DD139521B1 - METHOD AND DEVICE FOR MANUFACTURING PLASTIC SKI, IN PARTICULAR KINDERSKI - Google Patents

Description

2092 ОД-i-

Title of the article: ·

Method and device for producing plastic skis, in particular children skis

Anwendungsgeoiet aer invention

The invention relates to a method and an apparatus for producing plastic ski, in particular children's ski, wherein the core of the ski is produced by curing a foamable plastic material, for example polyurethane.

Characteristic of the known technical solutions

From DS-GBM 7501231 it is known to produce plastic skis with foam core in one mold. In this form, all components of the ski, such as sliding sole, top lining, edges and the like inserted and subsequently foamed the mold with a foamable plastic material and thus made the ski

A two-part housing form is described in DE-OS 2 I3O 279 »this are recesses for receiving the ski cover mounted in the top box«, Furthermore, the housing shape is chosen so that a ski base in multiple width can be produced «, From this ski base are the Sinzelski cut

It is also known to use prefabricated, foamed plastic cores for the manufacture of plastic skis which have been bonded, in particular bonded, to the G-conductive sole and top covering as well as to other components.

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Another possibility for the production of plastic ski according to DE-GBM 7440561 is that in a supporting structure, which has a housing in the shape of the ski, a foamable plastic material is introduced and cured * The housing forms the contour of the ski and consists of Oberbelag, Unterbelag as sliding sole and Seitenwangeno

The above-mentioned method for the production of plastic ski have the following basic disadvantages: First, the production of skis is very labor intensive, since in all processes the sole of the ski must be manufactured separately and either glued to the core or inserted into the mold or _o be used as the bottom cover of the supporting structure of a ski case. These will be the appropriate technical complexity of devices needed, for example for the production of Gleitsohlen ₀ Second, there is no reactive bond between the slide plate and foamed core, Therefore, there is a danger of cutting aer sliding sole "

Object of the invention

The object of the invention is to develop a method and apparatus for the production of plastic ski, especially Kinderski, whereby the labor productivity in the production and the quality of the skis are increased.

Explanation of the invention of the invention

The invention has for its object to provide a process for the production of plastic ski, especially Kinderski, woboi the core of the ski by curing a foamable Piastwerkstoffes, such as polyurethane, is produced to develop, thereby reducing the amount of work to produce a SkI and the liability of the sole is donated to don skiers *

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According to the invention this is achieved by successively introducing plastic material into a casting mold as a sliding sole material in a liquid state and applying Paserarmierung in a known manner and pouring the foamable plastic material between the top covering and the liquid sole-bed material coated with the fiber reinforcement and subsequently casting material in a process and foamable plastic material to be cured «,

Furthermore, an apparatus for performing the method using a mold, consisting of upper box and lower box with Filmangußkanal and associated closure cone to develop.

According to the invention, this is achieved by the fact that mold inserts which correspond to the negative of the corresponding ski upper surface preferably are oriented on the bottom of the lower box and fixing elements are constructed as suction nozzles in the upper box.

Ausführungsbeispie1

The invention is explained in more detail in an embodiment in the drawing, the corresponding mold is shown in cross-section The most expedient form of realization of the invention is when a kunstwerksskigrundkorper is produced in Mehrrachbreite a Einseiski in a mold, which after its removal along the ski direction in SinzelsKi For this it is necessary that the mold, consisting of a lower box (1) and a top box (2), has the multiple width of a single needle in order to be able to produce the plastic basic body. " In the lower box (1), which has the depth of the ski without top covering ('/), a profiling by means of a form inserter (3) », which is the ideal for the desired slip

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• Correspond to the ski's ski surface. The number of Formeinlegeг (3) depends, inter alia, on which Mehrfachereite an individual ski of Kunststoffskigrundkorper has β at the interface of the lower box (1) to the upper box (2) located in the lower box (1) FiImangußkanal (4) with locking cone (5) ° On the underside of the top box (2) are recesses (6) for receiving the top cover C7) incorporated The suction nozzles (8) in the upper box (2) serve to fix the top covering (V) after closing the mold ₀ After the usual introduction of a Release agent in the mold, the mold inserts (3) are inserted for the Soleo profiling. The upper covering (7) is inserted into the recesses (6) of the upper box (2)

To carry out the procedure is in the sub-box

(I) Reaction casting resin for the production of the sliding sole

(II) of the plastic body is coated »Next, a reinforcement (10) made of glass fiber fabric is applied« Next, the immediate closing of the mold during the reaction time of Reaktionsgießharzes the sliding sole (11) and pouring the foamable Reaktionsgießharzes over the Filmanguiskanal (4) which is subsequently closed via the closure cone (5). The foamable reaction casting resin expands by means of negative pressure v / ird via the suction nozzles (8). The foamable reaction casting resin forms the core (9) of the plastic body and bonds by adhesion or Reaction with the reinforcement (10), the reaction casting resin of the sliding cone (11) and the top coating (б) о The resulting plastic body is removed from the casting mold and divided into individual skis by longitudinal separation. The separating surfaces are then sealed. The method according to the invention with the associated device enables a high labor productivity in the production of plastic skis, since in a single-stage

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· The sliding sole is not manufactured as an individual part for the production of plastic skis. Furthermore, a reactive bond between ski core and sliding sole is created · It is particularly important to be able to produce a plastic skunk body from the method by separation into In addition to the further increase in productivity, there is an increase in quality due to the improved homogeneity of the ski core, since during filling of the core of the plastic body the rim zone problems for the subsequently produced oil by separation are relatively reduced.

Claims (2)

209 2 04 -6- Claim 1. A process for the preparation of plastic ski, in particular üinderski, wherein the core of the ski by curing a foamable PiasWerkstoffes, for example polyurethane, is prepared, characterized. plastic material is dai3 in a mold successively introduced as Gleitsohlenmaterial in the liquid state, and placed in a conventional? / else fiber reinforcement and the schäumDare plastic material between covering and with fiber reinforcement occupied flussigen Gleitsohlenmaterial is poured and cured in a process Gieitsohlenmaterial and foamable Plastwerkstorf hereinafter _e Device for carrying out the method according to item 1 using a mold consisting of upper box and lower box, which form the envelope for a JSinzelski or for a plastic body having the shape of a single ski in multiple width, in the lower loads or in the upper box or in both is usual in the amount of the closing surfaces of upper box and lower box recesses for receiving the upper lining are incorporated and a Filmangußkanal and an associated closure body are provided, characterized by that at the bottom of the lower box (1) mold inserts (3), which correspond to the negative of the corresponding Skigleitsohlenoberflache, are oriented and mounted in the upper box (2) Fixing elements are designed as suction nozzles (8) See 1 Ssite Drawings