Rubber ring edge trimmer

Abstract

A rubber ring trimming machine relates to the technical field of rubber ring trimming devices and comprises a ring clamping device, the ring clamping device is connected with an external moving track, a plurality of outer clamping plates are mounted at the lower end of the ring clamping device at equal intervals on the circumference of the lower end of the ring clamping device, and inner clamping plates are arranged at the lower end of the ring clamping device relative to the inner sides of the outer clamping plates. The outer clamping plate and the inner clamping plate are correspondingly arranged, the outer end of the shaft body penetrates into the ring clamping device, the outer clamping plate can rotate towards one side of the inner clamping plate, the inner clamping plate can rotate towards one side of the outer clamping plate, and when the ring clamping device moves to the position where the rubber ring is placed under the moving track, the rubber ring can be placed between the inner clamping plate and the outer clamping plate; and then the inner clamping plate is controlled to rotate outwards, and the outer clamping plate is controlled to rotate inwards so as to make contact with the outer side of the rubber ring, so that acting force is evenly applied to the outer side of the rubber ring, deformation of the rubber ring is avoided, and meanwhile, the rotating angles of the inner clamping plate and the outer clamping plate can be controlled to clamp and fix the rubber rings with different diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber ring trimming devices, and more particularly to a rubber ring trimming machine. Background Art

[0002] Rubber ring is a common seal. During production, rubber ring needs to be pressed in a mold first. When the rubber molded product is vulcanized, the rubber quickly fills the mold cavity. In order to prevent the rubber from being insufficient and filling the mold cavity, a certain amount of interference is maintained to overflow, thus forming overflow glue, i.e. flash. In order to make the product meet the specified size and ensure the appearance quality, the finished product after vulcanization needs to remove these excess rubber edges first. This process is commonly known as trimming.

[0003] Existing rubber ring trimming devices, such as a rubber ring trimming machine with publication number CN212824437U, include a bracket integrally connected to a workbench, a rotating disk rotatably connected to the workbench, a cylindrical groove is provided in the center of the rotating disk, the rubber ring is placed on the rotating disk, and the inner diameter of the rubber ring and the inner diameter of the cylindrical groove are coaxial, a cylinder is fixedly connected to the bracket, the output end of the cylinder output shaft is fixedly connected to a grinding column, the grinding column extends into the cylindrical groove, and the outer peripheral wall of the grinding column contacts the inner peripheral wall of the rubber ring, the outer peripheral wall of the cylinder output shaft is rotatably connected to a pressure plate, the pressure plate is used to press the rubber ring against the rotating disk, and a vibration component is fixedly connected to the grinding column, the vibration component is used to shake off rubber crumbs adhered to the rubber ring, during the rubber ring trimming operation, the internal burrs of the rubber ring can be removed, and the excess rubber crumbs can be shaken off, thereby improving the yield rate of the rubber ring.

[0004] However, the existing rubber ring trimming device cannot clamp and fix rubber rings of different diameters and sizes before completing the trimming, so a large number of trimming machines of different models and sizes are required to complete the trimming work, which will inevitably cause some rubber ring trimming machines of smaller models to be idle, resulting in the equipment being unable to generate benefits. Summary of the invention

[0005] The invention aims to solve the technical problem in the prior art that rubber rings with different diameters cannot be clamped and fixed before trimming.

