Centralized oil supply system and oil supply method for enameling machine

Abstract

The present invention relates to a centralized oil supply system and oil supply method for an enameling machine that can achieve accurate oil supply and oil saving without human operation, and can avoid pollution to the environment. The raw material tank is connected to the inlet of a centrifugal pump through an oil pipeline, and the control end of the centrifugal pump is controlled by the instruction issued by the controller through a wired or wireless channel. The outlet of the centrifugal pump is connected to the inlet of the solenoid valve through an oil pipeline, and the control end of the solenoid valve is controlled by the instruction issued by the controller through a wired or wireless channel. The outlet of the solenoid valve is connected to the inlet of the oil storage tank through an oil pipeline, and the outlet of the oil storage tank is connected to the inlet of the first solenoid valve and the second solenoid valve through an oil pipeline. The control ends of the first solenoid valve and the second solenoid valve are controlled by the instruction issued by the controller through a wired or wireless channel, and the outlets of the first solenoid valve and the second solenoid valve are connected to the oil inlets at both ends of the oil tank through an oil pipeline. Advantages: accurate oil supply, cost saving, clean workshop environment, no need for operating staff to add oil, only technicians need to supply oil once a week, which greatly reduces the workload of employees.

Description

Technical Field

[0001] The invention relates to a centralized oil supply system and oil supply method for an enameling machine which can achieve accurate oil supply and oil saving without human operation and can avoid environmental pollution and is safe and reliable, and belongs to the manufacturing field of centralized oil supply system for enameling machines. Background Art

[0002] Traditional oiling is to place a small oil tank next to the machine, and use a pump to continuously pump oil from the oil tank to the oiling tank. The excess oil flows back through the return pipe, and the oil control is just to provide sufficient oil. The shortcomings: In daily management, due to employee negligence, the machine oil is often insufficient, resulting in insufficient product coating and quality problems. Even if the oil is sufficient, due to control problems, excessive oiling leads to waste of raw materials, and the excess oil will splash into the workshop, polluting the environment and creating safety hazards. Summary of the invention

[0003] Design purpose: To avoid the shortcomings of the background technology, a centralized oil supply system and oil supply method for enameling machines is designed that can achieve accurate oil supply and fuel saving without human operation, avoid environmental pollution, and at the same time be safe and reliable.

[0004] Design scheme: In order to achieve the above-mentioned design objectives. Based on the background technology, the present invention is composed of a raw material tank, a centrifugal pump, an oil storage tank, an oil coating tank, a controller, a solenoid valve and an oil pipeline. 1. Oil supply control: Use a centrifugal pump to pump the lubricating oil in the raw material tank into the oil storage tank on the platform. An ultrasonic liquid level sensor is installed on the top of the oil storage tank. The sensor outputs a linear analog signal through the pressure difference generated by the liquid level on the sensing point. The controller can indicate the liquid level in the tank in proportion to the size of the analog signal. (This control method is a well-known control mode). When the liquid level in the tank is lower than the lower limit of the set value, the controller can generate an audible and visual alarm prompt. When the centrifugal pump is working, if the liquid level is too high, the centrifugal pump will automatically stop working to prevent overflow. 2. Oiling control: The lubricating oil uses potential energy to flow from the oil storage tank to the oil coating tank. The controller uses the on and off of the solenoid valve on the pulse control pipeline to control the amount of lubricating oil flowing into the oil coating tank. Reference Figure 3 .

