Description

ROTARY TYPE STORAGE UNIT/MAGAZINE FOR UNFINISHED/FINISHED RUBBER COT ARBOUR LOADING/UNLOADING SYSTEM AND AN AUTOMATIC RUBBER COT GRINDING/BUFFING MACHINE COMRPISING THE SAME

BACKGROUND OF THE INVENTION

This invention relates to Rotary type storage unit/magazine for unfinished/finished rubber cot arbour loading/unloading system and an automatic rubber cot arbour grinding/buffing machine comprising the same.

More particularly this invention relates to a rotary type storage unit/magazine for loading/unloading a large number of unfinished/finished rubber cot arbour in automatic rubber cot grinding/buffing machine, wherein of the said rotary type magazines are adopted to be provided side by side on the same side of rubber cot arbour grinding/buffing machine and each of the said rotary type magazine having a large number radial slots provided in a pair of discs so as to occupy a small space and thereby making the automatic rubber cot arbour grinding/buffing machine is a compact and ergomatic.

Rubber cot arbour mainly comprises a steel spindle or axle provided with one or two rubber cots used as top rollers in Ring Frame, Speed Frame, Draw Frame, Combers, etc. of cotton/synthetic yarn spinning mills, in the textile industries.

The arbours or top rollers used in Draw Frames or Combers are provided with single long cot up to 400 mm in length in the middle of the axle portion, while the arbours or top rollers used in Ring Frames or Speed Frames are provided with a pair of cots, one each at the two ends of the axle. The cots are preferably made of rubber. A very large number of top rollers or rubber cot arbours are used in a Spinning mill/machine, which work continuously at a high speed.

Regular grinding of the rubber cot arbours is required for ensuring quality of yarn by reducing thread breaks and minimizing lap formation. Generally centreless grinding is used for rubber cot arbours of Ring Frames and Speed Frames and 'with centre grinding' is used for Draw Frames and Comber Cots.

Rotary type storage unit/magazine for loading/unloading rubber cot arbour are also known and used in the automatic rubber cot arbour grinding machines sold in the market under the brand name εERKOL' ®

manufactured by ^λ HUBER + SUHNER'. But in the existing rubber cot arbour grinding machines the draw back are as under:

Rubber cot arbour storage magazine has low capacity and, hence requires frequent loading and unloading of arbours, needing frequent attention of the operator and taking more time.

Unfinished job arbour magazine entry is over the grinding stone wheel head unit and the exit is from the back side of the grinding wheel resulting into inline or angular longer path, making the machine operations complicated and needing more floor space even with low capacity.

The capacity of the loading/unloading storage unit/magazine is not adequate thereby needing frequent loading of unfinished rubber cot arbours as well as frequent unloading of finished rubber cot arbours, thereby needing more man power for handling the rubber cot arbour grinding machine.

In the existing rubber cot arbour loading/unloading units/magazine rubber cot arbours are not safely loaded / unloaded.

In the existing rubber cot arbour loading/unloading units/magazine adjustment for accommodating various sizes of rubber cot arbour is complicated.

In the existing rubber cot arbour loading/unloading units/magazine loading of the unfinished rubber cot arbour from the storage unit/magazine to the grinding machine is not very smooth as well as unloading of the finished rubber cot arbours form the grinding machine to the storage units/magazine is also not very smooth.

In our co-pending patent application no. 1681/MUM/2006 Storage unit/magazine for loading/unloading rubber cot arbours in the automatic rubber cot arbour grinding/buffing machine has been described and claimed, which comprises a pair of identical rubber cot arbour storage units adopted to the provided side by side only on one side of the automatic rubber cot grinding/buffing machine, each of the said rubber cot arbour loading/unloading unit/magazine consisting of a plurality of trays being kept inclined and arranged vertically in a spaced apart manner in a pair of columns, mounted on a pair of frames keeping the two trays of a pair at the same level with an adjustable central gap, as desired, forming a straight track for the rubber cot arbours.

In our co-pending patent application no. 1682/MUM/2006 An automatic rubber cot arbour grinding/buffing machine has also been described and claimed comprising an unfinished arbour storage unit/loading machine for safe storing of a large number of unfinished arbour in minimum floor space, an unfinished arbour conveyer unit provided adjacent to the said loading magazine for taking the arbour from the said loading magazine and smooth conveying to a measuring unit or a carriage one by one, a rubber cot diameter measuring unit, provided adjacent to the said unfinished arbour conveyer unit, for measuring the cot diameter one by one and comparing with the predetermined set diameter, as pre programmed for rejecting of the arbours, not suitable for grinding in the rejection tray, a loading -unloading carriage provided adjacent to the said measuring unit, for loading unfinished arbours to an arbour holder unit for grinding and simultaneously unloading finished arbour after grinding into a finished arbour conveyer unit, a centre less rubber cot arbour holding and guiding the device provided substantially perpendicularly to the said arbour loading-unloading carriage, for one by one holding and precisely guiding the unfinished arbour for grinding and pushing out the finished arbour after grinding, on to the said carriage for unloading, a grinding wheel head unit, provided adjacent to the said arbour holder unit, movable along X-axis and Y-axis for grinding/buffing the rubber cot arbours as per presetting of fix diameter or fix cut, a dressing tool unit, provided adjacent to the said grinding wheel head unit, for dressing the

