Mould opening and closing mechanism

Glass manufacturing – Mold with separating means or clamping means – With mold support or carrier

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

65227, 65261, 65359, C03B 1106

Patent

active

044486006

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention is concerned with a mould opening and closing mechanism for use in opening and closing three moulds simultaneously.
In various industries, it is necessary to open and close three moulds simultaneously. For example, when glassware containers are manufactured by an individual section machine with three containers being manufactured simultaneously, gobs of glass are supplied to three parison-forming moulds at a molding station of the machine and the completed parisons are transferred to three further moulds at a blowing station of the machine to be blown into the finished containers. At both stations of such a machine, it is necessary to provide a mould opening and closing mechanism for use in opening and closing three moulds simultaneously at appropriate times in the cycle of operation of the machine.


BACKGROUND ART

Existing mould opening and closing mechanisms for use in opening and closing three moulds simultaneously by moving a portion of each mould relative to further portions of that mould comprise three mould portion supports each arranged to support a portion of a mould, three levers each of which is pivotal on a fixed pivot and each of which is pivotally connected to one of the mould portion supports, and moving means connected to the levers and operable to cause the levers to pivot about the fixed pivots so that the mould portion supports are moved and the mould portions are moved away from or towards further mould portions thereby opening or closing the moulds. It is desirable that such a mechanism should operate rapidly and accurately and should close the three moulds with substantially equal pressures. However, the problem of providing substantially equal closing pressures to three moulds with rapidly and accurately operating mechanism as hitherto only been solved partially.


DISCLOSURE OF INVENTION

According to the invention the moving means of the mould opening and closing mechanism is connected to the three levers by a system of links comprising a link pivotally connected at a central region thereof to the moving means, the link being pivotally connected on one side of the central region thereof to a first of the levers and also being pivotally connected on the other side of the central region thereof and half the effective distance therefrom to a further link of the system, the further link being pivotally connected to a second and a third of the levers on opposite sides of and at equal effective distances from its pivotal connection to the link.
In a preferred mould opening and closing mechanism, in order to improve the accuracy of the mould closing, the three mould portion supports are mounted on linear slideways extending towards and away from the further mould portions. For ease of construction, a central one of the three mould portion supports is mounted on a slideway and the slideways of the other two supports are formed on the central support.
In order to enable the mould opening and closing mechanism to move further portions of the moulds, in the preferred mould opening and closing mechanism, the moving means is also connected to three further levers each of which is pivotal on a fixed pivot and each of which is pivotally connected to a further mould portion support arranged to support one of the aforementioned further mould portions so that operation of the moving means is effective to move the mould portions and the further mould portions towards or away from each other.


BRIEF DESCRIPTION OF DRAWINGS

In the accompanying drawings:
FIG. 1 is a cross-sectional view of a moulding station which incorporates a mould opening and closing mechanism according to the invention, the line I--I in FIG. 2 indicating the section on which FIG. 1 is taken, the station being shown in a mould open condition;
FIG. 2 is an underneath view of the moulding station taken in the direction of the arrow 2 in FIG. 1 and showing the station in a mould closed condition;
FIG. 3 is a sectional view taken on the line III--III in FIG. 1; and
FIG. 4 is a sectional view taken on

REFERENCES:
patent: 3473639 (1969-10-01), Mumford
patent: 3607207 (1971-09-01), Dahms et al.
patent: 3617233 (1971-11-01), Mumford
patent: 3721545 (1973-03-01), Irwin
patent: 3967946 (1976-07-01), Campbell
patent: 4009016 (1977-02-01), Foster
patent: 4137061 (1979-01-01), Mallory
patent: 4261724 (1981-04-01), Sarkozy

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Mould opening and closing mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mould opening and closing mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mould opening and closing mechanism will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-843087

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.