Printed product image color conformity detection device and detection method

Abstract

The present application relates to the technical field of printed matter detection, and in particular to a printed matter image color conformity detection device and detection method, comprising a detection frame, wherein a plurality of spacers are sequentially arranged inside the detection frame along its length direction, and the spacers divide the interior of the detection frame into a detection area, a friction area and a flattening area in sequence; during the rotation of the rotating shaft, the friction belt is driven to move synchronously, and then the friction belt can rub the printed surface of the label paper, and during this process, a cleaning sponge can clean the surface of the friction belt to avoid the coating generated by friction adhering to the friction belt, causing the friction surface of the friction belt to be smooth, resulting in a reduction in the roughness of the friction belt surface, ensuring that the friction belt always rubs the label paper with an appropriate degree of roughness, and improving the friction effect of the friction belt on the printed surface of the label paper.

Description

Technical Field

[0001] The present application relates to the technical field of printed matter detection, and in particular to a device and method for detecting color conformance of printed matter images. Background Art

[0002] In recent years, printed image color conformance detection technology has been widely used in the printing industry. Due to the complexity of the printing process and the significant impact of color differences on the quality of printed products, it is crucial to achieve rapid and accurate detection of printed image color.

[0003] Among them, product labels are also a type of printed matter, usually pasted on product packaging boxes. During the transportation of the product packaging boxes, there may be friction on their surface. Long-term friction may cause wear and tear of the image color on the product label paper surface. Therefore, after the product label paper is produced, it is necessary to apply friction to its surface before detecting and processing the image color on its surface. For example, patent application publication number CN113686716B discloses a printed matter detection device, whose main function is to simply and quickly detect the wear resistance and anti-sticking properties of printed matter. During use, the device rubs the printed matter with a scraper fixed to the bottom of the spring rod to detect its wear resistance. When the scraper is reset, the support block folds and unfolds the printed matter to test its anti-sticking properties. The two pulleys are connected by a belt, which enables precise scraper movement to ensure the accuracy of the detection results and significantly improve the user's detection efficiency.

[0004] However, the above patent application still has the following problems in the process of printed matter detection: when applying external force friction to the printed matter, the above patent application does not clean the part of the scraper that contacts the printed matter (i.e., the friction surface). After a period of time, the friction surface of the scraper may become smooth due to filling with paint, etc., thereby affecting the subsequent friction effect of the scraper.

[0005] Based on this, the above-mentioned printed matter detection method still has room for improvement. Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a printed matter image color conformance detection device and detection method, which adopts the following technical solutions:

[0007] In a first aspect, a printed matter image color conformity detection device includes a detection frame, wherein a plurality of spacers are sequentially arranged inside the detection frame along its length direction, and the spacers divide the interior of the detection frame into a detection area, a friction area, and a flattening area.

[0008] The detection area is provided with a camera for photographing label paper.

[0009] The friction area is provided with a friction mechanism for applying friction to the label paper, including: a reciprocating frame arranged inside the friction area and reciprocating along the length direction of the detection frame, and a through groove extending along the width direction of the detection frame is provided inside the reciprocating frame.

[0010] The rotating shaft is arranged inside the through slot and symmetrically along the extending direction of the through slot, and is rotatably installed inside the through slot through a bearing. A friction belt is installed between the two rotating shafts for applying friction to the label paper.

[0011] The cleaning sponge is arranged inside the through groove and abuts against the friction belt to clean the paint adhered to the friction belt.

[0012] Preferably, the flattening area is provided with a flattening mechanism, including: two flattening rollers, which are symmetrically arranged along the width direction of the detection frame and reciprocate along the width direction of the detection frame.

[0013] The reciprocating blocks are symmetrically arranged along the height direction of the detection frame and slidably arranged on the inner wall of the flattening area on the corresponding side, and both ends of the flattening roller are respectively installed on the reciprocating blocks on the corresponding side through bearings.

[0014] The flattening component is arranged on the flattening roller and flattens the label paper in the vertical direction.

[0015] Preferably, both the detection frame and the partition plate are provided with through slots for moving the label paper, and transition rollers are symmetrically installed inside the through slots along the width direction of the detection frame.

[0016] Preferably, the shaft head of the flattening roller near the top of the detection frame passes through the reciprocating block on the corresponding side, and a clearance groove is provided on the top of the detection frame for making way for the shaft head on the corresponding side of the flattening roller. Gear 1 is installed on the shaft head of the flattening roller near the top of the detection frame, and a complete rack meshing with gear 1 is installed on the top of the detection frame.

