Single strip polishing apparatus

Abstract

The application discloses a single polishing belt polishing device, which comprises a shell, a first rotating roller, a second rotating roller, a polishing belt and two tension rollers installed in the shell cavity of the shell, the polishing belt is arranged around the surfaces of the first rotating roller and the second rotating roller in a manner capable of being driven to rotate in a direction, the polishing belt has opposite first and second layers in the rotating direction, the two tension rollers are respectively close to the inner sides of the first rotating roller and the second rotating roller and are arranged in the shell in a manner capable of being driven to relatively approach or move away from the surface of the first layer, the surface of the first layer is the side of the first layer away from the second layer, the first layer can be rotated and tensioned so that the first layer and the second layer between the two tension rollers are kept parallel and a predetermined polishing gap is kept, and then the opposite inner sides of the first layer and the second layer simultaneously polish the opposite two surfaces of a product, so that the polishing efficiency is high and the equipment cost is low.

Description

Technical Field

[0001] This invention relates to the field of polishing belt equipment technology, and more particularly to a single polishing belt polishing device. Background Technology

[0002] In a polishing belt polishing machine, the surface of a product is typically polished by using a polishing belt, which results in relatively low polishing efficiency.

[0003] In addition, there are also methods that use two independently operating polishing belts to simultaneously grind and polish two products or two surfaces of a product. This requires two polishing belts and corresponding drive equipment, which not only takes up a lot of space but also has high equipment costs and is difficult to maintain later. Summary of the Invention

[0004] This application provides a single-strip polishing belt polishing device, which, by means of the rotational cooperation between the first rotating roller, the second rotating roller and the polishing belt, and by means of the specific tensioning design of the two tensioning rollers, can polish two opposite surfaces of a product simultaneously through a single polishing belt, thereby significantly improving work efficiency without increasing equipment costs.

[0005] This application provides a single-strip polishing device, including a housing and a first rotating roller, a second rotating roller, a polishing belt, and two tension rollers installed within the housing cavity. The polishing belt is wound around the surfaces of the first and second rotating rollers in a directionally rotatable manner. The polishing belt has opposing first and second layers in the rotation direction. The two tension rollers are respectively close to the inner sides of the first and second rotating rollers and are arranged within the housing in a directionally rotatable manner, moving relatively close to or away from the surface of the first layer. The surface of the first layer is the side of the first layer away from the second layer, which can rotate and tension the first layer so that the first layer and the second layer between the two tension rollers remain parallel and maintain a predetermined polishing gap. Thus, the opposing inner surfaces of the first and second layers are polished simultaneously.

[0006] In one possible implementation, the cavity is provided with an inner housing that connects the two tensioning rollers. The bottom of the inner housing is parallel to the first layer and is connected to a first sliding platform. The bottom of the first sliding platform is flush with the bottom of the tensioning rollers so that it can slide against the surface of the first layer away from the second layer when the tensioning rollers tension the first layer.

[0007] In one possible implementation, a second sliding stage is also fixedly disposed inside the shell cavity, and the second sliding stage abuts against the surface of the second layer away from the first layer in a sliding engagement manner.

[0008] In one possible implementation, the cavity is provided with a telescopic element and a guide rail extending in a direction perpendicular to the first layer. The inner housing is provided with a slider that slides with the guide rail. The telescopic element is located on the side of the inner housing away from the first layer, and the telescopic axis of the telescopic element is vertically fixedly connected to the inner housing.

[0009] In one possible implementation, the two tensioning rollers are defined as a first tensioning roller and a second tensioning roller, respectively. A first telescopic element and a second telescopic element are symmetrically installed inside the inner housing. The first telescopic shaft of the first telescopic element passes vertically through the inner housing and is connected to a first mounting bracket. The first tensioning roller is rotatably installed in the first mounting bracket. The second telescopic shaft of the second telescopic element passes vertically through the inner housing and is connected to a second mounting bracket. The second tensioning roller is rotatably installed in the second mounting bracket.

