High-precision instrument welding clamping mechanism

Abstract

The application is suitable for the technical field of instrument welding, and provides a high-precision instrument welding clamping mechanism, which comprises an upper base, a lower base, a three-point centering clamping module, a longitudinal movement module, a height self-adjusting platform and a lateral clamping module. The lateral clamping module is composed of a driving mechanism, a distance adjusting mechanism and a lateral clamping mechanism. The lateral clamping mechanism is composed of a mounting assembly, a clamping pulley, a limiting assembly and a reversing assembly. The distance adjusting mechanism cooperates with the driving mechanism to enable the clamping pulley to adaptively clamp different specifications of dial structures. The reversing assembly reversely corrects the deviation angle generated when the clamping pulley revolves around the driving mechanism and the distance adjusting mechanism, so that the clamping pulley is always perpendicular to the lateral section of the dial structure, thereby ensuring the clamping stability of the dial structure. The limiting assembly cooperates with the height self-adjusting platform to adaptively adjust the vertical height of the dial structure, thereby improving the attitude consistency and position stability of the dial structure and the joint structure during the welding process.

Description

Technical Field

[0001] This invention belongs to the field of instrument welding technology, and in particular relates to a high-precision instrument welding clamping mechanism. Background Technology

[0002] In the manufacturing process of high-precision instruments (such as pressure transmitters, flow sensors, or optical measuring instruments), the main body of the instrument is usually assembled by welding the joint structure and the dial structure. The welding accuracy directly determines the measurement accuracy, sealing performance, and service life of the instrument. Since the measurement error requirements of high-precision instruments are usually high, the coaxiality and orientation consistency of the joint structure and the dial structure must be strictly ensured during welding.

[0003] The existing welding clamping mechanism includes a main frame of welding fixture, with a clamping drive component fixedly connected to the upper part of the main frame and a centering drive component fixedly connected to the lower part of the main frame. The synchronous clamping block is driven to move in the opposite direction through worm gear transmission, and the clamping arc plate and the centering angle frame are used to achieve coaxial positioning of cylindrical workpieces, which solves the problem of large coaxiality deviation when traditional tubular parts are connected.

[0004] However, it still has certain technical defects in actual production applications: First, the clamping components of the existing clamping mechanism (such as clamping arc plates or centering angle brackets) are mostly special designs adapted to cylindrical structures, relying on concentric slides to achieve spacing adjustment, which can only cover a limited diameter range and cannot be compatible with round block, polygonal or irregularly shaped dials with arc contours, resulting in certain limitations of the clamping mechanism in actual applications.

[0005] Secondly, the core design of the existing mechanism is only for the coaxiality calibration of the cylindrical structure. However, the assembly reference of the irregular dial and the joint structure is not a single coaxial relationship and there is often a pre-set eccentricity difference. Since the existing mechanism lacks eccentricity compensation design, it is impossible to adjust the positioning reference according to the structural characteristics of the irregular dial, resulting in poor welding quality of the instrument.

[0006] Therefore, in view of the above situation, there is an urgent need to develop a high-precision instrument welding clamping mechanism to overcome the shortcomings in current practical applications. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a high-precision instrument welding clamping mechanism to solve the problems mentioned in the background technology.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A high-precision instrument welding clamping mechanism includes an upper base, a lower base, a three-point centering clamping module, a longitudinal movement module, and a height self-adjusting platform. The upper base is fixed directly above the lower base. The three-point centering clamping module is connected to the longitudinal movement module. Fixed columns are circumferentially distributed on the other side of the upper base. One end of the height self-adjusting platform is fixed to the top of the lower base, and the other end extends above the upper base and supports the dial structure of the instrument body. The mechanism also includes:

[0010] A lateral clamping module, comprising a drive mechanism, an adjustment mechanism and a lateral clamping mechanism, wherein one end of the drive mechanism is mounted on the lower base, and the other end of the drive mechanism is slidably mounted in longitudinal slides symmetrically opened at the bottom of the upper base, and the other end of the drive mechanism is connected to one end of the adjustment mechanism.

[0011] The other end of the adjusting mechanism is equidistantly distributed around the center of the upper base and slidably installed in the arc-shaped slide rail distributed around the center of the upper base on the other side. The center of the arc-shaped slide rail is eccentrically set with the center of the upper base on the other side in a preset direction. A lateral clamping mechanism is installed on the adjusting mechanism.

[0012] The lateral clamping mechanism consists of an installation component, a clamping pulley, a limiting component, and a reversing component. The installation component is vertically arranged and rotatably connected to the adjusting mechanism. The clamping pulley is installed on the inner side of the installation component. The limiting component is installed on the installation component and cooperates with one side of the clamping pulley. One end of the reversing component is connected to the fixed column, and the other end of the reversing component is connected to the installation component.

