Multi-hole-site copper pipe flange efficient induction brazing tool

Abstract

The utility model discloses a multi-hole-site efficient induction brazing tool for a copper pipe flange. The multi-hole-site efficient induction brazing tool comprises a base, a pair of rotary lifting assemblies arranged on the two sides of the base, clamping jaw assemblies arranged at the upper ends of the rotary lifting assemblies and a flange supporting platform arranged in the middle of the base. The clamping jaw assembly comprises a clamping jaw base fixed to the rotary lifting assembly and a plurality of clamping jaws fixed to the clamping jaw base. The device can be suitable for welding products of various similar structures, the flange supporting platform and the copper pipe clamping assembly both support rapid replacement, the used clamping jaw can guarantee accurate positioning of the copper pipes, one-time clamping and repeated welding of the multiple copper pipes and a base body flange can be achieved in cooperation with an opening and closing type heating coil carried by a mechanical arm, and the welding efficiency is improved. And the time for repeatedly clamping the copper pipe and the time for adjusting the posture of the copper pipe are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of flange welding, and in particular relates to a high-efficiency induction brazing tool for multi-hole copper pipe flanges. Background Art

[0002] In the air conditioning and refrigeration industries, processes involving the connection of numerous copper tubes to other components often utilize induction brazing. Due to the mature brazing process for copper parts and the relatively high plasticity of copper tubes, reliable connections can be achieved without the use of tooling, or with only simple tooling. When precise part positioning is required, welding conditions are complex, or automated welding is required, a tooling that is simple, efficient, and offers precise and reliable positioning is essential for improving welding quality and increasing production efficiency. Figure 1 The figure shows a schematic diagram of a multi-hole copper pipe flange. In the figure, 8 copper pipes need to be welded to the base flange, and the welding method is automatic induction brazing by a robot. It can be seen that the copper pipes are all bent pipes with different shapes. Without the use of tooling, it will be difficult to ensure the optimal fit of the area to be welded and the accuracy of the spatial position of the copper pipe. At the same time, due to the limitations of the part structure and weld distribution, it is impossible to use a single annular coil or open and close coil to achieve simultaneous welding of multiple welds. An open and close coil must be used to weld each copper pipe separately to ensure welding quality. Therefore, this product requires multiple welding in various welding postures, and the welding conditions are relatively complex. This requires the design of a special welding tool for this type of product to ensure the reliable positioning of the parts throughout the welding process. Summary of the Invention

[0003] In order to overcome the problem that the welding tooling in the prior art cannot use a single annular coil or an open and close coil to achieve simultaneous welding of multiple welds, and the welding conditions are relatively complex, the following technical solution is proposed:

[0004] A high-efficiency induction brazing tool for multi-hole copper pipe flanges, comprising: a base, a pair of rotating lifting assemblies arranged on both sides of the base, a clamping claw assembly arranged at the upper end of the rotating lifting assembly, and a flange support platform arranged in the middle of the base;

[0005] The clamping jaw assembly includes a clamping jaw base fixed to the rotating lifting assembly and a plurality of clamping jaws fixed to the clamping jaw base;

[0006] The rotary lifting assembly includes: a first L-shaped bracket symmetrically fixed to both sides of the base and two lifting rods arranged on the first L-shaped bracket; the lower ends of the lifting rods are fixed to the first L-shaped bracket through a rotating mechanism, and the upper ends are fixed to both sides of the clamping claw base through a second L-shaped bracket and a locking handle;

[0007] The base is also provided with a plurality of fixing clamps, and the flange support platform is fixed to the base through the fixing clamps.

[0008] Furthermore, the flange support platform includes: a support base fixed to the upper surface of the base by a fixing clamp, a pillar vertically fixed on the support base, and a flange platform fixed on the pillar; the flange platform is used to fix the flange to be welded.

[0009] Furthermore, a pair of flange positioning pins are provided on the upper surface of the flange platform, and the bottom surface of the horizontal end of the first L-shaped bracket is fixed to the upper surface of the base through a fixing member. The upper and lower surfaces of the rotating mechanism are respectively fixed to the upper surface of the first L-shaped bracket and the lower surface of the lifting rod through fixing members, and the rotating mechanism serves as the axis of rotation of the lifting rod.

