Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
180 words
Apparatus for stripping an article from an axially reciprocal punch, of a kind having a plurality of segments surrounding the punch, each of said segments having a working surface resiliently urged radially inwards towards the punch and having a portion of each segment engagable with a respective piston, each piston being supported by fluid means for limited motion in a piston plate, and disposed parallel to the axis of the punch, to enable said working surface of each segment to contact the edge of an article before stripping, wherein the improvement resides in a fixed guide means having a portion defining a socket to confine a pivot portion of each segment for pivotal movement in a plane radial to the punch, individual biasing means positioned within said socket portion and engaging said pivot portion to resiliently urge each respective segment substantially longitudinally towards the punch, and a cam ring having a surface which engages with a heel portion of each segment to guide said working surface thereof substantially parallel to the punch to engage with the article to be stripped.
Claim 2
Dependent Claim
180 words
Apparatus for stripping an article from an axially reciprocal punch, of a kind having a plurality of segments surrounding the punch, each of said segments having a working surface resiliently urged radially inwards towards the punch and having a portion of each segment engagable with a respective piston, each piston being supported by fluid means for limited motion in a piston plate, and disposed parallel to the axis of the punch, to enable said working surface of each segment to contact the edge of an article before stripping, wherein the improvement resides in a fixed guide means having a portion defining a socket to confine a pivot portion of each segment for pivotal movement in a plane radial to the punch, individual biasing means positioned within said socket portion and engaging said pivot portion to resiliently urge each respective segment substantially longitudinally towards the punch, and a cam ring having a surface which engages with a heel portion of each segment to guide said working surface thereof substantially parallel to the punch to engage with the article to be stripped.
Claim 3
Dependent Claim
75 words
Apparatus according to claim 1 wherein a plurality of return springs each is positioned within an extension of said fixed guide means to resiliently act upon a respective segment to permit said segment to pivot during the forward stroke of the punch thus allowing passage of an article and urging engagement of said segment working surface with the article to facilitate stripping of the article from the punch during the return stroke of the punch.
Claim 4
Dependent Claim
48 words
Apparatus according to claim 1 wherein said cam ring surface is that generated by rotation of an arc of a circle about the axis of the punch, the radius of said circle being equal to the distance from the tip of the working surface to the pivot centre.
Claim 5
Dependent Claim
12 words
Apparatus according to claim 1 wherein said cam ring surface is frustoconical.
Claim 6
Dependent Claim
20 words
Apparatus according to claim 1 wherein said cam ring has a cylindrical portion extending forward from said cam ring surface.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 1 wherein a spacer block, extending axially forward from said piston late separates each segment from the next.
Claim 8
Dependent Claim
40 words
Apparatus according to claim 6 wherein each spacer block has a pair of opposing sides each extending parallel to a radius extending from the axis of the punch, and each side is engaged with a side of an adjacent segment.
Claim 9
Dependent Claim
16 words
Apparatus according to claim 1 wherein the fluid means supporting the pistons is a hydraulic fluid.
Claim 10
Dependent Claim
34 words
Apparatus according to claim 1 wherein a valve supplies the fluid means to apparatus from the lubricating system of the punch during the forward stroke of the punch and said valve closes during stripping.