[0013] The adjusting mechanism works in conjunction with the drive mechanism to adjust the relative distance between the clamping pulleys distributed on both sides of the same axial slide. The reversing component works in conjunction with the drive mechanism and the adjusting mechanism to correct the deviation angle generated when the clamping pulleys revolve. The limiting component works in conjunction with the height self-adjusting platform to adaptively adjust the vertical height of the dial structure.

[0014] As a further technical solution of the present invention, the mounting assembly includes a vertical rotating shaft, a vertical sleeve, a mounting base, an annular base plate, and a vertical spring. The vertical rotating shaft is vertically arranged and rotatably mounted on the adjusting mechanism. The vertical sleeve is vertically slidably mounted on the vertical rotating shaft. A mounting clamp is fixed to the top end of the vertical sleeve, and an annular base plate is fixed to the bottom end of the vertical sleeve. A vertical spring is installed between the annular base plate and the adjusting mechanism. The outer wall of the vertical sleeve is concentrically connected to one end of the reversing assembly. A clamping pulley is rotatably mounted on the inner side of the mounting base, and a limiting assembly that cooperates with the clamping pulley is mounted on the outer side of the mounting base.

[0015] As a further technical solution of the present invention, the limiting component includes a horizontal sliding column, a U-shaped limiting plate, a strip friction pad, a limiting spring, a limiting stud, and a limiting sleeve. The horizontal sliding column is horizontally slidably installed on the outside of the mounting base. A limiting spring is installed between one end of the horizontal sliding column and the mounting base. The other end of the horizontal sliding column extends to the inside of the mounting base and is vertically fixedly connected to the U-shaped limiting plate. The U-shaped limiting plate is parallel to the clamping pulley. A strip friction pad that rubs against the outer surface of the clamping pulley is fixed on the inside of the U-shaped limiting plate. The limiting sleeve is horizontally fixed on the outside of the mounting base. A limiting stud is threaded onto the limiting sleeve. One end of the limiting stud extends to the inside of the mounting base and contacts the outer surface of the U-shaped limiting plate.

[0016] As a further technical solution of the present invention, an annular groove is provided in the middle of the clamping pulley, and an annular friction pad protruding from the outer surface of the clamping pulley is installed in the annular groove. One side of the annular friction pad is in frictional connection with the side wall of the dial structure, and the other side of the annular friction pad is in frictional engagement with the strip friction pad.

[0017] As a further technical solution of the present invention, the reversing component includes a reversing gear and an arc-shaped gear ring. One side of the arc-shaped gear ring is fixed on a fixed column, and the arc-shaped gear ring is concentric with the arc-shaped slide. The reversing gear is fixed on the outer wall of the vertical sleeve and meshes with the arc-shaped gear ring.

[0018] As a further technical solution of the present invention, the reversing gear and the arc-shaped gear ring have the same module and pressure angle, and the transmission ratio between the reversing gear and the arc-shaped gear ring is the same as the transmission ratio generated by the revolution.

[0019] As a further technical solution of the present invention, the driving mechanism includes a drive motor, a transmission component, a double-rotating screw, and an axial slider. The drive motor is fixed on the lower base. The double-rotating screw is parallel to the axial slide rail and rotatably mounted on the bottom of the upper base. One end of the double-rotating screw is connected to the output end of the drive motor through the transmission component. The axial slider is symmetrically slidably mounted in two axial slide rails, and the two axial sliders are respectively threaded to both ends of the double-rotating screw. Both axial sliders are connected to the adjusting mechanism.

[0020] As a further technical solution of the present invention, the adjusting mechanism includes a longitudinal guide post, a longitudinal slider, an adjusting guide post, and an arc-shaped slider. The longitudinal guide post is perpendicular to the axial slide rail and is fixedly connected to the axial slider. The longitudinal sliders are symmetrically distributed on both sides of the axial slide rail and are slidably engaged with the two ends of the same longitudinal guide post. The adjusting guide posts are symmetrically distributed on both sides of the axial slide rail. One end of the adjusting guide post is rotatably mounted on the bottom of the upper base. The middle part of the adjusting guide post is slidably engaged with the longitudinal slider. The other end of the adjusting guide post is connected to the bottom of the arc-shaped slider. The adjusting guide post is inclined to the longitudinal guide post, and the rotation fulcrum of the adjusting guide post is concentrically set with the center of the arc-shaped slide rail. The arc-shaped slider is slidably mounted in the arc-shaped slide rail, and a vertical rotating shaft is rotatably mounted on the top of the arc-shaped slider.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The drive mechanism, in conjunction with the adjusting mechanism, can drive the mounting component, clamping pulley, and limiting component to revolve along the arc-shaped slide. Due to the cooperation between the reversing component and the fixed column, it can drive the mounting component to rotate in the opposite direction on the adjusting mechanism, thereby driving the clamping pulley and limiting component to rotate in the opposite direction. The reverse rotation of the clamping pulley can offset the angular deviation generated during its revolution, ensuring that it is always aligned with the center of the other side of the upper base and always perpendicular to the lateral sectional plane of the dial structure. This ensures that the clamping pulley can fully and effectively clamp the side wall of the dial structure, improving the posture consistency and positional stability of the dial structure and the joint structure during the welding process. At the same time, the adjusting mechanism can change the distance between the adjusting mechanisms located on both sides of the slide on the same axis by sliding within the arc-shaped slide, thereby achieving adaptive clamping of dial structures of different specifications and improving the adaptability and practicality of the clamping mechanism.

