| 摘要 |
A device for filling PET bottles employs a cam driven vertically movable carriage mounted on the outside of the liquid storage tank adjacent each filler valve inside of the tank. A bracket mounted to the lower end of each carriage has a flat plate extending horizontally under a filler valve. A bottle gripper, having an open side slot for engaging under the collar near the mouth of a PET bottle, is suspended on two bolts which extend slidably through the flat plate. Normally uncompressed springs are interposed between the heads of the bolts and the top of the plate to hold the gripper against the bottom of the flat plate. A cam lifts the carriage after the gripper engages a bottle under its collar to initiate a seal between the bottle mouth and filler valve and as the carriage continues upward by a small amount for latching to the tank. The springs are compressed and a gap forms between the flat plate and the gripper. The plate compresses the spring which generates the force to increase the sealing force. The carriage latching is frictional and is not maintained to suspend a bottle unless the carriage is loaded gravitationally by the weight of a bottle.
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