JP4079447B2 - Toy ball manufacturing method - Google Patents

Description

  In particular, the present invention relates to a method for manufacturing a toy ball in which a doll or an animal-shaped toy is housed and a liquid filler is filled.

  In the conventional toy ball manufacturing method, a foamed material is provided after a circuit board capable of emitting sound or emitting light is provided inside a sphere, and a toy having a doll or animal shape is provided on the circuit board. Alternatively, a toy ball rich in elasticity is manufactured by filling a rubber material. In addition, since the manufacturing method of the said toy ball | bowl is a method used generally well, it is not described especially in patent literature or nonpatent literature.

  However, since the toy ball manufactured by the conventional method for manufacturing a toy ball has only a predetermined elasticity, a toy ball having different elasticity can be obtained even if the liquid having fluidity is filled in the toy ball. Since it cannot be manufactured, further improvement is necessary.

  Accordingly, the present invention has been filed, and an object thereof is to provide a method for manufacturing a toy ball in which a doll or an animal-shaped toy is accommodated and a liquid filler is filled.

The invention of claim 1 of the present application is a process in which a mold including an upper case and a lower case is prepared, and a positioning pin is inserted into a lower portion of the lower case;
A step in which a toy is provided at one end of a positioning pin in the lower case, a support rod is provided in the center of the bottom of the toy, and an insertion hole for inserting the positioning pin is formed on one side;
After the upper case of the mold is filled with a liquid polyurethane resin, the lower case is combined with the upper case, and the combined mold is rotated by 180 degrees;
With the mold attached to the rotating device, a thick polyurethane resin is uniformly dispersed by centrifugal force during rotation, and a thick part for positioning the support rod is formed. After forming the polyurethane resin by cooling,
Removing the semi-finished toy ball having a thickened portion after solidification from the mold;
Filling the semi-finished product with a liquid filler containing luminescent powder or fluorescent powder through the injection hole in the thick part of the semi-finished product;
Sealing the injection hole in the thick part of the semi-finished product with a sealing rod after filling the liquid filler;
A toy ball manufacturing method comprising: a step of cutting a portion of a sealing rod protruding from the outside of the thick portion of the semi-finished product to complete a toy ball.

  The invention according to claim 2 of the present application is characterized in that the support rod is a separate support rod inserted into the bottom of the toy, and the thickened portion after solidification positions the support rod. A toy ball manufacturing method is provided.

  Invention of Claim 3 of this application provides the toy ball manufacturing method of Claim 1 or 2 characterized by adding a fragrance | flavor or fluorescent powder to the said liquid polyurethane resin.

  The invention according to claim 4 of the present application adjusts the elasticity of the semi-finished product by controlling the amount of liquid filler added to the semi-finished product. A manufacturing method is provided.

  The invention according to claim 5 of the present application is characterized in that the liquid filler is a liquid having a low freezing point such as pure water, mineral oil, salt water, a polymer transparent liquid, or an edible oil. A method for manufacturing a ball is provided.

  The present invention solves the above-mentioned problem, and a thick portion for positioning the support rod in the toy is formed by the rotational centrifugal force of the mold, and the filling amount of the liquid filler filled in the thick portion By controlling the above, it is possible to manufacture a toy ball having different elastic forces and having a toy inside.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  1 is a flowchart of a toy ball manufacturing method according to the present invention, FIG. 2 is a cross-sectional view showing a lower case of a mold in the toy ball manufacturing method according to the present invention, and FIG. 3 is a toy according to the present invention. FIG. 4 is a cross-sectional view showing a state in which a positioning pin is inserted into a positioning portion of a lower case in a ball manufacturing method, and FIG. 4 is a toy ball manufacturing method according to the present invention, in which a thick portion of a toy ball is placed inside a mold. And FIG. 5 is a side view showing a support rod, a positioning pin, and a sealing rod in the toy ball manufacturing method according to the present invention. 6 is a side view showing a mold in the toy ball manufacturing method according to the present invention. FIG. 7 is a toy ball manufacturing method according to the present invention in which the sealing rod is a toy ball. Is a sectional view showing the state of sealing the entry apertures, FIG. 8 is a perspective view showing a toy ball is manufactured by the manufacturing method of a toy ball according to the present invention.

