Robot-linked welding processing equipment for hopper and its manufacturing process

Abstract

The present invention discloses a robot-linked welding processing equipment for a hopper and a manufacturing process thereof, and belongs to the field of hopper welding technology. A robot-linked welding processing equipment for a hopper and a manufacturing process thereof, comprising an industrial robot, a welding rotary tool and a metal hopper, wherein the industrial robot comprises a displacement base, a main link arm and an auxiliary link arm, the main link arm and the auxiliary link arm are connected by a movable joint, and a welding gun assembly is provided at one end of the auxiliary link arm. In order to solve the problem that due to the poor welding working environment, manual operation will cause unstable welding quality, and the operation requirements for the staff are high, and at the same time, it will also cause safety hazards, the hopper welding tool is used to realize one-time precise positioning and clamping of the hopper, integrated operation, rapid positioning, improved work efficiency, and accurate positioning, and can rotate 360 degrees to meet the internal and external welding of different positions and angles, while improving welding quality and welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of hopper welding, in particular to robot-linked welding processing equipment for hoppers and a manufacturing process thereof. Background Art

[0002] At present, most of the operations in factories are manual, and welding can only be completed through multiple clamping and positioning and multiple flipping at different angles. The efficiency is low and the reliability is poor. However, as enterprises have higher and higher requirements for the quality of welding products, traditional manual welding can no longer fully meet the needs of current enterprise development. On the other hand, due to the poor welding working environment, manual operation will cause unstable welding quality and have high operating requirements for workers. At the same time, it will also cause safety hazards. Therefore, in order to meet the existing needs, a robot linkage welding processing equipment for hoppers and its manufacturing process are proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a robot-linked welding processing equipment for a hopper and its manufacturing process. Through the hopper welding tooling, the hopper can be accurately positioned and clamped at one time, with integrated operation and rapid positioning, which improves work efficiency. The positioning is accurate and can be rotated 360 degrees to meet the needs of internal and external welding at different positions and angles, while improving welding quality and efficiency, and can solve the problems in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: A robot-linked welding processing device for a hopper, comprising an industrial robot, a welding rotary tool, and a metal hopper, wherein the industrial robot comprises a displacement base, a main link arm, and an auxiliary link arm, wherein the main link arm and the auxiliary link arm are connected via a movable joint, a welding gun assembly is provided at one end of the auxiliary link arm, the welding gun assembly and the auxiliary link arm are connected via screws, a welding line pipe hoop is provided on one side of the welding gun assembly, and the welding line pipe hoop is connected to the auxiliary link arm via screws;

[0005] The welding rotary tooling includes a tooling cabinet, a tooling fixture and a lifting base. The tooling cabinet and the lifting base are slidably connected via a slide rail. The metal hopper is arranged on the inner side of the tooling fixture. A rotating shaft disk is arranged between the tooling fixture and the tooling cabinet.

[0006] Preferably, the fixture includes side clamps and supporting clamps, the side clamps are located on the left and right sides of the metal hopper, and the supporting clamps are located on the upper and lower sides of the metal hopper, and movable wing plates are provided on the inner sides of both ends of the side clamps.

[0007] Preferably, the movable wing plate is rotatably connected to the side splint, an expansion truss is provided above the supporting splint, and a smoke frame is provided below the supporting splint. The smoke frame, the expansion truss and the supporting splint are all connected by screws, and an exhaust fan is provided on the outer surface of the smoke frame.

[0008] Preferably, a damping push wheel is provided at the connection between the side splint and the supporting splint, the damping push wheel is rotatably connected to the supporting splint, the damping push wheel is fit-fitted to the side splint, and locking nut assemblies are provided on the inner side of the movable wing plate and the flue frame.

[0009] Preferably, the rotating shaft disk is connected to the supporting splint through an adapter bracket, an outer bearing ring is provided on the inner side of the rotating shaft disk, an alignment shaft rod is provided on the outer surface of the outer bearing ring, an inner bearing ring is provided on the other end of the alignment shaft rod, and the inner bearing ring is telescopically connected to the alignment shaft rod.

