A fin support leg fully automatic welding device and welding method

Abstract

The present invention relates to the technical field of semiconductor component production, and specifically to a fully automatic welding device and welding method for fin legs, wherein the fully automatic welding device for fin legs comprises a frame, on which a bearing assembly, a visual positioning detection assembly, a feeding assembly and a welding gun are arranged; and further comprises a control end, which is electrically connected to the bearing assembly, the visual positioning detection assembly, the feeding assembly and the welding gun. In view of the technical problem of low efficiency of existing fin leg welding, the present invention can accurately adjust the relative position of the quartz fin and the leg through the combined use of the visual positioning detection assembly, the feeding assembly and the bearing assembly, and automatically realize the welding between the quartz fin and the leg through the welding gun.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor component production, and in particular to a fully automatic welding device and a welding method for fin legs. Background Art

[0002] In the production process of semiconductor quartz boat parts, due to the diversification of wafer bearing structures, the technical requirements for quartz boat fin production personnel are getting higher and higher, requiring high-precision, miniaturization and high repeatability operations. The existing quartz boat fin legs are all manually welded, completed by a certain auxiliary jig block, requiring operators to have extremely high manual technical skills and experience to ensure high flatness, position, and integrity and consistency of the welded parts. Due to the above factors, the production efficiency and pass rate of this product are low, and the quality stability is poor, which cannot meet customer needs. Summary of the invention

[0003] In view of the technical problem of low efficiency in the existing fin support welding, the present invention provides a fully automatic welding device and method for fin supports, which can accurately adjust the relative position of quartz fins and supports through the combined use of a visual positioning detection component, a feeding component and a bearing component, and automatically realize the welding between the quartz fins and the supports through a welding gun.

[0004] The technical solution provided by the present invention is: a fully automatic welding device for fin legs, comprising a frame, on which a bearing assembly, a visual positioning detection assembly, a feeding assembly and a welding gun are arranged; it also comprises a control end, and the control end is electrically connected to the bearing assembly, the visual positioning detection assembly, the feeding assembly and the welding gun; the bearing assembly comprises a rotating power unit, a rotating shaft, a rotating bearing platform, a lifting power unit, a lifting bearing platform and a bearing bracket arranged on the frame; the output end of the rotating power unit is transmission-connected with the rotating shaft, and the rotating bearing platform is fixed to one end of the rotating shaft; the rotating bearing platform is circumferentially provided with a plurality of first supporting members, and the first supporting members are used to support the fins; the output end of the lifting power unit is transmission-connected with the lifting bearing platform, and the lifting bearing platform is fixedly connected to the bearing bracket, one end of the rotating shaft passes through the lifting bearing platform and the bearing bracket, and the rotating bearing platform is located on the upper side of the bearing bracket; the bearing bracket is circumferentially provided with a plurality of second supporting members, and the second supporting members are used to support the fins ; The feeding assembly is arranged adjacent to the bearing assembly, and the feeding assembly is used to move the support leg closer to or away from the fin on the bearing assembly; the feeding assembly includes a horizontal moving part, a vertical moving part, a first bracket, a second bracket, a clamping power part and a clamping finger; the horizontal moving part, the vertical moving part and the clamping power part are all electrically connected to the control end; the first bracket is fixedly connected to the output end of the horizontal moving part, the vertical moving part is fixed on the first bracket, the second bracket is fixedly connected to the output end of the vertical moving part, the clamping power part is fixed on the second bracket, the clamping finger is transmission-connected to the output end of the clamping power part, and the clamping finger is used to clamp the support leg; the welding gun is arranged adjacent to the bearing assembly, and the gun head of the welding gun faces the fin on the bearing assembly; the visual positioning detection assembly is used to detect and record the welding position of the support leg on the fin, and the visual positioning detection assembly includes a CCD camera, the CCD camera is electrically connected to the control end, and the CCD camera is located on the upper side of the rotating bearing platform and faces the fin.

