KR950000618B1 - Method of and apparatus for blow shaping grass articles - Google Patents

Abstract

The penetration hole (14) is formed in a top wall and to correspondingly fit a hole for introducing decoration. A pin (16) is thrusted with an end into a bottom surface of blow head (15) for the other to fit a penetration hole (14). A length of pin (16) equals the sum of length of the penetration hole and length of the hole for introducing decoration. When in process of F step, the blow head (15) is equipped on blow mold (13) and pin (16) thrusted into a blow head is inserted to the penetration hole (14). A final molding product is made by a usual method.

Description

Blow molding method and apparatus for forming decorative attachment groove

1 (a)-(g) are process drawings showing a blow molding process of a general container in which a final molded product is completed and transferred from injection of a molding agent, and an apparatus for each process.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line A-A of FIG. 1 (d) to show the cross section of the blow mold.

4 is a cross-sectional view corresponding to FIG. 1 (f) as a diagram illustrating a molding process of a final molded article in which a decoration attachment groove is formed by using a blow mold and a blowhead as a first embodiment of the present invention.

FIG. 5 is a cross-sectional view corresponding to FIG. 1 (f) showing a forming process of a final molded article in which a decoration attachment groove is formed by using a blow mold and a blow head as a second embodiment of the present invention. FIG.

* Explanation of symbols for the main parts of the drawings

1 molding agent 2 molding agent inlet

3: blank mold 4: neck ring

5: free blow nozzle 6: protrusion bundle

7: Settle Blow Nozzle 8: EB Molded Products

9: blow mold 9-1: lower mold

10: blowhead 11: final molded product

12: forceps 13: blow mold (of the first embodiment of the present invention)

14 through hole 15 blowhead (in the first embodiment of the present invention)

16: pin 17: the final molded product

18: blow mold (of the second embodiment of the present invention)

19: 3-stage through hole 20: Pin

21: spring

[Field of Invention]

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a blow molding method and apparatus for molding a glass container such as a cosmetic container and a detergent container, and more particularly, to a blow molding method for a container and a device for forming a groove for attaching a decoration to a shoulder of the container. will be.

[Background of invention]

Recently, the aesthetic sense of consumers is increasing due to the improvement of living standard, and in order to comply with it, the decoration of glass containers such as cosmetic containers and detergent containers is increasing.

The method of attaching a ornament to a container conventionally used was to adhere the ornament to the container using only an adhesive.

However, when the decoration is attached using the adhesive as described above, the adhesive strength of the adhesive is weakened with time, and the decoration is lost from the container, resulting in a bad appearance.

[Purpose of invention]

An object of the present invention to solve the above problems is to provide a blow molding method and apparatus for forming a groove in the shoulder of the container so that the decoration can be attached semi-permanently in the glass container.

[Summary of invention]

In order to achieve the above object, the present invention provides a blow molding method of a glass container from a through-hole formed in an upper wall of a blow mold to form a decorative attachment groove on a shoulder of the final molded product, from the through-hole to the internal space of the blow mold. After the pins are protruding, the final molded article is formed by blowing air into the interior of the preform. In the blow mold and blowhead of the first embodiment of the blow molding apparatus, the blow molding apparatus is implemented. Through-holes are formed in the upper wall at the position where the blow mold corresponds to the decorative attachment groove of the final molded product, and the blowhead is pinned at the bottom of the position where the blow mold corresponds to the through-hole: The blow mold of the second embodiment is formed on the upper wall at a position corresponding to the decorative attachment groove of the final molded product. A three-stage through hole is formed, and a pin and a spring in which the pin portion and the head are integrally formed in the three-stage through hole.

Detailed description of the invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In general, the blow molding method and apparatus for producing a glass container is made as follows, as shown in Figures 1 (a)-(g).

