Pressing head and pressing device

Abstract

The invention discloses a pressing head and a pressing device, and belongs to the technical field of welding. The pressing head comprises a mounting frame, wherein a through hole for a welding beam topenetrate through is formed in the mounting frame. Elastic pressing claws are arranged on two sides of the through hole, are connected with the mounting frame and are capable of making contact with ato-be-pressed piece and elastically pressing the to-be-pressed piece. The pressing device comprises the pressing head. By arranging the pressing head, stress change of the to-be-pressed part cannot be transmitted to a stretching device in the welding process, so that the phenomenon that a mask plate is scrapped due to movement of patterns on the surface of a mask is avoided, and the elastic pressing claws of the pressing head can enable the mask to be tightly attached to a frame with the uneven surface, so that a problem that the mask and the frame are not welded firmly or insufficient welding exists as a molten metal liquid flows in the frame with the uneven surface is solved.

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...

AI Technical Summary

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

Images