JP2993874B2 - Glass bottle forming apparatus and its baffle apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rough type baffle apparatus used for forming a glass bottle by a blow-and-blow or press-and-blow method.

[0002]

2. Description of the Related Art A process of forming a glass bottle by a conventional blow-and-blow method will be briefly described with reference to FIG. 7. In FIGS. A parison 5 as a semi-finished product was manufactured from G, and in FIG.
Is transferred to the finishing mold 6 using the reversing device 100, and FIG.
In (f), a glass bottle 7 as a final product is formed in the finishing die 6, and in FIG. 7g, the glass bottle 7 is taken out from the finishing die 6. Referring to FIG. 8 which is an enlarged view of FIG. 7b and FIG. 9 which is an enlarged view of FIG. 7c, the procedure of forming the mouth 3 of the parison 5 will be described. First, as shown in FIG. The semi-molten glass G falls into the mold 1. Thereafter, the plunger 2 is raised, and the tip portion 2a is moved to the guide ring 8 in the neck ring 9.
Go inside. After that, as shown in FIG. 8, the baffle 101 is put on the funnel 103, the settle blow is performed through the supply hole of the baffle 101, and the semi-molten glass G is compressed from above.
Is molded. When the mouth 3 of the parison 5 is formed, in FIG. 9, the plunger 2 descends, and air is blown into the semi-molten glass G of the rough mold 1 through a gap between the plunger 2 and the guide ring 8. Forms the parison 5.

A conventional blow-and-blow method of this kind is known as a molding method suitable for molding a so-called narrow glass bottle.

[0004]

According to this conventional method, first, the semi-molten glass G is guided into the rough mold 1.
As shown in FIG. 7A, a funnel 103
8 to carry out a settle blow.
As shown in FIG.
After the baffle 101 is once removed and the funnel 103 is removed as shown in FIG.
1 is put. In such a conventional method, since the settling blow is performed through the step shown in FIG. 8, there is a problem that the time required for forming the glass bottle becomes long. In order to solve this, conventionally, a so-called post-type rough mold 1 having a funnel function in the rough mold 1 has been adopted, and a valve (not shown) has been incorporated in the baffle 101, and the above-described FIG. Without directly passing through the step shown in FIG. 9, and in this step, settling blow is performed simultaneously.

However, the baffle 101 having a built-in bulb has a problem that the structure is complicated and the cost is high, and the semi-molten glass G is easily clogged in a fitting portion between the baffle 101 and the bulb, thereby making maintenance difficult. .

A glass bottle forming apparatus for forming a parison by a press-and-blow method is also known. In this case, the forming speed has been increased as well as the weight and thickness of the bottle have been reduced. In such a case, it is necessary to instantaneously release air remaining in the rough mold 1 at the time of pressing in press and blow, and conventionally,
Various attempts have been made to escape the air.

Accordingly, an object of the present invention is to provide a baffle device which solves the above-mentioned problems, simplifies the steps required for manufacturing with a simple structure, and can easily form a parison in a short time. And

[0008]

According to the first aspect of the present invention, a semi-molten glass is put into a coarse mold through an opening, the opening is closed with a baffle, and a parison is removed from the semi-molten glass by counter blowing or pressing. The baffle for forming glass bottles is characterized in that the baffle is provided with a slit having a size that allows air to pass therethrough and does not allow the semi-molten glass to pass at the time of counter blowing or pressing.

According to a second aspect of the present invention, a baffle is provided at the opening of the rough mold so as to be openable and closable, and when forming the mouth of the parison in the rough mold, a settle blow is performed through the baffle, and the parison of the parison is formed by counter blow. When forming the bottom, in a glass bottle forming baffle device that presses the bottom of the parison through the baffle, the baffle allows the air for the settle blow to pass, and the semi-molten glass during the counter blow does not pass. Is provided.

[0010] The invention described in claim 3 is the invention according to claim 1 or 2.
Wherein the slit has a knife vent shape.

