A welding wire surfacing preheating mechanism

Abstract

The utility model discloses a kind of welding wire surfacing preheating mechanisms, it is related to welding technical field, the utility model includes connecting pipe, the connecting pipe inner wall is fixedly connected with welding torch, preheating mechanism is arranged on the welding torch, installation mechanism is arranged on the connecting pipe, the preheating mechanism includes connecting ring one, the connecting ring one outer surface is fixedly connected with support rod, the end of support rod away from connecting ring one is fixedly connected with connecting ring two, the utility model is provided with jet valve, pipeline will be mixed gas sent to heater and heated, after mixed gas heating is completed, jet valve is started again, at this time, mixed gas will be jetted out by jet valve through breather pipe, welding wire is preheated, by the jet valve that can jet mixed gas, it reaches that welding wire can be preheated before welding, can ensure that the temperature of welding area is more uniform, reduce the risk of cold crack, improve the melting speed and surfacing efficiency of welding wire, reduce the effect of welding defect.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, and in particular relates to a preheating mechanism for welding wire overlay. Background Technology

[0002] A wire surfacing preheating mechanism is a device or system typically used in surfacing processes to preheat the welding area or welding wire. It can heat the welding wire or workpiece to control and optimize the welding temperature to ensure welding quality and the stability of the welding process.

[0003] If the welding wire is not preheated before welding, it may develop cold cracks due to low temperature during the welding process, which will affect the melting speed and welding efficiency of the welding wire and increase the risk of welding defects. Therefore, we propose a welding wire welding preheating mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a preheating mechanism for welding wire surfacing. A mixed gas is sent into a heater through a pipeline, and then the heater heats the mixed gas. Finally, the gas is sprayed onto the welding wire by a jet valve, which solves the problem of preheating the welding wire before welding.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a welding wire surfacing preheating mechanism, including a connecting pipe, a welding gun fixedly connected to the inner wall of the connecting pipe, a preheating mechanism provided on the welding gun, and an installation mechanism provided on the connecting pipe;

[0007] The preheating mechanism includes a first connecting ring, a support rod fixedly connected to the outer surface of the first connecting ring, a second connecting ring fixedly connected to the end of the support rod away from the first connecting ring, a pipe slidably connected to the inner wall of the second connecting ring, an installation ring fixedly connected to the outer surface of the pipe, a heater slidably connected to the outer surface of the pipe, a bolt threadedly connected to the inner wall of the installation ring, a vent pipe fixedly connected to the inner wall of the heater, a jet valve fixedly connected to the end of the vent pipe away from the heater, a limit frame fixedly connected to the outer surface of the jet valve, and an extension plate fixedly connected to the bottom of the limit frame.

[0008] Furthermore, the inner wall of the connecting ring is fixedly connected to the outer surface of the welding gun, and a total of several bolts are provided.

[0009] Furthermore, the outer surface of the bolt is threaded to the inner wall of the heater, and the top of the extension plate is fixedly connected to the bottom of the jet valve.

[0010] Furthermore, the installation mechanism includes a fixing ring fixedly connected to the outer surface of the welding torch. There are two fixing rings in total. A base is fixedly connected to the outer surface of the fixing ring. A fixing frame is fixedly connected to the top of the base. A sliding groove is provided inside the fixing frame.

[0011] Furthermore, there are two slide grooves, and slide bars are slidably connected to the inner wall of the slide grooves. A mounting plate is fixedly connected to the side of the slide bars that are close to each other, and a limit strip is slidably connected to the outer surface of the fixed frame.

[0012] Furthermore, the outer surface of the limiting strip is in contact with the outer surface of the mounting plate, and two bolts are threadedly connected to the inner wall of the limiting strip. The outer surface of the bolts is threadedly connected to the inner wall of the fixing frame, and a plug is inserted into the inner wall of the slide bar.

[0013] Furthermore, there are two insert blocks. The end of the insert block away from the slide bar is fixedly connected to a slide rod. An L-shaped block is slidably connected to the outer surface of the slide rod. The outer surface of the L-shaped block is fixedly connected to the outer surface of the fixed frame.