[0010] Preferably, a drive shaft is provided on the inner side of the outer bearing ring, and the rotating shaft disk is rotatably connected to the tooling cabinet through the drive shaft. A positioning ring is provided at one end of the drive shaft, and the positioning ring is connected to the drive shaft through screws.

[0011] Preferably, an infrared sensing module is provided on one side of the positioning ring, an outward-expanding reflective sheet is provided on the inner side of the outer supporting ring, and there are eight outward-expanding reflective sheets. The outer supporting ring is connected to the tooling cabinet by screws.

[0012] Preferably, a correction slide shaft is provided on one side of the inner supporting ring, and the inner supporting ring is connected to the outer expanding reflective sheet through the correction slide shaft. An inner expanding reflective sheet is provided on the inner side of the correction slide shaft, and there are twenty-four inner expanding reflective sheets.

[0013] Preferably, the angle between the outer expansion reflectors is 45 degrees, and the angle between the inner expansion reflectors is 15 degrees.

[0014] A manufacturing process of a robot-linked welding processing equipment for a hopper includes the following steps:

[0015] Step 1: The metal hopper is composed of hopper side plates, hopper bottom plate, side plate reinforcement plate, reinforcement plate and hopper M plate. Before welding, pre-install the metal hopper on the inside of the fixture, adjust the angle of the movable wing plate, and then use the locking nut assembly to lock the hopper.

[0016] Step 2: Control the welding gun at the end of the industrial robot to weld the plates of the metal hopper. During the welding process, the fixture will rotate and cooperate, and the rotation span of the fixture can be adjusted according to different processing conditions.

[0017] Step 3: When the fixture rotates using the rotating shaft, the positioning ring on the outside of the drive shaft can sense the outward-expanding reflective sheet on the inside of the outer bearing ring and use the reflection of the infrared light source to sense the current rotation angle of the fixture;

[0018] Step 4: When performing detailed welding operations, the inner support ring and the outer support ring can be controlled to combine. After the two overlap, the inner expansion reflector on the inner side of the inner support ring will cover the outer expansion reflector. The interval angle of the inner expansion reflector is smaller than that of the outer expansion reflector, which increases the perception value of the rotation angle of the tooling fixture and adapts to high-precision welding operations.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention realizes one-time precise positioning and clamping of the hopper through the hopper welding tool, integrated operation, rapid positioning, improved work efficiency, and accurate positioning. It can also rotate 360 degrees to meet the needs of internal and external welding at different positions and angles, while improving welding quality and efficiency.

[0021] 2. In the present invention, when the damping push wheel rotates outward, the side clamping plate will move toward the side of the cabinet. At this time, the contact area between the movable wing plates at both ends of the side clamping plate and the hopper will be displaced. At the same time, the movable wing plates and the side clamping plates can also be rotated and adjusted. In this way, adaptive adjustment can be made according to different welding methods or the actual size of the hopper, avoiding the influence of the tooling fixture on the welding between the plates after the hopper is clamped and fixed;

[0022] 3. In the present invention, during the rotation process, the positioning ring at one end of the drive shaft will use the infrared sensing module to sense the information of the outward-expanding reflective sheet on the inner side of the outer supporting ring, and judge the current rotation angle of the fixture through the outward-expanding reflective sheets in different orientations, so that the machine can judge the current angular direction of the hopper, so as to facilitate the welding robot to perform welding operations. Twenty-four inward-expanding reflective sheets are provided on the inner side of the inner supporting ring. When the overall plate welding of the hopper is completed, detailed welding operations can be performed. At this time, the inner supporting ring is controlled to enter the inner side of the outer supporting ring so that the inward-expanding reflective sheet on the inner side of the inner supporting ring covers the outward-expanding reflective sheet. At this time, the infrared sensing module can only sense the orientation information of the inward-expanding reflective sheet, so that the perception value of the rotation angle of the tooling fixture can be increased, thereby adapting to the accuracy requirements of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall front view of the present invention;

[0024] Figure 2 It is an overall side view of the present invention;

[0025] Figure 3 This is a schematic diagram of the welding rotary tooling structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the fixture of the present invention;

[0027] Figure 5 This is a schematic diagram of the outer supporting ring structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the inner supporting ring structure of the present invention.

