JPS623028A - Apparatus for producing inside screw bottle - Google Patents

Abstract

PURPOSE:To produce an inside screw bottle in high efficiency, by throwing a gob into a rough mold from above, carrying out settle blowing of the gob from above simultaneous to the forming of an inside screw at the bottom of the gob and carrying out counter blow from the bottom. CONSTITUTION:A gob G is thrown into a rough mold 10, a buffle 50 is placed on a funnel 40, and settle blow is carried out from a through-hole of the buffle 50. Simultaneous to the blowing, a screw is formed on the inner surface of the bottom of the gob G by the top part 202 of a plunger 200. The plunger 200 is lowered under rotation, and at the same time, a seal piston 220 is lifted to keep an airtight state between the top surface 222 of the piston 220 and the bottom surface 31 of a guide ring. Counter-blow is carried out through the lower channel 204 of the plunger 200 to form the gob G into the parison Q. The counter-blow molding can be carried out effectively and surely by the airtightness between the top surface 222 of the seal piston and the bottom surface 31 of the guide ring. A parison Q having a screw at the inside of the bottom part (the mouth) can be formed by this process to obtain the objective inside screw bottle.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an apparatus for manufacturing internal screw bottles.

[Conventional technology]

Conventionally, in general, containers of the Wisdom type are sealed with a crown like beer, a pilfer-proof cap like whiskey, or a cork like wine. something is known.

In addition, for high-quality whiskey and brandy, etc., containers are used that are sealed with a stopper that has a special shape or a specially decorated head, and such containers often have a way to drain the liquid after pouring. It is also well known that bottles with wide mouths are used to improve the shape of the bottle and the balance with the stopper shape and decoration.

In bottles with wide mouths like this, it is not possible to install a screw on the outside of the bottle mouth and screw the stopper into the bottle, so until now, bottles with a cork attached to the sealing part of the stopper have been used. It's here.

However, cork is a natural product, and it is becoming increasingly difficult to obtain consistently high quality cork due to resource considerations. If the quality of the cork deteriorates, cork debris may get mixed into whiskey, brandy, etc., or the contents may seep out of the bottle, seriously affecting the overall quality of the product. Become.

In order to solve this problem, a bottle has been proposed in which the bottle opening has a screw on the inside and a stopper with a screw on the outside is screwed together. However, no apparatus was known for efficiently manufacturing such inner-bottomed bottles.

[Problem that the invention seeks to solve]

The problem to be solved by the present invention is to provide an apparatus for efficiently manufacturing such internal screw bottles.

Generally, in the bottle manufacturing process where a lump of molten glass is inflated with compressed air and molded, it is extremely difficult to process the inside of the bottle spout, and it is also difficult to process the inside of the bottle spout. To remove the mold inserted inside the bottle mouth,
Because it requires a complicated mechanism, it has been thought that it would be almost impossible to manufacture inner-lined bottles with a simple machine, taking into consideration the temperature and flow characteristics of glass.

As a result of intensive research, the inventors of the present invention have developed a new device that utilizes the temperature and flow characteristics of glass, and are capable of forming internal threads, handling molds, and forming bottles with one device. , my first time using an inner bottle! ! It was successfully created.

[Means for solving problems]

In order to achieve the above object, the present invention includes a rough mold for accommodating a gob (molten glass gob) and molding it, and a bottle opening provided below the rough mold so as to be able to come into contact with and separate from the rough mold. It consists of a mouth mold for molding the outside, and a plunger block that is provided below the mold so that it can move toward and away from the mouth mold.The plunger block has a screw on its upper outer periphery and rotates up and down. A moving plunger, a seal piston that is arranged concentrically with the plunger and moves up and down, and a drive mechanism for driving the plunger are provided.

This drive mechanism may be of any type, such as one using electricity such as a motor, or one using hydraulic pressure or pressurized air. However, when electricity such as a motor or hydraulic pressure is used, it is necessary to newly wire a power line or install a hydraulic device. Therefore, it is preferable to use a drive mechanism that uses pressurized air that is already piped into the bottle making factory.

