DE10040170A1 - Surface milling of building bricks involves plane milling machine with milling discs driven by electric motors, perpendicular to brick surface, fitted with horizontally removing milling tools - Google Patents

Abstract

The method involves using several adjacent milling discs at the same height. A plane milling machine has at least two vertical milling discs (8) driven by electric motors (5), arranged relative to the surface of the bricks (10) and fitted with milling tools (9) that remove material in the horizontal direction. Independent claims are also included for the following: an arrangement for surface milling of building bricks.

Description

The invention relates to a method and a device for surface milling of bricks, especially of lightweight concrete bricks, with several milling discs arranged next to each other at the same height.

Such machines are in their arrangement with many on a horizontal axis arranged, side by side milling discs, on their circumference with WIDEA milling tools equipped, known. So designed as a milling drum Milling unit smashes when processing (milling / grinding) the masonry blocks with an excess height of 1-3 mm in a concrete block machine, the material to be milled. The by smashing the milled material in connection with The milling waste generated by the high residual moisture contaminates the processed Stone surface very strong, causing the pores on the surface to become strong enforce.

Furthermore, the disposal of the milling waste is due to the high residual moisture the material, especially as a special feature of lightweight concrete bricks (natural pumice) very problematic, since it turns out to be necessary with this method Extraction system with fan suction line and filter clogged slightly.

The problem of the stones made in this way now extends far into theirs Further processing in that the smeared surfaces no longer hold for the construction of a thin board mortar to the row of bricks built above result.

The invention is based on the object, a more cost-effective Manufacturing possibility with reference to precise height processing and essential improved surface quality, also for further processing create.

This is achieved according to the invention in that at least one face milling machine two electromotive arranged vertically to the surface of the bricks has driven milling discs, the circumference of which is in a horizontal circle material-removing milling tools.

Such a new milling system for the precise height machining of Lightweight concrete bricks made from natural pumice or similar tools, the Plant for mass production tailored to the method according to the invention of dimensionally accurate bricks (lightweight concrete blocks) with an excellent Price / performance ratio is designed and the properties of the used Raw materials - high residual moisture - are taken into account to a special degree.

The mode of operation of the inventive method and the inventive Device, including the features of claim 2, stands out in terms of economy through the use of significantly less Milling tools compared to the known method and the known Device off.

Due to the vertical arrangement of the new milling tools, also in theirs arranged cutting planes, an improved cutting performance is achieved, wherein in The milling material interacts with the speed of transport of the stone layers is cut cleanly and - this is essential when installing the bricks - only a small proportion of fine dust is generated. The precipitated The vertical arrangement of the milling discs with their  Milling tools partly in the direction of rotation of the milling disks to the outside hurled, passing it through light sheets into a collecting bunker, the is emptied by means of a conveyor belt and thus directly into the raw material cycle can be introduced.

Therefore, the surface of the bricks made in this way is in contrast only smeared to a very small extent to the known method and so the Binding to the stone to be put up during bricking is significantly increased.

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

According to a further feature of the invention, industrial milling tools Diamonds with a significantly higher cutting performance and service life are provided. This is due to the fact that it is more expensive than Widea tools Industrial diamonds possible by reducing the milling tools from 20 pieces per milling disk = 60 pieces in total compared to 400 pieces with 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 disk

Fig. 4 shows a milling tool in the front view

Fig. 5 shows a milling tool in a side 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 disks ( 8 ) with their 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. A method and device for the surface milling of masonry stones, in particular of lightweight concrete masonry stones, with a plurality of milling disks arranged next to one another at the same height, characterized in that a face milling machine ( 1 ) drives at least two electromotive ( 5 ) arranged vertically to the surface of the masonry stones ( 10 ) Has milling discs ( 8 ), the circumference of which is equipped with milling tools ( 9 ) which remove material in the horizontal circle. 2. The method and device according to claim 1, characterized in that three mutually offset milling disks ( 8 ) are provided in the horizontal effective plane, the milling planes overlap in regions. 3. The method and device 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.