Inverting mechanism for a machine for shaping glass items

Patent metadata

Field	Value
Publication number	US-11230486-B2
Application number	US-201716495486-A
Country	US
Kind code	B2
Filing date	Aug 2, 2017
Priority date	Mar 23, 2017
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

An inverting mechanism of a glass forming machine includes: a supporting structure; a shaft horizontally located over the upper portion the supporting structure; drive means coupled to a shaft to provide rotational movement to the shaft; a cylindrical body having a longitudinal opening in an eccentric reference axis, which is coupled to the shaft through its longitudinal opening, in an eccentric position; at least one hollow cylinder coupled with each cylindrical body having attached supports to its outer part which are connected to neck ring holder arms so that, by means of a first sliding movement of the hollow cylinder on the cylindrical body, it provides a lateral movement to open and close the neck ring holder arm supports in parallel and, by means of a rotational movement, it moves the neck ring holder arms with a 180° movement from a parison mold to a finish blow mold.

First claim

The invention claimed is:

1. An inverting mechanism for a glassware forming machine comprising:
a supporting structure;
a shaft horizontally located on an upper part of the supporting structure to rotate on a horizontal axis of the shaft, said shaft including a longitudinal central passage with a closed end and an open end and, at least one exit passage connecting a central part of the central passage towards a surface part of the shaft, for introduction of a fluid under pressure;
drive means coupled to the shaft to provide rotational movement to the shaft, on the horizontal axis of the shaft, left or right relative to the horizontal axis of the shaft;
at least one cylindrical body having a front face and a rear face, each cylindrical body having a longitudinal hole in an eccentric reference axis, each cylindrical body being fixedly coupled to the shaft through its longitudinal hole, in an eccentric position;
at least one hollow cylinder coupled to each cylindrical body, each hollow cylinder having supports coupled on an outer part of each hollow cylinder, which are connected to neck ring holder arms so that, by means of a first sliding movement of each hollow cylinder on each cylindrical body, provides a lateral movement right or left to open and close the supports of the neck ring holder arms in parallel and, by means of a rotational movement, to move the neck ring holder arms with a 180° movement from a parison mold to a final blow mold;
at least one cover with one hole in eccentric position, each cover being coupled by means of its eccentric hole to a section of the shaft and, by a periphery of each cover, being fixedly coupled and coinciding with one end of each hollow cylinder, each cover sliding together with each hollow cylinder, wherein the front face of each cylindrical body and each cover form an intermediate chamber for an inlet of a fluid under pressure through the longitudinal central passage and each exit passage of the shaft, said chamber being in coincidence with each exit passage of the shaft;
at least one adjustment element attached to the shaft and located in facing position with each cover, wherein coupling of each adjustment element and each cover forms a hollow internal space therebetween; and,
retracting means located in said hollow internal space to provide a retracting motion to each hollow cylinder and to each cover sliding on said shaft, at a time of interrupting the fluid pressure, to parallelly close the supports of the neck ring holder arms.

2. The inverting mechanism as claimed in claim 1 , wherein the at least one cylindrical body comprises at least one slot on all of a periphery of each cylindrical body and, sealing rings for each slot.

3. The inverting mechanism as claimed in claim 1 , wherein the front face of each cylindrical body and each cover are aligned with respect to a periphery of each cylindrical body and a periphery of each cover in a relationship one behind the other, in such a way that when the shaft is rotated, each cover and each cylindrical body move each hollow cylinder with an eccentric movement.

4. The inverting mechanism as claimed in claim 1 , wherein each adjustment element comprises an adjustable nut.

5. The inverting mechanism as claimed in claim 1 , wherein the drive means comprises:
a gear or toothed crown fixedly coupled to the shaft;
a worm screw attached to the gear or toothed crown, said worm screw being located to freely rotate on the supporting structure;
a rotating shaft having a first end and a second end, the worm screw being fixedly connected to the first end of the rotating shaft, the rotating shaft being placed in the supporting structure to rotate on a horizontal axis of the rotating shaft with a rotational movement left or right relative to the horizontal axis of the rotating shaft; and,
a motor connected at the second end of the rotating shaft to provide a simultaneous rotational movement to the rotating shaft and worm screw to provide a rotational movement to the gear or toothed crown.

6. The inverting mechanism as claimed in claim 5 , where the worm screw is of a double-envelope type.

Assignees

• Vitro Sab De Cv

Inventors

• Tijerina Ramos Victor

Classifications

• C03B9/165 Primary

  Details of such machines, e.g. guide funnels, turn-over mechanisms (C03B9/18 takes precedence) · CPC title

• C03B9/1932

  Details of such machines, e.g. plungers or plunger mechanisms for the press-and-blow machine, cooling of plungers (C03B9/195 takes precedence) · CPC title