Color printing product color difference checking and screening equipment and method thereof

Abstract

The invention relates to the technical field of color difference verification, and discloses color printing product color difference verification screening equipment and a method thereof.The color printing product color difference verification screening equipment comprises a base internally provided with a conveying belt used for conveying color printing products; the support is located in the middle of the base, and a third motor is installed at the top of the support and used for driving the two-way screw to rotate; the correcting plates are connected to the ends of the two sides of the two-way screw and used for moving along with rotation of the two-way screw; the extrusion mechanism is connected to the two sides of the middle of the two-way screw and used for driving the light supplementing lamp to move along with rotation of the two-way screw; and the camera is positioned below the two-way screw rod and is used for verifying the color printing product. A motor III drives a bidirectional screw rod to rotate, at the moment, correction plates on the two sides are driven to get close to each other to correct the position of a color printing product, and an extrusion mechanism can synchronously move along with the bidirectional screw rod and drive a light supplementing lamp to move, so that the position of the light supplementing lamp is synchronously adjusted when the position of the color printing product is calibrated, and then the illumination condition is guaranteed; and the verification accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of color difference calibration, in particular to a color print color difference calibration and screening device and a method thereof. Background Art

[0002] With the advancement of color printing technology, the quality requirements for printed products are becoming increasingly stringent. Color difference verification, as an important indicator for evaluating the quality of printed products, plays a crucial role in the production process. Currently, most existing color difference detection equipment relies on a fixed light source and camera to inspect the surface of printed products. However, due to the variable size and position of printed products, a fixed light source cannot provide uniform and stable lighting conditions for all printed products, resulting in inaccurate detection results.

[0003] In existing technologies, the light source position is typically fixed, making it difficult to flexibly adjust to the size and position of the printed product. When the size or position of the printed product changes, uneven or insufficient lighting may occur, affecting the camera's imaging quality and reducing detection accuracy. Furthermore, interference from ambient light is a common problem in existing technologies. Because the light in the detection environment varies, a fixed light source cannot effectively eliminate the impact of ambient light on detection accuracy, thereby increasing detection errors. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a color difference calibration and screening device for color printed products and a method thereof, which solves the problems in the existing equipment that the light source position is fixed and cannot be flexibly adjusted according to the size and position of the color printed products, the lighting conditions are uneven, it is easy to be interfered by ambient light, and the detection accuracy and reliability are insufficient.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A color print color difference calibration and screening device, comprising:

[0006] The base has a conveyor belt installed inside for transporting color printed products;

[0007] The bracket is located in the middle of the base, and a motor 3 is installed on the top of the bracket to drive the bidirectional screw to rotate;

[0008] A correction plate is connected to the ends of both sides of the bidirectional screw and is used to move as the bidirectional screw rotates;

[0009] The extrusion mechanism is connected to both sides of the middle part of the bidirectional screw and is used to drive the fill light to move along with the rotation of the bidirectional screw;

[0010] The camera is located below the bidirectional screw and is used to verify color printed products.

[0011] Preferably, support rollers are rotatably connected on both sides of the base, a motor 1 is installed on the outside of the base, the output end of the motor 1 is fixedly connected to one of the support rollers, and the support rollers on both sides are respectively located on both sides of the inner wall of the conveyor belt.

[0012] Preferably, a transfer mechanism is provided on the outside of the base, and the transfer mechanism includes a transfer frame, and a plurality of conveying rollers are installed inside the transfer frame. A sprocket is installed on one side of the plurality of conveying rollers, and the plurality of sprockets are connected by a chain, and a motor 2 is installed on one side of the transfer frame, and the output end of the motor 2 is connected to one of the sprockets.

[0013] Preferably, an embedding groove is provided on one side of the exterior of the base, and the outer wall of the transfer rack contacts the inner wall of the embedding groove.

