Induction brazing auxiliary device for high-voltage switch product
By using elastic retaining structure and inflation protection structure in induction brazing auxiliary devices, the problem of high cost in the induction brazing device in the prior art is solved, low-cost and efficient welding position determination and welding process control are achieved, and welding is improved security and accuracy.
Patent Information
- Application Number
- CN202411309446.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2024-12-31
AI Technical Summary
The existing induction brazing device determines the welding position through a laser displacement sensor and uses a motor as a power source, resulting in high manufacturing and use costs.
A sensor brazing auxiliary device for high-voltage switch products is designed. By setting an elastic holding structure between the joint clamping assembly and the guide seat, the pipe fittings are abutted on the joint by manpower, combining the inflation protection structure and the guide through hole design. The determination of welding position and the control of welding process are realized, and the dependence on motors and laser displacement sensors are avoided.
It reduces manufacturing and use costs, improves the accuracy of welding position and the safety of welding process, simplifies the operation process, and reduces the complexity of the equipment.
Smart Images
Figure CN119216693A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of auxiliary devices for brazing, and in particular to an auxiliary device for induction brazing of high-voltage switch products. Background Art
[0002] In the prior art, the gas pipe welding used in the gas connection structure of GIS combined electrical appliances and column circuit breakers is mainly made by flame brazing of brass joints and copper pipes, such as Figure 1-Figure 6 As shown, the joint 48 is a columnar part, the end of the joint 48 has a radial flange 53, and a stepped joint through hole 52 is provided inside. The solder is a solder ring 50 that matches the shape of the joint through hole. When welding begins, the solder ring 50 is placed on the step surface 51, and then the pipe 49 is inserted into the joint through hole 52 and abuts against the solder ring. After confirming the abutment, flame brazing is performed at 2-3mm away from the end of the joint 48 on one side of the flange. After the temperature reaches the melting point of the solder, the solder melts and overflows and fills the gap between the joint and the pipe. After filling the gap, the flame is turned off and the welding is completed after the solder cools. The flame brazing process is simple and has low operating requirements, but the flame brazing working environment is harsh, and it is difficult to control the welding temperature during flame brazing. It is easy for the temperature to rise too high, resulting in holes in the internal material of the lead brass joint being burned and causing air leakage.
[0003] The Chinese invention patent with application publication number CN116604121 A provides an automatic brazing device for metal round tubes, which includes a base, a main workbench, a fixture support and a brazing support are connected to the base; a self-centering fixture A is connected to the fixture support, and a round tube a is detachably connected to the self-centering fixture A; a self-centering fixture B is connected to a first feeding mechanism, the first feeding mechanism is connected to the main workbench, and a round tube b is detachably connected to the self-centering fixture B, and an arc-shaped brazing head of the induction brazing equipment is concentric with the round tubes a and b. After the round tubes a and b are centered and aligned by the self-centering fixture, the first feeding mechanism moves the round tube b so that the round tube b is located in a position convenient for welding with the round tube a, and then the round tubes a and b are welded by the induction brazing device connected to the brazing support.
[0004] The device welds round tubes by induction brazing. Compared with the existing technology, the induction brazing site does not use open flames or flammable and explosive acetylene gas. Welders are no longer subjected to the high temperature of open flames in summer, and the comfort and safety of the work site are effectively improved. In addition, the temperature control of induction brazing is simple, which can effectively avoid the problem of excessive temperature rise causing holes in the internal materials of the lead brass joint to cause air leakage. However, since the induction brazing device of the prior art determines the welding position through a laser displacement sensor and uses a motor as a power source to move the round tube through a driving mechanism, the manufacturing and use costs of the device are high. Summary of the invention
[0005] The purpose of the present invention is to provide an induction brazing auxiliary device for high-voltage switch products to solve the problem that the induction brazing device in the prior art determines the welding position through a laser displacement sensor, uses a motor as a power source to move the round tube through a driving mechanism, and has high manufacturing and use costs.
