| 摘要 |
<p>PURPOSE:To make easy mounting and dismounting operation, by providing a planar nonresilient member having two hooks projected on each side, resilient members that will be compressed under pressure, and holders each having an opening through which the hook will be inserted. CONSTITUTION:A vacuum rubber 12 is attached to each surface of a planar ring 11 of a rigid material. Each of the four sides of the ring 11 is provided with two hooks 13. Each hook 13 is inserted into an opening 16 formed in each of holders 14. The holders 14 are attached by a bolt 15 to four outer vertical peripheral surfaces of a pressing plate 3 of a press. The holders 14 attached to the outer surfaces of the pressing plate 3 of the press always in the same number as that of he hooks 13. If a vacuum packing 4' is required, the packing 4' is inserted into the opening between two pressing plates 3, and then the hooks 13 are inserted into the respective openings 16 of the holders 14 to complete the mounting.</p> |
