A glass drilling monitoring control system
By introducing a drilling detection module and photoelectric switch to detect the hole position after glass drilling, and linking it with production alarms, the problem of unsuccessful or incomplete hole drilling was solved, achieving accurate detection and efficient production in the glass production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINYI PHOTOVOLTAIC (SUZHOU) CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-23
AI Technical Summary
In existing technologies, no inspection is performed after glass is drilled, resulting in unsuccessful or incomplete products being released, affecting product yield and production efficiency.
After drilling holes in the glass, a drilling detection module is introduced. The hole position is detected by a photoelectric switch, which triggers a production alarm. Only after the hole is passed through and qualified can the next process be carried out. A PLC controller and an electric moving mechanism are used in conjunction with positioning fixtures to achieve accurate detection and alarm.
It improved product reliability, reduced the outflow of defective products, and increased production efficiency and product yield.
Smart Images
Figure CN224399765U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of glass production technology, and in particular to a drilling monitoring and control system for the glass production process. Background Technology
[0002] During the glass production and processing, different operational controls are implemented according to different customer needs. Common practices include adding drilling and screen printing processes to the glass production process. Drilling machines and screen printing machines are used to meet the drilling and screen printing requirements of the glass.
[0003] Drilling can be achieved in the glass production process using specialized drilling machines, such as the positioning and drilling device for glass processing described in patent application number 202211593926.7. The positioning module includes an X-axis detection unit, a Y-axis detection unit, and a Z-axis detection unit. The X-axis and Y-axis detection units are installed above the roller conveyor, and the Z-axis detection unit is installed below the roller conveyor. The drilling module is installed above the roller conveyor. The input end of the control module is connected to the X-axis, Y-axis, and Z-axis detection units respectively, and the output end is connected to the drilling module. This invention discloses a positioning and drilling method for glass processing. This invention uses X-axis and Y-axis detection units to detect the distance between the glass plate to be drilled and the drilling module in the XY directions. The control module controls the distance of the drilling module along the XY axes. The Z-axis detection unit detects the difference between the glass plate's initial height and the current height, and feeds this difference back to the control module, which then controls the drilling module to correct the Z-axis value. This allows for more precise drilling of the glass plate.
[0004] The aforementioned patent allows for drilling operations during glass production, followed by feeding the drilled glass into the screen printing process. Before being fed into the screen printing machine, the glass is positioned, fixing it in a fixed position. This ensures that the printing position on the glass remains consistent, printing the same pattern in the same location, guaranteeing the accuracy of the screen printing process. However, the process from drilling to positioning and then screen printing, with the glass directly fed into the screen printing machine after drilling without any inspection, makes it impossible to confirm whether the drilling is complete or whether it penetrates the glass. This results in unsuccessful or incomplete drilling, affecting the product yield, increasing the possibility of rework, and impacting production efficiency. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a glass drilling monitoring and control system. By detecting the hole position of the glass after drilling, the system can trigger a production alarm, reduce the outflow of glass products with unsuccessful or incomplete drilling, and improve the reliability of the produced products.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a glass drilling monitoring and control system, comprising a PLC controller and a screen printing machine; the output terminal of the PLC controller is connected to the screen printing machine, and the screen printing machine is used to perform a screen printing process on the drilled glass transmitted to the screen printing station according to the control signal of the PLC controller; the control system further comprises a drilling detection module, which is used to detect the hole position of the drilled glass, and its output terminal is connected to the PLC controller; the output terminal of the PLC controller is connected to an alarm module, which is used to control the output of the alarm signal of the alarm module according to the hole position detection result.
[0007] The output of the PLC controller is connected to the controller of the screen printing machine, and is used to control whether the screen printing machine starts the screen printing process based on the detection result of the punching detection module.
[0008] The punch detection module includes a photoelectric switch, which is used to detect whether there is a hole at the punch location on the glass and whether the hole is through. Its output terminal is connected to a PLC controller.
[0009] The hole detection module is positioned above the hole location on the glass.
[0010] The punch detection module is mounted on the electric moving mechanism, and the output of the PLC controller is connected to the electric moving mechanism to control the punch detection module to move to the detection position above the glass hole.
[0011] The punch detection module is installed above the glass positioning station in front of the screen printing station. At the glass positioning station, the glass is positioned according to the size, angle, and direction of the screen printing machine by the positioning fixture so that the glass can be transported onto the screen printing machine. After the positioning is completed, the PLC controller detects the corresponding hole position data based on the punch detection module.
[0012] The positioning fixture includes multiple positioning blocks, each driven by a motor. When the glass is in the positioning position, the output of the PLC controller is connected to the servo motor, and the positioning block is driven by each servo motor to limit the glass within the set position range.
