Travertine Slab Polishing Line Machine

Number of Polishing Heads : 6/8/10/12/14/16 Pcs
Polishing Head Plate Diameter : 520 mm
Polishing Head Motor Power : 11 kW
Working Width : 2200 mm
Working Thickness : 8-80 mm
Machine Width : 2900 mm
Machine Height : 2400 mm

FEATURES
BASE
Monolithic high-thickness steel base electro-welded with rectified sliding surface.
INTERCHANGEABLE WEAR-PROOF SURFACES
Made with special steel (UBNW.1.446), thickness 3 mm, to guarantee planarity over time and facilitate maintenance.
SURFACE TREATMENT
All parts are treated inside our Company, with hand sand-blasting, cold galvanising and coating with bi-component epoxy base. On request, base and shoulders can be treated with Cataphoresis or hot dip galvanising. All screws are stainless steel.
3-BELT CONVEYOR
Driven by two large-diameter drums and inverter adjustable speed. Unique system to clean and lubricate the belt to ensure uniform sliding. The drive drum is coated with vulcanised rubber to prevent slipping and ensure flow smoothly.
SPINDLE HOLDER BEAM
Sliding on the shoulders fitted with roller cage in oil bath, protected by sealed stainless steel telescopic guards. Hardened steel sliding elements interchangeable and installed on the shoulders and bridge. The spindles are housed in the centre of the beam to ensure complete stability and eliminate any possibility of vibration.
BRIDGE TRANSLATION
With pinion and rack. Central gearmotor and antirotation bar with large diameter. Shifting speed controlled from inverter).
CALIBRATION UNITS
- Calibrator spindle made with heavy steel metalwork with rectified chromeplated sleeve, that slides through cast iron bushing to absorb vibrations during processing. On the spindle plate where it serves as a flywheel and is dynamically balanced, there are calibrator rings with diamond sectors installed on them (Ø 670-870-1050 mm). Electric drive can be 22 or 30 kW.
- An automatic system combined with motor absorption acts on conveyor speed, slowing it in case of excessive overload, making the spindle stop and automatically lift. The spindle is automatically repositioned with absolute precision when the operating cycle starts back up again. The calibrator is managed from the touch screen for all of its automatic and manual functions. Automatic positioning at the pre-selected height with centesimal precision.
POLISHING UNITS
- Cast iron polishing spindles, installed in the centre of the beam, with thick and rectified chrome-plated steel shaft, sliding on bronze bushing, complete with pneumatic cylinder for lifting abrasive carrier plate.
Each spindle is fitted with a pressure gauge to control pressure and counter-pressure to balance the head during the work.
- Motors. 7.5 or 11 kW motors with single or sequential start-up. Drive transmission through high-output pulleys and belts.
- Ø 470/510 aluminium alloy polishing plates complete with Frankfurt fittings for seven abrasives. They are equipped with a multidirectional shock absorbing system to ensure maximum operating homogeneity and efficiency of the abrasive.
- Automatic centralised lubrication system of the spindles with the possibility of setting quantities and intervention.
- Abrasive finished. The machine is equipped with a system to set the thickness of the piece being processed based on which, a sensor installed on each head, calls the attention of the operator to replace the abrasive, when finished.
- Slab-guide supports with screw movement through flywheel from a unique station, complete with stainless steel slab-guide.
- Material presence detection unit to control the automatic up/down movement of heads in case of discontinuity between pieces.
SAFETY AND PROTECTIONS
- Front PLT doors with interlocking limit switch to avoid opening before the spindles stop. Side and rear stainless steel guards, easy to inspect.
ELECTRONICS: THE "THINKING HEART" OF LMS
- Reliable. After careful testing, the parts are chosen from the leading companies in the specific sectors. To minimize the probability of failure or interference, a modern “can open” network system is installed on board, which drastically reduces the number of cables between sections.
- Software developed entirely by GMM, guaranteed over time, improvable and most of all customizable according to customer requirements.
- 12" Touch Screen. Interactive graphics for complete machine cycle management with start-up in sequence of spindles, conveyor motor and bridge motor. To manage spindle down/up based on piece presence.
To view the abrasive consumption status for each head.
- Data base. Broad possibility to store large amounts of information about work done or in process.

