Welding protective sleeve and welding equipment

Abstract

The utility model relates to the technical field of welding equipment, in particular to a welding protective sleeve and welding equipment. The welding equipment comprises a welding gun and a welding protective sleeve; the welding gun comprises a connector and a contact tube connected to the connector. The welding protection sleeve comprises a protection sleeve body and an air pipe. The protective sleeve is provided with a protective cavity and an air hole communicated with the protective cavity; the air pipe is provided with an air outlet end and an air inlet end and connected with the protective sleeve, the air outlet end communicates with the air hole, the air inlet end is used for being connected with an air source, and the air pipe is used for blowing air into the protective cavity; the protective sleeve is connected with the connector, and the contact tube is arranged in the protective cavity. The welding equipment blows air through the air pipe connected with the protective sleeve, so that welding slag is cleaned in time, and the shutdown frequency of the welding equipment is reduced; the problems that the welding slag cannot be cleaned in time and falls on a workpiece to be welded subsequently, the appearance of the workpiece to be welded subsequently is poor, and the welding quality is reduced can be solved; and meanwhile, the protective sleeve and the contact tube can be cooled, so that the service lives of the protective sleeve and the contact tube are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a welding protective sleeve and welding equipment. Background Technology

[0002] The welding equipment provided by related technologies usually feeds the welding wire through a contact nozzle for welding. In order to avoid the welding effect being affected by air, a protective sleeve is usually added to the outside of the contact nozzle to blow out protective gas inside the protective sleeve, so as to use the protective gas to reduce the influence of air on the welding quality.

[0003] During welding, weld slag will splatter and adhere to the protective sleeve and even the contact tip; therefore, it is necessary to stop the machine regularly to clean the weld slag. Frequent shutdowns for slag cleaning will reduce production efficiency. If the weld slag is not cleaned in time, it will accumulate and easily fall onto the welding surface of subsequent workpieces under its own weight, causing not only poor appearance but also reduced welding quality. Utility Model Content

[0004] The problems solved by this utility model are how to clean welding slag in a timely manner, reduce the frequency of welding equipment downtime, improve the problem of welding slag not being cleaned in time and falling onto the workpieces to be welded in a timely manner, resulting in poor appearance and reduced welding quality, and how to extend the service life of the conductive nozzle and protective sleeve of the welding equipment.

[0005] To address the aforementioned problems, this utility model provides a welding protective sleeve and welding equipment.

[0006] In a first aspect, this utility model provides a welding protective sleeve, comprising:

[0007] A protective sleeve, the protective sleeve having a protective cavity, and the side wall of the protective sleeve having vents communicating with the protective cavity; and,

[0008] The trachea has an outlet end and an inlet end. The trachea is connected to the protective sleeve, and the outlet end is connected to the air hole. The inlet end is used to connect to the air source. The trachea is used to blow air into the protective cavity.

[0009] By blowing air into the protective chamber through the air pipe, the welding slag adhering to the protective sleeve can be blown off and cleaned, thereby reducing the frequency of downtime for cleaning welding slag. Moreover, timely cleaning of welding slag by the airflow from the air pipe can also effectively improve the problem of welding slag falling onto the workpieces to be welded later, thus ensuring that the workpieces to be welded later have a good appearance and reliable welding quality.

[0010] At the same time, the airflow blown into the protective chamber through the air tube can also cool the protective sleeve, which helps to extend the service life of the protective sleeve and greatly improves the welding production quality.

[0011] In an optional embodiment, the air outlet is inserted into the air hole, and the end of the air outlet is flush with the inner wall of the protective sleeve or retracted into the air hole relative to the inner wall of the protective sleeve.

[0012] By ensuring that the outlet end of the gas pipe does not extend into the protective cavity of the protective sleeve, the protective sleeve will not be interfered with by the gas pipe when it is installed on the welding torch of the welding equipment, which will help improve the efficiency of installing the protective sleeve on the welding torch.

