Automatic control system of optical lens polishing equipment

Abstract

The invention discloses an automatic control system of lens polishing equipment, and belongs to the technical field of optical lens processing. The automatic pressure regulating valve is in two-way communication connection with the PLC; the power supply input end of the electromagnetic valve is connected with the output end of an intermediate relay controlled by the PLC; an air inlet of the electromagnetic valve is connected with an air outlet of the automatic pressure regulating valve, and a working port of the electromagnetic valve is connected with a working port of the air cylinder; a traditional manual operation mode is replaced, the polishing speed and the polishing pressure in the polishing working process can be automatically adjusted, the polishing effect and quality of optical lenses during batch production are improved, the purpose of automatic polishing is achieved, the working process can be recorded in real time, power failure or stopping is conducted in the middle, and the polishing efficiency is greatly improved when automatic working is conducted after starting is conducted. Next unfinished work may be selected to continue, or the system is made to work from a new place.

Description

Technical Field

[0001] The invention belongs to the technical field of optical lens processing, and in particular relates to a control system of an automatic control system of a lens polishing device. Background Art

[0002] At present, with the continuous development of the optical lens industry, the specifications of lenses are becoming more and more stringent; lens polishing refers to a processing method that reduces the roughness of the workpiece surface under mechanical action to obtain a bright and flat surface. The workpiece surface is modified using polishing tools or other polishing media. The purpose of polishing is to obtain a smooth surface on the workpiece or a glossy lens.

[0003] However, the old control system is purely manual operation. The polishing speed and polishing pressure during the polishing process are all manually adjusted at a fixed time. The product quality depends on human experience and sense of responsibility. The quality cannot be guaranteed during mass production. Therefore, it is necessary to provide an automatic control system for optical lens polishing equipment to solve the above technical problems. Summary of the invention

[0004] To solve the problems raised in the above background technology. The present invention provides a control system for an automatic control system of a lens polishing device, which replaces the traditional manual operation mode, can automatically adjust the polishing speed and polishing pressure during the polishing process, improves the polishing effect and quality of optical lenses during mass production, and achieves the purpose of automated polishing.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a control system of an automatic control system of a lens polishing device, comprising: PLC controller: responsible for receiving signals, processing and judging data, and issuing control signals; Automatic pressure regulating valve: The automatic pressure regulating valve is connected to the PLC controller in a two-way communication manner, adjusts the output air pressure according to the signal sent by the PLC controller, and can feed back the output air pressure signal to the input end of the PLC controller; Solenoid valve: The power input end of the solenoid valve is connected to the output end of the intermediate relay controlled by the PLC, which is used to control the solenoid valve to open or close; The air inlet of the solenoid valve is connected to the air outlet of the automatic pressure regulating valve, and the working port of the solenoid valve is connected to the working port of the cylinder, so as to allow pressurized gas to enter or discharge the cylinder, and to control whether the cylinder is pressurized. The pressure output by the cylinder is determined by the gas pressure output by the automatic pressure regulating valve entering the cylinder.

[0006] Preferably, it also includes a touch display screen, which is connected to the PLC controller in a two-way communication manner to monitor the status of the system in real time, send control commands as needed, and adjust system parameters or user data.

[0007] Preferably, it also includes a frequency converter, wherein the analog input terminal of the frequency converter is connected to the analog output terminal of the PLC controller, the switch input terminal of the frequency converter is connected to the output terminal of the intermediate relay controlled by the PLC controller, and the output terminal of the frequency converter is connected to the input terminal of the motor, so as to adjust the speed of the motor, control the rotation of the lens disk and the swing of the polishing head.

[0008] Preferably, it also includes an air supply device, the air outlet of which is connected to the air inlet of the automatic pressure regulating valve, for providing pressurized gas, which provides power to the cylinder after passing through the automatic regulating valve and the solenoid valve.

[0009] Preferably, a pressure transmitter is also included, and the output end of the pressure transmitter is connected to the input end of the PLC controller for real-time monitoring of the pressure change of the gas supply equipment.

[0010] Preferably, a liquid spray pump is also included, the input end of which is connected to the output end of the PLC controller and is used to spray the polishing liquid onto the contact area between the polishing head and the optical lens.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention replaces the traditional manual operation mode through the control system, can automatically adjust the polishing speed and polishing pressure during the polishing process, improves the polishing effect and quality of optical lenses during mass production, and realizes the purpose of automated polishing.

