Metal welding equipment facilitating manual operation

Abstract

The invention relates to the field of welding equipment, in particular to metal welding equipment convenient for manual operation, which comprises a welding gun, a conductive sleeve, a welding nozzle and the like, the welding gun is fixedly connected with a conductive sleeve; and the welding gun is connected with a welding nozzle. In the welding process, the blocking state of the first through hole and the second through hole can be changed by rotating the adjusting ring, so that protective gas is blown out from the first gas outlet and the second gas outlet at the same time, the coverage range of the protective gas is widened, and before welding and after welding, the blocking state of the first through hole and the second through hole is changed by rotating the adjusting ring, so that the welding efficiency is improved. Air is blown out from the first air outlet and the second air outlet at the same time, the blowing effect of air flow on impurities and welding slag on the surface of a metal workpiece is improved, the cleaning efficiency of dust, impurities and welding slag in holes, cracks and corners is improved, workers do not need to frequently replace tools during welding operation, and therefore the tool is suitable for different welding conditions; and the welding convenience is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of welding equipment, and particularly to a metal welding equipment convenient for manual operation. Background Art

[0002] Flux-cored arc welding, also known as carbon dioxide gas shielded arc welding, is a widely used arc welding method. It uses carbon dioxide ( ) as a shielding gas to prevent the molten metal from reacting with oxygen, nitrogen, etc. in the air during the welding process, thereby ensuring the welding quality; When workers use a flux-cored arc welding gun for welding, they need to replace different welding nozzles for welding operations according to different welding situations. When performing normal welding operations, small welding nozzles are often used for welding, so that the shielding gas is more concentratedly blown to the welding area, improving the shielding effect. At the same time, using small welding nozzles can limit the outflow of the shielding gas and save costs. When encountering a situation with a large weld seam, a large welding nozzle needs to be replaced to increase the coverage area of the shielding gas and improve the shielding effect. As a result, workers need to frequently switch tools during welding operations, which is cumbersome and affects work efficiency; Furthermore, during the welding operation process, since the welding nozzle will frequently contact the surface of the workpiece, the welding nozzle will be worn, aged, etc., affecting the service life of the welding nozzle. Summary of the Invention

[0003] In order to overcome the disadvantages that workers need to frequently switch tools according to welding requirements during welding work, which is cumbersome and affects work efficiency, the present invention provides a metal welding equipment convenient for manual operation.

[0004] Technical Solution: A metal welding equipment convenient for manual operation includes a welding gun, a conductive sleeve, and a welding nozzle; a conductive sleeve is fixedly connected to the welding gun; a welding nozzle is connected to the welding gun; it further includes a sleeve, a drainage sleeve, and an adjusting ring; two air flow channels are provided on the welding gun; a sleeve is fixedly connected to the outside of the conductive sleeve; a plurality of first through holes and a plurality of second through holes are opened in the sleeve, all the first through holes are communicated with one of the flow channels on the welding gun, and all the second through holes are communicated with the other flow channel on the welding gun; all the first through holes are communicated with the first air outlet in the welding nozzle; a drainage sleeve is connected to the sleeve, and the end of the drainage sleeve far from the sleeve is in an outward-expanded shape; the drainage sleeve is located outside the welding nozzle; a second air outlet is formed between the welding nozzle and the drainage sleeve; all the second through holes are communicated with the second air outlet; an adjusting ring for adjusting the air flow is rotatably connected to the sleeve; the adjusting ring is composed of a first sealing portion, a second sealing portion, and a third sealing portion; a first rotating groove and a second rotating groove are opened in the sleeve, and the first rotating groove and the second rotating groove are communicated; the second rotating groove, the first through hole, and the second through hole are communicated; the first sealing portion of the adjusting ring rotates in the second rotating groove, and the second sealing portion and the third sealing portion of the adjusting ring rotate in the first rotating groove.

[0005] More preferably, it further includes a rotating ring and a pin rod; the outer ring surface of the sleeve is rotatably connected with the rotating ring, and the rotating ring is fixedly connected with the adjusting ring; two fixing holes are provided on the outer ring surface of the sleeve; the pin rod is inserted into the rotating ring, and the diameter of the pin rod is the same as that of the fixing hole.

