Abrasive belt polishing machine

Abstract

The invention discloses an abrasive belt polishing machine. The abrasive belt polishing machine comprises a support, an abrasive belt assembly and a power assembly. The abrasive belt assembly comprises a driving wheel, a driven wheel and an abrasive belt, the driving wheel and the driven wheel are both installed on the support, and the abrasive belt is wound around the driving wheel and the driven wheel. The power assembly comprises a motor and a transmission structure connected with the motor, the motor and the transmission structure are both installed on the support, the motor is arranged on the side, away from the driven wheel, of the driving wheel, and the motor is used for driving the transmission structure to drive the driving wheel to move so as to drive the abrasive belt to rotate. Comprising the motor has a high rotating speed and a large rotating speed adjusting range, through the transmission structure, the motor can enable the abrasive belt wound on the driving wheel and the driven wheel to rotate at the high and stable rotating speed, and therefore the polishing efficiency of the abrasive belt polishing machine is improved; and meanwhile, the motor is far away from the driven wheel, so that the inconvenience of machining operation is reduced, and the risk of machining operation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing equipment, in particular to an abrasive belt polisher. Background Art

[0002] In the process of processing and manufacturing, a belt polisher is a common device used to polish and grind the surface of a workpiece. In the related art, the belt speed of the belt polisher is low, resulting in low polishing efficiency, which cannot meet the needs of efficient and fast polishing. In addition, the position of the power component of the belt polisher is easy to interfere with the workpiece to be polished, which brings inconvenience and risks to the processing operation. Summary of the invention

[0003] The invention provides an abrasive belt polishing machine.

[0004] The abrasive belt polishing machine according to the embodiment of the present invention comprises:

[0005] Bracket;

[0006] an abrasive belt assembly, the abrasive belt assembly comprising a driving wheel, a driven wheel and an abrasive belt, the driving wheel and the driven wheel are both mounted on the bracket, and the abrasive belt is wound around the driving wheel and the driven wheel; and

[0007] A power assembly, the power assembly includes a motor and a transmission structure connected to the motor, the motor and the transmission structure are both installed on the bracket, the motor is arranged on a side of the driving wheel away from the driven wheel, and the motor is used to drive the transmission structure to drive the driving wheel to move, thereby driving the sanding belt to rotate.

[0008] In the belt polisher of the embodiment of the present invention, the power assembly including the motor has a higher rotation speed and a larger rotation speed adjustment range. Through the transmission structure, the motor can make the abrasive belt wound on the driving wheel and the driven wheel rotate at a higher and more stable rotation speed, thereby improving the polishing efficiency of the belt polisher; at the same time, the motor is located away from the driven wheel, which reduces the probability of the motor contacting the workpiece to be polished, thereby reducing the inconvenience of the processing operation and reducing the risk of the processing operation.

[0009] In some embodiments, the transmission structure and the motor are mounted on different sides of the bracket.

[0010] In some embodiments, the belt polisher also includes a limit member, which is located between the driving wheel and the driven wheel. The limit member includes a main shaft and a first rib and a second rib connected at both ends of the main shaft, and the abrasive belt is located between the first rib and the second rib.

[0011] In some embodiments, the sanding belt assembly includes an adjusting plate mounted on the bracket, the spindle is mounted on the adjusting plate, and the adjusting plate can move relative to the bracket to drive the spindle to move.

[0012] In some embodiments, the adjustment plate is provided with a mounting hole and a positioning hole spaced apart from the mounting hole, the adjustment plate is mounted on the bracket through the mounting hole, the positioning hole is arc-shaped and centered on the mounting hole, the adjustment plate can rotate relative to the bracket with the mounting hole as the center, and the positioning hole is used to cooperate with a fastener to lock the adjustment plate on the bracket.

[0013] In some embodiments, the belt polisher further includes a tensioning mechanism, wherein the tensioning mechanism is mounted on the bracket, the tensioning mechanism is connected to the driven wheel, and the tensioning mechanism can push the driven wheel to move in a direction away from or close to the driving wheel.

