Abstract: A method for manufacturing a tear-off lid (27). A lid blank (9) is punched with a punching tool (1, 5) having a die (6) and a cutting punch (2, 3) to form a lid ring (8) with a central removal opening (17) surrounded by a sealing flange (18). The edge of the removal opening (17) is then formed by drawing to a collar (20) projecting from the sealing flange (18) on the intended inside of the lid (underside), the collar (20) is rolled up at its free end and a tear-off foil (24) is sealed or glued onto the sealing flange (18) on the intended outside of the lid (upper side). In accordance with the invention, the die (6) is arranged on the inner side (bottom) of the lid and the cutting punch (2, 3) is moved into the die (6) from the outer side (top) of the lid while punching out a punched pad (16) and the punched pad (16) is conveyed by compressed air through the die (6) to a conveyor (33) by means of which it is removed from the tool area.

Abstract: A method for manufacturing a tear-off lid (27). A lid blank (9) is punched with a punching tool (1, 5) having a die (6) and a cutting punch (2, 3) to form a lid ring (8) with a central removal opening (17) surrounded by a sealing flange (18). The edge of the removal opening (17) is then formed by drawing to a collar (20) projecting from the sealing flange (18) on the intended inside of the lid (underside), the collar (20) is rolled up at its free end and a tear-off foil (24) is sealed or glued onto the sealing flange (18) on the intended outside of the lid (upper side). In accordance with the invention, the die (6) is arranged on the inner side (bottom) of the lid and the cutting punch (2, 3) is moved into the die (6) from the outer side (top) of the lid while punching out a punched pad (16) and the punched pad (16) is conveyed by compressed air through the die (6) to a conveyor (33) by means of which it is removed from the tool area.

Abstract: In the area of manufacturing covers with tear-open foils, the cover blanks, or covers are always secured against an undesired take-off from the transport means during the transport and the processing. This allows a very high manufacturing cadence equally for light covers and particularly for aluminium covers.

Abstract: In the area of manufacturing covers with tear-open foils, the cover blanks, or covers are always secured against an undesired take-off from the transport means during the transport and the processing. This allows a very high manufacturing cadence equally for light covers and particularly for aluminium covers.

Abstract: In the area of manufacturing covers with tear-open foils, the cover blanks, or covers are always secured against an undesired take-off from the transport means during the transport and the processing. This allows a very high manufacturing cadence equally for light covers and particularly for aluminium covers.

Abstract: In the area of manufacturing covers with tear-open foils, the cover blanks, or covers are always secured against an undesired take-off from the transport means during the transport and the processing. This allows a very high manufacturing cadence equally for light covers and particularly for aluminium covers.

Abstract: The invention relates to a processing device for covers (20), wherein processing stations are embodied as individual processing stations (47) provided with, respectively, one tool for one cover. Several of said stations work in parallel for the simultaneous processing of several covers. If need be, stations can also be used wherein several tools form groups which are functionally separate from each other. As a result, the processing precision and production speed of the objects can be increased.

Abstract: In a linear transport device (30) for tear-off lids (20), the latter are tested for the impermeability of the seal and the foil in a test device (9) that is integrated into the linear transport device. The lid is fixed between a pressure chamber (43) and a measuring chamber (47, 48, 49) in an airtight manner and a test pressure is applied to the lid from the underside. An air-permeable support (47) in the measuring chamber exerts pressure on the upper face of the lid and any increase in air pressure in the measuring chamber caused by a degree of permeability is detected and evaluated by a sensor (55). A burst test can be carried out in the same test device.

Abstract: The invention relates to a linear conveyor device (30) for objects (20), whereby the objects are taken by drive tongues (40), arranged on circulating toothed belts (31, 32). The objects are secured against lifting off the conveyor device, particularly mechanically, by a cover strip (50). Light objects can thus also be conveyed at high rate in intermittent operation.

Abstract: During the manufacturing of tear-open lids out of lid rings with a tear-open foil sealed on it, the tear-open foil having a tear-open tab, the tear-open tab is fixed by means of an adhesive surface which is applied onto the tape before stamping out the tear-open foil out of a band of this material.

