A polishing device for metal seal processing and a polishing method

Abstract

The application discloses a polishing device and a polishing method for metal sealing piece processing, and relates to the technical field of metal sealing piece processing.The polishing device comprises a platform, a fixed rotating mechanism, a base plate, a sandpaper roll and a transmission mechanism.The fixed rotating mechanism is arranged on the platform and is used for clamping and driving a metal O-shaped ring to rotate with the center of the metal O-shaped ring as a base point.The base plate is arranged on one side of the platform.The sandpaper roll is installed on the base plate.The transmission mechanism is installed on the base plate.The sandpaper strip can be wound on the metal O-shaped ring, and the radial direction of the metal O-shaped ring can be wrapped by the sandpaper strip.When the fixed rotating mechanism drives the metal O-shaped ring to rotate with the center of the metal O-shaped ring as a base point, the entire surface of the metal O-shaped ring can be polished by the sandpaper strip.The polishing device can polish the entire surface of the metal O-shaped ring at one time, and burrs can be treated at the same time, so that the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of metal seal processing technology, and specifically to a polishing apparatus and polishing method for metal seal processing. Background Technology

[0002] Metal seals are essential sealing elements widely used in industrial fields. They are typically made of metal and are used to ensure sealing performance and durability under high temperature, high pressure, or other extreme environmental conditions. Metal seals achieve an effective seal through close contact between the metal material and the surface being sealed. Their sealing principle primarily involves surface flatness, elastic deformation, and preload.

[0003] Metal seals include metal O-rings, which are seals with a circular cross-section, often made of stainless steel or other high-temperature resistant alloys. They are primarily used to provide reliable static seals and are suitable for sealing requirements in high-temperature and high-pressure environments.

[0004] After the existing metal O-rings are manufactured, their surfaces need to be polished. Since metal O-rings have two sides, an outer ring surface, and an inner ring surface, polishing them requires manual polishing of each of these surfaces. This reduces efficiency, and the polishing quality cannot be guaranteed because each worker's technique is different. In addition, when metal O-rings are machined on a lathe, burrs may be present at the edges and corners due to various reasons, which also require subsequent processing, further affecting efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a polishing device and polishing method for processing metal seals, which solves the problem that existing metal O-rings and other metal seals require manual polishing, thus affecting efficiency.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions, the present invention comprising:

[0007] platform;

[0008] A fixed rotation mechanism is provided on the platform. The fixed rotation mechanism is used to clamp the metal O-ring and drive the metal O-ring to rotate with its center as the base point.

[0009] A substrate, wherein the substrate is disposed on one side of the platform;

[0010] A sandpaper roll, the sandpaper roll being mounted on a substrate;

[0011] A transmission mechanism, mounted on a substrate, is used to transmit sandpaper strips from the substrate.

[0012] A cutting mechanism, mounted on a substrate, is used to cut sandpaper strips from the substrate.

[0013] A winding mechanism is installed on one side of the substrate. It is used to wind a strip of sandpaper from the substrate onto a metal O-ring once, and cooperates with a transmission mechanism to pull the sandpaper strip to polish the metal O-ring.

[0014] Preferably, the fixed rotation mechanism includes two symmetrically arranged clamping assemblies. Each clamping assembly includes an elongated through hole on the platform, and two sliders are slidably disposed within the elongated through hole. A bidirectional lead screw and a guide shaft are rotatably mounted on the lower side of the platform via a mounting plate. Both sliders are threadedly connected to the bidirectional lead screw, and both sliders are slidably connected to the guide shaft. A first motor for driving the bidirectional lead screw to rotate is fixed on one of the mounting plates. A first transmission roller is rotatably mounted on the upper side of both sliders, and a second motor for driving the corresponding first transmission roller to rotate is mounted on the lower side of at least one slider.

[0015] Preferably, the transmission mechanism includes two second transmission rollers rotatably mounted on the substrate via first rotating shafts, each of the two first rotating shafts being equipped with a first gear, and the two first gears being meshed together. A third motor is fixed on the substrate via a mounting base, and the third motor is connected to one of the first rotating shafts.

