FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See Section 10; rule 13)
TITLE OF THE INVENTION
An improved scrap chute with floating lever elevator for die
machines
APPLICANTS
TATA MOTORS LIMITED, an Indian company
having its registered office at Bombay House,
24 Homi Mody Street, Hutarma Chowk,
Mumbai 400 001 Maharashtra, India
INVENTOR
BOD AS CHANDRASHEKHAR A
an Indian national
of TATA MOTORS LIMITED an Indian company
having its registered office at Bombay House,
24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the nature of invention and the
manner in which it is to be performed.

Field of Invention:
The present invention is related to a stamping die machines and more particularly it relates to an improved scrap chute with floating lever elevator for stamping die machines.
Background of Invention:
Generally a panel stamping die is a kind of tool which converts a sheet metal to a sheet metal component with desired form size. There are mainly cutting and non cutting types of dies with upper and \ower die. Non cutting dies give desired form and shape to the component. The cutting dies provide desired size, notches, holes and cutouts to a sheet metal component. In cutting dies, undesired part of the component is cut and shaded away from the die.
Stamping dies are normally provided with scrap chutes which shade away the scrap generated from the die. For assured and consistent scrap shading, the said scrap chutes are fixed on the lower die with minimum of 30 degree angle to the ground for effective gravity scrap shading.
In case of less shut height of the die, where the increase in said shut height is not possible, the scrap chute angle becomes less than 30 degree which results in in-efficient normal gravity scrap shading and the scraps generated at the dies needs to be manually removed for clearing the scrap chutes which requires additional manpower. The automated scrap shading system comprising power train or pneumatic conveyor requires additional power for driving such equipment which are not cost effective and not environment friendly since such system generates more carbon. Also manual removal of scrap requires additional man power which results in more through put time and also finally cost of component increases.

The present invention is an attempt to develop an improved scrap chute with floating lever elevator for die machines which is simple in construction and very cost effective.
Object of invention:
The main object of the present invention is to provide an improved scrap chute with floating lever elevator for die machines.
Another object of the present invention is to provide an improved scrap chute with floating lever elevator for die machines which is simple in construction and cost effective with higher productivity.
Statement of invention
An improved scrap chute with floating lever elevator for die machine comprises; an upper die (01) with at least two guide bushes (01A and 01B); a lower die (02) having guide pillars (02A and 02B); said Upper die (01) having an upper riser block (03) for mounting a upper die block (04); said lower die (02) having a lower riser block (05) for mounting a lower die block (06); said upper die block (04) and lower die block (06) are arranged for making sheet metal component (06A); said lower die (02) having a scrap chute (07) which is supported with a rubber stopper (08) and provided for scraping of sheet metal component (06B); said scrap chute (07) is mounted at hinge member (09); said upper die (01) comprises an elevator member with a floating lever (12) such that during return stroke of said upper die (01) said floating lever (12) lifts the said scrap chute (07) for scraping of sheet metal component (06B).
The said machine , in accordance with this invention, wherein lower end of said scrap chute (07) is hingedly mounted on lower die (02) at hinge member (09) and

upper end rests on said rubber stopper (08) such that said scrap chute makes an angle of 18 degree with the surface of said lower die (02).
The said machine, in accordance with this invention, wherein said scrap chute (07) makes an angle of 30 degree with the surface of said lower die (02) during return stroke of said upper die (01) wherein said floating lever (12) lifts the said scrap chute (07) to an angle of 30 degree for effective and consistent gravity scrap shading of said sheet metal component (06B) after the stamping operation.
The said machine , in accordance with this invention, wherein as the ram comes down, said upper die (01) also comes down which facilitate said elevator member having a floating lever (12) to come very close to the upper end of said scrap chute (07) and further downward proceeding of said ram said floating lever (12) floats up and allows said floating lever to pass the said scrap chute (07) and come to underneath said scrap chute (07).
The said machine, in accordance with this invention, wherein upper end of said scrap chute (07) comprises a round bar (07a) for engaging with the said floating fever (12).
The said machine, in accordance with this invention, wherein said floating lever (12) is mounted at lower end of an elevating member (12b), said floating lever (12) floats or rotates about a pivot pin member (12a).
The said machine , in accordance with this invention, wherein said elevating member (12b) is rigidly connected to said upper die (01) with the help of base block (12c), said floating lever (12) mounted at said pivot pin member (12a) which enables said floating lever (12) to float when said round bar (07a) pushes said floating lever (12) upwards.