[0014] Furthermore, a spring is fixedly connected to the outer surface of the insert block, and the end of the spring away from the insert block is fixedly connected to the outer surface of the L-shaped block. The inner side of the spring is sleeved with the outer surface of the slide rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates an air jet valve. The pipeline delivers the mixed gas to the heater for heating. Once the mixed gas is heated, the air jet valve is activated, and the mixed gas is ejected through the vent pipe by the air jet valve to preheat the welding wire. By using the air jet valve to eject the mixed gas, the welding wire can be preheated before welding, ensuring a more uniform temperature in the welding area, reducing the risk of cold cracking, increasing the melting speed and welding efficiency of the welding wire, and reducing welding defects.

[0017] 2. This utility model incorporates a sliding bar. By unscrewing the bolt two from the limiting strip and the fixing frame, and then removing the limiting strip, the sliding rod can be pulled in a direction away from each other, allowing it to slide within the L-shaped block. This sliding rod will then move the insert block. The sliding bar, which can slide within the fixing frame, facilitates the disassembly and maintenance of the heater and jet valve, enabling the timely detection of potential problems and preventing the accumulation of faults due to prolonged use, thereby extending the service life of the equipment.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the preheating mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the pipeline structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the fixed frame structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the slider structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the slide bar structure of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 101. Connecting pipe; 102. Welding torch; 2. Preheating mechanism; 201. Connecting ring one; 202. Support rod; 203. Connecting ring two; 204. Pipe; 205. Mounting ring; 206. Heater; 207. Bolt one; 208. Vent pipe; 209. Air valve; 210. Limiting frame; 211. Extension plate; 3. Mounting mechanism; 301. Fixing ring; 302. Base; 303. Fixing frame; 304. Slide groove; 305. Slide bar; 306. Mounting plate; 307. Limiting bar; 308. Bolt two; 309. Insert block; 310. Slide rod; 311. Spring; 312. L-shaped block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6As shown, this utility model is a welding wire surfacing preheating mechanism, including a connecting pipe 101, a welding gun 102 fixedly connected to the inner wall of the connecting pipe 101, a preheating mechanism 2 provided on the welding gun 102, and an installation mechanism 3 provided on the connecting pipe 101.

[0030] The preheating mechanism 2 includes a connecting ring 201. This mechanism first heats a mixed gas, such as hydrogen, propane, and natural gas, and then sprays the mixed gas onto the welding wire for preheating. A support rod 202 is fixedly connected to the outer surface of the connecting ring 201. A connecting ring 203 is fixedly connected to the end of the support rod 202 away from the connecting ring 201. A pipe 204 is slidably connected to the inner wall of the connecting ring 203. An installation ring 205 is fixedly connected to the outer surface of the pipe 204, allowing the pipe 204 to slide within the connecting ring 203 and its position to be changed, facilitating the subsequent removal of the preheating mechanism 2 from the installation mechanism 3 for maintenance. A heater 206 is slidably connected to the outer surface of the pipe 204. A bolt 207 is threadedly connected to the inner wall of the installation ring 205. A vent pipe 208 is fixedly connected to the inner wall of the heater 206. A jet valve 209 is fixedly connected to the end of the vent pipe 208 away from the heater 206. 204 sends the mixed gas into heater 206 for heating. Then, the jet valve 209 sprays the gas from heater 206 through vent pipe 208 to preheat the surface of the welding wire. A limit frame 210 is fixedly connected to the outer surface of the jet valve 209. An extension plate 211 is fixedly connected to the bottom of the limit frame 210. The inner wall of the connecting ring 201 is fixedly connected to the outer surface of the welding torch 102. The extension plate 211 supports the jet valve 209, ensuring that the position of the jet valve 209 does not change during operation, thus enabling more stable preheating of the welding wire. Several bolts 207 are provided. The outer surface of bolt 207 is threaded to the inner wall of heater 206. The top of the extension plate 211 is fixedly connected to the bottom of jet valve 209. Bolt 207 can install pipe 204 on heater 206, so that gas can be stably sent into heater 206 to stably heat the mixed gas and ensure the normal operation of the mechanism.

