Plastic article or earthenware shaping or treating: apparatus – Mold opening and closing means and segmented female mold – Articulated link
Patent
1979-05-24
1981-06-30
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Mold opening and closing means and segmented female mold
Articulated link
425593, B29F 100, B29C 300, B30B 116
Patent
active
042760135
ABSTRACT:
A closing and locking device for a press comprising a stationary plate, a stationary head spaced from the stationary plate, and a mobile plate movable toward and away from the stationary plate. Movement of the mobile plate is controlled by a double acting piston-cylinder mechanism. A toggle arrangement is pivotally connected between the mobile plate and the stationary head. A second double acting piston-cylinder mechanism operates, after the first piston-cylinder mechanism moves the mobile plate toward the stationary plate, to position the toggle arrangement for locking the mobile plate in place. The entire closing and locking device is arranged within the external contour of the press. The toggle arrangement plays no part in the major portion of the movement of the mobile plate with respect to the stationary plate, but is activated only to lock and unlock the mobile plate. Provision is made for slowing the flow of fluid to the first piston-cylinder device to permit degassing during compression molding of resins containing expanding agents.
REFERENCES:
patent: 2444123 (1941-06-01), Sebek
patent: 2624915 (1953-01-01), Corson
patent: 3208373 (1965-09-01), Bachelier
patent: 3359598 (1967-12-01), Bury
patent: 3632272 (1972-01-01), Herbener
patent: 3667890 (1972-06-01), Rusinini
patent: 3669599 (1972-06-01), Snider et al.
patent: 4017236 (1977-04-01), Penkman et al.
Flint, Jr. J. Howard
I.M.I. Industria Macchine Idrauliche S.p.A.
Levine Alan H.
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