Open gas protection integrated high-frequency coil

Abstract

The utility model discloses an open gas protection integrated high-frequency coil, which relates to the field of high-frequency coil welding and comprises an induction body, the induction body is mounted on a power supply base, and power is supplied to the induction body through the power supply base; a first isolation belt and a second isolation belt are sequentially formed in an inner cavity of the induction body from outside to inside, a water flow cavity is formed between the outer wall of the first isolation belt and the inner wall of the induction body, and the water flow cavity achieves water flow circulation through an external water inlet pipe and an external water outlet pipe. An air flow cavity is formed between the inner wall of the first isolation belt and the outer wall of the second isolation belt, the water flow cavity and the air flow cavity are separated through the first isolation belt, the bottom of the air flow cavity is connected with an air inlet pipe used for introducing shielding gas, and a welding induction hole is formed in the inner side of the second isolation belt in a penetrating mode and used for placing a welding part; and the airflow cavity is communicated with the welding induction hole. According to the utility model, only one group of open-type high-frequency coils is needed to realize synchronous heating and shielding gas introduction.

Description

Technical Field

[0001] The utility model relates to the field of high-frequency coil welding, in particular to an open gas-protected integrated high-frequency coil. Background Art

[0002] High-frequency welding refers to a welding method that uses the resistance heat generated by high-frequency current flowing through the contact surface of the workpiece and applies pressure (or no pressure) to connect the metal of the workpiece. High-frequency welding can be divided into contact high-frequency welding and induction high-frequency welding according to the way the high-frequency current generates heat in the workpiece. In induction high-frequency welding, the high-frequency current generates an induced current in the workpiece through the coupling effect of the induction coil outside the workpiece.

[0003] The existing high-frequency coils currently use a copper tube winding or square tube welding structure, which can only realize a single high-frequency heating operation mode. Without the help of other auxiliary accessories, the product will have obvious high-temperature oxidation problems due to the lack of gas protection. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide an open gas-protected integrated high-frequency coil, which can realize high-frequency welding heating and gas protection at the same time.

[0005] The purpose of the utility model is achieved through the following technical solutions: this open gas-protected integrated high-frequency coil includes an induction body, which is installed on a power supply base, and the induction body is powered by the power supply base; the inner cavity of the induction body is formed with a first isolation zone and a second isolation zone from the outside to the inside, a water flow cavity is formed between the outer wall of the first isolation zone and the inner wall of the induction body, and the water flow cavity realizes water circulation through an external water inlet pipe and a water outlet pipe; an air flow cavity is formed between the inner wall of the first isolation zone and the outer wall of the second isolation zone, the water flow cavity and the air flow cavity are separated by the first isolation zone, the bottom of the air flow cavity is connected to the air inlet pipe for introducing protective gas, a welding induction hole is penetrated on the inner side of the second isolation zone for placing welding parts, and a plurality of air outlet holes are also penetrated on the second isolation zone to connect the air flow cavity with the welding induction hole.

[0006] As a further technical solution, a water inlet hole for installing a water inlet pipe and a water outlet hole for installing a water outlet pipe are formed through the side wall of the sensing body.

[0007] As a further technical solution, an air inlet hole for installing an air inlet pipe is provided at the bottom of the air flow cavity.

[0008] As a further technical solution, when the welding part is placed in the welding induction hole, the distance between the air outlet and the welding part is less than or equal to 3 mm.

[0009] As a further technical solution, a sealing slot is provided on the top end surface of the sensing body for embedding and installing a water channel sealing cap to seal the water flow cavity relative to the outside.

[0010] As a further technical solution, an air path cover is installed at a position on the top of the sensing body corresponding to the air flow cavity, so that the air flow cavity is sealed relative to the outside.

[0011] As a further technical solution, an arched water flow buffer section is provided at positions of both the water inlet pipe and the water outlet pipe close to the sensing body.

[0012] As a further technical solution, a clamping block is installed on the power supply base to clamp and fix the water inlet pipe and the water outlet pipe.

[0013] As a further technical solution, a positioning groove is provided on the power supply base for snapping into the induction body.