[0005] Optionally, the horizontal moving part is a first cylinder arranged horizontally, and the first bracket is fixedly connected to the output end of the first cylinder; the vertical moving part is a second cylinder arranged longitudinally along the height direction, and the second bracket is fixedly connected to the output end of the second cylinder; the clamping power part is a clamping cylinder, and the clamping finger is fixedly connected to the clamping claw of the clamping cylinder.

[0006] Optionally, the clamping fingers are made of isostatically pressed high-purity graphite.

[0007] Optionally, the visual positioning detection component also includes a longitudinal support rod, a movable bracket and a locking piece, the longitudinal support rod is fixedly connected to the frame and extends in a direction perpendicular to the bottom surface, the movable bracket is movably cooperated with the longitudinal support rod, the locking piece is used for relative fixation of the longitudinal support rod and the movable bracket, and the CCD camera is fixed on the movable bracket.

[0008] Optionally, a first contact end is provided on the first support member, and the first contact end is used to abut against the fin; a second contact end is provided on the second support member, and the second contact end is used to abut against the fin; the first contact end and the second contact end are both made of isostatically pressed high-purity graphite material.

[0009] Optionally, the rotating power unit is a motor, the motor is electrically connected to the control end, and the output end of the motor is directly or indirectly connected to the rotating shaft; the lifting power unit includes a driving unit and a lifting shaft, the driving unit is electrically connected to the control end, the driving unit is power-connected to the lifting shaft, and one end of the lifting shaft is fixedly connected to the lifting support platform.

[0010] Optionally, the lifting shaft is located on one side of the rotating shaft, a limiting shaft is provided on the other side of the rotating shaft, the limiting shaft is fixedly connected to the lifting bearing platform, a limiting hole is provided on the frame, and the limiting hole is movably matched with the limiting shaft.

[0011] Optionally, the welding gun is an oxyhydrogen flame gun.

[0012] A welding method, using the above-mentioned fully automatic welding device for fin legs, includes: placing the fin on a supporting bracket, the control end controls the clamping power unit to release the clamping fingers, and clamps the clamping fingers after loading the supporting legs, the control end continues to control the horizontal moving unit to drive the supporting legs to move in the direction of the fins, and at the same time the control end controls the lifting power unit to lower the lifting platform until the fins are supported by the first support member, then the control end controls the rotating power unit to start, and drives the rotating platform to rotate through the rotating shaft until the welding notch of the fin passes under the CCD camera, when the CCD camera detects the welding position of the supporting legs on the fins, the welding position coordinates are recorded and sent to the control end, the control end controls the rotating power unit according to the coordinates, so that the rotating platform rotates until the welding position is rotated to the lower side of the supporting legs fixed by the feeding assembly and then stops, and the control end controls the lifting power unit to lower the lifting platform. The lowering power unit drives the lifting platform to rise, and the second support member holds up the annular fins. At the same time, the control end controls the vertical moving unit to drive the legs to descend, so that there is a hot work space between the fins and the legs. The control end controls the welding gun to start, and the welding gun flame is sprayed in the hot work space to heat the fins and the legs synchronously for a period of time. Then, the control end controls the vertical moving unit to drive the legs to descend until the welding position of the legs and the fins is in contact and the welding is completed. The control end controls the welding gun to close. After cooling for a period of time, the control end controls the clamping power unit to release the legs. After the control end continues to control the horizontal moving unit and the vertical moving unit to move away from the fins, the control end controls the clamping power unit to release the clamping fingers and reload the legs. The above process is repeated several times until the welding operation of all the legs and the annular fins is completed; wherein, the hot work space is the distance between the legs and the fins, and the distance is 3 to 5 mm.

[0013] Optionally, the time for the welding gun flame to spray in the hot space to heat the fins and the legs synchronously is controlled to be 5 to 10 seconds; and the cooling time after the legs and fins are welded is controlled to be more than 1 minute.

[0014] Beneficial Effects

[0015] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: in order to solve the technical problem of low efficiency in welding the existing fin legs, the present invention can accurately adjust the relative position of the quartz fins and the legs through the combined use of a visual positioning detection component, a feeding component and a bearing component, and automatically realize the welding between the quartz fins and the legs through a welding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a fully automatic welding device for fin legs according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the operation of the fully automatic welding device for fin legs proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the invention are shown in the accompanying drawings. The words "first", "second", etc. described in the present invention are set for the convenience of describing the technical solution of the present invention, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present invention. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts, all of which are within the scope of protection required by the present invention.

