A welding shield and anti-spatter welding torch
The welding protective cover, which combines magnetic and elastic components, automatically covers the electrode head to prevent sparks from flying, solving the problems of inconvenience and high cost of existing welding protective covers. It realizes automated protection of the welding process and improves welding quality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU AUTOMIBILE GRP MOTOR
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-03
AI Technical Summary
Existing welding protective covers are inconvenient to use and costly, and cannot effectively prevent welding sparks from flying, leading to sheet metal quality problems and safety risks.
Design a welding protective cover that uses a combination of magnetic and elastic components to automatically cover the electrode head to prevent sparks from flying. After welding is completed, it automatically returns to its original position. The cover is stably connected to the welding torch, reducing shaking and movement deviation.
It enables the automatic opening and closing of the protective cover during the welding process, which is convenient to use, low in cost, effectively prevents sparks from flying, and improves welding quality and safety.
Smart Images
Figure CN224445002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a welding protective cover and a welding torch that prevents sparks from splashing. Background Technology
[0002] With the increase in automobile production capacity, modern automobile production places increasingly higher demands on product quality management. Existing automated and manual welding lines generate significant sparks during sheet metal welding. These sparks impacting parts can cause quality issues such as sheet metal defects, and also pose environmental and safety risks. More specifically, during the weld nugget formation process, some molten metal splashes. These splashes impacting other parts can cause slight dents, resulting in sheet metal concavities. When spatter enters gaps in the assembly of parts, if the parts require a rolling process, the rolled edges will create convex areas, requiring manual rework, leading to wasted labor and reduced production efficiency.
[0003] To prevent welding sparks from splashing, existing technologies have been researched. For example, Chinese Patent Publication No. CN215746976U discloses a welding torch with a protective function, in which a protective cover is slidably connected to the torch, and the protective cover is connected to a pull rod. Pulling the pull rod moves the protective cover to cover the electrode head for protection. However, the above patent requires manual pulling of the protective cover during the welding process, which is inconvenient to use. Using a motor to drive the protective cover would greatly increase the cost. Utility Model Content
[0004] To overcome the inconvenience of using welding protective covers in the prior art, the first aspect of this utility model provides a welding protective cover that can automatically cover the electrode head during welding to prevent sparks from flying, and can automatically open to expose the electrode head when not welding, making it convenient to change the electrode cap.
[0005] The second aspect of this invention provides a welding torch that prevents sparks from splashing.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a welding protective cover, comprising: a cover body, the cover body being fitted onto a welding torch, the cover body having a welding opening for the electrode head of the welding torch to extend out, the cover body being deformable along a first direction to change the position of the welding opening, a magnetic component for magnetically attracting the workpiece to be welded being connected to the welding opening, and an elastic component being connected to the cover body, one end of the elastic component being connected to the end of the cover body near the welding opening, and the other end of the elastic component being connected to the end of the cover body away from the welding opening.
[0007] In this invention, a welding protective cover is fitted onto the welding torch. When welding is not in progress, the electrode tip extends from the welding opening of the cover, facilitating electrode cap replacement. When welding begins, the welding torch approaches the workpiece, and the magnetic component attracts it, causing deformation of the cover and elastic component along a first direction. The cover then protects the electrode tip from sparks. After welding is complete, the welding torch moves away from the workpiece, the magnetic component separates from the workpiece, and the elastic component returns to its original state, causing the cover to deform and allowing the electrode tip to extend from the welding opening. This welding protective cover requires no manual operation and automatically opens and closes during the welding process, making it more convenient and cost-effective.
[0008] Furthermore, it also includes a first bracket and a second bracket, both of which are connected to the cover body. The first bracket is located away from the welding opening relative to the second bracket. The two ends of the elastic member are connected to the first bracket and the second bracket, respectively. The first bracket is used for fixed connection with the welding gun.
[0009] In this design, the use of a first bracket and a second bracket facilitates the connection between the elastic element and the cover. The connection between the first bracket and the welding gun provides stable support for one end of the elastic element.
[0010] Furthermore, the first bracket is connected to a guide post extending in a first direction, and the second bracket has a guide hole through which the guide post is movably disposed.
[0011] In this design, guide posts and guide holes guide the deformation direction of the elastic element and the cover, reducing swaying and movement deviation.
[0012] Furthermore, it also includes a third bracket, which is fixedly connected to the cover body. The third bracket is located away from the welding opening relative to the second bracket, and is used to connect to the welding gun.
[0013] In this design, the cover is further connected to the welding gun using a third bracket, so that the cover is fixed to the welding gun at two points, thereby improving the stability of the connection between the cover and the welding gun.