[Effect]

As shown in FIG. 4(A), first, the mouth mold 20, the rough mold 10
is closed and the plunger 200 is raised, and the gob (molten glass gob) G is introduced into the rough mold 10 through the funnel 40. Next, as shown in FIG. 4(B), a baffle 50 is placed on the funnel 40, and a Serazuru blow is performed through the through hole of the baffle 50. At this time, the plunger 2
The upper part 202 of the 00 forms a thread on the inner surface of the lower end of the gob (which becomes the mouth of the bottle). Thereafter, the plunger 200 is lowered as shown in FIG. 4(C). At this time, the plunger 200 descends while rotating at the same pitch as the threaded portion 202, so it descends without damaging the threads formed on the inner surface of the lower end of the gob. At the same time, the seal piston 220 rises to maintain an airtight state between the seal piston upper end surface 222 and the guide ring lower end surface 31.

Next, a counter blow is performed through the flow path 204 at the bottom of the plunger 200 to form the gob G into a parison Q. At this time, an airtight state is maintained between the upper end surface 222 of the seal screw and the lower end surface 31 of the guide ring, so the pressure air for counter blow does not leak.
A counter blow is performed effectively and reliably. In this way, a parison Q having a thread on the inner surface of the lower end (mouth) is formed. After that, parison Q is formed into a bottle using a known technique.
Shape an inner-lined bottle.

Hereinafter, the operation and effect of each member will be explained in detail using examples.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 4, numeral 10 is a rough mold in which the gob G is accommodated, and although not shown in detail, it has a structure that can be divided into an appropriate number of parts and opened and closed. Reference numeral 20 designates a mouth mold provided below the rough mold 10 so as to be able to move toward and away from the rough mold 10, and 30 represents a guide ring. 40 is a funnel that is detachably provided above the rough mold 10, and 50 is a baffle.

Incidentally, each of the members indicated by 10 to 50 is no different from the structure of a conventional bottle manufacturing apparatus.

Reference numeral 60 denotes a plunger block which is provided below the mouth mold 20 so as to be freely retractable and retractable, and as shown in FIGS. The lower block 80 houses a drive mechanism 90 that drives the plunger 200.

First, the drive mechanism 90 mainly includes the air cylinder 10.
0, a piston 1101, a chain nut 120, a screw shaft 130, and a journal 140.

That is, a generally hollow-shaped piston 110 is provided in the air cylinder 100 (see FIGS. 1 and 2), and an upper flange-like body 111 of the piston 110 is provided with a piston 110.
A change shaft 120 that moves up and down integrally with the shaft 0 is fixed. A screw shaft 130 is vertically inserted through the air cylinder 100 and the piston 110, and a threaded portion 131 (right-handed thread) having a predetermined length from the upper end is formed on the outer peripheral surface of the screw shaft 130. , is configured to be screwed into the change nut 120. Reference numeral 132 denotes a rond portion extending from the threaded portion 131, and is fitted into the cylindrical body 133. Further, an engaging convex portion 134 is formed on the second end surface of the threaded portion 131.

Incidentally, the cylinder 100 and the piston 110 are eccentric to the screw shaft 130. Therefore, the piston 11
When the screw shaft 130 is moved up and down in the vertical direction, the screw shaft 130 rotates to the right or left because the change shaft 120 fixed to the piston 110 and the threaded portion 131 are screwed together. At this time, since the piston 110 and the screw shaft 130 are eccentric, the piston 110 does not rotate due to reaction force, and only the screw shaft 130 performs rotational movement.

The journal 140 has concave grooves 141 and 142 in the same direction at its lower and upper parts, and the engagement protrusion 134 of the screw shaft 130 is fitted and locked into the lower concave $141. 150 is a bearing that holds the lower part of the screw shaft 130.

Next, the plunger 200 has threaded parts 201 and 202 at its lower and upper parts, and both threaded parts 201 and 2
The pitch P of 02 is equal. Reference numeral 203 denotes a locking convex portion that is stepped on the lower end surface of the lower threaded portion 201, and is configured to be fitted and locked into the recess a142 above the journal 140.

Reference numeral 210 denotes a nut-shaped body having a female threaded part 211 on its inner periphery that is screwed into the lower threaded part 201 (right-handed thread) of the plunger 200, and its flange part 212 is connected to the upper block 70.
is fixed to a pedestal 71.

