DE611197C - Process for making glass vessels from glass tubes - Google Patents

Description

Method for making glass vessels from glass tubes The molding of bottle necks made of glass tubes has so far been carried out in a way that softened it Pipe end is machined by forming tools or in a threaded, etc. Shape is inflated. Both methods can only be used to shape one neck at a time. According to the method according to the invention, this disadvantage is eliminated.

It has been suggested to use glass vessels To produce multiple molds in such a way that the liquid removed from the furnace Glass mass is blown directly into the glass molds, so that after separating the two molded parts at the same time two glass objects are created. In contrast, has the invention set the task of making two abutting bottle necks from glass tubes using a multiple form. So it is according to this invention no need to melt a glass gob and blow it out in one Multiple form to give a certain shape, but the invention offers the possibility of using finished glass tubes in one operation two vessels with adjoining To form bottle necks or the like. By this method, using is more ordinary Glass worker devices given the opportunity in the simplest possible way from finished glass tubes to form two vessels with butting bottle necks.

The invention consists in that one dimensioned at least for two vessels Glass tube is heated between the glass tube ends and the heated point or points be blown out by introducing air into a mold, so that two contiguous Necks arise. Independent pipe bodies are obtained by cutting, which are in known way can be provided with a bottom or further reshaped.

According to this method, bottle necks of a special shape, e.g. B. threaded necks, etc., are formed on glass tubes. The manufacture of with thread necks provided with narrowed injection openings is particularly advantageous.

When shaping, it is useful to already have the later separation point to determine in the neck shape. by providing an annular bead in the mold. The separation point can also be achieved by applying a voltage or by another appropriate relief to be prepared for cutting up; attaching a narrow recess, which runs around the entire circumference, it being useful beforehand If the wall is weakened by stretching, it is particularly easy and clean. Cut up.

The execution of the procedure can be seen from the drawing.

In Fig.'r a glass tube is placed in a known manner over a burner flame turned and heated and softened in a width appropriate for two necks. Ever after - the Hälsferm can reach the softened area for introduction into the mold Shoulders be lowered or narrowed. The glass wall can also be compressed by upsetting it Thicken or turn a little thinned in the middle for later separation. One Thinning in relation to the pipe wall to be formed also occurs when the Heating on both sides of the later separation point takes place more strongly, so that when upsetting only these places are strengthened.

In Fig. 2 is the state of the heated glass tube at the forming point z. B. specified for threaded necks to be formed prior to inflation.

Figure 3 shows inflation in a threaded double port.

In Fig. 1 is the molding of the injection port with a narrowed opening Necks shown, while in Fig. 5, blown bottle necks are more common Art are drawn.

Fig. 6 shows a longer pipe section on which several connected Double necks are blown. With this piece of pipe there is only one base at both ends to be made, while the remaining floors can be melted down by dividing them.

Fig.7 shows an example of the internal design of the double form. at a an annular elevation is attached, which is a uniform depression generated in the pipe wall.

The division is carried out by scratching or breaking off this recess.

The blowing in of air is done in a known manner by either of two Sides or just from one side. In the latter case, the other side of the Sealed pipe.

The shoulder does not necessarily have to be settled, as the mold site can also be heated in a larger width and part of the heated glass wall can be inflated into the subsequent cylindrical shape (Fig.7).

An axially displaceable mandrel can be used to blow in air which at the same time regulates the exact internal shape of the necks produced.

Of course, you can blow from one side of the pipe, while the other side is sealed and the mandrel is passed through the seal will. The regulation of the inside of the neck by the mandrel can also immediately after Inflate after removing the blow heads and, if necessary, after another light The mold area is heated for the purpose of cooling.

When forming threads or similar necks, glass tubes stand and form still or rotate at the same angular velocity, while at the manufacture of cylindrical necks the shape can stand still when the glass tube is rotated. The turning of the glass body during heating is done in a known manner Way through any device. The end of the pipe can be used to blow air be pulled against a blower or a sealing device into the pipe end Blow line are performed, as is also known.

After dividing the connected double necks, it is advisable to fuse the edges with a burner flame. Instead, the edges after heating by a tool, e.g. B. one provided with a plate, axially sliding device (Fig. 8-) can be smoothed.

Any necessary regulation of the inner throat opening can be done with the Fusion or smoothing of the edge can be connected.

To achieve a good sealing surface in threaded necks, this can be The end of the neck can also be ground flat using a carborundum disc.

It may often be advantageous that there is no thread on the outer end of the pipe should sit, but away from that end. Such a shaping was previously not possible with any of the known methods.

With the new process, this is easily possible by that a division is not carried out within the formed site.

So that the capsules, which are used to close the threaded necks, hold tight, it is advisable to choose the thread form somewhat conical. It offers no difficulty in making a conical thread using this method.

Claims (1)

PATE NTANS PRV CHE: i. Method for making glass vessels with special design of the neck from glass tubes by blowing out in a mold, thereby marked. that the lying between the ends of the glass tube heat and softened parts of the pipe are blown into multiple shapes that shape the shape for two butting bottle necks. z. B. threaded necks included. a. procedure for making glass vessels from glass tubes according to claim i, characterized in that that in the multiple forms at the later separation point an expediently triangular one Annular bead is provided, which when blowing out the glass tube in the form in the glass wall creates a notch facilitating the later separation.