A polishing machine with automatic loading and unloading functions

Abstract

The present invention discloses a polishing machine with automatic loading and unloading functions, comprising a frame, a clamping mechanism, a polishing shaft, a loading mechanism and a unloading mechanism, wherein the clamping mechanism, the unloading mechanism, the polishing shaft and the loading mechanism are mounted on the frame from bottom to top, a plurality of polishing heads are mounted on the polishing shaft along the circumferential and axial directions, the unloading mechanism comprises an unloading frame, a fixed seat, and a plurality of scraping mechanisms for scraping polishing sheets on the polishing heads, the unloading frame is mounted on the frame, the fixed seat is mounted on the unloading frame, and each scraping mechanism is mounted on the fixed seat and corresponds to the position of the corresponding polishing head. The polishing machine has the advantages of simple structure, time and labor saving, ability to ensure accuracy of loading and taking sheets, and ability to improve production capacity and efficiency.

Description

Technical Field

[0001] The invention mainly relates to the technical field of polishing machines, and in particular to a polishing machine with automatic loading and unloading functions. Background Art

[0002] Modern manufacturing industry has put forward more and more requirements for CNC equipment, requiring the equipment to be able to achieve high speed, high efficiency, high precision and realize the processing of complex parts. Five-axis machining center is more and more widely used in the ranks of modern equipment for processing complex parts. Due to its high precision, flexible programming, processing of various complex curved surfaces, and processing of five surfaces in one clamping, it has greatly improved the level and efficiency of industrial manufacturing.

[0003] In the prior art, the polishing mechanism of the five-axis or multi-axis polishing machine is provided with multiple polishing heads, on which polishing sheets are loaded, and the polishing sheets are generally bonded to the polishing heads. Since the polishing sheets are consumables, they need to be replaced frequently to ensure the polishing efficiency and quality. The existing methods all use manual bonding of the polishing sheets to the polishing heads one by one. On the one hand, it is time-consuming and labor-intensive, which seriously affects the production capacity; on the other hand, the erroneous operation of not taking out or loading the sheets often occurs, which brings great trouble and uncertainty to the subsequent polishing. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a polishing machine with automatic loading and unloading functions which has a simple structure, saves time and effort, can ensure the accuracy of loading and unloading, and can improve production capacity and efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A polishing machine with automatic loading and unloading functions comprises a frame, a clamping mechanism, a polishing shaft, a loading mechanism and a unloading mechanism, wherein the clamping mechanism, the unloading mechanism, the polishing shaft and the loading mechanism are mounted on the frame from bottom to top, a plurality of polishing heads are mounted on the polishing shaft along the circumferential and axial directions, the unloading mechanism comprises a unloading rack, a fixed seat, and a plurality of rows of scraping mechanisms for scraping polishing sheets on the polishing heads, the unloading rack is mounted on the frame, the fixed seat is mounted on the unloading rack, and each scraping mechanism is mounted on the fixed seat and corresponds to the corresponding polishing head position.

[0007] As a further improvement of the above technical solution:

[0008] The scraping mechanism comprises a scraping driving member and a scraping platform. The scraping driving member is installed on a fixed seat, and the scraping platform is connected to the scraping driving member.

[0009] The output end of the scraping drive member is provided with a mounting platform, and the scraping platform is fixedly connected to the mounting platform.

[0010] The fixing seat is provided with a baffle mechanism for preventing the polishing sheet from adhering to the scraping table.

[0011] The baffle mechanism comprises a support seat and a baffle plate, wherein the support seat is fixed on a fixing seat, and the baffle plate is installed on the support seat and extends to the scraping platform.

[0012] The baffle plate is provided with an avoidance groove for avoiding the scraping platform.

[0013] The loading mechanism includes a loading rack, a sliding platform, a sliding drive, a plurality of storage mechanisms for placing polishing sheets, and a pushing mechanism matching the number of storage mechanism columns. The loading rack is installed on the frame, the sliding platform is slidably mounted on the loading rack, each storage mechanism column is installed on the sliding platform, each pushing mechanism column is installed on the loading rack and located above the storage mechanism. The sliding drive is installed on the sliding platform and drives the sliding platform to drive the storage mechanism to correspond to the polishing head below and the pushing mechanism above. The pushing mechanism pushes the polishing sheet in the storage mechanism to the polishing head to form a bond.