[0013] In an optional embodiment, the protective sleeve has a first end and a second end distributed along its length, the first end of the protective sleeve being for connection with the welding torch, and the second end of the protective sleeve being for exposing the welding wire; wherein,

[0014] The direction from the air inlet to the air outlet is at an acute angle to the direction from the first end of the protective sleeve to the second end of the protective sleeve; and / or,

[0015] The axis of the vent is distributed at an acute angle to the direction from the first end of the protective sleeve to the second end of the protective sleeve.

[0016] Setting at least one of the air vents on the air pipe and the protective sleeve to be inclined helps to ensure that the gas blown into the protective cavity can reliably blow off the welding slag, that is, it can ensure good welding slag cleaning efficiency and improve the efficiency of welding slag cleaning.

[0017] In an optional implementation, the first end of the protective sleeve is provided with an internal thread.

[0018] This design allows for a reliable threaded connection with the welding torch using the internal thread, ensuring easy removal of the protective sleeve from the welding torch.

[0019] In an optional embodiment, the inner wall of the protective sleeve is provided with a non-stick layer.

[0020] By setting a non-stick layer, the adhesion of welding slag to the protective sleeve can be reduced. On the one hand, this directly reduces the amount of welding slag, and on the other hand, it ensures that the airflow can more reliably blow off the loosely attached welding slag, thus ensuring the reliability and efficiency of welding slag cleaning.

[0021] In an optional embodiment, the inner wall of the protective sleeve is provided with at least two non-stick layers.

[0022] This design ensures that the inner wall of the protective sleeve has reliable non-stick properties, reducing the adhesion of welding slag and ensuring that the welding slag adhering to the inner wall of the protective sleeve is easily blown off and cleaned.

[0023] In an optional embodiment, the welding protective sleeve further includes a first air valve, which is disposed in the air pipe and is used to open or close the air pipe.

[0024] The first gas valve is designed to allow for the opening and closing of the gas pipe as needed, thus preventing the gas pipe from interfering with normal welding operations.

[0025] Secondly, this utility model provides a welding device, including: a welding torch and a welding protective sleeve according to any of the foregoing embodiments. The welding torch includes a connector and a conductive nozzle connected to the connector. The protective sleeve is connected to the connector, and the conductive nozzle is disposed in the protective cavity.

[0026] By blowing air into the protective chamber through the air pipe, the welding slag adhering to the protective sleeve and contact nozzle can be blown off and cleaned, thereby reducing the frequency of shutdown for cleaning welding slag. Moreover, timely cleaning of welding slag by the airflow from the air pipe can also effectively improve the problem of welding slag falling onto the workpieces to be welded later, thus ensuring that the workpieces to be welded later have a good appearance and reliable welding quality.

[0027] At the same time, the airflow blown into the protective chamber through the air tube can also cool down the protective sleeve and conductive nozzle, which helps to extend the service life of the protective sleeve and conductive nozzle and greatly improves the welding production quality.

[0028] In an optional embodiment, the pores are distributed opposite to the junctions of the connector and the conductive nozzle.

[0029] This setup allows for more reliable cleaning of welding slag adhering to the protective sleeve and conductive nozzle. On the one hand, it reduces the frequency of downtime for cleaning welding slag, and on the other hand, it reliably reduces the amount of welding slag falling onto subsequent welded workpieces, ensuring that the subsequently welded workpieces have a good appearance and improving the quality of the welding.

[0030] In an optional embodiment, the welding equipment further includes an air inlet pipe and a second air valve, the second air valve being disposed in the air inlet pipe, and the air inlet end being connected to an air source through the air inlet pipe.

[0031] The second gas valve is designed to allow for the opening and closing of the gas pipe as needed, thus preventing the gas pipe from interfering with normal welding operations. Attached Figure Description

[0032] Figure 1 This is a partial structural cross-sectional view of the welding equipment in an embodiment of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100-Welding protective sleeve; 110-Protective sleeve; 111-Protective cavity; 112-Air hole; 120-Air pipe; 121-Air outlet; 122-Air inlet; 200-Welding torch; 210-Connector; 220-Conductive nozzle; 230-Air inlet pipe; 240-Pipe connector; 300-Welding wire. Detailed Implementation

[0035] Welding equipment typically feeds welding wire through a contact tip for welding. To prevent the welding effect from being affected by air, a protective sleeve is usually added to the outside of the contact tip to blow out a protective gas inside the sleeve. This protective gas helps to mitigate the impact of air on the welding quality.