The said machine, in accordance with this invention, wherein said elevating member (12b) comprises a stopper member (12d) provided to prevent the movement of said floating lever (12) in downward direction and ensures said floating lever (12) moves only in upward direction.
The said machine , in accordance with this invention, wherein said floating lever (12) elevates said upper end of scrap chute (07) about a hinge member (09) up to an angle of 30 to 38 degree to enable the scrap to shade away from the die with gravity.
Brief description of Invention
In accordance with the present invention, Improved scrap chute with floating lever elevator for die machines comprises; Upper die 01 with at least two guide bushes 01A and 01B; Lower die 02 with at least two guide pillars 02A and 02B; said Upper die 01 having an upper riser block 03 for mounting a upper die block 04; Lower die 02 having a lower riser block 05 for mounting a lower die block 06; said upper die block 04 and lower die block 06 are arranged for making sheet metal component 06A ; said lower die 02 having a scrap chute 07 which is supported with a rubber stopper 08 and provided for scraping of sheet metal component is 06B; said scrap chute 07 is hingdly mounted at hinge member 09; said upper die 01 comprises an elevator member with a floating lever 12 such that during return stroke of said upper die 01 said floating lever 12 lifts the said scrap chute 07 for scraping of sheet metal component 06B.
Brief description of drawings
Figure-01 shows the improved scrap chute with floating lever elevator in accordance with present invention.

Figure-02 shows the details of floating lever mounted on elevating member which is mounted on upper die with the help of base block.
Figure-03 shows details of scrap chute arrangement in accordance with present invention.
Detailed description of Invention
Referring now to the drawings wherein the showings are for the purpose of illustrating a preferred embodiment of the invention only, and not for the purpose of limiting the same,
In accordance with the present invention, Improved scrap chute with floating lever elevator for die machines comprises; Upper die 01 with at least two guide bushes 01A and 01B; Lower die 02 has guide pillars 02A and 02B; said Upper die 01 having an upper riser block 03 for mounting a upper die block 04; Lower die 02 having a lower riser block 05 for mounting a lower die block 06; said upper die block 04 and lower die block 06 are arranged for making sheet metal component 06A ; said lower die 02 having a scrap chute 07 which is supported with a rubber stopper 08 and provided for scraping of sheet metal component is 06B; said scrap chute 07 is hingdly mounted at hinge member 09; said upper die 01 comprises an elevator member with a floating lever 12 such that during return stroke of said upper die 01 said floating lever 12 lifts the said scrap chute 07 for scraping of sheet metal component 06B.
The lower end of said scrap chute 07 is hingedly mounted on lower die 02 at hinge member 09 and upper end rests on said rubber stopper 08 such that said scrap chute makes an angle of 18 degree with the surface of said lower die 02.
During return stroke of said upper die 01 said floating lever 12 lifts the said scrap chute 07 up to height such that said scrap chute 07 makes an angle of 30 degree

with the surface of said lower die 02. Lifting of said scrap chute 07 up to an angle of 30 degree is suitable for effective and consistent gravity scrap shading of said sheet metal component 06B after the stamping operation.
As the ram comes down, the said upper die 01 also comes down which facilitate said elevator member having a floating lever 12 to come very close to the upper end of said scrap chute 07.
Further downward proceeding of said ram said floating lever 12 floats up and allows said floating member having said elevator member to pass the said scrap chute 07 and come to underneath said scrap chute 07.
The upper end of said scrap chute 07 comprises a round bar 07a for engaging with the said floating lever 12.
At the end of the downward ram stroke the said floating lever 12 comes to its normal horizontal position. At this point of ram stroke, sheet metal component 06A is trimmed off and scrap 06B has fallen on said scrap chute 07.
As the press ram starts moving upwards the said elevator member having floating lever 12 elevates the said scrap chute 07.
Said floating lever 12 is mounted at lower end of an elevating member 12b. Said floating lever 12 floats or rotates about a pivot pin member 12a. Said elevating lever 12b is rigidly connected to said upper die 01 with the help of base block 12c. Said floating lever 12 mounted at said pivot pin member 12 which enables said floating lever 12 to float when said round bar 07a pushes said floating lever 12 upwards. The stopper member 12d provided to prevent the movement of said floating lever 12 in downward direction and ensures said floating lever 12 moves only in one direction which is upward direction. The said floating lever 12 floats up when said floating lever 12 is pushed in the upward

