Gas shielded welding wire device for pipeline welding

Abstract

The utility model discloses a gas shielded welding wire device for pipeline welding, and relates to the technical field of welding equipment. The welding device comprises a protection box and a welding gun, the protection box comprises a bottom plate, the top of the bottom plate is fixedly connected with two first supporting frames, the corresponding sides of the two first supporting frames are rotationally connected with wire reels, and the top of the protection box is fixedly connected with two second supporting frames close to the right sides of the first supporting frames. The corresponding sides of the two second supporting frames are rotationally connected with two guide wheels, the corresponding sides of the two guide wheels make contact, and grooves are formed in the guide wheels. By arranging the guide wheels and particularly starting the motor, the guide wheel located below rotates, the welding wire pulls the welding wire reel to rotate between the two first supporting frames, and meanwhile the guide wheels play a guiding role on the welding wire so that the welding wire can be evenly and stably sent out, and the problems that according to an existing gas shielded welding wire device, the welding wire reel can be directly rotated for wire feeding; and the welding effect is affected due to non-uniform wire feeding or breakage.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, and in particular relates to a gas shielded welding wire device for pipeline welding. Background Technology

[0002] Gas shielded welding is an arc welding technology that uses an external gas as the arc medium to protect the arc and the welding zone. This welding method can effectively improve welding quality and efficiency by using different shielding gases. Gas shielded welding is a commonly used welding method in pipeline welding. Existing gas shielded welding wire devices usually feed the wire by directly rotating the wire spool. However, this may cause the wire to be over-fed, resulting in uneven wire feeding or breakage, which affects the welding effect. Utility Model Content

[0003] The purpose of this invention is to provide a gas-shielded welding wire device for pipeline welding. By setting guide wheels, specifically by starting a motor to drive gear two and gear one to rotate, the guide wheels located below rotate. Since the internal grooves of the two guide wheels contact the outer surface of the welding wire, the welding wire pulls the welding wire spool to rotate between the two support frames. At the same time, the guide wheels guide the welding wire to ensure that it is fed out evenly and stably. This solves the problem of existing gas-shielded welding wire devices that directly rotate the welding wire spool to feed the wire, resulting in uneven wire feeding or wire breakage, which affects the welding effect.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a gas-shielded welding wire device for pipeline welding, comprising a protective box and a welding torch. The protective box includes a base plate, with two support frames fixedly connected to the top of the base plate. A welding wire spool is rotatably connected to one side of each support frame, and welding wire is disposed inside the spool. Two support frames are fixedly connected to the right side of the top of the protective box near the support frame one, with two guide wheels rotatably connected to one side of each support frame two. The two guide wheels are in contact with each other on their corresponding sides. The guide wheels have grooves inside, and the inner walls of the grooves of both guide wheels are in contact with the outer surface of the welding wire. A gear is fixedly connected to the front of the lower guide wheel, and a gear two is meshed with the left side of the gear one. A motor is fixedly connected to the top of the protective box, and the output end of the back of the motor is fixedly connected to the front of the gear two. The motor drives the gear set to rotate the guide wheels, realizing automatic and uniform feeding of the welding wire. The design of the double guide wheel grooves clamping the welding wire can prevent the welding wire from deviating or slipping, improving the stability of wire feeding.

[0006] Furthermore, a threaded knob is inserted into the front of the support frame located on the front side. The back of the threaded knob passes through the welding wire spool and extends into the interior of the support frame located on the back side. The back of the threaded knob is threadedly connected to the interior of the support frame located on the back side. The design of the threaded knob passing through the support frame and the welding wire spool allows for quick disassembly, assembly, and locking of the welding wire spool, facilitating the replacement of welding wire spools of different specifications and improving the adaptability and operational efficiency of the device.

[0007] Furthermore, a handle is fixedly connected to the top of the protective box, and casters are fixedly connected to the four corners of the bottom of the base plate. A guide tube is provided on the right side of the welding wire, and the guide tube is fixedly connected to the right side of the protective box. The combination design of the handle and the casters makes the device easy to move and position, especially suitable for long-distance pipeline welding scenarios. The guide tube constrains the welding wire feeding path, reduces the bending or shaking of the welding wire, and reduces friction loss.

[0008] Furthermore, a gas cylinder is fixedly connected to the top of the protective box via a support frame, and a pressure regulating valve is fixedly connected to the right side of the gas cylinder. The gas cylinder precisely controls the gas pressure through the regulating valve to ensure the stability of the protective gas flow during the welding process.

[0009] Furthermore, a gas pipe is fixedly connected to the right side of the pressure regulating valve. The side of the gas pipe away from the gas cylinder is fixedly connected to the outer surface of the guide tube. The gas pipe is fixedly arranged along the outer wall of the guide tube to avoid the gas pipeline from intersecting with the welding wire conveying path, while shortening the gas conveying distance, reducing gas pressure loss, and improving gas utilization.

