DE1579191C - Vulcanizing mold for producing a sole or a heel - Google Patents

Description

Fig. 3 shows a section as in Fig. 1 through a Form with a differently designed sole and

FIG. 4 shows a section along the line IV-IV in FIG. 3.

In the form of FIG. 1, a sole 1 without a heel is produced, which is thickened on the front part.

Crossing ribs 2 are provided for cushioning the sole, and one is used for production Mold plate 3 with a mold cover 4. The rubber mixture is injected through a spray channel 5 in a mold cavity 6 is pressed. For the attachment of an injection press, not shown, 4 is in the mold cover a recess 7 incorporated. The injection channel 5 is extended by a mouthpiece 8 so that it extends up to extends in the vicinity of the opposite mold wall 9. When pressing in the rubber mixture If the material first spreads along the mold wall 9 before it penetrates between the ribs 2, then so that air inclusions, if they occur, predominantly on the surface 10 of the sole 1 on the foot side Form wall lie.

In the case of the vulcanizing mold according to FIG. 3 is the deepest Place the mold wall 9 in the area of the shoulder, so that the injection channel 5 with the mouthpiece 8 is central is provided in the room for the paragraph. As previously described, the material initially slides here along the mold wall 9 and fills against the injection direction 11 shown by an arrow Mouthpiece 8 has in this vulcanization form at the same time the shape that is required to in the paragraph to provide a recess to reduce the sole weight. The mouthpiece 8 thus forms purely externally a rib.

When the mold is opened by tearing off the material in the injection channel 5 from the Sole 1 on this resulting wart lies in depressions in the sole 1 and does not need a special one Operation to be removed.

Instead of the mold cover 4, certain changes to the shape of the mold plate 3 can also be used a listed shoe upper can be stretched so that the sole 1 is simultaneously with the manufacture connects to the upper part of the shoe. The mouthpiece 8 is given a shape similar to a hollow needle and is drilled through a hole introduced into the mold cavity 6 in the last.

1 sheet of drawings

Claims (4)

i 579 191 1 2 solved that the injection channel is extended ver by a mouthpiece to claims: in the vicinity of the opposite mold wall. The rubber mixture is added 1. Vulcanization mold for producing a sole next to the zones that will later be visible on the shoe or a heel made of rubber, with two an 5 outer surface of the sole or heel and flows the shape of the sole or the heel corresponds to the top to the foot-side surface of the sole, where in the The final phase of the mold filling process surrounding the mold cavity is on the light mold halves, the ones raised towards the foot form the gas bubbles. Near the foot side The side of the sole or the surface adjacent to the heel interfere with any bubbles that may occur Zende mold half an injection channel for injection practically no. In contrast, the zen of a vulcanizable rubber mixture tread and the side surface of the sole or the having, characterized in that the paragraph is kept free of gas bubbles. the spray channel (5) through a mouthpiece (8) to It does not matter whether the the running-side surface of the in the vicinity of the opposite mold wall sole forming mold wall, for example in the manufacture (9) is extended. 15 position of molded soles through the molded cover 2. Vulcanizing mold according to claim 1, characterized or whether in the production of so-called, that the extended spray channel is called Vulka soles, which are attached directly to the footwear (5) to which the mouthpiece is formed in the direction of injection (11), the molded cover is made from the (8) the most distant point of the given shoe upper exists. The rubber compound Opposite mold wall (9) opens. 20 is in the latter case through the last in 3. Vulcanizing mold according to claims 1 pressed the mold cavity, wherein the for insertion or 2, characterized in that the extending injection channel is perforated insole later Gert spray channel (5) in the middle on a perpendicular to can be easily closed. Injection direction opposite mold wall - By injecting the rubber raw material surface opens out. 25 schung up to the vicinity of the running side of the sole 4. Vulcanizing mold according to claim 3, characterized in that the mold wall is formed by the injection nipple characterized in that the mouthpiece (8) sunk deep into the sole and at its opening of the mold The outer surface does not have to be slightly tapered in the spraying direction (11) by a subsequent operation is. ■ be removed. 30 Although it is known that in the manufacture of pot like sleeves remove the material from the recessed To inject the back into the mold, but the material enters the mold wall and becomes The invention relates to a Vulkanisier- not to the opposite of the entry point form for producing a sole or a heel 35 wall, as it is according to the invention with the help of the made of rubber, with two spray ducts that are elongated to the shape of the sole. or the mold cavity corresponding to the paragraph A further development of the basic idea is enclosing mold halves, with the to the to be recognized therein that the elongated injection channel to The side of the sole or heel that is placed on the foot is furthest away from the side in the spray direction of the mouthpiece adjoining mold half has an injection channel for a 40 distant point of the opposite injection of a vulcanizable rubber mixture leads to the mold wall, having. This ensures that the injected When injecting a rubber compound into a rubber compound from the running-side surface a mold cavity are air pockets or mold walls that form the sole conclusions of other gases in the form of 45 in the direction of the spray from the deepest point Bubbles cannot always be avoided, which usually only fill up when filling. Post-processing of the finished piece, for example another advantageous further development of the when cleaning the basic idea already attached to the shoe lies in the fact that the extended Sole can be exposed and thus recognized. The Er spray channel is centered on a perpendicular to the spray direction The certificate is then usually unusable. Measure 50 direction opposite mold wall surface opens, Men for improved gas evacuation are satisfactory up to- When the rubber mixture penetrates, it spreads Not used in mass production, as there are fine drainage channels at the opposite end clog easily and larger drainage channels out a mold wall surface and reached about the same time Condition post-processing. the lateral boundaries of the mold cavity, The invention is therefore based on the object 55, according to which the filling of this cavity is carried out by climbing on a mold for the production of soles and heels with approximately the same level,
In order to facilitate the extraction of the mouthpiece from the avoidable bladders there, the vulcanized sole or heel, where it is least disturbing, must be designed in such a way that the vulcanized sole or heel in series production is easier. For this, in one embodiment of the vulcanizing mold, the len and heel the foot-side surface is suitable because the mouthpiece is designed in such a way that it is not slightly tapered in the direction of injection either by subsequent machining or surface.
wear and tear will expose the inclusions. Embodiments of the invention are illustrated by a further object, which is illustrated in the drawing. It shows
Fig. 1 shows a longitudinal section through a vulcanizing mold shown schematically on the outer surfaces of the sole or the heel with the vulcanizing mold located therein. Sole, According to the invention, the object in a Fig. 2 is a section along the line H-II of the Vulcanization mold of the type mentioned at the outset thereby Fig. 1,