FEATURES
BASE
Monolithic high-thickness steel base electro-welded with rectified sliding surface.
INTERCHANGEABLE WEAR-PROOF SURFACES
Made with special steel (UBNW.1.446), thickness 3 mm, to guarantee planarity over time and facilitate maintenance.
SURFACE TREATMENT
All parts are treated inside our Company, with hand sand-blasting, cold galvanising and coating with bi-component epoxy base. On request, base and shoulders can be treated with Cataphoresis or hot dip galvanising. All screws are stainless steel.
3-BELT CONVEYOR
Driven by two large-diameter drums and inverter adjustable speed. Unique system to clean and lubricate the belt to ensure uniform sliding. The drive drum is coated with vulcanised rubber to prevent slipping and ensure flow smoothly.
SPINDLE HOLDER BEAM
Sliding on the shoulders fitted with roller cage in oil bath, protected by sealed stainless steel telescopic guards. Hardened steel sliding elements interchangeable and installed on the shoulders and bridge. The spindles are housed in the centre of the beam to ensure complete stability and eliminate any possibility of vibration.
BRIDGE TRANSLATION
With pinion and rack. Central gearmotor and antirotation bar with large diameter. Shifting speed controlled from inverter).
CALIBRATION UNITS
- Calibrator spindle made with heavy steel metalwork with rectified chromeplated sleeve, that slides through cast iron bushing to absorb vibrations during processing. On the spindle plate where it serves as a flywheel and is dynamically balanced, there are calibrator rings with diamond sectors installed on them (Ø 670-870-1050 mm). Electric drive can be 22 or 30 kW.
- An automatic system combined with motor absorption acts on conveyor speed, slowing it in case of excessive overload, making the spindle stop and automatically lift. The spindle is automatically repositioned with absolute precision when the operating cycle starts back up again. The calibrator is managed from the touch screen for all of its automatic and manual functions. Automatic positioning at the pre-selected height with centesimal precision.
POLISHING UNITS
- Cast iron polishing spindles, installed in the centre of the beam, with thick and rectified chrome-plated steel shaft, sliding on bronze bushing, complete with pneumatic cylinder for lifting abrasive carrier plate.
Each spindle is fitted with a pressure gauge to control pressure and counter-pressure to balance the head during the work.
- Motors. 7.5 or 11 kW motors with single or sequential start-up. Drive transmission through high-output pulleys and belts.
- Ø 470/510 aluminium alloy polishing plates complete with Frankfurt fittings for seven abrasives. They are equipped with a multidirectional shock absorbing system to ensure maximum operating homogeneity and efficiency of the abrasive.
- Automatic centralised lubrication system of the spindles with the possibility of setting quantities and intervention.
- Abrasive finished. The machine is equipped with a system to set the thickness of the piece being processed based on which, a sensor installed on each head, calls the attention of the operator to replace the abrasive, when finished.
- Slab-guide supports with screw movement through flywheel from a unique station, complete with stainless steel slab-guide.
- Material presence detection unit to control the automatic up/down movement of heads in case of discontinuity between pieces.
SAFETY AND PROTECTIONS
- Front PLT doors with interlocking limit switch to avoid opening before the spindles stop. Side and rear stainless steel guards, easy to inspect.
ELECTRONICS: THE "THINKING HEART" OF LMS
- Reliable. After careful testing, the parts are chosen from the leading companies in the specific sectors. To minimize the probability of failure or interference, a modern “can open” network system is installed on board, which drastically reduces the number of cables between sections.
- Software developed entirely by GMM, guaranteed over time, improvable and most of all customizable according to customer requirements.
- 12" Touch Screen. Interactive graphics for complete machine cycle management with start-up in sequence of spindles, conveyor motor and bridge motor. To manage spindle down/up based on piece presence.
To view the abrasive consumption status for each head.
- Data base. Broad possibility to store large amounts of information about work done or in process.

