Fixed protection device for core wire welding

Abstract

The utility model discloses a fixed protection device for core wire welding, the surface of base is equipped with a plurality of recess, and the both sides of base are equipped with a plurality of mounting holes, and the side surface of base is equipped with a plurality of clamping pieces, and the middle part of a plurality of recesses are all equipped with gas flow guide hole, and inert gas is spouted from the gas flow guide hole, and the welding process is cooled. Solve the existing technology when the core wire welding fixed, cooling and the poor protection effect of effect, lead to the problem of low core wire welding quality.

Description

Technical Field

[0001] This utility model belongs to the field of manual argon arc welding technology and relates to a fixing and protective device for core wire welding. Background Technology

[0002] Currently, the connection between the core wire (nickel-chromium alloy) and the cable (T2 copper) is usually completed by manual TIG welding. To ensure that the molten pool is not oxidized by air during welding, and because the copper needs to be cooled, a device for rapid fixation, welding, and protection by manual TIG welding is needed, based on mechanical design and other technologies.

[0003] Chinese invention patent CN109290718A, published on February 1, 2019, entitled "Fixing, Protecting and Cooling Device for Welding," and Chinese utility model patent CN208929580U, published on June 4, 2019, entitled "Fixing, Protecting and Cooling Device for Welding," disclose a device for fixing, protecting and cooling laser welding. The device includes two fixing plates, a flow channel, and a nozzle. The nozzle is connected to the outside environment. A heat-conducting plate for sealing the flow channel is fixedly connected to the fixing plates. Each fixing plate has an input hole for introducing gas into the flow channel. This patent directs cooling air to the middle and bottom of the joint by adjusting the gas flow rate in the flow channel. The device uses a V-groove design, and the contact between the core wire and the base is line contact, which is not conducive to heat dissipation. Therefore, the fixing and cooling device has poor cooling, fixing, and protection effects during core wire welding and needs further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a fixing and protective device for core wire welding, which solves the problem of poor fixing, cooling and protection effects during core wire welding in the prior art, resulting in low welding quality.

[0005] The technical solution adopted by this utility model includes a base, a number of grooves on the surface of the base, a number of mounting holes on both sides of the base, a number of clamping parts installed on the side of the base, and a gas guide hole in the center of each of the grooves.

[0006] The features of this utility model also include: The clamping components include a first clamping component and a second clamping component, which are arranged in an inverted L-shape.

[0007] The shapes of the contact surfaces between the upper ends of the first and second clamping members and the bar to be welded are adapted to the shape of the bar to be welded.

[0008] A gas nozzle is provided at the lower end of the gas guide hole.

[0009] The shape of the groove is adapted to the shape of the contact between the bar and the material to be welded.

[0010] The first clamping member and the second clamping member are also provided with through holes corresponding to the mounting holes. The first clamping member and the second clamping member are fixed to the side of the base by fastening bolts.

[0011] The base is made of copper.

[0012] The diameter of the gas nozzle is the same as the diameter of the gas guide hole.

[0013] The beneficial effects of this utility model are: 1. In this utility model patent, when welding two sections of bar material to be welded, the inert gas enters the gas guide hole through the nozzle at the bottom of the copper base. The inert gas will be in the gas guide hole and then discharged from the flow hole on the upper surface of the copper base, forming a gas flow. During this process, the heat in the heat-affected zone will be reduced by the heat conduction effect of the copper base, and then the heat will be transferred to the copper base and then to the inert gas in the flow hole. The inert gas will continuously carry away the heat on the groove and the copper base due to its own flow, thereby reducing the temperature of the heat-affected zone and the temperature of the entire device.

[0014] 2. To ensure stable fixation of the core wire rod to the copper base, this utility model patent utilizes the compression between two clamping members and the core rod to achieve relative fixation between the core rod and the groove on the copper base. The process is as follows: An adjustable wrench rotates the bolt, causing a tendency for relative movement between the clamping members and the copper base. The upper end of the clamping member is positioned at the top of the core wire rod, and the compression ensures a tight fit between the rod to be welded and the groove on the copper base. The rod cannot rotate within the groove. After clamping, the wrench is removed from the bolt, thus fixing the core rod in place within the groove until welding is complete. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model for removing the bar to be welded and the clamping parts; Figure 3 This is a structural schematic diagram of the clamping component of this utility model; Figure 4 This is a schematic diagram of the gas guide hole structure.

