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Details
Inventors: Harada, Saburo; Fujinaka, Tatsuo;
Assignee: Mazda Motor Corporation (Hiroshima, JP)
Primary Examiner: Ramsey; Kenneth J.
Assistant Examiner:
Attorney, Agent or Firm: Burns, Doane, Swecker & Mathis

A transporting and positioning method and an apparatus therefore utilizable in an assembly line. A first member is positioned at a first predetermined position while a second member to be connected together with the first member is positioned and held at a second predetermined position. The second member is then transported to a third predetermined position defined immediately above the first predetermined position. The second member so transported to the third connected together by, for example, spot-welding effected to the outer peripheral edges of the first and second members overlapping with each other.

DETAILED DESCRIPTION The present invention has been devised with a view to substantially eliminating the problem inherent in the prior art method discussed above and has for its essential object to provide an assembly line conveyance effective to substantially eliminate any possible deviation in position between the inner and outer panels and also to improve the assembling efficiency.
In order to accomplish the above described object of the present invention, a method herein disclosed comprises a step of positioning a first member at a first predetermined position by means of a first positioning means; a step of positioning and holding a second member at a second predetermined position by means of a holding means of a handling means of a manipulator used to transport the second member; a step of transporting by means of the manipulator the second member from the second predetermined position towards a third predetermined position defined above the first predetermined position at which the first member is positioned; a step of positioning and clamping the handling means of the manipulator which has been moved to the third predetermined position; and a step of unchucking the handling means, which has been clamped at the third predetermined position, from the manipulator and lowering by means of a lifting means the handling means then holding the positioned second member to connect the first and second members together in overlapping fashion while having been positioned relative to each other.
The transporting and positioning apparatus capable of executing the above described method according to the present invention comprises a first positioning means for positioning a first member at a predetermined position; a manipulator for transporting a handling means, then holding a second member, to a location above the first member; said first positioning means including a plurality of lifting means each having a lifting member; a holding means provided in the respective lifting member for holding the handling means above the first member; and a synchronizing means provided in each of the lifting means for moving the lifting members simultaneously and over an equal distance


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