[0029] Figure: 1. Industrial robot; 2. Welding rotary fixture; 3. Metal hopper; 101. Displacement base; 102. Main link arm; 103. Auxiliary link arm; 104. Welding gun assembly; 105. Active joint; 1041. Welding pipe hoop; 201. Fixture cabinet; 202. Fixture fixture; 203. Lifting base; 204. Rotating shaft; 205. Fume frame; 206. Drive shaft; 2021. Side clamp; 2022 , supporting splint; 2023, movable wing plate; 2024, locking nut assembly; 2025, damping push wheel; 2026, expansion truss; 2041, adapter bracket; 2042, external bearing ring; 2043, alignment shaft; 2044, outward expansion reflector; 2045, internal bearing ring; 2046, correction slide shaft; 2047, inward expansion reflector; 2051, exhaust fan; 2061, positioning ring; 2062, infrared sensor module. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figure 1-2 , the present invention provides an embodiment: a robot linkage welding processing equipment for a hopper, comprising an industrial robot 1, a welding rotary tool 2 and a metal hopper 3, the industrial robot 1 comprising a displacement base 101, a main link arm 102 and an auxiliary link arm 103, the main link arm 102 and the auxiliary link arm 103 are connected by a movable joint 105, a welding gun assembly 104 is provided at one end of the auxiliary link arm 103, the welding gun assembly 104 and the auxiliary link arm 103 are connected by screws, a welding line pipe hoop 1041 is provided on one side of the welding gun assembly 104, the welding line pipe hoop 1041 and the auxiliary link arm 103 are connected by screws, the welding rotary tool 2 comprises a tool cabinet 201, a tool fixture 202 and a lifting base 203, the tool cabinet 201 and the lifting base 203 are slidably connected by a slide rail, the metal hopper 3 is arranged on the inner side of the tool fixture 202, and a rotating shaft disk 204 is provided between the tool fixture 202 and the tool cabinet 201;

[0032] Before welding, the metal hopper 3 is pre-installed on the inner side of the fixture 202, and then the industrial robot 1 is controlled to operate the welding gun at the end to weld the plates of the metal hopper 3. During the welding process, the fixture 202 will rotate and cooperate, and the rotation span of the fixture 202 can be adapted and adjusted according to different processing conditions. The hopper welding fixture is used to achieve one-time precise positioning and clamping of the hopper, integrated operation, rapid positioning, improved work efficiency, and accurate positioning. It can also rotate 360 degrees to meet internal and external welding at different positions and angles, while improving welding quality and welding efficiency. It solves the problem that the hopper in the existing technology has poor automation effect in welding work, is inconvenient to operate, affects work efficiency, and is easily deformed to achieve unqualified quality.

[0033] See also Figure 3-4 The fixture 202 includes a side clamp 2021 and a supporting clamp 2022. The side clamp 2021 is located on the left and right sides of the metal hopper 3, and the supporting clamp 2022 is located on the upper and lower sides of the metal hopper 3. The inner sides of both ends of the side clamp 2021 are provided with movable wing plates 2023. The movable wing plates 2023 are rotatably connected to the side clamp 2021. An expansion truss 2026 is provided above the supporting clamp 2022, and a flue gas frame 205 is provided below the supporting clamp 2022. The frame 205 and the expansion truss 2026 are connected to the supporting splint 2022 by screws. An exhaust fan 2051 is provided on the outer surface of the flue frame 205. A damping push wheel 2025 is provided at the connection between the side splint 2021 and the supporting splint 2022. The damping push wheel 2025 is rotatably connected to the supporting splint 2022 and is fitted to the side splint 2021. Locking nut assemblies 2024 are provided on the inner sides of the movable wing 2023 and the flue frame 205.