[0016] Preferably, the cutting mechanism includes two clamping plates fixed to the substrate, arranged vertically, and a transmission channel is formed between the two clamping plates. The sandpaper strip of the sandpaper roll passes through the transmission channel. Corresponding slits are opened on the two clamping plates. The substrate is fixed with a first electric push rod by a mounting base. A blade is installed on the telescopic end of the first electric push rod, and the blade corresponds to the slit.

[0017] Preferably, the winding mechanism includes a first bottom spiral arc-shaped piece and a second bottom spiral arc-shaped piece fixed to one side of the substrate by a connecting plate, and a second electric push rod fixed to one side of the substrate by a mounting bracket. The telescopic end of the second electric push rod is fixed with a connecting bracket. The connecting bracket is fixed with a first top spiral arc-shaped piece and a second top spiral arc-shaped piece. When the first bottom spiral arc-shaped piece, the first top spiral arc-shaped piece, the second bottom spiral arc-shaped piece, and the second top spiral arc-shaped piece are sequentially connected and closed, a spiral channel is formed. The sandpaper strip passing through the cutting mechanism passes through the spiral channel. A pulling member installed on the connecting bracket is provided at the tail end of the spiral channel. The pulling member is used to pull the sandpaper strip. An arc-shaped guide channel is fixed on the connecting bracket, and the lower end of the arc-shaped guide channel corresponds to the pulling member.

[0018] Preferably, the cross-section of the spiral channel includes a U-shaped portion and shielding portions fixed to both ends of the U-shaped portion, and the shielding portions are made of soft rubber.

[0019] Preferably, the pulling member includes two third transmission rollers rotatably mounted on the connecting frame via second rotating shafts, each of the two second rotating shafts is fixed with a second gear, the two second gears are meshed together, and a fourth motor is fixed on the connecting frame via a mounting base, and the output end of the fourth motor is connected to one of the second rotating shafts.

[0020] Preferably, the sandpaper strips on the sandpaper roll have multiple segments, and each sandpaper strip includes a coarse sand section at the front and a fine sand section at the rear.

[0021] Preferably, the substrate is rotatably mounted with a guide roller, and the guide roller is located between the cutting mechanism and the winding mechanism.

[0022] The present invention also proposes a polishing method for the polishing apparatus for processing metal seals, characterized by comprising the following steps:

[0023] Step 1: Fix the metal O-ring: Retract the telescopic end of the second electric push rod to drive the first top spiral arc plate and the second top spiral arc plate to move upward. By running the first motor, drive the two first transmission rollers of the clamping assembly to move away from each other. Then place the metal O-ring on the platform, with the corresponding part of the metal O-ring located between the two first transmission rollers of the two clamping assemblies and on the upper side of the first bottom spiral arc plate and the second bottom spiral arc plate. Extend the telescopic end of the second electric push rod, and the first bottom spiral arc plate, the first top spiral arc plate, the second bottom spiral arc plate, and the second top spiral arc plate are sequentially connected and closed to form a spiral channel. Run the first motor to clamp the metal O-ring with the two first transmission rollers.

[0024] Step 2, Winding the sandpaper strip: The sandpaper strip on the sandpaper roll is conveyed by the conveying mechanism. The sandpaper strip passes through the cutting mechanism and the spiral channel and comes out from the pulling part. The conveying mechanism runs in reverse, so that the sandpaper strip is pulled in the opposite direction to tighten it, get it out of the constraint of the spiral channel and wind it around the metal O-ring.

[0025] Step 3, Polishing: The metal O-ring is driven to rotate around its center by a fixed rotating mechanism. At the same time, the sandpaper strip is driven to rub against the surface of the metal O-ring by the operation of the transmission mechanism and the pulling component to achieve polishing.