[0012] 2. The present invention can record the working process in real time through the control system. When the power is cut off or stopped in the middle and the machine is restarted to work automatically, it can be selected to continue the unfinished work or to make the system start working again.

[0013] 3. The present invention can record the replacement of polishing powder and working time through the control system. When the working time of polishing powder reaches the set maximum working time, it will prompt that the polishing powder needs to be replaced when it starts working again on the same day. It is just a prompt on the same day. If it is not replaced, it will not work the next day. It can only work normally after replacement. It is used to ensure the concentration and grinding ability of polishing powder, thereby ensuring the polishing quality and polishing efficiency of the product. With the record of the working time of polishing powder, the waste caused by replacing it before the time is up is also avoided.

[0014] 4. The present invention can measure the temperature in the electrical box through the control system, and turn on and off the cooling fan on the chassis according to the set maximum and minimum temperatures; in the original circuit, the cooling fan is not controlled and keeps running as soon as the machine is powered on until it breaks down. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the control system flow structure of the present invention; DETAILED DESCRIPTION The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Example 1 See also Figure 1 ,This embodiment provides the following technical solutions: An automatic control system for lens polishing equipment, including a PLC controller: responsible for receiving signals, performing data processing and judgment, and issuing control signals; It also includes a touch screen, which is connected to the PLC controller in a two-way communication manner to monitor the status of the system in real time, send control commands as needed, and adjust system parameters or user data; Automatic pressure regulating valve: The automatic pressure regulating valve is connected to the PLC controller in a two-way communication manner, adjusts the output air pressure according to the signal sent by the PLC controller, and can feed back the output air pressure signal to the input end of the PLC controller.

[0017] Solenoid valve: The power input end of the solenoid valve is connected to the output end of the intermediate relay controlled by the PLC, which is used to control the solenoid valve to open or close. The air inlet of the solenoid valve is connected to the air outlet of the automatic pressure regulating valve. The working port of the solenoid valve is connected to the working port of the cylinder to allow pressurized gas to enter or discharge the cylinder, and to control whether the cylinder is pressurized. The pressure output by the cylinder is determined by the gas pressure output by the automatic pressure regulating valve entering the cylinder.

[0018] It also includes a frequency converter, wherein the analog input end of the frequency converter is connected to the analog output end of the PLC controller, the switch input end of the frequency converter is connected to the output end of the intermediate relay controlled by the PLC controller, and the output end of the frequency converter is connected to the input end of the motor, so as to adjust the rotation speed of the motor, control the rotation of the lens plate and the swing of the polishing head.

[0019] It also includes an air supply device, the air outlet of which is connected to the air inlet of the automatic pressure regulating valve, and can provide pressurized gas to enter the cylinder through the automatic regulating valve and the solenoid valve to provide the required power for the cylinder.

[0020] It also includes a pressure transmitter, the output end of which is connected to the input end of the PLC controller for real-time monitoring of the pressure changes of the gas supply equipment. When it is monitored that the output air pressure of the gas supply equipment does not reach the working air pressure required by the polishing equipment, the polishing equipment will alarm and stop working.

[0021] The present invention replaces the traditional manual operation mode by a control system, and can automatically adjust the polishing speed and polishing pressure during the polishing process, thereby improving the effect and quality of batch polishing of optical lenses and achieving the purpose of automatic polishing. In addition, the working process can be recorded in real time. When the power is cut off or stopped in the middle and the machine is restarted to work automatically, it can be selected to continue the unfinished work or make the system start working again.

[0022] It also includes a spray pump, the input end of which is connected to the output end of the PLC controller, and the liquid inlet end of the spray pump is connected to the polishing liquid storage tank through a delivery pipe, and the liquid outlet end of the spray pump is connected to a spray pipe for spraying the polishing liquid onto the contact area between the polishing head and the optical lens.

[0023] Since the polishing liquid is a mixture of polishing powder and liquid medium, the replacement of traditional polishing powder is generally estimated by workers, and it is replaced after working for a few days. There are problems of low efficiency, heavy workload and waste of polishing powder. Under the design of this automatic control system, the timing and scheduled replacement method can be adopted to record the replacement and working time of polishing powder. When the working time of polishing powder reaches the set maximum working time, it will be prompted to replace the polishing powder when it starts working again that day. It is just a reminder on the day. If it is not replaced, it will not work the next day. It can only work normally after replacement; it is used to ensure the concentration and grinding ability of polishing powder, thereby ensuring the polishing quality and polishing efficiency of the product; with the record of polishing powder working time, it also avoids the waste caused by replacing it before the time comes.