First, as shown in Fig. 1 (a), the molding agent 1 of the glass, which has been melted and becomes sticky, is injected into the blank mold 3 through the upper molding agent inlet 2. (Step A process). A neck ring 4 and a pre-blow nozzle 5 are formed under the blank mold 3, and the molding agent 1 is formed inside the pre-blow nozzle 5. A protrusion bundle 6 for forming a groove to be used as an air inlet in the lower portion is configured to be movable.

As shown in FIG. 1 (b), a set-blow nozzle is provided in the molding agent inlet 2, and the inside of the blank mold 3 is opened from the top through the set blower nozzle 7. Air is blown into the mold 1 to bring the molding agent 1 into close contact with the blank mold 3 (step B).

As shown in FIG. 1 (c), the molding agent inlet 2 is removed, and the set blow nozzle 7 is installed on the blank mold 3, and the inside of the pre blow nozzle 5 is configured. After moving the protrusions 6 to the lower part, the preform 8 is formed by blowing air into the molding agent 1 from the lower part through the preblowing nozzle 5 (step C).

As shown in FIG. 1 (d). After disassembling the set blow nozzle (7), the pre blow nozzle (5) and the blank mold (3), the net ring (4) is rotated 180 degrees and a blow mold (9) is installed around the preform (8). (Step D process). The blank mold 3 consists of two parts as shown in FIG. 2, and disassembly of the blank mold 3 is performed by separating two parts in the left-right direction. The shape of the internal space of the blow mold 9 is the same as the external shape of the final molded product to be manufactured.

As shown in Fig. 1 (e), after removing the neck ring 4, the preform 8 is reheated (step E).

As shown in FIG. 1 (f), a blowhead 10 is installed on an upper portion of the blow mold 9 to blow air into the preform 8 through the blowhead 10 to form a preform. To the inner surface of the blow mold 9 to form the final molded product 11 (F step process).

As shown in FIG. 1 (g), the blowhead 10 and the blow mold 9 are dismantled and transferred to the apparatus of the next process by the tongs 12 (step G). The blow mold 9 consists of two parts as shown in FIG. 3, and the disassembly of the blow mold 9 is carried out by separating the two parts in left and right directions.

As can be seen from the foregoing, according to the general blow molding method and apparatus, a groove for attaching a decoration to the container cannot be formed in the container shoulder.

In order to form the decorative attachment groove on the bottom, blow molding may be performed by forming projections on the upper surface of the lower mold 9-1 separated from the blow mold 9.

The lower mold 9-1 may be formed with a decoration attachment groove in the bottom of the container since the final molded product is separated downward.

And, it is conceivable to form protrusions on the ceiling surface of the inner space of the blow mold 9 in order to form a decorative attachment groove in the container shoulder, but because the blow mold 9 is disassembled into two in the left and right directions, The projection of the blow mold 9 is caught by the final molded product 11. Therefore, the configuration of forming projections on the ceiling of the inner space of the blow mold 9 in order to form a decorative attachment groove on the container shoulder is not feasible.

The blow mold 13 of the first embodiment of the blow molding apparatus of the present invention for forming the decorative attachment groove on the shoulder of the final molded product is located at an upper portion of the position corresponding to the decorative attachment groove of the final molded product, as shown in FIG. The through hole 14 is formed in the wall, and the pin 16 is embedded in the bottom surface of the blowhead 15 at a position corresponding to the through hole 14. The diameter of the through hole 14 of the blow mold 13 is larger than the diameter of the pin 16, and the length of the protrusion from the bottom surface of the blow head 15 of the pin 16 is the through hole 14 of the blow mold 13. ) Is equal to the sum of the length and the depth of the decorative attachment groove of the final molded product (17).

Accordingly, the fin 16 of the blowhead 15 is shown in FIG. 4 by installing the blowhead 15 on top of the blow mold 13 during the F stage process to mold the final molded product 17. Inserting into the through hole 14 of the blow mold 13 as shown in the drawing, blows air into the preform in the conventional manner, and then disassembles the blow head 15 and the blow mold 13, the decorative attachment groove is The formed final article is molded.

