Grinding device for cable insulation sleeve

Abstract

The invention relates to the technical field of special power cable manufacturing, and particularly discloses a grinding device for a cable insulation sleeve, which comprises a support, a middle shaft and a grinding table, the middle shaft is rotatably assembled in the support, a plurality of positioning rings are rotatably assembled in the support and can rotate in the support along with the rotation of the middle shaft, and the grinding table is used for grinding the cable insulation sleeve. A plurality of positioning plates are annularly and uniformly distributed in the middle of the positioning ring and can move in the radial direction of the positioning ring; a threaded rod is rotationally connected to each positioning plate and is in threaded connection to the positioning ring, and a driven bevel gear is arranged at the end of each threaded rod and can push the threaded rod to rotate and slide in the positioning ring; according to the grinding device for the cable insulation sleeves, the tension force of the grinding belt is adjusted through the tension assembly, so that the grinding belt can be tightly attached to the outer portions of all the insulation sleeves at the same time, the grinding belt automatically moves in the rotating process, the insulation sleeves rotate to be matched with the grinding belt, synchronous grinding of the multiple insulation sleeves is achieved, and the grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of special power cable manufacturing, and in particular to a grinding device for a cable insulation sleeve. Background Art

[0002] Special power cables, also known as special cables, are cables designed for special environments and application requirements. They have special properties that traditional cables do not have. During manufacturing, some special cables will have insulating sleeves added to their outsides according to their different use environments to enhance their performance, prevent current leakage, short circuits, and mutual interference between electrical equipment, ensure that current is transmitted along the predetermined path, and ensure the safe and stable operation of the power system.

[0003] After the insulating sleeve is processed, it is often necessary to use grinding equipment to polish it to remove burrs, flash, unevenness and defects that may occur in the production process on the surface of the insulating sleeve, making the surface smoother and flatter.

[0004] In the existing insulating sleeve grinding, after the grinding device fixes the insulating sleeve, the grinding belt rotates and moves around the insulating sleeve to grind it. This results in the grinding belt being able to grind only a single insulating sleeve and being unable to grind multiple sleeves. The processing efficiency of the insulating sleeve is low, which is not conducive to batch processing of the insulating sleeve. Summary of the invention

[0005] The present invention provides a grinding device for a cable insulating sleeve, aiming to solve the problem in the related art that a grinding belt can only grind a single insulating sleeve and the processing efficiency of the insulating sleeve is low.

[0006] The grinding device for cable insulation sleeve of the present invention comprises a support, a central axis and a grinding table, wherein the central axis is rotatably mounted inside the support, and a plurality of positioning rings are rotatably mounted inside the support, and can rotate inside the support along with the rotation of the central axis, and a plurality of positioning plates are evenly distributed in the middle of the positioning ring in an annular shape, and can move along the radial direction of the positioning ring; Each positioning plate is rotatably connected with a threaded rod, and the threaded rod is threadedly connected to the positioning ring. A driven bevel gear is arranged at the end of each threaded rod, which can push the threaded rod to rotate and slide in the positioning ring. A driving bevel gear is also arranged in the positioning ring to mesh with multiple driven bevel gears. A plurality of sockets are provided inside the grinding table, and the sockets correspond to the positioning rings one by one and are coaxially arranged. A grinding belt is provided on the grinding table, and the grinding belt passes through the side of each socket in turn and can rotate with the rotation of the central axis. The grinding table can move along the axial direction of the central axis when the grinding belt rotates. A tension component is provided on one side of the grinding belt for adjusting its tensioning force.

[0007] Preferably, the upper rotating device of the grinding table is equipped with multiple rotating wheels and two supporting wheels. The grinding belt is mounted between the rotating wheels and the supporting wheels and can rotate under the rotation of the rotating wheels. The grinding belt consists of a belt body and a grinding layer. The grinding layer is located on the side of the belt body away from the rotating wheels, and the width of the grinding layer is smaller than the width of the belt body.

[0008] Preferably, an adjustment groove is opened inside the grinding table, and two supporting wheels are symmetrically distributed on both sides of the adjustment groove. The tension assembly includes a slide, a tension wheel and an adjusting bolt. The slide is located on one side of the belt body and is slidably assembled inside the adjustment groove. The tension wheel is rotatably connected in the slide, and the side of the belt body close to the grinding layer is mounted on the tension wheel. The adjusting bolt is rotatably assembled in the adjustment groove and is threadedly connected to the slide.

