Automatic code spraying and detecting system and process method thereof

Abstract

The invention discloses an automatic code spraying and detecting system which comprises a code spraying device (3). The automatic code spraying and detecting system is further provided with a belt conveying device (2) and a code scanning and detecting device (4), and the code spraying device (3) is arranged above the belt conveying device (2). And the code scanning detection device (4) is arranged at the tail end of the belt conveying device (2). The invention further discloses a process method of the automatic code spraying and detecting system. By adopting the technical scheme, the code spraying automation degree and the code spraying speed of an ultra-thin glass product are improved, and the production efficiency is improved; the identification and detection precision is improved, and the product quality is improved; the labor intensity and the production cost are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of manufacturing technology and equipment of electronic product display devices. More specifically, the present invention relates to an automatic coding and detection system. The present invention also relates to a process method of the automatic coding and detection system. Background Art

[0002] With the upgrading of electronic products, glass has been widely used in the electronics industry. The market has increasingly thinned the thickness of the protective glass for touch screen glass cover plates. Ultra-thin glass cover plates have attracted more and more attention from listed companies in the electronic display industry. Ultra-thin glass has become one of the important development trends of glass.

[0003] Ultra-thin glass (UTG) refers to glass with a thickness of less than 100μm and is flexible. Ultra-thin glass is mainly used in foldable mobile phones, foldable laptops and various wearable electronic devices.

[0004] UTG is widely used in various electronic industries due to its advantages such as high transparency, stability and impact resistance. Its easy-to-bend feature has marked a major milestone in the foldable display industry, becoming an important player in the field of foldable flexible cover panels after CPI cover panels.

[0005] At present, in the UTG production process, a set of codes are used to record the production stages it has gone through. After the product has gone through molding, strengthening, laminating, and bonding, each product needs to be coded, and the clear code and QR code are sprayed to record some detailed information such as the materials used in the production process. In the UTG product coding process, the clear code and QR code are very likely to have blurred codes, missing codes, wrongly printed codes, overlapping codes, etc.

[0006] Since the existing coding method is manual single-item coding, the production efficiency is low, and the design of automatic coding is imminent. The traditional production model still relies heavily on manual labor, which is not only inefficient and labor-intensive, but also prone to errors.

[0007] Since the current production of product coding needs to be carried out at a fixed position on the product, there are certain requirements for the accuracy of the coding position; personnel may not be able to meet the specific accuracy requirements during the operation, manual coding operation is inefficient, and when the number of production order products is large, more operators are required, which greatly increases the production cost; at the same time, manual operation cannot ensure that products with unqualified coding are completely picked out, which brings great hidden dangers to product quality.

[0008] Using keywords such as "glass; cover plate; inkjet printing" to search for existing public technical literature, the following search results were obtained:

[0009] 1. Chinese patent document: "An intelligent production line for precise positioning of glass cover plates, online coding and positioning rack", patent (application) number: 202110333194.7; the technical solution recorded is:

[0010] "The intelligent production line for precise positioning of glass cover plates, online coding, positioning and rack insertion includes a frame, on which a transmission component for intermittently conveying glass cover plates is installed, and a positioning coding mechanism is arranged on one side of the frame perpendicular to the transmission component. The positioning coding mechanism precisely positions and fixes the glass cover plates and sprays the codes after the transmission component conveys the glass cover plates to the preset workstations; the production line transfers the glass cover plates to the coding table through a vacuum adsorption device; the coding table sprays the glass cover plates; and then a manipulator with an adsorption device is used to locate and insert the racks";

[0011] The technical effects recorded are:

[0012] "It can keep the positioning tooling transported smoothly, thereby ensuring clear coding. At the same time, after the coding is completed, the robot can automatically insert the rack, reducing manpower, improving production efficiency, reducing the adverse phenomena caused by manual work, and ensuring product quality."

[0013] 2. Chinese patent document: "A laser coding device for display backlight", patent (application) number: 201822099124.6; the technical solution recorded is:

[0014] “The laser coding device for the display backlight panel includes: a base frame, a workbench, a screw slide, a slider A, a slider B, a fixture A, a fixture B and a laser coding device; the reciprocating motion of the screw slide drives the slider A and the slider B to move simultaneously; a blue fluorescent plate is provided at the bottom of the groove, and the blue fluorescent plate forms a color difference with the transparent backlight panel; a smoke hood and a smoke purifier are provided”;

[0015] The technical effects recorded are:

[0016] "It realizes double-station loading and improves production efficiency. By manually observing whether the pattern is sprayed within the rectangular frame or the circular frame, it can timely discover phenomena such as missing spraying and spraying deviation, reduce the production of defective products, improve product quality, and reduce production costs. It can adsorb the smoke and dust generated by spraying to avoid the operator's health being affected by large amounts of adsorption, and the smoke hood can prevent the operator from being injured due to careless contact with the laser."