[0023] Meanwhile, when the limiting component is in the unlocked state and the clamping pulley is not limited, the clamping pulley rotates freely on the mounting component and can form a frictionless relative sliding with the side wall of the dial structure. The height self-adjusting platform adjusts the vertical height of the dial structure, so that the side wall of the dial structure can rise or fall to a welding height that matches the joint structure. After the height is calibrated, the limiting component switches to the locked state and limits and fixes the clamping pulley, preventing it from rotating and preventing relative sliding with the side wall of the dial structure. This completes the stable limitation of the dial structure, ensuring the consistency of its posture and position stability during the welding process with the joint structure, and improving the welding quality and efficiency of the dial structure and the joint structure.

[0024] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 A schematic diagram of the operation of the high-precision instrument welding clamping mechanism provided in an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the high-precision instrument welding clamping mechanism provided in an embodiment of the present invention.

[0027] Figure 3 This is a bottom view of the structure of the high-precision instrument welding clamping mechanism provided in an embodiment of the present invention.

[0028] Figure 4 for Figure 3 A bottom view of the structure behind the hidden base.

[0029] Figure 5 for Figure 2 A schematic diagram of the drive mechanism, the distance adjustment mechanism, and the lateral clamping mechanism.

[0030] Figure 6 for Figure 5 A schematic diagram of the drive mechanism and the adjusting mechanism.

[0031] Figure 7 for Figure 5 A schematic diagram of the middle lateral clamping mechanism.

[0032] Figure 8 for Figure 7 The structural side view of the installed and inverted components.

[0033] Figure 9 for Figure 8 Exploded view of the structure of the mounting component and the inverted component.

[0034] Figure 10 for Figure 7 A schematic diagram of the structure of the clamping pulley and the limiting assembly.

[0035] Figure 11 for Figure 10 Exploded view of the structure of the clamping pulley and limiting assembly.

[0036] Reference numerals: 100-lower base, 200-upper base, 210-longitudinal slide rail, 220-arc slide rail, 230-axial slide rail, 300-three-point centering clamping module, 310-longitudinal movement module, 400-drive mechanism, 410-drive motor, 420-transmission component, 430-double-rotary screw, 440-axial slider, 500-adjustment mechanism, 510-longitudinal guide post, 520-longitudinal slider, 530-adjustment guide post, 540-arc slide rail, 600-lateral clamping mechanism, 610-mounting assembly, 6 11-Vertical rotating shaft, 612-Vertical sleeve, 613-Mounting base, 614-Annular base plate, 615-Vertical spring, 620-Clamping pulley, 630-Annular friction pad, 640-Limiting assembly, 641-Horizontal sliding column, 642-U-shaped limiting plate, 643-Strip friction pad, 644-Limiting spring, 645-Limiting stud, 646-Limiting threaded sleeve, 650-Reversing assembly, 651-Reversing gear, 652-Arc-shaped gear ring, 700-Instrument body, 800-Height self-adjusting platform, 900-Fixing column. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0039] like Figures 1 to 11 As shown, a high-precision instrument welding clamping mechanism provided as an embodiment of the present invention includes an upper base 200, a lower base 100, a three-point centering clamping module 300, a longitudinal movement module 310, and a height self-adjusting platform 800. The upper base 200 is fixed directly above the lower base 100. A longitudinal slide 210 for moving the three-point centering clamping module 300 is provided on one side of the upper base 200. The three-point centering clamping module 300 is connected to the longitudinal movement module 310 fixed on one side of the upper base 200. The three-point centering clamping module 300 is used to center and clamp the joint structure of the instrument body 700. Fixed columns 900 are distributed circumferentially on the other side of the upper base 200. One end of the height self-adjusting platform 800 is fixed to the top of the lower base 100, and the other end of the height self-adjusting platform 800 extends above the upper base 200. Its top surface is used to support the dial structure of the instrument body 700. The mechanism also includes:

[0040] A lateral clamping module is provided, comprising a drive mechanism 400, an adjustment mechanism 500, and a lateral clamping mechanism 600. One end of the drive mechanism 400 is mounted on the lower base 100, and the other end of the drive mechanism 400 is slidably mounted in the longitudinal slide rails 210 symmetrically opened at the bottom of the upper base 200. The other end of the drive mechanism 400 is connected to one end of the adjustment mechanism 500.

