Hydraulic mould clamp
AssigneeJohns Consolidated Limited
InventorRoy W. Johns
Life of this patent
Estimating the term…
Abstract
A clamp is disclosed which has a clamp block provided with a clamp surface for engaging a mould, die or the like. The clamp has a wedging member engageable with the clamp block and a rod receivable in a bore in the block. The rod is normally biased out of the bore so that a piston and cylinder assembly can be actuated so that the piston moves the rod and wedging member and also the clamp block to a position adjacent the mould, die or the like, whereupon continued movement of the piston forces the rod into the bore and the wedge member under the clamp block to pivot the clamp block into clamping engagement with the mould, die or the like.
Claims13
A clamp comprising a clamping member provided with a clamping surface for engaging a portion of a workpiece, means for locating the clamping member so that the clamping surface is adjacent the workpiece, means for pivoting the clamping member to clamp the clamping member against the workpiece wherein said pivoting means comprises a wedging member which is engageable with the clamping member to pivot the clamping member into clamping engagement with the workpiece wherein said locating means moves said clamping member to a position adjacent the workpiece and said pivoting means is moveable relative to said clamping member when the clamping member is adjacent the workpiece said pivoting means forming part of the locating means so that the relative movement between the locating means and the clamping member causes the pivoting means to engage the clamping member and pivot the clamping member into engagement with the workpiece;
- and wherein said pivoting means further comprises a wedging member, and biasing means disposed between the clamping member and the wedging member for maintaining a constant distance between the wedging member and clamping member until the clamping member ceases to move whereupon continued movement of the locating means causes said wedging member to move relative to the clamping member against the bias of said biasing means so that a wedging surface on the wedging member engages the clamping member to pivot the clamping member to clamp against the workpiece.
A clamp having a clamping block provided with a clamping surface for engaging a workpiece, said clamp having a locating means, said locating means being coupled to a wedging member and to a rod received in a bore in said clamping block, said rod being biased by biasing means against movement into said bore, and said clamping block having a surface engageable by said wedging member, such that said locating means moves said rod to in turn move said clamping block and wedging member until said clamping block stops adjacent said workpiece and whereupon continued movement of said locating means causes said rod to move into said bore against the bias of said biasing means so that the wedging member moves relative to the clamping block to pivot the clamping block so that the clamping block clampingly engages the workpiece.
Dependencies are inferred from the claim text.