[0017] Preferably, the flattening assembly includes a thread arranged on the circumferential surface of the flattening roller, and the threads on the two flattening rollers have opposite directions. Lifting blocks that cooperate with the threads are arranged on the back sides of the flattening rollers. A limiting rod is installed on the reciprocating block near the bottom of the flattening area along its width direction, and the limiting rod is slid through the lifting block on the corresponding side. Elastic telescopic rods are symmetrically installed on the opposite surfaces of the lifting blocks along their length directions, and rubber balls are installed on the telescopic ends of the elastic telescopic rods.

[0018] Preferably, the reciprocating frame is symmetrically installed with a reciprocating connecting frame along its height direction, and the reciprocating connecting frame is slidably arranged on the inner wall of the friction zone on the corresponding side, wherein multiple cleaning sponges are evenly arranged along the length direction of the rotating roller, and the cleaning sponges are all installed with linkage blocks, and linkage rods are commonly installed between the linkage blocks, and an extension plate is provided on the reciprocating connecting frame near the bottom of the friction zone, and a telescopic elastic rod is installed on the extension plate, and the telescopic end of the telescopic elastic rod is connected to the linkage block near the extension plate.

[0019] Preferably, the reciprocating connecting frame near the top of the friction zone passes through the detection frame, and the rotating shaft head near the extension plate passes through the reciprocating frame and the top of the detection frame in sequence, and the detection frame is provided with a makeshift groove for making way for the corresponding reciprocating connecting frame and the corresponding rotating shaft head, and gear 2 is installed on the rotating shaft head passing through the corresponding makeshift groove, and a rack plate meshing with gear 2 is installed on the detection frame.

[0020] Preferably, a linkage frame 1 is installed on the reciprocating connecting frame passing through the said give way slot, a bidirectional screw 1 is installed on the linkage frame 1 by a threaded connection, a support protrusion 1 is provided on the detection frame, and the bidirectional screw 1 is installed on the support protrusion 1 through a bearing, a linkage frame 2 is installed on the reciprocating block near the top of the flattening area, a bidirectional screw 2 is installed on the linkage frame 2 by a threaded connection, a support protrusion 2 is provided on the detection frame, and the bidirectional screw 2 is installed on the support protrusion 2 through a bearing, and the bidirectional screw 1 and the bidirectional screw 2 are connected by a bevel gear transmission.

[0021] Preferably, a plurality of air nozzles are evenly arranged on both side walls of the reciprocating frame along the height direction thereof.

[0022] In the second aspect, a method for detecting color conformity of a printed image includes the following steps: S1: material preparation, passing the label paper through the through slot in sequence, and making the label paper located between the two transition rollers corresponding to the through slot, at which time the label paper is pulled to move.

[0023] S2: Flattening process: the reciprocating block drives the flattening roller to flatten the label paper in the horizontal direction during the reciprocating movement, and flattens the label paper in the vertical direction through the flattening component.

[0024] S3: Friction treatment: the flattened label paper is subjected to friction treatment after passing through the friction zone.

[0025] S4: Detection processing, using a camera to shoot the label paper after friction and compare it with the standard label paper.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. In the friction mechanism designed in the present invention, the rotating shaft drives the friction belt to move synchronously during rotation, so that the friction belt can rub the printed surface of the label paper. During this process, the cleaning sponge can clean the surface of the friction belt to prevent the paint generated by friction from adhering to the friction belt, causing the friction surface of the friction belt to be smooth, resulting in a reduction in the roughness of the friction belt surface, ensuring that the friction belt always rubs the label paper with an appropriate degree of roughness, and improving the friction effect of the friction belt on the printed surface of the label paper.

[0028] 2. In the flattening mechanism designed in the present invention, the flattening roller can pull the label paper in the horizontal direction during the reciprocating movement to ensure that the label paper can be unfolded in the horizontal direction. At the same time, the flattening component can unfold the label paper in the vertical direction to ensure that the label paper is unfolded in the vertical direction. The flattened label paper can increase its friction area with the friction belt, so that the friction belt can fully rub the printed surface of the label paper, avoiding dead angles in friction that affect the comprehensiveness of the label paper detection process.

