Printing quality on-line detection device of printing machine

Abstract

The utility model discloses a printing quality on-line detection device of a printing machine, which relates to the technical field of printing quality detection and comprises a support and a CCD (charge coupled device) camera, the CCD camera is fixedly mounted on one side of the support, a light supplementing module is arranged on one side of the support and comprises a connecting seat, a light supplementing lamp, a motor, a first support arm group and a second support arm group, according to the utility model, the CCD camera is electrified to work to collect images of printed matters, the gear is driven by the motor to drive the group of light supplementing lamps connected with the gear to do fan-shaped motion, the first support arm group and the second support arm group have the same structure and are in mirror symmetry, the gear in the first support arm group is meshed with the gear in the second support arm group, and the light supplementing lamps are driven by the motor to do fan-shaped motion. Therefore, the two groups of light supplementing lamps are close to each other or far away from each other, the illumination range is reduced or expanded, light supplementing can be carried out on printed matters with different sizes, and the application range is further expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing quality detection technical field especially relates to a printing machine printing quality on -line detection device. BACKGROUND

[0002] With the continuous development of printing technology and the increasingly fierce market competition, the quality requirement of printed matter is higher and higher. Whether it is packaging printing, book printing or advertising printing field, it has strict standards for printing quality. Consumers' requirements for color accuracy, pattern definition, register accuracy and other aspects of printed matter are continuously improved, and printing enterprises need effective quality detection means to ensure the quality of printed matter in order to meet market demand and improve their competitiveness.

[0003] In recent years, image recognition technology has developed rapidly. High-resolution acquisition cameras and advanced image processing algorithms can quickly and accurately capture image information of printed matter and analyze and process it. By comparing the printed matter image with the standard image, various quality problems such as color deviation, pattern loss and misregistration can be automatically identified, providing a technical basis for online printing quality detection, but in the case of insufficient light, the CCD camera will increase the gain value in order to obtain sufficient signal intensity. But this will increase the noise of the camera, which will appear as a large number of noise points in the image. These noise points will interfere with the observation and analysis of the printed matter image, making it difficult for the detection system to accurately identify the true information in the image, increasing the possibility of misjudgment and missed judgment. UTILITARIAN CONTENT

[0004] The utility model aims at solving the problems in the prior art and provides a printing machine printing quality on-line detection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a printing machine printing quality on-line detection device, comprising a support and a CCD camera, the CCD camera is fixedly installed on one side of the support, one side of the support is provided with a light supplementing module, the light supplementing module comprises a connecting seat, a light supplementing lamp, a motor, a first arm group and a second arm group, two groups of the light supplementing lamps are respectively distributed on both sides of the head of the CCD camera, and the two groups of light supplementing lamps are respectively installed at both ends of the first arm group and the second arm group through bolts, the other ends of the first arm group and the second arm group are engaged and rotatably installed in the inside of the connecting seat, and the motor is in transmission connection with the other end of the first arm group.

[0006] Preferably, the first arm group and the second arm group are the same in structure and are mirror-symmetrical.

[0007] Preferably, the first arm group comprises a gear, a connecting rod, an auxiliary side arm and a main connecting arm, the gear is rotatably installed in the connecting seat, and the output shaft of the motor is fixedly connected with the shaft portion of the gear.

[0008] Preferably, one end of the connecting rod is fixedly connected with the middle portion of the gear, and the other end of the connecting rod is rotatably connected with the auxiliary side arm.

[0009] Preferably, the main connecting arm is rotatably connected with the connecting seat, and the other end of the auxiliary side arm is rotatably connected with the other end of the main connecting arm.

[0010] Preferably, the light supplementing lamp is fixedly connected with the other end of the main connecting arm.

[0011] Preferably, the end portion of the connecting seat is fixedly connected with a side frame, one side of the side frame is fixedly connected with a partition strip, and the partition strip is fixedly connected with one side of the support.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1、in the utility model, the CCD camera is powered on to work, and image acquisition is carried out on the printed matter, the gear drives a group of light supplementing lamps connected with the gear to make fan-shaped movement under the drive of the motor, the first arm group and the second arm group are the same in structure and are mirror image symmetry, the gear in the first arm group meshes with the gear in the second arm group, thereby synchronously driving the second arm group to make reverse fan-shaped movement, and the other group of light supplementing lamps also makes reverse fan-shaped movement, so that the two groups of light supplementing lamps are close to or away from each other, and the illumination range is reduced or enlarged, and light supplementing can be carried out on printed matters of different sizes, and the application range is further improved.