[0014] Preferably, the extrusion mechanism includes an extrusion plate, the middle part of the extrusion plate is threadedly connected to the bidirectional screw, the top surface of the extrusion plate is slidably connected to the top surface of the inner wall of the bracket, one side of the extrusion plate is rotatably connected to a support rod 1, one side of the support rod 1 is rotatably connected to a sliding frame, the middle part of the sliding frame is slidably connected to a support rod, one side of the support rod is fixedly connected to a support block, the top surface of the support block is fixedly connected to the top surface of the inner wall of the bracket, and the fill light is fixedly connected to the bottom surface of the sliding frame.

[0015] Preferably, a support 1 is installed on the adjacent sides of the sliding frame and the extrusion plate, and a clamping rod 1 is fixedly connected to both sides of the support rod 1. The clamping rod 1 and the support 1 are rotatably connected, and a through hole is provided in the middle of the sliding frame, and the outer wall of the support rod is slidably connected to the inner wall of the through hole.

[0016] Preferably, a mounting plate is installed on the outside of the camera, a top surface of the mounting plate is fixedly connected to a guide rod, and the guide rod is slidably connected to the middle part of the bracket.

[0017] Preferably, the middle part of the bottom surface of the extrusion plate and the side of the mounting plate close to the extrusion plate are fixedly connected to the support two, and the middle part of the support two on both sides is rotatably connected to the clamping rod two, and the clamping rods two on both sides are fixedly connected by the support rod two.

[0018] Preferably, a limiting rod is fixedly connected to the middle portion of the correction plate, and the limiting rod is slidably connected to the side wall of the bracket.

[0019] A method for color difference calibration and screening of color printed products, comprising the following steps:

[0020] (a) Place the color printed product to be screened on the top surface of the conveyor belt. At this time, the driving motor drives the support roller to rotate to make the conveyor belt run and transport the color printed product.

[0021] (b) When the printed product passes between the two correction plates, the drive motor 3 drives the bidirectional screw to rotate. At this time, the bidirectional screw drives the two correction plates to move closer to each other. At this time, the printed product can be clamped and calibrated so that the printed product is in the middle of the conveyor belt. At this time, the camera can be driven to take a picture of the printed product to check the color difference;

[0022] (c) When the two correction plates approach each other, the two extrusion plates also approach each other, which in turn drives the support rods on both sides to squeeze the sliding frame. At this time, the sliding frame drives the fill light to move closer to the bracket;

[0023] (d) When the extrusion plates on both sides are close to each other, the support rod 2 will be squeezed at this time, so that the mounting plate can be squeezed out, and the camera is moved down close to the color printed product.

[0024] The present invention provides a device and method for color print color difference calibration and screening, which has the following beneficial effects:

[0025] 1. The present invention drives the bidirectional screw to rotate by driving motor 3, which drives the correction plates on both sides to approach each other to correct the position of the color printed product, and the extrusion mechanism will move synchronously with the bidirectional screw and drive the fill light to move. Therefore, the position of the fill light can be adjusted while calibrating the position of the color printed product, thereby ensuring the lighting conditions and improving the accuracy of the calibration.

[0026] 2. The present invention drives the correction plate and the fill light to move while the bidirectional screw drives the extrusion plate to move. At this time, the extrusion plate will also synchronously squeeze the support rod 2. At this time, the support rod 2 can be used to squeeze the mounting plate, thereby driving the mounting plate to move the position. At this time, the mounting plate can drive the camera to move the position, thereby adjusting the distance between the camera and the color print. Therefore, when calibrating the position of the color print, the positional relationship between the fill light and the camera and the color print is synchronously adjusted, thereby further improving the accuracy of color difference calibration.

[0027] 3. The present invention can drive a sprocket to rotate by driving motor 2. At this time, one sprocket can drive the chain to operate, thereby causing multiple sprockets and multiple conveying rollers to rotate synchronously. Therefore, after the color difference check of the color printed products is completed, the color printed products can be conveyed, and the forward and reverse rotation of motor 2 can be used to distinguish between qualified and unqualified color printed products, thereby improving the convenience of partitioned storage after the color difference check of the color printed products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 This is a diagram showing the structure of the base portion of the present invention;

[0030] Figure 3 This is a partial structural exploded view of the transfer mechanism of the present invention;

[0031] Figure 4 It is a partial structural diagram of the extrusion mechanism of the present invention;

[0032] Figure 5 This is a disassembled diagram of the splint structure of the present invention;

[0033] Figure 6 This is a diagram showing a portion of the support rod structure of the present invention;

[0034] Figure 7 This is a diagram showing the two-part structure of the support rod of the present invention;

[0035] Figure 8 This is a partial structural breakdown diagram of the bracket of the present invention.