[0010] Furthermore, a lifting hoop is provided on the vertical surfaces opposite to each other of the two first L-shaped brackets, the lifting rod is passed through the lifting hoop, and a semicircular limit block is also provided on the lifting hoop;

[0011] The lifting hoop is rectangular, and a circular hoop center hole is opened in the middle of the hoop corresponding to the lifting rod, and the lifting rod is inserted into the hoop center hole; a semicircular limiting hole is opened on one side of the semicircular limiting block corresponding to the outer edge of the lifting rod; the semicircular limiting block and the lifting hoop limit the lifting rod together.

[0012] Furthermore, a plurality of positioning pins are provided on the upper surface of the base, a horizontal spring is provided between the first L-shaped bracket and the lifting hoop, and a vertical spring is provided between the vertical section of the second L-shaped bracket and the lifting hoop;

[0013] A V-shaped limiting block is provided at the lower end of the vertical section of the second L-shaped bracket, and a V-shaped limiting groove is provided at the upper end of the first L-shaped bracket corresponding to the V-shaped limiting block.

[0014] Furthermore, the vertical section of the first L-shaped bracket is provided with a horizontal spring adjustment handle, and the horizontal spring adjustment handle can adjust the tightness of the horizontal spring; the vertical section of the second L-shaped bracket is provided with a vertical spring adjustment handle, and the vertical spring adjustment handle can adjust the tightness of the vertical spring.

[0015] Furthermore, a first gas pipeline is connected in the middle of the base, a second gas pipeline is arranged between the support base and the flange platform, and an air outlet is opened in the middle of the flange platform; the top end of the first gas pipeline is connected to the bottom end of the second gas pipeline, and the top end of the second gas pipeline is connected to the air outlet.

[0016] The utility model can be applied to the welding of various products with similar structures. The flange support platform and the copper tube clamping assembly both support quick replacement. The clamping jaws used can ensure the precise positioning of the copper tube. It is only necessary to adjust the position of the clamping jaws during the first use to make the copper tube and the flange achieve the best fit. No additional adjustment is required during mass production. Combined with the opening and closing heating coil carried by the manipulator, multiple copper tubes can be clamped and welded to the base flange at one time, saving the time of repeated clamping of the copper tubes and the time of a large number of copper tube posture adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model of a high-efficiency induction brazing tool for multi-hole copper pipe flanges.

[0018] Figure 2 This is an exploded view of the utility model's high-efficiency induction brazing tooling for multi-hole copper pipe flanges.

[0019] Figure 3 This is an overall schematic diagram of the utility model of the high-efficiency induction brazing tooling for multi-hole copper pipe flange rotated to a certain angle.

[0020] In the picture:

[0021] Base 1, rotating lifting assembly 2, clamping jaw assembly 3, flange support platform 4, flange to be welded 5;

[0022] Fixed clamp 11, positioning pin 12, first gas pipeline 13;

[0023] A first L-shaped bracket 21, a lifting rod 22, a rotating mechanism 23, a second L-shaped bracket 24, and a horizontal spring 25;

[0024] Vertical spring 26; lifting hoop 211, semicircular limit block 212, V-shaped limit block 241, V-shaped limit groove 213;

[0025] Horizontal spring adjustment handle 214, vertical spring adjustment handle 242;

[0026] Clamping jaw base 31, clamping jaw 32; locking handle 33;

[0027] Support base 41, support pillar 42, flange platform 43, flange positioning pin 431;

[0028] Second gas pipeline 421 and gas outlet 432 . DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention with reference to specific embodiments in conjunction with the accompanying drawings. It should be understood that the described embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0030] The utility model provides a high-efficiency induction brazing tool for multi-hole copper pipe flanges. Figure 1 As shown, it comprises: a base 1, a pair of rotating lifting assemblies 2 arranged on both sides of the base 1, a clamping claw assembly 3 arranged on the upper end of the rotating lifting assembly 2, and a flange support platform 4 arranged in the middle of the base 1;

[0031] Combine Figure 1 and Figure 2 The clamping jaw assembly 3 includes a clamping jaw base 31 fixed to the rotating lifting assembly 2 and a plurality of clamping jaws 32 fixed on the clamping jaw base 31;

[0032] The rotary lifting assembly 2 includes: a first L-shaped bracket 21 symmetrically fixed to both sides of the base 1 and two lifting rods 22 provided on the first L-shaped bracket 21; the lower ends of the lifting rods 22 are fixed to the first L-shaped bracket 21 via a rotating mechanism 23, and the upper ends are fixed to both sides of the clamping claw base 31 via second L-shaped brackets 24 and locking handles 33;

[0033] The base 1 is further provided with a plurality of fixing clamps 11 , and the flange support platform 4 is fixed to the base 1 via the fixing clamps 11 .

