In-Die Installation System for Snap-in Nuts and Clips
Assembly under the press in punching and forming tools
The setting head JAI (J-Nut Aktive Insertion) is a fully automatic in-die installation system for snap-in nuts and clips. The system is suitable for progressive dies and transfer dies.
The setting head is installed in the press to apply such fasteners to sheet metal components during the press process.
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Advantages of the System
All important functions in the setting head are sensor-monitored with communication to the feeding system to stop the press in case of a malfunction well before top dead center (TDC) and thus avoid die damage.
If a snap-in nut is in the setting position and still being processed, the next snap-in nut can already be reloaded. The next fastener can therefore be shot into the setting head in parallel with the processing of one fastener. This means that higher processing speeds can be achieved even with long shot hose lengths.
The feed cylinder only moves to the setting position when a snap-in nut is to be installed. Transfer die: If there is no workpiece, the feed cylinder does not move to the setting position. It moves when a workpiece is present. The empty part sensor is either in the transfer grippers or in the tool itself. Coil change: When a coil change is required, the feed cylinder remains in the home position and the coil can be retracted as if there were no setting head installed in the tool.
The setting head has quick-release couplings for the shot hose and the multifunction hose for communication with the feeding system. There is no need to connect individual cables. This saves time and eliminates connection errors.
Installation and Processing
The setting head processes snap-on nuts / clips that are pushed onto the side of a sheet metal part. These fasteners are not inserted into the part through the press by a plunger (press-in mandrel). The setting head uses cylinders instead of a plunger.
Functionality
Setting process
The setting head is connected to the associated feeding system for press applications and is supplied with snap-in nuts / clips through a shot hose. When a clip is in the setting position, a release signal is sent to the press. Without a release signal, the press stops.
The snap-in nut is shot into the setting head and pushed onto a sheet metal part from the setting position. Regardless of the press tool, the fastener is not pressed by a plunger, but pushed on by a cylinder.
Main process
The main process co-ordinates the part request to the feeding system. It ensures that the snap-in nuts / clips are moved to the setting position on time and monitors the press strokes by interrogating the press cams.
Air supply
A pneumatic connection on the feed system transfers compressed air to the setting head.
Technical Data
Installation width: 50 / 60 / 70 / 80 mm
Pneumatic supply: 6 bar from feeding system
Control voltage: 24 V / DC from feeding system
Press-in force / path: Pneumatic, depending on component
Cycle time: Up to 60 cycles/min*
Interfering edge / Possible component depth: According to customer requirements
Working direction: Alignment of the setting head possible in all directions
*Depending on the fastener and length of the shot hose.
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