Feeding and curling device for spring making machines

Abstract

A spring making machine includes a curling device and a feeding device. The curling device has a shaft which is driven by a first servo motor so as to ensure the precise movement of the metal line. The feeding device has a second servo motor connected to the shaft and the rotor of the second servo motor has a hole through which the shaft extends. The rotor of the second servo motor is engaged with the gear for feeding the metal line on the shaft so as to reduce the volume the mechanism occupies.

What is claimed is:  
     
         1 . A spring making machine comprising: 
 a curling device having a shaft and a first servo motor connected to the shaft, the first servo motor having a rotor which is fixed to the shaft so that the shaft is driven by the first servo motor;    a feeding device having a second servo motor connected to the shaft and which has a hollow rotor through which the shaft extends, the rotor driving a gear on the shaft and    a trans-roller unit which is driven by the gear on the shaft.    
     
     
         2 . The machine as claimed in  claim 1 , wherein the rotor of the first servo motor is connected to an output member which is fixed to the shaft so that the first servo motor drives the shaft.  
     
     
         3 . A spring making machine comprising: 
 a cling device having a shaft and a first servo motor connected to the shaft, the servo motor having a rotor which is fixed to the shaft so that the shaft is driven by the first servo motor;    a feeding device having a third servo motor and a first gear connected to the shaft and engaged with a second gear, the second gear connected to a trans-roller unit and the a toothed belt connected between the first gear and a gear of the third servo motor.