[0006] The purpose and effect of the present invention are achieved by the following specific technical means: A rubber ring trimming machine comprises a clamping ring device, the clamping ring device is connected to an external moving track, the clamping ring device is installed with an outer clamping plate at the lower end, the outer clamping plate is arranged in an arc-shaped plate, and the outer clamping plate is arranged at a plurality of equidistant positions on the circumference of the lower end of the clamping ring device, and the lower end of the clamping ring device is provided with an inner clamping plate on the inner side of the outer clamping plate relative to the lower end of the clamping ring device, and the inner clamping plate is arranged at a plurality of equidistant positions on the circumference of the lower end of the clamping ring device, the outer clamping plate and the inner clamping plate are arranged correspondingly, and the inner clamping plate is also arranged in an arc-shaped plate, the upper ends of the outer clamping plate and the inner clamping plate penetrate into the interior of the clamping ring device, and shaft bodies are arranged on both sides of the outside, and the outer end of the shaft body penetrates into the interior of the clamping ring device, so that the outer clamping plate can rotate toward one side of the inner clamping plate, and the inner clamping plate can rotate toward one side of the outer clamping plate, and the lower part of the clamping ring device is provided with a trimming table, and the middle part of the upper end of the trimming table is provided with a first telescopic device, and the upper edge of the trimming table is arranged A second telescopic device is provided, a telescopic rod is provided on the side opposite to the first telescopic device and the second telescopic device, and a blade is installed at the end of the telescopic rod that is close to each other, and the blade is inclined and tangential to the outer side of the circle, and a rotating rod is installed on the side where the outer splint and the inner splint are close to each other, and the rotating rod is arranged at the middle end of the outer splint and the inner splint, and is arranged vertically, and an extension rod is provided at the lower end of the rotating rod, and a friction block is installed after the bottom of the extension rod passes outward, a rotating ring is installed inside the trimming table, and a driving motor connected to the rotating ring is provided inside the trimming table, and a V-shaped groove is provided on the upper end of the rotating ring, and the upper ends of the outer splint and the inner splint are connected with an arc plate, and the lower ends of the first rack and the second rack are meshed with the arc plate, a driving disk is installed at the middle end of the clamping ring device, and a driving ring is installed near the edge of the clamping ring device.

[0007] Furthermore, the bottom of the friction block is spherical, an inner contraction groove is provided inside the upper end of the friction block, the lower end of the extension rod extends into the inner contraction groove, and a spring is placed inside the inner contraction groove.

[0008] Furthermore, a vertically extending slot is provided on the outer side of the lower end of the extension rod, and a mounting screw is provided on the upper end of the friction block, and one end of the screw extends into the slot.

[0009] Furthermore, a friction layer is installed on the surface of the rotating ring corresponding to the V-shaped groove, and the friction layer is made of rubber material. A friction outer layer of the same rubber material is arranged on the outer side of the bottom of the friction block.

[0010] Furthermore, gear teeth are provided at the upper end of the arc plate, and a first rack and a second rack are installed on the upper sides of the outer clamping plate and the inner clamping plate inside the clamping ring device, the outer side of the driving plate is in contact with the second rack, and the inner side of the driving ring is in contact with the first rack.

[0011] Furthermore, a limiting slide groove is provided inside the clamping ring device corresponding to the upper ends of the first rack and the second rack, a slider is provided on the upper ends of the first rack and the second rack, and the slider enters the limiting slide groove, and a spring is installed on one side of the limiting slide groove corresponding to the slider.

[0012] Furthermore, a motor device for driving the driving ring and the driving disk to rotate is arranged inside the clamping ring device, and an inner groove and an outer protrusion are arranged on the inner side of the driving ring, and the inner groove and the outer protrusion are arranged in a triangular shape.

[0013] Furthermore, the outer side of the driving disk is provided with an inner groove and an outer protrusion having the same structure as that on the driving ring. Beneficial Effects

