[0022] See also Figure 1 to Figure 6 As shown, according to an embodiment of the present invention, a thermocouple welding device is provided, including a welding component and a power supply line, wherein the welding component includes a device base 1 on which a first carbon rod 21, The second carbon rod 22, the tip of the first carbon rod 21 and the tip of the second carbon rod 22 are arranged opposite to each other in the axial direction, and the first carbon rod 21 and the second carbon rod 22 are respectively connected in series In the power supply line, when the power supply line is in a power supply state, an arc can be formed in the gap between the tip of the first carbon rod 21 and the tip of the second carbon rod 22. In this technical solution, the first carbon rod 21 and the second carbon rod 22 are respectively connected in series in the power supply line, so that after the power supply line is energized, the first carbon rod 21 and the second carbon rod can be connected in series. An arc is formed at the gap between the tips of the two carbon rods 22. At this time, the couple wire to be welded is placed at the gap, thereby realizing rapid and efficient welding of heterogeneous couple wires. The couple wire does not act as an electrode, and does not need to be in contact with the first carbon rod 21 and the second carbon rod 22. Therefore, the cleanliness of the welded galvanic wire can be ensured, and the carbon rod welding method in the prior art can be effectively eliminated. Due to the pollution of the double wire, the technical solution does not require the professional welding equipment in the prior art, thereby reducing the manufacturing cost, the principle is simple, and the operation is more convenient for the operator.
[0023] Such as figure 1 As shown, the power supply line includes a live wire 101 and a neutral wire 102 connected in series through the arc formed between the first carbon rod 21 and the second carbon rod 22, and also includes an auto-coupling voltage regulator 100 for The voltage applied by the power supply line to the first carbon rod 21 and the second carbon rod 22 is adjusted, and a power switch 103 is provided on the live wire 101 for controlling the application of voltage. The design of the auto-voltage regulator 100 in this technical solution enables the voltage value of the power supply line to be adjusted according to the rules of the couple wire to be welded, so as to ensure the matching of the welding conditions and the specifications of the couple wire, thereby improving the welding effect. The power switch 103 preferably adopts an air switch with a rated current of 20A.
[0024] The auto-voltage regulator 100 also has a ground wire 105 to prevent the operator from getting an electric shock; the live wire 101 is also provided with a fuse 104 to achieve current overload protection, which can be specifically implemented by a 15 ohm resistor.
[0025] Furthermore, the welding voltage, welding time and arc generation distance of different specifications of the couple wire will be different during welding, and the change of these differences will directly lead to the welding effect of the thermocouple, in order to be able to improve the welding object of the welding part. Preferably, one of the first carbon rod 21 and the second carbon rod 22 can move toward or away from the other one of them, that is, the first carbon rod 21, the second carbon rod The width of the gap between the two carbon rods 22 can be selectively adjusted. Preferably, the position of the first carbon rod 21 is fixed, and the position of the second carbon rod 22 can be moved, thereby reducing two The difficulty of adjusting the gap between the carbon rods. Further, the first carbon rod 21 is fixedly connected to the device base 1 through a first conductive clamping member 31, and the second carbon rod 22 is connected to the device base 1 through a second conductive clamping member 32. The first conductive clamping member 31 and the second conductive clamping member 32 are used as electrical connection parts with the power supply line on the one hand, and the first carbon rod 21 on the other hand. The fixed installation part of the second carbon rod 22 may be copper in specific material.
[0026] The device base 1 has a sliding rail 11, a first insulating slider 12 is provided on the sliding rail 11, and the second conductive clamping member 32 is fixedly connected to the first insulating slider 12, and further A push block 4 is fixedly connected to the first insulating sliding block 12, and the position adjustment of the second carbon rod 22 is realized by pushing the push block 4. The sliding rail 11 may have two parallel arrangement, which can effectively prevent the posture balance of the first insulating slider 12 during the sliding process.
[0027] A specific implementation of the first conductive clamping member 31 of the seat, preferably, the first conductive clamping member 31 includes a sleeve 311, a fixing seat 312, the sleeve 311 and the fixing seat 312 Are connected by a support arm 313. The sleeve 311 has an open slot 314 that extends from the outside of the sleeve 311 to the support arm 313 via the axis of the sleeve 311. This technology In the solution, the sleeve 311 has a cylindrical center hole, which matches the outer peripheral surface of the first carbon rod 21 in shape, so as to achieve a reliable clamping of the first carbon rod 21. The open groove The arrangement of 314 gives the first conductive clamping member 31 a deformation margin, so as to compensate for the dimensional error of the outer peripheral profile of the first carbon rod 21. Further, the support arm 313 is provided with a through hole 315, and the through hole 315 is located in the area corresponding to the opening groove 314 for passing the fastener 316, for example, the fastener 316 is a bolt and nut. Second, the adjustment of the connection force between the sleeve 311 and the first carbon rod 21 can be achieved by screwing. It is understandable that the structure of the second conductive clamping member 32 may be completely the same as the structure of the first conductive clamping member 31, which will not be repeated here.