[0010] In one possible implementation, the first mounting bracket and the second mounting bracket are respectively connected to a first support rod and a second support rod via a connecting block. The first support rod is located between the first tension roller and the first rotating roller, and the second support rod is located between the second tension roller and the second rotating roller. The first support rod and the second support rod are symmetrically supported on the inner side of the first layer near the second layer, so as to increase the contact area between the first layer and the first tension roller and the second tension roller, respectively.

[0011] In one possible implementation, guide rails are symmetrically arranged on both sides of the bottom of the inner housing, near the first and second telescopic elements. The extension direction of the guide rails is the same as the extension direction of the first and second telescopic shafts. The first and second mounting brackets are symmetrically and vertically connected to a first guide shaft and a second guide shaft at their ends in a direction perpendicular to the extension direction of the guide rails. The first and second guide shafts penetrate the inner housing vertically and are provided with sliders at their ends that slide with the guide rails. The inner housing is equipped with sealing sleeves for sliding with the first and second guide shafts.

[0012] In one possible implementation, a geared motor is also provided inside the shell cavity. The output shaft of the geared motor is fixedly sleeved with a first gear. The roller shaft of the second rotating roller is coaxially sleeved with a second gear and a third gear. The first gear and the second gear are connected by a first transmission belt. The roller shaft of the first rotating roller is coaxially sleeved with a fourth gear. The third gear and the fourth gear are connected by a second transmission belt.

[0013] In one possible implementation, a first tensioning pulley and a second tensioning pulley are also provided inside the housing cavity. The first tensioning pulley and the second tensioning pulley are symmetrically arranged on both sides of the transmission direction of the second transmission belt in a manner that allows them to be relatively close to or far apart from each other.

[0014] In one possible implementation, rotating disks are symmetrically arranged on both sides of the polishing gap inside the shell cavity. A carrier disk is connected between the two rotating disks in an engaging manner to drive the carrier disk to rotate in an oriented manner. The carrier disk is close to the middle position of the polishing gap in a manner parallel to the first layer. The thickness of the carrier disk is less than the thickness of the product to be polished, and the carrier disk has a limiting hole for limiting the product to be polished.

[0015] Beneficial effects: Compared with the prior art, the single polishing belt polishing device provided in this application, based on the first and second rotating rollers driving the polishing belt to rotate, uses two tensioning rollers to simultaneously tension the first layer inside the first and second rotating rollers, so that the first and second layers can remain parallel and maintain a predetermined polishing gap. It can polish two opposite surfaces of the product simultaneously within the polishing gap formed by the first and second layers, achieving the purpose of polishing two surfaces of the product simultaneously with a single polishing belt. This not only effectively improves work efficiency, but also reduces equipment costs, reduces equipment space occupation, and is easy to maintain later.

[0016] During the polishing process through the polishing gap, the first and second sliding tables can provide additional sliding support, which can further ensure the polishing position of the first and second layers while the tensioning roller is tensioning the first layer, thereby ensuring the polishing effect.

[0017] Based on the sliding cooperation of the slider and guide rail, the position of the inner shell relative to the first layer, i.e. the tensioning position of the two tension rollers, can be flexibly adjusted by the telescopic element. The product can be easily picked up and put down by increasing the gap between the two. In addition, the design that the relative distance between the two tension rollers can be flexibly adjusted means that even if the position of the tension rollers relative to the first layer changes, the polishing belt can still be tensioned by appropriately adjusting the distance between the two tension rollers. In this way, the polishing gap can be flexibly adjusted to polish products of different thicknesses, making it more widely applicable.

[0018] By adjusting the positions of the first and second tensioning pulleys relative to the second transmission belt, the second transmission belt can be effectively tensioned to prevent belt loosening due to prolonged use, thereby ensuring the reliability of the transmission.

[0019] The rotating disk drives the carrier disk to rotate, which can polish products that are kept in a rotating state, thus further improving the polishing effect.

[0020] These and other objects, features and advantages of the present invention will become fully apparent from the following detailed description. Attached Figure Description

[0021] Figure 1 A three-dimensional structural schematic diagram of the single-strip polishing device of this application is shown.

[0022] Figure 2 A partial structural schematic diagram of the single-strip polishing device of this application is shown.

[0023] Figure 3 A partial structural schematic diagram of the single-strip polishing device of this application is shown.

[0024] Figure 4 A partial structural schematic diagram of the single-strip polishing device of this application is shown.

