JP2606873B2 - Injection ski and manufacturing method thereof - Google Patents

Description

The present invention relates to an injection ski and a method for manufacturing the same.

(Prior Art) Injection skis are formed by filling and injecting a foamable resin between lower surface components such as a sliding surface material and an edge fitting, and upper surface components.

FIG. 3 shows a method of manufacturing a conventional injection ski. In the figure, 1 is a lower mold, and 2 is an upper mold. The lower surface components such as the edge fitting 3 and the sliding surface member 4 are incorporated in the lower mold 1, and the upper surface component 5 is incorporated in the upper mold 2. The resin 6 is filled.

In addition, when the conventional foaming resin 6 is used for integration, a mesh reinforcing material made of glass fiber or the like having high strength for the purpose of improving the binding property with the sliding surface member 4 and at the same time increasing the strength of the ski. 7 is integrated using a lower surface constituent member adhered to the inner surface of the sliding surface member 4.

In the conventional mold, a magnet 8 is provided in the lower mold 1 as shown in FIG. 3, and the edge metal 3 is attracted and positioned by the magnet 8, and the edge metal 3 reinforces the sliding surface material 4 and the mesh. The material 7 is supported.

(Problems to be Solved by the Invention) As described above, the conventional injection ski is injection-molded on the inner surface of the sliding surface material by using a mesh reinforcing material such as glass fiber. It only supports the side surfaces of the material 4 and the mesh reinforcing material 7, and the mesh reinforcing material 7 is formed of a high-strength material such as glass fiber, so that the edge fitting 3 can sufficiently support the lower surface constituting member. There is a problem that it is not done.

Further, since the sliding material 4 and the mesh reinforcing material 7 are formed of different materials, when the mesh reinforcing material is bonded to the sliding material, the lower surface component warps due to a difference in heat shrinkage and the like.
There was a problem that it would bend.

In addition, when the mesh reinforcing material is not bonded to the sliding surface material in advance, there is a problem that the position of the mesh reinforcing material is shifted when filling the foamable resin.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to prevent the positions of edge fittings, reinforcing materials, and the like from shifting when filling a foaming resin, and to bond the reinforcing materials. An object of the present invention is to provide a method of manufacturing an injection ski having improved adhesion and an injection ski obtained by the method.

(Means for Solving the Problems) The present invention has the following configuration to achieve the above object.

That is, in the injection ski plate in which a foamable resin is injected and filled into a gap between the lower surface component and the upper surface component of the ski, and a reinforcing material is joined to an inner surface of the lower surface component such as a sliding surface material, the reinforcing material is When a thin plate is formed of a magnetic material, a through-hole for allowing a foaming resin to pass through is formed on the reinforcing member, and the reinforcing member is placed on a lower surface component such as the sliding surface member. Small protrusions are provided to leave a certain gap between the lower surface component, and the lower surface component is integrally bonded via the reinforcing material,
Also, an injection ski manufactured by injecting and filling a foamable resin into a gap between a lower surface component and an upper surface component of a ski, and joining a reinforcing material for reinforcing the lower surface component to an inner surface of the lower surface component such as a sliding surface material. In the method of manufacturing a plate, an edge fitting, a lower surface component such as a sliding surface material are arranged in a lower portion of a lower mold, and a thin flat plate made of a magnetic material and a foamable resin are formed on the lower surface component. A reinforcing material provided with small projections through which a through-hole to be passed is formed and provided with a certain gap between the lower surface component and the lower surface component when the device is placed on the lower surface component such as the sliding surface material is placed. The upper component is pressed by an upper mold, and the edge fitting and the reinforcing material are sucked and positioned by a magnet provided in a lower mold, so that the edge component and the reinforcing member are in a gap between the lower component and the upper component. The reinforcing material A foamable resin is injected and filled into a gap between the lower surface component and the lower surface component to be integrated.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an explanatory view showing one embodiment of a method for manufacturing an injection ski according to the present invention. In the drawing, the same members as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, reference numeral 10 denotes a reinforcing member fixed to the inner surface of the sliding surface member 4. The reinforcing member 10 is formed of a magnetic material in the form of a thin flat plate. In the embodiment, an iron plate having a thickness of 0.2 to 0.3 mm is used.

2, a large number of through-holes 12 having a diameter of about 3 mm are formed in the reinforcing member 10, and at the same time, a projection 14 is provided on the lower surface facing the sliding surface member 4. The projections 14 are for forming a gap between the sliding surface member 4 and the reinforcing member 10 when the reinforcing member 10 is placed on the sliding surface member 4. The protrusion amount of the protrusion 14 can be appropriately set when forming the reinforcing material 10,
The distance between the reinforcing member 10 and the sliding surface member 4 can be set wide or narrow.

When the injection molding is performed using the reinforcing material 10, the edge fitting 3 and the sliding surface material 4 are incorporated into the lower mold 1 as shown in FIG. 1, and the reinforcing material 10 is mounted on the inner surface of the sliding surface material 4. While fixed, the foaming resin 6 is injected and filled while the upper component member 5 is pressed by the upper mold 2 to be integrated.

In FIG. 1, reference numeral 8 denotes a plurality of magnets provided at predetermined intervals in the lower mold 1. At the time of injection molding, the reinforcing material 10 and the edge fitting 3 are sucked and positioned.
When the foaming resin is injected and filled, the reinforcing material 10 and the edge fitting 3 are held so as not to be displaced.

