Protective mask for electric arc welding

Abstract

The utility model relates to the technical field of electric-arc welding, in particular to a protective mask for electric-arc welding, which is characterized in that a box body is arranged in the protective mask, a protective rack is fixedly arranged on the upper end face of the main box body, observation glass is arranged in the protective rack, the observation glass plays a role in protecting and observing welding spots, and supporting racks which are bilaterally symmetrical are fixedly arranged on the left side and the right side of the rear side of the observation glass. A limiting cavity connected with the outside is formed in the supporting rack, a guiding shaft is fixedly arranged on the upper end face of the main box body and located on the rear side of the protection rack, a limiting spring capable of stretching out and drawing back is arranged on the outer circle face of the guiding shaft, a moving rack capable of moving up and down is arranged on the outer circle face of the guiding shaft, and the lower end face of the moving rack is fixedly connected with the upper end face of the limiting spring. And a pushing rack is fixedly arranged on the left end face of the movable rack, so that quick disassembly and replacement of the observation glass are ensured, the problem that the traditional observation glass is directly fixed with the protective mask is further solved, the use cost is saved, and the practicability of the protective mask is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of arc welding, in particular to a protective mask for arc welding. Background Art

[0002] Arc welding refers to the use of an electric arc as a heat source and the physical phenomenon of air discharge to convert electrical energy into the heat and mechanical energy required for welding, thereby achieving the purpose of connecting metals. The main methods include arc welding, submerged arc welding, gas shielded welding, etc. It is currently the most widely used and important fusion welding method. During use, the existing arc welding protective masks only protect the face and cannot protect the hands. In addition, the observation glass is easily splashed with debris generated during welding, which directly affects the clarity of subsequent use. In addition, the traditional observation glass and the protective mask are fixed together, so they need to be replaced as a whole, further increasing the cost of use. Utility Model Content

[0003] The purpose of the utility model is to provide a protective mask for arc welding, which is used to overcome the above-mentioned defects in the prior art.

[0004] According to the utility model, a protective mask for arc welding comprises a main box body, a protective frame is fixedly provided on the upper end surface of the main box body, an observation glass is arranged in the protective frame, and the observation glass plays a role in protecting and observing welding points, and left and right symmetrical supporting frames are fixedly provided on the left and right sides of the rear side of the observation glass, and a limiting cavity connected to the outside is arranged in the supporting frame, a guide shaft is fixedly provided on the upper end surface of the main box body and is located on the rear side of the protective frame, a limiting spring that can move telescopically is provided on the outer circular surface of the guide shaft, and a movable frame that can move up and down is provided on the outer circular surface of the guide shaft, the lower end surface of the movable frame is fixedly connected to the upper end surface of the limiting spring, a pushing frame is fixedly provided on the left end surface of the movable frame, and a left-right symmetrical positioning frame is fixedly provided on the upper end surface of the pushing frame and is inserted into the limiting cavity, thereby realizing the function of facilitating the replacement of the observation glass.

[0005] In some embodiments, a rotating shaft is rotatably provided at the rear side of the main housing, a rotating motor is fixedly provided in the main housing, and a right end surface of the rotating shaft is dynamically connected to the rotating motor.

[0006] In some embodiments, a handle is fixedly provided on the outer circumferential surface of the rotating shaft, and a protective frame is fixedly provided on the front end surface of the handle, so that the protective frame plays a protective role for the hands.

[0007] Compared with the prior art, the advantages of the utility model are:

[0008] 1. The utility model controls the control panel, at which time the rotating motor starts to start, thereby driving the rotating shaft to start rotating. At this time, the handle and the protective frame begin to rotate backward, thereby reducing the space occupied by subsequent storage, further ensuring the flexibility and practicality of the protective mask, and a protective frame is provided inside, thereby ensuring the protection of the hands during welding, thereby improving the protectiveness of the protective mask.

[0009] 2. The utility model presses the movable frame downward, thereby driving the limit spring and the movable frame to start moving downward along the guide shaft. At this time, the pushing frame and the positioning frame inserted into the limit cavity start to move downward. When the pushing frame is completely away from the limit cavity, the observation glass can be directly removed, thereby ensuring the rapid disassembly and replacement of the observation glass, further changing the problem that the traditional observation glass is directly fixed to the protective mask, thereby saving the cost of use and ensuring the practicality of the protective mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a left view of the utility model;

[0011] Figure 2 It is a rear view of the utility model;

[0012] Figure 3 It is a right view of the utility model;

[0013] Figure 4 This utility model Figure 3 Schematic diagram of AA in the middle;

[0014] Figure 5 This utility model Figure 2 Schematic diagram of the appearance of the observation glass component.