[0025] Figure 5 A partial structural diagram of the carrier disk in this application is shown.

[0026] Figure 6 A partial rear view of the polishing apparatus for a single polishing belt according to this application is shown.

[0027] Figure 7 This application shows Figure 6 A magnified structural diagram of part A in the middle. Detailed Implementation

[0028] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0029] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0030] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0031] refer to Figures 1 to 7 This application provides a single-strip polishing device, comprising a housing 10 and a first rotating roller 20, a second rotating roller 30, a polishing belt 40, and two tension rollers 50 installed within the housing cavity of the housing 10. The polishing belt 40 is wound around the surfaces of the first rotating roller 20 and the second rotating roller 30 in a directionally rotatable manner. The polishing belt 40 has opposing first layers 41 and second layers 42 in the rotation direction. The two tension rollers 50 are respectively located close to the inner sides of the first rotating roller 20 and the second rotating roller 30, and are directionally driven to be relatively close to or away from the surface of the first layer 41. Placed within the housing 10, wherein the surface of the first layer 41 is the side of the first layer 41 away from the second layer 42, so that the first layer 41 can be rotated and tensioned so that the first layer 41 and the second layer 42 between the two tension rollers 50 remain parallel and maintain a predetermined polishing gap 401, thereby polishing the two opposing surfaces of the product simultaneously through the opposing inner surfaces of the first layer 41 and the second layer 42, thereby achieving the purpose of polishing the two opposing surfaces of the product simultaneously through a polishing belt 40, which can not only effectively improve polishing efficiency, but also reduce equipment costs, reduce equipment space occupation, and is easy to maintain.

[0032] Generally, the first layer 41 and the second layer 42 can be arranged vertically, with the first layer 41 located above the second layer 42. Alternatively, the first layer 41 and the second layer 42 can be arranged in a parallel or vertical arrangement, which does not affect the simultaneous polishing of the two surfaces of the product within the polishing gap 401 formed by the first layer 41 and the second layer 42.

[0033] In one embodiment, an inner housing 60 is provided within the cavity, connecting the two tensioning rollers 50. The bottom of the inner housing 60 is parallel to the first layer 41 and is connected to a first sliding platform 61. Simultaneously, the bottom of the first sliding platform 61 is flush with the bottom of the tensioning roller 50, so that when the tensioning roller 50 tensions the first layer 41, it can slide against the surface of the first layer 41 away from the second layer 42. This provides additional sliding support on top of the tensioning roller 50 tensioning the first layer 41, ensuring the accuracy of the position of the first layer 41 and thus ensuring the polishing effect.

[0034] More preferably, a second sliding stage 62 is also fixedly disposed within the cavity. The second sliding stage 62 slides against the surface of the second layer 42 away from the first layer 41, thereby providing additional sliding support on top of the tensioning roller 50 tensioning the second layer 42, ensuring the accuracy of the position of the second layer 42, and thus ensuring the polishing effect.

[0035] In one embodiment, the cavity is provided with a telescopic element 70 and a guide rail 71 extending in a direction perpendicular to the first layer 41. The inner housing 60 is provided with a slider that slides with the guide rail 71. The telescopic element 70 is located on the side of the inner housing 60 away from the first layer 41, and the telescopic shaft of the telescopic element 70 is vertically fixedly connected to the inner housing 60. This allows the inner housing 60 and the tension roller 50 connected to the inner housing 60 to move up and down based on the sliding engagement of the guide rail 71 and the slider. When moving upward, it is convenient to place the product into the polishing gap 401 and remove the product from the polishing gap 401. When moving downward, it can maintain a predetermined polishing gap 401 between the first layer 41 and the second layer 42 to polish the product.

[0036] The telescopic element 70 can be a cylinder.

