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Thursday, 30 January 2014

Equipment for Breton marble and/or granite slab polishing lines

Good morning,
Today I’d like to talk about the equipment complementing the Breton marble and/or granite slab polishing lines.

Every marble and/or granite slab polishing line is outfitted with facilities for the slab loading/unloading, besides the polisher, of course:
JOT - Loader/Offloader for "diamond-match pattern" polished slabs.
RG - Motorized turn-table.

CAL/S/2000 - Automatic slab loader with 6 suction cup.
CAL/S/2000/1V - Automatic slab loader with 1 suction cup.
Tilting roller convejor.

Jib crane complete with hoist.
SCAL/S/2000 - Automatic slab unloader with 6 suction cup.

SCAL/S/2000/SV - Automatic slab unloader with 1 suction cup.
System for taking high-resolution photos of natural stone slabs, and for their filing, coding and labelling.


Various machinery, 
Drying units.
Unloading system with automatic selection trolleys.

APP - Automatic equipment to apply point of protective polymer on the slabs.

APL- Automatic applicator of the protective polyethylene sheet.

CG200/4 - Automatic waxing machine for marble/granite slabs.

CG200/4 - Automatic waxing machine for marble/granite slabs.

As you can see, Breton range is wide and offers different solutions in order to compose your marble and/or granite slab polishing line to your liking.

Ask for an estimate right now to
We will reply you shortly.
Sergio Prior

Tuesday, 28 January 2014

NEW Breton polishing marble slabs machine Levibreton KFG 4600

High production lines for polishing marble slabs
The Levibreton KFG 4600 polishing lines for marble are the soundest investment for companies requiring extreme productivity, top quality and operational simplicity, while maintaining budget-friendly operating and maintenance costs. Breton was the first company to develop machines for the continuous polishing of marble slabs, effecting a radical change in the sector.

Today, thanks to its unrivalled years of experience, emerging concepts in automation, and digital/PC integration, increased and experience based qualitysimple maintenance procedures and low operating costs continue to be our high standard of value we achieve for our customers. This standard is expertly applied to our latest version Levibreton KFG 4600

Levibreton KFG is a worldwide success with  customer satisfaction unparalled in the contemporary market. High Resale Value: thanks to their inherent quality, their ability to remain high-performance machines during all their service life and the readily available spare parts guaranteed by Breton, Levibreton KFG are much appealing to the second hand market and maintain a very high resale value even after several years  (a fact not to be ignored when the purchase of a new polishing machine is considered). This factor markedly improves the dynamic assett value of our client’s business.
Honing-polishing units
Made of anodized aluminium alloy, the spindles are specially designed for weight reduction and increased rigidity.. The raising-lowering system is perfectly balanced thanks to a pair of pistons with protected internal rods. The plates rise and lower in a flash, with a optimal contact with the slab surface, therefore slab edges are perfectly polished and the operating speed is maximized. Each head is equipped with a pressure regulator displaying the operating pressure on an  analogue display, for simple monitoring and setting according to the optimal parameters for the material at hand.
Special Breton plates
For high efficiency, each spindle is equipped with a specifically engineered, Breton abrasive holding plate with a diameter of 550 mm and holding 9 abrasives, which ensures an extremely high removal capacity and work stability for a perfect and uniform polishing even up to the edges of the material.
The special Breton plates are provided with an exclusive one-way shock-absorbing system ensuring the correct flexibility and a homogeneous and optimal working pressure.The results are an unequalled polishing quality as well as a lower consumption of abrasives.
The arc-welded steel beam has an ideal design with a box-type section in order to reduce weight and provide high stiffness. Interestingly, the beam is not drilled (and therefore weakened) to insert the honing units, which are fixed to the beam and contribute to increase its flexural strength. The spindle/beam assembly is thus extremely light and dynamic and enables fast acceleration/deceleration ramps.
Beam Drive 
The beam is actuated by two rack and pinion systems driven by two gearmotors, which are fixed at each end of the beam and are mechanically synchronized. The gearmotors are driven by two brushless-type motors controlled by special drives, which, besides enabling a sine movement of the beam, make it possible to keep the number of the beam strokes constant even when the slab width changes; this ensures a better polish quality and uniformity on the whole surface of the slab, edges included. 
This  system is extremely reliable and results proven, guaranteeing highly dynamic movements without stressing the mechanical components resulting in maximum uptime and maximum lifecycle. The beam working speed reaches 70 m/min. Furthermore, energy saving ensues from “energy recovery” drives that transfer to the electrical grid the energy generated by the braking when the beam motion slows down.
Levibreton KFG 4600 was designed on the basis of the extensive experience acquired on more than 1.300 “Levibreton” polishing machines sold throughout the world, using the latest design techniques.
Quality Function Deployment - QFD
The new
Levibreton KFG 4600 originated from the Customers’ needs, from what the Customer really expects from the ideal machine.
Finite Element Method - FEM
All the critical components of the machine have been checked out using the Finite Element Method (FEM).
Failure Mode and Effect Analysis - FMEA 
Particular care was given to the early detection of all the potential defects/critical points which may occur during the service life of the machine, identifying and implementing the appropriate corrective actions.
Support structure
The support structure is a distortion-proof, arc-welded steel monobloc provided with 12 sturdy supporting legs. The conveyor belt slides upon a thick steel top, which is milled all in one go to ensure perfect flatness, and is driven by a brushless-type motor that guarantees a better control of the feed speed.

