Automated dimpling apparatus

• US 5,673,585 A
• Filed: 07/14/1995
• Issued: 10/07/1997
• Est. Priority Date: 04/26/1995
• Status: Expired due to Fees

• Current Assignee: Bob Bishop
• Original Assignee: Bob Bishop
• Inventors: Bishop, Bob
• Primary Examiner(s): Jones, David
• Assistant Examiner(s): PARADISO, JOHN ROGER
• Application Number:
  US08/502,645
• Time in Patent Office: 816 Days
• Field of Search: 72/446, 72/447, 72/448, 72/404, 72/418, 72/420, 72/394, 72/350, 72/347
• US Class Current: 72/447
• CPC Class Codes: B21D 22/04 for dimpling combined with perforating B21D28/24
• CPC Class Codes: B21D 28/265 with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template

Abstract

An apparatus is disclosed having one or more punching or stamping tools and a corresponding number of support tools for mating with each punching or stamping tool. The apparatus is adapted to form dimples, impressions, cuts, apertures or otherwise similarly modify the surface of a sheet metal blank, and in which the punching and support tools are both movably provided along a supporting structure formed from two elongated and parallel spaced beam members. Each beam member supports one of the punching tool, or stamping tool, and the support tool in a spaced relationship whereby the tools may be aligned and activated in punching or stamping operation to punch or stamp a portion of a blank positioned therebetween. A conveyer is provided to move the blank between the tools so that the portion of the blank to be modified is moved to a position intersecting the path of movement of the punching or stamping tool and the supporting tool. The advancement of the blank on the conveyor and/or the movement of the punching or stamping tool and the support tool along the supporting structure is controlled so that dimples, apertures, and the like may be formed at any desired portion of the blank.

Claims

1. An apparatus for modifying the surface of a sheet blank, the apparatus comprising,

dimple stamping means for stamping a dimple in a portion of said blank, said dimple stamping means including a stamping tool, and a support tool for mating with said stamping tool and engaging and supporting said portion of said blank during stamping,

support means for supporting said dimple stamping means comprising a pair first and second parallel spaced elongate members,

said stamping tool slidably mounted on said first elongate member and including a stamping die, first tool drive means activatable to selectively move said stamping tool along said first elongate member and first die drive means,

said support tool slidably mounted on said second elongate member and including a support die, second tool drive means activatable to move said support tool along said second elongate member to a position wherein said support die is axially aligned with said stamping die to support said portion of said blank during stamping operation, and second die drive means,

conveyor means for conveying said blank in a first direction between said first and second elongate members, said conveyor means maintaining said blank in an orientation permitting substantially unhindered movement of said stamping tool and said support tool thereacross during punching or stamping operation,

said first die drive means being activatable to advance said stamping die in an axial direction normal to said first direction into contact with said blank,

said second die drive means being activatable to retract said support die in said axial direction away from said blank to a position spaced from said dimple, and

said conveyor means for moving said blank in said first direction to a position wherein said first and second tool drive means are movable along the respective first and second elongate members into axial alignment with the portion of the blank to be stamped.

2. An apparatus as claimed in claim 1 wherein said stamping tool and said support tool are movable along said respective first and second elongate members in a second direction transverse to said first direction.

3. An apparatus as claimed in claim 1 wherein said conveyor means comprises a magnetic conveyor.

4. An apparatus as claimed in claim 1 wherein said conveyor means operates to convey said blank in said first direction in response to a conveyor signal,

said apparatus further including computer processing means connected to said conveyor means for supplying said conveyor signal to control the movement of said blank between said first and second elongate members.

5. An apparatus as claimed in claim 4 wherein said stamping tool and said support tool are movable along said respective first and second elongate members in response to associated drive signals,

said computer processing means being further connected to said first and second drive means and supplying said drive signals to control movement of said stamping tool and said support tool along said respective first and second elongate members.

6. An apparatus as claimed in claim 5 wherein said first and second elongate members are positioned in a generally horizontal orientation, said stamping die being axially aligned under a medial portion of said first elongate member, and

said support die being axially aligned above a medial portion of said second elongate member.

7. An apparatus as claimed in claim 1 wherein said first die drive means comprises a hydraulic drive mechanism including a telescopingly movable drive shaft movable in a forward, axial direction towards said blank,

said stamping die being located at a forwardmost end portion of said drive shaft.

8. An apparatus as claimed in claim 1 wherein said first and second elongate members are positioned in a horizontal orientation, said stamping die being axially aligned under a medial portion of said first elongate member, and

said support die being axially aligned above a medial portion of said second elongate member.