[0006] The induction brazing auxiliary device for high-voltage switch products of the present invention includes a base, a guide seat is provided on the base, a joint clamping assembly is installed on the guide seat for guiding and moving, the joint clamping assembly includes a joint clamp that can be used to clamp the joint, the base is also provided with a clamp seat, the clamp seat is provided with a pipe clamping assembly that can be used to clamp the pipe fitting, when the joint clamping assembly clamps the joint and the pipe clamping assembly clamps the pipe fitting, the joint clamped by the joint clamping assembly is coaxial with the pipe fitting clamped by the pipe clamping assembly, an elastic retaining structure is provided between the joint clamping assembly and the guide seat, the elastic retaining structure provides an elastic force for the joint clamping assembly to move in the direction of the pipe clamping assembly, and the joint clamping assembly is provided with a stopping structure to prevent the joint clamping assembly from disengaging from the guide seat in the guiding movement direction.
[0007] Furthermore, a guide through hole is provided on the guide seat, and the joint clamping assembly includes a clamp guide member capable of axially guiding and moving in the guide through hole, the clamp guide member is a cylindrical stepped member, and the outer surface of the cylindrical stepped member is divided into a large diameter end, a middle diameter end, and a small diameter end, the joint clamp is fixedly connected to the end surface of the large diameter end close to the pipe clamping assembly, the diameter of the middle diameter end of the cylindrical stepped member is the same as the diameter of the guide through hole so as to guide and move in the axial direction of the guide through hole, and the stopping structure includes a limit member connected to the large diameter end of the cylindrical stepped member and the small diameter end of the cylindrical stepped member.
[0008] Furthermore, the elastic retaining structure includes a spring seat and an elastic member, the spring seat is a cylindrical member with one end open and the other end closed, the cylindrical member is fixedly connected to the guide seat through the open end and is coaxial with the guide through hole, the closed end of the cylindrical member is provided with an avoidance hole for the small diameter end of the cylindrical step member to pass through, the elastic member is installed in the annular space between the cylindrical member and the small diameter end of the clamp guide member and is pressed between the inner side surface of the closed end of the cylindrical member and the end surface of the middle diameter end of the cylindrical step member close to the small diameter end.
[0009] Furthermore, an air passage is provided in the joint clamping assembly, one end of the joint clamping assembly away from the joint fixture is sealed and connected to the inflation joint, the interior of the inflation joint is connected to the air passage of the joint clamping assembly, and the other end of the inflation joint is provided with an inflation port.
[0010] Furthermore, an axially extending air passage is provided in the cylindrical stepped part, which extends to the joint clamp and is connected with the inner cavity of the joint when in use. One end of the cylindrical stepped part away from the joint clamp is sealed and connected to the inflation joint, the interior of the inflation joint is connected with the air passage, and an inflation port is provided at the other end of the inflation joint.
[0011] Furthermore, the inflation joint constitutes the limiting member.
[0012] Furthermore, the joint clamp includes a clamp base and a hoop installed on the outside of the clamp base, the end of the clamp base facing the fixture seat is used for positioning with the joint stop, and the hoop includes a plurality of circumferentially arranged elastic hoop arms that can undergo radial elastic deformation to radially tighten the joint.
[0013] Furthermore, a V-shaped groove is provided on the upper side of the clamp seat for centering the pipe fitting, and the pipe fitting clamping assembly includes a quick clamp, which is located above the V-shaped groove to press the pipe fitting into the V-shaped groove.
[0014] Furthermore, the cylindrical stepped member can be rotatably mounted on the guide seat around its own axis.
[0015] Furthermore, a coaxial shielding plate is fixedly connected to the end surface of the large diameter end of the cylindrical stepped member away from the joint fixture.
