Nozzle orifice blockage detection device for ink-jet printer

Abstract

The utility model relates to the technical field of ink-jet printers, and discloses a nozzle orifice blockage detection device for an ink-jet printer, which comprises a printer body and a bearing nozzle and is provided with an orifice for jetting ink. Two groups of racks are arranged on the machine body and are provided with high-speed line-scan digital cameras; a color mark sensor under the left camera detects the back surface, and a color mark sensor under the right camera detects the front surface. A detector is installed on the machine body. The high-speed line-scan digital camera is triggered and captures the printed test strip pattern, and then the test strip pattern is compared with a standard complete test strip for analysis. The detector can monitor the condition of the spray hole of the spray head in real time and timely find and give an alarm about the blockage problem of the spray hole, so that the printing quality problem and the production loss caused by blockage of the spray hole are avoided. Through the cooperative use of the high-speed linear array camera and the color code sensor, the blockage position of the spray hole can be accurately detected, the detection efficiency and accuracy are improved, the output of unqualified products is prevented, the automatic detection process is realized, and the workload of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet printers, and particularly to a nozzle clogging detection device for an inkjet printer head. Background Art

[0002] During the printing process of an inkjet printer, the software control system guides the print head to precisely eject tiny ink droplets onto the paper to form the required patterns and texts. The surface of the print head is covered with numerous tiny nozzles. In an ideal state, these nozzles are unclogged and can achieve high-quality printing effects. However, in actual operation, due to the influence of various factors such as the temperature and humidity of the equipment environment, the complexity of the printed content, and the quality of the ink, the nozzles on the surface of the print head may become clogged, which will hinder the normal inkjet process and thus affect the printing quality. If the clogging of the nozzles cannot be detected in time during high-speed printing, it may lead to the printed content not meeting the requirements, resulting in product scrapping and seriously interfering with the production process.

[0003] Therefore, based on the above technical problems, it is necessary for those skilled in the art to develop a nozzle clogging detection device for an inkjet printer. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a nozzle clogging detection device for an inkjet printer to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A technical solution of a nozzle clogging detection device for an inkjet printer includes a printing body for carrying a print head. The print head is provided with a plurality of nozzles for ejecting ink. Two groups of racks are symmetrically arranged on the printing body. High-speed linear cameras are installed on both groups of racks. A color mark sensor for detecting the back side is arranged below the high-speed linear camera on the left side, and a color mark sensor for detecting the front side is arranged below the high-speed linear camera on the right side. A detector is installed on the printing body.

[0007] As a preferred technical solution, an alarm is arranged on the top of the printing body, and the alarm is connected to the detector.

[0008] As a preferred technical solution, the detector is connected to the printing body, the high-speed linear camera, and the color mark sensor.

[0009] As a preferred technical solution, the color mark sensor is used to collect the test strip pattern, the high-speed linear array camera is used to compare the collected test strip pattern with the complete test strip. The test strip pattern is composed of two non-connected rows of straight lines, and each straight line corresponds to the nozzle hole of a nozzle. The detector has a built-in algorithm for analyzing the comparison result and judging whether the nozzle hole is blocked.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] The present utility model is a nozzle hole blockage detection device for an inkjet printer. The high-speed linear array camera will be triggered to capture the printed test strip pattern, and then compare and analyze it with the standard complete test strip. The detector can monitor the condition of the nozzle holes of the nozzle in real time, timely detect and alarm the nozzle hole blockage problem, thereby avoiding the printing quality problems and production losses caused by nozzle hole blockage. By using the high-speed linear array camera and the color mark sensor in cooperation, the position of the nozzle hole blockage can be accurately detected, the detection efficiency and accuracy are improved, and the output of unqualified products is prevented. In addition, for printing tasks with lower quality standards, the system allows adjustment of the sensitivity threshold of the blockage alarm to realize an automated detection process, reducing the work burden of operators. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the overall structure of a nozzle hole blockage detection device for an inkjet printer;

[0013] Figure 2 It is a schematic diagram of the detection principle structure of a nozzle hole blockage detection device for an inkjet printer;

[0014] Figure 3 It is a schematic diagram of the module structure of a nozzle hole blockage detection device for an inkjet printer.

[0015] In the reference numerals: 1, printing machine body; 2, frame; 21, color mark sensor; 22, high-speed linear array camera; 3, detector; 4, alarm. Detailed Embodiments

[0016] The features and exemplary embodiments of various aspects of the present utility model will be described in detail below. In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments. For those skilled in the art, the present utility model can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present utility model by showing examples of the present utility model.

[0017] Such as Figure 1 、 Figure 2 AndFigure 3 As shown in the figure, the utility model provides a technical solution for a nozzle clogging detection device for an inkjet printer: including a printing body 1, the printing body 1 is used to carry a nozzle, the nozzle is provided with a plurality of nozzle holes for jetting ink, two groups of frames 2 are symmetrically arranged on the printing body 1, a high-speed linear array camera 22 is installed on each of the two groups of frames 2, a color mark sensor 21 for detecting the back side is arranged below the high-speed linear array camera 22 on the left side, and a color mark sensor 21 for detecting the front side is arranged below the high-speed linear array camera 22 on the right side. A detector 3 is installed on the printing body 1. The detector 3 is connected to the printing body 1, the high-speed linear array camera 22 and the color mark sensor 21. The color mark sensor 21 is used to collect the test strip pattern, and the high-speed linear array camera 22 is used to compare the collected test strip pattern with the complete test strip. The test strip pattern is composed of two non-connected rows of straight lines, and each straight line corresponds to a nozzle hole of a nozzle. The detector 3 has a built-in algorithm for analyzing the comparison result and judging whether the nozzle hole is clogged.