[0014] A rubber ring trimming machine has the following beneficial effects: 1. An outer clamping plate is installed at the lower end of the clamping ring device, and the outer clamping plate is an arc-shaped plate. A plurality of outer clamping plates are arranged at equal distances on the circumference of the lower end of the clamping ring device. An inner clamping plate is arranged on the inner side of the lower end of the clamping ring device relative to the outer clamping plate. A plurality of inner clamping plates are arranged at equal distances on the circumference of the lower end of the clamping ring device. The outer clamping plate and the inner clamping plate are arranged correspondingly, and the inner clamping plate is also an arc-shaped plate. The upper ends of the outer clamping plate and the inner clamping plate penetrate into the interior of the clamping ring device, and shaft bodies are arranged on both sides of the outside, and the outer end of the shaft body penetrates into the interior of the clamping ring device, so that the outer clamping The plate can rotate toward the inner plate side, and the inner plate can rotate toward the outer plate side. When the clamping ring device is displaced under the moving track to the position where the rubber ring is placed, the rubber ring can be placed between the inner plate and the outer plate. Then, the inner plate is controlled to rotate outward, while the outer plate is controlled to rotate inward, so as to contact the outer side of the rubber ring, thereby achieving uniform force on the outer side of the rubber ring to avoid its deformation. At the same time, the rotation angle of the inner plate and the outer plate can be controlled to adapt to the clamping and fixation of rubber rings of different diameters.

[0015] 2. After the rubber ring is clamped and fixed, the clamping ring device can bring the rubber ring to the upper end of the trimming table, and then move downward to allow the bottom of the inner and outer clamping plates to enter the inner side of the rotating ring of the trimming table, so that the bottom of the friction block contacts the friction layer. The extension rod squeezes the spring into the inner shrinkage groove, so that the friction blocks under the clamping plates with different rotation angles can contact the friction layer on their outer sides. Then, when the rotating ring rotates, the friction force can be used to drive the friction block and the rotating rod to rotate, and even drive the rubber ring clamped by them to rotate. The lower part of the clamping ring device is provided with a trimming An edge table, a first telescopic device is installed in the middle of the upper end of the trimming table, a second telescopic device is installed at the edge of the upper end of the trimming table, a telescopic rod is arranged on the side opposite to the first telescopic device and the second telescopic device, a blade is installed at the end of the telescopic rod close to each other, and the blade is inclined and tangent to the outer side of the circle, so that the telescopic rod can make the blade contact with the outer side of the rubber ring from the gap between the outer splint and the inner splint, so that after the rubber ring is rotated, the overflow glue on the outer side can contact with the blade to complete the trimming, and the telescopic device can adapt to rubber rings of different sizes.

[0016] 3. A motor device for driving the driving ring and the driving disk to rotate is arranged inside the clamping ring device, an inner groove and an outer protrusion are arranged on the inner side of the driving ring, and the inner groove and the outer protrusion are arranged in a triangular shape, and an inner groove and an outer protrusion of the same structure as those on the driving ring are arranged on the outer side of the driving disk. The driving disk can be rotated to make the second rack contact with the inner groove or the outer protrusion, thereby driving it to move in the limiting slide groove, and then the arc plate is used to control the rotation angle of the inner clamping plate. The driving ring is rotated to make the first rack contact with the inner groove or the outer protrusion, and also drive it to move in the limiting slide groove, thereby achieving the effect of controlling the rotation angle of the outer clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall external schematic diagram of the present invention.

[0018] Figure 2 It is a bottom view schematic diagram of the clamping ring device of the present invention.

[0019] Figure 3 It is a cross-sectional schematic diagram illustrating the clamping ring device of the present invention.

[0020] Figure 4 For the present invention Figure 3 Enlarged schematic diagram at point A in the middle.

[0021] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of point B in the middle.

[0022] Figure 6 It is a side cross-sectional schematic diagram of the outer splint of the present invention.

[0023] Figure 7 For the present invention Figure 5 Enlarged schematic diagram at point C in the middle.

[0024] Figure 8 It is a top view cross-sectional schematic diagram of the drive disk and the drive ring of the present invention.

