Welding gun safety structure and handheld welding gun
By designing a welding torch safety structure including slag barrier net and insulating components, the problems of anti-slag splash and unsafe operation during welding are solved, and the stability, reliability and safety of the welding torch are improved.
Patent Information
- Application Number
- CN202421012609.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Handheld welding guns are easily splashed by anti-slag during welding, and there are safety hazards for operators not to operate according to specifications.
A welding torch safety structure is designed, including the gun body, anti-slag-proof assembly and insulating assembly. The anti-slag anti-slag assembly seals the light exit channel in the welding nozzle through the slag barrier mesh, and the insulating component covers the gun body and wire feeding assembly to ensure that the welding gun can emit light normally only when the safety circuit clamp is stuck to the metal workpiece.
Effectively prevent anti-slag and debris from splashing into the inside of the gun body, protect the parts of the welding torch, and improve stability and reliability; at the same time, ensure that the welding torch can only be emitted under safe conditions, improve safety, and avoid accidentally injuring operators or other personnel.
Smart Images
Figure CN222492585U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of welding guns, in particular to a welding gun safety structure and a handheld welding gun. Background Art
[0002] With the development of society, the technology of laser products has gradually matured. Handheld welding guns, as a common laser product, are gradually being used more widely in life.
[0003] In the related art, the light-emitting area of a handheld welding gun is composed of a gun barrel and a copper nozzle. The debris, slag, etc. generated during welding are easy to splash back into the gun body, causing damage to the internal parts of the welding gun and affecting the normal operation of the welding gun. In addition, when welding, the operator needs to clamp the safety circuit clip on the welding gun on the metal workpiece. In this way, when the copper nozzle of the welding gun touches the metal workpiece, the welding gun, the safety circuit clip, and the metal workpiece form a complete safety circuit, and the welding gun can complete the light emission. However, there are still some operators who, for convenience, directly connect the safety circuit clip to the gun body of the welding gun, resulting in the welding gun being able to emit light normally without aiming at the metal workpiece, posing a safety hazard of accidentally injuring the operator or other personnel. Utility Model Content
[0004] In order to overcome the defects existing in the related art, the utility model provides a welding gun safety structure and a handheld welding gun.
[0005] The embodiment of the utility model is achieved as follows:
[0006] A welding gun safety structure includes a gun body, an anti-reverse slag component and an insulating component. A welding port is provided at a light-emitting portion of the gun body, and a welding nozzle is detachably mounted on the welding port. The anti-reverse slag component includes a slag blocking net, which is arranged in the welding nozzle; the slag blocking net can block the light-emitting channel in the welding nozzle, and the edge of the slag blocking net abuts against the side wall of the welding nozzle. The insulating component is covered on the gun body.
[0007] Furthermore, a light outlet is provided at the center of the slag blocking net.
[0008] Furthermore, the welding nozzle is configured to be conical, the cross-sectional area of the welding nozzle close to the gun body is S1, and the cross-sectional area of the welding nozzle away from the gun body is S2, satisfying: S1>S2.
[0009] Furthermore, the slag blocking net is arranged on the welding nozzle at a position close to the gun body, and the slag blocking net is arranged perpendicular to the axis of the welding nozzle.
[0010] Furthermore, an internal thread is provided on the gun body at a position facing the welding nozzle, and an external thread is correspondingly provided on the welding nozzle, and the internal thread can be meshed with the external thread.
[0011] Furthermore, a limiting step is provided at the internal thread, and when the external thread cooperates with the internal thread, the end of the external thread can abut against the limiting step; and the slag blocking net is provided between the external thread and the limiting step.
[0012] Furthermore, the insulating component includes a first insulating member, the first insulating member is coated on the gun body, and the welding nozzle extends out of the first insulating member.
[0013] Furthermore, a wire feeding assembly is provided on the gun body, and the wire feeding assembly can feed the welding wire to the welding nozzle; the insulating assembly also includes a second insulating member, and the second insulating member is covered on the wire feeding assembly.
[0014] Furthermore, the insulating component is made of Teflon.
[0015] The utility model also provides a handheld welding gun, comprising the welding gun safety structure described in any one of the above embodiments.
