Polishing device and polishing method for metal sealing element machining

Abstract

The invention discloses a polishing device and a polishing method for metal sealing element machining, and relates to the technical field of metal sealing element machining. The fixed rotating mechanism is arranged on the platform, and the fixed rotating mechanism is used for clamping the metal O-shaped ring and driving the metal O-shaped ring to rotate by taking the circle center of the metal O-shaped ring as a base point; the base plate is arranged on one side of the platform; the abrasive paper roll is mounted on the base plate; and the transmission mechanism is mounted on the base plate. The abrasive paper strip can be wound on the metal O-shaped ring, the abrasive paper strip can wrap the metal O-shaped ring in the radial direction, and when the fixed rotating mechanism drives the metal O-shaped ring to rotate with the circle center of the metal O-shaped ring as the base point, all the surfaces of the metal O-shaped ring can be polished through the abrasive paper strip; by means of the mode, the whole surface of the metal O-shaped ring can be polished at a time, burrs can be treated together, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal seal processing, and in particular to a polishing device and a polishing method for metal seal processing. Background Art

[0002] Metal seals are an important sealing component widely used in the industrial field. They are usually made of metal materials and are used to ensure sealing and durability under high temperature, high pressure or other extreme environmental conditions. Metal seals form an effective seal through the close contact between the metal material and the sealed surface. Its sealing principle mainly includes surface flatness, elastic deformation and preload force.

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

[0004] After the existing metal O-ring metal seals are processed, their surfaces need to be polished. Since the metal O-ring has two side surfaces, an outer ring surface and an inner ring surface, it is necessary to manually polish the multiple surfaces separately when polishing it, which reduces efficiency. In addition, the manual polishing operation is different for each worker, so the polishing quality cannot be guaranteed. In addition, when the metal O-ring is formed by lathe machining, it may have burrs on its corners due to various reasons, and it also needs to be processed by subsequent processes, which further affects efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a polishing device and a polishing method for metal seal processing, which solves the problem that existing metal O-ring-type metal seals need to be polished manually, which affects the efficiency.

[0006] The present invention solves the above technical problems through the following technical solutions, which include:

[0007] platform;

[0008] A fixed rotating mechanism, which is disposed on the platform and is used to clamp the metal O-ring and drive the metal O-ring to rotate with its center as a base point;

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

[0010] A sandpaper roll, wherein the sandpaper roll is mounted on the base plate;

[0011] A transmission mechanism, the transmission mechanism is installed on the substrate and is used to transmit the sandpaper strips on the substrate;

[0012] A cutting mechanism, which is mounted on the substrate and is used to cut the sandpaper strips of the substrate;

[0013] The winding mechanism is installed on one side of the substrate and is used to wind the sandpaper strip of the substrate onto the metal O-ring for one circle, and cooperate with the transmission mechanism to drive the sandpaper strip to pull, so as to achieve polishing of the metal O-ring.

[0014] Preferably, the fixed rotating mechanism includes two symmetrically arranged clamping components, the clamping component includes an elongated through hole opened on the platform, two sliders are slidably arranged in the elongated through hole, a bidirectional screw is rotatably installed on the lower side of the platform through a mounting plate and a guide shaft is fixed, both of the two sliders are threadedly connected to the bidirectional screw, and both of the two sliders are slidably connected to the guide shaft, a first motor driving the bidirectional screw to rotate is fixed on one of the mounting plates, a first transmission roller is rotatably installed on the upper sides of the two sliders, and a second motor driving the corresponding first transmission roller to rotate is installed on the lower side of at least one of the sliders.

[0015] Preferably, the transmission mechanism includes two second transmission rollers rotatably mounted on the base plate via a first rotating shaft, both of the first rotating shafts are mounted with first gears, and the two first gears are meshingly connected, a third motor is fixed on the base plate via a mounting seat, and the third motor is connected to one of the first rotating shafts.