grinding wheel after grinding a predetermined number of arbours, a finished arbour conveyer unit, provided adjacent to the said carriage on its unloading end for smoothly conveying the finished arbour one by one to a finished arbour storage unit /unloading magazine provided adjacent to the finished arbour conveyer unit and adjacent and parallel to the said unfinished arbour storage unit/loading magazine. A control panel for controlling all the operations of arbour grinding machine in a sequence as per desired program, all the units being mounted on a main frame and enclosed in a body having suitable doors, windows and covers.

The main object of this invention is while obviating all the draw backs of the existing rubber cot arbour grinding machine, is to provide an alternative to the unfinished/finished rubber cot arbour storage unit/magazine of our co-pending patent application nos. 1681/MUM/2006, which is capable of storing large number of rubber cot arbours in the radial slots of a pair of discs, which is rotated in a controlled manner and used for loading unfinished rubber cot arbours as well as unloading finished rubber cot arbours in the automatic grinding/buffing machine smoothly without needing unfinished rubber cot arbour conveyer unit as well as finished rubber cot arbour conveyer unit and thereby making the automatic rubber cot arbour grinding/buffing machine of our co-pending patent application no. 1682/MUM/2006 further compact and ergomatic.

Another object of this invention is to provide rotary type storage unit/magazine for loading/unloading rubber cot arbours in which a large number of unfinished as well as finished rubber cot arbours can be store in a smaller space thereby increasing the loading capacity of the grinding machine, while maintaining its compactness.

Further object of this invention is to provide rotary type storage unit/magazine for loading/unloading rubber cot arbours in which frequent loading as well as unloading rubber cot arbour in an from the grinding machine is not require thereby reducing the man power.

Further object of this invention is to provide rotary type storage unit/magazine for loading/unloading rubber cot arbours in which the adjustment to accommodate various sizes of rubber cot arbours is very simple and easy.

Further object of this invention is to provide rotary type storage unit/magazine for loading/unloading rubber cot arbours in which transfer of the unfinished rubber cot arbours from the unfinished rubber cot arbour storage unit to the measuring unit/carriage as the case may be is very smooth as well as transfer of the finished rubber cot arbours from the carriage to the finished rubber cot arbour rotary type storage unit is also

very smooth, thereby making the functioning of the automatic grinding machine very smooth.

Further object of this invention is to provide Storage unit/magazine for loading/unloading rubber cot arbours in which finished as well as unfinished rubber cot arbours are loaded and stored safely.

Accordingly this invention provides a rotary type storage unit/magazine for loading/unloading rubber cot arbour, comprising a pair of identical rubber cot arbour rotary type storage units adopted to the provided side by side only on one side of the automatic rubber cot grinding/buffing machine, each of the said rotary type rubber cot arbour loading/unloading storage unit/magazine consisting of a pair of discs provided with plurality of radial slots the said pair of discs being mounted on a central screw having nuts supported on a column(s), the said discs being rotate intermittently by a rotating means and the gap between the two disc being adjustable to accommodate various sizes of the rubber cot arbour with the help of adjusting means.

Typically, the discs are made of metal.

Typically, the said discs are made of aluminum, mild steel or the like.

Typically, the said discs are hardened/anodized.

Typically the said screw and nuts are supported on pedestals fixed on the said columns.

Typically, the said discs are rotated manually with help of handle provided at one end of the said screw.

Typically, the said discs are rotated with the help of a prime mover with power transmission means provided with the said screw.

Typically, the said prime mover is a geared electric motor.

Typically, the said power transmission means is belt and pulley or chain and its procket mounted on the said screw.

Typically, the said adjusting means for adjusting the gap between the two discs is a rack and pinion or a crew and nuts operated manually with the help of the handle.

Typically, the said adjusting means for adjusting the gap between the two discs is a rack and pinion or a screw and nuts operated by a prime mover with power transmission means such as electric motor.

This invention also provides an automatic rubber cot arbour grinding/buffing machine, incorporated with Rotary type storage unit/magazine for loading/unloading rubber cot arbours of this invention.