[0016] The beneficial effects of the embodiments of the utility model are:
[0017] The utility model provides a welding gun safety structure, including a gun body and an anti-reverse slag component. A welding port is provided on the light-emitting part of the gun body, and a welding nozzle can be detachably mounted on the welding port. The anti-reverse slag component includes a slag blocking net, which is arranged in the welding nozzle; the slag blocking net can block the light-emitting channel in the welding nozzle, and the edge of the slag blocking net abuts against the side wall of the welding nozzle. The insulating component is coated on the gun body. In this way, when a handheld welding gun is used, the laser ejected from the welding gun can pass through the slag blocking net normally and eject from the welding nozzle, so that the handheld welding gun can perform welding operations normally. During the welding process, the nitrogen ejected together with the laser can also pass through the slag blocking net normally, and will not affect the normal progress of the welding operation. The reverse slag and debris generated during the welding process will be intercepted by the slag blocking net after being sputtered into the inside of the welding nozzle, so as to prevent the reverse slag and debris from splashing into the gun body, protect the various components in the gun body, and improve the stability and reliability of the utility model.
[0018] The utility model has an insulating component on the gun body. When the operator is performing welding, even if the safety circuit clamp is connected to the gun body, the gun body, the safety circuit clamp and the metal workpiece will not form a complete safety circuit, and the gun body will not emit laser, so the operator must standardize the operation when using it, thereby improving the safety of the utility model. In addition, it is also ensured that the utility model will not emit laser when the gun body does not contact the metal workpiece, solving the potential safety hazard that the gun body can emit laser normally when it is aimed at other positions.
[0019] The utility model also provides a handheld welding gun, which has the above-mentioned welding gun safety structure, that is, has all the beneficial effects of the welding gun safety structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A structural schematic diagram of a handheld welding gun according to an embodiment of the utility model from one perspective;
[0022] Figure 2 A structural schematic diagram of a handheld welding gun from another perspective of an embodiment of the utility model;
[0023] Figure 3 A schematic structural diagram of a welding gun safety structure from one perspective of an embodiment of the utility model;
[0024] Figure 4 The welding gun safety structure of the utility model embodiment Figure 3 A partial enlarged view of point A in the middle.
[0025] icon:
[0026] 100 - gun body; 110 - welding nozzle; 120 - limiting step; 200 - wire feeding assembly; 300 - slag blocking net; 400 - insulation assembly; 410 - first insulation member; 420 - second insulation member. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] Example 1
[0034] This embodiment provides a welding gun safety structure to solve the problems in the related art that the welding gun is easily damaged by slag splashes during welding, and the operator does not operate according to the specification, which may cause safety hazards.
[0035] See also Figures 1 to 3 A welding gun safety structure includes a gun body 100, an anti-reverse slag assembly and an insulating assembly 400. A welding port is provided at the light-emitting portion of the gun body 100, and a welding nozzle 110 is detachably mounted on the welding port. The anti-reverse slag assembly includes a slag blocking net 300, which is disposed in the welding nozzle 110; the slag blocking net 300 can block the light-emitting channel in the welding nozzle 110, and the edge of the slag blocking net 300 abuts against the side wall of the welding nozzle 110. The insulating assembly 400 is coated on the gun body 100.
[0036] Specifically, when the handheld welding gun is in use, the laser emitted from the light output component flows along the optical path channel in the gun body 100, and is ejected from the welding nozzle 110 to perform welding operations on the metal workpiece to be welded. During the welding process, after the laser contacts the metal workpiece, slag and debris will be splashed, and some of the slag and debris may splash into the welding nozzle 110. The slag blocking net 300 can effectively block the slag and debris splashing into the welding nozzle 110, intercept it, protect the gun body 100, and prevent the slag and debris from splashing into the gun body 100 and causing damage to other parts.
[0037] The welding gun is provided with a safety circuit clip, and the safety circuit clip is arranged in the circuit of the welding gun. When the welding gun needs to be started, the safety circuit clip is clamped on the metal workpiece to be welded, and then the welding gun is held until the welding nozzle 110 of the welding gun abuts against the metal workpiece. The welding gun, the safety circuit clip and the metal workpiece form a complete safety circuit, and the welding gun can emit light normally and perform welding operations. This can also ensure the safety of the welding gun and prevent the welding nozzle 110 of the welding gun from emitting light when it is aimed at a workpiece other than the workpiece to be welded, causing a safety accident.