[0014] The beneficial effects of the utility model are:

[0015] 1. The first isolation zone and the second isolation zone are set in the induction body (as a coil) to form a double-layer isolation structure, while retaining the strong magnetic flux function with instantaneous polarity change. The inner ring increases the circulating airflow of the protective gas in the welding area. High-frequency welding heating and gas protection can be achieved through only one set of coil structures;

[0016] 2. The shielding gas only needs to be kept ventilated during the welding process, and the outlet is 3mm away from the welding position, which allows nitrogen to wrap the welding area more easily. The use of nitrogen inflation and exhaust is eliminated during the welding process, and the welding efficiency is higher;

[0017] 3. In the welding process, oxygen and welding materials are isolated from direct contact, which effectively avoids high-temperature oxidation. The previously commonly used high-frequency coils have 20% to 23% poor welding, which is reduced to 6% to 7% after the implementation of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the power supply base in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the sensing body in the utility model.

[0021] Explanation of the accompanying drawings: sensing body 1, water flow cavity 11, water inlet hole 111, water outlet hole 112, air flow cavity 12, air inlet hole 121, air outlet hole 122, welding sensing hole 13, first isolation zone 14, second isolation zone 15, sealing slot 16, water channel sealing cover 2, air channel sealing cover 3, air inlet pipe 4, water inlet pipe 5, water outlet pipe 6, power supply base 7, clamping block 71, positioning slot 72, water flow buffer section 8. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below with reference to the accompanying drawings:

[0023] Example: As shown in the attached Figures 1 to 3 As shown, this open gas-protected integrated high-frequency coil includes an induction body 1, a water flow cavity 11, a water inlet hole 111, a water outlet hole 112, an air flow cavity 12, an air inlet hole 121, an air outlet hole 122, a welding induction hole 13, a first isolation zone 14, a second isolation zone 15, a sealing slot 16, a water channel sealing cover 2, an air channel sealing cover 3, an air inlet pipe 4, a water inlet pipe 5, a water outlet pipe 6, a power supply base 7, a clamping block 71, a positioning groove 72 and a water flow buffer section 8.

[0024] Reference Figure 1 The induction body 1 is inserted into the positioning groove 72 provided on the power supply base 7 , and the power supply base 7 is used to supply power to the induction body 1 .

[0025] like Figure 3 As shown, the inner cavity of the induction body 1 is formed with a first isolation zone 14 and a second isolation zone 15 from the outside to the inside, and a water flow cavity 11 is formed between the outer wall of the first isolation zone 14 and the inner wall of the induction body 1. The water flow cavity 11 is sealed at the bottom and open at the top. Preferably, three cover slots 16 are provided on the top end surface of the induction body 1, and the water channel cover 2 can be embedded and installed to make the water flow cavity 11 sealed relative to the outside. A water inlet hole 111 and a water outlet hole 112 are provided through the side wall of the induction body 1. The water inlet hole 111 is connected to an external water inlet pipe 5, and the water outlet pipe 6 is installed at the water outlet hole 112. The water flow cavity 11 realizes cooling water circulation through the externally connected water inlet pipe 5 and water outlet pipe 6.

[0026] Furthermore, an airflow cavity 12 is formed between the inner wall of the first isolation zone 14 and the outer wall of the second isolation zone 15. The water flow cavity 11 is separated from the airflow cavity 12 by the first isolation zone 14. An air inlet hole 121 is provided at the bottom of the airflow cavity 12 for installing an air inlet pipe 4, and the protective gas is introduced into the airflow cavity 12 by the air inlet pipe 4. An air circuit cover 3 is installed at the top of the induction body 1 at a position corresponding to the airflow cavity 12, so that the airflow cavity 12 is sealed relative to the outside.

[0027] The second isolation zone 15 has a welding induction hole 13 formed inside for inserting the welding piece, and the second isolation zone 15 also has at least two air outlet holes 122 formed therein to connect the air flow cavity 12 with the welding induction hole 13. Preferably, when the welding piece is inserted into the welding induction hole 13, the distance between the air outlet hole 122 and the welding piece is 3 mm.