[0034] When the damping push wheel 2025 rotates outward, the side clamping plate 2021 will move toward the side of the cabinet. At this time, the contact area between the movable wing plates 2023 at both ends of the side clamping plate 2021 and the hopper will be displaced. At the same time, the movable wing plates 2023 and the side clamping plates 2021 can also be rotated and adjusted. In this way, adaptive adjustment can be made according to different welding methods or the actual size of the hopper, avoiding that the fixture 202 affects the welding between the plates after the hopper is clamped and fixed.

[0035] Two sets of exhaust fans 2051 are installed inside the smoke frame 205 at one end of the bottom of the supporting splint 2022. The exhaust fans 2051 can be started during the welding process to suck the smoke generated during welding into the corresponding pipes and discharge them in a centralized manner to prevent harmful smoke from spreading into the entire working environment.

[0036] See also Figure 5-6 The rotating shaft disk 204 is connected to the supporting splint 2022 through the adapter bracket 2041. The inner side of the rotating shaft disk 204 is provided with an outer bearing ring 2042. The outer surface of the outer bearing ring 2042 is provided with an alignment shaft rod 2043. The other end of the alignment shaft rod 2043 is provided with an inner bearing ring 2045. The inner bearing ring 2045 is telescopically connected to the alignment shaft rod 2043. The inner side of the outer bearing ring 2042 is provided with a driving shaft 206. The rotating shaft disk 204 is rotatably connected to the tooling cabinet 201 through the driving shaft 206. One end of the driving shaft 206 is provided with a positioning ring 2061. The positioning ring 2061 is connected to the driving shaft 206 by screws. The positioning ring An infrared sensor module 2062 is provided on one side of 2061. Eight outward-expanding reflective sheets 2044 are provided on the inner side of the outer supporting ring 2042. The outer supporting ring 2042 is connected to the tooling cabinet 201 via screws. A correction slide 2046 is provided on one side of the inner supporting ring 2045. The inner supporting ring 2045 is fittedly connected to the outward-expanding reflective sheets 2044 via the correction slide 2046. Twenty-four inward-expanding reflective sheets 2047 are provided on the inner side of the correction slide 2046. The angles between the outward-expanding reflective sheets 2044 are 45 degrees, and the angles between the inward-expanding reflective sheets 2047 are 15 degrees.

[0037] The outer supporting ring 2042 and the cabinet are fixedly mounted, while the inner supporting ring 2045 and the outer supporting ring 2042 can realize telescopic sliding operation through the alignment shaft 2043. The motor drives the rotating shaft disk 204 and the outer clamp to rotate through the drive shaft 206. During the rotation, the positioning ring 2061 at one end of the drive shaft 206 will use the infrared sensing module 2062 to sense the information of the outward-expanding reflective sheet 2044 on the inner side of the outer supporting ring 2042. The outward-expanding reflective sheet 2044 in different directions is used to determine the current rotation angle of the clamp, which is convenient for the machine to determine the current angle of the hopper. In order to facilitate the welding operation of the welding robot, twenty-four inward-expanding reflective sheets 2047 are set on the inner side of the inner supporting ring 2045. When the welding of the entire plate of the hopper is completed, detailed welding operations can be carried out. At this time, the inner supporting ring 2045 is controlled to enter the inner side of the outer supporting ring 2042, so that the inward-expanding reflective sheets 2047 on the inner side of the inner supporting ring 2045 cover the outer-expanding reflective sheets 2044. At this time, the infrared sensing module 2062 can only sense the orientation information of the inward-expanding reflective sheets 2047, so that the perception value of the rotation angle of the tooling fixture 202 can be increased, thereby adapting to the accuracy requirements of welding.

[0038] A manufacturing process of a robot-linked welding processing equipment for a hopper includes the following steps:

[0039] Step 1: The metal hopper 3 is composed of a hopper side plate, a hopper bottom plate, a side plate reinforcement plate, a reinforcement plate, and a hopper M plate. Before welding, pre-install the metal hopper 3 on the inner side of the fixture 202. Adjust the angle of the movable wing plate 2023 and then lock the hopper with the locking nut assembly 2024.

[0040] Step 2: Control the industrial robot 1 to operate the welding gun at the end to weld the plates of the metal hopper 3. During the welding process, the fixture 202 will rotate and cooperate, and the rotation span of the fixture 202 can be adjusted according to different processing conditions.

