一种激光点焊保护结构

Abstract

本实用新型提出一种激光点焊保护结构，包括保护罩，所述保护罩包括安装面，在所述安装面四周边缘向下延伸形成围壁，且在所述安装面与所述围壁之间形成具有下端开口的腔体，在所述腔体内设有隔层，所述隔层将所述腔体分隔形成通气腔及连通腔，在所述安装面上设有第一通气孔，所述第一通气孔与所述通气腔连通，在所述通气腔内形成保护通道，且所述保护通道分别与所述安装面及所述连通腔相连通，在所述保护通道上设有第二通气孔，以将所述保护通道与所述通气腔相连通。通过安装面上的第一通气孔将惰性气体通入到通气腔中，通气腔中的惰性气体通过第二通气孔进入到保护通道中，在进行激光焊接时，激光穿过保护通道作用于球杆的球头处，无需将整个装置置于真空腔中，无需单独设置一个真空环境进行加工，方便加工，容易操作。

Claims

1. A laser spot welding protection structure, characterized in that, The device includes a protective cover, which has a mounting surface. A surrounding wall extends downward from the periphery of the mounting surface, and a cavity with a lower opening is formed between the mounting surface and the surrounding wall. A partition is provided within the cavity, which divides the cavity into a ventilation cavity and a connecting cavity. A first vent is provided on the mounting surface, which communicates with the ventilation cavity. A protective channel is formed within the ventilation cavity, and the protective channel is connected to both the mounting surface and the connecting cavity. A second vent is provided on the protective channel to connect the protective channel to the ventilation cavity.

2. A laser spot welding protection structure according to claim 1, characterized in that It also includes a limiting structure that forms a limiting channel in the cavity. One end of the limiting channel is connected to the connecting hole at the mounting surface, and the other end is connected to the communicating cavity. The limiting structure extends into the communicating cavity through the limiting channel and is used to abut against the welded material.

3. The laser spot welding protection structure according to claim 2, characterized in that... It also includes a limiting nut, which has an external thread formed on the outer wall of the limiting structure and an internal thread formed on the inner wall of the limiting channel. The limiting structure is installed into the limiting channel by the mating connection of the external thread and the internal thread. The limiting nut is installed on the limiting structure and abuts against the connecting hole to restrict the downward movement of the limiting structure.

4. The laser spot welding protection structure according to claim 2, wherein The limiting structure includes a first limiting member and a second limiting member, and the limiting channel includes a first limiting channel and a second limiting channel. The first limiting channel is located near the center of the protective cover, and the second limiting channel is located at the periphery of the protective cover. The first limiting member extends into the communicating cavity through the first limiting channel, and the second limiting member extends into the communicating cavity through the second limiting channel. The first limiting member is used to abut against a first welded part of the welded object, and the second limiting member is used to abut against a second welded part of the welded object.

5. The laser spot welding protection structure according to claim 1, wherein It also includes a ventilation structure that protrudes upward at the mounting surface to form a first lifting position, the first vent being disposed on the first lifting position, and the ventilation structure being installed at the first vent to introduce inert gas.

6. The laser spot welding protection structure according to claim 1, wherein It also includes a third vent, which is disposed on the partition and located near the protective channel.

7. The laser spot welding protection structure according to claim 1, characterized in that, It also includes a suction cup, and the protective cover has a suction cup mounting position. The suction cup is installed at the suction cup mounting position and extends toward the communicating cavity.

8. The laser spot welding protection structure according to claim 1, characterized in that The second vent is circumferentially and evenly disposed on the side wall of the protection channel.

9. The laser spot welding protection structure according to claim 1, wherein The ventilation cavity is filled with steel wool.

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