[0016] Preferably, the cutting mechanism includes two upper and lower clamping plates fixed to the base plate, and a transmission channel is formed between the two clamping plates. The sandpaper strips of the sandpaper roll pass through the transmission channel. Corresponding slits are opened on the two clamping plates. The base plate is fixed with a first electric push rod through a mounting seat. A blade is installed at 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 piece and a second bottom spiral arc piece fixed to one side of the base plate through a connecting plate, and a second electric push rod fixed to one side of the base plate through a mounting frame, the telescopic end of the second electric push rod is fixed with a connecting frame, and the connecting frame is fixed with a first top spiral arc piece and a second top spiral arc piece, and the first bottom spiral arc piece, the first top spiral arc piece, the second bottom spiral arc piece and the second top spiral arc piece are sequentially connected and closed to form a spiral channel, and the sandpaper strip passing through the cutting mechanism penetrates into the spiral channel, and a pulling piece installed on the connecting frame is provided at the tail end of the spiral channel, and the pulling piece is used to pull the sandpaper strip, and an arc guide channel is fixed on the connecting frame, and the lower end of the arc guide channel corresponds to the pulling piece.

[0018] Preferably, the cross section of the spiral channel includes a U-shaped portion and shielding portions fixed at 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 a second rotating shaft, a second gear is fixed on both of the second rotating shafts, the two second gears are meshingly connected, a fourth motor is fixed on the connecting frame via a mounting seat, and the output end of the fourth motor is connected to one of the second rotating shafts.

[0020] Preferably, the sandpaper strip on the sandpaper roll has multiple sections, and each section of the sandpaper strip includes a coarse sand portion located at the front section and a fine sand portion located at the rear section.

[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 provides a polishing method of the polishing device for metal seal processing, characterized in that it comprises the following steps:

[0023] Step 1, fix the metal O-ring: contract the telescopic end of the second electric push rod, drive the first top spiral arc piece and the second top spiral arc piece to move upward, and drive the two first transmission rollers of the clamping assembly to move away from each other by running the first motor, then place the metal O-ring on the platform, and the corresponding part of the metal O-ring is located between the two first transmission rollers of the two clamping assemblies and on the upper side of the first bottom spiral arc piece and the second bottom spiral arc piece, extend the telescopic end of the second electric push rod, and the first bottom spiral arc piece, the first top spiral arc piece, the second bottom spiral arc piece and the second top spiral arc piece are connected and closed in sequence to form a spiral channel, and run the first motor to make the two first transmission rollers clamp the metal O-ring;

[0024] Step 2, winding the sandpaper strip: The sandpaper strip on the sandpaper roll is transmitted through the transmission mechanism, the sandpaper strip passes through the cutting mechanism, the spiral channel and out of the pulling member, and the transmission mechanism is reversed to pull the sandpaper strip in the reverse direction, so that the sandpaper strip is tightened, freed from the constraint of the spiral channel and wound on the metal O-ring;

[0025] Step 3, polishing: the metal O-ring is driven to rotate with its center as the base point through the fixed rotating mechanism, and at the same time, the sandpaper strip is driven to rub against the surface of the metal O-ring through the operation of the transmission mechanism and the pulling member to achieve polishing;

[0026] Step 4: Cutting the sandpaper strips: After polishing is completed, stop driving the metal O-ring to rotate, cut the sandpaper strips through the cutting mechanism, and discharge the used sandpaper strips through the pulling piece;

[0027] Step 5: Unloading: Contract the telescopic end of the second electric push rod to drive the first top spiral arc piece and the second top spiral arc piece to move upward, and drive the two first transmission rollers of the clamping assembly to move away from each other by running the first motor to remove the metal O-ring.

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

[0029] 1. The present invention can wrap the sandpaper strip around the metal O-ring, and the sandpaper strip can wrap the metal O-ring in radial direction. When the fixed rotating mechanism drives the metal O-ring to rotate with its center as the base point, the sandpaper strip can be used to 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 process the burrs at the same time, thereby improving production efficiency.

[0030] 2. The present invention can wind the sandpaper strip onto the metal O-ring by setting the winding mechanism, which has a novel structure and improves the efficiency of the operation.

[0031] 3. The fixed rotating mechanism proposed in the present invention can not only clamp the metal O-ring, but also drive the metal O-ring to rotate with its center as the base point. The structure is novel and can make the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

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

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

[0035] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0036] Figure 5 for Figure 1 A schematic diagram of the structure of the winding mechanism from the first perspective;

[0037] Figure 6 for Figure 1 A schematic diagram of the structure of the winding mechanism from a second perspective;

[0038] Figure 7 It is a schematic diagram of the top structure of the present invention.