[0029] 3. During the reciprocating movement of the linkage rod designed in the present invention, the cleaning sponge is driven to reciprocate on the friction belt through the linkage block, and the cleaning sponge can provide dynamic friction to the friction belt, so that the paint attached to the friction surface of the friction belt is removed more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0031] Figure 2 It is a schematic diagram of the three-dimensional installation structure between the reciprocating frame, the rotating shaft and the friction belt of the present invention.

[0032] Figure 3 This invention Figure 2 A partial enlarged view of point A in the middle.

[0033] Figure 4 It is a schematic diagram of the three-dimensional installation structure between the flattening roller, reciprocating block and flattening assembly of the present invention.

[0034] Figure 5 This invention Figure 4 A partial enlarged view of point B in the middle.

[0035] Figure 6 This invention Figure 4 A partial enlarged view of point C in the middle.

[0036] Figure 7 It is a cross-sectional view between the drilling ring, the air inlet collar and the collecting end cover of the present invention.

[0037] Figure 8 This invention Figure 7 A partial enlarged view of point D in the middle.

[0038] Figure 9 This invention Figure 7 A partial enlarged view of point E in the middle.

[0039] Figure 10 This is a flow chart of the method for detecting color conformity of printed images of the present invention.

[0040] Explanation of reference numerals: 1. Detection frame; 2. Spacer plate; 21. Transition roller; 3. Detection area; 31. Camera; 4. Friction area; 5. Flattening area; 6. Friction mechanism; 61. Reciprocating frame; 611. Reciprocating connecting frame; 612. Linkage frame 1; 613. Bidirectional screw 1; 614. Linkage connecting shaft; 615. Gear 3; 616. Intermittent rack; 617. Traction rope; 618. Air nozzle; 62. Rotating shaft; 621. Gear 2; 6 22. Rack plate; 63. Friction belt; 64. Cleaning sponge; 641. Linkage block; 645. Linkage rod; 646. Extension plate; 647. Telescopic elastic rod; 7. Flattening mechanism; 71. Flattening roller; 72. Reciprocating block; 721. Linkage frame 2; 722. Bidirectional screw 2; 73. Flattening assembly; 731. Lifting block; 732. Limit rod; 733. Elastic telescopic rod; 734. Rubber ball; 74. Gear 1; 75. Complete rack. DETAILED DESCRIPTION

[0041] The following is combined with Figures 1 to 10 This application is described in further detail.

[0042] The embodiments of the present application disclose a device and method for detecting the color conformity of a printed image. By applying an external friction force to the label paper, the environment in which the label paper is subjected to external friction can be simulated, and the color conformity of the label paper after the friction can be detected.

[0043] Example 1:

[0044] Reference Figure 1 A device for detecting color conformity of a printed image includes a detection frame 1. A plurality of spacer plates 2 are sequentially arranged inside the detection frame 1 along its length direction, and the spacer plates 2 divide the interior of the detection frame 1 into a detection area 3, a friction area 4 and a flattening area 5 in sequence.

[0045] The detection area 3 is provided with a camera 31 for photographing label paper.

[0046] Reference Figure 2 as well as Figure 3 The friction area 4 is provided with a friction mechanism 6 for applying friction to the label paper, including: a reciprocating frame 61, which is arranged inside the friction area 4 and moves back and forth along the length direction of the detection frame 1, and a through groove extending along the width direction of the detection frame 1 is provided inside the reciprocating frame 61.

[0047] The rotating shaft 62 is arranged inside the through slot and symmetrically along the extending direction of the through slot, and is rotatably installed inside the through slot through a bearing. A friction belt 63 is installed between the two rotating shafts 62 for applying friction to the label paper.

[0048] The cleaning sponge 64 is arranged inside the through groove and abuts against the friction belt 63 to clean the paint adhered to the friction belt 63 .

[0049] The rotation of the rotating shaft 62 causes the friction belt 63 to move in contact, thereby rubbing the printed surface of the label paper. During this process, the cleaning sponge 64 can clean the surface of the friction belt 63 to prevent the paint generated by friction from adhering to the friction belt 63, causing the friction surface of the friction belt 63 to be smooth, resulting in a reduction in the surface roughness of the friction belt 63, ensuring that the friction belt 63 always rubs the label paper with an appropriate degree of roughness, thereby improving the friction effect of the friction belt 63 on the printed surface of the label paper.

