Angelo Brothers Company (India) Limited

These aging machines ages the capsule after the
exhaust process by introducing different voltages. Firstly the
tungsten is pre heated and then lit by high voltage (the electrodes
can be switched by usual lighting processing). The voltage is
adjusted to be in a specified range. Pressing a selective switch on
the control box does the adjustment.

This aging machines comprises of the following
mechanism:

• 60 sets of chuck.


• Electric circuit controlling system

The assembly
machines consists of :

• Capping Machine


• Cement Dispenser


• Assembly Conveyor


• Ageing Conveyor


• Stamping Machine


• Marking Machine

This 30-feet long baking machines characterized by its circular and horizontal design of airflow, is designed to eliminate all the compounds except the fluorescence in the glass tube by hot flowing air.

Electrically heated auto-controlled system is applied in this machine at the first stage while the tube being heated, there are also two head position blowing in oxygen, making it easy to eliminate all the impurities. At the last stage the tube is cooled off .

• 220 head hot air generating mechanism
  
• Electric Oven
  
• Baking mechanism
  
• Air blowing system
• Oxygen blowing system
  

The bending machines consists of a
melting conveyor pre-fitted with a tube hopper and indexing drive mechanism mounted on
a stationary platform to obtain indexing motion of the turret. The drive rotates
the circular turret where bending heads are fitted and these heads subject the tube to
various operations.

This coating machines are 24-feet long coating
the formed U-shape glass tube before baking it. The coating unit
comprises of 210 heads. Each head holds four-glass tube and is driven
by a very accurate index cam. The tube is conveyed to its position
for coating.The tube is loaded on the head before coating the tube it
is then held in the stationary position and the fluorescent paste is
filled in the tube by the jet.

This coating machines comprises the following
mechanisms:

• 220 head hot air generating
  mechanism
  


• Florescent paste coating mechanism
  


• Heated air blowing system

A water-based mixture is used to
protect the environment.

The cutting machines works on the principle of rotary disc mounted arrangement revolving around its axis with the help of sprockets fixed at drive ends and free wheeling ends. These multiple discs support the main glass tubing and because of the rotary motion of the disc it causes the tube to rotate. Each disc is provided with the slot cut at the periphery of the disc so that in one rotation the slots rotate and allow the tube to index.

The cutting machine is set in such a way such that the slots are aligned in a fashion that it acts as a transfer mechanism for the tube.

Initially all discs are aligned (all slots in one line) in such a fashion that it holds the glass tube which is approximately one meter in length. Then this tube is heated by cutting burners and cold water is struck on the heated portion so that crack is developed and the cutting takes place. The cut tubes are then carried forward so that the ends of the cut tubes are glazed and the tube is ready for further processing.

The exhaust machines works on the
principle of exhausting the lamp of impurities using a head
consisting of vacuum proof mechanism fitted on a flat indexing
turret connected to the battery of vacuum pumps through a center valve
plate ( which allows the vacuum sealed in position using oil
rings).The indexing allows the lamp to be heated , cleaned of
impurities and finally filled with inert gas and the discharge
medium

The lamp is loaded in the initial
position and then at different positions the lamp is heated through the
heat chamber , the emission gases being sucked out and then dosed
with mercury and finally filled with the Argon or required mixture of
Ar-Ne gas at the set pressure .

The fused / sealed lamp is initially
loaded in the machine head and head lever is closed to allow vacuum
in this system. To achieve a higher degree of vacuum the lamp is
subjected to elevated temperature and the lamp is subjected to
vacuuming process . At half way of the vacuum process the two ends of
the cathode is subjected to electric supply making the cathode
filaments red hot thus allowing decomposition of the triple
carbonate layer on the filament. Once the decomposition is finished
the lamp is flushed with inert gas and mercury is dozed inside the
lamp automatically. The lamp is finally filled with inert gas at a
stable pressure and the holding exhaust tube is melted allowing a
seal in the capsule

This tube is discharged for further
process to fusion / exhaust.

The fusion machines works on the principle of fixed head indexing mechanism driven through Indexing CAM and a driving gear box to convert the rotary motion of the motor into peripheral movement of the slide operating heads. It converts sealed tubes to be fused together into dual tube units.

The sealed tubes are loaded on the machine, aligned and centered, preheated to get into a final position wherein a bipartisan burner heats the loaded tube and allows the glass to be softened at the fusion point. As the sealed tube becomes soft at the fusion point air is blown through the tube causing a blow hole. This slide mechanism of the individual tube holding jaws brings in the tube together so that the fusion joint is formed.

One end of the fused tube is cleared of its blowing end i.e. the exhaust tube and the fused joint is annealed before dislodging itself from the head to carry out further operation.

The mount machines works on the principle of rotary head indexing mechanism to convert lead wires, filament and bead glass into a single unit called mount. The mount serves as a igniting component to initiate the discharge of the low pressure arc discharge lamp used in the compact fluorescent lamp manufacturing.

The filament of the mount is loaded on with the carbonate paste, while the lamp is processed this carbonate paste decomposes into CaO+, BaO+ and SrO+ and carbon dioxide. The active metal components act as a source of electron emission which is required in the discharge process.

The chosen lead wires are such that the coefficient of expansion of these wires and the glass used match so that the seal between the glass and the metal is perfect and during the heating process cracks are not formed. It is important for these components to match their coefficient of linear expansion since lamp is finally a sealed tube at required pressure.

To ensure a high quality Angelo
Brothers has developed a complete process for quality lamp
production. For this we offer qualitry control machines. This production can only be achieved if checks and
quality control parameters are maintained with these quality control
machines. These qualoty control machines are very small ancillary equipments known as :

• Pressure Gauge Tester


• Torsion Tester


• Humidity Test Chamber


• Glow Wire Test Equipment


• Spectroradio Meter


• Ballast Analyzer


• High Voltage Tester

The sealing machines works on the principle of fixed head indexing mechanism mounted on a flat turret where different components of lamp are sealed together. It joins the cut exhaust tube along with main glass tube and mount. This is the first step of lamp making.

The pre cut lengths of exhaust tube are loaded in the exhaust tube hopper wherein every head is allowed to load single tube two positions, are used for loading mounts and then finally the glass tube is loaded on the sealing head.

The loaded components on the head goes through pre heating, melting and pinching operations and the molten exhaust tube and main glass tube joint is reblown to get the perfect seal. The tube is unloaded on an annealing conveyor where the sealed portion passes through the annealing oven.

This tube is discharged for further process to fusion / exhaust.