Automatic piston installation apparatus

An automatic piston installation apparatus comprising:

• a block positioning mechanism for positioning a cylinder block at a predetermined position by moving the cylinder block in vertical and horizontal directions;
• a piston positioning mechanism for positioning a piston by moving the piston so as to be inserted into the cylinder block positioned by the block positioning mechanism from above in the vertical direction;
• a piston inserting mechanism for inserting the piston positioned by the piston positioning mechanism into a cylinder bore from above in the vertical direction, wherein the piston inserting mechanism includes a piston guide unit for guiding the piston gripped by a piston gripping unit into a cylinder bore, a pushing unit for pushing the piston guided by the piston guide unit from above, and a connecting-rod guide unit for guiding the connecting rod of the piston pushed by the pushing unit while lowering the connecting rod;
• a cap positioning mechanism for positioning the connecting-rod cap by moving the connecting-rod cap so as to be fastened to the connecting rod of the piston inserted by the piston inserting mechanism from below in the vertical direction;
• and
• a fastening mechanism for fastening the connecting-rod cap from below in the vertical direction.

An automatic piston installation apparatus comprising:

• a block positioning mechanism for positioning a cylinder block at a predetermined position by moving the cylinder block in vertical and horizontal directions;
• a piston positioning mechanism for positioning a piston by moving the piston so as to be inserted into the cylinder block positioned by the block positioning mechanism from above in the vertical direction;
• a piston inserting mechanism for inserting the piston positioned by the piston positioning mechanism into a cylinder bore from above in the vertical direction;
• a cap positioning mechanism for positioning a connecting-rod cap by moving the connecting-rod cap so as to be fastened to a connecting rod of the piston inserted by the piston inserting mechanism from below in the vertical direction;
• and
• a fastening mechanism for fastening the connecting-rod cap from below in the vertical direction, wherein the fastening mechanism includes a fastening unit for holding the connecting-rod cap and exerting a fastening force on a fastening bolt, a fastening elevating unit for elevating the fastening unit, and a transferring unit for transferring the fastening unit and the fastening elevating unit in the horizontal direction and positioning these at a predetermined position in a working area.

An automatic piston installation apparatus comprising:

• a block positioning mechanism for positioning a cylinder block at a predetermined position by moving the cylinder block in vertical and horizontal directions or by rotating the cylinder block around a crankshaft, wherein the block positioning mechanism includes:
• a block elevating unit for separating the cylinder block conveyed by a conveying line from the conveying line and holding the cylinder block,
• a block gripping unit for gripping the cylinder block held by the block elevating unit and rotating the cylinder block so as to direct a cylinder bore in the vertical direction,
• a shaft rotating unit, formed integrally with the block gripping unit, for rotating the crankshaft, and
• a block transferring unit for transferring the block gripping unit in the horizontal direction and positioning the block gripping unit at a predetermined position in a working area;
• a piston positioning mechanism for positioning a piston by moving the piston so as to be inserted into the cylinder block positioned by the block positioning mechanism from above in the vertical direction;
• a piston inserting mechanism for inserting the piston positioned by the piston positioning mechanism into a cylinder bore from above in the vertical direction;
• a cap positioning mechanism for positioning a connecting-rod cap by moving the connecting-rod cap so as to be fastened to a connecting rod of the piston inserted by the piston inserting mechanism from below in the vertical direction;
• a fastening mechanism for fastening the connecting-rod cap from below in the vertical direction;
• and
• an upper frame and a lower frame that are separated from each other in the vertical direction and are disposed in parallel, wherein the upper frame supports the block transferring unit and a transferring unit of both a piston gripping unit and a cap gripping unit, and the lower frame supports a transferring unit of the connecting-rod guide unit, a fastening unit, and a fastening elevating unit.