JPH08198630A - Forming device for glass bottle - Google Patents

Abstract

PURPOSE: To obtain uniform-thickness articles by making it possible to position a baffle provided with plural blow holes in an upper stage and lower stage relative to the opening of a mold and executing settle blow with the upper stage and counter blow by closing the opening with the lower stage. CONSTITUTION: Gob G is charged into the mold 1 in the state of moving the baffle 7 to a retreat position from the opening 2 of the mold 1. Next, the baffle 7 having a solid hollow part and a conical part formed successively in the lower part is moved to the upper position corresponding to the opening 2 of the mold 1 and air is blown from the blow holes C to execute the settle blow and to bring the glass into tight contact with a neckring 4 and a plunger 6. The baffle 7 is then moved to the lower position to close the opening 2 and thereafter, the plunger is withdrawn from the rear neckring 4 and the air is introduced into the glass through the plunger 6 to apply the counter blow thereto, by which parison P is formed. The movement from the settle blow to the counter blow is made possible only by the vertical movement of the baffle 7 by a driving device, by which the time between both stages is remarkably shortened and the glass products having good quality are obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass bottle molding apparatus, and more particularly to improvement of a molding apparatus used in a blow molding process.

[0002]

2. Description of the Related Art In the conventional blow / blow molding method, as shown in FIG.
As shown in (A) to (C), the parison P was formed. First, attach the mouth mold 22 to the lower part of the rough mold 21,
Further, the plunger 24 in the plunger block 23
Is set at the lowermost position of the mouth mold 22, and the funnel 25 having the tapered surface 25a therein is placed on the upper part of the rough mold 21. A gob (molten glass gob) G is charged [see FIG. 6 (A)].

After the gob-in, the baffle 26 is stacked on the upper part of the funnel 25, and air is fed from the air introduction port 26a of the baffle 26 to perform set blow (see FIG. 6B).

When the settle blow is completed, the baffle 26 and the funnel 25 are removed one after another, and the baffle 26 is removed.
The chisel is placed on the upper part of the rough mold 21, and the plunger 24 is lowered to form an air flow passage in the mouth mold 22. In this state, when air is supplied from the plunger block 23 side to perform counter blow, as shown in FIG.
As shown in (C), a predetermined parison P is provided in the rough mold 21.
Is formed. In addition, 27 is a neck ring holder.

In the above process, the gob G after the gob-in
In order to avoid the temperature of the gob G from being reduced by the heat of the gob 21 being taken by the rough mold 21, it is preferable to shorten the time from the goblin to the set blow as much as possible, and also the time from the set blow to the counter blow. The shorter the better.

[0006]

However, between the set blow and the counter blow, as described above, the three operations of removing the baffle 26, removing the funnel 25, and placing the baffle 26 are required. Therefore, it is difficult to shorten the time between both blowing steps. Therefore, in the process of forming the parison P from the gob G, the wall thickness may vary, and a bottle of poor quality may be formed. Also, the baffle 26 and funnel 2
Different moving devices are required to move the units 5, a space is required, and their control is complicated.

The present invention has been made in view of such circumstances.
It is an object of the present invention to provide a glass bottle forming apparatus capable of forming a glass bottle having a uniform thickness with a short time from set blow to counter blow.

[0008]

The present invention has means for solving the above-mentioned problems as follows. That is, in the invention described in claim 1, the rough mold is arranged on the mouth mold having the plunger, the gob is thrown into the rough mold through the gob throwing opening, and then the air is roughened. The glass is brought into close contact with the plunger and the mouth mold by sending it into the mold and applying settle blow, then, by retracting the plunger from the mouth mold and then sending air into the glass through the plunger to add the counter blow. In a glass bottle forming apparatus for forming a parison, the opening for inserting the coarse gob is a circular hollow portion hollowed out in a cylindrical shape, and a tapered shape continuously provided under the circular hollow portion. A hollow baffle having a mortar-shaped portion and fitting into the opening, the baffle having an open top and a cylindrical portion fitted and inserted in the circular hollow portion, and the baffle connected to the lower portion of the cylindrical portion. And a tapered portion that fits tightly into the mortar-shaped portion, and the tapered portion is formed with a plurality of blow holes for cell blow extending obliquely downward from the internal hollow portion and the tapered portion. The upper portion is a shape-shaped portion that does not contact the mortar-shaped portion and the blow hole is opened toward the inside of the rough mold, and the tapered portion is in close contact with the mortar-shaped portion and each of the blow holes is closed. And a drive device for moving the baffle to a lower position and a removal position where the baffle is removed from the opening of the rough mold.

According to a second aspect of the present invention, a drive device for moving the baffle according to the first aspect comprises a cylinder device having a rod for holding and lifting the baffle, and the baffle as the upper part. It is characterized by comprising a regulating means for regulating the position between a position and a lower position, and a cam mechanism for rotating and raising and lowering the rod to move the baffle between the upper position and the removing position.