direction, when force is withdrawn or the upper end of said scrap chute reaches to upper limit, the said floating lever 12 is disengaged from said round bar 07a and said floating lever 12 falls back and rests to original position due to stopper member 12d.
The said elevating member having floating lever 12 elevates the upper end of said scrap chute 07 up to and angle of 38 degree which is upper limit. The said floating member having a floating lever 12 elevates said scrap chute 07 about a hinge member 09. The elevation of upper end of said scrap chute 07 up to an angle of 30 to 38 degree enables the scrap to shade away from the die with gravity.
The elevating member having a floating lever 12 releases the upper end of said scrap chute 07 which falls down and rests on said stopper member 08. This action is repeated with every stroke, during which component is trimmed off with a scrap which is shaded away effectively and consistently.
The present invention enables effective and consistent scrap shading without any additional carbon foot print, since there is no any electrical or pneumatic resource is required for the arrangement of present invention. The scrap shading is possible even in low shut height. The present invention is cost effective for scrap shading with low shut height.
The foregoing description is a specific embodiment of the present invention. It should be appreciated that this embodiment is described for purpose of illustration only, and that numerous alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof.

WE CLAIM:
1. An improved scrap chute with floating lever elevator for die machine comprises; an upper die (01) with at least two guide bushes (01A and 01B); a lower die (02) having guide pillars (02A and 02B); said Upper die (01) having an upper riser block (03) for mounting a upper die block (04); said lower die (02) having a lower riser block (05) for mounting a lower die block (06); said upper die block (04) and lower die block (06) are arranged for making sheet metal component (06A); said lower die (02) having a scrap chute (07) which is supported with a rubber stopper (08) and provided for scraping of sheet metal component (06B); said scrap chute (07) is mounted at hinge member (09); said upper die (01) comprises an elevator member with a floating lever (12) such that during return stroke of said upper die (01) said floating lever (12) lifts the said scrap chute (07) for scraping of sheet metal component (06B).
2. The said machine as claimed in claim 1, wherein lower end of said scrap chute (07) is hingedly mounted on lower die (02) at hinge member (09) and upper end rests on said rubber stopper (08) such that said scrap chute makes an angle of 18 degree with the surface of said lower die (02).
3. The said machine as claimed in claim 1, wherein said scrap chute (07) makes an angle of 30 degree with the surface of said lower die (02) during return stroke of said upper die (01) wherein said floating lever (12) lifts the said scrap chute (07) to an angle of 30 degree for effective and consistent gravity scrap shading of said sheet metal component (06B) after the stamping operation.
4. The said machine as claimed in claim 1, wherein as the ram comes down, said upper die (01) also comes down which facilitate said elevator member

having a floating lever (12) to come very close to the upper end of said scrap chute (07) and further downward proceeding of said ram said floating lever (12) floats up and allows said floating lever to pass the said scrap chute (07) and come to underneath said scrap chute (07).
5. The said machine as claimed in claim 1, wherein upper end of said scrap chute (07) comprises a round bar (07a) for engaging with the said floating lever (12).
6. The said machine as claimed in claim 1, wherein said floating lever (12) is mounted at lower end of an elevating member (12b), said floating lever (12) floats or rotates about a pivot pin member (12a).
7. The said machine as claimed in claim 1, wherein said elevating member (12b) is rigidly connected to said upper die (01) with the help of base block (12c), said floating lever (12) mounted at said pivot pin member (12a) which enables said floating lever (12) to float when said round bar (07a) pushes said floating lever (12) upwards.
8. The said machine as claimed in claim 1, wherein said elevating member (12b) comprises a stopper member (12d) provided to prevent the movement of said floating lever (12) in downward direction and ensures said floating lever (12) moves only in upward direction.
9. The said machine as claimed in claim 1, wherein said floating lever (12) elevates said upper end of scrap chute (07) about a hinge member (09) up to an angle of 30 to 38 degree to enable the scrap to shade away from the die with gravity.

10. An improved scrap chute with floating lever elevator for die machines as herein described with reference to accompanying drawings.