A knife pressure automatic adjusting device applied to cutting of liquid crystal glass substrate

Abstract

The application discloses a kind of knife pressure automatic adjusting device applied to liquid crystal glass substrate cutting, including three parts of cutting knife head mechanism, electrical proportional valve and DA module, cutting knife head mechanism includes knife head and cylinder, electrical proportional valve is connected with the air inlet of control knife head cylinder extension, DA module is connected with electrical proportional valve, electrical proportional valve includes signal input end, power end, control loop module, gas supply solenoid valve, exhaust solenoid valve, pilot valve, diaphragm and pressure sensor, signal input end is connected with power end by line with control loop module, control loop module respectively signal transmission to gas supply solenoid valve, exhaust solenoid valve, gas supply solenoid valve, exhaust solenoid valve are connected with pilot valve.The knife pressure automatic adjusting device designed in the application can realize the purpose of automatic adjustment of cutting knife head pressure, ensure that cutting knife head is in the case of cutting loss, can also carry out efficient and accurate cutting to liquid crystal glass.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal glass substrate production equipment technology, specifically to an automatic blade pressure adjustment device for cutting liquid crystal glass substrates. Background Technology

[0002] Liquid crystal glass (LCD) is a special type of glass with a liquid crystal molecular structure, and its optical properties can be altered by an electric field. LCDs are widely used in optical display technology, such as in liquid crystal displays (LCDs) and liquid crystal projectors. The main components of LCDs are silicates or borosilicates, and their chemical composition is similar to that of ordinary glass. However, LCDs acquire liquid crystal properties by adding a layer or film of liquid crystal molecules. Liquid crystal molecules are long, elongated organic compounds with dipolarity, and their arrangement and optical properties can be altered under the influence of an electric field. The working principle of LCDs is based on changes in the arrangement and orientation of liquid crystal molecules. When LCDs are in the absence of an electric field, the liquid crystal molecules are usually arranged in an ordered manner, causing light to be polarized as it passes through. However, when an electric field is applied, the liquid crystal molecules undergo an orientation change, leading to a change in the polarization direction of the light, thus achieving optical modulation of the liquid crystal. In liquid crystal display technology, LCDs are commonly used as the substrate for LCD displays. The liquid crystal molecular layer is located between two pieces of glass, and the effect of the electric field is controlled by a transparent conductive layer. When an electric field is applied to the liquid crystal layer, the arrangement of liquid crystal molecules changes, thereby controlling the transmission and blocking of light and realizing the adjustment of the brightness and color of the pixels. Liquid crystal glass has many advantages, including low power consumption, high contrast, wide viewing angle, and thinness. In the production and manufacturing process of liquid crystal substrate glass, the edge plate (the feed part) of the glass needs to be cut.

[0003] However, existing edge plate cutting processes for LCD substrate glass suffer from the following problems: Due to wear and tear on the cutting head during the cutting process, prolonged operation can lead to insufficient or shallow contact between the cutting head and the glass surface, resulting in shallow markings and the inability to break the edge plate. Traditional methods of adjusting the air pressure of the cutting head cylinder via a speed control valve cannot achieve precise adjustment of the cutting pressure. Manual adjustment of the cutting pressure or replacement of the cutting head will interrupt production, causing the loss of plates in the upstream process and resulting in significant economic losses. Therefore, a corresponding technical solution needs to be designed to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic blade pressure adjustment device for cutting liquid crystal glass substrates. This device solves the problem that due to wear and tear on the cutting head during the cutting process, prolonged operation can lead to insufficient or shallow contact between the cutting head and the glass surface, resulting in shallow markings and the inability to break off edge plates. Traditional methods of adjusting the air pressure extended by the cutting head cylinder using a speed control valve cannot achieve precise blade pressure adjustment. Manual adjustment of blade pressure or replacement of the cutting head will interrupt production, causing board loss in upstream processes and significant economic losses. This technical problem is addressed by connecting a DA module to a 24V power supply. The electro-proportional valve is connected, and finally, the electro-proportional valve is connected to the cutter head mechanism. After the input signal is connected to the control circuit, it is transmitted to the air supply solenoid valve and the exhaust solenoid valve respectively. The air supply solenoid valve supplies pressure to the pilot valve and outputs pressure to the cutter head to control the extension of the cutter head. At the same time as the output pressure, the pressure sensor also receives the output pressure of the pilot valve and feeds it back to the control circuit. The control circuit receives the pressure signal and automatically corrects it according to the cutting condition after the cutter head wears, thereby achieving automatic control of the cutter head pressure, reducing product loss caused by manual adjustment of cutter pressure and cutter replacement, and thus achieving the purpose of automatic adjustment of cutter head pressure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic blade pressure adjustment device for cutting liquid crystal glass substrates, comprising three parts: a cutting blade mechanism, an electro-proportional valve, and a DA module. The cutting blade mechanism includes a blade and a cylinder. The electro-proportional valve is connected to the air inlet that controls the extension of the blade cylinder. The DA module is connected to the electro-proportional valve. The electro-proportional valve includes a signal input terminal, a power supply terminal, a control loop module, an air supply solenoid valve, an exhaust solenoid valve, a pilot valve, a diaphragm, and a pressure sensor. The signal input terminal and the power supply terminal are connected to the control loop module via a line. The control loop module transmits signals to the air supply solenoid valve and the exhaust solenoid valve, respectively. Both the air supply solenoid valve and the exhaust solenoid valve are connected to the pilot valve. The pilot valve delivers pressure to the blade and controls the blade extension. The pilot valve has a pilot chamber inside, and the diaphragm is located in the pilot chamber. The pressure sensor is connected to the pilot valve via a line. The pressure sensor receives the output pressure from the pilot valve and then feeds it back to the control loop module. The control loop module is also equipped with a pressure display and an output signal.