[0024] Moreover, in the original circuit, heat is dissipated through the cooling fan, but because the cooling fan is not controlled, it keeps running as soon as the machine is powered on until it breaks down. After the design of this automation system, the temperature in the electrical box can be measured, and the cooling fan on the chassis can be turned on and off according to the set maximum and minimum temperatures, which can save energy and extend the service life of the cooling fan.

[0025] The working principle of the present invention is as follows: first, the working data is set by touching the display screen, and the working data includes the number of working sections, the working time of each section, the working air pressure, and the working speed. After the working data is set, it can be saved in the corresponding working program number as user data.

[0026] When in use, place the optical lens on the lens tray, click the touch screen, select the corresponding program number according to the polishing requirements, call up the corresponding working data, press the automatic state on the touch screen, and then press start to start automatic work, so that the lens tray rotates, and the polishing head starts to swing regularly, so as to automatically polish the optical lens; Then the PLC controller will start working from the first stage according to the corresponding working data, call out the corresponding stage number data, control the automatic pressure regulating valve to adjust the pressure, open the solenoid valve to pressurize the cylinder, and keep working until the air pressure reaches the set value; During the polishing process of the polishing tool, the pressure transmitter will detect the pressure changes of the air supply equipment in real time, and the automatic pressure regulating valve will monitor and adjust the air pressure of the cylinder in real time. According to the demand, the cylinder will be automatically pressurized or depressurized to always adjust the pressure of the polishing head; And it automatically records the working section number and working time during operation to prevent accidental shutdown. It can continue to work at the next start. When the working time reaches the value set for the working section, the working section number is increased by one, and it is judged whether it is completed. If it is not completed, the corresponding section number data is called up to continue working. When it is judged to be completed, the cylinder actuator stops working, the automatic pressure regulating valve adjusts the pressure to zero, and the solenoid valve is closed, the cylinder has no pressure and does not move, thus completing the polishing operation.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Automatic control system for lens polishing equipment, characterized by: include: PLC controller: responsible for receiving signals, processing and judging data, and issuing control signals; Automatic pressure regulating valve: The automatic pressure regulating valve is connected to the PLC controller in a two-way communication manner, adjusts the output air pressure according to the signal sent by the PLC controller, and can feed back the output air pressure signal to the input end of the PLC controller; Solenoid valve: The power input end of the solenoid valve is connected to the output end of the intermediate relay controlled by the PLC, which is used to control the solenoid valve to open or close; The air inlet of the solenoid valve is connected to the air outlet of the automatic pressure regulating valve, and the working port of the solenoid valve is connected to the working port of the cylinder, so as to allow pressurized gas to enter or discharge the cylinder, and to control whether the cylinder is pressurized. The pressure output by the cylinder is determined by the gas pressure output by the automatic pressure regulating valve entering the cylinder.

2. The automatic control system of the lens polishing equipment according to claim 1, characterized in that: It also includes a touch display screen, which is connected to the PLC controller for two-way communication, and is used to monitor the status of the system in real time, send control commands as needed, and adjust system parameters or user data.

3. The automatic control system of the lens polishing equipment according to claim 1, characterized in that: It also includes a frequency converter, wherein the analog input end of the frequency converter is connected to the analog output end of the PLC controller, the switch input end of the frequency converter is connected to the output end of the intermediate relay controlled by the PLC controller, and the output end of the frequency converter is connected to the input end of the motor, so as to automatically adjust the rotation speed of the motor, control the rotation of the lens plate and the swing of the polishing head.

4. The automatic control system of the lens polishing equipment according to claim 1, characterized in that: It also includes an air supply device, the air outlet of which is connected to the air inlet of the automatic pressure regulating valve, so that the output air pressure provides power to the cylinder after passing through the automatic regulating valve and the solenoid valve.

5. The automatic control system of the lens polishing equipment according to claim 4, characterized in that: It also includes a pressure transmitter, the output end of which is connected to the input end of the PLC controller for real-time monitoring of pressure changes of the gas supply equipment.

6. The automatic control system of the lens polishing equipment according to claim 1, characterized in that: It also includes a liquid spray pump, the input end of which is connected to the output end of the PLC controller and is used to spray polishing liquid onto the contact area between the polishing head and the optical lens.

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