[0006] More preferably, both the sleeve and the drainage sleeve are made of insulating materials.

[0007] More preferably, both the welding nozzle and the drainage sleeve are threadedly connected to the sleeve.

[0008] More preferably, it further includes heat conducting sheets; a plurality of heat conducting sheets are annularly arrayed inside the sleeve; each heat conducting sheet passes through a corresponding first through hole and a second through hole and then contacts the outer surface of the conductive sleeve.

[0009] More preferably, it further includes a filter screen; filter screens are fixedly connected to one ends of all the first through holes and the second through holes close to the welding nozzle and the drainage sleeve.

[0010] More preferably, it further includes balls; the lower side of the drainage sleeve is rotatably connected with balls.

[0011] More preferably, it further includes an alarm; a temperature sensor is arranged inside the sleeve; an alarm is fixedly connected to the welding torch.

[0012] More preferably, a rubber grip is arranged on the welding torch.

[0013] More preferably, a strap is arranged on the welding torch.

[0014] The present invention has the following advantages: During normal welding operations, the shielding gas can be blown into the welding position through the first air outlet, effectively isolating the harmful effects of oxygen, nitrogen, etc. in the air on the molten pool. Before and after the start and end of welding, the air can be blown out in a diffused state outside the welding position through the second air outlet to blow away the dust, impurities, and welding slag on the surface of the metal workpiece, achieving a cleaning effect, realizing the protection of the molten pool during the welding process and the cleaning of impurities before and after welding, and eliminating the need to use an additional cleaning device (air gun) to clean the impurities on the surface of the metal workpiece; During the welding process, by rotating the adjusting ring, the blocking states of the first through hole and the second through hole can be changed, enabling the shielding gas to be blown out from both the first air outlet and the second air outlet simultaneously, improving the coverage range of the shielding gas. Before and after welding, by rotating the adjusting ring, the blocking states of the first through hole and the second through hole are changed, enabling the air to be blown out from both the first air outlet and the second air outlet simultaneously, improving the blowing effect of the air flow on the impurities and welding slag on the surface of the metal workpiece, enhancing the cleaning efficiency of the dust, impurities, and welding slag in holes, cracks, and corner positions, enabling workers to avoid frequently changing tools during welding operations to adapt to different welding situations, and greatly improving the convenience of welding.

[0015] The present invention also has the following beneficial effects: Both the sleeve and the drainage sleeve are made of insulating materials, preventing current from entering the drainage sleeve and the welding nozzle, which may cause melting when the drainage sleeve and the welding nozzle come into contact with the welding plate. Heat-conducting sheets made of copper are provided in both the first through-hole and the second through-hole, and the heat-conducting sheets are in direct contact with the outer surface of the conductive sleeve. During the welding process, the heat generated by the conductive sleeve will be conducted to the heat-conducting sheets, and then when air and protective gas are blown out through the first through-hole and the second through-hole, the heat on the heat-conducting sheets can be carried out, improving the heat dissipation effect of the welding torch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the metal welding equipment convenient for manual operation of the present invention; Figure 2 is a welding state diagram of the welding torch of the present invention; Figure 3 is a combined cross-sectional view of the welding nozzle and the drainage sleeve of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the sleeve of the present invention; Figure 5 is a cross-sectional view of the sleeve of the present invention; Figure 6 is a combined cross-sectional view of the sleeve, the adjusting ring and the rotating ring of the present invention; Figure 7 is an exploded view of the metal welding equipment convenient for manual operation of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the adjusting ring of the present invention; Figure 9 is a rotating state diagram of the adjusting ring of the present invention.