[0028] Further, the device base 1 is also provided with a thermocouple clamping component, the thermocouple clamping component has a clamping head 51 for clamping the thermocouple wire and for adjusting the height of the clamping head 51 Therefore, the thermocouple wire can be clamped at the free end of the telescopic pole 52 by the clamping head 51 and the position is relatively fixed at the gap position where the arc is generated, avoiding the prior art The use of manual methods to clamp the even wire may bring hidden dangers of burns. The telescopic pole 52 can theoretically achieve height adjustment in the vertical direction. In terms of specific structure, for example, it can be two threaded rods, which can be screwed in or out to achieve height adjustment. .
[0029] Furthermore, the clamping head 51 and the telescopic pole 52 are movably connected by a ball hinge 53. The arrangement of the ball hinge 53 can make the clamping head 51 have different pitch and swing angles. This enables the operator to adjust the position of the pair of wires to be welded by controlling the deflection angle of the ball hinge 53, and has the ability to control the pair of wires to be welded in the arc formed during the welding process.
[0030] Preferably, the telescopic pole 52 is slidably connected to the device base 1 so that the thermocouple clamping member can face or move away from the tip of the first carbon rod 21 and the second carbon rod The gap between the tips of 22 slides and can slide back and forth along the sliding direction of the second carbon rod 22. In this technical solution, the degree of freedom of movement of the telescopic pole 52 is increased to further improve the specification of the welding part to adapt to more welding objects. It should be particularly noted that the thermocouple clamping part can be moved toward or away from The gap between the tip of the first carbon rod 21 and the tip of the second carbon rod 22 slides so that the operator can move away from the first carbon rod 21 and the second carbon rod 22 when clamping the wire. Operation to prevent safety hazards caused by operating errors when the distance between the first carbon rod 21 and the second carbon rod 22 is too close. As a specific implementation of the aforementioned two degrees of freedom of movement of the telescopic vertical rod 52, preferably, the bottom end of the telescopic vertical rod 52 slides between the second insulating slider 54 and the third insulating slider 55. Connected, the third insulating slider 55 is slidably connected with the slide rail 11, the sliding direction between the second insulating slider 54 and the third insulating slider 55 is the first direction, and the first The sliding direction between the three-insulation sliding block 55 and the sliding rail 11 is a second direction, and the first direction and the second direction are perpendicular to the horizontal plane. In this technical solution, the third insulating sliding block 55 is also slidably connected to the sliding rail 11 to make the structure of the welding component more compact.
[0031] The thermocouple welding device further includes a baffle 6 with goggles 61 on the baffle 6 and a fixed connection between the baffle 6 and the device base 1 to provide necessary protection for the operator.
[0032] The following describes the use of the thermocouple welding device of the present invention:
[0033] First twist the thermocouple wire: twist 3-4 uniform and tight twists at the end of the thermocouple wire, and then cut the ends of the twisted thermocouple wire into a straight line to form the thermocouple wire Clamp on the clamping head 51. In this process, the thermocouple clamping component is performed at a position far away from the first carbon rod 21 or the second carbon rod 22. After clamping the thermocouple wire Push the telescopic pole 52 toward the direction close to the first carbon rod 21, and adjust the height of the telescopic pole 52 according to the relative position relationship between the diameter of the thermocouple wire and the first carbon rod 21. This process can be Defined as a rough adjustment process. After the rough adjustment is completed, the telescopic pole 52 is pushed in a manner parallel to the sliding direction of the second carbon rod 22, and the third insulating slider 55 is at the position of the slide rail 11. After being adjusted, the basic requirement for the adjustment of this position is that the thermocouple wire does not touch the first carbon rod 21.
[0034] The control power supply circuit is in the energized state. It is understandable that the output voltage of the auto-voltage regulator 100 should be adjusted to match the specifications of the thermocouple wire to be welded, and the push block 4 should be pushed to make the second carbon rod 22 Sliding toward the first carbon rod 21, when the tip structures of the two carbon rods touch together, a high frequency is formed in the gap between the tip of the first carbon rod 21 and the tip of the second carbon rod 22 High-voltage arc. During this arc generation process, the thermocouple wire is not in the arc space, and then slowly drive the push block 4 to move it away from the first carbon rod 21 by 2mm-5mm. During the first process, it is necessary to ensure that the arc is always generated without interruption. At this time, the operator controls the spherical hinge 53 to change its degree of freedom, that is, adjust its pitch angle, swing angle and other angles to make the thermocouple wire The flat end is always in the high-frequency and high-voltage arc, and the twist-shaped sintering forms the thermocouple head. During the arc formation and the welding process of the thermocouple wire, the operator uses the protective lens 61 on the baffle 6 to pair Observe the welding situation.
[0035] The time after arcing can be controlled according to the thickness of the thermocouple wire. Specifically, if the thermocouple wire is thick, the welding head needs to be larger and the arc holding time is slightly longer; the thermocouple wire is thin, and the arc holding time is short after the arc is generated. . After welding, adjust the output voltage of the auto-voltage regulator 100 to 0V, turn off the power switch 103, and then remove the thermocouple wire.
[0036] In the welding process of the thermocouple wire, when the thermocouple wire passes through the arc for the first time and the end of the thermocouple wire is heated to redness, the surface is dipped in sodium tetraborate and then placed in the arc area again. The inventor verifies the thermocouple after welding, and its indication error meets the accuracy level of the working thermocouple.
[0037] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above advantageous methods can be freely combined and superimposed.
[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Inside. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be made. It is regarded as the protection scope of the present invention.