[0041] Step 3: As the fixture 202 rotates using the rotating shaft disk 204, the positioning ring 2061 on the outside of the drive shaft 206 can sense the outward-expanding reflective sheet 2044 on the inside of the outer support ring 2042 and use the reflection of the infrared light source to sense the current rotation angle of the fixture 202;

[0042] Step 4: When performing detailed welding operations, the inner support ring 2045 and the outer support ring 2042 can be controlled to be combined. After the two overlap, the inner-expanding reflective sheet 2047 on the inner side of the inner support ring 2045 will cover the outer-expanding reflective sheet 2044. The interval angle of the inner-expanding reflective sheet 2047 is smaller than that of the outer-expanding reflective sheet 2044, which increases the perception value of the rotation angle of the tooling fixture 202 and adapts to high-precision welding operations.

[0043] Working principle: before welding, the metal hopper 3 is pre-installed on the inner side of the fixture 202, and then the industrial robot 1 is controlled to operate the welding gun at the end to weld the plates of the metal hopper 3. During the welding process, the fixture 202 will rotate and cooperate, and the rotation span of the fixture 202 can be adapted and adjusted according to different processing conditions. The motor drives the rotating shaft disk 204 and the outer fixture to rotate through the drive shaft 206. During the rotation, the positioning ring 2061 at one end of the drive shaft 206 will use the infrared sensing module 2062 to sense the information of the outward-expanding reflective sheet 2044 on the inner side of the outer bearing ring 2042. The outer bearing ring 2042 and the cabinet are fixed installation structures, while the inner inner bearing ring 2045 and the outer bearing ring 2042 can be aligned through the shaft rod. 2043 is used to realize telescopic sliding operation, and the outward-expanding reflective sheets 2044 in different directions are used to determine the rotation angle of the current fixture, so that the machine can judge the current angular direction of the hopper, so as to facilitate the welding operation of the welding robot. Twenty-four inward-expanding reflective sheets 2047 are arranged on the inner side of the inner supporting ring 2045. When the overall plate welding of the hopper is completed, detailed welding operations can be carried out. At this time, the inner supporting ring 2045 is controlled to enter the inner side of the outer supporting ring 2042, so that the inward-expanding reflective sheet 2047 on the inner side of the inner supporting ring 2045 covers the outward-expanding reflective sheet 2044. At this time, the infrared sensing module 2062 can only sense the orientation information of the inward-expanding reflective sheet 2047, so that the perception value of the rotation angle of the tooling fixture 202 can be increased, thereby adapting to the accuracy requirements of welding.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A robot-linked welding processing equipment for a hopper, comprising an industrial robot (1), a welding rotary tool (2) and a metal hopper (3), characterized in that: The industrial robot (1) comprises a displacement base (101), a main link arm (102) and an auxiliary link arm (103), the main link arm (102) and the auxiliary link arm (103) being connected via a movable joint (105), a welding gun assembly (104) being provided at one end of the auxiliary link arm (103), the welding gun assembly (104) being connected to the auxiliary link arm (103) via screws, a welding line pipe hoop (1041) being provided at one side of the welding gun assembly (104), the welding line pipe hoop (1041) being connected to the auxiliary link arm (103) via screws; The welding rotary tool (2) comprises a tool cabinet (201), a tool fixture (202) and a lifting base (203); the tool cabinet (201) and the lifting base (203) are slidably connected via a slide rail; the metal hopper (3) is arranged on the inner side of the tool fixture (202); and a rotating shaft disk (204) is provided between the tool fixture (202) and the tool cabinet (201); The rotating shaft disc (204) is connected to the supporting splint (2022) via an adapter bracket (2041); an outer bearing ring (2042) is provided on the inner side of the rotating shaft disc (204); an alignment shaft rod (2043) is provided on the outer surface of the outer bearing ring (2042); an inner bearing ring (2045) is provided on the other end of the alignment shaft rod (2043); and the inner bearing ring (2045) is telescopically connected to the alignment shaft rod (2043); A driving shaft (206) is provided on the inner side of the outer bearing ring (2042), and the rotating shaft disc (204) is rotatably connected to the tooling cabinet (201) via the driving shaft (206). A positioning ring (2061) is provided at one end of the driving shaft (206), and the positioning ring (2061) is connected to the driving shaft (206) via screws. An infrared sensing module (2062) is provided on one side of the positioning ring (2061), an outward-expanding reflective sheet (2044) is provided on the inner side of the outer supporting ring (2042), and there are eight outward-expanding reflective sheets (2044). The outer supporting ring (2042) is connected to the tooling cabinet (201) via screws; A correction slide shaft (2046) is provided on one side of the inner supporting ring (2045), and the inner supporting ring (2045) is connected to the outer expansion reflective sheet (2044) via the correction slide shaft (2046). An inner expansion reflective sheet (2047) is provided on the inner side of the correction slide shaft (2046), and there are twenty-four inner expansion reflective sheets (2047).