[0017] Among them, the above-mentioned drawings include the following reference numerals: 1 - welding torch, 1001 - rubber grip, 1002 - strap, 2 - conductive sleeve, 3 - welding nozzle, 3001 - first air outlet, 101 - sleeve, 10101 - first through-hole, 10102 - second through-hole, 10103 - fixing hole, 10104 - first rotating groove, 10105 - second rotating groove, 102 - drainage sleeve, 10201 - second air outlet, 103 - adjusting ring, 10301 - first sealing part, 10302 - second sealing part, 10303 - third sealing part, 104 - rotating ring, 105 - pin rod, 106 - filter screen, 107 - heat-conducting sheet, 109 - ball, 201 - alarm, 555 - metal workpiece. DETAILED DESCRIPTION OF THE INVENTION

[0018] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and are not limited to restricting the scope of the present application. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0019] Embodiment 1 A metal welding device convenient for manual operation, as Figures 1-9 shown, includes a welding torch 1, a conductive sleeve 2 and a welding nozzle 3; the conductive sleeve 2 is fixedly connected to the welding torch 1; the welding nozzle 3 is connected to the welding torch 1, and the end of the welding nozzle 3 away from the welding torch 1 is in a flared shape; It also includes a sleeve 101, a diversion sleeve 102 and an adjusting ring 103; there are two air flow channels provided on the welding torch 1; the sleeve 101 is fixedly connected to the outside of the conductive sleeve 2; six first through holes 10101 and six second through holes 10102 are opened in the sleeve 101, all the first through holes 10101 are communicated with one of the flow channels on the welding torch 1, and all the second through holes 10102 are communicated with the other flow channel on the welding torch 1; all the first through holes 10101 are communicated with the first air outlet 3001 in the welding nozzle 3; the sleeve 101 is connected with the diversion sleeve 102, and the end of the diversion sleeve 102 away from the sleeve 101 is in an outward-expanded shape; the diversion sleeve 102 is located outside the welding nozzle 3; a second air outlet 10201 is formed between the welding nozzle 3 and the diversion sleeve 102; all the second through holes 10102 are communicated with the second air outlet 10201; the adjusting ring 103 is rotatably connected to the sleeve 101; the adjusting ring 103 is composed of a first sealing part 10301, a second sealing part 10302 and a third sealing part 10303; a first rotating groove 10104 and a second rotating groove 10105 are opened on the sleeve 101, and the first rotating groove 10104 and the second rotating groove 10105 are communicated; the second rotating groove 10105, the first through hole 10101 and the second through hole 10102 are communicated; the first sealing part 10301 of the adjusting ring 103 rotates in the second rotating groove 10105, and the second sealing part 10302 and the third sealing part 10303 of the adjusting ring 103 rotate in the first rotating groove 10104.

[0020] It also includes a rotating ring 104 and a plug rod 105; the outer ring surface of the sleeve 101 is rotatably connected with the rotating ring 104, and the rotating ring 104 is fixedly connected with the adjusting ring 103; two fixing holes 10103 are opened on the outer ring surface of the sleeve 101; the plug rod 105 is inserted into the rotating ring 104, and the diameter of the plug rod 105 is the same as the diameter of the fixing hole 10103.

[0021] Both the sleeve 101 and the diversion sleeve 102 are made of insulating materials to prevent current from flowing into the diversion sleeve 102 and the welding nozzle 3, resulting in melting when the diversion sleeve 102 and the welding nozzle 3 come into contact with the welding plate.

[0022] The welding tip 3 and the drainage sleeve 102 are both threadedly connected to the sleeve 101, which facilitates the removal of the welding tip 3 and the drainage sleeve 102 for cleaning.

[0023] It further includes a heat conducting sheet 107; a plurality of heat conducting sheets 107 are annularly arrayed in the sleeve 101, and the heat conducting sheets 107 are copper sheets; each heat conducting sheet 107 passes through a corresponding first through hole 10101 and a second through hole 10102 and then contacts the outer surface of the conductive sleeve 2.

[0024] It further includes a filter screen 106; filter screens 106 are fixedly connected to one ends of all the first through holes 10101 and the second through holes 10102 close to the welding tip 3 and the drainage sleeve 102, preventing the welding slag generated during welding from splashing into the first through holes 10101 and the second through holes 10102 and affecting the subsequent air flow.