[0016] The present invention provides a new induction brazing auxiliary device for high-voltage switch products. The induction brazing device in the prior art determines the welding position by a laser displacement sensor and uses a motor to move the round tube. The present device uses an elastic retaining structure arranged between the joint clamping assembly and the guide seat to press the joint onto the pipe fitting, so that the joint and the pipe fitting are kept in a suitable welding position. Compared with the prior art, the present device uses manpower to abut the pipe fitting against the joint during welding, and the welding position can be determined to be correct by observing that the joint clamping assembly moves backward. There is no need to use a motor and a laser displacement sensor to determine the welding position, and the manufacturing and use costs are low. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of a brazed joint of the present invention; Figure 2 It is a schematic diagram of the structure of placing a solder ring in a brazed joint of the present invention; Figure 3 It is a schematic diagram of the structure of inserting a pipe into a brazed joint of the present invention; Figure 4 It is a structural schematic diagram of the brazed joint of the present invention, after a solder ring is placed in the joint, and then a pipe is inserted; Figure 5 It is a schematic diagram of the structure of the brazing gas pipe welding assembly part of the present invention; Figure 6 It is a cross-sectional view of the brazed gas pipe welding part of the present invention; Figure 7 It is a structural schematic diagram of the induction brazing auxiliary device for high-voltage switch products of the present invention; Figure 8It is a front view of the base of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig. 9 A top view of the base of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.10 A side view of the base of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.11 A front view of a guide seat of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.12 A side view of a guide seat of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.13 A bottom view of a guide seat of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.14 A front view of a shielding plate of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.15 A side view of a shielding plate of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.16 A cross-sectional view of a cylindrical stepped member of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig.17 A cross-sectional view of a fixture base of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig.18 A side view of a fixture base of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig.19 A cross-sectional view of an air distribution plate of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig. 20 A side view of the gas distribution plate of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.21 A cross-sectional view of a spring seat of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig. 22 A side view of a spring seat of the induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig.23 It is a front view of the inflated joint of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.24 It is a front view of the inflatable front joint of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.25 A cross-sectional view of a hoop sleeve of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig.26A side view of a hoop of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig. 27 A top view of a fixture seat of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.28 A side view of a fixture seat of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.29 A bottom view of a fixture seat of the induction brazing auxiliary device for high-voltage switch products of the present invention; Fig.30 A side view of a quick fixture of an induction brazing auxiliary device for a high-voltage switch product of the present invention; Fig.31 The present invention is a bottom view of a quick fixture of an induction brazing auxiliary device for a high-voltage switch product of the present invention.
[0018] In the figure: 1, base; 2, guide seat; 3, fixture seat; 4, shielding plate; 5, cylindrical step piece; 6, hoop; 7, air distribution plate; 8, fixture base; 9, spring seat; 10, quick fixture; 11, joint after inflation; 12, valve; 13, joint before inflation; 14, fixture base; 15, spring; 16, pipe fitting clamping assembly; 17, joint clamping assembly; 18, pick; 19, bottom plate hole; 20, sliding long groove; 21, fixed plate connecting groove; 22, fixed plate; 23, bottom plate; 24, guide through hole; 25, spring seat connecting screw hole; 26, bottom plate connecting screw hole; 27, shielding plate avoidance hole; 28, cylindrical step piece large diameter end; 29, middle diameter end of cylindrical stepped part; 30, small diameter end of cylindrical stepped part; 31, air passage; 32, air distribution hole; 33, avoidance hole; 34, connecting flange; 35, connecting flange hole; 36, external thread of joint after inflation; 37, internal thread of joint after inflation; 38, inflation port; 39, hoop arm; 40, clamp block connecting screw hole; 41, quick clamp connecting screw hole; 42, bottom plate connecting screw hole; 43, V-shaped groove; 44, clamp base connecting groove; 45, inflation through hole; 46, inflation joint; 47, clamp block; 48, joint; 49, pipe fitting; 50, solder ring; 51, step surface; 52, joint through hole; 53, radial flange. DETAILED DESCRIPTION
[0019] The specific concept of the induction brazing auxiliary device for high-voltage switch products of the present invention is as follows: The induction brazing auxiliary device for high-voltage switch products of this device can center the joint clamped by the joint clamping assembly and the pipe clamped by the pipe clamping assembly, so that the joint and the pipe are coaxial. Since an elastic retaining structure is provided between the joint clamping assembly and the base, the elastic retaining structure will provide an elastic force for the joint clamping assembly to move in the direction of the pipe clamping assembly, so that the pipe and the joint will be pressed by the elastic retaining structure after abutting, ensuring the correct welding position. Compared with the prior art, this device uses manpower to abut the pipe against the joint during welding, and the correct welding position can be determined by observing that the joint clamping assembly moves backward. There is no need to use a motor and a laser displacement sensor to determine the welding position, and the manufacturing and use costs are low.
