A welding apparatus for use in welding first and second sheets of material together includes a seal die, a platen, a control unit, and a power source adapted to provide energy to the seal die. The seal die is made of a conductive material and is configured to impart thermal-mechanical energy to the first and second sheets of material. The seal die includes a bottom surface configured to contact the first sheet, an inner edge, a chamfer extending between the bottom surface and the inner edge, a first blend radius, and a second blend radius. The first radius extends between the chamfer and the bottom surface, while the second radius extends between the chamfer and the inner edge. The platen is configured to support the second sheet, while the control unit is programmed to cause the seal die to be directed towards the platen.

Tight seal system for the packaging of products comprising a transverse welding station (14) of packaging sheets comprising: a first pair of discs (100) connected centrally to a first axis (101); said first pair of discs (100) rotating about said first axis (101); at least one first bar (102, 103) is positioned peripherally between said first pair of discs (100); a first welding jaw (111) is associated with said at least one first bar (102, 103); said first bar (102, 103) rotating so that said first jaw (111) is always facing in the same direction; a second pair of discs (130) connected centrally to a second axis (131); said second pair of discs (130) rotating about said second axis (131); at least one second bar (132, 133) is positioned peripherally between said second pair of discs (130); a second welding jaw (136) is associated with said at least one second bar (132, 133); said second bar (132, 133) rotating so that said second jaw (136) is always facing in the same direction; said first jaw (111) and said second jaw (136) are facing each other so that, rotating said first pair of discs (100) and said second pair of discs (130), said first jaw (111) and said second jaw (136) come into contact with each other and can perform welding of said packaging sheets; said first welding jaw (111) is associated with said at least one first bar (102, 103) by means of a plurality of pins (112) passing through said first bar (102, 103); two pins (120) secured inferiorly to said first bar (102, 103) support a third bar (121) parallel to said first bar (102, 103); a plurality of springs (122) are placed between said plurality of pins (112) and the inner surface of said third bar (121).

A belt splicer for splicing butt ends of thermoplastic belts together. The splicer uses a plurality of cranks in conjunction with heavy springs to close and rapidly open jaws holding butt ends of a belt in place against a heating wand for melting and against each other for welding the melted ends together. The rapid opening of the jaw also lowers the wand, which is locked in place by a wand lock during the melting of the butt ends.

In the present invention, one surface of a belt-shaped sheet laminate (10), in which a plurality of sheets are laminated, is pressed against a support member (21) having a light passage section (27) through which a laser beam (30) can pass, and the belt-shaped sheet laminate (10) is irradiated, from the support member (21) side via the light passage section (27), with a laser beam (30) to cut and fusion-bond the belt-shaped sheet laminate (10), thereby sealed edge sections (4) are formed by fusion-bonding the edge sections of the plurality of sheets.

Tight seal system for the packaging of products comprising a transverse welding station (14) of packaging sheets comprising: a first pair of discs (100) connected centrally to a first axis (101); said first pair of discs (100) rotating about said first axis (101); at least one first bar (102, 103) is positioned peripherally between said first pair of discs (100); a first welding jaw (111) is associated with said at least one first bar (102, 103); said first bar (102, 103) rotating so that said first jaw (111) is always facing in the same direction; a second pair of discs (130) connected centrally to a second axis (131); said second pair of discs (130) rotating about said second axis (131); at least one second bar (132, 133) is positioned peripherally between said second pair of discs (130); a second welding jaw (136) is associated with said at least one second bar (132, 133); said second bar (132, 133) rotating so that said second jaw (136) is always facing in the same direction; said first jaw (111) and said second jaw (136) are facing each other so that, rotating said first pair of discs (100) and said second pair of discs (130), said first jaw (111) and said second jaw (136) come into contact with each other and can perform welding of said packaging sheets; said first welding jaw (111) is associated with said at least one first bar (102, 103) by means of a plurality of pins (112) passing through said first bar (102, 103); two pins (120) secured inferiorly to said first bar (102, 103) support a third bar (121) parallel to said first bar (102, 103); a plurality of springs (122) are placed between said plurality of pins (112) and the inner surface of said third bar (121).

Various device embodiments perform a sealing operation on a moving web, and comprise, among other things a plate assembly with an air cylinder assembly. The air cylinder assembly comprises a mount, a back plate, at least one air cylinder positioned between the mount and the back plate. The first plate assembly further includes a linear servo motor for linearly moving the air cylinder assembly with respect to the first base, and a first tooling plate with a sealing surface area. The first tooling plate coupled to the back plate.

Various device embodiments perform a sealing operation on a moving web, and comprise, among other things a plate assembly with an air cylinder assembly. The air cylinder assembly comprises a mount, a back plate, at least one air cylinder positioned between the mount and the back plate. The first plate assembly further includes a linear servo motor for linearly moving the air cylinder assembly with respect to the first base, and a first tooling plate with a sealing surface area. The first tooling plate coupled to the back plate.

A belt splicer for splicing butt ends of thermoplastic belts together. The splicer uses a plurality of cranks in conjunction with heavy springs to close and rapidly open jaws holding butt ends of a belt in place against a heating wand for melting and against each other for welding the melted ends together. The rapid opening of the jaw also lowers the wand, which is locked in place by a wand lock during the melting of the butt ends.

The invention relates to a sealing station in a film bag filling device for sealing of film bags after a filling process, wherein the sealing station comprises a first and a second sealing arm for sealing of several filled film bags that are arranged next to one another, wherein the first sealing arm is moveable with a first drive shaft and the second sealing arm with a second drive shaft. A servo engine is disposed on the first drive shaft, and a drive movement of the first drive shaft from a first gear wheel is transferred to a second gear wheel that encroaches in the first gear wheel and from the second gear wheel to the second drive shaft. The invention further relates to a method for sealing of film bags after a filling process with the sealing station according to the invention with the following steps: positioning of filled film bags below the sealing station; closing of the sealing arms and application of a contact pressure with a first value and sealing of the filled film bags.

A sealing and cutting assembly that includes a first rotating assembly with a first axis of rotation and a first actuation tool rotating with respect to the first axis of rotation, and a second rotating assembly with a second axis of rotation and a second actuation tool rotating with respect to the second axis of rotation. The sealing and cutting assembly also includes a transmission system that includes first and second gearwheels associated with the second actuation tool, and an adjustment actuator for causing a relative rotation between the first and second gearwheels.