[0025] The working principle of the above embodiment is as follows: First, the worker connects the power cord, the protective gas connecting pipe and the air connecting pipe to the welding torch 1, and then sets the current and voltage parameters. After completing the preparation work, the worker holds the welding torch 1 tightly and performs welding operations on the surface of the metal workpiece 555; when performing normal welding operations as Figures 3-6 shown: The first sealing portion 10301 of the adjusting ring 103 is located at the communication position of the second rotating groove 10105, the first through hole 10101 and the second through hole 10102. The first through hole 10101 and the second through hole 10102 are made not to communicate with each other through the first sealing portion 10301. At this time, the carbon dioxide gas is sent into the welding torch 1 through the protective gas connecting pipe by an external air pump. The protective gas is blown into the first air outlet 3001 through the first through hole 10101, and then blown into the welding position through the first air outlet 3001, isolating the harmful effects of oxygen, nitrogen, etc. in the air on the molten pool, reducing the generation of defects such as pores and slag inclusions in the weld seam, improving the welding effect, and the welding tip 3 is in a necked shape, so the first air outlet 3001 is in a necked shape, enabling the protective gas to be blown into the weld seam more concentratedly, improving the protection effect, and at the same time, the outflow amount of the protective gas can be restricted, saving costs.

[0026] Furthermore, at the beginning and end of welding, the worker can send air into the welding torch 1 through an external air pump, so that the air is ejected through the second through hole 10102 and the second air outlet 10201 to blow off the dust, impurities and welding slag on the surface of the metal workpiece 555; note that the second air outlet 10201 is in a flared shape, so that the air is ejected in a diffused state, increasing the blowing range and improving the cleaning efficiency.

[0027] In summary, by using the present invention, the protection of the molten pool during the welding process and the cleaning of impurities before and after welding can be realized, and there is no need to use an additional cleaning device (air gun) to clean the impurities on the surface of the metal workpiece 555.

[0028] During the welding process, when encountering a situation with a large weld seam, the worker can pull out the pin rod 105. Then, with the reference of looking from right to left, the worker rotates the rotating ring 104 clockwise by 30°. The adjusting ring 103 follows the rotating ring 104 and rotates clockwise by 30°. After the rotation is completed, the worker inserts the pin rod 105 into another fixing hole 10103 to fix the rotating ring 104 and the adjusting ring 103. At this time, as Figure 9 shown: The first sealing part 10301 is away from the connection of the second rotating groove 10105, the first through hole 10101, and the second through hole 10102. The three second sealing parts 10302 block the corresponding second through holes 10102, and the three third sealing parts 10303 block the corresponding first through holes 10101. Since the three second sealing parts 10302 and the three third sealing parts 10303 are staggeredly distributed, the first through hole 10101 and the second through hole 10102 are in a staggeredly blocked state; and as Figure 8 shown, since there is a distance between the rear sides of the second sealing part 10302 and the third sealing part 10303 and the rear side of the first sealing part 10301, that is, after the worker turns on the external air pump for supplying carbon dioxide shielding gas, at this time, the unblocked second through hole 10102 can blow the shielding gas into the first air outlet 3001 and spray it out normally, while the shielding gas in the second through hole 10102 blocked by the third sealing part 10303 will enter the first through hole 10101 and spray out from the second air outlet 10201, thereby expanding the coverage range of the shielding gas, enabling the worker to weld the metal workpiece 555 with a large weld seam without replacing the welding nozzle 3.

[0029] Furthermore, when blowing the dust impurities and welding slag on the surface of the metal workpiece 555 through the air blown out from the second air outlet 10201, the second air outlet 10201 is in an outward-expanded shape, and the blown air flow disperses outward. Although it can expand the cleaning range, the air flow impact force is insufficient, and it is difficult to clean the dust impurities and welding slag in some holes, cracks, and corners. Therefore, before and after welding, the worker can rotate the adjusting ring 103 clockwise by 30° to adjust the blocking state of the first through hole 10101 and the second through hole 10102. Then, start the external air pump to send air into the welding torch 1. At this time, the air will not only be blown out from the second air outlet 10201 but also from the first air outlet 3001. Therefore, the worker only needs to align the first air outlet 3001 with the dust impurities and welding slag in the holes, cracks, and corner positions to blow out the dust impurities and welding slag at the corners, ensuring the cleaning effect and efficiency.

