A glass tempering horizontal air grid blowing face flatness detection system

Abstract

A system for detecting the flatness of the blowing surface of a tempered glass horizontal air grating includes an upper air grating and a lower air grating. Upper ultrasonic sensors are fixedly installed at the four corners of the upper air grating, and lower ultrasonic sensors are installed at the four corners of the lower air grating. The system also includes a controller. The controller can calculate and determine whether the flatness of the blowing surface of the upper air grating exceeds a predetermined standard based on the received signals from the upper ultrasonic sensors. When the flatness of the upper air grating exceeds the standard, the controller can activate an alarm device connected to it. Similarly, the controller can determine whether the flatness of the blowing surface of the lower air grating exceeds the standard based on the received signals from the lower ultrasonic sensors, and can also activate an alarm device when the flatness of the lower air grating exceeds the standard. This system can promptly detect the flatness of the blowing surface of the horizontal air grating and provide alarm prompts for adjustment, thereby ensuring that product quality does not decline and reducing production costs.

Description

Technical Field

[0001] This invention belongs to the field of tempered glass manufacturing technology, specifically a glass tempered horizontal air grid blowing surface flatness detection system. Background Technology

[0002] In the manufacturing process of horizontal tempered glass, the horizontal air grid on the glass tempering equipment is driven by a lifting motor through a transmission device to adjust the horizontal height (for specific working principle, please refer to Chinese patent document ZL201520059020.6 A cooling device for bending glass tempering production).

[0003] When using a horizontal air grate for actual air blowing, the flatness of the blowing surface must be within 1mm; otherwise, it will significantly affect the quality of the glass product. Furthermore, when producing tempered glass of different specifications, the horizontal height of the air grate needs to be adjusted to achieve the appropriate blowing distance (the distance from the plane where the air grate's air outlet is located to the glass surface) to ensure the production of high-quality tempered glass.

[0004] In existing tempering equipment, to achieve automated adjustment of the horizontal air grating height, encoders and motors are typically used to automatically adjust the air blowing distance. A PLC's counting unit records the encoder's changes to calculate the actual blowing distance. The program needs to initialize the horizontal air grating position and periodically calibrate it to ensure the accuracy of the calculated blowing distance, ultimately achieving accurate horizontal air grating height adjustment and ensuring the quality of the glass tempering process. The flatness of the horizontal air grating's blowing surface is measured using a ruler or steel tape.

[0005] During later use, the flatness of the air blowing surface of the horizontal air grating can change due to various factors, causing the flatness to exceed the required range. In the current technology, the problem is only investigated in reverse when obvious quality problems occur in the product. It is found that the flatness of the air blowing surface of the horizontal air grating exceeds the standard, and then the flatness of the horizontal air grating is adjusted. This solution not only affects the quality of tempered glass products, but also greatly increases the production cost of tempered glass. Summary of the Invention

[0006] The purpose of this invention is to provide a system for detecting the flatness of the blowing surface of a tempered glass horizontal air grating.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a glass tempered horizontal air grating blowing surface flatness detection system, wherein the horizontal air grating includes an upper air grating and a lower air grating, both of which are connected to a lifting mechanism. The lifting mechanism is mounted on a frame. An upper ultrasonic sensor is fixedly installed above the upper air grating at each of its four corners, and a lower ultrasonic sensor is fixed below the lower air grating at each of its four corners. The system also includes a controller for receiving signals from the ultrasonic sensors. The controller can calculate and determine whether the flatness of the blowing surface of the upper air grating exceeds a predetermined standard based on the received upper ultrasonic sensor signals, and can activate an alarm device connected to it to provide an alarm prompt when the flatness of the blowing surface of the upper air grating exceeds the standard. The controller can also determine whether the flatness of the blowing surface of the lower air grating exceeds the standard based on the received lower ultrasonic sensor signals, and can activate an alarm device to provide an alarm prompt when the flatness of the blowing surface of the lower air grating exceeds the standard.

[0008] Furthermore, both the upper and lower ultrasonic sensors are fixed to the frame via connectors.

[0009] Furthermore, the controller is a PLC, which stores the distance b between the upper ultrasonic sensor and the upper surface of the glass, and the distance a between the measurement position at the top of the upper air grating and the air outlet. The controller calculates the actual distance d between the air outlet of the upper air grating and the upper surface of the glass based on the received distance X between the upper ultrasonic sensor and the corresponding measurement position at the top of the upper air grating, i.e., d=bax. The PLC calculates the distance values ​​between the air outlets of the upper air grating at the four corners and the upper surface of the glass based on the measurement results of the four upper ultrasonic sensors, calculates the pairwise differences between them, and if any one of them is greater than a predetermined standard value, an alarm is triggered to indicate that the flatness of the upper air grating needs to be adjusted.