[0014] Furthermore, the first bracket, the second bracket, and the third bracket each include an outer annular portion, an inner annular portion, and a fixing rod. The outer annular portion is fixedly connected to the inner sidewall of the cover, one end of the fixing rod is fixedly connected to the outer annular portion, and the other end of the fixing rod is fixedly connected to the inner annular portion.
[0015] In this design, a hollow area is formed between the outer and inner annular portions of the first, second, and third supports. This provides stable support while reducing weight. External cables and pipes connected to the welding torch can pass through the hollow area and are confined within it, reducing interference caused by the swinging of cables and pipes during welding.
[0016] Furthermore, both the outer annular portion and the inner annular portion are configured as detachable semi-circular rings along the cross section of the first direction.
[0017] In this design, the first bracket, the second bracket, and the third bracket are easily disassembled and assembled through the detachable outer and inner annular portions.
[0018] Furthermore, the magnetic element is configured as an annular shape that matches the edge of the welding opening.
[0019] In this design, setting the magnetic component as a ring allows the circumferential direction of the welding opening to fully conform to the workpiece surface, preventing welding sparks from splashing.
[0020] Furthermore, the inner wall of the cover is provided with a coating to prevent welding slag adhesion.
[0021] In this solution, an anti-welding slag adhesion coating is applied to the inner wall of the enclosure to protect it.
[0022] Furthermore, the elastic element is a tension spring.
[0023] In this design, the elastic element is a tension spring. During welding, the magnetic element attracts the workpiece, and the tension spring extends, thereby pulling the cover to extend and cover the electrode head. When not welding, the magnetic element separates from the workpiece, and the tension spring contracts and returns to its original position, thereby pulling the cover to shorten and expose the electrode head.
[0024] A welding torch that prevents sparks from splashing includes a welding torch body and a welding shield as described in the first aspect, the welding shield being connected to the welding torch body; in a non-welding state, the electrode head of the welding torch body can extend from the welding opening, and in a welding state, the electrode head of the welding torch body is located inside the welding shield.
[0025] In the technical solution of this utility model, since the welding torch that prevents sparks from splashing adopts the above-mentioned welding protective cover, it can prevent welding sparks from splashing, making it very convenient to use and low in cost.
[0026] Compared with the prior art, the beneficial effects of this utility model are:
[0027] I. This utility model relates to a welding protective cover, which is fitted onto a welding torch. When welding is not in progress, the electrode tip extends from the welding opening of the cover, facilitating electrode cap replacement. When welding begins, the welding torch approaches the workpiece, and the magnetic component attracts the workpiece, causing deformation of the cover and elastic component along a first direction. The cover then protects the electrode tip from sparks. After welding is completed, the welding torch moves away from the workpiece, the magnetic component separates from the workpiece, and the elastic component returns to its original state, causing the cover to deform again, allowing the electrode tip to extend from the welding opening. This utility model's welding protective cover requires no manual operation and automatically opens and closes during the welding process, making it more convenient to use and reducing operating costs.
[0028] Second, the welding torch of this utility model with anti-spark welding torch adopts the above-mentioned welding protective cover, which can prevent welding sparks from splashing, is very convenient to use, and has a low cost. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of the welding protective cover of this utility model;
[0030] Figure 2 This is an exploded view of the welding protective cover of this utility model;
[0031] Figure 3 This is a schematic diagram of the welded protective cover when the elastic element is not stretched.
[0032] Figure 4 This is a schematic diagram of the C-type welding torch in an unwelded state;
[0033] Figure 5 This is a schematic diagram of a C-type welding torch in the welding state;
[0034] Figure 6 This is a schematic diagram of the structure of the anti-spark welding torch of this utility model in the unwelded state;
[0035] Figure 7 This is a schematic diagram of the welding torch of this utility model in the welding state, which is designed to prevent sparks from splashing.
[0036] In the attached diagram: 1. Cover; 11. Welding opening; 2. Magnetic component; 3. Elastic component; 4. First bracket; 41. Guide post; 5. Second bracket; 51. Guide hole; 6. Third bracket; 71. Outer annular part; 72. Inner annular part; 73. Fixing rod; 8. Welding torch body; 81. Frame; 82. Servo motor; 83. Telescopic shaft; 84. Upper electrode; 85. Lower electrode; 86. Electrode head. Detailed Implementation
[0037] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.
