More applied in the automatic production line, automatic bottle blowing machine, remove, robots and other automated machinery, instead of artificial hand clip functions, is the key part of modern mechanical hand.
The characteristics of the automatic bottle blowing machine pneumatic clamping jaw:
1. All of the structure are double function, can realize two-way fetching.To automatically, high repeat precision.
2. Grab a constant torque.
The following image:
1, 2, 3 roller, hyperbolic bean ring channel 4, trunnion, circular groove (3) of article 5 6 7 ring groove 8, crank driving wheel
A, parallel grip
As shown in figure (a), parallel grip fingers is through two piston movement, each piston by a roller and a hyperbolic bean and qigong fingers are linked together, forming a special drive unit.In this way, moving the fingers of the qigong always axial central, cannot separate each finger is moving.If the fingers move backward, the previous compression state of piston in the exhaust, and the other a piston in a state of compression.
As shown in figure (e) animation parallel grip is driven by a single piston, axis drives the crank, two claw pieces on each have a relatively crank groove.To reduce resistance, claw discs connected with ontology to the steel ball slide rail structure.
Second, Y grip
As shown in figure (b) Y grip on the piston rod of a ring groove, because the fingers are connected to the ring groove trunnion, and thus fingers can move at the same time and in the center of, and ensure the scraping of the moment is always constant.
Three, rotating grip
As shown in figure (c) rotating clamping jaw movement is working according to the meshing principle of rack, piston and the fixed one can move up and down together, the end of the shaft has three ring groove, the groove and the meshing of two driving wheels.Therefore, pneumatic fingers can move at the same time and automatically to the principle of gear and rack to ensure the strength of fetching is always constant.
Four, three grip
As shown in figure (d) three grip on the piston of a circular groove, each of the crank is connected with a finger qigong, the piston movement immediately three crank movement, thus can control three fingers colleagues open and closed. 
