CS265365B1 - Process for shaping hollow glass objects - Google Patents

Abstract

The essence of the solution is that the compact batches are gripped gripping heads, and eventually preheating under current control the action of compressed air in a controlled manner in the muscular device. Obtained preform after transfer to the final form blows into the final product. Trajectory typing, time sequence of each technological operations shaping, control pressure conditions automatically controlled.

Description

The invention relates to a method for blow molding hollow glass articles. The machine-preformed compact batch of glass of suitable temperature for processing is rolled and the preform is transferred to a blow mold where it is blown to a final shape.

The manual shaping of glass articles, larger compact batches of glass is known. Numerous processes for producing compact batches of enamel alone, such as suction into the suction head or sub-level dosing, are also known. The preformed compact mass of glass is manually adhered to the paleus by means of a stick, followed by possible pre-heating of the hand muscles. The preform thus obtained is manually blown into the final hollow glass article.

The present process of manually molding a compact glass batch with a considerable amount of manual work by glassmakers is laborious and handling the compact glass batch is difficult. Only some partial operations are mechanized, eg pre-blowing.

Said drawbacks are eliminated or substantially reduced by the mechanical shaping process of the compacted glass batch according to the invention, which consists in adjusting the compacted glass batch to a temperature of 800 to 1150 ° C, fixing it to the pistol by means of the gripping head, and then at least once muscles under the action of compressed air, forming process, from gripping

265 365 compact batches of glass, including movements of the whistle and its trajectory, muscles, blowing in the final form up to the shutdown of the final shape of the glass object are automatically controlled.

An advantage of the method of automated molding of a compact batch of glass according to the invention is that it greatly facilitates the manual work of glassmakers and improves their working environment. This method of machine shaping is particularly advantageous in the manufacture of glass articles of higher weight, in particular in the production of utility or lighting, in the case of falling glass containers.

An exemplary embodiment of the invention is described below and schematically shown in the accompanying drawings, in which Fig. 1 represents the preforming of a compact glass gob, Fig. 2 shows the compacting of a compact glass gob into a preform, and Fig. FIG. 4 shows the trajectory of the whistle during molding.

By some of the known mechanical dispensing methods, for example by suction, inlet and the like, a compact enamel 2 is prepared in the preform 1. The compact glass batch 2 is adjusted to a temperature suitable for further processing according to the type of glass, e.g. barium crystal, to a temperature of 1120 ° C. The compact glass gob 2 is fixed by means of the gripping head 3 to the working end of the piston 4. The hollow of the pipe 4 is connected to a pneumatic unit (not shown) with a source of compressed air. Trajectory pipes 4 during a subsequent molding process is graphically illustrated in Figure 4 _{e r} wherein each position designated by Roman numerals I to IV represent the position of each tibia 4 at the forming operation illogical.

Position I shows the gripping of the compact glass batch 2, muscle position II on the muscle device 7 corresponding to Fig. 2. Position III represents the preheating of the parison 8, the position IV of the whistle 4 above the final mold g and position V detail in Fig. 3. After completion of a molding cycle, blowing the whistle 4 returns to the initial position I _of

265 365

The compact mass of glass 2, usually of greater weight, is gripped into the gripping head 3 of the pistol 4, transferred to a muscular device 7 where a preform is formed under controlled compressed air, rotating the pistol 4 and a linear reciprocating motion simulating It is also possible to pre-heat a compact batch of glass 2 in a preheating furnace 9. Preheating can be carried out before or during the actual muscles. After or during the muscle, the preform 3 can be blown out of the muscular device 7 to more evenly distribute the wall thickness in the preform body 8. The piston 4 with the preform 3 is moved vertically above the final blow mold 5 following a trajectory simulating manual shaping. open to the final mold 5, the base 10 of the final mold 5 is ejected, meanwhile, the glass flows from the preform 8 to the bottom 10, thereby partially preforming the bottom of the final product 6. Then, the bottom 10 slides to its home position, the final mold 5 closes and Finishing of the final product 6. All the mentioned technological operations, their time sequence, control of pressure conditions as well as the trajectory of the whistle 4 and its displacement and rotation are controlled from a single microprocessor control unit (not shown), are fully automated and can be time adjusted, controlled or change. '

Claims (2)

Override the invention A method of blow molding of hollow glass articles, in which a machine-shaped compact portion of a suitable temperature of the sintering material of a suitable temperature for processing is rolled and transferred to a blow mold where it is blown into a final shape. 1150 ° C, fastened to the saws by means of the gripping head, and then at least once controlled under the action of compressed air in the muscular device, automatically controlling the entire blow molding process, from gripping a compact mass of glass through muscles, post blowing, including the movements of the whistle and its trajectory up to the final outage 2 drawings