[0034] In some embodiments of the present invention, the flange support platform 4 includes: a support base 41 fixed to the upper surface of the base 1 by a fixing clamp 11, a pillar 42 vertically fixed on the support base 41, and a flange platform 43 fixed on the pillar 42; the flange platform 43 is used to fix the flange 5 to be welded.

[0035] In some embodiments of the present invention, a pair of flange positioning pins 431 are provided on the upper surface of the flange platform 43 , and the outer wall of the flange 5 to be welded is clamped between the flange positioning pins 431 , thereby achieving the positioning of the flange 5 to be welded.

[0036] In some embodiments of the present invention, the bottom surface of the horizontal end of the first L-shaped bracket 21 is fixed to the upper surface of the base 1 by a fixing member, such as a screw, and the upper and lower surfaces of the rotating mechanism 23 are respectively fixed to the upper surface of the first L-shaped bracket 21 and the lower surface of the lifting rod 23 by fixing members. The rotating mechanism 23 serves as the axis of rotation of the lifting rod 22.

[0037] In some embodiments of the present invention, a lifting hoop 211 is provided on the vertical surfaces opposite to each other of the two first L-shaped brackets 21, the lifting rod 22 is passed through the lifting hoop 211, and a semicircular limit block 212 is further provided on the lifting hoop 211;

[0038] The lifting hoop 211 is rectangular, and a circular hoop hole is opened in the middle of the hoop corresponding to the lifting rod 22, and the lifting rod 22 is inserted into the hoop hole; a semicircular limiting hole is opened on one side of the semicircular limiting block 212 corresponding to the outer edge of the lifting rod 22; the semicircular limiting block 212 and the lifting hoop 211 limit the lifting rod together.

[0039] In some embodiments of the present invention, a plurality of positioning pins 12 are provided on the upper surface of the base 1 , and the positioning pins 12 are used to accurately position the flange support platform 4 to ensure consistency of repeated clamping.

[0040] In some embodiments of the present invention, a horizontal spring 25 is provided between the first L-shaped bracket 21 and the lifting hoop 211 , and a vertical spring 26 is provided between the vertical section of the second L-shaped bracket 24 and the lifting hoop 211 ;

[0041] A V-shaped stopper 241 is provided at the lower end of the vertical section of the second L-shaped bracket 24, and a V-shaped stopper groove 213 is provided at the upper end of the first L-shaped bracket 21 corresponding to the V-shaped stopper 241. By snapping the V-shaped stopper 241 into the V-shaped stopper groove 213 and tightening it with the vertical spring 26, the rotary lifting assembly 2 is fixed in the horizontal and vertical directions.

[0042] In some embodiments of the present invention, the vertical section of the first L-shaped bracket 21 is provided with a horizontal spring adjustment handle 214, and the horizontal spring adjustment handle 214 can adjust the tightness of the horizontal spring 25, thereby realizing the rapid return of the rotary lifting assembly 2 in the reverse rotation; the vertical section of the second L-shaped bracket 24 is provided with a vertical spring adjustment handle 242, and the vertical spring adjustment handle 242 can adjust the tightness of the vertical spring 26, thereby realizing the rapid return of the rotary lifting assembly 2 in the reverse lifting.

[0043] In some embodiments of the present invention, a first gas pipeline 13 is connected to the middle of the base, a second gas pipeline 421 is arranged between the support base 41 and the flange platform 43, and a gas outlet 432 is opened in the middle of the flange platform 43; the top of the first gas pipeline 13 is connected to the bottom end of the second gas pipeline 421, and the top of the second gas pipeline 421 is connected to the gas outlet 432. The first gas pipeline 13 and the second gas pipeline 421 are used to introduce protective gas into the welded steel pipe to reduce spatter during welding and improve welding quality.