[0020] Example 1

[0021] Combined with Figure 1-2 This embodiment proposes a fully automatic welding device for fin legs, including a frame 10, on which a bearing assembly, a visual positioning detection assembly, a feeding assembly and a welding gun 11 are provided; it also includes a control end, which is electrically connected to the bearing assembly, the visual positioning detection assembly, the feeding assembly and the welding gun 11.

[0022] The bearing assembly includes a rotating power unit, a rotating shaft 12, a rotating bearing platform 13, a lifting power unit 14, a lifting bearing platform 15 and a bearing bracket 16 arranged on the frame 10; the output end of the rotating power unit is transmission-connected to the rotating shaft 12, and the rotating bearing platform 13 is fixed to one end of the rotating shaft 12; the rotating bearing platform 13 is circumferentially provided with a plurality of first support members 101, and the first support members 101 are used to support the fins; the output end of the lifting power unit 14 is transmission-connected to the lifting bearing platform 15, and the lifting bearing platform 15 is fixedly connected to the bearing bracket 16, one end of the rotating shaft 12 passes through the lifting bearing platform 15 and the bearing bracket 16, and the rotating bearing platform 13 is located on the upper side of the bearing bracket 16; the bearing bracket 16 is circumferentially provided with a plurality of second support members 102, and the second support members 102 are used to support the fins.

[0023] The feeding assembly is arranged adjacent to the bearing assembly, and the feeding assembly is used to move the supporting foot closer to or away from the fins on the bearing assembly; the feeding assembly includes a horizontal moving part 20, a vertical moving part 23, a first bracket 21, a second bracket 22, a clamping power part 24 and a clamping finger 25; the horizontal moving part 20, the vertical moving part 23 and the clamping power part 24 are all electrically connected to the control end; the first bracket 21 is fixedly connected to the output end of the horizontal moving part 20, the vertical moving part 23 is fixed on the first bracket 21, the second bracket 22 is fixedly connected to the output end of the vertical moving part 23, the clamping power part 24 is fixed on the second bracket 22, the clamping finger 25 is transmission-connected to the output end of the clamping power part 24, and the clamping finger 25 is used to clamp the supporting foot.

[0024] The welding gun 11 is arranged adjacent to the supporting assembly, and the gun head of the welding gun 11 is facing the fins on the supporting assembly; the visual positioning detection assembly is used to detect and record the welding position of the support legs on the fins, and the visual positioning detection assembly includes a CCD camera 103, which is electrically connected to the control end, and the CCD camera 103 is located on the upper side of the rotating supporting platform 13 and facing the fins.

[0025] A fully automatic fin support welding device of the present embodiment can accurately adjust the relative position of the quartz fin and the support through the combined use of a visual positioning detection component, a feeding component and a bearing component, and automatically realize the welding between the quartz fin and the support through a welding gun 11.

