JP2001252970A - Mold for molding head of elastic doll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for molding head bodies of elastic dolls which can mold a plurality of the doll heads at a stroke. SOLUTION: The mold is constituted so as to satisfy the requirements including (1) in split molds 1, 2 which form the mold, molding spaces for molding the doll head bodies are formed vertically in parallel to a parison 11 for molding, (2) the face part of the doll head body is formed in one molding space 3 of each of the upper and lower split mode 1, 2, and the back of the head is formed in the other molding space 4, (3) in each molding space 3, a nozzle 5 which faces the molding space and injects air is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for blow molding an elastic doll head.

[0002]

2. Description of the Related Art Conventionally, the head of a doll has been formed by slush molding with vinyl chloride. In recent years, however, due to increasing awareness of environmental issues, a head using a safer synthetic resin has been desired. Therefore, the applicant of the present application filed Japanese Patent Application No. 11-29888.
A means for solving the above-mentioned problem by the technique shown in No. 2 has been proposed.

[0003]

However, in the above means, the production efficiency is not good because the doll heads are formed one by one. By preparing a plurality of the same molding dies, it is possible to obtain molded products only for the molding dies in a single molding operation, but multiple molding machines that move the molding dies at the same time are required, increasing costs. I do.

[0004] When the head of a doll is formed, an uneven die may be used to make the parison uneven. For this reason, after the parison is discharged from the molding machine, it is cooled and tries to harden, but the parison may be bent because it is pulled toward the thin portion or the thick portion.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a molding die for an elastic doll head capable of forming a plurality of doll heads at once.

[0006]

In order to solve the above problems, a doll head mold according to the present invention is a mold for blow molding a doll head made of a thermoplastic resin, and has the following requirements. A molding die for an elastic doll head, comprising: (A) In the divided molds constituting the mold, a plurality of molding spaces for forming the head of the doll are formed vertically above and below the parison for molding. (B) Each of the upper and lower divided molds is formed. The face of the doll's head is formed in one molding space, and the back of the head is formed in the other molding space. (C) Each molding space has an injection nozzle which faces the molding space and injects air. Is placed

[0007] The above-described molding die may be configured so as to further satisfy the following requirements. (B) A fixture for fixing the parison before closing the split mold is provided. (B) The fixture is provided so as to press at least the lower part of the lower molding space. Is preferably slidable.

[0008]

FIG. 1 is a sectional view of a molding die for an elastic doll head according to the present invention. This mold is composed of two split molds 1 and 2, and FIG.
FIG.

As shown in FIGS. 1 and 2, two doll head molding spaces 3 and 4 are formed vertically on the mating surfaces 1a and 2a of each split mold. A molding space 3 for the face of the head of the doll is formed in one of the divided molds 1, and a molding space 4 for the head is formed in the other divided mold. The parting line P of the molded product is set so as to extend from the forehead to the back of the head through the ears.

One of the split molds 1 has an air injection nozzle 5.
Is arranged. The air injection nozzle 5 is provided with neck hole forming means 6.
The neck hole forming means 6 is slidably attached to the split mold 1. The air injection nozzle 5 is connected to an external air supply (not shown). The neck hole forming means 6 is driven by a cylinder device 7, and by sliding the neck hole forming means 6, the tip of the neck hole forming means 6 and the air injection nozzle 5 are connected to the molding space 3 of the mold.
It is arranged so that it may appear inside.

Next, the mating surfaces 1a, 2
a, a concave groove 8 is formed in the lower part of the molding spaces 3 and 4 in the lateral direction.
2a is provided so that it can appear and disappear. Each fixture 9 is formed in an elongated plate shape, and is constantly urged by a spring 10 in a direction protruding from the mating surface. Both fixtures 9 are arranged at the same height position.

In molding the doll head, a molding parison 11 made of a thermoplastic elastomer as a molding material is lowered between the split molds 1 and 2 opened as shown in FIG. It is preferable to use an olefin elastomer as the molding material, but a urethane elastomer may be used. As shown in FIG. 5, the parison 11 is thicker than the left and right sides, so that the parison 11 wraps around the head of the doll well. Then, as shown in FIGS. 3 and 4, the mold is closed and operated, and the neck hole forming means 6 is slid forward to form a molding space for molding the neck hole, and at the same time, the air injection nozzle 5 is moved to the molding space. To enter,
Finally, the tip of the air injection nozzle 5 penetrates through the parison 11 and is inserted therein. Then, air is injected by the air injection nozzle 5. The molding material expands and sticks to the inner walls of the molding spaces 3 and 4 of the mold. Then, after the molding material has cooled, the divided molds 1 and 2 are separated and opened, and the molded article (head) 12 inside may be taken out. Immediately before the mold is opened, the neck hole forming means 6 is slid in the retreating direction to retract the air injection nozzle 5 from the formed neck hole. The hole when the air injection nozzle 5 is pulled out is formed in this neck hole.

