Two cylinder synchronization control problem, cylinder synchronization method

When it comes to cylinders, many friends may say that they are very unfamiliar, in fact, the work field of cylinders is relatively wide, and it is often seen in printing, semiconductors, automation control, robots and other areas. When air is in the engine cylinder, the force of expansion can convert thermal energy into mechanical energy.

The gas is compressed by the piston in the compressor and the pressure increases. So how do you get 2 cylinders to act synchronously? What are the types of cylinders? Let's take a closer look.

1. How to make 2 cylinders work synchronously.

Since the two cylinders themselves create frictional forces.

There's no way to be fully synchronized. It is recommended to use a solenoid valve to control a cylinder first, add a tee to the original intake and outlet areas, and introduce the air pipe into another cylinder, so that the cylinder can simply do synchronous action.

Second, what are the types of cylinders?

1. a cylinder. There is only one piston rod on one side, and air can be supplied from the side of the piston to generate air pressure, and then the piston can be pushed to generate thrust, and then it can be returned by a spring or its own weight.

2. Acting cylinder.

Air is supplied alternately from both positions of the piston, and the force is output simultaneously in one or both directions.

3. Diaphragm cylinder.

The diaphragm is used instead of the piston, and only one area is required to output the force, which is returned with a spring. Diaphragm cylinders have good sealing performance, but the disadvantage is that the stroke is short.

4. Impact cylinder.

As a new type of element. The pressure energy of the compressed gas can be converted into the kinetic energy of the piston movement.

5. Rodless cylinder.

There are two types of magnetic cylinders and cable cylinders, in which the output shaft does an oscillating motion with a swing angle of less than 280°. There are also rotary cylinders, gas-hydraulic damping cylinders and stepper cylinders, etc.

Try to avoid two, preferably one with a guide rod, really want two of your errors to absorb well is one of them, the second control of the solenoid valve to the two cylinders distance is the same and the closer the better, the control of the air circuit to the same way, so that the air pressure on the overloaded side will automatically feedback to the other side.

Share a solenoid valve, enter and exit with a tee, you can also use two solenoid valves, and the control lines of the two solenoid valves can be connected in parallel.

1. Two cylinders due to friction.

It is impossible to achieve complete synchronization;

2. Approximate synchronization can be considered when a normal solenoid valve controls a cylinder, a 3-way is added to the original intake and outlet positions, and the bleed air pipe is transferred to another cylinder.

The cylinder principle is derived from the cannon.

In 1680, the Dutch scientist Hoins, inspired by the principle of cannonballs, thought to himself, would it be good to use the power of cannonballs to propel other machinery? He began to use gunpowder as an incendiary substance, changing the shell into a "piston", the barrel as a "cylinder", and opening a one-way valve.

Gunpowder is injected into the cylinder, and when the gunpowder is ignited, the gunpowder burns violently, pushing the piston upwards and generating power. At the same time, the huge pressure of the first gas also pushes open the check valve and discharges the exhaust gas. Then, the residual exhaust gas in the cylinder gradually cools down, the air pressure becomes lower, and the atmospheric pressure outside the cylinder.

The piston is then pushed down in preparation for the next **.

Of course, due to the long trip and the low efficiency, he did not succeed in the end. However, it was Hoines who first proposed the idea of the "internal combustion engine", and on this basis, later generations invented the engine for automobiles.

With the further development of technology, polymer composite materials have gradually achieved successful applications in cylinder maintenance. Compared with traditional methods, polymer composite materials have excellent temperature resistance, good pressure resistance, and better sealing performance, and have good plasticity, will not solidify when heated, and the sealing film will not be destroyed, so as to ensure the sealing of the sealing surface of the parts;

In addition, it is easy to remove, and the used sealing surface can be used with absolute ethanol.

or acetone can be easily wiped off without adhering to the sealing surface; Due to its excellent performance, it is gradually favored by more and more cylinder companies. (Photo by Du Shifan) @2019

Summary. There are many solutions to the cylinder out of sync, and the following are a few common solutions:1

Check the cylinder system: The first thing you need to do is rule out any oil leaks, blockages, or damage within the system. Make sure there are no anomalies in the system that are causing the cylinders to be out of sync.

2.Recalibration: Using specialized equipment or tools, recalibrate the cylinder so that it can run in sync.

3.Adjust the hydraulic valve: If you find that the improper adjustment of the hydraulic valve causes the cylinder to be out of sync, you can adjust the pressure and flow of the hydraulic valve as needed to ensure that the action of the two cylinders is synchronized.

4.Replace critical components: If some parts within the cylinder are found to be damaged or worn, they may need to be replaced to address the out-of-sync issue.

5.Regular maintenance: Regular cleaning, lubrication and maintenance of the cylinder can prevent the cylinder from being out of sync due to dust, impurities or lack of lubrication.

The above are some common ways to solve the problem of cylinder out-of-sync, and the specific solution may vary depending on the actual situation. If you encounter problems, it is advisable to consult a professional or repair technician for more accurate guidance.

There are many solutions to the cylinder out of sync, and the following are a few common solutions:1Check the cylinder system:

The first step is to rule out if there are any oil leaks, blockages or damage within the system. Make sure there are no anomalies in the system that are causing the cylinders to be out of sync. Code Ming 2

Recalibration: Using specialized equipment or tools, recalibrate the cylinder so that it can run in sync. 3.

