Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Coacting shaping surfaces
Patent
1985-05-14
1986-07-08
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Coacting shaping surfaces
425545, 425814, 425DIG34, B29D 500
Patent
active
045990654
ABSTRACT:
A row of slide fastener coupling elements of synthetic resin or metal is pressed between a pair of first and second presser rolls having first and second confronting presser surfaces engaging legs of the coupling elements. The first and second presser surfaces have closest confronting portions spaced from each other by a distance equal to the width of each of the coupling elements. The second presser roll is displaceable with respect to the first presser roll to vary the distance. The first presser roll has a spur gear held in mesh with a pin gear on the second presser roll. The first and second presser rolls can be rotated in synchronism by the spur gear and the pin gear even when the second presser roll is displaced relatively to the first presser roll. The first and second presser rolls also have partition ridges for meshing engagement with the legs to keep them spaced apart at equal intervals. One of the first and second presser rolls has a third presser surface for engagement with coupling heads. Another presser roll has a fourth presser surface in confronting relation to the third presser surface for pressing the coupling elements toward the third presser surface.
REFERENCES:
patent: 4336220 (1982-06-01), Takahashi
patent: 4406849 (1983-09-01), Takahashi et al.
Flint, Jr. J. Howard
Yoshida Kogyo K. K.
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