[0041] The other end of the adjusting mechanism 500 is equidistantly distributed around the center of the upper base 200 and slidably installed in the arc-shaped slide rail 220 distributed around the center of the upper base 200 on the other side. The center of the arc-shaped slide rail 220 is eccentrically set with the center of the upper base 200 on the other side in a preset direction. A lateral clamping mechanism 600 is installed on the adjusting mechanism 500.

[0042] The lateral clamping mechanism 600 consists of an installation assembly 610, a clamping pulley 620, a limiting assembly 640, and a reversing assembly 650. The installation assembly 610 is vertically arranged and rotatably connected to the adjusting mechanism 500. The clamping pulley 620 is installed on the inner side of the installation assembly 610. The limiting assembly 640 is installed on the installation assembly 610 and cooperates with one side of the clamping pulley 620. One end of the reversing assembly 650 is connected to the fixed post 900, and the other end of the reversing assembly 650 is connected to the installation assembly 610.

[0043] Based on the external dimensions of the dial structure on the instrument body 700, the drive mechanism 400 drives the adjusting mechanism 500 to rotate along the arc-shaped slide 220. The adjusting mechanism 500 drives the mounting assembly 610, the clamping pulley 620, and the limiting assembly 640 to revolve along the arc-shaped slide 220. Due to the cooperation between the reversing assembly 650 and the fixed column 900, it can drive the mounting assembly 610 to rotate in the opposite direction on the adjusting mechanism 500, thereby driving the clamping pulley 620 and the limiting assembly 640 to rotate in the opposite direction. The reverse rotation of the clamping pulley 620 can counteract the angle generated during its revolution. The degree deviation is controlled so that it is always aligned with the center of the other side of the upper base 200 and always perpendicular to the lateral sectional plane of the dial structure. This ensures that the clamping pulley 620 can fully and effectively clamp the side wall of the dial structure, improving the posture consistency and positional stability of the dial structure and the joint structure during the welding process. At the same time, the distance adjustment mechanism 500 can change the distance between the two adjustment mechanisms 500 located on both sides of the same axial slide 230 by sliding within the arc slide 220, thereby realizing the adaptive clamping of dial structures of different specifications and improving the adaptability and practicality of the clamping mechanism.

[0044] Initially, the limiting component 640 is in the unlocked state and does not limit the clamping pulley 620. The clamping pulley 620 rotates freely on the mounting component 610 and can form a frictionless relative sliding with the side wall of the dial structure. The height self-adjusting platform 800 adjusts the vertical height of the dial structure, so that the side wall of the dial structure can rise or fall to a welding height that matches the joint structure. After the height is calibrated, the limiting component 640 switches to the locked state and limits and fixes the clamping pulley 620, preventing it from rotating and preventing relative sliding with the side wall of the dial structure. This completes the stable limitation of the dial structure, ensuring the consistency of its posture and position stability during the welding process with the joint structure, and improving the welding quality and welding efficiency of the dial structure and the joint structure.

[0045] In a preferred embodiment, the three-point centering clamping module 300 is preferably composed of an annular frame, three clamping cylinders and three clamping arc plates. The three clamping cylinders are fixed at equal intervals on the annular frame along the circumferential direction of the center of the annular frame. The output ends of the three clamping cylinders are all aligned with the center of the annular frame, and the output ends of the three clamping cylinders are all fixed with clamping arc plates for clamping and fixing the connector structure of the instrument body 700.

[0046] The longitudinal movement module 310 preferably consists of a longitudinal movement motor and a longitudinal screw. The longitudinal screw is threadedly connected to the ring frame. The longitudinal movement motor drives the longitudinal screw to rotate, and the longitudinal screw drives the ring frame to slide within the longitudinal slide rail 210, so that the ring frame can drive the fixed joint structure inside it to move, thereby changing the distance between the joint structure and the dial structure.

[0047] like Figures 5 to 11 As shown, in a preferred embodiment of the present invention, the mounting assembly 610 includes a vertical rotating shaft 611, a vertical sleeve 612, a mounting base 613, an annular base plate 614, and a vertical spring 615. The vertical rotating shaft 611 is vertically arranged and rotatably mounted on the adjusting mechanism 500. The vertical sleeve 612 is vertically slidably mounted on the vertical rotating shaft 611. A mounting clamp is fixed to the top end of the vertical sleeve 612, and an annular base plate 614 is fixed to the bottom end of the vertical sleeve 612. A vertical spring 615 is installed between the annular base plate 614 and the adjusting mechanism 500. The outer wall of the vertical sleeve 612 is concentrically connected to one end of the reversing assembly 650. A clamping pulley 620 is rotatably mounted on the inner side of the mounting base 613, and a limiting assembly 640 that cooperates with the clamping pulley 620 is mounted on the outer side of the mounting base 613.

