How to regulate QGB cylinder buffering effect?

How to regulate QGB cylinder buffering effect? To the buffering effect of QGB cylinder should be how to adjust? When adjusting to what considerations? Buffer QGB cylinder for cylinder near high speed when the journey ends, don't take the necessary measures, the piston will be a lot of ( Energy) Hit the end cover, causing vibration and damaged parts. In order to make the piston movement in the end of the journey smoothly, no impact phenomenon. Adjust the size of the throttle valve opening, can control the amount of displacement, which determines the compressed volume ( Said the buffer room) The size of the internal pressure, to adjust the buffering effect. If the piston reverse movement, from the input compressed air porosity, can be directly open check valve, driving the piston movement to the left. Such as the opening of the throttle valve is fixed, not adjust, called an adjustable cushion cylinder. Buffer cylinder for cylinder near high speed when the journey ends, don't take the necessary measures, the piston will be a lot of ( Energy) Hit the end cover, causing vibration and damaged parts. In order to make the piston movement in the end of the journey smoothly, no impact phenomenon. On both ends of QGB cylinder adding buffer device, commonly known as buffer cylinder. When the piston driven by compressed air movement to the right, the right cylinder chamber by the plunger gas hole and porosity on the cylinder head. , in the end of the piston movement is close to travel on the right side of the buffer will plunger plunger piston hole closed, the piston continues to exercise, to the right in QGB Ⅱ cylinder right intracavitary residual gas is compressed, slowly through the throttle valve and the porosity, pressure produced by the compressed gas can if the movement of the piston and total energy balance, will obtain the buffer effect, single cylinder double acting type spot welder welding head, including the plate, cylinder, electrode holder, electrode belt, combined with electrode holder is set in the electrode on the electrode displacement and pressure device, pressure displacement device made up of guide bar slider and gear rack mechanism, guide bar slider mechanism has also been set up including fine-tuning positioning screw and nut displacement control device, the invention can accurately locate the distance between the electrodes, can reach to synchronously driven by two electrodes at the same time, the same two electrode pressure, displacement distance is the same, through the PLC and the valve control, precise control of process under low cost implementation resistance spot welder welding double electrodes of the precise displacement and adjustable clamping force, coupling of resistance welding variable provide a cost-effective welding head device, so that the welding quality is stable and no deformation of workpiece, the present invention has simple structure, component processing of low cost, ease of operation. Adjust QGB cylinder buffer effect is to tell one by one in order, then the notice in the process of adjustment is inevitable.