[0039] The numbers in the figure represent:

[0040] 1- platform; 2- fixed rotating mechanism; 21- long through hole; 22- slider; 23- first transmission roller; 24- bidirectional screw rod; 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 piece; 812- first top spiral arc piece; 813- second bottom spiral arc piece; 814- second top spiral arc piece; 82- pulling member; 821- third transmission roller; 822- second gear; 823- fourth motor; 83- arc guide channel; 84- connecting frame; 85- second electric push rod; 100- metal O-ring. DETAILED DESCRIPTION

[0041] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0042] This embodiment provides a technical solution: a polishing device for metal seal processing, such as Figures 1 to 7 As shown, it 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 arranged on the platform 1, the base plate 3 is arranged on one side of the platform 1, the sandpaper roll 4, the transmission mechanism 5, the winding mechanism 8 and the cutting mechanism 6 are centrally arranged on the base plate 3, the sandpaper roll 4 is rotatably mounted on one side of the base plate 3 by a mounting roller, and it can be disassembled for later 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, and when in use, the transmission mechanism 5 is used to transmit the sandpaper strips of the sandpaper roll 4 to gradually loosen the sandpaper strips on the sandpaper roll 4, and the cutting mechanism 6 is used to cut a section of the sandpaper strips that have been used, so that the next polishing operation can be carried out.

[0043] The sandpaper strip on the sandpaper roll 4 has multiple sections, and each section of the sandpaper strip includes a coarse sand portion located at the front section and a fine sand portion located at the rear section. The cutting mechanism 6 accurately cuts each section of the sandpaper strip. When in use, the coarse sand portion of the sandpaper strip is first used to roughly polish the metal O-ring 100, and then the fine sand portion is used to finely polish the metal O-ring 100 to ensure the polishing effect.

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

[0045] The first motor 27 is driven to rotate the bidirectional screw rod 24 in the forward direction to move the two sliders 22 away from each other and increase the gap between the two sliders 22. The metal O-ring 100 can be placed on the platform 1, and the two sides of the metal O-ring 100 are respectively located in the gap between the two first transmission rollers 23 in the two clamping assemblies (such as Figure 1 As shown), the first motors 27 in the two clamping assemblies are then operated in the opposite direction at the same time, and the two sliders 22 in the clamping assemblies are moved closer to each other until the two first transmission rollers 23 clamp the metal O-ring 100. At this time, due to the restrictions on both sides of the metal O-ring 100 by the two clamping assemblies, the metal O-ring 100 is fixed, and then the second motor 26 is operated to drive the metal O-ring 100 to rotate with its center as the base point.

[0046] In order to reduce the friction between the metal O-ring 100 and the platform 1 , a rotating wheel may be installed on the platform 1 to support the metal O-ring 100 and reduce the friction between the two.

[0047] The transmission mechanism 5 includes two second transmission rollers 51 rotatably mounted on the base plate 3 via a first rotating shaft, the two second transmission rollers 51 are symmetrically arranged up and down, the two first rotating shafts are both mounted with a first gear 52, and the two first gears 52 are meshed and connected, a third motor 53 is fixed on the base plate 3 via a mounting seat, 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 transmission rollers 51, the two second transmission rollers 51 will clamp and fix the sandpaper, and when the third motor 53 is operated, the two second transmission rollers 51 can be driven to rotate in opposite directions through the cooperation of the two first gears 52 to realize the transmission of the sandpaper strip.

[0049] The cutting mechanism 6 includes two upper and lower clamping plates 61 fixed to the base plate 3, and a transmission channel is formed between the two clamping plates 61. The sandpaper strips after passing through the transmission mechanism 5 pass 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 through a mounting seat. 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 the sandpaper strip needs to be cut, the telescopic end of the first electric push rod 63 is extended so that the blade 64 can pass through the slit 62, thereby achieving the cutting of the sandpaper strip.

