Working principle of heavy stapler

The working principle of the heavy-duty stapler is that when the end cap of the heavy-duty stapler is pressed forcefully by the hand, the jack, the needle and the clamp will rotate around the connecting pin. With the continuous application of human hands, the jack will rotate out of its natural state. At this time, the jack will move up and down around the connecting pin that is slightly higher than the height of a needle, the end cover spring will be compressed, and the shrapnel will be compressed, driving the needle to move down. After the needle moves a certain distance, under the action of human force, it will touch the bound object and pass through the object. After the binding is completed, people remove the force on the needle end cap. At this time, the shrapnel will rebound. The needle, clamp, jack and end cap will rebound under the action of the elastic force, and then the jack and end cap will rebound again due to the rebound of the end cap spring. , The jack will be separated from the fixture; the expansion of the pushing spring causes the needle to feed again, thus restoring the heavy stapler to the initial state and waiting for re-binding