CZ2006657A3 - Mold for I.S. machine - Google Patents

Abstract

The mold opening and closing mechanism (10) includes a housing (12) having an upper wall (14) and a rear wall formed of an outer panel (15) and a center panel (16). A long wall (18) is attached to the cover on each side. The molds (20) are mounted on a carrier or mold holder which is secured by a pair of grooves (26) disposed in the upper and lower slide bearings (28) in the long walls (18).

Description

The mold opening and closing mechanism (10) comprises a cover (12) having an upper wall (14) and a rear wall formed from the outer panels (15) and the center panel (16). A long wall (18) is attached to the cover on each side. The molds (20) are mounted on a support or mold holder which is secured by a pair of grooves (26) located in the upper and lower slide bearings (28) in the long walls (18).

CZ 2006 - 657 A3

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Mold for I.S. machine

Technical field

The present invention relates to machines with separate parts

I.S. (individual section), which manufacture glass bottles and, more particularly, mold opening and closing mechanisms for such machines and molds utilizing such mechanisms.

BACKGROUND OF THE INVENTION

Machine I.S. it contains several (mostly 6,8,10 or 12) identical parts. Each portion has an empty station comprising a mold closing and opening mechanism having a pair of opposing mold arms that are movable between open and closed mold positions. The mold arms support several inserts on which they are located anywhere from one to four empty mold halves. Each part also has a blow station comprising a similar mold opening and closing mechanism.

U.S. Pat. U.S. Patent No. 5,865,868 indicates a conventional mold opening and closing mechanism where the mold arms are supported for axial displacement. Upper and lower inserts are attached to the arm to hold one half of each desired pair of molds. In a triple dose application, the insert may have a first insert portion to support two mold halves and a second insert portion to support one mold half, with the first insert portion a second insert portion to compensate for clamping forces when the molds are closed.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide improvements to the I.S. and improving the molds for their use.

Other objects and advantages of the invention will be apparent from the following section of this specification and from the accompanying drawings.

illustrating simultaneously preferred embodiments comprising the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a rear oblique view of part of the mold opening and closing mechanism of an I.S machine;

Figure 2 is a similar view of the mold carrier and driving parts of the mold opening and closing mechanism shown in Figure 1;

Figure 3 is a front oblique view of the mold carrier shown in Figure 2;

Figure 4 is a rear view of one of the molds shown in Figure 1; and

Figure 5 is a cross-sectional view of the mold shown in Figure 4 taken therefrom at 5-5

DETAILED DESCRIPTION OF THE INVENTION

Each part of the I.S. The machine has an empty station and a blow station with each station having an opposite pair of mold opening and closing mechanisms. Figure 1 illustrates one of these mechanisms. The mold opening and closing mechanism 10 comprises a cover 12 having an upper wall 14 and a rear wall formed from the outer panels 15 and the center panel 16. A long wall 18 is attached to the cover on each side. Also three molds 20 are shown which are located in the open position. forms. The cover is located at the top of the housing portion 22.

The molds 20 are mounted on a carrier or mold holder 24 (Figure 2), which is secured by a pair of grooves 26. The grooves are located in the upper and lower slide bearings 28 in the long walls 18 (Figure 1). The mold carrier is moved by a drive that includes a servomotor 30 coupled to a motion bolt 32 that is operatively connected to the motion nut 33. A pair of rod 34 connects the motion nut and the carrier 24. Thus, the carrier can be moved from a closed position to an open position.

The inner surface of the carrier is shown in Figure 3. From the inner surface of the carrier 24 extends outwardly from the mold mounting portion 25, which comprises a plurality of contact surfaces 27, 27A. Two variants are shown. The first is a plain vertical flat wear surface 27. A second, vertical wedge member 29 having a front flat vertical contact surface 31 for the mold is located between the lateral vertical flat contact surfaces 33 for the mold defining the contact surfaces 27A for the mold. These three contact surfaces of the mold penetrate in parallel, but it should become necessary to move the held mold towards its opposite mold, the wedge being actuated by the screw 35 to advance the front vertical relative surface of the wedge.

The lower and upper pairs of stops 36 for each mold are located on the vertical grooves 37 on the mold mounting portion 25 and are attached to the support. The associated pairs of stops have a left-hand run-in 38 and a right-hand run-in 40, which with the inner surfaces 42, 44 define a "T-slot". The stops have a horizontal spacing 50 between them and the recesses have a selected spacing 52. The lower stops can be situated at different heights so that molds having different heights can be accommodated. The upper and lower stops thus define a vertically elongated "T.

Figures 4 and 5 illustrate one of the molds shown in Figure 1. The molds shown are empty molds (the surface 54 of the preform is shown by the dashed line), but can also be blow molds producing bottles from preforms. Each mold has a locating structure or key 55 in the shape of a vertically elongated "T", an imaginary upper and lower apex of the "T 56" has a width 52 and a perpendicular support "T 58" has a width of 50 that extends from the upper apex of the "T" 60) to the bottom of the mold (bottom of the lower T-piece). The width 57 (Figure 5) of the top of the T pieces 56 is smaller than the corresponding dimension of the recesses 38, 40 to allow the mold wedge 29 to move toward its associated mold.

The mold is placed horizontally in position by seating the T-key in the T-slot in the carrier. The mold will be positioned vertically when

The horizontal flange 60 stops at the top of the mounting stop holder surface 62 and accordingly the vertical dimension 59 between the flange 60 and the upper surface 61 of the mold carrier will determine the vertical location of the mold.

The opposite mold pair achieves the desired configuration with respect to further forming an inner taper 64 on one mold face and an outer taper 66 (Figure 1) on the other mold face or with some other alignment device. As shown, each T-shaped key has a rear vertical face that is parallel to the front vertical surface 72 of the mold. When the molds are closed, this flat bottom surface will be pressed against the adjacent worn plate. Suitable notches 71, 73 allow access to the tool for the wedge adjusting screw 35.

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Patent claims

Claims (3)

1. Mold for I.S. a machine comprising a flat vertical front face, a surface defining a glass article provided on said flat vertical front face, said mold having upper and lower portions, an upper mold portion having a back face, and a lower mold portion having a rear flat vertical end face parallel to said flat vertical front face for transmitting clamping forces acting on a flat vertical front face, a rear face of the upper mold part connecting the rear face of the lower mold part in a horizontal flange, and a lower mold part comprising a vertically elongated T-shaped key having an upper surface; 'T. The mold holder of claim 1, wherein said vertically elongated key of the shape of the upper T-pieces. contains upper and lower pairs Five-it & phenomenon. • · · ··· 1/4 FIG. 1 3/4 w 9 9 ·· ·· · • ·