Joining Method

Simple SummaryContent extracted from patent full text and abstract with AI.

The patent describes a method for joining two workpieces, such as metal or non-metal sheets or foils, so that there is no gap between them. The process involves bringing the workpieces together to form a joint, then fixing the joint geometrically using a film (often a transparent adhesive tape) applied to the surfaces at the joint, and finally joining the workpieces by welding (such as laser-beam welding). The film holds the parts in place but is not placed between the joint surfaces, ensuring a gap-free joint and making complex or thin components much easier to assemble without elaborate fixturing.

Use CasesContent extracted from patent full text and abstract with AI.

• Manufacturing of thin-walled pipes or tubes from metal or plastic foils for use in scientific and industrial equipment, such as scintillation chambers in particle accelerators.
• Assembly of lightweight structures with thin sheets where traditional clamping is difficult or damaging, such as aerospace panels or precision instrument components.
• Prototyping and custom manufacturing, where flexibility in joining complex or varied geometries is important, reducing the need for expensive, specialized fixtures.
• Mass production of electrical, thermal, or fluidic components made from stacked or joined sheets, like heat exchangers, battery components, or microfluidic devices.
• Repair, modification, or retrofitting of sheet structures, where access for clamps is limited and preservation of alignment is critical.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables true gap-free joining, improving the mechanical and functional quality of the welded joints, especially important for pressure-tight or precise parts.
• Significantly reduces the need for costly and complex mechanical or vacuum-based clamping devices, saving on tooling and setup costs.
• Simplifies joining of ultra-thin, flexible, or multi-layered materials, which are otherwise difficult to clamp and join without distortion or damage.
• Allows for easy alignment and holding of parts in three-dimensional and complex configurations, enabling more innovative designs.
• The film used for fixation is applied to the outside surfaces and can be transparent (permitting laser welding directly through the film), and may be easily removed or vaporized without residue, adding convenience and flexibility.
• Compatible with multiple joining techniques beyond laser welding (e.g., electron beam, plasma, or arc welding), depending on the film choice and joint geometry.
• Applicable to a wide range of material thicknesses (0.005 mm to 5 mm), from ultra-thin foils to typical sheet metal thicknesses, broadening its industrial utility.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

A method for the gap-free joining of two workpieces is provided. Said method comprises the following steps: a. the workpieces to be joined are brought into contact with each other so that a joining point is formed, b. the joining point is geometrically fixed by a film, c. the workpieces are joined in a gap-free manner, wherein step a. and step b. can be interchanged.