[0020] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0021] In Example 1, by Figures 7 to 13 , Figures 16 to 18 , Fig.21 , Fig. 22 , Fig.25 , Fig.26 As shown, this embodiment is mainly a specific introduction to the joint clamping assembly 17. The base 1 in this embodiment includes a bottom plate 23 for supporting the guide seat 2 and the fixture seat 3, and a fixing plate connecting groove 21 is provided on the bottom plate 23. A fixing plate 22 vertically located below the bottom plate 23 is fixedly connected through the fixing plate connecting groove 21, and the fixing plate 22 is used to fix the device on the workbench. The guide seat 2 is provided with a bottom plate connecting screw hole 26, and the bottom plate 23 is provided with a bottom plate hole 19 for cooperating with the bottom plate connecting screw hole 26. The guide seat 2 is fixedly connected to the bottom plate 23 by bolts. The joint clamping assembly 17 in this embodiment includes a clamp guide that can guide and move on the guide seat 2, and the joint clamp is connected to one end of the clamp guide.
[0022] In one embodiment, the joint clamp is a clamp, which includes two clamp bodies, a clamp hole matching the shape of the joint is provided between the two clamp bodies, flanges matching each other are provided on the two clamp bodies, coaxial light holes are provided in the flanges, bolts pass through the light holes and connect nuts to connect the two parts of the clamp together, and after the joint is placed in the clamp hole, the joint can be clamped and centered by tightening the nuts. In another embodiment, the joint clamp includes a clamp base 14 and a clamp sleeve 6, the clamp base 14 is forcibly installed or threadedly connected to the clamp guide, the outer side of the clamp base 14 is provided with external threads, the clamp sleeve 6 is a clamp tube, and flanges extending radially inward are provided at both ends of the clamp sleeve 6, the flange at one end of the clamp arm can be threadedly matched with the external thread of the clamp base 14, the clamp sleeve 6 is installed on the clamp base 14, and the other end of the clamp sleeve is split into a plurality of elastic clamp arms 39 with the same axial spacing, and the flanges at this end are also evenly separated. During welding, the joint 48 is first pressed against the end face of the fixture base 14 facing the fixture seat, and then the hoop 6 is put on the fixture base 14 and the hoop 6 is tightened. During the process of the hoop 6 being screwed onto the fixture base 14, the hoop arm 39 gradually opens and tightens the radial flange 53 of the joint 48 through the flange.
[0023] In one embodiment, a guide rail is installed on the guide seat, and a guide slider that slides with the guide rail is installed on the fixture guide member. The fixture guide member can slide in the extension direction of the guide rail, and the stop structure is a stop limit plate installed at appropriate positions at both ends of the guide rail. In another better embodiment, in order to reduce manufacturing costs, the guide seat 2 is provided with a guide through hole 24, the fixture guide member is a cylindrical step member 5, and the outer side surface of the cylindrical step member 5 is divided into a cylindrical step member large diameter end 28, a cylindrical step member middle diameter end 29, and a cylindrical step member small diameter end 30. The joint fixture is fixedly connected to the end surface of the cylindrical step member large diameter end 28 close to the pipe clamping assembly 16, and the diameter of the cylindrical step member middle diameter end 29 is the same as the diameter of the guide through hole 24 so that the cylindrical step member can be guided and moved axially in the guide through hole 24. The stop structure includes a limit member connected to the cylindrical step member large diameter end 28 and the cylindrical step member small diameter end 30.
