US3252315A

US3252315A - Apparatus for manufacturing wheel covers

Info

Publication number: US3252315A
Application number: US183962A
Authority: US
Inventors: Walter W Muench
Original assignee: Lyon Inc
Current assignee: Lyon Inc
Priority date: 1962-03-30
Filing date: 1962-03-30
Publication date: 1966-05-24
Anticipated expiration: 1983-05-24

Description

May 24, 1966 W. w. MUENCH APPARATUS FOR MANUFACTURING WHEEL COVERS Filed March 30, 1962 5 Sheets-Sheet l INVENTOR. WALTER W. MUENCH OLSEN AND g g wg usou May 24, 1966 w. w. MUENCH I 3,252315 APPARATUS FOR MANUFACTURING WHEEL COVERS 5 Sheets-Sheet 2 Filed March 30, 1962 E -T- %.E

INVENTOR. WALTER w. MUENCH v fi-Q- BY 48 OLSEN m gg ggusou May 24, 1966 w. w. MUENCH 3,252,315

APPARATUS FOR MANUFACTURING WHEEL COVERS Filed March 30. 1962 5 Sheets-Sheet 5 Ema-.3

I NVENTOR.

WALTER W. MUENCH v F BY 48 5O OLSEN AND gazlug rqsor United States Patent 3,252,315 APPARATUS FOR MANUFACTURING WHEEL COVERS Walter W. Muench, Adrian, Mich, assignor, by mesne assignments, to Lyon Incorporated, Detroit, Micln, a corporation of Delaware Filed Mar. 30, 1962, Ser. No. 183,962 7 Claims. (Cl. 72-328) This invention relates generally to wheel covers and more particularly to an improved apparatus for manufacturing wheel covers.

In the manufacture of a wheel cover having dished or grooved external surfaces, a sheet metal blank is positioned between spaced upper and lower die assemblies, following which the dies are moved toward each other in a press so as to deform and shape the blank therebetween. In some wheel covers, a deep groove is desirable in the portion of the cover adjacent and peripheral edge of the cover. In the event this groove is of a depth such that it extends to a depth below the peripheral edge of the cover, special problems are encountered in the manufacture of the cover. More specifically, during the shaping of the blank to form the cover, a peripheral edge portion of the blank is gripped in the die assembly so as to form a draw head in the peripheral edge portion of the cover. In the event the groove adjacent the draw head is ofa depth such that it extends below the draw head, the upper die must be of a shape such that an annular groove forming projection on the upper die assembly will extend below the draw head when the cover has been fully formed. However, in the event the annular projection in the upper die assembly which forms the deep groove extends below the portion of the upper die assembly which forms the draw bead, the annular projection will engage the sheet metal blank prior to engagement of the blank by the draw bead forming portion of the upper die assembly. It has been found that when the blank is first engaged inwardly of the draw bead, the blank will wrinkle to an extent such that an acceptable wheel cover cannot be formed.

Consequently, it is necessary to provide the upper die assembly with an annular section which'is movable downwardly a distance sufficient to form the desired deep groove in the wheel cover, but which is maintained in a retracted position relative to the draw bead forming portion of the upper die assembly until the sheet metal blank has been securely gripped by the draw bead forming portions of the upper and lower die assemblies. Presses can be constructed so that they will provide for a relative movement of different sections of an upper die assembly. However, presses of this type are more expensive than a press of a type which merely provides for relative vertical movement of the upper and lower die assemblies. It is an object of this invention, therefore, to provide an improved apparatus forming a wheel cover with the desired deep groove wihch can be used with a simple press of the type described above.

A further object of this invention is to provide a die assembly in which the upper die assembly includes an annular section wich is movable downwardly by a hydraulically actuated mechanism which operates in response to movement of the upper and lower die assemblies toward each other, following engagement of the blank by the draw bead forming portions of the die assemblies, so as to move the annular section downwardly to a groove forming position.

A further object of this invention is to provide a hydraulic die actuating assembly which is readily incorporated in a wheel cover forming die assembly.

Further objects, features and advantages of this inven- Patented May 24, 1966 tion will become apparent from a consideration of the following description, the appended claims, and the accompanying drawings in which:

FIGURE 1 is a vertical sectional view of the apparatus of this invention, showing the hydraulic actuating apparatus in diametric form in assembly therewith, and showing the upper die assembly in a raised position relative to the lower die assembly;

FIGURE 2 is a vertical sectional view, illustrated similarly to FIG. 1, showing the upper die assembly moved downwardly relative to the lower die assembly a distance suificient to grip a sheet metal blank positioned therebetween; and

FIGURE 3 is a vertical sectional view, illustrated similarly to FIGS. 1 and 2, showing the upper die assembly in its final downwardly moved blank forming position.