[0026] The fully automatic welding device for fin legs of the present embodiment works as follows: the fin is placed on the supporting bracket 16, the control end controls the clamping power unit 24 to release the clamping fingers 25, and clamps the clamping fingers 25 after the supporting legs are loaded, the control end continues to control the horizontal moving unit 20 to drive the supporting legs to move in the direction of the fins, and at the same time the control end controls the lifting power unit 14 to lower the lifting platform 15 until the fins are supported by the first support member 101, then the control end controls the rotating power unit to start, and drives the rotating platform 13 to rotate through the rotating shaft 12 until the welding notch of the fin passes under the CCD camera 103, when the CCD camera 103 detects the welding position of the supporting legs on the fins, the coordinates of the welding position are recorded and sent to the control end, and the control end controls the rotating power unit according to the coordinates to rotate the rotating platform 13 until the welding position is rotated to the supporting legs fixed by the feed assembly. After the lower side of the foot stops, the control end controls the lifting power unit 14 to drive the lifting platform 15 to rise, and the second support member 102 holds up the annular fin. At the same time, the control end controls the vertical moving unit 23 to drive the support foot to descend, so that there is a hot space between the fin and the support foot. The control end controls the welding gun 11 to start. The welding gun 11 sprays the flame in the hot space to heat the fin and the support foot synchronously for a period of time. The control end controls the vertical moving unit 23 to drive the support foot to descend until the support foot and the fin are in contact at the welding position and the welding is completed. The control end controls the welding gun 11 to close. After cooling for a period of time, the control end controls the clamping power unit 24 to release the support foot. The control end continues to control the horizontal moving unit 20 and the vertical moving unit 23 to move away from the fin, and then controls the clamping power unit 24 to release the clamping finger 25 and reload the support foot. Repeat the above process several times until the welding operation of all the support feet and the annular fins is completed. In the above welding process, the welding temperature is at least above 1700℃. The control end in this embodiment is a controller, a control terminal or a control module with a control function, such as a single-chip microcomputer module, a PLC module or other industrial control host.

[0027] In this embodiment, the feeding assembly is a mechanism that can drive the support leg to achieve translation and lifting movement, wherein the horizontal moving part 20 is a driving mechanism for realizing horizontal movement of the support leg, the vertical moving part 23 is a driving mechanism for realizing height movement of the support leg, and the clamping power part 24 is a driving mechanism for realizing the clamping and opening of the clamping fingers 25. Both the horizontal moving part 20 and the vertical moving part 23 can be mechanisms such as electric push rods, cylinders, hydraulic cylinders, and screws, and the clamping power part 24 is a clamping claw mechanism, and the clamping fingers 25 are fixed on the clamping claws, thereby realizing the clamping of the support leg.

[0028] In a further embodiment, the horizontal moving part 20 is a first cylinder arranged horizontally, and the first bracket 21 is fixedly connected to the output end of the first cylinder; the vertical moving part 23 is a second cylinder arranged longitudinally along the height direction, and the second bracket 22 is fixedly connected to the output end of the second cylinder; the clamping power part 24 is a clamping cylinder, and the clamping finger 25 is fixedly connected to the clamping claw of the clamping cylinder. Among them, the clamping cylinder is a clamping claw cylinder, or a cylinder clamping claw, and the clamping fingers 25 are respectively fixed on the clamping claws of the clamping cylinder, so as to follow the opening and closing of the clamping claws to achieve the clamping of the support leg.

[0029] In a further embodiment, the clamping fingers 25 are made of isostatically pressed high-purity graphite. In this embodiment, since the purity of the isostatically pressed high-purity graphite material used by the clamping fingers 25 can reach below 5ppm, it can be fully ensured that the quartz boat fins will not be scratched by the clamping fingers 25 to cause defects, and the clamping fingers 25 can be replaced to prevent excessive wear and tear during use from affecting the positioning accuracy.

[0030] In this embodiment, the welding gun 11 is preferably an oxyhydrogen flame gun, which is suitable for welding the quartz boat fins and legs. The rotating power unit is preferably a motor, and the output end of the motor is directly connected to the rotating shaft 12, or indirectly connected to the rotating shaft 12 through a gear set or a reduction mechanism.

[0031] Furthermore, the lifting power unit 14 is preferably a mechanism including a motor, a hydraulic cylinder, a gas cylinder, an electric push rod or a screw, etc., and the output end of the lifting power unit 14 is directly connected to the lifting platform 15, or can be indirectly connected to the lifting platform 15 through a connecting rod mechanism, a slide rail assembly, etc. In a more preferred embodiment, the lifting power unit 14 includes a driving unit and a lifting shaft, the driving unit is connected to the lifting shaft power, and one end of the lifting shaft is fixedly connected to the lifting platform 15, wherein the driving unit can be a hydraulic cylinder, a gas cylinder, an electric push rod or a screw, etc., and the output end of the driving unit drives the lifting platform 15 to move through the lifting shaft.