[0017] However, the technical solutions recorded in the above-mentioned technical documents and the existing publicly applied related technical solutions have not been able to solve the problems and defects existing in the ultra-thin glass coding and detection in the prior art, such as "low production efficiency and high cost", "high labor intensity of workers", and "unable to guarantee product quality". Summary of the invention

[0018] The present invention provides an automatic coding and detection system, the purpose of which is to improve the automation degree and coding quality of ultra-thin glass product coding through machine vision and recognition.

[0019] In order to achieve the above object, the technical solution adopted by the present invention is:

[0020] The automatic coding and detection system of the present invention comprises a coding device; the automatic coding and detection system is also provided with a belt conveyor device and a code scanning and detection device, the coding device is arranged above the belt conveyor device; the code scanning and detection device is arranged at the end of the belt conveyor device.

[0021] A handling robot is arranged outside the front end of the belt conveyor.

[0022] The automatic coding and detection system is provided with a control unit, and the control unit is respectively connected to the handling robot, the belt conveyor, the coding device and the code scanning detection device through a signal control circuit, and controls them.

[0023] The code scanning detection device is provided with an industrial camera.

[0024] The inkjet head of the coding device moves with two degrees of freedom, namely, movement along the vertical axis and rotation in the horizontal plane.

[0025] The automatic coding and detection system is provided with a display and control screen, and the display and control screen is connected with the control unit through a signal circuit.

[0026] The automatic coding and detection system is provided with an audible and visual alarm, and the audible and visual alarm is connected with the control unit through a signal control circuit.

[0027] The control unit includes a host computer and a slave computer; the host computer is a PC, which can realize image acquisition, processing and analysis, and information storage and transmission; the slave computer is a PLC, which receives PC instructions and controls the robot to remove defective products.

[0028] The conveyor belt of the belt conveyor device adopts a mesh structure; a suction fan is arranged between the upper forward belt and the lower return belt of the conveyor belt.

[0029] In order to achieve the same invention purpose as the above technical solution, the present invention also provides a process method of the above-mentioned automatic coding and detection system, and its technical solution is that the process of the process method is:

[0030] 1. Place the products to be coded on the handling robot, and then the handling robot will deliver the products to be coded to the belt conveyor one by one;

[0031] 2. When the product to be coded arrives at the coding station, the coding device will spray the QR code or digital code;

[0032] 3. When the coded products arrive at the code scanning and inspection station, the code scanning and inspection device will scan the codes, acquire images, and analyze the images to determine whether the codes are qualified. If they are qualified, they will enter the next process. If they are unqualified, an alarm will be issued and unqualified products will be removed.

[0033] 4. After processing the unqualified products, the production line returns to normal working condition.

[0034] The present invention adopts the above technical solution, and adopts the above technical solution to improve the automation level and coding speed of ultra-thin glass product coding, improve production efficiency; improve the accuracy of recognition and detection, improve product quality; reduce labor intensity and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The contents shown in the attached drawings and the symbols in the drawings are briefly described as follows:

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 It is a schematic diagram of the movement mode of the nozzle in the present invention;

[0038] Figure 3 It is a process flow chart of the present invention.

[0039] The markings in the figure are:

[0040] 1. Handling robot, 2. Belt conveyor, 3. Coding device, 4. Code scanning detection device, 5. Display and control screen. DETAILED DESCRIPTION

[0041] The specific implementation modes of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0042] like Figure 1 The structure of the present invention is an automatic coding and detection system, which is an automatic identification and detection device for product position coding; the system includes a coding device 3. The present invention takes solving the defects of two-dimensional code coding in the product coding process as the research object, combines machine vision technology to improve the automatic coding detection system, and verifies the accuracy of the detection system through specific experiments.

[0043] In order to solve the problems existing in the prior art and overcome its defects, and to achieve the invention purpose of improving the automation degree and coding quality of ultra-thin glass products, the technical solution adopted by the present invention is:

[0044] like Figure 1 As shown, the automatic coding and detection system of the present invention is also provided with a belt conveyor device 2 and a code scanning detection device 4. The coding device 3 is arranged above the belt conveyor device 2; the code scanning detection device 4 is arranged at the end of the belt conveyor device 2.

