JP2000289097A - Molding method and apparatus for filling container with content simultaneously with molding of container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a method and apparatus capable of filling a container with content at a position where a parison is held by closing a mold without moving the mold laterally or obliquely simultaneously with the molding of the container. SOLUTION: A content filling pipe 3 is provided to the die head 1 of a blow molding machine in a freely up and down movable manner in parallel to an air supply channel 2 and the ejection port 3a provided to the leading end of the pipe 3 is arranged so as to be positioned within the parison extruding port 4 of the die head 1 and, at first, a parison P is molded by a mold so as not to close the mouth part of a container molded by a main body mold and, at the same time, the pipe 3 is allowed to fall to fill the molded container with content from the ejection port 3a and, subsequently, the throat 3 is allowed to retreat upwardly to seal the mouth part of the container in a blind lid state by a sealing mold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for molding a container mainly filled with liquids, powders, granules, etc. of pharmaceuticals and the like, and in particular, to maintaining a sterile state simultaneously with the molding of the container. The present invention relates to a blow molding method and an apparatus for simultaneously filling a container with contents to be packaged and sealing at the same time.

[0002]

2. Description of the Related Art Heretofore, means for filling a container with a liquid simultaneously with the formation of the container by a blow molding machine has been known.
This known means moves the mold into a sterile room beside or diagonally below the die head with the parison extruded from the molding die head sandwiched by the mold, and blows air at a retracted position in the sterile room. Blow molding. On this occasion,
After opening the mouth of the container to be molded while maintaining the molten state, inserting a filling needle into this and filling the container with liquid,
The mouth of the container is sealed with another mold.

[0003] This conventional means is suitable for mass production, but the mechanism is complicated and large, and in particular, a complete sterile room must be provided and liquid is filled in the room. However, it is not suitable for small and medium-sized production. On the other hand, at the present time when a variety of products are required due to diversification of demand, an inexpensive device having a simple structure is expected.

[0004]

Accordingly, the present invention does not require the mold to be moved sideways or obliquely, does not require any complicated equipment, and does not require a special sterile room. A new method that allows the container to be filled simultaneously with the molding of the container at the position where the container forming mold is closed and the parison is sandwiched, and the container can be sealed under aseptic conditions, and The main purpose is to provide the device with a simple mechanism and at low cost.

[0005]

To achieve the above object, the present invention takes the following technical measures. That is, in the molding method according to the present invention, a straw 3 for filling contents is provided in a die head 1 of a blow molding machine so as to be vertically movable in parallel with an air supply passage 2, and a spout 3a at the tip of the straw is connected to the die head 1 by the die head 1. Is arranged so as to be located in the parison extrusion port 4 of the above. First, when the parison P is molded by the mold 5, the mouth of the container molded by the main body mold 5a is molded so as not to be closed, At the same time, the straw 3 is lowered to fill the contents into the container to be molded from the spout 3a, and then the straw 3 is retracted upward and the container opening is sealed in a blind lid shape with the sealing mold 5b. Features.

According to the present invention, a die head 1 in a blow molding machine is used as an apparatus for achieving this molding method.
A straw 3 for filling the contents is provided so as to be movable up and down in parallel with the air supply passage 2 provided at the bottom of the die head. The spout 3a at the tip of the straw is arranged so as to be located within the parison extrusion port 4 of the die head 1. In addition, the straw 3 is configured to move up and down in the mold in correspondence with the container molding by the mold 5.

As another apparatus, a plurality of straws 3 for filling contents, which can be moved up and down in parallel with the air supply passage 2, are provided at predetermined intervals in a die head 1 of a blow molding machine. Are arranged so that the spouts 3a, 3a,... Of the respective straw tips are located in the parison extrusion port 4 of the die head 1, and each of the straws 3, 3,. It is configured to move up and down in a mold corresponding to molding.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The straw 3 is preferably arranged concentrically in an air supply passage 2 as shown in FIGS. 1 and 2, but as shown in FIG.
Apart from this, it is also possible to provide them in parallel.