[0024] Based on the above invention concept or embodiment, in embodiment 2, by means of Figure 7 , Figures 11 to 13 , Fig.16 , Fig.21 , Fig. 22 As shown, this embodiment is mainly a specific introduction to the elastic retaining structure. In one embodiment, the elastic retaining structure is a plurality of taut elastic ropes, one end of the elastic rope is connected to the end surface of the guide seat near the small diameter end, and the other end is connected to the end surface of the small diameter end of the cylindrical step member, and the elastic rope provides an elastic force for the cylindrical step member to move toward the pipe clamping assembly.
[0025] In a better embodiment, in order to prevent the cylindrical stepped member from deviating in the guiding direction, the elastic retaining structure includes a spring seat 9 and a spring 15, and the spring seat 9 is a cylinder with one end open and the other end closed. The open end of the spring seat is welded to the guide seat toward the guide seat. In another embodiment, the guide seat 2 is provided with a spring seat connecting screw hole 25 for connecting the spring seat 9, and the open end of the spring seat 9 is provided with a connecting flange 34 extending radially outward, and the connecting flange 34 is provided with a connecting flange hole 35 for matching with the spring seat connecting screw hole, and the spring seat 9 is fixed to the guide seat 2 with the opening facing the guide seat 2 by bolts.
[0026] On the basis of the above-mentioned inventive concept or embodiment, the spring seat 9 is coaxial with the guide through hole 24, and the closed end of the spring seat 9 is provided with an avoidance hole 33 for the small diameter end 30 of the cylindrical stepped member to pass through. The spring 15 is installed in the annular space between the spring seat 9 and the small diameter end 30 of the cylindrical stepped member to press between the inner side surface of the closed end of the spring seat 9 and the end surface of the middle diameter end 29 of the cylindrical stepped member close to the small diameter end 30 of the cylindrical stepped member to provide a horizontal elastic force.
[0027] Based on the above invention concept or embodiment, in embodiment 3, by means of Figure 7 , Fig.16 , Fig.19 , Fig. 20 , Fig.23 , Fig.24 As shown, this embodiment is mainly a specific introduction to the inflatable protection structure. In one embodiment, the joint clamping assembly 17 is a solid piece. In another better embodiment, in order to prevent oxidation at the weld, it is necessary to fill the weld with inert gas. At this time, a gas passage 31 is provided in the joint clamping assembly 17, and one end of the joint clamping assembly 17 away from the joint fixture is sealed and connected to the inflatable joint 46. The inflatable joint 46 is provided with an inflatable through hole 45 connected to the axial through hole of the joint clamping assembly 17, and the other end of the inflatable joint 46 is provided with an inflatable port 38. During welding, the gas passage 31 is connected to the joint 48 and supplies gas to the joint 48.
[0028] When the joint clamping assembly 17 includes a clamp guide, and the clamp guide is a cylindrical stepped member 5, in one embodiment, the cylindrical stepped member 5 is a solid member. In another better embodiment, in order to prevent oxidation at the weld, an inert gas needs to be filled into the weld. At this time, an axially extending gas passage 31 is provided in the cylindrical stepped member 5, and the joint clamp is threaded or welded to the gas passage 31 of the large diameter end 28 of the cylindrical stepped member. The gas passage extends to the joint clamp and is connected to the inner cavity of the joint 48 when in use. The small diameter end 30 of the cylindrical stepped member is away from the large diameter end 28 of the cylindrical stepped member. An external thread is provided at one end. In one embodiment, the inflation joint is integrated, and one end is provided with an internal thread that cooperates with the external thread of the small diameter end of the cylindrical stepped member. The inflation joint is fixed to the small diameter end of the cylindrical stepped member by a threaded connection. The interior of the inflation joint is connected to the gas passage through an inflation hole, and an inflation port is provided at the other end of the inflation joint.