[0006] As a preferred embodiment of the present invention, the electric proportional valve is selected from either a 0-10V voltage input type or a 4-20mA current input type.

[0007] In a preferred embodiment of the present invention, the DA module is selected as the Q64DAN model and can be connected to voltage output and current output, and the DA module is connected to a 24V power supply.

[0008] In a preferred embodiment of the present invention, the exhaust solenoid valve is equipped with an exhaust port 1, which is used to exhaust gas externally.

[0009] In a preferred embodiment of the present invention, the pilot valve includes a valve body, an air supply port, an output port, a second exhaust port, an air supply valve, and an exhaust valve. The air supply port and the output port are respectively located on both sides of the valve body, the second exhaust port is located above the output port, the air supply valve is installed at the air supply port, and the exhaust valve is installed at the second exhaust port.

[0010] In a preferred embodiment of the present invention, the control loop module receives a pressure signal and then automatically corrects it based on the cutting condition after the cutter head wears down.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. This invention optimizes the blade adjustment method for cutting liquid crystal glass substrates by designing an automatic blade pressure adjustment device. This device is equipped with an electro-proportional valve and a DA module on the cutting blade mechanism. The DA module is connected to a 24V power supply and then connected to the electro-proportional valve. Finally, the electro-proportional valve is connected to the air inlet that controls the extension of the blade cylinder. After the input signal is connected to the control circuit, it is transmitted to the air supply solenoid valve and the exhaust solenoid valve respectively. The air supply solenoid valve supplies pressure to the pilot valve and outputs pressure to the blade, controlling its extension. Simultaneously, the pressure sensor receives the output pressure from the pilot valve and feeds it back to the control circuit. Upon receiving the pressure signal, the control circuit automatically corrects (increases the output pressure) based on the cutting condition after blade wear, thereby achieving automatic control of the blade pressure and reducing product loss during manual blade pressure adjustment and blade replacement, thus achieving the purpose of automated blade pressure adjustment.

[0013] 2. The automatic blade pressure adjustment device designed in this invention can achieve the purpose of automatically adjusting the blade pressure of the cutting head, ensuring that the cutting head can still perform efficient and precise cutting of LCD glass even when the cutting head is worn out. Compared with the method of manually adjusting the blade pressure or replacing the cutting head, it is more automated and convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an automatic blade pressure adjustment device for cutting liquid crystal glass substrates proposed in this invention;

[0015] Figure 2 This is a schematic diagram of the process for an automatic blade pressure adjustment device for cutting liquid crystal glass substrates proposed in this invention;

[0016] Figure 3This is a wiring diagram for the voltage and current types of the DA module of an automatic blade pressure adjustment device for cutting liquid crystal glass substrates, as proposed in this invention.

[0017] In the diagram: 1. Signal input terminal; 2. Power supply terminal; 3. Control circuit module; 4. Air supply solenoid valve; 5. Exhaust solenoid valve; 6. Pilot valve; 7. Diaphragm; 8. Pressure sensor; 9. Pilot chamber; 10. Pressure display; 11. Output signal; 12. Exhaust port one; 13. Valve body; 14. Air supply port; 15. Output port; 16. Exhaust port two; 17. Air supply valve; 18. Exhaust valve. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-3 This invention provides a technical solution: an automatic blade pressure adjustment device for cutting liquid crystal glass substrates, comprising three parts: a cutting blade mechanism, an electro-proportional valve, and a DA module. The cutting blade mechanism includes a blade and a cylinder. The electro-proportional valve is connected to the air inlet that controls the extension of the blade cylinder. The DA module is connected to the electro-proportional valve. The electro-proportional valve includes a signal input terminal 1, a power supply terminal 2, a control circuit module 3, an air supply solenoid valve 4, an exhaust solenoid valve 5, a pilot valve 6, a diaphragm 7, and a pressure sensor 8. The signal input terminal 1 and the power supply terminal 2 are connected via a circuit... The control loop module 3 is connected to the air supply solenoid valve 4 and the exhaust solenoid valve 5 respectively. Both the air supply solenoid valve 4 and the exhaust solenoid valve 5 are connected to the pilot valve 6. The pilot valve 6 delivers pressure to the cutter head and controls the cutter head to extend. The pilot valve 6 is equipped with a pilot chamber 9. The diaphragm 7 is located in the pilot chamber 9. The pressure sensor 8 is connected to the pilot valve 6 through a line. The pressure sensor 8 receives the output pressure of the pilot valve 6 and then feeds it back to the control loop module 3. The control loop module 3 is also equipped with a pressure display 10 and an output signal 11.

