A pneumatic pressure stabilizing control system for a nickel starting sheet processing unit

Abstract

The utility model discloses a kind of nickel starting sheet processing unit pneumatic pressure stabilizing control system, to solve the problem of high failure rate of suction sheet, unstable punching and riveting force and push bar not in place caused by insufficient and fluctuation of air source pressure in prior art.The system includes monitoring layer, control layer and the execution unit consisting of truss mechanical hand unit, pin ear unit and rod penetrating unit.Monitoring layer uses pressure sensor to collect the pressure data of processing workshop main gas path in real time, and is transmitted to PLC controller as control core.Control layer also includes booster pump, proportional valve and multiple solenoid valves.PLC controller analyzes pressure data according to preset algorithm, carries out pressure compensation by controlling booster pump start-stop, and drives solenoid valve to realize the on-off of the gas path of each execution unit.Punching and riveting pressure of pin ear unit is dynamically adjusted by proportional valve, and the action cycle of rod penetrating unit is adjusted to adapt to pressure fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of nickel starting electrode processing technology, and in particular to a pneumatic pressure stabilization control system for a nickel starting electrode processing unit. Background Technology

[0002] In the nickel starting sheet processing, the pneumatic system provides power to key actuators, mainly including the suction cups of the gantry robot, the riveting cylinders of the lug unit, and the pusher cylinders of the rod-passing unit. Traditional pneumatic control systems employ a single pressure compensation strategy, which cannot adapt to the differentiated air pressure requirements of various actuators such as the gantry robot, lug unit, and rod-passing unit. Furthermore, the system lacks real-time monitoring and rapid dynamic response mechanisms for air source pressure, resulting in an inability to adjust in a timely manner when pressure fluctuates, leading to the following problems: (1) When the air source pressure is lower than 0.45MPa, it is difficult to maintain the vacuum of the gantry robot's suction cup, resulting in a suction failure rate of more than 60%, which seriously affects the continuity of production. (2) Fluctuations in air source pressure (e.g., ±0.07MPa) will directly cause instability in the riveting force of the lug unit. The fluctuation range of the riveting force exceeds ±10%, resulting in a product defect rate as high as 12%. (3) Due to unstable pressure, the pusher cylinder of the rod-threading unit often fails to push the rod into place, resulting in a positioning accuracy error exceeding ±1mm, which affects the assembly quality of subsequent processes. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a pneumatic pressure stabilization control system for a nickel starting electrode processing unit, which solves the problems in the prior art such as high failure rate of electrode suction, unstable riveting force, and incomplete positioning of push rod caused by insufficient air source pressure and pressure fluctuations.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows: A pneumatic voltage stabilization control system for a nickel starter sheet processing unit includes a gantry robot unit, a nail lug unit, and a rod threading unit installed in the processing workshop, and also includes a monitoring layer and a control layer; The control layer includes a PLC controller, a booster pump, a proportional valve, and a solenoid valve; The monitoring layer is a pressure sensor, which is installed at the main air inlet of the processing workshop, and its signal output terminal is electrically connected to the signal input terminal of the PLC controller. The PLC controller signal output terminals are electrically connected to the start / stop control terminal of the booster pump, the opening control terminal of the proportional valve, and the reversing control terminal of the solenoid valve, respectively. The air inlet of the booster pump is connected to the main air circuit of the processing workshop, and the air outlet is connected to the pneumatic main pipeline. The pneumatic main pipeline is divided into three branch pipes, each of which is connected to a solenoid valve. The air outlets of the three solenoid valves are respectively connected to the air inlet of the vacuum generator of the gantry manipulator unit, the air inlet of the riveting cylinder of the nail ear unit, and the air inlet of the pusher cylinder of the rod insertion unit. The proportional valve is connected in series with the pneumatic branch pipe corresponding to the nail unit, and its control terminal is electrically connected to the output terminal of the PLC controller. Compared with existing technologies, the advantages of this invention are as follows: This system monitors the main air circuit pressure in real time through a pressure sensor, with a PLC controller as the core processing unit. When insufficient pressure is detected, the PLC controller starts a booster pump to increase the pressure and prioritizes the air supply to the pressure-sensitive gantry robot unit through a solenoid valve, ensuring the success rate of the suction plate. For the riveting lug unit, the PLC dynamically adjusts the valve opening according to pressure fluctuations through a series proportional valve, accurately compensating for the fluctuations in riveting force caused by pressure changes and ensuring riveting quality. For the rod insertion unit, the action cycle of the push rod cylinder is adjusted to adapt to the thrust changes that may be caused by pressure fluctuations, ensuring that the rod is pushed into place. This differentiated compensation strategy for different units avoids the limitations of traditional single compensation methods and improves the stability and reliability of the entire pneumatic system. Attached Figure Description

[0005] Figure 1 This is a control system diagram of the present invention.