[0028] Preferably, if Figure 1 As shown, an arched water flow buffer section 8 is provided at the position of both the water inlet pipe 5 and the water outlet pipe 6 near the sensing body 1 to mitigate the impact of water flow. A clamping block 71 is installed on the power supply base 7 to clamp and fix the water inlet pipe 5 and the water outlet pipe 6.

[0029] The working process of this utility model:

[0030] During welding, the induction body 1 is placed on the power supply base 7. The induction body 1, the water channel cover 2, and the gas channel cover 3 form an annular enclosed space, forming an annular magnetic field. The induction body 1 is used as a high-frequency coil. During welding, the water inlet pipe 5, the outer ring of the induction body 1, and the water outlet pipe 6 form a circulating water circuit, and the induction body 1 is cooled by water. At the same time, a certain flow of nitrogen is introduced into the inner ring of the induction body 1 (i.e., the air flow cavity 12) through the air inlet pipe 4, and then the nitrogen is discharged through the oblique air outlet holes 122 on the inner wall of the induction body 1, so that the inner ring forms a gas-protected gas field. Finally, only one set of open high-frequency coils is needed to achieve simultaneous heating and ventilation.

[0031] Since direct contact between oxygen and welding materials is isolated during welding, high-temperature oxidation is effectively avoided. The previously commonly used high-frequency coils have 20% to 23% poor welding, which is reduced to 6% to 7% after the implementation of the utility model.

[0032] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. An open gas-protected integrated high-frequency coil, characterized in that: The invention comprises a sensing body (1), wherein the sensing body (1) is mounted on a power supply base (7), and the power supply base (7) is used to supply power to the sensing body (1); the inner cavity of the sensing body (1) is formed with a first isolation zone (14) and a second isolation zone (15) in sequence from the outside to the inside, and a water flow cavity (11) is formed between the outer wall of the first isolation zone (14) and the inner wall of the sensing body (1), and the water flow cavity (11) realizes water circulation through an externally connected water inlet pipe (5) and a water outlet pipe (6); the first isolation zone (1 4) An airflow cavity (12) is formed between the inner wall and the outer wall of the second isolation zone (15); the water flow cavity (11) and the airflow cavity (12) are separated by the first isolation zone (14); the bottom of the airflow cavity (12) is connected to the air inlet pipe (4) for introducing protective gas; a welding induction hole (13) is provided through the inner side of the second isolation zone (15) for placing a welding piece; and a plurality of air outlet holes (122) are provided through the second isolation zone (15) so that the airflow cavity (12) and the welding induction hole (13) are connected.

2. The open gas protection integrated high frequency coil according to claim 1, characterized in that: A water inlet hole (111) for installing a water inlet pipe (5) and a water outlet hole (112) for installing a water outlet pipe (6) are provided through the side wall of the sensing body (1).

3. The open gas protection integrated high frequency coil according to claim 1, characterized in that: An air inlet hole (121) for installing an air inlet pipe (4) is provided at the bottom of the air flow cavity (12).

4. The open gas protection integrated high frequency coil according to claim 1, characterized in that: When the welding part is placed in the welding induction hole (13), the distance between the air outlet hole (122) and the welding part is less than or equal to 3 mm.

5. The open gas protection integrated high frequency coil according to claim 1, characterized in that: The top end surface of the sensing body (1) is provided with a sealing slot (16) for embedding and installing the water channel sealing cover (2) so that the water flow cavity (11) is sealed relative to the outside.

6. The open gas protection integrated high frequency coil according to claim 1, characterized in that: An air path sealing cover (3) is installed at a position on the top of the sensing body (1) corresponding to the air flow cavity (12), so that the air flow cavity (12) is sealed relative to the outside.

7. The open gas protection integrated high frequency coil according to claim 1, characterized in that: The water inlet pipe (5) and the water outlet pipe (6) are both provided with an arched water flow buffer section (8) at positions close to the sensing body (1).

8. The open gas protection integrated high frequency coil according to claim 1, characterized in that: A clamping block (71) is installed on the power supply base (7) and is used to clamp and fix the water inlet pipe (5) and the water outlet pipe (6).

9. The open gas protection integrated high frequency coil according to claim 1, characterized in that: The power supply base (7) is provided with a positioning groove (72) for snapping into the induction body (1).

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