[0051] In order to ensure that the sandpaper strips are transmitted more smoothly, the base plate 3 is rotatably mounted with a guide roller 7, and 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 installed on one side of the substrate 3, and is used to wind the sandpaper strip of the substrate 3 onto the metal O-ring 100 for one circle, and cooperate with the transmission mechanism 5 to drive the sandpaper strip to pull, so as to achieve the polishing of the metal O-ring 100. The winding mechanism 8 includes a first bottom spiral arc piece 811 and a second bottom spiral arc piece 813 fixed to one side of the substrate 3 through a connecting plate, and a second electric push rod 85 fixed to one side of the substrate 3 through a mounting frame, wherein the first bottom spiral arc piece 811 and the sandpaper strip transmitted by the cutting mechanism 6 are located on the same straight line to ensure that the sandpaper strip can smoothly transition to the first bottom spiral arc piece 811, and a connecting frame 84 is fixed to the telescopic end of the second electric push rod 85, on which the first top spiral arc piece 812 and the second top spiral arc piece 813 are fixed. The first bottom spiral arc piece 814, the first top spiral arc piece 812, the second bottom spiral arc piece 813 and the second top spiral arc piece 814 are connected and closed in sequence to form a spiral channel 81. The sandpaper strip passing through the cutting mechanism 6 enters the spiral channel 81. A pulling member 82 installed on the connecting frame 84 is provided at the tail end of the spiral channel 81. The pulling member 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 pulling member 82.

[0053] When the second electric push rod 85 is operated, the first top spiral arc piece 812 and the second top spiral arc piece 814 can be vertically displaced to realize whether the first top spiral arc piece 812 and the second top spiral arc piece 814 are docked with the first bottom spiral arc piece 811 and the second bottom spiral arc piece 813. After the first top spiral arc piece 812 and the second top spiral arc piece 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 at the first bottom spiral arc piece 811. When the first top spiral arc piece 812 and the second top spiral arc piece 814 are moved downward, the spiral channel 81 can surround the corresponding part of the metal O-ring 100, and the sandpaper strip driven by the transmission mechanism 5 will circle the metal O-ring 100 along the spiral channel 81 to entangle the metal O-ring 100, and 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 portion and a shielding portion fixed at both ends of the U-shaped portion, and the shielding portion is made of soft rubber, which only occupies the edge portion of the width of the sandpaper strip. When the sandpaper strip is pulled tight by force, the sandpaper strip will break through the soft rubber constraint 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 the second rotating shaft, a second gear 822 is fixed on each of the two second rotating shafts, the two second gears 822 are meshingly connected, a fourth motor 823 is fixed on the connecting frame 84 via a mounting seat, 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 transmission rollers 821 . The two third transmission rollers 821 will clamp the sandpaper strip, and the sandpaper strip can be transmitted by operating the fourth motor 823 .

[0057] This embodiment also provides a polishing method of the above-mentioned polishing device for metal seal processing, comprising the following steps:

[0058] Step 1, fix the metal O-ring 100: contract the telescopic end of the second electric push rod 85, drive the first top spiral arc piece 812 and the second top spiral arc piece 814 to move upward, and drive the two first transmission rollers 23 of the clamping assembly to move away from each other by running the first motor 27, and then place the metal O-ring 100 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 piece 811 and the second bottom spiral arc piece 813, extend the telescopic end of the second electric push rod 85, the first bottom spiral arc piece 811, the first top spiral arc piece 812, the second bottom spiral arc piece 813 and the second top spiral arc piece 814 are connected and closed in sequence to form a spiral channel 81, and run the first motor 27 to make the two first transmission rollers 23 clamp the metal O-ring 100;

[0059] Step 2, winding the sandpaper strip: The sandpaper strip on the sandpaper roll 4 is transmitted by the transmission mechanism 5, and the sandpaper strip passes through the cutting mechanism 6 and the spiral channel 81 and passes out from the pulling member 82, that is, the sandpaper strip is clamped and fixed by the pulling member 82 of the winding mechanism 8, and the transmission mechanism 5 is reversely operated to pull the sandpaper strip in the reverse direction, so that the sandpaper strip is tightened, freed from the constraint of the spiral channel 81 and wound on 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 through the fixed rotating mechanism 2, and at the same time, the sandpaper strip is driven to rub against the surface of the metal O-ring 100 through the operation of the transmission mechanism 5 and the pulling member 82 to achieve polishing;

[0061] Specifically, two methods can be adopted. The first method is to drive the sandpaper strip to be transmitted to one side of the pulling member 82 through the transmission mechanism 5 and the pulling member 82. 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 be transmitted back and forth through the cooperation of the transmission mechanism 5 and the pulling member 82 (first transmitted to one side of the pulling member 82, and then transmitted to one side of the transmission mechanism 5, that is, completing a cycle). In this method, the sandpaper strip can be rubbed multiple times, which saves sandpaper strips and reduces costs.

