| 摘要 |
In a vacuum suction holder comprising a suction housing having a base opening, a suction membrane extending across the base opening, a membrane operating mechanism including a shaft connected to the suction membrane and being movable together with the suction membrane between a release position in which the suction membrane extends flatly across the base opening and an operating position in which the suction membrane is pulled into the suction housing, the operating mechanism includes means for firmly forcing the suction membrane into the release position in which it extends flat across the suction housing base opening.
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