Therefore, via the journal 140, the screw shaft 13
By transmitting the zero rotation to the plunger 200, the plunger 200 rotates in the same direction as the journal 140 and moves up and down. Since the threaded portion 201 is formed with a right-handed thread, when the piston 110 rises, the screw shaft rotates to the left when viewed from the U direction in FIG. 1, so the plunger 200 rotates to the left. while moving downward.

Conversely, when the piston 110 is lowered, the plunger 20
0 moves upward while rotating to the right.

A seal piston 220 is provided around the outside of the plunger 200 and the nut-shaped body 210, and is provided in the space 72 in the upper block 70 so as to be vertically movable. A compression spring 230 is interposed between the lid 75 and the flange plane 221 of the seal piston 220, and the seal piston 220 is pushed downward by the biasing force of the spring 230. 240 and 250 are sealing members.

Inside the plunger block 60, there is provided pressure air piping for driving the drive mechanism 90 and seal piston 220 and for counter blowing. That is, 310 raises the piston 110, so
Therefore, 101 is a pressure air inlet for lowering the plunger 200 (hereinafter referred to as plunger lowering), and is an opening opened at the bottom of the air cylinder 110.

The pressurized air from the plunger lowering pressurized air inlet 310 is branched and introduced into the space 76 of the upper block 70 through a flow path 81 in the lower block 80 and a flow path 73 in the upper block 70. It is configured like this. Therefore, when pressurized air at a predetermined pressure is supplied through the plunger lowering pressure air inlet 310, the plunger 200 is lowered and the seal piston 220 is raised so that its upper end surface 222 is connected to the lower end surface 30 of the guide ring 30. , and a seal is created.

82 is a flow passage for feeding pressurized air into the air cylinder 100 to raise the plunger 200, 102 is an opening opened in the air cylinder 100, and 320 is a pressure air inlet for raising the plunger. be.

83 is a flow path on the lower block 80 side that supplies pressurized air for applying counter blow, and 330 is a pressure air inlet for counter blow. A flow path 74 is formed, and the plunger 200 is configured so that air is guided toward the mouth mold 20 through the flow path 204 inside the plunger 200.

In the above embodiment, there are three pressure air supply lines, but the line for lowering the plunger and the line for raising the seal piston may be separated to provide four lines. In this case, it is necessary to synchronize the air supply timings of both lines.

Next, the operation of the apparatus configured as described above will be explained. Assuming that the piston 110 is now at the bottom dead center within the cylinder 100, the plunger 200 is held at the top dead center. In this state, the gob G is introduced into the crude product 10 through the funnel 40 (see FIG. 4(A)).

Next, the baffle 50 is placed on the funnel 40, and a predetermined pressure of air blow is applied from the baffle 50.

As a result, an internally threaded portion with a pitch P is formed on the inner surface by the upper threaded portion 202 of the plunger 200 (see Fig. 4).
See B).

When the above-mentioned safe blow is completed, pressurized air for lowering the plunger is introduced into the air cylinder 100 from the pressure air introduction port 310 for lowering the plunger. This causes the piston 110 to rise, and this rise also causes the change nut 120 to rise, causing the screw shaft 130 to rotate to the left.

This rotation of the screw shaft 130 is transmitted to the plunger 200 via the journal 140.
Since the lower threaded portion 201 of 00 is threadedly engaged with the female threaded portion 211 of the nand-shaped body 210, the plunger 200 descends while rotating. Here, since the pinch of the female threaded portion 211 of the nand-shaped body 210 and therefore the pitch of the lower threaded portion 201 of the plunger 200 is equal to the pitch of the upper threaded portion 202 of the plunger 200, the plunger 20
0, the plunger 200 separates from the internal threaded portion without damaging the internal threaded portion formed on the inner periphery of the lower end of the gob G.

On the other hand, the pressurized air for lowering the plunger is branched and introduced into the space 76 of the upper block 70 through the flow passage 81.73. As a result, the seal piston 220 is moved upward against the biasing force of the spring 230, and its upper end surface 222 comes into contact with the lower end surface 31 of the guide ring 30, and the inside of the mouth mold 20 and the upper block 70 are brought into contact with each other. It communicates with the inside in a completely airtight manner.