[0014] The material storage mechanism comprises a mounting frame and a plurality of material storage barrels for placing polishing sheets, each row of material storage barrels is fixedly mounted on the mounting frame and arranged in multiple rows, and the mounting frame is mounted on a sliding platform.

[0015] The material storage barrel is penetrated from top to bottom, and a material-holding spring piece is arranged on the inner edge of the bottom of the material storage barrel.

[0016] The storage barrel is provided with an opening on a side away from the mounting frame for accommodating the polishing sheet.

[0017] The mounting frame comprises a fixed plate and a plug-in platform, the sliding platform is provided with a plug-in column, each row of storage barrels is fixedly mounted on the fixed plate, and the plug-in platform is fixedly mounted on the fixed plate and plugged with the plug-in column.

[0018] A locking latch is installed on the side of the plug-in platform, and a slot is provided on the plug-in column. The locking latch cooperates with the slot to lock.

[0019] The sliding platform is provided with a feeding sensor for detecting whether the polishing head has a polishing sheet or not. The sliding platform is also provided with a spring latch. When the spring latch is lifted by the polishing sheet of the polishing head, the feeding sensor senses the spring latch.

[0020] The loading rack includes a fixed rack, a flip rack and a flip driving member, the fixed rack is installed on the frame, the flip driving member is hinged to the fixed rack, the flip rack is hinged to the flip driving member, the sliding platform is slidably mounted on the flip rack, and the pushing mechanism is installed on the fixed rack.

[0021] The fixing frame is slidably mounted on the frame, and a lifting motor connected to the fixing frame is mounted on the frame. When the lifting motor drives the fixing frame to reach a low position, the gap between the material storage mechanism and the polishing head is the thickness of a polishing sheet.

[0022] The overturn frame is provided with limit sensors at both ends and an origin sensor between the limit sensors in the travel direction of the sliding platform.

[0023] The pushing mechanism comprises a pushing cylinder and a pushing head. The pushing cylinder is fixedly mounted on the loading rack, and the pushing head is connected to the pushing cylinder.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] The polishing machine with automatic loading and unloading function of the present invention comprises a frame, a clamping mechanism, a polishing shaft, a loading mechanism and a unloading mechanism, wherein the clamping mechanism, the unloading mechanism, the polishing shaft and the loading mechanism are mounted on the frame from bottom to top, a plurality of polishing heads are mounted on the polishing shaft along the circumferential direction and the axial direction, the unloading mechanism comprises an unloading frame, a fixed seat, and a plurality of scraping mechanisms for scraping the polishing sheet on the polishing head, the unloading frame is mounted on the frame, the fixed seat is mounted on the unloading frame, and each scraping mechanism is mounted on the fixed seat and corresponds to the position of the corresponding polishing head. When in use, the polishing sheet is first placed in the loading mechanism, when the polishing sheet on the polishing head needs to be replaced, the polishing machine is stopped, the scraping mechanism corresponds to the position of the corresponding polishing head, and then the polishing shaft drives the polishing head to rotate, the polishing sheet on the polishing head is scraped off by the scraping mechanism and peeled off from the polishing head, realizing automatic unloading, and then the loading mechanism is started, the polishing sheet is sent to the polishing head for bonding, and the automatic loading of the polishing sheet is completed, the parts are clamped on the clamping mechanism, and the polishing head on the polishing shaft performs polishing on the parts. Compared with the traditional structure, this polishing machine realizes automatic loading and unloading of polishing wafers through the loading mechanism and the unloading mechanism. It has a simple structure, saves time and effort, and improves production capacity and efficiency. In addition, it avoids the erroneous operation of not loading and not unloading wafers during manual operation, and ensures the accuracy of loading and unloading wafers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a main structural schematic diagram of the present invention.

[0027] Figure 2 It is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 3 It is a main structural schematic diagram of the feeding mechanism in the present invention.

[0029] Figure 4 It is a schematic diagram of the top view of the feeding mechanism in the present invention.

[0030] Figure 5It is a three-dimensional structural schematic diagram of the feeding mechanism in the present invention.

[0031] Figure 6 yes Figure 5 A is an enlarged structural diagram of FIG.

[0032] Figure 7 It is a three-dimensional structural schematic diagram of the feeding mechanism in the present invention (from another viewing angle).

[0033] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure at B.

[0034] Fig. 9 It is a structural schematic diagram of the storage barrel in the present invention.

[0035] Fig.10 It is a main structural schematic diagram of the feeding mechanism in the present invention.