[0013] The PLC controller is connected to a timer. After the servo motor is positioned, the PLC controller starts the detection module for drilling and determines the drilling status within a time interval.
[0014] The advantages of this invention are: by detecting the hole position of the glass after drilling and triggering a production alarm, the outflow of glass products with unsuccessful or incomplete drilling is reduced, thereby improving the reliability of the produced products. Attached Figure Description
[0015] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:
[0016] Figure 1 This is the original structural diagram of the control system of this utility model. Detailed Implementation
[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.
[0018] To address the quality issues of unsuccessful drilling or incomplete hole penetration caused by the lack of drilling inspection during the production process of perforated glass in existing technologies, this solution improves product reliability, reduces defective glass products, and increases production efficiency by adding drilling inspection and linking production based on the inspection results. The specific solution is as follows:
[0019] like Figure 1 As shown, a glass drilling monitoring and control system includes a PLC controller, a screen printing machine, and a drilling detection module. The output of the PLC controller is connected to the screen printing machine, which performs a screen printing process on the drilled glass transmitted to the screen printing station according to the control signal of the PLC controller. The drilling detection module is used to detect the hole position of the drilled glass, and its output is connected to the PLC controller. The output of the PLC controller is connected to an alarm module, which controls the output of the alarm signal of the alarm module according to the hole position detection result.
[0020] In a normal glass production process, the produced glass is punched by a punching machine and then transported by a conveyor to a screen printing machine for the next screen printing process. Traditional control systems directly feed the glass into the screen printing machine after punching, but without punch detection, it's impossible to determine whether the holes are qualified or continuous, leading to production waste. To solve this problem, this solution incorporates a punch detection module into the production process to collect punching data. Based on the data, it determines whether the punching meets requirements. If the detection results are satisfactory, the screen printing machine continues to operate, completing the screen printing process and proceeding to the next step. If the detection results are unsatisfactory, the screen printing machine stops, and an alarm signal is issued as a reminder. This system links the screen printing machine operation with the alarm module based on punch detection, thereby improving the product qualification rate of the production line, promptly detecting defective products, issuing alarms, and halting production.
[0021] When the screen printing machine stops working, this solution uses a PLC controller to control the screen printing machine. The screen printing machine is controlled by its own controller. The output terminal of the PLC controller is connected to the screen printing machine controller. The PLC controller outputs the corresponding control signal to the screen printing machine controller according to the detection result of the punching detection module, thereby controlling whether the screen printing machine starts the screen printing process.
[0022] The alarm module mainly provides alarm signals, which can take the form of various alarms such as audible and visual alarms and displays, to send corresponding alarm reminders to production and maintenance personnel for production monitoring. Preferably, the corresponding alarm signals can be implemented using the HMI display of the PLC controller.
[0023] The punch detection module primarily checks whether the glass punching meets the requirements. Glass punching requires the hole to penetrate the glass; therefore, it's necessary to detect whether the punch has penetrated the glass. To achieve this, this solution uses a photoelectric switch, which employs a photoelectric sensor to detect whether the glass hole is through. A laser fiber is emitted and passes through the glass hole. The light feedback signal detected by the photoelectric switch differs depending on whether the hole is through or not. Based on the detection signal from the photoelectric switch, it can be determined whether the currently detected glass hole meets the requirements. The photoelectric switch is used to detect whether there is a hole at the punching location on the glass and whether the hole is through. Its output is connected to a PLC controller. The PLC controller can determine whether the currently detected glass hole is through based on the detection data from the photoelectric switch, thereby implementing corresponding alarm control and screen printing machine control strategies.
[0024] In this embodiment, the hole detection module is positioned above the hole location on the glass and emits a corresponding laser downwards to detect the hole in the glass. Since glass is typically drilled horizontally during production and then transported along the production line to different workstations for further processing, a photoelectric switch can be positioned above the glass production line, directly above the glass, to detect whether the hole is complete. When the glass reaches a specific position along the production line, activating the photoelectric switch allows for the detection of the hole.
[0025] In a preferred embodiment, the punching detection module is mounted on an electric moving mechanism. The output of a PLC controller is connected to the electric moving mechanism to control the punching detection module to move to a detection position above the glass hole. The electric moving mechanism allows the punching detection module to be moved, thus adjusting the detection position to accommodate different production batches with varying punching locations. The electric moving mechanism may include a motor and corresponding tracks and beams, enabling XY-axis movement on a horizontal plane.