[0038] When the operator operates the welding gun for welding, for the convenience of use, there is an operation of directly clamping the safety circuit clamp on the gun body 100 of the welding gun, so that the welding gun and the safety circuit clamp can form a complete safety circuit, that is, the welding nozzle 110 of the welding gun can emit light normally when it is aligned with any position, resulting in a safety hazard when the welding gun is used, which may cause accidental injury to the operator or other relevant personnel. In this embodiment, the insulating component 400 is coated on the gun body 100, and the welding gun and the safety circuit clamp can no longer form a complete safety circuit. For the welding gun to emit light normally, the safety circuit clamp must be clamped on the metal workpiece to be welded, and the welding nozzle 110 of the welding gun must be controlled to contact the metal workpiece, so that the welding gun, the safety circuit clamp, and the metal workpiece can form a complete safety circuit, so that the welding gun can emit light normally. This makes the present embodiment safer when used, solves the safety hazard caused by the operator's irregular operation, and improves the reliability and safety of the present embodiment.
[0039] In one embodiment, for example, Figure 2 , Figure 3 As shown, a light outlet is provided at the center of the slag blocking net 300. The light outlet is provided at the center of the slag blocking net 300, so that when the welding gun emits light normally, the laser can pass through the light outlet normally, the slag blocking net 300 will not block the laser, and the nitrogen ejected from the side of the laser can also pass through the slag blocking net 300 normally without being blocked by the slag blocking net 300. It is ensured that the slag blocking net 300 in this embodiment will not affect the normal operation of the welding gun, so that the welding point can be welded normally, and the nitrogen can protect the welding point to prevent oxidation of the welding point.
[0040] In addition, nitrogen can also effectively improve the spattering during welding, and cooperate with the slag blocking net 300 in this embodiment to further improve the anti-reverse slag capability of this embodiment. Specifically, during welding, the nitrogen ejected along with the laser can blow away some debris and reverse slag, while the debris and reverse slag that cannot be blown away by nitrogen will also be blocked by the slag blocking net 300 after entering the welding nozzle 110.
[0041] It should be noted that the opening of the light outlet at the center of the slag blocking net 300 does not affect the anti-slag capability of the slag blocking net 300. If there are flying debris and anti-slag outside the light outlet, they will be blocked by the slag blocking net 300; the debris and anti-slag at the light outlet will be flushed out of the welding nozzle 110 by the laser, or melted by the laser, and will not enter the interior of the gun body 100.
[0042] It is worth mentioning that the slag blocking net 300 may not be provided with a light outlet, that is, the slag blocking net 300 may be directly provided as a mesh, and the material may be set as a copper mesh or an iron mesh. In this way, when the welding gun emits light, the laser will directly shoot onto the slag blocking net 300, penetrate and melt the slag blocking net 300, and melt a light outlet on the slag blocking net 300 that completely fits the cross section of the light beam. This will neither affect the normal light emission of the light beam, nor make the cross section of the light beam not completely fit the shape of the light outlet, which will affect the anti-reverse slag effect of the slag blocking net 300.
[0043] In one embodiment, for example, Figures 1 to 3 As shown, the welding nozzle 110 is configured to be conical, and the cross-sectional area of the welding nozzle 110 close to the gun body 100 is S1, and the cross-sectional area of the welding nozzle 110 away from the gun body 100 is S2, which satisfies: S1>S2. The welding nozzle 110 is configured to be conical, that is, the closer to the metal workpiece to be welded, the smaller the cross-sectional area of the welding nozzle 110 is, so that the welding nozzle 110 can effectively prevent the anti-slag and debris from splashing into the welding nozzle 110 without affecting the normal light output, and reduce the amount of anti-slag and debris splashing into the welding nozzle 110, so that the welding nozzle 110 cooperates with the slag blocking net 300 to jointly block the anti-slag and debris, and further improve the reliability of this embodiment.