[0009] Preferably, the outer sleeve of the central axis is provided with a ring sleeve, which can slide along the axial direction of the central axis, and the ring sleeve is rotatably connected to the inside of the grinding table. A driving wheel is fixedly mounted on the ring sleeve, and a first driven wheel is fixedly mounted on one of the rotating wheels. A first transmission belt is mounted between the driving wheel and the first driven wheel.

[0010] Preferably, a lead screw is transversely fixed on the support, the external thread of the lead screw is connected to a threaded sleeve, and the threaded sleeve is rotatably connected in the grinding table, a second driven wheel is fixedly installed on the end of the threaded sleeve, and a second transmission belt is installed between the second driven wheel and the driving wheel.

[0011] Preferably, an annular cavity is opened inside the positioning ring along its circumferential direction, the driven bevel gear is rotatably assembled in the annular cavity, a cover plate is rotatably assembled in the annular cavity, the active bevel gear is coaxially fixed on the inner side of the cover plate, a plurality of mounting seats are arranged inside the annular cavity, and the threaded rod is threadedly connected in the mounting seat.

[0012] Preferably, a sliding groove is provided on the threaded rod along its axial direction, a connecting rod is fixedly connected to the driven bevel gear, and one end of the connecting rod away from the driven bevel gear is slidably connected in the sliding groove.

[0013] Preferably, a transmission gear is fixedly mounted on the central shaft, a plurality of positioning rings are coaxially fixed with driven gear rings, and the plurality of driven gear rings are meshed with the transmission gear.

[0014] Preferably, a sleeve is provided on the outside of the central axis, and the sleeve can rotate and slide outside the central axis, an adjusting gear is coaxially fixed on the sleeve, and adjusting gear rings are coaxially fixed on the outer sides of the cover plates of multiple positioning rings, and multiple adjusting gear rings are meshed with the adjusting gear.

[0015] Preferably, a magnetic ring is fixedly mounted on the sleeve, and a magnet located on one side of the sleeve is fixedly mounted on the central axis.

[0016] Beneficial effects: 1. When the present invention is in use, the tensioning force of the grinding belt is adjusted by the tension component so that the grinding belt can be tightly attached to the outside of all insulating sleeves at the same time. The grinding belt moves automatically during rotation, and the insulating sleeve rotates itself to cooperate with the grinding belt, thereby realizing synchronous grinding of multiple insulating sleeves, improving grinding efficiency, and accelerating production progress.

[0017] 2. When the present invention is in use, the adjusting mechanism can enable the positioning components to selectively fix the insulating sleeve in different operating modes. All positioning components can be operated synchronously to fix the insulating sleeve at the same time, so as to facilitate the synchronous grinding of multiple insulating sleeves with the same diameter. Each positioning component can also be operated separately to fix the insulating sleeve, so as to facilitate the synchronous grinding of multiple insulating sleeves with different diameters. The applicability of the equipment is stronger, and the use effect of the equipment is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of the present invention.

[0019] Figure 2 The present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 3 It is a three-dimensional diagram from another angle of the present invention.

[0021] Figure 4 It is a front view of the present invention.

[0022] Figure 5 It is a side view of the grinding table of the present invention.

[0023] Figure 6 It is a top view of the grinding table of the present invention.

[0024] Figure 7 It is a three-dimensional diagram of the slide of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure inside the protective shell of the present invention.

[0026] Fig. 9 It is a side sectional view of the positioning ring of the present invention.

[0027] Fig.10 It is an internal front view of the positioning ring of the present invention.

