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US 7,741,836 B2Granted
Test tray transferring apparatus for a test handler, test handler, and method of transferring test trays for a test handler
AssigneeTechwing Co., Ltd.
InventorsYun Sung Na, In Gu Jeon, Tae Hung Ku, Dong-Hyun Yo, Doo-Woo Kim
Life of this patent
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Abstract
A test handler is disclosed. First and second gripping blocks for respective front and rear test trays to be transferred along a circulation path move together in a circulation direction, but move independently in a direction perpendicular to the circulation path and grip and release independently. The test trays can be transferred by a single power source and interference between an assisting a test and a transferring can be minimized.
Claims7
A test tray transferring apparatus for a test handler comprising:
- a first gripping block provided to move in a circulation direction of a predetermined circulation path while gripping or releasing a front test tray of two test trays to be circulated along the predetermined circulation path;
- a second gripping block spaced apart from the first gripping block and provided to move in the circulation direction of the predetermined circulation path while gripping or releasing a rear test tray of the two test trays;
- a gripping block actuating device for actuating the first gripping block and the second gripping block to grip and release the two test trays;
- a gripping block transferring device for transferring the first gripping block and the second gripping block together along the circulation path;
- and
- a vertical transferring device for transferring the first gripping block and the second gripping block in a direction perpendicular to the predetermined circulation path;
- wherein the vertical transferring device includes:
- a first vertical transfer for transferring the first gripping block in the direction perpendicular to the predetermined circulation path, and
- a second vertical transfer for transferring the second gripping block in the direction perpendicular to the predetermined circulation path independently from the first vertical transfer.
6 more elements
A method of transferring test trays for a test handler comprising:
- (a) gripping the test trays respectively by a first gripping block and a second gripping block;
- (b) transferring the respective test trays in a circulation direction by moving the first gripping block and the second gripping block in the circulation direction together;
- (c) releasing the test tray by the first gripping block;
- (d) transferring the test tray gripped by the second gripping block in the circulation direction by moving the first gripping block and the second gripping block in the circulation direction together;
- (e) releasing the test tray by the second gripping block;
- and
- (f) moving the first gripping block and the second gripping block in a direction reverse to the circulation direction together;
- wherein the step (c) comprises:
- moving the first gripping block backward, and
- elevating the first gripping block;
- and
- wherein the step (e) comprises:
- moving the second gripping block backward, and
- elevating the second gripping block.
11 more elements
A method of transferring test trays for a test handler comprising:
- (a) releasing a test tray by a first gripping block and griping a test tray by a second gripping block;
- (b) transferring the test tray gripped by the second gripping block in a circulation direction by moving the first gripping block and the second gripping block in the circulation direction together;
- (c) releasing the test tray by the second gripping block;
- (d) moving the first gripping block and the second gripping block in a direction reverse to the circulation direction together;
- (e) gripping the test trays respectively by the first gripping block and the second gripping block;
- and
- (f) transferring the respective test trays in the circulation direction by moving the first gripping block and the second gripping block in the circulation direction together;
- wherein the step (a) comprises:
- moving the first gripping block backward, and
- elevating the first gripping block;
- and
- wherein the step (c) comprises:
- moving the second gripping block backward, and
- elevating the second gripping block.
11 more elements
Dependencies are inferred from the claim text.