[0014] 2、in the utility model, the partition strip is provided with concave-convex grooves on both sides, is used for connecting the side frame and the support, thereby completing the installation of the light supplementing module, and the partition strip can slide between the side frame and the partition strip, so that the distance between the light supplementing lamp and the head of the CCD camera can be adjusted according to the actual use condition, and the applicability is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 a three-dimensional structure schematic view of the online detection device for printing quality of the printing machine is provided for the utility model;

[0016] Figure 2 a three-dimensional structure schematic view of the online detection device for printing quality of the printing machine is provided for the utility model;

[0017] Figure 3 a three-dimensional structure schematic view of the online detection device for printing quality of the printing machine is provided for the utility model;

[0018] Figure 4This invention presents a three-dimensional structural diagram of a partially disassembled supplementary lighting module in an online printing quality inspection device for printing machines.

[0019] Legend: 1. Support frame; 11. Spacer bar; 12. Side frame; 2. CCD camera; 3. Lighting module; 31. Connecting seat; 32. Lighting lamp; 33. Motor; 34. First support arm assembly; 341. Gear; 342. Connecting rod; 343. Auxiliary side arm; 344. Main connecting arm; 35. Second support arm assembly. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides an online printing quality inspection device for a printing press, including a bracket 1 and a CCD camera 2. The CCD camera 2 is fixedly installed on one side of the bracket 1. A supplementary lighting module 3 is provided on one side of the bracket 1. The supplementary lighting module 3 includes a connecting seat 31, supplementary lights 32, a motor 33, a first support arm assembly 34, and a second support arm assembly 35. The two sets of supplementary lights 32 are respectively distributed on both sides of the head of the CCD camera 2, and the two sets of supplementary lights 32 are respectively installed at the ends of the first support arm assembly 34 and the second support arm assembly 35 by bolts. The other ends of the first support arm assembly 34 and the second support arm assembly 35 are engaged and rotatably installed inside the connecting seat 31. The motor 33 is connected to the first support arm assembly 34. The other end is connected by a transmission. The first arm group 34 and the second arm group 35 have the same structure and are mirror-symmetrical. The first arm group 34 includes a gear 341, a connecting rod 342, an auxiliary side arm 343 and a main connecting arm 344. The gear 341 is rotatably installed inside the connecting seat 31. The output shaft of the motor 33 is fixedly connected to the shaft of the gear 341. One end of the connecting rod 342 is fixedly connected to the middle of the gear 341. The other end of the connecting rod 342 is rotatably connected to the auxiliary side arm 343. The main connecting arm 344 is rotatably connected to the connecting seat 31. The other end of the auxiliary side arm 343 is rotatably connected to the other end of the main connecting arm 344. The supplementary light 32 is fixedly connected to the other end of the main connecting arm 344.

[0023] The specific settings and functions of this embodiment are described below: When the printed matter is output from the outlet after printing, the CCD camera 2 is powered on to capture images of the printed matter, thereby realizing online detection. The control motor 33 is started, and the output shaft of the motor 33 drives the gear 341 to rotate. The gear 341 drives the connecting rod 342 to make a fan-shaped movement. Under the connection of the auxiliary arm 343, the main connecting arm 344 is driven to make a fan-shaped movement, thereby driving a set of supplementary lights 32 connected to it to make a fan-shaped movement. The first arm group 34 and the second arm group 35 have the same structure and are mirror symmetrical. The gear 341 in the first arm group 34 meshes with the gear 341 in the second arm group 35, thereby synchronously driving the second arm group 35 to make a reverse fan-shaped movement. The other set of supplementary lights 32 also makes a reverse fan-shaped movement. Thus, the two sets of supplementary lights 32 move closer or further away from each other, reducing or expanding the illumination range, so that supplementary lighting can be provided for printed matter of different sizes, further improving the applicability.