[0028] Reference numerals: 10. Support; 11. Central axis; 111. Magnet; 112. Axial groove; 12. Guide rod; 13. Protective shell; 20. Positioning assembly; 21. Positioning ring; 211. Annular cavity; 212. Cover plate; 213. Mounting seat; 22. Positioning plate; 221. Radial rod; 30. Pushing assembly; 31. Threaded rod; 311. Slide; 32. Driven bevel gear; 321. Connecting rod; 33. Active bevel gear; 40. Transmission mechanism; 41. Transmission gear; 42. Driven gear ring; 50. Adjustment mechanism; 51. Sleeve; 511. Magnetic ring; 52. Adjustment Gear; 53, adjusting gear ring; 60, grinding table; 61, socket; 62, adjusting slot; 70, grinding mechanism; 71, rotating wheel; 72, supporting wheel; 73, grinding belt; 731, belt body; 732, grinding layer; 74, tension assembly; 741, slide; 742, tension wheel; 743, adjusting bolt; 80, driving mechanism; 81, ring sleeve; 811, limit block; 82, driving wheel; 83, first driven wheel; 84, first transmission belt; 90, transverse mechanism; 91, lead screw; 92, threaded sleeve; 93, second driven wheel; 94, second transmission belt. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 10 As shown, the grinding device for cable insulating sleeve of the present invention comprises a support 10, a central axis 11, a positioning assembly 20, a transmission mechanism 40, an adjustment mechanism 50, a grinding table 60, a grinding mechanism 70, a driving mechanism 80 and a transverse movement mechanism 90. The central axis 11 is rotatably assembled inside the support 10, and a motor (not shown in the figure) is arranged at the end of the central axis 11 to drive it to rotate. There are a plurality of positioning assemblies 20 evenly distributed in the support 10 in an annular shape, and a pushing assembly 30 is arranged in each positioning assembly 20. Under the action of the adjustment mechanism 50, the positioning assembly 20 can be operated to fix the insulating sleeve. The transmission mechanism 40 is arranged between the central axis 11 and the positioning assembly 20, and can drive the insulating sleeve to rotate when the central axis 11 rotates. The grinding mechanism 70 is arranged on the grinding table 60, and can operate with the rotation of the central axis 11 under the action of the driving mechanism 80 to grind the insulating sleeve, and the grinding table 60 is driven to move by the transverse movement mechanism 90 during grinding, thereby realizing mobile grinding.

[0031] refer to Figure 1 , Figure 3 as well as Figure 8Each positioning assembly 20 includes a positioning ring 21 and a plurality of positioning plates 22. The positioning ring 21 is rotatably assembled inside the support 10. The plurality of positioning plates 22 are evenly distributed in a ring shape in the middle of the positioning ring 21 and can move along the radial direction of the positioning ring 21, and then gather toward the center of the positioning ring 21 to clamp and fix the insulating sleeve.

[0032] refer to Fig. 9 and Fig.10 An annular cavity 211 is provided inside the positioning ring 21 along its circumferential direction. A cover plate 212 is rotatably mounted inside the annular cavity 211 for sealing the annular cavity 211 . A plurality of mounting seats 213 are provided inside the annular cavity 211 , and correspond one to one with the plurality of positioning plates 22 .

[0033] refer to Fig. 9 and Fig.10 The pushing assembly 30 includes a threaded rod 31, a driven bevel gear 32 and a driving bevel gear 33. There are multiple threaded rods 31 and multiple driven bevel gears 32. The multiple threaded rods 31 are respectively threadedly connected to the multiple mounting seats 213, and the multiple threaded rods 31 are respectively rotatably connected to the multiple positioning plates 22. The multiple driven bevel gears 32 are respectively arranged at the ends of the multiple threaded rods 31 and rotatably assembled in the annular cavity 211, which can drive the threaded rods 31 to rotate when rotating, so that the threaded rods 31 move in the mounting seats 213, and push the positioning plate 22 to move along the radial direction of the positioning ring 21. The driving bevel gear 33 is coaxially fixed in the cover plate 212. The cover plate 212 is provided with a plurality of driven bevel gears 32 meshing with the driving bevel gear 33, so that when the cover plate 212 rotates, the driving bevel gear 33 is driven to rotate, so that the plurality of driven bevel gears 32 rotate synchronously, and the plurality of threaded rods 31 push the positioning plates 22 at their respective ends to move synchronously toward the center of the positioning ring 21, so as to fix the insulating sleeve. A radial rod 221 is fixedly connected to each positioning plate 22, and the radial rod 221 is slidably arranged in the annular cavity 211 along the radial direction of the positioning ring 21, so as to limit the positioning plate 22 so that the positioning plate 22 will not rotate with the threaded rod 31.

