[0001] The invention relates to a device for manufacturing bricks from clay, comprising
a pressure nozzle connecting onto a supply holder for forming a continuous strand
of clay, a cutting member for regularly severing a piece of clay from the moving strand,
means arranged close to the pressure nozzle for covering the strand with sand and
means for transporting away a piece of clay severed from the strand.
[0002] Such a device is known from the Netherlands patent 161.832.
[0003] A difficulty in applying the known device is that, subject to the composition of
the clay, a tendency may occur toward premature, spontaneous breakage of the strand.
That is, before the cutting member severs a piece of strand to the desired length,
it has already broken off.
[0004] The invention has for its object to provide a solution to this problem.
[0005] This is achieved according to the invention in that a funnel-like part connects onto
the pressure nozzle.
[0006] It has been found in practice that with the steps according to the invention the
danger of premature breakage of the strand is obviated and that any suitable composition
of the clay can be applied in operationally reliable manner in the present invention.
[0007] The funnel-like part preferably has a diameter tapering from 150 to 140 mm.
[0008] The invention is elucidated with reference to the drawings of an embodiment.
[0009] In the drawings:
Fig. 1 shows schematically a device according to the invention,
Fig. 2 shows in perspective view a part of the device of fig. 1, and
Fig. 3 shows in sectional side view the funnel-like part according to the invention.
[0010] A strand 2 is formed from a supply holder 1 for clay using a pressure nozzle. Using
the sand-covering device the side periphery of the strand is covered with sand from
a supply container 3 for sand. The strand runs between a pair of rollers 4. In the
cutting device 5 a piece is severed from the strand to the desired length. The severed
piece 6 is subjected by a pair of conveyor belts 7 to an accelerating movement such
that the block 6 falls with high kinetic energy into a mould container 8 and fills
it.
[0011] According to fig. 2, sand-covering is carried out by spoon-like members 9, 10 which
carry sand out of the supply container 3 onto the side wall of the strand.
[0012] According to the invention a funnel-like part 11 is arranged connecting on the pressure
nozzle opening, the diameter of which part 11 has a comparatively small taper in the
vertical direction. The taper is preferably from 150 mm to 140 mm. Practical experience
has shown that the danger of premature breakage of the strand is obviated with the
present step.
1. Device for manufacturing bricks from clay, comprising a pressure nozzle connecting
onto a supply holder for forming a continuous strand of clay, a cutting member for
regularly severing a piece of clay from the moving strand, means arranged close to
the pressure nozzle for covering the strand with sand and means for transporting away
a piece of clay severed from the strand, characterized in that a funnel-like part connects onto the pressure nozzle.
2. Device as claimed in claim 1, characterized in that the funnel-like part has a diameter tapering from 150 to 140 mm.