2. The robot-linked welding processing equipment for a hopper according to claim 1, characterized in that: The fixture (202) comprises a side clamp (2021) and a supporting clamp (2022), wherein the side clamp (2021) is located on the left and right sides of the metal hopper (3), and the supporting clamp (2022) is located on the upper and lower sides of the metal hopper (3), and movable wing plates (2023) are provided on the inner sides of both ends of the side clamp (2021).

3. The robot-linked welding processing equipment for a hopper according to claim 2, characterized in that: The movable wing plate (2023) is rotatably connected to the side clamp plate (2021); an expansion truss (2026) is provided above the supporting clamp plate (2022); a smoke frame (205) is provided below the supporting clamp plate (2022); the smoke frame (205) and the expansion truss (2026) are all connected to the supporting clamp plate (2022) via screws; an exhaust fan (2051) is provided on the outer surface of the smoke frame (205).

4. The robot-linked welding processing equipment for a hopper according to claim 3, characterized in that: A damping push wheel (2025) is provided at the connection between the side clamping plate (2021) and the supporting clamping plate (2022); the damping push wheel (2025) is rotatably connected to the supporting clamping plate (2022); the damping push wheel (2025) is fittedly connected to the side clamping plate (2021); and locking nut assemblies (2024) are provided on the inner sides of the movable wing plate (2023) and the smoke frame (205).

5. The robot-linked welding processing equipment for a hopper according to claim 4, characterized in that: The included angles between the outward-expanding reflective sheets (2044) are 45°, and the included angles between the inward-expanding reflective sheets (2047) are 15°.

6. A manufacturing process of a robot-linked welding processing equipment for a hopper, which is realized based on the robot-linked welding processing equipment for a hopper according to claim 5, wherein: The steps include: Step 1: The metal hopper (3) is composed of a hopper side plate, a hopper bottom plate, a side plate reinforcement plate, a reinforcement plate, and a hopper M plate. Before welding, the metal hopper (3) is pre-installed on the inner side of the fixture (202), and the hopper is locked and fixed by adjusting the angle of the movable wing plate (2023) and then cooperating with the locking nut assembly (224); Step 2: Control the industrial robot (1) to operate the welding gun at the end to weld the plates of the metal hopper (3). During the welding process, the fixture (202) will rotate and cooperate, and the rotation span of the fixture (202) can be adapted and adjusted according to different processing conditions; Step 3: When the fixture (202) rotates using the rotating shaft disk (204), the positioning ring (2061) on the outside of the driving shaft (206) can sense the outward-expanding reflective sheet (2044) on the inside of the outer ring (2042) and sense the current rotation angle of the fixture (202) by using the reflection of the infrared light source; Step 4: When performing detailed welding operations, the inner support ring (2045) and the outer support ring (2042) can be controlled to be combined. After the two overlap, the inner expansion reflective sheet (2047) on the inner side of the inner support ring (2045) will cover the outer expansion reflective sheet (2044). The interval angle of the inner expansion reflective sheet (2047) is smaller than that of the outer expansion reflective sheet (2044), thereby increasing the perception value of the rotation angle of the tooling fixture (202) and adapting to high-precision welding operations.

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