[0036] Fig.11 It is a three-dimensional structural schematic diagram of the feeding mechanism in the present invention.

[0037] Fig.12 yes Fig.11 Enlarged structural diagram at C.

[0038] The symbols in the figure represent:

[0039] 1. Frame; 2. Clamping mechanism; 3. Polishing shaft; 4. Feeding mechanism; 41. Feeding rack; 411. Fixed rack; 412. Turning rack; 413. Turning drive; 42. Sliding platform; 421. Plug-in column; 4211. Slot; 43. Sliding drive; 44. Storage mechanism; 441. Mounting rack; 4411. Fixed plate; 4412. Plug-in platform; 4413. Locking pin; 442. Storage barrel; 4421. Material clamping shrapnel; 4422. Opening ;45. Pushing mechanism;451. Pushing cylinder;452. Pushing head;46. Loading sensor;47. Spring latch;48. Limit sensor;49. Origin sensor;5. Unloading mechanism;51. Unloading rack;52. Fixed seat;53. Scraping mechanism;531. Scraping drive;5311. Mounting table;532. Scraping table;54. Baffle mechanism;541. Support seat;542. Baffle;5421. Avoidance groove;6. Polishing head;7. Lifting motor. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Figures 1 to 12An embodiment of the polishing machine with automatic loading and unloading functions of the present invention is shown, including a frame 1, a clamping mechanism 2, a polishing shaft 3, a loading mechanism 4 and a unloading mechanism 5. The clamping mechanism 2, the unloading mechanism 5, the polishing shaft 3 and the loading mechanism 4 are installed on the frame 1 from bottom to top. A plurality of polishing heads 6 are installed on the polishing shaft 3 along the circumferential and axial directions. The unloading mechanism 5 includes a unloading rack 51, a fixed seat 52, and a plurality of rows of scraping mechanisms 53 for scraping the polishing sheets on the polishing heads 6. The unloading rack 51 is installed on the frame 1, the fixed seat 52 is installed on the unloading rack 51, and each scraping mechanism 53 is installed on the fixed seat 52 and corresponds to the position of the corresponding polishing head 6. When in use, the polishing sheet is first placed in the loading mechanism 4. When the polishing sheet on the polishing head 6 needs to be replaced, the polishing machine is stopped, the scraping mechanism 53 corresponds to the position of the corresponding polishing head 6, and then the polishing shaft 3 drives the polishing head 6 to rotate, and the polishing sheet on the polishing head 6 is scraped off by the scraping mechanism 53 and separated from the polishing head 6, so as to realize automatic unloading, and then the loading mechanism 4 is started to send the polishing sheet to be bonded to the polishing head 6, so as to complete the automatic loading of the polishing sheet, clamp the part on the clamping mechanism 2, and the polishing head 6 on the polishing shaft 3 polishes the part. Compared with the traditional structure, the polishing machine realizes the automatic loading and unloading of the polishing sheet through the loading mechanism 4 and the unloading mechanism 5, and its structure is simple, time-saving and labor-saving, and the production capacity and efficiency are improved; in addition, it avoids the erroneous operation of not loading and unloading the sheet during manual operation, and ensures the accuracy of loading and unloading the sheet.

[0042] In this embodiment, the scraping mechanism 53 includes a scraping driving member 531 and a scraping platform 532. The scraping driving member 531 is mounted on the fixed seat 52, and the scraping platform 532 is connected to the scraping driving member 531. In this structure, the scraping driving member 531 drives the scraping platform 532 to extend to the corresponding position of the polishing head 6, and then rotates the polishing head 6. The polishing sheet on the polishing head 6 is scraped off by the scraping platform 532 and peeled off from the polishing head 6. The structure is simple and reliable.

[0043] In this embodiment, the scraping driving member 531 is configured as a cylinder.

[0044] In this embodiment, a mounting platform 5311 is provided at the output end of the scraping driving member 531, and the scraping platform 532 is fixedly connected to the mounting platform 5311. The mounting platform 5311 provides a mounting base for the scraping platform 532, ensuring the stability and reliability of the scraping platform 532.

[0045] In this embodiment, a baffle mechanism 54 is installed on the fixed seat 52 to prevent the polishing sheet from adhering to the scraping platform 532. The mounting platform 5311 provides a mounting base for the scraping platform 532 to ensure the stability and reliability of the scraping platform 532.

