JPS6144815B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a glassware having a mouth portion eccentric to the main body.

(Prior art) Glass vessels such as glass bottles have been produced in various shapes since ancient times, but for example, as shown in Figure 3, most glass vessels have had their openings eccentrically positioned relative to the main body. Never manufactured. The reasons for this are, firstly, that it is difficult to move a large amount of glass laterally from the plunger for forming the mouth inside the rough mold to form a parison with an eccentric mouth; The wall thickness becomes extremely uneven depending on the amount of eccentricity, making it difficult to form. Third, the demand for this type of glass container is relatively small, so it is not economical to design and manufacture a dedicated machine. It is important not to get into trouble. For these reasons, it has been considered that glass containers with eccentric mouths can hardly be manufactured except by artificial molding methods.

(Object of the Invention) The present invention solves these problems and provides a method for manufacturing a glassware having an eccentric mouth, which can efficiently form a glassware having an eccentric mouth without using a special machine. It was completed with the purpose of

(Structure of the Invention) The present invention includes a single-cavity rough mold holder set in a multi-cavity glass molding machine, and a mouth portion of the rough mold holder that corresponds to a single plunger of a plurality-cavity plunger mechanism. Attach a single-cavity rough mold that is eccentric and insert a gob into the center of the rough mold at a position that is eccentric to the single plunger. This method is characterized by molding an eccentric parison, transferring it to a single-cavity finishing mold, and blowing it into the final shape.
Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment using a double cavity IS type glass forming machine.

In FIGS. 1 and 2, reference numeral 1 denotes an IS type glass molding machine for double cavities equipped with a plunger mechanism 2 for double cavities, and a rough mold holder 3 for single cavities is set in the glass molding machine. A single-cavity rough mold 6 is attached to the rough mold holder 3, with the opening 4 aligned with the single plunger 5 of the plunger mechanism 2 and eccentrically arranged. The center of the upper end of the parison-forming cavity 7 of the rough mold 6 is approximately aligned with the center of the rough mold 6, and the gob fed to the center of the rough mold 6 by the gob supply device for single cavity is inserted into the parison-forming cavity 7. so that it is located near the center of the top edge. Furthermore, a mouth molding die 8 is attached to the parison transfer arm (not shown) only on the side corresponding to the single plunger 5 of the plunger mechanism 2. The mouth molding die 8 thus set was placed on the single plunger 5, and the eccentric rough mold 6, whose mouth was aligned with the single plunger 5, was closed around it. A gob is placed in the center of the rough mold 6 at a position eccentric to the single plunger 5, and an eccentric parison is formed using only the single plunger 5. At this time, it is preferable to cover the other plunger side of the plunger mechanism 2 with a cap 9 for preventing leakage of counter blow air. This eccentric parison is molded from a gob fed to the center of the rough mold 6, so it is easy to mold, and the wall thickness of the rough mold 6 for molding the eccentric parison is limited except for the area near the mouth 4. Since there is no extreme difference, the temperature distribution of the eccentric parison is almost uniform.The eccentric parison molded in this way is molded into the opening mold 8 after the rough mold 6 is opened.
Together with this, it is transferred to a single-cavity finishing mold and blown into its final shape. Note that the blow head for blowing air into the finishing mold may be used on only one side for a double cavity, or may be a large one for a single cavity. Glassware 11 with eccentric mouth blown into final shape
is taken out onto the conveyor by take-out tongs for the double cavity, and the mold 8 for forming the mouth part is
returns to the single plunger 5 on the rough mold side, and the same molding cycle is repeated thereafter.

In the embodiment described above, an IS type glass forming machine for double cavity was used, but it is also possible to use one for triple cavity. In this case, either side of the plunger mechanism for triple cavity Only this plunger is used for forming eccentric parisons. In addition, in the above embodiment, a glassware is formed in which the opening is eccentric by half the distance between the centers of the plungers of the plunger mechanism 2 for double cavities, and in a typical IS type glass molding machine, this eccentricity is 54 mm. However, rough type 6
By making the parison molding cavity 7 further eccentric beyond the center of the rough mold 6, it is possible to mold a glassware having a mouth portion eccentric by 54 mm or more.

(Effects of the Invention) As is clear from the above description, the present invention can be applied to a glass molding machine for multiple cavities, which is used in ordinary glassware manufacturing, to form a single-cavity rough boulder, a rough mold, and a finishing mold. It is possible to manufacture glassware with an eccentric mouth by simply setting the following items, and unlike the case where a special-purpose machine is manufactured, it is possible to immediately respond to the demand for relatively small lots. Further, the present invention provides a single cavity rough mold holder with a single cavity rough mold whose opening portion is eccentrically aligned with a single plunger of a plurality of cavity plunger mechanisms, and the single cavity rough mold is attached to the single cavity rough mold holder. Since the eccentric parison is molded using only the plunger, the gob is placed in the center of the rough mold, and the thickness distribution of the rough mold does not become significantly uneven, making it easy to mold the eccentric parison. By transferring this eccentric parison to a single-cavity finishing mold and blowing it into the final shape, it is possible to efficiently mold a glassware having an eccentric mouth. As described above, the present invention makes it possible to manufacture a glassware having an eccentric mouth, which could not be manufactured industrially in the past, and thus makes an extremely large contribution to the industry.

[Brief explanation of the drawing]

Figure 1 shows one of the glass forming machines used in the present invention.
FIG. 2 is a partially cutaway front view showing an example, FIG. 2 is a partially cutaway plan view of the main part, and FIG. 3 is a front view showing an example of a glassware having an eccentric mouth. 1...Glass forming machine, 2...Plunger mechanism, 3...
Rough mold holder, 4... Mouth part, 5... Plunger, 6... Rough mold.

Claims (1)

[Claims] 1. A rough mold holder for a single cavity is set in a glass molding machine for multiple cavities, and a single cavity whose opening is aligned with a single plunger of the plunger mechanism for multiple cavities and eccentric Attach a rough mold of Bitty, insert a gob into the center of this rough mold and at a position eccentric to the single plunger, form an eccentric parison from this gob using only the single plunger, and then form a single A method for producing glassware having an eccentric mouth, characterized by transferring the glassware to a finishing mold in a cavity and blowing it into a final shape.