[0014] In some embodiments, the tensioning mechanism includes a spring, a tensioning rod and a transfer block, one end of the tensioning rod is connected to the spring, the other end of the tensioning rod is connected to the transfer block, and the transfer block is connected to the driven wheel;

[0015] Wherein, when the spring is in a first compressed state, the driven wheel is located close to the driving wheel; when the spring is in a second compressed state, the driven wheel is located far away from the driving wheel, and the length of the spring in the first compressed state is less than the length in the second compressed state.

[0016] In some embodiments, the transmission structure includes a first transmission wheel and a second transmission wheel connected to the first transmission wheel, the first transmission wheel is connected to the motor, the second transmission wheel is fixedly connected to the driving wheel, and the first transmission wheel moves when driven by the motor to drive the second transmission wheel to move, thereby driving the driving wheel to move.

[0017] In some embodiments, the transmission structure includes a transmission belt, and the transmission belt is wound around the first transmission wheel and the second transmission wheel.

[0018] In certain embodiments, the belt polisher further comprises a mounting seat, and the bracket, the belt assembly and the power assembly are all mounted on one side of the mounting seat.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of the structure of the belt polisher according to the embodiment of the present invention;

[0022] Figure 2 is a structural schematic diagram of the belt polisher according to an embodiment of the present invention from another perspective;

[0023] Figure 3 is a simplified diagram of the motion relationship among the motor, the transmission structure and the driving wheel according to the embodiment of the present invention;

[0024] Figure 4 This is an embodiment of the present invention Figure 1 A magnified view of part a of the belt polishing machine;

[0025] Figure 5 is a schematic diagram of the matching relationship between the limiter and the adjustment plate in an embodiment of the present invention;

[0026] Figure 6 It is a simplified diagram of the motion relationship between the tensioning mechanism and the driven wheel in an embodiment of the present invention.

[0027] Description of main component symbols:

[0028] Belt polisher 100; bracket 10; belt assembly 20; driving wheel 21; driven wheel 22; belt 23; power assembly 30; motor 31; transmission structure 32; limiter 40; spindle 41; first rib 42; second rib 43; adjustment plate 24; mounting hole 240; positioning hole 241; tensioning mechanism 50; spring 51; tensioning rod 52; first transmission wheel 320; second transmission wheel 321; transmission belt 322; mounting seat 60; matching hole 410; mounting rod 242; adapter block 101. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0034] See also Figure 1 and Figure 2 The abrasive belt polisher 100 of the embodiment of the present invention includes a bracket 10, an abrasive belt assembly 20 and a power assembly 30. The abrasive belt assembly 20 includes a driving wheel 21, a driven wheel 22 and an abrasive belt 23. The driving wheel 21 and the driven wheel 22 are both mounted on the bracket 10, and the abrasive belt 23 is wound around the driving wheel 21 and the driven wheel 22; the power assembly 30 includes a motor 31 and a transmission structure 32 connected to the motor 31. The motor 31 and the transmission structure 32 are both mounted on the bracket 10. The motor 31 is arranged on a side of the driving wheel 21 away from the driven wheel 22. The motor 31 is used to drive the transmission structure 32 to drive the driving wheel 21 to move, thereby driving the abrasive belt 23 to rotate.

[0035] In the belt polisher 100 of the embodiment of the present invention, the power assembly 30 including the motor 31 has a higher rotation speed and a larger rotation speed adjustment range. Through the transmission structure 32, the motor 31 can make the abrasive belt 23 wound on the driving wheel 21 and the driven wheel 22 rotate at a higher and more stable rotation speed, thereby improving the polishing efficiency of the belt polisher 100; at the same time, the position of the motor 31 is far away from the driven wheel 22, which reduces the probability of the motor 31 contacting the workpiece to be polished, thereby reducing the inconvenience of the processing operation and reducing the risk of the processing operation.