[0030] In summary, by using the present invention, through the dynamic adjustment of the blocking state of the first through hole 10101 and the second through hole 10102, the worker can avoid frequently replacing tools during the welding operation to adapt to different welding situations, greatly improving the convenience of welding.

[0031] On the basis of the above technical effects, the present invention also has the following advantages: As Figure 3 shown: Both the sleeve 101 and the drainage sleeve 102 are made of insulating materials, preventing current from flowing into the drainage sleeve 102 and the welding tip 3, resulting in melting when the drainage sleeve 102 and the welding tip 3 come into contact with the welding plate; As Figure 6 shown: Heat-conducting sheets 107 made of copper are provided in both the first through-hole 10101 and the second through-hole 10102, and the heat-conducting sheets 107 are in direct contact with the outer surface of the conductive sleeve 2. During the welding process, the heat generated by the conductive sleeve 2 will be conducted to the heat-conducting sheets 107, and then when air or protective gas is blown out through the first through-hole 10101 and the second through-hole 10102, the air or protective gas can carry out the heat on the heat-conducting sheets 107, improving the heat dissipation effect of the welding torch 1; As Figure 6 shown: Both the welding tip 3 and the drainage sleeve 102 are threadedly connected to the sleeve 101. Workers can remove the welding tip 3 and the drainage sleeve 102 to clean the welding slag and impurities adhering to their surfaces, improving the service life; at the same time, during the welding process, the welding slag generated during welding is prevented from splashing into the first through-hole 10101 and the second through-hole 10102 through the filter screen 106, making it difficult for subsequent workers to clean the welding slag in the first through-hole 10101 and the second through-hole 10102, resulting in blockage of the first through-hole 10101 and the second through-hole 10102.

[0032] Embodiment 2 On the basis of Embodiment 1, as Figure 1 and Figure 2 shown, it further includes a ball 109; a ball 109 is rotatably connected to the lower side of the drainage sleeve 102.

[0033] It further includes an alarm 201; a temperature sensor is provided in the sleeve 101; the alarm 201 is fixedly connected to the welding torch 1. When the temperature sensor in the sleeve 101 detects that the temperature is too high, the alarm 201 gives an alarm to remind the operator to suspend the welding operation.

[0034] A rubber grip 1001 is provided on the welding torch 1, making it easier for workers to hold the welding torch 1, preventing the welding torch 1 from slipping out of the hand, and at the same time improving the comfort of workers when holding the welding torch 1.

[0035] A strap 1002 is provided on the welding torch 1.

[0036] The working principle of the above embodiments is as follows: When welding, as Figure 2As shown: The worker pulls out the welding wire to an appropriate length, then presses the ball 109 against the surface of the metal workpiece 555, and then contacts the welding wire with the welding position. At this time, under the limitation of the ball 109, the welding wire will form an optimal welding angle of 60-80° with the surface of the metal workpiece 555; The worker uses the ball 109 as a support point and moves the welding torch 1 for welding. During this process, the welding wire and the surface of the metal workpiece 555 always maintain an optimal welding angle of 60-80°. The worker does not need to maintain the welding angle when the welding torch 1 is in a suspended state, which greatly reduces the labor intensity of the worker, improves the welding effect, and at the same time prevents the welding nozzle 3 from colliding with the workpiece surface through the setting of the ball 109, and improves the service life of the welding nozzle 3.

[0037] Further, during the welding process, the temperature of the sleeve 101 can be monitored by the temperature sensor inside the sleeve 101. When the temperature of the sleeve 101 is too high, the alarm 201 emits an alarm to remind the operator to suspend the welding operation and wait until the temperature of the sleeve 101 drops before proceeding with the welding work, so as to avoid damage to the sleeve 101 and the internal parts due to excessive temperature, which affects the service life of the welding torch 1.

[0038] Based on the above technical effects, the present invention also has the following advantages: As Figure 1 shown: The rubber grip 1001 makes it easier for the worker to hold the welding torch 1, avoids the welding torch 1 from slipping out of the hand, and at the same time improves the comfort of the worker when holding the welding torch 1.