[0010] Furthermore, a wire feeding tube is fixedly connected to the right side of the guide tube. The wire feeding tube has two layers, an inner layer that contacts the outer surface of the welding wire, and an outer layer that is connected to the gas pipe through the guide tube. The double-layer wire feeding tube design achieves the separate delivery of the welding wire and the shielding gas. The inner layer guides the welding wire to avoid deviation, while the outer layer delivers the gas directly to the welding torch area, reducing premature gas escape and improving protection efficiency.

[0011] Furthermore, four air jet pipes are fixedly connected to the right side of the wire feed tube. The right side of the air jet pipes is fixedly connected to the left side of the welding torch. Air nozzles are fixedly connected to the right side of the air jet pipes. The four air jet pipes are evenly distributed around the welding torch. The multiple air nozzles form an annular air curtain, which enhances the protective coverage of the weld pool, reduces interference from the ambient airflow, and reduces the rate of weld oxidation and porosity defects.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, by setting guide wheels, specifically by starting the motor to drive gear two and gear one to rotate, thereby causing the guide wheels located below to rotate. Since the internal grooves of the two guide wheels contact the outer surface of the welding wire, the welding wire pulls the welding wire spool to rotate between the two support frames. At the same time, the guide wheels guide the welding wire to ensure that it is fed out evenly and stably, effectively avoiding the problem of welding wire breakage caused by uneven wire feeding speed or excessive welding wire tension, and improving welding efficiency.

[0014] 2. This utility model, by setting up a wire feeding tube, specifically starts the gas cylinder, reduces the high-pressure gas to a suitable working pressure through the pressure regulating valve, and then sends the protective gas into the outer layer of the wire feeding tube through the gas pipe and guide pipe, and then sends it to the air nozzle through the air jet pipe. The double-layer design of the wire feeding tube simplifies the wire feeding and gas delivery lines, ensures that the protective gas effectively covers the welding area, and further improves the welding efficiency.

[0015] 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

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the enlarged structure of A in the middle;

[0019] Figure 3 This is a schematic diagram of the internal structure of the protective box of this utility model;

[0020] Figure 4 This is a schematic diagram of the welding wire reel structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the gas cylinder structure of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Protective box; 11. Handle; 12. Base plate; 121. Casters; 13. Support frame one; 131. Welding wire spool; 132. Welding wire; 133. Threaded knob; 14. Support frame two; 141. Guide wheel; 142. Gear one; 143. Gear two; 144. Motor; 15. Guide tube; 16. Gas cylinder; 161. Pressure regulating valve; 162. Connecting pipe; 17. Wire feed tube; 171. Air jet pipe; 172. Air jet nozzle; 2. Welding torch. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1-5As shown, this utility model is a gas-shielded welding wire device for pipeline welding, including a protective box 1 and a welding torch 2. The protective box 1 includes a base plate 12, and two support frames 13 are fixedly connected to the top of the base plate 12. A welding wire spool 131 is rotatably connected to the corresponding side of the two support frames 13, and a welding wire 132 is disposed inside the welding wire spool 131. Two support frames 14 are fixedly connected to the top of the protective box 1 near the right side of the support frames 13, and two guide wheels 141 are rotatably connected to the corresponding side of the two support frames 14. The corresponding sides of the two guide wheels 141 are in contact, and grooves are formed inside the guide wheels 141. The inner walls of the grooves of the two guide wheels 141 are in contact with the outer surface of the welding wire 132. A gear 142 is fixedly connected to the front of the lower guide wheel 141. Gear 142 is meshed with gear 143 on its left side. A motor 144 is fixedly connected to the top of the protective box 1. The output end of the motor 144 is fixedly connected to the front of gear 143. Guide wheels 141 are provided; specifically, starting the motor 144 drives gears 143 and 142 to rotate, thus rotating the guide wheels 141 located below. Because the internal grooves of the two guide wheels 141 contact the outer surface of the welding wire 132, the welding wire spool 131 rotates between the two support frames 13. Simultaneously, the guide wheels 141 guide the welding wire 132, ensuring a uniform and stable feed, effectively preventing wire breakage due to uneven feeding speed or excessive wire tension, and improving welding efficiency. A threaded screw is inserted into the front of the support frame 13 located on the front. Button 133, a threaded knob 133, extends through the back of the welding wire spool 131 and into the support frame 13 located on the back. The back of the threaded knob 133 is threadedly connected to the inside of the support frame 13 located on the back. A handle 11 is fixedly connected to the top of the protective box 1. Universal wheels 121 are fixedly connected to the four corners of the bottom of the base plate 12. A guide tube 15 is provided on the right side of the welding wire 132. The guide tube 15 is fixedly connected to the right side of the protective box 1. A gas cylinder 16 is fixedly connected to the top of the protective box 1 via a support frame. A pressure regulating valve 161 is fixedly connected to the right side of the gas cylinder 16. A gas pipe 162 is fixedly connected to the right side of the pressure regulating valve 161. The side of the gas pipe 162 away from the gas cylinder 16 is fixedly connected to the outer surface of the guide tube 15. A wire feeding tube 17 is fixedly connected to the right side of the guide tube 15. The wire feed tube 17 has an inner and outer layer design. The inner layer of the wire feed tube 17 contacts the outer surface of the welding wire 132, while the outer layer of the wire feed tube 17 is interconnected with the gas pipe 162 through the guide pipe 15. Four air jet pipes 171 are fixedly connected to the right side of the wire feed tube 17. The right side of the air jet pipes 171 is fixedly connected to the left side of the welding torch 2, and the right side of the air jet pipes 171 is fixedly connected to the air nozzles 172. By setting up the wire feed tube 17, specifically by starting the gas cylinder 16 and reducing the high-pressure gas to a suitable working pressure through the pressure regulating valve 161, the protective gas is sent into the outer layer of the wire feed tube 17 through the gas pipe 162 and the guide pipe 15, and then sent to the air nozzles 172 through the air jet pipes 171. The inner and outer double-layer design of the wire feed tube 17 simplifies the wire feeding and gas supply lines, ensures that the protective gas effectively covers the welding area, and further improves welding efficiency.