[0032] When the lifting power unit 14 includes a driving unit and a lifting shaft, since one end of the rotating shaft 12 passes through the lifting load platform 15 and the load bracket 16, that is, the lifting load platform 15 and the load bracket 16 are sleeved on the outside of the rotating shaft 12, the lifting shaft is located on one side of the rotating shaft 12. In a further embodiment, a limiting shaft 26 is provided on the other side of the rotating shaft 12, and the limiting shaft 26 is fixedly connected to the lifting load platform 15. A limiting hole is provided on the frame 10, and the limiting hole is movably matched with the limiting shaft 26. Therefore, the setting of the limiting shaft 26 can prevent the lifting load platform 15 and the load bracket 16 from being offset during the lifting process, thereby making the movement of the lifting load platform 15 and the load bracket 16 more stable, thereby ensuring the welding accuracy of the fins and the support legs.

[0033] In this embodiment, the visual positioning detection component is used to detect and record the welding position of the support legs on the fins. The visual positioning detection component includes a CCD camera 103, which is electrically connected to the control end. The CCD camera 103 is located on the upper side of the rotating support platform 13 and faces the fins.

[0034] In a further embodiment, the visual positioning detection assembly further includes a longitudinal support rod 17, a movable bracket 18 and a locking member 19, wherein the longitudinal support rod 17 is fixedly connected to the frame 10 and extends in a direction perpendicular to the bottom surface, the movable bracket 18 is movably matched with the longitudinal support rod 17, the locking member 19 is used for relative fixation of the longitudinal support rod 17 and the movable bracket 18, and the CCD camera 103 is fixed on the movable bracket 18. Thus, in this embodiment, the movable bracket 18 can be moved relative to the longitudinal support rod 17, and the locking member 19 such as a screw or a latch can be used to keep the movable bracket 18 fixed to the longitudinal support rod 17 after the height of the movable bracket 18 is adjusted, thereby adjusting the height of the CCD camera 103 and adjusting the relative distance between the CCD camera 103 and the fin, thereby more accurately detecting the welding position.

[0035] In combination with the above working method, the rotating bearing platform 13 supports the fins through the first supporting member 101, and the supporting bracket 16 supports the fins through the second supporting member 102. In a further embodiment, the first supporting member 101 is provided with a first contact end 111, and the first contact end 111 is used to abut against the fin; the second supporting member 102 is provided with a second contact end 112, and the second contact end 112 is used to abut against the fin; the first contact end 111 and the second contact end 112 are both made of isostatically pressed high-purity graphite. This embodiment further provides a first contact end 111 on the first support member 101, and a second contact end 112 on the second support member 102, so as to support the quartz boat fins through the first contact end 111 and the second contact end 112. The first contact end 111 and the second contact end 112 are both made of isostatically pressed high-purity graphite with a purity of less than 5 ppm, which can fully ensure that the quartz boat fins will not be scratched and cause defects, and the first contact end 111 and the second contact end 112 can be replaced to prevent the positioning accuracy from being affected by gradual consumption and wear during use.

[0036] Example 2

[0037] Combined with Figure 1-2, this embodiment proposes a welding method, using the fin support leg fully automatic welding device recorded in the technical solution of Example 1, including: placing the fin on the supporting bracket 16, the control end controls the clamping power unit 24 to release the clamping finger 25, and clamps the clamping finger 25 after the supporting leg is loaded, the control end continues to control the horizontal moving unit 20 to drive the supporting leg to move in the direction of the fin, and at the same time the control end controls the lifting power unit 14 to lower the lifting platform 15 until the fin is supported by the first support member 101, and then the control end controls the rotating power unit to start, and drives the rotating platform 13 to rotate through the rotating shaft 12 until the welding notch of the fin passes under the CCD camera 103, when the CCD camera 103 detects the welding position of the supporting leg on the fin, the welding position coordinates are recorded and sent to the control end, and the control end controls the rotating power unit according to the coordinates to rotate the rotating platform 13 until the welding position is rotated to the lower side of the supporting leg fixed by the feeding assembly Stop, the control end controls the lifting power unit 14 to drive the lifting bearing platform 15 to rise, the second support member 102 holds up the annular fin, and at the same time the control end controls the vertical moving unit 23 to drive the support leg to descend, so that there is a hot work space between the fin and the support leg, the control end controls the welding gun 11 to start, and the welding gun 11 sprays the flame in the hot work space to heat the fin and the support leg synchronously for a period of time, and then the control end controls the vertical moving unit 23 to drive the support leg to descend until the welding position of the support leg and the fin is in contact and the welding is completed, the control end controls the welding gun 11 to turn off, and after cooling for a period of time, the control end controls the clamping power unit 24 to release the support leg, and the control end continues to control the horizontal moving unit 20 and the vertical moving unit 23 to move away from the fin, and then controls the clamping power unit 24 to release the clamping fingers 25, and reloads the support leg, and repeats the above process several times until the welding operation of all the support legs and the annular fins is completed; wherein, the hot work space is the distance between the support leg and the fin, and the distance is 3 to 5 mm.

