the camera filter 12 at the detection end of the detection camera 8.

[0049] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A device for detecting printing defects in anti-counterfeiting ink, characterized in that, The utility model provides an anti -fake ink printing defect detection device, including frame, conveyer belt, vertical drive mechanism, detection mechanism and clamping mechanism, the conveyer belt is installed on the frame for conveying package box, the detection mechanism is connected on the frame and is located the conveyer belt top, when the conveyer belt conveys package box to the detection mechanism below, the clamping mechanism clamps package box, and the anti -fake mark is printed in the corner of package box; The driving end of the vertical drive mechanism is connected with a shielding assembly, the shielding assembly comprises a shielding cover, the surface of the shielding cover is provided with a detection opening corresponding to the anti -fake mark, the vertical drive mechanism drives the shielding cover to shield the surrounding part of the package box printed with the anti -fake mark, and drives the detection mechanism to approach the anti -fake mark at the same time; The detection mechanism comprises a ring-shaped drive assembly, a rotating assembly and a detection camera, the ring-shaped drive assembly drives the rotating assembly to rotate around the package box, the rotating assembly drives the detection camera to rotate around the anti -fake mark, and the detection camera detects the anti -fake mark.

2. A device for detecting defects in a security ink print according to claim 1, characterized in that: The clamping mechanism comprises a fixed plate, a first drive assembly and two groups of symmetrically arranged clamping plates, the fixed plate is connected to the frame, one end of each group of clamping plates away from the package box is rotatably connected to the surface of the fixed plate, and the first drive assembly drives the two groups of clamping plates to rotate to clamp the package box.

3. A security ink printed defect detection apparatus as claimed in claim 2, wherein: The first drive assembly comprises a driving piece one, a screw rod and a limiting strip, the driving piece one is connected to the fixed plate, one end of the screw rod is fixedly connected to the driving end of the driving piece one, the other end is fixedly connected to the fixed plate, the limiting strip is slidably connected to the surface of the fixed plate and is threadedly connected to the surface of the screw rod, the surface of each group of clamping plates is fixedly connected to a limiting block, the surface of the limiting strip is provided with two groups of limiting grooves, and each group of limiting block is slidably connected in the limiting groove.

4. A device for detecting defects in a security ink print according to claim 1, characterized in that: The driving end of the vertical drive mechanism is fixedly connected to a mounting plate, and the shielding assembly and the ring-shaped drive assembly are mounted on the bottom surface of the mounting plate.

5. A security ink printed defect detection apparatus as claimed in claim 4, wherein: The shielding assembly further comprises a telescopic rod and a pressing piece, the shielding cover comprises a top plate and a plurality of side plates arranged corresponding to the side surface of the package box, the top plate and the plurality of side plates are arranged in a scattered manner, the plurality of side plates are connected through the pressing piece, the upper end of the telescopic rod is connected to the bottom surface of the mounting plate, the top plate is connected to the lower end of the telescopic rod, and when the vertical drive mechanism drives the top plate to press the top surface of the package box, the telescopic rod cooperates with the pressing piece to make the plurality of side plates adhere to the surface of the package box.

6. A security ink printed defect detection apparatus as claimed in claim 5, wherein: The telescopic rod comprises a fixed rod and a movable rod, the upper end of the movable rod is slidably connected in the fixed rod, one end of the movable rod in the fixed rod is connected with a compression spring, the other end of the compression spring away from the movable rod is connected with the inner wall of the fixed rod, the upper end of the fixed rod is fixedly connected to the bottom surface of the mounting plate, and the top plate is connected to the lower end of the movable rod. The surface of each group of side plates is connected with a pressing piece, the pressing piece comprises a first connecting rod, a second connecting rod and a mounting strip, the mounting strip is connected to the surface of the side plate, one end of the second connecting rod is rotatably connected to the surface of the mounting strip, the other end is rotatably connected to the surface of the movable rod, one end of the first connecting rod is rotatably connected to the surface of the fixed rod, and the other end is rotatably connected to the surface of the second connecting rod.

7. A security ink printing defect detection apparatus as claimed in claim 1, wherein: The annular driving assembly comprises a driving member two, a ring sleeve and an inner gear ring, the ring sleeve is fixedly connected to the bottom surface of the mounting plate, the inner gear ring is rotatably connected to the ring sleeve, the driving member two is connected to the upper surface of the mounting plate, the driving end of the driving member two penetrates through the mounting plate and is connected with a driving gear, the driving gear is engaged with the inner gear ring, and the rotating assembly is connected to the surface of the inner gear ring.

8. A security ink printing defect detection apparatus according to claim 7, characterized in that: The rotating assembly comprises two groups of driving members three, a supporting frame and two groups of vertically staggered rotating plates, the two groups of rotating plates are in a whole semispherical shape, the two groups of driving members three are connected to the supporting frame, one end of the two groups of rotating plates is fixedly connected to the driving end of the two groups of driving members three respectively, the other end of the two groups of rotating plates is rotatably connected to the supporting frame respectively, and the surface of the two groups of rotating plates is provided with a sliding groove.

9. A security ink print defect detection apparatus according to claim 8, wherein: The outer surface of the detecting camera is connected with two groups of circular plates, the two groups of rotating plates are clamped between the two groups of circular plates, the side circular plate close to the anti-fake sign is provided with a replacing assembly for replacing the camera filter.

10. A security ink printing defect detection apparatus as claimed in claim 1, wherein: The replacing assembly comprises a driving member four, a mounting block and an arc-shaped plate, the mounting block is connected to the circular plate close to the anti-fake sign, the surface of the mounting block is provided with a clamping groove, the arc-shaped plate is slidably connected to the clamping groove, one side edge of the arc-shaped plate in the clamping groove is connected with a rack, the driving member four is connected to the surface of the mounting block, the surface of the mounting block is provided with a through groove, the driving end of the driving member four is connected with a transmission gear, the transmission gear extends from the through groove into the clamping groove and is engaged with the rack, the surface of the arc-shaped plate is provided with a plurality of linearly arranged mounting grooves, and a plurality of different camera filters are connected to the mounting grooves, wherein one group of camera filters is arranged correspondingly to the detecting camera.

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