According to a fourth aspect of the present invention, there is provided a glass bottle forming apparatus for forming a parison from semi-molten glass by counter blowing in a blow and blow method.
A rough mold for containing semi-molten glass, a mouth mold provided at the lower part of the rough mold to form a mouth of a parison, and a semi-molten glass falling into the rough mold when the mouth mold enters the mouth mold. A plunger that is inserted into and forms the mouth of the parison,
A baffle provided on the upper part of the coarse mold, having a slit through which air for settling blows and not passing through semi-molten glass at the time of counter blowing, and means for performing the settle blow through the baffle, Is what you do.

According to a fifth aspect of the present invention, there is provided a glass bottle forming apparatus for forming a parison from semi-molten glass by pressing in a press-and-blow method, wherein a rough mold for containing semi-molten glass and a lower part of the rough mold are provided. A mold for molding the mouth of the parison, and when the semi-molten glass falling into the coarse mold enters the mold, a plunger inserted into the mold to form the mouth of the parison; A baffle provided on an upper portion of the mold and having a slit having a size through which air which escapes from the inside of the coarse mold at the time of pressing and which does not allow semi-molten glass to pass through is provided.

The invention according to claim 6 is the invention according to claim 4 or 5.
Wherein the slit has a knife vent shape.

According to the first to sixth aspects of the present invention,
At the time of settling blow, air is introduced through a slit provided in the baffle above the rough mold. However, this slit has a size that does not allow semi-molten glass to pass through,
During counter blowing, the semi-molten glass does not protrude through the slit.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a preferred embodiment of a glass bottle forming plunger device and peripheral devices thereof, and FIG. 2 shows an enlarged view of the preferred embodiment of the glass bottle forming plunger device of FIG.

In FIG. 1, reference numeral 10 denotes a plunger device. The plunger device 10 has a mouth mold (hereinafter, referred to as “neck ring”) 12 and a plunger 14. Between the tip portion 46 of the plunger 14 and the neck ring 12, a parison P as a semi-finished glass bottle is provided.
Is formed.

A baffle 22, which is a feature of the present embodiment, is provided above the rough mold 20. The baffle 22 is held by a holder 21, and the holder 21 swings via an opening / closing mechanism 23, whereby the baffle 22 is provided on the upper part of the rough mold so as to be openable and closable. When molding the mouth 18 of the parison P, as shown in FIG. 2, the baffle 22 is set on the upper part of the rough mold 20, and the semi-molten glass in the rough mold 20 is settle blown through the baffle 22. (Blow; compressed air) ST is supplied from the settle blow supply means 26.

On the other hand, an operation section 24 for vertically moving the plunger 14 is provided below the rough mold 20 along the upward direction Z1 or the downward direction Z2. The operating section 24 contains a plunger 14, a piston rod 28, a fixing split ring 30 for integrally fixing the plunger 14 and the plunger adapter 28, a spring 32, and the like. The plunger 14 is provided with a groove 14a. One of the fixing split rings 30 is engaged with the groove 14a of the plunger 14, and the other of the fixing split ring 30 is engaged with the groove 28a of the plunger adapter 28.
Are engaged. The lower part of the plunger adapter 28 is connected to the upper end side of a hollow compressed air piston rod 34, and is provided between a ring 34a of the piston rod 34 and a flange 28c of a member 28b located on the outer periphery of the plunger adapter 28. A spring 32 is provided. The piston rod 34 is mounted on the base 38, and the counter blow supply means 40 passes through the piston rod 34 and the hollow member 42 and enters the cavity 121 of the plunger 14 as shown in FIG. The counter blow (Counter Blow; compressed air) CT is supplied to the mouth 18 through the counter blow hole 50 and the hollow hole 14b.

As shown in FIG. 2, a neck ring 12 is attached to a lower portion of the rough mold 20, and a guide ring 44 is attached concentrically in the neck ring 12. The tip portion 46 of the plunger 14 is fitted into a hole 44 a of the guide ring 44, and a counter blow hole 50 is formed in a shoulder portion 48 of the plunger 14.
A sleeve 52 is attached to the plunger 14 so as to surround a portion of the plunger 14 below the shoulder 48.