[0036] During welding, weld slag will splatter and adhere to the protective sleeve and contact tip; therefore, it is necessary to stop the machine regularly to clean the weld slag. Frequent shutdowns for slag cleaning will reduce production efficiency. If the weld slag is not cleaned in time, it will accumulate and easily fall onto the welding surface of subsequent workpieces under its own weight, causing not only poor appearance but also reduced welding quality.

[0037] To address the aforementioned issues, this embodiment provides a novel welding protective sleeve for welding equipment, enabling timely cleaning of welding slag and reducing the frequency of equipment downtime for cleaning, thereby improving welding production efficiency. Furthermore, by cleaning welding slag promptly and reliably, it reduces the amount of slag falling onto subsequent welded workpieces, thus improving the appearance and welding quality of the workpieces being welded. Simultaneously, it extends the service life of the protective sleeve and the conductive nozzle, significantly improving the quality of welding production.

[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] Please refer to Figure 1 This embodiment provides a welding device, which includes a welding torch 200 and a welding protective sleeve 100. The welding torch 200 includes a connector 210 and a conductive nozzle 220 connected to the connector 210. The conductive nozzle 220 is used to set and deliver welding wire 300. The welding protective sleeve 100 includes a protective sleeve 110, which has a protective cavity 111. The protective sleeve 110 is connected to the connector 210 and the conductive nozzle 220 is disposed in the protective cavity 111.

[0040] The principle of the conductive tip 220 feeding out the welding wire 300 and the principle of using the protective sleeve 110 to provide protective gas are similar to related technologies and will not be elaborated here.

[0041] Optionally, the protective sleeve 110 has a first end and a second end distributed along its length, and a protective cavity 111 passes through the first end and the second end of the protective sleeve 110; the first end of the protective sleeve 110 is connected to the welding torch 200, specifically, the first end of the protective sleeve 110 is connected to the connector 210; the conductive nozzle 220 extends from the second end of the protective sleeve 110 so that the welding wire 300 is exposed from the second end of the protective sleeve 110 (i.e., extends out of the second end of the protective sleeve 110). In this way, it can be ensured that the welding wire 300 delivered by the conductive nozzle 220 reliably extends out of the protective sleeve 110, thereby ensuring the reliability of the welding.

[0042] Alternatively, please refer to Figure 1 The distance H between the end of the conductive tip 220 extending from the second end of the protective sleeve 110 and the end of the second end of the protective sleeve 110 is 3mm; thus, the protective sleeve 110 can provide reliable protection for welding.

[0043] Of course, in other embodiments, the distance between the end of the conductive nozzle 220 extending out of the second end of the protective sleeve 110 and the end of the second end of the protective sleeve 110 can be less than 3mm, for example: 2mm, 1mm, etc.

[0044] Alternatively, in other embodiments, the conductive nozzle 220 does not extend beyond the second end of the protective sleeve 110. For example, the distance between one end of the conductive nozzle 220 and the end of the second end of the protective sleeve 110 is 0 mm, or one end of the conductive nozzle 220 is recessed into the protective cavity 111 relative to the end of the second end of the protective sleeve 110, and the distance between one end of the conductive nozzle 220 and the end of the second end of the protective sleeve 110 is greater than 0 mm and less than or equal to 3 mm.

[0045] The connection method between the protective sleeve 110 and the connector 210 can be selected as needed. In this embodiment, the protective sleeve 110 and the connector 210 are threaded together. For example, the first end of the protective sleeve 110 is provided with an internal thread, and the connector 210 is provided with an external thread, so as to achieve threaded connection through the internal and external threads. This facilitates the disassembly and assembly of the protective sleeve 110, ensuring ease of operation for installation, disassembly, and maintenance.