[0048] As the adjusting mechanism 500 slides along the arc-shaped slide rail 220, it drives the vertical rotating shaft 611 and the vertical sleeve 612 to rotate synchronously along the arc-shaped slide rail 220. The vertical sleeve 612 drives one end of the mounting base 613, the clamping pulley 620, and the reversing component 650 to rotate synchronously, thereby changing the relative distance between the clamping pulleys 620 distributed on both sides of the same axial slide rail 230. At the same time, the other end of the reversing component 650, through cooperation with the fixed column 900, can drive one end of it to rotate in the opposite direction. One end of the reversing component 650 drives the vertical sleeve 612 and the vertical rotating shaft 611 to rotate synchronously along the arc-shaped slide rail 220. The vertical sleeve 612 rotates in the opposite direction, driving the mounting base 613 and the clamping pulley 620 to rotate synchronously in the opposite direction. The reverse rotation of the clamping pulley 620 can offset the angular deviation caused by its revolution, ensuring that it is always aligned with the center of the other side of the upper base 200 and always perpendicular to the lateral sectional plane of the dial structure. This ensures that the clamping pulley 620 can fully and effectively clamp the side wall of the dial structure, improving the posture consistency and positional stability during the welding process of the dial structure and the joint structure. This allows multiple clamping pulleys 620 to adaptably clamp dial structures of different specifications, improving the adaptability and practicality of the clamping mechanism.

[0049] like Figures 5 to 11 As shown, in a preferred embodiment of the present invention, the limiting assembly 640 includes a horizontal sliding column 641, a U-shaped limiting plate 642, a strip friction pad 643, a limiting spring 644, a limiting stud 645, and a limiting screw sleeve 646. The horizontal sliding column 641 is horizontally slidably mounted on the outside of the mounting base 613. A limiting spring 644 is installed between one end of the horizontal sliding column 641 and the mounting base 613. The other end of the horizontal sliding column 641 extends to the inside of the mounting base 613 and is connected to the U-shaped limiting plate 642. A U-shaped limiting plate 642 is vertically fixedly connected. The U-shaped limiting plate 642 is parallel to the clamping pulley 620. A strip-shaped friction pad 643 that rubs against the outer surface of the clamping pulley 620 is fixed on the inner side of the U-shaped limiting plate 642. A limiting screw sleeve 646 is horizontally fixed on the outer side of the mounting base 613. A limiting stud 645 is threaded on the limiting screw sleeve 646. One end of the limiting stud 645 extends to the inner side of the mounting base 613 and contacts the outer surface of the U-shaped limiting plate 642.

[0050] Initially, there is a certain distance difference between one end of the limiting stud 645 and the U-shaped limiting plate 642. The limiting spring 644 releases its own elastic force to drive the horizontal slide column 641 to move towards the outside of the mounting base 613. The horizontal slide column 641 drives the U-shaped limiting plate 642 and the strip friction pad 643 away from the clamping pulley 620, so that the strip friction pad 643 is in the unlocked state and does not limit the clamping pulley 620. The clamping pulley 620 rotates freely on the mounting component 610 and can form a frictionless relative sliding with the side wall of the dial structure. The height self-adjusting platform 800 adjusts the vertical height of the dial structure so that the side wall of the dial structure can rise or fall to a welding height that matches the joint structure.

[0051] After the height of the dial structure is calibrated, the limiting stud 645 is driven to rotate within the limiting sleeve 646, causing one end of the limiting stud 645 to move towards the U-shaped limiting plate 642 and push the U-shaped limiting plate 642 towards the clamping pulley 620. The limiting spring 644 is compressed, and the U-shaped limiting plate 642 drives the strip friction pad 643 towards the clamping pulley 620, allowing the strip friction pad 643 and the U-shaped limiting plate 642 to fully contact the outer surface of the clamping pulley 620. This achieves the limiting and fixing of the clamping pulley 620, preventing it from rotating and eliminating relative sliding between it and the side wall of the dial structure. This completes the stable restriction of the dial structure, ensuring the consistency of its posture and positional stability during the welding process with the joint structure, and improving the welding quality and efficiency of the dial structure and the joint structure.

[0052] The clamping pulley 620 has an annular groove in the middle, and an annular friction pad 630 protruding from the outer surface of the clamping pulley 620 is installed in the annular groove. One side of the annular friction pad 630 is in frictional contact with the side wall of the dial structure, and the other side of the annular friction pad 630 is in frictional engagement with the strip friction pad 643.

[0053] In a preferred embodiment, friction grooves are provided on both the strip friction pad 643 and the annular friction pad 630, which can increase the coefficient of friction between the annular friction pad 630 and the strip friction pad 643 or the side wall of the dial structure, thereby fully improving the locking and unlocking states of the limiting component 640.

