Arc welding protective cover

Abstract

The utility model discloses an arc welding protective cover, and relates to the technical field of arc welding. It comprises a head cover, a curved mask is fixed on the front of the bottom of the head cover, a window is provided on the curved mask, a visible arc sheet is provided on the inner side of the curved mask, a mounting structure is provided on the curved mask, a locking structure is provided on the back side of the curved mask, and the locking structure comprises fixed blocks symmetrically fixed on both sides of the curved mask, an arched plate is fixed on the back side of the fixed block, the opposite plate ends of the arched plate are fixed to the fixed block, screws are rotatably inserted between the fixed block and the arched plate, and arc belts are sleeved on the two screws. The utility model adopts the setting of the locking structure, and after the protective cover is buckled on the head of the staff, the control button starts the rotating motor, so that the two screws rotate synchronously, driving the arc belt to move along the direction of the screws, which is suitable for staff with different head circumferences, improves applicability, and does not need to be held by the staff, making the welding operation of the staff more convenient.

Description

Technical Field

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

[0002] Arc welding is a common metal joining method. The high temperature of the arc melts the surface of the weldment to form a weld, so that two or more metal workpieces are permanently connected together. Currently, a protective cover is required during the arc welding process.

[0003] An existing arc welding protective cover (authorization announcement number: CN218745458U) has the following defects: the above-mentioned arc welding protective cover disassembles and replaces the protective lens in a simple and quick manner, and uses a snap mechanism to reinforce it, so as to ensure the installation stability of the protective lens, but the above-mentioned and some existing protective covers require workers to hold them for welding operations, occupying one hand of the worker, which makes the welding operation inconvenient to a certain extent. For this reason, the utility model is proposed. Utility Model Content

[0004] The utility model aims to provide an arc welding protective cover to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an arc welding protective cover, including a top cover, a curved cover is fixed on the front bottom of the top cover, a window is provided on the curved cover, a visible arc sheet is provided on the inner side of the curved cover, a mounting structure is provided on the curved cover, a locking structure is provided on the back side of the curved cover, the locking structure includes fixed blocks symmetrically fixed on both sides of the curved cover, an arched plate is fixed on the back side of the fixed block, the opposite plate ends of the arched plate are fixed to the fixed block, screws are rotatably inserted between the fixed block and the arched plate, arc belts are sleeved on the two screws, sliding rods are fixed on both ends of the arc belt, sliding holes adapted to the sliding rods are provided on the opposite plates of the arched plates, and sprockets are fixedly sleeved on the outer ends of the two screws.

[0006] Preferably, a chain is connected to the sprocket, one end of the screw rod located at one side is connected to a rotating motor, the rotating motor is installed on a fixed block, and a plurality of stop blocks are fixed at equal distances on the inner arc surface of the arc belt.

[0007] Preferably, a shielding cover is fixed to the side of the arched plate, and the shielding cover is used to shield and protect the screw, sprocket and chain, and a thread groove adapted to the external thread of the screw is opened on the arc belt.

[0008] Preferably, the mounting structure comprises a visible arc piece arranged at the inner middle part of the arc cover, mounting L-shaped blocks are symmetrically arranged on both sides of the visible arc piece, and the visible arc piece is slidably inserted on the mounting L-shaped blocks.

[0009] Preferably, a limiting block is fixed on the upper inner side of the arc cover, a fixing rod is fixed to the bottom end face of the L-shaped block, a rotating stopper is rotatably sleeved on the fixing rod, an installation groove is opened on the top face of the rotating stopper, a spring is connected in the installation groove, and a connecting arch plate is fixed to the top end of the spring.

[0010] Preferably, a plurality of supporting arc blocks are fixed on the bottom circumference of the top cover, a plurality of ventilation holes are opened on the upper circumference of the top cover, a wearing handle is fixed on the bottom end of the arc mask, and a control button is installed on one side of the arch plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The arc welding protective cover is provided with a locking structure. After the protective cover is buckled on the head of the worker, the control button starts the rotating motor, so that the two screws rotate synchronously, driving the arc belt to move along the direction of the screws. The protective cover is suitable for workers with different head circumferences, improves applicability, and does not require the worker to hold the cover, making the welding operation more convenient for the worker. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the first three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of a second three-dimensional structure of the utility model;

[0015] Figure 3 It is a cross-sectional view of the utility model;

[0016] Figure 4 It is a three-dimensional split structure schematic diagram of a part of the structure of the utility model;

[0017] Figure 5 It is an enlarged structural schematic diagram of part A in FIG4 of the present utility model.

