CZ289591B6 - Vulcanizing press chamber - Google Patents

Abstract

The suggested chamber (1) of a curing press comprises an upper section (11) and a bottom section (12), whereby the latter contains a sectional mould (2) and optionally heating plates (3). The chamber (1) is provided with at least one outlet (4) being preferably disposed in said upper section (11).

Description

Curing press chamber

Technical field

The invention relates to a vulcanizing press chamber consisting of an upper and a lower part, which comprises a split mold and optionally a heating plate.

BACKGROUND OF THE INVENTION

The chambers are usually heated by steam, which is usually fed to heating plates, on which the individual parts of the mold are fixed. Sometimes steam is fed directly into the chamber and heats the mold immediately. Another embodiment of the chamber is designed as a heat-insulating cover in the shape of a hatch and the mold is heated directly by steam heaters placed in the mold body. Heating plates are rarely heated by electric current. All known mold heating solutions aim to vulcanize a stored tire in a controlled manner. Heating of the mold releases light hydrocarbons containing individual layers of rubber as well as components supporting the bonding of the individual rubber layers to each other and to the reinforcement. Also, the release coating that is provided with the mold before each insert of the workpiece causes the release of light hydrocarbons as well as flue gases. Furthermore, compounds of chemical additives and dusts are released during the vulcanization. All these substances are already harmful to health and even have carcinogenic effects in the mixture. The working environment near the vulcanizing presses is considerably ecologically burdened both in the air and in the deposited dust particles, which are repeatedly swirled. From the chamber, this mixture consisting of the described vapors and dust is most released simultaneously with opening. Their turbulence is further enhanced by their temperature and, last but not least, by the use of compressed air for cleaning the mold itself.

SUMMARY OF THE INVENTION

The vulcanizing press chamber according to the invention consists of an upper and a lower part which comprise a split mold. If necessary, it contains heating plates. The chamber is provided, preferably in the upper part, with at least one outlet. Such a chamber allows removal of undesirable substances from the mold outside the workplace, before its opening.

In order to control undesirable substances before or simultaneously with opening of the chamber, it is advisable to provide the outlet with a closure.

It is suitable to connect the outlet to a vacuum source, which can be eg. central exhaust, which can be equipped with air conditioning with filters.

If the upper part of the chamber performs a stroke movement simultaneously with the lateral movement and the outlet is on the upper part of the chamber, then it is necessary to connect the outlet to the vacuum source with a flexible pipe, such as e.g. armored hose.

If the upper part of the chamber only performs vertical movement and the outlet is on the upper part of the chamber, then it is sufficient to connect the outlet with the vacuum source through a telescopic pipe.

In some cases it is sufficient to provide the outlet with a ventilator and then exit it as needed outside the workplace.

-1 CZ 289591 B6

Description of the drawings

Fig. 1 is a partial cross-sectional view of a chamber whose outlet is connected to a vacuum source via a flexible conduit; Fig. 1 is a partial cross-section of a ventilator outlet shown in Fig. 2; 3.

Description of an exemplary embodiment

The chamber 1 of the vulcanizing press consists of an upper part 11 and a lower part 12. Inside the chamber 1 is a split mold 2. Each part of the split mold 2 is mounted on a heating plate 3. The upper part 11 of the chamber 1 is provided with an outlet 4 from the side. . The outlet 4 in the embodiment of FIGS. 1 and 3 is provided with a closure 5, which may preferably be an electromagnetically operated slide. In these embodiments, the outlet 4 is connected to a vacuum source 6, which is, for example, a central suction, whose cyclone, filters and air fan are located away from the workplace to minimize noise. If the upper part 11 simultaneously performs vertical and horizontal movement, the outlet 4 is connected to the vacuum source 6 by a flexible conduit, which may for example be an armored hose. If the vulcanizing press chamber 1 is designed so that the upper part 11 performs only vertical movement, then it is suitable to connect the outlet 4 to the vacuum source 6 by a telescopic pipe 42. In the embodiment of Fig. 2 the outlet is provided with a fan 7 away from the workplace, for example on the roof. An outlet 4 may also be provided with a lower part 12 of the chamber 1, which is advantageous from a constructional point of view because the lower part 12 does not move but because of the physical properties of the exhausted substances which are predominantly lighter air

When the chamber 1 is closed, there is usually no need to suck out the substances, since in the chamber 1 heated by the heating plates 3 the pressure is close to atmospheric pressure. Opening the chamber 1 by lifting the upper part 11 and thereby moving it away from the lower part 12 releases undesirable substances from the open mold 2, and it is therefore advisable to start suction at the same time as opening the chamber 1 or shortly in advance. This moment is determined by opening the closure 5 and thereby connecting the outlet 4 with the vacuum source 6 while bending the flexible pipe 41 or retracting the individual parts of the telescopic pipe 42. Alternatively, the fan 7 can be switched on at this point. equipment, which is not shown processing and preferably outside the building where the workplace with vulcanizing press is located.

Claims (6)

Curing press chamber (1) comprising an upper and a lower part (11, 12), which comprises a split mold (2) and optionally a heating plate (3), characterized in that it is provided with at least one outlet (4), preferably in its upper part (11). Chamber according to claim 1, characterized in that the outlet (4) is provided with a closure (5). A chamber according to claim 1 or 2, characterized in that the outlet (4) is connected to a vacuum source (6). Chamber according to claim 3, characterized in that the outlet (4) is connected to the vacuum source (6) by a flexible pipe (41). A chamber according to claim 3, characterized in that the outlet (4) is connected to the vacuum source (6) by a telescopic conduit (42). Chamber according to claim 1 or 2, characterized in that the outlet (4) is provided with a fan (7).