JPS6250113A - Apparatus for manufacturing toy - Google Patents

Abstract

PURPOSE:To mold monolithically main constituting parts in each molding process, by carrying out successively a plurality of insert molding processes which consist of the former molding process forming the one member constituting joints and the latter molding process forming the other member to be pairs of the part prepared in the former process. CONSTITUTION:In the first molding process, a foot part 22 having a projected axis 22a and reinforcing parts 23, 24 all of which constitute the one member are molded in being connected with a runner 1a. In the second molding process, an intermediate part 25 and an intermediate part 26 enveloping and holding the projected axis 22a in freely rotating condition are insert-molded respectively and a molding constituting a knee joint part is molded between them. In the third molding process, the bearing side parts 29 enveloping and holding the bearing part 28 and the projected axes 22a, 27b in freely rotating condition respectively are monolithically molded by means of insert molding. These molding processes including the insert molding processes are successively and continuously carried out.

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 J'' Conventional doll manufacturing equipment molds the doll's body, legs, parts of arms, and other component parts by molding synthetic resin, respectively, as a front model or left and right divided parts. These parts were assembled by screws in a manual assembly process, and the required joints were formed by rotatably connecting the parts with rivets or the like.

"Problem to be Solved by the Invention J However, according to the above-mentioned conventional manufacturing equipment, each component such as the doll's body, legs, arms, etc. is molded as a front model or left and right divided parts, respectively. , for example, the most conservative calculation would be 5 pieces for the torso, 5 x 2-10 pieces for the legs, and 4 pieces for the arms.
There are 23 molded parts, 8 screws, 8 rivets, etc. for assembly, and at least 39 parts in total are required to assemble the doll. However, the interconnected molded parts such as the joints of these dolls cannot be uniformly molded under specified molding conditions due to shrinkage during molding. Furthermore, since these parts are assembled one by one by hand, assembly is extremely troublesome, requiring a large number of assembly man-hours, and each J-
Even if sufficient quality control is carried out, there will inevitably be variations in the finished product due to the above-mentioned molding problems.
It had drawbacks such as high manufacturing cost.

"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 a rotation axis. In addition, the respective molds are formed with required molds at the positions of the corresponding parts for configuring the respective joints, etc., according to a predetermined molding order, and the molds are molded by these molds. It constitutes a transfer means for transferring the part to the next molding order.

``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. It consists of a torso 10, legs 20, and arms 30 as components, and the torso 10 has a head 11 and a chest 1 which are connected to each other so as to be able to swing freely.
2. Consists of waist part 13, etc.

In the manufacturing process of such a doll, an explanation will be given based on the manufacturing process of one leg 20 shown in FIG. 5. First, in the first molding process, as shown in FIG. A shaft member 21 with a protruding shaft 21a for attachment to the joint part 14, a foot part 22 with a protruding shaft 22a serving as one of the members constituting the joint part, and reinforcing members 23, 24.
is being molded. 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 21 is formed in the middle thereof, having protruding shafts 27a and 27b, which are one of the members constituting the joint part of the knee part. Next, in the third molding process, as shown in FIG.
2a and the protruding shaft 27b, respectively, are integrally molded with the side member 29 by an insert.

In this molding process, the molded parts in the second molding process, which has priority, are molded using a molding material that has a lower melting point and a higher shrinkage rate than the molding material used in the first molding process, which has priority. . Also, the third order of invasion is higher than this.
The molded parts in the second molding process are molded using a molding material that has a lower melting point and a higher shrinkage rate than the molding material used in the second molding process, which precedes it, and these molding processes including insert molding are sequentially performed. By continuously performing the above-mentioned joints, the main components such as the legs 20 are integrally molded.

FIG. 2 is a front view of the main part of the core 2 side of the molding apparatus for performing the series of molding steps described above, in which a point fjlx used in the first molding step is located on a concentric circle around the rotating shaft 3. A second mold 1Y used in the second molding step 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 11 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 constructing joints and the like.