[0054] like Figures 5 to 9 As shown, in a preferred embodiment of the present invention, the reversing assembly 650 includes a reversing gear 651 and an arc-shaped gear ring 652. One side of the arc-shaped gear ring 652 is fixed on the fixing post 900, and the arc-shaped gear ring 652 is concentric with the arc-shaped slide 220. The reversing gear 651 is fixed on the outer wall of the vertical sleeve 612 and meshes with the arc-shaped gear ring 652.

[0055] As the adjusting mechanism 500 slides along the arc-shaped slide 220, it can drive the vertical rotating shaft 611 and the vertical sleeve 612 to rotate synchronously along the arc-shaped slide 220. The vertical sleeve 612 drives the mounting base 613, the clamping pulley 620 and the reversing gear 651 to rotate synchronously, thereby changing the relative distance between the clamping pulleys 620 distributed on both sides of the slide 230 in the same axial direction. This allows multiple clamping pulleys 620 to adaptably clamp different specifications of dial structures, improving the adaptability and practicality of the clamping mechanism.

[0056] Since the arc-shaped gear ring 652 is always stationary relative to the fixed column 900, the reversing gear 651 can cooperate with the arc-shaped gear ring 652 during its revolution and drive the vertical sleeve 612 to rotate in the opposite direction on the adjusting mechanism 500. This causes the mounting base 613 and the clamping pulley 620 to rotate in the opposite direction synchronously. The reverse rotation of the clamping pulley 620 can offset the angular deviation generated during its revolution, so that it is always aligned with the center of the other side of the upper base 200 and always perpendicular to the lateral sectional plane of the dial structure. This ensures that the clamping pulley 620 can fully and effectively clamp the side wall of the dial structure, improving the posture consistency and positional stability during the welding process of the dial structure and the joint structure.

[0057] Initially, the vertical spring 615 releases its elastic force and drives the annular base plate 614 and the vertical sleeve 612 to move vertically on the vertical shaft 611. The vertical sleeve 612 drives the reversing gear 651 to move upward to a position where it stably meshes with the arc-shaped gear ring 652, ensuring that the reversing assembly 650 can stably correct the deviation angle of the clamping pulley 620. When the dial structure changes from a circular block structure to another shape, such as a cylindrical shape, the mounting base 613 is pressed. The mounting base 613 drives the vertical sleeve 612 and the annular base plate 614 to move downward. The annular base plate 614 compresses the vertical spring 615, and the vertical sleeve 612 drives the reversing gear 651 to move downward, separating it from the arc-shaped gear ring 652. At this time, the mounting base 613, vertical sleeve 612, and vertical rotating shaft 611 are in a free state on the adjusting mechanism 500, allowing the mounting base 613 to freely change its inner bias angle, thereby changing the initial alignment angle of the clamping pulley 620. This ensures that it can rotate to a position perpendicular to the lateral sectional plane of the cylindrical dial structure, ensuring that the clamping pulley 620 can fully and effectively clamp the side wall of the cylindrical dial structure. This improves the posture consistency and positional stability of the cylindrical dial structure and the joint structure during the welding process, and satisfies the clamping mechanism's ability to effectively clamp and fix instrument bodies 700 of different shapes and sizes. This achieves efficient welding of instrument bodies 700 of different shapes and sizes, improving the welding accuracy and efficiency of the instrument.

[0058] In a preferred embodiment, the reversing gear 651 and the arc-shaped gear ring 652 have the same module and pressure angle, and the transmission ratio between the reversing gear 651 and the arc-shaped gear ring 652 is consistent with the transmission ratio generated by the revolution, ensuring the accuracy of angle cancellation.

[0059] like Figures 2 to 6 As shown, in a preferred embodiment of the present invention, the driving mechanism 400 includes a drive motor 410, a transmission component 420, a double-rotating screw 430, and an axial slider 440. The drive motor 410 is fixed on the lower base 100. The double-rotating screw 430 is parallel to the axial slide rail 230 and rotatably mounted on the bottom of the upper base 200. One end of the double-rotating screw 430 is connected to the output end of the drive motor 410 through the transmission component 420. The axial slider 440 is symmetrically slidably mounted in the two axial slide rails 230, and the two axial sliders 440 are respectively threaded to both ends of the double-rotating screw 430. Both axial sliders 440 are connected to the adjusting mechanism 500.