[0026] Step 4: Cut the sandpaper strip: After polishing is complete, stop driving the metal O-ring to rotate, cut the sandpaper strip through the cutting mechanism, and discharge the used sandpaper strip through the pull part;

[0027] Step 5, Unloading: Retract the telescopic end of the second electric push rod to drive the first and second top spiral arc plates to move upward. By running the first motor, the two first transmission rollers of the clamping assembly are driven to move away from each other, and the metal O-ring is removed.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. This invention can wrap sandpaper strips around a metal O-ring, and the sandpaper strips can wrap the radial direction of the metal O-ring. When the fixed rotating mechanism drives the metal O-ring to rotate with its center as the base point, the sandpaper strips can polish the entire surface of the metal O-ring. This method can not only polish the entire surface of the metal O-ring at one time, but also remove burrs, thus improving production efficiency.

[0030] 2. The present invention, through the setting of the winding mechanism, can wind sandpaper strips onto the metal O-ring, which has a novel structure and speeds up the work efficiency.

[0031] 3. The fixed-rotation mechanism proposed in this invention can both clamp the metal O-ring and drive it to rotate around its center. The novel structure makes the operation more convenient. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 for Figure 1 A three-dimensional structural diagram of the fixed rotating mechanism in the diagram;

[0034] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the middle substrate;

[0035] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0036] Figure 5 for Figure 1 A first-view structural diagram of the winding mechanism;

[0037] Figure 6 for Figure 1 Second-view structural schematic diagram of the winding mechanism;

[0038] Figure 7 This is a top view of the structure of the present invention.

[0039] The numbers in the diagram represent:

[0040] 1-Platform; 2-Fixed Rotation Mechanism; 21-Elongated Through Hole; 22-Slider; 23-First Transmission Roller; 24-Bidirectional Lead Screw; 25-Guide Shaft; 26-Second Motor; 27-First Motor; 3-Base Plate; 4-Sandpaper Roll; 5-Transmission Mechanism; 51-Second Transmission Roller; 52-First Gear; 53-Third Motor; 6-Cutting Mechanism; 61-Clamping Plate; 62-Slit; 63-First Electric Push Rod; 64-Blade; 7-Guide Roller; 8-Winding Mechanism; 81-Spiral Channel; 811-First Bottom Spiral Arc Plate; 812-First Top Spiral Arc Plate; 813-Second Bottom Spiral Arc Plate; 814-Second Top Spiral Arc Plate; 82-Pull Component; 821-Third Transmission Roller; 822-Second Gear; 823-Fourth Motor; 83-Arc-shaped Guide Channel; 84-Connecting Frame; 85-Second Electric Push Rod; 100-Metal O-ring. Detailed Implementation

[0041] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0042] This embodiment provides a technical solution: a polishing device for processing metal seals, such as... Figures 1 to 7 As shown, the system includes a platform 1, a fixed rotating mechanism 2, a base plate 3, a sandpaper roll 4, a transmission mechanism 5, a cutting mechanism 6, and a winding mechanism 8. The fixed rotating mechanism 2 is mounted on the platform 1, and the base plate 3 is mounted on one side of the platform 1. The sandpaper roll 4, transmission mechanism 5, winding mechanism 8, and cutting mechanism 6 are all mounted on the base plate 3. The sandpaper roll 4 is mounted on one side of the base plate 3 by a mounting roller and can be disassembled for easy replacement. The sandpaper strips on the sandpaper roll 4 pass through the transmission mechanism 5 and the cutting mechanism 6 in sequence and finally reach the winding mechanism 8. During use, the transmission mechanism 5 is used to transmit the sandpaper strips on the sandpaper roll 4 so that the sandpaper strips on the sandpaper roll 4 gradually loosen. The cutting mechanism 6 is used to cut off the used section of the sandpaper strip so that the next polishing operation can be carried out.

[0043] The sandpaper strip on the sandpaper roll 4 has multiple segments, and each segment includes a coarse sandpaper section at the front and a fine sandpaper section at the back. The cutting mechanism 6 precisely cuts each segment of sandpaper strip. When in use, the coarse sandpaper section is first used to coarsely polish the metal O-ring 100, and then the fine sandpaper section is used to finely polish the metal O-ring 100 to ensure the polishing effect.