[0036] Specifically, the bracket 10 can be a metal plate with a certain thickness, and the shape of the bracket 10 can be a regular shape, such as a rectangle, a square, etc., or an irregular shape. The bracket 10 can be made of metal (such as steel or aluminum alloy) or high-strength engineering plastics to ensure sufficient structural strength. The bracket 10 can include a mounting structure, which can be a threaded hole, a bolt hole, etc., so that the driving wheel 21, the driven wheel 22, the motor 31 and the transmission structure 32 are all mounted on the bracket 10.

[0037] Further, a motor 31 installation area is reserved at an appropriate position of the bracket 10. The motor 31 is placed on the installation area, and the motor 31 is fixed to the bracket 10 using bolts or other fasteners. Ensure that the motor 31 is firmly installed without loosening or shaking.

[0038] Then, a suitable transmission structure 32 installation area is designed and manufactured at a position on the bracket 10 that is different from the motor 31 installation area, the transmission structure 32 is placed on the installation area, and the transmission structure 32 is firmly connected to the bracket 10 using a suitable fixing method (such as welding, bolts, etc.).

[0039] The driven wheel 22 and the driving wheel 21 may be cylindrical structures, and the central parts of the driven wheel 22 and the driving wheel 21 may include holes for connection and shafts that match the holes. The driving wheel 21 and the driven wheel 22 may rotate relative to the bracket 10 by means of shaft-hole matching. The wheel sizes of the driven wheel 22 and the driving wheel 21 may be determined according to the linear speed required by the abrasive belt 23. For example, the diameter of the driven wheel 22 is smaller than that of the driving wheel 21, and the linear speed of the driven wheel 22 is smaller than that of the driving wheel 21, and the driven wheel 22 may rotate following the driving wheel 21.

[0040] The width of the abrasive belt 23 should be smaller than the height of the driving wheel 21 and the driven wheel 22. The abrasive belt 23 can be in direct contact with the driving wheel 21 and the driven wheel 22. The surfaces of the abrasive belt 23 wound around the driving wheel 21 and the driven wheel 22 can be the same surface. The motor 31 drives the driving wheel 21 to rotate through the transmission structure 32, thereby driving the abrasive belt 23 wound around the driving wheel 21 to rotate, thereby driving the abrasive belt 23 wound around the driven wheel 22 to rotate, and then driving the driven wheel 22 to rotate. The rotating abrasive belt 23 can polish the workpiece placed in the working position.

[0041] The motor 31 can be selected according to the requirements, and the motor 31 can also be customized according to the requirements. The transmission structure 32 can transmit the power, speed and torque of the motor 31. The transmission structure 32 can adopt gear transmission or belt transmission to adapt to different usage scenarios. Among them, gear transmission is suitable for applications with precise speed matching and high torque transmission, and belt transmission is suitable for applications that require noise reduction, vibration reduction or a certain distance between shafts.

[0042] The connection between the motor 31 and the transmission structure 32 can be through belts, chains, gears, etc. Ensure that the output shaft of the motor 31 and the input shaft of the transmission structure 32 are correctly aligned and tightly connected together using appropriate connecting devices so that the transmission can be carried out effectively.

[0043] The motor 31 provides power, which is output through the output shaft of the motor 31 and received by the input shaft of the transmission structure 32 to drive the transmission structure 32 to move, thereby driving the driving wheel 21 connected to the transmission structure 32 to move, thereby driving the sanding belt 23 and the driven wheel 22 to move, so as to polish the workpiece.

[0044] The transmission structure 32 and the driving wheel 21 may be connected via a sleeve connection, a key connection or an elastic coupling.

[0045] In one embodiment, the shaft sleeve or bearing of the transmission structure 32 is sleeved on the shaft of the driving wheel 21, so that the transmission structure 32 and the driving wheel 21 are rigidly connected. When the transmission structure 32 moves, the driving wheel 21 will move along with it.

[0046] In one embodiment, there is a corresponding groove and key on the shaft of the transmission structure 32 and the driving wheel 21. The key is inserted into the groove of the transmission structure 32 and the driving wheel 21 so that they are tightly connected together.