AUTOMATIC BELT POLISHING MACHINE FOR MARBLE SLABS
Thanks to CEMAR’s over twenty years experience in surface treatment of marble and granite, GMM present the most advanced version of LMS 2100 belt polishing machine for marble slabs. Respecting the philosophy that has always characterized the excellent CEMAR product, the new series of polishing machines for marble slabs is made using robust, accurate and reliable mechanics. In conjunction, the machine has advanced electronic and technology solutions to ensure maximum quality of work, high production yields and reduction of waste. All this ensure low running and maintenance costs, with high durability.
FEATURES
BASE
In sturdy electro-welded steel structure with rectified sliding plane covered with replaceable wear plates made of 3 mm thick special steel to ensure flatness and easy maintenance over time.
SURFACE TREATMENTS
All components are treated in our company with sandblasting by hand, cold galvanizing and painting with two component epoxy primer. On request, base and shoulders can be hot dip galvanized.
BELT
Pulled by two drums of large diameter. Speed adjustable by inverter. Two unique systems for cleaning and lubricating the belt to ensure flow smoothly.
BEAM
For spindle housing in a sturdy and rigid structure of welded steel. Sliding on the shoulders equipped with roller bearing in oil bath, protected by telescopic guards in stainless steel. Sliding elements made of hardened steel interchangeable and mounted both on the shoulders and on the bridge. The spindles are housed at the center of the beam to ensure complete stability and to avoid any possible vibration.
TRANSLATION OF THE BRIDGE
With rack and pinion. Starting from the version with 12 spindles, the transmission takes place with 2 gearmotors coupled at the bridge ends. Travel speed controlled by inverter.
POLISHERS SPINDLES
In cast iron, with thick chrome-plated steel grounded shaft, sliding on bronze bushes, complete with pneumatic cylinder for raising the abrasives carrying plates. Each spindle is equipped with a gauge for the control of pressure and counterpressure, necessary to balance the head during the working. The cooling water passes inside the shaft for a better and uniform distribution on the materials being processed.
MOTORS
11 kW/15 HP motors, with individual or in sequence start-up. Motion transmission with high performance belts.
ELECTRONICS: “THINKING HEART” OF THE LMS 2100
- Reliable. After careful controls, components are selected among leading companies in specific sectors (mainly Siemens or Schneider-Telemcanique).
- To make minimum the probability of failure or interference, on board of the machine is adopted modern network system "can open" which drastically reduces the number of cables between one section and the other.
- Software. Developed entirely in GMM, guaranteed over time, especially improved and customized according to customer requirements.
- Inverters. The roller conveyors and specific rollers in the entry are handled by inverters, like all the other moving parts, to balance the fl ow of material and optimize the speed of each step.
- Optical detector 120 photocells, to scan in a sequence the shape of entering slabs, done in RS485 protocol (noise free), it transmits the shape of the slab to the control unit to better manage the ascent and descent of the heads, according to the various selectable working cycles.
- Ultrasonic sensor, positioned at the entrance, to detect the material thickness. Enables fully automatic management of the abrasives consumption of each single head.
- Automatic lubrication management, for planning the quantity of lubricant to be dispensed and the dispensing times.
- Touch Screen 12". Monitor with "easy to use" interface, interactive graphics for the complete management of the machine cycle with sequential startup spindle motors, belt and bridge motors. It drives the spindles up-down stroke according to the shape of slabs. Display of abrasive consumption status for each head.
- Data base. Large possibility to store various information about the work done or in progress.

The oscillation of the bridge of a traditional polishing machine that moves several spindles at the same time represents a limit especially for irregular slabs. For this reason, SIMEC presents to the polishing market the ORBITAL series featuring an oscillating and independent movement of each spindle. As a matter of fact, in the ORBITAL polishing machines there is no longer a single oscillating bridge but several bridges on which the spindles move individually making movements on different axes, similar to the ones performed by a manual processing and above all perfectly reaching the edge of the most irregular slabs without having to lift the other heads and in this way tools totally spend more time on the material.