[0037] It is worth mentioning that during the polishing process, such as for mobile phone glass covers, products of different specifications may have different thicknesses, and the thickness difference is not very large, possibly only 0.1-5.0 mm. With the first rotating roller 20, the second rotating roller 30, and the tension roller 50 working together, only the polishing belt 40 can be tensioned, maintaining a defined polishing gap 401 between the first layer 41 and the second layer 42. This means only products of one thickness can be polished, resulting in a limited applicability. Therefore, more preferably, the two tension rollers 50 are defined as the first tension roller 51 and the second tension roller 52, respectively. Simultaneously, a first telescopic element 63 and a second telescopic element 64 are symmetrically installed inside the inner housing 60. The first telescopic shaft 631 of the first telescopic element 63 vertically penetrates the inner housing 60 and is connected to a first mounting bracket 65. The first tension roller 51 is rotatably mounted within the first mounting bracket 65. The second telescopic element 64... The second telescopic shaft 641 vertically penetrates the inner housing 60 and is connected to the second mounting bracket 66. The second tension roller 52 is rotatably mounted within the second mounting bracket 66. This allows for adjustments to the distance between the two tension rollers 50 for products of varying thicknesses, such as thinner products. Simultaneously, the telescopic element 70 drives the inner housing 60 and the tension roller 50 closer to the second layer 42. This reduces the polishing gap 401 for thinner products without compromising the tension of the polishing strip 40. During tensioning, the second sliding table 62 and the second layer 42 remain in their positions, while the tension roller 50 and the first sliding table 61 move downwards synchronously. Correspondingly, for slightly thicker products, the distance between the two tension rollers 50 can be increased, and the telescopic element 70 drives the tension roller 50 upwards to increase the polishing gap 401. This method is very convenient, has a wider range of applications, and can significantly reduce polishing costs.

[0038] Generally, both the first telescopic element 63 and the second telescopic element 64 are telescopic cylinders.

[0039] In one embodiment, the first mounting bracket 65 and the second mounting bracket 66 are respectively connected to a first support rod 68 and a second support rod 69 via a connecting block 67. The first support rod 68 is located between the first tension roller 51 and the first rotating roller 20, while the second support rod 69 is located between the second tension roller 52 and the second rotating roller 30. The first support rod 68 and the second support rod 69 are symmetrically supported on the bottom surface of the first layer 41 to increase the contact area between the first layer 41 and the first tension roller 51 and the second tension roller 52, respectively. During the rotation of the polishing belt 40 driven by the first rotating roller 20 and the second rotating roller 30, the first support rod 68 and the second support rod 69 support the first layer 41 at the bottom in a rotatable manner. This allows the first layer 41 to adhere more closely to the surfaces of the first tensioning roller 51 and the second tensioning roller 52. As a result, the friction between the first tensioning roller 51 and the second tensioning roller 52 and the polishing belt 40 is increased by increasing the contact area. This makes the rotation of the polishing belt 40 more stable, further enhancing the tensioning effect and support strength of the polishing belt 40, thereby enhancing the polishing effect on the product.

[0040] In one embodiment, guide rails 632 are symmetrically arranged on both sides of the bottom of the inner housing 60, on both sides of the first telescopic element 63 and the second telescopic element 64. The extending direction of the guide rails 632 is the same as the extending direction of the first telescopic shaft 631 and the second telescopic shaft 641. At the same time, the first mounting bracket 65 and the second mounting bracket 66 are symmetrically and vertically connected to the first guide shaft 651 and the second guide shaft 661 at their ends in the direction perpendicular to the extending direction of the guide rails 632, respectively. The first guide shaft 651 and the second guide shaft 661 penetrate the inner housing 60 vertically and are provided with sliders 633 at their ends that slide in cooperation with the guide rails 632. Thus, the stability of the movement of the tension roller 50 and the accuracy of the movement direction can be further ensured based on the cooperation relationship between the guide rails 632 and the sliders 633. In addition, the inner housing 60 is equipped with a sealing sleeve 634 for sliding engagement with the first guide shaft 651 and the second guide shaft 661, thereby improving the sealing performance of the inner housing 60. The inner housing 60 effectively protects the first telescopic element 63, the second telescopic element 64, and the corresponding slider 633 and guide rail 632, preventing dust, debris, etc. from entering and affecting the service life and working stability of the internal components.

