| 摘要 |
PURPOSE:To enable a back plate to be detached in a very simple operation with respect to a master frame. CONSTITUTION:The mechanism is made by housing a bottomed cylinder 42 supported repulsively slidably by a spring 41 within a housing chamber 11 bored on the rear surface of a master frame 1 that supports a mold, and a slidable cylinder 44 repulsively supported with a spring 43 within the bottomed cylinder 42, and fixing a cylindrical plug body 45 provided with a tip cylinder 44 being internally tangential with the bottomed cylinder 42 in the opening of the housing chamber 11 in order to make the sphere receiving bore 47 provided in the tip cylinder 46 retain engaging spheres 48. Further, on a back plate 2 mounted on the rear surface of the master frame 1, a pin insertion hole 21 corresponding to the cylindrical hole of the cylindrical plug body 45 is provided for permitting the insertion of an engaging pin 3 having a communication hole 32 for inserting an operation rod in its central part in the range of from the pin insertion hole 21 to the cylindrical hole of the cylindrical plug body 45, and the engaging spheres 48 are fitted in an annular recession part 33 formed on the outer wall surface. |