With reference to the drawing, the die apparatus of this invention, indicated generally at 10, is shown in FIGS. 1, 2 and 3 as including a lower die assembly 12 and an upper die assembly 14 wich is movable from an upper position spaced above the lower die assembly (FIG. 1) to a lower position in which it has its lower end nested within the lower die assembly (FIG. 3). In FIG. 1, a sheet metal blank 16 is shown supported on the lower die assembly 12. The blank 16 forms a part of a roll of sheet metal which is continuously fed between the lower and upper die assemblies and a section of which is cut off each time the upper die assembly 14 is moved to its FIG. 3 position in which the blank 16 is in the shape desired for a wheel cover.

The lower die assembly 12 is supported on a base member 18 whichalso supports a body member or shoe 20 which has an opening 22 extended therethrough. The lower die assembly 12 is supported on the base 18 and is positioned in the opening 22. A stationary ring shape cutter member 24 is secured by bolts 26 to the top side of the body member 20 at a position extending about and slightly above the lower die assembly 12. An annular draw bead forming or blank margin clamping section 28 of the lower die assembly 12 is supported on a plurality of pins 30, only two of which are shown, which extend through the base 18 ind are supported at their lower ends on a ring 32. A plurality of hydraulic cylinder assemblies 34, only two of which are shown, have piston rods 36 which support the ring 32. In each assembly 34, the piston rod 36 is secured to the top side of a piston 38 which is slidably supported in a cylinder 40. Fluid is supplied to the cylinders 40, on the bottom sides of the pistons 38, through a passage 42 in a mounting plate 44 for the assemblies 34. The passage 43 communicates through a line 46 with a tank 48, and a valve 50 is positioned in the line 46.

The fluid pressure in the cylinders 40 is suificient to move the ring 32 to its upper position in which it moves the pins 30 to upper limit positions in which an annular shoulder 52 on the lower die section 28 engages the lower end 54 of the cutter member 24. In this position of the die section 28, the sheet metal blank 16, which is some' what wider than the diameter of the die section 28 is supportable on the die section 28 and projects outwardly iOIltO the top end of the cutter member 24.

The lower die assembly 12 also includes an inner sec tion 56 which is disposed radially inwardly of the draw bead forming section 28. The section 56 consists of a central member 58, two intermediate members 60 and'62, all of which are secured to the base 18 by bolts 64, and a smaller member 66 which is secured by bolts 68 to the section 62. The inner section 56 of the lower die assembly 12 is formed on its upper surface to the desired final shape of the wheel cover which is to be formed in the apparatus 10. Accordingly, the inner section 56 has a 3 central cavity 68 which is surrounded by

grooves

70 and 72. As shown in FIG. 3, when the blank 16 is formed to (its final shape, the groove 72 in the lower die assembly 12 is of a depth such that it extends below the upper end of the draw bead forming section 28, which is formed with a groove 74 shaped to form a draw bead 76 in the blank 16.

The upper die assembly 14 includes an outer draw bead forming or blank margin clamping section 78 which has an annular projection 80 on its lower end vertically aligned with and shaped to nest in the groove 74 in the lower draw bead forming section 28. The outer edge 82 of the upper die section 78 v is of a size to telescope within the cutter member 24 so that on downward movement of the upper die section 78 the edge 82 cooperates with the edge 85 of the cutter member 24 to cut a circular piece of metal from the blank 16. The upper die section 78 is secured by bolts 84 to a supporting ring 86 which is secured by bolts 88 to an upper plate 90. The plate 90 is in turn secured by a ring 92 to a plate 94 which is secured to a block 96 which in turn is mounted on the vertically movable portion of a press on which the mounting plate 44 on the base 18 is supported in a fixed position.

The upper die assembly 14 also includes an inner section 98 which consists of a central die member 100 and a ring 102 which surrounds the member 100. Both the members 100 and 102 are secured to the plate 90 by bolts 104. Positioned between the inner section 98 of the upper die assembly 14 and the outer section 78 is an intermediate upper-die member 106 which is of ring shape and which has its lower end 108 shaped to nest in the groove 72 in the lower die assembly 12. As will be more fully explained hereinafter, the intermediate annular die section or member 106 is movable vertically relative to the outer die section 78 and the inner die section 98 both of which are fixed on the vertically movable plate 90.

