Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1996-06-14
1998-09-01
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
2643281, 36447505, 425150, 425593, 4254516, 425136, B29C 4577, B29C 4580
Patent
active
058007504
ABSTRACT:
A method and apparatus for mold protection of motor-driven clamping unit is provided. The method and apparatus is based on high response characteristics of the motor and a new control method. A continuously variable restrictive motor output scheme is used in conjunction with the mechanics characteristics of the toggle mechanism to maintain a substantially constant mold protective force at all positions. Further, the mold protective force can be adaptively adjusted with respect to different types of molds and motional conditions so that the mold can be adequately protected whenever abnormal condition occurs during mold closing action. The motor output will thus not unduly increased to a great level that would damage the mold, the machine, or even the operators. The drawbacks of the prior art are thus eliminated.
REFERENCES:
patent: 4540359 (1985-09-01), Yamazaki
patent: 4710119 (1987-12-01), Otake
patent: 4847779 (1989-07-01), Masao et al.
patent: 4849678 (1989-07-01), Kamiguchi et al.
patent: 5045253 (1991-09-01), Kamiguchi et al.
patent: 5059365 (1991-10-01), Hertzer et al.
patent: 5069613 (1991-12-01), Inaba et al.
patent: 5149471 (1992-09-01), Catanzaro et al.
patent: 5180530 (1993-01-01), Cropper et al.
patent: 5190714 (1993-03-01), Reinhart
patent: 5251146 (1993-10-01), Neko et al.
patent: 5279778 (1994-01-01), Taira et al.
patent: 5362222 (1994-11-01), Faig et al.
patent: 5370524 (1994-12-01), Liang et al.
patent: 5547619 (1996-08-01), Obayashi
Chang Han-Chieh
Chao Chin-Yu
Horng Shui-Bin
Hsiao Chung-Hsih
Laing Muh-Wang
Heitbrink Jill L.
Industrial Technology Research Institute
Liauh W. Wayne
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