JPH0238375B2 - GANGUNOSEIZOSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for manufacturing toys equipped with joints, and in particular, the present invention relates to an apparatus for manufacturing toys equipped with joints, and in particular, a method for manufacturing dolls including the main components such as the torso, legs, arms, etc., including the joints. The present invention provides a manufacturing device that enables integral molding through a plurality of consecutive molding steps.

``Prior art'' Conventional doll manufacturing equipment molds the doll's body, legs, arms, and other components by molding synthetic resin.
These parts are molded as separate front and rear or left and right parts, and these parts are assembled by screws in a manual assembly process, and then connected rotatably to each other by riveting, etc. By doing so, the required joints were formed.

``Problems to be Solved by the Invention'' However, according to the above-mentioned conventional manufacturing equipment, each component of the doll, such as the body, legs, arms, etc., is molded as separate front and rear or left and right parts. For example, even in the most conservative calculation, the torso has 5 pieces, the legs have 5 x 2 = 10 pieces, and the arms have 4 x 2 = 8 pieces.
A total of 23 molded parts, 8 screws for assembly
8 rivets, etc., to assemble the doll, a total of 39 parts are required, which has the disadvantage of requiring an extremely large number of parts. Molded parts related to molding have the disadvantage that it is difficult to mold them uniformly under specified molding conditions due to shrinkage during molding. Because it is assembled, it is extremely troublesome to assemble, requiring a large number of assembly man-hours, and even if quality control is carried out in each process, there will inevitably be variations in the finished product due to the above-mentioned molding problems, and manufacturing costs will be high. It had drawbacks such as:

"Means for Solving the Problems" The present invention eliminates the manufacturing disadvantages of the conventional manufacturing equipment described above, and involves arranging a plurality of molds at predetermined angles on concentric circles around the rotation axis. At the same time, the respective molds are formed with required molds at the positions of corresponding parts for configuring the respective joints according to a predetermined molding order, and these molds are configured. Between the core side and the cavity side, there is a runner that is slidable and rotatable in the axial direction of the rotating shaft for holding a part of the runner of the part to be molded and transferring it to the mold for the next molding order. A stripper is installed, a plurality of engaging claws are protruded from the rotating shaft at the predetermined angle, and an operating shaft is slidably mounted on a piston shaft of a hydraulic device for driving the engaging claws. A half-moon-shaped guide groove is formed to guide the coaxial end toward one side of the engagement pawl during driving and to detour it when returning.

``Example'' The present invention will be explained with reference to an example shown in the figures below. Figures 6 and 7 show a doll to be manufactured in an example of the present invention, and this doll has main parts including joints. Body part 10, leg part 2 as component parts
0, the arm part 30, and the torso part 10 is connected to a head part 11, a chest part 12, and a waist part 13, which are swingably connected to each other.
Consists of etc.

In the manufacturing process of such a doll, the following will be explained based on the manufacturing process of one leg 20 shown in FIG.
First, in the first molding process, as shown in FIG. 5A, a shaft member 21 is provided with a protruding shaft 21a that is connected to the runner 1a and is attached to the bearing portion 14 of the waist portion 13;
A protruding shaft 22a serving as one member constituting the joint part
A foot portion 22 with Next, in the second molding process,
An intermediate part 25 is connected to the runner 1b and rotatably encloses the shaft member 21, and has a protruding shaft 25a on the other side, and an intermediate part 25 that rotatably encloses the protruding shaft 22a and protrudes on the other Intermediate parts 26 each having a shaft 26a are insert-molded, and a knee part 27 is formed in the middle thereof, having protruding shafts 27a and 27b serving as one of the members constituting the joint part of the knee part. Next, in the third molding process, as shown in FIG. The supporting bearing side member 29 is integrally molded using an insert.

FIG. 2 is a front view of the main part of the core 2 side of the molding device for performing the series of molding steps described above, and shows the main part of the molding device used in the first molding step located at position x on a concentric circle about the rotating shaft 3. A second mold 1Y used in the second molding process is provided at a position Y rotated by 120 degrees from the same mold 1x, and a second mold 1Y used for the second molding process is provided at a position Z further rotated by 120 degrees from the same mold 1Y. A third mold 1Z used in the third molding step is provided. These molds are formed in accordance with a predetermined molding order at the positions of corresponding parts for forming joints, etc., respectively.

FIG. 1 is an exploded perspective view of the main parts of the above-mentioned molding apparatus, and in the same figure, 1 is the cavity of the mold corresponding to the above-mentioned core 2, and between the cavity 1 and the opposing core 2 there is a structure as described above. As a transfer means for transferring the part to be molded to the mold in the next molding order, a stopper 4 is equipped with the rotating shaft 3 and holding one end of the runner 1a so as to be rotatable and movable in the axial direction. It is set up. Further, a protruding base 5 equipped with a protruding pin 5a is provided on the back side of the core 2, and the core 2 and the protruding base 5 are connected via springs 6b along a plurality of guide pins 6a protruding from a pushing base 6 connected to a pressing device. It is installed so that it can freely slide in the axial direction. Further, the rotating shaft 3 is provided with engaging claws 7 projecting on three sides for rotating the rotating shaft by a predetermined angle, that is, 120°, and the engaging claws 7 are rotatably held on the outside and hydraulically attached to one side. A guide frame 8 equipped with a device 8a is installed, and an operating shaft 9 swingably mounted on a piston shaft 9a of a hydraulic device 8a is led out into the guide frame 8, and an end portion of the operating shaft 9 is guided out. A half-moon-shaped guide groove 8b is formed to guide the engaging claw 7 to one side during driving and to take a detour when returning.

