How to reduce the production error of the injection molding machine manipulator?

At present, many machinery manufacturers are choosing to use injection molding machine robots as the main production method, but using automated robots in production can improve product production efficiency and product quality, and greatly reduce product production costs. Whether the robot manipulator can work accurately is actually a three-dimensional positioning problem, which is a combination of several linear and angular positioning. As a BOPA PE Pipes Film Supplier, share with you.

In many simpler cases, a single magnitude may be dominant. The factors that affect the positioning error of a single line or angle are as follows:

1.Positioning method

Different positioning methods have different influence factors. For example, when positioning a mechanical stop, the positioning accuracy is related to the stiffness of the stop and the speed of the stop.

2.Positioning speed
                                                                   
                                                                                                                                                 BOPP film PE Core

The positioning speed has a great influence on the positioning accuracy. This is because when the positioning speed is different, the energy of the moving parts that must be dissipated is different. Generally, in order to reduce the positioning error, the positioning speed should be reasonably controlled, such as improving the buffering performance and buffering efficiency of the buffer device, and controlling the drive system to decelerate the moving parts in a timely manner. Our company has PP Black Plug on sale.

3.Accuracy

The manufacturing precision and installation speed regulation accuracy of the robot arm have a direct impact on the positioning accuracy.

4.Stiffness

When the structural rigidity and contact rigidity of the manipulator itself are low, the positioning accuracy is generally low due to easy vibration.

5.Weight of moving parts

The weight of the moving part includes the weight of the manipulator itself and the weight of the object being grasped. The change of the weight of the moving part has a great influence on the positioning accuracy. Generally, as the weight of a moving part increases, the positioning accuracy decreases. Therefore, when designing, we must not only reduce the weight of the moving parts themselves, but also consider the impact of changes in grasping weight during work.

6.Drive source

Pressure fluctuations of hydraulic pressure and air pressure, and fluctuations of voltage, oil temperature, and air temperature all affect the repeat positioning accuracy of the manipulator. Therefore, necessary voltage stabilization and oil temperature adjustment measures are adopted. For example, use an accumulator to stabilize the oil pressure, use a heater or cooler to control the oil temperature, and at low speeds, use a temperature and pressure-compensated flow control valve.

7.Control system

The position control accuracy of switch control, electro-hydraulic proportional control and servo control are different. This is not only because the accuracy and sensitivity of various control elements are different, but also related to the presence or absence of a position feedback device.

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