摘要:
The specification discloses a method and a coupler for joining polymeric tubular objects, such as pipe. The coupler includes (a) a rigid, electromagnetically inductive carrier, (b) a temperature-responsive expandable material on the carrier, and (c) a polymeric material on the expandable material. The method includes the steps of (a) inserting the coupler into the ends of two adjacent polymeric tubular objects, (b) creating an electromagnetic field about the coupler causing the carrier to heat, in turn causing the expandable material to expand and force the polymeric material against the tubular objects, and further in turn causing the polymeric material to melt, soften, or liquefy, and (c) terminating the electromagnetic field allowing the polymeric material to cure or solidify to bond to the tubular objects.
摘要:
A fitting for use in fusion welding mating thermoplastic components includes a weld bead chamber to capture and conceal a bead formed as a result of the fusion weld. The weld bead chamber integrates the bead into the fitting so that the joined parts have a finished look without mechanical polishing or grinding of the completed piece. A stop ledge included in the weld bead chamber prevents over insertion of a pipe or other component into the fitting. A view window in the fitting permits inspection of the finished bead.
摘要:
Radio frequency power for melting, sealing and welding plastic tubing compressed between a pair of manually or automatically actuated electrically conducting jaws of a hand held or fixed base tubing sealer is regulated by a pulse width modulator controlling the duty cycle of applied constant voltage pulses. A predetermined change of impedance of the tubing during compression and melting is detected to regulate the power applied and to ensure a weld of predetermined physical parameters. On completion of the weld, a first timer is reset and a further weld may be made. In the event of impedance mismatch, a second timer inhibits further application of power and resetting of the first timer. The use of the pulse width modulator enhances conservation of power and accommodates portability of the tubing sealer through use of rechargeable batteries as the power source.
摘要:
A method, for repairing a discrepant weld in a workpiece arrangement including at least two workpieces, comprising positioning a mechanical intermediary adjacent the discrepant weld and inserting the intermediary through the discrepant weld and into at least a distal workpiece of the two workpieces, wherein upon insertion, a proximate surface of the intermediary is exposed at a proximate side of the workpiece arrangement. The method further includes delivering weld energy to the intermediary. The intermediary is configured, and the weld energy provided, so that energy passes through the intermediary in a pre-determined manner. Energy passing through the intermediary in the pre-determined manner generates heat in material of the workpieces causing the material to melt at an arrangement interface. The method further comprises allowing or causing the material melted to cool, wherein the melted material, when cooled, forms and/or strengthens a robust joint connecting the workpieces.
摘要:
The specification discloses a method and a coupler for joining polymeric tubular objects, such as pipe. The coupler includes (a) a rigid, electromagnetically inductive carrier, (b) a temperature-responsive expandable material on the carrier, and (c) a polymeric material on the expandable material. The method includes the steps of (a) inserting the coupler into the ends of two adjacent polymeric tubular objects, (b) creating an electromagnetic field about the coupler causing the carrier to heat, in turn causing the expandable material to expand and force the polymeric material against the tubular objects, and further in turn causing the polymeric material to melt, soften, or liquefy, and (c) terminating the electromagnetic field allowing the polymeric material to cure or solidify to bond to the tubular objects.
摘要:
A joining apparatus includes a joining tool on which a joining component is held and which moves the joining component in an axial direction to position a metal section of the joining component on a surface of the workpiece. A heating device is provided for heating the metal section of the joining component to integrally couple the metal section to the workpiece. A sensor is connected to the joining tool acting to determine a zero point defined when a joining surface of the metal section has reached the surface of the workpiece before the workpiece is axially deformed.
摘要:
The invention relates to a method for axial joining of a hybrid joining component to a workpiece, wherein the joining component has a thermoplastic joining section and a metal section which can be heated, having the following steps: moving the joining component into contact with a surface of the workpiece; heating of the metal section such that the joining section at least partially melts; ending the heating of the metal section such that the joining component makes a force-fitting, interlocking and/or integral connection with the surface of the workpiece. In this case, the joining component is held with a regulated force and/or in a regulated position with respect to the workpiece at least during the heating of the metal section, in such a manner that the joining component can be joined to the surface of the workpiece without any opposing support.
摘要:
A method for determining the curing behavior of an adhesive- or sealant bead, the adhesive- or sealant bead being applied to a workpiece, places multiple test bodies on the adhesive- or sealant bead at different, pre-defined placement times, and deformations of the adhesive- or sealant bead, caused by the test bodies, are measured at a pre-defined end time.
摘要:
Coupling piece for an outer end of a multilayered conduit, comprising a coupling pipe which is provided on the outer side with a radially upright wall, wherein the wall is widened in axial direction at a radial distance from the outer side of the body, wherein the outer side of the coupling pipe, the upright wall and the widened portion enclose an annular insertion space into which the outer end of the conduit can be directly inserted, and wherein the radial distance between the widened portion of the wall and the outer side of the coupling pipe at the position of the entry to the insertion space is such that it is equal to or greater than the wall thickness of the conduit, wherein an inner diameter of the coupling pipe increases in outward direction at the exit.
摘要:
A coupling piece for an outer end of a multilayered conduit, includes a coupling pipe which is provided on the outer side with a radially upright wall, wherein the wall is widened in an axial direction at a radial distance from the outer side of the body. The outer side of the coupling pipe, the upright wall and the widened portion enclose an annular insertion space into which the outer end of the conduit can be directly inserted, wherein the inner wall of the coupling pipe is reinforced with an adjacent reinforcing layer which has a greater strength than the material of the coupling pipe. The reinforcing layer is provided with axial engaging elements, while the inner wall is provided with axial connecting elements which correspond with and connect to the engaging elements.