[0038] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0039] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:
[0040] Example 1
[0041] refer to Figures 1 to 3 This embodiment discloses a welding protective cover, including a cover body 1, which is used to fit onto a welding torch to prevent sparks from flying during welding. The cover body 1 has a welding opening 11 for the welding torch electrode head to extend out. The cover body 1 can deform along a first direction to change the position of the welding opening 11. A magnetic element 2 for magnetically attracting the workpiece to be welded is connected to the welding opening 11. An elastic element 3 is connected to the cover body 1; one end of the elastic element 3 is connected to the end of the cover body 1 near the welding opening 11, and the other end of the elastic element 3 is connected to the end of the cover body 1 away from the welding opening 11. The elastic element 3 can deform along the first direction to drive the cover body 1 to deform, thereby moving the position of the welding opening 11. Taking the illustrated direction as an example, the first direction is the vertical direction.
[0042] In use, first place the welding protective cover on the welding torch near the electrode tip, ensuring that at least one part of the welding protective cover, away from the welding opening 11, is connected to the welding torch. (Reference) Figure 6 When not welding, the electrode tip extends from the welding opening 11 of the protective cover, facilitating electrode cap replacement. When welding begins, the welding torch approaches the workpiece, and the magnetic component 2 attracts the workpiece, causing deformation of the cover 1 and the elastic component 3 along the first direction. The cover 1 covers the electrode tip to prevent sparks from flying. (Refer to...) Figure 7After welding is completed, the welding torch moves away from the workpiece, and the magnetic component 2 separates from the workpiece. At this time, the elastic component 3 returns to its original state and pulls the cover 1 to deform, allowing the electrode head to extend from the welding opening 11. The welding protective cover of this embodiment does not require manual operation and can automatically open and close during the welding process, making it more convenient to use. Since the welding protective cover of this embodiment does not require an additional drive motor, its operating cost is low.
[0043] In this embodiment, the cover 1 can be a flexible cover that can deform along the first direction under the action of the magnetic element 2 or the elastic element 3. In other embodiments, the cover 1 can adopt a telescopic structure that can stretch and deform in the first direction. In this embodiment, the first direction can be consistent with the axial direction of the electrode head of the welding torch. The deformation of the cover 1 along the first direction can make the welding opening 11 cover the electrode head or make the electrode head protrude from the welding opening 11.
[0044] refer to Figure 1 The welding protective cover in this embodiment also includes a first bracket 4 and a second bracket 5. Both the first bracket 4 and the second bracket 5 are connected to the cover body 1. The first bracket 4 is located further away from the welding opening 11 than the second bracket 5. Both ends of the elastic element 3 are connected to the first bracket 4 and the second bracket 5, respectively. The first bracket 4 is used for fixed connection with the welding torch. In this design, the use of the first bracket 4 and the second bracket 5 facilitates the connection between the elastic element 3 and the cover body 1. The connection of the first bracket 4 to the welding torch provides stable support for one end of the elastic element 3.
[0045] Specifically, with Figure 1 Taking the direction shown as an example, both the first support 4 and the second support 5 are located inside the cover 1, with the second support 5 positioned below the first support 4 and closer to the welding opening 11. The first direction can be parallel to the axial direction of the electrode head 86 of the welding torch, and the line connecting the centers of the first support 4 and the second support 5 is parallel to the first direction. The upper end of the elastic element 3 is fixedly connected to the cover 1 and the welding torch via the first support 4, while the lower end of the elastic element 3 is fixedly connected to the second support 5 but not to the welding torch. The lower end of the elastic element 3 is suspended, so that the extension and retraction of the elastic element 3 along the first direction can drive the second support 5 to move up and down, thereby pulling the cover 1 to deform vertically and thus changing the height of the welding opening 11 in the vertical direction. When the elastic element 3 is in its original state, the electrode head 86 is exposed below the welding outlet; when the elastic element 3 is in its extended state, the electrode head 86 is covered by the cover 1.
[0046] refer to Figure 1The first bracket 4 is connected to a guide post 41 extending along a first direction, and the second bracket 5 has a guide hole 51 through which the guide post 41 is movably disposed. In this embodiment, the guide post 41 can move in the guide hole 51. Since the guide post 41 extends along the first direction, it can guide the deformation direction of the elastic member 3 and the cover 1 through the guide post 41 and the guide hole 51, thereby reducing swaying and movement deviation.
[0047] Specifically, there can be multiple guide posts 41, and the number of guide holes 51 corresponds to the number of guide posts 41, so that each guide post 41 can pass through the guide hole 51 below and move in the vertical direction.
[0048] refer to Figure 1 The welding protective cover in this embodiment also includes a third bracket 6, which is fixedly connected to the cover body 1. The third bracket 6 is far away from the welding opening 11 relative to the second bracket 5. The third bracket 6 is used to connect to the welding gun.