FIG. 1 is an exploded perspective view of the main parts of the above-mentioned molding apparatus, and in the same figure, 1 is a cavity of the mold corresponding to the above-mentioned core 2, and between the cavity 1 and the opposing core 2 there is a As a transfer means for transferring the part to be molded to the mold in the next molding order, a stripper 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 protrusion base 5 equipped with a protrusion pin 5a is provided on the back side of the core 2, and the core 2 and the protrusion base 5 are connected to a spring 6b along a plurality of guide pins 6a protruding from a press base 6 connected to the suppression device.
It is slidably installed in the axial direction via the Further, the rotary ring 3 is provided with engagement claws 7 protruding from three sides for rotating it by a predetermined angle, that is, the above-mentioned 120°, and on the outside thereof, the engaging claw 7 is rotatably held, and on one side, hydraulic pressure is applied. A guide frame 8 equipped with a device 8a is installed, and an operating shaft 9 is installed in the guide frame 8 so as to be movable around the piston shaft of the hydraulic system.
A half-moon-shaped guide groove 8b is formed to guide the engaging claw 7 when being depressed.

"Operation" The operation of each part of the molding process using the above-mentioned molding apparatus will be explained based on FIGS. 3 and 4.
In the figure a, the core 2 side is in close contact with the cavity 1 side, and the part 1C molded in the preceding process is loosely inserted into the mold in a continuous manner with the runner 1a,
By injection molding in the same mold in this state, it is possible to integrally insert mold a part of the component 1C in the preceding molding process with the subsequent molded component 1d. Next, as shown in the same figure, the cavity 1 is separated from the core 2 side, and further, as shown in the figure C, the pressing table 6 is moved by the pressing operation of the pressing device.
The ejecting pin 5a, which is integral with the ejecting stand 5, is extruded together with the stripper 4 through the rotary shaft 3, and the molded part 1C11d is 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 d of FIG. 4, the protruding bottle 5a is left behind.
The stripper 4 is separated from the ejection bin 5a and becomes rotatable.

Next, in the figure e, the hydraulic device 8a operates and the stripper 4
is rotated by a predetermined angle, that is, 120°, so that
The molded parts IC, Id molded with the mold at this position are moved onto the mold of the subsequent process while being held by the same stripper 4, while the new molded parts IC, Id molded in the previous process are moved in the same way as above. The molded part 1C is sent along with the rotation of the stripper 4 and positioned on the mold. Next, as shown in f, the above-mentioned suppressing 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 guided onto the mold and placed. Thereafter, the state shown in FIG. 3A is reached, and injection molding is performed in the same manner.

By repeating the above operations, molding is continuously performed in each mold. Therefore, the part molded with the mold 1× at position X in FIG.
As the stripper 4 rotates, it is guided to the mold 1Y at position Y, and intermediate parts etc. are insert-molded, and as the stripper 4 rotates, it is guided to the mold 11 at position 2, and the remaining parts are integrally insert-molded. Finally, the main components including the joints are taken out as completed products. At the same time, each runner is separated from the molded part by a runner cutting device (not shown).

``Effects of the Invention'' As described above, the molding process consists of a first-order molding process for forming one member for configuring a joint, etc., and a second-order molding process for forming the other member to be paired with the same member. By continuously performing a plurality of insert molding processes, the main components such as the torso, legs, and arms of the doll including the joints as in the embodiment can be individually molded. This eliminates the need for molding and assembling many parts one by one as in the conventional type, greatly reducing the number of parts and assembly man-hours, and greatly reducing manufacturing costs.

In particular, a plurality of molds are arranged concentrically around the rotation axis at predetermined angles, and the required molds are formed in each mold according to a predetermined molding order.
The parts molded at each position can be accurately transferred to the next mold by a simple transfer means centered on the above-mentioned rotating shaft, and this makes it possible to simplify the equipment that continuously performs multiple insert moldings. This allows stable molding at all times.

Furthermore, by performing multiple consecutive insert moldings as described above, it is possible to always provide a finished product with stable quality, without product variations due to molding defects as in the conventional method.

[Brief explanation of the drawing]

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. FIG. 5 is a side view of the main parts of the molding device to explain the operation, FIG. 5 is a perspective view for explaining each molding process of the legs of the doll, FIG. FIG. 3 is a partially cutaway side view. In the same 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, 9 is an operating shaft, 1x is a first mold, 1Y is a second mold, 11 is a third mold, 1a, 1b are runners, 10 is a body, 20 is a leg, 30 is the arm.

Claims (1)

[Claims] A plurality of molds are arranged concentrically at predetermined angles around the rotation axis, and each mold is filled with corresponding parts for constructing joints, etc., according to a predetermined molding order. Form the required mold at the position,
A toy manufacturing apparatus, further comprising a transfer means for transferring the parts molded by these molds to a mold in the next molding order.