[0050] Reference Figure 1 The detection frame 1 and the spacer plate 2 are both provided with through slots for moving the label paper, and transition rollers 21 are symmetrically installed inside the through slots along the width direction of the detection frame 1.

[0051] During specific operation, the label paper to be inspected is pulled along the flattening area 5 toward the inspection area 3, and the label paper passes through the through-slot. The label paper passing through the through-slot is located between the transition rollers 21 corresponding to the inside of the through-slot. The transition rollers 21 cooperate with each other to reduce the friction between the label paper and the through-slot, and avoid the possibility of the label paper breaking due to excessive friction between the label paper and the inside of the through-slot. After the label paper passes through all the through-slots, the end of the label paper located in the inspection area 3 is wound on the existing winding roller (not shown in the figure). The label paper can be wound during the rotation of the existing winding roller. At this time, the label paper moves inside the inspection frame 1.

[0052] Reference Figures 4 to 6 In order to avoid wrinkles on the label paper after printing and winding, which may cause the friction belt 63 to not rub the printed surface of the label paper thoroughly, the flattening roller 71 and the flattening component 73 designed in the present invention cooperate with each other to flatten the label paper to ensure that the friction belt 63 can fully rub the label paper. Specifically, the flattening area 5 is provided with a flattening mechanism 7, including: two flattening rollers 71 are provided and are symmetrically arranged along the width direction of the detection frame 1, and move back and forth along the width direction of the detection frame 1.

[0053] The reciprocating block 72 is symmetrically arranged along the height direction of the detection frame 1 and slidably arranged on the inner wall of the flattening area 5 on the corresponding side, and both ends of the flattening roller 71 are respectively installed on the reciprocating block 72 on the corresponding side through bearings.

[0054] The flattening assembly 73 is disposed on the flattening roller 71 and flattens the label paper in the vertical direction.

[0055] The shaft head of the flattening roller 71 near the top of the detection frame 1 passes through the reciprocating block 72 on the corresponding side, and a clearance groove is provided on the top of the detection frame 1 for the shaft head on the corresponding side of the flattening roller 71 to make way. A gear 1 74 is installed on the shaft head of the flattening roller 71 near the top of the detection frame 1, and a complete rack 75 meshing with the gear 1 74 is installed on the top of the detection frame 1.

[0056] The flattening assembly 73 includes a thread arranged on the circumferential surface of the flattening roller 71, and the threads on the two flattening rollers 71 have opposite directions. A lifting block 731 that cooperates with the thread is arranged on the opposite side of the flattening roller 71. A limiting rod 732 is installed along the width direction of the reciprocating block 72 near the bottom of the flattening area 5, and the limiting rod 732 is slidably arranged on the lifting block 731 on the corresponding side. Elastic telescopic rods 733 are symmetrically installed on the opposite surface of the lifting block 731 along its length direction, and a rubber ball 734 is installed at the telescopic end of the elastic telescopic rod 733.

[0057] The label paper passes between the two flattening rollers 71 during the movement, and the label paper is also located between the two adjacent rubber balls 734. During specific operation, the reciprocating block 72 is driven by an external driving force to reciprocate inside the flattening area 5. During the reciprocating movement of the reciprocating block 72, the label paper is pulled by the flattening roller 71. Then, during the reciprocating movement of the flattening roller 71, the label paper can be flattened in the horizontal direction, so that the wrinkles on the label paper in the horizontal direction are unfolded.

[0058] When the reciprocating block 72 drives the flattening roller 71 to move back and forth, the flattening roller 71 rotates under the coordinated action of gear 1 74 and the complete rack 75. At this time, the flattening roller 71 drives the corresponding lifting block 731 to move synchronously through the screw transmission during the rotation process, and due to the different screw directions of the threads, the two lifting blocks 731 move toward or away from each other synchronously. When the two lifting blocks 731 are separated, the elastic telescopic rod 733 will guide the rubber ball 734 to move horizontally synchronously. At this time, the rubber ball 734 remains relatively stationary with the telescopic end of the elastic telescopic rod 733, that is, the rubber ball 734 does not rotate. When the rubber balls 734 corresponding to the two lifting blocks 731 move away from each other, they can apply external force to the label paper, causing the label paper to be pulled to the upper and lower sides, thereby causing the folds of the label paper to unfold in the vertical direction.

