A compression head and a compression device

Abstract

The invention discloses a compression head and a compression device, belonging to the technical field of welding. The pressing head includes a mounting frame, and the mounting frame is provided with a through hole for the welding beam to pass through; both sides of the through hole are provided with elastic pressure claws, and the elastic pressure claws are connected with the mounting frame. The elastic pressing claws can be in contact with the parts to be pressed and pressed elastically. The pressing device includes the above-mentioned pressing head. In the present invention, by setting the compression head, the stress change of the parts to be compressed cannot be transmitted to the stretching device during the welding process, thereby avoiding the phenomenon that the mask surface pattern moves and the mask plate is scrapped, and the elastic claws of the compression head can be The mask is closely attached to the frame with uneven surface, which solves the problem that the molten metal liquid flows in the frame with uneven surface, resulting in weak or false welding between the mask and the frame.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a pressing head and a pressing device. Background technique [0002] Currently, in the process of manufacturing the organic light-emitting layer of an OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display screen, a mask with a pattern is used to form a required pattern on an evaporation substrate by vacuum evaporation. The mask plate includes a mask and a frame. When the mask is combined with the frame, a stretching device is used to tension the mask on the frame, and then the mask is welded on the frame by a laser to form the required mask plate. [0003] Among them, such as figure 1 and 2 As shown, after the mask 100' is tensioned by the stretching device 400', the mask 100' and the frame are melted and welded at high temperature by a laser 300'. The inventor found in the process of connecting the mask 100' to the frame 200' that: [0004] 1) When the m...

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Problems solved by technology

[0004] 1) When the mask 100' is welded to the frame 200', the metal at the welding point 130' melts, and the stress inside the mask 100' to resist the stretching of the stretching device 400' changes, thus causing the surface of the mask 100' to pattern moves, such as figure 2 As shown, the pattern moves from position one 110' to position two 120', thereby causing the mask 100' to be scrapped;

[0005] 2) if image 3 As shown, the surface of the frame 200' used to connect the mask 100' is uneven, with tiny pits 210', and the molten metal liquid flows to the gap between the mask 100' and the frame 200', so that the mask 100' and the frame The connection of 200' has the problem of weak welding or weak welding

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