[0020] Further improvements, such as Figure 1 As shown: The electric proportional valve can be selected from either the 0-10V voltage input type or the 4-20mA current input type.

[0021] Further improvements, such as Figure 1 As shown: Select the Q64DAN model DA module, which can be connected to voltage output and current output. Connect the DA module to a 24V power supply.

[0022] Further improvements, such as Figure 1 As shown: The exhaust solenoid valve 5 is equipped with an exhaust port 12, which is used to exhaust gas.

[0023] Further improvements, such as Figure 1 As shown: The pilot valve 6 includes a valve body 13, an air supply port 14, an output port 15, an exhaust port 2 16, an air supply valve 17, and an exhaust valve 18. The air supply port 14 and the output port 15 are respectively opened on both sides of the valve body 13. The exhaust port 2 16 is opened above the output port 15. The air supply valve 17 is installed at the air supply port 14, and the exhaust valve 18 is installed at the exhaust port 2 16.

[0024] Specifically, the control loop module 3 receives the pressure signal and then automatically corrects it based on the cutting condition after the cutter head wears down.

[0025] In use: This invention connects the DA module to a 24V power supply, and then follows... Figure 3 The wiring method involves connecting the DA module to the electro-proportional valve, and finally connecting the electro-proportional valve to the air inlet that controls the extension of the cutter head cylinder. After the input signal is connected to the control circuit module 3, it is transmitted to the air supply solenoid valve 4 and the exhaust solenoid valve 5 respectively. The air supply solenoid valve 4 supplies pressure to the pilot valve 6 and outputs pressure to the cutter head to control its extension. At the same time as the output pressure, the pressure sensor 8 also receives the output pressure from the pilot valve 6 and feeds it back to the control circuit. The control circuit receives the pressure signal and automatically corrects (increases the output pressure) according to the cutting condition after the cutter head wears, thereby achieving automatic control of the cutter head pressure and reducing product loss caused by manual adjustment of cutter pressure and cutter replacement.

[0026] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic blade pressure adjustment device for cutting liquid crystal glass substrates, characterized in that: It includes cutting knife mechanism, electrical proportional valve and DA module, the cutting knife mechanism includes knife and cylinder, the electrical proportional valve is connected with the air inlet of controlling knife cylinder extension, the DA module is connected with the electrical proportional valve, the electrical proportional valve includes signal input end (1), power end (2), control loop module (3), air supply electromagnetic valve (4), exhaust electromagnetic valve (5), pilot valve (6), diaphragm (7) and pressure sensor (8), the signal input end (1) is connected with the power end (2) through line and control loop module (3), the control loop module (3) respectively transmits signal to air supply electromagnetic valve (4), exhaust electromagnetic valve (5), the air supply electromagnetic valve (4), exhaust electromagnetic valve (5) are connected with pilot valve (6), the pilot valve (6) is transported to the pressure of knife and controls the extension of knife, the pilot valve (6) is provided with pilot chamber (9) inside, the diaphragm (7) is located in pilot chamber (9) position, the pressure sensor (8) is connected with pilot valve (6) through line, the pressure sensor (8) receives the output pressure of pilot valve (6), and then feedback is given to control loop module (3), the control loop module (3) is also equipped with pressure display (10) and output signal (11), the DA module selects Q64DAN model and can connect voltage output, current output, the DA module is connected with 24V power supply.

2. The knife pressure automatic adjusting device for cutting liquid crystal glass substrate according to claim 1, characterized in that: The electrical proportional valve selects one of 0-10V voltage input type and 4-20mA current input type.

3. The knife pressure automatic adjusting device for cutting liquid crystal glass substrate according to claim 1, characterized in that: The exhaust electromagnetic valve (5) is provided with exhaust port one (12), which is used for exhausting gas.

4. The knife pressure automatic adjusting device for cutting liquid crystal glass substrate according to claim 1, characterized in that: The pilot valve (6) includes valve body (13), air supply port (14), output port (15), exhaust port two (16), air supply valve (17) and exhaust valve (18), the air supply port (14) and output port (15) are respectively arranged on the two sides of valve body (13), the exhaust port two (16) is arranged above the output port (15), the air supply valve (17) is installed at the air supply port (14), and the exhaust valve (18) is installed at the exhaust port two (16).

5. The knife pressure automatic adjusting device for cutting liquid crystal glass substrate according to claim 1, characterized in that: The control loop module (3) receives pressure signal, and then automatically corrects according to the cutting condition of the knife after wear.

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