[0049] In this embodiment, the cover 1 is further connected to the welding torch using a third bracket 6, so that the cover 1 is fixed to the welding torch at two points, improving the stability of the connection between the cover 1 and the welding torch. In other embodiments, the installation position of the welding protective cover can be adjusted according to the type of welding torch. The first bracket 4 and the third bracket 6 are fixed to different parts of the welding torch respectively, improving the stability under force. The second bracket 5 is not connected to the welding torch and is suspended to allow the elastic element 3 to drive the cover 1 to expand and contract.
[0050] refer to Figure 1 The first bracket 4, the second bracket 5 and the third bracket 6 each include an outer annular part 71, an inner annular part 72 and a fixing rod 73. The outer annular part 71 is fixedly connected to the inner side wall of the cover 1. One end of the fixing rod 73 is fixedly connected to the outer annular part 71 and the other end of the fixing rod 73 is fixedly connected to the inner annular part 72.
[0051] In this embodiment, a hollow area is formed between the outer annular portion 71 and the inner annular portion 72 of the first bracket 4, the second bracket 5 and the third bracket 6. This provides stable support while making the system lighter. External cables connected to the welding torch and water / gas pipes can pass through the hollow area and be confined within it, reducing interference caused by the swinging of cables and pipes during the welding process.
[0052] Specifically, multiple fixing rods 73 can be evenly arranged circumferentially, serving to connect the outer annular portion 71 and the inner annular portion 72. For example, in this embodiment, four fixing rods 73 are provided, dividing the space between the outer annular portion 71 and the inner annular portion 72 into four sector-shaped sections, each sector being approximately 90 degrees, which can limit the movement of cables and water / gas pipes. The vertical projections of the sector-shaped sections of the first bracket 4, the second bracket 5, and the third bracket 6 can be corresponding, facilitating the sequential passage of cables and water / gas pipes and reducing bends.
[0053] refer to Figure 1 The magnetic element 2 is configured as a ring shape that matches the edge of the welding opening 11. In this embodiment, configuring the magnetic element 2 as a ring shape allows the circumference of the welding opening 11 to fully conform to the workpiece surface, preventing welding sparks from splashing.
[0054] In this embodiment, the inner wall of the cover 1 is provided with an anti-welding slag adhesion coating. This coating provides protection for the cover 1. The cover 1 can be made of fire-retardant materials, such as fire-retardant plastic, and needs to have a certain degree of deformation capability, allowing it to deform under the action of the magnetic component 2 and the elastic component 3. For example, the sidewall of the cover 1 can be designed as wavy or pleated, allowing for vertical expansion and contraction through bending deformation. Existing anti-welding slag adhesion materials can be used to coat the inner wall of the cover 1 to form the anti-welding slag adhesion coating.
[0055] In this embodiment, the elastic element 3 is a tension spring. (See reference...) Figure 7 During welding, the magnetic component 2 attracts the workpiece, causing the tension spring to extend and pull the cover 1 to extend and cover the electrode head 86. (Reference) Figure 6 When not welded, the magnetic component 2 separates from the workpiece, and the tension spring contracts and returns to its original state, thereby pulling the cover 1 to shorten and expose the electrode head 86.
[0056] Example 2
[0057] refer to Figure 2 This embodiment is similar to Embodiment 1, except that in this embodiment, both the outer annular portion 71 and the inner annular portion 72 are configured as detachable semi-circular rings along the cross-section of the first direction. The detachable outer annular portion 71 and inner annular portion 72 facilitate the disassembly and assembly of the first bracket 4, the second bracket 5, and the third bracket 6. The cross-section along the first direction in this embodiment can be referenced... Figure 1 It is a vertical cross section, that is, a cross section along the axial direction of the electrode head.
[0058] Specifically, taking the direction shown in Figure 1 as an example, the plane containing the first direction is the vertical plane, referred to here as the disassembly surface. The first bracket 4, the second bracket 5, and the third bracket 6 can all be disassembled along the disassembly surface, facilitating installation. The cover 1 can also be disassembled along the disassembly surface, with the same disassembly position as the first bracket 4, the second bracket 5, and the third bracket 6, similarly facilitating installation. The fixing rod 73 located on the disassembly surface can also be disassembled along both sides of the disassembly surface, and the disassembled fixing rods 73 can be connected by bolts.
[0059] Example 3
[0060] refer to Figures 4 to 7 This embodiment discloses a welding torch that prevents sparks from splashing, including a welding torch body 8 and a welding protective cover as in Embodiment 1 or Embodiment 2. The welding protective cover is connected to the welding torch body 8. In the non-welding state, the electrode head 86 of the welding torch body 8 can extend out from the welding opening 11. In the welding state, the electrode head 86 of the welding torch body 8 is located inside the welding protective cover.