[0059] The limiting rod 732 ensures that the lifting block 731 remains stable during movement, preventing it from deflecting relative to the flattening roller 71 .

[0060] The rubber balls 734 between the telescopic sections of adjacent elastic telescopic rods 733 are tightly abutted, that is, the corresponding elastic telescopic rods 733 are in a compressed state, and the elastic telescopic rods 733 and the rubber balls 734 cooperate with each other to always be in close contact with the label paper, increasing the friction between the adjacent rubber balls 734 when they move apart, thereby preventing the rubber balls 734 and the label paper from sliding, ensuring smooth unfolding of the label paper. In addition, when the flattening roller 71 flattens the label paper, the label bends at the flattening roller 71, so the elastic telescopic rod 733 can ensure that the rubber ball 734 is always in close contact with the label paper, ensuring that the rubber ball 734 can still flatten the label paper even if the label paper is in a bent state.

[0061] When the rubber ball 734 moves toward each other, the rubber ball 734 and the telescopic end of the elastic telescopic rod 733 keep rotating, that is, the rubber ball 734 rotates on the label paper, thereby avoiding the possibility of the rubber ball 734 causing the label paper to wrinkle when the rubber ball 734 moves toward each other.

[0062] Therefore, the label paper can be pulled in the horizontal direction during the reciprocating movement of the flattening roller 71 to ensure that the label paper can be unfolded in the horizontal direction. At the same time, the lifting block 731 can be synchronously driven up and down by the screw transmission during the rotation of the flattening roller 71. Then, during the reciprocating movement of the lifting block 731, the elastic telescopic rod 733 and the rubber ball 734 cooperate with each other to enable the label paper to be unfolded in the vertical direction to ensure that the label paper is unfolded in the vertical direction. The flattened label paper can increase its friction area with the friction belt 63, so that the friction belt 63 can fully rub the printed surface of the label paper to avoid dead angles in friction that affect the comprehensiveness of the label paper detection process.

[0063] Reference Figure 1 as well as Figure 3 In order to ensure the friction effect of the friction belt 63 on the printed surface of the label paper and the cleaning effect of the friction belt 63, the reciprocating connecting frame 611 provided by the present invention can drive the reciprocating frame 61 to move back and forth, and multiple cleaning sponges 64 can cooperate with each other to clean the friction belt 63. Specifically, the reciprocating frame 61 is symmetrically installed with reciprocating connecting frames 611 along its height direction, and the reciprocating connecting frames 611 are slidably set on the inner wall of the friction zone 4 on the corresponding side, wherein multiple cleaning sponges 64 are evenly arranged along the length direction of the rotating roller, and linkage blocks 641 are installed on the cleaning sponges 64, and linkage rods 645 are installed between the linkage blocks 641. An extension plate 646 is provided on the reciprocating connecting frame 611 near the bottom of the friction zone 4, and a telescopic elastic rod 647 is installed on the extension plate 646. The telescopic end of the telescopic elastic rod 647 is connected to the linkage block 641 near the extension plate 646.

[0064] During specific operation, through external driving force, the reciprocating connecting frame 611 moves in the length direction of the detection frame 1, and at the same time drives the reciprocating frame 61 to move, and then the reciprocating frame 61 can drive the friction belt 63 to move back and forth synchronously along the label paper during the reciprocating movement, and then the rotating shaft 62 drives the friction belt 63 to rub the printed surface of the label paper (that is, the friction belt 63 rotates), and the reciprocating frame 61 drives the friction belt 63 to rub the printed surface of the label paper synchronously during the reciprocating movement (that is, the friction belt 63 moves back and forth along the length direction of the label paper). The two friction modes of the friction belt 63 cooperate with each other to ensure the friction effect of the label paper.

[0065] In addition, during the reciprocating movement of the reciprocating frame 61, the linkage rod 645 is driven upward by an external driving force. When the linkage rod 645 moves upward, the cleaning sponge 64 is driven upward by the linkage block 641, and the telescopic elastic rod 647 is stretched. During the cleaning process, the cleaning sponge 64 applies an external friction force to the friction belt 63, thereby removing the paint adhered to the friction belt 63. When the linkage rod 645 rises to a certain height, the external driving force is removed. At this time, the telescopic elastic rod 647 drives the linkage rod 645 to reset during the resetting process. At this time, the linkage rod 645 drives the cleaning sponge 64 downward during the resetting process. After the cleaning sponge 64 is reset, repeating the above actions can drive the cleaning sponge 64 to move back and forth, thereby deeply cleaning the friction belt 63.