[0025] Figure 1-8 In: 1-clamping ring device, 2-moving track, 3-trimming table, 4-outer clamping plate, 5-inner clamping plate, 6-rotating ring, 601-friction layer, 7-first telescopic device, 8-second telescopic device, 9-telescopic rod, 901-blade, 10-arc plate, 11-friction block, 1101-retracted groove, 12-driving plate, 13-driving ring, 1301-inner groove, 1302-outer protrusion, 14-rotating rod, 1401-extension rod, 15-first rack, 16-second rack, 17-limiting slide groove, 18-slider. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] Reference Figure 1-8 , a rubber ring trimming machine exploded structure diagram and plane structure diagram A rubber ring trimming machine includes a clamping ring device 1, which is connected to an external moving track 2, and a vertical moving component is arranged between the clamping ring device 1 and the moving track 2. An outer clamping plate 4 is installed at the lower end of the clamping ring device 1, and the outer clamping plate 4 is arranged as an arc plate. The outer clamping plate 4 is arranged at a plurality of equal distances on the circumference of the lower end of the clamping ring device 1. An inner clamping plate 5 is arranged on the inner side of the lower end of the clamping ring device 1 relative to the outer clamping plate 4. The inner clamping plate 5 is arranged at a plurality of equal distances on the circumference of the lower end of the clamping ring device 1. The outer clamping plate 4 is arranged corresponding to the inner clamping plate 5, and the inner clamping plate 4 is also arranged as an arc plate. The upper ends of the outer clamping plate 4 and the inner clamping plate 5 are penetrated. The outer ends of the shafts penetrate into the clamping ring device 1, so that the outer clamping plate 4 can rotate toward the inner clamping plate 5, and the inner clamping plate 5 can rotate toward the outer clamping plate 4. A trimming table 3 is arranged at the lower part of the clamping ring device 1, and a first telescopic device 7 is installed at the middle of the upper end of the trimming table 3, and a second telescopic device 8 is installed at the upper edge of the trimming table 3. A telescopic rod 9 is arranged on the side opposite to the first telescopic device 7 and the second telescopic device 8, and a blade 901 is installed at the end of the telescopic rod 9 close to each other, and the blade 901 is arranged to be inclined tangent to the outer side of the circle; In a specific implementation, a rotating rod 14 is installed on the side where the outer clamping plate 4 and the inner clamping plate 5 are close to each other. The rotating rod 14 is arranged at the middle end of the outer clamping plate 4 and the inner clamping plate 5, and is arranged vertically. An extension rod 1401 is arranged at the lower end of the rotating rod 14. A friction block 11 is installed after the bottom of the extension rod 1401 passes outward. The bottom of the friction block 11 is spherical. An inner shrinkage groove 1101 is arranged inside the upper end of the friction block 11. The lower end of the extension rod 1401 extends into the inner shrinkage groove 1101. A spring is placed inside the inner shrinkage groove 1101. A vertically extending card groove is arranged outside the lower end of the extension rod 1401. A mounting screw is arranged at the upper end of the friction block 11, and one end of the screw extends into the card groove. In a specific implementation, a rotating ring 6 is installed inside the trimming table 3, a driving motor connected to the rotating ring 6 is arranged inside the trimming table 6, a V-shaped groove is arranged on the upper end of the rotating ring 6, a friction layer 601 is installed on the surface of the rotating ring 6 corresponding to the V-shaped groove, and the friction layer 601 is made of rubber material, and a friction outer layer of the same rubber material is arranged on the outer side of the bottom of the friction block 11; In a specific implementation, an arc plate 10 is connected to the upper ends of the outer clamping plate 4 and the inner clamping plate 5, and gear teeth are arranged on the upper ends of the arc plate 10. A first rack 15 and a second rack 16 are installed on the upper sides of the outer clamping plate 4 and the inner clamping plate 5 inside the clamping ring device 1. The lower ends of the first rack 15 and the second rack 16 are engaged with the arc plate 10. A driving plate 12 is installed at the middle end of the clamping ring device 1. The outer side of the driving plate 12 contacts the second rack 16. A driving ring 13 is installed near the edge of the clamping ring device 1. The inner side of the driving ring 13 contacts the first rack 15. A limiting slide groove 17 is provided at the upper ends of the first rack 15 and the second rack 16 inside the clamping ring device 1. Slide blocks 18 are arranged on the upper ends of the first rack 15 and the second rack 16, and the slide blocks 18 enter the limiting slide groove 17. A spring is installed on one side of the limiting slide groove 17 corresponding to the slide block 18. In a specific implementation, a motor device is disposed inside the clamping ring device 1 to drive the driving ring 13 and the driving disk 12 to rotate. An inner groove 1301 and an outer protrusion 1302 are disposed on the inner side of the driving ring 13. Both the inner groove 1301 and the outer protrusion 1302 are arranged in a triangular shape. The outer side of the driving disk 12 is provided with an inner groove 1301 and an outer protrusion 1302 of the same structure as those on the driving ring 13.