[0047] In one embodiment, an elastic coupling may be provided between the transmission structure 32 and the driving wheel 21 , and the elastic coupling is connected to the shaft of the driving wheel 21 and the shaft of the transmission structure 32 , respectively, so that the driving wheel 21 can move with the transmission structure 32 .

[0048] See also Figure 2 In some embodiments, the transmission structure 32 includes a first transmission wheel 320 and a second transmission wheel 321 connected to the first transmission wheel 320. The first transmission wheel 320 is connected to the motor 31, and the second transmission wheel 321 is fixedly connected to the driving wheel 21. The first transmission wheel 320 moves under the drive of the motor 31 to drive the second transmission wheel 321 to move, thereby driving the driving wheel 21 to move.

[0049] In this way, the transmission structure 32 has a large speed adjustment range. By properly configuring the first transmission wheel 320 and the second transmission wheel 321, the speed of the first transmission wheel 320 can be converted into a speed suitable for the second transmission wheel 321 and the driving wheel 21. In this way, speed matching can be achieved, so that the driving wheel 21 can move at a desired speed.

[0050] Specifically, the first transmission wheel 320 and the second transmission wheel 321 may be gears or pulleys. Accordingly, the connection between the first transmission wheel 320 and the second transmission wheel 321 may be gear meshing or transmission belt connection.

[0051] In some embodiments, the first transmission wheel 320 can be directly connected to the output shaft of the motor 31, and specifically, a sleeve, flange or other fixing method can be used to ensure that the mechanical connection between them is stable. The second transmission wheel 321 and the driving wheel 21 can be connected by a sleeve, flange or key to ensure that the fixed connection between them. In this way, the second transmission wheel 321 and the driving wheel 21 can always maintain a relative position during operation.

[0052] In this gear transmission structure 32, the power of the motor 31 is transmitted from the first transmission wheel 320 to the second transmission wheel 321, and then the second transmission wheel 321 drives the driving wheel 21 to rotate together through the gear meshing. In this way, the power output of the motor 31 is transmitted to drive the driving wheel 21 to move.

[0053] See also Figure 3 In some embodiments, the transmission structure 32 includes a transmission belt 322 , and the transmission belt 322 is wound around the first transmission wheel 320 and the second transmission wheel 321 .

[0054] Thus, the elasticity of the transmission belt 322 enables it to reduce vibration and noise. Meanwhile, considering that the speed required for the abrasive belt 23 during polishing is relatively high, the transmission belt 322 can be used to prevent the abrasive belt polisher 100 from sliding when overloaded, thereby protecting the abrasive belt polisher 100 from serious damage to a certain extent, and having a certain degree of safety.

[0055] Specifically, the transmission belt 322 can be made of wear-resistant materials, such as rubber or synthetic materials, and its length and width are determined according to the design requirements of the belt polisher 100. The transmission belt 322 can be wound around the outer surfaces of the first transmission wheel 320 and the second transmission wheel 321. Under the action of friction, the transmission belt 322 transmits the power of the first transmission wheel 320 to the second transmission wheel 321, and then transmits it to the driving wheel 21 by the second transmission wheel 321, thereby realizing the movement of the driving wheel 21.

[0056] See also Figure 1 and Figure 2 In some embodiments, the transmission structure 32 and the motor 31 are installed on different sides of the bracket 10. In this way, the motor 31 is separated from the transmission structure 32. Such a layout ensures that the motor 31 does not interfere with the transmission structure 32 during operation, thereby ensuring that the transmission operation is more stable and reliable. At the same time, the installation position of the motor 31 also helps to reduce the interference of vibration during transmission on the motor 31, thereby improving the operating efficiency and stability of the entire belt polisher 100.

[0057] Specifically, the transmission structure 32 and the motor 31 can be installed on both sides of the thickness direction of the bracket 10. Of course, the transmission structure 32 and the motor 31 can also be installed in two other areas of the bracket 10, provided that the motor 31 and the transmission structure 32 do not interfere with each other.

