Column-free closing unit for an injection-moulding apparatus

1 . Column-free closing unit for an injection-moulding apparatus,

wherein the closing unit has a machine frame ( 1 ), comprising two frame parts ( 2 ), wherein the machine frame ( 1 ) comprises a first wing ( 3 ) and a second wing ( 4 ),

wherein a fixed Mould clamping plate ( 5 ) is provided, which is arranged on the first wing ( 3 ), wherein the fixed Mould clamping plate ( 5 ) is fixedly connected to the first wing ( 3 ) at a fastening region ( 9 ),

wherein a closing device ( 6 ) is provided which engages on the second wing ( 4 ) and which is connected to a movable mould clamping plates ( 7 ), wherein the closing device ( 6 ) is configured to move the movable mould clamping plates ( 7 ) along a machine longitudinal axis ( 8 ) and to exert a pressing force in the direction of the fixed mould clamping plates ( 5 ),

wherein the fixed mould clamping plate ( 5 ) is elastically supported against the machine frame ( 1 ) below the fastening region ( 9 ) via a support device,

wherein the support device comprises a Connecting beam ( 10 ) extending substantially in the direction of the longitudinal axis ( 8 ) of the machine,

characterized in that the support device comprises at least one cantilever ( 11 ) which is subjected to bending stress when the pressing force is applied, the cantilever ( 11 ) being designed to transmit the pressing force from the fixed mould clamping plates ( 5 ) to the connecting beam ( 10 ), and in that the cantilever ( 11 ) runs substantially orthogonal to the machine longitudinal axis ( 8 ) and substantially orthogonal to the connecting beam ( 10 ).

2 . The closing unit according to claim 1 , characterized in that a connecting beam ( 10 ) connects the two frame parts ( 2 ) to one another, or in that two separate connecting beams ( 10 ) are provided, each of which is arranged on a frame part ( 2 ).

3 . The closing unit according to claim 1 , characterized in that the support device comprises a plurality of spring beams ( 11 ), the spring beams ( 11 ) being arranged next to one another in the direction of longitudinal extent of a connecting beam ( 10 ).

4 . The closing unit according to claim 2 characterized in that a spring bar ( 11 ) is arranged on each connecting beam ( 10 ) when two separate connecting beam ( 10 ) are provided.

5 . The device according to claim 1 ,

in that the cantilever ( 11 ) is/are connected to the fixed mould clamping plates ( 5 ) at a support region ( 12 ), wherein the support region ( 12 ) is arranged in the lower half of the fixed mould clamping plates ( 5 ), and wherein the fastening region ( 9 ) is arranged in the upper half of the fixed mould clamping plates ( 5 ),

or that the cantilever ( 11 ) is/are formed integrally with the fixed plates ( 5 ).

6 . The closing unit according to claim 5 , characterized in that the support region ( 12 ) is arranged above the corresponding connecting beam ( 10 ) with respect to the machine longitudinal axis ( 8 ).

7 . The closing unit according to claim 1 , characterized in that the cantilever ( 11 ) extend substantially parallel to one another when a plurality of cantilever ( 11 ) are provided.

8 . The closing unit according to claim 1 characterized in that an adjusting device is provided, which is configured to adjust the inclination of the fixed mould clamping plate ( 5 ).

9 . The closing unit according to claim 8 , characterised in that the adjusting device comprises an angled contact surface ( 13 ), the angled contact surface ( 13 ) being arranged on one or more of the following components:

on the fixed mould clamping plate ( 5 ) in the connection region to the spring beam ( 11 ), wherein the angled contact surface ( 13 ) being arranged in particular on the support region ( 12 ),

on the cantilever ( 11 ) in the connection area to the fixed plates ( 5 ),

on the cantilever ( 11 ) in the connecting area to the connecting beam ( 10 ),

on the connecting beam ( 10 ) in the connecting region to the spring beam ( 11 ), wherein the angled contact surface ( 13 ) has an angle of inclination a of greater than 0° with respect to the longitudinal extension direction of the spring beam ( 11 ), wherein optionally at least one angled contact surface ( 13 ) is provided per spring beam ( 11 ).

10 . The closing unit according to claim 8 characterised in that the adjusting device comprises an adjusting screw ( 22 ), an adjusting screw ( 22 ) optionally being provided on each spring bar ( 11 ).

11 . Closing unit according to claim 1 , characterised in that the cantilever(s) ( 11 ) is/are screwed to the fixed mould clamping plate ( 5 ), and/or in that the cantilever ( 11 ) is/are screwed to the cantilever ( 11 ).

12 . Closing unit according to claim 1 , characterised in that the cantilever ( 11 ) is/are prestressed against the fixed mould clamping plate ( 5 ).

13 . Closing unit according to claim 1 , characterised in that the connecting beam ( 10 ) is inserted into recesses in the frame parts ( 2 ), or in that the connecting beam ( 10 ) is made in one piece with at least one frame part ( 2 ).

14 . The closing unit according to claim 1 ,

the machine frame ( 1 ) has a substantially C-shaped frame geometry,

or that the machine frame ( 1 ) has a substantially H-shaped frame geometry, wherein the machine frame ( 1 ) additionally comprises a third wing ( 14 ) and a fourth wing ( 15 ), wherein a compensation device ( 17 ) is arranged between the third wing ( 14 ) and the fourth wing ( 15 ).

15 . The closing unit according to claim 14 , characterised in that the compensation device ( 17 ) is operatively connected to the closing device ( 6 ).

16 . The closing unit according to claim 1 , characterized in that the closing device ( 6 ) comprises an electric, hydraulic and/or mechanical locking mechanism.

17 . Arrangement of an injection-moulding apparatus with a closing unit according to claim 1 , wherein an injection nozzle of the injection-moulding apparatus is arranged on the fixed mould clamping plate ( 5 ).