Adjust the hydraulic valve: If you find that the improper adjustment of the hydraulic valve causes the cylinder to be out of sync, you can adjust the pressure and flow of the hydraulic valve as needed to ensure that the action of the two cylinders is synchronized. 4.

Replace critical components: If some parts within the cylinder are found to be damaged or worn, they may need to be replaced to address the out-of-sync issue or key. Late group report 5

Regular maintenance: Regular cleaning, lubrication and maintenance of the cylinder can prevent the cylinder from being out of sync due to dust, impurities or lack of lubrication. The above are some common ways to solve the problem of cylinder out-of-sync, and the specific solution may vary depending on the actual situation.

If you encounter problems, it is advisable to consult a professional or repair technician for more accurate guidance.

You've done a great job! Can you elaborate on that?

The solutions to the asynchronous cylinder are: removing the abnormal situation in the system, recalibrating the cylinder, adjusting the hydraulic valve, replacing the damaged parts, and maintaining it regularly. The specific solution varies from case to case, and it is recommended that Lu Kongxing consult a professional.

Summary. There are several reasons why a run-out of sync may occur:

1. The deviation of the external load of the two cylinders, such as the different resistance and friction of the two cylinders, will lead to imbalance. Among them, the displacement of the cylinder with less resistance will be larger.

2. The difference in internal friction, such as the gap in the friction between the piston and the cylinder of each cylinder, between the piston rod and the seal, leads to the asynchronous of the cylinder.

3. The difference in the resistance of the hydraulic oil along the oil pipeline of the two cylinders leads to the asynchronous oil cylinder.

4. The deviation of the adjustment of the control element leads to the deviation of the flow rate is not synchronized, such as the use of an independent throttle valve for each oil cylinder, the difference in the flow rate of the inlet and outlet oil will affect the synchronization of the two cylinders.

5. The cylinder support point of the supported part has been deviated at the beginning, that is, the initial state is skewed.

6. After the cylinder is used for too long, there is internal leakage between the piston and the cylinder, resulting in the double cylinder being out of sync.

The solution can be solved from the cause of the occurrence, or it can be solved by using synchronous valves or mechanical rigid limits.

Why are the two hydraulic cylinders not synchronized! How can I sync?

There are several reasons for the non-synchronization of operation: 1. The deviation of the external load of the two cylinders, such as the different resistance and friction of the two cylinders, will lead to imbalance. Among them, the displacement of the cylinder with less resistance will be larger.

2. The difference in internal friction, such as the gap in the friction between the piston and the cylinder of each cylinder, between the piston rod and the seal, leads to the asynchronous of the cylinder. 3. The difference in the resistance of the hydraulic oil along the oil pipeline of the two cylinders leads to the asynchronous oil cylinder. 4. The deviation of the adjustment of the control element leads to the deviation of the flow rate is not synchronized, such as the use of an independent throttle valve for each oil cylinder, the difference in the flow rate of the inlet and outlet oil will affect the synchronization of the two cylinders.

5. The cylinder support point of the supported part has been deviated at the beginning, that is, the initial state is skewed. 6. After the cylinder is used for too long, there is internal leakage between the piston and the cylinder, resulting in the double cylinder being out of sync. The solution can be solved from the cause of the occurrence, or it can be solved by using synchronous valves or mechanical rigid limits.

How to fix synchronization issues.

1. The deviation of the external load of the two cylinders, such as the different resistance and friction of the two cylinders, will lead to imbalance. Among them, the displacement of the cylinder with less resistance will be larger. 2. The difference in internal friction, such as the gap in the friction between the piston and the cylinder of each cylinder, between the piston rod and the seal, leads to the asynchronous of the cylinder.

3. The difference in the resistance of the hydraulic oil along the oil pipeline of the two cylinders leads to the asynchronous oil cylinder. 4. The deviation of the adjustment of the control element leads to the deviation of the flow rate is not synchronized, such as the use of an independent throttle valve for each oil cylinder, the difference in the flow rate of the inlet and outlet oil will affect the synchronization of the two cylinders. 5. The cylinder support point of the supported part has been deviated at the beginning, that is, the initial state is skewed.

6. After the cylinder is used for too long, there is internal leakage between the piston and the cylinder, resulting in the double cylinder being out of sync. The solution can be solved from the cause of the occurrence, or it can be solved by using synchronous valves or mechanical rigid limits.

The following methods can be used to achieve parallel cylinder synchronization:

1. Rigid mechanical synchronization.

2. Use throttle valve or speed control valve to adjust synchronization in the circuit.

3. The two oil cylinders are synchronized by independent quantitative pump oil supply.

4. The synchronous motor is used in the circuit to realize the synchronization of the cylinder.

5. The position sensor is used to measure the stroke position and the cylinder is synchronized through the electrical system.

There are many synchronization methods, mainly depending on the use occasion and accuracy, if the accuracy is not high. Or if there is no danger of synchronization error, you can use the synchronous valve of shunt interception, if you consider stability, accuracy secondly, not too high, you can use synchronous cylinder, synchronous motor, series cylinder, if you want high precision only servo, but the servo is very delicate, not good to serve, but with our synchronous shunt can reach 10 times the accuracy of the synchronous motor, the program control is simple.

Synchronization requirements 100 10 can be used within 10 synchronous valves. A highly available proportional servo system is required.

The requirements are not high, and two throttle valves can be added.