[0005] Technical Solution 1: A centralized oil supply system for an enameling machine, including a PLC controller, which is composed of a raw material tank, a centrifugal pump, a solenoid valve, an oil storage tank, a first oil supply solenoid valve, a second oil supply solenoid valve, an oil coating tank, a controller and an oil pipeline; the raw material tank is connected to the inlet of the centrifugal pump through an oil pipeline, the control end of the centrifugal pump is controlled by the instruction issued by the PLC controller through a wired or wireless channel, the outlet of the centrifugal pump is connected to the inlet of the solenoid valve through the oil pipeline, the control end of the solenoid valve is controlled by the instruction issued by the PLC controller through a wired or wireless channel, the outlet of the solenoid valve is connected to the inlet of the oil storage tank through the oil pipeline, the outlet of the oil storage tank is connected to the inlet of the first solenoid valve and the second solenoid valve through the oil pipeline, the control ends of the first solenoid valve and the second solenoid valve are controlled by the instruction issued by the PLC controller through a wired or wireless channel, and the outlets of the first solenoid valve and the second solenoid valve are connected to the oil inlets at both ends of the oil coating tank through the oil pipeline.

[0006] Technical Solution 2: An oil supply method for a centralized oil supply system of an enameling machine, including a PLC controller, oil supply: a centrifugal pump is used to pump the lubricating oil in the raw material tank into the oil storage tank on the platform, an ultrasonic level sensor is installed on the top of the oil storage tank, the ultrasonic sensor outputs a linear analog signal through the pressure difference generated by the liquid level to the sensing point, the controller indicates the liquid level in the tank in proportion to the analog signal size, when the liquid level in the tank is lower than the lower limit of the set value, the controller can generate an audible and visual alarm prompt, when the centrifugal pump is working, if the liquid level is too high, the centrifugal pump will be automatically stopped Stop working to prevent overflow; Oiling control: PLC controller uses pulse control pipeline solenoid valve on the on-off to control the amount of lubricating oil flowing into the oiling tank, the control process: a. PLC controller built-in interrupt 1 press 50ms to generate an interrupt; b. The touch screen can set the time of solenoid valve opening, opening time = 50ms * duration; c. Multiply the system related to product coating: speed * wire diameter * density * coating efficiency * concentration; d. After entering the required coating amount of the product, automatically calculate the number of pulses of the solenoid valve opened in 1 minute.

[0007] Compared with the background technology, the present invention has the following differences: first, the background technology places a small oil storage tank next to the machine, and uses a pump to continuously pump oil from the oil storage tank to the oiling tank. The excess oil flows back through the reflux pipe. The control of the oil is only to provide sufficient oil, while the system of the present invention uses as much oil as the product needs. The injection oil volume of a single pulse is 0.6ml, and the amount of oil required for production is injected in multiples of 0.6ml; second, the oiling system of the background technology cannot control the amount of lubricating oil very well, which is often too much or too little. The present invention can accurately supply oil, save costs, and clean the workshop environment (the background technology oiling system requires about 23.4 kg of oil per ton of product, and the oiling system of the present invention requires about 10 kg of oil per ton of product). The product consumes about 18.4 kg of oil, that is, 5 kg of oil is saved for every ton of product. In 2021, the company's annual output of enameled wire is about 6,933 tons. Calculated at a unit price of 12.3 yuan per kilogram, the direct cost savings are about 5x6,933x12.3=426,397.5 yuan, or about 426,000 yuan; third, the oil storage tank in the background technology is small, and employees are required to add lubricating oil frequently, and each shift requires management. After adopting the oil supply system of the present invention, operating employees do not need to add oil, and technicians only need to supply it once a week, which greatly reduces the workload of employees; fourth, the background technology of multi-point storage of lubricating oil has certain safety hazards. After centralized oil supply, there is no need to store it near the machine, which is clean, environmentally friendly and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is the centralized oil supply system of the enameling machine.

[0009] Figure 2 yes Figure 1 Schematic diagram of the oiling tank in .