[0058] See also Figure 1 , Figure 4 and Figure 5In some embodiments, the belt polisher 100 also includes a limit member 40, which is located between the driving wheel 21 and the driven wheel 22. The limit member 40 includes a main shaft 41 and a first rib 42 and a second rib 43 connected at both ends of the main shaft 41, and the abrasive belt 23 is located between the first rib 42 and the second rib 43.

[0059] Thus, the first rib 42 and the second rib 43 can limit the position and trajectory of the abrasive belt 23, thereby achieving accurate positioning of the abrasive belt 23. By limiting the abrasive belt 23, precise control during the polishing process can be ensured, thereby improving the polishing quality and working efficiency of the abrasive belt polisher 100.

[0060] Specifically, along the line connecting the center of the driving wheel 21 and the center of the driven wheel 22, the stopper 40 can be located on the side of the line close to the abrasive belt 23. The spindle 41 is a component used to support, fix and position the overall structure of the stopper 40. The spindle 41 is embedded in the corresponding hole of the bracket 10 to ensure that the position of the stopper 40 is stable and accurate. At both ends of the spindle 41, a first rib 42 and a second rib 43 are connected. The first rib 42 and the second rib 43 can be structures such as a stopper block, a disc, and a clamp.

[0061] The abrasive belt 23 is located between the first rib 42 and the second rib 43, and the two ribs are used to limit the position and trajectory of the abrasive belt 23. The abrasive belt 23 is restricted by the first rib 42 and the second rib 43 during operation, ensuring that it moves in the correct position to avoid displacement or dislocation.

[0062] See also Figure 1 , Figure 4 and Figure 5 In some embodiments, the sanding belt assembly 20 includes an adjustment plate 24 mounted on the bracket 10, and the spindle 41 is mounted on the adjustment plate 24. The adjustment plate 24 can move relative to the bracket 10 to drive the spindle 41 to move. In this way, the position limit range of the sanding belt 23 can be flexibly adjusted through the movement of the adjustment plate 24.

[0063] Specifically, the adjustment plate 24 can be a flat plate made of metal or engineering plastics. The adjustment plate 24 can be installed on the bracket 10 of the belt polisher 100 by bolts or other fixing devices. The adjustment plate 24 can slide or rotate on the bracket 10 to adjust the position of the abrasive belt 23. The adjustment plate 24 can have a mounting area for the spindle 41 reserved, and the spindle 41 can be connected to the adjustment plate 24 through the mounting area, so that the adjustment plate 24 can drive the movement of the spindle 41.

[0064] Further, the spindle 41 may be provided with a matching hole 410, and the adjustment plate 24 may include a mounting rod 242, which may be formed on the side of the adjustment plate 24 close to the matching hole 410 and extend toward the matching hole 410. The mounting rod 242 may extend into the matching hole 410 to complete the connection between the adjustment plate 24 and the spindle 41. This connection method is relatively stable and can reduce the probability of connection failure between the spindle 41 and the adjustment plate 24. Among them, the mounting rod 242 and the adjustment plate 24 may be an integral connection structure or a split connection structure.

[0065] See also Figure 1 , Figure 4 and Figure 5 In some embodiments, the adjustment plate 24 is provided with a mounting hole 240 and a positioning hole 241 spaced apart from the mounting hole 240. The adjustment plate 24 is mounted on the bracket 10 through the mounting hole 240. The positioning hole 241 is arc-shaped and centered on the mounting hole 240. The adjustment plate 24 can rotate relative to the bracket 10 with the mounting hole 240 as the center. The positioning hole 241 is used to cooperate with a fastener to lock the adjustment plate 24 on the bracket 10.

[0066] Thus, by the arc-shaped setting of the positioning hole 241, the position of the abrasive belt 23 can be adjusted more accurately; and the positioning hole 241 rotates relative to the bracket 10 with the mounting hole 240 as the center. This rotation method is relatively simple and has a low implementation cost.

[0067] Specifically, the mounting hole 240 may be a through hole or a blind hole on the adjustment plate 24, and is used to connect the adjustment plate 24 to the bracket 10. The adjustment plate 24 may be fixed to the bracket 10 through the mounting hole 240, ensuring the stability of the position of the adjustment plate 24. The shape of the mounting hole 240 may be a regular shape such as a circular or square hole, or may be an irregular shape hole.