[0016] In the figure, 1-base, 2-groove, 3-gas nozzle, 4-gas guide hole, 5-fastening bolt, 6-first clamping member, 7-second clamping member, 8-mounting hole, 9-first bar to be welded, 10-second bar to be welded. Detailed Implementation

[0017] The following detailed description is provided in conjunction with specific implementation methods.

[0018] The present utility model patent will be further described with reference to the accompanying drawings.

[0019] This utility model relates to a fixing and protective device for core wire welding, such as... Figure 1-4 As shown, it includes a long strip-shaped base 1, which is made of copper. The copper base 1 has three grooves 2 of different sizes for placing welding rods of different sizes for welding. Each groove 2 has a gas guide hole 4 in the center to protect the gas flow and the assembly and welding of the welding joint.

[0020] The lower end of the gas guide hole 4 is also connected to the gas nozzle 3. The diameter of the gas guide hole 4 is the same as the diameter of the gas nozzle 3. Inert gas is ejected from the gas nozzle 3 and then ejected through the gas guide hole 4.

[0021] In the groove 2 and on both sides of the gas guide hole 4, the first welding rod 9 and the second welding rod 10 are placed. The first welding rod 9 is a nickel-chromium alloy rod with a diameter of 8mm, and the second welding rod 10 is a pure copper rod with a diameter of 8mm. After the first welding rod 9 and the second welding rod 10 are ground before welding, the surface of the base material has completely revealed the metal color. The first welding rod 9 and the second welding rod 10 are beveled using a beveling machine. Finally, they are placed in the groove 2 with a diameter of 8mm. The first clamping member 6 and the second clamping member 7 are used to clamp and fix the first welding rod 9 and the second welding rod 10 respectively to avoid misalignment of the joint during the welding process, which would lead to poor alignment of the joint.

[0022] Specifically, the first clamping member 6 and the second clamping member 7 are inverted L-shaped, and the contact surface between the clamping member and the bar to be welded has an arc that matches the shape of the bar to be welded, which can achieve more stable fixation; eight mounting holes 8 are opened on both sides of the base 1, and the first clamping member 6 and the second clamping member 7 are opened with through holes corresponding to the mounting holes 8. The first clamping member 6 and the second clamping member 7 are fixed to the side of the base 1 by fastening bolts 5.

[0023] The working principle of this utility model's fixing and protective device for core wire welding is as follows: The welding method of this utility model device is electric arc welding, which adopts non-consumable electrode inert gas shielded welding and DC positive connection. The bar to be welded is connected to the positive terminal of the TIG welding power supply device, and the welding torch is connected to the negative terminal of the TIG welding power supply. The relative position of the operator and the copper base 1 is adjusted to make the operation convenient during the welding process and easy to control the morphology and temperature of the molten pool.

[0024] Before welding begins, turn on the gas source switch connected to the gas nozzle 3 to allow inert gas to circulate for an extended period near the joint. Place the first welding rod 9 and the second welding rod 10 in the corresponding sized groove 2, and place the parts to be welded on both sides of the gas guide hole 4. Then, clamp the first welding rod 9 and the second welding rod 10 using the first clamping member 6 and the second clamping member 7.

[0025] Set the welding parameters: the bevel filling direction is perpendicular to the copper base 1 and upward; the arc oscillation area is the position between the bevels; use pure copper welding wire with a diameter of 2.0mm as the filler material; the shielding gas flow rate is 15L / min; and use a Panasonic AC / DC TIG welding machine for welding.

[0026] After the electric arc burns normally, it remains stationary on the copper rod side, continuously heating the copper. Once the metal on the copper rod side shows signs of melting, it moves to the center of the joint for filling welding. The filling area ensures complete interfusion between the nickel-chromium alloy rod and the pure copper rod. During welding, inert gas is continuously ejected from the gas guide hole 4 to cool the welding point. The inert gas also flows to the groove 2 to cool the bodies of the two rods to be welded.

[0027] After the welding has cooled down, remove the fastening bolts 5 between the first clamping member 6, the second clamping member 7 and the base 1, remove the first clamping member 6 and the second clamping member 7, remove the welded rod, stop the gas supply, and end the entire welding process.

[0028] Example 1 In this embodiment, the fixing and protective device for core wire welding includes a base 1. Three grooves 2 of different sizes are formed on the surface of the base 1. The grooves 2 are used to place the rods to be welded. Eight mounting holes 8 are formed on each of the two sides of the base 1, used to install clamping members on the sides of the base 1 with fastening bolts 5. Two clamping members are provided, including a first clamping member 6 and a second clamping member 7. Gas guide holes 4 are formed in the middle of each of the three grooves 2. The rods to be welded, the first rod 9 and the second rod 10, are placed on the corresponding grooves 2 and positioned on both sides of the gas guide holes 4. The rods to be welded are fixed using the first clamping member 6 and the second clamping member 7. The parts to be welded are brought close together and welded. Inert gas is sprayed from the gas guide holes 4 for gas protection and cooling.