[0029] In another embodiment, the inflatable joint 46 is a split type, which is divided into an inflatable front joint 13 and an inflatable rear joint 11. One end of the inflatable rear joint 11 is provided with an inflatable rear joint internal thread 37 that matches the external thread of the small diameter end of the cylindrical stepped member. The inflatable rear joint 11 is connected to the small diameter end 30 of the cylindrical stepped member through threaded cooperation. The other end of the inflatable rear joint 11 is provided with an inflatable rear joint external thread 36. One end of the inflatable front joint 13 is provided with an inflatable front joint internal thread that matches the inflatable rear joint external thread 36. The inflatable front joint 13 is fixed to the inflatable rear joint 11 through threaded connection. The inflatable front joint 13 and the interior of the inflatable rear joint 11 are connected to the air passage 31 through the inflatable through hole 45. The other end of the inflatable front joint 13 is provided with an inflatable port 38. The inflatable joint 46 constitutes a limiter connected to the small diameter end 30 of the cylindrical stepped member.
[0030] In one embodiment, the gas charging joint can only serve as a passage for gas circulation. In another better embodiment, in order to facilitate the control of the inert gas, a valve 12 for controlling the on and off of the gas is also provided on the gas charging joint 46. Based on the above concept and embodiment, in order to evenly distribute the inert gas at the welding position, a gas distribution plate 6 is provided in the through hole near the back of the joint clamp, and the gas distribution plate 6 has gas distribution holes 32 for evenly dispersing the inert gas charged.
[0031] Based on the above invention concept or embodiment, in embodiment 4, by means of Figures 7 to 10 , Figures 27 to 31As shown, this embodiment is mainly for the specific introduction of the pipe clamping assembly. In one embodiment, the position of the clamp seat is fixed. In another better embodiment, in order to adapt to the relative position between pipes of different lengths and the joint clamping assembly 17, the position of the clamp seat 3 in the parallel direction of the joint clamping assembly 17 and the pipe clamping assembly 16 is adjustable. In one embodiment, the position adjustment method can be to set a sliding long groove 20 extending in the parallel direction of the joint clamping assembly 17 and the pipe clamping assembly 16 on the bottom plate 23, and a bottom plate connecting screw hole 42 corresponding to the sliding long groove 20 is set below the clamp seat 3. When the clamp seat 3 reaches the appropriate position, the clamp seat 3 is locked and fixed by screwing the bolts in the bottom plate connecting screw holes 42. On the base plate 23, in another embodiment, the position adjustment method can also be that a guide rail extending in the parallel direction of the joint clamping assembly and the pipe clamping assembly is set on the base plate, and a slider slidingly matched with the guide rail is set on the clamp seat, and the clamp seat is guided to slide in the extension direction of the guide rail. Flanges for connecting the base are set on both sides of the clamp seat, and the flanges are provided with vertical flange screw holes. The base is provided with long grooves extending in the movement direction of the flange screw holes and matching the flange screw holes. When the clamp seat reaches the appropriate position, bolts are passed through the flange screw holes and the long grooves, and the clamp seat is locked and fixed to the base plate with nuts.
[0032] In one embodiment, the pipe clamping assembly 16 includes a three-jaw chuck fixedly connected to the clamp seat 3, and the pipe is centered by the three-jaw chuck. In another better embodiment, for ease of use, a V-shaped groove is provided on the upper side of the clamp seat for the pipe to be placed in the center, and the pipe clamping assembly includes a quick clamp, which is located above the V-shaped groove to press the pipe into the V-shaped groove. In another embodiment, the fixture seat 3 is split, including a fixture base 8 and a clamping block 47, the upper side of the clamping block is provided with a V-shaped groove 43 for the pipe fitting to be placed and centered, the upper side of the clamping block 8 is provided with a clamping block connecting screw hole 40 and a quick clamp connecting screw hole 41, the clamping block 47 is provided with a fixture base connecting groove 44 that matches the clamping block connecting screw hole 40, the clamping block 47 can be fixedly connected to the fixture base 8 by bolts, and the pipe fitting clamping assembly 16 includes a quick clamp 10, the quick clamp 10 is located above the V-shaped groove 43, and is fixedly connected to the quick clamp connecting screw hole 41 on the fixture base 8 by bolts, and the quick clamp 10 can be guided and moved in the vertical direction and provide a clamping force after abutting against the pipe fitting. If necessary, the clamping blocks 47 of different specifications can be replaced to adapt to the change in the diameter of the pipe fitting.