[0066] Reference Figure 8 A plurality of air nozzles 618 are evenly arranged on both side walls of the reciprocating frame 61 along its height direction.

[0067] The air nozzle 618 is connected to the existing air pump outlet. During operation, the air pump is started during the reciprocating movement of the reciprocating frame 61, and air is ejected from the air pump outlet through the air nozzle 618. The air flow can blow the clean paint inside the reciprocating frame 61 outward, preventing the paint from re-attaching to the friction belt 63 due to static friction after falling from the friction belt 63.

[0068] Reference Figures 7 to 9 In order to reduce the use of drive during the rotation of the rotating shaft 62, the gear 2 621 provided by the present invention is engaged with the rack plate 622 to provide driving force for the rotating shaft 62. Specifically, the reciprocating connecting frame 611 near the top of the friction area 4 passes through the detection frame 1, and the axis head of the rotating shaft 62 near the extension plate 646 passes through the reciprocating frame 61 and the top of the detection frame 1 in sequence, and a clearance groove for making way for the corresponding reciprocating connecting frame 611 and the corresponding axis head of the rotating shaft 62 is opened on the detection frame 1. The axis head of the rotating shaft 62 passing through the corresponding clearance groove is installed with a gear 2 621, and the detection frame 1 is installed with a rack plate 622 that meshes with the gear 2 621.

[0069] During specific operation, the reciprocating frame 61 drives the rotating shaft 62 to move synchronously during its reciprocating movement. During the movement of the rotating shaft 62, the gear 2 621 and the rack plate 622 engage with each other and rotate. Then, during the rotation of the rotating shaft 62, the friction belt 63 can be driven to move, thereby driving the rotating shaft 62 to rotate without external drive.

[0070] A linkage frame 612 is installed on the reciprocating connecting frame 611 that passes through the give way slot, and a bidirectional screw 613 is installed on the linkage frame 612 by a threaded connection. A support protrusion 1 is provided on the detection frame 1, and the bidirectional screw 613 is installed on the support protrusion 1 through a bearing. A linkage frame 2 721 is installed on the reciprocating block 72 near the top of the flattening area 5, and a bidirectional screw 2 722 is installed on the linkage frame 2 721 by a threaded connection. A support protrusion 2 is provided on the detection frame 1, and the bidirectional screw 2 722 is installed on the support protrusion 2 through a bearing. The bidirectional screw 1 613 and the bidirectional screw 2 722 are connected by a bevel gear transmission.

[0071] During specific operation, the bidirectional screw 613 is connected to the output shaft of the existing drive motor, and the existing drive motor is started. The output shaft of the existing drive motor drives the bidirectional screw 613 to rotate during rotation. The bidirectional screw 613 drives the reciprocating connecting frame 611 to move back and forth through the linkage frame 612 during rotation. The bidirectional screw 613 drives the bidirectional screw 2 722 to rotate through the bevel gear meshing method during rotation. The reciprocating block 72 is driven to move back and forth through the linkage frame 2 721 during rotation. The reciprocating movement of the reciprocating block 72 drives the flattening roller 71 to move back and forth, and the label paper can be flattened during the reciprocating movement of the flattening roller 71. The reciprocating frame 61 and the flattening roller 71 can be driven to move back and forth through a single drive in cooperation with the bidirectional screw 613 and the bidirectional screw 2 722.

[0072] The camera 31 is installed inside the detection area 3 through the support plate. The label paper passes through the friction area 4 and enters the detection area 3. At this time, the camera 31 inside the detection area 3 can shoot the label paper after flattening and friction. Finally, the captured label paper image is tested for color consistency with the standard label paper to determine whether the label paper after friction meets the standard.

[0073] Example 2: Review Figure 8 On the basis of the first embodiment, a linkage shaft 614 is installed on the reciprocating connecting frame 611 that passes through the clearance slot, a gear three 615 is installed on the linkage shaft 614, and an intermittent rack 616 that meshes with the gear three 615 is installed on the detection frame 1, a traction rope 617 is installed on the linkage shaft 614, and the end of the traction rope 617 away from the linkage shaft 614 is installed on the linkage rod 645.