Abstract: In the area of manufacturing covers with tear-open foils, the cover blanks, or covers are always secured against an undesired take-off from the transport means during the transport and the processing. This allows a very high manufacturing cadence equally for light covers and particularly for aluminium covers.

Abstract: Foil blanks are used in the packaging industry in the form of covering for metal lid rings. The invention relates to a method and processing machine for adhering a foil blank onto a lid ring comprising a first partial adhering step and a second completing adhering step, and the lid rings so formed.

Abstract: In a linear transport device (30) for tear-off lids (20), the latter are tested for the impermeability of the seal and the foil in a test device (9) that is integrated into the linear transport device. The lid is fixed between a pressure chamber (43) and a measuring chamber (47, 48, 49) in an airtight manner and a test pressure is applied to the lid from the underside. An air-permeable support (47) in the measuring chamber exerts pressure on the upper face of the lid and any increase in air pressure in the measuring chamber caused by a degree of permeability is detected and evaluated by a sensor (55). A burst test can be carried out in the same test device.

Abstract: A method and an apparatus are provided for taking heat images of heat sealed seams. Such seams are made in heat sealing stations and in particular when making covers or lids, respectively, for containers, being provided with a tear-off foil that closes the container up to the first use of its contents. For ascertaining the air-tightness of the heat sealed seam during manufacturing a heat image of the seam is taken while the seam is still hot. By evaluating the image it can be detected whether the temperature of the seam is within a range that assures a correct seam or has exceeded an upper or lower limit for the temperature which is indicative of a defective heat sealed seam. Defective objects can then be discarded based on the evaluation of the heat image. This test of the correctness of the heat sealing is much faster than a pressure differential test testing the actual air tightness of the seam and can thus be used in high speed manufacturing apparatus for covers or lids, respectively.

Abstract: The invention relates to a linear conveyor device (30) for objects (20), whereby the objects are taken by drive tongues (40), arranged on circulating toothed belts (31, 32). The objects are secured against lifting off the conveyor device, particularly mechanically, by a cover strip (50). Light objects can thus also be conveyed at high rate in intermittent operation.

Abstract: The invention relates to a processing device for covers (20), wherein processing stations are embodied as individual processing stations (47) provided with, respectively, one tool for one cover. Several of said stations work in parallel for the simultaneous processing of several covers. If need be, stations can also be used wherein several tools form groups which are functionally separate from each other. As a result, the processing precision and production speed of the objects can be increased.

Abstract: A method for the manufacture of welded tubes is provided. The tube bodies are produced in a press or rounding apparatus and are fed to a welding machine, such as a laser or electron beam type welding machine. The tube is formed when the edges of the tube bodies are welded together. The method includes the transfer of the tube bodies from the press or rounding apparatus to the draw-in of the welding machine. One or more transfer modules, each having a separate drive, are used to convey the tube bodies. The one or more transfer modules, which are operated by a common control arrangement, are controlled so that the intermittently formed tube bodies are presented at the draw-in to the welding machine in as nearly continuous a sequence as possible.

Abstract: A method for the manufacture of welded tubes is provided. The tube bodies are produced in a press or rounding apparatus and are fed to a welding machine, such as a laser or electron beam type welding machine. The tube is formed when the edges of the tube bodies are welded together. The method includes the transfer of the tube bodies from the press or rounding apparatus to the draw-in of the welding machine. One or more transfers modules, each having a separate drive, are used to convey the tube bodies. The one or more transfer modules, which are operated by a common control arrangement, are controlled so that the intermittently formed tube bodies are presented at the draw-in to the welding machine in as nearly continuous a sequence as possible.

Abstract: A tube welding machine (1) is of modular construction, the individual modules (2, 3, 4, 5) being arranged on a common support rail (6).

Abstract: During manufacture of certain hollow profiles suitable for use in car body construction the welded profiles are subjected to a further deformation process, namely hydroforming. At present the corresponding welding machines are charged manually. The invention relates to a method and a device for transferring hollow-profile blanks, characterized in that during transfer the positioned fusion faces of the blanks are pressed against each other at least in the area of the weld.