US 12,330,328 B2
Die block, steel-rule die assembly comprising the same, and method thereof
Paolo Quercia, Pierrefonds (CA)
Assigned to Diebec Matrices LTEE, (CA)
Filed by DIEBEC MATRICES LTEE, Pointe-Claire (CA)
Filed on Dec. 5, 2023, as Appl. No. 18/529,139.
Application 18/529,139 is a continuation of application No. 17/816,518, filed on Aug. 1, 2022, granted, now 11,833,705.
Application 17/816,518 is a continuation of application No. 16/490,687, granted, now 11,400,615, issued on Aug. 2, 2022, previously published as PCT/CA2018/050238, filed on Mar. 1, 2018.
Claims priority of provisional application 62/465,401, filed on Mar. 1, 2017.
Prior Publication US 2024/0359353 A1, Oct. 31, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B26D 7/26 (2006.01); B26F 1/40 (2006.01); B26F 1/44 (2006.01)
CPC B26D 7/2614 (2013.01) [B26F 1/40 (2013.01); B26F 1/44 (2013.01); B26D 2007/2607 (2013.01); B26F 2001/4445 (2013.01); B26F 2001/4463 (2013.01); Y10T 83/9459 (2015.04); Y10T 83/9476 (2015.04)] 20 Claims
OG exemplary drawing
 
1. A die block for die cutting, the die block comprising:
a top surface;
an opposite bottom surface;
a main body extending between the opposite top and bottom surfaces;
at least one kerf extending down within the main body and being provided about the top surface via a corresponding top groove, the at least one kerf and corresponding top groove being positioned, shaped and sized for receiving a corresponding die cutting rule; and
at least one magnetic element having an elongated body with a given cross-sectional profile and a corresponding length, the length of the elongated body being greater than a maximal span within the cross-sectional profile taken along an imaginary median plane of the at least one magnetic element, and the at least one magnetic element being positioned, shaped and sized about the main body of the die block and in proximity of the at least one kerf for providing a magnetic field intended to retain the corresponding die cutting rule when placed into the at least one kerf;
wherein the cross-sectional profile of the at least one magnetic element is either symmetrical or asymmetrical along a first imaginary median plane of the cross-sectional profile, and wherein the cross-sectional profile of the at least one magnetic element is further symmetrical or asymmetrical along a second imaginary median plane of the cross-sectional profile;
wherein the cross-sectional profile of the at least one magnetic element comprises first and second distal sides;
wherein the cross-sectional profile of the at least one magnetic element comprises front and rear longitudinal sides, with the front longitudinal side of the at least one magnetic element being shorter or no longer than the rear longitudinal side thereof; and
wherein the cross-sectional profile of the at least one magnetic element is provided with peripheral corners between adjacent sides;
wherein the opposite top and bottom surfaces of the die block are substantially horizontal top and bottom surfaces;
wherein the at least one magnetic element includes at least one operative surface facing the at least one kerf;
wherein the at least one operative surface of the at least one magnetic element is a substantially open surface;
wherein the at least one operative surface of the at least one magnetic element is substantially facing the at least one kerf;
wherein the at least one operative surface of the at least one magnetic element is substantially aligned with the at least one kerf;
wherein a gap distance is provided between the at least one operative surface of the at least one magnetic element and a side surface of the corresponding die cutting rule when placed into the at least one kerf;
wherein a gap distance is provided between the at least one operative surface of the at least one magnetic element and a corresponding wall of the at least one kerf;
wherein the at least one magnetic element includes a plurality of magnetic elements provided along a length of the at least one kerf;
wherein the at least one magnetic element includes at least one magnet; and
wherein the at least one magnet is lodged into a corresponding recess of the main body of the die block;
wherein the corresponding recess has a geometrical profile complementary to that of the at least one magnet, including a corresponding complementary cross-sectional shape;
wherein the cross-sectional shape of the corresponding recess is either symmetrical or asymmetrical along a first imaginary median plane of the cross-sectional shape, and wherein the cross-sectional shape of the corresponding recess is further symmetrical or asymmetrical along a second imaginary median plane of the cross-sectional shape;
wherein the cross-sectional shape of the corresponding recess comprises first and second distal sides;
wherein the cross-sectional shape of the corresponding recess comprises front and rear longitudinal sides, with the front longitudinal side of the corresponding recess being shorter or no longer than the rear longitudinal side thereof; and
wherein the cross-sectional shape of the corresponding recess is positioned, shaped and sized to prevent frontward egress of the at least one magnet, out from the corresponding recess, via an abutment of corresponding sides of the at least one magnet cooperating with corresponding sides of the corresponding recess.