The air supply passage 2 provided in the die head 1 of the blow molding machine referred to here and the content filling straw 3 provided in parallel with the passage so as to be vertically movable are formed as a pair of containers. It is preferable to provide two pairs, three pairs, five pairs or more pairs corresponding to the number of molds 5A forming the mold 5A, and to move the respective straws 3 up and down simultaneously in synchronization. . In addition, as another means, regardless of the number of straws 3 and the number of molds 5A, the air supply passage 2 provided in the die head 1 is provided as only one for each parison P. You can also.

In the present invention, the mold 5 is a main body mold 5a for molding a container without closing the mouth, and the container molded in the main body mold 5a is filled with contents by the straw 3. After that, a seal mold 5b for closing the mouth of the container in the mold 5a in a blind lid-like manner.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are views for explaining a molding apparatus according to a first embodiment. 1 and 2, reference numeral 1 denotes a die head portion of a molding apparatus according to the present invention. The die head 1 is provided with an orifice for extruding the parison P, that is, a parison extrusion port 4, and an air supply passage 2 that opens inside the parison extrusion port 4 and supplies air to the extruded parison. . This air supply passage 2
Extends vertically inside the die head 1 and is connected to the air supply pipe 6 at the upper end.

A straw 3 for filling the contents is arranged inside the air supply passage 2 coaxially with the passage. The straw 3 is connected at its upper end to an elevating mechanism 7, and is formed so as to move up and down in the mold corresponding to container molding by the mold 5 described later. The spout 3a at the tip of the straw
Is disposed so as to be located at the center of the parison extrusion port 4 of the die head 1.

The mold 5 used in the present invention comprises a main body mold 5a for molding a container in an opening form which does not close the mouth, and a container molded in the main body mold 5a, which is covered by the straw 3. After filling the contents of the package, for example, a drug solution, a seal mold 5b for closing the mouth of the container in a blind lid shape. Reference numeral 5c denotes a supporter that surrounds the outer peripheral surface of the extruded portion of the parison P and maintains a parison shape, 8 denotes a parison adjustment adjuster, and 9 denotes a ring 10 that forms the parison extrusion port 4. Show bolts for Reference numeral 11 denotes a support ring for preventing the straw 3 from swinging and having an air passage hole.

First, the parison P of FIG. 2 is pushed downward as shown in FIG. When the parison P is formed into a container with the mold 5 from this state, as shown in FIG. 4, the container body is formed by first closing the main body mold 5a so as not to close the mouth of the formed container. At the same time, the straw 3 is lowered, and the contents are filled into the container in the mold from the spout 3a. Next, as shown in FIG. 5, the straw 3 is retracted to the upper original position, and the mouth of the container is sealed in a blind lid shape with a sealing mold 5b.
Thereafter, the two dies 5a and 5b are opened, and the container B filled with the contents is taken out. This operation may be repeated sequentially to form a continuous molding. The contents-filled container thus molded is filled with the contents in the parison P extruded from the die head 1 of the molding machine, and the opening of the container is sealed. By sterilizing only the molding air supplied to the
Aseptic contents-filled containers can be obtained. In addition,
The container B taken out of the mold is shipped after being trimmed such as deburring, but the deburring operation is easy because the containers are individually formed independently.

FIG. 7 shows a second embodiment. Although the straw 3 shown in the first embodiment is shown as being concentrically arranged in the air supply passage 2 as shown in FIGS. 1 and 2, the straw 3 shown in FIG. 3 is
It has a structure in which it is formed independently and parallel to the air supply passage 2. Even with such a structure, the same content-filled container as in the above embodiment can be obtained.

Although not shown, the straw 3 is
The number of straws 3 required for individually filling each container is not limited to one for each container. For example, when one container is filled with different kinds of fillers.
May be arranged adjacent to each other.

FIGS. 8 and following figures show embodiments in which a plurality of contents-filled containers can be obtained at the same time. 8 to 10 show one embodiment as a third embodiment. In this embodiment, the parison extrusion port 4 formed in the die head 1 of the blow molding machine has an oblong shape in plan view as shown in FIG. 9, and the content is filled concentrically with the air supply passage 2 in this oval. And two pairs of straws 3 are provided at predetermined intervals, and the container forming die 5A also has two container forming cavities C, C. Note that the tip spouts 3a, 3a of these two straws 3, 3 are located on the parison extrusion port 4 side of the die head 1, and the distance between the two straws 3, 3 is two containers shown in FIG. Mold 5
The arrangement of the individual cavities C in C, A, and the distance between the cavities is the same as in the first embodiment.