In the blow mold 18 of the second embodiment of the blow molding apparatus of the present invention, as shown in FIG. 5, a three-stage through hole 19 is formed in the upper wall of the blow mold 18. The pin portion inserted into the hole of the smallest diameter of the three-stage through hole 19 and the head inserted into the hole of the largest diameter are wound around the pin 20 and the pin 20, The spring 21 provided in the middle size hole among the three-stage through holes 19 is configured in the three-stage through holes 19. The total length of the pin 20 is equal to the sum of the length of the three-stage through hole 19 and the depth of the decorative attachment groove of the final molded product.

In the F-step process of the blow molding using the blow mold 18 of the second embodiment, the blow head 10 is installed on the blow mold 18, and the pin 20 is pushed down to push the pin 20 down. By moving, the end of the pin 20 protrudes from the ceiling surface of the internal space of the blow mold 18. Thereafter, the final molded product 17 is molded in a conventional manner.

According to the blow molding method and apparatus of the present invention, a groove for attaching a decoration to the shoulder of the container of the final molded product can be easily formed.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made within the spirit and scope of the invention, and such variations and modifications are within the scope of the appended claims. Do.

Claims (6)

Molding agent (1) injection process (step A) into the blank mold (3), molding agent (1) contact process (step B) to the inner space lower part of the blank mold (3), the inside of the molding agent (1) Blowing air into the preform (8) to form the preform (8), rotating the preform (8) by 180 ° and installing the blow mold (step D), preheating of the preform (8) (E) Step), the process of installing the blowhead in the blow mold to blow the air into the preform (8) to form the final molded product (step F), and the process of dismantling the blowhead and blow mold to transfer the final molded product ( In the blow molding method of the container (G), the step F is such that the pin protrudes from the through hole formed in the upper wall of the blow mold to the internal space of the blow mold in order to form a decoration attachment groove in the shoulder of the final molded product. The air inside the preform (8) Blow-molding method, characterized in that the step of molding into a final molded container. The method of claim 1, wherein the position of the pin protruding into the inner space of the blow mold is a position corresponding to the decoration attachment groove of the final molded product, the length of the pin protruding into the interior space is the same as the depth of the decoration attachment groove. Blow molding method of container. A preform formed by injecting the molding agent 1 into the blank mold 3, bringing the molding agent 1 into close contact with the inner space of the blank mold 3, and blowing air into the molding agent 1. In the blow mold and blow head of the blow molding apparatus for molding the molded product 8 into the final molded product, through holes 14 are formed in the upper wall at the position where the blow mold 13 corresponds to the decorative fitting groove of the final molded product. And a pin (16) is embedded in a bottom surface of the blow head (15) corresponding to the through hole (14) of the blow mold (13). The diameter of the through hole 14 of the blow mold 13 is larger than the diameter of the pin 16, and the protruding length of the pin 16 from the bottom of the blowhead 15 is the through hole 14. Blow mold and blow head of the blow molding apparatus, characterized in that the sum of the length and the depth of the decorative attachment groove of the final molded product. A preform formed by injecting the molding agent 1 into the blank mold 3, bringing the molding agent 1 into close contact with the inner space of the blank mold 3, and blowing air into the molding agent 1. In the blow mold of the blue right molding apparatus for molding the molded product 8 into the final molded product, a three-stage through hole 19 is formed in the upper wall at a position corresponding to the decorative fitting groove of the final molded product. It is installed in the pin 20 which consists of the pin part inserted in the hole of the smallest diameter of the hole 19, and the head inserted in the hole of the largest diameter, and the hole of the middle diameter of the three stage through-holes 19. Blow mold of the blow molding apparatus, characterized in that the spring 21 is configured in the three-stage through hole (19). 6. The blow molding apparatus according to claim 5, wherein the total length of the pin (20) is equal to the sum of the length of the three-stage through hole (19) and the depth of the decorative attachment groove of the final molded product.