When the parison 11 is made uneven in thickness, the parison is discharged from the molding machine and then cooled and hardens. However, since the thin part is pulled toward the thick part, the parison is deformed. However, before the mold is closed as described above, the fixing tool 9 is projected from the mating surfaces 1a and 2a by the spring 10 before the mold is closed, as shown in FIG. When closing the mold, the fixing tool 9 comes into contact before the mating surfaces 1a and 2a of the split molds 1 and 2 come into contact, so that the uneven thickness parison 11 is held by the fixing tool 9 before it is deformed. . Thereafter, since the mold is further closed, the uneven thickness parison 11 is injected with air in a state in which a good shape is fixed. Therefore, a well-formed doll head can be obtained from the upper and lower molding spaces. The fixing tool 9 should press at least the lower part of the lowermost molding space.

When the molds are opened after molding, the mating surfaces 1a and 2a of the two split molds 1 and 2 are immediately separated from each other, but the fixture 9 is pressed against each other by the pressing force of the spring 10 up to the stroke end. Therefore (similar to FIG. 3), the portion sandwiched between the fixtures 9 is held in a state before the mold is opened. For this reason, the doll head 12 molded in the molding spaces 3 and 4 is also kept in the closed state despite the mold opening and moving, so that the molded doll head 12 is taken out. It can be done easily.

[0015] Therefore, since the head is made of a thermoplastic elastomer, there is no problem in safety even if the infant licks the doll, and harmful substances are generated even if the doll becomes old and is discarded or incinerated. There is no fear and it is safe. Furthermore, since the parting line is hidden by the hair when performing the flocking process after molding and does not appear outside, the product value is not impaired even if the parting line is not removed later, It can be used as a guideline for flocking.

Although the above example has been described with reference to a two-piece mold, three or more molds may be used.

Further, the fixing tool may be replaced with a pre-blow pinch.

Further, as described above, the face of the head of the doll is formed in one molding space 3 of each of the upper and lower split molds 1 and 2, and the back of the head is formed in the other molding space 4. The face and the back of the head may be divided as shown in FIG. 13 is a parting line.

Furthermore, the air injection nozzle does not necessarily have to be arranged as shown above. You may make it slide from the head of a molding space. In this case, a hole left when the air injection nozzle is retracted remains on the head as a trace, but since the hair is planted on the head, the appearance is not impaired. At this time, the neck hole may be separately processed.

[0020]

According to the first aspect of the present invention, since a plurality of molding spaces for forming the doll head are formed in the divided mold vertically above and below the parison for molding, a plurality of molding spaces are formed at one time. The doll head can be molded.

Since the parting line does not appear on the face, the appearance of the molded product is not impaired.

According to the second aspect of the present invention, since the parison is fixed by the fixture at the lower part of each molding space before closing the mold, the parison is fixed in a good shape. Air will be injected. Therefore, a well-formed doll head can be obtained from each of the upper and lower molding spaces, and a plurality of doll heads can be formed at one time, so that production efficiency can be greatly improved and production costs can be reduced. Can be.

According to the third aspect of the present invention, since the air injection nozzle is slidable, the hole formed by the air injection nozzle at the time of molding can be formed in the neck hole of the head of the doll. .

[Brief description of the drawings]

FIG. 1 is a sectional view of an elastic doll head according to the present invention when a molding die is opened.

FIG. 2 is a front view of one split mold.

FIG. 3 is a sectional view showing a state in which the mold is being closed.

FIG. 4 is a sectional view showing a state in which the mold is closed.

FIG. 5 is a sectional view of a parison.

FIG. 6 is an explanatory diagram of another division mode of the head for a doll.

[Explanation of symbols]

 1, 2 Split mold 3, 4 Molding space 5 Air injection nozzle 9 Fixture 11 Parison

Claims (3)

[Claims] 1. A mold for blow-molding a doll head made of a thermoplastic resin, comprising the following requirements: (A) In the divided molds constituting the mold, a plurality of molding spaces for forming the head of the doll are formed vertically above and below the parison for molding. (B) Each of the upper and lower divided molds is formed. The face of the doll's head is formed in one molding space, and the back of the head is formed in the other molding space. (C) Each molding space has an injection nozzle which faces the molding space and injects air. Is placed 2. A molding die for a head for an elastic doll according to claim 1, wherein the mold has the following requirements. (B) A fixture for fixing the parison before closing the split mold is provided. (B) The fixture is provided so as to press at least the lower part of the lower molding space. 3. A molding die for an elastic doll head according to claim 1, wherein said injection nozzle is slidable.