JPS6065737A - Plug with hollow knob part and production thereof - Google Patents

Abstract

PURPOSE:To produce a plug with uniform hollow plug shape at all times, by forming a protrusion at the central part of a top wall of a bulged part in the form of a headband, of a knob obtained by molding a glass tube by fusion. CONSTITUTION:A capillary 12 is fused to a bulged part (8a) in the form of a headband of a knob formed previously from a glass tube at right angle, and a continuous part (8d) is formed on a part opposite to the capillary 12 on the peripheral wall of the bulged part (8a) in the form of the headband. The capillary 12 is held by a chuck 14 of a lathe, and a separately manufactured plug body 5 is fixed on another chuck 16 through a nipping tool 15. Joining parts (8d) and (5a) are mutually joined while rotating both the connection part (8d) and the body 5 in the same direction. After joining, the base part (12a) of the capillary 12 is sealed and fused to form a protrusion (8b) and give a finished product.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stopper made of glass with a hollow knob and a method for manufacturing the same.

Conventionally, in order to manufacture this type of stopper, first a part of the glass tube (1) is heated and stretched, and then a second part of the glass tube (1) is heated and stretched.
After forming two necks (la) (la) by applying a second heat-stretching process with an appropriate spacing (1) as shown in the figure, one end (1b) is welded as shown in Figure 3. and the other end (
While blowing (b) from 1c), shape the whole into a hollow shape to form a jujube-shaped knob (2) as shown in Fig. 4.
After that, while heating the thin tube (1d) on the side to be blown, bend it into a U-shape (1e) as shown in Figure 5, and then
After bending it into a letter shape (1f) and then welding the constriction part (1g), blow (b-) L from the thin tube (ld) side to create a connection that will be connected to the entire stopper as shown in Figure 6. Mouthpiece (2a
) is heated and formed. On the other hand, the glass tube (4) becomes the stopper body (5).
) as shown in Figure 7, and as shown in Figures 9 and 10 (
3), and then cut along the imaginary line (C) to form the connecting port (5a).

As shown in Fig. 11, the tubes (1) and (4) formed as described above are aligned so that their two speed ports (2a) and (5a) are in contact with each other, and the tubes (1) and (4) are rotated. After joining the knob (2) and the stopper body (5) by welding, the tube (4)
When molding the mold (3)? a (3a), make a hole in the peripheral wall at the mark (4a) formed in the axis, insert the glass tube (6) into this, and melt the joint (6a) with the stopper body (5). At the same time, the tube (1) is formed using a mold (17) as shown in Figure 13.14.
d) as the axis, and blow (1d) from the pipe (1d).
b) Using the groove (4b) as a mark, the lower end (4a) is formed into a convex cross-section as shown in FIG. In addition, (4
b) is obtained by the groove (3b) of the mold (3).

Thereafter, the tube (1d) is locally heated and sealed at its base (ld') to complete the hollow stopper.

However, in the conventional manufacturing method as described above,
When joining the pipe (1) and the pipe (4) with one joint, and when forming the lower end (4a) of the pipe (4), the rotation axis is the pipe (
ld), it is necessary that the center of the square (1d) coincides with the center of the knob (2).

However, the tube (1d) is made by melting the glass locally, bending it into a U-shape as mentioned above, and then bending it into an L-shape so that its center coincides with the center of the knob. Because of this, this work required a high level of skill and skill, and was difficult.

Furthermore, since the local heating work when finally melting this tube (1d) is usually done at a high temperature of around 2,000°C, the air inside the stopper body and knob (2) expands abnormally, causing the melt to melt. The sealing process was extremely difficult and resulted in an unstable condition, which resulted in irregular shapes and the disadvantage that the intended shape could not be changed.

In view of the above points, the present invention was devised to provide a glass stopper whose knob always has a well-shaped shape. The knob part is provided with a hollow plug which has a protrusion formed by melt-cutting on the part thereof, and the method for manufacturing the plug includes cutting the knob part at right angles to the headband-shaped bulge part of the knob, which has been previously shaped by shaping process from a glass tube. At the same time as welding the capillary, a connecting part is formed in the portion of the circumferential wall of the headband-shaped bulge that faces the capillary, and then the capillary is rotated to rotate the knob, and a stopper body formed separately by molding is attached. While rotating at the same time,
The pre-formed connecting part of the plug body and the connecting part of the knob are welded to connect the entire plug to the knob, and then the attachment part of the thin tube to the knob is melted, and the melted part is sealed. The present invention proposes a method for manufacturing a stopper with a hollow knob.

The present invention will be explained below based on the drawings.

Figures 15 and 16 are a front view and an AA sectional view of the stopper of the present invention.

(5) is a plug body similar to a conventional hollow plug, and is formed with a passage (7) and a lower end (4a) with a convex cross section.

The stopper body may be solid instead of hollow. (8) is a knob, a headband-shaped bulge (8a) is formed in its center, and a protrusion (8b) is formed at the center of the top wall of the headband-shaped bulge (8a) by cutting. is formed. Picking (
The shape of 8) is regular and symmetrical.

Next, a method for manufacturing the stopper of the present invention as described above will be explained.

First, the knob heats and stretches one end of a glass tube as shown in FIG. 17, as shown in FIG. 18, and then melts it along the imaginary line (e).

At this time, it is not necessarily necessary to stretch it, and it is sufficient if it can be melted.