[0010] Furthermore, the predetermined standard value is 1 mm.

[0011] Preferably, the controller can obtain the average distance between the air blowing surface of the upper air grille and the glass by averaging the distance between the air blowing outlets of the four corners of the upper air grille and the upper surface of the glass. If the difference between the average distance and the initial value stored in the controller exceeds a predetermined value, the alarm device is activated to prompt that the height of the upper air grille needs to be adjusted.

[0012] Beneficial effects: According to the present invention, the flatness of the upper and lower wind grates can be detected throughout the entire operation of the horizontal wind grating. The corresponding ultrasonic sensor is used to transmit the corresponding detection signal to the controller. The controller calculates and judges based on the received signal. Once the flatness exceeds the predetermined standard, the alarm device will be activated to sound an alarm. Therefore, product quality problems can be detected in time before they occur, reminding the staff to make corresponding adjustments, thereby effectively ensuring the improvement of product quality and reducing production costs.

[0013] According to a preferred embodiment of the present invention, the present invention can also obtain the height position distance between the horizontal wind grating and the glass in real time, and activate the alarm device to issue an alarm when the height position distance exceeds a predetermined value, reminding the user to adjust the height position of the corresponding wind grating, thereby further ensuring the product quality of tempered glass. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] The markings in the diagram are: 1. Upper ultrasonic sensor, 2. Upper air grille, 3. Lower air grille, 4. Lower ultrasonic sensor, 5. Glass, d. Actual distance between the air outlet of the upper air grille and the upper surface of the glass, b. Distance between the upper ultrasonic sensor and the upper surface of the glass, a. Distance between the top measurement position and the air outlet of the upper air grille, x. Distance between the upper ultrasonic sensor and the corresponding measurement position at the top of the upper air grille. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention in any way.

[0017] Referring to the accompanying drawings, a system for detecting the flatness of the blowing surface of a tempered glass horizontal air grating is provided. The horizontal air grating includes an upper air grating 2 and a lower air grating 3. Both the upper air grating 2 and the lower air grating 3 are connected to a lifting mechanism. The lifting mechanism is mounted on a frame (the connection between the lifting mechanism and the frame is prior art and is therefore omitted in the accompanying drawings).

[0018] An upper ultrasonic sensor 1 is fixedly installed above the upper wind grille 2 at each of the four corners of the upper wind grille, and a lower ultrasonic sensor 4 is fixed below the lower wind grille 3 at each of the four corners of the lower wind grille.

[0019] The upper and lower ultrasonic sensors described in this article are both existing ultrasonic sensors, differing only in name; their structure and principle are the same. Since ultrasonic sensors are existing technology, they will not be described in detail in this article.

[0020] The technical solution of the present invention also includes a controller for receiving the signals from the aforementioned ultrasonic sensors. The controller can determine whether the flatness of the upper air grating blowing surface exceeds a predetermined standard based on the received upper ultrasonic sensor signal, and can activate the alarm device connected to it to provide an alarm prompt when it is determined that the flatness of the upper air grating blowing surface exceeds the predetermined standard. The controller can also determine whether the flatness of the lower air grating blowing surface exceeds a predetermined standard based on the received lower ultrasonic sensor signal, and can activate the alarm device to provide an alarm prompt when it is determined that the flatness of the lower air grating blowing surface exceeds the predetermined standard.

[0021] In this embodiment, both the upper ultrasonic sensor 1 and the lower ultrasonic sensor 4 can be fixed to the frame via connectors.

[0022] In this embodiment, the controller is selected as a PLC.

[0023] Referring to the attached drawings, the working principle of the present invention will be explained below using ultrasonic sensor 1 at point A as an example.

[0024] The PLC stores the distance value b between the upper ultrasonic sensor 1 and the upper surface of the glass, and the distance a between the top measuring position of the upper air grille 2 and the air outlet.

[0025] The controller calculates the actual distance d between the air outlet of the upper air grating and the upper surface of the glass based on the signal transmitted by the upper ultrasonic sensor (i.e., the distance X between the upper ultrasonic sensor probe and the corresponding measurement position at the top of the upper air grating), that is, d=bax.

