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US 7,124,616 B2Granted
Work transfer method for transfer press and work transfer apparatus for transfer press or press
AssigneeKomatsu Ltd.
InventorKiichirou Kawamoto
Life of this patent
Estimating the term…
Abstract
A work transfer apparatus for a transfer press or a press, with which an optimal die can be designed for each process, is provided. For this purpose, the work transfer apparatus for a transfer press includes at least a pair of lift beams (13), carriers (15) movable along a longitudinal direction of the lift beam, paired sub-carriers (50) movable in a carrier moving direction, power transmission means (51, 54) for transmitting carrier driving force to the sub-carriers, and a cross bar (17) which is laterally spanned between the sub-carriers and provided with work holding means (18) capable of holding a work.
Claims17
A work transfer method for a transfer press, comprising:
- moving a pair of lift beams up and down, wherein the pair of lift beams are parallel to a work transfer direction;
- reciprocatingly moving a cross bar based on a predetermined feed motion, wherein the cross bar is laterally spanned between a pair of carriers provided at the pair of lift beams to oppose each other, and wherein the cross bar is provided with a work holding unit for holding a work;
- providing a carrier driving force directly to the carriers to move each carrier of the pair of carriers in a same moving direction along a longitudinal direction of the pair of lift beams;
- and
- utilizing the movement of the pair of carriers to drive the cross bar to move to an offset position with respect to a moved position of the pair of carriers in a same direction as the direction of the movement of each of the pair of carriers.
2 more elements
A work transfer apparatus for a transfer press, comprising:
- at least one pair of lift beams which are provided in parallel with a work transfer direction and which are movable up and down;
- at least one pair of carriers which are provided at each of the at least one pair of lift beams, and which are movable along a longitudinal direction of the at least one pair of lift beams;
- a pair of guides provided on at least one of the at least one pair of carriers;
- a pair of sub-carriers which are provided on the pair of carriers along the pair of guides, and which are movable in a carrier moving direction;
- a driving source to provide a carrier driving force directly to the carriers to move the carriers along the longitudinal direction of the at least one pair of lift beams;
- a power transmission unit which transmits the carrier driving force to the pair of sub-carriers;
- and
- a cross bar which is laterally spanned between each pair of sub-carriers, and which is provided with a work holding unit for holding a work;
- wherein the carrier driving force is transmitted to the sub-carriers to move the cross bar and each of the sub-carriers to an offset position with respect to a moved position of the pair of carriers in a same direction as the moving direction of each carrier of the pair of carriers.
6 more elements
A work transfer apparatus for a transfer press, comprising:
- at least one pair of lift beams provided in parallel with a work transfer direction to be movable up and down;
- at least one pair of carriers which are provided at each of the at least one pair of lift beams, and which are driven by a linear motor to be movable along a longitudinal direction of the pair of lift beams:
- a pair of guides provided on at least one of the at least one pair of carriers;
- a pair of sub-carriers which are provided on the pair of carriers along the pair of guides, and which are movable in a carrier moving direction;
- a driving source to provide a carrier driving force directly to the carriers to move the carriers alone the longitudinal direction of the at least one pair of lift beams;
- a power transmission unit which transmits the carrier driving force to the pair of sub-carriers;
- and
- a cross bar which is laterally spanned between the pair of sub-carriers, and which is provided with a work holding unit for holding a work;
- wherein the carrier driving force is transmitted to the sub-carriers to move the cross bar and each of the sub-carriers to an offset position with respect to a moved position of the pair of carriers in a same direction as the moving direction of each carrier of the pair of carriers.
6 more elements
A work transfer apparatus for a press for transferring a work within the press or between presses, comprising:
- at least one pair of lift beams which are provided in parallel with a work transfer direction and movable up and down, and which include a first lift beam provided on a left side of the work transfer direction and a second lift beam provided on a right side of the work transfer direction;
- at least one pair of carriers which are provided at each pair of the at least one pair of lift beams, and which are movable along a longitudinal direction of the lift beams;
- a pair of guides provided on at least one of the at least one pair of carriers;
- a pair of sub-carriers which are provided along the pair of guides, and which are movable in a carrier moving direction;
- and
- a cross bar which is laterally spanned between the pair of sub-carriers, and which is provided with a work holding unit for holding a work;
- wherein the pair of guides, which guide the pair of sub-carriers, protrude from end portions of the pair of lift beams in the carrier moving direction, when the pair of carriers provided with the sub-carriers are moved up to substantially the end portions of the pair of lift beans in the longitudinal direction of the lift beams.
4 more elements
Dependencies are inferred from the claim text.