[0029] Example 2 In this embodiment, the fixing and protective device for core wire welding includes a base 1. Three grooves 2 of different sizes are formed on the surface of the base 1. The grooves 2 are used to place the rods to be welded. Eight mounting holes 8 are formed on each of the two sides of the base 1, used to install clamping members on the sides of the base 1 with fastening bolts 5. Two clamping members are provided, including a first clamping member 6 and a second clamping member 7. Gas guide holes 4 are formed in the middle of each of the three grooves 2. The rods to be welded, the first rod 9 and the second rod 10, are placed on the corresponding grooves 2 and positioned on both sides of the gas guide holes 4. The rods to be welded are fixed using the first clamping member 6 and the second clamping member 7. The parts to be welded are brought close together and welded. Inert gas is sprayed from the gas guide holes 4 for gas protection and cooling.

[0030] The first clamping member 6 and the second clamping member 7 have an inverted L-shaped structure. One end is used to press down the bar to be welded, and the other end is used to fix and install it to the side of the base 1.

[0031] Example 3 In this embodiment, the fixing and protective device for core wire welding includes a base 1. Three grooves 2 of different sizes are formed on the surface of the base 1. The grooves 2 are used to place the rods to be welded. Eight mounting holes 8 are formed on each of the two sides of the base 1, used to install clamping members on the sides of the base 1 with fastening bolts 5. Two clamping members are provided, including a first clamping member 6 and a second clamping member 7. Gas guide holes 4 are formed in the middle of each of the three grooves 2. The rods to be welded, the first rod 9 and the second rod 10, are placed on the corresponding grooves 2 and positioned on both sides of the gas guide holes 4. The rods to be welded are fixed using the first clamping member 6 and the second clamping member 7. The parts to be welded are brought close together and welded. Inert gas is sprayed from the gas guide holes 4 for gas protection and cooling.

[0032] The first clamping member 6 and the second clamping member 7 have an inverted L-shaped structure. One end is used to press down the bar to be welded, and the other end is used to fix and install it to the side of the base 1.

[0033] A gas nozzle 3 is provided at the lower end of the gas guide hole 4. The gas nozzle 3 is installed at the lower end of the gas guide hole 4, and inert gas is sprayed out from the gas nozzle 3 and then flows out from the gas guide hole 4.

[0034] Example 4 In this embodiment, the fixing and protective device for core wire welding includes a base 1. Three grooves 2 of different sizes are formed on the surface of the base 1. The grooves 2 are used to place the rods to be welded. Eight mounting holes 8 are formed on each of the two sides of the base 1, used to install clamping members on the sides of the base 1 with fastening bolts 5. Two clamping members are provided, including a first clamping member 6 and a second clamping member 7. Gas guide holes 4 are formed in the middle of each of the three grooves 2. The rods to be welded, the first rod 9 and the second rod 10, are placed on the corresponding grooves 2 and positioned on both sides of the gas guide holes 4. The rods to be welded are fixed using the first clamping member 6 and the second clamping member 7. The parts to be welded are brought close together and welded. Inert gas is sprayed from the gas guide holes 4 for gas protection and cooling.

[0035] The first clamping member 6 and the second clamping member 7 have an inverted L-shaped structure. One end is used to press down the bar to be welded, and the other end is used to fix and install it to the side of the base 1.

[0036] A gas nozzle 3 is provided at the lower end of the gas guide hole 4. The gas nozzle 3 is installed at the lower end of the gas guide hole 4, and inert gas is sprayed out from the gas nozzle 3 and then flows out from the gas guide hole 4.

[0037] The shape of the groove 2 is adapted to the shape of the contact between the bar and the bar to be welded, and the groove 2 is available in various sizes, so that the corresponding size groove 2 can be selected to place the bar to be welded.

[0038] Example 5 In this embodiment, the fixing and protective device for core wire welding includes a base 1. Three grooves 2 of different sizes are formed on the surface of the base 1. The grooves 2 are used to place the rods to be welded. Eight mounting holes 8 are formed on each of the two sides of the base 1, used to install clamping members on the sides of the base 1 with fastening bolts 5. Two clamping members are provided, including a first clamping member 6 and a second clamping member 7. Gas guide holes 4 are formed in the middle of each of the three grooves 2. The rods to be welded, the first rod 9 and the second rod 10, are placed on the corresponding grooves 2 and positioned on both sides of the gas guide holes 4. The rods to be welded are fixed using the first clamping member 6 and the second clamping member 7. The parts to be welded are brought close together and welded. Inert gas is sprayed from the gas guide holes 4 for gas protection and cooling.