[0018] In the specific implementation, through the cooperation with the color mark sensor 21 and the high-speed linear array camera 22, the detector 3 can monitor the condition of the nozzle holes of the nozzle in real time. When a nozzle hole clogging is detected, the detector 3 will trigger an alarm 4 to emit an audible and visual alarm signal to remind the operator to handle the nozzle hole clogging problem in time. In addition, the detector 3 can also record the number and position of the nozzle hole clogging occurrences, providing data support for subsequent maintenance and adjustment.

[0019] In practical applications, the utility model can be seamlessly docked with the control system of the inkjet printer to achieve automatic detection and alarm. When the inkjet printer is started, the detector 3 will automatically perform a detection of the nozzle hole state to ensure that the nozzle is in the best working state. During the printing process, the detector 3 will continuously monitor the nozzle hole state. Once an abnormality is found, it will immediately give an alarm and record relevant information.

[0020] The nozzle clogging detection device provided by the utility model has the advantages of high efficiency, accuracy, easy operation, etc., can significantly improve the printing quality and production efficiency of the inkjet printer, reduce the production cost, and has a good application prospect.

[0021] According to the above solution, in this implementation, during the production process, the detector 3 will continuously monitor the jetting condition of the nozzle holes of the nozzle. Through the cooperation of the high-speed linear array camera 22 and the color mark sensor 21, the detector 3 can obtain the test strip pattern jetted by the nozzle holes in real time and compare it with the standard test strip. If the detector 3 finds that a nozzle hole is clogged, it will immediately trigger the alarm 4 to emit an audible and visual alarm signal, and at the same time record the specific nozzle hole position and time when the clogging occurs.

[0022] The alarm signal will remind the operator to check and clean in time to avoid printing quality problems caused by nozzle blockage. The operator can quickly locate the blocked nozzle according to the data recorded by the detector 3 and take corresponding maintenance measures, such as cleaning the nozzle or replacing the nozzle assembly.

[0023] The above content is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person with corresponding skills in the technical field, based on the technical framework and core concept disclosed by the present utility model, making equivalent replacements or modifications shall be included within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be clear that terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are only used for description based on the relative positions or directions shown in the drawings, aiming to simplify the description process, rather than limiting the actual positions, directions or structures of the devices or components. Therefore, they should not be regarded as a constraint on the present utility model.

[0025] At the same time, in the present utility model, unless otherwise clearly stated, terms such as "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. They may represent a fixed connection, a detachable connection, or even an integral molding of two components; they may represent a mechanical connection or an electrical connection; they may represent a direct connection or an indirect connection through a certain medium; they may also represent the internal communication between two components or their interaction relationship. For those skilled in the art, they should be able to understand the specific meanings of these terms in the present utility model according to the specific situation.

[0026] In addition, the embodiments described herein are only examples, aiming to better illustrate the basic principles and practical applications of the present utility model, rather than limiting its application scope. According to the above description, various forms of modifications and changes can be made. Therefore, all modifications, equivalent replacements, improvements, etc. made within the spirit and principle framework embodied by the present utility model shall be regarded as falling within the protection scope of the present utility model.

Claims

1. A nozzle orifice clogging detection device for an inkjet printer, characterized in that: The invention comprises a printing machine body (1), wherein the printing machine body (1) is used to carry a nozzle, wherein the nozzle is provided with a plurality of nozzle holes for spraying ink, wherein two sets of frames (2) are symmetrically arranged on the printing machine body (1), and high-speed line array cameras (22) are installed on both sets of frames (2), and a color mark sensor (21) for detecting the back side is arranged below the high-speed line array camera (22) on the left side, and a color mark sensor (21) for detecting the front side is arranged below the high-speed line array camera (22) on the right side, and a detector (3) is installed on the printing machine body (1).

2. The nozzle orifice clogging detection device for an inkjet printer according to claim 1, characterized in that: An alarm (4) is arranged on the top of the printing machine body (1), and the alarm (4) is connected to the detector (3).

3. The nozzle orifice clogging detection device for an inkjet printer according to claim 1, characterized in that: The detector (3) is connected to the printing machine body (1), the high-speed line array camera (22) and the color mark sensor (21).

4. The nozzle orifice clogging detection device for an inkjet printer according to claim 3, characterized in that: The color mark sensor (21) is used to collect a test strip pattern, and the high-speed linear array camera (22) is used to compare the collected test strip pattern with a complete test strip. The test strip pattern is composed of two upper and lower rows of unconnected straight lines, and each straight line corresponds to a nozzle of a nozzle. The detector (3) has a built-in algorithm for analyzing the comparison result and determining whether the nozzle is blocked.

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