The invention will become more clear from the following description with reference to accompanying drawings wherein -

Fig. IA, IB & 1C : Show front view/elevation, top view/plan and side view respectively without side cover of the automatic rubber cot arbour grinding/buffing machine, of our co-pending patent application no. 1682/MUM/2006.

Fig.2 : Shows front view/elevation without side covers of the automatic rubber cot arbour grinding/buffing machine, having rotary type storage unit/magazine for loading/unloading rubber cot arbour, according to and embodiment of this invention.

Fig.3 : Shows schematic diagram of rotary type unfinished rubber cot arbour storage unit showing feeding of the unfinished rubber cot arbour from the rotary type magazine to the measuring unit of the automatic rubber cot arbour grinding/buffing machine.

Figs. 4: Shows schematic diagram of rotary type finished rubber cot arbour storage unit showing delivering of the finished rubber cot arbour from the carriage of the automatic rubber cot arbour grinding/buffing machine to the rotary type finished rubber cot arbour storage unit/Magazine.

Figs. 5 : Shows schematic side view of the rotary type storage unit/magazine, according to and embodiment of this invention.

Fig. 6 : Shows schematic side view of the rotary type storage unit/magazine loaded with rubber cot arbour, according to and embodiment of this invention.

Referring to Fig. 1, the automatic rubber cot arbour grinding/buffing machine (1), comprises of an unfinished rubber cot arbour storage unit/magazine (2) for safely storing a large number of unfinished rubber cot arbours (3) while occupying minimum floor space; a finished rubber cot arbour storage unit/magazine (4) for safely storing a large number of finished rubber cot arbours (5) while occupying minimum floor space, provided parallely and adjacent to the unfinished rubber cot arbours loading magazine (2) an unfinished rubber cot arbour conveyor system

(6) for conveying the unfinished rubber cot arbours (3) from loading

magazine (2) to a measuring unit (7) one by one quickly, without consuming much time or wasting any time; a loading/unloading carriage (8) for loading the unfinished rubber cot arbour, preferably after measuring the diameter of rubber cot in the measuring unit (7) and when not rejected but found suitable for grinding and simultaneously in sequence unloading the finished rubber cot arbour (5) from arbour holder unit (9) to a rubber cot arbour holding and guiding after grinding, to unloading conveyor system (10) for onward conveying to finished rubber cot arbours storage unit/unloading magazine (4), a grinding wheel head unit (11) movable along ^λ X' axis and υ' axis for grinding/buffing the rubber cot arbours as per preset of fixed diameter or fixed cut; a diamond dressing tool unit (12) for dressing the grinding wheel/emery stone, after grinding a predetermined number of rubber cot arbours and a control panel (13) for controlling all the operational sequences smoothly as per desired program. The various units/systems mounted on a frame (14) and enclosed in a body (15) having suitable doors, windows and covers of our co-pending patent application no. 1682/MUM/2006.

Referring the figs. 2, which shows schematic diagram of the automatic rubber cot arbour grinding/buffing machine, which is similar to the automatic rubber cot arbour grinding/buffing machine shown in fig. 1 as described above, in which only difference being that rack type rubber cot arbour storage unit/magazine (2,4) for unfinished/finished rubber cot

arbours have been replaced by rotary type storage unit/magazine(16,17) and the conveyer unit (6 & 10) have been eliminated, the rotary type storage unit/magazine (16,17) have been provided side by side only one side of the grinding machine hereby making the automatic rubber cot arbour grinding/buffing machine further compact. A large number of radial slots(18) provided in a pair of discs(19,20) accommodates a large number of unfinished/finished rubber cot arbours in a small space, thereby increasing the storage capacity and productivity of the automatic rubber cot arbour grinding/buffing machine.

Referring to figs. 3 to 6, each of the rotary type storage unit/magazine (16,17) comprises a pair of discs (19,20) preferably made of metal such as aluminium or steel, which is preferably hardened/anodised. Each of the discs (19,20) is provided with a plurality of the redial slots(18) to accommodate therein a large number of rubber cot arbours. Rubber cot arbour depends upon the number of radial slots (18) and the size of the discs (19,20), which can very according to the requirement. A Pair of discs (19,20) mounted on a central screw (21) with the help of nuts(22) provided with hand wheel (23) at one end for rotating the central screw(21) manually. Other end of the screw (21) is provided with the transmission mechanism such as pulley(24), connected to a geared motor(25) with the belt or chain or the like(26) provided with the help of the motor or a prime mover. The screw (21) with nut (22) are supported

on pedestals (27) mounted on columns (28). The gap between the to discs (19,20) is adjustable for accommodating various size of the rubber cot arbours with the help of adjusting means such as rack and pinion or screw and nut either manually with help of handle or by prime mover such as electric motor with the power transmission means.