[0039] The first clamping member 6 and the second clamping member 7 have an inverted L-shaped structure. One end is used to press down the bar to be welded, and the other end is used to fix and install it to the side of the base 1.

[0040] A gas nozzle 3 is provided at the lower end of the gas guide hole 4. The gas nozzle 3 is installed at the lower end of the gas guide hole 4, and inert gas is sprayed out from the gas nozzle 3 and then flows out from the gas guide hole 4.

[0041] The shape of the groove 2 is adapted to the shape of the contact between the bar and the bar to be welded, and the groove 2 is available in various sizes, so that the corresponding size groove 2 can be selected to place the bar to be welded.

[0042] The first clamping member 6 and the second clamping member 7 have through holes corresponding to the mounting hole 8. The first clamping member 6 and the second clamping member 7 are fixed to the side of the base 1 by fastening bolts 5.

[0043] Example 6 In this embodiment, the fixing and protective device for core wire welding includes a base 1 made of copper. Three grooves 2 of different sizes are formed on the surface of the base 1 for placing the rod to be welded. Eight mounting holes 8 are formed on each of the two sides of the base 1 for mounting clamping components on the sides of the base 1 with fastening bolts 5. Two clamping components are provided: a first clamping component 6 and a second clamping component 7. Gas guide holes 4 are formed in the center of each of the three grooves 2. The rod to be welded, the first rod to be welded 9, and the second rod to be welded 10 are placed on the corresponding grooves 2 and positioned on both sides of the gas guide holes 4. The rods to be welded are fixed using the first clamping component 6 and the second clamping component 7. The parts to be welded are brought close together and welded. Inert gas is sprayed from the gas guide holes 4 for gas protection and cooling.

[0044] The first clamping member 6 and the second clamping member 7 have an inverted L-shaped structure. One end is used to press down the bar to be welded, and the other end is used to fix and install it to the side of the base 1.

[0045] A gas nozzle 3 is provided at the lower end of the gas guide hole 4. The gas nozzle 3 is installed at the lower end of the gas guide hole 4, and inert gas is ejected from the gas nozzle 3 and then flows out of the gas guide hole 4. The diameter of the gas nozzle 3 is the same as the diameter of the gas guide hole 4.

[0046] The shape of the groove 2 is adapted to the shape of the contact between the bar and the bar to be welded, and the groove 2 is available in various sizes, so that the corresponding size groove 2 can be selected to place the bar to be welded.

[0047] The first clamping member 6 and the second clamping member 7 have through holes corresponding to the mounting hole 8. The first clamping member 6 and the second clamping member 7 are fixed to the side of the base 1 by fastening bolts 5.

Claims

1. A fixing and protective device for core wire welding, characterized in that, Includes a base (1), the surface of the base (1) is provided with several grooves (2), the sides of the base (1) are provided with several mounting holes (8), the sides of the base (1) are provided with several clamping parts, and the center of each of the grooves (2) is provided with a gas guide hole (4).

2. The fixing and protective device for core wire welding according to claim 1, characterized in that, The clamping components include a first clamping component (6) and a second clamping component (7), which are in an inverted L-shaped structure.

3. The fixing and protective device for core wire welding according to claim 2, characterized in that, The shape of the contact surface between the upper end of the first clamping member (6) and the second clamping member (7) and the bar to be welded is adapted to the shape of the bar to be welded.

4. The fixing and protective device for core wire welding according to claim 1, characterized in that, A gas nozzle (3) is provided at the lower end of the gas guide hole (4).

5. The fixing and protective device for core wire welding according to claim 1, characterized in that, The shape of the groove (2) is adapted to the shape of the bar to be welded.

6. The fixing and protective device for core wire welding according to claim 2, characterized in that, The first clamping member (6) and the second clamping member (7) are also provided with through holes corresponding to the mounting hole (8). The first clamping member (6) and the second clamping member (7) are fixed to the side of the base (1) by fastening bolts (5).

7. The fixing and protective device for core wire welding according to claim 1, characterized in that, The base (1) is made of copper.

8. The fixing and protective device for core wire welding according to claim 4, characterized in that, The diameter of the gas nozzle (3) is the same as the diameter of the gas guide hole (4).

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