[0026] For horizontal tempered glass with predetermined production specifications, the distance b between the upper ultrasonic sensor 1 and the upper surface of the glass 5 is a fixed value. For the upper air grille 2 that has already been installed and used, the distance a between its top measurement position and the air outlet of the upper air grille is also a fixed value. In other words, the actual distance d between the air outlet of the upper air grille and the upper surface of the glass will change by the same value as the distance X between the upper ultrasonic sensor and the corresponding measurement position at the top of the upper air grille.

[0027] Substituting the distances measured by the four upper ultrasonic sensors 1 between themselves and the corresponding measurement positions at the top of the upper air grating into d=bax, we can obtain the actual distances between the four corresponding upper air grating air outlets and the upper surface of the glass 5. These distances are referred to as d1, d2, d3, and d4, respectively. In this embodiment, these are the air blowing distances at the four corners of the upper air grating.

[0028] Then, the controller calculates the pairwise differences based on the four blowing distance values: the difference between d1 and d2, the difference between d2 and d3, the difference between d3 and d4, and the difference between d4 and d1. If the absolute value of all differences is no greater than 1mm, the flatness of the upper air grating blowing surface meets the predetermined standard. If the absolute value of any difference is greater than 1mm, the alarm device is activated to prompt that the flatness of the upper air grating needs to be adjusted.

[0029] In addition, in this embodiment, the controller can also obtain the average distance between the air blowing surface of the upper air grille and the glass by averaging the distance values ​​between the air blowing ports of the four corner air grilles and the upper surface of the glass. When the difference between this average distance and the initial value stored in the controller exceeds a predetermined value, the alarm device is activated to prompt that the height of the upper air grille needs to be adjusted.

[0030] The controller's judgment on whether the flatness and height of the lower air vent meet the predetermined standards is the same as that of the upper air vent, and will not be described in detail here.

[0031] The present invention employs the above-mentioned technical solution to detect the flatness of the upper and lower wind grates throughout the entire operation of the horizontal wind grates. Once the flatness is found to exceed the predetermined standard, an alarm device will be activated. Therefore, quality problems can be detected in time before they occur, reminding staff to make corresponding adjustments, thereby effectively ensuring the improvement of product quality and reducing production costs.

[0032] The parts not detailed in this article are existing technologies.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims

1. A system for detecting the flatness of the blowing surface of a tempered glass horizontal air grating, wherein the horizontal air grating includes an upper air grating (2) and a lower air grating (3), both the upper and lower air gratings being connected to a lifting mechanism, the lifting mechanism being mounted on a frame, characterized in that: An upper ultrasonic sensor (1) is fixedly installed above the upper air grating at each of the four corners of the upper air grating, and a lower ultrasonic sensor (4) is fixed below the lower air grating at each of the four corners of the lower air grating. The system also includes a controller for receiving signals from the ultrasonic sensors. The controller can calculate and determine whether the flatness of the air blowing surface of the upper air grating exceeds a predetermined standard based on the received upper ultrasonic sensor signals, and the controller can determine whether the flatness of the air blowing surface of the lower air grating exceeds the standard based on the received lower ultrasonic sensor signals. Specifically, the controller stores the distance value b between the upper ultrasonic sensor and the upper surface of the glass, and the distance a between the measurement position at the top of the upper air grating and the air outlet. The controller calculates the actual distance d between the air outlet of the upper air grating and the upper surface of the glass based on the distance X between the received upper ultrasonic sensor and the corresponding measurement position at the top of the upper air grating, i.e., d=bax. The PLC calculates the distance values ​​between the air outlets of the upper air grating at the four corners and the upper surface of the glass based on the measurement results of the four upper ultrasonic sensors, calculates the pairwise differences, and if any one of them is greater than the predetermined standard value, an alarm is triggered to indicate that the flatness of the upper air grating needs to be adjusted. The predetermined standard value is 1mm.

2. The glass tempered horizontal air grating blowing surface flatness detection system according to claim 1, characterized in that: Both the upper and lower ultrasonic sensors are fixed to the frame via connectors.

3. The glass tempered horizontal air grating blowing surface flatness detection system according to claim 1, characterized in that: The controller can obtain the average distance between the air blowing surface of the upper air grille and the glass by averaging the distance between the air blowing outlets of the four corners of the upper air grille and the upper surface of the glass. If the difference between the average distance and the initial value stored in the controller exceeds a predetermined value, the alarm device will be activated to prompt that the height of the upper air grille needs to be adjusted.

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