Next, the melted side was molded into a mold (9) as shown in Figure 21.22.
), blow it from the unsealed side (b), rotate it in the mold while heating, and seal the end (8C) as shown in Figure 19.
), and after molding the headband-shaped bulge (8a), using the mouth edge (9a) of the mold (9), the 20th
Make a bulging mark (10) as shown in the figure.
) is the distance (m) (m) (n) (n
) are each formed equally.

Next, the side of the glass tube with the mark (10) is heated, stretched and cut, and then a hole (8d) is formed in the center of the headband-shaped bulge (8a) while blowing (b). ,
A thin tube (12) is welded and connected at right angles to this hole (8d).

Connecting the capillary tubes (12) at right angles can be easily achieved by using a support. After joining the thin tube (12), the knob body is supported by the jig (17), and based on the mark (lO), this part of the hyaline tube is cut by melting, and the bulging part is cut as shown in Fig. 23. (8a) and put it in the mold (13) until it reaches around (8a).
12) to the heated end (8c') while blowing (b).
) is rotated and molded to adjust its shape, and then a connecting port (8d) that becomes a connecting part with the plug body is heated and molded.

On the other hand, the stopper body (5) is manufactured in the same manner as before.

As shown in FIG. 24, the knob (8) and the stopper main body (5) manufactured separately as described above are gripped and held in the chuck (14) of a lathe via a cushioning material (not shown). The stopper main body (5) is fixed to another chuck (16) via a clamping tool (15), and while rotating both in the same direction and adjusting the distance between them as appropriate, the connecting port (8d) (
5a) Joining comrades. At that time, while blowing (b) from the thin tube (12) side, local heating is performed to fuse.

At this time, the headband-shaped bulge (8a) not only serves to prevent the entire knob from softening and deforming when connecting the connecting ports (8d) and (5a), but also prevents the machining from being jeopardized.
This can improve the strength of the bond.

The stopper with the stopper body and knob combined is then attached to the base of the tubule (
12a) is melt-sealed and cut, and this becomes a protrusion (8b) to form a finished product.

When cutting and sealing the base (12a) of the thin tube, this is not provided at one end of the knob as in the conventional case, but at the center of the headband-shaped bulge (8a).
The right and left sides of the knob do not become irregularly shaped, and there is no problem like the conventional one.

In any case, the present invention provides a stopper with a hollow knob, which has a protrusion formed by fusing at the center of the neck of the headband-shaped bulge of the knob, and also provides a method for manufacturing the same. The stopper is reinforced by a headband-shaped bulge on the knob, and is easy to grip when operating the stopper, and has a protrusion formed by welding on the top wall of the headband-shaped bulge. It is characterized by having an accessory-like design structure and a unique appearance that has not been seen before, and according to the manufacturing method of the stopper, a headband-shaped bulge is formed so that the length of both ends is shortened from the center of the knob. It is easy to make the plug almost uniformly, and by welding a thin tube perpendicular to the headband-shaped bulge and molding it using this as the rotation axis, it is easy to bring out the center of the stopper itself, which makes the knob part This greatly helps to securely weld the material to the stopper body, and prevents the knob body from deforming when the knob part and the stopper body are joined together.At the same time, the processing of the opposite end of the thin tube creates a headband-shaped bulge on the knob part. It has the characteristic that it is easy to do without any deformation.

Therefore, it is much easier to manufacture and handle than the conventional method, which requires special skills to manufacture regardless of the size of the stopper with a hollow knob.

[Brief explanation of the drawing]

Figures 1 to 6 are explanatory diagrams of the conventional manufacturing process of the knob, Figures 7 and 8 are explanatory diagrams of the manufacturing process of the stopper body, and Figure 9 is a front view of the mold used to manufacture the body. Figure 10 is the B-B
11 and 12 are illustrations of the process of joining the knob and main body, Fig. 13 is a plan view of the mold used to mold the lower end of the stopper main body, Fig. 14 is a front view of the same as above, and Fig. 15 is a cross-sectional view. A front view of the stopper of the present invention, FIG. 16 is a sectional view taken along the line A-A, FIGS. 17 to 20 and 23 are explanatory diagrams of the manufacturing process of the knob of the stopper of the present invention, and FIG. 21 is a cross-sectional view of the stopper of the present invention. FIG. 22 is a front view of the mold used to mold the knob, FIG. 22 is a sectional view taken along the line C-C, and FIG. 24 is an explanatory diagram of the process of joining the knob and the closure body of the present invention. (3)... Mold for molding the stopper body (5)... Stopper body (6)... Glass tube (7)... Passage (8)... Knob (8a)... ... Headband-shaped bulge (8b) ... Protrusion (9) ... Knob mold (12) ... Thin tube (13) ... Knobs mold Fig. 4 2 s 5 figure, b 6th machining 9th figure 7 figure ↓ 9th rpJ figure 15 1-=-A figure 21 figure 22 figure 17 figure 18 figure b figure 20

Claims (1)

[Scope of Claims] +11 A plug with a hollow knob, characterized in that the knob is formed from a glass tube and has a protrusion formed by fusing at the center of the top wall of the headband-shaped bulge. . (2) Welding a thin tube at right angles to the headband-shaped bulge of the knob that was previously formed by molding from a glass tube,
A connecting part is formed in the part of the local wall of the headband-shaped bulge that faces the thin tube, and then the thin tube is rotated to rotate the knob, and at the same time, the plug body, which is separately formed by molding, is rotated. The formed connecting part of the plug body and the connecting part of the knob are welded to connect the plug body and the knob, and then the attachment part of the thin tube to the knob is melted, and the melted part is sealed. A method of manufacturing a stopper with a hollow knob.