Abstract: A piston is axially and reciprocatably accommodated in a cylinder, and a piston rod, fixed to the piston, penetrates a rod cover to protrude to the outside. Negative pressure supply paths, connected between expansion-contraction chambers and operation ports, are provided with negative pressure check valves allowing flow of air toward the expansion-contraction chambers and blocking reverse flow thereto. Exhaust channels, communicating with the expansion-contraction chambers and the outside, are provided with exhaust check valves allowing flow from the expansion-contraction chambers to the outside and blocking reverse flow thereto. The respective negative pressure supply paths come to a vacuum state due to the reciprocating of the piston.

Abstract: An electronic component feeding apparatus comprises a feeding rotor having a recess for forming a parallel space with a plane orthogonal to the rotation axis. By oscillating a feeding rotor within a predetermined angular range, the apparatus takes the electronic components stored in bulk in a storeroom into the parallel space, and move the electronic components in the parallel space toward a feeding path each time the bottom of the parallel space tilts down toward the feeding path during an oscillation of the feeding rotor, and take the electronic components into the feeding path one by one, and allow the electronic component taken into the feeding path to move downward by gravity.

Abstract: An electronic component feeding apparatus comprises a feeding rotor having a recess for forming a parallel space with a plane orthogonal to the rotation axis. By oscillating a feeding rotor within a predetermined angular range, the apparatus takes the electronic components stored in bulk in a storeroom into the parallel space, and move the electronic components in the parallel space toward a feeding path each time the bottom of the parallel space tilts down toward the feeding path during an oscillation of the feeding rotor, and take the electronic components into the feeding path one by one, and allow the electronic component taken into the feeding path to move downward by gravity.

Abstract: An electronic component feeding apparatus comprises a feeding rotor having a recess for forming a parallel space with a plane orthogonal to the rotation axis. By oscillating a feeding rotor within a predetermined angular range, the apparatus takes the electronic components stored in bulk in a storeroom into the parallel space, and move the electronic components in the parallel space toward a feeding path each time the bottom of the parallel space tilts down toward the feeding path during an oscillation of the feeding rotor, and take the electronic components into the feeding path one by one, and allow the electronic component taken into the feeding path to move downward by gravity.

Abstract: An electronic component feeding apparatus which conveys electronic components in a ranging condition and feeds a foremost electronic component to a component taking-out position. This apparatus includes a component conveying passage, a shutter for opening and closing a component outlet port of the component passage, a component stopper including an air suction path which leads to the component outlet port, a shutter for opening and closing the component outlet port, an air suction unit having an air suction port, an air tube for communicating an air suction force from the air suction port to the air suction path, and a lever mechanism for operating the shutter and the air suction unit.

Abstract: An electronic component feeding apparatus which conveys electronic components in a ranging condition and feeds a foremost electronic component to a component taking-out position. This apparatus includes a component conveying passage, a shutter for opening and closing a component outlet port of the component passage, a component stopper including an air suction path which leads to the component outlet port, a shutter for opening and closing the component outlet port, an air suction unit having an air suction port, an air tube for communicating an air suction force from the air suction port to the air suction path, and a lever mechanism for operating the shutter and the air suction unit.

Abstract: An electronic component feeding apparatus comprises a feeding rotor having a recess for forming a parallel space with a plane orthogonal to the rotation axis. By oscillating a feeding rotor within a predetermined angular range, the apparatus takes the electronic components stored in bulk in a storeroom into the parallel space, and move the electronic components in the parallel space toward a feeding path each time the bottom of the parallel space tilts down toward the feeding path during an oscillation of the feeding rotor, and take the electronic components into the feeding path one by one, and allow the electronic component taken into the feeding path to move downward by gravity.

Abstract: A component supply apparatus includes a rectangular cross-sectional component passage which can house a plurality of chip components in a longitudinal direction, and at a first side surface of the tip of this component passage a rectangular-shaped component discharge opening is formed, and at a second side surface opposing the first side surface of the tip of the component passage a rectangular-shaped pusher insertion opening is formed. Inserting the pusher into the component passage through the pusher insertion opening enables a forefront electronic component to be pushed by the pusher and be discharged outside from the component discharge opening in a predetermined direction.