[0046] Of course, in other embodiments, the connection between the protective sleeve 110 and the connector 210 can also be welding, snap-fitting, etc., which are not specifically limited here.

[0047] To efficiently and reliably remove welding slag and reduce the frequency of downtime for slag removal, please refer to... Figure 1 The welding protective sleeve 100 in this embodiment also includes an air pipe 120; the side wall of the protective sleeve 110 is provided with an air hole 112 communicating with the protective cavity 111, and the air pipe 120 has an air outlet end 121 and an air inlet end 122 distributed along its length extension direction. The air pipe 120 is connected to the protective sleeve 110, and the air outlet end 121 communicates with the air hole 112. The air inlet end 122 is used to connect to an air source, and the air pipe 120 is used to blow air into the protective cavity 111.

[0048] By blowing air into the protective cavity 111 through the air pipe 120, the welding slag adhering to the protective sleeve 110 and the conductive nozzle 220 can be blown off and cleaned, thereby reducing the frequency of shutdown for cleaning welding slag. Moreover, timely cleaning of welding slag by the airflow blown out by the air pipe 120 can also effectively improve the problem of welding slag falling onto the workpieces to be welded later, thereby ensuring that the workpieces to be welded later have a good appearance and reliable welding quality.

[0049] At the same time, the airflow blown into the protective cavity 111 by the air pipe 120 can also cool down the protective sleeve 110 and the conductive nozzle 220, which helps to extend the service life of the protective sleeve 110 and the conductive nozzle 220 and greatly improves the welding production quality.

[0050] Optionally, the air outlet 121 is inserted into the air hole 112, and the end of the air outlet 121 is flush with the inner wall of the protective sleeve 110. Of course, in other embodiments, the end of the air outlet 121 may also be configured to be retracted into the air hole 112 relative to the inner wall of the protective sleeve 110.

[0051] By ensuring that the outlet end 121 of the gas pipe 120 does not extend into the protective cavity 111 of the protective sleeve 110, the protective sleeve 110 will not be interfered with by the gas pipe 120 when it is installed on the welding torch 200 of the welding equipment, which is beneficial to improving the efficiency of installing the protective sleeve 110 on the welding torch 200.

[0052] The connection method between the air tube 120 and the protective sleeve 110 can be selected as needed; in this embodiment, the air tube 120 and the protective sleeve 110 are welded; in this way, the stability and reliability of the connection between the air tube 120 and the protective sleeve 110 can be ensured.

[0053] Of course, in other embodiments, the connection between the air tube 120 and the protective sleeve 110 can also be integrally formed or threaded (for example, the air tube 120 is threadedly connected to the protective sleeve 110 through the air hole 112).

[0054] Optionally, the axis of the vent 112 is distributed at an acute angle to the direction from the first end of the protective sleeve 110 to the second end of the protective sleeve 110. This arrangement allows the gas blown into the protective cavity 111 through the vent 112 to flow obliquely toward the second end of the protective sleeve 110, so as to reliably blow off and remove the welding slag, that is, to ensure good welding slag cleaning efficiency and improve the efficiency of welding slag cleaning.

[0055] The angle between the axis of the vent 112 and the direction from the first end of the protective sleeve 110 to the second end of the protective sleeve 110 can be selected as needed, such as 85°, 83°, 80°, 75°, 65°, etc., and is not specifically limited here.

[0056] Alternatively, please refer to Figure 1 The direction from the air inlet 122 of the air pipe 120 to the air outlet 121 is at an acute angle to the direction from the first end of the protective sleeve 110 to the second end of the protective sleeve 110. This arrangement further ensures that the gas can be blown into the protective cavity 111 at an angle toward the second end of the protective cavity 111, which helps to ensure that the gas blown into the protective cavity 111 can reliably blow off the welding slag, that is, it can ensure good welding slag cleaning efficiency and improve the efficiency of welding slag cleaning.