[0036] Among them, 1. Base; 101. Motor 1; 102. Support roller; 103. Conveyor belt; 104. Embedded groove; 2. Transfer mechanism; 201. Transfer frame; 202. Conveyor roller; 203. Sprocket; 204. Chain; 205. Motor 2; 3. Bracket; 4. Motor 3; 5. Bidirectional screw; 6. Correction plate; 7. Extrusion mechanism; 701. Extrusion plate; 702. Support rod 1; 703. Slide frame; 704. Support block; 705. Support rod; 706. Support 1; 707. Clamp rod 1; 8. Fill light; 9. Camera; 10. Mounting plate; 11. Guide rod; 12. Support 2; 13. Support rod 2; 14. Clamp rod 2; 15. Limit rod. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In order to better understand the present invention, the above contents are described in detail below in conjunction with specific embodiments.

[0039] Please see the attached Figures 1-8 An embodiment of the present invention provides a color difference calibration and screening device for color printed products, including: a base 1, in which a conveyor belt 103 is installed for conveying color printed products; a bracket 3, which is located in the middle of the base 1, and a motor 4 is installed on the top of the bracket 3 for driving a bidirectional screw 5 to rotate; a correction plate 6, which is connected to the two side ends of the bidirectional screw 5 and is used to move as the bidirectional screw 5 rotates; an extrusion mechanism 7, which is connected to both sides of the middle of the bidirectional screw 5 and is used to drive a fill light 8 to move as the bidirectional screw 5 rotates; a camera 9, which is located below the bidirectional screw 5 and is used to calibrate the color printed products.

[0040] In this embodiment, the color printed product to be checked can be transported by the conveyor belt 103, and after the driving motor 3 4 drives the bidirectional screw 5 to rotate, the correction plates 6 on both sides can be driven to approach each other to correct the position of the color printed product. Then, the camera 9 can be turned on to take a picture of the color printed product, so as to perform color difference correction. At this time, the extrusion mechanism 7 drives the fill light 8 to move along with the rotation of the bidirectional screw 5, thereby achieving the purpose of synchronously adjusting the position of the fill light 8 when calibrating the position of the color printed product. Therefore, when the color printed product is undergoing color difference correction, the fill light 8 can always provide sufficient lighting conditions, thereby improving the accuracy of color difference correction of the color printed product.

[0041] Please see the attached Figure 1-Figure 3 Support rollers 102 are rotatably connected to both sides of the interior of the base 1. A motor 101 is mounted on the exterior of the base 1. The output end of the motor 101 is fixedly connected to one of the support rollers 102, and the two support rollers 102 are located on either side of the inner wall of the conveyor belt 103. A transfer mechanism 2 is disposed on the exterior of the base 1. The transfer mechanism 2 includes a transfer frame 201. A plurality of conveyor rollers 202 are mounted inside the transfer frame 201. A sprocket 203 is mounted on one side of each of the plurality of conveyor rollers 202. The plurality of sprockets 203 are connected by a chain 204. A motor 205 is mounted on one side of the transfer frame 201. The output end of the motor 205 is connected to one of the sprockets 203. A slot 104 is formed on one side of the exterior of the base 1. The outer wall of the transfer frame 201 contacts the inner wall of the slot 104.

[0042] In this embodiment, the support roller 102 can be driven to rotate by driving motor 101. At this time, the support roller 102 can drive the conveyor belt 103 to run, and then the color printed product is transported to the bottom of the bracket 3. After the color printed product verification is completed, the conveyor belt 103 continues to transport the color printed product to the conveyor roller 202, and then the driving motor 205 drives the sprocket 203 and the chain 204 to operate. At this time, multiple conveyor rollers 202 can be rotated synchronously, and through the forward and reverse rotation of motor 205, qualified and unqualified color printed products can be transported in different directions respectively, thereby achieving the distinction between qualified and unqualified color printed products.