[0015] In the figure:

[0016] 11. Main box; 12. Protective frame; 13. Rotating shaft; 14. Handle; 15. Rotating motor; 16. Protective frame; 17. Guide shaft; 18. Limit spring; 19. Moving frame; 20. Positioning frame; 21. Observation glass; 22. Supporting frame; 23. Limiting cavity; 24. Pushing frame; 25. Control panel. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Embodiment 1

[0019] See also Figure 1-Figure 5 , is the first embodiment of the utility model, which provides an embodiment of a protective mask for arc welding, including a main box body 11, a protective frame 16 is fixedly provided on the upper end surface of the main box body 11, and an observation glass 21 is arranged in the protective frame 16, so that the observation glass 21 plays a role in protecting and observing welding points, and left and right sides of the rear side of the observation glass 21 are fixedly provided with left-right symmetrical support frames 22, and a limit cavity 23 connected to the outside is arranged in the support frame 22, and a guide shaft 1 is fixedly provided on the upper end surface of the main box body 11 7 and is located at the rear side of the protective frame 16, the outer circumferential surface of the guide shaft 17 is provided with a limit spring 18 that can move telescopically, the outer circumferential surface of the guide shaft 17 is provided with a movable frame 19 that can move up and down, the lower end surface of the movable frame 19 is fixedly connected to the upper end surface of the limit spring 18, and a pushing frame 24 is fixedly provided on the left end surface of the movable frame 19, and a left-right symmetrical positioning frame 20 is fixedly provided on the upper end surface of the pushing frame 24 and is inserted into the limit cavity 23, thereby realizing the function of facilitating the replacement of the observation glass 21.

[0020] A rotating shaft 13 is rotatably provided at the rear side of the main housing 11 . A rotating motor 15 is fixedly provided inside the main housing 11 . The right end surface of the rotating shaft 13 is dynamically connected to the rotating motor 15 .

[0021] A handle 14 is fixedly disposed on the outer circumferential surface of the rotating shaft 13 , and a protective frame 12 is fixedly disposed on the front end surface of the handle 14 , so that the protective frame 12 plays a role in protecting the hands.

[0022] Specific workflow:

[0023] When in use, the user directly holds the handle 14 and observes the welding point through the observation glass 21, so that the protective frame 16 prevents the sparks of welding from splashing onto the face. When use is completed, the control panel 25 is controlled, and the rotating motor 15 starts to start, thereby driving the rotating shaft 13 to start rotating. At this time, the handle 14 and the protective frame 12 start to rotate backward, thereby reducing the space occupied by subsequent storage, further ensuring the flexibility and practicality of the protective mask, and the protective frame 12 is provided inside, thereby ensuring the protection of the hands during welding, thereby improving the protectiveness of the protective mask.

[0024] Due to long-term use, the spatters generated by welding can easily adhere to the front end surface of the observation glass 21, thereby affecting subsequent use, and further directly affecting the clarity of observation of the welding point. At this time, the user presses down on the movable frame 19, thereby driving the limit spring 18 and the movable frame 19 to start moving downward along the guide shaft 17. At this time, the pushing frame 24 and the positioning frame 20 inserted into the limit cavity 23 start to move downward. When the pushing frame 24 is completely away from the limit cavity 23, the observation glass 21 can be directly removed at this time, thereby ensuring the rapid disassembly and replacement of the observation glass 21, further changing the problem that the traditional observation glass 21 is directly fixed to the protective mask, thereby saving the cost of use and ensuring the practicality of the protective mask.

[0025] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A protective mask for arc welding, comprising a main housing (11), characterized in that: A protective frame (16) is fixedly provided on the upper end surface of the main box body (11), an observation glass (21) is provided inside the protective frame (16), left-right symmetrical support frames (22) are fixedly provided on the left and right sides of the rear side of the observation glass (21), a limit cavity (23) connected to the outside is provided inside the support frame (22), and a guide shaft (17) is fixedly provided on the upper end surface of the main box body (11) and is located on the rear side of the protective frame (16); The outer cylindrical surface of the guide shaft (17) is provided with a limit spring (18) capable of telescopic movement, and the outer cylindrical surface of the guide shaft (17) is provided with a movable frame (19) capable of upward and downward movement, the lower end surface of the movable frame (19) is fixedly connected to the upper end surface of the limit spring (18), a pushing frame (24) is fixedly provided on the left end surface of the movable frame (19), and a left-right symmetrical positioning frame (20) is fixedly provided on the upper end surface of the pushing frame (24) and is inserted into the limit cavity (23).

2. The arc welding protective mask according to claim 1, characterized in that: A rotating shaft (13) is rotatably provided at the rear side of the main housing (11), a rotating motor (15) is fixedly provided inside the main housing (11), and the right end surface of the rotating shaft (13) is dynamically connected to the rotating motor (15).

3. The arc welding protective mask according to claim 2, characterized in that: A handle (14) is fixedly provided on the outer circumferential surface of the rotating shaft (13), and a protective frame (12) is fixedly provided on the front end surface of the handle (14).

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