[0046] In this embodiment, the baffle mechanism 54 includes a support seat 541 and a baffle 542. The support seat 541 is fixed on the fixed seat 52. The baffle 542 is installed on the support seat 541 and extends to the scraping platform 532. The support seat 541 provides a mounting base for the baffle 542, and the baffle 542 prevents the polishing sheet from being adhered to the scraping platform 532.

[0047] In this embodiment, the baffle plate 542 is provided with an escape groove 5421 for escaping the scraping platform 532. The arrangement of the escape groove 5421 can ensure the telescopic action of the scraping platform 532, and the structure is simple and reliable.

[0048] In this embodiment, the loading mechanism 4 includes a loading rack 41, a sliding platform 42, a sliding drive 43, a plurality of rows of storage mechanisms 44 for placing polishing sheets, and a pushing mechanism 45 matching the number of rows of the storage mechanisms 44. The loading rack 41 is installed on the frame 1, the sliding platform 42 is slidably mounted on the loading rack 41, each row of storage mechanisms 44 is installed on the sliding platform 42, each row of pushing mechanisms 45 is installed on the loading rack 41 and is located above the storage mechanism 44, the sliding drive 43 is installed on the sliding platform 42 and drives the sliding platform 42 to drive the storage mechanism 44 to correspond to the position of the polishing head 6 below and the pushing mechanism 45 above, and the pushing mechanism 45 pushes the polishing sheet in the storage mechanism 44 to the polishing head 6 to form a bond. Start the sliding drive 43, drive the sliding platform 42 to drive the storage mechanism 44 to correspond to the position of the polishing head 6 below and the pushing mechanism 45 above, and then start the pushing mechanism 45 to push the polishing sheet in the storage mechanism 44 to the polishing head 6 to form a bond, complete the automatic loading of the polishing sheet, clamp the part on the clamping mechanism 2, and the polishing head 6 on the polishing shaft 3 polishes the part. Compared with the traditional structure, the polishing machine realizes the automatic loading of the polishing sheet through the loading mechanism 4, which has a simple structure, saves time and labor, and improves production capacity and efficiency; in addition, it avoids the erroneous operation of not loading the sheet during manual operation, and ensures the accuracy of loading.

[0049] In this embodiment, the sliding driving member 43 is a servo motor.

[0050] In this embodiment, the material storage mechanism 44 includes a mounting frame 441 and a plurality of material storage barrels 442 for placing polishing sheets, each row of material storage barrels 442 is fixedly mounted on the mounting frame 441 and arranged in multiple rows, and the mounting frame 441 is mounted on the sliding platform 42. In this structure, the material storage barrels 442 are arranged in a matrix, which has the advantages of large storage capacity and convenient arrangement switching.

[0051] In this embodiment, the material storage barrel 442 is penetrated from top to bottom, and a material clamping spring piece 4421 is provided at the inner edge of the bottom of the material storage barrel 442. The material clamping spring piece 4421 plays a role in positioning the polishing sheet when storing the polishing sheet to prevent the polishing sheet from falling freely. When loading the sheet, the material pushing mechanism 45 can squeeze the material clamping spring piece 4421 to release the constraint and ensure the smoothness of the sheet loading. The structure is simple and ingenious.

[0052] In this embodiment, the storage barrel 442 is provided with an opening 4422 for placing the polishing sheet on a side away from the mounting frame 441. The opening 4422 provides a through operating space when the polishing sheet is placed in the storage barrel 442 for storage, which is convenient for placing the polishing sheet and improves convenience.

[0053] In this embodiment, the mounting frame 441 includes a fixed plate 4411 and a plug-in platform 4412. A plug-in column 421 is provided on the sliding platform 42. The storage barrels 442 of each column are fixedly mounted on the fixed plate 4411. The plug-in platform 4412 is fixedly mounted on the fixed plate 4411 and plugged with the plug-in column 421. In this structure, the fixed plate 4411 is used to fix the storage barrels 442 of the same column. Through the plug-in cooperation between the plug-in platform 4412 and the plug-in column 421, the storage barrels 442 can be quickly installed and replaced, which further improves efficiency.

[0054] In this embodiment, a locking pin 4413 is installed on the side of the plug-in platform 4412, and a slot 4211 is provided on the plug-in column 421. The locking pin 4413 cooperates with the slot 4211 to lock. The locking pin 4413 cooperates with the slot 4211 to lock the plug-in platform 4412 and the plug-in column 421, ensuring stability and reliability during the loading process.