[0044] The fixed rotation mechanism 2 is used to clamp the metal O-ring 100 and drive the metal O-ring 100 to rotate with its center as the base point. The fixed rotation mechanism 2 includes two symmetrically arranged clamping components, which are located on a straight line. The clamping components include an elongated through hole 21 opened on the platform 1. Two sliders 22 are slidably arranged in the elongated through hole 21, and the sliding direction of the sliders 22 is located on the center line of the metal O-ring 100. A bidirectional lead screw 24 and a guide shaft 25 are rotatably mounted on the lower side of the platform 1 through a mounting plate. Both sliders 22 are threadedly connected to the bidirectional lead screw 24, and both sliders 22 are slidably connected to the guide shaft 25. A first motor 27 that drives the bidirectional lead screw 24 to rotate is fixed on one of the mounting plates. A first transmission roller 23 is rotatably mounted on the upper side of both sliders 22. A second motor 26 that drives the corresponding first transmission roller 23 to rotate is mounted on the lower side of at least one slider 22.

[0045] The forward-running first motor 27 drives the bidirectional lead screw 24 to rotate, thereby moving the two sliders 22 away from each other and increasing the gap between them. This allows the metal O-ring 100 to be placed on the platform 1, ensuring that both sides of the metal O-ring 100 are located in the gaps between the two first transmission rollers 23 in the two clamping assemblies (e.g., Figure 1 As shown), the first motor 27 of the two clamping components then runs in opposite directions simultaneously, and the two sliders 22 in the clamping components move closer to each other until the two first transmission rollers 23 clamp the metal O-ring 100. At this time, due to the restriction of the two sides of the metal O-ring 100 by the two clamping components, the metal O-ring 100 is fixed. Then the second motor 26 runs, which can drive the metal O-ring 100 to rotate with its center as the base point.

[0046] To reduce the friction between the metal O-ring 100 and the platform 1, a roller can be installed on the platform 1 to support the metal O-ring 100 and reduce the friction between them.

[0047] The transmission mechanism 5 includes two second transmission rollers 51 rotatably mounted on the substrate 3 via a first rotating shaft. The two second transmission rollers 51 are arranged symmetrically up and down. Each of the two first rotating shafts is equipped with a first gear 52, and the two first gears 52 are meshed together. A third motor 53 is fixed on the substrate 3 via a mounting base, and the third motor 53 is connected to one of the first rotating shafts.

[0048] When the sandpaper strip of the sandpaper roll 4 passes through the gap between the two second drive rollers 51, the two second drive rollers 51 will clamp and fix the sandpaper. When the third motor 53 is running, the two second drive rollers 51 can be driven to rotate in opposite directions through the cooperation of the two first gears 52, so as to realize the transmission of the sandpaper strip.

[0049] The cutting mechanism 6 includes two clamping plates 61 fixed to the base plate 3, which are arranged vertically and vertically, and a transmission channel is formed between the two clamping plates 61. The sandpaper strip after passing through the transmission mechanism 5 passes through the transmission channel. Corresponding slits 62 are opened on the two clamping plates 61. The base plate 3 is fixed with a first electric push rod 63 by a mounting base. A blade 64 is installed at the telescopic end of the first electric push rod 63, and the blade 64 corresponds to the slit 62. The width of the slit 62 is adapted to the width of the blade 64.

[0050] When it is necessary to cut the sandpaper strip, the telescopic end of the first electric push rod 63 is extended so that the blade 64 passes through the slit 62, thereby cutting the sandpaper strip.

[0051] To ensure smoother transmission of sandpaper strips, a guide roller 7 is rotatably mounted on the base plate 3. The guide roller 7 is located between the cutting mechanism 6 and the winding mechanism 8. The sandpaper strips passing through the cutting mechanism 6 will be guided by the guide roller 7 to reduce wear.