[0028] Working principle: An outer clamping plate 4 is installed at the lower end of the clamping ring device 1, and the outer clamping plate 4 is an arc-shaped plate. There are multiple outer clamping plates 4 equidistantly arranged on the circumference of the lower end of the clamping ring device 1. An inner clamping plate 5 is arranged on the inner side of the lower end of the clamping ring device 1 relative to the outer clamping plate 4. There are multiple inner clamping plates 5 equidistantly arranged on the circumference of the lower end of the clamping ring device 1. The outer clamping plate 4 and the inner clamping plate 5 are arranged correspondingly, and the inner clamping plate 4 is also an arc-shaped plate. The upper ends of the outer clamping plate 4 and the inner clamping plate 5 penetrate into the interior of the clamping ring device 1, and shafts are arranged on both sides of the outside, and the outer end of the shaft penetrates into the interior of the clamping ring device 1, so that the outer clamping plate 4 can rotate toward the side of the inner clamping plate 5, and the inner clamping plate 5 can rotate toward the side of the outer clamping plate 4. When the clamping ring device 1 is displaced under the moving track 2 to the place where the rubber ring is placed, the rubber ring can be placed between the inner clamping plate 5 and the outer clamping plate 4 Then, the inner plate 5 is controlled to rotate outwardly, while the outer plate 4 is controlled to rotate inwardly, so as to contact the outer side of the rubber ring, so as to achieve the effect of uniformly applying force to the outer side of the rubber ring to prevent its deformation. At the same time, the rotation angle of the inner plate 5 and the outer plate 4 can be controlled to adapt to the clamping and fixation of rubber rings of different diameters. Then, a rotating rod 14 is installed on the side where the outer plate 4 and the inner plate 5 are close to each other. The rotating rod 14 is arranged at the middle end of the outer plate 4 and the inner plate 5, and is arranged vertically. An extension rod 1401 is arranged at the lower end of the rotating rod 14, and a friction block 11 is installed after the bottom of the extension rod 1401 passes outward. The bottom of the friction block 11 is spherical, and an inner shrinkage groove 1101 is arranged inside the upper end of the friction block 11, and the lower end of the extension rod 1401 extends into the inner shrinkage groove 110 1, a spring is placed inside the retracted groove 1101, a vertically extending slot is arranged outside the lower end of the extension rod 1401, a mounting screw is arranged on the upper end of the friction block 11, and one end of the screw extends into the slot, a rotating ring 6 is arranged inside the trimming table 3, a driving motor connected to the rotating ring 6 is arranged inside the trimming table 6, a V-shaped groove is arranged on the upper end of the rotating ring 6, a friction layer 601 is arranged on the surface of the rotating ring 6 corresponding to the V-shaped groove, and the friction layer 601 is made of rubber material, and a friction outer layer of the same rubber material is arranged on the outer side of the bottom of the friction block 11. When the rubber ring is clamped and fixed, the clamping ring device 1 can bring the rubber ring to the upper end of the trimming table 3, and then move downward to allow the bottom of the inner clamping plate 5 and the outer clamping plate 4 to enter the inner side of the rotating ring 6 of the trimming table 3, so that the friction block The bottom of 11 contacts with the friction layer 601, wherein the extension rod 1401 squeezes the spring into the inner shrinkage groove 1101, so that the friction