DE3312544A1 - Means of noise reduction on concrete-stone moulding machines - Google Patents

Abstract

For reduction of the noise, caused by the impact of the mould on the vibrating table during the compaction operation, in other words in the vibration phase, the mould, in particular the mould frame 2, is provided with damping material or an elastic layer 5 which can consist of a natural or synthetic material, e.g. rubber, Vulkolan or latex, generally or another material, counter-sheets 6 being mounted on this coating for more intensive reduction of the noise radiation. In order then also to reduce the structure-borne noise transmission of the actual noise-generating mould insert 3 to the parts adjoining it, in other words the mould frame 2, mounting an elastic intermediate layer or coating in the same manner between these two parts is also to be envisaged. In order to guarantee a complete noise decoupling, the connection elements also, e.g. the screws 4, are advantageously provided with an elastic intermediate layer. In this manner, it is ensured that noise bridges no longer exist between mould insert 3 on the one hand and mould frame 2 on the other hand, and that these parts are acoustically completely decoupled from one another. As a result of this necessary decoupling, however, it is necessary to interconnect the mould frame 2 and the mould insert 3 detachably, as a result of which there is the further advantage that the mould frame 2 can be used for mould inserts of different stone profiles as well as of different stone heights ... Original abstract incomplete. <IMAGE>

Description

Hess Maschinenfabrik GmbH & Co KG 5909 Burbach-üJahlbach

Means for reducing wear on concrete block molding machines

The invention relates to means for reducing noise on concrete block molding machines, especially for noise insulation at concrete block farms in these machines.

The concrete parts are manufactured in molds. the end economic and partly for technological reasons, the residence time of the material and the product must be very high be short, but on the other hand it must not be so short that the concrete material melts or dissolves when stripping disintegrates. The necessary compression of the material, which is necessary for the high strength requirements

is currently most economically achieved by shaking and vibrating the concrete mass filled into the molds. This work process is very noisy, so that these machines are still among the loudest in use in industry. The level values are 1 m away from the systems at 100 - TT5 dB (A). In some cases, the sound power level L _ljJA is even L ... = 125 dB (A).

Competing processes and devices, such as compaction reach by pressing force are uneconomical and do not achieve the same stone quality. All Concrete molding machines have in common that they are shaken generated noise both from the machine parts that perform the vibrating process and from machine parts, who actually have nothing to do with the shaking process, comes. Both machine subgroups emit noise in a frequency range that is only caused by the unnecessary Harmonics of the vibration frequency necessary for production is generated. It is also significant that almost the entire Work noise of the machine only within a short phase of a work cycle, namely the shaking phase, entsiant, with a not inconsiderable amount of noise due to the impact of the mold on the wear plate of the vibrating table is given during the pouring in of the concrete mass.

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The object of the invention is now a means by which the above-described noise generation in concrete block molding machines largely limited and, on the other hand, the emission of this noise is attenuated to a minimum can.

N-ech a-sr invention is for noise reduction in concrete block molding machines In particular for the concrete block form of the machines possible that a mold frame and a Mold inserts that can be detachably connected to form a mold, as well as the connecting elements that releasably unite them e.g. connecting screws as well as essentially all of them

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Metal surface parts of the concrete block farming machine relative to other metal surface part resting on it, at least one of them with an elastic, noise-insulating coating are provided. The elastic coating is preferably made of latex or a natural or synthetic one Material with rubber, Vulkolan (registered trademark) and other suitable means, whereby expedient counter plates are applied to the coating of metal surfaces that do not touch one another. In this way, the noise emission becomes even more special Dimensions dampened. Due to the above-described coating of the mold frame and the mold insert, these are both Parts largely decoupled from noise relative to one another. To the

To be able to dampen the horrific impact noise as much as possible, j

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are between the mold and a wear plate elastic coating provided. To those from the noise Parts of the machine or the mold that are to be insulated can either be glued on or vulcanized on be. The coating is also useful on binding agents such as screws, in particular dereri ^ threadless shaft and head part vulcanized on. But it is also conceivable between two surface parts to be isolated from the noise, the coating as an elastic one Clamp plate and the like. For the special attachment of the elastic coating, especially to the, This is the area that is particularly subject to wear and tear appropriately provided with a reinforcing insert made of textile or leather parts and the like. A special embodiment is the wear plate on the surface of the vibrating table, the -a having elastic coating, arranged and van the underside of the vibrating table ago with fastening screws screwed to this. It is of course also conceivable that aine on the surface of the wear plate apply elastic coating, which is still special Dimensions is reinforced in order to withstand the impacting shape during operation and at the same time to dampen the impact to reduce noise.

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The invention is based on the drawing in which
an embodiment of which is shown,
illustrated in more detail.