Beam sliding bridges
The beam ends are fixed to two shoulders sliding along sturdy, cast-iron bridges, which house hardened, ground and thick slideways with large diameter roller runners in an oil bath, and a micro pinion. The sliding components are protected by stainless steel labyrinth guards,

Slab profile and  thickness detection
A photoelectric barrier reader detects the slab profile with 10x10 mm resolution while a sonar reader senses its thickness. This system allows to process even slabs with a polished surface (such as already polished or resin-treated slabs). The system controlling the automatic head lifting-lowering, ensures the self-adjustment of the beam travel to the slab width and guarantees that the front, anti-splash and sound-deadening barriers are positioned automatically to match the slab thickness.
Water plant
Water is supplied to the heads by a common, large-diameter PVC piping that is stiffly fixed behind the spindles and connected to the spindle units by means of flexible, rubber pipes.An revolutionary system diverts water outside the spindle casing in the event of overflowing or clogging of the ducts, thus preventing excess water from coming into contact with the spindle internal components.
Automatic controlof abrasives wear
This system performs continuous monitoring of the abrasive wear of each single head through video advice notes and warning signals before tools are completely worn out. It also guarantees the minimal lifting of the heads at the forepart and rear end of the slab and their subsequent rapid descent, thus ensuring a better polishing of the edges and a higher operating speed.
Electric and electronic plant
The electric and electronic plant is wired with the “field-bus” technique that transmits digitally, through a single cable, all the PC signals to the different control units installed on the machine. Signal transmission is safe and identification of possible failures is greatly simplified. The stationary part of the machine is electrically connected to the mobile beam by a parallel sheathing system ensuring safer working conditions and a longer cable life. All the electric and electronic equipment, including the PC, is supplied by world top-brands, therefore the user can freely get technical assistance and spare parts directly from the manufacturer, virtually throughout the world.
Automatic centralized lubrication system
A centralized system, mainly consisting of a grease reservoir, a pump with double micrometer filtration system, sequential distributors and pipes for high-pressure, guarantees the automatic lubrication of either the spindle units or the other moving parts of the machine. The system is warned about possible malfunctions by pressure sensors that easily pinpoint where the circuit is clogged. 

Slab cleaning
A rubber wiper fixed at the back of the machine removes water from the slab surface.A pneumatically controlled spindle, integral with the beam and holding a brush, cleans the slabs once they are polished. The spindle is raised and lowered automatically each time a slab passes through.
Accident-prevention, sound-deadeningguards
A pressure regulator is installed on each single spindle in a high, ergonomic and safe position. Pressure is displayed on an analogue pressure gauge (upon request, manual selectors for lifting/lowering each single head can be supplied). The frontal, sliding panels for accident-prevention and sound-deadening have a sandwich-like structure and are made of ABS and polyurethane.
Sound-deadening splash guards with a stainless steel sandwich-type structure are installed on the beam, in front of the heads, on the same level of the heads. Their positioning is motorized, vertical and automatic in order to match the slab thickness and they lift each time the abrasives need to be replaced.

Management and programming
The colour touch-screen and advanced, user-friendly software enable the main processing functions to be managed, including: 
• option to store (and recall) different work programs for various types of material
• conveyor speed and synchronism of the whole line, including loaders and connection roller conveyors
• beam movement (speed, customize programming of the acceleration and deceleration ramps)
• back-slipping correction on the anti-skid conveyor of badly-sawn or bent slabs, for both single slabs and packs of slabs
• continuous, automatic monitoring of the abrasive wear for each single head, with video advice notes and warning signals before the tool is completely worn out
• option of excluding all, some, or just one slab, or even a portion of a slab (head, end, corner).

Remote diagnosis
Levibreton KFG 4600 comes standard with an advanced software for remote assistance (subject to an Internet connection with Breton) enabling the remote trouble-shooting of any possible technical failure: a time- and cost-saving solution since technical service on the spot is no more required.

The PC allows to gather and organize statistical data relating to production and consumption, such as:
• production statistics (square metres produced on partial periods, per job order, per shift, progressive or total quantities)
• tool wear statistics (square metres produced with the operating tool, square metres produced with the last replaced tool, etc.)
• diagnostics of machine conditions (time of: machine turned on, machine operating, machine with alarms turned on, etc.)
• statistics of alarms occurred
• maintenance scheduling with video alarm when preventive maintenance intervals are expired

Overall dimensions

Technical specification
What are you waiting to ask for a quote?
Write to .
It's all for today.
Sergio Prior

Wednesday, 8 January 2014


Energy Saving with Levibreton - polishing machine for marble and granite slabs. 

One of the key advantages to the Levibreton are them significant energy preservation. Energy is conserved by two functional abilities of the machine:

1. Through special drives, the “Energy Recovery” function transfers electrical energy generated during the braking once the beam slows down to the electrical grid.

2. The “Stop & Go” function stops all of the motors and utilities automatically once the machine no longer contains unpolished slabs and the belt conveyor has stopped moving. 

This makes it possible to attain minimal energy consumption when the machine is not working. 
Once a new unpolished slab has been fed into the machine and the conveyor belt has started up again, the motor and utility software will automatically restart.

1. Machine consumption of electrical energy during the standard work cycle.

2. The “Stop & Go” function switches off automatically motors and utilities: the electrical energy consumption decreases instantly.
3. The “Stop & Go” function restarts automatically motors and utilities: the electrical energy consumption goes gradually up.

The machine is provided with the “Energy Management” functional capability that transfers the energy generated during the braking stage to the electrical grid.
The special drives used allow achieving the internal energy balance according to which the energy generated by a motor during braking can be used by another motor under acceleration.
It 's all for today.
See you soon.

Sergio Prior