A connection element and connection method
A technology for connecting components and connecting methods, which is applied in the direction of connecting components, thin plate connections, mechanical equipment, etc., can solve the problems of weak welding parts, stress concentration, and low connection strength, and achieve continuous connection, reliable connection, and wide application range.
Active Publication Date: 2022-08-05
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0007] (3) Welding: Welding metallurgical defects, porosity, welding hot cracks, cold cracks, difficult welding of dissimilar materials, skilled workers are required, weak welding parts, internal depressions are difficult to find, thin metal warping and burn-through and other welding defects, connection High energy consumption and unfriendly working environment
(2) It may cause damage to the surface of the workpiece after connection
(3) Usually the connection strength is lower than that of screw connection
[0009] (5) Advanced welding (such as vibration welding, ultrasonic welding, laser welding, induction (electromagnetic) welding, CMT welding): In addition to inherent welding defects, process restrictions, surface quality requirements for joint surfaces, welding quality control and other issues, equipment big investment
[0010] (6) Special mechanical connections (solid stamping self-rivet rivets, TOX, SPR, FDS, ring groove nails, self-tapping screws, etc.): stress concentration caused by opening holes, low connection efficiency, and increased weight may be limited by the space of the connection structure Size, special connection tools (molds) that may be required
In addition, some of the connection processes require a large investment in equipment and other issues
Method used
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[0047] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, from which those skilled in the art can clearly understand the present application and be able to implement the present application. Without departing from the principles of the present application, the features of the various embodiments may be combined to obtain new embodiments, or instead of certain features of certain embodiments, to obtain other preferred embodiments.
[0048] Generally, thermosetting composite materials cannot be re-melted, and it is more suitable to join by means of bonding and mechanical joining. Thermoplastic composites are more difficult to bond than thermoset composites, so welding and hot pressing are suitable joining methods. The welding techniques of thermoplastic composite materials are: 1) hot gas welding; 2) hot plate welding; 3) vibration welding; 4) ultrasonic welding; 5) induction welding; 6) contact (...
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The present application belongs to the technical field of machinery, and in particular relates to a connecting element and a connecting method. The present application provides a connecting element for connecting plastic materials, the plastic material includes a connecting portion, the connecting element includes a geometric feature portion, and the geometric feature portion and the connecting portion can be self-locking and locking with each other, The connecting element is harder than the plastic material. The connecting element can realize a combined connection between a variety of different plastic materials / materials. The same connecting element can be used for the connection of plastic metal sheets as well as for the connection of thermoplastic polymer materials and thermoplastic composite materials. The connecting element and the connecting method can connect large-area curved surfaces economically, efficiently and reliably. The connecting element and the connecting method can meet the requirements of efficient, automatic and continuous connection.
Description
technical field [0001] The present application belongs to the technical field of machinery, and in particular relates to a connecting element and a connecting method. Background technique [0002] Joining refers to the way in which two or more workpieces are joined into a fixed geometry. With the continuous improvement of people's economical requirements of products and the ecological requirements of the environment, more and more products with lightweight structures and lightweight structures are developed, resulting in the continuous emergence of new materials and new manufacturing technologies. The continuous commercialization of new materials and new manufacturing technologies, as an important part of advanced manufacturing technologies, requires new connection methods that are compatible with them. In addition, new products, new components and new devices also put forward new requirements for connection methods, prompting the innovation of connection methods to meet th...
Claims
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IPC IPC(8): F16B5/00
CPCF16B5/00
Inventor 邹奕然
Owner BEIJING JIAOTONG UNIV