[0044] In one embodiment, for example, Figures 2 to 4 As shown, the slag blocking net 300 is arranged on the welding nozzle 110 near the gun body 100, and the slag blocking net 300 is arranged perpendicular to the axis of the welding nozzle 110. The slag blocking net 300 is arranged at a position far away from the outlet of the welding nozzle 110, that is, after the splashing anti-slag and debris enter the welding nozzle 110, they will not directly hit the slag blocking net 300, but will fall into the welding nozzle 110, or move a distance in the welding nozzle 110 and then hit the slag blocking net 300. After leaving the welding point, the high-temperature anti-slag and debris will quickly cool down. There is a distance between the outlet of the welding nozzle 110 and the slag blocking net 300, so that the temperature of the anti-slag hitting the slag blocking net 300 will not be too high, reducing the damage caused by the anti-slag to the slag blocking net 300 and extending the service life of the slag blocking net 300.
[0045] In one embodiment, for example, Figure 3 , Figure 4 As shown, the gun body 100 is provided with an internal thread at a position facing the welding nozzle 110, and the welding nozzle 110 is correspondingly provided with an external thread, and the internal thread can mesh with the external thread. The welding nozzle 110 is connected to the gun body 100 through internal and external threads, making the connection process convenient and fast, and the installation difficulty is low.
[0046] It should be noted that the slag blocking net 300 can be connected to the welding nozzle 110 by welding, that is, when the slag blocking net 300 needs to be replaced after working for a period of time, the welding nozzle 110 can be directly connected to the slag blocking net 300 and replaced together as consumables, thereby reducing the difficulty of replacing the slag blocking net 300. At the same time, the welding nozzle 110 is connected to the gun body 100 by a thread, which is convenient for disassembly and installation, further reducing the difficulty of replacement.
[0047] In addition, it is worth mentioning that the welding nozzle 110 on the welding gun is generally regarded as a consumable. During the welding process, the nozzle is directly exposed to high temperature, sparks, metal spatter and welding smoke, all of which will cause the nozzle to gradually wear, deform or become clogged. In particular, for the welding nozzle 110 in gas shielded welding, due to the need to continuously deliver shielding gas, spatters are easily accumulated in the inner cavity and outlet of the nozzle, affecting the uniformity of gas flow and welding quality. Therefore, the welding nozzle 110 is a consumable that needs to be replaced regularly. The slag retaining net 300 is set as a whole with the welding nozzle 110, so that the welding nozzle 110 and the slag retaining net 300 can be replaced synchronously and regularly without increasing the replacement cost.
[0048] In one embodiment, for example, Figure 4 As shown, a limiting step 120 is provided at the internal thread, and when the external thread cooperates with the internal thread, the end of the external thread can abut against the limiting step 120; the slag blocking net 300 is provided between the external thread and the limiting step 120. The slag blocking net 300 is provided between the external thread and the limiting step 120, that is, the slag blocking net 300 is fixed by squeezing the welding nozzle 110 and the gun body 100 against each other. In this way, when the slag blocking net 300 needs to be replaced, it is also only necessary to remove the welding nozzle 110 and replace the slag blocking net 300. The improved installation method of this embodiment does not require the slag blocking net 300 to be replaced together with the welding nozzle 110, which reduces the replacement loss and makes this embodiment more practical.
[0049] In one embodiment, for example, Figure 2 , Figure 3 As shown, the insulating assembly 400 includes a first insulating member 410, which is coated on the gun body 100, and the welding nozzle 110 extends out of the first insulating member 410. The gun body 100 is insulated by the first insulating member 410, so that after the safety circuit clamp is clamped on the gun body 100, the first insulating member 410 cuts off the electrical connection between the gun body 100 and the safety circuit clamp, and the gun body 100 and the safety circuit clamp cannot form a complete safety circuit. The control welding gun can only clamp the safety circuit clamp on the metal workpiece, and the welding nozzle 110 can only emit light normally after it abuts on the metal workpiece, thereby improving the safety of the welding gun.
[0050] The welding nozzle 110 extends out of the first insulating member 410, ensuring that when the welding nozzle abuts against the metal workpiece to be welded, the gun body, the safety circuit clamp, and the metal workpiece can form a complete safety circuit, so that the first insulating member 410 will not affect the normal operation of the welding gun. In addition, the welding nozzle 110 will be directly exposed to high temperature, sparks, metal splashes, and welding smoke during welding. The welding nozzle 110 extends out of the first insulating member 410, which can also prevent the first insulating member 410 from being damaged during the welding process, thereby ensuring the insulation effect of the first insulating member 410.