[0026] To integrate the punching detection module with the glass production line, it can be placed above the glass positioning station before the screen printing station. Since screen printing machines require the glass to be in a fixed position before entering the machine—meaning it must enter with specific orientation, angle, and location—otherwise, the screen printing process will produce inconsistent results on each piece of glass. To achieve this, a positioning station is typically set up on the production line before the screen printing machine. At this station, positioning fixtures adjust the glass to a preset position before it enters the machine. Because the glass's position at this station is fixed each time, and the punching pattern is also fixed, placing the detection module above this station only requires one calibration. Each time glass arrives on the production line, the detection can be initiated, resulting in more accurate and reliable detection that aligns with the original production line's flow rhythm. At the glass positioning station, positioning fixtures position the glass according to the screen printing machine's dimensions, angle, and orientation for easy transport. After the positioning is completed, the PLC controller uses the punching detection module to detect the corresponding hole position data. Positioning fixtures are used to limit the position of glass, adjusting it within a set range. This typically involves multiple limit blocks, which are moved sequentially to their designated positions to adjust the glass's position. For example, a positioning fixture may include multiple positioning blocks, each driven by a motor. Once the glass is in the positioning position, the PLC controller's output is connected to a servo motor, which in turn drives the positioning block to confine the glass within the set range.
[0027] Because the glass position is adjusted by a servo motor and positioning block at the positioning station, the glass may vibrate when the adjustment is completed and released, causing fluctuations in the detection results and affecting the accuracy of production detection. Therefore, this solution includes a timer. The PLC controller is connected to the timer. After the servo motor positioning is completed, the PLC controller starts the drilling detection module and judges the drilling status within the timed period. The timing starts when the positioning motor is released after positioning is completed. The data detected within the timed period is used as the basis for the result judgment. If the detection data exceeds the timed range, it is ignored. At this time, fluctuations in the detection results may occur due to limit fluctuations or the movement of the glass production line when feeding the glass into the screen printing machine. If no time range is set, false alarms may occur. Specifically:
[0028] When the production line transports the glass to the pre-positioned location on the screen printing machine, positioning begins. This is timed by the movement of four servo motors at the positioning station to clamp the glass within the set position range. When the servo motors release, the glass may vibrate slightly, causing deviations in the glass hole position. This can lead to false flashes in the PNP signal detection of the photoelectric switch, resulting in fluctuations in the detection results or even false alarms. To prevent false alarms caused by flashing PNP signals, a photoelectric detection delay has been added to the program. If the PNP signal from the photoelectric switch is detected within 0.05 seconds after the servo positioning is completed and released, the hole position is considered normal. If no signal is received within 0.05 seconds, the hole position is considered abnormal, and the screen printing machine stops and outputs an alarm.
[0029] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.
Claims
1. A glass drilling monitoring and control system, comprising a PLC controller and a screen printing machine; the output terminal of the PLC controller is connected to the screen printing machine, and the screen printing machine is used to perform a screen printing process on the drilled glass transmitted to the screen printing station according to the control signal of the PLC controller; characterized in that: The control system also includes a hole detection module, which is used to detect the hole position of the perforated glass, and its output terminal is connected to a PLC controller; the output terminal of the PLC controller is connected to an alarm module, which is used to control the output of the alarm signal of the alarm module according to the hole position detection result.
2. The glass drilling monitoring and control system as described in claim 1, characterized in that: The output of the PLC controller is connected to the controller of the screen printing machine, and is used to control whether the screen printing machine starts the screen printing process based on the detection result of the punching detection module.
3. The glass drilling monitoring and control system as described in claim 1, characterized in that: The punch detection module includes a photoelectric switch, which is used to detect whether there is a hole at the punch location on the glass and whether the hole is through. Its output terminal is connected to a PLC controller.
4. A glass drilling monitoring and control system as described in any one of claims 1-3, characterized in that: The hole detection module is positioned above the hole location on the glass.
5. A glass drilling monitoring and control system as described in any one of claims 1-3, characterized in that: The punch detection module is mounted on the electric moving mechanism, and the output of the PLC controller is connected to the electric moving mechanism to control the punch detection module to move to the detection position above the glass hole.
6. A glass drilling monitoring and control system as described in any one of claims 1-3, characterized in that: The punch detection module is installed above the glass positioning station in front of the screen printing station. At the glass positioning station, the glass is positioned according to the size, angle, and direction of the screen printing machine by the positioning fixture so that the glass can be transported onto the screen printing machine. After the positioning is completed, the PLC controller detects the corresponding hole position data based on the punch detection module.
7. The glass drilling monitoring and control system as described in claim 6, characterized in that: The positioning fixture includes multiple positioning blocks, each driven by a motor. When the glass is in the positioning position, the output of the PLC controller is connected to the servo motor, and the positioning block is driven by each servo motor to limit the glass within the set position range.
8. The glass drilling monitoring and control system as described in claim 7, characterized in that: The PLC controller is connected to a timer. After the servo motor is positioned, the PLC controller starts the detection module for drilling and determines the drilling status within a time interval.