[0044] The principle of the present invention is as follows: first, the flange is placed on the flange platform 43 and the flange 5 to be welded is positioned in the correct position by means of the flange positioning pin 431 on the platform; then, the copper tubes to be welded are inserted into the correct holes in turn and the upper ends of the copper tubes are fixed with the clamping jaws 32; then, the clamping jaws 32 rotate automatically and cooperate with the manipulator to complete the welding of all the copper tubes in turn; finally, the clamping jaws 32 are separated from the steel tubes, and the rotary lifting assembly is raised and rotated to the position as shown in FIG. Figure 3 The non-vertical angle shown facilitates the removal of the flange with copper pipe after welding.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A high-efficiency induction brazing tool for porous copper pipe flanges, characterized in that: include: A base, a pair of rotating lifting assemblies arranged on both sides of the base, a clamping claw assembly arranged on the upper ends of the rotating lifting assemblies, and a flange support platform arranged in the middle of the base; The clamping jaw assembly includes a clamping jaw base fixed to the rotating lifting assembly and a plurality of clamping jaws fixed to the clamping jaw base; The rotary lifting assembly includes: a first L-shaped bracket symmetrically fixed to both sides of the base and two lifting rods arranged on the first L-shaped bracket; the lower ends of the lifting rods are fixed to the first L-shaped bracket through a rotating mechanism, and the upper ends are fixed to both sides of the clamping claw base through a second L-shaped bracket and a locking handle; The base is also provided with a plurality of fixing clamps, and the flange support platform is fixed to the base through the fixing clamps.

2. The high-efficiency induction brazing tool for porous copper pipe flanges according to claim 1 is characterized in that: The flange support platform includes: a support base fixed to the upper surface of the base by a fixing clamp, a pillar vertically fixed on the support base, and a flange platform fixed on the pillar; the flange platform is used to fix the flange to be welded.

3. The high-efficiency induction brazing tool for porous copper pipe flanges according to claim 2 is characterized in that: A pair of flange positioning pins are provided on the upper surface of the flange platform. The bottom surface of the horizontal end of the first L-shaped bracket is fixed to the upper surface of the base through a fixing piece. The upper and lower surfaces of the rotating mechanism are respectively fixed to the upper surface of the first L-shaped bracket and the lower surface of the lifting rod through fixing pieces. The rotating mechanism serves as the axis of rotation of the lifting rod.

4. The high-efficiency induction brazing tool for porous copper pipe flanges according to claim 1 is characterized in that: A lifting hoop is provided on the vertical surfaces opposite to each other of the two first L-shaped brackets, the lifting rod is passed through the lifting hoop, and a semicircular limit block is also provided on the lifting hoop; The lifting hoop is rectangular, and a circular hoop center hole is opened in the middle of the hoop corresponding to the lifting rod, and the lifting rod is inserted into the hoop center hole; a semicircular limiting hole is opened on one side of the semicircular limiting block corresponding to the outer edge of the lifting rod; the semicircular limiting block and the lifting hoop limit the lifting rod together.

5. The high-efficiency induction brazing tool for porous copper pipe flanges according to claim 4 is characterized in that: A plurality of positioning pins are provided on the upper surface of the base, a horizontal spring is provided between the first L-shaped bracket and the lifting hoop, and a vertical spring is provided between the vertical section of the second L-shaped bracket and the lifting hoop; A V-shaped limiting block is provided at the lower end of the vertical section of the second L-shaped bracket, and a V-shaped limiting groove is provided at the upper end of the first L-shaped bracket corresponding to the V-shaped limiting block.

6. The high-efficiency induction brazing tool for porous copper pipe flanges according to claim 5 is characterized in that: The vertical section of the first L-shaped bracket is provided with a horizontal spring adjustment handle, and the horizontal spring adjustment handle can adjust the tightness of the horizontal spring; the vertical section of the second L-shaped bracket is provided with a vertical spring adjustment handle, and the vertical spring adjustment handle can adjust the tightness of the vertical spring.

7. The high-efficiency induction brazing tool for porous copper pipe flanges according to claim 2 is characterized in that: A first gas pipeline is connected to the middle of the base, a second gas pipeline is arranged between the support base and the flange platform, and a gas outlet is opened in the middle of the flange platform; the top end of the first gas pipeline is connected to the bottom end of the second gas pipeline, and the top end of the second gas pipeline is connected to the gas outlet.

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