摘要:
The invention relates to a method of manufacturing a shell part (101) for a wind turbine blade also comprising an add-on component (301, 302) connected to the shell part (101) along a connection face. The method comprises the steps of providing an insert (102) with a side surface of approximately the same shape as the connection face, positioning the insert in an open mould, and placing one or more layers (105) of material in the mould (103) to form the shell part (101) wherein the layers (105) are placed in abutment to the side surface (104) of the insert (102) thereby forming a side surface (108) of the shell part (101) of approximately the same shape as the connection face. After resin cure, the insert (102) is removed. The invention further relates to a method of manufacturing a wind turbine blade shell member (100) comprising such a shell part (101), and layers (105) of material are placed in the mould (103) in abutment to the side surface (108) of the shell part (101) to form the add-on component (301, 302).
摘要:
A lightweight structure at least sectionally composed of a plurality of connected mosaic elements and/or skin mosaic elements. The lightweight structure allows an essentially load-appropriate arrangement of the mosaic elements and/or the skin mosaic elements including the optional skin. The lightweight structure requires a significantly reduced number of connecting elements, such that the assembly effort can be reduced and an additional weight reduction can be achieved. Also, two variations of a method for manufacturing a lightweight structure are provided. Large-format lightweight structures such as, for example, an aircraft fuselage cell or partial shells thereof can also be manufactured in a reliable and dimensionally accurate fashion because only mosaic elements and skin mosaic elements, with relatively small dimensions, need to be handled. Other applications of the lightweight structure include launch vehicles, rocket stages, space stations, space station modules, satellites and masts or towers of wind power plants.
摘要:
An electronic device may have electronic components enclosed within a plastic housing. The plastic housing may include housing members that are joined using heat activated thermoset polymer film. The heat activated thermoset polymer film may be heated using a metal structure such as a strip of metal that is placed along a joint between the housing members. The temperature of the metal strip and associated layers of the thermoset polymer film may be raised by applying current to the metal strip using an external tool or the electronic components within the housing. Heat activated thermoset polymer film may be heated using a reactive multilayer metal foil. Heat sink layers of metal may be interposed between the reactive multilayer metal foil and the thermoset polymer film. A heated metal ring or a heated edge portion of a plastic housing member may also be used to heat the thermoset polymer film.
摘要:
Systems and methods to dispense various liquids, foams and sprays, of various viscosities, such as, for example, paints and stains, from a self-contained wearable apparatus are presented. These devices use an inner container/outer container technology. A device can be provided that is portable and self-contained, can be worn by a user, and can utilize pre-filled containers of the product to be dispensed, thus obviating use of a separate paint container. Novel performs for the manufacture and blowing of multi-layer bottles are also presented, including an outside layer, and two or more inside layers. The outer layer and the two or more inner containers may each be separately injection molded, or the outer container and one of the inner containers may be 2K molded, thus saving significant manufacturing time and cost.
摘要:
End portions of a sheet-shaped rubber member are manually and firmly joined together. A pair of opening/closing members is arranged to sandwich and move along the end portions. An opening/closing mechanism opens/closes the pair of opening/closing members between an open position and a closed position where the end portions are joined together. A pair of guiding rollers is provided to one opening/closing member and guides each of the end portions to a joining position. A pressing roller is provided to the other opening/closing member and presses each of the end portions onto the guiding roller. A pair of joining rollers is provided to the pair of opening/closing members, respectively, and sandwiches each of the end portions guided by the pair of guiding rollers. The joining rollers roll on each of the opposing end portions and abut and join the end portions to each other.
摘要:
An ultrasonic welding structure includes a welding plane and an energy-directing edge. The welding plane is formed on a first object or a second object. The energy-directing edge is formed on the first object or the second object and corresponds in position to the welding plane. The welding plane is oblique to a lamination direction of an ultrasonic device. The first object and the second object are welded together by ultrasonic welding which requires laminating the first object to the second object in the lamination direction so as for the energy-directing edge to exert a contact pressure upon the welding plane. Due to the welding plane and the energy-directing edge, ultrasonic welding thus performed requires less welding area and alignment structure than are taught by the prior art and is conducive to miniaturization of mobile electronic products.
摘要:
pipe having at least two steel pipe elements with internal lining that are assembled together end to end, with the ends of the two pipe elements being welded together. A tubular junction sleeve is interposed inside the pipe at the abutting ends of the two pipe elements so that the end terminal portions of the sleeve are at least in part in leaktight contact with respective ones of the terminal portions at the ends of the internal linings of the two pipe elements. The leaktight contact zone is a zone of fusion welding together the materials in mutual contact constituting at least a portion of each terminal portion of the sleeve and of each respective terminal portion of the lining. At each of the terminal portions of the sleeve in the leaktight contact zone, the tubular junction sleeve presents a Joule effect heater wire arranged in a double spiral on the outer surface of each terminal portion at the ends of the sleeve.
摘要:
The invention is a pipe joint that is particularly suitable for joining pipes composed of materials having a low surface energy and excellent resistance to solvents. The major components are an extrudable adhesive; a first pipe having a socket with an inside diameter, where said socket has a mouth, a self-centering bottom, and a substantially cylindrical wall with an inlet, an outlet, and an inner annular channel; a second pipe having an insertion section with an end and an outer annular channel, said second pipe having an outside diameter that is less than the inside diameter of the socket, where the difference in diameters defines a gap and where the outer annular channel lines up with the inner annular channel therein forming an interlocking keyway; and a flanged annular ring, where said annular ring has an inside diameter that enables it to be slid over the second pipe and a thickness that is comparable to the gap, and where the flange has a width that is sufficient to cap the mouth of the socket. When fully formed, the adhesive has changed to a solid material that substantially fills the gap and the interlocking keyway, and serves as a mechanical key in the interlocking keyway. The adhesive is preferably an alkyl borane adhesive
摘要:
A method for laser beam welding includes: forming a triangle protrusion on a light-absorption resin member; pressing a top of the protrusion on a translucent resin member; contacting the top of the protrusion and a part of the light-absorption resin member on the translucent resin member; irradiating a laser beam on the protrusion through the translucent resin member; and welding the translucent resin member to the light-absorption resin member with melted resin of the protrusion. The protrusion has a height, which provides to set deformation of the translucent resin member within a limit of a tensile strength of the translucent resin member, and the deformation of the translucent resin member is caused by the pressing the top of the protrusion.
摘要:
A novel locking pipe joint for use in fluid-carrying pipe systems is described. The locking pipe joint of the present invention provides a system of joints that will withstand the stresses and forces imposed on a pipe system carrying fluids. The joint is constructed on a push-fit principle. Sealing rings are used to make the joint leak-proof. Splines are provided to sustain the longitudinal forces imposed on the joint, and longitudinal ribs are provided on the outer surface of the joined pipes to withstand the torsional loads. The joint is simple in its construction, easy to assemble in field and cost effective.