[0033] Based on the above invention concept or embodiment, in embodiment 5, by means of Figure 7 , Figures 11 to 16As shown, this embodiment is mainly for the specific introduction of the heating method. In one embodiment, the joint clamping assembly 17 can only be guided and moved on the guide seat 2 in the parallel direction between itself and the pipe clamping assembly 16. In another better embodiment, in order to make the heating more uniform during the brazing process, the joint clamping assembly 17 can not only be guided and moved on the guide seat 2 in the parallel direction between itself and the pipe clamping assembly 16, but also be rotatably installed on the guide seat 2 around its own axis.
[0034] When the joint clamping assembly 17 includes a clamp guide, and the clamp guide is a cylindrical stepped member 5. In one embodiment, the cylindrical stepped member 5 can only be guided and moved on the guide seat 2 in the parallel direction between itself and the pipe clamping assembly 16. In another better embodiment, in order to make the heating more uniform during the brazing process, the cylindrical stepped member 5 can not only be guided and moved on the guide seat 2 in the parallel direction between itself and the pipe clamping assembly 16, but also be rotatably installed on the guide seat 2 around its own axis.
[0035] In one embodiment, a coaxial baffle plate 4 is fixedly connected to the end surface of the large diameter end 28 of the cylindrical step part away from the joint clamp to prevent the operator's hands from touching the brazing area and causing injury. The baffle plate 4 is provided with a baffle plate avoidance hole 27 for avoiding the middle diameter end 29 of the cylindrical step part. The baffle plate 4 is also connected to a paddle 18 for facilitating manual rotation of the baffle plate 4 to drive the joint clamping assembly 17 to rotate.
[0036] Based on the above concepts or embodiments, Figure 1-Figure 31As shown, before using the device, the fixing plate is fixed on the brazing table, the guide seat 2 is fixedly connected to the bottom plate 23, a spring seat 9 is fixed on the guide seat 2, the cylindrical stepped piece is inserted into the guide hole of the guide seat 2, the small diameter end 30 of the cylindrical stepped piece passes through the spring seat 9 and is connected to the inflation joint, the air passage 31 in the large diameter end 30 of the cylindrical stepped piece is threadedly connected to the clamp base 14, the joint 48 is abutted against the front side of the clamp base 14, the clamp base is tightened by tightening the hoop 6, an air distribution plate 7 is set in the through hole near the back of the clamp base 14, and a shielding plate 4 is installed on the cylindrical stepped piece. When using the device for welding, first adjust the position of the clamp seat 3 according to the length of the pipe 49, then put the step surface 51 of the joint 48 into the solder ring 50, insert the joint 48 into the joint fixture, clamp and center it, and then put the pipe Insert the fitting 49 into the joint 48 and tighten it until the cylindrical stepped part can be seen moving backward. Select a suitable clamping block 47 to place the pipe fitting into the V-groove 43 for centering. Use the quick clamp 10 to clamp the pipe fitting 49. Then open the valve 12 to fill the inert gas into the gas passage 31. When the inert gas is distributed at the position where the joint 48 and the pipe fitting 49 need to be welded and the joint 48 and the pipe fitting 49 will not be easily oxidized during welding, use the welding device to weld the joint 48 and the pipe fitting 49. At this time, the solder ring 50 begins to melt and overflow to the contact surface of the joint 48 and the pipe fitting 49. At the same time, rotate the paddle 18 to make the brazing heating and solder overflow more uniform, thereby improving the welding effect. After the solder overflow fills the connection between the joint 48 and the pipe fitting 49, stop rotating, close the welding device, and wait for the solder to cool to complete the welding.
[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.