[0038] In this embodiment, the hot work space is controlled within the range of 3 to 5 mm, which is the most suitable distance for rapid bonding of quartz glass after being heated by a high-purity hydrogen-oxygen flame. Quartz glass has extremely strong resistance to thermal shock, and the bonding action should be performed immediately after the heat source disappears.

[0039] In a further embodiment, the time for the welding gun 11 to spray the flame in the hot space to heat the fins and the legs synchronously is controlled to be 5 to 10 seconds; the cooling time after the legs and fins are welded is controlled to be more than 1 minute. The reason why the time for the fins and legs to be heated synchronously is controlled to be 5 to 10 seconds is that the heating time of the two should not be too long, because the legs are small in size and are easily deformed if heated for too long. The cooling time should be more than 1 minute to ensure that the legs and fins are completely firm.

[0040] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A fully automatic welding device for fin legs, characterized in that: The machine comprises a frame on which a bearing assembly, a visual positioning detection assembly, a feeding assembly and a welding gun are arranged; and a control end is further comprised, wherein the control end is electrically connected to the bearing assembly, the visual positioning detection assembly, the feeding assembly and the welding gun; The bearing assembly includes a rotating power unit, a rotating shaft, a rotating bearing platform, a lifting power unit, a lifting bearing platform and a bearing bracket arranged on the frame; the output end of the rotating power unit is transmission-connected with the rotating shaft, and the rotating bearing platform is fixed to one end of the rotating shaft; the rotating bearing platform is circumferentially provided with a plurality of first support members, and the first support members are used to support the fins; the output end of the lifting power unit is transmission-connected with the lifting bearing platform, and the lifting bearing platform is fixedly connected with the bearing bracket, one end of the rotating shaft passes through the lifting bearing platform and the bearing bracket, and the rotating bearing platform is located on the upper side of the bearing bracket; the bearing bracket is circumferentially provided with a plurality of second support members, and the second support members are used to support the fins; The feeding assembly is arranged adjacent to the bearing assembly, and the feeding assembly is used to move the supporting foot closer to or away from the fin on the bearing assembly; the feeding assembly includes a horizontal moving part, a vertical moving part, a first bracket, a second bracket, a clamping power part and a clamping finger; the horizontal moving part, the vertical moving part and the clamping power part are all electrically connected to the control end; the first bracket is fixedly connected to the output end of the horizontal moving part, the vertical moving part is fixed on the first bracket, the second bracket is fixedly connected to the output end of the vertical moving part, the clamping power part is fixed on the second bracket, the clamping finger is transmission-connected to the output end of the clamping power part, and the clamping finger is used to clamp the supporting foot; The welding gun is arranged adjacent to the supporting assembly, and the gun head of the welding gun is facing the fins on the supporting assembly; the visual positioning detection assembly is used to detect and record the welding position of the support legs on the fins, and the visual positioning detection assembly includes a CCD camera, which is electrically connected to the control end, and the CCD camera is located on the upper side of the rotating supporting platform and facing the fins.

2. The fully automatic welding device for fin legs according to claim 1 is characterized in that: The horizontal moving part is a first cylinder arranged horizontally, and the first bracket is fixedly connected to the output end of the first cylinder; the vertical moving part is a second cylinder arranged longitudinally along the height direction, and the second bracket is fixedly connected to the output end of the second cylinder; the clamping power part is a clamping cylinder, and the clamping finger is fixedly connected to the clamping claw of the clamping cylinder.