[0039] As Figure 1 shown: When the worker climbs the stairs to repair and weld the metal pipe at a high place, the worker can tie and hang the welding torch 1 on the stairs or connect it to the waist rope through the strap 1002, so as to avoid the worker having to hold the welding torch 1 all the time when climbing the stairs, which affects the climbing.

[0040] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A metal welding device convenient for manual operation, comprising a welding torch (1); a conductive sleeve (2) is fixedly connected to the welding torch (1); a welding nozzle (3) is connected to the welding torch (1); characterized in that, It further includes a sleeve (101); there are two air flow channels provided on the welding torch (1); the sleeve (101) is fixedly connected to the outer side of the conductive sleeve (2); a plurality of first through holes (10101) and a plurality of second through holes (10102) are formed in the sleeve (101), all the first through holes (10101) are communicated with one of the flow channels on the welding torch (1), and all the second through holes (10102) are communicated with the other flow channel on the welding torch (1); all the first through holes (10101) are communicated with the first air outlet (3001) inside the welding nozzle (3); a diversion sleeve (102) is connected to the sleeve (101), and the end of the diversion sleeve (102) far from the sleeve (101) is in an outward-expanded shape; the diversion sleeve (102) is located outside the welding nozzle (3); a second air outlet (10201) is formed between the welding nozzle (3) and the diversion sleeve (102); all the second through holes (10102) are communicated with the second air outlet (10201); a regulating ring (103) for regulating the air flow is rotatably connected to the sleeve (101); the regulating ring (103) is composed of a first sealing part (10301), a second sealing part (10302) and a third sealing part (10303); a first rotating groove (10104) and a second rotating groove (10105) are formed in the sleeve (101), and the first rotating groove (10104) and the second rotating groove (10105) are communicated with each other; the second rotating groove (10105), the first through hole (10101) and the second through hole (10102) are communicated with each other; the first sealing part (10301) of the regulating ring (103) rotates in the second rotating groove (10105), and the second sealing part (10302) and the third sealing part (10303) of the regulating ring (103) rotate in the first rotating groove (10104).

2. The metal welding device convenient for manual operation according to claim 1, characterized in that, It further includes a rotating ring (104); the rotating ring (104) is rotatably connected to the outer ring surface of the sleeve (101), and the rotating ring (104) is fixedly connected to the regulating ring (103); two fixing holes (10103) are formed in the outer ring surface of the sleeve (101); a plug rod (105) is inserted into the rotating ring (104), and the diameter of the plug rod (105) is the same as the diameter of the fixing hole (10103).

3. A metal welding device convenient for manual operation according to claim 1, characterized in that, Both the sleeve (101) and the diversion sleeve (102) are made of insulating materials.

4. A metal welding device convenient for manual operation according to claim 1, characterized in that, Both the welding nozzle (3) and the diversion sleeve (102) are threadedly connected to the sleeve (101).

5. A metal welding device convenient for manual operation according to claim 1, characterized in that, It further includes heat-conducting sheets (107); a plurality of heat-conducting sheets (107) are annularly arranged in the sleeve (101); each heat-conducting sheet (107) passes through a corresponding first through hole (10101) and a second through hole (10102) and then contacts the outer surface of the conductive sleeve (2).

6. A metal welding device facilitating manual operation according to claim 1, wherein, It further includes a filter screen (106); filter screens (106) are fixedly connected to one ends of all the first through holes (10101) and the second through holes (10102) close to the welding nozzle (3) and the diversion sleeve (102).

7. A metal welding device convenient for manual operation according to any one of claims 1-6, characterized in that, It further includes balls (109); balls (109) are rotatably connected to the lower side of the diversion sleeve (102).

8. A metal welding device convenient for manual operation according to claim 1, characterized in that, It further includes an alarm (201); a temperature sensor is arranged inside the sleeve (101); the alarm (201) is fixedly connected to the welding torch (1).

9. A metal welding device convenient for manual operation according to claim 1, characterized in that, A rubber grip (1001) is arranged on the welding torch (1).

10. A metal welding device convenient for manual operation according to claim 1, characterized in that, A strap (1002) is arranged on the welding torch (1).

Images