Clamping apparatus, winding apparatus as well as unit

Abstract

A clamping apparatus for clamping a winding core is disclosed including a base, a clamping head, and a locking mechanism. The locking mechanism is adjustable between a lock position and a release position, and the clamping head is axially moveable relative to the base between an extended position and a retracted position. The locking mechanism in the lock position locks the clamping head in the extended position axially and forms a fixed stop for the clamping head. A winding apparatus and a unit for producing a material web are disclosed.

1 . A clamping apparatus for clamping a winding core, comprising a base, a clamping head and a locking mechanism,
 wherein the locking mechanism is adjustable between a lock position and a release position,   wherein the clamping head relative to the base is moveable axially between an extended position and a retracted position, and   wherein the locking mechanism in the lock position locks the clamping head in the extended position axially and forms a fixed stop for the clamping head.   
     
     
         2 . The clamping apparatus according to  claim 1 , wherein the locking mechanism is designed in such a way that at least one of it locks the clamping head in the extended position up to a maximum clamping force from at least 25 kN up to 30 kN; it locks the clamping head in the lock position from moving axially from the extended position into the retracted position by means of positive locking; or its length in the axial direction is longer in the lock position than in the release position. 
     
     
         3 . The clamping apparatus according to  claim 1 , wherein a difference in length between the lock position and the release position equals the axial movement of the clamping head between the extended position and the retracted position. 
     
     
         4 . The clamping apparatus according to  claim 1 , wherein the locking mechanism comprises a first locking element and a second locking element, wherein the first locking element and the second locking element are connected positively to each other in the lock position of the locking mechanism in the axial direction. 
     
     
         5 . The clamping apparatus according to  claim 4 , wherein the first locking element in the lock position rests on the second locking element in the axial direction. 
     
     
         6 . The clamping apparatus according to  claim 4 , wherein the first locking element is a splined shaft and the second locking element is a splined hub, or vice versa, which engage with each other in the lock position. 
     
     
         7 . The clamping apparatus according to  claim 4 , wherein the first locking element is at least one of fixed in the axial direction on the clamping head or connected non-rotatably to the clamping head. 
     
     
         8 . The clamping apparatus according to  claim 1 , wherein the clamping apparatus comprises a cylinder on which the clamping head is fixed, wherein the cylinder extends through the locking mechanism. 
     
     
         9 . The clamping apparatus according to  claim 1 , wherein the clamping apparatus comprises a first actuator for actuating the locking mechanism, wherein the locking mechanism is adjustable between the lock position and the release position by means of the first actuator. 
     
     
         10 . The clamping apparatus according to  claim 9 , wherein the first actuator is connected in such a way to the first locking element or the second locking element that it can apply torque to the corresponding locking element. 
     
     
         11 . The clamping apparatus according to  claim 1 , wherein the clamping apparatus comprises a second actuator which is connected to the clamping head in such a way that it applies a force to the clamping head in the axial direction. 
     
     
         12 . The clamping apparatus according to  claim 1 , wherein the clamping head has a tapered engagement section. 
     
     
         13 . A winding apparatus for winding and unwinding a flat material web comprising a support that comprises at least one receiving space for a winding core,
 wherein said at least one receiving space comprises a first clamping apparatus and a second clamping apparatus,   wherein at least the first clamping apparatus is a clamping apparatus comprising a base, a clamping head and a locking mechanism,
 wherein the locking mechanism is adjustable between a lock position and a release position, 
 wherein the clamping head relative to the base is moveable axially between an extended position and a retracted position, and 
 wherein the locking mechanism in the lock position locks the clamping head in the extended position axially and forms a fixed stop for the clamping head. 
   
     
     
         14 . The winding apparatus according to  claim 13 , wherein the winding apparatus comprises at least one winding core. 
     
     
         15 . The winding apparatus according to  claim 13 , wherein the second clamping apparatus is a clamping apparatus comprising an axially adjustable clamping head. 
     
     
         16 . The winding apparatus according to  claim 13 , wherein the support comprises two opposing rotatable wheels, wherein at least the clamping head and the locking mechanism of the first clamping apparatus is attached to a first one of the wheels, and at least the clamping head of the second clamping apparatus is attached to a second one of the wheels. 
     
     
         17 . The winding apparatus according to  claim 16 , wherein the support comprises at least two of the receiving spaces. 
     
     
         18 . The winding apparatus according to  claim 17 , wherein at least the clamping heads and the locking mechanisms of the first clamping apparatuses of the receiving spaces are attached to the first wheel and at least the clamping heads of the second clamping apparatuses of the receiving spaces are attached to the second wheel. 
     
     
         19 . The winding apparatus according to  claim 13 , wherein at least one of the first clamping apparatus is located on an operator side of the winding apparatus; the base is fixed statically to the support; or the base is a part of the support. 
     
     
         20 . A unit for producing a material web comprising a winding apparatus, the winding apparatus comprising a support that comprises at least one receiving space for a winding core,
 wherein said at least one receiving space comprises a first clamping apparatus and a second clamping apparatus,   wherein at least the first clamping apparatus is a clamping apparatus comprising a base, a clamping head and a locking mechanism,
 wherein the locking mechanism is adjustable between a lock position and a release position, 
 wherein the clamping head relative to the base is moveable axially between an extended position and a retracted position, and 
 wherein the locking mechanism in the lock position locks the clamping head in the extended position axially and forms a fixed stop for the clamping head.