[0062] Step 4, cutting the sandpaper strips: After polishing is completed, stop driving the metal O-ring 100 to rotate, cut the sandpaper strips through the cutting mechanism 6, and discharge the used sandpaper strips through the pulling member 82;

[0063] Step 5, unloading: retract the telescopic end of the second electric push rod 85 to drive the first top spiral arc piece 812 and the second top spiral arc piece 814 to move upward, and drive the two first transmission rollers 23 of the clamping assembly to move away from each other by running the first motor 27 to remove the metal O-ring 100.

[0064] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made to the present invention within the spirit and scope defined by the claims, but they will all fall within the scope of protection of the present invention.

Claims

1. A polishing device for metal seal processing, characterized in that: include: Platform (1); A fixed rotating mechanism (2), the fixed rotating mechanism (2) being arranged on the platform (1), and the fixed rotating mechanism (2) being used to clamp the metal O-ring (100) and drive the metal O-ring (100) to rotate with its circle center as a base point; A substrate (3), wherein the substrate (3) is arranged on one side of the platform (1); A sandpaper roll (4), wherein the sandpaper roll (4) is mounted on the base plate (3); A transmission mechanism (5), the transmission mechanism (5) being mounted on the substrate (3) and used for transmitting the sandpaper strips on the substrate (3); A cutting mechanism (6), the cutting mechanism (6) being mounted on the substrate (3) and being used for cutting the sandpaper strips of the substrate (3); A winding mechanism (8) is installed on one side of the substrate (3) and is used to wind the sandpaper strip of the substrate (3) around the metal O-ring (100) for one circle, and cooperate with the transmission mechanism (5) to drive the sandpaper strip to pull, so as to achieve polishing of the metal O-ring (100).

2. The polishing device for metal seal processing according to claim 1, characterized in that: The fixed rotating mechanism (2) comprises two symmetrically arranged clamping assemblies, the clamping assemblies comprising an elongated through hole (21) opened on the platform (1), two sliders (22) being slidably arranged in the elongated through hole (21), a bidirectional screw rod (24) being rotatably mounted on the lower side of the platform (1) through a mounting plate and a guide shaft (25) being fixed thereto, the two sliders (22) being both threadedly connected to the bidirectional screw rod (24), and the two sliders (22) being slidably connected to the guide shaft (25), a first motor (27) for driving the bidirectional screw rod (24) to rotate being fixed on one of the mounting plates, a first transmission roller (23) being rotatably mounted on the upper sides of the two sliders (22), and a second motor (26) for driving the corresponding first transmission roller (23) to rotate being mounted on the lower side of at least one of the sliders (22).

3. The polishing device for metal seal processing according to claim 1, characterized in that: The transmission mechanism (5) comprises two second transmission rollers (51) rotatably mounted on a base plate (3) via a first rotating shaft, the two first rotating shafts are both mounted with a first gear (52), and the two first gears (52) are meshingly connected, a third motor (53) is fixed on the base plate (3) via a mounting seat, and the third motor (53) is connected to one of the first rotating shafts.

4. The polishing device for metal seal processing according to claim 1, characterized in that: The cutting mechanism (6) comprises two clamping plates (61) arranged one above the other and fixed to the base plate (3), and a transmission channel is formed between the two clamping plates (61), and the sandpaper strips of the sandpaper roll (4) pass through the transmission channel. The two clamping plates (61) are provided with corresponding slits (62). The base plate (3) is fixed with a first electric push rod (63) through a mounting seat, and 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).

