Thermoforming station, thermoforming system, method for forming or stamping articles produced

Abstract

The invention relates to a thermoforming station in which motors are oriented so as to rotate in the same sense on the drive of the upper table ( 33 ) and of the lower table ( 32 ) of the thermoforming station whilst actuating elements ( 31 ) are oriented in counterrotating manner. In addition, a wobbling table mounting ( 37 ) is proposed. Further disclosed is a table-guiding system which is separate from the upper yoke supports. Spring assemblies ( 46 ) for holding overload supports are also mentioned. The thermoforming station ( 26 ) operates as a whole more reliably and is very easily maintained.

1 . A thermoforming station having a forming tool with an upper tool and a lower tool and having a drive for the forming tool for moving into an opening and into a closing direction wherein the drive comprises two drive units, which during operation each have a driving direction of rotation and for moving the forming tool each act on the forming tool via an actuating element, wherein the actuating elements during the operation each have an actuating element direction of rotation,
 wherein   two drive units for the forming tool are arranged
 with co-rotating driving direction of rotation, 
 via transmissions, for driving the actuating elements with counter-rotating actuating element direction of rotation. 
   
     
     
         2 . The thermoforming station according to  claim 1 , wherein accelerating and braking moments of the two co-rotating drive units add up with respect to the thermoforming station. 
     
     
         3 . The thermoforming station according to  claim 1 , wherein the two drive units move the lower tool via two lower actuating elements. 
     
     
         4 . The thermoforming station according to  claim 1 , wherein the two drive units move the upper tool via two upper actuating elements. 
     
     
         5 . The thermoforming station according to  claim 1 , wherein four drive units and four actuating elements are present, in particular exactly four. 
     
     
         6 . The thermoforming station according to  claim 1 , wherein the drive units have vertical rotary axes. 
     
     
         7 . The thermoforming station according to  claim 1 , wherein two drive units are arranged at the same height on the thermoforming station, in particular two each on two yokes for the lower and for the upper tool. 
     
     
         8 . The thermoforming station according to  claim 1 , wherein two drive units are arranged diagonally to each other with respect to a stroke axis of the forming tool. 
     
     
         9 . The thermoforming station according to  claim 1 , wherein the actuating elements have horizontal rotary axes. 
     
     
         10 . The thermoforming station according to  claim 1 , wherein the actuating elements comprise eccentric shafts. 
     
     
         11 . The thermoforming station according to  claim 1 , wherein the actuating elements comprise toggle levers. 
     
     
         12 . The thermoforming station according to  claim 1 , wherein the drive units for the upper and/or lower tool are coupled via an electric shaft. 
     
     
         13 . The thermoforming station having a forming tool with an upper and a lower tool and having a drive for the forming tool for moving in an opening and in a closing direction, wherein the drive comprises two drive units, which during the operation each have a driving direction of rotation and for moving the forming tool act on the forming tool via an actuating element each, wherein the actuating elements during the operation each have an actuating element direction of rotation, in particular according to  claim 1 , wherein a drive unit can be arranged in a plurality of locations along the actuating element. 
     
     
         14 . The thermoforming station having a forming tool with an upper and a lower tool and having a drive for the forming tool for moving in an opening and in a closing direction, wherein the drive comprises two drive units, which during the operation each have a driving direction of rotation and for moving the forming tool act on the forming tool via an actuating element each, wherein the actuating elements during the operation each have an actuating element direction of rotation, in particular according to  claim 1 , wherein the upper and the lower tool comprise identical tables and/or yokes, which are arranged the other way around. 
     
     
         15 . The thermoforming station having a forming tool with an upper and a lower tool and having a drive for the forming tool for moving in an opening and in a closing direction, wherein the drive comprises two drive units, which during the operation each have a driving direction of rotation and for moving the forming tool act on the forming tool via an actuating element each, wherein the actuating elements during the operation each have an actuating element direction of rotation, in particular according to  claim 1 , wherein the moved upper and/or lower tool is mounted in a wobbling manner, in particular with mounting on a vertical guide permitting an axial rotation. 
     
     
         16 . The thermoforming station having a forming tool with an upper and a lower tool, and having a drive for the forming tool for moving in an opening and in a closing direction, wherein the drive comprises two drive units, which during the operation each have a driving direction of rotation and for moving the forming tool act on the forming tool via an actuating element each, wherein the actuating elements during the operation each has an actuating element direction of rotation, wherein an upper yoke for the upper tool and a lower yoke for the lower tool are interconnected via upper yoke supports, in particular according to  claim 1 , wherein a yoke support comprises an overload device. 
     
     
         17 . The thermoforming station according to  claim 16 , wherein the overload device comprises a spring assembly, a shearing pin and/or a compression sleeve. 
     
     
         18 . The thermoforming station according to  claim 16 , wherein the overload device comprises a switching-off, a recording and/or an acknowledging means, wherein in particular after a switching-off a renewed switching-on can only take place after an authentication. 
     
     
         19 . The thermoforming station having a forming tool with an upper and a lower tool, and having a drive for the forming tool for moving in an opening and in a closing direction, wherein the drive comprises two drive units, which during the operation each have a driving direction of rotation and for moving the forming tool act on the forming tool via an actuating element each, wherein the actuating elements during the operation each has an actuating element direction of rotation, wherein an upper yoke for the upper tool and a lower yoke for the lower tool are interconnected via yoke supports, in particular according to  claim 1 , wherein a table guide is formed separately from the yoke supports. 
     
     
         20 . The thermoforming station according to  claim 1 , wherein a drive unit is designed as motor, in particular all drive units are designed as motors. 
     
     
         21 . The thermoforming station according to  claim 1 , wherein a drive unit is configured passively and via a drive means is connected to an otherwise arranged motor for driving the drive unit. 
     
     
         22 . The thermoforming station according to  claim 21 , wherein the driving means comprises a belt or chain drive. 
     
     
         23 . The thermoforming station according to  claim 21 , wherein a motor with a plurality of driving units is connected in a driving manner to a plurality of passive drive units by means of one or a plurality of driving means. 
     
     
         24 . The thermoforming station according to  claim 23 , wherein the motor and passive drive units driven by it are arranged rotating in the same direction of rotation with respect to their motor or drive unit directions of rotation. 
     
     
         25 . The thermoforming system having a plurality of stations for processing foils or sheets having a thermoforming station according to  claim 1 . 
     
     
         26 . A method for forming and/or stamping articles of foils or sheets, wherein a thermoforming system according to  claim 25  and/or a thermoforming station is used. 
     
     
         27 . An article produced with a method according to  claim 26 .