[0031] The mounting mechanism 3 includes two fixing rings 301 fixedly connected to the outer surface of the welding torch 102. A base 302 is fixedly connected to the outer surface of each fixing ring 301, and a fixing frame 303 is fixedly connected to the top of the base 302. The fixing rings 301 fix the position of the base 302, ensuring stable support for both the preheating mechanism 2 and the mounting mechanism 3 during operation. Two sliding grooves 304 are provided inside the fixing frame 303. Sliding strips 305 are slidably connected to the inner wall of each sliding groove 304. A mounting plate 306 is fixedly connected to the side of the sliding strips 305 that are close to each other. The sliding grooves 304 restrict the movement trajectory of the sliding strips 305, ensuring that the sliding strips 305 can only slide within the sliding grooves 304. To ensure the preheating mechanism 2 can be smoothly disassembled from the installation mechanism 3, a limiting strip 307 is slidably connected to the outer surface of the fixed frame 303. The outer surface of the limiting strip 307 contacts the outer surface of the mounting plate 306. A bolt 308 is threadedly connected to the inner wall of the limiting strip 307. The limiting strip 307 can fix the position of the slide bar 305 to prevent the slide bar 305 from sliding in the slide groove 304 after installation, ensuring that the mechanism can operate normally. Two bolts 308 are provided. The outer surface of the bolt 308 is threadedly connected to the inner wall of the fixed frame 303. An insert block 309 is inserted into the inner wall of the slide bar 305. The bolts 308 fix the limiting strip 307 to prevent the limiting strip 307 from falling off the mechanism due to shaking or other reasons, ensuring that the limiting strip 307 can always play its role.

[0032] Two insert blocks 309 are provided. The end of the insert block 309 away from the slide bar 305 is fixedly connected to the slide rod 310. An L-shaped block 312 is slidably connected to the outer surface of the slide rod 310. The outer surface of the L-shaped block 312 is fixedly connected to the outer surface of the fixed frame 303. The slide rod 310 can be pulled, causing the slide rod 310 to drive the insert block 309 to move, allowing the insert block 309 to disengage from the slide bar 305. This allows the preheating mechanism 2 to be disassembled from the installation mechanism 3. A spring 311 is fixedly connected to the outer surface of the insert block 309. The end of the spring 311 away from the insert block 309 is fixedly connected to the outer surface of the L-shaped block 312. The inner side of the spring 311 is sleeved with the outer surface of the slide rod 310. The slide rod 310 restricts the movement trajectory of the spring 311, so that the spring 311 can only be stretched or rebound along the slide rod 310, thereby ensuring that the insert block 309 can position and lock the slide bar 305.

[0033] One specific application of this embodiment is:

