The early printing pressure configuration device null in the sukuri - n

摘要

PURPOSE:To always set an initial squeegee pressure value constantly and to avoid an improper print by providing means for holding the initial printing pressure of a squeegee constant by securing the position of the squeegee when the lower end of the squeegee is brought into contact with a sheet to be printed through a screen. CONSTITUTION:When a motor 7 is rotated, an adjusting bolt 11 is rotated, and a nut 13 is moved down on the bolt 11, thereby moving down a squeegee 4. When a squeegee rubber 5 is brought into contact with a printing sheet through a screen plate 2, the squeegee 4 arrives at an initial printing pressure position, the squeegee 4 receives the pressure of the sheet from below, and the nut 13 is prevented from moving down. Then, as the motor 7 excessively rotates, the bolt 11, a case 10 move up, and a piston rod 27 moves up through a sensor dog 30 and a supporting member 29. When the light communication of an optical sensor 33 is interrupted as the dog 30 moves up, a blower motor 34 is rotated at a high speed, the flow rate of air flowing into a cylinder 26 is increased to enhance the pressure in the cylinder 26, thereby securing the position of a piston head 26a.