[0052] The winding mechanism 8 is mounted on one side of the substrate 3. It is used to wind the sandpaper strips from the substrate 3 onto the metal O-ring 100 once, and cooperates with the transmission mechanism 5 to drive the sandpaper strips to pull, thereby polishing the metal O-ring 100. The winding mechanism 8 includes a first bottom spiral arc-shaped piece 811 and a second bottom spiral arc-shaped piece 813 fixed to one side of the substrate 3 by a connecting plate, and a second electric push rod 85 fixed to one side of the substrate 3 by a mounting bracket. The first bottom spiral arc-shaped piece 811 and the sandpaper strip transmitted by the cutting mechanism 6 are on the same straight line to ensure that the sandpaper strip can smoothly transition into the first bottom spiral arc-shaped piece 811. The telescopic end of the second electric push rod 85 is fixed with a connecting bracket 84, on which a first top spiral arc-shaped piece 812 and a second top spiral arc-shaped piece 813 are fixed. When the first bottom spiral arc plate 814, the first top spiral arc plate 811, the first bottom spiral arc plate 812, the second bottom spiral arc plate 813, and the second top spiral arc plate 814 are sequentially connected and closed, a spiral channel 81 is formed. The sandpaper strip passed through the cutting mechanism 6 passes through the spiral channel 81. A puller 82 installed on the connecting frame 84 is provided at the tail end of the spiral channel 81. The puller 82 is used to pull the sandpaper strip. An arc-shaped guide channel 83 is fixed on the connecting frame 84, and the lower end of the arc-shaped guide channel 83 corresponds to the puller 82.

[0053] When the second electric push rod 85 is operated, the first top spiral arc plate 812 and the second top spiral arc plate 814 can be vertically displaced to determine whether the first top spiral arc plate 812 and the second top spiral arc plate 814 are aligned with the first bottom spiral arc plate 811 and the second bottom spiral arc plate 813. After the first top spiral arc plate 812 and the second top spiral arc plate 814 are moved upward by the second electric push rod 85, the metal O-ring 100 can be placed on the platform 1, and at this time, part of the metal O-ring 100 is also located on the first bottom plate 1. When the first top spiral arc plate 812 and the second top spiral arc plate 814 are moved downwards, the spiral channel 81 surrounds the corresponding part of the metal O-ring 100. The sandpaper strip driven by the transmission mechanism 5 will wrap around the metal O-ring 100 along the spiral channel 81, thus binding the metal O-ring 100. Then, the sandpaper strip is clamped and fixed by the pulling member 82, and the transmission mechanism 5 transmits the sandpaper strip in the opposite direction to tighten the sandpaper strip in the spiral channel 81.

[0054] The cross-section of the spiral channel 81 includes a U-shaped part and a blocking part fixed at both ends of the U-shaped part. The blocking part is made of soft rubber. The soft rubber only occupies the edge part of the width of the sandpaper strip. When the sandpaper strip is pulled and tightened, the sandpaper strip will break through the constraint of the soft rubber and tightly wrap around the metal O-ring 100.

[0055] The pulling member 82 includes two third transmission rollers 821 rotatably mounted on the connecting frame 84 via a second rotating shaft. A second gear 822 is fixed on each of the two second rotating shafts and the two second gears 822 are meshed together. A fourth motor 823 is fixed on the connecting frame 84 via a mounting base, and the output end of the fourth motor 823 is connected to one of the second rotating shafts.

[0056] After the sandpaper strip passes through the spiral channel 81, it passes through the gap between the two third drive rollers 821. The two third drive rollers 821 will clamp the sandpaper strip, and the fourth motor 823 can then be used to transport the sandpaper strip.

[0057] This embodiment also proposes a polishing method for a polishing apparatus for processing metal seals as described above, including the following steps:

[0058] Step 1: Fix the metal O-ring 100: Retract the telescopic end of the second electric push rod 85 to drive the first top spiral arc plate 812 and the second top spiral arc plate 814 to move upward. By running the first motor 27, the two first transmission rollers 23 of the clamping assembly are driven to move away from each other. Then, the metal O-ring 100 is placed on the platform 1, and the corresponding part of the metal O-ring 100 is located between the two first transmission rollers 23 of the two clamping assemblies and on the upper side of the first bottom spiral arc plate 811 and the second bottom spiral arc plate 813. Extend the telescopic end of the second electric push rod 85. The first bottom spiral arc plate 811, the first top spiral arc plate 812, the second bottom spiral arc plate 813 and the second top spiral arc plate 814 are connected and closed in sequence to form a spiral channel 81. Run the first motor 27 to clamp the metal O-ring 100 with the two first transmission rollers 23.