[0010]

First, the drive device removes the baffle from the opening of the rough mold and moves it to the removal position, and then the gob is thrown into the rough mold from the separately arranged delivery device.

Next, the driving device moves the baffle to the upper position corresponding to the opening of the rough mold, and the set blow is performed at that position.

After that, the baffle is moved to the lower position by the driving device to close the opening of the rough mold, the plunger is retracted from the mouth mold, and then air is introduced into the glass through the plunger to make a counter. A parison can be formed by adding a blow.

In the above-mentioned process, especially during the period from the set blow to the counter blow, the position of the baffle may be simply changed downward by the driving device, and the time between both blow processes can be greatly shortened. . As a result, the thickness can be made uniform.

[0014]

Embodiments of the glass bottle forming apparatus of the present invention will be described below in detail with reference to the drawings. 1 (A) to (C)
Is an explanatory view of the molding process, FIG. 2 (A) is a set blow,
(B) is a cross-sectional view showing a baffle position at the time of counter blow, and FIG. 3 is a configuration diagram of a drive device. In these drawings,
Reference numeral 1 is a rough type, which is configured so as to be divided into a plurality of parts around the central axis thereof, and an opening 2 for inserting the gob G is provided in the upper part thereof, and the opening 2 is a circular shape hollowed out in a cylindrical shape. It has a hollow portion 2a and a tapered mortar-shaped portion 2b that is continuously provided at the lower portion of the circular hollow portion 2a, and the lower portion of the opening 2 has a tapered surface shape that tapers downward. The formed cavities 3 are continuously formed, and a mouth mold 4 is attached to the lower portion of the cavities 3.
Reference numeral 5 is a plunger block, and 6 is a plunger that moves back and forth with respect to the mouth die 4, and these reference numerals 4 to 6 are used.
The member represented by is the same as that of the conventional molding apparatus of this type.

Reference numeral 7 denotes a baffle, which is formed in a hollow shape having an open upper part, and has a cylindrical portion 7a fitted into the circular hollow portion 2a of the opening 2 of the rough mold 1, and a tapered portion 7b tightly fitted into the mortar-shaped portion 2b. And a plurality of blow holes c for cell blow are formed in the tapered portion 7b from the inner hollow portion in a diagonally downward direction, and the baffle 7 is removed from the opening 2. A removal position [not shown, see FIG. 1 (A)] and an upper position where the tapered portion 7b does not abut the mortar-shaped portion 2b and the blow holes c, ... Are opened toward the inside of the cavity 3 [FIG. 1 (B), FIG. 2 (A)] and a lower position where the tapered portion 7b is in close contact with the mortar-shaped portion 2b to close each blow hole c, ... [FIG. 1 (C), FIG. )
In addition, the drive device 10 (see FIG. 3) is used for movement operation.

With this structure, first, the baffle 7
1 is removed from the opening 2 of the rough mold 1 and moved to the removal position [see FIG. 1 (A)], the gob G is thrown into the rough mold 1 from a delivery device (not shown) separately arranged.

Next, the baffle 7 is moved to the upper position corresponding to the opening 2 of the rough mold 1, and the cell blow is performed at that position [see FIG. 1 (B)].

After that, the baffle 7 is moved to the lower position to close the opening 2 of the rough mold 1, the plunger 6 is retracted from the mouth mold 4, and air is introduced into the glass through the plunger 6 to counter it. The parison P can be formed by adding blow.

In the above-mentioned process, especially between the set blow and the counter blow, the position of the baffle 7 may be simply changed downward by about 6 mm by the drive device 10, and the time between both blow processes is greatly shortened. can do. As a result, the wall thickness can be made uniform, and a good quality parison P can be efficiently obtained. By forming the blow holes c for set blow radially on the outer periphery of the lower portion of the baffle 7 at diagonally downward intervals at equal intervals, it is possible to apply even pressure to the gob G and to dent even a bottle with a wide bottom. Can be formed so as not to cause

The drive device 10 will be described with reference to FIG.
4 (A), (B), FIG. 5 (A), (B)], 11
Is a rod that moves up and down and turns, 12A is an air cylinder (cylinder device) that moves the rod 11 up and down, 12A
B is a cam mechanism for turning the rod 11. The air cylinder 12A and the cam mechanism 12B are integrated with each other and are erected on the frame 13 near the rough mold 1.

Reference numeral 14 is an arm fixed to the rod 11,
The baffle 7 can be held at its tip, and air for settling blow is supplied to the baffle 7 from an upper part of the rod 11 via an air passage 11a therein to an air passage (not shown) in the arm 14. It can be supplied.

Reference numeral 15 is a guide dock fixed to the rod 11, 16 is a spacer for positioning the guide dock 15, and an air cylinder 18 fixed on the cylinder head 17 allows a sliding contact surface on the cylinder head 17. The upper part is moved forward and backward with respect to the rod 11, and the advanced position shown in FIGS. 4 (A) and 5 (A), and FIG. 4 (B) and FIG.
It moves to the two retracted positions shown in FIG.

