JPH0538386A - Manufacture of ring-shaped toy - Google Patents

Abstract

PURPOSE:To provide a manufacturing method for a ring shaped toy with which cost can be reduced and the joint through the welding at both the edge parts is facilitated, by using a synthetic resin sheet in substitution for a pipe shaped member. CONSTITUTION:A strip shaped body 2 consisting of a synthetic resin sheet 1 is folded in the width direction, and the superposed both side edge parts 4 and 5 are welded except the both the edge parts, and then folded in the lengthwise direction, and superposed and welded in the state where both the side edge parts 6 and 7 are extended, and a relayed ring form is formed, and further the joined b6th edge parts are folded in the width direction again, and the not-yet-welded parts 7 and 8 at both the side edge parts 4 and 5 are welded, and the whole is formed to a pipe form, and the inside is charged with air and expanded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a ring-shaped toy, such as a hula hoop, which has a hollow and substantially circular cross section.

[0002]

2. Description of the Related Art A conventional ring-shaped toy is manufactured by using a pipe-shaped material from the beginning, bending the material in a circular shape, and joining both ends.

[0003]

If a pipe-shaped material is used as in the above-mentioned conventional method, there is a disadvantage that the cost becomes high. Further, in the case of a pipe-shaped material, there is a problem in that it is extremely technically difficult to weld and join both ends. Therefore, an object of the present invention is to provide a method for manufacturing a ring-shaped toy that can reduce costs by manufacturing using a synthetic resin sheet instead of a pipe-shaped material and that facilitates seaming by welding both ends. To do.

[0004]

In order to achieve the above object, in the method for manufacturing a ring-shaped toy according to the present invention, an elongated strip 2 is formed from a thermoplastic and flexible synthetic resin sheet 1, and the strip 2 is formed. Where the stopper 3 is attached to the required position, and then the strip 2 is folded in two in the width direction so that the side edges 4 and 5 of the strip 2 overlap each other, and both ends of the overlapped side edges 4 and 5 are removed. To form a pipe part by welding, then fold the whole piece in two in the length direction, extend both ends to the original state, and weld both edge parts 6, 7 to each other. To form a ring shape, and further fold the joined end portions again in the width direction and overlap and weld the unwelded portions 8 and 9 on both side edge portions to form a pipe shape as a whole. None, enter air into the pipe from the stopper 3 It is intended to be completed by inflating Te.

[0005]

The band-shaped body 2 is folded in two in the width direction, and the overlapping side edges 4 and 5 except the both ends are first welded, so that the both ends can be extended next. It becomes possible to easily weld and join the both edge portions 6 and 7 in a state of being overlapped.

[0006]

Embodiments will be described below in detail with reference to the drawings. First, two thermoplastic and flexible rectangular synthetic resin sheets 1 such as vinyl chloride are prepared as shown in FIG.
In addition, the synthetic resin sheet 1 may be one sheet or three sheets depending on the size.
More than one is fine. Next, the two synthetic resin sheets 1 are welded as shown in FIG. 2 to join them to form an elongated strip 2. The synthetic resin sheet 1 is 1
When the number of sheets is one, the joining process is of course unnecessary. And
A stopper 3 as shown in FIG. 2 is attached to a required position of the strip 2. Next, as shown in FIG. 3, the strip 2 is folded in two in the width direction so that both side edge portions 4 and 5 overlap each other,
The overlapped side edge portions 4 and 5 except for both end portions are welded (10 in FIG. 3 indicates the welded portion) to form a partial pipe shape. It is desirable that the outer surface and the inner surface of the pipe-shaped portion 11 are inverted so that the welded portion 10 is arranged on the inner surface side as much as possible. At this stage, the pipe-shaped part 11
As shown in FIG. 4, a ball 12, a bell or the like may be movably inserted into the inside of the. Next, as shown in FIG. 5, the whole is folded in two in the lengthwise direction, both ends thereof are extended to their original state, and both end edges 6, 7 are overlapped and welded (1 in the figure).
3 shows the welded portion), and the whole is formed into a ring shape. Next, the spliced end portions are shown in FIG.
As shown in Fig. 7, it is folded again in the width direction, and the unwelded portions 8 and 9 on both side edges are overlapped and welded as shown in Fig. 7 (14 in Fig. 7 indicates the welded portion). Is formed into a pipe shape, and finally, air is blown into the pipe from the stopper 3 to inflate it as shown in FIGS. 8 to 10, whereby a ring-shaped toy is completed.

[0007]

As described above, the present invention has the advantage that the cost can be reduced because it can be manufactured from a synthetic resin sheet instead of the conventionally used pipe-shaped material, and when the pipe-shaped material is used, While it is extremely difficult to weld and splice both ends, the present invention has the advantage that the step of welding and splicing both ends is extremely easy. There is an advantage that the diameter of the ring and the thickness of the pipe-shaped portion can be easily changed only by changing the length and the width.

[Brief description of drawings]

FIG. 1 is a perspective view of a synthetic resin sheet as a material.

FIG. 2 is a perspective view showing a state in which an elongated strip is formed and a plug is attached.

FIG. 3 is a perspective view showing a state where a pipe-shaped portion is partially formed.

FIG. 4 is a perspective view showing a state where a ball is inserted into a pipe-shaped portion. ..

FIG. 5 is a perspective view showing a state where both ends are joined together.

FIG. 6 is a perspective view showing a state in which both joined end portions are folded in two in the width direction.

FIG. 7 is a perspective view showing a state where the unwelded portion is welded to form a pipe-like structure.

FIG. 8 is a partial perspective view showing a state in which air is introduced into the interior and the inflation is completed.

9 is a cross-sectional view taken along the line AA in FIG.

10 is a cross-sectional view taken along the line BB in FIG.

[Explanation of symbols]

 1 Synthetic Resin Sheet 2 Band 3 Plug 4 Side Edge 5 Side Edge 6 End Edge 7 End Edge 8 Unwelded Site 9 Unwelded Site 10 Welding Site 11 Pipe-like Site 12 Ball 13 Welding Site 14 Welding Site

Claims (1)

[Claims] 1. An elongated strip-shaped body 2 is formed from a thermoplastic and flexible synthetic resin sheet 1, a stopper 3 is attached to a required position of the strip-shaped body 2, and then the strip-shaped body 2 is attached to both side edges 4 thereof. 5 are folded in two in the width direction so that they overlap with each other, and the overlapped side edges 4 and 5 except for both ends are welded to form a partially pipe-like shape. Fold it in two and extend both ends to the original state, and overlap both edges 6 and 7 to weld them together to form a ring shape. Fold it in half and put the unwelded parts 8 and 9 on both side edges on top of each other to form a pipe shape, and complete by inflating the inside of the pipe from the plug 3 mentioned above. A method for manufacturing a ring-shaped toy, characterized by: