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CN-122007532-A - Silver-based induction brazing device for high-performance hard tube assembly

CN122007532ACN 122007532 ACN122007532 ACN 122007532ACN-122007532-A

Abstract

The invention provides a silver-based induction brazing device of a high-performance hard tube assembly, which relates to the technical field of welding equipment, and comprises a welding platform, wherein a box cover is arranged at the upper end of the welding platform, the upper end of the welding platform is provided with a limiting unit, wherein the limiting unit can clamp the pipe, the welding unit is arranged above the welding platform, and the pipe is heated and welded by an induction heating coil in the welding unit. Through setting up by the spacing unit of two-way cylinder driven synchronous centering formula, can realize waiting to weld the automatic centering clamp location of hard tube, effectively solved the problem that the hard tube centre gripping axiality is poor, the welding process easily appears displacement deviation in the current brazing device, promoted the centering precision of soldered connection by a wide margin, avoid the defect such as rosin joint, the seepage that lead to because of the centering deviation, ensured sealing performance and structural strength after the hard tube assembly brazes. Meanwhile, the flexible high-temperature-resistant clamping base plate arranged on the inner side of the clamping jaw can prevent the outer wall of the hard tube from being scratched, pressed and the like in the clamping process.

Inventors

  • JIAN QIONG
  • XIE FAMING
  • WU ZHAOPING
  • GONG JING
  • HUANG HAOJIE

Assignees

  • 江西福事特液压股份有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. The silver-based induction brazing device for the high-performance hard tube assembly is characterized by comprising a welding platform (1), wherein a box cover (4) is arranged at the upper end of the welding platform (1), a limiting unit (7) is arranged at the upper end of the welding platform (1), a tube (6) can be clamped by the limiting unit (7), a welding unit (8) is arranged above the welding platform (1), and the tube (6) is heated and welded by an induction heating coil (87) in the welding unit (8).
  2. 2. The silver-based induction brazing device for the high-performance hard tube assembly according to claim 1, wherein the limiting unit (7) comprises a bidirectional air cylinder (71), the bidirectional air cylinder (71) is detachably arranged on the side face of the box cover (4), clamping modules are arranged on two output arms of the bidirectional air cylinder (71), and the clamping modules can clamp the tube (6) for fixing.
  3. 3. The silver-based induction brazing device for the high-performance hard tube assembly according to claim 2, wherein the clamping module comprises a connecting arm (72), the connecting arm (72) is detachably arranged on an output arm of the bidirectional cylinder (71), clamping jaws (73) are fixedly connected to the surface of the connecting arm (72), and the two clamping jaws (73) can clamp a tube (6) under the driving action of the bidirectional cylinder (71).
  4. 4. The silver-based induction brazing device for the high-performance hard tube assembly, as set forth in claim 3, wherein the surface of the clamping jaw (73) is provided with a groove, the surface of the clamping jaw (73) is provided with a clamping pad (74), the clamping pad (74) is made of flexible materials, one side of the clamping pad (74) is fixedly connected with a clamping strip (75), and the clamping strip (75) is inserted into the clamping jaw (73) to fix the clamping pad (74) on one side of the clamping jaw (73).
  5. 5. The silver-based induction brazing device of the high-performance hard tube assembly, as set forth in claim 4, wherein the clamping jaw (73) is provided with a positioning groove, a limiting column (76) is inserted on the surface of the clamping strip (75) in a sliding manner, a spring is fixedly connected between the limiting column (76) and the clamping strip (75), and the clamping pad (74) can be fixed on the clamping jaw (73) by clamping the limiting column (76) in the positioning groove under the driving of the elastic force of the spring.
  6. 6. The silver-based induction brazing device of the high-performance hard tube assembly, as set forth in claim 1, is characterized in that the bottom of the welding platform (1) is provided with a movable wheel (2), the bottom of the welding platform (1) is provided with a supporting foot cup (3), and the movable wheel (2) of the welding platform (1) can be supported by the supporting foot cup (3).
  7. 7. The silver-based induction brazing device for a high-performance hard tube assembly according to claim 1, wherein the welding unit (8) comprises a protective cover (85), an aperture (84) is arranged at the upper end of the protective cover (85), the center size of the welding unit can be adjusted by using the aperture (84), the tube (6) can be inserted into the protective cover (85) from the center of the aperture (84), the induction heating coil (87) can be inserted into the protective cover (85) from the outer side of the protective cover (85) to heat the tube (6), and an induction driving module is arranged in the box cover (4), wherein the induction driving module can drive the induction heating coil (87) to heat.
  8. 8. The silver-based induction brazing device of the high-performance hard tube assembly according to claim 7, wherein an installation frame (82) is arranged at the upper end of the welding platform (1), a driving air cylinder (81) is fixedly connected to the upper end of the installation frame (82), a connecting rod (83) is rotatably arranged at the output end of the driving air cylinder (81), and a diaphragm (84) can be driven to rotate by the other end of the connecting rod (83) to adjust the size of the center.
  9. 9. The silver-based induction brazing device for the high-performance hard tube assembly according to claim 8, wherein a temperature measuring unit (86) is arranged on the side face of the protective cover (85), and the temperature measuring unit (86) can detect heat emitted by the induction heating coil (87).
  10. 10. The silver-based induction brazing device for the high-performance hard tube assembly, as set forth in claim 9, wherein a console (5) is mounted at the upper end of the welding platform (1), and the console (5) can control the bidirectional air cylinder (71), the induction heating coil (87) and the driving air cylinder (81).