When the foamable resin 6 is injected and filled, as shown in FIG. 2, the foamable resin 6 goes through the through-hole 12 into the space between the reinforcing material 10 and the sliding surface material 4 to be filled. Thereby, the binding property between the reinforcing material 10 and the sliding surface material 4 and the foamable resin 6 is improved.

As described above, in the manufacturing method of the above embodiment, the reinforcing material 10
Is made of a magnetic material, and is entirely attracted by the magnet 8 when incorporated into the mold, so that the reinforcing plate 10 is positioned and held at the same time as the edge fitting 3, so that each member is securely incorporated. There are advantages. As a result, the manufacturing method is extremely simplified, and as a result, it can be suitably used particularly for manufacturing skis for children and beginners.

Further, as described above, the gap between the reinforcing member 10 and the sliding surface member 4 can be adjusted by adjusting the amount of protrusion of the projection 14 provided on the lower surface of the reinforcing member 10, and by adjusting this gap, the ski can be adjusted. The feature is that the hardness of the plate can be adjusted. That is, the sliding surface material 4 of the reinforcing material 10
When the distance between them is reduced, the ski becomes harder, and when the distance between the reinforcing member 10 and the sliding surface member 4 is made wider, the ski becomes softer.

Therefore, it is possible to provide skis having different hardnesses by adjusting the amount of protrusion of the protrusions 14, and to change the hardness of even one ski by changing the amount of protrusions of the protrusions 14 according to the portion of the ski. Becomes possible. Thus, a ski having more appropriate hardness can be provided.

It should be noted that there are skis configured such that various characters and figures emerge on the skiing surface, and such skis are provided in advance on the inner surface (the resin-filled side) of the transparent skiing surface material. Characters and the like are printed, an appropriate paint is applied as a backup to the entire inner surface of the sliding surface material from the printed surface, and then the sliding surface material 4 is incorporated into a mold for injection molding. However, according to the manufacturing method of the present embodiment, since the foamable resin 6 wraps around between the reinforcing member 10 and the sliding surface material 4 and is filled, the sliding surface material 4
After the characters and the like are printed on the inner surface, the foaming resin 6 is injected, so that the characters and the like can be expressed on the sliding surface without applying the backup paint to the sliding surface material 4. For example,
A black resin containing carbon or the like is used as the foamable resin 6, and characters and the like can be expressed in white on the sliding surface.

As described above, the present invention has been described variously with reference to preferred embodiments. However, the present invention is not limited to this embodiment. For example, a magnetic material other than iron may be used as the reinforcing material 10 or the thickness of the reinforcing material 10 It goes without saying that many modifications can be made without departing from the spirit of the invention, such as by appropriately selecting

(Effect of the Invention) According to the method of manufacturing an injection ski of the present invention, the reinforcing material is made of a magnetic material, and the reinforcing material is sucked and positioned by the magnet simultaneously with the edge fitting at the time of injection molding. As a result, it is possible to perform reliable molding without causing displacement of the edge fittings, the reinforcing members, and the like.

Further, in this injection ski, the foamable resin is also injected and filled into the gap between the reinforcing material and the lower surface component such as the sliding surface material, so that the binding property between the reinforcing material and the lower surface component and the foamable resin is improved. It has significant effects such as improvement.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a method for manufacturing an injection ski according to the present invention, FIG. 2 is an explanatory view showing an embodiment of a reinforcing member, and FIG. 3 is an explanatory view showing a conventional manufacturing method. is there. DESCRIPTION OF SYMBOLS 1 ... Lower mold, 2 ... Upper mold, 3 ... Edge fitting, 4 ... Sliding surface material, 5 ... Upper surface component member, 6 ... Foaming resin, 7 ... Mesh reinforcing material, 8 ... ... magnet, 10 ... reinforcement, 12 ... through hole, 14 ... projection.

Claims (2)

(57) [Claims] 1. An injection ski plate comprising a foamable resin injected into a gap between a lower surface component and an upper surface component of a ski, and a reinforcing material bonded to an inner surface of a lower surface component such as a sliding surface material. The reinforcing member is formed of a magnetic material in a thin plate shape, and a through hole is formed on the reinforcing member to allow a foamable resin to pass therethrough, and the reinforcing member is mounted on a lower surface component such as the sliding surface member. An injection ski, wherein a small projection is provided between the lower surface component and the lower surface component to leave a certain gap, and the lower surface component is integrally bonded via the reinforcing member. 2. A manufacturing method in which a foamable resin is injected and filled into a gap between a lower surface component and an upper surface component of a ski, and a reinforcing material for reinforcing the lower surface component is joined to an inner surface of the lower surface component such as a sliding surface material. In the method for manufacturing an injection ski, a lower surface component such as an edge fitting, a sliding surface material, etc. is arranged in a lower portion of a lower die, and a thin plate is formed on the lower surface component by a magnetic material and foamed. A through hole for allowing the conductive resin to pass through is provided, and a reinforcing material provided with small projections for providing a certain gap between the lower surface component and the lower surface component when placed on the lower surface component such as the sliding surface material is used. Placed, pressing the upper surface component with an upper mold, adsorbing and positioning the edge fitting and the reinforcing material by a magnet arranged in a lower mold, and forming the upper surface component with the lower surface component. In the gap and in front Method for producing injection ski, characterized in that integrating the foamable resin injection filled with into the gap between the reinforcing member and the lower surface components.