An abrasive head structure, a circulating grinding and polishing device, a non-polar grinding and polishing device, a rough grinding and polishing device and a grinding and polishing machine

Abstract

The utility model discloses a kind of grinding head structure, circulation grinding and polishing device, stepless grinding and polishing device, rough grinding and polishing device and grinding and polishing machine, to utilize the cooperation of elastic ring and cone ring, let grinding wheel disc be slightly shaken, and the elastic centering performance of grinding wheel disc is promoted, grinding head structure includes shaft, first rigid cone ring, second rigid cone ring, first elastic ring, second elastic ring and grinding wheel disc;Grinding wheel disc cover is arranged on the shaft, and the end of grinding wheel disc along the axial direction of the shaft is used to install grinding tool, and the inner wall of grinding wheel disc is provided with an annular flange;First rigid cone ring is arranged at the end of shaft away from grinding tool, and second rigid cone ring is arranged at the end of shaft close to grinding tool, and the end of first rigid cone ring close to second rigid cone ring is smaller end, and the end of second rigid cone ring close to first rigid cone ring is smaller end, and second rigid cone ring rotates synchronously with shaft;Belong to the technical field of grinding and polishing.

Description

Technical Field

[0001] This utility model belongs to the field of grinding and polishing technology, and more specifically, relates to a grinding head structure, a circulating grinding and polishing device, a stepless grinding and polishing device, a coarse grinding and polishing device, and a grinding and polishing machine. Background Technology

[0002] The applicant previously disclosed a grinding head in patent CN202310285966.3, which includes a main body. A rotating shaft is rotatably disposed in the main body. An upper pressure plate and a grinding wheel are sleeved on the rotating shaft. The upper pressure plate is fixed on the rotating shaft. The grinding wheel is connected to the rotating shaft through a spherical bearing. An elastic rubber ring is provided between the upper pressure plate and the grinding wheel. The grinding wheel is fixedly connected to the outer ring of the spherical bearing. The inner ring of the spherical bearing is axially slidingly engaged with the rotating shaft. A pressure cap is provided at the end of the rotating shaft near the grinding wheel. The pressure cap presses against the inner ring of the spherical bearing so that the grinding wheel presses against the elastic rubber ring. The static friction pair of the two end faces of the elastic rubber ring transmits torque to make the rotating shaft and the grinding wheel rotate synchronously.

[0003] The grinding head relies on a spherical bearing to allow the grinding wheel to rock slightly, and then uses an elastic rubber ring to give the grinding wheel a flexible centering property. When the grinding wheel rocks, it will press the elastic rubber ring, which will cause the grinding wheel to return to its original position, thus ensuring the grinding and polishing performance.

[0004] However, due to the special structure of spherical plain bearings, they are relatively large in size, which means that the structure of the grinding head must also be larger. In fact, during the shaking process, the spherical plain bearing may not make contact, which can easily damage the bearing. Moreover, its elastic rubber ring has two parallel surfaces that contact the upper pressure plate and the grinding wheel respectively. It is basically under axial pressure, and only one side is under pressure. Therefore, the rebound force is only on one side, so the elastic centering performance cannot be optimized. Summary of the Invention

[0005] The main purpose of this utility model is to provide a grinding head structure, a circulating grinding and polishing device, a stepless grinding and polishing device, a coarse grinding and polishing device, and a grinding and polishing machine, which aims to utilize the cooperation of the elastic ring and the conical ring to allow the grinding wheel to shake slightly and improve the elastic centering performance of the grinding wheel.

[0006] According to a first aspect of the present invention, a grinding head structure is provided, comprising a rotating shaft, a first rigid conical ring, a second rigid conical ring, a first elastic ring, a second elastic ring, and a grinding wheel;

[0007] The grinding wheel is mounted on the rotating shaft, and one end of the grinding wheel along the axial direction of the rotating shaft is used to mount the grinding tool. The inner wall of the grinding wheel is provided with an annular flange.

[0008] The first rigid conical ring is disposed at the end of the rotating shaft away from the grinding tool, and the second rigid conical ring is disposed at the end of the rotating shaft close to the grinding tool. The end of the first rigid conical ring close to the second rigid conical ring is the smaller end, and the end of the second rigid conical ring close to the first rigid conical ring is the smaller end. The first rigid conical ring rotates synchronously with the rotating shaft.