"Function" The operation of each part of the molding process using the molding apparatus as described above will be explained based on FIGS. 3 and 4.
In this case, the core 2 side is in close contact with the cavity 1 side as shown in a of FIG.
a, and by injection molding in the same mold in this state, a part of the part 1c in the previous molding process is integrally formed with the molded part 1d in the later order. Can be insert molded.
Next, the cavity 1 is separated from the side core 2 side as shown in FIG. The integral projecting pin 5a is pushed out, and the molded parts 1c and 1d are separated from the mold on the core 2 side together with the stripper 4. Next, when the stripper 4 is continuously pushed out as shown in FIG. 4D, the ejector pin 5a is left behind, and the stripper 4 is separated from the ejector pin 5a and becomes rotatable. Next, as shown in FIG. Sometimes, it moves along the curved part of the guide groove 8b and bypasses the engaging claw 7. As a result, the stripper 4 is rotated together with the rotary shaft 3 at a predetermined angle, that is, exactly 120 degrees, and the molded part 1 formed by the mold at this position is rotated.
c and 1d are held by the same stripper 4 and moved onto the mold of the subsequent process, while in parallel, a new molded part 1c formed in the previous process is transferred to the stripper 4. It is sent along with the rotation of 4 and positioned on the same type. Next, as shown in f, the pressing device is moved back and the stripper 4 is positioned on the core 2 side, and the molded part 1c of the above-mentioned prior process is moved.
Guide and place on the mold. Below is a in Figure 3 above.
Injection molding is carried out in the same manner.

By repeating the above operations, molding is continuously performed in each mold. The parts molded in the mold 1x at position x in FIG. The remaining parts are integrally insert-molded while being guided to the mold 1Z at position Z, and are finally taken out as a finished product of the main components including the joints. At the same time, each runner is separated from the molded part by a runner cutting device (not shown).

"Effects of the Invention" By continuously performing a plurality of insert molding processes as described above, the main components such as the torso, legs, arms, etc. of the doll including the joints as in the embodiment can be individually molded. Can be integrally molded. This eliminates the need to mold many parts individually and assemble them one by one as in the conventional type, and it is possible to reduce the number of parts and assembly man-hours, and significantly reduce manufacturing costs.

In addition, since a plurality of molds are arranged concentrically at predetermined angles around the rotating shaft, a stripper that is slidable and rotatable in the axial direction of the rotating shaft is provided, and the stripper is inserted in the axial direction. By means of a simple drive in the rotational direction, it is possible to hold part of the runner of the part to be molded in each position and to transport it precisely to the next mold.

In particular, the driving means in the rotational direction is configured to directly generate driving force from the reciprocating movement of the piston of the hydraulic device by guiding the end of an operating shaft swingably mounted on the piston shaft along a half-moon-shaped guide groove. It can be used as a guide, and accurate positioning is possible.

This simplifies the molding equipment that continuously performs multiple insert moldings, and enables stable molding at all times, eliminating product variations due to molding defects that occur with conventional models, and producing finished products with consistently stable quality. can be provided.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the main parts of a toy manufacturing apparatus showing an embodiment of the present invention, Fig. 2 is a plan view of the main parts of the molding apparatus, and Figs. A side view of the main parts of the molding device for explaining the operation,
FIG. 5 is a perspective view for explaining each step of forming the legs of the doll, FIG. 6 is a cutaway front view of the main part of the doll, and FIG. 7 is a cutaway side view of the main part of the doll. In the figure, 1 is a cavity, 2 is a core, 3 is a rotating shaft, 4 is a stripper, 5 is a protruding base, 6 is a pressing base, 7 is an engaging claw, 8 is a guide frame, 8a is a hydraulic device,
8b is a guide groove, 9 is an operating shaft, 1x is a first mold, 1Y is a second mold, 1Z is a third mold,
1a and 1b are runners, 10 is a torso, 20 is a leg,
30 is an arm.

Claims (1)

[Claims] 1. A plurality of molds are arranged concentrically around the rotation axis at predetermined angles, and each mold has molding molds in accordance with a predetermined molding order.
Required molds are formed at the positions of the corresponding parts for configuring the joints, etc., and between the core side and cavity side of these molds is one of the runners for the parts to be molded. A stripper is installed to be slidable and rotatable in the axial direction of the rotating shaft for holding and transferring the mold to the next molding order, and the stripper is attached to the rotating shaft at the predetermined angle. A plurality of engaging claws are protruded from the shaft, and an operating shaft is swingably mounted on the piston shaft of a hydraulic device for driving the operating shaft, and the end of the same shaft is guided to one side of the engaging claws when driven. A toy manufacturing device characterized in that a half-moon-shaped guide groove is formed for detouring when returning.