[0068] The positioning hole 241 spaced apart from the mounting hole 240 can be used to limit the rotation angle of the adjustment plate 24. The arc shape of the positioning hole 241 allows the adjustment plate 24 to be fine-tuned within a certain angle range. During the adjustment process, fasteners such as nuts and bolts can be set in the positioning hole 241 to lock the adjustment plate 24 on the bracket 10. The adjustment plate 24 is mounted on the bracket 10 through the mounting hole 240, so the adjustment process of the positioning hole 241 can be made more stable with the mounting hole 240 as the center.

[0069] See also Figure 2 In some embodiments, the belt polisher 100 further includes a tensioning mechanism 50, which is mounted on the bracket 10 and connected to the driven wheel 22. The tensioning mechanism 50 can push the driven wheel 22 to move in a direction away from or close to the driving wheel 21.

[0070] In this way, the tensioning mechanism 50 can maintain the appropriate tension of the abrasive belt 23 or chain in the abrasive belt polisher 100, thereby avoiding transmission failure. Appropriate tension helps to ensure that the abrasive belt 23 and the driven wheel 22 are closely matched to avoid sliding or falling off, thereby maintaining transmission efficiency and accuracy. At the same time, the tensioning mechanism 50 can adjust the tension of the abrasive belt 23 to maintain a suitable tightness. Such a design makes it easy to relax the tensioning mechanism 50, remove the old abrasive belt 23 and install a new abrasive belt 23 when the abrasive belt 23 is worn or needs to be replaced, so that the replacement of the abrasive belt 23 can be completed quickly and efficiently, reducing downtime and improving production efficiency.

[0071] Specifically, the tensioning mechanism 50 is a mechanism for adjusting the tension of the abrasive belt 23 and maintaining the proper fit between the abrasive belt 23 and the driven wheel 22, thereby achieving transmission efficiency and stability. In order to ensure that the tensioning mechanism 50 does not loosen due to vibration or other factors during use, the tensioning mechanism 50 can be firmly fixed to the bracket 10 by bolts, nuts, pins or other fixing devices. The tensioning mechanism 50 can be installed on one side of the bracket 10, which is conducive to the connection with the driven wheel 22. The selection of the installation position should enable the tensioning mechanism 50 to adjust the tension of the abrasive belt 23 within a larger range.

[0072] The tensioning mechanism 50 can be connected to the driven wheel 22 by bolts, nuts, pins or other devices, so as to push the driven wheel 22 to move in a direction away from or close to the driving wheel 21. When the tensioning mechanism 50 pushes the driven wheel 22 to move in a direction close to the driving wheel 21, the tension of the abrasive belt 23 will be reduced, and the abrasive belt 23 will be loose, so as to facilitate the replacement of the abrasive belt 23. When the tensioning mechanism 50 pushes the driven wheel 22 to move in a direction away from the driving wheel 21, the abrasive belt 23 will be tensioned, and the abrasive belt 23 will be closely matched with the driving wheel 21 and the driven wheel 22. In this state, the abrasive belt 23 can polish the workpiece efficiently and stably.

[0073] See also Figure 2 and Figure 6 In some embodiments, the tensioning mechanism 50 includes a spring 51, a tensioning rod 52 and an adapter block 101, one end of the tensioning rod 52 is connected to the spring 51, the other end of the tensioning rod 52 is connected to the adapter block 101, and the adapter block 101 is connected to the driven wheel 22;

[0074] Among them, when the spring 51 is in the first compression state, the driven wheel 22 is located close to the driving wheel 21; when the spring 51 is in the second compression state, the driven wheel 22 is located away from the driving wheel 21, and the length of the spring 51 in the first compression state is less than the length in the second compression state.