block 601 under the clamping plate of different rotation angles can make its outer side contact with the friction layer 601, and then when the rotating ring 6 rotates, the friction force can be used to drive the friction block 11 and the rotating rod 14 to rotate, and even drive the rubber ring clamped by them to rotate, wherein a trimming table 3 is arranged at the lower part of the clamping ring device 1, a first telescopic device 7 is installed at the middle part of the upper end of the trimming table 3, and a second telescopic device 8 is installed at the upper edge of the trimming table 3, and a telescopic rod 9 is arranged on the side opposite to the first telescopic device 7 and the second telescopic device 8, and a blade 901 is installed at the end of the telescopic rod 9 close to each other, and the blade 901 is inclined and tangential to the outer side of the circle.The telescopic rod 9 allows the blade 901 to contact the outer side of the rubber ring from the gap between the outer clamping plate 4 and the inner clamping plate 5, so that after the rubber ring is rotated, the overflowing glue on the outer side can contact the blade 901 to complete the trimming. The telescopic device can adapt to rubber rings of different sizes. The upper ends of the outer clamping plate 4 and the inner clamping plate 5 are connected with an arc plate 10, and the upper ends of the arc plate 10 are provided with gear teeth. The inner side of the clamping ring device 1 is provided with a gear corresponding to the upper side of the outer clamping plate 4 and the inner clamping plate 5. The first rack 15 and the second rack 16 are engaged with the arc plate 10 at their lower ends. A driving plate 12 is installed at the middle end of the clamping ring device 1. The outer side of the driving plate 12 is in contact with the second rack 16. A driving ring 13 is installed near the edge of the clamping ring device 1. The inner side of the driving ring 13 is in contact with the first rack 15. A limiting sliding groove 17 is provided at the upper end of the first rack 15 and the second rack 16 in the clamping ring device 1. The first rack 15 and the second rack 16 are engaged with the arc plate 10. A driving plate 12 is installed at the middle end of the clamping ring device 1. The outer side of the driving plate 12 is in contact with the second rack 16. A driving ring 13 is installed near the edge of the clamping ring device 1. The inner side of the driving ring 13 is in contact with the first rack 15. The upper end of the rack 16 is provided with a slider 18, and the slider 18 enters the inside of the limiting slide groove 17. A spring is installed on one side of the limiting slide groove 17 corresponding to the slider 18. A motor device for driving the driving ring 13 and the driving disk 12 to rotate is provided inside the clamping ring device 1. The inner side of the driving ring 13 is provided with an inner groove 1301 and an outer protrusion 1302. The inner groove 1301 and the outer protrusion 1302 are both triangularly arranged. The outer side of the driving disk 12 is provided with an inner structure having the same structure as that on the driving ring 13. The groove 1301 and the outer protrusion 1302 can be rotated by the driving plate 12, so that the second rack 16 contacts the inner groove 1301 or the outer protrusion 1302, thereby driving it to move in the limiting slide groove 17, and then the arc plate 10 is used to control the rotation angle of the inner clamping plate 5. By rotating the driving ring 13, the first rack 15 contacts the inner groove 1301 or the outer protrusion 1302, and also drives it to move in the limiting slide groove 17, so as to achieve the effect of controlling the rotation angle of the outer clamping plate 5.