[0055] In this embodiment, the sliding platform 42 is provided with a feeding sensor 46 for detecting whether the polishing head 6 has a polishing sheet or not. The sliding platform 42 is also provided with a spring latch 47. When the spring latch 47 is lifted up by the polishing sheet of the polishing head 6, the feeding sensor 46 senses the spring latch 47. When replacing the polishing sheet, if the feeding sensor 46 senses the spring latch 47, it means that the spring latch 47 is lifted up by the polishing sheet of the polishing head 6, that is, the polishing sheet of the polishing head 6 has not been removed. At this time, the pushing mechanism 45 will not move. Only when the feeding sensor 46 does not sense the spring latch 47, that is, the polishing sheet of the polishing head 6 has been removed, the pushing mechanism 45 will move to load the sheet, further avoiding the erroneous operation of not loading the sheet during manual loading, and ensuring the accuracy of loading the sheet.

[0056] In this embodiment, the loading rack 41 includes a fixed rack 411, a flip rack 412 and a flip driving member 413. The fixed rack 411 is mounted on the frame 1, the flip driving member 413 is hinged to the fixed rack 411, the flip rack 412 is hinged to the flip driving member 413, the sliding platform 42 is slidably mounted on the flip rack 412, and the pushing mechanism 45 is mounted on the fixed rack 411. In this structure, the flip driving member 413 can realize the swing of the flip rack 412. When installing the storage barrel 442, the flip rack 412 can be swung downward, which, on the one hand, lowers the installation operation position and facilitates installation, and on the other hand, expands the operating space between the flip rack 412 and the fixed rack 411, solving the problem of installing the storage barrel 442 in the narrow space of the polishing machine.

[0057] In this embodiment, the turning driving member 413 is a cylinder.

[0058] In this embodiment, the fixing frame 411 is slidably mounted on the frame 1, and the frame 1 is mounted with a lifting motor 7 connected to the fixing frame 411. When the lifting motor 7 drives the fixing frame 411 to reach a low position, the gap between the material storage mechanism 44 and the polishing head 6 is the thickness of a polishing sheet. The lifting motor 7 can realize that the gap between the material storage barrel 442 and the polishing head 6 is the thickness of a polishing sheet, ensuring that the pushing mechanism 45 can only push down one polishing sheet each time, and the structure is simple and ingenious.

[0059] In this embodiment, the flip frame 412 is provided with limit sensors 48 at both ends and an origin sensor 49 between the limit sensors 48 in the travel direction of the sliding platform 42. The limit sensors 48 and the origin sensor 49 ensure the accuracy of the travel and movement of the sliding platform 42.

[0060] In this embodiment, the pushing mechanism 45 includes a pushing cylinder 451 and a pushing head 452. The pushing cylinder 451 is fixed on the loading frame 41, and the pushing head 452 is connected to the pushing cylinder 451. In this structure, the pushing cylinder 451 drives the pushing head 452 to push the polishing sheet in the storage barrel 442 onto the polishing head 6 to form a bond, and its structure is simple and reliable.

