JPS6162478A - Production of injection ski - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing an injection ski filled with foamable synthetic resin fingers.

(Prior Art) Injection skis are known in which the gaps between the upper and lower screen components of the ski are filled with foamable synthetic resin.

An overview of the manufacturing method for this injection ski can be found in Part 1.
As shown in the figure, there is a gap P corresponding to the thickness distribution of the ski core in the mold 1, and the ski lower surface component 3 including the edge fitting 2 and the ski upper surface component (fourth) are arranged, and this gap is P
This is done by injecting and filling a foamable synthetic resin liquid.

By the way, during manufacturing, the edge fittings 2 are integrated into a synthetic resin together with other constituent members to create a ski, so regulating the position of the edge fittings 2 is important for fluorine.

Conventionally, the position of the edge fitting 2 is normally controlled by placing a push pin 60 in contact with the upper surface of the edge fitting 2 on the inner wall portion 1a of the right or left side of the mold, as shown in FIG. 1
2, and the push pins 60 are used to secure the edge fittings 2 along the edge fittings 2.
Alternatively, as shown in FIG. 7, a pressing protrusion 70 that contacts the upper surface of the edge fitting 2 is integrally formed in a part of the inner portion 1b of the right or left mold, and the pressing protrusion 70 is fixed. The method used was to press and fix the edge fitting 2 on the bottom surface.

(Problems to be solved by Mitsuaki) However, the following problems exist in regulating the tearing surface of edge fittings using conventional manufacturing methods. When struck, holes or recesses caused by the push pins 60 or the push projections 70 remain on the side surface of the finished ski product, and water or the like penetrates, leading to rusting of the edge fittings and deterioration of gliding properties. In addition, holes and recesses are exposed on the side surfaces, which greatly impairs the appearance.

Therefore, the present invention solves such problems, and does not cause deterioration of edges such as rust even after long-term use, and has good sliding properties, good appearance, and excellent marketability. The object of the present invention is to provide a method for manufacturing an injection ski, in particular, by which a ski can be obtained.

(Means for solving the problem) The present invention is an injection ski! ! Regarding the method of sending
As shown in FIG. 1, first, the ski lower surface component 3 including the edge fitting 2 and the ski upper surface component 4 are placed in a mold 1 with a gap P corresponding to the thickness distribution of the ski core. At the same time, a part of the upper surface outer side of the edge fitting 2 is
and the said work 7 in which the inner wall of the left mold 6 was formed into a stepped shape.
It is characterized in that the injection ski is manufactured by continuously pressing and fixing with the locking surfaces 7 and 8 parallel to the two surfaces of the metal fitting, and injecting and filling the gap P with a foamable resin liquid.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

First, a mold to which the method of the present invention can be applied will be explained with reference to FIGS. 1 and 2. FIG. 1 is a longitudinal cross-sectional view of the same mold, and FIG. 2 is an enlarged view of section A in the middle of FIG. The mold 1 includes a lower mold 10, an upper mold 11, the right mold 5 interposed between these molds 10 and 11, and the left mold 6. The right mold 5 consists of an inner right mold body 12 and an outer support mold 13, and the left mold 6 consists of an inner left mold main body 14 and an outer support mold 15.
Consisting of

The right-hand main body X2 has an edge fitting 2 which presses a part of the outer side of the upper surface of the edge fitting 2 according to the method of the present invention at a relatively lower portion thereof.
The locking surface 7 is parallel to the surface. This locking surface 7 is a flat surface and is provided in the inner clasp of the right-hand type body 12 in a step-like manner. Further, the width S of the locking surface 7 is approximately 0.5 mm, which is a slight N method, and is formed to have approximately the same dimension in the longitudinal direction of the edge fitting 2. An inclined surface 12a protruding from the inner end of this locking surface 7 into the gap P is formed with a predetermined width, and the upper end of this ltQ inclined surface 12a forms a substantially vertical surface. The mold main body 14 is also formed in the same manner as the right mold main body 12, so that both are symmetrical.In the left mold main body 14, 8 is the above-mentioned locking surface, and 14a is an inclined surface, which is composed of 0 or more. The mold 1 produces an injection ski in which the lower part of the ski including the edge fittings 2 is offset outward by a predetermined width.

Next, a method for manufacturing an injection ski according to the present invention will be explained.

First, the ski-upper surface forming member 4 is placed on the inner surface of the upper mold 11 in the mold 1 as in the first recess. said component), t
l+ consists of an upper ABS resin sheet 30 and a lower internal reinforcing material 31 including glass cloth and the like.

On the other hand, on the inner surface of the lower mold 10, a ski lower surface forming member 3 is arranged. The component 3 is a lower sole material (polyethylene) 3
2 and its 1ili reinforcing material 33. which is narrower than this and includes glass cloth, etc. Furthermore, both of these 32.33
It consists of edge fittings 2, 2 that are closely arranged to sandwich the side edges of the . The edge fittings 2, 2 have locking edges 2a, 2a protruding inward on the inner upper part, and these locking edges 2a, 2a and the lower mold 10
while sandwiching the sole material 32 with each lock #12a and #2a.
An internal reinforcing material 33 is interposed between them.

