Packaging machine

Abstract

A packaging machine comprises a transfer device for inserting a product into a package and a circulating leaflet supply device comprising a plurality of tong-like holders which are disposed in a row, for receiving one leaflet each, and for bringing the leaflet into the region of the transfer device between the product and the package such that it can be inserted together with the product into the package. An opening unit with at least one stop is disposed in the transport path of the holders for opening the holders to release the leaflet. The stop can be adjusted in dependence on an opening signal of a control device between an operative position opening the holders and an inoperative position in which the holders pass the stop without releasing the leaflet. A first detector device is thereby provided for detecting the insertion motion of the product into the package and for transmitting a corresponding insertion signal to the control device when the product is being inserted, wherein the control device generates the opening signal only when the insertion signal is present.

1 . Packaging machine comprising a transfer device for inserting a product (P) into a package (V) and with a circulating leaflet supply device ( 27 ) comprising a plurality of tong-like holders ( 15 ,  16 ) which are disposed in a row, for receiving one leaflet each, and for bringing the leaflet into the region of the transfer device between the product (P) and the package (V), such that it can be inserted together with the product (P) into the package (V), wherein an opening unit ( 12 ) is disposed in the transport path of the holders ( 15 ,  16 ) having at least one stop ( 13 ) for opening the holders ( 15 ,  16 ) to release the leaflet, wherein the stop ( 13 ) can be adjusted in dependence on an opening signal of a control device ( 26 ) between an operative position opening the holders ( 15 ,  16 ) and an inoperative position in which the holders ( 15 ,  16 ) pass the stop ( 13 ) without releasing the leaflet, characterized in that a first detector device ( 19 ) is provided which detects the insertion motion of the product (P) into the package (V) and transmits a corresponding insertion signal to the control device ( 26 ) when the product (P) is being inserted, wherein the control device ( 26 ) generates an opening signal only when the insertion signal is present.  
     
     
         2 . Packaging machine according to  claim 1 , characterized in that the first detector device ( 19 ) detects the insertion motion of an insertion plunger ( 11 ) abutting the product (P).  
     
     
         3 . Packaging machine according to  claim 1  or  2 , characterized in that the first detector device ( 19 ) comprises a first initiator ( 19   a ) which can be triggered by each passing insertion plunger ( 11 ), and a second initiator ( 19   b ) which can be triggered only by an insertion plunger ( 11 ) inserting the product (P).  
     
     
         4 . Packaging machine according to  claim 3 , characterized in that the first initiator ( 19   a ) resets an intermediate storage to the value 0 and the second initiator ( 19   b ), which is disposed downstream of the first initiator ( 19   a ) with respect to the transport direction, sets the intermediate storage to the value 1 when triggered, wherein the insertion signal is transmitted to the control device ( 16 ) only when the intermediate storage has the value 1.  
     
     
         5 . Packaging machine according to  claim 3  or  4 , characterized in that the initiators ( 19   a ,  19   b ) can be triggered by the insertion plunger ( 11 ) without contact.  
     
     
         6 . Packaging machine according to  claim 5 , characterized in that the initiators ( 19   a ,  19   b ) are formed by metal detectors, magnetic switches or light barriers.  
     
     
         7 . Packaging machine according to any one of the claims  1  through  6 , characterized in that the first detector device ( 19 ) and the opening unit ( 12 ) are adjustable as a unit in the transport direction (PZK) of the leaflet supply device ( 27 ).  
     
     
         8 . Packaging machine according to any one of the claims  1  through  7 , characterized by a second detector device ( 20 ) which detects the position of the next holder ( 15 ,  16 ) to be opened and transmits a corresponding holder signal to the control device ( 26 ).  
     
     
         9 . Packaging machine according to  claim 8 , characterized in that the stop ( 13 ) can be brought into the operative position in dependence on the insertion signal and the holder signal.  
     
     
         10 . Packaging machine according to  claim 8  or  9 , characterized in that the second detector device ( 20 ) can be adjusted, as a unit together with the first detector device ( 19 ) and the opening unit ( 12 ) in the transport direction (PZK) of the leaflet supply device ( 27 ).  
     
     
         11 . Packaging machine according to any one of the claims  1  through  10 , characterized in that the stop ( 13 ) is pretensioned by a spring into its inoperative position and the stop ( 13 ) has an associated controllable actuating device ( 24 ) with which the stop ( 13 ) can be brought into the operative position in opposition to the spring pretension.