Thus, in this embodiment, two parcels P can be obtained with one parison P. By increasing the number of cavities C of the mold 5A and the number of straws 3 corresponding to the cavities C, three or more content-filled containers can be obtained at one time. Further, the shape of the parison extrusion port 4 formed in the die head 1 in plan view is not limited to an oval shape, and may be another shape, for example, a gourd shape shown in FIG. Good.
Further, by keeping two cavities C, C in the mold 5A shown in FIG.
A double container can also be obtained.

In the fourth embodiment shown in FIG. 12, only one air supply passage 2 is formed at the center of the parison extrusion port 4 formed in the die head 1 of the blow molding machine, and the air supply passage 2 is disposed on both sides of the air supply passage 2 therebetween. This is a structure in which two straws for filling contents 3 and 3 are provided. Others are the third
The structure is the same as that of the embodiment.

The fifth embodiment shown in FIG. 13 and FIG.
In the blow molding machine, two parison extrusion ports 4 and 4 are independently arranged and formed in a die head 1, and a pair of contents-filling straws 3 are coaxially arranged with the air supply passages 2 in the respective central portions. This is a structure formed and formed. In other respects, the structure is in accordance with the third embodiment.

The parison extrusion ports 4, 4 formed individually and independently on the die head 1 shown in the fifth embodiment have a shape in which adjacent portions are partially continuous as shown in FIG. 15, for example. It is a letter shape of a plan view shape 8. In this case, it is suitable for obtaining a double container in which two containers are continuously formed.

Although the typical embodiments of the present invention have been described above, the present invention is not necessarily limited to the structures shown in these embodiments. For example, the object to be filled in the container at the same time as the molding is not limited to a liquid, but may be a powder or a granule, and is not limited to one type but may be two or more types. In addition, it is needless to say that the present invention can be carried out by appropriately modifying the present invention within the range having the above-mentioned constitutional requirements and having the following effects.

[0023]

As described above in detail, according to the molding method of the present invention, the molding of the container can be carried out in the container molding position without moving the mold sideways or obliquely downward with the parison sandwiched. The contents can be filled at the same time, and the container opening after the contents can be sealed at the same time.
In particular, the filling operation of the contents can be performed under a sterile condition in the parison, and furthermore, the container can be hermetically sealed as it is, so that the container filled with the contents can be provided at an extremely low cost. Can be expected.

Further, in the molding apparatus, complicated mechanisms such as a mold transfer mechanism can be omitted, and an aseptic chamber requiring an expensive and large apparatus is not required. Since it is incorporated in the inside, there is an effect that the appearance is smart and the entire molding and filling apparatus can be made compact.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a die head portion of a molding apparatus according to a first embodiment.

FIG. 2 is a longitudinal sectional view showing a state in which a parison is extruded from a die head of the apparatus.

FIG. 3 is a longitudinal sectional view showing a first stage of a molding method using the same device.

FIG. 4 is a longitudinal sectional view showing the second stage.

FIG. 5 is a vertical sectional view showing a third stage.

FIG. 6 is a vertical sectional view showing the fourth stage.

FIG. 7 is a longitudinal sectional view of a portion corresponding to FIG. 1 showing a second embodiment.

FIG. 8 is a sectional view of a portion corresponding to FIG. 1 showing a third embodiment.

FIG. 9 is a transverse sectional view showing the die head of the embodiment.

FIG. 10 is a transverse sectional view showing a molding die of the same embodiment.

FIG. 11 is a transverse sectional view showing a modified example of the die head of the embodiment.

FIG. 12 is a longitudinal sectional view of a portion corresponding to FIG. 1 showing a fourth embodiment.

FIG. 13 is a longitudinal sectional view of a portion corresponding to FIG. 1 showing a fifth embodiment.

FIG. 14 is a transverse sectional view showing the die head of the embodiment.

