초록 ▼

A blind-riveting tool for setting pull-type rivet assemblies of the kind which has a pulling head on the mandrel comprises abutment member and mandrel-pulling means each with a collet, the latter inside the former, resiliently urged open to admit a mandrel and arranged to be closed by advance of an

A blind-riveting tool for setting pull-type rivet assemblies of the kind which has a pulling head on the mandrel comprises abutment member and mandrel-pulling means each with a collet, the latter inside the former, resiliently urged open to admit a mandrel and arranged to be closed by advance of an actuating sleeve on the collet of the abutment member. The abutment member and mandrel-pulling means as a whole are slidable to and from, under air pressure, both having pistons, one behind the other, in a common cylinder, and are separable to effect a rivet-setting stroke by admission of hydraulic fluid between the pistons. Means is provided for delivering a fresh rivet assembly axially into the collets of the abutment member and mandrel-pulling means when they are open in their retracted positions. The tool provides for the rapid and reliable insertion and setting of automatically fed rivet assemblies of the kind referred to, while being easy for the user to operate.

대표청구항 ▼

A blind-riveting tool comprising a housing, an abutment member having a rivet-engaging face at its forward end to engage the head of a rivet in a rivet-setting operation, and means reciprocable within the housing to pull the mandrel stem relative to the abutment member in the rivet-setting operation

A blind-riveting tool comprising a housing, an abutment member having a rivet-engaging face at its forward end to engage the head of a rivet in a rivet-setting operation, and means reciprocable within the housing to pull the mandrel stem relative to the abutment member in the rivet-setting operation, the abutment member and mandrel-pulling means each comprising a plurality of rivet-assembly-engaging parts disposed about a common axis along which the mandrel will be pulled, which parts can be opened and closed relative to said axis to allow in their open condition the introduction therebetween of a mandrel with a pulling head, and in their closed condition the abutment member to engage the rivet head and the pulling means to engage the mandrel under its pulling head, said parts of the abutment member and pulling means being resiliently urged towards their open condition and arranged to be closed by the advance of a surrounding annular actuating element over said parts of the abutment member characterized in that said actuating element is mounted in said housing for reciprocation along said common axis behind a forwardly extending sleeve portion of said housing, the abutment member and mandrel-pulling means being also reciprocable along said axis between a rearward position behind said sleeve portion where they can be opened and closed and a forward position in which the rivet-engaging face of the abutment member is exposed for presentation of a rivet to a workpiece.