[0010] Figure 3 It is a flow chart of how the PLC controller uses pulses to control the on and off of the solenoid valve on the pipeline to control the amount of lubricating oil flowing into the oiling tank. DETAILED DESCRIPTION

[0011] Embodiment 1: refer to the attached Figure 1 and 2A centralized oil supply system for an enameling machine includes a PLC controller 10, which is composed of a raw material tank 1, a centrifugal pump 2, a solenoid valve 3, an oil storage tank 4, a first oil supply solenoid valve 6, a second oil supply solenoid valve 9, an oil coating tank 7, a controller 10 and an oil pipeline; the raw material tank 1 is connected to the inlet of the centrifugal pump 2 through an oil pipeline, the control end of the centrifugal pump 2 is controlled by the instruction issued by the PLC controller 10 through a wired or wireless channel, the outlet 2 of the centrifugal pump is connected to the inlet of the solenoid valve 3 through an oil pipeline, the control end of the solenoid valve 3 is controlled by the instruction issued by the PLC controller 10 through a wired or wireless channel, the outlet of the solenoid valve 3 is connected to the inlet of the oil storage tank 4 through an oil pipeline, the outlet of the oil storage tank 4 is connected to the inlet of the first solenoid valve 6 and the second solenoid valve 9 through an oil pipeline, the control ends of the first solenoid valve 6 and the second solenoid valve 9 are controlled by the instruction issued by the PLC controller 10 through a wired or wireless channel, and the outlets of the first solenoid valve 6 and the second solenoid valve 9 are respectively connected to the oil inlets at both ends of the oil coating tank 7 through the oil pipeline.

[0012] The oiling tank 7 is composed of an oil tank 73, an oiling roller 71 and a motor 72. The oiling roller 71 is located in the oil tank 73. The motor 72 drives the oiling roller 71 to rotate. The manufacturing process is prior art and will not be described here.

[0013] The oiling tank 7 is located on the machine platform 8. The manufacturing of the machine platform 8 is a prior art and will not be described here.

[0014] The top of the oil storage tank 4 is equipped with an ultrasonic level sensor 5, which exchanges data with the PLC control.

[0015] To prevent lubricating oil contamination, the raw material tank 1, the oil storage tank 4, the oil coating tank 7 and the oil pipeline are all made of 304 stainless steel.

[0016] The solenoid valve is made of stainless steel and the valve core is made of polytetrafluoroethylene.

[0017] Example 2: Refer to the attached Figure 3 . Based on Example 1, an oil supply method for a centralized oil supply system of an enameling machine includes a PLC controller 10, and oil supply: a centrifugal pump 2 is used to pump the lubricating oil in a raw material tank 1 into an oil storage tank 4 on a platform, and an ultrasonic level sensor 5 is installed on the top of the oil storage tank 4. The ultrasonic level sensor 5 outputs a linear analog signal through the pressure difference generated by the liquid level on the sensing point. The controller 10 indicates the liquid level in the tank in proportion to the size of the analog signal. When the liquid level in the tank is lower than the lower limit of the set value, the controller 10 can generate an audible and visual alarm prompt. When the centrifugal pump 2 is working, if the liquid level is too high, the centrifugal pump 2 will automatically stop working to prevent overflow;

[0018] Oiling control: PLC controller 10 uses pulse control to control the on and off of the solenoid valve on the pipeline to control the amount of lubricating oil flowing into the oiling tank. The control process is as follows:

[0019] a. The built-in interrupt 1 of the PLC controller generates an interrupt once every 50ms;

[0020] b. The opening time of the solenoid valve can be set on the touch screen. The opening time is 50ms*time.

[0021] c. Multiply the system related to product coating: speed * wire diameter * density * coating efficiency * concentration;

[0022] d. After inputting the coating amount required by the product, the number of pulses of the solenoid valve opened in 1 minute is automatically calculated.

[0023] An oiling roller rotates at a constant speed in the oiling tank, bringing the oil at the bottom of the tank evenly to the surface of the oiling roller.

[0024] During the production process, the enameled wire passes through the groove of the oiling roller at a constant speed, taking away the surface lubricating oil.

[0025] It should be understood that although the above embodiments provide a relatively detailed textual description of the design ideas of the present invention, these textual descriptions are only simple textual descriptions of the design ideas of the present invention, rather than limitations on the design ideas of the present invention. Any combination, addition or modification that does not exceed the design ideas of the present invention shall fall within the protection scope of the present invention.