The die member 106 is secured, by bolts 110 and spacer sleeves 112 to an actuating plate 114 which is disposed in a space 116 within the ring 92 and between the supporting plate 90 and the plate 94. A plurality of springs 118, only two of which are shown, are positioned in cavities 120 in the top side of the supporting plate 90 and engage the bottom side of the actuating plate 114 so as to continuously urge the actuating plate 114 in an upward direction to thereby urge the die member 106 upwardly toward its upper position shown in FIG. 1.

, Fluid motor means comprising a plurality of hydraulic cylinder assemblies 122 are mounted on the plate 94 so that they project downwardly toward the actuating plate 114. Each assembly 122 includes a cylinder 124 mounted in a fixed position on the plate 94, a piston 126 which is mounted for reciprocal movement in the cylinder 124, and a downwardly projecting piston rod 128 which engages the top side of the actuating plate 114. The lower ends of the cylinders 124 are closed by a plate 130 which has openings 132 therein of a size such that the piston rods 128 can extend downwardly therethrough. A spring 134 is mounted in each of the cylinders 124 at a position surrounding the piston rod 128 so that it extends between the top side of the plate 130 and the bottom side :of the piston 126. The upper end of each of the cylinders 124 is formed with a fluid passage 136 which communicates with a passage 138 in the block 96. The passage 138 is connected to one end of a conduit 140, the opposite end of which is connected to a hydraulic cylinder assembly 142. Intermediate its ends the conduit 140 is connected to a conduit 144 which has a pressure control valve 146 disposed therein. The conduit 144 is connected to a fluid reservoir 148 which has fluid 150 under pressure therein.

The hydraulic cylinder assembly 142 includes a cylinder 152 which is mounted on a bracket 154 secured to the plate 90. A piston 156 is slidably mounted in the cylinder 152 for up and down reciprocal movement and carries a downwardly extending piston rod 158 which is vertically aligned with an actuating pin 160 mounted :on the top side of the shoe 20. During downward movement of the upper die assembly 14 toward the lower die assembly 12, the piston rod 158 engages the pin 160 and the piston 156 is moved upwardly in the cylinder 152 so as to force fluid through the conduit and the passage 138 into the cylinder assemblies 122 so as to move the piston rods 128 downwardly to in turn move the actuating plate 114 and the die member 106 downwardly.

In the operation of the apparatus 10, assume that the lower and

upper die assemblies

12 and 14, respectively, are in the positions shown in FIG. 1 and that the sheet metal blank 16 is supported on the upper end of the draw bead forming section 28 of the lower die assembly 12. The press in which the apparatus 10 is mounted is operated to move the upper die assembly 14 downwardly toward the lower die assembly 12. During such movement, the upper die assembly 14 is guided by upright guide pins 162 on the lower shoe 20 which telescope into bushings 164 carried by the plate 90. Only one pin 162 and bushing 164 are illustrated, but it is to be understood that a plurality of these members are utilized.

When the upper die assembly 14 has been moved downwardly to a position in which the upper draw bead forming die section 78 engages the blank 16 and forms the draw bead 76 therein, the parts of the apparatus 10 are in the positions illustrated in FIG. 2. As shown in FIG. 2, the piston rod 158 is spaced above the pin so that at this time no fluid has been pumped from the cylinder assembly 142 into the cylinder assemblies 122 so as to move the die member 106 downwardly from its upper position shownin FIGS. 1 and 2. Consequently, at this time, the die member 106 is in a position in which the lower end thereof is positioned above the lower end of the draw bead forming die section 78. The sheet metal blank 16 is thus securely gripped between the

die sections

28 and 78 of the blank by the die member 106.

During subsequent downward movement of the upper' of waste metal 172 remains on the cutter member 24.v

Fluid is forced out of the cylinders 40 through the passage 42 and the conduit 46 into the reservoir 48 with the pressure valve 50 functioning to maintain a predetermined pressure in the cylinders 40. Also, during further downward movement of the upper die assembly 14, the piston rod 158 engages the pin 160 so as to move the piston 156 upwardly in the cylinder 152 to thereby force fluid out of the cylinder 152 into the upper ends of the cylinder assemblies 122. This fluid moves the pistons 126 downwardly so as to move the piston rods 128 downwardly to in turn move the die member 106 downwardly to the position shown in FIG. 3 in which the lower end of the die member 106 projects below the lower end of the die section 78. It is not critical when this relative movement of the die member 106 and the die sections 78 and 98 occurs so long as it follows the engagement of the die section 78 with the blank 16 so as to securely grip the blank at its periphery.