[0061] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A polishing machine with automatic loading and unloading function, characterized in that: The invention comprises a frame (1), a clamping mechanism (2), a polishing shaft (3), a loading mechanism (4) and a unloading mechanism (5), wherein the clamping mechanism (2), the unloading mechanism (5), the polishing shaft (3) and the loading mechanism (4) are mounted on the frame (1) from bottom to top, a plurality of polishing heads (6) are mounted on the polishing shaft (3) in the circumferential direction and the axial direction, the unloading mechanism (5) comprises an unloading frame (51), a fixing seat (52), and a plurality of rows of scraping mechanisms (53) for scraping polishing sheets on the polishing heads (6), the unloading frame (51) is mounted on the frame (1), and the fixing seat (52) is mounted on the unloading frame (51). Each scraping mechanism (53) is mounted on a fixed seat (52) and corresponds to the position of a corresponding polishing head (6); the scraping mechanism (53) comprises a scraping driving member (531) and a scraping platform (532); the scraping driving member (531) is mounted on the fixed seat (52); the scraping platform (532) is connected to the scraping driving member (531); a baffle mechanism (54) for preventing the polishing sheet from adhering to the scraping platform (532) is mounted on the fixed seat (52); the baffle mechanism (54) comprises a supporting seat (541) and a baffle plate (542); the supporting seat (541) is fixed on the fixed seat (52); the baffle plate (542) 542) is mounted on a support seat (541) and extends to a scraping platform (532); the feeding mechanism (4) comprises a feeding frame (41), a sliding platform (42), a sliding driving member (43), a plurality of rows of storage mechanisms (44) for placing polishing sheets, and a pushing mechanism (45) whose number matches the number of rows of the storage mechanisms (44); the feeding frame (41) is mounted on a frame (1); the sliding platform (42) is slidably mounted on the feeding frame (41); each row of storage mechanisms (44) is mounted on the sliding platform (42); each row of pushing mechanisms (45) is mounted on the feeding frame (41) and is located above the storage mechanisms (44); the sliding The driving member (43) is installed on the sliding platform (42) and drives the sliding platform (42) to drive the storage mechanism (44) to correspond to the position of the polishing head (6) below and the pushing mechanism (45) above. The pushing mechanism (45) pushes the polishing sheet in the storage mechanism (44) to the polishing head (6) to form a bond. The sliding platform (42) is provided with a loading sensor (46) for detecting whether the polishing head (6) has a polishing sheet. The sliding platform (42) is also provided with a spring latch (47). When the spring latch (47) is lifted by the polishing sheet of the polishing head (6), the loading sensor (46) senses the spring latch (47).The loading rack (41) comprises a fixed rack (411), a flip rack (412) and a flip driving member (413); the fixed rack (411) is mounted on the frame (1); the flip driving member (413) is hinged to the fixed rack (411); the flip rack (412) is hinged to the flip driving member (413); the sliding platform (42) is slidably mounted on the flip rack (412); the pushing mechanism (45) is mounted on the fixed rack (411); the fixed rack (411) is slidably mounted on the frame (1); a lifting motor (7) connected to the fixed rack (411) is mounted on the frame (1); when the lifting motor (7) drives the fixed rack (411) to reach a low position, the gap between the storage mechanism (44) and the polishing head (6) is the thickness of a polishing sheet.

2. The polishing machine with automatic loading and unloading function according to claim 1 is characterized in that: The output end of the scraping driving member (531) is provided with a mounting platform (5311), and the scraping platform (532) is fixedly connected to the mounting platform (5311).

3. The polishing machine with automatic loading and unloading function according to claim 1 is characterized in that: The baffle plate (542) is provided with an avoidance groove (5421) for avoiding the scraping platform (532).

4. The polishing machine with automatic loading and unloading function according to claim 1 is characterized in that: The material storage mechanism (44) comprises a mounting frame (441) and a plurality of material storage barrels (442) for placing polishing sheets. The material storage barrels (442) in each row are fixedly mounted on the mounting frame (441) and arranged in multiple rows. The mounting frame (441) is mounted on the sliding platform (42).

5. The polishing machine with automatic loading and unloading function according to claim 4 is characterized in that: The material storage barrel (442) penetrates from top to bottom, and a material-locking spring piece (4421) is provided on the inner edge of the bottom of the material storage barrel (442).

6. The polishing machine with automatic loading and unloading function according to claim 5 is characterized in that: The storage barrel (442) is provided with an opening (4422) on a side away from the mounting frame (441) for accommodating the polishing sheet.

7. The polishing machine with automatic loading and unloading function according to claim 6 is characterized in that: The mounting frame (441) comprises a fixed plate (4411) and a plug-in platform (4412); a plug-in column (421) is provided on the sliding platform (42); each row of storage barrels (442) is fixed on the fixed plate (4411); the plug-in platform (4412) is fixed on the fixed plate (4411) and plugged with the plug-in column (421).

8. The polishing machine with automatic loading and unloading function according to claim 7 is characterized in that: A locking pin (4413) is installed on the side of the plug-in platform (4412), and a slot (4211) is provided on the plug-in column (421), and the locking pin (4413) cooperates with the slot (4211) to lock.

9. The polishing machine with automatic loading and unloading function according to claim 1 is characterized in that: The overturning frame (412) is provided with limit sensors (48) located at both ends and an origin sensor (49) located between the limit sensors (48) in the travel direction of the sliding platform (42).

10. The polishing machine with automatic loading and unloading function according to any one of claims 4 to 8, characterized in that: The pushing mechanism (45) comprises a pushing cylinder (451) and a pushing head (452); the pushing cylinder (451) is fixedly mounted on the loading rack (41); and the pushing head (452) is connected to the pushing cylinder (451).

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