[0034] A sliding groove 311 is opened on the threaded rod 31 along its axial direction, and a connecting rod 321 is fixedly connected to the driven bevel gear 32, and the end of the connecting rod 321 away from the driven bevel gear 32 is slidably connected in the sliding groove 311, so that when the driven bevel gear 32 rotates, the connecting rod 321 pushes the threaded rod 31 to rotate, and the connecting rod 321 slides in the sliding groove 311, so that the threaded rod 31 can move in the mounting seat 213 when rotating, and then drive the positioning plate 22 to move.

[0035] refer to Figure 8The transmission mechanism 40 includes a transmission gear 41 and a driven gear ring 42. The transmission gear 41 is fixedly mounted on the central shaft 11. There are multiple driven gear rings 42, which are coaxially fixed on multiple positioning rings 21 of the positioning assemblies 20. The multiple driven gear rings 42 are all meshed with the transmission gear 41. When the central shaft 11 rotates, the transmission gear 41 can drive the driven gear rings 42 to rotate, so that the multiple positioning rings 21 can drive the insulating sleeve to rotate at the same time. A protective shell 13 is fixedly mounted on the support 10, and the protective shell 13 is located on the outside of the transmission gear 41 and the driven gear ring 42, which can shield the transmission gear 41 and the driven gear ring 42 to prevent them from being collided during grinding.

[0036] refer to Figure 1-Figure 4 The adjustment mechanism 50 includes a sleeve 51, an adjustment gear 52 and an adjustment gear ring 53. The sleeve 51 is sleeved outside the central axis 11 and can rotate and slide outside the central axis 11. The adjustment gear 52 is coaxially fixed on the sleeve 51. There are multiple adjustment gear rings 53, which are coaxially fixed on the outer sides of the cover plates 212 of multiple positioning rings 21 (i.e., on the side outside the annular cavity 211). The multiple adjustment gear rings 53 are all meshed with the adjustment gear 52. The adjustment gear 52 is driven to rotate by the sleeve 51, pushing the multiple adjustment gear rings 53. Synchronous rotation causes multiple cover plates 212 to rotate simultaneously, multiple positioning components 20 to operate synchronously, and multiple insulating sleeves to be fixed at the same time, so as to facilitate the grinding of multiple insulating sleeves with the same diameter. The sleeve 51 is pulled to slide outside the central axis 11 away from the support 10, so that the adjusting gear 52 is separated from the adjusting gear ring 53, and then the adjusting gear ring 53 is turned to drive the cover plate 212 to rotate, so that each positioning component 20 operates separately, and each insulating sleeve is fixed separately, so as to facilitate the fixed grinding of multiple insulating sleeves with different diameters.

[0037] A magnetic ring 511 is fixedly mounted on the sleeve 51, and a magnet 111 located on one side of the sleeve 51 is fixedly mounted on the central axis 11. The magnetic ring 511 and the magnet 111 are kept at a suitable distance from each other when the adjusting gear 52 and the adjusting gear ring 53 are meshed with each other, and will not be attracted to each other. When the sleeve 51 is away from the support 10 to separate the adjusting gear 52 and the adjusting gear ring 53, the magnetic ring 511 approaches the magnet 111 and is attracted to each other, thereby preventing the sleeve 51 from rotating and slipping on the central axis 11 at will.

[0038] refer to Figure 1 and Figure 3The grinding table 60 is vertically arranged outside the central axis 11, and a plurality of sockets 61 are provided on the grinding table 60. The plurality of sockets 61 correspond to the plurality of positioning rings 21 one by one, and are coaxially arranged with each other, so that the insulating sleeve can pass through the sockets 61 and the positioning rings 21 at the same time. An adjustment groove 62 located between two adjacent sockets 61 is provided inside the grinding table 60. A guide rod 12 is laterally fixed on the support 10, and the grinding table 60 is slidably assembled outside the guide rod 12, so that the grinding table 60 can move relative to the support 10 for easy mobile grinding.

[0039] refer to Figure 1 and Figure 5 The grinding mechanism 70 includes a rotating wheel 71, a supporting wheel 72 and a grinding belt 73. The rotating wheel 71 has multiple rotating wheels 71 that are rotatably assembled on the grinding table 60. The supporting wheel 72 has two symmetrically distributed on both sides of the adjusting groove 62 and is rotatably connected to the grinding table 60. The grinding belt 73 is mounted between the rotating wheel 71 and the supporting wheel 72, and passes through the side of each insertion hole 61 in turn, so that after the insulating sleeve passes through the insertion hole 61, the grinding belt 73 can be attached to the surface of the insulating sleeve. When the rotating wheel 71 rotates, it can drive the grinding belt 73 to rotate between the rotating wheel 71 and the supporting wheel 72, and then grind the surface of the insulating sleeve.