[0018] In the figure: 1, overhead cover; 101, air vent; 102, supporting arc block; 2, arc cover; 201, visible arc sheet; 202, mounting L-shaped block; 203, limit block; 204, fixing rod; 205, rotating block; 206, mounting groove; 207, spring; 208, connecting arch plate; 3, fixing block; 301, arch plate; 302, screw; 303, arc belt; 304, sliding rod; 305, sliding hole; 306, sprocket; 307, chain. DETAILED DESCRIPTION

[0019] 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.

[0020] Arc welding has the advantages of high flexibility, wide application range and low cost. A protective cover is needed during arc welding operations. The protective cover provided by the utility model is specifically used to be worn on the user's head. The user does not need to hold it in hand while working, making it more convenient to use while ensuring the protective effect. The installation structure ensures the convenience of installation and disassembly of the visible arc sheet 201. During the use of the protective cover, it is necessary to perform inspection and other preparation work in advance to ensure the normal use of the protective cover.

[0021] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: an arc welding protective cover, including a head cover 1, a curved cover 2 is fixed to the front of the bottom of the head cover 1, a window is opened on the curved cover 2, a visible arc sheet 201 is arranged on the inner side of the curved cover 2, a mounting structure is arranged on the curved cover 2, a locking structure is arranged on the back side of the curved cover 2, the locking structure includes a fixing block 3 symmetrically fixed on both sides of the curved cover 2, an arched plate 301 is fixed on the back side of the fixing block 3, the opposite plate end of the arched plate 301 is fixed to the fixing block 3, and the fixing block 3 and the arched plate 301 are fixed between Screw rods 302 are rotatably inserted, arc belts 303 are sleeved on the two screw rods 302, sliding rods 304 are fixed at both ends of the arc belts 303, sliding holes 305 adapted to the sliding rods 304 are opened on the opposite plate of the arch plate 301, sprockets 306 are fixedly sleeved on the outer ends of the two screw rods 302, and the visible arc sheet 201 is made of polycarbonate, which is a plastic material with high strength, good wear resistance and high transparency, so as to ensure effective protection against strong light and ultraviolet rays generated during welding, while allowing workers to observe the welding area.

[0022] In the embodiment, a chain 307 is linked to the sprocket 306, one end of the screw 302 located on one side is connected to a rotating motor, the rotating motor is installed on the fixed block 3, and a plurality of abutments are fixed at equal distances on the inner arc surface of the arc belt 303, wherein the rotating motor adopts a micro motor with a self-locking function in the prior art, and the sprocket 306 and the chain 307 are prior art, which ensure the synchronous rotation of the two screws 302.

[0023] In the embodiment, a shielding cover is fixed to the side of the arch plate 301, and the shielding cover is used to shield and protect the screw 302, the sprocket 306 and the chain 307. A thread groove adapted to the external thread of the screw 302 is provided on the arc belt 303. The arc belt 303 is used to wrap the back of the head of the staff. Through the setting of the locking structure, after the protective cover is buckled on the head of the staff, the control button starts the rotating motor to make the two screws 302 rotate synchronously, driving the arc belt 303 to move along the direction of the screw 302. It is suitable for staff with different head circumferences, improves applicability, and does not require staff to hold it, making it more convenient for staff to weld. The shielding cover is provided with a sliding hole adapted to the arc belt 303.

[0024] In the embodiment, the mounting structure includes a visible arc piece 201 arranged at the inner middle part of the arc cover 2, and mounting L-shaped blocks 202 are symmetrically arranged on both sides of the visible arc piece 201, and the visible arc piece 201 is slidably inserted on the mounting L-shaped block 202, wherein the visible arc piece 201, the top cover 1 and the arc cover 2 are existing technologies to ensure the functional use of the protective cover, and a limiting block 203 is fixed to the upper inner side of the arc cover 2, and a fixing rod 204 is fixed to the bottom end face of the mounting L-shaped block 202, and a rotating stopper 205 is rotatably sleeved on the fixing rod 204, and a mounting groove 206 is opened on the top surface of the rotating stopper 205, and a spring 207 is connected in the mounting groove 206, and a connecting arch plate 208 is fixed on the top of the spring 207, and a push block is fixed to the bottom of the inner side of the visible arc piece 201, so as to facilitate the grasping of the visible arc piece 201, wherein the spring 207 and the connecting arch plate 208 play a role in blocking and positioning the rotating stopper 205.