[0074] During specific operation, the movement of the reciprocating connecting frame 611 drives the linkage shaft 614, which in turn keeps the gear three 615 in synchronous movement. During the movement of the gear three 615, when it engages with the teeth on the intermittent rack 616, it drives the linkage shaft 614 to rotate. During the rotation of the linkage shaft 614, the traction rope 617 is wound up, and then the traction rope 617 moves away from the end of the linkage shaft 614 and drives the linkage rod 645 to move upward. When the gear three 615 moves out from the teeth on the intermittent rack 616, the linkage shaft 614 is no longer constrained by the gear three 615. At this time, the traction rope 617 naturally moves downward due to gravity. Repeating the above action can drive the linkage rod 645 to move back and forth, and thus the cleaning sponge 64 can be driven to move back and forth up and down through the cooperation between the linkage rod 645 and the linkage block 641 without external driving force.

[0075] Finally, refer to Figure 10 The present invention also provides a method for detecting the color conformity of a printed image, comprising the following steps: S1: preparing the material, passing the label paper through the through slot in sequence, and placing the label paper between the two transition rollers 21 corresponding to the through slot, and then pulling the label paper to move.

[0076] S2: Flattening process. During the reciprocating movement of the reciprocating block 72, the label paper is pulled by the flattening roller 71. Then, during the reciprocating movement of the flattening roller 71, the label paper can be flattened in the horizontal direction, so that the wrinkles on the label paper in the horizontal direction are unfolded. During the movement of the two lifting blocks 731 away from each other, the lifting block 731 drives the rubber ball 734 to move synchronously through the elastic telescopic rod 733. The rubber ball 734 remains relatively stationary with the telescopic end of the elastic telescopic rod 733 at this time, that is, the rubber ball 734 does not rotate. When the rubber balls 734 corresponding to the two lifting blocks 731 move away from each other, they can apply external force to the label paper, so that the label paper is pulled to the upper and lower sides, thereby unfolding the wrinkles on the label paper in the vertical direction.

[0077] S3: Friction treatment: the rotating shaft 62 drives the friction belt 63 to rub the printed surface of the label paper, and the reciprocating frame 61 drives the friction belt 63 to rub the printed surface of the label paper synchronously during the reciprocating movement.

[0078] S4: Detection processing. The label paper passing through the friction zone 4 enters the detection zone 3. At this time, the camera 31 inside the detection zone 3 can shoot the flattened and rubbed label paper. Finally, the captured label paper image is tested for color consistency with the standard label paper to determine whether the rubbed label paper meets the standard.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0080] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A printed matter image color conformity detection device, comprising a detection frame (1), wherein a plurality of spacer plates (2) are sequentially arranged inside the detection frame (1) along its length direction, and the spacer plates (2) sequentially divide the interior of the detection frame (1) into a detection area (3), a friction area (4) and a flattening area (5), characterized in that: The detection area (3) is provided with a camera (31) for photographing the label paper; The friction zone (4) is provided with a friction mechanism (6) for applying friction to the label paper, comprising: A reciprocating frame (61) is arranged inside the friction zone (4) and reciprocates along the length direction of the detection frame (1). A through groove extending along the width direction of the detection frame (1) is provided inside the reciprocating frame (61); A rotating shaft (62) is arranged inside the through slot and symmetrically arranged along the extending direction of the through slot, and is rotatably mounted inside the through slot via a bearing. A friction belt (63) is installed between the two rotating shafts (62) for applying friction to the label paper. A cleaning sponge (64) is arranged inside the through groove and abuts against the friction belt (63) to clean the paint adhered to the friction belt (63); The flattening area (5) is provided with a flattening mechanism (7), comprising: Two flattening rollers (71) are provided and are symmetrically arranged along the width direction of the detection frame (1), and reciprocate along the width direction of the detection frame (1); The reciprocating block (72) is symmetrically arranged along the height direction of the detection frame (1) and is slidably arranged on the inner wall of the flattening area (5) on the corresponding side, and both ends of the flattening roller (71) are respectively installed on the reciprocating block (72) on the corresponding side through bearings; A flattening assembly (73) is arranged on the flattening roller (71) and flattens the label paper in a vertical direction; The flattening assembly (73) includes a thread arranged on the circumferential surface of the flattening roller (71), and the threads on the two flattening rollers (71) have opposite directions. A lifting block (731) that matches the thread is arranged on the opposite side of the flattening roller (71). A limiting rod (732) is installed on the reciprocating block (72) near the bottom of the flattening area (5) along its width direction, and the limiting rod (732) is slidably arranged on the lifting block (731) on the corresponding side. An elastic telescopic rod (733) is symmetrically installed on the opposite surface of the lifting block (731) along its length direction, and a rubber ball (734) is installed at the telescopic end of the elastic telescopic rod (733).