[0041] In one embodiment, combined Figure 6 and Figure 7A geared motor 80 is also installed inside the housing cavity. The output shaft of the geared motor 80 is fixedly fitted with a first gear 81, while the roller shaft of the second rotating roller 30 is coaxially fitted with a second gear 31 and a third gear. The first gear 81 and the second gear 31 are connected by a first transmission belt 82. In addition, the roller shaft of the first rotating roller 20 is coaxially fitted with a fourth gear 21, and the third gear and the fourth gear 21 are connected by a second transmission belt 32. Thus, based on the gear meshing relationship, a geared motor 80 can drive two tensioning rollers 50 to rotate synchronously, resulting in high transmission accuracy and good transmission stability.

[0042] Considering that belts may loosen over time during belt drive, especially if the second drive belt 33 becomes loose, it will directly affect the synchronization of the rotation of the first rotating roller 20 and the second rotating roller 30, thus directly affecting the polishing work. Therefore, preferably, a first tensioning pulley 83 and a second tensioning pulley are also provided in the housing cavity, and the first tensioning pulley 83 and the second tensioning pulley are symmetrically arranged on both sides of the transmission direction of the second drive belt 33 in a manner that allows them to be relatively close to or far apart.

[0043] More preferably, a mounting base 84 is provided inside the housing cavity. The mounting base 84 has multiple rows of vertically arranged positioning holes in the horizontal direction. The first tensioning wheel 83 and the second tensioning wheel are connected to the mounting base 831 through a connecting seat, and screws are fixedly connected to the connecting seat 831. When it is necessary to adjust the position of the first tensioning wheel 83 and the second tensioning wheel, it is only necessary to screw the screws into the different positioning holes. Alternatively, multiple positioning holes distributed in the horizontal direction or evenly distributed can be provided on the mounting base 84 for installation and fixing. Correspondingly, the connecting seat 831 has two rows of vertically extending strip holes 801. When it is necessary to adjust the position, it is only necessary to move the connecting seat 831. After it is moved into place, the connecting seat is tightened onto the mounting base 84 by screws passing through the strip holes 801.

[0044] In one embodiment, rotating disks 91 are symmetrically arranged on both sides of the polishing gap 401 inside the shell cavity. A carrier disk 92 is connected between the two rotating disks 91 in an engaging manner to drive the carrier disk 92 to rotate in a specific direction. At the same time, the carrier disk 92 is close to the middle position of the polishing gap 401 in a manner parallel to the first layer 41, and the thickness of the carrier disk 92 is less than the thickness of the product to be polished. The carrier disk 92 has a limiting hole 901 for limiting the product to be polished. This allows for further improvement of the polishing effect of the product by continuously rotating the product during the polishing process. The product is located in the limiting hole 901, and when the product is initially placed, the bottom of the product abuts against the top of the second layer 42. After the tension roller 50 tensions the polishing belt 40, the first layer 41 and the second layer 42 abut against the upper and lower surfaces of the product, respectively, and the carrier disk 92 is close to the middle position of the product, mainly limiting the product in the rotation direction of the polishing belt 40. The two rotating disks 91 can be driven by motors respectively, or a single motor can be used to drive the two rotating disks to rotate synchronously through the meshing of transmission gears and transmission belts, similar to the way a geared motor drives the first and second rotating rollers to rotate.

[0045] When the polishing gap 401 changes, the second layer 42 remains unchanged, only the height position of the first layer 41 changes. As long as the height of the carrier 92 is less than the height of the product, and the carrier 92 is as close as possible to the second layer 42, the key is that the carrier 92 only limits the product in the rotation direction of the polishing belt 40, and does not affect the polishing of the two surfaces of the product by the first layer 41 and the second layer 42.

[0046] It should be noted that the terms "first, second, third and fourth" used in this application are for descriptive purposes only, do not indicate any order, and should not be construed as indicating or implying relative importance. These terms can be interpreted as names.

