What should you pay attention to when purchasing a rally machine?

First, the test material tensile range
The difference in the range of tension determines the difference between the sensors used and the structure of the tension machine, but this has little effect on the price (except for the door type). For general flexible packaging manufacturers, a pull range of 100N is sufficient. Therefore, it is also decided to use a single arm type.
Corresponding to the single-arm type is a gantry structure, which is adapted to a relatively large pulling force, such as one ton or more. Therefore, soft packaging manufacturers basically do not need.
Second, the test trip problem
According to the performance and requirements of the flexible packaging film, the stroke can be 600-1500mm. For materials with an elongation of more than 1000%, a tensile machine with a stroke of 1000 or 1200 mm can be used.
Third, the standard configuration problem
The three basic configurations of intelligent: host, microcomputer, and printer, if the microcomputer is powerful, you can print directly. It can also be equipped with a regular computer. With a computer, you can perform complex data analysis, such as data editing, partial magnification, adjustable report formats, and statistical analysis of groups.
If equipped with a computer, the manufacturer should give the corresponding control system.
Fourth, the output
The test result output can be arbitrarily set: zui gravity value, elongation rate, tensile strength, constant force elongation, constant elongation force value, yield strength, elastic modulus, and large test force of Zui. This can be said to be a comprehensive result of the output of the microcomputer when the microcomputer is operated. Some manufacturers in foreign countries can generally output these 8 items. Some domestic manufacturers can output 5-6 items, and some manufacturers can only output zui value, average value, and zui small value.
5. On the experimental project
Flexible packaging requires a multi-purpose tensile machine, that is, on the basis of different fixtures, it can be used for stretching, compression, bending, tearing, shearing, 180 degree peeling, and 90 degree peeling test.
There are some high-end tensile machines on the market. In addition to the above items, the friction coefficient can also be tested due to the high precision of the sensors (some of which reach 250,000).
Sixth, the main configuration of product machinery
Transmission, screw drive and rack drive, the former is expensive, high precision, high test repeatability; the latter is cheap, low precision, low test repeatability.
The lead screw has a decisive effect on the measurement of the pull force accuracy. Generally there are ball screws, trapezoidal screws, and general screw. Among them, the accuracy of the ball screw is high, but its performance depends on the operation of the computer servo system, and the whole set price is relatively expensive; the precision of the flexible package can be achieved by using the general screw and the lead screw. -1% accuracy.
Sensors, the main cost lies in the life, photoelectric induction is one of the more advanced technology, generally more than 100,000 times.
Seven, test speed
Some of the market rally machines are in the range of 10~500mm/min, and some are in the range of 0.001~500mm/min. The former generally uses the ordinary speed control system, the cost is lower, the roughness affects the accuracy; the latter uses the servo system, which is expensive and has high precision. For flexible packaging enterprises, the servo system is selected, and the speed range of 1~500mm/min is sufficient, so that the accuracy is not affected and the price is within a reasonable range.
Eight, measurement accuracy
Accuracy issues, including force measurement accuracy, speed accuracy, deformation accuracy, and displacement accuracy. These precision values ​​zui can be up to plus or minus 0.5. But for the average manufacturer, a tensile machine with a precision of 1% is sufficient.
Yangzhou Xintianhui Electronic Technology Co., Ltd. is specialized in producing rally machine series, rubber testing equipment series and plastic testing equipment. If you are interested in our company's products, you are welcome.

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