[0040] refer to Figure 4 and Figure 6 The polishing belt 73 consists of a belt body 731 and a polishing layer 732. The polishing layer 732 is located on the side of the belt body 731 away from the rotating wheel 71, and the width of the polishing layer 732 is smaller than the width of the belt body 731. When the rotating wheel 71 drives the belt body 731 to rotate, the polishing layer 732 contacts the insulating sleeve to polish the surface of the insulating sleeve.

[0041] refer to Figure 1 , Figure 5 , Figure 6 as well as Figure 7A tension assembly 74 located in the adjustment groove 62 is provided on one side of the belt body 731, which can adjust the tension of the belt body 731 so that the polishing layer 732 is close to the surface of the insulating sleeve. The tension assembly 74 includes a slide 741, a tension wheel 742 and an adjustment bolt 743. The slide 741 is located on one side of the belt body 731 and is slidably assembled inside the adjustment groove 62. The tension wheel 742 is rotatably connected to the slide 741, and the side of the belt body 731 close to the polishing layer 732 is mounted on the tension wheel 742. The adjustment bolt 743 is rotatably assembled in the adjustment groove 62. The adjusting bolt 743 is threadedly connected to the slide 741, so that when it rotates, it can push the slide 741 to move in the adjusting groove 62, and then change the distance between the tension wheel 742 and the support wheel 72, so as to adjust the tension of the grinding belt 73. When the tension wheel 742 is close to the support wheel 72, the grinding belt 73 is gradually relaxed, so that the grinding belt 73 can be pushed to the side so that the insulating sleeve can be inserted into the socket 61. When the tension wheel 742 is away from the support wheel 72, the grinding belt 73 is gradually tightened, and the grinding layer 732 is close to the surface of the insulating sleeve to improve the grinding effect.

[0042] refer to Figure 3 and Figure 6 The driving mechanism 80 includes a ring sleeve 81, a driving wheel 82, a first driven wheel 83 and a first transmission belt 84. The ring sleeve 81 is sleeved on the outside of the central axis 11 and is rotatably connected to the grinding table 60, and can slide with a single degree of freedom along the axial direction of the central axis 11. The driving wheel 82 is fixedly mounted on the ring sleeve 81. The first driven wheel 83 is located on one side of the driving wheel 82 and is fixed to one of the rotating wheels 71. The first transmission belt 84 is mounted between the driving wheel 82 and the first driven wheel 83, so that the central axis 11 drives the ring sleeve 81 to rotate when it rotates. The ring sleeve 81 drives the rotating wheel 71 to rotate through the driving wheel 82, the first driven wheel 83 and the first transmission belt 84, so that the grinding belt 73 rotates and then grinds the insulating sleeve.

[0043] refer to Figure 1 and Figure 5 The side wall of the central axis 11 is provided with an axial groove 112 along its axial direction, and a limit block 811 is fixedly installed on the inner wall of the ring sleeve 81, and the limit block 811 is slidably assembled inside the axial groove 112. When the limit block 811 slides in the axial groove 112, the ring sleeve 81 can be driven to rotate when the central axis 11 rotates.

[0044] refer to Figure 4The transverse movement mechanism 90 includes a lead screw 91, a threaded sleeve 92, a second driven wheel 93 and a second transmission belt 94. The lead screw 91 is laterally fixed on the support 10. The threaded sleeve 92 is threadedly connected to the outside of the lead screw 91 and is rotatably connected to the grinding table 60. The second driven wheel 93 is fixedly installed at the end of the threaded sleeve 92. The second transmission belt 94 is mounted between the driving wheel 82 and the second driven wheel 93. When the driving wheel 82 rotates to drive the grinding mechanism 70 to operate, the second transmission belt 94 can drive the second driven wheel 93 and the threaded sleeve 92 to rotate, so that the threaded sleeve 92 rotates on the lead screw 91, and then drives the grinding table 60 to slide along the guide rod 12 to achieve mobile grinding.