Claims

1. A centralized oil supply system for an enameling machine, comprising a PLC controller (10), characterized in that The invention comprises a raw material tank (1), a centrifugal pump (2), a solenoid valve (3), an oil storage tank (4), a first oil supply solenoid valve (6), a second oil supply solenoid valve (9), an oil coating tank (7), a controller (10) and an oil pipeline; the raw material tank (1) is connected to the inlet of the centrifugal pump (2) through the oil pipeline, the control end of the centrifugal pump (2) is controlled by a command issued by a PLC controller (10) through a wired or wireless channel, the outlet of the centrifugal pump (2) is connected to the inlet of the solenoid valve (3) through the oil pipeline, and the control end of the solenoid valve (3) is controlled by a command issued by a PLC controller (10) through a wired or wireless channel. The outlet of the solenoid valve (3) is connected to the inlet of the oil storage tank (4) through the oil pipeline, and the outlet of the oil storage tank (4) is connected to the inlets of the first oil supply solenoid valve (6) and the second oil supply solenoid valve (9) through the oil pipeline. The control ends of the first oil supply solenoid valve (6) and the second oil supply solenoid valve (9) are controlled by the instruction issued by the PLC controller (10) through a wired or wireless channel. The outlets of the first oil supply solenoid valve (6) and the second oil supply solenoid valve (9) are connected to the oil inlets at both ends of the oil tank (7) through the oil pipeline. The oil supply method thereof: The system uses as much oil as the product needs. The injection volume of a single pulse is 0.6ml, and the amount of oil required for production is injected in multiples of 0.6ml. Oil supply: The lubricating oil in the raw material tank (1) is pumped into the oil storage tank (4) on the platform by a centrifugal pump (2). An ultrasonic level sensor (5) is installed on the top of the oil storage tank (4). The ultrasonic level sensor (5) outputs a linear analog signal through the pressure difference generated by the liquid level on the sensing point. The PLC controller (10) indicates the liquid level in the tank in proportion to the analog signal. When the liquid level in the tank is lower than the lower limit of the set value, the PLC controller (10) generates an audible and visual alarm. When the centrifugal pump (2) is working, if the liquid level is too high, the centrifugal pump (2) will automatically stop working to prevent overflow. Oiling control: Lubricating oil uses potential energy to flow from the oil storage tank to the oiling tank. The PLC controller (10) uses the on-off of the solenoid valve on the pulse control pipeline to control the amount of lubricating oil flowing into the oiling tank. The control process is as follows: a. The built-in interrupt of the PLC controller generates an interrupt every 50ms; b. The opening time of the solenoid valve can be set on the touch screen. The opening time is 50ms*time. c. Multiply the system related to product coating: speed * wire diameter * density * coating efficiency * concentration; d. After inputting the coating amount required by the product, the number of pulses of the solenoid valve opened in 1 minute is automatically calculated.

2. The centralized oil supply system for enameling machines according to claim 1 is characterized in that: The oil tank (7) is composed of an oil tank (73), an oil coating roller (71) and a motor (72). The oil coating roller (71) is located in the oil tank (73), and the motor (72) drives the oil coating roller (71) to rotate.

3. The centralized oil supply system for enameling machines according to claim 1 or 2, characterized in that: The oiling tank (7) is located on the machine platform.

4. The centralized oil supply system for enameling machines according to claim 1 is characterized in that: An ultrasonic liquid level sensor (5) is installed on the top of the oil storage tank (4).

5. The centralized oil supply system for enameling machines according to claim 1 is characterized in that: The oil pipelines are all made of 304 stainless steel pipes.

6. The centralized oil supply system for enameling machines according to claim 1 is characterized by: The solenoid valve is made of stainless steel and the valve core is made of polytetrafluoroethylene.

7. The centralized oil supply system for enameling machines according to claim 1 is characterized by: An oiling roller rotates at a constant speed in the oiling tank, bringing the oil at the bottom of the tank evenly to the surface of the oiling roller. During the production process, the enameled wire passes through the groove of the oiling roller at a constant speed, taking away the surface lubricating oil.

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