[0025] In the embodiment, a plurality of supporting arc blocks 102 are fixed on the bottom circumference of the top cover 1, a plurality of ventilation holes 101 are opened on the upper circumference of the top cover 1, a wearing handle is fixed on the bottom end of the arc mask 2, and a control button is installed on one side of the arch plate 301, wherein, when the protective cover is worn, the supporting arc blocks 102 contact the top of the head, and the ventilation holes 101 ensure the ventilation of the protective cover, and the control button is the prior art, and the control button is electrically connected to the protective cover and is used to control the position of the arc belt 303.

[0026] Working principle: When using the protective cover, the user holds the wearing handle and buckles the protective cover as a whole on the head, and then starts the rotating motor through the control button to rotate the two screws 302. The arc belt 303 moves closer to or away from the back of the head under the rotation of the screw 302 and the limiting action of the sliding rod 304 and the sliding hole 305, which makes it convenient for the staff to put on the protective cover. After the protective cover is put on, it is convenient to carry out welding operations. When the visible arc piece 201 needs to be installed or disassembled, the rotating block 205 is rotated to facilitate the removal of the visible arc piece 201 for replacement. The operation is convenient and quick.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. An arc welding protective cover, comprising an overhead cover (1), characterized in that: A curved mask (2) is fixed on the front of the bottom of the top mask (1), a window is provided on the curved mask (2), a visible curved sheet (201) is provided on the inner side of the curved mask (2), a mounting structure is provided on the curved mask (2), a locking structure is provided on the back side of the curved mask (2), the locking structure comprises a fixing block (3) symmetrically fixed on both sides of the curved mask (2), an arched plate (301) is fixed on the back side of the fixing block (3), and a plate opposite to the arched plate (301) is provided. The end portion is fixed to the fixed block (3), a screw rod (302) is rotatably inserted between the fixed block (3) and the arch plate (301), an arc belt (303) is sleeved on the two screw rods (302), a sliding rod (304) is fixed at both ends of the arc belt (303), a sliding hole (305) adapted to the sliding rod (304) is opened on the opposite plate of the arch plate (301), and a sprocket (306) is fixedly sleeved on the outer ends of the two screw rods (302).

2. The arc welding protective cover according to claim 1, characterized in that: The sprocket (306) is linked with a chain (307), one end of the screw rod (302) located at one side is connected to a rotating motor, and the rotating motor is installed on the fixed block (3), and a plurality of stop blocks are fixed at equal distances on the inner curved surface of the arc belt (303).

3. The arc welding protective cover according to claim 2, characterized in that: A shielding cover is fixed on the side of the arch plate (301), and the shielding cover is used to shield and protect the screw rod (302), the sprocket wheel (306) and the chain (307). The arc belt (303) is provided with a thread groove adapted to the external thread of the screw rod (302).

4. The arc welding protective cover according to claim 1, characterized in that: The mounting structure comprises a visible arc piece (201) arranged at the inner middle part of the arc cover (2), mounting L-shaped blocks (202) are symmetrically arranged on both sides of the visible arc piece (201), and the visible arc piece (201) is slidably inserted on the mounting L-shaped blocks (202).

5. The arc welding protective cover according to claim 4, characterized in that: A limiting block (203) is fixed on the upper inner side of the arc cover (2); a fixing rod (204) is fixed on the bottom end surface of the L-shaped mounting block (202); a rotating stopper (205) is rotatably sleeved on the fixing rod (204); a mounting groove (206) is provided on the top surface of the rotating stopper (205); a spring (207) is connected in the mounting groove (206); and a connecting arch plate (208) is fixed on the top end of the spring (207).

6. The arc welding protective cover according to claim 1, characterized in that: A plurality of supporting arc blocks (102) are fixed on the bottom circumference of the top cover (1), a plurality of ventilation holes (101) are opened on the upper circumference of the top cover (1), a wearing handle is fixed on the bottom end of the arc-shaped cover (2), and a control button is installed on one side of the arch plate (301).

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