[0006] In the picture: 1. Machining workshop; 2. Truss robot unit; 3. Nail ear unit; 4. Rod threading unit; 5. PLC controller; 6. Booster pump; 7. Proportional valve; 8. Solenoid valve; 9. Pressure sensor; 10. Main air circuit of machining workshop; 11. Main pneumatic pipeline. Detailed Implementation

[0007] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0008] The present invention discloses a pneumatic pressure stabilization control system for a nickel starting electrode processing unit, which mainly consists of a monitoring layer, a control layer, and execution units (gantry robot unit 2, nail ear unit 3, and rod threading unit 4).

[0009] The monitoring layer mainly consists of pressure sensor 9, which is installed at the inlet of the main air passage 10 in the processing workshop. It is used to collect the pressure data of the air source in real time and transmit the collected analog or digital signals to the PLC controller 5 of the control layer.

[0010] The control layer includes a PLC controller 5, a booster pump 6, a proportional valve 7, and three solenoid valves 8. The PLC controller 5 is the core of the entire system; its signal input is electrically connected to a pressure sensor 9 to receive pressure data. Its signal output is electrically connected to the start / stop control of the booster pump 6, the opening control of the proportional valve 7, and the reversing control of the three solenoid valves 8, respectively, to output control commands. The air inlet of the booster pump 6 is connected to the main air passage 10 of the processing workshop, and its outlet is connected to a pneumatic main pipeline 11. This pneumatic main pipeline 11 then branches into three parallel pneumatic branch pipes, each with a solenoid valve 8 connected in series. The outlets of these three solenoid valves 8 are respectively connected to the air inlet of the vacuum generator of the gantry robot unit 2, the air inlet of the riveting cylinder of the stud unit 3, and the air inlet of the pusher cylinder of the rod insertion unit 4, to control the air flow of each unit. On the pneumatic branch pipe connected to the riveting unit 3, a proportional valve 7 is connected in series after the solenoid valve 8 to precisely adjust the gas pressure leading to the riveting cylinder.

[0011] The PLC controller 5 has a built-in logic processing module and control algorithm. It can analyze and judge the real-time pressure data received from the pressure sensor 9, and output corresponding control signals to control the start and stop of the booster pump 6, the on / off switching of each solenoid valve 8, and the precise opening of the proportional valve 7, thereby achieving differentiated pressure compensation for the three main actuators. The pressure sensor 9 continuously monitors the main air circuit pressure and feeds it back to the PLC controller 5. The PLC controller 5 processes the pressure signals according to preset logic and algorithms. When the pressure is detected to be lower than the set value, the PLC controller 5 starts the booster pump 6 to increase the pressure, and by controlling the on / off switching of the corresponding solenoid valves 8, prioritizes supplying stable high-pressure gas to the gantry robot unit 2, which is most sensitive to pressure, ensuring that its suction cup can generate sufficient vacuum to stably adsorb the nickel starting electrode.

[0012] When a pressure fluctuation exceeding the allowable range is detected, the PLC controller 5 dynamically compensates for the pressure of the riveting cylinder in the lug unit 3 by adjusting the opening of the proportional valve 7 to ensure stable riveting force. Simultaneously, it extends the operating cycle of the pusher cylinder in the rod-threading unit 4 to ensure the pusher action can still be completed under pressure fluctuations. Once the pressure stabilizes, the system automatically switches back to normal operation mode. The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pneumatic voltage stabilization control system for a nickel starting electrode processing unit, comprising a gantry robot unit (2), a nail lug unit (3), and a rod threading unit (4) installed in a processing workshop (1), characterized in that: It also includes a monitoring layer and a control layer; The control layer includes a PLC controller (5), a booster pump (6), a proportional valve (7), and a solenoid valve (8); The monitoring layer is a pressure sensor (9), which is installed at the inlet of the main air passage (10) in the processing workshop. Its signal output terminal is electrically connected to the signal input terminal of the PLC controller (5). The signal output terminal of the PLC controller (5) is electrically connected to the start / stop control terminal of the booster pump (6), the opening control terminal of the proportional valve (7), and the reversing control terminal of the solenoid valve (8), respectively. The air inlet of the booster pump (6) is connected to the main air circuit (10) of the processing workshop, and the air outlet is connected to the pneumatic main pipeline (11). The pneumatic main pipeline (11) is divided into three branch pipes, each connected to a solenoid valve (8). The air outlets of the three solenoid valves (8) are respectively connected to the air inlet of the vacuum generator of the truss manipulator unit (2), the air inlet of the riveting cylinder of the nail ear unit (3), and the air inlet of the push rod cylinder of the rod insertion unit (4). The proportional valve (7) is connected in series with the pneumatic branch pipe corresponding to the nail unit (3), and its control end is electrically connected to the output end of the PLC controller (5).

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