In its lower position (FIG. 3), the lower edge of the die member 106 nests within the groove 72 so as to form the blank 16 with a deep groove which is located adjacent the draw bead 76. Any fluid which is forced out of'the cylinder 152 which is in excess of that necessary to move the hydraulic cylinder assemblies 122 downwardly to the positions shown in FIG. 3 flows through the conduit 144 and the valve 146 into the reservoir 150. In this connection, it is to be understood that while a single cylinder assembly 142 has been illustrated for actuating the cylinder assemblies 122, a plurality may be provided if desired. The lower draw bead forming die section 28 has been moved downwardly to the stop position shown in FIG. 3 in which it engages the base 18 and the blank 16 has been shaped to its final desired form. The press is then actuated to lift the supporting plate 90 to its position shown in FIG. 1. As soon as the upper bead forming die section 78 is moved upwardly the pressure of the fluid in the reservoir 48 provides for an upward movement of the pistons 38 so as to raise the die section 28 to its upper position shown in FIG. 1 in which the shoulder 52 on the die section 28 engages the lower end 54 of the cutter member 24. The shaped blank 16 is removed from the apparatus and another blank 16 is fed into the position shown in FIG. 1. As soon as the piston rod 158 commences its upward movement relative to the pin 160, the fluid pressure in the cylinders 124 drops so that the forces exerted on the lower ends of the piston rods 128 by the spring 120 is suflicient to raise the pistons 126 upwardly in the cylinders 124 to thereby raise the die member 106 to its upper position shown in FIG. 1 so that the apparatus 10 is in position for forming the next blank 16 to the shape shown in FIG. 3.

From the above description it is seen that this invention provides a method and apparatus whereby a deep groove 170 can be formed in the blank 16 which is ad jacent to and extends below the draw head 76. The deep groove 170 is obtained without a requirement for a complex press. By virtue of the mounting of the upper die member 106 so that it is movable relative to the adjacent upper die sections between the upper and lower positions shown in FIGS. 1 and 3, respectively, and is fluid actuated so that it is moved downwardly following gripping of the blank between the

die sections

28 and 78, the blank '16 can be formed without wrinkling.

It will be understood that the apparatus for manufacturing wheel covers which is herein disclosed and described is presented for purposes of explanation and illustration and is not intended to indicate limits of the invention, the scope of which is defined by the following claims.

What is claimed is:

1. In apparatus for shaping circular wheel covers from a sheet metal blank, a lower die assembly having an inner circular metal shaping portion and an annular blank margin clamping portion extending about said circular portion, yieldable means urging said clamping portion upwardly, an upper die assembly mounted for reciprocal operable movement into and out of metal shaping coaction with the lower die assembly, said upper die assemouter portion fixed to said supporting member spaced radially outwardly of said inner portion and clampingly engageablewith said lower die blank margin clamping portion to clamp the margin of a sheet metal blank therebetween, an annular die member movably mounted in said upper die assembly at a position between said upper die inner and outer portions for movement relative to said supporting member between an upper position in which said die member has its lower end above said upper die outer portion and a lower position in which said die member projects below said upper die outer portion, means maintaining said die member in its upper position during downward movement of said upper die assembly to a position of said outer upper die portion adjacent said blank margin clamping portion for clamping a blank therebetween, and means responsive to further downward movement of said upper die assembly operable to move said die member downwardly relative to said supporting member and said upper die inner and outer portions to the lower position of said die member.

