JPS63120774U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show one embodiment of the air vise according to the present invention. Figure 1 shows details of the vise cylinder, and the upper half of the inside of the cylinder tube shows the state before the piston is urged forward by compressed air. Half is a cross-sectional view showing the state where the piston is pushed forward to the maximum, Figure 2 is an exploded perspective view showing details of the multiple piston structure, and Figure 3 is a base fixed to a fixed base using fluid pressure. A cross-sectional view showing the structure for
FIG. 4 is a plan view of the air vise, and FIG. 5 is a bottom view of the air vise. 1...Fixed base, 2...Base, 3...Fixed clamp, 4...Movable clamp, 5...Lead screw shaft, 6...Vise cylinder, 7...Cylinder tube, 10...Threaded tube Body, 11...Keyway, 12
... Key, 15 ... Cylindrical partition member, 15A ... Axial hole, 15B ... Partition wall, 15C ... Peripheral wall, 15
G... Chamfered portion, 17... Head cover, 20...
...Piston, 20A...Boss part, 20B...Flange part, 20C...Axis hole, 21 and 22...Piston chamber, 23...Head piston, 26...Vent hole, 31...Air flow path, 32 ...Check valve, 3
3...Exhaust valve, 50...Operation ring, 60...Bottom casing, 63...Diaphragm, 64...
…Top casing, 65…Pressure disc, 6
6... disc spring, 67... push rod, 70...
...Sliding groove, 71...Lock plate, 80...Switching valve, 82...Operation lever, 84...Protector.

Claims (1)

[Scope of utility model registration request] The lead screw shaft is fixed to a movable clamp that can move toward and away from a fixed clamp that is fixed to the base, and a cylinder tube that can accommodate the coaxial can be rotated concentrically with the lead screw shaft. A threaded cylindrical body that is provided on the base and that is threadedly fitted to the outer circumference of the lead screw shaft is disposed inside the cylinder tube so as to be able to rotate integrally with the cylinder tube and to be slidable in the axial direction of the cylinder tube. A cylinder tube is formed by sequentially overlapping a plurality of cylindrical partition members for forming a piston chamber having an axial hole in the inner part of the threaded cylindrical body in the axial direction and mutually restricting their movement in the axial direction. A plurality of pistons, which fit into the inner circumferential surface of the lead screw shaft and fit into the inner circumferential surface in one-to-one correspondence with the respective partition members, are inserted into the lead screw shaft and stacked one on top of the other in the axial direction. The pipes are arranged so as to be able to be displaced in the direction and press the end face of the threaded cylinder, and a conduit passage for supplying air to each of the piston chambers via the head cover of the cylinder tube is partitioned from the inner circumferential surface of the cylinder tube. A check valve is formed between the piston and the outer circumferential surface of the member, and the head cover includes a check valve and an exhaust valve that selectively communicates the air flow path between the check valve and each piston chamber with atmospheric pressure. Air vise equipped with.