[0059] Step 2, Winding sandpaper strips: The sandpaper strips on the sandpaper roll 4 are conveyed by the conveying mechanism 5. The sandpaper strips pass through the cutting mechanism 6 and the spiral channel 81 and exit from the pulling member 82. That is, the sandpaper strips are clamped and fixed by the pulling member 82 of the winding mechanism 8. The conveying mechanism 5 is reversed so that the sandpaper strips are pulled in the opposite direction to tighten them, break free from the constraint of the spiral channel 81, and wind around the metal O-ring 100.

[0060] Step 3, Polishing: The metal O-ring 100 is driven to rotate with its center as the base point by the fixed rotating mechanism 2. At the same time, the operation of the transmission mechanism 5 and the pulling part 82 drives the sandpaper strip to rub against the surface of the metal O-ring 100 to achieve polishing.

[0061] Specifically, two methods can be adopted. The first method is to drive the sandpaper strip to one side of the pull member 82 through the transmission mechanism 5. During this process, the metal O-ring 100 can be polished. This method has a better effect because the sandpaper strip only rubs against the metal O-ring 100 once. The second method is to drive the sandpaper strip to reciprocate through the cooperation of the transmission mechanism 5 and the pull member 82 (first to one side of the pull member 82, and then to one side of the transmission mechanism 5, thus completing one cycle). In this method, the sandpaper strip can achieve multiple rubbing, which saves sandpaper strips and reduces costs.

[0062] Step 4: Cutting the sandpaper strip: After polishing is completed, stop driving the metal O-ring 100 to rotate, cut the sandpaper strip by the cutting mechanism 6, and discharge the used sandpaper strip by the puller 82.

[0063] Step 5, Unloading: Retract the telescopic end of the second electric push rod 85 to drive the first top spiral arc plate 812 and the second top spiral arc plate 814 to move upward. By running the first motor 27, the two first transmission rollers 23 of the clamping assembly are driven to move away from each other, and the metal O-ring 100 is removed.

[0064] The above are merely preferred embodiments of the present invention and are illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A polishing apparatus for processing metal seals, characterized in that, include: platform; A fixed rotation mechanism is provided on the platform. The fixed rotation mechanism is used to clamp the metal O-ring and drive the metal O-ring to rotate with its center as the base point. A substrate, wherein the substrate is disposed on one side of the platform; A sandpaper roll, the sandpaper roll being mounted on a substrate; A transmission mechanism, mounted on a substrate, is used to transmit sandpaper strips from the substrate. A cutting mechanism, mounted on a substrate, is used to cut sandpaper strips from the substrate. A winding mechanism is installed on one side of the substrate. It is used to wind a strip of sandpaper from the substrate onto a metal O-ring once, and cooperates with a transmission mechanism to pull the sandpaper strip to polish the metal O-ring. The fixed rotation mechanism includes two symmetrically arranged clamping assemblies. Each clamping assembly includes an elongated through hole on the platform. Two sliders are slidably disposed within the elongated through hole. A bidirectional lead screw and a guide shaft are rotatably mounted on the lower side of the platform via a mounting plate. Both sliders are threadedly connected to the bidirectional lead screw and slidably connected to the guide shaft. A first motor for driving the bidirectional lead screw to rotate is fixed on one of the mounting plates. A first transmission roller is rotatably mounted on the upper side of both sliders. A second motor for driving the corresponding first transmission roller to rotate is mounted on the lower side of at least one slider. The cutting mechanism includes two clamping plates fixed to the base plate, which are arranged vertically and vertically, and a transmission channel is formed between the two clamping plates. The sandpaper strip of the sandpaper roll passes through the transmission channel. Corresponding slits are opened on the two clamping plates. The base plate is fixed with a first electric push rod by a mounting seat. A blade is installed on the telescopic end of the first electric push rod, and the blade corresponds to the slit. The winding mechanism includes a first bottom spiral arc-shaped piece and a second bottom spiral arc-shaped piece fixed to one side of the substrate by a connecting plate, and a second electric push rod fixed to one side of the substrate by a mounting bracket. The telescopic end of the second electric push rod is fixed with a connecting bracket. The connecting bracket is fixed with a first top spiral arc-shaped piece and a second top spiral arc-shaped piece. When the first bottom spiral arc-shaped piece, the first top spiral arc-shaped piece, the second bottom spiral arc-shaped piece, and the second top spiral arc-shaped piece are sequentially connected and closed, a spiral channel is formed. The sandpaper strip passing through the cutting mechanism passes through the spiral channel. A pulling member installed on the connecting bracket is provided at the tail end of the spiral channel. The pulling member is used to pull the sandpaper strip. An arc-shaped guide channel is fixed on the connecting bracket, and the lower end of the arc-shaped guide channel corresponds to the pulling member.

