Special molds

Special molds

Endless variety

Particular projects require individual solutions. Do you need curbs with vertical and horizontal displacement protection, large format systems with false joints or contours in the underside of the block?

Special molds

Special products can also be realized with KOBRA mold technologies. We work closely with you to develop individual designs for implementing answers to all challenges in modern mold making.

The matching frame for any insert.

Best in technology

All KOBRA technologies are united under the brand KOBRA POWER. The construction of the concrete block mold depends on the stone systems to be manufactured as well as the individual conditions in the plant. Therefore, for each product type exist a matching technology, which is adapted to the products processes specific demands.

POWER »Basicline 1™« is the classic mold for the production of medium and high paving products.

The mold bottom of the POWER »Basicline 2™« comprises a precisely machined mold insert made of block material with all-round cavities shaped to hold the flange assemblies including rails.

POWER »Boltline 1™« is used for all high products, such as hollow block, solid block, curb and round curb molds.

The POWER »Boltline 3™« is used for the production of paver and slab systems from 300mm edge length.

On the outsides of a POWER »Dynamic 1™« mold there are all round trapeziums, via which the vibrating insert is clamped in bolted frame elements by means of a rubber bearing.

POWER »Moduline 1™« comprises of an insert frame joint with tongue and groove, whose vibration behavior on the one hand helps to achieve improved compaction of the concrete, and on the other hand, due to the decoupled insert, it achieves a damping effect, which can reduce wear of the mold.

The mold bottom of a POWER »Moduline 2™«- mold is made up of only three components – the insert, the flanges and the wear plates.

Unlike the other design options of this technology, POWER »Moduline 3™« has a stable one-piece frame, which is bolted onto the insert vertically.

POWER »Replace™« was developed for the production of small series products. The frame and insert in the mold bottom are joined by a retainer lock.

KOBRA developed the POWER »Solidline 1™« for products such as slope stabilization blocks.

For perfect results

Best in precision

With the KOBRA hardness standards, extremely high hardness can be achieved and thus particularly robust and wear-resistant concrete block molds can be produced. Different hardening processes are used, depending on the mold technology, helping to achieve smooth production processes.

Further development of the in-house carbo hardening technology enables the surface hardness to be increased to 68 HRC.

All hardness standards labeled Optimill have milled cavity walls in the mold insert, which ensure perfect angularity in the cavity. The tolerances are smaller than +/- 0.3mm. The more exact and smooth the cavity, the more exact the block!

»Optimill nitroTM« MOLD describes the nitriding process that can be used primarily for mold inserts that are high, welded and are particularly susceptible to warping.

»Flamecut carbo™« MOLD is particularly suitable for rustic briquet and tumbled paver blocks, in which service life is prioritized over perfect dimensional accuracy.

With this production method, KOBRA combines the advantages of state-of-the-art milling and hardening technology with the tried and tested options of flame-cutting technology. »Optiflame carbo 68 plus™« molds have flame-cut cavity contours and exactly milled base layout.

Optiflame describes the use of milling and tried and tested flame-cutting technology together in a mold. The cavity contours are flame cut, the base layout is precisely milled.

Improvement in the wear resistance of concrete block molds with completely flame cut and manually polished cavity walls is achieved using the »Flamecut carbo 68 plus™« hardening process which, depending on the production parameters in the precasting plant, can make a decisive contribution to extending the service life.

For specific requirements

Best in pracitcal details

The stone´s product quality can be increased by the installation of KOBRA FEATURES into the concrete block mold. Each product has its individual and special demands on the mold. In order to meet these requirements, we have developed useful features, which optimally support your production processes.

The FEATURE »Flexshoe™« is a useful compacting aid, especially for large format products and special formats. The tamper shoes are mounted on rubber supports which ensure improved compacting results and higher block surface qualities.

The »Headguide™« FEATURE ensures absolutely correct and centered installation of the overall mold in the machine and thus protects particularly sensitive mini chamfers on large-format tamper shoes.

With the »Hotshoe™« FEATURE, which consists of heatable tamper shoes and an integrated temperature control device, verifiably higher surface qualities can be achieved on the concrete block.

The single piece »Singlebolt™« plunger is the logical continuation of the KOBRA modular system.

The »Multigroove™« FEATURE describes holding grooves in the insert walls, which hold the block while the mold lifts up from the production board.
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