[0043] Please see the attached Figure 4-Figure 6The extrusion mechanism 7 includes an extrusion plate 701. The middle portion of the extrusion plate 701 is threadedly connected to the bidirectional screw 5. The top surface of the extrusion plate 701 is slidably connected to the top surface of the inner wall of the bracket 3. One side of the extrusion plate 701 is rotatably connected to a support rod 1 702. One side of the support rod 1 702 is rotatably connected to a slide frame 703. The middle portion of the slide frame 703 is slidably connected to a support rod 705. One side of the support rod 705 is fixedly connected to a support block 704. The top surface of the support block 704 is fixedly connected to the top surface of the inner wall of the bracket 3. The fill light 8 is fixedly connected to the bottom surface of the slide frame 703. Support 1 706 is installed on the sides of the slide frame 703 and the extrusion plate 701. Both sides of the support rod 1 702 are fixedly connected to a clamping rod 1 707. The clamping rod 1 707 and the support 1 706 are rotatably connected. A through hole is provided in the middle portion of the slide frame 703. The outer wall of the support rod 705 is slidably connected to the inner wall of the through hole.

[0044] When the two-way screw 5 drives the correction plate 6 to correct the position of the color printed product, the extrusion plates 701 will also move closer to each other as the two-way screw 5 rotates. At this time, the extrusion plates 701 on both sides will squeeze the support rod 1 702, causing the clamping rod 1 707 to rotate inside the support 1 706. At this time, the extrusion force will be transmitted to the sliding frame 703, thereby causing the sliding frame 703 to slide along the support rod 705. At this time, the sliding frame 703 will drive the fill light 8 to move. Therefore, when the position of the color printed product is corrected, the position adjustment of the fill light 8 is realized synchronously. By controlling the spacing between the correction plates 6 on both sides, the position of color printed products of different sizes can be corrected. The extrusion plate 701 can move along with the displacement of the correction plate 6, so that the position of the fill light 8 can be adjusted synchronously with the size of the color printed product. Therefore, when calibrating color printed products of different sizes, sufficient lighting conditions can always be provided, thereby ensuring the accuracy of color difference calibration of color printed products.

[0045] Please see the attached Figure 4-Figure 8 The camera 9 is externally mounted with a mounting plate 10. A guide rod 11 is fixedly connected to the top surface of the mounting plate 10, which is slidably connected to the middle of the bracket 3. A second support 12 is fixedly connected to the middle of the bottom surface of the extrusion plate 701 and the side of the mounting plate 10 near the extrusion plate 701. A second clamping rod 14 is rotatably connected to the middle of each of the two supports 12. The two clamping rods 14 are fixedly connected to each other via a second support rod 13. A limit rod 15 is fixedly connected to the middle of the correction plate 6, which is slidably connected to the side wall of the bracket 3.

[0046] In this embodiment, when the extrusion plate 701 moves, the extrusion plate 701 will also synchronously squeeze the support rod 2 13. At this time, the clamping rod 2 14 can rotate inside the clamping seat 2, so that the extrusion force can be transmitted to the mounting plate 10, and then the mounting plate 10 drives the guide rod 11 to slide inside the bracket 3. At this time, the position of the color print can be corrected and the position of the fill light 8 can be adjusted while the distance between the camera 9 and the color print can be adjusted synchronously. When calibrating color prints of different sizes, the extrusion plate 701 moves along with the displacement of the correction plate 6, and will also synchronously drive the position of the camera 9. At this time, the distance between the real-time camera 9 and the color print is adjusted.