2. The printed matter image color conformity detection device according to claim 1, characterized in that: The detection frame (1) and the partition plate (2) are both provided with through slots for moving label paper, and transition rollers (21) are symmetrically installed inside the through slots along the width direction of the detection frame (1).

3. The printed matter image color conformity detection device according to claim 1, characterized in that: The shaft head of the flattening roller (71) near the top of the detection frame (1) passes through the reciprocating block (72) on the corresponding side, and a clearance groove for the shaft head on the corresponding side of the flattening roller (71) is opened on the top of the detection frame (1). A gear 1 (74) is installed on the shaft head of the flattening roller (71) near the top of the detection frame (1), and a complete rack (75) meshing with the gear 1 (74) is installed on the top of the detection frame (1).

4. The printed matter image color conformity detection device according to claim 1, characterized in that: The reciprocating frame (61) is symmetrically mounted with a reciprocating connecting frame (611) along its height direction, and the reciprocating connecting frame (611) is slidably mounted on the inner wall of the friction zone (4) on the corresponding side, wherein a plurality of cleaning sponges (64) are evenly arranged along the length direction of the rotating roller, and a linkage block (641) is mounted on each of the cleaning sponges (64), and a linkage rod (645) is mounted between the linkage blocks (641), and an extension plate (646) is mounted on the reciprocating connecting frame (611) near the bottom of the friction zone (4), and a telescopic elastic rod (647) is mounted on the extension plate (646), and the telescopic end of the telescopic elastic rod (647) is connected to the linkage block (641) near the extension plate (646).

5. The printed matter image color conformity detection device according to claim 4, characterized in that: The reciprocating connecting frame (611) near the top of the friction zone (4) passes through the detection frame (1), and the shaft head of the rotating shaft (62) near the extension plate (646) passes through the reciprocating frame (61) and the top of the detection frame (1) in sequence, and a clearance groove is provided on the detection frame (1) for the corresponding reciprocating connecting frame (611) and the shaft head of the corresponding rotating shaft (62) to make way, and a gear 2 (621) is installed on the shaft head of the rotating shaft (62) passing through the corresponding clearance groove, and a rack plate (622) meshing with the gear 2 (621) is installed on the detection frame (1).

6. The printed matter image color conformity detection device according to claim 5, characterized in that: A linkage frame (612) is installed on the reciprocating connecting frame (611) passing through the said clearance slot, and a bidirectional screw (613) is installed on the linkage frame (612) by means of a threaded connection. A support protrusion (1) is provided on the detection frame (1), and the bidirectional screw (613) is installed on the support protrusion (1) through a bearing. A linkage frame (721) is installed on the reciprocating block (72) near the top of the flattening area (5), and a bidirectional screw (722) is installed on the linkage frame (721) by means of a threaded connection. A support protrusion (2) is provided on the detection frame (1), and the bidirectional screw (722) is installed on the support protrusion (2) through a bearing. The bidirectional screw (613) and the bidirectional screw (722) are connected to each other by a bevel gear transmission.

7. The printed matter image color conformity detection device according to claim 1, characterized in that: A plurality of air nozzles (618) are evenly arranged on both side walls of the reciprocating frame (61) along its height direction.

8. A method for detecting color conformity of a printed matter image, comprising a device for detecting color conformity of a printed matter image according to any one of claims 1 to 7, characterized in that: The method of use includes the following steps: S1: preparation for threading, passing the label paper through the through slot in sequence, and making the label paper be located between the two transition rollers (21) corresponding to the through slot, at which time the label paper is pulled to move; S2: Flattening process, during the reciprocating movement of the reciprocating block (72), the flattening roller (71) is driven to flatten the label paper in the horizontal direction, and the flattening component (73) is used to flatten the label paper in the vertical direction; S3: Friction treatment, the flattened label paper passes through the friction zone (4) and is then subjected to friction treatment; S4: Detection processing, using a camera (31) to photograph the label paper after the friction is rubbed, and compare it with the standard label paper.

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