[0047] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. A polishing device for a single polishing belt, characterized in that, The device includes a housing and a first rotating roller, a second rotating roller, a polishing belt, and two tensioning rollers installed within the housing cavity. The polishing belt is wound around the surfaces of the first rotating roller and the second rotating roller in a directionally rotatable manner. The polishing belt has opposing first and second layers in the rotation direction. The two tensioning rollers are respectively located close to the inner sides of the first rotating roller and the second rotating roller and are arranged within the housing in a directionally rotatable manner, moving relatively close to or away from the surface of the first layer. The surface of the first layer is the side of the first layer away from the second layer, which is rotatably tensioned to keep the first layer and the second layer between the two tensioning rollers parallel and maintain a predetermined polishing gap. Thus, the opposing inner surfaces of the first layer and the second layer are polished simultaneously through the opposing inner surfaces of the first layer and the second layer. The cavity contains an inner shell that connects the two tensioning rollers. The bottom of the inner shell is parallel to the first layer and is connected to a first sliding table. The bottom of the first sliding table is flush with the bottom of the tensioning rollers so that when the tensioning rollers tension the first layer, they can slide against the surface of the first layer away from the second layer. The cavity is provided with a telescopic element and a guide rail extending in a direction perpendicular to the first layer. The inner shell is provided with a slider that slides with the guide rail. The telescopic element is located on the side of the inner shell away from the first layer, and the telescopic shaft of the telescopic element is vertically fixedly connected to the inner shell.

2. The single-strip polishing belt polishing device as described in claim 1, characterized in that, A second sliding platform is also fixedly disposed inside the shell cavity, and the second sliding platform abuts against the surface of the second layer away from the first layer in a sliding engagement manner.

3. The single-strip polishing belt polishing device as described in claim 1, characterized in that, The two tensioning rollers are defined as a first tensioning roller and a second tensioning roller, respectively. A first telescopic element and a second telescopic element are symmetrically installed inside the inner housing. The first telescopic shaft of the first telescopic element penetrates the inner housing vertically and is connected to a first mounting frame. The first tensioning roller is rotatably installed in the first mounting frame. The second telescopic shaft of the second telescopic element penetrates the inner housing vertically and is connected to a second mounting frame. The second tensioning roller is rotatably installed in the second mounting frame.

4. The single-strip polishing belt polishing device as described in claim 3, characterized in that, The first mounting bracket and the second mounting bracket are respectively connected to a first support rod and a second support rod via connecting blocks. The first support rod is located between the first tension roller and the first rotating roller, and the second support rod is located between the second tension roller and the second rotating roller. The first support rod and the second support rod are symmetrically supported on the inner side of the first layer near the second layer, so as to increase the contact area between the first layer and the first tension roller and the second tension roller, respectively.

5. The single-strip polishing belt polishing device as described in claim 4, characterized in that, The bottom of the inner housing is symmetrically provided with guide rails on both sides of the first telescopic element and the second telescopic element. The extension direction of the guide rails is the same as the extension direction of the first telescopic shaft and the second telescopic shaft. The first mounting bracket and the second mounting bracket are symmetrically and vertically connected to the first guide shaft and the second guide shaft at their ends in the direction perpendicular to the extension direction of the guide rail. The first guide shaft and the second guide shaft penetrate the inner housing vertically and are provided with sliders at their ends that slide with the guide rails. The inner housing is equipped with sealing sleeves for sliding with the first guide shaft and the second guide shaft.

6. The single-strip polishing belt polishing device as described in claim 1, characterized in that, A geared motor is also provided inside the shell cavity. The output shaft of the geared motor is fixedly sleeved with a first gear. The roller shaft of the second rotating roller is coaxially sleeved with a second gear and a third gear. The first gear and the second gear are connected by a first transmission belt. The roller shaft of the first rotating roller is coaxially sleeved with a fourth gear. The third gear and the fourth gear are connected by a second transmission belt.

7. The single-strip polishing belt polishing device as described in claim 6, characterized in that, The cavity is also provided with a first tensioning pulley and a second tensioning pulley, which are symmetrically arranged on both sides of the transmission direction of the second transmission belt in a manner that allows them to be relatively close to or far apart.

8. The single-strip polishing belt polishing device as described in claim 1, characterized in that, Rotary disks are symmetrically arranged on both sides of the polishing gap inside the shell cavity. A carrier disk is connected between the two rotating disks in an meshing manner to drive the carrier disk to rotate in an oriented manner. The carrier disk is close to the middle position of the polishing gap in a manner parallel to the first layer. The thickness of the carrier disk is less than the thickness of the product to be polished, and the carrier disk has a limiting hole for limiting the product to be polished.

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