[0060] When it is necessary to change the relative distance between the clamping pulleys 620 distributed on both sides of the same axial slide 230, the drive motor 410 drives the double-rotating screw 430 to rotate through the transmission component 420. The double-rotating screw 430 can drive the two axial sliders 440 to move closer or further apart. The two axial sliders 440 can drive one end of the adjusting mechanism 500 to slide within the arc-shaped slide 220. During the sliding of the adjusting mechanism 500 along the arc-shaped slide 220, it can drive the vertical rotating shaft 611 and the vertical sleeve 612 to rotate synchronously along the arc-shaped slide 220. The vertical sleeve 612 drives the mounting base 613, the clamping pulleys 620 and the reversing gear 651 to rotate synchronously, thereby changing the relative distance between the clamping pulleys 620 distributed on both sides of the same axial slide 230. This allows the multiple clamping pulleys 620 to adaptively clamp different specifications of dial structures, improving the adaptability and practicality of the clamping mechanism.

[0061] In a preferred embodiment, the drive motor 410 is preferably a servo motor, and the transmission component 420 is preferably a belt drive structure consisting of a synchronous belt and a synchronous pulley.

[0062] like Figures 2 to 9As shown, in a preferred embodiment of the present invention, the adjusting mechanism 500 includes a longitudinal guide post 510, a longitudinal slider 520, an adjusting guide post 530, and an arc-shaped slider 540. The longitudinal guide post 510 is perpendicular to the axial slide rail 230 and fixedly connected to the axial slider 440. The longitudinal sliders 520 are symmetrically distributed on both sides of the axial slide rail 230 and respectively slide in cooperation with the two ends of the same longitudinal guide post 510. The adjusting guide posts 530 are symmetrically distributed on both sides of the axial slide rail 230. One end of the adjustable guide post 530 is rotatably mounted on the bottom of the upper base 200. The middle part of the adjustable guide post 530 is slidably engaged with the longitudinal slider 520. The other end of the adjustable guide post 530 is connected to the bottom of the arc slider 540. The adjustable guide post 530 is inclined to the longitudinal guide post 510, and the rotation fulcrum of the adjustable guide post 530 is concentrically set with the center of the arc slide 220. The arc slider 540 is slidably mounted in the arc slide 220. A vertical rotating shaft 611 is rotatably mounted on the top of the arc slider 540.

[0063] When the two axial sliders 440 move closer or further apart, they can drive the longitudinal guide post 510 to move along the axial slide rail 230. The longitudinal guide post 510 drives the longitudinal slider 520 to move synchronously. Since one end of the adjusting guide post 530 is rotatably mounted on the upper base 200, the longitudinal slider 520 can drive the adjusting guide post 530 to slide relative to it and rotate at the bottom of the upper base 200 through axial movement. The curved slider 540 slides within the curved slide rail 220. The curved slider 540 can drive the vertical rotating shaft 611 and the vertical sleeve 612 to rotate synchronously along the curved slide rail 220. The vertical sleeve 612 drives the mounting base 613, the clamping pulley 620 and the reversing gear 651 to rotate synchronously, thereby changing the relative distance between the clamping pulleys 620 distributed on both sides of the slide rail 230 in the same axis. This allows multiple clamping pulleys 620 to adaptably clamp different specifications of dial structures, improving the adaptability and practicality of the clamping mechanism.

[0064] In a preferred embodiment, when the longitudinal slider 520 is arranged parallel to the adjusting guide post 530, it slides obliquely with the longitudinal guide post 510; conversely, when the longitudinal slider 520 is arranged parallel to the longitudinal guide post 510, it slides obliquely with the adjusting guide post 530.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision instrument welding clamping mechanism, comprising an upper base, a lower base, a three-point centering clamping module, a longitudinal movement module, and a height self-adjusting platform, wherein the upper base is fixed directly above the lower base, the three-point centering clamping module is connected to the longitudinal movement module, fixing columns are circumferentially distributed on the other side of the upper base, one end of the height self-adjusting platform is fixed to the top of the lower base, and the other end of the height self-adjusting platform extends above the upper base and supports the dial structure of the instrument body, characterized in that... Also includes: A lateral clamping module, comprising a drive mechanism, an adjustment mechanism and a lateral clamping mechanism, wherein one end of the drive mechanism is mounted on the lower base, and the other end of the drive mechanism is slidably mounted in longitudinal slides symmetrically opened at the bottom of the upper base, and the other end of the drive mechanism is connected to one end of the adjustment mechanism. The other end of the adjusting mechanism is equidistantly distributed around the center of the upper base and slidably installed in the arc-shaped slide rail distributed around the center of the upper base on the other side. The center of the arc-shaped slide rail is eccentrically set with the center of the upper base on the other side in a preset direction. A lateral clamping mechanism is installed on the adjusting mechanism. The lateral clamping mechanism consists of an installation component, a clamping pulley, a limiting component, and a reversing component. The installation component is vertically arranged and rotatably connected to the adjusting mechanism. The clamping pulley is installed on the inner side of the installation component. The limiting component is installed on the installation component and cooperates with one side of the clamping pulley. One end of the reversing component is connected to the fixed column, and the other end of the reversing component is connected to the installation component. The adjusting mechanism works in conjunction with the drive mechanism to adjust the relative distance between the clamping pulleys distributed on both sides of the same axial slide. The reversing component works in conjunction with the drive mechanism and the adjusting mechanism to correct the deviation angle generated when the clamping pulleys revolve. The limiting component works in conjunction with the height self-adjusting platform to adaptively adjust the vertical height of the dial structure.