FIG. 15 is a transverse sectional view showing a modification of the die head of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die head 2 Air supply passage 3 Contents filling straw 3a Straw outlet 4 Parison extrusion port 5 Mold 5A Mold 5a Body mold 5b Seal mold P Parison

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 28, 2000 (200.4.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

To achieve the above object, the present invention takes the following technical measures. That is, in the molding method according to the present invention, a straw 3 for filling contents is provided in a die head 1 of a blow molding machine so as to be vertically movable in parallel with an air supply passage 2, and a spout 3a at the tip of the straw is connected to the die head 1 by the die head 1. Is arranged so as to be located in the parison extrusion port 4 of the above. First, when the parison P is molded by the mold 5, the mouth of the container molded by the main body mold 5a is molded so as not to be closed, Simultaneously molds main body mold 5a
In this state, the straw 3 is lowered to fill the container into which the contents are to be formed from the spout 3a, and then the straw 3 is retracted to the upper original position , and the mouth of the container is sealed with the sealing mold 5b. And sealed in a blind lid shape.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

First, the parison P of FIG. 2 is pushed downward as shown in FIG. When the parison P is formed into a container with the mold 5 from this state, as shown in FIG. 4, the container body is formed by first closing the main body mold 5a so as not to close the mouth of the formed container. At the same time, the main body mold 5a is held at the molding position.
In this state, the straw 3 is lowered, and the contents are filled into the container in the mold from the spout 3a. Next, as shown in FIG. 5, the straw 3 is retracted to the upper original position, and the mouth of the container is sealed in a blind lid shape with a sealing mold 5b. Thereafter, the two dies 5a and 5b are opened, and the container B filled with the contents is taken out. This operation may be repeated sequentially to form a continuous molding. The contents-filled container thus molded is filled with the contents in the parison P extruded from the die head 1 of the molding machine, and the opening of the container is sealed. By sterilizing only the molding air supplied to the container, a content-filled container in an aseptic state can be obtained. The container B taken out of the mold is shipped after being trimmed such as deburring, but the deburring operation is easy because the containers are individually molded.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E050 AA02 AB04 BA01 BA03 DA02 DF01 FB01 FB07 GC02 4F202 AG07 AH55 CA15 CB01 CK52 CK84 CL01 4F208 AG07 AH55 LA01 LA07 LB01 LG22 LJ09 LN05 LN08 LN09 LW01 LW23 LW50

Claims (5)

[Claims] 1. A straw (3) for filling contents in a die head (1) of a blow molding machine in parallel with an air supply passage (2).
Is provided so that it can be moved up and down.
Is arranged in the parison extrusion port (4) of the die head (1), and when the parison (P) is first formed by the mold (5), it is formed by the main body mold (5a). The container is molded without closing the mouth, and at the same time, the straw (3) is lowered to fill the container to be filled with the contents from the spout (3a), and then the straw (3) is retracted upward. A method of filling the contents simultaneously with the molding of the container, wherein the container opening is sealed in a blind lid shape with a sealing mold (5b). 2. A straw (3) for filling contents is vertically movable in parallel with an air supply passage (2) provided in a die head (1) of a blow molding machine. 3a) is the parison extrusion port (4) of the die head (1)
The straw (3) is arranged so as to be located in the mold (5).
A molding device which is formed to move up and down in a mold in correspondence with container molding by the above. 3. A die head for a blow molding machine.
In addition, a plurality of content filling straws (3) which can be moved up and down in parallel with the air supply passage (2) are provided at predetermined intervals, and the spouts (3
a), (3a)... are arranged so as to be located in the parison outlet (4) of the die head (1), and each of these straws (3), (3).
Is a molding device formed to move up and down in a mold in correspondence with container molding by a mold (5A) for simultaneously molding a plurality of containers. 4. A main body mold (5a) in which the molds (5) and (5A) form a container without closing a mouth, and the main body mold (5a).
4. The molding apparatus according to claim 2, further comprising a sealing mold (5b) for closing a container mouth portion in a blind lid shape after the container is filled with the contents by the straw (3). . 5. The molding apparatus according to claim 2, wherein the straw (3) is arranged concentrically in the air supply passage (2).