Show it:

Fig. 1

Fig. 2

a side view of a two-part mold for making concrete blocks in a partial section,

a plan view of the form according to FIG. 1,

3 is an enlarged partial side view j of a molding frame with one therein; attached mold insert in section: according to FIG. 1 - circle X -;

Fig. 4 is another enlarged partial side view of a connection of the farm frame with the mold insert in
Cut, and

Fig. 5 a on a vibrating table, which ver with an elastic coating can be seen, screwed on cover plate.

BATH ORIGINAL

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In Fig. 1, 1 is a two-part mold consisting of a mold frame 2 in a mold insert 3. These two parts are connected via connecting elements, in the present case with screws 4 with an intermediate layer an elastic material, for example made of latex or a suitable one natural or synthetic material as an elastic coating 5 releasably together to form a whole 1 united. On the coating of the form are to achieve a so-called constrained damping and thereby an even more intensive reduction in the noise emission, counter plates 6 are applied. The two-part Form allows the exchange of mold inserts without any special effort, so that molded stones of different Size and design can be made. The noise decoupling of these combined Molded parts 2 and 3 are a partial view in an enlarged representation from FIGS. 3 and 4 evident. The mold insert 3 is in this case via angled holders 10 which are attached to the outer sides 8 of the mold insert are welded with brackets OK, which in turn are attached to the outer sides 9 of the mold frame 2 are welded, by screws 4 with the interposition of the elastic coating 5 as much as possible Noise decoupled, releasably connected to one another to form 1.

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The bracket 10 indicated in Fig. 4 is intended to have a circumferential frame in which the mold insert used and to be screwed therein. Here, the elastic mount is in the way between the two Forir.teile 2 and 3 arranged that their Metal parts cannot come into direct contact with one another »Due to this sound decoupling of one relative to the other Farm part can considerably reduce the sound radiation.

For further noise insulation, especially when the mold 1 hits a vibrating table 11, there is a arranged wear plate 12 provided on its surface 13 with an elastic coating 5 This is together with the wear plate from the underside 14 of the vibrating table with a fastening screw 15 releasably attached to the vibrating table together with the wear plate. To reinforce this dem Coating that is subject to particular wear can be provided with inlays 16 made of textile or leather be.

It is of course also conceivable to have an elastic coating on the underside of the mold, on the so-called Service side, to be attached, so that a coating of the

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Uerschiüeißbleches with an elastic material itself may be unnecessary.

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Claims (1)

YY I Z Hess Maschinenfabrik GmbH & Co KG
5909 Burbach-UJahlbach Means for reducing noise on concrete block molding machines Claims 1) Means for noise reduction in concrete block molding machines, in particular for the concrete block mold, characterized in that a mold frame (2) and a mold insert. (3) ,. which can be releasably connected to form a form (1), as well as the releasably connecting elements, for example connecting screws (4) as well as from im
essentially all metal surface parts of the concrete block molding machine facing each other and separately touching each other relative / to the other metal surface part resting on it, at least one of them
are provided with an elastic, noise-insulating coating (5). - a 2) Means for reducing noise in concrete block making machines according to claim 1, characterized in that the elastic coating (5) is made of latex or a natural or synthetic material such as rubber, Vulkolan (registered trademark) and the like. 3) means for reducing noise in concrete block molding machines according to claim 1 and 2, characterized in that
counter plates (6) are applied to the coating (5) of metal surfaces that do not touch one another. 4) Means for reducing noise in concrete block making machines according to claim 1 and 2, characterized in that the coating (5) of the mold frame and the mold insert (3) is noise-decoupled. 5) means for reducing noise in concrete block molding machines according to claim 1 to 4, characterized in that
an elastic coating is provided between the mold (1) and a wear plate (12). B) Means for reducing noise in concrete block making machines according to claim 1 to 5, characterized in that the COPY 33125U elastic coating (5) on the parts of the machine to be isolated from noise bzu. shape glued on and / or clamped between two surface parts as an elastic plate and the like . is. 7) Means for reducing noise in concrete block making machines according to claim 1 to 5, characterized in that the elastic coating (5) on the wall of the Molded parts or their connecting means vulcanized on is. 8) Means according to claim 1 and some of the preceding Claims, characterized in that the surface of the vibrating table (11) has an elastic coating is provided. 9) Means according to claim 1 and some of the preceding claims, characterized in that a wear plate (12) on the surface of the vibrating table (11), which is provided with the elastic coating (5), which is screwed onto the vibrating table with fastening screws (15) from an underside (14) of the vibrating table is. YY I 1ü) means according to claim 1 and some of the preceding Claims, characterized in that the elastic coating with a reinforcing, against wear strengthening insert is provided, for example, made of textile or leather. 11) means for noise reduction according to claim 1 and 9 and 10, characterized in that the wear plate (12) on its surface (13) with an elastic Coating (5) provided, arranged directly on the surface of the vibrating table (11) and exchangeable is screwed against another on this from below by means of fastening screws (15). copy]