[0009] The annular flange is located between the first rigid conical ring and the second rigid conical ring; the first elastic ring is located on the side of the annular flange facing the first rigid conical ring, and the first elastic ring is provided with a first annular slope, which is in contact with the first rigid conical ring; the second elastic ring is located on the side of the annular flange facing the second rigid conical ring, and the second elastic ring is provided with a second annular slope, which is in contact with the second rigid conical ring.

[0010] In the above-described grinding head structure, a connecting sleeve is fixed on the rotating shaft. The first rigid conical ring and the second rigid conical ring are both sleeved on the connecting sleeve. The first rigid conical ring rotates synchronously with the connecting sleeve. An annular baffle is provided at the end of the connecting sleeve facing away from the grinding tool. The annular baffle blocks the larger end of the first rigid conical ring.

[0011] In the above-described grinding head structure, a first gap is left between the inner ring of the annular flange and the outer wall of the connecting sleeve.

[0012] In the above-described grinding head structure, a second gap is left between the outer wall of the second rigid conical ring and the inner wall of the grinding wheel.

[0013] The above-described grinding head structure also includes an end cap, which is fitted onto the end of the connecting sleeve near the grinding tool. The end cap is located on the side of the second rigid conical ring opposite to the first rigid conical ring. A bolt is threaded through the end cap and is threaded to the rotating shaft. Rotating the bolt causes the end cap to press against the second rigid conical ring.

[0014] In the above-described grinding head structure, a first adhesive layer is provided between the first annular slope and the first rigid conical ring.

[0015] In the above-described grinding head structure, a second adhesive layer is provided between the second annular slope and the second rigid conical ring.

[0016] In the above-described grinding head structure, the slope of the outer wall of the first rigid conical ring is greater than the slope of the outer wall of the second rigid conical ring.

[0017] In the above-described grinding head structure, both the first elastic ring and the second elastic ring are made of silicone.

[0018] In the above-described grinding head structure, the connecting sleeve and the first rigid conical ring are an integral structure.

[0019] According to a second aspect of the present invention, a circulating grinding and polishing device is provided, comprising a rotating disk and a first driving module for driving the rotating disk to rotate. The rotation axis of the rotating disk is a first axis. A plurality of second driving modules are evenly distributed around the first axis on the rotating disk. The output end of the second driving module is provided with a grinding head structure as described in the first aspect. The second driving module drives the rotating shaft to rotate. The axis of the rotating shaft is a second axis. The first axis and the second axis are parallel.

[0020] In the above-mentioned circulating polishing device, the second drive module is a motor, and the rotating shaft and the output shaft of the motor are an integral structure.

[0021] In the aforementioned circulating polishing device, the rotating disk can be raised and lowered under the drive of a lifting module.

[0022] According to a third aspect of the present invention, a stepless grinding and polishing device is provided, comprising a rotating disk and a first driving module for driving the rotating disk to rotate. The rotation axis of the rotating disk is a first axis, and a plurality of grinding head structures as described in the first aspect are evenly distributed around the first axis. The rotating shaft is rotatably connected to the rotating disk, and the axis of the rotating shaft is a second axis, with the first axis and the second axis being parallel.

[0023] In the above-mentioned stepless grinding and polishing device, the second drive module is a motor, and the rotating shaft and the output shaft of the motor are an integral structure.

[0024] In the aforementioned stepless polishing device, the rotating disk can be raised and lowered under the drive of a lifting module.

[0025] According to a fourth aspect of this utility model, a coarse grinding and polishing device is provided, comprising a rotating disk and a first driving module for driving the rotating disk to rotate. The rotation axis of the rotating disk is a first axis. A plurality of second driving modules are evenly distributed around the first axis on the rotating disk. The output end of the second driving module is provided with a grinding head structure as described in the first aspect. The second driving module drives the rotating shaft to rotate. The axis of the rotating shaft is a second axis. The first axis and the second axis have a preset angle, which is 60°~90°.

[0026] In the aforementioned coarse grinding and polishing device, the second drive module is a motor, and the rotating shaft and the output shaft of the motor are an integral structure.

[0027] In the aforementioned coarse grinding and polishing device, the rotating disk can be raised and lowered under the drive of a lifting module.

[0028] According to a fifth aspect of the present invention, a grinding and polishing machine is provided, including a frame, on which a plurality of second drive modules are provided. The output end of the second drive modules is provided with a grinding head structure as described in the first aspect. The second drive modules drive the rotating shaft to rotate, and the plurality of second drive modules are arranged in a linear manner.

[0029] In the aforementioned grinding and polishing machine, the second drive module is a motor, and the rotating shaft and the output shaft of the motor are an integral structure.

[0030] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0031] In this invention, a first rigid conical ring and a second rigid conical ring are provided on the rotating shaft, along with a first elastic ring and a second elastic ring. Under the constraint of the grinding wheel, the first annular slope of the first elastic ring presses against the outer wall of the first rigid conical ring, and the second annular slope of the second elastic ring presses against the outer wall of the second rigid conical ring. The first rigid conical ring rotates synchronously with the rotating shaft. The grinding wheel rotates by utilizing the friction between the elastic ring and the rigid conical ring, and the friction between the elastic ring and the grinding wheel. Both the first and second elastic rings can be subjected to axial or radial pressure. Therefore, the grinding wheel can be slightly rocked even without a spherical bearing. The overall structure is simpler, allowing for a more compact grinding head structure and a smaller size.

[0032] Simultaneously, the elastic properties of the first and second elastic rings are utilized to give the grinding wheel disc elastic centering capability. When the grinding wheel contacts the undulating surface of the plate, it shakes slightly, and the grinding wheel disc shakes slightly as well. At this time, one side of the first elastic ring will inevitably press the first rigid conical ring upward, and the first elastic ring will generate a relatively major rebound force at the pressing position. On the opposite side, the second elastic ring will press the second rigid conical ring downward, and the second elastic ring will also generate a relatively major rebound force at the pressing position. The two rebound forces work together to give the grinding wheel disc a tendency to return to its original position. Moreover, when these two major rebound forces act on the grinding wheel disc, they are diagonally arranged to maximize the tendency of the grinding wheel disc to return to its original position, making the grinding surface of the grinding wheel tend to be perpendicular to the axis of rotation. This structure makes the elastic centering performance of the grinding wheel disc better. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0034] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0035] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0036] Figure 3This is a structural schematic diagram of Embodiment 3 of the present invention.

[0037] Figure 4 This is a structural schematic diagram of Embodiment 4 of the present invention;

[0038] Figure 5 This is a structural schematic diagram of Embodiment 5 of this utility model.

[0039] The figure labels for each figure are as follows:

[0040] 1. Rotating shaft; 11. Connecting sleeve; 12. Annular baffle; 2. First rigid conical ring; 3. Second rigid conical ring; 4. First elastic ring; 5. Second elastic ring; 6. Grinding wheel; 61. Annular flange; 7. End cover; 71. Bolt; 100. Rotary disk; 200. First drive module; 300. Second drive module; 400. Frame. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0043] Example 1

[0044] Reference Figure 1 As shown, a grinding head structure includes a rotating shaft 1, a first rigid conical ring 2, a second rigid conical ring 3, a first elastic ring 4, a second elastic ring 5, and a grinding wheel 6;

[0045] The grinding wheel 6 is mounted on the rotating shaft 1. One end of the grinding wheel 6 along the axial direction of the rotating shaft 1 is used to install the grinding tool. The inner wall of the grinding wheel 6 is provided with an annular flange 61.

[0046] A connecting sleeve 11 is fixed on the rotating shaft 1. A first rigid conical ring 2 and a second rigid conical ring 3 are both sleeved on the connecting sleeve 11. The first rigid conical ring 2 is located at the end of the rotating shaft 1 away from the grinding tool, and the second rigid conical ring 3 is located at the end of the rotating shaft 1 close to the grinding tool. The end of the first rigid conical ring 2 close to the second rigid conical ring 3 is the smaller end, and the end of the second rigid conical ring 3 close to the first rigid conical ring 2 is the smaller end. The first rigid conical ring 2 rotates synchronously with the connecting sleeve 11. An annular baffle 12 is provided at the end of the connecting sleeve 11 facing away from the grinding tool. The annular baffle 12 blocks the larger end of the first rigid conical ring 2.

[0047] An annular flange 61 is located between the first rigid conical ring 2 and the second rigid conical ring 3; a first elastic ring 4 is located on the side of the annular flange 61 facing the first rigid conical ring 2, and the first elastic ring 4 is provided with a first annular slope, which contacts the first rigid conical ring 2; a second elastic ring 5 is located on the side of the annular flange 61 facing the second rigid conical ring 3, and the second elastic ring 5 is provided with a second annular slope, which contacts the second rigid conical ring 3.

[0048] It also includes an end cap 7, which is fitted onto the end of the connecting sleeve 11 near the mold. The end cap 7 is located on the side of the second rigid cone ring 3 facing away from the first rigid cone ring 2. A bolt 71 is threaded through the end cap 7 and is threaded to the rotating shaft 1.

[0049] Rotate bolt 71 to press end cap 7 against second rigid conical ring 3. Second rigid conical ring 3 presses second elastic ring 5 against annular flange 61. Annular flange 61 presses first elastic ring 4 against first rigid conical ring 2.

[0050] Under the constraint of the grinding wheel disk 6, the first annular slope of the first elastic ring 4 is pressed against the outer wall of the first rigid conical ring 2, and the second annular slope of the second elastic ring 5 is pressed against the outer wall of the second rigid conical ring 3. The second rigid conical ring 3 rotates synchronously with the rotating shaft 1. The grinding wheel disk 6 is rotated by the friction between the elastic ring and the rigid conical ring, and the friction between the elastic ring and the grinding wheel disk 6. Both the first elastic ring 4 and the second elastic ring 5 can be subjected to axial pressure or radial pressure. Therefore, the grinding wheel disk 6 can also be slightly rocked without a joint bearing. The overall structure is simpler, making the grinding head structure more compact and smaller in size.

[0051] Simultaneously, the elastic properties of the first elastic ring 4 and the second elastic ring 5 are utilized to enable the grinding wheel 6 to have elastic centering capability. When the grinding wheel contacts the undulating surface of the plate, the grinding wheel shakes slightly, and the grinding wheel 6 shakes slightly as well. At this time, one side of the first elastic ring 4 will definitely press the first rigid conical ring 2 upward. The first elastic ring 4 will generate a relatively major rebound force at the pressing position. On the opposite side, the second elastic ring 5 will press the second rigid conical ring 3 downward. The second elastic ring 5 will also generate a relatively major rebound force at the pressing position. The two rebound forces work together to make the grinding wheel 6 have a tendency to return to its original position. Moreover, when these two major rebound forces act on the grinding wheel 6, they are arranged diagonally to maximize the tendency of the grinding wheel 6 to return to its original position, making the grinding surface of the grinding wheel tend to be perpendicular to the rotating shaft 1. Through this structure, the elastic centering performance of the grinding wheel 6 is better.

[0052] Furthermore, the slope of the outer wall of the first rigid conical ring 2 is greater than that of the outer wall of the second rigid conical ring 3. Generally, the slope of the first rigid conical ring 2 is greater than 45 degrees, while the slope of the second rigid conical ring is less than 45 degrees. In this case, after the grinding wheel disc shakes slightly, the radial component of the main rebound force generated by the first elastic ring 4 is larger, while the axial component of the main rebound force generated by the second elastic ring 5 is larger. This allows the grinding wheel disc 6 to be aligned more quickly, resulting in better elastic centering performance.

[0053] In this embodiment, both the first elastic ring 4 and the second elastic ring 5 are made of silicone, which is not easily deformed. During long-term polishing, the first elastic ring 4 and the second elastic ring 5 can maintain the preload and will not experience elastic failure in a certain area.

[0054] In some other embodiments, the first elastic ring 4 and the second elastic ring 5 can be made of other elastomeric materials that are not easily deformed.

[0055] In this embodiment, by rotating the bolt 71, the position of the end cap 7 on the connecting sleeve 11 can be adjusted, thereby adjusting the degree of compression between the second rigid cone ring 3 and the second elastic ring 5, and the degree of compression between the first elastic ring 4 and the first rigid cone ring 2, so that the preload is adjustable and can be adjusted according to the actual working conditions.

[0056] In this embodiment, the connecting sleeve 11 and the rotating shaft 1 are generally keyed together to fix the connection between the connecting sleeve 11 and the rotating shaft 1.

[0057] The first rigid cone ring 2 and the connecting sleeve 11 can be either an interference fit or a key fit, so that the first rigid cone ring 2 and the connecting sleeve 11 can rotate synchronously.

[0058] The second rigid cone ring 3 can be in sliding fit with the connecting sleeve 11, which facilitates adjustment of the preload.

[0059] In other embodiments, the connecting sleeve 11 and the first rigid cone ring 2 can be cast into an integral structure using processes such as die casting.

[0060] In this embodiment, a first gap is left between the inner ring of the annular flange 61 and the outer wall of the connecting sleeve 11, and a second gap is left between the outer wall of the second rigid conical ring 3 and the inner wall of the grinding wheel 6, so as to ensure that the grinding wheel 6 can be rocked.

[0061] In some other embodiments, the position of the end cover 7 on the connecting sleeve 11 is not necessarily adjusted by bolt 71. Instead, a screw is used to thread the end cover 7 through the shaft 1 and a nut is provided on the screw. The nut is located on the side of the end cover 7 facing away from the shaft 1. This can also adjust the position of the end cover 7 on the connecting sleeve 11.

[0062] In some other embodiments, a first adhesive layer is provided between the first annular slope and the first rigid conical ring 2, and a second adhesive layer is provided between the second annular slope and the second rigid conical ring 3. The first elastic ring 4 and the first rigid conical ring 2 are integrated by adhesive bonding, and the second elastic ring 5 and the second rigid conical ring 3 are integrated. Without relying on friction, the grinding wheel 6, the first elastic ring 4, the first rigid conical ring 2, the second elastic ring 5 and the second rigid conical ring 3 can rotate synchronously.

[0063] Example 2

[0064] Reference Figures 1 to 2 As shown, a circulating grinding and polishing device includes a rotating disk 100 and a first driving module 200 that drives the rotating disk 100 to rotate. The rotation axis 1 of the rotating disk 100 is a first axis. A plurality of second driving modules 300 are evenly distributed around the first axis on the rotating disk 100. The output end of the second driving module 300 is provided with a grinding head structure as described in Embodiment 1. The second driving module 300 drives the rotating shaft 1 to rotate. The axis of the rotating shaft 1 is a second axis. The first axis and the second axis are parallel.

[0065] The revolution disk 100 rotates, causing the second drive module 300 to revolve around the first axis. The second drive module 300 drives the rotating shaft 1 to rotate around the second rotating shaft 1, so that the grinding wheel 6 rotates. The abrasive is installed on the grinding wheel 6 and can grind and polish the board, etc. Since the grinding wheel 6 can be slightly rocked, the abrasive can adapt to the undulating surface of the board. Based on the elastic centering performance of the grinding wheel 6, the grinding and polishing surface of the abrasive tends to be perpendicular to the second axis to ensure the flatness after grinding and polishing.

[0066] In this embodiment, the second drive module 300 is a motor, and the rotating shaft 1 and the output shaft of the motor are integrated into one structure, resulting in higher transmission efficiency; it is even possible to remove the rotating shaft 1 from the grinding head structure to form a standard module, which can be directly fitted onto the output shaft of the motor, making installation extremely simple.

[0067] In this embodiment, the rotary disk 100 can be raised and lowered under the drive of a lifting module, thereby controlling the contact between the mold and the plate, and allowing the mold to press onto the plate; the specific structure of the lifting module can be referred to patent CN116394090A, and will not be described in detail here.

[0068] In this embodiment, the first drive module 200 is a synchronous belt drive structure.

[0069] In some other embodiments, the second drive module 300 may use a hollow motor to facilitate water filling, and a hollow shaft and hollow bolts may be designed accordingly.

[0070] Example 3

[0071] Reference Figure 1 and Figure 3 As shown, a stepless grinding and polishing device includes a rotating disk 100 and a first driving module 200 for driving the rotating disk 100 to rotate. The rotation axis 1 of the rotating disk 100 is a first axis, and a plurality of grinding head structures as described in Embodiment 1 are evenly distributed around the first axis. The rotating shaft 1 is rotatably connected to the rotating disk 100, and the axis of the rotating shaft 1 is a second axis. The first axis and the second axis are parallel.

[0072] The rotating disk 100 rotates, causing the rotating shaft 1 to revolve around the first axis. The abrasive is mounted on the grinding wheel 6. The abrasive can rotate when it comes into contact with the material, which in turn drives the rotating shaft 1 to rotate. Since the grinding wheel 6 can be slightly rocked, the abrasive can adapt to the undulating surface of the material. Based on the elastic centering performance of the grinding wheel 6, the polishing surface of the abrasive tends to be perpendicular to the second axis to ensure the flatness after polishing.

[0073] In this embodiment, the second drive module 300 is a motor, and the rotating shaft 1 and the output shaft of the motor are integrated into one structure, resulting in higher transmission efficiency; it is even possible to remove the rotating shaft 1 from the grinding head structure to form a standard module, which can be directly fitted onto the output shaft of the motor, making installation extremely simple.

[0074] In this embodiment, the rotary disk 100 can be raised and lowered under the drive of a lifting module, thereby controlling the contact between the mold and the plate, and allowing the mold to press onto the plate; the specific structure of the lifting module can be referred to patent CN116394090A, and will not be described in detail here.

[0075] In this embodiment, the first drive module 200 is a synchronous belt drive structure.

[0076] Example 4

[0077] Reference Figure 1 and Figure 4 As shown, a coarse grinding and polishing device includes a rotating disk 100 and a first drive module 200 that drives the rotating disk 100 to rotate. The rotation axis 1 of the rotating disk 100 is the first axis. A plurality of second drive modules 300 are evenly distributed around the first axis on the rotating disk 100. The output end of the second drive module 300 is provided with a grinding head structure as described in Embodiment 1. The second drive module 300 drives the rotating shaft 1 to rotate. The axis of the rotating shaft 1 is the second axis. The first axis and the second axis have a preset angle, which is 60°~90°.

[0078] The second drive module 300 is horizontally arranged on the rotary disk 100, so that the first axis is perpendicular or nearly perpendicular to the second axis. The outer circumferential surface of the abrasive on the grinding wheel 6 is the polishing surface. The first drive module 200 drives the rotary disk 100 to rotate, causing the second drive module 300 to revolve around the first axis. The second drive module 300 drives the rotating shaft 1 to rotate around the first axis, so that the grinding wheel 6 rotates, allowing the abrasive to polish the board. The grinding wheel 6 can be slightly rocked, allowing the abrasive to adapt to the undulating surface of the board. Based on the elastic centering performance of the grinding wheel 6, the axis of the abrasive tends to be parallel to the second axis, and the axis of the abrasive will tend to be parallel to the surface of the board. The flatness after rough polishing is better, which is beneficial to subsequent fine polishing.

[0079] In this embodiment, the second drive module 300 is a motor, and the rotating shaft 1 and the output shaft of the motor are integrated into one structure, resulting in higher transmission efficiency; it is even possible to remove the rotating shaft 1 from the grinding head structure to form a standard module, which can be directly fitted onto the output shaft of the motor, making installation extremely simple.

[0080] In this embodiment, the rotary disk 100 can be raised and lowered under the drive of a lifting module, thereby controlling the contact between the mold and the plate, and allowing the mold to press onto the plate; the specific structure of the lifting module can be referred to patent CN116394090A, and will not be described in detail here.

[0081] In this embodiment, the first drive module 200 is a synchronous belt drive structure.

[0082] Example 5

[0083] Reference Figure 1 and Figure 5 As shown, a grinding and polishing machine includes a frame 400, on which a plurality of second drive modules 300 are provided. The output end of the second drive module 300 is provided with a grinding head structure as described in Embodiment 1. The second drive module 300 drives the rotating shaft 1 to rotate. The plurality of second drive modules 300 are arranged in a straight line.

[0084] This polishing machine is suitable for polishing small boards. The axis of the rotating shaft 1 is generally perpendicular to the board. The abrasives are mounted on the polishing disc 6. The board passes under the abrasives, and each abrasive sequentially polishes the board. The roughness of the polished surface of each abrasive is different, so that the board can smoothly complete rough polishing and fine polishing. Since the polishing disc 6 can be slightly shaken, the abrasives can adapt to the undulating surface of the board. Based on the elastic centering performance of the polishing disc 6, the polishing surface of the abrasive tends to be perpendicular to the second axis to ensure the flatness after polishing.

[0085] In this embodiment, the second drive module 300 is a motor, and the rotating shaft 1 and the output shaft of the motor are integrated into one structure, resulting in higher transmission efficiency; it is even possible to remove the rotating shaft 1 from the grinding head structure to form a standard module, which can be directly fitted onto the output shaft of the motor, making installation extremely simple.

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

Claims

1. A grinding head structure, characterized in that, It includes a rotating shaft, a first rigid conical ring, a second rigid conical ring, a first elastic ring, a second elastic ring, and a grinding wheel; The grinding wheel is mounted on the rotating shaft, and one end of the grinding wheel along the axial direction of the rotating shaft is used to mount the grinding tool. The inner wall of the grinding wheel is provided with an annular flange. The first rigid conical ring is disposed at the end of the rotating shaft away from the grinding tool, and the second rigid conical ring is disposed at the end of the rotating shaft close to the grinding tool. The end of the first rigid conical ring close to the second rigid conical ring is the smaller end, and the end of the second rigid conical ring close to the first rigid conical ring is the smaller end. The first rigid conical ring rotates synchronously with the rotating shaft. The annular flange is located between the first rigid conical ring and the second rigid conical ring; the first elastic ring is located on the side of the annular flange facing the first rigid conical ring, and the first elastic ring is provided with a first annular slope, which is in contact with the first rigid conical ring; The second elastic ring is located on the side of the annular flange facing the second rigid conical ring, and the second elastic ring is provided with a second annular slope, which contacts the second rigid conical ring; A connecting sleeve is fixed on the rotating shaft. The first rigid conical ring and the second rigid conical ring are both sleeved on the connecting sleeve. The first rigid conical ring rotates synchronously with the connecting sleeve. An annular baffle is provided at the end of the connecting sleeve facing away from the grinding tool. The annular baffle blocks the larger end of the first rigid conical ring. A first gap is left between the inner ring of the annular flange and the outer wall of the connecting sleeve; A second gap is left between the outer wall of the second rigid conical ring and the inner wall of the grinding wheel; The slope of the outer wall of the first rigid conical ring is greater than the slope of the outer wall of the second rigid conical ring.

2. The grinding head structure according to claim 1, characterized in that, It also includes an end cap, which is fitted onto the end of the connecting sleeve near the mold. The end cap is located on the side of the second rigid cone ring opposite to the first rigid cone ring. A bolt is threaded through the end cap and is threaded to the rotating shaft. Rotating the bolt causes the end cap to press against the second rigid cone ring.

3. The grinding head structure according to claim 1, characterized in that, A first adhesive layer is provided between the first annular slope and the first rigid conical ring; A second adhesive layer is provided between the second annular slope and the second rigid cone ring.

4. The grinding head structure according to claim 1, characterized in that, Both the first elastic ring and the second elastic ring are made of silicone.

5. The grinding head structure according to claim 1, characterized in that, The connecting sleeve and the first rigid conical ring are an integral structure.

6. A circulating grinding and polishing device, comprising a rotating disk, a first driving module for driving the rotating disk to rotate, wherein the rotation axis of the rotating disk is a first axis, and a plurality of second driving modules are evenly distributed around the first axis on the rotating disk, characterized in that, The output end of the second drive module is provided with a grinding head structure as described in any one of claims 1-5. The second drive module drives the rotating shaft to rotate, and the axis of the rotating shaft is a second axis, while the first axis is parallel to the second axis. The rotary table can be raised and lowered under the drive of a lifting module.

7. A stepless grinding and polishing device, comprising a rotating disk and a first driving module for driving the rotating disk to rotate, wherein the rotation axis of the rotating disk is a first axis, characterized in that, A plurality of grinding head structures as described in any one of claims 1-5 are evenly distributed around a first axis, the rotating shaft is rotatably connected to the rotary disk, the axis of the rotating shaft is a second axis, and the first axis is parallel to the second axis; The rotary table can be raised and lowered under the drive of a lifting module.

8. A coarse grinding and polishing device, comprising a rotating disk, a first drive module for driving the rotating disk to rotate, wherein the rotation axis of the rotating disk is a first axis, and a plurality of second drive modules are evenly distributed circumferentially around the first axis on the rotating disk, characterized in that, The output end of the second drive module is provided with a grinding head structure as described in any one of claims 1-5. The second drive module drives the rotating shaft to rotate. The axis of the rotating shaft is a second axis. The first axis and the second axis have a preset angle, which is 60°~90°. The rotary table can be raised and lowered under the drive of a lifting module.

9. A grinding and polishing machine, comprising a frame, wherein a plurality of second drive modules are provided on the frame, characterized in that, The output end of the second drive module is provided with a grinding head structure as described in any one of claims 1-5. The second drive module drives the rotating shaft to rotate, and multiple second drive modules are arranged in a straight line.

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