According to this embodiment, referring to FIG. 2, slit 70 is formed in semi-molten glass receiving surface 22a of baffle 22, preferably by wire cut electric discharge machining. This slit 70 is settle blow S
The air for T is allowed to pass, and the semi-molten glass at the time of counter blow CT is not allowed to pass.

As shown in FIG. 3 (arrow A in FIG. 2), the slits 70 are formed in a meandering shape on the semi-molten glass receiving surface 22a, and these slits 70 are not naturally connected. It is separated at two places W and W. The slit 70 is a knife vent slit. The hole width of the slit 70 is preferably 0.1 mm to 0.1 mm.
5 mm. When the hole width of the slit 70 is smaller than 0.1 mm, the flow of air for the settle blow ST becomes worse, and when the hole width of the slit 70 is larger than 0.5 mm,
This is because semi-molten glass may protrude through the slit 70 during counter blow CT. The shape of the slit 70 is not limited to this meandering shape. For example, the “asterisk type” in FIG.
"G type", (C) "rice type", (D) "H type"
And (E) “S type”, (F) “Z type”, and (G)
, A “+ type” in (H), an “ohm (Ω) type” in (I), and the like.

Next, the operation will be described. Referring to FIG. 1, the baffle 22 is removed, a funnel (not shown) is applied to the position, and the semi-molten glass is dropped from an orifice (not shown). enter. At the same time, when the plunger 14 is raised, the tip portion 46 of the plunger 14
2 into the second guide ring 44. After that, the rough mold 20
The settle blow (compressed air) from the settle blow supply means 26 is applied to the rough mold 20 through the slit 70 of the baffle 22, and the semi-molten glass in the rough mold 20 is placed on the baffle 22. , The tip 18 of the plunger 14, the neck ring 12, and the guide ring 44 cooperate to form the mouth 18.

In the above steps, the slit 70 is provided in the semi-molten glass receiving surface 22a of the baffle 22, so that the settling blow can be performed without using a funnel that has been required conventionally. Since the funnel is not used, the conventional process of FIG.
Can be directly shifted to the step. Therefore, the time required for manufacturing a glass bottle is reduced.

Next, in FIG. 2, when the plunger 14 is lowered by a predetermined distance, a gap is formed between the tip portion 46 of the plunger 14 and the guide ring 44. Through this gap, the counter blow supply means 40
, Counter blow (compressed air) CT is performed.
When the compressed air is blown through the guide member 34, the hollow member 42, the counter blow hole 50 and the like, the parison P
A hollow portion is formed as shown by a broken line (see FIG. 7C in the related art). In this case, the bottom of the parison P is pressed from above by the baffle 22, and the bottom is formed in a predetermined shape.

In the above steps, the baffle 22 presses the bottom of the parison P. In this case, the baffle 2
Since the slit 70 provided in 2 is formed to have a size that does not substantially pass through the semi-molten glass, the semi-molten glass cannot protrude.

In short, the slit 70 is formed in such a size that the air for the settle blow ST is passed therethrough and the semi-molten glass at the time of the counter blow CT is hardly passed therethrough. Can be omitted, and the parison P can be easily formed in a short time.

The above steps correspond to the steps of FIGS. 7A to 7C, and thereafter, go through the steps corresponding to the steps of FIG. 7D, and further go through the steps corresponding to the steps of FIGS. It is taken out as a final glass product in a process corresponding to the process.

FIGS. 5 and 6 show a procedure for forming a parison by a press and blow method as another embodiment. In FIG. 5, after the semi-molten glass is dropped into the rough mold 20, the opening of the rough mold 20 is closed with the baffle 22, and the plunger 114 is raised. As shown in FIG. Displacing the semi-molten glass, the semi-molten glass spreads all over the inside of the coarse mold 20, thereby forming a parison. In the process shown in FIGS. 5 and 6, air remaining in the rough mold 20 must be released to the outside of the rough mold 20. Conventionally, in order to allow air remaining in the rough mold 20 to escape, a split mold slit is provided on the wall of the rough mold 20, but processing on the wall of the rough mold 20 is costly. In addition, depending on the size of the slit, there is a problem that the semi-molten glass protrudes outside the rough mold 20.

