The telescopic work process of the ballpoint pen is divided into eight steps in total. Steps 1 to 4 are the process of extending the refill, and steps 5 to 8 are the process of retracting the refill.
When we press the top of the ballpoint pen with our fingers, we apply a downward pressure to the ejector rod, and the ejector rod moves along the chute to force the turntable to move downward.
A radial force is generated at the contact point between the sign and the inclined surface of the turntable to force the turntable to rotate, and the refill extends.
When the ejector rod is pressed again, the pointed feature of the ejector rod head is separated from the inclined surface of the turntable, the turntable is rotated by radial force, the engagement of the turntable and the chute coincides, and the refill is retracted.
The nib and ink are the keys to a ballpoint pen, where the nib is divided into a ball on the nib and a ball seat body. At present, tungsten carbide balls are the most widely used at home and abroad, and my country already has a good foundation, which can not only satisfy the
To meet domestic production needs, but also a large number for export.