[0024] Example 2: Figure 1 - Figure 3 As shown, the CCD camera 2 is fixedly mounted on one side of the bracket 1. A supplementary lighting module 3 is provided on one side of the bracket 1. The supplementary lighting module 3 includes a connecting seat 31, a supplementary light 32, a motor 33, a first support arm group 34, and a second support arm group 35. A side frame 12 is fixedly connected to the end of the connecting seat 31. A spacer 11 is fixedly connected to one side of the side frame 12. The spacer 11 is fixedly connected to one side of the bracket 1.

[0025] The overall effect of this embodiment is that the connecting seat 31 is inserted into the protruding part of the side frame 12 and fixed with bolts. The spacer 11 has two kinds of grooves, concave and convex, on both sides for connecting the side frame 12 and the bracket 1, thereby completing the installation of the fill light module 3. The spacer 11 can slide between the side frame 12 and the spacer 11, so the distance between the fill light 32 and the head of the CCD camera 2 can be adjusted according to the actual use, making it more versatile.

[0026] The method for using and the working principle of the device: the device is installed at the outlet of the printing machine through the support 1, the CCD camera 2 is vertically located above the printed matter, when the printed matter is output from the outlet after printing is completed, the CCD camera 2 is powered on to work, the image of the printed matter is collected, thus online detection is realized, the motor 33 is controlled to start, the output shaft of the motor 33 drives the gear 341 to rotate, the gear 341 drives the connecting rod 342 to make a sector motion, under the connecting action of the auxiliary side arm 343, the main connecting arm 344 is driven to make a sector motion, thus a group of the light supplementing lamps 32 connected with the main connecting arm 344 are driven to make a sector motion, the first arm group 34 and the second arm group 35 are the same in structure and are mirror-symmetrical, the gear 341 in the first arm group 34 meshes with the gear 341 in the second arm group 35, thus the second arm group 35 is synchronously driven to make a reverse sector motion, the other group of the light supplementing lamps 32 also make a reverse sector motion, thus the two groups of the light supplementing lamps 32 are close to or away from each other, the light illumination range is reduced or expanded, the light supplementing can be carried out on the printed matters of different sizes.

[0027] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms, any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belong to the protection scope of the present application technical scheme.

Claims

1. A printing quality on-line detection device for printing machines, comprising a support (1) and a CCD camera (2), characterized in that: The CCD camera (2) is fixedly installed on one side of the support (1), one side of the support (1) is provided with a light supplementing module (3), the light supplementing module (3) comprises a connecting seat (31), light supplementing lamps (32), a motor (33), a first supporting arm group (34) and a second supporting arm group (35), two groups of the light supplementing lamps (32) are distributed on two sides of the head of the CCD camera (2) respectively, and the two groups of light supplementing lamps (32) are respectively installed at the two ends of the first supporting arm group (34) and the second supporting arm group (35) through bolts, the other ends of the first supporting arm group (34) and the second supporting arm group (35) are engaged and rotatably installed in the connecting seat (31), and the motor (33) is in transmission connection with the other end of the first supporting arm group (34).

2. The printing quality on-line detection device of the printing machine according to claim 1, characterized in that: The first supporting arm group (34) and the second supporting arm group (35) are the same in structure and are mirror-symmetric.

3. The printing quality on-line detection device of a printing press according to claim 2, characterized in that: The first supporting arm group (34) comprises a gear (341), a connecting rod (342), an auxiliary side arm (343) and a main connecting arm (344), the gear (341) is rotatably installed in the connecting seat (31), and the output shaft of the motor (33) is fixedly connected with the shaft portion of the gear (341).

4. The printing quality on-line detection device of claim 3, wherein: One end of the connecting rod (342) is fixedly connected with the middle portion of the gear (341), and the other end of the connecting rod (342) is rotatably connected with the auxiliary side arm (343).

5. The printing quality on-line detection device of a printing press according to claim 4, characterized in that: The main connecting arm (344) is rotatably connected with the connecting seat (31), and the other end of the auxiliary side arm (343) is rotatably connected with the other end of the main connecting arm (344).

6. The printing quality on-line detection device of a printing press according to claim 5, characterized in that: The light supplementing lamp (32) is fixedly connected with the other end of the main connecting arm (344).

7. The printing quality on-line detection device of claim 1, wherein: The end of the connecting seat (31) is fixedly connected with a side frame (12), one side of the side frame (12) is fixedly connected with a partition strip (11), and the partition strip (11) is fixedly connected with one side of the support (1).

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