A die changing apparatus comprises a first die support for supporting a plurality of dies, the die support having first and second die supporting portions which are spaced from one another. The die support is movable so that either the first die supporting portion or the second die supporting portion are locatable at a first transfer position. There is also provided a transfer arrangement comprising a first grip portion configured to grip a die from one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and thereby remove said gripped die from the first die support. The transfer arrangement is movable, independently of the die support, between a first configuration in which the first grip portion can grip said die from said one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and a second configuration in which the first grip portion can release said die and pass it to a second die support of a rivet setter located at a second transfer position.

A system and method for forming a foundation truss for a box spring or mattress foundation frame includes a first truss rail assembly station having a series of block feeders, a top rail hopper and a filler strip hopper that received stacks of truss components such as blocks, top rails and filler strips and feed such truss components into stacked registration. The stacked truss components are moved into engagement with a series of staplers that secure the filler strips, top rails and blocks together to form first truss rail portions, which are then fed to a second truss rail assembly station where a bottom rail is automatically applied thereto.

Fastener delivery apparatus for automatically selecting and delivering fasteners such as rivets to a setting tool. The fasteners are pre-loaded in a package and dispense via at least one fastener delivery tube that interconnects the setting tool to a fastener feeder device. The fastener feeder device releases selected fasteners from the package into the delivery tube. The fasteners are transportable individually or in groups in the tube from the feeder device to the tool. A transfer station attached to the tool or the delivery tube transfers a fastener from the delivery apparatus into the tool, transfer station is adjacent to the tool so that a delivered fastener may be inserted by the transfer station into the tool and a second position in which it is clear of the tool so as to permit the tool or a portion thereof to move towards a workpiece to insert a smooth, rapid and reliable delivery of fasteners of various sizes and types to the nose of a setting tool in any particular order and provides all the fastener types for any particular work cycle.

The present invention relates to a method for the punching in and attachment of the fastener element to a planar workpiece, in particular to a sheet metal part. During the punching in of the fastener element in the workpiece a movably arranged die plunger of the die button is pressed with a predetermined pressing force against the workpiece. The pressing force is adapted such that the die plunger first moves once a slug has been cut out of the workpiece by a piercing section of the fastener element.

A joining method is a method of joining a plate set composed by a plurality of stacked plate members including a first plate member and a second plate member by using a tapping screw. When the tapping screw is advanced into the plate set while the tapping screw is rotated in a state of applying a pressure onto the plate set so as to form through-holes in the first plate member and the second plate member, a first pressure applied onto the tapping screw is reduced down to a second pressure at the time when the tapping screw penetrates the first plate member.

A system and method for forming a foundation truss for a box spring or mattress foundation frame includes a first truss rail assembly station having a series of block feeders, a top rail hopper and a filler strip hopper that received stacks of truss components such as blocks, top rails and filler strips and feed such truss components into stacked registration. The stacked truss components are moved into engagement with a series of staplers that secure the filler strips, top rails and blocks together to form first truss rail portions, which are then fed to a second truss rail assembly station where a bottom rail is automatically applied thereto.

A system and method for forming a foundation truss for a box spring or mattress foundation frame includes a first truss rail assembly station having a series of block feeders, a top rail hopper and a filler strip hopper that received stacks of truss components such as blocks, top rails and filler strips and feed such truss components into stacked registration. The stacked truss components are moved into engagement with a series of staplers that secure the filler strips, top rails and blocks together to form first truss rail portions, which are then fed to a second truss rail assembly station where a bottom rail is automatically applied thereto.

A die changing apparatus comprises a first die support for supporting a plurality of dies, the die support having first and second die supporting portions which are spaced from one another. The die support is movable so that either the first die supporting portion or the second die supporting portion are locatable at a first transfer position. There is also provided a transfer arrangement comprising a first grip portion configured to grip a die from one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and thereby remove said gripped die from the first die support. The transfer arrangement is movable, independently of the die support, between a first configuration in which the first grip portion can grip said die from said one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and a second configuration in which the first grip portion can release said die and pass it to a second die support of a rivet setter located at a second transfer position.

A system and method for forming a foundation truss for a box spring or mattress foundation frame includes a first truss rail assembly station having a series of block feeders, a top rail hopper and a filler strip hopper that received stacks of truss components such as blocks, top rails and filler strips and feed such truss components into stacked registration. The stacked truss components are moved into engagement with a series of staplers that secure the filler strips, top rails and blocks together to form first truss rail portions, which are then fed to a second truss rail assembly station where a bottom rail is automatically applied thereto.

A system and method for forming a foundation truss for a box spring or mattress foundation frame includes a first truss rail assembly station having a series of block feeders, a top rail hopper and a filler strip hopper that received stacks of truss components such as blocks, top rails and filler strips and feed such truss components into stacked registration. The stacked truss components are moved into engagement with a series of staplers that secure the filler strips, top rails and blocks together to form first truss rail portions, which are then fed to a second truss rail assembly station where a bottom rail is automatically applied thereto.