[0075] In this way, the spring 51 has a certain degree of adaptability and can automatically adjust its tension according to the state and working conditions of the sand belt 23. When the sand belt 23 is worn or loose, the spring 51 can automatically adjust the tension as needed to keep the sand belt 23 and the driven wheel 22 in close cooperation, thereby ensuring transmission efficiency and accuracy; in addition, as a part of the tensioning mechanism 50, the spring 51 has a relatively simple structure and does not require a complex control device, so it has the characteristics of high reliability and easy maintenance.

[0076] Specifically, the spring 51 has certain elastic properties, and the elasticity of the spring 51 can be used to adjust the position of the driven wheel 22, thereby achieving control of the tension of the abrasive belt 23. One end of the tension rod 52 can be directly connected to the spring 51, and the other end can be indirectly connected to the driven wheel 22 through the adapter block 101 to increase the service life of the tension rod 52. The tension rod 52 can transmit the compression force of the spring 51 to the driven wheel 22, thereby adjusting the position of the driven wheel 22, and then adjusting the tension of the abrasive belt 23 wound around the driven wheel 22. Among them, the adapter block 101 can be made of metal or engineering plastics, and the adapter block 101 can be further connected to the driven wheel 22. Among them, the tension rod 52 and the adapter block 101 can be a split molding structure or an integral molding structure.

[0077] When the spring 51 is in the first compression state, the tension rod 52 is subjected to a small compression force, and the force is transmitted to the connected adapter block 101. The adapter block 101 then transmits the force to the driven wheel 22, so that the driven wheel 22 is close to the driving wheel 21. The sanding belt 23 is subjected to a small tension, which is convenient for replacing or adjusting the sanding belt 23.

[0078] When the spring 51 is in the second compression state, the tension rod 52 is subjected to a large compression force, and the force is transmitted to the connected adapter block 101. The adapter block 101 then transmits the force to the driven wheel 22, so that the driven wheel 22 is located away from the driving wheel 21. The sanding belt 23 is subjected to a large tension, and maintains a close fit with the driven wheel 22, so that the sanding belt 23 can move stably.

[0079] See also Figure 1 In some embodiments, the belt polisher 100 further includes a mounting seat 60 , and the bracket 10 , the belt assembly 20 , and the power assembly 30 are all mounted on one side of the mounting seat 60 .

[0080] In this way, the mounting seat 60 can enable the bracket 10 to stably support the abrasive belt assembly 20 and the power assembly 30 to ensure the reliability of the polishing process. At the same time, the setting of the mounting seat 60 makes the design space of the abrasive belt polisher 100 larger. When the bracket 10, the abrasive belt assembly 20 and the power assembly 30 are installed on one side of the mounting seat 60, the probability of the mounting seat 60 contacting the workpiece during the polishing process can be reduced. In addition, when the bracket 10, the abrasive belt assembly 20 and the power assembly 30 are installed on one side of the mounting seat 60, the center of gravity and weight of the abrasive belt polisher 100 are concentrated on one side, thereby reducing the overall instability factor during use and facilitating the operator to maintain and control the machine.

[0081] Specifically, the mounting seat 60 can be a solid bracket 10 made of a thick metal plate, or a steel frame or an aluminum alloy frame to meet the stability and reliability requirements of the machine. Further, the bracket 10, the abrasive belt assembly 20 and the power assembly 30 can be firmly fixed on the mounting seat 60 by welding, bolting or other fixing methods.

[0082] At the same time, the fixing points of the bracket 10, the abrasive belt assembly 20 and the power assembly 30 can be concentrated on the same side to ensure that they are on the same horizontal line or closely arranged. At the same time, the layout and spacing between the bracket 10, the abrasive belt assembly 20 and the power assembly 30 need to be reasonably set to avoid conflicts and interferences between them, and the specific principle is that the bracket 10, the abrasive belt assembly 20 and the power assembly 30 do not affect each other's operation after assembly.