[0045] The present invention makes up for many deficiencies in the traditional production model, and adopts machine vision to replace manual eye recognition as the main means of image and target recognition. As one of the development directions of artificial intelligence, machine vision has a very broad prospect. The present invention is based on machine vision technology and machine automation technology, and designs the working conditions of automatic position recognition and coding according to relevant national regulations, and then calculates and verifies the parameters of each component unit respectively; and automatically analyzes whether the coding is qualified through machine vision technology.

[0046] The target object is converted into an image, and after being processed by the image processing software, different information of the object is obtained by digital image processing technology; judgment is made based on the recognition result to realize real-time control of the controlled object. Applying machine vision technology to inkjet defect detection can reduce labor intensity on the one hand, and effectively improve detection accuracy and speed on the other hand, improve production efficiency and reduce production costs.

[0047] The overall structural scheme of the present invention:

[0048] After analyzing and conceiving the inkjet printer nozzle device scheme, the overall structural scheme of the automatic identification product position inkjet and detection system is obtained. It includes actuators, auxiliary devices, control units, etc. Among them:

[0049] Actuating mechanism: namely, the coding device 3, the belt conveying device 2 and the code scanning detection device 4.

[0050] Auxiliary devices: mainly include signal sensors, sound and light alarms, human-machine interaction devices, etc. The human-machine interaction devices have functions such as run / stop, manual / automatic mode selection, emergency stop, statistics, storage, etc. At the same time, they can be connected to the central control room of the factory area to achieve remote monitoring.

[0051] In addition, industrial cameras can respond to photoelectric sensors to determine whether to capture an image.

[0052] A transport robot 1 is arranged outside the front end of the belt conveyor 2 .

[0053] Control unit: The automatic coding and detection system is provided with a control unit, and the control unit is respectively connected to the handling robot 1, the belt conveyor device 2, the coding device 3 and the code scanning detection device 4 through a signal control circuit, and controls them.

[0054] The code scanning detection device 4 is provided with an industrial camera.

[0055] like Figure 2 As shown:

[0056] The inkjet head of the inkjet device 3 moves with two degrees of freedom, namely, movement along the vertical axis and rotation in the horizontal plane.

[0057] In order to ensure that the printer nozzle can reach the ideal working position, the nozzle is theoretically designed with at least 2 degrees of freedom. The task of the nozzle device is to spray the code on the specific position of the product. In this process, it needs to move up and down, and rotate forward and backward in the horizontal plane.

[0058] Figure 2 This is a simplified motion structure diagram of the printhead device, showing a rotating pair and a moving pair in series. The working process of the printhead device is as follows: the industrial camera detects the specific position of the product to be coded, the printhead is adjusted up and down to reach the top of the product to be coded, and rotates left and right to be in the same horizontal plane with the product's X-axis and Y-axis. When it approaches the product to be coded, it is coded.

[0059] like Figure 1 As shown:

[0060] The automatic coding and detection system is provided with a display and control screen 5, and the display and control screen 5 is connected to the control unit via a signal circuit.

[0061] As mentioned above, the display and control screen 5 is a human-machine interaction device, which has functions such as run / stop, manual / automatic mode selection, emergency stop, statistics, storage, etc.; at the same time, it can be connected to the central control room of the factory area through the network to realize remote monitoring

[0062] The automatic coding and detection system is provided with an audible and visual alarm, and the audible and visual alarm is connected with the control unit through a signal control circuit.

[0063] If the code reading fails, the industrial camera will output a relevant signal. At this time, the system can choose to stop and issue an alarm through the sound and light alarm, display and control screen 5, or directly reject the product that failed to scan the code.

[0064] Specific settings of the control unit: The control unit includes a host computer and a slave computer; the host computer is a PC, which can realize image acquisition, processing and analysis, and store and transmit information; the industrial camera is connected to the image acquisition card through a USB interface, and the image acquisition card communicates with the PC through a network port. The slave computer is a PLC, which receives PC instructions and controls the manipulator to remove defective products.

[0065] The conveyor belt of the belt conveyor device 2 adopts a mesh structure; a suction fan is arranged between the upper forward belt and the lower return belt of the conveyor belt.