2. The polishing apparatus for processing metal seals as described in claim 1, characterized in that, The transmission mechanism includes two second transmission rollers rotatably mounted on the substrate via a first rotating shaft. Each of the two first rotating shafts is equipped with a first gear, and the two first gears are meshed together. A third motor is fixed on the substrate via a mounting base, and the third motor is connected to one of the first rotating shafts.

3. The polishing apparatus for processing metal seals as described in claim 1, characterized in that, The cross-section of the spiral channel includes a U-shaped portion and shielding portions fixed to both ends of the U-shaped portion, and the shielding portions are made of soft rubber.

4. The polishing apparatus for processing metal seals as described in claim 1, characterized in that, The pulling component includes two third transmission rollers rotatably mounted on the connecting frame via second rotating shafts. Each of the two second rotating shafts is fixed with a second gear, and the two second gears are meshed together. A fourth motor is fixed on the connecting frame via a mounting base, and the output end of the fourth motor is connected to one of the second rotating shafts.

5. The polishing apparatus for processing metal seals as described in claim 1, characterized in that, The sandpaper roll has multiple sandpaper strips, and each sandpaper strip includes a coarse sandpaper section at the front and a fine sandpaper section at the back.

6. The polishing apparatus for processing metal seals as described in claim 1, characterized in that, The substrate is rotatably mounted with a guide roller, and the guide roller is located between the cutting mechanism and the winding mechanism.

7. A polishing method for a polishing apparatus for processing metal seals as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Fix the metal O-ring: Retract the telescopic end of the second electric push rod to drive the first top spiral arc plate and the second top spiral arc plate to move upward. By running the first motor, drive the two first transmission rollers of the clamping assembly to move away from each other. Then place the metal O-ring on the platform, with the corresponding part of the metal O-ring located between the two first transmission rollers of the two clamping assemblies and on the upper side of the first bottom spiral arc plate and the second bottom spiral arc plate. Extend the telescopic end of the second electric push rod, and the first bottom spiral arc plate, the first top spiral arc plate, the second bottom spiral arc plate, and the second top spiral arc plate are sequentially connected and closed to form a spiral channel. Run the first motor to clamp the metal O-ring with the two first transmission rollers. Step 2, Winding the sandpaper strip: The sandpaper strip on the sandpaper roll is conveyed by the conveying mechanism. The sandpaper strip passes through the cutting mechanism and the spiral channel and comes out from the pulling part. The conveying mechanism runs in reverse, so that the sandpaper strip is pulled in the opposite direction to tighten it, get it out of the constraint of the spiral channel and wind it around the metal O-ring. Step 3, Polishing: The metal O-ring is driven to rotate around its center by a fixed rotating mechanism. At the same time, the sandpaper strip is driven to rub against the surface of the metal O-ring by the operation of the transmission mechanism and the pulling component to achieve polishing. Step 4: Cut the sandpaper strip: After polishing is complete, stop driving the metal O-ring to rotate, cut the sandpaper strip through the cutting mechanism, and discharge the used sandpaper strip through the pull part; Step 5, Unloading: Retract the telescopic end of the second electric push rod to drive the first and second top spiral arc plates to move upward. By running the first motor, the two first transmission rollers of the clamping assembly are driven to move away from each other, and the metal O-ring is removed.

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