Stenter's Chain

  • Stenter's chain length accuracy should be measured according to the following requirements:

    1. The chain is cleaned before measurement
    2. Wrap the chain to be tested on two sprockets, and the upper and lower sides of the chain to be tested should be supported
    3. The chain before the measurement should stay for 1 min under the state of applying one-third of the minimum ultimate tensile load
    4. When measuring, apply the specified measuring load on the chain to make the upper and lower chains tensioned, and the chain and the sprocket should ensure normal meshing
    5. Measure the center distance between two sprockets

    Measuring chain elongation:

    1. In order to remove the clearance of the entire chain, it is necessary to measure under a certain degree of pulling tension on the chain
    2. When measuring, in order to minimize the error, measure at 6-10 knots
    3. Measure the inner L1 and outer L2 dimensions between the rollers of the number of pitches to obtain the judgment dimension L=(L1+L2)/2
    4. Calculate the elongation length of the chain. This value is compared with the use limit value of the chain elongation in the previous item.

    Chain structure: It is composed of inner chain links and outer chain links. It is composed of five small parts: inner chain plate, outer chain plate, pin, sleeve and roller. The quality of the chain depends on the pin and sleeve.

    Precautions

    For cars with rear derailleur, switch the chain to the state of small wheel to small wheel before hitting the chain, so that the chain is loose and easy to operate, and it is not easy to "bounce" after being cut.

    After the chain is cleaned and refueled, slowly turn the chainring upside down, and the chain links coming out of the back dial should be able to be straightened. If some chain links still maintain a certain angle, it means that it is not moving smoothly and is a dead knot Adjustment. It is found that the damaged chain link must be replaced in time. It is recommended to strictly distinguish the three types of pins and use the connecting pin for the maintenance of the chain.

    The chain driver of the Flat Screen Printing Machine should be flat and straight, so that it is not easy to twist the thimble. Careful use of tools can not only protect the tools, but also achieve good results. Otherwise, the tools are easily damaged, and the damaged tools are more likely to damage the parts. That is a vicious circle.