Title of Invention

AN APPARATUS FOR CUTTING MULTIPLY AMORPHOUS ALLOY RIBBON TO THE DESIRED LENGTH

Abstract This Invention relation to an apparatus for outting multiply amorphous alloy ribbon to the desired lenghts automatically It consists of an unooiler for unwinding spools of ribbon from a wound ooro seneing means senses and control the length of unwound ribbon which is fed to feed roller and from there to shearing means which out the ribbon as desired .A conveyor means is providad to coonvey the out ribbon to a stacking table. Control means control tha operations of this uncoiler, the feed rollers , the shearing means of the conveyor signal from the moneing means. PRICE: THIRTY RUPEES
Full Text



This invention relates to an apparatus for cutting multiply amorphous alloy ribbon to desired length and is particularly useful in making transformer cores.
Transformer cores are formed by winding amorphous alloy ribbons. Conventionally a large number of amorphous alloy ribbons are wound to produce a transformer core. Variations in the physical properties of the different pieces of single ply ribbons that go into the making of a core, affect the stacking factor and uniformity of the cores produced.
In order to overcome this drawback, we developed an apparatus for multiply winding of amorphous alloy ribbon which is the subject matter of our copending patent application no.l410/MA/96. This apparatus consists of a plurality of uncoilers for single ply amorphous alloy ribbons. These are fed to a single recoiler through shaking or aligning means to produce a multiply amorphous core ribbon suitable for making transformer cores.
The multiply amorphous alloy ribbons must be cut to the desired length and then wound to fonn transformer cores. The ribbon may be annealed prior to core tbrmation. Mechanical or manual cutting is time consuming as the wound ribbon will have to be uncoiled and the desired length measured before manually cutting the same. Stacking the cut plys will amount to additional labour. In order to overcome these disadvantages, we have developed an automatic machine which uncoils the multiply ribbon to a predetermined length, cuts it and makes it ready for stacking.

The apparatus consists of a single uncoiler, a core feeder assembly, shearing means, conveying means, stacking means and sensors connected to a control panel with control means and power supply. The different parts of the apparatus are described in detail hereinbelow.
The Uncoiler :
The uncoiler is for uncoiling a wound spool of multiply amorphous alloy ribbon. It consists of a drivable gear housed in a metallic body. An AC motor with variable speed motor controlled by an ultrasonic sensor through a programmable logic control circuit is connected to the gear for driving the same. The uncoiler has expansion and collapsible means which are operated by hydraulic cylinders driven by a DC motor. The expansion and collapse means uncoils the spool from the wound coil of multiply amorphous alloy ribbon mounted in the uncoiler. The rate of uncoiling is controlled by infra-red sensors provided to sense the loop length.
The core feed roller assembly :
The feed roller assembly consists of two feed rollers drivable by a gear. The assembly has pneumatic lifting means such as pneumatic cylinders which will move the top roller up and down. The gear assembly is housed in a metallic housing and the entire feeder roller assembly is mounted on a structure preferably a metallic frame. The feeder roller assembly is

Connected to a pulse taohometer for measuring the speed of rotataion to feed the uncoiled multiply filament from the uncoiler to the feeder rollers as per requirements.
The Shear :
The shear is a means for shearing or cutting the uncoiled multiply ribbon at the desired length. The shearing means consists of two Tungston Carbide blades fixed to a frame or a metal body. These blades are adjustable with the help of adjusting means operable hydraulically.
The Conveyor :
The conveyor consists of a belt supported by support rollers and is drivable by a geared motor. Preferably, the conveyor is a belt with mechanical metal structure. The conveyor is connected to the shearing means at one end and to the stacking table at the other end and carry the cut material from the shearing means to the stacking table.
The Stacking table :
Consists of structure with its top surface aligning with the conveyor belt. The table is preferably metallic. The cut multiply ribbons received from the conveyor belt is stacked on the stacking table.

The Sensors :
Are known electronic sensing means consisting of sensing elenents and signal transfer elements. The sensors are preferably infrared sensors and they control the uncoiled loop received from the uncoiler before the sane is fed to the shearing neans.
The Control Panel :
Controls the operation of the apparatus. The Control panel consists of push button stations connected to the motor for rotating the uncoiler. Drive can be in the forward and reverse direction. The Control panel is also provided with means for expansion and collapse of the uncoiler mandrel for controlling the speed of the ply uncoiled from the spool to the shearing means. Means for controlling the up and down movements of the feeder rollers for controlling the shearing is also provided. The control panel is also provided with means for emergency stopping of the system.
The apparatus for cutting multiply amorphous alloy ribbon to desired length according to this invention comprises an uncoiler for uncoiling wound spools from a oore of multiply amorphous alloy ribbon, for feeding the said spools to a feed roller assembly, shearing means for cutting the spools to the desired length, conveyor means for conveying the said cut spools from the