In addition, the right mold 5 and the left mold 6 fix the edge fitting 2° 2 and the ski upper surface component 4, respectively. In other words, the outer part of the upper surface of the edge fittings 2, 2 is pressed and fixed by the locking surfaces 7 and 8 provided on the right and left main bodies 12 and 14, and the upper end notches of the right and left main bodies 12 and 14 are fixed. Both ends of the upper surface component 4 are clamped and fixed using the technique. In this case, the edge fitting 2.degree. 2 is simultaneously positioned by the right mold body 12 and the left mold body 14.

The above 1I11 <By assigning each configuration r, +(+, 13, 4), each 1111 configuration riB4.l 3 and ・
1, a predetermined gap P corresponding to the thickness distribution of the ski core is formed.

A desired injection ski can be fogged by using a known method of injecting a required resin liquid into the gap P by inserting a resin liquid injection nozzle (not shown) and causing foaming.

Next, a modified embodiment will be described with reference to FIGS. 3 and 4. Figure 7153 shows the circle Δ in Figure 1 according to the modified example.
FIG. 4 is a plan view of the lower die of a mold according to a modified embodiment. The modified embodiment differs from the embodiment shown in FIGS. 1 and 2 (basic embodiment) in that the lower surface of the edge fitting 2.2 is attracted by a magnet 40 embedded in the lower mold 10.This magnet 40 buried position = 4th
As shown in the figure, a plurality of skis are arranged at predetermined intervals along the edges p and 2, and the spacing is particularly close at the tips of the skis (shovel parts). Also, make sure that the upper end surface of the four-depth rectangular magnet 40 matches the upper surface of the lower mold lO, or it may be slightly L! I! Make a selection based on whether or not it will be destroyed. In order to embed the magnet 40 in the lower mold 10 in this way, at least the lower mold 10. Right-hand type 5. 4. Non-magnetic material such as col ξ nium alloy on the left mold 6. It is preferable to use i-fee. Due to the attraction action of the magnet 40, the edge fitting 2 can be positioned and fixed more reliably and stably.

Next, referring to FIG. 5, another modified embodiment of the present invention will be described. The figure shows circle A in Figure 1 according to another modified example.
It is an enlarged view of B1+. This modified embodiment differs from the modified embodiment described above in that the ski underside component 3 is modified. In other words, as shown in FIG.
P slope 34 (upper side) laminate 915 is sandwiched therebetween. F
There is a possibility that the RP slope may lift up especially when it is bent by a shovel part or the like, so it is possible to more effectively and securely and stably position and fix the slope than in the basic embodiment.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments.
Of course, many modifications can be made within the scope of the invention.

(Results of the Invention) As described above, the M'm method according to the present invention allows the thickness distribution of the ski core to be created within the mold by creating a desired gap (the lower surface of the ski including the edge fittings). ? 111 member and ski upper surface structure gl (a locking surface parallel to the edge fitting surface provided by distributing the shrine and forming the inner walls of the right and left molds in a stepped shape on the outer part of the upper surface of the edge fitting Since the injection ski is obtained by quickly pressing and fixing the ski, and injecting and filling the foaming resin liquid into the gap, the following technical effects are obtained.

First, there is no need for push pins or push protrusions that hold down the edge fittings as in the past, so there are no unnecessary recesses in the product, and as a result, even after long-term use, rust may occur due to penetration of water, etc. This does not cause any deterioration of the edge metal fittings due to this, and also improves chemotaxis.

Secondly, it is possible to improve the appearance of the ski without exposing the recesses and the like, and it is possible to obtain an injection ski with good marketability.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a mold to which the method of the present invention can be applied, Fig. 2 is an enlarged view of the Chunichi Yaja shown in Fig. 1, and Fig. 3 is a circle A in Fig. 1 according to a modified embodiment of the present invention. FIG. 4 is a plan view of the lower part of the mold according to a modified embodiment, FIG. 5 is an enlarged view of the circle A section in FIG. 1 according to another modified embodiment of the present invention, and FIG. and FIG. 7 are internal perspective views of a mold according to a conventional example. 1... Molding mold, 2, 2... Edge metal fitting 13...
・Ski lower surface component, 4...Ski upper surface groove formation g
+5 shrines, 5...right type, 6...left type. 7.8...Locking surface, 12...Right type main body. 14... Left type main body, S... Width of the locking surface.

Claims (1)

[Claims] 1. Arrange the ski lower surface component including the edge fitting and the ski upper surface component with a gap corresponding to the thickness distribution of the ski core in the mold, and place the outer part of the upper surface of the edge fitting, The inner walls of the right and left molds are continuously pressed and fixed by a locking surface parallel to the edge fitting surface provided by forming a stepped shape, and a foaming resin liquid is injected and filled into the gap. A method for manufacturing an injection ski.