Method of and device for producing concrete blocks

A method of producing concrete paving stones using a paving stone machine, the method comprises the steps of:

• producing a second concrete paving stone layer as a core concrete paving stone layer, wherein a core concrete material is introduced into the formwork by a first filling device;
• wherein after introducing the core concrete, producing a first concrete paving stone layer as the facing concrete layer, whereby a face concrete is subsequently filled into a formwork and wherein a concrete material introduced into the formwork is then compacted and hardened;
• wherein before introducing the core concrete, in an initial step of the method to produce the third concrete paving stone layer, a concrete material for the third concrete paving stone layer is introduced into the formwork by a first dosing device, wherein the concrete material for the third concrete paving stone layer is introduced into the formwork by a dosing device comprising a cellular wheel sluice, and wherein each concrete paving stone comprises a multiple-layer concrete paving stone body with at least one even concrete paving stone underside and, opposite the latter, an essentially flat concrete paving stone upper side, wherein the concrete paving stone body comprises the first concrete paving stone layer as a facing concrete layer and forming the concrete paving stone upper side, at least one second concrete paving stone layer designed as a core concrete layer, as well as at least one third concrete paving stone layer forms the concrete paving stone underside, wherein in the method at least one formwork is provided;
• and
• wherein the concrete material for the third concrete paving stone layer is introduced into the formwork in a volumetrically-dosed manner using a rotating cellular wheel of the cellular wheel sluice that is driven in a controlled manner and a rotation speed of the cellular wheel is set in a controlled manner.