[0034] When the equipment is needed, the welding wire is first preheated by the preheating mechanism 2. At this time, the pipe 204 will send the mixed gas to the heater 206 for heating. After the mixed gas is heated, the jet valve 209 is activated. The mixed gas will then be sprayed out by the jet valve 209 through the vent pipe 208 to preheat the welding wire. This allows the welding wire to be preheated before welding, ensuring a more uniform temperature in the welding area, reducing the risk of cold cracking, improving the melting speed and welding efficiency of the welding wire, and reducing welding defects. When the heater 206 and the jet valve 209 need to be maintained, the bolt 207 can be unscrewed from the mounting ring 205 and the heater 206, and the pipe 204 can be pulled out from the heater 206. Then, the bolt 308 can be rotated to unscrew the bolt 308 from the limit strip 307 and the fixing frame 303. Then, remove the limiting strip 307. At this time, the slide bar 310 can be pulled in a direction away from each other, so that the slide bar 310 slides in the L-shaped block 312. At this time, the slide bar 310 will drive the insert block 309 to move, so that the insert block 309 will disengage from the slide bar 305. At the same time, the insert block 309 will also squeeze the spring 311. Then, the jet valve 209 will be pulled towards the heater 206. At this time, the jet valve 209 will drive the extension plate 211 to move, and then the extension plate 211 will drive the mounting plate 306 to move, so that the preheating mechanism 2 can be moved out of the mounting mechanism 3. Then the heater 206 and the jet valve 209 can be maintained. This achieves the effect of conveniently disassembling the heater 206 and the jet valve 209 for maintenance, which can promptly detect potential problems, avoid the accumulation of faults due to long-term use, and thus extend the service life of the equipment.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wire surfacing preheating mechanism, comprising a connecting pipe (101), characterized in that: A welding torch (102) is fixedly connected to the inner wall of the connecting pipe (101), a preheating mechanism (2) is provided on the welding torch (102), and an installation mechanism (3) is provided on the connecting pipe (101); The preheating mechanism (2) includes a connecting ring one (201), a support rod (202) is fixedly connected to the outer surface of the connecting ring one (201), a connecting ring two (203) is fixedly connected to the end of the support rod (202) away from the connecting ring one (201), a pipe (204) is slidably connected to the inner wall of the connecting ring two (203), an installation ring (205) is fixedly connected to the outer surface of the pipe (204), a heater (206) is slidably connected to the outer surface of the pipe (204), a bolt one (207) is threadedly connected to the inner wall of the installation ring (205), a vent pipe (208) is fixedly connected to the inner wall of the heater (206), a jet valve (209) is fixedly connected to the end of the vent pipe (208) away from the heater (206), a limit frame (210) is fixedly connected to the outer surface of the jet valve (209), and an extension plate (211) is fixedly connected to the bottom of the limit frame (210).

2. The wire surfacing preheating mechanism according to claim 1, characterized in that, The inner wall of the connecting ring (201) is fixedly connected to the outer surface of the welding gun (102), and a total of several bolts (207) are provided.

3. The wire surfacing preheating mechanism according to claim 1, characterized in that, The outer surface of the bolt (207) is threaded to the inner wall of the heater (206), and the top of the extension plate (211) is fixedly connected to the bottom of the jet valve (209).

4. The wire surfacing preheating mechanism according to claim 1, characterized in that, The installation mechanism (3) includes a fixing ring (301) fixedly connected to the outer surface of the welding torch (102). There are two fixing rings (301). A base (302) is fixedly connected to the outer surface of the fixing ring (301). A fixing frame (303) is fixedly connected to the top of the base (302). A sliding groove (304) is opened inside the fixing frame (303).

5. The wire surfacing preheating mechanism according to claim 4, characterized in that, Two slide grooves (304) are provided. Slide strips (305) are slidably connected to the inner wall of the slide grooves (304). Mounting plates (306) are fixedly connected to the side of the slide strips (305) that are close to each other. Limiting strips (307) are slidably connected to the outer surface of the fixing frame (303).

6. The wire surfacing preheating mechanism according to claim 5, characterized in that, The outer surface of the limiting strip (307) is in contact with the outer surface of the mounting plate (306). The inner wall of the limiting strip (307) is threaded with bolt two (308). There are two bolt two (308). The outer surface of the bolt two (308) is threaded with the inner wall of the fixing frame (303). The inner wall of the slide bar (305) is inserted with a plug (309).

7. The wire surfacing preheating mechanism according to claim 6, characterized in that, Two inserts (309) are provided. A slide rod (310) is fixedly connected to one end of the insert (309) away from the slide bar (305). An L-shaped block (312) is slidably connected to the outer surface of the slide rod (310). The outer surface of the L-shaped block (312) is fixedly connected to the outer surface of the fixed frame (303).

8. The wire surfacing preheating mechanism according to claim 6, characterized in that, A spring (311) is fixedly connected to the outer surface of the insert (309). One end of the spring (311) away from the insert (309) is fixedly connected to the outer surface of the L-shaped block (312). The inner side of the spring (311) is sleeved with the outer surface of the slide rod (310).

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