Tool for bending press

Abstract

A tool for a bending press is described, the tool comprising a safety element to prevent the tool from accidentally falling from a pressing table of the press.

1 . Tool for a bending press, the tool comprising:
 two opposite faces which have as a common border a bending edge of the tool,   a safety element to prevent the tool from accidentally falling from a pressing table of the press, the safety element being movable between a tool release position from the table and a tool locking position on the table,   a control element which
 is able to control the safety element to move it between said positions, and 
 is mounted on the tool so as to be accessible from both said opposite faces, 
   a single pass-through cavity passing through both said opposite faces,   the control element being placed inside the cavity and being configured for
 detecting the presence of a tool support when present inside the cavity, and 
 moving the safety element between the two positions as a function of the presence detected by the control element. 
   
     
     
         2 . Tool according to  claim 1 , wherein the safety element comprises a pin or a protruding tooth which can be retracted inside the profile of the tool. 
     
     
         3 . Tool according to  claim 1 , wherein the control element is a movable slide for converting the presence and/or a thrust of the support when it is inside the pass-through cavity into a displacement to be transmitted to the safety element via a mechanism. 
     
     
         4 . Tool according to  claim 1 , wherein the sensor is mechanical and mounted inside said pass-through cavity, inside an internal cavity of the tool, so as to protrude from a wall of the pass-through cavity, and so that it can be pushed by said support and transmit motion to the safety element. 
     
     
         5 . Tool according to  claim 1 , wherein the sensor is mounted inside the tool so as to be linearly translatable along an axis parallel to one or each of said opposite faces, and/or along an axis contained between said opposite faces. 
     
     
         6 . Assembly comprising:
 a tool according to  claim 1 ,
 a support that can be inserted into the tool's pass-through cavity to move it, the support comprising an inclined plane that is inclined with respect to the axis of advance of the support inside the cavity, and 
 positioned so as to meet the sensor and slide it on the inclined plane so as to move it along an axis lying in a plane orthogonal to the axis of advance inside the cavity. 
   
     
     
         7 . The assembly according to  claim 6 , wherein the support comprises a head which can be inserted into the pass-through cavity, the head comprising a blocking element, for locking the head integrally with the tool, which is
 mounted in a cavity that opens on the external surface of the head of the support, and   movable, along an axis lying in a plane orthogonal to the axis of advancement of the   head inside the cavity, between two positions:
 a retracted position in which it does not protrude from the external surface of the head of the support, and 
 an extracted position in which it protrudes from the external surface of the head of the support. 
   
     
     
         8 . The assembly according to  claim 7 , wherein the walls of the pass-through cavity of the tool comprise a recess complementary to the blocking element to receive a free end of the locking element. 
     
     
         9 . The assembly according to  claim 7 , comprising a control element which is translatable linearly with respect to the head of the support, so that the movement of the blocking element is controlled by the control element, the latter and the locking element being preferably coupled by means of an inclined plane or a cam-coupling to convert a translation of the control element into a translation of the locking element. 
     
     
         10 . The assembly according to  claim 9 , wherein the control element is a linearly sliding rod mounted inside the support. 
     
     
         11 . Tool according to  claim 2 , wherein the control element is a movable slide for converting the presence and/or a thrust of the support when it is inside the pass-through cavity into a displacement to be transmitted to the safety element via a mechanism. 
     
     
         12 . Tool according to  claim 2 , wherein the sensor is mechanical and mounted inside said pass-through cavity, inside an internal cavity of the tool, so as to protrude from a wall of the pass-through cavity, and so that it can be pushed by said support and transmit motion to the safety element. 
     
     
         13 . Tool according to  claim 2 , wherein the sensor is mounted inside the tool so as to be linearly translatable along an axis parallel to one or each of said opposite faces, and/or along an axis contained between said opposite faces. 
     
     
         14 . Tool according to  claim 3 , wherein the sensor is mounted inside the tool so as to be linearly translatable along an axis parallel to one or each of said opposite faces, and/or along an axis contained between said opposite faces. 
     
     
         15 . Tool according to  claim 1 , wherein the sensor is mounted inside the tool so as to be linearly translatable along an axis parallel to one or each of said opposite faces, and/or along an axis contained between said opposite faces. 
     
     
         16 . The assembly according to  claim 8 , comprising a control element which is translatable linearly with respect to the head of the support, so that the movement of the blocking element is controlled by the control element, the latter and the locking element being preferably coupled by means of an inclined plane or a cam-coupling to convert a translation of the control element into a translation of the locking element. 
     
     
         17 . The assembly according to  claim 17 , wherein the control element is a linearly sliding rod mounted inside the support.