Here, the funnel 40 and the baffle 50 are removed,
Only the buff full 50 is provided at a predetermined position in the upper opening of the rough mold 10. After doing this, when air at a predetermined pressure is supplied from the counter blow pressure air inlet 330, the air passes through the flow path 83.74.204, and further flows through the plunger 2.
The gob G is blown into the crude product 10 as a counter blow through the gap between the upper part of the gob 00 and the mouth mold 20, and the gob G is formed into a parison Q (see FIG. 4(C)). At this time, the seal piston 220 Since the airtight state is maintained between the upper end surface 222 and the lower end surface 31 of the guide ring, pressurized air for counter blowing flows into the plunger 20.
Without leaking from the gap between the upper part of 0 and the mouth mold 20,
A counter blow is performed effectively and reliably.

When the counter blow is completed, the pressure air for lowering the plunger is cut off. As a result, the seal piston 2
20 is again lowered by the biasing force of the spring 230 and returned to its original position. Meanwhile, the plunger 200 maintains the lowered position.

Here, the rough mold 10 is opened and the parison Q is placed in the mouth mold 20.
After being transferred to a finishing mold (not shown) by an invert device (not shown), the mouth mold 10 is returned to its original position and the rough mold is closed. The parison Q in the finishing mold is formed into a bottle by a known technique, producing a bottle with an internal thread at the mouth.

After that, the plunger raising pressure air inlet 320
When pressurized air is introduced from the piston 110, the piston 110 descends.
The screw shaft rotates clockwise. This rotation is caused by journal 14
0 to the plunger 200, and the plunger 200 rotates and rises toward the mouth mold 20, and waits for the next gob G to be inserted while remaining stationary at the top dead center.

From now on, repeat this operation.

〔Effect of the invention〕

As described in detail above, the present invention includes a coarse mold in which the gob is accommodated, a mouth mold provided below the coarse mold so as to be able to move toward and away from the coarse mold, and a vaginal orifice mold provided below the mouth mold. The plunger block has a threaded portion on its upper outer periphery and moves up and down while rotating, and the plunger block is arranged concentrically with respect to the plunger. Furthermore, since it is equipped with a seal piston that moves up and down and a drive mechanism for driving the plunger, it is possible to form an internal thread on the inner surface of the container mouth, which was impossible with conventional devices of this type. It became.

Moreover, according to the present invention, the mechanism for converting linear motion into rotary motion can be configured extremely easily, so that a small and simple bottle manufacturing device can be obtained, and counter blow can be effectively achieved by the action of the seal piston. It can be done reliably.

By using a flat or inner-lined bottle, it is possible to use a plastic stopper, etc., while retaining a sense of luxury, and it is therefore possible to use a highly accurate and inexpensive stopper. Also, the plugging speed is significantly improved, thereby improving the filling speed and improving productivity.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view of the main part, FIG. 2(A) is an exploded perspective view of the plunger and its drive mechanism, and FIG. 2(B) is an assembled perspective view. Figure, Figure 2 (
C) is a partial cross-sectional front view of the plunger, FIG. 3(A),
3(B) shows the air piping system, FIG. 3(A) shows the plunger in a lowered state, and FIG. 3(B) shows the plunger in a lowered state. Figure 4 (A), (B
) and (C) are operation explanatory diagrams. DESCRIPTION OF SYMBOLS 10... Rough mold, 20... Mouth type, 60... Plunger block, 90... Drive mechanism, 200... Plunger, 201° 202... Threaded part, 220...
Seal piston, G...gob. Figure 1 3 (A) (B)

Claims (1)

[Claims] A rough mold in which the gob is accommodated, a mouth mold provided below the rough mold so as to be able to move toward and away from the coarse mold, and a plan provided below the mouth mold so that it can move toward and away from the mouth mold. a plunger that has a threaded portion on its upper outer periphery and moves up and down while rotating; a seal piston that is arranged concentrically with the plunger and moves up and down; and the plunger. An apparatus for producing an internally threaded bottle, characterized in that it is provided with a drive mechanism for driving the bottle.