Wire feeder torch

A torch wire feeder which includes a planetary feeder, an electrical motor and a handle. The feeder is characterized in that the electrical motor along with the planetary head is mounted to a back holder, and the goose-neck is mounted to a front holder, as the front and the back holders are assembled with the tubes for water-cooled and gas-cooled operation, as the back holder receives the wire from the conduit with holder thread nut. Furthermore, water tubes and a gas tube from the conduit are assembled to the back holder with a nut, and the front holder has distributor holes for gas and water cooling and also thread nut for transmitting the welding current, the water and the gas from the conduit to the neck, also contacting the holder to the thread nut with rubber seal, as all the parts are assembled to the handle with ergonomic form and also containing two potentiometers and start-stop switch and the hook, a all details and parts are included in ergonomic form body.

FIELD AND BACKGROUND OF THE INVENTION 
The present invention is of a torch feeder including a handle for a MIG 
torch combined with a goose-neck MIG torch for both push-pulling and 
pulling applications in semi-automatic and robotic welding. 
SUMMARY OF THE INVENTION 
The torch wire feeder includes an electrical motor, planetary head, front 
and back holders, electrical conductivity tubes connecting the holders, 
goose-neck torch, gas and water conduits, switch for start-stop of the 
feeding, two potentiometers for speed and arc voltage regulation and 
handle including all the functions in detail inside and in ergonomic form 
of the outside, and also with 360.degree. positioning of the neck. Two 
applications of this torch are possible: for water-cooled neck and 
conduits, and for gas cooled necks and conduits. 
Most of the push-pulling torch feeders available on the market today are of 
pistol type design. This type of system causes fatigue to the welder and 
does not allow him to weld inside narrow spaces. The torch for 
push-pulling with goose-neck construction currently existing in the 
practice is designed for low welding current, without 360.degree. 
positioning of the neck. Both existing systems are heavy in comparison 
with the normal MIG torch (MIG torch without wire feeder). All 
constructions existing at the moment do not have enough temperature 
capacity in the welding of aluminum with pure Argon gas. The big problem 
with the existing torch feeders is the non-ergonomic styling of the 
outside form of the handle caused by the large dimensions of the wire 
feeder component used in these feeders. All torch-type feeders currently 
existing in the practice, damage poor-quality wire then damages the 
contact tip and the spares for the torch. 
The new invention is a goose-neck wire feeder torch with ergonomic form, 
with low weight, with quality wire feeding, without damage to wire, 
without excessive use of additional contact tips or spares, with high 
welding current and temperature resistance in pure Argon gas welding, with 
small dimensions compared with the regular MIG welding torch (MIG torch 
without wire feeder). For this purpose, the invention uses a planetary 
head with very small dimensions and a high feeding efficiency coefficient 
connected with an electrical motor with a hollow shaft. This motor is 
based in a special body with front and back holders. The back side of the 
motor is fixed to the back holder. The back holder also has holes for 
tubes, each hole having a tube for shielded gas and for cooling water. The 
same holder is fixed to the welding cable (water-or gas-cooled) and also 
is fixed to a gas tube for the shielded gas and water tubes for hot and 
cold water. The front holder has distributor holes for shielded gas, 
cooling water and a guide for wire received from the planetary head. On 
the front side of the front holder, is a format thread for transmitting 
the welding current and two cylindrical chambers for water distribution 
from the torch feeder to the neck. The neck may be water-cooled to 500 
amperes welding current or gas-cooled to 400 amperes welding current. The 
neck is fixed to the front holder with a threaded nut in the thread of the 
front holder. This assembly allows for neck rotation of 360.degree.. 
Between the front and the back holder is a connection tube assembly, two 
tubes for water cooling and one for shielded gas. These transmit the 
welding current between the welding conduit cable and the neck and also 
transmit water and gas from the conduit tubes to the neck. The welding 
wire is delivered from the wire guide tube in the conduit to the back 
holder and through the hole of the motor shaft and then through the 
planetary head receiving a linear motion for feeding the wire to the neck 
for welding. All the parts described above are contained in the body of 
the handle with ergonomic form and low weight. In addition, the body 
handle contains two potentiometer for speed and arc voltage control 
regulation and a switch for start-stop of the process. 
This torch feeder has the following advantages: 
low weight 
small dimensions, even when compared with standard MIG torch 
360.degree. neck rotation 
ergonomic form 
very light welding operation, without fatiguing the operator 
possibility of welding in narrow spaces 
universality for water-and gas-cooled applications 
suitable for heavy-duty welding with pure Argon gas protection

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
A more detailed explanation of the feeder torch, according to FIGS. 1-13 is 
as follows: 
The planetary head-1 is connected to the motor-2 with hollow shaft-16. The 
motor-2 is based in the back holder-3 with screws-17. The back holder-3 
has distributor holes-4,5,6 for transmission of water and gas. The wire 
guiding tube-18 with the conduit-9 is assembled to the back holder-3 with 
nut-7. The gas tube-19 from the conduit-9 is assembled with the gas tube-5 
with a nut, and the welding cable-21 with the tube-6 and water outlet with 
the tube-4. The front holder-13 is assembled with brazing with the 
tubes-4,5,6. This holder-13 has distributor hole-25 for gas and 
distributor holes-23,23 for water. The gas is connected to the neck-15 
with diffuser-24. Also, the water is connected to the neck-15 with the 
distributor holes 22,23. The welding current is transmitted from the 
welding cable-21 to the front holder-13 and the neck-15 with tubes-4,5,6. 
The neck-15 is assembled with the front holder with thread and nut-14 for 
welding current transmission. Between the neck body-26 and the front 
holder-13 is sealing with rubber seal-27. The same seal-27 is for 
water-and gas-insulation. All of these parts are included in the handle-12 
and 12' (12 is the right and 12' is the left part of the handle). In 
addition, in the handle-12 and 12' is mounted switch-11 and two 
potentiometers-28,29 for wire speed and arc voltage control. For fixing to 
the welding table, the handle has hook-30. The wire-32 from the 
conduit-9(10) is push-pulled with the planetary head-1 to the guide-31 and 
to the neck-15. 
In the gas-cooled version of the torch feeder, the tubes-4,6 are prepared 
like rods 4',6' instead of increasing the cross section of the welding 
transmission body, and the nut-7 is male screw 7' with fixator-33. 
While the invention has been described with respect to a limited number of 
embodiments, it will be appreciated that many variations, modifications 
and other applications of the invention may be made.