DE10040170C2 - Device for the surface milling of bricks - Google Patents

Description

The invention relates to a device for the Surface milling of masonry stones, especially lightweight concrete Bricks, with several arranged side by side at the same height Milling disks.

Such machines are in their arrangement with many on one horizontal axis, side by side Milling discs, equipped with WIDEA milling tools on their circumference, known. The milling unit designed in this way as a milling drum breaks up when processing (milling / grinding) the bricks with a Excess height of 1-3 mm can be manufactured in a concrete block machine, the material to be milled. The by breaking the milled material in Combined with the high residual waste of milling waste very dirty the machined stone surface, causing the Strongly clog pores on the surface.

Furthermore, the disposal of the milling waste is due to the high Residual moisture of the material, especially as a special feature in lightweight concrete Bricks (natural pumice) very problematic, because the Extraction system with fan Suction line and filter clogged easily.

The problem of the stones made in this way is now enough far into their further processing by the smeared Surfaces no longer hold onto building a thin board mortar the row of bricks built above.

According to the document DE 299 16 107 U1, which in one the inventive device far distant subject area is a milling head for face milling solid surfaces, such as one made of asphalt, concrete or the like Road surface with a rotating drivable tool carrier the end face of milling tools are known.

Also in a brochure from Fickert KG are granite grinding heads published for grinding and polishing granite.

The invention is based on the object, a more cost-effective Manufacturing possibility with regard to dimensionally accurate height machining and much improved surface quality, also for the Further processing, to create.  

This is achieved according to the invention in that a face milling machine at least two arranged vertically to the surface of the bricks, has electromotively driven milling discs, the circumference of which in the horizontal circle of material-removing milling tools. Such is a new milling system for the dimensionally accurate Height processing of lightweight concrete bricks made of natural pumice or similar Tools created, the on the earth inventive Process coordinated plant for the mass production of dimensionally accurate bricks (lightweight concrete blocks) for one excellent price / performance ratio and the Properties of the raw materials used - high residual moisture - in special account is taken.

The mode of operation of the inventive Device, including the features of claim 2, stands out in terms of economy through the use of significantly fewer milling tools than the known one Method and the known device.

The vertical arrangement of the new milling tools, also in theirs staggered cutting planes, is an improved Cutting performance achieved, in cooperation with the Transport speed of the stone layers cut the milled material cleanly will and - this is essential when installing the Bricks - only a small proportion of fine dust is generated. The The milled material is precipitated due to the vertical arrangement of the milling discs with their milling tools, partly in the direction of rotation of the milling disks hurled outwards, taking it over light sheets into one Collection bunker is directed, which is emptied by means of a conveyor belt and can therefore be introduced directly into the raw material cycle. Therefore, the surface of the bricks made in this way in In contrast to the known method only to a very small extent smeared and so the bond to those to be put up during bricking Stone significantly increased.

A look at the energy consumption shows that the system after the Invention is also clearly superior to the known system here, since only three milling discs with an energy requirement of 3 × 7.5 kW / h = 22.5 kW / h are used while the energy demand according to the known System is in the order of 44 kW / h.

According to a further feature of the invention are as milling tools Industrial diamonds with a significantly higher cutting performance and Life expectancy. This is on the background of it compared to Widea tools more expensive industrial diamonds possible and by reducing the milling tools by 20 pieces each Milling disc = 60 pieces in total compared to 400 pieces in the known milling drums.

Fig. 1 shows the known milling system with a milling drum,

Fig. 2 shows the inventive milling system with three vertically extending milling units,

Fig. 3 shows a milling disc,

Fig. 4 shows a milling tool in the front view.

Fig. 1 shows a plan milling machine (15) with 2 pieces horizontally arranged axis (14) for the milling drums (12), the milling drums (12) are made of many juxtaposed milling cutters (13).

Fig. 2 shows a face milling machine ( 1 ) with a frame ( 2 ) and a lifting and lowering cross member ( 3 ), on the three milling units ( 4 ), consisting of an electric motor ( 5 ), a gear ( 6 ), one Bearing unit ( 7 ) and a milling disc ( 8 ) with a tool holder are arranged. The milling disks ( 8 ) with their tool holders accommodate milling tools ( 9 ), preferably designed as industrial diamonds.

Three milling disks ( 8 ) are provided in the horizontal offset, which, in the circular removal of milling material, act on the bricks ( 10 ) arranged on a transport device ( 11 ).

As a result of the horizontal rotation of the milling disk ( 8 ) with its tools ( 9 ), a large part of the fine-grained material is thrown outwards so that it cannot smear with the surface of the bricks ( 10 ).

LIST OF REFERENCE NUMBERS

1

facing router

2

frame

3

Crossbar can be raised and lowered

4

milling unit

5

electric motor

6

transmission

7

Bearing unit for the milling disc

8th

Milling disc with tool holder

9

milling tools

10

bricks

11

transport means

12

beaters

2

Pcs.

13

milling cutters

14

Horizontal axis

15

facing router

16

Vertical axis

Claims (4)

1. Device for the surface milling of masonry stones, in particular of lightweight concrete masonry stones, with several milling disks arranged at the same height next to one another, characterized in that a face milling machine ( 1 ) has at least two milling disks ( 5 ) arranged vertically to the surface of the masonry stones ( 10 ) and driven by an electric motor ( 5 ). 8 ), the circumference of which is equipped with milling tools ( 9 ) which remove material in the horizontal circle. 2. Device according to claim 1, characterized in that three mutually offset milling discs ( 8 ) are provided in the horizontal effective plane, the milling planes overlap in regions. 3. Apparatus according to claim 1 or 2, characterized in that industrial diamonds are provided as milling tools ( 9 ). 4. Device according to claims 1-3, characterized in that the milling discs ( 8 ) via electric motors ( 5 ) and gears ( 6 ) are driven.