[0057] The angle between the direction of the air inlet 122 of the air tube 120 pointing to the air outlet 121 and the direction of the first end of the protective sleeve 110 pointing to the second end of the protective sleeve 110 can be selected as needed, such as 86°, 82°, 79°, 73°, 60°, etc., and is not specifically limited here.

[0058] Of course, in other embodiments, only the air hole 112 can be inclined, or only the air pipe 120 can be inclined relative to the protective sleeve 110. That is, only the axis of the air hole 112 can be set to form an acute angle with the direction from the first end of the protective sleeve 110 to the second end of the protective sleeve 110, or only the direction from the air inlet end 122 of the air pipe 120 to the air outlet end 121 can be set to form an acute angle with the direction from the first end of the protective sleeve 110 to the second end of the protective sleeve 110.

[0059] Alternatively, please refer to Figure 1 The vents 112 are distributed relative to the joints 210 and the conductive nozzle 220. This arrangement allows for more reliable cleaning of the welding slag attached to the protective sleeve 110 and the conductive nozzle 220. On the one hand, it reduces the frequency of shutdown for cleaning welding slag, and on the other hand, it reliably reduces the amount of welding slag falling onto subsequent welded workpieces, thereby ensuring that the subsequently welded workpieces have a good appearance and improving the quality of welding.

[0060] Of course, in other embodiments, the vent 112 may also be distributed opposite to the lower part of the joint between the connector 210 and the conductive nozzle 220, or the vent 112 may also be distributed opposite to the upper part of the joint between the connector 210 and the conductive nozzle 220.

[0061] Optionally, the inner wall of the protective sleeve 110 is provided with a non-stick layer (not shown in the figure), such as a Teflon coating. By providing a non-stick layer, the adhesion of welding slag to the protective sleeve 110 can be reduced. On the one hand, this directly reduces the amount of welding slag adhering to it, and on the other hand, it ensures that the airflow can more reliably blow off the loosely attached welding slag, thus ensuring the reliability and efficiency of welding slag cleaning.

[0062] Optionally, the inner wall of the protective sleeve 110 is provided with at least two non-stick layers. This arrangement ensures that the inner wall of the protective sleeve 110 has reliable non-stick properties, thereby reducing the adhesion of welding slag and ensuring that the welding slag adhering to the inner wall of the protective sleeve 110 is easily blown off and cleaned.

[0063] For example, the inner wall of the protective sleeve 110 is provided with two non-stick layers, and the method for preparing the two non-stick layers includes: spraying the non-stick coating layer onto the inner wall of the protective sleeve 110 twice.

[0064] The thickness of the non-stick layer can be selected as needed. Optionally, the thickness of the non-stick layer is 0.01-0.02mm (commonly known as 1-2 mils).

[0065] Of course, in other embodiments, the number of non-stick layers on the inner wall of the protective sleeve 110 can be one, three, etc., and no specific limitation is made here.

[0066] Optionally, the welding protective sleeve 100 also includes a first air valve (not shown in the figure), which is disposed on the air pipe 120 for opening or closing the air pipe 120. The first air valve is provided to facilitate opening and closing the air pipe 120 as needed, so as to avoid the air pipe 120 interfering with the normal welding process.

[0067] Optionally, the welding equipment also includes an air inlet pipe 230 and a second air valve (not shown in the figure). The second air valve is located in the air inlet pipe 230, and the air inlet end 122 is connected to the air source through the air inlet pipe 230. The second air valve allows for the opening and closing of the air pipe 120 as needed, so as to avoid the air pipe 120 interfering with the normal welding process.

[0068] Optionally, both the first and second air valves are solenoid valves, and both can communicate with the controller of the welding equipment to control the opening and closing of the first and second air valves. For example, during welding, the controller controls the first and second air valves to close, and after welding, the controller controls the first and second air valves to open to continuously blow air for 1-2 seconds, and then controls the first and second air valves to close to perform the next welding cycle.

[0069] It should be understood that in other embodiments, only the first air valve may be provided in the air pipe 120, or only the second air valve may be provided in the air inlet pipe 230.