[0045] Working principle: the insulating sleeve is passed through the positioning ring 21 and the insertion hole 61 of the grinding table 60, and the sleeve 51 is rotated to make the adjusting gear 52 push the multiple adjusting gear rings 53 to rotate, so that the cover plates 212 in the multiple positioning rings 21 rotate synchronously, and the active bevel gear 33 pushes the multiple driven bevel gears 32 in the annular cavity 211 to rotate, and the connecting rod 321 drives the threaded rod 31 to rotate and slide in the mounting seat 213, so that the multiple positioning plates 22 in each positioning ring 21 are gathered to the middle at the same time to fix the insulating sleeve, and then the adjusting bolt 743 is rotated to push the slide 741 to slide along the adjusting groove 62, and the tension wheel 742 pulls the belt body 731 to gradually tighten the grinding belt 73, so that the grinding layer 732 is firmly and tightly attached to the surface of the insulating sleeve.

[0046] The central shaft 11 is driven to rotate, so that the central shaft 11 drives the ring sleeve 81 and the driving wheel 82 to rotate, and under the cooperation of the first driven wheel 83 and the first transmission belt 84, one of the rotating wheels 71 is driven to rotate, and the grinding belt 73 is driven to rotate, so that the insulating sleeves in multiple positioning rings 21 are polished at the same time.

[0047] When the driving wheel 82 rotates, the second driven wheel 93 cooperates with the second transmission belt 94 to drive the threaded sleeve 92 to rotate and then move along the lead screw 91, driving the grinding table 60 and the grinding belt 73 to perform mobile grinding. When the central axis 11 rotates, it drives the transmission gear 41 to push the multiple driven gear rings 42 to rotate, so that the multiple positioning rings 21 rotate synchronously, so that the grinding belt 73 rotates during mobile grinding, and then performs comprehensive grinding.

[0048] When the diameters of the insulating sleeves to be polished are different, the sleeve 51 is pulled on the central axis 11 to move it away from the support 10, so that the adjusting gear 52 is separated from the adjusting gear ring 53, and then the adjusting gear ring 53 is moved to drive the cover plate 212 to rotate. The insulating sleeves can be fixed individually by each positioning ring 21, and then all the insulating sleeves are moved and polished at the same time by the polishing belt 73.

[0049] In the present invention, the tensioning force of the grinding belt 73 is adjusted by the tension component 74, so that the grinding belt 73 can be tightly attached to the outside of all insulating sleeves at the same time, and the grinding belt 73 moves by itself during rotation, and the insulating sleeve itself rotates to cooperate with the grinding belt 73, so as to realize the synchronous grinding of multiple insulating sleeves, improve the grinding efficiency, and speed up the production progress; through the adjustment mechanism 50, the positioning component 20 can selectively fix the insulating sleeve in different operation modes, so that all the positioning components 20 can operate synchronously and fix the insulating sleeve at the same time, so as to facilitate the synchronous grinding of multiple insulating sleeves with the same diameter, and each positioning component 20 can also operate separately to fix the insulating sleeve, so as to facilitate the synchronous grinding of multiple insulating sleeves with different diameters. The applicability of the equipment is stronger, and the use effect of the equipment is effectively improved.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A grinding device for a cable insulating sleeve, comprising a support (10), a central shaft (11) and a grinding table (60), wherein the central shaft (11) is rotatably mounted inside the support (10), and characterized in that: The support (10) is internally rotatably equipped with a plurality of positioning rings (21) which can rotate within the support (10) along with the rotation of the central shaft (11); a plurality of positioning plates (22) are evenly distributed in a ring shape in the middle of the positioning ring (21) and can move along the radial direction of the positioning ring (21); A threaded rod (31) is rotatably connected to each positioning plate (22), and the threaded rod (31) is threadedly connected to the positioning ring (21). A driven bevel gear (32) is provided at the end of each threaded rod (31) to push the threaded rod (31) to rotate and slide in the positioning ring (21). A driving bevel gear (33) is also provided in the positioning ring (21) to mesh with a plurality of driven bevel gears (32); A plurality of insertion holes (61) are provided inside the grinding table (60), and the insertion holes (61) correspond to the positioning ring (21) one by one and are coaxially arranged. A grinding belt (73) is provided on the grinding table (60), and the grinding belt (73) passes through the side of each insertion hole (61) in sequence and can rotate with the rotation of the central axis (11). The grinding table (60) can move along the axial direction of the central axis (11) when the grinding belt (73) rotates. A tension component (74) is provided on one side of the grinding belt (73) for adjusting its tension.

