Film tearing machine and tension buffering mechanism thereof

The utility model relates to a film tearing machine and a tension buffering mechanism thereof, the tension buffering mechanism is connected to a machine body of the film tearing machine in a matched mode, and the tension buffering mechanism comprises a sliding seat connected to the machine body in a matched mode; the gravity guide wheels are connected to the sliding seats in a sliding fit mode and abut against gear holes in the two sides of the top face of the composite film; wherein the gravity guide wheel can drive the composite film to slide down relative to the sliding seat under the action of the gravity of the gravity guide wheel, and the gravity guide wheel is supported on the composite film before sliding down. According to the film tearing machine and the tension buffering mechanism thereof, the loss of a composite film can be reduced, and personnel operation is simpler. 本实用新型涉及一种撕膜机及其张力缓冲机构，张力缓冲机构配接于撕膜机的机体上，张力缓冲机构包括：滑座，配接于机体上；以及重力导轮，滑动配接于滑座，并与复合膜顶面两侧的齿轮孔抵接；其中，重力导轮能够在自身重力的作用下带动复合膜相对滑座下滑，且重力导轮在下滑之前承托于