When the spacer 16 is in the advanced position, the guide dock 15 is moved about 6 mm by the spacer 16.
When the baffle 7 is lifted to the upper position in the opening 2 of the rough mold 1 and is in the retracted position, the guide dock 15 is seated on the cylinder head 17 and the baffle 7 is in the lower position. On the other hand, when the rod 11 is raised, the cam mechanism 12B causes the baffle 7 to pivot and move to the removal position. The guide dock 15 and the spacer 1
6 constitutes the regulation means in the present invention.

By arranging such a single driving device 10 in the vicinity of the rough mold 1, a series of operations from setting the baffle 7 to the upper position → moving it to the lower position → removing the baffle 7 is extremely efficient. It can be done well and can save space. Incidentally, in the past, since the baffle and the funnel were moved by different driving devices, a space for providing the two driving devices was required, and two control systems were required, and the control program was complicated. However, the time required for the operation is relatively long, but in the present invention, such a difficulty can be solved and the productivity can be improved by significantly reducing the number of parts as described above. I was able to do it.

[0025]

As described above, according to the glass bottle molding apparatus of the present invention, the baffle having a plurality of blow holes can be set at two positions above and below the opening of the rough mold, and the upper position can be set. Settle blow with to close the opening at the lower position and add a counter blow, so
Unlike conventional cases, it is possible to switch from set blow to counter blow by simply moving the baffle up and down without replacing the funnel or baffle, which can significantly reduce the time between both blow processes. The glass bottle with good quality can be efficiently obtained, and the rotation of the device can be speeded up.

A drive device for moving such a baffle includes a cylinder device for moving the baffle up and down, a cam mechanism for performing a swiveling motion, and a restricting means for restricting the baffle 7 in two positions, up and down. An integrated and compact structure can be achieved, control can be simplified, and the number of parts can be greatly reduced and space can be saved.

[Brief description of drawings]

1A to 1C are explanatory views of a molding process in an embodiment of a glass bottle molding apparatus of the present invention, in which FIG. 1A is when a gob is thrown, FIG. [FIG. 6] is an explanatory view at the time of counter blow.

FIG. 2 (A) is the position of the baffle at the time of settling blow,
(B) is an enlarged sectional view showing the position of the baffle at the time of counter blow.

FIG. 3 is an overall view of a drive device for moving the baffle.

FIG. 4A is a sectional view of the restricting means showing a state in which the baffle is positionally restricted to an upper position, and FIG. 4B is a sectional view of the restricting means with the baffle in a lower position.

FIG. 5A is a plan view of the restriction means showing a state in which the baffle is positionally restricted to an upper position, and FIG. 5B is a plan view of the restriction means with the baffle in a lower position.

6 (A) to 6 (C) are explanatory views of a molding process of a conventional glass bottle molding apparatus. FIG. 6 (A) shows a state where a gob is inserted, (B) shows a cell blow, and (C) shows a counter blow. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Coarse type, 2 ... Opening, 2a ... Circular hollow part, 2b ... Mortar-shaped part, 4 ... Mouth type, 6 ... Plunger, 7 ... Baffle, 7a ... Cylindrical part, 7b ... Tapered part, 10 ... Drive device , 11 ... Rod, 12A ... Cylinder device, 12B ... Cam mechanism, 15, 16 ... Regulation means.

Claims (2)

[Claims] 1. A coarse mold is arranged on a mouth mold having a plunger, and the gob is thrown into the rough mold through an opening for throwing the gob, and subsequently air is sent into the rough mold to settle blow. The glass bottle that forms the parison by adhering the glass to the plunger and the mouth mold, then retracting the plunger from the mouth mold, and then sending air into the glass through the plunger to add a counter blow. In the molding apparatus of, the opening for charging the gob of the rough mold, a circular hollow portion hollowed out in a cylindrical shape,
A hollow baffle having a tapered conical mortar-shaped portion connected to the lower portion of the circular hollow portion and fitted into the opening is inserted into the circular hollow portion with an open upper portion. It has a columnar portion and a tapered portion that is connected to the lower portion of the cylindrical portion and is fitted tightly to the mortar-shaped portion, and the tapered portion has a plurality of diagonally downward portions from the hollow portion inside. With a blow hole for settling blow,
The tapered portion, the upper position where the blow hole does not abut the mortar-shaped portion and is opened toward the rough mold, and the tapered portion is in close contact with the mortar-shaped portion A glass bottle molding apparatus, characterized in that a driving device for moving the baffle is provided at a closed lower position and a removal position where the baffle is removed from the opening of the rough mold. 2. A drive device for moving the baffle, a cylinder device having a rod which holds the baffle and moves up and down, and a restricting means for restricting the position of the baffle between the upper position and the lower position. The glass bottle molding apparatus according to claim 1, further comprising: a cam mechanism that pivotally moves up and down the rod to move the baffle to the upper position and the removal position.