[0066] There is a suction structure under the upper conveyor belt so that the products will be adsorbed and fixed.

[0067] like Figure 3 As shown:

[0068] In order to achieve the same invention purpose as the above technical solution, the present invention also provides a process method of the above-mentioned automatic coding and detection system, and its technical solution is that the process of the process method is:

[0069] 1. Place the products to be coded on the handling robot 1, and then the handling robot 1 will deliver the products to be coded to the belt conveyor 2 one by one;

[0070] 2. When the product to be coded arrives at the coding station, the coding device 3 performs QR code or digital spraying;

[0071] 3. The coded product arrives at the code scanning and detection station, and the code scanning and detection device 4 scans the code, acquires the image, and analyzes the image to determine whether the code is qualified; if qualified, it enters the next process; if unqualified, an alarm is issued and the unqualified products are removed;

[0072] 4. After processing the unqualified products, the production line returns to normal working condition.

[0073] The present invention is aimed at the design of ultra-thin glass coding device, and performs three-dimensional design on it. First, place the side of the product to be coded upward on the conveying crawler of the belt conveyor device 2 of the coding machine, and a suction structure is provided under the conveyor belt, so that the product will be fixed;

[0074] After being conveyed by the belt conveyor 2, the products on the crawler are captured by the industrial camera;

[0075] After capture, the data is transmitted to the computer side of the control unit for processing;

[0076] According to the product position captured by the camera, the printer nozzle adjusts its position through a hydraulic device; after the conveyor belt transports the product under the nozzle, it is coded.

[0077] The core component of the barcode scanning detection device is an industrial camera, which is a key component of machine vision. The barcode is scanned to obtain the original image, and the system's image processing algorithm is used to analyze the barcode to determine whether there are defects. The present invention greatly improves the efficiency of inkjet printing while ensuring the quality of inkjet printing.

[0078] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An automatic coding and detection system, comprising a coding device (3), characterized in that: The automatic coding and detection system is further provided with a belt conveyor device (2) and a code scanning and detection device (4); the coding device (3) is arranged above the belt conveyor device (2); and the code scanning and detection device (4) is arranged at the end of the belt conveyor device (2).

2. The automatic coding and detection system according to claim 1, characterized in that: A transport robot (1) is arranged outside the front end of the belt conveyor device (2).

3. The automatic coding and detection system according to claim 2, characterized in that: The automatic coding and detection system is provided with a control unit, and the control unit is respectively connected to the handling robot (1), the belt conveyor device (2), the coding device (3) and the code scanning detection device (4) through a signal control circuit, and controls them.

4. The automatic coding and detection system according to claim 1, characterized in that: The code scanning detection device (4) is provided with an industrial camera.

5. The automatic coding and detection system according to claim 1, characterized in that: The inkjet head of the coding device (3) moves with two degrees of freedom, namely, movement along the vertical axis and rotation in the horizontal plane.

6. The automatic coding and detection system according to claim 3, characterized in that: The automatic coding and detection system is provided with a display and control screen (5), and the display and control screen (5) is connected to the control unit via a signal circuit.

7. The automatic coding and detection system according to claim 3, characterized in that: The automatic coding and detection system is provided with an audible and visual alarm, and the audible and visual alarm is connected with the control unit through a signal control circuit.

8. The automatic coding and detection system according to claim 3, characterized in that: The control unit includes a host computer and a slave computer; the host computer is a PC, which can realize image acquisition, processing and analysis, and information storage and transmission; the slave computer is a PLC, which receives PC instructions and controls the robot to remove defective products.

9. The automatic coding and detection system according to claim 1, characterized in that: The conveyor belt of the belt conveyor device (2) adopts a mesh structure; a suction fan is arranged between the upper forward belt and the lower return belt of the conveyor belt.

10. The process method of the automatic coding and detection system according to any one of claims 1 to 9, characterized in that: The process of the process is as follows: 1) Place the products to be coded on the handling robot (1), and then the handling robot (1) delivers the products to be coded to the belt conveyor (2) one by one; 2) When the product to be coded arrives at the coding station, the coding device (3) sprays the QR code or digital code; 3) When the coded product arrives at the code scanning and inspection station, the code scanning and inspection device (4) scans the code, acquires the image, and analyzes the image to determine whether the code is qualified; if qualified, the next process is entered; if unqualified, an alarm is issued and the unqualified product is removed; 4) After processing the unqualified products, the production line returns to normal working condition.

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