Claims:I claim,
1. A chip collecting unit of a welding tip dresser works on the principle of suction and low pressure vacuum, the spill out chips from the grinding unit are converged to suction unit by two opposite chip diversion plates and a pressurized air inlet from the third side, the said suction units are accompanied by a vacuum unit (4) (17) which is equipped with two air inlets to direct entire metal chips towards the storage container (9) consists of;
a) electrode grinding unit
b) pressurized air inlet
c) suction unit (3) (11)
d) vacuum unit (4) (17)
e) air inlet valves (5) (10)
f) chip collector hose (6)
g) chip container (9)
2. The chip collector unit for tip dresser as claimed in claim 1a, wherein electrode grinding unit is equipped with removable mounting plate (2) used for opening and closing during maintenance of the grinding unit.
3. The chip collector units for tip dresser as claimed in claim 1c, wherein two suction units (suction unit I and suction unit II) are provided for handling larger collection of spill out chips.

4. The chip collector unit for tip dresser as claimed in claim 1e, wherein size of vacuum unit (4) (17)is increased from 40 mm to 60 mm is used for better handling the spill out metal chips.

5. The chip collector unit for tip dresser as claimed in claim 1, wherein two air inlet valves are used in the vacuum unit (4) (17)to flush out entire collected metal chips to the storage container.

6. The chip collector unit for tip dresser as claimed in claim 5, wherein the size of air inlet valve is increased from 6 mm to 10 mm for quick processing the gathered chips from vacuum unit (4) (17) to chip container (9).

7. The chip collector unit for tip dresser as claimed inclaim3, wherein with the improvised suction unit-I (3) and suction unit-II (11) entire spill out chips are directed towards vacuum unit.

8. The chip collector unit for tip dresser as claimed in claim4, wherein with the modified size of vacuum unit (4) (17) the capacity of chip handling is increased.
9. The chip collector unit for tip dresser as claimed in above claims, wherein it assures dust free environment in welding tip dressing process.

10. The chip collector unit for tip dresser as claimed in above claims, wherein the said apparatus may suit to any welding tip dresser arrangement.
, Description:DETAILED DESCRIPTION OF INVENTION
[0010] The present invention discloses a welding tip dresser unit for removing/grinding robotic armed welding electrodes in an automated production line. In general an advanced welding tip dressing mechanism consists of two operations viz. (i) welding electrode grinding mechanism and (ii) chip recovering operation. The present invention proposes a chip collector unit by adding developments on chip recovering operations.
[0011]Fig 1depicts the proposed model of chip recovering mechanism. The proposed chip collector (fig 1) is aligned with an electrode grinding unit using chip collector mounting plate (1) to give a complete model of welding tip dressing unit.
[0012]The tip dressing unit has a rotary board with an aperture (12)for receiving welding electrode tip and a plurality of claws disposed around the aperture (12)which are made to move for electrode grinding operation. The top body of the rotary board is made with a removable mounting plate (2) (2). The said mounting plate may open/close during maintenance of grinding components present inside the grinding unit.
[0013] In performing grinding operation the metal chips may spilling out in all directions surrounding to grinding aperture (12). From the surface view of grinding aperture the two opposite sides are built with chip diversion plates; the third side is equipped with pressurized air inlet which is used to channelize the entire spill out chips towards the fourth side. The fourth side is equipped with two suction units (3) (11) (only one suction unit available in prior art) to absorb the entire spill out chips.
[0014]The two suction units are used as suction unit-I and suction unit-II. It is used to draw the spill out chips in a directed path to reach the low pressure vacuum unit. In the available chip dressing mechanism only one suction unit is used, for better handling the spill out chips the proposed invention employs two suction units. Both the suction units are exactly placed adjacent to electrode grinding unit (on the said fourth side). An electrode grinding aperture (12) is between the compressed air injection and the said suction units.
[0015]Next to the suction unit vacuum unit (4) (17) (upgraded with a size of 60 mm with an already available 40 mm) is positioned to support the suction system. Because of low pressure prevailing in the vacuum unit (4) (17) all the chips are driven into the vacuum and two high pressure air inlets are used to channel the collected chips along collector hose (6). The available vacuum unit (4) (17) in the chip dressing mechanism is of 40 mm, in the proposed chip dresser the size of the vacuum unit (4) (17)is increased to 60 mm for better handling the chip collection.
[0016]Two air inlet valves (upgraded with a size of 10 mm with already one air inlet of size 6 mm) are added with the vacuum unit (4) (17)to direct the collected chips towards the collector hose (6). The collector hose (6) leads the tail to store entire collected chips in a chip container (9).