[0051] In one embodiment, for example, Figure 2 , Figure 3 As shown, the gun body 100 is provided with a wire feeding assembly 200, which can feed the welding wire to the welding nozzle 110; the insulating assembly 400 also includes a second insulating member 420, which is covered on the wire feeding assembly 200. The wire feeding assembly 200 is usually arranged on the side of the gun body 100 close to the gripping portion, and the second insulating member 420 is arranged on the wire feeding assembly 200, so that after the safety circuit clamp is clamped on the wire feeding assembly 200, the second insulating member 420 cuts off the gun body 100, that is, the electrical connection between the wire feeding assembly 200 and the safety circuit clamp, and the gun body 100 and the safety circuit clamp cannot form a complete safety circuit.
[0052] In one embodiment, the insulating component 400 is illustratively made of Teflon material. Teflon material, that is, polytetrafluoroethylene (PTFE), has excellent electrical insulation performance, high resistivity, low dielectric loss, and can maintain stable insulation performance in high temperature and high humidity environments. It is not easy to conduct electricity and is suitable for use as an insulating layer in various electrical equipment. In addition, polytetrafluoroethylene can maintain its physical and chemical properties unchanged within a temperature range of -260°C to 260°C, thereby ensuring that the insulating component 400 can keep the welding gun insulated in both working and non-working states, thereby improving the stability and reliability of this embodiment.
[0053] Example 2
[0054] The utility model also provides a handheld welding gun, comprising the welding gun safety structure of any one of the above embodiments.
[0055] The handheld welding gun provided by the utility model includes the welding gun safety structure in any of the above embodiments, that is, it has all the beneficial effects of the above welding gun safety structure, which will not be described in detail here.
[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A welding gun safety structure, characterized in that: include: A gun body (100), wherein a light-emitting portion of the gun body (100) is provided with a welding port, and a welding nozzle (110) is detachably mounted on the welding port; An anti-rebound slag component, the anti-rebound slag component comprising a slag blocking net (300), the slag blocking net (300) being arranged in the welding nozzle (110); the slag blocking net (300) can block a light outlet channel in the welding nozzle (110), and an edge of the slag blocking net (300) abuts against a side wall of the welding nozzle (110); An insulating component (400), wherein the insulating component (400) is coated on the gun body (100).
2. The welding gun safety structure according to claim 1, characterized in that: A light outlet is provided at the center of the slag blocking net (300).
3. The welding gun safety structure according to claim 1, characterized in that: The welding nozzle (110) is configured in a cone shape, the cross-sectional area of the welding nozzle (110) close to the gun body (100) is S1, and the cross-sectional area of the welding nozzle (110) away from the gun body (100) is S2, satisfying: S1>S2.
4. The welding gun safety structure according to claim 3, characterized in that: The slag blocking net (300) is arranged on the welding nozzle (110) at a position close to the gun body (100), and the slag blocking net (300) is arranged perpendicular to the axis of the welding nozzle (110).
5. The welding gun safety structure according to any one of claims 1 to 4, characterized in that: An internal thread is provided on the gun body (100) at a position facing the welding nozzle (110), and an external thread is correspondingly provided on the welding nozzle (110), and the internal thread can be meshed with the external thread.
6. The welding gun safety structure according to claim 5, characterized in that: A limiting step (120) is provided at the internal thread, and when the external thread cooperates with the internal thread, the end of the external thread can abut against the limiting step (120); the slag blocking net (300) is provided between the external thread and the limiting step (120).
7. The welding gun safety structure according to claim 1, characterized in that: The insulating component (400) comprises a first insulating member (410), the first insulating member (410) is covered on the gun body (100), and the welding nozzle (110) extends out of the first insulating member (410).
8. The welding gun safety structure according to claim 7, characterized in that: The gun body (100) is provided with a wire feeding assembly (200), and the wire feeding assembly (200) is capable of feeding the welding wire to the welding nozzle (110); the insulating assembly (400) further includes a second insulating component (420), and the second insulating component (420) is coated on the wire feeding assembly (200).
9. The welding gun safety structure according to any one of claims 7 to 8, characterized in that: The insulating component (400) is made of Teflon material.
10. A handheld welding gun, characterized in that: The welding gun safety structure comprises the welding gun safety structure according to any one of claims 1 to 9.