The HPM 2200 RS machines are high performance polishing machines for marble slab, deriving from the granite version NP RS, from which they inherit most of the technological solutions.
Many customers has recently installed a new polishing line for marble and limestone slabs. In addition to the high performance new polishing machine HPM RS for marble and limestone slabs, the line is equipped with automatic loader mod. FINGER and with the automatic unloader robot mod. RAPID.

Polishing machine for marble slabs, available with heads from 4 to 16, equipped with a 9.2kW motor for each spindle and with working pressure control fitted on each polishing head. The control panel has a wide display to ensure complete control of the machine. LM 2100 RS is available also in the combined version for polishing slabs and calibrating and polishing strips and/or tiles. The calibrating is carried out by rotating plates having a diameter of up to 1100 mm, which can be equipped with diamond tools and installed in a fixed position at the entry of the polishing machine.

The perfect polishing of marble slabs on industrial scale requires a modern line equipped with state-of-the-art technologies.
Pedrini is able to provide the most complete solutions ensuring high production performances, high degree of the polishing quality with low costs of operation and maintenance.
Pedrini polishing lines for marble slabs are designed, manufactured and installed to meet every requirement of each customer
Each polishing line is set according to the available spaces and is customized thanks to the use of a wide range of options, machines and auxiliary equipment designed to meet any kind of production need and automation level.
The polishing machine Galaxy B220MA is the basic machine in the polishing lines proposed by Pedrini.
All components have undergone structural inspection trough the FEM (Finite Element Method). The structural components surfaces are protected with three coats applied after sandblasting, while the small parts have undergone a cataphoresis corrosionproofing treatment.
The strong base, built in normalized steel work with large thickness longitudianl and transversal elements, has been further stiffened through continuous sloped structures that protect conveyor belt lower route by conveying water and eventual waste directly to ground.
All surfaces matching the upper structures have been machined through one sole positioning on the tool machine to achieve perfect units coupling.
The multi-clothe anti-slip conveyor belt is controlled by two large diameter rolls: a traction roll powered through an epicyclical gear motor, an idle roll equipped with tension devices.
Mobile beam, in heavy steel work, is designed as a sole body with a very rigid closed section. The beam slides in oil bath on hardened and ground large diameter rolls into housings, that are protected through fixed labyrinth guards, inside the bridges. Beam transversal movement is controlled by two gear motors, synchronized through a connecting shaft, which drive two helical tooth pinions tempered and ground with two racks fixed on the bridges.
Two special devices constantly lubricate with oil the contact between pinion and racks.
Two adjustable rolls units control mobile beam longitudinal position and contrast spindle vertical push working on hardened guides fixed onto bridges outer sides.This technology allows for very smooth beam transversal movement because it clears racks and pinions from vertical stress and renders pulling, instead of pressing, conveyor belt longitudinal action.

The NPM polishing machines are available also in the combined version for calibrating and polishing of marble slabs. The first mobile bridge (PM version) installs calibrating spindles, capable of calibrating the useful working width, the second bridge installs honing spindles, the number depending on the version, for total honing/polishing of the width working efficiency of 2150 mm.

The LM 2100 RS is available in the combined version for polishing slabs and for calibrating and polishing strips and/or tiles. The calibrating is performed by special spindles that can be equipped with diamond tools with useful working width of 650 or 1000 mm according to the version. The calibrating spindles are installed at a fixed position at the entry of the polishing machine while the dressing spindles are installed on a mobile bridge and can operate on a useful width of 2100 mm.

The HPM polishing machines are available in the version for strips, with useful working width of 650 or 1000 mm and are supplied in combined solutions for calibrating and dressing-polishing. The spindle of the HPM polishing machines can house plates 580 mm. in diameter. The calibration takes place with rotating plates equipped with diamond tools., installed in a fixed or mobile position.