[0070] Optionally, (not shown in the figure) the welding equipment also includes a pipe joint 240, through which the air inlet pipe 230 and the air inlet end 122 of the air pipe 120 are connected. The connection methods between the pipe joint 240 and the air inlet pipe 230 and the air pipe 120 include, but are not limited to, threaded connection, plug connection, and snap connection.

[0071] Optionally, the pipe connector 240 can also be fixedly connected to one of the air intake pipe 230 and the air intake end 122 of the air pipe 120, for example, by welding, integral molding, etc., and the pipe connector 240 can be detachably connected to the other of the air intake pipe 230 and the air intake end 122 of the air pipe 120, for example, by threaded connection, plug connection, etc.

[0072] After welding, the welding equipment in this embodiment can blow air into the protective cavity 111 of the protective sleeve 110 through the air pipe 120 to remove the welding slag attached to the protective sleeve 110 and the conductive nozzle 220 by means of airflow.

[0073] In summary, the welding equipment of this invention utilizes the air pipe 120 connected to the protective sleeve 110 to blow air and remove welding slag. This allows for timely cleaning of welding slag, reducing the frequency of welding equipment downtime and improving welding production efficiency. Furthermore, it addresses the problem of welding slag not being cleaned in time and falling onto subsequent workpieces, leading to poor appearance and reduced welding quality. Simultaneously, blowing air into the protective cavity 111 via the air pipe 120 also cools the protective sleeve 110 and the conductive nozzle 220, extending their service life.

[0074] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A welding shield characterized by, include: A protective sleeve (110) having a protective cavity (111), and the sidewall of the protective sleeve (110) being provided with an air hole (112) communicating with the protective cavity (111); and, The air tube (120) has an air outlet (121) and an air inlet (122). The air tube (120) is connected to the protective sleeve (110), and the air outlet (121) is connected to the air hole (112). The air inlet (122) is used to connect to an air source. The air tube (120) is used to blow air into the protective cavity (111).

2. The welding boot of claim 1, wherein, The air outlet (121) is inserted into the air hole (112), and the end of the air outlet (121) is flush with the inner wall of the protective sleeve (110) or retracted into the air hole (112) relative to the inner wall of the protective sleeve (110).

3. The welding boot of claim 1, wherein, The protective sleeve (110) has a first end and a second end distributed along its length direction. The first end of the protective sleeve (110) is used to connect with the welding torch (200), and the second end of the protective sleeve (110) is used to expose the welding wire (300). The direction from the air inlet (122) to the air outlet (121) forms an acute angle with the direction from the first end of the protective sleeve (110) to the second end of the protective sleeve (110); and / or, The axis of the air hole (112) is distributed at an acute angle to the direction from the first end of the protective sleeve (110) to the second end of the protective sleeve (110).

4. The welding boot of claim 3, wherein, The first end of the protective sleeve (110) is provided with an internal thread.

5. The welding boot of claim 1, wherein, The inner wall of the protective sleeve (110) is provided with a non-stick layer.

6. The welding boot of claim 5, wherein, The inner wall of the protective sleeve (110) is provided with at least two layers of the non-stick layer.

7. The welding boot of any of claims 1-6, wherein, The welding protective sleeve also includes a first air valve, which is disposed on the air pipe (120) and is used to open or close the air pipe (120).

8. A welding apparatus characterized by comprising: include: The welding torch (200) and the welding protective sleeve according to any one of claims 1-7, wherein the welding torch (200) includes a connector (210) and a conductive nozzle (220) connected to the connector (210), the protective sleeve (110) is connected to the connector (210), and the conductive nozzle (220) is disposed in the protective cavity (111).

9. The welding apparatus of claim 8, wherein, The vent (112) is distributed opposite to the junction of the connector (210) and the conductive nozzle (220).

10. The welding apparatus of claim 8, wherein, The welding equipment also includes an air inlet pipe (230) and a second air valve, the second air valve being disposed in the air inlet pipe (230), and the air inlet end (122) being connected to an air source through the air inlet pipe (230).

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