Description

Silver-based induction brazing device for high-performance hard tube assembly Technical Field The invention relates to the technical field of welding equipment, in particular to a silver-based induction brazing device for a high-performance hard tube assembly. Background The hard tube assembly is used as a core connecting component in hydraulic transmission, pneumatic control, fuel oil transmission, refrigeration cycle and other systems, is widely applied to the fields of engineering machinery, automobile manufacturing, aerospace, ship heavy industry and the like, and the sealing performance, structural strength and pressure-resistant stability of a welded joint directly determine the operation reliability and service life of the whole system. Silver-based induction brazing has become a mainstream process for welding and processing high-precision hard tube assemblies by virtue of the advantages of good brazing seam forming quality, small heat affected zone of base metal, excellent joint corrosion resistance and fatigue resistance, suitability for dissimilar metal welding and the like. At present, a silver-based induction brazing device for processing a hard tube assembly in the industry mainly adopts a structure form of single-side driving clamping and double-side asynchronous clamping, so that the coaxiality of a hard tube to be welded and an induction heating coil is difficult to ensure in the actual production process, and the problem of eccentric clamping and interface centering deviation is easy to occur. Meanwhile, in the induction heating process, the thermal stress generated by heating the hard tube is easy to cause displacement movement of the tube body, further aggravate centering errors of the soldered joint, and easily cause defects of solder joint cold joint, incomplete penetration, discontinuous molding and the like. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a silver-based induction brazing device for a high-performance hard tube assembly. In order to achieve the purpose, the silver-based induction brazing device for the high-performance hard tube assembly comprises a welding platform and is characterized in that a box cover is arranged at the upper end of the welding platform, a limiting unit is arranged at the upper end of the welding platform, a tube can be clamped by the limiting unit, a welding unit is arranged above the welding platform, and the tube is heated and welded by an induction heating coil in the welding unit. Preferably, the limiting unit comprises a bidirectional cylinder, the bidirectional cylinder is detachably arranged on the side face of the box cover, and the two output arms of the bidirectional cylinder are provided with clamping modules, and the clamping modules can be used for clamping the pipe for fixing. Preferably, the clamping module comprises a connecting arm, the connecting arm is detachably arranged on an output arm of the bidirectional cylinder, a clamping jaw is fixedly connected to the surface of the connecting arm, and the two clamping jaws can clamp a pipe under the driving action of the bidirectional cylinder. Preferably, the surface of clamping jaw is seted up flutedly, the surface of clamping jaw is provided with the centre gripping backing plate, and wherein the centre gripping backing plate is high temperature resistant flexible material, one side fixedly connected with card strip of centre gripping backing plate, the card strip inserts clamping jaw and fixes the centre gripping backing plate in one side of clamping jaw. Preferably, a positioning groove is formed in the clamping jaw, a limiting column is inserted on the surface of the clamping strip in a sliding mode, a spring is fixedly connected between the limiting column and the clamping strip, and the clamping base plate can be fixed on the clamping jaw by means of the fact that the limiting column is clamped in the positioning groove through elastic force of the spring. Preferably, the bottom of the welding platform is provided with a movable wheel, the bottom of the welding platform is provided with a supporting foot cup, and the movable wheel of the welding platform can be supported by the supporting foot cup. Preferably, the welding unit comprises a protective cover, an aperture is arranged at the upper end of the protective cover, the size of the center of the aperture can be adjusted by utilizing the rotation aperture, the protective cover can be inserted into the tube from the center of the aperture, the induction heating coil can be inserted into the protective cover from the outer side of the protective cover to heat the tube, and an induction driving module is arranged in the box cover and can drive the induction heating coil to heat. Preferably, the upper end of welding platform fixed mounting has the mounting bracket, the upper end fixedly connected with drive cylinder of mounting bracket, drive cylinder's output rotates installs th