2. The grinding device for cable insulation sleeve according to claim 1, characterized in that: The upper rotating part of the grinding table (60) is equipped with a plurality of rotating wheels (71) and two supporting wheels (72); a grinding belt (73) is mounted between the rotating wheels (71) and the supporting wheels (72) and can rotate under the rotation of the rotating wheels (71); the grinding belt (73) is composed of a belt body (731) and a grinding layer (732); the grinding layer (732) is located on a side of the belt body (731) away from the rotating wheels (71); and the width of the grinding layer (732) is smaller than the width of the belt body (731).

3. The grinding device for cable insulation sleeve according to claim 2, characterized in that: An adjusting groove (62) is provided inside the grinding table (60), and two supporting wheels (72) are symmetrically distributed on both sides of the adjusting groove (62). The tension assembly (74) comprises a slide table (741), a tension wheel (742) and an adjusting bolt (743). The slide table (741) is located on one side of the belt body (731) and is slidably assembled inside the adjusting groove (62). The tension wheel (742) is rotatably connected inside the slide table (741), and a side of the belt body (731) close to the grinding layer (732) is mounted on the tension wheel (742). The adjusting bolt (743) is rotatably assembled inside the adjusting groove (62) and is threadedly connected to the slide table (741).

4. The grinding device for cable insulation sleeve according to claim 1, characterized in that: The central shaft (11) is provided with an annular sleeve (81) on the outside thereof, which can slide along the axial direction of the central shaft (11), and the annular sleeve (81) is rotatably connected to the inside of the grinding table (60), a driving wheel (82) is fixedly mounted on the annular sleeve (81), a first driven wheel (83) is fixedly mounted on one of the rotating wheels (71), and a first transmission belt (84) is mounted between the driving wheel (82) and the first driven wheel (83).

5. The grinding device for cable insulation sleeve according to claim 4, characterized in that: A lead screw (91) is transversely fixed on the support (10); a threaded sleeve (92) is connected to the external thread of the lead screw (91); the threaded sleeve (92) is rotatably connected to the grinding table (60); a second driven wheel (93) is fixedly mounted on the end of the threaded sleeve (92); and a second transmission belt (94) is mounted between the second driven wheel (93) and the driving wheel (82).

6. The grinding device for cable insulation sleeve according to claim 1, characterized in that: An annular cavity (211) is provided inside the positioning ring (21) along its circumferential direction. The driven bevel gear (32) is rotatably mounted in the annular cavity (211). A cover plate (212) is rotatably mounted in the annular cavity (211). The driving bevel gear (33) is coaxially fixed on the inner side of the cover plate (212). A plurality of mounting seats (213) are provided inside the annular cavity (211). The threaded rod (31) is threadedly connected in the mounting seats (213).

7. The grinding device for cable insulation sleeve according to claim 6, characterized in that: The threaded rod (31) is provided with a sliding groove (311) along its axial direction, the driven bevel gear (32) is fixedly connected with a connecting rod (321), and one end of the connecting rod (321) away from the driven bevel gear (32) is slidably connected in the sliding groove (311).

8. The grinding device for cable insulation sleeve according to claim 7, characterized in that: A transmission gear (41) is fixedly mounted on the central shaft (11), a plurality of positioning rings (21) are coaxially fixed with driven gear rings (42), and the plurality of driven gear rings (42) are meshed with the transmission gear (41).

9. The grinding device for cable insulation sleeve according to claim 6, characterized in that: The central axis (11) is sleeved with a sleeve (51) on the outside, and the sleeve (51) is capable of rotating and sliding outside the central axis (11); an adjusting gear (52) is coaxially fixed on the sleeve (51); an adjusting gear ring (53) is coaxially fixed on the outside of the cover plates (212) of the plurality of positioning rings (21); and the plurality of adjusting gear rings (53) are meshed with the adjusting gear (52).

10. The grinding device for cable insulation sleeve according to claim 9, characterized in that: A magnetic attraction ring (511) is fixedly mounted on the sleeve (51), and a magnet (111) located on one side of the sleeve (51) is fixedly mounted on the central shaft (11).

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