2. The high-precision instrument welding clamping mechanism according to claim 1, characterized in that, The mounting assembly includes a vertical rotating shaft, a vertical sleeve, a mounting base, an annular base plate, and a vertical spring. The vertical rotating shaft is vertically positioned and rotatably mounted on the adjusting mechanism. The vertical sleeve is slidably mounted on the vertical rotating shaft. A mounting clamp is fixed to the top of the vertical sleeve, and an annular base plate is fixed to the bottom of the vertical sleeve. A vertical spring is installed between the annular base plate and the adjusting mechanism. The outer wall of the vertical sleeve is concentrically connected to one end of the reversing assembly. A clamping pulley is rotatably mounted on the inner side of the mounting base, and a limiting assembly that cooperates with the clamping pulley is mounted on the outer side of the mounting base.

3. The high-precision instrument welding clamping mechanism according to claim 2, characterized in that, The limiting assembly includes a horizontal sliding column, a U-shaped limiting plate, a strip friction pad, a limiting spring, a limiting stud, and a limiting sleeve. The horizontal sliding column is horizontally slidably mounted on the outside of the mounting base. A limiting spring is installed between one end of the horizontal sliding column and the mounting base. The other end of the horizontal sliding column extends to the inside of the mounting base and is vertically fixedly connected to the U-shaped limiting plate. The U-shaped limiting plate is parallel to the clamping pulley. A strip friction pad that rubs against the outer surface of the clamping pulley is fixed to the inside of the U-shaped limiting plate. The limiting sleeve is horizontally fixed on the outside of the mounting base. A limiting stud is threaded onto the limiting sleeve. One end of the limiting stud extends to the inside of the mounting base and contacts the outer surface of the U-shaped limiting plate.

4. The high-precision instrument welding clamping mechanism according to claim 3, characterized in that, The clamping pulley has an annular groove in the middle, and an annular friction pad protruding from the outer surface of the clamping pulley is installed in the annular groove. One side of the annular friction pad is in frictional contact with the side wall of the dial structure, and the other side of the annular friction pad is in frictional engagement with the strip friction pad.

5. The high-precision instrument welding clamping mechanism according to claim 2, characterized in that, The reversing assembly includes a reversing gear and an arc-shaped gear ring. One side of the arc-shaped gear ring is fixed to a fixed post, and the arc-shaped gear ring is concentric with the arc-shaped slide. The reversing gear is fixed to the outer wall of the vertical sleeve and meshes with the arc-shaped gear ring.

6. The high-precision instrument welding clamping mechanism according to claim 5, characterized in that, The reversing gear and the arc-shaped gear ring have the same module and pressure angle, and the transmission ratio between the reversing gear and the arc-shaped gear ring is the same as the transmission ratio generated by the revolution.

7. The high-precision instrument welding clamping mechanism according to claim 1, characterized in that, The drive mechanism includes a drive motor, a transmission component, a double-rotating screw, and an axial slider. The drive motor is fixed on the lower base. The double-rotating screw is parallel to the axial slide rail and rotatably mounted on the bottom of the upper base. One end of the double-rotating screw is connected to the output end of the drive motor through the transmission component. The axial slider is symmetrically slidably mounted in two axial slide rails, and the two axial sliders are respectively threaded to both ends of the double-rotating screw. Both axial sliders are connected to the adjustment mechanism.

8. The high-precision instrument welding clamping mechanism according to claim 7, characterized in that, The adjusting mechanism includes a longitudinal guide post, a longitudinal slider, an adjusting guide post, and an arc-shaped slider. The longitudinal guide post is perpendicular to the axial slide rail and is fixedly connected to the axial slider. The longitudinal sliders are symmetrically distributed on both sides of the axial slide rail and are slidably engaged with the two ends of the same longitudinal guide post. The adjusting guide posts are symmetrically distributed on both sides of the axial slide rail. One end of the adjusting guide post is rotatably mounted on the bottom of the upper base. The middle part of the adjusting guide post is slidably engaged with the longitudinal slider. The other end of the adjusting guide post is connected to the bottom of the arc-shaped slider. The adjusting guide post is inclined to the longitudinal guide post, and the rotation fulcrum of the adjusting guide post is concentric with the center of the arc-shaped slide rail. The arc-shaped slider is slidably mounted in the arc-shaped slide rail, and a vertical rotating shaft is rotatably mounted on the top of the arc-shaped slider.

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