[0047] This embodiment also provides a method for using the above device, including the following steps:

[0048] (a) Place the color printed product to be screened on the top surface of the conveyor belt 103. At this time, the driving motor 101 drives the support roller 102 to rotate to make the conveyor belt 103 run and transport the color printed product;

[0049] (b) When the color printed product passes between the two side correction plates 6, the driving motor 3 4 drives the bidirectional screw 5 to rotate. At this time, the bidirectional screw 5 drives the two side correction plates 6 to move closer to each other. At this time, the color printed product can be clamped and the position can be calibrated so that the color printed product is in the middle of the conveyor belt 103. At this time, the camera 9 can be driven to take a picture of the color printed product to check the color difference;

[0050] (c) When the two correction plates 6 approach each other, the two extrusion plates 701 also approach each other, thereby driving the support rods 702 on both sides to squeeze the sliding frame 703. At this time, the sliding frame 703 drives the fill light 8 to move closer to the bracket 3;

[0051] (d) When the extrusion plates 701 on both sides are close to each other, the second support rod 13 is also squeezed, thereby squeezing out the mounting plate 10, and then the camera 9 is moved down close to the color printed product.

[0052] Working principle: First, the color printed product to be inspected is placed on the top surface of the conveyor belt 103. At this time, the drive motor 101 is started, and the motor 101 can drive the support roller 102 to rotate, thereby driving the conveyor belt 103 to run. Then, the color printed product to be inspected can be transported. At this time, it is directly below the bracket 3 and between the two correction plates 6.

[0053] When the color print is between the two correction plates 6, the drive motor 3 4 starts running, and the motor 3 4 drives the bidirectional screw 5 to rotate. The rotation of the bidirectional screw 5 drives the correction plates 6 on both sides to move closer to each other, thereby clamping and calibrating the position of the color print on the conveyor belt 103 so that it is directly below the bracket 3. At this time, the camera 9 starts to capture the image of the color print to perform color difference correction;

[0054] As the correction plates 6 on both sides approach each other, the rotation of the bidirectional screw 5 will also drive the extrusion plates 701 on both sides to move closer to each other. As the extrusion plates 701 on both sides move closer to each other, the support rod 1 702 will be pushed, thereby driving the sliding frame 703 to slide along the support rod 705 and move closer to the bracket 3. At this time, the sliding frame 703 will also drive the fill light 8 to move closer to the bracket 3, thereby achieving the purpose of adjusting the position of the fill light 8, thereby ensuring a uniform light source and preventing ambient light from interfering with the accuracy of chromatic aberration calibration.

[0055] When the squeezing plates 701 on both sides approach each other, the support rod 13 of the squeezing plate 701 is also squeezed, and the mounting plate 10 is pushed to slide along the wire rod. At this time, the camera 9 can be driven to gradually move downward, so as to approach the color print. Therefore, the distance between the camera 9 and the color print can be adjusted, thereby achieving simultaneous adjustment of the distance between the fill light 8 and the camera 9 and the color print while calibrating the position of the color print, thereby improving the accuracy of color error correction.

[0056] And when the color difference check of the color prints is completed, as the conveyor belt 103 transports the color prints, the color prints will be transported to the conveying roller 202. At this time, the driving motor 205 can drive the sprocket 203 to rotate, and then drive the chain 204 to make multiple sprockets 203 and multiple conveying rollers 202 rotate synchronously. Through the forward and reverse rotation of the motor 205, qualified and unqualified color prints can be transported in different directions respectively, thereby realizing the distinction between qualified and unqualified color prints.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A color print color difference checking and screening device, characterized in that: include: A base (1) is provided with a conveyor belt (103) inside thereof for conveying color printed products; A bracket (3) is located in the middle of the base (1), and a motor (4) is installed on the top of the bracket (3) for driving the bidirectional screw (5) to rotate; A correction plate (6) connected to the ends of both sides of the bidirectional screw (5) and used for moving along with the rotation of the bidirectional screw (5); An extrusion mechanism (7) is connected to both sides of the middle of the bidirectional screw (5) and is used to drive the fill light (8) to move along with the rotation of the bidirectional screw (5); The camera (9) is located below the bidirectional screw (5) and is used to check the color printed product.

2. The color print color difference checking and screening device according to claim 1, characterized in that: Support rollers (102) are rotatably connected on both sides of the base (1), and a motor (101) is installed on the outside of the base (1). The output end of the motor (101) is fixedly connected to one of the support rollers (102), and the support rollers (102) on both sides are respectively located on both sides of the inner wall of the conveyor belt (103).