[0083] The mounting base 60 can be handheld or mounted on a machine tool. In one embodiment, the mounting base 60 is a lightweight structure that can be carried by human hands. The mounting base 60 can be made of high-strength plastic or alloy materials, such as polyetheretherketone (PEEK), polyethersulfone (PES), aluminum alloy (e.g., 6061 aluminum alloy), magnesium alloy (e.g., AZ31B magnesium alloy), titanium alloy (e.g., Ti-6Al-4V titanium alloy), etc., to ensure sufficient firmness and durability. The mounting base 60 can be equipped with a comfortable handheld grip for the user to grasp and operate the handheld belt polisher 100.

[0084] In one embodiment, the mounting base 60 can be made of a solid metal material, such as steel (e.g., carbon steel, stainless steel, or alloy structural steel), aluminum alloy (e.g., 6061 aluminum alloy), cast iron (e.g., gray cast iron, ductile iron), etc., to ensure sufficient stability and durability. The bottom of the mounting base 60 can be equipped with a fixing frame for fixing the mounting base 60 firmly on a machine tool or a workbench.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A belt polishing machine, characterized in that: include: Bracket; A sand belt assembly, the sand belt assembly comprises a driving wheel, a driven wheel and a sand belt, the driving wheel and the driven wheel are both mounted on the bracket, and the sand belt is wound around the driving wheel and the driven wheel; and A power assembly, the power assembly includes a motor and a transmission structure connected to the motor, the motor and the transmission structure are both installed on the bracket, the motor is arranged on a side of the driving wheel away from the driven wheel, and the motor is used to drive the transmission structure to drive the driving wheel to move, thereby driving the sanding belt to rotate.

2. The belt polishing machine according to claim 1, characterized in that: The transmission structure and the motor are installed on different sides of the bracket.

3. The belt polishing machine according to claim 1, characterized in that: The belt polisher also includes a limiter, which is located between the driving wheel and the driven wheel. The limiter includes a main shaft and a first rib and a second rib connected at both ends of the main shaft. The abrasive belt is located between the first rib and the second rib.

4. The belt polishing machine according to claim 3, characterized in that: The sanding belt assembly comprises an adjusting plate mounted on the bracket, the main shaft is mounted on the adjusting plate, and the adjusting plate can move relative to the bracket to drive the main shaft to move.

5. The belt polishing machine according to claim 4, characterized in that: The adjustment plate is provided with a mounting hole and a positioning hole spaced apart from the mounting hole. The adjustment plate is mounted on the bracket through the mounting hole. The positioning hole is arc-shaped and centered on the mounting hole. The adjustment plate can rotate relative to the bracket with the mounting hole as the center. The positioning hole is used to cooperate with a fastener to lock the adjustment plate on the bracket.

6. The abrasive belt polisher according to claim 1, characterized in that: The belt polisher also includes a tensioning mechanism, which is mounted on the bracket and connected to the driven wheel. The tensioning mechanism can push the driven wheel to move in a direction away from or close to the driving wheel.

7. The abrasive belt polisher according to claim 6, characterized in that: The tensioning mechanism comprises a spring, a tensioning rod and a transfer block, one end of the tensioning rod is connected to the spring, the other end of the tensioning rod is connected to the transfer block, and the transfer block is connected to the driven wheel; Wherein, when the spring is in a first compressed state, the driven wheel is located close to the driving wheel; when the spring is in a second compressed state, the driven wheel is located far away from the driving wheel, and the length of the spring in the first compressed state is less than the length in the second compressed state.

8. The belt polishing machine according to claim 1, characterized in that: The transmission structure includes a first transmission wheel and a second transmission wheel connected to the first transmission wheel, the first transmission wheel is connected to the motor, the second transmission wheel is fixedly connected to the driving wheel, and the first transmission wheel moves under the drive of the motor to drive the second transmission wheel to move, thereby driving the driving wheel to move.

9. The belt polishing machine according to claim 8, characterized in that: The transmission structure includes a transmission belt, and the transmission belt is wound around the first transmission wheel and the second transmission wheel.

10. The abrasive belt polisher according to claim 1, characterized in that: The abrasive belt polisher also includes a mounting seat, and the bracket, the abrasive belt assembly and the power assembly are all mounted on one side of the mounting seat.

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