2. In apparatus for shaping circular wheel covers from a sheet metal blank, a lower die assembly having an inner circular metal shaping portion provided with an annular groove adjacent the periphery thereof and an annular blank margin clamping portion extending about said circular portion and movable between upper and lower positions, said clamping portion in the upper position thereof projecting substantially above said groove and in the lower position thereof being above the bottom of said groove, yieldable means urging said clamping portion upwardly toward the upper position therefor, an upper die assembly mounted for reciprocal operable movement into and out of metal shaping coaction with the lower die assembly said upper die assembly including a supporting member, a circular inner portion fixed to said supporting member, an annular radially outer portion fixed to said supporting member spaced radially outwardly of said inner portion and clampin'gly engageable with said lower die blank margin clamping portion to clamp the margin of a sheet metal blank therebetween, an annular die member movably mounted in said upper die assembly at a position between said inner portion and said outer portion for movement relative to said supporting member between an upper position in which said die member has its lower end above said outer portion and a lower position in which said die member projects below said outer portion, said die member having the lower end thereof shaped for nesting engagement in said groove, means maintaining said die member in its upper position during movement of said outer upper die portion toward said blank margin clamping portion, and means responsive to further downward movement of said upper dieassembly following clamping engagement of said outer die portion and said blank margin clamping portion operable to move said die member downwardly to the lower position therefor and relative to said supporting member and to said inner and outer portions so that on downward movement of said upper die assembly to a position in 'which said clamping portion is in the lower position therefor said die member is movable to a position nested within said groove for forming a similarly shaped groove in said blank.

3. In apparatus for shaping circular wheel covers from a sheet metal blank, a vertically movable support-ing plate, an upper die assembly including a substantially circular inner section mounted in a fixed position on said plate, an annular radially outer section spaced radially outwardly of said inner section and mounted on said plate in a fixed position substantially coaxial with said inner section, an annular die member movably mounted in said upper die assembly at a position between said inner section and said outer section for movement between an upper position in which said die member has its lower end above the lower end of said outer section and a lower position in which said die member has its lower end projected below the lower end of said outer section, an actuating plate positioned above said supporting plate and secured to said die member, and fluid cylinder assembly means including reciprocally movable downwardly extending piston rod means engaged with said actuating plate and operable on downward movement to move said actuating plate and said die member downwardly to the lower position of said die member.

4. In apparatus for shaping circular wheel covers from a sheet metal blank, a vertically movable supporting plate, an upper die assembly including a substantially circular inner section mounted in a fixed position on said plate, an annular radially outer section spaced radially outwardly of said inner section and mounted on said plate in a fixed position substantially coaxial with said inner section, an annular die member movably mounted in said upper die assembly at a position between said inner section and said outer section for movement between an upper position in which said die member has its lower end above the lower end of said outer section and a lower position in which said die member has its lower end projected below the lower end of said outer section, an actuating plate positioned above said supporting plate and secured to said die member, fluid cylinder assembly means including reciprocally movable downwardly extending piston rod means engaged with said actuating plate and Operable on downward movement to move said actuating plate and said die member downwardly to the lower position of said die member, and spring means engaged with and extending between said plates for moving said actuating plate upwardly to a position in which said die member is in the upper position therefor.

5. In apparatus for shaping circular wheel covers from a sheet metal blank, a vertically movable supporting plate, an upper die assembly including a substantially circular inner section mounted in a fixed position on said plate, an annular radially outer section spaced radially outwardly of said inner section and mounted on said plate in a fixed position substantially coaxial with said inner section, an annular die member movably mounted in said upper die assembly at a position between said inner section and said outer section for movement between an upper position in which said die member has its lower end above the lower end of said outer section and a lower position in which said die member has its lower end projected below the lower end of said outer section, an actuating plate positioned above said supporting plate and secured to said die member, fluid cylinder assembly means including reciprocally movable downwardly extending piston rod means engaged with said actuating plate and operable on downward movement to move said actuating plate and said die member downwardly to the lower position of said die member, spring means engaged with and extending between said plates for moving said actuating plate upwardly to a position in which said die member is in the upper position therefor, and means carried by said supporting plate and fluid connected to said cylinder assembly means and operable in response to downward movement of said supporting plate to supply fluid to said cylinder means so as to move said piston rod means downwardly.