3. The color print color difference checking and screening device according to claim 1, characterized in that: A transfer mechanism (2) is arranged outside the base (1), and the transfer mechanism (2) comprises a transfer frame (201), and a plurality of conveying rollers (202) are installed inside the transfer frame (201), and a sprocket (203) is installed on one side of the plurality of conveying rollers (202), and the plurality of sprockets (203) are connected by a chain (204), and a second motor (205) is installed on one side of the transfer frame (201), and the output end of the second motor (205) is connected to one of the sprockets (203).

4. The color difference checking and screening device for color printed products according to claim 3, characterized in that: An embedding groove (104) is provided on one side of the exterior of the base (1), and the outer wall of the transfer frame (201) is in contact with the inner wall of the embedding groove (104).

5. The color print color difference checking and screening device according to claim 1, characterized in that: The extrusion mechanism (7) comprises an extrusion plate (701), the middle part of the extrusion plate (701) is threadedly connected to the bidirectional screw (5), the top surface of the extrusion plate (701) is slidably connected to the top surface of the inner wall of the bracket (3), one side of the extrusion plate (701) is rotatably connected to a support rod (702), one side of the support rod (702) is rotatably connected to a sliding frame (703), the middle part of the sliding frame (703) is slidably connected to a support rod (705), one side of the support rod (705) is fixedly connected to a support block (704), the top surface of the support block (704) is fixedly connected to the top surface of the inner wall of the bracket (3), and the fill light (8) is fixedly connected to the bottom surface of the sliding frame (703).

6. The color difference checking and screening device for color printed products according to claim 5, characterized in that: A support (706) is installed on the adjacent sides of the sliding frame (703) and the extrusion plate (701), and a clamping rod (707) is fixedly connected to both sides of the support rod (702), and the clamping rod (707) and the support (706) are rotatably connected, and a through hole is provided in the middle of the sliding frame (703), and the outer wall of the support rod (705) is slidably connected to the inner wall of the through hole.

7. The color difference checking and screening device for color printed products according to claim 6, characterized in that: A mounting plate (10) is installed outside the camera (9), a top surface of the mounting plate (10) is fixedly connected to a guide rod (11), and the guide rod (11) is slidably connected to the middle part of the bracket (3).

8. The color print color difference checking and screening device according to claim 7, characterized in that: The middle part of the bottom surface of the extrusion plate (701) and the side of the mounting plate (10) close to the extrusion plate (701) are both fixedly connected with a support seat (12), and the middle parts of the support seats (12) on both sides are rotatably connected with a clamping rod (14), and the clamping rods (14) on both sides are fixedly connected via a support rod (13).

9. The color print color difference checking and screening device according to claim 1, characterized in that: A limiting rod (15) is fixedly connected to the middle of the correction plate (6), and the limiting rod (15) is slidably connected to the side wall of the bracket (3).

10. A method for color print color difference calibration and screening, based on a color print color difference calibration and screening device according to any one of claims 1 to 9, characterized in that: The following steps are involved: (a) placing the color printed products to be screened on the top surface of the conveyor belt (103), and then driving the motor 1 (101) to drive the supporting roller (102) to rotate the conveyor belt (103) to transport the color printed products; (b) When the color print passes between the correction plates (6) on both sides, the driving motor 3 (4) drives the bidirectional screw (5) to rotate. At this time, the bidirectional screw (5) drives the correction plates (6) on both sides to approach each other. At this time, the color print can be clamped and the position can be calibrated so that the color print is in the middle of the conveyor belt (103). At this time, the driving camera (9) can take a picture of the color print to check the color difference; (c) When the correction plates (6) on both sides are close to each other, the extrusion plates (701) on both sides will also be close to each other, thereby driving the support rods (702) on both sides to squeeze the sliding frame (703), and the sliding frame (703) will drive the fill light (8) to approach the bracket (3); (d), and after the squeezing plates (701) on both sides are close to each other, the second support rod (13) will also be squeezed, so that the mounting plate (10) can be squeezed out, and then the camera (9) is moved down to be close to the color print.

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