JPS60168476A - Production of ski board - 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 The present invention relates to a method for manufacturing skis, and more specifically, it is possible to simultaneously fix a front protector and a rear protector by injecting resin liquid, and to reduce the occurrence of burr and save labor in the finishing process. The present invention relates to a method for manufacturing a ski that allows the upper surface of the ski to be fixed smoothly without creating scratches on the upper surface of the ski.

Injection skis have been developed in which a foamable synthetic resin liquid is injected into the gap between the upper and lower surface components of the ski.

There are various methods of injecting the resin liquid described in 2. However, one method is to fix the front protector and the rear protector at the same time as the resin liquid is injected. The upper and lower ski screen components are arranged with a gap between them, and a front protector and a rear protector are respectively held at the front and rear ends of the ski upper and lower screen components, and as shown in FIG. A method for manufacturing skis has been developed in which a resin liquid flows through a resin liquid passage A provided along the front protector 10 and a resin liquid passage B from a notch 12 provided on the top surface of the front protector 10 (Japanese Patent Publication No. 58-4926
No. 7).

When using this method, since the front and rear protectors do not obstruct the flow of the resin liquid, it has the advantage that both protectors can be assembled in advance into the mold and fixed at the same time by the resin liquid injected as described above. . However, since the resin liquid flows along the outer periphery of the front protector 10, long and thick burrs are generated on the side walls of the ski after molding, and the finishing process to remove these burrs is extremely troublesome and requires a lot of labor and time. This method requires time-consuming work, increases costs, and has the disadvantage that the side walls cannot be beautifully finished.

Also, the notch 12 for the resin liquid passage B is located in the front protector 1.
0, when the resin liquid passes through the notch 12 and flows in, the resin liquid receives strong direct resistance from the lower surface of the ski upper surface component (the lower surface of the ski upper surface component (Because the reinforcing material such as glass cloth is inserted, the unevenness is particularly severe.) Not only is it difficult to obtain a smooth flow of resin, but the pressure of the resin liquid when passing through the notch 12 causes the structure of the upper surface of the ski to change. There is a problem in that the member is pushed up and a gap is created between the front protector 10 and the ski upper surface component, resulting in the occurrence of cracks. Furthermore, there are various disadvantages such as the formation of dents in the ski upper surface component corresponding to the notch 12 due to the resin whiskers after molding.

In addition, in the conventional example described in 2, resin injection pressure is insufficient in the resin liquid passage B, and passage A is inevitably required, and if only the resin liquid passage is used, the resin will not flow to the inside of the front protector 10. is insufficient, and passage B is required as an auxiliary passage.In the end, a side passage is essential, and as a result -
All of the defects listed below will occur.

The present invention has been made in view of the above-mentioned difficulties, and its purpose is to simultaneously fix the round and front and rear protectors by injection of resin liquid, to reduce the occurrence of firmness, and to simplify the finishing process. In addition, the purpose is to provide a method for manufacturing skis that does not cause deformation of the ski upper surface components, and the feature is that a gap corresponding to the thickness distribution of the core is provided in the mold, and the ski A method for manufacturing a ski in which upper and lower screen constituent members are arranged and a foamable synthetic resin liquid is injected and filled into the gap, wherein a front protector and a rear protector are respectively held at the front and rear ends of the ski upper and lower screen constituent members; A through hole is provided in either the front protector or the rear protector to serve as a resin injection port, and a resin liquid is injected into the gap from the resin injection port.

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

In FIG. 2, 10 is a BS resin sheet, 22 is an internal reinforcing material made of glass cloth, etc., and these two components form the ski upper surface component. Reference numeral 24 designates a sole material, 26 a lower surface reinforcing material, and 28 an internal reinforcing material made of graph cloth or the like, and the above three components constitute the ski lower surface component. The above-mentioned ski lower surface component and ski upper surface component are arranged in a mold consisting of a lower mold 30 and an upper mold 32 so as to have a predetermined gap corresponding to the thickness distribution of the core of the ski. Ru. 34 is an edge fitting, and 36 is a side plate. As shown in FIG. 3, a double-sided adhesive tape 38 as an adhesive material is attached to the outer surface of the side plate 36, and when placed in the mold, the double-sided adhesive tape 38 seals the inner wall of the lower mold 30. It is fixed with adhesive to prevent it from collapsing inward. Also, the side plate 36 is inserted between the edge metal fitting 34 and the AnSnS resin sheet roller 2o, and the double-sided adhesive tape 38
When it is fixed to the inner wall of the lower mold 30, its lower surface presses the upper surface of the edge fitting 34, fixing the edge fitting 34 in a predetermined position, and preventing the edge fitting 34 from moving even when resin liquid is injected.

FIGS. 4 and 5 are explanatory views showing examples of the front protector 4o1 and the rear protector 42, respectively. The front protector 40 and the rear protector 42 are arranged in a mold so as to be held at predetermined positions at the front and rear ends of the ski upper and lower surface screen constituent members, respectively. In this case, as shown in FIG.
A notch 44 is arranged so that the 6 end faces are in contact with the end face of the front protector 40, and the cutout 44 is provided on the lower face of the front protector 40.
The front protector 40 is positioned by inserting and coupling the front end of the edge fitting 34 to the front protector 40. Further, the rear protector 42 is positioned so that the rear end of the two-face component of the ski is accommodated in contact with a stepped portion 46 provided on its upper surface, and is pressed from the rear by a holding jig 48. held in place. Note that 50 is a fixed piece provided on the front protector 40 and the rear protector 42.

