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Apparatus for forming tampon inserter tip
| Details |
Inventors: Takahashi, Hiroshi; Muto, Yasutami; Okino, Toru;
Assignee: Lion Corporation (Tokyo, JP)
Primary Examiner: Chiesa; Richard L.
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Fisher, Spivak, McClelland & Maier
An apparatus for continuously and rapidly forming petal-like segments at the tip of a tampon inserter into a hemispherically curved shape. Sets of molds are mounted on a support table on a rotary table turned about a shaft. Each set comprises a heating mold to heat and soften the tip of the tampon inserter and a cooling mold to shape while being cooled the heated and softened tip. The heating and cooling molds are moved by a cam so that either of the two molds is placed above the tampon inserter held in position by a gripper. The gripper comprises a pair of gripper segments that are opened and closed by a cam on the shaft and raised and lowered by another cam on the same shaft. The cams are adapted to release the tampon inserter from the gripper after the tampon inserter has been put first in the heating mold and then in the cooling mold. The tip of the tampon inserter held by the gripper first enters the heating mold to get heated. While the heated tip descends temporarily, the cooling mold is brought to above the tampon inserter. As the tampon inserter rises again, its tip comes in contact with the inner surface of the cooling mold, in which the tip is formed into a hemispherically curved shape while being cooled. |
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DETAILED DESCRIPTION An object of this invention is to provide a practical apparatus for continuously and rapidly accomplishing the aforementioned operation to form the petal-like segments at the tip of a tampon inserter into a hemispherically curved shape.
Another object of this invention is to provide an apparatus for fully automatically and efficiently forming the petal-like segments at the tip of a tampon inserter into a hemispherically curved shape.
In order to achieve the above objects, a tampon inserter tip forming apparatus according to this invention has a rotary table that is turned about a shaft by a drive unit, with sets of molds, each of which comprises a heating mold in which the tip of the tampon inserter is heated and softened and a cooling mold in which the heated and softened tip is shaped while being cooled, disposed around the periphery of the rotary table.
A cam mechanism is provided on the shaft so that either of the heating and cooling molds is positioned, at one or the other end of a guide, above a tampon inserter held by a gripper.
One tampon inserter gripper is provided for each mold unit on the rotary table.
The tampon inserter gripper comprises a pair of gripper segments that are opened and closed by another cam mechanism and raised and lowered by still another cam mechanism provided on the shaft.
The cam mechanisms are so arranged that the gripper releases the tampon inserter which has been put first in the heating mold and then in the cooling mold.
When the drive unit turns the rotary table of this forming apparatus, each of the cam mechanisms interlockingly moves the heating and cooling molds, opens and closes the gripper, and raises and lowers the gripper.
Accordingly, the tip of a tampon inserter held by the gripper first enters the heating mold.
While the heated tip is lowered temporarily, the cooling mold is moved to above the tampon inserter.
When the tampon inserter is raised again, the heated tip comes in contact with the inner surface of the cooling mold to become hemispherically shaped while being cooled
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