Claims
1. An induction brazing auxiliary device for high voltage switch products, characterized in that: It includes a base, a guide seat is provided on the base, a joint clamping assembly is installed on the guide seat for guiding movement, the joint clamping assembly includes a joint clamp that can be used to clamp the joint, the base is also provided with a clamp seat, the clamp seat is provided with a pipe clamping assembly that can be used to clamp the pipe fitting, when the joint clamping assembly clamps the joint and the pipe clamping assembly clamps the pipe fitting, the joint clamped by the joint clamping assembly is coaxial with the pipe fitting clamped by the pipe clamping assembly, an elastic retaining structure is provided between the joint clamping assembly and the guide seat, the elastic retaining structure provides an elastic force for the joint clamping assembly to move in the direction of the pipe clamping assembly, and the joint clamping assembly is provided with a stopping structure to prevent the joint clamping assembly from disengaging from the guide seat in the guiding movement direction.
2. The induction brazing auxiliary device for high voltage switch products according to claim 1 is characterized in that: The guide seat is provided with a guide through hole, and the joint clamping assembly includes a clamp guide member capable of axially guiding and moving in the guide through hole, the clamp guide member is a cylindrical stepped member, and the outer side surface of the cylindrical stepped member is divided into a large diameter end, a middle diameter end, and a small diameter end, the joint clamp is fixedly connected to the end surface of the large diameter end close to the pipe clamping assembly, the diameter of the middle diameter end of the cylindrical stepped member is the same as the diameter of the guide through hole so as to guide and move in the axial direction of the guide through hole, and the stopping structure includes a limit member connected to the large diameter end of the cylindrical stepped member and the small diameter end of the cylindrical stepped member.
3. The induction brazing auxiliary device for high voltage switch products according to claim 2 is characterized in that: The elastic retaining structure includes a spring seat and an elastic member. The spring seat is a cylindrical member with one end open and the other end closed. The cylindrical member is fixedly connected to the guide seat through the open end and is coaxial with the guide through hole. The closed end of the cylindrical member is provided with an avoidance hole for the small diameter end of the cylindrical step member to pass through. The elastic member is installed in the annular space between the cylindrical member and the small diameter end of the clamp guide member and is pressed between the inner side surface of the closed end of the cylindrical member and the end surface of the middle diameter end of the cylindrical step member close to the small diameter end.
4. The induction brazing auxiliary device for high voltage switch products according to claim 1 is characterized in that: An air passage is provided in the joint clamping assembly, one end of the joint clamping assembly away from the joint fixture is sealed and connected to the inflation joint, the interior of the inflation joint is connected to the air passage of the joint clamping assembly, and the other end of the inflation joint is provided with an inflation port.
5. The induction brazing auxiliary device for high voltage switch products according to claim 2 is characterized in that: An axially extending air passage is provided in the cylindrical stepped part, which extends to the joint clamp and is connected with the inner cavity of the joint when in use. One end of the cylindrical stepped part away from the joint clamp is sealed and connected to the inflation joint, the interior of the inflation joint is connected with the air passage, and an inflation port is provided at the other end of the inflation joint.
6. The induction brazing auxiliary device for high voltage switch products according to claim 5 is characterized in that: The inflation joint constitutes the limiting member.
7. The induction brazing auxiliary device for high voltage switch products according to any one of claims 1 to 6, characterized in that: The joint clamp includes a clamp base and a hoop installed on the outside of the clamp base. The end of the clamp base facing the fixture seat is used for positioning with the joint stop. The hoop includes a plurality of circumferentially arranged elastic hoop arms that can undergo radial elastic deformation to radially tighten the joint.
8. The induction brazing auxiliary device for high voltage switch products according to any one of claims 1 to 6, characterized in that: A V-shaped groove is provided on the upper side of the clamp seat for centering the pipe fitting. The pipe fitting clamping assembly includes a quick clamp, which is located above the V-shaped groove and is used to press the pipe fitting into the V-shaped groove.
9. The induction brazing auxiliary device for high voltage switch products according to any one of claims 2 to 6, characterized in that: The cylindrical stepped member can be rotatably mounted on the guide seat around its own axis.
10. The induction brazing auxiliary device for high voltage switch products according to claim 9, characterized in that: The end surface of the large diameter end of the cylindrical stepped member away from the joint fixture is fixedly connected to a coaxial shielding plate.