5. The polishing device for metal seal processing according to claim 1, characterized in that: The winding mechanism (8) comprises a first bottom spiral arc piece (811) and a second bottom spiral arc piece (813) fixed to one side of the base plate (3) via a connecting plate, and a second electric push rod (85) fixed to one side of the base plate (3) via a mounting frame, the telescopic end of the second electric push rod (85) being fixed with a connecting frame (84), the connecting frame (84) being fixed with a first top spiral arc piece (812) and a second top spiral arc piece (814), the first bottom spiral arc piece (811) and the first top spiral arc piece (813) being fixed to one side of the base plate (3), 12), when the second bottom spiral arc piece (813) and the second top spiral arc piece (814) are connected and closed in sequence, a spiral channel (81) is formed, and the sandpaper strip passing through the cutting mechanism (6) enters the spiral channel (81). A pulling member (82) installed on a connecting frame (84) is provided at the tail end of the spiral channel (81), and the pulling member (82) is used to pull the sandpaper strip. An arc-shaped guiding channel (83) is fixed on the connecting frame (84), and the lower end of the arc-shaped guiding channel (83) corresponds to the pulling member (82).

6. The polishing device for metal seal processing according to claim 5, characterized in that: The cross section of the spiral channel (81) comprises a U-shaped portion and shielding portions fixed at both ends of the U-shaped portion, and the shielding portions are made of soft rubber.

7. The polishing device for metal seal processing according to claim 5, characterized in that: The pulling member (82) includes two third transmission rollers (821) rotatably mounted on a connecting frame (84) via a second rotating shaft, a second gear (822) is fixed to each of the two second rotating shafts, the two second gears (822) are meshingly connected, a fourth motor (823) is fixed to the connecting frame (84) via a mounting seat, and an output end of the fourth motor (823) is connected to one of the second rotating shafts.

8. The polishing device for metal seal processing according to claim 1, characterized in that: The sandpaper strip on the sandpaper roll (4) has multiple sections, and each section of the sandpaper strip includes a coarse sand portion located at the front section and a fine sand portion located at the rear section.

9. The polishing device for metal seal processing according to claim 1, characterized in that: The base plate (3) is rotatably mounted with a guide roller (7), and the guide roller (7) is located between the cutting mechanism (6) and the winding mechanism (8).

10. A polishing method of a polishing device for metal seal processing according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, fixing the metal O-ring (100): contracting the telescopic end of the second electric push rod (85), driving the first top spiral arc piece (812) and the second top spiral arc piece (814) to move upward, and driving the two first transmission rollers (23) of the clamping assembly to move away from each other by running the first motor (27), and then placing the metal O-ring (100) 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 a telescopic end of a second electric push rod (85) is extended on the upper side of the first bottom spiral arc piece (811) and the second bottom spiral arc piece (813), the first bottom spiral arc piece (811), the first top spiral arc piece (812), the second bottom spiral arc piece (813) and the second top spiral arc piece (814) are sequentially connected and closed to form a spiral channel (81), and the first motor (27) is operated to clamp the two first transmission rollers (23) against the metal O-ring (100); Step 2: Winding the sandpaper strip: The sandpaper strip on the sandpaper roll (4) is transmitted through the transmission mechanism (5), and the sandpaper strip passes through the cutting mechanism (6), the spiral channel (81) and out of the pulling member (82), and the transmission mechanism (5) is operated in the reverse direction, so that the sandpaper strip is pulled in the reverse direction, so that the sandpaper strip is tightened, freed from the constraint of the spiral channel (81) and wound around the metal O-ring (100); Step 3, polishing: the metal O-ring (100) is driven to rotate with its center as the base point through the fixed rotating mechanism (2), and at the same time, the sandpaper strip is driven to rub against the surface of the metal O-ring (100) through the operation of the transmission mechanism (5) and the pulling member (82) to achieve polishing; Step 4: Cutting the sandpaper strips: After polishing is completed, stop driving the metal O-ring (100) to rotate, cut the sandpaper strips through the cutting mechanism (6), and discharge the used sandpaper strips through the pulling member (82); Step 5, unloading: retract the telescopic end of the second electric push rod (85) to drive the first top spiral arc piece (812) and the second top spiral arc piece (814) to move upward, and drive the two first transmission rollers (23) of the clamping assembly to move away from each other by running the first motor (27) to remove the metal O-ring (100).

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