Apparatus and method for inverting a stop flange on a tamper-indicating closure
View Patent ↗An apparatus for inverting the stop flange on a tamper-indicating closure, from an axially outwardly oriented position as molded to an axially inwardly oriented position for use, includes a support base for supporting the closure such that the stop flange as molded is spaced from and oriented away from the support base. A pedestal is movably carried by the support base at a position spaced from the support base. A locator ring is carried by the pedestal and movable with the pedestal to engage the stop flange on a closure carried by the support base and to bend the stop flange radially inwardly. An inversion ring moves through the locator ring to engage and invert the stop flange that is bent radially inwardly by the locator ring.
1. A method of inverting a stop flange on a tamper-indicating closure from an axially outwardly oriented position as molded to an axially inwardly oriented position for use, which includes the steps of:
(a) bending the entire stop flange from the axially outwardly oriented position axially outward of a free edge of a skirt of the closure to a radially inward orientation radially inward of the free edge of the skirt by engaging the stop flange with a circumferentially continuous locator ring, and engaging the free edge of said closure skirt with the locator ring, and then
(b) bending the entire stop flange from the radially inward orientation to the axially inward orientation axially inward of the free edge of the skirt by engaging the stop flange with a circumferentially continuous inversion ring.
2. the method set forth in claim 1 wherein said step (a) is continued during said step (b).
3. the method set forth in claim 2 wherein said step (a) includes engaging the closure with a conical surface on said locator ring to round said closure prior to said step (b).
4. A method of inverting a stop flange on a tamper-indicating closure from an axially outwardly oriented position as molded to an axially inwardly oriented position for use, which includes the steps of:
(a) rounding a skirt of the closure by engaging a radially outer edge of the closure skirt with a flaring surface of a circumferentially continuous locator ring, and then
(b) bending the stop flange to a radially inward orientation by engaging the stop flange with a shoulder of the circumferentially continuous locator ring and engaging a free edge of the closure skirt with the shoulder, and then
(c) bending the stop flange to the axially inward orientation axially inward of the free edge of the closure skirt by engaging the stop flange with a circumferentially continuous inversion ring.
5. The method set forth in claim 4 wherein the flaring surface is conical.