Horizontal transverse sealing station

Patent metadata

Field	Value
Publication number	US-9649810-B2
Application number	US-201414915980-A
Country	US
Kind code	B2
Filing date	Sep 2, 2014
Priority date	Sep 3, 2013
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

The invention relates to a horizontal transverse sealing station ( 10 a - b ), in particular for a horizontal tubular bag machine ( 12 a - b ), for producing transverse sealing seams ( 14 a - b ) on at least one film tube ( 18 a - b ) transported in a continuous, at least essentially horizontal transport direction ( 16 a - b ), comprising a transverse sealing station base ( 20 a - b ) fixedly connected to a packing machine ( 22 a - b ), a transverse sealing unit ( 24 a - b ), and at least one sealing jaw pair ( 28 a - b ) movably mounted on the transverse sealing unit ( 24 a - b ) and formed by two sealing jaws ( 26 a - b ), the sealing surfaces ( 30 a - b ) of which come closer to each other during a sealing process in a sealing movement ( 32 a - b ), which relative to the transverse sealing unit ( 24 a - b ) is provided with at least one movement component ( 34 a - b ) in the transport direction ( 16 a - b ), in order to seal material layers ( 36 a - b ) of the film tube ( 18 a - b ) between the sealing surfaces ( 30 a - b ) by way of heating and/or applying pressure, and to remove again at the end of the sealing process. According to the invention the transverse sealing unit ( 24 a - b ) is driveably mounted on the transverse sealing station base ( 20 a - b ) in a displacement movement ( 38 a - b ) that is at least substantially parallel to the transport direction ( 16 a - b ).

First claim

What is claimed is:

1. A horizontal transverse sealing station for a horizontal tubular bag machine ( 12 a ; 12 b ), for producing transverse sealing seams ( 14 a ; 14 b ) on at least one film tube ( 18 a ; 18 b ) transported in a continuous, at least substantially horizontal transport direction ( 16 a ; 16 b ), the horizontal transverse sealing station comprising a transverse sealing station base ( 20 a ; 20 b ), which is fixedly connected to the tubular bag machine ( 22 a ; 22 b ), the transverse sealing station base ( 20 a , 20 b ) including a transverse sealing unit ( 24 a ; 24 b ) having at least one sealing jaw pair ( 28 a ; 28 b ), which is movably mounted on the transverse sealing unit ( 24 a ; 24 b ) and is formed by two sealing jaws ( 26 a ; 26 b ) and the sealing surfaces ( 30 a ; 30 b ) of which, during a sealing process, come closer together in a sealing movement ( 32 a ; 32 b ) having relative to the transverse sealing unit ( 24 a ; 24 b ) at least one movement component ( 34 a ; 34 b ) in the transport direction ( 16 a ; 16 b ), in order to seal material layers ( 36 a ; 36 b ) of the film tube ( 18 a ; 18 b ) between the sealing surfaces ( 30 a ; 30 b ), under the application of at least one of heat and pressure, and to move said material surfaces apart again at the end of the sealing process, wherein the transverse sealing station base ( 20 a , 20 b ) also includes a mass compensating unit ( 42 a , 42 b ) having at least one drivably mounted compensating mass ( 44 a , 44 b ), characterized in that the transverse sealing unit ( 24 a ; 24 b ) is mounted drivably on the transverse sealing station base ( 20 a ; 20 b ) with a displacement movement ( 38 a ; 38 b ) at least substantially parallel to the transport direction ( 16 a ; 16 b ), wherein the at least one drivably mounted compensating mass ( 44 a , 44 b ), which, in a compensation movement ( 46 a , 46 b ) comprises at least one movement component ( 48 a , 48 b ) that is parallel to the displacement movement ( 38 a , 38 b ) and is driven such that the inertial forces induced by the displacement movement ( 38 a , 38 b ) and those induced by the compensation movement ( 46 a , 46 b ) are at least partially eliminated.

2. The horizontal transverse sealing station as claimed in claim 1 , characterized by a drive and/or control unit ( 40 a ; 40 b ), which is configured to drive the transverse sealing unit ( 24 a ; 24 b ) in the displacement movement ( 38 a ; 38 b ) during the sealing process such that a velocity difference of the sealing movement ( 32 a ; 32 b ) and of the film tube ( 18 a ; 18 b ) in the transport direction ( 16 a ; 16 b ) is at least substantially compensated.

3. The horizontal transverse sealing station as claimed in claim 1 , characterized by an energy storage unit ( 50 a ; 50 b ), which is configured to apply a restoring force ( 54 a ; 54 b ), opposite to a deflection ( 52 a ; 52 b ) of the displacement movement ( 38 a ; 38 b ), to the transverse sealing unit ( 24 a ; 24 b ).

4. The horizontal transverse sealing station as claimed in claim 1 , characterized by a supporting unit ( 56 a ), which is configured to support the film tube ( 18 a ) in a sealing region ( 58 a ) of the transverse sealing unit ( 24 a ), before and/or after the sealing process, against a weight force ( 60 a ).

5. The horizontal transverse sealing station as claimed in claim 1 , characterized by a crank mechanism ( 62 a ), which is configured to generate the displacement movement ( 38 a ) from a rotary drive movement ( 64 a ) of a displacement drive ( 66 a ).

6. The horizontal transverse sealing station as claimed in claim 1 , characterized by a linear drive ( 68 b ), which is configured to generate the displacement movement ( 38 b ).

7. The horizontal transverse sealing station as claimed in claim 1 , characterized in that the sealing jaws ( 26 a ) are mounted on sealing shafts ( 70 a ) mounted rotatably on the transverse sealing unit ( 24 a ).

8. The horizontal transverse sealing station as claimed in claim 1 , characterized in that the sealing jaws ( 26 b ) are mounted on crank mechanism ( 114 b ) mounted on the transverse sealing unit ( 24 b ).

9. A horizontal tubular bag machine ( 12 a ; 12 b ) comprising a horizontal transverse sealing station ( 10 a , 10 b ) as claimed in claim 1 .

Assignees

• Bosch Gmbh Robert

Inventors

• Thaerigen Jan

Classifications

• B29C66/83543

  cooperating flying jaws · CPC title

• B29C65/4825

  Pressure sensitive adhesives · CPC title

• B29C66/93451

  by controlling or regulating the rotational speed, i.e. the speed of revolution · CPC title

• B29C66/8412

  of different length, width or height · CPC title

• B29C66/83513

  cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path · CPC title