Claims

1. A rubber ring trimming machine, comprising a clamping ring device (1) and a movable track (2), characterized in that: An outer clamping plate (4) is installed at the lower end of the clamping ring device (1), and the outer clamping plate (4) is an arc-shaped plate. A plurality of the outer clamping plates (4) are equidistantly arranged on the circumference of the lower end of the clamping ring device (1). An inner clamping plate (5) is arranged on the inner side of the lower end of the clamping ring device (1) relative to the outer clamping plate (4). A plurality of the inner clamping plates (5) are equidistantly arranged on the circumference of the lower end of the clamping ring device (1). The outer clamping plate (4) and the inner clamping plate (5) are arranged correspondingly. The inner clamping plate (4) is also an arc-shaped plate. The upper ends of the outer clamping plate (4) and the inner clamping plate (5) penetrate into the interior of the clamping ring device (1), and shaft bodies are arranged on both sides of the outside, and the outer ends of the shaft bodies penetrate into the interior of the clamping ring device (1); A trimming platform (3) is arranged at the lower part of the clamping ring device (1), a first telescopic device (7) is installed at the middle part of the upper end of the trimming platform (3), a second telescopic device (8) is installed at the edge of the upper end of the trimming platform (3), a telescopic rod (9) is arranged on the side opposite to the first telescopic device (7) and the second telescopic device (8), a blade (901) is installed at the end of the telescopic rod (9) close to each other, and the blade (901) is arranged in an inclined manner tangent to the outer side of the circle, a rotating rod (14) is installed on the side of the outer clamping plate (4) and the inner clamping plate (5) close to each other, and the rotating rod (14) is arranged at the middle end of the outer clamping plate (4) and the inner clamping plate (5) and is arranged vertically, and the An extension rod (1401) is provided at the lower end of the rotating rod (14), and a friction block (11) is installed after the bottom of the extension rod (1401) protrudes outward. A rotating ring (6) is installed inside the trimming table (3), and a driving motor connected to the rotating ring (6) is installed inside the trimming table (6). A V-shaped groove is provided at the upper end of the rotating ring (6). An arc plate (10) is connected to the upper ends of the outer clamping plate (4) and the inner clamping plate (5), and the lower ends of the first rack (15) and the second rack (16) are engaged with the arc plate (10). A driving disk (12) is installed at the middle end of the clamping ring device (1), and a driving ring (13) is installed near the edge of the clamping ring device (1).

2. A rubber ring trimming machine as claimed in claim 1, characterized in that: The bottom of the friction block (11) is spherical, an inner contraction groove (1101) is provided inside the upper end of the friction block (11), the lower end of the extension rod (1401) extends into the inner contraction groove (1101), and a spring is placed inside the inner contraction groove (1101).

3. A rubber ring trimming machine as claimed in claim 2, characterized in that: A vertically extending slot is provided on the outer side of the lower end of the extension rod (1401), and a mounting screw is provided on the upper end of the friction block (11), with one end of the screw extending into the slot.

4. A rubber ring trimming machine as claimed in claim 1, characterized in that: The upper end of the arc plate (10) is provided with gear teeth, and a first rack (15) and a second rack (16) are installed on the upper sides of the outer clamping plate (4) and the inner clamping plate (5) inside the clamping ring device (1).

5. The rubber ring trimming machine according to claim 1, characterized in that: A friction layer (601) is installed on the surface of the rotating ring (6) corresponding to the V-shaped groove, and the friction layer (601) is made of rubber material. The outer side of the bottom of the friction block (11) is provided with a same friction outer layer.

6. A rubber ring trimming machine as claimed in claim 1, characterized in that: The clamping ring device (1) is internally provided with a motor device for driving the driving ring (13) and the driving disk (12) to rotate. The driving ring (13) is internally provided with an inner groove (1301) and an outer protrusion (1302). Both the inner groove (1301) and the outer protrusion (1302) are triangularly arranged.

7. A rubber ring trimming machine as claimed in claim 6, characterized in that: The outer side of the driving disk (12) is provided with an inner groove (1301) and an outer protrusion (1302) of the same structure as those on the driving ring (13).

8. The rubber ring trimming machine according to claim 1, characterized in that: A limiting slide groove (17) is provided inside the clamping ring device (1) at the upper ends of the first rack (15) and the second rack (16), and a slider (18) is provided at the upper ends of the first rack (15) and the second rack (16), and the slider (18) enters the limiting slide groove (17), and a spring is installed on one side of the limiting slide groove (17) corresponding to the slider (18).

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