6. In apparatus for shaping circular wheel covers from a sheet metal blank, a circular lower die assembly having a grooved upper surface which includes an annular blank margin clamping portion and an annular groove radially inwardly of and adjacent said clamping portion which extends below the upper surface of said clamping portion in the final blank forming position of said lower die assembly, a vertically movable supporting plate, an upper die assembly mounted for reciprocal operable movement into and out of metal shaping coaction with the lower die assembly, said upper die assembly including a circular inner section mounted in a fixed position on said plate, an an- 8 nula'r radially outer section spaced radially outwardly of said inner section and mounted on said supporting plate in a fixed position substantially coaxial with said inner section, an annular die member movably mounted in said upper die assembly at a position between said inner and outer sections for movement between an upper position in which said die member has its lower end above the lower end of said outer section and a lower position in which said die member lower end projects below the lower end of said section, fluid motor means mounted on said upper die assembly for reciprocal movement therewith and operatively associated with said die member for moving said die member downwardly relative to saidinner and outer die sections to said lower position therefor, means maintaining said die member in its upper position during downward movement of said upper die assembly to a position in which said outer upper .die section and said blank margin clamping portion clamp said blank therebetween, and coacting means secured to said upper and lower die assemblies engageable on further downward movement of said upper die assembly and operable on engagement to pro- .vide for a supply of actuating fluid to said fluidmotor means.

7. The structure of claim 6 in which said ocacting means includes at least one fluid cylinder assembly having a piston and a piston rod and means engageable with said piston rod for moving it in a direction to expel fluid from said assembly, and passage means connecting said cylinder assembly to said fluid motor means.-

References Cited by the Examiner UNITED STATES PATENTS 1,575,300 3/1926 Weeks 18-l9 1,919,287 7/1933 Auble 11349 2,409,254 10/ 1946 Conzelman 11345 2,977,917 4/1961 Lyon 113116 v 2,985,128 5/1961 Henrickson 11349 1 3,001,496 9/1961 Lyon 113116 3,019,752 2/1962 Lyon 11349 3,025,815 3/1962 Lyon 11349 3,064,507 11/1962 Strugala 7842 CHARLES W. LANHAM, Primary Examiner.

NEDWIN BERGER, WILLIAM J. STEPHENSON,

' Examiners.

Claims

1. IN APPARATUS FOR SHAPING CIRCULAR WHEEL COVERS FROM A SHEET METAL BLANK, A LOWER DIE ASSEMBLY HAVING AN INNER CIRCULAR METAL SHAPING PORTION AND AN ANNULAR BLANK MARGIN CLAMPING PORTION EXTENDING ABOUT SAID CIRCULAR PORTION, YIELDABLE MEANS URGING SAID CLAMPING PORTION UPWARDLY, AN UPPER DIE ASSEMBLY MOUNTED FOR RECIPROCAL OPERABLE MOVEMENT INTO AND OUT OF METAL SHAPING COACTION WITH THE LOWER DIE ASSEMBLY, SAID UPPER DIE ASSEMBLY INCLUDING A SUPPORTING MEMBER, A CIRCULAR INNER PORTION FIXED TO SAID SUPPORTING MEMBER, AN ANNULAR RADIALLY OUTER PORTION FIXED TO SAID SUPPORTING MEMBER SPACED RADIALLY OUTWARDLY OF SAID INNER POPRTION AND CLAMPINGLY ENGAGEABLE WITH SAID LOWER DIE BLANK MARGIN CLAMPING PORTION TO CLAMP THE MARGIN OF A SHEET METAL BLANK THEREBETWEEN, AN ANNULAR DIE MEMBER MOVABLY MOUNTED IN SAID UPPER DIE ASSEMBLY AT A POSITION BETWEEN SAID UPPER DIE INNER AND OUTER PORTIONS FOR MOVEMENT RELATIVE TO SAID SUPPORTING MEMBER BETWEEN AN UPPER POSITION IN WHICH SAID DIE MEMBER HAS ITS LOWER END ABOVE SAID UPPER DIE OUTER PORTION AND A LOWER POSITION IN WHICH SAID DIE MEMBER PROJECTS BELOW SAID UPPER DIE OUTER PORTION, MEANS MAINTAINING SAID DIE MEMBER IN ITS UPPER POSITION DURING DOWNWARD MOVEMENT OF SAID UPPER DIE ASSEMBLY TO A POSITION OF SAID OUTER UPPER DIE PORTION ADJACENT SAID BLANK MARGIN CLAMPING PORTION FOR CLAMPING A BLANK THEREBETWEEN, AND MEANS RESPONSIVE TO FURTHER DOWNWARD MOVEMENT OF SAID UPPER DIE ASSEMBLY OPERABLE TO MOVE SAID DIE MEMBER DOWNWARDLY RELATIVE TO SAID SUPPORTING MEMBER AND SAID UPPER DIE INNER AND OUTER PORTIONS TO THE LOWER POSITION OF SAID DIE MEMBER.