As shown in FIGS. 1 to 3 and 6, the toy ball manufacturing method according to the present invention provides a mold comprising an upper case (1) and a lower case (2), and a lower part of the lower case (2). A positioning part (10) having a through hole (9) is provided, and a positioning pin (4) is inserted into the through hole (9) of the positioning part (10);
A toy (5) is provided at one end of the positioning pin (4) inside the lower case (2) (see FIG. 4), and a support rod (3) is integrated with the center of the bottom (11) of the toy (5). A step of forming an insertion hole (16) for inserting the positioning pin (4) on one side,
After the upper case (1) of the mold is filled with a liquid polyurethane resin composed of a prepolymer and a chain extender, the lower case (2) is joined to the upper case (1) Rotating the molded mold 180 degrees (see FIG. 6);
With the mold attached to the rotating device, a thick portion (6) that disperses the liquid polyurethane resin uniformly on the inner wall (8) of the mold and positions the support rod (3) by centrifugal force during rotation. And after the injection hole (14) is formed by the positioning pin (4) in the thick part (6), the step of solidifying the polyurethane resin by cooling,
Removing the semi-finished toy ball having the thickened portion (6) from the mold, and removing the positioning pin (4) from the semi-finished product;
Filling the semi-finished product with a liquid filler (15) containing luminescent powder or fluorescent powder through the injection hole (14) in the thick part (6) of the semi-finished product;
After filling with the liquid filler (15), the sealing rod (7) (see FIGS. 5 and 7) sealing the injection hole (14) in the thick part (6) of the semi-finished product When,
Cutting a portion of the sealing rod (7) protruding from the outside of the thick part (6) of the semi-finished product to complete a toy ball (see FIGS. 7 and 8).

  A fragrance or fluorescent powder can be added to the liquid polyurethane resin. Moreover, the elasticity of a semi-finished product is adjusted by controlling the addition amount of the liquid filler (15) with which the semi-finished product is filled.

  Also, as shown in FIG. 5, the support rod (3) of the above embodiment is formed integrally with the toy, but the separate support rod (3) is inserted into the bottom (11) of the toy (5) and solidified. The rear thick part (6) may position the support rod (3).

  The liquid filler (15) is preferably a liquid having a low freezing point such as pure water, mineral oil, salt water, a polymer transparent liquid, or an edible oil.

  Since the present invention includes the above-described steps, a thick part for positioning the support rod in the toy is formed by the rotational centrifugal force of the mold, and the filling amount of the liquid filler filled in the thick part is controlled. Accordingly, a toy ball having different elastic forces and having a toy inside can be manufactured.

It is a flowchart of the manufacturing method of the toy ball based on this invention. In the toy ball manufacturing method according to the present invention, it is a cross-sectional view showing the lower case of the mold. In the toy ball manufacturing method according to the present invention, it is a cross-sectional view showing a state in which the positioning pin is inserted into the positioning portion of the lower case. In the toy ball manufacturing method according to the present invention, a thick portion of a toy ball is formed inside a mold and a cross-sectional view showing a state in which the toy is positioned. In the manufacturing method of the toy ball concerning this invention, it is a side view which shows a support rod, a positioning pin, and a sealing rod. It is a side view which shows a mold in the manufacturing method of the toy ball based on this invention. In the toy ball manufacturing method according to the present invention, it is a cross-sectional view showing a state in which the sealing rod seals the injection hole of the toy ball. It is a perspective view which shows the toy ball manufactured by the manufacturing method of the toy ball which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper case 2 Lower case 3 Support rod 4 Positioning pin 5 Toy 6 Thick part 7 Sealing rod 8 Inner wall 9 Through-hole 10 Positioning part 11 Bottom part 14 Injection hole 15 Liquid filler 16 Insertion hole

Claims (5)

A mold comprising an upper case and a lower case is prepared, and a positioning pin is inserted into the lower part of the lower case;
A step in which a toy is provided at one end of a positioning pin in the lower case, a support rod is provided in the center of the bottom of the toy, and an insertion hole for inserting the positioning pin is formed on one side;
After the upper case of the mold is filled with a liquid polyurethane resin, the lower case is combined with the upper case, and the combined mold is rotated by 180 degrees;
With the mold attached to the rotating device, a thick polyurethane resin is uniformly dispersed by centrifugal force during rotation, and a thick portion for positioning the support rod is formed. After forming the polyurethane resin by cooling,
Removing the semi-finished toy ball having a thickened portion after solidification from the mold;
Filling the semi-finished product with a liquid filler containing luminescent powder or fluorescent powder through the injection hole in the thick part of the semi-finished product;
Sealing the injection hole in the thick part of the semi-finished product with a sealing rod after filling the liquid filler;
Cutting the portion of the sealing rod protruding from the outside of the thick portion of the semi-finished product, thereby completing the toy ball. The toy ball manufacturing method according to claim 1, wherein a separate support rod is inserted into the bottom of the toy, and the thickened portion after solidification positions the support rod. The method for producing a toy ball according to claim 1, wherein a fragrance or fluorescent powder is added to the liquid polyurethane resin. The method for producing a toy ball according to claim 1, wherein the elasticity of the semi-finished product is adjusted by controlling the amount of the liquid filler added to the semi-finished product. 5. The toy ball manufacturing method according to claim 4, wherein the liquid filler is a liquid having a low freezing point, such as pure water, mineral oil, salt water, a polymer transparent liquid, or an edible oil.

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