3. A fin support leg fully automatic welding device according to any one of claims 1 or 2, characterized in that: The clamping fingers are made of isostatically pressed high-purity graphite.

4. The fully automatic welding device for fin legs according to claim 1 is characterized in that: The visual positioning detection component also includes a longitudinal support rod, a movable bracket and a locking piece. The longitudinal support rod is fixedly connected to the frame and extends in a direction perpendicular to the bottom surface. The movable bracket is movably cooperated with the longitudinal support rod. The locking piece is used for relative fixation of the longitudinal support rod and the movable bracket. The CCD camera is fixed on the movable bracket.

5. The fully automatic welding device for fin legs according to claim 1 is characterized in that: The first support member is provided with a first contact end, and the first contact end is used to abut against the fin; the second support member is provided with a second contact end, and the second contact end is used to abut against the fin; the first contact end and the second contact end are both made of isostatic high-purity graphite material.

6. The fully automatic welding device for fin legs according to claim 1 is characterized in that: The rotating power unit is a motor, which is electrically connected to the control end, and the output end of the motor is directly or indirectly connected to the rotating shaft; the lifting power unit includes a driving unit and a lifting shaft, the driving unit is electrically connected to the control end, the driving unit is dynamically connected to the lifting shaft, and one end of the lifting shaft is fixedly connected to the lifting support platform.

7. The fully automatic welding device for fin legs according to claim 6 is characterized in that: The lifting shaft is located on one side of the rotating shaft, and a limiting shaft is arranged on the other side of the rotating shaft. The limiting shaft is fixedly connected to the lifting bearing platform, and a limiting hole is arranged on the frame, and the limiting hole is movably matched with the limiting shaft.

8. A fin support leg fully automatic welding device according to any one of claims 1 to 7, characterized in that: The welding gun is an oxyhydrogen flame gun.

9. A welding method, characterized in that: A fully automatic welding device for fin legs as described in any one of claims 1 to 8 comprises: placing the fin on a supporting bracket, the control end controls the clamping power unit to release the clamping fingers, and clamps the clamping fingers after loading the legs, the control end continues to control the horizontal moving unit to drive the legs to move in the direction of the fins, and at the same time the control end controls the lifting power unit to lower the lifting platform until the fins are supported by the first support member, then the control end controls the rotating power unit to start, and drives the rotating platform to rotate through the rotating shaft until the welding notch of the fin passes under the CCD camera, when the CCD camera detects the welding position of the legs on the fins, the coordinates of the welding position are recorded and sent to the control end, the control end controls the rotating power unit according to the coordinates, so that the rotating platform rotates until the welding position is rotated to the lower side of the legs fixed by the feed assembly and then stops, and the control end controls The lifting power unit drives the lifting platform to rise, and the second support member holds up the annular fins. At the same time, the control end controls the vertical moving unit to drive the supporting legs to descend, so that there is a hot work space between the fins and the supporting legs. The control end controls the welding gun to start, and the welding gun flame is sprayed in the hot work space to heat the fins and the supporting legs synchronously for a period of time. Then, the control end controls the vertical moving unit to drive the supporting legs to descend until the welding position of the supporting legs and the fins is in contact and the welding is completed. The control end controls the welding gun to close. After cooling for a period of time, the control end controls the clamping power unit to release the supporting legs. After the control end continues to control the horizontal moving unit and the vertical moving unit to move away from the fins, the control end controls the clamping power unit to release the clamping fingers and reload the supporting legs. The above process is repeated several times until the welding operation of all the supporting legs and the annular fins is completed; wherein, the hot work space is the distance between the supporting legs and the fins, and the distance is 3 to 5 mm.

10. A welding method according to claim 9, characterized in that: The time for the welding gun flame to spray in the hot space to heat the fins and legs synchronously is controlled to be 5 to 10 seconds; the cooling time after the legs and fins are welded is controlled to be more than 1 minute.

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