As shown in FIGS. 5 and 7, the rear protector 42 has an elongated hole-shaped resin injection port 52 opened at approximately the center in the vertical direction and approximately at the center in the elongated direction.

Further, the presser jig 48 has a resin channel 54 formed in its front end face with an elongated opening to match the elongated resin injection port 52, and with its rear end face opening in a circular shape. . Furthermore, the holding jig 48 is formed into a split mold so that it can be split along the resin flow path 54. Reference numeral 56 designates a resin liquid injection tube, the tip of which is inserted into the circular portion of the resin flow path 54, and the rear end of which is connected to a resin liquid injection nozzle 58.

After the above-mentioned members are arranged in the mold so that they are located at the predetermined positions, the resin liquid is injected from the resin liquid injection nozzle 58 via the resin liquid injection tube 56, the resin flow path 54, and the resin injection port 52. A desired injection ski is obtained by injecting the resin liquid into the gap between the constituent members of the upper and lower surfaces of the ski and causing it to foam.

Therefore, by fixing the fixing pieces 50 in the resin liquid, the front and rear protectors are simultaneously fixed at predetermined positions on the front and rear ends of the upper and lower ski surface components. After foaming is completed, the resin liquid injection tube 56 is removed from the resin flow path 54 and the resin liquid injection nozzle 58 and discarded, and the holding jig 48 and the resin liquid injection port 52 are removed by swinging the holding jig 48.
The resin between the parts can be bent and folded, and the resin liquid injection port 52 can be completed by simple finishing. Note that the holding jig 48 may be split along the dividing line to expose the resin filled in the resin flow path 54, and finishing may be performed by cutting or the like. Further, the holding jig 48 does not necessarily have to be formed into a split mold, but if the resin flow path 54 is formed in a tapered shape, the resin clogged inside can be easily pulled out.

FIG. 8 shows another embodiment of the injection method. As in this embodiment, the resin liquid injection nozzle 58 can be directly fitted into the resin channel 54 to inject the resin.

However, as described above, it is better to interpose the resin liquid injection tube 56 to prevent the resin liquid injection nozzle 58 from moving toward and away from the resin flow path 5.
4, the manufacturing process can be further simplified.

In addition, in the method of the present invention, the resin injection port 52 may be provided in the front protector 40 instead of the rear protector 42 to achieve the same effect.

As described above, when using the method of the present invention, the resin injection port is opened at approximately the center of the front protector or the rear protector and the resin liquid is injected, so that the resin liquid receives almost no resistance from the constituent members of the upper and lower surfaces of the ski. It is injected extremely smoothly, eliminates the need for two types of resin liquid passages as in the past, and simplifies the mold. It also simplifies the finishing process with almost no resin flakes, allowing skis to be beautifully finished. Cost reduction can be achieved. Further, there is no concave surface formed on the upper surface of the ski due to resin whiskers as in the prior art. Furthermore, it has the advantage that the front and rear protectors can be fixed at the same time as in the conventional case.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments (it goes without saying that many modifications can be made without departing from the spirit of the invention). It is about.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a conventional resin liquid injection method. Fig. 2 is a sectional view showing the ski components assembled into the mold according to the method of the present invention, Fig. 3 is an explanatory view of the side plate, Fig. 4 is an explanatory view of the front protector, and Fig. 5 is an explanatory view of the front protector. It is an explanatory view of a rear protector. FIG. 6 is an explanatory view showing the relationship among the side plate, edge fitting, and front protector, and FIGS. 7 and 8 are explanatory views showing the resin liquid injection method. 10... Front protector, 12... Notch. 20... ^BS resin sheet, 22... Internal reinforcement material, 24... Sole material, 2G... Bottom reinforcement shrine, 28.
...internal reinforcement material, 30...lower mold, 32...upper mold,
34... Edge metal fitting, 36... Side plate, 38...
Double-sided adhesive tape, 40...Front protector, 42...
Rear protector, 44... Notch portion, 46.0... Step portion, 48... Holding jig, 50... Fixing piece,
52...Resin injection port, 54...Resin flow path, 56...
・Tube for resin liquid injection. 58...Resin liquid injection nozzle. Patent Applicant Co., Ltd. Swarovski Representative Tetsuzo Maruyama 1 Figure 1 (a) 2 Figure 2 34 28 26 24 Figure '3 Figure 4 Figure 5 μ i) O Figure 6 036 434

Claims (1)

[Claims] 1. A ski in which the ski upper and lower surface components are arranged in a mold with a gap corresponding to the thickness distribution of the core, and the gap is injected and filled with a foamable synthetic resin liquid. In the method for manufacturing a board, a front protector and a rear protector are respectively sandwiched between the front and rear ends of the upper and lower ski screen constituent members, and a through hole is provided in either the front protector or the rear protector to serve as a resin injection port. . A method for manufacturing skis, characterized in that a resin liquid is injected into the gap from the resin injection port.