9. The use of the apparatus of claim 1 by the steps of:

activating said conveyor means to convey said blank in said first direction to a first position wherein said portion of said blank to be modified is moved between said first and second elongate members,

activating said first and second tool drive means to move said respective stamping die and said support die along said respective first and second elongate members to a position axially aligned with said portion of said blank to be punched or stamped,

with said stamping die and said support die axially aligned with said portion of said blank, activating said first die drive means to advance said stamping die into contact with said portion of said blank to form said dimple, and keeping the blank in a substantially fixed position while retracting the support die to said position spaced from said dimple.

10. The use of the apparatus of claim 5 by the steps of:

outputting a first drive signal from said computer processing means to said conveyor means to initialize said conveyor means and move said blank in said first direction to a first position wherein said portion of said blank to be stamped is substantially moved in between said first and second elongate members,

outputting second drive signals from said computer processing means to each of said first and second tool drive means to initialize said respective tool drive means and move said stamping tool and said support tool along said first and second elongate members to a position where said stamping die and said support die are axially aligned with said portion of said blank to be stamped,

with said punching and stamping die and said support die aligned with said portion of said blank, activating said first die drive means to advance said stamping die into contact with said portion of said blank to form said dimple, and

keeping the blank in a substantially fixed position while retracting the support die to a position spaced from said dimple.

11. A dimpling apparatus for modifying the surface of a tailored blank, the apparatus comprising,

press means for dimpling first and second portions of a blank to be modified, said press means including first and second stamping tools and first and second support tools for mating with said first and second stamping tools respectively,

supporting means for supporting said press means comprising a pair of first and second horizontal parallel spaced elongate members,

magnetic conveyor means for conveying said blank in indexed movement in a first direction between said first and second elongate members, said magnetic conveyor means maintaining said blank in an orientation permitting substantially unhindered movement of said first and second stamping tools and said first and second support tools thereacross during stamping operation,

said first stamping tool for dimpling said first portion of said blank and being slidably mounted on said first elongate member, said first stamping tool including a first stamping die and a first stamping tool drive means activatable to selectively move said first stamping tool along a first section of said first elongate member,

said second stamping tool for dimpling said second portion of said blank and being slidably mounted on said first elongate member, said second stamping tool including a second stamping die and a second stamping tool drive means activatable to selectively move said second stamping tool along a second section of said first elongate member,

said first support tool slidingly mounted on said second elongate member and including a first support die and a first support drive means activatable to selectively move said first support tool along a first section of said second elongate member, said first section of said second elongate member being substantially coterminous with said first section of said first elongate member wherein said first support die is movable to a position axially aligned with said first stamping die to support said first portion of said blank during stamping operation,

said magnetic conveyor moving said blank in said first direction to a position wherein said first stamping tool and said first support tool are movable along said respective first sections of said first and second elongate members into alignment with said first portion of said blank,

said second support tool slidably mounted on said second elongate member and including a second support die and a second support drive means activatable to selectively move said second support tool along a second section of said second elongate member, said second section of said second elongate member being substantially coterminous with said second section of said first elongate member wherein said second support die is movable to a position axially aligned with said second stamping die to support said second portion of said blank during stamping operation,

said first stamping tool including first stamping die drive means activatable to advance said first stamping die in a first vertical direction into contact with said first portion of said blank,

said second stamping tool including second stamping die drive means activatable to advance said second stamping die in a vertical direction into contact with said second portion of said blank, and

wherein said first support tool further includes first support die drive means activatable to retract said first support die in a vertical direction to a position spaced from said first portion of said blank, and second support tool includes second support die drive means activatable to retract said second support die in a vertical direction to a position spaced from said second portion of said blank.

12. A dimpling apparatus as claimed in claim 11 wherein said first and second sections of said first elongate member overlap.

13. A dimpling apparatus as claimed in claim 11 wherein said first and second stamping tools are configured for simultaneous stamping operation.

14. A dimpling apparatus as claimed in claim 11 wherein said first and second stamping tools are configured for independent stamping operation.

15. A dimpling apparatus as claimed in claim 11 wherein said magnetic conveyor means conveys said blank in said first direction in response to a conveyor signal, said dimpling apparatus further including computer processing means electronically connected to said conveyor means for supplying said conveyor signal to control said indexed movement of said blank between said first and second elongate members.

16. A dimpling apparatus as claimed in claim 11 wherein said first stamping tool is movable along said first section of said first elongate member in response to a first stamping tool signal, and said second stamping tool is movable along said second section of said first elongate member in response to a second stamping tool signal,

said dimpling apparatus further including computer processing means electronically connected to said first and second stamping tools for supplying said respective first and second stamping tool signals to control movement of said first and second stamping tools along said first and second elongate members.