According to this embodiment, an apparatus for forming a parison by a press and blow method, for example, as shown in FIG.
Baffle 22 provided with a slit 70 having the shape shown in FIG.
0 is provided), during pressing,
The air remaining in the rough mold 20 can be easily released through the slit 70.

Although the present invention has been described based on one embodiment, the present invention is not limited to the above embodiment. Various embodiments can be modified without departing from the scope of the claims.

[0031]

As described above, claims 1 to 6
According to the invention described in (1), the baffle is provided with a slit having a size that allows air to pass therethrough and does not allow semi-molten glass during counterblowing or pressing, so that settling blow is performed without using a conventionally required funnel. Since a funnel is not used, a part of the conventional process is omitted, so that the time required for manufacturing a glass bottle can be reduced with a simple configuration, and the press and blow operation can be performed. In the case of using the method, there is an effect that air remaining in the rough mold can be easily released through the slit at the time of pressing.

[Brief description of the drawings]

FIG. 1 is a view showing a preferred embodiment of a glass bottle forming baffle device and peripheral devices thereof.

FIG. 2 is an enlarged view showing a preferred embodiment of the glass bottle forming baffle device of FIG. 1;

FIG. 3 is a diagram showing one embodiment of a slit provided in a baffle.

FIGS. 4A to I are diagrams showing another embodiment of a slit provided in a baffle.

FIG. 5 is a cross-sectional view showing another embodiment using a press and blow method.

FIG. 6 is a cross-sectional view showing another embodiment using the press and blow method.

FIGS. 7A to 7G are views showing a conventional blow-and-blow method.

FIG. 8 is an enlarged view of FIG. 7b.

FIG. 9 is an enlarged view of FIG. 7c.

[Explanation of symbols]

 Reference Signs List 12 neck ring (mouth type) 14,114 plunger 18 mouth portion 20 rough type 22 baffle 26 settle blow supply means (compressed gas supply means) 46 tip part 70 slit P parison

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C03B 9/197

Claims (6)

(57) [Claims] 1. A glass bottle forming baffle device for charging semi-molten glass through an opening into a coarse mold, closing the opening with a baffle, and forming a parison from the semi-molten glass by counter blowing or pressing. Is a baffle device for forming glass bottles, characterized in that a slit having a size that allows air to pass therethrough and does not allow the semi-molten glass to pass at the time of counter blowing or pressing. 2. A baffle is provided at the opening of the rough mold so as to be openable and closable. When forming the mouth of the parison in the rough mold, settling blow is performed through the baffle, and when forming the bottom of the parison by counter blow, In a glass bottle forming baffle device for holding the bottom of the parison through a baffle, the baffle is provided with a slit having a size that allows the air for the settle blow to pass and does not allow the semi-molten glass to pass through during the counter blow. Baffle device for forming glass bottles. 3. The glass bottle forming baffle device according to claim 1, wherein the slit has a knife vent shape. 4. A glass bottle forming apparatus for forming a parison from semi-molten glass by counter blow in a blow-and-blow method, comprising: a coarse mold for containing semi-molten glass; and a parison mouth provided below the coarse mold. When the semi-molten glass falling into the rough mold enters the mouth mold, a plunger that is inserted into the mouth mold to form the mouth of the parison, and is provided on the upper part of the rough mold. A glass bottle forming apparatus, comprising: a baffle having a slit having a size that allows air for settling blow and does not allow semi-molten glass during counterblow to pass therethrough; and means for performing the settle blow through the baffle. 5. A glass bottle forming apparatus for forming a parison from semi-molten glass by pressing in a press-and-blow method, wherein a rough mold for containing the semi-molten glass and a mouth of the parison provided below the rough mold are formed. When the semi-molten glass that falls into the rough mold enters the rough mold, a plunger that is inserted into the rough mold and forms a mouth of the parison, and is provided on the upper part of the rough mold, A baffle having a slit having a size that allows air escaping from the inside of a rough mold to pass through during pressing and does not allow semi-molten glass to pass through. 6. The glass bottle forming apparatus according to claim 4, wherein the slit has a knife vent shape.