[0026] A specific application of this embodiment is as follows: In use, firstly, the device is moved to the side of the pipe using the handle 11 and the caster wheel 121. Then, the motor 144 is started, driving gear two 143 and gear one 142 to rotate, thereby causing the guide wheel 141 located below to rotate. Since the internal grooves of the two guide wheels 141 contact the outer surface of the welding wire 132, the welding wire spool 131 rotates between the two support frames one 13. At the same time, the guide wheels 141 guide the welding wire 132, ensuring that it is fed out evenly and stably, effectively avoiding uneven wire feeding speed or welding defects. To address the wire breakage problem caused by excessive wire tension, the gas cylinder 16 is activated. After the high-pressure gas is reduced to a suitable working pressure through the pressure regulating valve 161, the protective gas is sent to the outer layer of the wire feeding tube 17 through the gas pipe 162 and the guide pipe 15, and then sent to the air nozzle 172 through the air jet pipe 171. During the welding process, the protective gas is evenly sprayed from the air nozzle 172 onto the welding area, forming a stable gas protective layer that isolates the outside air from contact with the welding area and prevents oxygen, nitrogen and other gases in the air from having an adverse effect on the weld.

[0027] 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.

[0028] 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 present 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 the present 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 gas shielded welding wire device for pipe welding, characterized by: The device includes a protective box (1) and a welding torch (2). The protective box (1) includes a base plate (12). Two support frames (13) are fixedly connected to the top of the base plate (12). Welding wire spools (131) are rotatably connected to the corresponding sides of the two support frames (13). Welding wire (132) is installed inside the welding wire spools (131). Two support frames (14) are fixedly connected to the right side of the top of the protective box (1) near the support frames (13). Two guide wheels (141) are rotatably connected to the corresponding sides of the two support frames (14). The two guide wheels (141) are in contact on opposite sides. The guide wheels (141) have grooves inside. The inner walls of the grooves of the two guide wheels (141) are in contact with the outer surface of the welding wire (132). The guide wheel (141) located below is fixedly connected to a gear one (142) on the front. The gear one (142) is meshed with a gear two (143) on the left side. The protective box (1) is fixedly connected to a motor (144) on the top. The output end of the motor (144) on the back is fixedly connected to the front of the gear two (143).

2. The gas-shielded welding wire device for pipeline welding according to claim 1, characterized in that, The support frame (13) located on the front has a threaded knob (133) inserted into its front side. The back of the threaded knob (133) passes through the welding wire spool (131) and extends into the support frame (13) located on the back side. The back of the threaded knob (133) is threadedly connected to the inside of the support frame (13) located on the back side.

3. A gas-shielded welding wire device for pipeline welding according to claim 2, characterized in that, The top of the protective box (1) is fixedly connected to a handle (11), and the bottom of the base plate (12) is fixedly connected to four corners of a caster wheel (121). A guide tube (15) is provided on the right side of the welding wire (132), and the guide tube (15) is fixedly connected to the right side of the protective box (1).

4. A gas-shielded welding wire device for pipeline welding according to claim 3, characterized in that, The protective box (1) has a gas cylinder (16) fixedly connected to the top via a support frame, and a pressure regulating valve (161) is fixedly connected to the right side of the gas cylinder (16).

5. A gas-shielded welding wire device for pipeline welding according to claim 4, characterized in that, The pressure regulating valve (161) is fixedly connected to a gas pipe (162) on the right side, and the side of the gas pipe (162) away from the gas cylinder (16) is fixedly connected to the outer surface of the guide tube (15).

6. A gas-shielded welding wire device for pipeline welding according to claim 5, characterized in that, The guide tube (15) is fixedly connected to the right side of the wire feeding tube (17). The wire feeding tube (17) is configured with inner and outer layers. The inner layer of the wire feeding tube (17) is in contact with the outer surface of the welding wire (132), and the outer layer of the wire feeding tube (17) is connected to the air pipe (162) through the guide tube (15).

7. A gas-shielded welding wire device for pipeline welding according to claim 6, characterized in that, Four air jet pipes (171) are fixedly connected to the right side of the wire feeding tube (17). The right side of the air jet pipe (171) is fixedly connected to the left side of the welding torch (2). An air nozzle (172) is fixedly connected to the right side of the air jet pipe (171).

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