shearing means to a stacking means, sensing means for sensing and controlling the uncoiled spools from the uncoiler to a predoternined length, and a control panel for controlling the operation of the apparatus.
The apparatus according to this invention and the method of its operation will now be described in detail with reference to the single figure in the accompanying drawing.
Reference letter A stands for the uncoiler for uncoiling a spool of wound multiply amorphous alloy ribbon which is pulled through a feeder roller assembly indicated by (B) sensing means 0 controls the length of the uncoiled spool (F) and stops uncoiling or pulling when a predetermined length is reached. The shearing means C to which the length of the spool is fed from the feeder roller cuts the multiply ribbon with the Tungston cutting blades which is then transferred through the conveyor means (D) to a stacking table E. The apparatus is electrically connected through control panel H which has push buttons for controlling the operations. The cutting operations are programmed to continue sequentially till the desired number of lengths are cut. Sensing mechanism consists of sensing elements and signal transfer elements which transfer the signals to programmable logic control circuits. The programmed sequential operation of this apparatus Increases the efficiency of cutting and avoids the drawbacks of mechanical shearing and cutting of multiply ribbons. Reference letter F shows the uncoiled ribbon flowing to the feeder rollers.

It will be obvious to persons skilled in the art that numerous variations and modifications are possible without departing from the basic inventive concept. All such modifications and variations are to be considered within the scope of the present invention, the nature of which is described hereinabove and claimed in the appended claims.


WE CLAIM:
1. An apparatus for cutting multiply amorphous alloy ribbon to desired length comprising an uncoiler (A) for uncoiling wound spools from a core of multiply amorphous alloy ribbon, for feeding the said spools to a feed roller assembly (B), shearing means (C) for cutting the spools to the desired length, conveyor means (D) for conveying the said cut spools from the shearing means to a stacking means (E), sensing means (G) for sensing and controlling the uncoiled spools (F) from the uncoiler to a predetermined length, and a control panel for controlling the operation of the apparatus.
2. The apparatus as claimed in claim 1, wherein the uncoiler, the feeder roller assembly, the shearing means and the conveyor means have deviable gears located in housings.
3. The apparatus as claimed in claim 1, wherein the sensing means has sensing elements and signal transter elements.
4. The apparatus as claimed in claim 3, wherein the sensing element is an infra red sensor and is connected to programmable logic circuit controller.
5. The apparatus as claimed in claim 1, wherein the feeder roller assembly has two rollers, and pneumatic means for moving the top roller up and down.

6. The apparatus as clained in claim 5, wherein the feeder roller assembly is connected to a pulse tachometer to measure and control its speed of rotation.
7. The apparatus as claimed in claim 1, wherein the shearing means has tungston carbide blades fixed to a frame.
8. The apparatus as claimed in claim 7, wherein the tungston blades are adjustable.
9. The apparatus as claimed in claims 7 and 8, wherein the shearing means is provided with adjusting means operable hydraulically.

10. The apparatus as claimed in claim 1, wherein the conveyor is a belt supported on rollers and drivable by a geared motor.
11. The apparatus as claimed in claim 1 and 10, wherein the belt is metallic and is connected to the shearing means and the stacking means.
12. The apparatus as claimed in claim 1, wherein the stacking means is a table like structure preferably metallic.

13. The apparatus as claimed in claim 1, wherein the control means is a
control panel which connects the uncoiler, sensing means, feeder
rollers, cutting means and the conveyor means.
14. The apparatus as claimed in claim 13, wherein the control panel has
push button stations to regulate the operations of the uncoiler, the feed
rollers, the cutting means and the conveyor means.
15. The apparatus as claimed in claim 13 and 14, wherein the control
panel is provided with a control switch for controlling the up and
down movement of the feed roller.
16. The apparatus as claimed in claim 13, wherein the control panel has a
stopping switch tor emergency stopping of the apparatus.
17. The apparatus as claimed in claim 13, wherein the control panel has a
switch means for forward and reverse driving of the uncoiler.
18. An apparatus for cutting multiply amorphous alloy ribbon to desired
length substantially as hereinabove described and illustrated with
reference to the accompanying drawings.


Documents:

1411-mas-1996 abstract.pdf

1411-mas-1996 claims.pdf

1411-mas-1996 correspondence-others.pdf

1411-mas-1996 correspondence-po.pdf

1411-mas-1996 description (complete).pdf

1411-mas-1996 drawings.pdf

1411-mas-1996 form-1.pdf

1411-mas-1996 form-26.pdf


Patent Number 193255
Indian Patent Application Number 1411/MAS/1996
PG Journal Number 02/2006
Publication Date 13-Jan-2006
Grant Date 10-Nov-2005
Date of Filing 09-Aug-1996
Name of Patentee VIJAY ELECTRICALS LIMITED
Applicant Address INDUSTRIAL DEVELOPMENT AREA, BALANAGAR, HYDERABAD 500 037
Inventors:
# Inventor's Name Inventor's Address
1 K RAJA SEKHAR C/O. VIJAI ELECTRICALS LIMITED, 28, I.D.A. BALANAGAR,
2 CH SAI PRAKASH PLOT NO.55, R.NO.8, JUBLI HILLS,
PCT International Classification Number B23D21/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA