A floating polishing head and pressure control device for stone polishing

Abstract

The application relates to the polishing technical field and particularly relates to a floating polishing head for a stone carving polishing process and a pressure control device, which comprises a polishing base, a fixed base fixed on one side of the polishing base, and a hollow shaft vertically penetrating and rotatably arranged on one side of the polishing base through bearings, the bottom end of the hollow shaft is provided with a rotating disc, and a plurality of connecting frames are fixedly arranged at equal angles around the top end edge of the rotating disc, through the arrangement of a switching assembly and a compression assembly, when the floating polishing head is used, the control module can control the driving motor to stop running after the current polishing block finishes polishing, the cylinder lifts the abutting column, the abutting column is transposed through a worm wheel, a worm, a ratchet wheel and a driving rack, and then the abutting column is inserted into the next group of limiting seats, so that the polishing block switching is automatically completed, the defects that the existing device has a long downtime and relies on manual operation are solved, the downtime is shortened, the operation continuity is improved, and the operation error is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the polishing technical field, and in particular to a floating polishing head and pressure control device for stone carving polishing process. BACKGROUND

[0002] The existing polishing device is usually fixedly connected with a mechanical arm during use, and the polishing head is moved to the area to be processed of the stone carving plate by the mechanical arm, and the polishing head is gradually close to the surface of the stone carving plate and reaches the preset polishing distance through the position adjustment of the mechanical arm. Then the driving motor of the device is started, and the driving motor drives the polishing head to rotate as a whole through gear transmission structure, and the polishing block on the polishing head rotates with the polishing head and produces friction contact with the surface of the stone carving plate, so as to polish the surface of the stone. When the polishing of the current stage is completed and different mesh polishing blocks need to be switched to adapt to the subsequent processing requirements, the driving motor and the mechanical arm need to be stopped, and then the current polishing block is manually disassembled, the new polishing block corresponding to the mesh is installed on the polishing head, and after installation, the relative position of the polishing head and the stone carving plate needs to be calibrated again. After confirming that there is no error, the driving motor and the mechanical arm are restarted, and the next stage of polishing operation can be continued.

[0003] The polishing head of the existing polishing device has many use defects, which seriously affects the polishing efficiency and quality: first, the polishing block switching depends on manual operation and is low in efficiency. The polishing block needs to be stopped during switching, manually disassembled and installed, which not only consumes a lot of time, but also easily causes the installation position of the polishing block to deviate due to manual operation error, and then the polishing block and the stone are not in uniform contact during the subsequent polishing process, which affects the polishing precision and flatness of the surface of the stone carving plate. SUMMARY

[0004] The present application aims to provide a floating polishing head and pressure control device for stone carving polishing process to solve the problems in the background art.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a floating polishing head for stone carving polishing process, comprising a polishing seat, a fixed seat fixed on one side of the polishing seat, and a hollow shaft vertically penetrating and rotatingly installed on one side of the polishing seat through a bearing, the bottom end of the hollow shaft is provided with a rotating disc, the top end edge of the rotating disc is fixedly installed with a plurality of connecting frames at equal angles, the one end of the plurality of connecting frames away from the rotating disc is fixedly installed on the outside of one side of the hollow shaft, the bottom end of the rotating disc is provided with a plurality of polishing assemblies of different mesh around, the inside of the bottom end of the hollow shaft is provided with a switching assembly, the top end of the polishing seat is provided with a driving motor, and the middle part of the rotating disc is provided with a circular hole penetratingly formed. Each polishing assembly comprises two symmetrically arranged limiting seats, the two symmetrically arranged limiting seats are attached to the bottom surface of the rotating disc, the inside of the bottom end of each limiting seat is provided with a limiting sliding groove, the inside of the limiting sliding groove is slidingly and clampingly installed with a polishing block, the top end of the rotating disc near each limiting seat is provided with a compression assembly and a liquid spraying assembly; the switching assembly comprises a cylinder and a rotating frame, the cylinder is vertically arranged in the inside of the hollow shaft, the rotating frame is transversely arranged at the bottom end of the output end of the cylinder, the top end of the cylinder is fixedly installed with a supporting frame, the both ends of the supporting frame are fixedly installed on the inner wall of the hollow shaft, and the bottom end output end of the cylinder is fixedly installed with a positioning seat; the compression assembly comprises two limiting rods and an auxiliary frame, the both ends of the two limiting rods are symmetrically fixedly installed on the top end outside of the limiting seat, the top end of the two limiting rods is slidingly installed on the top end outside of the rotating disc, the both ends of the auxiliary frame are fixedly installed on the top end of the limiting rod on the corresponding side, the outside of each limiting rod is sleeved with a compression spring, and the both ends of the compression spring are fixedly installed on the top end of the rotating disc and the bottom end of the auxiliary frame respectively.

[0006] Further, the side of the polishing seat near the driving motor is fixedly installed with a mounting seat, the driving motor is fixedly installed on the top end of the mounting seat, the output end of the driving motor is fixedly installed with a driving gear, the outside of the hollow shaft near the driving gear is fixedly installed with a gear ring penetratingly, and the gear ring is meshingly connected with the driving gear.

[0007] Further, the inside of the side of the limiting seat near the opening end of the limiting sliding groove is penetratingly and threadedly installed with a limiting bolt, and the side outside of the limiting bolt is abuttingly attached to one end of the polishing block.

[0008] Further, the bottom end middle part of the positioning seat is vertically and rotatingly clampingly installed with a rotating rod, the bottom end of the rotating rod is fixedly connected with the top end middle part of the rotating frame, the both ends of the bottom part of the rotating frame are vertically fixed with abutting columns, the outside of the abutting column near the top end is sleeved and fixedly installed with a limiting ring, the outside of the rotating rod near the top end is penetratingly fixed with a worm gear, the inside of the side of the limiting seat near the abutting column is penetratingly provided with an abutting hole, and the abutting hole is insertingly matched with the abutting column.

[0009] Further, two positioning frames are symmetrically fixed on one side of the positioning seat close to the worm wheel, a worm is rotatably and claspingly installed between the two positioning frames, the worm is meshingly connected with the worm wheel, a ratchet wheel is fixedly installed on one end of the worm, and a driving rack is vertically and fixedly installed on the inner wall of one side of the hollow shaft close to the ratchet wheel.

[0010] Further, the liquid spraying assembly comprises a piston rod and a liquid collecting cylinder, the piston rod is vertically fixed in the middle of the bottom end of the auxiliary frame, the liquid collecting cylinder is vertically fixed on the top end of the rotating disc, the piston end of the piston rod is slidingly and sealingly installed in the inside of the liquid collecting cylinder, and two one-way liquid discharge valve pipes are symmetrically and fixedly installed on the bottom end of the liquid collecting cylinder.

[0011] Further, the output end of each one-way liquid discharge valve pipe is fixedly and communicatively connected with the first stretching pipe, and the bottom end of the limiting seat is fixedly and claspingly installed with the nozzle pipe on both sides.

[0012] Further, a one-way liquid inlet valve pipe is fixedly and penetratively installed on one side of the bottom end of the liquid collecting cylinder, the input end of the one-way liquid inlet valve pipe is fixedly and communicatively connected with the second stretching pipe, one end of the second stretching pipe is fixedly and penetratively installed in the inside of the bottom end of the liquid storage tank, the liquid storage tank is fixedly installed on one side of the connecting frame, and a sealing cover is threadedly connected with the top end of the liquid storage tank.

[0013] The application also provides a pressure control device for the floating polishing head for the stone polishing process, which comprises a distance sensor, and the distance sensor is fixedly and embededly installed in the inside of the bottom end of the resisting column.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] Through the arrangement of the switching assembly and the compression assembly, when the floating polishing head is used, the control module can control the driving motor to stop running after the current polishing block finishes polishing, the cylinder can lift the resisting column, the resisting column can be transposed through the worm wheel, the worm, the ratchet wheel and the driving rack, and the next set of limiting seats can be inserted, so that the polishing block switching is automatically completed, the defects of long downtime and dependence on manual operation of the existing device are solved, the downtime is shortened, the operation continuity is improved, and the operation error is reduced.

[0016] Through the arrangement of the compression assembly and the liquid spraying assembly, when the floating polishing head is used, the corresponding set of liquid storage tanks can be filled with the polishing agent suitable for the mesh number of the polishing block at the bottom end of the rotating disc, the sealing cover at the top end of the liquid storage tank can prevent the polishing agent from being polluted or evaporated, the independent liquid storage and the mesh number corresponding design can solve the problem of unstable polishing quality caused by the mismatch of the polishing agent of the existing device, meanwhile, the synchronous effect of liquid supply when the polishing starts can be realized, and the overall polishing effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a bottom-view three-dimensional structural diagram of the turntable and limiting seat of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the limiting seat and polishing block of the present invention;

[0020] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the turntable and the circular hole of the present invention;

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle;

[0022] Figure 6 This is a bottom-view three-dimensional structural diagram of the positioning seat and rotating rod of the present invention;

[0023] Figure 7 This is a three-dimensional structural diagram of the limiting seat and limiting bolt of the present invention;

[0024] Figure 8 This is a partial cross-sectional three-dimensional structural schematic diagram of the turntable and limiting rod of the present invention;

[0025] Figure 9 This is a bottom-view perspective view of the piston rod and liquid collecting cylinder of the present invention.

[0026] Figure 10 for Figure 9 Enlarged structural diagram at point B;

[0027] Figure 11 This is a three-dimensional structural diagram of the limiting seat and the first stretching tube of the present invention;

[0028] Figure 12 This is a top view of the rotary table and liquid storage tank of the present invention.

[0029] The components represented by each number in the attached diagram are listed below: 1. Polishing base; 2. Fixed base; 3. Hollow shaft; 4. Connecting frame; 5. Turntable; 6. Mounting base; 7. Drive motor; 8. Drive gear; 9. Gear ring; 10. Limiting seat; 11. Limiting groove; 12. Polishing block; 13. Limiting bolt; 14. Limiting rod; 15. Auxiliary frame; 16. Compression spring; 17. Support frame; 18. Cylinder; 19. Positioning seat; 20. Rotating rod ; 21. Rotating frame; 22. Abutting post; 23. Limiting ring; 24. Positioning frame; 25. Worm gear; 26. Ratchet; 27. Drive rack; 28. Worm gear; 29. ​​Distance sensor; 30. Piston rod; 31. Liquid collecting cylinder; 32. One-way drain valve pipe; 33. First tension pipe; 34. Nozzle pipe; 35. One-way inlet valve pipe; 36. Second tension pipe; 37. Liquid storage tank; 38. Round hole; 39. Abutting hole; 40. Sealing cap. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1 - Figure 8 A floating polishing head for stone carving polishing includes a polishing seat 1, a fixed seat 2 fixed to one side of the polishing seat 1, and a hollow shaft 3 vertically penetrating and rotatably mounted on one side of the polishing seat 1 via bearings. A turntable 5 is provided at the bottom end of the hollow shaft 3. Several connecting brackets 4 are fixedly mounted at equal angles around the top edge of the turntable 5. The ends of the connecting brackets 4 furthest from the turntable 5 are fixedly mounted on the outside of one side of the hollow shaft 3. Several sets of polishing components with different mesh sizes are arranged around the bottom end of the turntable 5. A switching component is provided inside the bottom of the 3. A drive motor 7 is provided on one side of the top of the polishing seat 1. A circular hole 38 is provided through the middle of the turntable 5. Each polishing component includes two symmetrically arranged limiting seats 10. The two symmetrically arranged limiting seats 10 are attached to the bottom surface of the turntable 5. A limiting groove 11 is provided inside the bottom of each limiting seat 10. A polishing block 12 is slidably engaged inside the limiting groove 11. A compression component and a liquid spraying component are provided on the top of each limiting seat 10 near the top of the turntable 5.

[0032] A mounting base 6 is fixedly installed on the side of the polishing base 1 near the drive motor 7. The drive motor 7 is fixedly installed on the top of the mounting base 6. A drive gear 8 is fixedly installed on the output end of the drive motor 7. A gear ring 9 is fixedly installed through the hollow shaft 3 near the outside of the drive gear 8. The gear ring 9 is meshed with the drive gear 8.

[0033] A limiting bolt 13 is installed inside the limiting seat 10 near the opening end of the limiting slide groove 11 with a through thread. The outer side of the limiting bolt 13 abuts and fits against one end of the polishing block 12.

[0034] The switching assembly includes a cylinder 18 and a rotating frame 21. The cylinder 18 is vertically installed inside the hollow shaft 3, and the rotating frame 21 is horizontally installed at the bottom of the output end of the cylinder 18. A support frame 17 is fixedly installed at the top of the cylinder 18, and both ends of the support frame 17 are fixedly installed on the inner wall of the hollow shaft 3. A positioning seat 19 is fixedly installed at the bottom output end of the cylinder 18.

[0035] A rotating rod 20 is vertically and rotatably mounted on the bottom center of the positioning seat 19. The bottom end of the rotating rod 20 is fixedly connected to the top center of the rotating frame 21. Both ends of the rotating frame 21 are vertically fixed with abutting posts 22. Limiting rings 23 are fixedly fitted on the outer side of the abutting posts 22 near the top. A worm gear 28 is fixedly inserted through the outer side of the rotating rod 20 near the top. Abutting hole 39 is opened through the inner side of the limiting seat 10 near the abutting post 22, and the abutting hole 39 can be inserted and cooperate with the abutting post 22.

[0036] Two positioning frames 24 are symmetrically fixed on the side of the positioning seat 19 near the worm gear 28. A worm 25 is installed between the two positioning frames 24 and rotates through it. The worm 25 is meshed with the worm gear 28. A ratchet 26 is fixedly installed at one end of the worm 25. A drive rack 27 is vertically fixed on the inner wall of the hollow shaft 3 near the ratchet 26.

[0037] The compression assembly includes two limiting rods 14 and an auxiliary frame 15. The two limiting rods 14 are symmetrically fixedly installed on the outside of the top of the limiting seat 10. The top of the two limiting rods 14 are slidably installed on the outside of the top of the turntable 5. The two ends of the auxiliary frame 15 are fixedly installed on the top of the limiting rods 14 on the corresponding sides. Each limiting rod 14 is fitted with a compression spring 16. The two ends of the compression spring 16 are fixedly installed on the top of the turntable 5 and the bottom of the auxiliary frame 15, respectively.

[0038] The present invention also provides a pressure control device for a floating polishing head used in a stone carving polishing process, including a distance sensor, which is embedded and fixedly installed inside the bottom end of a contact post.

[0039] In this embodiment, when using this polishing head device, the fixing base 2 is first fixed to the existing robotic arm. The robotic arm then moves the polishing head and pressure control device to the position to be processed on the stone carving slab. The drive motor 7 on the mounting base 6 at the top of the polishing base 1 is started. The output end of the drive motor 7 drives the drive gear 8 to rotate, which in turn drives the meshing gear ring 9 to rotate. The rotation of the gear ring 9 drives the hollow shaft 3 to rotate, which in turn drives the turntable 5 to rotate synchronously through the connecting frame 4 fixed at an equal angle around the top edge of the turntable 5, providing stable rotational power for subsequent polishing operations.

[0040] When the polishing operation starts, the robotic arm lowers the entire device, causing the polishing components at the bottom of the turntable 5 to gradually approach the surface of the stone slab. The switching components begin to work: the cylinder 18 is fixed to the inner wall of the hollow shaft 3 by the support frame 17 at the top, and its bottom output end pushes the positioning seat 19 to move downward. The rotating rod 20, which is engaged at the bottom of the positioning seat 19, drives the horizontally arranged rotating frame 21 to move downward. The vertically fixed abutment posts 22 at both ends of the rotating frame 21 move downward simultaneously, pass through the round hole 38, and finally insert into the abutment hole 39 of the limit seat 10 in the corresponding polishing component group. As the movement continues downward, the abutment post 22 pushes the limiting seat 10 and polishing block 12 down through the abutment hole 39. As the polishing block 12 descends, the compression components move synchronously: the limiting rod 14, which is symmetrically fixed at the top of the limiting seat 10, moves down with the limiting seat 10, and the auxiliary frame 15, which is fixed at the top of the limiting rod 14, compresses the compression spring 16 sleeved on the outside of the limiting rod 14 until the polishing block 12 protrudes out of the other polishing components, contacts the surface of the stone carving slab, and begins polishing.

[0041] During polishing, the distance sensor 29 embedded at the bottom of the contact post 22 detects the distance between the polishing block 12 and the stone slab in real time. If the distance is too small (indicating excessive polishing pressure, which may lead to over-polishing or damage to the stone), the distance sensor 29 feeds the signal back to the control module. The control module reduces the air pressure inside the cylinder 18, the rotating frame 21 is slightly raised, and the compression spring 16 rebounds, causing the auxiliary frame 15, the limit rod 14, and the limit seat 10 to move upward. The polishing block 12 moves upward synchronously, and the polishing pressure decreases accordingly. If the distance is too large (indicating insufficient polishing pressure, which may lead to missed polishing), the control module increases the air pressure in the cylinder 18, pushes the rotating frame 21 downward, and the polishing block 12 extends again, increasing the pressure. This dynamic adjustment ensures that the polishing pressure is always adapted to the surface condition of the stone slab, achieving pressure floating control and ensuring polishing accuracy and surface gloss.

[0042] After the polishing block 12 of the current mesh size completes the corresponding stage of polishing, the control module first controls the drive motor 7 to stop running, so that the drive gear 8 and gear ring 9 stop meshing and transmission, and the hollow shaft 3 and turntable 5 stop, so as to avoid the rotation of turntable 5 from interfering with the switching positioning.

[0043] Subsequently, the existing external control module reduces the internal air pressure of cylinder 18. The output end of cylinder 18 drives the positioning seat 19, rotating rod 20 and rotating frame 21 to rise. The abutment posts 22 at both ends of rotating frame 21 move upward synchronously, gradually disengaging from the abutment hole 39 of the current limit seat 10, until they completely exit the abutment hole 39 and rise back above the round hole 38 of turntable 5, completely separating from the current polishing assembly, reserving space for subsequent rotation switching.

[0044] At this time, the control module controls the cylinder 18 to continue to rise, and the positioning seat 19 and the positioning brackets 24 on both sides move upward synchronously with the output end of the cylinder 18. The worm gear 25 between the positioning brackets 24 and the ratchet 26 at one end also rise accordingly. Since the drive rack 27 on the inner wall of the hollow shaft 3 is in a fixed state, when the ratchet 26 rises with the positioning seat 19 to mesh with the drive rack 27, the teeth of the drive rack 27 will drive the ratchet 26 to rotate around its own axis, thereby driving the worm gear 25, which is fixedly connected to the ratchet 26, to rotate between the positioning brackets 24. Because the worm 25 meshes with the worm wheel 28 at the top of the rotating rod 20, the rotation of the worm 25 will drive the worm wheel 28 and the rotating rod 20 to rotate synchronously. The bottom end of the rotating rod 20 is fixedly connected to the rotating frame 21. Therefore, the rotating frame 21 and the abutment posts 22 at both ends will rotate synchronously with the rotating rod 20. The rotation angle matches the interval angle of the two adjacent polishing components at the bottom of the turntable 5 until the abutment post 22 is aligned directly above the abutment hole 39 of the next set of limit seats 10.

[0045] After the contact post 22 completes its positioning, the control module controls the output end of the cylinder 18 to move downwards, causing the rotating frame 21 and the contact post 22 to pass through the circular hole 38 and precisely insert into the contact hole 39 of the next set of limit seats 10. The contact post 22, continuing to move downwards, pushes the limit seat 10 and the polishing block 12 down along the limit slide groove 11. The limit rod 14 drives the auxiliary frame 15 to compress the compression spring 16, causing the next set of polishing blocks 12 to protrude from other components, completing the automatic switching. Then, the drive motor 7 is restarted, and the polishing operation of the next set of mesh sizes can begin. This effectively solves the defects of long downtime and reliance on manual intervention when switching polishing blocks 12 in existing polishing devices. The entire process does not require disassembling the polishing blocks 12, and the switching is completed automatically, significantly shortening downtime, improving the continuity of polishing operations, reducing human operation errors, protecting device components, and balancing switching efficiency and operational reliability.

[0046] When it is necessary to replace the polishing block 12, the structural advantage of the limiting slide 11 can be used to quickly complete the operation: First, stop the device operation, and the robotic arm drives the entire device to lift, so that all polishing blocks 12 are removed from the stone carving board; then loosen the limiting bolt 13 near the opening end of the limiting seat 10 near the limiting slide 11, and the contact state between one end of the limiting bolt 13 and the polishing block 12 is released. At this time, since the limiting slide 11 provides a complete sliding channel for the polishing block 12, the old polishing block 12 can be directly pulled out from the opening end of the limiting slide 11; take a new polishing block 12 with the appropriate grit and slide it into the channel of the limiting slide 11 until one end of the polishing block 12 is in contact with the inner wall of the limiting slide 11; finally, tighten the limiting bolt 13 so that one end of the limiting bolt 13 is in contact with the new polishing block 12, and complete the positioning and fixing of the polishing block 12. The entire replacement process does not require disassembling the limiting seat 10, which solves the problem of disassembling components and cumbersome operation when replacing polishing blocks 12 in traditional polishing devices, and greatly shortens the replacement time.

[0047] Example 2: Please refer to Figure 8 - Figure 12 This embodiment further describes Example 1. The spraying assembly includes a piston rod 30 and a collection cylinder 31. The piston rod 30 is vertically fixed at the bottom center of the auxiliary frame 15, and the collection cylinder 31 is vertically fixed at the top outside of the turntable 5. The piston end of the piston rod 30 is slidably sealed inside the collection cylinder 31. Two one-way drain valve pipes 32 are symmetrically fixed through the bottom end of the collection cylinder 31.

[0048] Each one-way drain valve pipe 32 has a first tension pipe 33 fixedly connected to its output end. Both sides of the bottom end of the limiting seat 10 are fixedly installed with nozzle pipes 34. The output end of the first tension pipe 33 is connected and fixedly connected to the input end of the nozzle pipe 34 on the corresponding side.

[0049] A one-way inlet valve pipe 35 is fixed through one side of the bottom end of the liquid collecting cylinder 31. A second tension pipe 36 is fixed through the input end of the one-way inlet valve pipe 35. One end of the second tension pipe 36 is fixed through the bottom end of the liquid storage tank 37. The liquid storage tank 37 is fixedly installed on the outside of one side of the connecting frame 4. A sealing cap 40 is threadedly connected to the top of the liquid storage tank 37.

[0050] In this embodiment, before using the floating polishing head and pressure control device, the appropriate polishing agent must be filled into the corresponding liquid storage tank 37 according to the polishing block 12 mesh number of each group of polishing components at the bottom of the turntable 5. When filling, open the sealing cap 40 at the top of the liquid storage tank 37, inject the polishing agent matching the polishing block 12 mesh number of that group into the tank, and then tighten the sealing cap 40 to prevent the polishing agent from being contaminated or evaporating.

[0051] The functions of the appropriate polishing agents differ significantly depending on the polishing requirements of the polishing blocks 12 with different mesh sizes: For low-mesh polishing blocks 12, the corresponding reservoir 37 needs to be filled with a cutting-type polishing fluid containing diamond particles. The high-hardness particles help the low-mesh polishing blocks 12 quickly remove tool marks and burrs from the stone slab surface. Using a high-mesh polishing agent will result in insufficient cutting force and a significant reduction in coarse grinding efficiency. For medium-mesh polishing blocks 12, a lubricating polishing fluid containing micron-sized alumina is required, which can further eliminate coarse grinding residue. The device reduces scratches and friction between the polishing block 12 and the stone, preventing new scratches from appearing during the over-polishing stage. Using low-mesh cutting-type polishing agents can lead to excessively rough stone surfaces, increasing the difficulty of subsequent fine polishing. For high-mesh polishing blocks 12, a polishing liquid containing nano-chromium oxide is required. Its fine particles can gradually improve the gloss of the stone carving surface through micro-cutting and surface filling. Using low-mesh, coarse-grained polishing agents will directly leave fine scratches on the stone surface, making a mirror finish impossible. This device, through its independent liquid storage and mesh-matching design, solves the problem of unstable polishing quality caused by mismatched polishing agents in existing devices.

[0052] When the device enters the polishing operation stage and the switching component drives the target polishing block 12 to descend, the spraying component will start synchronously with the polishing action: as the contact column 22 pushes the limiting seat 10 and the polishing block 12 down along the limiting slide groove 11, the limiting rod 14 symmetrically fixed at the top of the limiting seat 10 will synchronously drive the auxiliary frame 15 to move downward; the piston rod 30 vertically fixed at the bottom center of the auxiliary frame 15 moves down with the auxiliary frame 15, and its piston end slides inside the liquid collecting cylinder 31 and compresses the space inside the cylinder, so that the pressure inside the liquid collecting cylinder 31 increases, thereby allowing the polishing agent in the liquid collecting cylinder 31 that is adapted to the current mesh size of the polishing block 12 to flow into the first stretching pipe 33 through the one-way drain valve pipe 32; the first stretching pipe 33 has a telescopic characteristic and can flexibly adjust its length with the movement of the auxiliary frame 15 to avoid the pipe being pulled and broken, and finally the polishing agent is sprayed out through the nozzle pipe 34 connected to the first stretching pipe 33, accurately sprayed on the surface of the currently working polishing block 12, realizing the synchronous effect of liquid supply at the start of polishing, and the overall polishing effect is better.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A floating polishing head for stone carving polishing process, comprising a polishing seat (1), a fixing seat (2) fixed to one side of the polishing seat (1), and a hollow shaft (3) vertically penetrating and rotatably mounted on one side of the polishing seat (1) via a bearing, characterized in that: The bottom end of the hollow shaft (3) is provided with a turntable (5). Several connecting brackets (4) are fixedly installed around the top edge of the turntable (5) at equal angles. The ends of the connecting brackets (4) away from the turntable (5) are fixedly installed on the outside of one side of the hollow shaft (3). Several sets of polishing components with different mesh sizes are arranged around the bottom end of the turntable (5). A switching component is provided inside the bottom end of the hollow shaft (3). A drive motor (7) is provided on one side of the top of the polishing seat (1). A circular hole (38) is opened through the middle of the turntable (5). Each polishing assembly includes two symmetrically arranged limiting seats (10), both of which are attached to the bottom surface of the turntable (5). Each limiting seat (10) has a limiting groove (11) inside its bottom end. A polishing block (12) is installed inside the limiting groove (11). A compression assembly and a liquid spraying assembly are provided on the turntable (5) near the top of each limiting seat (10). The switching assembly includes a cylinder (18) and a rotating frame (21). The cylinder (18) is vertically arranged inside the hollow shaft (3). The rotating frame (21) is horizontally arranged at the bottom of the output end of the cylinder (18). A support frame (17) is fixedly installed at the top of the cylinder (18). Both ends of the support frame (17) are fixedly installed on the inner wall of the hollow shaft (3). A positioning seat (19) is fixedly installed at the bottom output end of the cylinder (18). The compression assembly includes two limiting rods (14) and an auxiliary frame (15). The two limiting rods (14) are symmetrically fixedly installed on the outside of the top of the limiting seat (10). The tops of the two limiting rods (14) are slidably installed on the outside of the top of the turntable (5). The two ends of the auxiliary frame (15) are fixedly installed on the top of the limiting rods (14) on the corresponding sides. Each limiting rod (14) is fitted with a compression spring (16). The two ends of the compression spring (16) are fixedly installed on the top of the turntable (5) and the bottom of the auxiliary frame (15) respectively. A rotating rod (20) is vertically and rotatably mounted on the bottom center of the positioning seat (19). The bottom end of the rotating rod (20) is fixedly connected to the top center of the rotating frame (21). Both ends of the rotating frame (21) are vertically fixed with abutting posts (22). Limiting rings (23) are fixedly fitted on the outer side of the abutting posts (22) near the top. A worm gear (28) is fixedly inserted through the outer side of the rotating rod (20) near the top. Abutting hole (39) is opened through the inner side of the limiting seat (10) near the abutting post (22), and the abutting hole (39) can be inserted and cooperated with the abutting post (22). Two positioning frames (24) are symmetrically fixed on the side of the positioning seat (19) near the worm wheel (28). A worm (25) is installed between the two positioning frames (24) and rotates through it. The worm (25) is meshed with the worm wheel (28). A ratchet (26) is fixedly installed at one end of the worm (25). A drive rack (27) is vertically fixed on the inner wall of the hollow shaft (3) near the ratchet (26).

2. The floating polishing head for stone carving polishing process according to claim 1, characterized in that: The polishing seat (1) is fixedly mounted with a mounting base (6) on the side near the drive motor (7). The drive motor (7) is fixedly mounted on the top of the mounting base (6). The output end of the drive motor (7) is fixedly mounted with a drive gear (8). The hollow shaft (3) is fixedly mounted with a gear ring (9) through the outside of the drive gear (8). The gear ring (9) meshes with the drive gear (8).

3. A floating polishing head for stone carving polishing process according to claim 1, characterized in that: The limiting seat (10) has a limiting bolt (13) installed inside the side near the opening end of the limiting groove (11) with a through thread. The outer side of the limiting bolt (13) is in contact with one end of the polishing block (12).

4. A floating polishing head for stone carving polishing process according to claim 1, characterized in that: The spraying assembly includes a piston rod (30) and a collection cylinder (31). The piston rod (30) is vertically fixed at the bottom center of the auxiliary frame (15), and the collection cylinder (31) is vertically fixed at the top outside of the turntable (5). The piston end of the piston rod (30) is slidably sealed inside the collection cylinder (31), and two one-way drain valve pipes (32) are symmetrically fixed through the bottom of the collection cylinder (31).

5. A floating polishing head for stone carving polishing process according to claim 4, characterized in that: Each of the one-way drain valve pipes (32) has a first tension pipe (33) fixedly connected to its output end. Both sides of the bottom end of the limiting seat (10) are fixedly installed with nozzle pipes (34). The output end of the first tension pipe (33) is connected and fixedly connected to the input end of the nozzle pipe (34) on the corresponding side.

6. A floating polishing head for stone carving polishing process according to claim 4, characterized in that: One-way inlet valve pipe (35) is fixed through one side of the bottom end of the liquid collection cylinder (31). A second tension pipe (36) is fixed through the input end of the one-way inlet valve pipe (35). One end of the second tension pipe (36) is fixed through the bottom end of the liquid storage tank (37). The liquid storage tank (37) is fixedly installed on the outside of one side of the connecting frame (4). A sealing cap (40) is threadedly connected to the top of the liquid storage tank (37).

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