[0061] refer to Figure 4 and Figure 5 The welding torch body 8 is illustrated using a conventional C-type welding torch as an example. The C-type welding torch includes a frame 81, a servo motor 82, a telescopic shaft 83, an upper electrode 84, a lower electrode 85, and electrode heads 86. The upper end of the frame 81 is connected to the servo motor 82, and the output shaft of the servo motor 82 drives the telescopic shaft 83. The moving end of the telescopic shaft 83 is connected to the upper electrode 84. The lower electrode 85 is connected to the lower end of the frame 81 and located on the opposite side of the upper electrode 84. Electrode heads 86 are installed at the ends of both the upper electrode 84 and the lower electrode 85. During use, the servo motor 82 drives the telescopic shaft 83 to move, bringing the upper electrode 84 closer to the lower electrode 85, causing the electrode heads 86 to contact both sides of the workpiece to be welded, thus connecting the circuit for welding. During use, the electrode heads 86 will be worn down by high temperatures, therefore requiring periodic replacement. If a fixed protective cover is used, the cover must be removed before replacing the electrode heads 86, which is inconvenient.
[0062] refer to Figure 6 and Figure 7 The welding protective cover is connected to the location of the upper electrode 84. Specifically, the first bracket 4 is connected to the moving end of the telescopic shaft 83, and the first bracket 4 can move with the telescopic shaft 83. The third bracket 6 is connected to the fixed end of the servo motor 82, and the second bracket 5 is suspended below the first bracket 4. The upper electrode 84 and the electrode head 86 extend from the welding opening 11 through the welding protective cover, facilitating the replacement of the electrode head 86 in the non-welding state. In the welding state, the welding protective cover can cover the position of the electrode head 86 to prevent sparks from flying.
[0063] The welding torch in this embodiment is equipped with a welding protective cover, which can prevent welding sparks from splashing. It is very convenient to use and has a low cost.
[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A welding shield characterized by: The device includes a cover (1) for attaching to a welding torch. The cover (1) has a welding opening (11) for the electrode head of the welding torch to extend out. The cover (1) can deform along a first direction to change the position of the welding opening (11). A magnetic element (2) for magnetically attracting the workpiece to be welded is connected to the welding opening (11). An elastic element (3) is connected to the cover (1). One end of the elastic element (3) is connected to the end of the cover (1) near the welding opening (11), and the other end of the elastic element (3) is connected to the end of the cover (1) away from the welding opening (11).
2. The welding shield of claim 1, wherein: It also includes a first bracket (4) and a second bracket (5), both of which are connected to the cover (1). The first bracket (4) is located away from the welding opening (11) relative to the second bracket (5). The two ends of the elastic member (3) are connected to the first bracket (4) and the second bracket (5) respectively. The first bracket (4) is used to fix the welding gun.
3. The welding shield of claim 2, wherein: The first bracket (4) is connected to a guide post (41) extending in a first direction, and the second bracket (5) has a guide hole (51) through which the guide post (41) is movably disposed.
4. The welding shield of claim 2 or 3, wherein: It also includes a third bracket (6), which is fixedly connected to the cover (1). The third bracket (6) is located away from the welding opening (11) relative to the second bracket (5). The third bracket (6) is used to connect to the welding gun.
5. The welding shield of claim 4, wherein: The first bracket (4), the second bracket (5) and the third bracket (6) each include an outer annular portion (71), an inner annular portion (72) and a fixing rod (73). The outer annular portion (71) is fixedly connected to the inner sidewall of the cover (1). One end of the fixing rod (73) is fixedly connected to the outer annular portion (71) and the other end of the fixing rod (73) is fixedly connected to the inner annular portion (72).
6. The welding shield of claim 5, wherein: Both the outer annular portion (71) and the inner annular portion (72) are configured as detachable semi-circular rings along the cross section of the first direction.
7. The welding shield of claim 1, wherein: The magnetic element (2) is configured as an annular shape that matches the edge of the welding opening (11).
8. The welding shield of claim 1, wherein: The inner wall of the cover (1) is provided with a coating to prevent welding slag adhesion.
9. The welding shield of claim 1, wherein: The elastic element (3) is a tension spring.
10. A flash-spatter-resistant welding torch characterized by: The welding torch body (8) includes a welding shield as described in any one of claims 1 to 9, wherein the welding shield is connected to the welding torch body (8); in the non-welding state, the electrode head (86) of the welding torch body (8) can extend out from the welding opening (11); in the welding state, the electrode head (86) of the welding torch body (8) is located inside the welding shield.