JPS5918324B2 - Manufacturing method of glass handle tip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a glass cup with a handle, and more particularly to a method of manufacturing a glass cup with a handle using an automatic molding machine.

Conventional glass cup with a handle (hereinafter simply referred to as a cup with a handle).

) is generally carried out automatically using a press forming method, and as shown in Fig. 1, the tip body 21 and the handle 22 are press-molded at the same time, so it is necessary to form the mouth part 23 of the tip body thinly. It has the drawback that it is difficult to apply and feels bad when it hits the lips.

The present invention solves the above-mentioned conventional drawbacks and provides a method for manufacturing a glass handle tip that can automatically mold a handle tip with a thin mouth.

However, in this invention, the bottom of the tip body having a thin-walled mouth portion that has been blow-molded in advance is replaced with a smooth spherical wall provided at the lower end of the side wall of the platform forming cavity that joins the composite molding cavity and the bottom of the tip. The handle is fitted into a mold provided with a handle-forming cavity that communicates with the reservoir, and the base, the rigging, and the handle extending from the joint of the bottom of the tip are press-molded together and simultaneously connected to the tip main body. It is something to do.

The present invention will be explained in more detail below with reference to embodiments shown in FIGS. 2 to 5.

First, the tip body 1 is molded by a normal rotary blow molding method.

This tip body 1 has a thin side wall 2 and a relatively thick bottom part 3.
It consists of

This tip body 1 is placed on a stand 4 with the bottom 3 facing upward as shown in FIG.

At this time, it is preferable that the temperature of the tip body 1 is as high as possible without deforming it.

On the other hand, a handle and a mold 5 for composite molding are provided above the stand 4.

This mold includes a side wall receiving part 6 into which a part of the side wall 2 of the tip main body 1 is fitted with a gap, a composite mold cavity 7 provided above this, and a lower end of the side wall of the composite mold cavity. Flesh pocket 7 that is partially bulged into a smooth spherical shape
A bag-shaped handle molding cavity 8 communicating with a is formed.

This mold 5 is a split mold and can be divided along a vertical plane including the center line of the handle molding cavity 8.

Further, in FIG. 2, the composite molding cavity 7 has a substantially cylindrical shape with a gently uneven surface, but it may have an appropriate shape or a pattern may be formed on the outer periphery of the table 11.

After the mold 5 having the above structure is closed, the table 4 on which the tip body 1 is placed is raised, and the bottom portion 3 of the tip body 1 is fitted into the composite molding cavity 7 as shown by the chain line in FIG.

At this time, the tip body 1 is positioned in contact with the contact portion 9 at the lower end of the can molding cavity 7.

Next, molten glass is introduced from the upper end of the can-forming cavity 7 and pressed by a plunger 10, as shown in FIG. 3, to press the molten glass into the can-forming cavity 7 and the handle-forming cavity 8.

At this time, the molten glass flows from the can-forming cavity 7 into the handle-forming cavity 8 through the thickened part 7a, which is formed into a smooth spherical shape and has low flow resistance, so that the molten glass flows into the handle-forming cavity 8 by a low press pressure. Fill inside.

In addition, the meat pocket 7a is provided at the lower end of the side wall of the can-forming cavity 7 that joins the bottom of the tip, and since a drop in the temperature of the molten glass is prevented, the glass can be moved into the handle-forming cavity 8 more smoothly. will flow in.

As a result, the base 11 and the handle 12 are integrally formed above the tip body 1, and at the same time, these are integrally connected to the tip body 1.

Next, the plunger 10 is raised, the mold 5 is opened, and the hand tip 13 shown in FIG. 5 is taken out.

This handle tip 13 has a thin mouth portion 14.

In the above embodiment, the handle molding cavity 8 is shaped like a bag, and the upper end 15 of the handle 12 in FIG. Since it only needs to be brought into contact with the mold 5, molding will not be hindered even if the side wall 2 is slightly deformed.Furthermore, the thick wall that cools slowly after blow molding is inserted into the platform molding cavity γ. Since the bottom part 3 is the bottom part 3, it is in reliable contact with the contact part 9, and even if high-temperature molten glass flows in, cracks are less likely to occur, and the defect rate is low.

It is also possible to connect the upper end portion 15 of the handle to the side wall 2 by communicating the handle molding cavity 8 to the side wall receiving portion 6 having the same shape as the side wall 2 of the tip.

As explained above, in this invention, the base and the handle are integrally press-molded on the bottom of the tip body which has been blow-molded in advance, and are connected at the same time. Therefore, it is possible to mass-produce a tip with a hand with a thin mouth part by automatic molding. This makes it possible to inexpensively manufacture high-quality hand-held tips that can be used for a wide range of purposes, including commercial use.

In addition, since the molten glass flows into the handle-forming cavity through a smooth spherical bulge provided at the lower end of the side wall that joins the bottom of the tip of the can-forming cavity, the press pressure can be low, and press forming There is no cracking over time, and no defects such as cracks occur at the joint between the tip body and the handle.

Furthermore, since the handle is molded integrally with the base which is connected to the bottom of the pot tip body over a wide area, the handle is fixed to the pot tip body with sufficient strength, and no breakage or breakage of the handle occurs in the pot tip production process.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a conventional hand-operated tip, and FIGS. 2 to 5 show an embodiment of the present invention.
FIGS. 2 and 3 are longitudinal sectional views showing the process of manufacturing a hand tip, FIG. 4 is a sectional view taken along the line A--A in FIG. 3, and FIG. 5 is a partially cutaway front view of the molded hand tip. 1...Cop body, 3...Bottom, 5.
... Mold, γ ... Can molding cavity, γa.
...Meat pocket, 8...Handle molding cavity,
11...stand, 12...handle, 13...
... Hand-picked tip.

Claims (1)

[Claims] 1. Connect the bottom of the tip body having a thin-walled mouth portion that has been blow-molded in advance to a smooth spherical fat pocket provided at the lower end of the side wall of the platform forming cavity that joins the synthetic molding cavity and the bottom of the tip. A glass handle is fitted into a mold having a cavity for molding a handle that communicates with the handle, and the base, rigging, and a handle extending from the joint of the bottom of the tip are press-molded together and are simultaneously connected to the tip body. How to make Kotup.